CN202883845U - Sealing structure of piston-type spring braking chamber - Google Patents
Sealing structure of piston-type spring braking chamber Download PDFInfo
- Publication number
- CN202883845U CN202883845U CN 201220565389 CN201220565389U CN202883845U CN 202883845 U CN202883845 U CN 202883845U CN 201220565389 CN201220565389 CN 201220565389 CN 201220565389 U CN201220565389 U CN 201220565389U CN 202883845 U CN202883845 U CN 202883845U
- Authority
- CN
- China
- Prior art keywords
- piston
- lip
- sealing
- seal
- type
- 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 - Fee Related
Links
Images
Landscapes
- Sealing Devices (AREA)
- Sealing With Elastic Sealing Lips (AREA)
Abstract
The utility model discloses a sealing structure of a piston-type spring braking chamber. The defects that in an existing piston-type spring braking chamber of a car, the sealing and dustproof effects are poor, the machining and assembling of a plurality of independent sealing rings are trouble, and cost is high are overcome. An integrative composite sealing ring is provided to overcome the defects in the prior art. The sealing structure of the piston-type spring braking chamber comprises a cylinder body and a middle body, wherein the cylinder body and the middle body form a spring cavity. A spring and a spring base are arranged in the spring cavity, the spring base ejects a piston, and the piston is matched with the middle of the middle body in a movable mode. A stair-shaped wide seal groove is formed in the matched position between the piston and the middle body, a protruded shoulder is arranged in the middle of the seal groove and protrudes inward, a sealing ring is embedded in the seal groove and matched with the seal groove, and the sealing ring is a composite sealing ring which is formed by integrative connection of a lip-shaped sealing structure at the front end, a lip-shaped sealing structure at the rear end and a stair-shaped structure at the middle section. The sealing structure of the piston-type spring braking chamber has the advantages of having complementary advantages of various kinds of sealing devices, simplifying structure and technology, being convenient to machine and assemble, improving efficiency and reducing cost.
Description
Technical field
The utility model belongs to the brake device for car technical field, is specifically related to a kind of sealing configuration of piston-type spring braking chamber.
Background technique
The automobile of prior art is used the piston-type spring braking device usually, this braking device comprises spring chamber and driving chamber, each the self-enclosed mutual isolation of two chambeies, be provided with spring and spring seat in the spring chamber, spring seat heads on piston, piston cooperates with the intermediate portion of middle body is movable, and the cooperation place of piston and middle body is provided with sealing configuration; The sealing configuration of prior art is to establish an O shape circle in the cooperation place, and prior art preferably technological scheme is respectively to establish an O shape circle in front-end and back-end, and the best technological scheme of prior art is that a seal ring is respectively established at front end, rear end and the position, stage casing in the cooperation place; Obviously, for single seal ring, for example single O shape is enclosed its sealing and dust-proof effect is all relatively poor, even the seal ring of lip structure, not where the sealing effect of single seal ring more can't take into account two; Sealing effect and the dust-proof effect of a plurality of O shape circles are also not ideal enough, and a plurality of independently seal ring also exists complex structure, processing and assembling trouble, high in cost of production is not enough.
For example China Patent No. ZL 201110325079.1, and name is called the patent of invention of " double-piston energy storage spring air brake chamber and single chamber piston type brake air chamber ", discloses a kind of double-piston energy storage spring air brake chamber and single chamber piston type brake air chamber.Double-piston energy storage spring air brake chamber comprises for the upper gas chamber of service brake and is used for the lower chamber of stopping brake, upper gas chamber comprises upper cylinder body, push rod and return spring, in upper cylinder body, arrange along the upper piston of upper cylinder body slippage, upper piston is divided into service brake turnover gas chamber and braking chamber with upper gas chamber, push rod passes upper cylinder body and is connected with upper piston in that brake chamber is indoor, and return spring is arranged on the indoor promotion upper piston of brake chamber return.Single chamber piston type brake air chamber comprises the piston that arranges in the cylinder body, and push rod passes cylinder body and is connected with piston in that brake chamber is indoor, and return spring is arranged on the indoor pushing piston return of brake chamber.This automobile brake chamber adopts the sealing configuration of respectively establishing an O shape circle in front-end and back-end in the cooperation place of piston and cylinder body, obviously exists as foregoing defective.
Summary of the invention
The utility model technical issues that need to address are, the sealing configuration that overcomes the piston of automobile formula spring brake chamber of prior art exists sealing effect and dust-proof effect not ideal enough, a plurality of independently seal rings exist complex structure, processing and assembling trouble, defective that cost is high, it all is that lip seal configuration, stage casing are the integral type composite sealing ring of ladder-type structure that a kind of front end and back end is provided, to overcome the defective of prior art.
The purpose of this utility model is achieved by following technical proposals:
OnePlant the sealing configuration of piston-type spring braking chamber, comprise the cylinder body and the middle body that consist of spring chamber, be provided with spring and spring seat in the spring chamber, spring seat heads on piston, piston cooperates with the intermediate portion of middle body is movable, be provided with the wide seal groove of stepped shaft at piston with the cooperation place of middle body, the intermediate portion of the wide seal groove of stepped shaft is provided with inwardly outstanding convex shoulder, be embedded with the seal ring suitable with it in the wide seal groove of stepped shaft, described seal ring is the composite sealing ring that the ladder-type structure by the lip seal configuration of the lip seal configuration of front end and rear end and stage casing is connected as a single entity and consists of.
Lip-type packing refers to seal the O-ring seal that the position has various lip seal sections, usually also is called sealing cup, and this class seal ring is used for reciprocating seal arrangement, and its performance is better than O-ring seals.
Polytype seal arrangement is made as continuous integral structure, can reduces cost, main is that dissimilar seal arrangements can be had complementary advantages, simplified structure and simplification technique, and convenient processing and assembling are raised the efficiency; Be connected as a single entity by triple seal, increased the longitudinal degree of sealing.
As preferably, the lip seal configuration of seal ring rear end is the lip-type packing of boot-shaped class.The lip-type packing of boot-shaped class is conducive to take into account dust reduction capability most, and lip structure one end of boot-shaped is coated on the piston periphery, and the other end covers on the end face of cylinder body, and dust-proof effect is especially good.
As preferably, the lip seal configuration of seal ring rear end is the lip-type packing of J type class.
As preferably, the lip seal configuration of seal ring front end is the lip-type packing of Y shape class.
As preferably, the lip seal configuration of seal ring front end is the lip-type packing of V-arrangement class.
As preferably, the convex shoulder that the intermediate portion of the wide seal groove of ladder is provided with is rectangle or trapezium structure.Rectangle or the suffered axial pressure of trapezium structure balanced seal circle.
As preferably, the inner side surface of seal ring is cylindrical structural, and the end of cylindrical structural is aduncate cutting edge.
The beneficial effects of the utility model are:
1, the front end and back end all is that lip seal configuration, stage casing are the integral type composite sealing ring of ladder-type structure, and dissimilar seal arrangements have the advantage of mutual supplement with each other's advantages;
2, simplified structure and technique, convenient processing and assembling are raised the efficiency, and reduce manufacture cost and administration cost;
3, be connected as a single entity by triple seal, increased the longitudinal degree of sealing, but the dough softening that Effective Raise leaks make sealing more reliable;
4, effectively prevent as the existing gap of O-ring seals squeeze-out phenomenon;
5, be provided with the convex shoulder of rectangle or trapezium structure, the axial pressure that the balanced seal circle is suffered.
Description of drawings
Fig. 1 is a kind of embodiment's of the utility model structural representation;
Fig. 2 is a kind of seal ring sectional schematic diagram;
Fig. 3 is the structural representation of prior art.
Among the figure, cylinder body 1; Middle body 2; The wide seal groove 21 of stepped shaft; Convex shoulder 22; Spring 3; Spring seat 4; Piston 5; Seal ring 6; Y shape class 61; Boot-shaped class 62; Stepped shaft 63; Cutting edge 64; O-ring seals 7.
Embodiment
Below in conjunction with accompanying drawing and specific embodiments the utility model is further described.
