Buckle type connection impact wrench and use method thereof

Abstract

The invention discloses a buckle type connection impact wrench and a using method thereof, and relates to the technical field of impact wrenchs.The buckle type connection impact wrench comprises a base and further comprises a dismounting device, an impact wrench body is fixedly installed at the top of the base, a placing rod is fixedly installed at the top of the inner wall of the base, and a battery pack is arranged in the base; the left side of the base is fixedly provided with a polygonal plate, the top of the polygonal plate is fixedly provided with a button, the circumferential surface of the button is provided with a limiting groove, and the dismounting device comprises a placement groove, a limiting frame, a limiting rod, a protection groove, a protection rod and a placement plate; the limiting rod moves in the direction close to the multilateral plate to make contact with the inner wall of the containing groove to complete installation of the battery pack, the possibility that the battery pack accidentally falls off is reduced by arranging the protection rod, and therefore sudden shutdown caused by impact on the wrench body at the critical moment is avoided, it is ensured that the battery pack is firmly connected, and the operation safety is improved.

Description

Technical Field

[0001] The invention relates to the technical field of impact wrenches, in particular to a snap-on connection impact wrench and a use method thereof. Background Art

[0002] A snap-on impact wrench usually consists of a motor, a snap-on connector, an adjustment mechanism and a trigger button.

[0003] The patent with the patent announcement number CN206200847U relates to a snap-on impact wrench, including an impact wrench housing and an impact wrench base, the impact wrench housing includes a motor located in the impact wrench housing, an intermediate shaft and an output shaft driven by the motor and connected to each other, the axis lines of the intermediate shaft and the output shaft coincide, the impact wrench housing and the impact wrench base are detachably connected by a snap-on connection device, and the snap-on connection device includes a host connecting piece bracket, an unlocking button and a host bracket spring. The snap-on impact wrench disclosed in the patent is easy to assemble and disassemble, has good sealing performance, is convenient for operators to operate, and reduces the labor intensity of operators.

[0004] In the above patent, the main unit connecting plate bracket, unlocking button and main unit bracket spring make the snap-on connection impact wrench easy to assemble and disassemble, with good sealing performance, convenient for operators to operate and reduce the labor intensity of operators. However, it is difficult to prevent the battery pack from being accidentally disassembled due to human error. During the use of the impact wrench, the battery pack is accidentally disassembled, which will cause the impact wrench to suddenly stop working, thereby interrupting the current operation and affecting the work progress. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides a snap-on impact wrench and a method of using the same, which solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above purpose, the present invention is implemented through the following technical solutions: a snap-on impact wrench, comprising a base and a disassembly device, wherein an impact wrench body is fixedly installed on the top of the base, a placement rod is fixedly installed on the top of the inner wall of the base, a battery pack is arranged inside the base, a polygonal plate is fixedly installed on the left side of the base, a button is fixedly installed on the top of the polygonal plate, and a limiting groove is provided on the circumferential surface of the button, wherein the disassembly device comprises a placement groove, a limiting frame, a limiting rod, a protection groove, a protection rod and a placement plate, when the battery pack continues to move upward so that the limiting rod contacts the placement groove, the limiting rod moves in a direction close to the polygonal plate to contact the inner wall of the placement groove and completes the installation of the battery pack, the placement groove is provided on a side of the battery pack away from the polygonal plate, the limiting frame is fixedly installed on a side of the base away from the polygonal plate, the limiting rod slides through the inner and outer walls of the limiting frame, the protection groove is provided on the circumferential surface of the limiting rod, the protection rod is slidably installed on the side of the limiting frame away from the polygonal plate, and the placement plate slides on the circumferential surface of the placement rod.

[0007] According to the above technical solution, a reset spring is arranged between the placement rod and the placement plate, and the placement plate can be reset by the reset spring, and the button is electrically connected to the impact wrench body.

[0008] According to the above technical solution, a limit spring is arranged between the limit rod and the limit frame, and the limit spring can drive the limit rod to reset, and the protection rod contacts the inner wall of the protection groove.

