JP2017184880A - Fixing member for bed side rail - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fixing member for a bed side rail which allows an operation member for pressing and fixing into an attachment hole by tilting a leg part to be reliably operated with small force and prevents the operation member from moving unexpectedly.SOLUTION: An upper part of leg parts 7, 8 is provided to tilt in a pair of cylindrical supporting members 3, 4 provided on a side rail in a manner that an axial direction becomes vertical. A lever 20 as an operation member is supported on a support post 2 arranged between the supporting members 3, 4 to oscillate by a rotational shaft 10. A first connecting lever 5 pivotally supported by a second rotational shaft 11 of the lever 20 has a tip end part connected to an upper part of the one leg part 7. A second connecting lever 6 whose tip end part is connected to an upper part of the other leg part 8 is pivotally supported by a third rotational shaft 12 of the lever 20. Consequently, by oscillating the lever 20, the leg parts 7, 8 tilt through the first and second connecting levers 5, 6.SELECTED DRAWING: Figure 1

Description

  In the present invention, in order to detachably install the bed side fence on the bed side, the leg bars of the bed side fence are respectively inserted into a pair of cylindrical mounting holes provided on the bed side. A bed side rail fixing member that fixes the leg bar in the mounting hole by friction between the outer surface of the leg bar and the inner surface of the mounting hole by adjusting a distance between the pair of leg bars. .

  On the side of the bed, a side fence is installed to prevent the bed user from falling from the bed. Further, the side fence can be removed when necessary so as not to disturb the medical treatment of the doctor and the nursing / caregiving of the nurse or caregiver. Thus, in order to attach the side fence to the bed side, a pair of cylindrical mounting holes are installed at the side fence attachment position of the bed side, and a pair of cylindrical mounting holes are provided at the lower edge of the bed side fence. The leg bars are provided substantially in parallel, and each leg bar is inserted into the mounting hole, and the leg bars are pressed against the inner surface of the mounting hole by widening the space between the leg bars to remove the leg bar by friction. Secure to the wearing hole. Moreover, in order to remove a side fence from a bed side part, the press to the attachment hole of a leg stick | rod can be cancelled | released.

  FIG. 4 is a view showing a fixing member of a conventional bed side fence. A pair of cylindrical support members 3 and 4 are fixed to the frame 1 of the side fence so that the longitudinal direction thereof is vertical. The upper portions 7a and 8a of the rod-like leg portions 7 and 8 are inserted into the support members 3 and 4, respectively. The leg portions 7 and 8 are rotatably supported by the support portions 3 and 4 by rotation shafts 7c and 8c at intermediate portions between the upper portions 7a and 8a and the lower portions 7b and 8b. The knobs 98 and 99 are attached to the support members 3 and 4 with their rotational axes horizontal, and the knobs 98 and 99 are rotated to push the knobs 98 and 99 into the support members 3 and 4. The leg portions 7 and 8 can be tilted through the upper portions 7a and 8a. As a result, the lower portions 7b and 8b of the legs 7 and 8 are tilted in opposite directions as shown in FIG. 4 within the attachment holes, and the lower portions 7b and 8b are pressed against the inner surface of the attachment holes, 7 and 8 are fixed to the mounting holes. When the knobs 98 and 99 are rotated in the reverse direction, the lower portions 7b and 8b are tilted in the reverse direction, the lower portions 7b and 8b are loosened from the mounting holes, and the side fence can be removed.

  On the other hand, in the prior art described in Patent Document 1, one of the leg bars is divided into an upper part and a lower part, and the upper part of the leg part is rotatable around its central axis at the lower edge part of the side fence. The lower part of the leg part is connected to the upper part of the leg part so that the central axis is eccentric. Then, the lower leg portion is inserted into the mounting hole, and the lower leg portion is rotated via an operation handle (lever) fixed to the lower leg portion, whereby the eccentric lower leg portion and the other leg The space | interval between parts is changed, the leg part lower part is pressed to the attachment hole, and the leg part and the attachment hole are being fixed with the frictional force. The operation handle is elastically fitted into a recess provided in a holding device fixed to the side fence so that the operation handle is held at a predetermined position when the leg is fixed.

