Direct-acting relay
By designing lead-out mounting ends on the same side and lead-outs spaced apart in the direct-acting relay, combined with push rod connecting contact pieces, the problem of low electrical connection efficiency is solved, achieving efficient electrical connection and assembly.
Patent Information
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- XIAMEN HONGFA ELECTRIC POWER CONTROLS CO LTD
- Filing Date
- 2025-12-15
- Publication Date
- 2026-06-25
AI Technical Summary
Existing direct-acting relays have low electrical connection efficiency and low assembly efficiency.
Design a direct-acting relay where the mounting ends of the main lead, auxiliary lead, and coil lead of the lead-out section are all located outside the housing and on the same side. The mounting end of the main lead is spaced apart from the auxiliary lead and coil lead to increase creepage distance and electrical clearance. A push rod is used to connect the active contact and the auxiliary moving contact to reduce the size chain, improve verticality, and avoid tilting.
It improves the electrical connection efficiency between direct-acting relays and customer equipment, increases creepage distance and clearance, reduces insertion difficulty, and improves assembly efficiency.
Smart Images
Figure CN2025142385_25062026_PF_FP_ABST
Abstract
Description
Direct-acting relay
[0001] Related applications
[0002] This application claims priority to Chinese patent application No. 2024231297634, filed on December 18, 2024, entitled "Direct-acting Relay", the entire contents of which are incorporated herein by reference. Technical Field
[0003] This application relates to the field of relay technology, and in particular to a direct-acting relay. Background Technology
[0004] 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). It is often used in automatic control circuits, where relays play roles such as automatic adjustment, safety protection, and circuit switching.
[0005] A direct-acting relay is a type of relay that includes a magnetic circuit and a contact part. The magnetic circuit includes a coil and a moving iron core, while the contact part includes a main stationary contact, a driving contact, an auxiliary stationary contact, and an auxiliary moving contact. The coil is energized, driving the moving iron core to move the driving and auxiliary moving contacts, causing the driving contact to contact or separate from the main stationary contact, and the auxiliary moving contact to contact or separate from the auxiliary stationary contact. Typically, the main and auxiliary stationary contacts are connected by a lead-out structure, which is electrically connected to the customer equipment. However, common direct-acting relays suffer from low assembly efficiency. Summary of the Invention
[0006] Therefore, it is necessary to provide a direct-acting relay to facilitate electrical connection and cooperation between the direct-acting relay and the client equipment, thereby improving the efficiency of electrical connection.
[0007] A direct-acting relay, comprising:
[0008] A housing having a receiving cavity and a first side portion;
[0009] The magnetic circuit section is disposed within the accommodating cavity, and the magnetic circuit section includes a coil frame on which a coil is wound.
[0010] The push rod, driven by the magnetic circuit section, is capable of moving along its axial direction;
[0011] The contact portion, disposed within the accommodating cavity, includes an active contact piece, a main stationary contact, an auxiliary moving contact piece, and an auxiliary stationary contact. The active contact piece and the auxiliary moving contact piece can move synchronously with the push rod. Under the push of the push rod, the active contact piece can contact or separate from the main stationary contact, and the auxiliary moving contact piece can contact or separate from the auxiliary stationary contact.
[0012] The lead-out portion includes a main lead-out component, an auxiliary lead-out component, and a coil lead-out component. Each of the main lead-out component, the auxiliary lead-out component, and the coil lead-out component has a connecting end and a mounting end. The connecting end is located inside the accommodating cavity, and the mounting end is located outside the housing. The connecting end of the main lead-out component is connected to the main stationary contact, the connecting end of the auxiliary lead-out component is connected to the auxiliary stationary contact, and the connecting end of the coil lead-out component is connected to the coil. The mounting ends of the main lead-out component, the auxiliary lead-out component, and the coil lead-out component are all located on the side of the first side facing away from the accommodating cavity.
[0013] The aforementioned direct-acting relay has its main lead insertion end, auxiliary lead insertion end, and coil lead insertion end all located outside the housing and on the same side. This facilitates electrical connection and cooperation between the direct-acting relay and the client equipment, improving electrical connection efficiency.
[0014] In one embodiment, the direct-acting relay further includes a yoke plate and an insulating cover. The yoke plate is located at one end of the coil frame along the axial direction of the push rod. The yoke plate has a socket through which the push rod passes, allowing it to move axially within the socket. The insulating cover is located on the side of the yoke plate away from the coil frame. The mounting end of the main lead is located on the side of the yoke plate facing the insulating cover. The mounting ends of the auxiliary lead and the coil lead are spaced apart from the mounting end of the main lead in a first direction. Since the main contact structure connects to a high-voltage load and the auxiliary contact structure connects to a low-voltage load, the main contact structure carries high voltage, and the auxiliary contact structure carries low voltage. By placing the mounting end of the main lead on the side of the insulating cover away from the yoke plate, and by spaced apart from the mounting ends of the auxiliary lead and the coil lead in a first direction, a safe distance between the high and low voltage is ensured.
[0015] In one embodiment, the mounting end of the auxiliary lead is located on the side of the mounting end of the coil lead away from the mounting end of the main lead.
[0016] In one embodiment, the mounting end of the auxiliary lead is located between the mounting end of the main lead and the mounting end of the coil lead.
[0017] In one embodiment, the first side portion is provided with a first through hole, a second through hole, and a third through hole. All three through holes communicate with the accommodating cavity. The first, second, and third through holes are sequentially spaced apart along a first direction. The main lead is located in the first through hole, the coil lead is located in the second through hole, and the auxiliary lead is located in the third through hole. This arrangement, with the main lead, coil lead, and auxiliary lead spaced apart, increases the creepage distance and clearance between them.
[0018] In one embodiment, the first through hole and the third through hole are located at opposite ends of the first side along the first direction, and the second through hole is located at the middle of the first side along the first direction. This increases the creepage distance and clearance between the main lead, the coil lead, and the auxiliary lead.
[0019] In one embodiment, at least two of the first through holes, the second through holes, and the third through holes are provided. All the first through holes are spaced apart along a direction parallel to the second direction, all the second through holes are spaced apart along a direction parallel to the second direction, and all the third through holes are spaced apart along a direction parallel to the second direction. At least two of each of the main leads, coil leads, and auxiliary leads are provided. Each main lead is correspondingly disposed within each of the first through holes, each coil lead is correspondingly disposed within each of the second through holes, and each auxiliary lead is correspondingly disposed within each of the third through holes, so that the arrangement directions of all the main leads, all the coil leads, and all the auxiliary leads are parallel to each other. This further increases the creepage distance and clearance between the main leads, coil leads, and auxiliary leads.
[0020] In one embodiment, the mounting ends of the main lead, the coil lead, and the auxiliary lead are parallel to each other. This further increases the creepage distance and clearance between the main lead, the coil lead, and the auxiliary lead, while also improving the accuracy of insertion alignment and reducing insertion difficulty.
[0021] In one embodiment, the push rod has a first end and a second end, which are respectively the two ends of the push rod's axial direction. The first end is located outside the coil frame, and the second end is located inside the coil frame. The active contact is connected to the first end, the main stationary contact is located on the side of the active contact away from the second end, and the auxiliary moving contact is connected to the second end. The auxiliary stationary contact is located on the side of the auxiliary moving contact away from the first end, and the magnetic circuit portion is located between the main stationary contact and the auxiliary stationary contact. By connecting the auxiliary moving contact to the push rod, the size chain can be reduced, the perpendicularity can be improved, and the tilting of the active contact and the auxiliary moving contact can be avoided.