[0009] According to the above technical scheme, an auxiliary device is provided on the surface of the base to prevent the impact wrench body from loosening; a protective device is provided on the top of the inner wall of the base, and the auxiliary device includes a stabilizing groove, a stabilizing plate, a stabilizing rod, a hollow U-shaped rod, a rubber block and a stabilizing frame. The hollow U-shaped rod moves in a direction away from the cross frame to drive the rubber block to move. The movement of the rubber block squeezes the stabilizing frame and the corrugated groove and assists in fixing the front and rear sides of the battery pack. The stabilizing groove is opened on the front side of the base, the stabilizing plate is fixedly installed on the inner wall of the stabilizing groove, the stabilizing rod slides through the front and rear walls of the stabilizing plate, the hollow U-shaped rod is fixedly installed at both ends of the stabilizing rod, the rubber block is fixedly installed on one end of the hollow U-shaped rod away from the placement plate, and the stabilizing frame is fixedly installed on the front side of the battery pack. There are two groups of stabilizing grooves, stabilizing plates, stabilizing rods, hollow U-shaped rods, rubber blocks and stabilizing frames, and in the other group, the stabilizing groove is opened on the rear side of the base, and the stabilizing frame is fixedly installed on the rear side of the battery pack.

[0010] According to the above technical solution, a linkage spring is arranged between the stabilizing plate and the stabilizing rod, and the linkage spring can drive the stabilizing rod to reset. The end of the hollow U-shaped rod close to the placement plate is set as an inclined surface.

[0011] According to the above technical solution, the inner wall of the stabilizing frame is provided with a corrugated groove, through which additional friction can be added, the rubber block contacts the corrugated groove, and the hollow U-shaped rod contacts the top of the placement plate.

[0012] According to the above technical scheme, the protection device includes a linkage frame, a fixed plate, a cross frame, a load-bearing plate, an L-shaped rod, a support plate, a support rod and a limit plate. The movement of the support rod drives the limit plate to move, and the limit plate moves out of contact with the limit groove and releases the limit on the button. The linkage frame is fixedly installed on the end of the hollow U-shaped rod away from the stable frame, the fixed plate is fixedly installed on the top of the base, the cross frame is fixedly installed on the bottom of the fixed plate, the load-bearing plate is slidably installed on the inner wall of the cross frame, the L-shaped rod is fixedly installed on the side of the load-bearing plate away from the fixed plate, the support plate is slidably installed on the inner wall of the cross frame, the support rod is fixedly installed on the side of the support plate away from the load-bearing plate, and the limit plate is fixedly installed on the side of the support rod away from the load-bearing plate.

[0013] According to the above technical solution, a No. 1 spring is arranged between the support plate and the cross frame, and the No. 1 spring can drive the support plate to reset. Liquid is arranged inside the cross frame, and the support plate is in contact with the inner wall of the linkage frame. A rubber ring is arranged between the L-shaped rod and the cross frame to increase the sealing of the cross frame. The elastic coefficient of the No. 1 spring is smaller than that of the linkage spring.

[0014] A method for using a snap-on impact wrench comprises the following steps: Step 1: When the battery pack needs to be installed inside the base, first manually pull the protection rod to move away from the limit rod, and the protection rod moves away from the limit rod to break away from the contact with the protection groove and release the limit on the limit rod; Step 2: After the limit of the limit rod is released, manually pull the limit rod to move away from the polygonal plate. The limit rod moves away from the polygonal plate to squeeze the limit spring. The limit spring is squeezed by the limit rod to deform and accumulate force. At the same time, place the battery pack into the base and push it upward. The battery pack moves upward to contact the placement plate and squeeze the placement plate. Step 3: The placement plate is squeezed by the battery pack and moves upward. The placement plate moves upward to squeeze the reset spring. The reset spring is squeezed by the placement plate to deform and accumulate force. When the battery pack continues to move upward so that the limit rod contacts the placement slot; Step 4: Under the elastic force of the limit spring, the limit rod moves toward the direction close to the polygonal plate and contacts the inner wall of the placement slot to complete the installation of the battery pack. After the battery pack is installed, the impact wrench body is manually operated to perform the operation.

