Foot brake master cylinder

Abstract

The foot brake master pump comprises an upper pump, a foot brake assembly, a brake caliper, an upper pump pipeline and a foot brake master pump body provided with an upper pump connector, a piston cavity and an oil outlet end. A pushing and sealing assembly is arranged in the piston cavity, and when the pushing and sealing assembly slides towards the oil outlet end, the communicating position of the upper pump connector and the piston cavity is blocked; due to the arrangement of the push sealing assembly, the piston blocks the communication position of the upper pump connector and the piston cavity in the sliding process, and then brake oil is prevented from flowing back to the upper pump; and through the arrangement of a limiting ring sleeve, a locking groove, a connecting groove, a locking piece and a pop-up piece, the connector and the upper pump connector can be conveniently connected.

Description

Technical Field

[0001] This utility model relates to the field of foot brake master cylinder technology, and in particular to a foot brake master cylinder. Background Technology

[0002] The foot brake master cylinder is used in high-speed vehicles such as motorcycles and cars. It mainly brakes the wheels through the foot brake master cylinder. Generally, a hydraulic brake master cylinder is used, and the foot brake master cylinder is a part of the hydraulic brake master cylinder.

[0003] However, existing foot brake master cylinders are prone to problems such as pressure loss and braking performance failure due to brake fluid backflow. In addition, the hose connector is usually connected to the foot brake master cylinder connector by rotating a bolt, which is time-consuming and inconvenient. Summary of the Invention

[0004] This utility model aims to solve one of the technical problems existing in the prior art.

[0005] This application provides a foot brake master cylinder, including an upper pump, a foot brake assembly, a brake caliper, an upper pump pipe, and a foot brake master cylinder having an upper pump connector, a piston chamber, and an oil outlet; a push-sealing assembly is provided in the piston chamber, and when the push-sealing assembly slides towards the oil outlet, it blocks the connection between the upper pump connector and the piston chamber.

[0006] Furthermore, the push-seal assembly includes a piston and a seal. The piston is slidably sealed and installed in the piston cavity. The piston is provided with several mounting ring grooves, and a seal is installed in each of the mounting ring grooves.

[0007] Furthermore, the sealing element is a leather cup sealing ring.

[0008] Furthermore, the upper pump connector is provided with a plug-in block, and a connector is fixedly provided at one end of the upper pump pipeline. The connector is provided with a plug-in groove that slides with the plug-in block. The outer peripheral wall of the connector is connected to a limit ring sleeve by a thread. Several locking grooves are evenly spaced and distributed circumferentially on the upper pump connector. The connector is provided with a locking element corresponding to the locking groove. By rotating the limit ring sleeve, the inner peripheral wall of the limit ring sleeve can be tightly contacted with the locking element, and the locking element can be inserted into the corresponding locking groove.

[0009] Each locking slot is equipped with a pop-out component.

[0010] Furthermore, the locking component includes a connecting block and a locking block. The connecting head is provided with a connecting groove corresponding to the locking groove. A rotating shaft is fixed in each connecting groove, and a connecting block is rotatably mounted on each rotating shaft. The connecting block is provided with a locking block, which can be inserted into the locking groove.

[0011] Furthermore, the pop-out component includes a pop-out spring and a pop-out block. A pop-out block is slidably installed in each locking groove, and a pop-out spring is provided in each locking groove. One end of the pop-out spring is pressed and fixed to the corresponding pop-out block, and the other end is pressed and fixed to the groove wall of the locking groove.

[0012] Furthermore, the upper pump connector is provided with a square positioning block, and the connector head is provided with a positioning groove that slides with the positioning block.

[0013] Furthermore, the connector block is provided with a sealing ring groove, and a sealing ring is installed in the sealing ring groove.

[0014] The beneficial effects of this utility model are as follows:

[0015] 1. By setting the push-sealing component, the piston blocks the connection between the upper pump connector and the piston chamber during the sliding process, thereby preventing brake fluid from flowing back into the upper pump;

[0016] 2. The connection between the connector and the upper pump connector can be conveniently achieved through the setting of the limiting ring, locking groove, connecting groove, locking part and pop-out part. Attached Figure Description

[0017] Figure 1 This is a connection diagram of a foot brake master cylinder in an embodiment of this application;

[0018] Figure 2 This is a schematic diagram of the foot brake master cylinder in the embodiments of this application;

[0019] Figure 3 This is a schematic diagram of the internal structure of the foot brake master cylinder in an embodiment of this application;

[0020] Figure 4 for Figure 3 Enlarged structural diagram at point A;

[0021] Figure 5 for Figure 4 Enlarged structural diagram at point B;

[0022] Figure 6 This is a partial exploded view of the master cylinder of the foot brake in the embodiment of this application.

