High-vibration-resistance relay driving mechanism

Abstract

The utility model discloses a high-vibration-resistance relay driving mechanism which comprises a magnetic pole, an armature which is arranged above the magnetic pole and can rotate, and an elastic element which is used for applying an elastic acting force to the armature in the direction opposite to the magnetic pole, and the armature is provided with a suction end opposite to the magnetic pole. The pull-in end is used for generating magnetic flux with the magnetic pole when the relay is electrified; the armature is further provided with an extending part, the end of the extending part extends to the position opposite to the magnetic pole, and when the armature is in the release state, the distance between the end of the extending part and the magnetic pole is smaller than the distance between the suction end and the magnetic pole. According to the utility model, the extension part is arranged on the armature, so that the electromagnetic attraction to the armature is increased, the elastic force of the elastic element is correspondingly increased, the contact pressure of the relay in a release state is increased, and the random vibration resistance of the product is greatly improved on the premise of not changing the original size of the relay and the ampere-turn of the coil.

Description

TECHNICAL FIELD

[0001] The utility model relates to relay technical field especially relates to a high anti vibration relay drive mechanism. BACKGROUND

[0002] The armature is the core moving part of the snap relay, and its structural performance directly affects the working reliability of the relay in the random vibration environment. The product vibration performance can be improved by increasing the armature reaction force and reducing the centroid rotation force arm in the release state of the relay, but the ampere-turns of the relay coil are limited due to the internal installation size of the product, so the increase of the armature reaction force will mainly depend on the improvement of the armature structure.

[0003] The current structure design of the armature is mainly simplified, and the influence of random vibration on the armature shaking and contact point pressure distribution is not fully considered, resulting in low anti-vibration performance of the relay, and possible failure phenomena such as contact shaking. Therefore, it is necessary to improve the prior art to overcome the defects in the prior art. SUMMARY

[0004] The problem to be solved by the utility model is to provide a high anti vibration relay drive mechanism to overcome the defect of low anti vibration performance of the existing relay.

[0005] The utility model discloses a high anti vibration relay drive mechanism, including: magnetic pole, the armature that is arranged in the upper of magnetic pole and can make the rotary motion and the elastic element for the elastic force that is applied to the armature to the direction of back to the magnetic pole, the armature is equipped with the attraction end opposite to the magnetic pole, and the attraction end is used for generating the magnetic flux between the magnetic pole when the relay is powered on;The armature is also provided with an extension, and the end of the extension extends to the position opposite to the magnetic pole, and when the armature is in the release state, the spacing between the end of the extension and the magnetic pole is less than the spacing between the attraction end and the magnetic pole.

[0006] As a further improvement of the utility model, the armature is provided with a main body part and two extensions, the two extensions are symmetrically distributed on both sides of the main body part, and the two extensions and the main body part are cross-shaped.

[0007] As a further improvement of the utility model, the two ends of the main body part are distributed on both sides of the extension, and one end of the main body part is provided with an armature tail, and the other end is provided with the attraction end;When the armature is in the release state, the spacing between the armature tail and the magnetic pole is less than the spacing between the attraction end and the magnetic pole.

[0008] As a further improvement of the utility model, the attracting end and the extension part are thinned to make the thickness of the attracting end and the extension part less than the thickness of the armature tail.

[0009] As a further improvement of the utility model, the high-vibration-resistant relay driving mechanism further comprises an armature bracket fixedly installed on the magnetic pole and a shaft pin arranged on the armature bracket, the armature tail is connected to the shaft pin, and the extension part is arranged at a position close to the shaft pin.

[0010] As a further improvement of the utility model, the high-vibration-resistant relay driving mechanism further comprises a toggle plate assembly, the toggle plate assembly is fixed on the armature and is distributed away from the attracting end, and the toggle plate assembly is used to follow the action of the armature to drive the contact of the relay to close or open.

[0011] As a further improvement of the utility model, the toggle plate assembly is made of wear-resistant alloy material, one end of the toggle plate assembly away from the armature is provided as a contact end, and the contact end is formed by superimposing at least two toggle plates.

[0012] As a further improvement of the utility model, the high-vibration-resistant relay driving mechanism further comprises a magnetic shell, a magnetic pole core and a coil winding arranged in the magnetic shell, the magnetic pole core comprises a magnetic core plate and a magnetic core column connected to the middle part of the magnetic core plate, the magnetic core plate is fixedly connected to the magnetic shell, the coil winding is arranged around the magnetic core column, and the magnetic pole is fixed to the top of the magnetic shell, so that a magnetic circuit is formed between the armature, the magnetic pole, the magnetic shell and the magnetic pole core.

