CN106472127A - Electric garden branch shears - Google Patents

Abstract

The invention discloses an electric garden branch shear, which comprises a shell, a knife rest, a fixed blade, a rotary blade and an electric rotary driving device, wherein the knife rest is arranged at one end of the shell, the fixed blade is fixed on the knife rest, the middle part of the rotary blade is rotationally arranged on the knife rest or the fixed blade, and the rotary driving device can drive the rotary blade to rotate relative to the fixed blade to realize shearing or stretching actions without manpower, so that the shearing actions are not required to be completed, the labor intensity of branch pruning during garden operation is greatly reduced, the working efficiency is improved, and the labor cost is reduced; furthermore, the rotation driving device realizes transmission of the intersecting shafts through the bevel gear mechanism, so that the structure is more compact, the appearance volume and the weight of the tree shears are greatly reduced, the carrying is easy, the operation is more convenient, the labor intensity is lower, the transmission ratio is large, the shearing force is large, and the suitable range is wider.

Description

Electric garden branch shears

technical field

The invention relates to the field of garden tools, in particular to an electric garden branch shear.

Background technique

Branch scissors are often used for pruning garden branches. It usually completes the cutting action by manually operating the handle. The structure of the connecting rod mechanism is becoming more and more complicated. Although the intensity of labor is reduced to a certain extent, in the actual use process, the workload of pruning the garden is huge. Even if it is an additional labor-saving structure, it is still a huge amount of labor. Work, work efficiency is low, and labor cost is high.

Contents of the invention

In order to overcome the deficiencies in the prior art, the invention provides an electric garden branch shear.

The technical solution adopted by the present invention to solve its technical problems is:

An electric garden branch scissors, comprising a branch scissors body, the branch scissors body includes a housing, a knife holder, a fixed blade, a rotating blade and an electric rotating drive device, the knife holder is arranged at one end of the housing, and the fixed blade Fixed on the knife holder, the middle part of the rotating blade is rotatably set on the knife holder or the fixed blade, and the rotating drive device can drive the rotating blade to rotate relative to the fixed blade to realize cutting or opening;

The rotary driving device includes a motor output mechanism and a bevel gear transmission mechanism. The bevel gear transmission mechanism includes a driving bevel gear and a driven sector bevel gear. The motor output mechanism is arranged along the length direction of the housing and connected with the driving bevel gear. , the driven sector bevel gear is arranged at one end of the rotating blade and meshed with the driven sector bevel gear.

The middle part of the rotating blade is rotatably arranged on the fixed blade through a rotating shaft screw.

The shaft screw passes through the center of rotation of the driven sector bevel gear and the middle of the rotating blade in turn and is connected to the fixed blade. The position of the driven sector bevel gear deviated from the center of rotation is fixed to one end of the rotating blade by a fixing screw.

The end of the fixing screw is exposed through the rotating blade, and the fixing blade is provided with an arc-shaped limiting groove that can be inserted into the end of the fixing screw, and the rotating edge is limited by the cooperation of the arc-shaped limiting groove and the end of the fixing screw. range of rotation angles.

The motor output mechanism includes a motor and a planetary gear reducer connected to the output shaft of the motor. The front end of the planetary gear reducer is fixed on the tool holder, and the output shaft of the planetary gear reducer is connected to the driving bevel gear.

The branch shears body also includes a power supply and a motor control circuit connected to the power supply. The power supply includes a power switch, and the motor control circuit includes a motor switch. Both the power switch and the motor switch are contact-type the push switch.

The motor control circuit is equipped with a rotation angle control device, and the rotation angle control device includes an induction circuit board arranged on the side of the driven sector bevel gear, and the induction circuit board is provided with several position sensors corresponding to the driven sector bevel gear.

The position sensor is an infrared sensor, and the driven sector bevel gear is provided with an induction hole corresponding to the infrared sensor.

The power supply is a storage battery, the storage battery is equipped with a charging circuit, and the housing is provided with a charging interface connected to the charging circuit.

