CN110925330B

CN110925330B - Clutch master cylinder and vehicle

Info

Publication number: CN110925330B
Application number: CN201911199167.4A
Authority: CN
Inventors: 郭静; 宋康; 袁杰
Original assignee: Anhui Jianghuai Automobile Group Corp
Current assignee: Anhui Jianghuai Automobile Group Corp
Priority date: 2019-11-29
Filing date: 2019-11-29
Publication date: 2021-04-02
Anticipated expiration: 2039-11-29
Also published as: CN110925330A

Abstract

The invention discloses a clutch master cylinder and a vehicle, the clutch master cylinder comprises: the pump body comprises a shell and a piston arranged in the shell; the pedal assembly comprises a base, a driving pedal connected with the base and a push rod rotationally connected with the driving pedal; the guide assembly, the guide assembly include the guide pin bushing and locate the slider in the guide pin bushing, and base, guide pin bushing and casing connect gradually, the one end and the piston butt of slider, the other end and the push rod butt of slider. In the invention, the guide assembly is arranged between the pump body and the pedal assembly, and the sliding block of the guide assembly absorbs the radial force applied by the push rod of the pedal assembly, so that the piston of the pump body is ensured to be only subjected to axial thrust, and the piston of the pump body is not easy to be eccentrically worn and damaged.

Description

Clutch master cylinder and vehicle

Technical Field

The invention relates to the technical field of automobiles, in particular to a clutch master cylinder and a vehicle.

Background

In the field of automotive technology, a hydraulic operating device is generally adopted for a light truck clutch operating device, and a clutch master cylinder is a main part of the hydraulic operating device. In the process of stepping on the clutch pedal to separate the clutch, the clutch pedal rotates around the pin shaft, and the clutch master cylinder piston moves along a straight line, so that the push rod of the clutch master cylinder cannot be parallel to the central line of the clutch master cylinder assembly in the motion process of the master cylinder piston, and an included angle exists between the push rod and the central line, so that the clutch master cylinder piston is eccentrically worn in the main damage mode in the use process of a vehicle.

In view of the above-mentioned drawbacks, it is necessary to provide a new clutch master cylinder and a vehicle.

Disclosure of Invention

The invention mainly aims to provide a clutch master cylinder and a vehicle, and aims to solve the problem that a piston in the clutch master cylinder is easy to be worn and damaged due to the fact that a push rod of the existing clutch master cylinder pushes the clutch master cylinder.

In order to achieve the above object, the present invention provides a clutch master cylinder including: the pump body comprises a shell and a piston arranged in the shell; the pedal assembly comprises a base, a driving pedal connected with the base and a push rod rotatably connected with the driving pedal; the guide assembly comprises a guide sleeve and a sliding block arranged in the guide sleeve, the base, the guide sleeve and the shell are sequentially connected, one end of the sliding block is abutted to the piston, and the other end of the sliding block is abutted to the push rod.

Preferably, the guide sleeve includes a guide post accommodating the slider and a first mounting seat extending outward from the guide post, and the first mounting seat is connected to the base.

Preferably, the base including the base member that has the through-hole, with the mounting bracket that the base member is connected with locate erection column on the base member, the one end of push rod is passed the through-hole, the other end of push rod with the drive footboard rotates to be connected, first mount pad insert the spliced pole with pedestal connection.

Preferably, the quantity of first mount pad is two, first mount pad include certainly the surface of guide post is towards keeping away from the first linking arm that guide post center pin direction extends, certainly first linking arm is to keeping away from the second linking arm that the mounting bracket direction extends and certainly the second linking arm is to keeping away from the third linking arm that guide post center pin direction extends, the third linking arm inserts the linking post with pedestal connection, first linking arm the second linking arm with the guide post accept in the through-hole.

Preferably, the housing includes a main body portion accommodating the piston and two second mounting seats extending outward from opposite sides of the main body portion; the second mounting seat is inserted into the mounting column, and the first mounting seat, the second mounting seat and the base body are sequentially stacked.

