CN115319186A - Electric scissors - Google Patents

Abstract

The electric shears comprises a housing, a motor positioned in the housing, a transmission mechanism driven by the motor and a shear head connected with the transmission mechanism, wherein the motor drives the shear head to move in an opening and closing manner through the transmission mechanism. The transmission mechanism comprises a gear box positioned in the casing, the gear box is provided with a front end part exposed out of the outer side of the front end of the casing, and the scissor head comprises a head casing axially fixed at the front end part. The electric scissors comprise a rotating ring positioned in the head shell and a self-locking button positioned on the shell, the self-locking button is provided with a pressing part positioned at the rear side of the rotating ring and a first clamping part protruding from the pressing part to the rotating ring, and the rotating ring is fixed on the inner side of the rear end of the head shell and is provided with a second clamping part clamping the first clamping part. The self-locking button has a pressing state and a releasing state, and the first clamping part and the second clamping part are separated or clamped at the moment, so that the scissor head rotates or is fixed relative to the machine shell, and the free rotation of the scissor head can be adjusted according to needs.

Description

Electric scissors

[ technical field ] A

The invention relates to the technical field of electric tools, in particular to an electric shears with a rotatable shear head.

[ background ] A method for producing a semiconductor device

The electric shears are hand-held electric tools which take a motor arranged in an electric shears main body as power and drive a shears device positioned at the front end of the electric shears main body through a transmission mechanism to carry out shearing operation. The electric scissors drive the eccentric wheel through the motor and the transmission mechanism to drive the moving cutter head of the scissors device to do reciprocating swing motion, and form shearing action with the fixed cutter head. The existing scissors device is directly fixedly connected to a casing of an electric scissors main body, cannot be rotated and adjusted, is easily limited by space during use, and can not be well adapted to different shearing positions, so that shearing operation cannot be finished. At present, electric scissors with scissors devices capable of being adjusted in a rotating mode are also available on the market, however, the structures of the electric scissors for achieving rotation and locking are complex generally, operation is troublesome during adjustment, and working efficiency is affected. Moreover, the electric scissors are friendly to human engineering, but the overall appearance volume is overlarge; or has a slightly smaller volume, but is not very friendly to human engineering and is easy to fatigue when being held for a long time. Meanwhile, the lighting working lamp of the electric shears is far away from the working area of the shears device, so that the lighting effect is poor.

Accordingly, there is a need for an improved electric shears to overcome the drawbacks of the prior art.

[ summary of the invention ]

Aiming at the defects of the prior art, the invention aims to provide the electric shears with the self-locking button, the self-locking button is simple and convenient to operate, and the scissor head can be adjusted to freely rotate; and the electric shears have small overall size and take human engineering into consideration.

The technical scheme adopted by the invention for solving the problems in the prior art is as follows: an electric scissors comprises a casing, a motor positioned in the casing, a transmission mechanism driven by the motor and a scissors head connected to the transmission mechanism, wherein the motor drives the scissors head to make opening and closing movement through the transmission mechanism. The transmission mechanism comprises a gear box positioned in the casing, the gear box is provided with a front end part exposed out of the outer side of the front end of the casing, and the scissor head is arranged at the front end of the casing and comprises a head casing axially fixed at the front end part. The electric scissors comprise a rotating ring positioned in the head shell and a self-locking button positioned on the shell, the self-locking button is provided with a pressing part positioned at the rear side of the rotating ring and a first clamping part protruding from the pressing part to the rotating ring, and the rotating ring is fixed on the inner side of the rear end of the head shell and is provided with a second clamping part clamping the first clamping part. The self-locking button is provided with a pressing state and a releasing state, when the self-locking button is in the pressing state, the first clamping part is separated from the second clamping part, the scissor head rotates relative to the shell, when the self-locking button is in the releasing state, the first clamping part is clamped with the second clamping part, and the scissor head is fixed relative to the shell.

The further improvement scheme is as follows: the swivel collar is equipped with and is located annular portion in the head shell, certainly the several card muscle that the inner wall of annular portion is the inside protruding stretching and be located adjacent two several draw-in groove between the card muscle, the card muscle is followed the circumference of annular portion evenly arranges the setting, and every card muscle and adjacent two the draw-in groove forms second block portion.

The further improvement scheme is as follows: the first clamping portion is of a pawl structure and is provided with two protrusions extending from the bottom edge of the pressing portion towards the rotating ring and a gap located between the two protrusions, when the first clamping portion is clamped on the second clamping portion, the protrusions are contained in the clamping grooves, and the clamping ribs are contained in the gap.

