Push rod assembly and relay

Abstract

The present disclosure provides a push rod assembly (50) and a relay, the push rod assembly (50) including a base (52), a movable member (53), an elastic member (56), and a limit structure (57), the movable member (53) is movably connected to the base (52), one end of the elastic member (56) abuts the base (52), the other end abuts the movable member (53), the elastic member (56) provides an elastic force that causes the movable member (53) to tend to move toward the fixed contact lead end (20) of the relay. The limit structure (57) is connected to the base (52) and the movable member (53) and is used to limit the range of movement of the movable member (53) relative to the base (52), the limit structure (57) including a limit hole (572) and a limit portion (571) that fit together, the limit portion (571) being movably disposed within the limit hole (572).

Description

[Technical Field]

[0001] This disclosure claims priority to a Chinese patent application bearing application number 202222688298.2, filed on October 12, 2022, and entitled "Push Rod Assembly and Relay," the entire contents of which are incorporated herein by reference.

[0002] The present disclosure relates to the field of electronic components, and more particularly to push rod assemblies and relays. [Background technology]

[0003] A relay is an electrical control component that controls a circuit by driving the movement of an internal moving part using a magnetic field generated after an electric current is passed through a toroidal coil, thereby closing a moving contact and a fixed contact.

[0004] The push rod assembly includes a base and a movable member, the movable member being movable relative to the base such that the relay completes an overtravel process after the movable member contacts the fixed contact.

[0005] However, in the related art, the assembly of the movable member to accommodate the over-travel process is not simple. Summary of the Invention

[0006] The present disclosure provides a push rod assembly and relay for simplifying assembly of moving parts.

[0007] According to one aspect of the present disclosure, a push rod assembly according to an embodiment of the present disclosure is applied to a relay, and the push rod assembly includes a base and a movable member movably connected to the base. , bulletsa limit structure connected to the base and the movable member, the limit structure being used to limit the range of movement of the movable member relative to the base, the limit structure including a limit hole and a limit portion that fit together, the limit portion being movably disposed within the limit hole.

[0008] According to one embodiment of the present disclosure, one end of the elastic member abuts against the base, and the other end abuts against the movable member.

[0009] According to one embodiment of the present disclosure, the limit hole includes a first end and a second end arranged opposite to each other along the movement direction of the movable member, and the hole diameter of the second end is larger than the hole diameter of the first end, and when the movable member separates from the fixed contact pull-out end, the limit portion is located at the first end of the limit hole.

[0010] According to one embodiment of the present disclosure, the hole diameter of the limit hole gradually increases in a direction from the first end toward the second end of the limit hole.

[0011] According to one embodiment of the present disclosure, the hole wall of the limit hole includes a first plane and a second plane arranged opposite to each other, and a first inclined surface and a second inclined surface arranged opposite to each other, one end of the first inclined surface and one end of the second inclined surface are respectively connected to both ends of the first plane, and the other end of the first inclined surface and the other end of the second inclined surface are respectively connected to both ends of the second plane.

[0012] According to one embodiment of the present disclosure, the limit portion has a first arcuate surface, and when the limit portion is located at the first end of the limit hole, the first arcuate surface is used to realize the limit hole and the limit.

[0013] According to one embodiment of the present disclosure, the limit portion is provided on the movable member, and the limit hole is provided on the base.

[0014] According to one embodiment of the present disclosure, the movable member includes a movable contact and a second magnetic conductive body fixedly connected to the movable contact, and the limit portion is provided on the second magnetic conductive body.

[0015] According to one embodiment of the present disclosure, the second magnetic body has a bottom portion, and first and second side portions connected to both ends of the bottom portion along the width direction of the movable contactor, respectively provided on two opposing sides of the width direction of the movable contactor, where the limit portions are respectively provided, and the base includes a base portion, and a first limit member and a second limit member connected to the base and arranged opposite each other, where the first side portion is provided corresponding to the first limit member and the second side portion is provided corresponding to the second limit member, and the first limit member and the second limit member are each provided with the limit hole.

[0016] According to an embodiment of the present disclosure, a side surface of the first limit member facing the first side portion and a side surface of the second limit member facing the second side portion each include a second arcuate surface.

[0017] According to one embodiment of the present disclosure, the first side portion and the second side portion are located between the first limit member and the second limit member, and the limit portions are integrally protruded on the side of the first side portion that is away from the second side portion and the side of the second side portion that is away from the first side portion, respectively.