Preferably, the slider includes the pressure-bearing portion and the promotion portion that are connected, pressure-bearing portion with the push rod butt, the promotion portion with the piston butt, one side recess that pressure-bearing portion kept away from the promotion portion with the recess of push rod butt.

Preferably, the clutch master cylinder further comprises a bushing sleeved between the guide sleeve and the sliding block.

Preferably, the bushing includes a liner body and a skirt extending from one end of the liner body close to the pump body to the outside, and the skirt is clamped between the shell and the guide sleeve.

Preferably, the clutch master cylinder further comprises a first dustproof sleeve and a second dustproof sleeve, the first dustproof sleeve is arranged on the outer side of the joint of the shell and the guide sleeve, and the second dustproof sleeve is arranged on the outer side of the joint of the guide sleeve and the push rod.

Preferably, a vehicle includes the above-described clutch master cylinder.

In the technical scheme of the invention, the clutch master cylinder comprises: the pump body comprises a shell and a piston arranged in the shell; the pedal assembly comprises a base, a driving pedal connected with the base and a push rod rotationally connected with the driving pedal; the guide assembly, the guide assembly include the guide pin bushing and locate the slider in the guide pin bushing, and base, guide pin bushing and casing connect gradually, the one end and the piston butt of slider, the other end and the push rod butt of slider. In the invention, the guide assembly is arranged between the pump body and the pedal assembly, when a driving pedal of the pedal assembly is stepped, the driving pedal transmits driving force to the push rod connected with the driving pedal, the push rod converts and transmits the driving force to the slide block of the guide assembly, and then the slide block pushes the piston of the pump body, so that the push rod of the pedal assembly does not directly act on the piston of the pump body, and the piston is indirectly transmitted through the slide block of the guide assembly.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

FIG. 1 is a schematic cross-sectional view of a clutch master cylinder of the present invention;

FIG. 2 is a schematic diagram of the clutch master pump of the present invention;

FIG. 3 is a schematic structural view of the guide sleeve of the present invention;

FIG. 4 is a schematic structural diagram of a slider according to the present invention;

FIG. 5 is a schematic view of the construction of the bushing of the present invention;

fig. 6 is an exploded view of the clutch master cylinder of the present invention.

The reference numbers illustrate:

reference numerals	Name (R)	Reference numerals	Name (R)
				1	Pump body	311	Guide post
11	Shell body	312	First mounting seat
				111	Main body part	313	First connecting arm
112	Second mounting seat	314	Second connecting arm
				12	Piston	315	Third connecting arm
2	Pedal assembly	32	Sliding block
				21	Base seat	321	Bearing part
211	Base body	322	Push part
				212	Mounting rack	323	Groove
213	Mounting post	4	Bushing
				214	Through hole	41	Lining body
22	Driving pedal	42	Skirt edge
				23	Push rod	5	First dust-proof cover
3	Guide assembly	6	Second dust-proof cover
				31	Guide sleeve

The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.

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.

It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.

In addition, the descriptions related to "first", "second", etc. in the present invention are only for descriptive purposes 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 at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "connected," "secured," and the like are to be construed broadly, and for example, "secured" may be a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In addition, the technical solutions in the embodiments of the present invention may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination of technical solutions should not be considered to exist, and is not within the protection scope of the present invention.

The invention provides a clutch master cylinder and a vehicle, and aims to solve the problem that a push rod of the existing clutch master cylinder cannot be parallel to a central line of a clutch master cylinder assembly, so that a piston is damaged due to eccentric wear.

