Electric pruning shears

Abstract

The present invention discloses an electric pruning shear comprising a handle, a connecting rod, and a pruning unit connected in sequence. The pruning unit comprises a housing, a control mechanism, a power mechanism, a transmission mechanism, and a blade assembly connected in sequence. The power mechanism and transmission mechanism are disposed within the housing, and the blade assembly is disposed at an end of the housing away from the power mechanism. The handle is provided with a switch connected to the power mechanism, and the control mechanism is connected to the transmission mechanism. The transmission mechanism is a worm gear transmission mechanism or a ball screw transmission mechanism. The present invention is applicable to pruning shrubs, branches, and the like.

Description

Technical Field

[0001] The present invention relates to the technical field of outdoor tools, in particular to an electric pruning shear. Background Art

[0002] Pruning shears are a common outdoor tool used to prune various shrubs, branches, etc. in gardens. Electric pruning shears are widely used due to their light weight, easy operation, safety and reliability.

[0003] Existing electric pruning shears typically include a blade assembly, wherein the lower blade is fixed and the upper blade is driven by a transmission device to reciprocate up and down to prune shrubs, branches, etc. However, in existing electric pruning shears, the transmission device usually adopts a bevel gear transmission, which causes large vibration and noise during the transmission process, and the operation is unstable. Summary of the Invention

[0004] The object of the present invention is to provide an electric pruning shear, which is used to improve the transmission stability of the electric pruning shear and reduce the pruning noise of the electric pruning shear.

[0005] In order to achieve the above-mentioned purpose, the present invention provides an electric pruning shear, comprising a handle, a connecting rod and a pruning component connected in sequence, wherein the pruning component comprises a housing, a control mechanism, a power mechanism, a transmission mechanism and a blade group connected in sequence, wherein the power mechanism and the transmission mechanism are arranged in the housing, the blade group is arranged at one end of the housing away from the power mechanism, the handle is provided with a switch connected to the power mechanism, and the control mechanism is connected to the transmission mechanism; the transmission mechanism is a worm gear transmission mechanism or a ball screw transmission mechanism.

[0006] Optionally, the worm in the worm gear transmission mechanism is connected to the power mechanism, the worm wheel is provided with a pinion gear that is concentrically driven with the worm wheel, the pinion gear is engaged with the upper blade in the blade group, and the lower blade in the blade group is connected to the upper blade and fixed on the housing.

[0007] Further optionally, the upper blade includes a connected toothed tail portion and an upper cutter head, wherein the toothed tail portion is meshed with the pinion gear.

[0008] Further optionally, the hardness of the toothed tail portion is less than the hardness of the upper cutter head.

[0009] Optionally, the toothed tail portion, the upper cutter head and the lower blade are connected via a threaded connection.

[0010] Further optionally, the threaded connector is a stepped connector, comprising a cylindrical threaded end, a cylindrical middle section, and a square prism and a cuboid end section connected in sequence, wherein the cylindrical threaded end is coaxially arranged with the cylindrical middle section, and the diameter of the cylindrical threaded end is smaller than the diameter of the cylindrical middle section, the center of the cross section of the cylindrical middle section, the center point of the square cross section of the square prism, and the center point of the cuboid end section all coincide, and the area of ​​the cross section of the cylindrical middle section is smaller than the area of ​​the square cross section of the square prism, and the area of ​​the square cross section of the square prism is smaller than the area of ​​a side of the cuboid end section connected to the square prism;

[0011] The toothed tail portion and the upper cutter head are provided with circular through holes that match the cylindrical middle section, the lower blade and the housing are provided with square through holes that match the square prism, the housing is provided with a rectangular recess that matches the end of the cuboid, and the square through hole on the housing is arranged in the rectangular recess;

[0012] Starting from the end of the rectangular parallelepiped, the step-type connecting piece passes through the housing, the lower blade, the upper cutter head and the toothed tail in sequence, and the cylindrical threaded end passes through the toothed tail and is connected to the nut.

