CN210925874U - Thermal cut-off device with fusing function - Google Patents
Thermal cut-off device with fusing function Download PDFInfo
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- CN210925874U CN210925874U CN201922116647.1U CN201922116647U CN210925874U CN 210925874 U CN210925874 U CN 210925874U CN 201922116647 U CN201922116647 U CN 201922116647U CN 210925874 U CN210925874 U CN 210925874U
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Abstract
A thermal cut-off device having a fusing function. The problem of present thermal cut-off ware because the temperature sensing piece became invalid has the potential safety hazard has mainly been solved. The method is characterized in that: the base is further provided with a second static contact piece (13) and a second movable contact piece (14) with elasticity, the elasticity of the second movable contact piece drives the second movable contact piece to be electrically disconnected with the second static contact piece, the base further comprises a thermal fuse rod (3), the bottom of the thermal fuse rod is in contact with the second movable contact piece to enable the second movable contact piece and the second static contact piece to be kept in an electric contact state, and the top of the thermal fuse rod is pressed against the heating plate. The utility model provides a heat cutter with fusing function if the temperature sensing piece back that became invalid, can make second movable contact piece and second static contact divide the branch of breaking of realizing the circuit, safe and reliable through the fusing pole.
Description
Technical Field
The utility model relates to a temperature controller field, concretely relates to thermal cut-off ware with fusing function.
Background
The electric kettle is a necessary electric appliance product in modern kitchens and living rooms at present due to quick and convenient water boiling, and is suitable for drinking tea, coffee, beverage and the like.
When the electric kettle is used, the heat disconnector is often used for preventing dry burning, most of the existing heat disconnectors drive the movable contact piece and the static contact piece to be separated through the pin rod through the thermal deformation of the temperature sensing piece, however, the temperature sensing piece can fail due to the possible reasons of service life or production quality, so that the dry burning cannot be well prevented, and the use danger exists.
SUMMERY OF THE UTILITY MODEL
In order to overcome the not enough of background art, the utility model provides a thermal cut-off ware with fusing function has mainly solved present thermal cut-off ware because the temperature sensing piece became invalid there is the problem of potential safety hazard.
The utility model adopts the technical proposal that:
the thermal cut-off device with the fusing function comprises a base and a panel, wherein a first movable contact piece and a first static contact piece are correspondingly arranged on the base, a temperature sensing piece is arranged on the panel and used for driving the first movable contact piece to be separated from the first static contact piece when the panel is overheated, a second static contact piece and a second movable contact piece with elasticity are further arranged on the base, the elasticity of the second movable contact piece drives the second movable contact piece to be electrically disconnected with the second static contact piece, the thermal cut-off device further comprises a thermal fusing rod, the bottom of the thermal fusing rod is in contact with the second movable contact piece and used for enabling the second movable contact piece to be electrically contacted with the second static contact piece, and the top of the thermal fusing rod is pressed on a heating plate.
The tail end of the second movable contact piece is provided with a contact, and the thermal fuse rod is pressed against the middle end of the second movable contact piece.
The panel is provided with a through hole for the hot-melt rod to pass through.
The base is provided with a cross arm, the cross arm is provided with a guide seat, the guide seat is provided with a through guide hole, and the thermal fuse rod is in clearance fit with the guide hole.
The thermal fuse rod comprises a rod body and a boss arranged at the bottom of the rod body, and the diameter of the boss is larger than that of the guide hole.
The contact surface of the lug boss and the second movable contact piece is a spherical surface.
The second static contact is connected with the base through a screw.
The base is provided with a mounting seat, a clamping groove is formed in the mounting seat, the first movable contact spring is arranged in the clamping groove, and the cross arm is matched with the clamping groove in a clamping mode and abuts against and presses the first movable contact spring to fix the first movable contact spring.
The clamping groove is also internally provided with a positioning pin, and the first movable contact spring is provided with a positioning hole in clamping fit with the positioning pin.
The utility model has the advantages that: the utility model provides a heat cutter with fusing function if the temperature sensing piece back that became invalid, can make second movable contact piece and second static contact divide the branch of breaking of realizing the circuit, safe and reliable through the fusing pole.
Drawings
Fig. 1 is a perspective view of an embodiment of the present invention.
Fig. 2 is a schematic partial sectional view of an embodiment of the present invention.
Fig. 3 is a partial perspective view of an embodiment of the present invention.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings: as shown in the figure, the thermal cut-off device with the fusing function comprises a base 1 and a panel 2, wherein a first movable contact piece 11 and a first static contact piece 12 are correspondingly arranged on the base, a temperature sensing piece 21 is arranged on the panel and used for driving the first movable contact piece to be separated from the first static contact piece when the panel is overheated, a second static contact piece 13 and a second movable contact piece 14 with elasticity are further arranged on the base, the elasticity of the second movable contact piece drives the second movable contact piece to be electrically disconnected with the second static contact piece, the thermal cut-off device further comprises a thermal fusing rod 3, the bottom of the thermal fusing rod is in contact with the second movable contact piece and used for enabling the second movable contact piece to be kept in an electrical contact state with the second static contact piece, and the top of the thermal fusing rod is pressed on a heating plate. The first movable contact piece and the first static contact piece can be arranged on an L pole or an N pole, the second movable contact piece and the second static contact piece are correspondingly arranged on an N pole or an L pole, the switch is normally closed in a conventional state, the thermal fuse rod is abutted to the second movable contact piece to play a role in energy storage, after overheating, the thermal sensing piece (which can be a bimetallic piece) deforms and passes through the pin rod 20 to push the first movable contact piece and the second static contact piece to be separated, for the prior art, after the thermal sensing piece fails, the temperature continues to rise, the thermal fuse rod of the contact heating plate (which is connected with a power supply to serve as a heat source) is fused, force is not applied to the second movable contact piece any more, the second movable contact piece is separated under the elastic action, the separation is rapid, the use effect is better, and the melting point of the thermal fuse rod can be set according to specific conditions and needs to be lower than the melting point of the thermal fuse rod and the panel.
