Electric pruning shears

Abstract

To provide electric pruning shears that do not require an operator to carry a separate lubricating oil container, that realize real-time lubrication with an automatic lubrication function, that can reduce wear and tear on parts, that can quickly and accurately cut various branches, and that can meet the needs of different gardening pruning scenes. The device includes a housing 1, a drive mechanism installed in the housing, a support holder, a cutting mechanism installed in the support holder, and a control mechanism installed in the housing. The support holder is installed on the top end of the drive mechanism, and the control mechanism is electrically connected to the drive mechanism and is used to control the start and stop of the drive mechanism.

Description

[Technical Field]

[0001] This utility model relates to the technical field of electric pruning shears, and specifically refers to a type of electric pruning shears. [Background technology]

[0002] Electric pruning shears are efficient, labor-saving gardening tools widely used for tasks such as pruning fruit trees and shaping hedges. Typically, a motor drives a transmission mechanism, causing a movable blade to oscillate back and forth relative to a fixed blade, achieving the cutting action. During operation, friction frequently occurs between moving parts such as the router, oscillating gear, and main shaft, which are prone to wear over long periods of use, affecting cutting efficiency and the tool's lifespan. Therefore, regular lubrication and maintenance of these moving parts is highly necessary.

[0003] Existing electric pruning shears typically lack a convenient built-in lubrication system. Operators typically must provide their own lubricant or grease and periodically remove certain housings or components to manually apply it. This method poses numerous inconveniences. First, operators must carry the lubricant separately, which is particularly inconvenient when working outdoors. Second, manual application makes it difficult to accurately control the amount of oil, resulting in excessive oil contamination of the work area or insufficient oil, resulting in insufficient lubrication. Furthermore, not only is the removal process cumbersome, increasing maintenance time, but frequent removal and installation can also adversely affect the connection structure and sealing performance of the equipment itself. Furthermore, because the tool cannot be lubricated in real time while in use, moving parts may experience dry friction due to grease depletion or loss during long periods of use, accelerating wear.

[0004] Therefore, to solve the above technical problems, an electric pruning shears has been designed. Summary of the Invention

[0005] The technical problem that this utility model aims to solve is to provide an electric pruning shears that overcomes the deficiencies of the above-mentioned technology. [Means for solving the problem]

[0006] The technical solution provided by this utility model to solve the above technical problems is an electric pruning shears, which includes a housing, a drive mechanism installed within the housing, a support holder, a cutting mechanism installed within the support holder, and a control mechanism installed within the housing. The support holder is installed at the upper end of the drive mechanism, and the control mechanism is electrically connected to the drive mechanism and is used to control the start and stop of the drive mechanism. The cutting mechanism includes a fixed blade, a movable blade, an oscillating gear, and a main shaft. One side of the support holder is provided with a fixed blade mounting groove, and the upper end of the support holder is provided with a main shaft hole that passes through the support holder and the blade mounting groove. The main shaft is installed in the shaft hole, and main shaft holes are also provided in the lower parts of the fixed blade and movable blade and in the upper middle part of the oscillating gear. The main shaft hole of the fixed blade is fitted onto the main shaft, and the lower part of the fixed blade is installed within the fixed blade mounting groove, which positions the fixed blade and prevents it from rotating. The movable blade is installed on the outside of the fixed blade and is rotatably connected to the main shaft via the main shaft hole. The oscillating gear is installed on the outside of the movable blade and is rotatably connected to the main shaft via a main shaft hole. Connection holes are provided on both the upper end of the oscillating gear and the middle and lower parts of the movable blade, and a connection shaft is rotatably installed within the connection hole, connecting the oscillating gear to the movable blade, thereby interlocking the oscillating gear and the movable blade. The lower end of the oscillating gear engages with a drive mechanism, which causes the oscillating gear to swing, thereby swinging the movable blade around the main shaft, thereby opening and closing the pruning shears. A tightening nut is provided on the outside of the oscillating gear on the main shaft, and an oil filler hole is provided on the other end of the main shaft, which is also provided with an oil outlet hole connected to the oil filler hole. The pruning shears also include an oil tank installed within the housing, with an oil filler pipe at the bottom of the oil tank connecting to the inside of the oil tank, the other end of the oil filler pipe connected to the oil filler hole, and a piston button at the top of the oil tank.

