Wire puller and oil pump integrated device and disc and drum brake linkage type braking system

Abstract

The invention relates to the technical field of brakes, and discloses a wire puller and oil pump integrated device and a disc drum brake linkage type brake system.The wire puller and oil pump integrated device comprises a shell, a sliding block, a pull rope, a linkage mechanism, an oil pump and a brake oil container, the oil pump comprises an oil pump body, a piston and a reset spring, and the oil pump body communicates with the brake oil container; brake oil in the brake oil container can enter the oil pump main body; the sliding block is accommodated in the shell, is connected with the pull rope and can transversely move under the pull of the pull rope; the linkage mechanism is used for driving the piston to move into the oil pump body in the process that the sliding block is pulled by the pull rope to move transversely and driving the sliding block to return to the initial position when the piston returns. During braking, the pull rope is pulled to drive the sliding block to move transversely, then the piston is driven by the linkage mechanism to move into the oil pump body, and brake oil in the brake oil container is pressed out by the front end of the piston rod. Front-back linkage braking can be achieved, and the braking distance is greatly reduced.

Description

Technical Field

[0001] The present application relates to the technical field of brakes, and in particular to an integrated device of a cable puller and an oil pump and a disc-drum brake linkage brake system. Background Art

[0002] At present, the brake system of motorcycles and electric bicycles generally consists of front wheel disc brakes and rear wheel drum brakes, with a manual controller attached to the handlebars. Generally speaking, the left manual controller controls the rear wheel drum brake, using a steel wire to pull the drum brake shoe to obtain braking force; the right manual controller controls the front wheel disc brake, using an oil pump to provide oil pressure to clamp the brake pads on the disc to obtain braking force. When driving at a high speed or in an emergency, if the front and rear brake force distribution is not well controlled, it is easy to slip, roll over, and cause serious safety accidents. Summary of the invention

[0003] In order to solve the above technical problems, the purpose of the present invention is to provide an integrated device of a cable puller and an oil pump and a disc-drum brake linkage brake system that can realize front and rear linkage braking.

[0004] The technical solution provided by the present invention is as follows: A device integrating a wire puller and an oil pump comprises a shell, a slider, a wire pull rope, a linkage mechanism, an oil pump and a brake oil container, wherein the oil pump comprises an oil pump body, a piston and a return spring, wherein the oil pump body is connected to the brake oil container so that the brake oil in the brake oil container can enter the oil pump body; the slider is accommodated in the shell, connected to the wire pull rope and can move laterally under the pull of the wire pull rope; the linkage mechanism is used to drive the piston to move into the oil pump body during the lateral movement of the slider pulled by the wire pull rope, and drive the slider back to the initial position when the piston returns; when braking, the wire pull rope drives the slider to move laterally after being pulled, and then drives the piston to move into the oil pump body through the linkage mechanism, and the front end of the piston rod presses the brake oil in the brake oil container out through the oil pump body and the oil pump opening on the oil pump body; after the brake is released, the wire pull rope is loosened, and the return spring resets the auxiliary piston to return to its position, so that the brake oil returns to the brake oil container, and the piston drives the slider back to its initial position through the linkage mechanism.

[0005] Preferably, the housing, the brake oil container and the oil pump body are an integrated structure.

[0006] Preferably, the slider is provided with two transversely extending through holes, and two sliding shafts with both ends fixed to the side walls of the shell are provided corresponding to the through holes, the rear wall of the shell is provided with two sliding grooves, and the slider is provided with two support rods corresponding to the sliding grooves. The slider cooperates with the sliding shaft through the through holes, and the support rod cooperates with the slider, so that the slider can only move laterally within a limited stroke.

[0007] Preferably, the oil pump body is provided with a piston hole and a first through hole which are arranged front and back and connected, the piston rod of the piston is limited in the first through hole, and the front end sealing baffle of the piston is located in the piston hole and can reciprocate; a first circular groove hole is provided on the outer side of the rear end periphery of the piston hole, and the piston is correspondingly provided with a second circular groove hole, and the first circular groove hole and the second circular groove hole cooperate to limit and place the return spring; a rubber protective sleeve for protecting the return spring is provided between the first circular groove hole and the second circular groove hole.

[0008] Preferably, the linkage mechanism is a swingable lever, the upper end of the lever is used to contact the rear end of the piston, and the lower end of the lever is used to contact the slider.

