阅读说明：本技术 一种汽车制动低压大容积蓄能器 (Automobile brake low-pressure large-volume energy accumulator ) 是由 刘伟 薛奕佳 张致兴 吴志强 于 2020-12-31 设计创作，主要内容包括：本发明公开了一种汽车制动低压大容积蓄能器,包括活塞、复位弹簧和封盖结构,封盖结构包括盖帽和封盖筒体,封盖筒体与上部的盖帽连接,活塞容纳在封盖筒体内,活塞内部开有放置复位弹簧的容纳槽,复位弹簧下部放置在活塞的容纳槽内,复位弹簧上部卡接在盖帽内,活塞外壁沿圆周方向开有环形槽,环形槽内安装密封圈。活塞在封盖筒体内孔滑动,在不改变铝块孔宽度的情况下,活塞运动行程较原有方案加大,有效提升了低压蓄能器容积。液压阀块上不用加长蓄能器活塞孔,降低了加工费用；阀块体积可减小。(The invention discloses an automobile brake low-pressure large-volume energy accumulator which comprises a piston, a return spring and a sealing cover structure, wherein the sealing cover structure comprises a cap and a sealing cover cylinder, the sealing cover cylinder is connected with the cap at the upper part, the piston is accommodated in the sealing cover cylinder, an accommodating groove for accommodating the return spring is formed in the piston, the lower part of the return spring is arranged in the accommodating groove of the piston, the upper part of the return spring is clamped in the cap, an annular groove is formed in the outer wall of the piston along the circumferential direction, and a sealing ring is arranged in the annular groove. The piston slides in the closing cap barrel hole, under the condition that does not change aluminium pig hole width, piston motion stroke strengthens than original scheme, has effectively promoted the low pressure energy storage ware volume. The hydraulic valve block does not need to lengthen the piston hole of the energy accumulator, thus reducing the processing cost; the valve block volume can be reduced.)

1. The utility model provides a big volume accumulator of car braking low pressure which characterized in that: including piston (3), reset spring (2) and closing cap structure, the closing cap structure includes closing cap (1) and closing cap barrel (4), closing cap barrel (4) are connected with closing cap (1) on upper portion, closing cap (1) and closing cap barrel (4) form a holistic tubular structure, piston (3) hold in closing cap barrel (4), piston (3) inside is opened holding tank (5) of placing reset spring (2), place in holding tank (5) of piston (3) return spring (2) lower part, reset spring (2) upper portion joint is in closing cap (1), piston (3) outer wall is opened along the circumferencial direction has ring channel (6), installation sealing washer (7) in ring channel (6).

2. The vehicle brake low pressure large volume accumulator of claim 1, wherein: an upper limiting bulge (8) is arranged in the cover cap (1).

3. The vehicle brake low pressure large volume accumulator of claim 1, wherein: the bottom of holding tank (5) is provided with down spacing arch (9).

4. The vehicle brake low pressure large volume accumulator of claim 1, wherein: and a flange (10) is arranged on the side wall of the sealing cover cylinder body (4).

5. The vehicle brake low pressure large volume accumulator of claim 1, wherein: the bottom surface of the cap (1) is provided with an air hole (11).

Technical Field

The invention relates to a low-pressure energy accumulator, in particular to an automobile braking low-pressure large-volume energy accumulator.

Background

In the energy accumulator piston for automobile braking in the prior art, a plastic piston 3 ' provided with an O-shaped ring 4 ' moves in a piston 3 ' hole under the action of pressure, a reset spring 2 ' resets the piston, and an aluminum block is extruded to form a fixed sealing cover 1 '.

The original piston moves in the aluminum block hole, the size of the aluminum block hole 5' is limited, and the stroke is also limited. For designing a large-volume energy accumulator, the length of an aluminum block is generally required to be increased, so that the displacement of a piston is increased, and the production cost is increased.

Disclosure of Invention

In order to solve the technical problem, the invention provides an automobile brake low-pressure large-volume energy accumulator with a large volume.

The invention provides the following technical scheme:

the utility model provides a big volume energy storage ware of car braking low pressure, includes piston, reset spring and closing cap structure, the closing cap structure includes block and closing cap barrel, the closing cap barrel is connected with the block on upper portion, block and closing cap barrel form a holistic tubular structure, the piston holds in the closing cap barrel, the piston is inside to be opened there is the holding tank of placing reset spring, the reset spring lower part is placed in the holding tank of piston, reset spring upper portion joint is in the block, the piston outer wall is opened along the circumferencial direction has the ring channel, install the sealing washer in the ring channel.

