CN204572900U

CN204572900U - Wear-resisting type piston

Info

Publication number: CN204572900U
Application number: CN201520224946.6U
Authority: CN
Inventors: 谭登峰
Original assignee: Changzhou Feng Lan Car Accessories Co Ltd
Current assignee: Changzhou Feng Lan Car Accessories Co Ltd
Priority date: 2015-04-14
Filing date: 2015-04-14
Publication date: 2015-08-19
Anticipated expiration: 2025-04-14

Abstract

The utility model discloses a kind of wear-resisting type piston, comprise top, axis hole and shirt rim, described shirt rim is the flange of more than 3 being evenly arranged in axis hole outer wall, and each flange has shell fragment along same circumferential directions.The utility model have air spring use smooth and easy, can not abnormal sound be produced and the feature of long service life.

Description

Wear-resisting type piston

Technical field

The utility model relates to a kind of air spring parts, particularly relates to a kind of wear-resisting type piston.

Background technique

The wear-resisting type piston that the utility model is set forth, refer to the piston for being made up for raw material of acetal resin, phenolic resin etc., it has certain wear resistance and deformability.

The piston of existing air spring, it is all fabricated metals, when air spring uses, is all generally tilt to use, in stretching and retraction process, frictional ratio between piston and cavity is more severe, and the friction of this friction often on piston between certain point with cavity, can send the abnormal sound comparing shrillness, with the words that time point friction time is long, can cause piston rods bend, thus affect the damage of whole air spring, working life is short.

Summary of the invention

Main purpose of the present utility model is, overcomes the shortcoming that existing air spring abnormal sound is serious, working life is short, provides a kind of new wear-resisting type piston, thus is more suitable for reality, and have the value in industry.

The purpose of this utility model and solve its technical problem and realize by the following technical solutions.According to the wear-resisting type piston that the utility model proposes, comprise top, axis hole and shirt rim, described shirt rim is the flange of more than 3 being evenly arranged in axis hole outer wall, and each flange has shell fragment along same circumferential directions.

Concrete, the outermost end of described each flange is arc, and the center of circle of arc is concentric with the center of circle of axis hole.

Further, between shell fragment and flange, there is space.

Distance L between the outermost end of flange and the center of circle of axis hole is less than the distance D between the outermost end of shell fragment and the center of circle of axis hole.

Between described axis hole and flange, also there is guiding voussoir.

Described axis hole outer wall has 5 flanges.

By technique scheme, air spring piston of the present utility model at least has following advantages:

Compared with existing piston, wear-resisting type piston of the present utility model, in use due to the deformability of plastics, can ensure that multiple spot contacts with inboard wall of cylinder block all the time, abnormal sound can not be produced, and after Multi-contact, can also make piston rod and cavity on coaxial, magnification smoothly, extends the working life of whole air spring.

Above-mentioned explanation is only the general introduction of technical solutions of the utility model, in order to better understand technological means of the present utility model, and can be implemented according to the content of specification, be described in detail as follows below with preferred embodiment of the present utility model.

Accompanying drawing explanation

Fig. 1 is structural representation of the present utility model;

Fig. 2 schematic perspective view of the present utility model.

Embodiment

For further setting forth the utility model for the technological means reaching predetermined model utility object and take and effect, be described in detail as follows according to the wear-resisting type piston that the utility model proposes.

As shown in Figure 1, 2, a kind of wear-resisting type piston, comprises top 1, axis hole 2 and shirt rim 3, it is characterized in that, described shirt rim 3 is for being evenly arranged in the flange 4 of more than 3 of axis hole 2 outer wall, and each flange 4 has shell fragment 5 along same circumferential directions.

The outermost end of described each flange 4 is arc, and the center of circle of arc is concentric with the center of circle of axis hole 2.Under so more ensureing its using state, be no matter tilt or straight time, the arc of flange 4 outermost end contacts with cavity inner wall, guarantee use safety.

There is between shell fragment 5 and flange 4 space 6.Shell fragment 5 can be made to have the space of the direction pressurized of past axis hole 2, produce distortion during use, and remain and contact internal walls, satisfactory for result.

Distance L between the outermost end of flange 4 and the center of circle of axis hole 2 is less than the distance D between the outermost end of shell fragment 5 and the center of circle of axis hole 2.The utility model is with the outer example of axis hole 10mm, and its flange 4 outermost end is less than shell fragment 5 outermost end to the distance of center circle of axis hole 2 from L be 0.3mm to the distance of center circle of axis hole 2 from D, and along with the change of axis hole size, range difference between the two also can do relative adjustment.

Between described axis hole 2 and flange 4, also there is the voussoir 7 that leads.Not only can play leading role, can also soundness be increased, use more stable.

Described axis hole 2 outer wall has 5 flanges 4.The utility model can certainly adopt 4,6 even more flanges 4, reaches piston rod and to stretch firm smooth object.

The above, it is only preferred embodiment of the present utility model, not any pro forma restriction is done to the utility model, although the utility model discloses as above with preferred embodiment, but and be not used to limit the utility model, any those skilled in the art, do not departing within the scope of technical solutions of the utility model, make a little change when the technology contents of above-mentioned announcement can be utilized or be modified to the Equivalent embodiments of equivalent variations, in every case be the content not departing from technical solutions of the utility model, according to any simple modification that technical spirit of the present utility model is done above embodiment, equivalent variations and modification, all still belong in the scope of technical solutions of the utility model.

Claims

1. a wear-resisting type piston, comprise top (1), axis hole (2) and shirt rim (3), it is characterized in that, described shirt rim (3) is for being evenly arranged in the flange (4) of more than 3 of axis hole (2) outer wall, and each flange (4) has shell fragment (5) along same circumferential directions.

2. wear-resisting type piston according to claim 1, is characterized in that, the outermost end of described each flange (4) is arc, and the center of circle of arc is concentric with the center of circle of axis hole (2).

3. wear-resisting type piston according to claim 1, is characterized in that, has space (6) between shell fragment (5) and flange (4).

4. the wear-resisting type piston according to claim 1 or 3, it is characterized in that, the distance L between the outermost end of flange (4) and the center of circle of axis hole (2) is less than the distance D between the outermost end of shell fragment (5) and the center of circle of axis hole (2).

5. wear-resisting type piston according to claim 1, is characterized in that, also has guiding voussoir (7) between described axis hole (2) and flange (4).

6. wear-resisting type piston according to claim 1, is characterized in that, described axis hole (2) outer wall has 5 flanges (4).