JPH049413Y2 - - Google Patents

Description

[Detailed explanation of the idea] [Industrial application field]

This invention relates to an improvement of an automobile side door hinge using a four-bar rotation link.

[Conventional technology]

Conventionally, side doors in automobiles, such as passenger cars, have been installed so that they rotate and open/close around a single hinge fixed to the body in most cases. In order to do this, the door opening angle must match the total length of the side door. At this time, if the space on the side of the car is narrow, the door cannot be opened sufficiently, making it difficult for passengers to get in and out of the vehicle. There are many. On the other hand, as disclosed in, for example, Japanese Utility Model Application Publication No. 57-46014 or No. 55-101263, two points separated from each other on the body side of the automobile and two points separated from each other on the side door side of the automobile are disclosed. Among the points, a rotation link that connects one point of each of the body and the side door as the rotation center, a rotation link that connects the other one point as the rotation center, and a portion between the two rotation centers on the body side. An automobile side door hinge has been proposed in which a four-bar rotation link is formed by a portion between two rotation centers of the side door. Side door hinges that use this kind of four-section rotating link secure space for the occupants' feet, while
The required space on the side of the vehicle can be reduced, and therefore, even if the space on the side of the vehicle is narrow, passengers can get in and out by opening and closing the side door. In a side door hinge using a four-bar rotation link as described above, the rotation center axis on the side door side is separated from the rotation center axis on the body side by the length of the rotation link, so the side door hinge is separated from the rotation center axis on the body side by the length of the rotation link. The moment based on the load increases, and this moment also applies a large load to the mounting portion of the rotating shaft on the side door side. Therefore, in order to increase the support rigidity of the side door, it is necessary to arrange multiple door hinges in the vertical direction.
must be installed. However, when multiple side door hinges are installed vertically in this way, their rotational axes must be aligned vertically,
There is a problem that the installation work and adjustment are complicated. Furthermore, the mounting surfaces of the rotation center shaft on the body side and the side door side, especially the mounting surface on the side door side, must have considerably high rigidity, and in order to satisfy this requirement, the weight of the side door Another problem arises in that the weight of the door hinge must be increased. That is, if the rigidity of the side door is small, combined with the long length of the door hinge, that is, the rotating link,
For example, when the side door is opened, the vertical stiffness, torsional stiffness, and over-opening stiffness of the side door are reduced.
There is a problem in that the side door is displaced downward, twisted, or deformed when fully opened. Furthermore, even when the door is closed, if the rigidity is small,
There is a problem in that it is difficult to attach it to the body. On the other hand, in an application dated the same date, the present applicant proposed a door-side upper rotation center shaft supported at a position spaced apart in a substantially horizontal direction at the upper part of the swinging proximal end of the side door; a body side upper rotation center axis supported at a position spaced apart in a substantially horizontal direction on the upper part of the body side surface adjacent to the door side and the body side lower rotation center axis aligned below the upper rotation center axis; Both ends of the upper rotation center shaft are rotatably connected to inner rotation center shafts in the width direction of the vehicle body on each of the body side and the door side of the upper rotation center shaft, and
The vertically integrated main arm has both lower ends rotatably supported on the inner lower rotation center axis in the vehicle body width direction corresponding to the upper rotation center axis, and both ends are rotatably supported by the remaining upper rotation center axis. and a lower control arm whose both ends are rotatably supported by the remaining lower rotation center axis, and constitute a pair of similar four-section rotation links above and below. Between the vertical direction of the four-bar rotation link, passing near the rotation center axis of the main arm on the body side, from the end portion where the door side base is attached to the body side where the body side base is attached. We are proposing an automobile side door hinge that is equipped with a wire harness that runs all the way to the surface of the door. Incidentally, a wire harness for a power supply or a control system for, for example, a power window regulator of the side door is usually wired between the body and the side door. For a side door attached via the side door hinge as described above, the wire harness is routed between the upper and lower four-bar rotation links in the vertical direction. In this case, unlike when a normal hinge is used, the side door is moved significantly in the longitudinal direction and the width direction of the vehicle body when opening and closing, and the wire harness must be lengthened accordingly between the side door and the body. . Further, in order to increase the rigidity of the side door hinge, when the main arm is integrally formed in the vertical direction, a space is provided in the middle part in the vertical direction so that the main arm does not interfere with the wire harness, and this space is It is necessary to pass the wire harness through. In this way, even if a space is formed in the main arm for the wire harness to pass through, the wire harness is long between the side door and the body as described above, so when the side door is opened or closed, the main arm There are problems in that the paint on the main arm comes into contact with the main arm and the wire harness comes into contact with the main arm, and the wire harness itself wears out.

