CN202264761U - Roll-rivet riveting structure for front and rear shells of vacuum booster - Google Patents
Roll-rivet riveting structure for front and rear shells of vacuum booster Download PDFInfo
- Publication number
- CN202264761U CN202264761U CN2011204246089U CN201120424608U CN202264761U CN 202264761 U CN202264761 U CN 202264761U CN 2011204246089 U CN2011204246089 U CN 2011204246089U CN 201120424608 U CN201120424608 U CN 201120424608U CN 202264761 U CN202264761 U CN 202264761U
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- China
- Prior art keywords
- roll
- vacuum booster
- rear shells
- diaphragm
- rear housing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- Braking Systems And Boosters (AREA)
Abstract
The utility model relates to a roll-rivet riveting structure for the front and rear shells of a vacuum booster, belonging to the field of automobile brake. The roll-rivet riveting structure for the front and rear shells of a vacuum booster disclosed by the utility model has the advantages of being novel and simple in structure, high in the riveting strength of the front and rear shells, large in the clamping force of a diaphragm and obvious in sealing effect; and the front shell has no rusting phenomenon, so that the reliability of the booster is enhanced.
Description
Technical field
The utility model belongs to the automobile brake field, refers in particular to automobile vacuum booster.
Background technology
Vacuum booster is the brake power assist unit in light, the car brake system, is the critical component in the brake system of car.Its principle of work is the vacuum that is produced when utilizing engine petrol work; Or the vacuum that vacuum pump produced that diesel motor installed additional; When chaufeur steps on brake pedal; Borrow the different thrust that difference of pressure produced of two epitrochoidal chambers in the vacuum booster; Amplify brake pedal force by design proportion and promote brake master cylinder piston, the braking liquid in the compression brake master cylinder produces hydraulic pressure, and is delivered to the wheel drg and makes brake shoe brake cheek contact and then produce the deceleration of friction drag control vehicle with wheel nave or brake.The main function of forward and backward housing of servo-unit is connection, clamping diaphragm, transmission power.
Present conventional vacuum booster; Forward and backward housing is riveted together through rabbet or preparatory rabbet, and the method for rabbet riveted joint is, on servo-unit assembly fitting line; After the assembling of parts such as current, rear housing, diaphragm, through tearing and form convexity with stamping knife in the rear housing outer rim.Utilize bulge-structure to tangle front case.The mode of rabbet is first with the preparatory rabbet of rear housing outer rim in advance, when the servo-unit assembly assembles, towards riveting, tangles front case through rear housing towards the riveting deflection at the preparatory rabbet of rear housing place.Make forward and backward housing form an integral body.Glancing impact transmits the function of braking force.Because diaphragm should receive the effect of servo vacuum power in the course of the work, participation work distortion again.So diaphragm needs enough gripping powers in riveted joint place of forward and backward housing.Diaphragm and rear housing, front case rabbet are riveted together and seal, and the shortcoming of this kind servo-unit is: the rabbet place is perishable, and riveted joint place intensity is low, and diaphragm is prone to deviate from the past, the rear housing.Produce phenomena of the failure such as leakage.
Summary of the invention
The utility model provides a kind of front and back housing roll riveting riveted structure of vacuum booster, and perishable to solve common rib power device rabbet place, riveted joint place intensity is low, and diaphragm is prone to deviate from the past, the rear housing, produces the problem of leaking.
The technical scheme of the utility model is: rear housing and front case roll riveting riveted joint, diaphragm and rear housing, front case interference fit.
The advantage of the utility model is: novel structure is simple, and forward and backward housing riveting intensity is high, and the Clamping force of diaphragm is big, and sealing effectiveness is obvious, and front case does not have the phenomenon of getting rusty, and has improved the reliability of servo-unit.
Description of drawings
Fig. 1 is the structural representation of the utility model;
Fig. 2 is the running condition figure of the utility model.
The specific embodiment
Rear housing 1 and front case 3 roll rivetings riveted joint, diaphragm 2 and rear housing 1, front case 3 interference fit.
Front case is connected with car load, rear housing is connected with master brake cylinder; Utilize front case to do support,, hang on the front case through rear housing roll riveting distortion the roll riveting of rear housing edge; Thereby make former and later two housings connect into an integral body; Enough intensity is provided, and former and later two housings and clamping diaphragm form two epitrochoidal chambers of servo-unit, and the treadle effort that chaufeur applies passes to master cylinder through housing.
Claims (1)
1. the front and back housing roll riveting riveted structure of a vacuum booster is characterized in that: rear housing and front case roll riveting riveted joint, diaphragm and rear housing, front case interference fit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204246089U CN202264761U (en) | 2011-11-01 | 2011-11-01 | Roll-rivet riveting structure for front and rear shells of vacuum booster |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204246089U CN202264761U (en) | 2011-11-01 | 2011-11-01 | Roll-rivet riveting structure for front and rear shells of vacuum booster |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202264761U true CN202264761U (en) | 2012-06-06 |
Family
ID=46155570
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204246089U Expired - Lifetime CN202264761U (en) | 2011-11-01 | 2011-11-01 | Roll-rivet riveting structure for front and rear shells of vacuum booster |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202264761U (en) |
-
2011
- 2011-11-01 CN CN2011204246089U patent/CN202264761U/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120606 |