Angle grinder
By designing an angle grinder including controlling handles, rotating motors, grinding modules, support arms and transmission modules, the problem that existing angle grinders cannot grind or cut parts in narrow spaces is solved, and efficient grinding and cutting parts in narrow spaces is achieved.
Patent Information
- Application Number
- CN202421382749.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-17
- Publication Date
- 2025-04-01
- Estimated Expiration
- 2034-06-17
AI Technical Summary
The existing angle grinders are large in size and cannot grind or cut parts located in narrow spaces.
An angle grinder is designed, including a control handle, a rotating motor, a grinding module, a first arm, a second arm and a transmission module. The power transmission from the rotating motor to the grinding module is achieved through the transmission module, and the grinding module can be extended into a narrow space through the extended arm structure.
The ability to grind and cut components located in a narrow space is achieved, and the application range of angle grinders is expanded.
Smart Images
Figure CN222696800U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of electric tools, in particular to an angle grinder. Background Art
[0002] Angle grinder, also known as grinding machine or disc grinder, is a kind of grinding tool used for cutting and grinding fiberglass. Angle grinder is a portable electric tool that uses fiberglass to cut and grind, mainly used for cutting, grinding and brushing metal and stone.
[0003] Existing angle grinders are usually large in size and cannot grind or cut parts located in narrow spaces. Utility Model Content
[0004] The following is a summary of the subject matter described in detail herein; this summary is not intended to limit the scope of the claims.
[0005] The utility model provides an angle grinder which can grind and cut parts located in a narrow space.
[0006] To achieve the above-mentioned objectives, the utility model provides an angle grinder, comprising: a control handle, a rotating motor is arranged in the control handle, and the rotating motor is provided with a rotatable first rotating shaft; a grinding and cutting module; a first support arm, the first support arm is provided with a through first through hole, the first support arm is connected to the control handle so that the first rotating shaft passes through the first through hole; a second support arm, fixedly connected to the first support arm, the second support arm is provided with a through second through hole, the second through hole is provided with a rotatable second rotating shaft, one end of the second rotating shaft is fixedly connected to the grinding and cutting module; a transmission module, the first rotating shaft is transmission-connected to the second rotating shaft through the transmission module, and the rotating motor is used to drive the first rotating shaft to rotate, so as to drive the grinding and cutting module to rotate through the transmission module and the second rotating shaft.
[0007] In some embodiments, a bearing is disposed in the second through hole, a fixed portion of the bearing is fixedly connected to an inner wall of the second through hole, and a movable portion of the bearing is in contact with the second rotating shaft.
[0008] In some embodiments, the control handle is provided with a mounting portion, and an outer wall of the mounting portion is in frictional contact with an inner wall of the first through hole.
[0009] In some embodiments, a first threaded hole is formed between the outer wall of the first arm and the inner wall of the first through hole, and a first fixing bolt is installed on the first threaded hole. The first fixing bolt is used to fix the mounting portion.
[0010] In some embodiments, the outer surface of the mounting portion is provided with a plurality of limiting grooves matching the first fixing bolts.
[0011] In some embodiments, the transmission module includes a first rotating block, a second rotating block and a transmission belt, the first rotating block is fixedly connected to the first rotating shaft, the second rotating block is fixedly connected to the second rotating shaft, and the transmission belt is respectively in contact with the outer surfaces of the first rotating block and the second rotating block.
[0012] In some embodiments, the first rotating block and the second rotating block are both cylindrical, two end surfaces of the first rotating block are respectively provided with first baffles, and two end surfaces of the second rotating block are respectively provided with second baffles.
[0013] In some embodiments, the first support arm includes a first rounded corner portion and a first right-angle portion, the first rounded corner portion is fixedly connected to the first right-angle portion, and the first right-angle portion is fixedly connected to the second support arm.
[0014] In some embodiments, the second support arm includes a second rounded portion and a second right-angle portion, the second rounded portion is fixedly connected to the second right-angle portion, and the second right-angle portion is fixedly connected to the first support arm.
