CN204553971U - Bleed screw and hydraulic brake - Google Patents
Bleed screw and hydraulic brake Download PDFInfo
- Publication number
- CN204553971U CN204553971U CN201520231134.4U CN201520231134U CN204553971U CN 204553971 U CN204553971 U CN 204553971U CN 201520231134 U CN201520231134 U CN 201520231134U CN 204553971 U CN204553971 U CN 204553971U
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- China
- Prior art keywords
- vent
- positive stop
- stop end
- screw
- push rod
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- 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
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Abstract
The utility model discloses a kind of bleed screw and hydraulic brake, this bleed screw comprises screw body, described screw body offers the vent extending through afterbody from head, also comprise push rod and elastic component, described push rod comprises force side and positive stop end, and described force side is arranged in the vent of described head, and described positive stop end is limited in described vent, and described positive stop end blocks described vent, the two ends of described elastic component abut the hole wall of described vent and described positive stop end respectively; When described push rod is subject to External Force Acting and moves and make described resilient member deforms, described positive stop end departs from the hole wall of described vent at least partly, becomes connected state to make described vent from blocking state.The bleed screw that the utility model provides, only needs pressing and unclamps push rod, substantially reducing the bleeding time.
Description
Technical field
The utility model relates to hydraulic brake technology, is specifically related to a kind of bleed screw and hydraulic brake.
Background technique
Hydraulic braking sytem brake fluid is as the medium of energy transferring, and brake fluid flows in hydraulic pipe line, if air enters hydraulic system, because of its compressibility, the Braking efficiency of braking system can be caused significantly to reduce.On the one hand owing to there is play between each component of hydraulic braking sytem, seepage place is can hardly be avoided; On the other hand when changing the brake parts such as hydraulic pipe line, break, brake fluid needs again to annotate, and in filling process, air can enter thereupon; Above-mentioned two aspects cause certainly existing air in hydraulic pipe line.Prior art can discharge the air in braking system after operational maintenance and replacing brake parts by bleed screw.
Fig. 1 is the half sectional view of bleed screw in prior art; Fig. 2 is one of using state figure of bleed screw in prior art; Fig. 3 is the using state figure bis-of bleed screw in prior art.As Figure 1-3.Bleed screw comprises the little ladder main body 11 of the large afterbody of head, and the vent 12 bleed screw offered from head to tail sidepiece, the housing 13 of braking system offers and steppedly runs through screw 14, under normal state, when bleed screw be tightened against run through in screw 14 time, the afterbody of bleed screw is connected to the ladder place running through screw 14, during venting, to back-out a little bleed screw, gap is there is between the afterbody of bleed screw and the hole wall running through screw 14, air in hydraulic channel is discharged by gap location, when release from the vent 12 of bleed screw be brake fluid (there is no air or bubble) full time, illustrate in braking system there is no air, again bleed screw is tightened.
The deficiencies in the prior art part is, during exhaust, need repeated multiple times unscrew tighten exhaust bolt, and, same braking system has more exhaust bolt usually, therefore each bleeding overlong time.
Prior art:
11, ladder main body; 12, vent; 13, housing; 14, screw is run through.
The utility model:
21, screw body; 22, vent; 23, push rod; 24, elastic component; 25, housing; 26, sealing gasket; 27, screw is run through; 28, hydrostatic sensor.
Model utility content
The purpose of this utility model is to provide a kind of bleed screw and hydraulic brake, to solve the problem of bleeding overlong time in prior art.
To achieve these goals, the utility model provides following technological scheme:
A kind of bleed screw, comprise screw body, described screw body offers the vent extending through afterbody from head, also comprise push rod and elastic component, described push rod comprises force side and positive stop end, and described force side is arranged in the vent of described head, and described positive stop end is limited in described vent, and described positive stop end blocks described vent, the two ends of described elastic component abut the hole wall of described vent and described positive stop end respectively;
When described push rod is subject to External Force Acting and moves and make described resilient member deforms, described positive stop end departs from the hole wall of described vent at least partly, becomes connected state to make described vent from blocking state.
