CN219833750U - Overcurrent protection device with alarm function - Google Patents

Abstract

The utility model discloses an overcurrent protection device with an alarm function, which relates to the technical field of overcurrent protectors, in particular to an overcurrent protection device with an alarm function. When the utility model is used, the connecting seat is used for connecting with the wire core, at the moment, the zero and live wires are conducted, when the current in the circuit exceeds a set value, the magnetic force generated by the coil pulls the insulating block to move upwards, and at the moment, the insulating block compresses the extrusion protrusion to give an alarm prompt.

Description

Overcurrent protection device with alarm function

Technical Field

The utility model relates to the technical field of overcurrent protectors, in particular to an overcurrent protection device with an alarm function.

Background

The current protection is a protection mode for enabling the protection device to act when the current exceeds a preset maximum value, and the protection device is started when the current flowing through the protected original exceeds a preset certain value, so that the overcurrent protector is a device for protecting the overload of the current and plays a vital role in circuit safety. However, the existing overcurrent protector has no alarm prompting function after tripping and power-off. Therefore, we propose an overcurrent protection device with an alarm function.

Disclosure of Invention

In order to solve the defects in the prior art, the utility model provides an overcurrent protection device with an alarm function.

In order to achieve the above purpose, the utility model is realized by the following technical scheme:

the utility model provides an overcurrent protection device with alarming function, includes insulating housing, and insulating housing's both ends are connected with connecting seat, its characterized in that: the bottom surface of the insulating shell is provided with a strip-shaped opening, the upper end and the lower end in the strip-shaped opening are respectively provided with an inclined panel, the inclined panels are positioned in the insulating shell, two extrusion protrusions are movably arranged on the inclined panels positioned at the top in a penetrating manner, one end of each extrusion protrusion extends into the strip-shaped opening, the other end of each extrusion protrusion extends into the insulating shell, and second conductive contacts are respectively arranged at the tail ends of the extrusion protrusions in the insulating shell;

the second conductive contacts are connected to the elastic sheet, a first conductive contact is arranged on one side of each second conductive contact, a gap is arranged between each first conductive contact and each second conductive contact, and in a non-stressed state, the elastic sheet drives the extrusion protrusions to extend into the strip-shaped openings, so that the first conductive contacts and the second conductive contacts are directly not contacted;

the two second conductive contacts are arranged in an insulated fixed seat, and the edges of the fixed seat are fixed in an insulated shell;

the insulation block is arranged in the strip-shaped opening and extends to the outer side of the strip-shaped opening, the insulation block can move up and down in the strip-shaped opening, and the insulation block is pressed on the two extrusion protrusions;

an alarm is arranged on the insulating shell; wherein, the circuit board is installed to one side of keeping away from the alarm in the insulating housing, and the circuit board passes through the wire and links to each other with the second conductive contact, and first conductive contact passes through the wire and links to each other with the alarm.

Preferably, two symmetrically arranged connecting holes are formed in the end face of the connecting seat, each connecting Kong Najun is provided with a first conductive seat, the first conductive seat is of a hollow structure and is internally used for being inserted with a wire core, fastening bolts are arranged on the surface of the connecting seat, and the bolts extend into the first conductive seat;

wherein, the two first conductive seats positioned on the same side are connected by a wire, and the first conductive seats on the other side are connected at two ends of the overcurrent protection device;

the overcurrent protection device comprises a cylindrical iron core arranged at the inner top of the insulating shell, a coil is fixedly arranged on the cylindrical iron core, and one end of the top of the coil is connected with the first conductive seat through a second connecting wire;

a cylindrical conductive block is arranged below the cylindrical iron core, the cylindrical conductive block is arranged at one end of an insulating strip-shaped seat, the other end of the insulating strip-shaped seat is connected in a U-shaped seat through a rotating shaft, the U-shaped seat is arranged on the inner wall of an insulating shell below the circuit board, and the insulating block is arranged at one end, far away from the U-shaped seat, of the insulating strip-shaped seat;

the two sides of the U-shaped seat and the two sides of the end part of the insulating strip-shaped seat far away from the U-shaped seat are connected with connecting bulges, and a tensioning spring is connected between the two connecting bulges on the same side;

the below of cylindricality conducting block is equipped with the second conducting seat, and the second conducting seat is installed in insulating housing bottom, and when the insulating block moved to bar mouth top, the insulating block was pressed on the extrusion arch, and the intimate contact between cylindricality conducting block top and the cylindricality iron core, and when the insulating block moved to bar mouth bottom, cylindricality conducting block and the second conducting seat intimate contact, wherein, between second conducting seat and the first conducting seat and between the bottom of cylindricality conducting block and coil all link to each other through first connecting wire.

