CN210537595U

CN210537595U - Novel electronic secateurs in gardens

Info

Publication number: CN210537595U
Application number: CN201920921070.9U
Authority: CN
Inventors: 李清林
Original assignee: Nanyang Libo Precision Drive Co ltd
Current assignee: Nanyang Libo Precision Drive Co ltd
Priority date: 2019-06-19
Filing date: 2019-06-19
Publication date: 2020-05-19
Anticipated expiration: 2029-06-19

Abstract

The utility model discloses a novel electronic branch in gardens is cut, including shell, input pencil, motor, planetary gear assembly, bearing assembly, ball screw subassembly, tool bit subassembly, switch spare, its characterized in that detains the trigger, and the input pencil is the current input motor, and the motor rotation drives planetary gear and rotates, and planet revolving rack output torque to ball screw promotes ball nut linear motion, drives the push rod and moves the blade removal, realizes that the scissors opens and shuts. 4 planetary gears are adopted, so that the strength of the gears is improved; the separating structure of the ball screw and the planet rotating frame and the scheme that the bearing assembly is not in direct contact with the ball screw enable the structure to be simple, the assembly to be simplified and the cost to be obviously reduced. The shape of the cutter head part is optimized, and the cutter head part has larger opening and closing size under the same moving distance of the screw rod, so that large branches can be conveniently cut. The utility model discloses intensity is good, with low costs, the assembly is simplified, the shearing size is big, is worth promoting and applying.

Description

Novel electronic secateurs in gardens

Technical Field

The utility model relates to an electronic secateurs, in particular to electronic gardens secateurs who contains planetary gear transmission and ball screw.

Background

The large-diameter garden electric pruning shear is suitable for shearing branches with the diameter of 25-50 mm, saves labor compared with manual pruning, and has high efficiency and good shearing section. However, the existing pruning shears have the following problems: 1) the gearbox has low strength and short service life; 2) the ball screw has a complex structure, is difficult to manufacture and has high cost. 3) The opening of the shearing blade is small in size and the shearing diameter is small; 4) the arrangement of the thrust bearing group is complex and the assembly is difficult; these factors make the existing pruning shears high in cost and limited in mass popularization, and therefore, the existing technology needs to be improved.

Disclosure of Invention

The utility model relates to a novel electronic branch of gardens is cut, gear drive intensity is good, ball screw simple structure, and it is big to cut the opening size, and the pruning diameter is big, and thrust bearing makes up simple easy assembly, and is with low costs, has solved the defect among the above-mentioned background art.

In order to achieve the above purpose, the utility model adopts the following technical scheme.

A novel garden electric pruning shear comprises a shell, an input wire harness, a motor, a planetary gear assembly, a bearing assembly, a ball screw assembly, a cutter head assembly and a switch piece.

The shell consists of an upper shell and a lower shell; the input wiring harness extends into the shell from a wiring harness inlet at the lower end of the shell and is connected with the motor; the motor is connected with the planetary gear assembly; a bearing assembly is arranged between the planetary gear assembly and the ball screw assembly; the ball screw assembly is connected with the tool bit assembly; the switch piece is positioned in a switch groove of the fixing frame of the cutter head component; the switch piece is connected with the input wiring harness through a connecting wire; during installation, the push rod grooves of the motor, the planetary gear assembly, the bearing assembly, the ball screw assembly and the tool bit assembly are all located in the shell, the fixed blade and the movable blade of the tool bit assembly are located outside the shell, the switch groove is located in the neutral position of the handle of the shell, and the trigger of the switch piece extends out of the neutral position of the handle of the shell from the switch groove.

As a preferable scheme, a handle ring is arranged at the upper end of the shell, the shell wall in the handle is a neutral position, and a wiring harness inlet is arranged at the lower end of the shell; the input wire harness, the motor, the planetary gear assembly, the bearing assembly, the ball screw assembly, the tool bit assembly and the switch assembly are combined into a whole by the shell, and the shell is convenient to hold and operate.

