Mud guard structure of commercial vehicle brake

Abstract

The utility model discloses a commercial vehicle brake fender structure which comprises a brake disc, a fender is arranged on the outer side of the brake disc, an observation hole is formed in the fender, and reinforcing ribs are arranged on the outer side of the fender. A central spindle penetrates through the middle of the brake disc, a steering knuckle is arranged on the central spindle, a wheel speed sensor is arranged on the steering knuckle, and the wheel speed sensor is located on the side of the observation hole. By the adoption of the commercial vehicle brake fender structure, ablation of the wheel speed sensor can be avoided, and the structural strength is reliable.

Description

Technical Field

[0001] The utility model belongs to the technical field of automobile parts, and specifically relates to a brake fender structure of a commercial vehicle. Background Art

[0002] As an important component of automobile braking, the brake mainly includes brake discs, brake calipers, steering knuckles, wheel hub bearings, fenders and other parts. Braking performance is the key consideration because the brake is used in harsh environments and often passes through wading, muddy and sandy roads. The brake is in such an environment, so the stability requirements are more stringent. The function of the brake fender is to prevent gravel, mud, sand and other debris from damaging the brake disc during driving. The current fender structure is relatively simple and is easily deformed after impact, which will affect the braking performance of the brake.

[0003] As a commercial vehicle, the main purpose of the vehicle is to carry cargo, and overloading has become a common phenomenon. Disc brakes will generate a lot of heat during the braking process (especially obvious on long downhill roads in mountainous areas), which will not only easily lead to brake thermal decay and affect the life of the brake disc and friction pad, but also radiate heat to the surrounding wheel speed sensors, causing wheel speed sensor ablation, leading to ABS function failure, and increasing the risk of causing safety accidents.

[0004] The utility model patent with announcement number CN204692387U was published on October 7, 2015. The name of the brake fender structure is a fender body, a reinforcing rib surface and a dustproof plane. The reinforcing rib surface connects the fender body and the dustproof plane. The reinforcing rib surface and the fender body form an angle greater than 90 degrees. The fender body is provided with a mounting hole, a first avoidance hole and a through hole. The dustproof plane is provided with a second avoidance hole. The brake fender structure cannot prevent the wheel speed sensor from being ablated. Utility Model Content

[0005] The utility model aims to provide a commercial vehicle brake fender structure which can avoid wheel speed sensor ablation and has reliable structural strength in view of the deficiencies in the prior art.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0007] The commercial vehicle brake fender structure comprises a brake disc, the fender is arranged on the outer side of the brake disc, an observation hole is arranged on the fender, and reinforcing ribs are arranged on the outer side of the fender; a core shaft passes through the middle of the brake disc, a steering knuckle is arranged on the core shaft, a wheel speed sensor is arranged on the steering knuckle, and the wheel speed sensor is located on the side of the observation hole.

[0008] A bearing is provided in the middle of the brake disc, a gear ring is provided at one end of the bearing, the end of the wheel speed sensor extends into the observation hole, and the end of the wheel speed sensor and the gear ring are in the same plane.

[0009] The observation hole is in a fan-shaped structure, and the edge of the observation hole is in an arc-shaped structure.

[0010] The reinforcing rib comprises an arc-shaped portion, the arc-shaped portion is arranged near the edge of the fender, a connecting portion is connected between the middle portion of the fender and the arc-shaped portion, and the reinforcing rib is an integrated structure.

[0011] The observation hole is arranged between the middle part and the arc-shaped part of the fender.

[0012] The edge of the brake disc is provided with a flange, and the end of the fender cooperates with the flange.

[0013] A avoidance opening is arranged at one end of the fender, and the edge of the fender is an arc-shaped structure.

[0014] The technical effect of the utility model is as follows: by adopting the commercial vehicle brake fender structure of the utility model, a fan-shaped observation hole is arranged on the fender, so the heat insulation and heat dissipation effect of the brake disc is improved, the heat radiation of the brake disc to the wheel speed sensor is reduced, the ablation of the wheel speed sensor and the heat insulation of the ball pin dust cover are avoided, and the ABS safety performance is improved; reinforcing ribs are also arranged on the fender to meet the requirement of preventing debris from intruding into the brake, effectively improving the structural strength of the fender, and preventing objects such as gravel, mud and sand from damaging the brake disc, thereby ensuring reliable braking performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] This specification includes the following drawings, which show the following contents:

[0016] Figure 1 It is a structural schematic diagram of a commercial vehicle brake fender structure of the utility model;

[0017] Figure 2 It is an axonometric view of the commercial vehicle brake fender structure of the utility model;

[0018] Figure 3 It is a side view of the commercial vehicle brake fender structure of the utility model.