[Problem that the invention attempts to solve]

This idea forms an arm on the inside in the vehicle width direction from a pair of upper and lower four-section rotary links in the vertical direction, and forms a space for passing a wire harness through the arm, and also connects it to the body side. Even when a wire harness is wired between the side door and the main arm, this prevents the wire harness from coming into direct contact with the main arm, thereby preventing peeling of the paint on the main arm and wear of the wire harness due to such contact. An object of the present invention is to provide a side door hinge for an automobile that can prevent such damage.

[Means to solve the problem]

This invention consists of a door-side upper rotation center shaft that is supported at a position spaced apart in a substantially horizontal direction at the top of the swinging proximal end of the side door, and a substantially horizontal axis at the top of the body-side surface adjacent to said end. a body-side upper rotation center shaft supported at a position spaced apart from each other; door-side and body-side lower rotation center shafts aligned below the upper rotation center shaft; Both upper ends are rotatably connected to rotation center shafts on the inside in the vehicle width direction on each door side, and both lower ends are rotatably supported on lower rotation center shafts on the inside in the vehicle width direction corresponding to these upper rotation center shafts. a main arm that is integral in the vertical direction; a second upper arm that is rotatably supported at both ends by the remaining upper rotation center shaft; and a lower arm that is rotatably supported at both ends by the remaining lower rotation center shaft. , which constitutes a pair of upper and lower similar four-bar rotation links, and which is located between the upper and lower four-bar rotation links in the vertical direction and near the rotation center axis of the main arm on the body side. In the automobile side door hinge, the main arm is provided with a wire harness that is routed from the end portion to which the door side base is attached to the body side surface to which the body side base is attached; a pipe portion whose upper and lower ends are supported by upper and lower rotation center shafts on the body side;
The above object is achieved by forming a space for the wire harness to pass through adjacent to the vertical middle part of the pipe part and attaching a resin harness protector to the pipe part facing the space. It is something. In addition, in this invention, the main arm is integrally provided with the pipe portion so as to protrude laterally from the upper and lower portions of the pipe portion, and the tip of each
An upper arm and a lower arm each having a tapered tip and a substantially triangular shape are rotatably supported by an upper rotational center axis and a lower rotational center axis on the door side, and the space is formed by the pipe in the upper arm and the lower arm. The above object is achieved by forming the connection between the proximal end and the base end. Further, in this invention, the harness protector is a cylindrical body that can be elastically expanded by a slit extending vertically in the axial direction, and the pipe portion is formed with a protrusion that fits into the slit. The above object is achieved by configuring a rotation stopper for the harness protector.

[Effect]

In this invention, the wire harness comes into contact with the main arm through the resin harness protector, thereby preventing peeling and abrasion of the paint on the main arm and abrasion of the wire harness.

