CN201084647Y

CN201084647Y - A magnetic temperature-sensitive switch

Info

Publication number: CN201084647Y
Application number: CNU2007200437447U
Authority: CN
Inventors: 吕永强
Original assignee: YIXING CITY SITONG HOUSEHOLD APPLIANCE COMPLEMENT FACTORY
Current assignee: YIXING CITY SITONG HOUSEHOLD APPLIANCE COMPLEMENT FACTORY
Priority date: 2007-10-16
Filing date: 2007-10-16
Publication date: 2008-07-09
Anticipated expiration: 2017-10-16

Abstract

The utility model relates to an improved magnetic thermosensitive switch, which is characterized in that: the encapsulated housing is a ceramic case where one end is open, the other end is closed, and the cross section is shaped like a transverse gourd; two connecting conductors for a temperature sensing component, with one being bent and the other outgoing in parallel with the bent one, are inserted into the ceramic case and sealed by fluid sealant. As the components of the magnetic thermosensitive switch are greatly reduced, and the assembling processes are enormously simplified, the product marks can be directly die-pressed on the surface of the ceramic case, thus the external marks are unnecessary. Compared with the prior thermosensitive switch, the utility model has the advantages of good insulation performance, high safety, ensured insulation strength and dielectric strength, less component parts, less and easier assembling procedures, high assembling efficiency, convenience for mass production, and lower production costs. Moreover, the utility model has the advantages of saving up to 10 production processes, lowering the difficulty of pouring the fluid sealant, greatly facilitating the operations for the staff, improving the production efficiency by about 20 %, tremendously enhancing the pass rate of product assembling, reducing the costs of raw materials by about 15 %, and lessening the production costs approximately by 10 %.

Description

Magnetic Thermo-sensitiveswitch

Technical field

Utility model is about the improvement to Magnetic Thermo-sensitiveswitch, relates in particular to the switch package shell structure.

Background technology

Magnetic Thermo-sensitiveswitch, disclosed Magnetic Thermo-sensitiveswitch such as Chinese patent CN2460945, CN2465309, CN2507124, CN2577430, CN2617024, CN2886791, CN1402287 for example, as a kind of thermal switch, in household electrical appliances, automobile, electromechanical equipment etc. are multi-field, application is arranged, wherein a kind of purposes is as refrigerator temperature autocompensation installation switch, be arranged in the refrigerating chamber of refrigerator, by detecting temperature of refrigerating chamber in refrigerator, automatically be switched on or switched off the compensation thermal source, reach better energy conservation and consumption reduction effects.The product typical structure as shown in Figure 1, by the metal tube 6 of both ends open, built-in tongue tube 3, and the temperature module of the Hard Magnetic ring 2 of overcoat and soft magnetism ring 4 compositions, the spacing clamp 8 at two ends and fluid sealant 1 reach two ends and draw lead 5, and overcoat is printed on the plastic bushing 7 of mark and forms.This structure magnetic temperature-sensitive switch, it is many not only to make up parts, and assembling procedure is many and loaded down with trivial details, the assembling more complicated, after tongue tube, hard, soft magnetism ring are formed the temperature module combination, also need to add cover and insert spacing clamp, put into metal shell again, the embedding epoxy sealing glue at two ends, and for guaranteeing insulation property, two ends need gradation to mend glue, and the casting glue water consumption is big, and the trickling waste is also many.Secondly, in assembling process, metal sleeve surface viscose glue when avoiding encapsulating, also need to add cover PVC thermoplastic sleeve pipe at metal sleeve earlier, also need remove the thermoplastic sleeve pipe after encapsulating is finished, not only increase useless production process, and increase the cost that uses the thermoplastic sleeve pipe, and waste material causes production cost higher relatively.Besides, because shell adopts metal sleeve, from the insulation angle assembling is had relatively high expectations, if misoperation will influence dielectric strength, the dielectric strength of product, even brings potential safety hazard; If the employing plastic bushing then because the plastics thermal conductivity is not so good as metal relatively, and can influence temperature-sensitive performance and sensitiveness.

Though the open lead-out wire of Chinese patent CN2893902 is with bringing out line structure, forming parts does not have to reduce substantially, and operational sequence is similar substantially, and above-mentioned defective substantially still exists, and production efficiency is still lower.

The utility model content

The utility model purpose is to overcome the deficiency of above-mentioned prior art, provides a kind of parts few, and assembling is simple, and cost is low, the Magnetic Thermo-sensitiveswitch that response to temperature is good.

The utility model purpose realizes that main the improvement is that the switch package shell adopts an end opening, end sealing, and its cross section is the porcelain blank pipe of horizontal Pear-Shaped, thereby assemble products from parts have been reduced, simplify assembling procedure, reduced cost (material and production cost), realize the utility model purpose.Specifically, the utility model Magnetic Thermo-sensitiveswitch, comprise by tongue tube, hard, the temperature module that the soft magnetism ring is formed of overcoat, and package casing and perfusion fluid sealant, it is characterized in that package casing is an end opening, end sealing, the cross section is the porcelain shell of horizontal Pear-Shaped, the temperature module connects bending of lead and another root is outlet insertion porcelain shell arranged side by side, is sealed by fluid sealant.

