High-sensitivity relay contact pressure adjusting mechanism

Abstract

The utility model discloses a high-sensitivity relay contact pressure regulating mechanism, which relates to the technical field of relays, and comprises a side cover, a movable contact wiring terminal and a movable iron sheet, the upper side of the movable contact wiring terminal is fixedly connected with an insulating block, the lower side of the insulating block is fixedly connected to the upper side of the movable iron sheet, and the upper side of the movable iron sheet is fixedly connected with the side cover. The lower side of the movable contact wiring terminal is attached to the upper side of the movable iron sheet, and the movable contact wiring terminal extends to the outer side of the edge of the movable iron sheet. The contact position of the triangular strip and the movable contact wiring terminal is adjusted by rotating the fine-thread screw, so that the included angle of the movable contact wiring terminal is adjusted, and when the included angle is increased, the movable contact wiring terminal can be connected with the movable iron sheet. The contact distance between the movable contact wiring terminal and the static contact wiring terminal is increased, and the contact pressure is reduced; and when the included angle is reduced, the distance is reduced and the contact pressure is increased, the contact pressure of the contact is adaptively adjusted according to the working condition change in an actual use environment to adapt to a specific environment.

Description

TECHNICAL FIELD

[0001] The utility model relates to relay technology field especially relates to a high sensitivity relay contact pressure adjusting mechanism. BACKGROUND

[0002] In modern electrical system, relay as the key control element, is widely used in communication, electric power, industrial automation, automobile electronics and many other fields. Its main function is to realize the switching and control of different loads through the on-off of control circuit, and the relay contact is the core part to complete this key task.

[0003] But in the prior art, the influence of environmental factors on the relay cannot be ignored. In the harsh environment of high temperature, high humidity, strong electromagnetic interference, etc., the performance of the contact material of the relay, the characteristics of the elastic element, etc. will change, and then affect the contact pressure. The existing relay adopts a relatively simple fixed structure, and the contact pressure is determined at the time of factory delivery, and cannot be adaptively adjusted according to the working condition changes in the actual use environment. UTILITY MODEL CONTENT

[0004] The utility model aims at solving the prior art problems, and provides a high sensitivity relay contact pressure adjusting mechanism.

[0005] In order to realize the above-mentioned purpose, the utility model adopts the following technical scheme: a high sensitivity relay contact pressure adjusting mechanism, including side cover, movable contact terminal and movable iron sheet, the upper side of movable contact terminal is fixedly connected with insulating block, the lower side of insulating block is fixedly connected on the upper side of movable iron sheet, the lower side of movable contact terminal is pasted with the upper side of movable iron sheet, and movable contact terminal extends to the edge outside of movable iron sheet, the inside of side cover is fixedly connected with built-in frame, the inside of side cover and built-in frame is provided with pressure adjusting assembly, pressure adjusting assembly includes fine tooth screw, sliding rod and triangle strip, triangle strip is pasted with the lower side of movable contact terminal, fine tooth screw is rotatably connected in the middle of one side of triangle strip, sliding rod is fixedly connected on the same side of triangle strip, fine tooth screw is screw connected with the middle part of built-in frame, sliding rod is slidingly connected in the inside of built-in frame.

[0006] Preferably, the fine tooth screw penetrates the inside of the side cover.

[0007] Preferably, one end of the movable iron sheet is rotatably connected with an armature, and a return spring is sleeved on the protruding position of the end of the movable iron sheet.

[0008] Preferably, the other end of the return spring is sleeved with the protruding position of the outside of the armature, the armature is fixedly connected with the side cover through a screw, and the side cover is fixedly connected with an outer shell on one side.

[0009] Preferably, the inside of the side cover is provided with a plurality of sets of static contact terminals and a plurality of sets of coil terminals, and a part of the static contact terminals are electrically connected to the moving contact terminals through wires, and the contacts of another part of the static contact terminals are located below the contacts of the moving contact terminals.

[0010] Preferably, the coil terminals are connected with a coil core set through wires, and the coil core set is fixedly connected to the inner side of the armature.

