CN206947249U - The pressure switch of high sensitivity, stable performance and service life length - Google Patents

Abstract

The utility model provides a kind of high sensitivity, the pressure switch of stable performance and service life length, wherein movable contact is located on stationary contact and is installed on conductive movable contact spring, insulated switch rod is movably arranged up and down, positioned at the top of the first elastic component and in its vertical elastic deformation range, conductive resilient element is inclined at the top of insulated switch rod and in its vertical stroke range, one end of conductive resilient element is connected with the inwall of switch gear room, the other end connects conductive movable contact spring, the pulling force abutting contact stationary contact that movable contact passes through conductive resilient element, second conducting terminal electrically connects conductive resilient element.It is preferred that conductive resilient element is extension spring.First elastic component is flexible sheet.Also include the second elastic component, preferably dish-shaped reed.Pressure switch high sensitivity, stable performance and the service life length that high sensitivity, stable performance and service life of the present utility model are grown, ingenious in design, simple for structure, manufacture is easy, and cost is low, suitable for large-scale promotion application.

Description

The pressure switch of high sensitivity, stable performance and service life length

Technical field

Switching technique field is the utility model is related to, more particularly to pressure switch technical field, in particular to one kind is sensitive The pressure switch that degree is high, stable performance and service life are grown.

Background technology

A kind of pressure protective device pipe connecting piece on existing water purifier is passed through by microswitch either two contacts Pressure caused by the elasticity of reed (phosphorus bronze sheet), the former microswitch are to realize switch closed and disconnected by switching sub- displacement Come what is be controlled, shortcoming is OP positions (Operating Position, operating position) and RP positions (Releasing Position, reset position) it is unequal, it can thus produce a MD (Movement Differential, answer gap from) Value, influences reaction sensitivity, MD values are bigger, and sensitivity is poorer.Latter is to open two contacts with insulated switch rod top to realize out Close closed and disconnected to be controlled, shortcoming is that the contact pressure of 1, contact is to lean on the elasticity of reed in itself to control, and is connect Point pressure uniformity is bad；2nd, when contact disconnects, reed can apply a constant power to insulated switch rod, can so cause absolutely Edge switchs rod and the plastic switch box of surrounding produces friction, and the life-span can greatly shorten, and easily produces plastic powders so as to dirty Contaminate to the resistance between two contacts, can so cause the bad phenomenons such as sparking.

Accordingly, it is desirable to provide a kind of pressure switch, its high sensitivity, stable performance and service life length.

Utility model content

In order to overcome it is above-mentioned in the prior art the shortcomings that, a purpose of the present utility model is to provide a kind of sensitivity The pressure switch of high, stable performance and service life length, its high sensitivity, stable performance and service life length, suitable for extensive Popularization and application.

The pressure that another object of the present utility model is to provide a kind of high sensitivity, stable performance and service life length is opened Close, its is ingenious in design, simple for structure, and manufacture is easy, and cost is low, suitable for large-scale promotion application.

To achieve the above objectives, the utility model provides the pressure of a kind of high sensitivity, stable performance and service life length Power switchs, including shell, the first conducting terminal, the second conducting terminal, insulated switch rod, fluid passage, movable contact and stationary contact, First conducting terminal and second conducting terminal are plugged on the housing, and switch gear room and stream are provided with the shell Body cavity, the switch gear room are located at the top of the fluid cavity, fluid inlet and fluid issuing, the stream are provided with the shell Body import connects the fluid issuing by the fluid cavity, and the fluid passage is vertically provided in the shell and connects institute Fluid cavity and the switch gear room are stated, the movable contact and the stationary contact are located in the switch gear room and abut contact, its Feature is, the pressure switch of described high sensitivity, stable performance and service life length also include supporting member, conductive movable contact spring, Conductive resilient element and the first elastic component, one end of first conducting terminal are located in the switch gear room, and the stationary contact is installed On one end of the first described conducting terminal, the supporting member is installed on the inwall of the switch gear room, described conductive dynamic tactile One end of piece is vertically rotatably provided on the supporting member, and the movable contact is located on the stationary contact and is installed in described lead The other end of electronic contact, first elastic component are arranged in the fluid passage and seal the fluid passage, described exhausted Edge switch rod is removably set in the fluid passage up and down, and the insulated switch rod is located at the top of first elastic component And in the vertical elastic deformation range of first elastic component, the conductive resilient element is inclined at the insulated switch The top of rod is simultaneously located in the vertical stroke range of the insulated switch rod, and one end of the conductive resilient element is less than the conduction The other end of elastic component, one end of described conductive resilient element are connected with the inwall of described switch gear room, described conductive bullet Property part the other end connect the conductive movable contact spring, the movable contact passes through described in the pulling force abutting contact of the conductive resilient element Stationary contact, second conducting terminal electrically connect the conductive resilient element.

