阅读说明：本技术 一种分离式柱塞式制动主缸总成 (Separated plunger type brake master cylinder assembly ) 是由 康伟铭 汤宗兵 于 2020-07-30 设计创作，主要内容包括：本发明公开了一种分离式柱塞式制动主缸总成,涉及汽车零部件的技术领域,包括制动主缸缸体、前联接头总成、后联接头总成、前活塞总成及后活塞总成,制动主缸缸体为圆柱形且左右朝向设置,制动主缸缸体的内部设有贯通的圆柱形的空腔,前活塞总成和后活塞总成分别靠左和靠右设于空腔中,制动主缸缸体的顶部靠左右两边分别设有前进油口及后进油口,制动主缸缸体的前侧靠左边和中间分别设有前出油口及后出油口,前联接头总成及后联接头总成分别安装于制动主缸缸体的两边。本发明中的制动主缸总成采用缸体、前联接头及后联接头分离式的设计方案,使得机加工简单和装配方便,在装配测试不合格后便于更换零件。(The invention discloses a separated plunger type brake master cylinder assembly, which relates to the technical field of automobile parts and comprises a brake master cylinder body, a front connecting head assembly, a rear connecting head assembly, a front piston assembly and a rear piston assembly, wherein the brake master cylinder body is cylindrical and is arranged in the left-right direction, a through cylindrical cavity is arranged inside the brake master cylinder body, the front piston assembly and the rear piston assembly are respectively arranged in the cavity close to the left and close to the right, a front oil inlet and a rear oil inlet are respectively arranged at the left and right sides of the top of the brake master cylinder body, a front oil outlet and a rear oil outlet are respectively arranged at the left side and the middle of the front side of the brake master cylinder body, and the front connecting head assembly and the rear connecting head assembly are respectively arranged at the two sides of the brake master cylinder body. The brake master cylinder assembly adopts a design scheme that the cylinder body, the front coupling head and the rear coupling head are separated, so that the mechanical processing is simple, the assembly is convenient, and parts can be conveniently replaced after the assembly test is unqualified.)

1. A disconnect-type plunger brake master cylinder assembly which characterized in that: comprises a brake main cylinder body (1), a front coupling head assembly (6), a rear coupling head assembly (7), a front piston assembly (8) and a rear piston assembly (9);

the brake master cylinder body (1) is cylindrical and arranged in the left-right direction, a rectangular flange (106) is arranged on the right side of the brake master cylinder body (1), a through cylindrical cavity is arranged in the brake master cylinder body (1), the front piston assembly (8) and the rear piston assembly (9) are respectively arranged in the cavity close to the left and close to the right, a front oil inlet (101) and a rear oil inlet (102) are respectively arranged at the left side and the right side of the top of the main brake cylinder body (1), an oil inlet joint (3) is respectively connected with the front oil inlet (101) and the rear oil inlet (102) through a sealing ring (2), the oil inlet joints (3) on the left side and the right side are provided with a fixing plate (4) in a pressing way, two ends of the fixing plate (4) are connected with the brake main cylinder body (1) through locking screws (5), the front coupling head assembly (6) and the rear coupling head assembly (7) are respectively arranged on two sides of the brake main cylinder body (1).

2. The split plunger brake master cylinder assembly of claim 1, wherein: the front coupling head assembly (6) comprises a front coupling head (601) and a guide sleeve (603), the front coupling head (601) is installed on the left side of a brake main cylinder body (1) in a threaded mode, an O-shaped ring I (602) is additionally arranged at the contact position of the front coupling head (601) and the brake main cylinder body (1), the guide sleeve (603) is installed in a cavity on the inner side of the front coupling head (601), front oil through holes (603a) are uniformly distributed on the side face of the guide sleeve (603), the front oil through hole (101) and the front oil through hole (603a) are communicated with each other, an O-shaped ring II (604) is additionally arranged at the contact position of the guide sleeve (603) and the brake main cylinder body (1), a front main leather ring (605) is installed on the left end face of the guide sleeve (603), a front support seat (606) is installed on the right end face of the front coupling head (601), and the front support seat (606) and the front main leather ring (605) are, and a front auxiliary leather ring (607) is arranged on the right end face of the guide sleeve (603).

