Electric saw

Abstract

The utility model provides an electric saw, which belongs to the technical field of electric saws and is characterized in that a guide plate groove is arranged at the head of an electric saw casing, a guide plate is arranged in the guide plate groove, a chain is mounted on the guide plate, a groove position of the chain is aligned with a groove position of the guide plate, and the tail end of the chain is sleeved on a gear; a chain cover with a baffle on one side is arranged on the guide plate; the chain cover is installed on the machine shell. One end of the guide plate is provided with an adjusting part which is slidably arranged in the guide plate groove; a guide frame is further arranged on the head of the machine shell and located between the guide plate and the gear. A through hole is formed in the guide frame, and a chain tightness adjusting device penetrates through the through hole; the chain tightness adjusting device comprises a jacking rod and an adjusting piece; the jacking rod is fixedly connected with the adjusting part; a positioning block is arranged on the jacking rod, an adjusting piece is arranged on the positioning block, and a transmission piece enabling the adjusting piece to move is arranged on the adjusting piece; and part of the transmission part is exposed out of the adjusting hole of the shell. Normal work of the electric saw can be guaranteed, operation safety of operators is improved, and lubricating oil can be directly injected into the chain through the oil can on the machine shell.

Description

Technical Field

[0001] The utility model relates to the technical field of electric saws, in particular to an electric saw. Background Art

[0002] As a handheld power tool, electric saws are very portable and are often used to cut wood, stone, steel, etc. After a period of use, the chain will loosen and easily fall off and fail to work properly, which may also threaten the safety of the operator.

[0003] The relevant reference document CN117621191A discloses a speed-adjustable chain electric saw, in which one end of the adjusting rod is connected to the adjusting sleeve, the adjusting sleeve is connected to a spline sleeve, and a plurality of chain discs of different sizes are fixed side by side on the outer wall of the spline sleeve. Although the adjusting rod is fixed in position by a hand screw, it drives the adjusting sleeve to move axially to adjust the position of the chain disc, and a positioning hole is provided on the support plate provided with the chain, and the support plate is fixedly installed by screws fixed in the positioning hole, so that the support plate cannot move, and the chain cannot be adjusted after being loosened. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide an electric saw which can ensure the normal operation of the electric saw, improve the operating safety of operators, and can directly add lubricating oil to the chain through the oiler on the casing.

[0005] In order to solve the above technical problems, the utility model provides an electric saw, including a casing, a gear box is arranged in the casing, a gear is arranged in the gear box through a rotating shaft, a guide plate groove is arranged on the head of the casing, a guide plate is arranged in the guide plate groove, a chain is installed on the guide plate, the groove of the chain is aligned with the groove of the guide plate, and the end of the chain is sleeved on the gear; a chain cover with a baffle on one side is arranged on the guide plate; the chain cover is installed on the casing; an adjustment part is provided at one end of the guide plate, and the adjustment part is slidably arranged in the guide plate groove; a guide frame is also arranged at the head of the casing, the guide frame is located between the guide plate and the gear, a through hole is arranged on the guide frame, and a chain tension adjustment device is passed through the through hole; the chain tension adjustment device includes a tightening rod and an adjusting member; the tightening rod is fixedly connected to the adjusting member; a positioning block is arranged on the tightening rod, an adjusting member is arranged on the positioning block, and a transmission member for displacing the adjusting member is arranged on the adjusting member; some transmission members leak out of the adjustment hole of the casing.

[0006] By adopting the above technical solution, the guide plate can be slidably installed in the guide plate groove, and a chain tension adjustment device cooperating with the guide plate is arranged on the guide frame. The extension amount of the guide plate is adjusted by adjusting the chain tension adjustment device, thereby adjusting the tension of the chain, and the chain can be easily tensioned to ensure the normal operation of the electric saw and improve the operating safety of the operator.

[0007] Preferably, a pressure cover is provided at the front of the housing, a knob is provided on the pressure cover, and a pressing piece for pressing the guide plate is provided on the knob.

[0008] By adopting the above technical solution, the adjustment is completed, and the knob is tightened to press and position the guide plate, thereby further ensuring the working stability of the electric saw guide plate.

[0009] Preferably, the transmission member is provided with adjusting convex patterns.

[0010] By adopting the above technical solution, the friction force is increased by adjusting the convex pattern, which is beneficial to the rotation of the transmission part and improves the convenience of adjustment.

[0011] Preferably, the adjusting member is provided with an external thread, and the transmission member is provided with an internal thread.

[0012] By adopting the above technical solution, the transmission part is rotated, and the adjusting part is screwed in and out, so that the tightening rod is retracted and extended, and the guide plate is retracted and extended, so that the chain is relaxed and tensioned, with a simple structure and easy use.

[0013] Preferably, an oil pot mounting plate is provided on the casing, and the oil pot is mounted on the oil pot mounting plate.

