A protection mechanism for a density relay

Abstract

This utility model discloses a protective mechanism for a density relay, including a density relay body. The density relay body has an internal mounting groove, and an elastic component is disposed within the mounting groove. An mounting plate is disposed within the density relay body via the elastic component. A fixing post is fixedly disposed on one side of the mounting plate. The density relay body also has an internal connecting groove, and a pushing component is disposed within the connecting groove. The protective shell pushes the fixing post, causing the mounting plate to move. When the protective shell contacts the density relay body, the elastic component, through the mounting plate, drives the fixing post to insert into the fixing groove, thereby fixing the position of the protective shell. This allows the density relay body to be protected by the protective shell. Installation is achieved simply by pushing the protective shell, avoiding the cumbersome installation steps caused by bolt fixing and reducing installation time.

Description

Technical Field

[0001] This utility model relates to the field of density relay technology, and in particular to a protective mechanism for density relays. Background Technology

[0002] A density relay is an electrical control device that causes a predetermined step change in the controlled quantity in the electrical output circuit when the change in the input quantity (excitation quantity) reaches a specified requirement. It has an interactive relationship between the control system (also known as the input circuit) and the controlled system (also known as the output circuit). It is usually used in automated control circuits. In fact, it is an "automatic switch" that uses a small current to control a large current operation. Therefore, it plays a role in automatic adjustment, safety protection, and circuit switching in the circuit.

[0003] Existing density relays, in order to meet market demands, are generally optimized in terms of how to better detect and how to make them more convenient for users to use. However, they often neglect whether the protective cover can be installed quickly. In normal use, a protective cover is usually installed on the top of the relay for protection, which is usually directly fixed with bolts. However, tightening the screws requires tools and each bolt needs to be tightened one by one, which increases the installation time of the protective cover and makes the installation of the protective cover too cumbersome. Based on the above problems, this application proposes a protective mechanism for density relays. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a protective mechanism for density relays, which solves the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A protective mechanism for a density relay includes a density relay body, an internal mounting groove, an elastic component inside the mounting groove, a mounting plate inside the density relay body via the elastic component, a fixing post fixedly mounted on one side of the mounting plate, a internal connecting groove, a pushing component inside the connecting groove, a protective shell overlapping inside the density relay body, a fixing groove penetrating the surface of the protective shell, and the fixing post located inside the fixing groove.

[0007] Preferably, the elastic component includes a guide post fixedly installed inside the mounting groove, a sliding plate slidably disposed on the surface of the guide post, the sliding plate being slidably disposed inside the mounting groove, a spring fixedly disposed on one side of the sliding plate, the end of the spring away from the sliding plate being fixedly installed inside the mounting groove, and the top of the sliding plate being fixedly installed at the bottom of the mounting plate.

[0008] Preferably, the pushing assembly includes a pushing plate slidably disposed inside the connecting groove, the pushing plate being fixedly installed at the bottom of the mounting plate, a sliding rod being fixedly disposed on one side of the pushing plate, the sliding rod being slidably disposed inside the density relay body, a pressing plate being fixedly disposed at the end of the sliding rod away from the pushing plate, and an anti-slip pad being fixedly disposed at the end of the pressing plate away from the sliding rod.

[0009] Preferably, the protective shell has a circular hole through its surface, and the protective shell is made of transparent acrylic sheet material.

[0010] Preferably, there are several fixing columns and several fixing slots, and the fixing columns and several fixing slots are symmetrically distributed. The fixing columns have a triangular structure, and the upper sidewall of the fixing slot is an arc-shaped surface.

[0011] Preferably, the number of circular holes is several, and the several circular holes are symmetrically distributed.

[0012] Preferably, the surface of the density relay body is provided with a sliding hole for sliding the sliding rod, and the sliding hole is connected to the connecting groove.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: The density relay uses a protective mechanism that pushes the fixing column through the protective shell to move the mounting plate. When the protective shell comes into contact with the density relay body, the elastic component drives the fixing column through the mounting plate to insert into the fixing groove, thereby fixing the position of the protective shell. The density relay body can be protected by the protective shell, and the protective shell can be directly pushed to install it, avoiding the troublesome installation steps caused by fixing the protective shell with bolts, and reducing the installation time of the protective shell. Attached Figure Description

[0014] Figure 1 This is an isometric drawing of the structure of this utility model;

[0015] Figure 2 This is a right sectional view of the structure of this utility model;

[0016] Figure 3 for Figure 2 Enlarged view of the structure at point A;

[0017] Figure 4 This is another right sectional view of the structure of this utility model;

[0018] Figure 5 for Figure 4 Enlarged view of the structure at point B;

[0019] Figure 6 This is a schematic diagram of the protective shell structure of this utility model.