Above-mentioned bleed screw, the axis of described vent and the dead in line of described screw body.
Above-mentioned bleed screw, described push rod is T-shaped bar, and the montant end of described T-shaped bar is force side, and the yardarm of described T-shaped bar is positive stop end.
Above-mentioned bleed screw, described positive stop end stretches out described head.
Above-mentioned bleed screw, described vent comprises the receiving cavity at middle part and the through hole at two ends, and the radial dimension of described receiving cavity is greater than the radial dimension of described through hole, and described positive stop end is limited in described receiving cavity.
Above-mentioned bleed screw, also comprises the sealing gasket be arranged on described positive stop end, and described positive stop end blocks described vent by described sealing gasket.
Above-mentioned bleed screw, described elastic component is spring.
A kind of hydraulic brake, comprise the hydraulic channel of housing and enclosure interior, described housing offers and runs through screw, also comprise above-mentioned bleed screw, described screw body matches with the described screw that runs through, one end of described vent is connected with described hydraulic channel, the other end of described vent and the ft connection of described housing.
In technique scheme, the bleed screw that the utility model provides, under general state, the vent running through screw body block by push rod, so just enclose hydraulic channel; When push rod is applied in pressure and is subjected to displacement, vent is communicated with again, so just can normal exhaust.With repeatedly tighten in prior art and unclamp screw and compare, the utility model only needs pressing and unclamps push rod, substantially reduces the operating time.
Because above-mentioned bleed screw has above-mentioned technique effect, the hydraulic brake comprising this bleed screw also should have corresponding technique effect.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present application or technological scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment below, apparently, the accompanying drawing that the following describes is only some embodiments recorded in the utility model, for those of ordinary skill in the art, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the half sectional view of bleed screw in prior art;
Fig. 2 is one of using state figure of bleed screw in prior art;
Fig. 3 is the using state figure bis-of bleed screw in prior art.
The half sectional view of the bleed screw that Fig. 4 provides for the utility model embodiment;
One of using state figure of the bleed screw that Fig. 5 provides for the utility model embodiment;
The using state figure bis-of the bleed screw that Fig. 6 provides for the utility model embodiment;
The loine pressure instrumentation plan of the bleed screw that Fig. 7 provides for the utility model embodiment.
Description of reference numerals:
Embodiment
In order to make those skilled in the art understand the technical solution of the utility model better, below in conjunction with accompanying drawing, the utility model is further detailed.
As Figure 4-Figure 6, a kind of bleed screw that the utility model provides, comprise screw body 21, screw body 21 offers the vent 22 extending through afterbody from head, also comprise push rod 23 and elastic component 24, push rod 23 comprises force side and positive stop end, force side is arranged in the vent 22 of head, positive stop end is limited in vent 22, and positive stop end blocks vent 22, and the two ends of elastic component 24 abut hole wall and the positive stop end of vent 22 respectively; When push rod 23 is subject to External Force Acting and moves and make elastic component 24 be out of shape, positive stop end departs from the hole wall of vent 22 at least partly, becomes connected state to make vent 22 from blocking state.
Concrete, screw body 21 is for being spirally connected with each housing 25 of hydraulic system, its outer wall arranges outside thread, the vent 22 run through is provided with in it, when screw body 21 is fixed on above-mentioned housing 25, one end of vent 22 is communicated with the hydraulic channel in housing 25, the other end of vent 22 and the ft connection of housing 25, thus, the two ends of vent 22 can be opened on the center line of screw body 21, also the sidepiece of sidepiece in screw body 21 head or afterbody can be opened, as preferably, vent 22 is straight hole, be arranged on the axis of screw body 21, be convenient to processing.
