Floating disc type wheel end assembly

Abstract

A floating disc type wheel end assembly comprises a hub, the end of the hub is movably connected with a brake disc, a through hole is formed in the middle of the brake disc, and a matched connecting assembly is arranged on the portion, corresponding to the through hole, of the hub. The movable brake disc is adopted, when the brake pads on the two sides clamp the brake disc, the brake disc can move transversely, the same friction force is generated between the brake disc and the two brake pads, and therefore it is guaranteed that the abrasion degrees of the two brake pads cannot be different, the brake force generated during braking is higher, and the service life of the brake pads is longer; during replacement, the two brake pads are worn to the same degree, and waste is avoided.

Description

Technical Field

[0001] This utility model relates to the field of vehicle braking technology, and more specifically to a floating disc wheel end assembly. Background Technology

[0002] When a car brakes, air enters the brake chamber through the air intake. Under the pressure of the air, the diaphragm deforms, pushing the push rod and driving the brake adjusting arm to rotate the brake cam. This forces the brake shoe friction pads against the brake drum, generating braking force. Currently, almost all brake discs and brake pads use fixed brake discs. After braking, the brake pads move towards the brake disc, clamping it from both sides to generate braking force. This design has a drawback: the braking force received by the brake pads on both sides is different, resulting in different wear levels on the two brake pads and the two sides of the brake disc. When one side of the brake pad or brake disc wears down to its maximum allowable thickness, both brake pads and the brake disc must be replaced together, leading to waste. Utility Model Content

[0003] One advantage of this invention is that it provides a floating disc wheel end assembly with a movable brake disc. When the brake pads on both sides clamp the brake disc, the brake disc moves laterally, so that the brake disc and the two brake pads generate the same friction force. This ensures that the wear of the two brake pads is not different, resulting in stronger braking force and a longer service life for the brake pads. When replacing the brake pads, both brake pads are worn to the same degree, so there is no waste.

[0004] To achieve at least one of the above advantages of this utility model, this utility model provides a floating disc wheel end assembly, including a wheel hub, a brake disc movably connected to the end of the wheel hub, a through hole provided in the middle of the brake disc, and a matching connecting component provided in the corresponding part of the wheel hub and the through hole.

[0005] According to one embodiment of the present invention, the connecting component includes a spline protrusion fixedly disposed on the outer surface of the wheel hub and a brake groove fixedly disposed on the inner side of the brake disc.

[0006] According to one embodiment of the present invention, the part where the wheel hub connects to the brake disc is called the connecting part, and the spline protrusion is fixedly disposed on the connecting part.

[0007] According to one embodiment of the present invention, the longitudinal section of the spline protrusion is a trapezoid with an outer width smaller than the inner width.

[0008] According to one embodiment of the present invention, the brake disc has a two-section structure, the outer part of which is a disc-shaped structure that is clamped by the brake pads during braking, and the inner end of which is a cylindrical structure connected to the connecting part, and the thickness of the inner end is greater than the thickness of the outer end.

[0009] According to one embodiment of the present invention, the thickness of the inner end is less than the thickness of the connecting portion.

[0010] According to one embodiment of the present invention, the longitudinal cross-sectional shape of the brake groove is the same as that of the spline protrusion. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of this utility model;

[0012] Figure 2 This is a cross-sectional schematic diagram of the present invention;

[0013] In the attached diagram: 1. Wheel hub, 2. Brake disc, 3. Brake groove, 4. Connecting part, 5. Spline protrusion. Detailed Implementation

[0014] To make the objectives, technical solutions, and advantages of this utility model clearer, the following description will be provided in conjunction with the appendix of this utility model. Figure 1 ~Attached Figure 2 The present invention will be described in more detail below.

[0015] The following description is intended to disclose the present invention so that those skilled in the art can implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art. The basic principles of the present invention defined in the following description can be applied to other embodiments, modifications, improvements, equivalents, and other technical solutions that do not depart from the spirit and scope of the present invention.

[0016] Those skilled in the art should understand that, in the disclosure of this specification, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model 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, the above terms should not be construed as limitations on this utility model.

[0017] It is understood that the term "a" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element can be one, while in another embodiment, the number of the element can be multiple, and the term "a" should not be understood as a limitation on the number.

[0018] This utility model provides a floating disc wheel end assembly 2, including a hub 1, with a brake disc 2 movably connected to the end of the hub 1. The brake disc 2 has a through hole in its center, and a matching connecting component is provided on the corresponding part of the hub 1 and the through hole. The connecting component includes a spline protrusion 5 fixedly mounted on the outer surface of the hub 1 and a brake groove 3 fixedly mounted on the inner side of the brake disc 2. The part connecting the hub 1 and the brake disc 2 is a connecting part 4, and the spline protrusion 5 is fixedly mounted on the connecting part 4. The longitudinal section of the spline protrusion 5 is a trapezoid with an outer width smaller than the inner width. The brake disc 2 has a two-section structure; its outer part is a disc-shaped structure clamped by brake pads during braking, and its inner end is a cylindrical structure connected to the connecting part 4, with the thickness of the inner end greater than that of the outer end and less than that of the connecting part 4. The longitudinal section shape of the brake groove 3 is the same as that of the spline protrusion 5.

