Heat dissipation shell of automobile gearbox

By designing a heat dissipation housing for the gearbox and adopting a combination of water circulation and air cooling, the problem of poor heat dissipation in existing gearboxes has been solved, achieving efficient heat dissipation of the housing and extending the service life of the gearbox.

CN224245399UActive Publication Date: 2026-05-15MAIDAO (ANHUI) PRECISION MANUFACTURING CO LTD
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Patent Information

Application Number
CN202521724919.5
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-08-14
Publication Date
2026-05-15
Estimated Expiration
2035-08-14

AI Technical Summary

Technical Problem

Existing transmission cooling structures have limited heat dissipation capabilities and cannot effectively dissipate heat from the housing, affecting the transmission's operation and lifespan.

Method used

Design a heat dissipation housing for automotive gearboxes, which adopts an upper and lower shell snap-fit ​​structure, with an internal cavity equipped with a water tank, a negative pressure pump, a cooling fan, and heat sinks. Heat dissipation is achieved through a combination of water circulation and air cooling. The negative pressure pump circulates water within the housing, and the heat sinks and cooling fan enhance the heat dissipation effect.

Benefits of technology

It achieves efficient heat dissipation of the gearbox housing, significantly enhancing the heat dissipation effect through a combination of water circulation and air cooling, thus extending the service life of the gearbox.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to the technical field of automobile gearboxes, and discloses an automobile gearbox heat dissipation shell which comprises an upper shell and a lower shell, the upper shell and the lower shell are connected in a clamped mode, square openings are formed in the adjacent sides of the upper shell and the lower shell, and cavities are formed in the inner walls of the upper shell and the lower shell. A water tank is fixedly connected to the top of the upper shell, a negative pressure pump is fixedly connected to the side wall of the water tank, and a water outlet pipe is fixedly connected to the output end of the negative pressure pump; according to the automobile gearbox heat dissipation shell, the upper shell and the lower shell are installed in a clamped mode, cavities formed in the inner walls of the upper shell and the lower shell can be filled with water, and the water in an inner cavity of the water tank is led to a first connecting pipe through a negative pressure pump and then led to the cavities formed in the upper shell and the lower shell; at the moment, water in the cavities is led to the water tank through the second connecting pipe and the water inlet pipe, so that water in the cavities in the upper shell and the lower shell can be circulated, and the cooling and heat dissipation effects of the upper shell and the lower shell are enhanced.
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Description

Technical Field

[0001] This utility model relates to the field of automotive transmission technology, specifically to a heat dissipation housing for automotive transmissions. Background Technology

[0002] The gearbox mainly refers to the car's gearbox, which is divided into manual and automatic types. Manual gearboxes are mainly composed of gears and shafts, and different gear combinations produce speed and torque changes. Automatic gearboxes (AT) are composed of a torque converter, planetary gears, a hydraulic torque converter system, and a hydraulic control system. They achieve speed and torque changes through hydraulic transmission and gear combinations. During operation, the gearbox generates heat, which can affect its operation and lifespan. Therefore, heat dissipation structures are often designed into the gearbox.

[0003] In the existing technology, most of the heat dissipation structures of gearboxes are heat sinks, but the heat dissipation effect of heat sinks is limited and cannot fully dissipate the heat of the casing. Utility Model Content

[0004] In view of the shortcomings of the prior art, this utility model provides a heat dissipation housing for automotive gearboxes, which has the advantage of easy heat dissipation and avoids the problem of poor heat dissipation effect.

[0005] To facilitate heat dissipation, this utility model provides the following technical solution:

[0006] A heat dissipation housing for an automotive transmission includes an upper outer shell and a lower outer shell, which are interlocked. Both the upper and lower outer shells have square openings on adjacent sides. The housing also includes:

[0007] Both the upper and lower outer shells have cavities in their inner walls. A water tank is fixedly connected to the top of the upper outer shell, and a negative pressure pump is fixedly connected to the side wall of the water tank. A water outlet pipe is fixedly connected to the output end of the negative pressure pump, and a first connecting pipe is snapped into the end of the water outlet pipe. A water inlet pipe is fixedly connected to the side wall of the water tank, and a second connecting pipe is snapped into the end of the water inlet pipe. Both the first and second connecting pipes are connected to the cavities of the upper and lower outer shells, respectively.

