CN210898498U - Overcurrent protector - Google Patents
Overcurrent protector Download PDFInfo
- Publication number
- CN210898498U CN210898498U CN201921333844.2U CN201921333844U CN210898498U CN 210898498 U CN210898498 U CN 210898498U CN 201921333844 U CN201921333844 U CN 201921333844U CN 210898498 U CN210898498 U CN 210898498U
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- China
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- sensing element
- temperature sensing
- overcurrent protector
- heating sheet
- sheet
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Abstract
The utility model relates to a protection device, in particular to an overcurrent protector, which comprises a shell and a switch structure, wherein the shell comprises a first accommodating part and a second accommodating part, the first accommodating part is communicated with the second accommodating part, and the vertical diameter of the second accommodating part is larger than that of the first accommodating part; the switch structure comprises a moving assembly, the moving assembly comprises a temperature sensing element and a heating sheet, one end of the temperature sensing element is connected with the heating sheet, the part of the temperature sensing element connected with the heating sheet is arranged in the first accommodating part, and the heating sheet is tightly attached to the top surface of the first accommodating part under the elastic action of the temperature sensing element. The current protector provided by the embodiment can not only play a role of protecting a circuit, but also can ensure that the temperature sensing element is not easy to separate from the heating sheet after moving for many times, thereby ensuring the temperature sensing effect of the temperature sensing element and prolonging the service life of the protector.
Description
Technical Field
The utility model relates to a protection device, concretely relates to overcurrent protector.
Background
Most of the protectors are applied to motors, wherein part of the protectors are electrically operated and have large current, such as water pumps, electric tools and the like, and along with the design and popularization of the high-power electric tools, the structure of the protector is designed to meet the requirement of large current more and more.
The temperature sensing element adopts welding or riveted mode to be connected with the piece that generates heat more in the existing design, and in the course of the work, because the temperature sensing element moves many times and easily causes the interval grow between temperature sensing element and the piece that generates heat or even temperature sensing element and the piece that generates heat break away from to make temperature sensing element's temperature sensing effect worsen, thereby influence protector's work.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a solve the poor problem of temperature-sensing element temperature sensing effect of protector among the prior art, provide an overcurrent protector, the utility model provides a current protector temperature-sensing element is difficult for breaking away from the piece that generates heat to temperature-sensing element's temperature sensing effect has been guaranteed.
For solving the technical problem, the utility model discloses a technical scheme:
an over-current protector comprising:
a housing including a first accommodating portion and a second accommodating portion, the first accommodating portion communicating with the second accommodating portion, a vertical direction diameter of the second accommodating portion being larger than a vertical direction diameter of the first accommodating portion;
the switch structure comprises a moving assembly, the moving assembly comprises a temperature sensing element and a heating sheet, one end of the temperature sensing element is connected with the heating sheet, the part of the temperature sensing element connected with the heating sheet is arranged in the first accommodating part, and the heating sheet is tightly attached to the top surface of the first accommodating part under the elastic action of the temperature sensing element.
Furthermore, the movable assembly further comprises a welding piece and a connecting piece, one end of the welding piece is connected with one end of the connecting piece, the other end of the connecting piece is connected with the heating piece, one end of a temperature sensing element is fixed below the heating piece, and a movable contact is arranged at the other end of the temperature sensing element.
Further, the switch structure also comprises a static component, wherein the static component comprises a metal sheet and a static contact, and the static contact is arranged at the position opposite to the movable contact.
Further, the overcurrent protector further comprises an insulating base, the insulating base is an L-shaped base body, two through holes are formed in the vertical portion of the L-shaped base body, the two through holes are respectively a first through hole and a second through hole, and the first through hole of the insulating base is arranged below the second through hole.
Further, the other end of the metal sheet is inserted into the first through hole, and the other end of the soldering sheet is inserted into the second through hole.
Furthermore, the metal sheet is arranged to be of a bending structure, the bending structure comprises a first connecting portion, a second connecting portion and a third connecting portion, the second connecting portion is an inclined plane, and the first connecting portion is connected with the third connecting portion through the second connecting portion.
Furthermore, the first connecting part of the metal sheet is tightly attached to the base of the insulating seat.
Further, the housing is provided with an opening, and the switch structure is put into the housing from the opening.
