CN210350767U - Double-fuse safety resistor - Google Patents
Double-fuse safety resistor Download PDFInfo
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- CN210350767U CN210350767U CN201921661860.4U CN201921661860U CN210350767U CN 210350767 U CN210350767 U CN 210350767U CN 201921661860 U CN201921661860 U CN 201921661860U CN 210350767 U CN210350767 U CN 210350767U
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- resistor
- fuse
- current
- indicator lamp
- circuit
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Abstract
The utility model discloses a double-fuse safety resistor, which comprises a resistor shell, a high current prompting circuit and a safety protection circuit, wherein the high current prompting circuit is connected with the safety protection circuit in parallel; the high current prompting circuit comprises a first resistor, a first fuse and a first current magnitude indicating lamp, wherein the first resistor is connected with the first current magnitude indicating lamp in parallel through a wire and then connected with the first fuse in series; the safety protection circuit comprises a second resistor, a second fuse and a second current magnitude indicator lamp; the second resistor is connected with the second current magnitude indicator lamp in parallel through a wire and then connected with the second fuse in series; the second resistor and the second fuse are positioned in the resistor shell. The utility model has the advantages that: simple structure is reliable and stable, can show the approximate proportion of current volume of flow at present, and the fuse can resume automatically, and the user can be reminded to change house circuit to current volume pilot lamp and No. two current volume pilot lamps, avoids the economic loss and the casualties that house outage or short circuit caused.
Description
Technical Field
The utility model belongs to the technical field of the fuse and specifically relates to a dual-fuse safety resistor is related to.
Background
In order to prevent such accidents, the circuit is usually provided with a protection device such as a fuse, an air switch and the like.
The existing house circuit generally cannot display the current magnitude, most of users do not know the magnitude of the current which can be borne by the house circuit and the current which can be used daily, along with more and more electric appliances, the users rarely check and update the house circuit, the hidden danger of house power failure or short circuit is generated, and the hidden danger can cause economic loss and casualty at any time.
SUMMERY OF THE UTILITY MODEL
The utility model discloses an it is not enough to overcome above-mentioned condition, aims at providing the technical scheme that can solve above-mentioned problem.
A double-fuse safety resistor comprises a resistor shell, a high-current prompt circuit and a safety protection circuit, wherein the high-current prompt circuit is connected with the safety protection circuit in parallel;
the high current prompting circuit comprises a first resistor, a first fuse and a first current magnitude indicating lamp, wherein the first resistor is connected with the first current magnitude indicating lamp in parallel through a wire and then connected with the first fuse in series; the first resistor and the first fuse are positioned in the resistor shell, and the first current magnitude indicator lamp is positioned outside the resistor shell;
the safety protection circuit comprises a second resistor, a second fuse and a second current magnitude indicator lamp; the second resistor is connected with the second current magnitude indicator lamp in parallel through a wire and then connected with the second fuse in series; the second resistor and the second fuse are positioned inside the resistor shell, and the second current magnitude indicator lamp is positioned outside the resistor shell.
As a further aspect of the present invention:
preferably, the two ends of the resistor shell are provided with wire connecting holes, and wires at the two ends respectively extend out of the wire connecting holes at the two ends of the resistor shell after the high-current prompting circuit and the safety protection circuit are connected in parallel; the two side walls of the resistor shell are provided with indicator lamp connecting holes, and a connecting lamp pin of the first current magnitude indicator lamp and a connecting lamp pin of the second current magnitude indicator lamp respectively extend out of the indicator lamp connecting holes in the two side walls of the resistor shell.
Preferably, the resistance value of the high current prompting circuit is equal to that of the safety protection circuit, and the current fusing value of the first fuse is 2/5 of the current fusing value of the second fuse.
Preferably, the indicator lights of the first current quantity indicator light and the second current quantity indicator light are red in color.
Preferably, a partition plate is arranged between the high-current prompt circuit and the safety protection circuit.
Preferably, the first fuse and the second fuse are both self-recovery fuses.
Compared with the prior art, the beneficial effects of the utility model are that: simple structure is reliable and stable, can show the approximate proportion of current volume of flow at present, and the fuse can resume automatically, and the user can be reminded to change house circuit to current volume pilot lamp and No. two current volume pilot lamps, avoids the economic loss and the casualties that house outage or short circuit caused.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.
Fig. 1 is a schematic structural diagram of the present invention.
In the figure: a resistor housing 1; a first resistor 2; a first fuse 3; a first current amount indicator lamp 4; a second resistor 5; a second fuse 6; a second current amount indicator lamp 7; a wire connection hole 8; an indicator lamp attachment hole 9; a partition plate 10.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely below, and it should be understood that the described embodiments are only some embodiments of the present invention, but 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.
Referring to fig. 1, in an embodiment of the present invention, a dual-fuse safety resistor includes a resistor housing 1, a high current prompting circuit and a safety protection circuit, where the high current prompting circuit and the safety protection circuit are connected in parallel;
the high current prompting circuit comprises a first resistor 2, a first fuse 3 and a first current magnitude indicator lamp 4, wherein the first resistor 2 is connected with the first current magnitude indicator lamp 4 in parallel through a wire and then connected with the first fuse 3 in series; the first resistor 2 and the first fuse 3 are positioned inside the resistor shell 1, and the first current magnitude indicator lamp 4 is positioned outside the resistor shell 1;
the safety protection circuit comprises a second resistor 5, a second fuse 6 and a second current magnitude indicator lamp 7; the second resistor 5 is firstly connected with the second current magnitude indicator lamp 7 in parallel through a wire and then connected with the second fuse 6 in series; the second resistor 5 and the second fuse 6 are positioned inside the resistor shell 1, and the second current quantity indicator lamp 7 is positioned outside the resistor shell 1.
