CN201109425Y - Braking pump of hydromechanical brake - Google Patents
Braking pump of hydromechanical brake Download PDFInfo
- Publication number
- CN201109425Y CN201109425Y CNU2007201839777U CN200720183977U CN201109425Y CN 201109425 Y CN201109425 Y CN 201109425Y CN U2007201839777 U CNU2007201839777 U CN U2007201839777U CN 200720183977 U CN200720183977 U CN 200720183977U CN 201109425 Y CN201109425 Y CN 201109425Y
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- brake
- brake pump
- pump piston
- seal ring
- pump
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Abstract
The utility model discloses a braking pump of a hydraulic braking device, belonging to the technical field of machinery and solving the problem that the prior braking pump is easy to get aging and has poor waterproof capability, deficient orientation function, short service life and high production cost. The braking pump of the hydraulic device comprises a pump body which is composed of an operation chamber, a braking pump piston is arranged inside the operation chamber, a leather cup which is arranged at the front end of the braking pump piston divides the operation chamber into two separate chambers, a spring which is used for resetting the braking pump piston is arranged between the front end of the braking pump piston and the pump body, a seal ring is sleeved on the rear end of the braking pump piston, and the seal ring is fixed inside the pump body in a cylindrical way. The braking pump of the hydraulic braking device has the advantages of excellent aging resistance performance, good waterproof property, excellent orientation function, low production cost, etc.
Description
Technical field
The utility model belongs to hydraulic braking machinery technical field, relates to the brake pump of a kind of brake pump, particularly a kind of hydraulic brake.
Background technology
In the prior art, hydraulic brake is a kind of widely used drg.Hydraulic brake adopts the structure by brake pump and brake clamp split, the pressure that utilizes brake pump to produce promotes brake clamp pressing friction sheet and brake disc, reach braking fast and effectively, so the quality quality of brake pump directly has influence on the safety of driving and the service life of product.
Existing brake pump as shown in Figure 2, it comprises the pump housing 1, brake pump piston 2, leather cup 3, spring 4 and dust boot 6, leather cup 3a and back leather cup 3b before the leather cup 3 here is divided into.Brake pump piston 2 is arranged in the pump housing 1, the front end of brake pump piston 2 is provided with preceding leather cup 3a, be used for sealing the pressure chamber 7 of brake pump piston 2 front ends, between the pump housing 1 and brake pump piston 2 front ends, be provided with spring 4, the middle part of brake pump piston 2 is provided with back leather cup 3b, prevent that braking liquid from revealing away, is provided with dust boot 6 in the rear end of brake pump piston 2 here, prevent that impurity such as dust, water from entering in the pump housing 1.Under the effect of external force, promote brake pump piston 2 forward, thereby make the space minimizing of pressure chamber 7 make the brake oil flow brake clamps in the pressure chamber 7 make it braking.After removing external force, under the effect of spring 4, brake pump piston 2 resets.
Because drag is very frequent, brake pump piston in the brake pump also is frequent action back and forth, dust boot on the brake pump piston is subjected to brake pump assembling and serviceability requirement, present structural behaviour is poor, do flexible torsional motion for a long time and wear out easily, damage, do not have the effect of dust and water protection.Dust or water can be pulled pump housing casing wall after entering the pump housing, have influence on the performance of brake, and the danger of driving is increased.When braking simultaneously, the brake-applying handle circular arc R acts on the power on the brake pump piston end surface, along with the motion of handle, is pressed into the angle and constantly changes, with respect to beat about the line of centers.The brake pump piston is subjected to multi-aspect side force, causes the too fast wearing and tearing of leather cup, has shortened the service life of brake pump.And adopt leather cup and this split-type structural cost of dust boot higher.
Summary of the invention
The purpose of this utility model is that the brake pump at existing hydraulic brake exists above-mentioned shortcoming, and a kind of brake pump of hydraulic brake is provided, and it is good that it has ageing-resistant performance, the water resistance height, and directional tagging is good, and product life is long, saves characteristics such as cost.
