Protective relay

Abstract

The utility model provides a protective relay, which comprises a shell, and a control panel and a power panel which are arranged in the shell up and down, a first mounting structure and a second mounting structure which are used for mounting the control panel and the power panel are respectively arranged in the shell, the first mounting structure comprises a plurality of first positioning bumps and a plurality of first supporting blocks, and the second mounting structure comprises a plurality of second positioning bumps and a plurality of second supporting blocks, the first supporting blocks are arranged on the inner wall of the shell and abut against the top face edge and the bottom face edge of the control panel respectively, and each first supporting block is provided with a guide inclined face arranged at the front end of the insertion direction of the control panel and a supporting face used for abutting against the bottom face of the control panel; the second mounting structure comprises a plurality of second positioning bumps which are arranged on the inner wall of the shell and are used for abutting against the edge of the top surface of the power panel; and the bottom plate is detachably installed at the lower opening of the shell, and the edge of the bottom plate is provided with a plurality of second supporting blocks abutting against the bottom face of the power panel. According to the structure, the control panel and the power panel are fast and convenient to install and are firmly installed with the shell.

Description

Technical Field

[0001] The utility model relates to the technical field of low-voltage electrical appliances, in particular to a protection relay. Background Art

[0002] A time relay is a relay whose output circuit will change in a jump-like manner after a specified accurate time has passed after the input action signal is added (or removed). Existing time relays include a housing, and a power board and a control board installed in the housing. Currently, the power board and the control board have the defects of being cumbersome to install and not being firmly installed. Utility Model Content

[0003] Therefore, the technical problem to be solved by the utility model is to overcome the defects of the power board and the control board in the prior art that the installation is relatively cumbersome and the installation is not firm, so as to provide a protective relay that is quick, convenient and firmly installed.

[0004] To this end, the utility model provides a protection relay, including a shell, and a control board and a power board arranged in the shell and arranged up and down, the shell is respectively provided with a first mounting structure and a second mounting structure for mounting the control board and the power board, the first mounting structure includes: a plurality of first positioning protrusions and a plurality of first supporting blocks, which are arranged on the inner wall of the shell and respectively abut against the top edge and bottom edge of the control board, the first supporting block having a guiding inclined surface arranged at the front end of the control board in the insertion direction, and a supporting surface for abutting against the bottom surface of the control board; the second mounting structure includes: a plurality of second positioning protrusions, which are arranged on the inner wall of the shell and are used to abut against the top edge of the power board; a bottom plate, which is detachably mounted at the lower opening of the shell, and the edge of the bottom plate is provided with a plurality of second supporting blocks abutting against the bottom surface of the power board.

[0005] Terminal blocks are arranged on both sides of the power board, and hollow positioning columns are arranged on the inner wall of the shell body to abut against the top surface of the terminal blocks.

[0006] The bottom plate is mounted on the shell through a clamping structure, and the clamping structure includes a plurality of clamping holes arranged on the inner wall of the shell, and a clamping block arranged on the bottom plate and adapted to be clamped with the clamping holes.

[0007] A limiting structure is provided between the bottom plate and the shell, and the limiting structure comprises a limiting groove provided at the bottom of the shell, and a limiting block provided on the bottom plate and abutting against the limiting groove.

[0008] The control board is connected to the power board through a flexible wire.

[0009] It also includes a cover plate arranged on the top of the shell and suitable for covering the control panel. The cover plate is assembled with the shell through an elastic hook structure. The elastic hook structure includes a hook block arranged on the inner wall of the shell, and an elastic hook arranged on the bottom of the cover plate and adapted to be connected with the hook block.

[0010] The control panel is provided with at least one LED lamp, and the cover plate is provided with a light guide column corresponding to the LED lamp.

