Split type oil brake upper pump and oil pressure disc brake

Abstract

The present application relates to a kind of split oil brake upper pump and oil pressure disc brake brake.Wherein, split oil brake upper pump includes detachable fixed handle seat on handlebar tube, the handle seat is equipped with: oil cylinder piece, with the oil cavity of oil liquid, one end of the oil cylinder piece is fixed on the handle seat;Brake handle, movably mounted on the handle seat, the brake handle drives the oil liquid built-in oil cavity activity when activity;Wherein, the outside of the oil cylinder piece is fixed with by two half pieces combined to form the outer attached oil pool piece, and the outer attached oil pool piece has an oil pool cavity, the oil pool cavity is connected with the oil cavity to adjust oil pressure.The split oil brake upper pump of the present application is separately processed, the forming difficulty is reduced, the process is simplified, and the yield is high, and it is convenient to assemble, reduces the production cost of manufacturer, and it is also convenient to replace the site of wear or damage, saves user use and maintenance cost.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of brake technology, in particular to a split type oil brake upper pump and an oil pressure disc brake. BACKGROUND

[0002] The oil pressure disc brake generally comprises an oil brake upper pump, an oil pipe and a brake lower pump, the oil brake upper pump is installed on a handlebar pipe of a bicycle / electric bicycle, the brake lower pump is installed at a disc corresponding to front and rear wheels of a frame, and the oil brake upper pump and the brake lower pump are communicated through the oil pipe.

[0003] The oil brake upper pump of the existing structure mainly comprises a handle seat, a brake handle, an oil cylinder and an oil pool, wherein the handle seat, the oil cylinder and the oil pool are generally integrally cast, and problems of great machining difficulty, high production cost and the like exist, meanwhile, the integrally formed structure cannot be repaired secondarily, and the oil brake upper pump is scrapped as a whole due to damage of a certain part, and resource waste is serious.

[0004] Therefore, the application provides a split type oil brake upper pump and an oil pressure disc brake. SUMMARY

[0005] The embodiment of the application provides a split type oil brake upper pump and an oil pressure disc brake, so as to at least solve the problems of great machining difficulty, high production cost and the like of the integrally cast structure of the handle seat, the oil cylinder and the oil pool in the oil brake upper pump structure of the prior art, and the oil brake upper pump cannot be repaired secondarily, the oil brake upper pump is scrapped as a whole due to damage of a certain part, and resource waste is serious.

[0006] In a first aspect, the application provides a split type oil brake upper pump, which comprises a handle seat detachably fixed on a handlebar pipe of a bicycle / electric bicycle, and the handle seat is provided with:

[0007] An oil cylinder piece having an oil cavity for containing oil, one end of the oil cylinder piece is fixed on the handle seat, and the other end is provided with an oil pipe interface communicating with the oil cavity, and the oil pipe interface is used for connecting an oil pipe;

[0008] A brake handle movably installed on the handle seat, and the brake handle drives oil in the oil cavity to move when the brake handle moves;

[0009] The outer side of the oil cylinder piece is fixed with an outer attached oil pool piece formed by two half pieces, and the outer attached oil pool piece has an oil pool cavity, and the oil pool cavity is connected with the oil cavity in a penetrating mode to adjust oil pressure.

[0010] Optionally, the outer attached oil pool piece comprises an oil pool half piece and a bundle half piece;

[0011] The oil pool cavity is arranged in the oil pool half piece, and the inner side edge of the oil pool half piece is integrally formed with two symmetrically arranged convex edge portions:

[0012] The inner side edge of the bundle half part is integrally formed with two symmetrical buckle groove parts, which are inserted and matched with the convex edge part to assemble the oil pool half part and the bundle half part into one and set on the oil cylinder part.

[0013] Further, optionally, the convex edge part is provided with at least one first positioning groove on one side thereof towards the buckle groove part; and the buckle groove part is provided with at least one first positioning protrusion matched with the first positioning groove for clamping positioning.

