CN218228962U - Split type pressure building cylinder of integrated electro-hydraulic brake system - Google Patents
Split type pressure building cylinder of integrated electro-hydraulic brake system Download PDFInfo
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- CN218228962U CN218228962U CN202221999988.3U CN202221999988U CN218228962U CN 218228962 U CN218228962 U CN 218228962U CN 202221999988 U CN202221999988 U CN 202221999988U CN 218228962 U CN218228962 U CN 218228962U
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Abstract
The utility model discloses a split type pressure building cylinder of an integrated electro-hydraulic brake system, which relates to the field of automobile brake systems and comprises a ball screw, a piston, a first part cylinder body and a second part cylinder body, wherein one end of the first part cylinder body is a closed end face, and the other end of the first part cylinder body is an open end face; two ends of the second part of cylinder body are communicated, and one end facing the open end face is fixedly connected with the open end face in a clamping groove mode to form piston cavities which are communicated with each other; the ball screw comprises a screw rod and a screw rod nut arranged on the screw rod in a rolling manner through balls, and the ball screw is axially placed into a piston cavity of the second part of cylinder body; one end of the piston is fixed on the screw rod nut, and the other end of the piston moves in a telescopic mode along the axial direction of the piston cavity. The utility model discloses separate ball screw device prevent changeing guide part and pressure building jar, and both mutually support again. The structure is simple and compact, the processing can be respectively carried out, the production and manufacturing cost is reduced, the installation is convenient, and meanwhile, the concentricity of the two parts can be better ensured.
Description
Technical Field
The utility model relates to a car braking system's field, concretely relates to integrated form electricity liquid braking system's split type pressure cylinder of building.
Background
In the existing automobile brake system, the pressure building cylinder needs to bear the rotation prevention of the nut and also needs to contain the piston to establish high pressure in a cavity of the pressure building cylinder, and the pressure building cylinder is one of the key components of the electronic brake booster and has high requirement on processing precision. When the liquid demand is large, under the condition of not changing the diameter of the piston, the piston needs more strokes, the longer the groove of the pressure building cylinder body is, the longer the pressure building cavity is, which causes difficulty in processing the pressure building cylinder body, possibly causes the cutter head to shake due to too deep insertion, causes processing inaccuracy and further influences the working performance of the product.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome the not enough of prior art existence, and provide an integrated form electricity liquid braking system's split type pressure cylinder of building, solved build press the stroke longer, the integral type is built and is pressed the chamber and have the part complicated, the manufacturing problem that the degree of difficulty is big. The device has the advantages of simple structure, small processing difficulty, low manufacturing cost and convenience in installation.
The purpose of the utility model is accomplished through following technical scheme: the split type pressure building cylinder of the integrated electro-hydraulic brake system comprises a ball screw, a piston, a first part cylinder body and a second part cylinder body, wherein the first part cylinder body and the second part cylinder body are opposite to each other and coaxially arranged; two ends of the second part of cylinder body are communicated, and one end facing the open end face is fixedly connected with the open end face by a clamping groove type, so that a mutually communicated piston cavity is formed between the first part of cylinder body and the second part of cylinder body and is used for accommodating a piston; the ball screw comprises a screw rod and a screw rod nut arranged on the screw rod in a rolling manner through balls, and the ball screw is axially arranged in a piston cavity of the second part of cylinder body; one end of the piston is fixed on the screw rod nut, and the other end of the piston moves in an axial telescopic mode along the piston cavity.
As a further technical scheme, a screw rod groove is formed in one end, facing the screw rod nut, of the piston and used for accommodating the screw rod.
As a further technical scheme, one side of the screw rod nut, which faces the piston, is provided with an extension end, and the extension end is inserted into the screw rod groove and is fixedly connected with the inner wall of the screw rod groove in a threaded manner.
As a further technical scheme, the screw rod extends out of the second part cylinder body from the end face, away from the first part cylinder body, of the second part cylinder body and is used for being connected with an external motor.
As a further technical scheme, a hydraulic block is sleeved on the outer cylindrical surface of the first part of cylinder body, and the end surface of the hydraulic block is fixed with one end, facing the open end surface, of the second part of cylinder body.
