Auxiliary contact assembly, relay and installation method of auxiliary contact assembly

Abstract

The invention provides an auxiliary contact assembly, a relay and an installation method of the auxiliary contact assembly, and relates to the technical field of electric power. The auxiliary contact assembly comprises an auxiliary static contact leading-out end and an auxiliary movable reed, and the auxiliary movable reed is contacted with or separated from the auxiliary static contact leading-out end. Wherein the auxiliary static contact leading-out end is of a bent structure, so that the auxiliary static contact leading-out end and the auxiliary movable reed are configured to be capable of being switched between a normally open structure and a normally closed structure. The application of two modes can be realized by utilizing a group of auxiliary movable contact springs and auxiliary static contact leading-out terminals, and the production cost is saved.

Description

Technical Field

[0001] The present invention generally relates to the field of electric power technology, and in particular, to an auxiliary contact assembly, a relay, and an installation method of the auxiliary contact assembly. Background Art

[0002] A relay is an electronic control device, usually used in automatic control circuits. A relay includes a control system and a controlled system. The control system is also called an input circuit, and the controlled system is also called an output circuit. A relay is essentially an "automatic switch" that uses a smaller current to control a larger current, so as to play the role of automatic regulation, safety protection, and circuit conversion in the circuit. A high-voltage DC relay is a relay that has the ability to handle high power. It has the characteristics of reliability and long service life that conventional relays cannot match under harsh conditions such as high voltage and high current, and is widely used in the fields of new energy vehicles and other fields.

[0003] With the development of new energy vehicles, auxiliary contacts are used to monitor and record the closing and opening status of the main contacts of the relay to achieve the purpose of relay reliability. However, the auxiliary contacts of the high-voltage DC relays in the prior art have complex structures, large volumes, and are difficult to manufacture. They have large contact stresses, which affect the reliability of the on-board relays and may even cause major accidents due to relay failure during vehicle driving. In addition, the relay life cycle is short, and frequent replacement of relays will affect the user experience. At the same time, it is impossible to achieve separate settings for the normally open and normally closed types, making it difficult to achieve flexible conversion between the two modes, and the production cost is relatively high. Summary of the invention

[0004] The invention provides an auxiliary contact assembly, a relay and an installation method of the auxiliary contact assembly, which realize flexible conversion between normally open and normally closed modes and reduce production costs.

[0005] According to a first aspect of the present invention, there is provided an auxiliary contact assembly, comprising:

[0006] Auxiliary static contact lead-out terminal;

[0007] An auxiliary moving spring, the auxiliary moving spring being used to contact or separate with the auxiliary static contact lead-out terminal;

[0008] The auxiliary static contact lead-out end is a bent structure, so that the auxiliary static contact lead-out end and the auxiliary moving spring piece are configured to be switchable between a normally open structure and a normally closed structure.

[0009] In some embodiments, the auxiliary static contact lead-out terminal includes a first fixed portion and a first contact portion, the auxiliary movable spring includes a second fixed portion and a second contact portion, the second contact portion is used to contact or separate from the first contact portion, and the first fixed portion and the second contact portion are arranged along a first direction;

[0010] Wherein, the first direction is the direction in which the auxiliary movable spring moves relative to the auxiliary static contact lead-out terminal.

[0011] In some embodiments, the first contact portion and the second contact portion have a contact force when in contact, and the direction of the contact force intersects with the first direction;

[0012] In some embodiments, the first fixing portion extends along the first direction.

[0013] In some embodiments, the first contact portion is arranged obliquely relative to the first direction; and / or,

[0014] The second contact portion is arranged obliquely relative to a second direction, wherein the second direction is the length direction of the auxiliary movable spring, and the first direction and the second direction are perpendicular to each other.

[0015] In some embodiments, the first contact portion and the second contact portion are in point-to-surface contact.

[0016] In some embodiments, a contact arc surface is provided on a side of the first contact portion facing the auxiliary movable spring, and the contact arc surface can contact the auxiliary movable spring and can slide relative to the auxiliary movable spring.

[0017] In some embodiments, the auxiliary static contact lead-out terminal further includes:

[0018] A bending portion, wherein the bending portion is arranged between the first fixing portion and the first contact portion, and the bending portion and the first fixing portion are arranged at an angle to form the bending structure.

[0019] In some embodiments, the angle between the bent portion and the first fixing portion is an acute angle, a right angle, or an obtuse angle.

[0020] In some embodiments, the first fixing portion, the bending portion and the first contact portion are an integrally formed structure.

[0021] In some embodiments, the auxiliary static contact lead-out terminal includes an auxiliary normally-open static contact lead-out terminal, the auxiliary moving reed is provided with an auxiliary moving contact, and the auxiliary normally-open static contact lead-out terminal is provided with an auxiliary normally-open static contact corresponding to the auxiliary moving contact; and / or,

[0022] The auxiliary static contact lead-out terminal includes an auxiliary normally closed static contact lead-out terminal, the auxiliary moving reed is provided with an auxiliary moving contact, and the auxiliary normally closed static contact lead-out terminal is provided with an auxiliary normally closed static contact corresponding to the auxiliary moving contact;

[0023] Wherein, the auxiliary normally open static contact lead-out terminal and the auxiliary normally closed static contact lead-out terminal are configured to be switchable with each other.

[0024] In some embodiments, the bent portion of the auxiliary static contact lead-out terminal is arranged on one side of the auxiliary movable spring along the first direction and away from the first fixed portion to form the auxiliary normally open static contact lead-out terminal; and / or,

[0025] The bent portion of the auxiliary static contact lead-out terminal is arranged on one side of the auxiliary movable spring piece along the first direction and facing the first fixed portion to form the auxiliary normally closed static contact lead-out terminal.

[0026] In some embodiments, the bent portion of the auxiliary static contact lead-out terminal is bent along the second direction and toward the second fixed portion to form the auxiliary normally open static contact lead-out terminal; and / or, the bent portion of the auxiliary static contact lead-out terminal is bent along the second direction and away from the auxiliary moving spring to form the auxiliary normally closed static contact lead-out terminal;

[0027] Wherein, the second direction is the length direction of the auxiliary movable spring, and the first direction and the second direction are perpendicular to each other.

[0028] In some embodiments, the distance between the central axes of the first fixing portion and the second fixing portion of the auxiliary normally open static contact lead-out terminal is greater than the distance between the central axes of the first fixing portion and the second fixing portion of the auxiliary normally closed static contact lead-out terminal.

[0029] In some embodiments, the distance between the central axis of the first fixed portion and the second fixed portion of the auxiliary normally open static contact lead-out terminal is greater than the distance between the edge of the auxiliary movable spring along the length direction of the auxiliary movable spring and the central axis of the second fixed portion; and / or,

[0030] The distance between the central axes of the first fixing portion and the second fixing portion of the auxiliary normally closed static contact lead-out terminal is smaller than the distance between the edge of the auxiliary moving spring along the length direction of the auxiliary moving spring and the central axis of the second fixing portion.

[0031] In some embodiments, the first fixing portion and the bending portion are split structures.

[0032] In some embodiments, the first fixing portion is a lead-out needle, and the bent portion is a sheet-type structure.

[0033] In some embodiments, the bent portion of the auxiliary normally open static contact lead-out terminal is a U-shaped structure, the open end of the U-shaped structure is arranged toward the auxiliary movable spring, and the auxiliary movable spring is at least partially arranged in the U-shaped structure; and / or,

[0034] The bent portion of the auxiliary normally closed static contact lead-out terminal is a U-shaped structure, the open end of the U-shaped structure is arranged away from the auxiliary moving spring piece, and the auxiliary moving spring piece is arranged outside the U-shaped structure.

[0035] In some embodiments, the number of the auxiliary static contact lead-out terminals is multiple, the multiple auxiliary static contact lead-out terminals are arranged around the auxiliary moving spring, and the multiple auxiliary static contact lead-out terminals are respectively arranged on both sides of the auxiliary moving spring along the width direction of the moving spring; and / or,

[0036] The number of the auxiliary static contact lead-out terminals is multiple, and the multiple auxiliary static contact lead-out terminals are arranged around the auxiliary moving spring piece, and the multiple auxiliary static contact lead-out terminals are arranged on both sides of the auxiliary moving spring piece along the length direction of the moving spring piece.

[0037] In some embodiments, the number of the auxiliary static contact lead-out terminals is multiple, and the multiple auxiliary static contact lead-out terminals are diagonally arranged around the auxiliary moving reed.

[0038] According to a second aspect of the present invention, there is further provided a relay comprising the above-mentioned auxiliary contact assembly.

[0039] In some embodiments, a yoke plate and a pushing assembly are further included, wherein the auxiliary static contact lead-out end of the auxiliary contact assembly is arranged on the yoke plate, the auxiliary moving spring of the auxiliary contact assembly is arranged on the pushing assembly, and the pushing assembly is penetrated through the yoke plate and can move relative to the yoke plate.

[0040] In some embodiments, the auxiliary movable spring and the pushing assembly are an integrally formed structure.