[0014] Further, optionally, the inner side wall of the oil pool half part is provided with at least one second positioning protrusion matched with a second positioning groove opened on the side wall of the oil cylinder part for clamping positioning after assembly.

[0015] Further, optionally, the inner side of the bundle half part is provided with a locking structure for locking the externally-attached oil pool part on the oil cylinder part, and the locking structure comprises:

[0016] a beveled slot opened on the inner side of the bundle half part and away from one end of the handle base;

[0017] a wedge inserted into the beveled slot and applying pressure to tightly abut and fix the inner side of the externally-attached oil pool part with the outer side wall of the oil cylinder part;

[0018] a resilient cylindrical pin vertically inserted into the middle position of the bundle half part corresponding to the beveled slot and the wedge to limit the wedge.

[0019] Optionally, the oil cylinder part comprises:

[0020] a cylinder body being a hollow cylindrical structure with one end being opened, and an oil chamber being located in the hollow cylindrical structure, the cylinder body being inserted into a cylinder body fixing hole opened on the handle base and being locked and fixed by a screw;

[0021] a piston inserted and fixed at the opening position of the cylinder body, and an inner end of the piston extending into the oil chamber;

[0022] a piston push rod provided with one end on the inner side of the brake handle and the other end abutting against the outer end face of the piston, and the piston push rod being pressed to move the piston to squeeze the oil into the oil pipe when the brake handle is moved;

[0023] a first communication hole opened on the side wall of the cylinder body and communicating with the externally-attached oil pool part.

[0024] Further, optionally, the opening side of the cylinder body is integrally formed with a step part, and the outer diameter of the step part is larger than the inner diameter of the cylinder body fixing hole to limit the installation position of the cylinder body.

[0025] Further, optionally, an oil filling port is opened on one side of the oil pool chamber, and an oil pool screw cover is provided on the oil filling port, and the oil pool screw cover is provided with a breathing pad on one side corresponding to the oil pool chamber for expanding and contracting with the change of oil pressure.

[0026] Further, optionally, a second oil pool interface communicating with the oil pool cavity is arranged on the oil pool half member at a position corresponding to the first communication hole, and a sealing gasket for preventing oil leakage is arranged between the first communication hole and the second oil pool interface.

[0027] Optionally, the electric bicycle further comprises a power-off switch, which is installed on the handle seat and has a switch part abutting against the movable end of the brake handle to complete the power-off action of the electric bicycle motor when the brake handle is moved.

[0028] In a second aspect, the application provides an oil pressure disc brake with the split oil brake upper pump of the first aspect.

[0029] The application mainly has the following advantages:

[0030] The external oil pool member and the oil cylinder member are of a split structure, the external oil pool member is formed by two half members, the split oil brake upper pump has a low forming difficulty after the parts are disassembled and processed, the process is simplified, the yield is high, the assembly is convenient, and the production cost of the manufacturer is reduced; the split oil brake upper pump has a compact structure and a good fixing effect after assembly, the oil passage between the external oil pool member and the oil cylinder member is unblocked and has no leakage, the split structure is also convenient for replacing the damaged or worn parts, and the use and maintenance costs of the user can be effectively saved. BRIEF DESCRIPTION OF DRAWINGS

[0031] In order to more clearly illustrate the specific embodiments of the application or the technical solutions in the prior art, the following will briefly introduce the drawings needed to be used in the specific embodiments or the prior art description. Obviously, the drawings in the following description are some embodiments of the application, and those skilled in the art can also obtain other drawings according to these drawings without creative labor.

[0032] Figure 1 The split oil brake upper pump is shown in the perspective view of one embodiment of the application Figure 1 .

[0033] Figure 2 The split oil brake upper pump is shown in the exploded view of one embodiment of the application

[0034] Figure 3 The split oil brake upper pump is shown in the perspective view of one embodiment of the application Figure 2 .

[0035] Figure 4 The split oil brake upper pump is shown in the front view of one embodiment of the application

[0036] Figure 5 The split oil brake upper pump is shown in the side view of one embodiment of the application

[0037] Figure 6 For the invention Figure 5 The structural profile of C-C in the present application.