[0015] The present invention provides a snap-on connection impact wrench, which has the following beneficial effects: (1) In the present invention, when the battery pack needs to be quickly disassembled and replaced, the protective rod is manually pulled to move in a direction away from the limit rod. The protective rod moves in a direction away from the limit rod to break away from the contact with the protective groove and release the limit on the limit rod. The provision of the protective rod reduces the possibility of accidental detachment of the battery pack, thereby avoiding the sudden shutdown of the impact wrench body at a critical moment, and ensuring that the battery pack is firmly connected helps to improve the safety of operation. The limit rod moves in a direction close to the polygonal plate under the elastic force of the limit spring to contact the inner wall of the placement groove and complete the installation of the battery pack. The convenient battery pack installation design simplifies the maintenance process, allowing operators to check and replace the battery pack more quickly and maintain the good performance of the impact wrench body.

[0016] (2) The invention drives the rubber block to move by moving the hollow U-shaped rod in a direction away from the cross frame. The movement of the rubber block squeezes the stabilizing frame and the corrugated groove and assists in fixing the front and rear sides of the battery pack. The contact between the rubber block and the corrugated groove can provide additional friction and support to prevent the battery pack from moving or vibrating during the use of the impact wrench body, thereby improving the stability of the battery pack's continuous power supply. The rubber block also provides additional buffering to protect the battery pack from physical impact and scratches, thereby maintaining the battery pack in a good state and further improving the continuity of the impact wrench body during operation.

[0017] (3) The invention drives the limit plate to move by moving the support rod. The limit plate moves out of contact with the limit groove and releases the limit on the button. After the limit of the button is released, the button can be pressed manually. The button is pressed to drive the impact wrench body to be powered on, ensuring that the battery pack is stably installed before power is turned on, reducing the risk of short circuit or other safety hazards caused by poor contact or looseness of the battery pack. In addition, a stably installed battery pack can avoid electrical damage to the battery pack and internal components of the impact wrench body due to position displacement when power is turned on. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the internal structure of the base of the present invention; Figure 3 For the present invention Figure 2 A schematic diagram of the structure enlargement of part A; Figure 4 For the present invention Figure 2 A schematic diagram of the structure of part B in the middle is enlarged; Figure 5 This is a schematic diagram of the position structure of the polygonal plate and the button of the present invention; Figure 6 For the present invention Figure 5 The enlarged schematic diagram of the structure of part C in the middle; Figure 7 It is a schematic diagram of the internal structure of the cross frame of the present invention.

[0019] In the figure: 1. base; 2. impact wrench body; 3. placement rod; 4. reset spring; 5. battery pack; 6. placement slot; 7. limit frame; 8. limit rod; 9. protection slot; 10. protection rod; 11. placement plate; 12. limit spring; 131. stabilizing slot; 132. stabilizing plate; 133. stabilizing rod; 134. hollow U-shaped rod; 135. rubber block; 136. stabilizing frame; 137. linkage spring; 141. linkage frame; 142. fixing plate; 143. cross frame; 144. load-bearing plate; 145. L-shaped rod; 146. support plate; 147. support rod; 148. limit plate; 15. polygonal plate; 16. button; 17. limit slot. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] See also Figure 1-Figure 7 An embodiment of the present invention is: a snap-on impact wrench, comprising a base 1, and also comprising a disassembly device, wherein an impact wrench body 2 is fixedly mounted on the top of the base 1, a placement rod 3 is fixedly mounted on the top of the inner wall of the base 1, a battery pack 5 is arranged inside the base 1, a polygonal plate 15 is fixedly mounted on the left side of the base 1, a button 16 is fixedly mounted on the top of the polygonal plate 15, and a limiting groove 17 is provided on the circumferential surface of the button 16, wherein the disassembly device comprises a placement groove 6, a limiting frame 7, a limiting rod 8, a protection groove 9, and a protection rod 1 0 and a placement plate 11, the placement groove 6 is arranged on a side of the battery pack 5 away from the polygonal plate 15, the limit frame 7 is fixedly installed on a side of the base 1 away from the polygonal plate 15, the limit rod 8 slides through the inner and outer walls of the limit frame 7, the protection groove 9 is arranged on the circumferential surface of the limit rod 8, the protection rod 10 is slidably installed on a side of the limit frame 7 away from the polygonal plate 15, and the placement plate 11 slides on the circumferential surface of the placement rod 3. By setting the protection rod 10, the possibility of accidental falling off of the battery pack 5 is reduced, thereby avoiding the sudden shutdown of the impact wrench body 2 at a critical moment.