[0020] In the diagram: 1. Density relay body; 2. Mounting slot; 3. Guide post; 4. Sliding plate; 5. Spring; 6. Mounting plate; 7. Fixing post; 8. Connecting slot; 9. Push plate; 10. Sliding rod; 11. Circular hole; 12. Pressing plate; 13. Anti-slip pad; 14. Protective housing; 15. Fixing slot. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Reference Figure 1-6A protective mechanism for a density relay includes a density relay body 1. The density relay body 1 has a mounting groove 2 inside, and an elastic component is disposed inside the mounting groove 2. A mounting plate 6 is disposed inside the density relay body 1 via the elastic component. A fixing post 7 is fixedly disposed on one side of the mounting plate 6. The density relay body 1 has a connecting groove 8 inside, and a pushing component is disposed inside the connecting groove 8. A protective shell 14 is overlapped inside the density relay body 1. Circular holes 11 are provided through the surface of the protective shell 14. The protective shell 14 is made of transparent acrylic sheet material. The number of circular holes 11 is several, and the several circular holes 11 are symmetrically arranged. The protective housing 14, through the circular hole 11, allows the bolts to be rotated to secure the connector wire without removing the housing 14. The circular hole 11 also provides comprehensive protection for the density relay body 1. The transparent acrylic sheet provides sufficient protective strength to the housing 14, while allowing observation of the density relay body 1 through it. The surface of the housing 14 has through-holes 15 for fixing. There are multiple fixing posts 7 and fixing slots 15, symmetrically distributed, allowing the mounting plate 6 to provide protection through the fixing posts 7 and fixing slots 15. The outer shell 14 is more securely fixed, preventing it from falling off during use. The fixing post 7 has a triangular structure, and the upper side wall of the fixing groove 15 is curved, facilitating the movement of the fixing post 7 by the fixing groove 15. This allows the protective shell 14 to be fixed by direct pressing without any other steps, making installation faster and more convenient. The fixing post 7 is located inside the fixing groove 15. The elastic component includes a guide post 3 fixedly installed inside the mounting groove 2. A sliding plate 4 slides on the surface of the guide post 3, and the sliding plate 4 is slidably disposed inside the mounting groove 2. A spring 5 is fixedly installed on one side of the sliding plate 4. The end of the protective housing 14 away from the sliding plate 4 is fixedly installed inside the mounting groove 2. The top of the sliding plate 4 is fixedly installed at the bottom of the mounting plate 6. When the bottom of the protective housing 14 or the inside of the fixing groove 15 pushes the fixing post 7 to move, the mounting plate 6 pushes the sliding plate 4 to compress the spring 5, thereby allowing the protective housing 14 to move downward. When the protective housing 14 is fully in contact with the density relay body 1, the fixing post 7 is inserted into the corresponding fixing groove 15, thereby fixing the protective housing 14 and installing it. In this process, it is only necessary to push the protective housing 14 downward to complete the installation, making the installation process of the protective housing 14 simpler.

