CN115805925A - Brake master cylinder - Google Patents

Abstract

The application discloses master cylinder of brake, including the pump body that is equipped with pumping chamber, advances oil pipe way and goes out oil pipe way, still include pumping installations, it includes a plurality of pumping units and a power pack for with pumping intracavity fluid to going out oil pipe way pumping, each pumping unit is around the radial interval distribution of the pump body, and pumping units includes: the mounting hole is communicated with the pumping cavity through a connecting channel; a fixed piston detachably mounted in the mounting hole; the pumping piece is movably arranged on the fixed piston and used for pumping oil to the oil outlet pipeline under the driving of the power unit, the oil enters the pumping cavity and the connecting channel from the oil inlet pipeline through the technical scheme in daily use, the power unit operates to drive the pumping piece to reciprocate in the mounting hole and pump the oil into the oil outlet pipeline, and the pumping units are radially arranged around the pump body, so that the length of the brake master pump is reduced, the arrangement is convenient, and the oil output is more linear.

Description

Brake master cylinder

Technical Field

The invention relates to a master cylinder of a brake.

Background

The mechanical bicycle and electric motorcycle are configured in the brake system, which mainly comprises a brake master cylinder, a brake oil pipe and brake calipers, the brake mode is divided into drum brake and disc brake, except for the slight difference between the parts of the calipers and the brake mode, the brake modes mainly utilize friction force to convert kinetic energy into heat energy and disperse the heat energy into air, so that the vehicle can achieve the function of decelerating or stopping. The master cylinder of the brake and the master cylinder of the clutch are main accessories of the automobile brake system, such as:

the technical scheme recorded in a dustproof brake master cylinder (patent number CN 06797363U) in the Chinese invention patent is as follows: through the length of adjusting first piston rod, and then adjust the empty stroke length of first piston in the position of cylinder body and cylinder body in the cylinder body to the sensitivity of adjustment brake master cylinder, when first piston rod is longer, the empty stroke of first piston rod is short, and brake sensitivity is high, when first piston rod is shorter, the empty stroke of first piston rod is long, and brake sensitivity is low, through the length of adjusting 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 a cylinder body is large, and the arrangement of a master brake pump is inconvenient;

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

3. a plurality of piston assemblies work in same cylinder body, under long-time work, when one of them piston assembly produced the piece with cylinder body inner wall friction, just can influence the leakproofness between each piston assembly and the cylinder body, will lead to brake sensitivity to descend or even inefficacy.

Disclosure of Invention

The present invention is directed to solving one of the technical problems of the prior art.

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

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

wherein the pumping units are radially spaced around the pump body.

The pumping unit includes:

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

a fixed piston detachably mounted in the mounting 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 driving of the power unit.

The pumping member includes:

the pumping plunger is movably arranged at the 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 one-way infusion unit is used for pumping oil into the pumping hole when the pumping plunger moves.

The pumping piece still includes:

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

and the first reset spring is sleeved outside the pumping plunger, and two ends of the first reset spring are respectively abutted against the outer end of the fixing ring and the inner end of the fixing 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 to prevent the 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 is arranged in the middle of the pump shaft and pushes the pumping plunger when the pump shaft rotates.

Further comprising:

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

an oil outlet which is communicated with the pressure stabilizing pipe;

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 regulator 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 a pressure stabilizing tube;

the pressure stabilizing piston is movably arranged in the pressure stabilizing shell;

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

the quick-release mechanism is used for detachably connecting the bottom end of the pressure stabilizing shell and the pressure stabilizing pipeline.

Quick detach mechanism includes:

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

the driving unit comprises bilateral gear rings and a plurality of lifting pieces which lift along with the rotation of the bilateral gear rings;

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

the clamping units are in transmission connection with the lifting pieces and are clamped with or separated from the clamping grooves along with the lifting of the lifting pieces.

The quick release mechanism further comprises:

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

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

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

the plurality of telescopic pieces can be slidably arranged in the through grooves;

wherein, each extensible member is connected with each lifting member transmission, and the through groove slides along with the lifting of lifting member.