It is preferred that the conductive resilient element is extension spring.

It is preferred that the pressure switch of described high sensitivity, stable performance and service life length also includes support member, it is described Support member is installed on the inwall of described switch gear room, and one end of described conductive resilient element is connected with the support member.

It is preferred that first elastic component is flexible sheet.

It is preferred that first elastic component is horizontally installed in the fluid passage.

It is preferred that the pressure switch of described high sensitivity, stable performance and service life length also includes the second elastic component, Second elastic component is arranged in the fluid passage and between the insulated switch rod and first elastic component, institute State the second elastic component to be located in the vertical elastic deformation range of the first described elastic component, the insulated switch rod is positioned at described the In the vertical elastic deformation range of two elastic components.

More preferably, second elastic component is dish-shaped reed.

It is preferred that first conducting terminal is L-shaped conducting terminal, one end level of the first described conducting terminal is set Put, the other end of first conducting terminal vertically plugs on the housing.

It is preferred that the relatively described conductive movable contact spring of the supporting member, close to the conductive resilient element, described conduction is dynamic to be touched One end of piece has bifurcated, and the both ends of the bifurcated are vertically rotatably provided on the supporting member, described conductive resilient element The other end wear between the both ends of the supporting member and described bifurcated.

It is preferred that the other end of the insulated switch rod close to described conductive resilient element；Described conductive resilient element The other end of the described conductive movable contact spring of other end connection；Or the other end of described conductive movable contact spring is led less than described One end of electronic contact.

The beneficial effects of the utility model essentially consist in：

1st, the movable contact of the pressure switch of high sensitivity of the present utility model, stable performance and service life length is located at stationary contact On point and it is installed on conductive movable contact spring, insulated switch rod is movably arranged up and down, positioned at the top of the first elastic component and is located at In its vertical elastic deformation range, conductive resilient element is inclined at the top of insulated switch rod and is located at its vertical stroke range Interior, one end of conductive resilient element is connected with the inwall of switch gear room, and the other end connects conductive movable contact spring, and movable contact passes through conductive bullet Property part pulling force abutting contact stationary contact, the second conducting terminal electrical connection conductive resilient element, so as to the first elastic component up towards When elastic deformation occurs to insulated switch rod the first resilient element urges insulated switch rod it is mobile upwardly toward conductive resilient element and then Causing conductive resilient element, then band moving conductive movable contact spring is upward upwardly toward the direction generation elastic deformation away from insulated switch rod Rotate and cause movable contact to depart from stationary contact, therefore, its high sensitivity, stable performance and service life length, suitable for large-scale promotion Using.

