JP2008174928A - Mounting structure of handle for door - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a mounting structure of a handle for a door capable of preventing screws from being excessively tightened. <P>SOLUTION: This mounting structure 10 comprises a first pedestal 1 disposed on one outer surface 61 of the door 1 and having a boss 4 with screw holes for screwing, a second pedestal 2 so disposed on the outer surface 62 of the door 6 as to correspond to the first pedestal 1 and having screw insertion holes 22 at the positions opposed to the boss, screws 3 screwed with the screw holes for screwing of the boss 4 through the screw insertion holes 22 of the second pedestal 2 and connecting the first pedestal 1 and the second pedestal 2 to each other, and a pair of door handles one of which 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 connected to each other through the handle mounting holes of the first pedestal 1 and the second pedestal 2. The boss 4 has a slit 43 of such a length that exceeds the screws for screwing, formed from the boss end 44 on the screw insertion side along the axial direction. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a door handle mounting structure in which, for example, a lever handle is rotatably mounted at a predetermined position of a door.

  An example of a conventional door handle mounting structure, as shown in FIG. 8, is a boss head having a screw threading screw hole (not visible in FIG. 8) disposed on one outer surface 161 of the door 106. The boss 104 with 141, the first handle mounting hole 112, the disk-shaped base body 101 (first base) provided with the two headed bosses 104 mounting holes 113, and the door 106 corresponding to the base body 101 A second pedestal 102 provided with two screw insertion holes 122 and a second handle attachment hole 121 at positions opposite to the boss 104 and the first handle attachment hole 112, respectively, disposed on the other outer surface 162 of Two screws 103 that are screwed into the screw holes for screwing of the boss 104 through the screw insertion holes 122 of the two pedestals 102 and integrally connect the pedestal main body 101 and the second pedestal 102, Is disposed on the outer surface of the pedestal main body 101 and the other is disposed on the outer surface of the second pedestal 102 and is connected to each other via the handle mounting holes 112 and 121 of the pedestal main body 101 and the second pedestal 102. Door handle.

In such a conventional door handle mounting structure 100, the headed boss 104, the pedestal body 101, and the second pedestal 102 function as a coupling member for positioning the door handle in the door and attaching the door handle. To do. Attachment of the headed boss 104, the pedestal main body 101, and the second pedestal 102 to the door 106 is performed by screwing the screw 103 into the screw screwing screw hole of the boss 104. This screwing is performed by rotating the driver A in the tightening direction. The more the driver A is rotated in the tightening direction, the more the base body 101 becomes the door surface 161 and the second base 102 becomes the door surface. It is attracted to 162 and firmly fixed.
JP 2002-129796 A (Claim 1)

  However, the tightening strength of the door handle attachment structure 100 depends on the operator's feeling. Therefore, depending on the operator, there is a case where the boss 104 is damaged in order to secure the fixing. In this case, the boss 104 may be damaged. In order to prevent the boss 104 from being damaged, a resin having a high bending elastic modulus or a metal having a high mechanical strength may be used as the material of the boss 104. However, even if such a material is used, the operator may tighten more strongly in order to secure the fixing, and in this case, there is a problem that deformation such as a dent of the door occurs.

  Accordingly, an object of the present invention is to provide a door handle mounting structure that prevents overtightening of screws.

  In such a situation, the present inventor has intensively studied, and as a result, if a slit having a length exceeding the screw threading screw is formed along the axial direction from the boss end on the screw insertion side, the screw is overtightened. Has been found to be able to be prevented, and the present invention has been completed.

  That is, the present invention provides a first pedestal provided with a boss having a screw threading screw hole and a first handle mounting hole disposed on one outer surface of the door, and a door corresponding to the first pedestal. A second pedestal provided with a screw insertion hole and a second handle attachment hole at positions opposed to the boss and the first handle attachment hole, respectively, and a screw insertion of the second pedestal A screw that is screwed into the screw hole for screwing the boss through the hole and integrally connects the first pedestal and the second pedestal, and one is disposed on the outer surface of the first pedestal and the other is A mounting structure including a pair of door handles disposed on an outer surface of the second pedestal and connected to each other through handle mounting holes of the first pedestal and the second pedestal; Screw the boss along the axial direction from the boss end on the screw insertion side. There is provided a mounting structure of the door handle, characterized in that the formation of the length of the slit exceeding the length of the coupling screw.

  In the present invention, the first pedestal comprises a headed boss having a screw threaded screw hole, and a pedestal main body having a first handle mounting hole and a headed boss mounting hole. The pedestal main body is a separate member, and provides the door handle mounting structure.

