CN212637463U

CN212637463U - Brake master cylinder with valve core leather cup

Info

Publication number: CN212637463U
Application number: CN202021325272.6U
Authority: CN
Inventors: 王永安
Original assignee: Ruian Hongji Auto Parts Co ltd
Current assignee: Ruian Hongji Auto Parts Co ltd
Priority date: 2020-07-08
Filing date: 2020-07-08
Publication date: 2021-03-02
Anticipated expiration: 2030-07-08

Abstract

The utility model belongs to the technical field of the auto brake accessory technique and specifically relates to a take brake master cylinder of case leather cup is related to, including the pump body, slide in the pump body and be equipped with piston assembly, piston assembly includes first piston, and the dead ahead of first piston is equipped with the second piston, and the rear end of first piston is equipped with push rod assembly, and one side of the pump body is crisscross to be equipped with two glib talkers and two sets of case subassemblies, and the case subassembly includes the case leather cup. The brake master cylinder with the valve core leather cup can improve the sealing property in the pump body and avoid air pressure leakage; meanwhile, the pressure maintaining effect can be further achieved through the valve core leather cup, partial pressure is reserved in the pump body all the time, the brake condition can be quickly achieved when the pump body is used, and the driving safety of an automobile is further improved.

Description

Brake master cylinder with valve core leather cup

Technical Field

The utility model relates to an automobile brake accessory technical field, specifically speaking relates to a take brake master cylinder of case leather cup.

Background

In 2020, with the continuous support of new energy electric automobile development by the state, a plurality of electric sanitation vehicles and electric road watering vehicles are increasing in each city, and because the vehicle body is large and the load capacity is heavy, the vehicle often runs on a plurality of main roads with large traffic flow in the city, and each large vehicle host manufacturer reflects that the existing brake system has poor brake effect and great traffic hidden trouble.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a take brake master cylinder of case leather cup to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

the brake master cylinder with the valve core leather cup comprises a pump body, wherein a piston assembly is arranged in the pump body in a sliding mode, the piston assembly comprises a first piston, a first main leather cup and a first spring are sequentially arranged at the front end of the first piston from back to front, a second piston is arranged right in front of the first piston, a second main leather cup and a second spring are sequentially arranged at the front end of the second piston from back to front, a limiting seat is arranged at the rear end of the second piston, the limiting seat is connected with the first piston through a connecting screw, a push rod assembly is arranged at the rear end of the first piston, two oil nozzles and two sets of valve core assemblies are arranged on one side of the pump body in a staggered mode, each oil nozzle comprises an oil nozzle main body, each valve core assembly comprises a valve core leather cup, a valve core spring is arranged at the bottom end of each valve core leather cup, and a joint screw is arranged in the middle of each valve core leather cup.

Preferably, a cylinder pipe is arranged in the middle of the pump body, two oil nozzle installation pipes and two valve core installation pipes are arranged on one side of the pump body in a staggered mode, the oil nozzle installation pipes and the valve core installation pipes are communicated into the cylinder pipe, and a dust cover is sleeved on the outer side of the rear end of the pump body.

As preferred, the rear end outside cover of first piston is equipped with first pair leather cup, first pair leather cup with the direction that sets up of first main leather cup is the same, the outside cover of first main leather cup is equipped with the oil return piece, the rear end of first spring passes through spring holder connection on the first main leather cup, the front end welded fastening of first spring is in the outside of spacing seat.

Preferably, the back end outside cover of second piston is equipped with the vice leather cup of second, the vice leather cup of second with the first main leather cup set up opposite direction, the second main leather cup with shape, the size homogeneous phase of first main leather cup is the same, the back end of second spring passes through spring holder and connects on the second main leather cup, the front end welded fastening of second spring is in on the front end inside wall of jar pipe.

Preferably, the front end of the limiting seat is fixed on the second piston through a screw, and the connecting screw passes through the limiting seat and is in threaded connection with the front end of the first piston.

