Relay

Abstract

A relay, comprising a magnetic circuit module (1), contact modules (2), a pusher (30), and an auxiliary contact module (50). The magnetic circuit module comprises a coil (3), yokes (4), and an armature assembly (10). The coil is energized to generate different magnetic fields to drive the armature assembly to rotate, so that two groups of attraction points are alternately attracted to the yokes. The armature assembly is connected to movable spring portions of the contact modules by means of the pusher. The auxiliary contact module comprises an auxiliary stationary spring (51) and an auxiliary movable spring (52) which correspond to each other. The pusher is provided with a push portion (36, 37), and the auxiliary movable spring is arranged corresponding to the push portion. The armature assembly drives the pusher to move back and forth, so that the push portion in turn drives the auxiliary movable spring to operate; and when the attraction points of the armature assembly reach an intermediate state at half of the maximum distance from the yokes, the auxiliary movable spring is separated from the push portion. In this way, the switching of the armature assembly is not affected by the auxiliary movable spring, thereby ensuring stable operation of products.

Description

Relay

[0001] The present disclosure claims priority to Chinese Patent Application No. 202410985680.0, filed on July 22, 2024, the entire contents of which are incorporated herein by reference in its entirety. TECHNICAL FIELD

[0002] The present disclosure relates to a relay. BACKGROUND

[0003] A relay is an electric control device that causes a predetermined step change in an electrical output circuit when a change in an input quantity (excitation quantity) meets a specified requirement. The relay includes a control system (also known as an input circuit) and a controlled system (also known as an output circuit), and is usually applied to an automatic control circuit in automation. It is actually a kind of "automatic switch" that uses a small current to control the operation of a large current. Therefore, it plays a role in automatic regulation, safety protection, and circuit conversion in the circuit.

[0004] The relay usually uses a push card to connect the armature part and the moving spring part. In addition, in order to more intuitively confirm the on-off state of the relay, an auxiliary switch is usually provided. The auxiliary contact module of the auxiliary switch is integrated on the relay. When the push card pushes the moving spring part to act, it also synchronously drives the auxiliary moving spring of the auxiliary contact module to act. The push card additionally increases the cooperation with the auxiliary moving spring, which may cause certain influence on the action of the armature part. For example, in the process of alternating attraction of the armature part, the armature will be separated from the yoke. At this time, if the push card still acts on the auxiliary moving spring, the counterforce of the auxiliary moving spring on the push card will hinder the switching of the armature part, and finally lead to the failure to use. SUMMARY

[0005] To this end, the present disclosure provides a relay to solve the above problems.

[0006] To achieve the above purpose, the technical scheme provided by the present disclosure is as follows:

[0007] The utility model relates to a relay, including magnetic circuit module, contact module, push card and auxiliary contact module, the magnetic circuit module includes coil, yoke and armature assembly, the armature assembly includes two groups of attraction points, the coil generates different magnetic field to drive the armature assembly to act and makes two groups of attraction points alternate attraction on yoke, the auxiliary contact module includes corresponding auxiliary static spring and auxiliary moving spring, the push card is provided with push part, the auxiliary moving spring is corresponding with push part setting, the armature assembly drives push card to move back and forth and drives auxiliary moving spring to act through push part, and when the armature assembly moves to the middle state of one half position of the maximum spacing of attraction point and yoke, the auxiliary moving spring is separated from push part, wherein one of two groups of attraction points is attracted to yoke, and the spacing between the other of two groups of attraction points and yoke is the maximum spacing of attraction point and yoke.

[0008] According to some embodiments of the present disclosure, the push part of the push card comprises a first push part and a second push part which are spaced apart along the moving direction of the push card, and the auxiliary moving spring is arranged between the first push part and the second push part, and when the armature assembly moves to the middle state, the auxiliary moving spring is separated from both the first push part and the second push part.

[0009] According to some embodiments of the present disclosure, the push card is translated in the left-right direction, and the auxiliary contact module is arranged below the push card.

[0010] According to some embodiments of the present disclosure, the height of the second push part is lower than that of the first push part, and the second push part is formed on a downwardly extending arm of the push card.

[0011] According to some embodiments of the present disclosure, the second push part is also lower than the contact position of the auxiliary contact module.

[0012] According to some embodiments of the present disclosure, the armature assembly is rotatably arranged, the coil generates different magnetic field to drive the armature assembly to rotate and make two groups of attraction points alternate attraction on yoke, and the auxiliary contact module is arranged corresponding to the rotation axis of the armature assembly and away from the attraction points of the armature assembly.

[0013] According to some embodiments of the present disclosure, the relay further comprises a contact module, and the armature assembly is connected to the moving spring part of the contact module through the push card.