[0009] Preferably, the rear end of the piston is provided with a rear end baffle for contacting the upper end of the lever; the lower end of the slider is provided with a boss for contacting the lower end of the lever.

[0010] Preferably, the side wall of the shell is provided with a square opening for the lever to swing, and the lower end of the square opening has a step cut to provide a safe distance for the lower end of the lever when the stroke is maximum; pivot holes for locating the rotation position of the lever axis are also provided on both sides of the square opening.

[0011] Preferably, when the lower end of the lever contacts the slider, there is a gap between the upper end of the lever and the rear end of the piston.

[0012] Preferably, there are three pull ropes, namely the first pull rope, the second pull rope and the third pull rope, all of which are fixed to the slider and are arranged in parallel at the upper, middle and lower positions respectively; the first pull rope and the third pull rope are used to connect the brake handle, and the second pull rope is used to connect the drum brake device to control the drum brake device at the same time.

[0013] A disc-drum brake linked brake system includes a brake handle, a drum brake device, a disc brake device, and the integrated cable puller and oil pump device as described above, wherein the first cable pull cord and the third cable pull cord are connected to the brake handle, the second cable pull cord is connected to the drum brake device to simultaneously control the drum brake device, and the oil pump opening is connected to the disc brake device to enable the first cable pull cord and the third cable pull cord to simultaneously control the drum brake device and the disc brake device.

[0014] Compared with the prior art, the integrated cable puller and oil pump device and the disc-drum brake linkage brake system of the present invention can control the oil pump by the cable puller through the integrated arrangement of the cable puller and the oil pump, thereby realizing front and rear linkage braking and greatly reducing the braking distance. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 It is a three-dimensional exploded view of the integrated device of the wire puller and the oil pump according to an embodiment of the present invention; Figure 2 for Figure 1 A three-dimensional view of the housing cover in the integrated device of the cable puller and the oil pump shown; Figure 3 for Figure 1 A three-dimensional view of the first cable pull rope in the cable puller and oil pump integrated device; Figure 4 for Figure 1 A three-dimensional view of the second cable pull rope in the cable puller and oil pump integrated device; Figure 5 for Figure 1 A three-dimensional view of the third cable pull rope in the cable puller and oil pump integrated device shown; Figure 6 for Figure 1 A three-dimensional view of the housing in the integrated device of the wire puller and the oil pump shown; Figure 7 for Figure 6 A three-dimensional view of the housing from another angle; Figure 8 for Figure 6 A top view of the housing shown; Fig. 9 for Figure 6 a side view of the housing shown; Fig.10 for Figure 6 a side cross-sectional view of the housing shown; Fig.11 for Figure 1 A three-dimensional diagram of a slide block in the integrated device of a cable puller and an oil pump shown; Fig.12 for Fig.11 a rear view of the slider shown; Fig.13 for Fig.11 a side view of the slider shown; Fig.14 for Figure 1 A three-dimensional view of the first sleeve in the integrated device of the wire puller and the oil pump; Fig.15 for Figure 1 A three-dimensional view of the second sleeve in the integrated device of the wire puller and the oil pump; Fig.16 for Figure 1 A three-dimensional view of the oil seal cover in the integrated device of the wire puller and the oil pump shown; Fig.17 for Figure 1 A three-dimensional view of the piston in the integrated device of the wire puller and the oil pump shown; Fig.18 for Figure 1 A three-dimensional diagram of a lever in the integrated device of the cable puller and the oil pump shown; Fig.19 for Figure 1 The schematic diagram of the integrated device of the cable puller and the oil pump is shown in the initial state (the housing cover is not shown); Fig. 20 for Figure 1 The schematic diagram of the integrated cable puller and oil pump device shown is in a braked state (the housing cover is not shown).

