CN203150474U

CN203150474U - Pressure switch

Info

Publication number: CN203150474U
Application number: CN 201320094280
Authority: CN
Inventors: 刘晓红
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-03-01
Filing date: 2013-03-01
Publication date: 2013-08-21
Anticipated expiration: 2023-03-01

Abstract

The utility model discloses a pressure switch, which comprises a shell and a pressure-sensitive module. The pressure-sensitive module comprises a pressure joint with a pressure boosting hole, and a pressure diaphragm. The pressure joint is arranged at the lower end of the shell. The pressure diaphragm arranged on the pressure joint is provided with a micro switch module connected with the shell. The micro switch module comprises a polygonal upright post arranged on the upper end thereof, and a terminal set. A push rod is arranged between the micro switch module and the pressure diaphragm. According to the technical scheme of the utility model, the pressure switch is reasonably improved in structure and is characterized in that the micro switch module and the polygonal upright post are matched with each other and are threadedly connected with each other. In this way, the micro switch module can be unscrewed to be released out of the shell only by means of the polygonal upright post, and the replacement of the parts of the micro switch module can be realized. Therefore, the assembly and disassembly of the micro switch and related parts is facilitated. The pressure switch is convenient in maintenance, and the operation reliability among the micro switch, the pressure-sensitive module and the shell is improved.

Description

A kind of pressure switch

Technical field

The utility model relates to the pressure switch field.

Background technology

The electric equipment of using for fluid system, usually all need pressure switch to come the pressure of monitoring fluid system, generally the outer mechanical force drive actuated element that produces by pressure is used for the action reed with masterpiece, when being displaced to critical point, the action reed produces instantaneous operation, control moving contact and fixed contact are switched on or switched off fast, common pressure switch comprises housing and stretches out the outer button of housing, but also includes moving plate, binding post, reed and transmission levers in the housing.Common pressure switch in the market, volume ratio is huger, the structure more complicated, relative cost is higher.Therefore, need provide a kind of new technical scheme to solve the problems referred to above.

Summary of the invention

In order to overcome the deficiencies in the prior art, the utility model provide a kind of install and use easier, the pressure control performance is more stable, the pressure switch of the wider model of pressure control.

The technical scheme that its technical problem that solves the utility model adopts is:

A kind of pressure switch, comprise housing and pressure-sensitive assembly, wherein pressure-sensitive assembly comprises compression fittings and the pressure-sensitive diaphragm of bringing the pressure hole into, described compression fittings is arranged on the housing lower end, described pressure-sensitive diaphragm is arranged on the compression fittings, described pressure-sensitive diaphragm is provided with the sensitive switch module that is connected with housing, and described sensitive switch module comprises polygon column and the binding post group that is arranged on the upper end, is provided with push rod between described sensitive switch module and the pressure-sensitive diaphragm.

In order to make switch control more convenient, described binding post group comprises normally closed terminal, Chang Kaiduan and common point terminal, the lower end of wherein said common point terminal is provided with the reed that stretches to normally closed terminal bottom direction, the end of this reed is the common point contact point, and the bottom of described normally closed terminal and normal beginning extends to the both sides of common point contact point respectively.

For the ease of regulating sensitivity and the operating pressure of pressure switch, the inboard of described polygon column is provided with cavity, and the upper end of described push rod is stretched in the cavity of polygon column, is disposed with spring and pressure regulating screw on the described push rod from top to bottom.

For the ease of installation and the work of push rod, described push rod comprises epimere cylinder, stage casing cylinder and hypomere cylinder, and wherein said epimere cylinder stretches into the polygon column, the described hypomere cylinder diaphragm that withstands pressure.

For the moving direction of firm push rod, described pressure-sensitive diaphragm is provided with the baffle plate of band baffle plate through hole, avoids the displacement of push rod lower end.

For the ease of fine setting and the prevention fatigue deformation of reed shape, described reed is provided with the bending position in the junction with the binding post group.

In order to make the easier jack-up reed of push rod, the bottom of described reed is set to circular, includes external arc and circular hole.

For the ease of the installation of parts, the arranged outside of the inboard of described housing and sensitive switch module has thread set.

Influence the switch operate as normal in order to prevent that steam from entering from the lower end of binding post group, described sensitive switch module is provided with watertight composition.

In order to prevent that steam from entering from the lower end of sensitive switch module, be provided with sealing ring between described sensitive switch module and the pressure-sensitive diaphragm.

