KR101527612B1 - Mounting structure of handle for door - Google Patents

Abstract

And an object of the present invention is to provide an attachment structure for a door handle that prevents excessive tightening of screws.

A first pedestal 1 disposed on one outer side surface 61 of the door 6 and provided with a boss 4 having a threaded screw hole and a second pedestal 1 corresponding to the first pedestal 1, The second pedestal 2 disposed on the other outer side surface 62 of the second pedestal 2 and having a screw insertion hole 22 formed at a position facing the boss 4, A screw 3 screwed to the threaded screw hole of the boss 4 through the screw insertion hole 22 and integrally connecting the first seat 1 and the second seat 2, And the other is disposed on the outer surface of the second pedestal 2 and the other pedestal 2 is disposed on the outer side of the handlebars 1 of the first pedestal 1 and the second pedestal 2, (10) having a pair of door handles connected to each other via a boss (4), wherein an elongated hole (43) extending in the axial direction is formed on a circumferential surface of the boss (4) The end of the long hole 43 on the opposite side The length (l _2), from the boss end portion and the boss end portion is larger than the length (l ₁₎ to the opposite side for the screwing of the screw ends.

Description

TECHNICAL FIELD [0001] The present invention relates to a mounting structure for a door,

The present invention relates to an attachment structure for a door handle, for example, a lever handle rotatably attached to a predetermined position of a door.

9, the above-described conventional attachment structure for a door handle has a screw hole (not shown in Fig. 9) for screwing, which is disposed on one outer side surface 161 of the door 106 A boss 104 with a boss head 141 and a disk-shaped base body 101 having a first handle attachment hole 112 and two headed boss 104 attachment holes 113 And a second handle attaching hole 112 which is disposed on the other outer side surface 162 of the door 106 in correspondence with the pedestal body 101 and which is located at a position opposed to the boss 104 and the first handle attaching hole 112 The second pedestal 102 formed with the two screw insertion holes 122 and the second handle attachment holes 121 and the bosses 121 through the screw insertion holes 122 of the second pedestal 102 Two screws 103 which are screwed to the threaded screw holes of the pedestal main body 101 and integrally connect the pedestal body 101 and the second pedestal 102, And the other is disposed on the outer surface of the second pedestal 102 and connected to the pedestal main body 101 via the handle attachment holes 112 and 121 of the second pedestal 102 And a pair of door handles.

In this conventional attachment structure 100 for a door handle, the headed boss 104, the pedestal body 101, and the second pedestal 102 are positioned in the door of the door handle, And serves as a member for protecting the handle and the sliding portion. The attachment of the head boss 104 to the pedestal main body 101 and the second pedestal 102 to the door 106 is achieved by screwing the screw 103 into the screw hole for screw connection of the boss 104 Is done. As the driver A is rotated in the tightening direction, the pedestal body 101 is moved to the door surface 161 and the second pedestal 102 is moved to the door surface 162).

Patent Document 1: Japanese Patent Application Laid-Open No. 2002-129796 (Claim 1)

However, the strength of tightening in the attachment structure 100 of the door handle relies on the feeling of the operator. Therefore, depending on the operator, there is a case where the boss 104 is strongly tightened to securely fix it. In this case, the boss 104 may be damaged. In order to prevent breakage of the boss 104, a resin having a high bending elastic modulus or a metal having a high mechanical strength was used as a material of the boss 104 in some cases. However, even if such a material is used, there is a case that the worker is tightened more strongly in order to firmly fix it, and in this case, there is a problem that deformation such as depression of the door is caused.

Accordingly, it is an object of the present invention to provide an attachment structure for a door handle that prevents excessive tightening of screws.

Under these circumstances, the present inventors have conducted intensive studies, and as a result, discovered that, when a long hole having a predetermined length is formed in the cylindrical portion of the boss, excessive tightening of the screw can be prevented, and the present invention has been accomplished.

