Relay

Abstract

The utility model discloses a relay which comprises a metal cup, a yoke plate, a magnetizer and a metal cylinder. The metal cup comprises a cup wall and a cup bottom connected to the cup wall; the interior of the metal cup is provided with a part of the moving contact and a part of the static contact. The yoke plate is arranged on the side, away from the cup wall, of the cup bottom of the metal cup and provided with a first hole. The magnetizer is connected to the yoke plate, and an electromagnetic coil is arranged in the magnetizer. The metal cylinder is provided with a cylinder wall and a cylinder bottom connected to the cylinder wall and arranged in the space defined by the electromagnetic coil, and the end, away from the cylinder bottom, of the cylinder wall of the metal cylinder penetrates through the first hole to be connected to the cup bottom of the metal cup.

Description

Technical Field

[0001] The present application relates to the technical field of electrical control devices, and more particularly, to a relay. Background Art

[0002] A relay is an electronic control device that has a control system (also known as an input circuit) and a controlled system (also known as an output circuit), and is usually applied to an automatic control circuit. In fact, a relay is an "automatic switch" that uses a smaller current to control a larger current. Therefore, it plays roles such as automatic regulation, safety protection, and circuit conversion in the circuit.

[0003] A high-voltage DC relay is a type of relay, mainly including an electromagnetic coil, a static contact, and a moving contact piece. The static contact and the moving contact piece constitute the moving / static contact part of the relay. By controlling the energization and de-energization of the electromagnetic coil, the contact and separation of the static contact and the moving contact piece are achieved, and thus the closing and opening of the relay contacts are realized. In the existing high-voltage DC relay, the electromagnetic coil part and the moving / static contact part are assembled in an iron cup to form a whole through the iron cup. Since the coil will generate organic substances such as benzene and acetone at high temperatures, it has an impact on the contact resistance of the product. Therefore, the coil needs to be subjected to high-temperature aging before assembly, resulting in low production efficiency. Summary of the Utility Model

[0004] The main purpose of the present application is to provide a relay in which the electromagnetic coil and the moving / static contact part are respectively arranged in two independent cavities, and which has high magnetic conduction efficiency and large magnetic attraction.

[0005] To achieve the above object, the present application adopts the following technical solutions:

[0006] The relay of the embodiment of the present application includes:

[0007] A metal cup, the metal cup includes a cup wall and a cup bottom connected to the cup wall; a part of the moving contact piece and the static contact are arranged inside the metal cup.

[0008] A yoke iron plate, the yoke iron plate is arranged on the side of the cup bottom of the metal cup away from the cup wall, and the yoke iron plate is provided with a first hole.

[0009] A magnetic conductor, the magnetic conductor is connected to the yoke iron plate, and an electromagnetic coil is arranged inside the magnetic conductor.

[0010] A metal cylinder, having a cylinder wall and a cylinder bottom connected to the cylinder wall, is arranged in the space surrounded by the electromagnetic coil. One end of the cylinder wall of the metal cylinder away from the cylinder bottom passes through the first hole and is connected to the cup bottom of the metal cup.

[0011] According to some embodiments of the present application, the cup wall and the cup bottom of the metal cup are integrally formed.

[0012] According to some embodiments of the present application, the cup wall and the cup bottom of the metal cup are separately formed and then sealed and fixed together.

[0013] According to some embodiments of the present application, the material of the metal cylinder is a non-magnetic material.

[0014] According to some embodiments of the present application, the metal cylinder and the cup bottom of the metal cup are connected by welding.

[0015] According to some embodiments of the present application, one end of the cylinder wall of the metal cylinder away from the cylinder bottom has a flanging, and the metal cylinder is connected to the cup bottom of the metal cup through the flanging.

[0016] According to some embodiments of the present application, the cup bottom of the metal cup has a second hole, and the second hole communicates with the first hole. On a plane parallel to the cup bottom of the metal cup, the projection of the flanging is located within the projection of the first hole and outside the projection of the second hole.

[0017] According to some embodiments of the present application, the material of the magnetic conductor is a magnetic metal material or a magnetic alloy material.