2nd, the movable contact of the pressure switch of high sensitivity of the present utility model, stable performance and service life length is located at stationary contact On point and it is installed on conductive movable contact spring, insulated switch rod is movably arranged up and down, positioned at the top of the first elastic component and is located at In its vertical elastic deformation range, conductive resilient element is inclined at the top of insulated switch rod and is located at its vertical stroke range Interior, one end of conductive resilient element is connected with the inwall of switch gear room, and the other end connects conductive movable contact spring, and movable contact passes through conductive bullet Property part pulling force abutting contact stationary contact, the second conducting terminal electrical connection conductive resilient element, so as to the first elastic component up towards When elastic deformation occurs to insulated switch rod the first resilient element urges insulated switch rod it is mobile upwardly toward conductive resilient element and then Causing conductive resilient element, then band moving conductive movable contact spring is upward upwardly toward the direction generation elastic deformation away from insulated switch rod Rotate and cause movable contact to depart from stationary contact, therefore, its is ingenious in design, simple for structure, and manufacture is easy, and cost is low, suitable for extensive Popularization and application.

These and other objects, feature and advantage of the present utility model, by following detailed descriptions, accompanying drawing and right will Try to achieve to fully demonstrate, and can be achieved by means, device and the combinations thereof specially pointed out in appended claims.

Brief description of the drawings

Fig. 1 is a specific implementation of the pressure switch that high sensitivity, stable performance and service life of the present utility model are grown The main view schematic cross-sectional view of example.

Fig. 2 is the exploded perspective schematic diagram of the specific embodiment shown in Fig. 1.

Fig. 3 is Fig. 2 close-up schematic view.

(symbol description)

1 base；2 valve bodies；3 first elastic components；4 second elastic components；5 insulated switch rods；6 switch bodies；7 switch covers；8 second Conducting terminal；9 conductive resilient elements；10 conductive movable contact springs；11 first conducting terminals；12 supporting members；13 perforation；14 stationary contacts；15 Guide limit rib；16 guiding grooves；17 locating dowels；18 positioning holes；19 screws；20 compression-joint covers；21 sealing rings；22 claws；23 is dynamic tactile Point；24 shells；25 fluid passages；26 switch gear rooms；27 fluid cavitys；28 fluid inlets；29 fluid issuings；30 support members；31 fix Hole.

Embodiment

In order to be more clearly understood that technology contents of the present utility model, described in detail especially exemplified by following examples.

Refer to shown in Fig. 1-Fig. 3, in a specific embodiment of the present utility model, high sensitivity of the present utility model, The pressure switch of stable performance and service life length is opened including shell 24, the first conducting terminal 11, the second conducting terminal 8, insulation Close rod 5, fluid passage 25, movable contact 23, stationary contact 14, supporting member 12, conductive movable contact spring 10, the bullet of conductive resilient element 9 and first Property part 3, first conducting terminal 11 and second conducting terminal 8 are plugged on the shell 24, set in the shell 24 Switch gear room 26 and fluid cavity 27 are equipped with, the switch gear room 26 is located at the top of the fluid cavity 27, is provided with the shell 24 Fluid inlet 28 and fluid issuing 29, the fluid inlet 28 connects the fluid issuing 29 by the fluid cavity 27, described Fluid passage 25 is vertically provided in the shell 24 and connects the fluid cavity 27 and the switch gear room 26, the movable contact 23 It is located at the stationary contact 14 in the switch gear room 26 and abuts contact, one end of first conducting terminal 11 is located at institute State in switch gear room 26, the stationary contact 14 is installed on one end of the first described conducting terminal 11, and the supporting member 12 is installed On the inwall of the switch gear room 26, one end of the conductive movable contact spring 10 is vertically rotatably provided on the supporting member 12, The movable contact 23 is located on the stationary contact 14 and is installed in the other end of the conductive movable contact spring 10, first elastic component 3 are arranged in the fluid passage 25 and seal the fluid passage 25, and the insulated switch rod is removably set on institute about 5 State in fluid passage 25, the insulated switch rod 5 is located at the top of first elastic component 3 and is located at first elastic component 3 Vertical elastic deformation range in, the conductive resilient element 9 is inclined at the top of the insulated switch rod 5 and positioned at described In the vertical stroke range of insulated switch rod 5, one end of the conductive resilient element 9 is less than the other end of the conductive resilient element 9, One end of described conductive resilient element 9 is connected with the inwall of described switch gear room 26, the other end of described conductive resilient element 9 The conductive movable contact spring 10 is connected, the movable contact 23 passes through stationary contact described in the pulling force abutting contact of the conductive resilient element 9 14, second conducting terminal 8 electrically connects the conductive resilient element 9.

