CN215513640U

CN215513640U - Brake master cylinder with novel signal sensing function structure

Info

Publication number: CN215513640U
Application number: CN202121938094.9U
Authority: CN
Inventors: 戴秀宽; 曾瑞才; 陈钦响
Original assignee: Zhejiang Ji Shang Automobile Components Co ltd
Current assignee: Zhejiang Ji Shang Automobile Components Co ltd
Priority date: 2021-08-18
Filing date: 2021-08-18
Publication date: 2022-01-14
Anticipated expiration: 2031-08-18

Abstract

The utility model relates to a brake master cylinder with a novel signal sensing function structure.A piston assembly is arranged in a cylinder hole of a shell and comprises a rear piston, a step hole is formed in the rear end of a port of the cylinder hole and is provided with a leather ring seat, the rear piston penetrates through an inner hole of the leather ring seat, a step column part is arranged on the rear piston and is matched in the cylinder hole, a floating space is reserved between the leather ring seat and the port of the cylinder hole, a floating valve seat is arranged in the floating space, a pressure spring is arranged between the floating valve seat and the leather ring seat, the floating valve seat is arranged on the rear side of the step column part in a leaning mode, an axial hole is further formed in the shell, an installation rod is arranged on the floating valve seat and is arranged in the axial hole, and a magnet is arranged on the installation rod. The magnet is arranged on the mounting rod of the floating valve seat, the floating valve seat floats back and forth in a floating space between the leather ring seat and the port of the cylinder hole to realize the back-and-forth movement of the magnet, the back-and-forth movement of the floating valve seat is driven by the cooperation of the pressure spring and the rear piston, and the whole structure space is relatively more compact.

Description

Brake master cylinder with novel signal sensing function structure

Technical Field

The utility model relates to a master cylinder.

Background

The Master Cylinder (also called brake main oil (gas)) mainly functions to push brake fluid (or gas) to be transmitted to each brake Cylinder to push a piston, and is a commonly used automobile accessory part, and a piston assembly (comprising a front piston assembly and a rear piston assembly) is arranged in a shell of the Master Cylinder.

The brake master pump for checking the Chinese patent document CN213442502U and the brake master pump with the signal sensing function are characterized in that a piston assembly is arranged in an inner cavity of a shell of the brake master pump, and the piston assembly comprises a rear piston: be equipped with hall sensor on the casing, be equipped with first axial hole and second axial hole on the casing, first axial hole and second axial hole intercommunication, the axis in first axial hole, the axis in second axial hole respectively with the axis parallel arrangement of inner chamber, the aperture in first axial hole is greater than the aperture in second axial hole, first axial is downthehole to be furnished with and is used for with hall sensor complex magnet, one side of magnet is equipped with the spring, the opposite side of magnet is equipped with the valve rod, the spring is located first axial hole, the port stopper of first axial hole has the steel ball, the spring is located between steel ball and the magnet, the valve rod configuration is in second axial hole, the valve rod is passed with the back piston top and is connected.

SUMMERY OF THE UTILITY MODEL

In view of the technical problems in the background art, the technical problem to be solved by the present invention is to provide a master cylinder with a novel signal sensing function structure. The brake master cylinder with the novel signal sensing function structure adopts a novel ferromagnetic operation matching structure.

In order to solve the technical problems, the utility model adopts the following technical scheme: the brake master cylinder that contains novel signal sensing function structure has the jar hole on the casing, and the cylinder hole internal complex has piston assembly, and piston assembly still is equipped with the sensor including back piston on the casing, and the sensor is furnished with magnet, its characterized in that: the rear end of the port of the cylinder hole is provided with a step hole, the step hole is provided with a fixedly arranged leather ring seat, a rear piston penetrates through an inner hole of the leather ring seat, a step column part is arranged on the rear piston and is matched in the cylinder hole, a floating space is reserved between the leather ring seat and the port of the cylinder hole, a floating valve seat is arranged in the floating space, a pressure applying spring is arranged between the floating valve seat and the leather ring seat, the floating valve seat is close to the rear side of the step column part, an axial hole is further formed in the shell, an installation rod is arranged on the floating valve seat and is arranged in the axial hole, and the magnet is arranged on the installation rod.

The following optimization or supplementary explanation can be performed on the technical scheme.

