CN207320003U - A kind of disposable thermal protector - Google Patents
A kind of disposable thermal protector Download PDFInfo
- Publication number
- CN207320003U CN207320003U CN201721211724.6U CN201721211724U CN207320003U CN 207320003 U CN207320003 U CN 207320003U CN 201721211724 U CN201721211724 U CN 201721211724U CN 207320003 U CN207320003 U CN 207320003U
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- China
- Prior art keywords
- movable contact
- bimetal leaf
- contact spring
- base plate
- concave surface
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Abstract
The utility model discloses a kind of disposable thermal protector, base plate is equipped with housing, the one end of one end of base plate successively with bimetal leaf and movable contact spring is fixed, the length of movable contact spring is more than the length of bimetal leaf, the bimetal leaf on movable contact spring with being separately formed the bimetal leaf concave surface and movable contact spring concave surface arched upward on oriented, the other end of bimetal leaf is vacantly set, base plate is equipped with arches upward and is close to the round platform of bimetal leaf concave surface upwards, the other end of movable contact spring is equipped with moving contact, moving contact on the movable contact spring is abutted with the static contact being arranged on stationary contact bar, movable contact spring is all connected with lead-out wire with static contact.The disposable thermal protector that it efficiently solves the prior art cannot verify break-off signal value one by one in process of production, and there are actual switch-off temperature and theoretical value deviation are larger, it is impossible to which the problem of accurately being protected to equipment, has very high practical value.
Description
Technical field
The utility model is related to a kind of thermal protector technical field, more particularly to it is a kind of used in motor or electric appliance it is non-
Automatically reset disposable thermal protector.
Background technology
The disposable thermal protector of the prior art, is mainly realized by thermal fuse-link.It is mainly disconnected by housing, hot melt
Body, sealing compound and extraction wire etc. form.When temperature rises to design temperature, fusing occurs for thermal fuse-link so as to cut off electricity
Road.The shortcomings that this disposable thermal protector is the break-off signal that cannot verify each thermal protector one by one in process of production
Value, temperature and theoretical value deviation of each thermal protector in actual switch-off are larger, it is impossible to which equipment is accurately protected.It is open
Day disclose a kind of thermal cut-out for electrical equipment on March 1st, 2017, the patent document of Publication No. CN205992518U
Device, the breaker have：The connecting element that can be soldered on the electrical equipment joint face, the connecting element have flat
Face section, the planar section can be soldered on the electrical equipment, and connecting element is also and the extra segment that is connected with planar section of tool；One
A electric wire double-layered quilt is inserted into the electrical connection established on the extra segment with the electrical equipment；When the electrical equipment overheats
When, the solder flux below the planar section softens, and the electrically wire clamp promotes the connecting element to move so that interrupt it is described electrically
The electrical contact of element and connecting element.But this thermal protector is softened using solder flux to be promoted connecting element mobile and disconnects electricity
Road, its shortcoming are identical with thermal fuse-link.Publication date is May 11, the patent document of Publication No. CN201829431U in 2011
A kind of bipolar disconnection non-self-reset thermal circuit breaker is disclosed, left and right slotting spring terminal is by clamp spring clamping, left and right slotting spring terminal difference
Have left and right of the connection of a static contact riveting with riveting, two square wire connection terminals respectively with being connected left plate, right panel is riveted on base
On, the movable contact spring that two rivetings have moving contact is fixed on base, and mechanism rack assembles in the base, equipped with extension on mechanism rack
Plate, hanging plate and impeller riveting, on two movable contact springs, the mechanism rack other end is equipped with seesaw for impeller lower end, on seesaw
Restoring lever is welded with, equipped with piece is lifted up between seesaw and hanging plate, compression spring II, the centre bore dress pressure of felt pad are housed on the boss of base
Spring I, micrometer adjusting screw is filled in felt pad, resets push rod, the temperature module one end is in compression spring I, the other end is mounted in adjusting screw
It is interior.It will ensure that synchronous disconnect the two poles of the earth contact, it could manually reset, with the protection equipment that achievees the purpose that to cut off the power.But
This thermal protector volume is big, and complicated, production cost is very high, is not suitable for the disposable disconnection of electrical equipment（It is not automatic
Reset）The Thermal protection of form.