[0015] In some embodiments, a second threaded hole is provided on the first arm, a third threaded hole is provided on the second arm, and second fixing bolts are installed on the second threaded hole and the third threaded hole, and the second fixing bolts are used to fix the first arm and the second arm.
[0016] The embodiments of the present application include at least the following beneficial effects: by setting a transmission module, the transmission module is respectively connected to the first rotating shaft and the second rotating shaft, the rotating motor drives the first rotating shaft to rotate, the first rotating shaft is connected to the transmission module, therefore, the first rotating shaft drives the transmission module to rotate, the second rotating shaft is connected to the transmission module, therefore, the transmission module drives the second rotating shaft to rotate, one end of the second rotating shaft is fixedly connected to the grinding and cutting module, therefore, the second rotating shaft drives the grinding and cutting module to rotate, thereby realizing power transmission from the rotating motor to the grinding and cutting module; by setting the first support arm and the second support arm, the distance between the grinding and cutting module and the control handle is extended, so that the angle grinder can extend the grinding and cutting module into a narrow space alone, thereby being able to grind and cut components located in the narrow space.
[0017] Other features and advantages of the utility model will be described in the following description, and partly become apparent from the description, or understood by practicing the utility model. The purpose and other advantages of the utility model can be realized and obtained by the structures specifically pointed out in the description, claims and drawings. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] The accompanying drawings are used to provide a further understanding of the technical solution of the utility model and constitute a part of the specification. Together with the embodiments of the utility model, they are used to explain the technical solution of the utility model and do not constitute a limitation on the technical solution of the utility model.
[0019] Figure 1 An optional structural schematic diagram of an angle grinder provided in an embodiment of the utility model;
[0020] Figure 2 The embodiment of the utility model provides Figure 1 An optional structural diagram of the A position in the middle;
[0021] Figure 3 A schematic diagram of an optional structure of the first support arm and the second support arm provided in an embodiment of the utility model. DETAILED DESCRIPTION
[0022] 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.
[0023] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.
[0024] In the description of the present utility model, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.
[0025] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.
[0026] Currently, existing angle grinders are usually large in size and cannot grind or cut parts located in a narrow space.
[0027] In response to the problem, the utility model provides an angle grinder, comprising: a control handle, a rotating motor is arranged in the control handle, and the rotating motor is provided with a rotatable first rotating shaft; a grinding and cutting module; a first support arm, the first support arm is provided with a through first through hole, the first support arm is connected to the control handle so that the first rotating shaft passes through the first through hole; a second support arm is fixedly connected to the first support arm, the second support arm is provided with a through second through hole, the second through hole is provided with a rotatable second rotating shaft, one end of the second rotating shaft is fixedly connected to the grinding and cutting module; a transmission module, the first rotating shaft is transmission-connected to the second rotating shaft through the transmission module, the rotating motor is used to drive the first rotating shaft to rotate, so as to drive the grinding and cutting module to rotate through the transmission module and the second rotating shaft; according to the solution provided in the embodiment of the utility model, parts located in a narrow space can be ground and cut.
[0028] The following is a further description of the embodiments of the present invention in conjunction with the accompanying drawings.
[0029] Reference Figures 1 to 3 The utility model provides an angle grinder, comprising:
[0030] A control handle 100, wherein a rotary motor (not shown in the figure) is disposed inside the control handle 100, and the rotary motor is provided with a rotatable first rotary shaft 101;
[0031] Grinding and cutting module 200;
[0032] A first support arm 300 , wherein the first support arm 300 is provided with a first through hole 311 , and the first support arm 300 is connected to the control handle 100 so that the first rotation shaft 101 passes through the first through hole 311 ;
[0033] The second arm 400 is fixedly connected to the first arm 300, and the second arm 400 is provided with a second through hole 411, and a rotatable second rotating shaft 412 is provided on the second through hole 411, and one end of the second rotating shaft 412 is fixedly connected to the grinding and cutting module 200;
[0034] The transmission module 500 , the first rotating shaft 101 is transmission-connected with the second rotating shaft 412 through the transmission module 500 , and the rotating motor is used to drive the first rotating shaft 101 to rotate, so as to drive the grinding and cutting module 200 to rotate through the transmission module 500 and the second rotating shaft 412 .
