CN212783238U - Small household appliance temperature controller - Google Patents
Small household appliance temperature controller Download PDFInfo
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- CN212783238U CN212783238U CN202021830551.8U CN202021830551U CN212783238U CN 212783238 U CN212783238 U CN 212783238U CN 202021830551 U CN202021830551 U CN 202021830551U CN 212783238 U CN212783238 U CN 212783238U
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- movable contact
- elastic piece
- mounting groove
- temperature controller
- fusing
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Abstract
The utility model provides a small household appliance temperature controller, including base and contact group, contact group including static contact and movable contact, the base including metal disc and drain pan, movable contact elasticity compress tightly in the top of static contact, the base on be provided with and prevent dry combustion method subassembly, prevent dry combustion method subassembly including fusing pole and elastic component, the elastic component setting between fusing pole and drain pan, fusing pole and drain pan can form the centre gripping to the elastic component, and fusing pole can remove the centre gripping that forms to the elastic component with the drain pan when dry combustion method, elastic component and movable contact between the transmission be connected, the elastic component can drive movable contact towards the top motion when its elasticity resets. The utility model provides a small household appliance temperature controller for preventing dry heating, which has simpler structure and lower cost.
Description
Technical Field
The utility model relates to a small household appliances temperature controller.
Background
The temperature controller is also called as a temperature controller and a temperature protector, and is commonly used in small household electrical appliances, such as a hot water kettle, a coffee pot and other liquid heaters with electric heating generating devices, the temperature controller in the prior art generally comprises a contact piece group, a temperature sensing on-off component and an anti-dry burning component, wherein the contact piece group comprises a static contact piece and a movable contact piece, the temperature sensing on-off component is used for controlling the separation/attachment between the static contact piece and the movable contact piece, the anti-dry burning component comprises a swing rod, one end of the swing rod extends to a position close to the contact piece group, the swing rod can enable the contact piece group to extend into the space between the static contact piece and the movable contact piece after the separation of the temperature sensing on-off component, so that the movable contact piece and the static contact piece can not reset to the attached state after the temperature is reduced, thereby avoiding the small household electrical appliances from reciprocating temperature increase/decrease caused by the, the phenomenon of 'dry burning' occurs after the water is evaporated. But the small household appliance temperature controller of the prior art, its spare part of preventing dry combustion method subassembly is more, the structure is comparatively complicated, makes the volume of temperature controller great on the one hand, and on the other hand cost is higher.
SUMMERY OF THE UTILITY MODEL
The utility model provides a small household appliance temperature controller for preventing dry heating, which has simpler structure and lower cost.
In order to realize the above purpose, the utility model provides a small household appliance temperature controller, including base and contact group, contact group including static contact and movable contact, the base including metal disc and drain pan, movable contact elasticity compress tightly the top at static contact, the base on be provided with and prevent dry combustion method subassembly, prevent dry combustion method subassembly including fusing pole and elastic component, the elastic component setting between fusing pole and drain pan, fusing pole and drain pan can form the centre gripping to the elastic component, and fusing pole can remove the centre gripping that forms to the elastic component with the drain pan when dry combustion method, elastic component and movable contact between the transmission be connected, the elastic component can drive movable contact move towards the top when its elasticity resets.
The technical scheme has the advantages that: the anti-dry burning component is arranged on the base and comprises an elastic piece in transmission connection with the movable contact piece and a fusing rod capable of forming clamping on the elastic piece with the bottom shell, the fusing rod can keep/release the clamping on the elastic piece formed with the bottom shell according to the fact that whether the fusing rod is in a dry burning state or not, the elastic piece is elastically contracted or elastically reset, when the small household appliance operates normally, the fusing rod and the bottom shell are clamped on the elastic piece, the elastic piece is contracted, the movable contact piece is elastically pressed above the static contact piece, and at the moment, the circuit is communicated; when the small household electrical appliance enters a dry-burning state, the fusing rod releases the clamping of the elastic piece between the fusing rod and the bottom shell, the elastic piece resets elastically and drives the movable contact piece to move towards the upper part, so that the movable contact piece is far away from the static contact piece, a circuit is disconnected, the condition that the small household electrical appliance is dried-burning is avoided, the structure is relatively simple, the needed parts are few, and the product volume is further reduced, and meanwhile, the cost is reduced.
The utility model discloses can further set up to: the elastic piece radial extension department be provided with transmission portion, transmission portion extend to the below of movable contact spring, and transmission portion can reset along with the elasticity of elastic piece and upwards slide.
Through further setting up, when little household electrical appliances got into the dry combustion method state, the elastic component elasticity resets, and the drive portion that drives to extend to the movable contact spring below slides to the top, forms the transmission cooperation between elastic component and the movable contact spring to the drive portion only extends to the below of movable contact spring, and there is not being connected between drive portion and the movable contact spring, can avoid the in-process that the drive portion slided downwards, causes the interference to the laminating between static contact and the movable contact spring.
The utility model discloses can further set up to: the bottom shell is provided with a cylindrical mounting groove, the elastic piece is arranged in the mounting groove, one end of the fusing rod is slidably inserted into the mounting groove, and the other end of the fusing rod is in positioning fit with the metal disc.
Through further setting up, set up the elastic component in the mounting groove that is the tube-shape to the one end of fusing pole slides and inserts and establish in the mounting groove, can form spacingly to the deformation direction of elastic component, and because location fit between the other end of fusing pole and the metal disc, when little household electrical appliances dry combustion method, the fusing pole often by with the metal disc between location fit's the other end take the lead to melt earlier, consequently, the setting of mounting groove can form the direction of sliding to fusing pole.
The utility model discloses can further set up to: the bottom shell is provided with a sliding groove for guiding the transmission part to slide between the movable contact piece and the mounting groove, the sliding groove is communicated with the mounting groove, and the guiding sliding groove extends along the length direction of the mounting groove.
Through further setting, by setting up the spout between movable contact and mounting groove, form the direction to the slip of drive division, simple structure easily implements.
The utility model discloses can further set up to: the thermistor comprises thermistor pieces which are arranged in series, wherein the thermistor pieces are positive temperature coefficient thermistors.
By further providing the thermistor member as a positive temperature coefficient thermistor, the resistance value of the thermistor member can be increased sharply when the temperature rises to a certain level, and the circuit can be cut off in an insulated manner at a certain temperature, thereby controlling the temperature within a certain range of values.
Drawings
Fig. 1 is a perspective view of an embodiment of the present invention;
fig. 2 is a schematic diagram of the internal structure of the embodiment of the present invention;
fig. 3 is an enlarged view of a portion a in fig. 2 according to an embodiment of the present invention;
FIG. 4 is a schematic structural view of a mounting groove in an embodiment of the present invention;
fig. 5 is a schematic view of the contact set and the dry burning prevention component according to the embodiment of the present invention.
Wherein: a base 1; a metal plate 11; a bottom case 12; a mounting groove 121; a chute 122; a contact set 2; a static contact piece 21; a movable contact piece 22; a temperature sensing on-off component 3; a bimetal 31; a thermistor member 4; an anti-dry heating component 5; a fuse rod 51; an elastic member 52; a transmission section 521.