[0014] According to some embodiments of the present disclosure, the armature part of the magnetic circuit module and the moving spring part of the contact module are arranged along the left-right direction, and the push card is arranged on the front side of the armature part and the moving spring part; the moving spring part comprises a first fitting part and a second fitting part, the push card comprises an opening-down mounting gap, the first fitting part is inserted into the mounting gap of the push card and forms forward limiting for the push card, the second fitting part cooperates with the push card and forms left-right direction limiting for the push card; and the first fitting part and / or the second fitting part form downward limiting for the push card; the armature part comprises a connecting part which cooperates with the upper side of the push card and forms upward limiting for the push card; and the auxiliary contact module is arranged below the push card.

[0015] According to some embodiments of the present disclosure, the end of the first fitting part is bent to form a front limiting part which is located on the front side of the push card and forms forward limiting for the push card.

[0016] According to some embodiments of the present disclosure, the rear side of the push card is provided with a bayonet, and the second fitting part comprises a plug-in part and a bent rear limiting part, the plug-in part is inserted into the bayonet of the push card and forms left-right direction limiting for the push card, and the rear limiting part abuts against the rear side of the push card to form rear limiting for the push card.

[0017] According to some embodiments of the present disclosure, the plug-in part inserted into the bayonet of the push card also forms at least downward limiting for the push card.

[0018] According to some embodiments of the present disclosure, the upper end and / or the lower end of the plug-in part is laterally bent to form a scratch-preventing arc segment.

[0019] According to some embodiments of the present disclosure, the number of the contact modules is two groups, the moving spring parts of the two groups of contact modules are distributed on the left and right sides of the armature part, and the auxiliary contact module is arranged at the intermediate position of the two groups of contact modules.

[0020] According to some embodiments of the present disclosure, a base and a cover are further included, the magnetic circuit module, the contact module and the auxiliary contact module are all assembled on the base; and the cover covers the magnetic circuit module, the contact module, the auxiliary contact module and the push card and is fixed with the base.

[0021] According to some embodiments of the present disclosure, the armature assembly is rotatably arranged and comprises two oppositely arranged armatures; the yoke iron is located on both sides of the armature assembly and extends between the two armatures; the first end of the first armature and the second end of the second armature constitute a group of attraction points; the second end of the first armature and the first end of the second armature constitute another group of attraction points, wherein the first end of the first armature and the first end of the second armature are located on the same side of the armature assembly along the left-right direction.

[0022] According to some embodiments of the present disclosure, the auxiliary contact module is a normally closed contact.

[0023] According to some embodiments of the present disclosure, the contact module is further provided, the armature assembly is connected to the moving spring part of the contact module through a push card; the push card does not act on the moving spring part of the contact module in the intermediate state; and the distance between the auxiliary moving spring and the second push part in the intermediate state is m, the moving stroke of the push card driven by the armature assembly when switching from the intermediate state to the attracted position is n, and the distance m is smaller than the stroke n.

[0024] The technical scheme provided by the present disclosure has the following beneficial effects:

[0025] 1. The push part of the push card and the auxiliary moving spring are designed as follows: when the attracted point of the armature assembly moves to the intermediate state at the position of half of the maximum distance from the yoke, the auxiliary moving spring is separated from the push part; so that the auxiliary moving spring does not contact the push card in the intermediate state, the switching of the armature assembly is not affected by the auxiliary moving spring, and the stable operation of the product is ensured.

[0026] 2. The push part of the push card includes a first push part and a second push part which are arranged at intervals along the moving direction of the push card, the auxiliary moving spring is arranged between the first push part and the second push part, and the push card moves back and forth to push the auxiliary moving spring to act through the first push part and the second push part respectively, and the action is stable.

[0027] 3. The auxiliary contact module is arranged below the push card; the height of the second push part is lower than that of the first push part, forming a cooperation mode of one above the other; the second push part is formed on the downwardly extending arm of the push card; a larger distance can be arranged between the first push part and the arm, facilitating the insertion and assembly of the auxiliary moving spring; at the same time, since the second push part is formed on the downwardly extending arm of the push card, when the second push part pushes the auxiliary moving spring, a relatively flexible pushing effect is formed.

[0028] 4. The push card translates along the left-right direction, and the auxiliary contact module is arranged below the push card, so that the structure is more compact.

[0029] 5. The auxiliary contact module is arranged corresponding to the rotating shaft of the armature assembly, and is away from the attracted point of the armature assembly. In this way, the auxiliary contact module does not interfere with the action of the armature assembly, at the same time, the creepage distance of the auxiliary contact module and the contact module is relatively large, which can well ensure the stability of the product.

[0030] 6. The push card is set opening downward installation gap, to match the first matching part of the moving spring part, and form the forward limit; the second matching part cooperates with the rear side of the push card and forms the left and right direction limit of the push card; and the first matching part and / or the second matching part form the downward limit of the push card, and the connecting part of the armature part cooperates with the upper side of the push card and forms the upward limit of the push card; in this way, the stable assembly of the armature part, the push card and the moving spring part is realized; in actual assembly, the moving spring part, the push card and the armature part can be sequentially overlapped and assembled from bottom to top, and the mechanized assembly can be realized.

[0031] 7. The auxiliary contact module is a normally closed contact, which can reduce the influence of foreign matter on the contact closure.

