Adjustable angle power tool

Abstract

The present application is an angle-adjustable power tool, which comprises a handle, an operating head and a positioning assembly. The handle is provided with a clamping seat and a clamping disc. The clamping seat is arranged at the top of the handle and faces the operating head, and is provided with a communication groove and a fixing groove. The clamping disc is arranged in the fixing groove of the clamping seat. The operating head is rotatably combined with the handle and is provided with a pivot seat and a head. The pivot seat is arranged at the bottom of the operating head and is rotatably combined with the handle, so that the clamping seat and the clamping disc are located between the handle and the pivot seat. The positioning assembly is arranged between the handle and the operating head and is provided with a positioning seat, an elastic member, an abutting seat and a pulling member. Thus, the angle-adjustable power tool has a simple structure, accurate positioning and cost saving.

Description

Technical Field

[0001] This invention relates to a power tool, and more particularly to an adjustable-angle power tool that is structurally simple, accurately positioned, and cost-effective. Background Technology

[0002] Existing power tools are driven by electricity or gas to process workpieces. Existing power tools have a handle and an actuator connected to the handle. When the user holds the handle and processes the workpiece through the actuator, if the relative position of the user and the workpiece cannot be adjusted by the actuator, it will increase the inconvenience of use. Therefore, a pivoting device is currently set between the handle and the actuator of the existing power tool. The angle of the actuator relative to the handle is adjusted by the pivoting device, so that the user can process the workpiece at an appropriate angle.

[0003] However, while existing power tools can adjust the angle between the actuator and the handle by setting up the pivot device to achieve the effect of convenient use, the pivot device between the actuator and the handle lacks a stable positioning structure. This causes the actuator to swing relative to the handle during processing after the angle is adjusted, which can easily cause damage to the workpiece and endanger industrial safety. Furthermore, if the existing power tool is gas-driven, in order to accurately transmit gas through the handle and the pivot device to the actuator, the existing power tool must set up a complex and difficult-to-manufacture gas flow channel between the handle, the pivot device and the actuator, which increases the manufacturing cost and time. In summary, existing power tools do have aspects that need to be improved. Summary of the Invention

[0004] To address the problems and shortcomings of existing power tools, such as the tendency for the actuator head to swing relative to the handle during machining after the angle of the actuator head is adjusted, and the need for complex and difficult-to-machine gas flow channels between the handle, pivot device, and actuator head, which increase manufacturing costs and time, this invention provides an adjustable-angle power tool. The main feature is an automatically resetting positioning assembly between the handle and the actuator head, ensuring the actuator head is securely connected to the handle after angle adjustment. Furthermore, through spatial and structural configuration, a simplified flow channel is formed between the handle and the actuator head, thereby providing a simplified, accurately positioned, and cost-effective adjustable-angle power tool.

[0005] Based on the above objectives, the present invention provides an adjustable-angle power tool, which includes a handle, an actuator head, and a positioning assembly, wherein:

[0006] The handle is provided with a locking seat and a locking plate. The locking seat is fixed to the top of the handle and is provided with a connecting groove and a fixing groove. The fixing groove is connected to the connecting groove and faces the actuating head. The locking plate is disposed in the fixing groove of the locking seat.

[0007] The actuator head is pivotally coupled to the handle and has a pivot seat and a head. The pivot seat is located at the bottom of the actuator head and is pivotally coupled to the handle, such that the locking seat and locking plate are located between the handle and the pivot seat; and

[0008] The positioning assembly is located between the handle and the actuating head to fix the angle of the actuating head relative to the handle. The positioning assembly includes a positioning seat, an elastic element, a stop seat, and a lever. The positioning seat is rotatably and movable between the handle and the pivot seat, and can be selectively engaged with the locking plate. The elastic element is located in the communicating groove of the locking seat and abuts against the positioning seat, pushing the positioning seat to engage with the locking plate. The stop seat is located on the outer surface of the handle away from the pivot seat and is fixed to the locking seat and abuts against the elastic element. The lever is engaged with the positioning seat and rotatably abuts against the stop seat.

[0009] When the lever rotates relative to the abutment, it causes the positioning seat to separate from the locking plate and compresses the elastic element. The angle of the actuating head relative to the handle can be adjusted by rotating the pivot relative to the handle. After adjustment, the positioning seat moves toward the locking plate and locks with it for positioning through the compressed elastic element.