【Example】

Embodiments of the present invention will be described below with reference to the drawings. In this embodiment, as shown in FIGS. 1 to 4, the end panel 14 is formed long in the vertical direction along the end panel 14 that is the end of the swinging base end of the side door 12 of an automobile (not shown entirely). and a door side base 16 attached to the end panel 14;
A body side base 20 that is formed vertically long along a surface 18A of the front pillar 18 on the body side adjacent to the end panel 14 and is attached to the surface 18A, and the door side base 1
6 and four upper rotation center shafts 2 supported at two locations each at the upper and lower portions of the body side base 20.
2A, 24A, 26A, 28A and four lower rotation center shafts 22B, 24B, 2 aligned below the upper rotation center shafts 22A, 24A, 26A, 28A.
6B, 28B, and the upper rotation center shaft 22A, 2
4A, 26A, and 28A, an upper control arm 30A whose both ends are rotatably connected to upper rotation center shafts 22A and 26A on the outside in the vehicle width direction of the door side base 16 and body side base 20, respectively; control arm 30
A lower control arm 3 whose both ends are rotatably connected to the lower rotational center shafts 22B, 26B which are aligned with the upper rotational center shafts 22A, 26A at both ends of A.
0B, and a vertically integrated main arm 32 whose upper and lower ends and width direction ends are rotatably connected to the other upper rotational center shafts 24A, 28A and lower rotational center shafts 24B, 28B, and a side door hinge 10 of an automobile. It is composed of Here, as shown in FIGS. 2 and 3,
Inner panel 12 in the side door 12
A and the outer panel 12B extend further forward than the end panel 14 and along the outer surface to form an extension portion 12C. This extension 1
2C has front side fender 11 when the door is opened.
The front end is extended forward within a range that does not interfere with the front pillar 18, and the position of the front end in the longitudinal direction of the vehicle body is outside the upper rotation center axis 26A at the frontmost position, near the front end of the front pillar 18, and outside of the front pillar 18. between the side door hinge 1 and the surface 18A of the side door hinge 1.
It forms a space 34 in which 0 is stored. Further, the extension portion 12C is a thick width portion 12D that bulges inward in the door thickness direction at a position between the upper control arm 30A and the lower control arm 30B in the vertical direction on the outside in the vehicle width direction.
It is said that Portions of the extension portion 12C located outside the upper and lower control arms 30A and 30B are formed into thin plates so as not to interfere with these control arms. The main arm 32 includes the upper control arm 30A and the lower control arm 30.
It is located inside in the vehicle width direction than B, and when viewed from above,
When the side door 12 is in the closed state, the front pillar 18 is curved so that its outer side is convex along the posterolateral corner and along the surface 18A. That is, when the side door 12 is fully closed, the main arm 32 on the inside in the width direction of the vehicle body does not interfere with the front pillar 18, and the front pillar 18
It is designed to be stored as close as possible to the On the other hand, the upper control arm 30 is disposed on the outside in the vehicle width direction with respect to the main arm 32.
A and the lower control arm 30B are connected to the front side fender 1 when the side door 12 is fully opened.
The side door 12 is bent slightly convexly inward in the width direction of the vehicle body so as not to interfere with the rear end portion 11A of the vehicle body 1 and to allow the side door 12 in a fully open state to be slid as far forward as possible in the vehicle body. The door side base 16 is attached to the side door 12
The horizontal section along the shape of the end panel 14 is approximately crank-shaped, and the end panel 14 is provided with bolts ( (not shown) is tightened and fixed. The upper rotational center axes 22A, 24A are located in the vicinity of the upper bolt hole 16A in the door side base 16 and at a position offset downward from the bearing support portion 1 that extends horizontally.
7A is mounted and supported in a substantially vertical direction. Further, the lower rotation center shafts 22B and 24B are attached in a substantially vertical direction to a bearing support portion 17B that extends horizontally at a position offset above and near the bolt hole 16B on the lower side of the door side base 16. is supported by Further, the body side base 20 has two bolt holes 20A and 20A, respectively, at its upper and lower ends.
20B and one bolt hole 20C is formed near and below the shaft-side bolt hole 20A, and bolts (not shown) inserted into these bolt holes 20A, 20B, and 20C connect the front pillar 18 to the outer side in the vehicle body width direction. It is adapted to be tightened and fixed to the surface 18A. Here, the upper half of the body side base 20 is bent at an obtuse angle in a horizontal section, thereby increasing the cross-sectional rigidity. The upper rotational center axes 26A, 28A are located above the bolt hole 20C in the body side base 20, in the vicinity of the upper bolt hole 20A, and at a position offset below it, at a bearing support portion 21A that extends horizontally. The upper rotation center shafts 26A, 28A are supported in a substantially vertical direction. Further, in the vicinity of the lower bolt hole 20B in the body side base 20, and at a position offset above this, a bearing support part 21B is formed that extends in the horizontal direction, and this bearing support part 21B is The lower rotation center shafts 26B and 28B are supported in a substantially vertical direction. The upper rotation center shafts 22A, 24A, 26A,
