Relay

Abstract

The present application discloses a relay, including a dynamic spring assembly, a push rod assembly, a limit assembly and an elastic assembly. The dynamic spring assembly includes a dynamic contact piece; the push rod assembly is used to push the dynamic spring assembly to move so that the dynamic contact piece contacts or separates from the static contact lead-out end; the limit assembly is connected to one of the push rod assembly and the dynamic spring assembly, and is used to limit the dynamic spring assembly from rotating relative to the push rod assembly around the axis of the push rod assembly. When the dynamic contact piece is separated from the static contact lead-out end, there is a gap between the limit assembly and the other of the push rod assembly and the dynamic spring assembly along the direction of movement of the dynamic contact piece; the elastic assembly is used to provide contact pressure.

Description

Technical Field

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

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

[0003] A high-voltage DC relay is a type of relay. A high-voltage DC relay in the prior art includes a pair of static contact leads and a moving assembly. The moving assembly includes a moving contact piece and a push rod assembly. The moving contact piece is mounted on the push rod assembly through a contact bracket and an elastic assembly. In the overtravel stage, the moving contact piece contacts a pair of static contact leads, the push rod assembly continues to move upward, and the elastic assembly is compressed to form contact pressure.

[0004] However, the moving contact piece of the high-voltage DC relay in the prior art is prone to rotate relative to the push rod assembly, causing excessive deflection of the moving contact piece, resulting in inconsistent contact positions of the moving and static contacts, unstable contact resistance, and affecting the reliability of the relay. Utility Model Content

[0005] The embodiment of the present application provides a relay that can effectively reduce the rotation of a moving contact piece relative to a push rod assembly.

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

[0007] A dynamic spring assembly, including a dynamic contact piece;

[0008] A push rod assembly, used to push the dynamic spring assembly to move so that the dynamic contact piece contacts or separates from the static contact lead-out end;

[0009] a limit assembly connected to one of the push rod assembly and the dynamic spring assembly, and used to limit the dynamic spring assembly from rotating relative to the push rod assembly around the axis of the push rod assembly, wherein when the dynamic contact piece is separated from the static contact lead-out end, a gap is formed between the limit assembly and the other of the push rod assembly and the dynamic spring assembly along the direction of movement of the dynamic contact piece; and

[0010] An elastic component for providing contact pressure.

[0011] According to some embodiments of the present application, the limiting assembly is connected to one of the push rod assembly and the dynamic spring assembly through a first anti-rotation structure, and the limiting assembly cooperates with the other one of the push rod assembly and the dynamic spring assembly through a second anti-rotation structure.

[0012] According to some embodiments of the present application, the limiting component is a first reed.

[0013] According to some embodiments of the present application, the first spring leaf and the dynamic spring assembly together form a receiving cavity, and the elastic assembly is accommodated in the receiving cavity.

[0014] According to some embodiments of the present application, the relay further includes a pair of static contact lead-out terminals, and the two ends of the moving contact piece along the first direction are used to contact or separate from the pair of static contact lead-out terminals respectively; wherein the first direction is the arrangement direction of the pair of static contact lead-out terminals;

[0015] The first spring sheet includes a first base, a first spring arm and a first limiting portion, the first anti-rotation structure of the first base is connected to one of the push rod assembly and the dynamic spring assembly, and at least one of the first spring arms is disposed at both ends of the first base along the first direction, and the first limiting portion is disposed at one end of the first spring arm away from the first base, and the first limiting portions are disposed opposite to each other along the first direction;

[0016] The first limiting portion cooperates with the other two ends of the push rod assembly and the dynamic spring assembly along the first direction through the second anti-rotation structure and has the gap.

[0017] According to some embodiments of the present application, the relay further includes a pair of static contact lead-out terminals, and the two ends of the moving contact piece along the first direction are used to contact or separate from the pair of static contact lead-out terminals respectively; wherein the first direction is the arrangement direction of the pair of static contact lead-out terminals;

[0018] The first spring sheet includes a first base, a first spring arm and a first limiting portion, the first base is connected to one of the push rod assembly and the dynamic spring assembly through a first anti-rotation structure, and at least one of the first spring arms is disposed at both ends of the first base along the first direction, and the first limiting portion is disposed at one end of the first spring arm away from the first base, and the first limiting portions are disposed opposite to each other along the first direction;

[0019] The first limiting portion cooperates with the other two ends of the push rod assembly and the dynamic spring assembly along the first direction through the second anti-rotation structure and has the gap.

[0020] According to some embodiments of the present application, the first spring arm has a connecting arm and a bending arm, one end of the connecting arm is connected to the first base, and the other end is connected to the bending arm.

[0021] According to some embodiments of the present application, the width of one end of the connecting arm connected to the first base is greater than the width of one end of the connecting arm connected to the bending arm, and / or the width of the connecting arm gradually decreases from the first base toward the bending arm.

[0022] According to some embodiments of the present application, the second anti-rotation structure includes at least two second anti-rotation through holes and at least two second anti-rotation protrusions, the second anti-rotation through holes are arranged in the first limiting portion, and the second anti-rotation protrusion is arranged in one of the push rod assembly and the dynamic spring assembly, and when the dynamic contact piece is in contact or separation with the static contact lead-out end, the second anti-rotation protrusion is always located in the second anti-rotation through hole.

[0023] According to some embodiments of the present application, at least one second anti-rotation through hole is respectively provided in the first limiting portion.

[0024] According to some embodiments of the present application, the second anti-rotation through hole is an elliptical hole, wherein the major axis of the elliptical hole is parallel to the first direction, so that the elliptical hole can move in the first direction and be limited in a third direction, wherein the second direction is the direction of movement of the moving contact piece, and the third direction is perpendicular to the first direction and the second direction.

[0025] According to some embodiments of the present application, the second anti-rotation protrusion is arranged on a surface of the moving contact piece facing the first limiting portion.

[0026] According to some embodiments of the present application, the first limiting portion further includes a convex pad, which is arranged around the second anti-rotation through hole and faces the moving contact piece.

[0027] According to some embodiments of the present application, the hole wall of the second anti-rotation through hole is folded and extended in a direction away from the moving contact piece.

[0028] According to some embodiments of the present application, the height of the second anti-rotation protrusion is greater than the depth of the gap.

[0029] According to some embodiments of the present application, the first anti-rotation structure includes a first anti-rotation through hole and a first anti-rotation protrusion, the first anti-rotation through hole is arranged on the first reed leaf, the first anti-rotation protrusion is arranged on one of the push rod assembly and the dynamic spring assembly, and the first anti-rotation protrusion passes through the first anti-rotation through hole.

[0030] According to some embodiments of the present application, the push rod assembly includes a base, and the first anti-rotation through hole and the first anti-rotation protrusion are at least two. The first anti-rotation through hole is arranged on the first base, and the first anti-rotation protrusion is arranged on the base to prevent the first base from rotating around the axis of the push rod assembly.

[0031] According to some embodiments of the present application, the limit assembly can be deformed, and after the overtravel ends, the limit assembly contacts the dynamic spring assembly and deforms.

[0032] According to some embodiments of the present application, after the overtravel ends, the limit assembly and the dynamic spring assembly are in contact without deformation.

[0033] According to some embodiments of the present application, after the overtravel ends, the limit assembly and the dynamic spring assembly are out of contact.

[0034] According to some embodiments of the present application, the elastic component is a spring, and the spring is used to provide contact pressure.

[0035] According to some embodiments of the present application, one end of the spring abuts against the limiting assembly, and the other end of the spring abuts against the dynamic spring assembly.

