CN203472841U - Dual-power-assisted brake vacuum booster - Google Patents
Dual-power-assisted brake vacuum booster Download PDFInfo
- Publication number
- CN203472841U CN203472841U CN201320613269.8U CN201320613269U CN203472841U CN 203472841 U CN203472841 U CN 203472841U CN 201320613269 U CN201320613269 U CN 201320613269U CN 203472841 U CN203472841 U CN 203472841U
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- CN
- China
- Prior art keywords
- reaction plate
- vacuum booster
- rubber
- control valve
- accommodation space
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Abstract
The utility model provides a dual-power-assisted brake vacuum booster which at least comprises a control valve body, a rubber feedback disc and a reaction rod. The rubber feedback disc is clamped between the end face of the control valve and a chassis of the reaction rod, containing spaces used for containing the expanded and deformed the rubber feedback disc are arranged among the two sides of an outer ring of the end of the rubber feedback disc, the outer ring of the end face of the control valve and the chassis of the reaction rod. According to the dual-power-assisted brake vacuum booster, the service life of the rubber feedback disc is prolonged; in addition, dual-power-assisted braking can be achieved without extra components, and the dual-power-assisted brake vacuum booster has the advantages of being easy to machine, simple in structure and low in cost.
Description
Technical field
The utility model relates to a kind of vacuum booster, relates in particular to a kind of two helping and compares vacuum booster.
Background technology
As everyone knows, the effects that adopt vacuum booster to reach brake boost in brake system of car at present more.Its cardinal principle is to utilize the pressure reduction of vacuum and atmosphere, thereby realizes the effect of power-assisted.As shown in Figure 1 and Figure 2, be respectively the structure for amplifying schematic diagram of A part in the structural representation of existing vacuum booster and Fig. 1, existing vacuum booster 100 mainly comprises forward and backward housing assy, the parts such as control valve body 101, choker relief valve 102, rubber reaction plate 103, reaction bar 104.Wherein, rubber reaction plate 103 is closely held between control valve body 101 and reaction bar 104, the chassis 105 of reaction bar 104 and a side tight joint of rubber reaction plate 103, the opposite side tight joint of the end face of control valve body 101 and rubber reaction plate 103, all to clamp rubber reaction plate 103.In use, by poor the produced thrust of different pressures of two epitrochoidal chambers in vacuum booster, amplify in proportion braking force, reach the effect of braking.Yet above-mentioned existing vacuum booster is for singly helping than vacuum booster, assist rate remains unchanged in braking procedure.Like this, when the higher moderating ratio of needs, for example, during emergency brake, just need to provide larger braking force, this just makes driver need to apply larger treadle effort, thereby has increased driver's burden, and being unfavorable for provides good driving sensation for driver.
In addition, as disclosing a kind of two helping, U.S. Patent application US20050166748A compares vacuum booster.It is with singly helping the key distinction than vacuum booster, the side engaging with the chassis of reaction bar at rubber reaction plate has accommodation space, when rubber reaction plate is subject to larger External Force Acting, rubber reaction plate expands will fill up accommodation space, thereby increased the active area between reaction bar and rubber reaction plate, and then change assist rate, realized two helping than braking.But it also has some shortcomings part: because existing two helping than vacuum booster only has accommodation space between rubber reaction plate and the chassis of reaction bar, rubber reaction plate through extruding can only expand to a side like this, easily produce defatigation, cause short defect in service life.
Because above-mentioned existing two shortcomings than vacuum booster that help, present technique designer is based on research for many years and field experience and expertise, in conjunction with actual service condition and structure technology demand, positive improvement and bring new ideas in addition, a kind ofly can extend rubber reaction plate two helping in service life and compare vacuum booster to realizing.
Prior art:
101-control valve body; 102-choker relief valve; 103-rubber reaction plate; 104-reaction bar; 105-chassis.
The utility model:
1-control valve body; 2-rubber reaction plate; 3-reaction bar; The chassis of 4-reaction bar; 5-accommodation space; 51-the first accommodation space; 52-the second accommodation space; 6-choker relief valve.
Utility model content
The purpose of this utility model is to provide a kind of two helping that can extend rubber reaction plate service life and compares vacuum booster.
For achieving the above object, the utility model proposes a kind of two helping and compare vacuum booster, at least comprise control valve body, rubber reaction plate and reaction bar, described rubber reaction plate is held between the end face of described control valve body and the chassis of described reaction bar, between the both sides, outer ring, end of described rubber reaction plate and the chassis of the end face outer ring of described control valve body and described reaction bar, has respectively for holding the accommodation space of described rubber reaction plate dilatational strain.
Two helping than vacuum booster as above, wherein, the triangular in shape or quadrangle of the cross-sectional plane of the accommodation space between the end of described rubber reaction plate and the chassis of described reaction bar.