  Further, the present invention provides the door handle mounting structure, wherein the boss is made of metal or resin.

  Further, the present invention provides the door handle mounting structure, wherein the boss is made of a resin having a flexural modulus of 1.8 GPa or more.

  The present invention also provides the door handle mounting structure, wherein the slit has a length 1.5 to 2.5 times that of the screw threading screw. .

  In addition, the present invention further includes a sheath member having a length equal to or longer than the screw threading screw length, a slit formed in the entire length of the screw, and fitted to the boss. An attachment structure for a door handle is provided.

  In the mounting operation of the door handle mounting structure of the present invention, if the screw is tightened too much, the boss side loses to the tightening force, and the slit is instantaneously opened in the radial direction, so that the screw is disengaged, and then the slit The screw is fixed at the position where the engagement of the screw is returned by one spring. If further tightening is performed, the boss side loses the tightening force in the same manner as described above, and the slit is instantaneously opened in the radial direction, so that the screw is disengaged, and then the screw is rebounded by the spring force of the slit. Fixed in position. That is, when the tightening force exceeds a certain level, the slit opens and more torque than necessary is released. At this time, the operator can feel a “click” sound and vibration that disengages the screw, so that even if it is not carefully tightened, it will receive an over-tightening signal, stop the tightening operation, and Tightening is complete.

  Next, a door handle mounting structure (hereinafter also simply referred to as “mounting structure”) according to the first embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a diagram for explaining a state in which the mounting structure is assembled to a door, FIG. 2 is a diagram showing a state in which a screw is screwed into a screw screw hole of a boss, and FIG. 3 is a screw screw screw screw hole of the boss. FIG. 4 is a simplified diagram showing the initial state of screw engagement, FIG. 4 is a simplified diagram showing the engagement state of the screw when the screw is tightened and the slit is opened, and FIG. 5 is a state in which a screw thread is returned and engaged from the state of FIG. FIG. 6 is a plan view showing a part of the mounting structure in cross section, and FIG. 8 is a diagram for explaining a state of assembling a conventional door handle mounting structure.

  The mounting structure 10 is a disc disposed on one outer surface 61 of the door 6 and provided with two bosses 4 having screw screwing screw holes 44 (not visible in FIG. 1) and first handle mounting holes 12. The first pedestal 1 and the two screws at positions opposite to the two bosses 4 and the first handle mounting hole 12 disposed on the other outer surface 62 of the door 6 corresponding to the first pedestal 1. The disc-shaped second base 2 provided with the insertion hole 22 and the second handle attachment hole 21 and the screw insertion screw hole 44 of the boss 4 are screwed through the screw insertion hole 22 of the second base 2. A screw 3 that integrally connects the first pedestal 1 and the second pedestal 2, one 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. Via the handle attachment holes 12 and 21 of the base 1 and the second base 2, they are connected to each other. 1 is a mounting structure including a pair of door handles 8 (not shown in FIG. 1). The length of a screw threading screw extends from the boss end 44 on the screw insertion side to the boss 4 along the axial direction. The slit 43 having a length exceeding the length is formed.

  In FIG. 1, the first base 1 includes two bosses 41 with heads 42 having screw screw holes 44, a first handle mounting hole 12, and two headed boss mounting holes 13 on both sides. The head-shaped boss 41 and the pedestal main body 11 are separate members, and the cylindrical boss extends from both sides of the pedestal main body 11 to the inside (door surface direction). Although incorporated, the present invention is not limited to this, and the headed boss 41 and the pedestal main body 11 may be integrated at the stage of molding. In this case, the boss head 42 may be omitted.

  The first pedestal 1 is connected to the second pedestal 2 and functions as a coupling member for positioning the door handle at the door and attaching the door handle. The shape of the first pedestal 1 is not limited to a disk shape, and may be a quadrangle, an ellipse, or the like. Further, the position of the first handle mounting hole 12 formed in the first pedestal 1 is not limited to the center position as in this example. For example, in the case of a rectangular frame, the position is slightly above the center. May be. Further, the number of screw screw holes 44 formed is not limited to the above two, but is determined according to the number of screws 3 used. For example, when the shape of the first pedestal 1 is a square frame, the screw threading screw holes may be formed at the 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 coupling member for positioning the door handle at the door and attaching the door handle. The shape of the second pedestal 2 is usually the same as the shape of the first pedestal 1. Further, the position of the second handle mounting hole 22 formed in the second pedestal 2 is not limited to the center position as in this example. May be. Further, the number of screw screw holes 44 formed is not limited to the above two, but is determined according to the number of screws 3 used. For example, when the shape of the second pedestal 2 is a quadrangular frame, the screw threading screw holes may be formed at four corners of the frame. In this case, four screws 3 are used.