[0008] According to some embodiments, a cooling fan is fixedly connected to the top of the water tank, and arc-shaped openings are provided on both sides of the upper and lower outer shells. The upper and lower outer shells are symmetrically arranged, and the arc-shaped openings are connected to the square openings.

[0009] According to some embodiments, multiple sets of heat sinks are fixedly connected to both side walls of the upper and lower outer shells, and the heat sinks penetrate the cavity. A connecting plate is fixedly connected to both side walls of the upper and lower outer shells, and a fixing bolt is threaded to the top of the connecting plate.

[0010] Beneficial effects

[0011] This utility model provides a heat dissipation housing for an automotive gearbox, which has the following advantages:

[0012] The automotive gearbox cooling housing consists of an upper and lower outer shell that are snapped together. Water fills the cavities on the inner walls of the upper and lower outer shells. A negative pressure pump directs water from the water tank cavity to the first connecting pipe, and then to the cavities on the upper and lower outer shells. The water inside these cavities then flows to the water tank through the second connecting pipe and the inlet pipe. This allows the water inside the cavities of the upper and lower outer shells to circulate, enhancing the cooling and heat dissipation effect of the upper and lower outer shells. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of the device of this utility model;

[0014] Figure 2 This is a schematic diagram (front view) of the structure of the device of this utility model;

[0015] Figure 3 This is a partial cross-sectional structural diagram of the upper shell of this utility model;

[0016] Figure 4 This is a partial cross-sectional structural diagram of the lower outer shell of this utility model.

[0017] In the diagram: 1. Upper outer shell; 101. Lower outer shell; 102. Square opening; 2. Cavity; 201. Water tank; 202. Negative pressure pump; 203. Water outlet pipe; 204. First connecting pipe; 205. Water inlet pipe; 206. Second connecting pipe; 3. Cooling fan; 301. Arc-shaped opening; 4. Heat sink; 401. Connecting plate; 402. Fixing bolt. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Reference Figures 1-4 A heat dissipation housing for an automotive transmission includes an upper outer shell 1 and a lower outer shell 101, which are interlocked. Both the upper and lower outer shells 1 and 101 have square openings 102 on adjacent sides. The housing also includes:

[0020] The inner walls of the upper outer shell 1 and the lower outer shell 101 are both provided with cavities 2. A water tank 201 is fixedly connected to the top of the upper outer shell 1. A negative pressure pump 202 is fixedly connected to the side wall of the water tank 201. A water outlet pipe 203 is fixedly connected to the output end of the negative pressure pump 202. A first connecting pipe 204 is snapped into the end of the water outlet pipe 203. A water inlet pipe 205 is fixedly connected to the side wall of the water tank 201.

[0021] The end of the water inlet pipe 205 is snapped with a second connecting pipe 206, and both the first connecting pipe 204 and the second connecting pipe 206 are connected to the cavities 2 of the upper outer shell 1 and the lower outer shell 101, respectively.

[0022] It should be noted that when the upper outer shell 1 and the lower outer shell 101 are snapped together, water will fill the cavity 2 set in the inner wall of the upper outer shell 1 and the lower outer shell 101. Using the negative pressure pump 202 on the side wall of the water tank 201, the water in the inner cavity of the water tank 201 is circulated to the first connecting pipe 204, and then to the cavity 2 set in the upper outer shell 1 and the lower outer shell 101. At this time, the water inside the cavity 2 is circulated to the water tank 201 through the second connecting pipe 206 and the water inlet pipe 205. This allows the water inside the cavity 2 of the upper outer shell 1 and the lower outer shell 101 to circulate, thereby enhancing the cooling and heat dissipation effect of the upper outer shell 1 and the lower outer shell 101.

[0023] Reference Figures 1-4 A cooling fan 3 is fixedly connected to the top of the water tank 201, and arc-shaped openings 301 are provided on both sides of the upper outer shell 1 and the lower outer shell 101.

