Alternating current brushless angle grinder

Abstract

The utility model discloses an alternating-current brushless angle grinder which comprises an angle grinder body, a moving assembly is arranged on the angle grinder body, a rotating assembly is arranged in front of the moving assembly, a grinding assembly is arranged on the rotating assembly, the angle grinder further comprises a control module, and an installation groove is formed in the angle grinder body. A cylindrical structure is arranged on the front section of the angle grinder body, and the angle grinder further comprises a limiting assembly. The angle grinder can stretch out and draw back through the sliding piece and the moving piece, the length can be conveniently increased or decreased according to the using habit of a user, the handle can be adjusted according to the using habit of the user, the user can conveniently use the angle grinder for a long time, and the idler wheel is attached to the side wall of a workpiece by adjusting the length and angle of the limiting assembly. And the side wall is prevented from being damaged when the angle grinder is used.

Description

Technical Field

[0001] The utility model relates to the technical field of electric tools, in particular to an AC brushless angle grinder. Background Art

[0002] An AC brushless angle grinder is a tool powered by an AC power supply. It uses a brushless motor as a power source. This motor has higher efficiency and longer service life than traditional brushed motors. The working principle of a brushless motor is to control the direction of the current through an electronic controller to achieve the rotation of the motor. This method is more efficient and stable than the traditional brushed motor that uses a mechanical commutator to switch the current direction. Most of the current brushless angle grinders cannot adjust the angle of the grinding surface, which is not convenient for processing workpieces of different shapes. In this regard, an AC brushless angle grinder is proposed, which allows the angle of the angle grinder to be adjusted. At the same time, the handle can be adjusted according to the user's holding habits, which is convenient for the operator to hold the angle grinder.

[0003] After searching, the Chinese patent application number 201810720961.8 discloses an angle-adjustable angle grinder, including an angle grinder body and a grinding disc. A main handle is provided at the rear end of the angle grinder body, and the angle grinder body and the main handle are connected by a universal adjustment mechanism; the universal adjustment mechanism includes a connecting rod, a ball head, a clamping ball bowl, and a clamp. One end of the connecting rod is fixedly connected to the angle grinder body, and the other end of the connecting rod is fixedly connected to the ball head. A sphere with a volume exceeding one-half of the ball head is embedded in the opening of the clamping ball bowl. The opening end of the clamping ball bowl is extended and formed with a clamping ring. The clamping ring is provided with multiple open grooves extending from the end of the clamping ring to the housing of the clamping ball bowl. The clamp is sleeved on the clamping ring, and the front end of the main handle is fixedly connected to the housing of the clamping ball bowl. The angle grinder in the above-mentioned document has the following shortcomings: the device has strength defects due to the spherical connection, which is not conducive to long-term processing. Utility Model Content

[0004] The utility model aims to solve the shortcomings in the prior art and proposes an AC brushless angle grinder.

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

[0006] An AC brushless angle grinder comprises an angle grinder body, a moving assembly is arranged on the angle grinder body, a rotating assembly is arranged in front of the moving assembly, a grinding assembly is arranged on the rotating assembly, the angle grinder further comprises a control module, a mounting groove is arranged on the angle grinder body, a columnar structure is arranged at the front section of the angle grinder body, and the moving assembly comprises:

[0007] A fixing plate, the fixing plate is arranged at the front end of the angle grinder body, a cylindrical protrusion structure is arranged on the fixing plate, the cylindrical protrusion structure is connected to the angle grinder body, a thread is arranged on the cylindrical protrusion structure, and a plurality of trapezoidal protrusion structures are arranged on one side of the fixing plate close to the cylindrical protrusion structure;

[0008] A fixed cover plate, the fixed cover plate is an annular structure, the fixed cover plate is provided with an annular cylindrical protrusion structure, a thread is provided in the protrusion structure, and a plurality of trapezoidal protrusion structures are provided on one side of the fixed cover plate close to the fixed plate;

[0009] A bearing, wherein the bearing is mounted on a cylindrical protrusion structure of the fixed cover plate;

[0010] Handle 2 is installed on the bearing. Handle 2 is an annular structure. Trapezoidal protrusion structures are arranged on both sides of handle 2. A columnar protrusion structure is arranged on one side of the annular structure. Patterns are arranged on the protrusion structure.

