Relay

Abstract

The utility model provides a relay, which comprises a magnetic circuit module, a contact module and a pushing card, and is characterized in that an armature part of the magnetic circuit module is connected with a movable spring part of the contact module through the pushing card; the movable spring part is provided with a first matching part, the pushing card is provided with a mounting notch with a downward opening, the first matching part is inserted into the mounting notch of the pushing card, the armature part is provided with a connecting part, and the connecting part is matched on the upper side of the pushing card. The movable spring part, the pushing clamp and the armature part can be sequentially assembled in a lap joint mode from bottom to top.

Description

Technical Field

[0001] The utility model relates to a relay. Background Art

[0002] A relay is an electrical control device that causes a predetermined step change in the controlled variable in an electrical output circuit when the change in the input quantity (stimulation quantity) reaches a specified level. It interacts between the control system (also known as the input circuit) and the controlled system (also known as the output circuit). Commonly used in automated control circuits, it acts as an "automatic switch" that uses a small current to control a large current. Therefore, it plays a role in circuits such as automatic regulation, safety protection, and circuit switching.

[0003] Relays often use a push-clip to connect the armature and spring. The assembly structure of the armature, push-clip, and spring typically features a through-hole on the push-clip. During assembly, the spring must be manually inserted into the push-clip's hole before the armature is laterally inserted into the push-clip. This manual assembly method is inefficient. Utility Model Content

[0004] To this end, the utility model provides a relay, which can assemble the armature part, the push card and the dynamic spring part through a mechanized assembly method, so as to improve the assembly efficiency and have good stability after assembly.

[0005] To achieve the above purpose, the technical solutions provided by the present invention are as follows:

[0006] A relay includes a magnetic circuit module, a contact module and a push card, wherein the armature portion of the magnetic circuit module is connected to the movable spring portion of the contact module via the push card; the movable spring portion has a first mating portion, and the push card has a mounting notch with an opening facing downward, and the first mating portion is inserted into the mounting notch of the push card; the armature portion has a connecting portion, and the connecting portion is mated to the upper side of the push card.

[0007] Furthermore, the armature part of the magnetic circuit module and the movable spring part of the contact module are arranged along the left and right directions, and the push card is arranged on the front side of the armature part and the movable spring part; the first matching part forms a forward limit for the push card, and the movable spring part also has a second matching part, and the second matching part cooperates with the push card and forms a left and right limit for the push card; and the first matching part and / or the second matching part forms a downward limit for the push card, and the connecting part of the armature part forms an upward limit for the push card.

[0008] Furthermore, the first matching portion forms a limit on the side of the push card away from the dynamic spring portion, and the connecting portion of the armature portion forms a limit on the side of the push card away from the armature portion.

[0009] Furthermore, the armature part of the magnetic circuit module and the movable spring part of the contact module are arranged along the left and right directions, and the push card is arranged on the front side of the armature part and the movable spring part; the first matching part forms a forward limit for the push card, and the connecting part of the armature part forms a forward limit for the push card.

[0010] Furthermore, a bayonet is provided on the rear side of the push card, and the second matching portion includes an inserting portion, which is inserted into the bayonet of the push card, thereby limiting the push card in the left and right directions.

[0011] Furthermore, the plug-in portion is inserted into the slot of the push card to limit the push card upward and downward.

[0012] Furthermore, the distance between the plug-in portion and the lower side wall of the bayonet is smaller than the distance between the connecting portion of the armature part and the upper side of the push card.

[0013] Furthermore, the upper end and / or the lower end of the plug-in portion is bent laterally to form an arc-shaped section to prevent scratches.

[0014] Furthermore, the second matching portion also forms a rearward limit for the push card.

[0015] Furthermore, the second matching portion includes a bent rear limiting portion, which abuts against the rear side of the push card to form a rearward limit for the push card.

[0016] Furthermore, the end of the first matching portion is bent to form a front limiting portion, and the front limiting portion is located at the front side of the push card, thereby limiting the push card forward.

