CN115720773A - Rotary holding device for electric hedge shears - Google Patents

Abstract

The rotary holding device comprises a shell, a rear handle, a push button, a connecting rod and a positioning block. The casing has an annular flange and a plurality of constant head tanks of locating the annular flange, and the annular flange of casing is located to the back handle, pushes away the pivot and establishes the back handle and local expose outside, and the locating piece is located in the back handle and adjacent to establish the annular flange, and the eccentric pivot of one end of connecting rod is established and is pushed away the button, and the locating piece is established to the other end pivot of connecting rod. Therefore, when the push button is unlocked, the positioning block is driven by the connecting rod to be separated from the positioning groove which is originally clamped, so that the rear handle can rotate randomly to adjust the angle, when the push button is locked, the positioning block is clamped in one positioning groove under the action of the elastic piece, so that the rear handle is positioned, and a user can operate at an angle which is more in line with the ergonomics.

Description

Rotary holding device for electric hedge shears

Technical Field

The present invention relates to an electric hedge shears, and more particularly, to a rotary holding device for an electric hedge shears.

Background

In order to allow a user to operate the electric hedge shears stably, the conventional electric hedge shears have a front handle and a rear handle, wherein the front handle is fixed to serve as a supporting pivot, and the rear handle can be rotated to different angles and then positioned, so that the user can adjust the holding angle. However, the conventional rear handle lacks an ergonomic design, so that a user is easily tired after operating for a long time, and thus cannot perform a large amount of trimming work.

Disclosure of Invention

It is a primary object of the present invention to provide a rotary gripping device for electric hedge shears that is ergonomically designed to reduce the feeling of fatigue and increase comfort.

In order to achieve the above objective, the present invention provides a rotary grip device comprising a housing, a rear handle and a positioning unit. The rear end of the shell is provided with an annular flange which is provided with a plurality of positioning grooves arranged at intervals; the rear handle is rotatably arranged on the annular flange of the shell; the positioning unit is provided with a push button, a positioning block, a connecting rod and an elastic piece, the push button is pivoted on the rear handle and can pivot relative to the rear handle, the positioning block is arranged in the rear handle and is adjacent to the annular flange of the shell, the connecting rod is arranged in the rear handle, one end of the connecting rod is eccentrically pivoted on the push button, the other end of the connecting rod is pivoted on the positioning block, and the connecting rod can be driven by the push button to be linked with the positioning block; the elastic piece is arranged in the rear handle and pushes the positioning block towards the direction of the annular flange of the shell.

Therefore, when the angle of the rear handle is to be adjusted, the push button is pushed to the unlocking position, so that the positioning block is separated from the positioning groove which is originally clamped and arranged under the driving of the connecting rod, the rear handle can be rotated to adjust the angle at the moment, the thrust applied to the push button is released until the angle is adjusted to a proper angle, the positioning block is clamped in the positioning groove corresponding to the positioning block under the action of the elastic piece, and the positioning of the handle is completed at the moment. In other words, the rotary holding device of the invention can enable a user to operate at an angle more in accordance with ergonomics, thereby achieving the effects of reducing fatigue and increasing comfort.

Preferably, the positioning slots are arranged at equal intervals relative to the center of the annular flange, so that the rear handle can be positioned at 0 degree, 90 degrees or minus 90 degrees.

Preferably, the push button has a pushed portion exposed on the top surface of the rear handle for the user to toggle with the thumb.

Preferably, the outer peripheral surface of the annular flange of the housing has two first guiding recesses and a first guiding protrusion disposed adjacent to and between the first guiding recesses, the front end of the rear handle has two second guiding protrusions and a second guiding recess disposed adjacent to and between the second guiding protrusions, the second guiding protrusions of the rear handle are embedded in the first guiding recesses of the annular flange, and the second guiding recess of the rear handle is embedded in the first guiding protrusion of the annular flange. Therefore, the rear handle can stably rotate relative to the shell.

Preferably, the rear handle has a blocking wall, the push button has a supported portion, the top end of the elastic member is supported by the blocking wall, and the bottom end of the elastic member is supported by the supported portion of the push button to provide elastic force to push the positioning block toward the annular flange.

Preferably, the rear handle is provided with a motor button located behind the positioning unit. Therefore, when the user presses the motor button with the index finger, the user can simultaneously toggle the push button with the thumb, thereby facilitating the operation of the user with one hand.

The details of the structure, features, assembly, and use of the rotary gripping apparatus provided herein will be set forth in the detailed description of the preferred embodiments which follows. However, it will be understood by those skilled in the art that the detailed description and specific examples, while indicating the preferred embodiment of the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention.

Drawings

Fig. 1 is a perspective view showing an electric hedge clipper to which the rotary holding device of the present invention is applied.

Fig. 2 is an exploded perspective view of the rotary grip device of the present invention.

Fig. 3 is a partial cross-sectional view of the rotary type gripping apparatus of the present invention, mainly showing the push button in the locked position.

Fig. 4 is similar to fig. 3 and is primarily shown with the push button in the unlocked position.

