CN217847739U - Electric tool - Google Patents

Abstract

The application provides an electric tool, including the casing, arrange motor and the controlling means in the casing in, controlling means includes switch and trigger switch's trigger subassembly, electric tool is still including installing in the switch shield of casing, the switch shield has outstanding in the casing and is the operating surface of naked form, the trigger subassembly has holding surface, its characterized in that: the switch dust cover comprises a main body, a boss and a deformation part, the boss is abutted to the shell, the deformation part protrudes out of the boss and is abutted to and deformed by the supporting surface, and the deformation part, the main body and the supporting surface jointly form a closed inner cavity.

Description

Electric tool

Technical Field

The application relates to the field of tools, in particular to an electric tool.

Background

Along with the development of science and technology, more and more electric tool have replaced hand tool and have got into people's life, and on the one hand, electric tool can be very big improvement work efficiency, and on the other hand, electric tool has also improved people's quality of life to a certain extent.

The existing electric tool switch is provided with a switch cap, a switch body and a switch operating piece (a button, a button and a trigger), and because the switch cap, the switch body and the switch operating piece (the button, the button and the trigger) are required to move or rotate relatively, a gap is formed between the switch cap and the switch operating piece, usually, in an environment where an electric tool is required to be used, a large amount of dust or scraps generated when the electric tool is used are often accompanied, fine floating objects can enter the switch body from the gap, if the fine floating objects are accumulated on a switch communicating contact, the electric conductivity can be influenced, and the switch can not be electrified seriously; in order to prevent dust from entering the body, a switch cap made of rubber materials is arranged outside the switch operating piece to cover the switch operating piece and the gap opening.

When the dustproof switch is used, the force of the switch cap is pressed, the matching size of the switch cap, the shell and the switch is obtained, the size chain exists, the assembling convenience is considered, the overvoltage is generally small or clearance fit exists, and therefore the dustproof effect is poor.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming the not enough of existence among the prior art, provides a modified electric tool, through the mode that increases the contact surface, promotes dustproof ability, is favorable to solving above-mentioned problem to improve the inside closure of switch.

The application provides an electric tool, including the casing, arrange motor and the controlling means in the casing in, controlling means includes switch and trigger switch's trigger subassembly, electric tool is still including installing in the switch shield of casing, the switch shield has outstanding in the casing and is the operating surface of naked form, the trigger subassembly has holding surface, its characterized in that:

the switch dust cover comprises a main body, a boss and a deformation part, the boss is abutted to the shell, the deformation part protrudes out of the boss and is abutted to the supporting surface to deform, and the deformation part, the main body and the supporting surface jointly form a closed inner cavity to prevent dust from entering the inner cavity.

Further, the switch dust cover is configured in a cap shape, and the deformation portion is formed by extending the main body toward the support surface.

Further, the trigger assembly comprises a platform and a trigger rotatably mounted on the platform, the supporting surface is formed on one side of the platform adjacent to the trigger, and the platform is arranged between the trigger and the switch.

Further, the thickness of the deformation portion decreases in a direction toward the support surface.

Furthermore, the boss is provided with a holding part, the holding part and the deformation part are arranged in parallel, a deformation space is formed between the holding part and the deformation part, the deformation part protrudes out of the holding part in the axial direction of the inner cavity, and when pressure perpendicular to the operation surface is applied, the tail end of the deformation part deforms in the deformation space and abuts against the supporting surface.

Further, in the direction parallel to the supporting surface, the ratio of the size of the deformation portion to the size of the holding portion is not more than 1:2, and the holding portion always has a thickness larger than the deformation portion to prevent the deformation portion from being excessively deformed, thereby weakening the dustproof effect.

Furthermore, the shell comprises a first limiting arm and a second limiting arm, the first limiting arm and the second limiting arm are oppositely arranged, a limiting space is formed between the first limiting arm and the second limiting arm, and the boss and the platform are partially located in the limiting space.

