Relay

Abstract

The present disclosure provides a relay, comprising a magnetic circuit module, contact modules, and a pusher. An armature portion of the magnetic circuit module is connected to movable spring portions of the contact modules by means of the pusher; each movable spring portion has a first fitting portion, the pusher is provided with mounting slots each having an opening facing downward, and the first fitting portion is inserted into the corresponding mounting slot of the pusher; and the armature portion has a connecting part, and the connecting part is fitted onto the upper side of the pusher. The movable spring portions, the pusher, and the armature portion can be sequentially assembled in a lap joint manner from bottom to top.

Description

relay

[0001] This disclosure claims priority to Chinese patent application No. 202421739830.1, filed on July 22, 2024, and Chinese patent application No. 202411447997.5, filed on October 16, 2024, the entire contents of which are incorporated herein by reference. Technical Field

[0002] This disclosure relates to a relay. Background Technology

[0003] A relay is an electrical control device that causes a predetermined step change in the controlled variable in the electrical output circuit when the change in the input quantity (excitation quantity) reaches a specified requirement. A relay has a control system (also known as the input circuit) and a controlled system (also known as the output circuit). It is commonly used in automated control circuits and is essentially an "automatic switch" that uses a small current to control a large current. Therefore, it plays a role in automatic adjustment, safety protection, and circuit switching in circuits.

[0004] Relays typically use a push-lock connector to connect the armature and the moving spring. In the assembly structure of the armature, push-lock, and moving spring, the push-lock usually has a through-hole mounting port. During assembly, the moving spring must be manually inserted into the mounting port of the push-lock, and then the armature is inserted laterally into the push-lock. This assembly can only be done manually, resulting in low efficiency.

[0005] Public content

[0006] Therefore, this disclosure provides a relay that can assemble the armature part, the push card and the moving spring part through a mechanized assembly method, so as to improve the assembly efficiency and the stability after assembly.

[0007] To achieve the above objectives, the technical solution provided in this disclosure is as follows:

[0008] A relay includes a magnetic circuit module, a contact module, and a push card. The armature portion of the magnetic circuit module is connected to the moving spring portion of the contact module via the push card. The moving spring portion has a first mating part, and the push card has a downward-facing mounting notch. The first mating part is inserted into the mounting notch of the push card. The armature portion has a connecting part, which is mated to the upper side of the push card.

[0009] According to some embodiments of this disclosure, the armature portion of the magnetic circuit module and the moving spring portion of the contact module are arranged in a left-right direction, and the push card is disposed in front of the armature portion and the moving spring portion; the first mating portion limits the push card forward, and the moving spring portion also has a second mating portion, which cooperates with the push card and limits the push card in a left-right direction; and the first mating portion and / or the second mating portion limits the push card downward, and the connecting portion of the armature portion limits the push card upward.

[0010] According to some embodiments of this disclosure, the first mating part limits the push card from the side of the moving spring part, and the connecting part of the armature part limits the push card from the side of the armature part.

[0011] According to some embodiments of this disclosure, the armature portion of the magnetic circuit module and the moving spring portion of the contact module are arranged in the left-right direction, and the push card is arranged in front of the armature portion and the moving spring portion; the first mating portion limits the push card forward, and the connecting portion of the armature portion limits the push card forward.

[0012] According to some embodiments of this disclosure, the push card has a slot on its rear side, and the second mating part includes an insertion part, which is inserted into the slot of the push card to limit the push card in the left and right directions.

[0013] According to some embodiments of this disclosure, the insertion part, when inserted into the slot of the push card, also limits the push card upward and downward.

[0014] According to some embodiments of this disclosure, the distance between the insertion part and the lower side wall of the bayonet is smaller than the distance between the connecting part of the armature part and the upper side of the push card.

[0015] According to some embodiments of this disclosure, the upper and / or lower ends of the plug portion are laterally bent to form an arc-shaped segment that is resistant to scratches.

[0016] According to some embodiments of this disclosure, the second mating part further limits the push card backward.

[0017] According to some embodiments of this disclosure, the second mating part includes a bent rear limiting part, which abuts against the rear side of the push card to limit the push card backward.

[0018] According to some embodiments of this disclosure, the end of the first mating portion is bent to form a front limiting portion, which is located on the front side of the push card, thereby limiting the push card forward.

