CN218730776U

CN218730776U - Power device and power protection assembly

Info

Publication number: CN218730776U
Application number: CN202222776716.3U
Authority: CN
Inventors: 何茂盛; 毛善丰; 赵文福; 黄伟; 张兵
Original assignee: Guangzhou Shengyuan Electric Power Design Co ltd
Current assignee: Guangzhou Shengyuan Electric Power Design Co ltd
Priority date: 2022-10-20
Filing date: 2022-10-20
Publication date: 2023-03-24
Anticipated expiration: 2032-10-20

Abstract

The utility model discloses an electric power device and electric power protection subassembly relates to power equipment technical field. The power device includes: an insulating base; the contact part is arranged at each of two ends of the insulating base and comprises a connecting plate and a clamping plate, the connecting plate is connected with the insulating base, and a clamping opening for clamping a contact knife of the fuse is formed in the clamping plate; each contact part is provided with an external terminal for externally connecting a lead; the clamping blocks are arranged at two ends of the insulating base and are arranged oppositely, the clamping blocks are provided with mutually-oriented clamping surfaces, and the clamping surfaces extend from bottom to top. When the fuse is used, the external terminal on the contact part is connected with an external wire, and the contact knives at the two ends of the fuse are respectively clamped in the clamping openings to complete the conduction of the whole circuit and provide protection for the whole circuit.

Description

Power device and power protection assembly

Technical Field

The utility model relates to a power equipment technical field, in particular to power device and electric power protection subassembly.

Background

The fuse is an electric appliance which fuses a melt by heat generated by itself to open a circuit when a current exceeds a predetermined value. Therefore, the protective device is widely applied to high-low voltage distribution systems, control systems and electric equipment, and is one of the most commonly applied protective devices as a protector for short circuit and overcurrent.

The fuse holder is used for installing a main body part of the fuse and is convenient to replace the fuse after the fuse is fused. At present, fuse holders mainly utilize clamping plates to fix and electrically conduct contact blades of fuses. The fuse is in the course of the work, because the electric heating material that the fuse chose for use, the condition that self appears generating heat easily. The fuse is in the state that is higher than preset temperature for a long time, can shorten the life of fuse.

Meanwhile, in order to facilitate the installation and replacement of the fuse, the clamping force of the clamping plate cannot be set too large. As time goes by, the contact blade of the fuse held in the clamping plate is liable to slide down under the external force, and the contact area between the contact blade and the clamping plate is reduced, resulting in a situation where the fuse fails.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides an electric power device can improve the reliability of fuse.

The utility model discloses still provide an electric power protection subassembly that has above-mentioned electric power device.

According to the utility model discloses an electric power device of first aspect embodiment includes:

an insulating base;

the contact part is arranged at each of two ends of the insulating base and comprises a connecting plate and a clamping plate, the connecting plate is connected with the insulating base, and a clamping opening for clamping a contact knife of the fuse is formed in the clamping plate;

each contact part is provided with an external terminal for externally connecting a lead;

the clamping blocks are arranged at two ends of the insulating base and are arranged oppositely, the clamping blocks are provided with mutually-oriented clamping surfaces, and the clamping surfaces extend from bottom to top.

According to the utility model discloses electric power device has following beneficial effect at least: the insulating base has good insulating property, and provides good insulating protection for the contact part and the external terminal. When the fuse is used, the external terminal on the contact part is connected with an external wire, and the contact knives at the two ends of the fuse are respectively clamped in the clamping openings to complete the conduction of the whole circuit and provide protection for the whole circuit. The clamping surfaces opposite to the two clamping blocks can clamp the main body of the fuse, so that the fuse can be in a suspended state. Fuse and insulating base do not contact each other, have improved the cooling surface of fuse, have reduced the condition of the heat gathering that the fuse probably appears in the use to mention the life of fuse. In addition, because the clamping effect of two grip blocks to the fuse plays the supporting role to the fuse, has reduced the fuse and has followed the gliding possibility of centre gripping opening, avoids because the fuse gliding, leads to touching sword and contact portion area of contact to reduce, leads to the possibility of contact failure.

According to some embodiments of the present invention, the end of the insulating base, the contact portion and the clamping block are each formed with a through hole in which a fastening connector is detachably inserted.

According to some embodiments of the utility model, the tip of insulating base the contact portion with the grip block respectively is formed with a plurality of through-holes, and is a plurality of the through-hole is followed extend on insulating base's the length direction and arrange.