[0036] According to some embodiments of the present application, the relay further includes a pair of static contact lead-out terminals, and the two ends of the moving contact piece along the first direction are used to contact or separate from the pair of static contact lead-out terminals respectively; wherein the first direction is the arrangement direction of the pair of static contact lead-out terminals; the second direction is defined as the direction of movement of the moving contact piece, and the third direction is perpendicular to the first direction and the second direction,

[0037] Along the third direction, the dynamic spring assembly includes a plurality of dynamic contact pieces.

[0038] According to some embodiments of the present application, the relay further includes a first magnetic conductor;

[0039] The first magnetic conductor is arranged on a side of the movable spring assembly facing the static contact lead-out end, and is used to resist the electromotive repulsive force.

[0040] According to some embodiments of the present application, the dynamic spring assembly also includes a second magnetic conductor, which is fixedly connected to the side of the dynamic contact piece facing away from the static contact lead-out end; the second magnetic conductor is used to form a magnetic circuit with the first magnetic conductor.

[0041] According to some embodiments of the present application, the elastic component is an elastic spring, the elastic spring is connected to the dynamic spring component and the push rod component, and the elastic spring is used to provide contact pressure.

[0042] According to some embodiments of the present application, the relay further includes a pair of static contact lead-out terminals, and the two ends of the moving contact piece along the first direction are used to contact or separate from the pair of static contact lead-out terminals respectively; wherein the first direction is the arrangement direction of the pair of static contact lead-out terminals;

[0043] The limiting assembly is connected to the push rod assembly in a limiting manner along the first direction; and / or, the limiting assembly is connected to the dynamic spring assembly in a limiting manner along the first direction; and / or, the limiting assembly is connected to the elastic assembly in a limiting manner along the first direction.

[0044] According to some embodiments of the present application, the push rod assembly includes a contact bracket, and the dynamic spring assembly is installed in the contact bracket through the elastic assembly.

[0045] One embodiment of the above application has at least the following advantages or beneficial effects:

[0046] The relay of the embodiment of the present application includes a dynamic spring assembly, a push rod, a limit assembly and an elastic assembly, the elastic assembly can provide contact pressure, the limit assembly is connected to one of the push rod assembly and the dynamic spring assembly, and can limit the dynamic spring assembly from rotating relative to the push rod assembly around the axis of the push rod assembly, and when the dynamic contact piece is separated from the static contact lead-out end, there is a gap between the limit assembly and the other of the push rod assembly and the dynamic spring assembly along the direction of movement of the dynamic contact piece. In this way, the consistency of the contact position between the dynamic contact piece and the static contact lead-out end can be ensured, the stability of the contact resistance can be enhanced, and the reliability of the relay can be improved. At the same time, since there is a gap between the limit assembly and the other of the push rod assembly and the dynamic spring assembly in the direction of movement of the dynamic contact piece, during the overtravel process, the limit assembly does not deform or the deformation is small, and therefore the action voltage of the product will not be affected.

[0047] In the relay of the embodiment of the present application, the limiting assembly is in the form of a spring sheet, and the first spring sheet is connected to one of the push rod assembly and the dynamic spring assembly through a first anti-rotation structure, and is connected to the other of the push rod assembly and the dynamic spring assembly through a second anti-rotation structure, thereby ensuring the consistency of the contact position of the moving contact piece and the static contact lead-out terminal.

[0048] In the relay of the embodiment of the present application, the second anti-rotation structure is formed by the cooperation of the second anti-rotation through hole and the second anti-rotation protrusion, and when the moving contact piece is in contact or separation with the static contact lead-out end, the second anti-rotation protrusion is always located in the second anti-rotation through hole, which can play an anti-rotation role, and the limit assembly does not deform or deforms very little during the over-travel process, and therefore will not affect the product's operating voltage.

[0049] In the relay of the embodiment of the present application, the limit assembly and the push rod assembly are limit-connected along the first direction; and / or the limit assembly and the dynamic spring assembly are limit-connected along the first direction; and / or the limit assembly and the elastic assembly are limit-connected along the first direction. In this way, the amplitude of movement of the dynamic spring assembly relative to the push rod assembly in the first direction can be reduced, thereby improving the overall impact resistance of the relay.

[0050] In the relay of the embodiment of the present application, the push rod assembly includes a contact bracket, and the dynamic spring assembly is installed in the contact bracket through the elastic assembly. Since the limit assembly limits the rotation of the dynamic spring assembly, it can reduce or even prevent the friction generated by the rotation of the dynamic contact piece to a certain extent, avoid the increase of contact resistance caused by scraping caused by friction, and avoid the generation of large noise. BRIEF DESCRIPTION OF THE DRAWINGS

[0051] Figure 1 is a schematic structural diagram of a relay according to a first exemplary embodiment.

[0052] Figure 2 yes Figure 1 AA section view.

[0053] Figure 3 yes Figure 1 Middle BB section view.

[0054] Figure 4 It is a schematic structural diagram of a moving assembly and a limiting assembly according to a first exemplary embodiment.

[0055] Figure 5 FIG. 1 is a schematic diagram showing a disconnected state of a moving contact piece and a stationary contact of a relay according to the first exemplary embodiment.

[0056] Figure 6 FIG. 1 is a schematic diagram showing a state in which a moving contact piece and a stationary contact of a relay are just in contact with each other according to the first exemplary embodiment.

[0057] Figure 7 It is a schematic diagram showing that the moving contact piece and the stationary contact of the relay are completely closed, the overtravel is completed, and the limit assembly and the moving contact piece are not in contact according to the first exemplary embodiment.

[0058] Figure 8 It is a schematic diagram showing that the moving contact piece and the stationary contact of the relay are completely closed, the overtravel is completed, and the limit assembly and the moving contact piece are in contact without deformation according to the second exemplary embodiment.

[0059] Fig. 9 yes Figure 8 Enlarged view of point I.

[0060] Fig.10It is a schematic diagram showing that the moving contact piece and the stationary contact of the relay are completely closed, the overtravel is completed, and the limit assembly and the moving contact piece are in contact and deformed according to the third exemplary embodiment.

[0061] Fig.11 yes Fig.10 An enlarged view of point II.

[0062] Fig.12 It is a schematic structural diagram of the limit assembly according to the above embodiment.

[0063] Fig.13 yes Fig.12 sectional view of .

[0064] Fig.14 It is a schematic diagram of the installation structure of the limit assembly and the push rod according to the above embodiment.

[0065] Fig.15 yes Fig.14 sectional view of .

[0066] Fig.16 FIG. 1 is a schematic diagram showing a disconnected state of a moving contact piece and a stationary contact of a relay according to a fourth exemplary embodiment.

[0067] Fig.17 FIG. 1 is a schematic diagram showing a state in which a moving contact piece and a stationary contact of a relay are just in contact with each other according to a fourth exemplary embodiment.

[0068] Fig.18 It is a schematic diagram showing that the moving contact piece and the stationary contact of the relay are completely closed, the overtravel is completed, and the limit assembly and the moving contact piece are not in contact according to the fourth exemplary embodiment.

[0069] Fig.19 It is a schematic diagram showing that the moving contact piece and the stationary contact of the relay are completely closed, the overtravel is completed, and the limit assembly and the moving contact piece are in contact without deformation according to the fifth exemplary embodiment.

[0070] Fig. 20 yes Fig.19 Enlarged view of III.

[0071] Fig.21 It is a schematic diagram showing that the moving contact piece and the stationary contact of the relay are completely closed, the overtravel is completed, and the limit assembly and the moving contact piece are in contact and deformed according to the sixth exemplary embodiment.

[0072] Fig. 22 yes Fig.21 Enlarged view of IV.

[0073] Fig.23 It is a schematic diagram of the structure of the limit assembly shown in embodiments four to six.

[0074] Fig.24 yes Fig.23 sectional view of .

[0075] Fig.25 It is a schematic diagram of the installation structure of the limit assembly and the push rod shown in embodiments four to six.