[0013] Optionally, the control mechanism includes a fixing pin arranged on the worm gear, a steering switch and a stop switch installed on the casing. As the worm gear rotates, the fixing pin touches the steering switch, and the worm gear rotates in the opposite direction. The reverse rotation of the worm gear touches the stop switch, and the worm gear stops rotating.

[0014] Optionally, the ball screw transmission mechanism includes a screw and a screw nut mounted on the screw, the screw is connected to the power mechanism, the screw nut is connected to the upper blade in the blade group, and the lower blade in the blade group is connected to the upper blade and fixed on the housing.

[0015] Further optionally, the screw nut is connected to the upper blade via a fork-shaped connecting piece.

[0016] Further optionally, the fork-shaped connecting piece is an integrally stamped fork-shaped connecting piece.

[0017] Further optionally, the fork-shaped connecting piece is connected to the screw nut via a countersunk screw.

[0018] Further optionally, the two end heads of the fork-shaped connecting piece connected to the screw nut are arc-shaped end heads.

[0019] Further optionally, a sealing ring is provided between the fork-shaped connecting member and the housing.

[0020] Optionally, the control mechanism includes a Hall sensor, the Hall sensor is connected to the lead screw nut, and the switch controls the movement of the lead screw nut through the Hall sensor.

[0021] Optionally, the power mechanism includes a DC motor and a planetary gear reducer, the input end of the planetary gear reducer is connected to the output end of the DC motor, and the output end of the planetary gear reducer is connected to the transmission mechanism.

[0022] Optionally, a power supply device for supplying power to the brushless DC motor is provided in the handle.

[0023] Optionally, the connecting rod is a telescopic connecting rod.

[0024] Optionally, the trimming component is rotatably connected to the connecting rod.

[0025] Further optionally, the trimming component is rotatably connected to the connecting rod via a rotating button, the rotating button is a T-shaped button, a boss is provided along the side surface of the upper end portion of the T-shaped button, a plurality of protrusions are evenly provided on the boss, the inner side surface of the connecting rod connected to the upper end portion is provided with a plurality of grooves matching the protrusions, and a mounting platform with a groove matching the lower end portion of the T-shaped button is provided in the casing.

[0026] Further optionally, the T-shaped button also includes a spring passing through the lower end portion and installed between the inner side surface of the upper end portion and the mounting platform.

[0027] Optionally, the blade set comprises at least one blade, and the at least one blade is made of at least two different materials.

[0028] Further optionally, the at least one blade includes a connecting portion made of a first material and a shearing portion made of a second material.

[0029] Further optionally, it is characterized in that the hardness of the first material is less than the hardness of the second material.

[0030] Optionally, the blade set includes features to enhance visibility.

[0031] Further optionally, the feature for enhancing visibility is selected from at least one of a self-luminous feature, a highly reflective feature, a fluorescent feature, a bright color feature, and a pattern feature.

[0032] Further optionally, the visibility enhancing feature is provided on an outside surface of at least one blade in the blade assembly.

[0033] After adopting the above scheme, the present invention has the following beneficial effects:

[0034] The electric pruning shears provided by the present invention include a handle, a connecting rod and a pruning component connected in sequence, wherein the pruning component includes a casing, a control mechanism, a power mechanism, a transmission mechanism and a blade group connected in sequence, wherein the power mechanism and the transmission mechanism are arranged in the casing, the blade group is arranged at one end of the casing away from the power mechanism, a switch connected to the control mechanism is provided on the handle, and the transmission mechanism is a worm gear transmission mechanism or a ball screw transmission mechanism. Using a worm gear transmission mechanism or a ball screw transmission mechanism to replace the existing bevel gear transmission mechanism can not only reduce the noise during the transmission process, but also effectively improve the transmission smoothness, thereby greatly improving the performance of the electric pruning shears. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 A schematic structural diagram of a first electric pruning shear provided in an embodiment of the present invention;

[0036] Figure 2 A schematic structural diagram of a second electric pruning shear provided in an embodiment of the present invention;

[0037] Figure 3 A schematic diagram of the partial structure of a first electric pruning shear provided in an embodiment of the present invention;

