JP2010126086A - Bracket structure of lateral rod - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a bracket structure of a lateral rod capable of preventing breakage of a bolt and a bracket 2 by avoiding generation of torsional force between the bracket and a frame of a vehicle body, and of reducing the number of components. <P>SOLUTION: In the bracket structure of the lateral rod having a lateral rod for connecting a frame of a vehicle body to an axle housing, and a bracket for mounting the lateral rod on the frame, the bracket is mounted on the frame of the vehicle body in an inclined manner by the predetermined angle with respect to the perpendicular line, and has a supporting pin with both ends thereof being fixed to and supported by the bracket, and a bush part which is turnably connected to a center part of the supporting pin and connected to the lateral rod, and further has two bolts which are penetrated through both ends of the bracket from both ends of the supporting pin and jointly fastened to the frame. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a lateral rod mounting bracket structure for an automobile, and more particularly to a lateral rod bracket structure including a lateral rod for connecting a frame of a vehicle body and an axle housing, and a bracket for mounting the lateral rod to the frame.

FIG. 3 is a schematic perspective view showing a mounting bracket structure of a lateral rod of the vehicle, and FIG. 4 is a front view of the bracket of FIG.
In FIG. 3, the frame of the vehicle body is denoted by reference numeral 4, and a lateral rod 1 is attached to the frame 4 via a mounting bracket 2. That is, as shown in FIG. 4, the connecting line YY of the lateral rod 1 and the bracket 2 is fastened to the frame 4 with four bolts 3 so as to be in the vertical line direction.

Support pins 20 are press-fitted at right angles to the connecting line YY at both ends 2 a of the bracket 2, and the ends are fastened with nuts 21. A bush portion 12 fixed to an end portion of the lateral rod 1 is provided at the center portion between both end portions 2 a of the support pin 20, and the inner periphery of the bush portion 12 and the center portion of the support pin 5. Between them.
Accordingly, regarding the movement of the lateral rod 1 in the vertical line direction, that is, the movement in the connecting line YY direction, the bush part 12 is located between the inner periphery of the bush part 12 and the central part of the support pin 5. By fitting in a freely rotatable manner, it can be interlocked without rotational resistance.

  Patent Document 1 (Japanese Patent Application Laid-Open No. 11-105521) discloses an air suspension having a trailing arm and a re-jet axle. A lateral rod mounting structure capable of supporting a suspension is shown.

JP-A-11-105521

  The lateral rod 1 has one end attached to the vehicle body frame 4 via the mounting bracket 2 and the other end connected to the axle housing. Therefore, as shown in FIG. 4, the force applied to the lateral rod 1 from the axle housing is inclined in the XX direction by the movement of the axle housing with respect to the direction of the connecting line YY, that is, the direction of the vertical line. Act.

Therefore, a twisting force is generated between the bracket 2 and the frame 4 of the vehicle body in the XX direction by the lateral rod 1 via the support pins 20. Such a torsional force is liable to cause damage to the bolt 3 and the bracket 2 that are tightened between the bracket 2 and the frame 4 of the vehicle body.
In addition, the support pin 20 and the nut 21, and the bolt 4 for the frame 4 and the bracket 2 are used for fastening, and the bracket 2 is connected to the lateral rod 1 and the bracket 2 is attached with separate bolts. Therefore, the number of parts is large.

  In view of the problems of the prior art, the present invention has a lateral rod bracket structure in which the generation of torsional force between the bracket and the vehicle body frame is avoided to prevent damage to the bolts and brackets and the number of parts is reduced. The purpose is to provide.

  The present invention achieves such an object, and includes a lateral rod bracket structure that includes a lateral rod that connects a frame of a vehicle body and an axle housing, and a bracket that attaches the lateral rod to the frame. A support pin that is fixedly supported, and a bush portion that is pivotally connected to a central portion of the support pin and connected to the lateral rod, and extends from both ends of the support pin to both ends of the bracket. A plurality of bolts fastened together with the frame are provided.

  In this invention, it is preferable that the bracket is attached to the frame of the vehicle body at a certain angle with respect to a vertical line, and that the certain angle of inclination is a tangential direction of the movement locus of the lateral rod. It is set to be arranged according to.

  In this invention, it is preferable that the bracket is configured so that an angle formed between a line connecting the centers of the bolts arranged at both ends of the plurality of bolts and the vertical line can be adjusted. Mounted on.

