WO2013157078A1 - Handrail for bathtub - Google Patents

Handrail for bathtub Download PDF

Info

Publication number
WO2013157078A1
WO2013157078A1 PCT/JP2012/060343 JP2012060343W WO2013157078A1 WO 2013157078 A1 WO2013157078 A1 WO 2013157078A1 JP 2012060343 W JP2012060343 W JP 2012060343W WO 2013157078 A1 WO2013157078 A1 WO 2013157078A1
Authority
WO
WIPO (PCT)
Prior art keywords
torque transmission
nut
knob
torque
handrail
Prior art date
Application number
PCT/JP2012/060343
Other languages
French (fr)
Japanese (ja)
Inventor
誠 中谷
剛 李
川村　満夫
貴 新関
Original Assignee
アロン化成株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by アロン化成株式会社 filed Critical アロン化成株式会社
Priority to JP2014501363A priority Critical patent/JP5548835B2/en
Priority to PCT/JP2012/060343 priority patent/WO2013157078A1/en
Publication of WO2013157078A1 publication Critical patent/WO2013157078A1/en

Links

Images

Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47K—SANITARY EQUIPMENT NOT OTHERWISE PROVIDED FOR; TOILET ACCESSORIES
    • A47K3/00—Baths; Douches; Appurtenances therefor
    • A47K3/001—Accessories for baths, not provided for in other subgroups of group A47K3/00 ; Insertions, e.g. for babies; Tubs suspended or inserted in baths; Security or alarm devices; Protecting linings or coverings; Devices for cleaning or disinfecting baths; Bath insulation
    • A47K3/003—Grips for baths

