Lithium battery brushless pruning saw

By using brushless motors and self-lubricating systems in pruning saws, the existing pruning saws have large volume, low efficiency and lack of self-lubricating problems, achieving smaller volume, high power and convenient use.

CN222750982UActive Publication Date: 2025-04-15NING BO LIANG YE DIAN QI YOU XIAN GONG SI
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Patent Information

Application Number
CN202421304974.4
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-06-10
Publication Date
2025-04-15
Estimated Expiration
2034-06-10

AI Technical Summary

Technical Problem

The existing pruning saws are large in size, and the use of brushed motors leads to small efficacy and short service life. Some products lack the self-produced lubrication device, so the operator needs to lubricate manually, which reduces the efficiency and convenience of use.

Method used

A lithium-ion brushless pruning saw was designed, and a brushless motor was used to replace the traditional brushed motor, reducing the volume of the equipment, and achieving self-lubricating function through built-in oil pot barrels and oil pipes, avoiding the cumbersome operation of manual lubrication.

Benefits of technology

The brushless motor reduces the volume of the pruning saw by nearly one-third, and has a large power. It can easily cut logs of φ120mm. The self-lubricating function improves the convenience and practicality of use.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a lithium battery brushless pruning saw, which relates to the technical field of brushless pruning saws and comprises a main shell, a handheld part is fixedly mounted and connected on the surface of one end of the main shell, a lithium battery socket is fixedly mounted and connected on the surface of one end, far away from the main shell, of the handheld part, and a brushless motor is fixedly mounted in a driving shell. The output end of the brushless motor is fixedly connected with a chain sawtooth combining disc, the outer portion of the chain sawtooth combining disc is in meshed connection with a sawtooth chain, the inner portion of the sawtooth chain is in meshed connection with a saw guide plate used for stabilizing saw cutting transmission and adjusting tensioning, and an oil can barrel is fixedly installed in the side, close to the sawtooth chain, of the main shell. Different surfaces of the oil can barrel are communicated and connected with oil conveying pipes for lubricating the sawtooth chain and the brushless motor respectively, a positioning insertion rod is inserted into the positioning insertion pipe, the main shell penetrates into the oil can barrel and is provided with a positioning insertion hole channel for the positioning insertion rod to be inserted, and the effects of being small in size, large in power, high in efficiency, convenient to use and practical are achieved.
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Description

Technical Field

[0001] The utility model relates to the technical field of brushless pruning saws, in particular to a lithium-powered brushless pruning saw. Background Art

[0002] At present, shrubs are mostly planted in green belts on parks and municipal roads. In the process of garden maintenance, it is often necessary to trim the green belts into various shapes, and operators often use hand-held pruning saws to trim and maintain the branches of shrubs.

[0003] Existing pruning saws are not only large in size, but also mostly use brushed motors inside, which not only have low efficiency but also shorten their service life.

[0004] In addition, some pruning saws on the market cannot be equipped with lubrication devices due to their size, so operators still have to perform tedious manual lubrication operations after using them for a period of time, which reduces their efficiency and convenience of use. Utility Model Content

[0005] The purpose of the utility model is to provide a lithium-electric brushless pruning saw, which solves the technical problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a lithium-powered brushless pruning saw, comprising a main housing, a hand-held portion is fixedly mounted and connected to one end surface of the main housing, a lithium-powered socket is fixedly mounted and connected to one end surface of the hand-held portion away from the main housing, a protruding driving housing is fixedly mounted and connected to one side surface of the main housing, and a switch button and a locking button are respectively mounted on different surfaces of the hand-held portion;

[0007] A brushless motor is fixedly installed inside the drive housing, and an output end of the brushless motor is fixedly connected to a chain saw gear disk, and the external gearing of the chain saw gear disk is connected to a sawtooth chain, and the internal gearing of the sawtooth chain is connected to a saw guide plate for stabilizing sawing transmission and adjusting tension, and an oil pot barrel is fixedly installed inside the main housing on a side close to the sawtooth chain, and different surfaces of the oil pot barrel are connected to oil pipelines for lubricating the sawtooth chain and the brushless motor respectively, and an oil pot cover is threadedly connected to a surface of the oil pot barrel located on one side of the drive housing, and the surfaces of the oil pot barrel and the main housing are connected to form a threaded concave surface threadedly connected to the oil pot cover, and a positioning plug is fixedly connected to the inside of the oil pot cover, and a positioning plug rod is inserted in the positioning plug, and the main housing penetrates into the oil pot barrel to form a positioning plug hole channel for inserting the positioning plug rod, and the end of the positioning plug rod away from the positioning plug tube is fixedly connected to a special-shaped pull-out plug.