Preferably, arc extinguishing bars are arranged at the contact positions of the top of the cylindrical iron core and the cylindrical conductive block and the contact positions of the bottom of the cylindrical conductive block and the second conductive seat, and are arranged on the inner wall of the insulating shell.

Preferably, the alarm is a buzzer.

Preferably, two ends of the circuit board are connected to the zero fire wire through wires.

Preferably, the first conductive contact and the second conductive contact are also provided with arc extinguishing grids, and the arc extinguishing grids are arranged on the inner wall of the insulating shell.

Compared with the prior art, when the utility model is used, the connecting seat is internally used for being connected with the wire core, at the moment, the zero-live wire is conducted, when the current in the circuit exceeds the set value, the magnetic force generated by the coil pulls the insulating block to move upwards, and at the moment, the insulating block compresses the extrusion protrusion to give an alarm and prompt, so that the utility model is simple to operate and convenient to use.

Drawings

Fig. 1 is a schematic perspective view of the present utility model.

Fig. 2 is a schematic illustration of the structure of the present utility model after disconnection.

Fig. 3 is a schematic view of the closed structure of the present utility model.

Fig. 4 is a schematic diagram of wiring within an insulated housing of the present utility model.

In the figure: 1. an insulating housing; 2. an alarm; 3. a connecting seat; 4. a bevel panel; 5. extruding the bulge; 6. a strip-shaped opening; 7. an insulating block; 8. a connection hole; 9. a cylindrical iron core; 10. a coil; 11. a first conductive contact; 12. a second conductive contact; 13. an elastic sheet; 14. a fixing seat; 15. an insulating strip seat; 16. a columnar conductive block; 17. a first connecting line; 18. tensioning the spring; 19. a connection protrusion; 20. a U-shaped seat; 21. a circuit board; 22. a first conductive base; 23. arc extinguishing grid; 24. a second conductive base; 25. and a second connecting wire.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1 to 4, the present utility model provides a technical solution: the utility model provides an overcurrent protection device with alarming function, includes insulating housing 1, and connecting seat 3 is connected with at insulating housing 1's both ends, and insulating housing 1 bottom surface has seted up a bar mouth 6, and the upper and lower both ends in the bar mouth 6 all are equipped with inclined plane board 4, and inclined plane board 4 is located insulating housing 1, is located the activity on inclined plane board 4 at top and runs through and be equipped with two extrusion protrusion 5;

as shown in fig. 2 and 3, one end of the pressing projection 5 extends into the strip-shaped opening 6, and the other end extends into the insulating housing 1, and second conductive contacts 12 are mounted on the ends of the pressing projection 5 in the insulating housing 1;

the second conductive contacts 12 are all connected to the elastic sheet 13, one side of the second conductive contacts 12 is provided with the first conductive contacts 11, a gap is arranged between the first conductive contacts 11 and the second conductive contacts 12, as shown in fig. 3, in the non-stressed state of the elastic sheet 13, the elastic sheet 13 drives the extrusion protrusions 5 to extend into the strip-shaped openings 6, and the first conductive contacts 11 and the second conductive contacts 12 are directly not contacted;

the two second conductive contacts 12 are all installed in an insulated fixed seat 14, the edge of the fixed seat 14 is fixed in the insulated shell 1, and the fixed seat 14 supports and fixes the two first conductive contacts 11;

the utility model also comprises an overcurrent protection device arranged on the insulating shell 1, the overcurrent protection device is connected with an insulating block 7, the insulating block 7 is arranged in the strip-shaped opening 6 and extends to the outer side of the strip-shaped opening 6, the insulating block 7 can move up and down in the strip-shaped opening 6, and the insulating block 7 is pressed on the two extrusion protrusions 5;

an alarm 2 is arranged on the insulating shell 1, and the alarm 2 is a buzzer.

Wherein, one side of the insulating housing 1 far away from the alarm 2 is provided with a circuit board 21, the circuit board 21 is connected with the second conductive contact 12 through a wire, and the first conductive contact 11 is connected with the alarm 2 through a wire. When the insulating block 7 is located at the top of the strip-shaped opening 6, as shown in fig. 2, the insulating block 7 is pressed on the two extrusion protrusions 5, so that the extrusion protrusions 5 drive the first conductive contacts 11 and the second conductive contacts 12 to be in contact, the voltage through the control circuit board is conducted, the alarm 2 is given an alarm prompt, and when the insulating block 7 is located at the bottom of the strip-shaped opening 6, the insulating block 7 is separated from the extrusion protrusions 5, and at the moment, the first conductive contacts 11 and the second conductive contacts are separated under the drive of the elastic sheet 13, so that the alarm 2 is closed.

