JPH041258Y2 - - Google Patents

Description

[Detailed Description of the Invention] "Technical Field" The present invention relates to a hinge structure for a vehicle lid, such as a trunk lid, and in particular to a type of hinge structure in which a hinge arm pivotally attached to a vehicle body is biased in the opening direction by a spiral spring. Regarding improvement of hinge structure.

"Prior art and its problems" Figures 3 to 5 are
This figure shows the hinge structure of a vehicle lid (trunk lid) proposed in No. 57113 (Utility Model Application No. 61-173677). The hinge arm 11 made of a hollow pipe body has a U-shaped part 11a to avoid interference with the vehicle body.The outer end of this U-shaped part 11a is fixed to the trunk lid 12, and the inner end is fixed to the vehicle body. It is pivotally connected to a fixed base 13. 14 is its hinge pin. This hinge pin 14 has a sliding groove 16 in the diametrical direction, and a spring hook pin 17 is implanted in the hinge arm 11. In the reduced diameter state of the spiral spring 15, the inner end hook 15a at the center thereof is engaged with the slot groove 16, and the outer end hook 15b thereof is engaged with the spring hanging pin 17, so that the hinge arm 1
1 (trunk lid 12) in the direction of opening.

The hinge structure of the lid with the above configuration has excellent strength because the hinge arm 11 is made of a pipe body, and since the trunk lid 12 is biased in the opening direction by the spiral spring 15, it can be attached by, for example, a torsion bar. The feature is that the space in the trunk room can be made larger compared to when gaining power.

However, in this hinge structure, since the hinge pin 14, which is the center of rotation of the trunk lid 12, and the center of the spiral spring 15 are in the same position, the distance R from the center of the hinge pin 14 to the outer end of the spiral spring 15, that is, the spiral The maximum radius R of the spring 15 increases,
It later became clear that this caused a problem in that the space inside the car became narrow. That is, when the upward protrusion amount R of the spiral spring 15 from the hinge pin 14 increases, this protrusion amount R will protrude toward the inside of the vehicle (rear tray portion).
As a result of the trunk room becoming larger, the interior space of the vehicle becomes narrower.

``Purpose of the invention'' The purpose of the invention is to obtain a hinge structure that uses a spiral spring to bias the vehicle lid in the opening direction without sacrificing the interior space of the vehicle. shall be.

Another object of the present invention is to obtain a hinge structure for a vehicle lid that can reliably transmit the spring force of a spiral spring to the vehicle lid.

"Summary of the invention" This invention provides a spring hanging pin located below the center of rotation of the hinge arm on a base fixed to the vehicle body, and pivots one end of the interlocking arm coaxially with this spring hanging pin. An interlocking groove extending in the longitudinal direction is formed in this interlocking arm, and an interlocking pin fixed to the hinge arm is fitted into this interlocking groove so as to be relatively slidable, and a spring hanging member fixed to this interlocking arm and a base side It is characterized in that both ends of a spiral spring that biases the vehicle lid in the direction of opening are respectively hooked between the spring hook pin.

``Embodiments of the invention'' The invention will be described below with reference to illustrated embodiments. Figures 1 and 2 show an embodiment of the present invention.
Components that are the same as those of the conventional device shown in FIGS. 3 to 5 are given the same reference numerals. Hinge arm 11
Like the conventional device, the U-shaped portion 11a has a trunk lid 12 fixed to its outer end, and its inner end is pivotally connected to a base 13 by a hinge pin 20. Unlike the conventional structure, this hinge pin 20 is a simple pin and does not have a function of locking the inner end hook 15a of the spiral spring 15.

Separately from the hinge pin 20, the base 13 has a structure located below the hinge pin 20.
A spring hanging pin 21 is fixed. This spring hanging pin 21 has its oval part 21a attached to the base 13.
The inner end hook 15a of the spiral spring 15 is fitted into an oval hole 13a formed in the side wall of the spiral spring 15 to restrict its rotation, and a diametrical groove 22 is formed on the opposite side of the oval portion 21a. is locked in this sliding groove 22.

An interlocking arm 24 is rotatably attached to the spring hanging pin 21 coaxially therewith. A spring bracket 25 is fixed to the interlocking arm 24 by spot welding or the like, and the outer end hook 15b of the spiral spring 15 is locked to the spring bracket 25. Further, this spring hanging pin 21 is provided with an interlocking groove 26,
An interlocking pin 27 fixed to the hinge arm 11 is fitted into this interlocking groove 26.

Inner end hook 15a of spiral spring 15
The outer end hook 15b is engaged with the sliding groove 22 of the spring hanging pin 21 and the spring hanging bracket 25, respectively, when the spring 15 is in a reduced diameter state, and the interlocking arm 24 is moved as shown in FIGS. 2
In the figure, it is urged to rotate counterclockwise. Therefore, the hinge arm 11, that is, the trunk lid 12, which is interlocked with the interlocking arm 24 via the interlocking groove 26 and the interlocking pin 27, is biased in the opening direction. Note that 28 is a cushion rubber fixed to the base 13, which softens the shock when the hinge arm 11, which rotates in the opening direction by the spiral spring 15, collides with the base 13.

