CN211629018U - Bimetallic protection device and circuit breaker - Google Patents
Bimetallic protection device and circuit breaker Download PDFInfo
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- CN211629018U CN211629018U CN202020718084.3U CN202020718084U CN211629018U CN 211629018 U CN211629018 U CN 211629018U CN 202020718084 U CN202020718084 U CN 202020718084U CN 211629018 U CN211629018 U CN 211629018U
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- bimetallic strip
- bimetallic
- protection device
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- arm
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Abstract
The utility model provides a two gold protection device and circuit breaker belongs to circuit breaker technical field, and wherein, two gold protection device include: the bimetallic strip is suitable for being arranged in a shell of the electric switch device, one end of the bimetallic strip is a connecting end, the other end of the bimetallic strip is a free end, and the connecting end is suitable for being connected with a static contact of the electric switch device; the supporting elastic sheet is of a bent structure and is provided with a supporting arm and an adjusting arm, the supporting arm is used for being connected in the shell, the adjusting arm is used for being connected with the connecting end of the bimetallic strip, and the distance between the adjusting arm and the supporting arm is suitable for being adjusted through an adjusting screw; the utility model discloses a two golden protection device is connected through supporting shell fragment and casing at the link of bimetallic strip, when carrying out the angular position regulation of bimetallic strip, adjusts through the angle of bending of regulation support shell fragment to under the prerequisite of guaranteeing bimetallic strip conductivity, through the elasticity that improves support shell fragment, the angular position that can make bimetallic strip adjusts more lightly.
Description
Technical Field
The utility model relates to a circuit breaker technical field, concretely relates to two gold protection devices and circuit breaker.
Background
The breaker is a switching device capable of bearing and breaking current under abnormal loop conditions within a specified time, and is provided with a movable contact and a fixed contact which can perform on-off operation inside, wherein the movable contact is driven by an operating mechanism.
In the circuit breaker, the bimetallic strip is used for overload protection through the bimetallic strip protection device, the bimetallic strip protection device is provided with a bimetallic strip which can be deformed by heating, when the overload occurs to the load equipment, the bimetallic strip is heated and deformed towards the direction of the operating mechanism due to the increase of current at the bimetallic strip, and therefore the operating mechanism is driven to disconnect the moving contact and the fixed contact. The bimetallic strip is installed in the casing of circuit breaker, need adjust its position angle to when the overload appears, the bimetallic strip can drive operating device through the deformation realization. Therefore, the bimetallic strip of the bimetallic protection device needs to have good conductivity and good elasticity for adjustment, so as to meet the actual requirement.
However, in practice, in order to satisfy the conductivity of the bimetal, the elasticity of the bimetal is inevitably reduced, so that the adjustment of the bimetal is laborious.
SUMMERY OF THE UTILITY MODEL
Therefore, the to-be-solved technical problem of the utility model lies in overcoming the defect that bimetallic strip of two gold protection device among the prior art is not convenient for adjust to a two gold protection device and have this two gold protection device's circuit breaker is provided.
In order to solve the technical problem, the utility model provides a bimetallic protection device for actuating electric switching device's operating device's execution, include:
the bimetallic strip is suitable for being arranged in a shell of the electric switch device, one end of the bimetallic strip is a connecting end, the other end of the bimetallic strip is a free end, and the connecting end is suitable for being connected with a static contact of the electric switch device;
the supporting elastic sheet is of a bent structure and is provided with a supporting arm used for being connected in the shell and an adjusting arm used for being connected with the connecting end of the bimetallic strip, and the distance between the adjusting arm and the supporting arm is suitable for being adjusted through an adjusting screw.
Preferably, the adjusting arm of the supporting spring plate is provided with an extending plate extending towards one side direction, and the bimetallic strip is connected with the supporting spring plate into a whole through the extending plate.
Preferably, the bimetallic strip and the supporting spring are connected into a whole by welding.
Preferably, the method further comprises the following steps: the adjusting screw is provided with an abutting head which is suitable for abutting against the inner wall of the supporting arm, and the abutting head is of an arc-shaped structure.
Preferably, the inner wall of the supporting arm of the supporting spring plate is provided with a positioning groove corresponding to the abutting head.
