A quickly disassembled and assembled brake caliper

Abstract

The present application discloses a brake slave cylinder with quick disassembly and assembly, which includes a slave cylinder body and a mounting bracket, and also includes a pair of mounting structures respectively arranged at both ends of the mounting bracket. Each mounting structure includes a sleeve fixedly arranged on the mounting bracket with its inner cavity communicating vertically; a rotary connector threadedly connected to the sleeve and capable of being mutually fixed with the sleeve through a limiting member; and a pair of telescopic blocks movably installed at the bottom of the rotary connector and controlled to telescopically move through a transmission mechanism that cooperates with the inner cavity of the sleeve. During daily use, by adopting the above technical solution, the sleeve is aligned with a preset hole on a vehicle mounting part, and then the rotary connector is rotated to enable the pair of telescopic blocks to penetrate into the hole. The transmission mechanism acts to make each telescopic block extend out and cooperate with the tapered surface of the lower section of the hole. Then, the limiting member fixes the rotary connector to prevent it from rotating and loosening, thus completing the installation and fixation of the slave cylinder body without controlling the torque and without damaging the mounting parts on the vehicle.

Description

Technical Field

[0001] The present invention relates to a quickly disassembled and assembled brake caliper lower pump. Background Art

[0002] The brake caliper lower pump, also known as the brake caliper, is a key component in the automotive braking system, mainly composed of a caliper body, a piston, brake pads, a brake oil pipe, etc. The caliper body is the main frame of the brake caliper lower pump. The piston is installed in the caliper body. The brake pads are located between the caliper body and the brake disc. The brake oil pipe is responsible for transporting the brake oil from the master cylinder to the brake caliper lower pump. In the prior art, the brake pump is usually installed and fixed by screws, but screw installation has the following disadvantages:

[0003] When installing the screws, the tightening torque needs to be strictly controlled. If the torque is too small, the screws may not provide sufficient fastening force, resulting in loosening of the brake caliper lower pump during use; if the torque is too large, it may damage the screws, the installation holes of the brake caliper lower pump or related components, and even may cause the screws to slip or break, affecting the installation reliability and the normal use of the brake caliper lower pump;

[0004] Although the screws can provide good fastening effect during installation, during the long-term driving of the vehicle, due to the influence of factors such as vibration, thermal expansion and contraction, the screws may gradually loosen. Once the screws loosen, the installation stability of the brake caliper lower pump will be affected, and then brake failures may be caused, and it is necessary to regularly check and tighten the screws, increasing the maintenance workload. Summary of the Invention

[0005] The present invention aims to solve one of the technical problems existing in the prior art.

[0006] The present application provides a quickly disassembled and assembled brake caliper lower pump, including a lower pump body and a mounting bracket, and further including a pair of mounting structures respectively arranged at both ends of the mounting bracket, both including:

[0007] A sleeve, which is fixedly arranged on the mounting bracket and has a through cavity up and down;

[0008] A rotary connector, which is threadedly connected with the sleeve and can be mutually fixed with the sleeve through a limiting member;

[0009] A pair of telescopic blocks, which are movably installed at the bottom of the rotary connector and are controlled to expand and contract through a transmission mechanism cooperating with the inner cavity of the sleeve.

[0010] The rotary connector includes:

[0011] A lower segment, which is slidably installed in the inner cavity of the sleeve and has a middle segment rotatably installed at the top;

[0012] A mounting groove, which is arranged at the top of the middle segment and has an upper segment movably installed through a hinge shaft;

[0013] A handwheel, which is fixedly installed at the top of the upper section, and a notch for inserting with a limiting member is provided on the opposite side;

[0014] A limiting member, which is used to fix the upper section and the middle section;

[0015] Wherein, threads are provided on the outer peripheral walls of the upper section and the middle section, and a pair of telescopic blocks are movably installed on the lower section.

[0016] The limiting member includes:

[0017] A horizontal groove, which is arranged in the middle of the middle section;

[0018] A connecting hole, which is arranged at the top of the middle section and communicates with the middle of the horizontal groove;

[0019] A pair of engaging arc grooves, symmetrically arranged on the opposite inner walls of the installation groove;

[0020] A lifting and engaging member, which is floatingly installed in the connecting hole and the horizontal groove, is fixedly connected with the handwheel, and the two ends of the bottom are used for engaging with a pair of engaging arc grooves.