[0007] As an improvement, the control mechanism includes a control board, a hole board and a switch trigger, the control board is installed at the bottom inside the housing, a hole board is provided below the movable blade on the support holder, the hole board and the control board are electrically connected, and a switch trigger that works in conjunction with the hole board is rotatably provided on one side of the support holder inside the housing.

[0008] As an improvement, the driving mechanism includes a motor and a reducer connected to the motor, the lower end of the support holder is installed at the upper end of the reducer, and the output shaft of the reducer extends into the support holder, a main gear driven by the output shaft of the reducer is installed on one side of the support holder, the oscillating gear and the main gear are meshed, and the motor and the control board are electrically connected.

[0009] As an improvement, bearings are provided in the main shaft holes of both the movable blade and the oscillating gear, and both the movable blade and the oscillating gear are rotatably connected to the main shaft via the bearings.

[0010] As an improvement, a lock gear that can be connected via a key is provided at one end of the main shaft where the oil supply hole is provided, a locking part is provided on the outside of the locking gear, the locking gear and the inner wall of the locking part mesh with each other, and a locking groove is provided at the bottom of the locking part. A locking screw hole is provided below the shaft hole of the support holder, and the locking part is connected to the locking part via a bolt and the locking screw hole, which is used to secure the locking part and further lock the main shaft and lock gear. A notch is provided on one side of the locking gear of the housing to accommodate the locking part, and a protective cover is fitted into the notch. [Effects of the Invention]

[0011] The advantages of this utility model compared to existing technologies are as follows:

[0012] 1. Internal lubricant storage: A dedicated lubricant tank is installed inside the pruning shears, which can store a certain amount of lubricant, so operators do not need to carry a separate lubricant container, making it convenient to use.

[0013] 2. Automatic lubrication function: The bottom of the oil tank is equipped with an oil supply pipe that connects to the inside of the oil tank, the other end of the oil supply pipe is connected to the oil supply hole, and a piston button is installed at the top of the oil tank. By pressing the piston button, lubricating oil is sent to the oil supply hole, and lubricating oil is automatically sent to parts that need lubrication, such as the router and transmission shaft, while the pruning shears are in operation, real-time lubrication is achieved and part wear is reduced.

[0014] 3. High-efficiency cutting function: Adopting a high-performance electric drive system and sharp cutting blades, it can cut various branches quickly and accurately, meeting the needs of different gardening pruning scenes. [Brief explanation of the drawings]

[0015] [Figure 1] 1 is a front view of an electric pruning shears according to the present invention. FIG. [Figure 2] 1 is a three-dimensional structural diagram of the electric pruning shears according to the present utility model. [Figure 3] FIG. 1 is a reference diagram showing an exploded state of the electric pruning shears according to the present utility model. [Figure 4] This is a reference diagram showing the disassembled state of the driving parts and cutting parts of the electric pruning shears according to this utility model. [Figure 5] This is a structural diagram of the drive parts and oil tank of the electric pruning shears according to this utility model. [Figure 6] FIG. 1 is a front three-dimensional view of the electric pruning shears according to the present invention with the movable blades closed. [Figure 7] FIG. 1 is a rear three-dimensional view of the electric pruning shears according to the present invention with the movable blades closed. [Figure 8] FIG. 1 is an exploded view of the electric pruning shears according to the present invention with the movable blades closed. [Figure 9] 1 is a structural diagram of the main shaft of the electric pruning shears according to this utility model.

[0016] As shown in the figure: 1, housing, 2, support holder, 3, fixed blade, 4, movable blade, 5, oscillating gear, 6, main shaft, 7, fixed blade mounting groove, 8, main shaft hole, 9, connecting hole, 10, connecting shaft, 11, tightening nut, 12, oil supply hole, 13, oil tank, 14, oil pipe, 15, piston button, 16, control board, 17, hole board, 18, switch trigger, 19, motor, 20, reducer, 21, driving gear, 22, oil outlet hole, 23, lock gear, 24, lock part, 25, lock groove, 26, lock screw hole, 27, groove opening, 28, protective cover, 29, shaft hole. DETAILED DESCRIPTION OF THE INVENTION

[0017] The electric pruning shears of this utility model will be described in more detail below with reference to the drawings.