Preferably, the adjusting arm of the supporting spring plate is provided with a threaded hole, and the adjusting screw is suitable for penetrating through the adjusting arm and then abutting against the inner wall of the supporting arm.
Preferably, the method further comprises the following steps: and the static contact is connected with the connecting end of the bimetallic strip and is provided with a static contact for contacting with the moving contact.
Preferably, the fixed contact is provided with a positioning plate extending towards the side edge.
Preferably, the fixed contact is provided with a positioning boss, and the fixed contact abuts against one side of the positioning boss. When the static contact is welded with the static contact, the positioning boss can play a role in auxiliary positioning, and the static contact can be welded conveniently.
Preferably, the fixed contact is provided with a deformation section for connecting with the bimetallic strip, and the deformation section is in a bent shape.
Preferably, the thickness of the deformation section is smaller than the average thickness of the static contact.
Preferably, the fixed contact is provided with an arc guide plate extending away from the fixed contact.
Preferably, the fixed contact and the bimetallic strip are connected into a whole by welding.
The utility model also provides a circuit breaker, including any one of the above-mentioned scheme two golden protection device.
The utility model discloses technical scheme has following advantage:
1. the utility model provides a two golden protection device is connected with the casing through supporting the shell fragment at the link of bimetallic strip, when carrying out the angular position regulation of bimetallic strip, adjusts through the angle of bending of regulation support shell fragment to under the prerequisite of guaranteeing bimetallic strip conductivity, through the elasticity that improves support shell fragment, the angular position that can make bimetallic strip adjusts more lightly.
2. The utility model provides a two golden protection device because the support shell fragment need not to satisfy electrically conductive requirement, consequently can select for use the better material of elasticity, has solved the problem that reduces the regulation bimetallic strip dynamics through supporting the shell fragment, has guaranteed feeling of bimetallic strip check-up to make the qualification rate of bimetallic strip check-up improve.
3. The utility model provides a two golden protection device has the extension piece that extends towards one side direction on the regulating arm that supports the shell fragment, and the bimetallic strip passes through the extension piece is connected as an organic wholely with the support shell fragment, so sets up, has solved in the subregion, the problem of arranging of bimetallic strip for the deformation of bimetallic strip can not take place to interfere with each other with the regulation that supports the shell fragment.
4. The utility model provides a two golden protection device for adjusting screw that supports the shell fragment and carry out regulation, the butt head on top is the arc structure, can twist soon the in-process, and the protection supports the shell fragment and does not receive the loss, improves life.
5. The utility model provides a two golden protection device, on supporting the shell fragment, on the inner wall of support arm, have the positioning groove who corresponds with adjusting screw's butt head, can avoid adjusting screw's butt head to slide on supporting the shell fragment through positioning groove to improve the accuracy nature of regulation.
6. The utility model provides a two golden protection device has the locating plate that stretches out towards the side on the static contact for when installing the static contact in the casing, be convenient for to placing and fixing a position of static contact.
7. The utility model provides a two golden protection device has the deformation section that is used for being connected with the bimetallic strip on the quiet contact, the deformation section is for bending the shape, and this deformation section is used for adapting to the deformation of bimetallic strip, the thickness of deformation section is less than the average thickness of static contact to reducible deformation section carries out the required dynamics of warping, and further angle position that makes the bimetallic strip adjusts and becomes more light.
8. The utility model provides a two golden protection device has the electric arc draw plate that the orientation kept away from the stationary contact and goes on extending on stationary contact, through this electric arc draw plate, is used for drawing electric arc, makes electric arc be transferred and concentrates to predetermineeing the position.
9. The utility model provides a circuit breaker owing to have above-mentioned arbitrary one bimetallic protection device, consequently have above-mentioned arbitrary one the advantage.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic perspective view of an embodiment of the bimetallic guard of the present invention;
FIG. 2 is a schematic bottom perspective view of the FIG. 1;
FIG. 3 is a schematic perspective view of the supporting spring plate in FIG. 1;
fig. 4 is a schematic perspective view of an internal structure of an embodiment of the circuit breaker of the present invention;
fig. 5 is an enlarged view of the area a in fig. 4.