[0017] Furthermore, a convex bud is provided on the upper side of the push card, and an assembly slot is provided on the connecting portion of the armature part, and the convex bud of the push card is fitted into the assembly slot of the connecting portion of the armature part.

[0018] Furthermore, the upper side of the push card is recessed downward to form a limiting groove, the limiting groove has a rear opening that passes through the rear side of the push card, and the convex bulge is formed at the bottom of the limiting groove; the connecting part of the armature part is assembled in the limiting groove.

[0019] Furthermore, the limiting groove has a front side wall.

[0020] Furthermore, an assembly slot is provided on the upper side of the push card, and a downwardly extending convex burl is provided on the connecting portion of the armature part, and the convex burl of the connecting portion of the armature part fits into the assembly slot of the push card.

[0021] Furthermore, a slot is provided on the upper side of the push card, and the connecting portion of the armature part fits into the slot and forms a limit on the side of the push card away from the armature part by limiting the fit with the slot.

[0022] Furthermore, the card slot has a "T"-shaped or "L"-shaped structure, including a limiting slot body extending in the left-right direction and a limiting notch connecting the limiting slot body and passing through one side of the armature part, and the diameter of the limiting notch is smaller than the dimension of the limiting slot body extending in the left-right direction; the connecting part of the armature part also has a "T"-shaped or "L"-shaped structure, including an extension section extending in the front-back direction and a limiting section arranged at the end of the extension section and perpendicular to the extension section, the extension section is passed through the limiting notch, and the limiting section is engaged in the limiting slot body, and the push card forms a limit on the side of the push card away from the armature part through the limiting cooperation between the limiting section and the limiting slot body.

[0023] Furthermore, there are two contact modules, and the movable spring parts of the two contact modules are distributed on the left and right sides of the armature part. The push card is assembled with the armature part and the two movable spring parts at the same time and is supported in the air.

[0024] Furthermore, it also includes a base, and the magnetic circuit module and the contact module are both assembled on the base.

[0025] Furthermore, the base is also equipped with an auxiliary contact, and the movable spring of the auxiliary contact cooperates with the lower side of the push card.

[0026] Furthermore, a contact module is provided on the front side of the push card, and a movable spring portion of the front contact module forms a limit in the left and right directions with the push card.

[0027] The technical solution provided by the utility model has the following beneficial effects:

[0028] 1. The push card has a mounting notch with an opening facing downward, and the first mating portion of the movable spring portion is inserted into the mounting notch of the push card; the connecting portion of the armature portion is mated with the upper side of the push card; in this way, in actual assembly, the movable spring portion, the push card and the armature portion can be assembled in sequence from bottom to top, and mechanized assembly can be achieved.

[0029] 2. The movable spring also has a second mating portion that engages with the rear side of the push card and limits the push card in the left and right directions. Furthermore, the first and / or second mating portions limit the push card downward, while the connecting portion of the armature also limits the push card upward. This allows the movable spring, push card, and armature to be assembled sequentially from bottom to top, further ensuring stable assembly of the armature, push card, and movable spring. Furthermore, by limiting the upper and lower sides of the push card separately, the strength of the push card can be well maintained without requiring major modifications to the push card, ensuring its stability.

[0030] 3. The first matching portion forms a limit on the side of the push card away from the movable spring part, and the connecting portion of the armature part forms a limit on the side of the push card away from the armature part; on the basis of realizing that the movable spring part, the push card and the armature part can be overlapped and assembled in sequence from bottom to top, this setting can well limit the flipping of the push card and ensure stable operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 Shown is a front view of the internal structure of the relay in the embodiment;

[0032] Figure 2 Shown is a top view of the internal structure of the relay in the embodiment;

[0033] Figure 3 Shown Figure 2 A magnified schematic diagram of area A in the middle;

[0034] Figure 4 The figure shows a top view of the assembly structure of the armature part, the movable spring part and the push card in the embodiment;

