JP2005059811A - Hinge structure of exterior part in automobile - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To easily bend an exterior part having an integral hinge to a desired shape. <P>SOLUTION: A side mud guard 11 comprises a long body 12, end plates 13 and 14 continued to both front and rear ends of the body 12, a mounting plate 15 continued to the lower edge part of the body 12, and the groove-shaped integral hinge 16 joining the body 12 to the mounting plate 15. A difference is provided between the bottom thicknesses of the integral hinge 16 at the groove bottoms 161, 162, and 163. The bottom thickness T1 of the integral hinge 16 at the groove bottom 161 corresponding to locking holes 151 and 152 and the bottom thickness T2 of the integral hinge 16 at the groove bottom 162 corresponding to an area near both end terminal part in the longitudinal direction of the side mud guard 11 are increased larger than the bottom thickness T2 of the integral hinge 16 at the groove bottom 163. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a hinge structure of an exterior part in an automobile.

  For example, Patent Documents 1 and 2 disclose side mud guards made of synthetic resin that protect the vehicle body from muddy water, pebbles, and the like splashed while the vehicle is running to prevent the vehicle body from becoming dirty or damaged. In the devices disclosed in Patent Literatures 1 and 2, an end plate portion (referred to as an attachment piece in Patent Literature 1) is formed on an end of the side mudguard body via an integral hinge. The end plate portion is folded back toward the terminal side of the side mudguard body by an integral hinge under the state where the side mudguard body is fixed to the rocker portion of the vehicle. In Patent Document 1, the folded end plate portion is screwed to the fender apron after the end plate portion side guide piece is fitted into the engagement portion on the side mudguard main body side. In Patent Document 2, the folded end plate portion is screwed to the end of the rocker portion after engaging the protruding portion on the end plate portion side with the protruding portion on the side mudguard main body side.

The configuration in which the end plate portion is connected to the side mudguard body via an integral hinge brings about an effect that the number of components can be reduced to reduce the number of assembling steps and costs.
JP 10-244968 A JP 2000-16342 A

  The greater the thickness at the groove bottom of the integral hinge, the more difficult it is to bend at the integral hinge. Further, the longer the side mudguard is, the more difficult it is to bend. If it is difficult to bend with the integral hinge, there is a risk that it will also bend at parts other than the integral hinge. If a part other than the integral hinge is bent, in Patent Document 1, the guide piece on the end plate part side cannot be fitted into the engaging part on the side mud guard body side, or in Patent Document 2, the protruding part on the side mud guard body side cannot be fitted. There is a possibility that the protrusion on the end plate part side cannot be locked. That is, at the time of assembly, there is a possibility that the end plate portion cannot be correctly folded and positioned at a predetermined assembly position.

  On the contrary, if the folding with the integral hinge is easy, the strength of the assembled side mudguard may be insufficient. That is, when the assembled side mudguard is loaded, the integral hinge is easily cut.

  An object of the present invention is to make it easy to bend an exterior part having an integral hinge such as a side mud guard in an automobile into a desired shape, and to secure necessary strength of the assembled side mud guard.

  To this end, the present invention is directed to an exterior part made of synthetic resin in an automobile. In the invention of claim 1, a groove-shaped integral hinge for bending and deforming from a shape at the time of molding to a shape at the time of assembly is provided. A difference was made in the bottom thickness of the groove bottom of the hinge.

  It is easy to bend at a portion where the bottom thickness of the groove bottom of the integral hinge is small, and a portion where the bottom thickness of the groove bottom of the integral hinge is large is easy to secure a trace when it is bent. That is, the exterior part provided with the integral hinge having a difference in the bottom thickness of the groove bottom can be easily bent into a desired shape (shape when assembled) as a whole. The part where the bottom thickness of the groove bottom of the integral hinge is large contributes to securing the strength of the assembled side mudguard.

  In the invention of claim 2, in claim 1, the bottom thickness of the integral hinge portion corresponding to the vicinity of the position of the locking portion of the exterior component locked to the assembly target in the shape at the time of assembly, It was larger than at least a part of the other part of the integral hinge.