[0017] In the figure, 1-shell cover, 101-first slot, 102-second slot, 103-third slot, 104-fourth slot, 105-second limiting hole, 106-third limiting hole, 107-first limiting hole, 108-sinking box, 2-shell, 201-eighth slot, 202-sixth limiting hole, 203-fifth limiting hole, 204-sixth slot, 205-seventh slot, 206-fourth limiting hole , 207-fifth slot, 208-second slide, 209-first slide, 210-oil pump opening, 211-oil pump body, 212-square opening, 213-brake oil container, 214-pivot hole, 215-first screw hole, 216-opening, 217-square opening, 218-first through hole, 219-first circular groove hole, 221-piston hole, 222-step cut, 3-slider, 301- second through hole, 302-first threading groove, 303-second threading groove, 304-third threading groove, 305-third through hole, 306-first support rod, 307-second support rod, 308-boss, 4-rubber protective sleeve, 5-return spring, 6-piston, 601-front end sealing baffle, 602-piston rod, 603-second circular groove hole, 604-rear end baffle, 7-lever, 701-shaft hole, 70 2-upper end, 703-lower end, 8-first sliding shaft, 9-first bushing, 10-second pull rope, 1001-second stopper, 1002-second pull rod, 11-first pull rope, 111-first stopper, 112-first pull rod, 12-third pull rope, 121-third stopper, 122-third pull rod, 13-second bushing, 14-second sliding shaft, 15-oil seal cover, 151-second screw hole. DETAILED DESCRIPTION

[0018] In order to enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be clearly and completely described below. Obviously, the described embodiments are only part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0019] It should be noted that when an element is referred to as being "fixed on" or "set on" another element, it can be directly on the other element or indirectly set on the other element; when an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0020] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0021] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, "multiple" and "several" mean two or more, unless otherwise clearly and specifically defined.

[0022] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the conditions under which this application can be implemented. Therefore, they have no substantive technical significance. Any structural modification, change in proportional relationship or adjustment of size should still fall within the scope of the technical content disclosed in this application without affecting the effects and purposes that can be achieved by this application.

[0023] like Figures 1 to 20 As shown, an embodiment of the present invention provides an integrated device of a cable puller and an oil pump, including a housing, a slider, a cable pull rope, a linkage mechanism, an oil pump, and a brake oil container.

[0024] The housing comprises a housing cover 1 and a housing body 2 which are assembled and fixed.

[0025] like Figure 2As shown, the shell cover 1 is in a rectangular parallelepiped shape, and is provided with a first limiting hole 107 for limiting the first pull rope 11, a second limiting hole 105 for limiting the second pull rope 10, and a third limiting hole 106 for limiting the third pull rope 12. The shell cover 1 is provided with a first slot 101 and a second slot 102 for limiting the first slide shaft 8; a third slot 103 and a fourth slot 104 for limiting the second slide shaft 14. The shell cover 1 is provided with a sinking box 108 for accommodating internal parts.

[0026] This embodiment is provided with three pull ropes: a first pull rope 11, a second pull rope 10, and a third pull rope 12, which are all welded and fixed to the slider 3, and are respectively arranged in parallel at the upper, middle, and lower positions. Among them, the first pull rope 11 and the third pull rope 12 located at the upper and lower positions are used to connect the brake handles. During the braking stroke, the slider 3 is pulled to move to the right. Since the tensile stress generated in this process is relatively large, two pull ropes are used. The second pull rope 10 in the middle is used to connect the drum brake device at the rear wheel. Its functions are to control the drum brake device to achieve braking, and to pull the slider 3 back when the braking operation is released (this is because the spring of the drum brake device can pull back the second pull rope 10, but the second pull rope 10 only plays an auxiliary role, and the restoring force to pull the slider 3 back is more provided by the return spring).

[0027] like Figure 3 As shown, the first pull rope 11 is provided with a first pull rod 112, which is used to be limited in the first limit hole 107 and the fourth limit hole 206 on the housing 2, and the first limit hole 107 and the fourth limit hole 206 are in a coaxial matching state. The first pull rope 11 is provided with a first stopper 111, which cooperates with the outer end of the second threading groove 303 of the slider 3, and is used to push the slider 3 during the slider travel process.

[0028] like Figure 4 As shown, the second pull rope 10 is provided with a second pull rod 1002, which is used to be limited in the second limiting hole 105 and the fifth limiting hole 203 on the housing 2, and the second limiting hole 105 and the fifth limiting hole 203 are in a coaxial matching state. The second pull rope 10 is provided with a second stopper 1001, which cooperates with the outer end of the first threading groove 302 of the slider 3, and is used to push the slider 3 during the slider travel process.

[0029] like Figure 5 As shown, the third pull rope 12 is provided with a third pull rod 122, which is used to be limited in the third limiting hole 106 and the sixth limiting hole 202 on the housing 2, and the third limiting hole 106 and the limiting hole are in a coaxial matching state. The third pull rope 12 is provided with a third stopper 121, which cooperates with the outer end of the third threading groove 304 of the slider 3, and is used to push the slider 3 during the slider travel process.