[0032] 8. In the intermediate state of the armature assembly, the push card does not act on the moving spring part of the contact module; the moving spring part of the contact module does not exert a reaction force on the push card, further stabilizing the switching of the armature assembly; the distance between the auxiliary moving spring and the pushing part is m, the moving stroke of the push card driven by the armature assembly when switching from the intermediate state to the attracted position is n, and the distance m is less than the stroke n. In this way, the overtravel driving of the moving spring part of the contact module is performed first, and after the overtravel of the moving spring part travels to a certain distance, the push card contacts the auxiliary moving spring, and the overtravel driving of the moving spring part of the contact module and the auxiliary moving spring of the auxiliary contact module is performed together, so that the reliability of the contact module closing can be effectively guaranteed. BRIEF DESCRIPTION OF DRAWINGS

[0033] Fig. 1 shows a front view of the internal structure of the relay in the embodiment;

[0034] Fig. 2 shows an enlarged schematic view of area A in Fig. 1;

[0035] Fig. 3 shows a top view of the internal structure of the relay in the embodiment;

[0036] Fig. 4 shows an enlarged schematic view of area B in Fig. 3;

[0037] Fig. 5 shows a top view of the assembly structure of the armature part, the moving spring part and the push card in the embodiment;

[0038] Fig. 6 shows a perspective view of the assembly of the push card and the two groups of moving spring parts in the embodiment;

[0039] Fig. 7 shows an enlarged schematic view of area C in Fig. 6;

[0040] Fig. 8 shows a structural schematic view of a single group of moving spring parts in the embodiment;

[0041] Fig. 9 shows a structural schematic view of the push card in the embodiment;

[0042] Fig. 10 shows a schematic diagram of the assembly of the push card in the left view position in an embodiment;

[0043] Fig. 11 shows a schematic diagram of the assembly of the push card in the left view position in an embodiment;

[0044] Fig. 12 shows a front view of the internal structure of a relay in another embodiment. DETAILED DESCRIPTION

[0045] To further illustrate the embodiments, the disclosure provides accompanying drawings. These drawings are part of the disclosure and are mainly used to illustrate the embodiments, and can be used to explain the operating principles of the embodiments in conjunction with the relevant description of the specification. Those of ordinary skill in the art should understand other possible implementations and advantages of the disclosure in conjunction with these. The components in the drawings are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0046] In the description of the disclosure, the terms "upper", "lower", "left", "right", "front", "back", and the like, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of description and simplification of operation, and do not indicate or imply that the devices or elements referred to must include a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the disclosure.

[0047] The disclosure will be further described in conjunction with the drawings and specific embodiments.

[0048] Embodiment one

[0049] Referring to Figs. 1 to 3, the relay provided in the embodiment includes a magnetic circuit module 1, a contact module 2, a push card 30, and an auxiliary contact module 50. The magnetic circuit module 1 includes a coil 3, a yoke 4, and an armature assembly 10. The armature assembly 10 includes two groups of attraction points. The yoke 4 functions as a magnetic guide. The coil 3 generates different magnetic fields when energized to drive the armature assembly 10 to act so that the two groups of attraction points alternately attract the yoke 4. Specifically, in the embodiment, the armature assembly 10 is rotatably arranged. The coil 3 generates different magnetic fields when energized to drive the armature assembly 10 to rotate so that the two groups of attraction points alternately attract the yoke 4. The armature assembly 10 has two oppositely arranged armatures (first armature 13 and second armature 14). The yoke 4 is located on both sides (left and right sides in the embodiment) of the armature assembly 10 and extends between the two armatures. The first end 131 of the first armature (first armature 13) and the second end 142 of the second armature (second armature 14) form a group of attraction points. The second end 132 of the first armature (first armature 13) and the first end 141 of the second armature (second armature 14) form another group of attraction points.

[0050] When one of the two sets of attraction points is attracted to the yoke 4, the other set is separated from the yoke 4 and is in a position of maximum distance from the yoke (defined as the distance L). During the rotation of the armature assembly 10 to switch the attraction points, there will be a state in which the yoke 4 is not attracted to any armature. As shown in FIGS. 1-3, the yoke 4 is located in the middle of the two armatures, i.e., the two sets of attraction points are in a position of maximum distance of half of the yoke 4 (i.e., the distance between the attraction points and the yoke 4 is 0.5L), and this state is defined as the intermediate state of the armature assembly 10.

[0051] Of course, in other embodiments, the structure of the armature assembly 10 is not limited to this, and other structures can be used instead; for example, the armature assembly 10 can also use one armature, etc.; or the armature assembly 10 can also use the direct-acting structure in the prior art, etc.

[0052] The armature assembly 10 is connected to the moving spring part 20 of the contact module 2 through the push card 30. In this embodiment, the rotation of the armature assembly 10 drives the push card 30 to move left and right, thereby driving the moving spring part 20 of the contact module 2 to open and close.