That is, the present invention provides a door comprising: a first pedestal disposed on an outer surface of one side of a door and having a boss having a threaded screw hole and a first handle attachment hole; A second pedestal disposed on the outer surface of the other side and provided with a screw insertion hole and a second handle attachment hole at positions opposed to the boss and the first handle attachment hole, A screw that is screwed to the threaded screw hole of the boss through the insertion hole to integrally connect the first pedestal and the second pedestal, and a screw which is disposed on the outer surface of the first pedestal, And a pair of door handles disposed on an outer surface of the second pedestal and connected to each other through respective handle attachment holes of the first pedestal and the second pedestal, In the axial direction With forming a long hole extending in, the length (l ₂₎ from the boss end of the screw insertion side to the end portion of the boss end portion and the elongated hole on the other side, from the boss end of the screw insertion side, and the boss end Is larger than the length (l ₁ ) to the end of the screw for threading on the opposite side.

Further, the present invention is characterized in that the first pedestal is composed of a pedestal body having a boss with a head having a threaded screw hole and a boss attachment hole with a first handle attachment hole and a head, And the base body and the pedestal body are different members from each other.

Further, the present invention provides an attachment structure for the door handle, characterized in that the boss is made of metal or resin.

Further, the present invention provides the attachment structure for a door for a door, characterized in that the boss is a resin having a flexural modulus of 1.2 GPa or more.

Further, the present invention provides an attachment structure for a door handle, characterized in that the length of the elongated hole is 1.5 to 3.0 times the screwing screw length.

The attachment structure for a door handle according to the present invention is characterized in that a screw for screwing is not formed on the boss extending from the boss end on the screw insertion side to the end of the elongated hole on the boss end side.

And a cover member to be fitted to the bosses.

In the attachment operation of the door handle of the present invention, when the screws are tightened too much, the boss side can not withstand the tightening force, and the elongated hole is deformed to expand in the direction orthogonal to the axial direction, , And then the engagement of the screw, in which the force is balanced, is fixed at a position in which the screw is removed. The tightening force can not withstand the tightening force and the elongated hole is deformed and expands momentarily in the radial direction so that the engagement of the screw is displaced and then the engagement of the screw is canceled by the elastic force of the elongated hole . That is, when the tightening force becomes equal to or greater than a certain level, a long hole is formed, and more torque than necessary is missed. At this time, the operator can feel a sound or vibration called " tick ", in which the engagement of the screw is shifted. Therefore, even if the tightening is not performed particularly, the excessive tightening signal is received and the tightening operation is stopped and the proper tightening is completed.

Next, an attachment structure (hereinafter, simply referred to as " attachment structure ") of the door handle according to the first embodiment of the present invention will be described with reference to Figs. 1 to 7. Fig. Fig. 1 is a view for explaining a situation in which an attachment structure is mounted on a door, Fig. 2 is a partially broken away view showing a state in which a screw is screwed into a screw hole for screw connection of the boss, Fig. 3 is a perspective view Fig. 4 is a simplified view showing an initial state in which a screw is threadedly engaged with a threaded screw hole of a boss, Fig. 5 is a simplified view showing a state in which a screw is engaged in a state in which a screw is tightened, Fig. 6 is a schematic view showing a state in which one of the screws of the screw is removed from the state of Fig. 5, Fig. 7 is a plan view showing a part of the attachment structure, . The shape of the pedestal body of Fig. 3 is different from that of Fig.

The attachment structure 10 includes two bosses 4 disposed on one outer side surface 61 of the door 6 and having a threaded screw hole 44 (not shown in Fig. 1) A first pedestal 1 having a circular plate shape in which attachment holes 12 are formed and a second pedestal 1 disposed on the other outer side surface 62 of the door 6 in correspondence with the first pedestal 1, Shaped second base (2) having two screw insertion holes (22) and a second handle attachment hole (21) formed at positions opposed to the first handle attachment hole (12) Is screwed into the threaded screw hole 44 of the boss 4 through the threaded insertion hole 22 of the second base 2 and is screwed into the first base 1 and the second base 2 is disposed on the outer surface of the first pedestal 1 and the other is disposed on the outer surface of the second pedestal 2 and the first pedestal 1 Through the handle attachment holes 12 and 21 of the second seat 2 and the second seat 2, And a pair of door handles 8 (not shown in Fig. 1) connected to each other, and an elongated hole 43 extending in the axial direction is formed in the tubular portion of the boss 4.