[0019] According to some embodiments of this disclosure, the upper side of the push card is provided with a protrusion, and the connecting part of the armature portion is provided with an assembly hole, and the protrusion of the push card is fitted into the assembly hole of the connecting part of the armature portion.

[0020] According to some embodiments of this disclosure, the upper side of the push card is recessed downward in a limiting groove, the limiting groove having a rear opening that passes through the rear side of the push card, and the protrusion is formed at the bottom of the limiting groove; the connecting part of the armature portion is fitted into the limiting groove.

[0021] According to some embodiments of this disclosure, the limiting groove has a front sidewall.

[0022] According to some embodiments of this disclosure, the upper side of the push card is provided with an assembly hole, and the connecting part of the armature portion is provided with a downwardly extending protrusion, the protrusion of the connecting part of the armature portion fitting into the assembly hole of the push card.

[0023] According to some embodiments of this disclosure, the upper side of the push card is provided with a card slot, the connecting part of the armature part is fitted into the card slot, and the push card is limited on the side away from the armature part by the limiting cooperation with the card slot.

[0024] According to some embodiments of this disclosure, the card slot has a "T" or "L" shaped structure, including a limiting groove extending in the left-right direction and a limiting notch connecting the limiting groove and penetrating towards the armature portion. The diameter of the limiting notch is smaller than the dimension of the limiting groove extending in the left-right direction. The connecting portion of the armature portion also has a "T" or "L" shaped structure, including an extension section extending in the front-back direction and a limiting section disposed at the end of the extension section and perpendicular to the extension section. The extension section passes through the limiting notch, and the limiting section is fitted into the limiting groove. The push card is limited on the side away from the armature portion by the limiting fit between the limiting section and the limiting groove.

[0025] According to some embodiments of this disclosure, the number of contact modules is two sets, and the moving spring portions of the two sets of contact modules are distributed on the left and right sides of the armature portion. The push card is simultaneously assembled with the armature portion and the two sets of moving spring portions and is suspended and supported.

[0026] According to some embodiments of this disclosure, it also includes a base and a cover, wherein the magnetic circuit module and the contact module are both assembled on the base, and the cover covers the magnetic circuit module, the contact module and the push card and is fixed to the base.

[0027] According to some embodiments of this disclosure, the base is also equipped with an auxiliary contact module, the moving spring of which cooperates with the lower side of the push card.

[0028] According to some embodiments of this disclosure, a contact module is further provided on the front side of the push card, and the moving spring portion of the contact module on the front side forms a left-right limiting position with the push card.

[0029] The technical solution provided in this disclosure has the following beneficial effects:

[0030] 1. The push card has a downward-facing mounting notch, and the first mating part of the moving spring is inserted into the mounting notch of the push card; the connecting part of the armature is mated to the upper side of the push card; thus, in actual assembly, the moving spring, the push card and the armature can be assembled sequentially from bottom to top, which can realize mechanized assembly.

[0031] 2. The movable spring portion also has a second mating part, which mates with the rear side of the push card and limits the push card in the left and right directions; the first mating part and / or the second mating part limits the push card downwards, while the connecting part of the armature portion limits the push card upwards; based on the fact that the movable spring portion, push card, and armature portion can be assembled by overlapping from bottom to top, the stable assembly of the armature portion, push card, and movable spring portion is further ensured. Furthermore, limiting the upper and lower sides of the push card respectively does not require major modifications to the push card, thus maintaining the strength of the push card well and ensuring its stability.

[0032] 3. The first mating part limits the push card from the side away from the moving spring part, and the connecting part of the armature part limits the push card from the side away from the armature part. Based on the fact that the moving spring part, the push card and the armature part can be assembled by overlapping from bottom to top, this setting can effectively limit the push card from flipping and ensure stable operation. Attached Figure Description

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

[0034] Figure 2 shows a top view of the internal structure of the relay in the embodiment;

[0035] Figure 3 shows an enlarged schematic diagram of region A in Figure 2;

[0036] Figure 4 shows a top view of the assembly structure of the armature part, the moving spring part, and the pusher in the embodiment;

[0037] Figure 5 shows a three-dimensional schematic diagram of the assembly of the push card and the two sets of moving springs in the embodiment;

[0038] Figure 6 shows an enlarged schematic diagram of region B in Figure 5;

[0039] Figure 7 shows a schematic diagram of the structure of a single set of moving springs in the embodiment;

[0040] Figure 8 shows a schematic diagram of the push card in the embodiment;

