A new type of multi-cavity heat dissipation automobile brake drum

Abstract

The utility model relates to the technical field of automobile parts, disclose a novel automobile brake drum of multi -cavity heat dissipation, aims at solving the low heat dissipation efficiency of existing brake drum and the problem of inconvenient installation. The utility model discloses base, install the heat dissipation brake drum of base, the inside of heat dissipation brake drum is equipped with brake shoe, is equipped with the hydraulic cylinder drive brake shoe removal on the base. Its innovation lies in: the drum wall of heat dissipation brake drum is set up and has the heat dissipation hole, and the outer periphery of brake drum is equipped with heat dissipation subassembly. Heat dissipation subassembly includes the control board of rotation setting in the outer surface of heat dissipation brake drum, and the linkage assembly of transmission connection with brake shoe. Linkage assembly includes rotating column, rotating plate, fixed block and telescopic link, and control board is fixedly connected with rotating column through rotating block, and one end of rotating plate is rotatably connected with rotating column. The utility model can intelligently adjust heat dissipation efficiency according to brake force, improve brake stability, and simplify installation process.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts technology, and in particular to a novel automotive brake drum with multi-cavity heat dissipation. Background Technology

[0002] The brake drum is a key safety component in a car's drum braking system. It generates braking torque through the friction between the brake pads and the inner wall of the brake drum, thereby slowing down or stopping the vehicle. During this braking process, the vehicle's kinetic energy is converted into heat energy, causing the temperature of the brake drum and brake pads to rise sharply.

[0003] To dissipate the enormous heat generated during braking, existing automotive brake drums typically have cooling fins designed on their outer surface. By increasing the contact area with the air, they rely on natural convection and radiation for passive heat dissipation. The efficiency of this cooling method largely depends on the vehicle's speed, i.e., on the external airflow velocity.

[0004] However, under high-load conditions such as prolonged downhill driving, driving on mountain roads, or frequent braking in congested urban traffic, the braking system continuously generates a large amount of heat. At this time, relying solely on passive heat dissipation, the rate of heat dissipation is often far lower than the rate of heat generation, causing heat to continuously accumulate inside the brake drum and making its temperature too high.

[0005] Excessive temperatures can cause brake fade, a phenomenon where the friction coefficient of the brake drum and brake pads decreases due to high temperatures, leading to reduced braking force, longer braking distance, and in severe cases, brake failure, posing a significant threat to driving safety. Furthermore, sustained high temperatures accelerate the wear of braking components, shortening their lifespan.

[0006] Therefore, this utility model proposes a novel multi-cavity heat dissipation automotive brake drum to overcome the shortcomings of the prior art. Utility Model Content

[0007] In view of the problems of low heat dissipation efficiency, unstable braking performance and cumbersome installation and fixing process of existing automotive brake drums, this utility model aims to provide a novel automotive brake drum with improved structure and multi-cavity heat dissipation that can effectively solve the above problems.

[0008] This utility model provides a novel multi-cavity heat dissipation automotive brake drum, including: a base, and a heat dissipation brake drum mounted on the base. The heat dissipation brake drum is provided with brake shoes inside, and also includes a hydraulic cylinder mounted on the base for driving the brake shoes to move.

[0009] The heat dissipation brake drum has heat dissipation holes on its drum wall;

[0010] Furthermore, the brake drum also includes a heat dissipation assembly disposed on the outer periphery of the heat dissipation brake drum. The heat dissipation assembly includes a control plate rotatably disposed on the outer surface of the heat dissipation brake drum and used to selectively cover or expose the heat dissipation holes, and a linkage assembly for driving the control plate to rotate according to the movement of the brake shoes.

[0011] The linkage assembly includes a rotating column, a rotating plate, a fixed block, and a telescopic rod. The control plate is fixedly connected to the rotating column via the rotating block, one end of the rotating plate is rotatably connected to the rotating column, one end of the telescopic rod is hinged to the other end of the rotating plate, and the other end of the telescopic rod is fixedly connected to the brake shoe via the fixed block. This structure directly drives the control plate to rotate through the displacement of the brake shoe, thus achieving control of the opening and closing of the heat dissipation holes.

[0012] Preferably, the present invention also includes a locking component for detachably fixing the heat dissipation brake drum to the base.