1, the first pedestal 1 is provided with a boss 41 having two heads 42 having threaded screw holes 44, a first handle attachment hole 12, Shaped base member 11 having boss attachment holes 13 on both sides of which a head is attached and the boss 41 with a head and the base body 11 are members different from each other, The boss 41 and the pedestal body 11 are integrally formed at the stage of molding so that the boss 41 and the pedestal body 11 are integrally formed at the stage of molding It is acceptable. In this case, the boss head 42 may be omitted (see FIG. 8).

The first pedestal 1 is connected to the second pedestal 2 and functions as a joining member for positioning the door of the door handle and attaching the door handle. The shape of the first counter seat 1 is not limited to the disc shape, but may be rectangular, elliptical, or the like. The position of the first handle attaching hole 12 formed in the first pedestal 1 is not limited to the center position as in the present embodiment, and for example, if it is a rectangular frame, It may be. The number of screw-threaded screw holes 44 is not limited to the above-mentioned two, but is determined according to the number of threads 3 used. For example, in the case where the shape of the first pedestal 1 is a rectangular frame, the screw hole for screw connection may be formed at four corners of the frame. In this case, four screws 3 are used.

The second pedestal 2 is connected to the first pedestal 1 and functions as a joining member for positioning the door of the door handle and attaching the door handle. The shape of the second pedestal 2 is generally the same as the shape of the first pedestal 1. The position of the second handle attachment hole 22 formed in the second pedestal 2 is not limited to the center position as in this example. For example, if the frame is a rectangular frame, It may be. The number of screw-threaded screw holes 44 is not limited to the above-mentioned two, but is determined according to the number of threads 3 used. For example, in the case where the shape of the second pedestal 2 is a rectangular frame, the threaded screw hole may be formed at four corners of the frame. In this case, four screws 3 are used.

The number of the bosses 4 is two in the present embodiment, but the present invention is not limited to this, and one or three or more bosses 4 are used as needed, as in the case of using the screws 3. The material of the boss 4 may be the same as that used in a conventional attachment structure, and may be a metal, a resin, or a composite material of resin and metal. That is, the hardness of the boss 4 may be a hardness at which a thread is formed by a tab. When the material of the boss is resin, the bending elastic modulus is preferably 1.2 GPa or more, more preferably 1.6 to 10 GPa, from the viewpoint of obtaining a sufficient tightening strength and an elastic force by forming a long hole. Particularly, when the bending elastic modulus is 1.OGPa or less, there is a high possibility of not producing an actuating sound of " tick ", and in the case of 0.5 GPa or less, in addition to the problem of the operating sound, Function. Examples of the resin include polyacetal and nylon. Specific examples thereof include Duracon SF10, a flexural modulus of 1.8 GPa (manufactured by Polyplastics Co.), UF-20H manufactured by Mitsubishi Plastics Corporation, a flexural modulus of 1.6 GPa (manufactured by Mitsubishi Engineering Plastics) , TN500ST30 having a flexural modulus of 2.2 GPa (manufactured by Takayasu Co., Ltd.), TN500SI2 having a bending modulus of 2.000 GPa (manufactured by Takayasu Co., Ltd.) and the like.

The elongated hole 43 is formed so as to extend in the axial direction on the peripheral surface of the cylindrical boss 4 and penetrate the circumferential surface portion of the formed portion in the direction perpendicular to the axial direction. The length l ₂ from the boss end 431 on the screw insertion side to the end 433 of the elongated hole on the opposite side of the boss end from the boss end 431 on the screw insertion side end and is greater than the length (l ₁₎ to the end (434) for screwing the screw on the opposite side. If the length l ₂ is equal to or less than the length l ₁ , there is a possibility that the thread of the boss 4 or a part thereof is broken. A thread for screwing may be provided on the inner peripheral portion of the boss 4 in a region from the boss end 431 on the screw insertion side to the end 432 of the long hole on the boss end side, Suitable. In the case where the screw thread is formed in the area, there is a possibility that the thread formed in the area is damaged by tightening the screw. Even if such breakage is present, there is no problem because the screw for threading at the root side of the boss is effective as compared with the area. In the case where the screw is not formed in the area, the inner diameter of the boss in the area may be larger than the outer diameter of the screw. As a result, the insertion of the screw is smooth.

