CN2325275Y

CN2325275Y - Anti blocking arrangement for automobile

Info

Publication number: CN2325275Y
Application number: CN 98203327
Authority: CN
Inventors: 林炳义
Original assignee: Individual
Current assignee: Individual
Priority date: 1998-04-14
Filing date: 1998-04-14
Publication date: 1999-06-23
Anticipated expiration: 2008-04-14

Abstract

The utility model relates to an anti-blocking device for vehicle brake, which is arranged on oil circuits or gas circuits of vehicles service brake oil pressure or air pressure brake, comprising a magnetic valve in special design whose coil circuits form circuits with a pressure switch, a fly ball speed switch, a bell type vibration switch and a vehicles storage battery. When the electromagnet of the magnetic valve is charged, the anti-blocking system for vehicle brake sucks valve cores to make downward movements and close oil inlet. The lower end of the electromagnet is provided with the bell type vibration switch whose upper contact and lower contact always keep closed. After the electromagnet is charged, the upper contact and the lower contact of the bell type vibration switch keep away, switching off. The anti-blocking device for vehicle brake has simple structure and can better solve problems of locking wheels in braking and increase stability of the brake to prevent sliding, which is safe and reliable.

Description

The automotive anti-lock braking device

The utility model relates to the automobile brake structure, and concrete is a kind of automotive anti-lock braking device.

Automobile generally uses oil (gas) compacting moving, the chaufeur pin is stepped on brake equipment and is compressed brake wheel realization braking by the hydraulic operation brake shoe brake cheek, the pressure of this brake shoe brake cheek is crossed conference with wheel lockup, cause braking unstable, produce and break away, can make automobile whipping occur when skid is serious, reverse end for end, fall accidents such as ditch or overturning.Existing brake anti-lock device, the complex structure that has, difficult popularizing, though the structure that has is simple, effect is relatively poor.

The purpose of this utility model provides a kind of automotive anti-lock braking device, and is simple in structure, can solve the problem of locking tire in the braking preferably, and it is stable to increase braking, prevents to break away, safe and reliable.

The purpose of this utility model is achieved in that

A kind of automotive anti-lock braking device, be installed on the oil circuit/gas circuit of automobile service brake oil pressure/compression air brake brake, it is characterized in that: this brake anti-lock device comprises the electromagnetic valve of a particular design, and the coil circuit of this electromagnetic valve and electric bell formula vibroswitch, pressure switch, flyball speed switch and automobile storage battery are formed the loop;

Described electromagnetic valve comprises that one is contained in the spool in the body cavity, this spool is the ladder cylinder that upper and lower circular cone sealing surface is arranged, its upper end circular cone sealing surface opens and closes the return opening that is communicated with the pressure chamber, its lower end circular cone sealing surface opens and closes the oil inlet of service brake oil circuit, be set with compression spring on the little ladder post of spool between spool terrace and the valve body oil inlet end face, this spring makes spool upper end circular cone sealing surface carry out normally closed sealing to return opening;

In valve body lower end the electromagnet that is made of magnet coil and iron core is housed, the suction movable valve plug moves down oil inlet is closed during this electromagnet energising;

Electric bell formula vibroswitch is equipped with in described electromagnet lower end, be contained on the elastic support to the upper contact insulation of this switch, between this elastic support and the electromagnet compression spring is housed and makes the upper contact of this switch and lower contact keep normally closed, electromagnetic attraction overcomes spring force and makes the upper and lower contact of this switch leave outage in electromagnet energising back;

At the oil outlet pipe that leads to brake of drawing pressure switch open in usual is housed from the body cavity middle part;

Be provided with the rubber membrane cover and the energy variable volume in the pressure chamber, this pressure chamber is provided with oil return pipe and is communicated with the service brake fuel feed pipe, check valve is housed on this oil return pipe prevents that fuel feeding from entering the pressure chamber from oil return pipe.

Described flyball speed switch is connected in the driving system of wheel, being configured to of this flyball switch: the rotating fulcrum of flyball is connected in support, this support is connected in rotating shaft, rotating shaft is connected in runner, the galianconism of flyball is supporting the bottom surface of pillar, this pillar is contained in the sleeve pipe of housing and slidably, wire guide plate is being supported with steel ball in top at pillar, this wire guide plate becomes removable with shell and is connected, insulation ground is connecting the upper contact of switch on the wire guide plate, this wire guide plate by compression spring effect and make the upper contact and lower contact maintenance normally off of switch.

The utility model has following actively useful effect:

1. anti-wheel lockup, the anti-sideslip;

2. strengthen insensitivity, cost-cutting;

3. the no matter normal braking or the brake of breaking down can both reach the standard braking effect, and be safe and reliable.

4. oil pressure vibroswitch speed is fast, and the pressure fluctuation amplitude is little.

Now in conjunction with the accompanying drawings:

Fig. 1 is an electrical schematic diagram of the present utility model;

Fig. 2 is the electromagnetic valve among Fig. 1, the structural representation of electric bell formula vibroswitch;

Fig. 3 is the structural representation of the flyball rotating switch among Fig. 1.

