TWI887848B - Auxiliary handle for power tool - Google Patents

Abstract

The present invention relates to an auxiliary handle for power tool including a collar clamp, a handle body, two first tightening units, two second tightening units, a shaft, and a clamping element. The two first tightening units are connected to the handle body, and each first tightening unit has a first engaging portion. Each second tightening unit has a second engaging portion and an inclined guiding surface. The shaft is mounted through the two first tightening units, the two second tightening units, and the collar clamp. Under a loosening condition, the collar clamp can rotate around a power tool to adjust a position of the handle body, and the handle body and the two first tightening units can rotate relative to the two second tightening units and the collar clamp to adjust an angle between the handle body and the collar clamp according to comfort or space of operation. When tightening, the two first tightening units approach each other and push the two second tightening units to contract the collar clamp; at the same time, the clamping element is guided by the inclined guiding surface to push the two first tightening units, such that the first engaging portion is engaged with the second engaging portion, which allows the angle between the handle body and the collar clamp to be fixed.

Description

Power tool auxiliary grip

The present invention relates to a power tool, in particular to an auxiliary grip for a power tool.

Power tools generally refer to tools with a power source. The power source can be an electric motor, an internal combustion engine, or air pressure, which drives the connected mechanism to operate. Due to the power source, power tools have a certain weight, especially larger power tools. Therefore, when operators hold and operate power tools, they generally use an auxiliary grip to assist in holding.

An existing auxiliary grip for a power tool includes a grip body and a collar. The grip body is disposed on the collar. When operating, the collar is put on the power tool to tighten it. The operator can hold the grip body with one hand and support the grip of the power tool with the other hand, thereby stably holding the power tool. After the collar is loosened, it can rotate around the power tool. The grip body can be rotated to the left or right side of the power tool, so that operators with different hand habits can use it.

However, the existing auxiliary handles mentioned above cannot have the function of adjusting the handle body in both axial and radial directions at the same time, that is, the handle body can only be rotated to different sides of the power tool through the collar as mentioned above, but the handle body and the power tool can only be roughly perpendicular to each other and the angle cannot be adjusted, making the existing auxiliary handles more difficult to adjust according to the operator's usage habits or the activity space during use. In view of this, the applicant came up with the present invention to solve the above dilemma.

In order to solve the problem that the existing auxiliary grips for power tools are difficult to adjust according to the operator's usage habits or the space for movement during use, the purpose of the present invention is to provide a power tool auxiliary grip that can adjust the angle of the grip body relative to the collar.

The invention solves the technical problem of an auxiliary grip for a power tool, which comprises: a grip body; two first fasteners, the two first fasteners are combined with the grip body, each of the first fasteners is provided with a first bite portion; two second fasteners, the two second fasteners are arranged between the two first fasteners, and each of the second fasteners is provided with a second bite portion and a through hole; a set of rings, which can be received by the two second fasteners The handle body is provided with two through holes which are opposite to each other in a straight line; and a middle rod which penetrates the through holes of the two first fasteners, the two second fasteners and the two through holes of the sleeve ring, so that the two first fasteners can move along the middle rod relative to the grip body to approach or move away from each other, and the middle rod can move radially along the through holes and the through holes; wherein the two first fasteners can approach each other and press against the two second fasteners. The first fastener is provided with a plurality of fasteners, so that the first engaging portion and the second engaging portion engage with each other and the first fastener cannot rotate relative to the second fastener; the two first fasteners can also be separated from each other, so that the middle rod can move along the through hole and the through hole radially to drive the first fastener to separate the first engaging portion from the second engaging portion, so that the handle body and the first fastener can rotate relative to the second fastener. The fastener and the ring rotate; each of the second fasteners is provided with a guide bevel, the auxiliary handle includes a clamping piece, the clamping piece includes two bevels, the two bevels are respectively abutted against the guide bevels of the two second fasteners, when the two second fasteners are pressed by the two first fasteners, the clamping piece is guided by the guide bevels and presses against the first fastener, so that the first bite part and the second bite part bite.

The auxiliary grip of the power tool, wherein the clamping piece is provided with two auxiliary bite parts, and when the clamping piece abuts against the two first fasteners to make the first bite part and the second bite part bite, each of the auxiliary bite parts bites with the first bite part of the corresponding one of the first fasteners.

