CN113192806B - Multi-channel synchronous control temperature fuse - Google Patents
Multi-channel synchronous control temperature fuse Download PDFInfo
- Publication number
- CN113192806B CN113192806B CN202110327379.7A CN202110327379A CN113192806B CN 113192806 B CN113192806 B CN 113192806B CN 202110327379 A CN202110327379 A CN 202110327379A CN 113192806 B CN113192806 B CN 113192806B
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- temperature sensing
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- 230000001360 synchronised effect Effects 0.000 title claims abstract description 23
- 230000001960 triggered effect Effects 0.000 claims abstract description 9
- 230000000712 assembly Effects 0.000 claims description 13
- 238000000429 assembly Methods 0.000 claims description 13
- 125000006850 spacer group Chemical group 0.000 claims description 10
- 229910003460 diamond Inorganic materials 0.000 claims description 8
- 239000010432 diamond Substances 0.000 claims description 8
- 239000011347 resin Substances 0.000 claims description 7
- 229920005989 resin Polymers 0.000 claims description 7
- 238000007789 sealing Methods 0.000 claims description 7
- 238000002955 isolation Methods 0.000 description 15
- 235000012431 wafers Nutrition 0.000 description 13
- 230000002159 abnormal effect Effects 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000000155 melt Substances 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
- H01H85/02—Details
- H01H85/04—Fuses, i.e. expendable parts of the protective device, e.g. cartridges
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
- H01H85/02—Details
- H01H85/04—Fuses, i.e. expendable parts of the protective device, e.g. cartridges
- H01H85/05—Component parts thereof
- H01H85/143—Electrical contacts; Fastening fusible members to such contacts
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
- H01H85/02—Details
- H01H85/04—Fuses, i.e. expendable parts of the protective device, e.g. cartridges
- H01H85/05—Component parts thereof
- H01H85/165—Casings
Landscapes
- Fuses (AREA)
Abstract
The invention provides a multichannel synchronous control temperature fuse, which comprises a shell, and a temperature sensing body, a conductive component and an electrode component which are respectively arranged in the shell, wherein the temperature sensing body, the conductive component and the electrode component are sequentially arranged along the direction from one end to the other end of the shell, the electrode component is provided with a plurality of mutually independent electric terminal components, each electric terminal component at least comprises two electric contacts, the two electric contacts are electrically connected through the conductive component, an elastic piece is arranged between the conductive component and the electrode component, when the temperature sensing body is triggered, the elastic piece is released from a compressed state so as to disconnect the two electric contacts of the plurality of channels.
Description
Technical Field
The invention relates to the field of temperature fuses, in particular to a multi-channel synchronous control temperature fuse.
Background
The temperature fuse is an over-temperature protection component, when the protected electronic equipment generates abnormal fault heat and the temperature reaches the fusing temperature of the temperature fuse, the fuse is fused, so that a circuit is cut off, and the abnormal temperature is prevented from continuously rising to cause fire. At present, a plurality of temperature fuses can independently control one circuit and cannot meet the requirement of simultaneous control of multiple circuits, so that the temperature fuses capable of simultaneously cutting off multiple circuits are required to be designed.
Disclosure of Invention
In order to overcome the defects in the prior art, the technical problem to be solved by the invention is to provide a multi-channel synchronous control temperature fuse.
In order to solve the technical problems, the invention adopts the following technical scheme: the utility model provides a multichannel synchronous control's temperature fuse, including the shell with set up temperature sensing body, conductive component and the electrode assembly in the shell is inside respectively, temperature sensing body, conductive component and electrode assembly set gradually along shell one end to the other end direction, the electrode assembly is equipped with multichannel mutually independent electric terminal assembly, every way electric terminal assembly includes two electric contacts at least, and two electric contacts are connected through conductive component electricity, be equipped with the elastic component between conductive component and the electrode assembly, when the temperature sensing body is triggered, the elastic component is released by compression state to make the disconnection of two electric contacts of multichannel.
Further, each path of electric terminal assembly comprises two electrode plates which are arranged in parallel relatively, two electric contacts are respectively arranged on the two electrode plates, each electric terminal assembly comprises a mounting bracket and an electric conduction ring sleeved on the surface of the mounting bracket, and the two electrode plates are respectively arranged on two opposite sides of the electric conduction ring.
