JP2015025296A - Door hinge for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce cost in a door hinge for a vehicle.SOLUTION: The door hinge comprises a movable hinge member 2 fixed to an installation object surface D1 of a door D and a fixed hinge member 3 being a steel plate press mold fixed to an installation object surface B1 of a vehicle body. The fixed hinge member 3 comprises a vehicle body fixing part 31 fixed to the installation object surface B1 of the vehicle body, a pair of bending pieces 32 of a substantially L shape in an axial directional view of a hinge shaft 4 rotatably connected to the movable hinge member 2 by the hinge shaft 4 and a linkage part 33 slantingly formed at a predetermined angle to the vehicle body fixing part 31 and drawing in the axial direction so as to connect an L-shaped projected corner part 32b and its mutual vicinities in the respective bending pieces 32. The opposed side 32c opposed to an installation object surface d1 of the door D in the respective bending pieces 32, is set at a right angle or a substantially right angle to the installation object surface B1 of the vehicle body, and an expansion drawing of the fixed hinge member 3 is formed as a substantially T shape.

Description

  The present invention relates to a vehicle door hinge for pivotally attaching a vehicle door to a vehicle body so as to be opened and closed.

  Conventionally, in a vehicle door hinge, as shown in FIG. 11, a fixed hinge member 101 of a steel plate press-molded product fixed to a mounting surface B1 of a pillar B forming a part of a vehicle body, and a front end surface of a door D And a movable hinge member 104 of a steel plate press-molded product that is fixed by a bolt 102 and is rotatably connected to the fixed hinge member 101 by a hinge shaft 103 that faces in the vertical direction.

  The fixed hinge member 101 is bent at a right angle from the upper and lower ends of the vehicle body fixing portion 101a to the vehicle outer side (upper side in FIG. 11), and fixed to the mounting surface B1 of the pillar B by the bolt 105. In addition, the upper and lower bent pieces 101b into which the hinge shaft 103 is inserted at the front end portion (the vehicle outer end portion) and the rear end portion (also the left portion) of the vehicle body fixing portion 101a are obtusely bent toward the vehicle outer side, and The connecting portion 101c that connects the rear ends of the supporting portion 101b is integrally formed (see, for example, Patent Document 1).

Japanese Utility Model Publication No.59-30146

  However, in the conventional vehicle door hinge, when the hinge shaft 103 is viewed in the axial direction, the opposite side 101d of the bent piece 101b of the fixed hinge member 101 (the side of the end face diagonally facing the front end face of the door D) is the mounting surface. The connecting portion 101c is inclined with respect to B1 and protrudes rearward from the opposite side 101d. For this reason, as shown in FIG. 12, the development view of the fixed hinge member 101 is that the pivotal support portion (arm-like portion into which the hinge shaft 103 is inserted) 101 f of each bent piece 101 b in the fixed hinge member 101 is a hoop material. The portion that extends obliquely in the longitudinal direction (vertical direction in FIG. 12) and that forms the connecting portion 101c protrudes in the width direction of the hoop material. As a result, the development before the fixed hinge member 101 is press-molded has a large dimension in the lateral direction of the hoop material, resulting in poor yield and an impediment to cost reduction.

  In view of the above problems, an object of the present invention is to provide a vehicle door hinge that enables cost reduction.

  In order to solve the above-mentioned problems, the present invention comprises a movable hinge member fixed to a mounting surface of a door and a fixed hinge member which is a steel plate press-formed product fixed to a mounting surface of a vehicle body. The members are respectively formed on the vehicle body fixing portion that contacts the mounting surface of the vehicle body and is fixed by bolts, and at both ends of the vehicle body fixing portion that are spaced apart from each other in the axial direction of the hinge shaft. A pair of bent pieces that are substantially L-shaped when viewed in the axial direction of the hinge shaft, and are bent with respect to the vehicle body fixing portion. Each of the bent pieces has an L-shaped projecting corner portion and a connecting portion extending in the axial direction so as to connect the vicinity thereof. Door mounting And substantially T-shaped as a right angle or nearly right angle, a developed view of the fixed hinge member opposing sides facing against the mounting surface of the vehicle body.

  Furthermore, it is preferable that the end surface of the connecting portion does not protrude from the facing side of the bent piece toward the mounting surface side of the door as viewed in the axial direction.

  According to the present invention, the development view of the fixed hinge member is substantially T-shaped, thereby improving the yield of steel plate press forming and enabling cost reduction.

It is a perspective view of the door hinge concerning this invention. It is a front view of a door hinge similarly. FIG. 3 is a view taken in the direction of arrow III in FIG. 2. It is IV arrow line view in FIG. FIG. 3 is a view taken in the direction of arrow V in FIG. 2. It is VI arrow directional view in FIG. It is the VII-VII line cross-sectional view in FIG. It is a cross-sectional view of the same site | part as FIG. 7 when a door exists in a full open position. It is a cross-sectional view of the same part as FIG. 7 showing a deformed state of the door hinge. It is an expanded view of the fixed hinge member before press molding. It is a top view of the door hinge for demonstrating a prior art. It is an expanded view of the fixed hinge member in a prior art.

  DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, the best embodiment of the invention will be described based on the drawings. In the following description, the left side in FIGS. 3 and 7 to 9 is “rear”, the right side is “front”, the upper side is “vehicle outside”, and the lower side is “indoor side”.

  The door hinge 1 is fixed to the movable hinge member 2 by a movable hinge member 2 fixed to the front end surface of the door D and a pillar B which forms a part of the vehicle body and has a hooked columnar hinge shaft 4 which faces the vertical direction. A fixed hinge member 3 that is rotatably connected is provided, and the door D is pivotally attached to the pillar B so as to be opened and closed.

  The movable hinge member 2 is a steel plate press-molded product, and a pair of upper and lower door fixing portions 21 and 21 fixed to a mounted surface D1 which is a front end surface of the door D by a bolt (not shown), and each door fixing portion 21. The pair of upper and lower pivot portions 22, 22 bent forward at right angles from the right angle to the hinge shaft 4, and the upper and lower pivot portions 22, 22 are connected to each other and the connecting portion 23 parallel to the hinge shaft 4 is integrated. Form.

  The fixed hinge member 3 is a steel plate press-molded product, and includes a vehicle body fixing portion 31 fastened and fixed by a single bolt 5 and a nut 6 to a mounting surface B1 facing the vehicle outside of the pillar B, and the vehicle body fixing portion 31. A pair of upper and lower bent pieces 32 and 32 which are in the upper and lower portions and are bent at right angles to the vehicle body fixing portion 31 and separated from each other in the axial direction of the hinge shaft 4, and the rear portion of the vehicle body fixing portion 31. The axial direction of the hinge shaft 4 is continuously formed so as to incline at a predetermined angle with respect to the vehicle exterior fixing portion 31 and connects the L-shaped protruding corner portion 32b of each bent piece 32 and the vicinity thereof. The connecting portion 33 extending in the direction is integrally formed.

  Each bent piece 32 is substantially L-shaped (see FIGS. 3, 7, and 8) when viewed from the axial direction of the hinge shaft 4, and is located at the rear of each bent piece 32 and larger than the other parts. The extending portion forms a pivot portion 32a, and the tip portion of the pivot portion 32a is connected to each pivot portion 22 of the movable hinge member 2 by the hinge shaft 4 so as to be relatively rotatable.

  Further, when the hinge shaft 4 is viewed in the axial direction, the opposing side 32c corresponding to the rear end surface (the surface facing the mounted surface D1 of the door D in the closed position) in each bent piece 32 is a biller B It is formed so as to be perpendicular or almost perpendicular (approximately 87 degrees in the embodiment) to the mounting surface B1.

  In order to increase the rigidity in the thickness direction of each bent piece 32 on the outer surface of each bent piece 32 (the upper surface in the upper bent piece 32 and the lower surface in the lower bent piece 32), A protrusion 32d extending straight from the portion including the boundary between the piece 32 and the vehicle body fixing portion 31 to the outside of the vehicle is formed, and also the inner surface (the lower bent piece 32 and the lower bent piece 32 in the upper bent piece 32). 8, the stopper 32e for stopping the door D at the fully open position by contacting the end surface 22a of each pivotal support portion 22 of the movable hinge member 3 in the fully open position of the door D as shown in FIG. Is extruded.

  The connecting portion 33 is continuously formed at the rear portion of the vehicle body fixing portion 31 and connects the L-shaped projecting corner portion 32b of each bent piece 32 and the vicinity thereof, thereby the thickness direction (vertical direction) of each bent piece 32. ) Has the effect of increasing the bending strength.

  In each bent piece 32, the inclined surface 32 b, that is, the surface of the connecting portion 33 and facing the mounting surface B 1 of the pillar B with a predetermined angle (approximately 40 degrees in this embodiment), Deformation that allows contact with the mounted surface B1 when each bent piece 32 is deformed so as to widen the angle of the L-shaped corner 32f with respect to the mounted surface B1 of the pillar B. The promotion part 34 is formed.

  As shown in FIG. 7, the deformation promoting portion 34 has a boundary a between the vehicle body fixing portion 31 and the vehicle body contact surface (a surface that contacts the mounted surface B1) 31 a within the hinge shaft diameter region L, and the boundary a From the mounting surface B1 of the pillar B, and the rear end 34a is rearward of the hinge shaft diameter region L, and the opposite side 32c of the bent portion 32 of the fixed hinge member 3 is opposed to the side 32c. So as not to protrude rearward from the opposite side 32c.

  As shown in FIG. 7, the hinge shaft diameter region L includes two tangents perpendicular to the mounting surface B <b> 1 among the tangents that contact the circumference of the hinge shaft 4 in the axial direction of the hinge shaft 4. Are extended toward the mounting surface B1 and defined as a region between the extended both tangent lines b and c.

  The deformation promoting portion 34 is normally in a non-contact state with respect to the mounted surface B1, and contacts the mounted surface B1 when the fixed hinge member 3 is deformed along with the deformation of the door D as shown in FIG. .

