JPS61110618A - Side door hinge mechanism for car - Google Patents

Abstract

PURPOSE:To secure the sufficient rigidity by installing revolution center shafts at four positions in the upper and lower parts of a door side base and a body side base and axially supporting the upper and lower control arms and a main arm, onto the revolution center shafts, in the captioned mechanism in utilization of a four-node rotary link mechanism. CONSTITUTION:The captioned hinge mechanism has a door side base 16 which 10 is formed long in the vertical direction along an end panel 14 as the edge part on the swing base edge of a side door 12 and installed onto the end panel 14 and a body side base 20 which is formed long in the vertical direction along the surface 18A of a front pillar 18 on the body side and installed onto said surface 18A. At two positions in the upper and lower parts of the both side bases 16 and 20, revolution center shafts 22A, 24A, 26A, 28A, and 22B, 24B, 26B, and 28B are installed, and the both edge of the upper and lower control arms 30A and 30B are connected with the shafts 22A, 26A, 22B, and 26B. Further, the edge part in thedirection of the upper and lower width of the main arm 32 are connected to the shafts 24A, 28A, 24B, and 28B.

Description

[Detailed description of the invention] [Industrial application field]

The present invention relates to an improvement in an automobile side door hinge mechanism using a four-bar rotation link mechanism.

[Prior Art] Conventionally, side doors in automobiles, such as passenger cars, are usually installed so that they rotate and open/close around a single hinge fixed to the body. In order to open and close the door to get in and out of the car, a door opening angle that corresponds to the overall length of the side door is required. At this time, if the space on the side of the car is narrow, the door cannot be opened sufficiently. It is often difficult for passengers to get on and off the vehicle. 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 rotary link that connects one point of each of the body and the side door as the center of rotation, and a rotary link that connects the other point as the center of rotation,
An automobile side door hinge mechanism has been proposed in which a four-tube rotating link is formed by a portion between two rotation centers on the body side and a portion between two rotation centers of the side door. A side door hinge mechanism that uses such a four-tube rotating link can reduce the space required on the side of the vehicle while securing space for the occupant's feet. Therefore, even when the space on the side of the vehicle is narrow, Passengers can enter and exit the vehicle by opening and closing the door. In the side door hinge mechanism using a four-cylinder rotating 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.
The moment based on the load of the side door relative to the side door hinge increases, and due to the moment,
Installing the rotating shaft on the side door side also places a large load on that part. Therefore, in order to increase the support rigidity of the side door, it is necessary to arrange and attach a plurality of door hinges in the vertical direction. However, when a plurality of side door hinges are installed vertically in this way, the rotational axes of these hinges must be aligned in the vertical direction, which poses a problem in that the installation requires complicated work and adjustment. Furthermore, the rigidity of the surface for mounting the rotation center shaft on the body side and the side door side, especially the surface for mounting on the side door side, must be considerably large. A problem arises in that the weight of the door hinge and the weight of the door hinge must be increased. In other words, if the rigidity of the side door is small, combined with the long length of the door hinge or rotating link, for example, when the side door is opened, the vertical rigidity, torsional rigidity, and over-opening rigidity of the side door will be small, and the side door There are problems in that the valve is displaced downward, twisted, or deformed when fully opened. Furthermore, even when the door is closed, if the rigidity is low, there is a problem that it becomes difficult to attach the door to the body. [Problems to be Solved by the Invention] The present invention has been made in view of the above-mentioned conventional problems, and it does not significantly increase the weight of the side door, and the installation and adjustment work is easy. It is an object of the present invention to provide a side door hinge mechanism for an automobile having sufficient rigidity to support a side door.

[Means to solve the problem]

This invention provides a door side base that is formed long in the vertical direction along the end of the swinging base end of the side door and is attached to the end, and a door side base that extends along the body side surface adjacent to the end. a body side base formed to be elongated in the vertical direction and attached to the surface; four upper rotation center shafts supported at at least two positions each at the upper and lower parts of the door side base and the body side base; Of the four lower rotation center shafts aligned below the rotation center axis and the upper rotation center shaft, both ends are rotatably connected to one rotation center shaft of each of the body side base and the door side base. an upper control arm; a lower control arm having both ends rotatably connected to the lower rotation center axis aligned with the upper rotation center axis at both ends of the upper control arm; the other upper rotation center axis and the other lower rotation center; The above object is achieved by constructing a side door hinge mechanism for an automobile from a shaft and a vertically integrated main arm whose upper and lower ends and widthwise ends are rotatably connected.