Preferably, the planetary gear assembly comprises a sun gear, an internal gear, a threaded sleeve, a flat head screw, a gasket, a planet wheel and a planet rotating frame; the sun gear is arranged on a motor shaft; the internal gear is positioned in the screw sleeve; 4 planet wheels are sleeved on 4 rotating frame shafts of the planet rotating frame respectively; the flat head screw penetrates through the threaded sleeve, the internal gear, the gasket and the planetary rotating frame to connect the threaded sleeve, the internal gear, the gasket and the planetary rotating frame into a whole; the sun gear extends into the inner gear to prop against the flat head screw.

As a preferred scheme, the bearing assembly comprises a first thrust needle bearing, a gasket, a deep groove ball bearing, a fixed sleeve, a second thrust needle bearing and a connecting sleeve; the first thrust needle bearing and the deep groove ball bearing are positioned in the fixed sleeve, and a gasket is arranged between the first thrust needle bearing and the deep groove ball bearing; the second thrust needle bearing is located on the other side of the fixed sleeve, and the connecting sleeve is located on the other side of the second thrust needle bearing.

Preferably, the ball screw assembly comprises a ball screw, a ball nut, a guide sleeve and a magnet; one end of the ball screw is connected with a ball nut, a guide sleeve is arranged on the ball nut, and the magnet is arranged on the guide sleeve; the flat head screw extends out of the planetary rotating frame, penetrates through the bearing assembly and extends into the screw rod at the other end of the ball screw.

As a preferred scheme, the cutter head component comprises a fixed frame, a push rod, a movable blade, a fixed blade, a pin shaft and a locking screw; the fixed frame is provided with a push rod groove, a blade fixed table and a switch groove; one end of the push rod is positioned in the push rod groove and connected with the ball nut, and the other end of the push rod is positioned outside the push rod groove and movably connected with the movable blade through a clamp spring and a screw; the fixed blade is fixed on the blade fixing table through a screw; the shaft pin penetrates through the movable blade and the fixed blade to connect the movable blade and the fixed blade, and the back of the fixed blade is provided with a locking nut for locking; the switch groove is positioned on one side below the blade fixing table.

As a preferred scheme, the switch piece comprises a trigger, a switch pcb, a gasket and a connecting wire; the switch pcb is positioned behind the trigger, and the gasket is positioned behind the switch pcb and is fixed by a screw; the switch pcb is provided with a Hall element which can sense a position signal and is connected with the input wiring harness through a connecting wire.

The utility model has the effects that: the trigger is pulled, the input wire harness inputs current into the motor, the motor rotates to drive the planetary gear to rotate, the planetary rotating frame outputs torque to the ball screw, the ball screw pushes the ball nut to move linearly, the push rod and the movable blade are driven to move, and opening and closing of the scissors are achieved. 4 planetary gears are adopted, so that the strength of the gears is improved; the separating structure of the ball screw and the planet rotating frame and the scheme that the bearing assembly is not in direct contact with the ball screw enable the structure to be simple, the assembly to be simplified and the cost to be obviously reduced. The shape of the cutter head part is optimized, and the cutter head part has larger opening and closing size under the same moving distance of the screw rod, so that large branches can be conveniently cut. The utility model discloses intensity is good, with low costs, the assembly is simplified, the shearing size is big, is worth promoting and applying.

[ description of the drawings ]

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is an exploded view of the present invention;

FIG. 3 is a schematic view of the internal structure of the present invention;

FIG. 4 is a schematic view of the connection section of the planetary gear assembly, the bearing assembly and the ball screw assembly according to the present invention;

fig. 5 is a schematic view of the structure of the tool bit assembly of the present invention.