28A, lower rotation center shafts 22B, 24
B, 26B, and 28B are aligned on an inclined axis slightly inclined from the vertical axis so as to intersect at a virtual point 10A below the side door hinge 10. Reference numeral 36 in the figure indicates a lightening hole formed in each of the door side base 16 and the body side base 20 for weight reduction. The main arm 32 has a small diameter, and the upper and lower control arms 30A and 30B mainly bear the over-opening load and torsional load of the side door 12, and at the same time handle the weight moment of the side door 12 and the side door due to overload. 12 from twisting, and further controls the rocking locus of the side door 12, it is designed to mainly support the weight of the side door 12. Further, as shown in FIG. 4, the main arm 32 is approximately K-shaped, and the vertical side of the K-shape is
The upper end fitting hole 33A is a large diameter pipe portion 33 that is fitted to the upper rotation center shaft 28A on the body side, and the lower end fitting hole 33B is fitted to the lower rotation center shaft 28B on the body side, and The upper side of the K-shape is a substantially triangular upper arm 38A with a horizontal upper edge and an inclined lower edge, and a fitting hole 39A at the tip of the upper arm 38A.
Upper rotation center shaft 2 on the side of the door side base 16
The lower arm 38B is a substantially triangular lower arm 38B with an inclined upper edge and a horizontal lower edge. is mated to. A vertical gap is formed between the connection portions of the upper arm 38A and the lower arm 38B to the pipe portion 33. Further, the upper arm 38A is longer than the lower arm 38B in the vertical direction, that is, has a larger vertical section, and is designed to mainly bear the load of the side door 12. The symbol 32A in the figure is the upper arm 3 for weight reduction.
8A and the cutout hole formed in the lower arm 38B, and 32B are the holes formed in the upper arm 38A and the lower arm 3.
8B shows reinforcing ribs formed protruding in the thickness direction along the upper and lower edges of each plate. Upper rotation center shafts 24A, 28A and lower rotation center shaft 24 for supporting the main arm 32.
B, 28B correspond to the corresponding bearing supports 17A, 21A, 17B and 21, as shown in FIG.
Serration 4 inserted into B from above and below
4A, a collar 44B, and an insertion portion 44C. Fitting holes 33A, 33B, 3 of main arm 32
9A and 39B are press-fitted with a bushing 46 (see FIG. 6) having a collar 46A that is inserted from the outer end side, and the cantilevered pin-shaped upper rotation center shafts 24A, 28A are inserted into the bushing 46 (see FIG. 6). The insertion portions 44C at the tips of the respective rotational center shafts 24B and 28B are inserted. The insertion portions 44C of the upper rotation center shafts 24A, 28A and the lower rotation center shafts 24B, 28B, which are inserted into the bush 46, have oil grooves 44D in the circumferential direction.
is formed and lubricating oil is enclosed. Additionally, four radial oil grooves 46 are provided at equal angular intervals in the circumferential direction on the outer end surface of the flange 46A of the bush 46 in a portion adjacent to the outer periphery of the insertion portion 44C.
B is formed (see Figure 6). Further, as shown in FIG. 7, the upper rotation center shafts 22A, 26A and the lower rotation center shafts 22B, 26B for supporting the upper control arm 30A and the lower control arm 30B are provided with a collar 48A and an insertion portion 48B, respectively. and a cantilever pin with serrations 48C. Further, a bush 50 having a collar 50A is press-fitted into both ends of the upper control arm 30A and the lower control arm 30B from the side of the bearing support parts 17A, 21A, 17B and 21B. The upper rotation center shafts 22A, 26A and the lower rotation center shafts 22B, 26B are inserted into the bush 50 at their insertion portions 48B, and the serrations 48C at the tips are inserted into the bearing support portion 17.
A, 21A, 17B, and 21B, respectively, and are fixed by caulking with the tips of the serrations 48C. An oil groove 48D is formed in the circumferential direction on the outer periphery of the insertion portion 48B, and four oil grooves 50B are also formed on the outer end surface of the collar 50A of the bushing 50 at equal angular intervals in the radial direction from the inner periphery. is formed and lubricating oil is sealed. At the upper and lower ends of the pipe portion 33 of the main arm 32, stoppers 52A and 52B, which project horizontally, are formed, respectively. Corresponding to these stoppers 52A, 52B, a side door 1 is provided on the side of the body side base 20.
The protrusion 5 is formed with stopper surfaces 54A and 54B that the stoppers 52A and 52B come into contact with to restrict the fully open position of the side door 12 when the side door 12 is in the fully open position.
6A and 56B are provided. These protrusions 56A and 56B protrude at the corner between the lower surface of the bearing support section 21A and the inner surface of the body side base 20, and at the corner between the upper surface of the bearing support section 21B and the inner surface of the body side base 20, respectively. It is formed. A door wire harness 70 for an electric window regulator (not shown) or the like in the side door 12 is located at a position offset downward from a harness hole 72 formed on the front pillar 18 side. The wires are wired in a substantially S-shape while reaching a harness hole 74 formed in the end panel 14 of the side door 12 . Here, the wire harness 70 is attached to the side door 12 of the pipe section 33 in the main arm 32.