[0076] Fig.26 yes Fig.25 sectional view of .

[0077] Fig. 27 It is a schematic structural diagram of another elastic component and a limiting component according to the seventh exemplary embodiment.

[0078] Fig.28 is a schematic structural diagram of a third elastic component and a limiting component according to an eighth exemplary embodiment.

[0079] The reference numerals are described as follows:

[0080] 1000. Contact container

[0081] 1001. Contact Chamber

[0082] 1002. First through hole

[0083] 1100, Insulation cover

[0084] 1110, Ceramic cover

[0085] 1120, frame

[0086] 1200, Yoke Iron Plate

[0087] 1210, second through hole

[0088] 2000、Static contact terminal

[0089] 3000, dynamic components

[0090] 3100、Dynamic spring assembly

[0091] 3110, moving touch piece

[0092] 3111, second anti-rotation protrusion

[0093] 3200, Push rod assembly

[0094] 3210, Push rod

[0095] 3211, base

[0096] 3212, Rod

[0097] 3213, Card

[0098] 3220, contact bracket

[0099] 3221, top wall

[0100] 3222, side wall

[0101] 3223, card hole

[0102] 3230, limit assembly

[0103] 4000, Magnetic Circuit

[0104] 4100、Boiler

[0105] 4200, Coil

[0106] 4300, static iron core

[0107] 4400, Moving Iron Core

[0108] 4410,Through hole

[0109] 4500, reset parts

[0110] 5000, Metal Cover

[0111] 6100, first magnetic conductor

[0112] 6200, second magnetic conductor

[0113] 100, 200, first reed

[0114] 110, 210, first base

[0115] 111, 211, first limit hole

[0116] 120, 220, first spring arm

[0117] 121, 221, first limit part

[0118] 122, 222, second anti-rotation through hole

[0119] 123, 223, convex pad

[0120] 112. First anti-rotation through hole

[0121] 321. First anti-rotation protrusion

[0122] 2201、Connecting Arm

[0123] 2201, Bending Arm

[0124] 300. Elastic components

[0125] 401. The first anti-rotation structure

[0126] 402. Second anti-rotation structure

[0127] 500, Accommodation Chamber

[0128] 600, Elastic Reed

[0129] 601, 602, elastic spring end

[0130] H1, Depth of the second anti-rotation through hole

[0131] H3, height of the second anti-rotation protrusion

[0132] T1, thickness of the first limiting portion. DETAILED DESCRIPTION

[0133] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in a variety of forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this application will be comprehensive and complete and fully convey the concepts of the example embodiments to those skilled in the art. The same reference numerals in the figures represent the same or similar structures, and thus their detailed description will be omitted.

[0134] like Figures 1 to 3 As shown, the relay according to the first embodiment of the present application includes a contact container 1000 , a pair of static contact lead terminals 2000 , a moving component 3000 and a magnetic circuit portion 4000 .

[0135] It is understood that the terms "including" and "having" and any variations thereof in the embodiments of the present application are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device comprising a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or components inherent to these processes, methods, products or devices.

[0136] It should be noted that the contact container 1000 is a stationary component, which is used to accommodate the contact group and is mainly a housing and has a chamber. In addition, the contact container 1000 can be formed by connecting multiple components in a predetermined assembly manner.

[0137] The contact container 1000 has a contact chamber 1001 therein. The contact container 1000 may include an insulating cover 1100 and a yoke plate 1200 . The insulating cover 1100 is disposed on one side surface of the yoke plate 1200 . The insulating cover 1100 and the yoke plate 1200 together enclose the contact chamber 1001 .

[0138] The insulating cover 1100 includes a ceramic cover 1110 and a frame piece 1120. The ceramic cover 1110 is connected to the yoke iron plate 1200 through the frame piece 1120. The frame piece 1120 can be a metal piece with an annular structure, such as an iron-nickel alloy, and one end of the frame piece 1120 is connected to the opening edge of the ceramic cover 1110, for example, by laser welding, brazing, resistance welding, gluing, etc. The other end of the frame piece 1120 is connected to the yoke iron plate 1200, which can also be done by laser welding, brazing, resistance welding, gluing, etc. A frame piece 1120 is arranged between the ceramic cover 1110 and the yoke iron plate 1200 to facilitate the connection between the ceramic cover 1110 and the yoke iron plate 1200.

[0139] The contact container 1000 also has a pair of first through holes 1002, and the first through holes 1002 are connected to the contact chamber 1001. The first through holes 1002 are used for the static contact lead-out terminal 2000 to pass through. In the embodiment of the present application, the first through holes 1002 are opened on the ceramic cover 1110.

[0140] A pair of static contact lead-out terminals 2000 are connected to the ceramic cover 1110 of the contact container 1000, and at least a portion of each static contact lead-out terminal 2000 is located in the contact chamber 1001. One of the pair of static contact lead-out terminals 2000 serves as a terminal for current inflow, and the other serves as a terminal for current outflow.

[0141] A pair of static contact lead-out terminals 2000 are disposed in a pair of first through holes 1002 in a one-to-one correspondence, and are connected to the ceramic cover 1110 , for example, by welding.

[0142] The bottom of the static contact lead-out terminal 2000 serves as a static contact, and the static contact may be integrally or separately arranged at the bottom of the static contact lead-out terminal 2000 .

[0143] Please continue reading Figures 1 to 3 The movable assembly 3000 includes a movable spring assembly 3100, a push rod assembly 3200 and an elastic assembly 300. The movable spring assembly 3100 is disposed in the insulating cover 1100 and is mounted on the push rod assembly 3200 through the elastic assembly 300. Both ends of the movable spring assembly 3100 along the first direction D1 are used to contact or separate with a pair of static contact lead-out terminals 2000. The first direction D1 is the arrangement direction of the pair of static contact lead-out terminals 2000.

[0144] The dynamic spring assembly 3100 includes a dynamic contact piece 3110, and the dynamic contact piece 3110 may include a dynamic spring body and dynamic contacts arranged at both ends of the dynamic spring body. The dynamic contact may be a separate part and connected to the dynamic spring body. Of course, the dynamic contact may also be integrally formed on the dynamic spring body.

[0145] The number of the movable contact pieces 3110 included in the movable spring assembly 3100 is at least one, for example, one, two, three, etc. In the embodiment of the present application, the movable spring assembly 3100 includes one movable contact piece 3110. One end of the movable contact piece 3110 in the first direction D1 is used to contact or separate with the static contact of one of the static contact lead-out terminals 2000, and the other end of the movable contact piece 3110 in the first direction D1 is used to contact or separate with the static contact of the other static contact lead-out terminal 2000.

[0146] The dynamic spring assembly 3100 may further include a second magnetic conductor 6200, which is fixedly connected to a side of the dynamic contact piece 3110 that faces away from the static contact lead-out terminal 2000. The function of the second magnetic conductor 6200 will be described below.

[0147] The number of movable contact pieces 3110 and second magnets 6200 included in the movable spring assembly 3100 corresponds. Specifically, when the number of movable contact pieces 3110 is one, the number of second magnets 6200 is also one; when the number of movable contact pieces 3110 is multiple (including two), the number of second magnets 6200 is also multiple. The multiple second magnets 6200 are fixedly connected to the side of the multiple movable contact pieces 3110 facing away from the static contact lead-out terminal 2000 in a one-to-one correspondence.

[0148] In this embodiment, the number of the moving contact piece 3110 is one, and the number of the second magnetizers 6200 may also be multiple. For example, at least one opening is provided in the middle of the moving contact piece 3110, and two adjacent second magnetizers 6200 among the multiple second magnetizers 6200 are inserted into one opening.

