relay

Abstract

The relay includes a housing (1), a first magnetic conductor (610) fixed to the housing (1), a contact assembly (40), and a push rod (210) movable relative to the housing (1). The push rod (210) includes a rod portion (211), a bottom portion (212) connected to one axial end of the rod portion (211), and a first side portion (213) and a second side portion (214) connected to the bottom portion (212). A first through hole (2131) is provided in the first side portion (213), and a second through hole (2141) is provided in the second side portion (214). A movable contactor passes through the first through hole (2131) and the second through hole (2141) and is movable between a first position and a second position. In the first position, the movable contactor abuts against the hole wall of the first through hole (2131) and the hole wall of the second through hole (2141), respectively, and along the axial direction of the rod portion (211), the movable contactor has a magnetic conductive region corresponding to the first magnetic conductive body (610), and no part of the push rod (210) is accommodated between the magnetic conductive region and the first magnetic conductive body (610).

Description

[Technical Field]

[0001] (Cross-reference of related applications) This disclosure claims priority to Chinese patent applications filed on December 01, 2022, bearing application numbers 202211544804.9, 202223233526.3, 202223234176.2, and 202223234023.8, the entire contents of which are incorporated herein by reference.

[0002] TECHNICAL FIELD Embodiments of the present disclosure relate to the technical field of electronic control elements, and in particular to relays. [Background technology]

[0003] A relay is an electronic control element that has a control system (also called input circuit) and a controlled system (also called output circuit), and is usually applied in automatic control circuits. A relay is actually an "automatic switch" that uses a small current to control a large current. Therefore, it plays a role in the circuit as an automatic adjustment, safety protection, conversion circuit, etc.

[0004] When the relay contacts are closing, the push rod moves the moving contact toward the fixed contact until it contacts the fixed contact. When the relay contacts are separating, the push rod moves the moving contact away from the fixed contact until it moves to its initial position. In the prior art, the connection structure between the push rod and the moving contact is not stable enough, resulting in unstable movement of the moving contact during the contact separation process.

[0005] Furthermore, relays are usually equipped with a short-circuit-resistant structure to prevent the contacts from popping off due to a large short-circuit load. Specifically, a magnetic body is provided inside the relay, and when an electromotive repulsive force is generated by a short-circuit current, the magnetic body is magnetized and an electromagnetic attractive force is generated, which prevents the moving contact from popping off instantly and avoids the relay from burning out or exploding.

[0006] In conventional technology, an inverted U-shaped bracket or stopper is typically provided directly above the movable contact to ensure smooth movement of the movable contact, but the magnetic conductive body of the short-circuit resistant structure is also located directly above the movable contact, and part of the U-shaped bracket or stopper exists between the movable contact and the magnetic conductive body, which affects the magnetic field strength of the short-circuit resistant structure. Summary of the Invention [Problem to be solved by the invention]

[0007] The embodiments of the present disclosure provide a relay that solves the problem of the prior art in that the short-circuit resistant structure is sensitive to magnetic field strength. [Means for solving the problem]

[0008] A relay according to an embodiment of the present disclosure includes a housing, a first magnetic body, a contact assembly, and a push rod, wherein the first magnetic body is fixedly connected to the housing and is located on one side of the movable contact toward the fixed contact, the contact assembly includes a movable contact and a fixed contact, the fixed contact is fixedly connected to the housing, the movable contact is provided within the housing, the push rod is movable relative to the housing, the push rod includes a rod portion, a bottom portion, a first side portion, and a second side portion, the bottom portion is connected to one axial end of the rod portion, the first side portion and the second side portion are both connected to the bottom, and the length of the movable contact The rod portion has a first through hole on the first side and a second through hole on the second side, the movable contactor penetrates the first through hole and the second through hole, the movable contactor is movable between a first position and a second position relative to the first through hole and the second through hole along the axial direction of the rod portion, and at the first position, the movable contactor abuts against the hole walls of the first through hole and the hole walls of the second through hole, respectively, and the movable contactor has a magnetic conductive region corresponding to the first magnetic conductive body along the axial direction of the rod portion, and no part of the push rod is accommodated between the magnetic conductive region and the first magnetic conductive body.

[0009] According to some embodiments of the present disclosure, the device further includes a first elastic member connected between the movable contact and the push rod and used to apply an elastic force to the movable contact to move it toward the first position.

[0010] According to some embodiments of the present disclosure, the magnetically conductive region is located between the first side and the second side.

[0011] According to some embodiments of the present disclosure, a movable contact is provided at each end of the movable contactor in the longitudinal direction, one of the movable contacts is located on one side of the first side facing away from the second side, and the other of the movable contacts is located on one side of the second side facing away from the first side, and the magnetic conductive region is located between the two movable contacts.

[0012] According to some embodiments of the present disclosure, a first positioning portion and a second positioning portion are protruded from one side of the movable contactor, the first positioning portion corresponds to the position of the first side portion, and the second positioning portion corresponds to the position of the second side portion, and in the longitudinal direction of the movable contactor, the movable contactor is positioned at a predetermined position on the push rod via the first positioning portion and the second positioning portion.

[0013] According to some embodiments of the present disclosure, one side of the first side portion facing the second side portion has a first stopper surface, one side of the second side portion facing the first side portion has a second stopper surface, the first positioning portion abuts against the first stopper surface, and the second positioning portion abuts against the second stopper surface.

[0014] According to some embodiments of the present disclosure, the first positioning portion and the second positioning portion are provided to protrude from a surface of one side of the movable contactor facing the fixed contactor.

[0015] According to some embodiments of the present disclosure, the relay further includes a second magnetic conductive body, which is connected to the magnetically conductive region of the movable contactor and fixedly connected to one side of the movable contactor facing away from the first magnetic conductive body, thereby forming a magnetic circuit between the first magnetic conductive body and the second magnetic conductive body in the width direction of the movable contactor, and no part of the push rod is contained between the second magnetic conductive body and the first magnetic conductive body along the axial direction of the rod portion.

[0016] According to some embodiments of the present disclosure, the second magnetic conductive body is U-shaped and covers the magnetic conductive region along the width direction of the movable contactor.

[0017] According to some embodiments of the present disclosure, the second magnetic conductive body includes at least two sub-magnetic conductive bodies, each of which is U-shaped, and the movable contactor is provided with at least one perforation, and the at least two sub-magnetic conductive bodies are both connected to one side of the movable contactor facing away from the first magnetic conductive body, and the sides of the at least two sub-magnetic conductive bodies pass through at least one perforation, thereby coming close to or contacting the first magnetic conductive body through the perforation, and forming at least two independent magnetic conductive circuits in the width direction of the movable contactor.

[0018] According to some embodiments of the present disclosure, there is a gap between the two sides located at one of the perforations.

[0019] According to some embodiments of the present disclosure, the housing has a mounting portion, the mounting portion is located on one radial side of the push rod, the radial direction is perpendicular to the movement direction of the push rod, and the first magnetic conductive body is fixedly connected to the mounting portion.

[0020] According to some embodiments of the present disclosure, the housing includes a sidewall, the sidewall being located on one radial side of the push rod, and the mounting portion being formed on the sidewall.

[0021] According to some embodiments of the present disclosure, the sidewall surrounds the push rod along a circumferential direction of the push rod.

[0022] According to some embodiments of the present disclosure, the housing includes a base and an outer cover; The outer cover is connected to the base, and the outer cover and the base form a chamber for accommodating the contact assembly, the push rod, and the first magnetic conductive body, and the base and / or the outer cover form the side wall.

[0023] According to some embodiments of the present disclosure, the first magnetic conductive body includes a connection portion and a suspension portion, the connection portion is fixedly connected to the mounting portion and defines an imaginary plane perpendicular to the direction of movement of the push rod, the connection portion has a first orthogonal projection on the imaginary plane, the suspension portion has a second orthogonal projection on the imaginary plane, and the movable contactor has a third orthogonal projection on the imaginary plane, the first orthogonal projection does not overlap with the third orthogonal projection, and the second orthogonal projection at least partially overlaps with the third orthogonal projection.

[0024] According to some embodiments of the present disclosure, the first magnetic conductive body has a flat plate structure.

[0025] According to some embodiments of the present disclosure, the first magnetic conductive body is inserted into the mounting portion of the housing along an insertion direction, the insertion direction being perpendicular to the movement direction of the push rod.

[0026] According to some embodiments of the present disclosure, the mounting portion includes a first mounting hole penetrating the inner surface and the outer surface of the housing, the hole wall of the first mounting hole having a first positioning wall structure and a first gap wall structure, the first magnetic conductive body is inserted into the first mounting hole, and a portion of the outer wall surface of the first magnetic conductive body abuts the first positioning wall structure, there is a gap between the portion of the outer wall surface of the first magnetic conductive body and the first gap wall structure, and the gap is filled with a sealant.

[0027] According to some embodiments of the present disclosure, a portion of the outer wall surface of the first magnetic conductive body is interference-fitted into the first positioning wall structure.

[0028] According to some embodiments of the present disclosure, the insertion direction of the first magnetic conductive body is perpendicular to the length direction of the movable contactor.

[0029] According to some embodiments of the present disclosure, the fixed contact is inserted into the housing along the insertion direction.

[0030] According to some embodiments of the present disclosure, the housing further includes a second mounting hole penetrating its inner surface and outer surface, the hole wall of the second mounting hole has a second positioning wall structure and a second gap wall structure, the fixed contact is inserted into the second mounting hole, and a portion of the outer wall surface of the fixed contact abuts the second positioning wall structure, there is a gap between the portion of the outer wall surface of the fixed contact and the second gap wall structure, and the gap is filled with a sealant.

[0031] According to some embodiments of the present disclosure, a portion of the outer wall surface of the fixed contact is interference-fitted into the second positioning wall structure.

[0032] One embodiment of the above invention has at least the following advantages or beneficial effects.

[0033] In the relay of the embodiment of the present disclosure, on the one hand, when the push rod drives the movable contactor to move, the push rod forms two tension points with the movable contactor via the first side portion and the second side portion, and the two tension points are arranged along the length direction of the movable contactor, so that the movable contactor moves more smoothly. On the other hand, in the movement direction of the push rod mechanism, no part of the push rod is accommodated between the magnetically conductive region of the movable contactor and the first magnetic conductive body, so that the push rod is prevented from affecting the magnetic field strength between the first movable contactor and the first magnetic conductive body, and short-circuit resistance is ensured.

[0034] These and other features and advantages of the present disclosure will become more apparent from the detailed description of illustrative embodiments thereof with reference to the drawings. [Brief explanation of the drawings]

[0035] [Figure 1] 1 illustrates a top view of one embodiment of a relay of the present disclosure, with the outer cover omitted. [Figure 2] 2 shows a cross-sectional view taken along line AA in FIG. 1. [Figure 3] 3 shows a cross-sectional view taken along line BB in FIG. 2. [Figure 4] A schematic diagram of a push rod is shown. [Figure 5] FIG. 10 is a front schematic view of the push rod, contact assembly, and yoke plate after assembly. [Figure 6] FIG. 10 is a perspective schematic view of the push rod, the contact assembly, and the yoke plate after assembly. [Figure 7] A schematic side view of Figure 5 is shown. [Figure 8] 8 shows a cross-sectional view taken along line CC in FIG. 7. [Figure 9] 1 shows a schematic diagram of the relative positions of a first orthogonal projection, a second orthogonal projection, and a third orthogonal projection onto a virtual plane. [Figure 10] 3 shows a cross-sectional view taken along line DD in FIG. 2. [Figure 11] FIG. 11 is a partial enlarged view of the X1 portion of FIG. [Figure 12] FIG. 11 is a partial enlarged view of the X2 portion of FIG. [Figure 13] FIG. 2 is a schematic diagram of a first magnetic conductive body, a second magnetic conductive body, and a contact assembly according to a first embodiment of the present disclosure after assembly. [Figure 14] 10A and 10B are schematic views showing a movable contact and a second magnetic conductive body according to a second embodiment of the present disclosure, respectively, from two different viewpoints after assembly. [Figure 15] 10A and 10B are schematic views showing a movable contact and a second magnetic conductive body according to a second embodiment of the present disclosure, respectively, from two different viewpoints after assembly. [Figure 16]1A-1C show schematic views of an elastic member according to an embodiment of the present disclosure from two different perspectives. [Figure 17] 1A-1C show schematic views of an elastic member according to an embodiment of the present disclosure from two different perspectives. [Figure 18] 1 illustrates a top view of another embodiment of a relay of the present disclosure, with the top cover omitted. [Figure 19] 19 shows a cross-sectional view taken along line EE in FIG. 18. [Figure 20] 20 shows a cross-sectional view taken along line FF in FIG. 19. [Figure 21] A schematic diagram of a push rod is shown. [Figure 22] FIG. 10 is a front schematic view of the push rod, contact assembly, and yoke plate after assembly. [Figure 23] FIG. 10 is a perspective schematic view of the push rod, the contact assembly, and the yoke plate after assembly. [Figure 24] A schematic side view of Figure 22 is shown. [Figure 25] 25 shows a cross-sectional view taken along line GG in FIG. 24. [Figure 26] 3A and 3B show schematic views of a first elastic member from two different perspectives. [Figure 27] 3A and 3B show schematic views of a first elastic member from two different perspectives. [Figure 28] 1 illustrates a top view of another embodiment of a relay of the present disclosure, with the top cover omitted. [Figure 29] A cross-sectional view taken along line HH in FIG. 28 is shown. [Figure 30] A cross-sectional view taken along line II in FIG. 29 is shown. [Figure 31] FIG. 10 is a schematic diagram showing an auxiliary contact assembly provided at one end of a push rod mechanism in a relay according to an embodiment of the present disclosure. [Figure 32] 1A and 1B show schematic diagrams of an auxiliary movable spring according to an embodiment of the present disclosure. [Figure 33] 1 shows a schematic diagram of an auxiliary fixing spring according to an embodiment of the present disclosure. [Figure 34] 1 shows a schematic diagram of the push rod and auxiliary contact assembly after assembly. [Figure 35] 1 illustrates a top view of another embodiment of a relay of the present disclosure, with the top cover omitted. [Figure 36] A cross-sectional view taken along line JJ in FIG. 35 is shown. [Figure 37] A cross-sectional view taken along line KK in FIG. 36 is shown. [Figure 38] A cross-sectional view taken along line MM in FIG. 36 is shown. [Figure 39] 38. FIG. 39 is a partially enlarged view of the X3 portion of FIG. [Figure 40] A cross-sectional view taken along line NN in Figure 35 is shown. [Figure 41] 41 shows an enlarged partial view of the X4 portion of FIG. 40. [Figure 42] 36 shows a cross-sectional view taken along line PP in FIG. 35. [Figure 43] FIG. 43 is a partial enlarged view of the X5 portion of FIG. 42. [Figure 44] 1 shows a schematic perspective view of a relay according to an embodiment of the present disclosure, with the bottom surface of the base facing upward. DETAILED DESCRIPTION OF THE INVENTION

[0036] Next, exemplary embodiments will be described in more detail with reference to the drawings. However, the exemplary embodiments may be embodied in various forms and should not be understood as being limited to the embodiments described herein. Although relative terms such as "upper" and "lower" are used herein to describe the relative relationship between one component and another component shown in the figures, these terms are used herein only for convenience, such as according to the exemplary orientation shown in the figures. It will be understood that if the device shown in the figures is turned upside down, the component described as "upper" would become the "lower" component. Other relative terms such as "top" and "bottom" have similar meanings. When a structure is "upper" of another structure, this may mean that the structure is integrally formed on the other structure, or that the structure is "directly" disposed on the other structure, or that the structure is "indirectly" disposed on the other structure via another structure.

[0037] The terms "a," "an," "the," and "said" are used to indicate the presence of one or more elements / components etc. The terms "comprise" and "have" are used to indicate an open inclusion and mean that there may be additional elements / components etc. in addition to the listed elements / components etc. The terms "first," "second," etc. are used as markers only and not as quantitative limitations on their subject matter.

[0038] In the description herein, the terms "one embodiment," "some embodiments," "particular embodiments," and the like mean that a particular feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. Exemplary references to such terms in the description herein do not necessarily refer to the same embodiment or example. Furthermore, the described particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.

[0039] As shown in FIGS. 1 to 3, FIG. 1 shows a top view of a relay according to an embodiment of the present disclosure, with the outer cover omitted, FIG. 2 shows a cross-sectional view taken along line AA in FIG. 1, and FIG. 3 shows a cross-sectional view taken along line BB in FIG. 2. The relay according to the embodiment of the present disclosure includes a housing 1, a push rod mechanism 20, a magnetic circuit mechanism 30, and a contact assembly 40. In the embodiment of the present disclosure, the housing 1 is the housing of the relay. The push rod mechanism 20, the magnetic circuit mechanism 30, and the contact assembly 40 are arranged on a base 10, and the magnetic circuit mechanism 30 controls the contact or separation of the contacts of the contact assembly 40 via the push rod mechanism 20.

