WO2024082409A1

WO2024082409A1 - Electric tool capable of limiting turning of working component

Info

Publication number: WO2024082409A1
Application number: PCT/CN2022/138844
Authority: WO
Inventors: 袁崔华
Original assignee: 袁崔华
Priority date: 2022-10-19
Filing date: 2022-12-14
Publication date: 2024-04-25
Also published as: CN218137835U

Abstract

An electric tool capable of limiting the turning of a working component, comprises: a holding component (10), a driving component (20), and a working component (30), wherein the electric tool has provided therein a turning control assembly; the working component has provided thereon a mounting guide column (32) docked with the driving component, an end portion of the mounting guide column being designed with a stepped structure (321); when the working component can only perform unidirectional driving operation, the stepped structure has a semi-stepped structure, and a protruding portion (322) thereof abuts against the turning control assembly after the working component and the driving component are assembled, preventing the back-and-forth motion thereof, and limiting the working component to only be able to perform unidirectional operation; and when the working component can perform bidirectional driving operation, the stepped structure is of a fully-stepped structure, allowing the steering control assembly to smoothly slide over the stepped structure. The electric tool is able to limit a working component to unidirectional or bidirectional operation without major changes to the structure of existing electric tools, avoiding safety accidents caused by misuse of the electric tool during operation.

Description

An electric tool capable of limiting the direction of working of a working part

Technical Field

The utility model relates to the technical field of electric tools, and in particular to an electric tool in which the direction of the motor can be controlled to allow bidirectional rotation or to limit unidirectional rotation according to the working properties of a working component.

Background technique

With the continuous improvement of social development level, work efficiency has played an important role in it, and the use of advanced tools is one of the important reasons for promoting the continuous improvement of work efficiency. Whether in the field of industrial production or in the field of personal production (DIY), power tools have been widely used. Especially with the development of the lithium battery industry, the application scenarios of portable power tools are constantly expanding. While power tools are widely popularized and applied, the safety of tool use has become one of the most critical considerations in the design of power tools. In order to provide convenience in the use of tools and reduce costs, general power tools include three parts, grip parts (including battery modules), drive parts (including drive motors) and working parts. The working parts and drive parts are generally designed as detachable structures. In this way, when users need to perform different operations, they only need to replace the working parts without purchasing different complete machines. This can reduce user costs and facilitate the promotion and use of tools. For some working parts, such as electric screwdrivers, they rotate forward when tightening screws, but need to rotate reversely when removing screws. Therefore, in order to facilitate the use of tools, control components are often designed in the driving components to control the rotation direction of the motor according to different work requirements; however, for some working parts, such as electric chain saws, they can only operate in one direction. If they are reversed, the chain will fall off, which may easily cause safety accidents during use. Therefore, it is necessary to limit the forward and reverse rotation of the motor according to the working nature of different working parts to avoid safety accidents caused by misoperation during work.

Utility Model Content

In view of the above-mentioned requirements for the use of electric tools in applications, the purpose of the utility model is to provide an electric tool with a controllable motor direction that can control the bidirectional rotation of the motor or limit the motor to unidirectional rotation according to the working properties of the working parts, so as to avoid safety accidents caused by misoperation during the use of the electric tool.

To achieve the purpose of the utility model, the utility model proposes an electric tool capable of limiting the working direction of a working part, comprising a gripping part, a driving part and a working part fixedly connected to the driving part, wherein a steering control assembly is provided in the electric tool, wherein the steering control assembly comprises a steering button and a switch steering column, wherein the steering button comprises a button body and an annular structure with an opening protruding from the side of the button body, wherein the switch steering column is placed in the opening of the annular structure, and the switch steering column is driven by the steering button to move back and forth; wherein the working part is provided with an installation guide column docked and assembled with the driving part, wherein a step structure is designed at an end of the installation guide column, and when the working part can only be driven to work in one direction, the step structure is arranged as a semi-step structure along the width direction of the end, and the protruding part of the semi-step structure abuts against the steering control assembly after the working part is assembled with the driving part to prevent the steering control assembly from moving back and forth, thereby limiting the working part to work in one direction only; and when the working part can be driven to work in two directions, the step structure is arranged as a full-step structure along the width direction of the end, so that the steering control assembly can slide smoothly over the step structure.

Preferably, after the working component and the driving component are assembled, the protruding portion of the semi-step structure abuts against the switch steering column of the steering control assembly to prevent it from moving back and forth.