A state light is arranged on the housing, and the state light is connected with the motor control circuit.

The beneficial effect of the present invention is: a kind of electric garden branch scissors, comprises branch scissors main body, and described branch scissors body comprises housing, tool holder, fixed blade, rotating blade, and electric rotating drive device, and described tool holder is arranged on At one end of the housing, the fixed blade is fixed on the knife holder, and the middle part of the rotating blade is rotatably arranged on the knife holder or the fixed blade, and the rotating driving device can drive the rotating blade to rotate relative to the fixed blade to realize cutting or opening. There is no need to use manpower to complete the cutting action, which greatly reduces the labor intensity of branch pruning during gardening operations, improves work efficiency, and reduces labor costs.

Further, the rotation driving device includes a motor output mechanism and a bevel gear transmission mechanism, the bevel gear transmission mechanism includes a driving bevel gear and a driven sector bevel gear, and the motor output mechanism is arranged along the length direction of the housing and connected to the driving bevel Gear connection, the driven sector bevel gear is set at one end of the rotating blade and meshed with the driven sector bevel gear, the transmission of the intersecting shafts is realized through the bevel gear mechanism, which makes the structure more compact and greatly reduces the damage of branch shears. The appearance volume and weight are easy to carry, the operation is more convenient, the labor intensity is lower, and the transmission ratio is large, the shearing force is large, and the suitable range is wider.

Description of drawings

The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

Fig. 1 is a structural representation of the present invention;

Fig. 2 is the exploded schematic diagram of the present invention;

Fig. 3 is the structural representation of transmission part of the present invention;

Fig. 4 is an exploded schematic view of the transmission part of the present invention;

detailed description

Referring to Fig. 1 to Fig. 4, Fig. 1 to Fig. 4 are structural schematic diagrams of a specific embodiment of the present invention, as shown in the figure, an electric garden branch scissors includes a branch scissors body, and the branch scissors body includes a housing 1, Tool holder 2, fixed blade 3, rotating blade 4 and electric rotating drive device, said tool holder 2 is arranged on one end of the housing 1, said fixed blade 3 is fixed on the knife holder 2, and the middle part of said rotating blade 4 is rotated On the tool holder 2 or the fixed blade 3, the rotating driving device can drive the rotating blade 4 to rotate relative to the fixed blade 3 to realize cutting or opening action, without using manpower to complete the cutting action, which greatly reduces the need for tree branch pruning during gardening operations. Reduce labor intensity, improve work efficiency and reduce labor costs.

Preferably, the rotation driving device includes a motor output mechanism and a bevel gear transmission mechanism, the bevel gear transmission mechanism includes a driving bevel gear 51, a driven sector bevel gear 52, and the motor output mechanism is arranged along the length direction of the housing 1 And connected with the driving bevel gear 51, the driven sector bevel gear 52 is arranged at one end of the rotating blade 4 and meshed with the driven sector bevel gear 52, the transmission of the intersecting shafts is realized through this structure, so that the motor output mechanism can move along the housing 1 Arranged in the length direction, the structure is more compact, the transmission mechanism is simplified, the shape and weight of the branch shears are greatly reduced, it is easy to carry, the operation is more convenient, the labor intensity is lower, and the transmission ratio is large, and the shearing force is large , suitable for a wider range.

In the specific implementation process, the worm gear mechanism can be used to replace the bevel gear transmission mechanism. The worm gear mechanism can realize the transmission of the interlaced shafts, and can also realize the function of the motor output mechanism arranged along the length direction of the housing 1 in the present invention, but the worm gear mechanism The production and processing of the mechanism is difficult, the cost of manufacturing and maintenance is high, and the service life is not long. Although it can meet high-precision transmission, in the present invention, the precision of transmission is not high, so bevel gear transmission is preferably used to reduce costs and simplify At the same time, because the worm gear mechanism realizes the transmission of the interlaced shafts, the volume of the mechanism is larger than that of the bevel gear transmission mechanism.