[0011] As a further solution of the utility model: the mobile assembly also includes:

[0012] A sliding member, the sliding member is installed at the front end of the angle grinder body, a plurality of threaded holes are arranged on one side of the sliding member, and a protruding structure is arranged on the sliding member;

[0013] A connecting piece is provided with a sliding groove inside the connecting piece, the sliding groove is adapted to the sliding piece, a fixing hole is provided on one side of the connecting piece, a fixing bolt is provided in the fixing hole, and the sliding piece is installed in the sliding groove of the connecting piece.

[0014] As a further solution of the utility model: the moving assembly also includes a handle 1, and the handle 1 is installed on the angle grinder body. The rotating handle 1 is rotatably connected and fixed by a knob.

[0015] As a further solution of the utility model: the rotating assembly includes:

[0016] A U-shaped frame, the U-shaped frame is installed on one side of the connecting piece, and holes are provided on both sides of the U-shaped frame;

[0017] A motor, wherein the motor is mounted on one side of the U-shaped frame and is electrically connected to the control module;

[0018] A rotating rod, which is installed in the U-shaped frame, is provided with a square protrusion structure, and one end of the rotating rod is connected to the output end of the motor;

[0019] The rotating seat is provided with a hole, the hole is matched with the rotating rod, and the rotating seat is installed on the U-shaped frame through the rotating rod.

[0020] As a further solution of the utility model: the grinding assembly includes:

[0021] A brushless DC motor, which is mounted on a rotating base and is electrically connected to a control module;

[0022] A protective shell, wherein the protective shell is mounted on the housing of the brushless DC motor, the protective shell is an annular structure, the output end of the brushless DC motor is located in the annular structure of the protective shell, and the outer shell on the side of the protective shell is a U-shaped structure;

[0023] The grinding wheel is arranged in a protective shell and installed at the output end of the DC brushless motor.

[0024] As a further solution of the utility model: the angle grinder also includes:

[0025] A water tank, the water tank is installed in the groove of the angle grinder body, the water tank is provided with a water inlet, and the water inlet is provided with a screw cap;

[0026] A rotating buckle, which is installed on the angle grinder body and located in front of the water tank;

[0027] A water pump, wherein the water pump is mounted on the protective shell and is electrically connected to the control module;

[0028] The water sprinkler is installed on both sides of the protective shell and is connected to a water pump and a water tank in sequence through water pipes.

[0029] As a further solution of the utility model: the angle grinder also includes a battery, and the battery is installed in the rear half of the angle grinder body, and the battery is used to supply power to various power-consuming structures.

[0030] As a further solution of the utility model: the limit assembly includes:

[0031] A connecting seat, the connecting seat is installed on one side of the protective shell;

[0032] A connecting rod 1, wherein the connecting rod 1 is rotatably connected to the connecting seat, and a mounting hole is provided on the connecting rod 1;

[0033] A second connecting rod, one end of which is provided with a sliding groove, a bolt and a nut are provided on the sliding groove, and the second connecting rod is installed in the mounting hole of the first connecting rod through the bolt;

[0034] The roller is installed at the bottom of the second connecting rod, and the roller is rotatably connected to the second connecting rod.

[0035] The beneficial effects of the utility model are:

[0036] The utility model fixes the handle 2 by connecting the fixed cover plate and the fixed plate with threads. If the handle 2 needs to be turned, the handle 2 is rotated and then turned according to the user's habit. Then the fixed cover plate is used again to fix the handle 2. This is convenient and quick. At the same time, the handle can be adjusted according to the user's habit, so that the user can use it for a long time.

[0037] The extension and retraction of the angle grinder is achieved through sliding parts and moving parts, so that the length can be increased or decreased according to the user's usage habits.

[0038] The control module controls the rotation of the motor to adjust the angle of the mold according to processing needs, making it easier for the operator to process the parts.

[0039] The DC brushless motor drives the grinding wheel for grinding, which increases the working efficiency of the angle grinder.

[0040] The grinding surface can be sprayed with water by a water sprayer to reduce dust generation. At the same time, dry grinding during grinding with a grinding wheel can be changed to wet grinding to reduce the degree of wear of the grinding wheel.

[0041] By adjusting the length and angle of the limit assembly and installing the limit assembly on the protective shell, when grinding the corners, the roller sticks to the side wall of the workpiece to prevent damage to the side wall caused by using the angle grinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 It is a schematic diagram of the structure of the utility model.

[0043] Figure 2 It is a schematic diagram of the structure of the utility model from a top view.

[0044] Figure 3 It is a schematic structural diagram of the cross section of the utility model.

