Handheld machine tool with handle and dust collection seat

Abstract

The utility model discloses a hand-held machine tool with a handle and a dust collection seat, which is characterized in that a negative pressure pipe is arranged on a cover seat, so that the negative pressure pipe is connected to negative pressure equipment, negative pressure is generated in a cover cavity to absorb chippings generated by work of tool pieces, and the cleaning after processing is more convenient.

Description

Technical Field

[0001] The utility model belongs to the field of handheld machine tools, and in particular relates to a handheld machine tool with a handle and a dust suction seat. Background Art

[0002] Handheld machine tools are widely used, such as angle grinders, polishers, etc. The specific principles can be found in the following patents:

[0003] Chinese patent number CN202121523372.4 discloses an angle grinder for communication engineering, in which a grinding disc is fixedly installed on the output shaft of the angle grinder body, so that the angle grinder body can be used by rotating the output shaft of the angle grinder body to rotate the grinding disc. In addition, a knife cover is also provided on the angle grinder body to cover the grinding disc to a certain extent and play a protective role.

[0004] The double-track eccentric structure polishing machine disclosed in Chinese patent number CN201510052568.2 adopts the method of fixing the eccentric block on the output shaft of the machine body to drive the eccentric block to rotate eccentrically so as to rotate the polishing disc for polishing. In addition, a polishing cover is provided on the machine body to cover and protect the eccentric block.

[0005] Among them, different tool parts (such as the grinding sheet in the first patent, the eccentric wheel and the polishing disc combination in the second patent) are installed to form structures with different functions.

[0006] The shortcomings of the above patents are that both grinding and polishing will affect the processed products and generate debris, and the above structures do not have corresponding structures to collect the debris, causing the debris to splash and making subsequent cleaning complicated. Utility Model Content

[0007] In view of the shortcomings of the prior art, the purpose of the utility model is to provide a handheld machine tool with a handle and a dust suction seat. By arranging a negative pressure tube on the cover seat so that the negative pressure tube is connected to the negative pressure device, negative pressure is generated in the cover cavity to absorb the debris generated by the work of the tool, so that the cleaning after processing is more convenient.

[0008] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: comprising: a hand-held seat, a hand-held portion is provided at the rear end of the hand-held seat, and an output shaft is provided at the front end; an auxiliary handle, the auxiliary handle is provided at the front end of the hand-held seat for holding; a tool piece, the tool piece is detachably provided on the output shaft; a cover seat, the cover seat is detachably provided on the hand-held seat, a cover cavity is provided in the cover seat, so that the output shaft and part of the structure of the tool piece can be covered by the cover cavity, a negative pressure tube is provided on the cover seat, one end of the negative pressure tube is provided with a connecting port for connecting with a negative pressure device, and the other end is connected with the cover cavity.

[0009] The utility model is further configured as follows: the tool part includes a mounting rod, a locking pressure ring, a first locking bolt and a grinding roller, the outer periphery of the grinding roller is provided with a grinding surface, the length end of the mounting rod is connected to the output shaft, the grinding roller is axially penetrated with a mounting socket, so that the mounting socket is sleeved on the outer periphery of the mounting rod, the outer periphery of the mounting rod is provided with a first positioning portion that abuts against the grinding roller, and the first positioning portion is located at one end of the grinding roller facing the output shaft, the axial end of the mounting rod away from the output shaft is provided with a threaded hole, the first locking bolt passes through the locking pressure ring, and is threadedly matched with the threaded hole to abut the locking pressure ring against the grinding roller.

[0010] The utility model is further configured as follows: the cover seat is located at one end of the grinding roller away from the output shaft and is detachably provided with an anti-disassembly cover, and the anti-disassembly cover is used to limit the first locking bolt from being disassembled from the mounting rod.