[0041] Figure 9 shows a schematic diagram of the assembly of the push card in the left-view position in the embodiment;

[0042] Figure 10 shows a schematic diagram of the assembly of the push card in the left-view position in the embodiment;

[0043] Figure 11 shows a schematic diagram of the cooperation between the push card and the connecting part in another embodiment;

[0044] Figure 12 shows a schematic diagram of the cooperation between the push card and the connecting part in another embodiment;

[0045] Figure 13 shows a schematic diagram of the cooperation between the push card and the connecting part in another embodiment. Detailed Implementation

[0046] To further illustrate the various embodiments, this disclosure includes accompanying drawings. These drawings are part of the disclosure and are primarily used to illustrate the embodiments, and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these drawings, those skilled in the art should be able to understand other possible implementations and the advantages of this disclosure. Components in the drawings are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0047] In the description of this disclosure, terms such as "upper," "lower," "left," "right," "front," and "rear" are used based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this disclosure.

[0048] The present disclosure will now be further described in conjunction with the accompanying drawings and specific embodiments.

[0049] Example 1

[0050] Referring to Figures 1 to 8, this embodiment provides a relay including a magnetic circuit module 1, a contact module 2, and a push card 30. Referring to Figures 1 and 2, the magnetic circuit module 1 includes a coil, a yoke assembly, and an armature portion 10. The coil generates a magnetic field when energized, and the yoke assembly acts as a magnetic conductor. Switching between different magnetic fields drives the armature portion 10 to oscillate back and forth. The contact module 2 includes a corresponding stationary spring portion and a moving spring portion 20. The moving spring portion 20 and the armature portion 10 are connected by the push card 30. The back-and-forth oscillation of the armature portion 10 drives the moving spring portion 20 to perform opening and closing actions via the push card 30. Of course, in other embodiments, the specific structure of the magnetic circuit module 1 and the contact module 2 is not limited to this.

[0051] Referring to Figures 4 to 8, the armature portion 10 of the magnetic circuit module 1 and the moving spring portion 20 of the contact module 2 are arranged in a left-right direction, and the push card 30 is disposed in front of the armature portion 10 and the moving spring portion 20. The moving spring portion 20 has a first mating portion 21 and a second mating portion 22. Specifically, in this embodiment, the first mating portion 21 is located below the second mating portion 22. The push card 30 has a downward-facing mounting notch 31. The first mating portion 21 is inserted into the mounting notch 31 of the push card 30 and forms a forward (i.e., a side away from the moving spring portion 20) limit on the push card 30. Specifically, in this embodiment, the end of the first mating portion 21 is bent to form a front limiting portion 211; when the first mating portion 21 is inserted into the mounting notch 31 of the push card 30, the bent front limiting portion 211 is located in front of the push card 30, thereby forming a forward limit on the push card 30. Of course, in other embodiments, the structure of the first mating part 21 is not limited to this, as long as it can be inserted into the mounting notch 31 of the push card 30 and form a forward limit thereon.

[0052] The second mating part 22 engages with the rear side of the push card 30 and limits the push card 30 in the left and right directions; simultaneously, the second mating part 22 also limits the push card 30 downwards; while there is a large gap between the upper end of the first mating part 21 and the upper sidewall of the mounting notch 31. In this embodiment, the push card 30 has a slot 32 on its rear side. Specifically, the slot 32 extends from the rear side to the front side, forming a completely through window. Of course, in other embodiments, the slot 32 may not extend to the front side. The second mating part 22 includes an insertion part 23 and a bent rear limiting part 24. The insertion part 23 is inserted into the slot 32 of the push card 30, thereby limiting the push card 30 at least in the downward and left and right directions. The rear limiting part 24 abuts against the rear side of the push card 30 to limit the push card 30 backwards.

[0053] Referring to Figure 11, the armature portion 10 has a connecting portion 11, which engages with the upper side of the push card 30 and limits the push card 30 upward.

[0054] As shown in Figures 9 and 10, the pusher 30, through its cooperation with the armature portion 10 and the movable spring portion 20, achieves limiting in six directions: up, down, left, right, front, and back, ensuring a stable assembly of the pusher 30, armature portion 10, and movable spring portion 20. Furthermore, in actual assembly, the movable spring portion 20, pusher 30, and armature portion 10 can be sequentially overlapped from bottom to top, enabling mechanized assembly. Specifically, the movable spring portion 20 is first fitted into place, and then the pusher 30 is assembled from top to bottom. The mounting notch 31 of the pusher 30 is aligned with the first mating part 21 and installed downwards. Preferably, to avoid interference between the pusher 30 and other parts of the movable spring portion 20 (such as the second mating part 22), the pusher 30 is installed by tilting downwards from front to back, allowing the mounting notch 31 to engage with the first mating part 21, and its rear side to overlap with the second mating part 22 of the movable spring portion 20. Finally, install the armature part 10 so that the connecting part 11 of the armature part 10 fits into the corresponding position on the upper side of the push card 30.

