Handheld electric grinder structure

Abstract

The utility model relates to the technical field of handheld electric grinding machines, and discloses a handheld electric grinding machine structure which comprises a shell, a protective cover and three bearings, a motor is fixedly arranged on one side of the shell, the output end of the motor penetrates through the shell to the inside and is fixedly connected with a fixed rotating shaft, one end of the rotating shaft is fixedly connected with a motor transmission head, and the other end of the rotating shaft is fixedly connected with the protective cover. A transmission shaft is fixedly arranged in the motor transmission head in a sleeved mode, a connecting base is fixedly connected to one side of the transmission shaft, a rotating shaft is fixedly connected to one side of the connecting base, and a plug sleeve is fixedly connected to one end of the rotating shaft. According to the polishing device, the vibration amplitude generated when the rotating shaft rotates can be effectively reduced through the arranged damping structure, so that the shaking problem occurring when the polishing device is used is relieved, the polishing device has better stability, meanwhile, the polishing head can be better protected through the arranged protective cover which can stabilize the fixing structure, and the polishing effect is better. And the usability is better.

Description

Technical Field

[0001] The utility model relates to the technical field of handheld electric grinders, in particular to a handheld electric grinder structure. Background Art

[0002] A handheld electric grinder is a device used for grinding. It is a type of nail grinder and is widely used in daily life.

[0003] However, when the existing device is used, the motor rotates for a long time, and the high-speed rotation of the rotating shaft connected to it will drive the entire device to vibrate, which makes the user feel uncomfortable. In addition, the protective cover of the existing device is directly mounted on the shell, which is not firm and easy to fall off. Therefore, those skilled in the art provide a handheld electric grinder structure to solve the problems raised in the above background technology. Utility Model Content

[0004] The purpose of the present utility model is to solve the shortcomings existing in the prior art, and a handheld electric grinder structure is proposed. The vibration amplitude of the rotating shaft during rotation can be effectively reduced by the provided shock-absorbing structure, thereby reducing the shaking problem of the device during use, and having better stability. At the same time, the protective cover provided can stabilize the fixed structure, thereby achieving better protection for the grinding head and having better usability.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A handheld electric grinder structure, comprising a shell, a protective cover and three bearings, a motor is fixedly arranged on one side of the shell, an output end of the motor passes through the shell to the inside and is fixedly connected to a fixed rotating shaft, one end of the rotating shaft is fixedly connected to a motor transmission head, a transmission shaft is fixedly sleeved inside the motor transmission head, one side of the transmission shaft is fixedly connected to a connecting seat, one side of the connecting seat is fixedly connected to a rotating shaft, one end of the rotating shaft is fixedly connected to a plug sleeve, a grinding head is clamped inside the plug sleeve, a limit sleeve is fixedly sleeved on the outer wall of the rotating shaft, a plurality of mounting grooves are opened inside the shell, a plurality of damping rods are fixedly arranged inside the plurality of mounting grooves, a plurality of damping rods are movably sleeved with shock-absorbing springs on their outer walls, the lower ends of the plurality of damping rods are respectively fixedly connected to corresponding bearings, and the limit sleeves are fixedly sleeved in three bearings;

[0007] One side of the protective cover is fixedly connected with a limit clamp ring, one side of the shell is provided with a limit clamp groove, the limit clamp ring is clamped in the limit clamp groove, the inner sleeve of the limit clamp groove is provided with an annular negative magnet, one side of the limit clamp ring is provided with an auxiliary groove, the inner part of the auxiliary groove is fixedly connected with an annular positive magnet, and the annular positive magnet is magnetically attracted to the annular negative magnet;

[0008] Through the above technical scheme, when in use, the motor drives the rotating shaft to rotate, the transmission shaft rotates synchronously and drives the rotating shaft to rotate, thereby achieving the purpose of rotating the grinding head. When the rotating shaft rotates, the limit sleeve rotates synchronously, and under the action of the damping rod and the shock-absorbing spring, a better shock-absorbing effect on the bearing can be achieved, thereby effectively avoiding the problem of device vibration caused by the high-speed rotation of the rotating shaft in the bearing, thereby achieving better stability and usability. After use, the limit clamping ring is engaged and set in the limit clamping groove to make the outer shell and the protective cover sealed, thereby achieving better protection for the grinding head. At the same time, the magnet setting of the annular positive magnet and the annular negative magnet can improve the connectivity between the protective cover and the outer shell, making the connection between the two more compact and firm, effectively avoiding the problem of easy falling off of the protective cover due to the loose connection between the protective cover and the outer shell, thereby achieving better usability and protection.