Preferably, in this embodiment, the middle part of the rotating blade 4 is rotated on the fixed blade 3 through a rotating shaft screw 41 cooperating with a fixing nut, and the rotating shaft screw 41 passes through the rotation center of the driven sector bevel gear 52 and The middle part of the rotating blade 4 is connected to the fixed blade 3 behind, and the driven sector bevel gear 52 is fixed on one end of the rotating blade 4 by a fixing screw 42 at a position deviated from the center of rotation to realize the synchronization between the rotating blade 4 and the driven sector bevel gear 52 turn.

Preferably, the end of the fixing screw 42 is exposed through the rotating blade 4, and the fixing blade 3 is provided with an arc-shaped limiting groove 31 that can be inserted into the end of the fixing screw 42. Through the arc-shaped limiting groove 31 and The cooperation of the ends of the fixing screws 42 limits the range of rotation angles of the rotating blade 4, prevents the excessive opening or closing of the rotating blade 4 and causes damage to the mechanism, and prevents the driving bevel gear 51 from moving out of the range of meshing with the driven sector bevel gear 52. cause the mechanism to fail.

Preferably, the motor output mechanism includes a motor 61 and a planetary gear reducer 62 connected to the output shaft of the motor 61, the front end of the planetary gear reducer 62 is fixed on the tool rest 2, and the output shaft of the planetary gear reducer 62 is connected to As for the driving bevel gear 51, by adopting the planetary gear reducer 62, a high transmission ratio is realized, the shearing force is increased, and the volume of the reduction mechanism is reduced at the same time.

Preferably, the branch shear body also includes a power supply and a motor control circuit connected to the power supply, the power supply includes a power switch 71, the motor control circuit includes a motor switch 72, the power switch 71 and the motor The switches 72 are all contact type push switches, and the power switch 71 and the motor switch 72 are arranged on the same side of the housing 1. In this embodiment, the power switch 71 and the motor switch 72 are preferably arranged on the housing 1 Below, when in use, the staff holds the branch shears body. It is necessary to press the power switch 71 first to switch on the power supply, and then press the motor switch 72, so that the motor 61 can work normally. 71 and motor switch 72 are selected as push-type contact switches, which will not act when there is no pressing by hand, so as to prevent false triggering and improve safety.

Preferably, the protective strip 11 corresponding to the motor switch 72 is also configured on the housing 1, and the protective strip 11 is protected outside the motor switch 72. Preferably, the protective strip 11 is annularly arranged on the outside of the motor switch 72, so as to facilitate the penetration of human hands. control, while preventing external objects from triggering the motor switch 72, improving safety.

Preferably, the motor control circuit is equipped with a rotation angle control device, the rotation angle control device includes an induction circuit board 73 arranged on the side of the driven sector bevel gear 52, and the induction circuit board 73 is provided with several The position sensor corresponding to the gear 52 realizes the rotation angle induction of the driven sector bevel gear 52 through the position sensor, and transmits the rotation angle induction to the motor control circuit to control the rotation of the motor 61 and prevent the motor from being overloaded at the extreme position.

Preferably, the position sensor is an infrared sensor, and the driven sector bevel gear 52 is provided with a sensing hole corresponding to the infrared sensor to sense the angle of the driven sector bevel gear 52. In addition, the position sensor can also It is a contact-type travel switch, which can also realize position sensing and control, and will not be described in detail here.

Preferably, the power supply is a storage battery, the storage battery is equipped with a charging circuit, and the housing 1 is provided with a charging interface 74 connected to the charging circuit, so as to facilitate outdoor carrying and use of the branch shears.

Preferably, the housing 1 is provided with a status light 75, which is connected to the motor control circuit to remind the operator of the working state of the motor. When the status light 75 is on, it reminds the operator that the motor is in an active state At this time, it is necessary to pay attention to the position of the cutting edge of the branch to avoid accidents.

