JP4430455B2 - Grip member connection structure - Google Patents

Description

  The present invention relates to a coupling structure of a grip member that fixes a grip member to an operation shaft protruding from a lock box provided on a door.

  In office buildings and hotels where air-conditioning equipment is constantly movable, air is dry, and static electricity tends to occur especially when carpets are laid. Static electricity may be discharged to the door through the door knob, causing discomfort to the operator. Further, since metal doorknobs feel cold, there is a demand for doorknobs that provide a good operational feel, particularly in hotels where the living environment is important. Conventionally, wooden door knobs have been provided as a means for solving such a demand and the above-mentioned discomfort.

  The wooden door knob is formed in a substantially spherical shape, for example. A female screw is formed on the mounting surface of the door knob. On the other hand, an operation shaft coupled to the door knob protrudes from a lock box provided on the door. An intermediate shaft member is attached to the distal end of the operation shaft so as not to be relatively rotatable. A male screw that engages with the female screw of the door knob is formed at the tip of the intermediate shaft member. The wooden door knob is screwed into the male screw of the intermediate shaft member and is integrally coupled with the intermediate shaft member, and this intermediate shaft member is attached to the operation shaft, so that the intermediate shaft member is attached to the operation shaft. Fixed. In addition, an adhesive is applied between the male screw and the female screw so that the intermediate shaft member and the door knob are more firmly fixed.

  However, the conventional gripping member coupling structure is a structure in which a male screw formed on the outer periphery of the operating shaft and a female screw formed on the door knob are screwed together. Even when fixed, a force in the screwing release direction was generated during the rotation operation, and a force in the releasing direction was applied to the screwing portion. In the gripping member coupling structure, the operation shaft is generally biased in the restoring direction with respect to the rotational operation direction, so even if the screwing direction of the male screw and the female screw is the same direction as the operation rotational direction. The urging force generates a reverse reaction force (force in the direction of loosening the screwing). For this reason, each time the door knob is operated, a rotational moment in the screw release direction acts on the screwed portion between the male screw and the female screw, and in the case of a wooden door knob with low strength, the female screw is deformed, etc. Durability as a coupling structure is poor, and the fixed state cannot be maintained by long-term use, and the door knob may fall off.

  The present invention has been made in view of the above circumstances, and provides a grip member coupling structure that can maintain a reliable fixed state with excellent durability even with a relatively low-strength wooden grip member. The purpose is to prevent parts from falling off

Next, means for solving the above problems will be described with reference to the drawings corresponding to the embodiments.
In the grip member coupling structure according to the present invention , a wooden grip member 9 is fixed to a prismatic operation shaft 5 protruding from a lock box 3 provided on the door 1 via a metal intermediate shaft member 7. A gripping member 9 connecting structure,
The grip member 9 has a fitting hole 15 that is recessed in the direction of the rotation center axis, and a screw hole 35 that is coaxially recessed with a smaller diameter than the fitting hole 15 on the bottom surface of the fitting hole 15. And having at least one rotation restricting recess 18 on the radially outer side of the fitting hole 15,
Said intermediate shaft member 7, the proximal end face 21 of the main body portion 19 as the rotation center axis direction while a cylindrical hole 23 made of a square hole to be fitted to the prismatic operation shaft 5 is formed coaxially, body A screw hole 25 communicating with the hole 23 made of the square hole is formed on the outer periphery of the portion 19, and a flange portion 27 having a larger diameter than the main body portion 19 is formed on the outer periphery on the distal end side of the main body portion 19. the distal end surface of the part 19, the rotation center axis coaxial with the fitting shaft 33 is protruded, screw insertion holes 35 communicating with hole 23 made of the square hole is bored in the fitting shaft 33, fitting On the surface of the flange portion 27 on the outer side of the combined shaft 33, there is a rotation restricting projection 39 fitted into the rotation restricting recess 18 of the grip member 9 ,
With fitting the fitting shaft 33 of the intermediate shaft member 7 into the fitting hole 15 of the grip member 9, the rotation regulating projection 39 is fitted into the rotation restricting recess 18, screw through the hole 23 made of the square hole by screwing the screw hole 17 of the member 9 grip the fixing screws 37 inserted through the insertion hole 35, another to secure the grip and the intermediate shaft member 11 member 9,
By fitting a hole 23 made of a square hole of the intermediate shaft member 7 into the prismatic operation shaft 5 and screwing a small screw from the screw hole 25 of the intermediate shaft member 7, the gripping member 9 is The fixed intermediate shaft member 7 is fixed to the operation shaft 5 .