Further, the insulating seat and the shell form a closed space.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model provides a shell includes first holding portion and second holding portion, first holding portion and second holding portion intercommunication, the vertical direction diameter of second holding portion is greater than the vertical direction diameter of first holding portion, the part setting that temperature-sensing element and piece that generates heat are connected is in first holding portion, first holding portion just can hold the temperature-sensing element and the part that the piece that generates heat is connected, in operation, because the support of first holding portion, temperature-sensing element multi-motion can not cause temperature-sensing element to break away from the piece that generates heat, the problem that interval grow between temperature-sensing element and the piece that generates heat among the prior art easily caused by temperature-sensing element multi-time action is temperature-sensing element and the piece that generates heat breaks away from even has been solved, the utility model discloses can guarantee temperature-sensing element's temperature sensing effect, prolong the life of protector.
Drawings
Fig. 1 is a front sectional view of a current protector according to an embodiment of the present invention;
fig. 2 is an exploded view of the current protector according to the embodiment of the present invention.
In the figure: the temperature-sensing device comprises a shell 1, a heating sheet 2, a welding sheet 3, a metal sheet 4, an insulating seat 5, a temperature-sensing element 6, a movable contact 7, an iron nail 8 and a connecting piece 9.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. 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.
As shown in fig. 1, the current protector provided by this embodiment includes a housing 1, a switch structure and an insulating base 5, where the switch structure and the insulating base 5 are disposed in the housing 1, and the insulating base 5 and the housing 1 form a closed space.
As a specific embodiment of the housing 1 provided by this embodiment, as shown in fig. 1 and fig. 2, the housing 1 is configured as a duckbill shape, the housing 1 includes a first receiving portion and a second receiving portion, the first receiving portion is communicated with the second receiving portion, a communication position of the first receiving portion and the second receiving portion is configured as an inclined surface, an inclination angle of the inclined surface can be changed to change a pressure of a connection portion of the heat generating sheet 2 and the temperature sensing element 6, when an angle formed by the inclined surface and the first receiving portion is increased, the heat generating sheet 2 and the temperature sensing element 6 are more closely attached, so that heat can be more easily transferred to the temperature sensing element 6, so that a temperature of the temperature sensing element 6 is closer to a temperature of the heat generating sheet 2, when the angle formed by the inclined surface and the first receiving portion is decreased, a gap between the heat generating sheet 2 and the temperature sensing element 6 is slightly increased, so that a temperature of the, the temperature of the temperature sensitive element 6 can be changed by changing the angle of the inclined surface.
Further, the diameter of the vertical direction of the second accommodating part is larger than that of the first accommodating part, the shell 1 is provided with an opening, the switch structure is placed into the shell 1 from the opening, and the insulating base 5 and the shell 1 form a closed space.
As a specific embodiment of the insulating base 5 provided in this embodiment, as shown in fig. 2, the insulating base 5 includes a base and a vertical base body connected to the base, the vertical base body is provided with two through holes, the two through holes are respectively a first through hole and a second through hole, the first through hole of the insulating base 5 is disposed below the second through hole, so as to facilitate the soldering terminal 3 and the metal terminal 4 to pass through the two through holes to connect to an external circuit, and at the same time, the height difference between the two through holes facilitates the moving contact 7 to disconnect or connect to the stationary contact.
As shown in fig. 2, as a specific example of the switch structure provided in this embodiment, the switch structure includes a static component and a dynamic component.
Specifically, quiet subassembly includes sheetmetal 4, and the one end of this sheetmetal 4 is provided with the stationary contact, and in the first through-hole of this sheetmetal 4 other end inserted insulating seat 5, the stationary contact set up to bending structure, and bending structure includes first connecting portion, second connecting portion and third connecting portion, and the second connecting portion are the inclined plane, and first connecting portion connect the third connecting portion through the second connecting portion, and the base of insulating seat 5 is hugged closely to the first connecting portion of quiet subassembly, and insulating seat 5 provides the support for the sheetmetal.
Specifically, move the subassembly and include temperature-sensing element 6, generate heat piece 2, welding piece 3 and connecting piece 9, the one end of connecting piece 9 is connected to the one end of welding piece 3, welding piece 3 links together through welding or riveted mode with connecting piece 9, piece 2 generates heat is connected to the other end of connecting piece 9, the one end of the fixed temperature-sensing element 6 in below of piece 2 generates heat, generate heat and fix together through iron nail 8 between piece 2 and the temperature-sensing element 6, certainly the fixed mode can also select other, for example rivet or welding, do not too much restriction to this.