[0040] The housing 1 may include a base 10 and an outer cover (not shown), which is connected to the base 10 to form a chamber for accommodating the push rod mechanism 20, the magnetic circuit mechanism 30 and the contact assembly 40.

[0041] The magnetic circuit mechanism 30 includes a yoke structure 310, a bobbin 320, and a coil 330. The yoke structure 310 defines a chamber, and the bobbin 320 and the coil 330 are both disposed within the chamber of the yoke structure 310. The coil 330 is wound around the outer periphery of the bobbin 320 to form a magnetic control circuit. The bobbin 320 has a central hole 321 in the direction in which the contacts of the contact assembly 40 make contact or separate, and the central hole 321 is used to pass one end of the push rod mechanism 20 through.

[0042] For example, the yoke structure 310 includes a yoke plate 311 and a U-shaped yoke 312, which are connected to each other to form a ring shape. The yoke plate 311 has a through hole 3111 through which the push rod mechanism 20 passes.

[0043] Of course, in other embodiments, the yoke structure 310 may comprise a cylindrical yoke and a yoke plate 311, which are connected together to form a ring shape.

[0044] The magnetic circuit mechanism 30 further includes two permanent magnets 340. The two permanent magnets 340 are disposed on the bobbin 320 and are located on both sides of the push rod mechanism 20 in the direction of movement. The two permanent magnets 340 form a magnetic holding magnetic circuit structure, which helps reduce electricity costs, extend service life, and improve stability.

[0045] Of course, in other embodiments, permanent magnet 340 may not be provided.

[0046] 3, the push rod mechanism 20 is movable between a fifth position and a sixth position relative to the base 10. When the push rod mechanism 20 is in the fifth position, the contact assembly 40 is in a fully closed state, and when the push rod mechanism 20 is in the sixth position, the contact assembly 40 is in a fully disconnected state. The push rod mechanism 20 includes a push rod 210 and an iron core 220, which is connected to the push rod 210. The iron core 220 can move in the direction of contact or separation of the contacts by the action of a magnetic control circuit formed by a coil 330, which further moves the push rod 210 to control the contact or separation of the contacts of the contact assembly 40.

[0047] The term "fully closed" refers to the state of the contact assembly 40 when the movable contact and the fixed contact of the contact assembly 40 have come into contact and then completed the overtravel. The term "disconnected" refers to the state of the contact assembly 40 when the contact gap is at its maximum after the movable contact and the fixed contact of the contact assembly 40 have been disconnected.

[0048] Continuing to refer to Figures 1 to 3, the contact assembly 40 comprises movable contacts 410, 430 and fixed contacts 420, 440, the fixed contacts 420, 440 are fixedly attached to the base 10, the movable contacts 410, 430 are provided within the housing 1, and the movable contacts 410, 430 are attached to the push rod mechanism 20 and move together with the push rod mechanism 20.

[0049] In this embodiment, the contact assemblies 40 are divided into two groups: a first contact assembly 40a and a second contact assembly 40b. The first contact assembly 40a and the second contact assembly 40b are arranged along the direction of movement of the push rod mechanism 20. Furthermore, the first contact assembly 40a is close to the magnetic circuit mechanism 30, and the second contact assembly 40b is far from the magnetic circuit mechanism 30.

[0050] The first contact assembly 40a includes a first movable contactor 410 and two first fixed contactors 420. The second contact assembly 40b includes a second movable contactor 430 and two second fixed contactors 440. Both ends of the first movable contactor 410 can be in contact with or spaced apart from the two first fixed contactors 420, respectively, and both ends of the second movable contactor 430 can be in contact with or spaced apart from the two second fixed contactors 440, respectively.

[0051] Of course, in other embodiments, the contact assemblies 40 may be in one group or other quantities.

[0052] Both ends of the movable contacts 410, 430 in the longitudinal direction function as movable contacts, and the movable contacts may protrude from other parts of the movable contacts 410, 430 or may be flush with other parts. The parts of the fixed contacts 420, 440 that come into contact with the movable contacts function as fixed contacts, and the fixed contacts may protrude from other parts of the fixed contacts 420, 440 or may be flush with other parts.

[0053] As an example, the first movable contactor 410 includes a first movable spring body 416 and a first movable contact 411, the first movable contact 411 and the first movable spring body 416 having separate structures, and the first movable contact 411 and the first movable spring body 416 can be connected by crimping, but this is not limitative. The first fixed contactor 420 includes a first fixed spring body 421 and a first fixed contact 422, the first fixed contact 422 and the first fixed spring body 421 having separate structures, and the first fixed contact 422 and the first fixed spring body 421 can be connected by crimping, but this is not limitative.

[0054] The second movable contactor 430 includes a second movable spring body 434 and a second movable contact 431, the second movable contact 431 and the second movable spring body 434 having separate structures, and the second movable contact 431 and the second movable spring body 434 can be connected by crimping, but this is not limited to this. The second fixed contactor 440 includes a second fixed spring body 441 and a second fixed contact 442, the second fixed contact 442 and the second fixed spring body 441 having separate structures, and the second fixed contact 442 and the second fixed spring body 441 can be connected by crimping, but this is not limited to this.

[0055] Of course, in other embodiments, the first movable contact 411 and the first movable spring body 416 may be an integral structure, the first fixed contact 422 and the first fixed spring body 421 may be an integral structure, the second movable contact 431 and the second movable spring body 434 may be an integral structure, or the second fixed contact 442 and the second fixed spring body 441 may be an integral structure.

[0056] It will be appreciated that in other embodiments the housing 1 may be a ceramic cover.

[0057] 2 and 3, the housing 1 has a mounting portion 11 located on one radial side of the push rod mechanism 20, and the radial direction is perpendicular to the moving direction D3 of the push rod mechanism 20. The relay of the embodiment of the present disclosure further includes a first magnetic conductive body 610, which corresponds to the contact assembly 40, i.e., is located on one side of the movable contact facing the fixed contact. The first magnetic conductive body 610 is fixedly connected to the base 10.

[0058] The correspondence between the first magnetic conductive bodies 610 and the contact assemblies 40 means that the number of the first magnetic conductive bodies 610 corresponds to the number of the contact assemblies 40, and that the positions of the first magnetic conductive bodies 610 correspond to the positions of the contact assemblies 40. In this embodiment, since there are two contact assemblies 40, there are also two first magnetic conductive bodies 610, and one first magnetic conductive body 610 corresponds to the first movable contactor 410 of the first contact assembly 40a, and the other first magnetic conductive body 610 corresponds to the second movable contactor 430 of the second contact assembly 40b.

[0059] In the relay of the disclosed embodiment, the mounting portion 11 of the housing 1 is located on one radial side of the push rod mechanism 20, and the radial direction is perpendicular to the movement direction of the push rod mechanism 20. Therefore, the position where the first magnetic conductive body 610 is fixedly connected to the mounting portion 11 is also located on one side of the push rod mechanism 20. In other words, it can be understood that the position where the first magnetic conductive body 610 is connected to the mounting portion 11 of the housing 1 is not located above the movable contact. In this way, after multiple first magnetic conductive bodies 610 are provided in the relay, each first magnetic conductive body 610 does not affect the movement of the push rod mechanism 20. Therefore, the relay of this embodiment can be provided with first magnetic bodies 610 corresponding to multiple contact assemblies 40, and each contact assembly 40 is provided with a short-circuit resistant structure.

[0060] The housing 1 has a top wall, a bottom wall, and a side wall, and the top wall and the bottom wall are arranged opposite each other along the movement direction of the push rod mechanism 20, and the side wall is connected to the top wall and the bottom wall. The side wall is located on one radial side of the push rod mechanism 20, and the mounting portion 11 is formed on the side wall.

[0061] Furthermore, the side wall surrounds the push rod mechanism 20 in the circumferential direction of the push rod mechanism 20 .

[0062] The shape of the housing 1 can be variously embodied, and for example, the housing 1 may be a cube, a cylinder, or the like, but it is understood that the shape is not limited to these.

[0063] The base 10 and / or outer cover of the housing 1 has side walls formed thereon, and the side walls are provided with mounting portions 11. Specifically, the mounting portions 11 may be formed only on the base 10 or only on the outer cover. Of course, the mounting portions 11 may also be formed on both the base 10 and the outer cover.

[0064] In the relay of the embodiment of the present disclosure, the first magnetic conductive body 610 is arranged above the movable contactors 410, 430, and when the movable contactors 410, 430 come into contact with the fixed contactors 420, 440, a current flows through the movable contactors 410, 430, and it can be understood that a magnetic conductive circuit is formed around the outer periphery of the movable contactors 410, 430 in the width direction D2, surrounding the movable contactors 410, 430. Due to the presence of the first magnetic body 610, most of the magnetic field of the magnetic circuit is concentrated toward the first magnetic body 610, magnetizing the first magnetic body 610. As a result, an attractive force along the contact pressure direction is generated between the first magnetic body 610 and the moving contacts 410, 430 through which current flows. This attractive force is superimposed on the contact pressure to generate a larger contact pressure, which can resist the electromotive repulsive force caused by the short-circuit current between the moving contacts of the moving contacts 410, 430 and the fixed contacts of the fixed contacts 420, 440, and ensure that the moving contacts of the moving contacts 410, 430 and the fixed contacts of the fixed contacts 420, 440 do not pop off.

[0065] Furthermore, since the first magnetic conductive body 610 is fixedly connected to the base 10 and does not move together with the push rod mechanism 20, the attractive force of the movable contacts 410, 430 to the first magnetic conductive body 610 acts on the base 10, and since the position of the base 10 is relatively fixed, the attractive force of the first magnetic conductive body 610 is unrelated to the push rod mechanism 20. This prevents the holding force of the push rod mechanism 20 from being insufficient, causing the movable contacts 410, 430 and the fixed contacts 420, 440 to pop off, which can result in the relay burning or exploding.

[0066] As shown in FIGS. 4 to 6, FIG. 4 shows a schematic diagram of the push rod 210. FIG. 5 shows a schematic front view of the push rod 210, the contact assembly 40, and the yoke plate 311 after they are assembled. FIG. 6 shows a schematic perspective view of the push rod 210, the contact assembly 40, and the yoke plate 311 after they are assembled. The push rod 210 is used to move the first movable contact 410 into contact with or away from the first fixed contact 420. The push rod 210 includes a rod portion 211, a bottom portion 212, a first side portion 213, and a second side portion 214. The rod portion 211 is movably inserted into a through-hole 3111 of the yoke plate 311, and the iron core 220 is connected to the rod portion 211. The bottom 212 is connected to one axial end of the rod portion 211, and the first side portion 213 and the second side portion 214 are both connected to the bottom portion 212 and are arranged on opposite sides of each other along the longitudinal direction D1 of the first movable contactor 410. A first through hole 2131 is provided in the first side portion 213, and a second through hole 2141 is provided in the second side portion 214. The first movable contactor 410 passes through the first through hole 2131 and the second through hole 2141, and is movable between a first position and a second position relative to the first through hole 2131 and the second through hole 2141 along the axial direction of the rod portion 211. At the first position, the first movable contactor 410 abuts against the hole walls of the first through hole 2131 and the second through hole 2141, respectively.

[0067] The relay further includes a first elastic member 500a, which is disposed between the first movable contact 410 and the bottom 212 of the push rod 210 and is used to apply an elastic force to the first movable contact 410 to move it toward the first position.

[0068] When the first contact assembly 40a of the relay is closing, the push rod 210 drives the first movable contact 410 to move toward the first fixed contact 420. Before the first movable contact 410 and the first fixed contact 420 come into contact, the first elastic member 500a causes the first movable contact 410 to abut against the wall of the first through hole 2131 and the wall of the second through hole 2141, respectively, and to be in a first position. After the first movable contact 410 and the first fixed contact 420 come into contact, the first fixed contact 420 is fixedly attached to the base 10, so the first movable contact 410 is stopped by the first fixed contact 420 and cannot move any further. At this time, the push rod 210 continues to move, and the first elastic member 500a is gradually compressed until the overtravel is completed. At this time, the first movable contactor 410 is in a second position relative to the first through-hole 2131 and the second through-hole 2141.

[0069] When the first contact assembly 40a of the relay is separated, the process of the push rod 210 moving away from the first fixed contact 420 is divided into two stages. In the first stage, the push rod 210 moves, but the first movable contact 410 does not move with the push rod 210. In the first stage, the first movable contact 410 moves from the second position to the first position relative to the first through hole 2131 and the second through hole 2141. At the start of the second stage, the first movable contact 410 has already moved to the first position relative to the first through hole 2131 and the second through hole 2141, and at this time, the first movable contact 410 is in contact with the hole walls of the first through hole 2131 and the hole walls of the second through hole 2141, respectively. Thereafter, the first movable contactor 410 moves accordingly due to the movement of the push rod 210, and the first movable contactor 410 is separated from the first fixed contactor 420. In the second stage, when the push rod 210 moves the first movable contactor 410, the first movable contactor 410 abuts against the hole wall of the first through hole 2131 and the hole wall of the second through hole 2141, respectively. Therefore, the push rod 210 acts on the first movable contactor 410 via the first side portion 213 and the second side portion 214, which corresponds to the first movable contactor 410 being separated from the first fixed contactor 420.

[0070] From the above, it can be seen that the position where the hole wall of the first through hole 2131 abuts against the first movable contactor 410 corresponds to the point of application of one force, and the position where the hole wall of the second through hole 2141 abuts against the first movable contactor 410 corresponds to the point of application of the other force. By setting two points of application and arranging the two points of application along the length direction D1 of the first movable contactor 410, the area over which the tension force applied to the first movable contactor 410 from the push rod 210 acts becomes larger, and the push rod 210 moves the first movable contactor 410 more smoothly.

[0071] As shown in FIG. 3, along the axial direction of the rod portion 211 (i.e., the movement direction D3 of the push rod mechanism 20), the first movable contactor 410 has a magnetically conductive region 415 corresponding to the first magnetic conductive body 610, and no part of the push rod 210 is accommodated between the magnetically conductive region 415 and the first magnetic conductive body 610.

[0072] As a result, on the one hand, when the push rod 210 drives and moves the first movable contactor 410, the push rod 210 forms two tension action points between the first movable contactor 410 and the first side portion 213 and the second side portion 214, and the two tension action points are arranged along the longitudinal direction D1 of the first movable contactor 410, making the movement of the first movable contactor 410 smoother; on the other hand, in the movement direction D3 of the push rod mechanism 20, no part of the push rod 210 is contained between the magnetic conductive region 415 of the first movable contactor 410 and the first magnetic conductive body 610, so the push rod 210 is prevented from affecting the magnetic field strength between the first movable contactor 410 and the first magnetic conductive body 610, and short-circuit resistance is ensured.

[0073] The magnetically conductive region 415 of the first movable contact 410 is located between the first side 213 and the second side 214 .

[0074] 5, first movable contacts 411 are provided at both ends of the first movable contactor 410 in the longitudinal direction D1, one first movable contact 411 being located on one side of the first side portion 213 facing away from the second side portion 214, and the other first movable contact 411 being located on one side of the second side portion 214 facing away from the first side portion 213. In other words, the points of action of the two forces acting on the first movable contactor 410 from the first side portion 213 and the second side portion 214 are located between the two first movable contacts 411 of the first movable contactor 410. The magnetically conductive region 415 is located between the two first movable contacts 411.

[0075] As shown in Figures 7 and 8, Figure 7 shows a schematic side view of Figure 5. Figure 8 shows a cross-sectional view taken along line CC in Figure 7. A first positioning portion 412 and a second positioning portion 413 are protruded from one side of the first movable contactor 410. The first positioning portion 412 corresponds to the position of the first side portion 213, and the second positioning portion 413 corresponds to the position of the second side portion 214. In the longitudinal direction D1 of the first movable contactor 410, the first movable contactor 410 is positioned at a predetermined position on the push rod 210 by the first positioning portion 412 and the second positioning portion 413.

[0076] In this embodiment, by providing the first positioning portion 412 and the second positioning portion 413 on the first movable contactor 410, the first movable contactor 410 can be attached to a predetermined position on the push rod 210 in its longitudinal direction D1, thereby preventing relative shaking between the first movable contactor 410 and the first side portion 213 and the second side portion 214, and further improving the stability of the first movable contactor 410 when it moves.

[0077] Specifically, in the axial direction of the rod portion 211 (i.e., the movement direction D3 of the push rod mechanism 20), the first elastic member 500a is disposed between the bottom portion 212 of the push rod 210 and the first movable contactor 410, and the first movable contactor 410 is always subjected to the elastic force of the first elastic member 500a, and therefore abuts against the hole wall of the first through hole 2131 and the hole wall of the second through hole 2141. Therefore, no relative swing occurs between the first movable contactor 410 and the push rod 210 in the axial direction of the rod portion 211 (i.e., the movement direction D3 of the push rod mechanism 20).