Preferably, the push rod assembly comprises a main push rod, the front end of the main push rod is slidably clamped in the cylinder pipe, a gasket is sleeved on the outer side of the front end of the main push rod, an A-shaped hole retainer ring is arranged between the gasket and the side wall of the rear end of the cylinder pipe, and a push rod sleeve is fixed on the outer side of the rear end of the main push rod through a nut.

Preferably, the outer diameters of the heads of the first main leather cup and the second main leather cup are larger than or equal to the inner diameter of the cylinder pipe, and the outer diameters of the heads of the first auxiliary leather cup and the second auxiliary leather cup are larger than or equal to the inner diameter of the cylinder pipe.

Preferably, the oil nozzle main body is rotatably clamped in the oil nozzle mounting pipe, an O-shaped sealing ring is sleeved on the outer side of the lower end of the oil nozzle main body, and an oil nozzle pressing sheet is sleeved on the outer side of the top end of the oil nozzle main body.

Preferably, one end, far away from the oil nozzle main body, of the oil nozzle pressing plate is fixed on the pump body through an oil cup locking screw, and an oil cup locking screw elastic pad is arranged between the oil cup locking screw and the oil nozzle pressing plate.

Preferably, the valve core leather cup and the valve core spring are clamped in the valve core mounting pipe, and the joint screw penetrates through the valve core leather cup and the valve core spring in sequence and then is fixed at the bottom end of the valve core mounting pipe in a threaded manner.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the brake master cylinder with the valve core cup is improved on the basis of the traditional one-cylinder two-piston mode, and the sealing performance in the pump body can be improved, air pressure is prevented from leaking, and the overall performance of the brake master cylinder is enhanced by adding the two auxiliary cups in opposite directions;

2. the brake master cylinder with the valve core cup has the advantages that the valve core cup is provided with the umbrella-shaped head, and can be opened and closed along with pressure change, so that the pressure maintaining effect can be further realized, partial pressure is reserved in the pump body all the time, the brake condition can be quickly achieved when the brake master cylinder is used, the brake effect of the brake master cylinder is improved, and the driving safety of an automobile is further improved.

Drawings

Fig. 1 is a schematic overall top view structure of the utility model;

fig. 2 is a schematic view of the overall front sectional structure of the utility model;

FIG. 3 is a schematic cross-sectional view of the surface A-A of the utility model;

FIG. 4 is a schematic sectional view of the pump body of the present invention;

FIG. 5 is a schematic sectional view of a piston assembly of the present invention;

FIG. 6 is a schematic sectional view of a nozzle tip of the present invention;

fig. 7 is a schematic sectional view of a valve element assembly according to the present invention.

In the figure:

1. a pump body; 11. a cylinder pipe; 12. a nozzle tip mounting tube; 13. a valve core mounting tube; 14. a dust cover;

2. a piston assembly; 21. a first piston; 211. a first set of leather cups; 22. a first main leather cup; 221. an oil return sheet; 23. a first spring; 231. a spring seat; 24. a second piston; 241. a second pair of leather cups; 25. a second main leather cup; 26. a second spring; 27. a limiting seat; 28. a connecting screw;

3. a push rod assembly; 31. a main push rod; 32. a gasket; 33. a type a orifice ring; 34. a push rod sleeve; 341. a nut;

4. a nozzle tip; 41. a nozzle body; 42. an O-shaped sealing ring; 43. tabletting by using a glib; 44. the oil cup locks the screw spring washer; 45. an oil cup locking screw;

5. a valve core assembly; 51. a valve core leather cup; 52. a spool spring; 53. a joint screw.

Detailed Description

The technical solution in the present invention will be clearly and completely described below with reference to the drawings in the present invention, and it is obvious that the described utility model is only a part of the utility model rather than the whole utility model. Based on utility model provides a, all other utility model that the ordinary skilled person in the art obtained under the prerequisite of not making creative work all belong to the utility model discloses the scope of protection.

