Direct-current relay convenient to assemble and clamp thereof

Abstract

The invention discloses a direct-current relay convenient to assemble and a clamp thereof, and aims to solve the problems of high dispensing cost, unstable dispensing-free structure and inconvenience in assembly of a traditional relay. The relay comprises a shell and a base which are in interference fit to form a closed cavity. The base comprises a bottom plate, a fixed clamping plate and a movable clamping plate, and the movable clamping plate is stably and detachably connected with the bottom plate through a multi-insertion-connection structure composed of a connecting cylinder, a fixed protrusion and a clamping groove. The coil armature contact assembly is fixed through mechanical clamping in a dispensing-free mode, and the push piece is connected with the two clamping plates in a sliding mode and is in linkage with the armature and the contact. An observation window and a detachable magnetic blow-out magnet are integrated in the shell, and operation and maintenance are convenient to adapt to working conditions. The clamp comprises a base, a clamping assembly and a driving unit, can clamp the base and drive the base to turn over from a vertical state to a horizontal state, and adapts to the process of vertically installing a coil contact and horizontally installing an armature push piece. Dispensing is avoided, cost is reduced, efficiency is improved, the structure is stable and anti-vibration, and the assembling precision and efficiency are improved through the clamp.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of relays, in particular to a DC relay convenient to assemble and a clamp thereof. BACKGROUND

[0002] The DC relay is a core control component in the fields of electric power, automotive electronics and industrial automation, and the working reliability thereof highly depends on the precise assembly of core components such as a base, an electromagnetic system, a contact system and a shell. The magnetic circuit closing efficiency directly affects the stability of electromagnetic suction force, and the contact precision determines the reliability of circuit on-off, and the assembly quality of each component is the key to guarantee the performance of the relay.

[0003] The existing DC relay component fixing relies on a dispensing process, and the connection of the iron core and the base, the fixing of the armature and the assembly of the contact spring sheet all need to be positioned by dispensing. This method has the following disadvantages: additional equipment and consumables are needed, the glue amount control is complicated and time-consuming; meanwhile, the waiting for glue curing restricts batch production; and improper glue amount easily leads to component contamination or loose connection, affecting product reliability.

[0004] However, some existing DC relays adopt a dispensing-free design, which fixes the components through buckles, clamps or interference fit, but the existing DC relays have a complex connection and assembly structure, causing complicated assembly procedures, and the structure connection stability is poor, the buckle structure is prone to elastic fatigue after long-term use or vibration impact, so the position is easy to deviate, affecting the normal use of the product. SUMMARY

[0005] The main purpose of the present application is to provide a DC relay convenient to assemble and a clamp thereof, aiming to solve the problems of high cost, low efficiency and easy pollution and loose caused by the dependence of the traditional DC relay on the dispensing process, and the disadvantages of complicated assembly and easy deviation caused by the existing dispensing-free structure, and to solve the problem of inconvenient base posture adjustment during relay assembly.

[0006] To achieve the above-mentioned purpose, the present application provides a DC relay convenient to assemble, which comprises a shell and a base, the shell and the base form a closed cavity through interference fit to accommodate electrical elements; the base comprises a bottom plate, a fixed clamping plate and a movable clamping plate, the fixed clamping plate is integrally formed with the bottom plate, the movable clamping plate is detachably connected with the bottom plate through a multiple plug-in positioning structure, the multiple plug-in positioning structure can realize multi-directional stable positioning of the movable clamping plate and the bottom plate, and the movable clamping plate and the bottom plate can be quickly separated by using a tool. The electrical elements include a coil assembly, an armature assembly, a contact assembly and a push piece, the coil assembly and the contact assembly are fixed on the bottom plate through mechanical clamping or plug-in structure without dispensing, the armature assembly is rotationally connected between the fixed clamping plate and the movable clamping plate, and the push piece is slidingly connected between the two clamping plates and is linked with the armature assembly and the contact assembly respectively.

[0007] In a possible implementation, the multiple plug-in positioning structure comprises: the bottom plate is provided with a first connecting cylinder protruding therefrom, the first connecting cylinder is provided with a through first plug-in hole, the movable clamping plate is provided with a second connecting cylinder protruding therefrom correspondingly, the second connecting cylinder is inserted into the first connecting cylinder to form a stepped structure, and a through hole is formed in the middle of the second connecting cylinder and communicates with the first plug-in hole, so that the two form a tool passing channel; the bottom plate is provided with a partition plate, the partition plate is provided with a fixed protrusion protruding therefrom, the movable clamping plate is provided with a fixed hole correspondingly, and the fixed protrusion is in interference fit with the fixed hole; the movable clamping plate is provided with a first reinforcing column, the first reinforcing column is provided with a second clamping portion protruding therefrom, the second clamping portion is provided with a second clamping groove, and the second clamping groove is in plug-in fit with the partition plate; the three cooperate to achieve stable connection of the movable clamping plate and the bottom plate, and the movable clamping plate and the bottom plate can be quickly separated by means of a tool passing through the first plug-in hole and the through hole.

[0008] In a possible implementation, the coil assembly comprises a coil holder, at least two yoke irons and a core, the coil holder is provided with a second protruding portion and a third protruding portion at the bottom thereof, the bottom plate is provided with a second limiting hole correspondingly, the second protruding portion is in clamping connection with the second limiting hole, and the third protruding portion and the second protruding portion form a second groove therebetween, which is in clamping fit with the bottom plate; the core is inserted into the coil holder, and the core is provided with a first protruding portion protruding from both ends thereof; the coil holder is provided with a first groove at both ends thereof, the yoke iron is clamped in the first groove, and the yoke iron is provided with a second connecting hole, which is in plug-in fit with the first protruding portion; the yoke iron is provided with a fifth protruding portion protruding from both sides thereof, the fixed clamping plate and the movable clamping plate are provided with a third limiting hole correspondingly, and the fifth protruding portion is in plug-in fit with the third limiting hole.

[0009] In a possible implementation, the armature assembly comprises a bracket with an embedded magnet and two groups of armature pieces, the armature pieces are fixed to the bracket and correspond to the yoke irons one by one, each group of armature pieces is provided with two armature pieces, and an active gap with a thickness suitable for the yoke iron is formed between the two armature pieces; the armature piece is provided with a notch at the side facing the yoke iron, and the notch forms an inclined surface in abutment with the yoke iron; the bracket is provided with a rotating shaft protruding from both sides thereof, the fixed clamping plate and the movable clamping plate are provided with a rotating hole correspondingly, and the rotating shaft is in rotating fit with the rotating hole.

[0010] In one possible implementation, the contact assembly includes a moving piece, a stationary piece, and a moving spring. The moving piece and the moving spring are fixedly connected by a positioning protrusion. The base plate has a fixed platform, which has a first mounting groove and a second mounting groove. One end of the stationary piece is inserted into the first mounting groove, and the fixed ends of the moving piece and the moving spring are inserted into the second mounting groove. The inner wall of the second mounting groove has a positioning groove, and the positioning protrusion cooperates with the positioning groove. Sliding strips are protruding on both sides of the push piece. The fixed clamping plate and the movable clamping plate have corresponding sliding grooves, and the sliding strips are slidably engaged with the sliding grooves. The push piece has a driving groove and a mounting hole. The bracket has a linkage rod protruding, which engages with the driving groove. The moving spring has a "7"-shaped second limiting part, which engages with the mounting hole.

[0011] In one possible implementation, the outer casing has protruding positioning strips on both side walls, and the base has corresponding slide rails, with the positioning strips engaging with the slide rails; the top of the inner wall of the outer casing has a first limiting part and an inverted trapezoidal first abutting part, and the yoke has a corresponding first limiting hole, with the first limiting part inserted into the first limiting hole and the first abutting part abutting against the surface of the yoke; the outer casing has an observation window, and the top of the transmission push plate has an indicator plate extending outside the observation window; the outer casing has mounting frames on both sides, with magnetic blow magnets inside the mounting frames, and a strip groove on the side of the mounting frame away from the outer casing, with an elastic locking strip formed between the strip grooves, and a locking connector at the free end of the elastic locking strip, with the locking connector engaging with the magnetic blow magnet for limiting.

