CN212967550U

CN212967550U - Power supply overload device for thermal relay

Info

Publication number: CN212967550U
Application number: CN202021012823.3U
Authority: CN
Inventors: 俞文华
Original assignee: Suzhou Huazhong Electrical Appliances Co ltd
Current assignee: Suzhou Huazhong Electrical Appliances Co ltd
Priority date: 2020-06-05
Filing date: 2020-06-05
Publication date: 2021-04-13
Anticipated expiration: 2030-06-05

Abstract

The utility model discloses a thermal relay power supply overload device, which comprises a housin, install relay work group in the casing, the conducting strip contact is installed in relay work group's left side, first contact point is installed on the upper portion of conducting strip contact, the first part of upper portion installation of first contact point, just keep away from on the first part the one end trompil of first contact point is equipped with the through-hole, install electric heat actuator in the through-hole, the second part is installed to electric heat actuator's bottom, the second contact point is just installed on electric heat actuator's right side on the upper portion of second part, the fixed block is installed to electric heat actuator's upper end, the fixed a set of first elastic component in both sides of fixed block, the relay fixing base is installed to the surface lower part of casing. The utility model has the advantages of reasonable design, realized that the relay takes place to transship and in time cut off the power supply, has the security.

Description

Power supply overload device for thermal relay

Technical Field

The utility model relates to a relay correlation technique field specifically is a thermal relay power supply overload device.

Background

With the rapid development of socio-economy, the use of electric power has become widespread, as the supply of electric power provides great convenience to daily life. Therefore, electric products all use electric power as a power source, and nowadays, the popularity of electric power has become one of the important indexes for measuring national economic development.

But the power utilization or power supply is convenient, and simultaneously, the danger exists, in order to reduce the danger in the power utilization or power supply, the fuse is arranged in the circuit to protect products in the power supply and ensure the power supply lead safely, so that the fuse can be automatically disconnected immediately when the circuit is in short circuit or abnormal overload of the power supply lead, and accidents such as electric wire fire and product burnout can be prevented. However, when protecting, the fuse is opened for a long time, and the existing fuses required for power supply require a short opening time, convenience in use and high cost performance. Therefore, it is necessary to design a power overload apparatus for a thermal relay to solve the above disadvantages.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a thermal relay supplies power overload device to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a power supply overload device of a thermal relay comprises a shell, wherein a relay working group is installed in the shell, a conducting plate contact is installed on the left side of the relay working group, a first contact point is installed on the upper portion of the conducting plate contact, a first part is installed on the upper portion of the first contact point in a welding mode, a through hole is formed in one end, far away from the first contact point, of the first part, an electric heating actuator is installed in the through hole in a sleeved mode, a second part is installed on the bottom end of the electric heating actuator in a welding mode, a second contact point is installed on the right side of the electric heating actuator on the upper portion of the second part, a fixed block is installed on the upper end of the electric heating actuator, a set of first elastic pieces are fixedly welded on two sides of the fixed block, a set of limiting blocks are installed on end faces, far away from the first elastic pieces, the lower end of the second elastic piece is welded and fixed with the supporting block, the lower part of the outer surface of the shell is provided with a relay fixing seat, and the rear side of the shell and the rear side of the relay fixing seat are welded and fixed with a mounting gasket.

Preferably, the left side of the first member is connected to a power input contact.

Preferably, the left side of the second member is connected to a power output contact.

Preferably, the mounting pad is provided with a mounting hole at the opening.

Preferably, a support rod is welded to the upper portion of the first member and to the right side of the electrothermal actuator.

Preferably, the lower part of the shell and the upper part of the relay fixing seat are matched and installed with the clamping groove through a clamping block.

Compared with the prior art, the beneficial effects of the utility model are that: firstly, operating personnel can install the integrated device through the installation gasket of casing and relay fixing base rear side, connect power input contact and power output contact and install on the power cord afterwards, the operation is used, wherein, when the device leads to unusual then to make the relay inside seriously generate heat in the use owing to transship, at this moment, the electric heat executor will be heated the elasticity that the expansion extension was overcome first elastic component and give the decurrent compression of second part, make first contact point and second contact point separation outage, guaranteed safe power consumption.

The utility model has the advantages of simple overall structure, reasonable in design, the practicality is strong, has realized that the relay takes place to transship and in time cut off the power supply, has the security, and in addition, demountable installation between relay casing and relay fixing base provides maintainer's facility, and convenient maintenance operation has advantages such as excellent in use effect.

Drawings

Fig. 1 is a schematic diagram of the overall structure of a thermal relay power supply overload apparatus of the present invention;

fig. 2 is a schematic diagram of a thermal overload separating structure of a thermal relay power supply overload device according to the present invention;

fig. 3 is an enlarged schematic structural view of a thermal relay power supply overload apparatus of the present invention at a point a in fig. 1;

fig. 4 is an enlarged schematic structural diagram of a thermal relay power supply overload apparatus of the present invention at the position B in fig. 1.

