Eccentric angle grinder

Abstract

The utility model relates to the technical field of grinding, in particular to an eccentric angle grinder which comprises a main body, a motor is fixed in the main body through a second fixing frame, driving teeth are arranged on one side of the motor through a third rotating shaft, and a first protective cover is fixed on one side of the main body through bolts. A first auxiliary seat is fixed on one side of the first protective cover, a handle is rotationally connected to the first auxiliary seat in a threaded mode, a second auxiliary seat is fixed on the other side of the first protective cover, the first auxiliary seat and the second auxiliary seat are the same, and a second bearing is arranged at the upper end of the first protective cover. And by arranging the eccentric disc, the angle grinder can realize eccentric grinding during grinding, so that the grinding head generates translation and rotation motion to grind a workpiece.

Description

Technical Field

[0001] The utility model relates to the technical field of eccentric angle grinders, in particular to an eccentric angle grinder. Background Art

[0002] An eccentric angle grinder is an electric tool used for cutting and grinding metal, stone, fiberglass and other components. It is mainly used for cutting, grinding and brushing metal and stone. Existing eccentric angle grinders have no protective cover when performing cutting operations. When they come into contact with objects, they produce debris that can easily injure people. At the same time, due to the effect of centrifugal force during work, eccentric angle grinders are more difficult to operate than conventional angle grinders. It is not effective to use them with one hand, and there is a possibility of injury due to unstable grip.

[0003] After searching, it was found that an eccentric angle grinder is disclosed in the Chinese patent with application number 201921832531.1, including a central output shaft, an eccentric wheel and an eccentric output shaft, wherein a T-shaped groove is provided on the circumferential surface of the eccentric wheel and a U-shaped groove is formed on the end surface close to the working head, and the eccentric angle grinder also includes a connecting piece and a counterweight block, and the counterweight block is relatively movably connected to the eccentric wheel through the connecting piece. The utility model provides an eccentric angle grinder, which adjusts the distance between the counterweight block and the central output shaft by adjusting the screw to adjust the best fit.

[0004] However, the patents in the prior art have the following disadvantages:

[0005] The working head of this eccentric angle grinder cannot be disassembled. After long-term use, the working head becomes worn and inconvenient to replace. No battery assembly is provided, so the machine cannot be operated outdoors. The working head is not provided with a protective cover, posing a safety hazard of injury. Utility Model Content

[0006] 1. Technical issues to be resolved

[0007] In view of the deficiencies in the prior art, the utility model provides an eccentric angle grinder, which solves the problems that the working head cannot be disassembled, the working head becomes worn after long-term use, and is inconvenient to replace; no battery assembly is provided, and operation cannot be performed when working outdoors; and the working head is not provided with a protective cover, posing a safety hazard of injury.

[0008] (II) Technical solution

[0009] To achieve the above objectives, the utility model is implemented through the following technical solutions: it includes a main body, characterized in that: a motor is fixed inside the main body through a second fixing frame, a driving tooth is arranged on one side of the motor through a third rotating shaft, a first protective cover is fixed to one side of the main body through bolts, a first auxiliary seat is fixed to one side of the first protective cover, a handle is threadedly connected to the first auxiliary seat, a second auxiliary seat is fixed to the other side of the first protective cover, the first auxiliary seat and the second auxiliary seat are the same, a second bearing is arranged at the upper end of the first protective cover, a first bearing is arranged at the lower end of the first protective cover, a driven gear disk is concentrically sleeved on the first bearing, the driving tooth is meshed with the driven gear disk, a second rotating shaft is arranged at the bottom end of the driven gear disk, an eccentric disk is arranged at the bottom end of the second rotating shaft, and a first rotating shaft is arranged at the center of the bottom end of the eccentric disk.

[0010] As a preferred embodiment of the utility model, a second chuck is provided at the bottom end of the first rotating shaft, and a grinding disc is installed at the bottom end of the second chuck.

[0011] As a preferred embodiment of the utility model, a first chuck is provided at the bottom end of the grinding plate, and one side of the first chuck is detachably penetrated by a bolt through the first chuck and the grinding plate and rotated into the second chuck.

[0012] As a preferred embodiment of the utility model, a controller is fixed inside the main body by bolts, the controller is electrically connected to other electrical devices, and a switch is provided on one side of the outside of the main body.

[0013] As a preferred embodiment of the utility model, a battery assembly is arranged inside the main body, and a charging port is arranged at one end of the main body.

[0014] As a preferred embodiment of the present invention, heat dissipation plates are provided on both sides of the main body.

