Double-hand-held electric saw

Abstract

The utility model discloses a two-hand-held electric saw, and relates to the technical field of chain saws, in particular to a two-hand-held electric saw which comprises a machine shell, a motor machine shell, a cover plate and a guide plate chain, the machine shell comprises a left machine shell and a right machine shell, the left machine shell and the right machine shell are fixedly installed through a plurality of screws after being buckled, and an equipment part is arranged at the front end of the machine shell; according to the double-hand-held electric saw, the motor, the gear set, the guide plate chain and the battery pack are arranged in a matched mode, so that the double-hand-held electric saw has the effect that the low-energy-consumption small motor is adopted to drive the guide plate chain to work, the motor is in transmission connection with the guide plate chain through the gear set, gears in the gear set are planetary gears, and an output shaft of the motor drives the planetary gears to rotate; the planetary gear drives the chain wheel to rotate through the rotating shaft, the chain wheel drives the chain in the guide plate chain to rotate, in the transmission process, the motor can be a low-energy-consumption and low-power motor, the weight of the whole electric saw can be reduced, energy consumption can be reduced, and the endurance time of a battery can be prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of chain saws, in particular to a double-handheld electric saw. Background Art

[0002] Lithium-ion chainsaws are widely used in pruning, felling, and other applications. They consist of a battery pack, control panel, brushless motor, brake, chain plate, and saw chain. They offer numerous advantages, including high power, low vibration, high cutting efficiency, and low felling costs. Currently, existing lithium-ion chainsaws lack structural design and lack lubrication systems. Most chainsaws require manual lubrication, which is time-consuming and labor-intensive, reducing efficiency. Furthermore, these chainsaws utilize a direct drive connection to the motor or gears, which requires high motor power, consumes more battery power, and the chain lengthens with use, requiring adjustment, failing to meet user needs.

[0003] In a published Chinese patent application, publication number CN213044275U, the patent title is: A lithium-ion electric saw with an automatic oil pumping and refueling device. This prior art utilizes a sprocket connected to a rotating shaft, which drives an automatic oil pump. The automatic oil pump is connected to an oil tank pipe to supply oil to the guide chain, keeping the chain lubricated during operation and preventing it from getting stuck or overheating, thus solving the problems of low operating efficiency and chain waste. Although this prior art can solve the aforementioned problems, it has certain limitations in its specific implementation. This prior art uses a motor to directly drive the guide chain to rotate. This motor-driven operation requires a relatively energy-intensive motor, which consumes power quickly when powered by a battery pack. Utility Model Content

[0004] (1) Technical problems solved

[0005] In view of the deficiencies in the prior art, the present invention provides a double-handheld electric saw, which solves the problems raised in the above-mentioned background technology.

[0006] (2) Technical solution

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions: a double-handheld electric saw, comprising a casing, a motor casing, a cover plate, and a guide chain, the casing comprising a left casing and a right casing, the left casing and the right casing being fixedly installed with multiple screws after being buckled, the front end of the casing being the equipment part, and the rear end of the casing being the handle part; the motor casing is fixedly installed on a side wall of the left casing away from the right casing, a motor is provided inside the motor casing, a gear set is rotatably provided inside the equipment part of the casing, one end of the guide chain is installed on the equipment part of the casing, the output shaft end of the motor is transmission-connected to the gear set, and the gear set is transmission-connected to the guide chain; a battery pack is detachably connected to the bottom of the handle part of the casing, a switch is installed on the handle part of the casing, the battery pack is electrically connected to the motor through a wire, and the switch controls the on and off of the wire.

[0008] Optionally, a handle connecting plate is fixedly mounted on the motor casing, a handle is fixedly mounted on the handle connecting plate, one end of the handle away from the handle connecting plate is fixedly mounted to the right casing, and the handle is crank-shaped; a baffle is hingedly provided on the equipment part of the casing where the guide chain is located.

[0009] Optionally, a left handle rubber bag and a right handle rubber bag are fixedly mounted on the outer side wall of the handle of the housing.