[0045] Figure 4 It is a structural schematic diagram of the limit assembly of the utility model.

[0046] In the figure: 1-angle grinder body, 2-battery, 3-handle one, 4-water tank, 5-rotating buckle, 6-sliding part, 7-fixed plate, 8-handle two, 9-fixed cover plate, 10-bearing, 11-connecting part, 12-motor, 13-rotating rod, 14-rotating seat, 15-DC brushless motor, 16-grinding wheel, 17-protective shell, 18-water pump, 19-sprinkler, 20-connecting seat, 21-connecting rod one, 22-connecting rod two, 23-roller, 24-U-shaped frame. DETAILED DESCRIPTION

[0047] The technical solution of the utility model is further described in detail below in conjunction with specific implementation methods.

[0048] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention. Embodiment 1:

[0049] An AC brushless angle grinder, such as Figure 1 As shown, it includes an angle grinder body 1, a moving component is arranged on the angle grinder body 1, a rotating component is arranged in front of the moving component, a grinding component is arranged on the rotating component, the angle grinder also includes a control module, a mounting groove is arranged on the angle grinder body 1, a columnar structure is arranged at the front section of the angle grinder body 1, and the moving component includes:

[0050] A fixing plate 7, wherein the fixing plate 7 is arranged at the front end of the angle grinder body 1, and a cylindrical protrusion structure is arranged on the fixing plate 7, the cylindrical protrusion structure is connected to the angle grinder body 1, a thread is arranged on the cylindrical protrusion structure, and a plurality of trapezoidal protrusion structures are arranged on one side of the fixing plate 7 close to the cylindrical protrusion structure;

[0051] The fixed cover plate 9 is an annular structure, and is provided with an annular cylindrical protrusion structure, in which a thread is provided, and a plurality of trapezoidal protrusion structures are provided on one side of the fixed cover plate 9 close to the fixed plate 7;

[0052] A bearing 10, wherein the bearing 10 is mounted on a cylindrical protruding structure of the fixed cover plate 9;

[0053] The second handle 8 is installed on the bearing 10. The second handle 8 is an annular structure. Trapezoidal protrusion structures are arranged on both sides of the second handle 8. A columnar protrusion structure is arranged on one side of the annular structure. The protrusion structure is provided with a pattern.

[0054] The handle 2 8 is fixed by threaded connection between the fixed cover plate 9 and the fixed plate 7. If the handle 2 8 needs to be rotated, the handle 2 8 is rotated and then the handle 2 8 is rotated according to the user's habit, and then the fixed cover plate 9 is used again to fix the handle 2 8. It is convenient and quick, and can be adjusted according to the user's habit, so that the user can use it for a long time.

[0055] like Figure 2 , Figure 3 As shown, the mobile component also includes:

[0056] A sliding member 6, wherein the sliding member 6 is mounted at the front end of the angle grinder body 1, a plurality of threaded holes are arranged on one side of the sliding member 6, and a protruding structure is arranged on the sliding member 6;

[0057] The connecting member 11 is provided with a sliding groove therein, the sliding groove is adapted to the sliding member 6 , a fixing hole is provided on one side of the connecting member 11 , a fixing bolt is provided in the fixing hole, and the sliding member 6 is installed in the sliding groove of the connecting member 11 .

[0058] The sliding member 6 and the moving member 11 enable the angle grinder to be extended and retracted, so that the length can be increased or decreased according to the user's usage habits.

[0059] To improve user comfort, Figure 1 As shown, the moving assembly also includes a handle 3, which is mounted on the angle grinder body 1. The rotating handle 3 is rotatably connected and fixed by a knob.

[0060] like Figure 1 , Figure 3 As shown, the rotating assembly includes:

[0061] A U-shaped frame 24, which is installed on one side of the connecting member 11, and holes are provided on both sides of the U-shaped frame 24;

[0062] The motor 12 is mounted on one side of the U-shaped frame 24 and is electrically connected to the control module;

[0063] A rotating rod 13, wherein the rotating rod 13 is installed in the U-shaped frame 24, a square protrusion structure is provided on the rotating rod 13, and one end of the rotating rod 13 is connected to the output end of the motor 12;

[0064] The rotating seat 14 is provided with a hole, the hole is adapted to the rotating rod 13 , and the rotating seat 14 is installed on the U-shaped frame 24 through the rotating rod 13 .

[0065] The control module controls the motor 12 to rotate, so as to adjust the angle of the mold according to processing requirements and facilitate the operator to process the parts.

