Electric shock protection device for electric welding machine

By designing a gear and rack structure and a belt drive system, the problem of uneven heat dissipation inside the welding machine is solved, achieving comprehensive airflow cooling and cleaning, and extending the service life and reliability of the welding machine.

CN224309791UActive Publication Date: 2026-06-02SHENZHEN KELAI TECHNOLOGY CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
SHENZHEN KELAI TECHNOLOGY CO LTD
Filing Date
2025-06-12
Publication Date
2026-06-02

AI Technical Summary

Technical Problem

The fans in existing welding machines cannot evenly blow air to cool different parts inside the device, resulting in large temperature differences, which damages the electric shock protection device and affects the reliability and stability of the welding machine.

Method used

The fan is driven by a gear and rack structure to change its position and direction, achieving comprehensive airflow and heat dissipation. A belt drive system drives a brush to clean the heat dissipation mesh, ensuring temperature uniformity and heat dissipation effect of all components.

Benefits of technology

This ensures uniform temperature distribution among all components inside the welding machine, prevents damage to the anti-electric shock device, extends equipment life, and guarantees normal operation.

✦ Generated by Eureka AI based on patent content.

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    Figure CN224309791U_ABST
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Abstract

The utility model relates to electric welding machine technical field discloses a kind of electric shock prevention electric welding machine protection devices, including machine body, the outer wall left side of machine body is fixedly connected with motor two, the output end of motor two is fixedly connected with fixed long rod, the outer wall equidistance fixed connection of fixed long rod has multiple gear, the inner wall left and right sides of machine body are fixedly connected with hollow long plate, the inside sliding connection of hollow long plate has rack, the rack is engaged with gear, the bottom of rack is fixedly connected with fixed plate.In the utility model, the rack moves to drive fan to move, realize the evenly overall blowing heat dissipation to the inside of machine body, to avoid the problem that the existing fan cannot blow and overall blowing heat dissipation to the different parts of the inside of device, the temperature environment difference of each component in electric welding machine is larger, causes the electric shock prevention device in electric welding machine to break down.
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Description

Technical Field

[0001] This utility model relates to the field of electric welding machine technology, and in particular to a protective device for electric shock welding machines. Background Technology

[0002] An electric welding machine is a welding device that uses electrical energy to locally melt the welding rod, welding wire, and workpiece through the high temperature heat generated by the welding arc, thus connecting the separate workpieces into a whole. Electric shock protection devices for electric welding machines are designed and technically designed to protect the welding machine and its related components from electric shock accidents that may occur during the use of the welding machine, so as to prevent users from coming into contact with live parts and suffering from leakage hazards.

[0003] Existing welding machines rely on natural air cooling, using ventilation holes and heat sinks on the outer casing to dissipate heat from the machine's interior to the surrounding environment through natural air convection. However, the airflow speed of natural convection is relatively slow, making it difficult to dissipate heat effectively and promptly. This leads to excessively high internal temperatures, affecting the machine's performance and lifespan. Current technology involves installing a fan, driven by a motor, which activates when the machine is operating, forcing airflow to accelerate heat dissipation. However, existing fans can only blow air in a single direction and cannot provide even cooling to different parts of the machine. This uneven cooling results in significant temperature differences between internal components, potentially damaging the anti-electric shock devices and ultimately affecting the overall reliability and stability of the welding machine, shortening its lifespan. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a protective device for welding machines to prevent electric shock. It aims to improve the problem that existing fans cannot blow air and cool different parts inside the device in a comprehensive manner, resulting in large temperature differences among the components inside the welding machine and causing damage to the electric shock protection device inside the welding machine.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a protective device for an electric shock welding machine, comprising a body, a second motor fixedly connected to the left side of the outer wall of the body, a fixed long rod fixedly connected to the output end of the second motor, a plurality of gears fixedly fixedly connected at equal intervals to the outer wall of the fixed long rod, hollow long plates fixedly connected to both the left and right sides of the inner wall of the body, a rack slidably connected inside the hollow long plate, the rack meshing with the gears, a fixed plate fixedly connected to the bottom of the rack, a fan fixedly connected to each adjacent side of the outer wall of the fixed plate, a battery fixedly connected to each side of the outer wall of the fixed plate away from the fan, an electric shock protector installed on the right side of the outer wall of the body, and a cleaning mechanism installed on the rear side of the outer wall of the body, the cleaning mechanism being used to clean dirt.