  Further, in the prior art described in Patent Document 2, in contrast to the prior art shown in FIG. 4, instead of pushing the upper ends of the upper parts 7a and 8a in the support members 3 and 4 with the knobs 98 and 99, the upper parts 7a and 8a. A pair of horizontal members connected to each other is provided, and the horizontal members are connected by a knob. By rotating this one knob and moving the horizontal member in the horizontal direction, the legs 7, 8 is tilted.

JP2012-70767 JP 2002-136555 A

  However, in the prior art shown in FIG. 4, there is a trouble of rotating the knobs 98 and 99, and the force for rotating the knobs 98 and 99 differs depending on the operator, and the force for pushing the knobs 98 and 99 is insufficient. There is a possibility that the fixing force to the mounting hole is insufficient.

  Moreover, in the case of the prior art of Patent Document 1, it is necessary to pull the operation handle toward the front and rotate it, and it is necessary to provide a space for this in front of the side fence. Further, in the prior art described in Patent Document 1, the eccentric lower portion of the leg is rotated by the operation handle to fix and release the lower portion of the leg and the mounting hole. In this fixed state, the operation handle is simply fitted into the recess and held at that position, and therefore, there is a problem that the operation handle is easily detached from the recess when an external force is applied. If the operation handle is carelessly removed from the predetermined holding position, the operation handle may rotate to the frame side of the bed, and the bed frame or the side fence may be damaged.

  Furthermore, in the prior art described in Patent Document 2, as in the case of FIG. 4, the knob is rotated and the leg is tilted, so that the fixing force to the mounting hole of the side fence may be insufficient. There is. Thus, since sufficient fixing force cannot be ensured, in Patent Document 2, another screwing mechanism is provided and there is a problem that efficiency is poor.

  The present invention has been made in view of such a problem, and an operation member for tilting and fixing a leg portion to a mounting hole can be reliably operated with a small force. The purpose of the present invention is to provide a fixing member for the bed side fence that can prevent the inadvertent movement and can securely fix the side fence and save space without the lever rotating horizontally. To do.

The fixing member of the bed side fence according to the present invention is:
In the fixing member for the bed side fence that fixes the bed side fence to the bed frame using a pair of cylindrical mounting holes provided in the bed frame,
A pair of cylindrical support members provided on the side rails with the axial direction vertical;
A pair of leg portions, each of which is inserted into each of the support members, the remaining portion extends downward from the support member, and is supported to be tiltable by the support member;
A support post fixed to the side fence at an intermediate portion between the support members;
A lever having a base end pivotally supported by the support column via a first rotation shaft and a ratchet pawl provided at the tip;
A ratchet bar provided with a spur gear provided along a movement locus of the pawl when the lever swings about the first rotation axis;
A base end portion is rotatably connected to a second rotation shaft provided at a position separated from the first rotation shaft at the base end portion of the lever, and a tip end portion is connected to an upper portion of one of the leg portions. A first connecting lever,
A base end portion is rotatably connected to a third rotation shaft provided at a position separated from the first rotation shaft at the base end portion of the lever, and a tip end portion is connected to an upper portion of the other leg portion. A second connecting lever,
Have
Due to the swing of the lever, the second rotating shaft and the third rotating shaft simultaneously revolve around the first rotating shaft in the same direction, and the first connecting lever and the second rotating shaft. The connecting lever is moved in the opposite direction.

In the fixing member of this bed side fence, for example,
The upper portion of the ratchet bar may be configured to have a concave portion that engages the pawl and holds the pawl in its upper position.

  The first connecting lever and the second connecting lever include a first lever on the base end side, a second lever on the tip end side that is screwed to the first lever, and a leg of the leg portion, respectively. A locking piece for locking the upper portion is integrally formed, and the second connecting portion of the first connecting lever is adjusted by adjusting a screwing position of the first lever and the second lever. The length from the rotating shaft to the locking piece and the length of the second connecting lever from the third rotating shaft to the locking piece can be adjusted. Alternatively, both the first connecting lever and the second connecting lever may be formed as a single body.

  According to the present invention, when the pair of leg portions tilt, the distance between the lower ends of these leg portions changes, the pressing force between the mounting holes changes, and the pressing force is high. The leg portion can be fixed to the attachment hole, and the leg portion can be extracted from the attachment hole with a small pressing force.

