CN207097772U - Alloy-type temperature fuse - Google Patents
Alloy-type temperature fuse Download PDFInfo
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- CN207097772U CN207097772U CN201720955967.4U CN201720955967U CN207097772U CN 207097772 U CN207097772 U CN 207097772U CN 201720955967 U CN201720955967 U CN 201720955967U CN 207097772 U CN207097772 U CN 207097772U
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Abstract
A kind of alloy-type temperature fuse includes fusible alloy silk and at least one combination pin, and combination pin includes pin and flexible outer pin in the rigidity of interconnection；Pin is arranged in the inner chamber of insulation crust in rigidity, pin one end is connected with fusible alloy silk in rigidity, the other end and one end of flexible outer pin are connected to pin tie point, and pin tie point is arranged in the inner chamber of insulation crust, and are fixed and encapsulated by insulation sealed piece.Tie point is isolated with external environment condition, so as to ensure that the reliability of tie point and electric property.Simultaneously; pin tie point is sealed in Thermal Cutoffs insulation crust by insulation sealed piece; an entirety is formed with insulation crust; make tie point firmly, reliably; the outside of insulation crust is flexible wire; so that it is guaranteed that the leading foot of Thermal Cutoffs possesses good flexibility, warping resistance and tensile strength, suitable for temperature protection position be in movable part, vibration section, narrow space, complexity circuit environment.
Description
Technical field
A kind of alloy-type temperature fuse is the utility model is related to, particularly a kind of alloy for including flexible outer pin
Type Thermal Cutoffs.
Background technology
As electronic equipment and a kind of necessary safeguard protection element of circuit, Thermal Cutoffs has been widely used for various
Household appliances, office equipment, Communication Equipment, audio-visual equipment, LED illumination, lithium ion secondary cell and motor vehicle in.
Existing alloy-type temperature fuse is made up of fusible alloy silk, metal pins and fluxing disconnected agent, is encapsulated in plastics
Or in the insulation crust of ceramics, in normal operating conditions, fusible alloy silk and two pins keep connecting, when equipment or circuit
Environment temperature when being increased to a certain exceptional value, fusible alloy silk fusing, and the disconnecting circuit in the presence of fluxing disconnected agent plays
The effect of protection equipment and circuit.
At present, in the pin leads element of the alloy-type temperature fuse of prior art, majority is certain rigid using having
Sub-thread pure copper wire, tinned wird, CP wire, silver-coated copper wire or pellet electrode.Set yet with electrical equipment in recent years
The complexity of standby circuit structure, the narrow and small of wiring space, temperature protection position are in the reasons such as movable part, generally require pin and lead
Line have it is soft, the characteristic such as be easily bent.Especially, as high-speed camera, motor vehicle can active steering headlight AFS (also referred to as
Self-adapting steering headlight system/self-adaptive headlamp system) etc., its temperature protection component is in movable part, and power input
With needing the working end distance of temperature protection component longer, using the Thermal Cutoffs of conventional rigid wire pin, its pin exists
Narrow and small wiring space is easily used the longevity by the mechanical stress of external world's application, pulling force, torsion etc., these active forces to pin
Life has a negative impact, while the poor sealing of pin and insulation crust may be caused to influence electric property, further may be used
The coupling part of pin and fusible alloy silk part can be caused to be damaged.
Although has portioned product at present by being riveted again with multi cord in the outside of conventional rigid wire pin
Mode is flexible coupling to realize, but connecting portion is easily influenceed by environment such as high temperature, high humidity, many greases of sauce, and reliability drops significantly
It is low, while also do not realize pin flexibility, the function of flexibility thoroughly fundamentally.
In addition, also have portioned product by way of multiply wire pin is welded direct into fusible alloy silk both ends at present come
Realization is flexible coupling, but which easily has situations such as rosin joint, weld partially, influences through-current capability, and the multi cord after disconnection is possible to
It scatter, so as to influence the electric property such as the insulating of product, pressure-resistant.Meanwhile multiply wire pin directly with low-melting alloy silk two
During the connection of end, due to gap inevitably be present in multi cord, the fluxing disconnected agent in insulation crust inner chamber can be made or even melted
The passage that is formed along multi cord gap of low melting point heat-sensitive alloy outwards emerge, and extraneous material also can be along the passage
Into inside insulation crust, the electric properties such as these may all cause the reliability of Thermal Cutoffs, ageing properties, insulation is pressure-resistant
Occur abnormal.