[0053] Referring to FIG. 2, the auxiliary contact module 50 includes a corresponding auxiliary static spring 51 and an auxiliary moving spring 52. The push card 30 is provided with a push part (in this embodiment, a first push part 36 and a second push part 37 described below), and the auxiliary moving spring 52 is provided corresponding to the push part. The armature assembly 10 drives the push card 30 to move back and forth to drive the auxiliary moving spring 52 to act through the push part.

[0054] Referring to FIG. 3, when the armature assembly 10 is in the intermediate state, the distance between the yoke 4 and the two armatures is maximum, and at this time, the magnetic attraction force between the armature and the yoke 4 is minimum. If the driving voltage of the coil 3 is insufficient, the resistance of the coil 3 becomes large due to high temperature environment, etc., the driving force becomes weak, and the armature is more likely to stop in the intermediate state, resulting in problems such as suspended contact, small pressure, large resistance, etc. At the same time, if the push card 30 needs to be provided with a manual lever, the customer needs to use the lever to perform circuit protection, and in this case, the lever has been broken and the contact is still in contact, thereby causing risks. Therefore, when the armature assembly 10 moves to the intermediate state of separation from the yoke 4, the auxiliary moving spring 52 is separated from the push part. In this way, the switching of the armature assembly 10 is not affected by the auxiliary moving spring 52, and the stable operation of the product is ensured.

[0055] Specifically, as shown in FIG. 1 and FIG. 2, in the embodiment, the pushing part of the pushing card 30 includes a first pushing part 36 and a second pushing part 37 which are arranged at intervals along the moving direction of the pushing card 30, i.e. the first pushing part 36 and the second pushing part 37 are arranged at intervals left and right. The auxiliary moving spring 52 is arranged between the first pushing part 36 and the second pushing part 37, when the pushing card 30 moves left, the auxiliary moving spring 52 is pushed by the second pushing part 37 on the right side; when the pushing card 30 moves right, the auxiliary moving spring 52 is pushed by the first pushing part 36 on the left side. And when the armature assembly 10 moves to the intermediate state separated from the yoke 4, the auxiliary moving spring 52 is separated from the first pushing part 36 and the second pushing part 37; i.e. the auxiliary moving spring 52 is not in contact with the first pushing part 36 and the second pushing part 37.

[0056] As shown in FIG. 2, the auxiliary contact module 50 is arranged below the pushing card 30; the auxiliary static spring 51 and the auxiliary moving spring 52 of the auxiliary contact module 50 are distributed left and right, the first pushing part 36 is located on the left side of the auxiliary moving spring 52, and the second pushing part 37 is located on the right side of the auxiliary moving spring 52. Because there is no auxiliary static spring 51 on the right side to interfere, in the embodiment, the height of the second pushing part 37 is set to be lower than that of the first pushing part 36; specifically, the second pushing part 37 is also lower than the position of the contact b of the auxiliary contact module 50; forming a cooperation mode of upper and lower; the second pushing part 37 is formed on the downwardly extending arm 38 of the pushing card 30; the second pushing part 37 protrudes leftward from the arm 38 (see FIG. 9), therefore, a larger interval a can be set between the first pushing part 36 and the arm 38, facilitating the insertion assembly of the auxiliary moving spring 52 and reducing the scratch; as in the specific embodiment, the auxiliary contact module 50 is a normally closed contact, under the condition of no external force, the auxiliary static spring 51 and the auxiliary moving spring 52 are in a closed state, when the pushing card 30 moves right, the first pushing part 36 approaches the auxiliary moving spring 52, and when the pushing card 30 moves right to the position, the first pushing part 36 pushes the auxiliary moving spring 52 right to realize the opening, when the pushing card 30 moves left, the auxiliary moving spring 52 loses the force of the first pushing part 36 and resets itself, when the pushing card 30 moves left to the position, the second pushing part 37 pushes the auxiliary moving spring 52 to continue moving left, providing an overtravel for the auxiliary moving spring 52; ensuring the reliable closing of the auxiliary contact module 50.

[0057] The auxiliary contact module 50 adopts a normally closed contact, which can reduce the influence of foreign matter on the closing contact of the contact during assembly.

[0058] As shown in FIG. 3, the armature assembly 10 is in the intermediate state, the push card 30 does not act on the moving spring part 20 of the contact module 2, that is, the moving spring part 20 of the contact module 2 does not exert a reaction force on the push card 30, further ensuring the stable switching of the armature assembly 10. In the embodiment, the moving spring part 20 of the contact module 2 is also a normally closed structure; that is, in the intermediate state, the contact module 2 is in the closed position. As shown in FIG. 2, the distance between the auxiliary moving spring 52 and the push part (the second push part 37 in the embodiment) of the armature assembly 10 in the intermediate state is m, and the moving stroke of the push card 30 driven by the armature assembly 10 when switching from the intermediate state to the attracted position is n, and the distance m is less than the stroke n. In this way, when the push card 30 moves to the left from the intermediate state shown in FIG. 3, it first drives the over-travel of the moving spring part 20 of the contact module 2 to close, and after the over-travel of the moving spring part 20 travels a distance (distance m), the push card 30 contacts the auxiliary moving spring 52 and drives the over-travel of the moving spring part 20 of the contact module 2 and the auxiliary moving spring 52 of the auxiliary contact module 50 together. In this way, the reliability of the closing of the contact module 2 can be effectively ensured. Of course, in other embodiments, the moving spring part 20 of the contact module 2 can also be a normally open structure, and the push card first pushes the moving spring part 20 to close when the armature assembly 10 switches from the intermediate state to the attracted position, and then drives the over-travel of the moving spring part 20 to close.