Furthermore, first spacing arm and the axis setting of second spacing arm along the inner chamber, the boss supports and leans on in first spacing arm, the platform supports and presses in the spacing arm of second.

Furthermore, the limiting space is not communicated with the inner cavity.

Drawings

Fig. 1 is a partial exploded view of a power tool according to an embodiment of the present application.

Fig. 2 is a perspective view of a switch dust cap according to an embodiment of the present application.

Fig. 3 is a cross-sectional view of the switch dust cap shown in fig. 2.

Fig. 4 is a state diagram showing the use of the control device shown in fig. 2.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. Unless defined otherwise, technical or scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. As used in this application, the terms "first," "second," and the like do not denote any order, quantity, or importance, but rather are used to distinguish one element from another. Also, the use of the terms a, an, etc. do not denote a limitation of quantity, but rather denote the presence of at least one. "plurality" or "a number" means two or more. Unless otherwise indicated, "front", "rear", "lower" and/or "upper" and the like are for convenience of description and are not limited to one position or one spatial orientation. The word "comprising" or "comprises", and the like, means that the element or item listed after "comprises" or "comprising" is inclusive of the element or item listed after "comprising" or "comprises", and the equivalent thereof, and does not exclude additional elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. As used in this specification and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.

With reference to fig. 1, an embodiment of the present application provides an electric tool 100 (taking a sander as an example), which includes a housing 10 and a motor 20 accommodated in the housing, where the housing 10 includes an upper housing 12 and a lower housing 11, and the motor is accommodated in a space surrounded by the upper housing 12 and the lower housing 11 for driving a working head to move. The power tool 100 further includes a control device, which includes a trigger switch 30 for controlling the operating state of the motor (e.g., start-up, shut-down, etc.), a trigger assembly 50 and a switch dust cover 40, wherein the switch dust cover 40 is used for covering the trigger switch 30 to prevent dust, moisture, etc. from entering the trigger switch 30, and the trigger assembly 50 is used for triggering the trigger switch 30 (described in detail below).

The switch dust cover 40 described with reference to fig. 2 and 3 includes a main body 42, a boss 41, and a deformation portion 43, the switch dust cover is configured in a cap shape, the deformation portion 43 is formed by extending the main body 42 in a direction toward a support surface 321 (described below), the boss 41 is formed by extending the switch dust cover 40 in a circumferential direction, the boss 41 includes an abutting portion 411 and a holding portion 412, the abutting portion 411 and the holding portion 412 respectively have an abutting surface 411a and a holding surface 412a, and the abutting surface 411a is disposed opposite to the holding surface 412 a. The deformation part, the main body and the supporting surface jointly form a closed inner cavity C, so that dust and water vapor are prevented from entering the switch.

The holding portion 412 and the deforming portion 43 are disposed opposite to each other in a direction parallel to the opening, and a deformation space a is formed therebetween, and when the switch dust cap is subjected to a pressure perpendicular to the operation surface of the switch dust cap, the deforming portion 43 can be deformed toward the holding portion 412 in the deformation space a.

Preferably, the deformation portion 43 protrudes from the holding portion 412 in the opening direction, the thickness of the deformation portion 43 decreases in a direction toward the supporting surface 321, the ratio of the size of the deformation portion 43 to the size of the holding portion 412 is not greater than 1:2 in the opening direction, and the thickness of the holding portion 412 is always greater than the thickness of the deformation portion 43, so as to prevent the deformation portion 43 from being excessively deformed, thereby ensuring the dustproof effect.

Referring to fig. 4, the trigger 31 is rotatably disposed on the platform 32, the platform 32 has a supporting surface 321, the trigger is disposed on the supporting surface 321, and the platform 32 is disposed between the trigger and the switch. The supporting surface 321 is formed on a side of the platform 32 adjacent to the trigger 31, and a side opposite to the supporting surface 321 is a lower surface 322 of the platform 32.