[0041] According to a third aspect of the present invention, there is also provided a method for installing an auxiliary contact assembly, which is used to install the auxiliary contact assembly. The method for installing the auxiliary contact assembly comprises the following steps:

[0042] Manufacturing an auxiliary static contact lead-out terminal having a bent portion;

[0043] By adjusting the position of the bent portion relative to the auxiliary movable spring, the auxiliary contact assembly can be switched between the normally open structure and the normally closed structure.

[0044] In some embodiments, adjusting the position of the bent portion relative to the auxiliary movable spring comprises the following steps:

[0045] Adjust at least one of the height of the bending portion relative to the auxiliary movable spring along the first movement direction, the distance of the bending portion relative to the auxiliary movable spring along the length direction of the auxiliary movable spring, and the bending direction of the bending portion relative to the auxiliary movable spring, wherein the first direction is the direction in which the auxiliary movable spring moves relative to the auxiliary static contact lead-out end.

[0046] The embodiments of the present invention have the following advantages or beneficial effects:

[0047] The auxiliary contact assembly and relay provided by the embodiment of the present invention set the auxiliary static contact lead-out terminal to a bent structure, and realize the conversion between the auxiliary static contact lead-out terminal and the auxiliary dynamic spring piece between the normally open structure and the normally closed structure through the mutual cooperation between the auxiliary dynamic spring piece and the auxiliary static contact lead-out terminal. By using a set of auxiliary dynamic spring pieces and auxiliary static contact lead-out terminals, two modes of application can be realized, saving production costs.

[0048] The installation method of the auxiliary contact assembly provided in the embodiment of the present invention does not require any improvement to the structure of the auxiliary movable spring piece. Only the position of the bending portion relative to the auxiliary movable spring piece needs to be adjusted to realize the conversion of the auxiliary contact assembly between the normally open structure and the normally closed structure. The installation process is simple and the original material cost and installation cost are reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] In order to better understand the present invention, reference may be made to the embodiments shown in the following drawings. The components in the drawings are not necessarily to scale, and related elements may be omitted in order to emphasize and clearly illustrate the technical features of the present invention. In addition, related elements or components may have different settings as known in the art. In addition, in the drawings, the same reference numerals represent the same or similar components in each of the drawings. The above and other features and advantages of the present invention will become more apparent by describing in detail its exemplary embodiments with reference to the drawings.

[0050] in:

[0051] Figure 1 The diagram shows a schematic diagram of the structure of the normally open auxiliary contact assembly in the relay of the first embodiment of the present invention when the assembly is pushed to reset;

[0052] Figure 2 It is shown that Figure 1 Sectional view at AA;

[0053] Figure 3The diagram shows a schematic diagram of the structure of the normally open auxiliary contact assembly in the relay in the first embodiment of the present invention in a separated state;

[0054] Figure 4 The diagram shows a schematic diagram of the structure of the normally open auxiliary contact assembly in the relay of the first embodiment of the present invention in the state of pushing the assembly in action;

[0055] Figure 5 It is shown that Figure 4 Cross-sectional view at BB;

[0056] Figure 6 The diagram shows a schematic diagram of the structure of the normally open auxiliary contact assembly in the relay in the first embodiment of the present invention in the contact state;

[0057] Figure 7 The diagram shows a schematic diagram of the structure of an auxiliary contact assembly of a normally open structure in a relay according to the first embodiment of the present invention;

[0058] Figure 8 The diagram shows a schematic diagram of the structure of the normally closed auxiliary contact assembly in the relay in the first embodiment of the present invention in the reset state;

[0059] Fig. 9 It is shown that Figure 8 Cross-sectional view at CC;

[0060] Fig.10 The diagram shows a schematic diagram of the structure of the normally closed auxiliary contact assembly in the relay of the first embodiment of the present invention when the assembly is pushed to reset;

[0061] Fig.11 The diagram shows a schematic diagram of the structure of the auxiliary contact assembly of the normally closed structure in the relay in the first embodiment of the present invention in the contact state;

[0062] Fig.12 The diagram shows a schematic diagram of the structure of an auxiliary contact assembly of a relay corresponding to a normally open structure according to the first embodiment of the present invention;

[0063] Fig.13 The figure shows an exploded schematic diagram of an auxiliary contact assembly of a normally open structure corresponding to a relay according to the first embodiment of the present invention;

[0064] Fig.14 The diagram shows a schematic diagram of the structure of an auxiliary contact assembly of a relay corresponding to a normally closed structure according to the first embodiment of the present invention;

[0065] Fig.15 The figure shows an exploded schematic diagram of an auxiliary contact assembly of a relay corresponding to a normally closed structure according to the first embodiment of the present invention;

[0066] Fig.16The figure shows the structure of the auxiliary contact assembly in the relay of the second embodiment of the present invention. Figure 1 ;

[0067] Fig.17 The figure shows the structure of the auxiliary contact assembly in the relay of the second embodiment of the present invention. Figure 2 ;

[0068] Fig.18 The structure of the auxiliary contact assembly in the relay of the third embodiment of the present invention is shown in FIG. Figure 1 ;

[0069] Fig.19 The structure of the auxiliary contact assembly in the relay of the third embodiment of the present invention is shown in FIG. Figure 2 ;

[0070] Fig. 20 The diagram shows a partial structural diagram of an auxiliary contact assembly of a relay corresponding to a normally open structure according to a fourth embodiment of the present invention;

[0071] Fig.21 Shown is a cross-sectional view of an auxiliary contact assembly of a normally open structure corresponding to a relay according to a fourth embodiment of the present invention;

[0072] Fig. 22 The diagram shows a schematic diagram of the structure of the auxiliary contact assembly of the normally open structure in the relay of the fourth embodiment of the present invention in the separated state;

[0073] Fig.23 It shows a partial structural schematic diagram of an auxiliary contact assembly of a relay corresponding to a normally closed structure according to a fourth embodiment of the present invention;

[0074] Fig.24 Shown is a cross-sectional view of an auxiliary contact assembly of a relay corresponding to a normally closed structure according to a fourth embodiment of the present invention;

[0075] Fig.25 Shown is a schematic structural diagram of an auxiliary contact assembly of a normally closed structure in a relay according to a fourth embodiment of the present invention in a separated state. DETAILED DESCRIPTION

[0076] The following will be combined with the accompanying drawings in the exemplary embodiments of the present invention to clearly and completely describe the technical solutions in the exemplary embodiments of the present invention. The exemplary embodiments described herein are only for illustrative purposes and are not intended to limit the scope of protection of the present invention. Therefore, it should be understood that various modifications and changes can be made to the exemplary embodiments without departing from the scope of protection of the present invention.

[0077] In the description of the present invention, unless otherwise clearly specified and limited, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance; the term "plurality" refers to two or more; the term "and / or" includes any and all combinations of one or more associated listed items. In particular, reference to "the / the" object or "an" object is also intended to indicate one of a possible plurality of such objects.

[0078] Unless otherwise specified or explained, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, an integral connection, an electrical connection, or a signal connection; "connection" can be a direct connection or an indirect connection through an intermediate medium. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0079] Further, in the description of the present invention, it should be understood that the directional words such as "upper", "lower", "inner", "outer" and the like described in the exemplary embodiments of the present invention are described at the angles shown in the accompanying drawings and should not be understood as limiting the exemplary embodiments of the present invention. It should also be understood that, in the context, when it is mentioned that an element or feature is connected to another element (one or more) "upper", "lower", or "inner", "outer", it can not only be directly connected to the other (one or more) elements "upper", "lower", "inner", "outer", but also can be indirectly connected to the other (one or more) elements "upper", "lower", "inner", "outer" through an intermediate element.

[0080] 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 the present invention 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.

[0081] Embodiment 1

[0082] This embodiment provides an auxiliary contact assembly 5, which is applicable to the field of relay technology. Figure 1-Figure 11 As shown, the auxiliary contact assembly 5 includes an auxiliary static contact lead-out terminal 51 and an auxiliary movable spring 52, and the auxiliary movable spring 52 is used to contact or separate with the auxiliary static contact lead-out terminal 51. The auxiliary static contact lead-out terminal 51 is a bent structure, so that the auxiliary static contact lead-out terminal 51 and the auxiliary movable spring 52 are configured to be able to switch between a normally open structure and a normally closed structure.

[0083] The auxiliary contact assembly 5 provided in this embodiment sets the auxiliary static contact lead-out terminal 51 as a bent structure, and realizes the switch between the auxiliary static contact lead-out terminal 51 and the auxiliary dynamic spring 52 between the normally open structure and the normally closed structure through the mutual cooperation between the auxiliary dynamic spring 52 and the auxiliary static contact lead-out terminal 51. By using a set of auxiliary dynamic springs 52 and the auxiliary static contact lead-out terminal 51, two modes of application can be realized, saving production costs.

