CN115805925B - Brake master cylinder - Google Patents

Abstract

The application discloses brake master cylinder, including the pump body that is equipped with pumping chamber, oil feed pipeline and play oil pipe way, still include pumping device, it includes a plurality of pumping units and a power unit for with pumping intracavity fluid to play oil pipe way pumping, each pumping unit is around the radial interval distribution of pump body, pumping unit includes: the mounting hole is communicated with the pumping cavity through the connecting channel; a fixed piston detachably installed in the installation hole; the pumping piece, but movable mounting is on fixed piston for pump oil to oil outlet pipeline under the power unit drive, in daily use, through adopting above-mentioned technical scheme, oil gets into pumping chamber and connecting channel from the oil feed pipeline, and power unit operation, drive pumping piece reciprocating motion in the mounting hole, pump oil into out the oil pipe way with the oil pump, through making each pumping unit radially set up around the pump body, make the length of brake master cylinder reduce, conveniently arrange, and the fluid output is more linear.

Description

Brake master cylinder

Technical Field

The invention relates to a brake master cylinder.

Background

The brake system of the motorcycle and the electric locomotive mainly comprises a brake master cylinder, a brake oil pipe and a brake caliper, wherein the brake mode is divided into a drum brake and a disc brake, and the friction force is mainly utilized to convert kinetic energy into heat energy and disperse the heat energy in the air except for a part of the caliper and a slight difference of the brake mode, so that the vehicle can achieve the function of decelerating or stopping. The master cylinder and the clutch master cylinder are main accessories on the automobile braking system, for example:

the technical scheme recorded in the Chinese patent of the invention is as follows: through adjusting the length of first piston rod, and then adjust the idle running length of first piston in the cylinder body to adjust the sensitivity of brake master cylinder, when first piston rod is longer, the idle running of first piston rod is short, and brake sensitivity is high, and when first piston rod is shorter, the idle running of first piston rod is long, and brake sensitivity is low, through adjusting the length of first piston rod, selects a suitable brake sensitivity for the user, and this technical scheme has following defect:

1. the plurality of piston assemblies are coaxially arranged, so that the length of the cylinder body is large, and the arrangement of the brake master cylinder is inconvenient;

2. the plurality of piston assemblies synchronously move in the same direction when in operation, so that the impact force direction is concentrated, and the vibration generated when in operation is large;

3. when one piston assembly rubs against the inner wall of the cylinder body to generate scraps under the long-time operation, the tightness between each piston assembly and the cylinder body can be influenced, and the brake sensitivity is reduced or even fails.

Disclosure of Invention

The invention aims to solve one of the technical problems existing in the prior art.

The application provides a brake master cylinder, including the pump body that is equipped with pumping chamber, oil feed pipeline and play oil pipe way, still include:

the pumping device comprises a plurality of pumping units and a power unit and is used for pumping oil in the pumping cavity to the oil outlet pipeline;

wherein each pumping unit is radially spaced around the pump body.

The pumping unit includes:

the mounting hole is communicated with the pumping cavity through the connecting channel;

a fixed piston detachably installed in the installation hole;

and the pumping piece is movably arranged in the fixed piston and is used for pumping oil to the oil outlet pipeline under the drive of the power unit.

The pumping member includes:

a pumping plunger movably mounted at an inner end of the fixed piston through a pumping hole;

the drainage unit is communicated with the inner end of the pumping hole and the oil outlet pipeline;

and the unidirectional transfusion unit is used for pumping oil into the pumping hole when the pumping plunger moves.

The pumping member further comprises:

the fixed ring is arranged at the inner end of the pumping plunger through the arrangement of the clamping ring and the anti-drop ring groove;

and the first reset spring is sleeved on the outer side of the pumping plunger, and two ends of the first reset spring are respectively abutted with the outer end of the fixed ring and the inner end of the fixed piston.

The drainage unit includes:

the drainage ring groove is arranged around the mounting hole and communicated with the oil outlet pipeline;

and the non-return unit is connected with the drainage ring groove and the pumping hole and used for preventing oil from flowing back to the pumping hole.

The power unit includes:

the pump shaft is rotatably arranged in the pumping cavity through a bearing and is driven by a motor;

the sealing unit is arranged between the outer end of the pumping cavity and the pump shaft;

and the bulge part is arranged in the middle of the pump shaft and pushes the pumping plunger when the pump shaft rotates.

Further comprises:

the pressure stabilizing tube is arranged at the outlet end of the oil outlet pipeline;

an oil outlet communicated with the pressure stabilizing tube;

and the voltage stabilizer is arranged at the outer end of the voltage stabilizing tube and used for maintaining the pressure of oil in the voltage stabilizing tube.

The voltage stabilizer includes:

the top end of the pressure stabilizing shell is provided with an inflation valve, and the bottom end of the pressure stabilizing shell is communicated with the pressure stabilizing tube;

a pressure stabilizing piston movably installed in the pressure stabilizing case;

the sealing rings are provided with a plurality of sealing rings and are respectively embedded on the peripheral wall of the pressure-stabilizing piston;

the quick detach mechanism is used for enabling the bottom end of the pressure stabilizing shell to be detachably connected with the pressure stabilizing pipeline.

