CN202473748U - Two-speed temperature control power switch - Google Patents
Two-speed temperature control power switch Download PDFInfo
- Publication number
- CN202473748U CN202473748U CN 201220027245 CN201220027245U CN202473748U CN 202473748 U CN202473748 U CN 202473748U CN 201220027245 CN201220027245 CN 201220027245 CN 201220027245 U CN201220027245 U CN 201220027245U CN 202473748 U CN202473748 U CN 202473748U
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- China
- Prior art keywords
- temperature control
- movable contact
- shell fragment
- contact flat
- speed temperature
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Abstract
A two-speed temperature control power switch comprises a switch housing, a sensor housing, a pedestal, a bimetallic strip, a push rod, a moving contact and a fixed contact. A ladder stand is arranged under the inner cavity of the sensor housing and is used for placing the bimetallic strip. The bimetallic strip is a round strip and comprises an active metal layer and a passive metal layer. The active metal layer and the passive metal layer are tightly combined to be a two-layer structure. The upper surface of the active metal layer and the lower surface of the passive metal layer are cambered surfaces recessing from the active layer to the passive layer. The two-speed temperature control power switch helps to ensure that the bimetallic strip can deform rapidly, allows the deformation to be accurately transmitted to a switch contact, enables a contact connection circuit to be opened and closed, and enables an open circuit to be controlled.
Description
Technical field
The utility model relates to a kind of contactor, and particularly relating to a kind of is the temperature detect switch (TDS) of trigger condition with the temperature.
Background technology
The temperature control mains switch is usually mainly by contact switch, drive disk assembly, and transducer, pedestal and housing are formed.When transducer is experienced variations in temperature, receive the interference of environment for use easily, cause and trigger instability when reaching specified temp, under the environment frequent in variations in temperature, that the multimachine tool vibrates, easy virtual connections.
To above problem, the physical characteristic of considering to utilize bimetal leaf is as temperature sensor.Bimetal leaf is made up of two kinds of coefficient of expansion different metallic or alloy; The higher one side of the coefficient of expansion is an active layers, and the one side that the coefficient of expansion is lower is a passive layer, and the temperature rising can make the deformation of active layers be greater than the deformation of passive layer; Thereby the integral body of bimetal leaf will be bent to passive layer one lateral bending; When reaching uniform temperature numerical value, make sheet metal produce deformation, this course of work is reversible.The deformation of sheet metal can make drive disk assembly drive the connection of switch contact or break off, the on/off control of circuit.
The temperature control mains switch that uses at present normally when temperature rises to a specific temperature control value, is connected subsequent conditioning circuit, under the special status, make the subsequent conditioning circuit open circuit when also needing a kind of temperature control mains switch can reach a specific temperature control value, and the course of work is reversible.Temperature detect switch (TDS) with this type of State Control function does not occur in practical application.
The utility model content
The purpose of the utility model provides a kind of two-speed temperature control mains switch, solves thermal control material response temperature variation generation deformation fast, and deformation strength accurately is delivered to switch contact, in time accomplishes technical problem closed to subsequent conditioning circuit or that open a way.
The two-speed temperature control mains switch of the utility model; Comprise sensor housing, bimetal leaf, sensor shell intracoelomic cavity bottom is provided with halfpace, is used to lay bimetal leaf; Wherein: bimetal leaf is a disc; Comprise initiatively metal level and passive metal level, initiatively metal level and passive metal level are combined closely and are double-decker, and initiatively metal level is served as reasons initiatively to the cambered surface of passive metal level direction depression in the lower surface of the upper surface of metal level and passive metal level.
Also comprise push rod, be positioned at movable contact flat, the fixed touch plate of switch case, an end of push rod and bimetal leaf are conflicted, and the other end and the movable contact flat of push rod are inconsistent, and movable contact flat and fixed touch plate keep in touch.
On the end face that said movable contact flat and fixed touch plate keep in touch, the movable contact flat contact is installed on the movable contact flat, corresponding fixed touch plate contact is installed on the fixed touch plate.
A kind of two-speed temperature control mains switch, an end of said push rod and the active layers of bimetal leaf are inconsistent, and the lower surface of movable contact flat contacts with the upper surface of fixed touch plate.
Another kind of two-speed temperature control mains switch, an end of said push rod and the passive layer of bimetal leaf are inconsistent, and the upper surface of movable contact flat contacts with the lower surface of fixed touch plate.
The leg-of-mutton thin plate of said fixed touch plate type of being having the grafting through hole that runs through the upper and lower end face near place, the left side, is equipped with the fixed touch plate contact on the right side of through hole.