[0015] As a preferred embodiment of the present invention, a second protective cover is fixed to the bottom end of the first protective cover by bolts.

[0016] As a preferred embodiment of the utility model, first fixing frames are fixed to both sides of the second protective cover by bolts, and the protective cover is fixed to the bottom end of the first fixing frame.

[0017] (III) Beneficial effects

[0018] The utility model provides an eccentric angle grinder, which has the following beneficial effects:

[0019] The utility model provides an eccentric disk so that the angle grinder can realize eccentric grinding during grinding, so that the grinding head can generate translation and rotation motion to perform grinding operation on the workpiece.

[0020] The utility model is equipped with a large-capacity battery inside to power the angle grinder. The battery is charged by arranging a charging port. The grinding disc of the angle grinder is detachably clamped and fixed by bolts by arranging a first clamping plate and a second clamping plate.

[0021] The utility model provides auxiliary seats on both sides, which can be connected to handles by rotation. When the angle grinder is working, the handles assist the grinding operation, thereby improving the convenience of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0023] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0024] Figure 2 It is a schematic diagram of the side structure of the utility model.

[0025] Figure 3 It is a schematic diagram of the cross-sectional structure of the utility model.

[0026] In the figure: 1. main body; 2. charging port; 3. switch; 4. heat sink; 5. first fixed frame; 6. protective cover; 7. grinding disc; 8. handle; 9. first auxiliary seat; 10. second auxiliary seat; 11. first protective cover; 12. battery assembly; 13. controller; 14. motor; 15. second fixed frame; 16. first chuck; 17. second chuck; 18. first rotating shaft; 19. eccentric disk; 20. second protective cover; 21. second rotating shaft; 22. first bearing; 23. driven gear disk; 24. second bearing; 25. driving tooth; 26. third rotating shaft. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] See also Figures 1 to 3The utility model provides a technical solution: an eccentric angle grinder, comprising a main body 1, a motor 14 is fixed inside the main body 1 through a second fixing frame 15, a driving tooth 25 is arranged on one side of the motor 14 through a third rotating shaft 26, a first protective cover 11 is fixed to one side of the main body 1 through a bolt, a first auxiliary seat 9 is fixed to one side of the first protective cover 11, a handle 8 is threadedly rotatably connected to the first auxiliary seat 9, a second auxiliary seat 10 is fixed to the other side of the first protective cover 11, the first auxiliary seat 9 is the same as the second auxiliary seat 10, a second bearing 24 is arranged at the upper end of the first protective cover 11, a first bearing 22 is arranged at the lower end of the first protective cover 11, a driven toothed disc 23 is concentrically sleeved on the first bearing 22, the driving tooth 25 is meshed and connected with the driven toothed disc 23, a second rotating shaft 21 is arranged at the bottom end of the driven toothed disc 23, an eccentric disc 19 is arranged at the bottom end of the second rotating shaft 21, and a first rotating shaft 18 is arranged at the center of the bottom end of the eccentric disc 19.

[0029] In a specific embodiment of the present utility model, a motor 14 is fixed inside the main body 1 through a second fixing frame 15 to provide a rotational driving force for the angle grinder to grind. A driving tooth 25 is provided on one side of the motor 14 through a third rotating shaft 26 for power transmission. A first protective cover 11 is fixed on one side of the main body 1 to protect the operation of the rotating shaft and support the driven gear plate 23. A first auxiliary seat 9 is fixed on one side of the first protective cover 11. The first auxiliary seat 9 is threadedly connected to a handle 8. The angle grinder assists the grinding operation through the handle 8 when working to improve the convenience of use. A second auxiliary seat 10 is fixed on the other side of the first protective cover 11. The first auxiliary seat 9 and the second auxiliary seat 10 are the same and can be used according to the user's own The installation position of the handle 8 is selected as required, a second bearing 24 is provided at the upper end of the first protective cover 11, and a first bearing 22 is provided at the lower end of the first protective cover 11, and the driven gear disc 23 is installed. The first bearing 22 is concentrically sleeved with the driven gear disc 23, and the driving tooth 25 is meshed and connected with the driven gear disc 23 to realize the transmission of driving force. A second rotating shaft 21 is provided at the bottom end of the driven gear disc 23 for connecting the eccentric disc 19, and an eccentric disc 19 is provided at the bottom end of the second rotating shaft 21. By setting the eccentric disc 19, the angle grinder can realize eccentric grinding during grinding, so that the grinding head produces translational and rotational motion, and performs grinding operations on the workpiece. A first rotating shaft 18 is provided at the bottom center of the eccentric disc 19 for installing other components.