Wherein: a-shell, A1-upper shell, A2-lower shell, A3-handle, A4-harness inlet, B-input harness, C-motor, D-planetary gear assembly, D1-sun gear, D2-internal gear, D3-thread sleeve, D4-flat head screw, D5-planet wheel, D6-planet rotating frame, rotating frame shaft D61, E-bearing assembly, E1-thrust needle bearing I, E2-deep groove ball bearing, E3-fixed sleeve, E4-thrust needle bearing II, E5-connecting sleeve, F-ball screw assembly, F1-ball screw, F2-ball nut, F3 guide sleeve, F4-magnet, G-cutter head assembly, G1-fixed frame, G11-push rod groove, G12-fixed blade platform, G13-switch groove, G2-push rod, G3-O ring G4-movable blade, G5-fixed blade, snap spring G6, pin shaft G7, locking screw G8, H-switch piece, H1-trigger, H2-switch pcb, H3-connecting line, I-gasket and J-screw.

[ detailed description ] embodiments

Reference will now be made in detail to the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout, and which are illustrated in the following description with reference to the accompanying drawings and are intended to be used for explaining the present invention and are not to be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrated: either mechanically or electrically: can be directly connected or indirectly connected through an intermediate medium, can be communication inside two elements or interaction relationship between two elements, and can be understood by those skilled in the art according to the specific situation

Referring to fig. 1-5, a novel garden electric pruning shear comprises a shell a, an input wire harness B, a motor C, a planetary gear assembly D, a bearing assembly E, a ball screw assembly F, a cutter head assembly G and a switch member H.

The shell A consists of an upper shell A1 and a lower shell A2; the input wiring harness B extends into the shell A from a wiring harness inlet A4 at the lower end of the shell A and is connected with the motor C; the motor C is connected with the planetary gear assembly D; a bearing assembly E is arranged between the planetary gear assembly C and the ball screw assembly F; the ball screw assembly F is connected with the tool bit assembly G; the switch piece H is positioned in a switch groove G13 of a fixing frame G1 of the cutter head assembly G; a connecting wire H3 is arranged between the switch piece H and the input wiring harness B for connection; when the tool bit is installed, the motor C, the planetary gear assembly D, the bearing assembly E, the ball screw assembly F and the push rod groove G11 of the tool bit assembly G are all located in the shell A, the movable blade G4 and the fixed blade G5 of the tool bit assembly G are located outside the shell A, the switch groove G13 is located in the neutral position of the handle A3 of the shell A, and the trigger H1 of the switch piece H extends out of the neutral position of the handle A3 of the shell A from the switch groove G13 on one side of the push rod groove G11.

As a preferable scheme, the upper end of the shell A is provided with a handle A3, the shell wall in the handle A3 is a neutral gear, the lower end of the shell A is provided with a wiring harness inlet A4, the shell A integrates an input wiring harness B, a motor C, a planetary gear assembly D, a bearing assembly E, a ball screw assembly F, a cutter head assembly G and a switch piece H to facilitate hand holding and operation, and the input wiring harness extends from the wiring harness inlet, inputs a power supply and signals and is connected with the motor.

Preferably, the planetary gear assembly D comprises a sun gear D1, an internal gear D2, a threaded sleeve D3, a flat head screw D4, a gasket I, a planetary gear D5 and a planetary rotating frame D6; the sun gear D1 is arranged on a motor shaft; the internal gear D2 is positioned in the screw sleeve D3; 4 planet wheels D5 are respectively sleeved on 4 rotating frame shafts D61 of the planet rotating frame D6; the grub screw D4 passes through the screw sleeve D3, the internal gear D2, the gasket I and the planet rotating frame D6 to connect the screw sleeve D3, the internal gear D2, the gasket I and the planet rotating frame D6 into a whole; the sun gear D1 extends into the ring gear D2 and bears against grub screw D4.

