JPH056226Y2 - - Google Patents

Description

[Detailed explanation of the idea] [Industrial application field]

This invention relates to a vehicle alignment adjustment device that adjusts the alignment of wheels in, for example, a suspension system of an automobile, and more specifically, to one that can be used without any inconvenience even in narrow spaces.

[Prior art and its problems] For example, the suspension system of an automobile is equipped with a
As shown in Japanese Unexamined Patent Publication No. 57-60809 or Japanese Utility Model Application Publication No. 58-132706, alignment adjustment devices are provided, and conventionally, there are the following types of alignment adjustment devices. As shown in FIG. 4, a pair of brackets d, which protrude from the vehicle body a and face each other at a predetermined interval,
A guide plate e having guide walls g on both sides is fixed on the outer surface of d, and eccentric cams h, h are engaged with the guide walls g on each of the guide plates e, e. installed. Then, position the bearing part b of the suspension arm between the pair of brackets d and d, and tighten the bolt j.
is connected to the other bracket d and guide plate e through the long hole f provided through the engagement hole i of one eccentric cam h, the guide plate e, and the bracket d, through the through hole c of the bearing part b. is inserted into the elongated hole f and the engagement hole i of the eccentric cam h. The engagement hole i of the eccentric cam h is formed in a non-circular shape, and the outer periphery of the bolt j has a shape corresponding to the shape of the engagement hole i, so that the relative rotation of the eccentric cam h with respect to the bolt j is Forbidden and bolt j
When the eccentric cams h, h are rotated, the eccentric cams h, h are configured to integrally rotate in the same phase. Therefore, by rotating the bolt j, the eccentric cams h, h are guided by the guide wall g and change their relative positions with respect to the guide plates e, e, so that the bolt j changes the respective lengths of the guide plate e and the bracket d. The position of the bearing part b can be changed by moving within the holes f, f. After making the desired alignment adjustment in this way, screw the nut k onto the bolt j and tighten the bolt j.
Fix it in place. At this time, if you turn bolt j and tighten it with nut k, the adjusted position of bearing part b will change, so you will inevitably have to keep bolt j fixed and tighten it by turning nut k. Must be done. By the way, the length of the lower part of the neck of the bolt j is actually quite long, not only because the distance between the pair of brackets d and d is required, but also because the nut k is screwed into the threaded end part. becomes. Therefore,
In order to employ the alignment adjustment device as shown in Fig. 4, a relatively large space is required on the right side of one bracket d to insert and remove the bolt j having the above length. However, there is a problem in that the employment conditions are severely restricted. This idea was devised under the above-mentioned circumstances, and aims to provide a vehicle alignment adjustment device that has a simple structure, does not involve difficult manufacturing processes, and can be used even in narrow spaces. That is the issue.

[Means to solve the problem]

In order to solve the above problems, the present invention takes the following technical measures. a pair of support members that are provided on the vehicle body at a predetermined interval and each has a raised inner wall on its outer surface; A cam part whose outer periphery cam surface is engaged with the raised inner wall of one support member and a tool engaging part located outside this cam part. a support shaft member having a proximal end and an axial threaded hole on the distal end surface; and a support shaft member that is fitted to the distal end of the support shaft member so as not to be relatively rotatable, and is identical to a cam portion on the proximal end side of the support shaft member. a cam member having an outer peripheral cam surface that engages with the raised inner wall of the other support member; and a bolt that is screwed into the screw hole at the tip of the support shaft member from outside the cam member. It is characterized by being prepared.

[Action and effect]