[Effect]

In this invention, the rotating shafts of the upper and lower 4-link door hinges are supported by the door side base attached to the side door side and the body side base attached to the body side, thereby creating an integrated door hinge that is long in the vertical direction. A mechanism is formed which facilitates assembly and adjustment, and increases the rigidity of the hinge itself and its attachment to the side door and body. (Embodiment) An embodiment of the present invention will be described below with reference to the drawings.This embodiment will be explained in detail below with reference to the drawings. A door side base 16 that is formed long in the vertical direction along the end panel 14 that is the proximal end and is attached to the end panel 14, and a front pillar 18 on the body side adjacent to the end panel 14. The body side base 20 is formed to be elongated in the vertical direction along the surface 18A and is attached to the surface 18A. Upper rotation center shaft 22A, 24A, 26
A, 28A and the upper rotation center shafts 22A, 24A, 26
A, four lower rotation center shafts 22 aligned below 28A
B, 24B126B, 28B and the upper rotation center shaft 2
2A, 24A, 26A, and 28A, an upper control arm 30A whose both ends are rotatably connected to upper rotation center shafts 22A and 26A on the outer side in the vehicle width direction of the door side base 16 and the body side base 20, respectively; The lower rotation center shaft 22B is aligned with the upper rotation center shafts 22A and 26A at both ends of the upper control arm 30A.
, 26B, and the other upper rotation center shaft 24A, 28.
A side door hinge 10 for an automobile is comprised of a vertically integrated main arm 32 whose upper and lower ends and widthwise ends are rotatably connected to the lower rotation center shafts 24B and 28B. Here, as shown in FIGS. 2 and 3, the inner panel 12A and the outer panel 12B of the side door 12 extend further forward than the end panel 14 and along the outer surface, An extension portion 12C is formed. This extension part 12C extends forward within a range that does not interfere with the front side fender 11 when the door is opened, and the position of the front end in the longitudinal direction of the vehicle body is near the front end of the front pillar 18, and the outer surface of the front pillar 18. 18
In the darkness between A and A, a space 34 is formed in which the side door hinge 10 is housed. The main arm 32 is disposed on the inner side in the vehicle width direction than the upper control arm 30A and the lower control arm 30B, and extends along the rear outer corner of the front pillar 18 and the surface when the side door 12 is closed in plan view. It is curved and arranged so that the outside is convex along 18A. That is, when the side door 12 is fully closed, the main arm 32 on the inner side in the vehicle width direction does not interfere with the front pillar 18 and is housed as close to the front pillar 18 as possible. On the other hand, when the side door 12 is fully opened, the upper control arm 30A and the lower control arm 30B, which are arranged on the outside in the vehicle width direction with respect to the main arm 32,
It is slightly bent so as not to interfere with the rear end portion 11A of the front side fender 11 and to be convex inward in the vehicle width direction so that the side door 12 can be slid as far forward as possible in the vehicle body when fully open. . The door side base 16 has a substantially crank-shaped horizontal section along the shape of the end panel 14 of the side door 12, and has bolt holes 16A formed in two places at the upper end and two at the lower end. 16B, the end panel 14 is fastened to the end panel 14 with bolts (not shown). The upper rotational center axes 22A, 24A are located near the upper bolt hole 16A in the door side base 16, and the bearings projecting horizontally at a position offset downward from the upper bolt hole 16A are attached to the support portion 17A in a substantially vertical direction. Installation is supported. Further, the lower rotation center shafts 22B, 24B are located near the bolt holes 16B on the lower side of the door side base 16, and the bearings that protrude horizontally at positions offset upward from the bolt holes 16B are attached to the support portions 17B approximately vertically. supported in the direction. Further, the body side base 20 has two bolt holes 2OA and 20B at its upper end and lower end, respectively, and
One bolt hole 2 below near the upper end side bolt hole 2OA
0C is formed and these bolt holes 2OA, 20B, 2
The front pillar 18 is tightened and fixed to the outer surface 18A in the vehicle body width direction by a bolt (not shown) inserted through the 0C. Here, the upper half of the body side base 20 is bent at an obtuse angle in a horizontal section, thereby increasing cross-sectional rigidity. The upper rotation center axes 26A and 28A are located above the bolt hole 20C in the body side base 20, and in the vicinity of the upper bolt hole 2OA, and are offset below the bolt hole 2OA, and the horizontally protruding bearings are located at the support portion. 21A, and supports the upper rotation center shafts 26A, 28A in a substantially vertical direction. N, Lower bolt hole 2 in body side base 20
A supporting portion 21B is formed in the vicinity of 0B and offset upward from this point, and the bearing extends horizontally. It is supported vertically. The upper rotation center shafts 22A, 24A, 26A. 28A, lower rotation center shafts 22B, 24B, 26
B, 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, the main arm 32, as shown in FIG.
