JPH05330456A - Hinge part structure of trunk lid - Google Patents

Abstract

PURPOSE:To permit the arrangement in the restricted space of a trunk room without giving influence to other member, maintaining the turning operation of a trunk lid and the holding of angle for a long period by an initial set force and change the turning operation force in a simple nanner. CONSTITUTION:One edge 24c of a hinge member 24 which supports a trunk lid 13 is installed in turnable manner on a hinge bracket 22 fixed on a car body side, and a link mechanism 32 which consists of two link members 27 and 29 for link-joining the hinge bracket 22 and the hinge member 24 is installed. An energizing means (balancer 33) for always applying the energizing force in the opening direction on the hinge member 24 through the link mechanism 32 is arranged, and the link mechanism 32 is operated within the region which nearly corresponds to the turning region for the turn of the hinge member 24 during the time when the trunk lid 13 is set from a perfectly closed state to a perfectly opened state.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure of a hinge portion for rotatably (openably and closably) supporting a trunk lid of an automobile.

[0002]

2. Description of the Related Art FIGS. 5 and 6 show a conventional hinge portion structure of a trunk lid in an automobile, in which 1 is a hinge member attached to the trunk lid and 2 is a vehicle body (for example, a rear body). A hinge bracket 3 fixed to a wind lower panel is a torsion bar formed by bending a single linear elastic member into a predetermined shape.

One end portion 1a of the above-mentioned hinge member 1 is rotatably attached around a hinge shaft 4 which is installed on a hinge bracket 2, and the other end is attached to the back surface of the front end of the trunk lid. .. The U-shaped one end 3 a of the torsion bar 3 is attached to the hinge bracket 2, and the other end 3 b of the torsion bar 3 is inserted into the hole 5 formed in the hinge member 1. As a result, the hinge member 1 and thus the trunk lid are constantly urged by the torsion torque of the torsion bar 3 in the direction of arrow A (opening direction) in FIG.

However, when the trunk lid is locked in the fully closed state, the hinge member 1 is held at the position shown by the solid line in FIG. 6 accordingly. Then, with the unlocking of the trunk lid, the hinge member 1 and the trunk lid are smoothly rotated in the direction of arrow A about the hinge shaft 4 by the torsion torque of the torsion bar 3 to the position shown by the dashed line in FIG. The trunk lid is moved forward and held in the open position with a predetermined wide angle.

FIG. 7 shows a hinge structure of a conventional trunk lid using a tension coil spring as the balancer 6. As shown in FIG. 7, in this hinge structure, a hinge shaft 4 is arranged at a corner between a partition panel 7 and a rear wind lower panel 8 that partition a vehicle compartment and a trunk room, and the hinge member is centered around the hinge shaft 4. 1 is rotatably mounted, and a balancer 6 composed of a tension coil spring is installed between a bracket 9 fixed to the hinge member 1 and a vehicle body (not shown).

However, the hinge member 1 and the trunk lid attached to the hinge member 1 are always urged by the spring force of the balancer 6 in the direction of arrow B in FIG.
When the lid of the trunk lid is opened, the hinge member 1 is configured to rotate from the position indicated by the solid line in FIG. 7 to the position indicated by the alternate long and short dash line.

[0007]

However, in the case of the torsion bar type hinge structure shown in FIGS. 5 and 6, it is necessary to dispose the hinge bracket 2 on the front side of the hinge shaft 4, which results in space limitation. Will be subject to restrictions. That is, generally, the hinge shaft 4 of the trunk lid needs to be set at a position where the volume of the luggage compartment is not impaired as much as possible and the luggage compartment lid is wide open so that luggage can be taken in and out easily. It is desirable to place it as frontward as possible. However, since the hinge bracket 2 is located ahead of the hinge shaft 4 as described above, there is a problem in that the hinge shaft 4 must be arranged rearward by that amount. Also, the space in the luggage compartment cannot be used effectively.