Definitions

  • the present invention relates to a structure of a torque transmission handle that is a handrail for a bathtub that is detachably attached to a side wall of the bathtub, and that supports a pressing plate and screw a bolt shaft screwed with a nut.
  • the present invention transmits torque from the knob to the nut when the position of the handle relative to the handrail body for the bathtub does not change even when the bolt shaft is screwed back and forth, and the torque transmitted from the handle is less than a predetermined value.
  • the present invention relates to a torque transmission handle provided with a torque transmission mechanism that interrupts transmission of torque when the transmitted torque exceeds a predetermined value.
  • a handrail for a bathtub that can be detachably attached to the side wall of the bathtub has been provided so that an elderly person can easily support the body when entering and leaving the bathtub. Since the handrail for bathtubs may leave the total weight of the user by the user, it must be firmly attached to the side wall of the bathtub. For this reason, generally, a handrail for a bathtub can rotate a handle or a knob so that a bolt shaft screwed with a nut is screwed back and forth, and a pressing plate supported by the bolt shaft can be strongly pressed against a side wall of the bathtub. A pressing mechanism is provided.
  • the above-mentioned type of handrail for a bathtub is one in which the user manually attaches the handrail for the bathtub to the side wall of the bathtub by turning the handle or the knob and screwing the pressing plate back and forth. Therefore, the side wall of the bathtub is broken if the tightening force (or pressing force) of the pressing plate is too strong, and conversely, if the tightening force of the pressing plate is insufficient, the handrail for the bathtub is detached from the side wall of the bathtub. There was a problem. In order to solve the above problem, for example, as described in Japanese Patent Application Laid-Open No.
  • Patent Document 1 a rotation transmission blocking mechanism (constant torque transmission mechanism) is applied to a handle or knob for screwing the pressing plate back and forth. ) And a handrail for bathtubs has been developed that prevents a pressing force exceeding a certain level from being transmitted to the side wall of the bathtub.
  • the handrail for bathtubs described in Patent Literature 1 supports the pressing plate by fixing the nut to the handrail for the bathtub so as not to rotate, and directly rotating the bolt shaft screwed with the nut by the knob.
  • the bolt shaft is screwed back and forth.
  • a rotation transmission blocking mechanism is attached between the knob and the bolt shaft so that turning force beyond a certain level is not transmitted from the knob to the bolt shaft.
  • the rotation transmission blocking mechanism is limited particularly in the mounting structure and the installation space. Instead, it can be simply disposed between the rear end of the bolt shaft and the knob.
  • the area of the nut end surface is narrow and the shape of the outer peripheral surface of the nut is a curved surface. This is because the rotation transmission blocking mechanism cannot be disposed between the two. Further, since the outer region of the nut is also surrounded by the knob, there is a problem that the space for attaching the rotation transmission blocking mechanism is extremely limited.
  • the present invention provides a bathtub hand of a type in which a bolt shaft that supports a pressing plate is screwed back and forth by rotating a nut by a knob in order to safely and reliably attach and remove the handrail for the bathtub to the side wall of the bathtub.
  • a bolt shaft that supports a pressing plate is screwed back and forth by rotating a nut by a knob in order to safely and reliably attach and remove the handrail for the bathtub to the side wall of the bathtub.
  • the present inventors in a handrail for a bathtub of the type in which the bolt shaft on which the pressing plate is supported is screwed back and forth by rotating the nut with the knob,
  • the inside of the knob is provided with a chamber (cavity) to accommodate the bolt shaft protruding from the main body frame, and from the knob to the nut
  • a torque transmission mechanism is provided that transmits torque when the transmitted torque is less than a predetermined value, and interrupts torque transmission when the transmitted torque reaches a predetermined value.
  • the torque transmission handle includes a bolt shaft that supports the pressing plate, a bolt shaft, A nut that is screwed and rotatably attached to a vertical portion of the main body frame, and a knob that is rotatably mounted on the nut.
  • the knob provided with a chamber for accommodating a bolt shaft projecting outward from the vertical portion on the opposite side of the vertical portion of the main body frame, A torque transmission mechanism that transmits torque from the knob to the nut when the transmitted torque is less than a predetermined value, and that interrupts transmission of torque from the knob to the nut when the transmitted torque is equal to or greater than the predetermined value; A handrail for a bathtub is provided.
  • the torque transmission mechanism of the present invention is such that the bolt shaft that supports the pressing plate is screwed back and forth by rotating the nut with the knob, so that the nut is rotatably attached to the vertical portion of the main body frame. For this reason, even if the nut is rotated, it does not move in the axial direction from the vertical portion of the main body frame, and only the bolt shaft is screwed back and forth.
  • the knob for rotating the nut is rotatably mounted on the nut, and is preferably attached to the vertical portion of the main body frame so as to be rotatable in the same manner as the nut.
  • a torque transmission mechanism described later is disposed between the knob and the nut.
  • the knob is arranged so as to cover the rear end portion of the bolt shaft via the nut, it is described in Patent Document 1 arranged in series at the rear end of the bolt shaft.
  • the length of the portion where the knob protrudes outward from the main body frame is shorter and more compact than the torque transmission handle of the other type.
  • the bolt shaft that causes the pressing plate to be screwed back and forth is prevented and the length that the knob that rotates the nut protrudes outward from the main body frame is suppressed, the user It is possible to provide a safe handrail for a bathtub from which obstacles that are bothersome and dangerous are eliminated.
  • the handrail for bathtubs transmits torque from the knob to the nut and transmits the torque when the torque to be transmitted is less than a predetermined value in the course of the torque transmission from the knob to the nut. Above a predetermined value, a torque transmission mechanism is provided that interrupts transmission of torque from the knob to the nut.
  • the pressing plate even when the pressing plate is screwed back and forth by rotating the knob and pressed against the side wall of the bathtub, the torque transmitted from the knob to the nut reaches a predetermined value or more.
  • the pressing force (or tightening force) of the pressing plate against the side wall of the bathtub reaches a predetermined value or more, the transmission of torque from the knob to the nut is interrupted.
  • the pressing plate can securely grip the side wall of the bathtub with a predetermined pressing force, and it is also possible to prevent the side wall of the bathtub from being destroyed due to the pressing force of the pressing plate being too strong.
  • a torque transmission mechanism that is suitable for application to a nut having a substantially cylindrical shape and can reliably transmit or block torque from the knob to the nut.
  • the torque transmission mechanism of the first aspect includes a substantially circular torque transmission surface orthogonal to the rotation axis of the knob, and is slidably mounted along the rotation axis of the knob in synchronization with the rotation of the knob.
  • the torque transmitting surface and the torque transmitting surface are engaged with each other when the torque transmitted to each is less than a predetermined value, and the torque transmitting surface and the torque transmitting surface are mutually locked.
  • the transmitted torque is equal to or greater than a predetermined value, it includes a concave portion or a convex portion having an inclined surface that causes slippage between the torque transmission surface and the torque transmission surface.
  • the center of the torque transmission surface and the center of the torque transmission surface are arranged on the common knob and nut rotation shaft. Further, on the torque transmission surface and the torque transmission surface, a concave / convex portion including a torque transmission surface or a slope inclined from the torque transmission surface is formed. The inclined surface of the torque transmitting surface and the inclined surface of the torque transmitting surface are sloped so that the opposing inclined surface facing each other rises when the knob is turned so that the pressing plate moves forward toward the side wall of the bathtub. ing.
  • the annular member having the torque transmission surface is slidably mounted along the rotation axis of the knob between the inner peripheral surface of the knob and the outer peripheral surface of the nut, and is directed toward the torque transmission surface by an elastic body. It is energized.
  • the elastic body is not particularly limited as long as it is elastically deformable, such as a coil spring, a disc spring, or an elastic resin material, and a known one can be used.
  • a vertical surface that is substantially orthogonal to the torque transmission surface is formed at the rear end of the inclined surface of the torque transmission surface, and a vertical surface that is substantially orthogonal to the torque transmission surface at the rear end of the inclined surface of the torque transmission surface. Is formed.
  • the vertical surface of the torque transmission surface and the vertical surface of the torque transmission surface are brought into contact with each other when the knob is turned so that the pressing plate moves backward from the side wall of the bathtub. Therefore, when turning the knob so that the pressing plate moves backward from the side wall of the bathtub, the knob and the nut always rotate in synchronism regardless of the magnitude of the transmitted torque.
  • the torque transmission mechanism uses the end face of the nut orthogonal to the rotation axis of the nut as the torque transmission face. For example, when the area of the end face of the nut is small Even so, the torque from the knob to the nut can be reliably transmitted or cut off. This is because, in the torque transmission mechanism of the first aspect, the torque transmission surface provided on the nut is formed as a step (outer diameter difference) provided on the outer peripheral surface of the nut, so that it is much more than the end face of the original nut. This is because the second end portion (torque transmission surface) having a large area can be provided on the outer peripheral surface of the nut.
  • the thickness (external dimension) of the end of the nut is increased to increase the area of the end surface of the nut, and the torque transmission surface is provided not on the outer peripheral surface of the nut but on the side end surface of the nut, which is the original end surface of the nut.
  • torque from the knob to the nut can be transmitted or cut off.
  • the torque transmission surface may be formed on a second annular member that can be detachably attached to the nut.
  • the concave portion or the convex portion of the torque transmission surface may be worn when used for a long period of time. Therefore, if the torque transmission surface is formed on the second annular member separate from the nut body, the torque transmission surface The second annular member can be easily replaced when the transmission surface is worn, which is convenient.
  • the nut can be easily attached to the vertical portion of the body frame.
  • the nut is constituted by a trunk portion that is inserted into a through hole provided in a vertical portion of the main body frame, and a flange that is larger than the through hole and extends in a radial direction from the trunk portion. Then, the nut is inserted into the through hole, and the second annular member having an outer diameter larger than that of the through hole is fixed to the nut from the side opposite to the side where the flange contacts the vertical part of the main body frame. Can be easily and rotatably attached to the vertical portion of the main body frame.
  • the torque transmission mechanism includes an annular member in which the torque transmission surface is formed and a nut in which the torque transmission surface is formed in the axial direction, and the position of the elastic body is also changed.
  • the torque transmission surface of the member can also be configured as a torque transmission mechanism of the second mode that is slightly changed so as to bias the torque transmission surface of the nut in the direction opposite to the torque transmission surface of the first mode. .
  • the torque transmission surface of the annular member synchronized with the knob does not change the bias of the torque transmission surface of the nut. It functions by the same mechanism as the mechanism, and has the same effect.
  • the torque transmission mechanism of the third aspect is the same as the torque transmission mechanism of the first aspect except that the torque transmission surface of the annular member urges the torque transmission surface of the nut by the elastic body.
  • the torque transmission surface formed on the annular member that synchronizes with the nut is changed so that the torque transmission surface of the knob is urged by the elastic body.
  • the torque transmission mechanism includes a knob having a substantially circular torque transmission surface orthogonal to the rotation axis of the knob, and a contact with the torque transmission surface and orthogonal to the rotation axis of the nut.
  • An annular member which is provided with a substantially circular torque transmission surface and which is externally slidable along the rotation axis of the nut and is slidable along the rotation axis of the nut;
  • the torque transmission surface and the torque transmission surface are mutually related when the torque transmitted to each of them is less than a predetermined value. It includes a concave portion or a convex portion having an inclined surface that causes slippage between the torque transmission surface and the torque transmission surface when the torque to be stopped and the transmitted torque is equal to or greater than a predetermined value. It is.
  • the center of the torque transmission surface and the center of the torque transmission surface are arranged on a common knob and nut rotation shaft. Further, on the torque transmission surface and the torque transmission surface, a concave / convex portion including a torque transmission surface or a slope inclined from the torque transmission surface is formed. The inclined surface of the torque transmitting surface and the inclined surface of the torque transmitting surface are sloped so that the opposing inclined surface facing each other rises when the knob is turned so that the pressing plate moves forward toward the side wall of the bathtub. ing.
  • the annular member having the torque transmission surface is slidably mounted along the rotation axis of the nut between the inner peripheral surface of the knob and the outer peripheral surface of the nut, and is biased toward the torque transmission surface by the elastic body.
  • the elastic body is not particularly limited as long as it is elastically deformable, such as a coil spring, a disc spring, or an elastic resin material, and a known one can be used.
  • a vertical surface that is substantially orthogonal to the torque transmission surface is formed at the rear end of the inclined surface of the torque transmission surface, and a vertical surface that is substantially orthogonal to the torque transmission surface at the rear end of the inclined surface of the torque transmission surface. Is formed.
  • the vertical surface of the torque transmission surface and the vertical surface of the torque transmission surface are brought into contact with each other when the knob is turned so that the pressing plate moves backward from the side wall of the bathtub. Therefore, when turning the knob so that the pressing plate moves backward from the side wall of the bathtub, the knob and the nut always rotate in synchronism regardless of the magnitude of the transmitted torque.
  • the torque transmission mechanism of the third aspect uses the end face of the nut orthogonal to the rotation axis of the nut as the torque transmission face. For example, when the area of the end face of the nut is small Even so, torque can be reliably transmitted or cut off from the knob to the nut. This is because, in the torque transmission mechanism of the third aspect, the torque transmission surface provided on the nut is formed as an annular member that is slidably disposed on the outer peripheral surface of the nut, so that the end surface of the original nut is further increased. This is because the second end portion (torque transmission surface) having a large area can be provided on the outer peripheral surface of the nut.
  • the torque transmission surface may be formed on a third annular member that can be detachably attached to the knob.
  • the concave portion or the convex portion of the torque transmission surface may be worn when used for a long period of time. Therefore, if the torque transmission surface is formed on the third annular member separate from the knob body, the torque transmission surface It is convenient that the third annular member can be easily replaced when the wears out.
  • the torque transmission mechanism can be made compact by providing a stopper on the nut for fixing the end of the elastic body opposite to the side that biases the annular member. Can be. Further, by detachably attaching the stopper to the nut, the adjustment and replacement of the elastic force of the elastic body can be facilitated, and the maintainability of the torque control mechanisms of the first and third aspects is improved.
  • torque transmission mechanism according to a fourth aspect provided by the present invention will be described.
  • the torque transmission mechanism of the fourth aspect is greatly different from the torque transmission mechanisms of the first to third aspects in which the torque transmission surface and the torque transmission surface are arranged so as to be orthogonal to the rotation axes of the knob and the nut.
  • the torque transmission surface is provided on the inner peripheral surface of the knob (hereinafter referred to as “torque transmission inner peripheral surface”), and the torque transmission surface is provided on the outer peripheral surface of the nut ( Hereinafter referred to as “torque transmission outer peripheral surface”).
  • the annular member of the torque transmission mechanism according to the first to third aspects is located in the key groove formed on the outer peripheral surface of the nut with respect to the rotation shaft of the nut. Replaced as a key that can be moved radially.
  • the torque transmission mechanism includes a knob having a substantially cylindrical torque transmission inner peripheral surface parallel to the rotation axis of the knob, and a sliding contact with the torque transmission inner peripheral surface and rotation of the nut.
  • a substantially cylindrical outer peripheral surface disposed parallel to the shaft, a key groove disposed on the outer peripheral surface and parallel to the rotation shaft of the nut, and a torque that contacts the inner peripheral surface of the torque transmission
  • a key having a transmission outer peripheral surface and arranged in a key groove so as to be movable in a radial direction with respect to the rotation axis of the nut, and the torque transmission outer peripheral surface of the key to the torque transmission inner peripheral surface of the knob
  • the torque transmission inner circumferential surface and the torque transmission outer circumferential surface of the key are arranged so that the torque transmission inner circumferential surface and the torque transmission outer circumferential surface are less than a predetermined value.
  • the torque to be transmitted is above a predetermined value.
  • it is characterized in that it includes recesses or protrusions with
  • the rotation shaft of the torque transmission inner peripheral surface and the rotation shaft of the torque transmission outer peripheral surface are disposed on the common knob and nut rotation shafts. Further, a concave / convex portion including a slope inclined further inward from the cylindrical torque transmission inner peripheral surface is formed on the torque transmission inner peripheral surface of the knob. On the other hand, a key groove disposed in parallel with the nut rotation shaft is formed on the nut torque transmission outer peripheral surface, and the key groove radiates with respect to the nut rotation shaft. There are keys that can be moved in the direction. A concave / convex portion including an inclined surface is formed on the torque transmission outer peripheral surface of the key, and the key is urged toward the torque transmission inner peripheral surface by an elastic body.
  • the elastic body is not particularly limited as long as it is elastically deformable, such as a coil spring, a disc spring, or an elastic resin material, and a known one can be used.
  • a vertical surface substantially orthogonal to the torque transmission inner peripheral surface is formed at the rear end of the inclined surface of the torque transmission inner peripheral surface of the knob.
  • a vertical surface substantially orthogonal to the inclined surface of the key is formed at the rear end of the inclined surface of the torque transmission outer peripheral surface of the key.
  • the torque transmission mechanism according to the fourth aspect uses not the end face of the nut but the substantially cylindrical outer peripheral face arranged in parallel to the rotation shaft of the nut as the torque transmission outer peripheral face.
  • the shape of the outer peripheral surface of the nut is a curved surface or the outer region of the nut is surrounded and narrowed by the knob, torque from the knob to the nut can be reliably transmitted or cut off.
  • the inclined surface is formed on the outer peripheral surface of the key independent from the nut, and the key is disposed in the key groove provided on the outer peripheral surface of the nut.
  • the outer peripheral surface of the nut can be provided with an inclined surface that can be engaged and released by moving in the radial direction with respect to the rotation axis of the nut. .
  • the torque transmission inner peripheral surface may be formed on a cylindrical member that is detachably fitted to the inner peripheral surface of the knob.
  • the concave or convex portions on the inner peripheral surface of the torque transmission may wear when used for a long period of time, so if the inner peripheral surface of the torque transmission is formed on a cylindrical member separate from the knob body, It is convenient because the cylindrical member can be easily replaced when the transmission inner peripheral surface is worn. Further, there is an advantage that the knob body can be made of a lightweight plastic material that is unrelated to the cylindrical member considering wear resistance.
  • the nut is inserted into the through-hole provided in the vertical portion of the main body frame, the outer diameter is larger than the through-hole, and the nut from the trunk A flange extending in the radial direction may be provided.
  • the nut is inserted into the through hole, and a fixing ring having an outer diameter larger than the diameter of the through hole is fixed to the nut from the side opposite to the side where the flange contacts the vertical portion of the main body frame. Can be easily and rotatably attached to the vertical part of the main body frame.
  • the vertical part of the main body frame is sandwiched between the nut flange and the fixing ring via the resin washer, the backlash is reduced, and the rotation of the nut relative to the vertical part of the main body frame can be made smoother.
  • the nut or a part fixed to the nut is provided with an engagement hole
  • the knob is provided with a through hole that can communicate with the engagement hole. preferable.
  • the knob and the nut when the knob is turned so that the pressing plate is retracted from the side wall of the bathtub, the knob and the nut always rotate in synchronization without depending on the magnitude of the transmitted torque. Designed to be For this reason, if the user rotates the knob excessively even after the pressing plate has come into contact with the vertical part of the main body frame due to carelessness, etc., between the nut and the bolt shaft that has caused tensile stress in the axial direction. May cause large frictional force.
  • torque transmission is interrupted when the transmitted torque exceeds a predetermined value. Therefore, if the frictional force is excessive, the knob will not rotate around the nut even if the knob is turned. There is a case where the bolt shaft supporting the pressing plate cannot be advanced only by idling.
  • an engagement hole is provided in the nut or a part fixed to the nut, and a through hole that can communicate with the engagement hole is provided in the knob. Therefore, when the pressing plate cannot be moved forward, a rod-shaped part such as a connecting pin is inserted from the through hole of the knob to the engaging hole of the part fixed to the nut, and the knob and the nut are temporarily connected. It solves the above problem by making it possible to ensure the tuning of the knob and nut.
  • the bolt shaft protruding outward from the vertical portion on the opposite side of the vertical portion of the main body frame is provided inside the knob.
  • a chamber is provided for accommodation.
  • a torque transmission mechanism is provided in the middle of a path for transmitting torque from the knob to the nut.
  • the pressing plate can securely grip the side wall of the bathtub with a predetermined pressing force, and prevents the pressing of the pressing plate from being too strong to prevent the destruction of the bathtub side wall. You can also
  • FIG. 5 is an exploded view schematically showing an exploded state of the torque transmission handle shown in FIG. 4.
  • the torque transmission handle of the handrail for bathtubs provided with the torque transmission mechanism of the second aspect in which the arrangement of the annular member and the elastic body is changed in the axial direction with respect to the torque transmission surface is cut along the axis of the bolt shaft.
  • FIG. 8B is a cross-sectional view of the torque transmission handle shown in FIG.
  • FIG. 9 is an exploded view schematically showing an exploded state of the torque transmission handle shown in FIGS. 8a and 8b. It is a perspective view of the nut used with the torque transmission mechanism of the 4th mode.
  • FIG. 10b is a cross-sectional view of the nut shown in FIG. It is a perspective view of the cylindrical member used with the torque transmission mechanism of a 4th aspect, and fitted to the internal peripheral surface of a knob.
  • FIG. 11b is an end view of the tubular member shown in FIG. 11a.
  • FIG. 1 The main structure of the handrail 1 for a bathtub of a present Example is demonstrated using FIG.1 and FIG.2.
  • the whole handrail 1 for bathtubs of a present Example is shown by FIG. 2 shows the entire state in which the decorative covers 113 and 114 and the upper grip 13 of the handrail 1 for a bathtub shown in FIG. 1 are removed.
  • the bathtub handrail 1 is composed of a substantially L-shaped main body frame 11 and a substantially L-shaped movable frame 12.
  • the main body frame 11 has a vertical portion 111 and a horizontal portion 112, and is disposed on a side wall (not shown) of the bathtub.
  • the movable frame 12 has a horizontal portion and a vertical portion, and is slidably attached to the horizontal portion 112 of the main body frame 11.
  • the handrail 1 for bathtubs is mainly provided on the side of the bathtub (inside the bathtub) in order to assist the bathing from the bathtub and the upper grip 13 disposed above the sidewall of the bathtub in order to assist in entering and exiting the bathtub.
  • a side grip 14 to be arranged.
  • the upper grip 13 is detachably attached to the main body frame 11 using two legs 131, and the side grip 14 is detachably attached to the movable frame 12.
  • the handrail 1 for bathtubs of the present embodiment is opposed to the first pressing plate 15 and the first pressing plate 15 for sandwiching the bathtub side walls from the washing place side in order to fix the handrail 1 for bathtubs to the bathtub side wall. And a second pressing plate 16 for sandwiching the bathtub side wall from the bathtub side.
  • FIG. 3 shows a cross-sectional view of the bathtub handrail 1 of this embodiment cut along the axis of the bolt shaft 2.
  • the first pressing plate 15 is supported by the bolt shaft 2, and the bolt shaft 2 includes a nut 3 that is rotatably fixed to the vertical portion 111 of the main body frame 11. Screwed and supported.
  • a knob 4 for transmitting torque (rotational power) to the nut 3 is rotatably provided outside the nut 3. Further, outside the nut 3 and inside the knob 4, when the torque transmitted from the knob 4 to the nut 3 is less than a predetermined value, the torque is transmitted from the knob 4 to the nut 3, and the transmitted torque is transmitted.
  • a torque transmission mechanism 5 that cuts off torque transmission from the knob 4 to the nut 3 above a predetermined value is attached. Therefore, the pressing plate 15 can be screwed back and forth with respect to the main body frame 11 by the torque transmission handle 6 including the bolt shaft 2, the nut 3, the knob 4, and the torque transmission mechanism 5.
  • the torque transmission mechanism 5 of the bathtub handrail 1 rotates the bolt 3 that supports the pressing plate 15 by rotating the nut 3 by the knob 4, so that the nut 3 is a vertical portion of the body frame 11. 111 is rotatably attached. For this reason, even if the nut 3 is rotated, it does not move in the axial direction from the vertical portion 111 of the main body frame 11, and only the bolt shaft 2 is screwed back and forth.
  • the knob 4 for rotating the nut 3 is rotatably mounted on the nut 3 and is rotatably attached to the vertical portion 111 of the main body frame 11 in the same manner as the nut 3.
  • a flange portion 41 having an enlarged diameter is provided at the base of the body portion of the knob 4, and the knob 4 is smaller than the flange portion 41.
  • the knob 4 is disposed so as to cover the rear end portion of the bolt shaft 2 via the nut 3, so that the knob 4 is connected in series with the rear end of the bolt shaft 2.
  • the length of the portion of the knob 4 protruding outward from the main body frame 11 can be made shorter and more compact than the other types of torque transmission handles arranged.
  • the bathtub handrail 1 of the present embodiment transmits torque from the knob 4 to the nut 3 in the course of transmitting torque from the knob 4 to the nut 3 when the transmitted torque is less than a predetermined value.
  • a torque transmission mechanism 5 that interrupts transmission of torque from the knob 4 to the nut 3 is provided.
  • the torque transmitted from the knob 4 to the nut 3 is predetermined.
  • the value in other words, when the pressing force (or tightening force) of the pressing plate 15 against the side wall of the bathtub reaches a predetermined value or more, the transmission of torque from the knob 4 to the nut 3 is cut off.
  • the pressing plate 15 can securely grip the side wall of the bathtub with a predetermined pressing force, and the pressing plate 15 is prevented from being destroyed due to the pressing force of the pressing plate 15 being too strong.
  • FIG. 4 shows a cross-sectional view of the torque transmission handle 6 provided with the torque transmission mechanism 5 according to the first aspect, cut along the axis of the bolt shaft 2.
  • FIG. 5 schematically shows a state where the torque transmission handle 6 shown in FIG. 4 is disassembled in the axial direction.
  • the torque transmission handle 6 having the torque transmission mechanism 5 of the first aspect includes the bolt shaft 2 that supports the pressing plate 15, and the bolt shaft 2.
  • the nut 3 includes a trunk portion 31 that is inserted into a through-hole provided in the vertical portion 111 of the main body frame 11 and a flange 32 that is larger than the through-hole and extends in the radial direction from the trunk portion 31. Then, the body portion 31 of the nut 3 is inserted into the through hole, and the second annular member 8 having an outer diameter larger than that of the through hole is screwed 33 from the side opposite to the side where the flange 32 contacts the vertical portion 111 of the main body frame 11. The nut 3 is rotatably attached to the vertical portion 111 of the main body frame 11 by being screwed to the flange 32 (see FIGS. 3 and 5).
  • the nut 3 is attached to the vertical portion 111 of the main body frame 11 via the resin washer 34, smooth rotation with little play of the nut 3 is reinforced.
  • the torque transmission mechanism 5 of the first aspect includes a substantially circular torque transmission surface 71 orthogonal to the rotation axis of the knob 4, and is synchronized with the rotation of the knob 4 and along the rotation axis of the knob 4.
  • An annular member 7 that is slidably mounted, a torque transmission surface 71 that is in contact with the torque transmission surface 71, and a substantially circular torque transmission surface 81 that is orthogonal to the rotation axis of the nut 3 are detachably mounted on the nut 3.
  • the second annular member 8 and the coil spring 10 that urges the torque transmission surface 71 of the annular member 7 toward the torque transmission surface 81 of the second annular member 8 are provided. Further, the end of the coil spring 10 is fixed by a stopper 36 attached to the end of the nut 3 with a screw 35.
  • the torque transmission surface 71 and the torque transmission surface 81 When the torque transmitted to each of the torque transmission surface 71 and the torque transmission surface 81 is less than a predetermined value, the torque transmission surface 71 and the torque transmission surface 81 are mutually locked, and the transmitted torque is Above a predetermined value, it includes concave portions or convex portions 711 and 811 each having an inclined surface that causes slippage between the torque transmission surface 71 and the torque transmission surface 81.
  • the knob 4 and the annular member 7 are synchronized with each other when the annular member 7 is mounted in the knob 4. (Not shown) is ensured by fitting with the irregularities 72 formed on the outer peripheral surface of the annular member 7.
  • the second annular member 8 and the nut 3 are synchronized with each other when the second annular member 8 is attached to the nut 3 so that the plurality of irregularities 38 formed on the outer peripheral surface of the nut 3 are This is ensured by fitting with the irregularities 82 formed on the inner peripheral surface of the member 8.
  • the center of the torque transmission surface 71 and the center of the torque transmission surface 81 are arranged on the common rotating shaft of the knob 4 and the nut 3.
  • concave / convex portions 711 and 811 each including a slope inclined from the torque transmission surface 71 or the torque transmission surface 81 are formed.
  • the inclined surface of the torque transmitting surface 71 and the inclined surface of the torque transmitting surface 81 are such that when the knob 4 is turned so that the pressing plate 15 moves forward toward the side wall of the bathtub, the opposing inclined surface facing each other rises. There is a gradient.
  • the annular member 7 having the torque transmission surface 71 is slidably mounted along the rotation axis of the knob 4 between the inner peripheral surface of the knob 4 and the outer peripheral surface of the nut 3, and the torque transmission is performed by the coil spring 10. It is biased toward the receiving surface 81.
  • a vertical surface substantially orthogonal to the torque transmission surface 71 is formed at the rear end of the inclined surface of the torque transmission surface 71, and the torque transmission surface 81 is approximately at the rear end of the inclined surface of the torque transmission surface 81.
  • An orthogonal vertical plane is formed (see FIG. 5). The vertical surface of the torque transmission surface 71 and the vertical surface of the torque transmission surface 81 are brought into contact with each other and engaged when the knob 4 is rotated so that the pressing plate 15 is retracted from the side wall of the bathtub. Therefore, when the knob 4 is turned so that the pressing plate 15 moves backward from the side wall of the bathtub, the knob 4 and the nut 3 always rotate in synchronism regardless of the magnitude of the transmitted torque.
  • the torque transmission mechanism 5 uses the end surface of the nut 3 orthogonal to the rotation axis of the nut 3 as the torque transmission surface 81, but from the knob 4 to the nut 3. Torque can be reliably transmitted or cut off. This is because in the torque transmission mechanism 5 of the first aspect, the torque transmission surface 81 provided on the nut 3 is formed on the second annular member 8 attached to the outer peripheral surface of the nut 3, so that the original nut 3 This is because the torque transmission surface 81 having a larger area than the end surface of the nut 3 can be provided on the outer peripheral surface of the nut 3.
  • the thickness (outside dimension) of the end portion of the nut 3 is increased to widen the area of the end surface of the nut 3, and the torque transmission surface 81 is not the outer peripheral surface of the nut 3 but the nut that is the original end surface of the nut 3. 3, the torque from the knob 4 to the nut 3 can be transmitted or cut off.
  • the annular member 7 having the torque transmission surface 71 is disposed so as to face the side end surface of the nut 3, and the torque transmission surface 81 provided with the torque transmission surface 71 of the annular member 7 on the side end surface of the nut 3.
  • the coil spring 10 is disposed so as to be biased toward the.
  • FIG. 6 shows a cross-sectional view of the torque transmission handle 6a provided with the torque transmission mechanism 5a of the second aspect taken along the axis of the bolt shaft 2. As shown in FIG.
  • the torque transmission mechanism 5a according to the second aspect is the same as the first aspect (FIG. 4) in that the annular member 7 formed with the torque transmission surface 71 and the nut 3 formed with the torque transmission surface 81 are arranged in the axial direction.
  • the torque transmission surface 71a of the annular member 7a is slightly changed so that the torque transmission surface 81a of the nut 3a is biased by the disc spring 10a by changing the position and shape of the coil spring 10. .
  • the torque transmission handle 6 a having the torque transmission mechanism 5 a of the second aspect includes a bolt shaft 2 that supports the pressing plate 15, and a nut 3 a that is screwed with the bolt shaft 2. And a knob 4 mounted on the nut 3 a, and a torque transmission mechanism 5 a disposed between the nut 3 a and the knob 4.
  • the nut 3a includes a trunk portion 31a that is inserted into a through-hole provided in the vertical portion 111 of the main body frame 11, and a flange 32a that is larger than the through-hole and extends in the radial direction from the trunk portion 31a. Then, the body 31a of the nut 3a is inserted into the through hole, and the fixing ring 9 having an outer diameter larger than that of the through hole is inserted by the screw 33 from the side opposite to the side where the flange 32a contacts the vertical part 111 of the main body frame 11.
  • the nut 3 a is rotatably attached to the vertical portion 111 of the main body frame 11 by screwing to the main frame 11.
  • the nut 3a is attached to the vertical portion 111 of the main body frame 11 via the resin washer 34, smooth rotation with little play of the nut 3a is reinforced.
  • the torque transmission mechanism 5a of the second aspect includes a substantially circular torque transmission surface 71a orthogonal to the rotation axis of the knob 4, and is synchronized with the rotation of the knob 4 and along the rotation axis of the knob 4.
  • An annular member 7a that is slidably mounted, a substantially circular torque transmission surface 81a that is in contact with the torque transmission surface 71a and orthogonal to the rotation axis of the nut 3a, and is detachably attached to the nut 3a.
  • the second annular member 8a and the coil spring 10 that urges the torque transmission surface 71a of the annular member 7a toward the torque transmission surface 81a of the second annular member 8a are provided.
  • the end of the coil spring 10 is fixed by a stopper 36 attached to the end of the nut 3 with a screw 35.
  • a stopper 36 is attached to the end of the nut 3a with a screw 35 in order to reduce backlash of the nut 3a in the knob 4.
  • the torque transmission surface 71a and the torque transmission surface 81a are mutually locked, and the transmitted torque is Above the predetermined value, it includes a concave portion or a convex portion provided with an inclined surface that causes slippage between the torque transmission surface 71a and the torque transmission surface 81a.
  • the tuning of the knob 4 and the annular member 7a is such that when the annular member 7a is mounted in the knob 4, a plurality of irregularities formed on the inner circumferential surface of the knob 4 are formed on the outer circumferential surface of the annular member 7a. Guaranteed by mating with the irregularities formed on it.
  • the second annular member 8a and the nut 3a are synchronized with each other when the second annular member 8a is mounted on the nut 3a. This is ensured by fitting with the unevenness formed on the inner peripheral surface of 8a.
  • each component is synchronized with the inner circumferential surface of the annular member 7a and the outer circumferential surface of the nut 3a so that the annular member 7a and the nut 3a are synchronized with each other. It is good also as a combination which synchronizes the 2nd annular member 8a and the knob 4 by providing an unevenness
  • the center of the torque transmission surface 71a and the center of the torque transmission surface 81a are arranged on the common rotation axis of the knob 4 and the nut 3a.
  • a concave / convex portion including a slope inclined from the torque transmission surface 71a or the torque transmission surface 81a is formed on the torque transmission surface 71a and the torque transmission surface 81a.
  • the inclined surface of the torque transmitting surface 71a and the inclined surface of the torque transmitting surface 81a are such that when the knob 4 is turned so that the pressing plate 15 advances toward the side wall of the bathtub, the opposing inclined surface facing each other rises. There is a gradient.
  • the annular member 7a having the torque transmission surface 71a is slidably mounted along the rotation axis of the knob 4 between the inner peripheral surface of the knob 4 and the outer peripheral surface of the nut 3, and is torqued by the disc spring 10a. It is biased toward the transmission surface 81a.
  • a vertical surface substantially orthogonal to the torque transmission surface 71a is formed at the rear end of the inclined surface of the torque transmission surface 71a, and torque transmission is performed at the rear end of the inclined surface of the torque transmission surface 81a.
  • a vertical surface substantially orthogonal to the surface 81a is formed. The vertical surface of the torque transmission surface 71a and the vertical surface of the torque transmission surface 81a contact and engage with each other when the knob 4 is turned so that the pressing plate 15 is retracted from the side wall of the bathtub. Therefore, when the knob 4 is turned so that the pressing plate 15 moves backward from the side wall of the bathtub, the knob 4 and the nut 3a always rotate in synchronism regardless of the magnitude of the transmitted torque.
  • the torque transmission mechanism 5a of the second aspect uses the end surface of the nut 3a orthogonal to the rotation axis of the nut 3a as the torque transmission surface 81a. Torque can be reliably transmitted or cut off. This is because in the torque transmission mechanism 5a of the second mode, the torque transmission surface 81a provided on the nut 3a is formed on the second annular member 8a attached to the outer peripheral surface of the nut 3a, so that the original nut 3a This is because the torque transmission surface 81a having a larger area than the end surface of the nut 3a can be provided on the outer peripheral surface of the nut 3a.
  • the chamber 42 and the flange portion 41 are provided in the knob 4 so that the pressing plate 15 is screwed back and forth.
  • the effect of preventing the shaft 2 from being exposed and suppressing the length of the knob 4 that rotates the nut 3a to protrude outward from the main body frame 11 is the torque transmission handle provided with the torque transmission mechanism 5 of the first aspect. The same effect as in the case of 6 can be obtained.
  • the pressing plate 15 can reliably grip the side wall of the bathtub with a predetermined pressing force, and the pressing force of the pressing plate 15 is too strong. As a result, the same effect as that of the torque transmission handle 6 provided with the torque transmission mechanism 5 of the first aspect can be obtained.
  • FIG. 7 shows a cross-sectional view of the torque transmission handle 6c provided with the torque transmission mechanism 5c of the third aspect, cut along the axis of the bolt shaft 2. As shown in FIG.
  • the torque transmission mechanism 5c according to the third aspect is the torque transmission mechanism 5 according to the first aspect in which the torque transmission surface 71 of the annular member 7 urges the torque transmission surface 81 of the nut 3 by the coil spring 10 ( 4), the torque transmission surface formed on the annular member 8c that synchronizes with the nut 3c is replaced with the torque transmission surface of the knob 4 by the coil spring 10 by switching the arrangement of the torque transmission surface and the torque transmission surface in the axial direction. 71c is changed to be energized.
  • the torque transmission handle 6 c having the torque transmission mechanism 5 c of the third aspect includes a bolt shaft 2 that supports the pressing plate 15, and a nut 3 c that is screwed with the bolt shaft 2. And a knob 4 mounted on the nut 3 c, and a torque transmission mechanism 5 c disposed between the nut 3 c and the knob 4.
  • the nut 3c includes a barrel portion 31c that is inserted into a through-hole provided in the vertical portion 111 of the main body frame 11, and a flange 32c that is larger than the through-hole and extends in the radial direction from the barrel portion 31c. Then, the body 31c of the nut 3c is inserted into the through hole, and the fixing ring 9 having an outer diameter larger than that of the through hole is connected to the nut 3c by the screw 33 from the side opposite to the side where the flange 32c contacts the vertical part 111 of the main body frame 11. The nut 3c is rotatably attached to the vertical portion 111 of the main body frame 11 by being screwed.
  • the nut 3c is attached to the vertical portion 111 of the main body frame 11 via the resin washer 34, smooth rotation with little play of the nut 3c is reinforced.
  • the torque transmission mechanism 5c of the third aspect includes a third annular member 7c having a substantially circular torque transmission surface 71c orthogonal to the rotation axis of the knob 4 and detachably attached to the knob 4.
  • a substantially circular torque transmission surface 81c that is in contact with the transmission surface 71c and orthogonal to the rotation axis of the nut 3c is provided, and is slidable along the rotation axis of the nut 3c in synchronization with the rotation of the nut 3c.
  • An annular member 8c is provided, and a coil spring 10 that biases the torque transmission surface 81c of the annular member 8c toward the torque transmission surface 71c of the knob 4 is provided. Further, the end of the coil spring 10 is fixed by a stopper 36 attached to the end of the nut 3c with a screw 35.
  • the tuning of the knob 4 and the third annular member 7c is such that when the third annular member 7c is mounted in the knob 4, a plurality of irregularities formed on the inner peripheral surface of the knob 4 are This is ensured by fitting with the unevenness formed on the outer peripheral surface of the third annular member 7c. Further, when the annular member 8c is mounted on the nut 3c, a plurality of irregularities formed on the outer peripheral surface of the nut 3c are formed on the inner peripheral surface of the annular member 8c. Guaranteed by mating with uneven surface.
  • each component is synchronized with the third annular member 7c and the nut 3c by providing irregularities on the inner peripheral surface of the third annular member 7c and the outer peripheral surface of the nut 3c. It is good also as a combination which synchronizes the annular member 8c and the knob 4 by providing an unevenness
  • the center of the torque transmission surface 71c and the center of the torque transmission surface 81c are arranged on the common rotary shaft of the knob 4 and the nut 3c.
  • a concave / convex portion including a slope inclined from the torque transmission surface 71c or the torque transmission surface 81c is formed on the torque transmission surface 71c and the torque transmission surface 81c.
  • the inclined surface of the torque transmitting surface 71c and the inclined surface of the torque transmitting surface 81c are arranged so that the opposing inclined surface facing each other rises when the knob 4 is turned so that the pressing plate 15 advances toward the side wall of the bathtub. There is a gradient.
  • the annular member 8c having the torque transmission surface 81c is mounted so as to be slidable along the rotation axis of the nut 3c between the inner peripheral surface of the knob 4 and the outer peripheral surface of the nut 3c. It is biased toward the transmission surface 71c.
  • a vertical surface substantially orthogonal to the torque transmission surface 71c is formed at the rear end of the inclined surface of the torque transmission surface 71c, and torque transmission is performed at the rear end of the inclined surface of the torque transmission surface 81c.
  • a vertical surface substantially orthogonal to the surface 81c is formed. The vertical surface of the torque transmission surface 71c and the vertical surface of the torque transmission surface 81c are brought into contact with each other when the knob 4 is turned so that the pressing plate 15 is retracted from the side wall of the bathtub. Therefore, when the knob 4 is turned so that the pressing plate 15 moves backward from the side wall of the bathtub, the knob 4 and the nut 3c always rotate in synchronism regardless of the magnitude of the transmitted torque.
  • the torque transmission mechanism 5c uses the end surface of the nut 3c orthogonal to the rotation axis of the nut 3c as the torque transmission surface 81c, but from the knob 4 to the nut 3c. Torque can be reliably transmitted or cut off. This is because in the torque transmission mechanism 5c of the third aspect, the torque transmission surface 81c provided on the nut 3c is formed on the annular member 8c slidably disposed on the outer peripheral surface of the nut 3c, so that the original nut This is because the torque transmitting surface 81c having a larger area than the end surface of 3c can be provided on the outer peripheral surface of the nut 3c.
  • the chamber 42 and the flange portion 41 are provided in the knob 4 so that the pressing plate 15 is screwed back and forth.
  • the effect of preventing the shaft 2 from being exposed and suppressing the length of the knob 4 that rotates the nut 3c to protrude outward from the main body frame 11 is the torque transmission handle provided with the torque transmission mechanism 5 of the first aspect. The same effect as in the case of 6 can be obtained.
  • the pressing plate 15 can reliably grip the side wall of the bathtub with a predetermined pressing force, and the pressing force of the pressing plate 15 is too strong. As a result, the same effect as that of the torque transmission handle 6 provided with the torque transmission mechanism 5 of the first aspect can be obtained.
  • FIG. 8 a shows a cross-sectional view of the torque transmission handle 6 b provided with the torque transmission mechanism 5 b of the fourth mode, taken along the axis of the bolt shaft 2.
  • FIG. 8b shows a cross-sectional view of the torque transmission handle 6b shown in FIG.
  • FIG. 9 schematically shows an exploded state of the torque transmission handle 6b shown in FIGS. 8a and 8b.
  • FIG. 10a shows a perspective view of the nut 3b used in the torque transmission mechanism 5b of the fourth mode.
  • FIG. 10b shows a cross-sectional view of the nut 3b shown in FIG.
  • FIG. 11a shows a cylindrical member 7b used in the torque transmission mechanism 5b of the fourth aspect and fitted to the inner peripheral surface of the knob 4b.
  • FIG. 11b shows an end view of the cylindrical member 7b shown in FIG. 11a.
  • the torque transmission mechanism 5b of the fourth aspect is arranged such that the torque transmission surfaces 71, 71a, 71c and the torque transmission surfaces 81, 81a, 81c are orthogonal to the rotation axes of the knob 4 and the nuts 3, 3a, 3c. This is greatly different from the torque transmission mechanisms 5, 5a, 5c of the first to third modes.
  • the torque transmission surface is provided on the inner peripheral surface of the knob 4b (hereinafter referred to as “torque transmission inner peripheral surface 71b”), and the torque transmission surface is on the outer peripheral surface of the nut 3b. (Hereinafter referred to as “torque transmission outer peripheral surface 81b”).
  • the annular members 7, 7a, 7c of the torque transmission mechanisms 5, 5a, 5c according to the first to third aspects are formed on the outer peripheral surface of the nut 3b.
  • the groove 38b is replaced with a key 8b that is movable in the radial direction with respect to the rotation axis of the nut 3b.
  • the torque transmission handle 6 b including the torque transmission mechanism 5 b includes the bolt shaft 2 that supports the pressing plate 15, and the bolt shaft 2.
  • the nut 3b includes a trunk portion 31b that is inserted into a through-hole provided in the vertical portion 111 of the main body frame 11, and a flange 32b that is larger than the through-hole and extends in a radial direction from the trunk portion 31b. Then, the body 31b of the nut 3b is inserted into the through hole, and the fixing ring 9 having an outer diameter larger than that of the through hole is attached to the nut 3b by the screw 33 from the side opposite to the side where the flange 32b contacts the vertical part 111 of the main body frame 11. The nut 3 b is rotatably attached to the vertical portion 111 of the main body frame 11 by screwing to the main frame 11.
  • the nut 3b is attached to the vertical portion 111 of the main body frame 11 via the resin washer 34, smooth rotation with little play of the nut 3b is reinforced.
  • the torque transmission mechanism 5b of the fourth aspect includes a substantially cylindrical torque transmission inner peripheral surface 71b parallel to the rotation axis of the knob 4b, and a cylinder that is detachably fitted to the inner peripheral surface of the knob 4b.
  • a key groove 38b disposed in parallel with the torque transmission inner peripheral surface 71b and a torque transmission outer peripheral surface 81b that is in contact with the torque transmission inner peripheral surface 71b, and is movable in the radial direction with respect to the rotation shaft of the nut 3b.
  • a coil spring 10b for urging the torque transmission outer peripheral surface 81b of the key 8b toward the torque transmission inner peripheral surface 71b of the knob 4b.
  • the torque transmission inner peripheral surface 71b and the torque transmission outer peripheral surface 81b of the key 8b are connected to each other when the torque transmitted to each of them is less than a predetermined value. If the torque to be transmitted and the transmitted torque is equal to or greater than a predetermined value, the concave portion or the convex portion 711b, 811b having an inclined surface that causes slippage between the torque transmission inner peripheral surface 71b and the torque transmission outer peripheral surface 81b are included. (See FIGS. 10a and 10b and FIGS. 11a and 11b).
  • the tuning of the knob 4b and the cylindrical member 7b is formed on the inner peripheral surface of the knob 4b when the cylindrical member 7b is mounted in the knob 4b.
  • the plurality of irregularities (not shown) formed is ensured by fitting with the irregularities 72b formed on the outer peripheral surface of the cylindrical member 7b.
  • the rotation shaft of the torque transmission inner peripheral surface 71b and the rotation shaft of the torque transmission outer peripheral surface 81b are the same knob 4b and nut. It is arrange
  • the nut 3b A key 8b that is movable in the radial direction with respect to the rotation axis is arranged.
  • a concave / convex portion 811b including an inclined surface is formed on the torque transmission outer peripheral surface 81b of the key 8b, and the key 8b is urged toward the torque transmission inner peripheral surface 71b by the coil spring 10b.
  • a vertical surface 712b substantially orthogonal to the torque transmission inner peripheral surface 71b is formed at the rear end of the inclined surface of the torque transmission inner peripheral surface 71b of the knob 4b. ing. Further, since the cross-section in the width direction of the key 8b has a substantially trapezoidal shape, a vertical surface 812b substantially orthogonal to the inclined surface of the key 8b is formed at the rear end of the inclined surface of the torque transmitting outer peripheral surface 81b of the key 8b. Is formed.
  • the vertical surface 712b of the torque transmission inner peripheral surface 71b of the knob 4b and the vertical surface 812b of the torque transmission outer peripheral surface 81b of the key 8b contact each other when the knob 4b is rotated so that the pressing plate 15 is retracted from the side wall of the bathtub. Engage and engage. Therefore, when the knob 4b is turned so that the pressing plate 15 moves backward from the side wall of the bathtub, the knob 4b and the nut 3b always rotate in synchronism regardless of the magnitude of the transmitted torque.
  • the torque transmission mechanism 5b uses the substantially cylindrical outer peripheral surface 39b disposed in parallel to the rotation axis of the nut 3b as the torque transmission outer peripheral surface 81b.
  • the torque from the knob 4b to the nut 3b can be reliably transmitted or cut off. This is because in the torque transmission mechanism 5b of the fourth aspect, an inclined surface is formed on the outer peripheral surface of the key 8b independent from the nut 3b, and the key 8b is placed in the key groove 38b provided on the outer peripheral surface 39b of the nut 3b.
  • the effect of preventing the shaft 2 from being exposed and suppressing the length of the knob 4b that rotates the nut 3b outward from the main body frame 11 is that the torque transmission handle provided with the torque transmission mechanism 5 of the first aspect. The same effect as in the case of 6 can be obtained.
  • the pressing plate 15 can surely grip the side wall of the bathtub with a predetermined pressing force, and the pressing force of the pressing plate 15 is too strong. As a result, the same effect as that of the torque transmission handle 6 provided with the torque transmission mechanism 5 of the first aspect can be obtained. Further, in the torque transmission mechanism 5b of the fourth aspect, although not shown, a key having a key groove and a torque transmission inner peripheral surface is disposed on the inner peripheral surface of the cylindrical member 7b, and the nut 3b is provided on the outer peripheral surface.
  • engagement holes are provided in the nuts 3, 3 a, 3 c, 3 b or the parts 8, 36 fixed to the nuts,
  • the knobs 4 and 4b are provided with through holes 43 (see FIG. 1) that can communicate with the engagement holes.
  • the torque transmission mechanisms 5, 5 a, 5 c, 5 b of the present embodiment are always independent of the magnitude of the transmitted torque when turning the knobs 4, 4 b so that the pressing plate 15 is retracted from the side wall of the bathtub.
  • the knobs 4, 4b and the nuts 3, 3a, 3c, 3b are designed to rotate synchronously. Therefore, if the knobs 4 and 4b are excessively turned even after the pressing plate 15 contacts the vertical portion 111 of the main body frame 11 due to carelessness of the user, the nuts 3, 3a, 3c, 3b, A large frictional force may be generated between the bolt shaft 2 in which a tensile stress is generated in the axial direction.
  • the torque transmission is interrupted when the transmitted torque exceeds a predetermined value. Therefore, if the frictional force is excessive, the knob 4, Even if the knob 4b is turned, the knobs 4 and 4b are merely idle around the nuts 3, 3a, 3c and 3b, and the bolt shaft 2 supporting the pressing plate 15 may not be able to advance.
  • the nuts 3, 3a, 3c, 3b or the parts 8, 36 fixed to the nuts are provided with engagement holes, and the knobs 4, 4b are provided.
  • the pressing plate 15 cannot be moved forward by providing the through hole 43 that can communicate with the engagement hole, the nut 3, 3a, 3c, 3b or the A rod-shaped part (not shown) such as a connecting pin is inserted into the engaging holes of the parts 8 and 36 fixed to the nut so that the knobs 4 and 4b and the nuts 3 and 3a, 3c and 3b can be temporarily connected.
  • the above problem is solved by guaranteeing the synchronization of the knobs 4, 4b and the nuts 3, 3a, 3c, 3b.

Abstract

The purpose of the present invention is to provide a handrail for a bathtub, the handrail being of a type in which a pressing plate is pressed against a bathtub sidewall by rotating a knob, wherein the handrail is configured in such a manner that the position of the knob does not change even if the pressing plate is moved forward and backward by screw threads and that the pressing force of the pressing plate is controlled so as not to be greater than or equal to a predetermined value. A handrail for a bathtub, the handrail being of a type in which a pressing plate is pressed against a bathtub sidewall by rotating a knob, wherein the handrail is configured in such a manner that a chamber (hollow cavity) for receiving a bolt shaft protruding from a body frame is provided within the knob and that a torque transmission mechanism is provided in a torque transmission path from the knob to a nut, the torque transmission mechanism being configured in such a manner that, when torque to be transmitted is lower than a predetermined value, the torque transmission mechanism transmits the torque and, when the torque to be transmitted has the predetermined value, the torque transmission mechanism blocks the transmission of the torque.