Said movable contact flat comprises shell fragment, following shell fragment, circular arc shell fragment and fixed head; Last shell fragment is a rectangular thin plate with following shell fragment; The right side of the right side of last shell fragment and following shell fragment is fixedly connected through the circular arc shell fragment; The lower surface of last shell fragment is fixedly connected on the upper surface of fixed head, has the grafting through hole that runs through fixed head on the last shell fragment.
Also comprise conducting strip, conducting strip is fixed in the fixed bed of switch case inner chamber, and it is protruding that the end of conducting strip is provided with the grafting corresponding with the through hole of pegging graft.
Also comprise the pedestal that is provided with the centre pilot hole, the thickness in centre pilot hole is greater than 1/3rd of push rod length.
The two-speed temperature control mains switch of the utility model; To being swift in response accurately of specific temperature control value; The given shape of bimetal leaf and structure can guarantee that bimetal leaf gathers strength with variations in temperature before reaching specific temperature control value, energy surpasses critical value when reaching specific temperature control value; Make bimetal leaf moment produce bigger quick deformation to predetermined direction; Deformation strength is greater than the deformation elastic force of movable contact flat, movable contact flat and fixed touch plate are thoroughly engaged or separates through push rod, can not occur the state of adhesion or virtual connections between the contact.
Utilize the pilot hole on the pedestal to realize multi-point support to push rod, the thickness of pilot hole guaranteed push rod when transmitting deformation strength with receive force direction consistent, it is accurate to transmit, the loss of minimizing deformation energy.
Continue when the structure of movable contact flat can guarantee normal temperature to keep elasticity, make the stable strength at a stalemate of formation between bimetal leaf and movable contact flat, guarantee that transmission structures is in stable condition, can not receive the interference of the extraneous environment for use of switch easily.
Formed through change and to be different from the embodiment of prior art the subsequent conditioning circuit State Control to syndeton between bimetal leaf, push rod, movable contact flat and the fixed touch plate; Make that the subsequent control circuit can flexible design; Be easy to combine, produce more effective control effect with the circuit that installs.
Be described further below in conjunction with the two-speed temperature control mains switch of accompanying drawing the utility model.
Description of drawings
Fig. 1 is the bimetal leaf structural representation of the utility model two-speed temperature control mains switch embodiment 1;
Fig. 2 is the internal structure sketch map of the utility model two-speed temperature control mains switch embodiment 1;
Fig. 3 looks cutaway view for the internal structure master of the utility model two-speed temperature control mains switch embodiment 1;
Fig. 4 is the internal structure A-A direction cutaway view of the utility model two-speed temperature control mains switch embodiment 1;
Fig. 5 is the shaft side figure of the transmission device of the utility model two-speed temperature control mains switch embodiment 1;
Fig. 6 is the axial view of the transmission device of the utility model two-speed temperature control mains switch embodiment 1;
Fig. 7 is the equivalent electric circuit of the utility model two-speed temperature control mains switch embodiment 1 controlled coils when normal temperature and in the electromagnetic fan clutch;
Fig. 8 is the shaft side figure of the transmission device of the utility model two-speed temperature control mains switch embodiment 2.
Embodiment
In embodiment 1, as shown in Figures 2 and 3, two-speed temperature control mains switch comprises switch case 001; Sensor housing 002; Pedestal 003, sensor housing lumen openings place is provided with platform, and pedestal 003 forms for resistant to elevated temperatures engineering plastics compacting; The center has centre pilot hole 020, and pedestal 003 places on the opening part platform of sensor housing 002.Switch case 001 is plugged into through the opening part of snap fit and sensor housing 002, and it is as a whole to make that switch case 001, pedestal 003 are fixedly connected with sensor housing 002, and the faying face of sensor housing and switch case utilizes sealing ring 004 sealing.
Two conducting strips 022 are fixed in the chamber internal fixation layer of switch case 001, and the end of conducting strip is provided with two and pegs graft protruding.。Protuberance 005 is arranged at sensor housing 002 bottom, closely contacts with engine water tank.
Like Fig. 1, Fig. 3, Fig. 4, Fig. 5 and shown in Figure 6, the transmission device of embodiment 1 comprises bimetal leaf 006, push rod 007, movable contact flat 010, fixed touch plate 012.Bimetal leaf 006 is placed on the halfpace 011 of sensor housing 002 intracavity bottom; Bimetal leaf is a disc; Comprise the active layers of initiatively metal level 0051 formation and the passive layer that passive metal level 0052 forms; Initiatively metal level and passive metal level are combined closely and are double-decker, and initiatively the lower surface of the upper surface of metal level and passive metal level is by the cambered surface of active layers to passive layer direction depression.When bimetal leaf is heated generation deformation; Initiatively the lower surface of the upper surface of metal level and passive metal level is deformed into by the cambered surface of passive layer to active layers direction depression; The center of bimetal leaf is maximum than the home position displacement, the not obvious decline of the load-bearing capacity of bimetal leaf.
