CN100395081C

CN100395081C - Pump-adjuster of braker with pressure-releasing valve

Info

Publication number: CN100395081C
Application number: CNB2005101056700A
Authority: CN
Inventors: 刘来诚
Original assignee: CHENGDAI Co Ltd
Current assignee: CHENGDAI Co Ltd
Priority date: 2005-09-30
Filing date: 2005-09-30
Publication date: 2008-06-18
Anticipated expiration: 2025-09-30
Also published as: CN1940333A

Abstract

A brake subpump adjuster with a pressure-relief valve comprises a cylinder, a lever, a push rod, an intake valve and a pressure-relief valve. The cylinder has first and second ends and at the first end is disposed a fixed piece. One end of the lever is set at the second end of the cylinder and the other end has a joint. The push-rod movable passes through the cylinder and the handle. At one end of the push-rod is disposed a support piece to press the subpump and at the other end is disposed a handle to rotate the push-rod. The intake valve is disposed on one side of the lever to make the piston move, so as to make the push-rod shift. The pressure-relief valve is set on the other side of the lever for relasing high-pressure gas from the cylinder to pull back the push-rod to the initial position.

Description

Wheel cylinder adjuster with pressure relieving valve

Technical field

The present invention mainly discloses a kind of wheel cylinder adjuster, is meant a kind of wheel cylinder adjuster with pressure relieving valve especially.

Background technology

The braking automobile wheel cylinder can protrude along with the wearing and tearing attenuation of brake block thereupon gradually at present, and when brake block may wear to a certain degree necessary the replacing, the brake block that then needs to divide pump shaft rotation and pressurization that the original distance of its answer could more be renewed was earlier packed into.

Yet branch pump governor (as shown in Figure 1 and Figure 2) structure of traditional type includes a screw rod 1,1a approximately, and the one end is provided with handle 5, end is provided with one and supports sheet 4 in addition, one stator 2, one side have a nut 3 to provide screw rod 1 to pass through, and use to reach the effect that wheel cylinder 6 is pressed into.But general disc brake wheel cylinder is because of sharing with the hand brake, some wheel cylinder dextrorotation thread, and some then uses left-handed thread, so causes the maintenance personal need have the screw rod 1 of two kinds of rotation directions, the inconvenience that 1a uses.

Because the disappearance of above-mentioned known configurations, the inventor invents out a kind of wheel cylinder adjuster with pressure relieving valve, and it can overcome all shortcomings of above-mentioned conventional articles.

Summary of the invention

The technical problem that the present invention has the wheel cylinder adjuster institute desire solution of pressure relieving valve is, the essential thread rotation direction of considering wheel cylinder of the rotation direction of the screw rod of this known minute pump governor, use with correspondence, the screw rod that so causes the maintenance personal need prepare two kinds of rotation directions simultaneously is used, comparatively inconvenience in the maintenance.

Therefore, the objective of the invention is to, a kind of wheel cylinder adjuster with pressure relieving valve is provided, it installs a pressure relieving valve by lever, when desiring to retract push rod to initial position, can push pressure relieving valve and use the gases at high pressure of discharging in the cylinder body; Wherein, the present invention can not limit and be subjected in rotation direction, and lever can provide the worker convenience smoothly in the use as gripping use.

For this reason, the present invention has the wheel cylinder adjuster of pressure relieving valve, and it comprises: a cylinder body, have first end and second end, and first end is provided with a stator; One lever, an end are located at cylinder body second end, and end then is provided with a joint in addition; One push rod, it passes through cylinder body and lever movably, and wherein push rod one end is provided with to sheet in order to the compressing wheel cylinder, and in addition end is provided with the leader in order to the rotation push rod; One intake valve is arranged at lever one side, is imported in the cylinder body by joint in order to the Selective Control gases at high pressure, and then promotes piston and move, so that push rod produces displacement; One pressure relieving valve is arranged at the lever opposite side, in order to discharging the gases at high pressure in the cylinder body, retracting push rod easily to initial position, and is not subjected to the restriction of rotation direction, has effect quite easily in fact.

Other purpose, advantage and novel characteristics of the present invention will be more obvious from the following detailed description and related drawings.

Relevant the technology used in the present invention, means and effect thereof, by this preferred embodiment and cooperate graphic detailed description as after, this only for the usefulness of explanation, is not subjected to the restriction of this kind structure in patent application.

Description of drawings

Fig. 1: for traditional type divides pump governor () schematic diagram.

Fig. 2: for traditional type divides pump governor (two) schematic diagram.

Fig. 3: be stereo appearance figure of the present invention.

Fig. 4: be structure cutaway view of the present invention.

Fig. 5: be intake valve of the present invention and pressure relieving valve exploded view.

Fig. 6: be handle structure cutaway view of the present invention.

Fig. 7: be intake valve action schematic diagram of the present invention.