[0014] By adopting the above technical solution, the oil pot is integrated on the handheld electric saw, and the chain on the gear is filled with oil for lubrication through the oil pot, without having to manually add oil to the chain nodes one by one, making the oiling convenient.

[0015] Preferably, an oil outlet is provided at the bottom of the oil pot, and the oil outlet is connected to a gear, and a chain is provided on the gear.

[0016] By adopting the above technical solution, the chain is refueled with lubricating oil in the oil pot, so that excessive friction and wear of gears and chains can be avoided, and the service life of the electric saw can be extended.

[0017] Preferably, an oil pot cover is provided on the oil pot, an oil filling button is provided on the oil pot cover, and the oil filling button is made of transparent rubber.

[0018] By adopting the above technical solution, the oil filling button is pressed, and the positive pressure generates pressure on the oil. The lubricating oil pressure at the bottom of the oil pot increases and is output from the oil outlet to oil the chain. The operation is convenient, and the transparent treatment of the oil filling button makes it easy to observe the oil amount in the oil pot.

[0019] Compared with the prior art, the beneficial effects of the present invention are:

[0020] 1. The guide plate of the utility model can be slidably installed in the guide plate groove, and a chain tension adjustment device matched with the guide plate is arranged on the guide frame. The extension amount of the guide plate is adjusted by adjusting the chain tension adjustment device, thereby adjusting the tension of the chain, and the chain is easily tensioned, thereby ensuring the normal operation of the electric saw and improving the operating safety of the operator.

[0021] 2. The utility model increases friction force by adjusting convex patterns on the transmission part, which is beneficial to the transmission of the transmission part and improves the convenience of adjustment.

[0022] 3. The utility model also integrates an oil pot on the casing, and an oil outlet is arranged at the bottom of the oil pot, which is connected to the gear. A chain is arranged on the gear, and the chain is directly oiled through the lubricating oil in the oil pot, so as to avoid excessive friction and wear of the gear and the chain and extend the service life of the electric saw. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is an exploded view of the utility model.

[0024] Figure 2 This is a structural diagram of the guide plate of the utility model.

[0025] Figure 3 This is a structural diagram of the chain tension adjustment device of the utility model.

[0026] Figure 4 This is a structural diagram of an oil pot of the utility model.

[0027] Figure numbers: 1. Chain cover, 2. Guide plate, 3. Adjustment part, 4. Oil pot, 5. Gear box, 6. Chain tension adjustment device, 7. Clamping rod, 8. Positioning block, 9. Adjustment part, 10. Transmission part, 11. Pressure cover, 12. Casing, 13. Baffle, 14. Oil pot mounting plate, 15. Oil outlet, 16. Oil pot cover, 17. Oil filling button, 18. Knob, 19. Guide plate groove, 20. Opening, 21. Adjustment hole. DETAILED DESCRIPTION

[0028] like Figure 1 As shown, an electric saw includes a housing 12, a gear box 5 is arranged in the housing 12, a gear is arranged in the gear box 5 through a rotating shaft, a guide plate slot 19 is arranged at the head of the housing 12, a guide plate 2 is arranged in the guide plate slot 19, a chain is installed on the guide plate 2, the slot of the chain is aligned with the slot of the guide plate 2, and the end of the chain is sleeved on the gear. A chain cover 1 with a baffle 13 on one side is arranged on the guide plate 2; the chain cover 1 is installed on the housing 12 by screws. Figure 2 As shown, the guide plate 2 has a groove for installing the chain, and the right end of the guide plate 2 is an adjustment part 3. The adjustment part 3 is slidably arranged in the guide plate groove 19; the head of the housing 12 is also provided with a guide frame, which is not shown in the figure, and is located between the guide plate 2 and the gear; the guide frame is provided with a through hole, and the chain tension adjustment device 6 is passed through the through hole.

[0029] like Figure 3As shown, the chain tension adjustment device 6 includes a tension rod 7 and an adjustment member 9; the tension rod 7 is fixedly connected to the adjustment part 3; a positioning block 8 is provided on the tension rod 7, an adjustment member 9 is provided on the positioning block 8, and a transmission member 10 for displacing the adjustment member 9 is provided on the adjustment member 9. An external thread is provided on the adjustment member 9, and an internal thread is provided on the transmission member 10. The transmission member 10 is rotated, and the adjustment member 9 is screwed in and out, so that the tension rod 7 is retracted and extended, and the guide plate 2 is retracted and extended, so that the chain is relaxed and tensioned, with a simple structure and convenient use. Part of the transmission member 10 leaks out of the adjustment hole 21 of the housing 12. Adjustment convex patterns are provided on the transmission member 10 to increase friction, facilitate the rotation of the transmission member 10, and improve the convenience of adjustment. The guide plate 12 of the present application can be slidably installed in the guide plate groove 19, and a chain tension adjustment device 6 that cooperates with the guide plate 12 is set on the guide frame. The extension amount of the guide plate 12 is adjusted by adjusting the chain tension adjustment device 6, thereby adjusting the chain tension, and the chain is easily tensioned to ensure the normal operation of the electric saw and improve the operating safety of the operator.