Description

浴槽用手摺りHandrail for bathtub
　本発明は、浴槽の側壁へ着脱自在に取り付けられる浴槽用手摺りであって、押圧板を支承し且つナットと螺合したボルト軸を螺進退させるためのトルク伝達ハンドルの構造に関する。特に本発明は、ボルト軸を螺進退させても浴槽用手摺り本体に対するハンドルの位置が変わらず、且つハンドルから伝達されるトルクが所定の値未満である時はノブからナットへトルクを伝達し、伝達されるトルクが所定の値以上になった時は該トルクの伝達を遮断するトルク伝達機構を備えたトルク伝達ハンドルに関する。 The present invention relates to a structure of a torque transmission handle that is a handrail for a bathtub that is detachably attached to a side wall of the bathtub, and that supports a pressing plate and screw a bolt shaft screwed with a nut. In particular, the present invention transmits torque from the knob to the nut when the position of the handle relative to the handrail body for the bathtub does not change even when the bolt shaft is screwed back and forth, and the torque transmitted from the handle is less than a predetermined value. The present invention relates to a torque transmission handle provided with a torque transmission mechanism that interrupts transmission of torque when the transmitted torque exceeds a predetermined value.
　従来より、高齢者等が浴槽に出入りする際に身体を容易に支持することができるように、浴槽の側壁へ着脱自在に取り付けることができる浴槽用手摺りが提供されている。浴槽用手摺りは、使用者によって使用者の全体重を預けられる場合があるので、浴槽の側壁に強固に取り付けられなければならない。このため、一般に浴槽用手摺りは、ハンドル又はノブを回転することによってナットと螺合したボルト軸を螺進退させ、該ボルト軸に支承された押圧板を浴槽の側壁へ強力に押し付けることができる押圧機構を備えている。 Conventionally, a handrail for a bathtub that can be detachably attached to the side wall of the bathtub has been provided so that an elderly person can easily support the body when entering and leaving the bathtub. Since the handrail for bathtubs may leave the total weight of the user by the user, it must be firmly attached to the side wall of the bathtub. For this reason, generally, a handrail for a bathtub can rotate a handle or a knob so that a bolt shaft screwed with a nut is screwed back and forth, and a pressing plate supported by the bolt shaft can be strongly pressed against a side wall of the bathtub. A pressing mechanism is provided.
　しかしながら、上述のタイプの浴槽用手摺りは、使用者がハンドル又はノブを回して押圧板を螺進退させることにより、浴槽用手摺りを浴槽の側壁へ直接取り付けるものである。そのため、押圧板の締付け力（又は押付け力）が強過ぎると浴槽の側壁が壊れ、逆に押圧板の締付け力が不十分であると、浴槽用手摺りが浴槽の側壁から脱離してしまうという問題があった。そこで、上記問題を解消するため、例えば特開２０１２－２４５９２号公報（特許文献１）に記載されているように、押圧板を螺進退させるハンドル又はノブへ回動伝達遮断機構（定トルク伝達機構）を配置し、押圧板によって一定以上の押付け力が浴槽の側壁へ伝達されないようにした浴槽用手摺りが開発されている。 However, the above-mentioned type of handrail for a bathtub is one in which the user manually attaches the handrail for the bathtub to the side wall of the bathtub by turning the handle or the knob and screwing the pressing plate back and forth. Therefore, the side wall of the bathtub is broken if the tightening force (or pressing force) of the pressing plate is too strong, and conversely, if the tightening force of the pressing plate is insufficient, the handrail for the bathtub is detached from the side wall of the bathtub. There was a problem. In order to solve the above problem, for example, as described in Japanese Patent Application Laid-Open No. 2012-24592 (Patent Document 1), a rotation transmission blocking mechanism (constant torque transmission mechanism) is applied to a handle or knob for screwing the pressing plate back and forth. ) And a handrail for bathtubs has been developed that prevents a pressing force exceeding a certain level from being transmitted to the side wall of the bathtub.
　特許文献１に記載された浴槽用手摺りは、ナットを浴槽用手摺りへ回動不能に固定し、そしてノブによりナットと螺合したボルト軸を直接回動することによって、押圧板を支承したボルト軸を螺進退させるものである。このため、特許文献１に記載された浴槽用手摺りでは、ノブからボルト軸へ一定以上の回動力が伝わらないように、ノブとボルト軸の間に回動伝達遮断機構が取り付けられている。 The handrail for bathtubs described in Patent Literature 1 supports the pressing plate by fixing the nut to the handrail for the bathtub so as not to rotate, and directly rotating the bolt shaft screwed with the nut by the knob. The bolt shaft is screwed back and forth. For this reason, in the handrail for bathtubs described in Patent Document 1, a rotation transmission blocking mechanism is attached between the knob and the bolt shaft so that turning force beyond a certain level is not transmitted from the knob to the bolt shaft.
　ところが、特許文献１に記載されたタイプの浴槽用手摺りでは、ノブを回動してボルト軸を後退させると、ボルト軸の後端に取り付けられたノブが浴槽用手摺り本体から外方へ突出するので、使用者にとって危険であり邪魔となる。そのため、特開２００２－２０９７８１号公報（特許文献２）、特開２００３－１２５９６７号公報（特許文献３）および特開２００５－７０１１号公報（特許文献４）に記載されているように、ナットを浴槽用手摺りへ回動自在に固定し、そしてノブによりナットを回動することによって、押圧板を支承したボルト軸を螺進退させるタイプの浴槽用手摺りが開発されている。このタイプの浴槽用手摺りでは、ノブはナットに固定されるので、ノブが浴槽用手摺り本体から外方へ突出するのが抑制される。 However, in the handrail for bathtubs of the type described in Patent Document 1, when the knob is rotated to retract the bolt shaft, the knob attached to the rear end of the bolt shaft is moved outward from the bathtub handrail main body. Since it protrudes, it is dangerous and disturbing for the user. Therefore, as described in JP-A-2002-209781 (Patent Document 2), JP-A-2003-125967 (Patent Document 3) and JP-A-2005-7011, (Patent Document 4), A bathtub handrail of a type in which a bolt shaft supporting a pressing plate is screwed back and forth by being rotatably fixed to a bathtub handrail and rotating a nut by a knob has been developed. In this type of bathtub handrail, the knob is fixed to the nut, so that the knob is prevented from protruding outward from the bathtub handrail body.
　しかしながら、ナットを回動することによってボルト軸を螺進退させるタイプの浴槽用手摺りでは、特許文献１に記載された浴槽用手摺りのような回動伝達遮断機構を備えた浴槽用手摺りは開発されていない。 However, in the bathtub handrail of the type in which the bolt shaft is screwed back and forth by rotating the nut, the bathtub handrail provided with the rotation transmission blocking mechanism such as the bathtub handrail described in Patent Document 1 is Not developed.
　なぜなら、ナットに螺合されたボルト軸を直接回動することによってボルト軸を螺進退させるタイプの浴槽用手摺りの場合、回動伝達遮断機構は、特に取付け構造や取付けスペースにおいて制限を受けることなく、単にボルト軸の後端とノブとの間に配設することができる。しかしながら、ナットを回動することによってボルト軸を螺進退させるタイプの浴槽用手摺りの場合は、ナットの端面の面積が狭く、ナットの外周面の形状は曲面であるため、単純にナットとノブとの間に回動伝達遮断機構を配設することができないからである。また、ナットの外部領域もノブによって囲まれるため、回動伝達遮断機構を取り付けるためのスペースも極めて限られているという問題もあるからである。 This is because, in the case of a handrail for bathtubs in which the bolt shaft is screwed back and forth by directly rotating the bolt shaft screwed to the nut, the rotation transmission blocking mechanism is limited particularly in the mounting structure and the installation space. Instead, it can be simply disposed between the rear end of the bolt shaft and the knob. However, in the case of a handrail for bathtubs in which the bolt shaft is screwed back and forth by rotating the nut, the area of the nut end surface is narrow and the shape of the outer peripheral surface of the nut is a curved surface. This is because the rotation transmission blocking mechanism cannot be disposed between the two. Further, since the outer region of the nut is also surrounded by the knob, there is a problem that the space for attaching the rotation transmission blocking mechanism is extremely limited.
　このため、ノブによりナットを回動することによってボルト軸を螺進退させるタイプの浴槽用手摺りでは、押圧板の締付け力が強過ぎると浴槽の側壁が壊れ、逆に押圧板の締付け力が不足すると浴槽の側壁から脱離してしまうという問題が依然として残っていた。 For this reason, in the type of handrail for bathtubs in which the bolt shaft is screwed back and forth by rotating the nut with a knob, the side wall of the bathtub is broken if the pressing plate is tightened too much, and conversely, the pressing plate is insufficiently tightened. Then, the problem of detaching from the side wall of the bathtub still remained.
特開２０１２－２４５９２号公報JP 2012-24592 A 特開２００２－２０９７８１号公報JP 2002-209781 A 特開２００３－１２５９６７号公報JP 2003-125967 A 特開２００５－７０１１号公報Japanese Patent Laid-Open No. 2005-7011
　そこで、本発明は、浴槽用手摺りを浴槽の側壁へ安全且つ確実に着脱自在に取り付けるため、ノブによりナットを回動することによって押圧板を支承したボルト軸を螺進退させるタイプの浴槽用手摺りにおいて、ボルト軸を螺進退させても浴槽用手摺り本体に対するノブの位置が変わらず、且つノブから伝達されるトルクが所定の値未満である時はノブからナットへトルクを伝達し、伝達されるトルクが所定の値以上になった時は該トルクの伝達を遮断するトルク伝達機構を備えた浴槽用手摺りを提供することを目的とする。 Accordingly, the present invention provides a bathtub hand of a type in which a bolt shaft that supports a pressing plate is screwed back and forth by rotating a nut by a knob in order to safely and reliably attach and remove the handrail for the bathtub to the side wall of the bathtub. When sliding, if the position of the knob with respect to the handrail body for the bathtub does not change even if the bolt shaft is screwed back and forth, and the torque transmitted from the knob is less than a predetermined value, torque is transmitted from the knob to the nut and transmitted. An object of the present invention is to provide a handrail for a bathtub provided with a torque transmission mechanism that interrupts transmission of the torque when the torque to be applied exceeds a predetermined value.
　本発明者等は、上記の目的を達成するため、ノブによりナットを回動することによって、押圧板が支承されたボルト軸を螺進退させるタイプの浴槽用手摺りにおいて、ノブの形状、ナットの形状、トルク伝達機構の取付け位置や取付け構造などについて鋭意検討を重ねた結果、ノブの内部には、本体フレームから突出したボルト軸を収容するための室（空洞）を設け、そしてノブからナットへのトルク伝達経路には、伝達されるトルクが所定の値未満である時はトルクを伝達し、伝達されるトルクが所定の値となった時はトルクの伝達を遮断するトルク伝達機構を設けることにより、本発明を完成するに至った。 In order to achieve the above-mentioned object, the present inventors, in a handrail for a bathtub of the type in which the bolt shaft on which the pressing plate is supported is screwed back and forth by rotating the nut with the knob, As a result of intensive studies on the shape, mounting position of the torque transmission mechanism, mounting structure, etc., the inside of the knob is provided with a chamber (cavity) to accommodate the bolt shaft protruding from the main body frame, and from the knob to the nut In the torque transmission path, a torque transmission mechanism is provided that transmits torque when the transmitted torque is less than a predetermined value, and interrupts torque transmission when the transmitted torque reaches a predetermined value. Thus, the present invention has been completed.
　すなわち、本発明によれば、少なくとも浴槽側壁の側面と略平行に配置される垂直部を備えており、そして浴槽側壁に配置される本体フレームと、本体フレームを浴槽側壁へ固定するために該浴槽側壁を押し付ける押圧板と、そして押圧板を前記本体フレームに対し螺進退させるためのトルク伝達ハンドルとからなる浴槽用手摺りにおいて、トルク伝達ハンドルは、押圧板を支承するボルト軸と、ボルト軸と螺合し且つ本体フレームの垂直部に回転自在に取り付けられるナットと、ナットに対し回動自在に外装されるノブであって、該ノブの内部には、押圧板を最も本体フレームの垂直部へ近づけた時、本体フレームの垂直部の反対側で、該垂直部から外方へ向けて突出したボルト軸を収容するための室が設けられている前記ノブと、そして伝達されるトルクが所定の値未満では、ノブからナットへトルクを伝達し、且つ伝達されるトルクが所定の値以上では、ノブからナットへのトルクの伝達を遮断するトルク伝達機構とを備えていることを特徴とする浴槽用手摺りが提供される。 That is, according to the present invention, at least a vertical portion arranged substantially parallel to the side surface of the bathtub side wall is provided, and the main body frame arranged on the bathtub side wall and the bathtub for fixing the main body frame to the bathtub side wall are provided. In a bathtub handrail comprising a pressing plate for pressing a side wall, and a torque transmission handle for screwing the pressing plate back and forth with respect to the main body frame, the torque transmission handle includes a bolt shaft that supports the pressing plate, a bolt shaft, A nut that is screwed and rotatably attached to a vertical portion of the main body frame, and a knob that is rotatably mounted on the nut. The knob provided with a chamber for accommodating a bolt shaft projecting outward from the vertical portion on the opposite side of the vertical portion of the main body frame, A torque transmission mechanism that transmits torque from the knob to the nut when the transmitted torque is less than a predetermined value, and that interrupts transmission of torque from the knob to the nut when the transmitted torque is equal to or greater than the predetermined value; A handrail for a bathtub is provided.
　本発明のトルク伝達機構は、ノブによりナットを回動することによって押圧板を支承したボルト軸を螺進退させるものであるため、ナットは本体フレームの垂直部に回転自在に取り付けられている。このため、ナットは、回動させても本体フレームの垂直部から軸方向へ移動することがなく、ボルト軸のみが螺進退する。 The torque transmission mechanism of the present invention is such that the bolt shaft that supports the pressing plate is screwed back and forth by rotating the nut with the knob, so that the nut is rotatably attached to the vertical portion of the main body frame. For this reason, even if the nut is rotated, it does not move in the axial direction from the vertical portion of the main body frame, and only the bolt shaft is screwed back and forth.
　ナットを回動するためのノブは、ナットに対し回動自在に外装されており、好ましくは、ナットと同様に本体フレームの垂直部に回転自在に取り付けられる。そしてノブとナットとの間には、後述するトルク伝達機構が配設される。 The knob for rotating the nut is rotatably mounted on the nut, and is preferably attached to the vertical portion of the main body frame so as to be rotatable in the same manner as the nut. A torque transmission mechanism described later is disposed between the knob and the nut.
　また、ノブの内部には、押圧板を最も本体フレームの垂直部へ近づけた時、本体フレームの垂直部の反対側で、該垂直部から外方へ向けて突出したボルト軸を収容するための室が設けられている。このため、本発明の浴槽用手摺りでは、ノブによりナットを回動させても、ボルト軸が本体フレームから外方へ突出して露出することがない。また、ボルト軸を螺進退させても、本体フレームに対するノブの相対位置が変わることもない。さらに、本発明のトルク伝達ハンドルでは、ノブはナットを介してボルト軸の後端部分を覆うように配置されるため、ボルト軸の後端に直列的に配置されている特許文献１に記載されたタイプのトルク伝達ハンドルよりも、ノブが本体フレームから外方へ突出する部分の長さが短く且つコンパクトにできるという利点がある。 Also, inside the knob, when the pressing plate is closest to the vertical part of the main body frame, on the opposite side of the vertical part of the main body frame, a bolt shaft protruding outward from the vertical part is accommodated. A room is provided. For this reason, in the handrail for bathtubs of the present invention, even if the nut is rotated by the knob, the bolt shaft does not protrude outward from the main body frame and is not exposed. Further, even if the bolt shaft is screwed back and forth, the relative position of the knob with respect to the main body frame does not change. Furthermore, in the torque transmission handle according to the present invention, since the knob is arranged so as to cover the rear end portion of the bolt shaft via the nut, it is described in Patent Document 1 arranged in series at the rear end of the bolt shaft. There is an advantage that the length of the portion where the knob protrudes outward from the main body frame is shorter and more compact than the torque transmission handle of the other type.
　このように、本発明によれば、押圧板を螺進退させるボルト軸の露出が防止され、ナットを回動させるノブが本体フレームから外方へ突出する長さが抑制されているので、使用者にとって邪魔であり危険な障害物が排除された安全な浴槽用手摺りを提供することができる。 As described above, according to the present invention, since the bolt shaft that causes the pressing plate to be screwed back and forth is prevented and the length that the knob that rotates the nut protrudes outward from the main body frame is suppressed, the user It is possible to provide a safe handrail for a bathtub from which obstacles that are bothersome and dangerous are eliminated.
　さらに、本発明の浴槽用手摺りは、ノブからナットへトルクを伝達する経路の途中に、伝達されるトルクが所定の値未満では、ノブからナットへトルクを伝達し、且つ伝達されるトルクが所定の値以上では、ノブからナットへのトルクの伝達を遮断するトルク伝達機構が設けられている。 Furthermore, the handrail for bathtubs according to the present invention transmits torque from the knob to the nut and transmits the torque when the torque to be transmitted is less than a predetermined value in the course of the torque transmission from the knob to the nut. Above a predetermined value, a torque transmission mechanism is provided that interrupts transmission of torque from the knob to the nut.
　このため、本発明の浴槽用手摺りでは、ノブを回転することにより押圧板を螺進退させて浴槽の側壁へ押し付けても、ノブからナットへ伝達されるトルクが所定の値以上に到達した時、換言すれば、浴槽の側壁に対する押圧板の押付け力（又は締付け力）が所定の値以上に到達した時は、ノブからナットへのトルクの伝達が遮断される。その結果、押圧板は、所定の押付け力で浴槽の側壁を確実にグリップすることができ、そして押圧板の押付け力が強過ぎることによって浴槽の側壁を破壊することも防止される。 For this reason, in the handrail for bathtubs of the present invention, even when the pressing plate is screwed back and forth by rotating the knob and pressed against the side wall of the bathtub, the torque transmitted from the knob to the nut reaches a predetermined value or more. In other words, when the pressing force (or tightening force) of the pressing plate against the side wall of the bathtub reaches a predetermined value or more, the transmission of torque from the knob to the nut is interrupted. As a result, the pressing plate can securely grip the side wall of the bathtub with a predetermined pressing force, and it is also possible to prevent the side wall of the bathtub from being destroyed due to the pressing force of the pressing plate being too strong.
　本発明によれば、略円筒形の形状を有するナットへの適用に適しており、ノブからナットへトルクを確実に伝達または遮断することができるトルク伝達機構が提供される。 According to the present invention, there is provided a torque transmission mechanism that is suitable for application to a nut having a substantially cylindrical shape and can reliably transmit or block torque from the knob to the nut.
　第１の態様のトルク伝達機構は、ノブの回転軸に対して直交する略円形のトルク伝達面を備えており、そしてノブの回転と同調し且つノブの回転軸に沿ってスライド可能に内装される環状部材と、トルク伝達面に当接し且つナットの回転軸に対して直交する略円形のトルク伝受面を備えたナットと、環状部材のトルク伝達面をナットのトルク伝受面へ向けて付勢する弾性体とからなり、そしてトルク伝達面およびトルク伝受面は、それぞれに伝達されるトルクが所定の値未満では、トルク伝達面とトルク伝受面とを相互に係止し、且つ伝達されるトルクが所定の値以上では、トルク伝達面とトルク伝受面との間で滑りを生じさせる傾斜面を備えた凹部または凸部を含んでいることを特徴とするものである。 The torque transmission mechanism of the first aspect includes a substantially circular torque transmission surface orthogonal to the rotation axis of the knob, and is slidably mounted along the rotation axis of the knob in synchronization with the rotation of the knob. An annular member, a nut having a substantially circular torque transmission surface that is in contact with the torque transmission surface and orthogonal to the rotation axis of the nut, and the torque transmission surface of the annular member faces the torque transmission surface of the nut. The torque transmitting surface and the torque transmitting surface are engaged with each other when the torque transmitted to each is less than a predetermined value, and the torque transmitting surface and the torque transmitting surface are mutually locked. When the transmitted torque is equal to or greater than a predetermined value, it includes a concave portion or a convex portion having an inclined surface that causes slippage between the torque transmission surface and the torque transmission surface.
　第１の態様のトルク伝達機構では、トルク伝達面の中心およびトルク伝受面の中心は、共通するノブおよびナットの回転軸上に配置されている。また、トルク伝達面上およびトルク伝受面上には、それぞれにトルク伝達面またはトルク伝受面から傾斜した斜面を含む凹部／凸部が形成されている。トルク伝達面の傾斜面およびトルク伝受面の傾斜面は、押圧板が浴槽の側壁へ向かって前進するようにノブを回す時、互いに対向する相手側の傾斜面を昇るように勾配が付けられている。そしてトルク伝達面を有する環状部材は、ノブの内周面とナットの外周面との間でノブの回転軸に沿ってスライド可能に装着されており、且つ弾性体によってトルク伝受面に向けて付勢されている。なお、弾性体は、コイルバネ、皿バネ、弾性樹脂材料など弾性変形可能なものであれば特に限定されることなく公知のものを使用することができる。 In the torque transmission mechanism of the first aspect, the center of the torque transmission surface and the center of the torque transmission surface are arranged on the common knob and nut rotation shaft. Further, on the torque transmission surface and the torque transmission surface, a concave / convex portion including a torque transmission surface or a slope inclined from the torque transmission surface is formed. The inclined surface of the torque transmitting surface and the inclined surface of the torque transmitting surface are sloped so that the opposing inclined surface facing each other rises when the knob is turned so that the pressing plate moves forward toward the side wall of the bathtub. ing. The annular member having the torque transmission surface is slidably mounted along the rotation axis of the knob between the inner peripheral surface of the knob and the outer peripheral surface of the nut, and is directed toward the torque transmission surface by an elastic body. It is energized. The elastic body is not particularly limited as long as it is elastically deformable, such as a coil spring, a disc spring, or an elastic resin material, and a known one can be used.
　このため、トルク伝達面の傾斜面とトルク伝受面の傾斜面との間には常に一定の摩擦力が生じている。そして、ノブからナットへ伝達されるトルクが所定の値未満である時、トルク伝達面の傾斜面はトルク伝受面の傾斜面を乗り越えることができず、互いに噛み合った状態で係合している。そして、この係合によりノブのトルクがナットへ伝達され、該ナットと螺合しているボルト軸が螺進退される。 Therefore, a constant frictional force is always generated between the inclined surface of the torque transmission surface and the inclined surface of the torque transmission surface. When the torque transmitted from the knob to the nut is less than a predetermined value, the inclined surface of the torque transmitting surface cannot get over the inclined surface of the torque transmitting surface and is engaged with each other while being engaged with each other. . Then, the torque of the knob is transmitted to the nut by this engagement, and the bolt shaft screwed with the nut is screwed back and forth.
　一方、ノブからナットへ伝達されるトルクが所定の値以上になると、トルク伝達面の傾斜面はトルク伝受面の傾斜面との間に滑りが生じる。その結果、トルク伝達面を有する環状部材は弾性体に抗して後退し、トルク伝達面の傾斜面がトルク伝受面の傾斜面を乗り越えることによって両者の係合が解除される。そのため、この状態でノブを回してもノブはナットの周りで空回りするのみであり、ノブからナットへトルクが伝達されることはない。 On the other hand, when the torque transmitted from the knob to the nut exceeds a predetermined value, the inclined surface of the torque transmitting surface slips between the inclined surface of the torque transmitting surface. As a result, the annular member having the torque transmission surface is retracted against the elastic body, and the engagement between the two is released by the inclined surface of the torque transmission surface getting over the inclined surface of the torque transmission surface. Therefore, even if the knob is turned in this state, the knob only idles around the nut, and torque is not transmitted from the knob to the nut.
　また、トルク伝達面の傾斜面の後端にはトルク伝達面に略直交する垂直面が形成されており、トルク伝受面の傾斜面の後端にはトルク伝受面に略直交する垂直面が形成されている。トルク伝達面の垂直面とトルク伝受面の垂直面は、押圧板が浴槽の側壁から後退するようにノブを回した時、互いに当接し係合する。そのため、押圧板が浴槽の側壁から後退するようにノブを回す時は、伝達されるトルクの大きさに拠らず、常にノブとナットは同調して回転する。 In addition, a vertical surface that is substantially orthogonal to the torque transmission surface is formed at the rear end of the inclined surface of the torque transmission surface, and a vertical surface that is substantially orthogonal to the torque transmission surface at the rear end of the inclined surface of the torque transmission surface. Is formed. The vertical surface of the torque transmission surface and the vertical surface of the torque transmission surface are brought into contact with each other when the knob is turned so that the pressing plate moves backward from the side wall of the bathtub. Therefore, when turning the knob so that the pressing plate moves backward from the side wall of the bathtub, the knob and the nut always rotate in synchronism regardless of the magnitude of the transmitted torque.
　このように、第１の態様のトルク伝達機構は、ナットの回転軸に対して直交するナットの端面をトルク伝受面として利用するものであるが、例えば、該ナットの端面の面積が狭い場合であっても、ノブからナットへのトルクを確実に伝受または遮断することができる。なぜなら、第１の態様のトルク伝達機構では、ナットに設けられるトルク伝受面を、ナットの外周面に設けられた段差（外径差）に形成したことにより、本来のナットの端面よりより一層大きな面積を有する第２の端部（トルク伝受面）をナットの外周面に設けることができたからである。なお、ナットの端部の肉厚（外形寸法）を増大させてナットの端面の面積を広くし、トルク伝受面をナットの外周面ではなくナットの本来の端面であるナットの側端面に設けることで、ノブからナットへのトルクを伝受または遮断することもできる。 As described above, the torque transmission mechanism according to the first aspect uses the end face of the nut orthogonal to the rotation axis of the nut as the torque transmission face. For example, when the area of the end face of the nut is small Even so, the torque from the knob to the nut can be reliably transmitted or cut off. This is because, in the torque transmission mechanism of the first aspect, the torque transmission surface provided on the nut is formed as a step (outer diameter difference) provided on the outer peripheral surface of the nut, so that it is much more than the end face of the original nut. This is because the second end portion (torque transmission surface) having a large area can be provided on the outer peripheral surface of the nut. In addition, the thickness (external dimension) of the end of the nut is increased to increase the area of the end surface of the nut, and the torque transmission surface is provided not on the outer peripheral surface of the nut but on the side end surface of the nut, which is the original end surface of the nut. Thus, torque from the knob to the nut can be transmitted or cut off.
　トルク伝受面は、ナットへ着脱自在に装着できる第２の環状部材上に形成してもよい。特にトルク伝受面の凹部または凸部は、長期間使用した時に磨耗することがあるので、ナット本体とは別体の第２の環状部材上にトルク伝受面を形成しておくと、トルク伝受面が磨耗した時に第２の環状部材を容易に交換することが可能となり便利である。 The torque transmission surface may be formed on a second annular member that can be detachably attached to the nut. In particular, the concave portion or the convex portion of the torque transmission surface may be worn when used for a long period of time. Therefore, if the torque transmission surface is formed on the second annular member separate from the nut body, the torque transmission surface The second annular member can be easily replaced when the transmission surface is worn, which is convenient.
　また、ナット本体とは別体の第２の環状部材上にトルク伝受面を形成しておくと、本体フレームの垂直部へのナットの取り付けが容易となる。具体的には、ナットを、本体フレームの垂直部に設けられた貫通口へ挿通される胴部と、該貫通口より大きく且つ胴部から放射方向に延びたフランジとから構成する。そしてナットの胴部を貫通口へ挿通し、フランジが本体フレームの垂直部へ当接する側の反対側から、貫通口より大きな外径を有する第２の環状部材をナットへ固定することにより、ナットを本体フレームの垂直部へ容易且つ回転自在に取り付けることができるようになる。 Also, if the torque transmission surface is formed on the second annular member separate from the nut body, the nut can be easily attached to the vertical portion of the body frame. Specifically, the nut is constituted by a trunk portion that is inserted into a through hole provided in a vertical portion of the main body frame, and a flange that is larger than the through hole and extends in a radial direction from the trunk portion. Then, the nut is inserted into the through hole, and the second annular member having an outer diameter larger than that of the through hole is fixed to the nut from the side opposite to the side where the flange contacts the vertical part of the main body frame. Can be easily and rotatably attached to the vertical portion of the main body frame.
　さらに、樹脂製のワッシャーを介して、本体フレームの垂直部をナットのフランジおよび第２の環状部材によって挟み込むとガタ付きが減少し、本体フレームの垂直部に対するナットの回転をより一層円滑にすることができる。 Further, when the vertical part of the main body frame is sandwiched between the nut flange and the second annular member via the resin washer, the backlash is reduced, and the rotation of the nut with respect to the vertical part of the main body frame is made smoother. Can do.
　第１の態様のトルク伝達機構は、トルク伝達面が形成された環状部材と、トルク伝受面が形成されたナットの配列を軸方向に入れ換え、且つ弾性体の位置も変更することにより、環状部材のトルク伝達面が、第１の態様のトルク伝達面とは反対向きにナットのトルク伝受面を付勢するように小変更した、第２の態様のトルク伝達機構として構成することもできる。この場合、第２の態様のトルク伝達機構は、ノブと同調する環状部材のトルク伝達面がナットのトルク伝受面を付勢することに変わりがないので、上述した第１の態様のトルク伝達機構と同じ機構によって機能し、同じ作用効果を奏することができる。 The torque transmission mechanism according to the first aspect includes an annular member in which the torque transmission surface is formed and a nut in which the torque transmission surface is formed in the axial direction, and the position of the elastic body is also changed. The torque transmission surface of the member can also be configured as a torque transmission mechanism of the second mode that is slightly changed so as to bias the torque transmission surface of the nut in the direction opposite to the torque transmission surface of the first mode. . In this case, in the torque transmission mechanism of the second aspect, the torque transmission surface of the annular member synchronized with the knob does not change the bias of the torque transmission surface of the nut. It functions by the same mechanism as the mechanism, and has the same effect.
　次に、本発明により提供される第３の態様のトルク伝達機構について説明する。第３の態様のトルク伝達機構は、第１の態様のトルク伝達機構において、環状部材のトルク伝達面が弾性体によってナットのトルク伝受面を付勢していたものを、トルク伝達面とトルク伝受面の配列を軸方向に入れ換えることにより、ナットと同調する環状部材に形成されたトルク伝受面が、弾性体によってノブのトルク伝達面を付勢するように変更したものである Next, a torque transmission mechanism according to a third aspect provided by the present invention will be described. The torque transmission mechanism of the third aspect is the same as the torque transmission mechanism of the first aspect except that the torque transmission surface of the annular member urges the torque transmission surface of the nut by the elastic body. By changing the arrangement of the transmission surfaces in the axial direction, the torque transmission surface formed on the annular member that synchronizes with the nut is changed so that the torque transmission surface of the knob is urged by the elastic body.
　具体的には、第３の態様のトルク伝達機構は、ノブの回転軸に対して直交する略円形のトルク伝達面を有するノブと、トルク伝達面に当接し且つナットの回転軸に対して直交する略円形のトルク伝受面を備えており、そしてナットの回転と同調し且つナットの回転軸に沿ってスライド可能に外装される環状部材と、環状部材のトルク伝受面をノブのトルク伝達面へ向けて付勢する弾性体とからなり、そしてトルク伝達面およびトルク伝受面は、それぞれに伝達されるトルクが所定の値未満では、トルク伝達面とトルク伝受面とを相互に係止し、且つ伝達されるトルクが所定の値以上では、トルク伝達面とトルク伝受面との間で滑りを生じさせる傾斜面を備えた凹部または凸部を含んでいることを特徴とするものである。 Specifically, the torque transmission mechanism according to the third aspect includes a knob having a substantially circular torque transmission surface orthogonal to the rotation axis of the knob, and a contact with the torque transmission surface and orthogonal to the rotation axis of the nut. An annular member which is provided with a substantially circular torque transmission surface and which is externally slidable along the rotation axis of the nut and is slidable along the rotation axis of the nut; The torque transmission surface and the torque transmission surface are mutually related when the torque transmitted to each of them is less than a predetermined value. It includes a concave portion or a convex portion having an inclined surface that causes slippage between the torque transmission surface and the torque transmission surface when the torque to be stopped and the transmitted torque is equal to or greater than a predetermined value. It is.
　第３の態様のトルク伝達機構では、トルク伝達面の中心およびトルク伝受面の中心は、共通するノブおよびナットの回転軸上に配置されている。また、トルク伝達面上およびトルク伝受面上には、それぞれにトルク伝達面またはトルク伝受面から傾斜した斜面を含む凹部／凸部が形成されている。トルク伝達面の傾斜面およびトルク伝受面の傾斜面は、押圧板が浴槽の側壁へ向かって前進するようにノブを回す時、互いに対向する相手側の傾斜面を昇るように勾配が付けられている。そしてトルク伝受面を有する環状部材は、ノブの内周面とナット外周面の間でナットの回転軸に沿ってスライド可能に装着されており、且つ弾性体によってトルク伝達面に向けて付勢されている。なお、弾性体は、コイルバネ、皿バネ、弾性樹脂材料など弾性変形可能なものであれば特に限定されることなく公知のものを使用することができる。 In the torque transmission mechanism of the third aspect, the center of the torque transmission surface and the center of the torque transmission surface are arranged on a common knob and nut rotation shaft. Further, on the torque transmission surface and the torque transmission surface, a concave / convex portion including a torque transmission surface or a slope inclined from the torque transmission surface is formed. The inclined surface of the torque transmitting surface and the inclined surface of the torque transmitting surface are sloped so that the opposing inclined surface facing each other rises when the knob is turned so that the pressing plate moves forward toward the side wall of the bathtub. ing. The annular member having the torque transmission surface is slidably mounted along the rotation axis of the nut between the inner peripheral surface of the knob and the outer peripheral surface of the nut, and is biased toward the torque transmission surface by the elastic body. Has been. The elastic body is not particularly limited as long as it is elastically deformable, such as a coil spring, a disc spring, or an elastic resin material, and a known one can be used.