The auxiliary grip of the power tool, wherein one of the first fasteners is provided with a snap-in hole, the middle rod is provided with a snap-in head at one end, the snap-in head is snap-into the snap-in hole and combined with the first fastener, the auxiliary grip of the power tool includes a knob, the knob is screwed to the other end of the middle rod, and can be rotated to push against the other first fastener and bring the two first fasteners closer together.

The auxiliary grip of the power tool, wherein the first engaging portion has a tooth-shaped structure, and the second engaging portion includes a plurality of arc-shaped engaging teeth to engage with the tooth-shaped structure of the first engaging portion.

The auxiliary grip of the power tool, wherein each of the second fasteners is provided with an arc portion having an arc-shaped structure, and the two second fasteners can be attached to the ring from both sides of the ring with the arc portion.

The auxiliary handle of the power tool, wherein the handle body is provided with two receiving holes, the two receiving holes are linearly opposite to each other, each of the first fasteners is received in one of the corresponding receiving holes and engaged with the corresponding receiving hole, so that the first fastener is combined with the handle body.

The auxiliary grip of the power tool, wherein the collar includes two inserting parts, the two inserting parts extend in opposite directions, and each of the inserting parts is inserted into a corresponding one of the second fasteners.

The technical means of the present invention can achieve improved efficacy in the following ways:

1. The auxiliary grip of the power tool of the present invention can simultaneously separate the first engaging portion of the first fastener and the second engaging portion of the second fastener when the ring is to be loosened, thereby allowing the auxiliary grip to rotate around the power tool with the ring to adjust the position of the grip body relative to the power tool according to the dominant hand of different operators, and at the same time, the grip body and the first fastener can rotate relative to the second fastener and the ring, allowing the operator to adjust the angle of the grip body relative to the ring according to the comfort of use or the size of the operating space.

2. When the auxiliary grip of the power tool of the present invention is to be tightened after adjustment, the two first fasteners are brought close together to press against the two second fasteners to drive the ring to shrink, so that the ring is tightly sleeved on the power tool to fix the position of the grip body relative to the power tool, and the first bite portion of the first fastener is engaged with the second bite portion of the second fastener, so that the grip body and the ring cannot rotate relative to each other, thereby fixing the angle of the grip body relative to the ring.

10: Ring

11: Extension

12: Perforation

13: Insertion

14: Positioning the convex part

20: Grip body

21: Accommodation hole

30,30A: First fastener

31: First bite section

32: Clamp section

33: snap-fit hole

34: Chimeric part

41,41A: Second fastener

411: Perforation hole

412: Second bite section

413: arc part

414: Guide slope

415: Fitting hole

42: Clip-on

421: Incline

422: Secondary occlusal part

50: Middle shot

51: snap-fit head

60: Knob

90: Power tools

91: Power tool head

92: Annular groove

Figure 1 is a three-dimensional external view of the first preferred embodiment of the present invention.

Figure 2 is a component exploded view of the first preferred embodiment of the present invention.

Figure 3 is a partial side cross-sectional view of the fastened state of the first preferred embodiment of the present invention.

Figure 4 is another partial side cross-sectional view of the fastened state of the first preferred embodiment of the present invention.

Figure 5 is a partial side cross-sectional view of the first preferred embodiment of the present invention in a released state.

Figure 6 is an exploded view of the first preferred embodiment of the present invention applied to a power tool.

Figure 7 is a component exploded view of the second preferred embodiment of the present invention.

Figure 8 is a component exploded view from another perspective of the second preferred embodiment of the present invention.

Figure 9 is a partial side cross-sectional view of the fastened state of the second preferred embodiment of the present invention.

In order to understand the technical features and practical effects of the present invention in detail and to implement it according to the content of the invention, a preferred embodiment as shown in the figure is further described in detail as follows:

As shown in FIG. 1 and FIG. 2 , the power tool auxiliary grip of the first preferred embodiment of the present invention comprises a ring 10, a grip body 20, two first fasteners 30, two second fasteners 41, a middle rod 50 and a knob 60. The ring 10 is used to be mounted on a power tool so that an operator can hold the grip body 20 to stably hold the power tool. The two first fasteners 30 are disposed on the grip body 20, the two second fasteners 41 are disposed between the two first fasteners 30, and the ring 10 can be driven by the two second fasteners 41 to retract. The middle rod 50 penetrates the two first fasteners 30 and the two second fasteners 41, and the knob 60 is coupled to one end of the middle rod 50.

