Sealing structure of electric hammer

Abstract

The utility model discloses a sealing structure of an electric hammer, which relates to the technical field of electric hammers and comprises an electric hammer rear shell, an electric hammer integrated front shell is arranged on the front side of the electric hammer rear shell, a hammer body is arranged in an inner cavity of the electric hammer integrated front shell, and the front end of the hammer body penetrates to the front side of the electric hammer integrated front shell. A fixed butt joint ring is fixedly installed on the foremost side of the inner ring of the electric hammer rear shell, an aluminum alloy sealing mechanism is arranged on the front side of the fixed butt joint ring, and the aluminum alloy sealing mechanism is located in an inner cavity of the electric hammer integrated front shell. According to the electric hammer, the aluminum alloy sealing shell, the sealing track groove, the sealing ring and the locking cylinder are matched with one another, so that the motor in the inner cavity of the electric hammer rear shell and the gear assembly, in charge of driving the hammer body, of the motor can be sealed and protected, and dust generated when the hammer body works is prevented from falling to the motor in the electric hammer rear shell through the sealing ring; and the sealing ring can be conveniently fixed and detached, so that the service life of the motor is effectively prolonged.

Description

Technical Field

[0001] This utility model relates to the field of electric hammer technology, specifically to a sealing structure for an electric hammer. Background Technology

[0002] An electric hammer is a multi-functional power tool that combines the features of an electric drill and an impact drill. It can perform both drilling and chiseling operations. It typically consists of a drive unit and a hammer head. It works by converting electrical energy into mechanical energy. Its internal drive unit is powered by an electric source, transforming rotary motion into reciprocating motion to drive the hammer head. Electric hammers are characterized by their compact structure, simple operation, and high efficiency. They drill faster than traditional drilling tools, and are quieter and less vibrating, making them easy to carry and use. However, existing technologies have the following problems:

[0003] Because existing electric hammers are mostly used for chiseling walls and other similar tasks, they often generate a lot of dust during the chiseling process. In order to ensure heat dissipation, the outer shell usually has ventilation holes. This means that a large number of dust particles generated during chiseling can enter the inner cavity of the electric hammer shell through these ventilation holes, thereby damaging the core electronic components such as the internal motor and affecting the service life of the electric hammer. Utility Model Content

[0004] This invention provides a sealing structure for an electric hammer to solve the problems mentioned in the background art.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0006] A sealing structure for an electric hammer includes a rear shell of the electric hammer, an integrated front shell of the electric hammer is provided on the front side of the rear shell, a hammer body is provided in the inner cavity of the integrated front shell, the front end of the hammer body extends through to the front side of the integrated front shell, a fixed docking ring is fixedly installed on the frontmost side of the inner ring of the rear shell, an aluminum alloy sealing mechanism is provided on the front side of the fixed docking ring, the aluminum alloy sealing mechanism is located in the inner cavity of the integrated front shell, the aluminum alloy sealing mechanism includes an aluminum alloy sealing shell, a docking plate is fixedly installed on the rear end of the aluminum alloy sealing shell, the docking plate is snapped into the inner ring of the fixed docking ring, a sealing track groove is formed on the outer wall of the aluminum alloy sealing shell, and a sealing ring is snapped into the inner side of the sealing track groove.

[0007] A further improvement of this utility model is that: locking cylinders are fixedly installed on both the left and right sides of the rear end of the sealing track groove; the fixed docking ring has two air inlets that pass through the front and rear; and the top of the fixed docking ring has a disassembly groove that passes through to the front.

[0008] A further improvement of this utility model is that: a threaded rod is movably installed on the front side of the inner wall of the locking cylinder, the rear end of the threaded rod extends through to the rear side of the locking cylinder and is fixedly installed with a rotating rod, a movable disk is threadedly installed on the outer wall of the threaded rod, and a push plate is fixedly installed on the left side of the front end of the movable disk.

[0009] A further improvement of the present invention is that: the front end of the push plate extends through to the inner side of the sealing track groove and is fixedly installed with a pressure plate; a plurality of conical extrusion blocks are evenly fixedly installed on the front side of the pressure plate; and the front ends of the plurality of conical extrusion blocks overlap with the rear side of the sealing ring.

[0010] A further improvement of this utility model is that a limiting slide rod is fixedly installed between the front and rear sides of the inner wall of the locking cylinder, and the movable disk is slidably connected to the limiting slide rod.

[0011] A further improvement of this utility model is that: the fixed docking ring has a placement compartment, which is located below the disassembly groove; a locking drive box is fixedly installed in the inner cavity of the placement compartment; a lifting threaded rod is movably installed on the bottom of the inner wall of the locking drive box; a lifting plate is threadedly installed on the outer wall of the lifting threaded rod; insert plates are fixedly installed on the bottom left and right sides of the lifting plate; locking holes are opened on the top left and right sides of the docking insert plate; and the bottom ends of the two insert plates respectively penetrate into the inner ring of the fixed docking ring and engage with the two docking insert plates.