[0009] Furthermore, a fixed sleeve is fixedly sleeved on one side of the inner part of the shell, the rotating shaft is movably sleeved in the fixed sleeve, and a transmission spring is fixedly connected between the fixed sleeve and the connecting seat;

[0010] Through the above technical solution, a better buffering effect can be achieved by setting the transmission spring.

[0011] Furthermore, a protective pad is fixedly connected to an inner wall of one side of the protective cover, the protective pad is arranged in contact with the grinding head, and the protective pad is made of sponge material;

[0012] Through the above technical solution, the protective pad can provide better protection for the grinding head.

[0013] Furthermore, annular sliders are fixedly sleeved on both sides of the outer wall of the limiting sleeve, annular slide grooves are opened on both sides of the middle part of the inner wall of the shell, and the two annular sliders are slidably arranged in the corresponding annular slide grooves respectively;

[0014] Through the above technical solution, the sliding arrangement of the annular slider in the annular slide groove can achieve a better limiting effect on the limiting sleeve, thereby achieving the purpose of stable rotation.

[0015] Furthermore, the plug sleeve is movably arranged inside the housing;

[0016] Through the above technical solution, by arranging the plug sleeve inside the shell, better protection can be achieved, and it can also be ensured that only the grinding head is located outside the device, thereby achieving the purpose of convenient grinding.

[0017] Furthermore, a switch button is fixedly arranged at the center of the front end surface of the housing;

[0018] Through the above technical solution, the purpose of convenient use can be achieved by setting the switch button.

[0019] Furthermore, the shock absorbing spring is made of carbon steel;

[0020] Through the above technical solution, the purpose of high-strength use can be achieved by using the shock-absorbing spring made of carbon steel material.

[0021] The utility model has the following beneficial effects:

[0022] 1. The utility model proposes a hand-held electric grinder structure. When in use, the motor drives the rotating shaft to rotate, the transmission shaft rotates synchronously and drives the rotating shaft to rotate, thereby achieving the purpose of rotating the grinding head. When the rotating shaft rotates, the limit sleeve rotates synchronously, and under the action of the damping rod and the shock-absorbing spring, a better shock-absorbing effect on the bearing can be achieved, thereby effectively avoiding the problem of device vibration caused by the high-speed rotation of the rotating shaft in the bearing, thereby achieving better stability and usability, and having better practicality and convenience.

[0023] 2. The utility model proposes a hand-held electric grinder structure. After use, a limit clamp ring is engaged in the limit clamp groove to make the outer shell and the protective cover sealed, thereby achieving better protection for the grinding head. At the same time, the magnet setting of the annular positive magnet and the annular negative magnet can improve the connectivity between the protective cover and the outer shell, making the connection between the two more compact and firm, effectively avoiding the problem of the protective cover falling off easily due to the loose connection between the protective cover and the outer shell, thereby achieving better usability and protection.

[0024] 3. The utility model proposes a handheld electric grinder structure, which can effectively reduce the amplitude of the rotating shaft during rotation through the provided shock-absorbing structure, thereby reducing the shaking problem of the device during use, and has better stability. At the same time, the provided protective cover can stabilize the fixed structure to achieve better protection for the grinding head, and has better usability. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is an axonometric schematic diagram of a handheld electric grinder structure proposed by the utility model;

[0026] Figure 2 A front cross-sectional schematic diagram of a handheld electric grinder structure proposed by the utility model;

[0027] Figure 3 for Figure 2 An enlarged schematic diagram of the structure at A;

[0028] Figure 4 for Figure 2 An enlarged schematic diagram of the structure at B;

[0029] Figure 5 This is a diagram of the structure of a handheld electric grinder proposed by the utility model.