  Although the number of the bosses 4 is two in this example, the number of the bosses 4 is not limited to this, and one or three or more bosses 4 are used as necessary, similarly to the number of the screws 3 used. The material of the boss 4 may be the same as that used in the conventional mounting structure, and examples thereof include a metal, a resin, or a composite of resin and metal. In other words, the hardness of the boss 4 may be any hardness as long as the screw can be cut with a tap. Further, when the boss material is resin, the flexural modulus is preferably 1.8 GPa or more, and preferably 2.0 GPa or more from the viewpoint of obtaining sufficient tightening strength and spring force due to slit formation. Examples of the resin include polyacetal and nylon. Specific examples include Duracon “M90-44”; flexural modulus 2.6 GPa (manufactured by Polyplastics), Iupital “F20”; flexural modulus 2.6 GPa ( Mitsubishi Engineering Plastics), Tanadine “TN500”; flexural modulus 2.5 GPa (manufactured by Takayasu), Tanadine “TN710”; flexural modulus 2.9 GPa (manufactured by Takayasu).

Bis screw effective length _{l 1} of the coupling screw to be formed in the boss 4 is appropriately determined by such as the size of the mounting strength and mounting structure, typically 5 to 15 mm, preferably 8 to 12 mm, in particular 10mm is there. If the effective length l ₁ is the range of bis screwing screw, screw 3 if screwed in this range, sufficient tightening strength.

Boss 4 slits 43 formed in are those having a length l ₂ which exceeds the length l ₁ of the screw screwing screw along the screw insertion side of the boss end portion 431 in the axial direction. When the length l _{2 of the} slit is equal to or shorter than the length l _{1 of the} screw for screwing, tightening with the screw 3 cannot be prevented. A preferable range of the length l ₂ of the slit 43 is 1.5 to 2.5 times the length of the screw threading screw (effective screw length) l ₁ . Moreover, the width w of the slit 43 should just be a dimension which can be shape | molded, and about 0.2-0.7 mm is sufficient normally. Further, the number of slits 43 formed in one boss 4 is not limited to one in this example, and may be two or more. In the case where a plurality of slits are formed in one boss 4, it is preferable to form the slits at equal pitches in the circumferential direction because sufficient tightening strength can be obtained.

Bis 3 are those having a screw head 31, which length of the male screw corresponding to the length l ₁ of at least bis screwing screw toward the proximal end from the distal end of the screw main body is switched off, Preferably, a male screw formed over the entire length as in this example is suitable. The number of screws 3 used is appropriately determined depending on the mounting strength, the size of the mounting structure, etc., but is not limited to two in this example, and may be one or three or more.

  In the attachment structure 10, the door handle is not particularly limited, and examples thereof include a sliding door handle, a lever handle, and a push-pull handle. As the lever handle, for example, as shown in FIGS. 1 and 6, a handle attachment hole is formed through the thickness of the door 6 at a location of the door 6 that faces the back of the mounting space of the lock body 71. However, the unlocking lever handle 8 corresponding to the lever handle type latch lock 72 is rotated by the first base 1 and the second base 2 in the handle mounting hole in the insertion space for the lock 7 (not shown in FIG. 1). The thing which can be attached is mentioned. The lock body 71 has two boss insertion holes 74 and an insertion hole 75 for the lever handle connecting rod 9.

Next, a method for tightening the screw 3 in the mounting structure 10 will be described. The lock body 71 is attached to the door 6, the first base 1 and the second base 2 are applied from both sides of the door 6, and the headed boss 4 is inserted into the headed boss mounting hole 13. Next, the screw 3 is screwed into the screw threading screw hole 44 of the headed boss 4 through the screw insertion hole 22 of the second pedestal 2 and tightened with the driver A (FIG. 3). When the tip of the screw 3 is tightened beyond the length l ₁ of the screw for screw threaded engagement, it causes boss 4 side lost the clamping force, the slit 43 is a momentarily open it in the radial direction, the meshing is disengaged screw ( FIG. 4). Next, the spring force of the slit 43 is fixed at a position where the engagement of the screw is returned by one mountain, and the first pedestal 1 and the second pedestal 2 are integrally connected (FIG. 5). If further tightening is performed, similarly, the boss 4 side is defeated by the tightening force, and the slit 43 is instantaneously opened in the radial direction, so that the screw is disengaged. Fixed at the returned position. As described above, when the tightening force exceeds a certain level, the slit 43 opens, and more torque than necessary is released. When the screw engagement is fixed at the position where the engagement of the screw is returned by the spring force of the slit 43, the operator can feel a clicking sound and vibration, so that an over-tightening signal is required without particularly careful tightening. Will receive. Incidentally, appropriate fastening force is sufficient for the male screw of the screw 3 is engaged to the length l ₁ of the screw for screw threaded engagement.