　このため、トルク伝達面の傾斜面とトルク伝受面の傾斜面との間には常に一定の摩擦力が生じている。そして、ノブからナットへ伝達されるトルクが所定の値未満である時、トルク伝受面の傾斜面はトルク伝達面の傾斜面を乗り越えることができず、互いに噛み合った状態で係合している。そして、この係合によりノブのトルクがナットへ伝達され、該ナットと螺合しているボルト軸が螺進退される。 Therefore, a constant frictional force is always generated between the inclined surface of the torque transmission surface and the inclined surface of the torque transmission surface. When the torque transmitted from the knob to the nut is less than a predetermined value, the inclined surface of the torque transmitting surface cannot get over the inclined surface of the torque transmitting surface and is engaged with each other while being engaged with each other. . Then, the torque of the knob is transmitted to the nut by this engagement, and the bolt shaft screwed with the nut is screwed back and forth.
　一方、ノブからナットへ伝達されるトルクが所定の値以上になると、トルク伝受面の傾斜面はトルク伝達面の傾斜面との間に滑りが生じる。その結果、トルク伝受面を有する環状部材は弾性体に抗して後退し、トルク伝受面の傾斜面がトルク伝達面の傾斜面を乗り越えることによって両者の係合が解除される。そのため、この状態でノブを回してもノブはナットの周りで空回りするのみであり、ノブからナットへトルクが伝達されることはない。 On the other hand, when the torque transmitted from the knob to the nut exceeds a predetermined value, the inclined surface of the torque transmitting surface slips between the inclined surface of the torque transmitting surface. As a result, the annular member having the torque transmission surface is retracted against the elastic body, and the engagement between the two is released when the inclined surface of the torque transmission surface gets over the inclined surface of the torque transmission surface. Therefore, even if the knob is turned in this state, the knob only idles around the nut, and torque is not transmitted from the knob to the nut.
　また、トルク伝達面の傾斜面の後端にはトルク伝達面に略直交する垂直面が形成されており、トルク伝受面の傾斜面の後端にはトルク伝受面に略直交する垂直面が形成されている。トルク伝達面の垂直面とトルク伝受面の垂直面は、押圧板が浴槽の側壁から後退するようにノブを回した時、互いに当接し係合する。そのため、押圧板が浴槽の側壁から後退するようにノブを回す時は、伝達されるトルクの大きさに拠らず、常にノブとナットは同調して回転する。 In addition, a vertical surface that is substantially orthogonal to the torque transmission surface is formed at the rear end of the inclined surface of the torque transmission surface, and a vertical surface that is substantially orthogonal to the torque transmission surface at the rear end of the inclined surface of the torque transmission surface. Is formed. The vertical surface of the torque transmission surface and the vertical surface of the torque transmission surface are brought into contact with each other when the knob is turned so that the pressing plate moves backward from the side wall of the bathtub. Therefore, when turning the knob so that the pressing plate moves backward from the side wall of the bathtub, the knob and the nut always rotate in synchronism regardless of the magnitude of the transmitted torque.
　このように、第３の態様のトルク伝達機構は、ナットの回転軸に対して直交するナットの端面をトルク伝受面として利用するものであるが、例えば、該ナットの端面の面積が狭い場合であっても、ノブからナットへトルクを確実に伝受または遮断することができる。なぜなら、第３の態様のトルク伝達機構では、ナットに設けられるトルク伝受面を、ナットの外周面にスライド可能に配設された環状部材に形成したことにより、本来のナットの端面よりより一層大きな面積を有する第２の端部（トルク伝受面）をナットの外周面に設けることができたからである。 As described above, the torque transmission mechanism of the third aspect uses the end face of the nut orthogonal to the rotation axis of the nut as the torque transmission face. For example, when the area of the end face of the nut is small Even so, torque can be reliably transmitted or cut off from the knob to the nut. This is because, in the torque transmission mechanism of the third aspect, the torque transmission surface provided on the nut is formed as an annular member that is slidably disposed on the outer peripheral surface of the nut, so that the end surface of the original nut is further increased. This is because the second end portion (torque transmission surface) having a large area can be provided on the outer peripheral surface of the nut.
　トルク伝達面は、ノブへ着脱自在に装着できる第３の環状部材上に形成してもよい。特にトルク伝達面の凹部または凸部は、長期間使用した時に磨耗することがあるので、ノブ本体とは別体の第３の環状部材上にトルク伝達面を形成しておくと、トルク伝達面が磨耗した時に第３の環状部材を容易に交換することが可能となり便利である。 The torque transmission surface may be formed on a third annular member that can be detachably attached to the knob. In particular, the concave portion or the convex portion of the torque transmission surface may be worn when used for a long period of time. Therefore, if the torque transmission surface is formed on the third annular member separate from the knob body, the torque transmission surface It is convenient that the third annular member can be easily replaced when the wears out.
　また、第１および第３の態様のトルク制御機構では、環状部材を付勢する側とは反対側の弾性体の端部を固定するためのストッパーをナットに設けることにより、トルク伝達機構をコンパクトにすることができる。また、ストッパーをナットへ着脱自在に装着することにより、弾性体の弾性力の調整や交換を容易化することができ、第１および第３の態様のトルク制御機構のメンテナンス性が向上する。 In the torque control mechanisms of the first and third aspects, the torque transmission mechanism can be made compact by providing a stopper on the nut for fixing the end of the elastic body opposite to the side that biases the annular member. Can be. Further, by detachably attaching the stopper to the nut, the adjustment and replacement of the elastic force of the elastic body can be facilitated, and the maintainability of the torque control mechanisms of the first and third aspects is improved.
　さらに、本発明により提供される第４の態様のトルク伝達機構について説明する。第４の態様のトルク伝達機構は、トルク伝達面およびトルク伝受面がノブおよびナットの回転軸に対して直交するように配置された第１～第３の態様のトルク伝達機構とは大きく異なる。第４の態様のトルク伝達機構では、トルク伝達面はノブの内周面上に設けられ（以下、「トルク伝達内周面」という）、トルク伝受面はナットの外周面上に設けられる（以下、「トルク伝受外周面」という）。また、第４の態様のトルク伝達機構では、第１～第３の態様のトルク伝達機構の環状部材は、ナットの外周面上に形成されたキー溝の中に、ナットの回転軸に対して放射方向に移動可能なキーとして置換されている。 Furthermore, a torque transmission mechanism according to a fourth aspect provided by the present invention will be described. The torque transmission mechanism of the fourth aspect is greatly different from the torque transmission mechanisms of the first to third aspects in which the torque transmission surface and the torque transmission surface are arranged so as to be orthogonal to the rotation axes of the knob and the nut. . In the torque transmission mechanism of the fourth aspect, the torque transmission surface is provided on the inner peripheral surface of the knob (hereinafter referred to as “torque transmission inner peripheral surface”), and the torque transmission surface is provided on the outer peripheral surface of the nut ( Hereinafter referred to as “torque transmission outer peripheral surface”). In the torque transmission mechanism according to the fourth aspect, the annular member of the torque transmission mechanism according to the first to third aspects is located in the key groove formed on the outer peripheral surface of the nut with respect to the rotation shaft of the nut. Replaced as a key that can be moved radially.
　具体的には、第４の態様のトルク伝達機構は、ノブの回転軸に対して平行な略円筒形のトルク伝達内周面を有するノブと、トルク伝達内周面に摺接し且つナットの回転軸に対して平行に配設される略円筒形の外周面と、外周面上であってナットの回転軸に対して平行に配設されたキー溝と、トルク伝達内周面に当接するトルク伝受外周面を備えており且つナットの回転軸に対して放射方向に移動可能にキー溝の中に配置されたキーと、そしてキーのトルク伝受外周面をノブのトルク伝達内周面へ向けて付勢する弾性体とからなり、そしてトルク伝達内周面およびキーのトルク伝受外周面は、それぞれに伝達されるトルクが所定の値未満では、トルク伝達内周面とトルク伝受外周面とを相互に係止し、且つ伝達されるトルクが所定の値以上では、トルク伝達内周面とトルク伝受外周面との間で滑りを生じさせる傾斜面を備えた凹部または凸部を含んでいることを特徴とするものである。 Specifically, the torque transmission mechanism according to the fourth aspect includes a knob having a substantially cylindrical torque transmission inner peripheral surface parallel to the rotation axis of the knob, and a sliding contact with the torque transmission inner peripheral surface and rotation of the nut. A substantially cylindrical outer peripheral surface disposed parallel to the shaft, a key groove disposed on the outer peripheral surface and parallel to the rotation shaft of the nut, and a torque that contacts the inner peripheral surface of the torque transmission A key having a transmission outer peripheral surface and arranged in a key groove so as to be movable in a radial direction with respect to the rotation axis of the nut, and the torque transmission outer peripheral surface of the key to the torque transmission inner peripheral surface of the knob And the torque transmission inner circumferential surface and the torque transmission outer circumferential surface of the key are arranged so that the torque transmission inner circumferential surface and the torque transmission outer circumferential surface are less than a predetermined value. And the torque to be transmitted is above a predetermined value. , And it is characterized in that it includes recesses or protrusions with an inclined surface to cause slippage between the torque transmission in the circumferential surface and the torque Den 受外 circumference.
　第４の態様のトルク伝達機構では、トルク伝達内周面の回転軸およびトルク伝受外周面の回転軸は、共通するノブおよびナットの回転軸上に配置されている。また、ノブのトルク伝達内周面上には、円筒状のトルク伝達内周面からさらに内側に傾斜した斜面を含む凹部／凸部が形成されている。一方、ナットのトルク伝受外周面上には、ナットの回転軸に対して平行に配設されたキー溝が形成されており、そしてキー溝の中には、ナットの回転軸に対して放射方向に移動可能なキーが配置されている。キーのトルク伝受外周面上には傾斜面を含む凹部／凸部が形成されており、キーは弾性体によってトルク伝達内周面に向けて付勢されている。なお、弾性体は、コイルバネ、皿バネ、弾性樹脂材料など弾性変形可能なものであれば特に限定されることなく公知のものを使用することができる。 In the torque transmission mechanism of the fourth aspect, the rotation shaft of the torque transmission inner peripheral surface and the rotation shaft of the torque transmission outer peripheral surface are disposed on the common knob and nut rotation shafts. Further, a concave / convex portion including a slope inclined further inward from the cylindrical torque transmission inner peripheral surface is formed on the torque transmission inner peripheral surface of the knob. On the other hand, a key groove disposed in parallel with the nut rotation shaft is formed on the nut torque transmission outer peripheral surface, and the key groove radiates with respect to the nut rotation shaft. There are keys that can be moved in the direction. A concave / convex portion including an inclined surface is formed on the torque transmission outer peripheral surface of the key, and the key is urged toward the torque transmission inner peripheral surface by an elastic body. The elastic body is not particularly limited as long as it is elastically deformable, such as a coil spring, a disc spring, or an elastic resin material, and a known one can be used.
　このため、トルク伝達内周面の傾斜面と、キーのトルク伝受外周面の傾斜面との間には常に一定の摩擦力が生じている。そして、ノブからナットへ伝達されるトルクが所定の値未満である時、キーのトルク伝受外周面の傾斜面はノブのトルク伝達内周面の傾斜面を乗り越えることができず、互いに噛み合った状態で係合している。そして、この係合によりノブのトルクがナットへ伝達され、該ナットと螺合しているボルト軸が螺進退される。 Therefore, a constant frictional force is always generated between the inclined surface of the torque transmission inner peripheral surface and the inclined surface of the torque transmission outer peripheral surface of the key. When the torque transmitted from the knob to the nut is less than a predetermined value, the inclined surface of the key torque transmission outer peripheral surface cannot get over the inclined surface of the torque transmission inner peripheral surface of the knob, and meshes with each other. Engaged in a state. Then, the torque of the knob is transmitted to the nut by this engagement, and the bolt shaft screwed with the nut is screwed back and forth.
　一方、ノブからナットへ伝達されるトルクが所定の値以上になると、ナットのトルク伝受外周面の傾斜面はノブのトルク伝達内周面の傾斜面との間に滑りが生じる。その結果、傾斜面を有するキーは弾性体に抗して後退し、キーのトルク伝受外周面の傾斜面がノブのトルク伝達内周面の傾斜面を乗り越えることによって両者の係合が解除される。そのため、この状態でノブを回してもノブはナットの周りで空回りするのみであり、ノブからナットへトルクが伝達されることはない。 On the other hand, when the torque transmitted from the knob to the nut exceeds a predetermined value, the inclined surface of the nut torque transmission outer peripheral surface slips between the inclined surface of the knob torque transmission inner peripheral surface. As a result, the key having the inclined surface retreats against the elastic body, and the engagement between the two is released by the inclined surface of the torque transmission outer peripheral surface of the key getting over the inclined surface of the torque transmission inner peripheral surface of the knob. The Therefore, even if the knob is turned in this state, the knob only idles around the nut, and torque is not transmitted from the knob to the nut.
　また、ノブのトルク伝達内周面の傾斜面の後端にはトルク伝達内周面に略直交する垂直面が形成されている。また、キーの幅方向の断面は略台形の形状を呈しているので、キーのトルク伝受外周面の傾斜面の後端にはキーの傾斜面に略直交する垂直面が形成されている。ノブのトルク伝達内周面の垂直面とキーのトルク伝受外周面の垂直面は、押圧板が浴槽の側壁から後退するようにノブを回した時、互いに当接し係合する。そのため、押圧板が浴槽の側壁から後退するようにノブを回す時は、伝達されるトルクの大きさに拠らず、常にノブとナットは同調して回転する。 Further, a vertical surface substantially orthogonal to the torque transmission inner peripheral surface is formed at the rear end of the inclined surface of the torque transmission inner peripheral surface of the knob. Further, since the cross section in the width direction of the key has a substantially trapezoidal shape, a vertical surface substantially orthogonal to the inclined surface of the key is formed at the rear end of the inclined surface of the torque transmission outer peripheral surface of the key. When the knob is turned so that the pressing plate moves backward from the side wall of the bathtub, the vertical surface of the knob torque transmission inner peripheral surface and the key torque transmission outer peripheral surface of the key abut and engage with each other. Therefore, when turning the knob so that the pressing plate moves backward from the side wall of the bathtub, the knob and the nut always rotate in synchronism regardless of the magnitude of the transmitted torque.
　このように、第４の態様のトルク伝達機構はナットの端面ではなく、ナットの回転軸に対して平行に配設される略円筒形の外周面をトルク伝受外周面として利用するものであるが、該ナットの外周面の形状が曲面であっても、ナットの外部領域がノブによって囲まれて狭小であっても、ノブからナットへのトルクを確実に伝受または遮断することができる。なぜなら、第４の態様のトルク伝達機構では、ナットから独立したキーの外周面上に傾斜面を形成し、該キーをナットの外周面上に設けたキー溝の中に配置したので、ノブの内周面とナットの外周面が近接している場合においても、ナットの回転軸に対し放射方向に移動して係合／解除可能な傾斜面をナットの外周面に設けることができたからである。 As described above, the torque transmission mechanism according to the fourth aspect uses not the end face of the nut but the substantially cylindrical outer peripheral face arranged in parallel to the rotation shaft of the nut as the torque transmission outer peripheral face. However, even if the shape of the outer peripheral surface of the nut is a curved surface or the outer region of the nut is surrounded and narrowed by the knob, torque from the knob to the nut can be reliably transmitted or cut off. Because, in the torque transmission mechanism of the fourth aspect, the inclined surface is formed on the outer peripheral surface of the key independent from the nut, and the key is disposed in the key groove provided on the outer peripheral surface of the nut. This is because even when the inner peripheral surface and the outer peripheral surface of the nut are close to each other, the outer peripheral surface of the nut can be provided with an inclined surface that can be engaged and released by moving in the radial direction with respect to the rotation axis of the nut. .
　トルク伝達内周面は、ノブの内周面へ着脱自在に嵌合される筒状部材上に形成してもよい。特にトルク伝達内周面の凹部または凸部は、長期間使用した時に磨耗することがあるので、ノブ本体とは別体の筒状部材上にトルク伝達内周面を形成しておくと、トルク伝達内周面が磨耗した時に筒状部材を容易に交換することが可能となり便利である。またノブ本体を、耐摩耗性を考慮した筒状部材とは無関係な軽量プラスチック材料などから作ることもできるという利点もある。 The torque transmission inner peripheral surface may be formed on a cylindrical member that is detachably fitted to the inner peripheral surface of the knob. In particular, the concave or convex portions on the inner peripheral surface of the torque transmission may wear when used for a long period of time, so if the inner peripheral surface of the torque transmission is formed on a cylindrical member separate from the knob body, It is convenient because the cylindrical member can be easily replaced when the transmission inner peripheral surface is worn. Further, there is an advantage that the knob body can be made of a lightweight plastic material that is unrelated to the cylindrical member considering wear resistance.
　また、第１～第４の態様のトルク伝達機構では、ナットに、本体フレームの垂直部に設けられた貫通口へ挿通される胴部と、貫通口より大きな外径を有し且つ胴部から放射方向に延びたフランジを設けてもよい。この場合、胴部を前記貫通口へ挿通し、フランジが本体フレームの垂直部へ当接する側の反対側から、貫通口の直径より大きな外径を有する固定リングをナットへ固定することにより、ナットを本体フレームの垂直部へ容易且つ回転自在に取り付けることができるようになる。 In the torque transmission mechanisms of the first to fourth aspects, the nut is inserted into the through-hole provided in the vertical portion of the main body frame, the outer diameter is larger than the through-hole, and the nut from the trunk A flange extending in the radial direction may be provided. In this case, the nut is inserted into the through hole, and a fixing ring having an outer diameter larger than the diameter of the through hole is fixed to the nut from the side opposite to the side where the flange contacts the vertical portion of the main body frame. Can be easily and rotatably attached to the vertical part of the main body frame.
　さらに、樹脂製のワッシャーを介して、本体フレームの垂直部をナットのフランジおよび固定リングによって挟み込むとガタ付きが減少し、本体フレームの垂直部に対するナットの回転をより一層円滑にすることができる。 Furthermore, when the vertical part of the main body frame is sandwiched between the nut flange and the fixing ring via the resin washer, the backlash is reduced, and the rotation of the nut relative to the vertical part of the main body frame can be made smoother.
　第１、第２および第３のトルク伝達機構では、ナットまたはナットに固定された部品に係合孔を設け、そしてノブには、該係合孔と連通することができる貫通孔を設けることが好ましい。 In the first, second, and third torque transmission mechanisms, the nut or a part fixed to the nut is provided with an engagement hole, and the knob is provided with a through hole that can communicate with the engagement hole. preferable.
　本発明により提供されるトルク伝達機構は、押圧板が浴槽の側壁から後退するようにノブを回す時は、伝達されるトルクの大きさに拠らず、常にノブとナットは同調して回転するように設計されている。このため、使用者が不注意等で、押圧板が本体フレームの垂直部と当接した後もノブを過剰に回してしまうと、ナットと軸方向に引張り応力が生じたボルト軸との間で大きな摩擦力を生じることがある。ところが、本発明のトルク伝達機構では、伝達されるトルクが所定の値以上となるとトルクの伝達が遮断されるので、前記摩擦力が過大であると、ノブを回してもノブはナットの周りで空回りするのみで、押圧板を支承したボルト軸を前進させることができなくなる場合がある。 According to the torque transmission mechanism provided by the present invention, when the knob is turned so that the pressing plate is retracted from the side wall of the bathtub, the knob and the nut always rotate in synchronization without depending on the magnitude of the transmitted torque. Designed to be For this reason, if the user rotates the knob excessively even after the pressing plate has come into contact with the vertical part of the main body frame due to carelessness, etc., between the nut and the bolt shaft that has caused tensile stress in the axial direction. May cause large frictional force. However, in the torque transmission mechanism of the present invention, torque transmission is interrupted when the transmitted torque exceeds a predetermined value. Therefore, if the frictional force is excessive, the knob will not rotate around the nut even if the knob is turned. There is a case where the bolt shaft supporting the pressing plate cannot be advanced only by idling.
　そのため、第１、第２および第３のトルク伝達機構では、ナットまたはナットに固定された部品に係合孔を設け、そしてノブには、該係合孔と連通することができる貫通孔を設けることにより、押圧板を前進させることができなくなった時、ノブの貫通孔からナットまたはナットに固定された部品の係合孔へ連結ピンなどの棒状部品を差し込んで一時的にノブとナットを連結できるようにし、ノブとナットの同調を保証することによって上記の問題を解決している。 Therefore, in the first, second, and third torque transmission mechanisms, an engagement hole is provided in the nut or a part fixed to the nut, and a through hole that can communicate with the engagement hole is provided in the knob. Therefore, when the pressing plate cannot be moved forward, a rod-shaped part such as a connecting pin is inserted from the through hole of the knob to the engaging hole of the part fixed to the nut, and the knob and the nut are temporarily connected. It solves the above problem by making it possible to ensure the tuning of the knob and nut.
　本発明によれば、ノブの内部には、押圧板を最も本体フレームの垂直部へ近づけた時、本体フレームの垂直部の反対側で、該垂直部から外方へ向けて突出したボルト軸を収容するための室が設けられている。このため、本発明の浴槽用手摺りでは、ノブによりナットを回動しても、ボルト軸が本体フレームから外方へ突出して露出することがなく、本体フレームに対するノブの位置が変わることもない。その結果、押圧板を螺進退させるボルト軸の露出が防止され、ナットを回動させるノブが本体フレームから外方へ突出する長さが抑制された、使用者にとって安全な浴槽用手摺りが提供される。 According to the present invention, when the pressing plate is brought closest to the vertical portion of the main body frame, the bolt shaft protruding outward from the vertical portion on the opposite side of the vertical portion of the main body frame is provided inside the knob. A chamber is provided for accommodation. For this reason, in the handrail for bathtubs of the present invention, even if the nut is rotated by the knob, the bolt shaft does not protrude outward from the main body frame and is not exposed, and the position of the knob with respect to the main body frame does not change. . As a result, it is possible to provide a handrail for a bathtub that is safe for the user, in which the bolt shaft that causes the pressing plate to be screwed back and forth is prevented and the length that the knob that rotates the nut protrudes outward from the main body frame is suppressed. Is done.
　さらに、本発明によれば、ノブからナットへトルクを伝達する経路の途中にトルク伝達機構が設けられている。このため、本発明の浴槽用手摺りでは、押圧板は、所定の押付け力で浴槽の側壁を確実にグリップすることができ、そして押圧板の押付け力が強過ぎることによって浴槽側壁の破壊を防止することもできる。 Furthermore, according to the present invention, a torque transmission mechanism is provided in the middle of a path for transmitting torque from the knob to the nut. For this reason, in the handrail for bathtubs of the present invention, the pressing plate can securely grip the side wall of the bathtub with a predetermined pressing force, and prevents the pressing of the pressing plate from being too strong to prevent the destruction of the bathtub side wall. You can also
本発明の浴槽用手摺りの概要図である。It is a schematic diagram of the handrail for bathtubs of this invention. 図１に示される浴槽用手摺りの化粧カバーおよび上部グリップを外した状態の概要図である。It is the schematic of the state which removed the makeup | decoration cover and upper grip of the handrail for bathtubs shown by FIG. 第１の態様のトルク伝達機構を備えた浴槽用手摺りをボルト軸の軸芯に沿って切り取った断面図である。It is sectional drawing which cut off the handrail for bathtubs provided with the torque transmission mechanism of a 1st aspect along the axial center of a bolt shaft. 図３に示される浴槽用手摺りのトルク伝達ハンドルを部分的に拡大した断面図である。It is sectional drawing which expanded partially the torque transmission handle of the handrail for bathtubs shown by FIG. 図４に示されるトルク伝達ハンドルの分解した状態を模式的に示す分解図である。FIG. 5 is an exploded view schematically showing an exploded state of the torque transmission handle shown in FIG. 4. トルク伝受面に対し、環状部材及び弾性体の配置を軸方向に入れ換えた、第２の態様のトルク伝達機構を備えた浴槽用手摺りのトルク伝達ハンドルをボルト軸の軸芯に沿って切り取った断面図である。The torque transmission handle of the handrail for bathtubs provided with the torque transmission mechanism of the second aspect in which the arrangement of the annular member and the elastic body is changed in the axial direction with respect to the torque transmission surface is cut along the axis of the bolt shaft. FIG. 第３の態様のトルク伝達機構を備えた浴槽用手摺りのトルク伝達ハンドルをボルト軸の軸芯に沿って切り取った断面図である。It is sectional drawing which cut off the torque transmission handle of the handrail for bathtubs provided with the torque transmission mechanism of the 3rd aspect along the axial center of a bolt axis | shaft. 第４の態様のトルク伝達機構を備えた浴槽用手摺りのトルク伝達ハンドルをボルト軸の軸芯に沿って切り取った断面図である。It is sectional drawing which cut off the torque transmission handle of the handrail for bathtubs provided with the torque transmission mechanism of the 4th aspect along the axial center of a bolt axis | shaft. 図８ａに示されるトルク伝達ハンドルをＸ－Ｘ断面で切り取った断面図である。FIG. 8B is a cross-sectional view of the torque transmission handle shown in FIG. 図８ａ，８ｂに示されるトルク伝達ハンドルの分解した状態を模式的に示す分解図である。FIG. 9 is an exploded view schematically showing an exploded state of the torque transmission handle shown in FIGS. 8a and 8b. 第４の態様のトルク伝達機構で使用されるナットの斜視図である。It is a perspective view of the nut used with the torque transmission mechanism of the 4th mode. 図１０ａに示されるナットをＡ－Ａ断面で切り取った断面図である。FIG. 10b is a cross-sectional view of the nut shown in FIG. 第４の態様のトルク伝達機構で使用され且つノブの内周面へ嵌合される筒状部材の斜視図である。It is a perspective view of the cylindrical member used with the torque transmission mechanism of a 4th aspect, and fitted to the internal peripheral surface of a knob. 図１１ａに示される筒状部材の端面図である。FIG. 11b is an end view of the tubular member shown in FIG. 11a.
　以下、本発明の一実施形態に係る浴槽用手摺りについて、図面を参照しながら詳細に説明する。なお、本発明は、以下に示される実施例に限定されるものではなく、本発明の技術的思想を逸脱しない範囲内で各種の変更が可能である。 Hereinafter, a handrail for a bathtub according to an embodiment of the present invention will be described in detail with reference to the drawings. The present invention is not limited to the examples shown below, and various modifications can be made without departing from the technical idea of the present invention.
　図１及び図２を用いて、本実施例の浴槽用手摺り１の主な構成を説明する。図１には、本実施例の浴槽用手摺り１の全体が示されている。また、図２には、図１に示された浴槽用手摺り１の化粧カバー１１３，１１４および上部グリップ１３を取り外した状態の全体が示されている。 The main structure of the handrail 1 for a bathtub of a present Example is demonstrated using FIG.1 and FIG.2. The whole handrail 1 for bathtubs of a present Example is shown by FIG. 2 shows the entire state in which the decorative covers 113 and 114 and the upper grip 13 of the handrail 1 for a bathtub shown in FIG. 1 are removed.
　図１及び図２を参照して理解されるように、浴槽用手摺り１は、略Ｌ字型の本体フレーム１１と、略Ｌ字型の可動フレーム１２とから構成されている。本体フレーム１１は垂直部１１１と水平部１１２を有し、浴槽の側壁（図示せず）へ配置される。一方、可動フレーム１２は水平部分と垂直部分を有し、本体フレーム１１の水平部１１２へスライド可能に取り付けられる。また、浴槽用手摺り１は、主に浴槽への出入りを補助するために浴槽側壁の上方に配置される上部グリップ１３と、浴槽からの出浴を補助するために浴槽側（浴槽内）に配置される側部グリップ１４とを備えている。上部グリップ１３は本体フレーム１１へ２本の脚１３１を利用して昇降可能に取り付けられており、側部グリップ１４は可動フレーム１２へ着脱可能に取り付けられている。 As will be understood with reference to FIGS. 1 and 2, the bathtub handrail 1 is composed of a substantially L-shaped main body frame 11 and a substantially L-shaped movable frame 12. The main body frame 11 has a vertical portion 111 and a horizontal portion 112, and is disposed on a side wall (not shown) of the bathtub. On the other hand, the movable frame 12 has a horizontal portion and a vertical portion, and is slidably attached to the horizontal portion 112 of the main body frame 11. Moreover, the handrail 1 for bathtubs is mainly provided on the side of the bathtub (inside the bathtub) in order to assist the bathing from the bathtub and the upper grip 13 disposed above the sidewall of the bathtub in order to assist in entering and exiting the bathtub. And a side grip 14 to be arranged. The upper grip 13 is detachably attached to the main body frame 11 using two legs 131, and the side grip 14 is detachably attached to the movable frame 12.
　本実施例の浴槽用手摺り１は、浴槽用手摺り１を浴槽側壁に固定するために、浴槽側壁を洗い場側から挟み込むための第１の押圧板１５と、第１の押圧板１５と対向し且つ浴槽側壁を浴槽側から挟み込むための第２の押圧板１６とを備えている。 The handrail 1 for bathtubs of the present embodiment is opposed to the first pressing plate 15 and the first pressing plate 15 for sandwiching the bathtub side walls from the washing place side in order to fix the handrail 1 for bathtubs to the bathtub side wall. And a second pressing plate 16 for sandwiching the bathtub side wall from the bathtub side.
　図３には、本実施例の浴槽用手摺り１を、ボルト軸２の軸芯に沿って切り取った断面図が示されている。 FIG. 3 shows a cross-sectional view of the bathtub handrail 1 of this embodiment cut along the axis of the bolt shaft 2.
　図３を参照して理解されるように、第１の押圧板１５はボルト軸２によって支承されており、ボルト軸２は本体フレーム１１の垂直部１１１に回転自在に固定されているナット３と螺合され、支承されている。また、ナット３の外側には、ナットにトルク（回動力）を伝達するためのノブ４が回転自在に外装されている。さらに、ナット３の外側であって且つノブ４の内側には、ノブ４からナット３へ伝達されるトルクが所定の値未満ではノブ４からナット３へトルクを伝達し、且つ伝達されるトルクが所定の値以上ではノブ４からナット３へのトルクの伝達を遮断する、トルク伝達機構５が取り付けられている。従って、押圧板１５は、ボルト軸２と、ナット３と、ノブ４と、そしてトルク伝達機構５からなるトルク伝達ハンドル６によって本体フレーム１１に対し螺進退させることができる。 As can be understood with reference to FIG. 3, the first pressing plate 15 is supported by the bolt shaft 2, and the bolt shaft 2 includes a nut 3 that is rotatably fixed to the vertical portion 111 of the main body frame 11. Screwed and supported. In addition, a knob 4 for transmitting torque (rotational power) to the nut 3 is rotatably provided outside the nut 3. Further, outside the nut 3 and inside the knob 4, when the torque transmitted from the knob 4 to the nut 3 is less than a predetermined value, the torque is transmitted from the knob 4 to the nut 3, and the transmitted torque is transmitted. A torque transmission mechanism 5 that cuts off torque transmission from the knob 4 to the nut 3 above a predetermined value is attached. Therefore, the pressing plate 15 can be screwed back and forth with respect to the main body frame 11 by the torque transmission handle 6 including the bolt shaft 2, the nut 3, the knob 4, and the torque transmission mechanism 5.
　浴槽用手摺り１のトルク伝達機構５は、ノブ４によりナット３を回動することによって押圧板１５を支承したボルト軸２を螺進退させるものであるため、ナット３は本体フレーム１１の垂直部１１１に回転自在に取り付けられている。このため、ナット３は、回動させても本体フレーム１１の垂直部１１１から軸方向へ移動することがなく、ボルト軸２のみが螺進退する。 The torque transmission mechanism 5 of the bathtub handrail 1 rotates the bolt 3 that supports the pressing plate 15 by rotating the nut 3 by the knob 4, so that the nut 3 is a vertical portion of the body frame 11. 111 is rotatably attached. For this reason, even if the nut 3 is rotated, it does not move in the axial direction from the vertical portion 111 of the main body frame 11, and only the bolt shaft 2 is screwed back and forth.
　ナット３を回動するためのノブ４は、ナット３に対し回動自在に外装されており、ナット３と同様に本体フレーム１１の垂直部１１１に回転自在に取り付けられている。本実施例の浴槽用手摺り１の場合、ノブ４の胴部の付け根には拡径したフランジ部４１が設けられており、ノブ４は、ノブ４のフランジ部４１を、フランジ部４１より小さな径の開口部１１５を有する化粧カバー１１３で覆うことにより、本体フレーム１１に回動自在に取り付けられている。 The knob 4 for rotating the nut 3 is rotatably mounted on the nut 3 and is rotatably attached to the vertical portion 111 of the main body frame 11 in the same manner as the nut 3. In the case of the handrail 1 for bathtubs of the present embodiment, a flange portion 41 having an enlarged diameter is provided at the base of the body portion of the knob 4, and the knob 4 is smaller than the flange portion 41. By covering with a decorative cover 113 having an opening 115 having a diameter, it is rotatably attached to the main body frame 11.
　ノブ４の内部には、押圧板１５を最も本体フレーム１１の垂直部１１１へ近づけた時、本体フレーム１１の垂直部１１１の反対側で、該垂直部１１１から外方へ向けて突出したボルト軸２を収容するための室４２が設けられている。このため、本実施例の浴槽用手摺り１では、ノブ４によりナット３を回動させても、ボルト軸２が本体フレーム１１から外方へ突出して露出することがない。また、ボルト軸２を螺進退させても、本体フレーム１１に対するノブ４の相対位置が変わることもない。さらに、第１の態様のトルク伝達ハンドル６では、ノブ４はナット３を介してボルト軸２の後端部分を覆うように配置されるため、ノブ４がボルト軸２の後端に直列的に配置される他のタイプのトルク伝達ハンドルよりも、ノブ４が本体フレーム１１から外方へ突出する部分の長さが短く且つコンパクトにすることができる。 Inside the knob 4, when the pressing plate 15 is closest to the vertical portion 111 of the main body frame 11, a bolt shaft that protrudes outward from the vertical portion 111 on the opposite side of the vertical portion 111 of the main body frame 11. A chamber 42 for accommodating 2 is provided. For this reason, in the handrail 1 for bathtubs of the present embodiment, even if the nut 3 is rotated by the knob 4, the bolt shaft 2 does not protrude outward from the main body frame 11 and is not exposed. Further, even if the bolt shaft 2 is screwed back and forth, the relative position of the knob 4 with respect to the main body frame 11 does not change. Furthermore, in the torque transmission handle 6 of the first aspect, the knob 4 is disposed so as to cover the rear end portion of the bolt shaft 2 via the nut 3, so that the knob 4 is connected in series with the rear end of the bolt shaft 2. The length of the portion of the knob 4 protruding outward from the main body frame 11 can be made shorter and more compact than the other types of torque transmission handles arranged.