[0018] According to one embodiment of the present disclosure, the limiting portion is a protruding structure.

[0019] According to one embodiment of the present disclosure, the limiting portion is a rivet, and the rivet is crimped to the second magnetic conductive body.

[0020] According to one embodiment of the present disclosure, the second magnetic body includes a bottom portion on which the limit portion is provided, and a first side portion and a second side portion connected to both ends of the bottom portion along the width direction of the movable contactor and respectively arranged on two opposing side edges of the movable contactor in the width direction.

[0021] According to one embodiment of the present disclosure, the movable member includes a movable contactor, a second magnetic body fixedly connected to the movable contactor, and a fixed member fixedly connected to the second magnetic body and having the limit portion.

[0022] According to one embodiment of the present disclosure, the fixing member has perforations, and the elastic member has perforations. One end abuts against the base The other end abuts against the second magnetic conductive body.

[0023] According to one embodiment of the present disclosure, the base has the limit portion, and the movable member includes a movable contactor, a second magnetic body fixedly connected to the movable contactor, and a fixed member fixedly connected to the second magnetic body and having the limit hole.

[0024] According to another aspect of the present disclosure, there is provided a relay including the push rod assembly according to any one of the preceding claims.

[0025] According to an embodiment of the present disclosure, the relay further includes a contact can, wherein the push rod assembly is movable relative to the contact can, and a first magnetic conductive body disposed within the contact can and fixed relative to the contact can; Here, the first magnetic conductive body is used to form a magnetic circuit with the second magnetic conductive body of the push rod assembly.

[0026] An embodiment of the present disclosure has at least the following advantages or beneficial effects: In the push rod assembly according to the embodiment of the present disclosure, the movable member and the base are connected via a limit structure, which limits the range of movement of the movable member relative to the base. The limit structure includes a limit hole and a limit portion that are fitted together, making the structure of the push rod assembly simpler and more convenient to assemble. [Brief explanation of the drawings]

[0027] These and other features and advantages of the present disclosure will become more apparent from the detailed description of illustrative embodiments thereof, which proceeds with reference to the accompanying drawings. [Figure 1] FIG. 1 is a schematic side view showing a push rod assembly according to a first embodiment of the present disclosure. [Figure 2] FIG. 2 is an exploded schematic view of FIG. 1. [Figure 3] FIG. 2 is a partially enlarged view showing the X portion of FIG. [Figure 4] 2 is a cross-sectional view of FIG. 1 taken along line B-B. [Figure 5] FIG. 10 is an exploded schematic view showing a push rod assembly according to a second embodiment of the present disclosure. [Figure 6] FIG. 10 is an exploded schematic view showing a push rod assembly according to a third embodiment of the present disclosure. [Figure 7] FIG. 10 is an exploded schematic view showing a push rod assembly according to a fourth embodiment of the present disclosure. [Figure 8] FIG. 10 is an exploded schematic view showing a push rod assembly according to a fifth embodiment of the present disclosure. [Figure 9] FIG. 10 is an exploded schematic view showing a push rod assembly according to a sixth embodiment of the present disclosure. [Figure 10] FIG. 1 is a schematic plan view illustrating a relay according to an embodiment of the present disclosure. [Figure 11] 1 is a schematic perspective view of a relay according to an embodiment of the present disclosure, viewed from one viewpoint; [Figure 12] 10 is a perspective schematic view of a relay according to an embodiment of the present disclosure, viewed from another perspective. [Figure 13] 1 is a schematic diagram illustrating a relay according to an embodiment of the present disclosure, where the housing is omitted. [Figure 14] 14 is a cross-sectional view taken along the line AA in FIG. 13. DETAILED DESCRIPTION OF THE INVENTION

[0028] Exemplary embodiments will now be described more comprehensively with reference to the accompanying drawings. However, exemplary embodiments may be embodied in various forms and should not be construed as limited to the embodiments described herein. Although relative terms such as "above" and "below" are used herein to describe the relative relationship of one marked component to another, these terms are used herein for convenience only, for example, according to the orientation of the examples depicted in the drawings. It will be understood that if the marked device is turned upside down, the component described as being "above" would become the component described as being "below." Other relative terms such as "top" and "bottom" have similar meanings. When a structure is "above" another structure, it can mean that the structure is integrally formed on the other structure, that the structure is "directly" disposed on the other structure, or that the structure is "indirectly" disposed on the other structure via another structure.