Two helping than vacuum booster as above, wherein, the cross-sectional plane of the accommodation space between the end of described rubber reaction plate and the end face of described control valve body is quadrangle.
Two helping than vacuum booster as above, wherein, the accommodation space between the end of described rubber reaction plate and the chassis of described reaction bar is opened on the chassis of described reaction bar.
Two helping than vacuum booster as above, wherein, the accommodation space between the end of described rubber reaction plate and the end face of described control valve body is opened on the end face of described control valve body.
Compared with prior art, the utlity model has following characteristics and advantage:
1, the utility model is equipped with accommodation space in the both side ends of rubber reaction plate; rubber reaction plate can be simultaneously expands to the accommodation space of both sides; be conducive to like this rubber and feed back even hold-off pressure, rubber reaction plate is played a protective role, thereby extended service life of rubber reaction plate.
2 and, the utility model can be realized two helping than braking without increasing extra element, has simple and easy and simple in structure, the with low cost advantage of processing.
Accompanying drawing explanation
Accompanying drawing described here is only for task of explanation, and is not intended to limit by any way the utility model scope of disclosure.In addition, the shape of each parts in figure and proportional sizes etc. are only schematically, for helping understanding of the present utility model, are not shape and the proportional sizes that specifically limits each parts of the utility model.Those skilled in the art, under instruction of the present utility model, can select various possible shapes and proportional sizes to implement the utility model as the case may be.
Fig. 1 is the cross-sectional view of existing vacuum booster;
Fig. 2 is the structure for amplifying schematic diagram of A part in Fig. 1;
Fig. 3 is that the utility model pair helps than the cross-sectional view of vacuum booster embodiment one;
Fig. 4 is the structure for amplifying schematic diagram of A2 part in Fig. 3;
Fig. 5 is that the utility model pair helps than the cross-sectional view of vacuum booster embodiment two;
Fig. 6 is the structure for amplifying schematic diagram of A3 part in Fig. 5.
Description of reference numerals:
The specific embodiment
With the description of the utility model specific embodiment, can more be well understood to details of the present utility model by reference to the accompanying drawings.But the specific embodiment of the present utility model described here,, for explaining the purpose of this utility model, is only to restriction of the present utility model and can not be understood as by any way.Under instruction of the present utility model, technical personnel can be conceived based on possible distortion arbitrarily of the present utility model, and these all should be regarded as belonging to scope of the present utility model.
Please refer to Fig. 3 to Fig. 6, be respectively the utility model pair and help than the cross-sectional view of vacuum booster embodiment one; The structure for amplifying schematic diagram of A2 part in Fig. 3; The utility model is two to be helped than the cross-sectional view of vacuum booster embodiment two; The structure for amplifying schematic diagram of A3 part in Fig. 5.
As shown in Figure 3, Figure 4, two the helping the utility model proposes compared vacuum booster, at least comprise control valve body 1, rubber reaction plate 2 and reaction bar 3, rubber reaction plate 2 is held between the end face of control valve body 1 and the chassis 4 of reaction bar 2, between the both sides, outer ring, end of rubber reaction plate 2 and the chassis 4 of the end face outer ring of control valve body 1 and reaction bar 2, has respectively for holding the accommodation space 5 of rubber reaction plate 2 dilatational straiies.Between the end of rubber reaction plate 2 side and the end face of control valve body 1, be provided with the first accommodation space 51; And be provided with the second accommodation space 52 between the end of rubber reaction plate 2 opposite side and the chassis 4 of reaction bar 2.When rubber reaction plate 2 pressurized, rubber reaction plate 2 is subject to compression swelling like this, and its dilation will fill up accommodation space 51,52, thereby has increased the active area between reaction bar chassis 4 and rubber reaction plate 2, and then changes assist rate, has realized two helping than braking.Compare with existing two helping than brake servo unit; the utility model is equipped with accommodation space 51,52 in the both side ends of rubber reaction plate 2; rubber reaction plate 2 can be simultaneously expands to the accommodation space 51,52 of both sides; be conducive to so the even hold-off pressure of rubber reaction plate 2; rubber reaction plate 2 is played a protective role, thereby extended service life of rubber reaction plate 2.
Further, as shown in Figures 3 to 6, in the utility model, on the surface of the chassis 4 that the first accommodation space 51 is opened in reaction bar 3 with respect to rubber reaction plate 2 ends.The second accommodation space 52 is opened on the surface of control valve body 1 end face with respect to rubber reaction plate 2 ends.
Further, as shown in Figures 3 to 6, the cross-sectional plane of the second accommodation space 52 is quadrangle.As shown in Figure 3, Figure 4, in the utility model an optional embodiment, the first accommodation space 51 cross-sectional planes are quadrangle, and preferably, this tetragonal base is towards inclination rubber reaction plate 2 lopsidedness.As shown in Figure 5, Figure 6, in another optional embodiment of the utility model, the first accommodation space 51 is back taper, and its cross-sectional plane is triangular in shape, because triangular-section has slope, is more conducive to rubber and flows, and further improves rubber reaction plate durability.