Further, the number of the paths of the electric terminal assemblies is two, and projection points of the four electric contacts in one direction are positioned at four vertex positions on the same diamond; the number of the conducting rings is two, and the two conducting rings are sequentially sleeved on the surface of the mounting bracket along the direction from one end of the shell to the other end of the shell.
Further, the distance between the two conducting rings in the direction from one end of the shell to the other end of the shell is larger than the thickness of the temperature sensing body in the direction from one end of the shell to the other end of the shell.
Further, the two paths of electric terminal assemblies are a first path of electric terminal assembly and a second path of electric terminal assembly respectively, the first path of electric terminal assembly comprises a first electric contact and a second electric contact, and the second path of electric terminal assembly comprises a third electric contact and a fourth electric contact;
further, the two conductive rings are a first conductive ring and a second conductive ring respectively;
Further, the distance between the first electric contact and the second electric contact is matched with the distance between the two opposite ends of the first conductive ring, and the distance between the third electric contact and the fourth electric contact is matched with the distance between the two opposite ends of the second conductive ring.
Further, the temperature sensing device further comprises a guide isolation piece, the cross section of the guide isolation piece is U-shaped, a through hole is formed in the bottom of the guide isolation piece corresponding to the U-shaped, one end of the conductive component is placed inside the guide isolation piece and corresponds to the inner surface of the bottom, the temperature sensing body is in contact with the outer surface of the bottom, an inner cavity is formed in one end of the conductive component, and an opening of the inner cavity is communicated with the temperature sensing body through the through hole.
Further, each electric terminal assembly comprises two electrode columns and electrode plug-in components which are relatively parallel to each other, each electrode plug-in component is provided with a shaft hole, each electrode column penetrates through each shaft hole and is fixed, each electrode column is provided with a contact at the end part, each conductive assembly comprises a mounting bracket and a conductive plate arranged on the mounting bracket, and the two contacts on the electrode columns are respectively arranged relatively to the two opposite ends of the conductive plate.
Furthermore, the number of the paths of the electric terminal assembly is two, and projection points of the four contacts in one direction are positioned at four vertex positions on the same diamond; the number of the conducting plates is two, and the two conducting plates are sequentially arranged on the mounting bracket along the direction from one end of the shell to the other end of the shell.
Further, a cavity with an opening is formed inwards at one end face of the shell, close to the temperature sensing body, the opening of the cavity is arranged towards the direction of the conductive component, a guide isolation piece is further arranged in the cavity, the guide isolation piece comprises two wafers and a drum spring, the two wafers are respectively placed at two ends of the drum spring, one wafer is far away from one end face of the drum spring and is in contact with the conductive component, and the other wafer is far away from one end face of the drum spring and is in contact with the temperature sensing body.
Further, one end of the case corresponding to the electrode assembly has a case opening, and sealing resin is coated at the case opening.
From the above description, the beneficial effects of the invention are as follows:
The multi-path synchronous control temperature fuse changes the internal structure of the fuse on the basis of the traditional temperature fuse, the external circuit is connected with the electrode assembly by utilizing the conductive assembly, the conductive assembly is simultaneously connected into the multi-path circuit through the multi-path mutually independent power connection terminal assemblies, the temperature sensing body is used as a trigger component, and when the circuit is abnormal, the fuse is fused and can cut off the multi-path circuit at the same time, so that the temperature fuse is safer and more reliable to use.