The invention has the following beneficial effects:

1. through the arrangement of the pumping cavity, the power unit and the plurality of pumping units which are distributed around the pump body at intervals in the radial direction, the overall length of the master brake pump is reduced, the mass and the gravity center are concentrated, and the arrangement is convenient;

2. through the arrangement of 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 one-way infusion unit, when the power unit operates, the pumping plungers radially distributed around the pump body have different motion directions, and the vibration generated during operation is dispersed;

3. each pumping unit is connected with one power unit in parallel, and each pumping plunger piston runs in a corresponding pumping hole, so that the pumping plunger pistons are prevented from being failed at the same time, sufficient redundancy is realized, and the running stability of the master brake pump is ensured;

4. through the arrangement of the pressure stabilizer, redundant high-pressure oil is stored, and the high-pressure oil can be discharged when the oil pressure in the oil outlet pipeline, the pressure stabilizer and the oil outlet is reduced, so that compensation is performed, the oil pressure is kept, and the braking effect is ensured.

Drawings

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

FIG. 2 is a bottom view of the master cylinder of the present application in an embodiment;

FIG. 3 isbase:Sub>A schematic cross-sectional view taken along the line A-A in FIG. 2;

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

FIG. 5 is a schematic cross-sectional view taken along line B-B of FIG. 4;

FIG. 6 is a schematic cross-sectional view taken along line C-C of FIG. 4;

FIG. 7 is an enlarged view of a portion of the structure of FIG. 6 at D;

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

FIG. 9 is an enlarged view of a portion E of FIG. 8;

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

Reference numerals

101-pumping cavity, 102-oil inlet pipeline, 103-oil outlet pipeline, 104-pressure maintaining tube, 105-oil outlet, 106-recess, 107-pump body, 2-pumping unit, 201-mounting hole, 202-fixed piston, 203-pumping plunger, 204-fixed ring, 205-snap ring, 206-anti-drop ring groove, 207-reset spring I, 208-pumping hole, 3-power unit, 301-pump shaft, 302-ball bearing, 303-wave spring gasket, 304-balance block, 305-bulge, 306-needle bearing, 4-drainage ring groove, 5-one-way infusion unit, 501-vertical hole, 502-horizontal hole, 503-cover, 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-voltage stabilizer, 701-voltage stabilization shell, 702-voltage stabilization piston, 703-sealing ring, 704-inflation valve, quick release mechanism, 801-shell, 802-clamping groove, 803-sealing ring groove, 804-sealing sleeve, 805-through groove, 9-driving unit, 901-bilateral gear ring, 902-rotating shaft, 903-inner hexagonal groove, 904-worm, 905-gear shaft, 906-gear, 907-lifting hole, 10-lifting piece, 1001-lifting rod, 1002-chute I, 1003-transmission column I, 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 III, 12-non-return unit, 1201-non-return groove I, 1202-communicating hole, 1203-mounting frame I, 1204-steel ball II, 1205-reset spring II, 1301-non-return groove II, 1302-mounting frame II, 1303-non-return pipe sleeve, 1304-liquid discharge hole II, 1305-liquid inlet hole II, 1306-steel ball III, 14-telescopic piece, 1401-telescopic slide block, 1402-transmission groove, 1403-chute II and 1404-transmission column II.

Detailed Description

The technical solutions in the embodiments of the present application will be described clearly below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some, but not all, embodiments of the present application. All other embodiments that can be derived by one of ordinary skill in the art from the embodiments given herein are intended to be within the scope of the present disclosure.

The terms first, second and the like in the description and in the claims of the present application are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It will be appreciated that the data so used may be interchanged under appropriate circumstances such that embodiments of the application may be practiced in sequences other than those illustrated or described herein, and that the terms "first," "second," and the like are generally used herein in a generic sense and do not limit the number of terms, e.g., the first term can be one or more than one. In addition, "and/or" in the specification and claims means at least one of connected objects, a character "/" generally means that a preceding and succeeding related objects are in an "or" relationship.

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

Example 1:

as shown in fig. 1 to 5, the present application provides a master cylinder, which includes a pump body 107 having a pumping chamber 101, an oil inlet pipeline 102 and an oil outlet pipeline 103, and a pumping device including a plurality of pumping units 2 and a power unit 3 for pumping oil in the pumping chamber 101 to the oil outlet pipeline 103, wherein 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 stationary piston 202 detachably mounted in the mounting hole 201; and a pumping member movably installed in the stationary piston 202 for pumping the oil toward the oil line 103 by the power unit 3.