[0019] The markings in the figure are: 1. brake disc; 2. mudguard; 3. steering knuckle; 4. wheel speed sensor; 5. core shaft; 6. observation hole; 7. bearing; 8. arc-shaped part; 9. connecting part; 10. flange; 11. reinforcing rib; 12. avoidance; 13. gear ring. DETAILED DESCRIPTION

[0020] The specific implementation methods of the utility model are further explained in detail below with reference to the accompanying drawings through the description of embodiments, with the aim of helping those skilled in the art to have a more complete, accurate and in-depth understanding of the inventive concept and technical solution of the present invention and to facilitate their implementation.

[0021] like Figures 1 to 3 As shown, the commercial vehicle brake fender structure includes a brake disc 1, a fender 2 arranged on the outside of the brake disc 1, an observation hole 6 is provided on the fender 2, and a reinforcing rib 11 is provided on the outside of the fender 2; a core shaft 5 passes through the middle of the brake disc 1, a steering knuckle 3 is provided on the core shaft 5, a wheel speed sensor 4 is provided on the steering knuckle 3, and the wheel speed sensor 4 is located on the side of the observation hole 6.

[0022] An observation hole 6 is provided at the upper right part of the fender 2, which can be used as a window for the probe of the wheel speed sensor 4 to monitor the gear ring 13. The fender 2 body can play a role in heat insulation and dust prevention. The observation hole 6 reduces the heat radiation of the brake disc 1 to the wheel speed sensor 4, and avoids the wheel speed sensor 4 from being burned by the high temperature of the brake disc 1. The circumferential width of the observation hole 6 is less than 61.5 mm, the depth is 36.8 mm, and the thickness is 0.7 mm. Its depth and width should not be too large.

[0023] During the emergency braking process of the vehicle, the friction between the brake disc 1 and the brake caliper will generate a lot of heat, which is transferred to the components near the brake disc 1 by means of thermal radiation. The wheel speed sensor 4 probe material is nylon PA612, whose thermal deformation temperature is about 190°C, and is easily affected by thermal radiation and ablated and damaged. By setting the observation hole 6, it is convenient for the wheel speed sensor 4 to detect the wheel speed of the ring gear 13 after the probe is inserted. The observation hole 6, as the corresponding part of the probe and the ring gear 13, not only reduces the heat radiation area of ​​the brake disc 1, but also allows air flow to enter the inside of the brake, improving heat dissipation, thereby achieving the effect of protecting the wheel speed sensor 4. In addition, a dust cover is set on the outside of the ball stud of the steering knuckle 3. Since the ball stud dust cover is a rubber part, it is easy to fail when encountering high temperature and needs to be insulated. The brake disc 1 and the ball stud dust cover need to be isolated from each other. The fender 2 provided with the observation hole 6 can prevent heat from being transferred to the ball stud dust cover, that is, the insulation effect is achieved.

[0024] like Figure 2As shown, a bearing 7 is provided in the middle of the brake disc 1, a gear ring 13 is provided at one end of the bearing 7, and the end of the wheel speed sensor 4 extends into the observation hole 6, and the end of the wheel speed sensor 4 and the gear ring 13 are in the same plane. The brake disc 1 is fixedly connected to the bearing 7, and the bearing 7 is connected to the steering knuckle 3 through the mandrel 5. The wheel speed sensor 4 is installed on the steering knuckle 3 to match the target wheel gear ring 13; the wheel speed sensor 4 corresponds to the gear ring 13 to detect the wheel speed through electromagnetic induction, and the observation hole 6 corresponds to the probe of the wheel speed sensor 4. The airflow can enter from the observation hole 6 to take away the heat, and it is also convenient for the wheel speed sensor 4 to extend from the outside of the brake disc 1 to the gear ring 13, which is convenient for the installation of the wheel speed sensor 4.

[0025] like Figure 3 As shown, the observation hole 6 is a fan-shaped structure, and the edge of the observation hole 6 is an arc-shaped structure. In the above structure, the observation hole 6 of the fan-shaped structure has a large opening at one end corresponding to the edge of the fender 2, and a small opening at the other end corresponding to the middle of the fender 2. Its shape corresponds to the shape structure of the brake, which can avoid the reduction of the structural performance of the fender 2 caused by the setting of the observation hole 6. The edge of the observation hole 6 of the arc structure has a smooth transition, which can effectively reduce the stress concentration of the hole structure, improve its durability, and extend the service life of the fender 2 as a whole.