[0038] Figure 4 The local explosion of the first electric pruning shears provided by the embodiment of the present invention Figure 1 ;

[0039] Figure 5 The local explosion of the first electric pruning shears provided by the embodiment of the present invention Figure 2 ;

[0040] Figure 6 The local explosion of the first electric pruning shears provided by the embodiment of the present invention Figure 3 ;

[0041] Figure 7 The local explosion of the second electric pruning shears provided by the embodiment of the present invention Figure 1 ;

[0042] Figure 8 Schematic diagram of the partial structure of the second electric pruning shears provided in an embodiment of the present invention Figure 1 ;

[0043] Figure 9 A schematic structural diagram of a first fork-shaped connector provided in an embodiment of the present invention;

[0044] Figure 10 A schematic structural diagram of a second fork-shaped connector provided in an embodiment of the present invention;

[0045] Figure 11 Schematic diagram of the partial structure of the second electric pruning shears provided in an embodiment of the present invention Figure 2 ;

[0046] Figure 12 A schematic diagram of a partial structure of a connecting rod provided in an embodiment of the present invention;

[0047] Figure 13 The local explosion of the first electric pruning shears provided by the embodiment of the present invention Figure 4 .

[0048] Reference numerals:

[0049] 1—handle; 2—connecting rod; 21—inner tube;

[0050] 22—outer tube; 23—locking device; 3—trimming component;

[0051] 31—housing; 311—hook-shaped structure; 312—mounting platform;

[0052] 32—control mechanism; 321—fixing pin; 322—steering switch;

[0053] 323—Stop switch; 33—Power structure; 331—DC motor;

[0054] 332—Planetary gear reducer; 4—Switch; 34—Worm gear transmission mechanism;

[0055] 341—worm; 342—worm wheel; 343—pinion;

[0056] 35—ball screw transmission mechanism; 351—screw; 352—screw nut;

[0057] 36—upper blade; 361—toothed tail; 362—upper cutter head;

[0058] 37—lower blade; 38—threaded connector; 381—cylindrical threaded end;

[0059] 382—cylindrical middle section; 383—square prism; 384—rectangular parallelepiped end;

[0060] 39—fork-shaped connector; 5—countersunk screw; 6—rotating button;

[0061] 61—upper end; 62—boss; 63—protrusion;

[0062] 64—lower end portion; 65—spring. DETAILED DESCRIPTION

[0063] The present invention is described below with reference to the embodiments illustrated in the accompanying drawings. The embodiments disclosed herein are to be considered in all respects as illustrative and non-restrictive. The scope of the present invention is not limited by the following description of the embodiments but is solely defined by the claims, which include all variations within the meaning and scope of the claims.

[0064] The electric pruning shears provided by the present invention will be described below with reference to specific embodiments.

[0065] like Figures 1-3 As shown, an embodiment of the present invention provides an electric pruning shear, which includes a handle 1, a connecting rod 2, and a pruning unit 3 connected in sequence. Specifically, the pruning unit 3 includes a housing 31, a control mechanism 32, a power mechanism 33 connected in sequence, a transmission mechanism, and a blade assembly, wherein the power mechanism 33 and the transmission mechanism are disposed within the housing 31, and the blade assembly is disposed at an end of the housing 31 away from the power mechanism 33. The handle 1 is provided with a switch 4 connected to the power mechanism 33. The control mechanism is connected to the transmission mechanism, which is a worm gear transmission mechanism 34 or a ball screw transmission mechanism 35.

[0066] When using the above-mentioned electric pruning shears to prune shrubs, branches, etc., the switch 4 on the handle 1 is pressed, and the power mechanism 33 is started by the switch 4. The power mechanism 33 transmits power to the worm gear transmission mechanism 34 or the ball screw transmission mechanism 35 connected thereto, thereby starting the electric pruning shears. At the same time, the stroke control is realized through the control mechanism 32 connected to the transmission mechanism.