[0022] A reset spring 4 is provided between the placement rod 3 and the placement plate 11, and the placement plate 11 can be reset by the reset spring 4. The button 16 is electrically connected to the impact wrench body 2. The convenient battery pack 5 installation design simplifies the maintenance process, allowing the operator to check and replace the battery pack 5 more quickly and maintain the good performance of the impact wrench body 2.

[0023] A limiting spring 12 is arranged between the limiting rod 8 and the limiting frame 7 , and the limiting spring 12 can drive the limiting rod 8 to reset, so that the protection rod 10 contacts the inner wall of the protection groove 9 .

[0024] A method for using a snap-on impact wrench comprises the following steps: Step 1: When the battery pack 5 needs to be installed inside the base 1, first manually pull the protection rod 10 to move away from the limiting rod 8, and the protection rod 10 moves away from the limiting rod 8 to break away from the contact with the protection groove 9 and release the limiting rod 8; Step 2: After the limit of the limit rod 8 is released, the limit rod 8 is manually pulled to move away from the polygonal plate 15, and the limit rod 8 moves away from the polygonal plate 15 to squeeze the limit spring 12. The limit spring 12 is squeezed by the limit rod 8 to deform and accumulate force. At the same time, the battery pack 5 is placed inside the base 1 and pushed upward. The battery pack 5 moves upward to contact the placement plate 11 and squeeze the placement plate 11; Step 3: The placement plate 11 is squeezed by the battery pack 5 and moves upward. The placement plate 11 moves upward to squeeze the return spring 4. The return spring 4 is squeezed by the placement plate 11 to deform and accumulate force. When the battery pack 5 continues to move upward so that the limit rod 8 contacts the placement slot 6; Step 4: Under the elastic force of the limit spring 12, the limit rod 8 moves toward the direction close to the polygonal plate 15 to contact the inner wall of the placement groove 6 and complete the installation of the battery pack 5. After the battery pack 5 is installed, the impact wrench body 2 is manually operated to operate.

[0025] When the present embodiment is working: when it is necessary to quickly disassemble and replace the battery pack 5, the protective rod 10 is first manually pulled to move in the direction away from the limiting rod 8, and the protective rod 10 is moved in the direction away from the limiting rod 8 to break away from the contact with the protective groove 9 and release the limit of the limiting rod 8. After the limit of the limiting rod 8 is released, the limiting rod 8 is manually pulled to move in the direction away from the battery pack 5, and the limiting rod 8 is moved in the direction away from the battery pack 5 to break away from the contact with the placement groove 6 and release the limit of the battery pack 5. After the limit of the battery pack 5 is released, the placement plate 11 moves downward under the elastic force of the reset spring 4 to pop out the battery pack 5 to complete the quick disassembly of the battery pack 5. At the same time, when it is necessary to install the battery pack 5 inside the base 1, the protective rod 10 is also manually pulled to move in the direction away from the limiting rod 8, and the protective rod 10 is moved in the direction away from the limiting rod 8 to break away from the contact with the protective groove 9 and release the limit of the limiting rod 8. After the limit of 8 is released, the limit rod 8 is manually pulled to move in the direction away from the polygonal plate 15, and the limit rod 8 moves in the direction away from the polygonal plate 15 to squeeze the limit spring 12. The limit spring 12 is squeezed by the limit rod 8 to deform and accumulate force. At the same time, the battery pack 5 is placed into the base 1 and pushed upward, and the battery pack 5 moves upward to contact the placement plate 11 and squeeze the placement plate 11. The placement plate 11 is squeezed and moved upward by the battery pack 5. The placement plate 11 moves upward to squeeze the reset spring 4. The reset spring 4 is squeezed by the placement plate 11 to deform and accumulate force. When the battery pack 5 continues to move upward so that the limit rod 8 contacts the placement groove 6, the limit rod 8 moves in the direction close to the polygonal plate 15 under the elastic force of the limit spring 12, contacts the inner wall of the placement groove 6 and completes the installation of the battery pack 5. After the battery pack 5 is installed, the impact wrench body 2 is manually operated to operate.