[0035] Figure 5 The figure shows a three-dimensional schematic diagram of the assembly of the push card and two sets of dynamic spring parts in the embodiment;

[0036] Figure 6 Shown Figure 5 A magnified schematic diagram of area B in the middle;

[0037] Figure 7 The figure shows the structure of a single group of dynamic spring parts in the embodiment;

[0038] Figure 8 Shown is a schematic structural diagram of a push card in an embodiment;

[0039] Figure 9 The figure shows the assembly diagram of the push card in the left viewing position in the embodiment. Figure 1 ;

[0040] Figure 10 The figure shows the assembly diagram of the push card in the left viewing position in the embodiment. Figure 2 ;

[0041] Figure 11 Shown is a schematic diagram of the cooperation between the push card and the connecting portion in another embodiment;

[0042] Figure 12 FIG2 is a schematic diagram showing the cooperation between the push card and the connecting portion in yet another embodiment;

[0043] Figure 13 Shown is a schematic diagram of the cooperation between the push card and the connecting portion in another embodiment. DETAILED DESCRIPTION

[0044] To further illustrate various embodiments, the present invention is provided with accompanying drawings. These drawings form part of the disclosure of this invention and are primarily used to illustrate the embodiments and, in conjunction with the relevant description in the specification, to explain the operating principles of the embodiments. By referring to these drawings, those skilled in the art will understand other possible implementations and the advantages of this invention. The components in the figures are not drawn to scale, and similar reference numerals are generally used to represent similar components.

[0045] In the description of the present invention, the terms "up", "down", "left", "right", "front", "back" and other directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0046] The present invention will now be further described with reference to the accompanying drawings and specific implementation methods.

[0047] Example 1

[0048] Reference Figures 1 to 8 As shown, the relay provided in this embodiment includes a magnetic circuit module 1, a contact module 2 and a push card 30. Specifically, the components of the magnetic circuit module 1 and the contact module 2 are existing technologies. For example, the magnetic circuit module 1 includes a coil, a yoke assembly and an armature part 10. When the coil is energized, a magnetic field is generated. The yoke assembly acts as a magnetic conductor, and switching different magnetic fields drives the armature part 10 to swing back and forth. The contact module 2 includes corresponding static spring parts and dynamic spring parts 20. The dynamic spring part 20 and the armature part 10 are connected by the push card 30. The back and forth swinging of the armature part 10 drives the dynamic spring part 20 to perform opening and closing actions through the push card 30. Of course, in other embodiments, the specific structure of the magnetic circuit module 1 and / or the contact module 2 is not limited to this.

[0049] The armature portion 10 of the magnetic circuit module 1 and the movable spring portion 20 of the contact module 2 are arranged in the left-right direction, and the push card 30 is arranged in front of the armature portion 10 and the movable spring portion 20. The movable 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 downwardly opening mounting notch 31. The first mating portion 21 is inserted into the mounting notch 31 of the push card 30 and limits the push card 30 forward (i.e., away from the movable spring portion 20). Specifically, in this embodiment, the distal 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 distal end of the front limiting portion 211 is located in front of the push card 30, thereby limiting the push card 30 forward. Of course, in other embodiments, the structure of the first matching portion 21 is not limited thereto, as long as it can be inserted into the installation notch 31 of the push card 30 and form a forward limit for it.

[0050] The second engaging portion 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 engaging portion 22 also limits the push card 30 downward. A large gap exists between the upper end of the first engaging portion 21 and the upper sidewall of the mounting notch 31. In this embodiment, a bayonet 32 ​​is provided on the rear side of the push card 30. Specifically, the bayonet 32 ​​extends from the rear side to the front side, forming a completely through window. Of course, in other embodiments, the bayonet 32 ​​may not extend to the front side. The second engaging portion 22 includes an inserting portion 23 and a bent rear limiting portion 24. The inserting portion 23 is inserted into the bayonet 32 ​​of the push card 30, thereby limiting the push card 30 in at least the downward and left and right directions. The rear limiting portion 24 abuts against the rear side of the push card 30 to limit the push card 30 backward.