[0012] To facilitate adjustment of the placement state during DC relay assembly, the present invention also provides a DC relay clamp, including a base with a control component. A clamping component and a support platform located on one side of the clamping component are rotatably mounted on the base. The clamping component is connected to a drive unit of the control component. The clamping component can clamp the base of the relay and, through the drive unit, drive the base to flip towards the support platform, and flip it from an upright state to a horizontal state, so that the fixing plate on the base fits against the support platform.

[0013] In one possible implementation, a support member is provided on the base, and the clamping assembly is disposed on the support member, forming an movable gap between the clamping assembly and the base; the clamping assembly includes a support plate adapted to the base plate, and the support plate is provided with a first through hole and a second through hole corresponding to the positions of the contact assembly and the coil assembly, respectively. The first through hole is used for the static lead-out end to pass through, and the second through hole is used for the pin to pass through; it also includes limiting mechanisms disposed on both sides of the support plate, and the limiting mechanisms are used to clamp and fix the edges of the base plate.

[0014] In one possible implementation, the limiting mechanism includes connecting rods disposed on both sides of the support plate and extending outwards. A locking plate is slidably disposed on the connecting rods, and an abutment spring is disposed between the locking plate and the connecting rods. The abutment spring is used to drive the locking plate to move towards the support plate. The locking plate is disposed on both sides of the base plate, and a clamping surface that fits against the side wall of the base plate is disposed on the top of the locking plate. A pressing part located at the contact assembly is also disposed above the locking plate. The pressing part extends horizontally towards the base plate and forms a stepped shape with the locking plate, and is fitted against the upper surface of the base plate. An arc-shaped guide surface is also disposed above the pressing part. When the guide surface is pressed, it can drive the locking plate away from the support plate.

[0015] In one possible implementation, fixing components are symmetrically arranged on both sides of the bottom of the support plate opposite to the second through hole. The fixing components include a drive box disposed on one side of the second through hole. A telescopic shaft is slidably disposed on the side of the drive box opposite to the second through hole. A flexible clamping block is disposed at the end of the telescopic shaft. A return spring is disposed between the telescopic shaft and the drive box. The return spring is used to drive the flexible clamping block to slide towards the second through hole. The flexible clamping block is also provided with a square groove corresponding to the shape of the pin position. The square groove is chamfered on the side opposite to the support plate.

[0016] The beneficial effects of this invention are: Compared with the prior art, the DC relay in this application replaces the traditional dispensing process with mechanical snap-fit ​​and plug-in connection, such as the protrusion and hole matching between the wire frame and the base plate, and the positioning protrusion fixing of the moving plate and the moving spring, which saves glue consumables and curing time, reduces mass production costs, and avoids component contamination or loosening caused by improper glue amount.

[0017] The connecting cylinder assembly, fixed protrusion assembly, and clamping groove assembly of the movable clamp form a multi-directional stable limit, which can realize the stable installation and connection of the armature assembly and the coil assembly. Combined with the tool leverage design of the through-hole, it not only ensures the connection stability under vibration environment, but also realizes quick and non-destructive disassembly, solving the contradiction of "loose or difficult to disassemble" in traditional detachable structures.

[0018] The magnetic circuit and transmission system reduce the magnetic gap through multiple limiting of the yoke and the inclined surface design of the armature plate. The double snap-fit ​​linkage structure of the push plate ensures precise opening and closing of the contacts, improving electromagnetic attraction and operational reliability. The housing integrates functions such as observation window and detachable magnetic blow magnet, which can intuitively judge the contact status and adapt to different arc extinguishing conditions.

[0019] Meanwhile, the matching fixtures, through their posture flipping and elastic clamping design, assist the base in completing the process of vertically mounting the coil assembly and contact assembly, and horizontally mounting the armature assembly and push plate, making the assembly of the relay more convenient, faster and smoother. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0021] Figure 1 This is a perspective view of Example 1; Figure 2 This is an exploded view of Example 1; Figure 3 This is a schematic diagram of the internal structure of Example 1; Figure 4 This is a structural diagram of the electrical components in Example 1; Figure 5 This is a schematic diagram of the electrical component connections in Example 1; Figure 6 for Figure 5 Enlarged view at point A; Figure 7 This is a schematic diagram of the base structure in Example 1; Figure 8 This is a schematic diagram of the structure of the movable clamping plate and the base plate in Example 1; Figure 9 This is a schematic diagram of the movable clamping plate in Example 1; Figure 10 This is a diagram showing the internal structure of the outer shell in Example 1; Figure 11 This is a three-dimensional structural diagram of Example 2; Figure 12 This is a schematic diagram showing the interaction between the clamping component and the relay in Example 2; Figure 13 This is a perspective view of the clamping assembly in Example 2; Figure 14 This is a structural diagram of the driving component in Example 2; Figure 15 This is a structural diagram of the limiting mechanism in Example 2; Figure 16 This is a partial structural diagram of the fixing component in Example 2; Explanation of icon numbers: 100. Outer shell; 101. Positioning strip; 102. Slide rail; 103. Snap-fit ​​groove; 104. Observation window; 105. Indicator plate; 106. Magnetic blow magnet; 107. Mounting frame; 108. Strip groove; 109. Locking strip; 200. Base; 210. Base plate; 300. Coil assembly; 301. Wire frame; 302. Yoke; 303. Iron core; 304. Pin; 30. First protrusion; 31. First recess 32. Groove; 33. Second connecting hole; 34. Clearance groove; 35. First limiting part; 36. First limiting hole; 37. First abutting part; 38. Second limiting hole; 39. Third protrusion; 310. Second groove; 320. Fifth protrusion; 330. Third limiting hole; 340. First clamping part; 350. First clamping groove; 360. Fourth protrusion; 400. Armature assembly; 40. Bracket ; 41. Armature plate; 42. Rotating shaft; 43. Rotating hole; 44. Inclined surface; 500. Contact assembly; 501. Moving plate; 502. Stationary plate; 503. Moving spring; 504. Stationary contact; 505. Moving contact; 51. Fixed platform; 52. First mounting slot; 53. Second mounting slot; 54. Insertion hole; 55. Stationary lead-out end; 56. Moving lead-out end; 57. Positioning protrusion; 58. Positioning groove; 600. Push plate 61. Drive groove; 62. Linkage rod; 63. Mounting hole; 64. Second limiting part; 65. Slide groove; 66. Sliding bar; 700. Movable clamping plate; 701. Fixed clamping plate; 71. First connecting cylinder; 72. First insertion hole; 73. Second connecting cylinder; 74. Isolation plate; 75. Fixed protrusion; 76. Fixed hole; 77. First reinforcing column; 78. Second clamping part; 79. Second clamping groove; 710. Through hole; 01. Base; 02. Clamping assembly; 020. Support plate; 021. First through hole; 022. Second through hole; 023. Connecting rod; 024. Limiting nut; 025. Abutment spring; 026. Locking plate; 027. Clamping surface; 028. Pressing part; 029. Guide surface; 03. Support platform; 04. Gear motor; 05. Gear; 06. Rotating shaft; 07. Support component; 08. Fixing assembly; 080. Drive box; 081. Guide hole; 082. Telescopic shaft; 083. Flexible clamping block; 084. Return spring; 085. Square groove.

[0022] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0024] Example 1 See attached document Figures 1-10 This invention proposes a DC relay that is easy to assemble, comprising a housing 100 and a base 200 fixedly connected to each other. The housing 100 is fitted over the base 200 and connected to the base 200 by an interference fit. A cavity for accommodating electrical components is formed between the housing 100 and the base 200. The electrical components are connected to the base 200 by a connecting structure through snap-fit, fixed, or movable connection. The housing 100 then covers and protects the electrical components assembled on the base 200 and further presses the electrical components toward the base 200 to limit and fix the electrical components in the cavity, thereby improving the installation stability of the electrical components.