Description of reference numerals:
1. a bimetal; 2. supporting the elastic sheet; 3. static contact; 4. a free end; 5. an extension piece; 6. a deformation section; 7. a stationary contact; 8. an arc striking plate; 9. a support arm; 10. an adjusting arm; 11. an adjusting screw; 12. a butting head; 13. a positioning groove; 14. a housing; 15. a moving contact; 16. locking; 17. positioning a plate; 18. and (5) positioning the boss.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Furthermore, the technical features mentioned in the different embodiments of the invention described below can be combined with each other as long as they do not conflict with each other.
Example 1
The present embodiment provides a specific implementation manner of a bimetallic protection device, which drives an operating mechanism of the bimetallic protection device to trip in an abnormal state of the electrical switching device, specifically, when a current in the electrical switching device is overloaded, the bimetallic protection device provided in the electrical switching device is affected by the current, and can drive the operating mechanism in the electrical switching device to perform a power-off operation. In practical applications, switching devices such as circuit breakers are used for power protection.
As shown in fig. 1 and fig. 2, the double-gold protection device provided by this embodiment includes: the bimetallic strip 1 and a supporting spring plate 2 and a static contact 3 which are respectively connected with the bimetallic strip 1. The bimetallic strip 1 is suitable for being arranged in a shell 14 of an electric switch device, one end of the bimetallic strip 1 is a connecting end, the other end of the bimetallic strip is a free end 4, when the current passing through the bimetallic strip 1 is overlarge, the bimetallic strip is heated and deformed, and therefore the free end 4 moves towards the direction of driving an operating mechanism in the electric switch device, and the operating mechanism is driven to execute. Two positioning plates 17 respectively extending towards two side edges are arranged on the static contact 3, when the static contact 3 is installed, the positioning plates 17 are inserted into the grooves in the shell to position the static contact 3, so that the contact between the moving contact and the static contact is ensured, the burning time of electric arcs on contacts is favorably shortened, and the loss of the contacts is reduced.
As shown in fig. 1, the supporting spring 2 and the fixed contact 3 are both connected to the connecting end of the bimetal strip 1 by welding. Specifically, the adjusting arm 10 of the supporting spring plate 2 is provided with an extending plate 5 extending towards one side direction, and the bimetallic strip 1 is connected with the supporting spring plate 2 into a whole through the extending plate 5 in a welding manner.
As shown in fig. 2, the stationary contact 3 has a deformation section 6 for connecting with the bimetal strip 1, and the deformation section 6 is in a bent shape. The thickness of the deformation section 6 is smaller than the average thickness of the static contact 3, so that when the angle position of the bimetallic strip 1 is verified, the verification resistance can be reduced, and the angle position of the bimetallic strip 1 can be adjusted more easily.
As shown in fig. 2, the static contact 3 is provided with a static contact 7 for contacting with the moving contact 15, the static contact 7 is an outward protruding bump, the bump abuts against the positioning boss 18 of the static contact, and the positioning boss 18 can play a role in auxiliary positioning, so that the problem of placement and positioning of the static contact 7 is solved, the burning time of an electric arc on the static contact 7 is reduced when the static contact is in contact with the moving contact 15, and the loss of the static contact 7 is reduced.
The static contact 3 is provided with an arc leading plate 8 extending towards the direction far away from the static contact 7, and the arc leading plate 8 is used for leading an arc so that the arc is transferred and concentrated to a preset position.
As shown in fig. 3, the supporting spring 2 is of a bent structure, the supporting spring 2 has a supporting arm 9 for connecting in the housing 14, the supporting spring 2 further has an adjusting arm 10 for connecting with the connecting end of the bimetal 1, and the distance between the adjusting arm 10 and the supporting arm 9 is suitable for being adjusted by an adjusting screw 11. The adjusting arm 10 of the supporting spring plate 2 is provided with a threaded hole, and the adjusting screw 11 is abutted against the inner wall of the supporting arm 9 after penetrating through the threaded hole for adjusting. The inner wall of the supporting arm 9 of the supporting elastic sheet 2 is provided with a positioning groove 13 corresponding to the abutting head 12 of the adjusting screw 11, and the abutting head 12 of the adjusting screw 11 is of an arc-shaped structure.
Application method
As shown in fig. 4 and 5, after the bimetal protection device is installed in the housing 14 of the electric switch device, when the angle position of the bimetal 1 is adjusted, first, the adjusting screw 11 is inserted through the adjusting arm 10 of the supporting spring 2, and the abutting head 12 of the adjusting screw 11 is pressed against the positioning recess 13 on the inner wall of the supporting arm 9 of the supporting spring 2.