This device with the above configuration has a spiral spring 1
5 is located below the center of rotation of the hinge arm 11 (hinge pin 20), so if the maximum radius of the spiral spring 15 is set to be smaller than the distance between the hinge pin 20 and the spring hanging pin 21, this spring 15 does not protrude above the hinge pin 20. Furthermore, even if it protrudes, the amount of protrusion is smaller than when the center of the spiral spring 15 coincides with the hinge pin 20. As a result, the amount of protrusion of the hinge pin 20 from the center toward the passenger compartment becomes smaller, making it possible to enlarge the passenger compartment. spiral spring 1
5 is located lower, the interior space of the lid, such as the trunk room, becomes narrower, but
It is more valuable to make the passenger compartment (rear tray part) wider. Furthermore, since the outer end of the spiral spring 15 is latched by a spring latching member 25 fixed to an interlocking arm 24 coaxial with the spring latching pin 21, even if the distance between the spring latching pin 21 and the hinge pin 20 is apart, , the force of the spiral spring 15 can be reliably transmitted to the hinge arm 11. Furthermore, the spring hanging pin 21 is the hinge pin 20
The condition that the spring hooking member 25 is located below the linking arm 24 is satisfied, and the spring hooking member 25 only needs to be located on the interlocking arm 24, compared to conventional devices in which the spring hooking position is limited to the hinge pin and one point on the hinge arm. , the degree of freedom in the spring hanging position increases, making it easier to hang the spring. Further, since there is no need to provide a spring hanging member to the hinge arm, there is a corresponding degree of freedom in the shape.

In the above embodiment, Utility Application No. 60-57113 (Utility Model Application No. 57113)
61-173677), the hinge arm 11 is made of a pipe material, and therefore has the effect of being excellent in strength. However, the present invention is not concerned with the strength of the hinge arm 11, and has the effect of widening the interior space regardless of the shape of the hinge arm 11. It may be formed from any material.

``Effect of the invention'' As described above, according to the invention, in a lid hinge structure that uses a spiral spring as a spring means for biasing the lid in the opening direction, a spiral spring is placed below the center of rotation of the hinge arm to which the lid is fixed. Since the center of the spring is located, the amount of protrusion of the hinge structure toward the vehicle interior can be reduced, and the interior space can therefore be expanded. Furthermore, the spring force of the spiral spring is transmitted to the interlocking arm coaxial with the spring hanging pin, and is transmitted to the hinge arm via the interlocking groove of this interlocking arm and the interlocking pin fixed to the hinge arm. Even if the spring hanging pin is separated, the spring force can be reliably transmitted to the hinge arm. Furthermore, the spring hanging pin only needs to be located below the hinge pin, and the spring hanging member only needs to be on the interlocking arm, compared to conventional devices where the spring hanging position is limited to the hinge pin and one point on the hinge arm. The degree of freedom in the spring hanging position increases, making it easier to hang the spring. Furthermore, since there is no need to provide a spring hanging member on the hinge arm, there is a degree of freedom in its shape.

[Brief explanation of the drawing]

Fig. 1 is an exploded perspective view showing an embodiment of the hinge structure of the vehicle lid of the present invention, Fig. 2 is a front view of the same assembled state, and Fig. 3 is a perspective view of the trunk lid illustrated as a vehicle lid in an open state. Figure 4 is a perspective view of the hinge structure proposed by the applicant in Utility Application No. 60-57113 (Utility Model Application No. 61-173677), and Figure 5 is a cross section taken along line V-V in Figure 4. It is a diagram. DESCRIPTION OF SYMBOLS 11... Hinge arm, 12... Trunk lid, 13... Base, 15... Spiral spring, 15a... Inner end hook, 15b... Outer end hook, 20... Hinge pin, 21... Spring hanging pin, 22... ...Sliding groove, 24...Interlocking arm, 25
...Spring bracket, 26...Interlocking groove, 27
...Interlocking pin, 28...Cushion rubber.

Claims (1)

[Scope of Claim for Utility Model Registration] A hinge structure for a vehicle lid in which one end of a hinge arm is pivotally connected to a base fixed to a vehicle body, and a vehicle lid is fixed to the other end of the hinge arm, A spring hanging pin is provided below the center of rotation of the hinge arm, one end of the interlocking arm is pivoted coaxially with the spring hanging pin, and an interlocking groove extending in the longitudinal direction is formed in the interlocking arm. Then, the interlocking pin fixed to the hinge arm is fitted into the interlocking groove so as to be relatively slidable, and between the spring hooking member fixed to the interlocking arm and the spring hooking pin, the vehicle A hinge structure for a vehicle lid, characterized in that both ends of a spiral spring that biases the lid in the direction of opening are hooked.