Push rod 23 and elastic component 24 match to block or be communicated with vent 22, push rod 23 comprises positive stop end and force side, force side is used for accepting external force, but positive stop end is limited in vent 22 and refers to it and can move in vent 22 can not depart from, namely limited, when not by extra External Force Acting, the positive stop end of push rod 23 and the hole wall of vent 22 fit tightly, block with this or cover vent 22, make vent 22 be in blocking state, and now elastic component 24 propping up push rod 23; When operator apply external force to the force side of push rod 23, push rod 23 moves and drives elastic component 24 to be out of shape, positive stop end partly or entirely leaves the hole wall of vent 22, vent 22 like this is connected, connected state is changed into by blocking state, when external force disappears, push rod 23 again blocks vent 22 under the effect of elastic component 24 restoring force.Above-mentioned steps completes the switching of vent 22 blocking state and connected state.On concrete structure, the force side of push rod 23 can be rod member, be arranged in the vent 22 of screw body 21 head, or above-mentioned head is stretched out in force side, and convenient operation personnel like this apply external force.Vent 22 be blocked or be covered to the positive stop end of push rod 23 can.When blocking, namely the profile of positive stop end is agreed with mutually with vent 22, if vent 22 is shoulder hole, comprise reduced diameter section and enlarged diameter section, positive stop end matches with reduced diameter section, when it inserts reduced diameter section, namely block reduced diameter section, namely vent 22 is plugged, and is in blocking state, when positive stop end departs from reduced diameter section, vent 22 is communicated with; When covering, positive stop end can be sheet material, and it is transverse in vent 22, and so blocking vent 22 makes it be in blocking state, and when sheet material portions leaves the cross section of vent 22, namely vent 22 is in connected state.The return action of elastic component 24 pairs of push rods 23 has two kinds, and one is replied for extending, as shown in Figure 6, external force promotes push rod 23 and moves, and positive stop end departs from vent 22 hole wall, push rod 23 compression elastic piece 24, after external force disappears, elastic component 24 extends, and promotes positive stop end and again covers vent 22; Its two for shorten reply, elastic component 24 can be connected in the head of screw body 21, and when push rod 23 moves down, elastic component 24 is elongated, when external force disappear after, elastic component 24 shortens, drive push rod 23 reply.
Obviously, the positive stop end of push rod 23 can rotate, slides, moves to block or be communicated with vent 22.
It should be noted that, identical with the general understanding of related domain about the head of screw body 21, the description of afterbody in the utility model, head refers to the one end for matching as spanner etc. with setting tool on screw, afterbody to refer to when screw is installed first with one end of internal thread bolt, as the head of sunk screw, round head bolt indication, the tail of self-tapping screw indication.
The bleed screw that the present embodiment provides, under general state, the vent 22 running through screw body 21 block by push rod 23, so just enclose hydraulic channel; When push rod 23 is applied in pressure and is subjected to displacement, vent 22 is communicated with again, so just can normal exhaust.With repeatedly tighten in prior art and unclamp screw and compare, the utility model only needs pressing and unclamps push rod 23, substantially reduces the operating time.
Simultaneously, as shown in Figure 7, hydraulic system in use needs periodic measurement retardation pressure, the way of prior art turns on bleed screw, and brake fluid flows into hydrostatic sensor 28, the bleed screw that the present embodiment provides by running through screw 27, the rod member of hydrostatic sensor 28 is only needed to press to push rod 23, hydraulic oil can flow out, and compared to existing technology, the bleed screw that the present embodiment provides operates more simple when retardation pressure is tested.
In the present embodiment, as shown in Figure 4, push rod 23 is T-shaped bar, and the montant end of T-shaped bar is force side, and the yardarm of T-shaped bar is positive stop end.T-shaped bar is convenient to processing.Further, vent 22 comprises the receiving cavity at middle part and the through hole at two ends, and the radial dimension of receiving cavity is greater than the radial dimension of through hole, and positive stop end is limited in receiving cavity.As seen in figs. 5-6, when the montant end of T-shaped bar is under pressure, the yardarm of T-shaped bar can conveniently be adjacent to or leave the hole wall of vent 22.
In the present embodiment, further, also comprise the sealing gasket 26 be arranged on positive stop end, positive stop end blocks vent 22 by sealing gasket 26.Sealing gasket 26 is for strengthening the blocking ability of positive stop end to vent 22.Seal section can be overlapped on positive stop end, preferably, sealing gasket 26 can sulfuration on positive stop end, connect more firm.