[0010] Optionally, an oil pot and a control panel are respectively provided inside the equipment part of the casing, the control panel is electrically connected to the motor through a wire, the oil inlet nozzle of the oil pot is located outside the casing, and an oil pot cover is threadedly connected to the oil inlet nozzle of the oil pot, and the oil outlet end of the oil pot is close to the guide chain.

[0011] Optionally, a cover plate is installed on a side wall of the right casing away from the left casing, and a mounting position is formed between the right casing and the cover plate. One end of the guide chain is inserted into the mounting position between the right casing and the cover plate. A bolt is provided through the right casing. After passing through the right casing, the bolt passes through the guide chain, the cover plate, and the adjustment button in sequence. The through end of the bolt is threadedly connected with a tightening button.

[0012] Optionally, the gear group includes a rotating shaft, a gear, and a sprocket. The rotating shaft passes through the right side housing and the two are rotatably connected. The gear and sprocket are both mounted on the rotating shaft. The rotating shaft is fixedly connected to the gear and sprocket respectively. The gear is located on the left side of the right side housing, and the sprocket is located at the installation position; the output shaft end of the motor is connected to the gear transmission, and the guide chain is wound around the sprocket and the two are meshed.

[0013] Optionally, a guide plate fixing plate, an eccentric plate, and steel sleeve powder are respectively provided on the mounting position between the right side casing and the cover plate. The bolt passes through the right side casing, the guide plate fixing plate, the guide plate in the guide chain, the eccentric plate, the steel sleeve powder, and the cover plate in sequence. The through end of the bolt is threadedly connected with a nut. The adjusting button is sleeved on the outside of the nut and the two are fixedly connected. The tightening button is fixedly installed on the outer wall of the adjusting button.

[0014] (3) Beneficial effects

[0015] The utility model provides a double-handheld electric saw, which has the following beneficial effects:

[0016] The double-handheld electric saw, through the coordinated arrangement of a motor, a gear set, a guide chain, and a battery pack, has the effect of using a low-energy-consuming small motor to drive the guide chain. The motor is connected to the guide chain through a gear set, and the gears in the gear set are planetary gears. The motor output shaft drives the planetary gears to rotate, and the planetary gears drive the sprockets to rotate through the rotating shaft, and the sprockets drive the chains in the guide chain to rotate. During this transmission process, the motor can use a low-energy-consuming and low-power motor, which can not only reduce the weight of the entire electric saw, but also reduce energy consumption and increase battery life. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are merely embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0018] Figure 1 This is an exploded view of the double-handheld electric saw of the present invention;

[0019] Figure 2 This is a left-side structural diagram of a double-hand-held electric saw of the present invention;

[0020] Figure 3 This is a schematic diagram of the three-dimensional structure of the motor housing in the double-handheld electric saw of the present invention;

[0021] Figure 4 This is a schematic diagram of the three-dimensional structure of the left side housing of the double-hand-held electric saw of the present invention;

[0022] Figure 5 This is a schematic diagram of the three-dimensional structure of the motor in the double-handheld electric saw of the present invention;

[0023] Figure 6 This is a schematic diagram of the right side structure of the double-hand-held electric saw of the present invention;

[0024] Figure 7 This is a schematic diagram of the three-dimensional structure of the cover plate in the double-hand-held electric saw of the present invention;

[0025] Figure 8 The figure is a schematic diagram of the three-dimensional structure of the right side housing of the double-hand-held electric saw of the present invention.

[0026] In the figure: 1. Handle connecting piece; 2. Motor housing; 3. Left side housing; 5. Motor; 6. Switch card; 7. Switch; 8. Oil can; 9. Oil can cover; 10. Bolt; 12. Right side housing; 13. Right handle rubber coating; 14. Sprocket; 15. Guide plate fixing plate; 16. Eccentric plate; 17. Steel sleeve powder; 18. Cover plate; 19. Nut; 20. Adjustment button; 21. Tightening button; 22. Baffle; 23. Handle; 24. Guide chain; 25. Left side handle rubber coating; 26. Gear set; 27. Control panel; 28. Oil pump; 29. ​​Oil pump switch; 30. Pin; 31. Battery pack; 32. Shaft. DETAILED DESCRIPTION

[0027] The technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended only to facilitate the description of the present invention and simplify the description. They do not indicate or imply that the device or element referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indications or implications.