Referring to fig. 1, the clutch master cylinder includes: the pump comprises a pump body 1, a pedal assembly 2 and a guide assembly 3, wherein the pump body 1 comprises a shell 11 and a piston 12 arranged in the shell 11; the pedal assembly 2 comprises a base 21, a driving pedal 22 connected with the base 21 and a push rod 23 rotatably connected with the driving pedal 22; the guide assembly 3 comprises a guide sleeve 31 and a sliding block 32 arranged in the guide sleeve 31, the base 21, the guide sleeve 31 and the shell 11 are sequentially connected, one end of the sliding block 32 is abutted to the piston 12, and the other end of the sliding block 32 is abutted to the push rod 23.

According to the clutch master cylinder, the guide assembly 3 is arranged between the pump body 1 and the pedal assembly 2, when the drive pedal 22 of the pedal assembly 2 is stepped, the drive pedal 22 transmits the drive force to the push rod 23 connected with the drive pedal 22, the push rod 23 converts the drive force and transmits the drive force to the slide block 32 of the guide assembly 3, and then the slide block 32 pushes the piston 12 of the pump body 1, so that the push rod 23 of the pedal assembly 2 does not directly act on the piston 12 of the pump body 1, the drive force is indirectly transmitted through the slide block 32 of the guide assembly 3, and the slide block 32 of the guide assembly 3 absorbs the radial force applied by the push rod 23 of the pedal assembly 2, so that the piston 12 of the pump body 1 is ensured to be only subjected to axial thrust, and the piston 12 of the pump body 1 is not easy to be damaged by eccentric wear.

Referring to fig. 3, the guide sleeve 31 includes a guide post 311 for accommodating the slider 32 and a first mounting seat 312 extending from the guide post 311 to the outside, and the first mounting seat 312 is connected to the base 21. In an embodiment, the guide sleeve 31 includes a guide post 311 and a first mounting seat 312, the guide post 311 has a circular hole formed therethrough, the slider 32 passes through the circular hole of the guide post 311, and the first mounting seat 312 is disposed corresponding to a mounting position on the base 21. In addition, the guide sleeve 31 can be made of common structural steel, the first mounting seat 312 and the guide column 311 can be connected by adopting a welding process, and the guide sleeve 31 can be directly injection-molded by adopting engineering plastics, so that the first mounting seat 312 and the guide column 311 are integrally molded.

Further, as shown in fig. 2 and 6, the base 21 includes a base 211 having a through hole 214, a mounting bracket 212 connected to the base 211, and a mounting post 213 provided on the base 211, one end of the push rod 23 passes through the through hole 214, the other end of the push rod 23 is rotatably connected to the driving pedal 22, and the first mounting seat 312 is inserted into the connecting post to be connected to the base 21. Through-hole 214 has been seted up on base member 211, guide post 311 passes through-hole 214 on the base member 211, the terminal surface of base member 211 is provided with erection column 213, set up the via hole that corresponds with erection column 213 on the first mount pad 312, the via hole on the first mount pad 312 is passed to erection column 213, mounting bracket 212 is connected with base member 211, the one end of push rod 23 passes through-hole 214 on the base member 211 and with slider 32 butt, the other end of push rod 23 is connected with the rotation of drive footboard 22. Through setting up the base 211 that has through-hole 314 to make guide post 311 pass through-hole 314, make base 211 cover establish in the guide post 311 the outside, be favorable to increasing the stability of structure.

As shown in fig. 3, the number of the first mounting seats 312 is two, the first mounting seat 312 includes a first connecting arm 313 extending from the outer surface of the guide post 311 in a direction away from the central axis of the guide post 311, a second connecting arm 314 extending from the first connecting arm 313 in a direction away from the mounting bracket 212, and a third connecting arm 315 extending from the second connecting arm 314 in a direction away from the central axis of the guide post 311, the third connecting arm 315 is inserted into the connecting post and connected to the base 21, and the first connecting arm 313, the second connecting arm 314, and the guide post 311 are accommodated in the through hole 214. In one embodiment, there are two mounting posts 213 on the base 211, the first mounting seat 312 is correspondingly connected to the mounting posts 213, that is, the first mounting seat 312 is provided in two, the first mounting seat 312 includes a first connecting arm 313 extending from the outer surface of the guiding post 311 in a direction away from the central axis of the guiding post 311, a second connecting arm 314 extending from the first connecting arm 313 in a direction away from the mounting frame 212, and a third connecting arm 315 extending from the second connecting arm 314 in a direction away from the central axis of the guiding post 311, a through hole is provided on the third connecting arm 315, the two mounting posts 213 on the base 211 are correspondingly inserted into the through holes on the third connecting arm 315, and the first connecting arm 313, the second connecting arm 314, and the guiding post 311 are accommodated in the through hole 214 of the base 211, so that the overall structure is compact and occupies a small space.

