CN211185052U

CN211185052U - Electric pruning shear

Info

Publication number: CN211185052U
Application number: CN201922176528.5U
Authority: CN
Inventors: 陈天伦; 舒采全
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-12-06
Filing date: 2019-12-06
Publication date: 2020-08-07
Anticipated expiration: 2029-12-06

Abstract

The utility model discloses an electric pruning shear, which comprises a battery, a circuit board, a transmission mechanism connected with the circuit board, a scissors assembly and a shell, wherein the transmission mechanism comprises a motor, a speed reducer, a bevel gear and a connecting part; the scissors assembly comprises a movable scissors, a sector gear assembly, a static scissors and a friction plate, wherein the sector gear assembly comprises a tooth part, a mounting hole and a fixing hole; the shell comprises a first section body, a second section body and a third section body, a frame-shaped handle is connected between the second section body and the third section body, and a control handle positioned in the frame-shaped handle is connected with the friction plate and used for driving the friction plate to abut against or separate from the movable scissors; and a mounting panel connected with the circuit board is obliquely mounted above the connecting part, and a touch unlocking part and a key on the mounting panel extend out of the third section body. The utility model has the advantages of reasonable design, it is more convenient, laborsaving to operate, and the design of touch unlocking part has improved the security performance of electric pruning sword, effectively avoids the spurious triggering.

Description

Electric pruning shear

Technical Field

The utility model belongs to the technical field of electric tool, especially, relate to an electric pruning shear.

Background

The tree pruning machine has the advantages that the tree pruning machine is time-consuming and labor-consuming in pruning branches by the aid of traditional scissors, operators use physical power for a long time to consume a large amount, pruning efficiency is low, and requirements cannot be met. Aiming at the problems, an electric pruning knife is developed, the static scissors and the movable scissors are automatically driven to prune through a motor and a transmission device, the static scissors are kept relatively still, and the movable scissors swing back and forth relative to the static scissors, so that the pruning of the branches by two scissors blades is realized. However, the existing electric pruning shear is unreasonable in structural design, inconvenient to hold and operate, easy to trigger and start by mistake and low in safety performance.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the utility model provides an electric pruning shear with high safety performance, reasonable structural design and convenient operation.

The utility model provides a technical scheme that its technical problem adopted is: an electric pruning shear comprises a battery, a circuit board, a transmission mechanism connected with the circuit board, a scissors assembly and a shell, wherein the transmission mechanism comprises a motor, a speed reducer connected with the motor, a bevel gear connected with the speed reducer and a connecting part positioned at the front end of the bevel gear; the scissors assembly comprises a movable scissors rotationally connected with the connecting part, a sector-shaped tooth assembly connected with the movable scissors, a static scissors matched with the movable scissors and a friction plate, wherein the sector-shaped tooth assembly comprises a tooth part which can be in matched connection with the bevel gear, a mounting hole rotationally connected with the movable scissors and a fixing hole which is positioned on the other side of the mounting hole and can be fixedly connected with the movable scissors; the shell comprises a first section body connected with the battery, a second section body wrapped outside the transmission mechanism and a third section body for the movable scissors and the static scissors to extend out, a frame-shaped handle is connected between the second section body and the third section body, and an operating handle positioned in the frame-shaped handle is connected with the friction plate and is used for driving the friction plate to abut against or separate from the movable scissors; and a mounting panel connected with the circuit board is obliquely mounted above the connecting part, and a touch unlocking part and a key on the mounting panel extend out of the third section body.

The utility model divides the shell into a first section connected with the battery, a second section and a third section which are coated outside the transmission mechanism, the assembly is simpler, the layout is reasonable, and the whole volume can not be overlarge; the battery with relatively large overall weight is arranged at the tail end of the electric pruning shear, and the frame-shaped handle is connected between the second section body and the third section body, so that the frame-shaped handle is convenient to hold by hands, and the position of the frame-shaped handle is reasonably designed, so that the operation is more convenient and labor-saving; through the design of the friction plate, the emergency stop of the movable scissors can be realized so as to deal with the emergency; the design of touch unlocking part on the installation panel realizes the function of touch unlocking, avoids the electric pruning cutter from being triggered by mistake, has higher safety performance, and installs the installation panel in the top of connecting portion in an inclined manner, and the position is reasonable in design and more convenient to control.