The purpose of this utility model can realize by following technical proposal: a kind of brake pump of hydraulic brake, comprise the pump housing with epitrochoidal chamber, in epitrochoidal chamber, be provided with the brake pump piston, front end at the brake pump piston is provided with the leather cup that epitrochoidal chamber is separated into two separate chamber, between the front end of this brake pump piston and the pump housing, be provided with and be used for the spring that the brake pump piston reset is used, it is characterized in that, described brake pump piston rear end is with seal ring, and the sealing circle is cylindric and is fixed in the pump housing.
Braking liquid be housed in epitrochoidal chamber after the installation of this brake pump and be connected with brake clamp, the brake pump piston under the effect of brake-applying handle power, thereby in hydraulic efficiency pressure system, set up pressure, play brake action.Here be noted that the brake pump piston promotes the brake pump piston forward manually and moves, when the brake pump piston forward moves, because the front end of the effect brake pump piston of leather cup flows to the pressure extrusion pump housing of the braking liquid in the epitrochoidal chamber with needs in the brake clamp, after external force is cancelled, under the effect of spring, the brake pump piston can automatically reset.In the rear end of brake pump piston seal ring being set and solving the leak free problem, simultaneously the sealing circle is made cylindricly, is interference fit with brake pump piston, the pump housing respectively, can blocks dust etc. impurity enter in the pump housing, simplify the structure.
In the brake pump of above-mentioned a kind of hydraulic brake, the epitrochoidal chamber of the described pump housing is provided with shoulder block and recessed draw-in groove, and collar in the form of a ring is housed in the draw-in groove, and the collar inside part stretches out draw-in groove, and above-mentioned seal ring is pressed between shoulder block and the collar.Mode by shoulder block and collar is with seal ring fixedly in the pump housing.
In the brake pump of above-mentioned a kind of hydraulic brake, described seal ring is enclosed within on the brake pump piston, and the brake pump piston can slidably reciprocate with respect to seal ring.
In the brake pump of above-mentioned a kind of hydraulic brake, have on the medial surface of described seal ring and be used to load the ringwise groove of lubricating grease.The friction force that can reduce between seal ring and the brake pump piston after the lubricating grease is housed in groove can guarantees good sealing property simultaneously.
In the brake pump of above-mentioned a kind of hydraulic brake, described brake pump middle of piston is provided with convex shoulder, and this convex shoulder withstands on the seal ring.Seal ring is fixed, and the brake pump piston is under the effect of spring, and the convex shoulder on the brake pump piston can push up on the seal ring, and the brake pump piston can not deviate from outside the pump housing.
In the brake pump of above-mentioned a kind of hydraulic brake, have intake chute on the described convex shoulder, this intake chute one end communicates with epitrochoidal chamber, and the other end communicates with above-mentioned groove.Braking liquid in the epitrochoidal chamber also has lubricant effect, braking liquid is imported to play lubricating effect in the groove and reduce friction.
In the brake pump of above-mentioned a kind of hydraulic brake, described seal ring is made by oil-resistant rubber material.Can absorb the lateral thrust of brake pump piston like this, improve durability test cycle.
Compared with prior art, the brake pump of this hydraulic brake has following advantage:
1, the brake pump piston rear end adopts and to be seal ring cylindraceous and to seal the pump housing and brake pump piston, except the requirement of satisfying leak tightness, also can play simultaneously impurity such as preventing dust and enter into the interior effect of the pump housing, can prevent that also sealing enters in the pump housing, simplify the structure, saved cost.
2, the sealing circle is simple in structure, and ageing-resistant performance is good, and seal ring particularly cylindraceous adopts oil-resistant rubber material to make, and can absorb the lateral thrust of brake pump piston, prevents that the brake pump piston from pulling the brake pump casing wall, has prolonged the service life of product.
3, on the convex shoulder of brake pump piston, have intake chute and can flow to the seal ring place, can also can reduce friction in the situation that does not have lubricating grease like this, reduced the wearing and tearing of seal ring, improved service life by braking liquid.