[0011] Preferably, the coil core set is located below the middle part of the moving iron sheet.

[0012] Compared with the prior art, the high-sensitivity relay contact pressure adjusting mechanism has the advantages and positive effects that:

[0013] 1. In the high-sensitivity relay contact pressure adjusting mechanism, the screwdriver is used to rotate the fine screw, the position of the contact between the triangular strip and the moving contact terminal is adjusted, the included angle of the moving contact terminal is adjusted, the distance between the contacts of the moving contact terminal and a part of the contacts of the static contact terminal is increased when the included angle is increased, the moving iron sheet and the moving contact terminal thereon are driven to move downward along an arc line, the contact distance between the moving contact terminal and the static contact terminal is increased, and the contact pressure is reduced; the distance between the contacts of the moving contact terminal and a part of the contacts of the static contact terminal is reduced when the included angle is reduced, the contact pressure is increased, the included angle of the moving contact terminal is adaptively adjusted according to the working condition change in the actual use environment, the contact pressure is adjusted, and the relay is used in a specific environment.

[0014] 2. In the high-sensitivity relay contact pressure adjusting mechanism, after the external power supply of the coil terminal is cut off, the core in the coil core set loses magnetism, the reset spring in the stretched state applies a force to restore the initial state to the moving iron sheet, the moving iron sheet moves upward along an arc, the contacts of the moving contact terminal and a part of the contacts of the static contact terminal are separated, and the next work of the relay is realized. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 A three-dimensional structure schematic view of the position of the high-sensitivity relay contact pressure adjusting mechanism is provided for the utility model.

[0016] Figure 2 A first three-dimensional structure schematic view of the mounting relationship of the high-sensitivity relay contact pressure adjusting mechanism is provided for the utility model.

[0017] Figure 3 A second three-dimensional structure schematic view of the mounting relationship of the high-sensitivity relay contact pressure adjusting mechanism is provided for the utility model.

[0018] Figure 4This utility model presents a three-dimensional structural diagram of a high-sensitivity relay contact pressure regulating mechanism and its related parts.

[0019] Legend: 1. Outer casing; 2. Side cover; 21. Internal frame; 3. Pressure adjustment assembly; 31. Fine thread screw; 32. Sliding rod; 33. Triangular bar; 4. Stationary contact terminal; 5. Coil terminal; 6. Armature; 7. Coil core assembly; 8. Insulating block; 9. Moving contact terminal; 10. Moving iron plate; 11. Return spring. Detailed Implementation

[0020] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0021] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0022] Example 1: As Figure 1 - Figure 4 As shown, this utility model provides a high-sensitivity relay contact pressure adjustment mechanism, including a side cover 2, a moving contact terminal 9, and a moving iron plate 10. An insulating block 8 is fixedly connected to the upper side of the moving contact terminal 9, and the lower side of the insulating block 8 is fixedly connected to the upper side of the moving iron plate 10. The lower side of the moving contact terminal 9 is in contact with the upper side of the moving iron plate 10, and the moving contact terminal 9 extends to the outer edge of the moving iron plate 10. An internal frame 21 is fixedly connected to the inner side of the side cover 2. A pressure adjustment component 3 is jointly provided inside the side cover 2 and the internal frame 21. The pressure adjustment component 3 includes a fine-thread screw 31, a sliding rod 32, and a triangular strip 33. The triangular strip 33 is in contact with the lower side of the moving contact terminal 9, and the fine-thread screw 31 is rotatably connected to the upper side of the moving iron plate 10. On one side of the triangular bar 33, a sliding rod 32 is fixedly connected to the same side of the triangular bar 33. A fine thread screw 31 is threadedly connected to the middle of the built-in frame 21. The sliding rod 32 is slidably connected inside the built-in frame 21. The fine thread screw 31 passes through the inside of the side cover 2. Multiple sets of stationary contact terminals 4 and multiple sets of coil terminals 5 are installed through the inside of the side cover 2. Some of the stationary contact terminals 4 are electrically connected to the moving contact terminals 9 through wires. The contacts of the other part of the stationary contact terminals 4 are located below the contacts of the moving contact terminals 9. The coil terminals 5 are connected to the coil core assembly 7 through wires. The coil core assembly 7 is fixedly connected to the inside of the armature 6. The coil core assembly 7 is located below the middle of the moving iron piece 10.