In the description of the present invention, it is to be understood that the terms "intermediate", "front", "rear", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be considered as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

Referring to fig. 1-7, the present invention provides a technical solution:

the utility model provides a take brake master cylinder of case leather cup, which comprises a pump body 1, it is equipped with piston assembly 2 to slide in the pump body 1, piston assembly 2 includes first piston 21, the front end of first piston 21 is equipped with first main leather cup 22 and first spring 23 from back to front in proper order, the dead ahead of first piston 21 is equipped with second piston 24, the front end of second piston 24 is equipped with second main leather cup 25 and second spring 26 from back to front in proper order, the rear end of second piston 24 is equipped with spacing seat 27, be connected through connecting screw 28 between spacing seat 27 and the first piston 21, the rear end of first piston 21 is equipped with push rod assembly 3, one side of the pump body 1 is crisscross to be equipped with two glib 4 and two sets of case subassemblies 5, glib 4 includes glib main part 41, case subassembly 5 includes case leather cup 51, the bottom of case leather cup 51 is equipped with case spring 52, be equipped with joint screw 53 in the middle of case leather cup 51.

In this embodiment, a cylinder tube 11 is disposed in the middle of the pump body 1, and the piston assembly 2 is slidably clamped in the cylinder tube 11.

Further, one side of the pump body 1 is provided with two oil nozzle mounting pipes 12 and two valve core mounting pipes 13 in a staggered manner, and the oil nozzle mounting pipes 12 and the valve core mounting pipes 13 are communicated into the cylinder pipe 11.

Further, the outer side of the rear end of the pump body 1 is sleeved with a dust cover 14 to prevent impurities from entering the cylinder tube 11.

In this embodiment, the rear end outside cover of first piston 21 is equipped with first pair leather cup 211, and first pair leather cup 211 is the same with first main leather cup 22's the direction that sets up, and first pair leather cup 211 is used for the separation its and jar pipe 11 intercommunication between the rear end outside, avoids the inside atmospheric pressure of jar pipe 11 to outwards reveal.

Further, an oil return sheet 221 is sleeved outside the first main leather cup 22 to prevent oil from flowing back.

Further, the rear end of the first spring 23 is connected to the first main cup 22 through a spring seat 231, and the front end of the first spring 23 is welded and fixed to the outer side of the limiting seat 27, so that the first spring 23 is firm and stable.

In this embodiment, the rear end outside cover of second piston 24 is equipped with the vice leather cup 241 of second, and the vice leather cup 241 of second sets up opposite direction with first main leather cup 22, and the vice leather cup 241 of second is used for the intercommunication between two glib talker installation pipes 12 of separation, avoids the fluid of both sides to mix.

Further, the second main cup 25 is identical to the first main cup 22 in shape and size.

Furthermore, the rear end of the second spring 26 is connected to the second main cup 25 through a spring seat 231, and the front end of the second spring 26 is welded and fixed to the inner side wall of the front end of the cylinder tube 11, so that the second spring 26 is firm and stable.

In this embodiment, the front end of the limiting seat 27 is fixed on the second piston 24 by a screw, so that the limiting seat 27 is firm and stable.

Further, a connection screw 28 is screwed at the front end of the first piston 21 after passing through the stopper seat 27, and the distance between the first piston 21 and the second piston 24 is defined by the connection screw 28.

In this embodiment, the push rod assembly 3 includes a main push rod 31, and the front end of the main push rod 31 is slidably clamped in the cylinder tube 11, so as to facilitate pushing the piston assembly 2 to move through the main push rod 31.

Furthermore, a gasket 32 is sleeved outside the front end of the main push rod 31, an a-shaped hole retainer 33 is arranged between the gasket 32 and the rear end side wall of the cylinder tube 11, and the gasket 32 and the a-shaped hole retainer 33 can reduce collision and abrasion between the front end of the main push rod 31 and the rear side wall of the cylinder tube 11, improve sealing performance and prevent the main push rod 31 from slipping out of the cylinder tube 11.

Further, a push rod sleeve 34 is fixed on the outer side of the rear end of the main push rod 31 through a nut 341, so that the push rod sleeve 34 is firm and stable and is convenient to connect with a brake pedal.