Description of drawings
Fig. 1 is the structural representation of the brake pump of this hydraulic brake.
Fig. 2 is the structural representation of brake pump of the hydraulic brake of prior art.
Among the figure, the pump housing 1; Epitrochoidal chamber 1a; Shoe cream room 1b; Oil outlet 1c; Oil inlet passage 11; Drainback passage 12; Chamber 1; Chamber 14; Shoulder block 15; Draw-in groove 16; Collar 17; Brake pump piston 2; Convex shoulder 21; Intake chute 22; Leather cup 3; Leather cup 3a; Back leather cup 3b; Spring 4; Seal ring 5; Groove 51; Dust boot 6; Pressure chamber 7.
The specific embodiment
Below be specific embodiment of the utility model and in conjunction with the accompanying drawings, the technical solution of the utility model is further described, but the utility model be not limited to these embodiment.
As shown in Figure 1, the brake pump of this hydraulic brake is applied on the motor bike, is connected with drg on the motor bike, comprise the pump housing 1, brake pump piston 2, leather cup 3, spring 4 and seal ring 5, thereby be to be used for the braking liquid in the pump housing 1 is pressed into making the drg braking in the drg.
Specifically, the pump housing 1 is provided with epitrochoidal chamber 1a, shoe cream room 1b and oil outlet 1c, epitrochoidal chamber 1a and shoe cream room 1b have oil inlet passage 11 and drainback passage 12, in epitrochoidal chamber 1a, be provided with and promote the brake pump piston 2 that braking liquid flows, leather cup 3 is arranged on the front end of brake pump piston, its position is between oil inlet passage 11 and the drainback passage 12, this leather cup 3 is separated into two separate chamber with epitrochoidal chamber 1a, both chamber 1 and chamber 2 14, oil inlet passage 11 and oil outlet 1c are communicated with chamber 1 respectively, and drainback passage 12 is communicated with chamber 2 14, and spring 4 is located in the chamber 1, the one end withstands on the pump housing 1, and the other end withstands on the front end of brake pump piston 2.Seal ring 5 is cylindric, is used for sealing the pump housing 1 and brake pump piston 2, and sealing circle 5 is enclosed within the rear end of brake pump piston 2, and brake pump piston 2 can slidably reciprocate with respect to seal ring 5.For the friction force that has reduced between seal ring 5 and the brake pump piston 2 can guarantee good sealing property simultaneously, seal ring 5 contacts with brake pump piston 2 and has the groove 51 of annular on the side, is used to load lubricating grease at this groove 51.
The middle part of brake pump piston 2 is provided with convex shoulder 21, this convex shoulder 21 withstands on the seal ring 5, and seal ring 5 maintains static, and brake pump piston 5 is under the effect of spring 4, convex shoulder 21 on the brake pump piston 2 can push up on the seal ring, and brake pump piston 2 can not deviate from outside the pump housing 1.Have intake chute 22 on the convex shoulder 21, these intake chute 22 1 ends communicate with epitrochoidal chamber 11, and the other end communicates with groove 51.Braking liquid in the epitrochoidal chamber 11 can import in the groove 51 and play lubricating effect.
This brake pump is mounted in the parking brake place of motor bike, during brake, press the parking brake handle, handle promotes brake pump piston 2 and moves forward and compression spring 4, when the leather cup 3 of brake pump piston 2 front ends surpasses oil inlet passage 11, chamber 1 just forms a pressure chamber, has in the brake oil flow drg of pressure, makes the drg braking.After the release handle, under the effect of spring, brake pump piston 2 automatically resets.Owing in the rear end of brake pump piston 2 seal ring 5 is set, so braking liquid can not reveal, simultaneously sealing circle 5 is made cylindric, can blocks dust etc. impurity enter in the pump housing 1.
Specific embodiment described herein only is that the utility model spirit is made casehistory.The utility model person of ordinary skill in the field can make various modifications or replenishes or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present utility model or surmount the defined scope of appended claims.