  According to the present invention, the bracket for attaching the lateral rod to the frame is connected to the lateral rod by being pivotally connected to the support pin having both ends fixedly supported by the bracket and the central portion of the support pin. A bushing portion, and is attached to the frame by a plurality of bolts, for example, two bolts on the left and right sides, that are fastened to the frame through both ends of the bracket from both ends of the support pin. The lateral rod and the bracket can be fastened to the frame at a time only by tightening the two bolts that pass through the both ends of the bracket and fasten to the frame by fastening together.

  This makes it easy to fasten the lateral rod and bracket to the frame. Also, the lateral rod and bracket are fastened to the frame at the same time with two bolts. The number of parts can be reduced as compared with connecting to the bracket and attaching the bracket with separate bolts.

The bracket is attached to the frame of the vehicle body at a certain angle with respect to a vertical line, and the certain angle of inclination is set so that the bush portion is arranged in a tangential direction of the movement locus of the lateral rod. In other words, the bracket is attached to the frame of the vehicle body at a certain angle with respect to the vertical line in the direction in which the torsional force is generated by the lateral rod, and the vertical line is moved by the movement of the axle housing. If the angle θ of the direction inclined with respect to the direction is matched, the generation of the torsional force is avoided.
As a result, it is possible to avoid breakage of the bolt and the bracket that are tightened between the bracket and the frame of the vehicle body due to generation of torsional force.

  In addition, the bracket is configured to be attached to the frame of the vehicle body so that an angle formed by a line connecting the centers of the respective bolts arranged at both ends of the plurality of bolts and the vertical line can be adjusted. For example, by aligning the line connecting the centers of the two bolts on the left and right sides in a direction perpendicular to the direction of inclination with respect to the direction of the vertical line due to the movement of the axle housing, between the bracket and the frame by the lateral rod The torsional force can be avoided by fine adjustment.

  Hereinafter, the present invention will be described in detail with reference to the embodiments shown in the drawings. However, the dimensions, materials, shapes, relative arrangements, and the like of the components described in this embodiment are not intended to limit the scope of the present invention only to specific examples unless otherwise specified. Only.

FIG. 1 is a schematic perspective view showing a mounting bracket structure of a lateral rod of a vehicle according to an embodiment of the present invention, and FIG. 2 is a cross-sectional view taken along line AA of FIG.
In FIG. 1, the frame of the vehicle body is denoted by reference numeral 4, and a lateral rod 1 is attached to the frame 4 via a base plate 13 for attachment.
As shown in FIG. 1, a bracket 10 for attaching the lateral rod 1 to the frame 4 is attached to the frame 4 of the vehicle body at a predetermined angle θ with respect to the vertical line WW.
The constant angle θ is an angle in a direction inclined with respect to the direction of the vertical line WW by the movement of the axle housing 20, that is, as shown in FIG. 4, the force applied from the axle housing to the lateral rod 1 is the axle housing 20. Is adjusted to an angle inclined with respect to the direction of the vertical line WW, that is, the line that forms the connecting line YY of the lateral rod 1 and the bracket 2.

That is, as shown in FIG. 5, the movement locus of the axle housing 20 is as indicated by an arrow C, and at the attachment portion of the lateral rod 1 with the bracket 2, the locus is indicated by an arrow XX. Therefore, the vehicle body is adjusted by adjusting the angle θ formed with the vertical line WW so as to match the tangential direction D of the movement locus of the mounting portion of the lateral rod 1 and the bracket 2 in the normal range of the movement locus of the axle housing 20. The frame 4 is attached.
FIG. 5 is a side view showing a rear suspension structure in which the lateral rod 1 is provided. The rear suspension structure is constituted by a leaf spring 22, and a front end portion is fixed to the frame 4 by a spring bracket (not shown), and an air spring 24 is attached to the rear end portion. The axle housing 20 is attached to the leaf spring 22. A lateral rod 1 is installed between the side wall of the differential mechanism housing formed at the center of the axle housing 20 in the vehicle width direction and the frame 4 of the vehicle body.

In FIG. 2, the bracket structure includes a support pin 11 fixed at both ends to the bracket 10 and a bush portion 12 rotatably connected to a support surface 11 a at the center of the support pin 11. The bush portion 12 is connected to the lateral rod 1.
The two bolts 3 and 3 pass through both ends of the bracket 10 from both ends of the support pin 11, and both ends of the support pin 11 and the bracket 10 are fastened to the frame 4 by the nut 5. ing.