Preferably, the bearing assembly E comprises a first thrust needle bearing E1, a gasket I, a deep groove ball bearing E2, a fixed sleeve E3, a second thrust needle bearing E4 and a connecting sleeve E5; the first thrust needle bearing E1 and the deep groove ball bearing E2 are positioned in the fixed sleeve E3, and a gasket I is arranged between the first thrust needle bearing E1 and the deep groove ball bearing E2; the second thrust needle bearing E4 is positioned on the other side of the fixed sleeve E3, and the connecting sleeve E5 is positioned on the other side of the second thrust needle bearing E4.

Preferably, the ball screw assembly F comprises a ball screw F1, a ball nut F2, a guide sleeve F3 and a magnet F4; one end of the ball screw F1 is connected with a ball nut F2, a guide sleeve F3 is arranged on the ball nut F2, and the magnet F4 is arranged on a guide sleeve F3; the grub screw D4 extends from the planet carrier D6, through the bearing assembly E and into the screw at the other end of the ball screw F1.

Preferably, the cutter head assembly G comprises a fixed frame G1, a push rod G2, an O ring G3, a movable blade G4, a fixed blade G5, a clamp spring G6, a pin shaft G7 and a locking screw G8; the fixing frame G1 is provided with a push rod groove G11, a blade fixing table G12 and a switch groove G13; one end of the push rod G2 is positioned in the push rod groove G11 and connected with the ball nut F2, and the other end of the push rod G2 is positioned outside the push rod groove G11 and connected with the movable blade G5 through a snap spring G6 and a screw J; the fixed blade G5 is fixed on the blade fixing table G12 through a screw J; the shaft pin G7 penetrates through the movable blade G4 and the fixed blade G5 to connect the movable blade G4 and the fixed blade G5, and the back of the fixed blade G5 is provided with a locking nut G8 for locking; the switch groove G13 is located on one side of the push rod groove G11 below the blade holder G12.

Preferably, the switch piece H comprises a trigger H1, a switch pcb H2, a gasket I and a connecting wire H3; the switch pcb H2 is positioned behind a trigger H1, and a gasket I is positioned behind the switch pcb H2 and is fixed by a screw J; the switch pcb H2 is provided with a Hall element (not shown in the figure) capable of sensing a position signal, and is connected with the input wiring harness B through a connecting wire H3.

The utility model discloses during the installation:

specifically, the method comprises the following steps: the input wire harness, the motor, the planetary gear assembly, the bearing assembly, the ball screw assembly and the cutter head assembly are combined into a whole by the shell, so that the input wire harness, the motor, the planetary gear assembly, the bearing assembly, the ball screw assembly and the cutter head assembly are convenient to hold and operate; the planetary gear assembly is in single-stage planetary gear transmission, 4 planetary gears are arranged, the output rotating frame is directly contacted with the thrust needle roller bearing, the output end is directly connected with the ball screw through a connecting sleeve and a flat head screw, and the torque is transmitted to the ball screw; the ball screw assembly is composed of a ball screw and a ball nut, a guide sleeve is fixed outside the ball nut, a magnet mounting position is arranged on the guide sleeve, the guide sleeve is of a split structure, and the guide sleeve slides in a push rod groove of the fixing frame. One end of the ball nut is a spherical surface and is connected with the push rod through a screw; a group of bearing assemblies are arranged between the planetary gear assembly and the ball screw assembly and consist of two thrust needle bearings and a deep groove ball bearing, so that the radial support of the ball screw and the planetary gear transmission part is realized, and the axial force of the ball screw is borne; the fixed blade is fixed on the fixed frame, the movable blade is connected with the push rod, and the push rod moves up and down to enable the movable blade to swing so as to realize shearing action; set up the switch spare on the mount, the switch spare is connected with the input pencil, presses the trigger of switch spare, and the input pencil is the current input motor, and the motor rotation drives planetary gear and rotates, and planetary turret output torque to ball screw, ball screw promote ball nut linear motion, drive push rod and moving blade removal, make the moving blade around the round pin axle rotation, realize that the cutting edge opens and shuts, accomplish pruning work.

