CN203588936U - Heat protector - Google Patents
Heat protector Download PDFInfo
- Publication number
- CN203588936U CN203588936U CN201320710621.XU CN201320710621U CN203588936U CN 203588936 U CN203588936 U CN 203588936U CN 201320710621 U CN201320710621 U CN 201320710621U CN 203588936 U CN203588936 U CN 203588936U
- Authority
- CN
- China
- Prior art keywords
- contact
- arc
- base plate
- contact bridge
- bimetal leaf
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 230000001012 protector Effects 0.000 title claims abstract description 21
- 230000003068 static effect Effects 0.000 claims abstract description 29
- 238000003466 welding Methods 0.000 claims abstract description 15
- 239000012212 insulator Substances 0.000 claims description 18
- 238000010276 construction Methods 0.000 claims description 12
- 239000004593 Epoxy Substances 0.000 claims description 3
- 239000003292 glue Substances 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 238000009413 insulation Methods 0.000 abstract description 4
- 239000002184 metal Substances 0.000 abstract 5
- 238000009434 installation Methods 0.000 abstract 4
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 abstract 4
- 238000005452 bending Methods 0.000 abstract 2
- 230000000694 effects Effects 0.000 description 7
- 238000000034 method Methods 0.000 description 4
- 238000000926 separation method Methods 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 2
- 108091027981 Response element Proteins 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
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- Thermally Actuated Switches (AREA)
Abstract
The utility model relates to a heat protector. The heat protector comprises a housing. A bottom plate, a contact bridge, an arc double metal sheet and an insulation base are disposed inside the housing. The bottom plate comprises a welding part, a bending part and an installation part. The insulation base provided with a static contact is disposed at the installation part of the bottom plate. One end of the contact bridge is fixedly connected with the welding part. One end of the arc double metal sheet is disposed between the contact bridge and the welding part. The middle part of the arc double metal sheet is supported by the bending part. The other end of the arc double metal sheet is disposed above the installation part. The other end of the contact bridge is provided with a moving contact that is contacted with one end of the static contact. The other end of the static contact is connected with a static contact lead wire. The installation part is connected with a bottom plate lead wire. The static contact lead wire and the bottom plate lead wire extend outside the housing. The other end of the contact bridge, which is near the moving contact, is provided with a protrusion that is disposed above the other end of the arc double metal sheet. The insulation base is provided with an arc gap that is near the other end of the contact bridge. The heat protector is high in reliability and safety, and reinforces temperature stability.
Description
Technical field
The utility model is specifically related to a kind of thermal protector for electrical equipment overtemperature protection.
Background technology
Existing thermal protector, be generally to various motors, power consumption equipment in overcurrent with when overheated, thereby cutoff circuit plays a protective role; When motor or power consumption equipment overcurrent with when overheated, the bimetal leaf of thermal protector, under heating effect of current effect, bounces its free end up and down, thereby makes moving contact and static contact contact separation, cutoff circuit.But the structure of existing thermal protector has certain shortcoming, the first, when overcurrent and overheated cutoff circuit, the spacing after the moving contact of thermal protector is separation with static contact is too small, and the situation of meeting flashing sparking, makes reliability low; Second, because the rear end of the contact bridge of thermal protector is near the front end of insulator foot, if both spacing are too small or offset, in motor or power consumption equipment overcurrent with when overheated, the free end of bimetal leaf is difficult for spring up and down, moving contact is just difficult for being separated with static contact like this, and cutoff circuit in time, can damage motor or power consumption equipment; The thermal protector of this spline structure, not only poor stability, and also fail safe is also low, has potential safety hazard.
Summary of the invention
The purpose of this utility model is: one is provided, and not only reliability is high, and safe, and can strengthen the thermal protector of temperature stability, to overcome the deficiencies in the prior art.
In order to achieve the above object, the technical solution of the utility model: a kind of thermal protector, comprise shell, in described shell, base plate is housed, contact bridge, arc bimetal leaf and insulator foot, described base plate comprises the welding section of one each other, folding section and construction section, insulator foot is contained on the construction section of base plate, and static contact is also housed on insulator foot, one end of described contact bridge is fixedly connected with the welding section of base plate, and one end of described arc bimetal leaf is located between contact bridge and the welding section of base plate, the middle part of arc bimetal leaf is supported in the folding section of base plate, the other end of arc bimetal leaf is free end and is positioned at construction section top, the other end of described contact bridge is provided with moving contact, and moving contact contacts with one end of described static contact, the other end of static contact is connected with static contact wire, the construction section of described base plate is connected with base plate wire, static contact wire and base plate wire stretch out outside shell, its special innovative point is:
The inner place of close moving contact of a, the described contact bridge other end is provided with projection, and projection is positioned at the other end top of arc bimetal leaf;
B, described insulator foot are provided with arc notch, and arc notch is near the other end of contact bridge.