The further improvement scheme is as follows: the head shell is provided with a groove sunken from the inner wall of the rear end, the rotating ring is provided with a boss protruding outwards from the outer wall of the annular part, and the boss is fixedly arranged in the groove so that the rotating ring is fixed in the head shell.

The further improvement scheme is as follows: the rotating ring is provided with 16 clamping ribs, and the clamping ribs are arranged on the inner wall of the annular part at intervals of an included angle of 22.5 degrees.

The further improvement scheme is as follows: the self-locking button is provided with an elastic piece positioned in the shell, one end of the elastic piece is connected to the bottom of the pressing part, and the other end of the elastic piece is abutted to the outer wall of the gear box.

The further improvement scheme is as follows: when the self-locking button is switched from a releasing state to a pressing state, the pressing part is pressed, the elastic piece is compressed and has reset elasticity, the first clamping part and the second clamping part are separated, and the scissor head rotates relative to the shell.

The further improvement scheme is as follows: when the self-locking button is switched from a pressing state to a releasing state, the pressing part returns to the original position under the action of the reset elasticity of the elastic piece, so that the first clamping part and the second clamping part are clamped, and at the moment, the scissor head is fixed relative to the shell.

The further improvement scheme is as follows: the transmission mechanism comprises a planetary gear train mechanism positioned in the gear box and an output shaft connected with the planetary gear train mechanism, the motor is provided with a motor shaft extending into the gear box, the motor shaft is connected with the planetary gear train mechanism to drive the output shaft to rotate, and the front end of the output shaft extends into the head shell and drives the scissor head to perform clamping movement.

The further improvement scheme is as follows: the electric shears further include an illumination assembly located at a top of the housing, the illumination assembly being disposed adjacent to the shears head, and a top of the head housing of the shears head being no higher than the illumination assembly.

Compared with the prior art, the invention has the following beneficial effects: the electric scissors comprise a rotating ring positioned in the head shell and a self-locking button positioned on the shell, the self-locking button is provided with a pressing part positioned at the rear side of the rotating ring and a first clamping part protruding from the pressing part to the rotating ring, and the rotating ring is fixed on the inner side of the rear end of the head shell and is provided with a second clamping part clamping the first clamping part. The self-locking button is provided with a pressing state and a releasing state, when the self-locking button is in the pressing state, the first clamping part is separated from the second clamping part, the scissor head rotates relative to the machine shell, when the self-locking button is in the releasing state, the first clamping part is clamped with the second clamping part, and the scissor head is fixed relative to the machine shell. The self-locking button is simple and convenient to operate, and the scissor head can be adjusted as required to realize 360-degree free rotation; and the whole volume of the electric shears is small, the whole design accords with human engineering, and the human body is not easy to fatigue when the electric shears work for a long time. Meanwhile, the illumination assembly is located at the top of the shell and is arranged close to the scissor head, the structure is simple, and no dead angle exists in illumination.

[ description of the drawings ]

The following detailed description of embodiments of the invention is provided in conjunction with the appended drawings:

FIG. 1 is a front view of an electric shears according to a preferred embodiment of the present invention;

FIG. 2 is a front view of the pair of electric shears of FIG. 1 with a portion of the housing removed;

FIG. 3 is a front view of the pair of electric shears of FIG. 1 with a portion of the head housing removed;

FIG. 4 is a cross-sectional view of the electric shears shown in FIG. 1;

FIG. 5 is a cross-sectional view of the electric shears shown in FIG. 1 in another orientation;

FIG. 6 is an exploded view of the front end of the pair of electric shears shown in FIG. 1;

FIG. 7 is a perspective view of the electric shears shown in FIG. 1, illustrating the self-locking button engaged with the head casing;

fig. 8 is a front view of the electric shears shown in fig. 1 after the shear head is rotated 180 degrees.

The meaning of the reference symbols in the figures:

100. electric scissors 101, main body 102, grip 103, switch assembly 104, control circuit board 10, case 20, scissor head 21, head case 210, accommodation groove 211, recess 22, stationary blade 23, moving blade 30, motor 31, motor shaft 40, transmission mechanism 41, gear box 410, annular groove 42, planetary gear mechanism 43, output shaft 44, eccentric wheel 441, needle bearing 50, rotary ring 51, annular portion 52, boss 53, clamping rib 54, clamping groove 60, self-locking button 61, pressing portion 62, elastic member 63, first clamping portion 70, lighting assembly 80, battery pack

[ detailed description ] A

The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. Words such as "upper," "lower," "front," "rear," and the like, which indicate orientation or positional relationship, are based only on the orientation or positional relationship shown in the drawings and are merely for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices/elements must have a particular orientation or be constructed and operated in a particular orientation and, therefore, should not be taken as limiting the present invention.