　このように、本実施例の浴槽用手摺り１によれば、押圧板１５を螺進退させるボルト軸２の露出が防止され、ナット３を回動させるノブ４が本体フレーム１１から外方へ突出する長さが抑制されているので、使用者にとって邪魔であり危険な障害物が排除された安全な浴槽用手摺り１を提供することができる。 Thus, according to the handrail 1 for a bathtub of this embodiment, exposure of the bolt shaft 2 for screwing the pressing plate 15 forward and backward is prevented, and the knob 4 for rotating the nut 3 protrudes outward from the main body frame 11. Therefore, a safe handrail 1 for a bathtub in which obstacles that are bothersome and dangerous for the user are eliminated can be provided.
　さらに、本実施例の浴槽用手摺り１は、ノブ４からナット３へトルクを伝達する経路の途中に、伝達されるトルクが所定の値未満では、ノブ４からナット３へトルクを伝達し、且つ伝達されるトルクが所定の値以上では、ノブ４からナット３へのトルクの伝達を遮断するトルク伝達機構５が設けられている。 Furthermore, the bathtub handrail 1 of the present embodiment transmits torque from the knob 4 to the nut 3 in the course of transmitting torque from the knob 4 to the nut 3 when the transmitted torque is less than a predetermined value. In addition, when the transmitted torque is equal to or greater than a predetermined value, a torque transmission mechanism 5 that interrupts transmission of torque from the knob 4 to the nut 3 is provided.
　このため、本実施例の浴槽用手摺り１では、ノブ４を回転することにより押圧板１５を螺進退させて浴槽の側壁へ押し付けても、ノブ４からナット３へ伝達されるトルクが所定の値以上に到達した時、換言すれば、浴槽の側壁に対する押圧板１５の押付け力（又は締付け力）が所定の値以上に到達した時は、ノブ４からナット３へのトルクの伝達が遮断される。その結果、押圧板１５は、所定の押付け力で浴槽の側壁を確実にグリップすることができ、そして押圧板１５の押付け力が強過ぎることによって浴槽の側壁を破壊することも防止される。 For this reason, in the handrail 1 for bathtubs of this embodiment, even if the pressing plate 15 is screwed back and forth by rotating the knob 4 and pressed against the side wall of the bathtub, the torque transmitted from the knob 4 to the nut 3 is predetermined. When reaching the value, in other words, when the pressing force (or tightening force) of the pressing plate 15 against the side wall of the bathtub reaches a predetermined value or more, the transmission of torque from the knob 4 to the nut 3 is cut off. The As a result, the pressing plate 15 can securely grip the side wall of the bathtub with a predetermined pressing force, and the pressing plate 15 is prevented from being destroyed due to the pressing force of the pressing plate 15 being too strong.
　以下に、図４～図１１ｂを参照して、本実施例の浴槽用手摺り１で使用される特徴のある第１，第２，第３のトルク伝達機構５，５ａ，５ｂを備えたトルク伝達ハンドル６，６ａ，６ｂについて、さらに詳しく説明する。 In the following, referring to FIG. 4 to FIG. 11b, the torque provided with the first, second and third torque transmission mechanisms 5, 5a, 5b which are characteristic in the handrail 1 for bathtub of this embodiment The transmission handles 6, 6a, 6b will be described in more detail.
　図４には、第１の態様のトルク伝達機構５を備えたトルク伝達ハンドル６をボルト軸２の軸芯に沿って切り取った断面図が示されている。また、図５には、図４に示されるトルク伝達ハンドル６を軸方向に分解した状態が模式的に示されている。 FIG. 4 shows a cross-sectional view of the torque transmission handle 6 provided with the torque transmission mechanism 5 according to the first aspect, cut along the axis of the bolt shaft 2. FIG. 5 schematically shows a state where the torque transmission handle 6 shown in FIG. 4 is disassembled in the axial direction.
　図４及び図５を参照して理解されるように、第１の態様のトルク伝達機構５を備えたトルク伝達ハンドル６は、押圧板１５を支承するボルト軸２と、ボルト軸２と螺合するナット３と、ナット３に外装されるノブ４と、ナット３とノブ４の間に配設されるトルク伝達機構５から構成されている。 As can be understood with reference to FIGS. 4 and 5, the torque transmission handle 6 having the torque transmission mechanism 5 of the first aspect includes the bolt shaft 2 that supports the pressing plate 15, and the bolt shaft 2. A nut 3 that is mounted on the nut 3, and a torque transmission mechanism 5 that is disposed between the nut 3 and the knob 4.
　ナット３は、本体フレーム１１の垂直部１１１に設けられた貫通口へ挿通される胴部３１と、該貫通口より大きく且つ胴部３１から放射方向に延びたフランジ３２を備えている。そしてナット３の胴部３１を貫通口へ挿通し、フランジ３２が本体フレーム１１の垂直部１１１へ当接する側の反対側から、貫通口より大きな外径を有する第２の環状部材８をネジ３３によってフランジ３２へネジ止めすることにより、ナット３は本体フレーム１１の垂直部１１１へ回転自在に取り付けられている（図３，５参照）。 The nut 3 includes a trunk portion 31 that is inserted into a through-hole provided in the vertical portion 111 of the main body frame 11 and a flange 32 that is larger than the through-hole and extends in the radial direction from the trunk portion 31. Then, the body portion 31 of the nut 3 is inserted into the through hole, and the second annular member 8 having an outer diameter larger than that of the through hole is screwed 33 from the side opposite to the side where the flange 32 contacts the vertical portion 111 of the main body frame 11. The nut 3 is rotatably attached to the vertical portion 111 of the main body frame 11 by being screwed to the flange 32 (see FIGS. 3 and 5).
　また、ナット３は、樹脂製のワッシャー３４を介して本体フレーム１１の垂直部１１１へ取り付けられているので、ナット３のガタ付きの少ない円滑な回転が強化されている。 Further, since the nut 3 is attached to the vertical portion 111 of the main body frame 11 via the resin washer 34, smooth rotation with little play of the nut 3 is reinforced.
　第１の態様のトルク伝達機構５は、ノブ４の回転軸に対して直交する略円形のトルク伝達面７１を備えており、そしてノブ４の回転と同調し且つノブ４の回転軸に沿ってスライド可能に内装される環状部材７と、トルク伝達面７１に当接し、そしてナット３の回転軸に対して直交する略円形のトルク伝受面８１を備え且つナット３へ着脱自在に装着されている第２の環状部材８と、環状部材７のトルク伝達面７１を第２の環状部材８のトルク伝受面８１へ向けて付勢するコイルバネ１０を備えている。また、コイルバネ１０の端部は、ネジ３５によってナット３の端部に装着されるストッパー３６によって固定されている。 The torque transmission mechanism 5 of the first aspect includes a substantially circular torque transmission surface 71 orthogonal to the rotation axis of the knob 4, and is synchronized with the rotation of the knob 4 and along the rotation axis of the knob 4. An annular member 7 that is slidably mounted, a torque transmission surface 71 that is in contact with the torque transmission surface 71, and a substantially circular torque transmission surface 81 that is orthogonal to the rotation axis of the nut 3 are detachably mounted on the nut 3. The second annular member 8 and the coil spring 10 that urges the torque transmission surface 71 of the annular member 7 toward the torque transmission surface 81 of the second annular member 8 are provided. Further, the end of the coil spring 10 is fixed by a stopper 36 attached to the end of the nut 3 with a screw 35.
　そしてトルク伝達面７１およびトルク伝受面８１は、それぞれに伝達されるトルクが所定の値未満では、トルク伝達面７１とトルク伝受面８１とを相互に係止し、且つ伝達されるトルクが所定の値以上では、トルク伝達面７１とトルク伝受面８１との間で滑りを生じさせる傾斜面を備えた凹部または凸部７１１，８１１を含んでいる。 When the torque transmitted to each of the torque transmission surface 71 and the torque transmission surface 81 is less than a predetermined value, the torque transmission surface 71 and the torque transmission surface 81 are mutually locked, and the transmitted torque is Above a predetermined value, it includes concave portions or convex portions 711 and 811 each having an inclined surface that causes slippage between the torque transmission surface 71 and the torque transmission surface 81.
　図５に示されているように、ノブ４と環状部材７との同調は、ノブ４の中に環状部材７を装着した時、ノブ４の内周面上に形成された複数の凹凸（図示せず）が、環状部材７の外周面上に形成された凹凸７２と嵌合することによって保証される。また、第２の環状部材８とナット３との同調は、ナット３へ第２の環状部材８を装着した時、ナット３の外周面上に形成された複数の凹凸３８が、第２の環状部材８の内周面上に形成された凹凸８２と嵌合することによって保証される。 As shown in FIG. 5, the knob 4 and the annular member 7 are synchronized with each other when the annular member 7 is mounted in the knob 4. (Not shown) is ensured by fitting with the irregularities 72 formed on the outer peripheral surface of the annular member 7. The second annular member 8 and the nut 3 are synchronized with each other when the second annular member 8 is attached to the nut 3 so that the plurality of irregularities 38 formed on the outer peripheral surface of the nut 3 are This is ensured by fitting with the irregularities 82 formed on the inner peripheral surface of the member 8.
　図４に示されているように、第１の態様のトルク伝達機構５では、トルク伝達面７１の中心およびトルク伝受面８１の中心は、共通するノブ４およびナット３の回転軸上に配置されている。また、トルク伝達面７１上およびトルク伝受面８１上には、それぞれにトルク伝達面７１またはトルク伝受面８１から傾斜した斜面を含む凹部／凸部７１１，８１１が形成されている。トルク伝達面７１の傾斜面およびトルク伝受面８１の傾斜面は、押圧板１５が浴槽の側壁へ向かって前進するようにノブ４を回す時、互いに対向する相手側の傾斜面を昇るように勾配が付けられている。そしてトルク伝達面７１を有する環状部材７は、ノブ４の内周面とナット３の外周面との間でノブ４の回転軸に沿ってスライド可能に装着されており、且つコイルバネ１０によってトルク伝受面８１に向けて付勢されている。 As shown in FIG. 4, in the torque transmission mechanism 5 of the first aspect, the center of the torque transmission surface 71 and the center of the torque transmission surface 81 are arranged on the common rotating shaft of the knob 4 and the nut 3. Has been. Further, on the torque transmission surface 71 and the torque transmission surface 81, concave / convex portions 711 and 811 each including a slope inclined from the torque transmission surface 71 or the torque transmission surface 81 are formed. The inclined surface of the torque transmitting surface 71 and the inclined surface of the torque transmitting surface 81 are such that when the knob 4 is turned so that the pressing plate 15 moves forward toward the side wall of the bathtub, the opposing inclined surface facing each other rises. There is a gradient. The annular member 7 having the torque transmission surface 71 is slidably mounted along the rotation axis of the knob 4 between the inner peripheral surface of the knob 4 and the outer peripheral surface of the nut 3, and the torque transmission is performed by the coil spring 10. It is biased toward the receiving surface 81.
　このため、トルク伝達面７１の傾斜面とトルク伝受面８１の傾斜面との間には常に一定の摩擦力が生じている。そして、ノブ４からナット３へ伝達されるトルクが所定の値未満である時、トルク伝達面７１の傾斜面はトルク伝受面８１の傾斜面を乗り越えることができず、互いに噛み合った状態で係合している。そして、この係合によりノブ４のトルクがナット３へ伝達され、該ナット３と螺合しているボルト軸２が螺進退される。 Therefore, a constant frictional force is always generated between the inclined surface of the torque transmission surface 71 and the inclined surface of the torque transmission surface 81. When the torque transmitted from the knob 4 to the nut 3 is less than a predetermined value, the inclined surface of the torque transmitting surface 71 cannot get over the inclined surface of the torque transmitting surface 81 and is engaged with each other. Match. And the torque of the knob 4 is transmitted to the nut 3 by this engagement, and the bolt shaft 2 screwed with the nut 3 is screwed back and forth.
　一方、ノブ４からナット３へ伝達されるトルクが所定の値以上になると、トルク伝達面７１の傾斜面はトルク伝受面８１の傾斜面との間に滑りが生じる。その結果、トルク伝達面７１を有する環状部材７はコイルバネ１０に抗して後退し、トルク伝達面７１の傾斜面がトルク伝受面８１の傾斜面を乗り越えることによって両者７１，８１の係合が解除される。そのため、この状態でノブ４を回してもノブ４はナット３の周りで空回りするのみであり、ノブ４からナット３へトルクが伝達されることはない。 On the other hand, when the torque transmitted from the knob 4 to the nut 3 exceeds a predetermined value, the inclined surface of the torque transmitting surface 71 slips between the inclined surface of the torque transmitting surface 81. As a result, the annular member 7 having the torque transmission surface 71 is retracted against the coil spring 10, and the inclined surface of the torque transmission surface 71 gets over the inclined surface of the torque transmission surface 81. Canceled. Therefore, even if the knob 4 is rotated in this state, the knob 4 only idles around the nut 3, and no torque is transmitted from the knob 4 to the nut 3.
　また、トルク伝達面７１の傾斜面の後端にはトルク伝達面７１に略直交する垂直面が形成されており、トルク伝受面８１の傾斜面の後端にはトルク伝受面８１に略直交する垂直面が形成されている（図５参照）。トルク伝達面７１の垂直面とトルク伝受面８１の垂直面は、押圧板１５が浴槽の側壁から後退するようにノブ４を回した時、互いに当接し係合する。そのため、押圧板１５が浴槽の側壁から後退するようにノブ４を回す時は、伝達されるトルクの大きさに拠らず、常にノブ４とナット３は同調して回転する。 Further, a vertical surface substantially orthogonal to the torque transmission surface 71 is formed at the rear end of the inclined surface of the torque transmission surface 71, and the torque transmission surface 81 is approximately at the rear end of the inclined surface of the torque transmission surface 81. An orthogonal vertical plane is formed (see FIG. 5). The vertical surface of the torque transmission surface 71 and the vertical surface of the torque transmission surface 81 are brought into contact with each other and engaged when the knob 4 is rotated so that the pressing plate 15 is retracted from the side wall of the bathtub. Therefore, when the knob 4 is turned so that the pressing plate 15 moves backward from the side wall of the bathtub, the knob 4 and the nut 3 always rotate in synchronism regardless of the magnitude of the transmitted torque.
　このように、第１の態様のトルク伝達機構５は、ナット３の回転軸に対して直交するナット３の端面をトルク伝受面８１として利用するものであるが、ノブ４からナット３へのトルクを確実に伝受または遮断することができる。なぜなら、第１の態様のトルク伝達機構５では、ナット３に設けられるトルク伝受面８１を、ナット３の外周面に装着される第２の環状部材８に形成したことにより、本来のナット３の端面よりより一層大きな面積を有するトルク伝受面８１をナット３の外周面に設けることができたからである。なお、ナット３の端部の肉厚（外形寸法）を増大させてナット３の端面の面積を広くし、トルク伝受面８１をナット３の外周面ではなくナット３の本来の端面であるナット３の側端面に設けることで、ノブ４からナット３へのトルクを伝受または遮断することもできる。この場合には、ナット３の側端面と対向するようにトルク伝達面７１を有する環状部材７を配置し、環状部材７のトルク伝達面７１をナット３の側端面に設けたトルク伝受面８１に向けて付勢するように、コイルバネ１０を配置する。 As described above, the torque transmission mechanism 5 according to the first aspect uses the end surface of the nut 3 orthogonal to the rotation axis of the nut 3 as the torque transmission surface 81, but from the knob 4 to the nut 3. Torque can be reliably transmitted or cut off. This is because in the torque transmission mechanism 5 of the first aspect, the torque transmission surface 81 provided on the nut 3 is formed on the second annular member 8 attached to the outer peripheral surface of the nut 3, so that the original nut 3 This is because the torque transmission surface 81 having a larger area than the end surface of the nut 3 can be provided on the outer peripheral surface of the nut 3. In addition, the thickness (outside dimension) of the end portion of the nut 3 is increased to widen the area of the end surface of the nut 3, and the torque transmission surface 81 is not the outer peripheral surface of the nut 3 but the nut that is the original end surface of the nut 3. 3, the torque from the knob 4 to the nut 3 can be transmitted or cut off. In this case, the annular member 7 having the torque transmission surface 71 is disposed so as to face the side end surface of the nut 3, and the torque transmission surface 81 provided with the torque transmission surface 71 of the annular member 7 on the side end surface of the nut 3. The coil spring 10 is disposed so as to be biased toward the.
　次に、図６を用いて、第２の態様のトルク伝達機構５ａを備えたトルク伝達ハンドル６ａについて説明する。図６には、第２の態様のトルク伝達機構５ａを備えたトルク伝達ハンドル６ａをボルト軸２の軸芯に沿って切り取った断面図が示されている。 Next, the torque transmission handle 6a provided with the torque transmission mechanism 5a of the second aspect will be described with reference to FIG. FIG. 6 shows a cross-sectional view of the torque transmission handle 6a provided with the torque transmission mechanism 5a of the second aspect taken along the axis of the bolt shaft 2. As shown in FIG.
　第２の態様のトルク伝達機構５ａは、第１の態様（図４）において、トルク伝達面７１が形成された環状部材７と、トルク伝受面８１が形成されたナット３の配列を軸方向に入れ換え、且つコイルバネ１０の位置及び形状も変更することにより、環状部材７ａのトルク伝達面７１ａが、皿バネ１０ａによってナット３ａのトルク伝受面８１ａを付勢するように小変更したものである。 The torque transmission mechanism 5a according to the second aspect is the same as the first aspect (FIG. 4) in that the annular member 7 formed with the torque transmission surface 71 and the nut 3 formed with the torque transmission surface 81 are arranged in the axial direction. The torque transmission surface 71a of the annular member 7a is slightly changed so that the torque transmission surface 81a of the nut 3a is biased by the disc spring 10a by changing the position and shape of the coil spring 10. .
　図６を参照して理解されるように、第２の態様のトルク伝達機構５ａを備えたトルク伝達ハンドル６ａは、押圧板１５を支承するボルト軸２と、ボルト軸２と螺合するナット３ａと、ナット３ａに外装されるノブ４と、ナット３ａとノブ４の間に配設されるトルク伝達機構５ａから構成されている。 As can be understood with reference to FIG. 6, the torque transmission handle 6 a having the torque transmission mechanism 5 a of the second aspect includes a bolt shaft 2 that supports the pressing plate 15, and a nut 3 a that is screwed with the bolt shaft 2. And a knob 4 mounted on the nut 3 a, and a torque transmission mechanism 5 a disposed between the nut 3 a and the knob 4.
　ナット３ａは、本体フレーム１１の垂直部１１１に設けられた貫通口へ挿通される胴部３１ａと、該貫通口より大きく且つ胴部３１ａから放射方向に延びたフランジ３２ａを備えている。そしてナット３ａの胴部３１ａを貫通口へ挿通し、フランジ３２ａが本体フレーム１１の垂直部１１１へ当接する側の反対側から、貫通口より大きな外径を有する固定リング９をネジ３３によってナット３ａへネジ止めすることにより、ナット３ａは本体フレーム１１の垂直部１１１へ回転自在に取り付けられている。 The nut 3a includes a trunk portion 31a that is inserted into a through-hole provided in the vertical portion 111 of the main body frame 11, and a flange 32a that is larger than the through-hole and extends in the radial direction from the trunk portion 31a. Then, the body 31a of the nut 3a is inserted into the through hole, and the fixing ring 9 having an outer diameter larger than that of the through hole is inserted by the screw 33 from the side opposite to the side where the flange 32a contacts the vertical part 111 of the main body frame 11. The nut 3 a is rotatably attached to the vertical portion 111 of the main body frame 11 by screwing to the main frame 11.
　また、ナット３ａは、樹脂製のワッシャー３４を介して本体フレーム１１の垂直部１１１へ取り付けられているので、ナット３ａのガタ付きの少ない円滑な回転が強化されている。 Further, since the nut 3a is attached to the vertical portion 111 of the main body frame 11 via the resin washer 34, smooth rotation with little play of the nut 3a is reinforced.
　第２の態様のトルク伝達機構５ａは、ノブ４の回転軸に対して直交する略円形のトルク伝達面７１ａを備えており、そしてノブ４の回転と同調し且つノブ４の回転軸に沿ってスライド可能に内装される環状部材７ａと、トルク伝達面７１ａに当接し、そしてナット３ａの回転軸に対して直交する略円形のトルク伝受面８１ａを備え且つナット３ａへ着脱自在に装着されている第２の環状部材８ａと、環状部材７ａのトルク伝達面７１ａを第２の環状部材８ａのトルク伝受面８１ａへ向けて付勢するコイルバネ１０を備えている。また、コイルバネ１０の端部は、ネジ３５によってナット３の端部に装着されるストッパー３６によって固定されている。また、ナット３ａの端部には、ノブ４の中でのナット３ａのガタ付きを減少させるため、ネジ３５によってストッパー３６が取り付けられている。 The torque transmission mechanism 5a of the second aspect includes a substantially circular torque transmission surface 71a orthogonal to the rotation axis of the knob 4, and is synchronized with the rotation of the knob 4 and along the rotation axis of the knob 4. An annular member 7a that is slidably mounted, a substantially circular torque transmission surface 81a that is in contact with the torque transmission surface 71a and orthogonal to the rotation axis of the nut 3a, and is detachably attached to the nut 3a. The second annular member 8a and the coil spring 10 that urges the torque transmission surface 71a of the annular member 7a toward the torque transmission surface 81a of the second annular member 8a are provided. Further, the end of the coil spring 10 is fixed by a stopper 36 attached to the end of the nut 3 with a screw 35. A stopper 36 is attached to the end of the nut 3a with a screw 35 in order to reduce backlash of the nut 3a in the knob 4.
　そしてトルク伝達面７１ａおよびトルク伝受面８１ａは、それぞれに伝達されるトルクが所定の値未満では、トルク伝達面７１ａとトルク伝受面８１ａとを相互に係止し、且つ伝達されるトルクが所定の値以上では、トルク伝達面７１ａとトルク伝受面８１ａとの間で滑りを生じさせる傾斜面を備えた凹部または凸部を含んでいる。 When the torque transmitted to each of the torque transmission surface 71a and the torque transmission surface 81a is less than a predetermined value, the torque transmission surface 71a and the torque transmission surface 81a are mutually locked, and the transmitted torque is Above the predetermined value, it includes a concave portion or a convex portion provided with an inclined surface that causes slippage between the torque transmission surface 71a and the torque transmission surface 81a.
　図示しないが、ノブ４と環状部材７ａとの同調は、ノブ４の中に環状部材７ａを装着した時、ノブ４の内周面上に形成された複数の凹凸が、環状部材７ａの外周面上に形成された凹凸と嵌合することによって保証される。また、第２の環状部材８ａとナット３ａとの同調は、ナット３ａへ第２の環状部材８ａを装着した時、ナット３ａの外周面上に形成された複数の凹凸が、第２の環状部材８ａの内周面上に形成された凹凸と嵌合することによって保証される。なお、各部品の同調は、図示しないが、環状部材７ａの内周面とナット３ａの外周面に凹凸を設けることにより、環状部材７ａとナット３ａとを同調させ、第２の環状部材８ａの外周面とノブ４の内周面に凹凸を設けることにより、第２の環状部材８ａとノブ４とを同調させる組み合せとしてもよい。 Although not shown, the tuning of the knob 4 and the annular member 7a is such that when the annular member 7a is mounted in the knob 4, a plurality of irregularities formed on the inner circumferential surface of the knob 4 are formed on the outer circumferential surface of the annular member 7a. Guaranteed by mating with the irregularities formed on it. In addition, the second annular member 8a and the nut 3a are synchronized with each other when the second annular member 8a is mounted on the nut 3a. This is ensured by fitting with the unevenness formed on the inner peripheral surface of 8a. Although not shown in the figure, each component is synchronized with the inner circumferential surface of the annular member 7a and the outer circumferential surface of the nut 3a so that the annular member 7a and the nut 3a are synchronized with each other. It is good also as a combination which synchronizes the 2nd annular member 8a and the knob 4 by providing an unevenness | corrugation in an outer peripheral surface and the inner peripheral surface of the knob 4. FIG.
　図６に示されているように、第２の態様のトルク伝達機構５ａでは、トルク伝達面７１ａの中心およびトルク伝受面８１ａの中心は、共通するノブ４およびナット３ａの回転軸上に配置されている。また、トルク伝達面７１ａ上およびトルク伝受面８１ａ上には、それぞれにトルク伝達面７１ａまたはトルク伝受面８１ａから傾斜した斜面を含む凹部／凸部が形成されている。トルク伝達面７１ａの傾斜面およびトルク伝受面８１ａの傾斜面は、押圧板１５が浴槽の側壁へ向かって前進するようにノブ４を回す時、互いに対向する相手側の傾斜面を昇るように勾配が付けられている。そしてトルク伝達面７１ａを有する環状部材７ａは、ノブ４の内周面とナット３の外周面との間でノブ４の回転軸に沿ってスライド可能に装着されており、且つ皿バネ１０ａによってトルク伝受面８１ａに向けて付勢されている。 As shown in FIG. 6, in the torque transmission mechanism 5a of the second aspect, the center of the torque transmission surface 71a and the center of the torque transmission surface 81a are arranged on the common rotation axis of the knob 4 and the nut 3a. Has been. Further, on the torque transmission surface 71a and the torque transmission surface 81a, a concave / convex portion including a slope inclined from the torque transmission surface 71a or the torque transmission surface 81a is formed. The inclined surface of the torque transmitting surface 71a and the inclined surface of the torque transmitting surface 81a are such that when the knob 4 is turned so that the pressing plate 15 advances toward the side wall of the bathtub, the opposing inclined surface facing each other rises. There is a gradient. The annular member 7a having the torque transmission surface 71a is slidably mounted along the rotation axis of the knob 4 between the inner peripheral surface of the knob 4 and the outer peripheral surface of the nut 3, and is torqued by the disc spring 10a. It is biased toward the transmission surface 81a.
　このため、トルク伝達面７１ａの傾斜面とトルク伝受面８１ａの傾斜面との間には常に一定の摩擦力が生じている。そして、ノブ４からナット３ａへ伝達されるトルクが所定の値未満である時、トルク伝達面７１ａの傾斜面はトルク伝受面８１ａの傾斜面を乗り越えることができず、互いに噛み合った状態で係合している。そして、この係合によりノブ４のトルクがナット３ａへ伝達され、該ナット３ａと螺合しているボルト軸２が螺進退される。 Therefore, a constant frictional force is always generated between the inclined surface of the torque transmission surface 71a and the inclined surface of the torque transmission surface 81a. When the torque transmitted from the knob 4 to the nut 3a is less than a predetermined value, the inclined surface of the torque transmitting surface 71a cannot get over the inclined surface of the torque transmitting surface 81a and is engaged in a state of being engaged with each other. Match. Then, the torque of the knob 4 is transmitted to the nut 3a by this engagement, and the bolt shaft 2 screwed with the nut 3a is screwed back and forth.
　一方、ノブ４からナット３ａへ伝達されるトルクが所定の値以上になると、トルク伝達面７１ａの傾斜面はトルク伝受面８１ａの傾斜面との間に滑りが生じる。その結果、トルク伝達面７１ａを有する環状部材７ａは皿バネ１０ａに抗して後退し、トルク伝達面７１ａの傾斜面がトルク伝受面８１ａの傾斜面を乗り越えることによって両者７１ａ，８１ａの係合が解除される。そのため、この状態でノブ４を回してもノブ４はナット３ａの周りで空回りするのみであり、ノブ４からナット３ａへトルクが伝達されることはない。 On the other hand, when the torque transmitted from the knob 4 to the nut 3a exceeds a predetermined value, the inclined surface of the torque transmitting surface 71a slips between the inclined surface of the torque transmitting surface 81a. As a result, the annular member 7a having the torque transmission surface 71a is retracted against the disc spring 10a, and the inclined surface of the torque transmission surface 71a gets over the inclined surface of the torque transmission surface 81a, thereby engaging the both 71a and 81a. Is released. Therefore, even if the knob 4 is rotated in this state, the knob 4 only idles around the nut 3a, and torque is not transmitted from the knob 4 to the nut 3a.
　また、図示しないが、トルク伝達面７１ａの傾斜面の後端にはトルク伝達面７１ａに略直交する垂直面が形成されており、トルク伝受面８１ａの傾斜面の後端にはトルク伝受面８１ａに略直交する垂直面が形成されている。トルク伝達面７１ａの垂直面とトルク伝受面８１ａの垂直面は、押圧板１５が浴槽の側壁から後退するようにノブ４を回した時、互いに当接し係合する。そのため、押圧板１５が浴槽の側壁から後退するようにノブ４を回す時は、伝達されるトルクの大きさに拠らず、常にノブ４とナット３ａは同調して回転する。 Although not shown, a vertical surface substantially orthogonal to the torque transmission surface 71a is formed at the rear end of the inclined surface of the torque transmission surface 71a, and torque transmission is performed at the rear end of the inclined surface of the torque transmission surface 81a. A vertical surface substantially orthogonal to the surface 81a is formed. The vertical surface of the torque transmission surface 71a and the vertical surface of the torque transmission surface 81a contact and engage with each other when the knob 4 is turned so that the pressing plate 15 is retracted from the side wall of the bathtub. Therefore, when the knob 4 is turned so that the pressing plate 15 moves backward from the side wall of the bathtub, the knob 4 and the nut 3a always rotate in synchronism regardless of the magnitude of the transmitted torque.
　このように、第２の態様のトルク伝達機構５ａは、ナット３ａの回転軸に対して直交するナット３ａの端面をトルク伝受面８１ａとして利用するものであるが、ノブ４からナット３ａへのトルクを確実に伝受または遮断することができる。なぜなら、第２の態様のトルク伝達機構５ａでは、ナット３ａに設けられるトルク伝受面８１ａを、ナット３ａの外周面に装着される第２の環状部材８ａに形成したことにより、本来のナット３ａの端面よりより一層大きな面積を有するトルク伝受面８１ａをナット３ａの外周面に設けることができたからである。 As described above, the torque transmission mechanism 5a of the second aspect uses the end surface of the nut 3a orthogonal to the rotation axis of the nut 3a as the torque transmission surface 81a. Torque can be reliably transmitted or cut off. This is because in the torque transmission mechanism 5a of the second mode, the torque transmission surface 81a provided on the nut 3a is formed on the second annular member 8a attached to the outer peripheral surface of the nut 3a, so that the original nut 3a This is because the torque transmission surface 81a having a larger area than the end surface of the nut 3a can be provided on the outer peripheral surface of the nut 3a.
　なお、詳述しないが、第２の態様のトルク伝達機構５ａを備えたトルク伝達ハンドル６ａにおいて、ノブ４の中に室４２及びフランジ部４１を設けたことにより、押圧板１５を螺進退させるボルト軸２の露出が防止され、ナット３ａを回動させるノブ４が本体フレーム１１から外方へ突出する長さが抑制される効果は、第１の態様のトルク伝達機構５を備えたトルク伝達ハンドル６の場合と同じ効果が得られる。 Although not described in detail, in the torque transmission handle 6a provided with the torque transmission mechanism 5a of the second mode, the chamber 42 and the flange portion 41 are provided in the knob 4 so that the pressing plate 15 is screwed back and forth. The effect of preventing the shaft 2 from being exposed and suppressing the length of the knob 4 that rotates the nut 3a to protrude outward from the main body frame 11 is the torque transmission handle provided with the torque transmission mechanism 5 of the first aspect. The same effect as in the case of 6 can be obtained.
　また、第２の態様のトルク伝達機構５ａを設けたことにより、押圧板１５は、所定の押付け力で浴槽の側壁を確実にグリップすることができ、そして押圧板１５の押付け力が強過ぎることによって浴槽の側壁を破壊することも防止される効果も、第１の態様のトルク伝達機構５を備えたトルク伝達ハンドル６の場合と同じ効果が得られる。 Moreover, by providing the torque transmission mechanism 5a of the second aspect, the pressing plate 15 can reliably grip the side wall of the bathtub with a predetermined pressing force, and the pressing force of the pressing plate 15 is too strong. As a result, the same effect as that of the torque transmission handle 6 provided with the torque transmission mechanism 5 of the first aspect can be obtained.
　次に、図７を用いて、第３の態様のトルク伝達機構５ｃを備えたトルク伝達ハンドル６ｃについて説明する。図７には、第３の態様のトルク伝達機構５ｃを備えたトルク伝達ハンドル６ｃをボルト軸２の軸芯に沿って切り取った断面図が示されている。 Next, the torque transmission handle 6c provided with the torque transmission mechanism 5c of the third aspect will be described with reference to FIG. FIG. 7 shows a cross-sectional view of the torque transmission handle 6c provided with the torque transmission mechanism 5c of the third aspect, cut along the axis of the bolt shaft 2. As shown in FIG.
　第３の態様のトルク伝達機構５ｃは、第１の態様のトルク伝達機構５において、環状部材７のトルク伝達面７１がコイルバネ１０によってナット３のトルク伝受面８１を付勢していたもの（図４）を、トルク伝達面とトルク伝受面の配列を軸方向に入れ換えることにより、ナット３ｃと同調する環状部材８ｃに形成されたトルク伝受面が、コイルバネ１０によってノブ４のトルク伝達面７１ｃを付勢するように変更したものである。 The torque transmission mechanism 5c according to the third aspect is the torque transmission mechanism 5 according to the first aspect in which the torque transmission surface 71 of the annular member 7 urges the torque transmission surface 81 of the nut 3 by the coil spring 10 ( 4), the torque transmission surface formed on the annular member 8c that synchronizes with the nut 3c is replaced with the torque transmission surface of the knob 4 by the coil spring 10 by switching the arrangement of the torque transmission surface and the torque transmission surface in the axial direction. 71c is changed to be energized.
　図７を参照して理解されるように、第３の態様のトルク伝達機構５ｃを備えたトルク伝達ハンドル６ｃは、押圧板１５を支承するボルト軸２と、ボルト軸２と螺合するナット３ｃと、ナット３ｃに外装されるノブ４と、ナット３ｃとノブ４の間に配設されるトルク伝達機構５ｃから構成されている。 As can be understood with reference to FIG. 7, the torque transmission handle 6 c having the torque transmission mechanism 5 c of the third aspect includes a bolt shaft 2 that supports the pressing plate 15, and a nut 3 c that is screwed with the bolt shaft 2. And a knob 4 mounted on the nut 3 c, and a torque transmission mechanism 5 c disposed between the nut 3 c and the knob 4.
　ナット３ｃは、本体フレーム１１の垂直部１１１に設けられた貫通口へ挿通される胴部３１ｃと、該貫通口より大きく且つ胴部３１ｃから放射方向に延びたフランジ３２ｃを備えている。そしてナット３ｃの胴部３１ｃを貫通口へ挿通し、フランジ３２ｃが本体フレーム１１の垂直部１１１へ当接する側の反対側から、貫通口より大きな外径を有する固定リング９をネジ３３によってナット３ｃへネジ止めすることにより、ナット３ｃは本体フレーム１１の垂直部１１１へ回転自在に取り付けられている。 The nut 3c includes a barrel portion 31c that is inserted into a through-hole provided in the vertical portion 111 of the main body frame 11, and a flange 32c that is larger than the through-hole and extends in the radial direction from the barrel portion 31c. Then, the body 31c of the nut 3c is inserted into the through hole, and the fixing ring 9 having an outer diameter larger than that of the through hole is connected to the nut 3c by the screw 33 from the side opposite to the side where the flange 32c contacts the vertical part 111 of the main body frame 11. The nut 3c is rotatably attached to the vertical portion 111 of the main body frame 11 by being screwed.
　また、ナット３ｃは、樹脂製のワッシャー３４を介して本体フレーム１１の垂直部１１１へ取り付けられているので、ナット３ｃのガタ付きの少ない円滑な回転が強化されている。 Further, since the nut 3c is attached to the vertical portion 111 of the main body frame 11 via the resin washer 34, smooth rotation with little play of the nut 3c is reinforced.