Furthermore, a limiting column which can be abutted against the friction plate is formed in the third section. The limiting column can prevent the friction plate from rotating in a transition mode, and meanwhile the friction plate is matched to provide larger friction force.

Furthermore, the friction disc is fan-shaped, a first arc-shaped notch which can be abutted against the movable scissors is formed in the inner ring of the friction disc, a second arc-shaped notch which can be abutted against the limiting column is formed in the two ends of the friction disc, and the control handle is rotatably connected to the end portion of the friction disc.

Furthermore, the front end of the connecting part is provided with a connecting hole, and the movable scissors and the static scissors are rotatably connected to the connecting hole.

Furthermore, be connected with angle adjusting part on the quiet scissors, it includes the first gear with connecting hole coaxial coupling, connects the adjusting shim between first gear and quiet scissors, sets up the stroke groove of adjusting shim, can with the second gear of first gear meshing, and pass the stroke groove and support the fastener that presses the adjusting shim with the second gear, adjusting shim and first gear spline fit connection, first gear and quiet scissors spline fit connection. The angle adjusting assembly can adjust the relative angle of the static scissors so as to adjust the opening angle between the static scissors and the movable scissors, can adapt to target cutting objects with different volumes, and the maximum opening angle is limited by the stroke groove.

Furthermore, the section of the third section body is in an arch shape, the installation panel is obliquely arranged on the inclined surface of the arch structure close to one side of the second section body, and the frame-shaped handle is arranged opposite to the installation panel. The installation panel is installed in an inclined mode, the installation position of the installation panel corresponds to the frame-shaped handle, the structural design is reasonable, and the operation is more convenient.

The utility model has the advantages that: structural design is reasonable, and the operation is more convenient, laborsaving, and assembly structure reasonable in design has simplified the assembly step, has designed the friction disc and can carry out mechanical scram operation to moving the scissors in emergency, and the design of touch unlocking part has improved the security performance of electronic pruning sword, effectively avoids the spurious triggering, and its mounted position accords with user's operation custom, and it is more convenient to operate.

Drawings

Fig. 1 is a schematic perspective view of the present invention.

Fig. 2 is a schematic diagram of the partially-disassembled structure of the present invention.

Fig. 3 is a schematic view of a part of the structure of the transmission mechanism of the present invention.

Fig. 4 is a schematic structural diagram of the friction plate of the present invention.

Fig. 5 is a schematic structural diagram of the utility model with a half cut away from the shell.

Fig. 6 is an exploded schematic view of the present invention.

Detailed Description

In order to make the technical solution of the present invention better understood, the following figures in the embodiments of the present invention are combined to clearly and completely describe the technical solution in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall belong to the protection scope of the present invention.

As shown in fig. 1-6, an electric trimmer includes a battery 1 at the rear end, a circuit board 2 connected to the battery 1, a transmission mechanism connected to the circuit board 2, a scissor assembly, and a housing 3.

The transmission mechanism comprises a motor 41, a speed reducer 42, a bevel gear 43 and a connecting part 44 which are connected in sequence, the connecting part 44 is positioned right ahead of the bevel gear 43 (defining one end of the scissors assembly as the front), a circular connecting hole 441 is formed in the front end of the connecting part 44, and the bevel gear 43 is matched with the scissors assembly.