[0023] The specific settings and effects of the embodiment are as follows: the screwdriver is used to rotate the fine screw 31, and the fine screw 31 rotates at the middle position of the built-in frame 21. Since the fine screw 31 is a high-precision thread, the axial displacement of the fine screw 31 is small after each rotation. The triangular strip 33 is composed of two symmetrical parts. The end of the fine screw 31 rotates in the middle of the triangular strip 33 and pushes the triangular strip 33. The two groups of sliding rods 32 are fixed at the same side of the two ends of the triangular strip 33. The triangular strip 33 pulls the sliding rod 32 to move inside the built-in frame 21, ensuring that the triangular strip 33 moves horizontally. The triangular strip 33 is located below the moving contact terminal 9, and the other end of the moving contact terminal 9 is fixed by the insulating block 8. In the initial state, the triangular strip 33 is in contact with the moving contact terminal 9. The moving contact terminal 9 forms an angle with the upper surface of the moving iron sheet 10. With the horizontal displacement of the triangular strip 33 to the middle of the moving contact terminal 9, the end of the moving contact terminal 9 in contact with the triangular strip 33 is raised to a certain height, and the angle increases, that is, the distance between the contact of the moving contact terminal 9 and the contact of part of the static contact terminal 4 increases, reducing the contact pressure. When the fine screw 31 is rotated in the opposite direction, the triangular strip 33 moves horizontally to the outside of the moving contact terminal 9. Since the moving contact terminal 9 is made of copper and has strong toughness, the end of the moving contact terminal 9 in contact with the triangular strip 33 has a tendency to recover horizontally under the action of toughness. The angle decreases, that is, the distance between the contact of the moving contact terminal 9 and the contact of part of the static contact terminal 4 decreases, increasing the contact pressure. Thus, the angle of the moving contact terminal 9 is adaptively adjusted according to the working conditions in the actual use environment, thereby adjusting the contact pressure and adapting to specific environments for use.

[0024] Embodiment two: as shown in Figure 1 - Figure 4 The end of the moving iron sheet 10 is rotatably connected with the armature 6. The protruding position of the end of the moving iron sheet 10 is sleeved with the reset spring 11. The other end of the reset spring 11 is sleeved with the protruding position of the outside of the armature 6. The armature 6 is fixedly connected with the side cover 2 through a screw. One side of the side cover 2 is fixedly connected with the outer shell 1.

[0025] The effect of the whole embodiment is that after the power supply connected to the coil terminal 5 is powered off, the magnetic property of the iron core in the coil core group 7 is lost. The reset spring 11 in the stretched state applies a force to the moving iron sheet 10 to make the moving iron sheet 10 move in an arc shape upward. The contact of the moving contact terminal 9 and the contact of part of the static contact terminal 4 are separated, realizing the next work of the relay.

[0026] The method for using the device and the working principle are as follows: the screwdriver is used to rotate the fine screw 31, the fine screw 31 rotates at the middle position of the built-in frame 21, the end of the fine screw 31 rotates in the middle of the triangular strip 33 and pushes the triangular strip 33, the two groups of sliding rods 32 are fixed at the same side of the two ends of the triangular strip 33, the triangular strip 33 pulls the sliding rods 32 to move inside the built-in frame 21, so that the triangular strip 33 moves horizontally, the triangular strip 33 is located below the moving contact terminal 9, and the other end of the moving contact terminal 9 is fixed by the insulating block 8. In the initial state, the triangular strip 33 is in contact with the moving contact terminal 9, and the moving contact terminal 9 forms an angle with the upper surface of the moving iron sheet 10. With the horizontal displacement of the triangular strip 33 to the middle of the moving contact terminal 9, the end of the moving contact terminal 9 in contact with the triangular strip 33 is tilted upward by a certain height, the angle is increased, that is, the distance between the contact of the moving contact terminal 9 and the contact of part of the static contact terminal 4 is increased. When the coil core group 7 is connected to the power supply through the coil terminal 5 and is powered, a magnetic field is generated at the upper end of the core in the coil core group 7 and the moving iron sheet 10 is attracted downward, the moving iron sheet 10 rotates downward around the end of the armature 6, and the moving contact terminal 9 on the moving iron sheet 10 moves downward in an arc, and since the distance between the contact of the moving contact terminal 9 and the contact of the static contact terminal 4 is increased, the contact pressure is reduced.