In the figure: 1. a housing; 2. a relay working group; 3. a conductive sheet contact; 4. a first contact point; 5. a first member; 6. a through hole; 7. an electric actuator; 8. a second component; 9. a second contact point; 10. a fixed block; 11. a first elastic member; 12. a limiting block; 13. a second elastic member; 14. a support block; 15. a relay fixing seat; 16. installing a gasket; 17. a power input contact; 18. a power supply output contact; 19. mounting holes; 20. a support bar; 21. a clamping block; 22. a clamping groove.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, 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. 1-4, the present invention provides a technical solution: a power supply overload device of a thermal relay comprises a shell 1, a relay working group 2 is installed in the shell 1, a conducting strip contact 3 is installed on the left side of the relay working group 2, a first contact point 4 is installed on the upper portion of the conducting strip contact 3, a first part 5 is installed on the upper portion of the first contact point 4 in a welding mode, a through hole 6 is formed in one end, far away from the first contact point 4, of the first part 5, an electric heating actuator 7 is installed in the through hole 6 in a sleeved mode, a second part 8 is fixedly installed at the bottom end of the electric heating actuator 7 in a welding mode, a second contact point 9 is installed on the upper portion of the second part 8 and on the right side of the electric heating actuator 7, a fixing block 10 is installed at the upper end of the electric heating actuator 7, a group of first elastic parts 11 is fixedly welded on two sides of the fixing block 10, a limiting block 12 is installed on the end, a supporting block 14 is fixedly welded at the lower end of the second elastic piece 13, a relay fixing seat 15 is installed at the lower part of the outer surface of the shell 1, and a gasket 16 is fixedly installed at the rear side of the shell 1 and the rear side of the relay fixing seat 15 in a welding mode;

the left side of the first component 5 is connected with a power input contact 17, the left side of the second component 8 is connected with a power output contact 18, a mounting pad 16 is provided with a mounting hole 19, the upper part of the first component 5 is welded with a mounting support rod 20 on the right side of the electric heating actuator 7, the lower part of the shell 1 and the upper part of the relay fixing seat 15 are matched and mounted with a clamping groove 22 through a clamping block 21, firstly, an operator can mount the integral device through the mounting pad 16 on the rear side of the shell 1 and the relay fixing seat 15, then the power input contact 17 and the power output contact 18 are connected and mounted on a power line to start running and using, wherein when the device is abnormal due to overload in the using process and the inside of the relay is seriously heated, at the moment, the electric heating actuator 7 is heated, expands and overcomes the elastic force of the first elastic part 11 to compress the second component 8 downwards, make first contact point 4 and the 9 separation outage of second contact point, guaranteed safe power consumption, the utility model discloses overall structure is simple, reasonable in design, and the practicality is strong, has realized that the relay takes place to transship and in time cut off the power supply, has the security, and in addition, demountable installation between relay casing 1 and relay fixing base 15 provides maintainer's facility, makes things convenient for the maintenance operation, has advantages such as excellent in use effect.

The working principle is as follows: the utility model discloses a when using, at first, operating personnel can install the integrated device through the mounting pad piece 16 of casing 1 and relay fixing base 15 rear side, connect power input contact 17 and power output contact 18 and install on the power cord after that, the start operation is used, wherein, when the device leads to unusually then making the relay inside when seriously generating heat in the use owing to transshipping, at this moment, electric heat actuator 7 will be heated the elasticity that the inflation extension was overcome first elastic component 11 and give 8 decurrent compressions of second part, make first contact point 4 and second contact point 9 separation outage, the safe power consumption has been guaranteed, the device overall design is reasonable, and the device has the advantages of simple operation, high durability and convenient use, excellent use effect and the like.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, 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 invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A thermal relay power supply overload device comprising a casing (1), characterized in that: the electric relay is characterized in that a relay working group (2) is installed in the shell (1), a conducting strip contact (3) is installed on the left side of the relay working group (2), a first contact point (4) is installed on the upper portion of the conducting strip contact (3), a first part (5) is installed on the upper portion of the first contact point (4) in a welding mode, a through hole (6) is formed in one end, far away from the first contact point (4), of the first part (5), an electric heating actuator (7) is installed in the through hole (6) in a splicing mode, a second part (8) is installed at the bottom end of the electric heating actuator (7) in a welding and fixing mode, a second contact point (9) is installed on the upper portion of the second part (8) and on the right side of the electric heating actuator (7), a fixing block (10) is installed at the upper end of the electric heating actuator (7), and a set, a set of terminal surface welding installation stopper (12) that first elastic component (11) kept away from mutually, second elastic component (13) is all welded and installed to the lower part both sides of second part (8), the lower extreme welded fastening supporting shoe (14) of second elastic component (13), relay fixing base (15) are installed to the surface lower part of casing (1), the rear side of casing (1) with the rear side welding fixed mounting gasket (16) of relay fixing base (15).

2. A thermal relay power supply overload apparatus as recited in claim 1, further comprising: and a power supply input contact (17) is connected and installed on the left side of the first component (5).

3. A thermal relay power supply overload apparatus as recited in claim 1, further comprising: the left side of the second component (8) is connected with and provided with a power supply output contact (18).

4. A thermal relay power supply overload apparatus as recited in claim 1, further comprising: the mounting gasket (16) is provided with a mounting hole (19) through a hole.

5. A thermal relay power supply overload apparatus as recited in claim 1, further comprising: and a support rod (20) is welded and installed on the upper part of the first component (5) and on the right side of the electric heating actuator (7).

6. A thermal relay power supply overload apparatus as recited in claim 1, further comprising: the lower part of the shell (1) and the upper part of the relay fixing seat (15) are matched and installed with the clamping groove (22) through a clamping block (21).