JP4507214B2 - Door handle mounting structure - Google Patents

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.

  As shown in FIG. 9, the conventional door handle mounting structure is a boss head having a screw threaded screw hole (not visible in FIG. 9) 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 protect the positioning of the door handle on the door and the sliding portion of the door handle. Functions as a member. 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 this situation, as a result of intensive studies, the present inventors have found that if a long hole having a predetermined length is formed in the cylindrical portion of the boss, over-tightening of the screw can be prevented and the present invention is completed. It came to.

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 a screw hole for screwing the boss through the 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 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; While forming a long hole extending in the axial direction in the cylindrical portion of the boss, Scan insertion side from the boss end to the opposite end of the elongated hole and the boss end lengths (l _2), bis opposite the said boss end portion from the boss end of the screw insertion side It is provided that the length to the end of the screw for screwing (l ₁ ) is greater.

  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.

  The present invention also provides the door handle mounting structure, wherein the boss is made of a resin having a flexural modulus of 1.2 GPa or more.

  Further, the present invention provides the door handle mounting structure, wherein the length of the elongated hole is 1.5 to 3.0 times the screw threading screw length. is there.

  Further, in the present invention, the door handle is characterized in that a screw threading screw is not formed on a boss extending from the boss end on the screw insertion side to the end of the elongated hole on the boss end side. Mounting structure.

  The door handle mounting structure is further provided with a sheath member fitted to the boss.

  In the mounting operation of the door handle mounting structure of the present invention, if the screw is tightened excessively, the boss side loses the tightening force, and the elongated hole is deformed so as to expand in the direction perpendicular to the axial direction, and the screw meshes. Then, the screw is fixed at a position where the engagement of the screw that can take up the force is returned. If further tightening is performed, the boss side loses the tightening force as described above, and the long hole is deformed and spreads in the radial direction for a moment, so that the screw is disengaged, and then the screw is disengaged by the spring force of the long hole. It is fixed at the position where the mountain returns. That is, when the tightening force exceeds a certain level, the long hole 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 careful tightening is not performed, an over-tightening signal is received, the tightening operation is stopped, 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 partially broken view showing a state in which a screw is screwed into a screw threading screw hole of a boss, and FIG. 3 is a view from the back side of the boss. FIG. 4 is a simplified diagram showing an initial state in which the screw is screwed into the screw threading screw hole of the boss, and FIG. 5 is a simplified diagram showing the meshing state of the screw when the screw is tightened and the long hole is opened. FIGS. 6 and 6 are simplified views showing a state in which a screw thread returns from the state of FIG. 5, FIG. 7 is a plan view showing a part of the attachment structure in section, and FIG. 9 is a conventional door handle attachment structure. It is a figure explaining the condition which attaches a body. The shape of the pedestal main body in FIG. 3 is different from that in FIG.

  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. A mounting structure comprising a pair of door handle 8 which is (not shown in FIG. 1) and is obtained by forming a long hole 43 extending in the axial direction in the cylindrical portion of the boss 4.

  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 (see FIG. 8).

  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. 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 second pedestal 2 is a quadrangular frame, the screw threading screw holes may be formed at the 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. When the material of the boss is resin, it is preferable that the flexural modulus is 1.2 GPa or more, preferably 1.6 to 10 GPa, from the viewpoint of obtaining sufficient tightening strength and spring force by forming a long hole. In particular, when the flexural modulus is 1.0 GPa or less, there is a high possibility that an operation sound that does not generate a “click” will be generated. Further, when the bending elastic modulus is 0.5 GPa or less, in addition to the problem of the operation sound, Furthermore, the engagement of the screw thread becomes insufficient and the function of the boss cannot be performed. Examples of the resin include polyacetal and nylon. Specific examples include Duracon “SF10”; flexural modulus 1.8 GPa (manufactured by Polyplastics), Iupital “UR-20H”; flexural modulus 1.6 GPa ( Mitsubishi Engineering Plastics), Tanadine “TN500ST30”; flexural modulus 2.2 GPa (manufactured by Takayasu), Tanadine “TN500SI2”; flexural modulus 2.0 GPa (manufactured by Takayasu), and the like.

The long hole 43 is a peripheral surface of the cylindrical boss 4 and is formed so as to extend in the axial direction, and further penetrates a peripheral surface portion of the formed portion in a direction orthogonal to the axial direction. In the boss 4, the length (l ₂ ) from the boss end 431 on the screw insertion side to the end 433 of the long hole on the side opposite to the boss end is the same as the boss end 431 on the screw insertion side. Is larger than the length (l ₁ ) to the end 434 of the screw screw on the opposite side. If the length l ₂ is equal to or less than the length l ₁ , the boss 4 and some screw threads may be damaged. It should be noted that the inner peripheral portion of the boss 4 in the region from the boss end 431 on the screw insertion side to the end 432 of the long hole on the boss end side may or may not have a screw screw. It is preferable not to exist. When a screw threading screw is formed in the region, there is a possibility that the screw thread formed in the region is damaged by tightening the screw. Even if there is such breakage, there is no problem because the screw threading screw on the base side of the boss from the region is effectively present. If no screw screw is formed in the area, the inner diameter of the boss in the area may be larger than the outer diameter of the screw. This facilitates screw insertion.