[0067] In the electric pruning shears provided in this embodiment, the transmission mechanism is a worm gear transmission mechanism 34 or a ball screw transmission mechanism 35. Using the worm gear transmission mechanism 34 or the ball screw transmission mechanism 35 to replace the existing bevel gear transmission mechanism can not only reduce the noise during the transmission process, but also effectively improve the transmission smoothness, thereby greatly improving the performance of the electric pruning shears.

[0068] For example, Figure 4 As shown, the blade set of the electric pruning shears may include at least one blade, and the at least one blade is made of at least two different materials.

[0069] Specifically, at least one blade may include a connecting portion made of a first material and a shearing portion made of a second material. Furthermore, the hardness of the first material is less than that of the second material, that is, the shearing portion is made of the second material with a greater hardness. This allows the blade to be used for shearing while ensuring its shearing performance while preventing damage to the blade due to stress concentration. In addition, if the shearing portion or the connecting portion is damaged, it can be replaced separately, facilitating maintenance and reducing maintenance costs. In addition, since the hardness of the first material making up the connecting portion is relatively low, this can effectively reduce the wear of the transmission structure that drives the connecting portion, thereby increasing the life of the transmission structure and thereby increasing the service life of the electric pruning shears.

[0070] For example, Figure 4 As shown, in one embodiment of the present invention, the electric pruning shears adopt a worm gear transmission. Specifically, the worm 341 in the worm gear transmission mechanism 34 is connected to the power mechanism 33, and the worm wheel 342 in the worm transmission mechanism 34 is provided with a pinion 343 that is concentrically driven with the worm wheel 342. The pinion 343 is engaged with the upper blade 36 in the blade group, and the lower blade 37 in the blade group is connected to the upper blade 36 and fixed on the housing 31.

[0071] Specifically, when the above-mentioned electric pruning shears adopt a worm gear transmission mechanism 34, the power output by the power mechanism 33 drives the worm 341 to rotate, and the pinion 343 on the worm wheel 342 meshing with the worm 341 rotates with the worm wheel 342, driving the upper blade 36 meshing with the pinion to move back and forth up and down, cooperating with the lower blade 36 to prune shrubs, etc.

[0072] Illustratively, the upper blade 36 includes a toothed tail portion 361 and an upper cutter head 362 connected thereto, wherein the toothed tail portion 361 meshes with the pinion gear 343. Specifically, the power output by the power mechanism 33 drives the worm 341 to rotate, and the pinion gear 343 on the worm wheel 342 meshing with the worm 341 rotates along with the worm wheel 342. The toothed tail portion 361 meshes with the pinion gear, driving the upper cutter head 362 connected thereto to reciprocate up and down, thereby cooperating with the lower blade 37 to trim shrubs, etc.

[0073] Specifically, the hardness of the toothed tail portion 361 is less than the hardness of the upper cutter head 362 .

[0074] Typically, the hardness of the pinion 343 is less than that of the upper blade 36 used for cutting. This causes the pinion 343 to wear severely during use of the electric pruning shears, resulting in a shorter lifespan of the electric pruning shears. In this embodiment, the upper blade 36 is divided into two parts. The upper cutter head 362 used for pruning shrubs, branches, etc. has a greater hardness, while the toothed tail portion 361 used for transmission has a relatively lower hardness. This effectively reduces the wear of the pinion 343 caused by the meshing friction with the tail portion of the upper blade 36, thereby increasing the lifespan of the pinion 343 and, in turn, the lifespan of the electric pruning shears. In addition, dividing the upper blade 36 into two parts can prevent blade breakage caused by stress concentration. If the toothed tail portion 361 or the upper cutter head 362 breaks, they can be replaced separately, facilitating maintenance and reducing maintenance costs.