[0084] It is understandable that the auxiliary contact assembly 5 may have only a normally open structure, or the auxiliary contact assembly 5 may have only a normally closed structure, or the auxiliary contact assembly 5 may have both a normally open structure and a normally closed structure.

[0085] In one embodiment, the appearance of the auxiliary movable spring 52 is similar to a long strip structure, and the direction in which the auxiliary movable spring 52 moves relative to the auxiliary static contact lead-out terminal 51 is defined as a first direction, the first direction is marked by D1, the length direction of the auxiliary movable spring 52 is a second direction, the second direction is marked by D2, the width direction of the auxiliary movable spring 52 is a third direction, the third direction is marked by D3, and the first direction, the second direction and the third direction are perpendicular to each other, wherein the first direction, the second direction and the third direction only represent spatial directions and have no substantial meaning.

[0086] In one embodiment, the auxiliary static contact lead-out terminal 51 includes a first fixed portion 5111 and a first contact portion 5115, and the auxiliary movable spring piece 52 includes a second fixed portion 523 and a second contact portion 524, the second contact portion 524 is used to contact or separate from the first contact portion 5115, and the first fixed portion 5111 and the second contact portion 524 are arranged along the first direction.

[0087] The position of the first fixing portion 5111 is relatively fixed, and the first fixing portion 5111 and the second contact portion 524 are arranged along the first direction and in the up and down direction, but the first fixing portion 5111 and the second contact portion 524 are not in contact with each other, but because the auxiliary static contact lead-out terminal 51 is a bent structure, the first contact portion 5115 and the second contact portion 524 can be in contact with each other.

[0088] It should be particularly noted that the first contact portion 5115 and the second contact portion 524 may be multiple, or the first contact portion 5115 and the second contact portion 524 may be provided with multiple contacts, or one contact portion may be provided with multiple contacts and cooperate with another contact portion to form an auxiliary multi-contact structure, wherein multiple refers to two or more.

[0089] In one embodiment, the first fixing portion 5111 is extended along the first direction, that is, the first fixing portion 5111 is substantially a needle-shaped structure arranged along the vertical direction.

[0090] In one embodiment, the first contact portion 5115 and the second contact portion 524 have a contact force when in contact, and the direction of the contact force intersects with the first direction.

[0091] Among them, the contact force between the first contact portion 5115 and the second contact portion 524 can be decomposed into a component force F1 in the first direction and a component force F2 in a direction perpendicular to the first direction, thereby reducing the force on the auxiliary movable spring 52, avoiding the second contact portion 524 of the auxiliary movable spring 52 from being damaged or severely worn, and causing failure, thereby improving the life and reliability of the auxiliary movable spring 52.

[0092] In one embodiment, the first contact portion 5115 is disposed obliquely relative to the first direction, so that the direction of the contact force intersects with the first direction.

[0093] Since the first fixing portion 5111 is extended along the first direction, if the first fixing portion 5111 and the first contact portion 5115 are collinear, the first contact portion 5115 and the second contact portion 524 of the auxiliary movable spring piece 52 are in point contact, and the contact force is vertically concentrated on the second contact portion 524, which is easy to cause contact damage. The first contact portion 5115 is tilted relative to the first direction, and the first fixing portion 5111 and the first contact portion 5115 are not collinear, but there is a certain tilt angle between the two, so that there is an angle between the first contact portion 5115 and the second contact portion 524, and the contact force can be decomposed into a component force F1 in the first direction and a component force F2 in a direction perpendicular to the first direction, thereby reducing the damage or wear of the second contact portion 524 of the auxiliary movable spring piece 52 and improving the life and reliability of the auxiliary movable spring piece 52.

[0094] In one embodiment, the second contact portion 524 is disposed obliquely relative to the second direction so that the direction of the contact force intersects with the first direction.

[0095] In other words, the second contact portion 524 does not extend along a standard horizontal direction, and the second contact portion 524 has a certain inclination angle relative to the second direction, so as to facilitate the contact between the first contact portion 5115 and the second contact portion 524 .

[0096] The two ends of the auxiliary movable spring 52 along the second direction are bent toward the auxiliary static contact lead-out terminal 51 to form an auxiliary movable contact. In this way, the contact reliability between the auxiliary movable spring 52 and the auxiliary static contact lead-out terminal 51 is improved, and at the same time, the assembly steps of the auxiliary movable spring 52 and the auxiliary movable contact are reduced, thereby saving production costs.

[0097] In one embodiment, there is point contact between the first contact portion 5115 and the second contact portion 524. During point contact, the contact force intersects with the first direction, and the contact force can be decomposed into a component force F1 in the first direction and a component force F2 in a direction perpendicular to the first direction, thereby reducing the damage or wear of the second contact portion 524 of the auxiliary movable spring 52, and further improving the life and reliability of the auxiliary movable spring 52.

[0098] In one embodiment, Figure 2-Figure 11 As shown, the auxiliary static contact lead-out terminal 51 further includes a bending portion 5112, which is disposed between the first fixing portion 5111 and the first contact portion 5115, and the bending portion 5112 and the first fixing portion 5111 are disposed at an angle to form a bending structure.

[0099] It should be particularly noted that the angle formed between the bending portion 5112 and the first fixing portion 5111 makes the auxiliary static contact lead-out terminal 51 a bent structure as a whole, which does not mean that the bending portion 5112 itself has a certain bending angle.

[0100] In one embodiment, the angle between the bending portion 5112 and the first fixing portion 5111 is an acute angle, a right angle, or an obtuse angle.

[0101] The angle between the bending portion 5112 and the first fixing portion 5111 provided in this embodiment is specifically an acute angle. At this time, the end of the bending portion 5112 away from the first fixing portion 5111 is a free end, and the connection between the bending portion 5112 and the first fixing portion 5111 and the area between the free end provide sufficient contact position for the auxiliary movable spring 52.

[0102] If the auxiliary static contact lead-out terminal 51 is a needle-shaped structure, when the auxiliary moving spring 52 and the auxiliary static contact lead-out terminal 51 just come into contact with each other in the overtravel process, the force applied by the auxiliary static contact lead-out terminal 51 to the auxiliary moving spring 52 is a vertical force along the first direction, and the auxiliary moving spring 52 is subjected to force at a single point, that is, only a local force is applied at the position corresponding to the auxiliary moving spring 52 and the auxiliary static contact lead-out terminal 51. During the long-term use of the relay, the auxiliary moving spring 52 and the auxiliary static contact lead-out terminal 51 are easily damaged at this position, which affects the service life.

[0103] In order to solve this problem, the first contact portion 5115 provided in this embodiment is provided with a contact arc surface 5110 (such as Figure 6 As shown), the contact arc surface 5110 can contact the auxiliary movable spring piece 52 and can slide relative to the auxiliary movable spring piece 52.

[0104] Specifically, the contact arc surface 5110 is an arc-shaped structure, and the contact arc surface 5110 is the contact position with the auxiliary movable spring piece 52. The force applied by the contact arc surface 5110 on the auxiliary movable spring piece 52 is not a vertical force along the first direction, but a force perpendicular to the tangent direction between the contact arc surface 5110 and the auxiliary movable spring piece 52. The force F can be divided into a first force F1 along the first direction and a second force F2 along the second direction. Since the second force F2 is a horizontal component force, the vertical component first force F1 is reduced, thereby effectively reducing the pressure on the auxiliary movable spring piece 52 and improving the service life of the auxiliary movable spring piece 52.

[0105] In addition, the contact arc surface 5110 can slide relative to the auxiliary movable spring piece 52, and the bending portion 5112 has a certain sliding trajectory during the contact process, that is, as the pushing component 4 moves, the contact position between the auxiliary movable spring piece 52 and the bending portion 5112 continuously slides to form a linear trajectory, and the contact position between the contact arc surface 5110 and the auxiliary movable spring piece 52 is not the same position, which reduces the single-point force and continuous force of the auxiliary movable spring piece 52, disperses the force position of the auxiliary movable spring piece 52, reduces the damage and failure of the auxiliary movable spring piece 52, and extends the service life of the auxiliary movable spring piece 52.

[0106] In one embodiment, Figure 1-Figure 11 As shown, the first fixing portion 5111 and the bending portion 5112 are an integrally formed structure.

[0107] Specifically, one end of the first fixing portion 5111 away from the yoke iron plate 6 is bent relative to the first fixing portion 5111 to form a bent portion. The manufacturing process is simple, the parts assembly process is saved, and the production cost is relatively low.

[0108] In one embodiment, Figure 1-Figure 7 As shown, the auxiliary static contact lead-out terminal 51 includes an auxiliary normally open static contact lead-out terminal 511, the auxiliary moving reed 52 is provided with an auxiliary moving contact, and the auxiliary normally open static contact lead-out terminal 511 is provided with an auxiliary normally open static contact corresponding to the auxiliary moving contact.

[0109] Among them, the auxiliary moving contact and the auxiliary normally open static contact form an auxiliary normally open contact group. When the pushing component and other moving parts are not in action or are in a reset state, the auxiliary moving contact and the auxiliary normally open static contact are in a separated state; when the pushing component 4 and other moving parts are in action, the auxiliary moving contact and the auxiliary normally open static contact are in contact.