As shown in fig. 1, two symmetrically arranged connecting holes 8 are formed in the end surface of the connecting seat 3, a first conductive seat 22 is installed in each connecting hole 8, the first conductive seat 22 is of a hollow structure, a wire core is inserted into the first conductive seat 22, fastening bolts are arranged on the surface of the connecting seat 3 and extend into the first conductive seat 22, and the wire core is fixed in the first conductive seat 22 through the bolts to prevent loosening;

as shown in fig. 4, two first conductive seats 22 on the same side are connected by wires, and the first conductive seats 22 on the other side are connected to two ends of the overcurrent protection device;

the overcurrent protection device comprises a cylindrical iron core 9 arranged at the inner top of the insulating shell 1, a coil 10 is fixedly arranged on the cylindrical iron core 9, the coil 10 is an insulating coil, and one end of the top of the coil 10 is connected with a first conductive seat 22 through a second connecting wire 25;

a cylindrical conductive block 16 is arranged below the cylindrical iron core 9, the cylindrical conductive block 16 is arranged at one end of an insulating strip-shaped seat 15, the other end of the insulating strip-shaped seat 15 is connected in a U-shaped seat 20 through a rotating shaft, the U-shaped seat 20 is arranged on the inner wall of the insulating shell 1 below the circuit board 21, and the insulating block 7 is arranged at one end of the insulating strip-shaped seat 15 far away from the U-shaped seat 20;

the two sides of the U-shaped seat 20 and the two sides of the end part of the insulating strip-shaped seat 15 far away from the U-shaped seat 20 are connected with connecting protrusions 19, and a tensioning spring 18 is connected between the two connecting protrusions 19 on the same side, as shown in fig. 2 and 3, no matter whether the insulating block 7 is positioned at the top or the bottom of the strip-shaped opening 6, at the moment, an included angle exists between the tensioning spring 18 and the horizontal direction of the insulating strip-shaped seat 15, so the insulating strip-shaped seat 15 is always clung to the top and bottom side surfaces of the strip-shaped opening 6 under the pulling of the spring, and the insulating strip-shaped seat cannot loosen;

a second conductive seat 24 is arranged below the cylindrical conductive block 16, the second conductive seat 24 is arranged at the inner bottom of the insulating shell 1, and as shown in fig. 2, when the insulating block 7 moves to the top of the strip-shaped opening 6, the insulating block 7 is pressed on the extrusion protrusion 5, and the top of the cylindrical conductive block 16 is in close contact with the cylindrical iron core 9;

when the insulating block 7 moves to the bottom of the bar-shaped opening 6, the cylindrical conductive block 16 and the second conductive seat 24 are in close contact, wherein the second conductive seat 24 and the first conductive seat 22 and the cylindrical conductive block 16 and the bottom of the coil 10 are connected through the first connecting wire 17. As shown in fig. 2, when the current in the line exceeds the set value, the magnetic force generated by the coil pulls the insulating block 7 to move upwards, at this time, the insulating block 7 presses the extrusion protrusion 5 to give an alarm, and when the insulating block 7 moves downwards, the cylindrical conductive block 16 and the second conductive seat 24 are conducted, at this time, the line is conducted.

It is emphasized that due to the presence of the tension spring 18, the coil will not pull the insulating block 7 when the current in the coil 10 does not exceed the preset current value, and the insulating block 7 will be pulled when the current in the coil 10 exceeds the preset current value. Wherein, arc extinguishing bars 23 are also arranged at the first conductive contact 11 and the second conductive contact 12, and the arc extinguishing bars 23 are all arranged on the inner wall of the insulating shell 1.

As shown in fig. 2 and 3, arc extinguishing bars 23 are arranged at the contact positions of the cylindrical iron core 9 and the cylindrical conductive block 16 and the contact positions of the bottom of the cylindrical conductive block 16 and the second conductive seat 24, and the arc extinguishing bars 23 are arranged on the inner wall of the insulating shell 1. Can eliminate the generated arc

As shown in fig. 4, both ends of the circuit board 21 are connected to a neutral wire by wires.

In the description of the present utility model, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are based on directions or positional relationships shown in the drawings, are merely for convenience of description and simplification of description, and do not indicate or imply that the apparatus or element to be referred to must have a specific direction, be constructed and operated in the specific direction, and thus should not be construed as limiting the present utility model; the terms "first," "second," "third," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance, and furthermore, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "coupled," and the like are to be construed broadly, and may be fixedly coupled, detachably coupled, or integrally coupled, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims (6)