It is roughly shaped like a letter, and the vertical side of the letter K is the upper end fitting hole 33.
A is a large-diameter pipe portion 33 that is fitted to the upper rotation center shaft 28A on the body side, and a lower end fitting hole 33B is fitted to the lower rotation center shaft 28B on the body side. The part 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.
The lower arm 38B is fitted into the upper rotation center shaft 24A on the side of the door side base 16, and has a substantially triangular lower arm 38B with an inclined upper edge and a horizontal lower edge, and a fitting hole 39B at the tip thereof. Lower rotation center shaft 2 on the door side base 16 side
4B is fitted. Vibrator portion 3 of the upper arm 38A and lower arm 38B
A gap is formed in the vertical direction between the connection parts to 3. Further, the upper arm 38A is longer than the lower arm 38B in the vertical direction, that is, the vertical cross section thereof is made larger, so that the upper arm 38A mainly carries the load of the side door 12. Reference numeral 32A in the figure indicates a lightening hole formed in the upper arm 38A and lower arm 38B to reduce weight, and 32B indicates a hole protruding in the thickness direction along the upper and lower edges of each of the upper arm 38A and lower arm 38B. The reinforcing ribs are shown respectively. The upper rotation center shafts 24A, 28A and the lower rotation center shafts 24B, 28B for supporting the main arm 32 are as follows:
As shown in FIG. 5, the corresponding bearing is in the support portion 17A.
, 21A, 17B, and 218 from above and below.
It is a cantilevered pin with C. A bushing 46 (see FIG. 6) having a collar 46A inserted from the outer end side is press-fitted into the fitting holes 33Δ, 33B, 39A, and 39B of the main arm 32, and the bushing 46 (see FIG. 6) is inserted from the outer end side. Cantilevered pin-shaped upper rotation center shaft 24A
, 28A and the insertion portions 44C at the tips of the rotation center shafts 24B, 28B are inserted. Insertion portions 4 inserted into the bushings 46 of the upper rotation center shafts 24A, 28A and the lower rotation center shafts 248, 288
An oil groove 44D is formed in the circumferential direction in 4C, and lubricating oil is sealed therein. Furthermore, four radial oil grooves 46B are formed at equal angular intervals in the circumferential direction on the outer end surface of the collar 46A of the bushing 46 in a portion adjacent to the outer periphery of the insert 1!144c (Fig. 6). reference). Also, an upper rotation center shaft 2 for supporting the upper control arm 30A and the lower control arm 30B.
As shown in FIG.
It is a cantilevered bottle with 8B and 48G serrations. Further, at both ends of the upper control arm 30A and the lower control arm 30B, bearings are provided with support portions 17A,
A bushing 50 with an open end 50A on the sides 21A, 17B and 21B is press-fitted. The upper rotational center shafts 22A, 26A and the lower rotational center shafts 22B, 26B are inserted into the bushing 50 at their insertion portions 48B, and have serrations 48 at their tips.
The bearing C is the support part 17A, 21A, 17B and 21
B, 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 lII! It is designed to contain pure oil. Stoppers 52A and 52B, which project horizontally, are formed at the upper and lower ends of the vibrator 33 of the main arm 32, respectively. Corresponding to these stoppers 52A and 52B, stoppers 52A and 52B are in contact with the body side base 20 side when the side door 12 is in the fully open position, and the side door 12 is in contact with the stoppers 52A and 52B.
