CN201439340U - Vehicle brake master cylinder - Google Patents
Vehicle brake master cylinder Download PDFInfo
- Publication number
- CN201439340U CN201439340U CN2009201320552U CN200920132055U CN201439340U CN 201439340 U CN201439340 U CN 201439340U CN 2009201320552 U CN2009201320552 U CN 2009201320552U CN 200920132055 U CN200920132055 U CN 200920132055U CN 201439340 U CN201439340 U CN 201439340U
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- China
- Prior art keywords
- cylinder
- cylinder body
- draw point
- boss
- cylinder cap
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- Expired - Lifetime
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- Transmission Of Braking Force In Braking Systems (AREA)
Abstract
The utility model relates to a vehicle brake master cylinder, which comprises a cylinder body, a cylinder cover and a steel needle, wherein the cylinder cover is assembled at one end of the cylinder body; the steel needle is connected with the cylinder body and the cylinder cover; an annular groove is formed at the inner surface at one end of the cylinder body connected with the cylinder cover; a boss is arranged on the cylinder cover; the steel needle is inserted into the annular groove and is connected with the cylinder body and the cylinder cover by matching the boss of the cylinder cover; and the steel needle is connected with the boss in a low pair way. Compared with the connection mode of the cylinder body and the cylinder cover of the existing brake master cylinder, in the utility model, the cylinder cover is connected with the cylinder body of the brake master cylinder in a low pair way, therefore, when the cylinder cover is impacted by brake fluid, the cylinder cover can not be beaten away from the cylinder body. The brake master cylinder in the utility model has the advantages of firm connection and good safety.
Description
[technical field]
The utility model relates to the motor vehicle braking system field, relates more specifically to a kind of master brake cylinder of plunger separation type.
[background technology]
Master brake cylinder is important components in the brake system of car, present domestic master brake cylinder mainly contains two kinds of central valve formula and plunger tpes, central valve formula master cylinder axial dimension is big, part is many, and plunger tpe master cylinder axial dimension is little, and part is few, and it is also little to take up room, along with the miniaturization of automobile, central valve formula master cylinder is substituted by the plunger tpe master cylinder gradually.The plunger tpe master cylinder is divided into integral type and separation type again, the integral type master cylinder is because the cylinder body processing difficulties, dress leather cup difficulty, and the separation type master cylinder body separates with cylinder cap, cylinder body is processed easily, the leather cup assembling is also simple, does not need special tool, and what integral type master cylinder and separation type master cylinder were used on the automobile at present is all many.
At present, as shown in Figure 1, 2, the separation type master cylinder adopts cylinder body 1 to be connected by inserting a cylindrical draw point 3 with cylinder cap 2 more, processes ring shaped slot at cylinder body 1 and cylinder cap 2 parts accordingly, with equipment a straight draw point 3 is pressed in the ring shaped slot then, is used for connecting cylinder body 1 and cylinder cap 2.This connection mode has simple in structure, and assembling is easy to advantage; But in the automobile emergency braking, master cylinder inside brake liquid moment hydraulic pressure is excessive, because the contact between cylinder cap 2 and the draw point 3 is actually the contact of line line, be that higher pair connects, i.e. cylinder cap maximum outside diameter place is as the C place among Fig. 2, cylinder cap 2 is that the line line contacts with cylindrical draw point 3, cylinder cap 2 is braked liquid easily and gets, and is commonly called as master cylinder 3 and is exploded, and has brought potential safety hazard to automobile brake like this.
[utility model content]
Technical problem to be solved in the utility model is at the master cylinder of existing master brake cylinder and the connection mode between the cylinder cap is insecure, the technological deficiency of poor stability, provide a kind of connection mode firm master brake cylinder, the feasible cylinder cap of master brake cylinder at any time can not be braked liquid and get from cylinder body.
In order to solve above-mentioned technical matters, the utility model provides a kind of car brakeing master cylinder, comprise cylinder body, be assemblied in the cylinder cap of cylinder body one end and the draw point that connects cylinder body and cylinder cap, the inside face that connects an end of cylinder cap at cylinder body is formed with circular groove, on cylinder cap, be provided with boss, draw point inserts in the circular groove and with the cooperation of cylinder cap boss cylinder body, cylinder cap is connected, and wherein, described draw point is connected with described boss lower pair.
Compare with the cylinder cap connection mode with the cylinder body of existing master brake cylinder, master cylinder cover of the present utility model is connected employing lower pair ways of connecting with cylinder body, and when cylinder cap was subjected to the impact of braking liquid, cylinder cap can not got out from cylinder body; This master brake cylinder has the advantage that connection mode is firm, safety is good.
[description of drawings]
Fig. 1 is the structural representation of prior art master brake cylinder;
Fig. 2 is the structure for amplifying scheme drawing at A place among Fig. 1;
Fig. 3 is the structural representation of master brake cylinder of the present utility model;
Fig. 4 is the structure for amplifying scheme drawing at B place among Fig. 3;
Fig. 5 is the perspective view of master brake cylinder of the present utility model;
Fig. 6 is the left view of Fig. 5;
[specific embodiment]
In order to make the purpose of this utility model, technical scheme and advantage clearer,, the utility model is further elaborated below in conjunction with drawings and Examples.Should be appreciated that specific embodiment described herein only in order to explanation the utility model, and be not used in qualification the utility model.