[0013] As a further improvement of the utility model, the magnetic pole is annular, the elastic element is a conical spring, the conical spring is built in the magnetic pole and is sleeved on the outside of the magnetic core column, and one end of the elastic element with a larger diameter elastically abuts against the top of the coil winding, and one end of the elastic element with a smaller diameter elastically abuts against the middle part of the armature.

[0014] As a further improvement of the utility model, the top surface of the magnetic pole is flush with the top surface of the magnetic core column, when the armature is attracted to the magnetic core column, the attracting end and the extension part are just attached to the magnetic pole.

[0015] The utility model has the advantages of:

[0016] 1. The utility model provides a high anti vibration relay drive mechanism, through being equipped with the extension on armature, extension can reduce the distance of armature bottom surface and magnetic pole, thereby increase the electromagnetic attraction to armature, and then can correspondingly increase the elastic force of elastic element, the elastic force of elastic element increases and will increase the contact pressure of the relay under the release state, under the premise of not changing the original volume and coil ampere turns of relay, make the anti random vibration performance of product greatly improve,

[0017] 2. The utility model discloses a plunger assembly and extension are all arranged in the position close to the shaft pin, can make the centroid position of armature close to the side of shaft pin, thereby reduce the gravity arm of armature, armature is thinned simultaneously, reduce its quality, improve the anti vibration performance,

[0018] 3. The utility model discloses a plunger assembly is made of wear -resisting alloy material, and the number of plunger of contact end is increased simultaneously, thereby reduce the part wear and tear when armature acts, further improve the anti vibration performance of product. ACCURACY

[0019] In order to more clearly illustrate the technical scheme of the embodiment of the present application, the following will briefly introduce the drawing needed to be used in the embodiment, obviously, the drawing in the following description is only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained according to these drawings without creating labor.

[0020] Figure 1 It is the perspective view of the utility model high anti vibration relay drive mechanism,

[0021] Figure 2 It is the sectional view of the utility model high anti vibration relay drive mechanism under the release state,

[0022] Figure 3 It is the exploded view of the utility model high anti vibration relay drive mechanism,

[0023] Figure 4 It is the perspective view of the utility model high anti vibration relay drive mechanism after removing plunger assembly,

[0024] Figure 5 It is the perspective view of the utility model high anti vibration relay drive mechanism armature,

[0025] Figure 6 It is the front view of the utility model high anti vibration relay drive mechanism armature, armature support and magnetic pole assembly,

[0026] Figure 7 It is the perspective view of the utility model high anti vibration relay drive mechanism under the attraction state with magnetic induction line distribution,

[0027] wherein, Figure 7 The arrowed direction indicates the magnetic flux direction.

[0028] The following description is made in connection with the accompanying drawings:

[0029] 1. magnetic pole; 2. shaft pin; 3. armature; 31. main body; 311. attraction end;

[0030] 312. armature tail; 32. extension; 4. elastic element; 5. pusher assembly;

[0031] 51. contact end; 6. magnetic shell; 7. magnetic pole core; 71. magnetic core plate; 72. magnetic core column;

[0032] 8. coil winding; 9. armature support. DETAILED DESCRIPTION

[0033] The present application will be described in detail below with reference to the attached drawings and specific embodiments.

[0034] The above and other aspects of the present application will become more apparent by describing in detail the embodiments thereof with reference to the attached drawings in which:

[0035] It is to be understood that the foregoing description is that of certain examples of the application and variations in the details are possible without departing from the spirit of the application. With specific reference now to the drawings in detail, it is stressed that the particulars shown are by way of example and for purposes of illustrative discussion of the preferred embodiments only. The description taken with the drawings is intended to be illustrative, and not restrictive, of the scope of the application. In this description, all numbers are to be understood as modified in all instances by the term "about". The use of the terms "first", "second", "top" and "bottom", etc. does not imply a chronological or relative importance, but is merely intended to distinguish one element from another. As used herein, the term "about" when used before a numerical designation, has its ordinary meaning in the field of numerical specification, for example, "about 90°" has its ordinary meaning of nearly but not exactly 90°. Moreover, the use of the "term including", as well as other forms, such as "includes" or "included", is open-ended, and is intended to cover a wide

[0036] It is also need to be explained that the figures provided in the following embodiments only illustrate the basic concept of the present application in a schematic way, and only show the components related to the present application, not the number, shape and size of the components when actually implemented, the shape, number and ratio of the components when actually implemented can be a random change, and the component layout pattern can also be more complex.

