CN103213571A

CN103213571A - Buffering brake push rod structure for vehicles

Info

Publication number: CN103213571A
Application number: CN2012100173054A
Authority: CN
Inventors: 陈德三
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-01-19
Filing date: 2012-01-19
Publication date: 2013-07-24

Abstract

The invention relates to a buffering brake push rod structure of vehicles, comprising a brake push rod, wherein one end of the brake push rod can be connected with a brake pedal, so that the other end of the brake push rod can push the push end (such as a piston) of a brake master cylinder when the brake pedal is stepped on. The buffering brake push rod structure is characterized in that the brake push rod is an oil cylinder, so when the brake action is carried out, an elastic buffered pedaling comfortable feeling can be generated, and the counter-acting force generated by directly compressing the oil cylinder space can be reduced. According to the buffering brake push rod structure, pedaling touch is better, resistance suffered during the brake instant is reduced, safety can be increased, the effect can be reached through the simple and easy installment, and the installment cost of a brake master cylinder device can be greatly reduced.

Description

The buffer-type brake push rod structure of vehicle

Technical field

The present invention is about a kind of buffer-type of vehicle brake push rod device, refers to a kind of shock absorber of the promote-side application of force for master cylinder especially.

Background technology

Vehicle is except that advancing, and one of important function is be able to accurately brake, the oil pressure design of the brake system of vehicle, main utilize " Pascal (Pascal) principle " and " the incompressible characteristic of liquid ".

The brake system of prior art sees also shown in Figure 5ly, mainly comprises a master cylinder 31, and the inner room at these master cylinder 31 rear portions is established a cylinder pressure space 32; An and brake push rod 33 that is linked to a brake pedal, the promote-side 34 of the termination of this brake push rod 33 and a master cylinder 31 for example piston is separated with a space D 1 each other, when stepping on brake pedal, interlock is somebody's turn to do the termination of brake push rod 33, fills up this space D 1, when continuing to step on brake pedal, this promote-side 34 is then pushed in the termination of this brake push rod 33, with the pressure of brake solution and brake solution, divide the wheel cylinder of delivering to each wheel, the wheel cylinder that promotes each wheel body then carries out the oil pressure start again.Then Lining is produced brake action for brake drum or brake disc.

Right this prior art, though the termination of this brake push rod 33 and this promote-side 34 are separated with the process of a space D 1 each other and can be used as buffering, therefore when stepping on brake pedal, there is the buffer distance of this space D 1 to be able to the buffering of exerting pressure to the brake solution in this master cylinder 31, push away to avoid the driver directly to be subjected to the counter of this brake solution resistance, and make driver's the brake application of force be subjected to the moment impedance and make that foot-operated sense of touch is not good, and be subjected to impedance in the moment of braking, will cause travel safety not good.But the problem of this prior art is, this space D 1 cushion space, enter the resistance space of powerful brake solution by unresisted space almost, though therefore both have distance as buffering, but in the suffered impedance of the application of force, it is very big still to form drop, so this buffering effect is limited, and the driver of vehicle is not good for the foot-operated sense of touch of footbrake pedal, and then influences traffic safety.

Summary of the invention

Because the problem of prior art, the present inventor thinks should a kind of structure of improvement, this designs a kind of buffer-type brake push rod structure of vehicle edge, comprise a brake push rod, this brake push rod one end can be for being linked to a brake pedal, be used to be able to when brake pedal is stepped on the promote-side (as piston) that the other end promotes a master cylinder, the main characteristic of the present invention is that this brake push rod is an oil hydraulic cylinder, and the oil circuit of this oil hydraulic cylinder forms and can be communicated with the brake fluid line of this master cylinder.And this oil hydraulic cylinder comprises a push rod cylinder, and this push rod cylinder is in the brake direction of propulsion is defined as, and inside is provided with first to fourth stage room from inside to outside in regular turn, and holds in regular turn: one first spring; One brake push-rod piston: this first spring of end surfaces, axially establish an oil duct, allow that the brake solution of master cylinder enters; One fuel tap bar: end surfaces is somebody's turn to do the brake push-rod piston; And one section portion of this fuel tap bar establishes a flange; Establish one second spring between this flange and this brake push-rod piston; One lining: be sheathed on this fuel tap bar outer rim.

By this when stepping on brake pedal, interlock is somebody's turn to do the termination of brake push rod, because brake push rod of the present invention is an oil hydraulic cylinder, and the oil circuit of this oil hydraulic cylinder forms and can be communicated with the brake fluid line of this master cylinder, by of the impedance of this oil hydraulic cylinder to this brake fluid line, after overcoming this impedance, when continuing to step on brake pedal, this promote-side just can be pushed in the termination of this brake push rod, pressure with brake solution and brake solution, divide the wheel cylinder of delivering to each wheel, the wheel cylinder that promotes each wheel body then carries out the oil pressure start again.

Then Lining is produced brake action for brake drum or brake disc.Therefore in the time of brake being carried out, the foot-operated comfort of an elastic buffer is arranged, and reduce the antagonistic force that is produced is directly suppressed in this cylinder pressure space.Make that foot-operated sense of touch is preferable, and reduce brake moment and be subjected to impedance, and improving safety, and utilize simple and easy installing can reach aforementioned effect, significantly reduced the cost of master cylinder device installing.