[0012] A further improvement of this utility model is that the top end of the lifting threaded rod extends through to the inside of the disassembly groove and is fixedly installed with a bolt head.

[0013] Due to the adoption of the above technical solution, the technological progress achieved by this utility model compared to the prior art is as follows:

[0014] 1. This utility model provides a sealing structure for an electric hammer. Through the cooperation between the aluminum alloy sealing shell, the sealing track groove, the sealing ring, and the locking cylinder, the motor in the inner cavity of the electric hammer's rear shell and the gear assembly that drives the hammer can be sealed and protected. The sealing ring prevents dust from falling into the motor inside the rear shell of the electric hammer during operation and facilitates the fixing and disassembly of the sealing ring, effectively extending the service life of the motor.

[0015] 2. This utility model provides a sealing structure for an electric hammer. Through the mutual cooperation between the fixed docking ring, disassembly groove, locking drive box, bolt head, docking plate, and locking hole, the overall aluminum alloy sealing shell can be quickly disassembled and assembled with the fixed docking ring at the front end of the electric hammer's rear shell. This facilitates rapid inspection and maintenance of the parts protected by the inner cavity, ensuring sealing performance while improving maintenance efficiency. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the internal structure of the integrated front shell of the electric hammer in this utility model.

[0018] Figure 3 This is a schematic diagram of the aluminum alloy sealing mechanism of this utility model.

[0019] Figure 4 This is a schematic cross-sectional view of the locking cylinder of this utility model.

[0020] Figure 5 This is a cross-sectional schematic diagram of the locking drive box of this utility model.

[0021] In the diagram: 1. Rear shell of the electric hammer; 11. Fixed docking ring; 111. Air inlet; 112. Disassembly groove; 113. Locking drive box; 1131. Lifting threaded rod; 1132. Lifting plate; 1133. Insert plate; 1134. Bolt head; 2. Integrated front shell of the electric hammer; 21. Aluminum alloy sealing mechanism; 211. Aluminum alloy sealing shell; 212. Sealing track groove; 213. Sealing ring; 214. Locking cylinder; 2141. Threaded rod; 2142. Rotating rod; 2143. Moving disk; 2144. Push plate; 2145. Pressure plate; 2146. Conical extrusion block; 2147. Limiting slide rod; 215. Docking insert plate; 2151. Locking socket; 3. Hammer body. Detailed Implementation

[0022] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0023] like Figure 1 , Figure 2 , Figure 3As shown, this utility model provides a sealing structure for an electric hammer, including a rear shell 1, an integrated front shell 2, and a hammer body 3 within the inner cavity of the integrated front shell 2. The front end of the hammer body 3 extends through the front side of the integrated front shell 2. A fixing ring 11 is fixedly installed on the foremost side of the inner ring of the rear shell 1. An aluminum alloy sealing mechanism 21 is located on the front side of the fixing ring 11, within the inner cavity of the integrated front shell 2. The aluminum alloy sealing mechanism 21 includes an aluminum alloy sealing element. The aluminum alloy sealing shell 211 has a docking plate 215 fixedly installed at its rear end. The docking plate 215 is snapped into the inner ring of the fixed docking ring 11. The outer wall of the aluminum alloy sealing shell 211 has a sealing track groove 212. A sealing ring 213 is snapped into the inner side of the sealing track groove 212. Locking cylinders 214 are fixedly installed on both the left and right sides of the rear end of the sealing track groove 212. The fixed docking ring 11 has two air inlets 111 that pass through from front to back. The top of the fixed docking ring 11 has a disassembly groove 112 that passes through to the front.

[0024] During use, the aluminum alloy sealing shell 211 on the front side of the fixed docking ring 11 can wrap and protect the gears and other structures inside the electric hammer rear shell 1 that are responsible for driving the hammer body 3 by the motor. At the same time, it can seal the front end of the electric hammer rear shell 1. The sealing ring 213 inside the sealing track groove 212 improves the sealing effect and prevents dust generated by the front hammer body 3 during operation from entering the inner cavity of the electric hammer rear shell 1. Meanwhile, the motor in the inner cavity of the electric hammer rear shell 1 can also dissipate heat through the air inlet 111.