[0037] In addition, in the following description, specific details are provided to facilitate a thorough understanding of the examples. However, one skilled in the art will understand that the examples can be practiced without these specific details.

[0038] The technical solutions provided by the embodiments of the present application are described below with reference to the drawings.

[0039] Referring to Figures 1 to 3 The utility model provides a kind of high anti-vibration relay driving mechanism, comprising: magnetic pole 1, the armature 3 of being arranged in the upper of magnetic pole 1 and being able to do rotary motion around a shaft pin 2 and the elastic element 4 for applying the elastic force of direction to the back of magnetic pole 1 to armature 3.

[0040] Wherein, armature 3 is equipped with the attraction end 311 opposite to magnetic pole 1, and the attraction end 311 is used to generate magnetic flux between magnetic pole 1 when the relay is powered on, to increase the electromagnetic force of armature 3.

[0041] It is worth mentioning that the armature 3 is also provided with an extension 32, and the end of the extension 32 extends above the magnetic pole 1 and is opposite to the magnetic pole 1. As Figure 6 shown, when the relay is in a released state, i.e. the armature 3 and the magnetic pole 1 form a certain opening angle with the shaft pin 2 as the vertex, at this time the distance between the end of the extension 32 and the magnetic pole 1 is L1, the distance between the attraction end 311 and the magnetic pole 1 is L2, and L1 < L2. Under the same opening angle, since the extension 32 can reduce the distance between the bottom surface of the armature 3 and the magnetic pole 1, the magnetic resistance between the armature 3 and the magnetic pole 1 is reduced, the magnetic flux is increased, i.e. the magnetic induction intensity is increased, which can further increase the electromagnetic force of the armature 3. After the electromagnetic force of the armature 3 is increased under the same load, in order to ensure that the torque balance is increased accordingly, the elastic force of the elastic element 4 is increased, and after the elastic force of the elastic element 4 is increased, the contact pressure of the relay in the released state is increased, without changing the original volume and coil ampere turns of the relay, the anti-random vibration performance of the product is greatly improved.

[0042] Referring to Figure 4 and Figure 5The armature 3 in the embodiment is made of electromagnetic pure iron material and is flat. The armature 3 is provided with a main body part 31, the two ends of the main body part 31 are distributed on the two sides of an extension part 32, and one end of the main body part 31 is provided as an armature tail part 312, and the other end of the main body part 31 is provided as an attraction end 311. The armature tail part 312 is connected to the shaft pin 2, and with the switching of the power-on and power-off of the relay, the main body part 31 can be flipped up and down around the shaft pin 2. When the armature 3 is in a released state, the distance between the armature tail part 312 and the magnetic pole 1 is smaller than the distance between the attraction end 311 and the magnetic pole 1. It is worth mentioning that the extension part 32 on the armature 3 is arranged close to the shaft pin 2, and the purpose is to make the centroid position of the armature 3 close to the side of the shaft pin 2, thereby reducing the gravity arm of the armature 3, and further improving the anti-vibration performance of the product.

[0043] As known, the mass of the armature 3 is also one of the factors affecting its random vibration performance.

[0044] As preferred, the armature 3 in the utility model is provided with two extension parts 32, the two extension parts 32 are symmetrically distributed on the two sides of the main body part 31, and the two extension parts 32 and the main body part 31 are cross-shaped. The utility model obtains greater suction force with smaller mass as much as possible by arranging two extension parts 32 on the armature 3, and the anti-vibration performance is better.

[0045] In addition, the attraction end 311 and the extension part 32 are thinned, so that the thicknesses of the attraction end 311 and the extension part 32 are smaller than the thickness of the armature tail part 312. In this way, the thickness of the armature tail part 312 is large, which can adapt to the size of the shaft pin 2, and the thicknesses of the remaining areas are small, which can further reduce the mass of the armature 3 and improve the anti-vibration performance.

[0046] Referring to Figure 1 and Figure 2 , the high anti-vibration relay driving mechanism further comprises a paddle assembly 5, the paddle assembly 5 is fixedly welded on the armature 3, one end (i.e. the upper end) of the paddle assembly 5 away from the armature 3 is provided as a contact end 51, and the movable contact of the relay is fixed to the contact end 51, and the paddle assembly 5 and the armature 3 form a rigid structure to transfer the movement of the armature 3, thereby driving the contact of the relay to close or open.

[0047] In the embodiment, the paddle assembly 5 is in the shape of a “person”, the two supporting feet at the bottom thereof are fixedly welded on the top surface of the armature 3, and the upper end of the paddle assembly 5 is bent by 90° to form the contact end 51.

[0048] It is worth mentioning that the paddle assembly 5 is fixed on the armature 3 and is distributed away from the attraction end 311, which can make the centroid position of the combined structure of the armature 3 and the paddle assembly 5 close to the shaft pin 2, thereby also reducing the gravity arm of the armature 3 and improving the random vibration performance of the product.

[0049] In the prior art, the plunger assembly 5 usually uses traditional metal materials such as pure iron, which is easy to wear and tear in long-term opening and closing operation of the relay, thereby shortening the service life of the parts and increasing the movement gap, and thus affecting the anti-vibration performance of the relay. To this end, the plunger assembly 5 is made of wear-resistant alloy material, such as 3Cr18NiTiMn alloy material, 1Cr17Ni7 alloy material, etc. The number of plunger of the contact end 51 is increased, and the contact end 51 in the embodiment is specifically formed by two plunger superimposed, thereby reducing the wear and tear of the parts when the armature 3 operates, and improving the random vibration performance of the product.

[0050] Again refer to Figures 1 to 3 , the high anti-vibration relay driving mechanism further comprises a magnetic shell 6, a magnetic pole core 7 and a coil winding 8. The magnetic shell 6 is a cylinder with both upper and lower ends being open, and the magnetic pole core 7 and the coil winding 8 are arranged in the magnetic shell 6. The magnetic pole core 7 comprises a magnetic core plate 71 and a magnetic core column 72 integrally connected to the middle of the top of the magnetic core plate 71, the magnetic core plate 71 is fixedly welded to the lower end of the magnetic shell 6, the magnetic core column 72 passes through the middle of the magnetic shell 6 and protrudes upward, and the coil winding 8 is arranged around the magnetic core column 72.

[0051] The upper end of the magnetic shell 6 is inwardly bent to form an inner flange, the magnetic pole 1 is fixedly welded to the inner flange of the magnetic shell 6, and the top surface of the magnetic pole 1 is flush with the top surface of the magnetic core column 72. In the embodiment, the materials of the armature 3, the magnetic pole 1, the magnetic shell 6 and the magnetic pole core 7 are all electromagnetic pure iron, so that a magnetic circuit can be formed between the armature 3, the magnetic pole 1, the magnetic shell 6 and the magnetic pole core 7.

[0052] Further, the magnetic pole 1 is annular, and the elastic element 4 is a conical spring which is built in the magnetic pole 1 and is sleeved on the outside of the magnetic core column 72, and the elastic element 4 elastically abuts against the top of the coil winding 8 at the end with a larger diameter and elastically abuts against the middle of the armature 3 at the end with a smaller diameter, so that the armature 3 is always subjected to an upward elastic force.

[0053] In addition, the high anti-vibration relay driving mechanism further comprises an armature support 9, the armature support 9 is fixedly installed on the magnetic pole 1, the armature support 9 is C-shaped, and one end of the armature 3 is rotatably installed on the armature support 9 through the shaft pin 2.

[0054] When the coil winding 8 of the relay is powered, the magnetic field generated by the coil winding 8 forms a magnetic circuit between the armature 3, the magnetic pole 1, the magnetic shell 6 and the magnetic pole core 7, the magnetic pole core 7 generates an electromagnetic attraction force on the armature 3, the armature 3 is flipped downward around the shaft pin 2 and is attracted to the magnetic core column 72, and the attraction end 311 and the extension 32 of the armature 3 are just attached to the magnetic pole 1 (as shown in Figure 7 At the same time, the armature 3 drives the contact of the relay to close through the plunger assembly 5.

[0055] When the coil winding 8 of the relay loses power, the electromagnetic attraction of the magnetic pole core 7 to the armature 3 disappears, the armature 3 is turned up to open under the elastic force of the elastic element 4, at the same time, the armature 3 drives the contact of the relay to open through the toggle plate assembly 5.

[0056] It should be noted that, in Figure 7 , when the current direction or winding direction of the coil winding 8 is changed, the magnetic induction line direction is changed accordingly.

[0057] Therefore, the high anti-vibration relay driving mechanism can reduce the distance between the bottom surface of the armature 3 and the magnetic pole 1, thereby increasing the electromagnetic attraction to the armature 3, and further increasing the elastic force of the elastic element 4. After the elastic force of the elastic element 4 is increased, the contact pressure of the relay in the released state is increased, and under the premise of not changing the original volume of the relay and the coil ampere turns, the anti-random vibration performance of the product is greatly improved. Further, the toggle plate assembly 5 and the extension 32 in the utility model are arranged in the position close to the shaft pin 2, so that the centroid position of the armature 3 is close to one side of the shaft pin 2, thereby reducing the gravity arm of the armature 3, and the armature 3 is thinned to reduce its mass and improve the anti-vibration performance. In addition, the toggle plate assembly 5 is made of wear-resistant alloy material, and the number of toggle plates of the contact end 51 is increased, thereby reducing the part wear when the armature 3 operates, and further improving the anti-vibration performance of the product.