[0026] like Figures 1 to 3 As shown, the reinforcing rib 11 includes an arc portion 8, which is arranged near the edge of the fender 2, and a connecting portion 9 is connected between the middle of the fender 2 and the arc portion 8, and the reinforcing rib 11 is an integrated structure. The above structure effectively improves the structural strength of the fender 2 through the reasonable layout of the reinforcing rib 11, wherein the arc portion 8 improves the structural strength of the edge of the fender 2, and the connecting portion 9 improves the structural strength between the middle and the edge of the fender 2. When the fender 2 is impacted by gravel, mud and sand, the impact can be transmitted to the reinforcing rib 11 as a whole through the arc portion 8 or the connecting portion 9, and the deformation of the fender 2 is reduced by dispersing the impact, thereby extending its service life.

[0027] like Figure 3 As shown, the observation hole 6 is arranged between the middle part of the fender 2 and the arc-shaped portion 8. In the above structure, the observation hole 6 on the fender 2 will not affect the structural strength of the fender 2, and the arrangement of the observation hole 6 does not affect the distribution area of ​​the arc-shaped portion 8 and the connecting portion 9, so the reinforcing rib 11 achieves a uniform effect, ensuring that the structural strength of the entire surface area of ​​the fender 2 is uniform and reliable, thereby effectively protecting the upper components of the brake.

[0028] like Figure 1As shown, the edge of the brake disc 1 is provided with a flange 10, and the end of the fender 2 cooperates with the flange 10. A press-fitting hole is provided in the middle of the fender 2, and the middle of the fender 2 is press-fitted on the steering knuckle 3 through the flange 10 of the press-fitting hole, and the edge of the fender 2 is installed with the brake disc 1 through the flange 10. The above structure facilitates the installation of the fender 2, ensures the stability of the fender 2 after installation, and provides a basis for the fender 2 to play a protective role.

[0029] like Figure 3 As shown, a clearance opening 12 is provided at one end of the fender 2, and the edge of the fender 2 is an arc-shaped structure. The clearance opening 12 area can be installed with components such as a brake air chamber, and the arc-shaped structure can reduce stress concentration at the edge of the fender 2 and prevent deformation.

[0030] The commercial vehicle brake fender structure improves the heat insulation and heat dissipation effect of the brake disc 1 by arranging a fan-shaped observation hole 6 on the fender 2, reduces the heat radiation of the brake disc 1 to the wheel speed sensor 4, avoids the ablation of the wheel speed sensor 4 and the heat insulation of the ball stud dust cover, and improves the ABS safety performance; the fender 2 is also provided with a reinforcing rib 11 to meet the requirement of preventing debris from intruding into the brake, effectively improves the structural strength of the fender 2, can prevent objects such as gravel, mud and sand from damaging the brake disc 1, and ensures reliable braking performance.

[0031] The above is an exemplary description of the utility model in conjunction with the accompanying drawings. Obviously, the specific implementation of the utility model is not limited to the above-mentioned method. As long as various non-substantial improvements are made using the method concept and technical solution of the utility model; or the above concept and technical solution of the utility model are directly applied to other occasions without improvement, they are all within the protection scope of the utility model.

Claims

1. A commercial vehicle brake fender structure, characterized in that: The invention comprises a brake disc (1), a fender (2) arranged on the outer side of the brake disc (1), an observation hole (6) being provided on the fender (2), and a reinforcing rib (11) being provided on the outer side of the fender (2); a core shaft (5) passing through the middle of the brake disc (1), a steering knuckle (3) being provided on the core shaft (5), a wheel speed sensor (4) being provided on the steering knuckle (3), and the wheel speed sensor (4) being located on the side of the observation hole (6).

2. The commercial vehicle brake fender structure according to claim 1, characterized in that: A bearing (7) is provided in the middle of the brake disc (1), a gear ring (13) is provided at one end of the bearing (7), an end of the wheel speed sensor (4) extends into the observation hole (6), and the end of the wheel speed sensor (4) and the gear ring (13) are in the same plane.

3. The commercial vehicle brake fender structure according to claim 1 or 2, characterized in that: The observation hole (6) is in a fan-shaped structure, and the edge of the observation hole (6) is in an arc-shaped structure.

4. The commercial vehicle brake fender structure according to claim 3, characterized in that: The reinforcing rib (11) comprises an arc-shaped portion (8), the arc-shaped portion (8) being arranged near the edge of the fender (2), a connecting portion (9) being connected between the middle of the fender (2) and the arc-shaped portion (8), and the reinforcing rib (11) being an integrated structure.

5. The commercial vehicle brake fender structure according to claim 4, characterized in that: The observation hole (6) is arranged between the middle part of the fender (2) and the arc-shaped part (8).

6. The commercial vehicle brake fender structure according to claim 5, characterized in that: The edge of the brake disc (1) is provided with a flange (10), and the end of the fender (2) cooperates with the flange (10).

7. The commercial vehicle brake fender structure according to claim 1, characterized in that: One end of the fender (2) is provided with an escape opening (12), and the edge of the fender (2) is an arc-shaped structure.

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