  In this case, in the present invention, since the leg portions can be tilted in directions opposite to each other only by swinging the lever, a large lever is used as the lever, The link ratio between the length between the first rotating shaft and the length of the first connecting lever or the length of the second connecting lever can be increased. The leg portion can be fixed to the mounting hole by pressing.

  And in this invention, since the said lever can be reliably fixed to the fixed position, a side fence does not slip out carelessly.

It is a front view which shows the fixing member of embodiment of this invention. (A), (b) is a front view which similarly shows the operation | movement. (A), (b) is a front view which shows the side fence of use condition similarly. It is a front view which shows the conventional fixing member.

  Hereinafter, embodiments of the present invention will be specifically described with reference to the accompanying drawings. FIG. 1 is a front view showing a fixing member according to the first embodiment of the present invention, FIGS. 2 (a) and 2 (b) are diagrams showing the operation thereof, and FIGS. 3 (a) and 3 (b) are attached with the fixing member. It is a front view which shows the whole bed side fence. A pair of cylindrical support members 3 and 4 are fixed to a portion extending horizontally at the lower end of the frame 1 of the side fence so that its central axis is vertical. The support column 2 is fixed at a substantially central position between the support members 3 and 4 with its longitudinal direction being vertical. The support members 3 and 4 are provided with rod-like leg portions 7 and 8 rotatably inserted by the rotation shafts 7c and 8c with the upper portions 7a and 8a thereof inserted into the support members 3 and 4, respectively. That is, the upper portions 7a and 8a are loosely fitted by the rotating shafts 7c and 8c so as to be slightly tiltable within the support members 3 and 4. The lower portions 7b and 8b of the leg portions 7 and 8 are inserted into cylindrical mounting holes that are erected and fixed to the bed frame. The lower portions 7b and 8b are loosely fitted in the mounting holes in the same manner as the upper portions 7a and 8a in the support members 3 and 4. The lower portions 7b and 8b below the rotating shafts 7c and 8c are heavier than the upper portions 7a and 8a.

  At the lower end of the support column 2, a rotation shaft 10 is installed with the center of rotation being horizontal, and a base end portion of an arcuate lever 20 is attached to the rotation shaft 10. The lever 20 can swing around a horizontal axis. A gripping portion 21 is provided at the tip of the lever 20, and a wavy portion 22 is formed so that the gripping portion 21 can be easily gripped. A ratchet pawl 31 is rotatably attached to a portion of the lever 20 on the gripping portion 21 side, and the pawl 31 is rotated by a lever 32. A ratchet rod 9 formed with a spur gear 30 that is curved in an arcuate shape is disposed on the movement locus of the pawl 31 when the lever 20 swings, and is fixed to the frame 1. A recess 33 for holding the lever 20 is formed in the upper portion of the ratchet bar 9. A ratchet pawl 31 engages with the spur gear 30 of the ratchet bar 9, and the pawl 31 prevents the lever 20 from swinging upward when the pawl 31 engages with the spur gear 30. Is locked. By lifting the pawl 31 by the lever 32, the pawl 31 and the spur gear 30 are disengaged.

