JPH1199972A - Strut unit building-in jig - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simply and surely build a strut unit into a vehicle body without increasing cost by making an engaging claw in the projecting state by the weight of a mass provided on the engaging claw, and allowing a strut unit building-in jig to abut to a fitting hole from the lower side so as to be in a received state. SOLUTION: This strut unit building-in jig M is provided with a claw part 8a and a mass 8b. A strut unit S is combined with the strut unit building-in jig M by threadedly engagement, and it is inserted into the strut unit fitting hole C2 of a vehicle body C from the lower side. The claw part 8a is in the projecting state from a cutout part 10 by the weight of the mass 8b. When the claw part 8a is allowed to abut to the strut unit fitting hole C2, the claw part 8a is rotated to be received inside a side guide part 7a. This abutting is released at a final position, hence the claw part 8a becomes in the projecting state, and it is engaged with the upper edge of the strut unit fitting hole C2. After fixing the strut unit S to the vehicle body C, the strut unit building-in jig M is detached from the strut unit S.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a strut unit assembling jig used for assembling a strut unit from below into a strut unit mounting hole provided in a vehicle body.

[0002]

2. Description of the Related Art Generally, a strut unit is assembled to a vehicle body in an assembly line of an automobile by inserting an upper end of the strut unit from below into a strut unit mounting hole formed in the vehicle body and mounting the strut unit on an upper portion of the strut unit. The planted mounting bolt is inserted from below into a bolt hole formed in the vehicle body, and a nut is screwed into an upper end of the mounting bolt to be assembled. At this time, since the upper end of the strut unit has a small diameter with respect to the strut unit mounting hole, it cannot be positioned with respect to each other, and it becomes extremely difficult to insert the mounting bolt of the strut unit into a bolt hole formed in the vehicle body. Further, after inserting the mounting bolt of the strut unit into the bolt hole formed in the vehicle body, it is necessary to hold the strut unit until the nut is screwed into the upper end of the mounting bolt.

In order to solve these problems, Japanese Utility Model Application Laid-open No.
Japanese Patent Publication No. 144892 discloses a suspension unit mounting jig. By connecting this suspension unit mounting jig to the upper end of the damper, it can be smoothly inserted from below into the damper mounting hole formed in the vehicle body from the guide of the circumferential positioning member, and the circumferential positioning member is inserted into the damper mounting hole. The fitting bolt allows the mounting bolt to be smoothly inserted into the bolt hole. In addition, the suspension unit can be temporarily supported by engaging the locking claw provided on the side wall of the circumferential direction positioning member so as to be freely opened and closed with the upper edge of the damper mounting hole.

[0004]

However, in the above-described conventional suspension unit mounting jig, the projection of the locking claw in the opening direction is performed by the biasing force of the spring. When the urging force is reduced, the amount of protrusion of the locking claw in the opening direction is reduced, so that the locking claw is disengaged from the damper mounting hole during assembly, causing a problem that the suspension unit falls off. . In addition, as the press-contact portion of the locking claw pressed against the core receiving the load from the suspension unit wears, the amount of protrusion of the locking claw in the opening direction increases, and the upper end of the mounting bolt is placed on the upper surface of the bolt hole. There is also a problem that the nut cannot be screwed in without protruding. For this reason, replacement of the spring and the locking claw has to be performed periodically, resulting in an increase in cost.

An object of the present invention is to provide a strut unit assembling jig which can easily and surely assemble a strut unit to a vehicle body without increasing cost.

[0006]

According to the first aspect of the present invention, there is provided a circumferential positioning means formed in a vehicle body which can be fitted into a strut unit mounting hole from below, and is provided on a side wall of the circumferential positioning means so as to be freely opened and closed. A strut unit set comprising: an engagement claw engageable with an upper edge of the strut unit mounting hole; and coupling means provided at a central portion of the circumferential direction positioning means and detachably coupled to an upper end portion of the strut unit. In the jig, a mass is provided on the engagement claw, and the weight of the mass causes the engagement claw to protrude in the opening direction. It is characterized by being stored.

According to the present invention, the projection of the engaging claw in the opening direction is performed by the weight of the mass provided on the engaging claw. Can be reliably brought into the protruding state.