[0010] Furthermore, in the aforementioned adjustable-angle power tool, the abutment has at least one sliding groove on its outer surface, and the lever has at least one protrusion on one side facing the abutment. The at least one protrusion can be selectively disposed in the at least one sliding groove or abut against the outer side of the abutment, so that the positioning seat moves relative to the locking plate as the lever rotates.

[0011] Furthermore, in the aforementioned adjustable-angle power tool, the positioning seat is provided with a connector and a positioning plate. The connector is located at one end of the positioning seat and is fixedly connected to the pivot seat. The positioning plate is located in the middle section of the positioning seat and is connected to the connector. The positioning plate is movably located in the communicating groove of the locking seat and is locked with the locking plate.

[0012] Preferably, in the aforementioned adjustable-angle power tool, the locking disc has a plurality of locking units formed on the side of the locking disc facing the handle, and the positioning disc has a positioning structure on the side facing the locking disc where the plurality of locking units are located, the positioning structure being able to engage with each of the locking units of the locking disc.

[0013] Preferably, in the aforementioned adjustable-angle power tool, the positioning structure of the positioning disk is a helical gear, and each of the locking units of the locking disk is a helical tooth structure that meshes with the helical gear.

[0014] Preferably, in the aforementioned adjustable-angle power tool, the locking disc is provided with at least one vent hole, which axially penetrates the locking disc and the plurality of locking units and communicates with the connecting groove.

[0015] Preferably, in the aforementioned adjustable-angle power tool, the handle is provided with a receiving groove and a pivoting groove. The receiving groove extends laterally through the top of the handle and faces the actuating head. The pivoting groove is laterally recessed in the top of the handle and communicates with the receiving groove. The locking seat is provided in the pivoting groove, and the elastic member is provided between the pivoting groove and the communicating groove.

[0016] Preferably, the adjustable-angle power tool described above, wherein:

[0017] The handle is provided with a connecting head, the receiving groove and the pivoting groove are formed on the connecting head, and a communicating air groove is longitudinally provided on the connecting head below the pivoting groove. The communicating air groove is connected to the pivoting groove and the bottom of the connecting head.

[0018] The locking seat is fixedly engaged with the coupling head. The locking seat has a radially recessed groove at its bottom on the side facing the pivot groove, communicating with the connecting groove and the connecting air groove; and

[0019] The pivot seat is rotatably pivotally connected to the connecting head of the handle and is provided with a connecting groove. The connecting groove is laterally recessed on the side of the pivot seat facing the connecting head, and the portion of the locking seat extending out of the connecting head is accommodated in the connecting groove.

[0020] By utilizing the aforementioned technical features, the adjustable-angle power tool of the present invention, when in use, only requires rotating the lever relative to the abutment to move the positioning seat relative to the engagement head. This causes the positioning structure of the positioning disc to separate from the locking units of the locking disc, freeing the positioning seat from the locking restriction of the locking disc. The user can rotate the actuator to change its angle relative to the handle as needed. After adjusting the angle, the compressed elastic element automatically pushes the positioning seat away from the engagement head, causing the positioning disc to lock with the locking disc. Through the structural relationship between the locking disc, the positioning seat, the abutment, and the lever, the angle of the actuator relative to the handle is stably and accurately positioned, preventing the actuator from swinging relative to the handle during processing, which could damage the workpiece or endanger work safety. Furthermore, by providing a connecting air groove in the engagement head, a connecting groove in the locking seat, and at least one connecting hole... The arrangement of the annular groove and the pivot seat with ventilation channels allows high-pressure gas entering through the housing to enter the head of the actuator head via a simplified configuration of connecting air grooves, connecting slots, perforations, and ventilation channels. This drives the head to process the workpiece, eliminating the need for complex and difficult-to-machine gas channels, effectively reducing manufacturing costs and time. Furthermore, even after the actuator head rotates relative to the handle, it can still enter the head via the interconnected connecting air grooves, connecting slots, perforations, and ventilation channels. In addition to positioning by pushing the positioning plate against the locking plate with the elastic element, the high-pressure gas entering the joint through the connecting air grooves and connecting slots can also push the positioning plate against the locking plate for secure locking. This ensures that the adjustable-angle power tool of the present invention allows the actuator head to be stably engaged with the handle for use before and after rotation, thereby providing a simplified, accurately positioned, and cost-effective adjustable-angle power tool. Attached Figure Description

[0021] Figure 1 This is a perspective view of a preferred embodiment of the present invention.

[0022] Figure 2 This is another perspective view of a preferred embodiment of the present invention.