Drawings
FIG. 1 is a perspective exploded view of a multi-path synchronous control thermal fuse of the present invention;
FIG. 2 is a perspective cross-sectional view of a multi-channel synchronous control thermal fuse according to the present invention;
FIG. 3 is a perspective cross-sectional view of a multi-path synchronous control temperature fuse according to another aspect of the present invention;
FIG. 4 is a perspective cross-sectional view of a multi-channel synchronous control thermal fuse according to the present invention;
FIG. 5 is a perspective cross-sectional view of another view of the multi-path synchronous control temperature fuse of the present invention;
FIG. 6 is a perspective exploded view of a multi-path synchronous control thermal fuse of the present invention;
FIG. 7 is a perspective cross-sectional view of a multi-channel synchronous control thermal fuse of the present invention;
FIG. 8 is a perspective cross-sectional view of another view of a multi-path synchronous control temperature fuse of the present invention;
FIG. 9 is a perspective cross-sectional view of a multi-channel synchronous control thermal fuse of the present invention;
FIG. 10 is a perspective cross-sectional view of another view of a multi-path synchronous control temperature fuse of the present invention;
Description of the reference numerals:
1-a housing; 2-a temperature sensing body; 3-guiding spacers; 4-a conductive component; 41-conducting ring I; 42-conducting ring II; 5-a spring; a 6-electrode assembly; 60-electrode plates; 61-contact one; 62-contact two; 63-contact three; 64-contact four; 7-a straight spring; 8-electrode columns; 81-contact one; 82-contact two; 83-contact three; 84-contact four; 9-electrode inserts; 10-sealing resin; 11-wafer; 12-a drum spring; 13-a wafer; 14-a conductive component; 141-first conductive plate; 142-second conductive plate.
Detailed Description
In order to describe the technical contents, the achieved objects and effects of the present invention in detail, the following description will be made with reference to the embodiments in conjunction with the accompanying drawings.
It should be noted that, since the two-way electrical terminal assembly is taken as an example in this embodiment, the other view is a view rotated by 90 ° around the housing axis from one view.
Referring to fig. 1 to 10, a temperature fuse with multiple paths of synchronous control includes a housing, and a temperature sensing body, a conductive assembly and an electrode assembly which are respectively disposed inside the housing, wherein the temperature sensing body, the conductive assembly and the electrode assembly are sequentially disposed along one end of the housing to the other end, the electrode assembly is provided with multiple paths of mutually independent electrical terminal assemblies, each path of electrical terminal assembly at least includes two electrical contacts, the two electrical contacts are electrically connected through the conductive assembly, an elastic member is disposed between the conductive assembly and the electrode assembly, and when the temperature sensing body is triggered, the elastic member is released from a compressed state to disconnect the two electrical contacts of multiple paths.
From the above description, the beneficial effects of the invention are as follows:
The multi-path synchronous control temperature fuse changes the internal structure of the fuse on the basis of the traditional temperature fuse, the external circuit is connected with the electrode assembly by utilizing the conductive assembly, the conductive assembly is simultaneously connected into the multi-path circuit through the multi-path mutually independent power connection terminal assemblies, the temperature sensing body is used as a trigger component, and when the circuit is abnormal, the fuse is fused and can cut off the multi-path circuit at the same time, so that the temperature fuse is safer and more reliable to use.
Further, each path of electric terminal assembly comprises two electrode plates which are arranged in parallel relatively, two electric contacts are respectively arranged on the two electrode plates, each electric terminal assembly comprises a mounting bracket and an electric conduction ring sleeved on the surface of the mounting bracket, and the two electrode plates are respectively arranged on two opposite sides of the electric conduction ring.
As is apparent from the above description, the electrical terminal assembly is connected to an external circuit, and contacts on both electrode pads of the electrical terminal assembly are brought into contact with the conductive ring, completing the circuit connection.
Further, the number of the paths of the electric terminal assemblies is two, and projection points of the four electric contacts in one direction are positioned at four vertex positions on the same diamond; the number of the conducting rings is two, and the two conducting rings are sequentially sleeved on the surface of the mounting bracket along the direction from one end of the shell to the other end of the shell.
As is apparent from the above description, the two-way electrical terminal assembly is simultaneously connected to two circuits, and the contacts of the two-way electrical terminal assembly are respectively contacted with two conductive rings at corresponding positions, so that the fuse can be simultaneously connected to two circuits.
Further, the distance between the two conducting rings in the direction from one end of the shell to the other end of the shell is larger than the thickness of the temperature sensing body in the direction from one end of the shell to the other end of the shell.
