JPH04129306U - Suspension arm support structure - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a suspension arm support structure that is maintenance-free, easy to assemble, and has low friction. [Structure] In a vehicle independent suspension system, a ball joint 1 is assembled to a knuckle support 13 that constitutes a knuckle joint of an axle, and suspension arms are attached to both front and rear shaft parts 3a and 3b that are integral with the ball part 2 of this ball joint 1. A pair of front and rear outer ends of 10 (11) were connected with bolts 7 and nuts 8.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This invention is a support structure for suspension arms in independent suspension systems for buses and other vehicles. Regarding construction.

0002

[Conventional technology]

Traditionally, the independent air spring type front suspension for large buses , as shown in FIG.

0003 In other words, there are parallel links of unequal length on both the left and right parts of the vehicle body, such as the center frame. The inner ends of the upper arm 10 and the lower arm 11 are pivotally supported to form a The outer ends of these arms 10 and 11 are attached to a knuckle support attached to the wheel 12 side. connected to port 13.

0004 An air spring 14 is interposed between the upper end of the knuckle support 13 and the vehicle body. On the other hand, the bracket 15 at the bottom of the knuckle support 13 and the vehicle body side bracket (not shown) A shock absorber 16 is interposed between the racket and the racket. In addition, 17 in Figure 3 is This is a stabilizer installed between the left and right lower arms 11.

[0005] As shown in FIG. 4, both arms 10 and 11 have an A-shape in plan view. The outer end of each of the two separated pieces is connected to the knuckle support 1. Threaded portions 18 at both ends of a knuckle shaft (pivot shaft) 18 that passes through 3 in the front-rear direction. a, 18b via threaded bushings 19 so as to be swingable.

[0006] A grease reservoir is formed between the inner surface of each threaded bushing 19 and both end surfaces of the knuckle shaft 18. A grease reservoir (not shown) is defined in both grease reservoirs 20. Grease is supplied via the driver's switching operation. There is. 21 in FIG. 4 is a grease nipple.

[0007] In addition, as shown in FIG. 5, the suspension arm 22 as described above is oscillates relative to the ring 23 via a tapered roller bearing 24 and a ring nut 25. Some are made to support freely.

[0008]

[Problem that the idea aims to solve]

In the threaded bush structure shown in Figs. 3 and 4, the Forced lubrication is always required, making maintenance troublesome and increasing costs. Invite.

[0009] With the bearing structure shown in Figure 5, it is necessary to adjust the bearing preload. However, there were some difficulties in assembly.

0010 In addition, both structures allow only relative rocking in a predetermined direction, so the vehicle The stress from the shaft side cannot be released sufficiently, causing the arm to twist and cause friction. There was a problem that the amount of

[0011] Therefore, the purpose of this invention is to achieve maintenance-free and easy assembly. To provide a support structure for a suspension arm that can also achieve low friction. It is in.

0012

[Means to solve the problem]

In order to achieve the above object, the configuration of the present invention includes, in an independent suspension system of a vehicle, Assemble the ball joint to the knuckle support that makes up the axle knuckle joint. , a suspension arm is attached to the shaft part that is integrated with the ball part of this ball joint. It is characterized by having its outer ends screwed together.

[0013]

[Effect]

According to the above configuration, relative movement in all directions is allowed, and stress from the axle side is satisfied. I was let go in minutes.

[0014]

【Example】

FIG. 1 is a sectional view of an arm support section showing a first embodiment of the present invention. As shown in the figure, a ball joint 1 is attached to the arm support part of the knuckle support 13. is assembled in advance by press-fitting, etc. This ball joint has ball part 2 and this Both the front and rear shaft portions 3a and 3b are integral with the ball portion 2, and the shaft portions 3a and 3b are also in spherical contact with the ball portion 2. The socket part 4 is made of synthetic resin such as Delrin (trade name of acetal resin), and this socket It consists of an outer collar 5 that fits into the socket part 4, and in the illustrated example, the button A bolt insertion hole 6 is formed to pass through the shaft portion 2 and both the front and rear shaft portions 3a, 3b in the front-rear direction. will be accomplished.

[0015] The bolts are attached to the shaft ends of both the front and rear shaft portions 3a and 3b of the ball joint 1. The upper and lower suspensions are connected by bolts 7 and nuts 8 that pass through the bolt insertion holes 6. A pair of front and rear outer ends of the arm 10 (11) are joined together. In addition, 9 in the figure is the It is mu.

[0016] The other suspension configurations are the same as in Fig. 3, so we will refer to Fig. 3 here. Detailed explanation will be omitted.

[0017] In this way, in this embodiment, the knuckle support 13 and the suspension arm 10 (11) are connected via ball joint 1, allowing relative movement in all directions. is allowed. This allows sufficient stress to be released from the axle side, and the suspension No torsion is input to the pension arm 10 (11).

[0018] In addition, since no lubrication is required, maintenance-free operation is achieved, and assembly is easy. Even if a hit occurs, all you have to do is pass the bolt 7 through and tighten it with the nut 8, which speeds up the work. I can.

[0019] FIG. 2 is a sectional view of an arm support section showing a second embodiment of the present invention. This has suspension arms on both the front and rear shaft parts 3a and 3b of the ball joint 1. This is an example in which the front and rear outer ends of the frame 10 (11) are connected separately with screws 7a. , the same functions and effects as in the first embodiment can be obtained.

[0020] Note that the present invention is not limited to the above-mentioned embodiments, and may be applied within the scope of the gist of the present invention. Needless to say, various changes can be made.

[0021]

[Effect of the idea]

As explained above, according to the present invention, the outer end of the suspension arm is connected to the ball joint. Since it is supported by the knuckle support through the joint, maintenance is easy. It is possible to make the assembly easier and to reduce the friction.

[Brief explanation of drawings]

FIG. 1 is a sectional view of an arm support section showing a first embodiment of the present invention.

FIG. 2 is a sectional view of an arm support part showing a second embodiment of the present invention.

FIG. 3 is an overall perspective view of a conventional independent air spring type front suspension.

FIG. 4 is a partially cutaway plan view of the arm support section.

FIG. 5 is a partially cutaway plan view of a different arm support portion.

[Explanation of symbols]

1 ball joint 2 Ball part 3a, 3b shaft part 4 Socket part 10 (11) Suspension arm 7 bolts 7a screw

Claims (1)

[Scope of utility model registration request] [Claim 1] In an independent suspension system for a vehicle, a ball joint is assembled to a knuckle support that constitutes a knuckle joint of an axle, and the outer end of a suspension arm is screwed to a shaft part that is integrated with the ball part of this ball joint. Features a suspension arm support structure.