Protection device for installation of intermediate relay

Abstract

The utility model discloses a protective device for installation of an intermediate relay. The protective device comprises a relay main body and a bottom plate, the relay main body is mounted on the bottom plate; a protective structure; the protection structure comprises a protection plate and a cover plate which are arranged outside the relay main body, the protection plate is arranged outside the relay in a square-shaped surrounding manner, and the protection plate and the bottom plate are integrally formed; wiring harness holes are formed in two opposite side walls of the protection plate, the wiring harness holes correspond to contacts of the relay main body, wiring harnesses pass through the wiring harness holes to be connected with the contacts of the relay main body, heat dissipation notches are formed in the other two side walls of the protection plate, and dustproof filter screens are installed in the heat dissipation notches. Through the arrangement of the protection structure, the relay main body can be protected under the condition that the heat dissipation capability is guaranteed, external collision damage can be avoided, dust can be prevented from easily making contact with the relay main body, and a good environment is provided for work of the relay.

Description

Technical Field

[0001] The utility model relates to the technical field of intermediate relay protection equipment, in particular to a protection device installed on an intermediate relay. Background Art

[0002] An intermediate relay is an electrical control element, mainly used for signal amplification, conversion and transmission. It is usually located in an automated control system, receiving control signals and transmitting them to actuators. The structure and working principle of an intermediate relay are similar to those of an AC contactor, but the contact capacity is smaller, and it is usually used to control small current circuits. It has no main contacts, but consists of multiple sets of auxiliary contacts, which can be connected in a normally open or normally closed manner.

[0003] After searching, the Chinese patent application number is: CN202211556600.7, which discloses a small intermediate relay, including a magnetic circuit part, a contact part and an arc-isolating part, wherein the magnetic circuit part and the contact part are isolated by the arc-isolating part; the magnetic circuit part includes a coil frame and a coil arranged on the coil frame; the contact part includes a base and a plurality of static spring groups arranged on the base, and the coil frame is fixedly arranged on the base; the arc-isolating part includes a mounting part and a plurality of arc-isolating parts, and the mounting part includes a vertical side plate and a bottom side plate that are mutually angled, and a plurality of arc-isolating parts are arranged parallel to each other on the side of the vertical side plate away from the bottom side plate, and the arc-isolating part is located between the two static spring groups, and the bottom side plate is limitedly installed between the coil frame and the base, and the vertical side plate is located between the static spring group and the coil frame. The overall structure of the invention is more compact and small, the creepage distance is longer, arc-isolating and insulation effects are guaranteed, and the pressure resistance is better.

[0004] The above technical solution and traditional relays are generally installed directly on a fixed plate during installation. However, due to the lack of protection function after installation on the fixed plate, dust will fall on the relay, which will cause a short circuit in the relay for a long time. Therefore, we need to propose a protection device for the installation of an intermediate relay. Utility Model Content

[0005] The purpose of the utility model is to provide a protective device for installing an intermediate relay. The device has a simple structure and is easy to use. Through the setting of the protective structure, the relay body can be protected while ensuring the heat dissipation capacity. It can avoid external collision damage and prevent dust from easily contacting the relay body, providing a good environment for the operation of the relay to solve the problems raised in the above-mentioned background technology.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A protection device installed in an intermediate relay, comprising:

[0008] Relay body and base plate;

[0009] The relay body is mounted on the bottom plate;

[0010] Protective structures;

[0011] The protection structure includes a protection plate and a cover plate arranged outside the relay body, the protection plate is arranged outside the relay in a square shape, and the protection plate and the bottom plate are integrally formed, and the cover plate is installed on the top opening of the protection plate by fixing screws to facilitate later operation and maintenance;

[0012] Wire harness holes are provided on the two opposite side walls of the protective plate, which correspond to the contacts of the relay body. The wire harness holes are used for the wire harness to pass through and connect to the contacts of the relay body. Heat dissipation gaps are provided on the other two side walls of the protective plate, and dust filters are installed in the heat dissipation gaps.

[0013] Preferably, a card slot is provided at the top ring of the protective plate, and the card slot is matched with the cover plate.

[0014] Preferably, the cover plate is symmetrically provided with through holes for the fixing screws to pass through, and the inner bottom of the slot is provided with screw holes corresponding to the through holes for the fixing screws to be installed.

[0015] Preferably, a mounting hole is provided on the bottom plate, and the mounting hole is used to mount and fix the relay body.

