CN219487100U - Distance rod assembly, automobile suspension and automobile - Google Patents

Abstract

The utility model relates to the technical field of automobile accessories, in particular to a thrust rod assembly, an automobile suspension and an automobile. The thrust rod assembly includes: a rod body and a ball pin; through holes are formed in the two ends of the rod body, and the ball pins are arranged in the through holes of the ball pins; the ball pin comprises a pin shaft, a rubber piece and a sheath, wherein the rubber piece vulcanizes the pin shaft and the sheath into a whole, the rubber piece is of an annular structure with a groove, the sheath is of an annular structure with an opening, the opening of the sheath is aligned with the groove of the rubber piece, and the sheath of the ball pin is in interference fit with the through hole of the rod body. The thrust rod assembly solves the problem that the clamping spring is separated when the rotation angle of the ball pin is larger. Moreover, the external dimensions at the two ends of the improved thrust rod assembly are smaller, the external design of the frame end and the suspension end thrust rod support is more convenient, and the risk of interference between the thrust rod assembly and the thrust rod support is reduced.

Description

Distance rod assembly, automobile suspension and automobile

Technical Field

The utility model relates to the technical field of automobile accessories, in particular to a thrust rod assembly, an automobile suspension and an automobile.

Background

The disclosure of this background section is only intended to increase the understanding of the general background of the utility model and is not necessarily to be construed as an admission or any form of suggestion that this information forms the prior art already known to those of ordinary skill in the art.

At present, a large and medium-sized passenger car adopting an air suspension is generally provided with a thrust rod assembly, wherein the thrust rod assembly is used as a guide device in the air suspension assembly, and two ends of the guide device are respectively connected with a frame and a suspension.

The prior ball pin structure is shown in fig. 1, and the thrust rod assembly structure is shown in fig. 2. The existing ball pin 33 is vulcanized with the existing pin shaft 13 by the retainer ring 11 and the existing rubber member 12, wherein the existing rubber member 12 is a key material for shock absorption and buffering, and the shock transmitted by the thrust rod is attenuated by proper rigidity and damping of vulcanized rubber. The existing thrust rod assembly consists of an existing rod body 31, an existing ball pin 33 and a clamp spring 32, wherein the existing ball pin 33 is pressed into the end part of the existing rod body 31 by special press-fit equipment and is locked by the clamp spring 32, so that the ball pin is prevented from falling off. However, when the structure is in a poor road condition, the rotation angle of the ball pin is large, so that the clamp spring is easy to separate, and the function failure of the thrust rod assembly is directly caused along with the continuous running of the vehicle.

Disclosure of Invention

Aiming at the defects in the prior art, the embodiment of the utility model aims to provide a thrust rod assembly so as to solve the problem that a snap spring is separated when the rotation angle of a ball pin is large.

In order to achieve the above object, the embodiment of the present utility model provides the following technical solutions:

a thrust rod assembly, comprising: a rod body and a ball pin; through holes are formed in the two ends of the rod body, and the ball pins are arranged in the through holes of the ball pins; the ball pin comprises a pin shaft, a rubber piece and a sheath, wherein the rubber piece vulcanizes the pin shaft and the sheath into a whole, the rubber piece is of an annular structure with a groove, the sheath is of an annular structure with an opening, the opening of the sheath is aligned with the groove of the rubber piece, and the sheath of the ball pin is in interference fit with the through hole of the rod body.

Preferably, the outer contour of the sheath of the ball pin is a cylinder without steps.

Preferably, the interference between the sheath of the ball pin and the through hole of the rod body is 2.4-3.1 mm.

Preferably, the diameter of the outer contour of the sheath of the ball pin is 64mm, and the diameter of the through hole of the rod body is 61mm.

Preferably, the two end surfaces of the sheath of the ball pin are flush with the two end surfaces of the through hole of the rod body.

Preferably, the thickness of the rubber member is 12mm.

Preferably, guide angles are arranged on two end faces of the outer contour of the sheath.

Preferably, the guide angle is 2mm in length and 30 °.

The embodiment of the utility model also provides an automobile suspension, which comprises the thrust rod assembly.

The embodiment of the utility model also provides an automobile, comprising the automobile suspension.