Utility model control valve body the utility model in use, when driver pedal power hour, rubber reaction plate 2 is subject to after the extruding of choker relief valve and reaction bar 3, produce less elastic deformation, now assist rate I=A2/A1(is as shown in Fig. 3,5, wherein A1 is the area of contact of choker relief valve 6 and rubber reaction plate 2, and A2 is before accommodation space 51,52 is filled up in 2 expansions of rubber reaction plate, the chassis 5 of reaction bar and the area of contact of rubber reaction plate 2); And when driver pedal power is larger, thereby rubber reaction plate 2 expands and has increased the active area between reaction bar chassis 4 and rubber reaction plate 2 by filling up accommodation space 51,52, and then change assist rate, now produce assist rate I=A3/A1(as shown in Fig. 3,5, wherein A3 is that 2 expansions of rubber reaction plate are filled up after accommodation space 51,52, the chassis 5 of reaction bar and the area of contact of rubber reaction plate 2); Thereby vacuum booster has been realized two helping and has been compared braking function.The utility model is equipped with accommodation space 51,52 in the both side ends of rubber reaction plate 2; rubber reaction plate 2 can be simultaneously expands to the accommodation space 51,52 of both sides; be conducive to so the even hold-off pressure of rubber reaction plate 2; rubber reaction plate 2 is played a protective role, thereby extended service life of rubber reaction plate 2.And the utility model can be realized two helping than braking without increasing extra element, has simple and easy and simple in structure, the with low cost advantage of processing.
In addition, two helping than vacuum booster of the present utility model also can only have for holding the accommodation space of rubber reaction plate 2 dilatational straiies between the outer ring, end of rubber reaction plate 2 and the end face outer ring of control valve body 1, to realize two helping, compares braking function.
Detailed explanation for the respective embodiments described above, its object is only the utility model to make an explanation, so that can understand better the utility model, but, it is to restriction of the present utility model that these descriptions can not be construed to any reason, particularly, each feature of describing in different embodiments is combination in any mutually also, thereby form other embodiments, except there being clearly contrary description, these features should be understood to can be applied in any one embodiment, and are also not only confined to described embodiment.
Claims (5)
1. two helping compared vacuum booster, at least comprise control valve body, rubber reaction plate and reaction bar, described rubber reaction plate is held between the end face of described control valve body and the chassis of described reaction bar, it is characterized in that having respectively for holding the accommodation space of described rubber reaction plate dilatational strain between the both sides, outer ring, end of described rubber reaction plate and the chassis of the end face outer ring of described control valve body and described reaction bar.
2. two helping than vacuum booster as claimed in claim 1, is characterized in that, the triangular in shape or quadrangle of the cross-sectional plane of the accommodation space between the end of described rubber reaction plate and the chassis of described reaction bar.
3. two helping than vacuum booster as claimed in claim 1 or 2, is characterized in that, the cross-sectional plane of the accommodation space between the end of described rubber reaction plate and the end face of described control valve body is quadrangle.
4. two helping than vacuum booster as claimed in claim 1 or 2, is characterized in that, the accommodation space between the end of described rubber reaction plate and the chassis of described reaction bar is opened on the chassis of described reaction bar.
5. two helping than vacuum booster as claimed in claim 1 or 2, is characterized in that, the accommodation space between the end of described rubber reaction plate and the end face of described control valve body is opened on the end face of described control valve body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320613269.8U CN203472841U (en) | 2013-09-30 | 2013-09-30 | Dual-power-assisted brake vacuum booster |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320613269.8U CN203472841U (en) | 2013-09-30 | 2013-09-30 | Dual-power-assisted brake vacuum booster |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203472841U true CN203472841U (en) | 2014-03-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320613269.8U Expired - Lifetime CN203472841U (en) | 2013-09-30 | 2013-09-30 | Dual-power-assisted brake vacuum booster |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203472841U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103465892A (en) * | 2013-09-30 | 2013-12-25 | 京西重工（上海）有限公司 | Dual-boosting-ratio braking vacuum booster |
| US9334917B2 (en) | 2012-05-30 | 2016-05-10 | Beijing West Industries Co., Ltd. | Suspension damper assembly |
-
2013
- 2013-09-30 CN CN201320613269.8U patent/CN203472841U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9334917B2 (en) | 2012-05-30 | 2016-05-10 | Beijing West Industries Co., Ltd. | Suspension damper assembly |
| CN103465892A (en) * | 2013-09-30 | 2013-12-25 | 京西重工（上海）有限公司 | Dual-boosting-ratio braking vacuum booster |
| US9499148B2 (en) | 2013-09-30 | 2016-11-22 | Bwi (Shanghai) Co., Ltd. | Dual-rate brake vacuum booster |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140312 |
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| CX01 | Expiry of patent term |