Fig. 8: for piston of the present invention is subjected to the air pressure displacement diagram.

Fig. 9: be pressure relieving valve action schematic diagram of the present invention.

The specific embodiment

With reference to Fig. 3, stereo appearance figure of the present invention.Show to the present invention includes a cylinder body 20, it has first end and second end, second fixture 22 that first end has one first fixture 21 and combines with it, and this

first fixture

21 and 22 of second fixtures are installed with a stator 23.

One lever, 30, one ends are fixedly arranged on cylinder body 20 second ends.Other end then is provided with a joint 31 and is connected with pneumatic supply.

One push rod 40, it passes through cylinder body 20 and lever 30 movably, and these push rod 40 1 ends are provided with to sheet 41 in order to the compressing wheel cylinder, and end is provided with leader 42 in order to rotation push rod 40 in addition.

One intake valve 50 is arranged at lever 30 1 sides, whether enters cylinder body 20 in order to control air pressure.

One pressure relieving valve 60 is arranged at lever 30 side in addition, in order to discharge the air pressure in the cylinder body 20.

With reference to Fig. 4, structure cutaway view of the present invention.Show to be provided with a room 24 in the cylinder body 20 of the present invention, aforementioned lever 30 has one first air flue 32 and communicates with room 24.One piston 25 is arranged in the room 24, and this piston 25 is nested with and is fixed on the push rod 40, and piston 25 can be moved with push rod 40, and wherein piston 25 peripheries are provided with two grooves 251, with installing O shape ring 252, room 24 is separated separately.

With reference to Fig. 5, be intake valve of the present invention and pressure relieving valve exploded view.Show that hold Bing 30 inside is axially arranged with one second air flue 33 and communicates with joint 31, this

second air flue

33 and 32 of first air flues are provided with the storage tank 34 of end opening, in order to install intake valve 50.These storage tank 34 middle sections have a shoulder 341, and are provided with internal thread 342 in storage tank 34 open ends.Wherein lever 30 has the 3rd open air flue 36 of an end in addition and communicates with first air flue 32, and the 3rd air flue 36 open end are provided with internal thread 37.

Aforesaid intake valve 50 comprises a fixture 51, a depression bar 52, a spring 53 and a pressing plate 54.This fixture 51 is provided with the through hole 511 of both ends open, and fixture 51 has the internal thread 342 that an external screw thread 512 is screwed together in storage tank 34, and the end that this fixture 51 stretches into storage tank 34 has a flange 514 and is connected to shoulder 341.Wherein fixture 51 has a cross-drilled hole 513.This depression bar 52 is located between through hole 511 two ends of fixture 51 movably, depression bar 52 comprises sphaerocepharous first end 521 and second end 522, second end, 522 sides have stopper 525, and

first end

521 and 522 at second end are provided with an annular groove 523 with installing O shape ring 524 in addition.These spring 53 1 ends are placed on depression bar 52 second ends 522, and end then is connected to storage tank 34 bottom land places in addition.This pressing plate 54 has two earholes 541, and to be fixed in the combined hole 351 of the joint portion 35 of lever 30 with a pin 55, by pushing pressing plate 54, its depression bar 52 relative fixed parts 51 of can conflicting move, and second air flue 33 is communicated with first air flue 32.

Aforementioned pressure relieving valve 60 comprises a fixture 61, a movable part 62, a pressing piece 63, a spring 64.These fixture 61 1 ends have the internal thread 37 that an external screw thread 611 is screwed together in the 3rd air flue 36.Fixture 61 is provided with a perforation 612 in external screw thread 611 ends, then be provided with a groove 613 in other end and be communicated with perforation 612.Be located at 613 of the perforation 612 of fixture 61 and grooves, movable part 62 1 ends are equipped with O shape ring 622 these movable part 62 packaged types, and end then has an external screw thread 621 in addition.These pressing piece 63 1 ends have a locating slot 631, are provided with screw 632 in this locating slot 631, make movable part 62 external screw threads 621 pass through fixture 61 and are screwed together in screw 632, and wherein these spring 64 1 ends are connected in the locating slot 631, and end then is connected in the groove 613 in addition.The right external force of working as forces in pressing piece 63, and pressing piece 63 relative fixed parts 61 are moved, and can order about movable part 62 relative fixed parts 61 and move, so that the 3rd air flue 36 is connected with perforation 612.

With reference to Fig. 6, be handle structure cutaway view of the present invention.Show that intake valve 50 and pressure relieving valve 60 all are positioned at not operating position state, wherein hold depression bar 52 second ends 522, make stopper 525 sealing through holes 511, make air pressure can't enter first air flue 32 by spring 53.