[0051] The armature portion 10 has a connecting portion 11 , which is engaged with the upper side of the push card 30 and forms an upward limit for the push card 30 .

[0052] In this way, the push card 30 cooperates with the armature part 10 and the movable spring part 20 to achieve six-direction limitation: up, down, left, right, front and back, so that the push card 30, the armature part 10 and the movable spring part 20 form a stable assembly. At the same time, in actual assembly, the movable spring part 20, the push card 30 and the armature part 10 can be assembled in sequence from bottom to top, which can realize mechanized assembly. The specific method is: Figure 9 and Figure 10As shown, the movable spring portion 20 is first fitted into place, and then the push card 30 is assembled from top to bottom, wherein the installation notch 31 of the push card 30 is aligned with the first mating portion 21 and installed downward. Preferably, to avoid interference between the push card 30 and other parts of the movable spring portion 20 (such as the second mating portion 22), the push card 30 is installed by tilting downward from front to back during assembly, so that the installation notch 31 is engaged with the first mating portion 21 and the rear side overlaps and engages with the second mating portion 22 of the movable spring portion 20. Finally, the armature portion 10 is installed, so that the connecting portion 11 of the armature portion 10 is engaged with the corresponding position on the upper side of the push card 30.

[0053] In actual use, the left and right swing of the armature part 10 drives the push card 30 to move left and right, and then drives the dynamic spring part 20 to perform the opening and closing operation. During the process, the left and right translation of the push card 30 is driven by the limit cooperation between the bayonet 32 ​​and the plug-in part 23 to drive the dynamic spring part 20 to move. In order to reduce the debris generated by the friction between the plug-in part 23 and the inner wall of the bayonet 32, in this embodiment, the upper and lower ends of the plug-in part 23 are both bent laterally to form an anti-scratch arc section 231, the shape of which is not limited, such as Figure 6 As shown, in this embodiment, the plug-in portion 23 is formed into a structure similar to a "C" shape; this effectively reduces the contact between the tip of the plug-in portion 23 and the inner wall of the bayonet 32, avoiding the generation of debris due to friction between the tip. At the same time, the upper and lower arc-shaped segments 231 and the bayonet 32 ​​form a limit in the vertical direction, which also effectively prevents the push card 30 from swinging and deflecting in the vertical direction. Of course, in other embodiments, the plug-in portion 23 can also be formed by bending one end (such as the upper end or the lower end) to form an "L" shape. Further preferably, the front end 232 of the plug-in portion 23 is also bent inward to minimize the exposure of the tip.

[0054] Furthermore, based on the upper and lower limits formed by the upper and lower arc segments 231 for the push card, the first matching portion 21 is set to form a distance between its upper end and the upper side wall of the installation notch 31, which can avoid the first matching portion 21 from contacting the upper side wall of the installation notch 31 and generating scraping.

[0055] Specifically, in order to ensure the strength of the push card 30 itself, in this embodiment, the front-to-back through-opening 32 is not connected to the installation notch 31 below.

[0056] The left and right limits or the upper and lower limits of the bayonet 32 ​​and the plug-in part 23 can be limits with 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 they can be complete limits, that is, the plug-in part 23 cannot move relatively in the bayonet 32.

[0057] When a clearance fit is adopted, it is further preferred that the distance between the plug-in portion 23 (specifically the arc-shaped segment 231 on the lower side of the plug-in portion 23) and the lower side wall of the bayonet 32 ​​is smaller than the distance between the connecting portion 11 of the armature portion 10 and the upper side of the push card 30; with such a configuration, when the push card 30 swings and deviates to one side, the push card 30 will first be moved upward by the plug-in portion 23 of the spring portion 20, while at this time a certain gap will still be retained between the connecting portion 11 of the armature portion 10 and the push card 30 to prevent the armature portion 11 from getting stuck when driving the push card 30 to move.

