CN205034104U - Vacuum booster assembly - Google Patents
Vacuum booster assembly Download PDFInfo
- Publication number
- CN205034104U CN205034104U CN201520639594.0U CN201520639594U CN205034104U CN 205034104 U CN205034104 U CN 205034104U CN 201520639594 U CN201520639594 U CN 201520639594U CN 205034104 U CN205034104 U CN 205034104U
- Authority
- CN
- China
- Prior art keywords
- control cock
- spring seat
- inner spring
- push rod
- valve
- 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.)
- Withdrawn - After Issue
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Abstract
The utility model discloses a vacuum booster assembly, include: the casing is equipped with piston disk and diaphragm in this casing, the diaphragm keeps apart the casing inner space for ante -chamber and back cavity, the valve body is equipped with the intercommunication in this valve body the vacuum passageway of ante -chamber and back cavity, the air valve, this air valve is located inside the valve body to communicate with the back cavity, control valve, this control valve are used for controlling vacuum passageway and air valve switching, the control valve push rod, the front end and the air valve of this control valve push rod are connected, the inner spring seat, this inner spring seat is fixed to be set up in the valve body, just with the radial seal of valve body inner wall, the outer spring seat, this outer spring seat sets firmly on the control valve push rod including, is equipped with control valve outer spring between spring holder and the outer spring seat, the control valve is connected with inner spring seat axial displacement, and is equipped with control valve inner spring between control valve and the inner spring seat. This structure makes the power of stepping on brake pedal less, and the flexibility of part is better, and driver's travelling comfort is better.
Description
Technical field
The utility model relates to brake device for car, is specifically related to a kind of vacuum booster assembly.
Background technology
Vacuum booster links together with master brake cylinder, and object utilizes air to follow the difference of pressure of vacuum to increase braking force, shortens stopping distance.In traditional vacuum booster structure, control cock push rod is connected with brake pedal, in the process stepping on brake pedal, moved ahead by brake pedal drived control valve push rod, control cock push rod is also connected with the control cock for controlling vacuum valve and choker relief valve opening and closing, close vacuum valve by control cock and open choker relief valve, air enters the back cavity of vacuum booster, thus makes vacuum booster produce power-assisted effect.After unclamping pedal, control cock and control cock push rod return to the state before stepping on brake pedal under the restoring force of spring.In the process of push down on the pedal and recovery, because control cock is fixedly connected with control cock push rod, belong to action simultaneously, this just requires that the elastic force of the power of pedal and spring is relatively large, so it is that alerting ability is not enough that vacuum booster is experienced intuitively to operator.
Summary of the invention
The technical problems to be solved in the utility model solves the poor defect of prior art vacuum booster alerting ability.
In order to solve the problems of the technologies described above, the technical scheme that the utility model provides is as follows: a kind of vacuum booster assembly, at least comprises,
Housing, is provided with piston plate and diaphragm in this housing, enclosure interior space is isolated into ante-chamber and back cavity by described diaphragm;
Valve body, is provided with the vacuum passage being communicated with described ante-chamber and back cavity in this valve body;
Choker relief valve, this choker relief valve is located at valve inner, and is communicated with described back cavity;
Control cock, this control cock is for controlling described vacuum passage and choker relief valve opening and closing;
Control cock push rod, the front end of this control cock push rod is connected with choker relief valve;
Also comprise:
Inner spring seat, this inner spring seat is fixedly installed in valve body, and this inner spring seat and valve interior wall radial seal;
Outer spring seat, this outer spring seat is fixedly arranged on control cock push rod, between described inner spring seat and outer spring seat, be provided with control cock outer spring;
Described control cock moves axially with inner spring seat and is connected, and is provided with control cock inner spring between control cock and inner spring seat;
Under initial condition, described choker relief valve is in closed condition, and described control cock inner spring is in compressive state.
Further, the end face of described inner spring seat near control cock one end is provided with annular groove, and described control cock is provided with the Plug Division adapted with annular groove, and this Plug Division is inserted in annular groove, and removable at the axial direction of annular groove, the inner wall sealing of radial direction and annular groove.
Further, described inner spring seat is provided with the circular step one installing control cock inner spring, and described control cock is provided with the circular step two corresponding with circular step one, and described control cock inner spring is installed between circular step one and circular step two.
Further, described inner spring seat is step-like structure away from one end of control cock, comprises First terrace and second step face, and the stepped diameters at place, described second step face is greater than the stepped diameters at First terrace place; The inwall of described valve end is provided with annular recess, this annular recess has the 3rd step surface, 3rd step surface and First terrace, the outside face of inner spring seat and the inside face of annular recess form annular seal space jointly, are provided with O RunddichtringO in described annular seal space.