[0025] Specifically, such as Figures 4-7 As shown, the electrical components include a coil assembly 300, an armature assembly 400, and a contact assembly 500. The armature assembly 400 is connected to the contact assembly 500 through a transmission component. The transmission component is movably mounted on the base 200 and can drive the contact assembly 505 to close or open under the action of the armature assembly 400.

[0026] Among them, such as Figure 7 As shown, the base 200 includes a base plate 210, and the coil assembly 300 includes a wire frame 301, two yokes 302, and an iron core 303. The wire frame 301 is in the shape of an "I", and one end of it is snapped onto the base plate 210 through a first connecting structure. The wire frame 301 is also provided with a number of pins 304 with one end extending to the outside. The iron core 303 is inserted along the length of the wire frame 301, and both ends protrude from the two end faces of the wire frame 301 to form a first protrusion 30. At the same time, a first groove 31 with an opening on one side is provided on both end faces of the wire frame 301. The main bodies of the two yokes 302 are respectively snapped into the two first grooves 31, and one end of them bends and extends toward the armature assembly 400 through the opening.

[0027] Furthermore, in this embodiment, in order to improve the connection stability and strength between the first groove 31 on the wire frame 301 and the yoke 302, the end of the wire frame 301 near the base plate 210 is fitted to the base plate 210, and the first groove 31 corresponding to the base plate 210 is closed by the base plate 210, thereby limiting and fixing the yoke 302 on one side of the base plate 210; while the first groove 31 at the end away from the base plate 210 is closed by the top cover, thereby limiting and fixing the yoke 302.

[0028] Meanwhile, each of the two yokes 302 is provided with a second connecting hole 32 corresponding to the shape and position of the first protrusion 30. The yoke 302 is inserted into the first protrusion 30 at the end of the iron core 303 through the second connecting hole 32, thereby realizing the connection with the iron core 303 and restricting the movement of the yoke 302 in the opening direction, thereby further enhancing the connection stability of the yoke 302. In addition, a clearance groove 33 is provided on the base plate 210. The clearance groove 33 can avoid the first protrusion 30 at one end of the iron core 303, thereby avoiding interference between the iron core 303 and the base plate 210. A first limiting part 34 is provided protruding downward from the top of the inner wall of the shell. The first limiting part 34 is cylindrical and corresponds to the position of the yoke 302. A first limiting hole 35 corresponding to the first limiting part 34 is provided on the yoke 302 at the end away from the base plate 210. After the shell and the base 200 are connected, the first limiting part 34 can be inserted into the first limiting hole 35, thereby further limiting and fixing the yoke 302 and positioning the shell.

[0029] And, as Figure 10 As shown, a first abutment portion 36 protrudes downward from the top of the inner wall of the housing. In this embodiment, the first abutment portion 36 and the first limiting hole 35 are integrally formed and arranged in an inverted trapezoidal shape. When the first limiting portion 34 and the first limiting hole 35 are inserted, the end face of the first abutment portion 36 abuts against the surface of the yoke 302, and exerts a slight force on the yoke 302 to ensure the stability of the position of the yoke 302. The cooperation between the first abutment portion 36 and the first limiting portion 34 can limit the depth of the first limiting portion 34 inserted into the first limiting hole 35, avoiding the first limiting portion 34 being inserted too deeply into the first limiting hole 35, which would make it difficult to separate the yoke 302 from the housing during disassembly and affect the disassembly progress of the product.

[0030] To improve the stability, strength, and installation accuracy of the connection between the wire frame 301 and the base plate 210, a second protrusion 37 is formed on the bottom side of one end of the wire frame 301 relative to the base plate 210, extending downwards. A second limiting hole 38 is provided on the base plate 210 of the base 200 to engage with the second protrusion 37. The second protrusion 37 on the wire frame 301 and the second limiting hole 38 on the base plate 210 effectively position the wire frame 301. To prevent the installation position of the wire frame 301 from shifting and affecting the fitting accuracy between the yoke 302 and the armature assembly 400, the wire frame 301 extends to the outside of the base plate 210 on one side of the same end as the second protrusion 37. A third protrusion 39 extends from the bottom of the wire frame 301 towards the bottom of the base plate 210. The third protrusion 39 is flush with the bottom of the base plate 210 and has a certain gap from the second protrusion 37, forming a second groove 310 that engages with the base plate 210. The pin 304 passes through the wire frame 301, with one end passing through the third protrusion 39 and exposed to the outside.

[0031] In addition, such as Figures 7-9 As shown, the base 200 also includes a pair of clamping plates symmetrically arranged on both sides of the base plate 210. The clamping plates extend vertically from the base plate 210 towards the housing. To prevent the armature assembly 400 from impacting and colliding with the yoke 302 during engagement, causing the yoke 302 to loosen or shift its position, the yoke 302 has fifth protrusions 320 protruding from both sides of the clamping plates towards the clamping plates. Third limiting holes 330 are provided on the two clamping plates to engage with the five protrusions. The insertion and engagement of the third limiting hole 330 can limit and fix the bent and extended part of the yoke 302; at the same time, a first clamping part 340 is formed on a pair of clamping plates protruding towards the yoke 302 at the end away from the bottom plate 210. A first clamping groove 350 is provided between the first clamping parts 340. The first clamping groove 350 can engage with the yoke 302, thereby supporting and limiting the part of the yoke 302 away from the first groove 31, and preventing the yoke 302 from deforming and displacing under force.

[0032] And such Figures 3-4As shown, for the yoke 302 near the base plate 210, a fourth protrusion 360 is formed on the clamping plate protruding towards the yoke 302 near the base plate 210. The fourth protrusion 360 is located above the yoke 302 and can limit the yoke 302 to be placed on the base plate 210. Through the cooperation of the first clamping part 340 and the fourth protrusion 360, in conjunction with the iron core 303, the third limiting hole 330, the third protrusion 39 and the first groove 31, the yoke 302 can be limited and fixed in all directions, thereby maximally avoiding deformation or positional displacement of the yoke 302 during long-term use due to collision and vibration with the armature assembly 400, effectively improving the stability and strength of the yoke 302.

[0033] The armature assembly 400 is rotatably connected between a pair of clamps, specifically, as follows: Figures 5-6 As shown, the armature assembly 400 includes a bracket 40, in which a magnet is embedded. Two sets of armature plates 41, each cooperating with two yokes 302, are fixedly mounted on the bracket 40. Each set of armature plates 41 has two plates, with a movable gap between them greater than the thickness of the yoke 302. A rotating shaft 42 protrudes from both sides of the bracket 40 relative to the clamping plates, and a rotating hole 43 is provided on the two clamping plates to cooperate with the rotating shaft 42. The bracket 40 is rotatably connected between the pair of clamping plates through the rotating shaft 42, thereby enabling rotation.

[0034] To facilitate the assembly of the armature assembly 400, one or both of the two clamping plates can be detachably connected to the base plate 210; in this embodiment, such as Figures 8-9 As shown, only one of the two clamping plates is detachable, consisting of a fixed clamping plate 701 and a movable clamping plate 700. The fixed clamping plate 701 is integrally formed with the base plate 210, while the movable clamping plate 700 is detachably connected to the base plate 210.

[0035] Specifically, a first connecting cylinder 71 is protruding from the base plate 210. A first insertion hole 72 is provided on the side of the first connecting cylinder 71 opposite to the movable clamping plate 700. A second connecting cylinder 73 extends from the side of the movable clamping plate 700 opposite to the base plate 210 and is inserted into the first insertion hole 72. At the same time, an upwardly extending isolation plate 74 is provided on the base plate 210. A fixing protrusion 75 is provided on one side of the isolation plate 74 protruding towards the movable clamping plate 700. A fixing hole 76 is provided on the movable clamping plate 700 to be inserted into the fixing protrusion 75. In order to ensure the connection stability of the movable clamping plate 700, the fixing protrusion 75 and the fixing hole 76 are located in the upper half of the movable clamping plate 700, while the second connecting cylinder 73 and the first connecting cylinder 71 are located in the lower half of the movable clamping plate 700, thereby ensuring that the movable clamping plate 700 can be locked and limited both above and below to improve the strength and stability of the connection.