[0055] In practical use, the left and right swing of the armature part 10 drives the push card 30 to move left and right, which in turn drives the moving spring part 20 to perform the opening and closing operation. During the process, the left and right movement of the push card 30 is driven by the limiting cooperation between the bayonet 32 ​​and the insertion part 23 to drive the moving spring part 20 to move. In order to reduce the debris generated by the friction between the insertion part 23 and the inner wall of the bayonet 32, in this embodiment, the upper and lower ends of the insertion part 23 are both laterally bent to form anti-scratching arc-shaped segments 231. The shape is not limited, as shown in Figure 6. In this embodiment, the insertion part 23 forms a "C"-shaped structure. In this way, the sharp point contact between the insertion part 23 and the inner wall of the bayonet 32 ​​is effectively reduced, and the sharp point friction that generates debris is avoided. At the same time, the upper and lower arc-shaped segments 231 form a vertical limiting with the bayonet 32, which also effectively prevents the push card 30 from swinging and deviating in the vertical direction. Of course, in other embodiments, the insertion portion 23 may also be an L-shaped structure formed by bending one end (such as the upper or lower end). More preferably, the front end portion 232 of the insertion portion 23 is also bent inward to minimize the exposure of the tip.

[0056] Furthermore, based on the upper and lower limits formed by the upper and lower arc segments 231 for the push card, the first mating part 21 is set to form a gap between its upper end and the upper side wall of the mounting notch 31, which can prevent the first mating part 21 from contacting the upper side wall of the mounting notch 31 and generating scraping.

[0057] Specifically, in order to ensure the strength of the push card 30 itself, in this embodiment, the through-hole 32 is not connected to the mounting notch 31 below.

[0058] The left and right or up and down limits of the bayonet 32 ​​and the plug-in part 23 can be limits with a certain amount of relative movement, that is, the plug-in part 23 can move a certain distance within the bayonet 32 ​​before being limited; or they can be complete limits, that is, the plug-in part 23 cannot move relative to the bayonet 32.

[0059] When a clearance fit is used, it is further preferred that the distance between the insertion part 23 (specifically the arc-shaped segment 231 on the lower side of the insertion part 23) and the lower side wall of the bayonet 32 ​​is smaller than the distance between the connecting part 11 of the armature part 10 and the upper side of the push card 30. With this configuration, when the push card 30 swings and deviates to one side, the push card 30 will be limited upward by the insertion part 23 of the passive spring part 20 first. At this time, a certain gap will still be maintained between the connecting part 11 of the armature part 10 and the push card 30 to prevent the armature part 11 from being stuck when it drives the push card 30 to move.

[0060] Furthermore, in order to simultaneously realize the structure of the insertion portion 23 of the first mating part 21 and the second mating part 22 and the rear limiting portion 24 of the second mating part 22, in this embodiment, the same moving spring part 20 includes two moving spring pieces (the first moving spring piece 201 and the second moving spring piece 202, respectively), and the two moving spring pieces are in contact with each other; wherein, one moving spring piece (the first moving spring piece 201) forms the insertion portion 23 of the first mating part 21 and the second mating part 22. In this embodiment, the insertion portion 23 of the first mating part 21 and the second mating part 22 is formed by two branches branching off from the same moving spring piece (the first moving spring piece 201); while the front end of the other moving spring piece (the second moving spring piece 202) is bent to form the rear limiting portion 24, that is, the rear limiting portion 24 is a plate-shaped structure formed by bending, which has a good limiting effect and also effectively reduces the contact between the moving spring part 20 and the tip of the push card 30. Of course, in other embodiments, the same moving spring portion 20 may also be provided with one moving spring piece, or two or more moving spring pieces, etc. When using one moving spring piece, the first mating portion 21, the second mating portion 22, and the rear limiting portion 24 are all formed on the same moving spring piece. Alternatively, the second mating portion 22 is not limited to this. For example, the second mating portion 22 is formed in the forward-facing limiting recess of the moving spring portion 20, and the rear side of the push card 30 protrudes rearward with a limiting protrusion. By having the limiting protrusion of the push card 30 engage with the limiting recess of the moving spring portion 20, the push card 30 can also be limited in the rearward and left-right directions.