The quick detach mechanism includes:

the shell is sleeved at the bottom end of the voltage stabilizing shell;

the driving unit comprises a double-sided gear ring and a plurality of lifting pieces which are lifted along with the rotation of the double-sided gear ring;

the clamping grooves are arranged on the outer peripheral wall of the outer end of the voltage stabilizing tube at intervals;

and a plurality of clamping units are in transmission connection with each lifting piece and are clamped with or separated from each clamping groove along with the lifting of the lifting piece.

The quick release mechanism further comprises:

the sealing ring groove is arranged on the peripheral wall of the voltage stabilizing tube and is connected with the outer end face;

the sealing sleeve is sleeved on the sealing ring groove and the pressure stabilizing tube;

the through grooves are arranged at intervals at the bottom of the peripheral wall of the pressure stabilizing shell and correspond to the sealing ring grooves;

the telescopic pieces are slidably arranged in the through grooves;

wherein, each expansion piece is connected with each lifting piece in a transmission way and slides in the through groove along with the lifting of the lifting piece.

The beneficial effects of the invention are as follows:

1. the whole length of the brake master cylinder is shortened, the mass and the gravity center are concentrated, and the arrangement is convenient by arranging the pumping cavity, the power unit and a plurality of pumping units which are radially distributed at intervals around the pump body;

2. by arranging the power unit and the pumping units comprising the mounting holes, the fixed pistons, the pumping plungers, the pumping holes, the drainage unit and the unidirectional infusion unit, when the power unit operates, the pumping plungers radially distributed around the pump body have different movement directions, and vibration generated during operation is dispersed;

3. each pumping unit and one power unit are connected in parallel, each pumping plunger operates in each corresponding pumping hole, so that a plurality of pumping plungers are prevented from being failed at the same time, sufficient redundancy is provided, and the operation stability of the brake master cylinder is ensured;

4. through the setting of stabiliser, unnecessary high pressure fluid is stored to can be when the oil pressure in delivery line, steady voltage pipe and the oil-out descends with high pressure fluid discharge, compensate, keep the oil pressure, guarantee the braking effect.

Drawings

FIG. 1 is a front view of a master cylinder according to an embodiment of the present application;

FIG. 2 is a bottom view of the master cylinder according to the embodiment of the present application;

FIG. 3 is a schematic view of the cross-sectional structure in the direction A-A in FIG. 2;

FIG. 4 is a top view of a master cylinder according to an embodiment of the present application;

FIG. 5 is a schematic view of the cross-sectional structure in the direction B-B in FIG. 4;

FIG. 6 is a schematic view of the cross-sectional structure in the direction C-C in FIG. 4;

FIG. 7 is a schematic view of the structure of FIG. 6 at D in a partially enlarged manner;

FIG. 8 is a schematic diagram of a voltage regulator according to an embodiment of the present application;

FIG. 9 is a schematic view of the structure of FIG. 8 in enlarged detail E;

FIG. 10 is a schematic view of the cross-sectional structure in the F-F direction of FIG. 8.

Reference numerals

101-pumping chamber, 102-oil inlet pipe, 103-oil outlet pipe, 104-pressure stabilizing pipe, 105-oil outlet, 106-concave part, 107-pump body, 2-pumping unit, 201-mounting hole, 202-fixed piston, 203-pumping plunger, 204-fixed ring, 205-clasp, 206-anti-drop ring groove, 207-return spring I, 208-pumping hole, 3-power unit, 301-pump shaft, 302-ball bearing, 303-wave spring gasket, 304-balance block, 305-convex part, 306-needle bearing, 4-drainage ring groove, 5-one-way infusion unit, 501-vertical hole, 502-horizontal hole, 503-housing, 504-drainage hole I, 505-liquid inlet hole I, 506-steel ball I6-sealing unit, 601-inner frame oil seal, 602-oil seal gasket, 7-stabilizer, 701-pressure stabilizing shell, 702-pressure stabilizing piston, 703-sealing ring, 704-inflation valve, quick release mechanism, 801-housing, 802-clamping groove, 803-sealing ring groove, 804-sealing sleeve, 805-through groove, 9-driving unit, 901-double sided ring gear, 902-rotating shaft, 903-inner hexagonal groove, 904-worm, 905-gear shaft, 906-gear, 907-lifting hole, 10-lifting member, 1001-lifting rod, 1002-chute, 1003-driving column, 1004-limiting groove, 1005-limiting rod, 11-clamping unit, 1101-communicating groove, 1102-swinging clamping plate, 1103-pin shaft, 1104-reset arc groove, 1105-reset block, 1106-reset spring three, 12-non-return unit, 1201-non-return groove one, 1202-communication hole, 1203-mounting frame one, 1204-steel ball two, 1205-reset spring two, 1301-non-return groove two, 1302-mounting frame two, 1303-non-return pipe sleeve, 1304-drain hole two, 1305-liquid inlet two, 1306-steel ball three, 14-telescopic piece, 1401-telescopic slide block, 1402-transmission groove, 1403-chute two, 1404-transmission column two.