[0022] In one embodiment, the direct-acting relay further includes a mounting bracket disposed within the accommodating cavity. The mounting bracket is located on the side of the coil frame opposite to the active contact, and the auxiliary lead is fixedly connected to the mounting bracket. Thus, the mounting bracket provides an installation position for the auxiliary lead, facilitating its installation.
[0023] In one embodiment, the direct-acting relay further includes a metal cover disposed within the coil frame. The metal cover has a receiving cavity and a through hole. The receiving cavity communicates with the through hole. The moving iron core, the second end, and the auxiliary moving contact are all movably disposed within the receiving cavity. One end of the auxiliary stationary contact is disposed outside the metal cover, and the other end of the auxiliary stationary contact is disposed within the receiving cavity via the through hole.
[0024] In one embodiment, the through hole is located on one end face of the metal cover along the axial direction of the push rod and near the second end; the direct-acting relay further includes an insulating element, through which the auxiliary stationary contact is insulated from the metal cover. Thus, by providing the insulating element, direct conductivity between the auxiliary stationary contact and the metal cover can be avoided.
[0025] In one embodiment, the auxiliary stationary contact is provided with a limiting boss, which is located outside the metal cover. The insulating member is located between the metal cover and the limiting boss, and is fixedly connected to both the metal cover and the limiting boss. Thus, the limiting boss serves to limit the movement of the insulating member and also facilitates welding between the insulating member and the limiting boss.
[0026] In one embodiment, the main lead, the coil lead, and the auxiliary lead are all sheet-like. This facilitates plug-and-play connection with client devices.
[0027] In one embodiment, the auxiliary moving contact is an elastic sheet. When the auxiliary stationary contact contacts the auxiliary moving contact, the stationary contact presses against the moving contact, causing the moving contact to deform and generate elastic force. This increases the contact pressure between the stationary and auxiliary contact, allowing for better contact and ensuring a better electrical connection. Simultaneously, the elastic force of the moving contact provides a reaction force for separation between the stationary and auxiliary contact. Using an auxiliary moving contact eliminates the need for separate springs and moving contacts, reducing assembly complexity and improving efficiency.
[0028] In one embodiment, the magnetic circuit further includes a moving iron core, a stationary magnetic conductor, and an elastic reset member. The moving iron core is movably disposed within the inner hole and connected to the push rod. The stationary magnetic conductor is located on the side of the moving iron core away from the auxiliary stationary contact. One end of the elastic reset member is connected to the stationary magnetic conductor, and the other end is connected to the moving iron core. The elastic reset member is capable of extending and retracting along the axial direction of the push rod. Thus, when the coil is energized, the moving iron core moves away from the auxiliary stationary contact under the action of the magnetic field force, and the elastic reset member is gradually compressed. When the coil is de-energized, the moving iron core moves towards the auxiliary stationary contact under the restoring force of the elastic reset member to reset the moving iron core.
[0029] In one embodiment, at least two main stationary contacts and at least two auxiliary stationary contacts are provided. Under the push of the push rod, all the main stationary contacts contact or separate from the active contact piece, and all the auxiliary stationary contacts contact or separate from the auxiliary moving contact piece. Attached Figure Description
[0030] To more clearly illustrate the technical solutions in the embodiments of this application or the conventional technology, the drawings used in the description of the embodiments or the conventional technology will be briefly introduced below. Obviously, the drawings described below are only embodiments of this application. For those skilled in the art, other drawings can be obtained based on the disclosed drawings without creative effort.
[0031] Figure 1 is a schematic diagram of the structure of a direct-acting relay according to an embodiment of this application.
[0032] Figure 2 is a schematic diagram of the internal structure of the direct-acting relay shown in Figure 1.
[0033] Figure 3 is a schematic diagram of the internal structure of the direct-acting relay shown in Figure 2 from another perspective.
[0034] Figure 4 is a front view of a direct-acting relay according to an embodiment of this application with the auxiliary contact structure in the closed state.
[0035] Figure 5 is a cross-sectional view along AA in Figure 4.
[0036] Figure 6 is a magnified view of part A in Figure 5.
[0037] Figure 7 is a front view of the direct-acting relay shown in Figure 4 with the main contact structure in the closed state.
[0038] Figure 8 is a cross-sectional view along BB in Figure 7.
[0039] Figure 9 is a magnified view of part B in Figure 8.
[0040] Figure 10 is a schematic diagram of the magnetic circuit section and auxiliary stationary contact shown in Figure 7.
[0041] Figure 11 is an exploded view of the magnetic circuit section and auxiliary stationary contact shown in Figure 10.
[0042] Figure 12 is a front view of a direct-acting relay according to another embodiment of this application with the auxiliary contact structure in the closed state.
[0043] Figure 13 is a cross-sectional view along CC in Figure 12.
[0044] Figure 14 is a magnified view of part C in Figure 13.
[0045] Figure 15 is a front view of the direct-acting relay shown in Figure 12 with the main contact structure in the closed state.
[0046] Figure 16 is a cross-sectional view along DD in Figure 15.
[0047] Figure 17 is a magnified view of part D in Figure 16.
[0048] Figure 18 is a schematic diagram of the magnetic circuit section and auxiliary stationary contact shown in Figure 15.
[0049] Figure 19 is an exploded view of the magnetic circuit section and auxiliary stationary contact shown in Figure 18.
[0050] Reference numerals in the attached figures: 10. Outer shell; 11. Cover; 111. Receiving cavity; 12. Side cover; 121. First side; 1211. First through hole; 1212. Second through hole; 1213. Third through hole; 20. Magnetic circuit part; 21. Coil frame; 211. Inner hole; 22. Moving iron core; 221. Groove; 24. Stationary iron core; 25. Elastic reset element; 26. Coil; 27. Yoke plate; 30. Contact part; 31. Active contact piece; 32. Main stationary contact; 33. Auxiliary moving contact piece; 331. First elastic arm; 3312. First through hole; 332. Second elastic arm; 333. Cover; 3331. Hollow cavity; 3332. Third opening; 3333. Fourth opening; 334. Flange; 34. Auxiliary stationary contact; 341. Limiting element 35. Boss; 351. Third through hole; 36. Fixing component; 361. Fourth through hole; 40. Lead-out part; 41. Main lead-out component; 42. Auxiliary lead-out component; 421. Connecting hole; 43. Coil lead-out component; 44. Connecting end; 45. Mounting end; 46. Fixing bracket; 461. Slot; 462. Fourth through hole; 47. Metal part; 471. Fifth through hole; 48. Insulating component; 481. Mounting hole; 50. Push rod; 51. First end; 52. Second end; 521. First stepped surface; 522. Second stepped surface; 523. Third stepped surface; 524. Fourth stepped surface; 53. Gasket; 60. Metal cover; 61. Receiving cavity; 62. Second opening; 63. Through hole; 70. Insulating cover; 80. Frame piece. Detailed Implementation
[0051] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.
[0052] Referring to Figure 5, a direct-acting relay provided in an embodiment of this application includes a housing 10, a magnetic circuit portion 20, a contact portion 30, and a push rod 50. The housing 10 has a receiving cavity 111, in which the magnetic circuit portion 20, the contact portion 30, and the push rod 50 are all disposed.
[0053] Referring to Figure 5, the magnetic circuit section 20 includes a coil frame 21 and a moving iron core 22. A coil 26 is wound around the coil frame 21, and the coil frame 21 has an inner hole 211. The moving iron core 22 is movably disposed within the inner hole 211. The push rod 50 is connected to the moving iron core 22. When the coil 26 is energized, the moving iron core 22 can move within the inner hole 211 under the action of the magnetic field force, thereby driving the push rod 50 to move along its axial direction.
