Relay structure convenient to assemble

Abstract

The utility model discloses a relay structure convenient to assemble, and relates to the technical field of relays. Comprising a shell, two positioning surfaces are arranged at the top of the shell, and a connecting assembly is positioned and mounted in each positioning surface; the connecting assembly comprises a nut and an auxiliary terminal, the nut limits the degree of freedom through a positioning face, and the auxiliary terminal is installed on the top of the nut. The positioning surface is arranged at the top of the shell, the nut is positioned based on the positioning surface, and finally the auxiliary terminal is used for fixing, so that the process of thread processing on the shell is omitted, the positioning surface can be integrally processed after injection molding of the shell, time and labor are saved, and the cost of raw materials is indirectly saved; the standard nut is matched with the positioning surface for rapid positioning, a stable connection mode of threaded connection is provided, the risk of connection failure caused by the fact that threads on the plastic shell are prone to being damaged in the repeated disassembly process is avoided, the service life of the whole product is prolonged, and the connection stability is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of relays, in particular to a relay structure which is easy to assemble. Background Art

[0002] As a circuit control element, relays are widely used in power, communication, automation and other fields. The traditional relay structure usually includes key components such as iron core, coil, and contacts. These components often have problems such as complex operation, high precision requirements, and low assembly efficiency during the assembly process, which seriously affects the use effect and reliability of the relay.

[0003] In the process of installing the terminal of the relay in the prior art, a boss thread is opened on the relay, and the power terminal is buried in the shell, and then fixed with the spring by riveting; this method requires a countersunk hole of a certain thickness to be reserved at the corresponding position during the shell design and production, and a thread is opened in the subsequent process, and the terminal is screwed in and fixed, which also has certain requirements for the position accuracy and processing accuracy of the threaded hole. In addition, the terminal is in direct contact with the plastic shell, and it is easy to damage the threaded hole during the subsequent disassembly and assembly process, causing the connection to fail. To this end, we propose a relay structure that is easy to assemble. Utility Model Content

[0004] The utility model aims to provide a relay structure which is easy to assemble.

[0005] The technical problems solved by the utility model are:

[0006] (1) How to solve the problem that the boss still needs to be processed in the prior art by setting a positioning surface on the top of the housing, positioning the nut based on the positioning surface, and finally fixing it with an auxiliary terminal;

[0007] (2) How to quickly position the nut by using a standardized nut and positioning surface, and provide a stable connection method for threaded connection, thereby solving the problem of thread damage caused by the disassembly process in the prior art.

[0008] The utility model can be implemented by the following technical scheme: a relay structure that is easy to assemble, comprising a housing, the top of which is provided with two positioning surfaces, each of which is provided with a connection assembly positioned and installed;

[0009] The connection assembly comprises a nut and an auxiliary terminal. The nut is restricted in freedom by a positioning surface. The auxiliary terminal is installed on the top of the nut and is riveted and fixed on two fixed springs of the relay.

[0010] A further technical improvement of the utility model is that each positioning surface is arranged as two groups of vertical step surfaces arranged oppositely or adjacently.

[0011] A further technical improvement of the utility model is that a positioning groove matching with the side wall of the nut is arranged at the bottom of the auxiliary terminal.

[0012] A further technical improvement of the utility model is that the nut adopts a standard hexagonal iron alloy nut.

[0013] A further technical improvement of the utility model is that the angle between two adjacent vertical step surfaces is set to 120°.

[0014] A further technical improvement of the utility model is that the relay further comprises a moving reed, which cooperates with the electromagnet structure, and the two fixed reeds switch the electrical connection state between the moving reed and the electromagnet by changing the attraction or isolation state of the moving reed and the electromagnet.

[0015] A further technical improvement of the utility model is that when the positioning surface is arranged as two groups of adjacently arranged vertical step surfaces, the nut and the housing are adjustably slidably connected.

[0016] A further technical improvement of the utility model is that a limiting piece is arranged on the outer side of the movable spring piece to limit the movable spring piece, and a positioning protrusion is arranged on the side of the limiting piece close to the movable spring piece, so that the movable spring piece is in a fixed angular position when it is in an isolated state from the electromagnet.