[0011] The utility model is further configured as follows: the anti-disassembly cover is provided with a mounting portion located on the outer periphery of the cover seat, and a plurality of first mounting through-holes are provided on the mounting portion; second mounting through-holes are provided on the cover seat corresponding to each mounting through-hole, and a first mounting bolt and a mounting nut are provided between each of the first mounting through-holes and the corresponding second mounting through-hole, and each first mounting bolt passes through the first mounting through-hole and the second mounting through-hole and is threadedly matched with the mounting nut; or first mounting screw holes are provided on the cover seat corresponding to each mounting through-hole, and a first mounting bolt is provided between each of the first mounting through-holes and the corresponding first mounting screw hole, and each first mounting bolt passes through the first mounting through-hole and is threadedly matched with the first mounting screw hole.

[0012] The utility model is further configured as follows: the auxiliary handle includes an extension section and a grip section, one end of the extension section is connected to the hand-held seat, and the other end is connected to the grip section, the length direction of the extension section is perpendicular to the axial direction of the output shaft, and the length direction of the grip section is parallel to the axial direction of the output shaft.

[0013] The utility model is further configured as follows: the tool part includes an eccentric seat and a polishing disc installed on the eccentric seat, the eccentric seat is arranged on the output shaft, the eccentric seat is located in the cover cavity, the polishing disc is located outside the cover seat, a polishing surface is arranged on the side of the polishing disc away from the cover seat, a plurality of dust suction holes are penetrated on the polishing disc, one end of each of the dust suction holes penetrates to the polishing surface, and the other end penetrates toward the cover seat.

[0014] The utility model is further configured as follows: the tool part also includes an output seat and a second locking bolt, the output seat is rotatably arranged on the eccentric seat, and the output seat is eccentrically arranged relative to the rotation axis of the eccentric seat and the axis of the output shaft, the polishing plate is provided with a third mounting through hole, the output seat is provided with a third mounting screw hole, the second locking bolt passes through the third mounting through hole and is threadedly matched with the third mounting screw hole.

[0015] The utility model is further configured as follows: a plurality of anti-rotation plug posts are arranged along the circumferential direction at one end of the output seat facing the polishing disc, and anti-rotation plug holes are arranged on the polishing disc corresponding to each anti-rotation plug post.

[0016] The utility model is further configured as follows: the output seat includes a connecting body and a stop body, the connecting body is installed on the eccentric seat, the third mounting screw hole is arranged on the connected body, each of the stop pins is arranged on the stop body, the stop body is provided with a matching slot for the connecting body to be inserted, a first stop plane is provided on the inner circumferential wall of the matching slot, and a second stop plane is provided on the outer circumferential wall of the connecting body, the first stop plane and the second stop plane are parallel and fitted to limit the relative circumferential rotation of the connecting body and the stop body.

[0017] The utility model is further configured as follows: the tool part also includes a rotating bearing and a second mounting bolt. The eccentric seat is provided with a mounting hole, the rotating bearing is arranged in the mounting hole, the output seat is inserted into the inner circumference of the rotating bearing, and the output seat is located at one axial end of the rotating bearing and is provided with a second positioning portion that abuts against the rotating bearing. The second mounting bolt is located at one end of the rotating bearing away from the output seat and is inserted into the inner circumference of the rotating bearing and is threadedly engaged with the third mounting screw hole.

[0018] By adopting the above technical solution, a negative pressure tube is arranged on the cover seat so that the negative pressure tube is connected to the negative pressure equipment to generate negative pressure in the cover cavity to absorb the debris generated by the tool work, so that the cleaning after processing is more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 This is an assembly diagram of the first embodiment of the utility model;

[0021] Figure 2 This is an exploded view of the first embodiment of the utility model;

[0022] Figure 3 It is a cross-sectional view of the first embodiment of the utility model;

[0023] Figure 4 An exploded view of a part of the structure of an embodiment of the utility model;

[0024] Figure 5 This is an assembly diagram of the second embodiment of the utility model;

[0025] Figure 6 This is an exploded view of the second embodiment of the present utility model;

[0026] Figure 7 It is a cross-sectional view of the second embodiment of the utility model;

[0027] Figure 8 It is an exploded view of the partial structure of the second embodiment of the utility model;

[0028] Fig. 9 for Figure 8 A partial enlarged view of .

