Handheld lithium battery angle grinder

Abstract

The utility model belongs to the technical field of angle grinders, and particularly relates to a handheld lithium battery angle grinder which comprises an angle grinder body. A grinding disc is mounted at the bottom of the angle grinder main body; a first shell is fixedly connected to the bottom of the angle grinder main body; the inner wall of the first shell is rotationally connected with a rotating fan; the output end of the rotating fan is engaged with an inner toothed belt, and the other end of the inner toothed belt is engaged with the output end of the grinding disc; the inner wall of the first shell is fixedly connected with a first guide cylinder; the end of the first guide cylinder is fixedly connected with a second guide cylinder, and the end of the second guide cylinder is located on the outer wall of the first shell. And in cooperation with the air flow exhausted from the inner wall area of the exhaust hole, the problem that after a worker holds the middle of the angle grinder body for a long time, much sweat is generated, the hand slips in the angle grinder body operation process, and consequently follow-up control over the grinding disc is affected can be solved, and potential safety hazards generated when the angle grinder body is used are reduced.

Description

Technical Field

[0001] This utility model belongs to the field of angle grinder technology, specifically a handheld lithium-ion angle grinder. Background Technology

[0002] An angle grinder, also known as a grinding machine or disc grinder, is a tool that uses a high-speed rotating thin grinding wheel, rubber wheel, wire wheel, etc., to grind, cut, remove rust, and polish materials. It is widely used in metal processing, stone cutting, wood carving, and many other fields.

[0003] A lithium-ion angle grinder is a type of angle grinder that uses lithium batteries as its power source. Its biggest feature is portability. Because it uses lithium batteries as its power source, users do not need to worry about the constraints of power cords and can use it anytime, anywhere.

[0004] Through long-term observation, it has been found that existing handheld angle grinders tend to cause excessive sweating on the hands after prolonged use. This sweat can make the operator's hands slippery when holding the grinder handle, reducing control over the grinder and increasing the risk of operational errors. Therefore, a handheld lithium-ion battery angle grinder is proposed to address the above issues. Utility Model Content

[0005] In order to overcome the shortcomings of the prior art and solve at least one of the technical problems mentioned in the background art, this utility model proposes a handheld lithium battery angle grinder.

[0006] The technical solution adopted by this utility model to solve its technical problem is as follows: A handheld lithium-ion angle grinder of this utility model includes an angle grinder body; a grinding disc is installed at the bottom of the angle grinder body; a first housing is fixedly connected to the bottom of the angle grinder body; a rotating fan is rotatably connected to the inner wall of the first housing; an internal toothed belt is engaged at the output end of the rotating fan, and the other end of the internal toothed belt is engaged with the output end of the grinding disc; a first guide cylinder is fixedly connected to the inner wall of the first housing; a second guide cylinder is fixedly connected to the end of the first guide cylinder, and the end of the second guide cylinder is located on the outer wall of the first housing; the first guide cylinder and the second guide cylinder are connected; multiple sets of exhaust holes are opened at the end of the second guide cylinder.

[0007] Preferably, two sets of second housings are fixedly connected to the inner wall of the first housing; a spring rod is fixedly connected to the inner wall of the second housing; a connecting plate is fixedly connected to the output end of the spring rod; a pull ring is fixedly connected to the bottom of the connecting plate; a discharge trough is formed in the middle of the first housing and the first guide cylinder; a first rotating plate is rotatably connected to the inner wall of the first housing, and the first rotating plate is located on the inner wall of the discharge trough; the middle of the first rotating plate is inclined.

[0008] Preferably, a support member is fixedly connected to the inner wall of the first guide cylinder; a second rotating plate is rotatably connected to the middle of the support member; a counterweight is fixedly connected to the end of the second rotating plate; and an air guide plate is fixedly connected to the middle of the second rotating plate, and the air guide plate is inclined inward.

[0009] Preferably, a frame plate is fixedly connected to the end of the first guide cylinder; a metal mesh is fixedly connected to the inner wall of the frame plate, and the metal mesh and the frame plate are arranged in an arc shape.

[0010] Preferably, a patch is fixed to the side wall of the first housing; a rubber sheet is fixed to the end of the patch, and multiple sets of rubber sheets are arranged near the vent.

[0011] Preferably, a counterweight strip is fixed to the inner wall of the first rotating plate.

[0012] Preferably, a pad is fixedly connected to the middle of the counterweight.

[0013] The beneficial effects of this utility model are:

[0014] This utility model provides a handheld lithium-ion angle grinder. By cooperating with the airflow discharged from the inner wall area of ​​the exhaust port, it can reduce the problem of hand slippage caused by excessive sweating when the operator holds the middle of the angle grinder body for a long time, which would affect the subsequent control of the grinding disc and reduce the safety hazards when using the angle grinder body.

