CN201041800Y - Power circuit protection device - Google Patents

Abstract

A power circuit protection device comprises a connecting shell, a first terminal, a second terminal and a safety sheet; the connecting shell comprises a bottom shell and an upper cover; the bottom shell comprises a body, wherein the left end edge and the right end edge of one side of the body are respectively provided with a side wall, the other side of the body is provided with a containing groove, the left end and the right end of the bottom shell are respectively provided with a positioning column, and the left end and the right end of the top end edge of the body are respectively provided with a notch; the upper cover comprises a body, the left end edge and the right end edge of one side of the body are respectively provided with a side wall which is connected with the side wall of the bottom shell through a corresponding buckle, the other side of the body is provided with a containing groove, and the left end edge and the right end edge of the top end of the body are provided with two notches corresponding to the two notches of the base; the containing groove of the bottom shell is connected with the containing groove of the upper cover; the first terminal and the second terminal are arranged at the tail ends of the two power lines, and are respectively provided with a positioning hole and a jack; the fuse piece comprises a first pole column, a second pole column and a fuse, the same ends of the first pole column and the second pole column are respectively provided with a corresponding insertion part inserted into the two insertion holes, and the fuse is connected between the first pole column and the second pole column.

Description

Power circuit protection device

technical field

The utility model relates to a power supply circuit protection device, in particular to a power supply circuit protection device connected on a power supply line to prevent electric appliances from being damaged by excessive current.

Background technique

Most of the traditional power supply circuits do not have a current protection device for one or several electrical appliances. In reality, many precision equipment have higher requirements for current protection, and some have more personalized requirements. Generally, an office or workshop only There is a general fuse, such protection is often not enough, which is not conducive to better protection of electrical safety.

Contents of the invention

The purpose of the utility model is to provide a power supply circuit protection device connected to the power supply line to prevent electric appliances from being damaged by excessive current.

In order to achieve the above purpose, the utility model provides a power supply circuit protection device, which includes a connection case, a first terminal, a second terminal and a safety piece; the connection case includes a bottom case and an upper cover; the bottom The shell includes a body, the left and right ends of one side of the body are respectively provided with side walls, the other side of the body is provided with a storage tank for placing wire rods, the left and right ends of the bottom shell are respectively provided with a positioning column, and the top edge of the body A gap is opened at the left and right ends; the upper cover includes a body, the left and right ends of one side of the body are respectively provided with a corresponding buckle to connect the side wall of the bottom shell side wall, and the other side of the body is provided with a wire rod The two notches on the left and right ends of the top edge of the body correspond to the two notches on the base; the bottom shell and the upper cover are connected between the two notches; the first terminal and the second terminal are respectively mounted on The ends of the two power cords are respectively provided with a positioning hole and a socket; the insurance sheet includes a first pole, a second pole, and a fuse, and the same pole of the first pole and the second pole The ends are respectively provided with inserting parts correspondingly inserted into the two sockets, and the fuse is connected between the first pole and the second pole.

The utility model has the following beneficial effects: in the utility model, two insulated wires are respectively installed at the left and right ends of the connection shell, and are separated by spacers so that the first terminal and the second terminal cannot be directly contacted and conduct electricity. The fuse with the fuse makes the two insulated wires electrically conductive, but when the current exceeds the specified size, the fuse is blown and the power is cut off to prevent damage to the electrical appliance and ensure the safety of the circuit.

Description of drawings

Fig. 1 is a three-dimensional exploded view of the power circuit protection device of the present invention.

Fig. 2 is a perspective view of the first terminal and the second terminal of the power circuit protection device of the present invention installed on the connecting shell.

FIG. 3 is a top view of FIG. 2 .

Fig. 4 is a three-dimensional combined view of the power supply circuit protection device of the present invention.

Detailed ways

Please refer to FIG. 1 to FIG. 4 , a power supply circuit protection device includes a connection shell 1 , a first terminal 2 , a second terminal 3 and a safety plate 4 .

The connection case 1 includes a bottom case 12 and a top cover 14 made of insulating plastic material.