[0029] Labels: 1. Hand-held seat; 11. Hand-held part; 12. Output shaft; 2. Auxiliary handle; 21. Extension section; 22. Gripping section; 3. Tool piece; 31. Mounting rod; 32. Grinding roller; 33. Eccentric seat; 34. Polishing disc; 35. Output seat; 36. Second locking bolt; 37. Rotating bearing; 38. Second mounting bolt; 311. Locking pressure ring; 312. First locking bolt; 313. First positioning part; 314. Threaded hole; 321. Grinding surface; 322. Mounting socket; 331. Mounting hole; 341. Polishing surface; 342. Dust suction hole; 343. Third installation hole; 344. Anti-rotation plug hole; 351. Third installation screw hole; 352. Anti-rotation plug column; 353. Connecting body; 354. Anti-rotation body; 355. Matching slot; 356. First anti-rotation plane; 357. Second anti-rotation plane; 358. Second positioning part; 4. Cover seat; 41. Clamp; 42. Cover cavity; 43. Negative pressure tube; 44. Anti-disassembly cover; 45. First installation screw hole; 431. Connecting port; 441. Installation part; 442. First installation hole; 51. First installation bolt. DETAILED DESCRIPTION

[0030] In order to enable those skilled in the art to better understand the present invention, and thus to more clearly define the scope of protection claimed by the present invention, the present invention is described in detail below with respect to certain specific embodiments of the present invention. It should be noted that the following are only certain specific implementation methods of the present invention, which are only part of the embodiments of the present invention, wherein the specific and direct description of the relevant structures is only for the convenience of understanding the present invention, and each specific feature does not naturally and directly limit the scope of implementation of the present invention. The conventional selections and substitutions made by those skilled in the art under the guidance of the present invention shall be deemed to be within the scope of protection claimed by the present invention.

[0031] Embodiment 1:

[0032] like Figure 1-Figure 4 As shown, the utility model discloses a handheld machine tool with a handle and a dust suction seat, comprising:

[0033] A hand-held seat 1, wherein a hand-held portion 11 is disposed at the rear end of the hand-held seat 1, and an output shaft 12 is disposed at the front end, and the axial direction of the output shaft 12 is disposed to the right;

[0034] An auxiliary handle 2, which is arranged on the right side of the front end of the hand-held seat 1 for holding;

[0035] The tool piece 3 is a grinding structure, and the tool piece 3 is installed on the output shaft 12 by threaded fitting, and the circumferential rotation limit of the tool piece 3 and the output shaft 12 is realized by eccentric plugging, a pressure plate, etc., so that the tool piece 3 can be driven by the output shaft 12 to output, and the tool piece 3 can be removed to realize detachable installation;

[0036] The cover seat 4 is detachably mounted on the hand-held seat 1 by means of a clamp 41, wherein a cover cavity 42 is arranged inside the cover seat 4, so that the output shaft 12 and part of the structure of the tool part 3 can be covered and protected by the cover cavity 42, while the part of the structure of the tool part 3 extending out of the cover cavity 42 can be polished. In addition, a negative pressure pipe 43 inclined upward is arranged on the rear side of the cover seat 4, and a connecting port 431 is arranged at the rear end of the negative pressure pipe 43 for connecting with a negative pressure device, while the front end is connected to the cover cavity 42.

[0037] Therefore, the hand-held part 11 and the auxiliary handle 2 are held by both hands respectively, and the tool 3 is driven when the output shaft 12 is in the working state, so that the tool 3 part extending out of the housing cavity 42 is polished outside, and the debris generated by polishing makes the housing cavity 42 present negative pressure due to the negative pressure device, so that the debris close to the housing cavity 42 will be sucked into the housing cavity 42 under the negative pressure state of the housing cavity 42, and can be further collected and discharged through the negative pressure pipe 43. In addition, the negative pressure pipe 43 also absorbs the surrounding odor air, smoke, etc.