[0078] In the length direction D1 of the first movable contactor 410, by providing the first positioning portion 412 and the second positioning portion 413, relative shaking between the first movable contactor 410 and the push rod 210 does not occur.

[0079] By limiting the size of the first through hole 2131 and the second through hole 2141 in the width direction D2 of the first movable contactor 410, the size of the first through hole 2131 and the second through hole 2141 in the width direction D2 of the first movable contactor 410 matches the width of the first movable contactor 410, thereby preventing large gaps from occurring between the first movable contactor 410 and the hole walls of the first and second through holes.

[0080] 8, a first stopper surface 2132 is provided on one side of the first side portion 213 facing the second side portion 214, and a second stopper surface 2142 is provided on one side of the second side portion 214 facing the first side portion 213. The first positioning portion 412 abuts against the first stopper surface 2132, and the second positioning portion 413 abuts against the second stopper surface 2142.

[0081] Of course, in other embodiments, there may be a gap between the first positioning portion 412 and the first stopper surface 2132, and there may be a gap between the second positioning portion 413 and the second stopper surface 2142. Note that the sizes of the above two gaps should not be too large. The size of the gap needs to be large enough to allow the first positioning portion 412 and the second positioning portion 413 of the first movable contactor 410 to be easily installed between the first side portion 213 and the second side portion 214, and to prevent relative shaking between the first movable contactor 410 and the push rod 210 along the longitudinal direction D1 of the first movable contactor 410.

[0082] The first positioning portion 412 and the second positioning portion 413 are provided to protrude from the surface of one side of the first movable contact 410 facing the first fixed contact 420 .

[0083] 4 to 6, the second contact assembly 40b and the first contact assembly 40a are arranged along the axial direction of the rod portion 211 (i.e., the movement direction D3 of the push rod mechanism 20). The push rod 210 further includes a spacer portion 215, a third side portion 216, and a fourth side portion 217, where the third side portion 216 is connected to one end of the first side portion 213 facing away from the bottom portion 212, the fourth side portion 217 is connected to one end of the second side portion 214 facing away from the bottom portion 212, and the spacer portion 215 is provided between the third side portion 216 and the fourth side portion 217. A third through hole 2161 is provided in the third side portion 216, and a fourth through hole 2171 is provided in the fourth side portion 217, and the second movable contactor 430 passes through the third through hole 2161 and the fourth through hole 2171. The third through hole 2161 is located on one side in the axial direction of the rod portion 211 of the spacer portion 215, and the first through hole 2131 is located on the other side in the axial direction of the rod portion 211 of the spacer portion 215. The fourth through hole 2171 is located on one side in the axial direction of the rod portion 211 of the spacer portion 215, and the second through hole 2141 is located on the other side in the axial direction of the rod portion 211 of the spacer portion 215. The second movable contactor 430 is movable along the axial direction of the rod portion 211 (i.e., the movement direction D3 of the push rod mechanism 20) between a third position and a fourth position relative to the third through hole 2161 and the fourth through hole 2171. At the third position, the second movable contactor 430 abuts against the hole wall of the third through hole 2161 and the hole wall of the fourth through hole 2171, respectively.

[0084] The relay further includes a second elastic member 500b, which is provided between the second movable contact 430 and the spacer portion 215 and is used to apply an elastic force to the second movable contact 430 to move it toward the third position.

[0085] The operation process in which the push rod 210 drives the second movable contact 430 to contact or separate from the first fixed contact 420 is the same as that of the first contact assembly 40a, and therefore will not be repeated here.

[0086] Therefore, the position where the hole wall of the third through hole 2161 abuts against the second movable contactor 430 corresponds to the point of application of one force, and the position where the hole wall of the fourth through hole 2171 abuts against the second movable contactor 430 corresponds to the point of application of the other force. By setting two points of application of forces and arranging the two points of application of forces along the longitudinal direction D1 of the second movable contactor 430, the area over which the tension force applied to the second movable contactor 430 from the push rod 210 acts becomes larger, and the push rod 210 moves the second movable contactor 430 more smoothly.

[0087] 4, the bottom portion 212, the spacer portion 215, the first side portion 213, and the second side portion 214 are enclosed together to form a cavity 218, and the first through-hole 2131 and the second through-hole 2141 are both in communication with the cavity 218, while the third through-hole 2161 and the fourth through-hole 2171 are not in communication with the cavity 218. The cavity 218 can be used to accommodate a short-circuit resistant structure.

[0088] 5, second movable contacts 431 are provided at both ends of the second movable contactor 430 in the longitudinal direction D1, one second movable contact 431 being located on one side of the third side portion 216 facing away from the fourth side portion 217, and the other second movable contact 431 being located on one side of the fourth side portion 217 facing away from the third side portion 216. In other words, the points of action of the two forces acting on the second movable contactor 430 from the third side portion 216 and the fourth side portion 217 are located between the two second movable contacts 431 of the second movable contactor 430.

[0089] 7 and 8, a third positioning portion 432 and a fourth positioning portion 433 are protruded from one side of the second movable contactor 430. The third positioning portion 432 corresponds to the position of the third side portion 216, and the fourth positioning portion 433 corresponds to the position of the fourth side portion 217. In the length direction D1 of the second movable contactor 430, the second movable contactor 430 is provided at a predetermined position on the push rod 210 by the third positioning portion 432 and the fourth positioning portion 433.

[0090] In this embodiment, by providing the second movable contactor 430 with the third positioning portion 432 and the fourth positioning portion 433, the second movable contactor 430 can be attached to a predetermined position on the push rod 210 in its longitudinal direction D1, thereby preventing relative shaking between the second movable contactor 430 and the third side portion 216 and the fourth side portion 217, and further improving the stability of the second movable contactor 430 when it moves.

[0091] Specifically, in the axial direction of the rod portion 211 (i.e., movement direction D3 of the push rod mechanism 20), the second elastic member 500b is disposed between the spacer portion 215 and the second movable contactor 430, and the second movable contactor 430 is constantly subjected to the elastic force of the second elastic member 500b, so that the second movable contactor 430 abuts against the hole wall of the third through hole 2161 and the hole wall of the fourth through hole 2171. Therefore, no relative swing occurs between the second movable contactor 430 and the push rod 210 in the axial direction of the rod portion 211 (i.e., movement direction D3 of the push rod mechanism 20).

[0092] By providing the third positioning portion 432 and the fourth positioning portion 433 in the length direction D1 of the second movable contactor 430, relative shaking between the second movable contactor 430 and the push rod 210 does not occur.

[0093] By limiting the size of the third through hole 2161 and the fourth through hole 2171 in the width direction D2 of the second movable contactor 430, the size of the third through hole 2161 and the fourth through hole 2171 in the width direction D2 of the second movable contactor 430 matches the width of the second movable contactor 430, thereby avoiding the occurrence of large gaps between the second movable contactor 430 and the hole walls of the third and fourth through holes.

[0094] 8 , a third stopper surface 2162 is provided on one side of the third side portion 216 facing the fourth side portion 217, and a fourth stopper surface 2172 is provided on one side of the fourth side portion 217 facing the third side portion 216. The third positioning portion 432 abuts against the third stopper surface 2162, and the fourth positioning portion 433 abuts against the fourth stopper surface 2172.

[0095] Of course, in other embodiments, there may be a gap between the third positioning portion 432 and the third stopper surface 2162, and there may be a gap between the fourth positioning portion 433 and the fourth stopper surface 2172.

[0096] The third positioning portion 432 and the fourth positioning portion 433 are provided to protrude from the surface of one side of the second movable contact 430 facing the second fixed contact 440 .

[0097] The rod portion 211, the bottom portion 212, the first side portion 213, the second side portion 214, the spacer portion 215, the third side portion 216, and the fourth side portion 217 of the push rod 210 are of an integral structure.

[0098] By way of example, the push rod 210 is made of plastic and is formed by injection molding.

[0099] The first elastic member 500a and the second elastic member 500b may be spring pieces, but are not limited to this.

[0100] It can be seen that no part of the push rod 210 is contained between the magnetic conductive region 435 of the second movable contact 430 and the corresponding first magnetic conductive body 610, and the magnetic field strength between the second movable contact 430 and the corresponding first magnetic conductive body 610 is not affected by the push rod 210.

[0101] 5, 16, and 17, the first elastic member 500a includes a first elastic portion 510 and a second elastic portion 520, which are integrally formed. The first movable contact 410 is attached to the push rod 210 of the push rod mechanism 20 via the first elastic portion 510. The first elastic portion 510 is used to provide overtravel contact pressure when the push rod mechanism 20 is in the fifth position, and the second elastic portion 520 is used to provide elastic force that moves the push rod mechanism 20 toward the fifth position when the push rod mechanism 20 is in the sixth position. During the process of the push rod mechanism 20 moving between the fifth and sixth positions, one end of the first elastic portion 510 abuts against the bottom portion 212, and the other end of the first elastic portion 510 abuts against the first movable contact 410. When the push rod mechanism 20 is in the sixth position, one end of the second elastic portion 520 abuts against the first movable contact 410 , and the other end of the second elastic portion 520 abuts against the base 10 .

[0102] Of course, in other embodiments, the first elastic portion 510 and the second elastic portion 520 may be separate structures.

[0103] The second elastic portion 520 applies an elastic force to the push rod mechanism 20 when the contact assembly 40 is in the completely disconnected state, and this elastic force causes the push rod mechanism 20 to tend to move to the fifth position. Therefore, when the push rod mechanism 20 needs to move again (i.e., the contact assembly 40 needs to switch to the closed state) and the coil is energized, the push rod mechanism 20 is already subjected to the elastic force applied by the second elastic portion 520 at this point, so the voltage applied to the coil can be reduced, thereby reducing the operating voltage so that it falls within a standard range. The standard range of the operating voltage can be, but is not limited to, 40% to 60% of the rated voltage.

[0104] In addition, the magnitude of the operating voltage of the relay can be flexibly adjusted by adjusting the magnitude of the elastic force provided by the second elastic portion 520. Specifically, when the elastic force provided by the second elastic portion 520 is increased, the operating voltage of the relay correspondingly decreases. When the elastic force provided by the second elastic portion 520 is decreased, the operating voltage of the relay correspondingly increases.

[0105] Furthermore, when the relay has a permanent magnet 340 (i.e., when the relay has a magnetic holding function), the magnitude of the reset voltage of the relay can also be flexibly adjusted by adjusting the magnitude of the elastic force of the first elastic portion 510. Specifically, when the elastic force provided by the first elastic portion 510 is increased, the reset voltage of the relay decreases accordingly. When the elastic force provided by the first elastic portion 510 is decreased, the reset voltage of the relay increases accordingly.

[0106] Therefore, by adjusting the magnitude of the elastic force of the second elastic part 520, the magnitude of the operating voltage can be independently adjusted without affecting the reset voltage, and by adjusting the magnitude of the elastic force of the first elastic part 510, the magnitude of the reset voltage of the relay can be flexibly adjusted without affecting the operating pressure, so that the operating voltage and the reset voltage can be kept in a state where there is no pressure difference. In this case, since the magnetic holding force can be increased or decreased simply by magnetizing or demagnetizing the permanent magnet 340, the operating voltage and the reset voltage can be adjusted synchronously without adjusting for variations in other components of the relay, thereby reducing the requirement for precision of the other components.

[0107] It is understood that the magnitude of the elastic force of the second elastic portion 520 can be adjusted by changing the elastic modulus of the second elastic portion 520. For example, the elastic modulus of the second elastic portion 520 can be adjusted by changing the amount of deformation of the second elastic portion 520 in an unpressurized state to adjust the magnitude of the elastic force of the second elastic portion 520, or by changing the width of the second elastic portion 520, but is not limited to this.

[0108] The operational process by which the push rod 210 drives the second movable contact 430 to contact or separate from the second fixed contact 440 is the same as that of the first contact assembly 40a, and therefore will not be repeated here. Note that the second elastic member 500b has a similar structure to the first elastic member 500a and performs substantially the same function, and therefore will not be repeated here.

[0109] 2 and 9, FIG. 9 shows a schematic diagram of the relative positions of the first orthogonal projection, the second orthogonal projection, and the third orthogonal projection onto an imaginary plane. The first magnetic conductive body 610 has a connecting portion 611 and a suspension portion 612, and the connecting portion 611 is fixedly connected to the base 10. An imaginary plane P perpendicular to the moving direction D3 of the push rod mechanism 20 is defined. The connecting portion 611 has a first orthogonal projection S1 on the imaginary plane P, the suspension portion 612 has a second orthogonal projection S2 on the imaginary plane P, and the movable contacts 410 and 430 have a third orthogonal projection S3 on the imaginary plane P, where the first orthogonal projection S1 does not overlap with the third orthogonal projection S3, and the second orthogonal projection S2 at least partially overlaps with the third orthogonal projection S3.

[0110] The suspended portion 612 is a portion of the first magnetic conductive body 610 that is suspended within the relay and does not contact any part of the relay.

[0111] Since the first orthogonal projection S1 on the imaginary plane P of the connection portion 611 where the first magnetic body 610 is fixedly connected to the base 10 does not overlap with the second orthogonal projection S2 on the imaginary plane P of the movable contactors 410, 430, i.e., the position where the first magnetic body 610 is connected to the base 10 is not located above the movable contactors 410, 430, at least one first magnetic body 610 can be provided on the base 10, thereby each of the at least one contact assembly 40 corresponds to one first magnetic body 610, and each contact assembly 40 is provided with a short-circuit resistant structure.

[0112] As an example, the first magnetic conductive body 610 may have a flat plate structure. Of course, in other embodiments, the first magnetic conductive body 610 may have other regular or irregular shapes.

[0113] As shown in FIG. 2, the connecting portion 611 is inserted into the base 10 along an insertion direction D4, which is perpendicular to the movement direction D3 of the push rod mechanism 20.

[0114] In this embodiment, the connecting portion 611 is inserted into the base 10 along an insertion direction D4 perpendicular to the movement direction D3 of the push rod mechanism 20, and if the first magnetic conductive body 610 has a plate-like structure, the first magnetic conductive body 610 is perpendicular to the movement direction D3 of the push rod mechanism 20. In other words, one end of the first magnetic conductive body 610 having the connecting portion 611 is connected to the base 10, and one end of the first magnetic conductive body 610 having the suspension portion 612 extends along the opposite direction to the insertion direction D4 until the suspension portion 612 at least partially overlaps with the movable contacts 410, 430 in the movement direction D3 of the push rod mechanism 20.

[0115] Attaching the first magnetic conductive body 610 to the base 10 by insertion simplifies the assembly method of the first magnetic conductive body 610. Of course, in other embodiments, the first magnetic conductive body 610 may be connected to the base 10 by a connection method such as adhesive bonding or welding.

[0116] Furthermore, the insertion direction D4 of the first magnetic conductive body 610 is perpendicular to the length direction D1 of the movable contacts 410, 430. In other words, the first magnetic conductive body 610 and the movable contacts 410, 430 are spatially perpendicular to each other.

[0117] It can be seen that when the movable contacts 410, 430 are energized, the magnetic circuit formed on the outer periphery of the movable contacts 410, 430 is aligned along the width of the movable contacts 410, 430. Because the first magnetic conductive body 610 is perpendicular to the movable contacts 410, 430, the magnetic circuit is aligned along the length direction D1 of the suspension portion 612 of the first magnetic conductive body 610, and most of the suspension portion 612 is magnetized, generating a stronger attractive force between the first magnetic conductive body 610 and the movable contacts 410, 430 through which current flows.

[0118] As shown in Figures 2, 10, and 11, Figure 10 shows a cross-sectional view taken along line DD in Figure 2. Figure 11 shows a partially enlarged view of portion X1 in Figure 10. The mounting portion 11 has a first mounting hole 110 penetrating the inner surface and outer surface of the housing 1, and the hole wall of the first mounting hole 110 has a first positioning wall structure 111 and a first gap wall structure 112. The first magnetic conductive body 610 is inserted into the first mounting hole 110, and a portion of the outer wall surface of the first magnetic conductive body 610 abuts against the first positioning wall structure 111. A gap exists between the portion of the outer wall surface of the first magnetic conductive body 610 and the first gap wall structure 112, and the gap is filled with a sealant.

[0119] In this embodiment, the first mounting hole 110 is formed in the base 10 and penetrates the inner surface and bottom surface of the base 10 .

