CN202534590U

CN202534590U - Contactless switch

Info

Publication number: CN202534590U
Application number: CN2012202068185U
Authority: CN
Inventors: 杨富刚
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-05-10
Filing date: 2012-05-10
Publication date: 2012-11-14
Anticipated expiration: 2022-05-10

Abstract

The utility model discloses a contactless switch, which comprises a hollow shell, wherein the upper part of a left side plate of the shell is provided with a through hole; the left lower part of a chamber in the shell is provided with a support block; the upper part of the chamber in the shell is provided with a switch shaft and a spring; the lower surface of the switch shaft is in contact with the support block; a stop is arranged at the middle part of the switch shaft, wherein the left part of the switch shaft extends out of the shell from the through hole, the right end surface of the switch shaft is provided with a counter bore, and an electromagnet is arranged in the counter bore; the spring is externally sleeved at the right part of the switch shaft, wherein one end of the spring is arranged on the right side wall of the shell, and the other end of the spring is arranged on the right end surface of the step of the switch shaft; a circuit board is arranged at the right lower side in the shell; a Hall element is welded above the circuit board; and three lead wires of the circuit board are led out of the shell from the right lower part of the shell. The contact switch disclosed by the utility model has the advantages of simple structure, low manufacturing cost, long service life and suitability for being used under strong impact and shock.

Description

Noncontacting switch

Technical field

The utility model relates to the switch that uses on a kind of combustion gas nailed apparatus, particularly a kind of contactless switch.

Background technology

The switch of combustion gas nailed apparatus mainly contains two kinds at present, and a kind of is the mechanical switch that the contact is arranged, and leans on the contact of two contacts to realize logical and disconnected; Because the combustion gas nailed apparatus is through the work under the strong impact endurance test shock of being everlasting, the mechanical switch that the contact is arranged is a Purely mechanical, poor reliability; Under rugged environment like this; The contact is fragile, causes switch to damage, thereby the useful life of reducing the combustion gas nailed apparatus is short.Another kind is an optoelectronic switch; This switch is longer useful life; Be not vulnerable to the influence of intense impact and vibrations, still, this construction of switch is complicated; Manufacturing cost is high, therefore seeks a kind of long service life, is difficult for being hit and the switch of vibration influence, low cost of manufacture becomes the useful life of present prolongation combustion gas nailed apparatus, reduces its manufacturing cost and be badly in need of one of problem that will solve.

The utility model content

In order to solve the problems of the technologies described above, the utility model provides the noncontacting switch of a kind of low cost of manufacture, long service life.

The technical scheme of the utility model is following: a kind of noncontacting switch, comprise hollow housing, and the top of the left plate of said housing is provided with a through hole (1c); The lower left quarter of said housing inner cavity chamber is provided with a back-up block (1b-1), and switch shaft (2) and spring (3) are housed on the top of housing inner cavity chamber, and the lower surface of said switch shaft (2) contacts with back-up block (1b-1); The middle part of said switch shaft (2) is provided with a step, and the left part of wherein said switch shaft (2) stretches out outside the housing from through hole (1c), is axially arranged with a counterbore in the right part of said switch shaft (2); Magnet (6) is housed in this counterbore; The upper surface of this magnet (6) is the S utmost point, and lower surface is the N utmost point, the said spring of the outer suit of said switch shaft (2) (3); And an end of said spring (3) is against on the right side wall of housing; The other end is against on the middle part step of switch shaft (2), and the lower right in the said housing is equipped with circuit board (4), at the top of this circuit board (4) welding Hall element (5); Three leads of said circuit board (4) are drawn outside the housing from the right lower quadrant of housing; When spring (3) when being in elongation state, said magnet (6) and Hall element (5) dislocation, the magnetic field of this magnet (6) does not exert an influence to Hall element (5); When spring (3) when being in compressive state, said magnet (6) is positioned at the top of Hall element (5), and the magnetic field of this magnet (6) exerts an influence to Hall element (5).

Adopt technique scheme, energized, with the left part of the said switch shaft of outer force urges, switch shaft moves to right; Said magnet is followed said switch shaft and is moved to right, and the N utmost point of said magnet is near the front of said Hall element, and under the effect in magnetic field, the output stage of Hall element and negative pole are connected; Remove external force, under the effect of spring force, switch shaft resets; Magnet is away from Hall element, and magnetic field is inoperative, and the output stage of Hall element and negative pole break off.Thereby realize the on-off function of switch.This construction of switch is simple, low cost of manufacture, and intense impact does not almost influence it with vibrations, is fit to very much use on the combustion gas nailed apparatus, and the switch of the utility model can also be used for other places certainly.