Detailed Description

Technical solutions in the embodiments of the present application will be clearly described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application are within the scope of the protection of the present application.

The terms first, second and the like in the description and in the claims, are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged, as appropriate, such that embodiments of the present application may be implemented in sequences other than those illustrated or described herein, and that the objects identified by "first," "second," etc. are generally of a type and not limited to the number of objects, e.g., the first object may be one or more. Furthermore, in the description and claims, "and/or" means at least one of the connected objects, and the character "/", generally means that the associated object is an "or" relationship.

The server provided in the embodiment of the present application is described in detail below with reference to the accompanying drawings by means of specific embodiments and application scenarios thereof.

Example 1:

as shown in fig. 1 to 5, the embodiment of the present application provides a brake master cylinder, which includes a pump body 107 provided with a pumping chamber 101, an oil inlet pipeline 102 and an oil outlet pipeline 103, and further includes a pumping device, which includes a plurality of pumping units 2 and a power unit 3, and is used for pumping oil in the pumping chamber 101 to the oil outlet pipeline 103, where the pumping units 2 are radially distributed around the pump body 107 at intervals.

Further, the pumping unit 2 includes a mounting hole 201 communicating with the pumping chamber 101 through a connection passage; a fixed piston 202 detachably installed in the installation hole 201; a pumping member movably mounted in the stationary piston 202 for pumping oil to the oil outlet line 103 under the drive of the power unit 3.

In this embodiment of the present application, due to the above-mentioned structure, the oil inlet pipe 102 is communicated with the external oil storage container (not shown in the figure), the level of the external oil storage container must be higher than the height of the pumping cavity 101, or there is an external force to pressurize the oil in the external oil storage container, so that the oil in the external oil storage container can continuously enter the pumping cavity 101 through the oil inlet pipe 102, and the power unit 3 operates when receiving an external brake signal, and pushes each pumping member to operate, so that the oil in the pumping cavity 101 is pumped into the oil outlet pipe 103.

Example 2:

as shown in fig. 3, in this embodiment, in addition to including the structural features of the previous embodiments, the pumping member includes a pumping plunger 203 movably mounted to the inner end of the stationary piston 202 through a pumping bore 208; a drainage unit 4 which communicates the inner end of the pumping hole 208 with the oil outlet pipe 103; and the unidirectional transfusion unit 5 is used for pumping oil into the pumping hole 208 when the pumping plunger 203 moves.

The unidirectional infusion unit 5 comprises a vertical hole 501 which penetrates the inner end of the pumping plunger 203 up and down; a transverse bore 502 communicating the vertical bore 501 with the outer end face of the pumping plunger 203; a housing 503, which is mounted at the outer end of the pumping plunger 203, the periphery is provided with a first liquid discharging hole 504, and the end is provided with a first liquid inlet hole 505; ball one 506, which is disposed within the housing 503.

Further, the pumping member further comprises a fixed ring 204 which is arranged at the inner end of the pumping plunger 203 through a clamping ring 205 and an anti-drop ring groove 206; and a first return spring 207 sleeved on the outer side of the pumping plunger 203, and two ends of the first return spring are respectively abutted against the outer end of the fixed ring 204 and the inner end of the fixed piston 202.

Further, the drainage unit 4 includes a drainage ring groove 401, which is disposed around the mounting hole 201 and communicates with the oil outlet pipe 103; the non-return unit 12 connects the drainage ring groove 401 with the pumping hole 208, and prevents the oil from flowing back into the pumping hole 208.

Further, the non-return unit 12 includes a non-return groove 1201 provided on the outer wall of the fixed piston 202, the bottom end of which communicates with the drainage ring groove 401; a communication hole 1202 for communicating the check groove one 1201 with the pumping hole 208; the first mounting frame 1203 is opened at the top end and hollowed out at the bottom end, and is arranged in the first non-return groove 1201; and a second steel ball 1204 which is mounted on the first mounting bracket 1203 via a second return spring 1205 for blocking the communication hole 1202.