As is apparent from the above description, when the temperature sensing body is triggered, the elastic member between the conductive member and the electrode member is released from the compressed state, and the distance between the conductive rings in the direction from one end of the housing to the other end of the housing is set to be larger than the thickness of the temperature sensing body in the direction from one end of the housing to the other end of the housing, so as to ensure that the two electrical contacts of multiple paths are disconnected and not mutually affected.
Further, the two paths of electric terminal assemblies are a first path of electric terminal assembly and a second path of electric terminal assembly respectively, the first path of electric terminal assembly comprises a first electric contact and a second electric contact, and the second path of electric terminal assembly comprises a third electric contact and a fourth electric contact;
further, the two conductive rings are a first conductive ring and a second conductive ring respectively;
Further, the distance between the first electric contact and the second electric contact is matched with the distance between the two opposite ends of the first conductive ring, and the distance between the third electric contact and the fourth electric contact is matched with the distance between the two opposite ends of the second conductive ring.
As is apparent from the above description, when the temperature sensing body is triggered, the elastic member between the conductive member and the electrode member is released from the compressed state, and the distance between the opposite ends of the second conductive ring is set to be larger than the distance between the opposite ends of the first conductive ring, so as to ensure that the two electrical contacts of the multiple paths are disconnected and not mutually affected.
Further, the temperature sensing device further comprises a guide isolation piece, the cross section of the guide isolation piece is U-shaped, a through hole is formed in the bottom of the guide isolation piece corresponding to the U-shaped, one end of the conductive component is placed inside the guide isolation piece and corresponds to the inner surface of the bottom, the temperature sensing body is in contact with the outer surface of the bottom, an inner cavity is formed in one end of the conductive component, and an opening of the inner cavity is communicated with the temperature sensing body through the through hole.
As is apparent from the above description, the bottom of the guide spacer corresponding to the U-shape is provided with a through hole, one end of the conductive component is provided with an inner cavity, and an opening of the inner cavity is communicated with the temperature sensing body through the through hole, so that the melted temperature sensing body can be accommodated, when the elastic element between the conductive component and the electrode component is released from the compressed state after the temperature sensing body is melted, the melted temperature sensing body enters the inner cavity of the conductive component, and the multiple two electrical contacts are disconnected with the conductive ring, thereby cutting off the current.
Further, each electric terminal assembly comprises two electrode columns and electrode plug-in components which are relatively parallel to each other, each electrode plug-in component is provided with a shaft hole, each electrode column penetrates through each shaft hole and is fixed, each electrode column is provided with a contact at the end part, each conductive assembly comprises a mounting bracket and a conductive plate arranged on the mounting bracket, and the two contacts on the electrode columns are respectively arranged relatively to the two opposite ends of the conductive plate.
As is apparent from the above description, the electrical terminal assembly is connected to an external circuit, and the contacts of the two electrode tab posts of the electrical terminal assembly are in contact with the two ends of the conductive ring, completing the circuit connection.
Furthermore, the number of the paths of the electric terminal assembly is two, and projection points of the four contacts in one direction are positioned at four vertex positions on the same diamond; the number of the conducting plates is two, and the two conducting plates are sequentially arranged on the mounting bracket along the direction from one end of the shell to the other end of the shell.
As is apparent from the above description, the two-way electrical terminal assembly is simultaneously connected to two circuits, and the contacts of the two-way electrical terminal assembly are respectively contacted with two conductive plates at corresponding positions, so that the fuse can be simultaneously connected to two circuits.
Further, a cavity with an opening is formed inwards at one end face of the shell, close to the temperature sensing body, the opening of the cavity is arranged towards the direction of the conductive component, a guide isolation piece is further arranged in the cavity, the guide isolation piece comprises two wafers and a drum spring, the two wafers are respectively placed at two ends of the drum spring, one wafer is far away from one end face of the drum spring and is in contact with the conductive component, and the other wafer is far away from one end face of the drum spring and is in contact with the temperature sensing body.
As is apparent from the above description, a cavity having an opening is formed inwardly at one end face of the temperature sensing body to accommodate the temperature sensing body, the disc, the drum spring and the conductive member, and when the elastic member between the conductive member and the electrode member is released from the compressed state, the temperature sensing body can flow into the space of the drum spring, and the multiple two electrical contacts are disconnected from the conductive plate, thereby cutting off the current.
