CN2554888Y - Heater using positive characteristic thermistor resistance element - Google Patents

Abstract

The utility model provides a heater using a positive characteristic thermistor. The heater does not adopt a silicon adhensive coating but forms a combining and fixing part that can implement electrically mechanical protections to the PCT components, thereby simplifying the working procedure of inserting the PCT components into products, preventing the PCT components from being damaged to lower the ratio of unqualified products and then enhancing the reliability of products. The heater consists of an upside lateral combining and fixing part, which is formed on the bilateral contact face of the upper shell body combined with the lower shell body lengthwise and guides the combination of the plate electrode and the PCT components; a lower lateral combining and fixing part, which is formed on the bilateral contact face of the upper shell body combined with the lower shell body, is corresponding to the upside lateral combining and fixing part lengthwise and is combined with the upside lateral combining and fixing part; a guide groove, which is formed on the two flanks of the upper and the lower shell body along the shell body lengthwise and a fixing and retaining component, which is combined with the guide groove and exerts a compressed fixation to the upper and the lower shell body.

Description

Use the heater of positive temperature coefficient thermis element

Technical field

The utility model relates to use positive temperature coefficient thermis element (PositiveTemperature Coefficient; be also referred to as PCT below) heater; be particularly related to and implement mechanical protection and to increase bed knife the PCT element; and the insertion operation of PCT element is implemented easily, thereby can utilize heater further raising conductivity and thermal conductivity, the positive temperature coefficient thermis element.

Background technology

The thermistor element PCT of conventional positive characteristic has the characteristic that resistance can sharply rise when surpassing Curie temperature.Therefore the thermistor of this positive characteristic has the so-called temp autocontrolled system function that irrespectively becomes uniform temperature with ambient temperature when being applied with voltage.

In recent years, utilized this function to constitute heat generating member and used, its range of application is very wide, also have this positive temperature coefficient thermis is gathered according to proper number, and the fin that makes the heat that is produced can implement the sheet metal of heat radiation engages and formation heating heater.

For the form that this fin is combined into the heater place, the form that makes the fin embedding is arranged and fin is divided into up and down and the form of combination.

A kind of heater body structure of the form of fin embedding is shown among Fig. 1 (a), Fig. 1 (b).Just as shown in the drawing, its structure is that the PCT element guide plate 2 that is carrying PCT element 2a in combining main body 1, the battery lead plate 3 that has electrode usefulness connector 3a combine with insulating thin 4, and combine with heating panel 5, and also form power supply at above-mentioned combining main body 1 place and supply with and use connector 1a in the outside of combining main body 1.

Fin is divided into up and down and the structure of combining form is shown among Fig. 2 (a), Fig. 2 (b).Just as shown in the drawing, heater 10 is formed with a plurality of fin 11a, and a side central part have a plurality of on lower house 11,12, wherein built-in the PCT element guide plate 13 that combines with a plurality of PCT element 13a, lapped insulation thin plate 14 on the housing therein, power supply connecting plate 15, and end sealing and insulation shield member 16, the side joint point of PCT element 13a is connected with described power supply connecting plate 15, the opposite side contact according to housing 11, the inner face side of 12 contacted modes and two housings is bonded with each other, and is connected and fixed by a plurality of hold assemblies 17.

And when described housing 11,12 is implemented assembling, also be formed with the silicon adhesive linkage 18 that makes described housing 11,12 airtight usefulness at its seam areas place.

If yet adopt the form that makes the fin embedding and fin be divided into up and down and the heater configuration of the form of combination, because the electrode surface of fin and thermistor element engages by heat-resisting conductibility bonding agent, so be difficult to obtain uniform quality, complex manufacturing.And, owing to the PCT element exposes to the open air in the outside, thus the dewfall phenomenon produced by operation front and back and ambient temperature difference, and then might become the reason of electric leakage.

And, the heater structure that makes the form that described fin embeds is owing to be at the combining main body place, make the structure of the PCT element guide plate that is equipped with the PCT element and other constituent part combination, so the insertion operation of part is very complicated, thereby can occur owing to PCT element breakage etc. causes the inferior problem of product quality.

