CN216505270U

CN216505270U - Electric knife structure

Info

Publication number: CN216505270U
Application number: CN202122772981.XU
Authority: CN
Inventors: 张奕旸; 林子译
Original assignee: Kewei Industry Co ltd
Current assignee: Kewei Industry Co ltd
Priority date: 2021-11-12
Filing date: 2021-11-12
Publication date: 2022-05-13
Anticipated expiration: 2031-11-12

Abstract

The electric knife structure of the utility model comprises: the knife comprises a knife body and a knife handle, wherein a driving unit and a driven unit are arranged in the knife handle. The driving unit comprises a first movable sleeve, the driven unit comprises a second movable sleeve, the cutter body is arranged on the second movable sleeve, and the driving unit is connected with the driven unit through a connecting rod, so that the driving unit can drive the second movable sleeve of the driven unit and the cutter body to reciprocate along an axial direction.

Description

Electric knife structure

Technical Field

The utility model relates to a cutter for cutting, in particular to an electric cutter structure.

Background

In order to increase the effectiveness of the tool in use, there are a number of electrically powered tools available on the market, and most of these tools are constructed with a blade that is directly connected to a drive means, such as a motor or a vibration unit. Although such a structure can provide a direct driving force for the blade, the output end of the driving device is easily distorted or even damaged when the blade is pressed. There is a need to improve upon this problem.

Disclosure of Invention

The utility model mainly aims to provide an electric knife structure which is stable in structure, easy to maintain and capable of protecting a driving device from being damaged easily.

In order to achieve the above main object, an electric knife structure of the present invention includes: a knife body and a knife handle, wherein a driving unit and a driven unit are arranged in the knife handle. The knife body is arranged on the driven unit, and the driving unit is connected with the driven unit through a connecting rod, so that the driving unit can drive the knife body of the driven unit to move back and forth along an axial direction.

Based on the structure, the driving unit and the driven unit are pivoted by the connecting rod, so that the pressed pressure or twisted force of the knife body at the end of the driven unit can be absorbed by the connecting rod when the knife body is pressed, and the pressed pressure or twisted force cannot be directly transmitted to the output shaft of the motor to cause damage to the output shaft.

Preferably, the driving unit comprises a first movable sleeve, the driven unit comprises a second movable sleeve, and the first movable sleeve and the second movable sleeve are connected through the connecting rod.

Preferably, the driving unit includes a screw, and the screw is provided with two opposite threads.

Preferably, the driving unit includes two rolling members respectively disposed at one side of the two threads of the screw, and the two rolling members can roll along the corresponding threads.

Drawings

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

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

Fig. 3 is an exploded perspective view of the drive unit of the present invention.

Fig. 4 is an exploded perspective view of the driven unit of the present invention.

Fig. 5 is a cross-sectional view taken along line 5-5 of fig. 1.

Fig. 6 is a cross-sectional view taken along line 6-6 of fig. 1.

FIG. 7 is a cross-sectional view of another embodiment of the screw and the first locking bushing of the present invention, similar to FIG. 6.

Wherein the reference numerals are:

1: knife handle

2, knife body

3: switch

4: power supply

10 drive unit

110 motor

111 output shaft

120 screw rod

121: screw thread

130 first active cannula

131 through the hole

132 pivot hole

140 first fixed sleeve

141 guide groove

150 rolling member

Driven unit (20)

210 blade holder

220 second movable sleeve

221 pivoting hole

230 second fixed sleeve

30: connecting rod

Detailed Description

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 the drawings to be described below, the same element numbers denote the same or similar elements or structural features thereof.

Referring to fig. 1 to 6, the electric knife structure of the present invention includes:

the multifunctional knife comprises a knife handle 1 and a knife body 2, wherein the knife handle 1 is provided with a switch 3, a power source 4, a driving unit 10 and a driven unit 20 are arranged in the knife handle 1, and the knife body 2 is arranged on the driven unit 20. In the present embodiment, the power source 4 is a battery, but the power source may be a wire directly connected to external power.