　第３の態様のトルク伝達機構５ｃは、ノブ４の回転軸に対して直交する略円形のトルク伝達面７１ｃを備え且つノブ４へ着脱自在に装着されている第３の環状部材７ｃと、トルク伝達面７１ｃに当接し且つナット３ｃの回転軸に対して直交する略円形のトルク伝受面８１ｃを備えており、そしてナット３ｃの回転と同調し且つナット３ｃの回転軸に沿ってスライド可能に外装される環状部材８ｃと、環状部材８ｃのトルク伝受面８１ｃをノブ４のトルク伝達面７１ｃへ向けて付勢するコイルバネ１０を備えている。また、コイルバネ１０の端部は、ネジ３５によってナット３ｃの端部に装着されるストッパー３６によって固定されている。 The torque transmission mechanism 5c of the third aspect includes a third annular member 7c having a substantially circular torque transmission surface 71c orthogonal to the rotation axis of the knob 4 and detachably attached to the knob 4. A substantially circular torque transmission surface 81c that is in contact with the transmission surface 71c and orthogonal to the rotation axis of the nut 3c is provided, and is slidable along the rotation axis of the nut 3c in synchronization with the rotation of the nut 3c. An annular member 8c is provided, and a coil spring 10 that biases the torque transmission surface 81c of the annular member 8c toward the torque transmission surface 71c of the knob 4 is provided. Further, the end of the coil spring 10 is fixed by a stopper 36 attached to the end of the nut 3c with a screw 35.
　そしてトルク伝達面７１ｃおよびトルク伝受面８１ｃは、それぞれに伝達されるトルクが所定の値未満では、トルク伝達面７１ｃとトルク伝受面８１ｃとを相互に係止し、且つ伝達されるトルクが所定の値以上では、トルク伝達面７１ｃとトルク伝受面８１ｃとの間で滑りを生じさせる傾斜面を備えた凹部または凸部を含んでいる。 When the torque transmitted to each of the torque transmission surface 71c and the torque transmission surface 81c is less than a predetermined value, the torque transmission surface 71c and the torque transmission surface 81c are locked to each other, and the transmitted torque is Above a predetermined value, a concave portion or a convex portion having an inclined surface that causes slippage between the torque transmission surface 71c and the torque transmission surface 81c is included.
　図示しないが、ノブ４と第３の環状部材７ｃとの同調は、ノブ４の中に第３の環状部材７ｃを装着した時、ノブ４の内周面上に形成された複数の凹凸が、第３の環状部材７ｃの外周面上に形成された凹凸と嵌合することによって保証される。また、環状部材８ｃとナット３ｃとの同調は、ナット３ｃへ環状部材８ｃを装着した時、ナット３ｃの外周面上に形成された複数の凹凸が、環状部材８ｃの内周面上に形成された凹凸と嵌合することによって保証される。なお、各部品の同調は、図示しないが、第３の環状部材７ｃの内周面とナット３ｃの外周面に凹凸を設けることにより、第３の環状部材７ｃとナット３ｃとを同調させ、環状部材８ｃの外周面とノブ４の内周面に凹凸を設けることにより、環状部材８ｃとノブ４とを同調させる組み合せとしてもよい。 Although not shown, the tuning of the knob 4 and the third annular member 7c is such that when the third annular member 7c is mounted in the knob 4, a plurality of irregularities formed on the inner peripheral surface of the knob 4 are This is ensured by fitting with the unevenness formed on the outer peripheral surface of the third annular member 7c. Further, when the annular member 8c is mounted on the nut 3c, a plurality of irregularities formed on the outer peripheral surface of the nut 3c are formed on the inner peripheral surface of the annular member 8c. Guaranteed by mating with uneven surface. Although not shown in the figure, each component is synchronized with the third annular member 7c and the nut 3c by providing irregularities on the inner peripheral surface of the third annular member 7c and the outer peripheral surface of the nut 3c. It is good also as a combination which synchronizes the annular member 8c and the knob 4 by providing an unevenness | corrugation in the outer peripheral surface of the member 8c, and the inner peripheral surface of the knob 4. FIG.
　図７に示されているように、第３の態様のトルク伝達機構５ｃでは、トルク伝達面７１ｃの中心およびトルク伝受面８１ｃの中心は、共通するノブ４およびナット３ｃの回転軸上に配置されている。また、トルク伝達面７１ｃ上およびトルク伝受面８１ｃ上には、それぞれにトルク伝達面７１ｃまたはトルク伝受面８１ｃから傾斜した斜面を含む凹部／凸部が形成されている。トルク伝達面７１ｃの傾斜面およびトルク伝受面８１ｃの傾斜面は、押圧板１５が浴槽の側壁へ向かって前進するようにノブ４を回す時、互いに対向する相手側の傾斜面を昇るように勾配が付けられている。そしてトルク伝受面８１ｃを有する環状部材８ｃは、ノブ４の内周面とナット３ｃの外周面との間でナット３ｃの回転軸に沿ってスライド可能に装着されており、且つコイルバネ１０によってトルク伝達面７１ｃに向けて付勢されている。 As shown in FIG. 7, in the torque transmission mechanism 5c of the third aspect, the center of the torque transmission surface 71c and the center of the torque transmission surface 81c are arranged on the common rotary shaft of the knob 4 and the nut 3c. Has been. Further, on the torque transmission surface 71c and the torque transmission surface 81c, a concave / convex portion including a slope inclined from the torque transmission surface 71c or the torque transmission surface 81c is formed. The inclined surface of the torque transmitting surface 71c and the inclined surface of the torque transmitting surface 81c are arranged so that the opposing inclined surface facing each other rises when the knob 4 is turned so that the pressing plate 15 advances toward the side wall of the bathtub. There is a gradient. The annular member 8c having the torque transmission surface 81c is mounted so as to be slidable along the rotation axis of the nut 3c between the inner peripheral surface of the knob 4 and the outer peripheral surface of the nut 3c. It is biased toward the transmission surface 71c.
　このため、トルク伝達面７１ｃの傾斜面とトルク伝受面８１ｃの傾斜面との間には常に一定の摩擦力が生じている。そして、ノブ４からナット３ｃへ伝達されるトルクが所定の値未満である時、トルク伝受面８１ｃの傾斜面はトルク伝達面７１ｃの傾斜面を乗り越えることができず、互いに噛み合った状態で係合している。そして、この係合によりノブ４のトルクがナット３ｃへ伝達され、該ナット３ｃと螺合しているボルト軸２が螺進退される。 Therefore, a constant frictional force is always generated between the inclined surface of the torque transmission surface 71c and the inclined surface of the torque transmission surface 81c. When the torque transmitted from the knob 4 to the nut 3c is less than a predetermined value, the inclined surface of the torque transmitting surface 81c cannot get over the inclined surface of the torque transmitting surface 71c and is engaged in a state of being engaged with each other. Match. Then, the torque of the knob 4 is transmitted to the nut 3c by this engagement, and the bolt shaft 2 screwed with the nut 3c is screwed back and forth.
　一方、ノブ４からナット３ｃへ伝達されるトルクが所定の値以上になると、トルク伝受面８１ｃの傾斜面はトルク伝達面７１ｃの傾斜面との間に滑りが生じる。その結果、トルク伝受面８１ｃを有する環状部材８ｃはコイルバネ１０に抗して後退し、トルク伝受面８１ｃの傾斜面がトルク伝達面７１ｃの傾斜面を乗り越えることによって両者７１ｃ，８１ｃの係合が解除される。そのため、この状態でノブ４を回してもノブ４はナット３ｃの周りで空回りするのみであり、ノブ４からナット３ｃへトルクが伝達されることはない。 On the other hand, when the torque transmitted from the knob 4 to the nut 3c exceeds a predetermined value, the inclined surface of the torque transmitting surface 81c slips between the inclined surface of the torque transmitting surface 71c. As a result, the annular member 8c having the torque transmission surface 81c moves backward against the coil spring 10, and the inclined surface of the torque transmission surface 81c gets over the inclined surface of the torque transmission surface 71c, thereby engaging the both 71c and 81c. Is released. Therefore, even if the knob 4 is rotated in this state, the knob 4 only idles around the nut 3c, and torque is not transmitted from the knob 4 to the nut 3c.
　また、図示しないが、トルク伝達面７１ｃの傾斜面の後端にはトルク伝達面７１ｃに略直交する垂直面が形成されており、トルク伝受面８１ｃの傾斜面の後端にはトルク伝受面８１ｃに略直交する垂直面が形成されている。トルク伝達面７１ｃの垂直面とトルク伝受面８１ｃの垂直面は、押圧板１５が浴槽の側壁から後退するようにノブ４を回した時、互いに当接し係合する。そのため、押圧板１５が浴槽の側壁から後退するようにノブ４を回す時は、伝達されるトルクの大きさに拠らず、常にノブ４とナット３ｃは同調して回転する。 Although not shown, a vertical surface substantially orthogonal to the torque transmission surface 71c is formed at the rear end of the inclined surface of the torque transmission surface 71c, and torque transmission is performed at the rear end of the inclined surface of the torque transmission surface 81c. A vertical surface substantially orthogonal to the surface 81c is formed. The vertical surface of the torque transmission surface 71c and the vertical surface of the torque transmission surface 81c are brought into contact with each other when the knob 4 is turned so that the pressing plate 15 is retracted from the side wall of the bathtub. Therefore, when the knob 4 is turned so that the pressing plate 15 moves backward from the side wall of the bathtub, the knob 4 and the nut 3c always rotate in synchronism regardless of the magnitude of the transmitted torque.
　このように、第３の態様のトルク伝達機構５ｃは、ナット３ｃの回転軸に対して直交するナット３ｃの端面をトルク伝受面８１ｃとして利用するものであるが、ノブ４からナット３ｃへのトルクを確実に伝受または遮断することができる。なぜなら、第３の態様のトルク伝達機構５ｃでは、ナット３ｃに設けられるトルク伝受面８１ｃを、ナット３ｃの外周面にスライド可能に配設された環状部材８ｃに形成したことにより、本来のナット３ｃの端面よりより一層大きな面積を有するトルク伝受面８１ｃをナット３ｃの外周面に設けることができたからである。 As described above, the torque transmission mechanism 5c according to the third aspect uses the end surface of the nut 3c orthogonal to the rotation axis of the nut 3c as the torque transmission surface 81c, but from the knob 4 to the nut 3c. Torque can be reliably transmitted or cut off. This is because in the torque transmission mechanism 5c of the third aspect, the torque transmission surface 81c provided on the nut 3c is formed on the annular member 8c slidably disposed on the outer peripheral surface of the nut 3c, so that the original nut This is because the torque transmitting surface 81c having a larger area than the end surface of 3c can be provided on the outer peripheral surface of the nut 3c.
　なお、詳述しないが、第３の態様のトルク伝達機構５ｃを備えたトルク伝達ハンドル６ｃにおいて、ノブ４の中に室４２及びフランジ部４１を設けたことにより、押圧板１５を螺進退させるボルト軸２の露出が防止され、ナット３ｃを回動させるノブ４が本体フレーム１１から外方へ突出する長さが抑制される効果は、第１の態様のトルク伝達機構５を備えたトルク伝達ハンドル６の場合と同じ効果が得られる。 Although not described in detail, in the torque transmission handle 6c provided with the torque transmission mechanism 5c of the third mode, the chamber 42 and the flange portion 41 are provided in the knob 4 so that the pressing plate 15 is screwed back and forth. The effect of preventing the shaft 2 from being exposed and suppressing the length of the knob 4 that rotates the nut 3c to protrude outward from the main body frame 11 is the torque transmission handle provided with the torque transmission mechanism 5 of the first aspect. The same effect as in the case of 6 can be obtained.
　また、第３の態様のトルク伝達機構５ｃを設けたことにより、押圧板１５は、所定の押付け力で浴槽の側壁を確実にグリップすることができ、そして押圧板１５の押付け力が強過ぎることによって浴槽の側壁を破壊することも防止される効果も、第１の態様のトルク伝達機構５を備えたトルク伝達ハンドル６の場合と同じ効果が得られる。 Moreover, by providing the torque transmission mechanism 5c of the third aspect, the pressing plate 15 can reliably grip the side wall of the bathtub with a predetermined pressing force, and the pressing force of the pressing plate 15 is too strong. As a result, the same effect as that of the torque transmission handle 6 provided with the torque transmission mechanism 5 of the first aspect can be obtained.
　次に、図８ａ～図１１ｂを用いて、第４の態様のトルク伝達機構５ｂを備えたトルク伝達ハンドル６ｂについて説明する。図８ａには、第４の態様のトルク伝達機構５ｂを備えたトルク伝達ハンドル６ｂをボルト軸２の軸芯に沿って切り取った断面図が示されている。また、図８ｂには、図８ａに示されるトルク伝達ハンドル６ｂをＸ－Ｘ断面で切り取った断面図が示されている。 Next, the torque transmission handle 6b including the torque transmission mechanism 5b according to the fourth aspect will be described with reference to FIGS. 8a to 11b. FIG. 8 a shows a cross-sectional view of the torque transmission handle 6 b provided with the torque transmission mechanism 5 b of the fourth mode, taken along the axis of the bolt shaft 2. FIG. 8b shows a cross-sectional view of the torque transmission handle 6b shown in FIG.
　図９には、図８ａ，８ｂに示されるトルク伝達ハンドル６ｂの分解した状態が模式的に示されている。 FIG. 9 schematically shows an exploded state of the torque transmission handle 6b shown in FIGS. 8a and 8b.
　図１０ａには、第４の態様のトルク伝達機構５ｂで使用されるナット３ｂの斜視図が示されている。また、図１０ｂには、図１０ａに示されるナット３ｂをＡ－Ａ断面で切り取った断面図が示されている。 FIG. 10a shows a perspective view of the nut 3b used in the torque transmission mechanism 5b of the fourth mode. FIG. 10b shows a cross-sectional view of the nut 3b shown in FIG.
　図１１ａには、第４の態様のトルク伝達機構５ｂで使用され、ノブ４ｂの内周面へ嵌合される筒状部材７ｂが示されている。また、図１１ｂには、図１１ａに示される筒状部材７ｂの端面図が示されている。 FIG. 11a shows a cylindrical member 7b used in the torque transmission mechanism 5b of the fourth aspect and fitted to the inner peripheral surface of the knob 4b. FIG. 11b shows an end view of the cylindrical member 7b shown in FIG. 11a.
　第４の態様のトルク伝達機構５ｂは、トルク伝達面７１，７１ａ，７１ｃおよびトルク伝受面８１，８１ａ，８１ｃがノブ４およびナット３，３ａ，３ｃの回転軸に対して直交するように配置された第１～第３の態様のトルク伝達機構５，５ａ，５ｃとは大きく異なる。第４の態様のトルク伝達機構５ｂでは、トルク伝達面はノブ４ｂの内周面上に設けられ（以下、「トルク伝達内周面７１ｂ」という）、トルク伝受面はナット３ｂの外周面上に設けられる（以下、「トルク伝受外周面８１ｂ」という）。また、第４の態様のトルク伝達機構５ｂでは、第１～第３の態様のトルク伝達機構５，５ａ，５ｃの環状部材７，７ａ，７ｃは、ナット３ｂの外周面上に形成されたキー溝３８ｂの中に、ナット３ｂの回転軸に対して放射方向に移動可能なキー８ｂとして置換されている。 The torque transmission mechanism 5b of the fourth aspect is arranged such that the torque transmission surfaces 71, 71a, 71c and the torque transmission surfaces 81, 81a, 81c are orthogonal to the rotation axes of the knob 4 and the nuts 3, 3a, 3c. This is greatly different from the torque transmission mechanisms 5, 5a, 5c of the first to third modes. In the torque transmission mechanism 5b of the fourth aspect, the torque transmission surface is provided on the inner peripheral surface of the knob 4b (hereinafter referred to as “torque transmission inner peripheral surface 71b”), and the torque transmission surface is on the outer peripheral surface of the nut 3b. (Hereinafter referred to as “torque transmission outer peripheral surface 81b”). In the torque transmission mechanism 5b according to the fourth aspect, the annular members 7, 7a, 7c of the torque transmission mechanisms 5, 5a, 5c according to the first to third aspects are formed on the outer peripheral surface of the nut 3b. The groove 38b is replaced with a key 8b that is movable in the radial direction with respect to the rotation axis of the nut 3b.
　図８ａ及び図９を参照して理解されるように、第４の態様のトルク伝達機構５ｂを備えたトルク伝達ハンドル６ｂは、押圧板１５を支承するボルト軸２と、ボルト軸２と螺合するナット３ｂと、ナット３ｂに外装されるノブ４ｂと、ナット３ｂとノブ４ｂの間に配設されるトルク伝達機構５ｂから構成されている。 As can be understood with reference to FIGS. 8 a and 9, the torque transmission handle 6 b including the torque transmission mechanism 5 b according to the fourth aspect includes the bolt shaft 2 that supports the pressing plate 15, and the bolt shaft 2. A nut 3b, a knob 4b externally mounted on the nut 3b, and a torque transmission mechanism 5b disposed between the nut 3b and the knob 4b.
　ナット３ｂは、本体フレーム１１の垂直部１１１に設けられた貫通口へ挿通される胴部３１ｂと、該貫通口より大きく且つ胴部３１ｂから放射方向に延びたフランジ３２ｂを備えている。そしてナット３ｂの胴部３１ｂを貫通口へ挿通し、フランジ３２ｂが本体フレーム１１の垂直部１１１へ当接する側の反対側から、貫通口より大きな外径を有する固定リング９をネジ３３によってナット３ｂへネジ止めすることにより、ナット３ｂは本体フレーム１１の垂直部１１１へ回転自在に取り付けられている。 The nut 3b includes a trunk portion 31b that is inserted into a through-hole provided in the vertical portion 111 of the main body frame 11, and a flange 32b that is larger than the through-hole and extends in a radial direction from the trunk portion 31b. Then, the body 31b of the nut 3b is inserted into the through hole, and the fixing ring 9 having an outer diameter larger than that of the through hole is attached to the nut 3b by the screw 33 from the side opposite to the side where the flange 32b contacts the vertical part 111 of the main body frame 11. The nut 3 b is rotatably attached to the vertical portion 111 of the main body frame 11 by screwing to the main frame 11.
　また、ナット３ｂは、樹脂製のワッシャー３４を介して本体フレーム１１の垂直部１１１へ取り付けられているので、ナット３ｂのガタ付きの少ない円滑な回転が強化されている。 Further, since the nut 3b is attached to the vertical portion 111 of the main body frame 11 via the resin washer 34, smooth rotation with little play of the nut 3b is reinforced.
　第４の態様のトルク伝達機構５ｂは、ノブ４ｂの回転軸に対して平行な略円筒形のトルク伝達内周面７１ｂを備え且つノブ４ｂの内周面へ着脱自在に嵌合されている筒状部材７ｂと、トルク伝達内周面７１ｂに摺接し且つナット３ｂの回転軸に対して平行に配設される略円筒形の外周面３９ｂと、外周面３９ｂ上であってナット３ｂの回転軸に対して平行に配設されたキー溝３８ｂと、トルク伝達内周面７１ｂに当接するトルク伝受外周面８１ｂを備えており且つナット３ｂの回転軸に対して放射方向に移動可能にキー溝３８ｂの中に配置されたキー８ｂと、そしてキー８ｂのトルク伝受外周面８１ｂをノブ４ｂのトルク伝達内周面７１ｂへ向けて付勢するコイルバネ１０ｂを備えている。 The torque transmission mechanism 5b of the fourth aspect includes a substantially cylindrical torque transmission inner peripheral surface 71b parallel to the rotation axis of the knob 4b, and a cylinder that is detachably fitted to the inner peripheral surface of the knob 4b. A cylindrical member 7b, a substantially cylindrical outer peripheral surface 39b that is slidably in contact with the torque transmission inner peripheral surface 71b and parallel to the rotational axis of the nut 3b, and a rotational shaft of the nut 3b on the outer peripheral surface 39b. A key groove 38b disposed in parallel with the torque transmission inner peripheral surface 71b and a torque transmission outer peripheral surface 81b that is in contact with the torque transmission inner peripheral surface 71b, and is movable in the radial direction with respect to the rotation shaft of the nut 3b. And a coil spring 10b for urging the torque transmission outer peripheral surface 81b of the key 8b toward the torque transmission inner peripheral surface 71b of the knob 4b.
　そしてトルク伝達内周面７１ｂおよびキー８ｂのトルク伝受外周面８１ｂは、それぞれに伝達されるトルクが所定の値未満では、トルク伝達内周面７１ｂとトルク伝受外周面８１ｂとを相互に係止し、且つ伝達されるトルクが所定の値以上では、トルク伝達内周面７１ｂとトルク伝受外周面８１ｂとの間で滑りを生じさせる傾斜面を備えた凹部または凸部７１１ｂ，８１１ｂを含んでいる（図１０ａ，１０ｂ及び図１１ａ，１１ｂ参照）。 The torque transmission inner peripheral surface 71b and the torque transmission outer peripheral surface 81b of the key 8b are connected to each other when the torque transmitted to each of them is less than a predetermined value. If the torque to be transmitted and the transmitted torque is equal to or greater than a predetermined value, the concave portion or the convex portion 711b, 811b having an inclined surface that causes slippage between the torque transmission inner peripheral surface 71b and the torque transmission outer peripheral surface 81b are included. (See FIGS. 10a and 10b and FIGS. 11a and 11b).
　図８ｂ及び図１１ａ，１１ｂに示されているように、ノブ４ｂと筒状部材７ｂとの同調は、ノブ４ｂの中に筒状部材７ｂを装着した時、ノブ４ｂの内周面上に形成された複数の凹凸（図示せず）が、筒状部材７ｂの外周面上に形成された凹凸７２ｂと嵌合することによって保証される。 As shown in FIGS. 8b and 11a and 11b, the tuning of the knob 4b and the cylindrical member 7b is formed on the inner peripheral surface of the knob 4b when the cylindrical member 7b is mounted in the knob 4b. The plurality of irregularities (not shown) formed is ensured by fitting with the irregularities 72b formed on the outer peripheral surface of the cylindrical member 7b.
　図８ａ，８ｂに示されているように、第４の態様のトルク伝達機構５ｂでは、トルク伝達内周面７１ｂの回転軸およびトルク伝受外周面８１ｂの回転軸は、共通するノブ４ｂおよびナット３ｂの回転軸上に配置されている。また、ノブ４ｂのトルク伝達内周面７１ｂ上には、円筒状のトルク伝達内周面７１ｂからさらに内側に傾斜した斜面を含む凹部／凸部７１１ｂが形成されている。一方、ナット３ｂのトルク伝受外周面８１ｂ上には、ナット３ｂの回転軸に対して平行に配設されたキー溝３８ｂが形成されており、そしてキー溝３８ｂの中には、ナット３ｂの回転軸に対して放射方向に移動可能なキー８ｂが配置されている。キー８ｂのトルク伝受外周面８１ｂ上には傾斜面を含む凹部／凸部８１１ｂが形成されており、キー８ｂはコイルバネ１０ｂによってトルク伝達内周面７１ｂに向けて付勢されている。 As shown in FIGS. 8a and 8b, in the torque transmission mechanism 5b of the fourth mode, the rotation shaft of the torque transmission inner peripheral surface 71b and the rotation shaft of the torque transmission outer peripheral surface 81b are the same knob 4b and nut. It is arrange | positioned on the rotating shaft of 3b. Further, on the torque transmission inner peripheral surface 71b of the knob 4b, a concave / convex portion 711b including a slope inclined further inward from the cylindrical torque transmission inner peripheral surface 71b is formed. On the other hand, on the torque transmission outer peripheral surface 81b of the nut 3b, there is formed a key groove 38b disposed in parallel to the rotation axis of the nut 3b. In the key groove 38b, the nut 3b A key 8b that is movable in the radial direction with respect to the rotation axis is arranged. A concave / convex portion 811b including an inclined surface is formed on the torque transmission outer peripheral surface 81b of the key 8b, and the key 8b is urged toward the torque transmission inner peripheral surface 71b by the coil spring 10b.
　このため、トルク伝達内周面７１ｂの傾斜面と、キー８ｂのトルク伝受外周面８１ｂの傾斜面との間には常に一定の摩擦力が生じている。そして、ノブ４ｂからナット３ｂへ伝達されるトルクが所定の値未満である時、キー８ｂのトルク伝受外周面８１ｂの傾斜面はノブ４ｂのトルク伝達内周面７１ｂの傾斜面を乗り越えることができず、互いに噛み合った状態で係合している。そして、この係合によりノブ４ｂのトルクがナット３ｂへ伝達され、該ナット３ｂと螺合しているボルト軸２が螺進退される。 Therefore, a constant frictional force is always generated between the inclined surface of the torque transmission inner peripheral surface 71b and the inclined surface of the torque transmission outer peripheral surface 81b of the key 8b. When the torque transmitted from the knob 4b to the nut 3b is less than a predetermined value, the inclined surface of the torque transmission outer peripheral surface 81b of the key 8b may get over the inclined surface of the torque transmission inner peripheral surface 71b of the knob 4b. It is not possible to engage with each other while meshing with each other. Then, the torque of the knob 4b is transmitted to the nut 3b by this engagement, and the bolt shaft 2 screwed with the nut 3b is screwed back and forth.
　一方、ノブ４ｂからナット３ｂへ伝達されるトルクが所定の値以上になると、キー８ｂのトルク伝受外周面８１ｂの傾斜面はノブ４ｂのトルク伝達内周面７１ｂの傾斜面との間に滑りが生じる。その結果、傾斜面を有するキー８ｂはコイルバネ１０ｂに抗して後退し、キー８ｂのトルク伝受外周面８１ｂの傾斜面がノブ４ｂのトルク伝達内周面７１ｂの傾斜面を乗り越えることによって両者７１ｂ，８１ｂの係合が解除される。そのため、この状態でノブ４ｂを回してもノブ４ｂはナット３ｂの周りで空回りするのみであり、ノブ４ｂからナット３ｂへトルクが伝達されることはない。 On the other hand, when the torque transmitted from the knob 4b to the nut 3b exceeds a predetermined value, the inclined surface of the torque transmitting outer peripheral surface 81b of the key 8b slips between the inclined surface of the torque transmitting inner peripheral surface 71b of the knob 4b. Occurs. As a result, the key 8b having the inclined surface retreats against the coil spring 10b, and the inclined surface of the torque transmission outer peripheral surface 81b of the key 8b gets over the inclined surface of the torque transmission inner peripheral surface 71b of the knob 4b, thereby both 71b. , 81b are disengaged. Therefore, even if the knob 4b is rotated in this state, the knob 4b only rotates around the nut 3b, and torque is not transmitted from the knob 4b to the nut 3b.
　また、図１０ａ及び図１１ａを参照して理解されるように、ノブ４ｂのトルク伝達内周面７１ｂの傾斜面の後端にはトルク伝達内周面７１ｂに略直交する垂直面７１２ｂが形成されている。また、キー８ｂの幅方向の断面は略台形の形状を呈しているので、キー８ｂのトルク伝受外周面８１ｂの傾斜面の後端にはキー８ｂの傾斜面に略直交する垂直面８１２ｂが形成されている。ノブ４ｂのトルク伝達内周面７１ｂの垂直面７１２ｂとキー８ｂのトルク伝受外周面８１ｂの垂直面８１２ｂは、押圧板１５が浴槽の側壁から後退するようにノブ４ｂを回した時、互いに当接し係合する。そのため、押圧板１５が浴槽の側壁から後退するようにノブ４ｂを回す時は、伝達されるトルクの大きさに拠らず、常にノブ４ｂとナット３ｂは同調して回転する。 Further, as understood with reference to FIGS. 10a and 11a, a vertical surface 712b substantially orthogonal to the torque transmission inner peripheral surface 71b is formed at the rear end of the inclined surface of the torque transmission inner peripheral surface 71b of the knob 4b. ing. Further, since the cross-section in the width direction of the key 8b has a substantially trapezoidal shape, a vertical surface 812b substantially orthogonal to the inclined surface of the key 8b is formed at the rear end of the inclined surface of the torque transmitting outer peripheral surface 81b of the key 8b. Is formed. The vertical surface 712b of the torque transmission inner peripheral surface 71b of the knob 4b and the vertical surface 812b of the torque transmission outer peripheral surface 81b of the key 8b contact each other when the knob 4b is rotated so that the pressing plate 15 is retracted from the side wall of the bathtub. Engage and engage. Therefore, when the knob 4b is turned so that the pressing plate 15 moves backward from the side wall of the bathtub, the knob 4b and the nut 3b always rotate in synchronism regardless of the magnitude of the transmitted torque.
　このように、第４の態様のトルク伝達機構５ｂは、ナット３ｂの回転軸に対して平行に配設される略円筒形の外周面３９ｂをトルク伝受外周面８１ｂとして利用するものであるが、ノブ４ｂからナット３ｂへのトルクを確実に伝受または遮断することができる。なぜなら、第４の態様のトルク伝達機構５ｂでは、ナット３ｂから独立したキー８ｂの外周面上に傾斜面を形成し、該キー８ｂをナット３ｂの外周面３９ｂ上に設けたキー溝３８ｂの中に配置したので、ノブ４ｂの内周面とナット３ｂの外周面３９ｂが近接している場合においても、ナット３ｂの回転軸に対し放射方向に移動して係合／解除可能な傾斜面をナット３ｂの外周面３９ｂに設けることができたからである。 As described above, the torque transmission mechanism 5b according to the fourth aspect uses the substantially cylindrical outer peripheral surface 39b disposed in parallel to the rotation axis of the nut 3b as the torque transmission outer peripheral surface 81b. The torque from the knob 4b to the nut 3b can be reliably transmitted or cut off. This is because in the torque transmission mechanism 5b of the fourth aspect, an inclined surface is formed on the outer peripheral surface of the key 8b independent from the nut 3b, and the key 8b is placed in the key groove 38b provided on the outer peripheral surface 39b of the nut 3b. Therefore, even when the inner peripheral surface of the knob 4b and the outer peripheral surface 39b of the nut 3b are close to each other, the inclined surface that can be engaged / released in the radial direction with respect to the rotation axis of the nut 3b This is because it could be provided on the outer peripheral surface 39b of 3b.
　なお、詳述しないが、第４の態様のトルク伝達機構５ｂを備えたトルク伝達ハンドル６ｂにおいて、ノブ４ｂの中に室４２ｂ及びフランジ部４１ｂを設けたことにより、押圧板１５を螺進退させるボルト軸２の露出が防止され、ナット３ｂを回動させるノブ４ｂが本体フレーム１１から外方へ突出する長さが抑制される効果は、第１の態様のトルク伝達機構５を備えたトルク伝達ハンドル６の場合と同じ効果が得られる。 Although not described in detail, in the torque transmission handle 6b provided with the torque transmission mechanism 5b of the fourth aspect, a bolt for screwing the pressing plate 15 back and forth by providing the chamber 42b and the flange portion 41b in the knob 4b. The effect of preventing the shaft 2 from being exposed and suppressing the length of the knob 4b that rotates the nut 3b outward from the main body frame 11 is that the torque transmission handle provided with the torque transmission mechanism 5 of the first aspect. The same effect as in the case of 6 can be obtained.
　また、第４の態様のトルク伝達機構５ｂを設けたことにより、押圧板１５は、所定の押付け力で浴槽の側壁を確実にグリップすることができ、そして押圧板１５の押付け力が強過ぎることによって浴槽の側壁を破壊することも防止される効果も、第１の態様のトルク伝達機構５を備えたトルク伝達ハンドル６の場合と同じ効果が得られる。さらに、第４の態様のトルク伝達機構５ｂでは、図示しないが、筒状部材７ｂの内周面上にキー溝およびトルク伝達内周面を備えたキーを配設し、ナット３ｂの外周面上に外側に傾斜した斜面を含む凹部／凸部を備えたトルク伝受外周面を形成することによっても、図８ａ～図１１ｂに示される第４の態様のトルク伝達機構５ｂと同じ機能を発揮し、同じ効果が得られる。 Further, by providing the torque transmission mechanism 5b of the fourth aspect, the pressing plate 15 can surely grip the side wall of the bathtub with a predetermined pressing force, and the pressing force of the pressing plate 15 is too strong. As a result, the same effect as that of the torque transmission handle 6 provided with the torque transmission mechanism 5 of the first aspect can be obtained. Further, in the torque transmission mechanism 5b of the fourth aspect, although not shown, a key having a key groove and a torque transmission inner peripheral surface is disposed on the inner peripheral surface of the cylindrical member 7b, and the nut 3b is provided on the outer peripheral surface. By forming a torque transmitting / receiving outer peripheral surface having a concave / convex portion including a slope inclined outward, the same function as the torque transmission mechanism 5b of the fourth mode shown in FIGS. 8a to 11b is exhibited. The same effect can be obtained.
　第１～第４の態様のトルク伝達機構５，５ａ，５ｃ，５ｂでは、ナット３，３ａ，３ｃ，３ｂまたはナットに固定された部品８，３６に係合孔（図示せず）を設け、そしてノブ４，４ｂには、該係合孔と連通することができる貫通孔４３（図１参照）が設けられている。 In the torque transmission mechanisms 5, 5 a, 5 c, 5 b of the first to fourth aspects, engagement holes (not shown) are provided in the nuts 3, 3 a, 3 c, 3 b or the parts 8, 36 fixed to the nuts, The knobs 4 and 4b are provided with through holes 43 (see FIG. 1) that can communicate with the engagement holes.
　本実施例のトルク伝達機構５，５ａ，５ｃ，５ｂは、押圧板１５が浴槽の側壁から後退するようにノブ４，４ｂを回す時は、伝達されるトルクの大きさに拠らず、常にノブ４，４ｂとナット３，３ａ，３ｃ，３ｂは同調して回転するように設計されている。このため、使用者が不注意等で、押圧板１５が本体フレーム１１の垂直部１１１と当接した後もノブ４，４ｂを過剰に回してしまうと、ナット３，３ａ，３ｃ，３ｂと、軸方向に引張り応力が生じたボルト軸２との間で大きな摩擦力を生じることがある。ところが、本実施例のトルク伝達機構５，５ａ，５ｃ，５ｂでは、伝達されるトルクが所定の値以上となるとトルクの伝達が遮断されるので、前記摩擦力が過大であると、ノブ４，４ｂを回してもノブ４，４ｂはナット３，３ａ，３ｃ，３ｂの周りで空回りするのみで、押圧板１５を支承したボルト軸２を前進させることができなくなる場合がある。 The torque transmission mechanisms 5, 5 a, 5 c, 5 b of the present embodiment are always independent of the magnitude of the transmitted torque when turning the knobs 4, 4 b so that the pressing plate 15 is retracted from the side wall of the bathtub. The knobs 4, 4b and the nuts 3, 3a, 3c, 3b are designed to rotate synchronously. Therefore, if the knobs 4 and 4b are excessively turned even after the pressing plate 15 contacts the vertical portion 111 of the main body frame 11 due to carelessness of the user, the nuts 3, 3a, 3c, 3b, A large frictional force may be generated between the bolt shaft 2 in which a tensile stress is generated in the axial direction. However, in the torque transmission mechanisms 5, 5 a, 5 c, 5 b of the present embodiment, the torque transmission is interrupted when the transmitted torque exceeds a predetermined value. Therefore, if the frictional force is excessive, the knob 4, Even if the knob 4b is turned, the knobs 4 and 4b are merely idle around the nuts 3, 3a, 3c and 3b, and the bolt shaft 2 supporting the pressing plate 15 may not be able to advance.
　そのため、本実施例のトルク伝達機構５，５ａ，５ｃ，５ｂでは、ナット３，３ａ，３ｃ，３ｂまたはナットに固定された部品８，３６に係合孔を設け、そしてノブ４，４ｂには、該係合孔と連通することができる貫通孔４３を設けることにより、押圧板１５を前進させることができなくなった時、ノブ４，４ｂの貫通孔４３からナット３，３ａ，３ｃ，３ｂまたはナットに固定された部品８，３６の係合孔へ連結ピンなどの棒状部品（図示せず）を差し込んで一時的にノブ４，４ｂとナット３，３ａ，３ｃ，３ｂを連結できるようにし、ノブ４，４ｂとナット３，３ａ，３ｃ，３ｂの同調を保証することによって上記の問題を解決している。 Therefore, in the torque transmission mechanisms 5, 5a, 5c, 5b of the present embodiment, the nuts 3, 3a, 3c, 3b or the parts 8, 36 fixed to the nuts are provided with engagement holes, and the knobs 4, 4b are provided. When the pressing plate 15 cannot be moved forward by providing the through hole 43 that can communicate with the engagement hole, the nut 3, 3a, 3c, 3b or the A rod-shaped part (not shown) such as a connecting pin is inserted into the engaging holes of the parts 8 and 36 fixed to the nut so that the knobs 4 and 4b and the nuts 3 and 3a, 3c and 3b can be temporarily connected. The above problem is solved by guaranteeing the synchronization of the knobs 4, 4b and the nuts 3, 3a, 3c, 3b.
　１　・・・・・・　浴槽用手摺り
　２　・・・・・・　ボルト軸
　３，３ａ，３ｂ，３ｃ・・ナット
　４，４ｂ・・・・　ノブ
　４２，４２ｂ・・　室
　４３・・・・・・　貫通孔
　５，５ａ，５ｂ，５ｃ・・トルク伝達機構
　６，６ａ，６ｂ，６ｃ・・トルク伝達ハンドル
　７，７ａ，８ｃ・・環状部材
　７ｃ・・・・・・　第３の環状部材
　７ｂ・・・・・・　筒状部材
　７１，７１ａ，７１ｃ・・トルク伝達面
　７１ｂ・・・・・　トルク伝達内周面
　８，８ａ・・・・　第２の環状部材
　８ｂ・・・・・・　キー
　８１，８１ａ，８１ｃ・・トルク伝受面
　８１ｂ・・・・・　トルク伝受外周面
　９　・・・・・・　固定リング
　１０，１０ｂ・・　コイルバネ
　１０ａ・・・・・　皿バネ
　１１・・・・・・　本体フレーム
　１１１・・・・・　垂直部
　１１２・・・・・　水平部
　１１３，１１４・・化粧カバー
　１２・・・・・・　可動フレーム
　１３・・・・・・　上部グリップ
　１４・・・・・・　側部グリップ
　１５，１６・・・　押圧板
　３３，３５・・・　ネジ
　３４・・・・・・　樹脂製ワッシャー 1 ········· Handrail for bathtub 2 ······ Bolt shaft 3, 3a, 3b, 3c ··· Nuts 4, 4b ··· Knob 42, 42b · · · Chamber 43 ··· · Through holes 5, 5a, 5b, 5c · · Torque transmission mechanism 6, 6a, 6b, 6c · · Torque transmission handle 7, 7a, 8c · · Ring member 7c · · · Third ring member 7b · · · ··· Cylindrical members 71, 71a, 71c ··· Torque transmission surface 71b ··· Torque transmission inner peripheral surface 8, 8a ········· Second ring member 8b ··· Key 81 , 81a, 81c ··· Torque transmission surface 81b ··· Torque transmission outer peripheral surface 9 ···· Fixed ring 10, 10b ··· Coil spring 10a · · · Belleville spring 11 ···・ Body frame 111 ... Vertical part 112 ... Horizontal part 113,1 14 .. Cosmetic cover 12 .... Movable frame 13 .... Upper grip 14 .... Side grip 15, 16, ... Press plate 33, 35 ... Screw 34. ... Resin washers