Utility model content
The utility model cannot verify disconnection one by one in process of production to solve the disposable thermal protector of the prior art
Temperature value, there are actual switch-off temperature and theoretical value deviation are larger, it is impossible to the problem of accurately being protected to electrical equipment, there is provided
One kind can verify break-off signal in advance, the disposable thermal protector accurately protected to electrical equipment.
The utility model is that concrete technical scheme is used by reaching above-mentioned technical purpose：Rectangle including flat structure
Housing, housing is interior to be equipped with base plate, and base plate is equipped with bimetal leaf, and the top of bimetal leaf sets movable contact spring, movable contact spring
Length is more than the length of bimetal leaf, and the bimetal leaf on movable contact spring with being separately formed the bimetal leaf concave surface arched upward on oriented
And movable contact spring concave surface, one end of bimetal leaf are fixedly connected with one end of movable contact spring with one end of base plate, bimetal leaf it is another
One end is vacantly set, and base plate is equipped with the round platform to arch upward upwards, and the round platform is located at below bimetal leaf concave surface and is close to double
Sheet metal concave surface, the other end of movable contact spring are equipped with moving contact, the stationary contact bar of insulation system are equipped with above the other end of base plate,
Stationary contact bar is equipped with static contact, and the moving contact on the movable contact spring is abutted with static contact, and movable contact spring is all connected with drawing with static contact
Outlet.Base plate in the utility model housing is equipped with bimetal leaf and movable contact spring, and bimetal leaf with setting respectively on movable contact spring
The bimetal leaf concave surface and movable contact spring concave surface arched upward on oriented, the movable contact spring other end are equipped with the moving contact abutted with static contact, when
When the temperature of thermal protector present position is increased to predetermined temperature protection value, the concave upright upset of bimetal leaf, promotes dynamic touch
The concave upright upset of piece, moving contact at the abutting of static contact with separating, and circuit disconnects, to protect corresponding electrical equipment to be unlikely to
Cross cause thermal damage.The Wen Duxiajiang of corresponding electric appliance equipment after circuit disconnects, drops to certain at a temperature of thermal protector present position
During numerical value, bimetal leaf concave surface, which downwardly turns over, returns to initial position, and movable contact spring concave surface no external force act on the premise of after
The state of being flipped up is held in continuation of insurance, i.e. moving contact continues to keep discrete state not automatically reset with static contact, so as to fulfill once
The Thermal protection of property.Since the bimetal leaf of the utility model can overturn temperature beforehand through Experimental Calibration, this practicality is new
The actual switch-off temperature and nominal value deviation very little of type thermal protector, therefore accurate protection, solution can be provided electrical equipment
The disposable thermal protector for the prior art of having determined cannot verify break-off signal value one by one in process of production, and there are actual switch-off temperature
Degree and theoretical value deviation are larger, it is impossible to the problem of accurately being protected to equipment.And the base between fixed plate and stationary contact bar
The round platform to arch upward upwards is set on seat board, it can be ensured that the surrounding of bimetal leaf concave surface is upward during bimetal leaf concave upright upset
Jack up, i.e., round platform limits the minimum point height of bimetal leaf concave surface, so that it is guaranteed that bimetal leaf concave surface promotes movable contact spring concave surface
It is flipped up.On the other hand, the disposable thermal protector thickness of the utility model is in addition to shell, only by pedestal plate thickness,
The thickness of stationary contact bar and static contact, moving contact thickness and moving contact break distance are formed, and are belonged to ultrathin structure, are conducive to one
Setting of the secondary property thermal protector in electrical equipment.
Preferably, housing narrow side side is equipped with opening, the connecting pin of the bimetal leaf and movable contact spring and base plate is set
The side away from opening in housing is put, the stationary contact bar and lead-out wire are arranged on the opening side of housing, the opening of housing
Place is equipped with sealing compound.