And, make described fin be divided into up and down the also heater structure of combining form, be to adopt insulating thin and silicon adhesive linkage that housing is implemented sealing, so fluffing through bonding meeting after the certain hour, when the bonding force forfeiture appearred in this adhesive linkage, moisture can enter to enclosure interior, and not only insulating thin damages, but also have the PCT element is produced baneful influence, the heat transferred that produces at the PCT element can produce this class problem of thermal losses during to fin.

And on lower house implement in conjunction with after, adopt a plurality of hold assemblies that housing is implemented in conjunction with fixing, but at this moment since to repeat several times to housing implement in conjunction with operation, therefore also have the assembleability and the lower problem of production efficiency of heater.

The utility model content

The utility model is exactly to address the above problem and the utility model made; the purpose of this utility model just provides a kind of heater that utilizes the positive temperature coefficient thermis element; in the formation of the heater body of utilizing the PCT element; engage fixed part by on housing, forming; instead of electric, mechanical protection PCT element and the silicon adhesive linkage that in housing airtight, uses; thereby can simplify the insertion operation of PCT element to product; prevent the breakage of PCT element; reduce bad product ratio, improve the trustworthiness of product.

Another purpose of the present utility model provides a kind of heater that utilizes the positive temperature coefficient thermis element, by in the heater housing that is divided into up and down, form with once assemble on lower house implement to add the fixed clamp member of press fit, prevent that foreign matter from flowing within the housing, improve the assembling operation of product, and part is decomposed easily.

A purpose more of the present utility model provides a kind of heater that utilizes the positive temperature coefficient thermis element, as the insulating thin that in product shell, is provided with, owing to use and make this insulating thin by the ceramic wafer that can prevent surrounding environment influence, so can prevent from after long-time the use, to lose insulating properties, thereby can improve the heat conduction efficiency of product, can semipermanent use.

In order to realize above-mentioned purpose, the heater that utilizes the positive temperature coefficient thermis element of the present utility model, it is the last lower house that combines with a plurality of fin respectively, the insulating thin that on described, lays in the lower house, the battery lead plate of combination in the lower house on described, and combination in the lower house on described, the PCT element guide plate that carries the PCT element successively in conjunction with and constitute, it is characterized in that also having: described battery lead plate and PCT element engaged fixed part in conjunction with the upper side of implementing guiding on the composition surface, both sides of the described upper body that combines with described lower case towards vertical formation; Composition surface, both sides in the described lower case that combines with described upper body engages fixed part towards vertically engaging lower side that fixed part forms accordingly, that combine with described upper side joint fixed part with described upper side; The guide groove that forms towards the longitudinal direction of described housing place, two sides of lower house on described; And combine with described guide groove, the described lower house of going up is implemented to add the fixed clamp member that press fit is used.

Description of drawings

Fig. 1 (a) is the exploded perspective view of the formation of an embodiment of the heater of expression use positive temperature coefficient thermis element; Fig. 1 (b) is for being illustrated in the stereogram in conjunction with heat liberation board in conjunction with Fig. 1 (a) main body place.

Fig. 2 (a) is the exploded perspective view of the formation of another embodiment of the heater of expression use positive temperature coefficient thermis element in the past; Fig. 2 (b) is the sectional arrangement drawing of Width of the bonding state of Fig. 2.

The exploded perspective view that Fig. 3 utilizes the heater of positive temperature coefficient thermis element of the present utility model to constitute for expression.

Fig. 4 (a) is in the sectional arrangement drawing of the Width of bonding state for the heater that utilizes positive temperature coefficient thermis element of the present utility model; Fig. 4 (b) is the amplification profile of the A portion among Fig. 4 (a); Fig. 4 (c) is the amplification profile of the B portion among Fig. 4 (a).

Fig. 5 is the major part decomposing section that utilizes in the heater of positive temperature coefficient thermis element of the present utility model.