[0006] As a further description of the above technical solution:

[0007] The cleaning mechanism includes an inner sliding plate, which is installed on the rear side of the outer wall of the machine body. A motor is fixedly connected to the bottom right side of the inner sliding plate, and a pulley is fixedly connected to the output end of the motor. A pulley is rotatably connected to the top left side of the inner sliding plate. A connecting belt is installed on the outer wall of the pulley, and the pulley is connected to the pulley via the connecting belt. A sliding block is fixedly connected to the outer wall of the connecting belt. The bottom of the sliding block is slidably connected to the inside of the inner sliding plate, and a brush is fixedly connected to the top of the sliding block.

[0008] As a further description of the above technical solution:

[0009] A hollow box is fixedly connected to the middle of the top wall of the machine body, and a drawer is slidably connected inside the hollow box.

[0010] As a further description of the above technical solution:

[0011] A second handle is fixedly connected to the right side of the outer wall of the drawer, and an anti-slip sleeve is fixedly connected to the outer wall of the second handle.

[0012] As a further description of the above technical solution:

[0013] The top of the machine body is fixedly connected with multiple handles at equal intervals, and the outer wall of each handle is fixedly connected with an anti-slip pad.

[0014] As a further description of the above technical solution:

[0015] The bottom of the machine body is fixedly connected to four corners with support legs, and the bottom of each support leg is fixedly connected to a cushioning pad.

[0016] As a further description of the above technical solution:

[0017] A ventilation filter is installed on the rear side of the outer wall of the machine body.

[0018] As a further description of the above technical solution:

[0019] The outer wall of the machine body is threaded with a bolt on the right side, and a warning sign is threaded onto the outer wall of the bolt.

[0020] This utility model has the following beneficial effects:

[0021] 1. In this utility model, the starting motor drives the long rod at the output end and the gear on the outer wall to rotate. The gear meshes with the rack inside the hollow long plate, causing the rack to reciprocate within the long plate. The fixed plate moves with the rack, and the fan changes position and direction accordingly, achieving uniform and comprehensive airflow for heat dissipation inside the machine. This prevents excessive temperature differences inside the welding machine from damaging the electric shock protection device. It also avoids the problem that existing fans cannot blow air and provide comprehensive heat dissipation to different parts inside the device, resulting in large temperature differences among the components inside the welding machine and causing damage to the electric shock protection device.

[0022] 2. In this utility model, starting the motor causes the pulley to rotate, which in turn drives the connecting belt, causing the pulley to rotate. The sliding block moves with the belt, reciprocating linearly along the inner sliding groove plate. The brush moves synchronously with the sliding block, cleaning the dirt and dust on the heat dissipation mesh, ensuring the welding machine's heat dissipation and normal operation. This allows the auxiliary device to better perform its heat dissipation and electric shock prevention functions. Attached Figure Description

[0023] Figure 1 This is a front view of a protective device for an electric shock welding machine according to the present invention;

[0024] Figure 2 This is a perspective view of a protective device for an electric welding machine against electric shock proposed in this utility model;

[0025] Figure 3 This is a rear view of a protective device for an electric welding machine against electric shock proposed in this utility model;

[0026] Figure 4 This is a partial structural schematic diagram of a protective device for an electric shock welding machine proposed in this utility model;

[0027] Figure 5 This is a schematic diagram of the cleaning mechanism of a protective device for anti-electric shock welding machines proposed in this utility model.