[0120] In the embodiment of the present disclosure, the assembly process of the first magnetic conductive body 610 and the base 10 first achieves initial positioning using the first positioning wall structure 111 of the first mounting hole 110 of the base 10, and then fills the gap between the first magnetic conductive body 610 and the gap wall structure of the first mounting hole 110 with a sealant, thereby completing the sealed assembly of the first magnetic conductive body 610 and the base 10. Meanwhile, a part of the outer wall surface of the first magnetic conductive body 610 abuts against the positioning wall structure 111, thereby achieving the initial positioning of the first magnetic conductive body 610. On the other hand, a gap exists between a portion of the outer wall surface of the first magnetic conductive body 610 and the gap wall structure 112. By utilizing the siphon effect, the sealant can rise from one side of the bottom surface of the base 10 along the gap to one side of the inner surface of the base 10 and up to the opening of the first mounting hole 110, filling the gap and further improving the sealing and positioning strength between the first magnetic conductive body 610 and the base 10. At the same time, the use of a sealant that is more resistant to melting than plastic materials improves the welding heat resistance of the relay product. Compared with the prior art, the embodiments of the present disclosure reduce the adhesive dispensing step, effectively reducing costs and improving assembly efficiency.

[0121] 11 , the first positioning wall structure 111 includes a first positioning wall 113 and a second positioning wall 114, which are arranged opposite to each other along the movement direction D3 of the push rod mechanism 20. The first positioning wall 113 and the second positioning wall 114 abut against the first magnetic conductive body 610, respectively, thereby restricting the degree of freedom of the first magnetic conductive body 610 in the movement direction D3 of the push rod mechanism 20.

[0122] It can be seen that the shapes of the first positioning wall 113 and the second positioning wall 114 are adapted to the outer contour shape of the first magnetic conductive body 610. For example, if the cross-sectional shape of the first magnetic conductive body 610 is rectangular, the first positioning wall 113 and the second positioning wall 114 may be flat. Of course, in other embodiments, if the cross-sectional shape of the connection portion 611 of the first magnetic conductive body 610 is circular, the shapes of the first positioning wall 113 and the second positioning wall 114 may be arc surfaces.

[0123] A portion of the outer wall surface of the first magnetic conductive body 610 is interference-fitted into the first positioning wall structure 111. In the embodiment of the present disclosure, the first magnetic conductive body 610 is interference-fitted into the first positioning wall 113 and the second positioning wall 114, respectively. However, in other embodiments, a zero-gap fit may be adopted between the portion of the outer wall surface of the first magnetic conductive body 610 and the first positioning wall structure 111.

[0124] 2, the fixed contacts 420, 440 are inserted into the base 10 along an insertion direction D4. The fixed contacts 420, 440 and the first magnetic conductive body 610 are all inserted into the base 10 along the insertion direction D4, and the fixed contacts 420, 440 and the first magnetic conductive body 610 can be assembled into the base 10 in the same process, thereby saving assembly time.

[0125] 2, 10, and 12, Fig. 12 is a partial enlarged view of portion X2 in Fig. 10. The base 10 is further provided with a second mounting hole 120 penetrating its inner surface and bottom surface, and a second positioning wall structure 121 and a second gap wall structure 122 are provided on the hole wall of the second mounting hole 120. The fixed contacts 420, 440 are inserted into the second mounting hole 120, and part of the outer wall surface of the fixed contacts 420, 440 abuts against the second positioning wall structure 121. A gap is formed between part of the outer wall surface of the fixed contacts 420, 440 and the second gap wall structure 122, and this gap is filled with a sealant.

[0126] The assembly process of the fixed contacts 420, 440 and the base 10 can be referred to as the assembly process of the first magnetic conductive body 610 and the base 10, that is, first the fixed contacts 420, 440 and the second positioning wall structure 121 of the second mounting hole 120 achieve initial positioning, and then fill the gap between the fixed contacts 420, 440 and the second gap wall structure 122 with sealant.

[0127] From the above, it can be seen that the fixed contacts 420, 440 and the first magnetic conductive body 610 can be assembled to the base 10 in the same adhesive dispensing process, which greatly improves assembly efficiency.

[0128] The second positioning wall structure 121 includes a third positioning wall 123 and a fourth positioning wall 124, which are arranged opposite to each other along the movement direction D3 of the push rod mechanism 20. The third positioning wall 123 and the fourth positioning wall 124 abut against the fixed contacts 420 and 440, respectively, thereby restricting the degree of freedom of the fixed contacts 420 and 440 in the movement direction D3 of the push rod mechanism 20.

[0129] It can be seen that the shapes of the third positioning wall 123 and the fourth positioning wall 124 are adapted to the outer contour shape of the extractor pin of the fixed contact. For example, if the cross-sectional shape of the extractor pin of the fixed contact is rectangular, the third positioning wall 123 and the fourth positioning wall 124 may be flat. Of course, in other embodiments, if the cross-sectional shape of the extractor pin of the fixed contact is circular, the shapes of the third positioning wall 123 and the fourth positioning wall 124 may be arc surfaces.

[0130] A portion of the outer wall surface of the fixed contacts 420, 440 is interference-fitted into the second positioning wall structure 121. In the embodiment of the present disclosure, a portion of the outer wall surface of the fixed contacts 420, 440 is interference-fitted into the third positioning wall 123 and the fourth positioning wall 124, respectively. Of course, in other embodiments, a zero-gap fit may be adopted between the portion of the outer wall surface of the fixed contacts 420, 440 and the second positioning wall structure 121.

[0131] As described above, the initial positioning of the first magnetic conductive body 610 and the fixed contacts 420, 440 is achieved by abutting a portion of the outer wall surface of the first magnetic conductive body 610 against the first positioning wall structure 111 and abutting the fixed contacts 420, 440 against the second positioning wall structure 121 (no adhesive dispensing is required during the initial positioning process). Then, adhesive is dispensed from one side of the bottom surface of the base 10 toward the gap between the first magnetic conductive body 610 and the first gap wall structure 112 and the gap between the fixed contacts 420, 440 and the second gap wall structure 122. At the same time, adhesive can also be dispensed into the gap between the outer cover and the base 10.

[0132] From the above, it can be seen that in the embodiment of the present disclosure, adhesive can be dispensed in one adhesive dispensing direction into the gap between the first magnetic body 610 and the base 10, the gap between the fixed contacts 420, 440 and the base 10, and the gap between the outer cover and the base 10, thereby significantly improving adhesive dispensing efficiency. Of course, when dispensing adhesive, adhesive can also be dispensed into the gap between the coil pull-out pin and the base 10 and the gap between the auxiliary contact pull-out pin and the base 10 at the same time.

[0133] As shown in FIGS. 5, 6 and 13, the relay further includes a second magnetic conductive body 620, which corresponds to the first magnetic conductive body 610.

[0134] By fixedly connecting the second magnetic body 620 to one side of the movable contacts 410, 430 facing away from the first magnetic body 610, a magnetic circuit is formed between the corresponding first magnetic body 610 and second magnetic body 620 in the width direction D2 of the movable contacts 410, 430.

[0135] The correspondence between the second magnetic conductive bodies 620 and the first magnetic conductive bodies 610 is understood to mean that the number of the second magnetic conductive bodies 620 and the number of the first magnetic conductive bodies 610 are the same, and the positions of the second magnetic conductive bodies 620 and the first magnetic conductive bodies 610 correspond to each other. In this embodiment, the number of the first magnetic conductive bodies 610 and the number of the second magnetic conductive bodies 620 are both two, but this is not limiting.

[0136] When both ends of the movable contacts 410, 430 contact the fixed contacts 420, 440, the second magnetic conductive body 620, which moves together with the movable contacts 410, 430, approaches or contacts the first magnetic conductive body 610, thereby forming a magnetic circuit surrounding the movable contacts 410, 430 between the first magnetic conductive body 610 and the second magnetic conductive body 620. When a short-circuit current passes through the movable contacts 410, 430, an attractive force is generated between the first magnetic conductive body 610 and the second magnetic conductive body 620 in the direction of the contact pressure, and this attractive force is superimposed on the contact pressure to generate a larger contact pressure, which can resist the electromechanical repulsive force generated by the short-circuit current between the movable contacts of the movable contacts 410, 430 and the fixed contacts of the fixed contacts 420, 440, and ensure that the movable contacts of the movable contacts 410, 430 and the fixed contacts of the fixed contacts 420, 440 do not pop off.

[0137] In addition, the first magnetic conductive body 610 and the second magnetic conductive body 620 are arranged on both sides of the movable contacts 410, 430, respectively. When the movable contacts 410, 430 are energized, the attractive force between the first magnetic conductive body 610 and the second magnetic conductive body 620 is a direct electromagnetic attractive force, which is greater than the attractive force between the first magnetic conductive body 610 and the movable contacts 410, 430 after only the first magnetic conductive body 610 is magnetized. Therefore, it can more effectively resist the electromechanical repulsive force generated by the short-circuit current between the movable contacts 410, 430 and the fixed contacts 420, 440, and effectively improve the short-circuit resistance capability.

[0138] The second magnetic conductive body 620 may be fixedly connected to the movable contacts 410, 430 by, but is not limited to, caulking.

[0139] The first magnetic conductive body 610 and the second magnetic conductive body 620 can be made from materials such as iron, cobalt, nickel, and alloys thereof.

[0140] The first magnetic conductive body 610 may be linearly shaped, and the second magnetic conductive body 620 may be U-shaped. The second magnetic conductive body 620 covers the movable contacts 410, 430 along the width direction D2 of the movable contacts 410, 430.

[0141] 3, along the axial direction of the rod portion 211 (i.e., the movement direction D3 of the push rod mechanism 20), no portion of the push rod 210 is housed between the second magnetic conductive body 620 and the corresponding first magnetic conductive body 610. Since no portion of the push rod 210 is housed between the corresponding second magnetic conductive body 620 and first magnetic conductive body 610, the push rod 210 is prevented from affecting the magnetic field strength between the second magnetic conductive body 620 and the first magnetic conductive body 610, and the short-circuit resistance capability of the relay is ensured.

[0142] 14 and 15, which respectively show schematic views from two different viewpoints after assembling the movable contacts 410, 430 and the second magnetic conductive body 620 according to the second embodiment of the present disclosure. Similarities between the second embodiment and the first embodiment will not be repeated here, but the differences between the second embodiment and the first embodiment are as follows.

[0143] The second magnetic conductive body 620 includes at least two sub-magnetic bodies 621, each of which is U-shaped and includes a base portion 622 and two side portions 623, which are connected to the base portion 622. The movable contactors 410, 430 are provided with at least one perforation 414, and the at least two sub-magnetic bodies 621 are each connected to one side of the movable contactors 410, 430 facing away from the first magnetic conductive body 610, and the side portions 623 of the at least two sub-magnetic bodies 621 pass through the at least one perforation 414 and come close to or into contact with the first magnetic conductive body 610 through the perforation 414, thereby forming at least two independent magnetic conductive circuits in the width direction D2 of the movable contactors 410, 430. By utilizing the increased magnetic pole surface at the position of the corresponding perforation 414 by at least two independent magnetic circuits, when a large fault current flows through the movable contacts 410, 430, an attractive force in the contact pressure direction is generated to resist the electromotive repulsive force generated by the fault current between the movable contacts 410, 430 and the fixed contacts 420, 440.

[0144] The so-called two independent magnetic circuits means that the two magnetic circuits do not interfere with each other, that is, there is no situation in which the magnetic fluxes cancel each other out.

[0145] In this embodiment, one perforation 414 is provided in the movable contactors 410, 430, and this perforation 414 is arranged in the intermediate region between the two movable contacts of the movable contactors 410, 430. The second magnetic conductive body 620 includes two sub-magnetic conductive bodies 621, and the two sub-magnetic conductive bodies 621 share one first magnetic conductive body 610 to form two magnetic conductive circuits.

[0146] The two U-shaped sub-magnetic conductors 621 are arranged side by side along the width direction D2 of the movable contacts 410, 430, and one side portion 623 of each sub-magnetic conductor 621 is inserted into the perforation 414 of the movable contacts 410, 430.

[0147] In this embodiment, the top surface of the side portion 623 of each magnetic sub-conductor 621 is substantially flush with the surface of one side of the movable contacts 410 and 430 facing the fixed contacts 420 and 440 .

[0148] In the embodiment of the present disclosure, the two U-shaped sub-magnetic conductive bodies 621 have a total of four side portions 623, and the top surfaces of the four side portions 623 cooperate with the first magnetic conductive body 610. Compared with the case where there is only one magnetic conductive circuit (only two magnetic pole faces), on the premise that the structural characteristics of the second magnetic conductive body 620 do not change, the embodiment of the present disclosure is equivalent to adding two magnetic pole faces (the magnetic pole faces at the positions of the perforations 414 correspond to increased magnetic pole faces), which improves magnetic efficiency, increases magnetic attraction force, and significantly improves short-circuit resistance.

[0149] There is a gap between the two sides 623 located in one perforation 414. This prevents the magnetic fluxes of the two magnetic conductive circuits from canceling each other out.

[0150] Of course, in other embodiments, the number of sub-conductive bodies 621 may be three or more.

[0151] It is understood that each example / embodiment provided in the present disclosure can be combined with each other without causing a contradiction, and will not be described one by one here.

[0152] Furthermore, in the prior art, the connection structure between the push rod and the movable contactor is not sufficiently stable, resulting in problems such as the movable contactor moving unstably during the process of contact separation. The embodiments of the present disclosure provide a relay that solves the problem of unstable movement of the movable contactor in the prior art.

[0153] A relay according to an embodiment of the present disclosure includes a first contact assembly and a push rod, the first contact assembly including a first fixed contact and a first movable contact. The push rod is used to move the first movable contact into or out of contact with the first fixed contact. The push rod includes a rod portion, a bottom portion, a first side portion, and a second side portion, the bottom portion being connected to one axial end of the rod portion, the first side portion and the second side portion being both connected to the bottom and arranged opposite each other along the length of the first movable contact. A first through hole is provided in the first side portion, and a second through hole is provided in the second side portion, and the first movable contactor passes through the first through hole and the second through hole. The first movable contactor is movable between a first position and a second position relative to the first through hole and the second through hole along the axial direction of the rod portion. At the first position, the first movable contactor abuts against the hole wall of the first through hole and the hole wall of the second through hole.

[0154] According to some embodiments of the present disclosure, the device further includes a first elastic member, which is provided between the first movable contact and the bottom and is used to apply an elastic force to the first movable contact to move it toward the first position.

[0155] According to some embodiments of the present disclosure, a first movable contact is provided at each end of the first movable contactor in the longitudinal direction, one of the first movable contacts being located on one side of the first side portion facing away from the second side portion, and the other of the first movable contacts being located on one side of the second side portion facing away from the first side portion.

[0156] According to some embodiments of the present disclosure, a first positioning portion and a second positioning portion are protruded from one side of the first movable contact, the first positioning portion corresponding to the position of the first side portion, and the second positioning portion corresponding to the position of the second side portion.

[0157] In the length direction of the first movable contactor, the first movable contactor is disposed at a predetermined position on the push rod via the first positioning portion and the second positioning portion.

[0158] According to some embodiments of the present disclosure, the first side portion has a first stop surface on one side facing the second side portion, and the second side portion has a second stop surface on one side facing the first side portion.

[0159] The first positioning portion abuts against the first stopper surface, and the second positioning portion abuts against the second stopper surface.

[0160] According to some embodiments of the present disclosure, the first positioning portion and the second positioning portion are provided to protrude from a surface of one side of the first movable contactor facing the first fixed contactor.

[0161] According to some embodiments of the present disclosure, the relay further includes a second contact assembly and a second elastic member, the second contact assembly including a second movable contact and a second fixed contact, the push rod further includes a spacer portion, a third side portion, and a fourth side portion, the third side portion is connected to one end of the first side portion facing the bottom, the fourth side portion is connected to one end of the second side portion facing the bottom, the spacer portion is provided between the third side portion and the fourth side portion, a third through hole is provided in the third side portion, a fourth through hole is provided in the fourth side portion, the second movable contact passes through the third through hole and the fourth through hole, and the second movable contact is movable between a third position and a fourth position along the axial direction of the rod portion relative to the third through hole and the fourth through hole. In the third position, the second movable contactor abuts against the hole wall of the third through hole and the hole wall of the fourth through hole, respectively, and the second elastic member is provided between the second movable contactor and the spacer portion and is used to apply an elastic force to the second movable contactor to move it toward the third position.

[0162] According to some embodiments of the present disclosure, the bottom portion, the spacer portion, the first side portion, and the second side portion surround and form a cavity, and the first through hole and the second through hole are both connected to the cavity, and the third through hole and the fourth through hole are not connected to the cavity.

[0163] According to some embodiments of the present disclosure, second movable contacts are provided at both longitudinal ends of the second movable contactor, one of the second movable contacts being located on one side of the third side portion facing away from the fourth side portion, and the other of the second movable contacts being located on one side of the fourth side portion facing away from the third side portion.

[0164] According to some embodiments of the present disclosure, a third positioning portion and a fourth positioning portion are protruded from one side of the second movable contactor, the third positioning portion corresponds to the position of the third side portion, and the fourth positioning portion corresponds to the position of the fourth side portion, and in the longitudinal direction of the second movable contactor, the second movable contactor is positioned at a predetermined position on the push rod via the third positioning portion and the fourth positioning portion.