[0018] According to some embodiments of the present application, the electromagnetic coil is connected with coil pins, the coil pins extend from the magnetic conductor towards the metal cup, and the relay further includes a baffle plate, which is arranged between the metal cup and the coil pins and protrudes from the cup mouth of the metal cup.

[0019] According to some embodiments of the present application, the relay further includes a support cover and a heat insulation member. The support cover is arranged in the inner cavity of the metal cup and supports the static contact. The heat insulation member is arranged between the static contact and the support cover and separates the static contact from the support cover.

[0020] One embodiment in the above application has at least the following advantages or beneficial effects:

[0021] For the relay in the embodiment of the present application, a metal cup and a magnetic conductor are adopted, and the moving / static contact part and the electromagnetic coil of the relay are separately arranged in independent cavities. The electromagnetic coil does not need to be subjected to high-temperature aging treatment, and the gas generated during subsequent use will not affect the cavity where the moving / static contact part is located. A yoke iron plate is arranged between the metal cup and the magnetic conductor, which avoids the reduction of the magnetic conduction circuit area and improves the magnetic conduction efficiency; it can also avoid the problem of small magnetic suction force caused by reducing the size of the magnetic conductor in order to improve the magnetic conduction efficiency.

[0022] Further, the metal cylinder of the relay in the embodiment of the present application is connected to the bottom of the metal cup by welding, which can isolate the glue and play a sealing role. The metal cylinder is made of non-magnetic material, which can prevent the metal cylinder from participating in magnetic conduction, affecting the magnetic conduction circuit, and thus affecting the magnetic conduction efficiency and magnetic attraction force.

[0023] Further, the baffle of the relay in the embodiment of the present application can increase the electrical distance between the electromagnetic coil pins and the metal cup, and can prevent the glue from entering the space between the coil pins and the coil during potting, which will increase the amount of glue used and increase the cost. In addition, when potting, the glue entering the space between the coil pins and the coil will affect the airtightness of the relay, and will also cause the glue to wrap the electromagnetic coil, which is not conducive to the heat dissipation of the electromagnetic coil. Moreover, the stress generated after the glue is cured may cause the electromagnetic coil to break, resulting in the relay being unable to work.

[0024] Further, for the relay in the embodiment of the present application, a heat insulation member is provided between the static contact and the support cover, and the heat insulation member separates the static contact and the support cover, thereby reducing the deformation of the support cover caused by the heat transfer from the static contact due to energization. The influence of heat on the glue is reduced, and the airtightness of the relay is ensured. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is a schematic cross-sectional structure view of an embodiment of the relay of the present application along the plane of the connection line of the center lines of the two static contacts.

[0026] Figure 2 is a schematic structural view of the moving / static contact part of the relay of the present application.

[0027] Figure 3 is Figure 2 a schematic structural view from another angle.

[0028] Figure 4 is Figure 2 a schematic A-A cross-sectional structure view.

[0029] Figure 5 is a schematic separated structure view of the metal cup, yoke iron plate, metal cylinder and magnetic conductor of the present application.

[0030] Figure 6 is a schematic view of an embodiment of the metal cup, yoke iron plate and metal cylinder of the present application.

[0031] Figure 7 is a schematic separated structure view of the moving / static contact part and the coil part of the relay of the present application.

[0032] Figure 8 is a schematic separated structure view of the relay (removing the magnetic conductor and electromagnetic coil) of the present application.

[0033] Figure 9 It is a three-dimensional structural schematic diagram of another embodiment of the relay of the present application.

[0034] Figure 10 is Figure 9 A three-dimensional exploded structural schematic diagram of another angle of the shown relay (the outer shell cover of the relay is added).

[0035] Figure 11 is Figure 10 A sectional structural schematic diagram in the B-B direction with the outer shell body installed and the outer shell cover removed.

[0036] Among them, the reference numerals are explained as follows:

[0037] 1 - Relay.

[0038] 10 - Magnetic conductor.

[0039] 11 - Electromagnetic coil.

[0040] 12 - Iron core pushing assembly.

[0041] 13 - Coil pin.

[0042] 14 - Magnetic cylinder.

[0043] 20 - Metal cup.

[0044] 21 - Moving contact piece.

[0045] 22 - Static contact.

[0046] 23 - Auxiliary lead-out piece.

[0047] 24 - Groove.