Embodiment 1: as shown in Figure 1, 2,
OnePlant the sealing configuration of piston-type spring braking chamber, comprise the cylinder body 1 and the middle body 2 that consist of spring chamber, be provided with spring 3 and spring seat 4 in the spring chamber, spring seat 4 heads on piston 5, piston 5 cooperates with the intermediate portion of middle body 2 is movable, be provided with the wide seal groove 21 of stepped shaft at piston 5 with the cooperation place of middle body 2, the intermediate portion of the wide seal groove 21 of stepped shaft is provided with inwardly outstanding convex shoulder 22, be embedded with the seal ring suitable with it 6 in the wide seal groove 21 of stepped shaft, seal ring 6 is composite sealing rings that stepped shaft 63 structures by the lip seal configuration of the boot-shaped class 62 of the lip seal configuration of the Y shape class 61 of front end and rear end and stage casing are connected as a single entity and consist of, the inner side surface of seal ring 6 is cylindrical structural, and the end of cylindrical structural is aduncate cutting edge 64.
Polytype seal arrangement is made as continuous integral structure, not only can reduces manufacture cost and administration cost, main is that dissimilar seal arrangements is had complementary advantages, simplified structure and simplification technique, and convenient processing and assembling are raised the efficiency; Be connected as a single entity by triple seal, increased the longitudinal degree of sealing because pressure leakage always longitudinally in gradient state successively decrease, but increased the dough softening that the depth Effective Raise of sealing leaks, make the sealing more reliable; Lip seal configuration can effectively prevent as the existing gap of O-ring seals squeeze-out phenomenon, so this is that prior art is used single-stage or the independently remarkable progress of multistage O-ring seals.
The lip-type packing of boot-shaped class is conducive to take into account dust reduction capability most, and lip structure one end of boot-shaped is coated on the piston periphery, and the other end covers on the end face of cylinder body, and dust-proof effect is especially good; The characteristics of the lip-type packing of Y shape class are to be applicable to exacting terms; Piston-type spring braking chamber is installed on the automobile, often will be at the road traveling that stirs up a cloud of dust, and the work characteristics of piston-type spring braking chamber is exactly inflation/deflation constantly, namely breathes, and just seems very important so prevent that flying dust from gathering and invading.
The convex shoulder 22 that the intermediate portion of the wide seal groove of ladder is provided with is rectangle or trapezium structure, rectangle or the suffered axial pressure of trapezium structure balanced seal circle.
Embodiment 2: the lip seal configuration of seal ring rear end is the lip-type packing of J type class, and the lip seal configuration of seal ring front end is the lip-type packing of V-arrangement class, and all the other structures are with embodiment 1; The lip-type packing of independent J type class comes off in order to prevent it, need to add compressing member, can not be used for end face seal or dustproof, and the composite sealing ring of three linking body structures of the present utility model then need not compressing member and can be used in end face seal and dustproof, especially end face dustproof effect, this is a long-standing problem for prior art, uses the utility model and can obtain satisfied solution.
Figure 3 shows that a kind of separated seal ring mounting structure figure of prior art, figure is shown with former and later two 0 shape seal rings 7.
The utility model can use at the piston-type spring braking chamber of various automobiles, have dissimilar seal arrangement mutual supplement with each other's advantages, simplified structure and technique, the convenient advantage of processing and assembling, raising the efficiency, reduce cost, if those skilled in the art does simple the modification or replacement to the foregoing invention content, such change can not think to break away from scope of the present utility model, and all will be included within the scope of claim of the present utility model the apparent modification of those skilled in the art like this.
Claims (9)
1.
OnePlant the sealing configuration of piston-type spring braking chamber, comprise the cylinder body and the middle body that consist of spring chamber, be provided with spring and spring seat in the spring chamber, spring seat heads on piston, piston cooperates with the intermediate portion of middle body is movable, it is characterized in that, be provided with the wide seal groove of stepped shaft at piston with the cooperation place of middle body, the intermediate portion of the wide seal groove of stepped shaft is provided with inwardly outstanding convex shoulder, be embedded with the seal ring suitable with it in the wide seal groove of stepped shaft, described seal ring is the composite sealing ring that the ladder-type structure by the lip seal configuration of the lip seal configuration of front end and rear end and stage casing is connected as a single entity and consists of.
2. the sealing configuration of piston-type spring braking chamber according to claim 1 is characterized in that, the lip seal configuration of seal ring rear end is the lip-type packing of boot-shaped class.