With reference to Fig. 7, be intake valve action schematic diagram of the present invention.Show that working as joint 31 is communicated with pneumatic supply, and move, make stopper 525, can make air pressure through second air flue 33, storage tank 34, cross-drilled hole 513, and flow to first air flue 32 away from through hole 511 by pushing casting die 54 pushing and pressing depression bars 52 relative fixed parts 51.

With reference to Fig. 8, for piston of the present invention is subjected to the air pressure displacement diagram.Show that working as air pressure enters in the room 24 through first air flue 32, and gas pressure is greater than the frictional force between O shape ring 252 and cylinder body 20 inwalls, can promote piston 25 by air pressure moves toward first fixture, 21 directions, so can drive push rod 40 relative cylinder bodies 20 and produce displacement, to reach the compressing wheel cylinder, with handle 42 turn push rods 40, drive and support sheet 41 rotations, again to reach the effect of adjusting wheel cylinder.

With reference to Fig. 9, be pressure relieving valve action schematic diagram of the present invention.Show when external force imposes on pressing piece 63, pressing piece 63 is subjected to force compresses spring 64, pressing piece 63 relative fixed parts 61 are moved, produce slippage to order about movable part 62 relative fixed parts 61, make O shape ring 622 openends away from perforation 612, the air that reaches in the lever 30 discharges and goes out via first air flue 32, the 3rd air flue 36, perforation 612, so can retract push rod 40 easily.

In view of the above, the present invention has value on the industry; And not seeing again has identical or similar invention to come across domestic and international publication or public use, meets the positive and passive key element of patent statute.

Only the above, only be preferred embodiment of the present invention, when can not with qualification scope of the invention process, so the displacement of the change of numerical value or equivalent elements such as, or, all should still belong to the category that patent of the present invention contains according to equalization variation and modification that the present patent application claim is done.

Claims

1. wheel cylinder adjuster with pressure relieving valve, it includes:

One cylinder body has first end and second end, and first end is provided with a stator, wherein has a piston in the cylinder body;

One lever, an end are located at cylinder body second end, and end then is provided with a joint in addition, and wherein lever communicates with cylinder interior;

One push rod, it passes through cylinder body and lever movably, and combines with piston, and wherein push rod one end is provided with one and supports sheet in order to the compressing wheel cylinder, and end is provided with the leader in order to the rotation push rod in addition;

One intake valve is arranged at lever one side, is imported in the cylinder body by joint in order to the Selective Control gases at high pressure, and then promotes piston and move, so that push rod produces displacement;

One pressure relieving valve is arranged at the lever opposite side, in order to discharge the gases at high pressure in the cylinder body, to retract push rod easily to initial position.

2. the wheel cylinder adjuster with pressure relieving valve as claimed in claim 1, it is characterized in that having a room in the cylinder body, lever has one first air flue and communicates with room, wherein lever has one second air flue in addition and is communicated with joint, and intake valve is arranged between first air flue and second air flue.

3. the wheel cylinder adjuster with pressure relieving valve as claimed in claim 1, it is characterized in that, the lever side has a storage tank, and this storage tank is communicated with cylinder body, and intake valve includes a fixture and is fixedly arranged on storage tank, this fixture has a cross-drilled hole, the one depression bar fixture that stretches through movably, a spring is arranged between depression bar and storage tank diapire, when depression bar is subjected to external force pressure, depression bar relative fixed part produces displacement, can make gases at high pressure from joint in cross-drilled hole enters cylinder body.

4. the wheel cylinder adjuster with pressure relieving valve as claimed in claim 3 is characterized in that intake valve comprises a pressing plate in addition, and it is articulated in the lever side in order to oppress this depression bar.

5. the wheel cylinder adjuster with pressure relieving valve as claimed in claim 3 is characterized in that storage tank has a shoulder, fixture has a through hole, this through hole one end has a flange to be supported and to terminate in this shoulder, and depression bar has a stopper, in order to block the open end of through hole near shoulder and flange place.

6. the wheel cylinder adjuster with pressure relieving valve as claimed in claim 1, it is characterized in that, lever has one the 3rd air flue and is connected with cylinder body, and pressure relieving valve includes a fixture and is arranged at the 3rd air flue, this fixture has a perforation, one movable part is extended through perforation movably, one pressing piece combines with this movable part one end, one spring is arranged between pressing piece and the movable part, when pressing piece is subjected to external force pressure, movable part relative fixed part produces displacement, and gases at high pressure are discharged in the external world through perforation from cylinder interior.

7. the wheel cylinder adjuster with pressure relieving valve as claimed in claim 6 is characterized in that, movable part end in addition encircles in conjunction with an O shape, in order to intercept the pressure-air between perforation and cylinder body.

8. the wheel cylinder adjuster with pressure relieving valve as claimed in claim 6 is characterized in that, cylinder body first end has comprised one first fixture and one second fixture that combines with it, revolves between this first fixture and second fixture and establishes this stator.