[0054] Optionally, referring to Figure 5, the inner hole 211 of the coil frame 21 is provided with a metal cover 60, the metal cover 60 is provided with a receiving cavity 61, and the moving iron core 22 is movably disposed in the receiving cavity 61.
[0055] Of course, if the product does not require sealing, the metal cover 60 may not be required.
[0056] Referring to Figure 5, the contact portion 30 includes an active contact 31, a main stationary contact 32, an auxiliary moving contact 33, and an auxiliary stationary contact 34. The main stationary contact 32 and the active contact 31 cooperate to form the main contact structure, and the auxiliary stationary contact 34 and the auxiliary moving contact 33 cooperate to form the auxiliary contact structure.
[0057] Optionally, both the active contact 31 and the auxiliary moving contact 33 are connected to the push rod 50; or, the active contact 31 is connected to the push rod 50, and the auxiliary moving contact 33 is connected to the moving iron core 22, so that the active contact 31 and the auxiliary moving contact 33 can move synchronously with the push rod 50. Under the push of the push rod 50, the main stationary contact 32 contacts or separates from the active contact 31, and the auxiliary stationary contact 34 contacts or separates from the auxiliary moving contact 33.
[0058] By connecting the auxiliary movable contact 33 to the push rod 50, the size chain can be reduced, the verticality can be improved, and the tilting of the auxiliary movable contact 33 can be avoided. In addition, referring to Figure 6, the end face of the moving iron core 22 near the auxiliary stationary contact 34 is provided with a groove 221. In this embodiment, the auxiliary movable contact 33 is connected to the push rod 50. When glue is applied at the groove 221 to fix the push rod 50 and the moving iron core 22, the auxiliary movable contact 33 will not block the groove 221, which facilitates the application of glue at the groove 221.
[0059] It should be noted that the number of main stationary contacts 32 and auxiliary stationary contacts 34 can be set according to actual needs. Specifically, there are at least two main stationary contacts 32 and at least two auxiliary stationary contacts 34. Under the push of the push rod 50, all the main stationary contacts 32 are in contact with or separated from the active contact piece 31, and all the auxiliary stationary contacts 34 are in contact with or separated from the auxiliary moving contact piece 33.
[0060] In this embodiment, referring to Figure 5, there are two main stationary contacts 32 and two auxiliary stationary contacts 34.
[0061] Furthermore, the main stationary contact 32 is provided with a main stationary contact point, and the active contact piece 31 is provided with an active contact point. The main stationary contact 32 and the main stationary contact point are either integrally formed or separately formed and connected; the active contact piece 31 and the active contact point are either integrally formed or separately formed and connected.
[0062] Furthermore, the auxiliary stationary contact 34 is provided with an auxiliary stationary contact point, and the auxiliary moving contact piece 33 is provided with an auxiliary moving contact point. The auxiliary stationary contact 34 and the auxiliary stationary contact point are either integrally formed or separately formed and connected; the auxiliary moving contact piece 33 and the auxiliary moving contact point are either integrally formed or separately formed and connected.
[0063] Driven by the push rod 50, the main stationary contact and the active contact come into contact or separate, and the auxiliary stationary contact and the auxiliary moving contact come into contact or separate. Referring to Figure 5, when the coil 26 is not energized, the main stationary contact 32 separates from the active contact piece 31, that is, the main contact structure is in an open state, while the auxiliary stationary contact 34 comes into contact with the auxiliary moving contact piece 33, that is, the auxiliary contact structure is in a conductive state. Referring to Figure 8, when the coil 26 is energized, under the action of the magnetic field, the moving iron core 22 moves away from the auxiliary stationary contact 34, thereby driving the push rod 50 and the active contact piece 31 and the auxiliary moving contact piece 33 on it to move away from the auxiliary stationary contact 34, so that the main stationary contact 32 comes into contact with the active contact piece 31, realizing the conduction of the main contact structure, while the auxiliary stationary contact 34 separates from the auxiliary moving contact piece 33, realizing the disconnection of the auxiliary contact structure.
[0064] In one embodiment, referring to FIG1, the housing 10 has a first side portion 121. Taking FIG1 as an example, the first side portion 121 is the left side of the housing 10.
[0065] Further, referring to Figure 1, the outer casing 10 includes a cover 11 and a side cover 12. The cover 11 has a receiving cavity 111 and a first opening communicating with the receiving cavity 111, and the side cover 12 is disposed in the first opening. The side cover 12 is a first side portion 121.
[0066] In one embodiment, referring to Figures 1, 2, and 3, the direct-acting relay further includes a lead-out portion 40. The lead-out portion 40 includes a main lead-out member 41, an auxiliary lead-out member 42, and a coil lead-out member 43. Each of the main lead-out member 41, auxiliary lead-out member 42, and coil lead-out member 43 has a connection end 44 and a mounting end 45. The connection end 44 is located within the receiving cavity 111, and the mounting end 45 is located outside the housing 10. The connection end 44 of the main lead-out member 41 is connected to the main stationary contact 32, the connection end 44 of the auxiliary lead-out member 42 is connected to the auxiliary stationary contact 34, and the connection end 44 of the coil lead-out member 43 is connected to the coil 26. The mounting ends 45 of the main lead-out member 41, the auxiliary lead-out member 42, and the coil lead-out member 43 are all located on the side of the first side portion 121 facing away from the magnetic circuit portion 20 and the contact portion 30.
[0067] Since the insertion end 45 of the main lead 41, the insertion end 45 of the auxiliary lead 42, and the insertion end 45 of the coil lead 43 are all located outside the housing 10 and on the same side, it is convenient for the direct-acting relay to be electrically connected and cooperated with the client equipment, thereby improving the electrical connection efficiency.
[0068] In one embodiment, referring to FIG2, the main lead 41, the auxiliary lead 42, and the coil lead 43 are all sheet-like structures.
[0069] Of course, in other embodiments, the main lead 41, the auxiliary lead 42 and the coil lead 43 may also have other structures, and are not limited thereto.
[0070] In one embodiment, referring to FIG5, the direct-acting relay further includes a yoke plate 27 and an insulating cover 70. The yoke plate 27 is disposed at one end of the coil frame 21 along the axial direction of the push rod 50. The yoke plate 27 has a socket through which the push rod 50 passes and can move axially within the socket. The insulating cover 70 is disposed on the side of the yoke plate 27 opposite to the coil frame 21 and is spaced apart from the yoke plate 27. A frame plate 80 is provided between the insulating cover 70 and the yoke plate 27, and the insulating cover 70 is connected to the yoke plate 27 through the frame plate 80.
[0071] Since the main contact structure connects to the high-voltage load and the auxiliary contact structure connects to the low-voltage load, the main contact structure carries the high voltage, and the auxiliary contact structure carries the low voltage. Therefore, in this embodiment, the mounting end 45 of the main lead-out member 41 is located on the side of the yoke plate 27 facing the insulating cover 70, and the mounting ends 45 of the auxiliary lead-out member 42 and the coil lead-out member 43 are spaced apart from the mounting end 45 of the main lead-out member 41 along a first direction. This first direction is parallel to the axial direction of the push rod 50 and is represented by S1. This ensures a safe distance between the high voltage and low voltage.
[0072] In one embodiment, referring to FIG5, the mounting end 45 of the auxiliary lead 42 is located on the side of the mounting end 45 of the coil lead 43 facing away from the mounting end 45 of the main lead 41. It can be understood that, in the first direction, the mounting end 45 of the coil lead 43 is located between the mounting end 45 of the main lead 41 and the mounting end 45 of the auxiliary lead 42.