[0036] Furthermore, a first reinforcing post 77 with a certain thickness is formed extending from one side of the movable clamping plate 700 toward the isolation plate 74. The first reinforcing post 77 protrudes toward the isolation plate 74 to form a second clamping part 78. The second clamping part 78 is provided with a second clamping groove 79 that is inserted into the edge of the limiting plate. By inserting the second clamping groove 79 into the isolation plate 74, the position of the movable clamping plate 700 can be further limited, and the connection stability of the movable clamping plate 700 can be improved.

[0037] Meanwhile, the movable clamp 700, through the second clamping part 78, the first connecting cylinder 71 and the second connecting cylinder 73, and the fixing protrusion 75 and fixing hole 76, forms a multi-positioning connection structure, thereby improving the stability and positioning accuracy of the movable clamp 700 during installation.

[0038] Furthermore, regarding the connection structure between the movable clamping plate 700 and the base 200, the aforementioned connection structures all employ an interference fit to achieve a stable connection of the movable clamping plate 700. In order to improve the connection strength between the movable clamping plate 700 and the base 200 and the stability of the movable clamping plate 700, the second connecting cylinder 73 is inserted into the first connecting cylinder 71 to a considerable depth. Thus, when the movable clamping plate 700 is subjected to an outward force, the insertion and engagement of the first connecting cylinder 71 and the second connecting cylinder 73 can prevent the movable clamping plate 700 from tilting or bending outward, thus preventing the connection structure from detaching.

[0039] In order to facilitate the disassembly of the movable clamp 700 and the maintenance of the armature assembly 400, and to reduce the damage to the connection structure between the movable clamp 700 and the base 200 caused by excessive force during disassembly, as well as the problem that the product is too small and the user has difficulty gripping it, which makes it difficult to apply force and affect disassembly.

[0040] Therefore, in this embodiment, the first connecting cylinder 71 is integrally formed with the fixed clamping plate 701, and its insertion hole is through-hole arranged along its axial direction. The second connecting cylinder 73 has a through hole 710 communicating with the insertion hole in the middle. At the same time, the end of the second connecting cylinder 73 located inside the first connecting cylinder 71 has a certain thickness, so that the end of the second connecting cylinder 73 and the inner wall of the first connecting cylinder 71 form a stepped structure.

[0041] When disassembling the movable clamp 700, the user can first use a screwdriver or some thin and rigid tools to insert into the insertion hole at one end of the fixed clamp 701, thereby exerting a certain outward pushing force on the second connecting cylinder 73. Simultaneously, using tools such as hooks, which can be inserted into the through hole 710 on one side of the movable clamp 700, the end of the second connecting cylinder 73 can be hooked, and an outward pulling force can be applied. Through the combined action of the pushing and pulling forces on the movable clamp 700, the first connecting cylinder 71 and the second connecting cylinder 73 are separated. Finally, the connection structure between the movable clamp 700 and the base 200 is separated, thus achieving the disassembly of the movable clamp 700. This design effectively reduces the problem of manual disassembly of the movable clamp 700, which is hampered by the product's small size and difficulty in handling by workers.

[0042] Furthermore, such as Figure 6 As shown, in order to increase the contact area between the armature plate 41 and the yoke 302 on one side, reduce the contact gap, reduce the air gap, and reduce the magnetic resistance, a notch is provided on the side of the armature plate 41 opposite to the yoke 302 in this embodiment. The notch forms an inclined surface 44 on the armature plate 41 that is in contact with the yoke 302. The inclined surface 44 can be in close contact with the yoke 302 when the armature plate 41 swings towards the yoke 302, thereby increasing the contact area between the two.

[0043] Meanwhile, compared with the same specification armature assembly 400, a notch is provided on one side of the two adjacent armature pieces 41, which can increase the distance between the inclined surfaces 44 of the two armature pieces 41, thereby avoiding interference between the two armature pieces 41 and affecting the magnetic attraction of the yoke 302.

[0044] like Figures 3-4 As shown, the contact assembly 500 includes a moving piece 501, a stationary piece 502, and a moving spring 503. One end of the moving piece 501 and the moving spring 503 are fixedly connected and together fixed to the base 200. The end of the moving spring 503 away from the moving piece 501 is connected to the moving contact 505 and forms a free end that can be elastically deformed. The two ends of the stationary piece 502 are fixed to the base 200 and the housing, respectively, thereby ensuring the stability and firmness of the stationary piece 502 installation and preventing the stationary piece 502 from deforming and displacing when the contacts are in contact. The stationary contact 504 is fixed to the end of the stationary piece 502 opposite to the moving contact 505.

[0045] In order to achieve the fixed installation of the stationary plate 502 and the moving plate 501, such as Figure 7As shown, a fixed platform 51 is formed on the bottom plate 210 of the base 200. The fixed platform 51 is located on the other side of the isolation plate 74 away from the armature assembly 400, thereby separating the armature assembly 400 and the contact assembly 500 and avoiding mutual interference between them. A first mounting groove 52 and a second mounting groove 53 are provided on the fixed platform 51. The first mounting groove 52 is used to insert and cooperate with one end of the stationary piece 502, and the second mounting groove 53 is used to insert and cooperate with one end of the moving spring 503 and the moving piece 501, thereby realizing the assembly and fixation of the ends of the stationary piece 502 and the moving piece 501.

[0046] The base plate 210 is provided with two sets of insertion holes 54 that are respectively connected to the first mounting groove 52 and the second mounting groove 53. One end of the stationary piece 502 inserted into the first mounting groove 52 extends downward to form a pair of stationary leads 55. The pair of stationary leads 55 are inserted into the insertion holes 54 and extend to the outside. The other end of the movable piece 501 inserted into the second mounting groove 53 extends downward to form a pair of movable leads 56. The pair of movable leads 56 are inserted into the insertion holes 54 and extend to the outside.

[0047] At the same time, such as Figure 6 As shown, since one end of the moving piece 501 is connected to the moving spring 503, in order to ensure a stable connection between the moving spring 503 and the moving piece 501 and to ensure that the moving spring 503 can be stably and accurately fixed in the second mounting groove 53, so that the moving contact 505 can accurately correspond and cooperate with the stationary contact 504, two or more positioning protrusions 57 are formed on the side of the moving piece 501 opposite to the moving spring 503, which will pass through the moving spring 503. One end of the moving spring 503 is inserted into and fixed to the positioning protrusion 57. At the same time, a positioning groove 58 corresponding to the positioning protrusion 57 is provided on the inner wall of the second mounting groove 53. Through the insertion of the positioning protrusion 57 and the positioning groove 58, the moving spring 503 can be guided when the moving spring 503 and the moving piece 501 are installed, thereby ensuring the accurate and stable position of the moving spring 503 and avoiding vibration of the moving spring 503 during long-term operation, which may cause the moving spring 503 to loosen or shift its position.

[0048] In addition, the armature assembly 400 and the contact assembly 500 are linked by a transmission component.

[0049] like Figure 4 , 5As shown in Figures 7 and 8, the transmission component adopts a push plate 600, which is slidably disposed between two clamping plates. A drive groove 61 that cooperates with the bracket 40 is provided below the push plate 600. A linkage rod 62 that engages with the drive groove 61 is integrally provided on the bracket 40. A mounting hole 63 is provided at one end of the push plate 600 relative to the moving spring 503. A second limiting part 64 that engages with the mounting hole 63 is formed at one end of the moving spring 503 relative to the push plate 600. The second limiting part 64 is in the shape of a "7" and is used to pass through the mounting hole 63 on the push plate 600 and engage with the push plate 600, thereby achieving a stable connection with the push plate 600 and preventing the push plate 600 and the moving spring 503 from falling off and separating during movement.