[0015] This utility model provides a handheld lithium-ion angle grinder. With the help of a connecting plate, it can improve the convenience of subsequent cleaning of the inner wall of the first guide cylinder, reduce the trouble of disassembling and maintaining the sealed first shell, and prevent the problem of airflow being affected by the blockage of the inner walls of the first and second guide cylinders. Furthermore, under the action of the tilted first rotating plate, it can further speed up the subsequent opening of the connecting plate and improve the accuracy of cleaning impurities. Attached Figure Description

[0016] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0018] Figure 2 This is a schematic diagram of the first shell structure in this utility model;

[0019] Figure 3 for Figure 2 Enlarged view of point A;

[0020] Figure 4 This is a schematic diagram of the second guide tube structure in this utility model;

[0021] Figure 5 This is a schematic diagram of the air guide plate structure in this utility model;

[0022] Figure 6 This is a schematic diagram of the connecting plate structure in this utility model.

[0023] Legend:

[0024] 1. Angle grinder body; 11. Grinding disc; 12. First housing; 13. Rotary fan; 14. Internal toothed belt; 15. First guide cylinder; 16. Second guide cylinder; 17. Exhaust port; 2. Second housing; 21. Spring rod; 22. Connecting plate; 23. Pull ring; 24. Discharge chute; 25. First rotating plate; 3. Support component; 31. Second rotating plate; 32. Counterweight; 33. Air guide plate; 4. Frame plate; 41. Metal mesh; 5. Patch; 51. Rubber sheet; 6. Counterweight strip; 7. Gasket. Detailed Implementation

[0025] 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 skilled in the art without creative effort are within the protection scope of the present utility model.

[0026] Specific implementation examples are given below.

[0027] like Figure 1-6As shown, a handheld lithium-ion angle grinder includes a grinder body 1; a grinding disc 11 is mounted on the bottom of the grinder body 1; a first housing 12 is fixedly connected to the bottom of the grinder body 1; a rotating fan 13 is rotatably connected to the inner wall of the first housing 12; an internal toothed belt 14 is engaged at the output end of the rotating fan 13, and the other end of the internal toothed belt 14 is engaged with the grinding disc 11 at its output end; a first guide cylinder 15 is fixedly connected to the inner wall of the first housing 12; a second guide cylinder 16 is fixedly connected to the end of the first guide cylinder 15, and the end of the second guide cylinder 16 is located on the outer wall of the first housing 12; the first guide cylinder 15 and the second guide cylinder 16 are connected; multiple sets of exhaust holes 17 are opened at the end of the second guide cylinder 16; during operation, the operator needs to assemble the grinder body 1 with an external lithium battery pack and then start the grinder. The switch in the middle of the main body 1 allows the grinding disc 11 to rotate quickly. A first housing 12 is provided at the bottom of the angle grinder main body 1. With the help of the internal toothed belt 14, the grinding disc 11 rotates while simultaneously driving the rotating fan 13 to rotate on the inner wall of the first housing 12. The rapidly rotating fan 13 generates airflow, which passes through the first guide tube 15 and the second guide tube 16 and is discharged from the end of the exhaust port 17. This airflow then contacts the hand of the operator, increasing airflow near the hand. This step, combined with the airflow discharged from the inner wall area of ​​the exhaust port 17, can reduce the risk of hand slippage caused by prolonged gripping of the middle of the angle grinder main body 1 and excessive sweating, which could affect subsequent control of the grinding disc 11 and reduce safety hazards when using the angle grinder main body 1.

[0028] like Figure 1-6As shown, two sets of second housings 2 are fixedly connected to the inner wall of the first housing 12; a spring rod 21 is fixedly connected to the inner wall of the second housing 2; a connecting plate 22 is fixedly connected to the output end of the spring rod 21; a pull ring 23 is fixedly connected to the bottom of the connecting plate 22; a discharge groove 24 is formed in the middle of the first housing 12 and the first guide cylinder 15; a first rotating plate 25 is rotatably connected to the inner wall of the first housing 12, and the first rotating plate 25 is located on the inner wall of the discharge groove 24; the middle of the first rotating plate 25 is inclined; during operation, since two sets of connecting plates 22 are provided on the inner wall of the first housing 12, when impurities in the airflow come into contact with the inner walls of the first guide cylinder 15 and the second guide cylinder 16 and fall down, they can directly approach the position of the first rotating plate 25. When removing impurities, the middle of the pull ring 23 can be pulled down, and the spring rod 23 can be released. The output end of rod 21 is extended, causing the connecting plate 22 to detach from the bottom wall area of ​​the first housing 12. The first rotating plate 25 continues to tilt downward under the action of gravity, and then the impurities accumulated in the middle roll to the outside. After the pull ring 23 is released, the connecting plate 22 can be reset in position with the spring rod 21. This step, together with the connecting plate 22, can improve the convenience of subsequent cleaning of the inner wall of the first guide cylinder 15 by the staff, reduce the trouble of disassembling and maintaining the closed first housing 12, and prevent the problem of the airflow being blocked by the inner walls of the first guide cylinder 15 and the second guide cylinder 16, thus affecting the airflow through the inner walls of the first guide cylinder 15 and the second guide cylinder 16. Under the action of the tilted first rotating plate 25, the subsequent pulling open of the connecting plate 22 and the cleaning accuracy of impurities are further accelerated.