[0075] For example, Figure 4 As shown, the toothed tail portion 361, the upper cutter head 362 and the lower blade 37 are connected by a threaded connection 38. Specifically, as Figure 5 As shown, the threaded connector 38 is a stepped connector, comprising a cylindrical threaded end 381, a cylindrical middle section 382, ​​a square prism 383, and a cuboid end 384, which are connected in sequence. The cylindrical threaded end 381 is coaxial with the cylindrical middle section 382, ​​and the diameter of the cylindrical threaded end 381 is smaller than the diameter of the cylindrical middle section 382. The center of the cross section of the cylindrical middle section 382, ​​the center point of the square cross section of the square prism 383, and the center point of the cuboid end 384 all coincide. The cross section area of ​​the cylindrical middle section 382 is smaller than the square cross section area of ​​the square prism 383, and the square cross section area of ​​the square prism 383 is smaller than the area of ​​the side of the cuboid end 384 where it connects to the square prism 383.

[0076] Circular through holes matching the cylindrical middle section 382 are provided on the toothed tail portion 361 and the upper cutter head 362, square through holes matching the square prism 383 are provided on the lower blade 37 and the housing 31, and a rectangular recess matching the rectangular end 384 is provided on the housing 31, and the square through hole on the housing 31 is provided in the rectangular recess.

[0077] Starting from the rectangular parallelepiped end 384 , the stepped connector passes through the housing 31 , the lower blade 37 , the upper cutter head 362 and the toothed tail 361 in sequence, and the cylindrical threaded end 39 passes through the toothed tail 361 and is connected to the nut.

[0078] Alternatively, as Figure 6As shown, the control mechanism 32 includes a fixing pin 321 provided on the worm gear 342, a steering switch 322 mounted on the housing 31, and a stop switch 323. Specifically, as the worm gear 342 rotates, the fixing pin 321 contacts the steering switch 322, causing the worm gear 342 to rotate in the opposite direction. The reverse rotation of the worm gear 342 then contacts the stop switch 323, causing the worm gear 342 to stop rotating.

[0079] For example, Figure 2 and Figure 7 As shown, in another embodiment of the present invention, the electric pruning shears adopts ball screw transmission. Specifically, the ball screw transmission mechanism 35 includes a screw rod 351 and a screw nut 352 mounted on the screw rod 351. The screw rod 351 is connected to the power mechanism 33, the screw nut 352 is connected to the upper blade 36 in the blade group, and the lower blade 37 in the blade group is connected to the upper blade 36 and fixed on the housing 31.

[0080] Specifically, when the above-mentioned electric pruning shears adopt a ball screw transmission mechanism 35, the power output by the power mechanism 33 converts the rotational motion into linear motion through the screw rod 351 and the screw nut 352, drives the screw nut 352 to move back and forth, and then drives the upper blade 36 connected to the screw nut 352 to move back and forth, and cooperates with the lower blade 36 to prune shrubs, etc.

[0081] For example, Figures 7-10 As shown, the screw nut 352 is connected to the upper blade 36 via a fork-shaped connector 39. The fork-shaped connector 39 provided in the embodiment of the present invention is a single part, has strong integrity, good structural strength, simple assembly, and can be made by stamping sheet metal, which is low in cost.

[0082] Further optionally, as Figure 10 As shown, the fork-shaped connector 39 is an integral stamped fork-shaped connector. The integral stamped fork-shaped connector does not require welding, and has a stronger structural strength and bearing capacity. If the installation space allows, the fork-shaped connector can be preferably used. Figure 10 A fork-type connecting member 39 is shown.

[0083] In addition, if Figure 8 As shown, the fork-shaped connector 39 is connected to the screw nut 352 by a countersunk screw 5. This can effectively prevent the fork-shaped connector 39 from opening outward when subjected to force. At the same time, when the upper blade 36 completes a shearing reset, the countersunk screw 5 can bear the pulling force of the fork-shaped connector 39, thereby improving the stability of the electric pruning shear structure.

[0084] It should be added that, Figure 8As shown, the two end heads of the fork-shaped connector 39 connected to the screw nut 352 are arc-shaped ends. In this way, on the one hand, the arc fit between the fork-shaped connector 39 and the screw nut 352 can be achieved. When the electric pruning shears are cutting, the screw nut 352 can bear a greater thrust to prevent the countersunk screw 5 from being pushed out; on the other hand, the fork-shaped connector 39 can also rotate relatively around the center of the arc, and the fork-shaped connector 39 will not be locked.

