Brake wheel cylinder with self-adjusting clamp spring in piston

Abstract

The utility model relates to the technical field of automobile parts, and discloses a brake wheel cylinder with a self-adjusting clamp spring in a piston, which comprises a cylinder body, two symmetrical movable plug blocks are slidably arranged in the cylinder body, the adjacent sides of the two movable plug blocks are fixedly connected with sliding blocks, the tops of the two sliding blocks are fixedly connected with limiting clamp strips, and the limiting clamp strips are fixedly connected with the piston. Two symmetrical connecting pieces are fixedly connected to the interior of the cylinder body, a square block is fixedly connected between the two connecting pieces, T-shaped sliding grooves are formed in the bottom of an inner cavity of the square block, and the two limiting clamping strips and the two sliding blocks are slidably arranged in the two T-shaped sliding grooves correspondingly; the two movable plug blocks can slide in a reciprocating mode in cooperation with hydraulic pressure through the elasticity of the tension spring, lifting of the lifting block is achieved through synchronous sliding of the two sliding blocks and rotation of the two rotating blocks, and therefore the elasticity of the two springs is used for being matched with the tension spring to conduct elastic adjustment, and the service life of the tension spring is prolonged; and the tension spring can be automatically and elastically adjusted back conveniently.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile parts, in particular to a brake wheel cylinder with a self-adjusting retaining spring in a piston. Background Art

[0002] The wheel cylinder is a key component in the automotive braking system, commonly used in commercial vehicles and some heavy machinery. Its main function is to convert the hydraulic pressure in the braking system into mechanical force, thereby pushing the brake shoe or brake pad tightly against the brake drum or brake disc to achieve vehicle deceleration or parking.

[0003] When the existing brake wheel cylinder is in use, the brake device is controlled by the sliding of two pistons through the change of hydraulic pressure, and the return of the two pistons is achieved by a retaining spring. However, since a single retaining spring is generally arranged inside and the piston slides frequently, the retaining spring may easily fail to elastically return due to long-term reciprocating movement.

[0004] Therefore, it is necessary to design a brake wheel cylinder with a self-adjusting retaining spring in the piston to solve the above problems. Utility Model Content

[0005] The utility model aims to provide a brake wheel cylinder with a self-adjusting retaining spring in a piston, so as to solve the technical problems raised in the above-mentioned background technology.

[0006] In order to achieve the above-mentioned purpose, the utility model provides the following technical solution: a brake wheel cylinder with a self-adjusting retaining spring in a piston, comprising a cylinder body, two symmetrical movable plugs are slidably arranged inside the cylinder body, and adjacent sides of the two movable plugs are fixedly connected to sliders, and the tops of the two sliders are fixedly connected to limit clamping strips, two symmetrical connecting pieces are fixedly connected inside the cylinder body, a square-shaped block is fixedly connected between the two connecting pieces, a T-shaped slide groove is opened at the bottom of the inner cavity of the square-shaped block, and the two limit clamping strips and the two sliders are respectively slidably arranged on the two T shaped slide groove, two symmetrical sliding openings are opened at the bottom of the U-shaped block, the bottoms of the two sliding blocks are fixedly connected with U-shaped blocks, the two U-shaped blocks are slidably arranged inside the two sliding openings, and the bottoms of the two U-shaped blocks are rotatably connected with a rotating shaft, and the two rotating shafts are sleeved with rotating blocks, the bottom ends of the two rotating shafts are rotatably sleeved with another rotating shaft, and the two rotating shafts at the bottom are jointly sleeved with a lifting block, the bottom of the lifting block is fixedly connected with two symmetrical springs, and a tension spring is fixedly connected between the two movable plugs.

[0007] Preferably, both sides of the cylinder body are covered with dust covers, and the top of the lifting block is provided with a square groove, and both ends of the two rotating blocks are rotatably arranged inside the square groove.

[0008] Preferably, the bottom of the square groove is fixedly connected to a limiting column, and the top of the limiting column passes through the top of the U-shaped block, and the top of the U-shaped block is fixedly connected to a limiting plate.

[0009] Preferably, the limiting column is arranged between the two rotating blocks and the two sliding blocks, and the bottom of the limiting piece is fitted with the top of the square-shaped block.

[0010] Preferably, one end of the two movable plugs is provided with a groove, and the inside of the two grooves are provided with a sealing ring that fits the inner cavity of the cylinder body.

[0011] Preferably, the tension spring is located directly above the U-shaped block, and the U-shaped block and the lifting block are both located between two movable plugs, and the length of the lifting block is smaller than the length of the U-shaped block.