  As described above, the base end portion of the lever 20 is swingably supported by the support column 2 by the rotating shaft 10. The lever 20 is in the vicinity of the rotating shaft 10 in the lever 20 and from the rotating shaft 10. In addition, the rotating shaft 11 is provided at a slightly lower position. A base portion 5 a of the connecting lever 5 is rotatably connected to the rotating shaft 11, and a distal end portion 5 b of the connecting lever 5 is connected to an upper portion of the upper portion 7 a of the leg portion 7. On the other hand, the rotation shaft 12 is provided in the vicinity of the rotation shaft 10 in the lever 20 and slightly above the rotation shaft 10. A base portion 6 a of the connecting lever 6 is rotatably connected to the rotating shaft 12, and a distal end portion 6 b of the connecting lever 6 is connected to an upper portion of the upper portion 8 a of the leg portion 8. Note that the distal end portion 5b of the connecting lever 5 and the distal end portion 6b of the connecting lever 6 penetrate the upper portion 7a of the leg portion 7 and the upper portion 8a of the leg portion 8 with a slight gap, respectively. The upper portions 7a and 8a are locked so as not to come out of the locking pieces 5c and 6c by the locking pieces 5c and 6c fixed at positions outside the upper portions 7a and 8a in the portion 6b. Therefore, although the upper parts 7a and 8a do not move outside the locking pieces 5c and 6c, they can move slightly inside the locking pieces 5c and 6c. The rotation shaft 11 and the rotation shaft 12 are provided at the same distance from the rotation shaft, for example, with the rotation shaft 10 interposed therebetween. Therefore, in the process in which the lever 20 swings downward, the rotating shaft 11 and the rotating shaft 12 revolve around the rotating shaft 10 in the counterclockwise direction in FIG. On the contrary, in the process in which the lever 20 swings upward, the rotating shaft 11 and the rotating shaft 12 revolve around the rotating shaft 10 in the clockwise direction. When the rotary shaft 11 and the rotary shaft 12 revolve counterclockwise around the rotary shaft 10, the connecting lever 5 and the connecting lever 6 move in directions approaching each other, and the leg 7 And the upper part 7a and the upper part 8a of the leg part 8 are pulled toward each other. On the contrary, when the rotation shaft 11 and the rotation shaft 12 revolve around the rotation shaft 10 in the clockwise direction, the connecting lever 5 and the connecting lever 6 move away from each other, and the leg 7 And the upper part 7a and the upper part 8a of the leg part 8 are pulled apart in the direction which mutually separates.

  In addition, as shown in FIG. 3, a part of the arm 1 of the side fence is covered with a cover 100 so that the patient on the bed is protected from injury by the operation of the lever 20 or the like. It has become.

  Next, the operation of the fixing member of the bed side fence of the present embodiment configured as described above will be described. As shown in FIG. 2 (a), when the lever 20 is positioned upward, the ratchet pawl 31 is engaged with the recess 33 at the upper portion of the ratchet bar 9, and in this state, the side fence Carry around. Since the pawl 31 is engaged with the concave portion 33, the lever 20 does not fall inadvertently during carrying. When the lever 20 is positioned upward, the rotary shafts 11 and 12 are not positioned to restrain the upper portions 7a and 8a of the leg portions 7 and 8 via the connecting levers 5 and 6, respectively. That is, the locking pieces 5c and 6c of the connecting levers 5 and 6 are positioned outside the upper portions 7a and 8a in an unconstrained state. Therefore, the legs 7 and 8 are aligned in the vertical direction by gravity because the lower portions 7b and 8b below the rotating shafts 7c and 8c are heavier than the upper portions 7a and 8a. The lower portions 7b, 8b of 8 are parallel to each other. Therefore, in this state, the leg lower portions 7b and 8b of the side fence can be easily inserted into the mounting holes of the bed frame, and the side fence can be attached to the bed frame. The same applies when the side fence is removed from the bed frame. In addition, since the leg parts 7 and 8 are in an unrestrained state, they are usually in a posture parallel to each other in the vertical direction due to gravity. Even if there is an installation accuracy of the mounting hole of the bed frame (displacement between the position and posture of the support members 3 and 4), it tilts to match this, The leg lower portions 7b and 8b can be easily inserted into the mounting holes of the bed. In addition, the attitude | position at the time of insertion to the attachment hole of the leg parts 7 and 8 is not necessarily parallel, and may be inclined if insertion is possible.

  Next, in a state where the lower leg portions 7b and 8b are inserted into the mounting holes, the pawl 31 is rotated by the lever 32 to be removed from the recess 33, and the lever 20 is moved as shown in FIG. Swing downward. Then, the rotating shafts 11 and 12 revolve around the rotating shaft 10 in the counterclockwise direction, and the connecting levers 5 and 6 move toward the support column 2 with respect to each other. Thereby, the upper parts 7a and 8a of the leg parts 7 and 8 move close to each other, and the lower parts 7b and 8b expand and are pressed against the inner surfaces of the attachment holes. Accordingly, the lower portions 7b and 8b are fixed to the mounting holes, the side fence is fixed to the bed frame, and the side fence is prevented from being inadvertently detached from the bed. At this time, since the ratchet pawl 31 is locked to the ratchet spur gear 30, the lever 20 does not swing upward unless the lever 32 is operated, and the side fence is securely attached to the bed frame. Fixed. The force for swinging the lever 20 downward is sufficient for the lever 20 to have a sufficiently long length, so that a small force is sufficient and the fixing force is not insufficient.