  The load applied to the exterior part assembled to the assembly target spreads to the latching part, but the ripple path of the load spreading to the latching part is concentrated on the integral hinge part corresponding to the vicinity of the latching part. It's easy to do. If the bottom thickness of the integral hinge portion corresponding to the vicinity of the locking portion is increased, the integral hinge can be prevented from being broken due to the spread of the load.

  According to a third aspect of the present invention, in any one of the first and second aspects, the bottom thickness of the terminal portion of the integral hinge is made larger than at least a part of the other part of the integral hinge.

  The terminal part of the integral hinge is easy to break compared to other parts, but if the bottom thickness of the terminal part of the integral hinge is increased, the terminal part of the integral hinge can be prevented from breaking. .

  INDUSTRIAL APPLICABILITY The present invention has an excellent effect of facilitating bending in an automobile exterior part and ensuring the strength.

Hereinafter, a first embodiment of the present invention will be described with reference to FIGS.
As shown in FIG. 1, the side mudguard 11 made of synthetic resin is attached to the rocker portion 101 at the lower side of the vehicle body of the automobile 10. The total length of the side mudguard 11 is longer than the total length in the front-rear direction of the rocker portion 101 as an assembly target, and the terminals before and after the side mudguard 11 are extended beyond the terminals 102 and 103 of the rocker portion 101.

  As shown in FIG. 2, the side mudguard 11 includes a long main body 12, end plates 13 and 14 connected to both front and rear ends of the main body 12, a mounting plate 15 connected to a lower edge portion extending in the longitudinal direction of the main body 12, A groove-shaped integral hinge 16 that connects the main body 12 and the mounting plate 15 is provided. The length of the integral hinge 16 extends over the entire length of the body 12. The mounting plate 15 is formed with a pair of locking holes 151 and 152 serving as locking portions and a pair of screw-through holes 153 and 154 serving as locking portions.

  FIG. 3A shows the side mudguard 11 having a shape when molded (shape at the time of molding), and FIG. 3B shows a shape when it is bent by the integral hinge 16 and assembled to the rocker portion 101 ( The side mudguard 11 is shown. The side mud guard 11 having a molding shape is punched by opening a molding die (not shown) in the direction of arrow R. Double-sided tape 17 is affixed to the upper edge 121 of the body 12 of the molded side mudguard 11 that has been die-cut, and the upper edge 121 is adhered to the side surface of the rocker portion 101 via the double-sided tape 17. ing.

  FIG. 4A shows the back surface of the side mudguard 11 having a shape during molding. FIG. 4B is a cross-sectional view (a cross-sectional view taken along the line AA) of a part of the side mudguard 11 viewed along the length direction of the integral hinge 16. FIG. 4C is a cross-sectional view (cross-sectional view taken along the line B-B) of the side mud guard 11 viewed in the vicinity of the locking holes 151 and 152 so as to be orthogonal to the length direction thereof. FIG. 4D is a cross-sectional view (cross-sectional view taken along the line C-C) of the side mud guard 11 viewed along both end portions in the length direction of the side mud guard 11 so as to be orthogonal to the length direction thereof. is there. FIG. 4 (e) is a cross-sectional view (DD line cross-sectional view) of the side mud guard 11, broken along the central portion in the length direction of the side mud guard 11 so as to be orthogonal to the length direction thereof. .

  As shown in FIGS. 4B, 4 </ b> C, and 4 </ b> D, there is a difference in the bottom thicknesses of the groove bottoms 161, 162, and 163 of the integral hinge 16. The bottom thickness T1 of the groove bottom 161 of the integral hinge 16 corresponding to the locking holes 151 and 152 and the bottom thickness T2 of the groove bottom 162 of the integral hinge 16 corresponding to the screw through holes 153 and 154 are the other integrals. It is larger than the bottom thickness T3 of the groove bottom 163 of the hinge 16. In other words, the depth of the groove bottom 161 and the depth of the groove bottom 162 at the end portions 164 and 165 of the integral hinge 16 are smaller than the depth of the groove bottom 163. In this embodiment, T1 = T2.

