CN200986908Y - Safety disconnect terminal unit with illuminated indication - Google Patents

Abstract

The utility model discloses a safe outage formula terminal device with luminous instruction, it includes: the top surface of the outer shell is provided with two detection ports and a light transmission part, and the bottom surface of the outer shell is provided with an opening; an end pin which is arranged in the shell body through the opening part and consists of two metal guide sheets which are arranged in parallel, a fuse is connected between the two metal guide sheets, the upper ends of the two metal guide sheets are respectively provided with an end part which enters the two detection ports, and an L-shaped frame with a free end facing upwards extends outwards from the inner side edge close to the upper ends of the two metal guide sheets; a light emitter arranged in the light transmission part, and two electrodes of the light emitter are respectively contacted with the two L-shaped frames; therefore, the assembly speed can be increased, and the manufacturing cost can be reduced.

Description

Safety disconnect terminal unit with illuminated indication

technical field

The utility model relates to a safe power-off type terminal device, in particular to a safe power-off type terminal device with light-emitting indication which can achieve faster assembly speed and reduce manufacturing cost.

Background technique

Please refer to FIG. 1 , which is an exploded view of a conventional fuse terminal with a light-emitting indicator. As shown in the figure, it contains:

An outer casing 1, the top and bottom of which respectively have a communicating opening 11;

One end pin 2, which is composed of two parallel metal guides 21, a fuse 22 is connected between the two metal guides 21, the upper end 23 of the metal guide 21 is cut with an end 24, and on the upper end of the metal guide 21 The inner side of 23 extends outwards with an L-shaped frame 25 with its free end facing upwards;

An upper cover 3, which is a transparent body, can cover the opening 11 on the top surface of the outer casing 1 correspondingly, and the upper cover 3 has two detection ports 31;

A light emitter 4 is connected across the two L-shaped frames 25 of the end pins 2. The light emitter 4 first connects two light-emitting diodes in parallel and then packages them so that two external contacts are formed on its surface.

Please refer to FIG. 2 , which is a structural combination diagram of a known fuse terminal with luminous indication. As shown in the figure, the end pin 2 can be inserted into the top opening 11 of the outer shell 1 and fastened in the outer shell 1 so that the upper and lower ends of the end pin 2 protrude from the outer shell 1. After the two L-shaped frames 25 of the foot 2 are connected to a light emitter 4, the upper cover 3 can be correspondingly covered with the opening 11 on the top surface of the outer casing 1, and the two ends 24 of the end foot 2 can be placed in a corresponding position. into the detection port 31 of the upper cover 3; through the above-mentioned known composition and structure, we can easily find that the known fuse terminals with luminous indications need to open two complicated molds to manufacture the upper cover 3 and the outer shell 1 respectively. , which means that the manufacturing cost is increased, and the light emitter 4 needs to be welded on the terminal pin 2 before the light emitter 4 can be fixed during assembly.

Please refer to FIG. 3 , which is an equivalent circuit diagram of a known fuse terminal with a light-emitting indicator. As shown in the figure, the light emitter 7 is composed of two light-emitting diodes 73 connected in reverse parallel and then connected in series with a resistor 74. When the fuse is damaged, the current will choose the light-emitting diode in the same direction as the current flow to pass through, making it light up. However, Since two light-emitting diodes 73 are connected in antiparallel, the overall volume of the light-emitting device 7 is not easily reduced.

Therefore, how to create a safe power-off type terminal device with luminous indication, so as to speed up the assembly speed, increase the identification rate of faulty fuses during power-off, and reduce the manufacturing cost will be actively explored by the present invention.

In view of the shortcomings of the above-mentioned known fuse terminals, the designer felt that it was not perfect, so he tried his best to study and overcome it. With his accumulated experience in this industry for many years, he developed a new type that can speed up the assembly speed. , And reduce the manufacturing cost of the safe power-off terminal device with luminous indication.