Although this paper has used the pump housing 1 morely; Epitrochoidal chamber 1a; Shoe cream room 1b; Fuel-displaced 1c; Oil inlet passage 11; Drainback passage 12; Chamber 1; Chamber 2 14; Shoulder block 15; Draw-in groove 16; Collar 17; Brake pump piston 2; Convex shoulder 21; Intake chute 22; Leather cup 3; Spring 4; Seal ring 5; Groove 51 terms such as grade, but do not get rid of the possibility of using other term.Using these terms only is in order to describe and explain essence of the present utility model more easily; They are construed to any additional restriction all is contrary with the utility model spirit.
Claims (7)
1, a kind of brake pump of hydraulic brake, comprise the have epitrochoidal chamber pump housing (1) of (1a), in epitrochoidal chamber (1a), be provided with brake pump piston (2), front end at brake pump piston (2) is provided with the leather cup (3) that epitrochoidal chamber (1a) is separated into two separate chamber, between the front end of this brake pump piston (2) and the pump housing (1), be provided with and be used for the reset spring (4) of usefulness of brake pump piston (2), it is characterized in that, described brake pump piston (2) rear end is with seal ring (5), and sealing circle (5) is cylindric and is fixed in the pump housing (1).
2, the brake pump of a kind of hydraulic brake according to claim 1, it is characterized in that, the epitrochoidal chamber (1a) of the described pump housing (1) is provided with shoulder block (15) and recessed draw-in groove (16), draw-in groove (17) in the form of a ring is housed in the draw-in groove (16), and draw-in groove (17) inside part stretches out draw-in groove (16), and above-mentioned seal ring (5) is pressed between shoulder block (15) and the draw-in groove (17).
3, the brake pump of a kind of hydraulic brake according to claim 1 and 2 is characterized in that, described seal ring (5) is enclosed within on the brake pump piston (2), and brake pump piston (2) can slidably reciprocate with respect to seal ring (5).
4, the brake pump of a kind of hydraulic brake according to claim 3 is characterized in that, has on the medial surface of described seal ring (5) to be used to load the ringwise groove of lubricating grease (51).
According to the brake pump of claim 1 or 2 or 4 described a kind of hydraulic brakes, it is characterized in that 5, the middle part of described brake pump piston (2) is provided with convex shoulder (21), this convex shoulder (21) withstands on the seal ring (5).
6, the brake pump of a kind of hydraulic brake according to claim 5 is characterized in that, has intake chute (22) on the described convex shoulder (21), and these intake chute (22) one ends communicate with epitrochoidal chamber (1a), and the other end communicates with above-mentioned groove (51).
According to the brake pump of claim 1 or 2 or 4 or 6 described a kind of hydraulic brakes, it is characterized in that 7, described seal ring (5) is made by oil-resistant rubber material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201839777U CN201109425Y (en) | 2007-10-17 | 2007-10-17 | Braking pump of hydromechanical brake |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201839777U CN201109425Y (en) | 2007-10-17 | 2007-10-17 | Braking pump of hydromechanical brake |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201109425Y true CN201109425Y (en) | 2008-09-03 |
Family
ID=39893950
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201839777U Expired - Fee Related CN201109425Y (en) | 2007-10-17 | 2007-10-17 | Braking pump of hydromechanical brake |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201109425Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102869553A (en) * | 2010-05-04 | 2013-01-09 | 大陆-特韦斯贸易合伙股份公司及两合公司 | Master cylinder for a hydraulic motor vehicle brake system |
-
2007
- 2007-10-17 CN CNU2007201839777U patent/CN201109425Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102869553A (en) * | 2010-05-04 | 2013-01-09 | 大陆-特韦斯贸易合伙股份公司及两合公司 | Master cylinder for a hydraulic motor vehicle brake system |
| CN102869553B (en) * | 2010-05-04 | 2015-11-25 | 大陆-特韦斯贸易合伙股份公司及两合公司 | For the master cylinder of automotive hydraulic brake system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080903 Termination date: 20111017 |