CN208796904U - Low tension switch - Google Patents

Abstract

The utility model discloses a kind of low tension switches, including single-pass pedestal, there is fluid channel in single-pass pedestal, through-hole is arranged in the middle part of fluid channel, epithelium sealing ring is arranged in the top of through-hole, pressure chamber is formed between through-hole below epithelium sealing ring, executing agency is set above epithelium sealing ring, executing agency includes butterfly reed, butterfly reed pressing ring, mandril, first terminal and Second terminal, first terminal includes first contact point and first switch terminal, Second terminal includes the second contact point, second switch terminal and terminal springs, butterfly reed can deformation occurs when epithelium sealing ring imposes certain pressure to it, mandril moves up and down and pushes terminal springs with the deformation of butterfly reed, first contact point is set to separate or be closed with the second contact point.The utility model, which provides one kind low tension switch when cutting off the water or hydraulic pressure deficiency and will disconnect machine, is automatically stopped work automatic protection circuit, and need not adjust after assembling, low tension switch with high accuracy.

Description

Low tension switch

Technical field

The utility model relates to water dispenser, Drinking fountain technical field, especially a kind of low tension switch.

Background technique

Water pressure switch is a kind of variation by hydraulic pressure to control the device of Push And Release, when reaching design by measuring pressure When pressure value, pressure switch can trip, and transmit signal equal to the disconnection (leaving the state being originally closed) usually said.Existing water The structure of pressure switch, inside are one switch of installation to transmit signal.

Existing water pressure switch generally comprises: fluid channel, and fluid channel is located at valve inner, and both ends pass through fastly respectively It connects welding lid (or nut cap) and connects the components such as claw, O-ring fastly and form fast interface.

Motion process: water flow applies pressure, epithelium sealing ring to epithelium sealing ring through current deflecting hole by fluid channel Extend after stress to the direction of pressing plate, when the force value is greater than spring force value, springboard head is moved upwards, spring-compressed, switch On the sub- stress of switch inwardly move, switch disconnect；Signal is transmitted, when force value is less than spring force value, spring-return, springboard township Lower movement, switch are moved out, are closed the switch, and transmit signal.

It due to the limitation of structure feature, especially switchs, when pressure reaches certain value, is equal to the meeting in critical state Break when generation non-disconnected state, influences product quality, and precision is low, error is 20% or so.

Utility model content

In view of the defect of the above-mentioned prior art, the purpose of this utility model is that: a kind of cutting off the water or hydraulic pressure is insufficient is provided When low tension switch will disconnect machine and be automatically stopped work automatic protection circuit, precision is high, the low tension switch without adjusting.

The technical solution of the utility model is: a kind of low tension switch, including the single-pass for connecting with fluid circuit Pedestal, there is the fluid channel being connected with fluid circuit in the single-pass pedestal, and through-hole, institute is arranged in the middle part of the fluid channel The top setting epithelium sealing ring of through-hole is stated, forms pressure chamber, the epithelium sealing ring between through-hole below epithelium sealing ring Change with fluid channel fluid pressure and change, setting can be held automatically according to the variation of hydraulic pressure above the epithelium sealing ring The executing agency that is opened or closed of row is arranged with pressure switch lid outside the executing agency, and the executing agency includes butterfly spring Piece, butterfly reed pressing ring, mandril, first terminal and Second terminal, the first terminal include first contact point and first switch Terminal, the Second terminal include the second contact point, second switch terminal and terminal springs, and it is close that the butterfly reed is placed in epithelium At the side of Fluid pressure, the mandril is slideably positioned between butterfly reed and terminal springs for seal, butterfly reed energy Enough when epithelium sealing ring imposes certain pressure to it, deformation occurs, and the mandril moves up and down simultaneously with the deformation of butterfly reed Terminal springs are pushed, so that first contact point be made to separate or close up with the second contact point.

In above-mentioned low tension switch, the first terminal and Second terminal are placed in the pressure switch lid, and described One end of one terminal and Second terminal is extend out to outside pressure switch lid.

In above-mentioned low tension switch, the butterfly reed pressing ring is placed between epithelium sealing ring and butterfly reed, described The hole passed through for mandril is opened up in the middle part of butterfly reed pressing ring.

In above-mentioned low tension switch, the fast interface of setting in the single-pass pedestal, the fast interface includes nut cap, dress Ligand chip assembly and O-ring, the nut cap are sheathed on assembly chip assembly one end, the assembly chip assembly and single-pass Pedestal clamping, the O-ring are placed between assembly chip assembly and single-pass pedestal.