[0025] like Figure 4 As shown, a threaded rod 2141 is movably installed on the front side of the inner wall of the locking cylinder 214. The rear end of the threaded rod 2141 extends through to the rear side of the locking cylinder 214 and is fixedly installed with a rotating rod 2142. A movable disc 2143 is threadedly installed on the outer wall of the threaded rod 2141. A push plate 2144 is fixedly installed on the left side of the front end of the movable disc 2143. The front end of the push plate 2144 extends through to the inner side of the sealing track groove 212 and is fixedly installed with a pressure plate 2145. Several conical extrusion blocks 2146 are evenly fixedly installed on the front side of the pressure plate 2145. The front ends of the several conical extrusion blocks 2146 overlap with the rear side of the sealing ring 213. A limiting slide rod 2147 is fixedly installed between the front and rear sides of the inner wall of the locking cylinder 214. The movable disc 2143 is slidably connected to the limiting slide rod 2147.

[0026] After the sealing ring 213 inside the sealing track groove 212 is installed, the rotating rod 2142 on the rear side of the locking cylinder 214 can be rotated to drive the threaded rod 2141 inside the locking cylinder 214 to rotate. With the threaded connection between the threaded rod 2141 and the moving disk 2143, the moving disk 2143 can be controlled to maintain a stable movement by sliding on the outer wall of the limiting slide rod 2147, thereby driving the push plate 2144 to push forward, pressing the conical extrusion block 2146 against the outer wall of the sealing ring 213. The stability of the pressure plate 2145 against the sealing ring 213 is improved by several conical extrusion blocks 2146 on the front side of the pressure plate 2145, and the sealing ring 213 is easily disassembled and replaced.

[0027] like Figure 5 As shown, the fixed docking ring 11 has a placement compartment, which is located below the disassembly groove 112. The inner cavity of the placement compartment is fixedly installed with a locking drive box 113. The bottom of the inner wall of the locking drive box 113 is movably installed with a lifting threaded rod 1131. The outer wall of the lifting threaded rod 1131 is threaded with a lifting plate 1132. The bottom left and right sides of the lifting plate 1132 are fixedly installed with insert plates 1133. The top left and right sides of the docking insert plate 215 are provided with locking insertion holes 2151. The bottom ends of the two insert plates 1133 pass through the inner ring of the fixed docking ring 11 and are engaged with the two docking insert plates 215. The top end of the lifting threaded rod 1131 passes through the inner side of the disassembly groove 112 and is fixedly installed with a bolt head 1134.

[0028] When it is necessary to repair some parts inside the aluminum alloy sealing shell 211, simply disassemble the integrated front shell 2 of the electric hammer, and then rotate the bolt head 1134 inside the disassembly groove 112 with a tool to drive the lifting threaded rod 1131 inside the locking drive box 113 to rotate. With the threaded connection between the lifting plate 1132 and the lifting threaded rod 1131, the lifting plate 1132 can be controlled to move upward inside the locking drive box 113, and drive the two insert plates 1133 to rise, so that the insert plates 1133 open from the top of the mating insert plate 215 to lock the insert. The aluminum alloy sealing shell 211 is removed from the inner ring of the fixed docking ring 11 by moving the insert plate 215 out of the hole 2151 and releasing the limiting position of the insert plate 215. During installation, the insert plate 215 is aligned with the inner ring of the fixed docking ring 11 and inserted. Then, the bolt head 1134 is reversed to drive the lifting threaded rod 1131 to reverse, thereby causing the lifting plate 1132 to drive the two insert plates 1133 to be inserted into the two locking holes 2151 on the top of the insert plate 215, thus completing the installation and fixing of the aluminum alloy sealing shell 211 and improving the efficiency of disassembly and assembly.

[0029] The working principle of the sealing structure of this electric hammer will be explained in detail below.

[0030] like Figure 1-5As shown, during use, the aluminum alloy sealing shell 211 on the front side of the fixed docking ring 11 can wrap and protect the gears and other structures inside the electric hammer rear shell 1 that drive the hammer body 3 via the motor. It also seals the front end of the electric hammer rear shell 1. The sealing ring 213 inside the sealing track groove 212 improves the sealing effect, preventing dust generated by the front hammer body 3 during operation from entering the inner cavity of the electric hammer rear shell 1. Simultaneously, the motor in the inner cavity of the electric hammer rear shell 1 can dissipate heat through the air inlet 111. Furthermore, after the sealing ring 213 inside the sealing track groove 212 is installed, heat can be dissipated through... Rotating the rotating rod 2142 on the rear side of the locking cylinder 214 causes the threaded rod 2141 inside the locking cylinder 214 to rotate. The threaded connection between the threaded rod 2141 and the moving disc 2143 controls the moving disc 2143 to maintain stable movement by sliding on the outer wall of the limiting slide rod 2147. This drives the push plate 2144 forward, pressing the conical extrusion block 2146 against the outer wall of the sealing ring 213. Several conical extrusion blocks 2146 on the front side of the pressure plate 2145 further enhance the stability of the pressure plate 2145 after it presses against the sealing ring 213. Qualitatively, when it is necessary to repair some parts inside the aluminum alloy sealing shell 211, it is only necessary to disassemble the integrated front shell 2 of the electric hammer, and then rotate the bolt head 1134 inside the disassembly groove 112 with a tool to drive the lifting threaded rod 1131 inside the locking drive box 113 to rotate. With the threaded connection between the lifting plate 1132 and the lifting threaded rod 1131, the lifting plate 1132 can be controlled to move upward in the inner cavity of the locking drive box 113, and drive the two insert plates 1133 to rise, so that the insert plates 1133 open from the top of the mating insert plate 215. The fixed insertion hole 2151 is moved out, releasing the limit on the mating plate 215. This allows the aluminum alloy sealing shell 211, along with the mating plate 215, to be removed from the inner ring of the fixed mating ring 11. During installation, the mating plate 215 is aligned with the inner ring of the fixed mating ring 11 and inserted. Then, the bolt head 1134 is reversed to drive the lifting threaded rod 1131 to reverse. This causes the lifting plate 1132 to drive the two insertion plates 1133 to be inserted into the two locking insertion holes 2151 on the top of the mating plate 215, thus completing the installation and fixing of the aluminum alloy sealing shell 211 and improving the efficiency of disassembly and assembly.