Then, by screwing the adjusting screw 11, the distance between the supporting arm 9 of the supporting elastic sheet 2 and the adjusting arm 10 is adjusted, and because the supporting arm 9 of the supporting elastic sheet 2 is fixedly arranged in the shell 14 in a relatively clamped manner, the adjusting arm 10 performs relative displacement under the action of the adjusting screw 11.
Under the driving of the adjusting arm 10, the deformation section 6 of the static contact 3 slightly deforms, so that the bimetallic strip 1 moves, and the angle position of the bimetallic strip 1 in the housing 14 is adjusted.
Example 2
The present embodiment provides a specific implementation of a circuit breaker, as shown in fig. 4 and 5, including: the bimetallic protection device in embodiment 1 is disposed in a housing 14 of a circuit breaker, and the housing 14 further has a movable contact 15, and the movable contact 15 is disposed opposite to the stationary contact 3 of the bimetallic protection device.
Inside the case 14 of the circuit breaker there is an operating mechanism with a latch 16, which, by means of the rotation of the latch 16, performs the contact and separation of the movable contact 15 with the stationary contact 3.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.
Claims (10)
1. Gold bimetallic protection device, its characterized in that includes:
the bimetallic strip (1) is suitable for being arranged in a shell (14) of the electric switch device, one end of the bimetallic strip is a connecting end, the other end of the bimetallic strip is a free end (4), and the connecting end is suitable for being connected with a static contact (3) of the electric switch device;
the supporting elastic sheet (2) is of a bent structure and is provided with a supporting arm (9) used for being connected into the shell (14) and an adjusting arm (10) used for being connected with the connecting end of the bimetallic strip (1), and the distance between the adjusting arm (10) and the supporting arm (9) is suitable for being adjusted through an adjusting screw (11).
2. The bimetallic strip protector as claimed in claim 1, wherein the adjusting arm (10) of the supporting spring (2) is provided with an extending piece (5) extending towards one side direction, and the bimetallic strip (1) is connected with the supporting spring (2) into a whole through the extending piece (5).
3. The bimetallic strip protector as claimed in claim 2, characterized in that the bimetallic strip (1) and the supporting spring (2) are connected into a whole by welding.
4. The bimetallic guard of claim 1, further comprising:
the adjusting screw (11) is provided with an abutting head (12) which is suitable for abutting against the inner wall of the supporting arm (9), and the abutting head (12) is of an arc-shaped structure.
5. The bimetallic protection device as in claim 4, characterized in that the inner wall of the supporting arm (9) of the supporting spring (2) has a positioning groove (13) corresponding to the abutment head (12).
6. The bimetallic guard of any one of claims 1-5, further comprising:
and the static contact (3) is connected with the connecting end of the bimetallic strip (1) and is provided with a static contact (7) which is used for being contacted with the moving contact (15).
7. The bimetallic protection device as in claim 6, characterized in that the stationary contact (3) has a positioning plate (17) projecting towards the side;
and a positioning boss (18) is arranged on the static contact, and the static contact is abutted against one side of the positioning boss.
8. The bimetallic strip protection device as in claim 6, characterized in that the stationary contact (3) has a deformation section (6) for connecting with the bimetallic strip (1), the deformation section (6) is of a bent shape, and the thickness of the deformation section (6) is smaller than the average thickness of the stationary contact (3).
9. Bimetallic protection device according to claim 7 or 8, characterized in that the stationary contact (3) has an arc runner (8) extending away from the stationary contact (7).
10. A circuit breaker comprising the bimetallic protection device of any one of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020718084.3U CN211629018U (en) | 2020-04-30 | 2020-04-30 | Bimetallic protection device and circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020718084.3U CN211629018U (en) | 2020-04-30 | 2020-04-30 | Bimetallic protection device and circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211629018U true CN211629018U (en) | 2020-10-02 |
Family
ID=72622853
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020718084.3U Active CN211629018U (en) | 2020-04-30 | 2020-04-30 | Bimetallic protection device and circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211629018U (en) |
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2020
- 2020-04-30 CN CN202020718084.3U patent/CN211629018U/en active Active
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