CN202707893U

CN202707893U - Air spring

Info

Publication number: CN202707893U
Application number: CN 201220251084
Authority: CN
Inventors: 郭焰; 张晓锋
Original assignee: AIRLOP (BEIJING) AUTOMOBILE TECHNOLOGY CO LTD
Current assignee: AIRLOP (BEIJING) AUTOMOBILE TECHNOLOGY CO LTD
Priority date: 2012-05-30
Filing date: 2012-05-30
Publication date: 2013-01-30
Anticipated expiration: 2022-05-30

Abstract

The utility model discloses an air spring comprising an internal component and an external component used for fixing with a vehicle body. A bearing is arranged at a rotary joint of the internal component and the external component. The external component is fixed with an outer ring of the bearing, and the internal component is fixed with an inner ring of the bearing. The air spring solves the problem about separation from the vehicle body when an upper end cap of the air spring is stressed by side bending force, and damage to a damper is reduced. The air spring is simple, practical, reasonable in structure, good in durability and high in stability.

Description

A kind of pneumatic spring

Technical field

The utility model relates to auto parts and components, refers to especially a kind of pneumatic spring.

Background technique

At present, generally use air suspension abroad on senior motor bus, heavy duty truck, the application quantity of air suspension on light-duty vehicle is also in rapid rising, and the part car also begins used for installing air suspension gradually.Some special vehicles (as to shockproof measuring truck of having relatively high expectations, ambulance, extraordinary military vehicle and require the container carrier etc. of highly adjusting) on, air suspension is almost unique selection.

Airsuspension system is the critical component of high-grade commercial car, it is the Updated product of automobile leaf spring suspension system, now become one of critical piece of automotive performance lifting, characteristic with unique change rigidity, low vibration frequency, the concavo-convex impact of anti-road, more effectively improve vehicle ride comfort, run smoothness and control stability, also had simultaneously multinomial performances such as can reducing automotive dead weight, raising motion speed, minimizing pavement destruction.Because above various advantages, the research of airsuspension system and development just more and more are subject to people's attention.

Pneumatic spring and vibration damper generally are eccentric the installations, in order to reduce and the interference of car body and the lateral force of minimizing damper stem.At this moment, when vibration damper with wheel hop or when turning to, the pneumatic spring upper end cap will be subject to lateral bending power, and separates with vehicle body, impacts and vibration damper is destroyed.

The model utility content

In view of this, the purpose of this utility model is to propose a kind of pneumatic spring, is used for solving the problem that the pneumatic spring upper end cap separates with vehicle body.

The pneumatic spring that provides based on above-mentioned purpose the utility model comprises internal component and is used for the external module fixing with vehicle body; Externally the rotation binding site of assembly and internal component is provided with bearing, and the outer ring of described external module and bearing is fixed, and the inner ring of described internal component and bearing is fixed.

Alternatively, be provided with the first pressing plate and press table on the described external module, between the first pressing plate and press table, form groove, just can hold the outer ring of described bearing;

Be provided with the second pressing plate and spring bumper cover on the described internal component, between the second pressing plate and spring bumper cover, form groove, just can hold the inner ring of described bearing.

Preferably, described bearing is deep groove ball bearing or angular contact ball bearing.

Alternatively, described internal component is connected with the inner ring of bearing by the mode of spinning or flange punching press.

Alternatively, described external module is connected with the outer ring of bearing by the mode of spinning or flange punching press.

Can find out from above, the pneumatic spring that the utility model provides has solved when the pneumatic spring upper end cap is subject to lateral bending power, and the problem that can separate with vehicle body has reduced the destruction to vibration damper; And the pneumatic spring that the utility model provides is simple and practical, and is rational in infrastructure, good endurance, and stability is high.

Description of drawings

Fig. 1 is the partial structurtes schematic diagram of the pivotable parts in the utility model embodiment pneumatic spring;

Fig. 2 is the sectional view of the utility model embodiment air suspension.

Embodiment

For making the purpose of this utility model, technological scheme and advantage clearer, below in conjunction with specific embodiment, and with reference to accompanying drawing, the utility model is further described.

A kind of pneumatic spring that the utility model provides comprises internal component and is used for the external module fixing with vehicle body; Externally the rotation binding site of assembly and internal component is provided with bearing, and the outer ring of described external module and bearing is fixed, and the inner ring of described internal component and bearing is fixed.

The pneumatic spring that the utility model is provided is installed on the pallet of vibration damper, makes air suspension, and described air suspension is connected with vehicle body.

With reference to figure 1, be the partial structurtes schematic diagram of the pivotable parts in the utility model embodiment pneumatic spring.

The external module that the pneumatic spring 1 that the utility model provides comprises internal component and is used for fixing with vehicle body, external module can rotate each other relatively with internal component.Externally the rotation binding site of assembly and internal component is provided with bearing, and the outer ring 402 of described external module and bearing is fixing, and the inner ring 401 of described internal component and bearing is fixing.

Be provided with the first pressing plate 101 and press table 102 at described external module, the first pressing plate 101 is fixing with press table 102, press table 102 inward flanges are the step cutting pattern shape, so that with the first pressing plate 101 in conjunction with the time, between the two, form the groove of annular, the outer ring 402 that just can hold described bearing.

Be provided with the second pressing plate 201 and spring bumper cover 202, the second pressing plates 201 and spring bumper cover 202 on the described internal component fixing.Described spring bumper cover 202 inward flanges are the step cutting pattern shape so that with the second pressing plate 201 in conjunction with the time, form groove between the two, just can hold the inner ring 401 of described bearing.

Therefore, in the time of on being installed in car body, along with vibration damper cylinder barrel 3 rotates, and described bearing outer ring 402 is fixing with vehicle body, not only plays the effect of supporting vehicle body but also can the phase mutual interference not fix with the pneumatic spring internal component for the inner ring 401 of described bearing.

Alternatively, described bearing is deep groove ball bearing or angular contact ball bearing.

Alternatively, described internal component is connected with the inner ring 401 of bearing by the mode of spinning or flange punching press.

Alternatively, described external module is connected with the outer ring 402 of bearing by the mode of spinning or flange punching press.

With reference to figure 2, be the sectional view of the utility model embodiment air suspension.

Air suspension comprises pneumatic spring 1, damper stem 2 and vibration damper cylinder barrel 3, and described pneumatic spring 1 is installed on the spring tray 5 of vibration damper 2.

Those of ordinary skill in the field are to be understood that: the above only is specific embodiment of the utility model; be not limited to the utility model; all within spirit of the present utility model and principle; any modification of making, be equal to replacement, improvement etc., all should be included within the protection domain of the present utility model.

Claims

1. a pneumatic spring is characterized in that, described pneumatic spring comprises internal component and is used for the external module fixing with vehicle body; Externally the rotation binding site of assembly and internal component is provided with bearing, and the outer ring of described external module and bearing is fixed, and the inner ring of described internal component and bearing is fixed.

2. pneumatic spring according to claim 1 is characterized in that, is provided with the first pressing plate and press table on the described external module, forms groove between the first pressing plate and press table, just can hold the outer ring of described bearing;

3. pneumatic spring according to claim 2 is characterized in that, described bearing is deep groove ball bearing or angular contact ball bearing.

4. pneumatic spring according to claim 1 is characterized in that, described internal component is connected with the inner ring of bearing by the mode of spinning or flange punching press.

5. pneumatic spring according to claim 1 is characterized in that, described external module is connected with the outer ring of bearing by the mode of spinning or flange punching press.