[0023] Figure 3 This is a partial exploded perspective view of a preferred embodiment of the present invention.

[0024] Figure 4 This is an exploded perspective view of another part of a preferred embodiment of the present invention.

[0025] Figure 5 This is a cross-sectional side view of a preferred embodiment of the present invention.

[0026] Figure 6 For the preferred embodiment of the present invention, along Figure 5 A cross-sectional side view of the AA-section line.

[0027] Figure 7 For the preferred embodiment of the present invention, along Figure 5 A sectional side view of the BB section line.

[0028] Figure 8 This is a schematic diagram of the operation of adjusting the angle in a cross-sectional side view according to a preferred embodiment of the present invention (already rotated).

[0029] Figure 9 This is a schematic diagram illustrating the operation of adjusting the angle according to a preferred embodiment of the present invention (already rotated).

[0030] Figure 10 This is a top cross-sectional view of a preferred embodiment of the present invention after the angle has been adjusted.

[0031] Figure 11 This is a three-dimensional cross-sectional view of a preferred embodiment of the present invention after the angle has been adjusted. Detailed Implementation

[0032] To gain a detailed understanding of the technical features and practical effects of the present invention, and to enable its implementation in accordance with the description, the preferred embodiments shown in the figures are further described in detail below:

[0033] This invention is an adjustable-angle power tool, a preferred embodiment of which is, for example... Figures 1 to 4 As shown, it includes a handle 10, an actuating head 20, and a positioning assembly 30, wherein:

[0034] like Figures 1 to 4 As shown, the handle 10 is provided with a receiving groove 11, a pivoting groove 12, a locking seat 13, and a locking plate 14. The receiving groove 11 extends laterally through the top of the handle 10 and faces the actuating head 20. The pivoting groove 12 is laterally recessed in the top of the handle 10 and communicates with the receiving groove 11. Preferably, the inner diameter of the pivoting groove 12 is larger than the inner diameter of the receiving groove 11, so that a step is formed between the pivoting groove 12 and the receiving groove 11. Further, the handle 10 is provided with a connecting head 15, on which the receiving groove 11 and the pivoting groove 12 are formed. Preferably, the connecting head 15 of the handle 10 is connected to a housing (not shown) at the bottom, and can be connected to a high-pressure air source through the housing. Figure 4 and Figure 5 As shown, the coupling head 15 has a longitudinally arranged connecting air groove 151 below the pivot groove 12. The connecting air groove 151 is connected to the pivot groove 12 and the bottom of the coupling head 15, so that a high-pressure air source can be supplied as follows: Figure 5 The device enters the pivot groove 12 via the bottom of the coupling head 15, the communicating air groove 151, and the receiving groove 11.

[0035] The locking seat 13 is disposed within the pivot groove 12 and extends out of the connecting head 15. Preferably, the locking seat 13 is provided with several locking fasteners 131 passing through the connecting head 15, and is fixedly engaged with the connecting head 15 via the several locking fasteners 131. The locking seat 13 has a connecting groove 132 recessed on one side facing the pivot groove 12. The locking seat 13 has a radially recessed groove 133 at the bottom of the side facing the pivot groove 12, which communicates with the connecting groove 132 and the connecting air groove 151. The locking seat 13 has a fixed groove 134 recessed on the other side away from the pivot groove 12, which is axially connected to the connecting groove 132. The inner diameter of the fixed groove 134 is smaller than the inner diameter of the connecting groove 132, so that an annular step is formed between the fixed groove 134 and the connecting groove 132.

[0036] The locking disc 14 is fixedly coupled to the locking base 13 and located within the fixing groove 134. Furthermore, the locking disc 14 and the locking base 13 can be separable or integrally formed; this is not limited. The locking disc 14 is provided with a through hole 141, several locking units 142, and at least one vent hole 143. The through hole 141 axially penetrates the locking disc 14 and communicates with the connecting groove 132 via the fixing groove 134. The several locking units 142... The locking units 142 are spaced apart and arranged on the side of the locking plate 14 facing the pivot groove 12 and surrounding the through hole 141. Preferably, each locking unit 142 is a tooth. The at least one vent hole 143 axially penetrates the locking plate 14 and the plurality of locking units 142 and communicates with the connecting groove 132. Preferably, the locking plate 14 is provided with a plurality of vent holes 143 arranged around the through hole 141.