Accompanying drawing number:

1. electromagnetic valve 101. spools 102. spools upper ends circular cone sealing surface

103. spool lower end circular cone sealing surface 104. springs

105. coil 106. iron cores 107. valve bodies

108. pressure chamber's 109. oil returns 110. rubber diaphragm inner bags

111. oil return pipe 112. check valves

2. electric bell formula vibroswitch 201. switch upper contacts

202. switch lower contact 203. supports 204. springs

3. pressure switch

4. flyball speed switch

401. flyball 402. rotating fulcrums 403. supports

404. rotating shaft 405. runners 406. flyball galianconism

407. pillar 408. housings 409. sleeve pipes

410. wire guide plate 411. switch upper contacts

412. switch lower contact 413. springs

5. the fuel feed pipe on the oil of service brake braking brake (gas) road

501. the oil outlet pipe that leads to brake that oil inlet 6. is drawn from body cavity

7. wire fuse 8. storage batterys

Automotive anti-lock braking device of the present utility model, be installed on the oil circuit/gas circuit 5 of automobile service brake oil pressure/compression air brake brake, please refer to Fig. 1, this brake anti-lock device comprises the electromagnetic valve 1 of a particular design, the coil circuit of this electromagnetic valve and electric bell formula vibroswitch 2, flyball speed switch 4, pressure switch 3 and automobile storage battery 8 are formed the loop;

Please refer to Fig. 2, described electromagnetic valve 1 comprises that one is contained in the spool 101 in the body cavity, this spool is the ladder cylinder that upper and lower circular cone sealing surface is arranged, 102 pairs of oil returns 109 that are communicated with pressure chamber 108 of its upper end circular cone sealing surface open and close, the oil inlet 501 of 103 pairs of service brake oil circuits 5 of its lower end circular cone sealing surface opens and closes, be set with compression spring 104 on the terrace of spool 101 and the little ladder post of spool between the valve body oil inlet end face, this spring makes the normally closed sealing of 102 pairs of oil returns of circular conical surface, 109 implementations on the spool;

In valve body lower end the electromagnet that is made of magnet coil 105 and iron core 106 is housed, suction movable valve plug 101 moves down oil-feed 501 is closed during this electromagnet energising;

Electric bell formula vibroswitch 2 is equipped with in described electromagnet lower end, be contained on the elastic support 203 to upper contact 201 insulation of this switch, compression spring 204 is housed between this elastic support and the electromagnet and makes the upper contact 201 of this switch and lower contact 202 keep normally closed, electromagnetic attraction overcomes spring force and makes the upper and lower contact of this switch leave outage in electromagnet energising back;

At the oil outlet pipe 6 of drawing from the body cavity middle part pressure switch 3 open in usual is housed, described pressure switch can be used prior art;

Be provided with rubber diaphragm inner bag 110 and the energy variable volume in the pressure chamber, this pressure chamber 108 is provided with oil return pipe 111 and is communicated with service brake fuel feed pipes 5, check valve 112 is housed on this oil return pipe 111 prevents that fuel feeding from entering pressure chamber 108 from oil return pipe 111.

Please refer to Fig. 3, described flyball speed switch 4 is connected in wheel, being configured to of this flyball switch: the rotating fulcrum 402 of flyball 401 is connected in support 403, this support 403 is connected in rotating shaft 404, rotating shaft is connected in runner 405, the galianconism 406 of flyball is supporting the bottom surface of pillar 407, this pillar is contained in the sleeve pipe 409 of housing 408 and slidably, wire guide plate 410 is being supported with steel ball in top at pillar, 408 one-tenth removable connections of this wire guide plate and shell, insulation ground is connecting the upper contact 411 of switch on the wire guide plate 410, the effect of spring 413 by compression on this wire guide plate and make the upper contact and lower contact 412 maintenance normally offs of switch.

Principle of work of the present utility model:

During the vehicle sudden stop, wheel flyball rotating speed reduces, when dropping to specified value, and the flyball switch connection, pressure reaches standard in the pressure switch, pressure switch is connected, and electric bell formula electromagnetic switch is started working, during the oil circuit switch opens, high pressure oil enters the pressure chamber, brake pressure descends, and wheel can not locking, and rotating speed raises.Vehicle wheel rotational speed raises and drives the rising of flyball rotating speed, the flyball switch opens, circuitry cuts, the oil circuit switch cuts out, open through repeatedly (limited), behind the pass, the brake solution that enters the pressure chamber increases, and pressure is heightened, and reaches former brake requirement, switch is ineffective, promptly reply former car braking, during brake, when one way switch cuts out releasing of brake in the counter flow pipe under pressure, one way switch is opened under pressure chamber's effect, brake solution flows back to, because oil circuit switch vibration velocity is fast, the pressure fluctuation amplitude is little, make brake more steady, no matter normal braking or this device break down and can both guarantee to reach the standard braking effect, so safe and reliable, pressure chamber's inner chamber can be made inner bag with rubber, and be installed into air valve, oil circuit switch gear room shell can be with copper or aluminum, and the oil circuit switch can and be in the same place with pressure switch, and each flyball switch is connected to wheel.

Claims

1. automotive anti-lock braking device, be installed on the oil circuit/gas circuit of automobile service brake oil pressure/compression air brake brake, it is characterized in that: this brake anti-lock device comprises the electromagnetic valve of a particular design, and the coil circuit of this electromagnetic valve and electric bell formula vibroswitch, pressure switch, flyball speed switch and automobile storage battery are formed the loop;

2. automotive anti-lock braking device as claimed in claim 1, it is characterized in that: described flyball speed switch is connected in the driving system of wheel, being configured to of this flyball switch: the rotating fulcrum of flyball is connected in support, this support is connected in rotating shaft, rotating shaft is connected in runner, the galianconism of flyball is supporting the bottom surface of pillar, this pillar is contained in the sleeve pipe of housing and slidably, wire guide plate is being supported with steel ball in top at pillar, this wire guide plate becomes removable with shell and is connected, insulation ground is connecting the upper contact of switch on the wire guide plate, this wire guide plate by compression spring effect and make the upper contact and lower contact maintenance normally off of switch.