In this embodiment of the present application, due to the above structure, when the power unit 3 operates, the pumping plunger 203 is intermittently pushed, and when the pumping plunger 203 is pushed, the pumping plunger 203 is moved to the inner end of the pumping hole 208, at this time, the first return spring 207 is compressed and shortened, and stores elastic potential energy, meanwhile, oil in the inner end of the pumping hole 208 enters the housing 503 from the first liquid inlet hole 505, the first steel ball 506 is pushed to move toward the end of the transverse hole 502, and at the same time, the pumping plunger 203 approaches the first steel ball 506, the first steel ball 506 is finally abutted to the inner end of the transverse hole 502, the transverse hole 502 is closed, as the pumping plunger 203 continues to go deep into the pumping hole 208, the pressure of the oil in the pumping hole 208 increases until the second steel ball 1204 is pushed away from the lower end of the communication hole 1202, the oil in the pumping hole 208 enters the check groove 1201 through the gap between the communication hole 1202 and the second steel ball 1204, at this time, the second return spring 1205 is shortened, stores elastic potential energy, and enters the oil outlet pipeline 103 after passing through the hollow position and the drainage ring groove 401 at the bottom of the mounting frame; then the power unit 3 and the pumping plunger 203 are disconnected from transmission, at the moment, the first return spring 207 releases elastic potential energy to drive the pumping plunger 203 to slide outwards of the pumping hole 208, and at the same time, the second return spring 1205 pushes the lower end of the second steel column sealing communication hole 1202, at the moment, the pressure in the pumping hole 208 is smaller than the pressure of oil in the pumping cavity 101, the first steel ball 506 is separated from contact with the transverse hole 502, so that the transverse hole 502 is communicated with the housing 503, and the oil in the pumping cavity 101 enters the pumping hole 208 after passing through the vertical hole 501, the transverse hole 502, the housing 503 and the drain hole 504, so that the action of pumping the oil for one time is completed;

it should be noted in detail that, by the arrangement of each non-return unit 12, the oil in the oil outlet pipeline 102 cannot flow back to each oil pumping hole, that is, even if the tightness between one oil pumping hole and the pumping plunger 203 is reduced, the high-pressure oil in the oil outlet pipeline 102 cannot leak from the oil pumping hole to return to the pumping cavity 101, and each oil pumping hole and the pumping plunger 203 are independently operated, so long as at least one group of oil pumping holes and pumping plungers 203 are effective, a braking action can be executed, and enough design redundancy is provided;

and each pumping unit 2 is radially distributed around the pump body 107, and when the power unit 3 operates, power is sequentially provided for each pumping unit 2, so that the oil in the pumping cavity 101 is ensured to continuously enter the oil outlet pipeline 103, and the brake linearity is ensured.

Example 3:

as shown in fig. 3, in this embodiment, in addition to including the structural features of the previous embodiments, the power unit 3 includes a pump shaft 301 rotatably mounted in the pumping chamber 101 by a ball bearing 302, driven by a motor; a sealing unit 6 disposed between the outer end of the pumping chamber 101 and the pump shaft 301; a boss 305 is provided in the middle of the pump shaft 301, pushing the pump plunger 203 when the pump shaft 301 rotates.

Further, the power unit 3 further comprises a wave spring washer 303, which is arranged between the bottom end of the pumping chamber 101 and the ball bearing 302.

Further, the power unit 3 further includes a pair of weights 304 mounted on the pump shaft 301, the pair of weights 304 are cams, and the convex sides and the convex portion 305 are symmetrical with respect to the axis of the pump shaft 301.

Further, the power unit 3 further includes a needle bearing 306, which is sleeved on the boss 305 and the outer side of the middle of the pump shaft 301.

Further, the sealing unit 6 includes an inner frame oil seal 601 installed between the outer end of the pump shaft 301 and the outer end of the pumping chamber 101; an oil seal gasket 602 disposed between the ball bearings 302 at the inner and outer ends of the inner frame oil seal 601.

Further, the device also comprises a pressure stabilizing tube 104 which is arranged at the outlet end of the oil outlet pipeline 103; an oil outlet 105 which communicates with the pressure-stabilizing tube 104; and a pressure stabilizer 7 installed at the outer end of the pressure stabilizing tube 104 for maintaining the pressure of the oil in the pressure stabilizing tube 104.

In this embodiment of the present application, due to the above-mentioned structure, when the braking action is performed, the motor is operated, the pump shaft 301 continuously rotates in the counterclockwise or clockwise direction, the protruding portion 305 sequentially contacts the outer ends of the pumping plungers 203 along with the rotation of the pump shaft 301, and pushes the protruding portion 305 into the pumping holes 208, so that the oil in the corresponding pumping holes 208 is pumped into the non-return cavity, the pumping plungers 203 which are out of contact with the protruding portion 305 extend out of the pumping holes 208 under the action of the fixing ring 204, the snap ring 205 and the first return spring 207, and meanwhile, the inner ends of the corresponding pumping holes 208 are filled with the oil again, and wait for the next pumping;

through the arrangement of the wave spring gaskets 303, the pump shaft 301 is prevented from loosening up and down;

through the arrangement of the inner framework oil seal 601 and the oil seal gasket 602, a plurality of seals are formed between the pump shaft 301 and the outer end of the pumping cavity 101, so that oil in the pumping cavity 101 is prevented from leaking from the positions;

the cam serving as the balance block 304 is symmetrical with the bulge side and the bulge part 305 by taking the axis of the pump shaft 301 as a central line, so that the difference of the mass of two sides of the axis of the pump shaft 301 is reduced, the stability during rotation is improved, and the generation of vibration is reduced;

when the protruding portion 305 is in transmission fit with the outer end of the pumping plunger 203, the outer end of the pumping plunger 203 is in contact with the needle bearing 306, so that loss generated by friction between the outer end of the pumping plunger 203 and the outer wall of the protruding portion 305 is reduced, friction force is reduced, and service life is prolonged.