Projections 56A and 56B are provided with stopper surfaces 54A and 54B for regulating the fully open position. These protrusions 56A, 56B are arranged so that the bearings are connected to the support section 21.
The corner between the lower surface of A and the inner surface of the body side base 20 and the bearing are connected to the upper surface of the support section 21B and the body side base 2
They are formed protrudingly at each corner with the inner surface of the 0. Further, the vibe portion 33 of the main arm 32 has a torsion bar hook 58 formed to protrude horizontally at approximately the center position in the vertical direction and the body side base 20.
A door check mechanism 60 is constructed between the bearing and the support portion 21A. This door check mechanism 60 includes a torsion bar 62,
It is composed of a roller 64 and a cam plate 66. As shown in FIGS. 1 and 8, the torsion bar 62 includes, at its lower end, a substantially U-shaped curling-shaped portion 62A whose tip is bent at a right angle, and a bottom side 63A of the U-shape and a right-angled portion 62A. The torsion bar hook 58 of the vibrator section 33 is inserted between the two axes of the bending section 63B from above and below, thereby positioning the vibrator section 33 in the axial direction. Moreover, the torsion bar hook 58 is inserted from the left and right sides by the U-shaped biaxial portion 63C163D 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 62.
B, the roller 64 is rotatable from the upper end, and
They are fitted so as to be slidable in the axial direction. Reference numeral 58A in FIG. 4 is a recess formed in the torsion bar hook 58 for positioning the torsion bar 62 in the rotational direction, and 68A and 68B are formed in the upper arm 38A of the main arm 32 for positioning the torsion bar 32 between them. The protrusions for each are shown. The cam plate 66 is a flat plate-shaped member that is attached to the upper surface of the support portion 21A at a portion facing the door side base 16, and its cam surface 66A is parallel to the center axis of the vibrator portion 33. It is meant to be. Further, the lift of the cam surface 66A from the center axis of the vibrator section 33 is changed to form a moderation interval at an appropriate position when the side door 12 is opened or closed. As shown in FIG. 8, the roller 64 is elastically pressed against the cam surface 66A of the cam plate 66 by a torsion bar 62 so as to always be in line contact. Further, the roller 64 is provided with a collar 64A on the upper and lower sides, and the cam plate 66 is sandwiched between the collars 64A from above and below and rolls into contact with the cam plate 66, thereby positioning the cam plate 66 in the vertical direction. A circumferential grease groove 64G is formed on the inner circumferential side of the rolling contact portion 64B between the flange 64A of the roller 64, and heat-resistant grease is filled in the grease groove 64G, so that the durability of the roller 64 is increased. It has become. A door wire harness 70 for an electric window regulator (not shown) or the like in the side door 12 is inserted through a harness hole 72 formed on the front pillar 18 side.
At a position offset downward from this harness hole 72,
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 connected to the main arm 32.
Along the side surface of the side door 12 of the pipe portion 33 in
Further, it passes through a V-shaped portion between the upper and lower control arms 30A and 308 in the main arm 32. The wire harness 70 is located near the pipe portion 33,
It is fixed via a harness clamp 76 to a harness clamp bracket 78 formed to protrude from the body side base 2o. The harness clamp 76 is made of resin, and holds the wire harness 20 at its annular portion 76A, and at its tip portion 76B,
The attachment formed at the tip of the harness clamp bracket 78 is inserted and fixed into the hole 78A. Also, the position of the pipe portion 33 in the main arm 32 adjacent to the wire harness 70, that is, the upper arm 38
A resin harness protector 80 is attached to the vertical gap between the connecting portion of the lower arm 38B and the pipe portion 33 to the pipe portion 33, which is formed when the wire harness 70 comes into contact with the pipe portion 33. This prevents the paint from peeling off. As shown in FIG. 4, the harness protector 80 is a substantially cylindrical member that can be expanded by a vertically extending slit 80C, and has one notch 80A at each of its upper and lower ends. , 80B are formed. On the other hand, on the pipe portion 33 side, there are protrusions 82A, 82B, 82 at positions corresponding to the notches 80A, 80B of the harness protector 80 and positions corresponding to the slits 80C.
C is formed, and the harness protector 8o is connected to the pipe portion 3.