[0165] According to some embodiments of the present disclosure, the third side portion has a third stopper surface on one side facing the fourth side portion, and the fourth side portion has a fourth stopper surface on one side facing the third side portion, and the third positioning portion abuts against the third stopper surface, and the fourth positioning portion abuts against the fourth stopper surface.

[0166] According to some embodiments of the present disclosure, the third positioning portion and the fourth positioning portion are provided to protrude from a surface of one side of the second movable contact facing the second fixed contact.

[0167] According to some embodiments of the present disclosure, the rod portion, the bottom portion, the first side portion, and the second side portion are of unitary construction.

[0168] An embodiment of the above disclosure has at least the following advantages or beneficial effects.

[0169] In the relay of the embodiment of the present disclosure, the position where the hole wall of the first through hole abuts against the first movable contactor corresponds to the point of action of one force, and the position where the hole wall of the second through hole abuts against the first movable contactor corresponds to the point of action of the other force. By setting two points of action and arranging the two points of action along the length of the first movable contactor, the area over which the force received by the push rod from the first movable contactor acts is increased, and the push rod moves the first movable contactor more smoothly.

[0170] Hereinafter, embodiments of the present disclosure will be described in detail with reference to the accompanying drawings.

[0171] 18 to 20, Fig. 18 shows a top view of a relay according to an embodiment of the present disclosure with the top cover omitted, Fig. 19 shows a cross-sectional view taken along line EE in Fig. 18, and Fig. 20 shows a cross-sectional view taken along line FF in Fig. 19. The relay according to the embodiment of the present disclosure includes a base 10, a push rod mechanism 20, a magnetic circuit mechanism 30, and a contact assembly 40. The push rod mechanism 20, the magnetic circuit mechanism 30, and the contact assembly 40 are arranged on the base 10, and the magnetic circuit mechanism 30 controls the contacts of the contact assembly 40 to come into contact or separate from each other via the push rod mechanism 20.

[0172] The magnetic circuit mechanism 30 includes a yoke structure 310, a bobbin 320, and a coil 330. The yoke structure 310 defines a chamber, and the bobbin 320 and the coil 330 are both disposed within the chamber of the yoke structure 310. The coil 330 is wound around the outer periphery of the bobbin 320 to form a magnetic control circuit. The bobbin 320 has a central hole 321 in the direction in which the contacts of the contact assembly 40 make contact or separate, and the central hole 321 is used to pass one end of the push rod mechanism 20 through.

[0173] For example, the yoke structure 310 includes a yoke plate 311 and a U-shaped yoke 312, which are connected to each other to form a ring shape. The yoke plate 311 has a through hole 3111 through which the push rod mechanism 20 passes.

[0174] Of course, in other embodiments, the yoke structure 310 may comprise a cylindrical yoke and a yoke plate 311, which are connected together to form a ring shape.

[0175] The magnetic circuit mechanism 30 further includes two permanent magnets 340, which are disposed on the bobbin 320 and located on either side of the direction of movement of the push rod mechanism 20. The two permanent magnets 340 form a magnetic holding magnetic circuit structure, which helps reduce electricity costs, extend service life, and improve stability.

[0176] Of course, in other embodiments, permanent magnet 340 may not be provided.

[0177] 20 , the push rod mechanism 20 is movable between a fifth position and a sixth position relative to the base 10. When the push rod mechanism 20 is in the fifth position, the contact assembly 40 is in a fully closed state, and when the push rod mechanism 20 is in the sixth position, the contact assembly 40 is in a fully disconnected state. The push rod mechanism 20 includes a push rod 210 and an iron core 220, which is connected to the push rod 210. The iron core 220 can move in the direction of contact or separation of the contacts by the action of a magnetic control circuit formed by a coil 330, which further moves the push rod 210 to control the contact or separation of the contacts of the contact assembly 40.

[0178] The term "fully closed" refers to the state of the contact assembly 40 when the movable contact and the fixed contact of the contact assembly 40 have come into contact and then completed the overtravel. The term "disconnected" refers to the state of the contact assembly 40 when the contact gap is at its maximum after the movable contact and the fixed contact of the contact assembly 40 have been disconnected.

[0179] Continuing to refer to Figures 18 to 20, the contact assembly 40 comprises movable contacts 410, 430 and fixed contacts 420, 440, the fixed contacts 420, 440 being fixedly attached to the base 10, and the movable contacts 410, 430 being attached to the push rod mechanism 20 and moving together with the push rod mechanism 20.

[0180] In this embodiment, the contact assemblies 40 are divided into two groups: a first contact assembly 40a and a second contact assembly 40b. The first contact assembly 40a and the second contact assembly 40b are arranged along the direction of movement of the push rod mechanism 20. Furthermore, the first contact assembly 40a is close to the magnetic circuit mechanism 30, and the second contact assembly 40b is far from the magnetic circuit mechanism 30.

[0181] The first contact assembly 40a includes a first movable contactor 410 and two first fixed contactors 420. The second contact assembly 40b includes a second movable contactor 430 and two second fixed contactors 440. Both ends of the first movable contactor 410 can be in contact with or spaced apart from the two first fixed contactors 420, respectively, and both ends of the second movable contactor 430 can be in contact with or spaced apart from the two second fixed contactors 440, respectively.

[0182] Of course, in other embodiments, the contact assemblies 40 may be in one group or other quantities.

[0183] Both ends of the movable contacts 410, 430 in the longitudinal direction function as movable contacts, and the movable contacts may protrude from other parts of the movable contacts 410, 430 or may be flush with other parts. The parts of the fixed contacts 420, 440 that come into contact with the movable contacts function as fixed contacts, and the fixed contacts may protrude from other parts of the fixed contacts 420, 440 or may be flush with other parts.

[0184] As an example, the first movable contactor 410 includes a first movable spring body 416 and a first movable contact 411, the first movable contact 411 and the first movable spring body 416 having separate structures, and the first movable contact 411 and the first movable spring body 416 can be connected by crimping, but this is not limitative. The first fixed contactor 420 includes a first fixed spring body 421 and a first fixed contact 422, the first fixed contact 422 and the first fixed spring body 421 having separate structures, and the first fixed contact 422 and the first fixed spring body 421 can be connected by crimping, but this is not limitative.

[0185] The second movable contactor 430 includes a second movable spring body 434 and a second movable contact 431, the second movable contact 431 and the second movable spring body 434 having separate structures, and the second movable contact 431 and the second movable spring body 434 can be connected by crimping, but this is not limited to this. The second fixed contactor 440 includes a second fixed spring body 441 and a second fixed contact 442, the second fixed contact 442 and the second fixed spring body 441 having separate structures, and the second fixed contact 442 and the second fixed spring body 441 can be connected by crimping, but this is not limited to this.

[0186] Of course, in other embodiments, the first movable contact 411 and the first movable spring body 416 may be an integral structure, the first fixed contact 422 and the first fixed spring body 421 may be an integral structure, the second movable contact 431 and the second movable spring body 434 may be an integral structure, or the second fixed contact 442 and the second fixed spring body 441 may be an integral structure.

[0187] As shown in FIGS. 21 to 23, FIG. 21 shows a schematic diagram of the push rod 210. FIG. 22 shows a schematic front view of the push rod 210, the contact assembly 40, and the yoke plate 311 after they are assembled. FIG. 23 shows a schematic perspective view of the push rod 210, the contact assembly 40, and the yoke plate 311 after they are assembled. The push rod 210 is used to move the first movable contact 410 into contact with or away from the first fixed contact 420. The push rod 210 includes a rod portion 211, a bottom portion 212, a first side portion 213, and a second side portion 214. The rod portion 211 is movably inserted into a through-hole 3111 of the yoke plate 311, and the iron core 220 is connected to the rod portion 211. The bottom portion 212 is connected to one axial end of the rod portion 211, and the first side portion 213 and the second side portion 214 are both connected to the bottom portion 212 and are arranged on opposite sides of each other along the longitudinal direction D1 of the first movable contactor 410. A first through hole 2131 is provided in the first side portion 213, and a second through hole 2141 is provided in the second side portion 214, and the first movable contactor 410 passes through the first through hole 2131 and the second through hole 2141. The first movable contactor 410 is movable between a first position and a second position relative to the first through hole 2131 and the second through hole 2141 along the axial direction D3 of the rod portion 211 (i.e., the movement direction of the push rod 210). In the first position, the first movable contact 410 abuts against the hole wall of the first through-hole 2131 and the hole wall of the second through-hole 2141 (as shown in FIGS. 22 and 23).

[0188] The relay further comprises an elastic assembly including a first elastic member 500a and a second elastic member 500b, the first elastic member 500a being disposed between the first movable contact 410 and the bottom 212 and being used to apply an elastic force to the first movable contact 410 to move it towards the first position.

[0189] When the first contact assembly 40a of the relay is closing, the push rod 210 drives the first movable contact 410 to move toward the first fixed contact 420. Before the first movable contact 410 and the first fixed contact 420 come into contact, the first elastic member 500a causes the first movable contact 410 to abut against the wall of the first through hole 2131 and the wall of the second through hole 2141, respectively, and to be in a first position. After the first movable contact 410 and the first fixed contact 420 come into contact, the first fixed contact 420 is fixedly attached to the base 10, so the first movable contact 410 is stopped by the first fixed contact 420 and cannot move any further. At this time, the push rod 210 continues to move, and the first elastic member 500a is gradually compressed until the overtravel is completed. At this time, the first movable contactor 410 is in a second position relative to the first through-hole 2131 and the second through-hole 2141.

[0190] When the first contact assembly 40a of the relay is separated, the process of the push rod 210 moving away from the first fixed contact 420 is divided into two stages. In the first stage, the push rod 210 moves, but the first movable contact 410 does not move with the push rod 210. In the first stage, the first movable contact 410 moves from the second position to the first position relative to the first through hole 2131 and the second through hole 2141. At the start of the second stage, the first movable contact 410 has already moved to the first position relative to the first through hole 2131 and the second through hole 2141, and at this time, the first movable contact 410 is in contact with the hole walls of the first through hole 2131 and the hole walls of the second through hole 2141, respectively. Thereafter, the first movable contactor 410 moves accordingly due to the movement of the push rod 210, and the first movable contactor 410 is separated from the first fixed contactor 420. In the second stage, when the push rod 210 moves the first movable contactor 410, the first movable contactor 410 abuts against the hole wall of the first through hole 2131 and the hole wall of the second through hole 2141, respectively. Therefore, the push rod 210 acts on the first movable contactor 410 via the first side portion 213 and the second side portion 214, which corresponds to the first movable contactor 410 being separated from the first fixed contactor 420.

[0191] From the above, it can be seen that the position where the hole wall of the first through hole 2131 abuts against the first movable contactor 410 corresponds to the point of application of one force, and the position where the hole wall of the second through hole 2141 abuts against the first movable contactor 410 corresponds to the point of application of the other force. By setting two points of application and arranging the two points of application along the length direction D1 of the first movable contactor 410, the area over which the tension force applied to the first movable contactor 410 from the push rod 210 acts becomes larger, and the push rod 210 moves the first movable contactor 410 more smoothly.

[0192] 22 , first movable contacts 411 are provided at both ends of the first movable contactor 410 in the longitudinal direction D1, one first movable contact 411 being located on one side of the first side portion 213 facing away from the second side portion 214, and the other first movable contact 411 being located on one side of the second side portion 214 facing away from the first side portion 213. In other words, the points of action of the two forces acting on the first movable contactor 410 from the first side portion 213 and the second side portion 214 are located between the two first movable contacts 411 of the first movable contactor 410.

[0193] As shown in Figures 24 and 25, Figure 24 is a schematic side view of Figure 22. Figure 25 is a cross-sectional view taken along line GG in Figure 24. A first positioning portion 412 and a second positioning portion 413 are protruded from one side of the first movable contactor 410, with the first positioning portion 412 corresponding to the position of the first side portion 213 and the second positioning portion 413 corresponding to the position of the second side portion 214. In the longitudinal direction D1 of the first movable contactor 410, the first movable contactor 410 is positioned at a predetermined position on the push rod 210 by the first positioning portion 412 and the second positioning portion 413.

[0194] In this embodiment, by providing the first positioning portion 412 and the second positioning portion 413 on the first movable contactor 410, the first movable contactor 410 can be attached to a predetermined position on the push rod 210 in its longitudinal direction D1, thereby preventing relative shaking between the first movable contactor 410 and the first side portion 213 and the second side portion 214, and further improving the stability of the first movable contactor 410 when it moves.

[0195] Specifically, in the axial direction D3 of the rod portion 211, the first elastic member 500a is disposed between the bottom portion 212 and the first movable contactor 410, and the first movable contactor 410 is always subjected to the elastic force of the first elastic member 500a, and therefore abuts against the hole wall of the first through hole 2131 and the hole wall of the second through hole 2141. Therefore, in the axial direction D3 of the rod portion 211, no relative swing occurs between the first movable contactor 410 and the push rod 210.

[0196] In the length direction D1 of the first movable contactor 410, by providing the first positioning portion 412 and the second positioning portion 413, relative vibration does not occur between the first movable contactor 410 and the push rod 210.

[0197] By limiting the size of the first through hole 2131 and the second through hole 2141 in the width direction D2 of the first movable contactor 410, the size of the first through hole 2131 and the second through hole 2141 in the width direction D2 of the first movable contactor 410 matches the width of the first movable contactor 410, thereby avoiding the occurrence of large gaps between the first movable contactor 410 and the hole walls of the first and second through holes.

[0198] 25 , a first stopper surface 2132 is provided on one side of the first side portion 213 facing the second side portion 214, and a second stopper surface 2142 is provided on one side of the second side portion 214 facing the first side portion 213. The first positioning portion 412 abuts against the first stopper surface 2132, and the second positioning portion 413 abuts against the second stopper surface 2142.

[0199] Of course, in other embodiments, there may be a gap between the first positioning portion 412 and the first stopper surface 2132, and there may be a gap between the second positioning portion 413 and the second stopper surface 2142. Note that the sizes of the above two gaps should not be too large. The size of the gap needs to be large enough to allow the first positioning portion 412 and the second positioning portion 413 of the first movable contactor 410 to be easily installed between the first side portion 213 and the second side portion 214, and to prevent relative shaking between the first movable contactor 410 and the push rod 210 along the longitudinal direction D1 of the first movable contactor 410.

[0200] The first positioning portion 412 and the second positioning portion 413 are provided to protrude from the surface of one side of the first movable contact 410 facing the first fixed contact 420 .

[0201] 20 , 22 , 26 , and 27 , the first elastic member 500a includes a first elastic portion 510 and a second elastic portion 520, which are integrally formed. The first movable contact 410 is attached to the push rod 210 of the push rod mechanism 20 via the first elastic portion 510. The first elastic portion 510 is used to provide overtravel contact pressure when the push rod mechanism 20 is in the fifth position, and the second elastic portion 520 is used to provide elastic force that moves the push rod mechanism 20 toward the fifth position when the push rod mechanism 20 is in the sixth position. During the process of the push rod mechanism 20 moving between the fifth and sixth positions, one end of the first elastic portion 510 abuts against the bottom portion 212, and the other end of the first elastic portion 510 abuts against the first movable contact 410. When the push rod mechanism 20 is in the sixth position, one end of the second elastic portion 520 abuts against the first movable contact 410 , and the other end of the second elastic portion 520 abuts against the base 10 .

[0202] Of course, in other embodiments, the first elastic portion 510 and the second elastic portion 520 may be separate structures.

[0203] The second elastic portion 520 applies an elastic force to the push rod mechanism 20 when the contact assembly 40 is in the completely disconnected state, and this elastic force causes the push rod mechanism 20 to tend to move to the fifth position. Therefore, when the push rod mechanism 20 needs to move again (i.e., the contact assembly 40 needs to switch to the closed state) and the coil is energized, the push rod mechanism 20 is already subjected to the elastic force applied by the second elastic portion 520 at this point, so the voltage applied to the coil can be reduced, thereby reducing the operating voltage so that it falls within a standard range. The standard range of the operating voltage can be, but is not limited to, 40% to 60% of the rated voltage.

[0204] In addition, the magnitude of the operating voltage of the relay can be flexibly adjusted by adjusting the magnitude of the elastic force provided by the second elastic portion 520. Specifically, when the elastic force provided by the second elastic portion 520 is increased, the operating voltage of the relay correspondingly decreases. When the elastic force provided by the second elastic portion 520 is decreased, the operating voltage of the relay correspondingly increases.