1. The utility model provides an overcurrent protection device with alarming function, includes insulating housing (1), and the both ends of insulating housing (1) are connected with connecting seat (3), its characterized in that: a strip-shaped opening (6) is formed in the bottom surface of the insulating shell (1), inclined plates (4) are arranged at the upper end and the lower end in the strip-shaped opening (6), the inclined plates (4) are positioned in the insulating shell (1), two extrusion protrusions (5) are movably arranged on the inclined plates (4) positioned at the top in a penetrating mode, one ends of the extrusion protrusions (5) extend into the strip-shaped opening (6), the other ends of the extrusion protrusions extend into the insulating shell (1), and second conductive contacts (12) are arranged at the tail ends of the extrusion protrusions (5) in the insulating shell (1);

the second conductive contacts (12) are connected to the elastic sheet (13), one side of each second conductive contact (12) is provided with a first conductive contact (11), a gap is formed between each first conductive contact (11) and each second conductive contact (12), the elastic sheet (13) drives the extrusion protrusions (5) to extend into the strip-shaped openings (6) in a non-stressed state, and the first conductive contacts (11) and the second conductive contacts (12) are directly not contacted;

the two second conductive contacts (12) are arranged in an insulated fixed seat (14), and the edges of the fixed seat (14) are fixed in an insulated shell (1);

the device also comprises an overcurrent protection device arranged on the insulating shell (1), the overcurrent protection device is connected with an insulating block (7), the insulating block (7) is arranged in the strip-shaped opening (6) and extends to the outer side of the strip-shaped opening, the insulating block (7) can move up and down in the strip-shaped opening (6), and the insulating block (7) is pressed on the two extrusion protrusions (5);

an alarm (2) is arranged on the insulating shell (1); wherein, circuit board (21) is installed to one side that keeps away from alarm (2) in insulating housing (1), and circuit board (21) pass through wire and second conductive contact (12) and link to each other, and first conductive contact (11) pass through wire and alarm (2) and link to each other.

2. An overcurrent protection device with an alarm function according to claim 1, wherein: two symmetrically arranged connecting holes (8) are formed in the end face of the connecting seat (3), a first conductive seat (22) is arranged in each connecting hole (8), the first conductive seat (22) is of a hollow structure, a wire core is inserted into the first conductive seat (22), fastening bolts are arranged on the surface of the connecting seat (3), and extend into the first conductive seat (22);

wherein two first conductive seats (22) positioned on the same side are connected through a wire, and the first conductive seats (22) on the other side are connected to two ends of the overcurrent protection device;

the overcurrent protection device comprises a cylindrical iron core (9) arranged at the inner top of the insulating shell (1), a coil (10) is fixedly arranged on the cylindrical iron core (9), and one end of the top of the coil (10) is connected with a first conductive seat (22) through a second connecting wire (25);

a cylindrical conductive block (16) is arranged below the cylindrical iron core (9), the cylindrical conductive block (16) is arranged at one end of an insulation strip-shaped seat (15), the other end of the insulation strip-shaped seat (15) is connected in a U-shaped seat (20) through a rotating shaft, the U-shaped seat (20) is arranged on the inner wall of an insulation shell (1) below the circuit board (21), and the insulation block (7) is arranged at one end, far away from the U-shaped seat (20), of the insulation strip-shaped seat (15);

the two sides of the U-shaped seat (20) and the two sides of the end part of the insulating strip-shaped seat (15) far away from the U-shaped seat (20) are connected with connecting bulges (19), and a tensioning spring (18) is connected between the two connecting bulges (19) on the same side;

the below of cylindricality conducting block (16) is equipped with second conducting seat (24), second conducting seat (24) installs in insulating housing (1) bottom, when insulating block (7) motion to bar mouth (6) top, insulating block (7) are pressed on extrusion arch (5), close contact between cylindricality conducting block (16) top and cylindricality iron core (9), when insulating block (7) motion to bar mouth (6) bottom, cylindricality conducting block (16) and second conducting seat (24) close contact, wherein, between second conducting seat (24) and first conducting seat (22), and all link to each other through first connecting wire (17) between the bottom of cylindricality conducting block (16) and coil (10).

3. An overcurrent protection device with an alarm function as set forth in claim 2, wherein: arc extinguishing grids (23) are arranged at the contact positions of the top of the cylindrical iron core (9) and the cylindrical conductive block (16) and the contact positions of the bottom of the cylindrical conductive block (16) and the second conductive seat (24), and the arc extinguishing grids (23) are arranged on the inner wall of the insulating shell (1).

4. An overcurrent protection device with an alarm function according to claim 1, wherein: the alarm (2) is a buzzer.

5. An overcurrent protection device with an alarm function according to claim 1, wherein: the two ends of the circuit board (21) are connected to the zero fire wire through wires.

6. An overcurrent protection device with an alarm function according to claim 1, wherein: arc extinguishing grids (23) are arranged at the first conductive contact (11) and the second conductive contact (12) as well, and the arc extinguishing grids (23) are arranged on the inner wall of the insulating shell (1).