3A, these protrusions 82A to 8
Notches 80A, 80B and slit 80C engage with 2C to determine the position of harness protector 80. Here, the inch panel 12 in the side door 12
As shown in FIG. 3, the front corner portion of A 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 protruding portion 12D protrudes more forward than the rear end surface on the chamber 84 side, and forms an abbreviated weather strip mounting portion 86 in the protruding portion 12D. A door weather strip 88 is attached to this weather strip attachment portion 86 . On the other hand, a weather strip contact surface 18B of the front pillar 18 corresponding to the door weather strip 88 is formed offset from the surface 18A toward the vehicle interior 84, and when the side door 12 is fully closed, the weather strip contact surface 18B corresponds to the door weather strip 88. The abutting surface 18B is configured to come into contact with the weather strip 88 on the vehicle interior 84 side. In this case, the corner of the weatherstrip contact surface 18B, that is, the front-rear inner position 1 of the rear end surface 18C of the front pillar 18 corresponds to the front-rear position of the weatherstrip mounting portion 86, compared to the normal case. offset forward. The door side base 16 and the body side base 20
is fixed by bolts to the end panel 14 of the side door 12 and to the surface 18A of the front pillar 18, respectively, but the door side base 1
The surface 9o facing the end panel 14 of No. 6 includes a mounting surface 90A that contacts the end panel 14, and a floating surface 9 that does not make contact.
0B. This mounting surface 90A is connected to the upper and lower bolt holes 1 in the door side base 16, as shown in FIGS. 9 to 12.
6A and 16B, other parts are floating surface 9.
It is considered 0B. Further, as shown in FIGS. 13 to 16, the opposing surface 92 of the body side base 20 is a mounting surface 92 that contacts the surface 18A of the front pillar 18.
A and a non-contact floating surface 92B. As indicated by diagonal lines in FIG. 11, this mounting surface 92A is formed only around the upper and lower bolt holes 2OA 120B and the middle bolt hole 20C in the body side base 20, and at a continuous portion around these. is defined as a floating surface 92B. Next, the operation of the above embodiment will be explained. When the side door 12 is opened from the fully open state, the main arm 32 rotates between the upper rotation center shaft 28A and the lower rotation center shaft 28.
The upper control arm 31 swings counterclockwise in FIG.
The lower control arm 30B is pivoted counterclockwise in FIG. 3, and the lower control arm 30B is pivoted about the lower rotation center axis 26B. Since the main arm 32 and the upper and lower control arms 30A and 30B constitute a four-cylinder rotating link, the instantaneous rotation center 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 upper rotation center shafts 22A, 24A, 26A
, 28A and the lower rotation center shafts 22A, 22B, 24B, 2
6B are aligned on the inclined axes that intersect at one point 10A in the lower part, so that the upper end of the side door 12 that is fully opened is inclined outward, making it easy for passengers to get in and out. When opening and closing the side door, a roller 6 rotatably attached to a torsion bar 62 in a door check mechanism 60
4 is rolled into contact with the cam surface 66A of the cam plate 66 as the side door 12 swings (see FIG. 17). The torsion bar 62 supporting the roller 64 is wound around the torsion bar hook 58 of the main arm 32 at the winding-shaped portion 62A, and its upper end is a crank-shaped portion 62B, so that the torsion bar 62
receives a twisting force from the cam surface 66A of the cam plate 66 as the side door 12 swings in the opening direction. Therefore, the roller 64 is pressed against the cam surface 66A of the cam plate 66 as a reaction force of the torsional force. The cam surface 66A of the cam plate 66 is connected to the upper rotation center axis 2.