3. the sealing configuration of piston-type spring braking chamber according to claim 1 is characterized in that, the lip seal configuration of seal ring rear end is the lip-type packing of J type class.
4. according to claim 1 and 2 or the sealing configuration of 3 described piston-type spring braking chambers, it is characterized in that the lip seal configuration of seal ring front end is the lip-type packing of Y shape class.
5. according to claim 1 and 2 or the sealing configuration of 3 described piston-type spring braking chambers, it is characterized in that the lip seal configuration of seal ring front end is the lip-type packing of V-arrangement class.
6. any sealing configuration of a described piston-type spring braking chamber according to claim 4 is characterized in that the convex shoulder that the intermediate portion of the wide seal groove of ladder is provided with is rectangle or trapezium structure.
7. any sealing configuration of a described piston-type spring braking chamber according to claim 5 is characterized in that the convex shoulder that the intermediate portion of the wide seal groove of ladder is provided with is rectangle or trapezium structure.
8. any sealing configuration of a described piston-type spring braking chamber according to claim 6 is characterized in that the inner side surface of seal ring is cylindrical structural, and the end of cylindrical structural is aduncate cutting edge.
9. any sealing configuration of a described piston-type spring braking chamber according to claim 7 is characterized in that the inner side surface of seal ring is cylindrical structural, and the end of cylindrical structural is aduncate cutting edge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220565389 CN202883845U (en) | 2012-10-31 | 2012-10-31 | Sealing structure of piston-type spring braking chamber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220565389 CN202883845U (en) | 2012-10-31 | 2012-10-31 | Sealing structure of piston-type spring braking chamber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202883845U true CN202883845U (en) | 2013-04-17 |
Family
ID=48075276
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220565389 Expired - Fee Related CN202883845U (en) | 2012-10-31 | 2012-10-31 | Sealing structure of piston-type spring braking chamber |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202883845U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102954133A (en) * | 2012-10-31 | 2013-03-06 | 宁波神丰汽车制动系统有限公司 | Seal structure of piston type spring brake chamber |
-
2012
- 2012-10-31 CN CN 201220565389 patent/CN202883845U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102954133A (en) * | 2012-10-31 | 2013-03-06 | 宁波神丰汽车制动系统有限公司 | Seal structure of piston type spring brake chamber |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201566606U (en) | Brake master pump assembly | |
| CN201566605U (en) | Brake wheel cylinder assembly | |
| CN201891776U (en) | Automobile wheel cylinder assembly | |
| CN103758723A (en) | Air pump of engineering machinery braking system | |
| CN202883845U (en) | Sealing structure of piston-type spring braking chamber | |
| CN202251207U (en) | Hydraulic cylinder | |
| CN203201787U (en) | Leak type high pressure vane pump | |
| CN102954133A (en) | Seal structure of piston type spring brake chamber | |
| CN204878846U (en) | Air bleeding valve and piston thereof | |
| CN103148122A (en) | Clutch master pump and clutch assembly equipped with clutch master pump | |
| CN202100464U (en) | Rotary compressor | |
| CN209539522U (en) | A kind of new energy logistics vehicle air compressor | |
| CN203548193U (en) | Simple double-screw pump | |
| CN203161956U (en) | Sealing structure for reducing damping of piston of two-way jar accelerator | |
| CN201891775U (en) | Wheel cylinder assembly | |
| CN102418687B (en) | Simple type unfilled corner piston ring structure and the processing method thereof of clearance between piston and cylinder can be reduced | |
| CN205220646U (en) | Brake master cylinder assembly | |
| CN102425545B (en) | A kind of size cylinder spring combination compensation double-cavity vane pump | |
| CN203926511U (en) | Dust protected clutch booster | |
| CN201891774U (en) | Wheel brake cylinder assembly | |
| CN204755211U (en) | Axle load pump of biax out movement | |
| CN203201756U (en) | Piston of air compressor | |
| CN208966583U (en) | A kind of scroll air compressor using axial elasticity | |
| CN207814270U (en) | A kind of clutch booster assembly | |
| CN202132420U (en) | Spring brake chamber adopting internal respiration |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130417 Termination date: 20151031 |
|
| EXPY | Termination of patent right or utility model |