[0048] 30 - Baffle.

[0049] 40 - Yoke iron plate.

[0050] 50 - Metal cylinder.

[0051] 51 - Cylinder bottom.

[0052] 52 - Cylinder wall.

[0053] 53 - Hem.

[0054] 60 - Support cover.

[0055] 70 - Heat insulation part.

[0056] 80 - Glue.

[0057] 101 - Bottom wall.

[0058] 102 - Side wall.

[0059] 121 - Moving iron core.

[0060] 122 - Stationary iron core.

[0061] 123 - Spring.

[0062] 124 - Push rod.

[0063] 131 - Electric wire.

[0064] 132 - Connection component.

[0065] 201 - Cup wall.

[0066] 2011 - Arc surface segment.

[0067] 2012 - Plane segment.

[0068] 202 - Cup bottom.

[0069] 203 - Second hole.

[0070] 204 - Fillet.

[0071] 301 - Plate body.

[0072] 302 - Plate ear.

[0073] 401 - First hole.

[0074] 500 - Outer shell cover.

[0075] 501 - Outer shell body. Detailed implementation manners

[0076] Example embodiments will now be described more fully with reference to the accompanying drawings. However, the example embodiments can be implemented in various forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this application will be thorough and complete, and will fully convey the concept of the example embodiments to those skilled in the art. Like reference numerals in the figures denote like or similar structures, and thus their detailed description will be omitted.

[0077] It will be understood that the terms "comprising" and "having" and any variations thereof in the embodiments of this application are intended to cover non - exclusive inclusion. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but optionally further includes steps or units not listed, or optionally further includes other steps or components inherent to these processes, methods, products or devices.

[0078] Relative terms such as "lower" or "bottom" and "upper" or "top" may be used herein to describe the relationship of one element to another element, as shown in the figures. It should be understood that relative terms are intended to encompass different orientations of the device in addition to the orientation shown in the figures. For example, if the device in one of the figures is flipped, an element described as "lower" or "bottom" of other elements will be oriented "upper" or "top" of other elements. Thus, the exemplary term "lower" may include the orientations of "lower" and "upper", and the term "bottom" may include the orientations of "bottom" and "top", depending on the specific orientation of the figure. Similarly, if the device in one of the figures is flipped, an element described as "lower" or "bottom" of other elements will be oriented "upper" or "top" of other elements. Thus, the exemplary terms "bottom" or "beneath" may include the orientations of upper and lower.

[0079] Figures 1 to 8 An embodiment of the relay 1 of the present application is shown, wherein the relay 1 includes a metal cup 20, a yoke iron plate 40, a magnetic conductor 10, and a metal cylinder 50. The metal cup 20 includes a cup wall 201 and a cup bottom 202 connected to the cup wall 201; a movable contact piece 21 and a part of a static contact 22 are arranged inside the metal cup 20. The yoke iron plate 40 is arranged on a side of the cup bottom 202 of the metal cup 20 away from the cup wall, and the yoke iron plate 40 is provided with a first hole 401. The magnetic conductor 10 is connected to the yoke iron plate 40, and an electromagnetic coil 11 is arranged inside the magnetic conductor 10. The metal cylinder 50 has a cylinder wall 52 and a cylinder bottom 51 connected to the cylinder wall 52, and is arranged in the space surrounded by the electromagnetic coil 11. One end of the cylinder wall 52 of the metal cylinder 50 away from the cylinder bottom 51 passes through the first hole 401 and is connected to the cup bottom 202 of the metal cup 20.

[0080] For the relay 1 of the present application, the metal cup 20 and the magnetic conductor 10 are used to separately arrange the movable / static contact parts 21, 22 and the electromagnetic coil 11 of the relay 1 in independent cavities. The electromagnetic coil 11 does not require high-temperature aging treatment, and the gas generated by the electromagnetic coil 11 during subsequent use will not affect the cavity where the movable / static contact part is located. In the case where the yoke iron plate 40 is not provided, in order to make the connection between the magnetic conductor 10 and the metal cup 20 without gaps, due to the transition fillet 204 generated during the molding of the cup wall 201 and the cup bottom 202 of the metal cup, the magnetic conductor 10 needs to avoid this transition fillet 204, so that the size of the magnetic conductor 10 will be reduced a little, and the magnetic conduction loop area will be decreased. The present application also provides a yoke iron plate 40 between the metal cup 20 and the magnetic conductor 10, avoiding the reduction of the magnetic conduction loop area caused by the transition fillet 204, increasing the area of the magnetic conduction loop, increasing the magnetic suction force, and improving the magnetic conduction efficiency.