[0038] Specifically, the tool part 3 in this embodiment includes a mounting rod 31, a locking pressure ring 311, a first locking bolt 312 and a grinding roller 32. The axial direction of the grinding roller 32 is along the left-right direction, and a cylindrical grinding surface 321 is provided on the outer periphery. The left end of the length of the mounting rod 31 is connected to the output shaft 12, and the grinding roller 32 is penetrated by a mounting socket 322 along the left-right direction, so that the mounting socket 322 is sleeved on the outer periphery of the mounting rod 31 for adaptive installation. In addition, the outer periphery of the mounting rod 31 is integrally formed with a first positioning portion 313 that abuts against the left end of the grinding roller 32. Correspondingly, a threaded hole 314 is provided at the axial right end of the mounting rod 31, and the first locking bolt 312 passes through the locking pressure ring 311 and is threadedly matched with the threaded hole 314 to abut the locking pressure ring 311 against the grinding roller 32.

[0039] Therefore, the grinding roller 32 is installed on the mounting rod 31 in a sleeve manner, and the left end is positioned under the action of the first positioning portion 313, and the locking pressure ring 311 is pressed to the right end of the grinding roller 32 under the action of the first locking bolt 312 to fix the grinding roller 32, so that the rotation of the output shaft 12 can drive the rotation of the grinding roller 32 by driving the rotation of the mounting rod 31, so that the grinding surface 321 on the outer periphery of the grinding roller 32 can be used for grinding. In addition, after long-term use, the grinding roller 32 can be disassembled and replaced by removing the first locking bolt 312, and the replacement is more convenient.

[0040] The cover seat 4 in this embodiment is located at the right end of the grinding roller 32 and is detachably provided with an anti-disassembly cover 44, which is located on the rightward movement trajectory of the first locking bolt 312 to limit the first locking bolt 312 from being removed from the mounting rod 31.

[0041] Therefore, when the anti-disassembly cover 44 is installed on the cover seat 4, the anti-disassembly cover 44 has the ability to limit the disassembly of the first locking bolt 312, thereby preventing the first locking bolt 312, the locking pressure ring 311, and the grinding roller 32 from flying out and causing danger when the first locking bolt 312 is loosened.

[0042] Specifically, the anti-dismantling cover 44 in this embodiment is located on the outer periphery of the cover seat 4 and is provided with a semicircular arc-shaped mounting portion 441, so that it is fitted to the outer periphery of the cover seat 4 through the mounting portion 441. In addition, the front and rear sides and the upper side of the mounting portion 441 are provided with first mounting through-holes 442; correspondingly, the cover seat 4 is provided with first mounting screw holes 45 corresponding to each mounting through-hole, and a first mounting bolt 51 is provided between each first mounting through-hole 442 and the corresponding first mounting screw hole 45. Each first mounting bolt 51 passes through the first mounting through-hole 442 and is threadedly matched with the first mounting screw hole 45, so as to make the disassembly and assembly of the anti-dismantling cover 44 more convenient.

[0043] In other embodiments, a second mounting through-hole is respectively provided on the cover seat 4 corresponding to each mounting through-hole, a first mounting bolt 51 and a mounting nut are provided between each first mounting through-hole 442 and the corresponding second mounting through-hole, each first mounting bolt 51 passes through the first mounting through-hole 442 and the second mounting through-hole, and cooperates with the mounting nut thread.

[0044] The first mounting bolt 51 is a hand-tightened bolt.

[0045] Preferably, the auxiliary handle 2 in this embodiment includes an extension section 21 and a grip section 22, one end of the extension section 21 is connected to the hand-held seat 1, and the other end is connected to the grip section 22, the length direction of the extension section 21 is perpendicular to the axial direction of the output shaft 12, and the length direction of the grip section 22 is parallel to the axial direction of the output shaft 12, so that the extension section 21 can maintain a suitable distance between the grip section 22 and the cover seat 4 to ensure that it is not disturbed by the cover seat 4 when holding, and the grip section 22 parallel to the output shaft 12 makes the holding more comfortable.