Preferably, the base plate below stationary contact bar is close to housing setting, base plate and bimetal leaf and movable contact spring
Connecting pin is folded upward at the fixed plate formed with higher than base plate, and fixed plate is equipped with 2 riveted holes, the bimetal leaf and dynamic
Contact is riveted with fixed plate.
Preferably, the movable contact spring above bimetal leaf free end is equipped with downwardly convex bulge, the bulge
Between the moving contact of movable contact spring and movable contact spring concave surface, when bimetal leaf concave surface is overturn, bimetal leaf is pushed up by bulge
Dynamic movable contact spring concave surface upset, the moving contact of movable contact spring are separated with static contact.Bulge corresponds to the outer rim of bimetal leaf concave surface, double gold
When belonging to the upset of piece concave surface, the outer rim of bimetal leaf concave surface abuts with bulge and pushes up movable contact spring concave surface by bulge and overturns,
It can so make the upset of movable contact spring concave surface more smooth rapid.
Preferably, housing is high-temperature resistance plastice material, the base plate is metallic plate, and the static contact is embedding by being molded
It is located on stationary contact bar, the movable contact spring connects lead-out wire by base plate.Here high-temperature resistance plastice refers to protect in heat
The plastic material worked normally for a long time below shield device break-off signal.
Alternatively, housing is metal material material, and the base plate is metallic plate, the housing overcoat
Equipped with the insulation sleeve for coating the housing, the static contact is embedded on stationary contact bar by injection, and the movable contact spring passes through base
Seat board connects lead-out wire.
Preferably, moving contact is an integral molding structure with movable contact spring, the moving contact is downwardly convex sphere, is moved
Contact is equipped with silver-coated layer.Moving contact can also be the silver contact being riveted on movable contact spring.
Preferably, bimetal leaf concave surface and movable contact spring concave surface are circular or butterfly, close to fixing end two on bimetal leaf
Side is equipped with recess.Recess plays the role of isolating bimetal leaf concave surface and fixing end to a certain extent, reduces bimetal leaf and consolidates
Influence of the fixed end to bimetal leaf concave surface, is conducive to the upset of bimetal leaf concave surface.
The beneficial effects of the utility model are：The disposable thermal protector that it efficiently solves the prior art was producing
Break-off signal value cannot be verified in journey one by one, there are actual switch-off temperature and theoretical value deviation are larger, it is impossible to which essence is carried out to equipment
The problem of ensuring shield, the thermal protector of the utility model can verify break-off signal in advance, and accurate temperature is carried out to electrical equipment
Protection, has very high practical value.
Brief description of the drawings
Fig. 1 is a kind of structure sectional view of the utility model；
Fig. 2 is a kind of structure sectional view after the concave upright upset of the utility model bimetal leaf；
Fig. 3 is a kind of structure sectional view after the utility model bimetal leaf concave surface resets；
Fig. 4 is a kind of internal dimensional structure diagram of the utility model；
Fig. 5 is a kind of internal structure top view of the utility model；
Fig. 6 is a kind of dimensional structure diagram of the utility model base plate；
Fig. 7 is a kind of structure top view of the utility model bimetal leaf.
In figure：1. housing, 2. base plates, 3. bimetal leafs, 4. movable contact springs, 5. bimetal leaf concave surfaces, 6. movable contact springs are recessed
Face, 7. moving contacts, 8. stationary contact bars, 9. static contacts, 10. lead-out wires, 11. sealing compounds, 12. fixed plates, 13. riveted holes, 14. circles
Platform, 15. bulges, 16. recesses.
Embodiment
The embodiment of technical solutions of the utility model is made further below by way of examples and with reference to the accompanying drawings
Explanation.
Embodiment 1
In embodiment 1 as shown in Figure 1, a kind of disposable thermal protector, includes the shell of flat structure rectangular shape
Body 1, the housing are high-temperature resistance plastice material, and a narrow side side of housing is equipped with opening, base plate 2 is equipped with housing（See Fig. 6）,
Base plate is metallic plate, and the base plate of the side away from opening is folded upward at the fixed plate 12 formed with higher than base plate, fixed
Plate is equipped with 2 riveted holes 13, and fixed plate is equipped with bimetal leaf 3（See Fig. 7）, the top of bimetal leaf sets movable contact spring 4（See
Fig. 4 Fig. 5）, one end of the bimetal leaf and movable contact spring is riveted in fixed plate, and the length of movable contact spring is more than the length of bimetal leaf
Degree, the bimetal leaf on movable contact spring with being separately formed the bimetal leaf concave surface 5 and movable contact spring concave surface 6 arched upward on oriented, double gold
Belong to piece concave surface and movable contact spring concave surface for circle, recess 16 is equipped with close to fixing end both sides on bimetal leaf（See Fig. 7）.