The scissors assembly comprises a movable scissors 51 and a static scissors 52 which are rotatably connected to a connecting hole 441, a sector-shaped tooth assembly connected with the movable scissors 51 and a friction plate 53, wherein the cutting edges of the movable scissors 51 and the static scissors 52 are opposite to each other and are used for matching and trimming, the sector-shaped tooth assembly comprises a tooth portion 541 which can be meshed with the bevel gear 43, a mounting hole 542 which is opposite to the connecting hole 441, and a fixing hole 543 which is positioned on the other side of the mounting hole 542 and can be fixedly connected with the movable scissors 51, and a connecting shaft 55 penetrates through the mounting hole 542, the movable scissors 51, the static scissors 52 and the connecting hole 441 to rotatably connect the sector-shaped tooth assembly, the movable scissors 51 and the. The tooth portion 541 is meshed with the bevel gear 43, and under the driving of the bevel gear 43, the tooth portion 541 can swing circumferentially with the point of the connecting shaft 55 as a fulcrum to drive the movable scissors 51 to swing to cooperate with the static scissors 52 to achieve the purpose of cutting.

The static scissors 52 are connected with the connecting part 44 through the adaptor 56, the static scissors 52 are connected to one side of the adaptor 56, in order to realize the angle adjustment of the static scissors 52, an angle adjustment assembly is connected to the other side of the adaptor 56, and comprises a first gear 71 coaxially connected with the connecting hole 441, an adjustment gasket 72 connected between the first gear 71 and the side surface of the adaptor 56, a stroke groove 73 formed on the adjustment gasket 72, a second gear 74 capable of being meshed with the first gear 71, and a fastener 75, wherein the fastener 75 penetrates through the stroke groove 73 and the adaptor 56 to press the second gear 74 against the side wall of the adjustment gasket 72, the adjustment gasket 72 is in rotation-stop fit connection with the first gear 71, and the first gear 71 is in rotation-stop fit connection with the static scissors 52. When the angle of the static scissors 52 needs to be adjusted, the elastic adjusting fastener 75 is rotated, so that the second gear 74 can rotate relatively to drive the first gear 71 to rotate, and therefore the static scissors 52 are driven to rotate synchronously to adjust the opening angle of the static scissors, meanwhile, as the adjusting gasket 72 also rotates synchronously, the stroke groove 73 and the fastener 75 are matched to limit the rotating angle of the adjusting gasket 72, and further the rotating angle of the second gear 74 is limited, namely the maximum opening angle of the static scissors 52 is limited. When the target opening angle is reached, the fastener 75 is retightened, preventing the first gear 71 and the second gear 74 from rotating.

The shell 3 comprises a first section 31 connected with the battery 1, a second section 32 coated outside the transmission mechanism, and a third section 33 for extending the movable scissors 51 and the static scissors 52, wherein the first section 31, the second section 32 and the third section 33 comprise two parts which are spliced left and right, a frame-shaped handle 34 is connected between the second section 32 and the third section 33, an operation handle 35 is connected in the frame-shaped handle 34, the operation handle 35 is connected with a friction plate 53 and is used for driving the friction plate 53 to abut against or separate from the side wall of the movable scissors 51, and the emergency stop operation of the movable scissors 51 is realized. As shown in fig. 4, the friction plate 53 is in a fan shape, an inner ring of the friction plate 53 forms a first arc notch 531, two ends of the friction plate respectively form a second arc notch 532, the operating handle 35 is rotatably connected to one end of the friction plate 53, an upper limiting column 331 and a lower limiting column 331 are formed in the third segment 33, an outer diameter of the limiting column 331 is matched with the second arc notch 532, and the position of the limiting column is just on a circumferential rotation path of the friction plate 53, so that the second arc notch 532 can abut against the limiting column 331, and a rotation stroke of the friction plate 53 is determined. First arc breach 531 and the lateral wall cooperation of moving scissors 51, when needs scram, exert external force and press and control handle 35 for first arc breach 531 offsets with the contact of moving scissors 51 outer wall, and the frictional force of production can be so that move scissors 51 and stop the rotation, and the second arc breach 532 of below can offset with the spacing post 331 of below this moment, and both cooperations stop work to moving scissors 51 emergency braking, and the structure is more firm, and the scram is more stable.