As shown in fig. 2, the housing 11 includes a main body 111 for accommodating the piston 12 and two second mounting seats 112 extending from opposite sides of the main body 111 to the outside; the second mounting base 112 is inserted into the mounting post 213, and the first mounting base 312, the second mounting base 112, and the base 211 are stacked in this order. The housing 11 includes a main body 111 and two second mounting seats 112 extending from opposite sides of the main body 111 to the outside, the main body 111 has an accommodating space, the piston 12 slides in the accommodating space of the main body 111, the two second mounting seats 112 of the housing 11 are respectively provided with a via hole, the two mounting posts 213 on the base 211 are respectively inserted into the via holes of the two second mounting seats 112, during assembly, the via holes of the two first mounting seats 312 are respectively sleeved on the two mounting posts 213 of the base 211, the free ends of the two mounting posts 213 expose the first mounting seats 312, the via holes of the two second mounting seats 112 are sleeved on one ends of the two mounting posts 213 exposing the first mounting seats 312, and then the nut lock-up mounting posts 213 expose one end of the second mounting seats 112. The assembly is overlapped, so that the disassembly and the assembly of the parts are more convenient and time-saving.

Further, as shown in fig. 1 and 4, the slider 32 includes a pressure-receiving portion 321 and a pushing portion 322 connected to each other, the pressure-receiving portion 321 abuts against the push rod 23, the pushing portion 322 abuts against the piston 12, and one side of the pressure-receiving portion 321, which is far away from the pushing portion 322, is recessed into a groove 323 which abuts against the push rod 23. In one embodiment, the sliding block 32 is made of gray cast iron with good wear resistance.

In addition, in the above embodiment, the clutch master cylinder further includes the bushing 4 sleeved between the guide sleeve 31 and the slider 32. The bush 4 adopts the better material of wearability, like nylon, race steel etc. the nylon bush 4 is not only wear-resisting, has fine lubricity moreover, and coefficient of friction is low, can avoid the too fast wearing and tearing of slider 32, keeps the clutch pedal to obtain higher mechanical efficiency in the course of the work. In addition, lubricating grease can be used for lubricating between the sliding block 32 and the bush 4, so that the guide assembly 3 has better wear resistance and long service life.

In a preferred embodiment, as shown in fig. 5, the bushing 4 includes a bushing body 41 and a skirt 42 extending from an end of the bushing body 41 close to the pump body 1 to the outside, and the skirt 42 is clamped between the housing 11 and the guide sleeve 31. The liner 41 is provided with a guide hole, the slider 32 passes through the guide hole of the liner 41, the skirt 42 is formed by extending the end of the liner 41 close to the pump body 1 to the outside, the skirt 42 is clamped between the main body 111 and the guide post 311, and when the first mounting seat 312 and the second mounting seat 112 are fixed on the positioning post of the base 21, the skirt 42 of the liner 4 is also clamped and positioned by the main body 111 and the guide post 311.