Since the distance from 8A is changed appropriately, the cam surface 6
The twisting force applied to the torsion bar 62 is changed according to the change in the lift amount of 6A. Therefore, a sense of moderation is created when opening and closing the side door 12. When the side door 12 is in the fully open position, the main arm 32
A stopper 52A protruding from the pipe portion 33 of
52B is a protrusion 5 provided on the body side base 20
It comes into contact with the stopper surfaces 54A and 54B of 6A and 56B, 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. Since it is held by the harness clamp bracket 78 on the side of the body side base 20 via the clamp 76, it swings around the harness clamp 76 when the side door 12 is opened or closed, and the main arm 32 is approximately shaped like a letter. Since the wire harness 70 passes through the V palm portion where the upper arm 38A and the lower arm 38B intersect, the wire harness 70 passes through the main arm when the side door 12 is opened and closed, as shown in FIG. 32. It does not get caught between the door side base 16 or the body side base 20. Further, the wire harness 70 is disposed adjacent to the inner side of the vibe section 33 in the main arm 32, and a harness protector 80 made of resin is elastically fitted to the projections 82A to 82C of the vibe section 33. Since the harness protector 80 is capable of contacting the wire harness 70, the wire harness 7o
This can prevent the paint on the pipe portion 33 from peeling off or the wire harness 70 from being damaged by the pipe portion 33. In the above embodiment, the side door hinge 1o has four upper rotation center shafts 22A, 24A spaced apart in the vertical direction.
, 26A, 28A and 22A, 24B, 26B, 28B
And these are connected to one door side base 1 which is long in the vertical direction.
The main arm, which is supported by the body side bases 20 of Nos. 6 and 1111 and mainly supports the multilayered side door 12, is integrated in the vertical direction, and the upper control arm 30A and the lower control arm 30B are configured as separate bodies with thin shafts. side door hinge 1
It is possible to obtain sufficient rigidity to support the side door 12 without significantly increasing the weight of the side door 12 and the stacking of the side door 12, and the attachment of the side door hinge 10 to the side door 12 and the front pillar 18A can be adjusted. The work can be made extremely easy. The main arm 32, which is integrated in the vertical direction, includes an upper control arm 30A and a lower control arm 3.
Since the main arm 3 is located on the inside in the vehicle width direction with respect to 0B, the main arm 3 is located at the center of gravity of the side door 12 in the vehicle width direction.
2 can be placed, therefore the side door hinge 1
It is possible to ideally distribute the load of the side door 12 on the load. Therefore, the side door hinge 10 itself does not waste weight, and can provide maximum rigidity with minimum weight. In particular, the main arm 32 is not only integrated with the upper and lower parts, but also has an upper rotational center axis 28A and a lower rotational center axis 28A.
Since the main arm 32 is provided with one large-diameter vibrator portion 33 that is fitted into the main arm 32, the rigidity can be increased without significantly increasing the overall weight of the main arm 32. here,
The pipe section 33 mainly handles torsional loads, and the upper arm 3
8A and the lower arm 38B1, especially the upper arm 38A, bear the load of the side door 12. The main arm 32 has a substantially doglegged shape that is convex outward in the vehicle width direction when the side door 12 is fully closed;
Since it is arranged along the shape of the outer surface 18A of the front pillar 18 in the vehicle body width direction, it can be stored in the space 34 with good space efficiency without interfering with the front pillar 18. Similarly, the upper control arm 30A and the lower control arm 30B also operate when the side door 12 is fully closed.
Since it is bent in a substantially dogleg shape that convexes inward in the width direction of the vehicle body, as shown in FIG. The door 12 can be slid forward as much as possible. Further, in the wire harness 70, the harness hole 72 on the front pillar 18 side is vertically offset from the harness hole 74 on the end panel 14 side of the side door 12, so that wires generated when the side door 12 is opened and closed are Advantageously, torsional forces in the harness 70 are absorbed by the offset. Further, the bolt holes 16A, 16B and 2OA, 20 in the door side base 16 and the body side base 20
B is formed at the upper and lower ends of each of the bearings, and supports the rotational center axis of the four-bar rotation link. , 2OA, and 20B, the side door hinge 10 can be formed as long as possible in the vertical direction to increase rigidity and effectively disperse the load of the side door 12. Furthermore, since the bolt holes and the bearings have supporting parts close to each other, it is possible to prevent excessive concentrated loads from being applied to the door side base 16 and the body side base 20. Furthermore, the facing surfaces 90 and 92 of the door side base 16 and the body side base 20 that face the end panel 14 and the front pillar 18, respectively, have only the surroundings of the respective bolt holes 16A, 16B and 2OA, 20B, 20C. Since the mounting surfaces 90A and 92A are in contact with the surface 18A of the end panel 14 or the front pillar 18, and the other parts are floating surfaces 90B and 92B that do not make contact, the side door 12 is attached using the side door hinge 10. If the car is put into the painting process in this condition, the end panel 14 of the side door 12 and the front pillar 18
Paint easily enters between the surface 18A and the door side base 16 and body side base 20. In addition, even when heated in a paint drying oven, since there are few contact surfaces between the door side base 16 and body side base 20 and the end panel 14 and front pillar 18, there is little hindrance to the temperature rise of these end panels 14 and the surface 18A.