The preferred implementation of the present invention has been described in detail above. Of course, the present invention can also adopt different forms from the above-mentioned embodiments. Those skilled in the art can make equivalent transformations or corresponding equivalents without violating the spirit of the present invention. Any changes should fall within the protection scope of the present invention.

Claims (10)

1. a kind of electric garden tree shears, including tree shears body it is characterised in that：Described tree shears body includes housing（1）、 Knife rest（2）, fixed blade（3）, rotating sword（4）And electronic device of rotation driving, described knife rest（2）It is arranged on housing（1）One end, Described fixed blade（3）Fix and knife rest（2）On, described rotating sword（4）Middle part is rotatably arranged on knife rest（2）Or fixed blade（3）On, Described device of rotation driving can be rotated sword（4）It is relatively fixed sword（3）Rotate and realize shearing or expansion action；

Described device of rotation driving includes a motor output mechanism and bevel gear transmission, and described bevel gear transmission includes Drive bevel gear（51）, driven fan-shaped bevel gear（52）, described motor output mechanism is along housing（1）Length direction arrangement and with master Dynamic bevel gear（51）Connect, described driven fan-shaped bevel gear（52）It is arranged on rotating sword（4）One end and with driven fan-shaped cone tooth Wheel（52）Engagement.

2. a kind of electric garden tree shears according to claim 1 it is characterised in that：Described rotating sword（4）Middle part is passed through One shaft screw（41）It is rotatably arranged on fixed blade（3）On.

3. a kind of electric garden tree shears according to claim 2 it is characterised in that：Described shaft screw（41）Wear successively Cross driven fan-shaped bevel gear（52）Center of rotation and rotating sword（4）Connect to fixed blade behind middle part（3）, described driven fan-shaped cone Gear（52）Deviate and fixing screws are passed through on the position of center of rotation（42）It is fixed on rotating sword（4）One end.

4. a kind of electric garden tree shears according to claim 2 it is characterised in that：Described fixing screws（42）End is worn Cross rotating sword（4）Expose, described fixed blade（3）On offer and can supply fixing screws（42）End insertion arc-shaped limit groove （31）, by arc-shaped limit groove（31）With fixing screws（42）The cooperation of end limits rotating sword（4）Rotation angle range.

5. a kind of electric garden tree shears according to claim 1 it is characterised in that：Described motor output mechanism includes electricity Machine（61）And and motor（61）The planetary reducer that output shaft connects（62）, described planetary reducer（62）Front end is solid It is scheduled on knife rest（2）On, and planetary reducer（62）Output be pivotally connected to drive bevel gear（51）.

6. a kind of electric garden tree shears according to claim 1 it is characterised in that：Described tree shears body also includes supplying Power supply and the circuit for controlling motor being connected with power supply, described power supply includes an on and off switch（71）, described motor Control circuit includes a motor switch（72）, described on and off switch（71）And motor switch（72）Be contact by pressing off Close.

7. a kind of electric garden tree shears according to claim 6 it is characterised in that：Described circuit for controlling motor is configured with Angle controller, described angle controller includes being arranged on driven fan-shaped bevel gear（52）The sensor circuit plate of side （73）, described sensor circuit plate（73）On be provided with some with driven fan-shaped bevel gear（52）Corresponding position sensor.

8. a kind of electric garden tree shears according to claim 7 it is characterised in that：Described position sensor is infrared biography Sensor, described driven fan-shaped bevel gear（52）On offer sensing hole position corresponding with infrared sensor.

9. a kind of electric garden tree shears according to claim 6 it is characterised in that：Described power supply is an electric power storage Pond, described accumulator is configured with charging circuit, described housing（1）On be provided with the charging inlet being connected with charging circuit（74）.

10. a kind of electric garden tree shears according to claim 6 it is characterised in that：Described housing（1）On be configured with shape State lamp（75）, described status lamp（75）It is connected with circuit for controlling motor.