Further, one end of the case corresponding to the electrode assembly has a case opening, and sealing resin is coated at the case opening.
As is apparent from the above description, the application of the sealing resin at the opening of the case can form a sealed space integrally with the fuse, thereby increasing safety.
Referring to fig. 1 to 5, a first embodiment of the present invention is as follows:
in this embodiment, fig. 1 is a perspective exploded view of the first embodiment, and fig. 2 to 5 are sectional views of the first embodiment.
The temperature fuse comprises a shell 1, a temperature sensing body 2, a guide isolation piece 3, a conductive component 4, a spring 5 and an electrode component 6 which are respectively arranged in the shell, wherein the temperature sensing body 2, the guide isolation piece 3, the conductive component 4, the spring 5 and the electrode component 6 are sequentially arranged along the direction from one end to the other end of the shell, the electrode component 6 is provided with a plurality of paths of mutually independent electric connection terminal components, each path of electric connection terminal component at least comprises two electric connection contacts, the two electric connection contacts are electrically connected through the conductive component, an elastic piece is arranged between the conductive component and the electrode component, and when the temperature sensing body is triggered, the spring 5 is released from a compressed state so as to disconnect the two electric connection contacts.
Each path of electric terminal assembly comprises two electrode plates which are arranged in parallel relatively, two electric contacts are respectively arranged on the two electrode plates, each conductive assembly comprises a mounting bracket and a conductive ring sleeved on the surface of the mounting bracket, and the two electrode plates are respectively arranged on two opposite sides of the conductive ring.
The number of the electric terminal assemblies is two, and projection points of the four electric contacts in one direction are positioned at four vertex positions on the same diamond; the number of the conducting rings is two, and the two conducting rings are sequentially sleeved on the surface of the mounting bracket along the direction from one end of the shell to the other end of the shell.
The distance between the two conducting rings in the direction from one end of the shell to the other end of the shell is larger than the thickness of the temperature sensing body in the direction from one end of the shell to the other end of the shell.
The two paths of the electric terminal assemblies are a first path of electric terminal assembly and a second path of electric terminal assembly respectively, the first path of electric terminal assembly comprises a first electric contact and a second electric contact, and the second path of electric terminal assembly comprises a third electric contact and a fourth electric contact;
In this embodiment, the electrode assembly 6 includes two sets of two electrode plates 60 disposed in parallel, the first electrical contact is a first contact 61, the second electrical contact is a second contact 62, the third electrical contact is a third contact 63, and the fourth electrical contact is a fourth contact 64.
The two conducting rings are respectively a first conducting ring and a second conducting ring; in this embodiment, the first conductive ring is the first conductive ring 41, and the second conductive ring is the second conductive ring 42. The first conducting ring and the second conducting ring are both made of metal and are annular in shape, and the diameter of the second conducting ring is larger than that of the first conducting ring.
The distance between the first electric contact and the second electric contact is matched with the distance between the opposite ends of the first conductive ring, the distance between the third electric contact and the fourth electric contact is matched with the distance between the opposite ends of the second conductive ring, the distance between the opposite ends of the second conductive ring can be smaller than or equal to the distance between the opposite ends of the first conductive ring, the electrode plate corresponding to the second conductive ring is of a special-shaped structure, and the distance between the opposite ends of the second conductive ring is preferably larger than the distance between the opposite ends of the first conductive ring.
The temperature sensing body is in contact with the outer surface of the bottom, an inner cavity is formed in one end of the conductive component, and an opening of the inner cavity is communicated with the temperature sensing body through the through hole. The number of the through holes is multiple, the through holes are divided into holes with different calibers, the holes with large calibers are opposite to the center of the mounting bracket, and the holes with small calibers are uniformly distributed around the holes with large calibers.