In this embodiment, as shown in fig. 3, the tail end of the second movable contact is provided with a contact 141, and the thermal fuse rod abuts against the middle end of the second movable contact. The energy storage function is better, and the using effect is better.
In this embodiment, as shown in the drawing, the panel is provided with a through hole 22 for the thermal fuse rod to pass through. The structure is compact, the fusing rod can conveniently penetrate through the structure, and a certain limiting effect is achieved.
In this embodiment, as shown in the figure, a cross arm 4 is disposed on the base, a guide seat 41 is disposed on the cross arm, a through guide hole 411 is disposed on the guide seat, and the thermal fuse rod is in clearance fit with the guide hole. The guide function is achieved, and assembly is facilitated.
In this embodiment, as shown in the figure, the thermal fuse link includes a rod body 31 and a boss 32 disposed at the bottom of the rod body, and the diameter of the boss is greater than that of the guide hole. Prevent falling out, the installation is firm.
In this embodiment, as shown in the figure, the contact surface of the boss and the second movable contact piece is a spherical surface.
In this embodiment, as shown in the figure, the second stationary contact is connected to the base by a screw 91. The installation is firm, and the adaptation fusing.
In this embodiment, as shown in the figure, be equipped with mount pad 15 on the base, be equipped with joint groove 151 in the mount pad, first static contact is located the joint inslot, the cross arm with joint groove joint cooperation just the cross arm support press in with fixed on the first static contact. The end is a conventional use end and is convenient to install.
In this embodiment, as shown in the figure, a positioning pin 152 is further disposed in the clamping groove, and a positioning hole 111 is disposed on the first static contact and is in clamping fit with the positioning pin. Further enhancing the stability of the installation.
In the description of the present invention, it is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.
The embodiments described with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention. The examples should not be construed as limiting the present invention, but any modifications made based on the spirit of the present invention should be within the scope of the present invention.
Claims (9)
1. Heat cutter with fusing function, including base (1) and panel (2), correspond on the base and be equipped with first movable contact spring (11) and first static contact spring (12), be equipped with temperature sensing piece (21) on the panel, the temperature sensing piece is used for overheated time drive first movable contact spring with first static contact spring separation, its characterized in that:
the base is also provided with a second static contact piece (13) and a second movable contact piece (14) with elasticity, the elasticity of the second movable contact piece drives the second movable contact piece to be electrically disconnected with the second static contact piece,
the heating plate is characterized by further comprising a thermal fuse rod (3), the bottom of the thermal fuse rod is in contact with the second movable contact piece and is used for enabling the second movable contact piece to be in electric contact with the second static contact piece, and the top of the thermal fuse rod is pressed against the heating plate.
2. The thermal disconnector having a fusing function as claimed in claim 1, wherein: and a contact (141) is arranged at the tail end of the second movable contact piece, and the thermal fuse rod is abutted against the middle end of the second movable contact piece.
3. The thermal disconnector having fusing function according to claim 1 or 2, wherein: the panel is provided with a through hole (22) for the thermal fuse rod to pass through.
4. The thermal disconnector having a fusing function as claimed in claim 1, wherein: the base is provided with a cross arm (4), the cross arm is provided with a guide seat (41), the guide seat is provided with a through guide hole (411), and the thermal fuse rod is in clearance fit with the guide hole.
5. The thermal disconnector having a fusing function as claimed in claim 4, wherein: the thermal fuse rod comprises a rod body (31) and a boss (32) arranged at the bottom of the rod body, and the diameter of the boss is larger than that of the guide hole.
6. The thermal disconnector having a fusing function as claimed in claim 5, wherein: the contact surface of the lug boss and the second movable contact piece is a spherical surface.
7. The thermal disconnector having a fusing function as claimed in claim 1, wherein: the second static contact piece is connected with the base through a screw (91).
8. The thermal disconnector having a fusing function as claimed in claim 4, wherein: be equipped with mount pad (15) on the base, be equipped with joint groove (151) in the mount pad, first static contact is located the joint inslot, the cross arm with joint groove joint cooperation just the cross arm support press in with fixed on the first static contact.
9. The thermal disconnector having a fusing function as claimed in claim 8, wherein: still be equipped with locating pin (152) in the joint inslot, be equipped with on the first static contact with locating pin joint complex locating hole (111).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922116647.1U CN210925874U (en) | 2019-12-02 | 2019-12-02 | Thermal cut-off device with fusing function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922116647.1U CN210925874U (en) | 2019-12-02 | 2019-12-02 | Thermal cut-off device with fusing function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210925874U true CN210925874U (en) | 2020-07-03 |
Family
ID=71368809
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922116647.1U Active CN210925874U (en) | 2019-12-02 | 2019-12-02 | Thermal cut-off device with fusing function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210925874U (en) |
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2019
- 2019-12-02 CN CN201922116647.1U patent/CN210925874U/en active Active
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