Further, also comprise piston, piston head, counter-force dish and master cylinder push rod, described choker relief valve is located between control cock push rod and piston, described piston head is located at the front end of control cock, described piston head is provided with counter-force dish away from the side of piston, and described counter-force dish is connected with master cylinder push rod, and one end that described master cylinder push rod is connected with counter-force dish is embedded in valve body, the other end is located in ante-chamber, is also provided with pull back spring between described master cylinder push rod and housing.
In vacuum booster assembly of the present utility model, be connected for floating type between control cock with control cock push rod, in the process stepping on brake pedal and loosen the brake, control cock push rod 50 only needs driven plunger and choker relief valve to left movement, control cock is then under the effect of control cock inner spring restoring force, automatically to left movement, until close vacuum passage.This structure makes the power stepping on brake pedal slighter, and the alerting ability of part is better, and the traveling comfort of steerman is better.
Accompanying drawing explanation
Structural representation under Fig. 1 state that to be the present embodiment vacuum booster close at vacuum valve and choker relief valve simultaneously;
Fig. 2 is the part sectional view of vacuum booster shown in Fig. 1;
Fig. 3 is the connection diagram of inner spring seat and control cock in vacuum booster shown in Fig. 1;
Fig. 4 is the A of vacuum booster shown in Fig. 1 portion close-up schematic view;
Fig. 5 is the B of vacuum booster shown in Fig. 1 portion close-up schematic view;
Fig. 6 is that the present embodiment vacuum booster is opened at vacuum valve, structural representation under choker relief valve closed condition;
Fig. 7 is the C of vacuum booster shown in Fig. 6 portion close-up schematic view;
Fig. 8 is the structural representation of the present embodiment vacuum booster under vacuum valve closedown, choker relief valve open mode;
Fig. 9 is the D of vacuum booster shown in Fig. 8 portion close-up schematic view.
Detailed description of the invention
In order to make the purpose of this utility model, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the utility model, and be not used in restriction the utility model.
In description of the present utility model, it will be appreciated that, term " on ", D score, "front", "rear", " interior ", the orientation of the instruction such as " outward " or position relationship be based on orientation shown in the drawings or position relationship, only the utility model and simplified characterization for convenience of description, instead of the device of instruction or hint indication or element must have specific orientation, with specific azimuth configuration and operation, therefore can not be interpreted as restriction of the present utility model.
In description of the present utility model, it should be noted that, unless otherwise clearly defined and limited, term " installation ", " being connected ", " connection " should be interpreted broadly, and such as, can be fixedly connected with, connect integratedly, also can be removably connect; It can be the connection of two element internals; Can be directly be connected, also indirectly can be connected by intermediary, for the ordinary skill in the art, particular case can understand the concrete meaning of above-mentioned term in the utility model.
As shown in Figure 1 and Figure 2, the vacuum booster of the present embodiment comprises housing 10, piston plate 20, diaphragm 30, valve body 40, control cock push rod 50, piston 60, master cylinder push rod 70, piston head 90 and counter-force dish 100.Wherein enclosure interior space is divided into ante-chamber 11 and back cavity 12 by piston plate 20 and diaphragm 30.Wherein ante-chamber 11 is communicated with the induction maniflod of transmitting set through vacuum check valve, and back cavity 12 is communicated with by the vacuum passage 200 being located at valve body 40 inside.Its housing 10 is also provided with the bar 110 running through ante-chamber 11 and back cavity 12.
Further, direction as shown shown in Fig. 1, Fig. 2, the left end of valve body 40 is fixedly connected with piston plate 20 with diaphragm 30, being provided with the cavity for holding the parts such as control cock push rod 50, piston 60, master cylinder push rod 70, piston head 90 and counter-force dish 100 in valve body 40 inside, between master cylinder push rod 70 and the housing 10 at ante-chamber 11 place, being provided with pull back spring 80.The front end of control cock push rod 50 is connected with piston 60, between its control cock push rod 50 and piston 60, be also provided with choker relief valve 130, and this choker relief valve 130 is communicated with back cavity 12, and controls opening and closing by control cock 120.The front end of its piston 60 is provided with piston head 90, and the left side of this piston head 90 is provided with counter-force dish 100, under initial condition, is provided with certain gap between piston head 90 and counter-force dish 100.The part that left end and the master cylinder push rod 70 of its counter-force dish 100 embed valve body 40 inside is connected.
As the improvement of the present embodiment, the control cock 120 for pilot air valve 130 and vacuum passage 200 opening and closing is connected for floating type with control cock push rod 50.It is concrete that also comprise inner spring seat 140 and outer spring seat 150, wherein inner spring seat is fixedly installed in the cavity of valve body 40 as shown in Figure 2 and Figure 3, and radial seal; Outer spring seat 150 is fixedly arranged on the right-hand member of control cock push rod 50.Be provided with control cock outer spring 160 between spring perch 140 and outer spring seat 150 within it, this control cock outer spring 160 is preferably conical compression spring.
Further, as shown in Figure 3, control cock inner spring 170 is provided with between inner spring seat 140 and control cock 120.Correspondingly, inner spring seat 140 is provided with the circular step 1 installing control cock inner spring 170, control cock 120 is provided with the circular step two 172 corresponding with circular step 1, and its control cock inner spring 170 is installed between circular step 1 and circular step 2 172.Within it the left end of spring perch 140 also establishes annular groove 41, its control cock 120 is provided with the Plug Division 121 adapted with annular groove 41, this Plug Division 121 is inserted in annular groove 41, and removable at the axial direction of annular groove 41, the inner wall sealing of radial direction and annular groove 41.
As shown in Figure 3, Figure 4, the right-hand member of inner spring seat 140 is step-like structure, and comprise First terrace 141 and second step face 142, wherein the stepped diameters at place, second step face 142 is greater than the stepped diameters at First terrace 141 place.Accordingly, annular recess is provided with at valve body 40 right-hand member inwall, this annular recess has the 3rd step surface 173,3rd step surface 173 and First terrace 141 and the outside face of inner spring seat 140, the inside face of annular recess form annular seal space 190 jointly, and the right-hand member end face of valve body 40 is located by second step face 172.In sealing chamber 190, be provided with O-ring seals 180, compared with conventional seals structure, sealing mode is separated with control cock, the impact of uncontrolled valve motion, and is convenient to during assembling install seal ring.
The vacuum booster principle of work of the present embodiment is as follows:
Under initial condition, as shown in Figure 6, specifically as shown in I and II in Fig. 7, vacuum passage 200 and control cock 120 are in contactless state, i.e. open mode to the structure of vacuum booster; And choker relief valve 130 contacts with control cock 120, be in closed condition.In this case, ante-chamber 11 is communicated with back cavity 12, because ante-chamber 11 is communicated with the induction maniflod of transmitting set, when transmitting set runs, is vacuum state in ante-chamber 11 and back cavity 12.
After stepping on brake pedal, control cock push rod drives piston 60 and piston head 90 to left movement by the effect of treadle effort, after eliminating the gap between piston head 90 and counter-force dish 100, when piston head 90 extrudes the center of counter-force dish 100, counter-force dish 100 produces indentation deformation, and then promote master cylinder push rod 70 to left movement, compression retracteding position spring 80, makes master brake cylinder hydraulic pressure rise and imports each wheel cylinder into, produce braking force.
At control cock push rod 50 to while left movement, drive outer spring seat 150 affixed with it to left movement, and compression control valve outer spring 160.Promote piston 60 in the process of left movement at control cock push rod 50, choker relief valve 130, to left movement, discharges the pressure to control cock 120.Now, under the effect of control cock inner spring 170 restoring force being in compressive state, order about control cock 120 to left movement, until contact with vacuum passage 200, limited the axial location of control cock 120 by vacuum passage 200, now vacuum passage 200 is in closed condition.In the process of push down on the pedal, first the state that as shown in Figure 7 vacuum passage 200 is opened, choker relief valve 130 is closed, move to the state that in Fig. 5, III shown vacuum passage 200 is all closed with choker relief valve 130, in this case, the axial location of the relative valve body 40 of control cock 120 no longer moves, and piston 60 continues to left movement under the thrust of control cock push rod 50, and then choker relief valve 130 and control cock 120 are departed from, namely as IV shown vacuum passage 200 in Fig. 9 close, V shown choker relief valve 130 open mode.In this case, ante-chamber 11 is mutually isolated with back cavity 12, be still vacuum state, but as shown by the arrows in Figure 9, air enters back cavity 12 by choker relief valve 130, make the pressure of back cavity 12 be greater than the pressure of ante-chamber 11 in ante-chamber 11.Under the effect of difference of pressure, drive piston plate 20 and valve body 40 to left movement by diaphragm 30, increase the thrust of master cylinder push rod 70, thus play power-assisted effect, increase braking force.
After loosen the brake, order about choker relief valve 130, piston 60 and control cock push rod 50 by the screen resilience of pull back spring 80 and control cock outer spring 160 to move right, now choker relief valve 130 moves right with contacting and promote control cock 120, control cock inner spring 170 is made to be in compressive state, until return to the state shown in Fig. 7.
In the process stepping on brake pedal and loosen the brake, owing to being non-ly be fixedly connected with relation between control cock 120 with control cock push rod 50, control cock push rod 50 only needs driven plunger and choker relief valve to left movement, control cock is then under the effect of control cock inner spring restoring force, automatically to left movement, until close vacuum passage.This structure makes the power stepping on brake pedal slighter, and the alerting ability of part is better, and the traveling comfort of steerman is better.
In a word; the foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model, all do within spirit of the present utility model and principle any amendment, equivalent to replace and improvement etc., all should be included within protection domain of the present utility model.
Claims (5)
1. a vacuum booster assembly, at least comprises,
Housing, is provided with piston plate and diaphragm in this housing, enclosure interior space is isolated into ante-chamber and back cavity by described diaphragm;
Valve body, is provided with the vacuum passage being communicated with described ante-chamber and back cavity in this valve body;
Choker relief valve, this choker relief valve is located at valve inner, and is communicated with described back cavity;
Control cock, this control cock is for controlling described vacuum passage and choker relief valve opening and closing;
Control cock push rod, the front end of this control cock push rod is connected with choker relief valve;
It is characterized in that, also comprise:
Inner spring seat, this inner spring seat is fixedly installed in valve body, and this inner spring seat and valve interior wall radial seal;
Outer spring seat, this outer spring seat is fixedly arranged on control cock push rod, between described inner spring seat and outer spring seat, be provided with control cock outer spring;
Described control cock moves axially with inner spring seat and is connected, and is provided with control cock inner spring between control cock and inner spring seat;
Under initial condition, described choker relief valve is in closed condition, and described control cock inner spring is in compressive state.
2. according to vacuum booster assembly according to claim 1, it is characterized in that, the end face of described inner spring seat near control cock one end is provided with annular groove, described control cock is provided with the Plug Division adapted with annular groove, this Plug Division is inserted in annular groove, and removable at the axial direction of annular groove, the inner wall sealing of radial direction and annular groove.
3. according to vacuum booster assembly according to claim 1, it is characterized in that, described inner spring seat is provided with the circular step one installing control cock inner spring, described control cock is provided with the circular step two corresponding with circular step one, and described control cock inner spring is installed between circular step one and circular step two.
4. according to the vacuum booster assembly described in any one of claim 1-3, it is characterized in that, described inner spring seat is step-like structure away from one end of control cock, comprise First terrace and second step face, the stepped diameters at place, described second step face is greater than the stepped diameters at First terrace place;
The inwall of described valve end is provided with annular recess, this annular recess has the 3rd step surface, 3rd step surface and First terrace, the outside face of inner spring seat and the inside face of annular recess form annular seal space jointly, are provided with O RunddichtringO in described annular seal space.
5. according to vacuum booster assembly according to claim 4, it is characterized in that, also comprise piston, piston head, counter-force dish and master cylinder push rod, described choker relief valve is located between control cock push rod and piston, described piston head is located at the front end of control cock, described piston head is provided with counter-force dish away from the side of piston, described counter-force dish is connected with master cylinder push rod, one end that described master cylinder push rod is connected with counter-force dish is embedded in valve body, the other end is located in ante-chamber, is also provided with pull back spring between described master cylinder push rod and housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520639594.0U CN205034104U (en) | 2015-08-24 | 2015-08-24 | Vacuum booster assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520639594.0U CN205034104U (en) | 2015-08-24 | 2015-08-24 | Vacuum booster assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205034104U true CN205034104U (en) | 2016-02-17 |
Family
ID=55293028
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520639594.0U Withdrawn - After Issue CN205034104U (en) | 2015-08-24 | 2015-08-24 | Vacuum booster assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205034104U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105416262A (en) * | 2015-08-24 | 2016-03-23 | 浙江诸暨万宝机械有限公司 | Vacuum booster assembly |
| CN108641313A (en) * | 2018-05-18 | 2018-10-12 | 绍兴振荣汽车零部件有限公司 | A kind of vacuum booster valve body and preparation method thereof |
| CN112874496A (en) * | 2021-02-26 | 2021-06-01 | 高小明 | Vacuum booster for automobile braking |
-
2015
- 2015-08-24 CN CN201520639594.0U patent/CN205034104U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105416262A (en) * | 2015-08-24 | 2016-03-23 | 浙江诸暨万宝机械有限公司 | Vacuum booster assembly |
| CN105416262B (en) * | 2015-08-24 | 2018-09-25 | 浙江诸暨万宝机械有限公司 | A kind of vacuum booster assembly |
| CN108641313A (en) * | 2018-05-18 | 2018-10-12 | 绍兴振荣汽车零部件有限公司 | A kind of vacuum booster valve body and preparation method thereof |
| CN108641313B (en) * | 2018-05-18 | 2020-08-07 | 绍兴振荣汽车零部件有限公司 | Valve body for vacuum booster and preparation method thereof |
| CN112874496A (en) * | 2021-02-26 | 2021-06-01 | 高小明 | Vacuum booster for automobile braking |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20160217 Effective date of abandoning: 20180925 |
|
| AV01 | Patent right actively abandoned |