[0028] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances. Obviously, the embodiments described are only some of the embodiments of this utility model, and not all of them.

[0029] See also Figures 1 to 8The utility model provides a technical solution: a double-handheld electric saw, including a casing, a motor casing 2, a cover plate 18, and a guide chain 24. The casing includes a left casing 3 and a right casing 12. The left casing 3 and the right casing 12 are fixed with multiple screws after being buckled together. The front end of the casing is the equipment part, and the rear end of the casing is the handle part.

[0030] The housing is made of plastic, i.e., both the left housing 3 and the right housing 12 are made of plastic. The motor housing 2 is made of metal. The guide plate chain 24 includes a guide plate and a chain, which is wound around the outer edge of the guide plate and can rotate along the outer edge of the guide plate.

[0031] The motor casing 2 is fixedly mounted on a side wall of the left casing 3 away from the right casing 12. A motor 5 is arranged inside the motor casing 2. A gear set 26 is rotatably arranged inside the equipment part of the casing. One end of the guide chain 24 is mounted on the equipment part of the casing. The output shaft end of the motor 5 is transmission-connected to the gear set 26, and the gear set 26 is transmission-connected to the guide chain 24.

[0032] The motor housing 2 covers and protects the motor 5. The motor 5 drives the guide plate chain 24 via a gear set 26. The gear set 26 is in driving connection with the chain in the guide plate chain 24. The motor 5 drives the gear set 26, which in turn drives the chain in the guide plate chain 24 to rotate along the guide plate.

[0033] A battery pack 31 is detachably connected to the lower portion of the handle of the housing. A switch 7 is installed on the handle of the housing. The battery pack 31 is electrically connected to the motor 5 through a wire, and the switch 7 controls the on and off of the wire.

[0034] Among them, a battery slot is provided under the handle of the casing, and the battery pack 31 is pluggable and slidingly set in the battery slot under the handle of the casing. The trigger element of the switch 7 is set on the wire, and the switch 7 controls the on and off of the wire. The battery pack 31 is used to power the motor 5. The handle of the casing is embedded with a sliding switch card 6. After the switch card 6 is slid into the handle of the casing, the built-in end of the switch card 6 is inserted into the switch 7. The switch card 6 limits the switch 7, making it impossible to press and trigger the switch 7, thereby achieving control of the switch 7 and preventing children from accidentally touching the switch 7. The battery pack 31 is electrically connected to the pin 30 through a wire, and the pin 30 is used to charge the battery pack 31.

[0035] Specifically, a handle connecting piece 1 is fixedly mounted on the motor housing 2, and a handle 23 is fixedly mounted on the handle connecting piece 1. The end of the handle 23 away from the handle connecting piece 1 is fixedly mounted to the right housing 12. The handle 23 is in the shape of a crank. A baffle 22 is hingedly mounted on the equipment part of the housing and located where the guide chain 24 is located.

[0036] The handle connecting piece 1 is used to fix the handle 23. The handle 23 is used to facilitate the staff to hold it. The baffle 22 is used to block the debris of the cut object and prevent the debris of the cut object from drifting to the side where the staff is.

[0037] More specifically, a left handle rubber bag 25 and a right handle rubber bag 13 are fixedly mounted on the outer side wall of the handle portion of the housing.

[0038] The left handle rubber coating 25 and the right handle rubber coating 13 are both made of rubber material and serve to increase friction on the handle, improving grip comfort and ensuring a secure grip. The left handle rubber coating 25 is fixedly mounted to the outer wall of the handle on the left side of the housing 3. The right handle rubber coating 13 is fixedly mounted to the outer wall of the right side of the housing 12.