Referring to fig. 1 to 8, an electric shears 100 for cutting or shearing materials (such as metal sheets) according to a preferred embodiment of the present invention is shown. The electric shears 100 includes a main body 101 extending along a longitudinal direction and a grip portion 102 connected to a lower portion of the main body 101, wherein the grip portion 102 is held by a user. The bottom end of the grip portion 102 is connected to a battery pack 80, and the battery pack 80 is used for supplying power for the normal operation of the electric shears 100.

According to the application and application environment of the electric shears 100, a switch component 103 and a control circuit board 104 are arranged in the holding portion 102, the switch component 103 is arranged at a position convenient for a user to press when the user holds the electric shears, and part of the switch component 103 is exposed out of the holding portion 102 so as to be convenient for pressing. The control circuit board 104 is electrically connected to the switch assembly 103 for controlling the normal operation of the electric shears 100.

Referring to fig. 3 to 4, the pair of electric shears 100 includes a housing 10, a scissor head 20 disposed at a front end of the housing 10 in a longitudinal direction, a motor 30 disposed in the housing 10, and a transmission mechanism 40 driven by the motor 30, wherein the scissor head 20 is connected to a front end of the transmission mechanism 40 in the longitudinal direction, and the motor 30 drives the scissor head 20 to move in an opening and closing manner through the transmission mechanism 40.

The transmission mechanism 40 includes a gear case 41 located in the casing 10, a planetary gear mechanism 42 located in the gear case 41, and an output shaft 43 connected to the planetary gear mechanism 42, and the gear case 41 is provided with a front end portion (not numbered) exposed outside a longitudinal front end of the casing 10. The motor 30 is provided with a motor shaft 31 extending into the gear box 41, the motor shaft 31 is connected to the planetary gear train 42 to drive an output shaft 43 to rotate, and the front end of the output shaft 43 extends into the head shell 21 of the scissors head 20 and drives the scissors head 20 to move in an opening and closing manner.

The scissor head 20 comprises a head shell 21 positioned at the longitudinal front end of the housing 10, and a static knife head 22 and a moving knife head 23 arranged on the head shell 21. The gear case 41 is provided with an annular groove 410 formed by inward recessing of the peripheral wall of the front end portion, the head casing 21 is provided with an accommodating groove 210 opened backward and an annular buckling portion (not numbered) located at the edge of the accommodating groove 210, the front end portion of the gear case 41 is accommodated in the accommodating groove 210, and the buckling portion is clamped in the annular groove 410, so that the head casing 21 is axially fixed at the front end portion of the gear case 41.

As shown in fig. 6, in the present embodiment, the number of the static blades 22 of the scissor head 20 is two, the two static blades 22 are fixedly disposed in parallel in the head housing 21 and exposed to the longitudinal front end of the head housing 21, and the movable blade 23 is disposed between the two static blades 22 and is swingably disposed in the head housing 21. An eccentric 44 is connected to the front longitudinal end of the output shaft 43, the eccentric 44 is connected to the output shaft 43 through a needle bearing 441, and the eccentric 44 is located in the substantially C-shaped driving portion of the movable blade 22. The output shaft 43 drives the movable cutter head 23 to swing up and down through the eccentric wheel 44, so that shearing operation is formed between the movable cutter head 23 and the static cutter head 22.

The working principle of the cutting head 20 is as follows: when the motor 30 is energized, the motor shaft 31 rotates an output shaft 43 through the planetary gear train 42, and the output shaft 43 rotates the needle bearing 441 and the eccentric wheel 44. When the eccentric 44 rotates, the eccentric 44 presses against the generally C-shaped drive portion of the moving blade 23 to pivot the moving blade 23, whereby the moving blade 23 pivots relative to the stationary blade 22 to cut or shear material.

Referring to fig. 5 to 7, the pair of electric shears 100 includes a rotatable ring 50 disposed in the head housing 21 and a latching button 60 disposed on the housing 10, wherein the latching button 60 is engaged with the rotatable ring 50. The rotating ring 50 has a ring portion 51 located in the head housing 21, a boss 52 protruding outward from an outer wall of the ring portion 51, a plurality of clamping ribs 53 protruding inward from an inner wall of the ring portion 51, and a plurality of clamping grooves 54 located between two adjacent clamping ribs 53. The head housing 21 is provided with a groove 211 recessed from the inner wall of the rear end, and the boss 52 is held in the groove 211 so that the rotary ring 50 is fixed to the inner side of the rear end of the head housing 21.