[0037] like Figure 3 and Figure 4 As shown, the actuating head 20 is pivotally coupled to the handle 10. The actuating head 20 has a pivot seat 21 and a head 22. The pivot seat 21 is located at the bottom of the actuating head 20 and has an annular structure. The pivot seat 21 is pivotally coupled to the connecting head 15 of the handle 10. The pivot seat 21 has a connecting groove 211, a fitting hole 212, and a vent 213. The connecting groove 211 is laterally recessed on the side of the pivot seat 21 facing the connecting head 15. The portion of the retaining seat 13 extending out of the connecting head 15 is accommodated in the connecting groove 211, such that the retaining seat 13 is located between the pivot groove 12 of the connecting head 15 and the connecting groove 211 of the pivot seat 21. Figure 5As shown, when the pivot seat 21 is engaged with the coupling head 15, there is a gap d between the inner side of the pivot seat 21 and the inner side of the coupling head 15. The sleeve hole 212 is recessed on the outer surface of the pivot seat 21 away from the coupling head 15 and is connected to the coupling groove 211. Preferably, the sleeve hole 212 is a polygonal hole. The vent 213 is formed longitudinally inside the pivot seat 21 and is connected to at least one vent hole 143 of the locking plate 14 through the coupling groove 211. The head 22 is located on the top of the actuating head 20 and is connected to the pivot seat 21. The head 22 is provided with components such as a cylinder, a rotor and a steering assembly. The aforementioned components are the same as those in the prior art and will not be described here. The vent 213 is connected to the interior of the head 22.

[0038] like Figure 3 , Figure 4 and Figure 5 As shown, the positioning assembly 30 is disposed between the handle 10 and the actuating head 20 to fix the angle of the actuating head 20 relative to the handle 10. The positioning assembly 30 includes a positioning seat 31, an elastic member 32, a stop seat 33, and a lever member 34. The positioning seat 31 is rotatably and movablely disposed between the connecting head 15 of the handle 10 and the pivot seat 21 of the actuating head 20, and can selectively engage with the locking plate 14. The positioning seat 31 includes a connecting head 35 and a positioning plate 36. The connecting head 35 is disposed between the connecting head 10 and the pivot seat 21 of the actuating head 20. One end of the positioning seat 31 is engaged with the sleeve hole 212 of the pivot seat 21, so that the positioning seat 31 can rotate together with the pivot seat 21 along with the connector 35. The connector 35 is provided with a fixing hole 351 and a fixing member 352. The fixing hole 351 is axially recessed in the connector 35. The fixing member 352 is fixedly engaged with the fixing hole 351 on the side of the pivot seat 21 away from the connecting head 15 through the sleeve hole 212, so that the positioning seat 31 is fixedly engaged with the pivot seat 21 through the connector 35.

[0039] The positioning disk 36 is located in the middle section of the positioning base 31 and is combined with the connector 35. The positioning disk 36 is movably disposed in the communicating groove 132 of the locking base 13. On the side of the positioning disk 36 facing the locking disk 14 where several locking units 142 are provided, a positioning structure 361 is provided. The positioning structure 361 can be locked and engaged with each of the locking units 142 of the locking disk 14. Preferably, the positioning structure 361 is a gear that meshes with each of the teeth. More preferably, such as... Figure 5As shown, the gear of the positioning structure 361 is a helical gear, and the teeth of each of the locking units 142 of the locking disk 14 are helical teeth that mesh with the helical gear. Through the meshing of the helical gear and the helical tooth structure, not only can the structural strength and stability of the locking combination between the positioning disk 36 and the locking disk 14 be improved, but the tooth gap between the helical gear and the helical tooth structure can also be reduced, so that it can be locked accurately.

[0040] like Figures 2 to 5 As shown, the other end of the positioning seat 31, away from the connector 35, extends out of the coupling head 15 via the connecting groove 132, the pivot groove 12, and the receiving groove 11 of the locking seat 13. The elastic member 32 is disposed within the connecting groove 132 of the locking seat 13 and sleeved on the outer surface of the positioning seat 31. One end of the elastic member 32 abuts against the positioning plate 36, pushing the positioning plate 36 to engage with the locking plate 14, while the other end of the elastic member 32 extends to the receiving groove 11. Figure 3 , Figure 4 and Figure 5 As shown, the abutment 33 is disposed on the outer surface of the coupling head 15 away from the pivot seat 21. The abutment 33 is fixedly coupled to the locking seat 13 via the plurality of locking fasteners 131 and is located on the coupling head 15 and abuts against one end of the elastic member 32. The abutment 33 has at least one sliding groove 331 on its outer surface. Preferably, the abutment 33 has a plurality of annularly spaced sliding grooves 331.