Utility model content
In order to solve the technical problem of above-mentioned prior art, the purpose of this utility model is to provide a kind of alloy-type temperature
Fuse, its is simple in construction, can thoroughly realize being flexible coupling between temperature protection component and power input, and flexible outer pin has
Very high flexibility, the characteristics of bending radius is small, tensile strength is big, adapt to movable part, vibration section, narrow space, complexity
Circuit environment.
In order to realize the purpose, the technical solution of the utility model is as follows：
A kind of alloy-type temperature fuse includes fusible alloy silk and at least one combination pin, and combination pin includes mutual
Pin and flexible outer pin in the rigidity of connection；Pin is arranged in the inner chamber of insulation crust in rigidity, pin one end in rigidity
It is connected with fusible alloy silk, the other end and one end of flexible outer pin are connected to pin tie point, and pin tie point is arranged on absolutely
In the inner chamber of edge shell, and fixed and encapsulated by insulation sealed piece.Pin can be copper in rigidity in the application, copper is tin plating, copper is silver-plated,
Copper nickel plating, copper are gold-plated, copper nickel plating add tin plating, tinning steel-in-copper or tin-coated copper plated aluminium any one.Flexible outer pin can be certainly
By bending, deforming.Insulation sealed piece commonly used in the art is applied both to the application on the market, and it fixes pin tie point simultaneously
Encapsulating, prevents from influenceing the electrical connection of interior outer pin because pin tie point rocks.
Further, Thermal Cutoffs includes two combination pins.Result in formation of draw in a flexible outer pin, rigidity
Pin, Thermal Cutoffs, in another rigidity pin, flexible outer pin electrical connection.
Further, Thermal Cutoffs stretches out pin in opposite directions.When including a combination pin and a rigidity
During pin, flexible outer pin and rigid pin stretch out in opposite directions respectively.When including two combination pins, two flexibilities
Outer pin is stretched out in opposite directions respectively.
Further, Thermal Cutoffs stretches out pin in the same direction.When including a combination pin and a rigidity
During pin, flexible outer pin and rigid pin stretch out in homonymy in the same direction respectively.When including two combination pins, two
Root flexibility outer pin is stretched out in homonymy in the same direction respectively.
Further, pin is one or more combinations of cylinder, tetrahedroid and sheet in rigidity.The application's
Pin is not limited to above-mentioned shape in rigidity, any to can be used for being connected with fusible alloy silk and flexible outer pin in practical application,
And it can realize that the shape of electric power conduction is suitable for the application.When alloy-type temperature fuse includes pin in multiple rigidity
When, it can take different shapes.
Further, flexible outer pin is welded or riveted with pin in rigidity.Its welding is also not limited to soldering, point
The other manners such as weldering, Laser Welding, ultrasonic bonding.
Further, flexible outer pin for naked wire or is coated with the wire of insulating barrier.
Further, the interior intracavitary of insulating barrier insertion insulation crust.
Further, insulating barrier is not inserted into the interior intracavitary of the insulation crust, is flushed with the opening of insulation crust.
Further, wire is by multiply tinned wird, multiply CP wire, multiply silver-coated copper wire or strand copper wire
Any of the stranded bundle multi cord or litzendraht wire that form.
Further, fusible alloy silk is single or more parallel connection.
Further, the sealed piece that insulate is in close contact with insulation crust, pin tie point, forms the entirety of sealing, insulation
Sealed piece forms continuous insulation with insulation crust, makes pin tie point and external insulation.
Further, the sealed piece that insulate is ceramic seal part or plastic closures part.
The beneficial effect of utility model
In the utility model, fusible alloy silk first pass through certain rigid interior pin in insulation crust with flexible outer pin
Connection, and pin tie point by insulation sealed piece tight and is encapsulated in housing, tie point is isolated with external environment condition, from
And it ensure that the reliability and electric property of tie point.Meanwhile pin tie point is sealed in Thermal Cutoffs by the sealed piece that insulate
In insulation crust, an entirety is formed with insulation crust, making tie point, firmly, reliably the outside of insulation crust is that flexibility is led
Line, so that it is guaranteed that the leading foot of Thermal Cutoffs possesses good flexibility, warping resistance and tensile strength, protected suitable for temperature
Shield position is in movable part, vibration section, narrow space, the circuit environment of complexity.The structure can effectively alleviate various outside machineries
The influence to pin such as stress, pulling force, torsion, it is set to possess more preferable anti-interference, bending resistance, shatter-proof, antifatigue performance.