[0149] like Figure 4 As shown, the movement direction of the moving contact piece 3110 is defined as the second direction D2, and the direction perpendicular to the first direction D1 and the second direction D2 is defined as the third direction D3. The push rod assembly 3200 includes a push rod 3210 and a contact bracket 3220. The contact bracket 3220 includes a top wall 3221 and two side walls 3222, and the two side walls 3222 are respectively connected to the two side edges of the top wall 3221 along the third direction D3, that is, an inverted U-shaped bracket is formed. The dynamic spring assembly 3100 is installed in the contact bracket 3220 through the elastic assembly 300. The upper end of the push rod 3210 is connected to the bottom ends of the two side walls 3222 of the contact bracket 3220.

[0150] A clamping hole 3223 is provided at the bottom end of each side wall 3222 of the contact support 3220. The push rod 3210 includes a base 3211 and a rod portion 3212, and the base 3211 is connected to one axial end of the rod portion 3212. Clamps 3213 are provided on both sides of the base 3211, and the two clamps 3213 are respectively clamped into the two clamping holes 3223 of the contact support 3220, so as to fix the base 3211 and the contact support 3220. Figure 2 and Figure 3 The elastic component 300 is disposed between the dynamic spring component 3100 and the base 3211, and is used to apply an elastic force to the dynamic spring component 3100 to move toward the top wall 3221 to provide contact pressure. In the embodiment of the present application, one end of the elastic component 300 abuts against the dynamic spring component 3100, and the other end of the elastic component 300 is installed on the base 3211.

[0151] Of course, in other embodiments, the contact holder 3220 may also be other structures, which are not listed here one by one.

[0152] When there are multiple movable contact pieces 3110 , the multiple movable contact pieces 3110 are arranged side by side along the third direction D3 .

[0153] Please return to Figures 1 to 3 The yoke plate 1200 has a second through hole 1210, which penetrates two opposite sides of the yoke plate 1200 along the thickness direction of the yoke plate 1200, and the second through hole 1210 is connected to the contact chamber 1001 of the contact container 1000. The rod portion 3212 is movably disposed in the second through hole 1210 along the axial direction. The base 3211 at one axial end of the rod portion 3212 is disposed in the contact chamber 1001.

[0154] The relay further includes a metal cover 5000, which is connected to the side of the yoke plate 1200 facing away from the insulating cover 1100, and the metal cover 5000 covers the second through hole 1210 on the yoke plate 1200. The metal cover 5000 and the yoke plate 1200 enclose a chamber for accommodating the static iron core 4300 and the moving iron core 4400 of the magnetic circuit part 4000.

[0155] The magnetic circuit part 4000 includes a coil frame 4100, a coil 4200, a static iron core 4300, a moving iron core 4400 and a reset member 4500. The coil frame 4100 is in the shape of a hollow cylinder and is formed of an insulating material. The metal cover 5000 is inserted into the coil frame 4100. The coil 4200 surrounds the coil frame 4100. The static iron core 4300 is fixedly arranged in the metal cover 5000, and part of the static iron core 4300 extends into the second through hole 1210. The static iron core 4300 has a through hole 4410, which is arranged corresponding to the position of the second through hole 1210, for the rod portion 3212 to pass therethrough. The moving iron core 4400 is movably disposed in the metal cover 5000 and is disposed opposite to the static iron core 4300 along the axial direction of the rod 3212. The moving iron core 4400 is connected to the rod 3212 and is used to be attracted by the static iron core 4300 when the coil 4200 is energized. The moving iron core 4400 and the rod 3212 can be connected by screwing, riveting, welding or other methods.

[0156] The reset member 4500 is located inside the metal cover 5000 and is disposed between the static iron core 4300 and the moving iron core 4400, and is used to reset the moving iron core 4400 when the coil 4200 is powered off. The reset member 4500 can be a spring and is sleeved on the outside of the rod 3212.

[0157] It should be noted that when the coil 4200 is energized, the magnetic circuit portion 4000 can drive the rod portion 3212 to push the push rod assembly 3200 to move upward. When the moving contact piece 3110 contacts the static contact lead-out terminal 2000, the moving contact piece 3110 is stopped by the static contact lead-out terminal 2000, while the rod portion 3212 and the base 3211 will continue to move upward until the overtravel is completed.

[0158] like Figures 2 to 3 As shown, the relay of the embodiment of the present application further includes a first magnetic conductor 6100. The moving contact piece 3110 has a first side and a second side that are arranged opposite to each other along the second direction D2. The first side faces the static contact lead-out terminal 2000, and the second side faces away from the static contact lead-out terminal 2000. The first magnetic conductor 6100 is arranged on the first side of the moving contact piece 3110 and is arranged in the contact chamber 1001.

[0159] When the dynamic spring assembly 3100 only includes the dynamic contact piece 3110 but does not include the second magnetic conductor 6200, after the dynamic contact piece 3110 is energized, the first magnetic conductor 6100 is magnetized, thereby forming an attraction force on the dynamic contact piece 3110 in the direction of contact closure, and the attraction force can resist the electromotive repulsion force generated by the short-circuit current between the dynamic contact piece 3110 and the static contact lead-out terminal 2000, thereby preventing the dynamic contact piece 3110 from bouncing away from the static contact lead-out terminal 2000, thereby achieving the purpose of resisting short circuit. The anti-short circuit structure of the present application adopts a follow-up type, that is, the first magnetic conductor 6100 is fixedly connected to the top wall 3221 of the contact support 3220. Of course, in other embodiments, the first magnetic conductor 6100 can also be fixedly arranged relative to the insulating cover 1100, and the distance between the first magnetic conductor 6100 and the dynamic spring assembly can also be set in a variable distance type.

[0160] When the dynamic spring assembly 3100 includes the dynamic contact piece 3110 and the second magnetic conductor 6200 , the second magnetic conductor 6200 is fixedly connected to the dynamic contact piece 3110 , and the second magnetic conductor 6200 is used to form a magnetic conductive circuit with the first magnetic conductor 6100 .

[0161] When both ends of the moving contact piece 3110 are in contact with a pair of stationary contact lead-out terminals 2000, a magnetic conductive loop surrounding the moving contact piece 3110 is formed between the first magnetic conductive body 6100 and the second magnetic conductive body 6200. When a short-circuit current passes through the moving contact piece 3110, a magnetic attraction force is generated between the first magnetic conductive body 6100 and the second magnetic conductive body 6200 in the direction of contact pressure, and the magnetic attraction force can resist the electromotive force generated by the short-circuit current between the moving contact piece 3110 and the stationary contact lead-out terminals 2000, thereby ensuring that the moving contact piece 3110 and the stationary contact lead-out terminals 2000 do not bounce apart.

[0162] It is understandable that the second magnetic conductor 6200 and the movable contact piece 3110 may be fixedly connected by riveting, but the present invention is not limited thereto.

[0163] The first magnetic conductor 6100 and the second magnetic conductor 6200 may both be in a straight line shape or a U-shape. The first magnetic conductor 6100 and the second magnetic conductor 6200 may be made of magnetic conductive materials such as iron, cobalt, nickel, and alloys thereof.

[0164] Among them, when the dynamic spring assembly 3100 includes multiple dynamic contact pieces 3110 arranged side by side, the number of first magnetic conductors 6100 can be multiple, and the number of first magnetic conductors 6100 corresponds to the number of dynamic contact pieces 3110, and the multiple first magnetic conductors 6100 are respectively located on one side of the multiple dynamic contact pieces 3110 facing the static contact lead-out end 2000.

[0165] Of course, in other embodiments, when the dynamic spring assembly 3100 includes a plurality of dynamic contact pieces 3110 arranged side by side, the number of the first magnetic conductor 6100 may be one, and the first magnetic conductor 6100 spans across the plurality of dynamic contact pieces 3110 in the third direction D3.