According to some embodiments of the utility model, the grip block includes two relative shell fragments that set up, two the lower extreme of shell fragment with connecting plate fixed connection, two the upper end bending of shell fragment forms the opening up the centre gripping opening.

According to some embodiments of the utility model, still include the pressure intensifying part, the pressure intensifying part includes two and exert pressure the end, two exert pressure the end butt respectively two the outside of shell fragment is used for to two the shell fragment provides the clamping-force that is close to each other.

According to some embodiments of the invention, the plenum member is an annular elastic member having an opening, the annular elastic member is fixed on the insulating base, and the opening of the annular elastic member is held outside the elastic piece.

According to the utility model discloses a some embodiments, be equipped with the arc mounting groove on the insulating base, the arc mounting groove is located the below of grip block, the arc mounting groove is relative the insulating base transversely sets up, the cell type of arc mounting groove with annular elastic component matches, annular elastic component installs in the arc mounting groove, and pass through the grip block compresses tightly fixedly.

According to some embodiments of the utility model, two the contact portion can be in the adjustment mounted position that insulating base is close to each other or keeps away from, two the grip block can the adjustment mounted position that insulating base is close to each other or keeps away from.

According to the utility model discloses a power protection component of second aspect embodiment, including the power device of above embodiment; the fuse comprises a fuse body and contact knives arranged at two ends of the fuse body, wherein the contact knives are clamped at two clamping openings on the clamping plates, and clamping surfaces of the two clamping blocks are clamped at two ends of the fuse body, so that the fuse body is suspended on the insulating base.

According to the utility model discloses electric power protection subassembly has following beneficial effect at least: overload protection can be provided for the circuit when the circuit is overloaded.

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

The invention is further described with reference to the following figures and examples, in which:

fig. 1 is a schematic front structural diagram of an electric power device according to an embodiment of the present invention;

fig. 2 is a top view of an electric power device according to an embodiment of the present invention;

fig. 3 is a left side view of an electric power device according to an embodiment of the present invention;

fig. 4 is a top view of an insulating base according to an embodiment of the present invention;

fig. 5 is a schematic front structural diagram of an electric power protection assembly according to an embodiment of the present invention.

Reference numerals:

an insulating base 100; an arc-shaped mounting groove 110;

a contact portion 200; a connecting plate 210; a clamping plate 220; a clamp opening 221; a spring plate 222;

an external connection terminal 300;

a clamping block 400; a clamping surface 410; a through-hole 420;

a fastening connection 500;

a plenum 600; a pressure applying end 610;

a fuse 700; a touch knife 710.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper and lower directions, is the orientation or positional relationship shown on the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore should not be construed as limiting the present invention.

In the description of the present invention, a plurality means two or more. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.

Referring to fig. 1 to 3, the utility model discloses an electric power device, include:

an insulating base 100;

the contact part 200 is arranged, the contact parts 200 are arranged at two ends of the insulating base 100, the contact part 200 comprises a connecting plate 210 and a clamping plate 220, the connecting plate 210 is connected with the insulating base 100, and the clamping plate 220 is provided with a clamping opening 221 for clamping a contact blade 710 of the fuse 700;

an external terminal 300, each contact portion 200 is provided with an external terminal 300 for externally connecting a wire;

the fixture block 400, the both ends of insulating base 100 all are equipped with fixture block 400, and two fixture block 400 set up relatively, and two fixture block 400 are equipped with the clamping face 410 of mutual orientation, and clamping face 410 extends the setting from bottom to top.

In the present embodiment, the insulating base 100 has good insulating performance, and provides good insulating protection for the contact portion 200 and the external terminal 300. The insulating base 100 is specifically a ceramic product, and has good insulating properties.

Referring to fig. 5, when the connector is used, the external terminal 300 of the contact portion 200 is connected to an external wire, and the contact blades 710 at two ends of the fuse 700 are respectively clamped in the clamping opening 221, so as to complete the conduction of the whole circuit and provide protection for the whole circuit.

The clamping surfaces 410 of the two clamping blocks 400 can clamp the main body of the fuse 700, so that the fuse 700 is suspended. The fuse 700 and the insulating base 100 are not in contact with each other, so that the heat dissipation surface of the fuse 700 is improved, the situation of heat collection which may occur in the use process of the fuse 700 is reduced, and the service life of the fuse 700 is prolonged.