[0041] The lever 34 is engaged with the positioning seat 31 via the coupling head 15 and rotatably abuts against the abutment seat 36. The lever 34 has at least one protrusion 341 on one side facing the abutment seat 33. The at least one protrusion 341 can be selectively disposed in the at least one sliding groove 331 or abut against the outer side of the abutment seat 33, so that the positioning seat 31 moves relative to the locking plate 14 as the lever 34 rotates, thereby separating the positioning plate 36 from the locking plate 14. At the same time, the positioning seat 31 drives the pivot seat 21 to move closer to the coupling head 15, that is, to reduce the gap d between the pivot seat 21 and the coupling head 15.

[0042] Please refer to the following: Figure 5 and Figure 8As shown, when the user wants to adjust the angle of the adjustable power tool of the present invention, the user rotates the lever 34 relative to the abutment 33 to adjust the angle of the actuator 20 relative to the handle 10. This causes at least one protrusion 341 to disengage from at least one sliding groove 331 and abut against the outer surface of the abutment 33, making the lever 34 move outward relative to the coupling head 15. At this time, the positioning seat 31, which is fixedly coupled to the lever 34, moves relative to the coupling head 15 and the pivot seat 21 as the lever 34 moves. This causes the positioning structure 361 of the positioning disk 36 to separate from each of the locking units 142 of the locking disk 14, and compresses the elastic member 32 located between the positioning disk 36 and the abutment 33. Since the positioning seat 31 is no longer restricted by the locking disk 14, at this time... Figure 9 As shown, the user can rotate the actuator 20 to change its angle relative to the handle 10 as needed. Since the pivot 21 is fixedly connected to the positioning seat 31, the pivot 21 can rotate relative to the connecting head 15 after the positioning seat 31 moves, thereby allowing the actuator 20 to... Figure 8 The lever 10 is moved to the left, thereby reducing the gap d between the pivot 21 and the coupling head 15.

[0043] like Figure 10 As shown, when the actuating head 20 is rotated to the desired angle, the user can rotate the lever 34, causing at least one protrusion 341 to move from the outer side of the abutment 33 to the at least one sliding groove 331. At this time, the compressed elastic member 32 will push against the positioning plate 36, causing the positioning seat 31 to move away from the coupling head 15, so that the positioning structure 361 of the positioning plate 36 engages with each of the engaging units 142 of the engaging plate 14, thereby enabling the engagement through the engaging plate 14 and the positioning... The structural relationship between the base 31, the abutment 33, and the lever 34 ensures a stable and accurate positioning of the angle between the actuator 20 and the handle 10, preventing the actuator 20 from swinging relative to the handle 10 during processing, which could damage the workpiece or endanger work safety. Furthermore, since the actuator 20 moves relative to the handle 10 along with the positioning base 31, it can rotate stably relative to the handle 10 during the adjustment of the swing angle.

[0044] For further details, please refer to the following: Figures 3 to 7As shown, the adjustable-angle power tool of the present invention, by providing a connecting air groove 151 in the coupling head 15, a connecting groove 132 in the locking seat 13, at least one through hole 141, and a ventilation channel 213 in the pivot seat 21, allows high-pressure gas entering through the housing to enter the head 22 of the actuating head 20 through the simplified structure of the connecting air groove 151, connecting groove 133, through hole 141, and ventilation channel 213, thereby driving the head 22 to process the workpiece. This eliminates the need for complex and difficult-to-process gas channels, effectively reducing manufacturing costs and time. Furthermore, even after the actuating head 20 rotates relative to the handle 10, it can still... Figure 11 As shown, the gas enters the head 22 through the interconnected air groove 151, connecting groove 133, through hole 141 and air passage 213. In addition to the positioning of the positioning plate 36 and the locking plate 14 by the elastic member 32, the high-pressure gas entering the coupling head 15 through the connecting air groove 151 and connecting groove 132 can also push the positioning plate 36 and the locking plate 14 to be fixedly locked. This allows the adjustable angle power tool of the present invention to be used with the actuating head 20 firmly connected to the handle 10 before and after rotation, thereby providing an adjustable angle power tool with a simple structure, accurate positioning and cost-saving.

[0045] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Any person skilled in the art who makes partial modifications or alterations to the technical content disclosed in the present invention without departing from the scope of the technical solution of the present invention shall still fall within the scope of the technical solution of the present invention.