[0029] like Figure 1-6 As shown, a support member 3 is fixedly connected to the inner wall of the first guide cylinder 15; a second rotating plate 31 is rotatably connected to the middle of the support member 3; a counterweight 32 is fixedly connected to the end of the second rotating plate 31; a guide plate 33 is fixedly connected to the middle of the second rotating plate 31, and the guide plate 33 is inclined inward; during operation, the support member 3, provided on the inner wall of the first guide cylinder 15, can support the second rotating plate 31 as a whole, and when airflow passes through the inner wall of the first guide cylinder 15, the airflow can directly interact with the inner wall. The air guide plate 33 is brought into contact with the air guide plate 33 and the second rotating plate 31 is pushed inward to rotate until the counterweight 32 approaches and impacts the inner wall of the first guide cylinder 15, generating vibration. This step, combined with the impact of the counterweight 32, can further accelerate the falling off of large impurities attached to the exhaust hole 17 and the inner wall of the first guide cylinder 15 and transfer them to the vicinity of the first rotating plate 25 for subsequent cleaning. At the same time, the frequency of the subsequent impact of the counterweight 32 can be increased by the unfolding air guide plate 33.

[0030] like Figure 1-6As shown, a frame plate 4 is fixedly connected to the end of the first guide cylinder 15; a metal mesh 41 is fixedly connected to the inner wall of the frame plate 4, and the metal mesh 41 and the frame plate 4 are arranged in an arc shape; during operation, the arc-shaped frame plate 4 at the end of the first guide cylinder 15 can support the metal mesh 41, and the inner wall of the metal mesh 41 can block impurities falling from the first guide cylinder 15. Under the action of the metal mesh 41, this step can reduce the problem of greater resistance and wear when the impurities fall from the inner wall of the first guide cylinder 15 and are transferred to the rotating fan 13. Furthermore, due to its arc shape, it is difficult for impurities to adhere to its inner wall.

[0031] like Figure 1-6 As shown, a patch 5 is fixed to the side wall of the first housing 12; a rubber sheet 51 is fixed to the end of the patch 5, and multiple sets of rubber sheets 51 are set near the exhaust port 17; during operation, a support member 3 is provided on the side wall of the first housing 12 to support the multiple sets of rubber sheets 51. When no airflow is discharged from the inner wall of the exhaust port 17, the multiple sets of rubber sheets 51 will bend downward under the action of gravity and block the designated exhaust port 17. This step, together with the rubber sheets 51, allows the subsequent staff to more intuitively observe the size of the airflow on the inner wall of the exhaust port 17. At the same time, the closed rubber sheets 51 can reduce the entry of external impurities from the inner wall of the exhaust port 17 when the angle grinder body 1 is placed.

[0032] like Figure 1-6 As shown, a counterweight 6 is fixed to the inner wall of the first rotating plate 25. During operation, the counterweight 6 is provided on the inner wall of the first rotating plate 25, and the connecting plate 22 can continue to press down the first rotating plate 25 when it is opened, in conjunction with the counterweight 6. This step, under the action of the counterweight 6, can improve the stability of the first rotating plate 25 when it rotates downward and reduce the phenomenon of jamming.

[0033] like Figure 1-6 As shown, a pad 7 is fixedly connected to the middle of the counterweight 32. During operation, by setting the pad 7 in the middle of the counterweight 32, the pad 7 will first contact the inner wall of the first guide cylinder 15 during the subsequent impact of the counterweight 32 on the inner wall of the first guide cylinder 15. This step, in conjunction with the pad 7, can reduce the impact damage to the inner wall of the first guide cylinder 15 and facilitate the subsequent maintenance of the pad 7.