[0018] Referring to Figures 1-9, the electric pruning shears include a housing 1, a drive mechanism installed in the housing, a support holder 2, a cutting mechanism installed in the support frame 2, and a control mechanism installed in the housing 1, with the support holder 2 installed on the upper end of the drive mechanism, and the control mechanism being electrically connected to the drive mechanism and used to control the starting and stopping of the drive mechanism.

[0019] The cutting mechanism includes a fixed blade 3, a movable blade 4, an oscillating gear 5, and a main shaft 6. A fixed blade mounting groove 7 is provided on one side of the support holder 2. A shaft hole 29 is provided at the upper end of the support holder 2, passing through the support holder 2 and the fixed blade mounting groove 7. The main shaft 6 is disposed in the shaft hole 29. The fixed blade 3, the lower part of the movable blade 4, and the middle and upper part of the oscillating gear 5 are all provided with main shaft holes 8. The main shaft hole 8 of the fixed blade 3 is fitted onto the main shaft 6, and the lower part of the fixed blade 3 is installed in the fixed blade mounting groove 7. The fixed blade mounting groove 7 positions the fixed blade 3 and prevents the fixed blade 3 from rotating around the main shaft 6, thereby maintaining a fixed state. Similarly, a bearing is disposed in the main shaft hole 8 of the oscillating gear 5.

[0020] The movable blade 4 is installed outside the fixed blade 3 and is rotatably connected via the main shaft hole 8 and the main shaft 6 .

[0021] In one carefully selected version of this embodiment, a bearing is installed in the main shaft hole 8 of the movable blade 4, and the main shaft 6 is fitted through the bearing, thereby making the rotation smoother.

[0022] The drive mechanism includes a motor 19 and a reducer 20 connected to the motor 19, the lower end of the support holder 2 is installed at the upper end of the reducer 20, the output shaft of the reducer 20 extends into the support holder 2, a main driving gear 21 driven by the output shaft of the reducer 20 is provided on one side of the support holder 2, and the motor 19 is electrically connected to the control board 16.

[0023] The drive mechanism drives the cutting mechanism via a main gear 21. The oscillating gear 5 is disposed outside the movable blade 4 and is rotatably connected via a main shaft hole 8 and the main shaft 6. Connection holes 9 are provided at both the upper end of the oscillating gear 5 and the middle and lower parts of the movable blade 4. A connection shaft 10 passes through these two connection holes 9, hinge-connecting the oscillating gear 5 and the movable blade 4 and enabling interlocking between the oscillating gear 5 and the movable blade 4. The lower end of the oscillating gear 5 meshes with the main gear 21, and the drive mechanism causes the oscillating gear 5 to oscillate, which in turn causes the movable blade 4 to oscillate around the main shaft 6, thereby opening and closing the pruning shears. A clamping nut 11 is provided on the outside of the oscillating gear 5 on the main shaft 6. An oil supply hole 12 is provided at the other end of the main shaft 6, and the main shaft 6 is provided with an oil outlet hole 22 connected to the oil supply hole 12.

[0024] Specifically, when the motor 19 starts, power is transmitted to the main gear 21 via the reducer 20, and the rotation of the main gear 21 causes the oscillating gear 5 to oscillate around its main shaft hole 8. The oscillation of the oscillating gear 5 causes the movable blade 4 to oscillate back and forth around the main shaft 6 via the connecting shaft 10, thereby realizing the opening and closing cutting operation between the movable blade 4 and the fixed blade 3.

[0025] The housing 1 also includes an oil tank 13 installed within it, which is used to store a certain amount of lubricating oil. An oil pipe 14 is provided at the bottom of the oil tank 13, connecting to the interior of the oil tank 13, and the other end of the oil pipe 14 is connected to the oil fill hole 12. A piston button 15 is provided at the top of the oil tank 13.

[0026] When lubrication is required, the user presses piston button 15, and the lubricating oil in oil tank 13 is forced by pressure through oil pipe 14 into oil supply hole 12 in main shaft 6. The lubricating oil then permeates through gaps between the main shaft 6 and the mating surfaces of the bearing, shaft hole, etc., effectively lubricating the parts where movable blade 4 and oscillating gear 5 rotate around main shaft 6.

[0027] A clamping nut 11 is provided on the outside of the oscillating gear 5 on the main shaft 6 and is used to fix the axial position of the entire cutting mechanism on the main shaft 6.