[0029] 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 in an open inclusive sense to indicate that additional elements / components / analogs may be present beyond the listed elements / components / analogs. Terms such as "first" and "second" are used merely as markers and do not limit the number of referenced items.

[0030] As shown in FIGS. 10 to 14, FIG. 10 is a schematic plan view showing a relay according to an embodiment of the present disclosure. FIG. 11 is a schematic perspective view of a relay according to an embodiment of the present disclosure from one viewpoint. FIG. 12 is a schematic perspective view of a relay according to an embodiment of the present disclosure from another viewpoint. FIG. 13 is a schematic view of a relay according to an embodiment of the present disclosure, in which the housing is omitted. FIG. 14 is a cross-sectional view taken along line AA in FIG. 13. The relay according to the embodiment of the present disclosure includes a housing 1100, a contact receptacle 10, a pair of fixed contact lead ends 20, a first magnetic conductive body 40, a push-rod assembly 50, and an electromagnet unit 1200.

[0031] As an example, the housing 1100 includes a first casing 1110 and a second casing 1120, which are engaged with each other to form a chamber for accommodating the contact vessel 10, the push rod assembly 50 and the electromagnet unit 1200.

[0032] The contact container 10 has a contact chamber 101, and a pair of fixed contact pull-out ends 20 are connected to the contact container 10. One of the pair of fixed contact pull-out ends 20 is a terminal through which current flows, and the other is a terminal through which current flows. A portion of the fixed contact pull-out end 20 extends into the contact chamber 101 and is used to contact or separate the movable contact 54 of the push rod assembly 50. A portion of the fixed contact pull-out end 20 is exposed on the outer wall surface of the contact container 10.

[0033] The bottom of the fixed contact lead-out end 20 is a fixed contact. As can be appreciated, the fixed contact can be provided integrally with the bottom of the fixed contact lead-out end 20 or separately.

[0034] The contact vessel 10 includes a yoke plate 13 and an insulating cover 11a, and the insulating cover 11a is provided to cover one side of the yoke plate 13, forming a contact chamber 101 of the contact vessel 10. The yoke plate 13 has a first through hole 131 communicating with the contact chamber 101, and the push rod assembly 50 is movably provided in the first through hole 131.

[0035] The insulating cover 11a includes a ceramic cover 11 and a flange member 12. The ceramic cover 11 is connected to the yoke plate 13 via the flange member 12. The flange member 12 may be a metal member having a ring structure, such as an iron-nickel alloy, and one end of the flange member 12 is connected to the edge of the opening of the ceramic cover 11. For example, the flange member 12 and the edge of the opening of the ceramic cover 11 may be connected to each other by laser welding, brazing, resistance welding, or adhesive bonding. The other end of the flange member 12 is connected to the yoke plate 13. Similarly, the flange member 12 and the yoke plate 13 may be connected to each other by laser welding, brazing, resistance welding, or adhesive bonding. By providing one flange member 12 between the ceramic cover 11 and the yoke plate 13, the connection between the ceramic cover 11 and the yoke plate 13 can be facilitated.

[0036] 11, the relay further includes a metal cover 1410, which is connected to the side of the yoke plate 13 opposite the insulating cover 11a, and which is disposed to cover a first through-hole 131 on the yoke plate 13. The metal cover 1410 and the yoke plate 13 are formed to enclose a chamber for accommodating the fixed core 1230 and the movable core 1240 of the electromagnet unit 1200, which will be described in detail below.

[0037] The electromagnet unit 1200 includes a coil bobbin 1210, a coil 1220, a fixed core 1230, a movable core 1240, and a reset member 1250. The coil bobbin 1210 is hollow and cylindrical, and is made of an insulating material. A metal cover 1410 is provided inside the coil bobbin 1210. The coil 1220 is wound around the coil bobbin 1210. The fixed core 1230 is fixedly provided inside the metal cover 1410, and a portion of the fixed core 1230 extends into the first through-hole 131. The fixed core 1230 has a second through-hole 1231, which is provided at a position corresponding to the first through-hole 131 and is used for inserting the rod portion 51 of the push rod assembly 50 therein. The movable iron core 1240 is movably installed within the metal cover 1410 and is disposed opposite the fixed iron core 1230. The movable iron core 1240 is connected to the rod portion 51 so that the movable iron core 1240 is attracted to the fixed iron core 1230 when the coil 1220 is energized. The movable iron core 1240 and the rod portion 51 can be connected by screwing, caulking, welding or other methods.