[0081] In this embodiment, the relay 1 further includes a housing cover 500 and a housing body 501, wherein the housing body 501 encloses the magnetic conductor 10, the yoke iron plate 40, the metal cup 20, and various internal structures. The housing cover 500 covers the opening of the housing body 501, and the static contact 22 extends out of the housing cover 500. The size of the internal space of the housing body 501 near the housing cover 500 becomes larger, and the glue 80 is filled in this space to fix the position of the static contact 22. The wire 131 of the relay 1 is the wire of the external connector.

[0082] In this embodiment, an electromagnetic coil 11 is disposed in the inner space of the magnetic conductor 10, a metal cylinder 50 is disposed in the space surrounded by the electromagnetic coil 11, and an iron core push component 12 is disposed inside the metal cylinder 50. A portion of a static contact 22 and a moving contact piece 21 are disposed in the inner cavity of the metal cup 20, and the moving contact piece 21 is connected to the iron core push component 12. Figure 7 The electromagnetic coil 11 is provided with a coil pin 13, and the coil pin 13 extends from the magnetic conductor 10 toward the metal cup 20. The metal cup 20 avoids the coil pin 13.

[0083] In this embodiment, if Figure 2 , Figure 3 and Figure 7 As shown, the cup wall 201 includes an arc segment 2011 and a plane segment 2012, and the plane segment 2012 is connected to the arc segment 2011, and the arc segment 2011 and the plane segment 2012 form an inner cavity of the metal cup 20. The metal cup 20 is formed by connecting the arc segment 2011 and the plane segment 2012, and the inner cavity space is sufficient to set the support cover 60, the static contact 22 and other structures. The inner cavity space of the metal cup 20 is provided with the dynamic / static contact part of the relay 1 of the present application; at the same time, the metal cup 20 is formed by connecting the arc segment 2011 and the plane segment 2012, and the metal cup 20 can also avoid the coil pin 13 of the electromagnetic coil 11 of the relay 1, thereby reducing the volume of the relay 1. In some other embodiments, the plane segment 2012 can also be a flat arc surface, as long as it can avoid the coil pin 13.

[0084] In this embodiment, the cup bottom 202 includes an arc segment and a straight segment, and the arc segment and the straight segment are connected to make the cup bottom 202 "D"-shaped, the arc segment is connected to the arc segment 2011, and the straight segment is connected to the plane segment 2012. The "D"-shaped cup bottom 202 avoids the coil pin 13 and ensures the space inside the metal cup 20. The corresponding connection between the cup bottom 202 and the cup wall 201 forms a metal cup 20 that is "D"-shaped as a whole. In some other embodiments, the metal cup 20 can also be other shapes, as long as there is space for setting the static contact 22, the support cover 60, and the moving contact piece 21, and the periphery of the metal cup 20 can just avoid the coil pin 13.

[0085] Figure 4 ShowsFigure 2 The cross-sectional structure of A-A, that is, the moving / static contact part formed by the metal cup 20 of the relay 1 of the present application and the iron core pushing assembly 12. Among them, the static contact 22, the moving contact piece 21, and the support cover 60 are all arranged in the inner cavity of the metal cup 20. A second hole 203 is provided at the bottom 202 of the metal cup 20 (see Figure 6 ), and the push rod passes through the second hole 203 and is connected to the moving contact piece 21.

[0086] Figure 5 The separated structure of the metal cup 20, the yoke iron plate 40, the metal cylinder 50, and the magnetic conductor 10 of the present application is shown. It can be clearly seen from the figure that a yoke iron plate 40 is provided below the metal cup 20. Here, below means that the magnetic conductor 10 is located below the metal cup 20 relative to the metal cup 20, and moving downward means moving in the direction from the metal cup 20 to the magnetic conductor 10. Similarly, above means that the metal cup 20 is located above the magnetic conductor 10 relative to the magnetic conductor 10, and moving upward means moving in the direction from the magnetic conductor 10 to the metal cup 20. A first hole 401 is provided in the center of the yoke iron plate 40, and the metal cylinder 50 passes through the first hole 401 of the yoke iron plate 40 and is connected to the metal cup 20.