A preferable range of the long length (l ₂ -l ₃₎ of the hole (43) is 1.5 to 3.0 times the length (effective screw length) for screwing screws or l ₁ (l ₁ -l _3). The width w of the elongated hole 43 may be of a size that can be molded, and it is usually sufficient that the width w is about 0.2 to 0.7 mm. In addition, the number of the long holes 43 formed in one boss 4 is not limited to one in the present embodiment, but may be two or more. In the case of forming a plurality of elongated holes in one boss 4, it is preferable to form the elongated holes in the circumferential direction from the point that a sufficient fastening strength can be obtained.

The length l ₃ is not particularly limited, and is suitably determined in the range of 0.5 to 3.0 mm. The effective length l ₁ or (l ₁ -l ₃ ) of the screw for screw connection formed on the boss 4 is appropriately determined depending on the attachment strength or the size of the attachment structure, but is usually 5 to 15 mm, 12 mm, especially 10 mm. When the effective length l ₁ or (l ₁ -l ₃ ) of the screw for screw engagement is in the above range, the screw 3 is screwed in this range, so that sufficient tightening strength can be obtained. The shape of the elongated hole 43 is not limited to the long elliptical shape shown in Figs. 2 and 3, and may be a long rectangular shape with both ends having both corners.

The screw 3 has a screw head 31 and is formed with at least a male thread having a length corresponding to a length l ₁ or a length (l ₁ -l ₃ ) of a screw for screw threading from the tip end of the screw body toward the base end , It is preferable that a male thread is formed over the entire length, as in this example. The number of the screws 3 to be used is appropriately determined depending on the attachment strength or the size of the attachment structure, but is not limited to two in this example, and may be one or three or more.

In the attachment structure 10, the handle for the door is not particularly limited, and examples thereof include a handle for a sliding door, a lever handle, and a push-pull handle. 1 and 7, the handle attachment hole is formed at the position of the door 6 facing the inner side of the mounting empty space of the lock body 71, (Not shown in Fig. 1), an unlocking lever handle 8 corresponding to the lever-handle-type latch lock 72 is inserted into the insertion hole for inserting the lock 7 into the handle attachment hole And is attached rotatably by the first pedestal 1 and the second pedestal 2, for example. The lock body 71 is provided with two boss insertion holes 74 and an insertion hole 75 of the lever handle connecting rod 9.

Next, a method of tightening the screw 3 in the attachment structure 10 will be described. The lock body 71 is attached to the door 6 and the first pedestal 1 and the second pedestal 2 are pushed from both sides of the door 6 so that the headed boss 4 Insert it into the hole (13) with the boss attached. Next, the screw 3 is screwed into the threaded screw hole 44 of the boss 4 headed via the screw insertion hole 22 of the second seat 2 and screwed with the screwdriver A (Fig. 4). The boss 4 can not withstand the tightening force and is slightly deformed from the center of the elongated hole 43 so that the screw 3 is screwed into the threaded fitting female screw at least three times, (Fig. 5). When the screws are further tightened, the elongated holes 43, which can not withstand the tightening, are deformed as a whole, and all the threads are inflated for a moment, whereby the meshing of the screws is shifted (Fig. 6). Then, the engagement of the screw is fixed at a position where the screws are retreated by the elastic force of the elongated hole 43, so that the first pedestal 1 and the second pedestal 2 are integrally connected. The boss 4 can not withstand the tightening force and the elongated hole 43 is formed in an instant in the radial direction so that the engagement of the screw is shifted and then the engagement of the screw This is fixed at the position of the backward one. As described above, when the clamping force becomes a certain value or more, the elongated hole 43 is formed, and more torque than necessary is missed. When the engagement of the screw is fixed at the position where the screw is retracted by the elastic force of the elongated hole 43, the worker can feel a sound or vibration called " tick ", so that the operator can receive an excessive tightening signal do. The optimum tightening is a state in which the threads of the screw 3 are completely engaged with the threaded portion of the boss 4 for screw connection.