[0066] like Figure 1 As shown, the grinding assembly includes:

[0067] A brushless DC motor 15, wherein the brushless DC motor 15 is mounted on the rotating base 14, and the brushless DC motor 15 is electrically connected to the control module;

[0068] A protective shell 17, wherein the protective shell 17 is mounted on the housing of the brushless DC motor 15, the protective shell 17 is an annular structure, the output end of the brushless DC motor 15 is located in the annular structure of the protective shell 17, and the outer shell of the side of the protective shell 17 is a U-shaped structure;

[0069] The grinding wheel 16 is disposed in a protective shell 17 and is installed at the output end of the brushless DC motor 15 .

[0070] The DC brushless motor 15 drives the grinding wheel 16 for grinding, and the DC brushless motor 15 increases the working efficiency of the angle grinder.

[0071] In order to reduce the dust generated by grinding and reduce the wear of the grinding wheel, Figure 1 As shown, the angle grinder also includes:

[0072] A water tank 4, wherein the water tank 4 is installed in the groove of the angle grinder body 1, and the water tank 4 is provided with a water inlet, and a screw cap is provided on the water inlet;

[0073] A rotating buckle 5, which is mounted on the angle grinder body 1 and is located in front of the water tank 4;

[0074] A water pump 18, wherein the water pump 18 is mounted on the protective shell 17, and the water pump 18 is electrically connected to the control module;

[0075] The water sprayer 19 is installed on both sides of the protective shell 17. The water sprayer 19 is connected to the water pump 18 and the water tank 4 in sequence through water pipes.

[0076] The grinding surface can be sprayed with water by the water sprayer 19 to reduce the generation of dust. At the same time, the dry grinding during grinding with the grinding wheel can be changed to wet grinding to reduce the wear degree of the grinding wheel.

[0077] like Figure 1 As shown, the angle grinder further comprises a battery 2, and the battery 2 is installed in the rear half of the angle grinder body 1, and the battery 2 is used to supply power to various electrical structures.

[0078] Working principle: The operator drives the motor 12 through the control module to rotate the grinding assembly to a suitable angle, adjusts the handle 1 3 and the handle 2 8 according to the usage habits to make the operation more convenient, and then uses the control module to drive the DC brushless motor 15 to make the grinding wheel 16 grind the workpiece, and uses the control module to drive the water pump 18 to make the sprinkler 19 spray water on the workpiece. Embodiment 2:

[0079] To prevent damage to the side walls when grinding right-angle parts, refer to Figure 4 , an AC brushless angle grinder includes a limit assembly, and this embodiment makes the following improvements compared with embodiment 1, the limit assembly includes:

[0080] A connecting seat 20, wherein the connecting seat 20 is installed on one side of the protective shell 17;

[0081] A connecting rod 21, wherein the connecting rod 21 is rotatably connected to the connecting seat 20, and a mounting hole is provided on the connecting rod 21;

[0082] A second connecting rod 22, one end of which is provided with a sliding groove, a bolt and a nut are provided on the sliding groove, and the second connecting rod 22 is installed in the installation hole of the first connecting rod 21 by means of bolts;

[0083] The roller 23 is installed at the bottom of the second connecting rod 22, and the roller 23 is rotatably connected to the second connecting rod 22.

[0084] Working principle: By adjusting the length and angle of the limit assembly, the limit assembly is installed on the protective shell 17. When grinding the corners, the roller 23 sticks to the side wall of the workpiece to prevent damage to the side wall caused by using the angle grinder.

[0085] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An AC brushless angle grinder, comprising an angle grinder body (1), characterized in that: The angle grinder body (1) is provided with a moving component, a rotating component is provided in front of the moving component, and a grinding component is provided on the rotating component. The angle grinder further comprises a control module. The angle grinder body (1) is provided with a mounting groove. The front section of the angle grinder body (1) is provided with a columnar structure. The moving component comprises: A fixing plate (7), the fixing plate (7) being arranged at the front end of the angle grinder body (1), the fixing plate (7) being provided with a columnar protrusion structure, the columnar protrusion structure being connected to the angle grinder body (1), the columnar protrusion structure being provided with a thread, and a plurality of trapezoidal protrusion structures being provided on a side of the fixing plate (7) close to the columnar protrusion structure; A fixed cover plate (9), the fixed cover plate (9) being an annular structure, the fixed cover plate (9) being provided with an annular cylindrical protrusion structure, a thread being provided in the protrusion structure, and a plurality of trapezoidal protrusion structures being provided on a side of the fixed cover plate (9) close to the fixed plate (7); A bearing (10), wherein the bearing (10) is mounted on a cylindrical protruding structure of the fixed cover plate (9); A second handle (8), the second handle (8) being mounted on a bearing (10), the second handle (8) being an annular structure, trapezoidal protruding structures being arranged on both sides of the second handle (8), a columnar protruding structure being arranged on one side of the annular structure, and a pattern being arranged on the protruding structure.

