CN112492998A

CN112492998A - Shearing tool

Info

Publication number: CN112492998A
Application number: CN202011369818.2A
Authority: CN
Inventors: 黄海彬; 施宏敏
Original assignee: Jiangsu Dongcheng Tools Technology Co Ltd
Current assignee: Jiangsu Dongcheng Tools Technology Co Ltd
Priority date: 2020-11-30
Filing date: 2020-11-30
Publication date: 2021-03-16

Abstract

The invention relates to a shearing tool, which comprises a shell, a driving component arranged in the shell and a cutter head component connected with the driving component, wherein the driving component drives the cutter head component to do shearing motion; the driving component comprises a motor, a connecting seat and an output gear, the cutter head component comprises a first cutter head and a second cutter head which are pivoted on the connecting seat, the rear end of the first cutter head is internally meshed with the output gear, the rear end of the second cutter head is externally meshed with the output gear, and the motor drives the output gear to rotate so as to drive the first cutter head and the second cutter head to simultaneously do shearing rotation or open motion in a back direction. The output gear of the invention drives the two cutter heads to move simultaneously, the shearing stroke is small, and the shearing efficiency is higher; and the first cutter head is internally meshed with the output gear, the second cutter head is externally meshed with the output gear, and the inner gear and the outer gear are meshed at two sides of the output gear, so that the two cutter heads can move simultaneously in a relatively compact structure.

Description

Shearing tool

[ technical field ] A method for producing a semiconductor device

The invention relates to a shearing tool, in particular to a shearing tool used in the field of garden pruning and the like.

[ background of the invention ]

The cutting tool is widely used for pruning branches, and the commonly used cutting tool adopts a single-blade driving mode, and the structure can be referred to the Chinese patent No. 200920232508.9 published on No. 09/01 2010, which discloses a single-blade driven electric pruning shear.

The improvement of the structure can be seen in chinese patent No. 202010416265.5, which is disclosed in 14/08/2020, and discloses a double-blade transmission mechanism, which comprises a housing assembly, a blade assembly arranged at the front end of the housing assembly, and a transmission assembly arranged in the housing assembly, wherein the blade assembly comprises an upper blade and a lower blade, the tail ends of the upper blade and the lower blade are respectively provided with an upper blade gear and a lower blade gear, the transmission assembly comprises a driving bevel gear and an upper driven bevel gear and a lower driven bevel gear which are arranged at the upper end and the lower end of the driving bevel gear and are meshed with the driving bevel gear, the upper driven bevel gear and the lower driven bevel gear are connected through a driven bevel gear shaft, the upper driven bevel gear is rigidly connected with an upper spur gear, the lower driven bevel gear is rigidly connected with a lower spur gear, and the upper spur gear and the lower spur gear are respectively meshed with the upper blade gear and the lower blade gear. The structure drives the two blades to rotate simultaneously, and compared with the traditional method that only one movable blade is used for shearing, the shearing speed is high and the efficiency is high; however, because the two blades are provided with the respective driven bevel gear and the spur gear, the cutter head part has a complex structure, occupies a larger volume and has higher cost.

Accordingly, there is a need for an improved shearing tool that overcomes the deficiencies of the prior art.

[ summary of the invention ]

In view of the deficiencies of the prior art, it is an object of the present invention to provide a shear tool that is simple in construction and low in cost.

The invention solves the problems of the prior art by adopting the following technical scheme: a shearing tool comprises a shell, a driving component arranged in the shell and a cutter head component connected with the driving component, wherein the cutter head component protrudes out of the front end of the shell, and the driving component drives the cutter head component to do shearing motion; the driving assembly comprises a motor, a connecting seat arranged at the front end of the motor and an output gear driven by the motor, the output gear is installed on the connecting seat, the cutter head assembly comprises a first cutter head and a second cutter head which are pivoted on the connecting seat, the rear end of the first cutter head is internally engaged with the output gear, the rear end of the second cutter head is externally engaged with the output gear, the motor drives the output gear to rotate so as to drive the first cutter head and the second cutter head to simultaneously do shearing rotation or open motion back to back.