In addition, due to the clamping effect of the two clamping blocks 400 on the fuse 700, the fuse 700 is supported, the possibility that the fuse 700 slides downwards from the clamping opening 221 is reduced, and the possibility that the contact blade 710 and the contact part 200 are reduced in contact area and poor in contact due to the fact that the fuse 700 slides downwards is avoided.

Referring to fig. 2 and 4, the end of the insulation base 100, the contact portion 200 and the clamping block 400 are each formed with a through-hole 420, and the fastening connector 500 is detachably inserted into the through-hole 420.

In the present embodiment, through holes 420 are formed in the end portion of the insulating base 100, the contact portion 200, and the clamping block 400, respectively, and thus, when the contact portion 200 and the clamping block 400 are fixed, the fastening connector 500 passes through the through holes in the end portion of the insulating base 100, the contact portion 200, and the clamping block 400, and simultaneously fixes the contact portion 200 and the clamping block 400 to the end portion of the insulating base 100.

Referring to fig. 2 and 4, the end portion of the insulation base 100, the contact portion 200, and the clamp block 400 are each formed with a plurality of through-holes 420, and the plurality of through-holes 420 are arranged to extend in the length direction of the insulation base 100.

In the present embodiment, by arranging the plurality of through holes 420 extending in the length direction of the insulating base 100, when the contact portion 200 and the clamping block 400 are fixed, the relative distance between the two contact portions 200 can be adjusted by fitting and fixing with the through holes 420 at different positions, thereby adjusting the distance between the two clamping openings 221 so that fuses 700 of different models can be snapped into the clamping openings 221.

Meanwhile, the relative distance between the two clamping blocks 400 can be adjusted, so that the distance between the two clamping surfaces 410 can be adjusted, fuses 700 of different models can be clamped, and the applicability of the power device is improved.

Referring to fig. 3, the clamping plate 220 includes two oppositely disposed elastic sheets 222, lower ends of the two elastic sheets 222 are fixedly connected to the connecting plate 210, and upper ends of the two elastic sheets 222 are bent to form a clamping opening 221 with an upward opening.

In this embodiment, as shown in fig. 5, the clamping plate 220 is composed of two oppositely disposed elastic sheets 222, and the lower ends of the two elastic sheets 222 are integrally formed with the connecting plate 210. When the fuse 700 is installed, the contact blades 710 at the two ends of the fuse 700 are inserted into the clamping opening 221, the clamping opening 221 is formed by the two elastic sheets 222, the contact blades 710 can be smoothly inserted into the clamping opening 221, and meanwhile, after the contact blades 710 are inserted into the clamping opening 221, the two elastic sheets 222 can clamp the contact blades 710, contact between the contact blades 710 and the elastic sheets 222 is guaranteed, and a connecting piece does not need to be additionally arranged.

Referring to fig. 3, the pressurizing member 600 further includes two pressing ends 610, and the two pressing ends 610 respectively abut against the outer sides of the two elastic sheets 222 for providing a clamping force to the two elastic sheets 222 to approach each other.

In the embodiment, by providing the pressurizing member 600, the pressurizing end 610 of the pressurizing member 600 applies pressure to the outer sides of the two elastic sheets 222, so as to improve the clamping force between the two elastic sheets 222, and the elastic sheets 222 clamp the contact knife 710.

Referring to fig. 3, the pressurizing member 600 is a ring-shaped elastic member having an opening, and the ring-shaped elastic member is fixed to the insulating base 100, and the opening of the ring-shaped elastic member is clamped to the outside of the resilient piece 222.

In this embodiment, the opening of the annular elastic member is clamped at the outer side of the elastic sheet 222, and the annular elastic member has the characteristic of returning to the initial state under the elastic action of the annular elastic member, so as to provide a clamping force for the two elastic sheets 222 to approach each other.

Referring to fig. 3 and 4, the insulation base 100 is provided with an arc-shaped mounting groove 110, the arc-shaped mounting groove 110 is located below the clamping block 400, the arc-shaped mounting groove 110 is transversely arranged relative to the insulation base 100, the groove shape of the arc-shaped mounting groove 110 is matched with an annular elastic member, and the annular elastic member is mounted in the arc-shaped mounting groove 110 and is pressed and fixed by the clamping block 400.

In this embodiment, when the annular elastic member is installed, the lower end of the annular elastic member is placed in the arc-shaped installation groove 110, and then the clamping block 400 is disposed in the ring of the annular elastic member and pressed on the annular elastic member, so that after the clamping block 400 is fixed on the insulating base 100, the annular elastic member can be pressed in the arc-shaped installation groove 110, and the opening of the annular elastic member is clamped outside the elastic sheet 222.