[0058] The above is only a specific embodiment of the present application, but the protection scope of the present application is not limited thereto. Any skilled person in the art can easily think of changes or replacements within the technical range disclosed in the present application, which should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A high-vibration-resistant relay drive mechanism comprising a magnetic pole (1), an armature (3) arranged above the magnetic pole (1) and capable of rotational movement, and a resilient element (4) for applying a resilient force to the armature (3) in a direction opposite to the magnetic pole (1), the armature (3) being provided with an attraction end (311) opposite the magnetic pole (1) for generating a magnetic flux between the magnetic pole (1) and the attraction end (311) when the relay is powered, characterized in that: The armature (3) is further provided with an extension (32), the end of the extension (32) extends to a position opposite to the magnetic pole (1), and the distance between the end of the extension (32) and the magnetic pole (1) is smaller than the distance between the attraction end (311) and the magnetic pole (1) when the armature (3) is in the released state.

2. The high shock-resistant relay drive mechanism according to claim 1, characterized by: The armature (3) is provided with a main body (31) and two extensions (32), the two extensions (32) are symmetrically distributed on both sides of the main body (31), and the two extensions (32) and the main body (31) are cross-shaped.

3. The high vibration-resistant relay drive mechanism according to claim 2, characterized by: The two ends of the main body (31) are distributed on both sides of the extension (32), and one end of the main body (31) is provided with an armature tail (312) and the other end is provided with the attraction end (311); the distance between the armature tail (312) and the magnetic pole (1) is smaller than the distance between the attraction end (311) and the magnetic pole (1) when the armature (3) is in the released state.

4. The high vibration-resistant relay drive mechanism according to claim 3, characterized by: The attraction end (311) and the extension (32) are thinned, so that the thickness of the attraction end (311) and the extension (32) is smaller than the thickness of the armature tail (312).

5. The high shock-resistant relay drive mechanism according to claim 3, characterized by: Further comprising an armature bracket (9) fixedly installed on the magnetic pole (1) and a shaft pin (2) arranged on the armature bracket (9), the armature tail (312) is connected to the shaft pin (2), and the extension (32) is arranged in a position close to the shaft pin (2).

6. The high shock-resistant relay drive mechanism according to claim 1, characterized by: Further comprising a dial piece assembly (5) fixed on the armature (3) and away from the attraction end (311), the dial piece assembly (5) is used to follow the action of the armature (3) to drive the contact of the relay to close or open.

7. The high vibration-resistant relay drive mechanism according to claim 6, characterized by: The dial piece assembly (5) is made of wear-resistant alloy material, one end of the dial piece assembly (5) away from the armature (3) is provided with a contact end (51), and the contact end (51) is formed by stacking at least two dial pieces.

8. The high shock-resistant relay drive mechanism according to claim 5, characterized by: Further comprising a magnetic shell (6), a magnetic pole core (7) and a coil winding (8) arranged in the magnetic shell (6), the magnetic pole core (7) comprises a magnetic core plate (71) and a magnetic core column (72) connected to the middle of the magnetic core plate (71), the magnetic core plate (71) is fixedly connected to the magnetic shell (6), the coil winding (8) is arranged around the magnetic core column (72), and the magnetic pole (1) is fixed on the top of the magnetic shell (6), thereby forming a magnetic loop between the armature (3), the magnetic pole (1), the magnetic shell (6) and the magnetic pole core (7).

9. The high vibration-resistant relay drive mechanism of claim 8, wherein: The magnetic pole (1) is annular, and the elastic element (4) is a conical spring which is built in the magnetic pole (1) and is sleeved on the outside of the magnetic core column (72), and one end of the elastic element (4) with larger diameter elastically abuts against the top of the coil winding (8), and the other end with smaller diameter elastically abuts against the middle of the armature (3).

10. The high vibration-resistant relay drive mechanism of claim 8, wherein: The top surface of the magnetic pole (1) is flush with the top surface of the magnetic core column (72), and when the armature (3) is attracted to the magnetic core column (72), the attracted end (311) and the extension (32) just fit the magnetic pole (1).

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