In technique scheme, there is positioning boss one end of described contact bridge, and there is location hole one end of arc bimetal leaf, and positioning boss is inlaid in location hole, and the positioning boss of contact bridge is fixedly connected with the welding section of base plate.
In technique scheme, there is epoxy sealing glue in the opening part of described shell and the outside near insulator foot.
In technique scheme, the spacing between the projection of described contact bridge and the other end of arc bimetal leaf is controlled within the scope of 0.8～1.2mm.
In technique scheme, the radial depth of described arc notch is 0.6～0.8 mm, and arc radius is 2～2.5 mm.
The good effect that the utility model has is: due to the other end of described contact bridge and near moving contact, be provided with projection, and projection is positioned at the other end top of arc bimetal leaf; Therefore, when overcurrent and overheated cutoff circuit, the projection that the free end of arc bimetal leaf will head on contact bridge moves upward, increased like this moving contact of the thermal protector spacing after separation with static contact, avoid moving contact and static contact in overcurrent and situation that can flashing sparking when overheated, made reliability high; Again because described insulator foot is provided with arc notch; and arc notch is near the other end of contact bridge; so just increased the spacing of insulator foot and contact bridge; therefore,, if in motor or power consumption equipment overcurrent with when overheated, be convenient to moving contact and static contact is separated; and timely cutoff circuit; motor or power consumption equipment are implemented to protection, and the utility model is good stability not only, and fail safe is also high.
Accompanying drawing explanation
Fig. 1 is a kind of concrete structural representation of the utility model;
Fig. 2 is the vertical view of Fig. 1.
Embodiment
Below in conjunction with accompanying drawing and the embodiment that provides, the utility model is further described, but is not limited to this.
As Fig. 1, shown in 2, a kind of thermal protector, comprise shell 1, in described shell 1, base plate 2 is housed, contact bridge 3, arc bimetal leaf 4 and insulator foot 6, described base plate 2 comprises the welding section 2-1 of one each other, folding section 2-2 and construction section 2-3, insulator foot 6 is contained on the construction section 2-3 of base plate 2, and static contact 5 is also housed on insulator foot 6, one end of described contact bridge 3 is fixedly connected with the welding section 2-1 of base plate 2, and one end of described arc bimetal leaf 4 is located between contact bridge 3 and the welding section 2-1 of base plate 2, the middle part of arc bimetal leaf 4 is supported on the folding section 2-2 of base plate 2, the other end of arc bimetal leaf 4 is free end and is positioned at construction section 2-3 top, the other end of described contact bridge 3 is provided with moving contact 7, and moving contact 7 contacts with one end of described static contact 5, the other end of static contact 5 is connected with static contact wire 8, the construction section 2-3 of described base plate 2 is connected with base plate wire 9, static contact wire 8 and base plate wire 9 stretch out outside shell 1,
The inner place of close moving contact 7 of described contact bridge 3 other ends is provided with protruding 3-1, and protruding 3-1 is positioned at the other end top of arc bimetal leaf 4;
Described insulator foot 6 is provided with arc notch 6-1, and arc notch 6-1 is near the other end of contact bridge 3.
As shown in Figure 1, 2, in order to guarantee the fastness between base plate 2, contact bridge 3 and arc bimetal leaf 4 threes, there is positioning boss 3-2 one end of described contact bridge 3, there is location hole 4-1 one end of arc bimetal leaf 4, positioning boss 3-2 is inlaid in location hole 4-1, and the positioning boss 3-2 of contact bridge 3 is fixedly connected with the welding section 2-1 of base plate 2.
As shown in Figure 1, 2, in order to improve insulation effect of the present utility model, there is epoxy sealing glue 10 in the opening part of described shell 1 and the outside near insulator foot 6.
As shown in Figure 1, 2, the spacing between the protruding 3-1 of described contact bridge 3 and the other end of arc bimetal leaf 4 is controlled within the scope of 0.8～1.2mm.
The radial depth of arc notch 6-1 described in the utility model is 0.6～0.8 mm, and arc radius is 2～2.5 mm.
When the utility model is used, static contact wire 8 and base plate wire 9 are connected in the loop of various motors and electrical equipment, when equipment in the course of the work, if while there is operation irregularity or current surge in equipment, be that surrounding ambient temperature is while having reached the temperature value that the utility model sets, described arc bimetal leaf 4 is under the heating effect of current effect of large electric current, spring up and down, and withstand the protruding 3-1 of contact bridge 3, thereby make moving contact 7 and static contact 5 contact separations, and cutoff circuit, thus power consumption equipment is played the effect of overcurrent and overtemperature protection; When the electric current of power consumption equipment recovers normal or surrounding ambient temperature and drops to uniform temperature; arc bimetal leaf 4 of the present utility model is restored to free state; moving contact 7 contacts again with static contact 5, and circuit recovers to connect, thereby power consumption equipment can recover normal work.