[0087] In this embodiment, as Figure 6 shown, the cup wall 201 and the cup bottom 202 of the metal cup 20 are integrally formed. The integral forming process is simple and has good sealing performance. In some other embodiments, the cup wall 201 and the cup bottom 202 of the metal cup 20 can also be separately formed and then sealed and fixed together. The separate forming is beneficial to saving materials and simplifying processing.

[0088] In this embodiment, see Figure 3 and Figure 6 , one end of the cylinder wall 52 of the metal cylinder 50 far from the cylinder bottom 51 has a flanging 53, and the metal cylinder 50 is connected to the cup bottom 202 of the metal cup 20 through the flanging 53.

[0089] In this embodiment, see Figure 6 , the second hole 203 at the cup bottom 202 of the metal cup 20 is communicated with the first hole 401. On the plane parallel to the side of the cup bottom 202 of the metal cup 20 far from the cup wall, the projection of the flanging 53 is located within the projection of the first hole 401 and outside the projection of the second hole 203. The second hole 203 is blocked to seal the metal cup 20.

[0090] In this embodiment, the metal cylinder 50 and the cup bottom 202 of the metal cup 20 are connected by welding. The welding method can prevent the glue 80 from flowing into the space inside the metal cylinder 50, playing a role in isolating the glue and sealing.

[0091] In this embodiment, the material of the metal cylinder 50 is a non-magnetic material, such as stainless steel, to prevent the metal cylinder from participating in magnetic conduction, affecting the magnetic conduction circuit, and thus affecting the magnetic conduction efficiency and magnetic attraction. In this embodiment, the material of the magnetic conductor 10 is a magnetic metal material or a magnetic alloy material. For example, metallic iron.

[0092] In this embodiment, as Figure 7 shown, a part of the metal cup 20 is the moving / static contact part, and the lower part is the coil part. The electromagnetic coil 11 is arranged in the coil part. The metal cup 20 and the metal cylinder 50 separate the moving / static contact part and the coil part and arrange them in independent cavities. The electromagnetic coil 11 does not require high-temperature aging treatment, and the gas generated during subsequent use will not affect the cavity where the moving / static contact part is located.

[0093] In this embodiment, a support cover 60 for supporting the static contact 22 is arranged in the inner cavity of the metal cup 20. A groove 24 is arranged on the support cover 60, and an auxiliary lead-out piece 23 is arranged in the groove 24.

[0094] In this embodiment, as Figure 1 、 Figure 4 、 Figure 7 and Figure 8 shown, the relay 1 further includes: a support cover 60 and a heat insulation member 70. The support cover 60 is arranged in the inner cavity of the metal cup 20 and supports the static contact 22. The heat insulation member 70 is arranged between the static contact 22 and the support cover 60 and separates the static contact 22 and the support cover 60. Arranging the heat insulation member 70 between the support cover 60 and the static contact 22 can prevent the static contact 22 and the support cover 60 from contacting, and the heat generated by the static contact 22 is transferred to the support cover 60 as little as possible, thereby reducing the thermal deformation of the support cover 60 and being beneficial to improving the stability and reliability of the performance of the relay 1.

[0095] In this embodiment, the thermal conductivity coefficient of the heat insulation member 70 is less than that of the static contact 22. The heat insulation member 70 can be made of materials with relatively low thermal conductivity coefficients, such as ceramics and glass, to separate the heat generated by the static contact 22 from the support cover 60 as much as possible and prevent the support cover 60 from being heated.