[0012] Compared with the prior art, the technical solution provided by the utility model has the following beneficial effects:

[0013] The utility model arranges a tension spring and utilizes the elasticity of the tension spring to enable the two movable plugs to slide back and forth in cooperation with the hydraulic pressure, and the synchronous sliding of the two sliding blocks and the rotation of the two rotating blocks are utilized to realize the lifting and lowering of the lifting block, thereby utilizing the elasticity of the two springs to cooperate with the tension spring for elastic adjustment, thereby increasing the service life of the tension spring and facilitating the automatic elastic adjustment of the tension spring. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the utility model;

[0015] Figure 2 It is a schematic diagram of the cylinder structure decomposition of the utility model;

[0016] Figure 3 This is a schematic diagram of the decomposition of the U-shaped block structure of the utility model;

[0017] Figure 4 This is a schematic diagram of the U-shaped block structure of the utility model;

[0018] In the figure: 1. cylinder body; 2. movable plug; 3. dust cover; 4. tension spring; 5. U-shaped block; 6. limit plate; 7. connecting plate; 8. limit column; 9. slider; 10. limit card strip; 11. U-shaped block; 12. rotating block; 13. spring; 14. lifting block; 15. rotating shaft; 16. sealing ring; 17. square groove. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0020] Obviously, many specific details are set forth in the following description to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments of the following disclosure.

[0021] See also Figure 1-4 The utility model provides a wheel brake cylinder with a self-adjusting retaining spring in a piston, comprising a cylinder body 1, wherein two symmetrical movable plugs 2 are slidably arranged inside the cylinder body 1, and a slider 9 is fixedly connected to the adjacent sides of the two movable plugs 2, and the tops of the two sliders 9 are fixedly connected to limit clamping strips 10, and two symmetrical connecting pieces 7 are fixedly connected inside the cylinder body 1, and a square-shaped block 5 is fixedly connected between the two connecting pieces 7, and a T-shaped slide groove is opened at the bottom of the inner cavity of the square-shaped block 5, and the two limit clamping strips 10 and The two sliders 9 are respectively slidably arranged inside the two T-shaped slide grooves, and the bottom of the square-shaped block 5 is provided with two symmetrical sliding openings. The bottoms of the two sliders 9 are fixedly connected with U-shaped blocks 11, and the two U-shaped blocks 11 are slidably arranged inside the two sliding openings. The bottoms of the two U-shaped blocks 11 are rotatably connected with a rotating shaft 15, and the two rotating shafts 15 are sleeved with rotating blocks 12, and the bottom ends of the two rotating shafts 15 are rotatably sleeved with another rotating shaft 15, and the two rotating shafts at the bottom are connected to the rotating shaft 15. The rotating shaft 15 is jointly sleeved with a lifting block 14, and two symmetrical springs 13 are fixedly connected to the bottom of the lifting block 14. A tension spring 4 is fixedly connected between the two movable plugs 2. When the cylinder body 1 pushes the two movable plugs 2 to the two sides of the cylinder body 1 through hydraulic pressure and stretches the tension spring 4, it retracts through the elasticity of the tension spring 4, so as to utilize reciprocating sliding to realize the braking work of the braking device. While the reciprocating elastic work of the tension spring 4 is in progress, the two movable plugs 2 slide while sliding, through the sliding of the two sliders 9 and the limiting of the two limiting strips 10, so as to utilize the sliding of the two U-shaped blocks 11 to drive the two rotating blocks 12 to rotate. Through the rotation of the two rotating blocks 12, by pulling the lifting block 14 to rise and fall, the reciprocating expansion and contraction of the two springs 13 is utilized to further cooperate with the reciprocating contraction of the tension spring 4, so as to avoid the reciprocating operation of a single tension spring 4, so that the tension spring 4 is prone to elastic failure, thereby sharing and adjusting the elastic force of the tension spring 4, thereby increasing the service life of the tension spring 4, that is, the service life of the device.

[0022] In order to provide dustproof work for both sides of the cylinder body 1, and at the same time, to facilitate the rotation of the two rotating blocks 12 to drive the lifting block 14 to rise and fall, dustproof sleeves 3 are provided on both sides of the cylinder body 1, and a square groove 17 is opened on the top of the lifting block 14, and the two ends of the two rotating blocks 12 are rotatably set inside the square groove 17.

[0023] Furthermore, in order to ensure stable lifting of the lifting block 14 , the bottom of the square groove 17 is fixedly connected to the limiting column 8 , and the top of the limiting column 8 passes through the top of the U-shaped block 5 , and the top of the U-shaped block 5 is fixedly connected to the limiting plate 6 .