[0038] Explanation of reference signs: handle seat 10, lock 101, cylinder fixing hole 102, brake handle rotating frame 103;

[0039] Brake handle 20;

[0040] Oil cylinder part 30, cylinder 300, piston 301, step part 302, first communication hole 303, oil pipe interface 304;

[0041] External oil pool part 40, oil pool half part 401, bundle half part 402, convex edge part 403, buckle groove part 404, first positioning groove 405, first positioning convex 406, oil pool screw cap 407, bevel groove 408, wedge 409, elastic cylindrical pin 410, second positioning convex 411, second positioning groove 412, second oil pool interface 413, sealing gasket 414, breathing gasket 415;

[0042] Power-off switch part 50. DETAILED DESCRIPTION

[0043] The technical solutions of the present application will be described clearly and completely below in combination with the drawings. 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 skilled in the art without creative labor fall within the scope of protection of the present application.

[0044] In the description of the present application, it should be noted that the orientations or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first" and "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0045] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0046] The oil brake upper pump is usually installed on the handlebar tube of the bicycle / electric bicycle, the brake lower pump is installed at the disc of the front wheel or rear wheel of the bicycle frame, and the oil brake upper pump and the brake lower pump are communicated through the oil pipe. The oil brake upper pump of the existing structure mainly comprises a handle seat, a brake handle, an oil cylinder and an oil pool, wherein the handle seat, the oil cylinder and the oil pool are generally integrally formed by casting, which has the problems of high processing difficulty and high production cost, and the integrally formed structure cannot be repaired again, so that the oil brake upper pump will be scrapped as a whole when a part is damaged, resulting in serious waste of resources. Therefore, a split type oil brake upper pump and an oil brake disc brake are provided.

[0047] Embodiment 1

[0048] The present application provides a split type oil brake upper pump, Figure 1 The split type oil brake upper pump shown in one of the embodiments of the present application Figure 1 . Figure 2 The split type oil brake upper pump shown in one of the embodiments of the present application Figure 3 The split type oil brake upper pump shown in one of the embodiments of the present application Figure 2 . Refer to the attached Figures 1-3 The split type oil brake upper pump comprises a handle seat 10 which is detachably fixed to the handlebar tube of the bicycle / electric bicycle, and the handle seat 10 is provided with:

[0049] An oil cylinder 30 having an oil cavity for containing oil, one end of the oil cylinder 30 is fixed to the handle seat 10, and the other end is provided with an oil pipe interface 304 communicating with the oil cavity, the oil pipe interface 304 is used for connecting the oil pipe, and the other end of the oil pipe is connected to the brake lower pump;

[0050] A brake handle 20 which is rotatably installed on the handle seat 10 through a first rotating shaft, the brake handle 20 rotates along the first rotating shaft when the user pinches it, and drives the oil in the oil cavity to move;

[0051] Among them, the outer side of the oil cylinder 30 is fixed with an outer attached oil pool part 40 which is formed by combining two half parts, and the outer attached oil pool part 40 has an oil pool cavity which is connected with the oil cavity to adjust the oil pressure.

[0052] In the technical scheme of the above embodiment, the outer attached oil pool part 40 and the oil cylinder 30 are of split type structure, and the outer attached oil pool part 40 is formed by combining two half parts, which is convenient to assemble, effectively solves the problem of difficult processing and forming of the traditional integrally formed oil brake upper pump, and the split type oil brake upper pump proposed in the present application has compact structure and good fixing effect after assembly, the oil passage between the outer attached oil pool part 40 and the oil cylinder 30 is communicated and has no leakage, and it is also convenient to replace the worn or damaged parts without the need for overall replacement, thereby saving maintenance and repair costs.

[0053] In one embodiment, Figure 2 The exploded view of the split oil brake upper pump structure is shown in one embodiment of the present application. Figure 5 The side view of the split oil brake upper pump is shown in one embodiment of the present application.

[0054] Figure 6 The structure profile of C-C in the present application Figure 5 The structure profile of C-C in the present application Figure 2 、 5 The outer oil tank part 40 includes an oil tank half part 401 and a bundle half part 402, as shown in FIGS. 6 and 6.

