CN209045432U - A kind of power-off restoration temperature controller - Google Patents

Abstract

The utility model provides a kind of power-off restoration temperature controller, including connecting terminal, pedestal, bimetal leaf and fixed touching plate, pedestal both ends are respectively equipped with perforative through-hole one and through-hole two along the vertical direction, are up sequentially connected movable contact spring and connecting terminal after the consistent reach through hole one of rivet；It is connected across in the middle part of movable contact spring on the middle part of pedestal, the other end is equipped with moving contact；Fixed contact is located at the underface of moving contact；Fixed contact is located on fixed touching plate；It is fixed on the base that fixed touching plate one end is applied in the rivet two in through-hole two；The lower surface of pedestal is from left to right successively arranged rivet one, contact chip, PTC chip, spring leaf and rivet two, and connects and form the circuit PTC；The sequentially connected connecting terminal in the upper surface of pedestal, movable contact spring, moving contact, fixed contact and fixed touching plate form contact circuit.Power-off protection device of the utility model by using PTC chip as temperature controller has the function of temperature protection, overheating protection, prevents dryouting, and structure is simple, uses more secure and reliable.

Description

A kind of power-off restoration temperature controller

Technical field

The utility model relates to a kind of temperature controller technical field more particularly to a kind of power-off restoration temperature controllers.

Background technique

Existing mechanical temperature controller is typically all the principle production for using bimetal leaf to expand with heat and contract with cold in the market, works as temperature When increasing to a certain extent (when overtemperature), bimetal leaf generates deformation and movable contact and stationary contact is made to be in discrete state, circuit It disconnects, is no longer heat up, when temperature dropped to a certain extent, bimetal leaf resets, to drive movable contact and stationary contact again In connected state, heater circuit works on.Using such structure setting, if mechanical temperature controller repeatedly disconnects in this way And connection, finally immersion heater dryouies water, there are great security risk, and waste of energy, also reduction mechanical temperature control The service life of device uses inconvenient.Later people use temperature controller with manual reset, using Thermal Cutoffs conduct Power-off protection device, obtains certain effect, but this temperature controller with manual reset, and using Thermal Cutoffs product, there are performances The unstable, defects such as security risk is big, service life is low.

Utility model content

In order to solve deficiency present in above-mentioned technology, the utility model proposes a kind of power-off restoration temperature controllers, using PTC Power-off protection device of the chip as temperature controller needs just to be capable of resetting work after powering off, there is overheat to protect in over temperature and heat Shield, the anti-functions such as dryout.

To achieve the above objectives, the present invention adopts the following technical solutions:

A kind of power-off restoration temperature controller, including connecting terminal, pedestal, bimetal leaf and fixed touching plate, the pedestal both ends point Perforative through-hole one and through-hole two, rivet one it She You not be sequentially connected movable contact spring up after running through the through-hole one along the vertical direction One end and the connecting terminal one end, the other end of the connecting terminal connects external circuit；The middle part of the movable contact spring It is connected across on the middle part of the pedestal, the other end is equipped with moving contact；Fixed contact is located at the underface of the moving contact；It is described to determine touching Head is located on fixed touching plate；The rivet two that described fixed touching plate one end is applied in the through-hole two is fixed on the pedestal, separately One end connects external circuit；Bimetal leaf is equipped between the movable contact spring and pedestal upper surface；The lower surface of the pedestal is from a left side It is successively arranged the rivet one, contact chip, PTC chip, spring leaf and the rivet two to the right side, and connects and forms the circuit PTC；Institute The sequentially connected connecting terminal in upper surface, movable contact spring, moving contact, fixed contact and the fixed touching plate composition contact for stating pedestal return Road.

Further, the pedestal is equipped with groove in the bottom for being equipped with the side of through-hole one, is sequentially placed in the groove The contact chip and PTC chip, described contact chip one end are contacted with the PTC chip, and the other end is set in the rivet one Lower part.

Further, the PTC chip bottom surface is supported by spring leaf, top surface contact contact chip, one in four vertical planes Face is by one lower limit of rivet, other vertical planes closely groove inner wall.

Further, one end of the spring leaf crimps PTC chip, and the other end is set on rivet two.