[0061] Specifically, the second mating part 22 also provides a rearward limit for the push card 30, making the limit of the push card 30 more comprehensive and the action more reliable. Of course, in other embodiments, the push card 30 may not be provided with a rearward limit, in which case the armature part 10 can also drive the moving spring part 20 to perform basic opening and closing operations through the push card 30.

[0062] The upper side of the push card 30 is provided with a protrusion 33, and the connecting part 11 of the armature part 10 is provided with a mounting hole 12. The protrusion 33 of the push card 30 is fitted into the mounting hole 12 of the connecting part 11 of the armature part 10. Specifically, the mounting hole 12 is an elongated slot, and there is a fitting allowance between the protrusion 33 and the mounting hole 12 to ensure that the swinging of the armature part 10 and the left and right translation of the push card 30 will not interfere with each other. It should be understood that the mounting hole 12 in this disclosure can be a through hole or a blind hole.

[0063] Furthermore, the upper side of the push card 30 is recessed downwards with a limiting groove 34. The limiting groove 34 has a rear opening that extends through the rear side of the push card 30, and the protrusion 33 is formed at the bottom of the limiting groove 34. The connecting portion 11 of the armature portion 10 is fitted into the limiting groove 34. In this way, the connecting portion 11 of the armature portion 10 will not protrude from the upper side of the push card 30, achieving a compact assembly. At the same time, the limiting groove 33 has a front sidewall 35, meaning that the limiting groove 33 will not completely penetrate to the front side of the push card 30, thus effectively ensuring the strength of the push card 30.

[0064] Referring to Figures 2 and 4, the mounting hole 12 of the armature portion 10 engages with the protrusion 33 of the push card 30, thus providing a forward limit for the push card 30. Specifically, the connecting portion 11 engages with the upper side of the push card 30 and provides a forward (i.e., a side away from the push card 30) limit. In this way, both the upper and lower sides of the push card 30 have forward limits. Since the push card 30 is positioned in front of the armature portion 10 and the moving spring portion 20, its rear side is limited by the armature portion 10 and / or the moving spring portion 20 (in this embodiment, by the rear limit portion 24). This effectively restricts the push card 30 from flipping in the front-back direction, ensuring stable operation.

[0065] At the same time, limiting the upper and lower sides of the push card 30 respectively, without requiring major modifications to the push card 30 (such as not needing to make the assembly hole 12 too deep), can well maintain the strength of the push card 30 and ensure the stability of the push card 30.

[0066] Of course, in other embodiments, the configuration of the connection portion 11 between the push card 30 and the armature portion 10 is not limited to this. For example, the positions of the protrusion 33 and the mounting hole 12 can also be interchanged. That is, the upper side of the push card 30 is provided with a mounting hole, and the connection portion 11 of the armature portion 10 is provided with a downwardly extending protrusion. The protrusion of the connection portion 11 of the armature portion 10 fits into the mounting hole of the push card 30. In this way, assembly and positioning can also be achieved.

[0067] In this embodiment, the contact module 2 has two sets, which are distributed on the left and right sides of the magnetic circuit module 1. That is, the two sets of moving spring parts 20 are respectively located on the left and right sides of the armature part 10. The push card 30 is simultaneously assembled with the armature part 10 and the two sets of moving spring parts 20 and is suspended and supported. That is, the left and right ends of the push card 30 are supported by the two sets of moving spring parts 20 respectively, and the upper part of its middle section is restricted by the armature part 10, which can achieve a suspended setting without the need for additional support from external components, reducing friction with external components and improving the force transmission effect. Of course, in other embodiments, the contact module 2 can also be set as one set. When one set is set, the lower side of the push card 30 away from the contact module 2 needs to be supported by other components.

[0068] Furthermore, it also includes a base 40 and a cover (not shown). The magnetic circuit module 1 and the contact module 2 are both assembled onto the base 40. The cover covers the magnetic circuit module 1, the contact module 2 and the push card 30 and is fixed to the base 40; thus achieving external packaging.