[0085] For example, a sealing ring may be provided between the fork-shaped connector 39 and the housing 31 to prevent foreign matter, dust, etc. from entering the housing 31 and damaging the electric pruning shears.

[0086] In addition, if Figure 11 As shown, at the position where the lower blade 37 is connected to the housing 31, the housing 31 is further provided with a hook-shaped structure 311 away from the lower blade 37, so that the cut branches can be hooked down by the hook-shaped structure to prevent the cut branches from hanging on other branches.

[0087] Optionally, in this embodiment, the control mechanism 32 may include a Hall sensor, which is connected to the lead screw nut 352 , and the movement of the lead screw nut 352 is controlled by the Hall sensor 352 , thereby controlling the stroke of the electric pruning shears.

[0088] The above-mentioned specific method and process of using the Hall sensor to control the movement of the screw nut are the same as the process and method of using the Hall sensor to control the control stroke in the prior art. Those skilled in the art may refer to the existing process and method of using the Hall sensor to control the control stroke, and the embodiments of the present invention will not be repeated here.

[0089] In addition, if Figure 1 、 Figure 2 and Figure 3 As shown, in the above two embodiments provided by the present invention, features that enhance visibility are provided for the blade assembly so that the user can clearly distinguish the relative position of the blade and the plant to be pruned when in use. In some embodiments, the features that enhance visibility include various features that make the blade easier to be observed by the user, such as self-luminous features, high-reflective features, fluorescent features, bright color features, pattern features, etc. The features that enhance visibility can be provided to the blade assembly in various different ways. For example, as shown in the figure, in some embodiments, an additional material coating can be applied to the blade assembly. Preferably, the material coating is provided on the outer surface of at least one blade in the blade assembly. Further preferably, the material coating is provided on the outer surface of the lower blade 37 in the blade assembly. In some embodiments, an additional visibility-enhancing component can be provided for the blade assembly, which is attached to one of the blades in the blade assembly. The visibility-enhancing component has the above-mentioned visibility-enhancing features.

[0090] Furthermore, in both of the above-mentioned embodiments of the present invention, the power mechanism 33 can include a DC motor 331 and a planetary gear reducer 332. The input end of the planetary gear reducer 332 is connected to the output end of the DC motor 331, and the output end of the planetary gear reducer 332 is connected to the transmission mechanism. Specifically, the output end of the planetary gear reducer 332 is connected to the worm 341, or the output end of the planetary gear reducer 332 is connected to the lead screw 351. The power output of the DC motor 331 is reduced by the planetary gear reducer 332 and then transmitted to the worm gear transmission structure 34 or the ball screw transmission mechanism 35.

[0091] Optionally, a power supply device for supplying power to the DC motor 331 is provided in the handle 1. The DC motor 331 may be a brushless DC motor or a brushed DC motor with lower cost, which is not limited in the embodiment of the present invention.

[0092] Alternatively, as Figure 12 As shown, the connecting rod 2 can be a telescopic connecting rod.

[0093] For example, in one embodiment, Figure 12 As shown, the connecting rod 2 may include an inner tube 21, an outer tube 22, and a locking device 23 sleeved on the outer tube 22. The locking device 23 includes a base 231, a first locking sleeve 232 fixedly sleeved on the outer tube 22, a second locking sleeve 233 slidably sleeved on the inner tube 21, and a locking wrench 234 mounted on the first locking sleeve 232 and the second locking sleeve 233. For example, when a user rotates the locking wrench 234 from a locked position, where it abuts against the first locking sleeve 232 and the second locking sleeve 233, to a released position, the pressure of the first locking sleeve 232 on the outer tube 22 is reduced, allowing the inner tube 21 to slide freely. The user can then pull out or push the inner tube 21 a certain distance as needed, and then rotate the locking wrench 234 from the released position to the locked position to adjust the length of the connecting rod 2.