Further, as shown in fig. 6, the clutch master cylinder further includes a first dust-proof sleeve 5 and a second dust-proof sleeve 6, the first dust-proof sleeve 5 is disposed outside the joint between the housing 11 and the guide sleeve 31, and the second dust-proof sleeve 6 is disposed outside the joint between the guide sleeve 31 and the push rod 23. In an embodiment, the first dust-proof sleeve 5 and the second dust-proof sleeve 6 may be made of rubber sealing material, one end of the first dust-proof sleeve 5 is sleeved outside the main body 111 of the pump body 1, the other end of the first dust-proof sleeve 5 is sleeved outside the guide post 311, so as to prevent dust and the like from entering the pump body 1 and the guide post 311 from the abutting gap between the main body 111 and the guide post 311, one end of the second dust-proof sleeve 6 is sleeved on one end of the guide post 311 away from the pump body 1, the other end of the second dust-proof sleeve 6 is provided with a via hole, the push rod 23 passes through the via hole of the second dust-proof sleeve 6, and the via hole of the second dust-proof sleeve 6 tightly wraps the push rod 23, so as to prevent dust and the like from entering the guide post 311 from.

In addition, a vehicle includes the above-described clutch master cylinder. Above-mentioned clutch master cylinder is through setting up direction assembly 3 between the pump body 1 and footboard assembly 2 for the conversion is passed through direction assembly 3 to the power of footboard assembly 2, and rethread direction assembly 3 exerts the motive force to the pump body 1, thereby makes the difficult wearing and tearing of pump body 1 piston 12, improves body life, and a vehicle adopts the operation reliability that above-mentioned clutch master cylinder can improve whole car.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. A clutch master cylinder, comprising:

the pump body comprises a shell and a piston arranged in the shell;

the pedal assembly comprises a base, a driving pedal connected with the base and a push rod rotatably connected with the driving pedal;

the guide assembly comprises a guide sleeve and a sliding block arranged in the guide sleeve, the base, the guide sleeve and the shell are sequentially connected, one end of the sliding block is abutted to the piston, the other end of the sliding block is abutted to the push rod, the guide sleeve comprises a guide column for accommodating the sliding block and a first mounting seat extending outwards from the guide column, the first mounting seat is connected with the base, the base comprises a base body with a through hole, a mounting frame connected with the base body and a mounting column arranged on the base body, one end of the push rod penetrates through the through hole, the other end of the push rod is rotatably connected with the driving pedal, the first mounting seat is inserted into the connecting column and connected with the base, the number of the first mounting seats is two, and the first mounting seat comprises a first connecting arm extending from the outer surface of the guide column to the direction far away from the central axis of the guide column, From first linking arm is to keeping away from the second linking arm that the mounting bracket direction extends and certainly the second linking arm is to keeping away from the third linking arm that the guide post center pin direction extends, the third linking arm inserts the spliced pole with the pedestal connection, first linking arm the second linking arm with the guide post accept in the through-hole.

2. The clutch master cylinder as claimed in claim 1, wherein the housing includes a main body portion accommodating the piston and two second mounting seats extending outwardly from opposite sides of the main body portion; the second mounting seat is inserted into the mounting column, and the first mounting seat, the second mounting seat and the base body are sequentially stacked.

3. The clutch master cylinder as claimed in claim 1, wherein the slider includes a pressure receiving portion and a pushing portion connected to each other, the pressure receiving portion abuts against the push rod, the pushing portion abuts against the piston, and a side of the pressure receiving portion remote from the pushing portion is recessed into a groove abutting against the push rod.

4. The clutch master cylinder as claimed in claim 1, further comprising a bushing interposed between the guide bush and the slider.

5. The clutch master cylinder as claimed in claim 4, wherein said bushing includes a liner body and a skirt extending outwardly from an end of said liner body adjacent to said pump body, said skirt being sandwiched between said housing and said guide bush.

6. The clutch master cylinder according to any one of claims 1 to 5, further comprising a first dust-proof sleeve and a second dust-proof sleeve, wherein the first dust-proof sleeve is disposed outside a joint of the housing and the guide sleeve, and the second dust-proof sleeve is disposed outside a joint of the guide sleeve and the push rod.

7. A vehicle, characterized in that the vehicle comprises a master clutch pump according to any one of claims 1 to 6.