  In this gripping member coupling structure, when the fitting shaft 33 and the fitting hole 15 are fitted, the intermediate shaft member 7 and the gripping member 9 are positioned so that their centers coincide with each other, and the rotation restricting projection 39 and the rotation are rotated. The restriction recess 18 is fitted to restrict relative rotation. Further, the gripping member 9 is regulated by a fixing screw 37 inserted through the intermediate shaft member 7 and screwed into the gripping member 9. In such a coupling structure, since the rotation restricting protrusion 39 is disposed outside the fitting hole 15, for example, the rotation restricting force is smaller than that in the rotation restricting structure in which a key is provided on the outer periphery of the fitting shaft 33. The rotational operation force (rotational moment) is received. Therefore, even if the gripping member 9 is made of wood having a relatively low strength, the reaction force received from the rotation restricting projection 39 is reduced, the expansion deformation of the rotation restricting recess 18 is suppressed, and the durability is enhanced.

  According to the grip member coupling structure according to the present invention, the grip member is provided with an intermediate shaft member that is attached to the operation shaft, the grip member is provided with a fitting hole and a rotation restricting recess, and the intermediate shaft member is provided with the operation shaft. A fitting shaft, a fitting shaft, and a rotation restricting projection. The fitting shaft is fitted into the fitting hole, and the intermediate shaft member and the gripping member are inserted into the rotation restricting recess. Since the fixing screws inserted through the screw insertion holes are screwed into the screw holes, they are fixed to each other, so that the center of the intermediate shaft member and the gripping member is centered by fitting the fitting shaft and the fitting hole. Thus, the rotation restricting projection and the rotation restricting recess are fitted, and the relative rotation can be restricted. Further, the gripping member is restricted from being pulled out by a fixing screw screwed into the gripping member. Since the rotation restricting protrusion is located outside the fitting hole, for example, the rotation moment acting on the rotation restricting recess can be reduced as compared with a rotation restricting structure in which a key is provided near the outer periphery of the fitting shaft. . Therefore, even if the gripping member is a relatively low-strength wood, it is possible to suppress the expansion deformation of the rotation restricting concave portion and improve durability. As a result, a reliable fixed state can be maintained for a long period of time, and the gripping member can be prevented from falling off.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of a grip member coupling structure according to the present invention will be described below in detail with reference to the drawings.
FIG. 1 is a cross-sectional view of a gripping member coupling structure according to the present invention, FIG. 2 is an exploded perspective view of the coupling structure shown in FIG. 1 with the gripping member removed, and FIG. ) To (c) are explanatory views, FIG. 4 is a perspective view of the intermediate shaft member shown in FIG. 2, and FIG. 5 is a cross-sectional view of a coupling structure according to the present invention in which a grip member of a modified example is fixed.

The grip member coupling structure according to the present embodiment fixes a door knob 9 as a grip member via an intermediate shaft member 7 to, for example, a prismatic operation shaft 5 protruding from a lock box 3 provided on the door 1. It becomes a structure.
In the present embodiment, the door knob 9 is made of wood, for example, a water cherry reinforced wood or a teak material, and is formed in a substantially spherical shape. As shown in FIG. 2, a part of the outer surface of the door knob 9 is formed with a flat coupling surface 13 perpendicular to the rotation center axis 11 passing through the center. The coupling surface 13 is formed in a circular shape that is slightly recessed from the outer surface of the door knob 9. The coupling surface 13 is provided with a fitting hole 15 coaxial with the rotation center axis 11. As shown in FIG. 1, a coaxial screw hole (a wood screw pilot hole or the like) 17 is further drilled at the bottom of the fitting hole 15.

  At least one rotation restricting recess 18 is formed in the coupling surface 13 of the door knob 9 on the radially outer side of the fitting hole 15. In the present embodiment, as shown in FIGS. 1, 2, and 3 (b), a pair of rotation restricting recesses 18 and 18 are provided with the fitting hole 15 therebetween (in FIG. 3 (b), the fitting is performed). The case where the joint hole 15 is formed by a square hole is illustrated). In addition, as shown in FIGS. 3A and 3C, the rotation restricting recess 18 may be one or more than three. Furthermore, the rotation restricting recess 18 according to the present embodiment is a circular hole, but may be a square hole or a step (a recess in which the coupling surface 13 is dug).