[0008] Optionally, the switch button is mounted on the lower end surface of the handheld part, and the lock button is mounted on the same side surface of the main housing as the drive housing.

[0009] Optionally, the surface of the handheld part is configured as an anti-slip and anti-sweat protective surface all around.

[0010] Optionally, a hook head is fixedly connected to the rear end center surface of the lithium battery socket away from the handheld part.

[0011] Optionally, a plurality of groups of heat dissipation slots for heat dissipation are provided through the surfaces of the lithium battery socket and the drive housing.

[0012] Optionally, an upper block shell is installed above the sawtooth chain, and bolts are threadedly fixed between the upper block shell and the main shell, and the overall shape of the upper block shell can completely cover the upper end of the sawtooth chain exposed outside the main shell.

[0013] Optionally, an adjustment knob is fixedly installed on a side surface of the main shell away from the drive shell, one end of the adjustment knob is fixedly connected to an adjustment screw, a tensioning adjustment groove is opened through the surface of the saw guide plate, the adjustment screw passes through the tensioning adjustment groove, and the threaded surface of the adjustment screw rod is threadedly connected to the inner surface of the tensioning adjustment groove.

[0014] Optionally, a rotating shaft is connected between the concave surfaces on one side of the adjusting knob for limited rotation, a rotating hand plate is sleeved on the outside of the rotating shaft, and the rotating hand plate can be rotatably received inside the concave surface on one side of the adjusting knob.

[0015] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0016] 1. The utility model effectively achieves the advantage of small size by installing a brushless motor in the lithium-powered brushless pruning saw. Compared with similar products using brushed motors, the volume is nearly one-third smaller, and the brushless motor has high power. Compared with similar products using brushed motors, it can easily cut φ120mm logs without getting stuck. Finally, the brushless motor has high efficiency. Compared with similar products using brushed motors, the number of 100*100 square wood pieces cut with the same battery pack is one-quarter more.

[0017] 2. The utility model utilizes the oil pot barrel for lubrication of the shell installed inside the main shell body, so that the operator does not need to perform cumbersome manual lubrication addition, and can use the self-lubricating mechanism inside the oil pot barrel to deliver the lubricating oil through the oil pipe to the sawtooth chain and the brushless motor for self-lubrication without the need for frequent addition. In addition, after the operator has completed the addition of lubricating oil in the oil pot barrel, the oil pot cover can be threaded and sealed at the feed port of the oil pot barrel through the threaded concave surface. Subsequently, holding the special-shaped pull-out plug, the positioning rod of the special-shaped pull-out plug is aligned with the positioning socket channel and inserted into the interior of the positioning plug tube to ensure that the oil pot cover is anti-twist-open, which effectively limits the oil pot cover, not only provides a self-lubricating effect, but also improves the practicality of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is the front view of the structure of the utility model;

[0019] Figure 2 It is a rear view of the structure of the utility model;

[0020] Figure 3 It is the internal structure diagram of some structures in the utility model;

[0021] Figure 4 It is a side cross-sectional view of a part of the structure of the utility model;

[0022] Figure 5 It is an enlarged schematic diagram of part of the structure of the utility model.

[0023] In the figure: 1-main housing, 2-drive housing, 3-hand-held part, 4-lithium battery socket, 5-hook head, 6-heat dissipation slot, 7-switch button, 8-lock button, 9-brushless motor, 10-chain saw tooth disk, 11-sawtooth chain, 12-saw guide plate, 13-tensioning adjustment slot, 14-adjusting knob, 15-rotating shaft, 16-hand plate, 17-adjusting screw, 18-upper block housing, 19-bolt, 20-oil pot barrel, 21-oil delivery pipe, 22-threaded concave surface, 23-oil pot cover, 24-positioning plug, 25-special-shaped plug, 26-positioning plug rod, 27-positioning socket channel. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] For example, see Figures 1 to 5The utility model provides a technical solution: a lithium-powered brushless pruning saw, comprising a main housing 1, a hand-held part 3 is fixedly mounted on one end surface of the main housing 1, a lithium-powered socket 4 is fixedly mounted on one end surface of the hand-held part 3 away from the main housing 1, a protruding driving housing 2 is fixedly mounted on one side surface of the main housing 1, and a switch button 7 and a locking button 8 are respectively mounted on different surfaces of the hand-held part 3;