The drive unit 10 includes:

a motor 110 disposed in the handle, wherein an output shaft 111 is disposed at one end of the motor 110.

A screw 120, which is disposed on the output shaft 111 of the motor and can rotate along with the output shaft, and two opposite screw threads 121 are disposed on the screw 120.

A first movable sleeve 130, which is sleeved on the screw rod 120, and both sides of the first movable sleeve are respectively provided with a through hole 131.

A first fixed sleeve 140 sleeved outside the first movable sleeve 130, wherein one end of the first fixed sleeve 140 is fixedly connected to the motor 110. Two long guide grooves 141 are disposed at two sides of the first fixed sleeve 140 corresponding to the two through holes 131 of the first movable sleeve, and the long axis direction of the guide grooves 141 is the same as the axial direction of the motor output shaft 111.

Two rolling members 150 respectively disposed at one side of the two threads 121 of the screw rod, the two rolling members 150 can roll along the corresponding threads 121, in this embodiment, the two rolling members 150 are two balls, but not limited thereto. One side of the two rolling members 150 is attached to the screw thread 121 of the screw, and the other side protrudes out of the first movable sleeve 130 through the through hole 131 of the first movable sleeve, and the protruding portion of the two rolling members 150 is limited in the guiding groove 141 of the first fixed sleeve.

The driven unit 20 includes:

a blade fixing member 210 to which one end of the blade 2 is fixed, the blade fixing member 210.

A second movable sleeve 220, which is sleeved on the blade fixing member 210 and is combined and fixed with the blade fixing member 210.

A second fixed sleeve 230, which is sleeved outside the second movable sleeve 220 and fixed in the knife handle 1.

The driving unit 10 is pivotally connected to the driven unit 20 by a link 30, so that the second movable sleeve 220 of the driven unit can be driven by the first movable sleeve 130 of the driving unit. In this embodiment, one end of the first movable sleeve 130 of the driving unit 10 is provided with a pivot hole 132, and one end of the second movable sleeve 220 is also provided with a pivot hole 221, and a connecting rod 30 is respectively pivoted to the pivot hole 132 of the first movable sleeve and the pivot hole 221 of the second movable sleeve. Through the structure, the first movable sleeve 130 and the second movable sleeve 220 can be interlocked, and respective moving spaces of the first movable sleeve 130 and the second movable sleeve 220 can be kept. In other words, the second movable sleeve 220 does not directly affect the first movable sleeve 130 if it has a yaw about up, down, left, or right.

When the structure of the utility model is used, the using mode is the same as that of a common cutter, a user holds the cutter handle 1 by hand, the switch 3 is turned on, and the output shaft 111 of the motor 110 rotates and drives the screw rod 120 to rotate. The rotation of the screw 120 moves the two rolling members 150 and pushes the first movable sleeve 130 to move, but because the movable range of the two rolling members 150 is limited in the corresponding guide grooves 141, the first movable sleeve 130 can move back and forth only in an axial direction, which is coaxial with the output shaft 111 of the motor. The first movable sleeve 130 is linked with the second movable sleeve 220 through the connecting rod 30, so as to drive the second movable sleeve 220 to reciprocate. The blade fixing member 210 for fixing the blade 2 is fixedly connected to the second movable sleeve 220, so that it can move along with the second movable sleeve 220, thereby achieving the function of reciprocating the blade 2.

The utility model has the advantages that: because the driving unit 10 and the driven unit 20 are pivotally connected by a link 30, when the blade at the end of the driven unit 20 is pressed, the pressed pressure or twisting force can be absorbed by the link 30, and will not be directly transmitted to the output shaft 111 of the motor to cause damage to the output shaft.

In addition, because the driving unit and the driven unit are separated, the units do not need to be disassembled and replaced in the whole group during maintenance, and the maintenance is easy.

