JPH0647011U - Trunnion shaft mounting structure - Google Patents

Abstract

(57) [Summary] [Object] The present invention aims to provide a mounting structure for a trunnion shaft that ensures the connection between the trunnion shaft and the trunnion bracket. A trunnion shaft 7 is provided with a recess 1 and a trunnion bracket is provided with a hole 6a at a position corresponding to the recess. A knock pin 2 for engaging the recess 1 and the hole 6a is inserted, and the knock pin 2 is inserted into the hole 6a. A spring 4 that presses is inserted, and a bolt 4 that is screwed into the hole to close the hole is provided.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a mounting structure for mounting a trunnion shaft on a frame via a trunnion bracket.

[0002]

[Prior art]

 For example, as shown in FIG. 2, a trunnion shaft 7 is fixed to a trunnion bracket 6 attached to a frame 5, and a spring seat 8 is rotatably attached to an end portion of the trunnion shaft 7 by an end plate 9. A trunnion type suspension system in which a spring 10 is attached to the spring sheet 8 and rear axles 11 and 12 are provided at both ends of the spring 10 to position the rear axles 11 and 12 with torque rods 13, 14, 15 and 16 is known. Has been.

With reference also to FIG. 3, the trunnion shaft 7 has a tip of a knock bolt 20 screwed into a screw hole 18 provided in the trunnion bracket 6 in a recess 17 provided in the trunnion shaft 7. Is inserted and fixed with a lock nut 19.

[0004]

[Problems to be solved by the device]

 However, as shown in FIG. 4, for example, when the vehicle travels on an uneven terrain, the frame 5 is twisted and the trunnion shaft 7 is rotated, so that an excessive force is generated at the tip of the knock bolt 20 and the knock bolt and the lock nut. There is a problem of loosening or falling off.

Therefore, an object of the present invention is to provide a trunnion shaft mounting structure that ensures the coupling between the trunnion shaft and the trunnion bracket.

[0006]

According to the present invention, the trunnion shaft is provided with a recess, the trunnion bracket is provided with a hole at a position corresponding to the recess, and a knock pin for engaging the recess and the hole is inserted. A spring that presses the knock pin is inserted into the hole, and a bolt that is screwed into the hole to close the hole is provided.

[0007]

[Action]

 In the trunnion shaft mounting structure configured as described above, the trunnion shaft is fixed to the trunnion bracket with a knock pin, and the bolts are attached via springs, so even if the frame is twisted, a force will be generated only on the knock pin. The bolt does not loosen because no force is applied to the bolt.

Further, since the spring is provided, the knock pin does not rattle.

[0009]

【Example】

 Hereinafter, embodiments of the present invention will be described with reference to the drawings.

In FIG. 1, a trunnion shaft 7 is provided with a knock hole 1 that is a recess, and a trunnion bracket 6 is provided with a hole 6 a having the same diameter as the knock hole at a position that fits into the knock hole 1. A screw hole is provided on the outside of the.

A knock pin 2 is inserted into the knock hole 1 and the hole 6 a of the trunnion bracket 6, and a bolt 4 is screwed into the end of the knock pin 2 via a spring 3.

Therefore, even if a torque such as A or B is applied to the knock pin on the trunnion shaft 7 due to uneven terrain or the like, the trunnion shaft 7 is separated from the bolt 4 and is not loosened by the force applied to the bolt. .

Further, since the knock pin is biased by the spring 3 toward the center of the trunnion shaft, it does not rattle.

[0014]

[Effect of device]

 Since the present invention is configured as described above, the trunnion shaft and the trunnion bracket are securely coupled, and the bolt does not loosen.

Since there is a spring, the dimensional accuracy in the length direction may be rough.

[Brief description of drawings]

FIG. 1 is a sectional view of a connecting portion between a trunnion shaft and a trunnion bracket showing an embodiment of the present invention.

FIG. 2 is a schematic diagram showing an example of a trunnion suspension device according to the related art.

FIG. 3 is a diagram showing a main part of FIG.

FIG. 4 is a side view showing a state of the trunnion suspension device on rough terrain.

[Explanation of symbols]

 1 ... Recessed part 2 ... Knock pin 3 ... Spring 4 ... Bolt 5 ... Frame 6 ... Trunnion bracket 7 ... Trunnion shaft 8 ... Spring seat 10 ... Spring seat 11, 12 ... Rear axle 13, 14, 15, 16 ... Torque rod 20 ... Knock bolt

Claims (1)

[Scope of utility model registration request] 1. A trunnion shaft is provided with a recess, a hole is provided at a position of the trunnion bracket that matches the recess, a knock pin that engages the recess and the hole is inserted, and a spring that presses the knock pin is inserted into the hole. The trunnion shaft mounting structure is characterized in that a bolt for screwing into the hole to close the hole is provided.