CN103035433A

CN103035433A - Electric tool switch

Info

Publication number: CN103035433A
Application number: CN2012105584128A
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: 2013-04-10

Abstract

The invention discloses an electric tool switch which is provided with a base, an upper cover, a push rod and a button. The upper cover is buckled with the base, the front end of the upper cover is provided with a first semicircle limit ring, and the front end of the base is provided with a second semicircle limit ring. The first semicircle limit ring and the second semicircle limit ring are matched to form a third ring. An inner cavity of the button is provided with a fourth ring. The push rod is arranged in an inner cavity of the fourth ring. One end of the push rod is buckled in a shell of the button in an embedded mode. The other end of the push rod extends into an inner cavity of the third ring. The inner diameter of the fourth ring is bigger than the outer diameter of the third ring. When the electric tool switch is in an out-of-service state or in an in-service state, the front end opening of the third ring is arranged in the inner cavity of the fourth ring. In the electric tool switch, the third ring and the fourth ring form a peripheral shield for the push rod so as to prevent dust from directly entering into the inside of parts of the switch from an entry of the push rod. Accordingly, the electric tool switch can effectively prevent dust, and is simple in structure and low in manufacturing cost. Therefore, the number of dustproof parts is reduced, the phenomenon of neglected installation is prevented, and the speed and the quality of assembly are improved.

Description

Electric tool switch

Technical field

The present invention relates to the employed trigger switch technical fields such as electric tool, especially relate 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.

Summary of the invention

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

For solving the problems of the technologies described above, the technical solution used in the present invention is: a kind of electric tool switch, has pedestal, loam cake, push rod, button, loam cake and pedestal are interlocked, the front end of loam cake 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, and the front opening of annulus three all was positioned at the inner chamber of annulus four when electric tool switch was in inactive or the state of use.

Described annulus three is matched in clearance with annulus four.

The invention has the beneficial effects as follows: the front opening of annulus three all was positioned at the inner chamber of annulus four when electric tool switch was in inactive or the state of use, 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 has reduced dustproof number of spare parts, has avoided neglected loading now to look like, reduce to a certain extent cost, improved assembling speed and quality.

Description of drawings

Fig. 1 is structural representation of the present invention;

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

Fig. 3 is the structural representation of button among the present invention;

Fig. 4 is pedestal among the present invention, loam cake and push rod scheme of installation;

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

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

Among the figure: 1, pedestal, 2, loam cake, 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 invention in detail.

Shown in Fig. 1-6, a kind of electric tool switch, has pedestal 1, loam cake 2, push rod 4, button 3, loam cake 2 is interlocked with pedestal 1, the front end of loam cake 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, and the front opening of annulus three all was positioned at the inner chamber of annulus 46 when electric tool switch was in inactive or the state of use.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), loam cake (2), push rod (4), button (3), loam cake (2) is interlocked with pedestal (1), it is characterized in that: the front end of described loam cake (2) has semicircle spacing ring one (5-1), the front end of pedestal (1) has semicircle spacing ring (5-2), semicircle spacing ring one (5-1) matches with semicircle spacing ring (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, and the front opening of annulus three all was positioned at the inner chamber of annulus four (6) when electric tool switch was in inactive or the state of use.

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