[0024] Furthermore, when the lifting block 14 is lifted or lowered, a limit column 8 is set to facilitate the lifting and lowering stability of the lifting block 14. In order to prevent the setting of the limit column 8 from affecting the rotation of the two rotating blocks 12, the limit column 8 is set between the two rotating blocks 12 and the two sliders 9, and the bottom of the limit plate 6 is in contact with the top of the U-shaped block 5.

[0025] In order to improve the sealing performance of the cylinder body 1 when the two movable plugs 2 slide, a groove is formed at one end of each of the two movable plugs 2, and a sealing ring 16 that fits the inner cavity of the cylinder body 1 is sleeved inside the two grooves.

[0026] When the two movable plugs 2 slide, in order to improve the use of the tension spring 4, a lifting block 14 and a spring 13 are set. In order to prevent the setting of the tension spring 4 and the lifting block 14 from affecting the sliding of the two movable plugs 2, the tension spring 4 is located directly above the U-shaped block 5, and the U-shaped block 5 and the lifting block 14 are both located between the two movable plugs 2, and the length of the lifting block 14 is less than the length of the U-shaped block 5.

[0027] The preferred embodiments of the present invention are described in detail above in conjunction with the accompanying drawings. However, the present invention is not limited to the specific details in the above embodiments. Within the technical concept of the present invention, the technical solution of the present invention can be subjected to a variety of simple modifications, and these simple modifications all belong to the protection scope of the present invention.

[0028] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present utility model will not further describe various possible combinations.

[0029] In addition, various embodiments of the present invention may be arbitrarily combined, and as long as they do not violate the concept of the present invention, they should also be regarded as the contents disclosed by the present invention.

Claims

1. A wheel brake cylinder with a self-adjusting retaining spring in a piston, comprising a cylinder body (1), characterized in that: Two symmetrical movable plugs (2) are slidably arranged inside the cylinder body (1), and a slider (9) is fixedly connected to the adjacent side of the two movable plugs (2), and the tops of the two sliders (9) are fixedly connected to limit clamping strips (10). Two symmetrical connecting pieces (7) are fixedly connected inside the cylinder body (1), and a square-shaped block (5) is fixedly connected between the two connecting pieces (7). A T-shaped sliding groove is provided at the bottom of the inner cavity of the square-shaped block (5), and the two limit clamping strips (10) and the two sliders (9) are respectively slidably arranged inside the two T-shaped sliding grooves. The bottom of the square-shaped block (5) is provided with two symmetrical sliding openings, and the two The bottom of each of the sliders (9) is fixedly connected to a U-shaped block (11), and the two U-shaped blocks (11) are slidably arranged inside the two sliding openings. The bottoms of the two U-shaped blocks (11) are rotatably connected to a rotating shaft (15), and the two rotating shafts (15) are sleeved with a rotating block (12). The bottom ends of the two rotating shafts (15) are rotatably sleeved with another rotating shaft (15), and the two rotating shafts (15) at the bottom are jointly sleeved with a lifting block (14), and the bottom of the lifting block (14) is fixedly connected to two symmetrical springs (13), and a tension spring (4) is fixedly connected between the two movable plugs (2).

2. The wheel brake cylinder with a self-adjusting retaining spring in the piston according to claim 1, characterized in that: Dustproof sleeves (3) are provided on both sides of the cylinder body (1), and a square groove (17) is provided on the top of the lifting block (14), and both ends of the two rotating blocks (12) are rotatably arranged inside the square groove (17).

3. The wheel brake cylinder with a self-adjusting retaining spring in the piston according to claim 2, characterized in that: The bottom of the square groove (17) is fixedly connected to a limiting column (8), and the top of the limiting column (8) passes through the top of the square-shaped block (5), and the top of the square-shaped block (5) is fixedly connected to a limiting plate (6).

4. The wheel brake cylinder with a self-adjusting retaining spring in the piston according to claim 3, characterized in that: The limiting column (8) is arranged between the two rotating blocks (12) and the two sliding blocks (9), and the bottom of the limiting piece (6) is in contact with the top of the square-shaped block (5).

5. The wheel brake cylinder with a self-adjusting retaining spring in the piston according to claim 1, characterized in that: One end of the two movable plugs (2) is provided with a groove, and the inside of the two grooves is provided with a sealing ring (16) that fits the inner cavity of the cylinder body (1).

6. The wheel brake cylinder with a self-adjusting retaining spring in the piston according to claim 1, characterized in that: The tension spring (4) is located directly above the U-shaped block (5), and the U-shaped block (5) and the lifting block (14) are both located between the two movable plugs (2), and the length of the lifting block (14) is smaller than the length of the U-shaped block (5).

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