An impact tool

Abstract

The utility model relates to the field of impact tool, concretely relates to an impact tool, including handle, the handle top is fixed with the shell, the shell rear end with handle rear end fixed with arc auxiliary handle, handle with shell inboard is fixed with impact subassembly, handle with shell inboard still is fixed with two -way air -cooled subassembly, through the cooperation of shell, handle, impact subassembly and two -way air -cooled subassembly of setting, not only can have the function of impact drilling, but also can very good to piston cylinder and motor carry out heat dissipation, can realize the function of two -way heat dissipation, improve heat dissipation effect greatly, be favorable to prolong the service life of impact tool.

Description

Technical Field

[0001] This utility model relates to the field of impact tools, specifically to an impact tool. Background Technology

[0002] Impact tools, such as electric picks and electric hammers, are widely used power tools. An electric hammer is based on an electric drill, but with the addition of a piston driven by an electric motor and connected by a crankshaft. This piston compresses air reciprocally within a cylinder, causing periodic changes in air pressure. These changing air pressures drive a hammer within the cylinder to repeatedly strike the top of the drill bit, essentially striking the drill bit with a hammer. An electric pick is a double-insulated handheld power tool powered by a single-phase series-wound electric motor. It is safe, reliable, efficient, and easy to operate, and is widely used in pipeline laying, machinery installation, water supply and drainage construction, interior decoration, port facility construction, and other construction projects. It is suitable for use with picks or other appropriate accessories, such as chisels and shovels, to break, level, excavate, groove, and cut concrete, masonry structures, and asphalt pavements.

[0003] While existing impact tools can achieve the function of drilling through impact with a drill bit, their heat dissipation performance is poor. Although some impact tools on the market have heat dissipation functions, they usually only dissipate heat in one direction, and the heat dissipation effect needs to be further improved.

[0004] Therefore, it is necessary to invent an impact tool. Utility Model Content

[0005] Therefore, this utility model provides an impact tool to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an impact tool, including a handle, a housing fixed to the top of the handle, an arc-shaped auxiliary handle fixed to the rear end of the housing and the rear end of the handle, an impact component fixed to the inner side of the handle and the housing, and a bidirectional air-cooling component fixed to the inner side of the handle and the housing.

[0007] Preferably, the impact assembly includes a motor, which is vertically fixed inside the handle. A connecting shaft is rotatably mounted on the top of the inside of the handle via a bearing. A driven gear is fixed at the bottom of the connecting shaft. A drive gear is fixed at the top of the motor output shaft. The drive gear meshes with the driven gear. An eccentric wheel is fixed at the top of the connecting shaft. A connecting rod is rotatably connected to the eccentric wheel.

[0008] Preferably, a piston cylinder is longitudinally fixed inside the outer casing, a piston is slidably installed inside the piston cylinder, the front end of the connecting rod is rotatably connected to the piston, and a hammer is also slidably installed inside the front side of the piston cylinder.

[0009] Preferably, the impact assembly further includes a hammer head, which is sleeved on the front end of the housing, and a guide rod is fixed to the rear end of the hammer head, with the rear end of the guide rod abutting against the front end of the hammer.

[0010] Preferably, a return spring is fitted on the hammer head, with the front end of the return spring fixed to the surface of the hammer head and the rear end of the return spring fixed to the surface of the outer shell.

[0011] Preferably, the bidirectional air-cooling assembly includes bidirectional fan blades, which are fixed to the surface of the motor output shaft. The bottom of the handle has several first air inlets, the bottom front end of the housing has several second air inlets, and the top front end of the housing has several third air inlets.

[0012] Preferably, the handle has several air outlets on its side, and the air outlets are located around the bidirectional fan blades.

[0013] The beneficial effects of this utility model are: by using the shell, handle, impact component and bidirectional air-cooling component together, it can not only have the function of impact drilling, but also effectively dissipate heat from the piston cylinder and motor, thus achieving bidirectional heat dissipation, greatly improving the heat dissipation effect and helping to extend the service life of the impact tool. Attached Figure Description

[0014] Figure 1 This is a structural schematic diagram of the present invention;

[0015] Figure 2 A schematic diagram of the handle provided by this utility model;

[0016] Figure 3 A top view of the bidirectional fan blade provided by this utility model;

[0017] Figure 4 A schematic diagram of the structure of the bidirectional fan blade provided by this utility model.