Fig. 6 (a) is in the sectional arrangement drawing of the longitudinal direction of bonding state for the heater that utilizes positive temperature coefficient thermis element of the present utility model; Fig. 6 (b) is the amplification profile of the C portion among Fig. 6 (a).

Among the figure: the 100-main body, the 200-upper shell, the 200a-upper side engages fixed part, the 300-lower house, the 300b-lower side engages fixed part, 400-PCT element guide plate, 400a-resting guide joint portion, the 500-resting guide, 600-PCT element, 700-battery lead plate, the 800-insulating thin, the 900-fixed clamp member, 901-is in conjunction with fixed part, the 1000-guide groove.

Embodiment

Below with reference to accompanying drawing, the heater of the positive temperature coefficient thermis element that utilizes an embodiment of the utility model is elaborated.

Fig. 3 uses the formation exploded perspective view of the heater of positive temperature coefficient thermis element of the present utility model for expression; Fig. 4 (a) is in the Width sectional arrangement drawing of bonding state for the heater that uses positive temperature coefficient thermis element of the present utility model; Fig. 4 (b) is the amplification profile of the A portion among Fig. 4 (a); Fig. 4 (c) is the amplification profile of the B portion among Fig. 4 (a); Fig. 5 is the major part decomposing section of the heater of use positive temperature coefficient thermis element of the present utility model; Fig. 6 (a) is in the sectional arrangement drawing longitudinally of bonding state for the heater that uses positive temperature coefficient thermis element of the present utility model; Fig. 6 (b) is the amplification profile of the C portion of Fig. 6 (a).

Shown in Fig. 3 to Fig. 6 (a), Fig. 6 (b), use the heater body 100 of positive temperature coefficient thermis element to have upper body 200, upper side engages fixed part 200a, fin 201,301, PCT element 600, PCT element guide plate 400, resting guide 500, resting guide joint portion 400a, battery lead plate 700, electrode connector 700a, insulating thin 800, lower case 300, housing connector 300a, lower side engages fixed part 300b, guide groove 1000, and fixed clamp member 900 or the like.

Described lower case 300 is also in its lower end, according to projection equally spaced the fin 301 that a plurality of discharges heat are used is set.

On the described composition surface, both sides of the upper surface of side body 300 down, along the described joint fixed part 300b of the described lower side of vertical formation of side body 300 down, implement in conjunction with fixing so that when combining, combine fixed part 200a with described upper side with described upper body 200.

Described insulating thin 800 is arranged between described side body 300 down and the battery lead plate as described later 700, so that irrespectively keep and the described electric insulating state of going up lower house 200,300 with surrounding environment.

Described battery lead plate 700 is arranged on the top of described insulating thin 800, and the electrode connector 700a that is connected at the power supply that a side also forms with supply capability is used.

And described insulating thin parts 800 can be made of the ceramic material that can increase electric insulating state.

Described PCT element guide plate 400 is equipped with when applying voltage and ambient temperature irrespectively forms the PCT element 600 of uniform temperature, and is set at the top of described battery lead plate 700.

Described resting guide 500 for described PCT element guide plate 400 in conjunction with being fixed on described going up in the lower house 200,300, and combine with a end on the described PCT element guide plate 400.

In addition, described resting guide joint portion 400a is in order to be fixed on described resting guide 500 on the described PCT element guide plate 400, and the end on described PCT element guide plate 400 forms.

Described upper body 200 is the end face place thereon, also is provided with according to projection equally spaced to make heat emit a plurality of fin 201 of usefulness.

Described upper side engages fixed part 200a and implements combinations in order to guide described battery lead plate 700 and PCT element 600, combine with described lower side fixed part 300b accordingly along described housing 200 vertically on described the composition surface, both sides of the lower end of side body 200 form.

And engage fixed part 200a place in described upper side, also be formed with second on the lower side joint fixed part 300b that makes as described later in conjunction with groove 300c and second in conjunction with projection 300d replace combination first in conjunction with projection 201b and first in conjunction with groove 200c.