More preferably, after the working component and the driving component are assembled, the protruding portion of the semi-step structure abuts against the annular structure of the steering button of the steering control assembly to prevent it from moving back and forth.

More preferably, the side of the semi-step structure is designed with a guiding slope structure.

More preferably, the installation guide column is located on the bottom surface of the working component and is arranged in a horizontal structure.

More preferably, the electric tool is a portable battery-driven electric tool or an external power source-driven electric tool.

More preferably, the housing of the holding component and the driving component is an integrally formed housing.

More preferably, the bottom of the gripping component has a battery containing structure.

The beneficial effect of the utility model is that the utility model can limit the working direction of the working part. At the end of the installation guide column of the working part, a half-step or a full-step structure is designed according to the use nature of the working part, so as to block or allow the movement of the switch toggle column to realize the unidirectional or bidirectional operation of the working part; this design can achieve the limitation of the unidirectional or bidirectional operation of the working part without making major structural changes to the existing power tool, thereby avoiding safety accidents caused by misoperation during the operation of the power tool.

BRIEF DESCRIPTION OF THE DRAWINGS

The above and other purposes, features and advantages of the present invention will become apparent through the following detailed description in conjunction with the accompanying drawings, wherein:

FIG1 is a schematic diagram of the three-dimensional structure of an electric tool capable of limiting the working direction of a working component according to an embodiment of the utility model;

FIG2 is a schematic structural diagram of a driving component and a working component of the electric tool of FIG1 ;

FIG3 is a schematic diagram showing the assembly structure of the steering button and the switch steering column of the electric tool of the present invention;

FIG4 is a schematic structural diagram of a guide column for installing a working component of an electric tool according to an embodiment of the present invention;

FIG5 is a schematic structural diagram of a steering button of an electric tool of the present invention;

FIG6 is a half-section schematic diagram of the assembly structure of the driving component and the working component of the electric tool according to another embodiment of the present invention;

FIG. 7 is a schematic structural diagram of the working components of the electric tool of FIG. 6 .

Detailed ways

The structural features and advantages of the utility model are described in detail as follows in conjunction with the accompanying drawings.

Referring to FIG1 , a schematic diagram of the structure of an electric tool capable of limiting the working direction of a working part according to an embodiment of the utility model is shown. The electric tool comprises a gripping part 10, a driving part 20 and a working part 30 fixedly connected to the driving part. A steering control assembly is provided in the electric tool. The steering control assembly comprises a steering button 22 and a switch steering column 24. Referring to FIG5 , the steering button 22 comprises a button body 221 and an annular structure 224 with an opening protruding from the side of the button body 221. A switch steering column 24 is provided inside the electric tool. The switch steering column 24 is placed in the opening of the annular structure 224, and its top protrudes a set distance. The steering button 22 can move back and forth along the Z direction in FIG2 , and drive the switch steering column 24 to move back and forth. The switch steering column 24 is connected to the rotation control part of the motor, thereby realizing the forward or reverse rotation of the motor and driving the forward or reverse operation of the working part. The specific design principle of this part is the prior art, and this application will not elaborate on it. The working part 30 is provided with an installation guide column 32 that is assembled with the driving part. Referring to FIG2 As shown in FIG. 4 , the end of the installation guide column 32 is designed with a step structure 321. In one embodiment of the present utility model, when the working component can only be driven in one direction, such as a chain saw, the step structure 321 is set as a semi-step structure along the width direction of the end, that is, at the end of the installation guide column 32, along the width direction, a part is the step structure 321, and the remaining part is a protruding part 322 relative to the step structure 321. When the working component is assembled with the driving component, the protruding part 322 of the end of the installation guide column 32 relative to the step structure 321 is The switch steering column 24 abuts to prevent the movement of the switch steering column, thereby limiting the working component to only one-way work; when the working component can be driven to work in both directions, such as an electric screwdriver (i.e., an electric screwdriver), as shown in Figures 6 and 7, the end of the installation guide column 32' on the working component 30' is designed with a step structure 321', and the step structure 321' is set to a full step structure along the width direction of the end. The switch steering column 24 can smoothly slide over the step structure 321' and move back and forth driven by the turn button 22 to achieve two-way drive work.

In a preferred embodiment, in order to facilitate the protruding portion 322 of the semi-step structure 321 to abut against the side of the switch steering column 24, as shown in FIG. 4, a guiding inclined surface structure 3222 is designed on the side of the protruding portion 322.

