Central pump main valve for motorcycle

Abstract

The utility model discloses a central pump main valve for a motorcycle, which comprises a main pump shell, a piston cavity is arranged in the main pump shell, a piston component is arranged in the piston cavity, an oil return pool is arranged on the main pump shell, a control pin matched with the piston component is in threaded connection with the main pump shell, and the control pin comprises a pin column and a connecting nut. A vertical hole extending into the pin column is formed in the upper end of the connecting nut, a through hole is transversely formed in the pin column, and the vertical hole is communicated with the through hole and the oil return pool. The control pin has the advantages that the control pin is arranged to be of the structure of the pin column and the connecting nut, the oil way channel is formed in the control pin through the vertical hole and the through hole, the control pin is detachably and fixedly connected with the master cylinder shell through the connecting screw rod, and therefore the control pin can be rapidly assembled and maintained under the condition that the brake flow requirement of a master cylinder assembly is met.

Description

TECHNICAL FIELD

[0001] The utility model relates to motorcycle parts technical field, especially a center pump total valve for motorcycle. BACKGROUND

[0002] At present, the center valve structure is mainly used in the total pump of the middle and high grade motorcycle brake system, and the internal structure of the total pump mainly includes a total pump shell, a center valve piston assembly and a control pin, since the control pin in the structure is mostly a standard part, one-time press fitting is needed during assembly, and the control pin cannot be disassembled for subsequent maintenance, resulting in high maintenance cost. UTILITY MODEL CONTENTS

[0003] The utility model discloses a center pump total valve for motorcycle, which solves the problem of disassembly of the control pin of the center pump total valve for subsequent maintenance, and reduces the maintenance cost.

[0004] The utility model discloses a center pump total valve for motorcycle, which solves the problem of disassembly of the control pin of the center pump total valve for subsequent maintenance, and reduces the maintenance cost.

[0005] A center pump total valve for motorcycle, comprising a total pump shell, a piston cavity is arranged in the total pump shell, a piston assembly is arranged in the piston cavity, an oil return pool is arranged on the total pump shell, a control pin matched with the piston assembly is threadedly connected to the total pump shell, the control pin comprises a pin column and a connecting nut, a vertical hole extending into the pin column is arranged at the upper end of the connecting nut, a through hole is horizontally arranged on the pin column, and the vertical hole is communicated with the through hole and the oil return pool.

[0006] Further, a fixing hole matched with the pin column is arranged on the inner wall of the piston cavity of the total pump shell, and a tap slot is arranged at the inner wall of the upper end of the vertical hole.

[0007] Further, the piston assembly comprises a brake piston, and a movable slot matched with the pin column is arranged on the brake piston.

[0008] Further, a large spring with a gradually reduced radial dimension is arranged on one side of the piston cavity relative to the brake piston, a spring seat is connected to the small end of the large spring, a small spring is arranged at the groove bottom of the spring seat, a sealing ring matched with the brake piston is connected to the other end of the small spring, a moving pin is connected to the sealing ring, the brake piston is provided with a movable hole matched with the moving pin, and the movable hole is communicated with the movable slot.

[0009] Further, the spring seat is a cylindrical seat with a U-shaped cross section, an oil passing hole is arranged at the groove bottom of the spring seat, and the large spring is fixedly connected to the outer wall of the spring seat.

[0010] Further, the end of the moving pin is in contact with the pin post, and the sealing ring has a first oil passing gap with the end surface of the brake piston.

[0011] Further, a second oil passing gap is formed in the side wall of the movable hole, and the second oil passing gap is communicated with the spring seat and the movable slot.

[0012] Further, the brake piston is provided with a front leather cup and a rear leather cup matched with the piston cavity, the front leather cup is located in front of the movable slot, and the rear leather cup is located in rear of the movable slot.

