A relay that is beneficial to improving stability

Abstract

A relay that is conducive to improving stability, which includes a main housing, a sub-housing, and a main electrical connection assembly. The main housing includes a main base and a main cover. The main base is provided with a main electrical connection portion. The main electrical connection portion includes a main accommodating groove, a main shrapnel base, and a main shrapnel abutment block. The main base is provided with a plug-in slot. The main electrical connection assembly includes a main static spring assembly and an active spring assembly. The main static spring assembly includes a main static contact. A groove is provided on the main static contact. The active spring assembly includes an active spring, an active contact, and a main shrapnel. Plug-in slots and limit blocks are provided at intervals on the end face of the main base facing the sub-housing, and a plug-in block is provided on the sub-base. The two plug-in blocks are plugged and fixed corresponding to the two plug-in slots to complete the splicing of the sub-housing and the main housing.

Description

Technical Field

[0001] The present invention relates to the technical field of relays, and in particular to a relay that is beneficial to improving stability. Background Art

[0002] Most existing latching relays can only connect one electrical device at a time. Connecting multiple devices often requires installing a relay on each circuit, increasing wiring costs. Therefore, a series-connected latching relay has emerged on the market, requiring only a single relay to connect multiple circuits. As disclosed in CN201821554424.2, the multi-phase magnetic latching relay includes a base, a magnetic circuit part, a contact part and a push card; the magnetic circuit part and the contact part are respectively installed in the base, the contact part is composed of multiple groups of dynamic and static spring parts, and the dynamic and static contacts of each group of dynamic and static spring parts are in mutually coordinated positions, and the push card is connected between the dynamic spring part of the magnetic circuit part and the contact part; the magnetic circuit part includes an H-type structure armature part, the H-type structure armature part is provided with a rotating shaft, an action arm is extended outward from one side of the H-type structure, and a card column is provided at the end of the action arm for cooperating with the push card, and the axial direction of the card column is the same as the axial direction of the rotating shaft; an extension arm is extended outward from the other side of the H-type structure, a switch toggle column is provided on the extension arm, and the axial direction of the switch toggle column is the same as the axial direction of the rotating shaft.

[0003] However, adding new devices or functional modules requires a large-scale overhaul of the entire control system, such as replacing relays. This can force the scrapping of a large number of properly functioning relays, hindering cost control. Existing expandable relays simply add a set of electrical connection components during expansion, without considering whether the existing permanent magnet components will have sufficient force to maintain contact between the contacts and overcome the repulsive forces between the contacts. This can lead to reduced relay stability. Summary of the Invention

[0004] In view of this, the present invention provides a relay that is beneficial to improving stability to solve the above technical problems.

[0005] A relay that is conducive to improving stability, comprising a main housing, at least one sub-housing plugged into one side of the main housing, and a group of main electrical connection components arranged in the main housing. The main housing comprises a main base, and the main base comprises a main electrical connection portion. At least two plug-in slots are arranged at intervals on the end face of the main base facing the sub-housing, and at least two plug-in blocks are arranged at intervals on the end face of the sub-housing facing the main base. The plug-in blocks are the same in number as the plug-in slots and are plugged and fixed to each other. The main electrical connection portion comprises a main accommodating groove, a main partition plate arranged in the main accommodating groove, a main shrapnel base arranged on the main partition plate, and a main shrapnel abutment block arranged on the side wall of the main shrapnel base. The main electrical connection component comprises a main static spring assembly arranged in the main accommodating groove, and an active spring assembly with one end fixed in the main accommodating groove. The main static spring assembly includes a main static contact. The active spring assembly includes an active spring with one end fixed in the main receiving slot, at least one active contact disposed at the free end of the active spring, and a main spring disposed in the main spring base. The main spring has a U-shaped structure and includes two main abutting walls and a main curved surface connecting the two main abutting walls. One main abutting wall of the main spring abuts against the active spring, while the other main abutting wall is located between the main spring base and the main spring abutting block. The maximum length of the main spring, along a direction perpendicular to the spring force of the two main abutting walls, is less than the maximum distance between the main spring base and the main spring abutting block. The main curved surface is positioned toward the main spring base. When the active contact and the main static contact are disengaged, the main spring is compressed, the two main abutting walls of the main spring close together, forming an acute angle between the two main abutting walls, and the main curved surface abuts against the main spring base. When the active contact and the main static contact are in contact and energized, the two main abutting walls of the main elastic sheet are opened, and there is an obtuse angle between the two main abutting walls and the ends of the main abutting walls abut against the main elastic sheet abutting block.

[0006] Furthermore, the main shrapnel base has an arc-shaped outline.

[0007] Furthermore, the main shell is also provided with a coil assembly, a magnetic steel assembly arranged on one side of the coil assembly, and a dial plate with one end connected to the magnetic steel assembly.