[0058] Furthermore, in order to synchronously realize the structure of the first matching portion 21, the plug-in portion 23 of the second matching portion 22 and the rear limiting portion 24 of the second matching portion 22, in this embodiment, the same dynamic spring portion 20 includes two dynamic spring leaves (respectively, the first dynamic spring leaf 201 and the second dynamic spring leaf 202), and the two dynamic spring leaves are in contact with each other; wherein, one dynamic spring leaf (the first dynamic spring leaf 201) forms the plug-in portion 23 of the first matching portion 21 and the second matching portion 22. In this embodiment, the plug-in portion 23 of the first matching portion 21 and the second matching portion 22 is formed by two forks branched from the same dynamic spring leaf (the first dynamic spring leaf 201); and the front end of the other dynamic spring leaf (the second dynamic spring leaf 202) is bent to form the said rear limiting portion 24, that is, the rear limiting portion 24 is a plate-like structure formed by bending, which has a good limiting effect and also effectively reduces the contact between the dynamic spring portion 20 and the tip of the pushing card 30. Of course, in other embodiments, the same dynamic spring portion 20 may be provided with one dynamic spring piece, or two or more dynamic spring pieces. When a single dynamic spring piece is used, the first engaging portion 21, the second engaging portion 22, and the rear limiting portion 24 are all formed on the same dynamic spring piece. Alternatively, the second engaging portion 22 is not limited thereto. For example, the second engaging portion 22 may be formed as a limiting recessed portion with an opening facing forward on the dynamic spring portion 20, and the rear side of the push card 30 may have a rearwardly protruding limiting protrusion. By engaging the limiting protrusion of the push card 30 with the limiting recessed portion of the dynamic spring portion 20, the push card 30 can also be limited in the rearward and leftward directions.

[0059] Specifically, the second engaging portion 22 also forms a rearward limit for the push card 30, making the limit of the push card 30 more comprehensive and the operation more reliable. Of course, in other embodiments, the push card 30 can also be not formed with a rearward limit. In this way, the armature portion 10 can also drive the dynamic spring portion 20 through the push card 30 to perform basic opening and closing operations.

[0060] The push card 30 is provided with a protrusion 33 on its upper side. The connecting portion 11 of the armature portion 10 is provided with a mounting slot 12. The protrusion 33 of the push card 30 fits within the mounting slot 12 of the connecting portion 11 of the armature portion 10. Specifically, the mounting slot 12 is an elongated slot, and a margin of fit is provided between the protrusion 33 and the mounting slot 12 to ensure that the swinging motion of the armature portion 10 and the left and right translation of the push card 30 do not interfere with each other.

[0061] Furthermore, the upper side of the push card 30 is recessed downwardly into a limiting groove 34. This 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 assembled within the limiting groove 34. This prevents the connecting portion 11 of the armature portion 10 from protruding from the upper side of the push card 30, achieving a compact assembly. Furthermore, the limiting groove 33 has a front sidewall 35, meaning that it does not completely penetrate the front side of the push card 30, effectively ensuring the strength of the push card 30.

[0062] Reference Figure 2 and Figure 4 As shown, the engagement of the mounting slot 12 of the armature portion 10 with the convex bulge 33 of the push card 30 also forms a forward limit for the push card 30. Specifically, the connecting portion 11 engages with the upper side of the push card 30 and limits the push card 30 forward (i.e., toward the side facing away from the push card 30). Thus, both the upper and lower sides of the push card 30 are forwardly limited. Since the push card 30 is positioned in front of the armature portion 10 and the movable spring portion 20, the rear side of the push card 30 is limited by the armature portion 10 and / or the movable spring portion 20 (in this embodiment, by the rear limiter 24). This effectively limits the forward and backward tilting of the push card 30, ensuring stable operation.

[0063] At the same time, the upper and lower sides of the push card 30 are limited respectively, and there is no need to make major changes to the push card 30 (such as there is no need to open the assembly slot 12 too deep), which can well maintain the strength of the push card 30 and ensure the stability of the push card 30.