For example, a first leather ring is arranged between the leather ring seat and the rear piston, a sealing ring is arranged between the leather ring seat and the step hole, and a clamp spring for fixing the leather ring seat is further arranged at the end opening of the step hole.

For another example, the mounting rod is a hollow rod, the front end of the mounting rod is provided with holding claws, and the magnet is mounted between the holding claws.

In addition, an annular groove is formed in the rear side of the step column portion, an annular protrusion is arranged on the front side of the leather ring seat, and the annular protrusion is matched with the annular groove.

In addition, the outer ring of the floating valve seat is sleeved in the step hole of the shell in a matching sliding manner, the inner ring of the floating valve seat is a disc, and the disc is provided with a middle hole.

The floating valve seat can be optimized, a spring installation groove is formed in the floating valve seat, and the pressing spring is sleeved on the spring installation groove.

Wherein, still be equipped with the second leather collar on the back piston, the second leather collar is located the front side of step post part.

The utility model has the advantages that the brake master cylinder with the novel signal sensing function structure redesigns the matching operation structure of the magnet, wherein the magnet is positioned on the mounting rod of the floating valve seat, the back-and-forth movement (namely the floating) of the magnet is realized through the back-and-forth floating of the floating valve seat in the floating space between the leather collar seat and the port of the cylinder hole, the back-and-forth movement of the floating valve seat is driven by the matching of the pressure spring and the back piston, and the floating valve seat is positioned in the floating space, the whole structure space can be relatively more compact, the stroke of the pressure spring (namely the contraction distance L) only needs to meet the triggering stroke of the matching of the magnet and the sensor, the stroke is shorter, the back-and-forth movement of the pressure spring and the floating valve seat is more stable, and the service life is longer, so that the signal stability and the service life of the brake master cylinder are improved. Thus, the present invention provides substantial features and advances over the prior art.

Drawings

The following describes details and operational principles of embodiments and examples of the present invention with reference to the drawings.

FIG. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a left side view of fig. 1.

Fig. 3 is a view from direction K of fig. 2.

Fig. 4 is an enlarged view of a in fig. 1.

Fig. 5 is an enlarged view of B in fig. 3.

Fig. 6 is a perspective view of the floating valve seat.

Fig. 7 is a schematic structural view of fig. 6 from another angle.

In the figure: 1. a housing; 2. a cylinder bore; 3. a piston assembly; 4. a rear piston; 5. a sensor; 6. a magnet; 7. a port; 8. a stepped bore; 9. a leather collar seat; 10. a step post portion; 11. a floating space; 12. a floating valve seat; 13. a pressure applying spring; 14. an axial bore; 15. mounting a rod; 16. a first apron; 17. a seal ring; 18. embracing a claw; 19. an annular groove; 20. an annular projection; 21. a disc; 22. a mesopore; 23. a spring mounting groove; 24. a second apron; 25. fastening screws; 26. a baffle plate; 27. and (4) a groove.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention; it should be apparent that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work based on the embodiments of the present invention belong to the protection scope of the present invention.

Referring to the drawings, in the master cylinder with the novel signal sensing function structure in the embodiment of the present invention, a cylinder hole 2 is formed in a housing 1 (i.e., a cylinder), a piston assembly 3 is disposed in the cylinder hole 2, the piston assembly 3 includes a front piston and a rear piston 4, etc., a sensor 5 (e.g., a hall sensor 5) is further disposed on the housing 1, the sensor 5 can be connected and mounted on the housing 1 through a fastening screw 25, the sensor 5 is provided with a magnet 6, the magnet 6 is matched with the sensor 5, and the sensor 5 is triggered by the proximity of the magnet 6 to the sensor 5, which is a mature technology.