Claims (14)

  1. 　少なくとも浴槽側壁の側面と略平行に配置される垂直部を備えており、そして浴槽側壁に配置される本体フレームと、
    　前記本体フレームを浴槽側壁へ固定するために該浴槽側壁を押し付ける押圧板と、そして
    　前記押圧板を前記本体フレームに対し螺進退させるためのトルク伝達ハンドルと、からなる浴槽用手摺りにおいて、
    　前記トルク伝達ハンドルは、
    　前記押圧板を支承するボルト軸と、
    　前記ボルト軸と螺合し、且つ前記本体フレームの前記垂直部に回転自在に取り付けられるナットと、
    　前記ナットに対し回動自在に外装されるノブであって、該ノブの内部には、前記押圧板を最も前記本体フレームの垂直部へ近づけた時、前記本体フレームの垂直部の反対側で、該垂直部から外方へ向けて突出した前記ボルト軸を収容するための室が設けられている前記ノブと、そして
    　伝達されるトルクが所定の値未満では、前記ノブから前記ナットへトルクを伝達し、且つ伝達されるトルクが所定の値以上では、前記ノブから前記ナットへのトルクの伝達を遮断するトルク伝達機構と、を備えていることを特徴とする浴槽用手摺り。     A body frame that includes at least a vertical portion disposed substantially parallel to a side surface of the bathtub side wall, and is disposed on the bathtub side wall;
    In a handrail for a bathtub, comprising: a pressing plate for pressing the bathtub side wall to fix the main body frame to the bathtub side wall; and a torque transmission handle for screwing the pressing plate back and forth with respect to the main body frame.
    The torque transmission handle is
    A bolt shaft for supporting the pressing plate;
    A nut threadably engaged with the bolt shaft and rotatably attached to the vertical portion of the main body frame;
    A knob that is rotatably mounted on the nut, and inside the knob, when the pressing plate is closest to the vertical portion of the main body frame, on the opposite side of the vertical portion of the main body frame, The knob provided with a chamber for accommodating the bolt shaft protruding outward from the vertical portion, and if the torque to be transmitted is less than a predetermined value, torque is transmitted from the knob to the nut. And a torque transmission mechanism that blocks transmission of torque from the knob to the nut when the transmitted torque is equal to or greater than a predetermined value.
  2. 　前記トルク伝達機構は、
    　前記ノブの回転軸に対して直交する略円形のトルク伝達面を備えており、そして前記ノブの回転と同調し、且つ前記ノブの回転軸に沿ってスライド可能に内装される環状部材と、
    　前記トルク伝達面に当接し、且つ前記ナットの回転軸に対して直交する略円形のトルク伝受面を備えた前記ナットと、
    　前記環状部材のトルク伝達面を前記ナットのトルク伝受面へ向けて付勢する弾性体とからなり、そして
    　前記トルク伝達面および前記トルク伝受面は、それぞれに、伝達されるトルクが所定の値未満では、前記トルク伝達面と前記トルク伝受面とを相互に係止し、且つ伝達されるトルクが所定の値以上では、前記トルク伝達面と前記トルク伝受面との間で滑りを生じさせる傾斜面を備えた凹部または凸部を含んでいることを特徴とする請求項１に記載の浴槽用手摺り。     The torque transmission mechanism is
    An annular member having a substantially circular torque transmission surface orthogonal to the rotation axis of the knob, and being slidably mounted along the rotation axis of the knob in synchronization with the rotation of the knob;
    The nut provided with a substantially circular torque transmission surface that is in contact with the torque transmission surface and orthogonal to the rotation axis of the nut;
    An elastic body that urges the torque transmission surface of the annular member toward the torque transmission surface of the nut; and the torque transmission surface and the torque transmission surface each have a predetermined torque to be transmitted. If the value is less than the value, the torque transmission surface and the torque transmission surface are locked to each other, and if the transmitted torque is equal to or greater than a predetermined value, slippage occurs between the torque transmission surface and the torque transmission surface. The handrail for bathtubs according to claim 1, comprising a concave portion or a convex portion having an inclined surface to be generated.
  3. 　前記トルク伝受面は、前記ナットへ着脱自在に装着された第２の環状部材上に形成されていることを特徴とする請求項２に記載の浴槽用手摺り。 The handrail for bathtubs according to claim 2, wherein the torque transmission surface is formed on a second annular member that is detachably attached to the nut.
  4. 　前記ナットは、前記本体フレームの垂直部に設けられた貫通口へ挿通される胴部と、前記貫通口より大きく且つ前記胴部から放射方向に延びたフランジを備えており、そして前記胴部を前記貫通口へ挿通し、前記フランジが前記本体フレームの垂直部へ当接する側の反対側から、前記貫通口より大きな外径を有する前記第２の環状部材を前記ナットへ固定することにより、前記ナットは前記本体フレームの垂直部に回転自在に取り付けられていることを特徴とする請求項３に記載の浴槽用手摺り。 The nut includes a trunk portion that is inserted into a through-hole provided in a vertical portion of the main body frame, a flange that is larger than the through-hole and extends in a radial direction from the trunk portion, and the trunk portion is By inserting the second annular member having an outer diameter larger than that of the through hole from the side opposite to the side where the flange is in contact with the vertical portion of the main body frame, the second annular member is fixed to the nut. The handrail for bathtubs according to claim 3, wherein the nut is rotatably attached to a vertical portion of the main body frame.
  5. 　前記本体フレームの垂直部は、樹脂製のワッシャーを介して前記ナットのフランジおよび前記第２の環状部材によって挟み込まれていることを特徴とする請求項４に記載の浴槽用手摺り。 The handrail for a bathtub according to claim 4, wherein the vertical portion of the main body frame is sandwiched between the flange of the nut and the second annular member via a resin washer.
  6. 　前記トルク伝達機構は、
    　前記ノブの回転軸に対して直交する略円形のトルク伝達面を有する前記ノブと、
    　前記トルク伝達面に当接し、且つ前記ナットの回転軸に対して直交する略円形のトルク伝受面を備えており、そして前記ナットの回転と同調し、且つ前記ナットの回転軸に沿ってスライド可能に外装される環状部材と、
    　前記環状部材のトルク伝受面を前記ノブのトルク伝達面へ向けて付勢する弾性体とからなり、そして
    　前記トルク伝達面および前記トルク伝受面は、それぞれに、伝達されるトルクが所定の値未満では、前記トルク伝達面と前記トルク伝受面とを相互に係止し、且つ伝達されるトルクが所定の値以上では、前記トルク伝達面と前記トルク伝受面との間で滑りを生じさせる傾斜面を備えた凹部または凸部を含んでいることを特徴とする請求項１に記載の浴槽用手摺り。     The torque transmission mechanism is
    The knob having a substantially circular torque transmission surface orthogonal to the rotation axis of the knob;
    A substantially circular torque transmission surface that is in contact with the torque transmission surface and orthogonal to the rotation axis of the nut; and is synchronized with the rotation of the nut and slides along the rotation axis of the nut An annular member that is externally possible;
    An elastic body that urges the torque transmission surface of the annular member toward the torque transmission surface of the knob, and the torque transmission surface and the torque transmission surface each have a predetermined torque to be transmitted. If the value is less than the value, the torque transmission surface and the torque transmission surface are locked to each other, and if the transmitted torque is equal to or greater than a predetermined value, slippage occurs between the torque transmission surface and the torque transmission surface. The handrail for bathtubs according to claim 1, comprising a concave portion or a convex portion having an inclined surface to be generated.
  7. 　前記トルク伝達面は、前記ノブへ着脱自在に装着された第３の環状部材上に形成されていることを特徴とする請求項６に記載の浴槽用手摺り。 The handrail for bathtubs according to claim 6, wherein the torque transmission surface is formed on a third annular member that is detachably attached to the knob.
  8. 　前記ナットは、前記弾性体の端部を固定するためのストッパーを備えていることを特徴とする請求項２又は６に記載の浴槽用手摺り。 The bathtub handrail according to claim 2 or 6, wherein the nut includes a stopper for fixing an end of the elastic body.
  9. 　前記ストッパーは、前記ナットへ着脱自在に装着されていることを特徴とする請求項８に記載の浴槽用手摺り。 The bathtub handrail according to claim 8, wherein the stopper is detachably attached to the nut.
  10. 　前記トルク伝達機構は、
    　前記ノブの回転軸に対して平行な略円筒形のトルク伝達内周面を有する前記ノブと、
    　前記トルク伝達内周面に摺接し、且つ前記ナットの回転軸に対して平行に配設される略円筒形の外周面と、前記外周面上であって前記ナットの回転軸に対して平行に配設されたキー溝と、前記トルク伝達内周面に当接するトルク伝受外周面を備えており、且つ前記ナットの回転軸に対して放射方向に移動可能に前記キー溝の中に配置されたキーと、
    　そして前記キーのトルク伝受外周面を、前記ノブのトルク伝達内周面へ向けて付勢する弾性体とからなり、そして
    　前記トルク伝達内周面および前記キーのトルク伝受外周面は、それぞれに、伝達されるトルクが所定の値未満では、前記トルク伝達内周面と前記トルク伝受外周面とを相互に係止し、且つ伝達されるトルクが所定の値以上では、前記トルク伝達内周面と前記トルク伝受外周面との間で滑りを生じさせる傾斜面を備えた凹部または凸部を含んでいることを特徴とする請求項１に記載の浴槽用手摺り。     The torque transmission mechanism is
    The knob having a substantially cylindrical torque transmission inner circumferential surface parallel to the rotation axis of the knob;
    A substantially cylindrical outer peripheral surface that is in sliding contact with the inner peripheral surface of the torque transmission and disposed in parallel to the rotation axis of the nut, and on the outer peripheral surface and in parallel with the rotation axis of the nut. And a torque transmission outer peripheral surface that abuts on the torque transmission inner peripheral surface, and is disposed in the key groove so as to be movable in a radial direction with respect to the rotation shaft of the nut. Key and
    The torque transmission outer peripheral surface of the key is composed of an elastic body that urges the knob toward the torque transmission inner peripheral surface of the knob, and the torque transmission inner peripheral surface and the torque transmission outer peripheral surface of the key are respectively In addition, when the transmitted torque is less than a predetermined value, the inner peripheral surface of the torque transmission and the outer peripheral surface of the torque transmission are mutually locked, and when the transmitted torque is equal to or greater than the predetermined value, 2. The bathtub handrail according to claim 1, further comprising a concave portion or a convex portion provided with an inclined surface that causes slippage between a peripheral surface and the torque transmission outer peripheral surface.
  11. 　前記トルク伝達内周面は、前記ノブの内周面へ着脱自在に嵌合される筒状部材上に形成されていることを特徴とする請求項１０に記載の浴槽用手摺り。 The handrail for a bathtub according to claim 10, wherein the inner peripheral surface of the torque transmission is formed on a cylindrical member that is detachably fitted to the inner peripheral surface of the knob.
  12. 　前記ナットは、前記本体フレームの垂直部に設けられた貫通口へ挿通される胴部と、前記貫通口より大きく且つ前記胴部から放射方向に延びたフランジを備えており、そして前記胴部を前記貫通口へ挿通し、前記フランジが前記本体フレームの垂直部へ当接する側の反対側から、前記貫通口より大きな外径を有する固定リングを前記ナットへ固定することにより、前記ナットは前記本体フレームの垂直部に回転自在に取り付けられていることを特徴とする請求項２又は６又は１０に記載の浴槽用手摺り。 The nut includes a trunk portion that is inserted into a through-hole provided in a vertical portion of the main body frame, a flange that is larger than the through-hole and extends in a radial direction from the trunk portion, and the trunk portion is The nut is inserted into the through-hole, and the nut is fixed to the nut from the side opposite to the side where the flange contacts the vertical portion of the main body frame. The handrail for bathtubs according to claim 2, 6 or 10, wherein the handrail is rotatably attached to a vertical portion of the frame.
  13. 　前記本体フレームの垂直部は、樹脂製のワッシャーを介して前記ナットのフランジおよび前記固定リングによって挟み込まれていることを特徴とする請求項１２に記載の浴槽用手摺り。 The handrail for a bathtub according to claim 12, wherein the vertical portion of the main body frame is sandwiched between the flange of the nut and the fixing ring via a resin washer.
  14. 　前記ノブは、前記ナットまたは前記ナットに固定された部品に設けられた係合孔と連通可能な貫通孔を備えていることを特徴とする請求項２又は６又は１０に記載の浴槽用手摺り。 The said knob is provided with the through-hole which can be connected with the engaging hole provided in the component fixed to the said nut or the said nut, The handrail for bathtubs of Claim 2 or 6 or 10 characterized by the above-mentioned. .
PCT/JP2012/060343 2012-04-17 2012-04-17 Handrail for bathtub WO2013157078A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2014501363A JP5548835B2 (en) 2012-04-17 2012-04-17 Handrail for bathtub
PCT/JP2012/060343 WO2013157078A1 (en) 2012-04-17 2012-04-17 Handrail for bathtub