Furthermore, the cap is internally provided with an upper limiting bulge.

Further, the bottom of holding tank is provided with down spacing arch.

Furthermore, a flange is arranged on the side wall of the sealing cover cylinder body.

Furthermore, the bottom surface of the cap is provided with air holes.

Compared with the prior art, the invention has the beneficial effects that: the piston slides in the closing cap barrel hole, under the condition that does not change aluminium pig hole width, piston motion stroke strengthens than original scheme, has effectively promoted the low pressure energy storage ware volume. The hydraulic valve block does not need to lengthen the piston hole of the energy accumulator, thus reducing the processing cost; the valve block volume can be reduced.

Drawings

Fig. 1 is a schematic diagram of a prior art accumulator.

FIG. 2 is a schematic view of the structure of the present invention.

Fig. 3 is a schematic view of the closure structure of the present invention.

In the figure: 1. capping; 2. a return spring; 3. a piston; 4. closing the cylinder body; 5. accommodating grooves; 6. an annular groove; 7. a seal ring; 8. an upper limiting bulge; 9. a lower limiting bulge; 10. a flange; 11. air holes are formed; 12. and (4) aluminum block holes.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 2-3, the automobile brake low-pressure large-volume energy accumulator of the present invention includes a piston 3, a return spring 2 and a sealing structure, wherein the sealing structure includes a cap 1 and a sealing cylinder 4, the sealing cylinder 4 is connected with the cap 1 at the upper portion, the cap 1 and the sealing cylinder 4 form an integral cylindrical structure, the piston 3 is accommodated in the sealing cylinder 4, an accommodating groove 5 for accommodating the return spring 2 is formed in the piston 3, the lower portion of the return spring 2 is arranged in the accommodating groove 5 of the piston 3, the upper portion of the return spring 2 is clamped in the cap 1, an annular groove 6 is formed in the outer wall of the piston 3 along the circumferential direction, and a sealing ring 7 is installed in the annular groove 6.

The cap 1 is internally provided with an upper limiting bulge 8. The bottom of holding tank 5 is provided with lower spacing arch 9. The upper limiting bulge and the lower limiting bulge are used for mounting, supporting and positioning the spring.

The side wall of the cover cylinder body 4 is provided with a flange 10. The whole seal cover cylinder body 4 is arranged in an aluminum block hole 12 of a hydraulic valve block of an automobile braking system, and the seal cover structure is fixed by extrusion molding of an aluminum block.

The bottom surface of the cap 1 is provided with an air hole 11. Air is discharged through the air holes 11 in the piston compression process, and the piston pressure is reduced.

In the prior art, the sealing cover is an independent part and is positioned above the piston and used for fixing the spring, and the piston directly moves up and down in an aluminum block hole of the hydraulic valve block. In the invention, the sealing cover is made into a cylinder body which can contain the piston 3 and provide a moving space for the piston 3, and under the condition that the width of the aluminum block hole is not changed, the piston 3 moves up and down in the cylinder body, and the up-and-down stroke is increased.

According to the formula: volume = area stroke, stroke = piston displacement,

area = piston diameter squared pi/4.

This results in a large volume of the low-pressure accumulator.

The sealing cover structure and the aluminum block hole of the hydraulic valve block are fixed by extrusion molding of materials.

In the initial state, the bottom surface of the piston 3 is in contact with the bottom surface of the corresponding hole of the hydraulic valve block due to the action of the return spring 2, and the accumulator does not store any solution. When the brake wheel cylinder is depressurized, the oil pressure overcomes the reset spring force acting on the bottom surface of the piston to push the piston to move, and when the upper part of the piston is contacted with the bottom of the cover cap 1, the storage volume of the energy accumulator reaches the maximum. As the oil stored in the accumulator is pumped out by the plunger pump, the pressure of the solution in the accumulator decreases and the piston moves downward under the force of the spring.

The piston 3 slides in the inner hole of the cover cylinder 4, and the movement stroke of the piston 3 is increased compared with the original scheme under the condition of not changing the width of the aluminum block hole, so that the volume of the low-pressure energy accumulator is effectively increased. The hydraulic valve block does not need to lengthen the piston hole of the energy accumulator, thus reducing the processing cost; the valve block volume can be reduced.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.