Wire harness guide structure of motorcycle cbs linkage brake system and motorcycle

Abstract

The utility model discloses a kind of wire harness guide structure and motorcycle of motorcycle CBS linkage brake system, wherein the wire harness guide structure includes wire harness guide pipe fixedly connected on frame and pedal brake connecting rod rotatably installed on frame, brake pull wire is arranged in wire harness guide pipe, one end of brake pull wire is used to connect with front brake pump, the other end is connected on pedal brake connecting rod and passes out on wire harness guide pipe outlet end, further include guide wheel support fixedly connected on frame, guide wheel support rotatably installs guide wheel, guide wheel is located at the lateral of wire harness guide pipe outlet end, brake pull wire is extended to the outer circumferential surface of guide wheel after passing out from wire harness guide pipe outlet end, and is connected on pedal brake connecting rod after changing extension direction by guide wheel, on the projection plane perpendicular to wire harness guide pipe outlet end center line direction, the cross-sectional projection of brake pull wire at wire harness guide pipe outlet end, located inside the projection of pipe orifice of wire harness guide pipe outlet end.

Description

Technical Field

[0001] This utility model relates to the field of motorcycle braking technology, specifically to a wiring harness guide structure for a motorcycle CBS linked braking system and a motorcycle. Background Technology

[0002] With the increasing popularity of motorcycles, the braking safety and ease of operation of these vehicles are receiving more and more attention. To improve riding safety and handling experience, many motorcycles on the market now widely adopt CBS (Combined Braking System) technology. The basic principle of this system is to link the front and rear brakes through mechanical or hydraulic means, so that when the rider operates the rear brake, the front brake is also engaged simultaneously, improving braking efficiency, reducing operational difficulty, and avoiding safety hazards caused by improper operation of the brakes alone.

[0003] In existing motorcycle CBS (Combined Braking System) systems, the rear brake pedal is typically connected to the front brake hydraulic pump via a single brake cable. When the rider depresses the rear brake pedal, the pedal linkage swings around its axis, actuating the brake cable and causing the front brake pump to operate synchronously, thus linking the front and rear brakes. However, in the traditional design, the brake cable extends directly from the outlet of the wiring harness conduit fixed to the frame and connects directly to the rear brake pedal linkage. When the pedal linkage swings, its position relative to the outlet of the wiring harness conduit changes, resulting not only in axial displacement (effective braking stroke) in the pulling direction but also significant radial oscillation. This lateral oscillation causes the brake cable to continuously rub against the metal end of the conduit outlet. Over long-term use, this rubbing accelerates wear on the brake cable, leading to wire breakage, shortening the cable's lifespan, increasing vehicle maintenance costs, and, more importantly, potentially jeopardizing riding safety. Utility Model Content

[0004] In view of the shortcomings of the prior art, the technical problem to be solved by this utility model is: how to provide a wiring harness guide structure for a motorcycle CBS linkage braking system that can eliminate radial sway of the brake cable, avoid wear with the outlet end of the guide tube, and improve the service life and braking safety of the brake cable.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: A wiring harness guide structure for a motorcycle CBS (Combined Braking System) includes a wiring harness conduit fixedly connected to the frame and a pedal brake linkage rotatably mounted on the frame. A brake cable is threaded through the wiring harness conduit, with one end connected to the front brake pump and the other end extending out of the wiring harness conduit and connected to the pedal brake linkage. The system also includes a guide wheel bracket fixedly connected to the frame, on which a guide wheel is rotatably mounted. The guide wheel is located laterally to the outlet end of the wiring harness conduit. The brake cable extends from the outlet end of the wiring harness conduit to the outer circumferential surface of the guide wheel, then bypasses the guide wheel, changes its direction of extension, and connects to the pedal brake linkage. On a projection plane perpendicular to the centerline of the outlet end of the wiring harness conduit, the cross-sectional projection of the brake cable at the outlet end of the wiring harness conduit is located inside the projection of the conduit's opening at the outlet end.