[0038] The reset member 1250 is located inside the metal cover 1410, and is provided between the fixed iron core 1230 and the movable iron core 1240, and is used to reset the movable iron core 1240 when the power supply to the coil 1220 is cut off. The reset member 1250 may be a spring, and is provided to cover the outside of the rod portion 51.

[0039] The first magnetic conductive body 40 is provided in the contact chamber 101 of the contact vessel 10 and is fixed to the contact vessel 10 .

[0040] As an example, the first magnetic conductive body 40 may be directly connected to the contact vessel 10 or may be connected to the contact vessel 10 via the connecting member 30 .

[0041] In this embodiment, the first magnetic conductive body 40 is connected to the ceramic cover 11 via a connecting member 30 .

[0042] 1 to 4 and 11, FIG. 1 is a schematic side view showing a push rod assembly 50 according to a first embodiment of the present disclosure. FIG. 2 is an exploded schematic view of FIG. 1. FIG. 3 is a partially enlarged view showing portion X of FIG. 1. FIG. 4 is a cross-sectional view taken along line BB of FIG. 1.

[0043] The push rod assembly 50 includes a rod portion 51, a base 52, a movable member 53, an elastic member 56, and a limit structure 57. The rod portion 51 is movably disposed through the first through-hole 131 and the second through-hole 1231. One end of the rod portion 51 is connected to the base 52, and the other end of the rod portion 51 is connected to the movable core 1240. When the coil 1220 of the relay is energized, the movable core 1240 moves the rod portion 51 in cooperation with the movable core 1240, thereby closing the relay contacts. One end of the elastic member 56 abuts against the base 52, and the other end of the elastic member 56 abuts against the movable member 53. The elastic member 56 provides an elastic force that causes the movable member 53 to move toward the fixed contact lead end 20 of the relay.

[0044] As will be understood, the terms "comprises" and "having" and any variations thereof in the embodiments of the present disclosure are intended to cover a non-exclusive inclusion. For example, a process, method, system, product, or facility that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units that are not listed, or may optionally further include other steps or components inherent to the process, method, product, or facility.

[0045] As can be appreciated, the resilient member 56 can be, but is not limited to, a spring.

[0046] The limit structure 57 is connected to the base 52 and the movable member 53, and is used to limit the range of movement of the movable member 53 relative to the base 52. The limit structure 57 includes a limit hole 572 and a limit portion 571 that fit together, the limit hole 572 including a first end 573 and a second end 574 that are provided opposite each other along the movement direction D1 of the movable member 53, the hole diameter of the second end 574 being larger than the hole diameter of the first end 573, and the limit portion 571 being movably drilled between the first end 573 and the second end 574 of the limit hole 572.

[0047] When the movable member 53 is not in contact with the fixed contact pull-out end 20, the elastic member 56 causes the limiting portion 571 to be positioned at the first end 573 of the limiting hole 572. When the movable member 53 is in contact with the fixed contact pull-out end 20 and completing the over-travel process, the limiting portion 571 moves from the first end 573 to the second end 574 of the limiting hole 572. The diameter of the second end 574 of the limiting hole 572 is larger than the diameter of the first end 573, so the limiting hole 572 has a "larger one end, smaller the other end" structure. During the over-travel process, the gap between the limiting portion 571 and the wall of the limiting hole 572 increases, preventing frictional jamming between the limiting portion 571 and the wall of the limiting hole 572 as the movable member 53 moves relative to the base 52. At the same time, the diameter of the first end 573 of the limit hole 572 is small, so that in the initial state, the limit engagement between the limit portion 571 and the limit hole 572 is not affected, and the movable member 53 is prevented from swinging relative to the base 52.

[0048] In the initial state, in order to realize a limit between the movable member 53 and the base 52, the hole diameter of the first end 573 of the limit hole 572 must match the shape of the limit portion 571, and when the limit portion 571 is positioned at the first end 573 of the limit hole 572, the limit portion 571 can realize a limit with the hole wall of the limit hole 572.

[0049] In this embodiment, the base 52 is directly connected to the movable member 53 via the limit structure 57, which simplifies the assembly between the base 52 and the movable member 53. In addition, since there are no other components above the movable member 53, motion interference between the other components and the first magnetic conductive body 40 is avoided during the overtravel process.