[0039] Specifically, an oil pot 8 and a control panel 27 are respectively provided inside the equipment part of the casing. The control panel 27 is electrically connected to the motor 5 through a wire. The oil inlet nozzle of the oil pot 8 is located outside the casing, and an oil pot cover 9 is threadedly connected to the oil inlet nozzle of the oil pot 8. The oil outlet end of the oil pot 8 is close to the guide chain 24.

[0040] The oil pot 8 contains lubricating oil, which is used to increase the lubricity of the guide chain 24. An oil pump 28 is also provided inside the equipment portion of the housing. An oil pump switch 29 is provided on the handle of the housing. The oil pump switch 29 is connected to the oil pump 28 control and is used to control the start and stop of the oil pump 28. The medium inlet end of the oil pump 28 is fixedly mounted to the oil outlet end of the oil pot 8 and the two are connected. The medium outlet end of the oil pump 28 is located at the guide chain 24. The oil pump 28 is used to extract the lubricating oil from the oil pot 8 and spray the lubricating oil on the guide chain 24 to improve the lubricity of the lubricating oil.

[0041] Specifically, a cover plate 18 is installed on a side wall of the right side casing 12 away from the left side casing 3. A mounting position is formed between the right side casing 12 and the cover plate 18. One end of the guide chain 24 is inserted into the mounting position between the right side casing 12 and the cover plate 18. A bolt 10 is provided through the right side casing 12. After passing through the right side casing 12, the bolt 10 passes through the guide chain 24, the cover plate 18, and the adjusting button 20 in sequence. The passing end of the bolt 10 is threadedly connected with a tightening button 21.

[0042] Bolt 10 secures the guide chain 24 to the mounting position between the right side housing 12 and the cover 18. The guide plate of the guide chain 24 has an elongated hole, through which bolt 10 passes. The adjustment knob 20 and tightening knob 21 are used to adjust the distance the guide plate retracts into or out of the housing. When the guide plate is extended out of the housing, the chain is tightened on the guide plate, thereby adjusting the chain tension.

[0043] To be more specific, the guide plate fixing piece 15, the eccentric piece 16, and the steel sleeve powder 17 are respectively provided on the installation position between the right side casing 12 and the cover plate 18. The bolt 10 passes through the right side casing 12, the guide plate fixing piece 15, the guide plate, the eccentric piece 16, the steel sleeve powder 17, and the cover plate 18 in sequence. The through end of the bolt 10 is threadedly connected with a nut 19, the adjusting button 20 is sleeved on the outside of the nut 19 and the two are fixedly connected, and the tightening button 21 is fixedly installed on the outer wall of the adjusting button 20.

[0044] When the guide plate in the guide chain 24 needs to be effectively fixed in the installation position, the tightening knob 21 is turned clockwise, and the tightening knob 21 drives the adjusting knob 20 to rotate clockwise, and the adjusting knob 20 drives the nut 19 to rotate clockwise, and the nut 19 is screwed relative to the bolt 10, and the nut 19 pushes the cover plate 18, and the cover plate 18 pushes the steel sleeve powder 17, the eccentric piece 16, and the guide plate in the guide chain 24 in sequence, thereby tightly pressing the guide plate and effectively fixing the guide plate in the guide chain 24. When the guide plate in the guide chain 24 needs to be loosened, the tightening knob 21 is turned counterclockwise, which is the opposite of the above method.

[0045] More specifically, the gear assembly 26 includes a rotating shaft 32, a gear, and a sprocket 14. The rotating shaft 32 extends through the right side housing 12 and is rotatably connected to the gear and sprocket 14. The gear and sprocket 14 are both mounted on the rotating shaft 32 and fixedly connected to the gear and sprocket 14, respectively. The gear is located on the left side of the right side housing 12, and the sprocket 14 is located in the mounting position. The output shaft of the motor 5 is in transmission connection with the gear, and the guide chain 24 is wound around the sprocket 14 and meshes with the sprocket 14.

[0046] The output shaft of motor 5 is fixedly mounted with a planetary gear, which meshes with the gear. When motor 5 is started, the output shaft of motor 5 rotates the planetary gear, which in turn rotates the meshed gear. The gear then rotates sprocket 14 via shaft 32, which in turn rotates the chain in the guide plate chain 24, which then rotates along the outer edge of the guide plate.