The electric tool 100 is provided with a limiting mechanism 13, the limiting mechanism 13 comprises a first limiting arm 131 and a second limiting arm 132, the first limiting arm 131 and the second limiting arm 132 are oppositely arranged, a limiting space B is formed between the first limiting arm 131 and the second limiting arm 132, and the opposite surfaces of the first limiting arm 131 and the second limiting arm 132 in the limiting space B are respectively a first limiting surface 131a and a second limiting surface 132a.

Further, the inner cavity C is not communicated with the limiting space B, and when the switch dust cover 40 is installed and used, the switch dust cover 40 and the part of the platform 32 are accommodated in the limiting space B, wherein: the deformation portion 43 abuts against the support surface 321 of the platform 32, and the inner cavity C forms a closed space; the abutting surface 411a abuts against the first position-limiting surface 131a, and the lower surface 322 abuts against the second position-limiting surface 132a.

The limit space B forms a closed space under the combined action of the deformation portion 43 abutting against the support surface 321, the abutting surface 411a abutting against the first limit surface 131a, and the lower surface 322 abutting against the second limit surface 132a, so as to form multiple dustproof effects.

When dust or moisture is close to the switch part of the electric tool 100, the abutting part 411 and the first limit arm 131 abut against to form a first protection to block most of the dust and moisture, when a small part of the dust and moisture enters the limit space, the deformation part 43 deforms to abut against the platform 32 to form a second protection to prevent the dust and the moisture from entering the inner cavity C, meanwhile, the platform 32 and the second limit arm 132 abut against to form a third protection to prevent the moisture and the dust from entering the switch, so that important electrical mechanisms inside the electric tool 100 are polluted and corroded, and the multiple protections can avoid damage of a machine and prolong the service life.

Although the present application has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the application, and all changes, substitutions and alterations that fall within the spirit and scope of the application are to be understood as being covered by the following claims.

Claims (10)

1. The utility model provides an electric tool, includes the casing, arranges motor and controlling means in the casing in, controlling means includes switch and trigger switch's trigger subassembly, electric tool is still including installing the switch shield in the casing, the switch shield has outstanding and be the operating surface of naked form in the casing, trigger subassembly has holding surface, its characterized in that:

the switch dust cover comprises a main body, a boss and a deformation part, the boss is abutted to the shell, the deformation part protrudes out of the boss and is abutted to and deformed by the supporting surface, and the deformation part, the main body and the supporting surface jointly form a closed inner cavity.

2. A power tool according to claim 1, wherein: the switch dust cover is in a cap shape, and the deformation part is formed by extending the main body towards the direction of the supporting surface.

3. A power tool according to claim 2, wherein: the trigger assembly comprises a platform and a trigger which is rotatably arranged on the platform, and the supporting surface is formed on one side of the platform adjacent to the trigger.

4. A power tool according to claim 3, wherein: the platform is arranged between the trigger and the switch.

5. A power tool according to claim 2, wherein: the thickness of the deformation portion decreases in a direction toward the support surface.

6. An electric tool according to claim 5, wherein: the boss is provided with a holding part, the holding part and the deformation part are arranged in parallel, a deformation space is formed between the holding part and the deformation part, and the deformation part protrudes out of the holding part in the axial direction of the inner cavity.

7. An electric tool according to claim 6, wherein: the ratio of the dimension of the deformation portion to the dimension of the holding portion in a direction parallel to the support surface is not more than 1:2.

8. A power tool according to claim 3, wherein: the shell comprises a first limiting arm and a second limiting arm, the first limiting arm and the second limiting arm are oppositely arranged, a limiting space is formed between the first limiting arm and the second limiting arm, and the boss and the platform are partially located in the limiting space.

9. A power tool according to claim 8, wherein: the first limiting arm and the second limiting arm are arranged along the axis of the inner cavity, the boss abuts against the first limiting arm, and the platform abuts against the second limiting arm.

10. A power tool according to claim 9, wherein: the limiting space is not communicated with the inner cavity.

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