Therefore, insufficient drying can be prevented. Further, in the above embodiment, the stoppers 52A and 52B for regulating the fully open position of the side door 12 are provided at the upper and lower ends of the vibrator portion 33 of the main arm 32, that is,
The stopper 52 is formed near the bolt holes 20A, 20B, and 20G of the body side base 20.
The tendency of A and 52B to easily deform with respect to the mounting portion of the body side base 20 on the body side is suppressed. Further, projections 56A and 56B forming stopper surfaces 54A and 54B that come into contact with the stoppers 52A and 52B are formed on the inner surface of the body side base 20, and a pair of upper and lower bearings are formed on the corners of the support portions 21A and 21B. Therefore, the impact force generated by contact with the stopper 52A152B can be reliably received. Further, the door check mechanism 60 in the above embodiment is composed of the torsion bar 62, the roller 64, and the cam plate 66 as described above, and therefore, compared to the conventional door check mechanism, it is not activated even by the adhesion of paint. It can withstand the high temperature atmosphere of a paint drying oven without causing any defects, and therefore the side door hinge 10 can be assembled before painting. Further, while the conventional door check is installed in a place where sand, mud, etc. are difficult to crowd, in the above embodiment, it is installed in a space 34 where water, sand, mud, etc. are relatively easy to crowd. However, the door check mechanism 60 in this embodiment has the advantage that it is less affected by adhesion of water, sand, or mud. In particular, even if sand or mud adheres between the roller 64 that constitutes the door checking force and the cam member 66A of the cam plate 66, the roller 64 may be bitten by sand or mud.
Therefore, the opening/closing operation force for the side door 12 does not increase, and no malfunction occurs. In particular, since grease *64C is formed inside the roller 64 and heat-resistant grease is sealed therein, the roller 64
In addition to maintaining smooth rotation, it is also possible to pass through the coating drying oven with the grease still sealed. Moreover, since the O-ra 64 is attached to the crank-shaped portion 62B of the torsion bar 62 so as to be slidable in the axial direction, the main arm 3 to which the torsion bar 62 is attached
The torsion bar hook 58 on the second side and the bearing on the body side base 20 side are attached to the support part 21A.The mutual assembly of the cam plate 66 and torsion bar 62 absorbs errors and manufacturing errors, and the roller 64 is attached to the cam plate. 66
can come into contact with the cam surface 66A. In particular, since the roller 64 is provided with a pair of ribs 64A on the upper and lower sides, and is designed to sandwich the cam plate 66 from above and below, the disposed state of the roller 64 relative to the cam surface 66A is reliably maintained. Further, since the bearing perpendicular to the upper rotational center axis 28A of the cam plate 66 is a flat member mounted on the support portion 2iA, the cam plate 66 has its cam surface 66A aligned with the upper rotational center axis 28A.
8A, that is, it can be easily formed parallel to the rotation center line of the pipe portion 33 in the main arm 32. Therefore, when the side door 12 is opened and closed, the roller 64 can always slide against the cam surface 66A under a constant condition, and the two will not be tilted or twisted. Furthermore, since the pipe portion 33 of the main arm 32 is hollow, the rigidity of the main arm 32 can be greatly increased without significantly increasing the weight. The lower rotation center shaft 28B is inserted as a separate member into the fitting holes 33A and 33B at the upper and lower ends of the pipe section 33, so compared to the case where the lower rotation center shaft 28B is an integral rotation center shaft in the vertical direction. As a result, weight reduction and assembly efficiency can be improved. Further, in the above embodiment, the front end corner of the inner panel 12A of the side door 12 on the side of the vehicle compartment 84 is projected forward and serves as a weatherstrip attachment portion 86, to which the door weatherstrip 88 is attached. The rear end surface 18C of the front pillar 8 is connected to the weatherstrip contact surface 18 corresponding to the weatherstrip mounting portion 86.