Arc bimetal leaf 4 described in the utility model both can be used as responsive to temperature response element, can serve as again current sensitive element, have larger electric current by or during temperature overtemperature, make heat that electric current or increase in temperature produce can be transmitted to bimetal leaf and move rapidly, open circuit; Otherwise, recover rapidly; Thereby guarantee that circuit or equipment are protected effectively; Therefore, the utility model is to have overcurrent and overheated duplicate protection, has greatly effectively protected the normal operation of power consumption equipment and has used safety.
Claims (5)
1. a thermal protector, comprise shell (1), base plate (2) is housed in described shell (1), contact bridge (3), arc bimetal leaf (4) and insulator foot (6), described base plate (2) comprises the welding section of one (2-1) each other, folding section (2-2) and construction section (2-3), insulator foot (6) is contained on the construction section (2-3) of base plate (2), and static contact (5) is also housed on insulator foot (6), one end of described contact bridge (3) is fixedly connected with the welding section (2-1) of base plate (2), and one end of described arc bimetal leaf (4) is located between contact bridge (3) and the welding section (2-1) of base plate (2), the middle part of arc bimetal leaf (4) is supported in the folding section (2-2) of base plate (2), the other end of arc bimetal leaf (4) is free end and is positioned at construction section (2-3) top, the other end of described contact bridge (3) is provided with moving contact (7), and moving contact (7) contacts with one end of described static contact (5), the other end of static contact (5) is connected with static contact wire (8), the construction section (2-3) of described base plate (2) is connected with base plate wire (9), static contact wire (8) and base plate wire (9) stretch out outside shell (1), it is characterized in that:
The inner place of close moving contact (7) of a, described contact bridge (3) other end is provided with projection (3-1), and projection (3-1) is positioned at the other end top of arc bimetal leaf (4);
B, described insulator foot (6) are provided with arc notch (6-1), and arc notch (6-1) is near the other end of contact bridge (3).
2. thermal protector according to claim 1; it is characterized in that: there is positioning boss (3-2) one end of described contact bridge (3); there is location hole (4-1) one end of arc bimetal leaf (4); positioning boss (3-2) is inlaid in location hole (4-1), and the positioning boss (3-2) of contact bridge (3) is fixedly connected with the welding section (2-1) of base plate (2).
3. thermal protector according to claim 1, is characterized in that: there is epoxy sealing glue (10) in the opening part of described shell (1) and the outside near insulator foot (6).
4. thermal protector according to claim 1, is characterized in that: the spacing between the projection (3-1) of described contact bridge (3) and the other end of arc bimetal leaf (4) is controlled within the scope of 0.8～1.2mm.
5. thermal protector according to claim 1, is characterized in that: the radial depth of described arc notch (6-1) is 0.6～0.8 mm, and arc radius is 2～2.5 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320710621.XU CN203588936U (en) | 2013-11-12 | 2013-11-12 | Heat protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320710621.XU CN203588936U (en) | 2013-11-12 | 2013-11-12 | Heat protector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203588936U true CN203588936U (en) | 2014-05-07 |
Family
ID=50586808
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320710621.XU Expired - Lifetime CN203588936U (en) | 2013-11-12 | 2013-11-12 | Heat protector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203588936U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107644781A (en) * | 2017-09-19 | 2018-01-30 | 浙江富风电器有限公司 | A kind of new disposable thermal protector |
| CN108461349A (en) * | 2018-04-17 | 2018-08-28 | 佛山市常宏同力电器有限公司 | Thermal protector and electric appliance |
-
2013
- 2013-11-12 CN CN201320710621.XU patent/CN203588936U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107644781A (en) * | 2017-09-19 | 2018-01-30 | 浙江富风电器有限公司 | A kind of new disposable thermal protector |
| CN108461349A (en) * | 2018-04-17 | 2018-08-28 | 佛山市常宏同力电器有限公司 | Thermal protector and electric appliance |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20161014 Address after: Daitou town of Liyang City Ferry Street 213300 Jiangsu city of Changzhou province 8-2 No. 7 Patentee after: JIANGSU CHANGHONG DIHAO ELECTRICAL EQUIPMENT CO.,LTD. Address before: 213127, Changzhou, Jiangsu Province, north of the town of new North Wei Village Garden (North) 5 Patentee before: CHANGZHOU CHANGHONG TONGLI ELECTRIC APPLIANCE CO.,LTD. |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20171208 Address after: 528311 Foshan, Beijiao Town, Shunde District, Foshan, Guangdong Province, Beijiao community residents committee, No. 1 A, No. A, South East Road, ring Town, ring Town, No. 3 layer B Patentee after: FOSHAN CHANGHONG TONGLI ELECTRIC APPLIANCE CO.,LTD. Address before: Daitou town of Liyang City Ferry Street 213300 Jiangsu city of Changzhou province 8-2 No. 7 Patentee before: JIANGSU CHANGHONG DIHAO ELECTRICAL EQUIPMENT CO.,LTD. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140507 |