[0073] Of course, in other embodiments, the mounting end 45 of the auxiliary lead 42 is located between the mounting end 45 of the main lead 41 and the mounting end 45 of the coil lead 43. It can be understood that, in the first direction, the mounting end 45 of the auxiliary lead 42 is located between the mounting end 45 of the main lead 41 and the mounting end 45 of the coil lead 43.
[0074] In one embodiment, referring to Figures 5 and 8, the push rod 50 has a first end 51 and a second end 52, which are the two ends of the push rod 50 along its axial direction, respectively. The second end 52 is movably disposed within the receiving cavity 61. The metal cover 60 also has a second opening 62, through which the first end 51 is disposed outside the metal cover 60.
[0075] Furthermore, referring to Figures 5 and 8, the active contact 31 is connected to the first end 51 via a contact bracket and is housed within the insulating cover 70. The auxiliary moving contact 33 is connected to the second end 52. Thus, connecting the active contact 31 and the auxiliary moving contact 33 to the push rod 50 reduces the size chain, improves verticality, and prevents the active contact 31 and the auxiliary moving contact 33 from tilting.
[0076] The main stationary contact 32 is located on the side of the active contact 31 opposite to the second end 52. Specifically, the main stationary contact 32 is located on the side of the insulating cover 70 opposite to the yoke plate 27.
[0077] The auxiliary stationary contact 34 is located on the side of the auxiliary moving contact 33 opposite to the first end 51. The auxiliary stationary contact 34 is at least partially located within the receiving cavity 61. Specifically, the metal cover 60 also has a through hole 63 communicating with the receiving cavity 61. One end of the auxiliary stationary contact 34 is located within the receiving cavity 61, and the other end of the auxiliary stationary contact 34 is located outside the metal cover 60 through the through hole 63. The magnetic circuit portion 20 is located between the main stationary contact 32 and the auxiliary stationary contact 34.
[0078] Understandably, taking Figure 5 as an example, the main stationary contact 32 and the active contact 31 are located in the upper space of the housing 10, the magnetic circuit section 20 is located in the middle space of the housing 10, and the auxiliary stationary contact 34 and the auxiliary moving contact 33 are located in the lower space of the housing 10. That is, the main contact structure and the auxiliary contact structure are respectively located in the upper and lower parts of the direct-acting relay. The push rod 50 moves up and down to drive the active contact 31 and the auxiliary moving contact 33 to move, so that the main contact structure and the auxiliary contact structure are connected or disconnected. In this way, the space utilization rate can be improved, making the direct-acting relay structure compact, while increasing the creepage distance and electrical clearance between the main contact structure, the auxiliary contact structure and the coil 26.
[0079] In one embodiment, referring to FIG5, the magnetic circuit portion 20 further includes a stationary magnetic conductor and an elastic reset member 25. The stationary magnetic conductor is disposed on the side of the moving iron core 22 opposite to the auxiliary stationary contact 34. The elastic reset member 25 is disposed inside the metal cover 60, one end of the elastic reset member 25 is connected to the stationary magnetic conductor, and the other end of the elastic reset member 25 is connected to the moving iron core 22. The elastic reset member 25 is capable of extending and retracting along the axial direction of the push rod 50. Optionally, the elastic reset member 25 is a reset spring, which is sleeved on the push rod 50.
[0080] When coil 26 is energized, the moving iron core 22 moves away from the auxiliary stationary contact 34 under the action of the magnetic field force, and the elastic reset member 25 is gradually compressed. When coil 26 is de-energized, the moving iron core 22 moves towards the auxiliary stationary contact 34 under the restoring force of the elastic reset member 25 to reset the moving iron core 22.
[0081] Optionally, the stationary magnetic conductor is a yoke plate 27, which cooperates with the moving iron core 22 to achieve magnetic conduction.
[0082] Optionally, the static magnetic conductor is a static iron core 24, which is located inside the metal cover 60 and fixedly connected to the yoke plate 27. The static iron core 24 cooperates with the moving iron core 22 to achieve magnetic conduction.
[0083] In one embodiment, referring to FIG1, the first side portion 121 is provided with a first through hole 1211, a second through hole 1212, and a third through hole 1213. The first through hole 1211, the second through hole 1212, and the third through hole 1213 all communicate with the receiving cavity 111, and are arranged sequentially at intervals along a first direction. A main lead 41 is disposed in the first through hole 1211, a coil lead 43 is disposed in the second through hole 1212, and an auxiliary lead 42 is disposed in the third through hole 1213. This arrangement, with the main lead 41, the coil lead 43, and the auxiliary lead 42 spaced apart, increases the creepage distance and clearance between them.
[0084] In one embodiment, referring to FIG1, the first through hole 1211 and the third through hole 1213 are respectively located at the two ends of the first side portion 121 along the first direction, and the second through hole 1212 is located in the middle of the first side portion 121 along the first direction. Taking FIG1 as an example, the first through hole 1211 is provided in the upper part of the first side portion 121, the second through hole 1212 is provided in the middle of the first side portion 121, and the third through hole 1213 is provided in the lower part of the first side portion 121.
[0085] During installation, the main lead 41 is located within the first through hole 1211, that is, the main lead 41 is located at the upper part of the first side portion 121, so that the main lead 41 corresponds to the main stationary contact 32, facilitating the connection between the main lead 41 and the main stationary contact 32 and improving the convenience of connection. During installation, the coil lead 43 is located within the second through hole 1212, that is, the coil lead 43 is located at the middle part of the first side portion 121, so that the coil lead 43 corresponds to the coil 26, facilitating the connection between the coil lead 43 and the coil 26 and improving the convenience of connection. During installation, the auxiliary lead 42 is located within the third through hole 1213, that is, the auxiliary lead 42 is located at the lower part of the first side portion 121, so that the auxiliary lead 42 corresponds to the auxiliary stationary contact 34, facilitating the connection between the auxiliary lead 42 and the auxiliary stationary contact 34 and improving the convenience of connection.
[0086] In addition, the main lead 41 is located at the upper part of the first side 121, the coil lead 43 is located at the middle part of the first side 121, and the auxiliary lead 42 is located at the lower part of the first side 121. This increases the creepage distance and clearance between the main lead 41, the coil lead 43 and the auxiliary lead 42.
[0087] In one embodiment, referring to FIG1, at least two first through holes 1211, second through holes 1212, and third through holes 1213 are provided. All the first through holes 1211 are arranged at intervals along a direction parallel to the second direction, all the second through holes 1212 are arranged at intervals along a direction parallel to the second direction, and all the third through holes 1213 are arranged at intervals along a direction parallel to the second direction. The first direction is perpendicular to the second direction, and the second direction is denoted by S2.
[0088] It is understandable that, referring to Figure 1, the arrangement directions of all the first through holes 1211, all the second through holes 1212, and all the third through holes 1213 are parallel to each other.
[0089] Furthermore, referring to Figure 1, at least two of each of the main leads 41, coil leads 43, and auxiliary leads 42 are provided. All the main leads 41 are respectively disposed in all the first through holes 1211, all the coil leads 43 are respectively disposed in all the second through holes 1212, and all the auxiliary leads 42 are respectively disposed in all the third through holes 1213. This ensures that the arrangement directions of all the main leads 41, all the coil leads 43, and all the auxiliary leads 42 are parallel. This further increases the creepage distance and clearance between the main leads 41, coil leads 43, and auxiliary leads 42.