In technique scheme; Install for ease; Said housing comprises upper shell (1a) and lower house (1b), and the upper surface of the lower surface of said upper shell (1a) and lower house (1b) is respectively equipped with a groove, and the left plate of the groove of wherein said lower house (1b) extends upward; And on its extension, be provided with a semicircle breach; The position of the lower surface of the left plate of the groove of said upper shell (1a) then is higher than the lower surface of upper shell (1a), also is provided with a semicircular breach on the left plate of the groove of said upper shell (1a), and the semicircle breach on said upper shell (1a) and the lower house (1b) is formed the through hole (1c) of a circle; The left part of the groove of said lower house (1b) is provided with back-up block (1b-1); Said switch shaft (2) is contained in the groove of upper shell (1a), and the lower surface of said switch shaft (2) contacts with back-up block (1b-1), and the left part of said switch shaft (2) stretches out outside the housing from through hole (1c); One end of said spring (3) is against on the right side wall of groove of upper shell (1a), and the other end is against on the step at switch shaft (2) middle part; On the base plate near the groove of the lower house (1b) of right part, be provided with a conduit, said circuit board (4) is installed in the right part of the groove of lower house (1b), and the lead of said circuit board (4) stretches out outside the housing from this conduit.

In technique scheme; The upper surface of said lower house (1b) groove is provided with four joint pins (1b-2); The lower surface of said upper shell (1a) groove is provided with the connection counterbore (1a-2) corresponding with joint pin (1b-2), and joint pin (1b-2) inserted and is connected in the counterbore (1a-2) when said lower house (1b) docked with upper shell (1a).So only need upper shell and lower house be buckled together just and can they be coupled together, convenient for assembly.

Beneficial effect: the utility model is simple in structure, low cost of manufacture, long service life.

Description of drawings

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

Fig. 2 is the A-A cutaway view of Fig. 1;

Structural representation when Fig. 3 is in on-state for the switch of the utility model;

Fig. 4 is the structural representation of the upper shell of the utility model;

Fig. 5 is the structural representation after Fig. 4 upset;

Fig. 6 is the structural representation of the lower house of the utility model.

Embodiment

Below in conjunction with accompanying drawing and embodiment the utility model is described further:

Embodiment 1, and shown in Fig. 1-6, the noncontacting switch of the utility model mainly is made up of parts such as housing, switch shaft 2, spring 3, circuit board 4, Hall element 5 and magnet 6; The top of the left plate of said housing is provided with a through hole 1c, and the lower left quarter of said housing inner cavity chamber is provided with a back-up block 1b-1, and switch shaft 2 and spring 3 are housed on the top of housing inner cavity chamber; The lower surface of said switch shaft 2 contacts with back-up block 1b-1, said switch shaft 2 the middle part be provided with a step, the left part of wherein said switch shaft 2 stretches out outside the housing from through hole 1c; Be axially arranged with a counterbore in the right part of said switch shaft 2, magnet 6 is housed in this counterbore, the upper surface of this magnet 6 is the S utmost point; Lower surface is the N utmost point, the said spring 3 of said switch shaft 2 outer suits, and an end of said spring 3 is against on the right side wall of housing; The other end is against on the step of middle part of switch shaft 2; Lower right in the said housing is equipped with circuit board 4, and welding Hall element 5 above this circuit board 4 is drawn three utmost points (positive pole, negative pole and output stage) of 3 lines as Hall original paper 5 from wiring board 4; Three leads of said circuit board 4 are drawn outside the housing from the right lower quadrant of housing; When spring 3 is in elongation state, said magnet 6 and Hall element 5 dislocation, the magnetic field of this magnet 6 does not exert an influence to Hall element 5; Switch is in off-state.When spring 3 was in compressive state, said magnet 6 was positioned at the top of Hall element 5, and the magnetic field of this magnet 6 exerts an influence to Hall element 5, and under the effect in magnetic field, the output stage of Hall element 5 and negative pole are connected, and switch is in on-state.

