CN213546212U

CN213546212U - Relay with overcurrent protection

Info

Publication number: CN213546212U
Application number: CN202022797070.8U
Authority: CN
Inventors: 雷华锋; 张光
Original assignee: Shenzhen Ruilei Industrial Electric Co ltd
Current assignee: Shenzhen Ruilei Industrial Electric Co ltd
Priority date: 2020-11-27
Filing date: 2020-11-27
Publication date: 2021-06-25
Anticipated expiration: 2030-11-27

Abstract

The utility model discloses a relay with overcurrent protection, including main body cover and filter screen, main body cover's below one side is fixed with the fixed head, and the middle part of fixed head has seted up the mounting hole, one side of main body cover is fixed with the guard plate. This relay fixed head with overcurrent protection and main body cover are together fixed, and be linked together between fixed head and the mounting hole, can install the device wholly fixedly through fixed head and mounting hole, bond mutually between guard plate and the main body cover, through the guard plate, can protect the device wholly, thereby prevent that the device from taking place to damage when meetting the striking and dropping, the top cap can be dismantled through between bolt and the main body cover, through the bolt, can dismantle the top cap, thereby can maintain the clearance to the device inside, be linked together between filter screen and bleeder vent and the main body cover, through the heat-conducting plate, can absorb the heat that the device during inner work produced.

Description

Relay with overcurrent protection

Technical Field

The utility model relates to a relay technical field specifically is a relay with overcurrent protection.

Background

The relay is an electric control device, when the change of input quantity meets the specified requirement, the controlled quantity is changed into a preset step change in the electric output circuit, it has the interaction relation between control system and controlled system, and is usually used in automatic control circuit, it is an "automatic switch" which actually uses small current to control large current operation, so that it can play the functions of automatic regulation, safety protection and switching circuit, and the relay is an automatic switch element with isolation function, and can be extensively used in remote control, remote measurement, communication, automatic control, mechatronics and electric power electronic equipment.

The existing relay equipment is too complex in structure and cannot be adjusted when meeting high current in use, so that the device can be damaged, and heat generated during internal work of the device cannot be discharged.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a relay with overcurrent protection to current relay equipment structure that proposes in solving above-mentioned background art is too complicated, can not adjust when meetting the heavy current when using, thereby can cause the damage to the device, and the heat that produces when installing the inside work can not carry out the exhaust problem.

In order to achieve the above object, the utility model provides a following technical scheme: a relay with overcurrent protection comprises a main body shell and a filter screen, wherein a fixed head is fixed on one side below the main body shell, a mounting hole is formed in the middle of the fixed head, a protection plate is fixed on one side of the main body shell, a top cover is mounted at the upper end of the main body shell through a bolt, the filter screen is located in the middle of the upper portion of the top cover, an air hole is connected to the lower portion of the filter screen, a heat conduction plate is mounted in the middle of the lower portion of the top cover, a wire fixing head is arranged above one side of the main body shell, the other side of the wire fixing head is connected with a wire inlet, a static iron core shaft is arranged in the middle of the inner side of the main body shell, a coil is mounted on the surface of the static iron core shaft, a movable iron core shaft is connected above the static iron core shaft, a heat dissipation plate is arranged in the middle of the, and the lower part of the reset spring is provided with a touch panel, the top end of the static iron core shaft is provided with a limit ball, a threaded rod penetrates through the middle part above the thread fixing head, and the lower part of the threaded rod is provided with a pressing plate.

Preferably, the fixing head is fixedly connected with the main body shell, and the fixing head is communicated with the mounting hole.

Preferably, the protection plate is adhered to the main body outer shell, and the protection plate is symmetrically distributed about the vertical center line of the main body outer shell.

Preferably, the top cover forms a detachable structure with the main body shell through a bolt, and the top cover is tightly attached to the main body shell.

Preferably, the filter screen, the air holes and the main body shell are communicated with each other, and the heat conducting plate is bonded with the top cover.

Preferably, the heat dissipation plate forms a movable connection structure with the main body casing through the movable shaft, and the heat dissipation plate is in a dense hole shape.

Preferably, the threaded rod forms a threaded connection structure with the pressing plate through the thread fixing head, and the pressing plate is tightly attached to the thread inlet.

Preferably, the movable iron core shaft and the touch plate form an elastic connection structure through a return spring, and the return spring is fixedly connected with the touch plate.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the fixing head and the main body shell are fixed together, the fixing head and the mounting hole are communicated, the device can be integrally installed and fixed through the fixing head and the mounting hole, the protection plate and the main body shell are bonded with each other, the device can be integrally protected through the protection plate, the device is prevented from being damaged when the device is collided and fallen down, the top cover can be detached through the bolt between the bolt and the main body shell, the top cover can be detached through the bolt, and the inside of the device can be maintained and cleaned.

