CN201689827U

CN201689827U - Novel thermal protector

Info

Publication number: CN201689827U
Application number: CN2010201701010U
Authority: CN
Inventors: 刘金元
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-04-19
Filing date: 2010-04-19
Publication date: 2010-12-29
Anticipated expiration: 2020-04-19

Abstract

The utility model relates to the technical field of electronic components, in particular to an overheating and overcurrent protector, which comprises a first electrode, a second electrode and a shell, wherein the first electrode is provided with an accommodating groove, and a thermal response element is arranged at the bottom of the accommodating groove; the second electrode is embedded into the accommodating groove of the first electrode, and an insulating layer is arranged between the second and the first electrodes to separate; the second electrode is divided into at least two sections, a gap is formed between the two sections, the two sections are in bridge joint and communicated with each other through a connecting sheet with better thermal conductivity, and the connecting sheet is matched with the thermal response element to be in contact breakover; and the shell is wrapped, clamped and fixed on the first electrode, and wraps the second electrode with the first electrode, and the first and the second electrodes are respectively led out with a wire joint to connect a lead. The utility model optimizes the structural design of the thermal protector, reduces the material of a product and lowers the assembling cost, the product performance is still kept in a higher level, the volume is small, the thermal response is sensitive, quick break and return can be realized, and the usability of the thermal protector is greatly improved.

Description

Novel thermal protector

Technical field:

The utility model relates to technical field of electronic components, refers in particular to the protector of overheated, the overcurrent that is applied to small power motor, household electrical appliance, fluorescent lamp ballast, lighting, transformer, automotive electric motors etc.

Background technology:

Common thermal protector as the thermal protector of 17AM series, is characterized in that volume is little, and it is fast to disconnect action, and temperature reaches sets the specification automatic shutdown circuit, plays a protective role.This series products is widely used in small power motor, household electrical appliance, fluorescent lamp ballast, lighting, transformer, automotive electric motors etc.Yet,, also require higher to the structural behaviour and the service behaviour of thermal protector along with development of electronic technology; under this background; the spirit that the applicant is adhering to the research innovation, keeping on improving is utilized its professional eye and professional knowledge, works out a kind of thermal protector of structure optimization.

The utility model content:

The purpose of this utility model is to provide a kind of compact conformation, firm, working stability, the thermal protector that is active in one's movements.

For achieving the above object, the utility model adopts following technical scheme:

Novel thermal protector comprises:

First electrode, it has an accepting groove, is provided with heat responsive element in the inner bottom part of accepting groove; Second electrode, it is implanted in the accepting groove of first electrode, and is provided with the insulating barrier separation between second electrode and first electrode; Second electrode self is divided into two sections at least, forms at interval the gap between two sections, and is better than the brace bridge joint conducting of second electrode by heat conductivility, and brace is provided with the contacts mates heat responsive element and touches conducting; Shell, its double team are fixed on first electrode, wrap up second electrode with first electrode, and the shell inboard compresses second electrode by collets; First electrode and second electrode lead to wire terminal separately, with the lead of plugging into.

Described brace width is less than the width of second electrode.

Described shell inboard is provided with an arch groove that arches upward, and the corresponding arch of collets groove inserts to be installed, and gets collets front and back end, location on the arch groove ready.

The accepting groove side of described first electrode forms the U-shaped bound edge; And second electrode is a flat piece, and the U groove that carries over the U-shaped bound edge is implanted connection; Heat responsive element in first electrode is arranged in the groove of accepting groove inner recess.

The periphery of described thermal protector also is socketed with an insulation rubber tube, and insulation rubber tube leaves port.

The utility model is by improving the structural system of product; optimize the thermal protector structural design; product material is reduced and assembly cost decline; properties of product still maintain higher level; the integral manufacturing cost of product descends, and the bodily form is smaller and more exquisite, the thermal response sensitivity; reach quick disconnection and reset, promote the serviceability of thermal protector greatly.

The utility model advantage again is the design of second electrode segment; and be better than the brace bridge joint conducting of second electrode by heat conductivility; the gap that forms between section and the section can promote circulation of air, improves the heat absorption and the heat radiation function of heat responsive element, promotes the service behaviour of thermal protector.

Description of drawings:

Accompanying drawing 1 is the utility model contour structures schematic diagram;

Accompanying

drawing

2,3 is the STRUCTURE DECOMPOSITION schematic diagram of Fig. 1;

Accompanying drawing 4 is the utility model internal structure side cross-sectional schematic;

Accompanying drawing 5 is the utility model internal structure section cross-sectional schematic;

Accompanying drawing 6 uses schematic diagram for the utility model.

Embodiment:

Below in conjunction with accompanying drawing the utility model is further specified:

Consult shown in Fig. 1～6, thermal protector described in the utility model mainly comprises first electrode 1, second electrode 2 and shell 3.