[0050] As for the sliding connection between the push plate 600 and the two clamping plates, specifically, the two clamping plates have a sliding groove 65 on one side of the push plate 600, and sliding strips 66 protrude on both sides of the push plate 600 and are slidably connected to the sliding groove 65. The push plate 600 can be assembled through the cooperation between the sliding strips 66 and the sliding groove 65.

[0051] Through the aforementioned connection structure, the relay's contact assembly 500, coil assembly 300, armature assembly 400, and push plate 600 are directly mounted on the base 200, ensuring stable and strong connections between them. Finally, the outer casing 100 is directly placed over the base 200, achieving enclosure of the electrical components. This structure exposes the internal electrical components of the relay to the greatest extent, allowing for convenient assembly and disassembly of the components during maintenance or assembly, making assembly more convenient and faster. Simultaneously, the connection structure between the components allows them to be stably and accurately mounted on the base 200 without the outer casing 100, preventing loosening or separation, thus improving the connection strength, stability, and accuracy of the internal electrical components of the relay.

[0052] As for the outer casing 100, such as Figure 7 , 10 As shown, two symmetrically arranged positioning strips 101 are protruding on both sides of the outer shell 100, and slide rails 102 located on the outer side of the two side clamps are provided on the base plate. When assembling the outer shell 100 and the base 200, the precise docking of the outer shell 100 and the base 200 and the stable connection after installation can be ensured by the cooperation of the positioning strips 101 and the slide rails 102, thereby reducing the loosening between the outer shell 100 and the base 200.

[0053] In addition, a snap-fit ​​groove 103 corresponding to the end position of the stationary piece 502 is provided on the top of the inner wall of the housing 100. After the housing 100 and the base 200 are assembled, the snap-fit ​​groove 103 can be inserted into the end of the stationary piece 502, thereby improving the strength and stability of the stationary piece 502 installation.

[0054] In addition, to facilitate the observation of the state between the contacts inside the relay, an observation window 104 corresponding to the position of the push plate 600 is provided on the housing 100. An indicator plate 105 extending out of the observation window 104 is provided on the top of the push plate 600. By observing the position of the indicator plate 105, the operator can clearly know whether the moving contact 505 and the stationary contact 504 are in a separated or attached state, so as to determine whether the relay is in a energized state.

[0055] In addition, to prevent the moving contact 505 and the stationary contact 504 from generating an electric arc when they come into contact or separate, magnetic blow magnets 106 are provided on both sides of the housing 100 at corresponding positions of the moving contact 505 and the stationary contact 504. The directional magnetic field generated by the magnetic blow magnets 106 applies a Lorentz force to the electric arc generated when the contacts break, forcibly stretching the arc away from the contacts and cooling it rapidly, thereby significantly shortening the arcing time. This process can effectively reduce the erosion and welding adhesion of the contacts by the high-temperature electric arc, significantly extend the contact's electrical life, and at the same time prevent the electric arc from burning the insulating parts of the housing 100.

[0056] And such Figures 1-2 As shown, the magnetic blown magnet 106 is detachably connected to the outer casing 100. Specifically, mounting frames 107 protrude from both sides of the outer casing 100 to accommodate the magnetic blown magnet 106. A pair of spaced-apart strip grooves 108 are provided on the side of the mounting frame 107 away from the outer casing 100. A retaining strip 109 with one free end and elastic deformation is formed between the pair of strip grooves 108. A tapered retaining connector is provided at the free end of the retaining strip 109. When the magnetic blown magnet 106 is placed in the mounting frame 107, the retaining connector can limit and fix the magnetic blown magnet 106. When disassembling, the retaining strip 109 can be pried outward to move the retaining connector away from the magnetic blown magnet 106, thereby separating the magnetic blown magnet 106.

[0057] By making the magnetic blow-out magnet detachable from the outer casing 100, it can adapt to different operating conditions. In scenarios where strong arc extinguishing is not required, such as low voltage and low current, the magnet can be removed to avoid structural redundancy or magnetic field interference. It facilitates maintenance and replacement. After the magnet demagnetizes from long-term use, it can be removed and replaced separately without replacing the entire relay, which greatly reduces maintenance costs. It helps with production debugging. It can be flexibly disassembled and assembled during production or testing to compare the performance differences with and without the magnetic blow-out magnet. It can also adapt to relays with different contact specifications, improving product versatility. In special scenarios, when the magnetic blow-out structure needs to be temporarily removed for maintenance or temporary use, the detachable design does not damage the outer casing 100, making operation more convenient.

[0058] Based on the above structural functions, the assembly steps of the relay are as follows; 1. Pre-treatment of vertical placement of base 200: Place base 200 vertically (base plate 210 facing down, clamping plate facing up), retain only the fixed clamping plate 701 integrally formed with base plate 210, and do not install the movable clamping plate 700 for the time being, forming a semi-open assembly frame.

[0059] 2. Vertical installation of coil assembly 300: Align the wire frame 301 with the base plate 210, and use the second protrusion 37 to engage with the second limiting hole 38 and the third protrusion 39 to engage with and position the base plate 210; the iron core 303 passes through the wire frame 301, with the first protrusions 30 at both ends protruding from the wire frame 301; insert the two yokes 302 into the first grooves 31 at both ends of the wire frame 301 respectively, and connect them to the first protrusions 30 of the iron core 303 through the second connecting hole 32. At the same time, the third protrusion 39 of the yoke 302 is inserted into the third limiting hole 330 of the fixing clamp 701. The first clamping part 340 and the fourth protrusion 360 respectively limit and support the yoke 302, thus completing the fixing of the coil assembly 300.

[0060] 3. Vertical installation of contact assembly 500: After the moving piece 501 and the moving spring 503 are fixed by the positioning protrusion 57, they are vertically inserted into the second mounting groove 53 of the base plate 210, and the positioning protrusion 57 is engaged in the positioning groove 58; one end of the stationary piece 502 is vertically inserted into the first mounting groove 52, and the moving and stationary lead-out ends 55 extend through the insertion hole 54 of the base plate 210 respectively; the positions of the moving and stationary contacts 504 are calibrated to ensure accurate correspondence, and the vertical state is used to avoid component displacement.

[0061] 4. Base 200 is switched to a flat position: Flip the base 200 to a flat position with the fixed clamp 701 side facing down and the open movable clamp 700 side facing up, exposing the linkage area of ​​the coil assembly 300 and the contact assembly 500, which facilitates the subsequent assembly of components.

[0062] 5. Armature assembly 400 assembly: Place the armature assembly 400 with embedded magnet into the open area, align the rotating shaft 42 on one side of the bracket 40 with the rotating hole 43 of the fixed clamp 701, adjust the position so that the inclined surface 44 of the armature plate 41 faces the yoke 302 and the movable gap is adapted to the thickness of the yoke 302, and complete the single-sided rotating connection of the armature assembly 400.

[0063] 6. Push plate 600 docking: Insert the sliding strip 66 on one side of the push plate 600 into the sliding groove 65 of the fixed clamping plate 701, and engage the drive groove 61 of the push plate 600 with the linkage rod 62 of the armature assembly 400. At the same time, make the "7"-shaped second limiting part 64 of the moving spring 503 pass through the mounting hole 63 of the push plate 600 and lock it in place to ensure smooth transmission without jamming.

[0064] 7. Closed installation of movable clamping plate 700: The movable clamping plate 700 is inserted into the first connecting cylinder 71 of the base plate 210 through the second connecting cylinder 73, the fixed protrusion 75 is engaged with the fixed hole 76, and the second clamping groove 79 is engaged with the isolation plate 74, with multiple interference fits for fixation; at the same time, the sliding strip 66 on the other side of the push plate 600 is engaged into the sliding groove 65 of the movable clamping plate 700, and the other rotating shaft 42 of the armature assembly 400 is embedded in the rotating hole 43 of the movable clamping plate 700, thus completing the overall frame closure.

[0065] 8. Encapsulation of the outer shell 100: Align the positioning strip 101 of the outer shell 100 with the slide rail 102 of the base 200, fit it along the slide rail 102 and make it interference fit with the base 200; make the first limiting part 34 of the inner wall of the outer shell 100 insert into the first limiting hole 35 of the yoke 302, the first abutting part 36 abut against the yoke 302, and the snap-fit ​​groove 103 snaps into the end of the stationary piece 502, so as to realize the secondary fixation and sealing protection of the internal components.