[0055] The oil tank cavity is arranged in the oil tank half part 401, and at least one second positioning protrusion 411 of the oil tank half part 401 is arranged on the inner side wall of the oil tank half part 401 to be clamped with a second positioning groove 412 arranged on the side wall of the oil cylinder part 30, and two symmetrically arranged convex edge parts 403 are integrally formed on the inner side edge of the oil tank half part 401.

[0056] The inner side edge of the bundle half part 402 is integrally formed with two symmetrically arranged buckle groove parts 404, the buckle groove parts 404 are inserted and matched with the convex edge parts 403 to assemble the oil tank half part 401 and the bundle half part 402 into one and are arranged on the oil cylinder part 30, at least one first positioning groove 405 is arranged on one side of the convex edge part 403 facing the buckle groove part 404, and at least one first positioning protrusion 406 is arranged in the buckle groove part 404 to be clamped and positioned with the first positioning groove 405.

[0057] Further, the outer oil tank part 40, at least the oil tank half part 401 is made of transparent plastic material, so that the storage of oil and the pollution condition of oil can be observed in real time.

[0058] In the technical solution of the above embodiment, the oil tank half part 401 is close to one side of the oil cylinder part 30, the two second positioning protrusions 411 on the side of the oil tank half part 401 are clamped into the second positioning groove 412 of the oil cylinder part 30, the positioning of the oil tank half part 401 and the oil cylinder part 30 is realized, then the bundle half part 402 is assembled on the other side of the oil cylinder part 30, during the assembly, the buckle groove part 404 on the side away from the brake handle 20 is slid and matched to be inserted into the convex edge part 40 until the assembly is in place, at this time, the first positioning protrusion 406 is inserted into the first positioning groove 405, and the split fixing assembly of the oil tank half part 401 and the bundle half part 402 and the oil cylinder part 30 is realized.

[0059] In one embodiment, Figure 2 The exploded view of the split oil brake upper pump structure is shown in one embodiment of the present application. Figure 5 The side view of the split oil brake upper pump is shown in one embodiment of the present application.

[0060] Figure 6 For the present invention Figure 5 The structural profile of C-C in the present invention. Refer to the attached Figure 2 、 5 And 6, the inner side of the beam half part 402 is provided with a locking structure for locking the attached oil pool part 40 on the oil cylinder part 30, and the locking structure comprises:

[0061] The beveled slot 408 is opened in the inner side of the beam half part 402 and away from one end of the handle base 10;

[0062] The wedge 409 is inserted into the beveled slot 408 and applies pressure to tightly abut and fix the inner side of the attached oil pool part 40 with the outer side wall of the oil cylinder part 30;

[0063] The elastic cylindrical pin 410 is vertically inserted into the middle position of the corresponding beveled slot 408 and wedge 409 of the beam half part 402 to limit the wedge 409;

[0064] After the assembly process of the above step is completed, the wedge 409 is inserted into the beveled slot 408 and pressed so that the inner side of the attached oil pool part 40 is tightly abutted with the outer side wall of the oil cylinder part 30. Specifically, the second positioning protrusion 411 is locked in the second positioning slot 412, the first positioning protrusion 406 is locked in the first positioning slot 405, and the convex edge part 403 is locked in the buckle slot part 404, thereby effectively realizing the locking of the attached oil pool part 40 on the oil cylinder part 30. Then, the elastic cylindrical pin 410 is inserted to limit the wedge 409 from slipping off. It can be understood that the use of the elastic cylindrical pin 410 can effectively utilize its own elasticity to fix it in the corresponding pin hole and prevent it from falling off.