[0013] Preferably, the locking assembly includes a hollow sliding column that passes through the heat dissipation brake drum and is inserted into a pre-set hole in the base; a sliding rod that is slidably disposed in the inner cavity of the sliding column; and a locking bead that is radially telescopically mounted on the side wall of the sliding column, the locking bead being extended or retracted by the axial movement of the sliding rod to engage or disengage with the inner wall of the base.

[0014] Preferably, the locking assembly further includes a locking block fixedly connected to the inner end of the sliding rod, and the outer peripheral surface of the locking block is provided with a wedge-shaped inclined surface for squeezing or releasing the locking bead.

[0015] Preferably, the locking assembly further includes a button fixedly connected to the outer end of the sliding rod; and a spring sleeved on the sliding rod, with the two ends of the spring abutting against the inner side of the button and the end wall of the sliding rod, respectively.

[0016] Preferably, the locking assembly further includes a retaining ring, which is fixed to the end of the sliding post near the button.

[0017] Preferably, the control plate has through holes, and when the control plate is rotated to a predetermined position, the through holes on it are aligned and connected with the heat dissipation holes on the heat dissipation brake drum.

[0018] Preferably, the rotating block and the rotating column are coaxial and integrated.

[0019] This utility model has the following beneficial effects:

[0020] 1. This utility model solves the problem of low heat dissipation efficiency of brake drums in the prior art, which is prone to thermal fade under high load conditions and affects braking safety by setting an adjustment plate that is linked to the movement of brake shoes and heat dissipation holes on the heat dissipation brake drum. The adjustment plate is driven to rotate by the braking action to automatically open or close the heat dissipation holes. This achieves the technical effect of intelligently adjusting the heat dissipation efficiency according to the braking force, effectively reducing the temperature of the brake drum, and improving braking performance and stability.

[0021] 2. This utility model solves the problem that existing heat dissipation methods cannot dissipate heat as needed, resulting in insufficient or excessive cooling, by establishing a direct mechanical linkage between braking force and the rotation angle of the control plate. It achieves controllable heat dissipation flow, can accurately match the heat dissipation requirements under different braking conditions, and improves the intelligence level and service life of the device.

[0022] 3. This utility model solves the problem of complex, time-consuming and labor-intensive installation of existing brake drums, which are fixed by multiple parts such as bolts, by setting a push-type locking assembly consisting of a button, spring, locking block and locking ball. It achieves the technical effect of quickly and conveniently installing and fixing the brake drum to the base, simplifying the assembly process and improving production and maintenance efficiency. Attached Figure Description

[0023] Figure 1 A three-dimensional schematic diagram of a novel multi-cavity heat dissipation automotive brake drum proposed in this utility model;

[0024] Figure 2 This is a schematic diagram of the rotating block of a novel multi-cavity heat dissipation automotive brake drum proposed in this utility model;

[0025] Figure 3 A schematic diagram of the sliding column of a novel multi-cavity heat dissipation automotive brake drum proposed in this utility model;

[0026] Figure 4 for Figure 3 Enlarged view of point A in the middle.

[0027] Legend:

[0028] 1. Base; 2. Heat dissipation components;

[0029] 21. Heat dissipation brake drum; 22. Rotating block; 23. Control plate; 24. Rotating column; 25. Linkage assembly; 251. Rotating plate; 252. Fixing block; 253. Telescopic rod;

[0030] 3. Locking assembly; 31. Retaining ring; 32. Button; 33. Sliding post; 34. Sliding rod; 35. Spring; 36. Locking bead; 37. Locking block;

[0031] 4. Hydraulic cylinder; 5. Brake pads. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0033] Example:

[0034] Please refer to Figures 1 to 4 This utility model provides a novel multi-cavity heat dissipation automotive brake drum, which aims to solve the problems of insufficient heat dissipation efficiency leading to decreased braking performance and cumbersome installation and fixing process of existing automotive brake drums.

[0035] like Figure 1 As shown, the novel multi-cavity heat dissipation automotive brake drum includes a base 1 and a heat dissipation brake drum 21 mounted on the base 1. Brake shoes 5 are provided in the internal space of the heat dissipation brake drum 21. A hydraulic cylinder 4 is also fixedly mounted on the base 1. The hydraulic cylinder 4 is used to drive the brake shoes 5 to move radially so as to contact and rub against the inner wall of the heat dissipation brake drum 21.

[0036] The cooling brake drum 21 has cooling holes on its drum wall and a cooling component 2 is provided on the outer periphery of the cooling brake drum 21. The cooling component 2 is used to automatically adjust the opening and closing of the cooling holes according to the movement of the brake shoes 5.