  The fact that the groove bottom 161 of the integral hinge 16 corresponds to the locking holes 151 and 152 means that the locking holes 151 and 152 are viewed in the direction perpendicular to the longitudinal direction of the side mudguard 11 and the surface direction of the mounting plate 15. And the groove bottom 161 appear to overlap. The groove bottom 162 of the integral hinge 16 corresponds to the screw-through holes 153 and 154 when it is viewed in the direction orthogonal to the longitudinal direction of the side mudguard 11 and the surface direction of the mounting plate 15. And the groove bottom 162 appear to overlap each other.

The groove bottom 162 of the integral hinge 16 also corresponds to the vicinity of both end portions in the length direction of the side mudguard 11.
As shown in FIG. 3B, in the state where the side mudguard 11 is assembled to the rocker portion 101, the upper edge 121 of the main body 12 is bonded to the side surface of the rocker portion 101 via the double-sided tape 17 and the synthetic resin. A clip 18 made of metal passes through the locking holes 151 and 152 and is fitted into an assembly hole 104 (shown in FIG. 3A) below the rocker portion 101. When the side mud guard 11 is assembled to the rocker portion 101, the screw 19 passes through the screw through holes 153 and 154 and is screwed to a screw grommet 105 (shown in FIG. 4D) below the rocker portion 101. ing. The end plates 13 and 14 are opposed to the terminals 102 and 103 of the locker unit 101.

  As shown in FIG. 3B, in the state where the side mudguard 11 is assembled to the rocker portion 101, the side mudguard 11 is arranged so that the mounting plate 15 is appropriately disposed along the outer shape of the lower portion of the rocker portion 101. Is bent at the integral hinge 16. The side mud guard 11 shown in FIG. 3B when assembled is a shape that can be properly aligned with the outer surface shape of the rocker portion 101, but cannot be molded. 3A, the side mud guard 11 can be punched out, but the side mud guard 11 cannot be properly aligned with the outer surface shape of the rocker portion 101 in this molding shape. The integral hinge 16 provided along the length direction of the side mudguard 11 allows the side mudguard 11 having a shape at the time of molding to be removed, and allows the side mudguard 11 to be properly aligned with the outer surface shape of the rocker portion 101. Is to do.

In the first embodiment, the following effects can be obtained.
(1-1) It is easy to bend at a portion where the bottom thickness of the groove bottom of the integral hinge 16 (groove bottom 163) is easy, and at a portion where the bottom thickness of the groove bottom of the integral hinge 16 is large (groove bottom 161, 162). Strength increases. The ease of folding at the portion where the bottom thickness of the groove bottom of the integral hinge 16 is small makes the side mud guard 11 easy to be folded at the integral hinge 16 as a whole. In addition, the portion (groove bottom 161, 162) where the bottom thickness of the groove bottom of the integral hinge 16 is large makes it easy to ensure a trace when bent. That is, the side mudguard 11 provided with the integral hinge 16 having a difference in the bottom thickness of the groove bottom can be easily bent into a desired shape (shape when assembled) as a whole. As a result, the side mudguard 11 can be assembled to the rocker portion 101 by bending it into a desired shape (the shape at the time of assembly), and the side mudguard 11 is assembled to the rocker portion 101 in a shape that properly conforms to the outer surface shape of the rocker portion 101. Can do.

  (1-2) Part of the external force (load) applied to the side mudguard 11 assembled to the rocker unit 101 from the side of the vehicle body is spread to the rocker unit 101 via the upper edge 121 of the main body 12 and the double-sided tape 17. However, a part of the clip 18 spreads to the clip 18 via the periphery of the locking holes 151 and 152. Then, the remainder is transmitted to the screw 19 via the peripheral portions of the screw through holes 153 and 154 fastened by the head of the screw 19. The propagation path of the external force (load) that spreads to the clip 18 via the peripheral edges of the locking holes 151 and 152 is concentrated on the integral hinge 16 corresponding to the vicinity of the locking holes 151 and 152. Further, the propagation path of the external force (load) that spreads to the screw 19 through the peripheral edge portions of the screw-through holes 153 and 154 is also concentrated on the integral hinge 16 corresponding to the vicinity of the locking holes 151 and 152. To do. If the strength of the portion of the integral hinge 16 where the external force (load) is concentrated is weak, breakage tends to occur at this portion.

