JP2822424B2 - Trunk lid opening and closing structure - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a trunk lid opening / closing structure.

<Conventional Technology> As a conventional trunk lid opening / closing structure, there is one as shown in FIGS. 4 to 7 [Refer to the Automotive Engineering Handbook (published by the Society of Automotive Engineers of Japan, 1983), Vol. 6, page 1-13. ).

In the figure, reference numeral 1 denotes a hinge arm, one end of which is fixed to the back surface of the trunk lid 2, and the other end of which is rotatably supported by a vehicle body panel 4 located above the front side of the trunk room 3.
The hinge arm 1 has a bent beam shape so as not to interfere with the vehicle body panel 4 when the trunk lid 2 is opened and rotated, and the entire hinge arm 1 projects into the trunk room 3.

Reference numeral 5 denotes a torsion bar, on each side of which a crank portion 6 having a constant width l is formed by bending, and two torsion bars are provided facing each other in a vehicle width direction (W direction in the drawing) by three fixing brackets 7a to 7c. It is. In the drawings, only one torsion bar 5 is shown as a representative for convenience. The fixing brackets 7a to 7c supporting the torsion bar 5
The torsion bar 5 is attached to the lower surface of the vehicle body panel 4.
It engages and supports each location.

And 8 is a link. The link 8 is formed by joining two metal plates. One end 9 of the link 8 is bifurcated, and is rotatably supported with the hinge arm 1 sandwiched therebetween. The other end 10 has a U-shaped receiving part 11
The crank portion 6 of the torsion bar 5 is engaged with the receiving portion 11. Therefore, the hinge arm 1 and the crank part 6 are connected via the link 8, and the torsion bar 5 is twisted with the closing rotation of the trunk lid 2, and the torsion torque generated at that time is applied to the crank part. 6 to the hinge arm 1 to apply a restoring force to the trunk lid 2 in the opening direction.

<Problem to be Solved by the Invention> However, in such a conventional technique, the receiving portion 11 formed at the other end 10 of the link 8 is simply engaged with the crank portion 6 of the torsion bar 5. While the engaging state between the receiving portion 11 of the link 8 and the crank portion 6 is unstable and the opening / closing operation of the trunk lid 2 is repeated, the other end 10 of the link 8 In some cases, a positional shift occurred within the width l of the portion 6 (see FIG. 7). Then, since the input from the hinge arm 1 is applied to the crank portion 6 from an oblique direction, an abnormal noise is generated when the trunk lid 2 is opened and closed, or the crank portion 6 and the fixed brackets 7a and 7b are deformed. In the worst case, the torsion bar 5 may fall off the fixing brackets 7a and 7c.

The present invention has been made by paying attention to such a conventional technique, and has as its object to provide a trunk lid opening / closing structure capable of solving the above-mentioned problems.

<Means for Solving the Problems> In order to achieve the above object, the opening / closing structure of the trunk lid according to the present invention has a length equivalent to the width of the crank portion and is substantially centered more than left and right ends. A cylinder having a small-diameter groove formed around the circumference is fitted to the crank portion, and a receiving portion at the other end of the link is engaged with the groove of the cylinder.

<Operation> Since the receiving portion provided at the other end of the link is engaged with the groove of the cylindrical body fitted to the crank portion, the other end of the link is misaligned with respect to the cylindrical body (that is, the crank portion). Without causing
The transmission of input from the hinge arm to the crank portion when the trunk lid is closed and rotated, and the transmission of torsion torque from the crank portion to the hinge arm when the trunk lid is opened and rotated can be reliably performed.

<Embodiment> A preferred embodiment of the present invention will be described below with reference to FIGS. In addition, the same reference numerals are given to portions common to the related art, and overlapping description will be omitted.

Reference numeral 12 denotes a cylinder, which is formed of a hard synthetic resin, and is fitted to the crank part 6 of the torsion bar 5. The cylindrical body 12 has a length substantially corresponding to the width size l of the crank part 6, and has a circumferential groove 13 formed at the center thereof. A receiving portion 11 formed at the other end 10 of the link 8 is engaged with the groove portion 13, and a diameter d of a portion corresponding to a bottom portion of the groove portion 13 is equal to a curved portion 11 a of the receiving portion 11 of the link 8. It just fits. Therefore, the groove 13 of the cylindrical body 12 comes into contact with the entire curved portion 11a of the receiving portion 11 of the link 8, so that the contact is smooth, no abnormal noise is generated, and the crank 6 is directly in point contact. The receiving portion 11 is less likely to be damaged by contact (friction) with the crank portion 6 as compared with the related art.

Since the receiving portion 11 at the other end 10 of the link 8 and the groove 13 of the cylinder 12 fitted to the crank portion 6 are engaged as described above, the other end 10 of the link 8 is always in the groove 13 of the cylinder 12. (That is,
(The center position of the crank part 6), and the positional deviation of the crank part 6 within the width l is restricted, so that the input from the hinge arm 1 to the crank part 6 when the trunk lid 2 is closed and rotated. When the trunk lid 2 is opened and rotated, the torsional torque transmission from the crank portion 6 to the hinge arm 1 can be reliably performed.

<Effect of the Invention> The opening / closing structure of the trunk lid according to the present invention is as described above, and the receiving portion provided at the other end of the link is engaged with the groove of the cylindrical body fitted in the crank portion. Since the other end of the link is not displaced with respect to the cylinder (that is, the crank portion), the input transmission from the hinge arm to the crank portion when the trunk lid is closed and rotated, and the trunk lid is Torsion torque transmission from the crank section to the hinge arm when opening and rotating can be performed reliably, and noise can be generated even if the trunk lid is repeatedly opened and closed, and the crank section and the fixed bracket can There is no deformation.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an opening / closing structure of a trunk lid according to one embodiment of the present invention, FIG. 2 is a side view as viewed from a direction indicated by an arrow II in FIG. 1, and FIG. FIG. 4 is a sectional view taken along the line III, FIG. 4 is a perspective view showing a rear part of the vehicle with a trunk lid opened, and FIG. 5 is a perspective view showing a conventional example of the present invention; FIG. FIG. 6 is a side view seen from the direction of arrow VI in FIG. 5, and FIG. 7 is a side view corresponding to FIG. 6 showing a state where the other end of the link is displaced. DESCRIPTION OF SYMBOLS 1 ... Hinge arm 2 ... Trunk lid 4 ... Body panel 5 ... Torsion bar 6 ... Crank part 8 ... Link 9 ... One end of link 10 ... The other end of link 12 ... Cylindrical body 13 ... Groove

Claims (1)

(57) [Claims] A pair of hinge arms fixed to a trunk lid are rotatably attached to a vehicle body panel, one end of a link is pivotally supported on the hinge arm, and a receiving portion provided at the other end of the link is a torsion bar. In the opening / closing structure of the trunk lid to be engaged with the crank portion, a tubular body having a length equivalent to the width of the crank portion and having a groove having a diameter smaller than the left and right end portions in the substantially central portion is formed around the circumference. A trunk lid opening / closing structure, wherein the trunk lid is fitted into a flank portion and a receiving portion at the other end of the link is engaged with a groove portion of the cylindrical body.