[0110] In one embodiment, Figure 8-Figure 11 The auxiliary static contact lead-out terminal 51 shown includes an auxiliary normally closed static contact lead-out terminal 510 , the auxiliary moving reed 52 is provided with an auxiliary moving contact, and the auxiliary normally closed static contact lead-out terminal 510 is provided with an auxiliary normally closed static contact corresponding to the auxiliary moving contact.

[0111] Among them, the auxiliary moving contact and the auxiliary normally closed static contact form an auxiliary normally closed contact group. When the pushing component 4 is not in action or in a reset state, the auxiliary moving contact and the auxiliary normally closed static contact are in a contact state; when the pushing component 4 is in action, the auxiliary moving contact and the auxiliary normally closed static contact are separated.

[0112] Of course, the auxiliary movable spring 52 and the auxiliary movable contact can be provided separately or in an integral structure; the auxiliary normally open static contact lead-out terminal 511 and the auxiliary normally open static contact can be provided separately or in an integral structure; the auxiliary normally closed static contact lead-out terminal 510 and the auxiliary normally closed static contact can be provided separately or in an integral structure. In addition, the present embodiment does not limit the specific contact form between the auxiliary movable spring 52 and the auxiliary static contact lead-out terminal 51. As long as the contact or separation between the auxiliary movable spring 52 and the auxiliary static contact lead-out terminal 51 can be achieved, it is within the protection scope of the present embodiment.

[0113] The auxiliary normally open static contact lead-out terminal 511 and the auxiliary normally closed static contact lead-out terminal 510 are configured to be switchable with each other.

[0114] When the auxiliary contact assembly 5 needs to be switched from the normally open structure to the normally closed structure, it is only necessary to switch the auxiliary normally open static contact lead-out terminal 511 to the auxiliary normally closed static contact lead-out terminal 510; when the auxiliary contact assembly 5 needs to be switched from the normally closed structure to the normally open structure, it is only necessary to switch the auxiliary normally closed static contact lead-out terminal 510 to the auxiliary normally open static contact lead-out terminal 511. In this way, the switching process is free and flexible, and the production cost of mode switching is relatively low.

[0115] In one embodiment, Figure 1-Figure 7 As shown, the bent portion 5112 of the auxiliary static contact lead-out terminal 51 is arranged on one side of the auxiliary movable spring piece 52 along the first direction and away from the first fixed portion 5111, forming the auxiliary normally open static contact lead-out terminal 511. In other words, the bent portion 5112 of the auxiliary normally open static contact lead-out terminal 511 is arranged above the auxiliary movable spring piece 52 along the first direction.

[0116] In one embodiment, Figure 8-Figure 11 As shown, the bent portion 5112 of the auxiliary static contact lead-out terminal 51 is arranged on one side of the auxiliary movable spring piece 52 along the first direction and toward the first fixed portion 5111, forming an auxiliary normally closed static contact lead-out terminal 510. In other words, the bent portion 5112 of the auxiliary normally closed static contact lead-out terminal 510 is arranged below the auxiliary movable spring piece 52 along the first direction.

[0117] When the auxiliary movable spring 52 moves upward along the first direction, the auxiliary movable spring 52 gradually approaches the bent portion 5112 of the auxiliary normally open static contact lead-out terminal 511, so that the first contact portion 5115 contacts the second contact portion 524. As the auxiliary movable spring 52 gradually moves away from the bent portion 5112 of the auxiliary normally closed static contact lead-out terminal 510, the auxiliary first contact portion 5115 and the second contact portion 524 separate.

[0118] Therefore, the switching between the auxiliary normally open static contact lead-out terminal 511 and the auxiliary normally closed static contact lead-out terminal 510 can be achieved by adjusting the height of the bent portion 5112 relative to the auxiliary movable spring piece 52 along the first direction. For example, by lowering the height of the bent portion 5112 of the auxiliary normally open static contact lead-out terminal 511 along the first direction, at least part of the auxiliary normally closed static contact lead-out terminal 510 can be obtained; by raising the height of the bent portion 5112 of the auxiliary normally closed static contact lead-out terminal 510 along the first direction, at least part of the auxiliary normally open static contact lead-out terminal 511 can be obtained.

[0119] In one embodiment, the bending portion 5112 of the auxiliary static contact lead-out terminal 51 is bent along the second direction and toward the second fixing portion 523 to form the auxiliary normally open static contact lead-out terminal 511. In other words, the bending portion 5112 of the auxiliary normally open static contact lead-out terminal 511 is disposed toward the auxiliary movable spring 52.

[0120] In one embodiment, the bent portion 5112 of the auxiliary static contact lead-out terminal 51 is bent along the second direction and away from the auxiliary movable spring piece 52 to form the auxiliary normally closed static contact lead-out terminal 510. In other words, the bent portion 5112 of the auxiliary normally closed static contact lead-out terminal 510 is disposed away from the auxiliary movable spring piece 52.

[0121] Therefore, the switching between the auxiliary normally open static contact lead-out terminal 511 and the auxiliary normally closed static contact lead-out terminal 510 can be achieved by adjusting the bending direction of the bending portion 5112 relative to the central axis of the second fixing portion 523. For example, by changing the bending portion 5112 of the auxiliary normally open static contact lead-out terminal 511 from the direction toward the central axis of the second fixing portion 523 to the direction away from the central axis of the second fixing portion 523, at least part of the auxiliary normally closed static contact lead-out terminal 510 can be obtained; by changing the bending portion 5112 of the auxiliary normally closed static contact lead-out terminal 510 from the direction away from the central axis of the second fixing portion 523 to the direction toward the central axis of the second fixing portion 523, at least part of the auxiliary normally open static contact lead-out terminal 511 can be obtained.

[0122] It should be particularly noted that the bending directions of the bending portion 5112 of the auxiliary normally open static contact lead-out terminal 511 and the bending portion 5112 of the auxiliary normally closed static contact lead-out terminal 510 are different. In actual production, automatic inspection and error prevention can be designed to prevent the auxiliary normally open static contact lead-out terminal and the auxiliary normally closed static contact lead-out terminal 510 from mixing, which has a certain error prevention function.

[0123] In addition, the auxiliary normally open static contact lead-out terminal 511 and the auxiliary normally closed static contact lead-out terminal 510 are manufactured using the same mold, saving the cost of mold development. The orientation of the bending portion 5112 of the auxiliary normally open static contact lead-out terminal 511 and the auxiliary normally closed static contact lead-out terminal 510 can be achieved by adjusting the rotation angle during installation and assembly.

[0124] In one embodiment, Figure 1-Figure 11 As shown, the distance between the central axes of the first fixing portion 5111 and the second fixing portion 523 of the auxiliary normally open static contact lead-out terminal 511 is greater than the distance between the central axes of the first fixing portion 5111 and the second fixing portion 523 of the auxiliary normally closed static contact lead-out terminal 510 .

[0125] Therefore, the switching between the auxiliary normally open static contact lead-out terminal 511 and the auxiliary normally closed static contact lead-out terminal 510 can be achieved by adjusting the distance between the first fixed portion 5111 and the central axis of the second fixed portion 523. For example, by moving the first fixed portion 5111 of the auxiliary normally open static contact lead-out terminal 511 toward the direction close to the central axis of the second fixed portion 523, at least part of the auxiliary normally closed static contact lead-out terminal 510 can be obtained; by moving the first fixed portion 5111 of the auxiliary normally closed static contact lead-out terminal 510 toward the direction away from the central axis of the second fixed portion 523, at least part of the auxiliary normally open static contact lead-out terminal 511 can be obtained.

[0126] In one embodiment, Figure 1-Figure 7 As shown, the distance between the central axis of the first fixing portion 5111 and the second fixing portion 523 of the auxiliary normally open static contact lead-out terminal 511 is greater than the distance between the edge of the auxiliary movable spring 52 along the length direction of the auxiliary movable spring 52 and the central axis of the second fixing portion 523 .

[0127] In other words, the first fixed portion 5111 of the auxiliary normally open static contact lead-out terminal 511 is arranged on the outside of the auxiliary movable spring piece 52 along the second direction, and there is a certain distance between the first fixed portion 5111 of the auxiliary normally open static contact lead-out terminal 511 and the edge of the auxiliary movable spring piece 52 along the second direction. The first fixed portion 5111 plays a role of avoidance, and the bottom of the bent portion 5112 of the auxiliary normally open static contact lead-out terminal 511 can be reliably contacted with the auxiliary movable spring piece 52.

[0128] like Figure 8-Figure 11 As shown, the distance between the central axis of the first fixing portion 5111 and the second fixing portion 523 of the auxiliary normally closed static contact lead-out terminal 510 is smaller than the distance between the edge of the auxiliary movable spring 52 along the length direction of the auxiliary movable spring 52 and the central axis of the second fixing portion 523 .