[0030] A pressure cover 11 is provided on the housing 12 at the guide plate 2, and a threaded knob 18 is provided on the pressure cover 11. The knob 18 is provided with a pressing member for pressing the guide plate 2. After the adjustment is completed, the knob 18 is tightened to press and position the guide plate 2, further ensuring the working stability of the electric saw guide plate 2. An opening 20 is provided on the pressure cover 11 to facilitate the rotation of the transmission member 10. The opening 20 matches the adjustment hole 21 provided on the housing 12.

[0031] An oil pot mounting plate 14 is provided on the housing 12, and an oil pot 4 is mounted on the oil pot mounting plate 14. The oil pot 4 is integrated on the handheld electric saw, and the chain on the gear is filled with oil for lubrication through the oil pot 4, and it is not necessary to manually add oil to the chain nodes one by one, so that the oiling is convenient.

[0032] like Figure 4 As shown, an oil outlet 15 is provided at the bottom of the oil pot 4, and the oil outlet 15 is connected to the gear, and a chain is provided on the gear. The chain is refueled with lubricating oil in the oil pot 4 to avoid excessive friction and wear of the gear and chain, thereby extending the service life of the electric saw.

[0033] The oil inlet of the oil pot 4 is threadedly connected to the oil pot cover 16. The oil pot cover 16 is provided with an oil filling button 17, which is made of transparent rubber. Pressing the oil filling button 17 generates pressure on the oil through positive pressure, and the lubricating oil pressure at the bottom of the oil pot 4 increases and is output from the oil outlet 15 to oil the chain, which is easy to operate. The oil filling button 17 is transparent to facilitate observation of the oil amount in the oil pot 4.

[0034] After the electric saw has been working for a period of time, the chain becomes loose. The knob 18 is rotated to turn the transmission member 10. The adjusting member 9 drives the tension rod 7 to move forward. The tension rod 7 drives the guide plate 2 to move forward, so that the center distance between the two ends of the chain increases, the chain transmission is tightened, and the appropriate tension of the electric saw chain is maintained during the operation process, so that the electric saw works normally and the safety of the electric saw operation is improved. During the chain transmission, the oil filling button 17 can also be pressed to fill the chain with lubricating oil.

[0035] Those skilled in the art should understand that the embodiments of the present invention described above and shown in the accompanying drawings are only examples and do not limit the present invention. The purpose of the present invention has been fully and effectively achieved. The functions and structural principles of the present invention have been demonstrated and explained in the embodiments. Without departing from the principles, the embodiments of the present invention may be deformed or modified in any way.

Claims

1. An electric saw, comprising a housing, a gear box arranged in the housing, a gear arranged in the gear box via a rotating shaft, a guide plate slot arranged at the head of the housing, a guide plate arranged in the guide plate slot, a chain mounted on the guide plate, a slot of the chain aligned with a slot of the guide plate, and an end of the chain sleeved on the gear; characterized in that: A chain cover with a baffle on one side is arranged on the guide plate; the chain cover is mounted on the casing; an adjustment part is arranged at one end of the guide plate, and the adjustment part is slidably arranged in the guide plate groove; a guide frame is also arranged at the head of the casing, and the guide frame is located between the guide plate and the gear, and a through hole is arranged on the guide frame, and a chain tension adjustment device is passed through the through hole; the chain tension adjustment device includes a tightening rod and an adjusting member; the tightening rod is fixedly connected to the adjusting part; a positioning block is arranged on the tightening rod, and an adjusting member is arranged on the positioning block, and a transmission member for displacing the adjusting member is arranged on the adjusting member, and part of the transmission member leaks out of the adjustment hole of the casing.

2. The electric saw according to claim 1, characterized in that: A pressure cover is arranged at the front of the casing, a knob is arranged on the pressure cover, and a pressing piece for pressing the guide plate is arranged on the knob.

3. The electric saw according to claim 1, characterized in that: The transmission member is provided with adjusting convex patterns.

4. The electric saw according to claim 1, characterized in that: The adjusting member is provided with an external thread, and the transmission member is provided with an internal thread.

5. The electric saw according to claim 1, characterized in that: An oil pot mounting plate is arranged on the casing, and an oil pot is mounted on the oil pot mounting plate.

6. The electric saw according to claim 5, characterized in that: An oil outlet is arranged at the bottom of the oil pot, and the oil outlet is connected to a gear, on which a chain is arranged.

7. The electric saw according to claim 6, characterized in that: An oil pot cover is arranged on the oil pot, and an oil filling button is arranged on the oil pot cover, and the oil filling button is made of transparent rubber.

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