[0030] like Figures 6 to 10As shown, the housing 2 is a special shape, and is provided with a fourth limiting hole 206, a fifth limiting hole 203, and a sixth limiting hole 202, which are coaxially matched with the first limiting hole 107, the second limiting hole 105, and the third limiting hole 106 on the housing cover 1, respectively. The housing 2 is provided with a fifth slot 207 and a sixth slot 204, which are coaxially matched with the second slot 102 and the first slot 101 on the housing cover 1, respectively. The housing 2 is provided with a seventh slot 205 and an eighth slot 201, which are coaxially matched with the fourth slot 104 and the third slot 103 on the housing cover 1, respectively. The housing 2 is provided with a first slide 209 and a second slide 208, which are respectively matched with the first support rod 306 and the second support rod 307 on the slider 3, and the first support rod 306 and the second support rod 307 can slide in the first slide 209 and the second slide 208 limit stroke. The housing 2 is integrally formed with an oil pump body 211, and an oil pump opening 210 is provided at the front end. The housing 2 is also integrally formed with a brake oil container 213 above the oil pump body 211, and the brake oil container 213 is provided with a square opening 217 to meet the required brake oil content. The housing 2 is provided with a first screw hole 215, which cooperates with the second screw hole 151 on the oil seal cover 15 to play a sealing role. The oil pump body 211 is provided with a piston hole 221 and a first through hole 218 arranged front and back and connected. The piston rod 602 of the piston 6 can be limited in the first through hole 218, and the piston hole 221 has a limiting and sealing effect on the front end sealing baffle 601 of the piston 6, so that the front end sealing baffle 601 is accommodated in the piston hole 221 and can reciprocate. An opening 216 is provided in the brake oil container 213, and the opening 216 is connected to the square opening 217 and communicated with the inner wall of the oil pump body 211, so that the brake oil in the brake oil container 213 and the oil pump body 211 can be exchanged. A first circular groove hole 219 is provided on the outer side of the rear end periphery of the first through hole 218, and the first circular groove hole 219 serves to place and limit the return spring 5. A square opening 212 is provided in the housing 2 for the swing of the lever 7. A step cutout 222 is provided at the lower end of the square opening 212 to provide a safe distance for the lower end 703 of the lever 7 when the stroke is maximum. The housing 2 is also provided with pivot holes 214 on both sides of the square opening 212 for positioning the axial rotation position of the lever 7.

[0031] like Figures 11 to 13 As shown, the slider 3 is provided with a second through hole 301 and a third through hole 305 which are coaxially matched with the first sliding shaft 8 and the second sliding shaft 14 respectively, and the slider 3 can slide on the first sliding shaft 8 and the second sliding shaft 14. The slider 3 is provided with a boss 308, and the lower end 703 of the lever 7 is tangent to it during the swinging process, and the boss 308 plays a driving role in the stroke process. The first threading groove 302, the second threading groove 303, and the third threading groove 304 are respectively matched with the second pull rope 10, the first pull rope 11, and the third pull rope 12, and the slider 3 is constrained to move by the wire rope during the reciprocating motion.

[0032] like Fig.14 , 15 Combination Figure 1 As shown, the first sleeve 9 and the second sleeve 13 are respectively connected to the second through hole 301 and the third through hole 305 on the slider 3, and the slider 3 slides on the first sliding shaft 8 and the second sliding shaft 14 through the first sleeve 9 and the second sleeve 13. The first sleeve 9 and the second sleeve 13 play a role in reducing sliding friction.

[0033] like Fig.16 Combination Figure 1 As shown, the oil seal cover 15 is provided with a second screw hole 151 which is coaxially matched with the first screw hole 215 on the brake oil container 213, and the two are fixed by screws to play a sealing role.

[0034] like Fig.17 Combination Figure 1 As shown, the piston 6 is provided with a second circular groove hole 603, which together with the first circular groove hole 219 of the oil pump body 211 provides a limit and placement function for the return spring 5. The piston 6 is provided with a piston rod 602, which is used to connect the front end sealing baffle 601 and the rear end baffle 604 of the piston, and the piston rod 602 reciprocates in the piston hole 221 of the oil pump body 211. The rear end baffle 604 of the piston 6 provides a contact platform for the upper end 702 of the lever 7.