Also along the sides, upper and lower control arms 30A, 30B of the main arm 32
It is arranged to pass through the V-shaped part between the two. The wire harness 70 is fixed to a harness clamp bracket 78 protruding from the body side base 20 via a harness clamp 76 at a position near the pipe portion 33 . The harness clamp 76 is made of resin, and holds the wire harness 70 at its annular portion 76A, and its distal end portion 76B is inserted and fixed into a mounting hole 78A formed at the distal end position of the harness clamp bracket 78. There is. Furthermore, the pipe portion 3 in the main arm 32
3, the position adjacent to the wire harness 70, that is,
A resin harness protector 80 is attached to the vertical gap between the upper arm 38A and the lower arm 38B at the connection to the pipe section 33, so that the wire harness 70 comes into contact with the pipe section 33. This is to prevent the paint from peeling off on the pipe portion 33. As shown in FIG. 4, the harness protector 80 has a slit 80C extending vertically.
It is a substantially cylindrical member that can be expanded by means of a cylindrical member, and one notch 80A, 80B is formed in each of its upper and lower ends. On the other hand, on the pipe portion 33 side, projections 82A, 82B, 82C are formed at positions corresponding to the notches 80A, 80B of the harness protector 80 and at positions corresponding to the slits 80C. When elastically fitted into the projections 82A to 82C, the notches 80A, 80B and the slit 80C engage with the protrusions 82A to 82C.
The harness protector 80 is positioned. Furthermore, the pipe portion 3 in the main arm 32
3, a door check mechanism 60 is constructed between a torsion bar hook 58 which is formed to protrude horizontally at a substantially central position in the vertical direction, and the bearing support portion 21A of the body side base 20. This door check mechanism 60 is composed of a torsion bar 62, a roller 64, and a cam plate 66. As shown in FIGS. 1 and 8, the torsion bar 62 has a generally U-shaped curling-shaped portion 62 whose tip is bent at a right angle at its lower end.
A, and by sandwiching the torsion bar hook 58 of the pipe section 33 from above and below between the bottom side 63A of the U-shape and the right angle bent section 63B, axial positioning is performed. ing. Further, the torsion bar hook 58 is inserted from the left and right sides by the U-shaped two shaft portions 63C and 63D to position the torsion bar hook 58 in the rotational direction. The upper end side of the torsion bar 62 is a crank-shaped portion 62B, into which the roller 64 is fitted rotatably and slidably in the axial direction from the upper end. Reference numeral 58A in FIG. 4 indicates the torsion bar hook 5.
Recesses 68A and 68B for positioning the rotational direction of the torsion bar 62, which are formed at 8, are formed in the upper arm 38A of the main arm 32, and represent positioning protrusions that sandwich the torsion bar 32, respectively. The cam plate 66 is connected to the bearing support portion 2
It is a flat plate-shaped member attached to a portion of the upper surface of the door side base 16 facing the door side base 16, and its cam surface 66A is parallel to the central axis of the pipe portion 33. Further, the cam surface 66A has a lift from the central axis of the pipe portion 33 that is changed at an appropriate position to create a sense of moderation when the side door 12 is opened and closed. The roller 64, as shown in FIG.
The cam plate 66 is elastically pressed against the cam surface 66A of the cam plate 66 by a torsion bar 62 so as to be in constant line contact. Further, the roller 64 has upper and lower ribs 64A, and the cam plate 6
6 are sandwiched between the top and bottom, and are brought into contact with each other, thereby positioning in the vertical direction. Rolling contact portion 64B between the collar 64A of the roller 64
A circumferential grease groove 64C is formed on the inner circumferential side of the groove, and heat-resistant grease is sealed therein.
The durability of roller 64 is increased. Here, as shown in FIG. 3, the front end corner of the inner panel 12A of the side door 12 on the vehicle interior side is located on the inside of the end panel 14 in the vehicle width direction, that is, on the inside of the side door hinge 10 in the vehicle width direction. The door side base 16 is protruded forward from the rear end surface of the door side base 16 on the vehicle interior 84 side, and
A substantially L-shaped weather strip attachment portion 86 is formed in the protrusion 12D. A door weather strip 88 is attached to this weather strip attaching portion 86. On the other hand, a weather strip contacting surface 18B of the front pillar 18 corresponding to the door weather strip 88 is formed offset from the surface 18A toward the passenger compartment 84, so that when the side door 12 is fully closed, the weather strip contact surface 18B The contact surface 18B is adapted to come into contact with the surface of the weather strip 88 on the compartment 84 side. In this case, the corner of the weather strip contact surface 18B, that is, the front-rear direction position of the rear end surface 18C of the front pillar 18 is
Corresponding to the longitudinal position of 6, it is offset forward compared to the normal case. Next, the operation of the above embodiment will be explained. When the side door 12 is opened from the fully closed state, the main arm 32 swings counterclockwise in FIG. Centered around the rotation center axis 26A,