[0013] The utility model has the advantages of the following:

[0014] By setting the control pin as the pin post and the connecting nut structure, the oil passage is formed in the vertical hole and the through hole, and the connecting screw is detachably fixedly connected with the total pump shell, so that the brake flow demand of the total pump assembly can be met, and the total pump assembly can be quickly assembled and maintained. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a structural schematic view of the utility model.

[0016] Figure 2 It is a partial sectional view of the utility model from another perspective.

[0017] Figure 3 It is a structural schematic view of the control pin.

[0018] Figure 4 It is Figure 3 It is a sectional view of A-A surface.

[0019] In the figure, 1 is a total pump shell, 2 is a piston cavity, 3 is an oil return pool, 4 is a control pin, 5 is a pin post, 6 is a connecting nut, 7 is a vertical hole, 8 is a through hole, 9 is a fixing hole, 10 is a screw slot, 11 is a brake piston, 12 is a movable slot, 13 is a large spring, 14 is a spring seat, 15 is a small spring, 16 is a sealing ring, 17 is a moving pin, 18 is an oil passing hole, 19 is a first oil passing gap, 20 is a second oil passing gap, 21 is a front leather cup, and 22 is a rear leather cup. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be described clearly and completely in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. The components of the embodiments of the utility model described and shown in the drawings can be arranged and designed in various different configurations.

[0021] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed application, but merely represents the preferred application of the application. Based on the embodiments of the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the present application.

[0022] It should be noted that the embodiments and features in the embodiments of the present application can be combined with each other without conflict.

[0023] It should be noted that: similar reference numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0024] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship commonly used when the product of the present application is used, or the orientation or positional relationship commonly understood by those skilled in the art, 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 indicated device or element 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", "second" and the like are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0025] In the description of the present application, it should also be noted that unless otherwise explicitly specified and limited, the terms "provided", "mounted", "connected", "connected" should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be connected inside two elements. For those of ordinary skill in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0026] Reference Figures 1-4 As shown in the drawings, one embodiment of the present application is:

[0027] A center pump total valve for a motorcycle comprises a total pump housing 1, a piston cavity 2 is arranged in the total pump housing 1, a piston assembly is arranged in the piston cavity 2, an oil return pool 3 is arranged on the total pump housing 1, a control pin 4 adapted to the piston assembly is threadedly connected to the total pump housing 1, the control pin comprises a pin column 5 and a connecting nut 6, an upright hole 7 extending into the pin column 5 is arranged on the upper end of the connecting nut 6, a through hole 8 is transversely arranged on the pin column 5, and the upright hole 7 is communicated with the through hole 8 and the oil return pool 3.

[0028] During the use of the device, the pin column 5 is frequently subjected to force, so that the stability of the pin column is improved by arranging a fixing hole 9 adapted to the pin column 5 on the inner wall of the piston cavity 2 of the total pump housing 1.

[0029] The control pin 4 is arranged in the structure of the pin column 5 and the connecting nut 6, an oil passage is formed in the control pin 4 through the upright hole 7 and the through hole 8, and the connecting nut 6 is detachably fixedly connected to the total pump housing, so that the control pin meets the braking flow demand of the total pump assembly.

[0030] In the embodiment, the piston assembly comprises a brake piston 11, and an active groove 12 adapted to the pin column 5 is arranged on the brake piston 11.

[0031] A large spring 13 gradually reducing in radial dimension is arranged on the side of the piston cavity 2 relative to the brake piston 11, a spring seat 14 is connected to the small end of the large spring 13, a small spring 15 is arranged on the groove bottom of the spring seat 14, a sealing ring 16 adapted to the brake piston 11 is connected to the other end of the small spring 15, a moving pin 17 is connected to the sealing ring 16, the brake piston 11 is provided with an active hole adapted to the moving pin 17, and the active hole is communicated with the active groove 12.

[0032] The spring seat 14 is a cylindrical seat with a U-shaped cross section, an oil passing hole 18 is arranged on the groove bottom of the spring seat 14, and the large spring 13 is fixedly connected to the outer wall of the spring seat 14.