[0030] Specifically, a second chuck 17 is disposed at the bottom end of the first rotating shaft 18 , and a grinding disc 7 is installed at the bottom end of the second chuck 17 .

[0031] In order to solve the problem of angle grinder grinding, such as Figure 3 As shown, a second chuck 17 is provided at the bottom end of the first rotating shaft 18, and a grinding disc 7 is installed at the bottom end of the second chuck 17 for grinding the object.

[0032] Specifically, a first chuck 16 is disposed at the bottom end of the grinding disc 7 , and one side of the first chuck 16 is detachably penetrated through the first chuck 16 and the grinding disc 7 by bolts and rotated into the second chuck 17 .

[0033] In order to solve the problem of detachable fixing of grinding disc, such as Figure 1 As shown, a first chuck 16 is provided at the bottom end of the grinding disc 7. One side of the first chuck 16 can be detachably penetrated by bolts through the first chuck 16 and the grinding disc 7 and rotated into the second chuck 17, which is used to lock the grinding disc 7 to prevent the grinding disc 7 from loosening during operation and causing safety accidents. The detachable setting allows the grinding disc 7 to be replaced.

[0034] Specifically, a controller 13 is fixed inside the main body 1 by bolts, and the controller 13 is electrically connected to other electrical devices. A switch 3 is provided on one side of the outside of the main body 1 .

[0035] In order to solve the problems of device operation control, such as Figure 1 , 3 As shown, a controller 13 is fixed inside the main body 1, and the controller 13 is electrically connected to other electrical devices and controls them. A switch 3 is provided on one side of the outside of the main body 1, and the user can operate and control the device through the switch 3.

[0036] Specifically, a battery assembly 12 is disposed inside the main body 1 , and a charging port 2 is disposed at one end of the main body 1 .

[0037] In order to solve problems such as Figure 1 , 3 As shown, a battery assembly 12 is disposed inside the main body 1 for powering the device, and a charging port 2 is disposed at one end of the main body 1 for charging the battery assembly 12 .

[0038] Specifically, heat dissipation plates 4 are arranged on both sides of the main body 1 .

[0039] In order to solve the problem of heat dissipation of motor, such as Figure 1 As shown, heat dissipation plates 4 are provided on both sides of the main body 1, and the heat dissipation plates 4 are in contact with the battery assembly 12 through heat conduction blocks to conduct heat to achieve heat dissipation.

[0040] Specifically, a second protective cover 20 is fixed to the bottom end of the first protective cover 11 by bolts.

[0041] In order to solve the problem of device operation safety protection, such as Figure 1 As shown, a second protective cover 20 is fixed to the bottom of the first protective cover 11 to protect the eccentric disk 19 and other components, and also to prevent people from touching and causing dangerous situations.

[0042] Specifically, first fixing frames 5 are fixed to both sides of the second protective cover 20 by bolts, and a protective cover 6 is fixed to the bottom end of the first fixing frame 5 .

[0043] In order to solve the problem of debris splashing and injuring people when the grinding disc contacts objects, such as Figure 1 As shown, first fixing frames 5 are fixed on both sides of the second protective cover 20 for installing the protective cover 6. The bottom end of the first fixing frame 5 is fixed with the protective cover 6 to prevent the grinding disc 7 from contacting with objects and causing debris to splash and injure people.

[0044] The specific implementation methods disclosed in the present invention omit detailed descriptions of known functions and known components. To ensure the compatibility of the equipment, the operating methods adopted are consistent with the parameters of commercially available equipment.