Utility model porcelain encapsulation shell, the long 3-4cm of shell keeps high-sensitive temperature-sensitive characteristic for making it, and its wall thickness better adopts 1 ± 0.2mm, Pear-Shaped master cylindrical cavity internal diameter 6 ± 1mm.Thin tube wall can have good temperature-sensitive performance, and less appropriate main cylindrical cavity can make the temperature module lean on the subsides porcelain tube, also helps obtaining good response to temperature, and assembling is also convenient.

Porcelain encapsulation shell cross section is horizontal Pear-Shaped, promptly be a large circle and a small circle ring connectivity structure, wherein the large circle cavity is for inserting the temperature module, the small circle ring cavity is drawn the lead installing space for bending, so both helped reducing the gap between package casing and the temperature module, draw the thrust that the lead bending produces again, also make the temperature-sensitive magnet ring good the contact be arranged, can obtain better temperature-sensitive performance with the shell wall.

In addition, mould can be passed through in porcelain shell surface, impresses irregular product labelling, makes mark become the permanent marks that is difficult for removal by sintering, can omit label in addition sleeve pipe or labeling, also helps reducing cost.

The utility model Magnetic Thermo-sensitiveswitch, because adopt an above-mentioned end opening, end sealing, the cross section is the porcelain shell of horizontal Pear-Shaped, makes the composition parts of Magnetic Thermo-sensitiveswitch significantly reduce, for example can omit the spacing clamp in the temperature module two ends, interim heat-shrinkable T bush, reduced unnecessary waste, and also simplified the assembly operation operation greatly, an end closure shell, the perfusion fluid sealant is simple, and can shorten shell length, the fluid sealant consumption also obtains reducing, and only is original 1/2; In addition, the porcelain shell can also can omit outer labelling directly at surface modes die pressing product mark, also helps reducing cost.The utility model Magnetic Thermo-sensitiveswitch, existing Magnetic Thermo-sensitiveswitch: good insulation preformance, safe, can guarantee dielectric strength and dielectric strength; It is few to form parts, and assembling procedure is few and simple, can omit 6 road heat-shrinkable T bush operations, glue process is mended in 2 roads, and sheath and 1 road suit sheath operation are cut in 1 road, amount to 10 road production processes, also reduced simultaneously the difficulty of perfusion fluid sealant, be very easy to employee's operation, the packaging efficiency height, production efficiency can improve about 20%, the product packaging qualification rate also has big raising, dielectric strength for example: 10,000 products of original production, have 4～7 defective, be qualified product now; Dielectric strength; 10,000 products of original production, have 2～3 defective, now be qualified product, be easier to produce in batches, product cost is low, it is about 15% that cost of material can reduce, it is about 10% that production cost can reduce, temperature-sensitive time and metal shell are similar.

Description of drawings

Fig. 1 is the prior art structural representation.

Fig. 2 is a utility model Magnetic Thermo-sensitiveswitch structural representation.

Fig. 3 is Fig. 2 package casing A-A schematic cross-section.

Embodiment

Embodiment: referring to Fig. 2,3, the utility model Magnetic Thermo-sensitiveswitch, by switch tongue tube 3, overcoat soft magnetism ring 4 and two Hard Magnetic rings 2.1 and 2.2 are formed the temperature modules, the tongue tube two ends connect lead 5, wherein a double flat is arranged side by side with bringing out line, inserts the aluminium oxide porcelain shell 9 of long 3.5cm, an end opening, end sealing, inserts the back from openend perfusion epoxy sealing glue 1.Wherein the porcelain shell 9, and be communicated with by a large circle 9.1 and a small circle ring 9.2 and be horizontal cucurbit structure, great circle internal diameter 6mm, wall thickness 1mm, there is concavo-convex mark (in show) on porcelain shell surface by die marks

Claims

1. Magnetic Thermo-sensitiveswitch, comprise by tongue tube, hard, the temperature module that the soft magnetism ring is formed of overcoat, and package casing and perfusion fluid sealant, it is characterized in that package casing is an end opening, end sealing, the cross section is the porcelain shell of horizontal Pear-Shaped, and the temperature module connects bending of lead and another root is outlet insertion porcelain shell arranged side by side, is sealed by fluid sealant.

2. according to the described Magnetic Thermo-sensitiveswitch of claim 1, it is characterized in that the porcelain shell is an aluminium oxide ceramics, wall thickness 1 ± 0.2mm, cucurbit great circle internal diameter 6 ± 1mm.

3. according to the described Magnetic Thermo-sensitiveswitch of claim 1, it is characterized in that the little garden placement of porcelain shell cucurbit lead.

4. according to claim 1,2 or 3 described Magnetic Thermo-sensitiveswitch, it is characterized in that the long 3-4cm of porcelain shell.

5. according to claim 1,2 or 3 described Magnetic Thermo-sensitiveswitch, it is characterized in that there is concavo-convex mark on porcelain shell surface.

6. according to the described Magnetic Thermo-sensitiveswitch of claim 4, it is characterized in that there is concavo-convex mark on porcelain shell surface.