As a further technical scheme, one end of the second part of the cylinder body facing to the open end face protrudes outwards along the circumferential direction to form at least two fastening flanges, and the fastening flanges are fixedly connected with the end face through bolts.
As a further technical scheme, a circular groove is formed in one end, facing the open end face, of the second cylinder body part, and the open end face and part of the outer cylindrical surface of the first cylinder body part are embedded into the circular groove, so that the coaxiality of the first cylinder body part and the second cylinder body part is guaranteed.
As a further technical scheme, the circular groove is outwards protruded along the circumferential direction to form at least one groove, the position, corresponding to the groove, of the open end face is provided with the same number of limiting flanges, and the limiting flanges are embedded in the groove.
As a further technical scheme, one end of the limiting flange is limited by the bottom surface of the circular groove, and the other end of the limiting flange is limited by the end surface of the hydraulic block; and the hydraulic block is provided with a through hole for mounting the first part of cylinder body, and an outer cylindrical surface which is not embedded into the circular groove is limited by the hole wall of the through hole in the radial direction.
As a further technical scheme, at least one anti-rotation guide convex strip is arranged on the inner wall of the second part cylinder body, an anti-rotation guide groove is formed in the position, corresponding to the anti-rotation guide convex strip, on the outer wall of the screw nut, and the screw nut slides axially along the anti-rotation guide convex strip through the anti-rotation guide groove.
The utility model has the advantages that: the anti-rotation guide component of the ball screw device is separated from the pressure building cylinder, and the anti-rotation guide component and the pressure building cylinder are matched with each other. The structure is simple and compact, the processing can be respectively carried out, the production and manufacturing cost is reduced, the installation is convenient, and meanwhile, the concentricity of the two can be better ensured.
Drawings
Fig. 1 is a structural sectional view of the present invention.
Fig. 2 is a schematic view of the three-dimensional structure of the present invention (excluding the hydraulic block).
Fig. 3 is a schematic structural diagram of a second part cylinder.
Fig. 4 is a schematic structural diagram of the first part cylinder.
Description of reference numerals: the anti-rotation guide structure comprises a screw rod 1, a ball 2, a screw nut 3, an anti-rotation guide groove 301, an extension end 302, a piston 4, a screw rod groove 401, a second part cylinder 5, a fastening flange 501, a groove 502, an anti-rotation guide convex strip 503, a circular groove 504, a bottom surface 505, a first part cylinder 6, a limiting flange 601, an outer cylindrical surface 602, a closed end surface 603, an open end surface 604, a hydraulic block 7, an end surface 701, a hole wall 702, a bolt 8 and a piston cavity 9.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings:
example (b): as shown in fig. 1 to 4, the split pressure building cylinder of the integrated electro-hydraulic brake system includes a ball screw, a piston 4, and a first partial cylinder 6 and a second partial cylinder 5 which are opposite to each other and coaxially arranged, as shown in fig. 4, one end of the first partial cylinder 6 is a closed end face 603, and the other end is an open end face 604. Referring to fig. 3, two ends of the second partial cylinder 5 are connected, and one end facing the open end surface 604 is fixedly connected with the open end surface 604 by a snap-in connection, so that a piston cavity 9 communicating with each other is formed between the first partial cylinder 6 and the second partial cylinder 5, and is used for accommodating the piston 4. The ball screw comprises a screw rod 1 and a screw nut 3 which is arranged on the screw rod 1 through a ball 2 in a rolling manner, and the ball screw is arranged in a piston cavity 9 of the second part cylinder 5 along the axial direction. One end of the piston 4 is fixed on the screw rod nut 3, and the other end of the piston 4 moves in a telescopic mode along the axial direction of the piston cavity 9. Further, as shown in fig. 1, a screw groove 401 is opened at an end of the piston 4 facing the screw nut 3 for receiving the screw 1. An extension end 302 is arranged on one side of the feed screw nut 3 facing the piston 4, and the extension end 302 is inserted into the screw rod groove 401 and is fixedly connected with the inner wall of the screw rod groove 401 through threads. The screw rod 1 extends out of the second part cylinder 5 from the end face, away from the first part cylinder 6, of the second part cylinder 5 and is used for being connected with an external motor.