[0031] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the protection scope of the present invention.

Claims

1. A sealing structure for an electric hammer, comprising a rear shell (1) of the electric hammer, characterized in that: The electric hammer rear shell (1) is provided with an integrated electric hammer front shell (2) on the front side. The electric hammer integrated front shell (2) is provided with a hammer body (3) in its inner cavity. The front end of the hammer body (3) extends through to the front side of the electric hammer integrated front shell (2). A fixed docking ring (11) is fixedly installed on the front side of the inner ring of the electric hammer rear shell (1). An aluminum alloy sealing mechanism (21) is provided on the front side of the fixed docking ring (11). The aluminum alloy sealing mechanism (21) is located in the inner cavity of the electric hammer integrated front shell (2). The aluminum alloy sealing mechanism (21) includes an aluminum alloy sealing shell (211). A docking plate (215) is fixedly installed on the rear end of the aluminum alloy sealing shell (211). The docking plate (215) is snapped into the inner ring of the fixed docking ring (11). A sealing track groove (212) is opened on the outer wall of the aluminum alloy sealing shell (211). A sealing ring (213) is snapped into the inner side of the sealing track groove (212).

2. The sealing structure of an electric hammer according to claim 1, characterized in that: Locking cylinders (214) are fixedly installed on both the left and right sides of the rear end of the sealing track groove (212). The fixed docking ring (11) has two air inlets (111) that run through the front and back. The top of the fixed docking ring (11) has a disassembly groove (112) that runs through to the front.

3. The sealing structure of an electric hammer according to claim 2, characterized in that: A threaded rod (2141) is movably installed on the front side of the inner wall of the locking cylinder (214). The rear end of the threaded rod (2141) extends through to the rear side of the locking cylinder (214) and is fixedly installed with a rotating rod (2142). A movable disk (2143) is threadedly installed on the outer wall of the threaded rod (2141). A push plate (2144) is fixedly installed on the left side of the front end of the movable disk (2143).

4. The sealing structure of an electric hammer according to claim 3, characterized in that: The front end of the push plate (2144) extends through the inner side of the sealing track groove (212) and is fixedly installed with a pressure plate (2145). Several conical extrusion blocks (2146) are evenly fixedly installed on the front side of the pressure plate (2145), and the front ends of the several conical extrusion blocks (2146) overlap with the rear side of the sealing ring (213).

5. The sealing structure of an electric hammer according to claim 4, characterized in that: A limiting slide rod (2147) is fixedly installed between the front and rear sides of the inner wall of the locking cylinder (214), and the moving disk (2143) is slidably connected to the limiting slide rod (2147).

6. The sealing structure of an electric hammer according to claim 1, characterized in that: The fixed docking ring (11) has a placement compartment, which is located below the disassembly groove (112). The inner cavity of the placement compartment is fixedly installed with a locking drive box (113). The bottom of the inner wall of the locking drive box (113) is movably installed with a lifting threaded rod (1131). The outer wall of the lifting threaded rod (1131) is threaded with a lifting plate (1132). The bottom left and right sides of the lifting plate (1132) are fixedly installed with insert plates (1133). The top left and right sides of the docking insert plate (215) are provided with locking insertion holes (2151). The bottom ends of the two insert plates (1133) respectively penetrate into the inner ring of the fixed docking ring (11) and engage with the two docking insert plates (215).

7. The sealing structure of an electric hammer according to claim 6, characterized in that: The top end of the lifting threaded rod (1131) extends through the inside of the disassembly groove (112) and is fixedly installed with a bolt head (1134).

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