CN210652577U

CN210652577U - Rubber bushing for air suspension guide arm

Info

Publication number: CN210652577U
Application number: CN201921430592.5U
Authority: CN
Inventors: 金鑫; 范培斌; 王江伟; 黄志刚; 刘伟; 彭显威; 辛梓田
Original assignee: Dongfeng Commercial Vehicle Co Ltd
Current assignee: Dongfeng Commercial Vehicle Co Ltd
Priority date: 2019-08-30
Filing date: 2019-08-30
Publication date: 2020-06-02
Anticipated expiration: 2029-08-30

Abstract

The utility model discloses a rubber bush for air suspension leading arm sets up in the eye of rolling up of leading arm, including the round pin axle, the epaxial inner circle steel bushing that has cup jointed of round pin, cup jointed the outer lane steel bushing on the inner circle steel bushing, be equipped with the inner packing ring between round pin axle and the inner circle steel bushing, be equipped with the outer packing ring between inner circle steel bushing and the outer lane steel bushing, inner circle steel bushing, outer lane steel bushing, inner packing ring, outer packing ring are non-closed loop structure. The utility model has the advantages that: the utility model discloses a spring eye aperture of the relative guide arm of external diameter of outer lane steel bushing can increase, can guarantee sufficient tensile force through great interference fit between its and the spring eye of guide arm to under the surface need not the rubber coated condition, avoid it to break away from the spring eye. Meanwhile, the utilization rate of raw materials can be improved, and the cost is reduced. The middle surface of the pin shaft is of an arc structure, so that the vulcanization length of the inner gasket and the contact area of the inner gasket and the pin shaft can be increased, and the use reliability is improved.

Description

Rubber bushing for air suspension guide arm

Technical Field

The utility model relates to a commercial car frame construction technical field specifically indicates a rubber bush for air suspension leading arm.

Background

In the existing guide arm rubber bushing, an inner ring steel bushing and an outer ring steel bushing are both of closed-loop closed structures, so that the use amount of materials is increased, and the interference magnitude between the outer ring steel bushing of the rubber bushing and a guide arm lug rolling hole is limited, namely the interference magnitude between the two cannot be too large, so that the tension force of the rubber bushing is limited; however, in the actual use process, in order to avoid the phenomenon that the rubber bushing is separated from the guide arm lug rolling hole due to the fact that the tension of the rubber bushing is too small, when the rubber bushing and the guide arm are assembled, the surface of the outer ring steel sleeve needs to be coated with the adhesive, so that the rubber bushing and the guide arm lug rolling hole generate large adhesive force, the defect of insufficient tension between the rubber bushing and the guide arm lug rolling hole is made up, and the adhesive can gradually fall in the adhesive bonding process along with the time.

Disclosure of Invention

The utility model aims at solving the above problem, providing a rubber bush for air suspension guide arm, it has solved the tensile force that current air suspension guide arm rubber bush exists not enough, the assembly convenience is poor, the low problem that leads to with high costs, the reliability remains to be improved of raw and other materials utilization ratio.

In order to realize the above-mentioned purpose, the utility model relates to a rubber bush for air suspension leading arm sets up in the eye of a book of leading arm, including the round pin axle, the epaxial inner circle steel bushing that has cup jointed of round pin, the outer lane steel bushing that has cup jointed on the inner circle steel bushing, be equipped with the inner packing ring between round pin axle and the inner circle steel bushing, be equipped with the outer packing ring between inner circle steel bushing and the outer lane steel bushing, inner circle steel bushing, outer lane steel bushing, inner packing ring, outer packing ring are non-closed ring structure. The structure can ensure enough tension through large interference fit between the structure and the guide arm lug rolling hole, so that the structure is prevented from being separated from the lug rolling hole under the condition that the surface is not coated with glue. Meanwhile, the structure can not improve the utilization rate of raw materials and reduce the cost.

Furthermore, the pin shaft is an irregular cylinder, and the radius of the middle part of the pin shaft is larger than that of the end part of the pin shaft. Like this, the contact area of multiplicable inner packing ring vulcanization length and with the round pin axle promotes the use reliability.

Furthermore, the two axial ends of the inner gasket are provided with inner sealing ports with U-shaped sections. The structure can ensure that the pin shaft and the inner ring steel sleeve have large interference fit to ensure that the pin shaft and the inner ring steel sleeve have enough tension.

Furthermore, outer sealing ports with U-shaped sections are arranged at two axial ends of the outer gasket. The structure can ensure that the inner ring steel bushing and the outer ring steel bushing have large interference fit to ensure that the inner ring steel bushing and the outer ring steel bushing have enough tension.

Preferably, the two ends of the pin shaft are also provided with radial through holes.