[0026] See also Figure 1-Figure 7 On the basis of the above embodiment, in another embodiment of the present invention, an auxiliary device for preventing the impact wrench body 2 from loosening is provided on the surface of the base 1; a protective device is provided on the top of the inner wall of the base 1, and the auxiliary device includes a stabilizing groove 131, a stabilizing plate 132, a stabilizing rod 133, a hollow U-shaped rod 134, a rubber block 135 and a stabilizing frame 136. The stabilizing groove 131 is opened on the front side of the base 1, the stabilizing plate 132 is fixedly installed on the inner wall of the stabilizing groove 131, the stabilizing rod 133 slides through the front and rear walls of the stabilizing plate 132, the hollow U-shaped rod 134 is fixedly installed at both ends of the stabilizing rod 133, the rubber block 135 is fixedly installed on one end of the hollow U-shaped rod 134 away from the placement plate 11, and the stabilizing frame 136 is fixedly installed on the front side of the battery pack 5. There are two groups of stabilizing grooves 131, stabilizing plates 132, stabilizing rods 133, hollow U-shaped rods 134, rubber blocks 135 and stabilizing frames 136, and in another group, the stabilizing groove 131 is opened on the rear side of the base 1, and the stabilizing frame 136 is fixedly installed on the rear side of the battery pack 5.

[0027] A linkage spring 137 is provided between the stabilizing plate 132 and the stabilizing rod 133 , and the linkage spring 137 can drive the stabilizing rod 133 to reset. One end of the hollow U-shaped rod 134 close to the placement plate 11 is set as an inclined surface.

[0028] A corrugated groove is provided on the inner wall of the stabilizing frame 136, through which additional friction can be added. The rubber block 135 is in contact with the corrugated groove, and the hollow U-shaped rod 134 is in contact with the top of the placement plate 11. The contact between the rubber block 135 and the corrugated groove can provide additional friction and support to prevent the battery pack 5 from moving or vibrating during the use of the impact wrench body 2, thereby improving the stability of the battery pack 5 in continuous power supply.

[0029] The protection device includes a linkage frame 141, a fixed plate 142, a cross frame 143, a load-bearing plate 144, an L-shaped rod 145, a support plate 146, a support rod 147 and a limit plate 148. The linkage frame 141 is fixedly installed on the end of the hollow U-shaped rod 134 away from the stabilizing frame 136, the fixed plate 142 is fixedly installed on the top of the base 1, the cross frame 143 is fixedly installed on the bottom of the fixed plate 142, the load-bearing plate 144 is slidably installed on the inner wall of the cross frame 143, the L-shaped rod 145 is fixedly installed on the side of the load-bearing plate 144 away from the fixed plate 142, the support plate 146 is slidably installed on the inner wall of the cross frame 143, the support rod 147 is fixedly installed on the side of the support plate 146 away from the load-bearing plate 144, and the limit plate 148 is fixedly installed on the side of the support rod 147 away from the load-bearing plate 144. The stably installed battery pack 5 can avoid electrical damage to the battery pack 5 and the internal components of the impact wrench body 2 caused by position offset when power is turned on.

[0030] A No. 1 spring is arranged between the support plate 146 and the cross frame 143, and the No. 1 spring can drive the support plate 146 to reset. Liquid is arranged inside the cross frame 143. The support plate 146 contacts the inner wall of the linkage frame 141. A rubber ring is arranged between the L-shaped rod 145 and the cross frame 143 to increase the sealing of the cross frame 143. The elastic coefficient of the No. 1 spring is smaller than that of the linkage spring 137.