Example 4:

as shown in fig. 5 to 10, in this embodiment, in addition to including the structural features of the foregoing embodiments, the voltage regulator 7 includes a voltage-stabilizing case 701 having an inflation valve 704 at its top end and a voltage-stabilizing tube 104 connected at its bottom end; a pressure stabilizing piston 702 movably installed in the pressure stabilizing case 701; the sealing rings 703 are provided with a plurality of sealing rings which are respectively embedded on the peripheral wall of the pressure stabilizing piston 702; and the quick-dismantling mechanism 8 is used for detachably connecting the bottom end of the voltage stabilizing shell 701 with the voltage stabilizing tube 104.

Further, the device also comprises a second non-return groove 1301 which is arranged at the outlet end of the oil outlet pipeline 103; the second mounting frame 1302 is arranged in the second non-return groove 1301, is opened towards the inner cavity end of the voltage stabilizing tube 104, and is hollow at the other end; the non-return sleeve is arranged on the second mounting frame 1302, and one end of the non-return sleeve is communicated with the hollowed-out part of the second mounting frame 1302; a drain hole II 1304 provided on the circumferential side of the check sleeve 1303; the second liquid inlet 1305 is arranged at the end part of the non-return pipe sleeve 1303, which is far away from the hollow part of the second mounting frame 1302; and a third steel ball 1306 which is movably arranged in the inner cavity of the non-return pipe sleeve 1303.

In this embodiment of the present application, due to the above structure, the external air charging device (not shown in the figure), such as an air pump, is previously used to communicate with the air charging valve 704, to fill nitrogen into the cavity of the pressure stabilizing shell 701, then the air charging valve 704 is closed, high-pressure nitrogen is filled between the movable piston and the air charging valve 704, and because of the compressibility of the air, when the braking action is performed, oil enters the pressure stabilizing tube 104 from the oil outlet pipeline 103, passes through the pressure stabilizing tube 104 and is discharged from the oil outlet 105, when the braking action is completed, the oil subsequently enters the cavity of the pressure stabilizing tube 104, so that the movable piston slides in the cavity of the pressure stabilizing shell 701 to the air charging valve 704, the nitrogen is compressed, the movable piston is continuously pressurized, and when the pressure in the pressure stabilizing tube 104 and the oil outlet 105 is reduced due to the non-released braking state, the oil in the pressure stabilizing shell 701 is pressed out into the pressure stabilizing tube 104 by the movable piston, so that the pressure in the pressure stabilizing tube 104 and the oil outlet 105 is kept, and the stability of the braking state is ensured;

oil enters the non-return groove two 1301 when being discharged from the oil outlet pipeline 102, then sequentially passes through the hollowed-out part of the mounting frame two 1302, enters the pressure stabilizing tube 104 after passing through the non-return pipeline inner cavity and the liquid discharge hole two 1304, and enters the pressure stabilizing tube 104 from the liquid inlet hole two 1305 when the oil pressure in the pressure stabilizing tube 104 is greater than the oil pressure in the oil outlet pipeline 102, so that the oil in the oil outlet pipeline 102 is pushed to the oil outlet pipeline 102 by the steel ball three 1306, the oil outlet end of the oil outlet pipeline 102 is blocked by the steel ball three 1306, and the reverse flow of the oil is prevented.

Example 5:

as shown in fig. 9, in this embodiment, in addition to including the structural features of the foregoing embodiment, the quick release mechanism 8 includes a housing 801 that is sleeved at the bottom end of the pressure stabilizing housing 701; the driving unit 9 comprises a double-sided gear ring 901 and a plurality of lifting pieces 10 which are lifted along with the rotation of the double-sided gear ring 901; a plurality of clamping grooves 802 which are arranged on the outer peripheral wall of the outer end of the voltage stabilizing tube 104 at intervals; the engaging units 11 are connected to the lifters 10 in a driving manner, and engage with the engaging grooves 802 or disengage from the engaging grooves 802 as the lifters 10 are lifted.

Further, the quick release mechanism 8 further comprises a sealing ring groove 803, which is arranged on the peripheral wall of the pressure stabilizing tube 104 and connected with the outer end surface; the sealing sleeve 804 is sleeved on the sealing ring groove 803 and the voltage stabilizing tube 104; a plurality of through grooves 805 which are arranged at intervals at the bottom of the peripheral wall of the pressure stabilizing shell 701 and correspond to the seal ring grooves 803; and a plurality of telescopic members 12 are slidably arranged in the through grooves 805, and each telescopic member 12 is in transmission connection with each lifting member 10 and slides in the through grooves 805 along with the lifting of the lifting member 10.