In the present invention, the bolt is screwed into the screw hole from the outside of the cam member fitted to the support shaft member, and the cam part and the cam member are pressed against each outer surface of the pair of support members, A support shaft member that pivotally supports the bearing portion of the suspension arm is fixed to the support member. At this time, the bolt merely threads through the screw hole and does not rotate the cam portion and the cam member located on both sides of the support shaft member. Therefore, the once determined position of the spindle member relative to the support member will not be changed by the fixing means using the bolt. That is, the support shaft member is passed through the long hole of one support member into the bearing portion of the suspension arm and into the long hole of the other support member, so that the outer circumferential cam surface of the cam portion engages with the guide wall of the one support member. Insert until Then, the cam member is attached to a portion of the support shaft member that protrudes from the elongated hole of the other support member, and its outer cam surface is engaged with the guide wall.
Further, the bolt is temporarily tightened into the screw hole from the outside of the cam member in advance. The support shaft member is provided with a tool engagement portion, and the support shaft member can be easily rotated using a thin tool such as a spanner. When the support shaft member is rotated in this manner, the cam portion and the cam member are guided by the respective guide walls of each support member and integrally perform cam movement in the same phase, thereby causing the support shaft member to rotate. moves within the elongated hole of each support member. At this time, it goes without saying that the bearing portion of the suspension arm, which is pivotally supported by the support shaft member, changes its relative position with respect to the support member. Once the position of the support shaft member is determined, the above bolt is fully tightened into the screw hole, but since the cam part and cam member do not rotate even when the bolt is turned, the position of the bearing part of the suspension arm will change. do not. As mentioned above, the cam part located along the outer surface of each support member at both ends of the support shaft member and the adjusted rotational position of the cam member are determined by screwing the bolt into the tip screw hole of the support shaft member. It is fixed by In this case, the length of the support shaft member is sufficient to form the cam part and the tool engaging part on the base end side, and to fit and support the cam member at the distal end, Unlike before, there is no need to extend the screw shaft necessary for screwing a nut onto the tip. Therefore, the length of the support shaft member in the present invention may be relatively shorter than the length of the bolt j in the structure shown in FIG. 4 of the present invention. As a result, in the present invention, the space to be secured outside both support members can be made smaller than in the conventional example. In addition, if the screw hole does not pass through, each threaded part of the bolt and screw hole is sealed to avoid damage to the threaded part due to rust, etc., so the suspension arm can be reliably maintained for a long time. can hold the bearing portion in place.

[Explanation of Examples]