[0023] Figure Labels

[0024] 1-Upper pump, 2-Foot brake assembly, 3-Brake caliper, 4-Foot brake master cylinder, 41-Upper pump connector, 42-Piston chamber, 43-Oil outlet, 44-Push seal assembly, 441-Piston, 442-Seal, 45-Piston spring, 5-Upper pump pipe, 51-Connector, 521-Plug groove, 522-Plug block, 53-Limiting ring sleeve, 54-Locking groove, 55-Connecting groove, 56-Locking element, 561-Connecting block, 562-Locking block, 563-Rotating shaft, 57-Ejector, 571-Ejector spring, 572-Ejector block, 581-Positioning block, 582-Positioning groove, 591-Sealing ring groove, 592-Sealing ring. Detailed Implementation

[0025] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0026] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0027] The foot brake master cylinder provided in this application will be described in detail below with reference to the accompanying drawings and through specific embodiments and application scenarios.

[0028] Example 1:

[0029] like Figures 1 to 3 As shown, this application embodiment provides a foot brake master cylinder, including an upper pump 1, a foot brake assembly 2, a brake caliper 3, an upper pump pipe 5, and a foot brake master cylinder 4 having an upper pump connector 41, a piston chamber 42, and an oil outlet 43; a push-sealing assembly 44 is provided in the piston chamber 42, and when the push-sealing assembly 44 slides towards the oil outlet 43, it blocks the connection between the upper pump connector 41 and the piston chamber 42.

[0030] Furthermore, the push-sealing assembly 44 includes a piston 441 and a seal 442. The piston 441 is slidably and sealingly installed in the piston cavity 42. The piston 441 is provided with a plurality of mounting ring grooves, and the seal 442 is installed in each of the mounting ring grooves.

[0031] Furthermore, the sealing element 46 is a leather cup sealing ring 592.

[0032] In this embodiment of the application, due to the above-described structure, the foot brake master cylinder 4 is provided with an upper pump connector 41, the upper pump 1 is connected to the upper pump connector 41 through the upper pump pipe 5, the foot brake master cylinder 4 is provided with a piston chamber 42 and an oil outlet 43, a piston 441 is slidably installed in the piston chamber 42, the foot brake assembly 2 is fixedly installed on the foot brake master cylinder 4, and its output end abuts against one end of the piston 441, the oil outlet 43 is connected to the brake caliper 3 through the brake pipe; wherein, a piston spring 45 is provided in the piston chamber 42, one end of the piston spring 45 abuts against the piston chamber 42, and the other end abuts against the end of the piston 441 facing away from the foot brake assembly 2;

[0033] The electric tricycle is equipped with one front wheel and two rear wheels. Each of the front wheel and the two rear wheels is equipped with a corresponding brake caliper 3. Braking can be achieved through the brake caliper 3. When in use, the user presses the foot brake assembly 2. The output end of the foot brake assembly 2 will push the piston 441 to slide along the piston chamber 42, while squeezing the piston spring 45. During the sliding process of the piston 441, the piston 441 will push the brake fluid in the piston chamber 42, so that the brake fluid flows through the oil outlet 43 to the three brake calipers 3, thereby completing the braking.

[0034] During the sliding process, piston 441 can block the connection between upper pump connector 41 and piston chamber 42, thereby preventing brake fluid from flowing back to upper pump 1;

[0035] The foot brake master cylinder 4 is equipped with an upper pump connector 41. The upper pump 1 is connected to the upper pump connector 41 through the upper pump pipe 5. The upper pump 1 is equipped with a piston. When in use, the user can also press the upper pump 1 to push the piston inside the upper pump 1. The piston pushes the brake fluid through the outlet 43 to flow to the three brake calipers 3, thereby completing the braking.

[0036] The piston 441 is provided with several mounting ring grooves, and each mounting ring groove is equipped with a seal 442. The seal 442 is a cup seal ring, which is used to enhance the sealing effect.

[0037] Example 2:

[0038] like Figure 2 , Figure 4 , Figure 5 and Figure 6As shown, in this embodiment, in addition to the structural features of the aforementioned embodiments, the upper pump connector 41 is provided with a plug block 522, one end of the upper pump pipe 5 is fixedly provided with a connector 51, the connector 51 is provided with a plug groove 521 that slides with the plug block 522, the outer peripheral wall of the connector 51 is connected to a limiting ring sleeve 53 by a thread, the upper pump connector 41 is provided with a plurality of locking grooves 54 evenly spaced circumferentially distributed, the connector 51 is provided with a locking member 56 corresponding to the locking groove 54, by rotating the limiting ring sleeve 53, the inner peripheral wall of the limiting ring sleeve 53 can be tightly contacted with the locking member 56, and the locking member 56 is inserted into the corresponding locking groove 54; wherein, each locking groove 54 is provided with a pop-out member 57.