The other end of bimetal leaf is vacantly set, and the movable contact spring above bimetal leaf free end is equipped with downwardly convex
Bulge 15, the bulge is located between moving contact and the movable contact spring concave surface of movable contact spring, and the other end of movable contact spring is equipped with moving contact
7, the moving contact and movable contact spring of the present embodiment are an integral molding structure, and the moving contact is downwardly convex sphere, moving contact
It is equipped with silver-coated layer.Base plate is equipped with the plastics stationary contact bar 8 of insulation system, stationary contact bar close to the top of shell nozzle one end
The base plate of lower section is close to housing and is set, and static contact 9 is embedded with by being molded on stationary contact bar, the moving contact on the movable contact spring
Abutted with static contact, static contact connection lead-out wire 10, movable contact spring connects lead-out wire by base plate, close to housing in the present embodiment
Lead-out wire connecting pin is equipped with the static contact and base plate of opening（See Fig. 5）, lead-out wire is arranged on the opening side of housing,
The opening of housing is equipped with sealing compound 11.
Base plate between fixed plate and stationary contact bar is equipped with the round platform 14 to arch upward upwards, and the round platform is located at bimetallic
Below piece concave surface and it is close to bimetal leaf concave surface.When bimetal leaf concave surface is overturn, bimetal leaf pushes up dynamic touch by bulge
Piece concave surface is overturn, and the moving contact of movable contact spring is separated with static contact.
Embodiment 2
The housing of embodiment 2 uses metal material material, and the insulation sleeve for coating the housing, bimetallic are arranged with outside housing
Piece concave surface and movable contact spring concave surface are butterfly, remaining and embodiment 1 are identical.
Base plate in the utility model housing is equipped with bimetal leaf and movable contact spring, and bimetal leaf on movable contact spring with distinguishing
Equipped with the bimetal leaf concave surface and movable contact spring concave surface arched upward upwards, the movable contact spring other end is equipped with the moving contact abutted with static contact,
In an initial condition, moving contact is in static contact and abuts state（See Fig. 1）, when the temperature of thermal protector present position is increased to
During predetermined temperature protection value, the concave upright upset of bimetal leaf, promotes the concave upright upset of movable contact spring, moving contact and static contact
Abutting at separate, circuit disconnect, to protect corresponding electrical equipment to be unlikely to cause thermal damage（See Fig. 2）.Phase after circuit disconnects
Answer the Wen Duxiajiang of electrical equipment, when dropping to certain numerical value at a temperature of thermal protector present position, bimetal leaf concave surface to
Lower upset returns to initial position, and the rollover states that keep up are continued in movable contact spring concave surface on the premise of no external force acts on（See
Fig. 3）, i.e. moving contact continues to keep discrete state not automatically reset with static contact, so as to fulfill disposable Thermal protection.Due to
The bimetal leaf of the utility model can overturn temperature, therefore, the reality of the utility model thermal protector beforehand through Experimental Calibration
Border break-off signal and nominal value deviation very little, therefore accurate protection can be provided electrical equipment, solve the prior art
Disposable thermal protector cannot verify break-off signal value one by one in process of production, and there are actual switch-off temperature and theoretical value deviation
It is larger, it is impossible to the problem of accurately being protected to equipment.
In addition to the implementation, in the scope disclosed in claims and specification in the utility model, this practicality
New technical characteristic or technical data can be reselected and combined, so as to form new embodiment, these are all these
Field technology personnel need not carry out that creative work is i.e. achievable, therefore the implementation that these the utility model are not described in
Example also should be regarded as specific embodiment of the utility model and within the scope of protection of the utility model.