Further, it is a cylindrical protrusions above the middle part of the pedestal, is equipped with and wears in the middle part of the bimetal leaf Hole is covered in the protrusion by the perforation.

Further, hole is opened up in the middle part of the movable contact spring, is passed through for the protrusion, the bimetal leaf and movable contact spring are flat Row setting, and the bimetal leaf is below movable contact spring.

Further, movable contact spring protrusion directed downwardly containing there are two, position is corresponding with the both ends of the bimetal leaf, And it can mutually touch.

Further, the moving contact is riveted on the location hole one of described movable contact spring one end, the fixed contact riveting On the location hole two of the fixed touching plate, the moving contact can contact with each other or separate with fixed contact.

Further, external circuit connecting hole is respectively equipped on the connecting terminal and fixed touching plate.

Compared with prior art, the utility model has the following beneficial effects:

The utility model provides a kind of power-off restoration temperature controller, by the way that PTC chip is added as power-off protection device, makes temperature Control device is no longer simple intermittent-heating, cooling reset, joined the condition of power-off when resetting, the danger for avoiding heating from dryouting, Have the function of temperature protection, overheating protection；And the contact circuit of the temperature controller and the switching in the circuit PTC are simple, and design is closed Reason, is deformed at different temperatures using bimetal leaf, to change contact or discrete state of the moving contact with fixed contact, is made The temperature controller is in contact circuit or the circuit PTC.The instrument element designs advantages of simple, multiple functional, securely and reliably, meets Needed for production.

Detailed description of the invention

Fig. 1 is a kind of no bracket power-off restoration temperature controller structure schematic diagram provided by the utility model.

Fig. 2 is a kind of no bracket power-off restoration temperature controller cross-sectional cut-away structural schematic diagram provided by the utility model.

Fig. 3 is a kind of no bracket power-off restoration temperature controller fractionation structural representation provided by the utility model.

Fig. 4 is that one kind provided by the utility model has bracket power-off restoration temperature controller structure schematic diagram.

Description of symbols:

1- connecting terminal；2- rivet two；3- movable contact spring；4- pedestal；5- bimetal leaf；6- fixed touching plate；

7- moving contact；8- fixed contact；9- spring leaf；10-PTC chip；11- contact chip；

12- rivet one.

Specific embodiment

In order to which the technical solution of the utility model is explained further, below by specific embodiment come to the utility model into Row elaborates.It should be noted that attached drawing is all made of very simplified form and using non-accurate ratio, only to side Just, the purpose of the utility model embodiment is lucidly aided in illustrating.