[0096] As Figures 9 to 11 shows another embodiment of the relay 1 of the present application. Compared with the relay 1 in the Figures 1 to 8 embodiment, the relay 1 in this other embodiment has a substantially the same structure in the basic configuration. Therefore, in the following description of the relay 1 in this other embodiment, the structures that have been described in the Figures 1 to 8 embodiment will not be repeated. In addition, the same reference signs are used to label the structures that are the same as those of the relay 1 described in the Figures 1 to 8 embodiment. Therefore, in the following description of this embodiment, mainly for theFigures 1 to 8 The differences between the relay 1 of the embodiments will be described. Among them, the relay 1 of this other embodiment further includes a baffle 30, which is arranged between the metal cup 20 and the coil pin 11 and protrudes from the cup mouth of the metal cup 20. The setting of the baffle 30 can increase the electrical distance between the electromagnetic coil pin 13 and the metal cup 20, and can prevent the glue 80 (see Figure 1 ) from entering the space between the coil pin 13 and the electromagnetic coil 11.

[0097] In this embodiment, the magnetic conductor 10 has a bottom wall 101 and two opposite side walls 102. The electromagnetic coil 11 is arranged in the space surrounded by the bottom wall 101 and the side walls 102. The iron core pushing assembly 12 is arranged in the space surrounded by the electromagnetic coil 11. The electromagnetic coil 11 is provided with a coil pin 13, and the coil pin 13 extends in a direction away from the bottom wall 101. The metal cup 20 is arranged at one end of the two side walls 102 of the magnetic conductor 10 and is away from the bottom wall 101.

[0098] In this embodiment, a support cover 60 for supporting the static contact 22 is arranged in the inner cavity of the metal cup 20. A groove 24 is arranged on the support cover 60, and an auxiliary lead-out piece 23 is arranged in the groove 24. Both the auxiliary lead-out piece 23 and the coil pin 13 are connected to the connection assembly 132. One end of the connection assembly 132 is connected to the coil pin 13 and the auxiliary lead-out piece 23, and the other end is connected to the PCB board.

[0099] Figure 10 Shows Figure 9 The structure of the relay 1 of the present application shown in another angle, where Figure 10 The outer shell cover 500 is also shown.

[0100] As Figure 10 shown, the baffle 30 includes a plate body 301. Both ends of the plate body 301 have plate ears 302. The plate ears 302 are bent towards the metal cup 20. The plate ears 302 fit the arc surface section 2011, and the plate body 301 fits the flat surface section 2012. The baffle 30 is integrally arranged between the metal cup 20 and the coil pin 13.

[0101] The baffle 30 adopts the shape of a flat plate body 301 and two plate ears 302 on both sides. The structure is simple, and it can adapt to the shape of the metal cup 20, realizing that a simple structure can increase the electrical distance between the coil pin 13 and the metal cup 20, and prevent the glue 80 (see Figure 1 ) from entering the space between the coil pin 13 and the electromagnetic coil 11. Improve the reliability of the relay 1, reduce the defective rate of the relay 1, and thus reduce the production cost. The baffle 30 can be fixed to the metal cup 20 by means of pasting or screwing.

[0102] In some other embodiments, the baffle can also be partially located between the metal cup 20 and the coil pin 13 and partially located on the support cover 60. For example, it is in a shape similar to an "L".

[0103] Figure 11 The internal structure of the relay 1 of the present application with the outer housing 501 installed and the outer housing cover 500 removed is shown, where Figure 11 is Figure 10 the schematic diagram after sectioning along the B-B direction marked in. As can be seen from Figure 11 it, a moving contact piece 21 is arranged below the static contact 22 of the relay 1 of the present application. The moving contact piece 21 is connected to the iron core pushing assembly 12. The iron core pushing assembly 12 includes structures such as a moving iron core 121, a static iron core 122, a spring 123, and a push rod 124. The static iron core 122 and the moving iron core 121 are arranged in the metal cylinder 50. A magnetic conduction cylinder 14 is arranged on the periphery of the metal cylinder 50, and an electromagnetic coil 11 is arranged on the periphery of the magnetic conduction cylinder 14. The iron core pushing assembly 12 is driven by the electromagnetic coil 11. The push rod 124 is partially arranged in the moving iron core 121 and can be driven by the moving iron core 121 to move upward, thereby driving the moving contact piece 21 to move upward to contact the static contact 22. The magnetic conduction cylinder 14, the electromagnetic coil 11, and the lower parts of the moving iron core 121, the static iron core 122, and the push rod 124 of the iron core pushing assembly 12 are all arranged in the magnetic conductor 10. A spring 123 is arranged between the moving iron core 121 and the static iron core 122. In the case where the moving iron core 121 and the static iron core 122 do not generate mutual attraction, the moving iron core 121 and the static iron core 122 are separated due to the elastic force of the spring 123. The push rod 124 extends upward and is connected to the moving contact piece 21. The moving contact piece 21 is arranged in the metal cup 20 and can be brought into contact with or separated from the static contact 22 by the push of the push rod 124, thereby realizing the connection or disconnection of the circuit. The static contact 22 is supported inside the metal cup 20 through the support cover 60. A second hole 203 through which the push rod can pass is opened at the bottom of the metal cup 20.