Referring to fig. 1, the first cylinder 6 is sleeved with a hydraulic block 7 on an outer cylindrical surface 602, and a left end surface 701 of the hydraulic block 7 is fixed to an end of the second cylinder 5 facing an open end surface 604. Preferably, as shown in fig. 3, the second partial cylinder 5 protrudes outward in the circumferential direction toward one end of the open end surface 604 to form two (or more) fastening flanges 501, and the fastening flanges 501 are fixedly connected with the end surface 701 through bolts 8. In this way, the second partial cylinder 5 is restricted in its axial, radial and circumferential movements.
Further, as shown in fig. 3 and 4, a circular groove 504 is formed in one end of the second cylinder 5 facing the open end surface 604, and the open end surface 604 and a part of the outer cylindrical surface 602 of the first cylinder 6 are embedded in the circular groove 504, so as to ensure the coaxiality of the first cylinder 6 and the second cylinder 5. The circular groove 504 is formed with two grooves 502 protruding outwards along the circumferential direction, the same number of limiting flanges 601 are arranged on the open end face 604 corresponding to the grooves 502, and the limiting flanges 601 are embedded in the grooves 502. Referring to fig. 1, one end of the limiting flange 601 is limited by the bottom surface 505 of the circular groove 504, and the other end of the limiting flange 601 is limited by the end surface 701 of the hydraulic block 7, so that the axial limitation of the first partial cylinder 6 is ensured. The hydraulic block 7 is provided with a through hole for mounting the first part cylinder 6, and the outer cylindrical surface 602 (the first part cylinder 6) which is not embedded in the circular groove 504 is limited radially by the hole wall 702 of the through hole. The first partial cylinder 6 is circumferentially limited by the groove 502 of the second partial cylinder 5. In this way, the first partial cylinder 6 is restricted in all three directions.
As shown in fig. 2 and 3, at least one anti-rotation guide protruding strip 503 is disposed on the inner wall of the second partial cylinder 5, an anti-rotation guide groove 301 is formed on the outer wall of the lead screw nut 3 at a position corresponding to the anti-rotation guide protruding strip 503, and the lead screw nut 3 axially slides along the anti-rotation guide protruding strip 503 through the anti-rotation guide groove 301.
The utility model discloses a working process: as shown in fig. 1 and 2, the screw rod 1 is driven by an external motor to rotate, and the screw rod nut 3 slides along the axial direction of the screw rod 1, so as to drive the piston 4 fixed on the screw rod nut 3 to slide along the axial direction, thereby performing telescopic motion in the piston cavity 9. In the axial sliding process of the screw rod nut 3, the anti-rotation guide raised lines 503 on the second part cylinder body 5 guide and prevent the rotation of the screw rod nut, and the first part cylinder body 6 plays a role of a pressure building cavity for containing brake fluid. The utility model discloses in, because first portion cylinder body 6 and second portion cylinder body 5 adopt split type integrated configuration, the two can be processed alone respectively, greatly reduced the manufacturing degree of difficulty. The function of the original single pressure building cylinder body can be realized by two cylinder bodies together, and the normal braking effect of the vehicle is ensured.
It should be understood that the technical solutions and the inventive concepts of the present invention as equivalent as those of the skilled in the art should be replaced or changed by the claims.
Claims (10)
1. The utility model provides a split type pressure of building jar of integrated form electric hydraulic brake system which characterized in that: the device comprises a ball screw, a piston (4), a first part cylinder body (6) and a second part cylinder body (5), wherein the first part cylinder body (6) and the second part cylinder body (5) are opposite to each other and are coaxially arranged, one end of the first part cylinder body (6) is a closed end face (603), and the other end of the first part cylinder body is an open end face (604); two ends of the second part cylinder body (5) are communicated, and one end facing the open end face (604) is fixedly connected with the open end face (604) in a clamping groove mode, so that a piston cavity (9) communicated with each other is formed between the first part cylinder body (6) and the second part cylinder body (5) and is used for accommodating the piston (4); the ball screw comprises a screw rod (1) and a screw rod nut (3) which is arranged on the screw rod (1) in a rolling way through a ball (2), and the ball screw is axially arranged in a piston cavity (9) of the second part cylinder body (5); one end of the piston (4) is fixed on the screw rod nut (3), and the other end of the piston (4) moves in a telescopic mode along the axial direction of the piston cavity (9).