Further, the drive unit 9 includes a double-sided ring gear 901 rotatably mounted on top of the inner cavity of the housing 801; a rotating shaft 902 rotatably installed at the top of the housing 801, one end of which is provided with an inner hexagonal groove 903 and extends out of the housing 801; the worm 904 is arranged in the middle of the rotating shaft 902 and is in transmission connection with the double-sided gear ring 901; a gear shaft 905 rotatably mounted in the inner cavity of the housing 801 by the ball bearing 302; a gear 906 mounted on the gear shaft 905 to be engaged with the inside of the double-sided ring gear 901; a lifting hole 907 penetrating the gear shaft 905 up and down is provided for mounting the lifting member 10.

Further, the lifter 10 includes a lifter 1001 vertically liftably installed in the lifter hole 907; a chute one 1002 provided on a side wall of the gear shaft 905; and a first transmission column 1003 fixedly arranged on the outer wall of the lifting rod 1001 and in transmission fit with the first chute 1002.

Further, the lifter 10 further includes a restricting groove 1004 penetrating the lifter 1001 up and down, and having a polygonal cross section; an opening (not shown) provided at the bottom end of the elevating rod 1001 in communication with the bottom end of the restricting groove 1004; the limiting rod 1005 is L-shaped, the cross section of which is matched with the limiting groove 1004, the top end of the limiting rod is fixedly connected with the top end of the housing 801, most of the limiting rod is inserted into the limiting groove 1004, and the bottom end of the limiting rod is bent to pass through the opening and is abutted against the inner wall of the housing 801.

In this embodiment of the present application, because the above-mentioned structure is adopted, when the pressure stabilizing housing 701 is mounted, the bottom end of the pressure stabilizing housing 701 is aligned with and sleeved on the outer end of the pressure stabilizing tube 104, at this time, the first transmission column 1003 is located at the top end of the first chute 1002, the first transmission column 1003 is pushed by the lower end of the first chute 1002, at the same time, the lifting rod 1001 descends along with the first transmission column 1003, so that each expansion piece 12 slides in each through groove 805 to 804, and the sealing sleeve 802 is driven to move synchronously when the worm 904 rotates, each gear shaft 905 rotates synchronously, the first chute 1002 moves along with the lifting rod 1001, the limiting groove 1004 and the limiting rod 1005 cooperate, therefore, the first transmission column 1003 cannot rotate along with the rotation of the first chute 1002, the first transmission column 1003 is pushed by the lower end of the first chute 1002, at the same time, the lifting rod 1001 descends along with the first transmission column 1003, so that each expansion piece 12 slides in each through groove 805, and simultaneously, each clamping unit 11 is driven to move towards each clamping groove 802 until each clamping groove 802 completely stops rotating along with each clamping groove 11;

when the pressure stabilizing shell 701 is disassembled, the first transmission column 1003 is positioned at the bottom end of the first chute 1002, an inner hexagonal tool is matched with a hexagonal groove to drive the rotating shaft 902 and the worm 904 to rotate, transmission teeth are arranged on the inner side and the outer side of the double-sided gear ring 901, the gears 906 and the gear shafts 905 synchronously act when the worm 904 rotates, the gear shafts 905 synchronously rotate, the first chute 1002 moves along with the rotation of the first gear shafts, the first transmission column 1003 contacts with the bottom surface of the first chute 1002, the first transmission column 1003 is pushed towards the upper end of the first chute 1002 along with the rotation of the first chute 1002, meanwhile, the lifting rod 1001 moves upwards along with the first transmission column 1003, so that each telescopic piece 12 slides in each through groove 805 in a direction away from the sealing sleeve 804, and meanwhile, each clamping unit 11 is driven to move in a direction away from each clamping groove 802 until each clamping unit 11 is completely separated from each clamping groove 802, and the rotating shaft 902 is stopped at the moment;

it should be noted in detail that, the gear shaft 905 can only rotate around the shaft, the position of the limiting rod 1005 is fixed, and due to the arrangement of the limiting groove 1004 and the limiting rod 1005, the lifting rod 1001 sleeved outside the limiting rod 1005 can only lift along the non-bending portion of the lifting rod 1001, and when the gear shaft 905 rotates, the interaction of the first chute 1002 and the first transmission column 1003 provides lifting driving force for the lifting rod 1001.

Example 6:

as shown in fig. 9, in this embodiment, in addition to including the structural features of the foregoing embodiments, the engagement unit 11 includes a communication groove 1101 provided at the bottom of the pressure stabilizing case 701 in correspondence with the engagement groove 802; the top end of the swing engagement plate 1102 is movably connected to the top of the communication groove 1101 by a pin 1103, one side of the swing engagement plate 1102 abuts against the side wall of the lifting rod 1001, and the other end thereof is engageable with the engagement groove 802.

Further, the engaging unit 11 further includes a reset arc groove 1104, which is disposed on the swing engaging plate 1102 and concentric with the pin 1103; a reset block 1105 mounted on the inner wall of the communication groove 1101 and extending into the reset arc groove 1104; and a return spring III 1106, which is arranged between the outer end of the return arc groove 1104 and the return block 1105.