Next, a door handle mounting structure according to the second embodiment will be described with reference to FIG. FIG. 7 is a view showing a state in which the screw 103 is screwed into the screw screw hole of the boss 4. In FIG. 7, the same components as those in FIGS. 1 and 2 are denoted by the same reference numerals, description thereof is omitted, and different points will be mainly described. That is, FIG. 7 is different from FIG. 2 in that the door handle mounting structure 10a has a screw threading length ₁₁ or more and a slit 471 is formed in the entire length. Further, a sheath member 47 fitted to the boss 4 is further provided. As the material of the sheath member 47, a metal or resin material can be used. When both the material of the sheath member 47 and the material of the boss 4 are made of resin, the total bending elastic modulus of both resins is 1 .8 GPa or more is sufficient. By installing the sheath member 47, the boss 4 made of a resin having a bending elastic modulus of less than 1.8 GPa can be used, for example.

  Since the attachment structure of the present invention prevents excessive tightening of screws when attaching various door handles to the door, an appropriate tightening force can be applied without being particularly conscious. For this reason, the boss is not damaged, the door surface is not deformed, and the installation work is facilitated.

The figure explaining the condition which attaches the attachment structure in a 1st embodiment to a door. The figure which shows the state in which a screw is screwed in the screw hole for screwing of a boss | hub. The simplification figure which shows the initial state in which a screw | thread screwed in the screw hole for screw | thread screwing of a boss | hub. FIG. 6 is a simplified diagram showing a state where a screw is engaged in a state where tightening of a screw is advanced and a slit is opened. FIG. 5 is a simplified diagram illustrating a state in which a screw thread is returned and meshed from the state of FIG. 4. The top view which showed a part of attachment structure in the cross section. The figure in the 2nd Embodiment which shows the state in which the screw is screwed into the screw hole for screwing of the boss. The figure explaining the condition which assembles the attachment structure of the conventional door handle.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 1st base 2 2nd base 3 Screw 4 Boss 6 Door 8 Lever handle 10 Door handle attachment structure 12 First handle attachment hole 13 Head-attached boss attachment hole 21 First handle attachment hole 22 Screw insertion Hole 31 Screw head 41 Boss body 42 Boss head 43 Slit 44 Screw screwing screw hole 47 Sheath member 61 One outer surface of the door 62 Other outer surface of the door 71 Lock body 471 Slit in the sheath A Driver l ₁ Screw for screwing Length l ₂ slit length w slit width

Claims (6)

  A first pedestal provided with a boss having a screw threading screw hole and a first handle mounting hole respectively disposed on one outer surface of the door, and on the other outer surface of the door corresponding to the first pedestal; A second pedestal provided with a screw insertion hole and a second handle attachment hole at positions opposed to the boss and the first handle attachment hole, and the boss through the screw insertion hole of the second pedestal. A screw that is screwed into a screw threading screw hole and integrally connects the first pedestal and the second pedestal, and one is arranged on the outer surface of the first pedestal, and the other is the second pedestal. A mounting structure comprising a pair of door handles disposed on the outer surface and connected to each other through the handle mounting holes of the first pedestal and the second pedestal. Exceed the length of the screw threading screw along the axial direction from the boss end of the screw. Mounting structure of the door handle, characterized in that the formation of the length of the slit that.   The first pedestal includes a headed boss having a screw threaded screw hole, and a pedestal main body having a first handle mounting hole and a headed boss mounting hole. The headed boss and the pedestal main body are respectively The door handle mounting structure according to claim 1, wherein the door handle mounting structure is a separate member.   3. The door handle mounting structure according to claim 1, wherein the boss is made of metal or resin.   4. The door handle mounting structure according to claim 3, wherein the boss is made of a resin having a flexural modulus of 1.8 GPa or more.   The door handle mounting structure according to any one of claims 1 to 4, wherein the length of the slit is 1.5 to 2.5 times the screw threading screw length. .   3. The sheath member according to claim 1, further comprising a sheath member having a length equal to or longer than the screw threading screw length, a slit formed in the entire length of the screw, and fitted to the boss. The door handle mounting structure.

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