[0066] 9. Assembly of magnetic blow magnet 106: According to the working conditions, place the magnetic blow magnet 106 into the mounting frames 107 on both sides of the housing 100 and fix it by the locking joint of the elastic clip 109; this step can be omitted when the arc extinguishing function is not required.

[0067] Example 2 like Figures 11-16 As shown, in order to assemble the DC relay described in Embodiment 1 and to allow the base 200 to adjust its placement angle according to the assembled components, thereby improving assembly efficiency, a clamp for the DC relay is proposed in this embodiment. Specifically, the clamp is made of a combination of high-strength aluminum alloy and engineering plastics, balancing structural rigidity and lightweight requirements. Figure 1 As shown, it mainly includes a base 01 with control components, a clamping component 02 with a rotating configuration, a support platform 03, and a drive unit.

[0068] The base 01 is a rectangular load-bearing structure. The bottom can be equipped with a guide groove structure for connecting with automated assembly equipment. The guide groove can be connected with the guide rail on the automated assembly equipment to fix the base.

[0069] The base 01 is hollow and integrates an embedded PLC control module with a reserved communication interface to realize production line linkage. A sensor control unit connected to the control module is set on the base. The sensor control unit can be linked with the main control module and equipment components on the automated assembly equipment to control and drive the drive unit. When the base 01 reaches the corresponding work position, the sensor control unit is triggered to flip the clamping component to the corresponding working state.

[0070] The sensor control unit of base 01 specifically includes: firstly, a station detection sensor (Hall effect type), installed on the side of the base. When the fixture arrives at the designated assembly station along the conveyor line, the sensor is triggered and sends a "station ready" signal to the PLC; secondly, a safety light curtain sensor, surrounding the top of the base. If there is a foreign object in the work area, it immediately sends a stop signal to the PLC to ensure human and machine safety; and thirdly, a signal relay module, which unifies the signals from various structural sensors to the PLC to achieve "sensing-judgment-execution" closed-loop control. After receiving the sensor signals, the PLC drives the drive unit and telescopic cylinder through a preset program to ensure that the fixture state is accurately matched with the assembly process.

[0071] The drive unit uses a miniature geared motor 04 with an absolute encoder. The encoder provides real-time feedback on the flipping angle, which, together with the PLC, achieves precise matching between the flipping action and the production line rhythm, ensuring a smooth and shock-free flipping process. The motor is connected to the rotating shaft 06 of the clamping assembly 02 via gear 05. High-precision deep groove ball bearings can be fitted at both ends of the rotating shaft 06 to reduce flipping resistance and noise.

[0072] like Figure 1 As shown, two support members 07 are fixedly installed on the upper surface of the base 01 near the edge. The support member 07 is a vertically extending steel plate column, and its bottom is fastened to the base 01 by bolts. The clamping assembly 02 is installed between the two support members 07 through the rotating shaft 06, so that the clamping assembly 02 and the upper surface of the base 01 form a reasonable movement gap, completely avoiding friction or interference between the clamping assembly 02 and the base 01 during the flipping process.

[0073] The support platform 03 is located at the end of the flipping trajectory of the clamping component 02. It is a rectangular platform, and its top surface is completely flush with the bottom surface of the fixed clamping plate 701 when the clamping component 02 is flipped to the horizontal state. This ensures that the base 200 forms a surface contact support after it is horizontal, thus avoiding posture deviation caused by local force.

[0074] Among them, such as Figures 12-16 As shown, the clamping component 02 is the core for achieving precise fixation of the base 200, including a support plate 020 that is fully compatible with the base plate 210 of the relay base 200 in Embodiment 1, side limiting mechanisms, and bottom fixing component 08.

[0075] like Figure 13As shown, the support plate 020 is a rectangular flat plate that matches the shape and size of the base plate 210 of the base 200. It is formed by stamping stainless steel plate. According to the precise layout of the contact assembly 500 and coil assembly 300 on the base 200, a first through hole 021 and a second through hole 022 are provided on it. The size of the first through hole 021 matches the stationary lead-out end 55 and corresponds to the position of the stationary lead-out end 55 of the contact assembly 500, ensuring that the stationary lead-out end 55 passes through vertically without jamming, while avoiding radial shaking. The second through hole 022 is a hole that perfectly matches the distribution of the pins 304 of the wire frame 301. The hole wall is chamfered to facilitate the smooth passage of the pins 304. At the same time, a sensor control unit is also provided on the support plate. The sensor control unit is used to detect the positioning of the base. If the base is placed in place under the control of the robot, it will be transferred to the next station.

[0076] Its sensor control unit is the "base positioning and clamping detection subsystem": the support plate 020 has a side-mounted photoelectric base positioning sensor - when the robot places the base according to the positioning pin, the sensor detects the base bottom surface contact signal and immediately uploads it to the PLC.

[0077] In addition, such as Figure 15 As shown, the clamping assembly 02 is symmetrically provided with limiting mechanisms on both sides to achieve dual fixation of the base plate 210 edge of the base 200 by "side wall clamping + upper surface pressing", ensuring that the base 200 does not loosen or shift during the flipping process.

[0078] Specifically, the limiting mechanism includes cylindrical connecting rods 023 fixed to both sides of the support plate 020. One end of the connecting rod 023 is welded perpendicularly to the support plate 020, and the other end is threadedly connected to a limiting nut 024 to limit the stroke of the abutment spring 025. A locking plate 026 is slidably sleeved on the connecting rod 023. The locking plate 026 is made of engineering plastic injection molding, combining rigidity and toughness. A cylindrical helical abutment spring 025 is sleeved between the locking plate 026 and the connecting rod 023. One end of the spring abuts against the inner wall of the vertical section of the locking plate 026, and the other end abuts against the limiting nut 024, always applying a preload force to the locking plate 026 in the direction of the support plate 020.

[0079] The inner side of the vertical section of the locking plate 026 is machined with a knurled anti-slip clamping surface 027, which enhances clamping stability by increasing friction. The horizontal section extends horizontally towards the support plate 020 to form a pressing part 028 located above the contact assembly 500. The pressing part 028 and the vertical section form a stepped structure, and its lower surface is completely in contact with the upper surface of the base plate 210 of the base 200, which can counteract the centrifugal force during flipping and prevent the base 200 from moving upward. The free end of the pressing part 028 is machined with an arc-shaped guide surface 029. The guide surface 029 gradually slopes downward from the edge to the inside. When the base 200 is placed downward, the guide surface 029 contacts and is pressed against the upper surface of the base plate 210, which can drive the locking plate 026 to slide outward along the connecting rod 023. No manual control is required. When the robot arm on the automated assembly equipment clamps the base and places the base from top to bottom, the base 200 can be quickly placed in. After being released, the abutment spring 025 immediately resets, and the locking plate 026 automatically clamps the base 200.

[0080] Meanwhile, telescopic cylinders are installed at both ends of the base, located on the locking plate. These cylinders abut against the inner walls of the locking plate, driving the locking plate away from the support plate to release the base. The telescopic cylinders are mini telescopic cylinders, with the piston rod abutting against the inner wall of the locking plate. An air pipe connects to a solenoid valve built into the base, controlled by a PLC. When the base needs to be released, the PLC triggers the solenoid valve to supply air, causing the cylinder to push the locking plate outward along the connecting rod, releasing the clamp. After the part is removed, the PLC controls the exhaust, and a spring drives the locking plate to reset.

[0081] Furthermore, such as Figure 16 As shown, the bottom of the support plate 020 is symmetrically provided with fixing components 08 on both sides of the second through hole 022. These components are specifically designed to precisely limit and protect the pins 304 of the coil assembly 300, preventing the pins 304 from bending or scratching during assembly or flipping.