The further improvement scheme is as follows: the first cutter head comprises a first connecting part connected with the output gear, a first shearing part positioned on the opposite side of the first connecting part, a movable groove inwards recessed from the surface of the first connecting part and an internal gear formed in the movable groove, and the output gear protrudes into the movable groove and is meshed with the internal gear.

The further improvement scheme is as follows: the second cutter head comprises a second connecting part connected with the output gear, a second cutting part positioned on the opposite side of the second connecting part and an outer gear formed at the end part of the second cutting part, and the output gear is meshed with the outer gear.

The further improvement scheme is as follows: the inner gear and the outer gear are located on two sides of the output gear, and the output gear rotates to drive the inner gear and the outer gear to move in the reverse direction.

The further improvement scheme is as follows: the cutter head assembly comprises a blade connecting shaft which is connected with the first cutter head and the second cutter head, the blade connecting shaft penetrates through the first cutter head and the second cutter head and is fixed on the connecting seat, and the first cutter head and the second cutter head pivot around the blade connecting shaft.

The further improvement scheme is as follows: the driving assembly comprises a transmission part positioned between the motor and the connecting seat, a first bevel gear connected to the front end of the transmission part and a second bevel gear meshed with the first bevel gear, the first bevel gear is contained in the connecting seat, and the second bevel gear, the first cutter head and the second cutter head are positioned on two sides of the connecting seat.

The further improvement scheme is as follows: the connecting seat comprises an accommodating cavity for accommodating the first bevel gear, a supporting plate connected to the front end of the accommodating cavity and an opening formed at the joint of the accommodating cavity and the supporting plate, the opening is arranged towards the second bevel gear, and the first bevel gear protrudes out of the opening and is meshed with the second bevel gear.

The further improvement scheme is as follows: the output gear extends through the support plate and is secured with the second bevel gear via a nut.

The further improvement scheme is as follows: the centers of the motor, the transmission part and the first bevel gear are positioned on the same axis X, the centers of the second bevel gear and the output gear are positioned on the same axis Y, and the axis Y is perpendicular to the axis X.

The further improvement scheme is as follows: the transmission part is a planetary gear speed reducing mechanism.

Compared with the prior art, the invention has the following beneficial effects: the output gear drives the two cutter heads to move simultaneously, so that the shearing stroke is small, and the shearing efficiency is higher; and the first cutter head is internally meshed with the output gear, the second cutter head is externally meshed with the output gear, the inner gear and the outer gear are meshed with two sides of the output gear, and the two cutter heads can move simultaneously in a relatively compact structure.

[ 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 schematic overall view of a shearing tool of the present invention;

FIG. 2 is a schematic illustration of the drive assembly and bit assembly of the shear tool of FIG. 1;

FIG. 3 is a schematic view of the closed condition of the cutter head assembly shown in FIG. 2;

FIG. 4 is an exploded schematic view of the drive assembly and bit assembly of FIG. 2;

FIG. 5 is an exploded view from another angle of the drive assembly and the cutter head assembly shown in FIG. 2;

fig. 6 is a cross-sectional view of the drive assembly and the cutter head assembly shown in fig. 2.

[ detailed description ] embodiments

The present invention will be described in further detail with reference to the accompanying drawings and embodiments.

Referring to fig. 1, the embodiment of the present invention relates to a cutting tool 100, the cutting tool 100 includes a housing 1, a driving assembly installed in the housing 1, a cutter head assembly protruding from the front end of the housing 1, a battery pack 101 connected to the rear end of the housing 1, and a switch 102 installed on the housing 1, the cutter head assembly and the battery pack 101 are located at the front and rear sides of the housing 1, one side of the housing 1 near the battery pack 101 forms an elongated holding portion 103, one side of the housing 1 near the cutter head assembly is provided with a protection portion 104 protruding outwards, and the switch 102 is located in the protection portion 104; the cutter head assembly is connected to the driving assembly, and when the operating personnel use, the switch 102 is pressed to start the driving assembly and drive the cutter head assembly to do reciprocating shearing motion so as to open or close the cutter head assembly to operate branches needing to be trimmed.