Furthermore, the connecting piece 9, the heating element 2 and the temperature sensing element 6 are connected together, and the first containing part is arranged in the first containing part of the shell 1, which can just contain the part of the heating element 2 and the temperature sensing element 6 which are connected together, because of the support of the first containing part, the movement of the temperature sensing element 6 after being heated and deformed can not easily cause the temperature sensing element 6 to be separated from the heating element 2, thereby ensuring the temperature sensing effect of the temperature sensing element 6, the rated current of the protector can be changed by increasing the width size of the temperature sensing element 6, the other end of the temperature sensing element 6 is provided with a movable contact 7, the movable contact 7 is arranged at the relative position of the stationary contact, when the circuit normally works, the stationary contact and the movable contact 7 are in a normally closed state, when the circuit is over-current, the power of the heating element 2 is increased, the temperature is increased and the temperature is transmitted to the, the temperature sensing element 6 is deformed and the movable contact 7 and the stationary contact are disconnected, thereby protecting the circuit from being damaged.
In summary, the current protector provided in this embodiment not only can play a role of protecting a circuit, but also can make the temperature sensing element 6 not easy to separate from the heat generating sheet 2 after moving for many times, thereby ensuring the temperature sensing effect of the temperature sensing element 6 and prolonging the service life of the protector.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (9)
1. An overcurrent protector, comprising:
a housing (1), the housing (1) including a first accommodation portion and a second accommodation portion, the first accommodation portion communicating with the second accommodation portion, a vertical direction diameter of the second accommodation portion being larger than a vertical direction diameter of the first accommodation portion;
the switch structure comprises a moving assembly, the moving assembly comprises a temperature sensing element (6) and a heating sheet (2), one end of the temperature sensing element (6) is connected with the heating sheet (2), the temperature sensing element (6) and the part connected with the heating sheet (2) are arranged in the first accommodating part, and the heating sheet (2) is tightly attached to the top surface of the first accommodating part under the elastic action of the temperature sensing element (6).
2. The overcurrent protector as claimed in claim 1, wherein the movable assembly further comprises a welding sheet (3) and a connecting piece (9), one end of the welding sheet (3) is connected with one end of the connecting piece (9), the other end of the connecting piece (9) is connected with the heating sheet (2), one end of a temperature sensing element (6) is fixed below the heating sheet (2), and the other end of the temperature sensing element (6) is provided with a movable contact (7).
3. An overcurrent protector according to claim 2 wherein the switch arrangement further comprises a stationary assembly comprising a metal blade (4) and a stationary contact, the stationary contact being disposed opposite the movable contact.
4. An overcurrent protector according to claim 3, further comprising an insulating base (5), wherein the insulating base (5) is an L-shaped base body, and the vertical portion of the L-shaped base body is provided with two through holes, which are a first through hole and a second through hole, respectively, and the first through hole of the insulating base (5) is disposed below the second through hole.
5. An overcurrent protector according to claim 4, characterized in that the other end of the metal sheet (4) is inserted into the first through hole and the other end of the solder sheet (3) is inserted into the second through hole.
6. The overcurrent protector as recited in claim 5, wherein the metal sheet (4) is provided as a bent structure, the bent structure comprises a first connecting portion, a second connecting portion and a third connecting portion, the second connecting portion is an inclined surface, and the first connecting portion is connected with the third connecting portion through the second connecting portion.
7. An overcurrent protector according to claim 6, characterized in that the first connection of the metal sheet (4) abuts against the base of the insulating holder (5).
8. The overcurrent protector as claimed in claim 7, characterized in that the housing (1) is provided with an opening from which the switch arrangement is placed into the housing (1).
9. An overcurrent protector according to claim 8, characterized in that the insulating holder (5) forms a closed space with the housing (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921333844.2U CN210898498U (en) | 2019-08-16 | 2019-08-16 | Overcurrent protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921333844.2U CN210898498U (en) | 2019-08-16 | 2019-08-16 | Overcurrent protector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210898498U true CN210898498U (en) | 2020-06-30 |
Family
ID=71317877
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921333844.2U Active CN210898498U (en) | 2019-08-16 | 2019-08-16 | Overcurrent protector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210898498U (en) |
-
2019
- 2019-08-16 CN CN201921333844.2U patent/CN210898498U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |