Relay

Abstract

The utility model discloses a relay which comprises a magnetizer, a metal cup and a spacer. The magnetizer is provided with a bottom wall and a side wall, an electromagnetic coil is arranged in a space defined by the bottom wall and the side wall, and a coil pin of the electromagnetic coil extends in the direction away from the bottom wall. The metal cup is arranged at one end, far away from the bottom wall, of the side wall of the magnetizer, part of the static contact and the moving contact are arranged in an inner cavity of the metal cup, and the spacer is arranged on the metal cup, located between the metal cup and the coil pin and protruded out of a cup opening of the metal cup. The spacer may increase the electrical distance between the metal cup and the coil pin. And the metal cup can avoid the coil pin.

Description

Technical Field

[0001] The present application relates to the technical field of electric control devices, and in particular to a relay. Background Art

[0002] A relay is an electronic control device with a control circuit (also known as an input circuit) and a controlled system (also known as an output circuit). It is commonly used in automatic control circuits. A relay is essentially an "automatic switch" that uses a smaller current to control a larger one. Therefore, it plays a role in automatic regulation, safety protection, and circuit switching.

[0003] A high-voltage DC relay is a type of relay consisting primarily of an electromagnetic coil, a stationary contact, and a moving contact. The two contactors form the relay's moving / static contact portion. Controlling the on / off power of the electromagnetic coil enables the static and moving contacts to engage and disengage, thereby closing and opening the relay contacts. Existing high-voltage DC relays incorporate the electromagnetic coil and moving / static contact portion into a single iron cup. This high-temperature exposure to the coil generates organic substances such as benzene and acetone, which affect the contact resistance of the moving / static contact portion. Consequently, the coil must be aged at high temperatures before assembly, resulting in low production efficiency. Utility Model Content

[0004] The main purpose of this application is to provide a relay in which an electromagnetic coil and a dynamic / static contact part are respectively arranged in two independent cavities, without affecting the coil pins, increasing the overall volume of the product, and avoiding glue leakage during the glue filling process.

[0005] To achieve the above objectives, this application adopts the following technical solutions:

[0006] According to one aspect of the present application, a relay is provided, comprising a magnetizer, a metal cup, and a spacer. The magnetizer has a bottom wall and a side wall, an electromagnetic coil is disposed within the space enclosed by the bottom wall and the side wall, the electromagnetic coil being provided with coil pins extending in a direction away from the bottom wall. A metal cup is disposed at one end of the side wall of the magnetizer away from the bottom wall, a portion of a static contact and a moving contact piece being disposed within the inner cavity of the metal cup, the metal cup being away from the coil pins. The spacer is disposed within the metal cup, located between the metal cup and the coil pins, and protruding from the cup opening of the metal cup.

[0007] According to some embodiments of the present application, the orthographic projection of the metal cup on the upper surface of the bottom wall of the magnetic conductor does not overlap with the orthographic projection of the coil pin on the upper surface of the bottom wall.

[0008] According to some embodiments of the present application, the metal cup includes a cup wall and a cup bottom connected to the cup wall. The cross-section of the cup wall of the metal cup is a non-circular closed ring, thereby forming an escape space on the outside of the cup wall. The escape space is located above the bottom wall of the magnetic conductor for the coil pin to extend.

[0009] According to some embodiments of the present application, the bottom wall of the magnetizer is circular. According to some embodiments of the present application, the sum of the orthographic projection areas of the metal cup and the avoidance space on the upper surface of the bottom wall of the magnetizer is equal to the area of the upper surface of the bottom wall of the magnetizer.

[0010] According to some embodiments of the present application, the cup wall includes a first section and a second section, the second section is connected to the first section and together with the first section forms the inner cavity of the metal cup, and the coil pin is located on the side of the second section away from the inner cavity of the metal cup.

[0011] According to some embodiments of the present application, the first section is a curved surface, the second section is a curved surface, and the curvature radius of the second section is different from that of the first end.

[0012] According to some embodiments of the present application, the first section is a curved surface, and the second section is a flat surface.

[0013] According to some embodiments of the present application, the cup bottom includes a curved segment and a straight segment, and the curved segment and the straight segment are connected to make the cup bottom "D"-shaped, the curved segment is connected to the first segment, and the straight segment is connected to the second segment.

[0014] According to some embodiments of the present application, the spacer includes a plate body, and both ends of the plate body have folded edges, and the folded edges are bent toward the metal cup. The folded edges are attached to the first section, and the plate body is attached to the second section.

[0015] According to some embodiments of the present application, the spacer includes a plate cover and a plate seat, the plate seat has a pin hole, the coil pin passes through the pin hole, the plate cover is connected to the plate seat, and covers a part of the cup mouth of the metal cup, and the plate seat is located between the metal cup and the coil pin.

[0016] According to some embodiments of the present application, the inner cavity of the metal cup is provided with a support cover supporting the static contact, the support cover is provided with a first groove, an auxiliary lead-out piece is provided in the first groove, the plate cover has a notch to avoid the auxiliary lead-out piece and a convex strip to position the spacer, and the convex strip is positioned in the first groove.

[0017] According to some embodiments of the present application, the board seat has two second grooves, the two second grooves are arranged opposite to each other in the extension direction of the coil pin, and the pin hole connects the two second grooves.

[0018] According to some embodiments of the present application, the spacer is made of insulating material.

[0019] According to some embodiments of the present application, the metal cup includes a cup wall and a cup bottom connected to the cup wall, and the cup wall and the cup bottom of the metal cup are separately molded and then sealed and fixed together.

[0020] According to some embodiments of the present application, the metal cup includes a cup wall and a cup bottom connected to the cup wall, and the cup wall and the cup bottom of the metal cup are integrally formed.

[0021] According to some embodiments of the present application, the relay further includes: a yoke plate, which is arranged between the magnetic conductor and the outer surface of the cup bottom of the metal cup, and is connected to the end of the side wall of the magnetic conductor away from the bottom wall.

[0022] According to some embodiments of the present application, the relay further includes: a metal cylinder having a cylinder wall and a cylinder bottom connected to the cylinder wall, the metal cylinder is arranged in the space surrounded by the electromagnetic coil, and the metal cylinder faces and is connected to the metal cup.

[0023] According to some embodiments of the present application, the relay further comprises: a support cover and a thermal insulation member. The support cover is disposed within the inner cavity of the metal cup and supports the stationary contact. The thermal insulation member is disposed between the stationary contact and the support cover and separates the stationary contact from the support cover.

[0024] According to some embodiments of the present application, the thermal conductivity of the thermal insulation member is smaller than the thermal conductivity of the static contact.

[0025] One embodiment of the above application has at least the following advantages or beneficial effects:

[0026] In the relay of the present invention, a metal cup is used to separate the dynamic / static contact portion and the electromagnetic coil, placing them in independent cavities. This eliminates the need for high-temperature aging treatment for the electromagnetic coil, and gases generated during subsequent use will not affect the cavity containing the dynamic / static contact portion. The metal cup is used to avoid the electromagnetic coil pins, effectively sealing the dynamic / static contact portion while maintaining proper connection to the electromagnetic coil pins and minimizing the overall product size. The relay of the present invention also includes a spacer positioned within the metal cup, located between the metal cup and the coil pins and protruding from the cup's rim. The spacer increases the electrical distance between the electromagnetic coil pins and the metal cup and prevents glue from entering the space between the coil pins and the coil during glue pouring, thereby increasing glue usage and costs. Furthermore, if glue enters the space between the coil pins and the coil during glue pouring, it will compromise the relay's airtightness and cause the electromagnetic coil to become encapsulated by the glue, hindering heat dissipation. Furthermore, curing of the glue generates stress, which can cause the electromagnetic coil to break, rendering the relay inoperable.

[0027] Furthermore, the metal cup of the relay in the embodiment of the present application adopts a "D" shape, which ensures the accommodating space of the inner cavity of the metal cup and provides lead-out space for the coil pins without increasing the product volume. The metal cup has a simple structure, is easy to process, and is easy to install.

[0028] Furthermore, the spacer of the relay in the embodiment of the present application is composed of a plate cover and a plate base, and the plate cover and the plate base are connected in an "L" shape, which is also conducive to the firm fixation of the spacer on the metal cup.

[0029] Furthermore, the relay of the embodiment of the present application also includes a support cover and a heat insulating member. The heat insulating member is arranged between the support cover and the static contact, which can prevent the static contact and the support cover from contacting each other and reduce the heat transferred from the static contact to the support cover. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a perspective schematic diagram of an embodiment of the relay of the present application.

[0031] Figure 2 yes Figure 1 The schematic diagram of the exploded three-dimensional structure of the relay shown from another angle (the relay housing cover is added).

[0032] Figure 3 yes Figure 2 Schematic diagram after the installation is completed.

[0033] Figure 4 yes Figure 3 AA cross-sectional structural diagram after installing the outer shell and removing the outer shell cover.

[0034] Figure 5 It is a three-dimensional schematic diagram of another embodiment of the relay of the present application.

[0035] Figure 6 yes Figure 5 The schematic diagram of the exploded three-dimensional structure of the relay shown from another angle (the relay housing cover is added).

[0036] Figure 7 yes Figure 6 Schematic diagram of the BB cross-section structure after the outer shell is installed.

[0037] Figure 8 yes Figure 5 Schematic diagram of the structure of the spacer.

[0038] Figure 9 It is a structural diagram of the dynamic / static contact part of the relay of this application.

[0039] Figure 10 yes Figure 9 A structural diagram from another angle.

[0040] Figure 11 yes Figure 9 Schematic diagram of the CC cross-sectional structure.

[0041] Figure 12 It is a schematic diagram of the separation structure of the dynamic / static contact part and the coil part of the relay of the present application.

[0042] Figure 13 It is a schematic diagram of the separation structure of the metal cup, yoke iron plate, metal cylinder and magnetic conductor of the present application.

[0043] Figure 14 It is a schematic diagram of one embodiment of the metal cup, yoke iron plate and metal cylinder of the present application.

[0044] Figure 15 It is a schematic diagram of another embodiment of the metal cup and the metal cylinder of the present application.

[0045] Figure 16 This is a schematic diagram of the separated structure of the relay of the present application (without the magnetic conductor and electromagnetic coil).

[0046] Figure 17 It is a schematic cross-sectional structural diagram of the relay of the present application along a plane connecting the center lines of the two static contacts.

[0047] The description of the accompanying drawings is as follows:

[0048] 1- Relay.

[0049] 10-Magnetic conductor.

[0050] 11- Electromagnetic coil.

[0051] 12-Iron core push assembly.

[0052] 13-Coil pin.

[0053] 14-Magnetic cylinder.

[0054] 20-Metal cup.

[0055] 21-Moving contact piece.

[0056] 22-static contact.

[0057] 23-Auxiliary lead-out piece.

[0058] 24-First groove.

[0059] 30- Spacer.

[0060] 40-Yoke iron plate.

[0061] 50-Metal cylinder.

[0062] 51-bottom of the tube.

[0063] 52-cylinder wall.

[0064] 60-Support cover.

[0065] 70-Thermal insulation.

[0066] 80-Glue.

[0067] 101-Bottom wall.

[0068] 102-side wall.

[0069] 121-moving iron core.

[0070] 122-static iron core.

[0071] 123-spring.

[0072] 124-Putter.

[0073] 131-wire.

[0074] 132-Connection components.

[0075] 201-cup wall.

[0076] 2011-First paragraph.

[0077] 2012-Second paragraph.

[0078] 202-Cup bottom.

[0079] 301-Plate body.

[0080] 302-Folded edge.

[0081] 303-plate cover.

[0082] 3031-Gap.

[0083] 3032-Convex strips.

[0084] 304-plate seat.

[0085] 3041-Pin hole.

[0086] 3042, 3043-second groove.

[0087] 500-housing cover.

[0088] 501-Outer shell. DETAILED DESCRIPTION

[0089] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete and will fully convey the concepts of the example embodiments to those skilled in the art. Like reference numerals in the figures represent like or similar structures, and thus their detailed description will be omitted.

[0090] It is understood that the terms "including" and "having" and any variations thereof in the embodiments of the present application are intended to cover non-exclusive inclusions. For example, a process, method, system, product, or apparatus comprising a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or components inherent to the process, method, product, or apparatus.

[0091] 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 include different orientations of the device in addition to the orientation shown in the figures. For example, if the device in a figure is turned over, the element described as being "lower" or "bottom" of other elements will be oriented "upper" or "top" of the other elements. Thus, the exemplary term "lower" can include both "lower" and "top" orientations, and the term "bottom" can include both "bottom" and "top" orientations, depending on the particular orientation of the figure. Similarly, if the device in a figure is turned over, the element described as being "lower" or "bottom" of other elements will be oriented as being "upper" or "top" of the other elements. Thus, the exemplary terms "bottom" or "below" can include both "upper" and "lower" orientations.

[0092] Figures 1 to 4 、 Figures 9 to 14 、 Figures 16 and 17An embodiment of the relay 1 of the present application is shown, wherein the relay 1 includes a magnetizer 10, a metal cup 20 and a spacer 30. The magnetizer 10 has a bottom wall 101 and two opposite side walls 102. In some other embodiments, the side wall 102 can also be a closed circle. Both the magnetizer and the metal cup can be made of magnetic conductive materials such as iron. An electromagnetic coil 11 is provided in the space enclosed by the bottom wall 101 and the side wall 102. An iron core pushing assembly 12 is provided in the space enclosed 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 connected to the ends of the two side walls 102 of the magnet 10, away from the bottom wall 101. The interior of the metal cup 20 houses a portion of a static contact 22 and a movable contact piece 21. The movable contact piece 21 is connected to the core pusher assembly 12. The orthographic projection of the metal cup 20 on the upper surface of the bottom wall 101 of the magnet 10 does not overlap with the orthographic projection of the coil pin 13 on the upper surface of the bottom wall 101 of the magnet 10. The metal cup 20 avoids the coil pin 13. A spacer 30 is disposed within the metal cup 20, located between the metal cup 20 and the coil pin 13, and protrudes from the rim of the metal cup 20.

[0093] The relay 1 of the present application uses a metal cup 20 to separate the dynamic / static contact parts 21, 22 and the electromagnetic coil 11 of the relay 1 into 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 dynamic / static contact parts are located. The coil pin 13 extends from the starting point to the end point of the coil pin 13 in a direction away from the bottom wall 101. The extension direction is perpendicular to the bottom wall 101 and there is no bend. The relay 1 of the embodiment of the present application uses a metal cup 20 to avoid the coil pin 13, which can achieve the sealing of the dynamic / static contact part without affecting the lead-out of the coil pin 13 and without increasing the volume of the entire product.

[0094] Furthermore, the relay 1 of the embodiment of the present application uses a spacer 30 disposed on the metal cup 20, located between the metal cup 20 and the coil pin 13, and protruding from the cup mouth of the metal cup 20. The spacer 30 can increase the electrical distance between the coil pin 13 and the metal cup 20, and can prevent the glue 80 (see Figure 17 ) enters the space between the coil pin 13 and the electromagnetic coil 11.

[0095] In this embodiment, one end of the connecting component 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.

[0096] In this embodiment, the bottom wall 101 of the magnetic conductor 10 is circular. In this embodiment, the inner cavity of the metal cup 20 is provided with a support cover 60 (see Figure 9), a first groove 24 is provided on the support cover 60, an auxiliary lead-out piece 23 is provided in the first groove 24, and the auxiliary lead-out piece 23 and the coil pin 13 are both connected to the connecting component 132.

[0097] In this embodiment, if Figure 9 and Figure 10 As shown, the metal cup 20 includes a cup wall 201 and a cup bottom 202 connected to the cup wall 201. The cross-section of the cup wall 201 of the metal cup 20 is a non-circular closed ring, thereby forming a clearance space outside the cup wall 201. The clearance space is located above the bottom wall 101 of the magnetic conductor 10 and provides space for the coil pins 13 to extend. This does not increase the product volume and does not affect the lead-out of the coil pins 13.

[0098] In this embodiment, the sum of the areas of the orthographic projections of the metal cup 20 and the escape space on the upper surface of the bottom wall 101 of the magnetizer 10 is equal to the area of the upper surface of the bottom wall 101 of the magnetizer 10 .

[0099] In this embodiment, the cup wall 201 includes a first section 2011 and a second section 2012 . The second section 2012 is connected to the first section 2011 and together with the first section 2011 , forms an inner cavity of the metal cup 20 .

[0100] The metal cup 20 is formed by connecting a first section 2011 and a second section 2012. The internal cavity of the metal cup 20 is spacious enough to accommodate structures such as the support cover 60 and the static contact 22. The internal cavity of the metal cup 20 houses the dynamic and static contact components of the relay 1 of the present application. Furthermore, the metal cup 20 is formed by connecting the first section 2011 and the second section 2012, allowing the metal cup 20 to avoid the coil pin 13 of the electromagnetic coil 11 of the relay 1, thereby reducing the size of the relay 1.

[0101] In this embodiment, the first section 2011 is a curved surface, and the second section 2012 is a flat surface. In other embodiments, the first section 2011 is a curved surface, the second section 2012 is a curved surface, and the curvature radius of the second section 2012 and the first end 2011 are different.

[0102] Figure 11 Shown Figure 9 The cross-sectional structure of CC is the dynamic / static contact portion and the core push assembly 12 formed by the metal cup 20 of the relay 1 of the present application. Part of the static contact 22, the dynamic contact piece 21, and the support cover 60 are all disposed in the inner cavity of the metal cup 20. The cup bottom 202 of the metal cup 20 is provided with a through hole, through which the push rod is connected to the dynamic contact piece 21.

[0103] Figure 12The relay 1 of the present invention shows a structure that separates the moving / static contact and coil components. Metal cup 20 forms the moving / static contact component, with the coil component located below. Electromagnetic coil 11 is housed within the coil component. Metal cup 20 separates the moving / static contact and coil components into independent cavities, eliminating the need for high-temperature aging treatment for electromagnetic coil 11. Gas generated during subsequent use will not affect the cavity containing the moving / static contact components.

[0104] In this embodiment, relay 1 further comprises a metal cylinder 50 having a cylinder wall 52 and a cylinder bottom 51 connected to cylinder wall 52. Metal cylinder 50 is disposed within the space enclosed by electromagnetic coil 11, and core pusher assembly 12 is disposed within metal cylinder 50. Metal cylinder 50 faces and is connected to metal cup 20. Metal cylinder 50 accommodates core pusher assembly 12 and seals the through-hole in bottom 202 of metal cup 20 through which push rod 124 passes, completely isolating the cavity within the metal cup from the space outside metal cylinder 50. Metal cylinder 50 can be made of non-magnetic materials such as stainless steel.

[0105] In this embodiment, relay 1 further includes a yoke plate 40 disposed between magnetizer 10 and the outer surface of bottom 202 of metal cup 20, and connected to the ends of side walls 102 of magnetizer 10, distal from bottom wall 101. The provision of yoke plate 40 avoids the problem of reduced magnetic permeability caused by rounded corners at the junction between side walls 102 and bottom 202 of metal cup 20, while also ensuring the size of the interior space of magnetizer 10 without affecting the winding space of electromagnetic coil 11.

[0106] Figure 13 The figure shows the separation structure of the metal cup 20, yoke plate 40, metal cylinder 50 and magnet 10 of the present application. It can be clearly seen that the yoke plate 40 is arranged below the metal cup 20, and a hole is opened in the center of the yoke plate 40. The metal cylinder 50 passes through the hole of the yoke plate 40 and is connected to the metal cup 20.

[0107] In this embodiment, if Figure 14 As shown, the metal cup 20 includes a cup wall 201 and a cup bottom 202 connected to the cup wall 201. 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.

[0108] In some other embodiments, such as Figure 15 As shown, the metal cup 20 includes a cup wall 201 and a cup bottom 202 connected to the cup wall 201. The cup wall 201 and the cup bottom 202 of the metal cup 20 are formed separately and then sealed and fixed together. The separate forming is conducive to simplifying the processing.

[0109] like Figure 16 and Figure 17As shown, relay 1 further includes a support cover 60 and a thermal insulator 70. The support cover 60 is positioned within the inner cavity of the metal cup 20 and supports the stationary contact 22. The thermal insulator 70 is positioned between the stationary contact 22 and the support cover 60, separating the stationary contact 22 from the support cover 60. Providing the thermal insulator 70 between the support cover 60 and the stationary contact 22 prevents contact between the stationary contact 22 and the support cover 60, minimizing heat generated by the stationary contact 22 and transferring it to the support cover 60. This improves the stability and reliability of the relay 1's performance.

[0110] In this embodiment, the thermal conductivity of the heat insulating member 70 is smaller than that of the static contact 22. The heat insulating member 70 can be made of a material with a smaller thermal conductivity, such as ceramics or glass, to isolate the heat generated by the static contact 22 from the support cover 60 as much as possible, thereby reducing the deformation of the support cover 60 due to heat. Figure 17 Also shown are wires 131 , which are wires of an external connector.

[0111] Figure 2 Shown Figure 1 Another perspective structure of the relay 1 of the present application is shown, wherein Figure 2 Also shown is a housing cover 500.

[0112] like Figures 2 to 3 As shown, the spacer 30 includes a plate body 301, and both ends of the plate body 301 have folded edges 302, which are bent toward the metal cup 20, the folded edges 302 fit the first section 2011, and the plate body 301 fits the second section 2012. The spacer 30 is arranged as a whole between the metal cup 20 and the coil pin 13.

[0113] The spacer 30 is in the shape of a flat plate 301 and folded edges 302 on both sides. It has a simple structure and can adapt to the shape of the metal cup 20. The simple structure can increase the electrical distance between the electromagnetic coil pin 13 and the metal cup 20, thereby avoiding the glue 80 (see Figure 17 ) into the space between coil pin 13 and electromagnetic coil 11. This improves the reliability of relay 1 and reduces the defect rate of relay 1, thereby reducing production costs. Spacer 30 can be pre-assembled using an interference fit and then fixed to metal cup 20 after glue injection.

[0114] Figure 4 The internal structure of the relay 1 of the present application is shown with the housing 501 installed and the housing cover 500 removed. Figure 4 yes Figure 3 The schematic diagram after the AA section is marked in the figure. Figure 4As can be seen, the relay 1 of the present application has a movable contact piece 21 disposed below the static contact 22. The movable contact piece 21 is connected to the core push assembly 12. The core push assembly 12 includes a movable core 121, a static core 122, a spring 123, a push rod 124, and other structures. A magnetic cylinder 14 is disposed around the static core 122, and an electromagnetic coil 11 is disposed around the magnetic cylinder 14. The magnetic cylinder 14, the electromagnetic coil 11, and the lower portions of the movable core 121, the static core 122, and the push rod 124 of the core push assembly 12 are all disposed within the magnetic conductor 10. A spring 123 is disposed between the movable core 121 and the static core 122. When the movable core 121 and the static core 122 do not generate mutual attraction, the elastic force of the spring 123 separates the movable core 121 and the static core 122. Push rod 124 extends upward and connects to movable contact 21, which is located within metal cup 20. Push rod 124 pushes movable contact 21 into or out of contact with stationary contact 22, thereby connecting or disconnecting the circuit. Stationary contact 22 is supported within metal cup 20 by support cover 60. The bottom of metal cup 20 has a through-hole for the push rod to pass through.

[0115] In this embodiment, the spacer 30 is made of insulating material, such as plastic, ceramic, glass, or other insulating materials. The insulating material can increase the electrical distance between the metal cup 20 and the coil pin 13.

[0116] In this embodiment, the cup bottom 202 includes a curved segment and a straight segment, which are connected to form a "D" shape. The curved segment is connected to the first segment 2011, and the straight segment is connected to the second 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 with an overall "D" shape. In some other embodiments, the metal cup 20 can also be other, as long as there is space for the static contact 22, the support cover 60, and the moving contact piece 21, and the outer periphery of the metal cup 20 can just avoid the coil pin 13.

[0117] like Figures 5 to 8 Another embodiment of the relay 1 of the present application is shown. The relay 1 of this embodiment is Figures 1 to 4 、 Figures 9 to 14 、 Figures 16 and 17 Therefore, in the following description of the relay 1 of the other embodiment, the basic structure is substantially the same as that of the relay 1 of the embodiment. Figures 1 to 4 、 Figures 9 to 14 、 Figures 16 and 17 In addition, Figures 1 to 4 、 Figures 9 to 14 、 Figures 16 and 17The same reference numerals are used for the same structures as those of the relay 1 described in the embodiment of FIG. Figures 1 to 4 、 Figures 9 to 14 、 Figures 16 and 17 The difference between the relay 1 of the embodiment of the present invention and the embodiment of the present invention is described. Among them, the relay 1 of the other embodiment mainly has a spacer 30 structure and Figures 1 to 4 、 Figures 9 to 14 、 Figures 16 and 17 The structure of the spacer 30 of the relay 1 is different.

[0118] See also Figures 6 to 8 , another embodiment of the relay 1 of the present application includes a spacer 30 including a plate cover 303 and a plate base 304, the plate base 304 has a pin hole 3041, the coil pin 13 passes through the pin hole 3041, the plate cover 303 is connected to the plate base 304, and covers a part of the cup mouth of the metal cup 20, and the plate base 304 is located between the metal cup 20 and the coil pin 13.

[0119] The spacer 30 is formed in the form of a plate cover 303 and a plate seat 304 to increase the electrical distance between the electromagnetic coil pin 13 and the metal cup 20 to avoid glue 80 (see Figure 17 ) enters the space between the coil pin 13 and the electromagnetic coil 11, and also provides a certain support and positioning effect for the coil pin 13. In addition, the "L"-shaped connection between the plate cover 303 and the plate base 304 also facilitates the firm fixation of the spacer 30 on the metal cup 20.

[0120] In this embodiment, the inner cavity of the metal cup 20 is provided with a support cover 60 (see Figure 9 ), the support cover 60 is provided with a first groove 24, in which the auxiliary lead-out tab 23 is disposed. The plate cover 303 has a notch 3031 that allows for the auxiliary lead-out tab 23 to be positioned, and a protrusion 3032 that positions the spacer 30. The protrusion 3032 is positioned in the first groove 24. With the aid of the first groove 24 of the support cover 60 for the static contact 22, the protrusion 3032 of the spacer 30 is engaged in the first groove 24, thereby positioning and securing the spacer 30. The notch 3031 allows for the auxiliary lead-out tab 23 to be positioned.

[0121] In this embodiment, the plate base 304 has two second grooves 3042 and 3043, which are arranged in opposite directions along the extension direction of the coil pins 13. The pin hole 3041 connects the two second grooves 3042 and 3043. The plate base 304 has two upper and lower opposite second grooves 3042 and 3043, which can reduce the weight and material of the spacer 30 while ensuring the strength of the spacer 30 and the electrical distance between the metal cup 20 and the coil pins 13. The second grooves 3043 are arranged in a four-sided structure, which can further increase the electrical distance.

[0122] The above is a detailed description of several exemplary embodiments of the relay 1 proposed in this application. The following will describe in detail the use process of the relay 1 proposed in this application.