[0011] The technical solution of the utility model has the following advantages:

[0012] 1. When assembling the protection relay provided by the utility model, the housing is first inverted, and the control board is installed from the lower opening of the housing. After the control board is inserted along the guide inclined surface of the first support block, its top surface abuts against the first positioning protrusion, and the bottom surface abuts against the supporting surface of the first support block. Then the power board is installed, the power board abuts against the second positioning protrusion, and finally the bottom plate is installed, thereby limiting the installation position of the power board. The above structure makes the control board and the power board quick and convenient to install, and they are firmly installed with the housing.

[0013] 2. The protection relay provided by the utility model has terminal blocks on both sides of the power board, and a hollow positioning column abutting against the top surface of the terminal block is provided on the inner wall of the shell, so as to better limit the installation position of the power board.

[0014] 3. The protection relay provided by the utility model has a limit structure between the bottom plate and the housing, and the limit structure includes a limit groove provided at the bottom of the housing, and a limit block provided on the bottom plate and abutting against the limit groove. In actual use, excessive pressure may cause the bottom plate to deform inwards of the housing, and by providing a limit block to cooperate with the limit groove that can be lifted, the installation position of the bottom plate can be limited. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 A three-dimensional diagram of the protection relay of the utility model;

[0017] Figure 2 is a first cross-sectional view of a protection relay;

[0018] Figure 3 is a second cross-sectional view of the protection relay;

[0019] Figure 4 Schematic diagram of explosion protection relay;

[0020] Figure 5 It is an exploded schematic diagram of the shell and the bottom plate;

[0021] Figure 6 is a three-dimensional image of the base plate;

[0022] Figure 7 It is a three-dimensional diagram of the cover plate and the control panel.

[0023] Explanation of the accompanying drawings: 1. Shell; 2. Control board; 3. Power board; 4. First positioning protrusion; 5. First support block; 6. Guide slope; 7. Support surface; 8. Second positioning protrusion; 9. Bottom plate; 10. Second support block; 11. Terminal block; 12. Positioning column; 13. Card hole; 14. Card block; 15. Limiting groove; 16. Limiting block; 17. Cover plate; 18. Hook block; 19. Elastic hook; 20. LED lamp; 21. Light guide column. DETAILED DESCRIPTION

[0024] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0026] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0028] Example

[0029] This embodiment provides a protection relay such as Figure 1 and Figure 4 As shown, it includes a housing 1, a control board 2, a power board 3, a bottom plate 9 and a cover plate 17.

[0030] like Figure 3 As shown, the control board 2 and the power board 3 are arranged in the housing 1 in an upper and lower manner. The control board 2 is connected to the power board 3 through a soft wire (not shown in the figure). The control board 2 is provided with a plurality of LED lights 20 and a potentiometer. The power board 3 is provided with terminal blocks 11 on both sides of the length direction.

[0031] The housing 1 is provided with a first mounting structure and a second mounting structure for mounting the control board 2 and the power board 3, respectively. Figure 2 and Figure 3 As shown, the first mounting structure includes: a plurality of first positioning protrusions 4 and a plurality of first supporting blocks 5, which are arranged on the inner wall of the housing 1 and respectively abut against the top edge and bottom edge of the control board 2, the first supporting block 5 having a guiding inclined surface 6 arranged at the front end of the insertion direction of the control board 2, and a supporting surface 7 for abutting against the bottom surface of the control board 2; the second mounting structure includes: a plurality of second positioning protrusions 8, which are arranged on the inner wall of the housing 1 and abut against the top edge of the power board 3; a bottom plate 9, which is detachably mounted at the lower opening of the housing 1, and the edge of the bottom plate 9 is provided with a plurality of second supporting blocks 10 abutting against the bottom surface of the power board 3. A hollow positioning column 12 abutting against the top surface of the terminal block 11 is provided on the inner wall of the housing 1.

[0032] The bottom plate 9 is mounted on the housing 1 through a snap-fit ​​structure. Figure 5 and Figure 6 As shown, the clamping structure includes a plurality of clamping holes 13 provided on the inner wall of the housing 1, and a clamping block 14 provided on the bottom plate 9 and adapted to clamp with the clamping holes 13. A limiting structure is provided between the bottom plate 9 and the housing 1, and the limiting structure includes limiting grooves 15 provided on both sides of the bottom of the housing 1, and limiting blocks 16 provided on both sides of the bottom plate 9 in the width direction and abutting against the limiting grooves 15.