[0166] like Figure 5 to Figure 6 As shown, the relay of the first embodiment of the present application also includes a limit assembly 3230, which is connected to the push rod assembly 3200 and is used to limit the rotation of the dynamic spring assembly 3100 relative to the push rod assembly 3200 around the axis of the push rod assembly 3200. When the moving contact piece 3110 of the dynamic spring assembly 3100 is separated from the static contact lead-out terminal 2000, there is a gap between the limit assembly 3230 and the dynamic spring assembly 3100 along the direction of movement of the moving contact piece 3110. In this way, the consistency of the contact position between the moving contact piece and the static contact lead-out terminal can be ensured, the stability of the contact resistance is enhanced, and the reliability of the relay is improved. At the same time, since there is a gap between the limit assembly and the dynamic spring assembly in the direction of movement of the moving contact piece, during the overtravel process, the limit assembly does not deform or the deformation is small, so it will not affect the operating voltage of the product.

[0167] It is understandable that the connection between the limit assembly 3230 and the push rod assembly 3200 can be direct or indirect. When the limit assembly 3230 is indirectly connected to the push rod assembly 3200, the limit assembly 3230 can be connected to the push rod assembly 3200 through the elastic assembly 300, that is, the elastic assembly 300 is directly connected to the push rod assembly 3200, and the limit assembly 3230 is directly connected to the elastic assembly 300.

[0168] The relay of the embodiment of the present application includes a moving contact piece 3110, a push rod 3210, an elastic component 300 and a limit component 3230. The elastic component 300 can provide contact pressure, and the limit component 3230 can limit the rotation of the moving contact piece 3110 relative to the push rod 3210, thereby ensuring the consistency of the contact position between the moving contact piece and the static contact lead-out terminal, enhancing the stability of the contact resistance, and improving the reliability of the relay. In addition, when the moving contact piece 3110 is separated from the static contact lead-out terminal 2000, there is a gap between the limit component 3230 and the moving contact piece 3110. The limit component does not deform or deforms slightly during the overtravel process, so it will not affect the operating voltage of the product.

[0169] In the embodiment of the present application, the limit assembly 3230 can limit the movable contact piece 3110 to rotate about an axis perpendicular to the plane where the movable contact piece 3110 is located. That is, the limit assembly 3230 can limit the movable contact piece 3110 to rotate around the axis of the push rod assembly 3200 relative to the push rod assembly 3200.

[0170] in, Figure 5 The figure shows the disconnected state of the moving contact and the stationary contact of the relay. Figure 6 What is shown is the state where the moving contact and the stationary contact of the relay are just in contact.

[0171] like Figure 7 and Fig.14 As shown, in the first embodiment of the present application, the limiting component 3230 is a first reed 100. As an example, the first reed 100 is a sheet structure made of a metal material, such as stainless steel, and is formed by bending.

[0172] The first spring leaf 100 is mounted on the base 3211 of the push rod 3210 through the first anti-rotation structure 401 and the second anti-rotation structure 402 (see Fig. 9 ) cooperates with the movable contact piece 3110, and has a gap with the side surface of the movable contact piece 3110 facing the push rod 3210. The first reed 100 is disposed on the second side of the movable contact piece 3110. In other embodiments, the first reed 100 may also have a gap with the side surface of the second magnetizer 3200 facing the push rod 3210.

[0173] In this embodiment, the moving contact piece 3110 and the static contact lead-out terminal 2000 are in full contact and complete the overtravel, and during this process, a gap is always maintained between the first spring piece 100 and the moving contact piece 3110 .

[0174] In this embodiment, if Figure 12 to Figure 13 As shown, the first spring piece 100 includes a first base 110, a first spring arm 120 and a first limiting portion 121. The first base 110 is connected to the push rod assembly 3200 through the first limiting hole 111 and the first anti-rotation structure 401, and at least one first spring arm 120 is provided at both ends of the first base 110 along the first direction D1. The first spring arm 120 is provided with a first limiting portion 121 at one end away from the first base 110, and the first limiting portions 121 are arranged opposite to each other along the first direction D1. The first limiting portions 121 correspond to the two ends of the moving contact piece 3110 along the first direction D1 and have a gap. The first spring piece 100 is formed by a multi-stage connection, and the first limiting portions 121 are arranged opposite to each other along the first direction D1. The limiting assembly has a simple structure and a small volume, prevents the moving contact piece 3110 from rotating, and minimizes the impact on the action voltage of the product.

[0175] The first spring sheet 100 and the dynamic spring assembly 3100 together form a receiving chamber 500, and the elastic assembly 300 is received in the receiving chamber 500. By arranging the elastic assembly 300 in the receiving chamber 500, the structure of the dynamic assembly 3000 can be made more compact, which is conducive to miniaturization of the relay.

[0176] When the dynamic spring assembly 3100 includes a plurality of dynamic contact pieces 3110, at least two first spring arms 120 arranged side by side along the third direction D3 are provided at both ends of the first direction D1 of the first base portion 110, and the two first spring arms 120 corresponding to the first spring piece 100 in the first direction D1 are respectively in contact with the two ends of the first direction D1 of a dynamic contact piece 3110. It can be seen that in the embodiment of the present application, each dynamic contact piece 3110 corresponds to a pair of first spring arms 120, so that when the contact gaps of the plurality of dynamic contact pieces 3110 and the static contact lead-out end are inconsistent, the plurality of dynamic contact pieces 3110 will not interfere with each other.

[0177] In this embodiment, the second anti-rotation structure 402 includes a second anti-rotation through hole 122 and a second anti-rotation protrusion 3111. The second anti-rotation through hole 122 is provided on the first limiting portion 121, and the second anti-rotation protrusion 3111 is provided on the surface of the movable contact piece 3110 facing the first limiting portion 121 (see Fig. 9 and Fig.11 ), when the movable contact piece 3110 is in contact with or separated from the static contact lead-out terminal 2000, the second anti-rotation protrusion 3111 is always located in the second anti-rotation through hole 122. The second anti-rotation protrusion 3111 cooperates with the second anti-rotation through hole 122 to prevent the movable contact piece 3110 from rotating.

[0178] In this embodiment, the second anti-rotation protrusion 3111 and the second anti-rotation through hole 122 are clearance-fitted.

[0179] In this embodiment, the second anti-rotation through hole 122 is an elliptical hole, and the major axis of the elliptical hole is parallel to the first direction D1, so that the second anti-rotation protrusion 3111 can move in the first direction D1 in the elliptical hole and be positioned in the third direction D3. The second anti-rotation through hole 122 can also be a round hole or a square hole, and the shape of the second anti-rotation protrusion 3111 can also be a cylindrical, elliptical or square column, etc., as long as it can be inserted into the second anti-rotation through hole 122 and can move in the second anti-rotation through hole 122 along the first direction D1.

[0180] In this embodiment, the hole wall of the second anti-rotation through hole 122 is folded and extended in a direction away from the movable contact piece 3110. This can prevent the inner wall of the second anti-rotation through hole 122 from rubbing against the second anti-rotation protrusion 3111 to generate scraps.

[0181] In this embodiment, the first position limiting portion 121 further includes a convex pad 123, which is disposed around the second anti-rotation through hole 122 and faces the movable contact piece 3110. The provision of the convex pad 123 can improve the flatness of the first position limiting portion 121.

[0182] In this embodiment, the height H3 of the second anti-rotation protrusion 3111 (see Fig. 9 ) is greater than the depth of the gap, so that the second anti-rotation protrusion 3111 can limit the first reed 100.

[0183] like Figure 14 to Figure 15 As shown, in this embodiment, the first reed 100 is connected to the base 3211 of the push rod 3210 through the first anti-rotation structure 401 .