[0065] In one embodiment, Figure 2 The exploded view of the split oil brake upper pump structure shown in one embodiment of the present invention. Figure 4 The front view of the split oil brake upper pump shown in one embodiment of the present invention. Refer to the attached Figure 2 And 4 The oil cylinder part 30 comprises:

[0066] The cylinder body 300 is a hollow cylindrical structure with one end open, and the oil cavity is located in the hollow cylindrical structure. The cylinder body 300 is inserted into the cylinder body fixing hole 102 opened in the handle base 10 and locked and fixed by screws;

[0067] The piston 301 is inserted and fixed at the open position of the cylinder body 300, and the inner end of the piston 301 extends into the oil cavity;

[0068] The piston push rod (not shown in the figure) is arranged at one end of the inner side of the brake handle 20, and the other end abuts the outer end face of the piston 301. When the brake handle 20 moves, the piston 301 is pressed to move to extrude the oil into the oil pipe;

[0069] The first communication hole 303 is arranged on the side wall of the cylinder body 300 and communicates with the external oil pool member 40. The second oil pool interface 413, which communicates with the oil pool cavity, is arranged on the oil pool half member 401 corresponding to the position of the first communication hole 303. The sealing gasket 414 is arranged between the first communication hole 303 and the second oil pool interface 413 to prevent oil leakage.

[0070] In the technical scheme of the above embodiment, the piston 301 is assembled into the cylinder body 300, the piston push rod is assembled with the brake handle 20, then the hollow cylindrical structure of the cylinder body 300 is inserted into the cylinder body fixing hole 102 arranged on the handle seat 10 and locked and fixed by a screw, thereby realizing the fixation between the cylinder body 300 and the handle seat 10. After the brake handle 20 is assembled, the piston push rod abuts against the piston 301. When the brake handle 20 is operated by a user to brake, the piston push rod drives the piston 301 to move to extrude the oil into the oil pipe, so as to reach the brake lower pump to brake the bicycle / electric bicycle.

[0071] In one of the embodiments, refer to the accompanying drawings Figure 2 The opening side of the cylinder body 300 is integrally formed with the step portion 302, and the outer diameter of the step portion 302 is greater than the inner diameter of the cylinder body fixing hole 102 to limit the installation position of the cylinder body 300. By cooperating the step portion 302 with the outer end surface of the cylinder body fixing hole 102, the installation position of the cylinder body 300 can be limited after the cylinder body 300 is inserted into the cylinder body fixing hole 102, thereby ensuring the standardized installation.

[0072] In one of the embodiments, refer to the accompanying drawings Figure 6 The oil pool cavity is provided with the oil injection port on one side, and the oil pool screw cover 407 is arranged on the oil injection port. Before the oil pool screw cover 407 is assembled, the oil injection port can be used to inject the oil for braking into the oil pool cavity. The oil pool screw cover 407 is installed on one side of the oil pool cavity and is provided with the breathing gasket 415 which expands and shrinks in cooperation with the change of the oil pressure.

[0073] Embodiment 2

[0074] The difference between the embodiment and the embodiment 1 is that, as shown in the accompanying drawings, the embodiment further comprises the power-off switch member 50 which is installed on the handle seat 10 and is provided with the switch portion which abuts against the movable end of the brake handle 20 to complete the power-off action on the electric bicycle motor when the brake handle 20 is moved. Figures 1-3

[0075] ​In the technical solution of the above embodiment, when the split oil brake upper pump of the application is used in an electric bicycle, in order to ensure that the motor is powered off in coordination with braking, a power-off switch 50 is installed, a switch part of the power-off switch 50 abuts against a movable end of a brake handle 20, when a user pinches the brake handle 20 to brake, the movable end of the brake handle 20 is away from the abutting switch part, the switch part is a toggle button with a pass-through end and a disconnected end and a built-in spring, at this time, under the elastic force of the built-in spring, the switch part jumps from the pass-through end to the disconnected end, and the electric bicycle motor is powered off.

[0076] Other structures not described refer to embodiment 1.

[0077] The application also provides an oil pressure disc brake, which has the split oil brake upper pump of the first aspect and further comprises a brake lower pump, the split oil brake upper pump is connected with the brake lower pump through an oil pipe, so that when the brake handle 20 is pinched, the oil liquid is driven to enter the brake lower pump through the oil pipe, and the brake lower pump clamps and brakes the disc.

[0078] The above-mentioned embodiments are only preferred embodiments of the application, and cannot be used to limit the protection scope of the application, and any non-essential changes and replacements made by those skilled in the art on the basis of the application all belong to the protection scope of the application.

Claims

1. A split type oil brake upper pump, comprising a handle seat detachably fixed to the handlebar tube, characterized in that: The handle seat is provided with: An oil cylinder having an oil cavity for containing oil, one end of the oil cylinder being fixed to the handle seat, and the other end being provided with an oil pipe interface communicating with the oil cavity, the oil pipe interface being used to connect an oil pipe; A brake handle is movably mounted on the handle base, and when the brake handle moves, it drives the oil in the oil chamber to move; The outer side of the oil cylinder is fixed with an external oil pool formed by combining two half-side parts, and the external oil pool has an oil pool cavity, which is connected to the oil chamber to adjust the oil pressure; the external oil pool includes an oil pool half part and a bundle half part; The oil pool cavity is arranged in the oil pool half piece, and the inner edge of the oil pool half piece is integrally formed with two symmetrically arranged convex edges; The inner edge of the half-side piece of the oil sump is integrally formed with two symmetrically arranged buckle grooves, and the buckle grooves are plugged into and matched with the convex edge to assemble the oil pool half-side piece and the half-side piece of the oil sump into one piece and sleeved on the oil cylinder piece; It also includes a power-off switch component, which is installed on the handle base and has a switch portion that abuts against the movable end of the brake handle to complete the power-off action when the brake handle moves.

2. The split-type oil brake upper pump according to claim 1, characterized in that: At least one first positioning groove is provided on one side of the flange portion facing the buckle groove portion; At least one first positioning protrusion is provided in the buckle groove portion and is engaged with the first positioning groove for positioning.

3. The split-type oil brake upper pump according to claim 1, characterized in that: The inner side wall of the oil pool half piece is provided with at least one second positioning protrusion which is engaged with the second positioning groove provided on the side wall of the oil cylinder piece after assembly.

4. The split-type oil brake upper pump according to claim 1, characterized in that: The inner side of the half-side piece of the bundle is provided with a locking structure for locking the external oil pool piece to the oil cylinder piece, and the locking structure includes: An oblique groove is provided on the inner side of the half-side piece of the bundle and at one end away from the handle seat; An inclined wedge is inserted into the inclined groove and applies pressure to tightly abut and fix the inner side of the external oil pool component with the outer side wall of the oil cylinder component; The elastic cylindrical pin is vertically inserted into the middle position of the corresponding oblique groove and the oblique wedge of the half-side piece of the bundle to limit the oblique wedge.

5. The split-type oil brake upper pump according to claim 1, characterized in that: The oil cylinder comprises: The cylinder body is a hollow cylindrical structure with one end open, the oil chamber is located in the hollow cylindrical structure, and the cylinder body is inserted into the cylinder body fixing hole opened on the handle base and fixed by screws; A piston, which is inserted and fixed at the opening position of the cylinder body, and the inner end of the piston extends into the oil chamber; A piston push rod, one end of which is arranged on the inner side of the brake handle and the other end of which abuts against the outer end surface of the piston, and when the brake handle moves, presses the piston to move and squeeze the oil into the oil pipe; The first communicating hole is formed on the side wall of the cylinder body and is connected to the external oil pool.

6. The split-type oil brake upper pump according to claim 5, characterized in that: A step portion is integrally formed on the opening side of the cylinder body, and the outer diameter of the step portion is larger than the inner diameter of the cylinder body fixing hole to limit the installation position of the cylinder body.

7. The split-type oil brake upper pump according to claim 1, characterized in that: An oil filling port is provided on one side of the oil pool cavity, and an oil pool screw cover is provided on the oil filling port. A breathing pad for expanding and contracting in accordance with oil pressure changes is installed on the side of the oil pool screw cover corresponding to the oil pool cavity.

8. A hydraulic disc brake, characterized in that: The utility model has a split-type oil brake upper pump as described in any one of claims 1 to 7.

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