According to a second aspect of the present invention, in the first aspect of the present invention, the mass of the engaging claw is enlarged and formed in the opening / closing orthogonal direction, and a load from the strut unit is received on the enlarged surface. And

According to the present invention, the load from the strut unit can be received in a large area without using a separately enlarged surface by utilizing the mass of the engaging claw, and the wear amount is reduced due to a decrease in the surface pressure and the durability is improved. Performance can be improved.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a side view of a strut unit assembling jig according to an embodiment of the present invention. FIG. 2 is a sectional view taken along line AA of FIG. FIG. 3 is a sectional view taken along line BB of FIG. FIG. 4 is a diagram showing a use state of the strut unit assembling jig.

As shown in FIG. 4, a strut mount 1 for fixing the upper end of a strut unit S of an automobile suspension to a vehicle body C has a rubber bush 2 adhered to the inner surface thereof by vulcanization bonding. A bush receiver 3 is adhered to the lower surface of 2. By fitting the bush receiver 3 on the upper end of the piston rod S1 and fixing it with the nut 4, the strut mount 1
It is fixed to the upper end of the piston rod S1 via the rubber bush 2. Two mounting bolts 5 (one mounting bolt is not shown) are implanted upward in the strut mount 1, and the two mounting bolts 5 are provided in two bolt holes C1 formed in the vehicle body C. (One bolt hole is omitted in the drawing) from below the vehicle body C, and the strut unit S is fixed to the vehicle body C by tightening the fixing nut 6 from above the vehicle body C.

Next, a strut unit assembling jig M according to the present invention will be described with reference to FIGS. The strut unit assembling jig M includes a circumferential positioning means 7 for smoothly inserting the upper end of the strut unit S into a strut unit mounting hole C2 provided in the vehicle body C to perform circumferential positioning, and a circumferential positioning means 7. An engaging claw 8 is provided on the side wall of the strut unit for holding the strut unit S in a state where the upper end of the strut unit S is inserted into the strut unit mounting hole C2. And coupling means 9 detachably coupled to the upper end of the unit S.

The circumferential positioning means 7 includes a side guide portion 7a having a circular outer periphery of a side wall corresponding to a circular strut unit mounting hole C2 provided in the vehicle body C;
An upper guide portion 7b having a circular arc cross section extending from the upper surface to the side wall.

The engaging claw 8 is provided so as to protrude from a notch 10 formed in a side wall of the circumferential direction positioning means 7, that is, a side guide portion 7a, and is engaged with the strut unit mounting hole C2; A mass 8b provided inside the side wall of the circumferential direction positioning means 7 to make the claw 8a protrude in the opening direction by its own weight.

The coupling means 9 is formed in a circular shape so as to cover the lower open end of the side guide 7a of the circumferential positioning means 7, and is fixed to the base 9a which is fastened and fixed to the side guide 7a by the mounting screw 11. A mounting nut 9b which is welded to an opening formed at the center of the base 9a and which can be screwed to a thread formed at the upper end of the piston rod S1 of the strut unit S. Here, the engagement claws 8 located inside will be described in detail.

The claw portion 8a of the engaging claw 8 is formed in a trapezoidal shape when viewed from the side, and has a tapered shape in which a protruding end from the side guide portion 7a is inclined obliquely upward. A through hole is formed in the claw portion 8a, and the rotating shaft 12 is fitted therein. Both ends of the rotating shaft 12 are rotatably supported by a pair of supporting portions 13 erected on a base 9a of the coupling means 9. A mass 8b is provided at the opposite protruding end of the claw portion 8a.
Is formed in a substantially pentagonal shape which is enlarged in a direction orthogonal to the projection direction of the claw portion 8a when viewed from above. The lower surface of the mass 8b abuts on the upper surface of the mounting nut 9b of the coupling means 9 over a wide range of substantially pentagonal shape, and the clockwise rotation of the engaging claw 8 is restricted. The engaging claws 8 are provided at three locations on the base 9a at equal intervals in the circumferential direction, and these three engaging claws 8 are engaged with the strut unit mounting holes C2.