[0035] Based on this, by setting up a transmission module 500, the transmission module 500 is respectively connected to the first rotating shaft 101 and the second rotating shaft 412, the rotating motor drives the first rotating shaft 101 to rotate, and the first rotating shaft 101 is connected to the transmission module 500, so the first rotating shaft 101 drives the transmission module 500 to rotate, and the second rotating shaft 412 is connected to the transmission module 500, so the transmission module 500 drives the second rotating shaft 412 to rotate, and one end of the second rotating shaft 412 is fixedly connected to the grinding and cutting module 200, so the second rotating shaft 412 drives the grinding and cutting module 200 to rotate, thereby realizing power transmission from the rotating motor to the grinding and cutting module 200; by setting up the first support arm 300 and the second support arm 400, the distance between the grinding and cutting module 200 and the control handle 100 is extended, so that the angle grinder can extend the grinding and cutting module 200 into a narrow space alone, so that the components located in the narrow space can be ground and cut.
[0036] It is understandable that an anti-skid pattern is provided on the outer surface of the control handle 100 . When the angle grinder is used, the anti-skid pattern is used to increase the friction between the hand and the control handle 100 , so that the staff can hold the angle grinder stably.
[0037] It is understandable that the grinding and cutting module 200 can be one of a grinding block for grinding and a cutting disc for cutting, which is not limited here.
[0038] Refer again Figure 3 In some embodiments of the present invention, a bearing is disposed in the second through hole 411 , a fixed portion of the bearing is fixedly connected to an inner wall of the second through hole 411 , and a movable portion of the bearing is in contact with the second rotating shaft 412 .
[0039] It can be understood that during the operation of the angle grinder, the control handle 100 is grasped by the staff, the first arm 300 and the second arm 400 are fixed relative to the control handle 100, and the second rotating shaft 412 and the grinding and cutting module 200 rotate relative to the second arm 400. By arranging a bearing in the second through hole 411, the position and rotation direction of the second rotating shaft 412 can be limited to prevent the second rotating shaft 412 and the grinding and cutting module 200 from shaking during operation, and the friction between the second rotating shaft 412 and the second arm 400 can be reduced, thereby improving the transmission efficiency from the first rotating shaft 101 to the second rotating shaft 412; at the same time, the bearing can also reduce the friction loss between the outer surface of the second rotating shaft 412 and the inner surface of the second through hole 411, thereby extending the service life of the angle grinder.
[0040] Refer again Figure 1 and Figure 2In some embodiments of the present invention, the control handle 100 is provided with a mounting portion 110 , and the outer wall of the mounting portion 110 is in frictional contact with the inner wall of the first through hole 311 .
[0041] Specifically, the first through hole 311 and the mounting portion 110 are both cylindrical, the radius of the cross section of the first through hole 311 is equal to the radius of the cross section of the mounting portion 110, and the inner surface of the first through hole 311 and the outer surface of the mounting portion 110 are also provided with anti-slip patterns for increasing the friction between the first through hole 311 and the mounting portion 110.
[0042] It can be understood that a mounting portion 110 is provided on the control handle 100, and by extending the mounting portion 110 into the first through hole 311, the first arm 300 can be stably fixed on the control handle 100, thereby achieving relative fixation among the control handle 100, the first arm 300, the second arm 400 and the grinding and cutting module 200, and can effectively maintain relative stability among the rotating motor, the first rotating shaft 101, the transmission module 500, the second rotating shaft 412 and the grinding and cutting module 200, thereby ensuring the transmission efficiency of the rotating motor to the grinding and cutting module 200.
[0043] Refer again Figure 3 In some embodiments of the utility model, a first threaded hole 312 is formed between the outer wall of the first support arm 300 and the inner wall of the first through hole 311, and a first fixing bolt (not shown in the figure) is installed on the first threaded hole 312, and the first fixing bolt is used to fix the mounting portion 110.
[0044] It can be understood that the first fixing bolt is used to frictionally contact with the outer wall of the mounting portion 110 , so as to fix the mounting portion 110 .