[0006] In this invention, the guide wheel constrains the brake cable, ensuring that the cross-sectional projection at the critical wear point is always within the projection of the tube opening. This restricts the radial sway of the brake cable at this position, limiting its movement almost entirely to inward and outward motion along its extension direction. Throughout the entire braking stroke of the pedal brake linkage, the segment of the brake cable between the outlet end of the wiring harness conduit and the guide wheel maintains purely axial movement, completely eliminating scraping of the brake cable at the outlet end of the wiring harness conduit. This prevents reduced service life due to wear, lowers maintenance costs, and improves safety during use.

[0007] As an optimization, the extension direction of the brake cable segment between the outlet end of the wiring harness conduit and the guide wheel is parallel to the centerline of the outlet end of the wiring harness conduit. This further improves the stability of the brake cable along its entire path from the conduit opening to the guide wheel, preventing tilting or deviation.

[0008] As an optimization, an annular guide groove is provided on the outer circumferential surface of the guide wheel, and the brake cable is housed within the annular guide groove. This effectively prevents the brake cable from deviating from the wheel surface or slipping laterally during operation, ensuring that the guide wheel can always accurately guide the brake cable and guaranteeing the working stability and reliability of the brake cable.

[0009] As an optimization, the cross-section of the annular guide groove is U-shaped. This effectively prevents excessive swaying of the brake cable during operation.

[0010] As an optimization, the guide wheel is rotatably mounted on an axle via a bearing. One end of the axle, located in the axial direction of the guide wheel, protrudes to form a limiting block, while the other end is threaded onto the guide wheel bracket. The limiting block and the guide wheel bracket together constrain the axial movement of the guide wheel, ensuring the flexibility and smoothness of the guide wheel's rotation.

[0011] As an optimization, a connecting handle is rotatably mounted on the pedal brake linkage. The connecting handle swings around its swing axis, which is parallel to the rotation center line of the guide wheel. This optimizes the force transmission angle of the brake cable at the connection point, making the braking process smoother.

[0012] A motorcycle includes a wiring harness guide structure for a motorcycle CBS linked braking system as described above.

[0013] Compared with existing technologies, this utility model, by introducing a guide wheel and ensuring the position of the brake cable at the tube opening, effectively transforms the complex motion that originally had both axial and radial oscillation into a state of axial movement and radial restriction, avoiding scratching between the brake cable and the tube opening, reducing wear, and extending the service life of the brake cable; moreover, it improves the reliability of the CBS linkage braking system during long-term operation and enhances the safety of the vehicle's braking. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention from observation angle I; Figure 2 This is a three-dimensional structural schematic diagram of the present invention from observation angle II. Detailed Implementation

[0015] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0016] It should be noted that similar reference numerals and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the figures, or the orientation or positional relationship commonly used when the product is in use. They are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance. In addition, the terms "horizontal," "vertical," etc., do not indicate that the component is required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted. In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0017] like Figure 1 and Figure 2 As shown, the wiring harness guide structure of the motorcycle CBS linked braking system in this specific embodiment includes a wiring harness conduit (not shown) fixedly connected to the frame 1 and a pedal brake linkage 2 rotatably mounted on the frame 1 (the connection structure between the pedal brake linkage and the frame is not shown). A brake cable 3 is threaded through the wiring harness conduit. One end of the brake cable 3 is used to connect to the front brake pump, and the other end passes through the outlet end of the wiring harness conduit and is connected to the pedal brake linkage 2. It also includes a guide wheel bracket 4 fixedly connected to the frame 1. A guide wheel 5 is rotatably mounted on the guide wheel bracket 4. The guide wheel 5 is located on the side of the outlet end of the wiring harness conduit. After the brake cable 3 passes through the outlet end of the wiring harness conduit, it extends to the outer circumferential surface of the guide wheel 5, and after changing its extension direction around the guide wheel 5, it is connected to the pedal brake linkage 2. On the projection plane perpendicular to the center line of the outlet end of the wiring harness conduit, the cross-sectional projection of the brake cable 3 at the outlet end of the wiring harness conduit is located inside the projection of the pipe opening at the outlet end of the wiring harness conduit.

[0018] In this specific embodiment, the extension direction of the segment of the brake cable 3 located between the outlet end of the wire harness conduit and the guide wheel 5 is parallel to the center line of the outlet end of the wire harness conduit.

[0019] In this specific embodiment, an annular guide groove is provided on the outer peripheral surface of the guide wheel 5, and the brake cable 3 is housed in the annular guide groove.

