CN203445016U

CN203445016U - Trigger switch

Info

Publication number: CN203445016U
Application number: CN201320589538.1U
Authority: CN
Inventors: 潘华林; 袁满
Original assignee: Ningbo Ka Paisi Electronic Science And Technology Co Ltd
Current assignee: Ningbo Ka Paisi Electronic Science And Technology Co Ltd
Priority date: 2013-09-23
Filing date: 2013-09-23
Publication date: 2014-02-19
Anticipated expiration: 2023-09-23

Abstract

The utility model relates to the device technology field for turning on or turning off an electric appliance, in particular to a trigger switch. The trigger switch of the utility model can realize the instantaneous on-off, and is better in on-off performance, thereby guaranteeing the service life. The trigger switch comprises a shell, a trigger and a pull rod, a working chamber is arranged in the shell, one end of the pull rod is stretched into the working chamber of the shell, and the other end is connected with the trigger. A movable block assembly and a pull rod spring are arranged in the working chamber of the shell, the movable block assembly comprises a movable block, a bottom plate and a contact mechanism, and also comprises a blocking spring leaf. The blocking spring leaf is arranged on an inner wall of the working chamber, an outer wall of the movable block is equipped with an inverted U-shaped matching fastening block, and the blocking spring leaf is equipped with a U-shaped carrying port. When the movable block is located at the limit position at the left end, the left end of the carrying port is contacted with the right end of the matching fastening block; and when the movable block is located at the limit position at the right end, the right end of the carrying port is contacted with the left end of the matching fastening block.

Description

Trigger

Technical field

The utility model relates to for opening or close the technical field of the device of electrical appliance, particularly relates to a kind of trigger.

Background technology

As everyone knows, trigger is mainly used in the relatively large angle grinding machine of power, and on the instruments such as cutting machine, these tool types are relatively severe due to environment for use in actual applications, and applied load is relatively heavier, and the useful life of instrument is relatively long; The instrument of these types is harsher comparatively speaking to the requirement of switch.Require switch can bear the instantaneous large-current that instrument produces when starting, and provide stable electric current output in use procedure, Simultaneous Switching can bear very large breaking current of moment when disconnecting, and therefore for core texture action request necessity of switch, can stablize the load current that bears instrument institute product.

Most of similarly switch or electrical endurance are not long in the market, or cannot bear powerful tool applications, after all be the design imperfection due to the contact-actuating mechanism part of switch, cause cannot bearing for a long time in actual use instantaneous large-current switch on and off or the mechanism of switch when just bringing into use, mechanism action is more smooth and easy, cross gear rapidly, but after the life-span of certain number of times is used, crossing gear just occurs slowly, sluggishness, the life-span, serious situation about shortening occurred.

Utility model content

For solving the problems of the technologies described above, the utility model provides a kind of and realizes moment and be switched on or switched off, thereby break-make better performances has ensured the trigger in useful life.

Trigger of the present utility model, comprise shell, trigger and pull bar, in described shell, be provided with working chamber, one end of described pull bar stretches in the working chamber of shell, the other end of described pull bar is connected with trigger, in the working chamber of described shell, be provided with movable block assembly and pull-rod spring, described movable block assembly comprises movable block, base plate and contact mechanism, described movable block is fixed on described base plate, the end of described base plate in stretching to shell working chamber with pull bar is connected, one end of described pull-rod spring is connected with working chamber inwall, the other end of described pull-rod spring is connected with movable block, also comprised gear shell fragment, the described gear shell fragment of crossing is arranged on described working chamber inwall, on the outer wall of described movable block, be provided with down " U " shape and coordinate fixture block, described mistake on gear shell fragment is provided with " U " shape birdsmouth, when described movable block is positioned at left end extreme position, the left end of described birdsmouth contacts with coordinating the right-hand member of fixture block, and when described movable block is positioned at extreme right position, the right-hand member of described birdsmouth contacts with coordinating the left end of fixture block.

Trigger of the present utility model, described cooperation fixture block and movable block are integrated design.

Trigger of the present utility model, the described gear shell fragment of crossing is installed on described working chamber inwall.

Compared with prior art the beneficial effects of the utility model are: by above-mentioned setting, the moment of excessively realizing that can keep off shell fragment by mistake is switched on or switched off, thereby break-make better performances has ensured useful life.

Accompanying drawing explanation

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

Embodiment

Below in conjunction with drawings and Examples, embodiment of the present utility model is described in further detail.Following examples are used for illustrating the utility model, but are not used for limiting scope of the present utility model.

As shown in Figure 1, trigger of the present utility model, comprise shell 1, trigger and pull bar 2, in shell, be provided with working chamber, one end of pull bar stretches in the working chamber of shell, the other end of pull bar is connected with trigger, in the working chamber of shell, be provided with movable block assembly and pull-rod spring 3, movable block assembly comprises movable block 4, base plate 5 and contact mechanism, movable block is fixed on base plate, the end of base plate in stretching to shell working chamber with pull bar is connected, and one end of pull-rod spring is connected with working chamber inwall, and the other end of pull-rod spring is connected with movable block; Also comprised gear shell fragment 6, crossing gear shell fragment is arranged on working chamber inwall, on the outer wall of movable block, be provided with down " U " shape and coordinate fixture block 7, cross and on gear shell fragment, be provided with " U " shape birdsmouth, when movable block is positioned at left end extreme position, the left end of birdsmouth contacts with coordinating the right-hand member of fixture block, and when movable block is positioned at extreme right position, the right-hand member of birdsmouth contacts with coordinating the left end of fixture block; By above-mentioned setting, the moment of excessively realizing that can keep off shell fragment by mistake is switched on or switched off, thereby break-make better performances has ensured useful life.

Trigger of the present utility model, coordinates fixture block and movable block to be integrated design.

Trigger of the present utility model, crosses gear shell fragment and is installed on working chamber inwall.

The above is only preferred implementation of the present utility model; should be understood that; for those skilled in the art; do not departing under the prerequisite of the utility model know-why; can also make some improvement and modification, these improve and modification also should be considered as protection range of the present utility model.

Claims

1. a trigger, comprise shell, trigger and pull bar, in described shell, be provided with working chamber, one end of described pull bar stretches in the working chamber of shell, the other end of described pull bar is connected with trigger, in the working chamber of described shell, be provided with movable block assembly and pull-rod spring, described movable block assembly comprises movable block, base plate and contact mechanism, described movable block is fixed on described base plate, the end of described base plate in stretching to shell working chamber with pull bar is connected, one end of described pull-rod spring is connected with working chamber inwall, the other end of described pull-rod spring is connected with movable block, it is characterized in that, also comprised gear shell fragment, the described gear shell fragment of crossing is arranged on described working chamber inwall, on the outer wall of described movable block, be provided with down " U " shape and coordinate fixture block, described mistake on gear shell fragment is provided with " U " shape birdsmouth, and when described movable block is positioned at left end extreme position, the left end of described birdsmouth contacts with coordinating the right-hand member of fixture block, when described movable block is positioned at extreme right position, the right-hand member of described birdsmouth contacts with coordinating the left end of fixture block.

2. trigger as claimed in claim 1, is characterized in that, described cooperation fixture block and movable block are integrated design.

3. trigger as claimed in claim 1, is characterized in that, the described gear shell fragment of crossing is installed on described working chamber inwall.