2. Be linked together between filter screen and bleeder vent and the main body cover, and bond mutually between heat-conducting plate and the top cap, through the heat-conducting plate, can absorb the heat that the device internal work produced, thereby can discharge in the bleeder vent, through the filter screen, can prevent inside dust impurity entering device, the heating panel passes through and can rotate between loose axle and the main body cover, through the heating panel, can guarantee the air circulation nature of device, thereby be favorable to cooling down to the device.

3. The threaded rod is connected with the pressing plate through threads between the wire fixing head and the pressing plate, the wire fixing head is pressed downwards through the threaded rod, so that the wire body can be fixed, loosening and falling of the wire body are avoided, the movable iron core shaft is connected with the contact plate through the reset spring in an elastic mode, the reset spring and the contact plate are fixed together, the movable iron core shaft can be in contact with the static iron core shaft when the current is too large through the reset spring and the contact plate, and the device can be protected.

Drawings

FIG. 1 is a schematic view of the overall cross-sectional structure of the present invention;

FIG. 2 is an enlarged schematic view of the structure at A of FIG. 1 according to the present invention;

fig. 3 is a left side view structural diagram of the thread fixing head of the present invention.

In the figure: 1. a main body housing; 2. a fixed head; 3. mounting holes; 4. a protection plate; 5. a top cover; 6. a bolt; 7. a filter screen; 8. air holes are formed; 9. a heat conducting plate; 10. fixing the thread end; 11. a wire inlet; 12. a static iron core shaft; 13. a coil; 14. a moving iron core shaft; 15. a heat dissipation plate; 16. a movable shaft; 17. a return spring; 18. a touch panel; 19. a limiting ball; 20. a threaded rod; 21. and (7) pressing a plate.

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. 1-3, the present invention provides a technical solution: a relay with overcurrent protection comprises a main body shell 1 and a filter screen 7, wherein a fixed head 2 is fixed on one side below the main body shell 1, a mounting hole 3 is formed in the middle of the fixed head 2, a protection plate 4 is fixed on one side of the main body shell 1, a top cover 5 is installed at the upper end of the main body shell 1 through a bolt 6, the filter screen 7 is positioned in the middle of the upper portion of the top cover 5, an air vent 8 is connected to the lower portion of the filter screen 7, a heat conduction plate 9 is installed in the middle of the lower portion of the top cover 5, a wire fixing head 10 is arranged above one side of the main body shell 1, a wire inlet 11 is connected to the other side of the wire fixing head 10, a static iron core shaft 12 is arranged in the middle of the inner side of the main body shell 1, a coil 13 is installed on the surface of the static iron core shaft 12, a movable iron core shaft 14 is connected above the, a return spring 17 is fixed in the middle of the lower part of the moving iron core shaft 14, a contact plate 18 is installed on the lower part of the return spring 17, a limit ball 19 is arranged on the top end of the static iron core shaft 12, a threaded rod 20 penetrates through the middle of the upper part of the thread fixing head 10, and a pressing plate 21 is installed on the lower part of the threaded rod 20;

the fixing head 2 is fixedly connected with the main body shell 1, the fixing head 2 is communicated with the mounting hole 3, the whole device can be installed and fixed through the fixing head 2 and the mounting hole 3, the protection plate 4 is bonded with the main body shell 1, the protection plate 4 is symmetrically distributed about the vertical central line of the main body shell 1, the whole device can be protected through the protection plate 4, the device is prevented from being damaged when being impacted and dropped, the top cover 5 forms a detachable structure through the bolt 6 and the main body shell 1, the top cover 5 is tightly attached to the main body shell 1, the top cover 5 can be detached through the bolt 6, and the interior of the device can be maintained and cleaned;

the filter screen 7, the air holes 8 and the main body shell 1 are communicated with each other, the heat conducting plate 9 and the top cover 5 are bonded with each other, heat generated in the device during working can be absorbed through the heat conducting plate 9, so that the heat can be discharged from the air holes 8, dust and impurities can be prevented from entering the device through the filter screen 7, the heat dissipation plate 15 forms a movable connection structure with the main body shell 1 through the movable shaft 16, the heat dissipation plate 15 is in a dense hole shape, and air circulation of the device can be ensured through the heat dissipation plate 15, so that the device is favorably cooled;

threaded rod 20 constitutes threaded connection structure between through solidus head 10 and clamp plate 21, and closely laminate between clamp plate 21 and the incoming line 11, through threaded rod 20 with solidus head 10 push down and move, thereby can fix the line body, thereby avoid the line body to take place not hard up to drop, move iron core axle 14 and pass through to constitute elastic connection structure between reset spring 17 and the touch panel 18, and be fixed connection between reset spring 17 and the touch panel 18, through reset spring 17 and touch panel 18, can move iron core axle 14 and contact with quiet iron core axle 12 when the electric current is too big, thereby can protect the device.