Detailed Description
The embodiment of the small household appliance temperature controller of the utility model is shown in figures 1-5: the household appliance heating device comprises a base 1, a contact piece group 2, a temperature sensing on-off assembly 3 and a thermistor 4, wherein the contact piece group 2 comprises a static contact piece 21 and a movable contact piece 22, the base 1 comprises a metal disc 11 and a bottom shell 12, the movable contact piece 22 is elastically pressed above the static contact piece 21, an anti-dry burning assembly 5 is arranged on the base 1, the anti-dry burning assembly 5 comprises a fusing rod 51 and an elastic piece 52, in the embodiment, the elastic piece 52 is a spring, the structure of the spring is in a conventional arrangement, the spring is only shown schematically in the drawing, the elastic piece 52 is arranged between the fusing rod 51 and the bottom shell 12, the fusing rod 51 and the bottom shell 12 can form clamping on the elastic piece 52, the fusing rod 51 can release the clamping on the elastic piece 52 with the bottom shell 12 during dry burning, in the embodiment, the dry burning refers to the condition that the household appliance is repeatedly boiled and evaporated, the state that the internal liquid is too little, fusing rod 51 constitute by plastics material, and under the dry combustion state of small household electrical appliances, fusing rod 51 can be because the high melting of temperature to the centre gripping of formation of elastic component 52 between the release and bottom shell 12, elastic component 52 and movable contact spring 22 between the transmission be connected, elastic component 52 can drive movable contact spring 22 towards the top when its elasticity resets. The thermistor 4 is a positive temperature coefficient thermistor, which can increase the resistance value to insulation when the temperature rises to a certain height. The temperature sensing on-off component 3 comprises a bimetallic strip 31 and a ceramic rod, wherein the bimetallic strip 31 can be deformed by heating and pushes the ceramic rod to displace, and the circuit is disconnected by the displacement of the ceramic rod. The radially extending part of the elastic element 52 is provided with a transmission part 521, the transmission part 521 extends to the lower part of the movable contact piece 22, and the transmission part 521 can slide upwards along with the elastic reset of the elastic element 52. The bottom shell 12 is provided with a cylindrical mounting groove 121, the elastic element 52 is arranged in the mounting groove 121, one end of the fusing rod 51 is slidably inserted in the mounting groove 121, and the other end of the fusing rod 51 is in positioning fit with the metal plate 11. The bottom case 12 is provided with a sliding slot 122 for guiding the transmission portion 521 to slide between the movable contact 22 and the mounting groove 121, the sliding slot 122 is communicated with the mounting groove 121, and the sliding slot 122 extends along the length direction of the mounting groove 121.
The above examples are only one of the preferred embodiments of the present invention, and the general changes and substitutions performed by those skilled in the art within the technical scope of the present invention are included in the protection scope of the present invention.
Claims (5)
1. The utility model provides a small household appliances temperature controller, is including base and contact group, contact group including static contact and movable contact spring, the base including metal disc and drain pan, its characterized in that: the movable contact spring is elastically pressed above the static contact spring, the base is provided with an anti-dry heating assembly, the anti-dry heating assembly comprises a fusing rod and an elastic piece, the elastic piece is arranged between the fusing rod and the bottom shell, the fusing rod and the bottom shell can form clamping on the elastic piece, the fusing rod can remove clamping on the elastic piece formed by the bottom shell when the fusing rod is in dry heating, the elastic piece and the movable contact spring are in transmission connection, and the elastic piece can drive the movable contact spring to move towards the upper side when the elastic piece is in elastic reset.
2. The small home appliance temperature controller according to claim 1, wherein: the elastic piece radial extension department be provided with transmission portion, transmission portion extend to the below of movable contact spring, and transmission portion can reset along with the elasticity of elastic piece and upwards slide.
3. The small home appliance temperature controller according to claim 2, wherein: the bottom shell is provided with a cylindrical mounting groove, the elastic piece is arranged in the mounting groove, one end of the fusing rod is slidably inserted into the mounting groove, and the other end of the fusing rod is in positioning fit with the metal disc.
4. The small home appliance temperature controller according to claim 3, wherein: the bottom shell is provided with a sliding groove for guiding the transmission part to slide between the movable contact piece and the mounting groove, the sliding groove is communicated with the mounting groove, and the guiding sliding groove extends along the length direction of the mounting groove.
5. The small home appliance thermostat of claim 1 or 2 or 3 or 4, wherein: the thermistor comprises thermistor pieces which are arranged in series, wherein the thermistor pieces are positive temperature coefficient thermistors.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021830551.8U CN212783238U (en) | 2020-08-27 | 2020-08-27 | Small household appliance temperature controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021830551.8U CN212783238U (en) | 2020-08-27 | 2020-08-27 | Small household appliance temperature controller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212783238U true CN212783238U (en) | 2021-03-23 |
Family
ID=75055234
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021830551.8U Active CN212783238U (en) | 2020-08-27 | 2020-08-27 | Small household appliance temperature controller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212783238U (en) |
-
2020
- 2020-08-27 CN CN202021830551.8U patent/CN212783238U/en active Active
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