[0033] When the end of the moving pin 17 is in contact with the pin column 5, the sealing ring 16 has a first oil passing gap 19 with the end face of the brake piston 11.

[0034] A second oil passing gap 20 is arranged on the side wall of the active hole, and the second oil passing gap 20 is communicated with the spring seat 14 and the active groove 12.

[0035] The brake piston 11 is provided with a front leather cup 21 and a rear leather cup 22 matched with the piston cavity 2, the front leather cup 21 is located in front of the movable groove 12, and the rear leather cup 22 is located behind the movable groove 12.

[0036] When the system is not working, the end of the moving pin 17 is in contact with the pin column 5, that is, the moving pin 17 is supported by the pin column 5, the small spring is in a strong compression state, and the sealing ring 16 is separated from the end face of the brake piston 11 to form a first oil passing gap.

[0037] When braking, that is, when the brake system is pressurized, the brake piston 11 moves forward to drive the front leather cup 21 to move forward at the same time, the moving pin 17 is separated from the pin column 5, the sealing ring 16 is in contact with the end face of the brake piston 11 under the influence of the elastic force of the small spring 15 and the hydraulic counterforce in the system, at this time, the first oil passing gap 19 disappears, a sealing state is formed, and pressure is formed in the system.

[0038] When the brake is released, that is, when the brake system is back to oil pressure relief, the brake piston 11 moves backward, the end of the moving pin 17 is in contact with the pin column 5 again, the sealing ring 16 is separated from the end face of the brake piston 11 to form the first oil passing gap 19 again, the system is in a non-sealing state, and pressure relief is achieved.

[0039] Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or make equivalent replacement to part of the technical features, and any modification, equivalent replacement, improvement, etc. within the spirit and principles of the utility model should be included in the protection scope of the utility model.

Claims

1. A central pump master valve for a motorcycle, characterized by: The total pump housing is provided with a piston cavity, a piston assembly is arranged in the piston cavity, an oil return pool is arranged on the total pump housing, a control pin matched with the piston assembly is threadedly connected to the total pump housing, the control pin comprises a pin column and a connecting nut, an upright hole extending into the pin column is arranged at the upper end of the connecting nut, a through hole is transversely arranged on the pin column, and the upright hole is communicated with the through hole and the oil return pool.

2. A central pump master cylinder according to claim 1, characterized in that: A fixing hole matched with the pin column is arranged on the inner wall of the piston cavity of the total pump housing, and a screw slot is arranged on the inner wall of the upper end of the upright hole.

3. A central pump master cylinder according to claim 1, characterized in that: The piston assembly comprises a brake piston, and a movable slot matched with the pin column is arranged on the brake piston.

4. A central pump master cylinder according to claim 3, characterized in that: A large spring with gradually reduced radial dimension is arranged on one side of the piston cavity relative to the brake piston, a spring seat is connected to the small end of the large spring, a small spring is arranged on the groove bottom of the spring seat, a sealing ring matched with the brake piston is connected to the other end of the small spring, a moving pin is connected to the sealing ring, a movable hole matched with the moving pin is arranged on the brake piston, and the movable hole is communicated with the movable slot.

5. A central pump master cylinder according to claim 4, characterized in that: The spring seat is a cylindrical seat with U-shaped cross section, an oil passing hole is arranged on the groove bottom of the spring seat, and the large spring is fixedly connected to the outer wall of the spring seat.

6. A central pump master cylinder according to claim 4, characterized in that: When the end of the moving pin is in contact with the pin column, the sealing ring has a first oil passing gap with the end surface of the brake piston.

7. A central pump master cylinder according to claim 4, characterized in that: A second oil passing gap is arranged on the side wall of the movable hole, and the second oil passing gap is communicated with the spring seat and the movable slot.

8. A central pump master cylinder according to claim 3, characterized in that: Front and rear leather bowls matched with the piston cavity are arranged on the brake piston, the front leather bowl is located in front of the movable slot, and the rear leather bowl is located behind the movable slot.

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