  Even when the manufacturing accuracy of the connecting levers 5, 6 and the like as parts is low, by adjusting the fixing position of the pawl 31 in the spur gear 30, the force for tilting the legs 7, 8 is applied to the attachment holes. The fixing force can be adjusted to ensure sufficient. Further, the base portions 5a and 6a of the connecting levers 5 and 6 and the tip portions 5b and 6b are manufactured separately, and the base portions 5a and 6a are screwed into the tip portions 5b and 6b and connected to each other, thereby being integrated into a rod shape. By adopting such a structure, the entire length of the connecting levers 5 and 6 can be adjusted by changing the screwing amounts of the base portions 5a and 6a and the tip portions 5b and 6b. Therefore, when the fixing force cannot be adjusted by adjusting the ratchet fixing position of the pawl 31, the fixing force can be adjusted by adjusting the lengths of the connecting levers 5 and 6. However, when the fixing force can be adjusted by adjusting the ratchet fixing position of the pawl 31, the connecting levers 5 and 6 may be formed as a single unit if the length of the connecting levers 5 and 6 may not be adjusted. You may do it. In this case, the apparatus cost can be reduced. The ratchet pawl 31 is preferably configured to be elastically biased toward the ratchet bar 9 by a spring or the like. Thereby, the pawl 31 can be reliably retained in the spur gear 30.

  In the present invention, when the bed side rail is mounted on the bed frame, the leg portion of the side rail can be securely fixed to the mounting hole of the bed frame, and a large fixing force can be output with a small operating force. Due to the artificial fluctuation of the fixing force, the fixing force of the side fence will not be insufficient. For this reason, the present invention is extremely useful as a bed apparatus such as a hospital or a care facility in which humans to be handled vary.

1: Side fence 2: Support column 3, 4: Support member 5, 6: Connection lever 5a, 6a: Base part 5b, 6b: Tip part 5c, 6c: Locking piece 7, 8: Leg part 7a, 8a: Upper part 7b 8b: lower part 9: ratchet bar 20: lever 21: gripping part 30: spur gear 31: pawl 33: concave part

Claims (4)

In the fixing member for the bed side fence that fixes the bed side fence to the bed frame using a pair of cylindrical mounting holes provided in the bed frame,
A pair of cylindrical support members provided on the side rails with the axial direction vertical;
A pair of leg portions, each of which is inserted into each of the support members, the remaining portion extends downward from the support member, and is supported to be tiltable by the support member;
A support post fixed to the side fence at an intermediate portion between the support members;
A lever having a base end pivotally supported by the support column via a first rotation shaft and a ratchet pawl provided at the tip;
A ratchet bar provided with a spur gear provided along a movement locus of the pawl when the lever swings about the first rotation axis;
A base end portion is rotatably connected to a second rotation shaft provided at a position separated from the first rotation shaft at the base end portion of the lever, and a tip end portion is connected to an upper portion of one of the leg portions. A first connecting lever,
A base end portion is rotatably connected to a third rotation shaft provided at a position separated from the first rotation shaft at the base end portion of the lever, and a tip end portion is connected to an upper portion of the other leg portion. A second connecting lever,
Have
Due to the swing of the lever, the second rotating shaft and the third rotating shaft simultaneously revolve around the first rotating shaft in the same direction, and the first connecting lever and the second rotating shaft. A connecting member for a bed side fence, wherein the connecting lever is moved in opposite directions. The fixing member for the bed side fence according to claim 1, further comprising a recess provided on an upper portion of the ratchet bar and engaging the pawl so as to hold the pawl in an upper position thereof. The first connecting lever and the second connecting lever respectively include a first lever on the base end side, a second lever on the tip end side screwed into the first lever, and an upper portion of the leg portion. The locking piece to be locked is integrally configured, and the second rotation of the first connecting lever is performed by adjusting the screwing position of the first lever and the second lever. The length from the shaft to the locking piece and the length from the third rotation shaft of the second connecting lever to the locking piece are adjustable. The fixing member of the side fence for beds as described in 2. 3. The bed side rail fixing member according to claim 1, wherein each of the first connecting lever and the second connecting lever is formed as a single body. 4.

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