In addition, the outer diameters of the heads of the first main cup leather 22 and the second main cup leather 25 are larger than or equal to the inner diameter of the cylinder pipe 11, and the outer diameters of the heads of the first auxiliary cup leather 211 and the second auxiliary cup leather 241 are larger than or equal to the inner diameter of the cylinder pipe 11, so that the sealing effect between the cup leather and the cylinder pipe 11 can be effectively improved.

In this embodiment, the nozzle tip body 41 is rotatably engaged with the nozzle tip mounting pipe 12, so that the nozzle tip body 41 can be communicated with the cylinder pipe 11.

Further, an O-ring seal 42 is fitted on the outer side of the lower end of the nozzle body 41, and the O-ring seal 42 can improve the sealing property between the nozzle body 41 and the nozzle mounting pipe 12, thereby preventing oil from leaking.

Furthermore, the outer side of the top end of the oil nozzle main body 41 is sleeved with an oil nozzle pressing sheet 43, and one end, far away from the oil nozzle main body 41, of the oil nozzle pressing sheet 43 is fixed on the pump body 1 through an oil cup locking screw 45.

Furthermore, an oil cup locking screw elastic pad 44 is arranged between the oil cup locking screw 45 and the oil nozzle pressing sheet 43, so that abrasion between the oil cup locking screw 45 and the oil nozzle pressing sheet 43 can be reduced, and the oil nozzle main body 41 is firm and is not easy to loosen through the structure.

In this embodiment, the valve core cup 51 and the valve core spring 52 are both clamped in the valve core installation pipe 13, and the joint screw 53 sequentially penetrates through the valve core cup 51 and the valve core spring 52 and then is screwed and fixed at the bottom end of the valve core installation pipe 13, so that the valve core assembly 5 is stably installed in the valve core installation pipe 13.

Specifically, the head of the valve core leather cup 51 is umbrella-shaped and can be opened and closed along with the pressure change, so that the pressure maintaining effect can be achieved.

The utility model discloses a take brake master cylinder of case leather cup when using, when stepping on brake pedal, promote first piston 21 earlier through main push rod 31, first piston 21 passes through spacing seat 27, drive second spring 26 on second piston 24 and begin to compress, let the car rear wheel begin to produce earlier and brake, its elasticity is equivalent with first spring 23 when second spring 26 compresses to fourth fifth, along with the continuation promotion of main push rod 31, first spring 23 and second spring 26 compress simultaneously, the pressure of production passes through case leather cup 51 and arrives brake oil pipe again, arrive the drum brake wheel cylinder at last, thereby reach the brake braking effect; when the brake pedal is released, the previous pressure flows back into the pump body 1 of the master cylinder, the head of the valve core leather cup 51 is opened and closed along with the pressure change in an umbrella shape, when the backflow pressure is reduced to 0.5-1MPa, the valve core leather cup 51 is automatically closed, the pressure of 0.5-1MPa is always present in a brake oil pipe, and the brake effect can be generated when the pressure in a normal hydraulic brake system reaches 2MPa, so that the master cylinder can rapidly generate the brake effect compared with the traditional master cylinder without the valve core leather cup 51.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. The technical personnel of this trade should understand, the utility model does not receive the restriction of above-mentioned utility model, and what describe in above-mentioned utility model and the description only does the preferred example of the utility model to need not restrict the utility model, under the prerequisite that does not deviate from the spirit and scope of the utility model, the utility model discloses still can have various changes and improvement, these changes and improvement all fall into the scope of the utility model that claims. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a take brake master cylinder of case leather cup which characterized in that: the oil pump comprises a pump body (1), a piston assembly (2) is arranged in the pump body (1) in a sliding mode, the piston assembly (2) comprises a first piston (21), a first main leather cup (22) and a first spring (23) are sequentially arranged at the front end of the first piston (21) from back to front, a second piston (24) is arranged right in front of the first piston (21), the front end of the second piston (24) is sequentially provided with a second main leather cup (25) and a second spring (26) from back to front, a limiting seat (27) is arranged at the rear end of the second piston (24), the limiting seat (27) is connected with the first piston (21) through a connecting screw (28), a push rod assembly (3) is arranged at the rear end of the first piston (21), two oil nozzles (4) and two sets of valve core assemblies (5) are arranged on one side of the pump body (1) in a staggered mode, each oil nozzle (4) comprises an oil nozzle main body (41), the valve core assembly (5) comprises a valve core leather cup (51), a valve core spring (52) is arranged at the bottom end of the valve core leather cup (51), and a joint screw (53) is arranged in the middle of the valve core leather cup (51).