[0017] Compared with the prior art, the utility model has the following beneficial effects:

[0018] 1. By setting a positioning surface on the top of the shell, positioning the nut based on the positioning surface, and finally fixing it with an auxiliary terminal, the process of threading the shell is eliminated. The positioning surface can be integrally processed by injection molding of the shell, saving time and labor, and indirectly saving raw material costs.

[0019] 2. Rapid positioning is achieved through the standardized nut and positioning surface, and a stable threaded connection is provided. At the same time, the risk of the connection failure caused by damage to the threads on the plastic shell during multiple disassembly processes is avoided, which improves the service life of the entire product and ensures the stability of the connection. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to facilitate understanding by those skilled in the art, the present invention is further described below in conjunction with the accompanying drawings.

[0021] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0022] Figure 2 It is a schematic diagram of the internal three-dimensional structure of the utility model from the front side perspective;

[0023] Figure 3 It is a schematic diagram of the internal three-dimensional structure of the utility model from a rear side perspective;

[0024] Figure 4 It is a schematic diagram of the internal three-dimensional structure of the utility model from the right side perspective;

[0025] Figure 5 This is a schematic diagram of the top structure of the housing of the utility model;

[0026] Figure 6 This is a schematic diagram of the auxiliary terminal structure of the utility model.

[0027] In the figure: 1. shell; 2. bottom plate; 3. nut; 4. auxiliary terminal; 5. static spring; 6. yoke; 7. rivet; 8. armature; 9. moving spring; 10. frame; 11. limit plate; 12. iron core; 13. coil; 14. lead pin; 101. positioning surface one; 102. positioning surface two; 103. make way groove; 401. positioning groove. DETAILED DESCRIPTION

[0028] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined purpose of the utility model, the specific implementation method, structure, characteristics and effects of the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.

[0029] See also Figure 1-6 As shown, a relay structure that is easy to assemble includes a housing 1 and a base plate 2 and an installation cavity formed therein, a frame 10 is fixed in the installation cavity, a hollow sleeve structure is arranged on the frame 10, an iron core 12 is installed inside the sleeve, a coil 13 is wound outside the sleeve, lead pins 14 are also fixed at symmetrical positions on both sides of the sleeve in the frame 10, two end portions of the lead pins 14 located in the installation cavity are electrically connected to two lead-out ends of the frame 10, and two end portions of the lead pins 14 located outside the base plate 2 are electrically connected to an electromagnet drive circuit, thereby forming an electromagnet structure;

[0030] In the installation inner cavity, an L-shaped yoke 6 is provided on the outer half of the electromagnet structure, one side of the L-shaped short side of the yoke 6 is in contact with one end of the electromagnet structure, and an armature 8 is rotatably installed on the other side, and the armature 8 is located at the other end of the electromagnet structure, and the armature 8 and the yoke 6 are provided with a movable spring 9, and the movable spring 9 is riveted and fixed to the outer side walls of the yoke 6 and the armature 8 respectively. Since the movable spring 9 is a flexible thin sheet metal material and a telescopic margin is provided at its turning point, the armature 8 and the movable spring 9 can rotate smoothly and freely; a limiting plate 11 is provided on the outer side of the movable spring 9, and the limiting plate 11 is vertically fixed in the frame 10, and a positioning protrusion is provided on the side wall opposite to the limiting plate 11 and the movable spring 9; under the action of the flexible elastic force of the movable spring 9, the armature 8 always has a tendency to rotate outward without being subjected to electromagnetic force or external force, and is maintained at a fixed angular position under the limiting action of the positioning protrusion, and at this time the movable spring 9 is in contact with the positioning protrusion of the limiting plate 11;

[0031] A moving contact is arranged inside the end of the moving spring piece 9, and a static spring piece 5 is fixedly connected to the corresponding position of the frame 10, and a static contact corresponding to the moving contact is arranged on the static spring piece 5, and both ends of the static spring piece 5 extend out of the mounting cavity and are exposed outside the housing 1, and an integrated or split power spring piece is arranged on the side of the yoke 6; the top ends of the static spring piece 5 and the power spring piece are both arranged outside the housing 1;

[0032] The top of the housing 1 is provided with a clearance groove 103 for the static spring piece 5 and the power spring piece to pass through. The top of the housing 1 is provided with a positioning surface 101 on one side of the clearance groove 103 where the static spring piece 5 is located. The nut 3 is installed and positioned in the positioning surface 101. The positioning surface 101 is composed of two groups of vertical step surfaces arranged opposite to each other, and each group of vertical step surfaces is in contact with a group of adjacent outer side walls of the nut 3, so that the degree of freedom of the nut 3 in the horizontal plane is completely limited. In this embodiment, the nut 3 uses a standard hexagonal nut made of iron alloy, so the angle between the two surfaces of each group of vertical step surfaces is set to 120°.

