CN203260499U - Emergency switch - Google Patents

Abstract

The utility model discloses an emergency switch comprising a button, an upper cover, a fixing plate, an inner pull bar, and an outer pull bar. The upper cover is constituted by four side plates, and the fixing plate is fixedly disposed on an upper end surface of the upper cover by a screw. The button is fixedly disposed on one end of the outer pull bar, and the outer pull bar passes through the fixing plate. The part of the outer pull bar disposed in the upper cover is provided with a position-restricted step layer. The emergency switch is advantageous in that by arranging the step layer, the dust can be prevented from falling in the housing directly, and at the same time, the outer pull bar can be prevented from popping out.

Description

Emergency switch

Technical field

The utility model belongs to a kind of emergency switch.

Background technology

Emergency switch mainly is used on electric motor car or some electric devices, come Accident prevention to occur in case of emergency needing to take emergency switch, so the contact of switch must be sensitive, can not there be too many dust the inside of switch, the button normal operation must promote contact head by push rod and move, must be porose when yet push rod passes shell, dust is easily fallen into from the hole.

Summary of the invention

The purpose of this utility model is to overcome the defective of prior art, and a kind of dustproof emergency switch is provided.

To achieve these goals, the utility model has adopted following technical proposal: a kind of emergency switch, wherein, this switch comprise button, upper cover, fixed head and inside and outside pull bar; Described upper cover is made of 4 side plates, and fixed head is fixed by screws in the upper cover upper surface; Button is fixed on an end of outside link, and outside link penetrates fixed head, and the part that outside link is positioned at upper cover has a spacing step layer.

Prevent that owing to being provided with one deck step layer, can playing the dust straight line from falling in shell, and step layer also played spacing effect, prevented that outside link from ejecting.

Wherein, be provided with one deck Dustproof pipe between described button and fixed head.

Dustproof pipe can prevent effectively that dust from falling into shell in the hole.

Wherein, be provided with key on described outside link, offer the groove that matches on button.

Adopt the keyway cooperation to make between button and outside link more stable

Wherein, adopt bonding fixing between described Dustproof pipe and fixed head.

Wherein, described button upper surface is provided with coarse lines.

Being provided with coarse lines is in order to prevent that hand is sliding.

Below with reference to drawings and Examples, the utility model is described in detail.

Description of drawings

Fig. 1 is the structure chart of the utility model emergency switch.

Embodiment

See also Fig. 1, a kind of emergency switch, this switch comprise button 3, upper cover 1, lower cover 11, fixed head 2 and inside and outside pull bar 5; Upper cover is made of 4 side plates, and fixed head 2 is fixed by screws in the upper surface of upper cover 1; Button 3 is fixed on an end of outside link 5, one end of draw-in bar 4 is fixed in outside link 5, an other end is connected with contact plate 6, outside link 5 penetrates fixed head 2 and makes outside link 5 to move axially, the part that outside link 5 is positioned at upper cover has a spacing step layer 7, is provided with one deck Dustproof pipe 8 between button 3 and fixed head 2; Be provided with key 9 on outside link 5, offer the groove that matches on button 3; The upper surface of button 3 is provided with coarse lines, has the terminal stud 10 of 2 outputs on 1 one sides of upper cover.

Claims (5)

1. emergency switch, it is characterized in that: this switch comprises button (3), upper cover (1), fixed head (2) and inside and outside pull bar (4), (5); Described upper cover (1) is made of 4 side plates, and fixed head (2) is fixed by screws in the upper cover upper surface; Button (3) is fixed on an end of outside link (5), and outside link (5) penetrates fixed head (2), and the part that outside link (5) is positioned at upper cover has a spacing step layer (7).

2. emergency switch according to claim 1, is characterized in that: be provided with one deck Dustproof pipe (8) between described button (3) and fixed head (2).

3. emergency switch according to claim 1, is characterized in that: be provided with key (9) on described outside link (5), offer the groove that matches on button.

4. emergency switch according to claim 1, is characterized in that: adopt bonding fixing between described Dustproof pipe (8) and fixed head (2).

5. emergency switch according to claim 1, it is characterized in that: described button (3) upper surface is provided with coarse lines.

Images