2. The AC brushless angle grinder according to claim 1, characterized in that: The mobile component also includes: A sliding member (6), the sliding member (6) being mounted on the front end of the angle grinder body (1), a plurality of threaded holes being provided on one side of the sliding member (6), and a protruding structure being provided on the sliding member (6); A connecting member (11) is provided with a sliding groove in the connecting member (11), the sliding groove being adapted to the sliding member (6), a fixing hole being provided on one side of the connecting member (11), a fixing bolt being provided in the fixing hole, and the sliding member (6) being installed in the sliding groove of the connecting member (11).

3. The AC brushless angle grinder according to claim 2, characterized in that: The moving assembly further comprises a handle 1 (3), wherein the handle 1 (3) is mounted on the angle grinder body (1), and the handle 1 (3) is rotatably connected and fixed by a knob.

4. The AC brushless angle grinder according to claim 3, characterized in that: The rotating assembly comprises: A U-shaped frame (24), wherein the U-shaped frame (24) is mounted on one side of the connecting member (11), and holes are provided on both sides of the U-shaped frame (24); A motor (12), wherein the motor (12) is mounted on one side of the U-shaped frame (24), and the motor (12) is electrically connected to the control module; A rotating rod (13), the rotating rod (13) being installed in the U-shaped frame (24), the rotating rod (13) being provided with a square protrusion structure, and one end of the rotating rod (13) being connected to an output end of the motor (12); A rotating seat (14) is provided with a hole, the hole being adapted to fit the rotating rod (13), and the rotating seat (14) is mounted on the U-shaped frame (24) via the rotating rod (13).

5. The AC brushless angle grinder according to claim 4, characterized in that: The grinding assembly comprises: A brushless DC motor (15), wherein the brushless DC motor (15) is mounted on a rotating seat (14), and the brushless DC motor (15) is electrically connected to a control module; A protective shell (17), the protective shell (17) being mounted on a housing of a brushless DC motor (15), the protective shell (17) being an annular structure, the output end of the brushless DC motor (15) being located in the annular structure of the protective shell (17), and the outer shell on the side of the protective shell (17) being a U-shaped structure; A grinding wheel (16), wherein the grinding wheel (16) is arranged in a protective shell (17), and the grinding wheel (16) is installed at the output end of the DC brushless motor (15).

6. The AC brushless angle grinder according to claim 5, characterized in that: The angle grinder also includes: A water tank (4), the water tank (4) being installed in the groove of the angle grinder body (1), the water tank (4) being provided with a water inlet, and the water inlet being provided with a screw cap; A rotating buckle (5), the rotating buckle (5) being mounted on the angle grinder body (1) and located in front of the water tank (4); A water pump (18), wherein the water pump (18) is mounted on the protective shell (17), and the water pump (18) is electrically connected to the control module; A water sprayer (19), wherein the water sprayer (19) is installed on both sides of the protective shell (17), and the water sprayer (19) is connected to the water pump (18) and the water tank (4) in sequence through water pipes.

7. The AC brushless angle grinder according to claim 6, characterized in that: The angle grinder further comprises a battery (2), wherein the battery (2) is mounted on the rear half of the angle grinder body (1), and the battery (2) is used to supply power to various power-consuming structures.

8. The AC brushless angle grinder according to claim 7, characterized in that: The invention comprises a limit assembly, wherein the limit assembly comprises: A connecting seat (20), wherein the connecting seat (20) is mounted on one side of the protective shell (17); A connecting rod (21), wherein the connecting rod (21) is rotatably connected to the connecting seat (20), and a mounting hole is provided on the connecting rod (21); A second connecting rod (22), wherein one end of the second connecting rod (22) is provided with a sliding groove, a bolt and a nut are provided on the sliding groove, and the second connecting rod (22) is installed in the installation hole of the first connecting rod (21) by means of bolts; A roller (23) is mounted on the bottom of the second connecting rod (22), and the roller (23) is rotatably connected to the second connecting rod (22).

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