[0030] Legend:

[0031] 1. Housing; 2. Protective cover; 3. Motor; 4. Rotating shaft; 5. Fixed sleeve; 6. Motor transmission head; 7. Transmission shaft; 8. Transmission spring; 9. Connecting seat; 10. Rotating shaft; 11. Plug sleeve; 12. Grinding head; 13. Limit sleeve; 14. Annular slider; 15. Annular slide groove; 16. Mounting groove; 17. Damping rod; 18. Shock-absorbing spring; 19. Bearing; 20. Limiting slot; 21. Limiting snap ring; 22. Auxiliary slot; 23. Annular positive magnet; 24. Annular negative magnet; 25. Switch button; 26. Protective pad. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the specific implementation of the utility model to clearly and completely describe the technical solutions in the specific implementation of the utility model. Obviously, the specific implementation described is only a part of the specific implementation of the utility model, not all of the specific implementation. Based on the specific implementation of the utility model, all other specific implementations obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0033] Reference Figure 1-5, a specific implementation mode provided by the utility model: a hand-held electric grinder structure, including a shell 1, a protective cover 2 and three bearings 19, a switch button 25 is fixedly arranged at the center of the front end surface of the shell 1, and the purpose of convenient use can be achieved by setting the switch button 25, a motor 3 is fixedly arranged on one side of the shell 1, the output end of the motor 3 passes through the shell 1 to the inside and is fixedly connected with a fixed rotating shaft 4, one end of the rotating shaft 4 is fixedly connected with a motor transmission head 6, the internal fixed sleeve of the motor transmission head 6 is provided with a transmission shaft 7, one side of the transmission shaft 7 is fixedly connected with a connecting seat 9, a fixed sleeve 5 is fixedly arranged on one side of the inner side of the shell 1, the rotating shaft 4 is movably sleeved in the fixed sleeve 5, a transmission spring 8 is fixedly connected between the fixed sleeve 5 and the connecting seat 9, and a better buffering effect can be achieved by setting the transmission spring 8, a rotating shaft 10 is fixedly connected to one side of the connecting seat 9, one end of the rotating shaft 10 is fixedly connected with a plug sleeve 11, and the plug sleeve 1 1 is provided with a grinding head 12 in an internal engagement, a limit sleeve 13 is fixedly sleeved on the outer wall of the rotating shaft 10, a plurality of mounting grooves 16 are provided inside the shell 1, and damping rods 17 are fixedly provided inside the plurality of mounting grooves 16, and the outer walls of the plurality of damping rods 17 are movably sleeved with shock absorbing springs 18, and the shock absorbing springs 18 are made of carbon steel. The purpose of high-strength use can be achieved by using the shock absorbing springs 18 made of carbon steel. The lower ends of the plurality of damping rods 17 are respectively fixedly connected to the corresponding bearings 19, and the limit sleeves 13 are fixedly sleeved in the three bearings 19. An annular slider 14 is fixedly sleeved on both sides of the outer wall of the limit sleeve 13, and an annular groove 15 is provided on both sides of the middle part of the inner wall of the shell 1, and the two annular sliders 14 are respectively slidably arranged in the corresponding annular grooves 15, and the sliding setting of the annular slider 14 in the annular groove 15 can achieve a better limiting effect on the limit sleeve 13, thereby achieving the purpose of stable rotation;

[0034] The plug sleeve 11 is movably arranged inside the shell 1. By arranging the plug sleeve 11 inside the shell 1, better protection can be achieved, and it can also be ensured that only the grinding head 12 is located outside the device, thereby achieving the purpose of convenient grinding. One side of the protective cover 2 is fixedly connected to a limiting clamping ring 21, and one side of the shell 1 is provided with a limiting clamping groove 20. The limiting clamping ring 21 is clamped and arranged in the limiting clamping groove 20. The internal fixed sleeve of the limiting clamping groove 20 is provided with an annular negative magnet 24. One side of the limiting clamping ring 21 is provided with an auxiliary groove 22. The interior of the auxiliary groove 22 is fixedly connected with an annular positive magnet 23. The annular positive magnet 23 and the annular negative magnet 24 are magnetically attracted. A protective pad 26 is fixedly connected to the inner wall of one side of the protective cover 2. The protective pad 26 is arranged in contact with the grinding head 12. The protective pad 26 is made of sponge material. By setting the protective pad 26, better protection of the grinding head 12 can be achieved.