Install for ease; Said housing comprises upper shell 1a and lower house 1b, and the upper surface of the lower surface of said upper shell 1a and lower house 1b is respectively equipped with a groove, and the left plate of the groove of wherein said lower house 1b extends upward; And on its extension, be provided with a semicircle breach; The position of the lower surface of the left plate of the groove of said upper shell 1a then is higher than the lower surface of upper shell 1a, also is provided with a semicircular breach on the left plate of the groove of said upper shell 1a, and the semicircle breach on said upper shell 1a and the lower house 1b is formed the through hole 1c of a circle; The left part of the groove of said lower house 1b is provided with back-up block 1b-1; Said switch shaft 2 is contained in the groove of upper shell 1a, and the lower surface of said switch shaft 2 contacts with back-up block 1b-1, and the left part of said switch shaft 2 stretches out outside the housing from through hole 1c; One end of said spring 3 is against on the right side wall of groove of upper shell 1a, and the other end is against on the step at position in the switch shaft 2; To having a conduit, said circuit board 4 is installed in the right part in the groove of lower house 1b, and the lead of said circuit board 4 stretches out outside the housing from this conduit at the right part of lower house 1b.The upper surface of said lower house 1b groove is provided with four joint pin 1b-2; The lower surface of said upper shell 1a groove is provided with the connection counterbore 1a-2 corresponding with joint pin 1b-2, and joint pin 1b-2 inserted and is connected among the counterbore 1a-2 when said lower house 1b docked with upper shell 1a.

Although more than combine accompanying drawing that the preferred embodiment of the utility model is described; But the utility model is not limited to above-mentioned embodiment; Above-mentioned embodiment only is schematic rather than determinate, and those of ordinary skill in the art is under the enlightenment of the utility model, under the prerequisite of the utility model aim and claim; Can make multiple similar expression, such conversion all falls into the protection range of the utility model.

Claims

1. a noncontacting switch comprises hollow housing, it is characterized in that: the top of the left plate of said housing is provided with a through hole (1c); The lower left quarter of said housing inner cavity chamber is provided with a back-up block (1b-1), and switch shaft (2) and spring (3) are housed on the top of housing inner cavity chamber, and the lower surface of said switch shaft (2) contacts with back-up block (1b-1); The middle part of said switch shaft (2) is provided with a step, and the left part of wherein said switch shaft (2) stretches out outside the housing from through hole (1c), is axially arranged with a counterbore in the right part of said switch shaft (2); Magnet (6) is housed in this counterbore, and the upper surface of this magnet (6) is the S utmost point, and lower surface is the N utmost point; The said spring of the outer suit of said switch shaft (2) (3), an and end of said spring (3) is against on the right side wall of housing, the other end are against on the step of middle part of switch shaft (2); Lower right in the said housing is equipped with circuit board (4); The welding Hall element (5) in the top of this circuit board (4), three leads of said circuit board (4) are drawn outside the housing from the right lower quadrant of housing, when spring (3) when being in elongation state; Said magnet (6) and Hall element (5) dislocation, the magnetic field of this magnet (6) does not exert an influence to Hall element (5); When spring (3) when being in compressive state, said magnet (6) is positioned at the top of Hall element (5), and the magnetic field of this magnet (6) exerts an influence to Hall element (5).

2. according to the said noncontacting switch of claim 1; It is characterized in that: said housing comprises upper shell (1a) and lower house (1b); The upper surface of the lower surface of said upper shell (1a) and lower house (1b) is respectively equipped with a groove; The left plate of the groove of wherein said lower house (1b) extends upward, and on its extension, is provided with a semicircle breach, and the position of the lower surface of the left plate of the groove of said upper shell (1a) then is higher than the lower surface of upper shell (1a); Also be provided with a semicircular breach on the left plate of the groove of said upper shell (1a); Semicircle breach on said upper shell (1a) and the lower house (1b) is formed the through hole (1c) of a circle, and the left part of the groove of said lower house (1b) is provided with back-up block (1b-1), and said switch shaft (2) is contained in the groove of upper shell (1a); And the lower surface of said switch shaft (2) contacts with back-up block (1b-1); The left part of said switch shaft (2) stretches out outside the housing from through hole (1c), and an end of said spring (3) is against on the right side wall of groove of upper shell (1a), and the other end is against on the step at switch shaft (2) middle part; On the base plate near the groove of the lower house (1b) of right part, be provided with a conduit, said circuit board (4) is installed in the right part of the groove of lower house (1b), and the lead of said circuit board (4) stretches out outside the housing from this conduit.

3. according to the said noncontacting switch of claim 2; It is characterized in that: the upper surface of said lower house (1b) groove is provided with four joint pins (1b-2); The lower surface of said upper shell (1a) groove is provided with the connection counterbore (1a-2) corresponding with joint pin (1b-2), and joint pin (1b-2) inserted and is connected in the counterbore (1a-2) when said lower house (1b) docked with upper shell (1a).