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2012/060343 WO2013157078A1 (en) 2012-04-17 2012-04-17 Handrail for bathtub

Publications (1)

Publication Number Publication Date
WO2013157078A1 true WO2013157078A1 (en) 2013-10-24

Family

ID=49383066

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2012/060343 WO2013157078A1 (en) 2012-04-17 2012-04-17 Handrail for bathtub

Country Status (2)

Country Link
JP (1) JP5548835B2 (en)
WO (1) WO2013157078A1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017038810A (en) * 2015-08-20 2017-02-23 アロン化成株式会社 Bathtub handrail
JP2018078948A (en) * 2016-11-14 2018-05-24 アロン化成株式会社 Bathtub handrail
JP2018078939A (en) * 2016-11-14 2018-05-24 アロン化成株式会社 Bathtub handrail
JP2018117910A (en) * 2017-01-26 2018-08-02 アロン化成株式会社 Handrail for bathtub

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6954825B2 (en) * 2017-12-20 2021-10-27 アロン化成株式会社 Handrail for bathtub
JP6994930B2 (en) * 2017-12-20 2022-01-14 アロン化成株式会社 Handrail for bathtub

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000161381A (en) * 1998-11-30 2000-06-13 Ntn Corp Torque transmitting device
JP3084776U (en) * 2001-09-19 2002-03-29 船井電機株式会社 Magnetic tape unit
JP2003125967A (en) * 2001-10-23 2003-05-07 Aron Kasei Co Ltd Bathtub handrail
JP2012024592A (en) * 2011-09-07 2012-02-09 Panasonic Electric Works Co Ltd Handrail for bathtub

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000161381A (en) * 1998-11-30 2000-06-13 Ntn Corp Torque transmitting device
JP3084776U (en) * 2001-09-19 2002-03-29 船井電機株式会社 Magnetic tape unit
JP2003125967A (en) * 2001-10-23 2003-05-07 Aron Kasei Co Ltd Bathtub handrail
JP2012024592A (en) * 2011-09-07 2012-02-09 Panasonic Electric Works Co Ltd Handrail for bathtub

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017038810A (en) * 2015-08-20 2017-02-23 アロン化成株式会社 Bathtub handrail
JP2018078948A (en) * 2016-11-14 2018-05-24 アロン化成株式会社 Bathtub handrail
JP2018078939A (en) * 2016-11-14 2018-05-24 アロン化成株式会社 Bathtub handrail
JP2018117910A (en) * 2017-01-26 2018-08-02 アロン化成株式会社 Handrail for bathtub

Also Published As

Publication number Publication date
JP5548835B2 (en) 2014-07-16
JPWO2013157078A1 (en) 2015-12-21

Similar Documents

Publication Publication Date Title
JP5548835B2 (en) Handrail for bathtub
JP5222212B2 (en) Handrail for bathtub
US20110303782A1 (en) Lace Winding Device for Shoes
US9206640B1 (en) Clutch for a roller shade including a ribbed spindle
US20120296245A1 (en) Adjustable helmet and head massager
JP2012024592A (en) Handrail for bathtub
JP3164090U (en) Device for outputting unidirectional vibration and rotational power
JP2009000078A (en) Spinning transmission mechanism for spinning reel
JP2008102290A (en) Optical connector and frame fixing tool for assembling optical connector
TW509638B (en) Improvement of the device mounting a wheel hub of a two wheeler
JP2011220373A (en) Double locking device in pipe structure
WO2021073342A1 (en) Meshing mechanism, rotating module applying meshing mechanism, and operating bed
TWI472310B (en) Bath with armrests
KR101901287B1 (en) Pipe cutter
US8876210B2 (en) Double articulating dental chair headrest apparatus
TW202003138A (en) Auxiliary handle for a portable band saw
KR101426748B1 (en) hinge include elastic body
JP6670056B2 (en) Handrail for bathtub
US7225910B2 (en) Free-wheeling hub device
JP6901340B2 (en) Handrail for bathtub
JP6168448B2 (en) Screw fixing mechanism
JP6901341B2 (en) Handrail for bathtub
KR20150002376A (en) Clearance compensator of yoke
JP6883433B2 (en) Handrail for bathtub
JP2010004800A (en) Fishing reel

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 12874777

Country of ref document: EP

Kind code of ref document: A1

ENP Entry into the national phase

Ref document number: 2014501363

Country of ref document: JP

Kind code of ref document: A

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 12874777

Country of ref document: EP

Kind code of ref document: A1