In this embodiment of the application, due to the adoption of the above structure, the oil inlet pipeline 102 is communicated with an external oil storage container (not shown in the figure), the horizontal height of the external oil storage container must be higher than the height of the pumping chamber 101, or external force is applied to pressurize oil in the external oil storage container, so that the oil in the external oil storage container can continuously enter the pumping chamber 101 through the oil inlet pipeline 102, the power unit 3 operates when receiving an external brake signal, and pushes each pumping member to operate, so as to pump the oil in the pumping chamber 101 to the oil outlet pipeline 103.

Example 2:

as shown in fig. 3, in this embodiment, in addition to the structural features of the previous embodiment, further, the pumping member includes a pumping plunger 203 movably mounted at the inner end of the fixed piston 202 through a pumping hole 208; the drainage unit 4 is communicated with the inner end of the pumping hole 208 and the oil outlet pipeline 103; and a one-way fluid feeding unit 5 for pumping oil into the pumping hole 208 when the pumping plunger 203 moves.

The one-way infusion unit 5 comprises a vertical hole 501 which vertically penetrates through the inner end of the pumping plunger 203; a transverse hole 502 which communicates the vertical hole 501 and the outer end face of the pumping plunger 203; a cover 503 which is arranged at the outer end of the pumping plunger 203, the periphery of which is provided with a first liquid outlet 504, and the end of which is provided with a first liquid inlet 505; and a first steel ball 506 arranged in the housing 503.

Further, the pumping piece also comprises a fixing ring 204 which is arranged at the inner end of the pumping plunger 203 through the arrangement of a snap ring 205 and a retaining ring groove 206; and a first return spring 207 which is sleeved outside 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.

Further, the drainage unit 4 includes a drainage ring groove 401, which is disposed around the mounting hole 201 and is communicated with the oil outlet pipeline 103; and the check unit 12 is connected with the drainage ring groove 401 and the pumping hole 208, and prevents the oil from flowing back to the pumping hole 208.

Further, the non-return unit 12 comprises a non-return groove I1201 which is arranged on the outer wall of the fixed piston 202, and the bottom end of the non-return groove I is communicated with the drainage ring groove 401; a communication hole 1202 for communicating the first check groove 1201 and the pumping hole 208; the top end of the first mounting frame 1203 is open, the bottom end of the first mounting frame 1203 is hollow, and the first mounting frame 1203 is installed in the first check groove 1201; and a second steel ball 1204 which is installed on the first mounting frame 1203 through a second return spring 1205 and used for plugging the communication hole 1202.

In this embodiment of the application, due to the adoption of the above structure, when the power unit 3 operates, the pumping plunger 203 is intermittently pushed, when the pumping plunger 203 is pushed, the pumping plunger 203 moves towards the inner end of the pumping hole 208, at this time, the first return spring 207 is compressed and shortened, elastic potential energy is stored, meanwhile, oil in the inner end of the pumping hole 208 enters the housing 503 from the first liquid inlet 505, the first steel ball 506 is pushed to move towards the end of the first cross hole 502, and meanwhile, the pumping plunger 203 approaches the first steel ball 506, the first steel ball 506 finally abuts against the inner end of the cross hole 502, the cross hole 502 is sealed, as the pumping plunger 203 continues to go deep into the pumping hole 208, the pressure of the oil in the pumping hole 208 rises until the second steel ball 1204 pushes open from the lower end of the communication hole 1202, the oil in the pumping hole 208 enters the first check groove 1201 through a gap between the communication hole 1202 and the second steel ball 1204, at this time, the second return spring 1205 is shortened, the elastic potential energy passes through a hollow position at the bottom of the mounting frame and the drainage ring groove 401 and then enters the oil outlet pipeline 103; then the power unit 3 is disconnected from the pumping plunger 203 for transmission, at the moment, the first return spring 207 releases elastic potential energy to drive the pumping plunger 203 to slide towards the outside of the pumping hole 208, meanwhile, the second return spring 1205 pushes the second steel column to seal the lower end of the communicating hole 1202, at the moment, the pressure in the pumping hole 208 is smaller than that of oil in the pumping cavity 101, the first steel ball 506 is separated from contact with the transverse hole 502, the transverse hole 502 is communicated with the housing 503, 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 first liquid discharge hole 504, and one-time oil pumping action is completed;