[0050] As can be understood, the limit hole 572 may be a through hole or a blind hole.

[0051] 1 to 4, the hole diameter of limit hole 572 gradually increases in the direction from first end 573 to second end 574 of limit hole 572. During the overtravel process, as limit portion 571 moves from first end 573 to second end 574 of limit hole 572, the gap between limit portion 571 and the hole wall of limit hole 572 gradually increases.

[0052] Furthermore, the hole wall of the limit hole 572 includes a first plane 575 and a second plane 576 arranged oppositely and a first inclined plane 577 and a second inclined plane 578 arranged oppositely, one end of the first inclined plane 577 and one end of the second inclined plane 578 are respectively connected to both ends of the first plane 575, and the other end of the first inclined plane 577 and the other end of the second inclined plane 578 are respectively connected to both ends of the second plane 576.

[0053] In this embodiment, the shape of the limit hole 572 is approximately an isosceles trapezoid, but is not limited to this. For example, the shape of the limit hole 572 may be a regular trapezoid, i.e., the slopes of the first inclined surface 577 and the second inclined surface 578 are not equal. Alternatively, the shape of the limit hole 572 may be a triangle, and preferably, the triangle may be an equilateral triangle.

[0054] Of course, in other embodiments, the hole diameter of limit hole 572 does not have to gradually increase along the direction from first end 573 to second end 574 of limit hole 572, and for example, the hole wall of limit hole 572 may include a constant diameter portion and an expanding diameter portion. For example, from first end 573 to second end 574, the hole wall of limit hole 572 may include an expanding diameter portion, a constant diameter portion, an expanding diameter portion, a constant diameter portion, etc. in that order.

[0055] As shown in FIG. 3, the limit portion 571 has a first arcuate surface 571a, and when the limit portion 571 is positioned at the first end 573 of the limit hole 572, the first arcuate surface 571a and the wall of the limit hole 572 form a limit.

[0056] In this embodiment, limit portion 571 is designed to include first arcuate surface 571a on the outer wall thereof, thereby forming line contact between first arcuate surface 571a and the wall of limit hole 572, and this line contact reduces the frictional force between limit portion 571 and the wall of limit hole 572. When limit portion 571 and limit hole 572 move relative to each other, jamming is less likely to occur.

[0057] The base 52 is provided with a limit hole 572, and the movable member 53 includes a limit portion 571. Of course, in other embodiments, the limit hole 572 may be provided in the movable member 53, and the limit portion 571 may be provided in the base 52.

[0058] As can be seen, the movable member 53 includes a movable contact 54 and a second magnetic conductive body 55 fixedly connected to the movable contact 54. The movable contact 54 is used to contact or separate from the fixed contact lead end of the relay. At least a portion of the second magnetic conductive body 55 and the first magnetic conductive body 40 are located on two opposing sides of the movable contact 54, respectively. The second magnetic conductive body 55 can form a short-circuit prevention ring electromagnetic structure with the first magnetic conductive body 40, and the short-circuit prevention ring electromagnetic structure can form a magnetic attraction between the first magnetic conductive body 40 and the second magnetic conductive body 55 to counteract the repulsive force generated by the short-circuit current and prevent the movable contact 54 from being repelled from the fixed contact lead end.

[0059] As can be appreciated, the first magnetic conductive body 40 may have a straight or U-shaped structure. The first magnetic conductive body 40 and the second magnetic conductive body 55 may each be made of a material such as iron, cobalt, nickel, and alloys thereof.

[0060] The first magnetic conductive body 40 may include a plurality of stacked magnetic conductive pieces. The second magnetic conductive body 55 may also include a plurality of stacked magnetic conductive pieces, or the second magnetic conductive body 55 may include a plurality of U-shaped magnetic conductive bodies arranged side by side.

[0061] Of course, in other embodiments, the movable member 53 may include the movable contact 54 and not include the second magnetic conductive body 55.

[0062] For ease of explanation, the following description will be given taking as an example a case where the movable member 53 includes the movable contact 54 and the second magnetic conductive body 55, but the present invention is not limited to this.