Further, the lower control arms 30B each swing counterclockwise in FIG. 3 about the lower rotation center shaft 26B. Since the main arm 32 and the upper and lower control arms 30A and 30B constitute a four-section rotating link, the instantaneous center of rotation of the side door 12 gradually changes, and the side door 12 is slid forward while opening to the side of the vehicle body. become. At this time, the rear end portion 11A of the front side fender 11 is connected to the extension portion 12 of the side door 12.
Corresponding to the front end of C, the upper control arm 30A and the lower control arm 30B are located in a forward position than the upper rotation center axis 26A at the frontmost position, so that the upper control arm 30A and the lower control arm 30B are slightly bent and are almost straight. Also, when the side door 12 is fully opened,
Rear end portion 11A of the front side fender 11
There is no interference with Further, the upper rotation center shafts 22A, 24A, 26
A, 28A and lower rotation center shaft 22A, 22B, 2
4B and 26B are aligned on the inclined axes that intersect at the lower point 10A, so that the upper end of the fully opened side door 12 tilts outward, making it easier for passengers to get in and out. When the side door 12 is in the fully open position, the stoppers 52A and 52B protruding from the pipe portion 33 of the main arm 32 close the body side base 20.
The protrusions 56A, 56B are brought into contact with the stopper surfaces 54A, 54B, thereby regulating the fully open position. The wire harness 70 is arranged in a substantially S-shape from the end panel 14 of the side door 12 through the inside of the side door hinge 10 to the surface 18A of the front pillar 18.
At a nearby position, the main arm 32 is held by the harness clamp bracket 78 on the body side base 20 side via the harness clamp 76, so when the side door 12 is opened or closed, it is swung around the harness clamp 76, and the main arm 32 is Abbreviation K
Since the wire harness 70 passes through the V-shaped portion where the upper arm 38A and the lower arm 38B intersect, the wire harness 70 passes through the V-shaped portion where the upper arm 38A and the lower arm 38B intersect. is main arm 32, door side base 1
6 or the body side base 20. Further, the wire harness 70 is arranged adjacent to the inner side of the pipe portion 33 of the main arm 32, and a harness protector 80 made of resin is elastically fitted to the projections 82A to 82C of the pipe portion 33. Since the harness protector 80 can come into contact with the wire harness 70, the paint on the pipe portion 33 may be peeled off by the wire harness 70, or the wire harness 70 may be damaged by the pipe portion 33. You can prevent this from happening. When opening and closing the side door, the door check mechanism 60
A roller 64 rotatably attached to the torsion bar 62 is brought into rolling contact with the cam surface 66A of the cam plate 66 as the side door 12 swings (see FIG. 9), and as the lift amount of the cam surface 66A changes. , the torsion force applied to the torsion bar 62 is changed, and a sense of moderation is created when the side door 12 is opened and closed. In the embodiment described above, the main arm 32 is not only integrated into the upper and lower parts, but also has a main arm 32 that is fitted with the upper rotation center shaft 28A and the lower rotation center shaft 28B.
Since the pipe portion 33 has a large diameter, the rigidity of the main arm 32 can be increased without significantly increasing the overall weight of the main arm 32. Here, the pipe portion 33 mainly bears the torsional load, and the upper arm 38A and the lower arm 38B, especially the upper arm 38A, bear the load of the side door 12. Further, the wire harness 70 is connected to the side door 1.
Since the harness hole 72 on the front pillar 18 side is offset in the vertical direction with respect to the harness hole 74 on the end panel 14 side of No. 2, the torsional force of the wire harness 70 generated when opening and closing the side door 12 is reduced by the offset. It has the advantage of being easily absorbed. Furthermore, the pipe portion 3 in the main arm 32
3 is hollow, so the rigidity of the main arm 32 can be greatly increased without significantly increasing the weight. Furthermore, the upper rotational center shaft 28A and the lower rotational center shaft 28B are separated from each other. Since the member is inserted into the fitting holes 33A and 33B at the upper and lower ends of the pipe section 33, weight reduction and ease of assembly are achieved compared to the case where the rotation center axis is integrated in the vertical direction. can be improved. In the above embodiment, the main arm 32, which is vertically integrated, has a pipe portion 33 and an upper arm 3.
8A and a lower arm 38B, the present invention is not limited to this, and the main arm 32 is formed by connecting the wire harness 7
0 wiring is secured,
Moreover, the upper rotation center shafts 24A, 28A and the lower rotation center shafts 24B, 28 are integrated in the vertical direction.
It is sufficient if it is rotatably supported by B. Therefore, for example, the main arm 32 may have a frame shape by providing a pipe portion that fits into the upper rotation center shaft 24A and the lower rotation center shaft 24B on the side door 12 side. However, when the main arm 32 is formed into a substantially K-shape as in the embodiment shown in FIG. 1, there is an advantage that interference with the wire harness 76 can be avoided and the weight can also be reduced. Further, although the upper rotational center axis and the lower rotational center axis in the above embodiment are supported by the door side base 16 and the body side base 20, the present invention is not limited to this, and these rotational center axes are supported by the door side base 16 and the body side base 20. This also applies to cases where part or all of the door is directly supported by the side door 12 or the body side.