In addition, engage fixed part 300b place in described lower side, be formed with insertion in conjunction with first on the described upper side joint fixed part 200a in conjunction with projection 201b second in conjunction with groove 300c.

And engage fixed part 300b place in described lower side, also be formed with insert be combined in first on the described upper side joint fixed part 200a in conjunction with groove 200c second in conjunction with projection 300d.

Described guide groove 1000 is according to implementing to combine fixing mode with fixed clamp member 900 as described later, along the described place, two sides of going up lower house 200,300 of vertically being formed on of described housing 200,300.

Described fixed clamp member 900, for after described lower case 300, insulating thin 800, battery lead plate 700, PCT element guide plate 400 and upper body 200 are implemented overlapping setting, implement the fixing processing of pressurization, thereby combine with the described guide groove 1000 that goes up two sides on the lower house 200,300.

And described fixed clamp member 900 is made by marmem.

Described fixed clamp member 900 makes in conjunction with fixed part 901 along described vertical formation of going up lower house 200,300 also according to can once inserting the mode that is fixed on described guide groove 1000.

And the described lower house the 200, the 300th of going up is made by the metal material with satisfactory electrical conductivity and thermal conductivity.

At an end of described lower case 300, also be formed with the housing that is connected connector 300a with the power supply of supply capability.

Below with reference to as Fig. 3 to Fig. 6 (a), Fig. 6 (b), describe the course of action of heater of the positive temperature coefficient thermis element of an embodiment of the present utility model who utilizes above-mentioned formation in detail.

At first, shown in Fig. 3 to Fig. 6 (a), Fig. 6 (b), utilize the heater body 100 of positive temperature coefficient thermis element of the present utility model, on in conjunction with a plurality of fin 201,301, combine with the PCT element guide plate 400 that is equipped with PCT element 600 in the lower house 200,300, form the fixedly resting guide joint portion 400a of usefulness of resting guide 500 by the end on described PCT element guide plate 400, thus can be with described resting guide 500 in conjunction with being fixed on 400a place, described resting guide joint portion.

In this state, can with surrounding environment irrespectively can keep with the described electric insulating state of going up lower house 200,300, by the insulating thin 800 of ceramic material, be clamped between described lower case 300 and the battery lead plate 700.

And, insulating thin 800 can be arranged on the top of described lower case 300, battery lead plate 700 is arranged on the top of this insulating thin 800, thus stacked PCT element guide plate 400.

As Fig. 4 (a), Fig. 4 (b), shown in Fig. 4 (c), with insulating thin 800, battery lead plate 700, PCT element guide plate 400 is combined in the described lower house 200 of going up, after in 300, can engage the both sides composition surface place that vertically be formed on upper body 200 of fixed part 200a by making upper side towards described housing 200, and engage the corresponding lower side joint of fixed part 200a fixed part 300b on the composition surface, both sides that vertically is formed on lower case 300 of described housing 300 by making, described upper side is engaged fixed part 200a engage fixed part 300b place in conjunction with being fixed on lower side with described upper side.

As shown in Figure 5, when described upper side joint fixed part 200a combines with lower side joint fixed part 300b, with described upper side engage fixed part 200a the 1st in conjunction with projection 201b insert be combined in lower side engage fixed part 300b the 2nd in conjunction with groove 300c place, and with described lower side engage fixed part 300b the 2nd in conjunction with projection 300d insert be combined in described upper side joint fixed part 200a first in conjunction with groove 200c place.

Adopt this mode, can make described upper side engage fixed part 200a the 1st in conjunction with projection 201b and the 1st in conjunction with groove 200c, engage the 2nd of fixed part 300b with lower side respectively and combine groove 300c and the 2nd and replace combination in conjunction with jut 300d.

In this state, can described place, two sides of going up lower house 200,300 will be implemented to add the fixed clamp member 900 that press fit is used to the described lower house of going up, insert to be fixed on.

At this moment, form in conjunction with fixed part 901, can be fixed on described guide groove 1000 places of going up lower house 200,300 should once inserting in conjunction with fixed part 901 in described fixed clamp member 900.