The clamping ribs 53 are uniformly arranged along the circumferential direction of the annular portion 51, and each clamping rib 53 and two adjacent clamping grooves 54 form a second clamping portion for clamping the self-locking button 60. In this embodiment, the rotating ring 50 has 16 locking ribs 53, and the locking ribs 53 are arranged on the inner wall of the annular portion 51 at intervals of an included angle of 22.5 degrees, so that the scissor head 20 can be adjusted at an angle position of 16 degrees relative to the housing 10.

Specifically, the latching button 60 has a pressing portion 61 located at the rear side of the rotating ring 50, an elastic member 62 located in the casing 10, and a first engaging portion 63 protruding from the pressing portion 61 toward the rotating ring 50, and the pressing portion 61 is partially exposed outside the casing 10 for pressing operation by a user. The elastic member 62 is a return spring, and one end of the elastic member 62 is connected to the bottom of the pressing portion 61, and the other end of the elastic member 62 abuts against the outer wall of the gear box 41 to provide a return elastic force for the pressing portion 61. The first engaging portion 63 is a pawl structure and has two protrusions extending from the bottom edge of the pressing portion 61 toward the rotating ring 50 and a gap between the two protrusions, when the first engaging portion 63 is clamped to the second engaging portion, the protrusions are received in the clamping grooves 54, and the clamping ribs 53 are received in the gap.

The self-locking button 60 has a pressed state and a released state, when the self-locking button 60 is in the pressed state, the first engaging portion 63 and the second engaging portion are disengaged, and the scissor head 20 rotates relative to the housing 10; when the self-locking button 60 is in the release state, the first engaging portion 63 and the second engaging portion are engaged with each other, and the scissor head 20 is fixed with respect to the housing 10. The self-locking button 60 is simple and convenient to operate, and the scissor head 20 can be adjusted to freely rotate in 360 degrees as required; the electric shears 100 is small in overall size, the overall design is in accordance with human engineering, and human bodies are not easy to fatigue when the electric shears work for a long time.

Further, when the self-locking button 60 is switched from the release state to the pressing state, the pressing portion 61 is pressed, the elastic member 62 is compressed and has a return elastic force, and the first engaging portion 63 and the second engaging portion are urged to be disengaged, at this time, the scissor head 20 rotates relative to the housing 10, so that the adjustment of the shearing angle is realized, and the adjustment operation is convenient. When the self-locking button 60 is switched from the pressed state to the released state, the pressing portion 61 returns to the original position under the action of the return elastic force of the elastic member 62, so that the first engaging portion 63 and the second engaging portion are engaged, at this time, the scissors head 20 is fixed relative to the housing 10, and at this time, the scissors head 20 is adjusted to a desired position to perform a cutting operation on an object to be cut.

The complete workflow of the rotation adjustment of the scissor head 20 is as follows: when the self-lock button 60 is in the release state, the first engaging portion 63 of the self-lock button 60 is engaged with the second engaging portion of the rotary ring 50, so as to prevent the scissor head 20 from rotating. When the pressing portion 61 of the self-locking button 60 is pressed, the first engaging portion 63 is disengaged from the second engaging portion, the scissor head 20 can drive the rotating ring 50 to rotate, the pressing portion 61 of the self-locking button 60 is released until the scissor head 20 is rotated to a desired position, the pressing portion 61 is restored to a release state under the action of the return elastic force of the elastic member 62 to lock the scissor head 20, and at this time, the scissor head 20 can perform a cutting operation on an object to be cut.

The pair of electric shears 100 further includes an illumination assembly 70 located at the top of the housing 10, the illumination assembly 70 having LED lights and being disposed adjacent to the scissor head 20. The part of the machine shell 10, which is positioned at the front end of the lighting assembly 70, is not higher than the lighting assembly 70, and the top of the head shell 21 of the scissors head 20 is not higher than the lighting assembly 70, so that the light emitted by the lighting assembly 70 can be irradiated to the static knife head 22 and the movable knife head 23 without shielding, and lighting without dead angles is formed.

In the present invention, the electric shears 100 includes a rotary ring 50 located in the head housing 21 and a self-locking button 60 located on the housing 10, the self-locking button 60 is provided with a pressing portion 61 located at the rear side of the rotary ring 50 and a first engaging portion 63 protruding from the pressing portion 61 toward the rotary ring 50, and the rotary ring 50 is fixed at the inner side of the rear end of the head housing 21 and is provided with a second engaging portion for engaging with the first engaging portion 63. The self-locking button 60 has a pressed state and a released state, when the self-locking button 60 is in the pressed state, the first engaging portion 63 is disengaged from the second engaging portion, the scissor head 20 rotates relative to the housing 10, when the self-locking button 60 is in the released state, the first engaging portion 63 is engaged with the second engaging portion, and the scissor head 20 is fixed relative to the housing 10.