3. The split plunger brake master cylinder assembly of claim 2, wherein: the rear coupling head assembly (7) comprises a rear coupling head (701), the rear coupling head (701) is installed on the right side of the brake main cylinder body (1) in a threaded mode, three O-shaped rings (702) are additionally arranged at the contact position of the rear coupling head (701) and the brake main cylinder body (1), rear oil through holes (701a) are evenly distributed in the side wall of the rear coupling head (701), a rear oil inlet (102) and the rear oil through holes (701a) are communicated with each other, a rear main leather collar (703) is installed on the left end face of the rear coupling head (701), a rear supporting seat (704) is installed on the left side of the rear main leather collar (703) of the brake main cylinder body (1), the rear supporting seat (704) is clamped with the rear main leather collar (703), and a through groove is formed in the center of the rear coupling head (701) and a rear auxiliary leather collar (705) is embedded in the inner wall of the through groove.

4. A split plunger brake master cylinder assembly as defined in claim 3, wherein: the front piston assembly (8) comprises a front piston (801), a front return spring (802) and a front spring seat (803), the front piston (801) is in sliding fit with a guide sleeve (603), a section of necking is arranged at the left end of the front piston (801), front mounting grooves (801a) and front mounting grooves (801b) are respectively arranged on the left side and the right side of the front piston (801), a cylindrical protrusion is arranged at the center of each front mounting groove (801a) and sleeved with the front return spring (802), the front spring seat (803) is inserted into the left side of the front return spring (802) and connected with the front piston (801) through a front extension screw (804), front through holes (803a) are uniformly distributed in the side wall of the front spring seat (803), and the front spring seat (803) is abutted to a front coupling head (601).

5. The split plunger brake master cylinder assembly of claim 4, wherein: the rear piston assembly (9) comprises a rear piston (901), a rear return spring (902) and a rear spring seat (903), the rear piston (901) is in sliding fit with a rear coupling head (701), a section of necking is arranged at the left end of the rear piston (901), rear mounting grooves (901a) and rear mounting grooves (901b) are respectively formed in the left side and the right side of the rear piston (901), a cylindrical protrusion is arranged at the center of each rear mounting groove (901a) and sleeved with the rear return spring (902), the rear spring seat (903) is inserted into the left side of the rear return spring (902) and connected with the rear piston (901) through rear extension screws (804), rear through holes (903a) are uniformly distributed in the side wall of the rear spring seat (903), and the rear spring seat (903) is abutted against the front piston (801).

6. The split plunger brake master cylinder assembly of claim 5, wherein: the front side, close to the left side and the middle of the main brake cylinder body (1), is provided with a front oil outlet (103) and a rear oil outlet (104) respectively, and the front oil outlet (103) and the rear oil outlet (104) are in threaded connection with plugs (105) respectively.

Technical Field

The invention relates to the technical field of automobile parts, in particular to a separated plunger type brake master cylinder assembly.

Background

The original design of the brake master cylinder related in the application is that the cylinder body, the front coupling head and the rear coupling head are designed into a whole, but because the size of the inner hole of the cylinder opening is small, the size of the inner diameter in the middle of the cylinder body is large, the machining and the assembly are difficult, and the parts are difficult to replace after the assembly test is unqualified. In addition, the piston in the original design of the brake master cylinder related to the application is not a plunger design, an annular groove needs to be machined on the piston and a sealing ring needs to be sleeved on the piston, the requirement on the machining process is high, in addition, a compensation hole with phi of 0.7mm needs to be machined on the cylinder body, but the machining process difficulty of the small hole is high, the quality is difficult to control, and the qualified rate is low.

Disclosure of Invention

The invention aims to provide a separated plunger type brake master cylinder assembly to solve the defects caused in the prior art.

A separated plunger type brake master cylinder assembly comprises a brake master cylinder body, a front coupling head assembly, a rear coupling head assembly, a front piston assembly and a rear piston assembly;

the brake master cylinder body is cylindrical and is arranged towards the left and right, a rectangular flange plate is arranged on the right of the brake master cylinder body, a through cylindrical cavity is arranged inside the brake master cylinder body, the front piston assembly and the rear piston assembly are respectively arranged in the cavity close to the left and close to the right, a front oil inlet and a rear oil inlet are respectively arranged on the left and right sides of the top of the brake master cylinder body, an oil inlet joint is connected to the front oil inlet and the rear oil inlet through a sealing ring, fixing plates are arranged on the oil inlet joints on the left side and the right side in a pressing mode, two ends of each fixing plate are connected with the brake master cylinder body through locking screws, and the front connecting head assembly and the rear connecting head assembly are respectively arranged on two sides of the brake master cylinder body.