2. The master cylinder with a spool cup according to claim 1, characterized in that: the oil nozzle structure is characterized in that a cylinder pipe (11) is arranged in the middle of the pump body (1), two oil nozzle installation pipes (12) and two valve core installation pipes (13) are arranged on one side of the pump body (1) in a staggered mode, the oil nozzle installation pipes (12) and the valve core installation pipes (13) are communicated into the cylinder pipe (11), and a dust cover (14) is sleeved on the outer side of the rear end of the pump body (1).

3. The master cylinder with a spool cup according to claim 2, characterized in that: the rear end outside cover of first piston (21) is equipped with first pair leather cup (211), first pair leather cup (211) with the direction that sets up of first main leather cup (22) is the same, the outside cover of first main leather cup (22) is equipped with oil return piece (221), the rear end of first spring (23) is passed through spring holder (231) and is connected on first main leather cup (22), the front end welded fastening of first spring (23) is in the outside of spacing seat (27).

4. The master cylinder with a spool cup according to claim 3, characterized in that: the rear end outside cover of second piston (24) is equipped with the vice leather cup of second (241), the vice leather cup of second (241) with the setting opposite direction of first main leather cup (22), second main leather cup (25) with shape, the size homogeneous phase of first main leather cup (22), the rear end of second spring (26) is passed through spring holder (231) and is connected on second main leather cup (25), the front end welded fastening of second spring (26) is in on the front end inside wall of cylinder pipe (11).

5. The master cylinder with a spool cup according to claim 4, characterized in that: the front end of the limiting seat (27) is fixed on the second piston (24) through a screw, and the connecting screw (28) penetrates through the limiting seat (27) and then is in threaded connection with the front end of the first piston (21).

6. The master cylinder with a spool cup according to claim 5, characterized in that: push rod assembly (3) are including main push rod (31), main push rod (31) front end slip joint is in jar pipe (11), the front end outside cover of main push rod (31) is equipped with packing ring (32), packing ring (32) with be equipped with A type hole retaining ring (33) between the rear end lateral wall of jar pipe (11), the rear end outside of main push rod (31) is fixed with push rod cover (34) through nut (341).

7. The master cylinder with a spool cup according to claim 6, characterized in that: the head outer diameter of the first main leather cup (22) and the second main leather cup (25) is larger than or equal to the inner diameter of the cylinder pipe (11), and the head outer diameter of the first auxiliary leather cup (211) and the second auxiliary leather cup (241) is larger than or equal to the inner diameter of the cylinder pipe (11).

8. The master cylinder with a spool cup according to claim 7, characterized in that: the rotary joint of the oil nozzle main body (41) is arranged in the oil nozzle mounting pipe (12), an O-shaped sealing ring (42) is sleeved on the outer side of the lower end of the oil nozzle main body (41), and an oil nozzle pressing sheet (43) is sleeved on the outer side of the top end of the oil nozzle main body (41).

9. The master cylinder with a spool cup according to claim 8, characterized in that: one end, far away from the oil nozzle main body (41), of the oil nozzle pressing plate (43) is fixed on the pump body (1) through an oil cup locking screw (45), and an oil cup locking screw elastic pad (44) is arranged between the oil cup locking screw (45) and the oil nozzle pressing plate (43).

10. The master cylinder with a spool cup of claim 9, wherein: the valve core leather cup (51) and the valve core spring (52) are clamped in the valve core mounting pipe (13), and the joint screw (53) sequentially penetrates through the valve core leather cup (51) and the valve core spring (52) and is fixed at the bottom end of the valve core mounting pipe (13) through back threads.