Further, in the case of the torsion bar system,
Torsion bar 3 to hold the angle when opening the trunk lid
It is necessary to set the caulking force by the twisting force and the caulking force of the hinge shaft 4, but it is very difficult to set the caulking force and it is very difficult to keep the caulking force constant for a long period of time.

Further, in the case of the balancer type hinge structure shown in FIG. 7, the force f in the rotational direction due to the spring force F of the balancer 6 and the moment M about the hinge axis 4 due to the weight of the trunk lid are balanced. In order to do so, the point of action P of the tension coil spring (balancer 6) must be positioned as far forward as possible. Therefore, as shown in FIG. 7, the partition panel 7 has a recessed portion 7 protruding forward.
It is necessary to form a and dispose the bracket 9 in the recess 7a.

The present invention has been made in view of such an actual situation, and an object thereof is to be arranged in a limited narrow space without affecting the peripheral vehicle body shape and the like. Moreover, it is an object of the present invention to provide a hinge portion structure of a trunk lid having a structure capable of maintaining a caulking force related to opening / closing of the trunk lid to a rotational operation force at initial setting for a long period of time.

[0011]

In order to achieve the above object, according to the present invention, one end of a hinge member for supporting a trunk lid is rotatably attached to a hinge bracket fixed to the vehicle body, and A link mechanism including two link members for linking and connecting the hinge bracket and the hinge member is provided, and a biasing unit that constantly applies a biasing force in the opening direction to the hinge member via the link mechanism is provided.
The link mechanism is operated in a region substantially corresponding to a rotation region in which the hinge member rotates while the trunk lid changes from the fully closed state to the fully opened state.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS.

FIG. 1 shows a rear portion of an automobile 10 having a hinge portion structure for a trunk lid according to the present invention. In FIG. 1, 11 is a rear window glass, 12 is a side quarter panel, and 13 is a trunk lid. , 14 is a rear wind lower panel, 15 is a rear end panel, 1
6 is a rear bumper. 2 and 3 show a hinge portion structure 17 for rotatably (openably and closably) supporting the trunk lid 13 described above.

In FIG. 2, reference numeral 18 denotes a partition panel disposed in the rear portion of the vehicle compartment. The partition panel 18, the rear wind lower panel 14 and the side quarter panel 12 define a trunk room 19. .. An extension panel 20 is installed between the partition panel 18 and the rear wind lower panel 14, and these panels 14, 1
A part of the hinge bracket 22 is housed and arranged in a space region 21 surrounded by 8 and 20, and is fixed to the extension panel 20 by screwing.

Further, the extension panel 2 described above.
As shown in FIGS. 2 and 3, an elongated hole 23 extending in the front-rear direction is formed at 0, and the hinge member 24 can be pivoted to the hinge bracket 22 while being inserted into the elongated hole 23. It is installed in such a condition. That is, the above-mentioned hinge member 24 has a substantially U-shaped hinge main body portion 24a.
And a trunk lid mounting portion 24b connected to the hinge main body portion 24a, and is formed in a shape that does not interfere with the rear window lower panel 14 and the partition panel 18 when the trunk lid 13 is opened and closed. Then, a portion of the hinge main body portion 24a on the one end 24c side is inserted into the elongated hole 23 of the extension panel 20, and the hinge shaft 25 attached to the one end 24c is rotated to the hinge shaft 25 erected in the hinge bracket 22 in a caulked state. It is movably pivoted. Thus, the hinge shaft 25 of the hinge member 24 is arranged in the space region 21, that is, the most corner portion of the trunk so that a sufficient trunk lid opening angle can be taken. On the other hand, the front end edge of the trunk lid 13 is integrally attached to the attachment portion 24b of the hinge member 24 by bolting or the like, and the trunk lid 13 is supported by the pair of left and right hinge members 24.

As described above, the extension panel 20 is provided with the elongated hole 23 for inserting the hinge member 24. In order to compensate for the decrease in strength due to the existence of the elongated hole 23, the hinge bracket 22 is provided. For this, a structure having a sufficient strength is used.