[0028] Legend:

[0029] 1. Main body; 2. Cleaning mechanism; 201. Inner sliding groove long plate; 202. Motor 1; 203. Brush; 204. Belt pulley 1; 205. Sliding block; 206. Connecting belt; 207. Belt pulley 2; 3. Hollow box; 4. Anti-slip mat; 5. Handle 1; 6. Motor 2; 7. Buffer pad; 8. Support leg; 9. Drawer box; 10. Anti-slip sleeve; 11. Handle 2; 12. Electric shock protector; 13. Warning sign; 14. Bolt; 15. Ventilation filter; 16. Fixed long rod; 17. Gear; 18. Hollow long plate; 19. Battery; 20. Fixing plate; 21. Fan; 22. Rack. Detailed Implementation

[0030] 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.

[0031] Reference Figure 1 , Figure 2 and Figure 4 This utility model provides an embodiment of a protective device for an electric shock welding machine, comprising a body 1. A motor 6 is fixedly connected to the left side of the outer wall of the body 1. A fixed long rod 16 is fixedly connected to the output end of the motor 6. Multiple gears 17 are fixedly connected at equal intervals to the outer wall of the fixed long rod 16. Hollow long plates 18 are fixedly connected to both the left and right sides of the inner wall of the body 1. A rack 22 is slidably connected inside the hollow long plate 18 and meshes with the gears 17. A fixed plate 20 is fixedly connected to the bottom of the rack 22. Fans 21 are fixedly connected to adjacent sides of the outer wall of the fixed plate 20. Batteries 19 are fixedly connected to the outer wall of the fixed plate 20 on the side away from the fixed plate 20. An electric shock protector 12 is installed on the right side of the outer wall of the body 1. A cleaning mechanism 2 is installed on the rear side of the outer wall of the body 1. The cleaning mechanism 2 is used to clean dirt. A hollow box 3 is fixedly connected to the middle of the top wall of the body 1. A drawer 9 is slidably connected inside the hollow box 3. The drawer 9 can conveniently store tools for daily use and maintenance. A handle 11 is fixedly connected to the right side of the outer wall of the drawer 9. The handle 11 can conveniently open and close the drawer 9 for use. An anti-slip sleeve 10 is fixedly connected to the outer wall of the handle 11.

[0032] Specifically, the starting motor 6 drives the fixed long rod 16 at the output end to rotate together with the gear 17 on the outer wall. Since the gear 17 meshes with the rack 22 that is slidably connected inside the hollow long plate 18, the rotation of the gear 17 will drive the rack 22 to make linear reciprocating motion inside the hollow long plate 18. The fixed plate 20 fixedly connected to the bottom of the rack 22 will move with the movement of the rack 22. The fan 21 fixedly connected to the adjacent side of the outer wall of the fixed plate 20 will also change its position and blowing direction accordingly, thereby achieving uniform and comprehensive airflow and heat dissipation for different parts inside the machine body 1, avoiding damage to the electric shock protector 12 caused by excessive temperature differences between the components inside the welding machine. A hollow box 3 is fixedly connected to the middle of the top wall of the machine body 1. A drawer 9 is slidably connected inside the hollow box 3. The drawer 9 can facilitate the storage of tools for daily use and maintenance. A handle 11 is fixedly connected to the right side of the outer wall of the drawer 9. The handle 11 can facilitate the operation of the drawer 9 by the staff. An anti-slip sleeve 10 is fixedly connected to the outer wall of the handle 11.