In this embodiment, the mounting bracket is a conical housing, two annular mounting grooves are formed in the middle of the conical housing, the two annular mounting grooves are respectively used for mounting the first conductive ring 41 and the second conductive ring 42, a groove with an opening is integrally formed in the head of the conical housing (i.e., near one end of the electrode assembly), the opening faces the electrode assembly, a groove is also formed in one side face of the electrode assembly, which faces the mounting bracket, and the two grooves together form a cavity for placing the spring. The tail of the conical shell is provided with an opening, a cavity is formed in the conical shell, two ends of the cavity are respectively communicated with the openings at two ends of the conical shell, and the cavity is used for accommodating the temperature sensing body which enters through the through hole in the guide isolation piece after being melted.
In this embodiment, the spring 5 is fixedly connected with the electrode assembly 6, the opening of the case is swaged and the sealing resin 10 is applied, so that the inside is completely sealed, and the safety is increased.
Fig. 2 and 3 show the fuse in normal operation, the circuit is in a conductive state, one pole of the circuit is in contact with the first conductive ring 41 through the first contact 61, and is conducted to the second contact 62 opposite to the first contact, so that the other pole of the circuit is communicated; similarly, the third contact 63 and the fourth contact 64 are connected by the second conductive ring 42, and the circuit is thus connected.
Fig. 4 and 5 show that when the temperature of the protected object exceeds the melting temperature of the temperature sensing body 2, the temperature sensing body melts, the spring 5 pushes the whole conductive assembly 4 to move toward the bottom of the housing, and finally the circuit is cut off. It can be seen that one pole of the circuit is disconnected from the first conductive ring 41 by contact one 61 and cannot form a path with the opposite contact two 62; similarly, contact three 63 and contact four 64 cannot communicate due to the disengagement of conductive ring two 42, and the circuit is thus broken.
Referring to fig. 6 to 10, a second embodiment of the invention is as follows:
Fig. 6 is a perspective exploded view of the second embodiment, and fig. 7 to 10 are sectional views of the second embodiment.
The temperature fuse comprises a shell 1, a temperature sensing body 2, a wafer 11, a drum spring 12, a wafer 13, a conductive component 14, a straight spring 7, an electrode column 8 and an electrode plug-in unit 9 which are respectively arranged in the shell, wherein the temperature sensing body 2, the wafer 11, the drum spring 12, the wafer 13, the conductive component 14, the straight spring 7, the electrode column 8 and the electrode plug-in unit 9 are sequentially arranged along the direction from one end to the other end of the shell, the electrode column 8 is provided with a plurality of paths of mutually independent electric connection terminal components, each path of electric connection terminal component at least comprises two electric connection contacts, the two electric connection contacts are electrically connected through the conductive component, an elastic piece is arranged between the conductive component and the electrode component, and when the temperature sensing body is triggered, the straight spring 7 is released from a compressed state so as to disconnect the two electric connection contacts of the plurality of paths.
In this embodiment, every way electric terminal subassembly includes two electrode posts 8 and electrode plug-in components 9 of relative parallel arrangement, electrode plug-in components are equipped with the shaft hole, electrode post 8 passes this shaft hole and fixes, and the tip of every electrode post all is equipped with a contact, electrically conductive subassembly includes the installing support and locates electrically conductive board on the installing support, two contacts on the electrode post are set up with the opposite both ends of electrically conductive board is relative respectively. The middle of the two pairs of electrode posts is combined with the electrode plug to form a groove, and the groove is opened towards the conductive component and is used for accommodating the straight spring 7. The number of the paths of the power-on terminal assemblies is two, and projection points of the four contacts in one direction are positioned at four vertex positions on the same diamond; the number of the conducting plates is two, and the two conducting plates are sequentially arranged on the mounting bracket along the direction from one end of the shell to the other end of the shell. In this embodiment, the conductive assembly 14 includes a mounting bracket, and a first conductive plate 141 and a second conductive plate 142 embedded on the mounting bracket, where the four contacts are a first contact 81, a second contact 82, a third contact 83, and a fourth contact 84, respectively.
In this embodiment, a cavity with an opening is formed inward at one end of the shell, which is close to the temperature sensing body, and the opening of the cavity is arranged towards the direction of the conductive component 14, and the cavity is used for accommodating the melted temperature sensing body, and the device further comprises a guiding spacer, wherein the guiding spacer comprises a disc 11, a disc 13 and a drum spring 12, the two discs are respectively placed at two ends of the drum spring 12, one end surface of the disc 13, which is far away from the drum spring, is in contact with the conductive component, and one end surface of the disc 11, which is far away from the drum spring, is in contact with the temperature sensing body 2.