[0047] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. Double-hand-held electric saw, characterized by: The invention comprises a housing, a motor housing (2), a cover plate (18), and a guide plate chain (24). The housing comprises a left housing (3) and a right housing (12). The left housing (3) and the right housing (12) are fastened together and fixed with a plurality of screws. The front end of the housing is the equipment part, and the rear end of the housing is the handle part. The motor housing (2) is fixedly mounted on a side wall of the left housing (3) away from the right housing (12); a motor (5) is provided inside the motor housing (2); a gear set (26) is rotatably provided inside the equipment portion of the housing; one end of the guide chain (24) is mounted on the equipment portion of the housing; an output shaft end of the motor (5) is in transmission connection with the gear set (26); and the gear set (26) is in transmission connection with the guide chain (24); A battery pack (31) is detachably connected below the handle of the housing, a switch (7) is installed on the handle of the housing, the battery pack (31) is electrically connected to the motor (5) via a wire, and the switch (7) controls the on and off of the wire.

2. The double-hand-held electric saw according to claim 1, characterized in that: A handle connecting piece (1) is fixedly mounted on the motor housing (2), a handle (23) is fixedly mounted on the handle connecting piece (1), an end of the handle (23) away from the handle connecting piece (1) is fixedly mounted on the right housing (12), and the handle (23) is crank-shaped; a baffle (22) is hingedly mounted on the equipment part of the housing at the location of the guide chain (24).

3. The double-hand-held electric saw according to claim 2, characterized in that: A left handle rubber bag (25) and a right handle rubber bag (13) are fixedly mounted on the outer side wall of the handle portion of the housing.

4. The double-hand-held electric saw according to claim 1, characterized in that: An oil pot (8) and a control panel (27) are respectively provided inside the equipment part of the housing. The control panel (27) is electrically connected to the motor (5) through a wire. The oil inlet nozzle of the oil pot (8) is located outside the housing, and an oil pot cover (9) is threadedly connected to the oil inlet nozzle of the oil pot (8). The oil outlet end of the oil pot (8) is close to the guide plate chain (24).

5. The double-hand-held electric saw according to claim 1, characterized in that: A cover plate (18) is installed on a side wall of the right side housing (12) away from the left side housing (3), and a mounting position is formed between the right side housing (12) and the cover plate (18). One end of the guide chain (24) is inserted into the mounting position between the right side housing (12) and the cover plate (18). A bolt (10) is provided through the right side housing (12). After passing through the right side housing (12), the bolt (10) passes through the guide chain (24), the cover plate (18), and the adjustment button (20) in sequence. The through end of the bolt (10) is threadedly connected with a tightening button (21).

6. The double-hand-held electric saw according to claim 5, characterized in that: The gear set (26) includes a rotating shaft (32), a gear, and a sprocket (14). The rotating shaft (32) passes through the right side housing (12) and the two are rotatably connected. The gear and the sprocket (14) are both mounted on the rotating shaft (32). The rotating shaft (32) is fixedly connected to the gear and the sprocket (14) respectively. The gear is located on the left side of the right side housing (12), and the sprocket (14) is located at the installation position. The output shaft end of the motor (5) is connected to the gear transmission, and the chain of the guide chain (24) is wound around the sprocket (14) and the two are meshed.

7. The double-hand-held electric saw according to claim 5, characterized in that: The installation position between the right side housing (12) and the cover plate (18) is respectively provided with a guide plate fixing piece (15), an eccentric piece (16), and a steel sleeve powder (17). The bolt (10) sequentially penetrates the right side housing (12), the guide plate fixing piece (15), the guide plate, the eccentric piece (16), the steel sleeve powder (17), and the cover plate (18) in the guide chain (24). The through end of the bolt (10) is threadedly connected with a nut (19). The adjusting button (20) is sleeved on the outside of the nut (19) and the two are fixedly connected. The tightening button (21) is fixedly installed on the outer side wall of the adjusting button (20).

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