As shown in FIG. 1, the bracket 10 is attached to the frame 4 of the vehicle body so that an angle θ formed by a line ZZ connecting the centers of two bolts 3 and 3 and the vertical line WW can be adjusted. ing.
That is, if the two bolts 3 and 3 are configured to have a clearance with respect to the bolt hole 3a or the bolt hole 3 is a long hole, a line ZZ connecting the centers of the two bolts 3 and 3 is connected to the axle housing. Of the torsional force between the bracket 10 and the frame 4 by the lateral rod 1 by finely adjusting and matching with the direction perpendicular to the angle θ in the direction inclined with respect to the direction of the vertical line WW by the movement of The occurrence avoidance can be fine-tuned.

As described above, according to this embodiment, the bracket 10 is attached to the vehicle body frame 4 with respect to the vertical line WW in the direction in which the torsional force is generated by the lateral rod 1 (the XX direction in FIG. 4). If the fixed angle θ and the angle in the direction inclined with respect to the direction of the vertical line WW by the movement of the axle housing coincide with each other, the vertical line can be moved by the movement of the axle housing. Generation | occurrence | production of the said torsional force can be avoided because the direction of the bracket 10 corresponds to the twist direction with respect to the direction of WW.
Thereby, it is possible to avoid the damage of the bolt 3 and the damage of the bracket 4 which are tightened between the bracket 10 and the frame 4 of the vehicle body due to the generation of torsional force. The durability of can be improved.

  Further, according to the present invention, the support pin 11 whose both ends are fixedly supported by the bracket 10, the bush portion 12 that is rotatably connected to the center portion of the support pin 11 and is connected to the lateral rod 1, The bracket 10 can be attached to the frame 4 by two bolts 3 and 3 that pass through both ends of the bracket 10 from both ends of the support pin 11 and are fastened to the frame 4 together by fastening. Therefore, the lateral rod 1 and the bracket 10 can be attached to the frame 4 at a time only by tightening the two bolts 3 and 3 by tightening together with the frame 4 through both ends of the bracket 10 from both ends of the support pin 11. Can be fastened to.

  Thereby, the fastening operation of the lateral rod 1 and the bracket 10 to the frame 4 can be easily performed, and the lateral rod 1 and the bracket 10 are fastened to the frame 4 at a time by the two bolts 3 and 3. Compared to the case where the bracket 10 is connected to the lateral rod 1 and the bracket 10 is attached with the separate bolt 3 as in the prior art, the number of parts can be reduced.

  According to the present invention, it is possible to provide a lateral rod bracket structure in which the generation of torsional force between the bracket and the vehicle body frame is avoided to prevent damage to the bolts and brackets, and the number of parts is reduced.

It is a schematic perspective view which shows the mounting bracket structure of the lateral rod of the vehicle concerning the Example of this invention. It is AA sectional drawing of FIG. 1 which shows the Example of this invention. It is a schematic perspective view which shows the mounting bracket structure of the lateral rod of the vehicle concerning a prior art. It is a front view of the bracket of FIG. It is a side view of the rear suspension which shows the Example of this invention.

Explanation of symbols

1 Lateral rod 3 Bolt
3a Bolt hole 4 Frame 5 Nut 10 Bracket 11 Support pin 11a Support surface 12 Bush part 13 Base plate θ Constant angle W Vertical line

Claims (3)

In a lateral rod bracket structure comprising a lateral rod for connecting a frame of a vehicle body and an axle housing, and a bracket for attaching the lateral rod to the frame,
A support pin having both ends fixedly supported by the bracket; and a bushing portion rotatably connected to a central portion of the support pin and connected to the lateral rod. A lateral rod bracket structure comprising a plurality of bolts that pass through a portion and are fastened to the frame together.   The bracket is attached to the frame of the vehicle body at a certain angle with respect to a vertical line, and the certain angle of inclination is set so that the bush portion is arranged in the tangential direction of the movement locus of the lateral rod. The lateral rod bracket structure according to claim 1, wherein:   The bracket is attached to the frame of the vehicle body so that an angle formed between a line connecting a center of each bolt arranged at both ends of the plurality of bolts and the vertical line can be adjusted. The lateral rod bracket structure according to claim 1.

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