Brief description of the drawings
With reference to accompanying drawings below, the utility model is described in further detail, wherein：
Fig. 1 (A) is 1 integrally-built sectional view of the utility model embodiment；
Fig. 1 (B) is the sectional view of the outer pin of embodiment 1；
Fig. 1 (C) is the sectional view of the sealing part of embodiment 1；
Fig. 2 is 2 integrally-built sectional view of embodiment；
Fig. 3 is 3 integrally-built sectional view of embodiment；
Fig. 4 is 4 integrally-built sectional view of embodiment；
Fig. 5 (A) is the overall knot side view of embodiment 5；
Fig. 5 (B) is Fig. 5 (A) overall structure A-A to sectional view；
Fig. 5 (C) is the three-view diagram of pin in the rigidity of embodiment 5；
Fig. 6 is the part sectioned view for the embodiment 6 for being parallel with two fusible alloy silks；
Fig. 7 (A) is 7 integrally-built sectional view of embodiment；
Fig. 7 (B) is the sectional view of the sealing part of embodiment 7；
Fig. 8 is 8 integrally-built sectional view of embodiment；
Drawing reference numeral explanation：
The fluxing disconnected agent of 1-；
2- fusible alloy silks；
21- fusible alloy silk first ends；
The second end of 22- fusible alloys silk；
Pin in 31- first；
Pin is inner in 311- first；
Pin outer end in 312- first；
Pin in 32- second；
Pin is inner in 321- second；
Pin outer end in 322- second；
4a- radial mode insulation crusts；
4b- axialmode insulation crusts；
5- pin tie points；
6- seals resin；
The outer pins of 71- first
The outer pins of 711- first are inner
The outer pins of 72- second；
The outer pins of 721- second are inner；
7a- insulating barriers；
7b- wires；
8- rivets terminal；
9- rigidity pins；
Pin in 101- first；
Pin in 102- second.
Embodiment
With reference to Figure of description, the utility model is further illustrated.
Embodiment 1
Such as Fig. 1 (A), figure (1) B, shown in figure (1), a kind of alloy-type temperature fuse including fusible alloy silk 2, fluxing break
Agent 1, radial mode insulation crust 4a, pin 32, the first outer pin 71 and the second outer pin 72 in pin 31, second in first.The
Pin the inner 311 is welded with fusible alloy silk first end 21 in the first of pin 31 in one, is drawn in second in the second of pin 32
Pin the inner 321 and the second end 22 of fusible alloy silk are welded.The length of pin 32 is less than radially in pin 31 and second in first
Type insulation crust 4a cavity heights, it is ensured that interior pin entirely falls within radial mode insulation crust 4a inside.Pin 31 in first
First in the first outer pin the inner 711 of the outer pin 71 of pin outer end 312 and first weld, in second in the second of pin 32
The second outer pin the inner 721 of the outer pin 72 of pin outer end 322 and second is welded, and forms pin tie point 5.The pin connects
Point 5 is sealed the tight of resin 6 and is encapsulated in radial mode insulation crust 4a inner chamber, draws outside the first outer pin 71 and second
The other end of pin 72 stretches out radial mode insulation crust 4a with equidirectional, realizes and is electrically connected with external circuit.This encapsulation side
Formula makes the connection of interior outer pin very firm.
Pin 32 is cylindrical rigid conductor in pin 31 and second in first, according to actual through-flow, resistance, dielectric strength
Deng electric requirement specific requirement can be carried out to line footpath, the material of conductor.First outer pin 71 and the second outer pin 72 are flexibility
Wire, as shown in Fig. 1 (b), the flexible wire includes the wire 7b and insulating barrier 7a being made up of multiply tinned wird, according to reality
The electric requirements such as through-flow, resistance, dielectric strength can be carried out to the number of share of stock of multi cord, line footpath, material and thickness of insulating layer, material
Specific requirement.As shown in Fig. 1 (C), the insulating barrier 7a of multi cord is in intracavitary in radial insulation shell 4a, and sealing resin 6 will be led
Line 7b, insulating barrier 7a and insulation crust 4a claddings are integral, so that insulation crust 4b, sealing resin 6, outer pin insulating barrier 7a
Between form continuous insulation, in order to ensure that wire 7b is not exposed in external environment condition, it is ensured that tie point it is reliable
The stability of property and interior outer pin electric property.
Embodiment 2
As shown in Fig. 2 the present embodiment and the difference of embodiment 1 are, insulating barrier 7a is introduced into radial insulation shell 4a,
But it is concordant with radial insulation shell 4a opening, remaining structure is consistent with embodiment 1.This can not mainly for solving insulating barrier
It is inserted into the situation of radial insulation shell 4a inner chamber.