One or more technical solutions provided in the embodiments of the present utility model at least have the following technical effects or advantages:

according to the utility model, the annular structure of the rubber part is provided with the groove, the corresponding annular structure of the sheath is provided with the opening, and when the thrust rod assembly is prepared, the diameters of the sheath and the rubber part are compressed, and the ball pin is pressed into the through hole at the end part of the rod body, so that the sheath of the ball pin is in interference fit with the through hole of the rod body. The structure does not need to limit the clamp spring, so that the problem that the clamp spring is separated is avoided, and the reliability of the suspension assembly and the whole vehicle operation is ensured. Meanwhile, the end part of the rod body is a step-free mounting hole, and the mounting hole is simpler to process. In addition, the diameter range of the external dimensions of the two ends of the improved thrust rod assembly can be reduced by 24mm, the external design of the frame end and the suspension end thrust rod support is more convenient, and the risk of interference between the thrust rod assembly and the thrust rod support is reduced.

Additional aspects of the utility model will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.

In order to make the above objects, features and advantages of the present utility model more comprehensible, preferred embodiments accompanied with figures are described in detail below.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model.

FIG. 1 is a schematic view of a prior art ball pin;

FIG. 2 is a schematic illustration of a prior art thrust rod assembly;

FIG. 3 is a cross-sectional view of a ball stud provided in an embodiment of the present utility model;

FIG. 4 is a top view of a ball stud provided in an embodiment of the present utility model;

FIG. 5 is a schematic view of a thrust rod assembly according to an embodiment of the present utility model;

in the figure: 11. a retainer ring; 12. an existing rubber member; 13. the existing pin shaft; 21. a sheath; 22. a rubber member; 23. a pin shaft; 24. a groove; 25. an opening; 31. an existing rod body; 32. clamping springs; 33. an existing ball pin; 41. a rod body; 42. ball pins;

the mutual spacing or dimensions are exaggerated for the purpose of showing the positions of the various parts, and the schematic illustrations are used for illustration only.

Detailed Description

It should be noted that the following detailed description is illustrative and is intended to provide further explanation of the utility model. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present utility model. As used herein, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the utility model clearly indicates otherwise, and it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.

For convenience of description, the words "upper" and "lower" in the present utility model denote only the correspondence with the upper and lower directions of the drawing itself, and do not limit the structure, only for convenience of description and simplification of description, and do not indicate or imply that the apparatus or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Term interpretation section: the terms "mounted," "connected," "secured," and the like in the present utility model are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; the terms "mechanically coupled" and "directly coupled" may be used interchangeably to refer to either a mechanical coupling, an indirect coupling via an intermediary, an internal coupling of two elements, or an interaction of two elements, as would be understood by one of ordinary skill in the art, and the terms are to be understood in the specific sense of the present utility model as appropriate.

As shown in fig. 3-5, in one embodiment of the present utility model, a thrust rod assembly is provided, including: a rod body 41 and a ball pin 42; through holes are formed in two ends of the rod body 41, and the ball pin 42 is installed in the through holes of the ball pin 42; the ball pin 42 comprises a pin shaft 23, a rubber member 22 and a sheath 21, the rubber member 22 vulcanizes the pin shaft 23 and the sheath 21 into a whole, the rubber member 22 is of an annular structure with a groove 24, the sheath 21 is of an annular structure with an opening 25, the opening 25 of the sheath 21 is aligned with the groove 24 of the rubber member 22, and the sheath 21 of the ball pin 42 is in interference fit with the through hole of the rod body 41. As shown in fig. 3 and 4, the outer contour of the sheath 21 of the ball pin 42 is a cylinder without steps. The two end surfaces of the sheath 21 of the ball pin 42 are flush with the two end surfaces of the through hole of the rod body 41.

