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Snap action thermostat with overheating safety protection

A sudden jump thermostat and safety protection technology, applied in the direction of thermal switch parts, etc., can solve the problems of inconvenient installation, high price, difficult assembly and quality control, etc., and achieve the effect of simple assembly and reliable quality

Active Publication Date: 2015-08-05
美平电器制品 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, compared with the traditional manual reset jump thermostat, the automatic reset jump thermostat has a complex structure and is inconvenient to install. Therefore, the price is relatively high. For example, the invention with application number 201220420573.6 discloses a power cut Automatic reset type bimetal temperature controller, the temperature controller includes a base, the first and second contact pieces installed in the base, the first and second wiring pieces installed at the bottom of the base, and the card embedded on the base The upper cover and the bimetal installed in the upper cover, wherein the movable reed on the second contact piece is electrically connected with the first contact piece to form a first path; the base is provided with a device for connecting the bimetal piece and the upper The cover is encapsulated in the aluminum cover in the base; one end of the insulating actuator rod installed in the base is in conflict with the moving reed, and the other end is in contact with the bimetal sheet through the upper cover; the bottom of the upper cover is provided with a conductive sheet and is located on the conductive sheet The thick film between the conductive sheet is electrically connected to the thick film, and the conductive sheet is electrically connected to the first and second wiring sheets through short springs and long springs respectively to form a second path; the second path is connected to the first path connected in parallel
Since the above temperature controller needs to be installed with two small springs, its assembly and quality control are difficult

Method used

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  • Snap action thermostat with overheating safety protection
  • Snap action thermostat with overheating safety protection
  • Snap action thermostat with overheating safety protection

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Such as figure 1 , 2 As shown, the jump-type thermostat for overheating safety protection in this embodiment includes a housing 1, an aluminum cover 2 fixed on the housing 1, a guide frame 3 fixed between the aluminum cover 2 and the housing 1, a fixed The bimetal 4 between the guide frame 3 and the aluminum cover 2, the action rod 5, the static contact assembly 6, the movable contact assembly 7 and the two terminals 8; the action rod 5 is installed in the guide frame 3, The end of the action rod 5 faces the movable contact assembly 7; the bimetal 4 is located between the aluminum cover 2 and the action rod 5; the static contact assembly 6 and the movable contact assembly 7 are respectively connected to the corresponding The connecting terminal 8 is pressed tightly on the inner and outer sides of the bottom surface of the housing 1; the key point is that the housing 1 is made of ceramics, and a layer of resistive film 10 is laid on the bottom surface. There are two res...

Embodiment 2

[0024] The above-mentioned embodiment 1 only uses the riveting force of the rivet 9 to press the connection terminal 8 and the electrode film 11. The reliability depends on the size of the riveting force, and the reliability is slightly low. In order to solve this problem, this embodiment proposes The following different structures:

[0025] Such as image 3 As shown, the connecting terminal 8 is embedded in the groove provided on the bottom surface of the housing 1, and the connecting terminal 8 is pressed with an elastic piece 13 through the rivet 9, and the end of the elastic piece 13 is pressed against the electrode. on film 11. The elastic piece 13 always keeps in contact with the terminal 8 and the electrode film 11 under its own elastic force, and both the elastic piece 13 and the electrode film 11 are good conductors, so the electrical connection between the terminal 8 and the resistance film 10 can be guaranteed to be reliable.

[0026] Further, a mica sheet 14 is p...

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Abstract

The invention brings forward a snap action thermostat with overheating safety protection. The snap action thermostat with the overheating safety protection is simple in structure, convenient to assemble and reliable to use. The snap action thermostat, after overheat protection, can be reset to work only through power failure, thereby having quite good safety. The snap action thermostat with the overheating safety protection comprises a housing, an aluminum cover, a guiding frame, a bimetallic strip, a motion rod, a static contact assembly, a moving contact assembly and two wiring terminals. The static contact assembly and the moving contact assembly are respectively compacted at the inner side and the outer side of the bottom surface of the housing with the corresponding wiring terminals through rivets. The key is that a resistor membrane is arranged between the bottom surface of the housing and the wiring terminals, and the two wiring terminals are electrically connected through the resistor membrane. Compared to a conventional snap action thermostat, the position of the resistor membrane is arranged at the bottom surface of the housing, the resistor membrane is compacted with the wiring terminals by use of the rivets, and the installation structure of springs for compaction is eliminated, such that the assembling is simpler, and the quality is more reliable.

Description

technical field [0001] The invention belongs to the technical field of electric appliance temperature control, in particular to a jump-type temperature controller for overheating safety protection of household electric heating appliances. Background technique [0002] At present, compared with the traditional manual reset jump thermostat, the automatic reset jump thermostat has a complex structure and is inconvenient to install. Therefore, the price is relatively high. For example, the invention with application number 201220420573.6 discloses a power cut Automatic reset type bimetal temperature controller, the temperature controller includes a base, the first and second contact pieces installed in the base, the first and second wiring pieces installed at the bottom of the base, and the card embedded on the base The upper cover and the bimetal installed in the upper cover, wherein the movable reed on the second contact piece is electrically connected with the first contact ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H37/52
Inventor 梁其章
Owner 美平电器制品