[0045] Specifically, an anti-slip head is provided at the tail of the first fixing bolt. The anti-slip head is made of elastic resin. The anti-slip head can increase the friction between the first fixing bolt and the mounting portion 110 .
[0046] In some embodiments of the present invention, the outer surface of the mounting portion 110 is provided with a plurality of limiting grooves (not shown in the figure) matching with the first fixing bolts.
[0047] It can be understood that the radius of the limiting groove is equal to the radius of the tail of the first fixing bolt. When the first fixing bolt extends into the first threaded hole 312, the first fixing bolt is fixed to one of the limiting grooves. By rotating the first support arm 300, the first fixing bolt is fixed to one of the limiting grooves, and the angle between the first support arm 300 and the control handle 100 is adjusted, so that the relative position between the grinding and cutting module 200 and the control handle 100 can be adjusted.
[0048] Refer again Figure 2 In certain embodiments of the utility model, the transmission module 500 includes a first rotating block 510, a second rotating block 520 and a transmission belt 530, the first rotating block 510 is fixedly connected to the first rotating shaft 101, the second rotating block 520 is fixedly connected to the second rotating shaft 412, and the transmission belt 530 is respectively in contact with the outer surfaces of the first rotating block 510 and the second rotating block 520.
[0049] It can be understood that the first rotating block 510 and the second rotating block 520 are both cylindrical. By setting the first rotating block 510 and the second rotating block 520, the first rotating block 510 is fixedly connected to the first rotating shaft 101, and the second rotating block 520 is fixedly connected to the second rotating shaft 412. The first rotating block 510 can increase the contact area between the first rotating shaft 101 and the transmission belt 530, and the second rotating block 520 can increase the contact area between the second rotating shaft 412 and the transmission belt 530, thereby improving the transmission efficiency between the first rotating shaft 101 and the second rotating shaft 412.
[0050] In a specific implementation, the radius of the cross section of the first rotating block 510 is greater than the radius of the cross section of the second rotating block 520 , so that the rotation speed of the grinding and cutting module 200 can be increased while the rotation frequency of the rotating motor remains unchanged.
[0051] In another specific embodiment, the radius of the cross section of the first rotating block 510 is smaller than the radius of the cross section of the second rotating block 520. When the rotation frequency of the rotating motor remains unchanged, the rotation speed of the grinding and cutting module 200 is appropriately reduced, which can reduce the load of the rotating motor and extend the service life of the rotating motor.
[0052] Reference Figure 2 In some embodiments of the utility model, the first rotating block 510 and the second rotating block 520 are both cylindrical, and the two end surfaces of the first rotating block 510 are respectively provided with a first baffle 511, and the two end surfaces of the second rotating block 520 are respectively provided with a second baffle 521.
[0053] It can be understood that by respectively setting the first baffle 511 on the two end faces of the first rotating block 510 and the second baffle 521 on the two end faces of the second rotating block 520, the transmission belt 530 can be prevented from falling off the first rotating block 510 and the second rotating block 520 during the rotation of the first rotating shaft 101 and the second rotating shaft 412.
[0054] Refer again Figure 3In some embodiments of the present invention, the first support arm 300 includes a first rounded corner portion 310 and a first right-angle portion 320, the first rounded corner portion 310 is fixedly connected to the first right-angle portion 320, and the first right-angle portion 320 is fixedly connected to the second support arm 400.
[0055] In some embodiments of the present invention, the second support arm 400 includes a second rounded corner portion 410 and a second right-angle portion 320 , the second rounded corner portion 410 is fixedly connected to the second right-angle portion 320 , and the second right-angle portion 320 is fixedly connected to the first support arm 300 .
[0056] Specifically, the first through hole 311 is disposed on the first rounded corner portion 310 , the second through hole 411 and the bearing are disposed on the second rounded corner portion 410 , and the first right-angle portion 320 and the second right-angle portion 320 are fixedly connected.