[0039] Furthermore, the locking component 56 includes a connecting block 561 and a locking block 562. The connector 51 is provided with a connecting groove 55 corresponding to the locking groove 54. A rotating shaft 563 is fixedly installed in each connecting groove 55. A connecting block 561 is rotatably installed on each rotating shaft 563. A locking block 562 is provided on the connecting block 561. The locking block 562 can be inserted into the locking groove 54.

[0040] Furthermore, the pop-out component 57 includes a pop-out spring 571 and a pop-out block 572. A pop-out block 572 is slidably installed in each locking groove 54, and a pop-out spring 571 is provided in each locking groove 54. One end of the pop-out spring 571 is pressed and fixed to the corresponding pop-out block 572, and the other end is pressed and fixed to the groove wall of the locking groove 54.

[0041] Furthermore, the upper pump connector 41 is provided with a square positioning block 581, and the connector 51 is provided with a positioning groove 582 that slides with the positioning block 581.

[0042] Furthermore, the plug block 522 is provided with a sealing ring groove 591, and a sealing ring 592 is installed in the sealing ring groove 591.

[0043] In this embodiment of the application, due to the above-described structure, when it is necessary to conveniently connect the connector 51 to the upper pump connector 41, the positioning block 581 is aligned with the positioning groove 582, and the insertion block 522 is inserted into the insertion groove 521. By rotating the connecting block 561, the corresponding locking blocks 562 abut against the corresponding pop-out blocks 572. Then, by rotating the limiting ring 53, under the action of the thread, the limiting ring 53 moves downward and gradually pushes the connecting block 561 to rotate around the rotating shaft 563, so that the locking blocks 562 are inserted. The corresponding locking slot 54 is inserted and the corresponding pop-out spring 571 is squeezed until the limiting ring 53 moves into place. At this time, the locking ring will press and lock the connecting block 561, thus realizing the installation. When it is necessary to disassemble and replace, the limiting ring 53 is rotated in the opposite direction. Under the action of the thread, the limiting ring 53 moves upward, so that the limiting ring 53 and the connecting block 561 are separated. At this time, the pop-out spring 571 rebounds and pushes the corresponding pop-out block 572 to slide outward, so that the corresponding locking block 562 is disengaged from the locking slot 54, and the connector 51 and the upper pump connector 41 can be easily separated.

[0044] The upper pump connector 41 is provided with a sealing ring groove 591, and a sealing ring 592 is installed in the sealing ring groove 591. The sealing ring 592 is used to enhance the sealing effect and prevent brake fluid from flowing out from the gap.

[0045] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0046] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A master cylinder comprising an upper cylinder, a foot brake assembly, a brake caliper, an upper cylinder pipe and a master cylinder provided with an upper cylinder joint, a piston cavity, an oil outlet end, characterized in that, The piston cavity is provided with a push sealing assembly, and the push sealing assembly is slid in the direction of the oil outlet end to seal the communication between the upper pump connector and the piston cavity.

2. A foot brake master cylinder according to claim 1, wherein The push sealing assembly comprises a piston and a sealing member, the piston is slidably installed in the piston cavity, and a plurality of installation ring grooves are arranged on the piston.

3. A foot brake master cylinder according to claim 2, wherein The sealing member is a leather cup sealing ring.

4. A foot brake master cylinder according to claim 1, wherein The upper pump connector is provided with a plug-in block, one end of the upper pump pipeline is fixedly provided with a connector, the connector is provided with a plug-in groove in sliding cooperation with the plug-in block, the outer peripheral wall of the connector is connected with a limiting ring through a thread, the upper pump connector is circumferentially provided with a plurality of locking grooves at equal intervals, the connector is provided with a locking member corresponding to the locking grooves, the inner peripheral wall of the limiting ring is in close contact with the locking member by rotating the limiting ring, and the locking member is inserted into the corresponding locking groove. The locking groove is provided with a pop-up member.

5. A foot brake master cylinder according to claim 4, wherein The locking member comprises a connecting block and a locking block, the connector is provided with a connecting groove corresponding to the locking groove, the connecting groove is fixedly provided with a rotating shaft, the rotating shaft is rotatably installed with the connecting block, the connecting block is provided with the locking block, and the locking block is inserted into the locking groove.

6. A foot brake master cylinder according to claim 4, wherein The pop-up member comprises a pop-up spring and a pop-up block, the locking groove is slidably installed with the pop-up block, the locking groove is provided with the pop-up spring, one end of the pop-up spring is abutted and fixed to the corresponding pop-up block, and the other end is abutted and fixed to the groove wall of the locking groove.

7. A foot brake master cylinder according to claim 4, wherein The upper pump connector is provided with a square positioning block, and the connector is provided with a positioning groove in sliding cooperation with the positioning block.

8. A foot brake master cylinder according to claim 4, wherein The plug-in block is provided with a sealing ring groove, and the sealing ring groove is installed with a sealing ring. The plug-in block is provided with a sealing ring groove, and the sealing ring groove is installed with a sealing ring.

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