[0031] When the present embodiment is working, the placement plate 11 is squeezed by the battery pack 5 and moves upward. The placement plate 11 moves upward and contacts the hollow U-shaped rod 134 and squeezes the hollow U-shaped rod 134. The hollow U-shaped rod 134 is squeezed by the placement plate 11 and moves in a direction away from the cross frame 143. The movement of the hollow U-shaped rod 134 in a direction away from the cross frame 143 drives the stabilizing rod 133 to move. The movement of the stabilizing rod 133 pulls the linkage spring 137. The linkage spring 137 is pulled by the stabilizing rod 133 to deform and store force. At the same time, the hollow U-shaped rod 13 4 moves in a direction away from the cross frame 143, driving the rubber block 135 to move. The rubber block 135 moves to squeeze the stabilizing frame 136 and the corrugated groove and assists in fixing the front and rear sides of the battery pack 5. When the placement plate 11 moves downward under the elastic force of the reset spring 4 and breaks away from the contact with the hollow U-shaped rod 134, the stabilizing rod 133 moves and resets in a direction close to the cross frame 143 under the elastic force of the linkage spring 137. The stabilizing rod 133 moves and resets in a direction close to the cross frame 143, driving the hollow U-shaped rod 134 to move and break away from the contact with the corrugated groove.

[0032] The hollow U-shaped rod 134 moves in a direction away from the cross frame 143, driving the linkage frame 141 to move. The linkage frame 141 moves to contact the L-shaped rod 145 and squeezes the L-shaped rod 145. The L-shaped rod 145 is squeezed by the linkage frame 141 and moves in a direction close to the stabilizing plate 132. The L-shaped rod 145 moves in a direction close to the stabilizing plate 132 and drives the load-bearing plate 144 to move in a direction close to the stabilizing plate 132. The load-bearing plate 144 moves in a direction close to the stabilizing plate 132 to extract the liquid inside the cross frame 143. The liquid inside the cross frame 143 is extracted by the load-bearing plate 144, so that negative pressure is generated inside the cross frame 143. Under the action of the negative pressure inside the cross frame 143, the support plate 146 moves away from the button 16, and the support plate 146 moves away from the button 16 to pull the No. 1 spring. The No. 1 spring is pulled by the support plate 146 and deforms and accumulates force. At the same time, the support plate 146 moves away from the button 16, driving the support rod 147 to move. The movement of the support rod 147 drives the limit plate 148 to move. The limit plate 148 moves out of contact with the limit groove 17 and releases the limit on the button 16. After the limit of the button 16 is released, the button 16 is manually pressed, and the button 16 is pressed to drive the impact wrench body 2 to be energized.

[0033] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A snap-on impact wrench comprising a base (1), characterized in that: Also includes a disassembly device; The impact wrench body (2) is fixedly mounted on the top of the base (1), a placement rod (3) is fixedly mounted on the top of the inner wall of the base (1), a battery pack (5) is arranged inside the base (1), a polygonal plate (15) is fixedly mounted on the left side of the base (1), a button (16) is fixedly mounted on the top of the polygonal plate (15), and a limiting groove (17) is provided on the circumferential surface of the button (16); The disassembly device includes a placement groove (6), a limit frame (7), a limit rod (8), a protection groove (9), a protection rod (10) and a placement plate (11), wherein the placement groove (6) is provided on a side of the battery pack (5) away from the polygonal plate (15), the limit frame (7) is fixedly mounted on a side of the base (1) away from the polygonal plate (15), the limit rod (8) slides through the inner and outer walls of the limit frame (7), the protection groove (9) is provided on the circumferential surface of the limit rod (8), the protection rod (10) is slidably mounted on a side of the limit frame (7) away from the polygonal plate (15), and the placement plate (11) slides on the circumferential surface of the placement rod (3); Wherein, an auxiliary device for preventing the impact wrench body (2) from loosening is provided on the surface of the base (1); and a protective device is provided on the top of the inner wall of the base (1).

2. The snap-on impact wrench according to claim 1, characterized in that: A return spring (4) is provided between the placement rod (3) and the placement plate (11), and the button (16) is electrically connected to the impact wrench body (2).

3. The snap-on impact wrench according to claim 2, wherein: A limiting spring (12) is provided between the limiting rod (8) and the limiting frame (7), and the protection rod (10) is in contact with the inner wall of the protection groove (9).