Fig. 5 is an end view of the rotary gripping apparatus of the present invention.

FIG. 6 is similar to FIG. 5 and primarily shows the rear handle rotated 90 degrees clockwise.

FIG. 7 is similar to FIG. 5 and shows primarily the rear handle rotated 90 degrees counterclockwise.

10: electric fence scissors

12, shear blade

14 front handle

16 motor button

18: battery

20: rotary holding device

30: shell

32: annular flange

34 positioning groove

36 first guide recess

38 first guide projection

40 rear handle

41: side cover

42: screw

43 bottom part

44 sleeve joint part

45 front connecting part

452 open at the top

454 bottom opening

456 barrier wall

46 rear connecting part

47: grip part

48 second guide projection

49 second guide recess

50 positioning unit

51 push button

52 pivoting part

53 pushed part

54 positioning block

55: lug

56 receiving part

57 connecting rod

58: elastic member

59 first shaft member

60 second shaft member

P1: locked position

P2-unlocked position

Detailed Description

The applicants first describe herein, throughout the specification and claims that follow, the directional terms used in the description and claims are used as reference to the orientation of the term in the drawings. Next, in the embodiments and drawings to be described below, the same reference numerals are used to designate the same or similar components or structural features thereof.

Referring to fig. 1, the rotary holding device 20 of the present invention is mainly applied to the electric hedge shears 10, and the electric hedge shears 10 are the prior art and the key point of the present invention, so the partial structure and the operation principle thereof will not be described herein. Referring to fig. 1 and 2, the rotary holding device 20 of the present invention includes a housing 30, a rear handle 40, and a positioning unit 50.

The housing 30 is provided with a motor (not shown) therein, and the motor is further connected to a cutting blade 12 at the front end of the housing 30, so that the cutting blade 12 can be driven by the motor. In addition, the housing 30 is spanned by a front handle 14, and two ends of the front handle 14 are fixed to two opposite side surfaces of the housing 30. As shown in fig. 2, the housing 30 has an annular flange 32 at the rear end thereof, and the annular flange 32 has three positioning grooves 34 on the outer peripheral surface thereof, wherein the three positioning grooves 34 are arranged at equal intervals with respect to the center of the annular flange 32, that is, two adjacent positioning grooves 34 are spaced apart by 90 degrees. As shown in fig. 3, the outer peripheral surface of the annular flange 32 further has two first guiding recesses 36 and a first guiding protrusion 38 adjacent to and between the first guiding recesses 36, and the first guiding recesses 36 and the first guiding protrusion 38 both extend annularly.

The rear handle 40 is formed by abutting two side covers 41 with a plurality of screws 42. As shown in fig. 3, the rear handle 40 has a bottom 43, a sleeve portion 44, a front connecting portion 45, a rear connecting portion 46 and a holding portion 47, wherein the sleeve portion 44 is integrally connected to the front end of the bottom 43, the inner peripheral surface of the sleeve portion 44 has two second guiding protrusions 48 and a second guiding recess 49 adjacent to and between the second guiding protrusions 48, the second guiding protrusions 48 and the second guiding recesses 49 both extend annularly, as shown in fig. 3 and 4, the bottom end of the front connecting portion 45 is integrally connected to the sleeve portion 44, the top and bottom ends of the front connecting portion 45 respectively have a top opening 452 and a bottom opening 454, the bottom end of the rear connecting portion 46 is integrally connected to the rear end of the bottom 43, and the front and rear ends of the holding portion 47 are integrally connected to the top end of the front connecting portion 45 and the top end of the rear connecting portion 46. As shown in fig. 3, the rear handle 40 is sleeved on the annular flange 32 of the housing 30 by the sleeve portion 44, and the second guiding protrusions 48 and the second guiding recesses 49 are embedded in the first guiding recesses 36 and the first guiding protrusions 38 of the housing 30, so that the rear handle 40 can rotate relative to the housing 30.

In addition, as shown in fig. 2 and 3, the holding portion 47 of the rear handle 40 is provided with a motor button 16 electrically connected to the motor (e.g., via a wire), and the motor can be started by pressing the motor button 16. Two batteries 18 are disposed side by side on the bottom 43 of the rear handle 40, and the motor is powered by the two batteries 18.