Referring to fig. 2 to 6, the driving assembly includes a motor 2, a transmission portion 3 connected to a front end of the motor 2, a connecting seat 4 connected to a front end of the transmission portion 3, a first bevel gear 5 driven by the transmission portion 3, a second bevel gear 6 engaged with the first bevel gear 5, and an output gear 7 connected to the second bevel gear 6, wherein the transmission portion 3 is located between the motor 2 and the connecting seat 4, the first bevel gear 5 is connected to a front end of the transmission portion 3 and disposed in the connecting seat 4, centers of the motor 2, the transmission portion 3, and the first bevel gear 5 are located on a same axis X, centers of the second bevel gear 6 and the output gear 7 are located on a same axis Y, and the axis Y is perpendicular to the axis X due to the engagement of the second bevel gear 6 with the first bevel gear 5; the motor 2, the transmission part 3, the first bevel gear 5 and the second bevel gear 6 are connected in sequence and finally transmit force to the output gear 7.

In the present embodiment, the power transmission portion 3 is a planetary gear reduction mechanism.

Referring to fig. 5 and 6, the connecting seat 4 includes a receiving cavity 41 for accommodating the first bevel gear 5, a supporting plate 42 connected to a front end of the receiving cavity 41, and an opening 43 formed at a connection portion between the receiving cavity 41 and the supporting plate 42, wherein the opening 43 is disposed toward the second bevel gear 6, and the first bevel gear 5 protrudes out of the opening 43 and engages with the second bevel gear 6.

In this embodiment, the first bevel gear 5 includes a connecting section 51 connected to the transmission portion 3 and a bevel gear section 52 protruding forward from a front end of the connecting section 51, the connecting section 51 is located in the accommodating cavity 41, the bevel gear section 52 is exposed to the opening 43 and engaged with the second bevel gear 6, a diameter of the bevel gear section 52 is larger than a diameter of the connecting section 51, the driving assembly includes a bearing 81 sleeved on the connecting section 51, an outer ring of the bearing 81 abuts against an inner wall of the accommodating cavity 41, and an inner ring is fixed on an outer periphery of the connecting section 51.

Referring to fig. 4 to 6, the support plate 42 is provided with a first connecting hole therethrough, the second bevel gear 6 is provided with a second connecting hole 61 corresponding to the first connecting hole, and the output gear 7 extends through the first connecting hole and the second connecting hole 61 and is fixed with the second bevel gear 6 via the nut 9.

Referring to fig. 2 and 3, the cutter head assembly includes a first cutter head 10 and a second cutter head 20 engaged with the output gear 7, the first cutter head 10, the second cutter head 20 and the second taper tooth 6 are located at two sides of the connecting seat 4, in this embodiment, the rear end of the first cutter head 10 is engaged with the output gear 7, the rear end of the second cutter head 20 is engaged with the output gear 7, and the motor 2 drives the output gear 7 to rotate, so as to drive the first cutter head 10 and the second cutter head 20 to perform shearing rotation or opening movement back to back at the same time.

Specifically, the first tool bit 10 comprises a first connecting part 11 connected with the output gear 7, a first shearing part 12 positioned at the opposite side of the first connecting part 11, a movable groove 13 recessed inwards from the surface of the first connecting part 11 and an inner gear 14 formed in the movable groove 13, wherein the output gear 7 protrudes into the movable groove 13 and is meshed with the inner gear 14; the second cutter head 20 includes a second connection portion 21 connected to the output gear 7, a second cutting portion 22 located at the opposite side of the second connection portion 21, and an outer gear 23 formed at the end of the second cutting portion 22, the output gear 7 also being engaged with the outer gear 23; the second tool tip 20 and the first tool tip 10 are located on different planes and do not interfere with each other. In the present embodiment, the internal gear 14 and the external gear 23 are located on both sides of the output gear 7, and the output gear 7 rotates to bring the internal gear 14 and the external gear 23 into reverse motion. The output gear 7 of the invention drives two cutter heads to move simultaneously, the shearing stroke is small, and the shearing efficiency is higher; and the first cutter head 10 is internally meshed with the output gear 7, the second cutter head 20 is externally meshed with the output gear 7, and the internal gear 14 and the external gear 23 are meshed with two sides of the output gear 7, so that the two cutter heads can move simultaneously in a relatively compact structure.