As shown in Fig. 1,2,3 and 4, the utility model provides a kind of power-off restoration temperature controller, including connecting terminal 1, pedestal 4, bimetal leaf 5 and fixed touching plate 6, the pedestal 4 be insulation cuboid, upper surface in three-level it is ladder-like, it is advanced along the long side direction Square groove one is opened up, middle rank remains with a boss, rudimentary to open up square groove two along the long side direction.4 both ends of pedestal are respectively equipped with Perforative through-hole one and through-hole two along the vertical direction.Rivet 1 is up sequentially connected movable contact spring 3 after running through the through-hole one The other end of one end of one end and the connecting terminal 1, the connecting terminal 1 connects external circuit.The connecting terminal 1 is just View is in " Z " type, offers connecting hole one on the one end connecting with the rivet 1, and the connecting terminal 1 by this One end is placed on the advanced face of the pedestal 4, is limited by the square groove one, guarantees that the connecting terminal 1 will not control offset. One end of the movable contact spring 3 is stacked below described this one end of connecting terminal 1, the two is electrically connected by rivet 1, described One end that movable contact spring 3 is connect with rivet 1 offers circular hole one, and tip width is less than own body width, is convenient to set Enter in the square groove one, is limited by the square groove one.After the rivet 1 passes through the through-hole one of the pedestal 4, then successively wear The connecting hole one for crossing movable contact spring 3 circular hole one and the connecting terminal 1, electrically with the movable contact spring 3 by the connecting terminal 1 It connects, after connecting, the upper sheet metal of the connecting terminal 1 is parallel to each other with the movable contact spring 3.The rivet 1 Rivet 22 is all intermediate thin, the thick cylindrical body in both ends.The middle part of the movable contact spring 3 is connected across on the middle part of the pedestal 4, separately One end is equipped with moving contact 7, and fixed contact 8 is located at the underface of the moving contact 7, and the moving contact 7 is in mushroom with fixed contact 8 Shape, including integrally formed handle column and mushroom head, handle column connect other connecting components, and mushroom head is contact surface, increase contact Area guarantees that connection is smooth.The fixed contact 8 is located on fixed touching plate 6；Described 6 one end of fixed touching plate is applied in the through-hole two Interior rivet 22 is fixed on the pedestal 4, and the other end connects external circuit.One end that the fixed touching plate 6 is connect with pedestal 4 Circular hole two is opened up, is aligned with the through-hole two on the pedestal 4, is passed through for rivet 22, the fixed touching plate 6 is connect with rivet 22 Get up.In addition, this one end that the fixed touching plate 6 is connect with rivet 22 is placed in the square groove two of the pedestal 4, by the side Slot two limits it.The fixed touching plate 6 is " Z " matrix, in addition in the reversed horizontal extension in the junction of upper sheet metal The profiled metal piece that one sheet metal is formed.Bimetal leaf 5 is equipped between 4 upper surface of the movable contact spring 3 and pedestal.From temperature controller Front view look, upper sheet metal, movable contact spring 3, bimetal leaf 5, the upper sheet metal of fixed touching plate 6 of the connecting terminal 1 are mutual In parallel, the lower sheet metal of the lower sheet metal of the connecting terminal 1 and fixed touching plate 6 extends to both sides, connects external circuit.It is described The lower surface of pedestal 4 is from left to right successively arranged the rivet 1, contact chip 11, PTC chip 10, spring leaf 9 and the riveting 22 are followed closely, and connects and forms the circuit PTC；The sequentially connected connecting terminal 1 in the upper surface of the pedestal 4, movable contact spring 3, dynamic touching First 7, fixed contact 8 and fixed touching plate 6 form contact circuit.

External circuit connecting hole is respectively equipped on the connecting terminal 1 and fixed touching plate 6.When external circuit passes through described in access When the external circuit connecting hole of 6 the two of connecting terminal 1 and fixed touching plate, there was only a kind of circuit in both the circuit PTC and contact circuit Work, when temperature is higher than preset temperature, PTC loop works；When temperature is lower than preset temperature, contact loop works, thus Power-off restoration temperature controller is set to be in specific working condition.In another embodiment, the connecting terminal 1 and fixed touching plate 6 with External circuit connection uses butt-joint structure, and the connecting terminal 1 and fixed touching plate 6 are conductive sheet metal, and external circuit is led Line end is the exposed conductive head from insulated hull, and the conductive head is conductive metal clusters, i.e. the core of electric wire, When butt-joint first to the contact surface of the sheet metal of the connection terminal 1 and fixed touching plate 6 and external circuit coupling part into The metal clusters of the conductive head, are then overlapped on 1 sheet metal of the connection terminal cleared up or described by row cleaning On 6 sheet metal of fixed touching plate, then by both the conductive head and sheet metal contact place be placed under certain electrode pressure, utilize Electric current passes through the resistance heat generated when the two and melts contact surface between the two, to apply pressure always in the welding process Power.After the completion of welding, the metal clusters of the conductive head are just tightly flattened and are welded on the sheet metal.

The working principle of the power-off restoration temperature controller: when the moving contact 7 is contacted with fixed contact 8, since contact returns Connecting component only has the conducting elements such as connecting terminal 1, movable contact spring 3, moving contact 7, fixed contact 8 and fixed touching plate 6 in road, resistance compared with It is small, it is more much smaller than the resistance in the circuit PTC, therefore the voltage at the both ends PTC is minimum, PTC chip does not work, and the circuit PTC does not work；When Temperature increases, and the bimetal leaf 5 deforms, pushes the movable contact spring 3, separate the moving contact 7 with fixed contact 8.? In the case where maintaining certain voltage between fixed touching plate 6 and connecting terminal 1, voltage liter of the PTC chip 10 due to its both ends It generates heat to operating voltage, so that the temperature of the bimetal leaf 5 be made to remain at its reset temperature or more without reset, institute The state that moving contact 7 is also remained open with fixed contact 8 is stated, only by cutting off the power, the PTC chip 10 does not work, and moves touching First 7 can just reset with fixed contact 8, be in closed state again.Power-off protector by using PTC chip 10 as temperature controller Part needs just to be capable of resetting work after powering off in over temperature and heat, has the function of temperature protection, overheating protection, prevents dryouting, Structure is simple, uses more secure and reliable.