And at this moment, described fixed clamp member 900 is made of marmem, by inserting fixing described fixed clamp member 900, can prevent described the moving about of PCT element 600 in the lower house 200,300 and other part of going up, realize stable conducting.

In this state, if when power supply is applied to described electrode usefulness connector 700a and housing usefulness connector 300a, power supply is applied on two lateral electrodes of PCT element 600, begin heating simultaneously, and heat conducted to described lower house 200,300 places of going up, and then can be dissipated into the outside by the heat that fin 201,301 will conduct.

By making described PCT element 600 and other part are implemented to be respectively formed on the lower house 200,300 in conjunction with fixed part 200a, 300b in conjunction with fixing upper and lower sides, enforcement insertion operation under the mechanical mobile and damaged state can not formed, thereby can increase bed knife, and can realize stable conducting, make the heat conduction efficiency maximization.

And the fixed clamp member 900 by making fixing described housing 200,300 usefulness vertically extends towards housing 200,300, can also prevent to enter to such as foreign matters such as moisture and dust the place, inside of described housing 200,300.

The heater that uses positive temperature coefficient thermis element of the present utility model has been described above, yet the utility model is not limited to the content described in aforesaid embodiment and the accompanying drawing, those skilled in the art can also carry out displacement, distortion and the change of various ways to each thin portion in the scope that does not break away from the utility model technological thought.

As mentioned above, according to the heater that utilizes positive temperature coefficient thermis element of the present utility model, be formed on the heater body housing place that disposes the PCT element by engaging fixed part, simplify the insertion operation of PCT element and other part, improve the packaging efficiency of product, prevent that the PCT element from breakage occurring and reducing bad product ratio, and can increase the bed knife of product, thereby improve reliability of products.And, by the mode that vertically once be provided with of fixed clamp member towards the heater housing can also be able to being prevented that foreign matter from being flowed in the housing by the outside, and can make the assembling of product and apportioned effort easy.By be provided with the electric insulating quality that can guarantee heater body avoid surrounding environment influence, by the insulating thin that constitutes such as ceramic material plate or the like, can also prevent owing to the long-time damaged phenomenon that insulating properties occurs losing of the insulating element that causes of using, thereby can improve the exothermal effect of product, can semipermanent use.

Claims (3)

1. heater that uses the positive temperature coefficient thermis element, by the last lower house that combines with a plurality of fin respectively, be laid in describedly go up insulating thin in the lower house, on described in the lower house battery lead plate of combination and on described in the lower house PCT element guide plate of the lift-launch PCT element of combination it is characterized in that also having successively in conjunction with constituting:

The upper side that forms towards longitudinal direction on the composition surface, both sides of the described upper body that combines with described lower case, the combination of described battery lead plate and PCT element is led engages fixed part;

Composition surface, both sides in the described lower case that combines with described upper body engages fixed part towards the lower side that vertically forms accordingly with described upper bond fixed part, combine with described upper side joint fixed part;

The guide groove that vertically two sides of lower house form on described along described housing;

And combine with described guide groove, the described lower house of going up is implemented to add the fixed clamp member that press fit is used.

2. a kind of heater that uses the positive temperature coefficient thermis element according to claim 1, it is characterized in that described upper side engage the fixed part place also be formed with lower side engage fixed part replace combine the 1st in conjunction with projection and the 1st in conjunction with groove;

Described lower side engage the fixed part place be formed with can insert fixing described upper side engage fixed part the 1st in conjunction with projection the 2nd in conjunction with groove, and described lower side engage the fixed part place be formed with can insert be fixed on described upper side engage fixed part the 1st in conjunction with the groove place the 2nd in conjunction with projection.

3. a kind of heater that is using the positive temperature coefficient thermis element according to claim 1, it is characterized in that described fixed clamp member is to be made of marmem, and be formed with at described fixed clamp member place that the longitudinal direction of lower house on described forms, can insert the joint fixed part that is fixed on described guide groove portion.

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