Claims (8)
1. a kind of disposable thermal protector, includes the rectangular housing of flat structure（1）, it is characterized in that：Base plate is equipped with housing
（2）, base plate is equipped with bimetal leaf（3）, the top of bimetal leaf sets movable contact spring（4）, the length of movable contact spring is more than double gold
Belong to the length of piece, the bimetal leaf on movable contact spring with being separately formed the bimetal leaf concave surface arched upward on oriented（5）And movable contact spring
Concave surface（6）, one end of bimetal leaf is fixedly connected with one end of movable contact spring with one end of base plate, and the other end of bimetal leaf hangs
Sky is set, and base plate is equipped with the round platform to arch upward upwards（14）, the round platform is located at below bimetal leaf concave surface and is close to double gold
Belong to piece concave surface, the other end of movable contact spring is equipped with moving contact（7）, the other end top of base plate is equipped with the stationary contact bar of insulation system
（8）, stationary contact bar is equipped with static contact（9）, the moving contact on the movable contact spring abuts with static contact, and movable contact spring is equal with static contact
Connect lead-out wire（10）.
2. disposable thermal protector according to claim 1, it is characterised in that the housing narrow side side is equipped with opening,
The connecting pin of the bimetal leaf and movable contact spring and base plate be arranged in housing away from opening side, the stationary contact bar and
Lead-out wire is arranged on the opening side of housing, and the opening of housing is equipped with sealing compound（11）.
3. disposable thermal protector according to claim 1, it is characterised in that the base plate below stationary contact bar is close to shell
Body is set, and the connecting pin of base plate and bimetal leaf and movable contact spring is folded upward at the fixed plate formed with higher than base plate（12）,
Fixed plate is equipped with 2 riveted holes（13）, the bimetal leaf and movable contact spring are riveted with fixed plate.
4. disposable thermal protector according to claim 1, it is characterised in that dynamic above bimetal leaf free end
Contact is equipped with downwardly convex bulge（15）, the bulge is located between moving contact and the movable contact spring concave surface of movable contact spring, double gold
When belonging to the upset of piece concave surface, bimetal leaf pushes up movable contact spring concave surface by bulge and overturns, the moving contact and static contact of movable contact spring
Separation.
5. disposable thermal protector according to claim 1, it is characterised in that the housing is high-temperature resistance plastice material,
The base plate is metallic plate, and the static contact is embedded on stationary contact bar by injection, and the movable contact spring is connected by base plate
Connect lead-out wire.
6. disposable thermal protector according to claim 1, it is characterised in that the housing is metal material material, institute
It is metallic plate to state base plate, and the insulation sleeve for coating the housing is arranged with outside the housing, and the static contact is embedded by injection
On stationary contact bar, the movable contact spring connects lead-out wire by base plate.
7. disposable thermal protector according to claim 1, it is characterised in that the moving contact is integrated with movable contact spring
Molding structure, the moving contact are downwardly convex sphere, and moving contact is equipped with silver-coated layer.
8. according to claim 1-7 any one of them disposable thermal protectors, it is characterised in that bimetal leaf concave surface and dynamic touch
Piece concave surface is circular or butterfly, and recess is equipped with close to fixing end both sides on bimetal leaf（16）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721211724.6U CN207320003U (en) | 2017-09-19 | 2017-09-19 | A kind of disposable thermal protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721211724.6U CN207320003U (en) | 2017-09-19 | 2017-09-19 | A kind of disposable thermal protector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207320003U true CN207320003U (en) | 2018-05-04 |
Family
ID=62383427
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721211724.6U Active CN207320003U (en) | 2017-09-19 | 2017-09-19 | A kind of disposable thermal protector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207320003U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111916307A (en) * | 2019-05-09 | 2020-11-10 | 马赛尔·P·霍夫萨埃斯 | Temperature control switch |
-
2017
- 2017-09-19 CN CN201721211724.6U patent/CN207320003U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111916307A (en) * | 2019-05-09 | 2020-11-10 | 马赛尔·P·霍夫萨埃斯 | Temperature control switch |
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