Utility model content

The technical problem to be solved by the utility model is to provide a safe power-off type terminal device with luminous indication, which can speed up the assembly speed and reduce the manufacturing cost.

The technical solution of the utility model is: a safe power-off terminal device with luminous indication, which includes:

An outer casing, the top surface of which is provided with two detection ports and a light-transmitting part, and the bottom surface of the outer casing is provided with an opening;

One end leg, which is set in the outer shell through the opening part, the end leg is composed of two metal guides arranged in parallel, a fuse is connected between the two metal guides, and the upper ends of the two metal guides are respectively provided with the two detection One end of the opening, and an L-shaped frame with a free end facing upwards extends outwards on the inner sides close to the upper ends of the two metal guides;

a light emitter, which is arranged in the light-transmitting part, and the two electrodes of the light emitter are respectively in contact with the two L-shaped frames;

Among them, the light emitter is a kind of two conductive layers with different polarities formed on the wafer, so that the light emitter does not need to distinguish the positive and negative poles and connects with other loads, and keeps a conductive layer in a conductive state at any time. One end of the two voltage-dividing resistors of the light emitter is respectively connected to the two metal guides, and the end pins are set to a load or a power supply. When the current exceeds a rated value, the fuse burns to create an open circuit, forcing the current to pass through the light emitter. Makes this emitter glow.

As mentioned above, the safe power-off terminal device with luminous indication, wherein the illuminator is a SMD (Surface Mount Device) bipolar light-emitting diode (BIPOLAR LED).

In the above-mentioned safe power-off terminal device with luminous indication, the shape of the light-transmitting portion is an arc surface protruding outward from the top surface of the outer casing.

The features and advantages of this utility model are: the safety power-off type terminal device with light-emitting indication of the utility model, the top surface of the outer casing is provided with two detection ports and a light-transmitting part, and the light emitter is a kind of on-wafer Two conductive layers with different polarities are generated, so that the light emitter does not need to distinguish between positive and negative poles and connects to other loads, and keeps a conductive layer in a conductive state at any time. One end of the two voltage divider resistors of the light emitter is respectively connected to The two metal guide strips are connected, and the terminal pin is set on a load or a power supply. When the current exceeds a rated value, the fuse burns to generate an open circuit, forcing the current to pass through the light emitter, so that the light emitter emits light. Thereby, the effect of speeding up the assembly speed and reducing the manufacturing cost can be achieved.

Description of drawings

FIG. 1 is an exploded view of the structure of a conventional fuse terminal with a light-emitting indicator.

Fig. 2 is a structural combination diagram of a conventional fuse terminal with a light-emitting indicator.

Fig. 3 is an equivalent circuit diagram of a conventional fuse terminal with a light-emitting indicator.

Figure 4 is an exploded view of the structure of the utility model.

Fig. 5 is a structural combination diagram of the present utility model.

Fig. 6 is an equivalent circuit diagram of the utility model.

Description of main component symbols:

1...........Outer shell 11.......Opening

2...........End foot 21......Metal guide piece

22...........Fuses 23.......Upper end

24.............End 25.........L-shaped frame

3............Top cover 31........Detection port

4............Illuminator 5.......Outer shell

51.....Detection port 53.....Light-transmitting part

6...........Terminal foot 61......Metal guide piece

62.....Fuses 63.....Terminal

64...........L-shaped frame 7............Illuminator

71..Bipolar Light Emitting Diode 72...Divider resistor

73......LED 74..........Resistor

8........Load 9........Power

Detailed ways

In order to fully understand the technical solutions, features and effects of the present utility model, the utility model will be described in detail through the following specific embodiments in conjunction with the accompanying drawings, as follows.