First electrode 1 has an accepting groove 11, is provided with heat responsive element 4 in the inner bottom part of accepting groove 11; Second electrode 2 is implanted in the accepting groove 11 of first electrode, and is provided with insulating barrier 5 separations between second electrode 2 and first electrode 1, and insulating barrier 5 is an insulating paper, and it clads second electrode, 2 backs and implants installation with second electrode 2; Second electrode 2 self is divided into two sections (shown in the figure being two sections) at least, forms at interval gap 22 between two sections, and is better than the brace 8 bridge joint conductings of second electrode by heat conductivility, and brace 8 is provided with contacts mates heat responsive element 4 and touches conducting; Shell 3 is a heat conductor, and its double team is fixed on first electrode 1, wraps up second electrode 2 with first electrode 1, and shell 3 inboards compress second electrode 2 by collets 6; Shell 3 inboards are provided with an arch groove 31 that arches upward, collets 6 corresponding arch grooves 31 insert to be installed, on the arch groove, get collets front and back end, location ready, be after collets 6 are packed into, employing is got mode ready and is obtained interior salient point 32, salient point 32 is located the front and back ends of collets 6 just in the front and back, thereby collets 6 is limited simple in structure, easy making.Collets 6 play insulation and bridge interconnect function, make organic connections between each parts of product, sound construction, it pushes down second electrode 2 from top to bottom, second electrode 2 tightly is fixed in the accepting groove 11 of first electrode 1, guarantee that the contact front on the brace 8 touches heat responsive element 4, reduce the situation of the loose contact that misplaces contact and cause.The end of first electrode 1 and second electrode 2 also leads to

wire terminal

12,21 separately, and with the lead of plugging into,

wire terminal

12,21 adopts the riveted joint mode to connect lead, can be according to the lead of the various different sizes of client's needs riveted, different length.

Shown in Fig. 2,3,5, accepting groove 11 sides of first electrode 1 form U-shaped bound edge 13; And second electrode 2 is a flat piece, and the U groove that carries over U-shaped bound edge 13 is implanted connection; Second electrode 2 is divided into two sections, forms at interval gap 22 between two sections, and is better than the brace 8 bridge joint conductings of second electrode by heat conductivility, and brace 8 width are less than the width of second electrode 2.Gap 22 can promote circulation of air, and the thermal conductivity of brace 8 is better, thereby can improve the heat absorption and the heat radiation function of heat responsive element, promotes the service behaviour of thermal protector.Heat responsive element 4 in first electrode 1 is arranged in the groove 14 of accepting groove inner recess.From section; accepting groove 11 is step and forms, and the upper strata step mainly is to satisfy second electrode 2 combination is installed, and second step, promptly the groove 14 of depression mainly provides the space of the installation and the work of heat responsive element 4; compact conformation, reasonable; product material is reduced and assembly cost decline, properties of product still maintain higher level, and the integral manufacturing cost of product descends; the bodily form is smaller and more exquisite; the thermal response sensitivity reaches quick disconnection and resets, and promotes the serviceability of thermal protector greatly.

Shown in Figure 4, during use, the periphery of thermal protector also is socketed with an insulation rubber tube 7, and insulation rubber tube 7 leaves port.Insulation rubber tube 7 can prevent that thermal protector from contacting with motor coil or metal object and cause short circuit; And insulation rubber tube 7 leaves port, and the thermal protector recovery operation is guaranteed in ventilative heat radiation.After being installed to thermal protector on the corresponding work equipment, when temperature reached the setting specification, the heat responsive element 4 distortion trippings in the thermal protector were connected with second electrode, thereby reach automatic shutdown circuit, play a protective role.The utility model can be widely used in small power motor, household electrical appliance, fluorescent lamp ballast, lighting, transformer, automotive electric motors etc.; The shell 3 and first electrode 1 form the heat absorption system, can be rapidly the heat of periphery be passed to heat responsive element 4, and heat responsive element 4 can be worked more accurately.

The utility model is optimized the thermal protector structural design by improving the structural system of product, obtains a kind of compact conformation, firm, and working stability, the thermal protector that is active in one's movements promote product up-gradation.

Claims

1. novel thermal protector is characterized in that: comprise

First electrode, it has an accepting groove, is provided with heat responsive element in the inner bottom part of accepting groove;

Second electrode, it is implanted in the accepting groove of first electrode, and is provided with the insulating barrier separation between second electrode and first electrode; Second electrode self is divided into two sections at least, forms at interval the gap between two sections, and is better than the brace bridge joint conducting of second electrode by heat conductivility, and brace is provided with the contacts mates heat responsive element and touches conducting;

Shell, its double team are fixed on first electrode, wrap up second electrode with first electrode, and the shell inboard compresses second electrode by collets;

First electrode and second electrode lead to wire terminal separately, with the lead of plugging into.

2. novel thermal protector according to claim 1 is characterized in that: the brace width is less than the width of second electrode.

3. novel thermal protector according to claim 1 is characterized in that: described shell inboard is provided with an arch groove that arches upward, and the corresponding arch of collets groove inserts to be installed, and gets collets front and back end, location on the arch groove ready.

4. novel thermal protector according to claim 1 is characterized in that: the accepting groove side of first electrode forms the U-shaped bound edge; And second electrode is a flat piece, and the U groove that carries over the U-shaped bound edge is implanted connection; Heat responsive element in first electrode is arranged in the groove of accepting groove inner recess.

5. novel thermal protector according to claim 1 is characterized in that: the periphery of described thermal protector also is socketed with an insulation rubber tube, and insulation rubber tube leaves port.