Hereinafter, embodiments of the present invention will be described in detail with reference to FIGS. 1 to 3. In this example, the alignment adjustment device 3 of the present invention is applied to the suspension system of an automobile to connect the suspension arm 2 and the vehicle body 1 and to adjust the toe of the wheels. That is, the bearing portion 2 of the suspension arm 2
The support shaft member 7 that pivotally supports the vehicle body 1 moves within the elongated holes 4a, 4a formed in each of the support members 4, 4, while being supported by a pair of support members 4, 4 provided on the vehicle body 1. The relative position of the bearing portion 2a with respect to the support member 4 is changed. The support members 4, 4 are comprised of a pair of brackets 5, 5 protruding from the vehicle body 1 so as to face each other in parallel at a constant interval, and a guide plate 6 fixed to the outer surface of the brackets 5. Become. The guide plate 6 is provided with guide walls 6a extending perpendicularly to the outer surface of the bracket 5 so as to face each other in parallel on both sides. The long diameters of the long holes 4a, 4a correspond to the guide walls 6a, 6a.
It is formed to extend in a direction perpendicular to the vehicle (in the longitudinal direction of the vehicle). The support shaft member 7, which is slidably inserted into each of the elongated holes 4a, 4a, has a disc-shaped cam portion 8 biased toward one end in the radial direction of the support shaft member 7 by welding or the like on the outer periphery of one end thereof. The outer cam surface 8a of this cam portion 8 is fixed to one guide plate 6.
The guide walls 6a, 6a are engaged with each other. The above cam part 8
Further outward, a hexagonal nut-shaped tool engaging portion 9 is integrally provided on the outer end surface, and by applying a tool to this tool engaging portion 9, the support shaft member 7 can be easily rotated. I can do it. Further, a screw hole 7a is formed from the outer end surface opposite to the tool engaging portion 9 to the middle of the support shaft member 7 in the axial direction. Now, each elongated hole 4 of the pair of support members 4, 4
a, 4a through which the support shaft member 7 is inserted, and the through hole 2 of the bearing portion 2a located between each bracket 5, 5.
The suspension arm 2 is supported by the support shaft member 7 inserted in b. At this time, the outer circumferential cam surface 8a of the cam portion 8 engages with each guide wall 6a, 6a of the one (left side in FIG. 1) guide plate 6, and a cam member 10 having the same shape as the cam portion 8 However, the outer cam surface 10a is
The cam portion 8 of the support shaft member 7 is engaged with each guide wall 6a, 6a of the guide plate 6 (on the right side in the figure).
Similarly to the cam part 8, it is eccentrically mounted on the outer periphery of the end opposite to the cam part 8. As clearly shown in FIG.
The cam member 10 is provided with a non-circular engagement hole 10b corresponding to the shape of this attachment portion and is fitted to the support shaft member 7 so as not to be relatively rotatable. As a result, if the support shaft member 7 rotates,
The cam portion 8 and the cam member 10 rotate integrally in the same phase. By the way, the alignment adjustment device 3 having the above configuration
The alignment adjustment for the suspension arm 2 is performed as follows. The cam portion 8 and the cam member 10 located on both sides of the support shaft member 7 are rotated by the rotation of the support shaft member 7, and are guided by the respective guide walls 6a, 6a of the guide plates 6, 6 to rotate the cam. Do exercise.
As a result, the support shaft member 7 moves within the elongated holes 4a, 4a while being regulated by the elongated holes 4a, 4a of each of the support members 4, 4, and the position of the bearing portion 2a is adjusted to the elongated holes 4a, 4a. Displace it in the major axis direction. At this time, since the support shaft member 7 is provided with the tool engaging portion 9, the support shaft member 7 can be sufficiently rotated even with a small tool such as a spanner. After the position adjustment of the bearing portion 2a of the suspension arm 2 is completed as described above, the cam member 10
Fully tighten the bolt 11 that was temporarily tightened into the screw hole 7a from the outside through the washer 12.
The support shaft member 7 is fixed to the support members 4, 4. At this time, since the support shaft member 7, that is, the cam portion 8 and the cam member 10 do not rotate with the rotation of the bolt 11, the adjusted position of the bearing portion 2a does not change. As can be seen from the above, the length of the support shaft member 7 in the present invention is such that the tool engaging portion 9 and the cam portion 8 can be formed on the proximal end side, and the cam member 10 can be fitted on the distal end side. If you have the 4th
Unlike the bolt j in the conventional example shown in the figure, there is no need to form an extended screw shaft portion on the tip side for screwing a nut. Therefore, the length of the support shaft member 7 can be shorter than the length of the bolt j in the conventional example. Thus, the length of the bolt 11 in the present invention is sufficiently short compared to the distance between the pair of support members 4, 4. For this reason, the alignment adjustment device 3 having the structure of the present invention can reduce the space that must be secured on the outside of both supporting members 4, 4, and the alignment adjustment device 3 can be used even in a relatively narrow place. 3 can be placed. Further, since the threaded portion is not exposed to the outside, damage to the threaded portion due to occurrence of rust, etc. is ensured, and the bearing portion of the suspension arm can be reliably held for a long period of time. Note that the scope of the present invention is not limited to the embodiments described above. For example, the design of the means for preventing the cam member from rotating relative to the support shaft member can be modified in various ways other than the above embodiment. Further, by taking advantage of the property that the alignment adjustment device of the present invention can be used in a narrow space, the present invention can be applied between the strut and the front wheel support shaft to perform camber adjustment.

[Brief explanation of drawings]

1 is an enlarged sectional view of section A in FIG. 3, FIG. 2 is a sectional view taken along the - line in FIG. 1, FIG. 3 is a partial perspective view of a suspension system for an automobile according to an embodiment of the present invention, and FIG. is a sectional view of a conventional example. 1...Vehicle body, 2...Suspension arm, 2
a...Bearing part (of the suspension arm), 4...
...Supporting member, 4a...Long hole, 6a...Guide wall, 7
... Support shaft member, 7a ... Screw hole, 8 ... Cam part,
8a...Outer cam surface (of the cam part), 9...Tool engaging part, 10...Cam member, 10a...Outer cam surface (of the cam member), 11...Bolt.

Claims (1)

[Scope of Claim for Utility Model Registration] A pair of support members provided on the vehicle body at a predetermined interval and each having a raised inner wall on its outer surface, and a pair of support members that are inserted into respective elongated holes drilled in each of the support members. and a cam part whose outer circumferential cam surface is engaged with the raised inner wall of one of the support members, and a cam part extending outwardly from this cam part. a support shaft member having a tool engagement portion located at the base end and an axial screw hole at the distal end surface; A cam member having the same outline as the cam part on the end side and whose outer circumferential cam surface engages with the upright inner wall of the other support member, and a cam member that is inserted into the screw hole at the tip of the support shaft member from the outside than the cam member. An alignment adjustment device for a vehicle, comprising a bolt to be screwed.