CN211957592U - Coupler capable of quickly disconnecting circuit due to overheating - Google Patents
Coupler capable of quickly disconnecting circuit due to overheating Download PDFInfo
- Publication number
- CN211957592U CN211957592U CN202020767759.3U CN202020767759U CN211957592U CN 211957592 U CN211957592 U CN 211957592U CN 202020767759 U CN202020767759 U CN 202020767759U CN 211957592 U CN211957592 U CN 211957592U
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- movable rod
- base
- fuse
- coupler
- fusing
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Abstract
The utility model provides an overheated coupler that can break off circuit fast, including the coupler base, multipolar conductive ring, a plurality of binding post, hot bimetallic strip and fixed plate, each binding post is fixed on the coupler base, be connected through the metal shrapnel electricity between binding post and the conductive ring, at least one of them binding post and the metal shrapnel between offset through fusing subassembly and switch on, fusing subassembly includes the base, the movable rod, the dead lever, top pushing part and fuse, fuse pegs graft on the movable rod, the movable rod cup joints with the dead lever, top pushing part one end acts on the movable rod, the other end acts on the base bottom, and exert the thrust to metal shrapnel direction potential energy to the movable rod. The utility model discloses replace a fusing pole that has now into the fusing subassembly for the fuse-link can be done very little, not only can practice thrift cost of maintenance, simultaneously because the fuse-link is less with receiving a heating element area of contact minor diameter, the fusing is rapider, thereby realizes the quick disconnected effect of branch of circuit.
Description
Technical Field
The utility model belongs to the technical field of the coupler, especially, relate to a coupler with overheat protection.
Background
The common overheat protection coupler in the market at present only realizes the circuit breaking through the double-gold-piece to protect the circuit, and the applicant previously applied a weight meshing type coupler with overheat protection, wherein a connecting terminal and a metal elastic piece in the coupler are in butt conduction through a fusing part, and the metal elastic piece is separated from the connecting terminal to break the circuit under the condition that the metal elastic piece loses the top pressure of a fusing rod. Because the circuit can often produce the high temperature condition, lead to the fuse-link to often damage and need change, and this fuse-link is because length is long, the diameter is big, and the cost is higher, leads to the fuse-link to melt fast owing to its big holding power of diameter is strong moreover to cause the damage to the circuit.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a coupler that overheated can the quick break-off circuit is provided.
The utility model discloses a realize through following technical scheme:
a coupler capable of quickly breaking a circuit by overheating comprises a coupler base, a multi-pole conductive ring arranged in the base, a plurality of wiring terminals, a thermal bimetallic strip and a fixing plate, wherein each wiring terminal is fixed on the coupler base, the wiring terminals are electrically connected with the conductive ring through metal elastic pieces, at least one wiring terminal is abutted and conducted with the metal elastic pieces through a fusing component, when the metal elastic sheet loses the jacking force of the fusing component, the metal elastic sheet is separated from the wiring terminal to disconnect the circuit, the fusing component comprises a base with an opening at one end, a movable rod which moves relative to the base, a fixed rod fixed on the base, a pushing piece pushing the movable rod and a fusing piece fused by heating, the fusing piece is inserted on the movable rod, the movable rod is sleeved with the fixed rod, one end of the pushing piece acts on the movable rod, the other end of the pushing piece acts on the bottom of the base, and pushing force to potential energy in the direction of the metal elastic piece is applied to the movable rod.
The fusing component is integrally fixed on the base of the coupler.
The movable rod limiting device is characterized by further comprising an upper cover, the upper cover is detachably connected with the base, a hole groove for the fuse to pass through is formed in the upper cover, the end portion of the fuse protrudes out of the outer surface of the upper cover after the fuse is installed, a limiting portion for limiting the movable rod to slide out of the base is formed around the hole groove of the upper cover, and the movement range of the movable rod is limited through the limiting portion.
The upper cover is in threaded connection with the base.
The fuse-link be a member, adopt PA66 nylon material to make.
The movable rod is provided with a slot for local insertion of the fuse-link, and the fuse-link is matched with the movable rod in an inserting way.
The utility model has the advantages that: the utility model discloses replace a fusing pole that has now into fusing subassembly for the fuse-link can be done very little, not only can practice thrift cost of maintenance, simultaneously because the utility model discloses a fuse-link is less with receiving a heating element area of contact minor diameter, and the fusing is rapider, thereby realizes the quick disconnected effect of branch of circuit.
Drawings
Fig. 1 is a perspective view of the present invention;
fig. 2 is a perspective view of another perspective of the present invention;
FIG. 3 is a cross-sectional view of a fuse assembly.
Detailed Description
The present invention will be further described with reference to the following examples.
Examples
As shown in fig. 1-3, the coupler capable of quickly breaking a circuit due to overheating includes a coupler base 1, a multi-pole conductive ring 2 disposed in the base 1, a plurality of terminals 3, a thermal bimetal 4 and a fixing plate 5, where the above coupler components are the prior art and will not be described in detail herein, in this embodiment, the conductive ring 2 is 3 poles, each terminal 3 is fixed on the coupler base 1, the terminals 3 are electrically connected with the conductive ring 2 through metal elastic pieces 6, at least one of the terminals 3 is in contact with the metal elastic pieces 6 through a fuse component 7, when the metal elastic pieces 6 lose the pressing force of the fuse component 7, the metal elastic pieces 6 and the terminals 3 separate and break the circuit, and the fuse component 7 includes a base 71 with an opening at one end, a movable rod 72 movable relative to the base 71, and a fixing rod 73 fixed on the base 71, The pushing piece 74 pushing the movable rod 72 and the fuse piece 75 fused by heating, the fuse piece 75 is inserted on the movable rod 72, the movable rod 72 is sleeved with the fixed rod 73, one end of the pushing piece 74 acts on the movable rod 72, the other end acts on the bottom of the base 71, and pushing force of potential energy in the direction of the metal elastic sheet 6 is applied to the movable rod 72. The ejector 74 in this embodiment is a spring. The spring is sleeved outside the movable rod 72 and the fixed rod 73, the upper end of the movable rod 72 is provided with an extension part 721 extending in the radial direction, the spring is abutted against the extension part 721, the fixed rod 73 is fixed on the bottom surface of the base 71 in the embodiment, the movable rod 72 is sleeved outside the fixed rod 73, and a certain space for embedding the fixed rod 73 is arranged in the movable rod 72, so that the movable rod 72 can move on the fixed rod 73 at a certain distance.