So that the first bullet described in when upwardly toward the insulated switch rod 5 elastic deformation occurs for first elastic component 3 Property part 3 promote the insulated switch rod 5 to be moved upwardly toward the conductive resilient element 9 so that cause the conductive resilient element 9 to On be directed away from the insulated switch rod 5 direction occur elastic deformation then drive the conductive movable contact spring 10 to be rotated up making Obtain the movable contact 23 and depart from the stationary contact 14；When first elastic component 3 resets downwards, the conductive resilient element 9 is downward Reset and promote the insulated switch rod 5 to move down while drive the conductive movable contact spring 10 to rotate down so that the movable contact Stationary contact 14 described in 23 abutting contacts.

The conductive resilient element 9 can be any suitable conductive resilient element, refer to shown in Fig. 1-Fig. 3, in this practicality In a new specific embodiment, the conductive resilient element 9 is extension spring.

One end of described conductive resilient element 9 is connected with the inwall of described switch gear room 26 can be using any suitable Structure, it is preferred that the pressure switch of described high sensitivity, stable performance and service life length also includes support member 30, it is described Support member 30 is installed on the inwall of described switch gear room 26, one end of described conductive resilient element 9 and the phase of support member 30 Connection.Refer to shown in Fig. 1-Fig. 3, be extension spring in the conductive resilient element 9 in a specific embodiment of the present utility model In the case of, an end hook of the extension spring is located on the support member 30, and another end hook of the extension spring is located at conductive move and touched On piece 10.

Another end hook of the extension spring, which is located on the conductive movable contact spring 10, can use any suitable structure, refer to Shown in Fig. 1-Fig. 3, in a specific embodiment of the present utility model, perforation 13 is provided with the conductive movable contact spring 10, it is described Extension spring another end hook be located at it is described perforation 13 in.

The support member 30 can be any suitable support member, described in a specific embodiment of the present utility model Support member 30 is plastic supporting pieces, such as plastic support post.

The support member 30, which is installed on the inwall of described switch gear room 26, can use any suitable structure, refer to Shown in Fig. 1-Fig. 3, in a specific embodiment of the present utility model, the support member 30 from the inwall of described switch gear room 26 to Lower extension is formed.

The support member 30, which is installed on the inwall of described switch gear room 26, can be installed in the interior of described switch gear room 26 Any suitable position of wall, is referred to shown in Fig. 1-Fig. 3, in a specific embodiment of the present utility model, the support member 30 are installed in the position of close second conducting terminal 8 of the inwall of described switch gear room 26.

First elastic component 3 can be any suitable elastic component, refer to shown in Fig. 1-Fig. 2, in the utility model A specific embodiment in, first elastic component 3 is flexible sheet, such as rubber diaphragm.First elastic component 3 can also It is dish-shaped reed.

First elastic component 3, which is arranged in the fluid passage 25, can use any suitable structure, refer to figure Shown in 1- Fig. 2, in a specific embodiment of the present utility model, first elastic component 3 is horizontally installed on the fluid passage In 25.That is, first elastic component 3 is arranged on the cross section of the fluid passage 25.

The insulated switch rod 5 is located at the top of first elastic component 3 and positioned at the vertical bullet of first elastic component 3 Property deformation range in can use any suitable structure, refer to shown in Fig. 1-Fig. 2, of the present utility model one specific implementation In example, the pressure switch of described high sensitivity, stable performance and service life length also includes the second elastic component 4, and described second Elastic component 4 is arranged in the fluid passage 25 and between the insulated switch rod 5 and first elastic component 3, described Second elastic component 4 is located in the vertical elastic deformation range of the first described elastic component 3, and the insulated switch rod 5 is positioned at described In the vertical elastic deformation range of second elastic component 4.So as to which the insulated switch rod 5 passes through the 4 indirect position of the second elastic component In the top of first elastic component 3 and in the vertical elastic deformation range of first elastic component 3, second elasticity Part 4 is as the power transmission part between first elastic component 3 and the insulated switch rod 5.