The bottom shell 12 includes a flat body 122 . The left and right ends of the body 122 are vertically bent upwards to define sidewalls 124 . Each sidewall 124 defines a locking hole 126 . The other side of the main body 122 bends downwards and then extends upwards to form a semicircular receptacle 128 for placing wires. A spacer bar 130 is disposed in the middle of the bottom case 12 , and the spacer bar 130 passes through the body 122 and the container 128 . The bottom shell 12 is provided with a pair of parallel positioning posts 132 on both sides of the spacer bar 130 . The left and right ends of the top edge of the main body 122 respectively define a rectangular gap (not marked) on both sides of the spacer 130 .

The upper cover 14 includes a flat body 142 , the left and right ends of one side of the body 142 are vertically bent upwards and extend to form a side wall 144 corresponding to the side wall 124 of the bottom case 12 , the side wall 144 When inserted into the side wall 124, the distance between the two is relatively close, and they are basically stuck together. Each side wall 144 defines a locking block 146 corresponding to the locking hole 126 of the bottom case 12 . The other side of the main body 142 bends downwards and then extends upwards to form a semicircular receptacle 148 for placing wires. A spacer bar 150 is disposed at a middle position of the upper cover 14 corresponding to the spacer bar 130 of the bottom case 12 , and the spacer bar 150 passes through the main body 142 and the cavity 148 . The left and right ends of the top edge of the main body 142 define two rectangular notches (not labeled) on both sides of the spacer bar 150 corresponding to the two notches of the base 12 .

Five connecting ribs 154 are arranged between the edge of the container groove 128 of the bottom case 12 and the edge of the container container 148 of the upper cover 14 , and these connecting ribs 154 connect the bottom case 12 and the upper cover 14 .

The upper cover 14 can be flipped on the bottom shell 12, the two side walls 144 are correspondingly inserted into the inner sides of the two side walls 124 of the bottom shell 12, the distance between them is relatively close, and the two clamping blocks 146 are correspondingly inserted into In the two clamping holes 126, and because the side wall 144 and the side wall 124 are made of plastic material and have elasticity, after the clamping block 146 is inserted, the connection between the upper cover 14 and the bottom case 12 is relatively tight, and it is not easy to slip off. . After the loam cake 14 and the bottom case 12 are snapped together, the accommodating groove 128 of the bottom case 12 and the accommodating groove 148 of the loam cake 14 are spliced into an accommodating groove (not labeled) of a circular section, so the power cord can be removed from the The accommodating groove penetrates into the connection shell 1 . The notch of the upper cover 14 and the notch of the bottom case 12 are spliced to form a through hole 156 .

The first terminal 2 is mounted on the end of a first power cord 5 , a positioning hole 22 is defined in the middle thereof, and an insertion hole 24 is defined at the top corresponding to one of the through holes 156 .

The second terminal 3 is mounted on the end of a second power cord 6 , a positioning hole 32 is defined in the middle, and an insertion hole 34 is defined in the top corresponding to another through hole 156 .

The safety sheet 4 includes a transparent shell 42 made of plastic material, a first pole 44 , a second pole 46 , and a fuse 48 .

The same ends of the first pole 44 and the second pole 46 are respectively provided with a socket portion 442 .

The fuse 48 is connected between the first pole 44 and the second pole 46 .

The first pole 44 and the second pole 46 are respectively installed at two ends of the shell 42 , and the two insertion parts 442 extend out of the shell 42 .

During installation, the first terminal 2 and the second terminal 3 are respectively connected to the ends of the first power line 5 and the second power line 6; then the first terminal 2 is placed in the bottom case 12, so that the bottom The positioning column 132 on the left side of the shell 12 is correspondingly snapped into the positioning hole 22 of the first terminal 2, the first power cord 5 is drawn out from the left end of the cavity 128 of the bottom shell 12, and the second terminal 3 is placed on the bottom In the shell 12, the positioning column 132 on the right side of the bottom shell 12 is correspondingly snapped into the positioning hole 32 of the second terminal 3, and the second power line 6 is drawn out from the right end of the container groove 128 of the bottom shell 12; then, the The upper cover 14 is turned over to cover the bottom case 1, and the two clamping blocks 146 of the upper cover 14 are correspondingly snapped into the two clamping holes 126 of the bottom case 12, and the first terminal 2 and The second terminal 3 is clamped in the connection shell 1; then the safety piece 4 is inserted into the connection shell 1, so that the two insertion parts 442 of the first pole 44 and the second pole 46 respectively pass through After the upper cover 14 and the bottom case 12 are spliced into the through hole 156, it is further inserted into the insertion hole 24 of the first terminal 2 and the insertion hole 34 of the second terminal 3, so that the first insulated wire 5 and the second insulated wire The two insulated wires 6 are electrically connected, and when the current is too large, the fuse 48 is blown, so the power is cut off, preventing the excessive current from damaging the electrical equipment.