[0026] A brushless motor 9 is fixedly installed inside the driving housing 2, and a chain saw tooth disc 10 is fixedly connected to the output end of the brushless motor 9. The outer teeth of the chain saw tooth disc 10 are connected to a sawtooth chain 11, and the inner teeth of the sawtooth chain 11 are connected to a saw guide plate 12 for stabilizing the sawing transmission and adjusting the tension. An oil pot barrel 20 is fixedly installed inside the main housing 1 on one side close to the sawtooth chain 11. Different surfaces of the oil pot barrel 20 are connected to oil pipelines 21 for lubricating the sawtooth chain 11 and the brushless motor 9 respectively. An oil pot cover 23 is threadedly connected to the surface of one side of the driving shell 20, and the surfaces of the oil pot barrel 20 and the main shell 1 are connected to form a threaded concave surface 22 threadedly connected to the oil pot cover 23. A positioning plug 24 is fixedly connected to the inside of the oil pot cover 23, and a positioning rod 26 is inserted into the positioning plug 24. The main shell 1 penetrates through the inside of the oil pot barrel 20 and is provided with a positioning hole channel 27 for inserting the positioning rod 26. The end of the positioning rod 26 away from the positioning plug 24 is fixedly connected to a special-shaped plug 25.

[0027] More specifically, in this embodiment, before use, the operator can plug the lithium battery pack into the lithium battery socket 4 to provide power, and the brushless motor 9 installed in the lithium brushless pruning saw effectively makes the pruning saw have the advantage of small size. Compared with similar products using brush motors, the volume is nearly one-third smaller, and the brushless motor 9 has high power. Compared with similar products using brush motors, it can easily cut φ120mm logs without getting stuck; finally, the efficiency of the brushless motor 9 is still high. Compared with similar products using brush motors, the number of 100*100 square wood pieces cut with the same battery pack is one-quarter more. Then, hold the handheld part 3, press the switch button 7 to start, press the lock button 8 to lock, and the output end of the brushless motor 9 in the driving housing 2 drives the chain saw tooth disk 10 to drive and rotate, and the chain saw tooth disk 10 drives the toothed saw chain 11 and the saw guide plate 12 to complete the driven sawing transmission.

[0028] The operator does not need to perform cumbersome manual lubrication. The lubricating oil can be delivered to the sawtooth chain 11 and the brushless motor 9 through the oil pipe 21 through the self-lubricating mechanism inside the oil pot barrel 20 for self-lubrication without frequent addition. In addition, after the operator has completed the addition of lubricating oil to the oil pot barrel 20, the oil pot cover 23 can be threadedly sealed at the feed port of the oil pot barrel 20 through the threaded concave surface 22. Then, holding the special-shaped pull-out plug 25, the positioning rod 26 of the special-shaped pull-out plug 25 is aligned with the positioning socket channel 27 and inserted into the interior of the positioning plug tube 24 to ensure that the oil pot cover 23 is anti-twist-open, which effectively limits the oil pot cover 23, not only providing a self-lubricating effect, but also improving the practicality of use.

[0029] Furthermore, the switch button 7 is mounted and connected to the lower end surface of the hand-held part 3, and the lock button 8 is mounted and connected to the surface of the main shell 1 on the same side as the drive shell 2. The surface of the hand-held part 3 is configured as an anti-slip and anti-sweat protective surface all around.

[0030] A hook head 5 is fixedly connected to the rear center surface of the lithium battery socket 4 away from the handheld part 3, and a plurality of heat dissipation slots 6 for heat dissipation are formed through the surface of the lithium battery socket 4 and the drive housing 2.

[0031] It is worth mentioning that the locking button 8 is located on the rear end surface of the main shell 1, which can prevent the operator from accidentally touching the locking button 8 during the sawing process. During use, the lithium battery socket 4 and the drive shell 2 can dissipate heat through the heat dissipation slot 6, and the buckle head 5 can be hung in the operator's workshop when not in use.

[0032] Furthermore, an upper block housing 18 is installed above the sawtooth chain 11, and a bolt 19 is threadedly fixed between the upper block housing 18 and the main housing 1, and the overall shape of the upper block housing 18 can completely cover the upper end of the sawtooth chain 11 exposed outside the main housing 1.

[0033] Specifically, the upper block shell 18 can shield and protect the saw chain 11 that is being sawed, which not only provides protection for the operator, but also separates and protects the trees above that do not need to be sawed, and the upper block shell 18 can be threadedly disassembled and assembled on the main shell 1 through bolts 19, which is convenient for replacement.

[0034] Embodiment 2, based on the above embodiment:

[0035] Furthermore, an adjusting knob 14 is fixedly installed on the surface of one side of the main housing 1 away from the driving housing 2, and an adjusting screw 17 is fixedly connected to one end of the adjusting knob 14. A tensioning adjusting groove 13 is penetrated through the surface of the saw guide plate 12, and the adjusting screw 17 penetrates through the tensioning adjusting groove 13, and the threaded surface of the adjusting screw 17 is threadedly connected to the inner surface of the tensioning adjusting groove 13.