[0129] In other words, the first fixed portion 5111 of the auxiliary normally closed static contact lead-out terminal 510 is arranged between the two outer edges of the auxiliary movable spring piece 52 along the second direction, and there is a certain distance between the first fixed portion 5111 of the auxiliary normally open static contact lead-out terminal 511 and the edge of the auxiliary movable spring piece 52 along the second direction, and the top of the bent portion 5112 of the auxiliary normally open static contact lead-out terminal 511 can be reliably contacted with the auxiliary movable spring piece 52.

[0130] This embodiment further provides a relay, comprising the auxiliary contact assembly 5 mentioned above.

[0131] like Figure 2 , Figure 12-Figure 15 As shown, the relay also includes a yoke plate 6 and a pushing component 4. The pushing component 4 is inserted through the yoke plate 6 and can move relative to the yoke plate 6. The auxiliary static contact lead-out terminal 51 of the auxiliary contact component 5 is arranged on the yoke plate 6, and the auxiliary moving spring 52 of the auxiliary contact component 5 is arranged on the pushing component 4.

[0132] In the relay provided in this embodiment, since the yoke iron plate 6 is a fixed part of the relay, the auxiliary static contact lead-out terminal 51 is assembled on the yoke iron plate 6, and the position of the auxiliary static contact lead-out terminal 51 is relatively fixed. The push component 4 is a movable part of the relay, and the auxiliary moving spring 52 is assembled on the push component 4. Under the drive of the push component 4, the auxiliary moving spring 52 moves, and the auxiliary moving spring 52 can move relative to the auxiliary static contact lead-out terminal 51.

[0133] In one embodiment, Figure 7 As shown, a through hole 521 is provided in the middle of the auxiliary movable spring 52 , and the pushing component 4 is passed through the through hole 521 and can move along a first direction relative to the through hole 521 , so that the through hole 521 can avoid the pushing component 4 .

[0134] In one embodiment, the auxiliary movable spring 52 and the pushing assembly 4 are an integrally formed structure.

[0135] Specifically, the auxiliary movable spring 52 is provided with a plurality of process holes 522, and the plurality of process holes 522 are provided on both sides of the through hole 521 along the second direction. The auxiliary movable spring 52 and the pushing component 4 are integrally injection molded, and the process holes 522 are used to improve the stability of the connection between the auxiliary movable spring 52 and the pushing component 4.

[0136] In one embodiment, Figure 2 , Figure 5 and Fig. 9 As shown, the auxiliary contact assembly 5 also includes an insulating member 512 and a connecting member 513. The insulating member 512 is arranged in the yoke iron plate 6. The first fixing portion 5111 passes through the insulating member 512. The connecting member 513 is arranged in the yoke iron plate 6 and between the insulating member 512 and the yoke iron plate 6.

[0137] The insulating member 512 is specifically glass, and the insulating member 512 serves to isolate the yoke iron plate 6 and the auxiliary static contact lead-out terminal 51, thereby preventing the yoke iron plate 6 made of metal and the auxiliary static contact lead-out terminal 51 from being electrically conductive, and ensuring the insulation effect between the yoke iron plate 6 and the auxiliary static contact lead-out terminal 51. The connecting member 513 is specifically a transition copper sheet, and the connecting member 513 is disposed between the insulating member 512 and the yoke iron plate 6, and serves as an intermediate connection between the yoke iron plate 6 and the insulating member 512.

[0138] This structure has the advantages of simplified structural parts, simple molding, and low parts cost. It can also effectively utilize the thickness space of the yoke iron plate 6 to achieve minimum height occupancy, which is conducive to miniaturization of the relay.

[0139] In one embodiment, Figure 2 , Figure 12-Figure 15 As shown, the relay also includes a contact assembly 2, which includes an active reed 22 and a main static contact lead-out terminal 21. The pushing assembly 4 drives the active reed 22 to move, so that the active reed 22 and the main static contact lead-out terminal 21 are in contact or separated; wherein the auxiliary contact assembly 5 is used to monitor the contact or separation between the active reed 22 and the main static contact lead-out terminal 21.

[0140] When the active spring 22 and a pair of main static contact lead-out terminals 21 are in contact, current flows into one main static contact lead-out terminal 21, passes through the active spring 22 and flows out from the other main static contact lead-out terminal 21, thereby connecting the load. Since the push assembly 4 can simultaneously drive the active spring 22 and the auxiliary moving spring 52 to move, the auxiliary contact assembly 5 can realize the main contact monitoring function.

[0141] It should be noted that the movement direction of the active spring 22 provided in this embodiment relative to the main static contact lead-out terminal 21 is the same as the movement direction of the auxiliary dynamic spring 52 relative to the auxiliary static contact lead-out terminal 51. Of course, in other embodiments, the movement direction of the active spring 22 relative to the main static contact lead-out terminal 21 and the movement direction of the auxiliary dynamic spring 52 relative to the auxiliary static contact lead-out terminal 51 may not be in the same direction.

[0142] Among them, the active reed 22 and the main static contact lead-out terminal 21 can be directly in contact or separated, and an active contact can be arranged on the side of the active reed 22 facing the main static contact lead-out terminal 21, and a main static contact can be arranged on the side of the main static contact lead-out terminal 21 facing the active reed 22. The active contact and the main static contact are in contact or separated with each other, and the active contact and the main static contact form a main contact group.

[0143] Of course, the active reed 22 and the active contact can be provided separately or in an integral structure, and the main static contact lead-out terminal 21 and the main static contact can be provided separately or in an integral structure. In addition, the present embodiment does not limit the specific contact form between the active reed 22 and the main static contact lead-out terminal 21, as long as the contact or separation between the active reed 22 and the main static contact lead-out terminal 21 can be achieved, it is within the protection scope of the present embodiment.

[0144] Among them, the state of the auxiliary contact assembly 5 is the same as or different from the state of the contact assembly 2. For example, the active contact and the main static contact are disconnected and are in the main contact separation state, then the auxiliary moving contact and the auxiliary normally open static contact are disconnected and are in the auxiliary normally open contact separation state, and the auxiliary moving contact and the auxiliary normally closed static contact are in contact and are in the auxiliary normally closed contact contact state; the active contact and the main static contact are closed and are in the main contact contact state, then the auxiliary moving contact and the auxiliary normally open static contact are closed and are in the auxiliary contact contact state, and the auxiliary moving contact and the auxiliary normally closed static contact are separated and are in the auxiliary normally closed contact separation state.

[0145] In one embodiment, Figure 2 , Figure 12-Figure 15 As shown, the relay also includes a contact container 1, which includes an insulating cover 11 and a frame sheet 12. The main static contact lead-out terminal 21 at least partially extends into the insulating cover 11. The insulating cover 11 is connected to the yoke iron plate 6 through the frame sheet 12. The insulating cover 11 and the yoke iron plate 6 form a contact chamber, which provides an insulating environment for the contact between the active reed 22 and the main static contact lead-out terminal 21.

[0146] In some other embodiments, the auxiliary static contact lead-out terminal 51 of the auxiliary contact assembly 5 may also be arranged on the inner wall of the insulating cover 11. The first contact portion 5115 of the auxiliary normally open static contact lead-out terminal 511 is arranged on the side of the auxiliary moving spring piece 52 along the first direction and away from the yoke iron plate 6, and / or, the bending portion 5112 of the auxiliary normally open static contact lead-out terminal 511 is arranged away from the second fixing portion 523 of the auxiliary moving spring piece 52; the first contact portion 5115 of the auxiliary normally closed static contact lead-out terminal 510 is arranged on the side of the auxiliary moving spring piece 52 along the first direction and toward the yoke iron plate 6, and / or, the bending portion 5112 of the auxiliary normally closed static contact lead-out terminal 510 is arranged toward the second fixing portion 523 of the auxiliary moving spring piece 52.

[0147] In one embodiment, Figure 2 , Figure 12-Figure 15 As shown, the relay also includes an anti-short circuit component 3, which is arranged on at least the upper side of the active reed 22 along the axial direction of the main static contact lead-out terminal 21, and generates suction when a large fault current occurs in the active reed 22. The anti-short circuit component 3 is used to resist the electric repulsion between the active reed 22 and the main static contact lead-out terminal 21.

[0148] Among them, the anti-short circuit component 3 is substantially arranged on both sides of the active spring 22 along the first direction, so that the active spring 22 is clamped inside the anti-short circuit component 3, which is equivalent to adding a short circuit ring structure at the active spring 22, and can magnetically shield part of the magnetic field generated by the active spring 22 to a certain extent. When a large fault current occurs in the active spring 22, the anti-short circuit component 3 can form a magnetic conductive loop and generate suction, which can resist the electromotive repulsion generated by the fault current between the active spring 22 and the main static contact lead-out terminal 21, avoid the mutual separation between the active spring 22 and the main static contact lead-out terminal 21, and cause arcing explosion, thereby ensuring the reliability and safety of the contact between the active spring 22 and the main static contact lead-out terminal 21.