[0059] As shown in FIG. 1 and FIG. 3, the auxiliary contact module 50 is arranged corresponding to the rotating shaft 15 of the armature assembly 10, thereby being away from the attracted point of the armature assembly 10 (that is, away from the first end 141 and the second end 142 of the second armature 14 in the figure). In this way, the auxiliary contact module 50 is not easy to interfere with the action of the armature assembly, that is, the first end 141 and the second end 142 of the second armature 14 are not easy to interfere with the auxiliary contact module 50 when the armature assembly 10 rotates; therefore, when the space is limited, the auxiliary contact module 50 can be closer to the armature assembly 10, and the structure is compact. At the same time, it is also away from the contact module 2, so that the creepage distance between the auxiliary contact module 50 and the contact module 2 is relatively large, which can well ensure the stability of the product. In addition, in the embodiment, the auxiliary contact module 50 is arranged below the push card 30, and is arranged in an upper and lower layout in the same height direction, without occupying additional area, that is, the space utilization is higher, so that the structure is more compact, which is conducive to realizing the miniaturization of the product.

[0060] Of course, in other embodiments, the structure and cooperation relationship of the auxiliary contact module 50 and the push part are not limited to this, for example, when the auxiliary contact module 50 is a normally closed contact, the number of push parts can also be single (that is, the first push part 36 described above); or the auxiliary contact module 50 can also adopt a normally open contact; or the height of the first push part 36 is set to be lower than that of the second push part 37.

[0061] Referring to FIGS. 5-9, the number of contact modules 2 is two groups, the moving spring portions 20 of the two groups of contact modules 2 are distributed on the left and right sides of the armature portion 10, and the auxiliary contact module 50 is arranged at a middle position between the two groups of contact modules 2; as in the present embodiment, the push card 30 includes an assembly portion (in the present embodiment, the following convex calyx 33) connected to the armature assembly 10, and the auxiliary contact module 50 is arranged directly below the assembly portion of the push card 30. In this way, the auxiliary contact module 50 can have a relatively large creepage distance from the contact module 2, and the stability of the product can be well ensured. At the same time, the space at this position is relatively sufficient, and will not affect the movement of the armature portion 10; the assembly structure is also compact, ensuring the miniaturization of the product.

[0062] Referring to FIGS. 5, 8 and 9, the push card 30 is arranged at the front side of the armature portion 10 and the moving spring portion 20; wherein the moving spring portion 20 includes a first fitting portion 21 and a second fitting portion 22, and specifically, in the present embodiment, the first fitting portion 21 is located below the second fitting portion 22. The push card 30 includes a downwardly open mounting gap 31, the first fitting portion 21 is inserted into the mounting gap 31 of the push card 30 and forms a forward limit for the push card 30, and specifically, in the present embodiment, the end of the first fitting portion 21 is bent to form a front limit portion 211; when the first fitting portion 21 is inserted into the mounting gap 31 of the push card 30, the front limit portion 211 of the end of the first fitting portion 21 is located at the front side of the push card 30, thereby forming a forward limit for the push card 30. Of course, in other embodiments, the structure of the first fitting portion 21 is not limited thereto, as long as it can be inserted into the mounting gap 31 of the push card 30 and form a forward limit therefor.

[0063] Referring to FIGS. 8 and 9, the second fitting portion 22 cooperates with the rear side of the push card 30 and forms a left-right direction limit for the push card 30; at the same time, the second fitting portion 22 also forms a downward limit for the push card 30; and the upper end of the first fitting portion 21 and the upper side wall of the mounting gap 31 include a relatively large spacing. As in the present embodiment, the rear side of the push card 30 is provided with a bayonet 32, and specifically, the bayonet 32 penetrates from the rear side to the front side to form a completely penetrating window, of course, in other embodiments, the bayonet 32 can not penetrate to the front side. The second fitting portion 22 includes a plug-in portion 23 and a bent rear limit portion 24, the plug-in portion 23 is inserted into the bayonet 32 of the push card 30, thereby forming at least a downward and left-right direction limit for the push card 30, and the rear limit portion 24 abuts against the rear side of the push card 30 to form a rear limit for the push card 30.

[0064] Referring to Fig. 5, the armature part 10 includes a connecting part 11 which is fitted on the upper side of the push card 30 and forms upward limiting for the push card 30.