[0018] In the diagram: 1. Handle; 2. Housing; 3. Arc-shaped auxiliary handle; 4. Motor; 5. Bearing; 6. Connecting shaft; 7. Driven gear; 8. Drive gear; 9. Eccentric wheel; 10. Connecting rod; 11. Piston cylinder; 12. Piston; 13. Hammer; 14. Hammer head; 15. Guide rod; 16. Return spring; 17. Bidirectional fan blade; 18. First air inlet; 19. Second air inlet; 20. Third air inlet; 21. Air outlet. Detailed Implementation

[0019] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0020] Please refer to the appendix. Figures 1-4 The present invention provides an impact tool, including a handle 1, a housing 2 fixed to the top of the handle 1, and an arc-shaped auxiliary handle 3 fixed to the rear end of the housing 2 and the rear end of the handle 1. It should be noted that the arc-shaped auxiliary handle 3 allows the operator to hold the impact tool with both hands, and a switch and power cord are fixed on the arc-shaped auxiliary handle 3. An impact component is fixed to the inside of the handle 1 and the housing 2, and a bidirectional air-cooling component is also fixed to the inside of the handle 1 and the housing 2.

[0021] The impact assembly includes a motor 4, which is vertically fixed inside the handle 1. A connecting shaft 6 is rotatably mounted on the top of the inner side of the handle 1 via a bearing 5. A driven gear 7 is fixed at the bottom of the connecting shaft 6. A drive gear 8 is fixed at the top of the output shaft of the motor 4. The drive gear 8 meshes with the driven gear 7. An eccentric wheel 9 is fixed at the top of the connecting shaft 6. A connecting rod 10 is rotatably connected to the eccentric wheel 9. A piston cylinder 11 is longitudinally fixed inside the outer casing 2. A piston 12 is slidably mounted inside the piston cylinder 11. The front end of the connecting rod 10 is rotatably connected to the piston 12. A hammer 13 is also slidably mounted on the front side inside the piston cylinder 11. Specifically, when the motor 4 is running, the drive gear 8 and the driven gear 7 can drive the connecting shaft 6 to rotate, thereby driving the eccentric wheel 9 to rotate. This can drive the piston 12 to move back and forth inside the piston cylinder 11 via the connecting rod 10, thereby causing the air pressure inside the piston cylinder 11 to change periodically. The changing air pressure drives the hammer 13 in the piston cylinder 11 to move back and forth.

[0022] The impact assembly also includes a hammer head 14, which is sleeved on the front end of the housing 2. A guide rod 15 is fixed to the rear end of the hammer head 14. The rear end of the guide rod 15 abuts against the front end of the hammer 13. A return spring 16 is sleeved on the hammer head 14. The front end of the return spring 16 is fixed to the surface of the hammer head 14, and the rear end of the return spring 16 is fixed to the surface of the housing 2. Specifically, when the hammer 13 moves back and forth, it can strike the guide rod 15 repeatedly. With the reset action of the return spring 16, the hammer head 14 can move back and forth, thus realizing the function of impact drilling.

[0023] The bidirectional air-cooling assembly includes a bidirectional fan blade 17, which is fixed to the surface of the output shaft of the motor 4. It should be noted that the bidirectional fan blade 17 has a structure where the blades draw air in from both directions and exhaust air from the center (e.g., ...). Figure 4 As shown), the bottom of the handle 1 has several first air inlets 18, the front bottom of the outer casing 2 has several second air inlets 19, the front top of the outer casing 2 has several third air inlets 20, and the side of the handle 1 has several air outlets 21. The air outlets 21 are located around the bidirectional fan blades 17. Specifically, when the motor 4 is running, it can also drive the bidirectional fan blades 17 to rotate synchronously at high speed, thereby generating suction forces in both the upper and lower directions. This allows outside air to be drawn in through the first air inlets 18, the second air inlets 19, and the third air inlets 20 and accelerated to form a cold air flow (such as...). Figure 1(As shown by the solid arrow in the middle), and then blown out from the air outlet 21 (as shown by the arrow in the middle). Figure 1 As shown by the dashed arrow, it can effectively dissipate heat from the piston cylinder 11 and the motor 4, achieving bidirectional heat dissipation, greatly improving the heat dissipation effect, and helping to extend the service life of the impact tool.