The pedestal 4 is equipped with groove in the bottom for being equipped with the side of through-hole one, is sequentially placed the contact in the groove Piece 11 and PTC chip 10, described 11 one end of contact chip are contacted with the PTC chip 10, and the other end is set in the rivet 1 Lower part.The bottom surface of the PTC chip 10 is supported by spring leaf 9, and top surface contacts contact chip 11, and the one side in four vertical planes is by riveting One 12 lower limits are followed closely, closely the groove inner wall, the limit of these positions enable the PTC chip 10 steadily to other vertical planes It is fixed in the groove of the pedestal 4.One end of the spring leaf 9 crimps PTC chip 10, and the other end is set on rivet 22. The spring leaf 9 is arc-shaped spring piece, and the one end connecting with rivet 22 opens up connecting hole two, passes through for rivet 22.

It is a cylindrical protrusions above the middle part of the pedestal 4, is equipped with perforation in the middle part of the bimetal leaf 5, passes through institute Perforation is stated to cover in the protrusion.Open up hole in the middle part of the movable contact spring 3, passed through for the protrusion, the bimetal leaf 5 with it is dynamic Contact 3 is arranged in parallel, and the bimetal leaf 5 is below movable contact spring 3.The raised direction from lower to upper sequentially passes through described Bimetal leaf 5 and movable contact spring 3, the bimetal leaf 5 are located at the underface of the movable contact spring 3.Also, the movable contact spring 3 contains Two protrusions directed downwardly, position is corresponding with the both ends of the bimetal leaf 5, and can mutually touch.The protrusion bottom is slightly higher In the upper surface middle rank ladder of the pedestal 4, this makes the bimetal leaf 5 directly not contact the upper surface of the pedestal 4, Retain certain space between the two, for the bimetal leaf 5 deformation occurs at different temperatures provide space may, in addition, working as Deformation occurs for the bimetal leaf 5, and when both ends are bent upwards, the bimetal leaf 5 can be by the raised bottom as fulcrum The movable contact spring 3 is pushed up, just 5 both ends of bimetal leaf push two protrusions of the movable contact spring 3.

The moving contact 7 is riveted on the location hole one of described 3 one end of movable contact spring, and it is described fixed that the fixed contact 8 is riveted on On the location hole two of contact 6, the moving contact 7 can contact with each other or separate with fixed contact 8.The location hole of the movable contact spring 3 One is located on the other end far from connection rivet 1, and it is oppositely extending that the location hole two of the fixed touching plate 6 is located at the fixed touching plate 6 Sheet metal on.The oppositely extending sheet metal is parallel to each other with movable contact spring 3, and the two passes through the moving contact 7 and fixed contact 8 It can be connected with each other or separate.The separation of the moving contact 7 and fixed contact 8 is sent out at a certain temperature by the bimetal leaf 5 The deformation that raw both ends are bent upwards, and then the movable contact spring 3 is pushed to offset up and realize.

Power-off restoration temperature controller described above is unsupported form, in another embodiment, the power-off restoration Temperature controller can also be using there is rack form, as shown in figure 4, the base construction ratio of standoff power-off restoration temperature controller is without bracket Power-off restoration temperature controller the more L-type block structures of pedestal, the main structure one of the L-type block structure and the pedestal 4 Body formed, i.e., the complete structure of the described pedestal 4 is the external L-type block structure of a cuboid, is from the side in " Z " type.Institute Power-off restoration temperature controller is stated using having bracket or without rack form, primarily to being coupled the difference of position, function It is unaffected.