it should be noted in detail that, through the arrangement of each non-return unit 12, the oil in the oil outlet pipeline 102 cannot flow back to each pumping hole, that is, even if the sealing performance between one of the pumping holes and the pumping plunger 203 is reduced, the high-pressure oil in the oil outlet pipeline 102 cannot be leaked from the pumping hole and returned to the pumping chamber 101, each pumping hole and the pumping plunger 203 are operated independently, and as long as at least one set of pumping holes and pumping plungers 203 is effective, the braking action can be performed, and sufficient design redundancy is provided;

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

Example 3:

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

Further, the power unit 3 further includes a wave spring washer 303 disposed 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, each of the pair of weights 304 is a cam, and the convex side 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 disposed on the outer side of the middle portion between the boss 305 and the pump shaft 301.

Further, the sealing unit 6 comprises an inner frame oil seal 601 which is arranged between the outer end of the pump shaft 301 and the outer end of the pumping cavity 101; and an oil seal gasket 602 which is arranged between the ball bearings 302 at the inner end and the outer end of the inner framework 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 communicating with the surge tank 104; and the voltage stabilizer 7 is arranged at the outer end of the pressure stabilizing tube 104 and is used for maintaining the pressure of the oil liquid in the pressure stabilizing tube 104.

In this embodiment of the application, due to the adoption of the structure, when a braking action is performed, the motor operates, the pump shaft 301 continuously rotates counterclockwise or clockwise, the convex part 305 sequentially contacts the outer ends of the pumping plungers 203 along with the rotation of the pump shaft 301 and pushes the pumping plungers 203 into the pumping holes 208, so that 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 convex part 305 extend out of the pumping holes 208 under the action of the fixing ring 204, the snap ring 205 and the return spring one 207, and meanwhile, the inner ends of the corresponding pumping holes 208 are filled with oil again to wait for the next pumping;

the pump shaft 301 is prevented from loosening up and down by the arrangement of the wave-shaped spring gasket 303;

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 weight 304 has the convex side and the convex part 305 which are symmetrical by taking the axis of the pump shaft 301 as a central line, so that the difference of the mass of the two sides of the axis of the pump shaft 301 is reduced, the stability of the pump shaft in rotation is improved, and the generation of vibration is reduced;

when the convex part 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 the loss between the outer end of the pumping plunger 203 and the outer wall of the convex part 305 due to friction is reduced, the friction force is reduced, and the service life is prolonged.

Example 4:

as shown in fig. 5 to 10, in this embodiment, in addition to the structural features of the previous embodiment, the regulator 7 includes a regulator casing 701 having an inflation valve 704 at its top end and a connection to the surge tank 104 at its bottom end; a surge piston 702 movably installed in the surge case 701; a plurality of seal rings 703 which are respectively embedded in the outer peripheral wall of the pressure stabilizing piston 702; and the quick release mechanism 8 is used for detachably connecting the bottom end of the voltage stabilizing shell 701 with the voltage stabilizing tube 104.

Further, a second non-return groove 1301 is also included and is arranged at the outlet end of the oil outlet pipeline 103; a second mounting frame 1302 which is arranged in the second non-return groove 1301, is open towards the inner cavity end of the stabilivolt 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 hollow part of the second mounting frame 1302; a second drain hole 1304 provided on the periphery of the non-return pipe sleeve 1303; a second liquid inlet 1305 arranged at the end part of the non-return pipe sleeve 1303 far away from the hollow part of the second mounting frame 1302; and a steel ball three 1306 is movably arranged in the inner cavity of the non-return pipe sleeve 1303.