As shown in FIGS. 2 and 3, a link bracket 26 is integrally attached to the hinge member 24 near the curved portion of the hinge body 24a. And
One end of the first link lever 27 is rotatably attached to the link bracket 26 about a support shaft 28, and one end of the second link lever 29 supports the support shaft 30 on the hanging piece 22a of the hinge bracket 22. It is rotatably attached to the center, and the other ends of the first and second link levers 27 and 29 are rotatably connected to each other by a rivet 31. Thus, the hinge bracket 22 and the hinge member 24 fixed to the vehicle body side are the link mechanism 3 including the first and second link levers 27 and 29.
2 are linked to each other.

Further, one end of the balancer 33 composed of a tension coil spring is attached to the first link lever 27, and the other end (not shown) is attached to the vehicle body side. Therefore, the hinge member 24 is constantly urged in the opening direction of the trunk lid by the spring force (tensile force) of the balancer 33 described above. When the lid of the trunk lid is closed, a trunk lid lock mechanism (not shown) is used to lock the trunk lid as shown in FIGS.
Is held together with the trunk lid 13 at the position indicated by the solid line.

Further, the operating area of the above-mentioned link mechanism 32,
That is, when the trunk lid 13 rotates from the fully closed position to the fully open position, the first and second link levers 27, 29
Is substantially the same as the area in which the hinge member 24 and the link mechanism 32 are rotated when the trunk lid 13 is rotated from the fully closed position to the fully opened position, which is projected from the side surface. It is configured. As a result, the operating area of the link mechanism 32 is substantially limited to the operating area of the hinge member 24, so that the space in the trunk room 19 is not used.

Next, the operation of the hinge structure constructed as described above will be described. First, when the trunk lid 13 is closed, the trunk lid 13 is locked in the fully closed position by a locking mechanism (not shown), and accordingly, the hinge member 24 receives the spring force from the balancer 33 as shown in FIG. It is located at the position shown.

Under such a condition, the trunk lid 1
When the lock of 3 is released, as the link mechanism 32 is operated by the spring force acting on the first link lever 27, the hinge member 24 and the trunk lid 13 center around the hinge shaft 25. In FIG. 2, the trunk lid 13 is opened by rotating in the direction of arrow C. Specifically, the link mechanism 32 operates from the state shown by the solid line in FIG. 4 to the state shown by the alternate long and short dash line, and accordingly, the hinge member 24 is smoothly rotated from the position shown by the solid line in FIG.
The trunk lid 13 is held in the fully open position while maintaining a predetermined wide angle by the combined force of the spring force of the balancer 33 and the caulking force of the hinge shaft 25, the support shafts 28 and 30, and the rivet 31.

According to the hinge portion structure of the trunk lid 13 as described above, the link mechanism 32 operates substantially within the rotation region of the hinge member 24, and therefore has the following advantages. That is, of the hinge member 24 and the link mechanism 32, the link mechanism 32 does not project and operate more than the portion N (see FIG. 4) closest to the partition panel 18 and faces the hinge panel 25 and the hinge member. 24 can be arranged as close to the partition panel 18 as possible.
The volume of 9 is not impaired. Therefore, even in a limited narrow space where a large space for holding the torsion bar 3 on the bracket 2 as shown in FIG. 5 cannot be taken, the shape of other parts such as the partition panel 18 can be changed. It is possible to dispose the hinge mechanism without performing the above operation, and further, the opening angle of the trunk lid 13 can be set to be large, and a sufficient space for loading and unloading luggage into and from the trunk room 19 can be secured. Further, when the luggage compartment lid is closed after the luggage is put into the luggage compartment, the link mechanism 32 does not protrude from the rotation area of the hinge member 24 and hit the luggage.

Further, according to the present example, since there are many rotating parts due to the caulking (the hinge shaft 25, the support shafts 28, 30 and the rivets 31), the caulking force related to the opening and closing of the trunk lid 13 can be dispersed to each rotating part. The initially set force for holding the trunk lid can be maintained for a longer period than in the case where there is only one caulking portion.