[0090] In one embodiment, referring to Figures 4, 7, 12, and 15, the mounting ends 45 of the main lead 41, the coil lead 43, and the auxiliary lead 42 are parallel to each other. This further increases the creepage distance and clearance between the main lead 41, the coil lead 43, and the auxiliary lead 42. Simultaneously, it improves the accuracy of insertion alignment and reduces insertion difficulty.
[0091] It is understandable that the parallelism of the mounting end 45 of the main lead 41, the mounting end 45 of the coil lead 43, and the mounting end 45 of the auxiliary lead 42 means that the width direction of the mounting end 45 of the main lead 41, the mounting end 45 of the coil lead 43, and the mounting end 45 of the auxiliary lead 42 is parallel to the second direction, and the thickness direction of the main lead 41, the thickness direction of the coil lead 43, and the thickness direction of the auxiliary lead 42 are consistent and parallel to the first direction.
[0092] Of course, in other embodiments, the mounting end 45 of the main lead 41, the mounting end 45 of the coil lead 43, and the mounting end 45 of the auxiliary lead 42 may not be parallel, as long as the arrangement direction of all the main leads 41, the arrangement direction of all the coil leads 43, and the arrangement direction of all the auxiliary leads 42 are parallel.
[0093] In one embodiment, referring to Figures 2 and 5, the direct-acting relay further includes a mounting bracket 46. The mounting bracket 46 is disposed within the receiving cavity 111 and located on the side of the coil holder 21 opposite to the active contact 31. Taking Figure 5 as an example, the mounting bracket 46 is located below the coil holder 21. An auxiliary lead-out member 42 is fixedly connected to the mounting bracket 46. Thus, the mounting bracket 46 provides a fixed position for the auxiliary lead-out member 42.
[0094] Optionally, referring to Figures 11 and 19, the auxiliary lead-out member 42 is inserted into the mounting bracket 46. Specifically, the mounting bracket 46 has a slot 461, which is recessed towards the push rod 50. The connecting end 44 of the auxiliary lead-out member 42 is located inside the slot 461, and the mounting end 45 of the auxiliary lead-out member 42 is located outside the slot 461. During installation, the connecting end 44 of the auxiliary lead-out member 42 is inserted into the slot 461, thus allowing the auxiliary lead-out member 42 to be installed on the mounting bracket 46, facilitating the installation of the auxiliary lead-out member 42 and improving installation efficiency.
[0095] Further, referring to Figures 11 and 19, the bottom of slot 461 is the side of the fixing bracket 46 near the auxiliary stationary contact 34. The bottom of slot 461 has a fourth through hole 462, which communicates with slot 461. The auxiliary stationary contact 34 is connected to the connection end 44 of the auxiliary lead-out member 42 via the fourth through hole 462. This allows for the connection between the auxiliary stationary contact 34 and the auxiliary lead-out member 42.
[0096] Of course, in other embodiments, the auxiliary lead-out member 42 may also be integrally injection molded with the fixing frame 46.
[0097] In one embodiment, referring to Figures 3, 11, and 19, the connecting end 44 of the auxiliary lead-out member 42 is provided with a connecting hole 421, and one end of the auxiliary stationary contact 34 is disposed within the connecting hole 421 and fixedly connected to the hole wall of the connecting hole 421. Optionally, the auxiliary stationary contact 34 is snapped or welded to the hole wall of the connecting hole 421. In this way, no additional parts are required, reducing the assembly of parts and improving assembly efficiency.
[0098] In one embodiment, referring to Figures 10 and 18, the auxiliary switch assembly further includes an insulator 48. The auxiliary stationary contact 34 is insulated from the metal cover 60 via the insulator 48. Thus, the insulator 48 provides insulation, preventing direct conductivity between the auxiliary stationary contact 34 and the metal cover 60.
[0099] Furthermore, referring to Figures 9 and 11, the auxiliary stationary contact 34 is provided with a limiting boss 341. The limiting boss 341 is located outside the metal cover 60, and the insulating member 48 is located between the metal cover 60 and the limiting boss 341. The insulating member 48 is fixedly connected to the metal cover 60 and the limiting boss 341. In this way, the limiting boss 341 serves to limit the insulating member 48, and also facilitates welding of the insulating member 48 to the limiting boss 341.
[0100] In one embodiment, referring to Figures 6 and 9, the insulating element 48 is a ceramic element. The ceramic element is disposed outside the metal cover 60 and located on the side of the second end 52 opposite to the first end 51. The ceramic element has a mounting hole 481 communicating with the through hole 63, and the auxiliary stationary contact 34 is disposed within the mounting hole 481. Thus, the ceramic element provides a mounting position for the auxiliary stationary contact 34, facilitating its installation, while also serving as insulation.
[0101] In this embodiment, referring to Figures 6 and 9, there are two mounting holes 481, and the two auxiliary stationary contacts 34 are respectively provided in the two mounting holes 481.
[0102] Further, referring to Figures 1, 6, and 8, the auxiliary switch assembly also includes a metal component 47. The metal component 47 is disposed between the metal cover 60 and the ceramic component, and the metal component 47 and the ceramic component together form an integral cover over the through hole 63. The metal component 47 is welded to the metal cover 60. The metal component 47 has an axially extending fifth through hole 471, which communicates with the mounting hole 481 and the through hole 63. One end of the auxiliary stationary contact 34 is located outside the metal cover 60, and the other end of the auxiliary stationary contact 34 is located within the receiving cavity 61 via the mounting hole 481, the fifth through hole 471, and the through hole 63. Thus, the auxiliary stationary contact 34 is fixed to the metal cover 60 by welding. Furthermore, the integral structure formed by the metal component 47 and the ceramic component can seal the through hole 63, thereby sealing the metal cover 60.
[0103] In another embodiment, the insulating member 48 includes a glass body. The glass body is disposed within the through-hole 63 to cover the through-hole 63, and the auxiliary stationary contact 34 is connected to the metal cover 60 via the glass body. It is understood that the auxiliary stationary contact 34, the glass body, and the metal cover 60 are sintered together within the through-hole 63; that is, one end of the auxiliary stationary contact 34 is located outside the receiving cavity 61, and the other end of the auxiliary stationary contact 34 is located outside the receiving cavity 61. This simplifies the components and improves assembly efficiency. Furthermore, the glass body can seal the through-hole 63 to seal the metal cover 60.
[0104] In one embodiment, the auxiliary moving contact 33 is an elastic element. When the auxiliary stationary contact 34 contacts the auxiliary moving contact 33, the auxiliary stationary contact 34 presses against the auxiliary moving contact 33, causing the auxiliary moving contact 33 to deform and generate elastic force. This increases the contact pressure between the auxiliary moving contact 33 and the auxiliary stationary contact 34, allowing the auxiliary stationary contact 34 to make better contact with the auxiliary moving contact 33 and ensuring a better electrical connection between them. Simultaneously, the elastic force of the auxiliary moving contact 33 provides a reaction force for the separation of the auxiliary stationary contact 34 and the auxiliary moving contact 33. Because the auxiliary moving contact 33 is elastic, it also acts as a buffer during the contact process with the auxiliary stationary contact 34, preventing damage to both the auxiliary stationary contact 34 and the auxiliary moving contact 33 and extending their service life. The auxiliary contact structure can be switched on and off by using the auxiliary moving contact piece 33, eliminating the need for separate springs and moving contact pieces, thus reducing the number of parts and improving assembly efficiency.