Further, the telescopic piece 14 comprises a telescopic sliding block 1401, one end of which is slidably inserted in the through groove 805 and is abutted against the outer wall of the sealing sleeve 804; a transmission groove 1402 penetrating the middle of the telescopic slider 1401 up and down; a pair of second chute 1403 disposed on opposite inner walls of the drive slot 1402; and a pair of second transmission columns 1404 are fixedly arranged on the outer wall of the lifting rod 1001 and are in transmission connection with the second chute 1403.

In this embodiment of the present application, because the above-mentioned structure is adopted, when the lifting rod 1001 descends, the bottom end is in contact with the outer side wall of the swing engagement plate 1102, along with the descending of the lifting rod 1001, the swing engagement plate 1102 is pushed to swing towards the engagement groove 802 around the pin shaft 1103 until one end of the swing engagement plate 1102, which is far away from the lifting rod 1001, is inserted into the engagement groove 802, meanwhile, the reset arc groove 1104 swings around the pin shaft 1103 along with the swing engagement plate 1102, the reset spring three 1106 is pressed to shorten the storage elastic potential energy, the lifting rod 1001 continues to descend until the side wall of the swing engagement plate 1102, which is far away from the lifting groove, is in contact with the side wall of the lifting rod 1001, and the bottom end of the lifting rod 1001 is also supported by the bending end of the limiting rod 1005, so that the connection and fixation between the pressure stabilizing shell 701 and the pressure stabilizing tube 104 are completed;

when the lifting rod 1001 ascends, the bottom end of the swinging clamping plate 1102 is lifted, the side wall of the swinging clamping plate 1102 away from the clamping groove 802 is transferred from abutting with the side wall of the lifting rod 1001 to abutting with the bottom end of the lifting rod 1001, as the lifting rod 1001 continues to ascend, the reset spring III 1106 releases elastic potential energy to push the swinging clamping plate 1102 to swing around the pin shaft 1103 in the direction away from the clamping groove 802, so that the side wall of the swinging clamping plate 1102 away from the clamping groove 802 is always attached to the bottom end surface of the lifting rod 1001, and as the lifting rod 1001 ascends, the swinging clamping plate 1102 is gradually separated from the clamping groove 802 until the swinging clamping plate 1102 is completely separated from the clamping groove 802, and at the moment, the connection fixation between the voltage stabilizing shell 701 and the voltage stabilizing tube 104 is released;

when the lifting rod 1001 lifts, it lifts and slides in the driving groove 1402, and at the same time, the driving columns two 1404 lift in the chute two 1403 respectively, when the lifting rod 1001 lifts, the peripheral wall of the driving columns two 1404 slide against the upper side of the chute two 1403, and as the lifting rod 1001 lifts, the telescopic sliding block 1401 moves away from the sealing sleeve 804, when or before the swinging clamping plates 1102 separate from the corresponding clamping grooves 802, the telescopic sliding block 1401 separates from the sealing sleeve 804, when the lifting rod 1001 lifts, the peripheral wall of the driving columns two 1404 slide against the lower side of the chute two 1403, and as the lifting rod 1001 lifts, the telescopic sliding block 1401 moves towards the sealing sleeve 804, and when the swinging clamping plates 1102 finish clamping the corresponding clamping grooves 802, the telescopic sliding blocks 1401 extend into the ends of the through grooves 805 and also press the sealing sleeve 804;

preferably, the outer wall of the voltage stabilizing tube 104 is provided with a concave part 106 at a position corresponding to each telescopic sliding block 1401, and when each clamping groove 802 is mutually clamped with each swinging clamping plate 1102, the inner end of each telescopic sliding block 1401 pushes the side wall of the sealing sleeve 804 into the concave part 106 to limit.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element. Furthermore, it should be noted that the scope of the methods and apparatus in the embodiments of the present application is not limited to performing the functions in the order shown or discussed, but may also include performing the functions in a substantially simultaneous manner or in an opposite order depending on the functions involved, e.g., the described methods may be performed in an order different from that described, and various steps may also be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

The embodiments of the present application have been described above with reference to the accompanying drawings, but the present application is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many forms may be made by those of ordinary skill in the art without departing from the spirit of the present application and the scope of the claims, which are also within the protection of the present application.