[0064] Of course, in other embodiments, the setting of the push card 30 and the connecting portion 11 of the armature part 10 is not limited to this. For example, the positions of the convex 33 and the assembly slot 12 can also be interchanged, that is, the upper side of the push card 30 is provided with an assembly slot, and the connecting portion 11 of the armature part 10 is provided with a downwardly extending convex, and the convex of the connecting portion 11 of the armature part 10 is fitted into the assembly slot of the push card 30; in this way, assembly and limiting can also be achieved.

[0065] In this embodiment, the contact modules 2 comprise two groups, located on the left and right sides of the magnetic circuit module 1. Specifically, the two groups of movable spring portions 20 are located on the left and right sides of the armature portion 10, respectively. The push card 30 is assembled with both the armature portion 10 and the two groups of movable spring portions 20, thereby being suspended. Specifically, the left and right ends of the push card 30 are supported by the two groups of movable spring portions 20, respectively, while the upper portion of the push card 30 is constrained by the armature portion 10. This allows for a suspended arrangement without the need for additional support from external components, thereby reducing friction with external components and achieving better force transmission. Of course, in other embodiments, the contact modules 2 may be provided as a single group. In this case, the lower side of the push card 30 facing away from the contact module 2 requires support from other components.

[0066] 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 on the base 40, and the cover covers the magnetic circuit module 1, the contact module 2 and the push card 30 and is fixed to the base 40; realizing external packaging.

[0067] Furthermore, the base 40 is also equipped with an auxiliary contact 50. The movable spring 51 of the auxiliary contact 50 engages with the underside of the push card 30. The left and right translation of the push card 30 also drives the movable spring 51 of the auxiliary contact 50 to open and close the circuit breaker. Specifically, the auxiliary contact 50 is mounted on the base 40 without interfering with the mechanical assembly of the push card 30.

[0068] Example 2

[0069] This embodiment provides a relay having a structure substantially similar to that of the first embodiment, differing in that: in this embodiment, the first engaging portion 21 of the movable spring portion 20 is inserted into the mounting notch 31 of the push card 30, and the bent front stop 211 is located at the front side of the push card 30, thereby limiting the push card 30 in the forward direction. Simultaneously, the upper end of the first engaging portion 21 abuts against the upper sidewall of the mounting notch 31, limiting the push card 30 in the downward direction.

[0070] Specifically, in order to avoid scraping, the upper end of the first matching portion 21 in this embodiment is also bent.

[0071] Of course, in other embodiments, the downward limit of the push card 30 may also be limited by both the first matching portion 21 and the second matching portion 22 .

[0072] Example 3

[0073] The relay provided in this embodiment has a structure substantially similar to that of the first embodiment, except that: a contact module 2 is further provided on the front side of the push card 30, and the movable spring portion 20 of the front contact module 2 forms a left-right limit with the push card 30. For example, in this embodiment, there are four groups of contact modules 2, namely, two groups of contact modules 2 are provided on each of the left and right sides; the two groups of contact modules 2 on the same side are distributed on the front and back sides of the push card; that is, based on the structure provided in the first embodiment, a contact module 2 is added on the front side of the push card 30, and the limit of the push card 30 is still coordinated by the movable spring portion 20 on the back side (i.e., the coordination structure is consistent with the first embodiment); the newly added movable spring portion 20 of the front contact module 2 and the push card 30 only form a left-right limit, i.e., the push card 30 only needs to be able to drive the movable spring portion 20 of the front contact module 2 to operate.

[0074] Specifically, the movable spring portion 20 of the front contact module 2 can also be provided with an inserting portion 23, and can be inserted from the front side into the slot 31 of the push card 30 through the inserting portion 23. Accordingly, the thickness of the push card 30 can be increased to accommodate the insertion of the inserting portions 23 of the front and rear movable spring portions 20.

[0075] Example 4

[0076] The relay provided in this embodiment has a structure similar to that of the first embodiment, except that: Figure 11 As shown, the structure of the connection part 11 forming a forward limit on the upper side of the push card 30 is: a card slot 36 is provided on the upper side of the push card 30, and the connection part 11 of the armature part 10 is engaged in the card slot 36, and through the limiting cooperation with the card slot 36, the push card 30 is limited on the side away from the armature part 10 (the front side in this embodiment).

[0077] Specifically, the card slot 36 has a "T"-shaped structure, including a limiting slot body 37 extending in the left and right directions and a limiting notch 38 connecting the limiting slot body 37 and extending backward to the rear side wall of the pushing card 30, and the diameter of the limiting notch 38 is smaller than the size of the limiting slot body 37 extending in the left and right directions; the connecting portion 11 of the armature part 10 also has a "T"-shaped structure, including an extension section 13 extending in the front and back directions and a limiting section 14 arranged at the end of the extension section 13 and perpendicular to the extension section 13, the extension section 13 is passed through the limiting notch 38, and the limiting section 14 is engaged in the limiting slot body 37, and the pushing card 30 is limited forward by the limiting cooperation between the limiting section 14 and the limiting slot body 37; that is, the limiting section 14 cooperates with the rear side slot wall of the limiting slot body 37, thereby forming a forward limit for the pushing card 30.

[0078] Specifically, the above-mentioned limiting cooperation structure is used to realize that the connecting part 11 cooperates with the upper side of the push card 30 and forms a forward limit for the push card 30. The structural design is simple; and the card slot 36 does not need to be opened too deep, as long as the limiting cooperation is satisfied; it can well maintain the strength of the push card and ensure the stability of the push card.

[0079] Furthermore, in this embodiment, the card slot 36 does not penetrate the front side wall of the push card 30 , that is, the limiting groove body 37 also has a front side wall 361 , which better ensures the strength of the push card 30 .

[0080] At the same time, the connecting portion 11 does not protrude forward from the front side of the push card 30, does not take up extra space, and maintains the compactness of the relay.

[0081] Of course, in other embodiments, the matching structure of the slot 36 and the connecting portion 11 is not limited to this. Figure 12 As shown, 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 portion 11 can also be in an "L" shape, as long as the connecting portion 11 can form a forward limit for the push card 30.

[0082] Example 5

[0083] The relay provided in this embodiment has a structure similar to that of the first embodiment, except that: Figure 13 As shown, in this embodiment, the armature part 10 is located at the rear side of the push card 30, and it and the push card 30 also form at least a forward limit for the push card 30 through the cooperation of the convex bud 33 and the assembly slot 12 of the first embodiment; and the two groups of contact modules 2 are arranged on the front side of the push card 30, that is, the dynamic spring part 20 is located on the front side of the push card 30, and is inserted into the installation notch 31 of the push card 30 through the first matching part 21 and forms a limit on the side of the push card 30 away from the dynamic spring part 20 (that is, the rear side); thereby, it can well limit the flipping of the push card 30 in the front and rear directions, and ensure stable operation.

[0084] Although the present invention has been specifically shown and described in conjunction with the preferred embodiments, those skilled in the art should understand that various changes can be made to the form and details of the present invention without departing from the spirit and scope of the present invention as defined by the appended claims, and all of these changes are within the scope of protection of the present invention.

Claims

1. A relay comprising a magnetic circuit module, a contact module, and a push card, wherein the armature portion of the magnetic circuit module is connected to the movable spring portion of the contact module via the push card; characterized in that: The movable spring part has a first matching portion, the push card has a mounting notch with an opening facing downward, and the first matching portion is inserted into the mounting notch of the push card; the armature part has a connecting portion, and the connecting portion is matched with the upper side of the push card.

2. The relay according to claim 1, wherein: The armature part of the magnetic circuit module and the movable spring part of the contact module are arranged along the left and right directions, and the push card is arranged on the front side of the armature part and the movable spring part; the first matching part forms a forward limit for the push card, and the movable spring part also has a second matching part, and the second matching part cooperates with the push card and forms a left and right limit for the push card; and the first matching part and / or the second matching part forms a downward limit for the push card, and the connecting part of the armature part forms an upward limit for the push card.