[0033] Reference Figure 3 and Figure 5 The cleaning mechanism 2 includes an inner sliding plate 201, which is installed on the rear side of the outer wall of the body 1. A motor 202 is fixedly connected to the bottom right side of the inner sliding plate 201. A pulley 204 is fixedly connected to the output end of the motor 202. A pulley 207 is rotatably connected to the top left side of the inner sliding plate 201. A connecting belt 206 is installed on the outer wall of the pulley 207. The pulley 207 and the pulley 204 are connected by the connecting belt 206. A sliding block 205 is fixedly connected to the outer wall of the connecting belt 206. The bottom of the machine body 1 is slidably connected to the inner slide plate 201. A brush 203 is fixedly connected to the top of the sliding block 205. Multiple handles 5 are fixedly connected at equal intervals on the top of the machine body 1. The handles 5 facilitate the workers to move and transfer the machine body 1 for use. An anti-slip pad 4 is fixedly connected to the outer wall of the handles 5. Support feet 8 are fixedly connected to the bottom of the machine body 1 near the four corners. Buffer pads 7 are fixedly connected to the bottom of the support feet 8. The buffer pads 7 can absorb some of the vibration generated by the machine body 1 during operation, thereby reducing the damage caused by the vibration to the machine body 1.

[0034] Specifically, starting motor 202 drives pulley 204 to rotate. Since pulley 207 is connected to pulley 204 via connecting belt 206, the rotation of pulley 204 transmits power to pulley 207 via connecting belt 206, causing pulley 207 to rotate as well. The sliding block 205 on the outer wall of connecting belt 206 moves synchronously with connecting belt 206. Because the bottom of sliding block 205 is slidably connected to the inside of inner sliding groove plate 201, the inner sliding groove plate 201 provides a track for sliding block 205, allowing it to reciprocate linearly along the direction of the inner sliding groove plate 201. The brush 203 on the part moves synchronously with the sliding block 205. During the movement, the brush 203 will sweep away most of the dirt, dust and impurities on the heat dissipation mesh of the machine body 1, preventing the accumulation of dirt from affecting the heat dissipation effect and normal operation of the welding machine. Multiple handles 5 are fixedly connected at equal intervals on the top of the machine body 1. The handles 5 facilitate the workers to move and transfer the machine body 1 for use. Anti-slip pads 4 are fixedly connected to the outer wall of the handles 5. Support feet 8 are fixedly connected to the bottom of the machine body 1 near the four corners. Buffer pads 7 are fixedly connected to the bottom of the support feet 8. The buffer pads 7 can absorb some of the vibration generated by the machine body 1 during operation, thereby reducing the damage caused by vibration to the machine body 1.

[0035] Reference Figure 1 , Figure 2 and Figure 3 A ventilation filter 15 is installed on the rear side of the outer wall of the machine body 1. The ventilation filter 15 can promote the air circulation and heat dissipation inside the machine body 1. A bolt 14 is threaded on the right side of the outer wall of the machine body 1. A warning sign 13 is threaded on the outer wall of the bolt 14. The warning sign 13 can remind the staff of the precautions when using the machine body 1, thereby reducing the probability of accidents.

[0036] Specifically, a ventilation filter 15 is installed on the rear side of the outer wall of the machine body 1. The ventilation filter 15 can promote air circulation and heat dissipation inside the machine body 1. A bolt 14 is threadedly connected to the right side of the outer wall of the machine body 1. A warning sign 13 is threadedly connected to the outer wall of the bolt 14. The warning sign 13 can remind the staff of the precautions when using the machine body 1, thereby reducing the probability of accidents.

[0037] Working principle: The starting motor 6 drives the fixed long rod 16 at the output end to rotate together with the gear 17 on the outer wall. Since the gear 17 meshes with the rack 22 that is slidably connected inside the hollow long plate 18, the rotation of the gear 17 will drive the rack 22 to make linear reciprocating motion inside the hollow long plate 18. The fixed plate 20 fixedly connected to the bottom of the rack 22 will move with the movement of the rack 22. The fan 21 fixedly connected to the adjacent side of the outer wall of the fixed plate 20 will also change its position and blowing direction accordingly, thereby achieving uniform and comprehensive airflow and heat dissipation for different parts inside the machine body 1. This avoids damage to the electric shock protection device 12 caused by excessive temperature differences between the components inside the welding machine. This also avoids the problem that the existing fan 21 cannot blow air and dissipate heat in different parts inside the device, resulting in large temperature differences between the components inside the welding machine and causing damage to the electric shock protection device inside the welding machine.