[0028] The control mechanism is used to control the operation of the entire tool and includes a control board 16, a hole board 17, and a switch trigger 18. The control board 16 is installed at the bottom inside the housing 1, and the hole board 17 is provided below the movable blade 4 on the support holder 2 and is electrically connected to the control board 16. The switch trigger 18, which is linked to the hole board 17, is rotatably provided on one side of the support holder 2 inside the housing 1.

[0029] Specifically, when the user pulls the switch trigger 18, the Hall board 17 is activated to generate a signal, which is transmitted to the control board 16, which then immediately controls the start and stop of the motor 19.

[0030] A lock gear 23 is provided at one end of the main shaft 6 where the oil supply hole 12 is provided, and a lock part 24 is fitted to the outside of the lock gear 23. The lock gear 23 and the lock part 24 have inner walls that mesh with each other, and a lock groove 25 is provided at the bottom of the lock part 24.

[0031] A lock screw hole 26 is provided below the axial hole 29 of the support holder 2, and the lock part 24 is connected to the bolt via the lock screw hole 26, which is used to fix the lock part 24 and further lock the main shaft 6 and the lock gear 23.

[0032] A notch 27 for accommodating the locking part 24 is provided on one side of the locking gear 23 of the housing, and a protective cover 28 is fitted into the notch 27.

[0033] Specifically, when not in use, protective cover 28 is removed, then the end of fuel filler pipe 14 connected to fuel filler hole 12 is removed from fuel filler hole 12, after which locking component 24 is fitted into locking gear 23 and meshed with locking gear 23, and then a bolt is passed through locking groove 25 and screwed into locking screw hole 26 to secure locking component 24, and furthermore, main shaft 6 and locking gear 23 are locked, thereby preventing the electric pruning shears from being activated by accidentally touching switch trigger 18 when not in use, making them safer.

[0034] When it is necessary to use the electric pruning shears, the locking part 24 is removed, the locking gear 23 is unlocked, the oil supply pipe 14 is inserted into the oil supply hole 12, and then the protective cover 28 is placed over the pruning shears, so that the operation of the electric pruning shears can be controlled by the switch trigger 18.

[0035] When specifically implementing this utility model, In use, the user attaches the storage battery to the bottom of the housing 1, and then pulls the switch trigger 18. The control board 16 receives a signal from the Hall board 17, which starts the motor 19. The power of the motor 19 is reduced and increased in torque by the reducer 20, and then transmitted from the main gear 21 to the oscillating gear 5, which oscillates, moving the movable blade 4 relative to the fixed blade 3 and performing cutting.

[0036] During long-term operation or periodic maintenance, the user can simply press the piston button 15 at the top of the oil tank 13 to send lubricating oil to the auxiliary moving part of the main shaft 6, thereby realizing simple and timely lubrication and significantly reducing the difficulty of maintenance and wear of parts.

[0037] In describing the embodiments of this utility model, terms indicating orientations and positional relationships, such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," are used based on the orientations and positional relationships shown in the accompanying drawings or the orientations and positional relationships when the product related to this utility model is placed in a normal use state, unless otherwise specified. These terms are used merely to make the description of this utility model easier to understand and to simplify the description, and do not imply that the device or component must be in a particular orientation, or that it must be configured or operate in a particular orientation. Therefore, these terms should not be construed as limiting the technical scope of this utility model.

[0038] Furthermore, the terms "first," "second," "third," etc. are used merely for the purpose of distinction in the description and do not imply or limit the relative importance or order of such elements.

[0039] Furthermore, even when terms such as "horizontal," "plumb," and "suspended" are used, it does not mean that the components are absolutely horizontal or completely vertical or suspended. For example, "horizontal" simply indicates a relatively closer horizontal direction than "plumb," and does not mean that the structure must be completely horizontal, but is used as a concept that includes the possibility of a slight inclination.

[0040] In describing the embodiments of the present invention, "plurality" means at least two. Furthermore, in the description of the embodiments of this utility model, unless otherwise expressly specified or limited, terms such as "placement," "mounting," "connection," and "connection" should be interpreted broadly. For example, these may refer to fixed connections, detachable connections, or integral connections. They may also refer to mechanical or electrical connections, direct connections, or indirect connections via an intermediary member. Furthermore, these terms may also include a state in which the interiors of two components are in fluid or electrical communication. Those skilled in the art will be able to appropriately understand the specific meanings of these terms in this utility model depending on the specific configuration.