In this embodiment of the application, due to the above-mentioned structure, the above-mentioned structure is used, and the external inflation device (not shown in the figure), such as an air pump, is in communication with the inflation valve 704 in advance, so that nitrogen is filled into the inner cavity of the pressure stabilizing shell 701, then the inflation valve 704 is closed, at this time, high-pressure nitrogen is filled between the movable piston and the inflation valve 704, because of compressibility of the gas, 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, oil subsequently entering the pressure stabilizing tube 104 enters the inner cavity of the pressure stabilizing shell 701, so that the movable piston slides to the inflation valve 704 in the inner cavity of the pressure stabilizing shell 701, the nitrogen is compressed, the movable piston is continuously pressurized, when the pressure in the pressure stabilizing tube 104 and the oil outlet 105 drops due to non-brake-releasing 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 stabilizing tube 104 and the oil outlet 105 are kept under pressure, and the stability of the braking state is ensured;

when oil is discharged from the oil outlet pipeline 102, the oil enters the second check groove 1301, then sequentially passes through the hollow-out parts of the second mounting frame 1302, the inner cavity of the second check pipeline and the second liquid discharge hole 1304 and then enters the pressure stabilizing pipe 104, when the oil pressure in the pressure stabilizing pipe 104 is greater than that in the oil outlet pipeline 102, the oil in the oil outlet pipeline 102 enters the pressure stabilizing pipe 104 from the second liquid inlet hole 1305, the third steel ball 1306 is pushed towards the oil outlet pipeline 102, and the third steel ball 1306 blocks the oil outlet end of the oil outlet pipeline 102 to prevent the oil from flowing backwards.

Example 5:

as shown in fig. 9, in this embodiment, in addition to the structural features of the previous embodiment, the quick release mechanism 8 includes a housing 801, which is sleeved on the bottom end of the pressure stabilizing housing 701; a driving unit 9 including a double-sided ring gear 901 and a plurality of lifters 10 lifted as the double-sided ring gear 901 rotates; 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; and a plurality of engaging units 11, which are connected to the respective lifters 10 in a transmission manner, and engage with or disengage from the respective engaging grooves 802 as the lifters 10 move up and down.

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

Further, the driving unit 9 includes a double-sided ring gear 901 rotatably mounted on the top of the inner cavity of the housing 801; a rotating shaft 902, which is rotatably mounted on the top of the housing 801, and has a hexagon socket 903 at one end 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 bilateral gear ring 901; a gear shaft 905 rotatably mounted in the inner cavity of the housing 801 through 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; and the lifting hole 907 penetrates through the gear shaft 905 from top to bottom and is used for installing the lifting piece 10.

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

Further, the lifting member 10 further includes a limiting groove 1004 which penetrates the lifting rod 1001 vertically and has a polygonal cross section; an opening (not shown) provided at the bottom end of the lift rod 1001 to communicate with the bottom end of the restriction groove 1004; and a limiting rod 1005 which is L-shaped, has a cross section matched with the limiting groove 1004, has a top end fixedly connected with the top end of the shell 801, is mostly inserted into the limiting groove 1004, and has a bottom end bent to pass through the opening to be abutted against the inner wall of the shell 801.

In this embodiment of the application, due to the above structure, when the pressure stabilizing shell 701 is installed, the bottom end of the pressure stabilizing shell 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, an inner hexagonal tool is used to be matched with the hexagonal groove to drive the rotating shaft 902 and the worm 904 to rotate, the inner side and the outer side of the double-sided gear ring 901 are provided with transmission teeth, the double-sided gear ring 901, the gear 906 and the gear shaft 905 synchronously operate when the worm 904 rotates, each gear shaft 905 synchronously rotates, the first chute 1002 moves along with the gear shaft, the lifting rod 1001 cannot rotate along with the gear shaft 905 under the matching of the limiting groove 1004 and the limiting rod 1005, therefore, the first transmission column 1003 cannot rotate, along with the rotation of the first chute 1002, the first transmission column 1003 is in contact with the top surface of the first chute 1002, the first transmission column 1003 is pushed towards the lower end of the first chute 1002 along with the rotation of the first chute, and simultaneously, the lifting rod 1001 descends along with the first transmission column 1003, so that each telescopic piece 12 slides in each through groove 805, the sealing sleeve 804, and the clamping unit 804, the clamping unit 804 is driven to completely press each clamping unit 802 to stop the clamping unit 802 and each clamping unit 902 to completely clamp each straight rotating;