Next, an attachment structure of the door handle according to the second embodiment will be described with reference to Fig. 8 is a view showing a state in which the screw 103 is screwed into the screw hole for screw connection of the boss 4; In Fig. 8, the same constituent elements as those in Fig. 1 and Fig. 2 are denoted by the same reference numerals, and the description thereof will be omitted, and different points will be mainly described. 8, the difference from FIG. 2 is that the attachment structure 10a of the door handle further includes a cylindrical cover member 47 fitted to the boss 4, 4) are directly fixed to the first pedestal 1. As the material of the cover member 47, metal or resin can be used. When both the material of the cover member 47 and the material of the boss 4 are made of resin, the sum of the bending elastic moduli Preferably 1.2 GPa or more, and more preferably 1.6 to 10 GPa. By the provision of the cover member 47, the boss 4 may be made of a resin having a flexural modulus of less than 1.2 GPa, for example. As the suitable cover member 47, it is possible to use one having the same length as the screw hole for screw connection, or a slit or a long hole. The slit may be an entire length slit (split groove) extending over the entire length as shown in Fig. 8, or a partial slit extending only to one end at one end.

The attachment structure of the present invention can give a proper tightening force without particularly consciousness in order to prevent excessive tightening of the screws when the door handle is attached to the door. Therefore, the boss is not broken, the door surface is not deformed, and the installation work is also facilitated.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a view for explaining a situation in which an attachment structure according to the first embodiment is mounted on a door; Fig.

Fig. 2 is a view showing a state in which a screw is screwed into a screw hole for screw connection of the boss; Fig.

3 is a perspective view from the side of the boss.

Fig. 4 is a schematic view showing an initial state in which a screw is screwed into a threaded screw hole of a boss; Fig.

5 is a schematic view showing a state in which a screw is engaged in a state in which a screw is tightened and an elongated hole is formed;

Fig. 6 is a simplified view showing a state in which one of the screws is removed from the state of Fig. 5; Fig.

7 is a plan view showing a part of an attachment structure in cross section;

Fig. 8 is a view showing a state in which a screw is threadedly engaged with a threaded screw hole of a boss in the second embodiment; Fig.

9 is a view for explaining a situation in which a conventional attachment structure for a door handle is mounted, showing a state in which a screw is screwed into a screw hole for screw connection of the boss;

Description of the Related Art

1 First pedestal 2 Second pedestal 2

3 Screw 4 Boss

6 Door 8 lever handle

10 Attachment Structure of Handle for Door 12 First Handle Mounting Hole

13 Hole with head boss 21 1st handle mounting hole

22 Screw insertion hole 31 Screw head

41 Boss Body 42 Boss Head

43 Long hole 44 Screw mounting hole

47 Cover member 61 One side outer surface of the door

62 outer surface of the other side of the door 71 lock body

A driver

l ₂ Length from the boss end to the end of the long hole on the opposite side of the boss end

l ₁ Length from the end of the boss to the end of the screw for screw connection opposite to the boss end

Claims (7)

A first pedestal disposed on an outer surface of one side of the door and having a screw for attaching a screw and a boss having the hole and a first handle attachment hole respectively and a second seat on the other side of the door corresponding to the first seat A second pedestal disposed on a side surface of the second pedestal and having a screw insertion hole and a second handle attachment hole at positions corresponding to the boss and the first handle attachment hole, A screw that is threadedly engaged with a threaded screw hole of the boss to connect the first pedestal and the second pedestal integrally with each other, one of the screws being disposed on an outer surface of the first pedestal, 2, and a pair of door handles connected to each other through the handle attachment holes of the first pedestal and the second pedestal, And an elongated hole extending axially from the boss to a side opposite to the boss end from a position spaced apart from the end of the boss by a predetermined length l ₃ , The length l ₂ from the boss end of the boss end to the end of the elongated hole on the opposite side of the boss end is set to the length l from the boss end of the screw insertion side to the end of the screwing screw ₁ ). ≪ / _RTI > The method according to claim 1, Wherein the first pedestal comprises a pedestal body having a boss with a head having a threaded screw hole and a boss attachment hole with a first handle attachment hole and a head, Wherein the main body is a different member. The method according to claim 1 or 2, Wherein the boss is made of metal or resin. The method of claim 3, Wherein the boss is a resin having a flexural modulus of 1.2 GPa or more. The method according to claim 1 or 2, And the length of the elongated hole is 1.5 to 3.0 times the length of the screw for screw connection. The method according to claim 1 or 2, Wherein no screws for screwing are formed on the boss extending from the boss end on the screw insertion side to the end of the long hole on the boss end side. The method according to claim 1 or 2, Further comprising a cover member fitted to the boss.

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