[0205] Furthermore, when the relay has a permanent magnet 340 (i.e., when the relay has a magnetic holding function), the magnitude of the reset voltage of the relay can also be flexibly adjusted by adjusting the magnitude of the elastic force of the first elastic portion 510. Specifically, when the elastic force provided by the first elastic portion 510 is increased, the reset voltage of the relay decreases accordingly. When the elastic force provided by the first elastic portion 510 is decreased, the reset voltage of the relay increases accordingly.

[0206] Therefore, by adjusting the magnitude of the elastic force of the second elastic member 520, the magnitude of the operating voltage can be independently adjusted without affecting the reset voltage, and by adjusting the magnitude of the elastic force of the first elastic member 510, the magnitude of the reset voltage of the relay can be flexibly adjusted without affecting the operating pressure, and the operating voltage and the reset voltage can be kept in a state where there is no pressure difference. In this case, since the magnetic holding force can be increased or decreased simply by magnetizing or demagnetizing the permanent magnet 340, the operating voltage and the reset voltage can be adjusted synchronously without adjusting for variations in other components of the relay, and the requirements for precision of the other components are reduced.

[0207] It is understood that the magnitude of the elastic force of the second elastic portion 520 can be adjusted by changing the elastic modulus of the second elastic portion 520. For example, the elastic modulus of the second elastic portion 520 can be adjusted by changing the amount of deformation of the second elastic portion 520 in an unpressurized state to adjust the magnitude of the elastic force of the second elastic portion 520, or by changing the width of the second elastic portion 520, but is not limited to this.

[0208] 21 to 23 , the second contact assembly 40b and the first contact assembly 40a are arranged along the axial direction D3 of the rod portion 211. The push rod 210 further includes a spacer portion 215, a third side portion 216, and a fourth side portion 217, where the third side portion 216 is connected to one end of the first side portion 213 facing away from the bottom portion 212 and the fourth side portion 217 is connected to one end of the second side portion 214 facing away from the bottom portion 212, and the spacer portion 215 is provided between the third side portion 216 and the fourth side portion 217. A third through hole 2161 is provided in the third side portion 216, and a fourth through hole 2171 is provided in the fourth side portion 217, and the second movable contactor 430 passes through the third through hole 2161 and the fourth through hole 2171. The third through hole 2161 is located on one side of the rod portion 211 of the spacer portion 215 along the axial direction D3, and the first through hole 2131 is located on the other side of the rod portion 211 of the spacer portion 215 along the axial direction D3. The fourth through hole 2171 is located on one side of the rod portion 211 of the spacer portion 215 along the axial direction D3, and the second through hole 2141 is located on the other side of the rod portion 211 of the spacer portion 215 along the axial direction D3. The second movable contactor 430 is movable between a third position and a fourth position with respect to the third through hole 2161 and the fourth through hole 2171 along the axial direction D3 of the rod portion 211. At the third position, the second movable contactor 430 abuts against the hole walls of the third through hole 2161 and the fourth through hole 2171, respectively.

[0209] The second elastic member 500b is provided between the second movable contact 430 and the spacer portion 215, and is used to apply an elastic force to the second movable contact 430 to move it toward the third position.

[0210] The operational process in which the push rod 210 drives the second movable contact 430 to contact or separate from the second fixed contact 440 is the same as that of the first contact assembly 40a, and therefore will not be repeated here. Note that the second elastic member 500b has a similar structure to the first elastic member 500a and performs substantially the same function, and therefore will not be repeated here.

[0211] Therefore, the position where the hole wall of the third through hole 2161 abuts against the second movable contactor 430 corresponds to the point of application of one force, and the position where the hole wall of the fourth through hole 2171 abuts against the second movable contactor 430 corresponds to the point of application of the other force. By setting two points of application of forces and arranging the two points of application of forces along the longitudinal direction D1 of the second movable contactor 430, the area over which the tension force applied to the second movable contactor 430 from the push rod 210 acts becomes larger, and the push rod 210 moves the second movable contactor 430 more smoothly.

[0212] 21 , the bottom portion 212, the spacer portion 215, the first side portion 213, and the second side portion 214 are enclosed together to form a cavity 218, and the first through-hole 2131 and the second through-hole 2141 are both connected to the cavity 218, while the third through-hole 2161 and the fourth through-hole 2171 are not connected to the cavity 218. The cavity 218 can be used to accommodate a short-circuit resistant structure. As shown in FIG. 22 , the short-circuit resistant structure can include a first magnetic conductive body 610 and a second magnetic conductive body 620, and the first magnetic conductive body 610 and the second magnetic conductive body 620 are both disposed in the cavity 218. The first magnetic conductive body 610 is fixedly connected to the base 10, the second magnetic conductive body 620 is fixedly connected to the first movable contactor 410, and the second magnetic conductive body 620 is arranged on one side of the first movable contactor 410 facing away from the first magnetic conductive body 610. A magnetic circuit is formed between the first magnetic conductive body 610 and the second magnetic conductive body 620. When a short-circuit current flows through the first movable contactor 410, an attractive force is generated between the first magnetic conductive body 610 and the second magnetic conductive body 620 in the direction of the contact pressure. This attractive force is superimposed on the contact pressure to generate a larger contact pressure, which can resist the electromechanical repulsive force generated by the short-circuit current between the movable contactor of the first movable contactor 410 and the fixed contactor of the first fixed contactor 420, and ensure that the movable contactor of the first movable contactor 410 and the fixed contactor of the first fixed contactor 420 do not pop off.

[0213] 22 , second movable contacts 431 are provided at both ends of the second movable contactor 430 in the longitudinal direction D1, one second movable contact 431 being located on one side of the third side portion 216 facing away from the fourth side portion 217, and the other second movable contact 431 being located on one side of the fourth side portion 217 facing away from the third side portion 216. In other words, the points of action of the two forces acting on the second movable contactor 430 from the third side portion 216 and the fourth side portion 217 are located between the two second movable contacts 431 of the second movable contactor 430.

[0214] 24 and 25, a third positioning portion 432 and a fourth positioning portion 433 are protruded from one side of the second movable contactor 430, with the third positioning portion 432 corresponding to the position of the third side portion 216 and the fourth positioning portion 433 corresponding to the position of the fourth side portion 217. In the length direction D1 of the second movable contactor 430, the second movable contactor 430 is provided at a predetermined position on the push rod 210 by the third positioning portion 432 and the fourth positioning portion 433.

[0215] In this embodiment, by providing the second movable contactor 430 with the third positioning portion 432 and the fourth positioning portion 433, the second movable contactor 430 can be attached to a predetermined position on the push rod 210 in its longitudinal direction D1, thereby preventing relative shaking between the second movable contactor 430 and the third side portion 216 and the fourth side portion 217, and further improving the stability of the second movable contactor 430 when it moves.

[0216] Specifically, in the axial direction D3 of the rod portion 211, the second elastic member 500b is disposed between the spacer portion 215 and the second movable contactor 430, and the second movable contactor 430 is constantly subjected to the elastic force of the second elastic member 500b, so that the second movable contactor 430 abuts against the hole wall of the third through hole 2161 and the hole wall of the fourth through hole 2171. Therefore, in the axial direction D3 of the rod portion 211, no relative swing occurs between the second movable contactor 430 and the push rod 210.

[0217] By providing the third positioning portion 432 and the fourth positioning portion 433 in the length direction D1 of the second movable contactor 430, relative shaking between the second movable contactor 430 and the push rod 210 does not occur.

[0218] By limiting the size of the third through hole 2161 and the fourth through hole 2171 in the width direction D2 of the second movable contactor 430, the size of the third through hole 2161 and the fourth through hole 2171 in the width direction D2 of the second movable contactor 430 matches the width of the second movable contactor 430, thereby avoiding the occurrence of large gaps between the second movable contactor 430 and the hole walls of the third and fourth through holes.

[0219] 25 , a third stopper surface 2162 is provided on one side of third side portion 216 facing fourth side portion 217, and a fourth stopper surface 2172 is provided on one side of fourth side portion 217 facing third side portion 216. Third positioning portion 432 abuts against third stopper surface 2162, and fourth positioning portion 433 abuts against fourth stopper surface 2172.

[0220] Of course, in other embodiments, there may be a gap between the third positioning portion 432 and the third stopper surface 2162, and there may be a gap between the fourth positioning portion 433 and the fourth stopper surface 2172.

[0221] The third positioning portion 432 and the fourth positioning portion 433 are provided to protrude from the surface of one side of the second movable contact 430 facing the second fixed contact 440 .

[0222] The rod portion 211, the bottom portion 212, the first side portion 213, the second side portion 214, the spacer portion 215, the third side portion 216, and the fourth side portion 217 of the push rod 210 are of an integral structure.

[0223] By way of example, the push rod 210 is made of plastic and is formed by injection molding.

[0224] The first elastic member 500a and the second elastic member 500b may be spring pieces, but are not limited to this.

[0225] It is understood that each example / embodiment provided in the present disclosure can be combined with each other without causing a contradiction, and will not be described one by one here.

[0226] Some relays provide an auxiliary contact assembly to monitor the ON state of the main contacts. The monitoring current flowing through the auxiliary contact assembly is very small (milliampere level), so the auxiliary contact assembly is small in size.

[0227] The auxiliary contact assembly of the prior art includes an auxiliary movable spring and an auxiliary fixed spring, and a smaller-than-normal silver contact is connected to the auxiliary movable contact by crimping to form the movable contact. However, as mentioned above, the small size of the auxiliary contact assembly makes it inconvenient to assemble the silver contact.

[0228] The embodiments of the present disclosure provide a relay and an auxiliary contact assembly thereof to solve the problem of inconvenience in assembling the auxiliary contact assembly in the prior art.

[0229] An auxiliary contact assembly according to an embodiment of the present disclosure is applied to a relay, and the auxiliary contact assembly includes an auxiliary movable spring and an auxiliary fixed spring, the auxiliary movable spring including a movable spring contact end, the auxiliary fixed spring having a needle-like structure, and along the axial direction of the needle-like structure, the auxiliary fixed spring including a fixed spring pull-out end and a fixed spring contact end, and a side surface of the fixed spring contact end is configured to contact or be separated from the movable spring contact end.

[0230] According to some embodiments of the present disclosure, the movable spring contact end comprises: A movable spring drawer end, a substrate; The base includes a protrusion protruding from a surface on one side facing the fixed spring contact end, the protrusion being configured to come into contact with or be separated from a side surface of the fixed spring contact end.

[0231] According to some embodiments of the present disclosure, the base body comprises a first elastic arm and a second elastic arm, there is a gap between the first elastic arm and the second elastic arm, and both the first elastic arm and the second elastic arm have the protrusion protruding from one surface facing the fixed spring contact end, and the first elastic arm and the second elastic arm are arranged opposite each other in the axial direction of the needle-shaped structure.

[0232] According to some embodiments of the present disclosure, the protrusions are elongated in shape.

[0233] According to some embodiments of the present disclosure, the extension direction of the protrusions is perpendicular to the axial direction of the needle-like structure.

[0234] According to some embodiments of the present disclosure, the auxiliary movable spring comprises: a rotating segment, one end of which is connected to the movable spring contact end and the other end of which rotates at an angle relative to the movable spring contact end; and a tilted segment, one end of which is connected to the other end of the rotating segment and the other end of which is connected to the movable spring pull-out end, the tilted segment tilting away from the auxiliary fixed spring from the plane in which the movable spring pull-out end is located so that the movable spring pull-out end is positioned on the same plane as the auxiliary fixed spring.

[0235] According to some embodiments of the present disclosure, the auxiliary movable spring comprises: The movable spring further includes a widening segment disposed between the pull-out end and the inclined segment.

[0236] The relay of the embodiment of the present disclosure includes: The auxiliary contact assembly may include any of the above.

[0237] According to some embodiments of the present disclosure, With the base, a contact assembly including a movable contact and a fixed contact, the fixed contact being fixedly connected to the base; a push rod mechanism movable relative to the base, the movable contact being disposed on the push rod mechanism such that the push rod mechanism can drive the movable contact into or out of contact with the fixed contact; The auxiliary movable spring of the auxiliary contact assembly is connected to the base and is used to be pressed by the push rod mechanism, and the auxiliary fixed spring of the auxiliary contact assembly is fixedly connected to the base.

[0238] According to some embodiments of the present disclosure, the auxiliary movable spring and the auxiliary fixed spring are both inserted into the base, and the movable spring pull-out end of the auxiliary movable spring, the fixed spring pull-out end of the auxiliary fixed spring, and the pull-out end of the fixed contact all extend from the bottom surface of the base.

[0239] According to some embodiments of the present disclosure, along the direction of movement of the push rod mechanism, the auxiliary contact assembly is provided at one end of the push rod mechanism remote from the movable contact.

[0240] According to some embodiments of the present disclosure, one end of the push rod mechanism remote from the movable contact has a notch through which the auxiliary movable spring passes.

[0241] One embodiment of the above disclosure has at least the following advantages or beneficial effects.

[0242] In the auxiliary contact assembly of the embodiment of the present disclosure, the auxiliary fixed spring has a needle-like structure, which has the advantages of simplifying the component structure, making it easy to mold, and facilitating assembly. For example, the auxiliary fixed spring can be made by cutting a round or rectangular wire. In addition, the side surface of the fixed spring contact end of the auxiliary fixed spring is used to contact or separate from the movable spring contact end. Because the side surface of the fixed spring contact end is wide, the movable spring contact end and the fixed spring contact end are more likely to come into contact with each other, which prevents misalignment between the movable spring contact end and the fixed spring contact end from affecting the monitoring of the contact state between the movable contactor and the fixed contactor.

[0243] Hereinafter, embodiments of the present disclosure will be described in detail with reference to the accompanying drawings.

[0244] 28 to 30, Fig. 28 shows a top view of the relay according to the embodiment of the present disclosure with the top cover omitted, Fig. 29 shows a cross-sectional view taken along line HH in Fig. 28, and Fig. 30 shows a cross-sectional view taken along line II in Fig. 29. The relay according to the embodiment of the present disclosure includes a base 10, a push rod mechanism 20, a magnetic circuit mechanism 30, and a contact assembly 40. The push rod mechanism 20, the magnetic circuit mechanism 30, and the contact assembly 40 are disposed in the base 10, and the magnetic circuit mechanism 30 controls the contact or separation of the contact assembly 40 via the push rod mechanism 20.

[0245] The magnetic circuit mechanism 30 includes a yoke structure 310, a bobbin 320, and a coil 330. The yoke structure 310 defines a chamber, and the bobbin 320 and the coil 330 are both disposed within the chamber of the yoke structure 310. The coil 330 is wound around the outer periphery of the bobbin 320 to form a magnetic control circuit. The bobbin 320 has a central hole 321 in the direction in which the contacts of the contact assembly 40 make contact or separate, and the central hole 321 is used to pass one end of the push rod mechanism 20 through.

[0246] For example, the yoke structure 310 includes a yoke plate 311 and a U-shaped yoke 312, which are connected to each other to form a ring shape. The yoke plate 311 has a through hole 3111 through which the push rod mechanism 20 passes.

[0247] Of course, in other embodiments, the yoke structure 310 may comprise a cylindrical yoke and a yoke plate 311, which are connected together to form a ring shape.

[0248] The magnetic circuit mechanism 30 further includes two permanent magnets 340, which are disposed on the bobbin 320 and located on either side of the direction of movement of the push rod mechanism 20. The two permanent magnets 340 form a magnetic holding magnetic circuit structure, which helps reduce electricity costs, extend service life, and improve stability.

[0249] Of course, in other embodiments, permanent magnet 340 may not be provided.

[0250] The push rod mechanism 20 is movable relative to the base 10 in the direction of contact contact or separation. The push rod mechanism 20 includes a push rod 210 and an iron core 220, which is connected to the push rod 210. The iron core 220 is movable in the direction of contact or separation by the action of a magnetic control circuit formed by the coil 330, and further moves the push rod 210 to control the contact or separation of the contacts of the contact assembly 40.

[0251] Continuing to refer to Figures 28 to 30, the contact assembly 40 includes a movable contact 450 and a fixed contact 460, where the fixed contact 460 is fixedly attached to the base 10 and the movable contact 450 is attached to the push rod 210 of the push rod mechanism 20 and moves together with the push rod mechanism 20.

[0252] In this embodiment, the contact assemblies 40 are arranged in two groups, and the two groups of contact assemblies 40 are arranged along the direction of movement of the push rod mechanism 20 .

[0253] Of course, in other embodiments, the contact assemblies 40 may be in one group or other quantities.

[0254] Both ends of the movable contactor 450 in the longitudinal direction function as movable contacts, and the movable contacts may protrude from other parts of the movable contactor 450 or may be flush with other parts. The part of the fixed contactor 460 that comes into contact with the movable contactor 450 functions as a fixed contact, and the fixed contacts may protrude from other parts of the fixed contactor 460 or may be flush with other parts.