[0065] As shown in Fig. 10 and Fig. 11, the push card 30 realizes the limiting in six directions of up, down, left, right, front and back through the cooperation with the armature part 10 and the moving spring part 20, so that the push card 30, the armature part 10 and the moving spring part 20 form stable assembly. Meanwhile, in actual assembly, the moving spring part 20, the push card 30 and the armature part 10 can be sequentially overlapped and assembled from bottom to top, and mechanical assembly can be realized. Specifically, the moving spring part 20 is first fitted in place, and then the push card 30 is assembled from top to bottom, wherein the installation gap 31 of the push card 30 is aligned with the first fitting part 21 and installed downward. In order to avoid interference between the push card 30 and other parts (such as the second fitting part 22) of the moving spring part 20, the push card 30 is inclined and moved downward from front to back during assembly to realize installation, so that the installation gap 31 is clamped into the first fitting part 21, and the rear side is overlapped and fitted with the second fitting part 22 of the moving spring part 20. Finally, the armature part 10 is installed, so that the connecting part 11 of the armature part 10 is fitted in the corresponding position on the upper side of the push card 30. At the same time, the auxiliary contact module 50 is located below the push card 30, which does not affect the assembly of the push card 30.

[0066] In actual use, the left and right swinging of the armature part 10 drives the left and right translation of the push card 30, and further drives the opening and closing operation of the moving spring part 20. During the process, the left and right translation of the push card 30 drives the moving spring part 20 to act through the limiting cooperation of the bayonet 32 and the plug-in part 23. In order to reduce the debris generated by the mutual friction between the plug-in part 23 and the inner wall of the bayonet 32, in the embodiment, the upper end and the lower end of the plug-in part 23 are laterally bent to form an anti-scraping arc segment 231, so that the plug-in part 23 forms a "C" shaped structure. In this way, the sharp end contact between the plug-in part 23 and the inner wall of the bayonet 32 is effectively reduced, and debris generated by sharp end friction is avoided. At the same time, the upper and lower arc segments 231 form limiting in the up-down direction between the bayonet 32, which also well avoids the swing deviation of the push card 30 in the up-down direction. Of course, in other embodiments, the plug-in part 23 can also be one end (such as the upper end or the lower end) bent to form an "L" shaped structure. Further preferably, the front end part 232 of the plug-in part 23 is also inwardly bent to reduce the exposure of the sharp end as much as possible.

[0067] Specifically, in order to ensure the strength of the push card 30 itself, in the embodiment, the front and rear through bayonet 32 is not communicated with the lower installation gap 31.

[0068] The left and right or up and down limit of the bayonet 32 and the plug-in part 23 can be a limit including a certain relative movement amount, that is, the plug-in part 23 can move a certain distance in the bayonet 32, and then be limited; or can be a complete limit, that is, the plug-in part 23 cannot relatively move in the bayonet 32.

[0069] Further, in order to synchronize the structures of the plug-in part 23 of the first and second matching parts 21 and 22 and the rear limiting part 24 of the second matching part 22, in the embodiment, the same moving spring part 20 includes two moving spring sheets (first and second moving spring sheets 201 and 202), which are attached to each other; one moving spring sheet (the first moving spring sheet 201) forms the plug-in part 23 of the first and second matching parts 21 and 22, in the embodiment, the plug-in part 23 of the first and second matching parts 21 and 22 is formed by two branches of the same moving spring sheet (the first moving spring sheet 201); and the other moving spring sheet (the second moving spring sheet 202) is bent at the front end to form the rear limiting part 24, that is, the rear limiting part 24 is a plate-shaped structure formed by bending, which has good limiting effect and also reduces the contact between the moving spring part 20 and the sharp end of the push card 30. Of course, in other embodiments, the same moving spring part 20 can be provided with one moving spring sheet or more than two moving spring sheets. Alternatively, the second matching part 22 is not limited to this, for example, the second matching part 22 is a limiting recess formed in the opening of the moving spring part 20 facing forward, the rear side of the push card 30 is protruded rearward to form a limiting protrusion, and the limiting protrusion of the push card 30 is clamped into the limiting recess of the moving spring part 20, which can also achieve the limiting of the push card 30 in the rear and left and right directions.

[0070] Specifically, the second matching part 22 also forms a rear limiting for the push card 30, so that the limiting of the push card 30 is more comprehensive and the action is more reliable. Of course, in other embodiments, the push card 30 can not be limited in the rear direction, so that the armature part 10 can also drive the moving spring part 20 to perform the basic opening and closing operation through the push card 30.

[0071] The upper side of the push card 30 is provided with a convex calyx 33, that is, the assembly part of the push card 30 is the convex calyx 33; the connecting part 11 of the armature part 10 is provided with an assembly slot hole 12, and the convex calyx 33 of the push card 30 is matched in the assembly slot hole 12 of the connecting part 11 of the armature part 10. Specifically, the assembly slot hole 12 is a long slot hole, and the assembly slot hole 12 and the convex calyx 33 include an assembly allowance to ensure that the swing of the armature part 10 and the left and right translation of the push card 30 do not interfere with each other.