Referring to fig. 2 and 4, the two contact portions 200 can be located at the adjustment installation positions where the insulation bases 100 are close to or away from each other, and the two clamping blocks 400 can be located at the adjustment installation positions where the insulation bases 100 are close to or away from each other.

In the present embodiment, the relative distance between the two contact portions 200 may be adjusted, thereby adjusting the distance between the two clip openings 221 so that fuses 700 of different models can be snapped into the clip openings 221. Meanwhile, the relative distance between the two clamping blocks 400 can be adjusted, so that the distance between the two clamping surfaces 410 can be adjusted, fuses 700 of different models can be clamped, and the applicability of the power device is improved.

The utility model also discloses an electric power protection component, which comprises the electric power device of the embodiment; and a fuse 700 including a fuse body and contact blades 710 disposed at both ends of the fuse body, the contact blades 710 being clamped in the clamping openings 221 of the clamping plates 220, the clamping surfaces 410 of the clamping blocks 400 being clamped at both ends of the fuse body, and the fuse body being suspended on the insulating base 100.

Since the power protection component of this embodiment adopts all technical solutions of the power device of the above embodiments, at least all beneficial effects brought by the technical solutions of the above embodiments are achieved, and are not described herein again.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.

Claims

1. An electrical device, comprising:

an insulating base (100);

the contact part (200) is arranged at each of two ends of the insulating base (100), the contact part (200) comprises a connecting plate (210) and a clamping plate (220), the connecting plate (210) is connected with the insulating base (100), and a clamping opening (221) for clamping a contact knife (710) of the fuse (700) is formed in the clamping plate (220);

each contact part (200) is provided with an external terminal (300) for externally connecting a wire;

the clamping block (400), the both ends of insulating base (100) all are equipped with clamping block (400), two clamping block (400) set up relatively, two clamping block (400) are equipped with clamping face (410) of mutual orientation, clamping face (410) from bottom to top extend the setting.

2. The electrical power device according to claim 1, wherein: the end of the insulating base (100), the contact part (200) and the clamping block (400) are respectively formed with a through hole (420), and a fastening connector (500) is detachably inserted into the through hole (420).

3. The electrical power device according to claim 2, wherein: the end of the insulating base (100), the contact part (200) and the clamping block (400) are respectively provided with a plurality of through holes (420), and the through holes (420) extend along the length direction of the insulating base (100).

4. The electrical power device according to claim 1, wherein: the clamping plate (220) comprises two oppositely arranged elastic sheets (222), the lower ends of the two elastic sheets (222) are fixedly connected with the connecting plate (210), and the upper ends of the two elastic sheets (222) are bent to form the clamping opening (221) with an upward opening.

5. The electrical device of claim 4, wherein: the clamping device is characterized by further comprising a pressurizing piece (600), wherein the pressurizing piece (600) comprises two pressurizing ends (610), the two pressurizing ends (610) are abutted to the outer sides of the two elastic sheets (222) respectively and used for providing clamping force for the two elastic sheets (222) to approach each other.

6. The power device according to claim 5, characterized in that: the pressurizing piece (600) is an annular elastic piece with an opening, the annular elastic piece is fixed on the insulating base (100), and the opening of the annular elastic piece is clamped on the outer side of the elastic sheet (222).

7. The electrical device of claim 6, wherein: be equipped with arc mounting groove (110) on insulation base (100), arc mounting groove (110) are located the below of grip block (400), arc mounting groove (110) are relative insulation base (100) transversely sets up, the cell type of arc mounting groove (110) with annular elastic component matches, annular elastic component installs in arc mounting groove (110), and pass through grip block (400) compress tightly fixedly.

8. The electrical power device according to claim 1, wherein: the two contact parts (200) can be arranged at the adjusting and mounting positions where the insulating bases (100) are close to or far away from each other, and the two clamping blocks (400) can be arranged at the adjusting and mounting positions where the insulating bases (100) are close to or far away from each other.

9. A power protection assembly, comprising:

the power device of any one of claims 1 to 8;

the fuse (700) comprises a fuse body and contact blades (710) arranged at two ends of the fuse body, the contact blades (710) are clamped in clamping openings (221) on the clamping plates (220), and clamping surfaces (410) of the clamping blocks (400) are clamped at two ends of the fuse body to enable the fuse body to be suspended on the insulating base (100).