In above-mentioned low tension switch, the assembly chip assembly includes chipware, card ring and retainer ring, the chipware The lug boss that outer wall setting is engaged by clamping with single-pass pedestal, the card ring set are set on retainer ring, and the card ring and retainer ring are equal It is installed on chipware bottom end.

In above-mentioned low tension switch, the pressure switch lid is fixedly connected with single-pass pedestal by multiple bolts.

The beneficial effects of the utility model are:

1, the executing agency being opened or closed can be executed automatically according to the variation of hydraulic pressure by setting, improves precision, filled Without saving the regulating time after assembling after matching, production capacity is improved, is reduced costs.

2, setting epithelium sealing ring is seal isolation effect to be played due to epithelium sealing ring, while epithelium sealing ring is with fluid Inner fluid passage pressure change and push butterfly reed, butterfly reed pushes first contact point to connect with second with the variation of pressure The disconnection and the function of closure for realizing low tension switch is opened or closed in contact.

3, the fast interface being made of gland, assembly chip assembly and O-ring is set in single-pass pedestal, utilizes assembly The case where body chip assembly and bilateral pedestal are clamped, assembly chip assembly are avoided to rotate in bilateral pedestal, by setting Setting O-ring further keeps structure between assembly chip assembly and bilateral pedestal more firm close.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of the utility model.

Fig. 2 is the configuration schematic diagram of the utility model.

Fig. 3 is the structural schematic diagram of assembly chip assembly in the utility model.

Fig. 4 is the structural schematic diagram of butterfly reed pressing ring in the utility model.

In figure: 100, single-pass pedestal；120, epithelium sealing ring；130, groove；210, nut cap；220, assembly chipset Part；221, chipware；2211, lug boss；222, card ring；223, retainer ring；230, O-ring；310, butterfly reed；320, mandril； 330, butterfly reed pressing ring；400, pressure switch lid；410, first terminal；411, first contact point；412, first switch end Son；420, Second terminal；421, the second contact point；422, second switch terminal；423, terminal springs；500, bolt.

Specific embodiment

For it is relatively intuitive, be fully understood by the technical solution of the utility model, now just combine the progress of the utility model attached drawing Unrestricted feature description is as follows:

As shown in Figures 1 to 4, a kind of low tension switch, including the single-pass pedestal 100 for being connect with fluid circuit, single-pass There is the fluid channel being connected with fluid circuit in pedestal 100, through-hole is arranged in the middle part of fluid channel, and skin is arranged in the top of through-hole Film sealing ring 120, forms pressure chamber between the lower section of epithelium sealing ring 120 and through-hole, epithelium sealing ring 120 in fluid channel with flowing Body change in pressure, setting can be opened or closed according to the variation of hydraulic pressure is automatic to execute above epithelium sealing ring 120 Executing agency is arranged with pressure switch lid 400 outside executing agency.

Specifically, pressure switch lid 400 is fixedly connected with single-pass pedestal 100 by multiple bolts 500.

Preferably, four are set by bolt 500 in the utility model, to be fixed on pressure switch lid 400 preferably It is at low cost easy to operate using the fixation of bolt 500 and for consideration easy to disassemble on single-pass pedestal 100.

Executing agency includes butterfly reed 310, butterfly reed pressing ring 330, mandril 320, first terminal 410 and second end Son 420, first terminal 410 include first contact point 411 and first switch terminal 412, and Second terminal 420 includes the second contact point 421, second switch terminal 422 and terminal springs 423, butterfly reed 310 are placed in epithelium sealing ring 120 backwards to Fluid pressure At side, mandril 320 is slideably positioned between butterfly reed 310 and terminal springs 423.

Butterfly reed 310 can deformation occurs when epithelium sealing ring 120 imposes certain pressure to it, and mandril 320 is with butterfly The deformation of shape reed 310 and move up and down and push terminal springs 423, to make first contact point 411 and the second contact point 421 separation or closure.

Specifically, first terminal 410 and Second terminal 420 are placed in pressure switch lid 400, first terminal 410 and second One end of terminal 420 is extend out to outside pressure switch lid 400.

Specifically, butterfly reed pressing ring 330 is placed between epithelium sealing ring 120 and butterfly reed 310, butterfly reed pressing ring 330 middle parts open up the hole passed through for mandril 320.

Specifically, the fast interface of setting in single-pass pedestal 100, fast interface includes nut cap 210, assembly chip assembly 220 and O-ring 230, nut cap 210 is sheathed on 220 one end of assembly chip assembly, assembly chip assembly 220 and single-pass pedestal 100 clampings, O-ring 230 are placed between assembly chip assembly 220 and single-pass pedestal 100, further make assembly chip assembly Structure is more firm close between 220 and single-pass pedestal 100.