[0024] The usage process of this utility model is as follows: When using it, the operator holds the impact tool with both hands, then plugs the power cord into a 220V mains power supply, and controls the motor 4 to run through the switch. When the motor 4 runs, it drives the connecting shaft 6 to rotate through the drive gear 8 and the driven gear 7, thereby driving the eccentric wheel 9 to rotate. This drives the piston 12 to move back and forth in the piston cylinder 11 through the connecting rod 10, thereby causing the air pressure in the piston cylinder 11 to change periodically. The changing air pressure drives the hammer 13 in the piston cylinder 11 to move back and forth. When the hammer 13 moves back and forth, it can strike the guide rod 15 repeatedly. With the reset action of the return spring 16, the hammer head 14 can move back and forth, thus realizing the function of impact drilling.

[0025] Furthermore, when motor 4 is running, it can also drive the bidirectional fan blades 17 to rotate synchronously at high speed, thereby generating suction forces in both the upper and lower directions. This allows outside air to be drawn in through the first air inlet 18, the second air inlet 19, and the third air inlet 20, and accelerated to form a cold air flow (such as...). Figure 1 (As shown by the solid arrow in the middle), and then blown out from the air outlet 21 (as shown by the arrow in the middle). Figure 1 As shown by the dashed arrow, it can effectively dissipate heat from the piston cylinder 11 and the motor 4, achieving bidirectional heat dissipation, greatly improving the heat dissipation effect, and helping to extend the service life of the impact tool.

[0026] The above description is merely a preferred embodiment of this utility model. Any person skilled in the art can modify this utility model or modify it into an equivalent technical solution using the technical solution described above. Therefore, any simple modifications or equivalent substitutions made based on the technical solution of this utility model are within the scope of protection claimed by this utility model.

Claims

1. An impact tool, comprising a handle (1), a housing (2) fixed to the top of the handle (1), and an arc-shaped auxiliary handle (3) fixed to the rear end of the housing (2) and the rear end of the handle (1), characterized in that: An impact assembly is fixed to the inside of the handle (1) and the outer shell (2), and a bidirectional air-cooling assembly is also fixed to the inside of the handle (1) and the outer shell (2).

2. The impact tool according to claim 1, characterized in that: The impact assembly includes a motor (4), which is vertically fixed inside the handle (1). A connecting shaft (6) is rotatably mounted on the top of the inside of the handle (1) via a bearing (5). A driven gear (7) is fixed at the bottom of the connecting shaft (6). A drive gear (8) is fixed at the top of the output shaft of the motor (4). The drive gear (8) meshes with the driven gear (7). An eccentric wheel (9) is fixed at the top of the connecting shaft (6). A connecting rod (10) is rotatably connected to the eccentric wheel (9).

3. An impact tool according to claim 2, characterized in that: A piston cylinder (11) is longitudinally fixed inside the outer shell (2). A piston (12) is slidably installed inside the piston cylinder (11). The front end of the connecting rod (10) is rotatably connected to the piston (12). A hammer (13) is also slidably installed inside the front side of the piston cylinder (11).

4. An impact tool according to claim 3, characterized in that: The impact assembly also includes a hammer (14), which is sleeved on the front end of the outer shell (2). A guide rod (15) is fixed to the rear end of the hammer (14), and the rear end of the guide rod (15) abuts against the front end of the hammer (13).

5. An impact tool according to claim 4, characterized in that: A reset spring (16) is fitted on the hammer head (14). The front end of the reset spring (16) is fixed to the surface of the hammer head (14), and the rear end of the reset spring (16) is fixed to the surface of the outer shell (2).

6. An impact tool according to claim 2, characterized in that: The bidirectional air-cooling assembly includes a bidirectional fan blade (17), which is fixed on the output shaft surface of the motor (4). The bottom of the handle (1) is provided with several first air inlets (18), the bottom front end of the housing (2) is provided with several second air inlets (19), and the top front end of the housing (2) is provided with several third air inlets (20).

7. An impact tool according to claim 6, characterized in that: The handle (1) has several air outlets (21) on its side, and the air outlets (21) are located around the bidirectional fan blades (17).

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