So, first elastic component 3 upwardly toward second elastic component 4 occur elastic deformation when described in the first bullet Property part 3 promote second elastic component 4 upwardly toward the insulated switch rod 5 occur elastic deformation so that promote it is described insulation open Rod 5 is closed to move upwardly toward the conductive resilient element 9；Second elastic component 4 described in when first elastic component 3 resets downwards to Lower reset, the conductive resilient element 9 reset downwards, on the one hand promote the insulated switch rod 5 to move down, and on the other hand drive The conductive movable contact spring 10 rotates down so that stationary contact 14 described in the abutting contact of the movable contact 23.

Second elastic component 4 can be any suitable elastic component, refer to shown in Fig. 1-Fig. 2, in the utility model A specific embodiment in, second elastic component 4 is dish-shaped reed.Second elastic component 4 can also be flexible sheet, example Such as rubber diaphragm.

First conducting terminal 11 can have any suitable shape, refer to shown in Fig. 1-Fig. 3, new in this practicality In one specific embodiment of type, first conducting terminal 11 is L-shaped conducting terminal, one end of the first described conducting terminal 11 Horizontally disposed, the other end of first conducting terminal 11 is vertically plugged on the shell 24.

Second conducting terminal 8 can have any suitable shape, refer to shown in Fig. 1-Fig. 3, new in this practicality In one specific embodiment of type, second conducting terminal 8 is linear conducting terminal, is vertically plugged on the shell 24.

The supporting member 12 is installed in the inwall that described switch gear room 26 can be installed on the inwall of the switch gear room 26 Any suitable position, refer to shown in Fig. 1-Fig. 3, in a specific embodiment of the present utility model, the supporting member 12 For relatively described conductive movable contact spring 10 close to the conductive resilient element 9, one end of described conductive movable contact spring 10 has bifurcated, described The both ends of bifurcated are vertically rotatably provided on the supporting member 12, and the other end of described conductive resilient element 9 wears the branch Between the both ends of bearing member 12 and described bifurcated.

The insulated switch rod 5 can be close to the other end of described conductive resilient element 9, described conductive resilient element 9 One end or the middle part of the conductive resilient element 9, refer to shown in Fig. 1-Fig. 2, in a specific embodiment of the present utility model, institute State the other end of the insulated switch rod 5 close to described conductive resilient element 9.

The other end of described conductive resilient element 9, which connects the conductive movable contact spring 10, can connect the conductive movable contact spring 10 Any suitable position, refer to shown in Fig. 1-Fig. 3, in a specific embodiment of the present utility model, described conductive bullet Property part 9 the described conductive movable contact spring 10 of other end connection the other end.

The other end of described conductive movable contact spring 10 can be less than one end of described conductive movable contact spring 10, higher than described One end of conductive movable contact spring 10 is in the same horizontal position with one end of described conductive movable contact spring 10, refers to Fig. 1-Fig. 3 Shown, in a specific embodiment of the present utility model, the other end of described conductive movable contact spring 10 moves less than described conduction One end of contact 10.

The fluid passage 25 can be arranged in a mutually vertical manner with the fluid cavity 27, can not also be arranged in a mutually vertical manner, please Referring to shown in Fig. 1-Fig. 2, in a specific embodiment of the present utility model, the fluid passage 25 is vertical with the fluid cavity 27 Set.I.e. described fluid cavity 27 is horizontally disposed.

In order to effectively be tightly connected fluid line, refer to shown in Fig. 1-Fig. 2, in a specific embodiment of the present utility model In, sealing ring 21, such as O-ring are provided with the fluid inlet 28 and the fluid issuing 29, claw 22 passes through crimping Lid 20 is threadably engaged on the fluid inlet 28 and the fluid issuing 29 respectively.