As shown in fig. 2 and fig. 3, the positioning unit 50 is located in front of the motor button 16 and has a push button 51, a positioning block 54, a connecting rod 57 and an elastic member 58 (here, a compression spring is taken as an example), wherein the push button 51 has a pivoting portion 52 and a pushed portion 53, the push button 51 is pivoted to the top end of the front connecting portion 45 of the rear handle 40 by the pivoting portion 52, and the pushed portion 53 is exposed to the top surface of the rear handle 40 through a top opening 452 (as shown in fig. 4), so that the push button 51 can pivot relative to the rear handle 40 when the pushed portion 53 is pushed by an external force; the positioning block 54 is located in the rear handle 40 and is adjacent to the annular flange 32 of the housing 30 through the bottom opening 454, the top surface of the positioning block 54 has a pair of lugs 55, and the rear side surface of the positioning block 54 has a supported portion 56; the connecting rod 57 is located in the rear handle 40, the top end of the connecting rod 57 is eccentrically pivoted to the pivoting part 52 of the push button 51 by using a first shaft member 59, and the bottom end of the connecting rod 57 is pivoted to the two lugs 55 of the positioning block 54 by using a second shaft member 60, so that the connecting rod 57 can be linked with the positioning block 54 when being driven by the push button 51; the elastic member 58 is located in the rear handle 40, a top end of the elastic member 58 abuts against one of the blocking walls 456 of the rear handle 40 as a support, and a bottom end of the elastic member 58 abuts against the abutting portion 56 of the positioning block 54, so that the elastic member 58 provides an elastic force to push the positioning block 54 toward the annular flange 32.

If the angle of the rear handle 40 is to be adjusted, the push button 51 is pushed to the unlocking position P2 shown in fig. 4, the push button 51 drives the positioning block 54 to separate from the originally clamped positioning slot 34 through the connecting rod 57, at this time, the rear handle 40 can be rotated to adjust the angle, until the angle is adjusted to a proper angle, the pushing force applied to the push button 51 is released, so that the positioning block 54 is clamped in the corresponding positioning slot 34 under the action of the elastic member 58, on the other hand, the positioning block 54 drives the push button 51 to return to the locking position P1 shown in fig. 3 through the connecting rod 57, and at this time, the positioning of the rear handle 40 is completed.

In actual operation, the user (for example, a right-handed person) grips the front handle with the left hand, grips the grip portion 47 of the rear handle 40 with the right hand, and presses the motor button 16 with the index finger to cause the motor to drive the cutting blade 12 to perform a cutting operation. If the angle of the rear handle 40 is to be adjusted, the push button 51 is pushed by the thumb to the unlock position P2 as shown in fig. 4, so as to adjust the angle of the rear handle 40 according to actual needs, for example, fig. 5 shows that the rear handle 40 is located at 0 degree, fig. 6 shows that the rear handle 40 rotates 90 degrees clockwise, fig. 7 shows that the rear handle 40 rotates 90 degrees counterclockwise, and when the angle is adjusted to a proper angle, the push force applied to the push button 51 is released, so as to complete the positioning of the rear handle 40. In other words, the user uses one hand to keep the whole electric hedge shears 10 in a balanced state, and then uses the other hand to control the motor to be turned on or off and adjust the angle of the rear handle 40, which not only helps the user to change the using state quickly, but also enables the user to operate at an angle more in accordance with the ergonomics, thereby achieving the effects of improving the working efficiency, reducing the fatigue feeling and increasing the comfort level.

The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are only exemplary embodiments of the present invention and are not intended to limit the present invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (6)

1. A rotary holding device for an electric hedge shears comprising:

a shell, the back end of the shell is provided with an annular flange, and the annular flange is provided with a plurality of positioning grooves;

a rear handle rotatably disposed on the annular flange of the housing; and

a positioning unit having a push button, a positioning block, a connecting rod and an elastic element, wherein the push button is pivoted to the rear handle and can pivot between a locked position and an unlocked position relative to the rear handle, the positioning block is disposed in the rear handle and adjacent to the annular flange of the housing, the connecting rod is disposed in the rear handle, one end of the connecting rod is eccentrically pivoted to the push button, the other end of the connecting rod is pivoted to the positioning block, so that the connecting rod can be driven by the push button to interlock the positioning block, when the push button is in the locked position, the positioning block is clamped in the positioning slot of the housing, so that the rear handle cannot rotate relative to the housing, when the push button is in the unlocked position, the positioning block is separated from the positioning slots, so that the rear handle can rotate relative to the housing, and the elastic element is disposed in the rear handle and pushes the positioning block toward the annular flange of the housing.

2. The rotary holding device for a power hedge shears according to claim 1, wherein the positioning slots are arranged at equal intervals with respect to the center of the annular flange.

3. The rotary holding device for electric hedge shears according to claim 1, wherein the push button has a pushed portion exposed to the top surface of the rear handle.

4. The rotary holding device for an electric hedge shears according to claim 1, wherein the outer peripheral surface of the annular flange of the housing has two first guiding recesses and a first guiding protrusion disposed adjacent between the first guiding recesses, the inner peripheral surface of the front end of the rear handle has two second guiding protrusions and a second guiding recess disposed adjacent between the second guiding protrusions, the second guiding protrusions of the rear handle are fitted into the first guiding recesses of the annular flange, and the second guiding recess of the rear handle is fitted into the first guiding protrusion of the annular flange.

5. The rotary holding device for electric hedge shears according to claim 1, wherein the rear handle has a blocking wall, the push button has a supported portion, one end of the elastic member abuts against the blocking wall, and the other end of the elastic member abuts against the supported portion of the push button.

6. The rotary holding device for electric hedge shears according to claim 1, further comprising a motor switch disposed at the rear handle and behind the positioning unit.

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