  In the present embodiment, the intermediate shaft member 7 is formed using a metal material. The intermediate shaft member 7 has a main body portion 19 formed in a cylindrical shape, and a base hole 21 shown in FIG. 4 is provided with a square hole 23 to be fitted to the operation shaft 5. A screw hole 25 communicating with the square hole 23 is formed in the outer peripheral surface of the main body 19. The intermediate shaft member 7 is fixed to the operation shaft 5 so that it cannot be removed by fitting a square hole 23 to the operation shaft 5 and screwing a small screw (not shown) into the screw hole 25.

  A circular flange portion 27 having a diameter larger than that of the main body portion 19 is formed concentrically on the distal end side of the operation shaft 5. The front end surface of the flange portion 27 is a flat mounting seat surface 29 (see FIG. 2) that is in close contact with the coupling surface 13 of the door knob 9. Further, the rear surface 31 (see FIG. 4) of the flange portion 27 opposite to the mounting seat surface 29 is formed with a curved surface that is substantially the same as the outer surface curvature of the door knob 9.

  A fitting shaft 33 that is coaxial with the rotation center axis 11 protrudes from the mounting seat surface 29 of the flange portion 27. A screw insertion hole 35 is formed at the tip of the fitting shaft 33, and the screw insertion hole 35 communicates with the square hole 23. Accordingly, the fixed screw 37 inserted into the square hole 23 can protrude from the screw insertion hole 35. The fitting shaft 33 is fitted into the fitting hole 15 of the door knob 9 without rattling.

  On the mounting seat surface 29 of the flange portion 27, at least one rotation restricting projection 39 is projected from the rotation center outside of the fitting shaft 33. In the present embodiment, a pair of rotation restricting protrusions 39 are provided so as to sandwich the fitting shaft 33, but one or the rotation restricting protrusions 39 are arranged corresponding to the arrangement of the rotation restricting recesses 18 shown in FIGS. Two or more may be provided. In addition, the rotation restricting protrusion 39 in the illustrated example has a cylindrical shape, but may be a prism or a convex portion (a step portion protruding from the mounting seat surface 29).

  Tapered guide surfaces 15 a and 18 a are preferably formed in the fitting hole 15 and the rotation restricting recess 18 of the door knob 9. Further, it is preferable to form tapered chamfered portions 33 a and 39 a at the tips of the fitting shaft 33 and the rotation restricting protrusion 39. As a result, the rotation restricting projection 39 is smoothly fitted in accordance with the rotation restricting recess 18 by fitting the fitting shaft 33 into the fitting hole 15.

  With the door knob 9 and the intermediate shaft member 7 formed as described above, the rotation restricting protrusion 39 enters the rotation restricting recess 18 at the same time by inserting the fitting shaft 33 into the fitting hole 15, and the intermediate shaft member 7. And the relative rotation of the door knob 9 are restricted. At this time, it is preferable to apply an adhesive to the coupling surface 13, the fitting hole 15, and the rotation restricting recess 18. In the coupling structure according to the present embodiment, a large coupling surface 13 that does not exist in the related art extending radially outward from the rotation center axis 11 is provided. Compared to the adhesive applied between the male screw and the female screw, a stronger bonding effect can be obtained.

  The door knob 9 and the intermediate shaft member 7 thus fitted to each other have a fixed screw 37 inserted from the square hole 23 protruding from a screw insertion hole 35 at the tip of the fitting shaft 33, and a screw hole for the door knob 9. 17 is fixed together by screwing. In this state, the flange portion 27 is attached to the door knob 9 by sinking, and the back surface 31 of the flange portion 27 and the surface of the door knob 9 are continuous. In the door knob 9 and the intermediate shaft member 7 fixed in this manner, the fitting shaft 33 of the intermediate shaft member 7 is externally inserted into the operation shaft 5 and a small screw (not shown) is screwed into the screw hole 25. The door knob 9 is fixed to the operation shaft 5 via the intermediate shaft member 7.

  In this gripping member coupling structure, when the fitting shaft 33 and the fitting hole 15 are fitted, the intermediate shaft member 7 and the door knob 9 are positioned so that the centers thereof coincide with each other, and the rotation restricting projection 39 and the rotation restricting portion 39 are restricted. The concave portion 18 is fitted and relative rotation is restricted. Further, the door knob 9 is regulated by a fixing screw 37 inserted through the intermediate shaft member 7 and screwed into the door knob 9. In such a coupling structure, since the rotation restricting projection 39 is disposed outside the fitting hole 15, for example, a conventional male screw / female screw fitting structure or a key is provided on the outer periphery of the fitting shaft 33. Compared with a general rotation restricting structure to be provided, a rotational operation force (rotational moment) is received by a small rotation restricting force. Therefore, even when the door knob 9 is made of wood having a relatively low strength, the reaction force received from the rotation restricting protrusion 39 is reduced, and the deformation of the rotation restricting recess 18 is suppressed, and the durability is enhanced.