The shell 24 can have any suitable structure, refer to shown in Fig. 1-Fig. 2, in of the present utility model one tool In body embodiment, the shell 24 includes valve body 2, switch body 6 and switch cover 7, and the fluid cavity 27 is arranged on the valve body 2 Interior, the fluid inlet 28 and the fluid issuing 29 are arranged on the both ends of the valve body 2, and the switch body 6 is arranged on described On valve body 2, the lid of switch cover 7 is located in the switch body 6 so as to be formed between the switch cover 7 and the switch body 6 The switch gear room 26, the fluid passage 25 are arranged in the valve body 2 and the switch body 6.

The switch body 6, which is arranged on the valve body 2, can use any suitable structure, refer to shown in Fig. 1-Fig. 2, In a specific embodiment of the present utility model, positioning hole 18 is provided with the valve body 2, it is fixed to be provided with the switch body 6 Position post 17, the locating dowel 17 are plugged in the positioning hole 18.

The lid of switch cover 7, which is located in the switch body 6, can use any suitable structure, refer to Fig. 2-Fig. 3 institutes Show, in a specific embodiment of the present utility model, guiding groove 16 is provided with the switch body 6, is set on the switch cover 7 There is guiding limit rib 15, the guiding limit rib 15 is plugged in the guiding groove 16.

The switch cover 7, the switch body 6 and the valve body 2 can use any suitable structure to fit together, please Referring to shown in Fig. 2-Fig. 3, in a specific embodiment of the present utility model, the switch cover 7, the switch body 6 and the valve Body 2 is worn by screw 19 and screw thread engages switch cover 7, the switch body 6 and the valve body 2 to fit together.

For the ease of pressure switch is fixed on into other positions, it is preferred that described high sensitivity, stable performance and use The pressure switch of long lifespan also includes base 1, and fixing hole 31 is provided with the base 1, and the shell 24 is fastened on the bottom Seat 1 on, refer to shown in Fig. 1-Fig. 2, in a specific embodiment of the present utility model, the shell 24 include valve body 2, open In the case of closing body 6 and switch cover 7, the valve body 2 is fastened on the base 1.

In the utility model, the second conducting terminal 8, conductive resilient element 9, conductive shake-up piece 10, movable contact 23, stationary contact 14 Normally closed loop is formed with the first conducting terminal 11.

The utility model is in use, when being for example used in water purifier or needing the equipment or product of Stress control, only Need two high-pressure water pipes distinguishing connecting fluid import 28 and fluid issuing 29, fluid is by fluid inlet 28 through fluid cavity 27 Flowed out from fluid issuing 29, when Fluid pressure is stepped up, pressure caused by fluid promotes the first elastic component 3, the first elasticity The effect that part 3 is under pressure progressively upward elastic deformation, the first elastic component 3 promote insulated switch rod 5 to move up (in the presence of the In the case of two elastic components 4, the first elastic component 3 promotes 4 upward elastic deformation of the second elastic component, and the second elastic component 4 promotes insulation Switch rod 5 moves up), insulated switch rod 5 promotes 9 upward elastic deformation of conductive resilient element, and it is upward that band moving conductive touches piece 10 Rotate and movable contact 23 and stationary contact 14 are disconnected, complete Stress control.When Fluid pressure reduces, the first elastic component 3 is downward (in the case where the second elastic component 4 be present, the second elastic component 4 resets downwards) is resetted, conductive resilient element 9 resets downwards, a side Face promotes insulated switch rod 5 to move down, and on the other hand band moving conductive movable contact spring 10 is rotated down so that movable contact 23 is against connecing Touch stationary contact 14.