[0021] The engaging arc groove includes:

[0022] An arc groove, which is arranged on the inner side wall of the installation groove;

[0023] A pair of clamping grooves, which are respectively arranged at both ends of the arc groove and extend towards the rotating shaft;

[0024] Wherein, the arc groove is concentric with the rotating shaft, and its central angle is ninety degrees.

[0025] The lifting and engaging member includes:

[0026] A cover ring, which is fixedly arranged at the top of the middle section, and a vertical rod is movably installed in the inner ring;

[0027] A cross rod, which is arranged to move up and down in the horizontal groove, is fixedly connected with the lower end of the vertical rod in the middle, and both ends extend out of the horizontal groove;

[0028] A pressure spring, which is sleeved outside the vertical rod, and the two ends respectively abut against the cover ring and the cross rod.

[0029] The transmission mechanism includes:

[0030] A lower groove, which penetrates the lower part of the lower section from left to right;

[0031] An upper groove, which penetrates the upper part of the lower section from left to right and is connected to the lower groove through a central groove;

[0032] A central slide rod, which is slidably installed in the central groove, is provided with a return spring at the top, a connecting rod extending into the lower groove is fixedly provided at the bottom end, and a sliding rod is provided in the middle;

[0033] A pair of inner vertical grooves, symmetrically arranged at the bottom of the inner peripheral wall of the sleeve cavity, are respectively slidably matched with both ends of the sliding rod;

[0034] A pair of swing arms, one end of which is hinged to the inner end wall of each telescopic block respectively, and the other end is simultaneously hinged to the lower end of the connecting rod;

[0035] Wherein, a pair of telescopic blocks are respectively slidably installed at both ends of the lower groove.

[0036] The limiting member includes:

[0037] A pair of outer vertical grooves, symmetrically arranged on the outer peripheral wall of the sleeve;

[0038] A pair of floating blocks, which are respectively installed in each outer vertical groove through floating springs and can move up and down and slide;

[0039] A pair of inserting rods are respectively fixed at the top ends of the floating blocks and are used for inserting into the corresponding notches;

[0040] A collar is sleeved on the outer wall of the sleeve, and the inner ring is fixedly connected to the pair of floating blocks.

[0041] The limiting member further includes:

[0042] A pair of limiting vertical grooves are respectively arranged at the inner ends of the outer vertical grooves;

[0043] A pair of limiting bolts are symmetrically arranged on the collar, pass through the corresponding floating blocks and are in sliding fit with the corresponding limiting vertical grooves.

[0044] The limiting member further includes:

[0045] A semi-circular accommodating groove is arranged on the same side of the sleeve and the collar and is used for accommodating the upper section.

[0046] The beneficial effects of the present invention are as follows:

[0047] 1. Through the arrangement of the sleeve, the rotary connecting member, the limiting member, the transmission mechanism and a pair of telescopic blocks, by rotating the rotary connecting member, the pair of telescopic blocks pass through the preset holes on the mounting parts of the corresponding mounting plates on the vehicle, and then extend outwards, so that the rotary connecting member cannot withdraw from the holes, and then the limiting member fixes the rotary connecting member to prevent it from rotating and loosening, thus completing the installation. There is no need to control the torque, and there is no risk of loosening, which improves the firmness and convenience of the installation of the brake lower pump;

[0048] 2. Through the arrangement of the lower section, the middle section, the mounting groove, the upper section, the hinge shaft, the hand wheel and the limiting member, when installation is not required, the height of the installation structure is reduced, which is convenient for packaging and transportation;

[0049] 3. Through the arrangement of a pair of outer vertical grooves, a pair of floating blocks, a pair of inserting rods, the collar, a pair of limiting vertical grooves, a pair of limiting bolts and the semi-circular accommodating groove, the rotary connecting member in the installed state or the non-installed state can be fixed to prevent it from loosening, improve the firmness of the rotary connecting member or avoid the loss of the rotary connecting member. Description of the Drawings

[0050] Figure 1 This is the front view of the quick-disassembly brake lower pump in the embodiment of the present application;

[0051] Figure 2 is Figure 1 the schematic cross-sectional structure diagram in the A-A direction in

[0052] Figure 3 is Figure 2 the partial enlarged structure diagram at position B in

[0053] Figure 4 This is the schematic diagram of the clamping arc groove structure in the embodiment of the present application.