As shown in FIG. 2 , the collar 10 has a C-shaped structure and is provided with two oppositely positioned extensions 11 and two through holes 12. The collar 10 is made of a material that can be elastically deformed. When the two extensions 11 are pressed and brought close together, the collar 10 will gradually shrink and can be tightly mounted on other objects. The two through holes 12 are respectively provided at the two extensions 11. The handle body 20 has a U-shaped structure for a person to hold, and includes two receiving holes 21. The two receiving holes 21 are respectively located at two ends of the handle body 20 and are opposite to each other in a straight line. Each of the receiving holes 21 is used to accommodate a corresponding one of the first fasteners 30.

As shown in FIG. 2 , each of the first fasteners 30 includes a first engaging portion 31 and a latching section 32, and the first engaging portion 31 and the latching section 32 are respectively located at two opposite extensions of the first fastener 30. As shown in FIG. 2 and FIG. 3 , the first engaging portion 31 has a tooth-like structure so as to be engaged with a corresponding one of the second fasteners 41. As shown in FIG. 2 , the latching section 32 has a plurality of circumferentially arranged The wall of each receiving hole 21 is provided with a plurality of circumferentially arranged grooves. The first fastener 30 is coupled to the handle body 20 by engaging the latch section 32 with the corresponding receiving hole 21 and can move relative to the handle body 20. In other embodiments, the handle body 20 can also be coupled to the first fastener 30 by using a receiving groove or other structure, and is not limited to the receiving hole 21.

As shown in FIG. 2 and FIG. 3, each of the second fasteners 41 includes a base, a through hole 411 and a second engaging portion 412. The through hole 411 is provided in the middle of the base for the middle rod 50 to pass through. The second engaging portion 412 is provided at the top of the base. The second engaging portion 412 is provided with a plurality of engaging teeth arranged in an arc shape and protruding toward the bottom of the base, so as to engage with the first engaging portion 31, so that the first fastener 30 and the second fastener 41 cannot rotate relative to each other.

As shown in FIG. 4 , the two extensions 11 of the collar 10 are disposed between the two second fasteners 41. Specifically, as shown in FIG. 2 and FIG. 4 , the collar 10 includes two inserting portions 13, which extend from the bottom ends of the two extensions 11 in opposite directions, respectively. Each of the inserting portions 13 is inserted into the corresponding second fastener 41, so that the two extensions 11 of the collar 10 are stably disposed between the two second fasteners 41. between the two fasteners 41; in addition, in the first preferred embodiment of the present invention, each second fastener 41 further includes an arc portion 413, The arc portion 413 is disposed at the top of the base and has an arc-shaped structure, so that it can be attached to the ring 10 as shown in FIG. 4, thereby stabilizing the shape of the ring 10 after the ring 10 is contracted, ensuring that the ring 10 is accurately mounted on the object.

As shown in FIG. 3 and FIG. 4 , the middle rod 50 is penetrated by the two first fasteners 30, the through holes 411 of the two second fasteners 41, and the two through holes of the collar 10, so that the two first fasteners 30 can be close to or away from each other along the middle rod 50. When the two first fasteners 30 are close to each other and press against the two second fasteners 41, the two second fasteners 41 can be driven to press against the two extensions 11 of the collar 10 to shrink the collar 10. When the two first fasteners 30 no longer press against the two second fasteners 41, the collar 10 can be extended through its The middle rod 50 is opened due to its elasticity; as shown in FIG. 4 and FIG. 5, the through hole 411 and the through hole 12 for the middle rod 50 to pass through extend along a radial direction of the middle rod 50 and are elliptical, thereby the middle rod 50 can move radially along the through hole 411 and the through hole 12. Specifically, as shown by the arrow in FIG. 5, the middle rod 50 moves radially downward and approaches the bottom ends of the two second fasteners 41, and drives the two first fasteners 30 and the handle body 20 to move downward relative to the two second fasteners 41.

As shown in FIG. 2 and FIG. 4, in addition, in the first preferred embodiment of the present invention, the middle rod 50 is provided with a snap-fit head 51 at one end thereof and an external thread at the other end thereof, wherein the first fastener 30 is provided with a snap-fit hole 33, the spatial profile of the snap-fit hole 33 corresponds to the outer profile of the snap-fit head 51, and the snap-fit head 51 is snap-fitted in the snap-fit hole 33, so that the first fastener 30 and The auxiliary grip further includes a knob 60, which is screwed to one end of the middle rod 50 with an external thread, and can push against another first fastener 30 with rotation, so as to bring the two first fasteners 30 closer together; in other embodiments, the relative positions of the two first fasteners 30 can also be positioned by other methods, which are not limited to the first preferred embodiment of the present invention.