In the present embodiment, elastic component 24 is preferably spring, and obviously, elastic component 24 can also be that other has flexible component.
The present embodiment also provides a kind of hydraulic brake, comprise the hydraulic channel of housing 25 and housing 25 inside, housing 25 offers and runs through screw 27, also comprise above-mentioned bleed screw, screw body 21 with run through screw 27 and match, one end of vent 22 is connected with hydraulic channel, the other end of vent 22 and the ft connection of housing 25.
Because above-mentioned bleed screw has above-mentioned technique effect, the hydraulic brake comprising this bleed screw also should have corresponding technique effect.
Mode above only by illustrating describes some one exemplary embodiment of the present utility model, undoubtedly, for those of ordinary skill in the art, when not departing from spirit and scope of the present utility model, can revise described embodiment by various different mode.Therefore, above-mentioned accompanying drawing is illustrative with being described in essence, should not be construed as the restriction to the utility model claims.
Claims (8)
1. a bleed screw, comprise screw body, described screw body offers the vent extending through afterbody from head, it is characterized in that, also comprise push rod and elastic component, described push rod comprises force side and positive stop end, described force side is arranged in the vent of described head, described positive stop end is limited in described vent, and described positive stop end blocks described vent, and the two ends of described elastic component abut the hole wall of described vent and described positive stop end respectively;
When described push rod is subject to External Force Acting and moves and make described resilient member deforms, described positive stop end departs from the hole wall of described vent at least partly, becomes connected state to make described vent from blocking state.
2. bleed screw according to claim 1, is characterized in that, the axis of described vent and the dead in line of described screw body.
3. bleed screw according to claim 1, is characterized in that, described push rod is T-shaped bar, and the montant end of described T-shaped bar is force side, and the yardarm of described T-shaped bar is positive stop end.
4. bleed screw according to claim 3, is characterized in that, described positive stop end stretches out described head.
5. bleed screw according to claim 3, is characterized in that, described vent comprises the receiving cavity at middle part and the through hole at two ends, and the radial dimension of described receiving cavity is greater than the radial dimension of described through hole, and described positive stop end is limited in described receiving cavity.
6. bleed screw according to claim 1, is characterized in that, also comprises the sealing gasket be arranged on described positive stop end, and described positive stop end blocks described vent by described sealing gasket.
7. bleed screw according to claim 1, is characterized in that, described elastic component is spring.
8. a hydraulic brake, comprise the hydraulic channel of housing and enclosure interior, described housing offers and runs through screw, it is characterized in that, also comprise the bleed screw described in any one of claim 1-7, described screw body matches with the described screw that runs through, and one end of described vent is connected with described hydraulic channel, the other end of described vent and the ft connection of described housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520231134.4U CN204553971U (en) | 2015-04-16 | 2015-04-16 | Bleed screw and hydraulic brake |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520231134.4U CN204553971U (en) | 2015-04-16 | 2015-04-16 | Bleed screw and hydraulic brake |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204553971U true CN204553971U (en) | 2015-08-12 |
Family
ID=53829082
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520231134.4U Expired - Fee Related CN204553971U (en) | 2015-04-16 | 2015-04-16 | Bleed screw and hydraulic brake |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204553971U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104747767A (en) * | 2015-04-16 | 2015-07-01 | 安徽江淮汽车股份有限公司 | Venting screw and hydraulic brake |
-
2015
- 2015-04-16 CN CN201520231134.4U patent/CN204553971U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104747767A (en) * | 2015-04-16 | 2015-07-01 | 安徽江淮汽车股份有限公司 | Venting screw and hydraulic brake |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 230601 Anhui Province, Hefei City Industrial Park, the Peach Blossom Road No. 669 Patentee after: Anhui Jianghuai Automobile Group Limited by Share Ltd Address before: 230601 Anhui Province, Hefei City Industrial Park, the Peach Blossom Road No. 669 Patentee before: Anhui Jianghuai Automobile Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150812 Termination date: 20190416 |