Embodiment 3
As shown in figure 3, the present embodiment and the difference of embodiment 1 are, the connected mode of interior pin and outer pin is riveting,
And riveting terminal 8 is formed, it rivets terminal 8 and is sealed the tight of resin 6 and is encapsulated in the inner chamber of insulation crust, remaining knot
Structure is consistent with embodiment 1.
Embodiment 4
As shown in figure 4, the present embodiment and the difference of embodiment 1 are, and in two pins of Thermal Cutoffs, a pin
The mode of embodiment 1 is used to be welded for pin 31 in first with flexible first outer pin 71, another pin is rigid pin 9,
One end of the rigid pin 9 is connected with fusible alloy silk, and the other end directly stretches out radial mode insulation crust 4a.The present embodiment can expire
The special wiring construction of foot.
Embodiment 5
As shown in Fig. 5 (A) and figure (5) B, the present embodiment and the difference of embodiment 1 are, including are sheet rigid conductor
First in pin 102 in pin 101 and second, and according to electric requirement and encapsulation such as actual through-flow, resistance, dielectric strengths
It is required that specific requirement can be carried out to the size, material, shape of rigid conductor, remaining structure is consistent with embodiment 1.Fig. 5 (C) is illustrated
The three-view diagram of pin in the sheet；
Embodiment 6
As shown in fig. 6, the present embodiment and the difference of embodiment 5 are, sheet is connected in parallel in using 2 fusible alloy silks
First in pin 101 and second pin 102 mode.It so can further reduce small product size, improve through-flow performance.
Embodiment 7
As shown in Fig. 7 (A) and Fig. 7 (B), a kind of alloy-type temperature fuse includes fusible alloy silk 2, fluxing disconnected agent 1, axle
Pin 32, the first outer pin 71 and the second outer pin 72 in pin 31, second into type insulation crust 4b, first.Draw in first
Pin the inner 311 is welded with fusible alloy silk first end 21 in the first of pin 31, and pin is inner in the second of pin 32 in second
321 weld with the second end 22 of fusible alloy silk.Pin 32 is in axialmode insulation crust 4b in pin 31 and second in first
Interior intracavitary.The first outer pin the inner 711 of the outer pin 71 of pin outer end 312 and first is welded in the first of pin 31 in first,
The second outer pin the inner 721 of the outer pin 72 of pin outer end 322 and second is welded in the second of pin 32 in second, and is formed and drawn
Pin tie point 5.The pin tie point 5 is sealed the tight of resin 6 and is encapsulated in axialmode insulation crust 4b inner chamber, the
The other end of one outer pin 71 and the second outer pin 72 stretches out radial mode insulation crust 4a in opposite directions, real with external circuit
Now it is electrically connected.This packaged type makes the connection of interior outer pin very firm.
Pin 32 is cylindrical rigid conductor in pin 31 and second in first, according to actual through-flow, resistance, dielectric strength
Deng electric requirement specific requirement can be carried out to line footpath, the material of conductor.First outer pin 71 and the second outer pin 72 are flexibility
Wire, as shown in Fig. 7 (B), the flexible wire includes the wire 7b and insulating barrier 7a being made up of multiply tinned wird, according to reality
The electric requirements such as through-flow, resistance, dielectric strength can be carried out to the number of share of stock of multi cord, line footpath, material and thickness of insulating layer, material
Specific requirement.As shown in Fig. 1 (C), insulating barrier 7a is in intracavitary in axial dielectric shell 4b, seals resin 6 by wire 7b, insulation
Layer 7a and insulation crust 4b claddings are integral, so that being formed between insulation crust 4b, sealing resin 6, outer pin insulating barrier 7a
Continuous insulation, in order to ensure that wire 7b is not exposed in external environment condition, it is ensured that the reliability of tie point and inside and outside
The stability of pin electric property.
Embodiment 8
As shown in figure 8, the present embodiment and the difference of embodiment 7 are, and in two pins of Thermal Cutoffs, a pin
It is same as Example 7, welded by the outer pin 71 of pin 31 and first in first, another pin does not include flexible outer pin, is
Rigid pin, its one end are connected with fusible alloy silk, and the other end directly stretches out axialmode insulation crust 4b.The present embodiment can meet
Special wiring construction.
Above-described embodiment is the specific descriptions carried out to the utility model, and simply the utility model is carried out furtherly
It is bright, it is impossible to be interpreted as the restriction to scope of protection of the utility model, those skilled in the art is according in above-mentioned utility model
Appearance is made some nonessential modifications and adaptations and each fallen within the scope of protection of the utility model.