The utility model has the advantages that:

the utility model discloses an inner circle steel bushing, outer lane steel bushing, inner washer, outer packing ring all adopt ring-opening non-enclosed structure, and the ear-rolling aperture of the relative guide arm of external diameter of outer lane steel bushing can increase, can guarantee sufficient tensile force through great interference fit between the ear-rolling hole of its and guide arm to under the surface need not the rubber coated condition, avoid it to break away from the ear-rolling hole. Meanwhile, the open-loop structure can not only improve the assembly convenience of the guide arm, but also improve the utilization rate of raw materials and reduce the cost. The middle surface of the pin shaft is of an arc structure, so that the vulcanization length of the inner gasket and the contact area of the inner gasket and the pin shaft can be increased, and the use reliability is improved.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the radial configuration of FIG. 1;

FIG. 3 is a schematic axial view of the structure of FIG. 1;

FIG. 4 is a schematic view of the internal structure of FIG. 2;

FIG. 5 is a schematic view of the internal structure of FIG. 2 from another perspective;

FIG. 6 is a schematic view of the usage state of the present invention;

in the figure: the device comprises a pin shaft 1, an inner ring steel sleeve 2, an outer ring steel sleeve 3, an inner gasket 4 (wherein, the inner sealing opening is 4.1), an outer gasket 5 (wherein, the outer sealing opening is 5.1), a through hole 6 and a guide arm 7.

Detailed Description

The invention will be described in further detail with reference to the following figures and specific embodiments:

the rubber bushing for the air suspension guide arm is arranged in a lug rolling hole of a guide arm 7 and comprises a pin shaft 1, an inner ring steel sleeve 2 is sleeved on the pin shaft 1, an outer ring steel sleeve 3 is sleeved on the inner ring steel sleeve 2, an inner gasket 4 is arranged between the pin shaft 1 and the inner ring steel sleeve 2, an outer gasket 5 is arranged between the inner ring steel sleeve 2 and the outer ring steel sleeve 3, and the inner ring steel sleeve 2, the outer ring steel sleeve 3, the inner gasket 4 and the outer gasket 5 are all non-closed ring structures. The pin shaft 1 is an irregular cylinder, and the radius of the middle part of the pin shaft 1 is larger than that of the end part of the pin shaft 1. And inner sealing ports 4.1 with U-shaped sections are arranged at two axial ends of the inner gasket 4. And outer sealing ports 5.1 with U-shaped sections are arranged at two axial ends of the outer gasket 5. And radial through holes 6 are also formed at two ends of the pin shaft 1.

The utility model discloses when in actual use:

inner washer 4, outer washer 5 are vulcanized rubber, and inner circle steel bushing 2, outer lane steel bushing 3, inner washer 4, outer washer 5 all adopt open-loop non-closed structure, and the relative earring aperture of leading arm 7 of the external diameter of outer lane steel bushing 3 can increase, can guarantee sufficient tensile force through great interference fit between its and the earring hole of leading arm 7 to under the condition that the surface need not the rubber coating, avoid it to break away from the earring hole. Meanwhile, the open-loop structure can not only improve the assembly convenience of the guide arm 7, but also improve the utilization rate of raw materials and reduce the cost. The middle surface of the pin shaft 1 is of an arc structure, so that the vulcanization length of the inner gasket 4 and the contact area of the inner gasket and the pin shaft 1 can be increased, and the use reliability is improved.

Finally, it should be noted that the above embodiments are merely representative examples of the present invention. Obviously, the present invention is not limited to the above-described embodiments, and many modifications are possible. Any simple modification, equivalent change and modification made to the above embodiments according to the technical spirit of the present invention should be considered as belonging to the protection scope of the present invention.

Claims

1. A rubber bushing for an air suspension guide arm is arranged in a lug rolling hole of a guide arm (7), and is characterized in that: the novel hinge pin is characterized by comprising a hinge pin (1), wherein an inner ring steel bushing (2) is sleeved on the hinge pin (1), an outer ring steel bushing (3) is sleeved on the inner ring steel bushing (2), an inner gasket (4) is arranged between the hinge pin (1) and the inner ring steel bushing (2), an outer gasket (5) is arranged between the inner ring steel bushing (2) and the outer ring steel bushing (3), and the inner ring steel bushing (2), the outer ring steel bushing (3), the inner gasket (4) and the outer gasket (5) are all non-closed ring structures.

2. The rubber bushing for an air suspension guide arm according to claim 1, wherein: the pin shaft (1) is an irregular cylinder, and the radius of the middle part of the pin shaft (1) is larger than that of the end part of the pin shaft (1).

3. The rubber bushing for an air suspension guide arm according to claim 2, wherein: and inner sealing ports (4.1) with U-shaped sections are arranged at two axial ends of the inner gasket (4).

4. A rubber bushing for an air suspension knuckle according to any one of claims 1 to 3, wherein: and outer sealing ports (5.1) with U-shaped sections are arranged at two axial ends of the outer gasket (5).

5. The rubber bushing for an air suspension guide arm according to claim 4, wherein: and radial through holes (6) are also formed at the two ends of the pin shaft (1).