[0082] Specifically, the fixing component 08 includes a drive box 080 fixed to the bottom of the support plate 020 by bolts. The drive box 080 is a rectangular shell structure with a hollow interior. A guide hole 081 is machined on one side of the drive box 080 opposite to the second through hole 022, through which a stainless steel telescopic shaft 082 slides. The end of the telescopic shaft 082 extends out of the drive box 080 and is fixed with a flexible clamping block 083 by adhesive. The flexible clamping block 083 is made of silicone, which is soft and has a certain degree of elasticity, thus avoiding scratches or indentations on the pins 304 caused by rigid contact. A limiting ring is provided at one end of the telescopic shaft 082 inside the drive box 080. A return spring 084 is provided inside the drive box 080. The return spring 084 is sleeved on the outside of the telescopic shaft 082, with one end abutting against the inner wall of the drive box 080 and the other end abutting against the limiting ring, constantly driving the flexible clamping block 083 to slide towards the second through hole 022. The flexible clamping block 083 has square grooves 085 that correspond one-to-one with the position and shape of the pin 304, ensuring that the pin 304 is firmly inserted without being squeezed or deformed. The side of the square groove 085 opposite to the support plate 020 is chamfered to form a guide entrance, which facilitates the flexible clamping block 083 to slide outward when the pin 304 is inserted, ensuring that the pin 304 is smoothly inserted into the center position of the square groove 085.

[0083] In this embodiment, the sensor control unit is not disclosed in the figure. Its actual installation position is adapted to the automated assembly equipment and is adjusted according to the components on the assembly equipment.

[0084] The working process of this fixture is completely compatible with the assembly process of the DC relay described in Example 1. Through the precise coordination of structure and process, efficient and stable assembly is achieved, as detailed below: 1. Station Triggering and Standby: As the fixture moves along the conveyor line, the station detection sensor on the base senses the station positioning block and sends a "positioning" signal to the PLC. The PLC immediately uploads the fixture status to the main controller of the production line. The main controller responds with a "waiting for loading" instruction, and the fixture enters the standby state.

[0085] 2. Automated feeding and positioning: The production line robot grabs the base 200 without the movable clamping plate 700 and places it on the plate from top to bottom. When the bottom surface of the base is in contact with the support plate, the base positioning sensor on the plate sends a "material placement in place" signal, and the PLC starts the clamping program.

[0086] 3. Automatic Clamping and Confirmation: The abutment spring 025 drives the locking plate 026 to slide inward, the clamping surface 027 adheres to the side wall of the base plate, and the pressing part 028 presses against the upper surface of the base plate; simultaneously, the return spring 084 of the fixing component 08 drives the flexible clamping block 083 to clamp the pin 304. After the clamping force sensor of the locking plate detects that the pressure reaches the standard, it sends a "clamping secure" signal to the PLC, and the PLC then feeds back to the main controller to start the upright assembly process.

[0087] 4. Vertical Automated Assembly: The automated press-fitting machine vertically inserts the coil assembly 300 and contact assembly 500 into the base sequentially according to the program. The avoidance design of the first through hole 021 and the second through hole 022 ensures that there is no interference between the stationary lead-out end 55 and the pin 304; during the assembly process, the PLC receives the "complete" signal from the assembly equipment in real time until the vertical assembly process is completed.

[0088] 5. Automatic posture switching: After receiving the "upright assembly complete" signal, the PLC drives the geared motor 04 to start, causing the clamping assembly 02 to slowly rotate around the rotation axis 06. The encoder transmits angle data in real time. When it rotates to 90°, the pressure sensor of the support platform 03 detects the base contact signal and immediately feeds it back to the PLC. The PLC controls the motor to lock and sends a "level ready" signal to the main controller.

[0089] 6. Horizontal Automated Assembly: Another robotic arm, following the program, sequentially assembles the armature assembly 400, the docking pusher 600, and the movable clamping plate 700. The entire process is maintained by a limit mechanism, ensuring the base remains stable and guaranteeing precise docking of the transmission components. After each assembly step, the equipment sends a signal to the PLC, forming a closed-loop process.

[0090] 7. Automatic Unlocking and Retrieval: After the internal components are assembled, the main controller sends a "retrieve" command to the PLC. The PLC controls the solenoid valve of the telescopic cylinder to supply air, and the cylinder pushes the locking plate outward, separating the clamping surface from the pressing part. The operator or robot gently pulls the flexible clamping block outward, and the square slot disengages from the pin. After the PLC confirms "unlocking complete," it sends a signal to the retrieval robot, which then grabs the base and moves it to the outer shell packaging station.

[0091] 8. Fixture Reset and Standby: After the picking robot sends a "successful gripping" signal, the PLC controls the telescopic cylinder to exhaust air, and the locking plate resets under the action of the spring; at the same time, the drive motor rotates in the opposite direction, driving the gripping assembly back to the upright state, the sensor system resets, and waits for the next base to be loaded, completing one work cycle.

[0092] Through the above design, the sensor control unit achieves "full-process status perception", the telescopic cylinder works with the PLC to complete "automatic clamping and unlocking", and the control module acts as the central hub to achieve deep linkage with the production line. This not only solves the problems of low efficiency and easy damage of manual operation, but also ensures assembly accuracy through precise control, and is fully adapted to the needs of mass automated production.

[0093] This fixture is perfectly matched to the DC relay described in Embodiment 1: the "side wall clamping + upper surface pressing" design of the limiting mechanism, combined with the continuous preload of the abutment spring 025, ensures that the base 200 maintains a stable posture throughout the flipping and assembly process, effectively preventing component displacement from affecting assembly accuracy; the dimensions and positions of the first through hole 021 and the second through hole 022 precisely match the relay structure, achieving interference-free assembly and improving operational smoothness; the flexible clamping block 083 and square groove 085 design of the fixing component 08 not only achieves precise positioning of the pin 304, but also prevents the pin 304 from being scratched or bent through soft material, protecting the integrity of the component; the "upright-horizontal" automated flipping function perfectly matches the assembly process of Embodiment 1, reducing the labor intensity of manual flipping and preventing component collisions through smooth flipping, further improving assembly quality; the control component supports manual and external linkage control, can be embedded in automated production lines to meet the needs of mass production, and the core components are made of high-strength materials and precision machining to ensure a long service life and low maintenance costs.

[0094] In the accompanying drawings of this embodiment, the same or similar reference numerals correspond to the same or similar components. In the description of this application, it should be understood that if terms such as "upper," "lower," "left," "right," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, they are only for the convenience of describing this application and simplifying the description, and do not 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, the terms used to describe positional relationships in the accompanying drawings are only for illustrative purposes and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0095] The above are merely preferred embodiments of this application and are not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A DC relay for easy assembly, comprising a housing (100) and a base (200), wherein the housing (100) and the base (200) are formed by an interference fit to create a closed cavity for accommodating electrical components; characterized in that, The base (200) includes a base plate (210), a fixed clamping plate (701), and a movable clamping plate (700). The fixed clamping plate (701) is integrally formed with the base plate (210). The movable clamping plate (700) is detachably connected to the base plate (210) through a multi-plug positioning structure. The multi-plug positioning structure can realize multi-directional stable positioning of the movable clamping plate (700) and the base plate (210), and can be quickly separated by tools. The electrical components include a coil assembly (300), an armature assembly (400), a contact assembly (500), and a pusher plate (600). The coil assembly (300) and the contact assembly (500) are fixed to the base plate (210) without glue by mechanical snap-fit ​​or plug-in structure. The armature assembly (400) is rotatably connected between the fixed clamping plate (701) and the movable clamping plate (700). The pusher plate (600) is slidably connected between the two clamping plates and is linked and cooperates with the armature assembly (400) and the contact assembly (500) respectively.