[0105] In one embodiment, referring to Figures 5, 6, 8, 9, and 11, the auxiliary movable contact 33 includes a first elastic arm 331 and a second elastic arm 332. The second elastic arm 332 is disposed on the side of the first elastic arm 331 facing the auxiliary stationary contact 34. The first elastic arm 331 has a first through hole 3312, through which it is sleeved on the second end 52 of the push rod 50. The second elastic arm 332 has a second through hole, through which it is sleeved on the second end 52 of the push rod 50.
[0106] It should be noted that the first elastic arm 331 and the second elastic arm 332 are sleeved on the second end 52 of the push rod 50, rather than fixed to the second end 52 of the push rod 50. This can prevent the auxiliary moving contact piece 33 from breaking due to excessive stress.
[0107] Driven by the push rod 50, the auxiliary moving contact 33 moves towards the auxiliary stationary contact 34, and the auxiliary stationary contact 34 comes into contact with the second elastic arm 332. During the contact process, the second elastic arm 332 deforms under the pressure of the auxiliary stationary contact 34, generating elastic force to increase the contact pressure between the auxiliary stationary contact 34 and the auxiliary moving contact 33. This allows the auxiliary stationary contact 34 to make better contact with the second elastic arm 332, ensuring a better electrical connection between the auxiliary stationary contact 34 and the auxiliary moving contact 33. At the same time, the elastic force of the second elastic arm 332 provides a reaction force for the separation of the auxiliary stationary contact 34 and the auxiliary moving contact 33.
[0108] Optionally, referring to Figure 11, the first elastic arm 331 and the second elastic arm 332 are arranged at an angle, and the first elastic arm 331 and the second elastic arm 332 are connected to form a V-shape. Specifically, the V-shaped auxiliary moving contact piece 33 can be obtained by bending the spring sheet, which simplifies the processing and improves the processing efficiency.
[0109] In this embodiment, referring to Figure 6, the first elastic arm 331 is perpendicular to the axis of the push rod 50, that is, the first elastic arm 331 is horizontally arranged. One end of the second elastic arm 332 in the longitudinal direction is connected to the first elastic arm 331, and the other end of the second elastic arm 332 in the longitudinal direction is inclined towards the auxiliary stationary contact 34.
[0110] Of course, in other embodiments, the auxiliary movable contact 33 is U-shaped. Alternatively, the auxiliary movable contact 33 is W-shaped.
[0111] Furthermore, the connection between the first elastic arm 331 and the second elastic arm 332 adopts a rounded transition. This increases the toughness and fatigue resistance of the auxiliary moving contact 33.
[0112] In one embodiment, referring to Figure 11, the second through hole is a strip-shaped hole extending along the length of the second elastic arm 332, with the second end 52 of the push rod 50 disposed within the strip-shaped hole. Since the second elastic arm 332 is inclined from the first elastic arm 331 towards the auxiliary stationary contact 34, its movement is not linear when the auxiliary stationary contact 34 contacts the auxiliary moving contact 33. Therefore, the second through hole is designed as a strip-shaped hole, which allows for clearance of the movement of the auxiliary moving contact 33, preventing interference with the movement of the second elastic arm 332. Furthermore, the strip-shaped hole, in conjunction with the push rod 50, provides a guiding function, ensuring the directional movement of the second elastic arm 332 and guaranteeing the stability of the contact between the auxiliary stationary contact 34 and the auxiliary moving contact 33.
[0113] In one embodiment, referring to Figures 6 and 9, the second end 52 is provided with a first limiting structure and a second limiting structure. The first limiting structure is provided on the side of the auxiliary moving contact 33 away from the auxiliary stationary contact 34, and the second limiting structure is provided on the side of the auxiliary moving contact 33 close to the auxiliary stationary contact 34. The first limiting structure and the second limiting structure cooperate to make the auxiliary moving contact 33 located at the second end 52. Since the auxiliary movable contact 33 is sleeved on the second end 52 of the push rod 50, a first limiting structure and a second limiting structure are provided on the second end 52 of the push rod 50. The auxiliary movable contact 33 is located between the first limiting structure and the second limiting structure. The first limiting structure restricts the movement of the auxiliary movable contact 33 away from the auxiliary stationary contact 34, and the second limiting structure restricts the movement of the auxiliary movable contact 33 towards the auxiliary stationary contact 34. In this way, with the cooperation of the first limiting structure and the second limiting structure, the auxiliary movable contact 33 is limited to the second end 52 of the push rod 50, ensuring that the auxiliary movable contact 33 can contact the auxiliary stationary contact 34, while preventing the auxiliary movable contact 33 from separating from the push rod 50.
[0114] In one embodiment, referring to Figures 6 and 9, the first limiting structure includes a first limiting step. The first limiting step has a first step surface 521 and a second step surface 522. The first step surface 521 extends axially along the push rod 50, and the second step surface 522 faces the auxiliary stationary contact 34. The first step surface 521 and the second step surface 522 are perpendicular. The wall of the first through hole 3312 is adapted to the first step surface 521, and the side of the first elastic arm 331 facing away from the second elastic arm 332 abuts against the second step surface 522. During installation, the auxiliary moving contact 33 is sleeved on the first step surface 521, which provides an installation position for the auxiliary moving contact 33, facilitating its installation. Meanwhile, the side of the first elastic arm 331 away from the second elastic arm 332 abuts against the second step surface 522. The second step surface 522 can play a limiting role. The second step surface 522 can restrict the first elastic arm 331 from moving away from the auxiliary stationary contact 34 relative to the push rod 50, ensuring the reliability of the installation of the auxiliary moving contact 33.
[0115] Furthermore, referring to Figures 6 and 9, the direct-acting relay also includes a gasket 53, the diameter of which is larger than the diameter of the second stepped surface 522. The gasket 53 is disposed on the first limiting step; specifically, the gasket 53 is located between the auxiliary moving contact 33 and the second stepped surface 522, and abuts against the first elastic arm 331 and the second stepped surface 522. The hole in the middle of the gasket 53 is adapted to the first stepped surface 521. This increases the mating area between the first elastic arm 331 and the second stepped surface 522.
[0116] In one embodiment, referring to Figures 6 and 9, the second limiting structure includes a limiting member 35. The limiting member 35 has a third through hole 351, and is sleeved onto the second end 52 of the push rod 50 through the third through hole 351, thus the limiting member 35 is fixedly connected to the push rod 50. In this way, the limiting member 35 restricts the movement of the auxiliary moving contact 33 toward the auxiliary stationary contact 34, preventing the auxiliary moving contact 33 from disengaging from the second end 52 of the push rod 50. Furthermore, under the action of the limiting member 35, the auxiliary moving contact 33 is given a certain pre-compression force.
[0117] It should be noted that there are several ways to fix the limiting member 35 and the push rod 50. Optionally, the wall of the third through hole 351 is engaged with the push rod 50; or, the wall of the third through hole 351 is welded to the push rod 50; or, the limiting member 35 is riveted to the push rod 50.
[0118] In one embodiment, referring to Figures 6 and 9, the second end 52 is further provided with a second limiting step. The second limiting step has a third step surface 523 and a fourth step surface 524. The third step surface 523 extends axially along the push rod 50, and the fourth step surface 524 faces the auxiliary stationary contact 34, and is perpendicular to the fourth step surface 524. The wall of the third through hole 351 is adapted to the third step surface 523, and the side of the limiting member 35 away from the auxiliary stationary contact 34 abuts against the fourth step surface 524. During installation, the limiting member 35 is sleeved on the third step surface 523, which provides an installation position for the limiting member 35, facilitating its installation. At the same time, the side of the limiting member 35 away from the auxiliary stationary contact 34 abuts against the fourth step surface 524, which acts as a limit to prevent the limiting member 35 from moving away from the auxiliary stationary contact 34 relative to the push rod 50, ensuring the reliability of the limiting member 35's installation.