[Effect of the idea]

Since the present invention is constructed as described above, it is a car side door hinge that uses a pair of upper and lower four-section rotating links, and even when the arm on the inside in the width direction of the vehicle body is integrated in the vertical direction, it can be used when opening and closing the side door. This has the excellent effect of preventing the wire harness from coming into direct contact with the main arm, thereby suppressing peeling and abrasion of the paint on the main arm and abrasion of the wire harness.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing an embodiment of a side door hinge mechanism for an automobile according to the present invention, and FIG. 2 is a schematic sectional view showing the positional relationship between a front pillar and a side door to which a side door hinge according to the embodiment is attached.
Fig. 3 is an enlarged sectional view of the main part of Fig. 2, Fig. 4 is an exploded perspective view showing the main arm and harness protector in the same embodiment, and Fig. 5 is the center of rotation of the main arm in the same embodiment. 6 is a perspective view showing a bush fitted with the rotation center shaft in FIG. 5; FIG. 7 is a sectional view showing the attachment state of the rotation center shaft on the control arm side in the above embodiment. FIG. 8 is a cross-sectional view showing essential parts of the door check mechanism in the same embodiment, and FIG. 9 is a plan view showing the side door hinge in the same embodiment when the side door is opened and closed. 10...Side door hinge, 11...Front side fender, 12...Side door, 14...
End panel, 16...Door side base, 18
...Front pillar, 18A...Surface, 20...
Body side base, 22A, 24A... Upper rotation center axis (door side), 26A, 28A... Upper rotation center axis (body side), 22B, 24B
...Lower rotation center shaft (door side), 26B, 2
8B...Lower rotation center axis (body side), 30
A...Upper control arm, 30B...Lower control arm, 32...Main arm, 3
3... Pipe section, 38A... Upper arm (main arm), 38B... Lower arm (main arm), 70... Wire harness, 80... Harness protector, 80C... Slit, 82C...
protrusion.