The power tool auxiliary grip of the first preferred embodiment of the present invention is used as follows. As shown in FIG. 6 , the collar 10 is sleeved on a power tool head 91 of a power tool 90, and the grip body 20 is used by an operator to hold the power tool stably. As shown in FIG. 5 , during installation, the two second fasteners 41 are in a loose state, and the collar 10 has not been compressed and contracted, so it is convenient to sleeve on the aforementioned power tool head 91. Then, the knob 60 is turned to make the knob 60 rotate. The button 60 pushes the first fastener 30 toward the right side of FIG. 5 , so that the two first fasteners 30 are close to each other along the middle rod 50 and press against the two second fasteners 41 as shown in FIG. 4 , driving the two second fasteners 41 to press against the two extensions 11, so that the collar 10 is contracted and can be tightly sleeved on the power tool head 91 and cannot rotate relative to the power tool head 91, and at the same time, the first bite portion 31 of the first fastener 30 is engaged with the second bite portion 412 of the second fastener 41.

As shown in FIGS. 2 to 4, in the first preferred embodiment of the present invention, the auxiliary handle further includes a clamping member 42, the bottom of the clamping member 42 is provided with two connected inclined surfaces 421, the inclinations of the two inclined surfaces 421 are opposite, and each of the second fasteners 41 is provided with a guide inclined surface 414, as shown in FIGS. 3 and 4, each of the inclined surfaces 421 is abutted against the guide inclined surface 414 of the corresponding second fastener 41, and the two second fasteners 41 are provided with a guide inclined surface 414. When the fastener 41 is pressed by the two first fasteners 30 and approaches each other, the clamping member 42 is guided by the guide slope 414 and presses against the first fastener 30, so that the first engaging portion 31 and the second engaging portion 412 engage with each other, and the first fastener 30 and the second fastener 41 are positioned, so that the handle body 20 and the two first fasteners 30 cannot rotate relative to the two second fasteners 41 and the ring 10.

When the angle of the auxiliary grip needs to be adjusted, as shown in FIG. 5 , the knob 60 is turned toward the left side of FIG. 5 so that the two first fasteners 30 no longer press against the two second fasteners 41, and the collar 10 is opened from the contracted state, so that the collar 10 can be rotated around the aforementioned power tool head 91 to adjust the grip body 20 to different sides of the power tool 90, so that operators with different dominant hands can use the auxiliary grip to assist in holding the power tool. Alternatively, the grip body 20 can be rotated around the power tool head 91 and adjusted to any position on the periphery of the power tool head 91 according to the operating scene, obstacles in the environment, or the personal habits of the operator to improve the comfort during use.

At the same time, as shown in FIG. 5 , since the knob 60 has been unscrewed, the two second fasteners 41 can be slightly pulled apart. At this time, the clamping member 42 is guided by the guide bevel 414 and moves along a radial direction of the middle rod 50 (as shown by the arrow in FIG. 5 ). Specifically, it moves in a direction away from the driving axis of the power tool head 91 on which the collar 10 is mounted, so that the first fastener 30 is no longer pressed against the second fastener 41. In this way, the middle rod 50 can be moved along the through hole 411 and the through hole 12 relative to the second fastener 41 as described above. The second fastener 41 moves radially away from the driving axis of the power tool head 91, that is, moves toward the bottom end of the second fastener 41, so that the middle rod 50 drives the first fastener 30 to move relative to the second fastener 41, and separates the first bite portion 31 from the second bite portion 412 located at the top of the second fastener 41, so that the handle body 20 and the two first fasteners 30 can rotate relative to the two second fasteners 41 and the ring 10 to adjust the angle of the handle body 20 relative to the ring 10.

By adjusting the angle of the grip body 20 relative to the power tool head 91 mounted on the collar 10, for example, the grip body 20 can be adjusted from being perpendicular to the power tool head 91 to being close to the power tool head 91. When the operating space is small, the operator can still hold it and play the role of the auxiliary grip. Alternatively, the operator can also fine-tune the angle of the grip body 20 relative to the collar 10 according to his or her own usage habits to improve the comfort of holding the power tool 90.