2. The split pressure build cylinder of the integrated electro-hydraulic brake system according to claim 1, wherein: and one end of the piston (4) facing the screw rod nut (3) is provided with a screw rod groove (401) for accommodating the screw rod (1).
3. The split pressure build cylinder of the integrated electro-hydraulic brake system according to claim 2, wherein: and an extension end (302) is arranged on one side of the feed screw nut (3) facing the piston (4), and the extension end (302) is inserted into the screw rod groove (401) and is fixed with the inner wall of the screw rod groove (401).
4. The split pressure building cylinder of the integrated electro-hydraulic brake system according to any one of claims 1 to 3, wherein: the screw rod (1) extends out of the second part cylinder body (5) from the end face, away from the first part cylinder body (6), of the second part cylinder body (5) and is used for being connected with an external motor.
5. The split pressure building cylinder of the integrated electro-hydraulic brake system according to claim 1, wherein: the hydraulic block (7) is sleeved on the outer cylindrical surface (602) of the first part of cylinder body (6), and the end surface (701) of the hydraulic block (7) is fixed with one end, facing the open end surface (604), of the second part of cylinder body (5).
6. The split pressure building cylinder of the integrated electro-hydraulic brake system according to claim 5, wherein: one end of the second part cylinder body (5) facing the open end face (604) protrudes outwards along the circumferential direction to form at least two fastening flanges (501), and the fastening flanges (501) are fixedly connected with the end face (701) through bolts (8).
7. The split pressure building cylinder of the integrated electro-hydraulic brake system according to claim 5, wherein: one end, facing the open end face (604), of the second part cylinder body (5) is provided with a circular groove (504), the open end face (604) and part of the outer cylindrical surface (602) of the first part cylinder body (6) are embedded into the circular groove (504), and coaxiality of the first part cylinder body (6) and the second part cylinder body (5) is guaranteed.
8. The split pressure building cylinder of the integrated electro-hydraulic brake system according to claim 7, wherein: the circular groove (504) is outwards protruded along the circumferential direction to form at least one groove (502), the position, corresponding to the groove (502), of the open end face (604) is provided with the same number of limiting flanges (601), and the limiting flanges (601) are embedded in the groove (502).
9. The split pressure building cylinder of the integrated electro-hydraulic brake system according to claim 8, wherein: one end of the limiting flange (601) is limited by the bottom surface (505) of the circular groove (504), and the other end of the limiting flange (601) is limited by the end surface (701) of the hydraulic block (7); a through hole for mounting the first part of cylinder body (6) is formed in the hydraulic block (7), and an outer cylindrical surface (602) which is not embedded into the circular groove (504) is limited by the hole wall (702) of the through hole in the radial direction.
10. The split pressure build cylinder of the integrated electro-hydraulic brake system according to claim 1, wherein: at least one anti-rotation guide convex strip (503) is arranged on the inner wall of the second part cylinder body (5), an anti-rotation guide groove (301) is formed in the position, corresponding to the anti-rotation guide convex strip (503), on the outer wall of the screw rod nut (3), and the screw rod nut (3) axially slides along the anti-rotation guide convex strip (503) through the anti-rotation guide groove (301).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221999988.3U CN218228962U (en) | 2022-07-29 | 2022-07-29 | Split type pressure building cylinder of integrated electro-hydraulic brake system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221999988.3U CN218228962U (en) | 2022-07-29 | 2022-07-29 | Split type pressure building cylinder of integrated electro-hydraulic brake system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218228962U true CN218228962U (en) | 2023-01-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221999988.3U Active CN218228962U (en) | 2022-07-29 | 2022-07-29 | Split type pressure building cylinder of integrated electro-hydraulic brake system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218228962U (en) |
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2022
- 2022-07-29 CN CN202221999988.3U patent/CN218228962U/en active Active
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