[0149] Specifically, Figure 2 , Figure 12-Figure 15 As shown, the anti-short circuit assembly 3 includes an upper magnetic conductor 31 and a lower magnetic conductor 32. The upper magnetic conductor 31 is arranged on the side of the active spring 22 close to the main static contact lead-out terminal 21, and the lower magnetic conductor 32 is arranged on the side of the active spring 22 away from the main static contact lead-out terminal 21. A magnetic circuit is formed between the upper magnetic conductor 31 and the lower magnetic conductor 32 to generate suction when a large fault current occurs in the active spring 22, so as to resist the electric repulsion between the active spring 22 and the main static contact lead-out terminal 21. The upper magnetic conductor 31 and the lower magnetic conductor 32 can be made of materials such as iron, cobalt, nickel and their alloys.

[0150] The lower magnetizer 32 is fixed to the lower part of the active spring 22 of the active spring 22. The lower magnetizer 32 can move together with the active spring 22 toward the direction close to the main static contact lead-out terminal 21, so that a magnetic conductive loop can be formed between the upper magnetizer 31 and the lower magnetizer 32. When a large fault current occurs in the active spring 22, since the upper magnetizer 31 is located above the active spring 22 and the lower magnetizer 32 is located below the active spring 22, it is equivalent to the active spring 22 being sandwiched between the upper magnetizer 31 and the lower magnetizer 32. When the upper magnetizer 31 generates suction force on the lower magnetizer 32, the suction force is used to resist the electromotive repulsion force generated by the fault current between the active spring 22 and the main static contact lead-out terminal 21, so as to avoid the mutual separation between the active spring 22 and the main static contact lead-out terminal 21, which leads to arc explosion, and ensures the reliability and safety of the contact between the active spring 22 and the main static contact lead-out terminal 21.

[0151] In some other embodiments, the upper magnet 31 may be a straight-line structure, the upper magnet 31 is correspondingly arranged between the two moving contacts of the active spring 22, and the upper magnet 31 may extend along the width direction of the active spring 22, for matching and corresponding the upper magnet 31 and the lower magnet 32. The lower magnet 32 ​​is a U-shaped structure, the opening of the lower magnet 32 ​​is arranged toward the active spring 22, so that the two side arms of the lower magnet 32 ​​extend toward the upper magnet 31, so that the two side arms of the lower magnet 32 ​​can be close to or contact the two ends of the upper magnet 31, respectively, to form a surrounding magnetic conductive ring on the active spring 22 along its width. Since both ends of the active reed 22 along its length direction are moving contacts, the surrounding magnetic conductive ring formed along the width direction of the active reed 22 will not interfere. When a large fault current occurs in the active reed 22, an electromagnetic attraction force is generated in the pressure direction of the moving contact to resist the electric repulsion force generated by the fault current between the active reed 22 and the main static contact lead-out terminal 21.

[0152] In one embodiment, Figure 2 , Figure 12-Figure 15 As shown, the push assembly 4 includes a push rod 411, a base 412, an elastic member 43 and a U-shaped bracket 42. The base 412 and the upper part of the push rod 411 can be integrally injection molded to form a push rod unit 41, the bottom of the U-shaped bracket 42 is fixedly connected to the base 412, the U-shaped bracket 42 and the base 412 form a frame structure, the active spring 22 and the elastic member 43 are installed in the frame structure formed by the U-shaped bracket 42 and the base 412, one end of the elastic member 43 abuts against the base 412, and the other end abuts against the active spring 22, and the elastic member 43 can provide elastic force, so that the active spring 22 has a tendency to move away from the base 412 and close to the main static contact lead-out terminal 21.

[0153] In one embodiment, the relay further includes an electromagnet unit 44, which is disposed on a side of the yoke plate 6 away from the insulating cover 11. The push rod unit 41 is drivingly connected to the electromagnet unit 44, and the push rod unit 41 is movably disposed in the electromagnet unit 44 and connected to the active reed 22 through the through hole of the yoke plate 6. When the electromagnet unit 44 is energized, it can drive the push rod unit 41 to move, thereby driving the active reed 22 to move, so as to contact or separate from the main static contact lead-out terminal 21.

[0154] The electromagnet unit 44 includes a coil frame (not shown in the figure), a coil (not shown in the figure), a static iron core 444 and a moving iron core 443. The coil frame is hollow cylindrical and is formed of insulating material. The metal cover 45 is inserted into the coil frame, and the coil surrounds the coil frame. The static iron core 444 is fixedly arranged in the metal cover 45, and part of the static iron core 444 extends into the through hole. The static iron core 444 has a first through hole, and the first through hole is arranged corresponding to the position of the through hole, for the push rod unit 41 to pass through it. The moving iron core 443 is movably arranged in the metal cover 45 and is arranged opposite to the static iron core 444. The moving iron core 443 is connected to the push rod unit 41, and is used to be attracted by the static iron core 444 when the coil is energized. The moving iron core 443 and the push rod unit 41 can be connected by screwing, riveting, welding or other methods.

[0155] The working process of the relay provided in this embodiment is as follows:

[0156] When the coil is energized, the moving iron core 443 moves upward, and the moving iron core 443 drives the push rod unit 41 to move upward. Under the pushing action of the push rod unit 41, the active contact of the active spring 22 contacts the main static contact of the main static contact lead-out terminal 21, the auxiliary moving contact of the auxiliary moving spring 52 contacts the auxiliary normally open static contact of the auxiliary normally open static contact lead-out terminal 511, and the auxiliary moving contact of the auxiliary moving spring 52 and the auxiliary normally closed static contact of the auxiliary normally closed static contact lead-out terminal 510 are separated.

[0157] When the coil disconnects the current, the moving iron core 443 drives the push rod unit 41 to move downward, so that the moving contact of the active spring 22 is separated from the main static contact lead-out terminal 21, the auxiliary moving contact of the auxiliary moving spring 52 and the auxiliary normally open static contact of the auxiliary normally open static contact lead-out terminal 511 are separated, and the auxiliary moving contact of the auxiliary moving spring 52 and the auxiliary normally closed static contact of the auxiliary normally closed static contact lead-out terminal 510 are in contact.

[0158] The present embodiment also provides an auxiliary contact assembly installation method for installing the auxiliary contact assembly 5, and the auxiliary contact assembly installation method comprises the following steps: making an auxiliary static contact lead-out terminal 51 having a bending portion 5112; and adjusting the position of the bending portion 5112 relative to the auxiliary moving spring piece 52 to realize the conversion of the auxiliary contact assembly 5 between a normally open structure and a normally closed structure.

[0159] The installation method of the auxiliary contact assembly 5 provided in this embodiment does not require any improvement to the structure of the auxiliary movable spring 52. It only needs to adjust the position of the bending portion 5112 relative to the auxiliary movable spring 52 to achieve the conversion of the auxiliary contact assembly 5 between the normally open structure and the normally closed structure. The installation process is simple and reduces the original material cost and installation cost.

[0160] In one embodiment, adjusting the position of the bent portion 5112 relative to the auxiliary movable spring 52 comprises the following steps:

[0161] Adjust at least one of the height of the bending portion 5112 relative to the auxiliary movable spring piece 52 along the first direction, the distance of the bending portion 5112 relative to the auxiliary movable spring piece 52 along the length direction of the auxiliary movable spring piece 52, and the bending direction of the bending portion 5112 relative to the auxiliary movable spring piece 52.

[0162] Specifically, by adjusting the height of the bending portion 5112 along the first direction and adjusting the position of the bending portion 5112 relative to the auxiliary movable spring piece 52 along the second direction, the position adjustment of the two linear degrees of freedom of the bending portion 5112 in the first direction and the second direction can be achieved; by adjusting the rotation angle of the first fixing portion 5111 relative to the yoke iron plate 6, the bending direction of the bending portion 5112 relative to the auxiliary movable spring piece 52 can be adjusted, thereby achieving the position adjustment of the bending portion 5112 in the rotational degree of freedom.

[0163] Embodiment 2

[0164] This embodiment is similar to the first embodiment, and the only difference is the angle between the bending portion 5112 and the first fixing portion 5111 .

[0165] like Figure 16-Figure 17 As shown, the angle between the bending portion 5112 and the first fixing portion 5111 provided in this embodiment is a right angle or an obtuse angle.

[0166] like Fig.16 As shown in FIG. 1 , when the angle between the bent portion 5112 and the first fixing portion 5111 is a right angle, the bent portion 5112 is arranged parallel to the auxiliary movable spring piece 52, and the entire bent portion 5112 can contact the auxiliary movable spring piece 52. The contact area between the auxiliary static contact lead-out terminal 51 and the auxiliary movable spring piece 52 is relatively large, and the pressure on the auxiliary movable spring piece 52 can be effectively reduced; Fig.17 As shown, when the angle between the bending portion 5112 and the first fixing portion 5111 is an obtuse angle, the bending portion 5112 is arranged upward relative to the auxiliary movable spring piece 52, which can effectively reduce the pressure on the auxiliary movable spring piece 52 and increase the service life of the auxiliary movable spring piece 52.