  Since the bottom thickness T1 of the groove bottom 161 of the integral hinge 16 corresponding to the vicinity of the locking holes 151, 152 and the screw-through holes 153, 154 is increased, the integral hinge due to the spread of the external force (load). Breakage at 16 is prevented. That is, the strength of the side mudguard 11 assembled to the rocker portion 101 is ensured to a necessary strength by the presence of the groove bottoms 161 and 162 having a large bottom thickness.

  (1-3) If the bottom thickness of the groove bottom at the end portion of the integral hinge 16 is made small in the same manner as the groove bottom 163 to make it easier to bend, than the other groove bottom portion having the same bottom thickness. Easy to break. The bottom thickness T2 of the groove bottom 162 at the end of the integral hinge 16 is the same as the bottom thickness T1 of the groove bottom 161 corresponding to the vicinity of the locking holes 151 and 152. Can be prevented from breaking.

  (1-4) The ease of folding and strength of a conventional integral hinge having a constant bottom of the groove bottom can be adjusted by changing the bottom thickness of the groove bottom (constant thickness over the entire length of the integral hinge). However, the thickness of the part other than the integral hinge is on the order of several millimeters for the side mudguard, and even if the bottom thickness of the groove bottom of the integral hinge in such a side mudguard is changed slightly, the integral hinge The bending easiness and strength will greatly change. That is, it is very difficult to change both the bottom thickness of the groove bottom of the integral hinge and to set both easiness of bending and strength appropriately.

  In the present embodiment in which a difference is provided in the bottom thickness of the integral hinge 16 so that the bottom thickness T3 is easy to bend and the bottom thicknesses T1 and T2 are suitable for securing the strength, By changing the length and the length of the groove bottom 162, it is possible to finely adjust the ease of folding and the strength of the integral hinge. As a result, the configuration in which a difference is provided in the bottom thickness of the groove bottom of the integral hinge makes it easy to set both ease of bending and strength appropriately.

  In the present invention, the embodiments of FIGS. 5 to 9 are also possible. In each of the embodiments of FIGS. 5 to 8, only the location of the groove bottom (corresponding to the groove bottom 161 of the first embodiment) corresponding to the vicinity of the locking holes 151 and 152 will be described. The same applies to the groove bottoms of the 16 terminal portions.

In the second embodiment of FIG. 5, the groove bottom 20 includes portions 201 and 202 where the bottom thickness gradually increases and a portion 203 where the maximum bottom thickness is constant.
In the third embodiment of FIG. 6, the groove bottom 21 is composed of portions 211 and 212 whose bottom thickness gradually increases.

  In the fourth embodiment of FIG. 7, the pair of groove bottoms 22 and 23 having a constant bottom thickness correspond to the vicinity of the positions of the locking holes 151 and 152. The fact that the groove bottoms 22 and 23 correspond to the vicinity of the positions of the locking holes 151 and 152 means that the groove bottoms 22 and 22 correspond to the direction perpendicular to the longitudinal direction of the side mudguard 11 and the surface direction of the mounting plate 15. , 23 can be seen at positions close to the locking holes 151, 152. In the illustrated example, the pair of groove bottoms 22 and 23 having a constant bottom thickness sandwich the locking holes 151 and 152 when viewed in the direction orthogonal to the longitudinal direction of the side mudguard 11 and in the surface direction of the mounting plate 15. It is provided as follows.

  In the fifth embodiment of FIG. 8, an integral hinge 24 having a constant groove depth is provided on the back surface side of the mounting plate 15, and the thickness of the groove bottom 241 is increased on the front surface of the mounting plate 15. A thickened portion 242 is provided.

In the sixth embodiment of FIG. 9, the integral hinge 16 is formed in which the groove bottom 166 having a large bottom thickness and the groove bottom 167 having a small bottom thickness are alternately arranged.
In the present invention, the following embodiments are also possible.