[0033] Similarly, a second positioning surface 102 is provided on the top of the housing 1 on one side of the recess 103 where the power spring is located. A nut 3 is installed and positioned in the second positioning surface 102. The second positioning surface 102 is two sets of adjacent vertical step surfaces. The nut 3 can translate in an oblique upward direction but the rotational freedom is limited. Since the second positioning surface 102 is located near the center of the housing 1, adjacent vertical step surfaces are used for ease of installation. In other embodiments, the above two sets of relative step surfaces can also be used for limitation.

[0034] Auxiliary terminals 4 are provided on the tops of the two nuts 3, and positioning grooves 401 cooperating with the nuts 3 are provided at the bottoms of the auxiliary terminals 4. The vertical side walls of the two auxiliary terminals 4 are riveted and fixed to the static spring sheet 5 and the power spring sheet by rivets 7 respectively. At this time, the nuts 3 are fixed by the cooperation between the auxiliary terminals 4 and the positioning surface 1 101 or the positioning surface 2 102.

[0035] When the utility model is in use, the access end and the output end of the external control circuit are directly electrically connected to the two auxiliary terminals 4 respectively, and the nut 3 at the bottom of the auxiliary terminal 4 provides a stable threaded connection mode. When the relay is working, the on-off of the electromagnet driving circuit is controlled, and then the magnetic excitation state of the electromagnet is controlled. When the magnetism is excited, the armature 8 is attracted, so that the moving contact at the end of the moving spring piece 9 contacts the static contact on the static spring piece 5, so that the access end and the output end of the external control circuit form a conducting state; when the magnetism is not excited, the armature 8 is maintained at a certain angle position under the elastic action of the moving spring piece 9, so that the moving contact at the end of the moving spring piece 9 is separated from the static contact on the static spring piece 5, so that the access end and the output end of the external control circuit form a circuit-breaking state.

[0036] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A relay structure that is easy to assemble, comprising a housing (1), characterized in that: The top of the housing (1) is provided with two positioning surfaces, and a connecting component is positioned and installed in each positioning surface; The connection assembly comprises a nut (3) and an auxiliary terminal (4); the nut (3) has its degree of freedom restricted by a positioning surface; the auxiliary terminal (4) is installed on the top of the nut (3); and the auxiliary terminal (4) is riveted and fixed on two fixed springs of the relay.

2. A relay structure that is easy to assemble according to claim 1, characterized in that: Each of the positioning surfaces is configured as two groups of vertical step surfaces that are arranged oppositely or adjacently.

3. A relay structure that is easy to assemble according to claim 1, characterized in that: The bottom of the auxiliary terminal (4) is provided with a positioning groove (401) that matches the side wall of the nut.

4. A relay structure that is easy to assemble according to claim 2, characterized in that: The nut (3) is a standard hexagonal iron alloy nut.

5. A relay structure that is easy to assemble according to claim 4, characterized in that: The included angle between two adjacent vertical step surfaces is set to (120)°.

6. The relay structure that is easy to assemble according to claim 1, characterized in that: It comprises a moving reed (9) which cooperates with the electromagnet structure, and the two fixed reeds switch the electrical connection state between the moving reed (9) and the electromagnet by changing the attraction or isolation state of the moving reed (9) with the electromagnet.

7. A relay structure that is easy to assemble according to claim 2, characterized in that: When the positioning surfaces are arranged as two groups of adjacently arranged vertical step surfaces, the nut (3) is adjustably slidably connected to the housing (1).

8. The relay structure that is easy to assemble according to claim 6, characterized in that: A limiting piece (11) for limiting the position of the movable spring piece (9) is arranged on the outer side of the movable spring piece (9), and a positioning protrusion is arranged on the side of the limiting piece (11) close to the movable spring piece (9), so that the movable spring piece (9) is in a fixed angular position when it is in an isolated state from the electromagnet.

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