[0054] Reference numerals

[0055] 1 - Lower pump body, 2 - Mounting bracket, 3 - Mounting structure, 31 - Sleeve, 32 - Rotating connector, 321 - Lower segment, 322 - Middle segment, 323 - Mounting groove, 324 - Upper segment, 325 - Handwheel, 326 - Notch, 33 - Limiting member, 331 - Outer vertical groove, 332 - Floating block, 333 - Floating spring, 334 - Insert rod, 335 - Ring sleeve, 336 - Limiting vertical groove, 337 - Limiting bolt, 338 - Semi-circular accommodating groove, 34 - Telescopic block, 35 - Transmission mechanism, 351 - Lower groove, 352 - Upper groove, 353 - Central groove, 354 - Central slide bar, 355 - Slide bar, 356 - Inner vertical groove, 357 - Swing arm, 4 - Position-limiting member, 41 - Horizontal groove, 42 - Connecting hole, 43 - Clamping arc groove, 431 - Arc groove, 432 - Card slot, 44 - Lifting and clamping member, 441 - Cover ring, 442 - Vertical rod, 443 - Cross bar, 444 - Pressure spring. Detailed implementation manners

[0056] Next, the technical solutions in the embodiments of the present application will be clearly described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art belong to the scope of protection of the present application.

[0057] The terms "first", "second", etc. in the description and claims of the present application are used to distinguish similar objects, rather than to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances so that the embodiments of the present application can be implemented in an order other than those illustrated or described herein, and the objects distinguished by "first", "second", etc. are usually of the same type, and the number of objects is not limited. For example, the first object can be one or multiple. In addition, "and / or" in the description and claims means at least one of the connected objects, and the character " / ", generally represents an "or" relationship between the associated objects before and after.

[0058] The quick-disassembly and assembly brake pump provided in the embodiment of the present application will be described in detail below through specific embodiments and application scenarios in conjunction with the accompanying drawings.

[0059] Embodiment 1:

[0060] like Figures 1 to 3 As shown, the embodiment of the present application provides a brake lower pump that can be quickly disassembled and assembled, including a lower pump body 1 and a mounting bracket 2, and also includes a pair of mounting structures 3, which are respectively arranged at both ends of the mounting bracket 2, and each includes a sleeve 31, which is fixed on the mounting bracket 2, and the inner cavity passes through from top to bottom; a rotating connecting piece 32, which is connected to the sleeve 31 by a thread, and can be fixed to the sleeve 31 by a limiting piece 33; a pair of telescopic blocks 34, which are movably mounted at the bottom of the rotating connecting piece 32, and the telescopic block is controlled by a transmission mechanism 35 that cooperates with the inner cavity of the sleeve 31.

[0061] Furthermore, the rotating connecting member 32 includes a lower section 321, which is slidably installed in the inner cavity of the sleeve 31, and the middle section 322 is rotatably installed on the top; a mounting groove 323, which is arranged on the top of the middle section 322, and the upper section 324 is movably installed through a hinge shaft; a hand wheel 325, which is fixedly arranged on the top of the upper section 324, and a notch 326 for plugging with the limiting member 33 is provided on the opposite side; a limiting member 4, which is used to fix the upper section 324 and the middle section 322, and the outer peripheral walls of the upper section 324 and the middle section 322 are provided with threads, and a pair of telescopic blocks 34 are movably installed on the lower section 321.

[0062] In this embodiment of the present application, due to the adoption of the above-mentioned structure, during installation, the mounting structure 3 on the mounting bracket 2 is aligned with the preset hole on the vehicle mounting part, and then the upper section 324 is turned to rotate around the hinge shaft to be coaxial with the middle section 322 and the lower section 321, and then the hand wheel 325 is turned to make the upper section 324 and the middle section 322 and the sleeve 31 transmit through the thread, and the upper section 324, the middle section 322 and the lower section 321 descend in the sleeve 31, and the lower section 321 passes through the sleeve 31 and extends into the preset hole on the vehicle mounting part, and the lower section 321 continues to extend into the preset hole on the vehicle mounting part, and at the same time the transmission mechanism 35 is actuated, The telescopic blocks 34 are extended, and the outer ends of the telescopic blocks 34 are inclined. The lower ends of the holes preset on the vehicle mounting parts are conical surfaces, so that the telescopic blocks 34 are smoothly matched with the inner peripheral walls of the holes preset on the vehicle mounting parts during the process of descending and extending, until the bottom surface of the hand wheel 325 abuts against the top surface of the sleeve 31, and the limiting member 33 fixes the sleeve 31 so that it can no longer rotate relative to the sleeve 31, and the extension degree of each telescopic block 34 is also fixed. At this time, the distance between the outer ends of a pair of telescopic blocks 34 is at the maximum extent, which is greater than the width of the preset holes on the vehicle mounting parts close to the end of the mounting bracket 2. At this time, the mounting bracket 2 is fixed to the vehicle mounting parts;