3. The relay according to claim 1, wherein: The first matching portion forms a limit for the side of the push card away from the dynamic spring portion, and the connecting portion of the armature portion forms a limit for the side of the push card away from the armature portion.

4. The relay according to claim 3, wherein: The armature part of the magnetic circuit module and the movable spring part of the contact module are arranged in the left and right directions, and the push card is arranged on the front side of the armature part and the movable spring part; the first matching part forms a forward limit for the push card, and the connecting part of the armature part forms a forward limit for the push card.

5. The relay according to claim 2, wherein: A bayonet is provided on the rear side of the push card, and the second matching portion includes an inserting portion, which is inserted into the bayonet of the push card, thereby limiting the push card in the left and right directions.

6. The relay according to claim 5, characterized in that: The plug-in portion is inserted into the slot of the push card and also forms upward and downward limits for the push card.

7. The relay according to claim 6, characterized in that: The distance between the inserting portion and the lower side wall of the bayonet is smaller than the distance between the connecting portion of the armature part and the upper side of the push card.

8. The relay according to claim 5, characterized in that: The upper end and / or the lower end of the plug-in portion is bent laterally to form an arc-shaped section that is scratch-resistant.

9. The relay according to claim 2, wherein: The second matching portion also forms a rearward limit for the push card.

10. The relay according to claim 9, characterized in that: The second matching portion includes a bent rear limiting portion, which abuts against the rear side of the push card to limit the push card backward.

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

12. The relay according to claim 2 or 4, characterized in that: The upper side of the push card is provided with a convex bud, and the connecting portion of the armature part is provided with an assembly slot hole, and the convex bud of the push card is matched with the assembly slot hole of the connecting portion of the armature part.

13. The relay according to claim 12, wherein: The upper side of the push card is recessed downward to form a limiting groove, the limiting groove has a rear opening that passes through the rear side of the push card, and the convex bulge is formed at the bottom of the limiting groove; the connecting portion of the armature part is assembled in the limiting groove.

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

15. The relay according to claim 2 or 4, characterized in that: An assembly slot is provided on the upper side of the push card, and a downwardly extending convex burl is provided on the connecting portion of the armature part, and the convex burl of the connecting portion of the armature part is fitted into the assembly slot of the push card.

16. The relay according to claim 4, characterized in that: A slot is provided on the upper side of the push card, and the connecting portion of the armature part is fitted into the slot and forms a limit on the side of the push card away from the armature part by fitting with the limit of the slot.

17. The relay according to claim 16, characterized in that: The card slot is in a "T" or "L" shape, including a limiting slot body extending in the left and right directions and a limiting notch connecting the limiting slot body and passing through one side of the armature part, and the diameter of the limiting notch is smaller than the dimension of the limiting slot body extending in the left and right directions; the connecting part of the armature part is also in a "T" or "L" shape, including an extension section extending in the front and back directions and a limiting section arranged at the end of the extension section and perpendicular to the extension section, the extension section is passed through the limiting notch, and the limiting section is engaged with the limiting slot body, and the push card forms a limit on the side of the push card away from the armature part through the limiting cooperation between the limiting section and the limiting slot body.

18. The relay according to claim 2 or 4, characterized in that: There are two contact modules, and the movable spring parts of the two contact modules are distributed on the left and right sides of the armature part. The push card is assembled with the armature part and the two movable spring parts at the same time and is suspended and supported.

19. The relay according to claim 2 or 4, characterized in that: It also includes a base, and the magnetic circuit module and the contact module are both assembled on the base.

20. The relay according to claim 19, wherein: The base is also equipped with an auxiliary contact, and the movable spring of the auxiliary contact cooperates with the lower side of the push card.

21. The relay according to claim 2, wherein: The front side of the push card is further provided with a contact module, and the movable spring part of the front contact module forms a limit in the left and right directions with the push card.

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