The utility model aims to ensure that the magnet 6 moves back and forth more reasonably and the service life of the brake master cylinder is longer. Wherein, the rear end of the port 7 of the cylinder hole 2 is provided with a step hole 8 (which can be a multi-stage step hole, such as a first stage, a second stage), the step hole 8 is provided with a leather collar seat 9, the leather collar seat 9 is fixedly arranged in the step hole 8, the rear piston 4 passes through the inner hole of the leather collar seat 9, the rear piston 4 is provided with a step column part 10, the step column part 10 is a raised cylinder, the step column part 10 is matched in the cylinder hole 2, so that the rear piston 4 acts as a piston action in the cylinder hole 2, a floating space 11 is left between the leather collar seat 9 and the port 7 of the cylinder hole 2, a floating valve seat 12 is arranged in the floating space 11, the floating valve seat 12 can be limited in the floating space 11 to move back and forth (i.e. float back and forth), a pressing spring 13 (such as a compression spring) is arranged between the floating valve seat 12 and the leather collar seat 9, the leather collar seat 9 is fixedly arranged, the pressing spring 13 can apply an elastic force on the floating valve seat 12, floating back and forth in cooperation with the floating valve seat 12; the floating valve seat 12 is disposed at the rear side of the step column portion 10, and when the rear piston 4 moves its step column portion 10 backward to contact the floating valve seat 12, the floating valve seat 12 is driven to move backward against the elastic force, and when the rear piston 4 moves forward, the floating valve seat 12 moves forward by the elastic force of the pressure spring 13 until it abuts against the port 7 of the cylinder bore 2. In addition, the housing 1 is further provided with an axial hole 14, the floating valve seat 12 is provided with a mounting rod 15, the mounting rod 15 is arranged in the axial hole 14 so that the mounting rod 15 can move back and forth in the axial hole 14, the magnet 6 is arranged on the mounting rod 15, and the magnet 6 moves back and forth along with the mounting rod 15 to change positions so as to be matched with the sensor 5 on the housing 1.

The brake master cylinder with the novel signal sensing function structure redesigns the matching operation structure of the magnet 6, wherein the magnet 6 is located on the mounting rod 15 of the floating valve seat 12, the floating valve seat 12 floats back and forth in the floating space 11 between the apron seat 9 and the port 7 of the cylinder hole 2, the magnet 6 moves back and forth with the floating valve seat 12, so as to cooperate with the sensor 5 mounted on the housing 1, the back and forth movement of the floating valve seat 12 is driven by the cooperation of the pressure spring 13 and the rear piston 4, and the floating valve seat 12 is located in the floating space 11, the whole structure space can be relatively more compact, the stroke (i.e. the contraction distance L) of the pressure spring 13 only needs to satisfy the trigger stroke for matching the magnet 6 and the sensor 5, the stroke can be shorter, the back-and-forth movement of the pressure spring 13 and the floating valve seat 12 is more stable, and the service life is longer, so that the signal stability and the service life of the master cylinder are improved.

The following optimization or further explanation can be made on the basis of the above embodiment.

For example, a first leather collar 16 is arranged between the leather collar seat 9 and the rear piston 4, a sealing ring 17 is arranged between the leather collar seat 9 and the stepped hole 8, and a clamp spring for fixing the leather collar seat 9 is further arranged at the port 7 of the stepped hole 8. The leather ring seat 9 is convenient to install and fix in the stepped hole 8, and the clamping spring is arranged in the clamping groove of the stepped hole 8. Meanwhile, the space between the leather ring seat 9 and the rear piston 4 is sealed by the first leather ring 16, and the rear piston 4 reciprocates in the middle of the leather ring seat 9. The seal ring 17 effects a seal between the seat 9 and the stepped bore 8 of the housing 1. Grooves 27 can be respectively formed in the inner ring and the outer ring of the leather ring seat 9 for installation of the first leather ring 16 and the sealing ring 17, and the leather ring seat is convenient to process, convenient to install and assemble and stable in position.

The connection mode of the magnet 6 and the mounting rod 15 is more, for example, the mounting rod 15 is welded by plastics or provided with a mounting cavity matched with a cover (the magnet 6 is arranged in the mounting cavity), and the cover and the mounting cavity can be connected by screw threads (internal threads and external threads are connected in a rotating fit mode) or can be connected by a buckle or a clamping hook or a fastener or welded. In the figure, the installation rod 15 is a hollow rod, the front end part of the installation rod 15 is provided with the holding claws 18, the magnets 6 are installed between the holding claws 18, the holding claws 18 are spread, the magnets 6 are stuffed between the holding claws 18, the protrusions at the end parts of the holding claws 18 limit the magnets 6, and in addition, the baffle 26 can be arranged in the hollow rod to limit the magnets 6 when the magnets 6 are installed, so that the magnets 6 are more conveniently installed.