[0037] like Figure 1 and Figure 2 As shown, the heat dissipation assembly 2 includes an adjustment plate 23 rotatably mounted on the outer surface of the heat dissipation brake drum 21, and a linkage assembly 25 that is connected to the brake shoe 5. The linkage assembly 25 is used to drive the adjustment plate 23 to rotate. The linkage assembly 25 includes a rotating column 24, a rotating plate 251, a fixed block 252, and a telescopic rod 253. The specific connection relationship is as follows: the adjustment plate 23 is fixedly connected to the rotating column 24 through the rotating block 22, one end of the rotating plate 251 is rotatably connected to the rotating column 24, one end of the telescopic rod 253 is hinged to the other end of the rotating plate 251, and the other end of the telescopic rod 253 is fixedly connected to the brake shoe 5 through the fixed block 252.

[0038] To solve the above-mentioned technical problems, the core of the technical solution of this embodiment is that the novel multi-cavity heat dissipation automotive brake drum also includes a locking component 3 for quickly fixing the heat dissipation brake drum 21 to the base 1, and the locking component 3 forms a specific structural fit and detachable connection relationship with the heat dissipation brake drum 21 and the base 1.

[0039] Please refer to the following carefully. Figure 3 and Figure 4 The core structure of the locking component 3 will be described in detail below:

[0040] The locking assembly 3 includes a hollow sliding post 33, a sliding rod 34 slidably disposed in the inner cavity of the sliding post 33, a button 32 fixedly connected to the outer end of the sliding rod 34, a spring 35 sleeved on the sliding rod 34, a plurality of locking beads 36 radially telescopically mounted on the side wall of the sliding post 33, and a locking block 37 fixedly connected to the inner end of the sliding rod 34.

[0041] In the specific structure, the outer peripheral surface of the locking block 37 is provided with a wedge-shaped inclined surface for squeezing or releasing the locking bead 36. The two ends of the spring 35 abut against the inner side of the button 32 and the end wall of the sliding post 33 respectively, thereby applying a continuous outward pushing force to the button 32 and the sliding rod 34. The locking assembly 3 also includes a fixing ring 31, which is fixed to the end of the sliding post 33 near the button 32.

[0042] In the assembled state, the sliding post 33 passes through the heat dissipation brake drum 21 and is inserted into the preset hole of the base 1. The locking bead 36 extends radially under the compression of the locking block 37 driven by the spring 35 and forms a snap-fit ​​with the inner wall of the base 1. This locking structure, which utilizes the radial extension and retraction of the locking bead 36, ensures a quick and reliable fixed connection between the heat dissipation brake drum 21 and the base 1.

[0043] Based on the above embodiments, the present invention may further include the following preferred technical solutions:

[0044] As a preferred embodiment, in order to achieve on / off control of the heat dissipation airflow, refer to Figure 1 The control plate 23 has through holes. When the control plate 23 is rotated to the predetermined working position under the drive of the linkage component 25, the through holes on it are aligned with the heat dissipation holes on the heat dissipation brake drum 21 and form a communication state, thereby forming a channel for cold air to enter.

[0045] As another preferred embodiment, in order to enhance transmission rigidity and simplify assembly, the rotating block 22 and the rotating column 24 are configured as a coaxial integrated structure. This integrated structure ensures that the torque transmission from the rotating column 24 to the rotating block 22 is seamless, thereby improving the responsiveness and accuracy of the control plate 23.

[0046] The working principle is as follows:

[0047] When braking is required, the hydraulic cylinder 4 pushes the brake shoes 5 to move to both sides. The movement of the brake shoes 5 drives the telescopic rod 253 to move through the fixed block 252. The movement of the telescopic rod 253 then drives the rotating plate 251 to rotate. Since the rotating plate 251 is rotatably connected to the rotating column 24, the rotation of the rotating plate 251 drives the rotating column 24 and the rotating block 22 fixedly connected to it to rotate synchronously. Finally, it drives the control plate 23 to rotate. After the control plate 23 rotates, its through hole aligns and connects with the heat dissipation hole on the heat dissipation brake drum 21. External cold air can enter the brake drum for rapid cooling. The magnitude of the braking force controls the movement amplitude of the entire linkage assembly 25, thereby achieving precise control of the opening and closing size of the heat dissipation hole. When braking is completed, the brake shoes 5 reset and drive the entire linkage assembly 25 to move in the opposite direction, causing the control plate 23 to rotate and reset to close the heat dissipation hole.