Claims (1)

[Claims for Utility Model Registration] (1) A door-side upper rotation center shaft supported at a position spaced apart in a substantially horizontal direction at the upper part of the swing base end of the side door, and a body adjacent to said end. A body-side upper rotation center axis supported at a position spaced apart in a substantially horizontal direction at the upper part of the side surface; a door-side and body-side lower rotation center axis aligned below the upper rotation center axis; and the upper rotation center axis. Both ends of the upper part are rotatably connected to rotation center shafts on the inner side in the width direction of the vehicle body on the body side and the door side, and the lower ends are connected to lower rotation center shafts on the inner side in the width direction of the vehicle body corresponding to these upper rotation center shafts. The main arm is vertically integrated with both ends rotatably supported, and the upper control arm is rotatably supported at both ends by the remaining upper rotation center shaft, and both ends are rotatable around the remaining lower rotation center shaft. and a supported lower control arm, forming a pair of upper and lower similar four-section rotation links, and between the upper and lower four-section rotation links in the vertical direction, the body of the main arm. from the end to which the door side base is attached, passing through the vicinity of the rotation center axis of the side;
In a side door hinge for an automobile, which is provided with a wire harness that is wired up to the surface of the body side to which the body side base is attached, the upper and lower ends are connected to the main arm by upper and lower rotation center shafts on the body side. A pipe portion in which the wire harness is supported is formed, and a space through which the wire harness passes is formed adjacent to a vertically intermediate portion of the pipe portion, and a resin harness protector is attached to the pipe portion facing the space. An automobile side door hinge characterized by: (2) The main arm is integrally provided with the pipe portion, protruding laterally from the upper and lower portions of the pipe portion, and each tip thereof is connected to the upper rotation center axis and the lower rotation center axis on the door side. an upper arm and a lower arm each having a substantially triangular shape with a tapered tip that are rotatably supported by the pipe, and the space is formed between the base end of the upper arm and the lower arm connected to the pipe portion. A side door hinge for an automobile according to claim 1 of the utility model registration claim, characterized in that: (3) The harness protector is a cylindrical body that can be elastically expanded by a slit extending vertically in the axial direction, and the pipe portion is formed with a protrusion that fits into the slit. The side door hinge for an automobile according to claim 1 or 2, characterized in that it constitutes a rotation stopper for the harness protector.