[0019] The first embodiment of this utility model is as follows:

[0020] A floating disc wheel end assembly 2 includes a wheel hub 1. The part where the wheel hub 1 connects to the brake disc 2 is a connecting part 4. The connecting part 4 is movably connected to the brake disc 2. A through hole is provided in the middle of the brake disc 2. The wheel hub 1 and the part corresponding to the through hole are provided with matching connecting components.

[0021] The connecting assembly includes a spline protrusion 5 fixedly mounted on the outer surface of the wheel hub 1 and a brake groove 3 fixedly mounted on the inner side of the brake disc 2. The wheel hub 1 and the brake disc 2 are connected together through the spline protrusion 5 and the brake groove 3, allowing the brake disc 2 to move laterally on the wheel hub 1. In use, one brake pad is in a fixed state, while the other brake pad is in a movable state. After the movable brake pad moves, it contacts one side of the brake disc 2 and pushes it, causing the brake disc 2 to move toward and contact the fixed brake pad. Then, the brake pads on both sides clamp the brake disc 2 with the same braking force, ensuring that the wear degree of the two brake pads does not differ. After the brake disc 2 moves, compared with the prior art where the clamping force of the brake pads on both sides is different, the clamping force of the brake pads on both sides in this application is the same, thereby generating a stronger braking force when braking. In addition, the two brake pads develop the same degree of wear simultaneously, which is less than the wear degree of the unilateral wear in the prior art, and the service life of the brake pads is longer. When replacing, both brake pads are worn to the same degree, so there is no waste.

[0022] The spline protrusion 5 is fixedly mounted on the connecting part 4. The longitudinal section of the spline protrusion 5 is a trapezoid with an outer width smaller than the inner width. The longitudinal section shape of the brake groove 3 is the same as that of the spline protrusion 5, ensuring that the brake disc 2 can only move laterally and cannot rotate relative to each other, resulting in better braking effect and preventing the spline protrusion 5 and the brake groove 3 from colliding during braking.

[0023] The brake disc 2 has a two-section structure. Its outer part is a disc-shaped structure that is clamped by the brake pads during braking. Its inner end is a cylindrical structure connected to the connecting part 4. The thickness of the inner end is greater than that of the outer end, so that when braking force is generated between the brake groove 3 and the spline protrusion 5, the pressure generated at the contact point is smaller, which is beneficial to extending the service life of the brake disc 2. The thickness of the inner end is less than that of the connecting part 4.

[0024] It should be noted that the terms "first, second, and third" used in this utility model are for descriptive purposes only and do not indicate any order. They should not be construed as indicating or implying relative importance, and can be interpreted as names.

[0025] Those skilled in the art should understand that the embodiments of the present invention described above and shown in the accompanying drawings are merely examples and do not limit the present invention. The advantages of the present invention have been fully and effectively realized. The functional and structural principles of the present invention have been shown and explained in the embodiments. Without departing from the principles, the implementation of the present invention may have any modifications or variations.

Claims

1. A floating disc wheel end assembly, characterized in that: The device includes a wheel hub, the end of which is movably connected to a brake disc. The brake disc has a through hole in its center, and the wheel hub and the part corresponding to the through hole are provided with a matching connecting component. The connecting component includes a spline protrusion fixedly disposed on the outer surface of the wheel hub and a brake groove fixedly disposed on the inner surface of the brake disc.

2. The floating disc wheel end assembly according to claim 1, characterized in that: The part where the wheel hub connects to the brake disc is called the connecting part, and the spline protrusion is fixedly installed on the connecting part.

3. The floating disc wheel end assembly according to claim 2, characterized in that: The longitudinal section of the spline protrusion is a trapezoid with an outer width smaller than the inner width.

4. The floating disc wheel end assembly according to claim 3, characterized in that: The brake disc has a two-section structure. Its outer part is a disc-shaped structure that is clamped by the brake pads during braking, and its inner end is a cylindrical structure connected to the connecting part. The thickness of the inner end is greater than the thickness of the outer end.

5. The floating disc wheel end assembly according to claim 4, characterized in that: The thickness of the inner end is less than the thickness of the connecting part.

6. The floating disc wheel end assembly according to claim 2, characterized in that: The longitudinal cross-sectional shape of the brake groove is the same as that of the spline protrusion.

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