Claims

1. An adjustable-angle power tool, characterized in that, It includes a handle, an actuator head, and a positioning assembly, wherein: The handle is provided with a locking seat and a locking plate. The locking seat is fixed to the top of the handle and is provided with a connecting groove and a fixing groove. The fixing groove is connected to the connecting groove and faces the actuating head. The locking plate is disposed in the fixing groove of the locking seat. The actuator head is pivotally coupled to the handle and has a pivot seat and a head. The pivot seat is located at the bottom of the actuator head and is pivotally coupled to the handle, such that the locking seat and locking plate are located between the handle and the pivot seat; and The positioning assembly is located between the handle and the actuating head to fix the angle of the actuating head relative to the handle. The positioning assembly includes a positioning seat, an elastic element, a stop seat, and a lever. The positioning seat is rotatably and movable between the handle and the pivot seat, and can be selectively engaged with the locking plate. The elastic element is located in the communicating groove of the locking seat and abuts against the positioning seat, pushing the positioning seat to engage with the locking plate. The stop seat is located on the outer surface of the handle away from the pivot seat and is fixed to the locking seat and abuts against the elastic element. The lever is engaged with the positioning seat and rotatably abuts against the stop seat. When the lever rotates relative to the abutment, it causes the positioning seat to separate from the locking plate and compresses the elastic element. The angle of the actuating head relative to the handle can be adjusted by rotating the pivot relative to the handle. After adjustment, the positioning seat moves toward the locking plate and locks with it for positioning through the compressed elastic element.

2. The adjustable-angle power tool as described in claim 1, characterized in that, The abutment has at least one sliding groove on its outer surface, and the lever has at least one protrusion on one side facing the abutment. The at least one protrusion can be selectively disposed in the at least one sliding groove or abut against the outer side of the abutment, so that the positioning seat moves relative to the locking plate as the lever rotates.

3. The adjustable-angle power tool as described in claim 1 or 2, characterized in that, The positioning seat is provided with a connector and a positioning plate. The connector is located at one end of the positioning seat and is fixedly connected to the pivot seat. The positioning plate is located in the middle section of the positioning seat and is connected to the connector. The positioning plate is movably located in the communicating groove of the locking seat and is locked with the locking plate.

4. The adjustable-angle power tool as described in claim 3, characterized in that, The locking disc has several locking units formed on the side of the locking disc facing the handle. The positioning disc has a positioning structure on the side facing the locking disc where the locking units are located. The positioning structure can be locked and engaged with each of the locking units of the locking disc.

5. The adjustable-angle power tool as described in claim 4, characterized in that, The positioning structure of the positioning disk is a helical gear, and each of the locking units of the locking disk is a helical tooth structure that meshes with the helical gear.

6. The adjustable-angle power tool as described in claim 5, characterized in that, The locking plate is provided with at least one vent hole, which axially penetrates the locking plate and the plurality of locking units and is connected to the connecting groove.

7. The adjustable-angle power tool as described in claim 1 or 2, characterized in that, The handle has a receiving groove and a pivoting groove. The receiving groove extends laterally through the top of the handle and faces the actuating head. The pivoting groove is recessed laterally in the top of the handle and communicates with the receiving groove. The locking seat is located in the pivoting groove, and the elastic member is located between the pivoting groove and the communicating groove.

8. The adjustable-angle power tool as described in claim 7, characterized in that: The handle is provided with a connecting head, the receiving groove and the pivoting groove are formed on the connecting head, and a communicating air groove is longitudinally provided on the connecting head below the pivoting groove. The communicating air groove is connected to the pivoting groove and the bottom of the connecting head. The locking seat is fixedly engaged with the coupling head. The locking seat has a radially recessed groove at its bottom on the side facing the pivot groove, communicating with the connecting groove and the connecting air groove; and The pivot seat is rotatably pivotally connected to the engagement head of the handle and is provided with an engagement groove. The engagement groove is laterally recessed on the side of the pivot seat facing the engagement head, and the portion of the locking seat extending out of the engagement head is accommodated in the engagement groove.

9. The adjustable-angle power tool as described in claim 1, characterized in that, The locking disc has several locking units formed on the side of the locking disc facing the handle. The positioning seat has a positioning structure on the side of the locking disc facing the locking disc where the locking units are located. The positioning structure can be locked and engaged with each of the locking units of the locking disc.

10. The adjustable-angle power tool as described in claim 9, characterized in that, The positioning structure of the positioning seat is a helical gear, and each of the locking units of the locking disc is a helical tooth structure that meshes with the helical gear.

Images