[0008] Furthermore, the paddle plate includes a paddle plate body, a swing arm slot arranged on one end of the paddle plate body, two paddle slots spaced apart at both ends of the paddle plate body, and an avoidance opening arranged between the two paddle slots.

[0009] Furthermore, a main cover plate is provided on the upper cover of the main base, a coil mounting portion is provided near one side of the main base, a magnetic steel mounting portion is provided on one side of the coil mounting portion, and a main sliding groove is provided on one side of the magnetic steel mounting portion and the main electrical connection portion, and the main electrical connection portion is provided on one side of the magnetic steel mounting portion.

[0010] Furthermore, the secondary shell includes a secondary base and a secondary cover plate arranged on the secondary base, a secondary extension portion is provided in the secondary base, and the secondary extension portion includes a secondary accommodating groove, a secondary shrapnel base arranged on the side of the secondary accommodating groove close to the main shell, and a secondary shrapnel slot arranged on the side wall of the secondary shrapnel base.

[0011] Furthermore, the auxiliary housing accommodates an auxiliary electrical connection assembly, which includes an auxiliary static spring assembly fixedly arranged on the side wall of the auxiliary accommodating groove, and an auxiliary dynamic spring assembly with one end fixedly arranged in the auxiliary accommodating groove.

[0012] Furthermore, the auxiliary static spring assembly includes an auxiliary static spring piece and at least one auxiliary static contact point arranged on the auxiliary static spring piece.

[0013] Furthermore, the auxiliary spring assembly includes an auxiliary spring, at least one auxiliary contact arranged on the free end of the auxiliary spring, and an auxiliary spring arranged in the auxiliary spring base.

[0014] Furthermore, a groove is provided on the main static contact, and the two side walls of the groove are inclined outward and are arc-shaped; the end face of the active contact is a spherical surface, and when the active contact abuts against the main static contact, the contact between the active contact and the main static contact expands from single-point contact to multi-point contact.

[0015] Compared to the prior art, the present invention provides a relay that improves stability by providing two insertion slots spaced apart on the end face of the main base facing the secondary housing, and two stoppers disposed on the insertion slots near the ends of the main cover plate. A secondary sliding slot is provided on the side of the secondary base near the main sliding slot. The secondary sliding slot is connected to the main sliding slot, allowing the dial plate to simultaneously connect to the main electrical connection portion and the secondary extension portion. Two insertion blocks are spaced apart on the end face of the secondary base facing the main base. The two insertion blocks are plugged and fixed into the corresponding two insertion slots until one end of the insertion block contacts the stopper, completing the splicing of the secondary housing and the main housing, making expansion easier. A main spring clip and a secondary spring clip are provided on the main and secondary housing slots, respectively, to reduce the thrust required by the permanent magnet when the contacts are closed, thereby ensuring better contact stability between the contacts of the relay after modular expansion. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic structural diagram of a relay provided by the present invention that is beneficial to improving stability.

[0017] Figure 2 for Figure 1 Schematic diagram of the internal structure of a relay that helps improve stability.

[0018] Figure 3 for Figure 2 A schematic diagram of the structure of a main base of a relay that is conducive to improving stability.

[0019] Figure 4 for Figure 2 A schematic diagram of the structure of a secondary base of a relay that is beneficial to improving stability.

[0020] Figure 5 for Figure 2 A schematic diagram of the structure of a dial plate of a relay that is beneficial to improving stability.

[0021] Figure 6 for Figure 2 Schematic diagram of the structure of the main static contacts of a relay which is conducive to improving stability.

[0022] Figure 7 for Figure 2 A schematic diagram of the structure of active contacts of a relay which is beneficial to improving stability.

[0023] Figure 8 for Figure 2 Schematic diagram of the structure of the main shrapnel of the main electrical connection component.

[0024] Figure 9 for Figure 2 A schematic structural diagram of the auxiliary spring piece of the auxiliary electrical connection component.

[0025] Figure 10 for Figure 2 A schematic structural diagram of a relay from another perspective that is beneficial to improving stability.