[0063] During disassembly, reverse the handwheel 325. The upper section 324, the middle section 322, the lower section 321, and a pair of telescopic blocks 34 all move away from the vehicle mounting part. At the same time, the transmission mechanism 35 operates to make the pair of telescopic blocks 34 approach each other. During this process, the inclined outer ends of the pair of telescopic blocks 34 remain in cooperation with the conical surface of the lower section 321 of the preset hole on the vehicle mounting part. When the distance between the outer ends of the pair of telescopic blocks 34 is less than the minimum diameter of the top end of the conical surface of the preset hole on the vehicle mounting part, the mounting bracket 2 can be directly moved away from the vehicle mounting part to complete the disassembly operation.

[0064] Embodiment 2:

[0065] As Figures 2 to 3 shown, in this embodiment, in addition to including the structural features of the foregoing embodiment, the limiting member 4 includes a transverse groove 41 provided in the middle of the middle section 322; a connecting hole 42 provided at the top of the middle section 322 and communicating with the middle of the transverse groove 41; a pair of engaging arc grooves 43 symmetrically provided on the opposite inner walls of the mounting groove 323; and a lifting and engaging member 44 floatingly installed in the connecting hole 42 and the transverse groove 41, fixedly connected to the handwheel 325, and the two ends of the bottom are used for engaging with the pair of engaging arc grooves 43.

[0066] Furthermore, the engaging arc groove 43 includes an arc groove 431 provided on the inner side wall of the mounting groove 323; a pair of clamping grooves 432 respectively provided at both ends of the arc groove 431 and extending towards the rotating shaft. The arc groove 431 is concentric with the rotating shaft and has a central angle of ninety degrees.

[0067] Furthermore, the lifting and engaging member 44 includes a cover ring 441 fixedly provided at the top of the middle section 322, with a vertical rod 442 movably installed in the inner ring; a cross bar 443 whose lifting is arranged in the transverse groove 41, the middle part of which is fixedly connected to the lower end of the vertical rod 442, and both ends extend out of the transverse groove 41; and a compression spring 444 sleeved outside the vertical rod 442, with both ends respectively abutting against the cover ring 441 and the cross bar 443.

[0068] In this embodiment of the present application, due to the adoption of the above structure, when the upper section 324 is located outside the sleeve 31, the handwheel 325 is lifted outwards, and the vertical rod 442 and the cross rod 443 rise simultaneously. The compression spring 444 is compressed and shortened. The two ends of the cross rod 443 enter the corresponding arc grooves 431 from the corresponding card slots 432. Then, the upper section 324 is pulled to rotate around the hinge axis until it is perpendicular to the middle section 322. The two ends of the cross rod 443 slide towards the other end of the corresponding arc groove 431. Then, the handwheel 325 is released, and the compression spring 444 releases its elastic potential energy, pushing the handwheel 325, the vertical rod 442 and the cross rod 443 to descend, so that the two ends of the cross rod 443 are inserted into the card slots 432 at the other end of the corresponding arc groove 431. When it is necessary to extend the lower section 321 into the preset hole in the vehicle mounting part, the handwheel 325 is pulled outwards from the upper section 324, and the two ends of the cross rod 443 are disengaged from the corresponding card slots 432. Then, the upper section 324 is pulled until it is coaxial with the middle section 322. Then, the handwheel 325 is released, and the two ends of the cross rod 443 are inserted into the corresponding card slots 432 at this time. Then, by rotating the handwheel 325, the upper section 324, the middle section 322 and the lower section 321 can be rotated to make the lower section 321 extend into the preset hole in the vehicle mounting part.

[0069] Embodiment 3:

[0070] As Figures 2 to 3 shown, in this embodiment, in addition to including the structural features of the foregoing embodiment, the transmission mechanism 35 includes a lower groove 351 that penetrates through the lower part of the lower section 321 from left to right; an upper groove 352 that penetrates through the upper part of the lower section 321 from left to right and is connected to the lower groove 351 through a central groove 353; a central sliding rod 354 that is slidably installed in the central groove 353, with a return spring provided at the top, a connecting rod extending into the lower groove 351 fixed at the bottom end, and a sliding rod 355 provided in the middle; a pair of inner vertical grooves 356 that are symmetrically arranged at the bottom of the inner peripheral wall of the sleeve 31 and are respectively slidably engaged with the two ends of the sliding rod 355; a pair of swing arms 357, one end of each of which is hinged to the inner end wall of each telescopic block 34, and the other end is simultaneously hinged to the lower end of the connecting rod. A pair of telescopic blocks 34 are respectively slidably installed at both ends of the lower groove 351.