The utility model provides a kind of power-off restoration temperature controller, by the way that PTC chip is added, temperature controller is enable to be different from tradition Temperature controller is no longer simple intermittent-heating, cooling reset, joined the condition of power-off when resetting, the danger for avoiding heating from dryouting Danger；And the contact circuit of the temperature controller and the switching in the circuit PTC are simple, and design is reasonable, using bimetal leaf in different temperatures Under be deformed, to change contact or discrete state of the moving contact with fixed contact, make the temperature controller be in contact circuit or The circuit PTC.The instrument element designs advantages of simple, multiple functional, securely and reliably, meets needed for production.

It is noted that above embodiments are only to illustrate the technical solution of the utility model, rather than its limitations；Although The utility model is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: its according to It is so possible to modify the technical solutions described in the foregoing embodiments, or part of technical characteristic is equally replaced It changes；And these are modified or replaceed, various embodiments of the utility model technical solution that it does not separate the essence of the corresponding technical solution Protection scope.

Claims (9)

1. a kind of power-off restoration temperature controller, including connecting terminal (1), pedestal (4), bimetal leaf (5) and fixed touching plate (6), special Sign is that pedestal (4) both ends are respectively equipped with perforative through-hole one and through-hole two along the vertical direction, and rivet one (12) runs through institute One end of movable contact spring (3) and one end of the connecting terminal (1), the connecting terminal (1) are up sequentially connected after stating through-hole one The other end connect external circuit；It is connected across on the middle part of the pedestal (4) in the middle part of the movable contact spring (3), the other end is equipped with Moving contact (7)；Fixed contact (8) is located at the underface of the moving contact (7)；The fixed contact (8) is located on fixed touching plate (6)；Institute It states the rivet two (2) that fixed touching plate (6) one end is applied in the through-hole two to be fixed on the pedestal (4), other end connection External circuit；Bimetal leaf (5) are equipped between the movable contact spring (3) and pedestal (4) upper surface；The lower surface of the pedestal (4) From left to right it is successively arranged the rivet one (12), contact chip (11), PTC chip (10), spring leaf (9) and the rivet two (2), and connection forms the circuit PTC；The sequentially connected connecting terminal (1) in the upper surface of the pedestal (4), movable contact spring (3), Moving contact (7), fixed contact (8) and fixed touching plate (6) form contact circuit.

2. a kind of power-off restoration temperature controller according to claim 1, which is characterized in that the pedestal (4) is being equipped with through-hole The bottom of one side is equipped with groove, is sequentially placed the contact chip (11) and PTC chip (10), the contact in the groove Piece (11) one end is contacted with the PTC chip (10), and the other end is set in the lower part of the rivet one (12).

3. a kind of power-off restoration temperature controller according to claim 2, which is characterized in that PTC chip (10) bottom surface by Spring leaf (9) support, top surface contact contact chip (11), the one side in four vertical planes by rivet one (12) lower limit, His vertical plane closely groove inner wall.

4. a kind of power-off restoration temperature controller according to claim 3, which is characterized in that a side pressure of the spring leaf (9) PTC chip (10) are connect, the other end is set on rivet two (2).

5. a kind of power-off restoration temperature controller according to claim 1, which is characterized in that above the middle part of the pedestal (4) For a cylindrical protrusions, bimetal leaf (5) middle part is equipped with perforation, is covered in the protrusion by the perforation.

6. a kind of power-off restoration temperature controller according to claim 5, which is characterized in that opened up in the middle part of the movable contact spring (3) Hole is passed through for the protrusion, and the bimetal leaf (5) is arranged in parallel with movable contact spring (3), and the bimetal leaf (5) exists Below movable contact spring (3).

7. a kind of power-off restoration temperature controller according to claim 6, which is characterized in that there are two the movable contact spring (3) contains Protrusion directed downwardly, position is corresponding with the both ends of the bimetal leaf (5), and can mutually touch.

8. a kind of power-off restoration temperature controller according to claim 1, which is characterized in that the moving contact (7) is riveted on institute On the location hole one for stating movable contact spring (3) one end, the fixed contact (8) is riveted on the location hole two of the fixed touching plate (6), described Moving contact (7) can be contacted with each other or be separated with fixed contact (8).

9. a kind of power-off restoration temperature controller according to claim 1, which is characterized in that the connecting terminal (1) and fixed touching Piece is respectively equipped with external circuit connecting hole on (6).