The beneficial effects of the utility model are: this pressure switch is by the rational structure transformation, the sensitive switch module and the polygon column that particularly are threaded match, only need to screw out the sensitive switch module and change from housing by the polygon column parts of sensitive switch module, convenient for assembly, dismounting sensitive switch and associated component, be convenient to maintenance and the maintenance of pressure switch, strengthened the reliability between sensitive switch and pressure-sensitive assembly and the shell, improved the performance of anti-mechanical oscillation, and pressure switch can be by the control of the pressure regulating screw on polygon column sensitivity, more convenient user pressure regulation as required, improve the adaptability of pressure switch, be beneficial to and apply, good use value is arranged.

Description of drawings

Below in conjunction with drawings and Examples the utility model is further specified.

Fig. 1 is that master of the present utility model looks cutaway view;

Fig. 2 is that the master of sensitive switch module section in the utility model looks cutaway view;

Fig. 3 is the upward view of sensitive switch module section in the utility model;

Fig. 4 is vertical view of the present utility model;

Fig. 5 is left view of the present utility model;

Fig. 6 is that the master of pressure-sensitive assembly looks cutaway view in the utility model.

Embodiment

With reference to Fig. 1～Fig. 6.A kind of pressure switch, comprise housing 1 and pressure-sensitive assembly 20, wherein pressure-sensitive assembly 20 comprises compression fittings 2 and the pressure-sensitive diaphragm 21 of bringing the pressure hole into, described compression fittings 2 is arranged on housing 1 lower end, described pressure-sensitive diaphragm 21 is arranged on the compression fittings 2, and fluid enters and transmit pressure to pressure-sensitive diaphragm by the entrance pressure hole of compression fittings 2.Described pressure-sensitive diaphragm 21 is provided with the sensitive switch module 3 that is connected with housing 1, and the arranged outside of the inboard of wherein said housing 1 and sensitive switch module 3 has thread set 11.Described sensitive switch module 3 comprises polygon column 4 and the binding post group 5 that is arranged on the upper end, can be sensitive switch module 3 along thread set 11 precession housings 1 by polygon column 4.Also be provided with push rod 6 as trigger between described sensitive switch module 3 and the pressure-sensitive diaphragm 21, thus can be 3 work of push rod 6 jack-up control sensitive switch module when pressure-sensitive diaphragm 21 is subjected to upward pressure.

The binding post group 5 of described sensitive switch module 3 comprises normally closed terminal 51, Chang Kaiduan 52 and common point terminal 53, and the lower end of wherein said common point terminal 53 is provided with the reed 54 that stretches to normally closed terminal 51 bottom directions.The end of this reed 54 is common point contact point 55, and reed 54 is provided with bending position 56 in the junction with binding post group 5, and the bottom of described reed 54 is set to circular, comprises external arc 57 and circular hole 58.Wherein bending position 56 is conducive to the fine setting of reed 54 shapes and prevention fatigue deformation, and the bottom of reed 54 is provided with the circular circular hole 58 of push rod 6 from annulus that be conducive to and passes, and is convenient to push rod 6 and installs.The bottom of described normally closed terminal 51 and normal beginning 52 extends to the both sides of common point contact point 55 respectively.When common point contact point 55 contacted with normally closed terminal 51, common point terminal 53 was communicated with normally closed terminal 51; When common point contact point 55 was connected with Chang Kaiduan 52, common point terminal 53 was communicated with Chang Kaiduan 52.Described pressure-sensitive diaphragm 21 is provided with the baffle plate 8 of band baffle plate through hole 81.

Be provided with push rod 6 between described sensitive switch module 3 and the pressure-sensitive diaphragm 21.Push rod 6 is used for triggering sensitive switch, comprises epimere cylinder 61, stage casing cylinder 62 and hypomere cylinder 63.Wherein epimere cylinder 61 inserts the circular hole 58 of reed 54 and stretches in the polygon column 4; Stage casing cylinder 62 withstands reed 54, guarantees push rod 6 energy jack-up reeds 54; Hypomere cylinder 63 then inserts 81 li of the through holes of baffle plate 8 and the diaphragm 21 that withstands pressure, and the moving direction of firm push rod 6 is avoided the displacement of push rod 6 lower ends.

The inboard of described polygon column 4 is provided with cavity, the upper end of described push rod 6 is stretched in the cavity of polygon column 4, be disposed with spring 41 and pressure regulating screw 42 on the described push rod 6 from top to bottom, the thrust of the 41 pairs of push rods 6 of position-controllable spring processed by regulating pressure regulating screw 42, and then the sensitivity of by-pass cock and operating pressure.

Described sensitive switch module 3 is provided with watertight composition 7.Be provided with sealing ring 9 between described sensitive switch module 3 and the pressure-sensitive diaphragm 21.Watertight composition 7 and sealing ring 9 cooperations prevent that steam from entering switch from the lower end of binding post group 5 and the bottom of sensitive switch module 3, avoids occurring accidents such as short circuit, electric leakage.