[0046] Embodiment 2:

[0047] like Figure 5-Figure 9 As shown, the utility model discloses a handheld machine tool with a handle and a dust suction seat, comprising:

[0048] A hand-held seat 1, wherein a hand-held portion 11 is disposed at the rear end of the hand-held seat 1, and an output shaft 12 is disposed at the front end, and the axial direction of the output shaft 12 is disposed downward;

[0049] An auxiliary handle 2, which is arranged on the right side of the front end of the hand-held seat 1 for holding;

[0050] The tool piece 3 is a polishing structure, and the tool piece 3 is installed on the output shaft 12 by threaded fitting, and the circumferential rotation limit of the tool piece 3 and the output shaft 12 is realized by eccentric plugging, a pressure plate, etc., so that the tool piece 3 can be driven by the output shaft 12 to output, and the tool piece 3 can be removed to realize detachable installation;

[0051] The cover seat 4 is detachably mounted on the hand-held seat 1 by means of a clamp 41, wherein a cover cavity 42 is arranged inside the cover seat 4, so that the output shaft 12 and part of the structure of the tool part 3 can be covered and protected by the cover cavity 42, while part of the structure of the tool part 3 extending out of the cover cavity 42 can be polished. In addition, a negative pressure pipe 43 tilted backward is arranged on the left side of the cover seat 4, and a connecting port 431 is arranged at the left end of the negative pressure pipe 43 for connecting with a negative pressure device, while the right end is connected to the cover cavity 42.

[0052] Therefore, by holding the hand-held part 11 and the auxiliary handle 2 with both hands, the tool piece 3 is driven in the working state of the output shaft 12, so that the part of the tool piece 3 extending out of the housing cavity 42 is polished outside, and the debris generated by polishing makes the housing cavity 42 present a negative pressure due to the negative pressure device, so that the debris close to the housing cavity 42 will be sucked into the housing cavity 42 under the negative pressure state of the housing cavity 42, and can be further collected and discharged through the negative pressure pipe 43. In addition, the negative pressure pipe 43 also absorbs the surrounding odor air, smoke, etc.

[0053] Specifically, the tool part 3 in this embodiment includes an eccentric seat 33 and a polishing disk 34 installed under the eccentric seat 33, the eccentric seat 33 is arranged on the output shaft 12, the eccentric seat 33 is located in the cover cavity 42, the polishing disk 34 is located outside the cover seat 4, and a polishing surface 341 is arranged on the lower side of the polishing disk 34. A plurality of dust suction holes 342 are penetrated on the polishing disk 34, and each of the dust suction holes 342 has one end downwardly penetrating to the polishing surface 341 and the other end penetrating upward so that the upper end of the dust suction hole 342 faces the cover seat 4.

[0054] Therefore, the debris generated by polishing the polishing surface 341 can also be sucked upward into the cover cavity 42 through the dust suction holes 342, so that the dust suction effect is better.

[0055] Specifically, the tool part 3 in this embodiment also includes an output seat 35 and a second locking bolt 36. The output seat 35 is rotatably arranged below the eccentric seat 33, and the output seat 35 is eccentrically arranged relative to the rotation axis of the eccentric seat 33 and the axis of the output shaft 12. The polishing plate 34 is provided with a third mounting through hole 343, and the output seat 35 is provided with a third mounting screw hole 351. The second locking bolt 36 penetrates the third mounting through hole 343 and is threadedly matched with the third mounting screw hole 351.

[0056] Therefore, 1. the output shaft 12 drives the eccentric seat 33 to rotate, and the eccentrically arranged output seat 35 causes the polishing disc 34 to rotate eccentrically, and 2. the polishing disc 34 is detachably mounted on the output seat 35 by the second locking bolt 36 for convenient disassembly, assembly and replacement.

[0057] Preferably, the output seat 35 in this embodiment is provided with three anti-rotation pins 352 along the circumferential direction at one end facing the polishing disk 34, and correspondingly, the polishing disk 34 is provided with an anti-rotation hole 344 corresponding to each anti-rotation pin 352, so that the circumferential rotation of the output seat 35 and the polishing disk 34 can be limited by the cooperation of the anti-rotation pins 352 and the anti-rotation holes 344 to prevent the second locking bolt 36 from loosening due to rotation.

