CN202977241U

CN202977241U - Switch for electric tool

Info

Publication number: CN202977241U
Application number: CN 201220710302
Authority: CN
Inventors: 陆亚洲; 谭和平
Original assignee: Zhangjiagang Huajie Electronics Co Ltd
Current assignee: Zhangjiagang Huajie Electronics Co Ltd
Priority date: 2012-12-20
Filing date: 2012-12-20
Publication date: 2013-06-05
Anticipated expiration: 2022-12-20

Abstract

The utility model discloses a switch for an electric tool, which is provided with a base, an upper cover, a push rod and a button, wherein the upper cover is buckled with the base; a semicircular limit ring I is arranged at the front end of the upper cover; a semicircular limit ring II is arranged at the front end of the base; the semicircular limit ring I is matched with the semicircular limit ring II to form a circular ring III; a circular ring IV is arranged in the inner cavity of the button; the push rod is located in the inner cavity of the circular ring IV; one end of the push rod is embedded and buckled in the shell of the button, and the other end of the push rod stretches in the inner cavity of the circular ring III; the inner diameter of the circular ring IV is greater than the outer diameter of the circular ring III; and an opening at the front end of the circular ring III is located in the inner cavity of the circular ring IV in the case that the switch for an electric tool is in an unused state or a used state. According to the switch for an electric tool disclosed by the utility model, the peripheral barrier of the push rod is formed via the circular ring III and the circular ring IV, and used for preventing dust from directly entering in each component of the switch from the inlet of the push rod; and the peripheral barrier is effective in dust prevention, simple in structure, and low in production cost, thus reducing the quantity of dust prevention components, avoiding the phenomenon of missing installation, increasing assembly speed, and improving assembly quality.

Description

Electric tool switch

Technical field

The utility model relates to the trigger switch technical field that electric tool etc. uses, and especially relates to a kind of electric tool switch.

Background technology

The dustproof construction that the push rod place of traditional electric tool switch adopts normally reaches dust-proof effect by all kinds of sealing rings are installed, and easily neglected loading, part are various, assembling inconvenience, and cost improves relatively.

The utility model content

Technical problem to be solved in the utility model is: a kind of electric tool switch is provided, and its effective dustproof and easily assembling in push rod place, production cost is lower.

for solving the problems of the technologies described above, the technical solution adopted in the utility model is: a kind of electric tool switch, has pedestal, upper cover, push rod, button, upper cover and pedestal are interlocked, the front end of upper cover has semicircle spacing ring one, the front end of pedestal has semicircle spacing ring two, semicircle spacing ring one matches with semicircle spacing ring two and forms annulus three, the inner chamber of button is provided with annulus four, push rod is positioned at the inner chamber of annulus four, push rod one end buckle is in the housing of button, the push rod other end stretches into the inner chamber of annulus three, the internal diameter of annulus four is greater than the external diameter of annulus three, when electric tool switch is in inactive or the state of use, the front opening of annulus three all is positioned at the inner chamber of annulus four.

Described annulus three is matched in clearance with annulus four.

the beneficial effects of the utility model are: when electric tool switch is in inactive or the state of use, the front opening of annulus three all is positioned at the inner chamber of annulus four, push rod is positioned at the inner chamber of annulus four, push rod one end buckle is in the housing of button, the push rod other end stretches into the inner chamber of annulus three, therefore, annulus three and annulus four form the peripheral barrier of push rods, prevent that dust from directly entering each components interior of switch from the push rod porch, button is by annulus four location, push rod moves along annulus three axial directions, effectively dustproof and simple in structure, cost of manufacture is lower, thereby reduced dustproof number of spare parts, avoided neglected loading now to look like, reduced to a certain extent cost, assembling speed and quality have been improved.

Description of drawings

Fig. 1 is structural representation of the present utility model;

Fig. 2 is exploded perspective view of the present utility model;

Fig. 3 is the structural representation of button in the utility model;

Fig. 4 is pedestal in the utility model, upper cover and push rod scheme of installation;

Fig. 5 is the final position schematic diagram that electric tool switch of the present utility model is in dead status;

Fig. 6 is the final position schematic diagram that electric tool switch of the present utility model is in the use state;

In figure: 1, pedestal, 2, upper cover, 3, button, 4, push rod, 5-1, semicircle spacing ring one, the semicircle spacing ring two, 6 of 5-2, annulus four.

Embodiment

Below in conjunction with accompanying drawing, describe specific embodiments of the present utility model in detail.

as shown in Fig. 1-6, a kind of electric tool switch, has pedestal 1, upper cover 2, push rod 4, button 3, upper cover 2 is interlocked with pedestal 1, the front end of upper cover 2 has semicircle spacing ring one 5-1, the front end of pedestal 1 has semicircle spacing ring two 5-2, semicircle spacing ring one 5-1 matches with semicircle spacing ring two 5-2 and forms annulus three, the inner chamber of button 3 is provided with annulus 46, push rod 4 is positioned at the inner chamber of annulus 46, push rod 4 one end buckles are in the housing of button 3, push rod 4 other ends stretch into the inner chamber of annulus three, the internal diameter of annulus 46 is greater than the external diameter of annulus three, when electric tool switch is in inactive or the state of use, the front opening of annulus three all is positioned at the inner chamber of annulus 46.Annulus three is matched in clearance with annulus 46.

As shown in Figure 5, when electric tool switch is in dead status, push rod is shifted the use location onto, the front opening of annulus three is positioned at the inner chamber of annulus 46, as shown in Figure 6, when electric tool switch is in the use state, promotes button 3 and make push rod 4 shift the use location onto, the front opening of annulus three also is positioned at the inner chamber of annulus 46.

Push rod 4 is positioned at the inner chamber of annulus 46, push rod 4 one end buckles are in the housing of button 3, push rod 4 other ends stretch into the inner chamber of annulus three, therefore, annulus three and annulus 46 form the peripheral barrier of push rods 4, prevent that dust from directly entering each components interior of switch from push rod 4 porch, button 3 is by annulus 46 location, push rod 4 moves along annulus three axial directions, and effectively dustproof and simple in structure, cost of manufacture is lower, thereby reduced dustproof number of spare parts, avoid now picture of neglected loading, reduced to a certain extent cost, improved assembling speed and quality.

Claims

1. electric tool switch, has pedestal (1), upper cover (2), push rod (4), button (3), upper cover (2) is interlocked with pedestal (1), it is characterized in that: the front end of described upper cover (2) has semicircle spacing ring one (5-1), the front end of pedestal (1) has semicircle spacing ring two (5-2), semicircle spacing ring one (5-1) matches with semicircle spacing ring two (5-2) and forms annulus three, the inner chamber of button (3) is provided with annulus four (6), push rod (4) is positioned at the inner chamber of annulus four (6), push rod (4) one end buckles are in the housing of button (3), push rod (4) other end stretches into the inner chamber of annulus three, the internal diameter of annulus four (6) is greater than the external diameter of annulus three, when electric tool switch is in inactive or the state of use, the front opening of annulus three all is positioned at the inner chamber of annulus four (6).

2. electric tool switch according to claim 1 is characterized in that: described annulus three is matched in clearance with annulus four (6).