[0016] Preferably, it also includes a positioning structure to prevent the wiring harness from loosening, the positioning structure and the wiring harness hole correspond one to one, the positioning structure includes a lower positioning block and an upper positioning block, arc-shaped slots are correspondingly provided at the top of the lower positioning block and the bottom of the upper positioning block, and anti-slip rubber strips are distributed on the inner walls of the slots.

[0017] Preferably, a connecting rod is provided on the top of the upper positioning block, the connecting rod is slidably inserted in the cover plate, and a limiting block is provided on the upper end of the connecting rod, and a compression spring is sleeved on the connecting rod between the upper positioning block and the cover plate.

[0018] Compared with the prior art, the beneficial effects of the utility model are:

[0019] The utility model installs the relay body on the bottom plate, arranges a protective plate on the bottom plate to form an enclosing protection for the relay body, arranges a wiring harness hole and a heat dissipation gap with a dustproof filter on the protective plate, and arranges a cover plate on the protective plate. The device has a simple structure and is easy to use. The arrangement of the protective structure can protect the relay body while ensuring the heat dissipation capacity, can avoid external collision damage and can prevent dust from easily contacting the relay body, and provides a good environment for the operation of the relay. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the utility model;

[0021] Figure 2 This is a schematic structural view of the protective plate of the present utility model;

[0022] Figure 3 This is a schematic structural view of the top cover of the present utility model;

[0023] Figure 4 This is a schematic structural view of the upper positioning block of the present utility model.

[0024] In the figure: 1. Base plate; 2. Fixed hole; 3. Protective plate; 4. Dust-proof filter; 5. Wiring harness hole; 6. Heat shrinkable tube; 7. Card slot; 8. Screw hole; 9. Cover plate; 10. Through hole; 11. Relay body; 12. Mounting hole; 13. Lower positioning block; 14. Upper positioning block; 15. Link rod; 16. Limiting block; 17. Compression spring. Specific implementation manners

[0025] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0026] Please refer to Figures 1 - 3 , the present utility model provides a technical solution:

[0027] A protection device for the installation of an intermediate relay, comprising:

[0028] The relay body 11 and the base plate 1; the relay body 11 is installed on the base plate 1;

[0029] A protection structure; the protection structure includes a protective plate 3 and a cover plate 9 arranged outside the relay body 11. The protective plate 3 is arranged in a square shape to surround the relay, and the protective plate 3 and the base plate 1 are integrally formed. The cover plate 9 is installed on the top opening of the protective plate 3 through fixing screws for later operation and maintenance. Wiring harness holes 5 are opened on the opposite two side walls of the protective plate 3. The wiring harness holes 5 correspond to the contacts of the relay body 11. The wiring harness holes 5 are for the wiring harness to pass through and connect the contacts of the relay body 11. Heat dissipation gaps are opened on the other two side walls of the protective plate 3, and dust-proof filters 4 are installed in the heat dissipation gaps.

[0030] By installing the relay body 11 on the bottom plate 1, a protective plate 3 is arranged on the bottom plate 1 to form an enclosing protection for the relay body 11. A wire harness hole 5 and a heat dissipation notch with a dust-proof filter 4 are arranged on the protective plate 3. A cover plate 9 is arranged on the protective plate 3. During use, the relay body 11 is installed on the bottom plate 1. After wiring the relay body 11, the cover plate 9 is installed on the top of the protective plate 3. After the wire harness passes through the wire harness hole 5 to connect the relay contacts, a relatively sealed environment can be formed through the heat shrinkable tube 6 outside the wire harness hole 5, so that the device can not only form a good protection function for the relay body 11 but also prevent the relay body 11 from being easily contacted by external dust.

[0031] For more specific details, please refer to Figures 2 - 3 :

[0032] A clamping groove 7 is arranged at the top ring of the protective plate 3, and the clamping groove 7 is adapted to the cover plate 9. Through holes 10 for fixing screws to pass through are symmetrically arranged on the cover plate 9, and screw holes 8 for installing the fixing screws corresponding to the through holes 10 are arranged at the inner bottom of the clamping groove 7. Mounting holes 12 are arranged on the bottom plate 1, and the mounting holes 12 are used for installing and fixing the relay body 11.

[0033] The clamping groove 7 at the top of the protective plate 3 can facilitate the positioning and installation of the cover plate 9. After the cover plate 9 is clamped into the clamping groove 7, it can be fixed with fixing screws.