The leg-of-mutton thin plate of fixed touch plate type of being having the grafting through hole that runs through the upper and lower end face near place, the left side, is equipped with fixed touch plate contact 009 in the upper surface, right side of through hole, is fixedly connected with the grafting of corresponding conducting strip is protruding through the grafting through hole.
Fixed touch plate contact 009 contacts with movable contact flat contact 008, and push rod 007 passes centre pilot hole 020, and push rod 007 1 ends and movable contact flat 010 are inconsistent, and the active layers of the other end and bimetal leaf 006 is inconsistent.
As shown in Figure 7, be when the two-speed temperature control mains switch of embodiment 1 is applied in the circuit control of automobile electromagnetic fan clutch, when engine water tank normal temperature, with the equivalent electric circuit of controlled coils in the electromagnetic fan clutch.Movable contact flat and fixed touch plate make the circuit closed of the power supply P and the first coil L1 as first K switch, 1, the first K switch, 1 closure, and coil produces electromagnetic attraction.
Before temperature does not reach limit value, keep first operating state, movable contact flat and fixed touch plate keep in touch.The circuit closed of the first coil L1; Bimetal leaf generation deformation when bimetal leaf 006 is raised to limit value because of variations in temperature promotes push rod 007 and is subjected to displacement, and push rod 007 promotes movable contact flat 010 and makes its elastic deformation; Fixed touch plate contact 009 is separated with movable contact flat contact 008; Get into second operating state, movable contact flat keeps separating with fixed touch plate, the loop open circuit of the first coil L1.When temperature dropped to limit value, deformation took place and restores in bimetal leaf 006 once more, and push rod loses and supports movable contact flat and restore, and restores to the original state, and got into and kept first operating state, and movable contact flat and fixed touch plate keep in touch, the circuit closed of the first coil L1.Be delivered to movable contact flat 009 to the proper that bimetal leaf 006 produces when deformation takes place, movable contact flat accomplished with fixed touch plate fast contact, off action.
In embodiment 2; Under the constant situation of other structures of aforementioned embodiment 1 shown in Fig. 1 to 6; Bimetal leaf 006a is placed on the halfpace 011 of sensor housing 002 intracavity bottom, and as shown in Figure 6, push rod 007a passes centre pilot hole 020; Push rod 007a one end and movable contact flat 010a are inconsistent, and the passive layer of the other end and bimetal leaf 006a is inconsistent.
Before temperature does not reach limit value, keep first operating state, movable contact flat and fixed touch plate keep in touch.When bimetal leaf 006a is raised to limit value generation deformation because of variations in temperature; The space occurs between bimetal leaf 006a and push rod 007a, movable contact flat 010a is subjected to displacement push rod 007a because of its elastic deformation; Deformation takes place in movable contact flat 010a; Fixed touch plate contact 009a is separated with movable contact flat contact 008a, get into second operating state, movable contact flat keeps separating with fixed touch plate.When temperature dropped to limit value, deformation took place and restores to the original state in bimetal leaf 006a once more, got into and kept first operating state, and movable contact flat and fixed touch plate keep in touch.
Make the method for temperature control mains switch in the foregoing description, comprising:
With conducting strip 022 switch case 001 of packing into;
Fixed touch plate 012 is connected the back installs with fixed touch plate contact 009, movable contact flat 010 is connected the back installs with movable contact flat contact 008 with conducting strip 022 with conducting strip 022;
With bimetal leaf 006, push rod 007 and the pedestal 003 order sensor housing 003 of packing into; Switch case 001, sealing ring 004 and sensor housing 003 plugged into through snap fit be in the same place.
The method of utilizing the utility model that electromagnetic fan clutch is controlled comprises that step is following:
Before engine temperature reached limit value, the shortage of heat that protuberance 005 transmits was so that bimetal leaf 006 produces deformation, and temperature detect switch (TDS) is failure to actuate, and keep in touch with movable contact flat contact 008 fixed touch plate contact 009, and temperature detect switch (TDS) is in first operating state;
When engine temperature is raised to set point, bimetal leaf 006 instant reverse, separate with fixed touch plate contact 009 movable contact flat contact 008, and temperature detect switch (TDS) is in second operating state;
When engine temperature drops to set point, the reduction of bimetal leaf 006 instant reverse, movable contact flat contact 008 contacts with fixed touch plate contact 009, and temperature detect switch (TDS) is in first operating state.
Comprise a kind of electromagnetic fan clutch of the two-speed temperature control mains switch of the utility model, can accomplish when first operating state, or engine start is not when reaching working temperature, radiator fan does not rotate radiating and cooling; When reaching the limiting temperature of second operating state, break off the dedicated control circuit of electromagnetic fan clutch, make radiator fan rotate radiating and cooling.