[0034] Working principle: After assembling the angle grinder body 1 with the external lithium battery pack, and activating the switch in the middle of the angle grinder body 1, the grinding disc 11 can rotate rapidly. A first housing 12 is located at the bottom of the angle grinder body 1. Together with the internal toothed belt 14, the rotating disc 11 simultaneously drives the rotating fan 13 to rotate within the inner wall of the first housing 12. The rapidly rotating fan 13 generates airflow, which passes through the first guide cylinder 15 and the second guide cylinder 16 before being discharged from the exhaust port 17. This airflow then contacts the hand of the operator, increasing air circulation near the hand. Two sets of connecting plates 22 are provided on the inner wall of the first housing 12. When impurities in the airflow come into contact with the inner walls of the first guide cylinder 15 and the second guide cylinder 16 and fall down, they can directly approach the position of the first rotating plate 25. When removing the impurities, the middle of the pull ring 23 can be pulled down and the output end of the spring rod 21 can be stretched. After the connecting plate 22 is separated from the bottom wall area of ​​the first housing 12, the first rotating plate 25 continues to tilt downward under the action of gravity, and then the impurities accumulated in the middle roll to the outside position. After releasing the pull ring 23, the connecting plate 22 can be removed by cooperating with the spring rod 21. To reset the position, a support member 3 is provided on the inner wall of the first guide cylinder 15, which supports the second rotating plate 31 as a whole. When airflow passes through the inner wall of the first guide cylinder 15, the airflow can directly contact the recessed air guide plate 33 and push the second rotating plate 31 inward to rotate until the counterweight 32 approaches and impacts the inner wall of the first guide cylinder 15, generating vibration. An arc-shaped frame plate 4 is provided at the end of the first guide cylinder 15, which supports the metal mesh 41, and the inner wall of the metal mesh 41 can block impurities falling from the first guide cylinder 15. By providing a support member 3 on the side wall of the first housing 12 to support the position of multiple sets of rubber sheets 51, when no airflow is discharged from the inner wall of the subsequent exhaust hole 17, the multiple sets of rubber sheets 51 will bend downward under the action of gravity and block the designated exhaust hole 17. By providing a counterweight bar 6 on the inner wall of the first rotating plate 25, the connecting plate 22 can continue to press down the first rotating plate 25 in conjunction with the counterweight bar 6 when it is opened. By providing a pad 7 in the middle of the counterweight 32, the pad 7 will first contact the inner wall of the first guide cylinder 15 during the subsequent impact of the counterweight 32.

[0035] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A handheld lithium-ion angle grinder, comprising a grinder body (1); a grinding disc (11) is mounted on the bottom of the grinder body (1); characterized in that: The angle grinder body (1) is fixedly connected to the bottom of a first housing (12); a rotating fan (13) is rotatably connected to the inner wall of the first housing (12); an internal toothed belt (14) is engaged at the output end of the rotating fan (13), and the other end of the internal toothed belt (14) is engaged with the output end of the grinding disc (11); a first guide cylinder (15) is fixedly connected to the inner wall of the first housing (12); a second guide cylinder (16) is fixedly connected to the end of the first guide cylinder (15), and the end of the second guide cylinder (16) is located on the outer wall of the first housing (12); the first guide cylinder (15) and the second guide cylinder (16) are connected; multiple sets of exhaust holes (17) are opened at the end of the second guide cylinder (16).

2. A hand-held lithium battery angle grinder as claimed in claim 1, characterized in that: Two sets of second housings (2) are fixedly connected to the inner wall of the first housing (12); a spring rod (21) is fixedly connected to the inner wall of the second housing (2); a connecting plate (22) is fixedly connected to the output end of the spring rod (21); a pull ring (23) is fixedly connected to the bottom of the connecting plate (22); a discharge groove (24) is opened in the middle of the first housing (12) and the first guide cylinder (15); a first rotating plate (25) is rotatably connected to the inner wall of the first housing (12), and the first rotating plate (25) is located on the inner wall of the discharge groove (24); the middle part of the first rotating plate (25) is inclined.

3. A hand-held lithium battery angle grinder as claimed in claim 1, characterized in that: A support member (3) is fixedly connected to the inner wall of the first guide tube (15); a second rotating plate (31) is rotatably connected to the middle of the support member (3); a counterweight (32) is fixedly connected to the end of the second rotating plate (31); a wind guide plate (33) is fixedly connected to the middle of the second rotating plate (31), and the wind guide plate (33) is shaped to be inclined inward.

4. A hand-held lithium battery angle grinder as claimed in claim 1, characterized in that: A frame plate (4) is fixedly connected to the end of the first guide tube (15); a metal mesh (41) is fixedly connected to the inner wall of the frame plate (4), and the metal mesh (41) and the frame plate (4) are arranged in an arc shape.

5. A hand-held lithium battery angle grinder as claimed in claim 1, characterized in that: The first housing (12) has a patch (5) fixed to its side wall; the patch (5) has a rubber sheet (51) fixed to its end, and multiple sets of rubber sheets (51) are arranged near the exhaust port (17).

6. A hand-held lithium battery angle grinder as claimed in claim 2, characterized in that: A counterweight strip (6) is fixed to the inner wall of the first rotating plate (25).

7. A handheld lithium-ion angle grinder as described in claim 3, characterized in that: A pad (7) is fixedly connected to the middle of the counterweight (32).

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