When real work, fluid pressure in the electric equipment pipeline raises, and fluid enters from the entrance pressure hole of compression fittings 2 and pressure-sensitive diaphragm 21 is produced thrusts.Pressure-sensitive diaphragm 21 can produce kick displacement or mild displacement when sensing the operating pressure value of setting, again to push rod 6 applied thrusts, make 6 pairs of reeds of push rod 54 produce thrust upwards.When the power to reed 54 is enough big, when the pressure that namely enters compression fittings 2 was enough big, reed 54 is the top upwards, and common point contact point 55 and Chang Kaiduan 52 are connected, thereby realized being communicated with between common point terminal 53 and Chang Kaiduan 52; Otherwise, when the power to reed 54 diminishes, namely the fluid pressure in the electric equipment pipeline reduces, the pressure that makes fluid impose on pressure-sensitive diaphragm 21 reduces, when pressure-sensitive diaphragm 21 is sensed the reseat pressure value of setting, just reset to initial position immediately and control common point contact point 55 and separate with Chang Kaiduan 52 to change with normally closed terminal 51 and contact, realization common point terminal 53 is communicated with normally closed terminal 51, thus output switching signal.

According to above-mentioned principle, the utility model can also carry out suitable change and modification to above-mentioned execution mode, and for example the particular location of normally closed terminal 51, Chang Kaiduan 52 and common point terminal 53 distributes shape of reed 54 etc.And the name of some parts does not should be understood to the limitation into the application's protection range just to the understanding that makes things convenient for everybody to present technique yet.Therefore, the embodiment that discloses and describe above the utility model is not limited to also should fall in the protection range of claim of the present utility model modifications and changes more of the present utility model.

Through facts have proved, this pressure switch matches by sensitive switch module 3 and the polygon column 4 that is threaded, only need to screw out sensitive switch module 3 and change from housing 1 by polygon column 4 parts of sensitive switch module 3, be convenient to maintenance and the maintenance of pressure switch, and pressure switch can be by the pressure regulating screw 42 control sensitivity on the polygon column 4, more convenient user pressure regulation as required, the adaptability of raising pressure switch, be beneficial to and apply, good use value is arranged.

Claims

1. pressure switch, comprise housing (1) and pressure-sensitive assembly (20), wherein pressure-sensitive assembly (20) comprises compression fittings (2) and the pressure-sensitive diaphragm (21) of bringing the pressure hole into, described compression fittings (2) is arranged on housing (1) lower end, described pressure-sensitive diaphragm ([1] 21) is arranged on the compression fittings (2), it is characterized in that: described pressure-sensitive diaphragm (21) is provided with the sensitive switch module (3) that is connected with housing (1), described sensitive switch module (3) comprises polygon column (4) and the binding post group (5) that is arranged on the upper end, is provided with push rod (6) between described sensitive switch module (3) and the pressure-sensitive diaphragm (21).

2. a kind of pressure switch according to claim 1, it is characterized in that: described binding post group (5) comprises normally closed terminal (51), Chang Kaiduan (52) and common point terminal (53), the lower end of wherein said common point terminal (53) is provided with the reed (54) that stretches to normally closed terminal (51) bottom direction, the end of this reed (54) is common point contact point (55), and the bottom of described normally closed terminal (51) and normal beginning (52) extends to the both sides of common point contact point (55) respectively.

3. a kind of pressure switch according to claim 1, it is characterized in that: the inboard of described polygon column (4) is provided with cavity, the upper end of described push rod (6) is stretched in the cavity of polygon column (4), is disposed with spring (41) and pressure regulating screw (42) on the described push rod (6) from top to bottom.

4. a kind of pressure switch according to claim 1, it is characterized in that: described push rod (6) comprises epimere cylinder (61), stage casing cylinder (62) and hypomere cylinder (63), wherein said epimere cylinder (61) stretches into polygon column (4), described hypomere cylinder (63) diaphragm (21) that withstands pressure.

5. a kind of pressure switch according to claim 1 is characterized in that: described pressure-sensitive diaphragm (21) is provided with the baffle plate (8) of band baffle plate through hole (81).

6. a kind of pressure switch according to claim 2, it is characterized in that: described reed (54) is provided with bending position (56) in the junction with binding post group (5).

7. a kind of pressure switch according to claim 2, it is characterized in that: the bottom of described reed (54) is set to circular, includes external arc (57) and circular hole (58).

8. a kind of pressure switch according to claim 1, it is characterized in that: the arranged outside of the inboard of described housing (1) and sensitive switch module (3) has thread set (11).

9. a kind of pressure switch according to claim 1, it is characterized in that: described sensitive switch module (3) is provided with watertight composition (7).

10. a kind of pressure switch according to claim 1 is characterized in that: be provided with sealing ring (9) between described sensitive switch module (3) and the pressure-sensitive diaphragm (21).