In the present embodiment, the fuse unit 7 is integrally fixed to the base 1 of the coupler, or may be fixed to the fixing plate 5.
In order to limit the movable rod 72 to slide out of the base 71, the movable rod 72 further comprises an upper cover 76 in the embodiment, the upper cover 76 is detachably connected with the base 71, the movable rod 72 is in threaded connection in the embodiment, namely, an internal thread is arranged on the inner wall of the upper cover 76, an external thread is arranged outside the upper end of the base 71, the upper cover 76 is in threaded fit with the external thread, a hole groove for the fuse 75 to pass through is formed in the upper cover 76, the end of the fuse 75 protrudes out of the outer surface of the upper cover 76 after the fuse 75 is installed, a limiting portion 761 for limiting the movable rod 72 to slide out of the base 71 is formed around the hole groove of the upper cover 76, and. The limiting part 761 can prevent the movable rod 72 from slipping out, and the extending part 721 of the movable rod 72 can collide with the limiting part 761 after the fuse element 75 is fused, and the collision can make a sound, so as to remind a user that the fuse element 75 is fused and a line may break down.
In this embodiment, in order to save the cost of the fuse element 75, the fuse element 75 is a rod made of PA66 nylon. The fuse element 75 in this embodiment is about 1 mm in diameter and about 2 mm in length. Original fuse-link 75 diameter is five six millimeters, and there is about one centimetre length, because fuse-link 75 has reduced a lot in this embodiment and makes fuse-link 75 fuse more easily to reduced the fusing time, moreover because fuse-link 75 length shortens, it can prop up metal shrapnel 6 as usual.
In order to facilitate replacement of the fuse element 75, the movable rod 72 is provided with a slot for local insertion of the fuse element 75, and the fuse element 75 is in insertion fit with the movable rod 72. When the fuse element 75 needs to be replaced, only the fuse element 75 which is fused is required to be cleaned, and then a new fuse element 75 is inserted, so that the replacement is convenient and quick.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only illustrative of the principles of the present invention, and that simple modifications and substitutions by those skilled in the art are within the scope of the present invention without departing from the spirit and scope of the present invention.
Claims (6)
1. The utility model provides an overheated coupler that can break off circuit fast, including the coupler base, locate the multipolar conductive ring in the base, a plurality of binding post, hot bimetallic strip and fixed plate, each binding post is fixed on the coupler base, be connected through the metal shrapnel electricity between binding post and the conductive ring, at least one of them binding post and the metal shrapnel between offset and switch on through fusing subassembly, metal shrapnel and binding post separation open circuit under the metal shrapnel loses fusing subassembly top pressure condition, its characterized in that: the fusing component comprises a base with an opening at one end, a movable rod which moves relative to the base, a fixed rod fixed on the base, a pushing piece pushing the movable rod and a fusing piece fused by heating, the fusing piece is inserted on the movable rod, the movable rod is sleeved with the fixed rod, one end of the pushing piece acts on the movable rod, the other end of the pushing piece acts on the bottom of the base, and pushing force to potential energy in the direction of the metal elastic piece is applied to the movable rod.
2. A coupler capable of quickly breaking a circuit upon overheating as claimed in claim 1, wherein: the fusing component is integrally fixed on the base of the coupler.
3. A coupler capable of quickly breaking a circuit by overheating as claimed in claim 1 or 2, wherein: the movable rod limiting device is characterized by further comprising an upper cover, the upper cover is detachably connected with the base, a hole groove for the fuse to pass through is formed in the upper cover, the end portion of the fuse protrudes out of the outer surface of the upper cover after the fuse is installed, a limiting portion for limiting the movable rod to slide out of the base is formed around the hole groove of the upper cover, and the movement range of the movable rod is limited through the limiting portion.
4. A coupler capable of quickly breaking a circuit by overheating as claimed in claim 3, wherein: the upper cover is in threaded connection with the base.
5. A coupler capable of quickly breaking a circuit by overheating as claimed in claim 3, wherein: the fuse-link be a member, adopt PA66 nylon material to make.
6. A coupler capable of quickly breaking a circuit upon overheating as claimed in claim 5, wherein: the movable rod is provided with a slot for local insertion of the fuse-link, and the fuse-link is matched with the movable rod in an inserting way.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020767759.3U CN211957592U (en) | 2020-05-11 | 2020-05-11 | Coupler capable of quickly disconnecting circuit due to overheating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020767759.3U CN211957592U (en) | 2020-05-11 | 2020-05-11 | Coupler capable of quickly disconnecting circuit due to overheating |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211957592U true CN211957592U (en) | 2020-11-17 |
Family
ID=73170481
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020767759.3U Active CN211957592U (en) | 2020-05-11 | 2020-05-11 | Coupler capable of quickly disconnecting circuit due to overheating |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211957592U (en) |
-
2020
- 2020-05-11 CN CN202020767759.3U patent/CN211957592U/en active Active
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