Preferably, preceding coupling head assembly includes preceding coupling head and uide bushing, preceding coupling head threaded mounting is in the left side of brake master cylinder body, the contact department of preceding coupling head and brake master cylinder body installs O type circle one additional, the uide bushing is installed in the inboard cavity of preceding coupling head, the side equipartition of uide bushing has preceding oil through hole, advance between hydraulic fluid port and the preceding oil through hole and link up each other, the contact department of uide bushing and brake master cylinder body installs O type circle two additional, preceding main leather collar is installed to the left end face of uide bushing, preceding supporting seat is installed to the right-hand member face of preceding coupling head, clamp between preceding supporting seat and the preceding main leather collar, vice leather collar before the right-hand member face of uide bushing installs.

Preferably, back coupling head assembly includes back coupling head, back coupling head threaded mounting is on the right side of brake master cylinder body, the contact department of back coupling head and brake master cylinder body adds and is equipped with O type circle three, the lateral wall equipartition of back coupling head has back oil through hole, link up each other between back oil port and the back oil through hole, back main apron is installed to the left end face of back coupling head, back supporting seat is installed in the left side of back main apron to brake master cylinder body, clamp between back supporting seat and the back main apron, the center department of back coupling head is equipped with logical groove and has inlayed the vice apron in back on the inner wall that leads to the groove.

Preferably, preceding piston assembly includes preceding piston, preceding reset spring and preceding spring holder, sliding fit between preceding piston and the uide bushing to the left end of preceding piston is equipped with one section necking down, the left and right sides of preceding piston is equipped with preceding mounting groove and preceding holding tank respectively, the center department of preceding mounting groove is equipped with cylindrical protrusion and overlaps and is equipped with preceding reset spring, preceding spring holder cartridge is connected with preceding piston in the left side of preceding reset spring and through preceding extension screw, the equipartition has preceding through-hole on the lateral wall of preceding spring holder, butt between preceding spring holder and the preceding coupling head.

Preferably, back piston assembly includes back piston, back reset spring and back spring holder, sliding fit between back piston and the back coupling head to the left end of back piston is equipped with one section necking down, the left and right sides of back piston is equipped with back mounting groove and back holding tank respectively, the center department of back mounting groove is equipped with cylindrical protrusion and overlaps and is equipped with back reset spring, back spring holder cartridge is in back reset spring's left side and through back extension screw and back piston connection, the equipartition has the back to link up the mouth on the lateral wall of back spring holder, the butt between back spring holder and the preceding piston.

Preferably, a front oil outlet and a rear oil outlet are respectively arranged near the left side and in the middle of the front side of the main cylinder body of the brake main cylinder, and plugs are respectively connected to the front oil outlet and the rear oil outlet in a threaded manner.

The invention has the advantages that: the working principle and the working process of the separated plunger type brake master cylinder assembly are as follows:

the rear piston is pushed by the push rod to move towards the left, the front return spring and the rear return spring are compressed, high-pressure environments are respectively established on the left side of the front piston and the left side of the rear piston, brake oil at the front return spring and the rear return spring is respectively output through the front oil outlet and the rear oil outlet, and is sent to a brake wheel cylinder of each wheel through a brake pipeline, and then is converted into wheel braking force through a wheel brake. When the thrust applied to the push rod is removed, the front piston returns to the initial position under the elastic force action of the front return spring, the rear piston returns to the initial position under the elastic force action of the rear return spring, low-pressure environments can be respectively established on the left side of the front piston and the left side of the rear piston, and brake oil flows back into a cavity of a cylinder body of the brake master cylinder through a brake pipeline. In conclusion, the separated plunger type brake master cylinder assembly disclosed by the invention adopts a design scheme that the cylinder body, the front coupling head and the rear coupling head are separated, so that the machining is simple, the assembly is convenient, the parts are convenient to replace after the assembly test is unqualified, and the separated plunger type brake master cylinder assembly has the characteristics of reasonable structure, ingenious structure and good braking effect.

Drawings

Fig. 1 is a schematic structural diagram of the overall front view of the present invention.

Fig. 2 is a schematic structural view of a section a-a in fig. 1.

Fig. 3 is a schematic overall top view of the present invention.

Fig. 4 is a schematic structural view of a section B-B in fig. 2.

Fig. 5 is a schematic structural view of a front piston assembly in the present invention.