[0035] The rubber protective sleeve 4 is placed between the first circular groove hole 219 at the rear end of the oil pump body 211 and the second circular groove hole 603 at the rear end of the piston 6, and plays a role in protecting the return spring 5 during the reciprocating motion of the piston rod 602. The oil pump body 211, the piston 6, the return spring 5, and the rubber protective sleeve 4 together constitute an oil pump.

[0036] like Fig.18 Combination Figure 1 As shown, the linkage mechanism is a lever 7, and an axial hole 701 is provided on the lever 7 for cooperating with the pivot hole 214 of the housing 2 (through the pivot) to locate the rotation center so that the lever 7 can swing within a certain range. The upper end 702 of the lever 7 is used to contact the rear end baffle 604 of the piston 6, and the lower end is used to contact the boss 308 of the slider 3.

[0037] The working principle of the integrated cable puller and oil pump device is explained below: the position where the slider 3 is away from the square opening 212 and the return spring 5 is in an uncompressed state is the starting position, which is also the position where the brake operation is not performed (also called the initial state, such as Fig.19The lower end 703 and the upper end 702 of the lever 7 move in opposite directions. When the brake is operated, the second pull rope 10, the first pull rope 11 and the third pull rope 12 pull the slider 3 to move it in the direction close to the square opening 212. At the same time, the boss 308 pushes the lower end 703 of the lever 7 to rotate counterclockwise around the shaft hole 701, and the upper end 702 of the lever 7 rotates counterclockwise. Since a certain distance is left between the upper end 702 of the lever 7 and the rear end baffle of the piston 6 at the initial moment, in order to realize the linkage of the front and rear brakes with a time interval, after the two are in contact, the upper end 702 pushes the rear end baffle 604 of the piston 6 to move forward, so that the piston 6 moves as a whole into the oil pump body 211, and the front end push rod of the piston 6 presses the brake oil in the brake oil container 213 into the brake device through the oil pump body 211 and the oil pump opening 210, and uses the oil pressure to drive the brake clamp to generate a friction torque on the disc to brake; when the slider 3 moves to the end of the stroke, the piston 6 is also pressed into the maximum depth (also called the brake dead state, such as Fig. 20 As shown). After the brake device is released, the return spring 5 resets the auxiliary piston 6, the brake oil returns to the brake oil container 213, and the piston 6 drives the slider 3 to return through the lever 7 (with the help of the second pull rope 10), preparing for the next brake operation. At this time, the lever 7 may be in contact at the upper end, with a certain distance between the lower end and the slider 3, or it may be in contact at the lower end, with a certain distance between the upper end and the rear end baffle of the piston 6, or it may be that the upper and lower ends have a certain distance at the same time. In any case, when the lower end of the lever 7 contacts the slider 3, there will be a certain distance between the upper end of the lever and the rear end of the piston 6 (this distance is equal to the distance between the upper end 702 of the lever 7 and the rear end baffle of the piston 6 at the initial moment).

[0038] The present embodiment also provides a disc-drum brake linkage brake system, a brake handle, a drum brake device, a disc brake device, and an integrated cable puller and oil pump device as described above, wherein the first cable pull cord and the third cable pull cord are connected to the brake handle, the second cable pull cord is connected to the drum brake device to simultaneously control the drum brake device, and the oil pump opening is connected to the disc brake device (when braking, the brake oil in the brake oil container is pressed into the disc brake device through the oil pump opening on the oil pump body through the oil pump body) to enable the first cable pull cord and the third cable pull cord to simultaneously control the drum brake device and the disc brake device to form a front and rear linkage brake system.

[0039] This front-to-rear linkage braking system is a simultaneous braking or interval braking mode for the front and rear wheels, with good braking performance, short braking distance, high safety factor, and braking can guarantee the braking quality to the greatest extent and prevent safety accidents. In particular, this embodiment forms an interval braking mode by setting the gap between the lever and the piston (when the lower end of the lever contacts the slider, there is a gap between the upper end of the lever and the rear end of the piston, so that after the slider contacts the lower end of the lever, the upper end of the lever contacts the rear end of the piston after a certain interval to drive the piston to move), that is, the cable puller first acts on the drum brake and generates a torque on the oil pump brake push rod, and the oil pump then acts on the disc brake. There is a time interval between the drum brake and the disc brake, which can ensure the braking quality and prevent the safety accident of skidding caused by excessive negative acceleration when braking at the same time.