In this embodiment, the straight spring 7 is fixedly connected with the electrode assembly 6, the opening of the case is swaged and the sealing resin 10 is applied, so that the inside is completely sealed, and the safety is increased.
Fig. 7 to 8 show the circuit in the conducting state when the fuse operates normally. It can be seen that one pole of the circuit is in contact with the first conductive plate 141 via the first contact 81, conducting to the second contact 82 opposite thereto, thereby communicating with the other pole of the circuit; similarly, the third 83 and fourth 84 contacts are connected by the second 142 conductive plate, and the circuit is thus open.
Fig. 9 to 10 show that when the temperature of the protected object exceeds the melting temperature of the temperature sensing body 2, the temperature sensing body melts, the straight spring 7 pushes the whole conductive component 14 to move towards the bottom of the housing, and finally the circuit is cut off. It can be seen that one pole of the circuit is separated from the first conductive plate 141 by the first contact 81 and cannot form a path with the second contact 82; similarly, the third contact 83 and the fourth contact 84 cannot be connected due to the separation of the second conductive plate 142, and the circuit is thus cut off.
In summary, the multi-path synchronous control temperature fuse provided by the invention changes the internal structure of the fuse on the basis of the traditional temperature fuse, the external circuit is connected with the electrode assembly by utilizing the conductive assembly, the multi-path circuit is connected through the multi-path mutually independent power connection terminal assembly, the temperature sensing body is used as a trigger component, and when the temperature sensing body is abnormal, the fuse is fused to cut off the multi-path circuit at the same time, so that the temperature sensing fuse is safer and more reliable to use.
The foregoing description is only illustrative of the present invention and is not intended to limit the scope of the invention, and all equivalent changes made by the specification and drawings of the present invention, or direct or indirect application in the relevant art, are included in the scope of the present invention.
Claims (7)
1. The temperature fuse comprises a shell, and a temperature sensing body, a conductive component and an electrode component which are respectively arranged in the shell, and is characterized in that the temperature sensing body, the conductive component and the electrode component are sequentially arranged along the direction from one end to the other end of the shell, the electrode component is provided with a plurality of mutually independent electric connection terminal components, each electric connection terminal component at least comprises two electric connection contacts, the two electric connection contacts are electrically connected through the conductive component, an elastic piece is arranged between the conductive component and the electrode component, and when the temperature sensing body is triggered, the elastic piece is released from a compressed state so as to disconnect the two electric connection contacts of the plurality of paths; each electric connection terminal assembly comprises two electrode plates which are oppositely arranged in parallel, two electric connection contacts are respectively arranged on the two electrode plates, each electric conduction assembly comprises a mounting bracket and an electric conduction ring sleeved on the surface of the mounting bracket, and the two electrode plates are respectively positioned on two opposite sides of the electric conduction ring; the number of the electric terminal assemblies is two, and projection points of the four electric contacts in one direction are positioned at four vertex positions on the same diamond; the number of the conducting rings is two, and the two conducting rings are sequentially sleeved on the surface of the mounting bracket along the direction from one end of the shell to the other end of the shell.
2. The multiple simultaneous control temperature fuse of claim 1 wherein the distance between the two conductive rings in one end of the housing to the other end is greater than the thickness of the temperature sensing body in the one end of the housing to the other end.
3. The multiple path synchronously controlled temperature fuse of claim 1, wherein the two electrical terminal assemblies are a first path electrical terminal assembly and a second path electrical terminal assembly, respectively, the first path electrical terminal assembly comprising a first electrical contact and a second electrical contact, the second path electrical terminal assembly comprising a third electrical contact and a fourth electrical contact;
The two conducting rings are respectively a first conducting ring and a second conducting ring;
The distance between the first electric contact and the second electric contact is matched with the distance between the two opposite ends of the first conductive ring, and the distance between the third electric contact and the fourth electric contact is matched with the distance between the two opposite ends of the second conductive ring.