[0071] In this embodiment of the present application, due to the adoption of the above structure, when the lower section 321 descends in the inner cavity of the sleeve 31, the sliding rod 355 descends in the pair of inner vertical grooves 356. Until a pair of telescopic blocks 34 enter the lower half of the conical surface of the preset hole in the vehicle mounting part, the two ends of the sliding rod 355 contact the bottom surface of the pair of inner vertical grooves 356, fixing the position of the central sliding rod 354. The lower section 321 and the pair of telescopic sliders continue to descend, the return spring is compressed and shortened, and the pair of swing arms 357 swing, with the two ends moving away from each other, pushing the corresponding telescopic sliders to extend out of the lower groove 351. During the descent of each telescopic slider, the outer end continuously extends and remains in contact with the conical surface of the lower half of the preset hole in the vehicle mounting part;

[0072] When the lower section 321 rises in the inner cavity of the sleeve 31, the return spring releases its elastic potential energy, pushing the central slide bar 354 down in the central groove 353, and a pair of swing arms 357 swing, with both ends approaching each other, pulling a pair of telescopic slide blocks to retract into the lower groove 351 and rise at the same time. The effect presented is that during the process of a pair of telescopic blocks 34 rising in the conical surface of the lower half of the preset hole on the vehicle mounting part, the outer ends remain in contact with the inner circumferential wall of the conical surface, and after the pair of telescopic blocks 34 are completely separated from the lower half of the preset hole on the vehicle mounting part, the pair of telescopic blocks 34 also completely enter the lower groove 351.

[0073] Embodiment 4:

[0074] like Figures 2 to 3 As shown, in this embodiment, in addition to the structural features of the aforementioned embodiments, the limiting member 33 includes a pair of outer vertical grooves 331, symmetrically arranged on the outer peripheral wall of the sleeve 31; a pair of floating blocks 332, respectively lifted and slidably installed in each outer vertical groove 331 through floating springs 333; a pair of plug rods 334, respectively fixed on the top of each floating block 332, for plugging with the corresponding notch 326; a ring sleeve 335, sleeved on the outer wall of the sleeve 31, and the inner ring is fixedly connected to the pair of floating blocks 332.

[0075] Furthermore, the limiting member 33 also includes a pair of limiting vertical grooves 336, which are respectively arranged at the inner ends of each outer vertical groove 331; a pair of limiting bolts 337 are symmetrically arranged on the ring sleeve 335, and after passing through the corresponding floating blocks 332, they are slidably matched with the corresponding limiting vertical grooves 336.

[0076] Furthermore, the limiting member 33 further includes a semicircular receiving groove 338 , which is disposed on the same side of the sleeve 31 and the ring sleeve 335 , and is used to receive the upper section 324 .

[0077] The cam 334 is pressed against the top of the handle 325 and the bottom of the handle 325 is pressed against the top of the handle 325, and the cam 334 is pressed against the top of the handle 325.

[0078] When the upper section 321 is turned over until its axis is perpendicular to the axis of the middle section 322 , the outer wall of the upper end 321 engages with the semicircular receiving groove 338 , so that the middle section 322 can no longer rotate and prevent it from escaping from the sleeve 31 .

[0079] It should be noted that in this document, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, such that a process, method, article or device comprising a series of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation, an element defined by the phrase "comprising an..." does not exclude the presence of additional identical elements in the process, method, article or device comprising that element. In addition, it should be pointed out that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in the reverse order according to 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.

[0080] The embodiments of the present application have been described above in conjunction with the accompanying drawings. However, the present application is not limited to the above specific embodiments. The above specific embodiments are merely illustrative and not restrictive. Those of ordinary skill in the art, under the inspiration of the present application and without departing from the spirit of the present application and the scope protected by the claims, can still make many forms, all of which fall within the protection scope of the present application.