The sheath 21 can be a steel sleeve, and the outer steel sleeve and the middle pin shaft 23 are vulcanized into a whole through rubber to form the ball pin 42 assembly with the novel composite bushing structure. The two ends of the rod body 41 are cylindrical through holes, the annular structure of the rubber piece 22 is provided with a groove 24, the annular structure of the corresponding sheath 21 is provided with an opening 25, and when the thrust rod assembly is prepared, the diameters of the sheath 21 and the rubber piece 22 are compressed, the ball pin 42 is pressed into the through holes at the end part of the rod body 41 until the two ends are flush, so that the sheath 21 of the ball pin 42 and the through holes of the rod body 41 are in interference fit. The structure does not need to limit by using the clamp spring 32, so that the problem that the clamp spring 32 is separated is avoided, and the reliability of the suspension assembly and the whole vehicle operation is ensured. Meanwhile, the end part of the rod body 41 is provided with a step-free mounting hole, and the mounting hole is simpler to process. In addition, the diameter range of the external dimensions of the two ends of the improved thrust rod assembly can be reduced by 24mm, the external design of the frame end and the suspension end thrust rod support is more convenient, and the risk of interference between the thrust rod assembly and the thrust rod support is reduced.

The interference between the sheath 21 of the ball pin 42 and the through hole of the rod body 41 is 2.4-3.1 mm, which ensures that the ball pin 42 can be smoothly pressed into the rod body 41 and ensures the stable fit of the two. Specifically, the diameter of the outer contour of the sheath 21 of the ball pin 42 is 64 (-0.5-0) mm, and the diameter of the through hole of the rod body 41 is 61+ -0.1 mm.

The thickness of the rubber member 22 of the ball pin 42 of the present utility model (here, the thickness refers to half of the difference between the outer diameter and the inner diameter of the rubber, i.e., the thickness of the rubber layer) can be up to 12mm, which is 4mm greater than the thickness before improvement, so that the ball pin can withstand a larger rotation angle generated during the limit runout of the suspension, and the fatigue resistance of the rubber layer is higher.

As shown in fig. 3, both end surfaces of the outer contour of the sheath 21 are provided with guide angles, and the ball pin 42 is conveniently pressed into the through hole of the rod body 41 by the guide angles. Specifically, the lead angle is 2mm×30°. The matching reliability of the ball pin 42 and the rod body 41 of the composite bushing structure is ensured by controlling the pressing force to be larger than the minimum technical requirement during assembly.

The thrust rod assembly has interchangeability, only the thrust rod assembly before improvement is removed, the improved composite bushing type thrust rod assembly is directly installed, then the thrust rod assembly is firmly fastened by using fasteners such as bolts, the installation interfaces are completely consistent, and the rest thrust rod assembly does not need to be changed any more.

Based on the thrust rod assembly, the embodiment of the utility model further provides an automobile suspension and an automobile. Since the thrust rod assembly has the above technical effects, the technical effects of the automobile suspension and the automobile using the thrust rod assembly are referred to the above embodiments.

While the foregoing description of the embodiments of the present utility model has been presented in conjunction with the drawings, it should be understood that it is not intended to limit the scope of the utility model, but rather, it is intended to cover all modifications or variations within the scope of the utility model as defined by the claims of the present utility model.

Claims (10)

1. A thrust rod assembly, comprising: a rod body and a ball pin;

through holes are formed in the two ends of the rod body, and the ball pins are arranged in the through holes of the ball pins;

the ball pin comprises a pin shaft, a rubber piece and a sheath, wherein the rubber piece vulcanizes the pin shaft and the sheath into a whole, the rubber piece is of an annular structure with a groove, the sheath is of an annular structure with an opening, the opening of the sheath is aligned with the groove of the rubber piece, and the sheath of the ball pin is in interference fit with the through hole of the rod body.

2. The thrust rod assembly of claim 1, wherein the outer profile of the sheath of the ball pin is a stepped cylinder.

3. The thrust rod assembly of claim 2, wherein the sleeve of the ball pin and the through hole of the rod body have an interference of 2.4-3.1 mm.

4. A thrust rod assembly as claimed in claim 3, wherein the sheath profile diameter of the ball pin is 64mm and the bore diameter of the rod body is 61mm.

5. The thrust rod assembly of claim 1, wherein the two end surfaces of the sheath of the ball pin are flush with the two end surfaces of the through hole of the rod body.

6. The thrust rod assembly of claim 1, wherein said rubber member has a thickness of 12mm.

7. The thrust rod assembly of claim 1, wherein the two end faces of the sheath outer profile are provided with lead angles.

8. The thrust rod assembly of claim 7, wherein said lead angle is 2mm in length and 30 °.

9. An automotive suspension comprising a thrust rod assembly as claimed in any one of claims 1 to 8.

10. An automobile comprising the automobile suspension according to claim 9.