The mounting panel 6 is obliquely mounted above the connecting part 44, the mounting panel 6 is connected with the circuit board 2, and the mounting panel 6 is provided with a touch unlocking part 61 capable of inputting fingerprints to achieve the purpose of fingerprint unlocking and a switch key 62, so that the touch unlocking part 61 and the key 62 extend out of the third section body 33. For convenience of operation, the third segment 33 has an arch-shaped cross section, the installation panel 6 is obliquely installed on the inclined surface of the arch-shaped structure on the side close to the second segment 32, and the frame-shaped handle 34 is disposed opposite to the installation panel 6, i.e. the frame-shaped handle 34 and the installation panel 6 are respectively located below and above the housing 3 at corresponding positions.

The above detailed description is provided for illustrative purposes, and is not intended to limit the present invention, and any modifications and variations of the present invention are within the spirit and scope of the following claims.

Claims

1. An electric trimmer comprising a battery (1), a circuit board (2), a transmission mechanism connected to the circuit board (2), a scissor assembly, and a housing (3), characterized in that: the transmission mechanism comprises a motor (41), a speed reducer (42) connected with the motor (41), a bevel gear (43) connected with the speed reducer (42), and a connecting part (44) positioned at the front end of the bevel gear (43); the scissors assembly comprises a movable scissors (51) rotationally connected with the connecting part (44), a sector gear assembly connected with the movable scissors (51), a static scissors (52) matched with the movable scissors (51), and a friction plate (53), wherein the sector gear assembly comprises a tooth part (541) which can be connected with the bevel gear (43) in a matched manner, a mounting hole (542) rotationally connected with the movable scissors (51), and a fixing hole (543) which is positioned on the other side of the mounting hole (542) and can be fixedly connected with the movable scissors (51); the shell (3) comprises a first section (31) connected with the battery (1), a second section (32) wrapped outside the transmission mechanism and a third section (33) extending out of the movable scissors (51) and the static scissors (52), a frame-shaped handle (34) is connected between the second section (32) and the third section (33), and an operation handle (35) positioned in the frame-shaped handle (34) is connected with the friction plate (53) and used for driving the friction plate (53) to abut against or separate from the movable scissors (51); an installation panel (6) connected with the circuit board (2) is obliquely installed above the connecting part (44), and a touch unlocking part (61) and a key (62) on the installation panel (6) extend out of the third section body (33).

2. The electric trimming blade of claim 1, wherein: and a limiting column (331) which can be abutted against the friction plate (53) is formed in the third section body (33).

3. The electric trimming blade according to claim 2, wherein: the friction plate (53) is fan-shaped, a first arc-shaped notch (531) which can be abutted against the movable scissors (51) is formed in the inner ring of the friction plate, a second arc-shaped notch (532) which can be abutted against the limiting column (331) is formed in the two ends of the friction plate, and the control handle (35) is rotatably connected to the end part of the friction plate (53).

4. The electric trimming blade of claim 1, wherein: the front end of the connecting part (44) is provided with a connecting hole (441), and the movable scissors (51) and the static scissors (52) are rotatably connected to the connecting hole (441).

5. The electric trimming blade according to claim 4, wherein: the angle adjusting assembly is connected to the static scissors (52) and comprises a first gear (71) coaxially connected with the connecting hole (441), an adjusting gasket (72) connected between the first gear (71) and the static scissors (52), a stroke groove (73) formed in the adjusting gasket (72), a second gear (74) capable of being meshed with the first gear (71), and a fastener (75) penetrating through the stroke groove (73) and enabling the second gear (74) to be pressed against the adjusting gasket (72), the adjusting gasket (72) is connected with the first gear (71) in a rotation stopping matching mode, and the first gear (71) is connected with the static scissors (52) in a rotation stopping matching mode.

6. The electric trimming blade of claim 1, wherein: the cross section of the third section body (33) is arched, the installation panel (6) is obliquely arranged on the inclined surface of the arched structure close to one side of the second section body (32), and the frame-shaped handle (34) is arranged opposite to the installation panel (6).