Please refer to Fig. 4, which is an exploded view of the structure of the utility model. As shown in the figure, it contains:

An outer casing 5 formed by integral molding has two detection ports 51 and a light-transmitting portion 53 on its top surface, and an opening on the bottom surface of the outer casing 5;

One end pin 6 is arranged in the outer casing 5 through the opening part. The end pin 6 is composed of two metal guide pieces 61 arranged in parallel. A fuse 62 is connected between the two metal guide pieces 61. The upper ends of the two metal guide pieces 61 are respectively provided with Enter one end 63 of the two detection ports 51, and extend outwards on the inner sides close to the upper ends of the two metal guide strips 61, respectively, with an L-shaped frame 64 with a free end facing upwards;

A light emitter 7, which is located in the light-transmitting part 53, because the shape of the light-transmitting part 53 is that an arc protruding from the top surface of the outer casing 5 has a light-gathering effect, thereby making the light emitted by the light-emitting device 7 transparent. Passing through the curved surface can be more obvious, and the two electrodes of the light emitter 7 are in contact with the two L-shaped frames respectively.

Please refer to Fig. 5, which is a structural combination diagram of the present utility model. As shown in the figure, the light emitter 7 is correspondingly inserted into the light-transmitting portion 53 of the outer casing 5, and then the upper end of the end pin 6 can be inserted and fixed through the bottom opening of the outer casing 5, and the end 63 of the upper end of the two metal guide pieces 62 Corresponding to the two detection openings 51 entering the outer housing 5 respectively, the light-transmitting portion 53 is simultaneously pressed tightly to engage the light emitter 7 with the L-shaped frame 64 .

Furthermore, please refer to FIG. 6 , which is an equivalent circuit diagram of the present invention. As shown in the figure, the light emitter 7 (for example: SMD (Surface Mount Device) bipolar light emitting diode 71 (BIPOLAR LED), but not limited to this), is composed of bipolar light emitting diode 71 and connected in series before and after bipolar light emitting diode 71 The voltage dividing resistor 72 at the terminal is formed, wherein, the light emitter 7 (for example: SMD bipolar light emitting diode 71 (BIPOLAR LED), but not limited to this) is a kind of two conductive layers with different polarities generated on the wafer, The light emitter 7 can be connected with other loads without distinguishing the positive and negative contacts, and maintain a conductive layer at any time, and one end of the two voltage dividing resistors 72 is connected to the two metal guide strips 62 respectively. 6 can be set between the load 8 or the power supply 9, once the current exceeds a certain rated value, the fuse 62 will be burned to create an open circuit, forcing the current to pass through the light emitter 7, and when the light emitter 7 has current passing through, it will emit light to inform repair personnel The circuit structure of this section is abnormal.

Through the structure of the utility model, the cost of the mold can be greatly reduced, and the welding process of the light emitter 7 and the terminal pin 6 can be omitted during assembly, which can indeed achieve the effect of speeding up the assembly speed and reducing the manufacturing cost.

Claims (3)

1. A safe power-off terminal device with luminous indication, characterized in that it includes: An outer casing, the top surface of which is provided with two detection ports and a light-transmitting part, and the bottom surface of the outer casing is provided with an opening; One end leg, which is set in the outer shell through the opening part, the end leg is composed of two metal guides arranged in parallel, a fuse is connected between the two metal guides, and the upper ends of the two metal guides are respectively provided with the two detection One end of the opening, and an L-shaped frame with a free end facing upwards extends outwards on the inner sides close to the upper ends of the two metal guides; a light emitter, which is arranged in the light-transmitting part, and the two electrodes of the light emitter are respectively in contact with the two L-shaped frames; Among them, the light emitter is a kind of two conductive layers with different polarities formed on the wafer. The light emitter does not need to distinguish the positive and negative poles from connecting with other loads, and keeps one conductive layer in a conduction state at any time. The light emitter One end of the two voltage-dividing resistors is respectively connected to the two metal guide pieces, and the end pins are set to a load or a power supply. 2. The safe power-off terminal device with light indication according to claim 1, wherein the light emitter is an SMD bipolar light emitting diode. 3 . The safe power-off terminal device with light indication according to claim 1 , wherein the shape of the light-transmitting portion is an arc protruding outward from the top surface of the outer casing. 4 .

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