[0041] Although the present utility model and its embodiments have been described above, these descriptions are not intended to limit the present utility model. Furthermore, the configurations shown in the accompanying drawings are merely one embodiment of the present utility model, and the actual structure is not limited to these. In short, a person skilled in the art may, based on the suggestions provided by the disclosure of the present utility model, devise structural forms and embodiments that are substantially identical to the technical solution of the present utility model without departing from the creative concept of the present utility model, without requiring any creative effort. All such variations and modifications are intended to fall within the scope of protection of the present utility model.

Claims

1. An electric pruning shears, a housing, a drive mechanism installed in the housing, a support holder, a cutting mechanism installed in the support holder, and a control mechanism installed in the housing, wherein the support holder is installed on an upper end of the drive mechanism, and the control mechanism is electrically connected to the drive mechanism and is used to control start and stop of the drive mechanism; the cutting mechanism includes a fixed blade, a movable blade, a swing gear, and a main shaft, one side of the support holder is provided with a fixed blade mounting groove, the upper end of the support holder is provided with a main shaft hole penetrating the support holder and the fixed blade mounting groove, the main shaft is installed in the main shaft hole, the fixed blade, the lower part of the movable blade, and the middle upper part of the swing gear are all provided with main shaft holes, the main shaft hole of the fixed blade is fitted onto the main shaft, and the lower part of the fixed blade is installed in the fixed blade mounting groove, the fixed blade mounting groove positions the fixed blade and is configured to prevent it from rotating, the movable blade is mounted on the outside of the fixed blade and rotatably connected to the main shaft via the main shaft hole, the oscillating gear is mounted on the outside of the movable blade and rotatably connected to the main shaft via the main shaft hole, the upper end of the oscillating gear and the middle and lower parts of the movable blade are both provided with connection holes, a connection shaft connecting the oscillating gear and the movable blade is rotatably mounted within the connection hole, realizing the interlocking of the oscillating gear and the movable blade, the lower end of the oscillating gear meshes with the drive mechanism, the drive mechanism oscillates the oscillating gear, and further oscillates the movable blade around the main shaft to open and close the pruning shears. A locking nut is provided on the outside of the oscillating gear on the main shaft, an oil supply hole is provided at the other end of the main shaft, and an oil outlet hole connected to the oil supply hole is provided on the main shaft, The electric pruning shears also include an oil tank installed within the housing, a fuel supply pipe connected to the inside of the oil tank at the lower end of the oil tank, the other end of the fuel supply pipe connected to an oil supply hole, and a piston button at the upper end of the oil tank.

2. The electric pruning shears described in claim 1, characterized in that the control mechanism includes a control board, a hole board, and a switch trigger, the control board is installed at the bottom inside the housing, the hole board is provided below the movable blade on the support holder, the hole board and the control board are electrically connected, and a switch trigger that works in conjunction with the hole board is rotatably provided on one side of the support holder inside the housing.

3. The electric pruning shears described in claim 2, characterized in that the drive mechanism includes a motor and a reducer connected to the motor, the lower end of the support holder is installed at the upper end of the reducer, and the output shaft of the reducer extends into the support holder, a main gear driven by the output shaft of the reducer is provided on one side of the support holder, the oscillating gear and the main gear are meshed, and the motor and the control board are electrically connected.

4. The electric pruning shears according to claim 1, characterized in that bearings are provided in the main shaft holes of both the movable blade and the oscillating gear, and both the movable blade and the oscillating gear are rotatably connected to the main shaft via the bearings.

5. A lock gear is provided at one end of the main shaft where the oil supply hole is provided, and a lock part is provided on the outside of the lock gear, and the lock gear and the inner wall of the lock part are engaged with each other, and a lock groove is provided at the bottom of the lock part, a lock screw hole is provided below the shaft hole of the support holder, and the lock part is connected to a bolt through the lock screw hole, which is used to fix the lock part and further to lock the main shaft and the lock gear; The electric pruning shears according to claim 1, characterized in that a notch for accommodating the locking part is provided on one side of the locking gear of the housing, and a protective cover is fitted into the notch.

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