[0167] It should be noted that if the force applied to the auxiliary spring is reduced, the reliability of the contact between the auxiliary static contact lead-out terminal 51 and the auxiliary spring will be affected. Therefore, the angle between the bent portion 5112 and the first fixed portion 5111 can be adjusted according to actual conditions to achieve the purpose of adjusting the relative angle between the bent portion 5112 and the auxiliary moving spring 52.

[0168] Embodiment 3

[0169] This embodiment is similar to the first embodiment, and the only difference is the number and layout of the auxiliary static contact lead-out terminals 51 .

[0170] The present embodiment provides a plurality of auxiliary static contact lead-out terminals 51, which are arranged around the auxiliary moving spring 52, and the plurality of auxiliary static contact lead-out terminals 51 are respectively arranged on both sides of the auxiliary moving spring 52 along the width direction of the moving spring; and / or, a plurality of auxiliary static contact lead-out terminals 51 are provided, which are arranged around the auxiliary moving spring 52, and the plurality of auxiliary static contact lead-out terminals 51 are respectively arranged on both sides of the auxiliary moving spring 52 along the length direction of the moving spring.

[0171] For example, the number of the auxiliary static contact lead-out terminals 51 is two, and the two auxiliary static contact lead-out terminals 51 are arranged on both sides of the auxiliary movable spring piece 52 along the second direction; the number of the auxiliary static contact lead-out terminals 51 is two, and the two auxiliary static contact lead-out terminals 51 are arranged on both sides of the auxiliary movable spring piece 52 along the third direction; Fig.18 As shown, the number of auxiliary static contact lead-out terminals 51 is four, two auxiliary static contact lead-out terminals 51 are provided on each side of the auxiliary movable spring 52 along the second direction, two auxiliary static contact lead-out terminals 51 are provided on each side of the auxiliary movable spring 52 along the third direction, the four auxiliary static contact lead-out terminals 51 are arranged around the auxiliary movable spring 52, and the four auxiliary static contact lead-out terminals 51 can be specifically arranged at the four corners of the auxiliary movable spring 52, respectively.

[0172] The number of auxiliary static contact lead-out terminals 51 is set to be multiple, that is, the single auxiliary contact contact is increased to two or more auxiliary contact contacts, so as to prevent the auxiliary moving spring 52 from moving, resulting in the auxiliary moving spring 52 and the auxiliary static contact lead-out terminal 51 being unable to contact each other, thereby causing the auxiliary contact assembly 5 to fail, and further improve the contact reliability of the auxiliary contact assembly 5.

[0173] In one embodiment, Fig.19 As shown, a plurality of auxiliary static contact lead-out terminals 51 may also be arranged diagonally around the auxiliary movable spring piece 52 .

[0174] According to structural requirements, multiple auxiliary static contact lead-out terminals 51 are adjusted to be placed diagonally opposite to the auxiliary moving spring piece 52. Even if the auxiliary contact assembly 5 is a unilaterally inclined structure, the contact reliability between the auxiliary static contact lead-out terminals 51 and the auxiliary moving spring piece 52 can be guaranteed.

[0175] Embodiment 4

[0176] This embodiment is similar to the first embodiment, and the only difference is the specific structure of the auxiliary static contact lead-out terminal 51.

[0177] like Figure 20-Figure 25As shown, the first fixing portion 5111 of the auxiliary static contact lead-out terminal 51 provided in this embodiment is a lead-out needle 5113, and the bent portion 5112 is a sheet-type structure.

[0178] The lead-out needle 5113 is arranged on the yoke iron plate 6, and the bent portion 5112 of the sheet structure is specifically an auxiliary static spring piece 5114, which is connected to the lead-out needle 5113, and the auxiliary static spring piece 5114 is in contact with or separated from the auxiliary moving spring piece 52. The combined structure of the lead-out needle 5113 and the auxiliary static spring piece 5114 improves the convenience of assembling the auxiliary static contact lead-out terminal 51.

[0179] In one embodiment, the first fixing portion 5111 and the bending portion 5112 are split structures.

[0180] Since the functions of the lead-out needle 5113 and the auxiliary static spring piece 5114 are different, the lead-out needle 5113 and the auxiliary static spring piece 5114 are of a split structure. The lead-out needle 5113 can be made of a material with good structural strength, and the auxiliary static spring piece 5114 can be made of a wear-resistant material that is more suitable for the contact. The lead-out needle 5113 and the auxiliary static spring piece 5114 can each be made of the required materials to improve the overall reliability of the static contact lead-out terminal.

[0181] In one embodiment, Figure 20-Figure 22 As shown, the bent portion 5112 of the auxiliary normally open static contact lead-out terminal 511 is a U-shaped structure, the open end of the U-shaped structure is arranged toward the auxiliary movable spring piece 52, and the auxiliary movable spring piece 52 is at least partially arranged in the U-shaped structure; and / or, as Figure 23-Figure 25 As shown, the auxiliary static spring piece 5114 of the auxiliary normally closed static contact lead-out terminal 510 is a U-shaped structure, the open end of the U-shaped structure is arranged away from the auxiliary dynamic spring piece 52, and the auxiliary dynamic spring piece 52 is arranged outside the U-shaped structure.

[0182] Therefore, the switching between the auxiliary normally open static contact lead-out terminal 511 and the auxiliary normally closed static contact lead-out terminal 510 can be achieved by adjusting the opening direction of the auxiliary static spring piece 5114. For example, by changing the opening end of the auxiliary static spring piece 5114 in the auxiliary normally open static contact lead-out terminal 511 from the direction toward the central axis of the second fixing portion 523 to the direction away from the central axis of the second fixing portion 523, at least part of the auxiliary normally closed static contact lead-out terminal 510 can be obtained; by changing the opening end of the auxiliary static spring piece 5114 in the auxiliary normally closed static contact lead-out terminal 510 from the direction away from the central axis of the second fixing portion 523 to the direction toward the central axis of the second fixing portion 523, at least part of the auxiliary normally open static contact lead-out terminal 511 can be obtained.

[0183] In one embodiment, Figure 20-Figure 22As shown, the contact portion between the auxiliary static reed piece 5114 of the auxiliary normally open static contact lead-out terminal 511 and the auxiliary moving reed piece 52 is arranged on the inner wall of the auxiliary static reed piece 5114 .

[0184] Since the open end of the auxiliary static spring 5114 in the auxiliary normally open static contact lead-out terminal 511 is facing the central axis of the pushing assembly 4, the auxiliary moving spring 52 can extend into the interior of the auxiliary static spring 5114. At this time, the contact portion between the auxiliary static spring 5114 and the auxiliary moving spring 52 is arranged on the inner wall of the auxiliary static spring 5114, thereby increasing the contact reliability between the auxiliary moving spring 52 and the auxiliary static spring 5114.

[0185] In one embodiment, Figure 23-Figure 25 As shown, the contact portion between the auxiliary static reed 5114 of the auxiliary normally open static contact lead-out terminal 511 and the auxiliary moving reed 52 is arranged on the inner outer wall of the auxiliary static reed 5114 .

[0186] Since the auxiliary static spring 5114 of the auxiliary normally closed static contact lead-out terminal 510 is arranged on the outside of the auxiliary moving spring 52, the contact portion between the auxiliary static spring 5114 and the auxiliary moving spring 52 is arranged on the outer wall of the auxiliary static spring 5114, thereby increasing the contact reliability between the auxiliary moving spring 52 and the auxiliary static spring 5114.

[0187] In one embodiment, Figure 20-Figure 25 As shown, the auxiliary contact assembly 5 further includes a mounting seat 514 , a mounting groove is provided on one side of the yoke iron plate 6 facing the auxiliary movable spring 52 , the mounting seat 514 is disposed in the mounting groove, and the lead-out needle 5113 is inserted through the mounting seat 514 .

[0188] The mounting groove of the yoke iron plate 6 provides a housing and mounting position for the mounting seat 514 , the lead-out needle 5113 is passed through the mounting seat 514 , and the mounting seat 514 fixes the lead-out needle 5113 , thereby ensuring the fixing effect of the static contact lead-out terminal.

[0189] It is understandable that the mounting base 514 is made of insulating materials such as ceramics to achieve isolation between the lead-out needle 5113 and the yoke iron plate 6, thereby avoiding electrical conduction between the yoke iron plate 6 and the lead-out needle 5113 made of metal.

[0190] It should be noted that the auxiliary contact assembly shown in the drawings and described in this specification is only an example of the principle of the present invention. It should be clearly understood by those skilled in the art that the principle of the present invention is not limited to any details or any components of the device shown in the drawings or described in the specification.

[0191] It should be understood that the present invention is not limited in its application to the detailed structure and arrangement of the components proposed in this specification. The present invention can have other embodiments and can be implemented and executed in a variety of ways. The aforementioned variations and modifications fall within the scope of the present invention. It should be understood that the present invention disclosed and defined in this specification extends to all alternative combinations of two or more individual features mentioned or evident in the text and / or the drawings. All these different combinations constitute multiple alternative aspects of the present invention. The embodiments described in this specification illustrate the best mode known for implementing the present invention and will enable those skilled in the art to utilize the present invention.