Fig. 6 is a schematic structural view of the rear piston assembly of the present invention.

Wherein:

1-a main brake cylinder body; 101-a front oil inlet; 102-rear oil inlet; 103-front oil outlet; 104-rear oil outlet; 105-a plug head; 106-flange plate; 2-sealing ring; 3-an oil inlet joint; 4, fixing a plate; 5-locking the screw; 6-front coupling head assembly; 601-front coupling head; 602-O-ring I; 603-a guide sleeve; 603 a-front oil through hole; 604-O-shaped ring II; 605-front main leather collar; 606-front support; 607-anterior minor apron; 7-a rear coupling head assembly; 701-rear coupling head; 701 a-a rear oil through hole; 702-O-ring three; 703-rear main leather ring; 704-rear support base; 705-rear minor apron; 8-a front piston assembly; 801-front piston; 801 a-front mounting groove; 801 b-front holding tank; 802-front return spring; 803-front spring seat; 803 a-front through opening; 804-a front extension screw; 9-a rear piston assembly; 901-rear piston; 901 a-rear mounting groove; 901 b-a back holding tank; 902-rear return spring; 903-rear spring seat; 903 a-rear through hole; 804 — rear extension screw.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.

As shown in fig. 1 to 6, a separated plunger type brake master cylinder assembly comprises a brake master cylinder body 1, a front coupling head assembly 6, a rear coupling head assembly 7, a front piston assembly 8 and a rear piston assembly 9;

the brake master cylinder body 1 is cylindrical and is arranged in a left-right direction, a rectangular flange plate 106 is arranged on the right side of the brake master cylinder body 1, a through cylindrical cavity is formed in the brake master cylinder body 1, the front piston assembly 8 and the rear piston assembly 9 are arranged in the cavity in a left-right direction respectively, a front oil inlet 101 and a rear oil inlet 102 are formed in the top of the brake master cylinder body 1 in the left-right direction respectively, the front oil inlet 101 and the rear oil inlet 102 are connected with an oil inlet connector 3 through a sealing ring 2 respectively, fixing plates 4 are arranged on the oil inlet connectors 3 on the left side and the right side in a pressing mode, two ends of each fixing plate 4 are connected with the brake master cylinder body 1 through locking screws 5, and the front connecting head assembly 6 and the rear connecting head assembly 7 are arranged on two sides of the brake master cylinder body 1 respectively. The front coupling head assembly 6 and the rear coupling head assembly 7 are detachably connected with the brake main cylinder body 1, so that the machine processing is simple and the assembly is convenient.

In the invention, the front coupling head assembly 6 comprises a front coupling head 601 and a guide sleeve 603, the front coupling head 601 is installed on the left side of the brake master cylinder body 1 in a threaded manner, an O-shaped ring I602 is additionally arranged at the contact position of the front coupling head 601 and the brake master cylinder body 1, the guide sleeve 603 is installed in a cavity on the inner side of the front coupling head 601, front oil through holes 603a are uniformly distributed on the side surface of the guide sleeve 603, the front oil through hole 101 and the front oil through holes 603a are communicated with each other, an O-shaped ring II 604 is additionally arranged at the contact position of the guide sleeve 603 and the brake master cylinder body 1, a front main leather collar 605 is installed on the left end surface of the guide sleeve 603, a front support seat 606 is installed on the right end surface of the front coupling head 601, a front auxiliary leather collar 607 is installed between the front support seat 606 and the front main leather collar 605 in a clamped manner. The front coupling head 601 and the brake main cylinder body 1 are detachably connected, so that machining is simple and assembly is convenient.

In the invention, the rear coupling head assembly 7 comprises a rear coupling head 701, the rear coupling head 701 is installed on the right side of the brake master cylinder body 1 in a threaded manner, an O-ring III 702 is additionally installed at the contact position of the rear coupling head 701 and the brake master cylinder body 1, rear oil through holes 701a are uniformly distributed on the side wall of the rear coupling head 701, the rear oil inlet 102 and the rear oil through holes 701a are communicated with each other, a rear main leather ring 703 is installed on the left end surface of the rear coupling head 701, a rear support seat 704 is installed on the left side of the rear main leather ring 703 of the brake master cylinder body 1, the rear support seat 704 and the rear main leather ring 703 are clamped, a through groove is arranged at the center of the rear coupling head 701, and a rear auxiliary leather ring 705 is embedded on the inner wall of the through groove. The rear coupling head 701 and the brake main cylinder body 1 are detachably connected, so that machining is simple and assembly is convenient.