Referring to fig. 4 to 6, the cutter head assembly includes a blade connecting shaft 30 connecting the first cutter head 10 and the second cutter head 20, a supporting plate 42 is provided with a third connecting hole 421, the blade connecting shaft 30 sequentially passes through the first cutter head 10, the second cutter head 20 and the third connecting hole 421, and is fixed on the supporting plate 42 through a lock nut 31; the first and

second cutter heads

10 and 20 pivot about the blade connecting shaft 30 and bring the first and

second cutting portions

12 and 22 open or closed for cutting work.

The output gear 7 of the invention drives two cutter heads to move simultaneously, the shearing stroke is small, and the shearing efficiency is higher; and the first cutter head 10 is internally meshed with the output gear 7, the second cutter head 20 is externally meshed with the output gear 7, and the internal gear 14 and the external gear 23 are meshed with two sides of the output gear 7, so that the two cutter heads can move simultaneously in a relatively compact structure.

The present invention is not limited to the above-described embodiments. It will be readily appreciated by those skilled in the art that numerous other alternatives to the shearing tool of the present invention are possible without departing from the spirit and scope of the invention. The protection scope of the present invention is subject to the content of the claims.

Claims

1. A shearing tool comprises a shell, a driving component arranged in the shell and a cutter head component connected with the driving component, wherein the cutter head component protrudes out of the front end of the shell, and the driving component drives the cutter head component to do shearing motion; the method is characterized in that: the driving assembly comprises a motor, a connecting seat arranged at the front end of the motor and an output gear driven by the motor, the output gear is installed on the connecting seat, the cutter head assembly comprises a first cutter head and a second cutter head which are pivoted on the connecting seat, the rear end of the first cutter head is internally engaged with the output gear, the rear end of the second cutter head is externally engaged with the output gear, the motor drives the output gear to rotate so as to drive the first cutter head and the second cutter head to simultaneously do shearing rotation or open motion back to back.

2. The shear tool of claim 1, wherein: the first cutter head comprises a first connecting part connected with the output gear, a first shearing part positioned on the opposite side of the first connecting part, a movable groove inwards recessed from the surface of the first connecting part and an internal gear formed in the movable groove, and the output gear protrudes into the movable groove and is meshed with the internal gear.

3. The shear tool of claim 2, wherein: the second cutter head comprises a second connecting part connected with the output gear, a second cutting part positioned on the opposite side of the second connecting part and an outer gear formed at the end part of the second cutting part, and the output gear is meshed with the outer gear.

4. The shear tool of claim 3, wherein: the inner gear and the outer gear are located on two sides of the output gear, and the output gear rotates to drive the inner gear and the outer gear to move in the reverse direction.

5. The shear tool of claim 1, wherein: the cutter head assembly comprises a blade connecting shaft which is connected with the first cutter head and the second cutter head, the blade connecting shaft penetrates through the first cutter head and the second cutter head and is fixed on the connecting seat, and the first cutter head and the second cutter head pivot around the blade connecting shaft.

6. The shear tool of claim 1, wherein: the driving assembly comprises a transmission part positioned between the motor and the connecting seat, a first bevel gear connected to the front end of the transmission part and a second bevel gear meshed with the first bevel gear, the first bevel gear is contained in the connecting seat, and the second bevel gear, the first cutter head and the second cutter head are positioned on two sides of the connecting seat.

7. The shear tool of claim 6, wherein: the connecting seat comprises an accommodating cavity for accommodating the first bevel gear, a supporting plate connected to the front end of the accommodating cavity and an opening formed at the joint of the accommodating cavity and the supporting plate, the opening is arranged towards the second bevel gear, and the first bevel gear protrudes out of the opening and is meshed with the second bevel gear.

8. The shear tool of claim 7, wherein: the output gear extends through the support plate and is secured with the second bevel gear via a nut.

9. The shear tool of claim 8, wherein: the centers of the motor, the transmission part and the first bevel gear are positioned on the same axis X, the centers of the second bevel gear and the output gear are positioned on the same axis Y, and the axis Y is perpendicular to the axis X.

10. The shear tool of claim 6, wherein: the transmission part is a planetary gear speed reducing mechanism.