When the first elastic component 3 is flexible sheet and the second elastic component 4 is dish-shaped reed, when Fluid pressure is stepped up When, pressure caused by fluid promotes the upward elastic deformation of flexible sheet, and the effect that flexible sheet is under pressure progressively expands upwards, Flexible sheet promotes dish-shaped reed upwardly-deformed, and when pressure reaches a timing, dish-shaped reed is upwardly-deformed to exceed a certain amount, dish Shape reed moment promotes insulated switch rod 5 to move up, and instantaneously 9 one pressure of conductive resilient element, conductive resilient element 9 are upspringed Property Zona transformans moving conductive movable contact spring 10 be rotated up so as to drive movable contact 23 and stationary contact 14 to disconnect, complete Stress control.When When Fluid pressure reduces, the downward Stepwize Shrink of flexible sheet, conductive resilient element 9 resets downwards, on the one hand promotes insulated switch rod 5 Move down, and then promote the dish-shaped downward elastic deformation of reed, when pressure is reduced to a timing, dish-shaped reed deforms more than downwards A certain amount, dish-shaped reed momentary recovery, on the other hand band moving conductive movable contact spring 10 rotate down so that movable contact 23 is against connecing Touch stationary contact 14.

Therefore, when the first elastic component 3 is flexible sheet and the second elastic component 4 is dish-shaped reed, when fluid passes through this During pressure switch, when pressure rise, flexible sheet motion is promoted, the pressure transmission of flexible sheet gives dish-shaped reed, works as dish When reed is deformed to a certain extent, moment, switching rod 5 was to conductive resilient element 9 and one to 5 one thrusts of switching rod The thrust of individual moment, while conductive resilient element 9, to conductive movable contact spring 10 and the thrust of a moment, contact is in conductive resilient element Disconnect, switch off in the presence of 9.

So as to which the utility model is fulcrum with the first conducting terminal 11, and conductive movable contact spring 10 is arranged on fulcrum, then will One end connection support member 30 of conductive resilient element 9, the other end connects conductive movable contact spring 10, under the active force of conductive resilient element 9, Insulated switch rod 5 is in the case of no stress, and two contacts are normally closed, and contact pressure size is completely by conductive resilient element 9 What pulling force determined, this ensure that the uniformity of contact pressure；Certain pressure, pressure can be produced when fluid passes through valve body 2 When reaching certain (such as 0.25 ± 0.02MPa), promote dish-shaped reed moment to upspring by flexible sheet, pushed away by insulated switch rod 5 Moving conductive movable contact spring 10 flicks, and two contacts disconnect.When pressure is reduced to certain (such as 0.15 ± 0.02MPa), dish-shaped reed Momentary recovery, two contacts are closed at.Acted on using the moment spring of dish-shaped reed, along with the active force of insulated switch rod 5 is applied It is added on conductive movable contact spring 10, therefore MD=0；The contact pressure of two contacts is controlled by the pulling force of conductive resilient element 9, is connect Point pressure homogeneous constant, and insulated switch rod 5 acts on the other end of conductive resilient element 9, therefore active force is small, insulated switch rod 5 with switch body 6 caused by frictional force very little, greatly improve so as to the life-span；Switch off closure flexibly, disconnect closure it is clear and melodious, Life-span is multiplied, and working life can be more than 200,000 times.In addition, the utility model is simple in construction, easy to assembly.

To sum up, pressure switch high sensitivity, the performance of high sensitivity of the present utility model, stable performance and service life length Stable and service life length, ingenious in design, simple for structure, manufacture is easy, and cost is low, suitable for large-scale promotion application.

As can be seen here, the purpose of this utility model is achieved completely and effectively.Function of the present utility model and Structural principle is shown and illustrated in embodiment, and under without departing substantially from the principle, embodiment can make any modification.Institute So that the utility model includes all variant embodiments based on claim spirit and right.