[0184] The first anti-rotation structure 401 includes a first anti-rotation through hole 112 and a first anti-rotation protrusion 321. The first anti-rotation through hole 112 is provided on the first spring piece 100, and the first anti-rotation protrusion 321 is provided on the base 3211. The first anti-rotation protrusion 321 passes through the first anti-rotation through hole 112. By providing the first anti-rotation structure, the first spring piece will not rotate relative to the base, thereby ensuring the consistency of the contact position between the moving contact piece and the static contact lead-out terminal, enhancing the stability of the contact resistance, and improving the reliability of the relay. There are at least two first anti-rotation through holes 112 and at least two first anti-rotation protrusions 321.

[0185] In other embodiments, the first anti-rotation through hole 112 and the first anti-rotation protrusion 321 can be both one, and the shape of the first anti-rotation through hole 112 is a non-circular shape such as a rectangle, an ellipse, or a triangle. In this case, the first position-limiting hole 111 not only plays a position-limiting role, but also can cooperate with the first anti-rotation structure 401 to achieve an anti-rotation function. The first anti-rotation protrusion 321 is matched in shape with the first anti-rotation through hole 112, and is inserted into the first anti-rotation through hole 112, thereby preventing the first reed 100 and the push rod 3210 from rotating relative to each other.

[0186] In other embodiments, the first anti-rotation structure 401 may also include a riveted structure, a welded structure, an adhesive structure, an injection molding structure, etc.

[0187] In another embodiment, the first anti-rotation structure 401 may further include a fastener, which fastens the first reed 100 and the push rod assembly 3200 .

[0188] In the embodiment of the present application, the first spring piece 100 is connected to the push rod assembly 3200 through the first anti-rotation structure 401, and cooperates with the dynamic spring assembly 3100 through the second anti-rotation structure 402 to prevent the dynamic spring assembly 3100 from rotating relative to the push rod 3210, thereby ensuring the consistency of the contact position between the dynamic contact piece and the static contact lead-out end. In addition, since the dynamic spring assembly 3100 will not rotate, it can reduce or even prevent the dynamic spring assembly 3100 from contacting the side wall of the contact bracket 3220 to a certain extent, thereby avoiding the generation of a large corrugated sound (metal friction noise). It avoids the increase in the matching clearance due to the increase in the number of frictions and the increase in wear, which in turn leads to an increase in the deflection force and the friction resistance. Furthermore, it can also reduce the metal particles generated by the mutual friction between the dynamic spring assembly 3100 and the contact bracket 3220, reduce the probability of metal particles falling on the contact surface of the contact, and thus reduce the quality risk of increasing the contact resistance or even non-conduction.

[0189] In one embodiment, the limit assembly 3230 is connected to the push rod assembly 3200 in a limit connection along the first direction D1; and / or, the limit assembly 3230 is connected to the dynamic spring assembly 3100 in a limit connection along the first direction D1; and / or, the limit assembly 3230 and the elastic assembly 300 are connected in a limit connection along the first direction D1. In this way, the amplitude of the dynamic spring assembly 3100 moving relative to the push rod assembly 3200 in the first direction D1 can be reduced, thereby improving the overall impact resistance of the relay.

[0190] Preferably, the limit assembly 3230 is connected to the push rod assembly 3200 in a limit connection along the first direction D1, and the limit assembly 3230 is connected to the dynamic spring assembly 3100 in a limit connection along the first direction D1. In this way, when the relay encounters a large impact, the moving contact and the static contact will not shift, avoiding unstable contact resistance.

[0191] like Figures 8 to 9 As shown, the relay of the second embodiment has a substantially similar structure in basic structure to the relay of the first embodiment. Therefore, in the following description of the relay of the second embodiment, the structure already described in the first embodiment is not repeated. In addition, the same reference numerals are given to the same structure as the structure of the relay described in the first embodiment. Therefore, in the following description of this embodiment, the differences from the relay of the first embodiment are mainly described.

[0192] In the second embodiment of the present application, the moving contact piece 3110 and the static contact lead-out terminal 2000 are in full contact and have completed the overtravel. During this process, the first spring piece 100 and the moving contact piece 3110 change from having a gap at the beginning to being in contact but without deformation at the end. Fig. 9 The surface of the movable contact piece 3110 facing the first reed piece 100 is provided with a second anti-rotation protrusion 3111, and the second anti-rotation protrusion 3111 is always located in the first reed piece 100. Since the relative positions of the second anti-rotation through hole 122 of the first reed piece 100 and the second anti-rotation protrusion 3111 along the first direction do not change, the first reed piece 100 does not deform when the overtravel is completed, and the first reed piece 100 only contacts the movable contact piece 3110, so that during the operation of the relay, the movable contact piece 3110 is prevented from rotating and the first reed piece 100 is prevented from participating in the overtravel and affecting the operating voltage of the product.

[0193] like Figure 10 to Figure 11 As shown, the relay of the third embodiment has a substantially similar structure in basic structure to the relay of the first embodiment. Therefore, in the following description of the relay of the third embodiment, the structure already described in the first embodiment is not repeated. In addition, the same reference symbols are given to the same structures as those of the relay described in the first embodiment. Therefore, in the following description of this embodiment, the differences from the relay of the first embodiment are mainly described.

[0194] In the third embodiment of the present application, the moving contact piece 3110 and the static contact lead-out terminal 2000 are in full contact and have completed the overtravel. During this process, the first spring piece 100 and the moving contact piece 3110 change from having a gap at the beginning to having contact and deformation at the end. Fig.11The surface of the movable contact piece 3110 facing the first reed piece 100 is provided with a second anti-rotation protrusion 3111, and the second anti-rotation protrusion 3111 is always located in the first reed piece 100. Since the relative positions of the second anti-rotation through hole 122 of the first reed piece 100 and the second anti-rotation protrusion 3111 along the first direction are changed, the first reed piece 100 is deformed when the overtravel is completed, and the first reed piece 100 contacts and deforms the movable contact piece 3110, so that during the operation of the relay, the movable contact piece 3110 is prevented from rotating and the first reed piece 100 is prevented from excessively participating in the overtravel, which affects the operating voltage of the product.

[0195] like Figures 16 to 18 As shown, the relay of the fourth embodiment has a substantially similar structure in basic structure to the relay of the first embodiment. Therefore, in the following description of the relay of the fourth embodiment, the structure already described in the first embodiment is not repeated. In addition, the same reference symbols are given to the same structures as those of the relay described in the first embodiment. Therefore, in the following description of this embodiment, the differences from the relay of the first embodiment are mainly described.

[0196] In a fourth embodiment of the present application, Fig.16 The figure shows the disconnected state of the moving contact and the stationary contact of the relay. Fig.17 What is shown is the state where the moving contact and the stationary contact of the relay are just in contact.

[0197] like Fig.18 , Figure 23 to Figure 26 As shown, in this embodiment, the first spring piece 200 includes a first base 210, a first spring arm 220 and a first limiting portion 221. The first base 210 is connected to the push rod assembly 3200 through the first limiting hole 211 and the first anti-rotation structure 401, and at least one first spring arm 220 is provided at both ends of the first base 210 along the first direction D1. The first spring arm 220 is provided with a first limiting portion 221 at one end away from the first base 210, and the first limiting portion 221 is arranged relatively along the first direction D1. The first limiting portion 221 corresponds to the two ends of the moving contact piece 3110 along the first direction D1 and has a gap. The first spring piece 200 is formed by a multi-stage connection, and the first limiting portion 221 is arranged relatively along the first direction D1. The limiting assembly has a simple structure and a small volume, can stably prevent the moving contact piece 3110 from rotating, and minimizes the impact on the action voltage of the product.