[0255] As an example, the movable contactor 450 includes a movable spring body 451 and a movable contact 452, the movable contact 452 and the movable spring body 451 having separate structures, and the movable contact 452 and the movable spring body 451 can be connected by crimping, but this is not limitative. The fixed contactor 460 includes a fixed spring body 461 and a fixed contact 462, the fixed contact 462 and the fixed spring body 461 having separate structures, and the fixed contact 462 and the fixed spring body 461 can be connected by crimping, but this is not limitative.

[0256] Of course, in another embodiment, the movable contact 452 and the movable spring body 451 may be an integral structure, and the fixed contact 462 and the fixed spring body 461 may be an integral structure.

[0257] 31, which is a schematic diagram showing an auxiliary contact assembly 70 provided at one end of a push rod mechanism 20 in a relay according to an embodiment of the present disclosure. The relay according to the embodiment of the present disclosure further includes the auxiliary contact assembly 70 including an auxiliary movable spring 710 and an auxiliary fixed spring 720, where the auxiliary movable spring 710 includes a movable spring contact end 712 and a movable spring pull-out end 711, and the auxiliary fixed spring 720 includes a fixed spring contact end 722 and a fixed spring pull-out end 721. The movable spring contact end 712 is used to contact or separate from the fixed spring contact end 722, and the movable spring pull-out end 711 and the fixed spring pull-out end 721 can be electrically connected to a monitoring unit, and the contact or separation between the movable spring contact end 712 and the fixed spring contact end 722 turns on or off the circuit formed by the auxiliary movable spring 710, the auxiliary fixed spring 720 and the monitoring unit, and the monitoring unit can monitor the contact state between the movable contactor 450 and the fixed contactor 460 of the contact assembly 40.

[0258] The auxiliary movable spring 710 of the auxiliary contact assembly 70 is connected to the base 10 and is pressed by the push rod mechanism 20 , and the auxiliary fixed spring 720 of the auxiliary contact assembly 70 is fixedly connected to the base 10 .

[0259] In the process in which the magnetic circuit mechanism 30 drives and moves the push rod mechanism 20, the push rod mechanism 20 not only moves the movable contactor 450, but also presses and moves the movable spring contact end 712 of the auxiliary movable spring 710, thereby causing the movable spring contact end 712 of the auxiliary movable spring 710 to contact or move away from the auxiliary fixed spring 720.

[0260] In one embodiment, when the movable contact 450 and the fixed contact 460 come into contact, the auxiliary movable spring 710 moves away from the auxiliary fixed spring 720, and when the movable contact 450 and the fixed contact 460 move apart, the auxiliary movable spring 710 comes into contact with the auxiliary fixed spring 720.

[0261] In another embodiment, when the movable contact 450 and the fixed contact 460 come into contact, the auxiliary movable spring 710 comes into contact with the auxiliary fixed spring 720, and when the movable contact 450 and the fixed contact 460 separate, the auxiliary movable spring 710 moves away from the auxiliary fixed spring 720.

[0262] 31 , the auxiliary movable spring 710 and the auxiliary fixed spring 720 are both inserted into the base 10, and the movable spring lead end 711 of the auxiliary movable spring 710 and the fixed spring lead end 721 of the auxiliary fixed spring 720 both extend from the bottom surface of the base 10. The movable spring lead end 711 and the fixed spring lead end 721 extend from the bottom surface of the base 10 to facilitate connection with a circuit board. Note that the bottom surface of the base 10 refers to the surface of one side of the base 10 that faces the circuit board when the relay is assembled on the circuit board.

[0263] Of course, the lead-out end of the fixed contact 460 may extend from the bottom surface of the base 10 .

[0264] The auxiliary contact assembly 70 is disposed at one end of the push rod mechanism 20 away from the movable contact 450 along the direction of movement of the push rod mechanism 20 .

[0265] As shown in FIGS. 31 to 33, FIG. 32 shows a schematic diagram of an auxiliary movable spring 710 according to an embodiment of the present disclosure. FIG. 33 shows a schematic diagram of an auxiliary fixed spring 720 according to an embodiment of the present disclosure. The auxiliary fixed spring 720 has a needle-like structure and is inserted into the base 10. Along the axial direction of the needle-like structure, one end of the needle-like structure is a fixed spring pull-out end 721, and the other end of the needle-like structure is a fixed spring contact end 722. The side surface of the fixed spring contact end 722 is used to contact or separate from the movable spring contact end 712.

[0266] In this embodiment, the auxiliary fixed spring 720 has a needle-like structure, which has the advantages of simplifying the component structure, facilitating molding, and facilitating assembly, for example, the auxiliary fixed spring 720 can be made by cutting a round or rectangular wire. Furthermore, the side surface of the fixed spring contact end 722 of the auxiliary fixed spring 720 is used to contact or separate from the movable spring contact end 712, and because the side surface of the fixed spring contact end 722 is wide, the movable spring contact end 712 and the fixed spring contact end 722 are more likely to come into contact with each other, which prevents misalignment between the movable spring contact end 712 and the fixed spring contact end 722 from affecting the monitoring of the contact state between the movable contactor 450 and the fixed contactor 460.

[0267] "Needle-like structure" is understood to refer to a thin, long wire, rod, or the like, whose axial dimension is much greater than its radial dimension.

[0268] 32 , the auxiliary movable spring 710 of the embodiment of the present invention has a sheet-like structure, but is not limited to this. The movable spring contact end 712 includes a base 713 and a protrusion 714. The base 713 is connected to the movable spring pull-out end 711. The protrusion 714 protrudes from one surface of the base 713 toward the fixed spring contact end 722 and is used for contacting or separating from the side of the fixed spring contact end 722. Because the protrusion 714 protrudes from the base 713 and is used for contacting the fixed spring contact end 722, when the movable spring contact end 712 contacts the fixed spring contact end 722, the side of the fixed spring contact end 722 abuts the protrusion 714 but does not abut the one surface of the base 713 toward the fixed spring contact end 722.

[0269] As an example, the protrusion 714 has an elongated shape. The extension direction of the protrusion 714 is perpendicular to the axial direction of the needle-like structure. By limiting the shape of the protrusion 714 to an elongated shape and making the extension direction of the protrusion 714 perpendicular to the axial direction of the needle-like structure, the protrusion 714 and the needle-like structure are spatially perpendicular to each other. As a result, when the movable spring contact end 712 contacts the fixed spring contact end 722, even if the auxiliary movable spring 710 and the auxiliary fixed spring 720 are slightly misaligned, this does not affect the contact between the protrusion 714 and the fixed spring contact end 722.

[0270] Of course, the extension direction of the protrusions 714 does not have to be perpendicular to the axial direction of the needle-like structure. For example, the extension direction of the protrusions 714 may intersect with the axial direction of the needle-like structure.

[0271] Furthermore, the shape of the convex portion 714 is not limited to an elongated shape, and may be, for example, a circular or elliptical shape.

[0272] 32 , the base 713 includes a first elastic arm 7131 and a second elastic arm 7132, with a gap 715 between the first elastic arm 7131 and the second elastic arm 7132. The first elastic arm 7131 and the second elastic arm 7132 each have a protrusion 714 protruding from one surface facing the fixed spring contact end 722. The first elastic arm 7131 and the second elastic arm 7132 are arranged opposite each other in the axial direction of the needle-like structure. When the movable spring contact end 712 contacts the fixed spring contact end 722, both of the protrusions 714 contact the side surfaces of the fixed spring contact end 722, improving contact reliability.

[0273] The auxiliary movable spring 710 further includes a rotating segment 716, an inclined segment 717, and an expanded segment 718. The rotating segment 716, the inclined segment 717, and the expanded segment 718 are arranged in this order in a direction from the movable spring contact end 712 toward the movable spring pull-out end 711. One end of the rotating segment 716 is connected to the movable spring contact end 712, and the other end is rotated at an angle relative to the movable spring contact end 712. One end of the inclined segment 717 is connected to the other end of the rotating segment 716, and the other end of the inclined segment 717 is connected to one end of the expanded segment 718. The other end of the expanded segment 718 is connected to the movable spring pull-out end 711.

[0274] In this embodiment, the rotation angle of the rotating segment 716 may be 90 degrees, but it may also be other angles. When the rotation angle of the rotating segment 716 is 90 degrees, the extension direction of the movable spring contact end 712 is perpendicular to the extension direction of the movable spring pull-out end 711.

[0275] The inclined segment 717 is inclined from the plane on which the movable spring lead end 711 is located in a direction away from the auxiliary fixed spring 720, so that the movable spring lead end 711 and the auxiliary fixed spring 720 are arranged on the same plane. By providing the inclined segment 717, the movable spring lead end 711 and the movable spring contact end 712 are not arranged on the same plane, so that the auxiliary fixed spring 720 can be arranged on the same plane as the movable spring lead end 711 without affecting the contact between the movable spring contact end 712 and the fixed spring contact end 722. Because the movable spring lead end 711 is on the same plane as the auxiliary fixed spring 720 and the movable spring contact end 712 is inclined toward the interior of the relay by the inclined segment 717, the arrangement of the auxiliary contact assembly 70 does not occupy excessive space in the direction of movement of the push rod mechanism 20 of the relay, contributing to a more compact relay.

[0276] The width of the widened segment 718 is greater than the widths of the movable spring contact end 712, the rotating segment 716, the inclined segment 717, and the movable spring pull-out end 711 of the auxiliary movable spring 710. When the auxiliary movable spring 710 is inserted into the base 10, the widened segment 718 is disposed in the insertion hole of the base 10 (as shown in FIG. 31 ), and since the widened segment 718 has a relatively wide width, the surface area of ​​the widened segment 718 is relatively large. Since the auxiliary movable spring 710 is connected to the base 10 via the widened segment 718, the connection strength is further increased.

[0277] 34, which shows a schematic diagram of the push rod 210 and the auxiliary contact assembly 70 after assembly. The auxiliary movable spring 710 is connected to the push rod 210 of the push rod mechanism 20. As an example, the auxiliary movable spring 710 is connected to one end of the push rod 210 away from the movable contact 450.

[0278] One end of the push rod 210 away from the movable contactor 450 has a notch 2100 through which the auxiliary movable spring 710 passes. When the push rod 210 moves toward the auxiliary fixed spring 720, the push rod 210 can press and move the movable spring contact end 712 of the auxiliary movable spring 710 until the movable spring contact end 712 contacts the auxiliary fixed spring 720. When the push rod 210 moves in a direction away from the auxiliary fixed spring 720, the auxiliary fixed spring 720 returns to its original position due to its own elastic force, and at this time the movable spring contact end 712 is separated from the auxiliary fixed spring 720. Because the auxiliary movable spring 710 passes through the notch 2100, the auxiliary movable spring 710 does not occupy space in the relay in the direction of movement of the push rod mechanism 20.

[0279] It is understood that each example / embodiment provided in the present disclosure can be combined with each other without causing a contradiction, and will not be described one by one here.

[0280] In the relay assembly process, to ensure that components such as the movable contact and the fixed contact are securely inserted into the base, the prior art uses an interference fit or a zero-gap fit between the components such as the movable contact and the fixed contact and the base. However, because the base is made of plastic material, the positioning strength of the plastic weakens at high temperatures, which affects the assembly of the components such as the movable contact and the fixed contact.

[0281] Furthermore, to solve the problem of the plastic positioning strength weakening at high temperatures, the prior art proposes filling the gap between the component and the base with a thermosetting sealant, which means that adhesive is first dispensed on the component inside the relay to improve the positioning strength, and then adhesive is dispensed from the bottom of the relay to complete the sealing of the plastic and prevent water and dust from entering the inside of the relay.

[0282] From the above, it can be seen that in the prior art, at least two adhesive dispensing steps are used, which complicates the relay assembly process and reduces assembly efficiency.

[0283] Therefore, the embodiments of the present disclosure provide a relay and its base seal structure that can improve assembly efficiency.

[0284] A base seal structure according to an embodiment of the present disclosure is applied to a relay, and the base seal structure comprises a base, a metal part, and a sealant. The base has a mounting hole penetrating its inner surface and bottom surface, and the wall of the mounting hole has a positioning wall structure and a gap wall structure. The metal part is inserted into the mounting hole, and a portion of the outer wall surface of the metal part abuts against the positioning wall structure. There is a gap between the portion of the outer wall surface of the metal part and the gap wall structure, and the gap is filled with a sealant.

[0285] According to some embodiments of the present disclosure, the positioning wall structure comprises a first positioning wall and a second positioning wall, and the first positioning wall and the second positioning wall are arranged opposite each other along one positioning direction.

[0286] According to some embodiments of the present disclosure, portions of the outer wall surfaces of the metal part are interference-fitted with the first positioning wall and the second positioning wall, respectively.

[0287] According to some embodiments of the present disclosure, the positioning wall structure and the gap wall structure are connected via a transition slope.

[0288] According to some embodiments of the present disclosure, the metal part includes a fixed contact pull-out pin, a coil pull-out pin, or an auxiliary contact pull-out pin.

[0289] According to some embodiments of the present disclosure, a seal groove is further provided on a bottom surface of the base, the seal groove communicating with the mounting hole; The sealant also fills the sealant grooves.

[0290] According to some embodiments of the present disclosure, a portion of the outer wall surface of the metal part is in an interference fit with the positioning wall structure.

[0291] According to some embodiments of the present disclosure, a connecting portion between the hole wall of the mounting hole and the bottom surface of the base has a slope.

[0292] According to some embodiments of the present disclosure, one end of the metal piece extends from a bottom surface of the base.

[0293] A relay according to an embodiment of the present disclosure includes any of the base seal structures described above.

[0294] One embodiment of the above disclosure has at least the following advantages or beneficial effects.

[0295] The base seal structure of the embodiment of the present disclosure achieves initial positioning through the positioning wall structure of the metal part and the mounting hole, and then seals the assembly between the metal part and the base by filling the gap between the metal part and the gap wall structure of the mounting hole with sealant. Compared with the prior art, the present disclosure eliminates one adhesive dispensing step, effectively reducing costs and improving assembly efficiency.

[0296] Hereinafter, embodiments of the present disclosure will be described in detail with reference to the accompanying drawings.

[0297] 35 to 37, Fig. 35 shows a top view of a relay according to an embodiment of the present disclosure with the top cover omitted, Fig. 36 shows a cross-sectional view taken along line JJ in Fig. 35, and Fig. 37 shows a cross-sectional view taken along line KK in Fig. 36. The relay according to the embodiment of the present disclosure includes a base 10, a push rod mechanism 20, a magnetic circuit mechanism 30, and a contact assembly 40. The push rod mechanism 20, the magnetic circuit mechanism 30, and the contact assembly 40 are disposed in the base 10, and the magnetic circuit mechanism 30 controls the contact or separation of the contacts of the contact assembly 40 via the push rod mechanism 20.

[0298] The magnetic circuit mechanism 30 includes a yoke structure 310, a bobbin 320, and a coil 330. The yoke structure 310 defines a chamber, and the bobbin 320 and the coil 330 are both disposed within the chamber of the yoke structure 310. The coil 330 is wound around the outer periphery of the bobbin 320 to form a magnetic control circuit. The bobbin 320 has a central hole 321 in the direction in which the contacts of the contact assembly 40 make contact or separate, and the central hole 321 is used to pass one end of the push rod mechanism 20 through.

[0299] For example, the yoke structure 310 includes a yoke plate 311 and a U-shaped yoke 312, which are connected to each other to form a ring shape. The yoke plate 311 has a through hole 3111 through which the push rod mechanism 20 passes.

[0300] Of course, in other embodiments, the yoke structure 310 may comprise a cylindrical yoke and a yoke plate 311, which are connected together to form a ring shape.

[0301] The magnetic circuit mechanism 30 further includes two permanent magnets 340, which are disposed on the bobbin 320 and located on either side of the direction of movement of the push rod mechanism 20. The two permanent magnets 340 form a magnetic holding magnetic circuit structure, which helps reduce electricity costs, extend service life, and improve stability.

[0302] Of course, in other embodiments, permanent magnet 340 may not be provided.

[0303] Continuing to refer to Figures 35 to 37, the contact assembly 40 includes a movable contact 450 and a fixed contact 460, where the fixed contact 460 is fixedly attached to the base 10 and the movable contact 450 is attached to the push rod mechanism 20 and moves together with the push rod mechanism 20.

[0304] In this embodiment, the contact assemblies 40 are arranged in two groups, and the two groups of contact assemblies 40 are arranged along the direction of movement of the push rod mechanism 20 .

[0305] Of course, in other embodiments, the contact assemblies 40 may be in one group or other quantities.

[0306] Both ends of the movable contactor 450 in the longitudinal direction function as movable contacts, and the movable contacts may protrude from other parts of the movable contactor 450 or may be flush with other parts. The part of the fixed contactor 460 that comes into contact with the movable contactor 450 functions as a fixed contact, and the fixed contacts may protrude from other parts of the fixed contactor 460 or may be flush with other parts.