The self-locking button 60 is simple and convenient to operate, and the scissor head 20 can be adjusted to freely rotate in 360 degrees as required; the electric shears 100 is small in overall size, the overall design is in accordance with human engineering, and human bodies are not easy to fatigue when the electric shears work for a long time. Meanwhile, the lighting assembly 70 is positioned at the top of the housing 10 and is arranged adjacent to the scissor head 20, so that the structure is simple and the lighting is free of dead angles.

The present invention is not limited to the above-described embodiments. It will be readily appreciated by those skilled in the art that many alternatives to the presently disclosed electric shears may be employed without departing from the spirit and scope of the present invention. The protection scope of the present invention is subject to the content of the claims.

Claims (10)

1. An electric scissors comprises a casing, a motor positioned in the casing, a transmission mechanism driven by the motor and a scissors head connected with the transmission mechanism, wherein the motor drives the scissors head to make opening and closing movement through the transmission mechanism; the transmission mechanism comprises a gear box positioned in the shell, the gear box is provided with a front end part exposed out of the outer side of the front end of the shell, and the scissor head is arranged at the front end of the shell and comprises a head shell axially fixed at the front end part; the method is characterized in that: the electric scissors comprise a rotating ring positioned in the head shell and a self-locking button positioned on the shell, the self-locking button is provided with a pressing part positioned at the rear side of the rotating ring and a first clamping part protruding from the pressing part towards the rotating ring, and the rotating ring is fixed at the inner side of the rear end of the head shell and is provided with a second clamping part for clamping the first clamping part; the self-locking button is provided with a pressing state and a releasing state, when the self-locking button is in the pressing state, the first clamping part is separated from the second clamping part, the scissor head rotates relative to the casing, when the self-locking button is in the releasing state, the first clamping part is clamped with the second clamping part, and the scissor head is fixed relative to the casing.

2. Electric shears according to claim 1, wherein: the swivel collar is equipped with and is located annular portion in the head shell, certainly the several card muscle that the inner wall of annular portion is the inside protruding stretching and be located adjacent two several draw-in groove between the card muscle, the card muscle is followed the circumference of annular portion evenly arranges the setting, and every card muscle and adjacent two the draw-in groove forms second block portion.

3. Electric shears according to claim 2, wherein: the first clamping part is of a pawl structure and is provided with two protrusions extending from the bottom edge of the pressing part towards the rotating ring and a gap located between the two protrusions, when the first clamping part is clamped in the second clamping part, the protrusions are contained in the clamping grooves, and the clamping ribs are contained in the gap.

4. Electric shears according to claim 2, wherein: the head shell is provided with a groove sunken from the inner wall of the rear end, the rotating ring is provided with a boss protruding outwards from the outer wall of the annular part, and the boss is fixedly arranged in the groove so that the rotating ring is fixed in the head shell.

5. Electric shears according to claim 2, wherein: the rotating ring is provided with 16 clamping ribs, and the clamping ribs are arranged on the inner wall of the annular part at intervals of an included angle of 22.5 degrees.

6. Electric shears according to claim 1, wherein: the self-locking button is provided with an elastic piece positioned in the shell, one end of the elastic piece is connected to the bottom of the pressing part, and the other end of the elastic piece is abutted to the outer wall of the gear box.

7. Electric shears according to claim 6, wherein: when the self-locking button is switched from a releasing state to a pressing state, the pressing part is pressed, the elastic piece is compressed and has reset elasticity, the first clamping part and the second clamping part are separated, and at the moment, the scissor head rotates relative to the shell.

8. Electric shears according to claim 7, wherein: when the self-locking button is switched from a pressing state to a releasing state, the pressing part returns to the original position under the action of the reset elasticity of the elastic piece, so that the first clamping part and the second clamping part are clamped, and at the moment, the scissor head is fixed relative to the shell.

9. Electric shears according to claim 1, wherein: the transmission mechanism comprises a planetary gear train mechanism positioned in the gear box and an output shaft connected with the planetary gear train mechanism, the motor is provided with a motor shaft extending into the gear box, the motor shaft is connected with the planetary gear train mechanism to drive the output shaft to rotate, and the front end of the output shaft extends into the head shell and drives the scissor head to perform clamping movement.

10. Electric shears according to claim 1, wherein: the electric shears also include an illumination assembly located at a top of the housing, the illumination assembly being disposed adjacent to the shears head, and a top of the head housing of the shears head being no higher than the illumination assembly.

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