Description of drawings

Fig. 1 is the brake three-dimensional exploded view of push rod of the present invention

Fig. 2 is the brake section plan of the local combination of push rod and master cylinder of the present invention

Fig. 3 is the present invention's push rod combined planar cutaway view that brakes

Fig. 4 is an illustrative view of the present invention

Fig. 5 is the prior art combination dissected figure

The figure number explanation:

(1). the brake push rod

(11). the push rod cylinder

(1A). the F/s room

(1B). the subordinate phase room

(1C). the phase III room

(1D). quadravalence section room

(12). first spring

(13). the brake push-rod piston

(131). oil duct

(14). the fuel tap bar

(141). flange

(142). second spring

(15). lining

(151). first annular groove

(152). the first O type ring

(153). second annular groove

(154). the second O type ring

(155). flange

(156). the 3rd O type ring

(157). support circle

(158). the 3rd spring

(159) .C type pad

(2). master cylinder

(21). the promote-side

(31). master cylinder

(32). the cylinder pressure space

(33). the brake push rod

(34). the promote-side

(D1). spacing.

The specific embodiment

See also Fig. 1, cooperate shown in Figure 3ly, the present invention comprises a brake push rod 1 about a kind of buffer-type of vehicle brake push rod structure.

These brake push rod 1 one ends can be for being linked to a brake pedal (figure does not show), be used to be able to when brake pedal is stepped on the promote-side 21 of other end promotion one master cylinder 2 as shown in Figure 2, this promote-side 21 can be a piston, and the main characteristic of the present invention is that this brake push rod 1 is an oil hydraulic cylinder.

Cooperate Fig. 1 and shown in Figure 3, this oil hydraulic cylinder preferred embodiment of the present invention comprises a push rod cylinder 11, and this push rod cylinder 11 is in the brake direction of propulsion is defined as, and inside is provided with first to

fourth stage room

1A, 1B, 1C, 1D from inside to outside in regular turn, and holds in regular turn:

One first spring 12: for elastic buffer with and auxiliary fuel tap bar 14 described later push the outside (as shown in Figure 3) to.

One brake push-rod piston 13: this first spring 12 of end surfaces, axially establish an oil duct 131, allow that the brake solution of master cylinder 2 enters.

One fuel tap bar 14: end surfaces is somebody's turn to do brake push-rod piston 13; And 14 1 sections portions of this fuel tap bar establish a flange 141; Establish one second spring 142 between this flange 141 and this brake push-rod piston 13.

One lining 15: be sheathed on this fuel tap bar 14 outer rims.

See also shown in Figure 4, by this when stepping on brake pedal when (figure does not show), interlock is somebody's turn to do the termination of brake push rod 1, because brake push rod 1 of the present invention is an oil hydraulic cylinder, and this oil duct 131 allows that the brake solution of master cylinder 2 enters and makes the oil circuit of oil hydraulic cylinder can be communicated with the brake fluid line formation of this master cylinder 2.

And these fuel tap bar 14 ecto-entads are to the impedance of this brake fluid line, after overcoming this impedance, when continuing to step on brake pedal, this brake push rod 1 can be pushed this promote-side 21, pressure with brake solution and brake solution, divide the wheel cylinder of delivering to each wheel, the wheel cylinder that promotes each wheel body then carries out the oil pressure start again.

Embodiments of the invention, wherein these lining 15 inner edges are provided with one first annular groove 151, and this first annular groove 151 be embedded with one the one O type ring 152 with anti-blocking brake solution to external leakage.

Better embodiment, these lining 15 outer rims more are provided with one second annular groove 153, and this second annular groove 153 is embedded with one the 2nd O type ring 154, more can anti-blocking brake solution to external leakage.

This lining 15 of the present invention again more forms a flange 155, and these flange 155 inboards establish one the 3rd O type ring 156, forms careful anti-blocking to external leakage to brake solution again.

Embodiments of the invention more can be established one in these flange 155 outsides and support circle 157, and should establish one the 3rd spring 158 to

circle

157 and 155 of this flanges, and more increase the effect of elastic buffer.Should support circle 157 outsides again and establish a C type pad 159, support circle 157 slippages in order to prevent this.

Claims

1. the buffer-type of vehicle brake push rod is constructed, comprise a brake push rod, this brake push rod one end can be for being linked to a brake pedal, be used to be able to when brake pedal is stepped on the promote-side that the other end promotes a master cylinder, it is characterized in that: this brake push rod is an oil hydraulic cylinder, and the oil circuit of this oil hydraulic cylinder forms and can be communicated with the brake fluid line of this master cylinder, and this oil hydraulic cylinder comprises a push rod cylinder, this push rod cylinder is in the brake direction of propulsion is defined as, inside is provided with first to fourth stage room from inside to outside in regular turn, and holds in regular turn:

One first spring:

One brake push-rod piston: this first spring of end surfaces, axially establish an oil duct, allow that the brake solution of master cylinder enters;

One fuel tap bar: end surfaces is somebody's turn to do the brake push-rod piston; And one section portion of this fuel tap bar establishes a flange; Establish one second spring between this flange and this brake push-rod piston;

One lining: be sheathed on this fuel tap bar outer rim.

2. the buffer-type of vehicle as claimed in claim 1 brake push rod structure it is characterized in that this lining inner edge is provided with one first annular groove, and this first annular groove is embedded with one the one O type ring.

3. the buffer-type of vehicle as claimed in claim 1 brake push rod structure it is characterized in that this lining outer rim more is provided with one second annular groove, and this second annular groove is embedded with one the 2nd O type ring.

4. the buffer-type of vehicle as claimed in claim 1 brake push rod structure it is characterized in that this lining more forms a flange, and this flange inner is established one the 3rd O type ring.

5. the buffer-type of vehicle as claimed in claim 4 brake push rod structure is characterized in that, this flange outer sides is established one and supported circle, and should support between circle and this flange and establish one the 3rd spring.

6. the buffer-type of vehicle as claimed in claim 5 brake push rod structure is characterized in that, should support the circle outside and establish a C type pad.