[0057] It can be understood that the first right-angle portion 320 is fixedly connected to the second right-angle portion 320. When a staff member holds an angle grinder and extends the angle grinder into a box for grinding or cutting, the first right-angle portion 320 and the second right-angle portion 320 do not contact the box. Instead, the first rounded portion 310 and the second rounded portion 410 face the box, thereby preventing the first arm 300 or the second arm 400 from scratching the box.
[0058] Refer again Figure 3 In some embodiments of the utility model, a second threaded hole 321 is provided on the first arm 300, and a third threaded hole 421 is provided on the second arm 400. Second fixing bolts (not shown in the figure) are installed on the second threaded hole 321 and the third threaded hole 421, and the second fixing bolts are used to fix the first arm 300 and the second arm 400.
[0059] Specifically, the second threaded hole 321 is disposed on the first right-angle portion 320 , and the third threaded hole 421 is disposed on the second right-angle portion 420 .
[0060] It is understandable that the first arm 300 is provided with a second threaded hole 321 , and the second arm 400 is provided with a third threaded hole 421 . By installing a second fixing bolt on the second threaded hole 321 and the third threaded hole 421 , the first arm 300 and the second arm 400 can be relatively fixed.
[0061] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in the relevant technical field without departing from the purpose of the present invention.
Claims
1. An angle grinder, characterized in that: include: A control handle, wherein a rotary motor is disposed in the control handle, and the rotary motor is provided with a rotatable first rotary shaft; Grinding and cutting module; a first support arm, wherein the first support arm is provided with a first through hole, and the first support arm is connected to the control handle so that the first rotation axis passes through the first through hole; A second support arm is fixedly connected to the first support arm, the second support arm is provided with a second through hole, the second through hole is provided with a rotatable second rotating shaft, one end of the second rotating shaft is fixedly connected to the grinding and cutting module; The transmission module, the first rotating shaft is connected to the second rotating shaft through the transmission module, and the rotating motor is used to drive the first rotating shaft to rotate, so as to drive the grinding and cutting module to rotate through the transmission module and the second rotating shaft.
2. The angle grinder according to claim 1, characterized in that: A bearing is disposed in the second through hole, a fixed portion of the bearing is fixedly connected to an inner wall of the second through hole, and a movable portion of the bearing is in contact with the second rotating shaft.
3. The angle grinder according to claim 1, characterized in that: The control handle is provided with a mounting portion, and an outer wall of the mounting portion is in frictional contact with an inner wall of the first through hole.
4. The angle grinder according to claim 3, characterized in that: A first threaded hole is formed between the outer wall of the first support arm and the inner wall of the first through hole. A first fixing bolt is installed on the first threaded hole. The first fixing bolt is used to fix the mounting portion.
5. The angle grinder according to claim 4, characterized in that: The outer surface of the mounting portion is provided with a plurality of limiting grooves matching the first fixing bolts.
6. The angle grinder according to claim 1, characterized in that: The transmission module includes a first rotating block, a second rotating block and a transmission belt, the first rotating block is fixedly connected to the first rotating shaft, the second rotating block is fixedly connected to the second rotating shaft, and the transmission belt is respectively in contact with the outer surfaces of the first rotating block and the second rotating block.
7. The angle grinder according to claim 6, characterized in that: The first rotating block and the second rotating block are both cylindrical, two end surfaces of the first rotating block are respectively provided with first baffles, and two end surfaces of the second rotating block are respectively provided with second baffles.
8. The angle grinder according to claim 1, characterized in that: The first support arm includes a first rounded corner portion and a first right-angle portion, the first rounded corner portion is fixedly connected to the first right-angle portion, and the first right-angle portion is fixedly connected to the second support arm.
9. The angle grinder according to claim 1, characterized in that: The second support arm includes a second rounded corner portion and a second right-angle portion, the second rounded corner portion is fixedly connected to the second right-angle portion, and the second right-angle portion is fixedly connected to the first support arm.
10. The angle grinder according to claim 1, characterized in that: A second threaded hole is provided on the first arm, a third threaded hole is provided on the second arm, and second fixing bolts are installed on the second threaded hole and the third threaded hole. The second fixing bolts are used to fix the first arm and the second arm.