[0063] As shown in FIGS. 1 to 4 , in this embodiment, a limit hole 572 is provided in the base 52, and a limit portion 571 is provided in the second magnetic conductive body 55. The second magnetic conductive body 55 includes a bottom portion 551, a first side portion 552, and a second side portion 553. The first side portion 552 and the second side portion 553 are arranged along the width direction D3 of the movable contactor 54, and are connected to both ends of the bottom portion 551, respectively. The first side portion 552 and the second side portion 553 are provided on two opposing sides of the movable contactor 54 in the width direction D3, respectively. The first side portion 552 and the second side portion 553 are provided with the limit portion 571, respectively.

[0064] The base 52 includes a base 521, a first limit member 522 connected to the base 521 and arranged opposite each other, and a second limit member 523, the first side 552 being arranged corresponding to the first limit member 522, the second side 553 being arranged corresponding to the second limit member 523, and the first limit member 522 and the second limit member 523 each having a limit hole 572.

[0065] The side surface of the first limit member 522 facing the first side portion 552 and the side surface of the second limit member 523 facing the second side portion 553 include a second arcuate surface 524 .

[0066] In this embodiment, the side surface of the first limit member 522 facing the first side portion 552 and the side surface of the second limit member 523 facing the second side portion 553 are each designed to include a second arcuate surface 524. This allows the two second arcuate surfaces 524 to be in line contact with the first side portion 552 and the second side portion 553, respectively. This line contact reduces the friction between the first side portion 552 and the first limit member 522 and between the second side portion 553 and the second limit member 523. When the second magnetic conductive body 55 moves relative to the base 52, it is less likely to get stuck. Furthermore, it is possible to prevent the contact chamber of the relay from being contaminated by shavings.

[0067] The first side portion 552 and the second side portion 553 are positioned between the first limit member 522 and the second limit member 523. A limit portion 571 is integrally provided in a protruding manner on the side of the first side portion 552 that is away from the second side portion 553 and on the side of the second side portion 553 that is away from the first side portion 552, respectively.

[0068] For example, the limit portion 571 can be formed by punching out the side surfaces of the first side portion 552 / second side portion 553 to form the protruding structure of the limit portion 571. The specific positions of the protruding structures on the first side portion 552 / second side portion 553 can be flexibly adjusted depending on the structure.

[0069] In this embodiment, two limit portions 571 are respectively protruded on the side of the first side portion 552 away from the second side portion 553 and on the side of the second side portion 553 away from the first side portion 552, so that the first side portion 552 and the second side portion 553 can be in complete contact with the first limit member 522 and the second limit member 523, respectively, thereby ensuring stability when restricting the second magnetic conductive body 55 and the base 52 and not affecting the magnetic conductivity efficiency.

[0070] In one embodiment, limit portion 571 may be elongated. When limit portion 571 is positioned at first end 573 of limit hole 572, a side surface larger than the elongated area contacts the hole wall of limit hole 572. By contacting the surface larger than the area of ​​limit portion 571 with the hole wall of limit hole 572, a situation in which movable contactor 54 oscillates relative to base 52 in the initial state can be effectively prevented, and the probability of movable contactor 54 bouncing or repulsing can be reduced.

[0071] 5, which is an exploded schematic view showing a push rod assembly 50 according to a second embodiment of the present disclosure. In the second embodiment, the same parts as those in the first embodiment described above will not be described again, and the differences are as follows.

[0072] The limit portion 571 includes two convex hull structures, which are spaced apart along the longitudinal direction D2 of the movable contactor 54. The design of the double convex hull structure effectively prevents the movable contactor 54 from swinging relative to the base 52 in the initial state, reducing the probability of the movable contactor 54 bouncing back or repelling.

[0073] As can be seen, the direction of movement D1, the length direction D2 and the width direction D3 are perpendicular to each other, two by two.

[0074] 6, which is an exploded schematic view showing a push rod assembly 50 according to a third embodiment of the present disclosure. In the third embodiment, the same parts as in the first embodiment described above will not be described again, and the differences are as follows.

[0075] The limit portion 571 is a rivet 579 , and the rivet 579 is crimped to the first side portion 552 and / or the second side portion 553 of the second magnetic conductive body 55 .

[0076] 7, which is an exploded schematic view showing a push rod assembly 50 according to a fourth embodiment of the present disclosure. In the fourth embodiment, the same parts as those in the first embodiment will not be described again, and the difference is that a limit portion 571 is provided at a bottom portion 551 of a second magnetic conductive body 55.