When it is desired to change the spring force of the balancer 33 in response to changes in the weight of the trunk lid 13 (installation of optional parts such as rear spoiler), the spring engagement position on the vehicle body side is changed in several steps. This can be done very easily. Therefore, the work is easier than replacing the torsion bar.

Further, in the case of this example, the link mechanism 32
By changing the above, the opening / closing operation force of the trunk lid 13 can be set constant according to the weight of the trunk lid 13 and the spring force of the balancer 33.

The above is a description of one embodiment of the present invention.
The present invention is not limited to the embodiments described above, and various modifications and changes can be made based on the technical idea of the present invention. For example, the first link lever 2 to the hinge member 24
The attachment position of 7 may be set inside the hinge body 24a having a substantially U shape. Further, the balancer 33 is not limited to the tension coil spring, but a gas spring or the like may be used.

[0027]

As described above, according to the present invention, a link mechanism including two link members is provided in order to rotate the trunk lid to obtain a predetermined opening angle, and the link mechanism is provided in the rotation region of the hinge member that supports the trunk lid. Since it is configured to operate the link mechanism in a substantially corresponding region, the hinge portion can be arranged in the limited space of the trunk room without changing the shape of other members, and It becomes possible to arrange the hinge shaft at a position where the volume of the luggage compartment is not impaired and the luggage compartment lid can be opened wide.

Further, since the two link members are used as described above, the number of rotating portions due to caulking increases,
Along with this, the caulking force related to opening / closing of the trunk lid is distributed to the respective rotating parts. Therefore, the initially set caulking force can be kept constant over a longer period than in the case where the caulking portion is at one location on the hinge shaft.

Further, the urging force of the urging means for constantly urging the link mechanism (for example, the balancer 33 shown in the embodiment) can be changed more easily than the replacement of the torsion bar, and the link mechanism can be changed. By changing the above, the opening / closing operation force of the trunk lid can be set to a constant value corresponding to the weight of the trunk lid and the urging force of the urging means.

[Brief description of drawings]

FIG. 1 is a perspective view of a rear portion of an automobile including a hinge portion structure for a trunk lid according to the present invention.

FIG. 2 is a sectional view taken along line AA in FIG.

FIG. 3 is a perspective view showing a hinge portion structure of the trunk lid according to the present invention.

FIG. 4 is a side view schematically showing the operation of the hinge structure described above.

FIG. 5 is a perspective view showing a hinge structure of a conventional trunk lid.

FIG. 6 is a side view schematically showing the operation of the conventional hinge part structure described above.

FIG. 7 is a cross-sectional view showing a hinge portion structure of a conventional trunk lid using a balancer composed of a tension coil spring as a biasing means of a hinge member.

[Explanation of symbols]

 13 Trunk lid 17 Hinge structure 18 Partition panel 19 Trunk room 20 Extension panel 22 Hinge bracket 23 Long hole 24 Hinge member 24c One end 25 Hinge shaft 27 First link lever 29 Second link lever 32 Link mechanism 33 Balancer (Tension coil spring) )

Claims (2)

[Claims] 1. A link composed of two link members, wherein one end of a hinge member supporting a trunk lid is rotatably attached to a hinge bracket fixed to a vehicle body side, and the hinge bracket and the hinge member are linked together. A mechanism is provided, and a biasing means for constantly applying a biasing force in the opening direction to the hinge member via the link mechanism is provided, and the hinge member rotates while the trunk lid changes from the fully closed state to the fully opened state. A structure of a hinge portion of a trunk lid, wherein the link mechanism is configured to be operated in a region substantially corresponding to a rotating region in which it moves. 2. The hinge bracket is attached to an extension panel arranged between a partition panel and a rear wind lower panel which form a trunk room, and one end of the hinge member is rotatably attached to the hinge bracket. 2. The hinge for the trunk lid according to claim 1, wherein the center of rotation of the hinge member is arranged inside a closed cross-sectional shape portion surrounded by the partition panel, the rear window panel and the extension panel. Part structure.