  If it demonstrates in detail regarding a deformation | transformation of the fixed hinge member 3, the deformation | transformation acceleration | stimulation part 34 will always be in a non-contact state with respect to the to-be-attached surface B1, as shown in FIG. In this state, if the movable hinge member 2 is pulled obliquely rearward (in the direction of the white arrow shown in FIG. 3) due to a side collision with the door D or the like, the deformation is accelerated before the deformation. Since the portion 34 is not in contact with the mounting surface B1 of the pillar B, each bent piece 32 has an L-shaped corner portion 32f with the boundary a between the deformation promoting portion 34 and the vehicle body contact surface 31a as a fulcrum. Deform to widen the angle. In this case, since the boundary a is located in the hinge shaft diameter region L at the time of deformation, it is not easily deformed as in the prior art. Then, as shown in FIG. 9, when each bent piece 32 is deformed to some extent and the deformation promoting portion 34 comes into contact with the mounted surface B <b> 1, the bent piece 32 is stretched to prevent further deformation of each bent piece 32. . As a result, the vehicle body fixing portion 31 of the fixed hinge member 3 is deformed so as to be bent from the mounting surface B1, or stress is concentrated on the corner portions 32f of the bent pieces 32, and the corner portions 32f break at once. By suppressing such deformation, the strength of the door hinge 1 can be increased and the door D can be firmly supported.

Next, a development view of the fixed hinge member 3 before steel plate press forming will be described.
As described above, when the hinge shaft 4 is viewed in the axial direction, the opposing sides 32c of the bent pieces 32 of the fixed hinge member 3 are substantially perpendicular to the mounting surface B1 of the pillar B, the connecting portion As shown in FIG. 10, the developed view of the fixed hinge member 3 is obtained by aligning the rear end 34a of 33 with the opposing side 32c without projecting backward from the opposing side 32c of each bent piece 32. The pivotal support portion 32a of the bent piece 32 extends substantially straight in the longitudinal direction of the hoop material (vertical direction in FIG. 10), and the vehicle body fixing portion 31 is perpendicular to the substantially central portion of each pivotal support portion 32a (in the width direction of the hoop material). A substantially T-shape extending in the left-right direction in FIG.

  Thereby, since the fixed hinge member 3 of a present Example can make a developed view into a substantially T shape, since a yield improves compared with a prior art, it becomes possible to aim at cost reduction.

  Although the embodiment of the present invention has been described above, the following various modifications and changes can be made to the present embodiment without departing from the gist of the present invention.

(I) The door D to which the present invention is applied is a vehicle back door or a slide door.
(Ii) Two or more bolts 5 for fixing the fixed hinge member 3 are used.
(Iii) As shown in FIG. 7, a line obtained by extending the opposite side 32c of the bent piece 32 facing the mounting surface D1 of the door D toward the mounting surface B1 of the pillar (vehicle body) B is defined as an extension line d. When the region between the tangent c far from the extension line d and the extension line d of the two tangents b and c is defined as the limited region L1, the deformation promoting portion 34 is connected to the pillar (vehicle body ) Set so that the boundary a with the vehicle body contact surface 31a that contacts the mounted surface B1 of B is located in the limited region L1. Even if it does in this way, there exists an effect substantially the same as the above-mentioned Example.

DESCRIPTION OF SYMBOLS 1 Door hinge 2 Movable hinge member 3 Fixed hinge member 4 Hinge shaft 5 Bolt 6 Nut 21 Door fixing part 22 Pivoting part 22a End surface 23 Connection part 31 Car body fixing part 31a Car body contact surface 32 Bending piece 32a Pivoting part 32b Outward corner part 32c Opposite Side 32d Projection 32e Stopper 32f Entering corner 33 Connecting part 34 Deformation promoting part 34a Rear end a Boundary b, c between deformation promoting part and vehicle body contact surface Tangent line d Extension line B Pillar (vehicle body)
B1 Mounted surface D Door D1 Mounted surface L Hinge shaft diameter region L1 Limited region

Claims (2)

A movable hinge member fixed to the attached surface of the door, and a fixed hinge member that is a steel plate press-formed product fixed to the attached surface of the vehicle body,
The fixed hinge member is formed at each of a vehicle body fixing portion that contacts a mounting surface of the vehicle body and is fixed by a bolt, and both ends of the vehicle body fixing portion that are spaced apart from each other in the axial direction of the hinge shaft. A pair of substantially L-shaped bent pieces as viewed in the axial direction of the hinge shaft, which is bent at a substantially right angle with respect to the surface and is rotatably connected to the movable hinge member by the hinge shaft; It is formed so as to be inclined at a predetermined angle with respect to each other, and has an L-shaped projecting corner in each bent piece and a connecting portion extending in the axial direction so as to connect the vicinity thereof,
The opposite side of each bent piece that faces the mounting surface of the door is perpendicular or substantially perpendicular to the mounting surface of the vehicle body, and the development view of the fixed hinge member is substantially T-shaped. Vehicle door hinge.   2. The vehicle door hinge according to claim 1, wherein an end surface of the connecting portion does not protrude from the opposite side of the bent piece toward the mounting surface side of the door as viewed in the axial direction.

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