[0033] The cover plate 17 is detachably mounted on the top of the housing 1 and is suitable for shielding the control panel 2. The cover plate 17 is assembled with the housing 1 through an elastic hook structure. Figure 5As shown, the elastic hook structure includes a hook block 18 disposed on the inner wall of the housing 1, and an elastic hook 19 disposed at the bottom of the cover plate 17 and adapted to be connected to the hook block 18. Figure 7 As shown, the cover plate 17 is provided with a light guide column 21 corresponding to the LED lamp 20 .

[0034] When assembling the protection relay provided by the utility model, the housing 1 is first inverted, and the control board 2 is installed from the lower opening of the housing 1. After the control board 2 is inserted along the guide inclined surface 6 of the first supporting block 5, its top surface abuts against the first positioning protrusion 4, and the bottom surface abuts against the supporting surface 7 of the first supporting block 5. Then the power board 3 is installed, and the power board 3 abuts against the second positioning protrusion 8. Finally, the bottom plate 9 is installed to limit the installation position of the power board 3. The above structure makes it quick and convenient to install the control board 2 and the power board 3, and they are firmly installed with the housing.

[0035] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention of the utility model.

Claims

1. A protection relay, comprising a housing (1), and a control board (2) and a power board (3) arranged in the housing (1) and arranged up and down, characterized in that: The housing (1) is provided with a first mounting structure and a second mounting structure for mounting the control board (2) and the power board (3), respectively, wherein the first mounting structure comprises: A plurality of first positioning protrusions (4) and a plurality of first supporting blocks (5) are arranged on the inner wall of the housing (1) and respectively abut against the top edge and the bottom edge of the control board (2); the first supporting block (5) has a guiding inclined surface (6) arranged at the front end of the control board (2) in the insertion direction, and a supporting surface (7) for abutting against the bottom surface of the control board (2); The second mounting structure comprises: A plurality of second positioning protrusions (8) are arranged on the inner wall of the housing (1) and are used to abut against the top edge of the power board (3); A bottom plate (9) is detachably mounted at the lower opening of the housing (1), and a plurality of second support blocks (10) are provided on the edge of the bottom plate (9) and abut against the bottom surface of the power board (3).

2. The protection relay according to claim 1, characterized in that: Terminal blocks (11) are provided on both sides of the power board (3), and hollow positioning columns (12) abutting against the top surfaces of the terminal blocks (11) are provided on the inner wall of the housing (1).

3. The protection relay according to claim 1 or 2, characterized in that: The base plate (9) is mounted on the housing (1) via a snap-fit ​​structure, wherein the snap-fit ​​structure comprises a plurality of snap-fit ​​holes (13) provided on the inner wall of the housing (1), and snap-fit ​​blocks (14) provided on the base plate (9) and adapted to snap-fit ​​with the snap-fit ​​holes (13).

4. The protection relay according to claim 1, characterized in that: A limiting structure is provided between the bottom plate (9) and the shell (1), the limiting structure comprising a limiting groove (15) provided at the bottom of the shell (1), and a limiting block (16) provided on the bottom plate (9) and abutting against the limiting groove (15).

5. The protection relay according to claim 1, characterized in that: The control board (2) is connected to the power board (3) via a flexible wire.

6. The protection relay according to claim 1, characterized in that: It also includes a cover plate (17) disposed on the top of the shell (1) and suitable for covering the control panel (2); the cover plate (17) is assembled with the shell (1) via an elastic hook structure; the elastic hook structure includes a hook block (18) disposed on the inner wall of the shell (1), and an elastic hook (19) disposed on the bottom of the cover plate (17) and adapted to be connected to the hook block (18).

7. The protection relay according to claim 6, characterized in that: The control panel (2) is provided with at least one LED lamp (20), and the cover plate (17) is provided with a light guide column (21) corresponding to the LED lamp (20).

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