[0034] Generally speaking, the device has a simple structure and is easy to use. Through the setting of the protection structure, it can protect the relay body 11 while ensuring the heat dissipation ability, avoiding both external collision damage and easy contact of the relay body 11 with dust, providing a good environment for the operation of the relay.

[0035] Furthermore, please refer to Figures 3 - 4 :

[0036] It also includes a positioning structure for preventing the wire harness from loosening. The positioning structure corresponds to the wire harness hole 5 one by one. The positioning structure includes a lower positioning block 13 and an upper positioning block 14. Arc-shaped clamping grooves 7 are correspondingly arranged at the top of the lower positioning block 13 and the bottom of the upper positioning block 14, and anti-slip rubber strips are distributed on the inner wall of the clamping groove 7. A connecting rod 15 is arranged at the top of the upper positioning block 14. The connecting rod 15 is slidably inserted into the cover plate 9, and a limiting block 16 is arranged at the upper end of the connecting rod 15. A compression spring 17 is sleeved on the connecting rod 15 between the upper positioning block 14 and the cover plate 9.

[0037] By setting the positioning structure including the lower positioning block 13 and the upper positioning block 14, after the wire harness connection is completed and the cover plate 9 is installed, the cooperation of the upper positioning block 14, the lower positioning block 13 and the compression spring 17 at the bottom of the cover plate 9 can clamp and position the wire harness, thus preventing the wire harness from easily coming off and further improving the practicality of the device.

[0038] Among them, fixing holes 2 are symmetrically formed on the bottom plate 1. During use, the bottom plate 1 is installed inside the control panel, in the electrical cabinet, or directly installed on the machine or device. The specific position should ensure compliance with safety regulations and the functional requirements of the circuit, so as to be able to receive signals from the main controller and control the corresponding load. A notch is formed on the bottom plate 1 for connection to the control signal source.

[0039] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present invention.

Claims

1. A protection device for the installation of an intermediate relay, characterized in that, Comprising: A relay body (11) and a base plate (1); The relay body (11) is mounted on the base plate (1); A protection structure; The protection structure includes a protection plate (3) and a cover plate (9) disposed outside the relay body (11). The protection plate (3) is arranged in a square shape to surround the relay externally, and the protection plate (3) and the base plate (1) are integrally formed. The cover plate (9) is installed on the top opening of the protection plate (3) through fixing screws for convenient later operation and maintenance; On opposite side walls of the protection plate (3), wire harness holes (5) are provided. The wire harness holes (5) correspond to the contacts of the relay body (11). The wire harness holes (5) are for the wire harness to pass through and connect the contacts of the relay body (11). On the other two side walls of the protection plate (3), heat dissipation notches are provided, and dust-proof filters (4) are installed in the heat dissipation notches.

2. The protection device for the installation of an intermediate relay according to claim 1, characterized in that: A clamping groove (7) is provided at the top circular opening of the protection plate (3), and the clamping groove (7) is adapted to the cover plate (9).

3. The protection device for installing an intermediate relay according to claim 2, characterized in that: Through holes (10) for the fixing screws to pass through are symmetrically provided on the cover plate (9), and screw holes (8) corresponding to the through holes (10) for installing the fixing screws are provided at the inner bottom of the clamping groove (7).

4. The protection device for installing an intermediate relay according to claim 1, wherein: Mounting holes (12) are provided on the base plate (1), and the mounting holes (12) are used for mounting and fixing the relay body (11).

5. The protection device for the installation of an intermediate relay according to claim 1, characterized in that: It further includes a positioning structure for preventing the wire harness from loosening. The positioning structure corresponds to the wire harness holes (5) one by one. The positioning structure includes a lower positioning block (13) and an upper positioning block (14). Arc-shaped clamping grooves (7) are correspondingly provided at the top of the lower positioning block (13) and the bottom of the upper positioning block (14), and anti-slip rubber strips are distributed on the inner wall of the clamping groove (7).

6. The protection device for the installation of an intermediate relay according to claim 5, characterized in that: A connecting rod (15) is provided at the top of the upper positioning block (14). The connecting rod (15) is slidably inserted into the cover plate (9), and a limiting block (16) is provided at the upper end of the connecting rod (15). A compression spring (17) is sleeved on the connecting rod (15) between the upper positioning block (14) and the cover plate (9).

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