[0069] Furthermore, an auxiliary contact module 50 is also mounted on the base 40. The moving spring 51 of the auxiliary contact module 50 cooperates with the lower side of the push card 30. By moving the push card 30 left and right, the moving spring 51 of the auxiliary contact module 50 is also driven to perform opening and closing actions. Specifically, the auxiliary contact module 50 is set on the base 40 and does not affect the mechanized assembly of the push card 30.

[0070] Example 2

[0071] The relay provided in this embodiment has a structure that is largely the same as that in Embodiment 1, except that: in this embodiment, the first mating part 21 of the moving spring portion 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.

[0072] Specifically, in order to avoid scratches, the upper end of the first mating part 21 in this embodiment is also bent.

[0073] 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.

[0074] Example 3

[0075] The relay provided in this embodiment has a structure that is largely the same as that in Embodiment 1, except that: a contact module 2 is also provided on the front side of the push card 30, and the moving spring portion 20 of the front contact module 2 forms a left-right limiting with the push card 30. In this embodiment, there are four sets of contact modules 2, 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 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 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.

[0076] 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.

[0077] Example 4

[0078] The relay provided in this embodiment has a structure that is roughly the same as that in Embodiment 1, except that, as shown in Figure 11, the structure in which the connecting part 11 forms a forward limiting structure on the upper side of the push card 30 is as follows: the upper side of the push card 30 is provided with a slot 36, the connecting part 11 of the armature part 10 is fitted into the slot 36, and the push card 30 is limited on the side away from the armature part 10 (the front side in this embodiment) by limiting the connection with the slot 36.

[0079] Specifically, the card slot 36 has a "T" shaped structure, including a limiting groove 37 extending in the left-right direction and a limiting notch 38 connecting the limiting groove 37 and extending rearward to the rear side wall of the push card 30. The diameter of the limiting notch 38 is smaller than the dimension of the limiting groove 37 extending in the left-right direction. The connecting part 11 of the armature part 10 also has a "T" shaped structure, including an extension section 13 extending in the front-back direction and a limiting section 14 disposed at the end of the extension section 13 and perpendicular to the extension section 13. The extension section 13 passes through the limiting notch 38, and the limiting section 14 is fitted into the limiting groove 37. The push card 30 is limited forward by the limiting section 14 and the limiting groove 37; that is, the limiting section 14 is fitted into the rear side wall of the limiting groove 37, thereby limiting the push card 30 forward.

[0080] Specifically, the aforementioned limiting and matching structure enables the connecting part 11 to engage with the upper side of the push card 30 and form a forward limiting on the push card 30. The structural design is simple; and the card slot 36 does not need to be too deep, as long as the limiting and matching is satisfied; it can maintain the strength of the push card well and ensure the stability of the push card.

[0081] Furthermore, in this embodiment, the card slot 36 does not penetrate the front sidewall of the push card 30, that is, the limiting slot 37 also has a front sidewall 361; thus better ensuring the strength of the push card 30.

[0082] At the same time, the connecting part 11 does not protrude forward from the front side of the push card 30, so it will not take up extra space and maintains the compactness of the relay.

[0083] Of course, in other embodiments, the mating structure of the card slot 36 and the connecting part 11 is not limited to this. As shown in FIG12, the card slot 36 can also directly penetrate the front side wall of the push card 30; or, the card slot 36 and the connecting part 11 can also be in an "L" shape, as long as the connecting part 11 can limit the push card 30 to move forward.

[0084] Example 5

[0085] 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 13, in this embodiment, the armature part 10 is located on the rear side of the push card 30, and it and the push card 30 are also in a cooperative manner with the protrusion 33 and the mounting hole 12 in Embodiment 1 to at least limit the push card 30 forward; while the two sets of contact modules 2 are arranged on the front side of the push card 30, that is, the moving spring part 20 is located on the front side of the push card 30, and is inserted into the mounting notch 31 of the push card 30 through the first mating part 21 and limits the push card 30 on the side away from the moving spring part 20 (i.e., the rear side); thereby, it can effectively limit the flipping of the push card 30 in the front and back directions and ensure stable operation.

[0086] 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 contact module and a pusher, wherein an armature part of the magnetic circuit module is connected to a moving spring part of the contact module by means of the pusher; characterized in that: The moving spring part has a first matching part, the push card has an opening downward mounting gap, the first matching part is inserted into the mounting gap of the push card; the armature part has a connecting part, the connecting part is matched on the upper side of the push card.