[0024] The upper outer shell 1 and the lower outer shell 101 are symmetrically arranged, and the arc-shaped opening 301 is connected to the square opening 102;

[0025] It should be noted that the cooling fan 3 can cool the circulating water inside the water tank 201 to ensure its cooling effect. Lubricating oil can be injected into the square port 102 through the arc-shaped port 301, which can both lubricate and cool the water.

[0026] Reference Figures 1-4 Multiple sets of heat sinks 4 are fixedly connected to both sides of the upper outer shell 1 and the lower outer shell 101, and the heat sinks 4 penetrate the cavity 2.

[0027] Both sides of the upper outer shell 1 and the lower outer shell 101 are fixedly connected to a connecting plate 401, and a fixing bolt 402 is threadedly connected to the top of the connecting plate 401.

[0028] It should be noted that the heat sink 4 can conduct heat from the cavity 2 to the outside of the upper outer shell 1 and the lower outer shell 101 for cooling. The upper outer shell 1 and the lower outer shell 101 are fixed and sealed by the connecting plate 401 and the fixing bolt 402.

[0029] Operation method: The upper outer shell 1 and the lower outer shell 101 are fixed and sealed by the connecting plate 401 and the fixing bolt 402. Lubricating oil is filled into the inner cavity of the square opening 102 through the arc-shaped opening 301, which can not only lubricate, but also cool it. The heat sink 4 can conduct the heat of the inner cavity of the cavity 2 to the outside of the upper outer shell 1 and the lower outer shell 101 for cooling.

[0030] Using the negative pressure pump 202 on the side wall of the water tank 201, the water inside the water tank 201 is directed to the first connecting pipe 204, and then to the cavity 2 provided in the upper outer shell 1 and the lower outer shell 101. At this time, the water inside the cavity 2 is directed to the water tank 201 through the second connecting pipe 206 and the water inlet pipe 205. This allows the water inside the cavity 2 of the upper outer shell 1 and the lower outer shell 101 to circulate, thereby enhancing the cooling and heat dissipation effect of the upper outer shell 1 and the lower outer shell 101. The cooling fan 3 can cool the circulating water inside the water tank 201 to ensure its cooling effect.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A heat dissipation housing for an automotive transmission, comprising an upper outer shell (1) and a lower outer shell (101), characterized in that: The upper outer shell (1) and the lower outer shell (101) are interlocked, and a square opening (102) is provided on each adjacent side of the upper outer shell (1) and the lower outer shell (101). The system also includes: The inner walls of the upper shell (1) and the lower shell (101) are both provided with cavities (2). A water tank (201) is fixedly connected to the top of the upper shell (1). A negative pressure pump (202) is fixedly connected to the side wall of the water tank (201). A water outlet pipe (203) is fixedly connected to the output end of the negative pressure pump (202). A first connecting pipe (204) is snapped into the end of the water outlet pipe (203). A water inlet pipe (205) is fixedly connected to the side wall of the water tank (201).

2. The automotive gearbox heat dissipation housing according to claim 1, characterized in that: The end of the water inlet pipe (205) is snapped with a second connecting pipe (206), and the first connecting pipe (204) and the second connecting pipe (206) are respectively connected to the cavity (2) of the upper shell (1) and the lower shell (101).

3. The automotive gearbox heat dissipation housing according to claim 2, characterized in that: The top of the water tank (201) is fixedly connected to a cooling fan (3), and arc-shaped openings (301) are provided on both sides of the upper outer shell (1) and the lower outer shell (101).

4. The automotive gearbox heat dissipation housing according to claim 3, characterized in that: The upper outer shell (1) and the lower outer shell (101) are symmetrically arranged, and the arc-shaped opening (301) is connected to the square opening (102).

5. The automotive gearbox heat dissipation housing according to claim 4, characterized in that: Multiple sets of heat sinks (4) are fixedly connected to both sides of the upper shell (1) and the lower shell (101), and the heat sinks (4) penetrate the cavity (2).

6. The automotive gearbox heat dissipation housing according to claim 5, characterized in that: Both sides of the upper outer shell (1) and the lower outer shell (101) are fixedly connected to a connecting plate (401), and a fixing bolt (402) is threadedly connected to the top of the connecting plate (401).