Two ends of the resistor shell 1 are provided with wire connecting holes 8, and wires at two ends respectively extend out of the wire connecting holes 8 at two ends of the resistor shell 1 after the high-current prompting circuit and the safety protection circuit are connected in parallel; both side walls of the resistor housing 1 are provided with indicator lamp connecting holes 9, and a connecting lamp pin of the first current magnitude indicator lamp 4 and a connecting lamp pin of the second current magnitude indicator lamp 7 respectively extend out of the indicator lamp connecting holes 9 on both side walls of the resistor housing 1.
The resistance value of the high current prompting circuit is equal to that of the safety protection circuit, and the current fusing value of the first fuse 3 is 2/5 of the current fusing value of the second fuse 6.
The indicator lights of the first current quantity indicator light 4 and the second current quantity indicator light 7 are red in color.
And a partition plate 10 is arranged between the high-current prompt circuit and the safety protection circuit.
The first fuse 3 and the second fuse 6 are both self-recovery fuses.
The utility model discloses a theory of operation:
after the installation is finished, a high current prompt circuit and a safety protection circuit in the resistor shell 1 divide the current one by one; when the current does not exceed 80% of the maximum current, the first current magnitude indicator lamp 4 and the second current magnitude indicator lamp 7 are turned on; when the current exceeds 80% of the maximum current, the first fuse 3 is disconnected, the first current quantity indicator lamp 4 is extinguished, and the second current quantity indicator lamp 7 is lightened; when the current exceeds the maximum current value, the first fuse 3 and the second fuse 6 are sequentially disconnected, and the first current magnitude indicator lamp 4 and the second current magnitude indicator lamp 7 are sequentially extinguished; since the first fuse 3 and the second fuse 6 are both self-recovery fuses, the first fuse 3 and the second fuse 6 can be automatically recovered after being disconnected.
It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Claims (6)
1. A double-fuse safety resistor is characterized by comprising a resistor shell, a high-current prompting circuit and a safety protection circuit, wherein the high-current prompting circuit is connected with the safety protection circuit in parallel;
the high current prompting circuit comprises a first resistor, a first fuse and a first current magnitude indicating lamp, wherein the first resistor is connected with the first current magnitude indicating lamp in parallel through a wire and then connected with the first fuse in series; the first resistor and the first fuse are positioned in the resistor shell, and the first current magnitude indicator lamp is positioned outside the resistor shell;
the safety protection circuit comprises a second resistor, a second fuse and a second current magnitude indicator lamp; the second resistor is connected with the second current magnitude indicator lamp in parallel through a wire and then connected with the second fuse in series; the second resistor and the second fuse are positioned inside the resistor shell, and the second current magnitude indicator lamp is positioned outside the resistor shell.
2. The dual-fuse safety resistor as claimed in claim 1, wherein the resistor housing has wire connection holes at both ends thereof, and the wires at both ends extend out of the wire connection holes at both ends of the resistor housing respectively after the high current prompting circuit and the safety protection circuit are connected in parallel; the two side walls of the resistor shell are provided with indicator lamp connecting holes, and a connecting lamp pin of the first current magnitude indicator lamp and a connecting lamp pin of the second current magnitude indicator lamp respectively extend out of the indicator lamp connecting holes in the two side walls of the resistor shell.
3. The dual-fuse safety resistor of claim 1, wherein the high current prompting circuit has a resistance equal to that of the safety protection circuit, and the fuse I has a fusing current value of 2/5 that is the fusing current value of the fuse II.
4. The dual-fuse safety resistor of claim 1, wherein the first and second current indicator lights are red in color.
5. The dual-fuse safety resistor of claim 1, wherein a divider is disposed between the high current prompting circuit and the safety protection circuit.
6. A dual fuse safety resistor according to claim 1 wherein the first fuse and the second fuse are self-healing fuses.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921661860.4U CN210350767U (en) | 2019-10-08 | 2019-10-08 | Double-fuse safety resistor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921661860.4U CN210350767U (en) | 2019-10-08 | 2019-10-08 | Double-fuse safety resistor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210350767U true CN210350767U (en) | 2020-04-17 |
Family
ID=70178273
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921661860.4U Expired - Fee Related CN210350767U (en) | 2019-10-08 | 2019-10-08 | Double-fuse safety resistor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210350767U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115483076A (en) * | 2021-06-16 | 2022-12-16 | 南京泉峰科技有限公司 | Fuse device suitable for battery pack, battery pack and electric tool |
-
2019
- 2019-10-08 CN CN201921661860.4U patent/CN210350767U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115483076A (en) * | 2021-06-16 | 2022-12-16 | 南京泉峰科技有限公司 | Fuse device suitable for battery pack, battery pack and electric tool |
| CN115483076B (en) * | 2021-06-16 | 2024-01-19 | 南京泉峰科技有限公司 | Fuse device suitable for battery pack, battery pack and electric tool |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200417 Termination date: 20211008 |
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| CF01 | Termination of patent right due to non-payment of annual fee |