The working principle is as follows: firstly, the whole device can be installed and fixed through the fixing head 2 and the mounting hole 3, the protection plate 4 is bonded with the main body shell 1, then the whole device is protected through the protection plate 4, so that the device is prevented from being damaged when being collided and dropped, then the top cover 5 can be disassembled through the bolt 6, so that the inside of the device can be maintained and cleaned, the filter screen 7 is communicated with the air holes 8 and the main body shell 1, the heat conducting plate 9 is bonded with the top cover 5, at the moment, heat generated during the operation inside the device is absorbed through the heat conducting plate 9, so that the heat can be discharged from the air holes 8, then, dust and impurities can be prevented from entering the inside of the device through the filter screen 7, then, the air circulation of the device can be ensured through the heat dissipation plate 15, so that the device is favorably cooled, at the moment, the thread fixing head 10 is pressed downwards through the threaded rod 20, thereby can fix the line body to avoid the line body to take place not hard up to drop, move iron core axle 14 and be connected through between reset spring 17 and the touch panel 18 elasticity, through reset spring 17 and touch panel 18 at last, can move iron core axle 14 and contact with quiet iron core axle 12 when the electric current is too big, thereby can protect the device.

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. The utility model provides a relay with overcurrent protection, includes main body cover (1) and filter screen (7), its characterized in that: the improved wire fixing device is characterized in that a fixing head (2) is fixed on one side of the lower portion of a main body shell (1), a mounting hole (3) is formed in the middle of the fixing head (2), a protection plate (4) is fixed on one side of the main body shell (1), a top cover (5) is installed at the upper end of the main body shell (1) through a bolt (6), a filter screen (7) is located in the middle of the upper portion of the top cover (5), air holes (8) are connected to the lower portion of the filter screen (7), a heat conduction plate (9) is installed in the middle of the lower portion of the top cover (5), a wire fixing head (10) is arranged above one side of the main body shell (1), the other side of the wire fixing head (10) is connected with a wire inlet (11), a static iron core shaft (12) is arranged in the middle of the inner side of the main body shell (1), a coil (13) is installed on the, the utility model discloses a solid fixed line head, including main body cover (1), the below middle part of main body cover (1) is provided with heating panel (15), and one side of heating panel (15) is connected with loose axle (16), the below middle part of moving iron core axle (14) is fixed with reset spring (17), and the lower part of reset spring (17) installs touch panel (18), the top of quiet iron core axle (12) is provided with spacing ball (19), threaded rod (20) are run through in the top middle part of solid line head (10), and clamp plate (21) are installed to the lower part of threaded rod (20).

2. The relay with overcurrent protection as set forth in claim 1, wherein: the fixing head (2) is fixedly connected with the main body shell (1), and the fixing head (2) is communicated with the mounting hole (3).

3. The relay with overcurrent protection as set forth in claim 1, wherein: for bonding between guard plate (4) and main body cover (1), and guard plate (4) are the symmetric distribution about the vertical central line of main body cover (1).

4. The relay with overcurrent protection as set forth in claim 1, wherein: the top cover (5) forms a detachable structure with the main body shell (1) through the bolt (6), and the top cover (5) is tightly attached with the main body shell (1).

5. The relay with overcurrent protection as set forth in claim 1, wherein: the filter screen (7) is communicated with the air holes (8) and the main body shell (1), and the heat conducting plate (9) is bonded with the top cover (5).

6. The relay with overcurrent protection as set forth in claim 1, wherein: the heat dissipation plate (15) forms a movable connection structure with the main body shell (1) through the movable shaft (16), and the heat dissipation plate (15) is in a dense hole shape.

7. The relay with overcurrent protection as set forth in claim 1, wherein: the threaded rod (20) forms a threaded connection structure with the pressing plate (21) through the thread fixing head (10), and the pressing plate (21) is tightly attached to the thread inlet (11).

8. The relay with overcurrent protection as set forth in claim 1, wherein: the movable iron core shaft (14) and the contact plate (18) form an elastic connection structure through the reset spring (17), and the reset spring (17) and the contact plate (18) are fixedly connected.