Specifically, assembly chip assembly 220 includes chipware 221, card ring 222 and retainer ring 223, the outer wall of chipware 221 It is arranged and connects the lug boss 2211 of cooperation with single-pass pedestal card 100, likewise, is provided with adaptation in 100 corresponding position of single-pass pedestal Groove 130,130 quantity of groove is consistent with the quantity of lug boss 2211.

Card ring 222 is sheathed on retainer ring 223, and card ring 222 and retainer ring 223 are mounted on 221 bottom end of chipware.It utilizes Assembly chip assembly 220 and single-pass pedestal 100 are clamped, and assembly chip assembly 220 is avoided to occur in single-pass pedestal 100 The case where rotation, to influence the running of low tension switch.

That is, epithelium sealing ring 120 plays seal isolation effect, while epithelium sealing ring 120 is in fluid channel Change in fluid pressure and push butterfly reed 310, change butterfly reed 310,310 shoulder of butterfly reed with the variation of pressure Switch is born to disconnect in the function of closure.

When cutting off the water or liquid or gas enter by fluid line the fluid in single-pass pedestal 100 when hydraulic pressure deficiency Channel rises to certain pressure due to gradually rising for hydraulic pressure, and the camber of butterfly reed 310 generates the variation of matter, butterfly spring The effect of 310 compression power of piece curves plain film, while butterfly reed 310 rises promotion mandril 320, and mandril 320 rises promote-side bullet Spring 423 separates first contact point 411 and the second contact point 421, forms closed state.

Conversely, as the gradually decline of hydraulic pressure, drops to certain pressure, the decline of butterfly reed 310 restPoses, Mandril 320 is similarly displaced downwardly to home position at this time, and terminal springs 423 restore to the original state, and contacts first contact point 411 and second Point 421 also restores to the original state, and forms initial off-state.

It is designed in this way, low tension switch, which can disconnect machine automatically and stop working, when cutting off the water or hydraulic pressure deficiency then protects Circuit.The utility model precision is high, and without adjusting, the regulating time after saving assembly improves production capacity, reduces costs.

Certainly, the above is only the preferred embodiments of the present utility model only, and therefore, it does not limit the patents of the utility model Range, all with the utility model specification and schema content institute, simply modification and equivalent structure change for it, should all similarly wrap Within scope of patent protection contained in the utility model.

Claims (6)

1. a kind of low tension switch, including the single-pass pedestal for being connect with fluid circuit, have in the single-pass pedestal and fluid hose Through-hole is arranged in the fluid channel that road is connected, the middle part of the fluid channel, and epithelium sealing ring, skin is arranged in the top of the through-hole Pressure chamber is formed below film sealing ring between through-hole, the epithelium sealing ring changes with fluid channel fluid pressure and become Change, setting can execute the executing agency being opened or closed automatically according to the variation of hydraulic pressure above the epithelium sealing ring, described Pressure switch lid is arranged with outside executing agency, it is characterised in that: the executing agency include butterfly reed, butterfly reed pressing ring, Mandril, first terminal and Second terminal, the first terminal include first contact point and first switch terminal, the Second terminal Including the second contact point, second switch terminal and terminal springs, the butterfly reed is placed in epithelium sealing ring backwards to Fluid pressure Side at, the mandril is slideably positioned between butterfly reed and terminal springs, and butterfly reed can be in epithelium sealing ring pair Deformation occurs when it imposes certain pressure, and the mandril moves up and down and push terminal springs with the deformation of butterfly reed, from And first contact point is made to separate or close up with the second contact point.

2. low tension switch according to claim 1, which is characterized in that the first terminal and Second terminal are placed in the pressure In power switch cover, one end of the first terminal and Second terminal is extend out to outside pressure switch lid.

3. low tension switch according to claim 1, which is characterized in that the butterfly reed pressing ring be placed in epithelium sealing ring with Between butterfly reed, the hole passed through for mandril is opened up in the middle part of the butterfly reed pressing ring.

4. low tension switch according to claim 1, which is characterized in that the fast interface of setting in the single-pass pedestal, it is described Fast interface includes nut cap, assembly chip assembly and O-ring, and the nut cap is sheathed on assembly chip assembly one end, described Assembly chip assembly and single-pass pedestal are clamped, and the O-ring is placed between assembly chip assembly and single-pass pedestal.

5. low tension switch according to claim 4, which is characterized in that the assembly chip assembly includes chipware, card Ring and retainer ring, the lug boss that the outer wall setting of the chipware is engaged by clamping with single-pass pedestal, the card ring set are set on retainer ring, The card ring and retainer ring are mounted on chipware bottom end.

6. low tension switch according to claim 1, which is characterized in that the pressure switch lid passes through multiple with single-pass pedestal Bolt is fixedly connected.