2. The DC relay for easy assembly according to claim 1, characterized in that, The multi-interlock positioning structure includes: a first connecting cylinder (71) protruding from the base plate (210), the first connecting cylinder (71) having a through first interlocking hole (72), a second connecting cylinder (73) correspondingly protruding from the movable clamping plate (700), the second connecting cylinder (73) being inserted into the first connecting cylinder (71) and forming a stepped structure, and the middle part of the second connecting cylinder (73) having a through hole (710) communicating with the first interlocking hole (72), the two working together to form a tool leverage channel; the base plate (210) having an isolation plate (74), the isolation plate (74) having a fixed protrusion (75), the movable clamping plate (700) having a fixed protrusion (75) protruding from the base plate (210); and the movable clamping plate (700) having a fixed protrusion (75) protruding from the first connecting cylinder (71) and forming a tool leverage channel. The plate (700) is provided with a corresponding fixing hole (76), and the fixing protrusion (75) is interference-fitted with the fixing hole (76); the movable clamping plate (700) is provided with a first reinforcing post (77), the first reinforcing post (77) is provided with a second clamping part (78), the second clamping part (78) is provided with a second clamping groove (79), and the second clamping groove (79) is inserted into the isolation plate (74); the three work together to achieve a stable connection between the movable clamping plate (700) and the base plate (210), and the movable clamping plate (700) and the base plate (210) can be quickly separated by using a tool through the first insertion hole (72) and the through hole (710).

3. The DC relay for easy assembly according to claim 1, characterized in that, The coil assembly (300) includes a coil frame (301), at least two yokes (302), and an iron core (303). The bottom of the coil frame (301) is provided with a second protrusion (37) and a third protrusion (39). The base plate (210) is provided with a corresponding second limiting hole (38). The second protrusion (37) is engaged with the second limiting hole (38). The third protrusion (39) and the second protrusion (37) form a second groove (310), which is engaged with the base plate (210). The iron core (303) is mounted on the coil frame (301). The wire frame (301) has a first protrusion (30) at both ends; the wire frame (301) has a first groove (31) at both ends; the yoke (302) is fitted into the first groove (31); the yoke (302) has a second connecting hole (32); the second connecting hole (32) is inserted into the first protrusion (30); the yoke (302) has a fifth protrusion (320) on both sides; the fixed clamp (701) and the movable clamp (700) have a third limiting hole (330) respectively; the fifth protrusion (320) is inserted into the third limiting hole (330).

4. A DC relay that is easy to assemble according to claim 1, characterized in that, The armature assembly (400) includes a bracket (40) with a built-in magnet and two sets of armature plates (41). The armature plates (41) are fixed to the bracket (40) and correspond one-to-one with the yoke (302). Each set of armature plates (41) has two plates, and an movable gap is formed between the two armature plates (41) to match the thickness of the yoke (302). The armature plate (41) has a notch on the side facing the yoke (302), and the notch forms an inclined surface (44) that fits against the yoke (302). The bracket (40) has a rotating shaft (42) protruding on both sides. The fixed clamping plate (701) and the movable clamping plate (700) have corresponding rotating holes (43), and the rotating shaft (42) and the rotating hole (43) are rotatably engaged.

5. A DC relay for easy assembly according to claim 1, characterized in that, The contact assembly (500) includes a moving piece (501), a stationary piece (502), and a moving spring (503). The moving piece (501) and the moving spring (503) are fixedly connected by a positioning protrusion (57). The base plate (210) has a protruding fixed platform (51). The fixed platform (51) has a first mounting groove (52) and a second mounting groove (53). One end of the stationary piece (502) is inserted into the first mounting groove (52), and the fixed ends of the moving piece (501) and the moving spring (503) are inserted into the second mounting groove (53). The inner wall of the second mounting groove (53) is provided with a positioning groove (58). The protrusion (57) cooperates with the positioning groove (58); the push plate (600) has a sliding strip (66) protruding on both sides, the fixed clamp (701) and the movable clamp (700) have corresponding sliding grooves (65), the sliding strip (66) and the sliding groove (65) are slidably engaged; the push plate (600) has a drive groove (61) and a mounting hole (63), the bracket (40) has a linkage rod (62) protruding, the linkage rod (62) is engaged with the drive groove (61), the movable spring (503) has a "7" shaped second limiting part (64) protruding, the second limiting part (64) is engaged with the mounting hole (63).

6. A DC relay for easy assembly according to claim 1, characterized in that, The outer shell (100) has protruding positioning strips (101) on both side walls, and the base (200) has corresponding slide rails (102). The positioning strips (101) cooperate with the slide rails (102). The top of the inner wall of the outer shell (100) has a first limiting part (34) and an inverted trapezoidal first abutment part (36). The yoke (302) has a corresponding first limiting hole (35). The first limiting part (34) is inserted into the first limiting hole (35), and the first abutment part (36) abuts against the surface of the yoke (302). The outer shell (100) has a viewing... The observation window (104) is provided with an indicator plate (105) extending to the outside of the observation window (104) at the top of the transmission push plate (600); the outer shell (100) is provided with mounting frames (107) on both sides, and a magnetic blow magnet (106) is provided in the mounting frame (107). A strip groove (108) is opened on the side of the mounting frame (107) away from the outer shell (100), and an elastic locking strip (109) is formed between the strip grooves (108). The free end of the elastic locking strip (109) is provided with a locking connector, and the locking connector is limited and cooperated with the magnetic blow magnet (106).

7. A clamp for a DC relay, used to clamp the relay during assembly of a DC relay of any one of claims 1-6 that is easy to assemble; characterized in that, The system includes a base (01) with a control component, on which a clamping component (02) and a support platform (03) located on one side of the clamping component (02) are rotatably mounted. The clamping component (02) is connected to a drive unit of the control component. The clamping component (02) can clamp the base (200) of the relay and, through the drive unit, drive the base (200) to flip towards the support platform (03) and from an upright state to a horizontal state, so that the fixing plate (701) on the base (200) fits against the support platform (03).

8. The clamp for a DC relay according to claim 7, characterized in that, The base (01) is provided with a support member (07), and the clamping assembly (02) is provided on the support member (07), so that there is an movable gap between the clamping assembly (02) and the base (01); the clamping assembly (02) includes a support plate (020) adapted to the bottom plate (210) of the base (200), and the support plate (020) is provided with a first through hole (021) and a second through hole (022) corresponding to the positions of the contact assembly (500) and the coil assembly (300), respectively. The first through hole (021) is used for the static lead-out end (55) to pass through, and the second through hole (022) is used for the pin (304) to pass through; it also includes a limiting mechanism provided on both sides of the support plate (020), and the limiting mechanism is used to clamp and fix the edge of the bottom plate (210).

9. The clamp for a DC relay according to claim 8, characterized in that, The limiting mechanism includes connecting rods (023) arranged on both sides of the support plate (020) and extending outward. A locking plate (026) is slidably arranged on the connecting rod (023). An abutment spring (025) is arranged between the locking plate (026) and the connecting rod (023). The abutment spring (025) is used to drive the locking plate (026) to move towards the support plate (020). The locking plate (026) is arranged on both sides of the base plate (210), and a clamping surface (025) is provided on the top to fit against the side wall of the base plate (210). 27) Above the locking plate (026) is a pressing part (028) located at the contact assembly (500). The pressing part (028) extends horizontally towards the bottom plate (210) to the top of the bottom plate (210), forming a stepped shape between it and the locking plate (026), and is fitted to the upper surface of the bottom plate (210). Above the pressing part (028) is an arc-shaped guide surface (029). When the guide surface (029) is pressed, it can drive the locking plate (026) away from the support plate (020).

10. A clamp for a DC relay according to claim 8, characterized in that, The support plate (020) has symmetrical fixing components (08) on both sides of the bottom opposite to the second through hole (022). The fixing components (08) include a drive box (080) disposed on one side of the second through hole (022). The drive box (080) has a telescopic shaft (082) slidably disposed on one side of the second through hole (022). The end of the telescopic shaft (082) is provided with a flexible clamping block (083). A return spring (084) is disposed between the telescopic shaft (082) and the drive box (080). The return spring (084) is used to drive the flexible clamping block (083) to slide towards the second through hole (022). The flexible clamping block (083) is also provided with a square groove (085) corresponding to the position and shape of the pin (304). The square groove (085) has a chamfer on one side opposite to the support plate (020).

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