[0198] like Figure 23 to Figure 24As shown, the first spring arm 220 has a connecting arm 2201 and a bending arm 2202. One end of the connecting arm 2201 is connected to the first base 210, and the other end is connected to the bending arm 2202. The width of the end of the connecting arm 2201 connected to the first base 210 is greater than the width of the end of the connecting arm 2201 connected to the bending arm 2202. In this way, the mechanical strength of the first spring 200 can be improved, and the fatigue resistance of the first spring 200 can be improved. The width of the connecting arm 2201 gradually decreases from the first base 210 to the bending arm 2202. The weight of the first spring 200 can be slightly reduced; in addition, since the width of the connecting arm 2201 changes in a decreasing manner, the first spring arm 220 can reserve enough space in the third direction D3 for arranging other structures.

[0199] In this embodiment, the moving contact piece 3110 and the static contact lead-out terminal 2000 are in full contact and complete the overtravel, and during this process, a gap is always maintained between the first spring piece 100 and the moving contact piece 3110 .

[0200] like Figures 19 to 20 As shown, the relay of the fifth embodiment has substantially the same structure as the relay of the fourth embodiment in the basic structure. Therefore, in the following description of the relay of the fifth embodiment, the structure already described in the fourth embodiment is not repeated. In addition, the same reference symbols are given to the same structures as the structure of the relay described in the fourth embodiment. Therefore, in the following description of this embodiment, the differences from the relay of the fourth embodiment are mainly described.

[0201] In the fifth embodiment of the present application, the moving contact piece 3110 and the static contact lead-out terminal 2000 are in full contact and have completed the overtravel. During this process, the first spring piece 200 and the moving contact piece 3110 change from having a gap at the beginning to being in contact but without deformation at the end. Fig. 20 The surface of the movable contact piece 3110 facing the first reed piece 200 is provided with a second anti-rotation protrusion 3111, and the second anti-rotation protrusion 3111 is always located in the first reed piece 200. Since the relative positions of the second anti-rotation through hole 222 of the first reed piece 200 and the second anti-rotation protrusion 3111 along the first direction do not change, the first reed piece 200 does not deform when the overtravel is completed, and the first reed piece 200 only contacts the movable contact piece 3110, so that during the operation of the relay, the movable contact piece 3110 can be prevented from rotating and the first reed piece 200 can be prevented from participating in the overtravel and affecting the operating voltage of the product.

[0202] like Figure 21 to Figure 22As shown, the relay of the sixth embodiment has a substantially similar structure in basic structure to the relay of the fourth embodiment. Therefore, in the following description of the relay of the sixth embodiment, the structure already described in the fourth embodiment is not repeated. In addition, the same reference numerals are given to the same structure as the structure of the relay described in the fourth embodiment. Therefore, in the following description of this embodiment, the difference from the relay of the fourth embodiment is mainly described.

[0203] In the sixth embodiment of the present application, the moving contact piece 3110 and the static contact lead-out terminal 2000 are in full contact and have completed the overtravel. During this process, the first spring piece 200 and the moving contact piece 3110 change from having a gap at the beginning to having contact and deformation at the end. Fig. 22 The surface of the movable contact piece 3110 facing the first reed piece 200 is provided with a second anti-rotation protrusion 3111, and the second anti-rotation protrusion 3111 is always located in the first reed piece 200. Since the relative positions of the second anti-rotation through hole 222 of the first reed piece 200 and the second anti-rotation protrusion 3111 along the first direction are changed, the first reed piece 200 is deformed when the overtravel is completed, and the first reed piece 200 contacts and deforms the movable contact piece 3110, so that during the operation of the relay, the movable contact piece 3110 is prevented from rotating and the first reed piece 200 is prevented from excessively participating in the overtravel, which affects the operating voltage of the product.

[0204] In the first to sixth embodiments above, the elastic component 300 is a spring, and the spring is used to provide contact pressure, wherein one end of the spring abuts against the limit component 3230 , and the other end of the spring abuts against the dynamic spring component 3100 .

[0205] like Fig. 27 As shown, the relay of the seventh embodiment has a substantially same structure in basic structure as the relay of the first to sixth embodiments. Therefore, in the following description of the relay of the seventh embodiment, the structure already described in the first to sixth embodiments is not repeated. In addition, the same reference symbols are given to the same structures as the relay described in the first to sixth embodiments. Therefore, in the following description of this embodiment, the differences from the relay of the first to sixth embodiments are mainly described.

[0206] In the seventh embodiment, the elastic component 300 is an elastic spring 600, which is connected to the push rod component 3200. The elastic spring 600 has two elastic spring ends 601 and 602. The two elastic spring ends 601 and 602 are respectively abutted against the moving contact piece 3110. The elastic spring 600 is used to provide contact pressure.

[0207] like Fig.28As shown, the relay of the eighth embodiment has a substantially same structure in basic structure as the relay of the fourth to sixth embodiments. Therefore, in the following description of the relay of the eighth embodiment, the structure already described in the fourth to sixth embodiments is not repeated. In addition, the same reference symbols are given to the same structures as the structures of the relay described in the fourth to sixth embodiments. Therefore, in the following description of this embodiment, the differences from the relay of the fourth to sixth embodiments are mainly described.

[0208] In the eighth embodiment, the limit assembly 3230 is connected to the dynamic spring assembly 3100 through the first anti-rotation structure 401. In this embodiment, the first base 210 is connected to the dynamic contact piece 3110 through the first anti-rotation structure 401. The limit assembly 3230 and the base 3211 of the pushing rod assembly 3200 cooperate through the second anti-rotation structure 402, so that the limit assembly 3230 is suspended on the base of the pushing rod assembly 3200, and there is a gap between the limit assembly 3230 and the base 3211 of the pushing rod assembly 3200. The second anti-rotation structure 402 includes a second anti-rotation through hole 222 and a second anti-rotation protrusion 3111. The second anti-rotation through hole 222 is arranged on the first limiting portion 221, and the second anti-rotation protrusion 3111 is arranged on the surface of the base 3211 facing the first limiting portion 221. The second anti-rotation protrusion 3111 cooperates with the second anti-rotation through hole 222 to prevent the rotation of the moving contact piece 3110, thereby ensuring the consistency of the contact position between the moving contact piece and the static contact lead-out terminal. In addition, since the limiting component does not deform or the deformation is small during the over-travel process, it will not affect the product's operating voltage.

[0209] In addition, the limit assembly 3230 is not limited to the first spring leaf 100, 200 using a spring leaf structure. For example, the limit assembly 3230 can also include a telescopic rod, one end of which is connected to the push rod assembly 3200, and the other end of the telescopic rod cooperates with the dynamic spring assembly 3100, and has a gap with the dynamic spring assembly 3100 in the second direction D2. As long as the dynamic spring assembly can be limited from rotating around the axis of the push rod assembly relative to the push rod assembly without affecting the action voltage of the product.

[0210] It is understandable that the various embodiments / implementations provided in the present application can be combined with each other without causing any contradiction, and will not be illustrated one by one here.

[0211] In the application embodiments, the terms "first", "second", and "third" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance; the term "plurality" refers to two or more, unless otherwise expressly defined. The terms "installed", "connected", "connected", "fixed", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; "connected" can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the application embodiments can be understood according to the specific circumstances.

[0212] In the description of the application embodiments, it should be understood that the directions or positional relationships indicated by the terms "up", "down", "left", "right", "front", "back", etc. are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the application embodiments and simplifying the description, rather than indicating or implying that the device or unit referred to must have a specific direction, be constructed and operated in a specific orientation, and therefore, should not be understood as a limitation on the application embodiments.

[0213] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "specific embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the application embodiment. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0214] The above are only preferred embodiments of the application embodiments and are not intended to limit the application embodiments. For those skilled in the art, the application embodiments may have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the application embodiments shall be included in the protection scope of the application embodiments.