Claims (1)

1. The utility model provides a brake master cylinder, includes pump body (107) that are equipped with pumping chamber (101), oil feed pipeline (102) and play oil pipeline (103), its characterized in that still includes:

the pumping device comprises a plurality of pumping units (2) and a power unit (3) and is used for pumping oil in the pumping cavity (101) to the oil outlet pipeline (103);

wherein each pumping unit (2) is radially spaced around the pump body (107);

the pumping unit (2) comprises:

a mounting hole (201) which communicates with the pumping chamber (101) through a connection passage;

a fixed piston (202) detachably mounted in the mounting hole (201);

a pumping member movably mounted in the fixed piston (202) for pumping oil to the oil outlet line (103) under the drive of the power unit (3);

the pumping member includes:

a pumping plunger (203) movably mounted at an inner end of the stationary piston (202) through a pumping hole (208);

a drainage unit which communicates the inner end of the pumping hole (208) with the oil outlet pipeline (103);

a unidirectional transfusion unit (5) for pumping oil into the pumping hole (208) when the pumping plunger (203) moves;

the pumping member further comprises:

a fixed ring (204) which is arranged at the inner end of the pumping plunger (203) through the arrangement of a clamping ring (205) and an anti-drop ring groove (206);

a first return spring (207) sleeved on the outer side of the pumping plunger (203), and two ends of the first return spring are respectively abutted with the outer end of the fixed ring (204) and the inner end of the fixed piston (202);

the drainage unit includes:

a drainage ring groove (4) which is arranged around the mounting hole (201) and is communicated with the oil outlet pipeline (103);

a non-return unit (12) for connecting the drainage ring groove (4) with the pumping hole (208) and preventing the oil from flowing back into the pumping hole (208);

the power unit (3) comprises:

a pump shaft (301) rotatably mounted in the pumping chamber (101) by means of a bearing (302), driven by an electric motor;

the sealing unit (6) is arranged between the outer end of the pumping cavity (101) and the pump shaft (301);

a boss (305) provided in the middle of the pump shaft (301) for pushing the pump plunger (203) when the pump shaft (301) rotates;

a pressure stabilizing pipe (104) arranged at the outlet end of the oil outlet pipeline (103);

an oil outlet (105) which communicates with the pressure stabilizing tube (104);

the pressure stabilizer (7) is arranged at the outer end of the pressure stabilizing tube (104) and used for maintaining the pressure of oil in the pressure stabilizing tube (104);

the voltage stabilizer (7) includes:

the top end of the pressure stabilizing shell (701) is provided with an inflation valve (704), and the bottom end of the pressure stabilizing shell is communicated with the pressure stabilizing tube (104);

a pressure-stabilizing piston (702) movably mounted in the pressure-stabilizing housing (701);

the sealing rings (703) are provided with a plurality of sealing rings which are respectively embedded on the peripheral wall of the pressure stabilizing piston (702);

the quick-dismantling mechanism (8) is used for enabling the bottom end of the voltage stabilizing shell (701) to be detachably connected with the voltage stabilizing tube (104);

the quick release mechanism (8) comprises:

the shell (801) is sleeved at the bottom end of the voltage stabilizing shell (701);

the driving unit (9) comprises a double-sided gear ring (901) and a plurality of lifting pieces (10) which are lifted along with the rotation of the double-sided gear ring (901);

a plurality of clamping grooves (802) which are arranged on the peripheral wall of the outer end of the voltage stabilizing tube (104) at intervals;

a plurality of clamping units (11) which are in transmission connection with the lifting pieces (10) and are clamped with the clamping grooves (802) or separated from the clamping grooves (802) along with the lifting of the lifting pieces (10);

the quick release mechanism (8) further comprises:

a seal ring groove (803) provided on the peripheral wall of the surge tube (104) and connected to the outer end surface;

the sealing sleeve (804) is sleeved on the sealing ring groove (803) and the pressure stabilizing tube (104);

the through grooves (805) are arranged at intervals at the bottom of the peripheral wall of the pressure stabilizing shell (701) and correspond to the sealing ring grooves (803);

a plurality of telescopic members (14) slidably mounted in the respective through slots (805);

wherein, each telescopic piece (14) is connected with each lifting piece (10) in a transmission way, and slides in the through groove (805) along with the lifting of the lifting piece (10);

the clamping unit (11) comprises a communication groove (1101), and the communication groove is arranged at the bottom of the pressure stabilizing shell (701) and corresponds to the clamping groove (802); the top end of the swing clamping plate (1102) is movably connected with the top of the communication groove (1101) through a pin shaft (1103), one side of the swing clamping plate (1102) is abutted against the side wall of the lifting rod (1001), and the other end of the swing clamping plate can be clamped with the clamping groove (802);

further, the clamping unit (11) further comprises a reset arc groove (1104) which is arranged on the swing clamping plate (1102) and is concentric with the pin shaft (1103); a reset block (1105) which is installed on the inner wall of the communication groove (1101) and extends into the reset arc groove (1104); a return spring III (1106) which is arranged between the outer end of the return arc groove (1104) and the reset block (1105);

further, the telescopic piece (14) comprises a telescopic sliding block (1401), and one end of the telescopic sliding block is inserted into the through groove (805) in a sliding manner and is abutted with the outer wall of the sealing sleeve (804); a transmission groove (1402) which vertically penetrates through the middle part of the telescopic sliding block (1401); a pair of second chute (1403) arranged on the inner wall of the opposite side of the transmission groove (1402); and the second transmission column (1404) is fixedly arranged on the outer wall of the lifting rod (1001) and is in transmission connection with each second chute (1403).

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