[0026] Reference numerals: main housing 10, main base 11, main cover 12, coil mounting portion 13, magnetic steel mounting portion 14, main electrical connection portion 15, main accommodating groove 151, main partition 152, main spring base 153, main spring abutting block 154, main sliding groove 16, plug-in slot 17, limit block 18, auxiliary housing 20, auxiliary base 21, auxiliary cover 22, auxiliary extension portion 23, auxiliary accommodating groove 231, auxiliary spring base 232, auxiliary spring slot 233, auxiliary sliding groove 24, plug-in block 25, coil assembly 30, coil skeleton 31, electromagnetic coil 32, magnetic steel assembly 40, permanent Magnet 41, swing arm 42, paddle 50, paddle body 51, swing arm slot 52, paddle slot 53, avoidance opening 54, main electrical connection assembly 60, main static spring assembly 61, main static spring piece 611, main static contact 612, groove 613, active spring assembly 62, active spring piece 621, active contact 622, main spring piece 623, main abutting wall 6231, main arc surface 6232, auxiliary electrical connection assembly 70, auxiliary static spring assembly 71, auxiliary movable spring assembly 72, auxiliary movable spring piece 721, auxiliary movable contact 722, auxiliary spring piece 723, auxiliary abutting wall 7231, auxiliary arc surface 7232. DETAILED DESCRIPTION

[0027] The following is a further detailed description of specific embodiments of the present invention. It should be understood that the description of the embodiments of the present invention herein is not intended to limit the scope of protection of the present invention.

[0028] like Figures 1 to 10 , which is a schematic structural diagram of a relay that is conducive to improving stability provided by the present invention. The relay that is conducive to improving stability includes a main housing 10, at least one auxiliary housing 20 plugged into one side of the main housing 10, a coil assembly 30 disposed in the main housing 10, a magnetic steel assembly 40 disposed on one side of the coil assembly 30, a paddle 50 connected to the magnetic steel assembly 40 at one end, a set of main electrical connection components 60 disposed on the side of the main housing 10 away from the coil assembly 30, and a set of auxiliary electrical connection components 70 disposed in the auxiliary housing 20. It is conceivable that the relay that is conducive to improving stability also includes other functional structures, such as connection terminals, baffles, etc., which are well known to those skilled in the art and will not be described in detail here.

[0029] The main housing 10 includes a main base 11 and a main cover 12 covering the main base 11. The main base 11 and the main cover 12 are interlocked for protection. The main base 11 is provided with a coil mounting portion 13 near one side, a magnetic steel mounting portion 14 provided on one side of the coil mounting portion 13, a main electrical connection portion 15 provided on one side of the magnetic steel mounting portion 14, and a main sliding groove 16 provided on one side of the magnetic steel mounting portion 14 and the main electrical connection portion 15. The coil mounting portion 13 is used to mount the coil assembly 30, the magnetic steel mounting portion 14 is used to mount the magnetic steel assembly 40, and the main electrical connection portion 15 is used for the main electrical connection assembly 60. The main sliding groove 16 is used to accommodate the shift plate 50 and provide a range of motion, and connect the magnetic steel mounting portion 14 and the main electrical connection portion 15. The end of the main sliding groove 16 facing the auxiliary housing 20 is open. Since the coil assembly 30 and the magnetic steel assembly 40 are existing technologies, the structure and shape parameters of the coil mounting portion 13 and the magnetic steel mounting portion 14 can be set according to actual needs and will not be repeated here.

[0030] The main electrical connection portion 15 includes a main accommodating groove 151 , a main partition 152 disposed in the main accommodating groove 151 , a main elastic clip base 153 disposed on the main partition 152 , and a main elastic clip abutting block 154 disposed on the side wall of the main elastic clip base 153 .

[0031] The main receiving groove 151 is used to accommodate the main electrical connection assembly 60. The length of the main receiving groove 151 is greater than the length of the main electrical connection assembly 60. A fixing groove 155 is provided at one end of the main receiving groove 151 away from the main sliding groove 16. The fixing groove 155 is used to embed and fix the main electrical connection assembly 60, providing a fulcrum for the main electrical connection assembly 60 so that its other end can be used in conjunction with the shift plate 50. The main partition 152 is used to separate the main receiving groove 151 from the coil assembly 30 and the magnetic steel assembly 40, preventing the main electrical connection assembly 60 from affecting the coil assembly 30 and the magnetic steel assembly 40 after being energized.

[0032] The main spring base 153 is designed to be arc-shaped so as to better fit the spring described below, which will be described below in conjunction with the main electrical connection assembly 60 .

[0033] The main spring base 153 has an arcuate profile to better conform to the curved surface of the spring described below. The central angle of the main spring base 153 is greater than 70 degrees and less than 90 degrees. In this embodiment, the central angle of the main spring base 153 is 78 degrees. This is determined by the structure and operating principle of the main spring 623, which will be described in detail below.

[0034] The main elastic piece abutting block 154 and the main elastic piece base 153 are disposed on the same side wall of the main accommodating groove 151 , and cooperate with the main elastic piece base 153 to limit the range of movement of the elastic piece.

[0035] Two insertion slots 17 are spaced apart on the end surface of the main base 11 facing the secondary housing 20, along with two stoppers 18 positioned on the side of each insertion slot 17 near the main cover 12. The insertion slots 17 are used to connect to the secondary housing 20, and the stoppers 18 prevent the secondary housing 20 from misaligning when inserted into the insertion slots 17. Both insertion slots 17 are T-shaped, providing four-way fixation. Once the secondary housing 20 is inserted and secured to the insertion slots 17, it can only move in the direction of insertion of the insertion slot 17.