[0072] Further, the upper side of the push card 30 is concave downward to form a limiting groove 34, the limiting groove 34 includes a rear side opening penetrating through the rear side of the push card 30, the convex 33 is formed on the groove bottom of the limiting groove 34; the connecting part 11 of the armature part 10 is assembled in the limiting groove 34; in this way, the connecting part 11 of the armature part 10 does not protrude from the upper side of the push card 30, realizing compact assembly. Meanwhile, the limiting groove 33 includes a front side wall 35, that is, the limiting groove 33 does not penetrate through the front side of the push card 30 completely, in this way, the strength of the push card 30 can be effectively ensured.

[0073] Of course, in other embodiments, the arrangement of the push card 30 and the connecting part 11 of the armature part 10 is not limited to this, for example, the position of the convex 33 and the assembly groove hole 12 can be interchanged, that is, the upper side of the push card 30 is provided with the assembly groove hole, the connecting part 11 of the armature part 10 is provided with the downward extending convex, the convex of the connecting part 11 of the armature part 10 is fitted in the assembly groove hole of the push card 30; in this way, assembly and limiting can also be realized.

[0074] In this embodiment, the contact module 2 includes two groups, the two groups of moving spring parts 20 are respectively located on the left and right sides of the armature part 10, the push card 30 is assembled with the armature part 10 and the two groups of moving spring parts 20 and is suspended and supported; that is, the left and right ends of the push card 30 are respectively supported by the two groups of moving spring parts 20, the upper side position of the middle part is limited by the armature part 10, which can realize suspended arrangement, does not need to be additionally supported by external components, reduces friction with external components, and the force transmission effect is better. Of course, in other embodiments, the contact module 2 can also be provided with one group, when provided with one group, the lower side of the end of the push card 30 away from the contact module 2 needs to be supported by other components.

[0075] Further, the base 40 (see FIG. 1) and the cover (not shown) are also included, the magnetic circuit module 1, the contact module 2 and the auxiliary contact module 50 are all assembled on the base 40, the cover covers the magnetic circuit module 1, the contact module 2, the auxiliary contact module 50 and the push card 30 and is fixed with the base 40.

[0076] Embodiment two

[0077] The relay provided in this embodiment is substantially the same as the relay provided in embodiment one, the difference is that, as shown in FIG. 12, in this embodiment, the first push part 36 and the second push part 37 of the push card 30 are at the same height, in this way, the size of the insertion opening for the auxiliary moving spring 52 is relatively small under the condition that the distance between the first push part 36 and the second push part 37 is unchanged; and does not have the relatively flexible push effect formed when the second push part 37 pushes the auxiliary moving spring 52 in embodiment one.

[0078] Example 3

[0079] The relay provided in this embodiment has a structure that is largely the same as that in Embodiment 1, except that, as shown in FIG12, in this embodiment, the first mating part 21 of the moving spring part 20 is inserted into the mounting notch 31 of the push card 30, and the front limiting part 211 with its end bent is located on the front side of the push card 30, thereby limiting the push card 30 forward. At the same time, the upper end of the first mating part 21 abuts against the upper side wall of the mounting notch 31 to limit the push card 30 downward.

[0080] Specifically, in order to avoid scratches, the upper end of the first mating part 21 in this embodiment is also bent.

[0081] Of course, in other embodiments, the downward limit of the push card 30 can also be limited by both the first mating part 21 and the second mating part 22.

[0082] Example 4

[0083] The relay provided in this embodiment has a structure that is largely the same as that in Embodiment 1, except that, as shown in Figure 12, a contact module 2 is also provided on the front side of the push card 30. The moving spring portion 20 of the front contact module 2 forms a left-right limiting position with the push card 30. In this embodiment, four sets of contact modules 2 are included, that is, two sets of contact modules 2 are provided on each of the left and right sides; the two sets of contact modules 2 on the same side are distributed on the front and rear sides of the push card; that is, based on the structure provided in Embodiment 1, a contact module 2 is added to the front side of the push card 30, and the limiting position of the push card 30 is still cooperated by the moving spring portion 20 on the rear side (that is, the cooperation structure is consistent with that in Embodiment 1); the moving spring portion 20 of the newly added front contact module 2 only forms a left-right limiting position with the push card 30, that is, the push card 30 only needs to be able to drive the moving spring portion 20 of the front contact module 2 to move.

[0084] Specifically, the movable spring portion 20 of the front contact module 2 can also be provided with a plug-in portion 23, which can be inserted into the slot 31 of the push card 30 from the front. Correspondingly, the thickness of the push card 30 can be increased to accommodate the insertion of the plug-in portions 23 of the front and rear movable spring portions 20.

[0085] Although this disclosure has been specifically shown and described in conjunction with preferred embodiments, those skilled in the art should understand that various changes in form and detail may be made to this disclosure without departing from the spirit and scope of this disclosure as defined by the appended claims, and all such changes shall be within the scope of protection of this disclosure.