In addition, it should be noted that two rolling members 150 and two threads 121 are disposed on the screw rod 120 in the above embodiment, but a rolling member 150 and a thread 121 may also be used, as shown in fig. 7. The use of two rollers and two threads may be well balanced, but the use of one roller and one thread may also cause the first moveable sleeve to reciprocate.

In addition, in the embodiment, the blade holder 210 and the second movable sleeve 220 are separated into two elements because of the convenience of assembly, and the blade holder 210 and the second movable sleeve 220 can also be combined into a single element. That is, the blade 2 can be directly fixed to the second movable sleeve 220. The second fixing sleeve 230 can also be combined with the tool shank 1 to form a part of the tool shank 1. Similarly, the first fixing socket may be integrated with the shank.

Claims

1. An electric knife structure, comprising:

blade and handle of a knife, be equipped with drive unit in this handle of a knife and by drive unit, this drive unit includes:

a motor having an output shaft;

the screw rod is arranged on the output shaft of the motor and can rotate along with the output shaft, and the screw rod is provided with threads;

the first movable sleeve is sleeved on the screw rod, and one side of the first movable sleeve is provided with a through hole;

the first fixed sleeve is fixedly arranged in the cutter handle and sleeved outside the first movable sleeve, and one side of the first fixed sleeve is provided with a long guide groove corresponding to the through hole of the first movable sleeve;

the rolling pieces are respectively arranged on one side of the screw thread, the rolling pieces can roll along the corresponding screw thread, one side of each rolling piece is attached to the screw thread, the other side of each rolling piece protrudes out of the first movable sleeve through the through hole of the first movable sleeve, and the protruding part of each rolling piece is limited in the guide groove of the first fixed sleeve;

the driven unit includes:

the knife body fixing piece is arranged at one end of the knife body;

the second movable sleeve is sleeved on the cutter body fixing piece and is fixedly combined with the cutter body fixing piece;

the first movable sleeve is pivoted with the second movable sleeve through a connecting rod, so that the second movable sleeve can be driven by the first movable sleeve.

2. The electric knife structure of claim 1, wherein the driven unit comprises: the second fixed sleeve is sleeved outside the second movable sleeve and is fixed in the knife handle.

3. The structure of claim 2, wherein the blade mount is integrated with the second movable sleeve as a single component.

4. The structure of claim 3, wherein the first movable sleeve has a pivot hole at one end thereof, and the second movable sleeve has a pivot hole at one end thereof, such that the connecting rod is pivotally connected to the pivot hole of the first movable sleeve and the pivot hole of the second movable sleeve respectively.

5. The electric knife structure of claim 4, wherein the handle is provided with a switch and the handle is provided with a power source.

6. An electric knife structure, comprising:

a motor having an output shaft;

the screw rod is arranged on an output shaft of the motor and can rotate along with the output shaft, and two threads in opposite directions are arranged on the screw rod;

the first fixed sleeve is fixedly arranged in the cutter handle and sleeved outside the first movable sleeve, and two sides of the first fixed sleeve are respectively provided with a long guide groove corresponding to the through hole of the first movable sleeve;

two rolling parts, which are respectively arranged at one side of the screw thread, each rolling part can roll along the corresponding screw thread, one side of each rolling part is attached to the screw thread, the other side protrudes out of the first movable sleeve through the through hole of the first movable sleeve, and the protruding part of each rolling part is limited in the guide groove of the first fixed sleeve;

the driven unit includes:

the knife body fixing piece is arranged at one end of the knife body;

7. The electric knife structure of claim 6, wherein the driven unit comprises a second fixed sleeve sleeved outside the second movable sleeve and fixed in the knife handle.

8. The structure of claim 7, wherein the blade mount is integrated with the second movable sleeve as a single component.

9. The structure of claim 8, wherein the first movable sleeve has a pivot hole at one end thereof, and the second movable sleeve has a pivot hole at one end thereof, such that the connecting rod is pivotally connected to the pivot hole of the first movable sleeve and the pivot hole of the second movable sleeve respectively.

10. The electric knife structure of claim 9, wherein the handle is provided with a switch and the handle is provided with a power source.