when the pressure stabilizing shell 701 is disassembled, the first transmission column 1003 is located at the bottom end of the first chute 1002, an inner hexagon tool is matched with the hexagon 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-side gear ring 901, the gear 906 and the gear shaft 905 synchronously act when the worm 904 rotates, the gear shafts 905 synchronously rotate, the first chute 1002 moves along with the synchronous rotation, the first transmission column 1003 is in contact 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 descends along with the first transmission column 1003, the telescopic pieces 12 slide in the through grooves 805 in the direction far away from the sealing sleeve 804, meanwhile, the clamping units 11 are driven to move in the direction far away from the clamping grooves 802 until the clamping units 11 are completely separated from the clamping grooves 802, and the rotating shaft 902 stops rotating at the moment;

it should be detailed that the gear shaft 905 can only rotate around its own axial direction, the position of the limiting rod 1005 is fixed, 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 part of the lifting rod 1001, and when the gear shaft 905 rotates, the inclined groove 1002 and the transmission column 1003 cooperate with each other to provide a lifting driving force for the lifting rod 1001.

Example 6:

as shown in fig. 9, in the present embodiment, in addition to including the structural features of the foregoing embodiment, the engaging unit 11 includes a communicating groove 1101 provided at the bottom of the surge tank 701 in correspondence with the engaging groove 802; the tip of the swing engaging plate 1102 is movably connected to the top of the communicating groove 1101 by a pin 1103, one side of the swing engaging plate 1102 abuts against the side wall of the lift rod 1001, and the other end thereof can engage with the engaging 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 which is installed on the inner wall of the communicating groove 1101 and extends into the reset arc groove 1104; a third return spring 1106 disposed between the outer end of the return arc slot 1104 and the return block 1105.

Further, the telescopic member 14 comprises a telescopic sliding block 1401, one end of which is slidably inserted into the through groove 805 to abut against the outer wall of the sealing sleeve 804; the transmission groove 1402 penetrates through the middle part of the telescopic sliding block 1401 from top to bottom; a pair of second inclined grooves 1403 provided on the opposite side inner walls of the driving groove 1402; and the pair of transmission columns II 1404 are fixedly arranged on the outer wall of the lifting rod 1001 and are in transmission connection with the two chutes 1403.

In this embodiment of the application, due to the above structure, when the lifting rod 1001 descends, the bottom end of the lifting rod 1001 abuts against the outer side wall of the swinging engaging plate 1102, and with the descending of the lifting rod 1001, the swinging engaging plate 1102 is pushed to swing around the pin 1103 toward the engaging groove 802 until the end of the swinging engaging plate 1102 away from the lifting rod 1001 is inserted into the engaging groove 802, meanwhile, the resetting arc groove 1104 swings around the pin 1103 along with the swinging engaging plate 1102, the resetting spring three 1106 is pressed to shorten the stored elastic potential energy, the lifting rod 1001 continues to descend until the side wall of the swinging engaging plate 1102 away from the lifting groove abuts against the side wall of the lifting rod 1001, the bottom end of the lifting rod 1001 is also supported by the bending end of the limiting rod, and at this time, the connection and fixation between the pressure stabilizing shell 701 and the pressure stabilizing tube 104 is completed;

when the lifting rod 1001 ascends, the bottom end ascends, the side wall of the swinging clamping plate 1102 far away from the clamping groove 802 is transferred from being abutted to the side wall of the lifting rod 1001 to be abutted to the bottom end of the lifting rod 1001, along with the continuous ascending of the lifting rod 1001, 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 far away from the clamping groove 802, so that the side wall of the swinging clamping plate 1102 far away from the clamping groove 802 is always attached to the bottom end surface of the lifting rod 1001, along with the ascending of the lifting rod 1001, the swinging clamping plate 1102 gradually disengages from the clamping groove 802 until the swinging clamping plate 1102 completely disengages from the clamping groove 802, and at the moment, the connection and fixation between the voltage stabilizing shell 701 and the voltage stabilizing tube 104 is released;

when the lifting rod 1001 is lifted, the lifting rod moves up and down in the transmission groove 1402, and simultaneously, the pair of transmission columns 1404 moves up and down in the two chutes 1403 respectively, when the lifting rod 1001 is lifted up, the peripheral walls of the pair of transmission columns 1404 slide and rub with the upper sides of the two chutes 1403, and along with the lifting rod 1001, the telescopic slider 1401 is pushed towards the direction away from the sealing sleeve 804, when or before each swinging clamping plate 1102 is separated from the corresponding clamping groove 802, the telescopic slider 1401 is separated from the sealing sleeve 804, when the lifting rod 1001 is lowered, the peripheral walls of the pair of transmission columns 1404 slide and the lower sides of the two chutes 1403 slide and rub with the descending of the lifting rod 1001, the telescopic slider 1401 is pushed towards the sealing sleeve 804, and when each swinging clamping plate 1102 is completely clamped with the corresponding clamping groove 802, the end of each telescopic slider 1401 extends into the through groove 805 to press the sealing sleeve 804;