[0036] A rotating shaft 15 is connected between the concave surfaces on one side of the adjusting knob 14 for limited rotation. A rotating hand plate 16 is sleeved on the outside of the rotating shaft 15 , and the rotating hand plate 16 can be rotatably received inside the concave surface on one side of the adjusting knob 14 .

[0037] More specifically, in this embodiment, the operator can also rotate the adjusting knob 14 to drive the adjusting screw 17 in the tensioning adjustment slot 13 to adjust the tension of the saw guide 12, and before rotating the adjusting knob 14, the hand plate 16 can be rotated out through the rotating shaft 15, thereby providing a rotating force for the operator.

[0038] 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 lithium-powered brushless pruning saw, comprising a main housing (1), characterized in that: A hand-held portion (3) is fixedly mounted on one end surface of the main housing (1), and a protruding drive housing (2) is fixedly mounted on one side surface of the main housing (1). A brushless motor (9) is fixedly installed inside the driving housing (2); an output end of the brushless motor (9) is fixedly connected to a chain saw tooth disc (10); the chain saw tooth disc (10) is externally toothed and connected to a sawtooth chain (11); the sawtooth chain (11) is internally toothed and connected to a saw guide plate (12) for stabilizing sawing transmission and adjusting tension; an oil pot barrel (20) is fixedly installed inside the main housing (1) on a side close to the sawtooth chain (11); different surfaces of the oil pot barrel (20) are connected to oil delivery pipes (21) for lubricating the sawtooth chain (11) and the brushless motor (9) respectively; the oil pot barrel (20) An oil pot cover (23) is threadedly connected to a surface of one side of the driving housing (2), and a threaded concave surface (22) threadedly connected to the oil pot cover (23) is provided on the surfaces of the oil pot barrel (20) and the main housing (1). A positioning plug (24) is fixedly connected to the inside of the oil pot cover (23), and a positioning plug rod (26) is inserted into the positioning plug rod (24). The main housing (1) penetrates through the inside of the oil pot barrel (20) and is provided with a positioning plug hole channel (27) for inserting the positioning plug rod (26). The end of the positioning plug rod (26) away from the positioning plug rod (24) is fixedly connected to a special-shaped plug (25).

2. A lithium-powered brushless pruning saw according to claim 1, characterized in that: A lithium battery socket (4) is fixedly mounted on the surface of one end of the handheld portion (3) away from the main housing (1), and a switch button (7) and a locking button (8) are respectively mounted on different surfaces of the handheld portion (3).

3. A lithium-powered brushless pruning saw according to claim 2, characterized in that: The switch button (7) is mounted on the lower end surface of the handheld part (3), and the lock button (8) is mounted on the same side surface of the main housing (1) as the drive housing (2).

4. The lithium-powered brushless pruning saw according to claim 2, characterized in that: The surface of the hand-held part (3) is arranged all around as an anti-slip and anti-sweat protective surface.

5. The lithium-powered brushless pruning saw according to claim 2, characterized in that: A hook head (5) is fixedly connected to the rear end center surface of the lithium battery socket (4) away from the handheld part (3).

6. The lithium-powered brushless pruning saw according to claim 2, characterized in that: The surfaces of the lithium battery socket (4) and the drive housing (2) are provided with a plurality of groups of heat dissipation slots (6) for dissipating heat.

7. The lithium-powered brushless pruning saw according to claim 1, characterized in that: An upper block shell (18) is installed above the sawtooth chain (11), and a bolt (19) is threadedly connected and fixed between the upper block shell (18) and the main shell (1), and the overall shape of the upper block shell (18) can completely cover the upper end portion of the sawtooth chain (11) exposed outside the main shell (1).

8. The lithium-powered brushless pruning saw according to claim 2, characterized in that: An adjusting knob (14) is fixedly mounted on a surface of one side of the main housing (1) away from the driving housing (2), and an adjusting screw (17) is fixedly connected to one end of the adjusting knob (14). A tensioning adjusting groove (13) is formed through the surface of the saw guide plate (12), and the adjusting screw (17) penetrates through the tensioning adjusting groove (13), and a threaded surface of the adjusting screw (17) is threadedly connected to an inner surface of the tensioning adjusting groove (13).

9. The lithium-powered brushless pruning saw according to claim 8, characterized in that: A rotating shaft (15) is connected between the concave surfaces on one side of the adjusting knob (14) in a limited rotational manner, a rotating hand plate (16) is sleeved on the outside of the rotating shaft (15), and the rotating hand plate (16) can be rotatably received inside the concave surface on one side of the adjusting knob (14).