Next, the strut unit assembling jig M
The procedure for assembling the strut unit S to the vehicle body C in the case where is used will be described. Prior to assembling the strut unit S to the vehicle body C, the jig M for assembling the strut unit is preliminarily attached to the piston rod S of the strut unit S.
The mounting nut 9b of the connecting means 9 is screwed into a screw portion formed at the upper end of the first member 1. By raising the strut unit S in the wheel house in this state, the circumferential positioning means 7 provided integrally with the coupling means 9 is inserted from below into the strut unit mounting hole C2 of the vehicle body C. At this time, since the upper guide portion 7b of the circumferential direction positioning means 7 is formed in a curved cross section from the upper surface to the side wall, the strut unit mounting hole C is formed.
2 is inserted smoothly. After the insertion, the side guide portion 7a of the circumferential positioning means 7 is formed in a circular shape corresponding to the circular strut unit mounting hole C2.
Positioning in the circumferential direction is performed. As a result, the strut unit S positioned in the circumferential direction with respect to the strut unit assembling jig M is also positioned in the circumferential direction with respect to the strut unit mounting hole C2 of the vehicle body C. The two mounting bolts 5 implanted in the strut mount 1 are smoothly inserted into the two bolt holes C1 provided in the vehicle body C.

Until the circumferential positioning means 7 is inserted into the strut unit mounting hole C2 at the final position, 3
The claw portions 8a of the individual engaging claws 8 project from the cutouts 10 formed in the side guide portions 7a of the circumferential positioning means 7 by the weight of the mass 8b. 8a comes into contact with the strut unit mounting hole C2 from below, whereby the engaging claw 8 rotates counterclockwise against the clockwise force of the engaging claw 8 by the mass 8b, and the claw portion 8a
Is housed inside the side guide 7a. When the contact of the claw 8a with the strut unit mounting hole C2 is released at the final position, the engaging claw 8 is rotated by the clockwise force of the mass 8b, and the claw 8a protrudes from the notch 10 again. In this state, the lower surface of the claw 8a is engaged with the upper edge of the strut unit mounting hole C2. Thereby, the strut unit S is held in the state shown in FIG. Thereafter, the fixing nut 6 is screwed into the upper end of the mounting bolt 5 protruding upward from the bolt hole C1 and fastened, whereby the upper end of the strut unit S is fixed to the vehicle body C, and the strut unit assembling jig M is It is removed from the upper end of the strut unit S.

Next, the operation of the present embodiment will be described. Since the engaging claw 8 is caused to protrude from the notch 10 by the clockwise force due to the weight of the mass 8b, the claw 8a is reliably protruded regardless of the number of times of use. be able to. The mass 8b is formed in a substantially pentagonal shape which is enlarged in a direction perpendicular to the projecting direction of the claw portion 8a when viewed from above, and the lower surface of the mass 8b is
The strut unit S is held against the vehicle body C in the state shown in FIG.
b can be received in a wide range of portions, and wear due to a decrease in surface pressure can be suppressed.

[0020]

As described above, according to the present invention, the engaging claws can be reliably projected regardless of the number of times the strut unit assembling jig is used. Since the durability can be improved by the suppression, it can be used for a long time, and the increase in cost due to replacement of parts can be suppressed.

[Brief description of the drawings]

FIG. 1 is a side view of a strut unit assembling jig according to an embodiment of the present invention.

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

FIG. 3 is a sectional view taken along line BB of FIG. 2;

FIG. 4 is a diagram illustrating a use state of a strut unit assembling jig.

[Explanation of symbols]

 C vehicle body C2 strut unit mounting hole S strut unit M strut unit assembling jig 7 circumferential positioning means 8b mass 8 engaging claw 9 coupling means

Claims (2)

[Claims] 1. A circumferential positioning means formed in a vehicle body and capable of being fitted into a strut unit mounting hole from below, and provided on a side wall of the circumferential positioning means so as to be openable and closable to engage with an upper edge of the strut unit mounting hole. A strut unit assembling jig comprising: a possible engaging claw; and a coupling means provided at a central portion of the circumferential positioning means and detachably coupled to an upper end of the strut unit. The strut unit is provided, wherein the engaging claw is made to protrude in the opening direction by the weight of the mass, and the strut unit is made to be stored in the closing direction by contacting the strut paper unit mounting hole from below. Assembly jig. 2. The strut unit assembling jig according to claim 1, wherein the mass of said engaging claw is enlarged and formed in the opening / closing orthogonal direction, and a load from the strut unit is received on the enlarged surface. Utensils.