In addition, in the first preferred embodiment of the present invention, the collar 10 is provided with the two extensions 11 on the two second fasteners 41, and the insert 13 is used to stabilize the position of the two extensions 11. In other embodiments, the insert 13 can be omitted, and the two extensions 11 are simply provided between the two second fasteners 41. The collar 10 can also adopt different shapes and be directly combined with the two second fasteners 41. As long as the two second fasteners 41 can drive the collar 10 to contract when pressed by the two first fasteners 30, the specific structure of the collar 10 and the matching method with the two second fasteners 41 are not limited to the first preferred embodiment of the present invention.

As shown in FIG2, further, in the first preferred embodiment of the present invention, the clamping member 42 further includes two pairs of bite parts 422, and the two pairs of bite parts 422 are respectively located at the two ends of the clamping member 42, as shown in FIG3 and FIG4. When the clamping member 42 abuts against the first fastener 30, so that the first bite part 31 and the second bite part 412 are engaged, each of the pair of bite parts 422 also engages with the corresponding first bite part 31 of the first fastener 30, and the second bite part 412 and the pair of bite parts 422 are respectively engaged with the top and bottom of the first bite part 31, so that the first fastener 30 and the second fastener 41 are positioned in a top-to-bottom engagement manner, so that the two cannot rotate relative to each other, and better positioning stability can be obtained.

In addition, as shown in FIG. 6 , in the first preferred embodiment of the present invention, the collar 10 further includes a plurality of positioning protrusions 14, which are arranged at intervals and in an arc shape on the inner side surface of the collar 10, and the power tool head 91 is provided with an annular groove 92. When the collar 10 is sleeved on the power tool head 91, the plurality of positioning protrusions 14 are inserted into the annular groove 92, so that the position of the collar 10 on the power tool head 91 can be positioned to prevent the collar 10 from slipping on the power tool head 91.

As shown in Figures 7 to 9, the power tool auxiliary grip of the second preferred embodiment of the present invention is substantially the same as the first preferred embodiment of the present invention, except that in the first preferred embodiment of the present invention, the first fastener 30 is pushed against by the clamping member 42 to perform the locking of the first bite portion 31 and the second bite portion 412, while in the second preferred embodiment of the present invention, the first fastener 30A and the second fastener 41A included therein directly perform the aforementioned locking of the bite with their own structure, thereby omitting the clamping member 42, as described below.

As shown in FIG. 7 and FIG. 8 , the first fastener 30A includes a fitting portion 34, which is disposed at one end of the first fastener 30A provided with the first bite portion 31, and the outer profile of the fitting portion 34 is a ring cone, and the second fastener 41A includes a fitting hole 415, the second bite portion 412 is connected to the edge of the fitting hole 415, and the lower part of the second bite portion 412 is hollowed out, as shown in FIG. 9 , the fitting hole 415 is connected to the penetration hole 411, and the hollow of the fitting hole 415 is The outer contour of the interlocking portion 34 is also in a ring cone shape, and corresponds to the outer contour of the interlocking portion 34. As shown in FIG9, when the knob 60 is turned to press the two first fasteners 30A against the two second fasteners 41A and the two extensions 11, the interlocking portion 34 of each first fastener 30A is embedded in the interlocking hole 415 of the corresponding second fastener 41A, so that the first bite portion 31 and the second bite portion 412 are engaged, and the above-mentioned engagement is locked through the engaging structure, so that the angle of the handle body 20 relative to the ring 10 is fixed.

When the angle needs to be adjusted, the knob 60 is turned toward the left side of FIG. 9 to loosen the two first fasteners 30A so that the two second fasteners 41A are no longer pressed against each other, thereby loosening the collar 10, and the collar 10 can be rotated around the power tool head 91 to adjust the position of the handle body 20 relative to the power tool head 91, and at the same time, the two first fasteners 30A can be pulled apart so that the engaging portion 34 is moved from the engaging portion 91 to the engaging portion 34. The hole 415 is loosened, so that the middle rod 50 can move along the through hole 411 and the through hole 12 to drive the first fastener 30A to disengage the first bite portion 31 from the second bite portion 412 to unlock, so that the handle body 20 and the two first fasteners 30A can rotate relative to the two second fasteners 41A and the ring 10, so as to adjust the angle of the handle body 20 relative to the ring 10.