[0123] Combined with attachment Figures 1 to 17 In the relay 1 of the present application, when the electromagnetic coil 11 is energized, an electromagnetic effect is generated, causing the static iron core 122 to attract the movable iron core 121 upward, which in turn drives the push rod 124 upward. When the movable contact piece 21 contacts the static contact 22, the movable contact piece 21 is stopped by the static contact 22, while the push rod 124 continues to move upward until it reaches the end of its overtravel.

[0124] When 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 downward, separating the moving contact piece 21 and the static contact 22, and disconnecting the circuit.

[0125] During the on-off process of the moving contact piece 21 and the static contact 22 , heat is generated. Since the moving / static contact parts of the relay 1 and the electromagnetic coil 11 are isolated by the metal cup 20 , the moving / static contact parts of the relay 1 and the electromagnetic coil 11 do not affect each other.

[0126] The above is the use process of the relay 1 of the present application. From the above use process, it can be seen that the relay 1 of the present application sets the dynamic / static contact part of the relay 1 and the electromagnetic coil 11 in independent cavities respectively. The electromagnetic coil 11 will not be affected by the heat generated by the dynamic / static contact part, and the electromagnetic coil 11 does not need high-temperature aging treatment. Moreover, the gas generated during subsequent use will not affect the cavity where the dynamic / static contact part is located. The relay 1 of the present application uses a metal cup 20 to avoid the coil pin 13 of the electromagnetic coil 11, which can achieve the sealing of the dynamic / static contact part without affecting the lead-out of the coil pin 13 and without increasing the volume of the entire product.

[0127] In summary, the relay 1 proposed in this application includes a magnetic conductor 10, a metal cup 20, and a spacer 30. The magnetic conductor 10 has a bottom wall 101 and side walls 102. An electromagnetic coil 11 is disposed within the space enclosed by the bottom wall 101 and the side walls 102. An iron core pusher assembly 12 is disposed within the space enclosed by the electromagnetic coil 11. The electromagnetic coil 11 is provided with a coil pin 13, which extends away from the bottom wall 101. The metal cup 20 is connected to the end of the side wall 102 of the magnetizer 10 away from the bottom wall 101. The interior of the metal cup 20 houses a portion of a static contact 22 and a movable contact piece 21. The movable contact piece 21 is connected to the core pusher assembly 12. The projection of the metal cup 20's interior onto the bottom wall 101 of the magnetizer 10 is within the space enclosed by the bottom wall 101 and the side wall 102. The projection of the coil pin 13 onto the bottom wall 101 of the magnetizer 10 is outside the projection of the metal cup 20 and within the space enclosed by the bottom wall 101 and the side wall 102. The metal cup 20 avoids the coil pin 13. A spacer 30 is disposed between the metal cup 20 and the coil pin 13 and protrudes from the rim of the metal cup 20.

[0128] The relay of this application uses a metal cup to separate the dynamic / static contact parts and the electromagnetic coil into independent cavities. The electromagnetic coil does not require high-temperature aging treatment, and the gases generated during subsequent use will not affect the cavity where the dynamic / static contact parts are located. The relay of this application uses a metal cup to avoid the electromagnetic coil pins, which can achieve sealing of the dynamic / static contact parts without affecting the lead-out of the electromagnetic coil pins and increasing the overall product size.

[0129] It is understandable that the various embodiments / implementations provided in this application can be combined with each other without causing any contradiction, and they will not be illustrated one by one here.

[0130] In the exemplary embodiments described above, the relays proposed in this application are described using an example of an electronically controlled device. Those skilled in the art will readily appreciate that various modifications, additions, substitutions, deletions, or other changes may be made to the specific embodiments to apply the designs of this application to other types of devices, and such modifications remain within the scope of the principles of the relays proposed in this application.

[0131] It should be noted that the relays shown in the drawings and described in this specification are only a few examples of the many types of relays that can employ the principles of the present application. It should be clearly understood that the principles of the present application are in no way limited to any details or any components of the relays shown in the drawings or described in this specification.

[0132] In the application examples, the terms "first", "second", and "third" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance; the term "plurality" refers to two or more, unless otherwise expressly defined. Terms such as "installed", "connected", "connected", and "fixed" should be understood in a broad sense. For example, "connected" can mean a fixed connection, a detachable connection, or an integral connection; "connected" can mean a direct connection or an indirect connection through an intermediate medium. For those skilled in the art, the specific meanings of the above terms in the application examples can be understood according to the specific circumstances.

[0133] In the description of the application embodiments, it should be understood that the terms "up", "down", "left", "right", "front", "back", "top", "bottom", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the application embodiments 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. Therefore, it cannot be understood as a limitation on the application embodiments.