[0192] Those skilled in the art will readily appreciate other embodiments of the present invention after considering the specification and practicing the invention disclosed herein. The present invention is intended to cover any variations, uses or adaptations of the present invention that follow the general principles of the present invention and include common knowledge or customary techniques in the art that are not disclosed by the present invention. The specification and example embodiments are to be considered exemplary only, and the true scope and spirit of the present invention are indicated by the appended claims.

[0193] It should be understood that the present invention is not limited to the precise structure described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of protection of the present invention is limited only by the appended claims.

Claims

1. An auxiliary contact assembly, characterized in that: include: Auxiliary static contact lead-out terminal; An auxiliary moving spring, the auxiliary moving spring being used to contact or separate with the auxiliary static contact lead-out terminal; The auxiliary static contact lead-out end is a bent structure, so that the auxiliary static contact lead-out end and the auxiliary moving spring piece are configured to be switchable between a normally open structure and a normally closed structure.

2. The auxiliary contact assembly according to claim 1, characterized in that: The auxiliary static contact lead-out terminal includes a first fixed portion and a first contact portion, the auxiliary movable spring includes a second fixed portion and a second contact portion, the second contact portion is used to contact or separate from the first contact portion, and the first fixed portion and the second contact portion are arranged along a first direction; Wherein, the first direction is the direction in which the auxiliary movable spring moves relative to the auxiliary static contact lead-out terminal.

3. The auxiliary contact assembly according to claim 2, characterized in that: The first contact portion and the second contact portion have a contact force when in contact, and a direction of the contact force intersects with the first direction.

4. The auxiliary contact assembly according to claim 2, characterized in that: The first fixing portion is extended along the first direction.

5. The auxiliary contact assembly according to claim 2, characterized in that: The first contact portion is arranged obliquely relative to the first direction; and / or, The second contact portion is arranged obliquely relative to a second direction, wherein the second direction is the length direction of the auxiliary movable spring, and the first direction and the second direction are perpendicular to each other.

6. The auxiliary contact assembly according to claim 2, characterized in that: The first contact portion and the second contact portion are in point contact.

7. The auxiliary contact assembly according to claim 2, characterized in that: A contact arc surface is provided on a side of the first contact portion facing the auxiliary movable spring piece, and the contact arc surface can contact the auxiliary movable spring piece and can slide relative to the auxiliary movable spring piece.

8. The auxiliary contact assembly according to claim 2, characterized in that: The auxiliary static contact lead-out terminal also includes: A bending portion, wherein the bending portion is arranged between the first fixing portion and the first contact portion, and the bending portion and the first fixing portion are arranged at an angle to form the bending structure.

9. The auxiliary contact assembly according to claim 8, characterized in that: The angle between the bending portion and the first fixing portion is an acute angle, a right angle or an obtuse angle.

10. The auxiliary contact assembly according to claim 8, characterized in that: The first fixing portion, the bending portion and the first contact portion are an integrally formed structure.

11. The auxiliary contact assembly according to claim 8, characterized in that: The auxiliary static contact lead-out terminal includes an auxiliary normally-open static contact lead-out terminal, the auxiliary moving reed is provided with an auxiliary moving contact, and the auxiliary normally-open static contact lead-out terminal is provided with an auxiliary normally-open static contact corresponding to the auxiliary moving contact; and / or, The auxiliary static contact lead-out terminal includes an auxiliary normally closed static contact lead-out terminal, the auxiliary moving reed is provided with an auxiliary moving contact, and the auxiliary normally closed static contact lead-out terminal is provided with an auxiliary normally closed static contact corresponding to the auxiliary moving contact; Wherein, the auxiliary normally open static contact lead-out terminal and the auxiliary normally closed static contact lead-out terminal are configured to be switchable with each other.

12. The auxiliary contact assembly according to claim 11, characterized in that: The bent portion of the auxiliary static contact lead-out terminal is arranged on a side of the auxiliary movable spring piece along the first direction and away from the first fixed portion to form the auxiliary normally open static contact lead-out terminal; and / or, The bent portion of the auxiliary static contact lead-out terminal is arranged on one side of the auxiliary movable spring piece along the first direction and facing the first fixed portion to form the auxiliary normally closed static contact lead-out terminal.

13. The auxiliary contact assembly according to claim 11, characterized in that: The bent portion of the auxiliary static contact lead-out terminal is bent along the second direction and toward the second fixed portion to form the auxiliary normally open static contact lead-out terminal; and / or, the bent portion of the auxiliary static contact lead-out terminal is bent along the second direction and away from the auxiliary moving spring to form the auxiliary normally closed static contact lead-out terminal; Wherein, the second direction is the length direction of the auxiliary movable spring, and the first direction and the second direction are perpendicular to each other.

14. The auxiliary contact assembly according to claim 12, characterized in that: A distance between central axes of the first fixing portion and the second fixing portion of the auxiliary normally open static contact lead-out terminal is greater than a distance between central axes of the first fixing portion and the second fixing portion of the auxiliary normally closed static contact lead-out terminal.

15. The auxiliary contact assembly according to claim 14, characterized in that: The distance between the central axis of the first fixed portion and the second fixed portion of the auxiliary normally open static contact lead-out terminal is greater than the distance between the edge of the auxiliary movable spring along the length direction of the auxiliary movable spring and the central axis of the second fixed portion; and / or, The distance between the central axes of the first fixing portion and the second fixing portion of the auxiliary normally closed static contact lead-out terminal is smaller than the distance between the edge of the auxiliary moving spring along the length direction of the auxiliary moving spring and the central axis of the second fixing portion.

16. The auxiliary contact assembly according to claim 8, characterized in that: The first fixing portion and the bending portion are split structures.

17. The auxiliary contact assembly according to claim 16, characterized in that: The first fixing portion is a lead-out needle, and the bending portion is a sheet-type structure.

18. The auxiliary contact assembly according to claim 17, characterized in that: The bent portion of the auxiliary normally open static contact lead-out terminal is a U-shaped structure, the open end of the U-shaped structure is arranged toward the auxiliary movable spring piece, and the auxiliary movable spring piece is at least partially arranged in the U-shaped structure; and / or, The bent portion of the auxiliary normally closed static contact lead-out terminal is a U-shaped structure, the open end of the U-shaped structure is arranged away from the auxiliary moving spring piece, and the auxiliary moving spring piece is arranged outside the U-shaped structure.

19. The auxiliary contact assembly according to any one of claims 1 to 18, characterized in that: The number of the auxiliary static contact lead-out terminals is multiple, and the multiple auxiliary static contact lead-out terminals are arranged around the auxiliary moving spring, and the multiple auxiliary static contact lead-out terminals are respectively arranged on both sides of the auxiliary moving spring along the width direction of the moving spring; and / or, The number of the auxiliary static contact lead-out terminals is multiple, and the multiple auxiliary static contact lead-out terminals are arranged around the auxiliary moving spring piece, and the multiple auxiliary static contact lead-out terminals are arranged on both sides of the auxiliary moving spring piece along the length direction of the moving spring piece.

20. The auxiliary contact assembly according to any one of claims 1 to 18, characterized in that: The number of the auxiliary static contact lead-out terminals is multiple, and the multiple auxiliary static contact lead-out terminals are diagonally arranged around the auxiliary moving spring.

21. A relay, characterized in that: Comprising the auxiliary contact assembly according to any one of claims 1 to 20.

22. The relay according to claim 21, characterized in that It also includes a yoke plate and a pushing component, the auxiliary static contact lead-out end of the auxiliary contact component is arranged on the yoke plate, the auxiliary moving spring of the auxiliary contact component is arranged on the pushing component, and the pushing component is penetrated through the yoke plate and can move relative to the yoke plate.

23. The relay according to claim 22, characterized in that The auxiliary movable spring and the pushing assembly are an integrally formed structure.

24. A method for installing an auxiliary contact assembly, characterized in that: Used to install the auxiliary contact assembly according to any one of claims 1 to 18, the installation method of the auxiliary contact assembly comprises the following steps: Manufacturing an auxiliary static contact lead-out terminal having a bent portion; By adjusting the position of the bent portion relative to the auxiliary movable spring, the auxiliary contact assembly can be switched between the normally open structure and the normally closed structure.

25. The method for installing the auxiliary contact assembly according to claim 24, characterized in that: The step of adjusting the position of the bent portion relative to the auxiliary movable spring comprises the following steps: Adjust at least one of the height of the bending portion relative to the auxiliary movable spring along the first direction, the distance of the bending portion relative to the auxiliary movable spring along the length direction of the auxiliary movable spring, and the bending direction of the bending portion relative to the auxiliary movable spring, wherein the first direction is the direction in which the auxiliary movable spring moves relative to the auxiliary static contact lead-out end.

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