[0058] Preferably, the output seat 35 in this embodiment includes a connecting body 353 and a stop body 354, the connecting body 353 is installed on the eccentric seat 33, the third mounting screw hole 351 is arranged on the connected body, each of the stop pins 352 is arranged on the stop body 354, and a matching slot 355 is arranged on the upper end of the stop body 354 for the connecting body 353 to be inserted, and in addition, a first stop plane 356 is arranged on the inner peripheral wall of the matching slot 355, and a second stop plane 356 is arranged on the outer peripheral wall of the connecting body 353. The rotating plane 357, the first anti-rotation plane 356 and the second anti-rotation plane 357 are parallel to each other to limit the relative circumferential rotation of the connecting body 353 and the anti-rotation body 354. Therefore, the connecting body 353 installed on the eccentric seat 33 and the anti-rotation body 354 installed on the polishing disk 34 are separately arranged. If an excessive torque is generated between the polishing disk 34 and the eccentric seat 33, resulting in the anti-rotation pin 352 breaking, only the anti-rotation part needs to be replaced, and there is no need to disassemble the connecting body 353, so the replacement is more convenient.

[0059] Specifically, the tool part 3 in this embodiment also includes a rotating bearing 37 and a second mounting bolt 38. A cylindrical mounting hole 331 is provided at the lower end of the eccentric seat 33. The rotating bearing 37 is arranged in the mounting hole 331. The output seat 35 is inserted into the inner circumference of the rotating bearing 37 from bottom to top, and the output seat 35 is located at the lower end of the rotating bearing 37 and is provided with a second positioning portion 358 that resists the rotating bearing 37. Correspondingly, the second mounting bolt 38 is located at the upper end of the rotating bearing 37, and is inserted downward into the inner circumference of the rotating bearing 37, and is inserted into the inner thread of the output seat 35 to cooperate with the third mounting screw hole 351.

[0060] Therefore, the smoothness of rotation of the output seat 35 is improved by the rotating bearing 37 , and the output seat 35 is stably mounted on the rotating bearing 37 by the second positioning portion 358 and the second mounting bolt 38 .

[0061] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A handheld machine tool with a handle and a dust suction base, characterized in that: include: A hand-held seat (1), wherein a hand-held portion (11) is provided at the rear end of the hand-held seat (1) and an output shaft (12) is provided at the front end; An auxiliary handle (2), the auxiliary handle (2) being arranged at the front end of the hand-held seat (1) for holding; A tool part (3), wherein the tool part (3) is detachably arranged on the output shaft (12); A cover seat (4), the cover seat (4) being detachably mounted on the hand-held seat (1), a cover cavity (42) being arranged inside the cover seat (4), so that the output shaft (12) and a part of the structure of the tool part (3) can be covered through the cover cavity (42), a negative pressure pipe (43) being arranged on the cover seat (4), one end of the negative pressure pipe (43) being provided with a connection port (431) for connecting to a negative pressure device, and the other end being in communication with the cover cavity (42).

2. The handheld power tool with a handle and a dust suction base according to claim 1, characterized in that: The tool part (3) comprises a mounting rod (31), a locking pressure ring (311), a first locking bolt (312) and a grinding roller (32); a grinding surface (321) is arranged on the outer periphery of the grinding roller (32); one end of the mounting rod (31) is connected to the output shaft (12); a mounting socket (322) is arranged through the grinding roller (32) along the axial direction so that the mounting socket (322) is sleeved on the outer periphery of the mounting rod (31); the mounting rod (31) A first positioning portion (313) that abuts against the grinding roller (32) is provided on the outer periphery of the grinding roller (32), and the first positioning portion (313) is located at one end of the grinding roller (32) facing the output shaft (12), and a threaded hole (314) is provided at one end of the mounting rod (31) axially away from the output shaft (12), and the first locking bolt (312) passes through a locking pressure ring (311) and is threadedly matched with the threaded hole (314) to abut the locking pressure ring (311) against the grinding roller (32).

3. The handheld power tool with a handle and a dust suction base according to claim 2, characterized in that: The cover seat (4) is located at one end of the grinding roller (32) away from the output shaft (12) and is detachably provided with an anti-disassembly cover (44), and the anti-disassembly cover (44) is used to limit the first locking bolt (312) from being removed from the mounting rod (31).