Claims (13)
1. a kind of alloy-type temperature fuse, it is characterised in that the Thermal Cutoffs includes fusible alloy silk and at least one
Pin is combined, the combination pin includes pin and flexible outer pin in the rigidity of interconnection；Pin is set in the rigidity
In the inner chamber of insulation crust, pin one end is connected with fusible alloy silk in the rigidity, the other end and the one of flexible outer pin
End is connected to pin tie point, and the pin tie point is arranged in the inner chamber of the insulation crust, and is consolidated by insulation sealed piece
Fixed encapsulating.
2. alloy-type temperature fuse according to claim 1, it is characterised in that the Thermal Cutoffs includes two groups
Close pin.
3. alloy-type temperature fuse according to claim 1 or 2, it is characterised in that the Thermal Cutoffs is with relative
Direction stretch out pin.
4. alloy-type temperature fuse according to claim 1 or 2, it is characterised in that the Thermal Cutoffs is with identical
Direction stretch out pin.
5. alloy-type temperature fuse according to claim 1 or 2, it is characterised in that pin is cylinder in the rigidity
One or more combinations in shape, tetrahedroid and sheet.
6. alloy-type temperature fuse according to claim 1 or 2, it is characterised in that the flexible outer pin with it is described
Pin is welded or riveted in rigidity.
7. alloy-type temperature fuse according to claim 1 or 2, it is characterised in that the flexible outer pin is naked
Wire or the wire for being coated with insulating barrier.
8. alloy-type temperature fuse according to claim 7, it is characterised in that the insulating barrier is inserted outside the insulation
The interior intracavitary of shell.
9. alloy-type temperature fuse according to claim 7, it is characterised in that the insulating barrier is not inserted into the insulation
The interior intracavitary of shell, is flushed with the opening of the insulation crust.
10. alloy-type temperature fuse according to claim 7, it is characterised in that the wire is by multiply tin-coated copper
Multi cord that any of line, multiply CP wire, multiply silver-coated copper wire or strand copper wire stranded bundle forms or
Litzendraht wire.
11. alloy-type temperature fuse according to claim 1 or 2, it is characterised in that the fusible alloy silk is single
Or more parallel connections.
12. alloy-type temperature fuse according to claim 1 or 2, it is characterised in that it is described insulation sealed piece with it is described
Insulation crust, the pin tie point are in close contact, and are formed the entirety of sealing, are made the pin tie point and external insulation.
13. alloy-type temperature fuse according to claim 1 or 2, it is characterised in that the insulation sealed piece is ceramics
Sealed piece or plastic closures part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720955967.4U CN207097772U (en) | 2017-08-02 | 2017-08-02 | Alloy-type temperature fuse |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720955967.4U CN207097772U (en) | 2017-08-02 | 2017-08-02 | Alloy-type temperature fuse |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207097772U true CN207097772U (en) | 2018-03-13 |
Family
ID=61543687
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720955967.4U Active CN207097772U (en) | 2017-08-02 | 2017-08-02 | Alloy-type temperature fuse |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207097772U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110544555A (en) * | 2019-09-05 | 2019-12-06 | 上海肃菲电子科技有限公司 | Insulated wire and manufacturing method thereof |
| KR20210102973A (en) * | 2019-03-20 | 2021-08-20 | 샤먼 세트 일렉트로닉스 컴퍼니 리미티드 | thermal shut-off device |
| US11574785B2 (en) * | 2019-03-20 | 2023-02-07 | Xiamen Set Electronics Co., Ltd. | Thermal cutoff |
-
2017
- 2017-08-02 CN CN201720955967.4U patent/CN207097772U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20210102973A (en) * | 2019-03-20 | 2021-08-20 | 샤먼 세트 일렉트로닉스 컴퍼니 리미티드 | thermal shut-off device |
| EP3910660A4 (en) * | 2019-03-20 | 2022-03-23 | Xiamen Set Electronics Co., Ltd | Thermal cutoff |
| US11574787B2 (en) | 2019-03-20 | 2023-02-07 | Xiamen Set Electronics Co., Ltd | Thermal cutoff |
| US11574785B2 (en) * | 2019-03-20 | 2023-02-07 | Xiamen Set Electronics Co., Ltd. | Thermal cutoff |
| KR102596895B1 (en) * | 2019-03-20 | 2023-10-31 | 샤먼 세트 일렉트로닉스 컴퍼니 리미티드 | heat shield |
| CN110544555A (en) * | 2019-09-05 | 2019-12-06 | 上海肃菲电子科技有限公司 | Insulated wire and manufacturing method thereof |
| CN110544555B (en) * | 2019-09-05 | 2024-05-28 | 上海肃菲电子科技有限公司 | Insulated wire and manufacturing method thereof |
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