[0023] Specifically, the pushing assembly includes a pushing plate 9 slidably disposed inside the connecting groove 8. The pushing plate 9 is fixedly installed on the bottom of the mounting plate 6. A sliding rod 10 is fixedly disposed on one side of the pushing plate 9. The sliding rod 10 is slidably disposed inside the density relay body 1. A sliding hole for sliding the sliding rod 10 is provided through the surface of the density relay body 1. The sliding hole is connected to the connecting groove 8. The sliding hole facilitates the insertion of the sliding rod 10 into the connecting groove 8 and connecting it with the pushing plate 9, thereby facilitating the sliding rod 10 to drive the pushing plate 9 to move. A pressing plate 12 is fixedly disposed at the end of the sliding rod 10 away from the pushing plate 9. The pressing plate 12 is away from the sliding plate 9. An anti-slip pad 13 is fixedly installed at one end of the rod 10. When it is necessary to disassemble the protective shell 14, the anti-slip pad 13 pushes the pressing plate 12 to move, so that the pressing plate 12 drives the pushing plate 9 to slide inside the connecting groove 8 through the sliding rod 10, so that the pushing plate 9 drives the mounting plate 6 to move, so that the mounting plate 6 drives the fixing column 7 to move out of the fixing groove 15, and pulls the protective shell 14, so that the protective shell 14 can be removed from the density relay body 1. This makes it convenient to maintain the inside of the density relay body 1 and to replace the damaged protective shell 14, avoiding the time wasted in replacing the protective shell 14.

[0024] In use: Insert the protective housing 14 into the density relay body 1, causing the bottom of the density relay body 1 to push the inclined surface of the fixing post 7, which in turn pushes the mounting plate 6 to move. This causes the mounting plate 6 to slide the sliding plate 4 on the surface of the guide post 3, compressing the spring 5. When the fixing post 7 is horizontally aligned with the fixing groove 15, the spring 5 rebounds, pushing the sliding plate 4 to reset the mounting plate 6, allowing the fixing post 7 to insert into the fixing groove 15. Continue pushing the protective housing 14 downward, causing the fixing groove 15 to push the fixing post 7 to move the mounting plate 6. This brings the bottom of the protective housing 14 into contact with the density relay body 1, ensuring that the fixing post 7 is fully inserted into the fixing groove 15, thus fixing the position of the protective housing 14 and protecting the density relay body 1.

[0025] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0026] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A protective mechanism for a density relay, comprising a density relay body (1), characterized in that, The density relay body (1) has an installation groove (2) inside, and an elastic component is provided inside the installation groove (2). The density relay body (1) has an installation plate (6) provided inside through the elastic component. A fixing post (7) is fixedly provided on one side of the installation plate (6). The density relay body (1) has a connection groove (8) inside, and a pushing component is provided inside the connection groove (8). A protective shell (14) is overlapped inside the density relay body (1). A fixing groove (15) is provided through the surface of the protective shell (14). The fixing post (7) is located inside the fixing groove (15).

2. The protective mechanism for a density relay according to claim 1, characterized in that, The elastic component includes a guide post (3) fixedly installed inside the mounting groove (2), a sliding plate (4) sliding on the surface of the guide post (3), the sliding plate (4) slidingly disposed inside the mounting groove (2), a spring (5) fixedly disposed on one side of the sliding plate (4), the end of the spring (5) away from the sliding plate (4) fixedly installed inside the mounting groove (2), and the top of the sliding plate (4) fixedly installed at the bottom of the mounting plate (6).

3. The protective mechanism for a density relay according to claim 1, characterized in that, The pushing assembly includes a pushing plate (9) that is slidably disposed inside the connecting groove (8). The pushing plate (9) is fixedly installed at the bottom of the mounting plate (6). A sliding rod (10) is fixedly disposed on one side of the pushing plate (9). The sliding rod (10) is slidably disposed inside the density relay body (1). A pressing plate (12) is fixedly disposed at the end of the sliding rod (10) away from the pushing plate (9). An anti-slip pad (13) is fixedly disposed at the end of the pressing plate (12) away from the sliding rod (10).

4. The protective mechanism for a density relay according to claim 1, characterized in that, The protective shell (14) has a circular hole (11) through its surface, and the protective shell (14) is made of transparent acrylic sheet material.

5. A protective mechanism for a density relay according to claim 1, characterized in that, The number of fixed columns (7) and fixed grooves (15) is several, and the several fixed columns (7) and several fixed grooves (15) are symmetrically distributed. The fixed columns (7) have a triangular structure, and the upper sidewall of the fixed grooves (15) is an arc surface.

6. A protective mechanism for a density relay according to claim 4, characterized in that, The number of circular holes (11) is several, and the several circular holes (11) are symmetrically distributed.

7. A protective mechanism for a density relay according to claim 3, characterized in that, The density relay body (1) has a sliding hole through which the sliding rod (10) slides, and the sliding hole is connected to the connecting groove (8).

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