[0119] In another embodiment, referring to Figures 13, 16, and 19, the auxiliary movable contact 33 includes a cover 333 disposed at the second end 52. Under the push of the push rod 50, the auxiliary stationary contact 34 contacts or separates from the auxiliary movable contact 33.
[0120] When the auxiliary stationary contact 34 contacts the auxiliary moving contact 33, the stationary contact 34 presses against the moving contact 33, causing the moving contact 33 to deform and generate elasticity. This increases the contact pressure between the moving contact 33 and the stationary contact 34, allowing for better contact and ensuring a better electrical connection. Simultaneously, the elasticity of the moving contact 33 provides a reaction force for separation between the stationary and moving contacts. Because the moving contact 33 is elastic, it also acts as a buffer during contact with the stationary contact 34, preventing damage to both and extending their service life. Using the moving contact 33 eliminates the need for separate springs and moving contacts, reducing assembly complexity and improving efficiency. Since the auxiliary moving contact 33 includes a cover 333, that is, the auxiliary moving contact 33 is a cover, the entire circle of the cover-shaped auxiliary moving contact 33 can contact the auxiliary stationary contact 34. Even if there is an assembly error in the auxiliary moving contact 33, the reliability of the contact between the auxiliary stationary contact 34 and the auxiliary moving contact 33 can be guaranteed.
[0121] In one embodiment, referring to Figures 14 and 17, the cover 333 has a hollow cavity 3331 and a third opening 3332 communicating with the hollow cavity 3331. The cover 333 is fitted onto the second end 52 through the third opening 3332. This facilitates the installation of the auxiliary movable contact piece 33 and improves installation efficiency.
[0122] In one embodiment, referring to Figures 14 and 17, the third opening 3332 is provided on the side of the cover 333 facing the first end 51.
[0123] Furthermore, the cover 333 is also provided with a fourth opening 3333 that communicates with the hollow cavity 3331. The fourth opening 3333 is located on the side of the cover 333 away from the first end 51. In this way, the fourth opening 3333 can make way for the push rod 50.
[0124] In one embodiment, referring to Figures 14 and 17, the auxiliary moving contact 33 further includes a flange 334. The flange 334 extends outward from the wall of the fourth opening 3333 toward the hollow cavity 3331, or extends inward from the wall of the fourth opening 3333 toward the hollow cavity 3331. Under the push of the push rod 50, the auxiliary stationary contact 34 contacts or separates from the flange 334. During contact, the flange 334 deforms under the pressure of the auxiliary stationary contact 34, generating elastic force to increase the contact pressure between the auxiliary stationary contact 34 and the auxiliary moving contact 33. This allows the auxiliary stationary contact 34 to better contact the flange 334, ensuring a better electrical connection between the auxiliary stationary contact 34 and the auxiliary moving contact 33. Simultaneously, the elastic force of the flange 334 provides a reaction force for the separation of the auxiliary stationary contact 34 and the auxiliary moving contact 33. In this way, any position of the flange 334 in the circumferential direction can contact the auxiliary stationary contact 34, and even if there is an assembly error in the auxiliary moving contact 33, the reliability of the contact between the auxiliary stationary contact 34 and the auxiliary moving contact 33 can be guaranteed.
[0125] Of course, in other embodiments, under the action of the push rod 50, the auxiliary stationary contact 34 contacts or separates from the inner wall of the cover 333 through the fourth opening 3333. In this way, the entire inner wall of the cover 333 can contact the auxiliary stationary contact 34, and even if there is an assembly error in the auxiliary moving contact piece 33, the reliability of the contact between the auxiliary stationary contact 34 and the auxiliary moving contact piece 33 can be guaranteed.
[0126] Furthermore, referring to Figure 14, the auxiliary stationary contact 34 contacts or separates from the side of the flange 334 near the housing 333. Since the housing 333 supports the side of the flange 334 near the housing 333, when the auxiliary stationary contact 34 contacts the auxiliary moving contact 33, the deformation of the side of the flange 334 near the housing 333 is moderate, ensuring a good electrical connection between the auxiliary stationary contacts 34 and the auxiliary stationary contact 33.
[0127] In one embodiment, referring to Figures 14 and 17, the cover 333 is hemispherical, and the hemispherical cover 333 is recessed along the axial direction of the push rod 50 in a direction away from the auxiliary stationary contact 34.
[0128] Of course, in other embodiments, the cover 333 may also be hemispherical or cylindrical, etc. Alternatively, the cross-section of the cover 333 may be trapezoidal.
[0129] In one embodiment, the second end 52 is provided with a first limiting structure and a second limiting structure. The first limiting structure is located on the side of the auxiliary moving contact 33 away from the auxiliary stationary contact 34, and the second limiting structure is located in the hollow cavity 3331. The first limiting structure and the second limiting structure cooperate to allow the auxiliary moving contact 33 to be located at the second end 52. Since the auxiliary movable contact 33 is sleeved on the second end 52 of the push rod 50, a first limiting structure and a second limiting structure are provided on the second end 52 of the push rod 50. The auxiliary movable contact 33 is located between the first limiting structure and the second limiting structure. The first limiting structure restricts the movement of the auxiliary movable contact 33 away from the auxiliary stationary contact 34, and the second limiting structure restricts the movement of the auxiliary movable contact 33 towards the auxiliary stationary contact 34. In this way, with the cooperation of the first limiting structure and the second limiting structure, the auxiliary movable contact 33 is limited to the second end 52 of the push rod 50, ensuring that the auxiliary movable contact 33 can contact the auxiliary stationary contact 34, while preventing the auxiliary movable contact 33 from separating from the push rod 50.
[0130] In one embodiment, referring to Figures 14 and 17, the wall of the third opening 3332 is adapted to the first stepped surface 521, and the end of the cover 333 facing away from the flange 334 abuts against the second stepped surface 522. During installation, the auxiliary movable contact 33 is sleeved on the first stepped surface 521, which provides an installation position for the auxiliary movable contact 33, facilitating its installation. Simultaneously, the end of the cover 333 facing away from the flange 334 abuts against the second stepped surface 522, which acts as a limiting element, restricting the movement of the auxiliary movable contact 33 relative to the push rod 50 away from the auxiliary stationary contact 34, thus ensuring the reliability of the auxiliary movable contact 33's installation.
[0131] In one embodiment, referring to Figures 14 and 17, the second limiting structure includes a fixing member 36. The fixing member 36 has a fourth through hole 361, and is sleeved onto the second end 52 through the fourth through hole 361, thus fixing the fixing member 36 to the second end 52. By providing the fixing member 36, the fixing member 36 can restrict the movement of the auxiliary moving contact 33 relative to the push rod 50 towards the auxiliary stationary contact 34, preventing the auxiliary moving contact 33 from detaching from the second end 52 and improving the reliability of the installation of the auxiliary moving contact 33.
[0132] It should be noted that there are several ways to fix the fastener 36 to the push rod 50. Optionally, the wall of the fourth through hole 361 is snapped into the push rod 50; or, the wall of the fourth through hole 361 is welded to the push rod 50; or, the fastener 36 is riveted to the push rod 50.