A preferable range of the length (l ₂ -l ₃ ) of the long hole 43 is 1.5 to 3.0 times the length (effective screw length) l _{1 of the} screw screw thread (l ₁ -l ₃ ). It is. Moreover, the width (w) of the long hole 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 the long holes 43 formed in one boss 4 is not limited to one in this example, and may be two or more. When a plurality of long holes are formed in one boss 4, it is preferable to form them at equal pitches in the circumferential direction because sufficient tightening strength can be obtained.

The length (l ₃ ) is not particularly limited and is appropriately determined in the range of 0.5 to 3.0 mm. The effective length l ₁ or (l ₁ -l ₃ ) of the screw threading screw formed on the boss 4 is appropriately determined depending on the mounting strength, the size of the mounting structure, etc. Is 8 to 12 mm, particularly 10 mm. If the effective length l ₁ or (l ₁ −l ₃ ) of the screw screw is in the above range, the screw 3 is screwed in this range, and sufficient tightening strength can be obtained. The shape of the long hole 43 is not limited to the oblong shape as shown in FIG. 2 and FIG. 3, and may be a long rectangular shape having both ends at the ends.

The screw 3 has a screw head 31, and a male screw having a length corresponding to at least the length l ₁ or (l ₁ −l ₃ ) of the screw threading screw from the front end to the base end of the screw main body portion. It is cut, and preferably, a male screw is formed over the entire length as in this example. The number of screws 3 used is appropriately determined depending on the mounting strength, the size of the mounting structure, and the like, but is not limited to the 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 FIG. 1 and FIG. 7, a handle attachment hole is formed through the thickness of the door 6 at a location of the door 6 facing the back of the mounting space for 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 fastening 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. 4). If the male screw of the screw 3 is tightened in a state where three or more turns are screwed into the female screw for screw screwing, the boss 4 side loses to the tightening force, and the screw is deformed little by little from the center of the long hole 43, and the screw spreads. Follow the tightening of the screw (Fig. 5). When further tightened, the long holes 43 that cannot withstand the tightening are deformed as a whole, and all screw threads spread for a moment, thereby disengaging the screws (FIG. 6). Next, the spring force of the long hole 43 is fixed at a position where the engagement of the screw has returned one mountain, and the first pedestal 1 and the second pedestal 2 are integrally connected. If further tightening is performed, similarly, the boss 4 side is defeated by the tightening force, and the engagement of the screw is released by the momentary opening of the elongated hole 43 in the radial direction, and then the engagement of the screw is unified by the spring force of the elongated hole 43. It is fixed at the position where the mountain returns. As described above, when the tightening force exceeds a certain level, the long hole 43 opens, and more torque than necessary is released. When the screw engagement is fixed at the position where the screw engagement is returned by the spring force of the long hole 43, the operator can feel a clicking sound and vibration, so that excessive tightening can be performed without particularly careful tightening. You will receive a signal. The optimum tightening is in a state where the screw threads of the boss 4 are fully engaged with the screw threading portion of the boss 4.

  Next, a door handle mounting structure according to the second embodiment will be described with reference to FIG. FIG. 8 is a view showing a state in which the screw 103 is screwed into the screw screw hole of the boss 4. In FIG. 8, the same components as those in FIGS. 1 and 2 are denoted by the same reference numerals, description thereof will be omitted, and different points will be mainly described. That is, FIG. 8 differs from FIG. 2 in that in the door handle mounting structure 10 a, a cylindrical sheath member 47 fitted to the boss 4 is further provided and the boss 4 is connected to the first pedestal 1. It is in the point fixed directly. 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 .2 GPa or more, preferably 1.6 to 10 GPa. By installing the sheath member 47, for example, a boss 4 made of a resin having a flexural modulus of less than 1.2 GPa can be used. As the suitable sheath member 47, a member having the same length as that of the screw screw hole, or one having a slit or a long hole formed therein can be used. Examples of the slit include a full length slit (split groove) extending over the entire length as shown in FIG. 8 or a partial slit having only one end extending to the end.

  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 perspective view seen from the back side of the 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. The simplified diagram which shows the meshing | engagement state of the screw in the state which screw tightening advanced and the long hole opened. FIG. 6 is a simplified diagram showing a state in which a screw thread returns from the state of FIG. 5. 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 which shows the state which assembles | attaches the conventional attachment structure of the handle | steering_wheel for doors, and the state which the screw | thread engages with the screw hole for screw | thread screwing of a boss | hub.

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 main body 42 Boss head 43 Long hole 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 A Driver l _{2 From the} boss end to the boss end The length from the end of the long hole on the opposite side to 1 The length from the end of ₁ boss to the end of the screw threading screw on the opposite side of the boss

Claims (7)

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 including a pair of door handles disposed on an outer surface and connected to each other through respective handle mounting holes of the first pedestal and the second pedestal, and extending in the axial direction to the boss A long hole is formed and the bolt is inserted from the boss end on the screw insertion side. The length of the end to the opposite end of the elongated hole (l ₂₎ of the length of the boss end portion of the screw insertion side to the end portion of the screw for screw threaded engagement opposite the said boss end portion ( ₁ ) A door handle mounting structure characterized by being larger than (l ₁ ).   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 1.2 GPa or more.   The door handle attachment structure according to any one of claims 1 to 4, wherein the length of the long hole is 1.5 to 3.0 times the screw screw thread length. body.   6. A screw screwing screw is not formed on a boss extending from the boss end on the screw insertion side to the end of the elongated hole on the boss end side. The door handle mounting structure described in 1.   The door handle mounting structure according to claim 1, further comprising a sheath member fitted to the boss.

Images