The utility model provides a direct current brushless motor, ordinary direct current motor can use equally, and convenient to use is simple.

The utility model has the advantages of simple integral structure, the assembly is simplified, and working strength is good, and is with low costs, and the shearing size is big, is worth promoting and using.

The above only is the preferred embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structures or equivalent flow changes made by the contents of the specification and the drawings, or directly or indirectly applied to other related technical fields, are included in the same way in the protection scope of the present invention.

Claims

1. The utility model provides a novel electronic branch in gardens is cut, includes shell, input pencil, motor, planetary gear assembly, bearing assembly, ball screw subassembly, tool bit subassembly, switch spare, its characterized in that:

2. The novel garden electric pruning shear according to claim 1, characterized in that: the upper end of the shell is provided with a handle ring, the wall of the shell in the handle is a neutral gear, and the lower end of the shell is provided with a wire harness inlet; the input wire harness, the motor, the planetary gear assembly, the bearing assembly, the ball screw assembly, the tool bit assembly and the switch assembly are combined into a whole by the shell, and the shell is convenient to hold and operate.

3. The novel garden electric pruning shear according to claim 1, characterized in that: the planetary gear assembly comprises a sun gear, an internal gear, a threaded sleeve, a flat head screw, a gasket, a planet wheel and a planet rotating frame; the sun gear is arranged on a motor shaft; the internal gear is positioned in the screw sleeve; 4 planet wheels are sleeved on 4 rotating frame shafts of the planet rotating frame respectively; the flat head screw penetrates through the threaded sleeve, the internal gear, the gasket and the planetary rotating frame to connect the threaded sleeve, the internal gear, the gasket and the planetary rotating frame into a whole; the sun gear extends into the inner gear to prop against the flat head screw.

4. The novel garden electric pruning shear according to claim 1, characterized in that: the bearing assembly comprises a first thrust needle bearing, a gasket, a deep groove ball bearing, a fixed sleeve, a second thrust needle bearing and a connecting sleeve; the first thrust needle bearing and the deep groove ball bearing are positioned in the fixed sleeve, and a gasket is arranged between the first thrust needle bearing and the deep groove ball bearing; the second thrust needle bearing is located on the other side of the fixed sleeve, and the connecting sleeve is located on the other side of the second thrust needle bearing.

5. The novel garden electric pruning shear according to claim 1, characterized in that: the ball screw assembly comprises a ball screw, a ball nut, a guide sleeve and a magnet; one end of the ball screw is connected with a ball nut, a guide sleeve is arranged on the ball nut, and the magnet is arranged on the guide sleeve; a grub screw of the planetary gear assembly extends out of the planetary rotating frame, passes through the bearing assembly and extends into a screw rod at the other end of the ball screw.

6. The novel garden electric pruning shear according to claim 1, characterized in that: the cutter head component comprises a fixed frame, a push rod, a movable blade, a fixed blade, a shaft pin and a locking screw; the fixed frame is provided with a push rod groove, a blade fixed table and a switch groove; one end of the push rod is positioned in the push rod groove and connected with the ball nut, and the other end of the push rod is positioned outside the push rod groove and movably connected with the movable blade through a clamp spring and a screw; the fixed blade is fixed on the blade fixing table through a screw; the shaft pin penetrates through the movable blade and the fixed blade to connect the movable blade and the fixed blade, and the back of the fixed blade is provided with a locking nut for locking; the switch groove is positioned on one side below the blade fixing table.

7. The novel garden electric pruning shear according to claim 1, characterized in that: the switch piece comprises a trigger, a switch pcb, a gasket and a connecting wire; the switch pcb is positioned behind the trigger, and the gasket is positioned behind the switch pcb and is fixed by a screw; the switch pcb is provided with a Hall element which can sense a position signal and is connected with the input wiring harness through a connecting wire.