Claims

1. A relay, characterized in that: include: A dynamic spring assembly, including a dynamic contact piece; A push rod assembly, used to push the dynamic spring assembly to move so that the dynamic contact piece contacts or separates from the static contact lead-out end; a limit assembly connected to one of the push rod assembly and the dynamic spring assembly, and used to limit the dynamic spring assembly from rotating relative to the push rod assembly around the axis of the push rod assembly, wherein when the dynamic contact piece is separated from the static contact lead-out end, a gap is formed between the limit assembly and the other of the push rod assembly and the dynamic spring assembly along the direction of movement of the dynamic contact piece; and A spring component for providing contact pressure.

2. The relay according to claim 1, characterized in that: The limiting assembly is connected to one of the pushing rod assembly and the dynamic spring assembly through a first anti-rotation structure, and the limiting assembly cooperates with the other one of the pushing rod assembly and the dynamic spring assembly through a second anti-rotation structure.

3. The relay according to claim 2, characterized in that: The limiting component is a first spring.

4. The relay according to claim 3, characterized in that: The first spring sheet and the dynamic spring assembly together form a receiving cavity, and the elastic assembly is accommodated in the receiving cavity.

5. The relay according to claim 3, characterized in that: The relay further includes a pair of static contact lead-out terminals, and the two ends of the movable contact piece along the first direction are used to contact or separate from the pair of static contact lead-out terminals respectively; wherein the first direction is the arrangement direction of the pair of static contact lead-out terminals; The first spring sheet includes a first base, a first spring arm and a first limiting portion, the first base is connected to one of the push rod assembly and the dynamic spring assembly through a first anti-rotation structure, and at least one of the first spring arms is disposed at both ends of the first base along the first direction, and the first limiting portion is disposed at one end of the first spring arm away from the first base, and the first limiting portions are disposed opposite to each other along the first direction; The first limiting portion cooperates with the other two ends of the push rod assembly and the dynamic spring assembly along the first direction through the second anti-rotation structure and has the gap.

6. The relay according to claim 3, characterized in that: The relay further includes a pair of static contact lead-out terminals, and the two ends of the movable contact piece along the first direction are used to contact or separate from the pair of static contact lead-out terminals respectively; wherein the first direction is the arrangement direction of the pair of static contact lead-out terminals; The first spring sheet includes a first base, a first spring arm and a first limiting portion, the first base is connected to one of the push rod assembly and the dynamic spring assembly through a first anti-rotation structure, and at least one of the first spring arms is disposed at both ends of the first base along the first direction, and the first limiting portion is disposed at one end of the first spring arm away from the first base, and the first limiting portions are disposed opposite to each other along the first direction; The first limiting portion cooperates with the other two ends of the push rod assembly and the dynamic spring assembly along the first direction through the second anti-rotation structure and has the gap.

7. The relay according to claim 6, characterized in that: The first spring arm has a connecting arm and a bending arm, one end of the connecting arm is connected to the first base, and the other end is connected to the bending arm.

8. The relay according to claim 7, characterized in that: The width of one end of the connecting arm connected to the first base is greater than the width of one end of the connecting arm connected to the bending arm, and / or the width of the connecting arm gradually decreases from the first base toward the bending arm.

9. The relay according to claim 5 or 6, characterized in that: The second anti-rotation structure includes at least two second anti-rotation through holes and at least two second anti-rotation protrusions, the second anti-rotation through holes are arranged in the first limiting portion, and the second anti-rotation protrusion is arranged in one of the push rod assembly and the dynamic spring assembly. When the dynamic contact piece is in contact with or separated from the static contact lead-out end, the second anti-rotation protrusion is always located in the second anti-rotation through hole.

10. The relay according to claim 9, characterized in that: The first limiting portions are each provided with at least one second anti-rotation through hole.

11. The relay according to claim 9, characterized in that: The second anti-rotation through hole is an elliptical hole, wherein the major axis of the elliptical hole is parallel to the first direction, so that the elliptical hole can move in the first direction and be limited in a third direction, wherein the second direction is the direction of movement of the moving contact piece, and the third direction is perpendicular to the first direction and the second direction.

12. The relay according to claim 9, characterized in that: The second anti-rotation protrusion is arranged on a surface of the movable contact piece facing the first limiting portion.

13. The relay according to claim 12, characterized in that: The first limiting portion further includes a convex pad, which is arranged around the second anti-rotation through hole and faces the movable contact piece.

14. The relay according to claim 12, characterized in that: The hole wall of the second anti-rotation through hole is folded and extended in a direction away from the moving contact piece.

15. The relay according to claim 9, characterized in that: The height of the second anti-rotation protrusion is greater than the depth of the gap.

16. The relay according to claim 5 or 6, characterized in that: The first anti-rotation structure includes a first anti-rotation through hole and a first anti-rotation protrusion, the first anti-rotation through hole is arranged on the first spring leaf, the first anti-rotation protrusion is arranged on one of the push rod assembly and the dynamic spring assembly, and the first anti-rotation protrusion passes through the first anti-rotation through hole.

17. The relay according to claim 16, characterized in that The push rod assembly includes a base, and there are at least two first anti-rotation through holes and first anti-rotation protrusions. The first anti-rotation through holes are arranged on the first base, and the first anti-rotation protrusions are arranged on the base to prevent the first base from rotating around the axis of the push rod assembly.

18. The relay according to claim 1, characterized in that The limit assembly can be deformed, and after the overtravel ends, the limit assembly contacts the dynamic spring assembly and deforms.

19. The relay according to claim 1, characterized in that After the overtravel ends, the limit assembly and the dynamic spring assembly are in contact without deformation.

20. The relay according to claim 1, characterized in that After the overtravel ends, the limit assembly and the dynamic spring assembly are out of contact.

21. The relay according to claim 1, characterized in that The elastic component is a spring, and the spring is used to provide contact pressure.

22. The relay according to claim 21, characterized in that One end of the spring abuts against the limiting assembly, and the other end of the spring abuts against the dynamic spring assembly.

23. The relay according to claim 1, characterized in that The relay further comprises a pair of static contact lead-out terminals, and the two ends of the dynamic contact piece along the first direction are used to contact or separate with the pair of static contact lead-out terminals respectively; wherein the first direction is the arrangement direction of the pair of static contact lead-out terminals; the second direction is defined as the direction of movement of the dynamic contact piece, and the third direction is perpendicular to the first direction and the second direction, Along the third direction, the dynamic spring assembly includes a plurality of dynamic contact pieces.

24. The relay according to claim 1, characterized in that The relay further includes a first magnetic conductor; The first magnetic conductor is arranged on a side of the movable spring assembly facing the static contact lead-out end, and is used to resist the electromotive repulsive force.

25. The relay according to claim 24, characterized in that The dynamic spring assembly further includes a second magnetic conductor, which is fixedly connected to a side of the dynamic contact piece facing away from the static contact lead-out end; the second magnetic conductor is used to form a magnetic circuit with the first magnetic conductor.

26. The relay according to claim 1, characterized in that The elastic component is an elastic spring, the elastic spring is connected to the dynamic spring component and the push rod component, and the elastic spring is used to provide contact pressure.

27. The relay according to claim 1, characterized in that The relay further includes a pair of static contact lead-out terminals, and the two ends of the movable contact piece along the first direction are used to contact or separate from the pair of static contact lead-out terminals respectively; wherein the first direction is the arrangement direction of the pair of static contact lead-out terminals; The limiting assembly is connected to the push rod assembly in a limiting manner along the first direction; and / or, the limiting assembly is connected to the dynamic spring assembly in a limiting manner along the first direction; and / or, the limiting assembly is connected to the elastic assembly in a limiting manner along the first direction.

28. The relay according to claim 1, characterized in that The push rod assembly comprises a contact bracket, and the dynamic spring assembly is installed in the contact bracket through the elastic assembly.

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