B is formed so as to come into contact with the door weather strip 88 in the vehicle width direction, so that the space 34 in which the side door hinge 10 is arranged can be configured to be small, and the rear end surface 18G of the front pillar 18 is normally By being offset further forward than the above, the ease of getting in and out of the vehicle is improved. Further, the side door hinge 10 using a four-cylinder rotary link mechanism can have a sealing structure that matches the opening/closing locus of the side door 12, so that sealing can be reliably performed when the side door 12 is fully closed. In the above embodiment, the vertically integrated main arm 32 has a substantially rectangular shape consisting of a pipe portion 33, an upper arm 38A, and a lower arm 38B, but the present invention is not limited to this. The main arm 32 is integrated in the vertical direction, and is connected to the upper rotation center shafts 24A, 2.
8A and the lower rotation center shafts 24B and 28B in a rotatable manner. Therefore, for example, the upper rotation center shaft 2 on the side door 12 side
4A and the lower rotation center shaft 24B, and the main arm 32 may have a frame shape. However, as in the embodiment shown in FIG.
When 2 is formed into a substantially oval shape, there is an advantage that interference with the wire harness 76 can be avoided and the weight can also be reduced. Further, in the above embodiment, the cam plate 66 in the door check mechanism 60 has a flat plate shape, and the upper bearing of the body side base 20 is attached to the support portion 21A, so that the cam surface 66A is attached to the main arm 32. The cam surface 66A is parallel to the rotation center axis of the pipe portion 33, regardless of the shape of the cam plate 66. Therefore, the cam plate 66 does not necessarily have to have a flat plate shape. Further, the cam surface 66A, for example, the upper bearing may be formed directly on the support portion 21A itself. Further, as shown in FIG. 18, the cam plate 66 may be provided on the support portion 17A of the upper part of the door side base 16, and further, as shown in FIG. Upper control arm 30A
and attached to the lower control arm 30B,
The bearing may be attached to the support portion 21A with the cam plate 66 centered around the upper rotation center axis 26A on the body side. [Effects of the Invention] Since the present invention is configured as described above, the side door hinge mechanism of an automobile using a four-cylinder rotating link can be used without significantly increasing the jil of the side door or the side door hinge itself. The installation has an excellent effect in that adjustment work is easy and sufficient rigidity can be provided to support the side door.

[Brief explanation of drawings]

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. FIG. 6 is a perspective view showing the bush fitted with the rotation center shaft in FIG. 5. FIG. 7 is a cross-sectional view showing how the shaft is mounted. FIG. 8 is a sectional view showing the main parts of the door check mechanism in the same embodiment, FIG. 9 is a side view showing the installed state of the door side arm in the same embodiment, and FIGS. 10 to 12. 13 is a side view showing the mounting state of the body side base in the above embodiment, and FIGS. 14 to 16 are the 1
1f7) XTV-XTVIil to XVI-XVI line fixed view Figure 17 is a plan view showing the side door hinge of the above embodiment when the side door is opened and closed, and Figures 18 and 19 are views of the door check mechanism according to the present invention. FIG. 7 is a perspective view showing another embodiment. DESCRIPTION OF SYMBOLS 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 axis (door side), 26B, 28B...Lower rotation center axis (body side), 30A...Upper control arm, 30B
...Lower control arm, 32...Main arm, 38A...Upper arm (main arm), 38B...
- Lower arm (main arm).

Claims (1)

[Claims] (1) A door side base that is formed long in the vertical direction along the swing base end of the side door and is attached to the end, and along the body side surface adjacent to the end. a body side base that is elongated in the vertical direction and is attached to the surface; four upper rotation center shafts that are supported at at least two positions each at the upper and lower parts of the door side base and the body side base; and the upper rotation center shaft. Among the four lower rotation center shafts aligned below the center axis and the upper rotation center shaft, an upper portion whose both ends are rotatably connected to one rotation center shaft of each of the body side base and the door side base. a control arm, a lower control arm whose both ends are rotatably connected to the lower rotational axis aligned with the upper rotational axis at both ends of the upper control arm, the other upper rotational axis and the other lower rotational axis; A side door hinge mechanism for an automobile, comprising: a vertically integrated main arm whose upper and lower ends and widthwise ends are rotatably connected.