2. The relay according to claim 1, characterized in that: The armature part of the magnetic circuit module and the moving spring part of the contact module are arranged along the left-right direction, the push card is arranged on the front side of the armature part and the moving spring part; the first matching part forms forward limiting for the push card, the moving spring part further has a second matching part, the second matching part is matched with the push card and forms left-right direction limiting for the push card; and the first matching part and / or the second matching part form downward limiting for the push card, the connecting part of the armature part forms upward limiting for the push card.

3. The relay of claim 1, wherein: The first matching part forms limiting for the side of the push card away from the moving spring part, the connecting part of the armature part forms limiting for the side of the push card away from the armature part.

4. The relay of claim 3, wherein: The armature part of the magnetic circuit module and the moving spring part of the contact module are arranged along the left-right direction, the push card is arranged on the front side of the armature part and the moving spring part; the first matching part forms forward limiting for the push card, the connecting part of the armature part forms forward limiting for the push card.

5. The relay of claim 2, wherein: The rear side of the push card is provided with a bayonet, the second matching part includes a plug-in part, the plug-in part is inserted into the bayonet of the push card, thereby forming left-right direction limiting for the push card.

6. The relay of claim 5, wherein: The plug-in part inserted into the bayonet of the push card further forms upward and downward limiting for the push card.

7. The relay of claim 6, wherein: The distance between the plug-in part and the lower side wall of the bayonet is less than the distance between the connecting part of the armature part and the upper side of the push card.

8. The relay of claim 5, wherein: The upper end and / or lower end of the plug-in part is laterally bent to form an arc-shaped segment for preventing debris.

9. The relay of claim 2, wherein: The second matching part further forms rear limiting for the push card.

10. The relay of claim 9, wherein: The second matching part includes a bent rear limiting part, the rear limiting part abuts against the rear side of the push card to form rear limiting for the push card.

11. The relay according to claim 2 or 4, characterized in that: The end of the first matching part is bent to form a front limiting part, the front limiting part is located on the front side of the push card, thereby forming forward limiting for the push card.

12. The relay according to claim 2 or 4, characterized in that: The upper side of the push card is provided with a convex boss, the connecting part of the armature part is provided with a mounting hole, the convex boss of the push card is matched into the mounting hole of the connecting part of the armature part.

13. The relay of claim 12, wherein: The upper side of the push card is downwardly recessed to form a limiting groove, the limiting groove has a rear side opening penetrating through the rear side of the push card, the convex boss is formed on the groove bottom of the limiting groove; the connecting part of the armature part is mounted into the limiting groove.

14. The relay of claim 13, wherein: The limiting groove has a front side wall.

15. The relay according to claim 2 or 4, characterized by: The upper side of the push card is provided with a mounting hole, the connecting part of the armature part is provided with a convex boss extending downward, the convex boss of the connecting part of the armature part is matched into the mounting hole of the push card.

16. The relay of claim 4, wherein: The upper side of the push card is provided with a clamping groove, the connecting part of the armature part is matched into the clamping groove, and forms limiting for the side of the push card away from the armature part through limiting cooperation with the clamping groove.

17. The relay of claim 16, wherein: The card slot is in a "T" or "L" shape structure, including a limiting slot body extending along the left-right direction and a limiting gap connected to the limiting slot body and penetrating to one side of the armature part, the caliber of the limiting gap is smaller than the size of the limiting slot body extending along the left-right direction; the connecting part of the armature part is also in a "T" or "L" shape structure, including an extension section extending along the front-back direction and a limiting section provided at the end of the extension section and perpendicular to the extension section, the extension section is provided in the limiting gap, the limiting section is fitted in the limiting slot body, the push card is limited by the limiting slot body through the limiting of the limiting section and the limiting slot body to form a limit on the side of the push card away from the armature part.

18. The relay according to claim 2 or 4, characterized by: 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, the push card is suspended and supported by being assembled with the armature part and the two groups of moving spring parts at the same time.

19. The relay according to claim 2 or 4, characterized by: The base and the cover are further included, the magnetic circuit module and the contact module are assembled on the base, the cover covers the magnetic circuit module, the contact module and the push card and is fixed with the base.

20. The relay of claim 19, wherein: The auxiliary contact module is further assembled on the base, the moving spring of the auxiliary contact module is matched with the lower side of the push card.

21. The relay of claim 2, wherein: The front side of the push card is further provided with the contact module, the moving spring part of the contact module on the front side forms a limit in the left-right direction with the push card.

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