In other embodiments, the embedding portion 34 and the embedding hole 415 may also adopt other profiles. As long as the embedding portion 34 can be embedded in the embedding hole 415 or released from the embedding hole 415, thereby locking or unlocking the first bite portion 31 and the second bite portion 412, the present invention can achieve the effect of adjusting and fixing the angle of the handle body 20 relative to the ring 10, and is not limited to the second preferred embodiment of the present invention.

In the second preferred embodiment of the present invention, the engaging portion 34 and the engaging hole 415 have an annular conical profile. When unlocking, the knob 60 only needs to be slightly unscrewed so that the two first fasteners 30A can be slightly pulled apart, and the engaging portion 34 can be loosened from the engaging hole 415, so that the middle rod 50 can move along the through hole 411 and the through hole 12 to drive the first fastener 30A. In FIG. 9, the middle rod 50 moves radially downward, that is, moves toward the bottom end of the second fastener 41A, thereby driving The first fastener 30A moves relative to the second fastener 41A to separate the first engaging portion 31 from the second engaging portion 412 located at the top of the second fastener 41A, thereby achieving an effect similar to that of the first preferred embodiment of the present invention. In addition, when re-locking, even if the first fastener 30A is offset relative to the second fastener 41A due to the margin of the through hole 411, the annular conical profile can also provide a guiding effect, making it easier for the engaging portion 34 to be re-engaged in the engaging hole 415.

10: Ring 20: Handle body 21: Accommodation hole 30: First fastener 41: Second fastener 413: Arc-shaped portion 60: Knob

Claims (7)

An auxiliary grip for a power tool, comprising: A grip body; Two first fasteners, the two first fasteners are combined with the grip body, each of the first fasteners is provided with a first bite portion; Two second fasteners, the two second fasteners are arranged between the two first fasteners, and each of the second fasteners is provided with a second bite portion and a through hole; A ring, which can be compressed by the two second fasteners and is provided with two through holes that are linearly opposite; and A middle rod, which penetrates the two first fasteners, the two second fasteners' through holes and the two through holes of the ring, so that the two first fasteners can move along the middle rod relative to the grip body to get closer or farther away, and the middle rod can move radially along the through holes and the through holes; The two first fasteners can be brought close to each other and press against the two second fasteners, so that the first engaging portion engages with the second engaging portion and the first fastener cannot rotate relative to the second fastener; the two first fasteners can also move away from each other, so that the middle rod can move along the through hole and the through hole radially to drive the first fastener, separate the first engaging portion from the second engaging portion, so that the handle body and the first fastener can rotate relative to the second fastener and the ring; Each of the second fasteners is provided with a guide bevel, and the auxiliary handle includes a clamping piece, and the clamping piece includes two bevels, and the two bevels are respectively abutted against the guide bevels of the two second fasteners. When the two second fasteners are pressed by the two first fasteners, the clamping piece is guided by the guide bevels and presses against the first fastener, so that the first bite portion and the second bite portion bite. As described in claim 1, the auxiliary grip of the power tool, wherein the clamping piece is provided with two auxiliary engaging parts, and when the clamping piece presses against the two first fasteners to make the first engaging part engage with the second engaging part, each of the auxiliary engaging parts engages with the first engaging part of the corresponding one of the first fasteners. As described in claim 1 or 2, the auxiliary handle of the power tool, one of the first fasteners is provided with a locking hole, and the middle rod is provided with a locking head at one end, the locking head is engaged in the locking hole and combined with the aforementioned first fastener, and the auxiliary handle of the power tool includes a knob, which is screwed on the other end of the middle rod and can be rotated to push against the other first fastener and bring the two first fasteners closer together. An auxiliary grip for a power tool as described in claim 1 or 2, wherein the first engaging portion has a tooth-like structure, and the second engaging portion includes a plurality of arc-shaped engaging teeth for engaging with the tooth-like structure of the first engaging portion. As described in claim 1 or 2, the auxiliary grip of the power tool, wherein each of the second fasteners is provided with an arc portion having an arc-shaped structure, and the two second fasteners can be attached to the ring from two sides of the ring respectively with the arc portion. An auxiliary handle for a power tool as described in claim 1 or 2, wherein the handle body is provided with two receiving holes, the two receiving holes are linearly opposite to each other, each first fastener is received in one of the corresponding receiving holes and engages with the corresponding receiving hole, so that the first fastener is combined with the handle body. An auxiliary grip for a power tool as described in claim 1 or 2, wherein the ring includes two inserting portions, the two inserting portions extend in opposite directions, and each of the inserting portions is inserted into a corresponding one of the second fasteners.