[0134] Throughout this specification, terms such as "one embodiment," "some embodiments," and "specific embodiments" mean that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the claimed invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0135] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A relay, characterized in that: include: A magnetic conductor, the magnetic conductor having a bottom wall and side walls, an electromagnetic coil disposed in a space enclosed by the bottom wall and the side walls, the electromagnetic coil being provided with coil pins, the coil pins extending in a direction away from the bottom wall; A metal cup is provided at one end of the side wall of the magnetic conductor away from the bottom wall, a portion of the static contact and the movable contact piece are provided in the inner cavity of the metal cup, and the metal cup avoids the coil pin; A spacer is provided on the metal cup, located between the metal cup and the coil pin, and protruding from the cup mouth of the metal cup.

2. The relay according to claim 1, wherein: The orthographic projection of the metal cup on the upper surface of the bottom wall of the magnetic conductor does not overlap with the orthographic projection of the coil pin on the upper surface of the bottom wall.

3. The relay according to claim 1, wherein: The metal cup includes a cup wall and a cup bottom connected to the cup wall. The cross-section of the cup wall of the metal cup is a non-circular closed ring, thereby forming an escape space outside the cup wall. The escape space is located above the bottom wall of the magnetic conductor for the coil pin to extend.

4. The relay according to claim 3, characterized in that The bottom wall of the magnetic conductor is circular.

5. The relay according to claim 3, characterized in that The sum of the areas of the orthographic projections of the metal cup and the avoidance space on the upper surface of the bottom wall of the magnetizer is equal to the area of the upper surface of the bottom wall of the magnetizer.

6. The relay according to any one of claims 3 to 5, characterized in that: The cup wall includes a first section and a second section, the second section is connected to the first section and forms an inner cavity of the metal cup together with the first section, and the coil pin is located on a side of the second section away from the inner cavity of the metal cup.

7. The relay according to claim 6, characterized in that The first section is a curved surface, the second section is a curved surface, and the curvature radius of the second section is different from that of the first section.

8. The relay according to claim 6, characterized in that The first section is a curved surface, and the second section is a flat surface.

9. The relay according to claim 8, characterized in that The cup bottom includes a curved segment and a straight segment, wherein the curved segment and the straight segment are connected to form a D-shape. The curved segment is connected to the first segment, and the straight segment is connected to the second segment.

10. The relay according to any one of claims 7 to 8, characterized in that: The spacer includes a plate body, and both ends of the plate body have folded edges, and the folded edges are bent toward the metal cup. The folded edges are attached to the first section, and the plate body is attached to the second section.

11. The relay according to claim 1, wherein: The spacer includes a plate cover and a plate seat, the plate seat has a pin hole, the coil pin passes through the pin hole, the plate cover is connected to the plate seat, and covers a part of the cup mouth of the metal cup, and the plate seat is located between the metal cup and the coil pin.

12. The relay according to claim 11, wherein The inner cavity of the metal cup is provided with a support cover for supporting the static contact, the support cover is provided with a first groove, an auxiliary lead-out piece is provided in the first groove, the plate cover has a notch for avoiding the auxiliary lead-out piece and a convex strip for positioning the spacer, and the convex strip is positioned in the first groove.

13. The relay according to claim 11, wherein The plate seat has two second grooves, the two second grooves are arranged opposite to each other in the extension direction of the coil pins, and the pin hole communicates with the two second grooves.

14. The relay according to any one of claims 1 to 5, 7 to 9, and 11 to 13, characterized in that: The spacer is made of insulating material.

15. The relay according to any one of claims 1 to 5, 7 to 9, and 11 to 13, characterized in that: The metal cup comprises a cup wall and a cup bottom connected to the cup wall. The cup wall and the cup bottom of the metal cup are separately formed and then sealed and fixed together.

16. The relay according to any one of claims 1 to 5, 7 to 9, and 11 to 13, characterized in that: The metal cup comprises a cup wall and a cup bottom connected to the cup wall, and the cup wall and the cup bottom of the metal cup are integrally formed.

17. The relay according to any one of claims 1 to 5, 7 to 9, and 11 to 13, characterized in that: Also includes: The yoke iron plate is arranged between the magnetizer and the cup bottom of the metal cup, and is connected to the end of the side wall of the magnetizer away from the bottom wall.

18. The relay according to any one of claims 1 to 5, 7 to 9, and 11 to 13, characterized in that: Also includes: The metal cylinder has a cylinder wall and a cylinder bottom connected to the cylinder wall. The metal cylinder is arranged in a space surrounded by the electromagnetic coil and faces and is connected to the metal cup.

19. The relay according to any one of claims 1 to 5, 7 to 9, and 11 to 13, characterized in that: Also includes: 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 static contact and the support cover, and separates the static contact and the support cover.

20. The relay according to claim 19, wherein The thermal conductivity of the thermal insulation member is smaller than the thermal conductivity of the static contact.

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