4. The snap-on impact wrench according to claim 3, wherein: The auxiliary device comprises a stabilizing groove (131), a stabilizing plate (132), a stabilizing rod (133), a hollow U-shaped rod (134), a rubber block (135) and a stabilizing frame (136), wherein the stabilizing groove (131) is opened on the front side of the base (1), the stabilizing plate (132) is fixedly mounted on the inner wall of the stabilizing groove (131), the stabilizing rod (133) slides through the front and rear walls of the stabilizing plate (132), the hollow U-shaped rod (134) is fixedly mounted on both ends of the stabilizing rod (133), the rubber block (135) is fixedly mounted on one end of the hollow U-shaped rod (134) away from the placement plate (11), and the stabilizing frame (136) is fixedly mounted on the front side of the battery pack (5).

5. The snap-on impact wrench according to claim 4, characterized in that: A linkage spring (137) is provided between the stabilizing plate (132) and the stabilizing rod (133), and one end of the hollow U-shaped rod (134) close to the placement plate (11) is provided as an inclined surface.

6. The snap-on impact wrench according to claim 5, characterized in that: The inner wall of the stabilizing frame (136) is provided with a corrugated groove, the rubber block (135) contacts the corrugated groove, and the hollow U-shaped rod (134) contacts the top of the placement plate (11).

7. The snap-on impact wrench according to claim 6, characterized in that: The protective device comprises a linkage frame (141), a fixing plate (142), a cross frame (143), a load-bearing plate (144), an L-shaped rod (145), a support plate (146), a support rod (147) and a limit plate (148), wherein the linkage frame (141) is fixedly mounted on one end of the hollow U-shaped rod (134) away from the stabilizing frame (136), the fixing plate (142) is fixedly mounted on the top of the base (1), and the cross frame (143) is fixedly mounted on the fixing plate (142). The bottom portion is provided with a load-bearing plate (144) which is slidably mounted on the inner wall of the cross frame (143); the L-shaped rod (145) is fixedly mounted on the side of the load-bearing plate (144) away from the fixed plate (142); the support plate (146) is slidably mounted on the inner wall of the cross frame (143); the support rod (147) is fixedly mounted on the side of the support plate (146) away from the load-bearing plate (144); and the limit plate (148) is fixedly mounted on the side of the support rod (147) away from the load-bearing plate (144).

8. The snap-on impact wrench according to claim 7, characterized in that: A No. 1 spring is provided between the support plate (146) and the cross frame (143), liquid is provided inside the cross frame (143), and the support plate (146) is in contact with the inner wall of the linkage frame (141).

9. A method for using a snap-on impact wrench, using the snap-on impact wrench according to claim 8, characterized in that: The following steps are involved: Step 1: When the battery pack (5) needs to be installed inside the base (1), first manually pull the protective rod (10) to move away from the limiting rod (8), and the protective rod (10) moves away from the limiting rod (8) to break away from the contact with the protective groove (9) and release the limit on the limiting rod (8); Step 2: After the limit of the limit rod (8) is released, manually pull the limit rod (8) to move away from the polygonal plate (15). The limit rod (8) moves in the direction away from the polygonal plate (15) to squeeze the limit spring (12). The limit spring (12) is squeezed by the limit rod (8) to deform and accumulate force. At the same time, the battery pack (5) is placed inside the base (1) and pushed upward. The battery pack (5) moves upward to contact the placement plate (11) and squeeze the placement plate (11); Step 3: The placement plate (11) is squeezed by the battery pack (5) and moves upward. The placement plate (11) moves upward to squeeze the return spring (4). The return spring (4) is squeezed by the placement plate (11) and deforms and accumulates force. When the battery pack (5) continues to move upward so that the limit rod (8) contacts the placement groove (6); Step 4: Under the elastic force of the limit spring (12), the limit rod (8) moves toward the direction close to the polygonal plate (15) and contacts the inner wall of the placement groove (6) to complete the installation of the battery pack (5). After the battery pack (5) is installed, the impact wrench body (2) is manually operated to perform the operation.

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