Claims (10)

1. the pressure switch of a kind of high sensitivity, stable performance and service life length, including shell, the first conducting terminal, second Conducting terminal, insulated switch rod, fluid passage, movable contact and stationary contact, first conducting terminal and second conducting end Son is plugged on the housing, and switch gear room and fluid cavity are provided with the shell, and the switch gear room is located at the fluid cavity Top, fluid inlet and fluid issuing are provided with the shell, and the fluid inlet passes through the fluid cavity and connects the stream Body exports, and the fluid passage is vertically provided in the shell and connects the fluid cavity and the switch gear room, described dynamic tactile Point and the stationary contact are located in the switch gear room and abut contact, it is characterised in that described high sensitivity, performance are steady The pressure switch of fixed and service life length also includes supporting member, conductive movable contact spring, conductive resilient element and the first elastic component, and described the One end of one conducting terminal is located in the switch gear room, and the stationary contact is installed on one end of the first described conducting terminal, The supporting member is installed on the inwall of the switch gear room, and one end of the conductive movable contact spring is vertically rotatably provided in the branch In bearing member, the movable contact is located on the stationary contact and is installed in the other end of the conductive movable contact spring, first elasticity Part is arranged in the fluid passage and seals the fluid passage, and the insulated switch rod is removably set on the stream up and down In body passage, the insulated switch rod is located at the top of first elastic component and positioned at the vertical elastic of first elastic component In deformation range, the conductive resilient element is inclined at the top of the insulated switch rod and positioned at the insulated switch rod In vertical stroke range, one end of the conductive resilient element is less than the other end of the conductive resilient element, described electrically conductive elastic One end of part is connected with the inwall of described switch gear room, and the other end connection of described conductive resilient element is described conductive dynamic tactile Piece, the movable contact are electrically connected by stationary contact described in the pulling force abutting contact of the conductive resilient element, second conducting terminal Connect the conductive resilient element.

2. the pressure switch of high sensitivity as claimed in claim 1, stable performance and service life length, it is characterised in that institute It is extension spring to state conductive resilient element.

3. the pressure switch of high sensitivity as claimed in claim 1, stable performance and service life length, it is characterised in that institute The pressure switch of high sensitivity, stable performance and the service life length stated also includes support member, and the support member is installed in described Switch gear room inwall on, one end of described conductive resilient element is connected with the support member.

4. the pressure switch of high sensitivity as claimed in claim 1, stable performance and service life length, it is characterised in that institute It is flexible sheet to state the first elastic component.

5. the pressure switch of high sensitivity as claimed in claim 1, stable performance and service life length, it is characterised in that institute The first elastic component is stated to be horizontally installed in the fluid passage.

6. the pressure switch of high sensitivity as claimed in claim 1, stable performance and service life length, it is characterised in that institute The pressure switch of high sensitivity, stable performance and the service life length stated also includes the second elastic component, and second elastic component is set Put in the fluid passage and between the insulated switch rod and first elastic component, second elastic component is located at In the vertical elastic deformation range of the first described elastic component, the insulated switch rod is located at the vertical bullet of second elastic component In property deformation range.

7. the pressure switch of high sensitivity as claimed in claim 6, stable performance and service life length, it is characterised in that institute It is dish-shaped reed to state the second elastic component.

8. the pressure switch of high sensitivity as claimed in claim 1, stable performance and service life length, it is characterised in that institute It is L-shaped conducting terminal to state the first conducting terminal, and one end of the first described conducting terminal is horizontally disposed with, first conducting terminal The other end vertically plug on the housing.

9. the pressure switch of high sensitivity as claimed in claim 1, stable performance and service life length, it is characterised in that institute State the relatively described conductive movable contact spring of supporting member has bifurcated close to the conductive resilient element, one end of described conductive movable contact spring, The both ends of the bifurcated are vertically rotatably provided on the supporting member, and the other end of described conductive resilient element wears the branch Between the both ends of bearing member and described bifurcated.

10. the pressure switch of high sensitivity as claimed in claim 1, stable performance and service life length, it is characterised in that institute State the other end of the insulated switch rod close to described conductive resilient element；The other end connection of described conductive resilient element is described to be led The other end of electronic contact；Or the other end of described conductive movable contact spring is less than one end of described conductive movable contact spring.