  Therefore, according to the coupling structure of the grip member, even if the grip member is a relatively low-strength wood, it is possible to suppress the expansion deformation of the rotation restricting concave portion 18 and the like, thereby improving durability. A reliable fixed state can be maintained over a long period of time, and the gripping member can be prevented from falling off.

  In the above embodiment, the case where the grip member is the substantially spherical doorknob 9 has been described as an example. However, the grip member may be a lever 9A as shown in FIG. May be cylindrical, polygonal, or the like. However, also in this case, like the door knob 9 described above, the coupling surface 13, the fitting hole 15, the screw hole 17, and the rotation restricting recess 18 are provided.

  In the above embodiment, the case where the intermediate shaft member 7 is metal and the gripping member is wood has been described as an example. However, the coupling structure according to the present invention is not limited to these materials, In addition, the intermediate shaft member and the grip member are made of metals with different finishes, for example, metal materials with different surface treatments such as plating, mirror surface, hairline, blast finish, and pear ground, or only grip members with rubber or resin. For example, resin materials mixed with antistatic resins and antibacterial agents, those coated with foamed resin or soft resin, or combinations of different colors, colors, patterns, etc. May be a combination of metal and the like.

It is sectional drawing of the coupling structure of the grip member which concerns on this invention. It is a disassembled perspective view of the state which removed the grip member of the joint structure shown in FIG. It is explanatory drawing which represented the example of arrangement | positioning of a rotation control recessed part by (a)-(c). It is a perspective view of the intermediate shaft member shown in FIG. It is sectional drawing of the coupling structure which concerns on this invention which fixed the grip member of the modification.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Door 3 ... Lock box 5 ... Operation shaft 7 ... Intermediate shaft member 9 ... Grip member (door knob)
DESCRIPTION OF SYMBOLS 11 ... Rotation center axis 15 ... Fitting hole 17 ... Screw hole 18 ... Rotation restriction recessed part 21 ... Base end surface 23 ... Hole (square hole)
33 ... Fitting shaft 35 ... Screw insertion hole 37 ... Fixed screw 39 ... Rotation restricting protrusion

Claims (1)

A wooden grip member (9) is fixed to a prismatic operation shaft (5) protruding from a lock box (3) provided on the door (1) via a metal intermediate shaft member (7). A coupling structure of the gripping member (9),
The grip member (9) has a fitting hole (15) recessed in the direction of the rotation center axis, and is coaxially recessed with a smaller diameter than the fitting hole (15) on the bottom surface of the fitting hole (15). A screw hole (35), and at least one rotation restricting recess (18) radially outward of the fitting hole (15),
The intermediate shaft member (7) is a hole formed by a square hole fitted to the prismatic operation shaft (5) on the base end surface (21) of the main body (19) having one cylindrical shape in the rotation center axis direction. (23) is formed coaxially, and a screw hole (25) leading to the hole (23) made of the square hole is formed in the outer periphery of the main body (19), and is formed on the outer periphery on the front end side of the main body (19). Is formed with a flange portion (27) having a diameter larger than that of the main body portion (19), and a fitting shaft (33) coaxial with the rotation center axis thereof is projected from the front end surface of the main body portion (19) . The fitting shaft (33) is provided with a screw insertion hole (35) communicating with the hole (23) made of the square hole, and on the surface of the flange portion (27) on the outer side of the fitting shaft (33). And a rotation restricting projection (39) fitted into the rotation restricting recess (18) of the grip member (9) ,
The fitting shaft (33) of the intermediate shaft member (7) is fitted into the fitting hole (15) of the grip member (9), and the rotation restricting protrusion (39) is provided in the rotation restricting recess (18). The fixed screw (37) inserted into the screw insertion hole (35 ) from the hole (23) made of the square hole is screwed into the screw hole (17) of the grip member (9), so that the intermediate The shaft member (11) and the grip member (9) are fixed to each other,
A hole (23) made of a square hole in the intermediate shaft member (7) is fitted into the prismatic operation shaft (5), and a machine screw is screwed through the screw hole (25) in the intermediate shaft member (7). By combining, the intermediate shaft member (7) to which the grip member (9) is fixed is fixed to the operation shaft (5) .

Images