[0048] When installation is required, press down on button 32 of locking component 3. Button 32 drives sliding rod 34 to slide inward in the inner cavity of sliding column 33 and compress spring 35. The movement of sliding rod 34 causes locking block 37 at its end to move synchronously. After locking block 37 moves, its wedge-shaped inclined surface stops radially compressing locking bead 36. Locking bead 36 retracts inward into the side wall of sliding column 33. At this time, slide the entire sliding column 33 into the preset hole of base 1. After releasing button 32, the compressed spring 35 rebounds, pushing sliding rod 34 and locking block 37 to reset in the opposite direction. The reset locking block 37 once again squeezes locking bead 36 outward through its wedge-shaped inclined surface, so that locking bead 36 is firmly abutted against the inner wall of base 1. Through the snap-fit ​​between locking bead 36 and base 1 and the cooperation between sliding column 33 and heat dissipation brake drum 21, the overall quick installation and fixation are achieved.

Claims

1. A novel multi-cavity heat dissipation automotive brake drum, comprising: The base (1) and the heat dissipation brake drum (21) installed on the base (1) have heat dissipation holes on the drum wall. The brake drum is provided with brake shoes (5) inside, and also includes a hydraulic cylinder (4) disposed on the base (1) for driving the brake shoes (5) to move. Its features are, The brake drum also includes a heat dissipation assembly (2) disposed on the outer periphery of the heat dissipation brake drum (21). The heat dissipation assembly (2) includes a control plate (23) rotatably disposed on the outer surface of the heat dissipation brake drum (21) and used to selectively cover or expose the heat dissipation holes, and a linkage assembly (25) used to drive the control plate (23) to rotate according to the movement of the brake shoe (5). The linkage component (25) includes a rotating column (24), a rotating plate (251), a fixing block (252), and a telescopic rod (253). The control plate (23) is fixedly connected to the rotating column (24) via the rotating block (22); One end of the rotating plate (251) is rotatably connected to the rotating column (24), one end of the telescopic rod (253) is hinged to the other end of the rotating plate (251), and the other end of the telescopic rod (253) is fixedly connected to the brake shoe (5) through the fixing block (252).

2. The novel multi-cavity heat dissipation automotive brake drum according to claim 1, characterized in that, It also includes a locking assembly (3) for detachably securing the heat dissipation brake drum (21) to the base (1).

3. A novel multi-cavity heat dissipation automotive brake drum according to claim 2, characterized in that, The locking component (3) includes: A hollow sliding column (33) passes through the heat dissipation brake drum (21) and is inserted into a preset hole in the base (1); The sliding rod (34) is slidably disposed in the inner cavity of the sliding column (33); And a locking bead (36) that is radially telescopically mounted on the side wall of the sliding column (33), the locking bead (36) being extended or retracted by the axial movement of the sliding rod (34) to engage or disengage with the inner wall of the base (1).

4. A novel multi-cavity heat dissipation automotive brake drum according to claim 3, characterized in that, The locking assembly (3) further includes a locking block (37) fixedly connected to the inner end of the sliding rod (34), and the outer peripheral surface of the locking block (37) is provided with a wedge-shaped inclined surface for squeezing or releasing the locking bead (36).

5. A novel multi-cavity heat dissipation automotive brake drum according to claim 3, characterized in that, The locking component (3) further includes: A button (32) is fixedly connected to the outer end of the sliding rod (34); And a spring (35) sleeved on the sliding rod (34), the two ends of the spring (35) respectively abutting the inner side of the button (32) and the end wall of the sliding column (33).

6. A novel multi-cavity heat dissipation automotive brake drum according to claim 3, characterized in that, The locking assembly (3) also includes a retaining ring (31) which is fixed to one end of the sliding post (33) near the button (32).

7. A novel multi-cavity heat dissipation automotive brake drum according to claim 1, characterized in that, The control plate (23) has a through hole. When the control plate (23) is rotated to a predetermined position, the through hole on it is aligned and connected with the heat dissipation hole on the heat dissipation brake drum (21).

8. A novel multi-cavity heat dissipation automotive brake drum according to claim 1, characterized in that, The rotating block (22) and the rotating column (24) are coaxial and integrated.

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