preferably, a recessed portion 106 is provided on the outer wall of the stabilivolt 104 at a position corresponding to each telescopic slider 1401, and when each engaging groove 802 and each swing engaging plate 1102 are engaged with each other, the inner end of each telescopic slider 1401 pushes the side wall of the sealing sleeve 804 into the recessed portion 106 to restrict the movement.

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 a … …" does not exclude the presence of another identical element in a process, method, article, or apparatus that comprises the element. Further, it should be noted that the scope of the methods and apparatus of the embodiments of the present application is not limited to performing the functions in the order illustrated or discussed, but may include performing the functions in a substantially simultaneous manner or in a reverse order based on the functions involved, e.g., the methods described may be performed in an order different than that described, and various steps may be added, omitted, or combined. In addition, features described with reference to certain examples may be combined in other examples.

While the present embodiments have been described with reference to the accompanying drawings, it is to be understood that the invention is not limited to the precise embodiments described above, which are meant to be illustrative and not restrictive, and that various changes may be made therein by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.

Claims (10)

1. The utility model provides a master cylinder, is including being equipped with pump chamber (101), advancing oil pipe way (102) and pump body (107) of producing oil pipe way (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 a pumping cavity (101) to an oil outlet pipeline (103);

wherein each of said pumping units (2) is radially spaced around the pump body (107).

2. A master cylinder according to claim 1, characterized in that said pumping unit (2) comprises:

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

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

and the pumping piece is movably arranged in the fixed piston (202) and is used for pumping oil to the oil outlet pipeline (103) under the driving of the power unit (3).

3. A master cylinder according to claim 2, wherein the pumping member comprises:

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

the drainage unit is communicated with the inner end of the pumping hole (208) and the oil outlet pipeline (103);

a one-way liquid feeding unit (5) for pumping oil into the pumping hole (208) when the pumping plunger (203) moves.

4. The master cylinder of claim 3, wherein the pumping member further comprises:

a fixing 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 the first reset spring (207) is sleeved on the outer side of the pumping plunger (203), and two ends of the first reset spring are respectively abutted against the outer end of the fixing ring (204) and the inner end of the fixing piston (202).

5. The master cylinder of claim 2, wherein the drain unit comprises:

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

and the check unit (12) is connected with the drainage ring groove (4) and the pumping hole (208) and prevents the oil from flowing back to the pumping hole (208).

6. A master cylinder according to claim 3, characterized in that said power unit (3) comprises:

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

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

and a boss (305) provided in the middle of the pump shaft (301) and pushing the pumping plunger (203) when the pump shaft (301) rotates.

7. The master cylinder of claim 6, further comprising:

a surge tank (104) provided at an outlet end of the oil outlet line (103);

an oil outlet (105) in communication with the surge tank (104);

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

8. A master cylinder according to claim 7, characterized in that said stabilizer (7) comprises:

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 surge piston (702) movably mounted in the surge case (701);

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

and the quick release mechanism (8) is used for detachably connecting the bottom end of the voltage stabilizing shell (701) with the voltage stabilizing tube (104).

9. A master cylinder according to claim 8, characterized in that the quick release mechanism (8) comprises:

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

a driving unit (9) which comprises a bilateral gear ring (901) and a plurality of lifting pieces (10) which lift along with the rotation of the bilateral gear ring (901);

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

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

10. A master cylinder according to claim 9, characterized in that the quick release mechanism (8) further comprises:

a sealing ring groove (803) which is arranged on the peripheral wall of the voltage-stabilizing tube (104) and is connected with the outer end surface;

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

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

a plurality of telescoping members (12) slidably mounted in each of the through slots (805);

the telescopic pieces (12) are in transmission connection with the lifting pieces (10) and slide in the through grooves (805) along with the lifting pieces (10).

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