The temperature value that deformation takes place bimetal leaf 006 is relevant with the radian of bimetal leaf active layers and passive layer.
Bimetal leaf among the utility model embodiment, the shape of cooperation sensor shell intracoelomic cavity, edge shape can be shapes such as circle, rectangle, triangle.
The contact-making surface of the corresponding contact among the utility model embodiment is convex surface and the concave surface that cooperatively interacts, and guarantees contact area.
Above-described embodiment describes the preferred implementation of the utility model; Be not that scope to the utility model limits; Under the prerequisite that does not break away from the utility model design spirit; Various distortion and improvement that those of ordinary skills make the technical scheme of the utility model all should fall in the definite protection range of the utility model claims.
Claims (9)
1. two-speed temperature control mains switch; Comprise sensor housing (002), bimetal leaf (006), sensor shell intracoelomic cavity bottom is provided with halfpace (011), is used to lay bimetal leaf; It is characterized in that: bimetal leaf is a disc; Comprise initiatively metal level (0051) and passive metal level (0052), initiatively metal level and passive metal level are combined closely and are double-decker, initiatively the lower surface of the upper surface of metal level and the passive metal level cambered surface that metal level initiatively caves in to passive metal level direction of serving as reasons.
2. two-speed temperature control mains switch as claimed in claim 1; It is characterized in that: also comprise push rod (007,007a), be positioned at switch case movable contact flat (010,010a), fixed touch plate (012; 012a); One end of push rod and bimetal leaf are conflicted, and the other end and the movable contact flat of push rod are inconsistent, and movable contact flat and fixed touch plate keep in touch.
3. two-speed temperature control mains switch as claimed in claim 2; It is characterized in that: on the end face that said movable contact flat and fixed touch plate keep in touch, movable contact flat (010, movable contact flat contact (008 is installed on 010a); 008a); Fixed touch plate (012, be equipped with on 012a) corresponding fixed touch plate contact (009,009a).
4. two-speed temperature control mains switch as claimed in claim 3 is characterized in that: the active layers of an end of said push rod (007) and bimetal leaf (006) is inconsistent, and the lower surface of movable contact flat (010) contacts with the upper surface of fixed touch plate (012).
5. two-speed temperature control mains switch as claimed in claim 3 is characterized in that: the passive layer of an end of said push rod (007a) and bimetal leaf (006a) is inconsistent, and the upper surface of movable contact flat (010a) contacts with the lower surface of fixed touch plate (012).
6. like the described arbitrary two-speed temperature control mains switch of claim 2 to 5; It is characterized in that: said fixed touch plate is a type leg-of-mutton thin plate; Having the grafting through hole that runs through the upper and lower end face near left side place, be equipped with on the right side of through hole the fixed touch plate contact (009,009a).
7. two-speed temperature control mains switch as claimed in claim 6; It is characterized in that: said movable contact flat comprises shell fragment, following shell fragment, circular arc shell fragment and fixed head; Last shell fragment is a rectangular thin plate with following shell fragment; The right side of the right side of last shell fragment and following shell fragment is fixedly connected through the circular arc shell fragment, and the lower surface of last shell fragment is fixedly connected on the upper surface of fixed head, has the grafting through hole that runs through fixed head on the last shell fragment.
8. two-speed temperature control mains switch as claimed in claim 7 is characterized in that: also comprise conducting strip (022), conducting strip is fixed in the fixed bed of switch case (001) inner chamber, and it is protruding that the end of conducting strip is provided with the grafting corresponding with the through hole of pegging graft.
9. two-speed temperature control mains switch as claimed in claim 8 is characterized in that: also comprise the pedestal (003) that is provided with centre pilot hole (020), the thickness in centre pilot hole is greater than 1/3rd of push rod length.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220027245 CN202473748U (en) | 2012-01-20 | 2012-01-20 | Two-speed temperature control power switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220027245 CN202473748U (en) | 2012-01-20 | 2012-01-20 | Two-speed temperature control power switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202473748U true CN202473748U (en) | 2012-10-03 |
Family
ID=46921891
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220027245 Expired - Fee Related CN202473748U (en) | 2012-01-20 | 2012-01-20 | Two-speed temperature control power switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202473748U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102543575A (en) * | 2012-01-20 | 2012-07-04 | 龙口中宇机械有限公司 | Two-speed temperature control power supply switch |
-
2012
- 2012-01-20 CN CN 201220027245 patent/CN202473748U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102543575A (en) * | 2012-01-20 | 2012-07-04 | 龙口中宇机械有限公司 | Two-speed temperature control power supply switch |
| CN102543575B (en) * | 2012-01-20 | 2015-07-01 | 龙口中宇机械有限公司 | Two-speed temperature control power supply switch |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121003 Termination date: 20210120 |