[0035] Working principle: When in use, the motor 3 drives the rotating shaft 4 to rotate, the transmission shaft 7 rotates synchronously and drives the rotating shaft 10 to rotate, thereby achieving the purpose of rotating the grinding head 12. When the rotating shaft 10 rotates, the limiting sleeve 13 rotates synchronously, and under the action of the damping rod 17 and the shock-absorbing spring 18, a better shock-absorbing effect on the bearing 19 can be achieved, thereby effectively avoiding the problem of device vibration caused by the high-speed rotation of the rotating shaft 10 in the bearing 19, thereby achieving better stability and usability. After use, the limiting clamping ring 21 is engaged and set in the limiting clamping groove 20, so that the outer shell 1 and the protective cover 2 are sealed and connected, thereby achieving a better protection for the grinding head 12. At the same time, the magnet setting of the annular positive magnet 23 and the annular negative magnet 24 can improve the connectivity between the protective cover 2 and the outer shell 1, making the connection between the two more compact and firm, effectively avoiding the problem of easy falling off of the protective cover 2 due to the loose connection between the protective cover 2 and the outer shell 1.

[0036] Finally, it should be noted that the above is only a preferred specific implementation method of the present utility model and is not used to limit the present utility model. Although the present utility model is described in detail with reference to the aforementioned specific implementation methods, for those skilled in the art, they can still modify the technical solutions recorded in the aforementioned specific implementation methods, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A handheld electric grinder structure, comprising a housing (1), a protective cover (2) and three bearings (19), characterized in that: A motor (3) is fixedly arranged on one side of the housing (1); an output end of the motor (3) passes through the housing (1) to the inside and is fixedly connected to a fixed rotating shaft (4); one end of the rotating shaft (4) is fixedly connected to a motor transmission head (6); a transmission shaft (7) is fixedly sleeved inside the motor transmission head (6); one side of the transmission shaft (7) is fixedly connected to a connecting seat (9); one side of the connecting seat (9) is fixedly connected to a rotating shaft (10); one end of the rotating shaft (10) is fixedly connected to a plug sleeve (11); the plug sleeve (11) is provided with a grinding head (12) in a snap-fitting manner, a limiting sleeve (13) is fixedly sleeved on the outer wall of the rotating shaft (10), a plurality of mounting grooves (16) are provided inside the housing (1), a damping rod (17) is fixedly provided inside the plurality of mounting grooves (16), a shock absorbing spring (18) is movably sleeved on the outer walls of the plurality of damping rods (17), the lower ends of the plurality of damping rods (17) are respectively fixedly connected to corresponding bearings (19), and the limiting sleeve (13) is fixedly sleeved inside three bearings (19); A limiting snap ring (21) is fixedly connected to one side of the protective cover (2); a limiting snap groove (20) is provided on one side of the housing (1); the limiting snap ring (21) is snap-fitted in the limiting snap groove (20); an annular negative magnet (24) is fixedly sleeved inside the limiting snap groove (20); an auxiliary groove (22) is provided on one side of the limiting snap ring (21); an annular positive magnet (23) is fixedly connected inside the auxiliary groove (22); the annular positive magnet (23) and the annular negative magnet (24) are magnetically attracted to each other.

2. A handheld electric grinder structure according to claim 1, characterized in that: A fixed sleeve (5) is fixedly sleeved on one side of the inner part of the housing (1), the rotating shaft (4) is movably sleeved in the fixed sleeve (5), and a transmission spring (8) is fixedly connected between the fixed sleeve (5) and the connecting seat (9).

3. A handheld electric grinder structure according to claim 1, characterized in that: A protection pad (26) is fixedly connected to an inner wall of one side of the protection cover (2), the protection pad (26) is arranged in contact with the grinding head (12), and the protection pad (26) is made of sponge material.

4. A handheld electric grinder structure according to claim 1, characterized in that: Annular slide blocks (14) are fixedly sleeved on both sides of the outer wall of the limiting sleeve (13), and annular slide grooves (15) are opened on both sides of the middle part of the inner wall of the shell (1), and the two annular slide blocks (14) are respectively slidably arranged in the corresponding annular slide grooves (15).

5. The handheld electric grinder structure according to claim 1, characterized in that: The plug sleeve (11) is movably arranged inside the housing (1).

6. A handheld electric grinder structure according to claim 1, characterized in that: A switch button (25) is fixedly arranged at the center of the front end surface of the housing (1).

7. A handheld electric grinder structure according to claim 1, characterized in that: The shock absorbing spring (18) is made of carbon steel.

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