As shown in Figure 3, cylinder cap 2, the first stop mechanisms 5 that master brake cylinder comprises cylinder body 1, be arranged on first stop mechanism 5 and second stop mechanism 6 in the cylinder body and seal first stop mechanism 5 comprise first support 51, first leather cup 52, first spring 54, first piston 53, first inlet opening 55; First support 51 is fixed in the inner chamber of cylinder body 1, first leather cup 52, first piston 53 are assemblied in respectively on the inner ring of first support 51, and first piston 53 can relative first support, 51 sway, and first spring, 54 1 ends are connected in cylinder cap 2, one ends and are connected on the first piston 53; In the braking procedure of first stop mechanism 5, braking liquid enters in the cavity of first stop mechanism 5 by first inlet opening 55 that is arranged on first support 51.
In the assembling of vehicle braked system, the other end that second piston 62 connects spring mounting seat 63 connects vacuum booster, and vacuum booster connects the vehicle braked pedal; When running into emergency brake, operator's operating pedal, power is passed to master brake cylinder, braking liquid moment in win stop mechanism 5 and second stop mechanism, 6 cavitys is increased, and braking liquid acts on the cylinder cap 2, and it is extremely important to make that the connection mode of cylinder body 1 and cylinder cap 2 becomes, if cylinder body 1 is insecure with being connected of cylinder cap 2, cylinder cap 2 is easy to be forced out from cylinder body 1, makes and jeopardizes traffic safety by brake system failure.
Shown in Fig. 3-6, car brakeing master cylinder of the present utility model, comprise cylinder body 1, be assemblied in the cylinder cap 2 of cylinder body 1 one ends and the draw point 4 that connects cylinder body 1 and cylinder cap 2, the inside face that connects an end of cylinder cap 2 at cylinder body 1 is formed with circular groove 11, on cylinder cap 2, be provided with boss 21, draw point 4 inserts in the circular groove 11 and with 21 cooperations of cylinder cap boss cylinder body 1, cylinder cap 2 is connected, and wherein, described draw point 4 is connected with described boss 21 lower pairs.
The kinematic pair that two members are formed by the face contact is a lower pair; Two members are higher pair by the kinematic pair of point or line contact.
Compare with cylinder cap 2 connection modes with the cylinder body 1 of existing master brake cylinder, master cylinder cover 2 of the present utility model is connected employing lower pair ways of connecting with cylinder body 1, and when cylinder cap 2 was subjected to the impact of braking liquid, cylinder cap 2 can not got out from cylinder body 1; This master brake cylinder has the advantage that connection mode is firm, safety is good.
Preferably, described draw point 4 is the draw point of rectangle long strip type, and described circular groove 11 is the rectangular loop groove, and is the plane on the surface that boss 21 contacts with draw point 4, and a side of this plane and circular groove 11 is on the same perpendicular.As shown in Figure 4; When cylinder cap 2 is subjected to the impact of braking liquid, by the face face lower pair interconnect function of boss 21, make to connect to have better stability with rectangle draw point 4, be not easy to be destroyed.
Preferably, the degree of depth of described circular groove 11 equals the height of boss 21, makes the top and the bottom stress balance of rectangle draw point 4, has strengthened the connective stability of cylinder body 1 with cylinder cap 2.
In addition, insert the position of rectangle draw point 4 at cylinder body 1 and when casting, make the rectangular opening shape, wherein, during the rectangular opening casting with the slide block formation of loosing core.
As another embodiment of the present utility model, draw point also can be that cross-sectional plane is the triangle draw point, and the circular groove on the cylinder body also correspondingly is arranged to triangle and is cooperated with draw point, and draw point realizes that with the boss of cylinder cap lower pair is connected.
In the utility model, draw point also can be other some structures, as trapezoidal, as long as make draw point be connected with the cylinder cap lower pair, and can realize that the firm connection to cylinder body, cylinder cap all is a protection domain of the present utility model.
The above only is preferred embodiment of the present utility model, not in order to restriction the utility model, all any modifications of being done within spirit of the present utility model and principle, is equal to and replaces and improvement etc., all should be included in protection domain of the present utility model.
Claims (3)
1. car brakeing master cylinder, comprise cylinder body, be assemblied in the cylinder cap of cylinder body one end and the draw point that connects cylinder body and cylinder cap, the inside face that connects an end of cylinder cap at cylinder body is formed with circular groove, on cylinder cap, be provided with boss, draw point inserts in the circular groove and with the cooperation of cylinder cap boss cylinder body, cylinder cap is connected, and it is characterized in that: described draw point is connected with described boss lower pair.
2. according to the described car brakeing master cylinder of claim 1, it is characterized in that: described draw point is the rectangle draw point, and described circular groove is the rectangular loop groove, is the plane on the surface that boss contacts with draw point.
3. according to the described car brakeing master cylinder of claim 2, it is characterized in that: the degree of depth of described circular groove equals the height of boss.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201320552U CN201439340U (en) | 2009-05-22 | 2009-05-22 | Vehicle brake master cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201320552U CN201439340U (en) | 2009-05-22 | 2009-05-22 | Vehicle brake master cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201439340U true CN201439340U (en) | 2010-04-21 |
Family
ID=42544007
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201320552U Expired - Lifetime CN201439340U (en) | 2009-05-22 | 2009-05-22 | Vehicle brake master cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201439340U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104514893A (en) * | 2013-10-07 | 2015-04-15 | 恩德莱斯和豪瑟尔测量及调节技术分析仪表两合公司 | Sealing system and retractable assembly including such |
-
2009
- 2009-05-22 CN CN2009201320552U patent/CN201439340U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104514893A (en) * | 2013-10-07 | 2015-04-15 | 恩德莱斯和豪瑟尔测量及调节技术分析仪表两合公司 | Sealing system and retractable assembly including such |
| CN104514893B (en) * | 2013-10-07 | 2017-10-13 | 恩德莱斯和豪瑟尔分析仪表两合公司 | Sealing system and the recoverable component including sealing system |
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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 |
Granted publication date: 20100421 |
|
| CX01 | Expiry of patent term |