In this embodiment, in order to simplify the design and avoid changing the overall structure of the existing power tool as much as possible and take into consideration the design space, the protruding portion of the semi-step structure at the end of the guide column 32 is used to limit the movement of the switch dial column 24 to achieve unidirectional operation. It should be understood that according to the design concept of the present application, the movement of the steering button 22 can also be directly limited. At this time, the protruding portion of the semi-step structure at the end of the guide column 32 can be used to block the side of the annular structure 224 of the steering button 22 to prevent its movement, which can also achieve the purpose of the present application.

In another preferred embodiment, the installation guide column 32 is designed on the bottom surface of the working part and is arranged in a horizontal structure, which is easy to install and adapts to the design of the steering button 22 and the switch dial column 24 of the currently commonly used power tools. There is no need to change the existing design of the power tool, which is conducive to the rapid application of the technical solution of the present application on the power tool.

In another preferred embodiment, the electric tool may be a portable battery-driven electric tool or an external power-driven electric tool.

In another preferred embodiment, the housing of the holding component and the driving component is an integrally formed housing, thereby simplifying the installation process of the power tool and ensuring the positioning accuracy between internal parts.

In another preferred embodiment, the bottom of the gripping component has a battery containing structure (not shown) to facilitate installation and removal of the battery.

The utility model discloses an electric tool capable of limiting the direction of working of a working part. At the end of a guide column for installing the working part, a half-step or a full-step structure is designed according to the use nature of the working part, so as to block or allow the movement of the switch toggle column to realize unidirectional or bidirectional operation of the working part. This design can achieve the limitation of unidirectional or bidirectional operation of the working part without making major structural changes to the existing electric tool, thereby avoiding safety accidents caused by misoperation during the operation of the electric tool.

The present invention is not limited to the described embodiments. Those skilled in the art may make some modifications or changes without departing from the spirit and scope of the present invention, that is, the scope of disclosure. Therefore, the scope of protection of the present invention shall be based on the scope defined in the claims.

Claims

A power tool capable of limiting the direction of working of a working part, characterized in that the power tool comprises a gripping part, a driving part and a working part fixedly connected to the driving part, the power tool is provided with a steering control assembly, the steering control assembly comprises a steering button and a switch steering column, the steering button comprises a button body and an annular structure with an opening protruding from the side of the button body, the switch steering column is placed in the opening of the annular structure, and the switch steering column is driven by the steering button to move back and forth; the working part is provided with a mounting guide column docked and assembled with the driving part, the end of the mounting guide column is designed with a step structure, when the working part can only be driven to work in one direction, the step structure is set as a half-step structure along the width direction of the end, and the protruding part of the half-step structure abuts against the steering control assembly after the working part is assembled with the driving part to prevent it from moving back and forth, thereby limiting the working part to only work in one direction; when the working part can be driven to work in two directions, the step structure is set as a full-step structure along the width direction of the end, so that the steering control assembly can slide smoothly over the step structure.
An electric tool capable of limiting the working direction of a working part as claimed in claim 1 is characterized in that the protruding portion of the semi-step structure abuts against the switch steering column of the steering control assembly after the working part and the driving part are assembled to prevent the switch steering column from moving back and forth.
An electric tool capable of limiting the working direction of a working part as claimed in claim 1 is characterized in that the protruding portion of the semi-step structure abuts against the annular structure of the steering button of the steering control assembly to prevent it from moving back and forth after the working part and the driving part are assembled.
An electric tool capable of limiting the working direction of a working part as claimed in claim 2 or 3, characterized in that the side edge of the semi-step structure is designed with a guiding slope structure.
An electric tool capable of limiting the working direction of a working component as claimed in claim 2 or 3, characterized in that the mounting guide column is located on the bottom surface of the working component and is arranged in a horizontal structure.
An electric tool capable of limiting the working direction of a working part as described in claim 2 or 3, characterized in that the electric tool is a portable battery-driven electric tool or an external power source-driven electric tool.
An electric tool capable of limiting the working direction of a working component as claimed in claim 2 or 3, characterized in that the housing of the holding component and the driving component are an integrally formed housing.
An electric tool capable of limiting the working direction of a working component as claimed in claim 2 or 3, characterized in that the bottom of the gripping component has a battery containing structure.