In the present utility model, the first insulated wire 5 and the second insulated wire 6 are installed on the left and right ends of the connecting shell 1 respectively, and are separated by a spacer bar 130 and a spacer bar 150 so that the first terminal 2 and the second terminal 3 Can not directly contact and conduct electricity, install a fuse 4 with a fuse 48 to make the first insulated wire 5 and the second insulated wire 6 electrically conductive, but when the current exceeds the specified size, the fuse 48 is blown and cut off, preventing Damage to electrical appliances, ensure circuit safety.

Claims (10)

1. device for protecting power supply circuit is characterized in that: it comprises that one connects shell, a first terminal, one second terminal and a safety plate,

This connection shell comprises a drain pan and a loam cake;

This drain pan comprises a body, and two ora terminalis respectively are provided with a sidewall about this body one side, and this body opposite side is provided with the tank of a placement wire rod, and two ends, the left and right sides respectively are provided with a reference column on this drain pan, and a breach is respectively offered at these two ends, body top edge left and right sides;

This loam cake comprises a body, two ora terminalis respectively are provided with the sidewall that a corresponding buckle connects this base side walls about this body one side, this body opposite side is provided with a tank of placing wire rod, and two breach are offered to two breach that should base in the two ends, the top edge left and right sides of this body;

Couple together between the tank of this drain pan and the tank of this loam cake;

This first terminal and this second terminal are installed in the end of two power lines respectively, respectively offer a location hole and a jack on it;

This safety plate comprises one first pole, one second pole, a fuse, and the same end of this first pole and this second pole is respectively equipped with corresponding Plug Division of inserting in this two jack, and this fuse is connected between this first pole and this second pole.

2. device for protecting power supply circuit according to claim 1 is characterized in that: the position, middle of this drain pan is provided with an isolating bar, and this isolating bar passes this body and this tank.

3. device for protecting power supply circuit according to claim 2 is characterized in that: this reference column is located at the isolating bar both sides, and this breach is located at the isolating bar both sides.

4. device for protecting power supply circuit according to claim 2 is characterized in that: the position, middle of this loam cake is provided with an isolating bar to isolating bar that should drain pan, and this isolating bar passes this body and this tank.

5. device for protecting power supply circuit according to claim 1 is characterized in that: be provided with dowel between the edge of the edge of the tank of this drain pan and the tank of this loam cake, this drain pan and loam cake are coupled together.

6. device for protecting power supply circuit according to claim 1 is characterized in that: the tank of this drain pan and the tank of this loam cake are spliced into the storage tank of a circular cross-section.

7. device for protecting power supply circuit according to claim 1 is characterized in that: the breach of this loam cake and the breach of this drain pan are spliced into a through hole, and this through hole is to should jack.

8. device for protecting power supply circuit according to claim 1 is characterized in that: offer a blocked hole on each sidewall of this drain pan, establish the fixture block of the blocked hole of corresponding this drain pan of buckle on each sidewall of this loam cake.

9. device for protecting power supply circuit according to claim 1 is characterized in that: offer a blocked hole on each sidewall of this loam cake, establish the fixture block of the blocked hole of corresponding this loam cake of buckle on each sidewall of this drain pan.

10. device for protecting power supply circuit according to claim 1 is characterized in that: this safety plate comprises a shell, and this first pole and second pole are installed in the two ends in this shell respectively, and stretch out outside this shell this two Plug Division.

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