Loop protection relay module

Abstract

The utility model discloses a loop protection relay module, which comprises a horizontally arranged circuit board, the upper surface of the circuit board is provided with a plurality of electrical components, four corners of the circuit board are respectively provided with an assembly hole in a penetrating manner, and the loop protection relay module is characterized in that the four corners of the upper surface of the circuit board are respectively provided with an elastic buffer ring; the four assembly holes are located in the inner sides of the corresponding buffer rings respectively, and nuts of the fastening screws can be tightly pressed on the buffer rings. According to the utility model, the risk that the circuit board is fractured by the nut of the fastening screw can be reduced, thereby ensuring the normal use of the relay module.

Description

TECHNICAL FIELD

[0001] The utility model relates to the relay field especially relates to a loop protection relay module. BACKGROUND

[0002] Loop protection relay is a kind of relay, usually applied in the control circuit of automation, plays the role of automatic regulation, safety protection, conversion circuit in circuit. Relay module is an important component of relay, it has the ability of control ladder and controlled system, the main function is to control larger current with smaller current, realizes the protection of circuit.

[0003] The relay module in the related art usually includes circuit board, a plurality of electrical elements are arranged on the circuit board, assembly holes for fastening screw to pass through are arranged at four corners of the circuit board, so that the relay module can be fixed in the relay shell by four fastening screws.

[0004] However, the circuit board in the related art is usually fixed in the relay shell by the nut of fastening screw, if fastening screw is over-tightened, the nut of fastening screw will extrude the circuit board excessively, so that there is the risk of circuit board cracking, thereby affecting the use of relay module, and improvement is needed. UTILITY MODEL CONTENTS

[0005] In view of the deficiencies in the prior art, the purpose of the utility model is to provide a loop protection relay module, which can reduce the risk of circuit board cracking and ensure normal use of the relay module.

[0006] The above technical purpose of the utility model is realized by the following technical scheme: a loop protection relay module, comprising a horizontally arranged circuit board, a plurality of electrical elements are arranged on the upper surface of the circuit board, assembly holes are arranged at four corners of the circuit board respectively, and the upper surface of the circuit board is provided with elastic buffer rings at four corners respectively, four assembly holes are respectively located on the inner side of the corresponding buffer ring, and the nut of fastening screw can be pressed on the buffer ring.

[0007] In a preferred example, the utility model can be further configured as: each assembly hole is fixedly connected with a supporting cylinder, the supporting cylinder is arranged along the circumference of the buffer ring, and the supporting cylinder is made of hard plastic, and the inner side wall of each supporting cylinder is provided with an inner thread matched with the fastening screw, so that the fastening screw can be threadedly connected with the supporting cylinder.

[0008] In a preferred example, the utility model can be further configured as: the top of each supporting cylinder is integrally connected with a supporting ring, and four buffer rings are fixed on the corresponding supporting rings.

[0009] The utility model discloses in a preferable example can be further configured as: support ring fixedly embedded on the circuit board, and the upper surface of support ring is flush with the upper surface of circuit board.

[0010] The utility model discloses in a preferable example can be further configured as: four top corner positions of circuit board are fixedly connected with the L-shaped elastic protection strip respectively.

[0011] The utility model discloses in a preferable example can be further configured as: the middle position of circuit board lower surface is vertically fixedly connected with the elastic support column, and the support column can be butt joint with the bottom side wall of relay shell.

[0012] In conclusion, the utility model has following beneficial effect:

[0013] 1. by setting up elastic buffer ring at the four corners of circuit board respectively, utilize the process that fastening screw is used to the fixed process of circuit board, and the nut of fastening screw is pressed on buffer ring, realize the isolation of the nut of fastening screw and circuit board, simultaneously, buffer ring can take place elastic deformation, and absorb part of acting force, thereby reduce the risk that the nut of fastening screw cracks circuit board, guarantee relay module normal use;

[0014] 2. by setting up elastic protection strip at four top corner positions of circuit board respectively, realize the protection of four top corner positions of circuit board, reduce the risk that four top corner positions of circuit board break, thereby improve use stability. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is the structural schematic diagram of example;

[0016] Figure 2 It is the front view of example;

[0017] Figure 3 It is Figure 2 The enlarged schematic diagram of A area in.

[0018] Fig. 1, circuit board;2, electric element;3, assembly hole;4, support cylinder;5, internal thread;6, support ring;7, buffer ring;8, protection strip;9, support column. DETAILED DESCRIPTION

[0019] The utility model will be further explained in detail in combination with the drawings.

[0020] Refer to Figure 1 , Figure 2 A kind of circuit protection relay module, including horizontally arranged circuit board 1, the upper surface of circuit board 1 is provided with multiple electric elements 2, and four corners of circuit board 1 are respectively penetrated and are provided with assembly hole 3 for fastening screw to pass.