Claims

1. A brake slave cylinder for quick disassembly and assembly, comprising a slave cylinder body (1) and a mounting bracket (2), characterized in that, It further includes a pair of mounting structures (3), which are respectively arranged at both ends of the mounting bracket (2) and each includes: A sleeve (31), which is fixedly arranged on the mounting bracket (2) and has a through cavity vertically; A rotary connecting member (32), which is threadedly connected with the sleeve (31) and can be fixed to the sleeve (31) through a limiting member (33); A pair of telescopic blocks (34), which are movably installed at the bottom of the rotary connecting member (32) and are controlled to expand and contract through a transmission mechanism (35) that cooperates with the inner cavity of the sleeve (31); The rotary connecting member (32) includes: A lower section (321), which is slidably installed in the inner cavity of the sleeve (31) and has a middle section (322) rotatably installed at the top; A mounting groove (323), which is arranged at the top of the middle section (322) and has an upper section (324) movably installed through a hinge shaft; A handwheel (325), which is fixedly arranged at the top end of the upper section (324) and has a notch (326) on the opposite side for inserting the limiting member (33); A limiting member (4), which is used to fix the upper section (324) and the middle section (322); Wherein, threads are provided on the outer peripheral walls of the upper section (324) and the middle section (322), and a pair of telescopic blocks (34) are movably installed on the lower section (321); The transmission mechanism (35) includes: A lower groove (351), which penetrates the lower part of the lower section (321) horizontally; An upper groove (352), which penetrates the upper part of the lower section (321) horizontally and is connected to the lower groove (351) through a central groove (353); A central sliding rod (354), which is slidably installed in the central groove (353), has a return spring at the top, a connecting rod extending into the lower groove (351) fixedly arranged at the bottom end, and a sliding rod (355) in the middle; A pair of inner vertical grooves (356), which are symmetrically arranged at the bottom of the inner peripheral wall of the sleeve (31) and are respectively slidably matched with both ends of the sliding rod (355); A pair of swing arms (357), one end of each is respectively hinged to the inner end wall of each telescopic block (34), and the other end is simultaneously hinged to the lower end of the connecting rod; Wherein, a pair of the telescopic blocks (34) are respectively slidably installed at both ends of the lower groove (351); The limiting member (33) includes: A pair of outer vertical grooves (331), which are symmetrically arranged on the outer peripheral wall of the sleeve (31); A pair of floating blocks (332), which are respectively installed in each of the outer vertical grooves (331) through a floating spring (333) and can slide up and down; A pair of insertion rods (334), which are respectively fixedly arranged at the top ends of each floating block (332) and are used to insert into the corresponding notch (326); A ring sleeve (335), which is sleeved on the outer wall of the sleeve (31) and has an inner ring fixedly connected to a pair of floating blocks (332).

2. The quick-disassembly and quick-assembly brake lower pump according to claim 1, wherein The limiting member (4) includes: A horizontal groove (41), which is arranged in the middle of the middle section (322); A connecting hole (42), which is arranged at the top end of the middle section (322) and is communicated with the middle of the horizontal groove (41); A pair of engaging arc grooves (43), which are symmetrically arranged on the opposite inner walls of the mounting groove (323); The lifting engagement member (44) is floatingly installed in the connection hole (42) and the transverse groove (41), fixedly connected to the handwheel (325), and the two ends of the bottom are used to engage with a pair of engaging arc grooves (43).

3. The quick-disassembly and quick-assembly brake lower pump according to claim 2, characterized in that, The engaging arc groove (43) includes: An arc groove (431) provided on the inner side wall of the installation groove (323); A pair of card slots (432) respectively provided at both ends of the arc groove (431) and extending towards the rotating shaft; Wherein, the arc groove (431) is concentric with the rotating shaft and has a central angle of 90 degrees.

4. The quick-disassembly and assembly brake slave cylinder according to claim 3, characterized in that The lifting engagement member (44) includes: A cover ring (441) fixedly provided at the top of the middle section (322), and a vertical rod (442) is movably installed in the inner ring; A cross bar (443) is vertically installed in the transverse groove (41), the middle part is fixedly connected to the lower end of the vertical rod (442), and both ends extend out of the transverse groove (41); A compression spring (444) is sleeved outside the vertical rod (442), and both ends are respectively abutted against the cover ring (441) and the cross bar (443).

5. A quick-disassembly and assembly brake lower pump according to claim 1, characterized in that, The limiting member (33) further includes: A pair of limiting vertical grooves (336) respectively provided at the inner ends of the respective outer vertical grooves (331); A pair of limiting bolts (337) are symmetrically arranged on the collar (335), pass through the corresponding floating blocks (332) and are slidably matched with the corresponding limiting vertical grooves (336).

6. The quick-disassembly and assembly brake caliper according to claim 1, wherein, The limiting member (33) further includes: A semi-circular receiving groove (338) provided on the same side of the sleeve (31) and the collar (335) for receiving the upper section (324).

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