In addition, the back side of the step column part 10 is provided with an annular groove 19, the front side of the leather collar seat 9 is provided with an annular protrusion 20 (forming an extension sleeve), the annular protrusion 20 is matched with the annular groove 19, and the annular protrusion 20 can be sleeved in the annular groove 19, so that the stability of the structure is enhanced.

In addition, the outer ring of the floating valve seat 12 is sleeved in the stepped hole 8 of the shell 1 in a matching sliding manner, so that the floating valve seat 12 can float more stably in the shell 1, the inner ring of the floating valve seat 12 is a disk 21, the disk 21 is provided with a middle hole 22 (forming an annular disk), the middle hole 22 can be passed and penetrated by the rear piston 4 and the like, and the disk 21 is conveniently positioned in the floating space 11 so as to be matched with the stepped column part 10 and the like.

Further optimization is also achieved, a spring installation groove 23 is formed in the floating valve seat 12, the pressure applying spring 13 is sleeved on the spring installation groove 23, the pressure applying spring 13 is convenient to install, and operation is stable.

Wherein, the rear piston 4 is further provided with a second leather collar 24, and the second leather collar 24 is positioned at the front side of the step column part 10 to enhance the sealing performance between the rear piston 4 and the cylinder hole 2 of the housing 1. There is also a radial through hole in the stepped stem portion 10 and a pin is also provided in the radial through hole.

The foregoing is a preferred embodiment of the present invention, and it should be noted that the scope of the present invention is not limited thereto. It will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the scope of the utility model as set forth in the claims.

Claims

1. Brake master cylinder who contains novel signal sensing function structure has cylinder hole (2) on casing (1), and piston assembly (3) are furnished with in cylinder hole (2), and piston assembly (3) still are equipped with sensor (5) including back piston (4) on casing (1), and sensor (5) are furnished with magnet (6), its characterized in that: the rear end of a port (7) of a cylinder hole (2) is provided with a stepped hole (8), the stepped hole (8) is provided with a fixedly arranged leather ring seat (9), a rear piston (4) penetrates through an inner hole of the leather ring seat (9), a stepped column part (10) is arranged on the rear piston (4), the stepped column part (10) is matched in the cylinder hole (2), a floating space (11) is reserved between the leather ring seat (9) and the port (7) of the cylinder hole (2), a floating valve seat (12) is arranged in the floating space (11), a pressure applying spring (13) is arranged between the floating valve seat (12) and the leather ring seat (9), the floating valve seat (12) is arranged at the rear side of the stepped column part (10) in a leaning mode, an axial hole (14) is further arranged on a shell (1), an installation rod (15) is arranged on the floating valve seat (12), the installation rod (15) is arranged in the axial hole (14), and a magnet (6) is arranged on the installation rod (15).

2. The master cylinder with the novel signal sensing function structure as claimed in claim 1, wherein: a first leather ring (16) is arranged between the leather ring seat (9) and the rear piston (4), a sealing ring (17) is arranged between the leather ring seat (9) and the step hole (8), and a clamp spring for fixing the leather ring seat (9) is further arranged at a port (7) of the step hole (8).

3. The master cylinder with the novel signal sensing function structure as claimed in claim 1, wherein: the mounting rod (15) is a hollow rod, the front end part of the mounting rod (15) is provided with holding claws (18), and the magnets (6) are mounted between the holding claws (18).

4. The master cylinder with the novel signal sensing function structure as claimed in claim 1, wherein: an annular groove (19) is formed in the rear side of the step column portion (10), an annular protrusion (20) is arranged on the front side of the leather ring seat (9), and the annular protrusion (20) is matched with the annular groove (19).

5. The master cylinder with the novel signal sensing function structure as claimed in claim 1, wherein: the outer ring of the floating valve seat (12) is sleeved in a step hole (8) of the shell (1) in a matching sliding mode, the inner ring of the floating valve seat (12) is a disc (21), and the disc (21) is provided with a middle hole (22).

6. The master cylinder with the novel signal sensing function structure as claimed in claim 5, wherein: the floating valve seat (12) is provided with a spring installation groove (23), and the pressure applying spring (13) is sleeved on the spring installation groove (23).

7. The master cylinder with the novel signal sensing function structure as claimed in claim 1, wherein: the rear piston (4) is also provided with a second leather collar (24), and the second leather collar (24) is positioned on the front side of the step column part (10).