[0094] For example, in another embodiment, the connecting rod 2 may include an inner tube, an outer tube, and a sleeve connecting the inner and outer tubes. The sleeve and outer tube inner surfaces, as well as the outer surface of the outer tube and sleeve connecting end, are provided with mating threads. After the user loosens the sleeve, they can freely slide the inner tube within the outer tube, pulling or pushing the inner tube a certain distance as needed, and then tighten the sleeve to adjust the length of the connecting rod 2.

[0095] Of course, those skilled in the art may also make settings with reference to telescopic rods in the prior art, and the embodiments of the present invention are not limited thereto.

[0096] Alternatively, as Figure 13 As shown, the trimming component 3 is rotatably connected to the connecting rod 2 .

[0097] Further optionally, as Figure 13 As shown, the trimming member 3 is rotatably connected to the connecting rod 2 via a rotating button 6. Specifically, the rotating button is a T-shaped button, and a boss 62 is provided along the side of the upper end 61 of the T-shaped button. A plurality of protrusions 63 are evenly arranged on the boss 62. The inner side surface of the connecting rod 2 connected to the upper end 61 of the T-shaped button is provided with a plurality of grooves that cooperate with the protrusions 63. The housing 31 is provided with a mounting base 312 with a groove that cooperates with the lower end 64 of the T-shaped button.

[0098] For example, when the trimming component 3 needs to be rotated, the user presses the rotating button 6, and the protrusion 63 of the upper end 61 of the rotating button 6 will disengage from the groove on the inner side surface where the connecting rod 2 is connected to the upper end 61 of the T-shaped button. At the same time, the lower end 64 remains engaged with the mounting platform 312. The rotating button 6 is relatively fixed to the trimming component 3 and is relatively movable to the connecting rod 2, thereby realizing the rotation of the trimming component 3.

[0099] In addition, if Figure 13 As shown, the T-shaped button further includes a spring 65 that passes through the lower end 64 and is mounted between the inner side of the upper end 61 and the mounting base 312. When the trimming member 3 is rotated to a desired angle, the T-shaped button can be released, and the spring 65 automatically pops up the T-shaped button, causing the protrusion 63 to engage with the groove on the inner side of the connecting rod 2 connecting to the upper end 61 of the T-shaped button, thereby locking the current angle of the trimming member 3.

[0100] Other embodiments of the present invention will readily occur to those skilled in the art after considering the specification and practicing the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the present invention that follow the general principles of the invention and include undisclosed common knowledge or customary techniques in the art. The description and examples are to be considered as exemplary only, with the true scope and spirit of the invention being indicated by the claims.

[0101] It should be understood that the present invention is not limited to the embodiments, methods, and structures described above, and the precise structures shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present invention is limited only by the appended claims.

Claims

1. An electric pruning shear, characterized in that: The invention comprises a handle (1), a connecting rod (2) and a trimming component (3) connected in sequence, wherein the trimming component (3) comprises a housing (31), a control mechanism (32), a power mechanism (33) connected in sequence, a transmission mechanism and a blade assembly, wherein the power mechanism (33) and the transmission mechanism are arranged in the housing (31), the blade assembly is arranged at an end of the housing (31) away from the power mechanism (33), the handle (1) is provided with a switch (4) connected to the power mechanism (33), and the control mechanism (32) is connected to the transmission mechanism; The transmission mechanism is a worm gear transmission mechanism (34) or a ball screw transmission mechanism (35); The blade assembly comprises an upper blade (36) and a lower blade (37), wherein the upper blade and the lower blade are connected via a threaded connection (38), wherein the threaded connection (38) is a step-type connection, comprising a cylindrical threaded end (381), a cylindrical middle section (382), a square prism (383), and a cuboid end (384) connected in sequence. wherein the cylindrical threaded end (381) is coaxially arranged with the cylindrical middle section (382), and the diameter of the cylindrical threaded end (381) is smaller than the diameter of the cylindrical middle section (382), the center of the cross section of the cylindrical middle section (382), the center point of the square cross section of the square prism (383) and the center point of the cuboid end (384) all coincide with each other, and the area of ​​the cross section of the cylindrical middle section (382) is smaller than the area of ​​the square cross section of the square prism (383), and the area of ​​the square cross section of the square prism (383) is smaller than the area of ​​a surface of the cuboid end (384) connected to the square prism (383); The upper blade (36) comprises a toothed tail portion (361) and an upper blade head (362) connected to each other, wherein the toothed tail portion (361) and the upper blade head (362) are provided with a circular through hole that matches the cylindrical middle section (382), the lower blade (37) and the housing (31) are provided with a square through hole that matches the square prism (383), the housing (31) is provided with a rectangular recess that matches the end portion (384) of the cuboid, and the square through hole on the housing (31) is arranged in the rectangular recess; Wherein, starting from the rectangular parallelepiped end (384), the stepped connecting piece sequentially passes through the housing (31), the lower blade (37), the upper cutter head (362) and the toothed tail (361), and the cylindrical threaded end (381) passes through the toothed tail (361) and is connected to the nut.