[0104] In this embodiment, the baffle 30 is arranged between the metal cup 20 and the coil pin 13. The baffle 30 is made of an insulating material. It can be plastic, ceramic, glass, etc. or other insulating materials. The insulating material can increase the electrical distance between the metal cup 20 and the coil pin 13.

[0105] The above is a detailed description of several exemplary embodiments of the relay 1 proposed in the present application. The following will describe the usage process of the relay 1 proposed in the present application in detail.

[0106] Combined with the attached Figures 1 to 8, for the relay 1 of the present application, when the electromagnetic coil 11 is energized, an electromagnetic effect will be generated. The static iron core 122 attracts the moving iron core 121 to move upward, and the moving iron core 121 can drive the push rod 124 to move upward. Thereby driving the moving contact piece 21 to move upward. When the moving contact piece 21 contacts the static contact 22, the moving contact piece 21 is blocked by the static contact 22, while the push rod 124 will still continue to move upward until the over-travel is completed.

[0107] After the electromagnetic coil 11 is de-energized, the moving iron core 121 returns to its original position under the action of the spring 123, thereby driving the push rod 124 to descend, separating the moving contact piece 21 from the static contact 22, and the circuit is disconnected.

[0108] During the on / off process of the moving contact piece 21 and the static contact 22, heat will be generated. Since the moving / static contact part of the relay 1 and the electromagnetic coil 11 are isolated by the metal cup 20 and the magnetic conductor 10, the moving / static contact part of the relay 1 and the electromagnetic coil 11 will not affect each other.

[0109] Combined with the attached Figures 9 to 11 , in this embodiment, the working process of the relay 1 is the same as that of the embodiment in the attached Figures 1 to 8 , the difference is only that in this embodiment, a baffle 30 is provided between the metal cup 20 and the coil pin 13, increasing the electrical distance between the metal cup 20 and the coil pin 13, making the relay 1 work more reliably.

[0110] The above is the usage process of the relay 1 of the present application. From the above usage process, it can be seen that for the relay 1 of the present application, the metal cup 20 and the magnetic conductor 10 are used to separately arrange the moving / static contact part and the electromagnetic coil of the relay in independent cavities, and the electromagnetic coil does not require high-temperature aging treatment. A yoke iron plate 40 is provided between the metal cup 20 and the magnetic conductor 10, avoiding the reduction of the magnetic conduction loop area and improving the magnetic conduction efficiency.

[0111] In summary, the relay proposed in the present application includes a metal cup, a yoke iron plate, a magnetic conductor, and a metal cylinder. The metal cup includes a cup wall and a cup bottom connected to the cup wall; a part of the moving contact piece and the static contact is arranged inside the metal cup. The yoke iron plate is arranged on the surface of the cup bottom of the metal cup away from the cup wall, and the yoke iron plate is provided with a first hole. The magnetic conductor is connected to the yoke iron plate, and an electromagnetic coil is arranged inside the magnetic conductor. The metal cup and the magnetic conductor are used to separately arrange the moving / static contact part and the electromagnetic coil of the relay in independent cavities. The electromagnetic coil does not require high-temperature aging treatment, and the gas generated by the electromagnetic coil during subsequent use will not affect the cavity where the moving / static contact part is located. A yoke iron plate is also provided between the metal cup and the magnetic conductor, increasing the area of the magnetic conduction loop, improving the magnetic conduction efficiency, and having a relatively large magnetic attraction. The metal cylinder has a cylinder wall and a cylinder bottom connected to the cylinder wall, is arranged in the space surrounded by the electromagnetic coil, and one end of the cylinder wall of the metal cylinder away from the cylinder bottom passes through the first hole and is connected to the cup bottom of the metal cup.