Claims

1. A relay comprising a magnetic circuit module, a push card and an auxiliary contact module, the magnetic circuit module comprising a coil, a yoke and an armature assembly; the armature assembly comprising two sets of attraction points; the coil generates different magnetic fields when energized to drive the armature assembly to act so that the two sets of attraction points are alternately attracted to the yoke; characterized in that: The auxiliary contact module comprises corresponding auxiliary static spring and auxiliary dynamic spring, the push card is provided with a pushing part, the auxiliary dynamic spring is provided corresponding to the pushing part, the armature assembly drives the push card to move back and forth to drive the auxiliary dynamic spring to act through the pushing part, and when the armature assembly moves to the intermediate state of the half position of the maximum distance between the attraction point and the yoke, the auxiliary dynamic spring is separated from the pushing part, wherein the distance between the other one of the two groups of attraction points and the yoke is the maximum distance between the attraction point and the yoke when one of the two groups of attraction points is attracted to the yoke.

2. The relay according to claim 1, characterized in that: The pushing part of the push card comprises a first pushing part and a second pushing part which are arranged at intervals along the moving direction of the push card, and the auxiliary dynamic spring is arranged between the first pushing part and the second pushing part, and when the armature assembly moves to the intermediate state, the auxiliary dynamic spring is separated from the first pushing part and the second pushing part.

3. The relay of claim 2, wherein: The push card translates in the left-right direction, and the auxiliary contact module is arranged below the push card.

4. The relay of claim 3, wherein: The height of the second pushing part is lower than that of the first pushing part; and the second pushing part is formed on the downwardly extending arm of the push card.

5. The relay of claim 4, wherein: The second pushing part is also lower than the contact position of the auxiliary contact module.

6. The relay of claim 1, wherein: The armature assembly is rotatably arranged, different magnetic fields are generated by energizing the coil to drive the armature assembly to rotate so that the two groups of attraction points are alternately attracted to the yoke, the auxiliary contact module is arranged corresponding to the rotation axis of the armature assembly, and is away from the attraction point of the armature assembly.

7. The relay according to any one of claims 1 to 6, characterized in that: The contact module is further included, and the armature assembly is connected to the dynamic spring part of the contact module through the push card.

8. The relay of claim 7, wherein: The armature part of the magnetic circuit module and the dynamic spring part of the contact module are arranged in the left-right direction, and the push card is arranged in front of the armature part and the dynamic spring part; the dynamic spring part comprises a first fitting part and a second fitting part, the push card comprises a downwardly opening mounting gap, the first fitting part is inserted into the mounting gap of the push card and forms a forward limit for the push card, the second fitting part cooperates with the push card and forms a left-right limit for the push card; and the first fitting part and / or the second fitting part form a downward limit for the push card; the armature part comprises a connecting part which cooperates with the upper side of the push card and forms an upward limit for the push card; and the auxiliary contact module is arranged below the push card.

9. The relay of claim 8, wherein: The end of the first fitting part is bent to form a front limiting part, and the front limiting part is located in front of the push card to form a forward limit for the push card.

10. The relay of claim 8, wherein: The rear side of the push card is provided with a bayonet, and the second fitting part comprises a plug-in part and a bent rear limiting part, the plug-in part is inserted into the bayonet of the push card to form a left-right limit for the push card, and the rear limiting part abuts against the rear side of the push card to form a rear limit for the push card.

11. The relay of claim 10, wherein: The plug-in part inserted into the bayonet of the push card also forms at least a downward limit for the push card.

12. The relay of claim 7, wherein: The number of the contact modules is two, and the dynamic spring parts of the two groups of contact modules are distributed on the left and right sides of the armature part, and the auxiliary contact module is arranged at the intermediate position of the two groups of contact modules.

13. The relay of claim 7, wherein: The magnetic circuit module, the contact module and the auxiliary contact module are assembled on the base; and the cover covers the magnetic circuit module, the contact module, the auxiliary contact module and the push card and is fixed with the base.

14. The relay of claim 1, wherein: The armature assembly is rotatably arranged and includes two oppositely arranged armatures; the yoke is located at two sides of the armature assembly and extends to between the two armatures; a first end of the first armature and a second end of the second armature constitute a group of attraction points; a second end of the first armature and a first end of the second armature constitute another group of attraction points, wherein the first end of the first armature and the first end of the second armature are located at the same side of the armature assembly along the left-right direction.

15. The relay of claim 2, wherein: The auxiliary contact module is a normally closed contact.

16. The relay of claim 15, wherein: The contact module is further included, the armature assembly is connected with a moving spring part of the contact module through a push card; in the intermediate state, the push card does not act on the moving spring part of the contact module, a distance between the auxiliary moving spring and the second push part is m, and a moving stroke of the push card driven by the armature assembly when the armature assembly is switched from the intermediate state to the attraction position is n, and the distance m is less than the stroke n.

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