4. The handheld power tool with a handle and a dust suction base according to claim 3, characterized in that: The anti-disassembly cover (44) is provided with a mounting portion (441) located on the outer periphery of the cover seat (4), and the mounting portion (441) is provided with a plurality of first mounting through holes (442); the cover seat (4) is provided with a second mounting through hole corresponding to each mounting through hole, and a first mounting bolt (51) and a mounting nut are provided between each first mounting through hole (442) and the corresponding second mounting through hole, and each first mounting bolt (51) passes through the first mounting through hole (442) and the second mounting through hole and is threadedly matched with the mounting nut; or, The cover seat (4) is provided with a first mounting screw hole (45) corresponding to each mounting through hole, and a first mounting bolt (51) is provided between each first mounting through hole (442) and the corresponding first mounting screw hole (45). Each first mounting bolt (51) passes through the first mounting through hole (442) and is threadably matched with the first mounting screw hole (45).

5. The handheld power tool with a handle and a dust suction base according to claim 2, characterized in that: The auxiliary handle (2) comprises an extension section (21) and a grip section (22); one end of the extension section (21) is connected to the grip seat (1) and the other end is connected to the grip section (22); the length direction of the extension section (21) is perpendicular to the axial direction of the output shaft (12); and the length direction of the grip section (22) is parallel to the axial direction of the output shaft (12).

6. The handheld power tool with a handle and a dust suction base according to claim 1, characterized in that: The tool part (3) comprises an eccentric seat (33) and a polishing disc (34) mounted on the eccentric seat (33); the eccentric seat (33) is arranged on the output shaft (12); the eccentric seat (33) is located in the cover cavity (42); the polishing disc (34) is located outside the cover seat (4); a polishing surface (341) is arranged on the side of the polishing disc (34) facing away from the cover seat (4); a plurality of dust suction through holes (342) are arranged through the polishing disc (34); one end of each of the dust suction through holes (342) penetrates to the polishing surface (341) and the other end penetrates toward the cover seat (4).

7. The handheld power tool with a handle and a dust suction base according to claim 6, characterized in that: The tool part (3) further comprises an output seat (35) and a second locking bolt (36); the output seat (35) is rotatably arranged on the eccentric seat (33), and the output seat (35) is eccentrically arranged relative to the rotation axis of the eccentric seat (33) and the axis of the output shaft (12); the polishing disc (34) is provided with a third mounting through hole (343); the output seat (35) is provided with a third mounting screw hole (351); the second locking bolt (36) penetrates the third mounting through hole (343) and is threadedly matched with the third mounting screw hole (351).

8. The handheld power tool with a handle and a dust suction base according to claim 7, characterized in that: A plurality of anti-rotation plug posts (352) are arranged along the circumferential direction at one end of the output seat (35) facing the polishing disc (34), and an anti-rotation plug hole (344) is arranged on the polishing disc (34) corresponding to each anti-rotation plug post (352).

9. The handheld power tool with a handle and a dust suction base according to claim 8, characterized in that: The output seat (35) includes a connecting body (353) and a stop body (354), the connecting body (353) is installed on the eccentric seat (33), the third mounting screw hole (351) is arranged on the connected body, each of the stop pins (352) is arranged on the stop body (354), the stop body (354) is provided with a matching slot (355) for the connecting body (353) to be inserted, a first stop plane (356) is arranged on the inner peripheral wall of the matching slot (355), and a second stop plane (357) is arranged on the outer peripheral wall of the connecting body (353), and the first stop plane (356) and the second stop plane (357) are parallel to each other to limit the relative circumferential rotation of the connecting body (353) and the stop body (354).

10. The handheld power tool with a handle and a dust suction base according to claim 7, characterized in that: The tool part (3) also includes a rotating bearing (37) and a second mounting bolt (38). The eccentric seat (33) is provided with a mounting hole (331), the rotating bearing (37) is arranged in the mounting hole (331), the output seat (35) is inserted into the inner periphery of the rotating bearing (37), and the output seat (35) is located at one axial end of the rotating bearing (37) and is provided with a second positioning portion (358) that abuts against the rotating bearing (37). The second mounting bolt (38) is located at one end of the rotating bearing (37) away from the output seat (35), is inserted into the inner periphery of the rotating bearing (37), and is threadedly engaged with the third mounting screw hole (351).

Images