[0077] Specifically, the second magnetic conductive body 55 includes a bottom portion 551, a first side portion 552, and a second side portion 553. Limit portions 571 are integrally provided in a protruding manner on each of two side edges facing the bottom portion 551 along the width direction D3 of the movable contactor 54. The first side portion 552 and the second side portion 553 are connected to both ends of the bottom portion 551 along the width direction D3 of the movable contactor 54. The first side portion 552 and the second side portion 553 are provided on two side edges facing each other in the width direction D3 of the movable contactor 54, respectively.

[0078] The base 52 includes a base 521, a first limit member 522 connected to the base 521 and arranged opposite each other, and a second limit member 523, and the first limit member 522 and the second limit member 523 are each provided with a limit hole 572.

[0079] 8, which is an exploded schematic view showing a push rod assembly 50 according to a fifth embodiment of the present disclosure. In the fifth embodiment, the same parts as those in the first embodiment will not be described again, and the differences are as follows.

[0080] The base 52 includes a base portion 521, and a first limit member 522 and a second limit member 523 connected to the base portion 521 and arranged opposite each other, the first limit member 522 and the second limit member 523 each having a limit hole 572. The movable member 53 further includes a fixed member 58 fixedly connected to the second magnetic conductive body 55, and limit portions 571 are provided on opposite sides of the fixed member 58.

[0081] The first limit member 522, the second limit member 523, and the base 521 may be molded by integral injection molding, but are not limited to this.

[0082] The fixed member 58 has a hole 581, the elastic member 56 is provided with the hole 581, and both ends of the elastic member 56 abut against the second magnetic conductive body 55 and the base 52, respectively.

[0083] 9, which is an exploded schematic view showing a push rod assembly 50 according to a sixth embodiment of the present disclosure. In the sixth embodiment, the same parts as those in the first embodiment will not be described again, and the differences are as follows.

[0084] The limit portions 571 are provided in protrusions on two opposing side edges of the base 52 of the push rod assembly 50. The movable member 53 further includes a fixed member 58 fixedly connected to the second magnetic conductive body 55, and the fixed member 58 is provided with a limit hole 572.

[0085] The fixing member 58 has an inverted U-shaped structure, and the positions of the first end 573 and the second end 574 of the limit hole 572 provided in the fixing member 58 are exactly opposite to those of the limit hole 572 in the first to fifth embodiments.

[0086] Specifically, as shown in FIG. 9, the first end 573 of the limit hole 572 is located downward, the second end 574 is located upward, and the hole diameter of the second end 574 is larger than the hole diameter of the first end 573.

[0087] As shown in FIGS. 2, 5 to 8, a first end 573 of the limit hole 572 is positioned upward, and a second end 574 is positioned downward.

[0088] It is understood that the examples / embodiments provided in the present disclosure can be combined with each other if no contradiction occurs, and will not be described one by one here.

[0089] It is to be understood that the present disclosure is not limited in its application to the detailed construction and arrangement of components presented herein. The present disclosure may have other embodiments and may be embodied and carried out in various forms. Such variations and modifications are within the scope of the present disclosure. The present disclosure as disclosed and limited herein should be understood to extend to all alternative combinations of two or more individual features mentioned or apparent in the text and / or drawings. All of these various combinations constitute multiple alternative aspects of the present disclosure. The embodiments described herein detail the best known ways of implementing the present disclosure and will enable those skilled in the art to utilize the present disclosure. [Explanation of symbols]

[0090] 10, contact container 101, contact chamber 11a, insulating cover 11. Ceramic cover 12. Flange member 13. York board 131, first through hole 20, Fixed contact pullout end 30, connecting member 40, first magnetic conductive body 50. Push rod assembly 51, rod part 52, bass 521, base 522, first limit member 523, second limit member 524, the second arc surface 53. Movable parts 54, movable contactor 55, second conductive body 551, bottom 552, first side 553, second side 56. Elastic member 57. Limit structure 571, Limit 571a, first arc surface 572, limit hole 573, the first end of the limit hole 574, the second end of the limit hole 575, the first plane 576, the second plane 577, the first slope 578, the second slope 579 - Rivet 58, fixing member 581, perforation 1100, Housing 1110, first casing 1120, second casing 1200, electromagnet unit 1210, Coil bobbin 1220, coil 1230, fixed core 1231, second through hole 1240, moving core 1250, reset member 1410, metal cover D1, direction of movement D2, lengthwise D3, width direction