[0027] When the fine screw 31 is rotated in the opposite direction, the triangular strip 33 moves horizontally to the outside of the moving contact terminal 9. Since the moving contact terminal 9 is made of copper and has strong toughness, the end of the moving contact terminal 9 in contact with the triangular strip 33 has a tendency to restore horizontally under the action of toughness, the angle is reduced, that is, the distance between the contact of the moving contact terminal 9 and the contact of part of the static contact terminal 4 is reduced, and the contact pressure is increased.

[0028] The above is only a preferred embodiment of the present application, and is not intended to limit the present application in other forms. Any skilled person in the art can modify or change the above disclosed technical content to equivalent embodiments applied to other fields, but any simple modification, equivalent change and modification made on the basis of the technical essence of the present application to the above embodiments still belongs to the protection scope of the technical scheme of the present application.

Claims

1. A high-sensitivity relay contact pressure regulating mechanism, comprising a side cover (2), a moving contact terminal (9), and a moving iron piece (10), characterized in that: An insulating block (8) is fixedly connected to the upper side of the moving contact terminal (9), and the lower side of the insulating block (8) is fixedly connected to the upper side of the moving iron plate (10). The lower side of the moving contact terminal (9) is in contact with the upper side of the moving iron plate (10), and the moving contact terminal (9) extends to the outer edge of the moving iron plate (10). An internal frame (21) is fixedly connected to the inner side of the side cover (2). A pressure regulating component (3) is provided inside both the side cover (2) and the internal frame (21). The pressure regulating assembly (3) includes a fine-thread screw (31), a sliding rod (32), and a triangular bar (33). The triangular bar (33) is attached to the lower side of the moving contact terminal (9). The fine-thread screw (31) is rotatably connected to the middle of one side of the triangular bar (33). The sliding rod (32) is fixedly connected to the same side of the triangular bar (33). The fine-thread screw (31) is threadedly connected to the middle of the built-in frame (21). The sliding rod (32) is slidably connected inside the built-in frame (21).

2. The high-sensitivity relay contact pressure regulating mechanism according to claim 1, characterized in that: The fine-thread screw (31) penetrates the interior of the side cover (2).

3. The high-sensitivity relay contact pressure regulating mechanism according to claim 2, characterized in that: One end of the moving iron piece (10) is rotatably connected to an armature (6), and a return spring (11) is sleeved on the protruding part of the moving iron piece (10).

4. The high-sensitivity relay contact pressure regulating mechanism according to claim 3, characterized in that: The other end of the return spring (11) is sleeved on the outer protruding position of the armature (6). The armature (6) is fixedly connected to the side cover (2) by screws. An outer cover (1) is fixedly connected to one side of the side cover (2).

5. The high-sensitivity relay contact pressure regulating mechanism according to claim 4, characterized in that: Multiple sets of stationary contact terminals (4) and multiple sets of coil terminals (5) are installed through the interior of the side cover (2). A portion of the stationary contact terminals (4) are electrically connected to the moving contact terminals (9) via wires, while the contacts of another portion of the stationary contact terminals (4) are located below the contacts of the moving contact terminals (9).

6. The high-sensitivity relay contact pressure regulating mechanism according to claim 5, characterized in that: The coil terminal (5) is connected to the coil core assembly (7) via a wire, and the coil core assembly (7) is fixedly connected to the inner side of the armature (6).

7. The high-sensitivity relay contact pressure regulating mechanism according to claim 6, characterized in that: The coil core assembly (7) is located below the center of the moving iron piece (10).

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