[0045] In summary, the working principle and use process of the utility model are as follows: a motor 14 is fixed inside the main body 1 through a second fixing frame 15 to provide a rotational driving force for the angle grinder to grind; a driving tooth 25 is provided on one side of the motor 14 through a third rotating shaft 26 for power transmission; a first protective cover 11 is fixed on one side of the main body 1 to protect the operation of the rotating shaft and support the driven gear plate 23; a first auxiliary seat 9 is fixed on one side of the first protective cover 11, and a handle 8 is threadedly connected to the first auxiliary seat 9. When the angle grinder is working, the handle 8 assists the grinding operation to improve the convenience of use; a second auxiliary seat 10 is fixed on the other side of the first protective cover 11, and the first auxiliary seat 9 and the second The auxiliary seat 10 is the same, and the installation position of the handle 8 can be selected according to one's own needs. A second bearing 24 is provided at the upper end of the first protective cover 11, and a first bearing 22 is provided at the lower end of the first protective cover 11. The driven gear disc 23 is installed, and the first bearing 22 is concentrically sleeved with the driven gear disc 23. The driving tooth 25 is meshed and connected with the driven gear disc 23 to realize the transmission of the driving force. A second rotating shaft 21 is provided at the bottom end of the driven gear disc 23 for connecting the eccentric disc 19. An eccentric disc 19 is provided at the bottom end of the second rotating shaft 21. By setting the eccentric disc 19, the angle grinder can realize eccentric grinding during grinding, so that the grinding head produces translational and rotational motions, and the grinding operation is performed on the workpiece. The center of the bottom end of the eccentric disc 19 A first rotating shaft 18 is provided for installing other components, a second chuck 17 is provided at the bottom of the first rotating shaft 18, a grinding disc 7 is installed at the bottom of the second chuck 17 for grinding objects, a first chuck 16 is provided at the bottom of the grinding disc 7, one side of the first chuck 16 is detachably penetrated through the first chuck 16 and the grinding disc 7 by bolts, and is rotated into the second chuck 17 for locking the grinding disc 7 to prevent the grinding disc 7 from loosening during operation and causing safety accidents, and the detachable setting allows the grinding disc 7 to be replaced, a controller 13 is fixed inside the main body 1, the controller 13 is electrically connected to other electrical devices and controls them, a switch 3 is provided on one side of the outside of the main body 1, and the user can turn on the switch The device is operated and controlled by switch 3. A battery assembly 12 is arranged inside the main body 1 for powering the device. A charging port 2 is arranged at one end of the main body 1 for charging the battery assembly 12. Heat sinks 4 are arranged on both sides of the main body 1. The heat sink 4 is in contact with the battery assembly 12 through a heat conductive block to conduct heat to achieve heat dissipation. A second protective cover 20 is fixed to the bottom of the first protective cover 11 for protecting the eccentric disk 19 and other components, and also to prevent people from touching and causing dangerous situations. First fixing frames 5 are fixed on both sides of the second protective cover 20 for installing protective covers 6. Protective covers 6 are fixed to the bottom of the first fixing frame 5 to prevent the grinding disc 7 from contacting objects and causing debris to splash and injure people.

[0046] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An eccentric angle grinder, comprising a main body (1), characterized in that: A motor (14) is fixed inside the main body (1) via a second fixing frame (15); a driving tooth (25) is provided on one side of the motor (14) via a third rotating shaft (26); a first protective cover (11) is fixed on one side of the main body (1) via bolts; a first auxiliary seat (9) is fixed on one side of the first protective cover (11); a handle (8) is rotatably connected to the first auxiliary seat (9); a second auxiliary seat (10) is fixed on the other side of the first protective cover (11); the first auxiliary seat (9) and the second auxiliary seat (10) are connected to each other via a third rotating shaft (26); The seat (10) is the same as the seat (10), the upper end of the first protective cover (11) is provided with a second bearing (24), the lower end of the first protective cover (11) is provided with a first bearing (22), the first bearing (22) is coaxially sleeved with a driven gear plate (23), the driving tooth (25) is meshingly connected with the driven gear plate (23), the bottom end of the driven gear plate (23) is provided with a second rotating shaft (21), the bottom end of the second rotating shaft (21) is provided with an eccentric plate (19), and the bottom center of the eccentric plate (19) is provided with a first rotating shaft (18).

2. The eccentric angle grinder according to claim 1, characterized in that: A second chuck (17) is provided at the bottom end of the first rotating shaft (18), and a grinding disc (7) is installed at the bottom end of the second chuck (17).

3. The eccentric angle grinder according to claim 2, characterized in that: A first chuck (16) is provided at the bottom end of the grinding plate (7), and one side of the first chuck (16) is detachably penetrated by bolts through the first chuck (16) and the grinding plate (7) and rotated into the second chuck (17).

4. The eccentric angle grinder according to claim 1, characterized in that: A controller (13) is fixed inside the main body (1) by means of bolts, and the controller (13) is electrically connected to other electrical devices. A switch (3) is provided on one side of the outside of the main body (1).

5. The eccentric angle grinder according to claim 4, characterized in that: A battery assembly (12) is arranged inside the main body (1), and a charging port (2) is arranged at one end of the main body (1).

6. The eccentric angle grinder according to claim 5, characterized in that: Heat dissipation plates (4) are provided on both sides of the main body (1).

7. The eccentric angle grinder according to claim 1, characterized in that: A second protective cover (20) is fixed to the bottom end of the first protective cover (11) via bolts.

8. The eccentric angle grinder according to claim 7, characterized in that: The first fixing frames (5) are fixed to both sides of the second protective cover (20) by means of bolts, and the bottom end of the first fixing frame (5) is fixed to the protective cover (6).

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