[0133] Furthermore, the length of the fixing member 36 is greater than the length of the third opening 3332. In this way, the fixing member 36 can restrict the movement of the auxiliary moving contact 33 relative to the push rod 50 toward the auxiliary stationary contact 34, prevent the auxiliary moving contact 33 from disengaging from the second end 52, and improve the reliability of the installation of the auxiliary moving contact 33.
[0134] In this embodiment, referring to Figures 14 and 17, the third opening 3332 is a circular hole, and the fixing member 36 is a washer with a diameter larger than that of the circular hole.
[0135] In one embodiment, referring to Figures 6 and 8, the wall of the fourth through hole 361 is adapted to the third stepped surface 523, and the side of the fixing member 36 facing away from the auxiliary stationary contact 34 abuts against the fourth stepped surface 524. During installation, the fixing member 36 is sleeved on the third stepped surface 523, which provides an installation position for the fixing member 36, facilitating its installation. Simultaneously, the fixing member 36 abuts against the fourth stepped surface 524, which acts as a limit, preventing the fixing member 36 from moving away from the auxiliary stationary contact 34 relative to the push rod 50, thus ensuring the reliability of the fixing member 36's installation.
[0136] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.
[0137] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.
[0138] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.
[0139] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.
[0140] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.
[0141] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
[0142] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.
Claims
1. A direct-acting relay, characterized by comprising: include: A housing having a receiving cavity and a first side portion; The magnetic circuit section is disposed within the accommodating cavity, and the magnetic circuit section includes a coil frame on which a coil is wound. Driven by the magnetic circuit section, the push rod is able to move along its axial direction; The contact portion is disposed within the accommodating cavity. The contact portion includes an active contact piece, a main stationary contact, an auxiliary moving contact piece, and an auxiliary stationary contact. The active contact piece and the auxiliary moving contact piece can move synchronously with the push rod. Under the push of the push rod, the active contact piece can contact or separate from the main stationary contact, and the auxiliary moving contact piece can contact or separate from the auxiliary stationary contact. as well as The lead-out portion includes a main lead-out component, an auxiliary lead-out component, and a coil lead-out component. Each of the main lead-out component, the auxiliary lead-out component, and the coil lead-out component has a connecting end and a mounting end. The connecting end is located inside the accommodating cavity, and the mounting end is located outside the housing. The connecting end of the main lead-out component is connected to the main stationary contact, the connecting end of the auxiliary lead-out component is connected to the auxiliary stationary contact, and the connecting end of the coil lead-out component is connected to the coil. The mounting ends of the main lead-out component, the auxiliary lead-out component, and the coil lead-out component are all located on the side of the first side facing away from the accommodating cavity.
2. The direct-acting relay according to claim 1, characterized by The direct-acting relay further includes a yoke plate and an insulating cover. The yoke plate is located at one end of the coil frame along the axial direction of the push rod. The yoke plate has a socket, through which the push rod passes. The push rod can move axially within the socket. The insulating cover is located on the side of the yoke plate away from the coil frame. The mounting end of the main lead is located on the side of the yoke plate facing the insulating cover. The mounting ends of the auxiliary lead and the coil lead are spaced apart from the mounting end of the main lead in a first direction.
3. The direct-acting relay according to claim 2, characterized in that The mounting end of the auxiliary lead is located on the side of the mounting end of the coil lead that is opposite to the mounting end of the main lead.
4. The direct-acting relay according to claim 2, characterized by The mounting end of the auxiliary lead is located between the mounting end of the main lead and the mounting end of the coil lead.
5. The direct-acting relay according to claim 1, characterized by The first side portion is provided with a first through hole, a second through hole and a third through hole. The first through hole, the second through hole and the third through hole are all connected to the accommodating cavity. The first through hole, the second through hole and the third through hole are arranged at intervals along a first direction. The main lead is provided in the first through hole, the coil lead is provided in the second through hole and the auxiliary lead is provided in the third through hole.
6. The direct-acting relay according to claim 5, characterized in that The first through hole and the third through hole are respectively located at the two ends of the first side along the first direction, and the second through hole is located in the middle of the first side along the first direction.
7. The direct-acting relay according to claim 5, wherein The first through hole, the second through hole and the third through hole are provided in at least two. All the first through holes are arranged at intervals along a direction parallel to the second direction, all the second through holes are arranged at intervals along a direction parallel to the second direction, and all the third through holes are arranged at intervals along a direction parallel to the second direction. Each of the main leads, coil leads, and auxiliary leads is provided in at least two. All the main leads are respectively disposed in all the first through holes, all the coil leads are respectively disposed in all the second through holes, and all the auxiliary leads are respectively disposed in all the third through holes, so that the arrangement directions of all the main leads, all the coil leads, and all the auxiliary leads are parallel to each other.
8. The direct-acting relay according to claim 7, characterized in that The mounting ends of the main lead, the coil lead, and the auxiliary lead are parallel to each other.
9. The direct-acting relay according to claim 1, characterized in that The push rod has a first end and a second end, the first end and the second end being the two ends of the axial direction of the push rod, the first end being located outside the coil frame and the second end being located inside the coil frame; The active contact is connected to the first end, the main stationary contact is located on the side of the active contact away from the second end, the auxiliary moving contact is located at the second end, the auxiliary stationary contact is located on the side of the auxiliary moving contact away from the first end, and the magnetic circuit is located between the main stationary contact and the auxiliary stationary contact.
10. The direct-acting relay according to claim 9, characterized in that The direct-acting relay also includes a mounting bracket, which is disposed within the accommodating cavity. The mounting bracket is located on the side of the auxiliary stationary contact opposite to the push rod, and the auxiliary lead-out member is fixedly connected to the mounting bracket.
11. The direct-acting relay according to claim 9, characterized in that The direct-acting relay also includes a metal cover, which is disposed inside the coil frame. The metal cover has a receiving cavity and a through hole. The receiving cavity is connected to the through hole. The second end and the auxiliary moving contact are movably disposed in the receiving cavity. One end of the auxiliary stationary contact is disposed outside the metal cover, and the other end of the auxiliary stationary contact is disposed in the receiving cavity through the through hole.
12. The direct-acting relay according to claim 11, characterized in that The through hole is located on one end face of the metal cover along the axial direction of the push rod and close to the second end; The direct-acting relay also includes an insulating component, and the auxiliary stationary contact is insulated from the metal cover through the insulating component.
13. The direct-acting relay according to claim 12, characterized in that The auxiliary stationary contact is provided with a limiting boss, which is located outside the metal cover. The insulating member is located between the metal cover and the limiting boss, and is fixedly connected to the metal cover and the limiting boss.
14. The direct-acting relay according to any one of claims 1 to 13, characterized in that The main lead, the coil lead, and the auxiliary lead are all sheet-like.
15. The direct-acting relay according to any one of claims 1 to 13, characterized in that The auxiliary moving contact piece is an elastic piece.
16. The direct-acting relay according to any one of claims 1 to 13, characterized in that The magnetic circuit part further comprises a moving iron core, a static magnetic conducting member and an elastic return member, the moving iron core is movably arranged in the inner hole of the coil holder, the moving iron core is connected with the push rod, the static magnetic conducting member is located on the side of the moving iron core away from the auxiliary static contact, one end of the elastic return member is connected with the static magnetic conducting member, the other end of the elastic return member is connected with the moving iron core, and the elastic return member can stretch and contract along the axial direction of the push rod.
17. The direct-acting relay according to any one of claims 1 to 13, characterized by The main static contact and the auxiliary static contact are each provided with at least two, under the pushing of the push rod, all the main static contacts are in contact with or separated from the main active contact piece, and all the auxiliary static contacts are in contact with or separated from the auxiliary active contact piece.