2. The electric pruning shears according to claim 1, characterized in that The blade set includes at least one blade, and the at least one blade is made of at least two different materials; the at least one blade includes a connecting portion made of a first material and a shearing portion made of a second material, and the connecting portion is connected to the transmission mechanism and the shearing portion; the hardness of the first material is less than the hardness of the second material.

3. The electric pruning shears according to claim 1, characterized in that The worm (341) in the worm gear transmission mechanism (34) is connected to the power mechanism (33); the worm wheel (342) in the worm gear transmission mechanism (34) is provided with a pinion (343) that is coaxially driven with the worm wheel (342); the pinion (343) is engaged with the upper blade (36) in the blade assembly; and the lower blade (37) in the blade assembly is connected to the upper blade (36) and fixed to the housing (31).

4. The electric pruning shears according to claim 3, characterized in that The hardness of the toothed tail portion (361) is less than the hardness of the upper cutter head (362).

5. The electric pruning shears according to claim 3, characterized in that: The control mechanism (32) includes a fixing pin (321) provided on the worm gear (342), a steering switch (322) and a stop switch (323) installed on the housing. The fixing pin (321) touches the steering switch (322) as the worm gear (342) rotates, and the worm gear (342) rotates in the opposite direction. The worm gear (342) rotates in the opposite direction and touches the stop switch (323), and the worm gear (342) stops rotating.

6. The electric pruning shears according to claim 1, characterized in that: The power mechanism (33) includes a DC motor (331) and a planetary gear reducer (332), wherein the input end of the planetary gear reducer (332) is connected to the output end of the DC motor (331), and the output end of the planetary gear reducer (332) is connected to the transmission mechanism.

7. The electric pruning shears according to claim 6, characterized in that: A power supply device for supplying power to the DC motor (331) is provided in the handle (1).

8. The electric pruning shears according to claim 1, characterized in that: The connecting rod (2) is a telescopic connecting rod.

9. The electric pruning shears according to claim 1, characterized in that: The trimming component (3) is rotatably connected to the connecting rod (2).

10. The electric pruning shears according to claim 9, characterized in that: The trimming component (3) is rotatably connected to the connecting rod (2) via a rotating button (6). The rotating button (6) is a T-shaped button. A boss (62) is provided along the side surface of the upper end portion (61) of the T-shaped button. A plurality of protrusions (63) are evenly provided on the boss (62). The inner side surface of the connecting rod (2) connected to the upper end portion (61) is provided with a plurality of grooves matching the protrusions (63). The housing (31) is provided with a mounting platform (312) having a groove matching the lower end portion (64) of the T-shaped button.

11. The electric pruning shears according to claim 10, characterized in that: The T-shaped button further includes a spring (65) passing through the lower end portion (64) and installed between the inner side surface of the upper end portion (61) and the mounting platform (312).

12. The electric pruning shears according to claim 1, characterized in that The blade set includes features to enhance visibility.

13. The electric pruning shears according to claim 12, characterized in that: The enhancement feature is selected from at least one of a self-luminous feature, a high-reflective feature, a fluorescent feature, a bright color feature, and a pattern feature.

14. The electric pruning shears according to claim 12, characterized in that: The reinforcement is provided on an outer side surface of at least one blade in the blade assembly.

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