[0307] As an example, the movable contactor 450 includes a movable spring body 451 and a movable contact 452, the movable contact 452 and the movable spring body 451 having separate structures, and the movable contact 452 and the movable spring body 451 can be connected by crimping, but this is not limitative. The fixed contactor 460 includes a fixed spring body 461 and a fixed contact 462, the fixed contact 462 and the fixed spring body 461 having separate structures, and the fixed contact 462 and the fixed spring body 461 can be connected by crimping, but this is not limitative.

[0308] Of course, in another embodiment, the movable contact 452 and the movable spring body 451 may be an integral structure, and the fixed contact 462 and the fixed spring body 461 may be an integral structure.

[0309] 37, the push rod mechanism 20 includes a push rod 210 and an iron core 220, and the iron core 220 is connected to the push rod 210. The iron core 220 can move in the direction of contact or separation by the action of a magnetic control circuit formed by a coil 330, and further moves the push rod 210 to control contact or separation of the contacts of the contact assembly 40.

[0310] As shown in FIGS. 38 and 39, FIG. 38 is a cross-sectional view taken along line MM in FIG. 36. FIG. 39 is a partially enlarged view of portion X3 in FIG. 38. The relay according to the embodiment of the present disclosure further includes a base seal structure including a base 10, a metal component 120, and a sealant (not shown). The base 10 is provided with a mounting hole 110 penetrating its inner surface and bottom surface, and the hole wall of the mounting hole 110 has a positioning wall structure 111 and a gap wall structure 112. The metal component 120 is inserted into the mounting hole 110, and a portion of the outer wall surface of the metal component 120 abuts against the positioning wall structure 111, leaving a gap between the portion of the outer wall surface of the metal component 120 and the gap wall structure 112. A sealant is filled in the gap.

[0311] In the base seal structure of the embodiment of the present disclosure, the hole wall of the mounting hole 110 of the base has a positioning wall structure 111 and a gap wall structure 112. When assembling the metal component 120 and the base 10, the metal component 120 is inserted into the mounting hole 110. A portion of the outer wall surface of the metal component 120 abuts against the positioning wall structure 111, achieving initial positioning of the metal component 120. A gap exists between the portion of the outer wall surface of the metal component 120 and the gap wall structure 112. By utilizing the siphon effect, the sealant can rise from one side of the bottom surface of the base 10 along the gap to one side of the inner surface of the base 10 and up to the opening of the mounting hole 110, filling the gap and further improving the sealing and positioning strength between the metal component 120 and the base 10. At the same time, the use of a sealant with better melt resistance than plastic materials improves the welding heat resistance of the relay product.

[0312] From the above, it can be seen that the base seal structure of the embodiment of the present disclosure first achieves initial positioning via the positioning wall structure 111 of the metal part 120 and the mounting hole 110, and then fills the gap between the metal part 120 and the gap wall structure 112 of the mounting hole 110 with sealant, thereby completing the seal assembly between the metal part 120 and the base. Compared with the prior art, the present disclosure eliminates one adhesive dispensing step, effectively reducing costs and improving assembly efficiency.

[0313] The metal part 120 can be any part within the relay that needs to be assembled into the mounting hole 110 in the base 10, including, but not limited to, a fixed contact pull-out pin, a coil pull-out pin, or an auxiliary contact pull-out pin.

[0314] As an example, one end of the metal part 120 extends from the bottom surface of the base 10 through the mounting hole 110. Of course, in other embodiments, one end of the metal part 120 does not have to extend from the bottom surface of the base 10.

[0315] 39, the positioning wall structure 111 includes a first positioning wall 113 and a second positioning wall 114, which are arranged opposite each other along a positioning direction D. The first positioning wall 113 and the second positioning wall 114 abut against the metal part 120, thereby limiting the degree of freedom of the metal part 120 and the base 10 in the positioning direction D.

[0316] The positioning direction D may be the length direction of the relay.

[0317] It can be seen that the shapes of the first positioning wall 113 and the second positioning wall 114 are adapted to the outer contour shape of the metal part 120. For example, if the cross-sectional shape of the metal part 120 is rectangular, the first positioning wall 113 and the second positioning wall 114 may be flat. Of course, in other embodiments, if the cross-sectional shape of the metal part 120 is circular, the shapes of the first positioning wall 113 and the second positioning wall 114 may be arc surfaces.

[0318] A portion of the outer wall surface of the metal component 120 is interference-fitted into the positioning wall structure 111. In the embodiment of the present disclosure, the portion of the outer wall surface of the metal component 120 is interference-fitted into the first positioning wall 113 and the second positioning wall 114, respectively. Of course, in other embodiments, a zero-gap fit may be adopted between the portion of the outer wall surface of the metal component 120 and the positioning wall structure 111.

[0319] The positioning wall structure 111 and the gap wall structure 112 are connected via a transition slope 115 .

[0320] As shown in Figures 40 to 43, Figure 40 shows a cross-sectional view taken along line NN in Figure 35. Figure 41 shows a partially enlarged view of portion X4 in Figure 40. Figure 42 shows a cross-sectional view taken along line PP in Figure 35. Figure 43 shows a partially enlarged view of portion X5 in Figure 42. Figure 40 is a cross-sectional view taken along a position in metal part 120 corresponding to positioning wall structure 111 of mounting hole 110, and Figure 42 is a cross-sectional view taken along a position in metal part 120 corresponding to partition wall structure 112 of mounting hole 110.

[0321] A slope 116 is formed at the connection between the hole wall of the mounting hole 110 and the bottom surface of the base 10. By providing the slope 116, the depth of the flow of the sealant can be increased.

[0322] As shown in Fig. 44, Fig. 44 shows a perspective schematic view of a relay according to an embodiment of the present disclosure, with the bottom surface of the base facing upward. The bottom surface of the base 10 is further provided with a seal groove 130 that communicates with the mounting hole 110. To increase the coverage area of ​​the sealant, the seal groove 130 is also filled with the sealant. The groove bottom of the seal groove 130 is connected to the hole wall of the mounting hole 110 via a slope 116.

[0323] Of course, in other embodiments, the seal groove 130 and the ramp 116 may be the same ramp.

[0324] The adhesive dispensing process of the relay according to the embodiment of the present disclosure will now be described in detail with reference to FIG.

[0325] According to the background art, in the prior art relay, adhesive must first be dispensed between the component and the base in the direction of the arrow in Figure 1, and then adhesive must be dispensed again in the direction of the arrow in Figure 2. In this way, at least two adhesive dispensing steps are required, and the two adhesive dispensing directions are different.

[0326] In the relay of the embodiment of the present disclosure, as described above, a portion of the outer wall surface of the metal part 120 abuts against the positioning wall structure 111, thereby achieving initial positioning of the metal part 120 (no adhesive dispensing is required during the initial positioning process). Then, adhesive is dispensed into the gap between the metal part 120 and the partition wall structure 112 in the direction of the arrow in FIG. 44 (i.e., from one side of the bottom surface of the base 10). At the same time, adhesive can also be dispensed into the gap between the upper cover and the base 10 in the direction of the arrow in FIG. 44. From the above, it can be seen that in the embodiment of the present disclosure, adhesive can be dispensed into the gap between the fixed contact puller pin 463 and the base 10, the gap between the coil puller pin 331 and the base 10, the gap between the auxiliary contact puller pin 710 and the base 10, and the gap between the upper cover and the base 10 in one adhesive dispensing direction (the direction of the arrow in FIG. 44), thereby significantly improving adhesive dispensing efficiency.

[0327] It is understood that each example / embodiment provided in the present disclosure can be combined with each other without causing a contradiction, and they will not be described one by one here.

[0328] It is to be understood that the present disclosure is not limited in its application to the precise construction and arrangement of components set forth herein. The present disclosure is capable of other embodiments and can be realized and carried out in various ways. Such variations and modifications are within the scope of the present disclosure. The present disclosure as disclosed and limited herein will be understood to cover all alternative combinations of two or more individual features mentioned or apparent in the text and / or drawings. All these different combinations constitute multiple alternative aspects of the present disclosure. The embodiments described herein represent the best modes known for carrying out the present disclosure and will enable others skilled in the art to utilize the present disclosure. [Explanation of symbols]

[0329] 1. Housing 10 base 11 Mounting part 20 Push rod mechanism 30 Magnetic circuit mechanism 40 Contact Assembly 40a First contact assembly 40b Second contact assembly 70 Auxiliary Contact Assembly 110 First mounting hole 111 First positioning wall structure 112 First gap wall structure 113 First Positioning Wall 114 Second Positioning Wall 115 Transition slope 116 Slope 120 Second mounting hole 121 Second positioning wall structure 122 Second gap wall structure 123 Third Positioning Wall 124 Fourth Positioning Wall 130 Seal groove 210 push rod 211 Rod part 212 Bottom 213 First Side 214 Second Side 215 Spacer part 216 Third Side 217 Fourth Side 218 Cavity 220 Iron Core 310 yoke structure 311 York board 312 U-shaped yoke 320 Bobbin 321 Central hole 330 coil 331 Coil pull-out pin 340 Permanent Magnets 410 first movable contact 411 First moving contact 412 first positioning part 413 Second positioning part 414 Perforation 415 Magnetically conductive region 416 First movable spring body 420 First fixed contact 421 First fixed spring body 422 First fixed contact 430 Second moving contact 431 Second moving contact 432 Third positioning part 433 Fourth positioning part 434 Second movable spring body 435 Magnetically conductive region 440 Second fixed contact 441 Second fixed spring body 442 Second fixed contact 450 moving contact 451 Movable spring body 452 Movable contact 460 Fixed contact 461 Fixed spring body 462 Fixed contact 463 Fixed contact pull-out pin 500a First elastic member 500b Second elastic member 510 first elastic portion 520 second elastic portion 610 First magnetic conductive body 611 Connection 612 Suspension part 620 Second Conductor 621 Sub-conductive body 622 Base 623 Side 710 Auxiliary movable spring 711 Movable spring drawer end 711 Movable spring drawer end 713 Base 714 Convex 715 Gap 716 Rotating Segments 717 Inclined Segment 718 Widening Segment 720 Auxiliary fixed spring 721 Fixed spring drawer end 722 Movable spring contact end 2100 notches 2131 First through hole 2132 First stop surface 2141 Second Through Hole 2142 Second stop surface 2161 Third Through Hole 2162 Third stop surface 2171 Fourth Through-hole 2172 Fourth stopper surface 3111 Through hole 7131 First Elastic Arm 7132 Second Elastic Arm

Claims

1. Housing and a first magnetic conductive body fixedly connected to the housing and located on one side of the movable contactor facing the fixed contactor; a contact assembly including a movable contact and a fixed contact, the fixed contact being fixedly connected to the housing and the movable contact being disposed within the housing; a push rod movable relative to the housing; The push rod includes a rod portion, a bottom portion, a first side portion, and a second side portion, the bottom portion being connected to one axial end of the rod portion, the first side portion and the second side portion being both connected to the bottom and arranged opposite to each other along the length direction of the movable contactor, the first side portion being provided with a first through hole, the second side portion being provided with a second through hole, the movable contactor passing through the first through hole and the second through hole, the movable contactor being movable between a first position and a second position relative to the first through hole and the second through hole along the axial direction of the rod portion, the movable contactor abutting against the hole wall of the first through hole and the hole wall of the second through hole at the first position, the movable contactor having a magnetic conductive region corresponding to the first magnetic conductive body along the axial direction of the rod portion, and no part of the push rod being accommodated between the magnetic conductive region and the first magnetic conductive body A relay characterized by:

2. a first elastic member connected between the movable contact and the push rod, the first elastic member being used to apply an elastic force to the movable contact to move it toward the first position; 2. The relay according to claim 1.

3. The magnetically conductive region is located between the first side and the second side.

2. The relay according to claim 1.

4. A movable contact is provided at each end of the movable contactor in the longitudinal direction, one of the movable contacts being located on one side of the first side facing the second side, and the other of the movable contacts being located on one side of the second side facing the first side, and the magnetically conductive region being located between the two movable contacts.

2. The relay according to claim 1.

5. a first positioning portion and a second positioning portion are protruded from one side of the movable contact, the first positioning portion corresponds to the position of the first side portion, and the second positioning portion corresponds to the position of the second side portion; In the longitudinal direction of the movable contactor, the movable contactor is disposed at a predetermined position on the push rod via the first positioning portion and the second positioning portion.

2. The relay according to claim 1.

6. a first stop surface on one side of the first side portion facing the second side portion, and a second stop surface on one side of the second side portion facing the first side portion; The first positioning portion abuts against the first stopper surface, and the second positioning portion abuts against the second stopper surface.

6. The relay according to claim 5.

7. The first positioning portion and the second positioning portion are provided to protrude from a surface of one side of the movable contactor facing the fixed contactor.

6. The relay according to claim 5.

8. The relay further includes a second magnetic conductive body, the second magnetic conductive body being connected to the magnetic conductive body region of the movable contactor, and the second magnetic conductive body being fixedly connected to one side of the movable contactor facing away from the first magnetic conductive body, thereby forming a magnetic circuit between the first magnetic conductive body and the second magnetic conductive body in the width direction of the movable contactor; No part of the push rod is accommodated between the second magnetic body and the first magnetic body along the axial direction of the rod portion.

2. The relay according to claim 1.

9. The second magnetic conductive body is U-shaped and covers the magnetic conductive region along the width direction of the movable contact.

9. The relay according to claim 8.

10. the second magnetic conductive body includes at least two sub-magnetic conductive bodies, each of which is U-shaped; The movable contactor is provided with at least one perforation, and at least two of the sub-magnetic conductive bodies are connected to one side of the movable contactor facing away from the first magnetic conductive body, and the sides of the at least two sub-magnetic conductive bodies pass through at least one perforation, so that they come close to or contact each other with the first magnetic conductive body through the perforation, thereby forming at least two independent magnetic conductive circuits in the width direction of the movable contactor.

9. The relay according to claim 8.

11. There is a gap between the two sides located at one of the perforations.

11. The relay according to claim 10.

12. The housing has a mounting portion, the mounting portion being located on one side of the push rod in a radial direction, the radial direction being perpendicular to the moving direction of the push rod, and the first magnetic conductive body being fixedly connected to the mounting portion.

12. A relay according to any one of claims 1 to 11.

13. The housing includes a side wall, the side wall being located on one radial side of the push rod, and the mounting portion being formed on the side wall.

13. The relay according to claim 12.

14. The side wall surrounds the push rod along the circumferential direction of the push rod.

14. The relay of claim 13.

15. The housing includes a base and an outer cover. The outer cover is connected to the base, the outer cover and the base form a chamber for accommodating the contact assembly, the push rod, and the first magnetic conductive body, and the base and / or the outer cover form the sidewall.

14. The relay of claim 13.

16. the first magnetic conductive body includes a connection portion and a suspension portion, the connection portion being fixedly connected to the mounting portion; defining an imaginary plane perpendicular to a moving direction of the push rod, the connection portion having a first orthogonal projection on the imaginary plane, the suspension portion having a second orthogonal projection on the imaginary plane, and the movable contact having a third orthogonal projection on the imaginary plane, the first orthogonal projection not overlapping with the third orthogonal projection, and the second orthogonal projection at least partially overlapping with the third orthogonal projection; 13. The relay according to claim 12.

17. The first magnetic conductive body has a flat plate structure.

17. The relay of claim 16.

18. The first magnetic conductive body is inserted into the mounting portion of the housing along an insertion direction, the insertion direction being perpendicular to the moving direction of the push rod.

13. The relay according to claim 12.

19. the mounting portion includes a first mounting hole penetrating an inner surface and an outer surface of the housing, and a hole wall of the first mounting hole has a first positioning wall structure and a first gap wall structure; The first magnetic conductive body is inserted into the first mounting hole, and a part of the outer wall surface of the first magnetic conductive body abuts against the first positioning wall structure. A gap is formed between the part of the outer wall surface of the first magnetic conductive body and the first gap wall structure, and a sealant is filled in the gap.

19. The relay of claim 18.

20. A portion of the outer wall surface of the first magnetic conductive body is interference-fitted into the first positioning wall structure.

20. The relay of claim 19.

21. The insertion direction of the first magnetic body is perpendicular to the length direction of the movable contact.

19. The relay of claim 18.

22. The fixed contact is inserted into the housing along the insertion direction.

19. The relay of claim 18.

23. The housing further includes a second mounting hole penetrating the inner surface and the outer surface thereof, and a hole wall of the second mounting hole has a second positioning wall structure and a second gap wall structure; The fixed contact is inserted into the second mounting hole, and a part of an outer wall surface of the fixed contact abuts against the second positioning wall structure. A gap is formed between the part of the outer wall surface of the fixed contact and the second gap wall structure, and a sealant is filled in the gap.

23. The relay of claim 22.

24. A portion of the outer wall surface of the fixed contact is interference-fitted into the second positioning wall structure.

24. The relay of claim 23.

Images