[0112] It is understood that the various embodiments / implementations provided in this application can be combined with each other without contradiction, and no further examples will be given here.

[0113] In the above exemplary embodiments, the relay proposed in this application is described by taking its application to an electric control device as an example. It is easy for those skilled in the art to understand that in order to apply the relevant designs of this application to other types of devices, various modifications, additions, substitutions, deletions or other changes are made to the specific embodiments, and these changes are still within the scope of the principle of the relay proposed in this application.

[0114] It should be noted here that the relays shown in the drawings and described in this specification are only a few examples of the many relays that can adopt the principle of this application. It should be clearly understood that the principle of this application is by no means limited to any details or any components of the relays shown in the drawings or described in this specification.

[0115] In the embodiments of the application, the terms "first", "second", "third" are only used for the purpose of description and cannot be understood as indicating or implying relative importance; the term "a plurality" means two or more, unless otherwise clearly defined. Terms such as "mounted", "connected", "connected to", "fixed" and other terms should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; "connected" can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the application can be understood according to specific circumstances.

[0116] In the description of the embodiments of the application, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the embodiments of the application and simplifying the description, rather than indicating or implying that the device or unit referred to must have a specific direction, be constructed and operated in a specific orientation, and therefore, it cannot be understood as a limitation to the embodiments of the application.

[0117] In the description of this specification, the descriptions of the terms "one embodiment", "some embodiments", "specific embodiments", etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the embodiments of the application. In this specification, the schematic descriptions of the above terms do not necessarily refer to the same embodiment or instance. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0118] The above are only the preferred embodiments of the application examples and are not used to limit the application examples. For those skilled in the art, the application examples can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the application examples shall be included within the protection scope of the application examples.

Claims

1. A relay, characterized in that: include: A metal cup, the metal cup comprising a cup wall and a cup bottom connected to the cup wall; a moving contact piece and a part of a stationary contact are arranged inside the metal cup; A yoke iron plate, the yoke iron plate is arranged on a side of the cup bottom of the metal cup away from the cup wall, and the yoke iron plate is provided with a first hole; A magnetic conductor, the magnetic conductor is connected to the yoke iron plate, and an electromagnetic coil is arranged inside the magnetic conductor; The metal cylinder has a cylinder wall and a cylinder bottom connected to the cylinder wall, and is arranged in the space surrounded by the electromagnetic coil. One end of the cylinder wall of the metal cylinder away from the cylinder bottom passes through the first hole and is connected to the cup bottom of the metal cup.

2. The relay according to claim 1, characterized in that: The cup wall and the cup bottom of the metal cup are integrally formed.

3. The relay according to claim 1, characterized in that: The cup wall and the cup bottom of the metal cup are separately formed and sealed and fixed together.

4. The relay according to claim 1, characterized in that: The material of the metal cylinder is non-magnetic conductive material.

5. The relay according to claim 1, characterized in that: The metal cylinder and the cup bottom of the metal cup are connected by welding.

6. The relay according to claim 1, characterized in that: One end of the cylinder wall of the metal cylinder away from the cylinder bottom has a folded edge, and the metal cylinder is connected to the cup bottom of the metal cup through the folded edge.

7. The relay according to claim 6, characterized in that: The cup bottom of the metal cup has a second hole, which is connected to the first hole. On a plane parallel to the cup bottom of the metal cup, the projection of the folded edge is located inside the projection of the first hole and outside the projection of the second hole.

8. The relay according to claim 1, characterized in that: The material of the magnetic conductor is a magnetic metal material or a magnetic alloy material.

9. The relay according to claim 1, characterized in that: The electromagnetic coil is connected to a coil pin, and the coil pin extends from the magnetic conductor toward the metal cup. The relay further includes: The baffle is arranged between the metal cup and the coil pin and protrudes from the cup mouth of the metal cup.

10. The relay according to claim 1, characterized in that: The relay further comprises: A support cover, disposed in the inner cavity of the metal cup and supporting the static contact; The heat insulating member is arranged between the stationary contact and the support cover, and separates the stationary contact and the support cover.

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