[0020] In this specific embodiment, the cross-section of the annular guide groove is U-shaped.

[0021] In this specific embodiment, the guide wheel 5 is rotatably mounted on the axle 6 via a bearing. One end of the axle 6 in the axial direction of the guide wheel 5 protrudes to form a limiting block 7, and the other end is threadedly connected to the guide wheel bracket 4. The limiting block 7 and the guide wheel bracket 4 form a constraint on the axial movement of the guide wheel 5.

[0022] In this specific embodiment, a connecting handle 8 is rotatably mounted on the pedal brake linkage 2. The connecting handle 8 swings around its swing axis, which is parallel to the rotation center line of the guide wheel 5.

[0023] A motorcycle includes a wiring harness guide structure for a motorcycle CBS linked braking system as described above.

[0024] When not braking, the pedal brake linkage 2 is in its initial position, and the brake cable 3 is slightly taut. During braking, when the rear brake pedal is depressed, the pedal brake linkage 2 swings counterclockwise around its axis. Figure 2 (From the perspective direction), pull the brake cable 3. Due to the introduction of the guide wheel 5, the swing of the pedal brake linkage 2 is mainly converted into the axial movement (in and out) of the brake cable 3 at the outlet end of the wire harness guide tube. Constrained by the positional relationship, the brake cable 3 hardly produces radial displacement at the outlet end of the wire harness guide tube, transforming the original scraping action of the brake cable 3 at the tube opening into rolling friction with the guide wheel 5, thereby extending the service life of the brake cable and improving the overall vehicle braking safety. In addition, in the specific implementation process, the guide wheel 5 can also directly use a U-shaped bearing, making the structure simpler and more reliable.

[0025] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described with reference to preferred embodiments, those skilled in the art should understand that various changes in form and detail can be made without departing from the spirit and scope of this utility model as defined in the appended claims.

Claims

1. A wiring harness guide structure for a motorcycle CBS (Continuous Braking System), comprising a wiring harness conduit fixedly connected to the frame and a pedal brake linkage rotatably mounted on the frame, wherein a brake cable is threaded through the wiring harness conduit, one end of the brake cable is used to connect to the front brake pump, and the other end extends out of the wiring harness conduit outlet and is connected to the pedal brake linkage, characterized in that: It also includes a guide wheel bracket fixedly connected to the frame, on which a guide wheel is rotatably mounted. The guide wheel is located on the side of the outlet end of the wire harness conduit. The brake cable passes through the outlet end of the wire harness conduit and extends to the outer circumferential surface of the guide wheel. After passing around the guide wheel and changing its extension direction, it is connected to the pedal brake linkage. On the projection plane perpendicular to the center line of the outlet end of the wire harness conduit, the cross-sectional projection of the brake cable at the outlet end of the wire harness conduit is located inside the projection of the tube opening at the outlet end of the wire harness conduit.

2. The wiring harness guide structure of the motorcycle CBS linked braking system according to claim 1, characterized in that: The extension direction of the brake cable segment located between the outlet end of the wire harness conduit and the guide wheel is parallel to the center line of the outlet end of the wire harness conduit.

3. The wiring harness guide structure of the motorcycle CBS linked braking system according to claim 1, characterized in that: An annular guide groove is provided on the outer circumferential surface of the guide wheel, and the brake cable is housed in the annular guide groove.

4. The wiring harness guide structure of the motorcycle CBS linked braking system according to claim 3, characterized in that: The cross-section of the annular guide groove is U-shaped.

5. The wiring harness guide structure of the motorcycle CBS linked braking system according to claim 1, characterized in that: The guide wheel is rotatably mounted on the axle via a bearing. One end of the axle in the axial direction of the guide wheel protrudes to form a limit block, and the other end is threadedly connected to the guide wheel bracket. The limit block and the guide wheel bracket together form a constraint on the axial movement of the guide wheel.

6. The wiring harness guide structure of the motorcycle CBS linked braking system according to claim 1, characterized in that: A connecting handle is rotatably mounted on the pedal brake linkage. The connecting handle swings around its swing axis, which is parallel to the rotation center line of the guide wheel.

7. A motorcycle, characterized in that: Includes the wiring harness guide structure of the motorcycle CBS linked braking system as described in any one of claims 1 to 6.

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