(1) In the first embodiment, a difference may be provided between the bottom thickness T1 of the groove bottom 161 and the bottom thickness T2 of the groove bottom 162.
(2) The length of the integral hinge may be shorter than the entire length of the side mud guard 11 in the longitudinal direction so that the integral hinge does not reach the terminals before and after the side mud guard 11.

(3) An integral hinge may be provided on the front side surface of the side mudguard 11.
(4) The depth of the groove bottom of the integral hinge may be constant, and a recess may be provided from the back side of the integral hinge to provide a difference in the bottom thickness of the groove bottom of the integral hinge.

  (5) Integral hinges are provided back-to-back on both the front and back surfaces of the side mudguard 11 so that the groove depths of the integral hinges on the front and back sides of the side mudguard 11 are different. A difference may be provided in the bottom thickness of the groove bottom.

  (6) In the first embodiment, the groove width at the groove bottom 161 may be different from the groove width at the groove bottom 163, or the groove width at the groove bottom 162 may be different from the groove width at the groove bottom 163. Good.

(7) The integral hinge may have a V-shaped groove shape with a narrow groove bottom.
(8) In the first embodiment, a slit-like through hole may be provided in a part of the groove bottom 163.

(9) In the first embodiment, a slit-like through hole may be provided in a part of the groove bottom 162.
(10) In the first embodiment, a slit-like through hole may be provided in a part of the groove bottom 161.

(11) Screwing with the screw 19 in the first embodiment may be omitted.
(12) The present invention may be applied to automobile exterior parts such as bumpers and spoilers.
The technical idea that can be grasped from the embodiment described above will be described below.

[1] The hinge structure for an exterior part in an automobile according to any one of claims 1 to 3, wherein the depth of the groove bottom of the integral hinge is varied to provide a difference in the bottom thickness of the groove bottom. .
[2] The exterior component includes a main body and a mounting plate connected to an edge portion extending in the longitudinal direction via an integral hinge. A hinge structure for an exterior part in an automobile according to claim 1.

  [3] The exterior component is a side mudguard provided at a lower side edge of a vehicle body. The exterior component of the automobile according to any one of [1] to [3], [1], [2]. Hinge structure.

The side view which shows 1st Embodiment. The perspective view of a side mud guard. (A) is sectional drawing which shows the side mud guard of the shape at the time of shaping | molding. (B) is sectional drawing which shows the side mud guard of the shape at the time of an assembly | attachment. (A) is a back view which shows the back side of a side mud guard. (B) is the sectional view on the AA line of (a). (C) is the BB sectional view taken on the line of (a). (D) is CC sectional view taken on the line of (a). (E) is the DD sectional view taken on the line of (a). Sectional drawing which shows 2nd Embodiment. Sectional drawing which shows 3rd Embodiment. Sectional drawing which shows 4th Embodiment. Sectional drawing which shows 5th Embodiment. Sectional drawing which shows 6th Embodiment.

Explanation of symbols

  10 ... Automobile. 101: A locker part to be assembled. 11 ... Side mudguard as exterior parts. 151, 152... Locking holes as locking portions. 153, 154 ... Screw through holes as locking portions. 16, 24 ... Integral hinge. 161: The groove bottom of the integral hinge portion corresponding to the vicinity of the position of the locking portion. 162, 163, 20-23 ... groove bottom. 164, 165 ... Terminal portion of the integral hinge. T1, T2, T3 ... bottom thickness.

Claims (3)

In exterior parts made of synthetic resin in automobiles,
A hinge structure for an exterior part in an automobile in which a groove-shaped integral hinge for bending and deforming from a shape at the time of molding to a shape at the time of assembly is provided, and a difference in the bottom thickness of the groove bottom of the integral hinge is provided.   The bottom thickness of the part of the integral hinge corresponding to the vicinity of the position of the latching part of the exterior part that is latched with respect to the assembly target in the shape when assembled is at least part of the other part of the integral hinge. The hinge structure of the exterior part in the motor vehicle according to claim 1, wherein the hinge structure is larger.   The hinge structure for an exterior part in an automobile according to any one of claims 1 and 2, wherein a bottom thickness of a terminal portion of the integral hinge is larger than at least a part of another part of the integral hinge.

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