In the present invention, the front piston assembly 8 includes a front piston 801, a front return spring 802 and a front spring seat 803, the front piston 801 is in sliding fit with the guide sleeve 603, a section of constriction is disposed at the left end of the front piston 801, a front mounting groove 801a and a front receiving groove 801b are respectively disposed at the left and right sides of the front piston 801, a cylindrical protrusion is disposed at the center of the front mounting groove 801a and is sleeved with the front return spring 802, the front spring seat 803 is inserted into the left side of the front return spring 802 and is connected with the front piston 801 through a front extension screw 804, front through holes 803a are uniformly distributed on the side wall of the front spring seat 803, and the front spring seat 803 is abutted against the front coupling head 601. Because the front piston 801 adopts a plunger-type design, a ring groove is not required to be processed on the surface of the front piston 801 and a sealing ring is not required to be sleeved on the surface of the front piston 801, the manufacturing process is simplified, and in addition, because a section of necking is arranged at the left end of the front piston 801, when the front main leather ring 605 is positioned at a contraction part on the front piston 801, a gap for brake oil to pass through is reserved between the front main leather ring and the front main leather ring.

In the present invention, the rear piston assembly 9 includes a rear piston 901, a rear return spring 902 and a rear spring seat 903, the rear piston 901 is in sliding fit with the rear coupling head 701, a section of constriction is disposed at the left end of the rear piston 901, a rear mounting groove 901a and a rear receiving groove 901b are respectively disposed at the left and right sides of the rear piston 901, a cylindrical protrusion is disposed at the center of the rear mounting groove 901a and is sleeved with the rear return spring 902, the rear spring seat 903 is inserted into the left side of the rear return spring 902 and is connected to the rear piston 901 through a rear extension screw 804, rear through holes 903a are uniformly distributed on the side wall of the rear spring seat 903, and the rear spring seat 903 is abutted against the front piston 801. Because the rear piston 901 is designed in a plunger manner, an annular groove does not need to be machined on the surface of the rear piston 901 and a sealing ring does not need to be sleeved on the surface of the rear piston 901, the manufacturing process is simplified, and in addition, because a section of necking is arranged at the left end of the rear piston 901, when the rear main rubber ring 703 is positioned at a contraction part on the rear piston 901, a gap for brake oil to pass through is reserved between the rear main rubber ring and the rear main rubber ring.

In the invention, a front oil outlet 103 and a rear oil outlet 104 are respectively arranged near the left side and the middle of the front side of the main cylinder body 1, and plug heads 105 are respectively connected with the front oil outlet 103 and the rear oil outlet 104 in a threaded manner. When the brake master cylinder is not used, impurities can be reduced to enter the cavity of the brake master cylinder body 1 from the corresponding hole by additionally arranging the plug head 105, the front piston 801 and the rear piston 901 are abraded, and the sealing effect is influenced.

In the invention, the working principle and the working process of the separated plunger type brake master cylinder assembly are as follows:

the rear piston 901 is pushed by the push rod to move towards the left, the front return spring 802 and the rear return spring 902 are compressed, high-pressure environments are respectively established on the left side of the front piston 801 and the left side of the rear piston 901, brake oil at the front return spring 802 and the rear return spring 902 is respectively output through the front oil outlet 103 and the rear oil outlet 104, and is sent to brake cylinders of each wheel through brake pipelines, and then is converted into wheel braking force by wheel brakes. When the pushing force applied to the push rod is removed, the front piston 801 returns to the initial position under the elastic force of the front return spring 802, the rear piston 901 returns to the initial position under the elastic force of the rear return spring 902, meanwhile, low-pressure environments are respectively established on the left side of the front piston 801 and the left side of the rear piston 901, and brake oil flows back into the cavity of the master cylinder body 1 through the brake pipeline. In conclusion, the separated plunger type brake master cylinder assembly disclosed by the invention adopts a design scheme that the cylinder body, the front coupling head and the rear coupling head are separated, so that the machining is simple, the assembly is convenient, the parts are convenient to replace after the assembly test is unqualified, and the separated plunger type brake master cylinder assembly has the characteristics of reasonable structure, ingenious structure and good braking effect.

The embodiments disclosed above are therefore to be considered in all respects as illustrative and not restrictive. All changes which come within the scope of or equivalence to the invention are intended to be embraced therein.