[0040] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A wire puller and oil pump integrated device, characterized in that: It includes an outer shell, a slider, a pull-wire rope, a linkage mechanism, an oil pump, and a brake oil container. The oil pump includes an oil pump body, a piston, and a return spring. The oil pump body is connected to the brake oil container so that the brake oil in the brake oil container can enter the oil pump body. The slider is accommodated in the outer shell, connected to the pull-wire rope and can move laterally under the pull of the pull-wire rope. The linkage mechanism is used to drive the piston to move into the oil pump body during the lateral movement of the slider pulled by the pull-wire rope, and drive the slider back to the initial position when the piston returns. When braking, the pull-wire rope drives the slider to move laterally after being pulled, and then drives the piston to move into the oil pump body through the linkage mechanism, and the front end of the piston rod presses the brake oil in the brake oil container through the oil pump body and the oil pump opening on the oil pump body. After the brake is released, the pull-wire rope is loosened, and the return spring resets the auxiliary piston to return to its position, so that the brake oil returns to the brake oil container, and the piston drives the slider back to its initial position through the linkage mechanism.

2. The integrated wire puller and oil pump device according to claim 1, characterized in that: The shell, the brake oil container and the oil pump body are an integrated structure.

3. The integrated wire puller and oil pump device according to claim 1, characterized in that: The slider is provided with two transversely extending through holes, and two sliding shafts with both ends fixed to the side walls of the shell are provided corresponding to the through holes. The rear wall of the shell is provided with two sliding grooves, and the slider is provided with two support rods corresponding to the sliding grooves. The slider cooperates with the sliding shaft through the through holes, and the support rod cooperates with the slider, so that the slider can only move laterally within a limited stroke.

4. The integrated wire puller and oil pump device according to claim 1, characterized in that: The oil pump body is provided with a piston hole and a first through hole which are arranged front and back and connected. The piston rod of the piston is limited in the first through hole. The front end sealing baffle of the piston is located in the piston hole and can reciprocate. A first circular groove hole is provided on the outer side of the rear end periphery of the piston hole. The piston is correspondingly provided with a second circular groove hole. The first circular groove hole and the second circular groove hole cooperate to limit and place the return spring. A rubber protective sleeve for protecting the return spring is provided between the first circular groove hole and the second circular groove hole.

5. The integrated wire puller and oil pump device according to claim 1, characterized in that: The linkage mechanism is a swingable lever, the upper end of the lever is used to contact the rear end of the piston, and the lower end of the lever is used to contact the slider.

6. The integrated wire puller and oil pump device according to claim 5, characterized in that: The rear end of the piston is provided with a rear end baffle for contacting the upper end of the lever; the lower end of the slider is provided with a boss for contacting the lower end of the lever.

7. The integrated wire puller and oil pump device according to claim 5, characterized in that: The side wall of the shell is provided with a square opening for the lever to swing, and the lower end of the square opening has a step cut to provide a safe distance for the lower end of the lever when the stroke is maximum; pivot holes for locating the rotation position of the lever axis are also provided on both sides of the square opening.

8. The integrated wire puller and oil pump device according to claim 5, characterized in that: When the lower end of the lever contacts the slider, there is a gap between the upper end of the lever and the rear end of the piston.

9. The integrated wire puller and oil pump device according to any one of claims 1 to 8, characterized in that: There are three pull ropes, namely the first pull rope, the second pull rope and the third pull rope, all of which are fixed to the slider and are arranged in parallel at the upper, middle and lower positions respectively; the first pull rope and the third pull rope are used to connect the brake handle, and the second pull rope is used to connect the drum brake device to control the drum brake device at the same time.

10. A disc-drum brake linkage brake system, characterized in that: It includes a brake handle, a drum brake device, a disc brake device, and an integrated cable puller and oil pump device as described in claim 9, wherein the first cable pull cord and the third cable pull cord are connected to the brake handle, the second cable pull cord is connected to the drum brake device to simultaneously control the drum brake device, and the oil pump opening is connected to the disc brake device to enable the first cable pull cord and the third cable pull cord to simultaneously control the drum brake device and the disc brake device.

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