4. The multi-channel synchronous control temperature fuse according to claim 1, further comprising a guide spacer, wherein the cross-section of the guide spacer is in a U shape, a through hole is formed in the bottom of the guide spacer corresponding to the U shape, one end of the conductive component is placed inside the guide spacer and is arranged corresponding to the inner surface of the bottom, the temperature sensing body is in contact with the outer surface of the bottom, an inner cavity is formed in one end of the conductive component, and an opening of the inner cavity is communicated with the temperature sensing body through the through hole.
5. The temperature fuse comprises a shell, and a temperature sensing body, a conductive component and an electrode component which are respectively arranged in the shell, and is characterized in that the temperature sensing body, the conductive component and the electrode component are sequentially arranged along the direction from one end to the other end of the shell, the electrode component is provided with a plurality of mutually independent electric connection terminal components, each electric connection terminal component at least comprises two electric connection contacts, the two electric connection contacts are electrically connected through the conductive component, an elastic piece is arranged between the conductive component and the electrode component, and when the temperature sensing body is triggered, the elastic piece is released from a compressed state so as to disconnect the two electric connection contacts of the plurality of paths; each electric terminal assembly comprises two electrode columns and electrode inserts which are arranged in parallel relatively, each electrode insert is provided with a shaft hole, each electrode column penetrates through each shaft hole and is fixed, each electrode column is provided with a contact at the end part, each conductive assembly comprises a mounting bracket and a conductive plate arranged on the mounting bracket, and the contacts on the two electrode columns are arranged relatively to the two opposite ends of the conductive plate respectively; the number of the paths of the power-on terminal assemblies is two, and projection points of the four contacts in one direction are positioned at four vertex positions on the same diamond; the number of the conducting plates is two, and the two conducting plates are sequentially arranged on the mounting bracket along the direction from one end of the shell to the other end of the shell.
6. The multi-channel synchronous control temperature fuse according to claim 5, wherein a cavity with an opening is formed inward at one end face of the housing, which is close to the temperature sensing body, the opening of the cavity is arranged towards the direction of the conductive component, a guide spacer is further arranged in the cavity, the guide spacer comprises two circular sheets and a drum spring, the two circular sheets are respectively arranged at two ends of the drum spring, one circular sheet is far away from one end face of the drum spring and is contacted with the conductive component, and the other circular sheet is far away from one end face of the drum spring and is contacted with the temperature sensing body.
7. The multi-channel synchronous control temperature fuse according to claim 1 or 5, wherein one end of the case corresponding to the electrode assembly has a case opening, and a sealing resin is applied at the case opening.
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| CN202110327379.7A CN113192806B (en) | 2021-03-26 | 2021-03-26 | Multi-channel synchronous control temperature fuse |
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| CN202110327379.7A CN113192806B (en) | 2021-03-26 | 2021-03-26 | Multi-channel synchronous control temperature fuse |
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| CN113192806B true CN113192806B (en) | 2024-06-18 |
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| WO2025013976A1 (en) * | 2023-07-13 | 2025-01-16 | 이종호 | Thermal fuse for high voltage direct current |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105869952A (en) * | 2016-06-15 | 2016-08-17 | 厦门赛尔特电子有限公司 | Bridge type contact structure temperature sensing switch |
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| JP2003317589A (en) * | 2002-04-24 | 2003-11-07 | Nec Schott Components Corp | Thermosensitive pellet type thermal fuse |
| CN103199502B (en) * | 2013-01-29 | 2015-08-26 | 厦门赛尔特电子有限公司 | A kind of circuit breaker initiatively cutting off circuit |
| CN103247498A (en) * | 2013-03-29 | 2013-08-14 | 厦门赛尔特电子有限公司 | Temperature fuse with double pawl spring leaves |
| CN111312568B (en) * | 2020-03-12 | 2024-11-08 | 厦门赛尔特电子股份有限公司 | A double circuit cut-off temperature fuse |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105869952A (en) * | 2016-06-15 | 2016-08-17 | 厦门赛尔特电子有限公司 | Bridge type contact structure temperature sensing switch |
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