Claims

1. A push rod assembly for use in a relay, comprising: The push rod assembly With the base, a movable member movably connected to the base; an elastic member having one end abutting the base and the other end abutting the movable member, and providing an elastic force that causes the movable member to tend to move toward the fixed contact lead end of the relay; a limit structure connected to the base and the movable member, used to limit the range of movement of the movable member relative to the base, including a limit hole and a limit portion that fit together, the limit portion being movably disposed within the limit hole; A push rod assembly characterized by:

2. the limit hole includes a first end and a second end arranged opposite to each other along a moving direction of the movable member, and the hole diameter of the second end is larger than the hole diameter of the first end; When the movable member is separated from the fixed contact lead-out end, the limit portion is positioned at the first end of the limit hole.

2. The push rod assembly of claim 1.

3. The hole diameter of the limit hole gradually increases in a direction from the first end toward the second end of the limit hole.

3. The push rod assembly of claim 2.

4. The hole wall of the limit hole includes a first flat surface and a second flat surface that are arranged opposite to each other, and a first inclined surface and a second inclined surface that are arranged opposite to each other, and one end of the first inclined surface and one end of the second inclined surface are connected to both ends of the first flat surface, respectively, and the other end of the first inclined surface and the other end of the second inclined surface are connected to both ends of the second flat surface, respectively.

4. The push rod assembly of claim 3.

5. The limit portion has a first arcuate surface, and when the limit portion is located at the first end of the limit hole, the first arcuate surface is used to realize the limit with the limit hole.

3. The push rod assembly of claim 2.

6. The limit portion is provided on the movable member, and the limit hole is provided on the base.

2. The push rod assembly of claim 1.

7. The movable member includes a movable contact and a second magnetic conductive body fixedly connected to the movable contact, and the limit portion is provided on the second magnetic conductive body.

7. The push rod assembly of claim 6.

8. The second magnetic conductive body is The bottom and a first side portion and a second side portion connected to both ends of the bottom portion along the width direction of the movable contactor, provided on two opposing sides of the movable contactor in the width direction, and each provided with the limit portion; The base includes a base portion, and a first limit member and a second limit member connected to the base and arranged opposite to each other, the first side portion being provided corresponding to the first limit member, the second side portion being provided corresponding to the second limit member, and the first limit member and the second limit member being provided with the limit hole, respectively.

8. The push rod assembly of claim 7.

9. A side surface of the first limit member facing the first side portion and a side surface of the second limit member facing the second side portion each include a second arcuate surface.

9. The push rod assembly of claim 8.

10. the first side portion and the second side portion are located between the first limit member and the second limit member, The limit portion is integrally provided in a protruding manner on the side of the first side portion that is spaced apart from the second side portion and on the side of the second side portion that is spaced apart from the first side portion.

9. The push rod assembly of claim 8.

11. The limit portion has a protruding structure.

11. The push rod assembly of claim 10.

12. The limit portion is a rivet, and the rivet is fastened to the second magnetic conductive body by crimping.

9. The push rod assembly of claim 8.

13. The second magnetic conductive body is a bottom portion provided with the limit portion; The movable contactor includes a first side portion and a second side portion connected to both ends of the bottom portion along the width direction of the movable contactor and disposed on two opposing sides of the movable contactor in the width direction.

8. The push rod assembly of claim 7.

14. The movable member is A movable contact; a second magnetic conductive body fixedly connected to the movable contact; a fixed member fixedly connected to the second magnetic conductive body and having the limit portion; 7. The push rod assembly of claim 6.

15. The fixing member has a hole, the elastic member is provided with the hole, and the other end of the elastic member abuts against the second magnetic conductive body.

15. The push rod assembly of claim 14.

16. The base has the limit portion, and the movable member has A movable contact; a second magnetic conductive body fixedly connected to the movable contact; a fixed member fixedly connected to the second magnetic conductive body and having the limit hole; 2. The push rod assembly of claim 1.

17. A relay, A push rod assembly according to any one of claims 1 to 16. A relay characterized by:

18. The relay is a contact vessel, the push rod assembly being movable relative to the contact vessel; a first magnetic conductive body disposed within the contact vessel and fixed to the contact vessel; Here, the first magnetic conductive body is used to form a magnetic circuit with the second magnetic conductive body of the push rod assembly.

18. The relay of claim 17.

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