[0038] The motor 202 starts the pulley 204 to rotate. Since the pulley 207 is connected to the pulley 204 via the connecting belt 206, the rotation of the pulley 204 transmits power to the pulley 207 via the connecting belt 206, causing the pulley 207 to rotate as well. The sliding block 205 on the outer wall of the connecting belt 206 moves synchronously with the connecting belt 206. Since the bottom of the sliding block 205 is slidably connected to the inside of the inner slide groove plate 201, the inner slide groove plate 201 provides a track for the sliding block 205, so that the sliding block 205 can only move in a straight line along the direction of the inner slide groove plate 201. The brush 203 on the top of the sliding block 205 moves synchronously with the sliding block 205. During the movement, the brush 203 cleans most of the dirt, dust and impurities on the heat dissipation mesh of the machine body 1, preventing dirt accumulation from affecting the heat dissipation effect and normal operation of the welding machine, thereby helping the overall device to better perform its heat dissipation and anti-electric shock functions.

[0039] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A protective device for an electric shock welding machine, comprising a body (1), characterized in that: A motor (6) is fixedly connected to the left side of the outer wall of the body (1). A fixed long rod (16) is fixedly connected to the output end of the motor (6). Multiple gears (17) are fixedly connected at equal intervals to the outer wall of the fixed long rod (16). Hollow long plates (18) are fixedly connected to both the left and right sides of the inner wall of the body (1). A rack (22) is slidably connected inside the hollow long plate (18). The rack (22) meshes with the gears (17). A fixed plate (20) is fixedly connected to the bottom of the rack (22). A fan (21) is fixedly connected to the adjacent side of the outer wall of the fixed plate (20). A battery (19) is fixedly connected to the side away from the outer wall of the fixed plate (20). An electric shock protector (12) is installed on the right side of the outer wall of the body (1). A cleaning mechanism (2) is installed on the rear side of the outer wall of the body (1). The cleaning mechanism (2) is used to clean dirt.

2. The electric shock protection device for welding machines according to claim 1, characterized in that: The cleaning mechanism (2) includes an inner sliding plate (201), which is installed on the rear side of the outer wall of the machine body (1). A motor (202) is fixedly connected to the bottom right side of the inner sliding plate (201). A pulley (204) is fixedly connected to the output end of the motor (202). A pulley (207) is rotatably connected to the top left side of the inner sliding plate (201). A connecting belt (206) is installed on the outer wall of the pulley (207). The pulley (207) and the pulley (204) are connected by the connecting belt (206). A sliding block (205) is fixedly connected to the outer wall of the connecting belt (206). The bottom of the sliding block (205) is slidably connected to the inside of the inner sliding plate (201). A brush (203) is fixedly connected to the top of the sliding block (205).

3. The electric shock protection device for welding machines according to claim 1, characterized in that: A hollow box (3) is fixedly connected to the middle of the top wall of the body (1), and a drawer (9) is slidably connected inside the hollow box (3).

4. The electric shock protection device for welding machines according to claim 3, characterized in that: A second handle (11) is fixedly connected to the right side of the outer wall of the drawer (9), and an anti-slip sleeve (10) is fixedly connected to the outer wall of the second handle (11).

5. The electric shock protection device for welding machines according to claim 1, characterized in that: The top of the body (1) is fixedly connected with multiple handles (5) at equal intervals, and the outer wall of the handles (5) is fixedly connected with anti-slip pads (4).

6. The electric shock protection device for welding machines according to claim 1, characterized in that: The bottom of the body (1) is fixedly connected to four corners with support legs (8), and the bottom of the support legs (8) is fixedly connected to cushioning pads (7).

7. The electric shock protection device for welding machines according to claim 1, characterized in that: A ventilation filter (15) is installed on the rear side of the outer wall of the body (1).

8. The electric shock protection device for welding machines according to claim 1, characterized in that: The outer wall of the body (1) is threaded with a bolt (14), and the outer wall of the bolt (14) is threaded with a warning sign (13).