[0021] Referring to Figure 2 , Figure 3 , each assembly hole 3 is fixedly connected with a support cylinder 4, the support cylinder 4 is arranged along the circumference of the assembly hole 3, and the support cylinder 4 is made of hard plastic. At the same time, the inner side wall of each support cylinder 4 is provided with an internal thread 5 matched with the fastening screw, so that the fastening screw can be threadedly connected with the support cylinder 4.

[0022] Referring to Figure 2 , Figure 3 , the top of each support cylinder 4 is integrally connected with a support ring 6, and the four corners of the upper surface of the circuit board 1 are respectively provided with elastic buffer rings 7, the four buffer rings 7 are respectively fixed on the corresponding support rings 6, and the screw cap of the fastening screw can be pressed on the buffer ring 7.

[0023] By arranging the elastic buffer ring 7 at the four corners of the circuit board 1, the screw cap of the fastening screw is pressed on the buffer ring 7 during the process of fixing the circuit board 1 by the fastening screw, so as to realize the isolation of the screw cap of the fastening screw and the circuit board 1. At the same time, the buffer ring 7 can be elastically deformed and absorb part of the acting force, thereby reducing the risk of the screw cap of the fastening screw cracking the circuit board 1, and ensuring the normal use of the relay module.

[0024] Moreover, the buffer ring 7 is fixedly connected with the support ring 6, and the support cylinder 4 and the support ring 6 bear the pressing force of the fastening screw, further reducing the risk of the circuit board 1 being cracked. At the same time, the support cylinder 4 is provided with an internal thread 5, which improves the anti-backout effect of the fastening screw, thereby improving the connection stability of the relay module and the relay shell.

[0025] Referring to Figure 2 , Figure 3 , the support ring 6 is fixedly embedded on the circuit board 1, and the upper surface of the support ring 6 is flush with the upper surface of the circuit board 1, which can not only improve the connection stability between the support ring 6, the support cylinder 4 and the circuit board 1, but also avoid the interference between the support ring 6 and other electrical elements 2.

[0026] Referring to Figure 1 , the four top corner positions of the circuit board 1 are fixedly connected with L-shaped elastic protection strips 8, which protect the top corner positions of the circuit board 1 and reduce the risk of damage to the top corner positions of the circuit board 1, thereby improving the use stability.

[0027] Referring to Figure 1 , Figure 2The middle position of the lower surface of the circuit board 1 is vertically fixedly connected with the elastic supporting column 9, and the supporting column 9 can abut against the bottom side wall of the relay shell, thereby supporting the middle position of the circuit board 1, avoiding the middle position of the circuit board 1 from being suspended, and improving the structural stability of the circuit board 1.

[0028] In the embodiment, the buffer ring 7, the protection strip 8 and the supporting column 9 are respectively made of elastic materials such as rubber or latex, and of course, other elastic materials can be used in other embodiments, which are not enumerated here.

[0029] The specific embodiments are only an explanation of the utility model, and are not a limitation of the utility model, and the person skilled in the art can make a modification without creative contribution according to the need after reading the specification, but as long as it is within the scope of the claims of the utility model, it is protected by the patent law.

Claims

1. A circuit protection relay module, comprising a horizontally arranged circuit board (1), the upper surface of the circuit board (1) being provided with a plurality of electric components (2), and assembly holes (3) being respectively arranged through the four corners of the circuit board (1), characterized in that: The upper surface of the circuit board (1) is provided with elastic buffer rings (7) at four corners, four assembly holes (3) are respectively located on the inner side of the corresponding buffer ring (7), and the nut of the fastening screw can be pressed on the buffer ring (7).

2. The circuit protection relay module of claim 1, wherein: Each assembly hole (3) is fixedly connected with a support cylinder (4), the support cylinder (4) is arranged along the circumference of the buffer ring (7), the support cylinder (4) is made of hard plastic, the inner side wall of each support cylinder (4) is provided with an inner thread (5) matched with the fastening screw, so that the fastening screw can be threadedly connected with the support cylinder (4).

3. The circuit protection relay module of claim 2, wherein: The top of each support cylinder (4) is integrally connected with a support ring (6), and four buffer rings (7) are respectively fixed on the corresponding support ring (6).

4. The circuit protection relay module of claim 3, wherein: The support ring (6) is fixedly embedded on the circuit board (1), and the upper surface of the support ring (6) is flush with the upper surface of the circuit board (1).

5. The circuit protection relay module of claim 1, wherein: The four top corner positions of the circuit board (1) are respectively fixedly connected with L-shaped elastic protection strips (8).

6. The circuit protection relay module of claim 1, wherein: The lower surface of the circuit board (1) is vertically fixedly connected with an elastic support column (9) at the middle position, and the support column (9) can abut against the bottom side wall of the relay shell.

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