[0036] The limiting block 18 is provided at one end of the two plug-in slots 17 close to the opening of the main electrical connection portion 15 for rapid positioning during plug-in assembly.

[0037] The auxiliary housing 20 includes a auxiliary base 21 and an auxiliary cover 22 covering the auxiliary base 21. The auxiliary base 21 and the auxiliary cover 22 are buckled with each other to play a protective role.

[0038] The secondary base 21 is provided with a secondary extension portion 23. The structure of the secondary extension portion 23 is identical to that of the primary electrical connection portion 15, comprising a secondary accommodating groove 231, a secondary spring base 232, and a secondary spring slot 233. The secondary accommodating groove 231 is used to accommodate the secondary electrical connection assembly 70. Since the structure of the secondary extension portion 23 is identical to that of the primary electrical connection portion 15, a detailed description thereof will not be given.

[0039] A secondary sliding groove 24 is provided on one side of the secondary extension portion 23 close to the main sliding groove 16 . The secondary sliding groove 24 is connected to the main sliding groove 16 , so that the shift plate 50 can be connected to the main electrical connection portion 15 and the secondary extension portion 23 at the same time.

[0040] Two plug-in blocks 25 are spaced apart on the side end surface of the secondary housing 20 facing the main base 11. The two plug-in blocks 25 are disposed on the secondary base 21, and the number of the plug-in blocks 25 is the same as the number of the plug-in slots 17, so that each plug-in block 25 can correspond to each plug-in slot 17. The outer contours of the two plug-in blocks 25 are the same as the inner contours of the plug-in slots 17, and the height dimensions are also the same. The two plug-in blocks 25 are plugged into and fixed to the corresponding two plug-in slots 17 until one end of the plug-in block 25 contacts the limit block 18, thereby completing the splicing of the secondary housing 20 and the main housing 10. It is conceivable that the plug-in slot 17 can also be provided on the end surface of the secondary base 21 facing away from the main base 11, thereby further increasing expandability. Preferably, the plug-in blocks 25 and the plug-in slots 17 are designed to form a tight fit in terms of size, so that after assembly, no additional fixings are required to secure the secondary housing 20.

[0041] The coil assembly 30 includes a coil bobbin 31 mounted within the coil mounting portion 13 and an electromagnetic coil 32 wound around the coil bobbin 31. When energized, the electromagnetic coil 32 generates an S-pole and a N-pole at its ends, interacting with the magnetic steel assembly 40 to drive its reciprocating oscillation. The coil assembly 30 itself is conventional and will not be described in detail here.

[0042] The magnetic assembly 40 includes a permanent magnet 41 rotatably mounted within the magnetic mounting portion 14, and a swing arm 42 positioned toward the selector plate 50. The permanent magnet 41 has fixed south and north poles at either end. When the electromagnetic coil 32 is energized, the operator can adjust the direction of the current as needed, thereby changing the direction of the magnetic poles (i.e., south and north poles) at the ends of the electromagnetic coil 32. This creates an attraction or repulsion effect with the south and north poles of the permanent magnet 41 itself, driving the permanent magnet 41 to swing. When the permanent magnet 41 swings, it drives the swing arm 42 to swing along with it, thereby driving the selector plate 50 to reciprocate along the primary sliding slot 16 and the secondary sliding slot 24, thereby turning the relay on and off. The magnetic assembly 40 itself is conventional technology and will not be described in detail here.

[0043] See also Figure 5 The paddle plate 50 includes a paddle plate body 51 inserted into the main sliding groove 16, a swing arm slot 52 set on one end of the paddle plate body 51, two paddle slots 53 set at intervals at both ends of the paddle plate body 51, and an avoidance opening 54 set between the two paddle slots 53.

[0044] The swing arm slot 52 engages with the swing arm 42, enabling the permanent magnet 41 to drive the paddle body 51 to slide. The two paddle slots 53 are respectively used to engage the primary electrical connection assembly 60 and the secondary electrical connection assembly 70. As the number of secondary electrical connection assemblies 70 increases, the number of paddle slots 53 also increases accordingly. The relief opening 54 reduces the weight of the paddle body 51, minimizing the contact area with the primary sliding groove 16 and the secondary sliding groove 24, and reducing frictional resistance, thereby reducing the force required by the permanent magnet 41 to drive the paddle body 51.

[0045] The main electrical connection assembly 60 includes a main static spring assembly 61 disposed in the main receiving groove 151 , and an active spring assembly 62 with one end fixedly disposed in the main receiving groove 151 .

[0046] The main static spring assembly 61 includes a main static spring piece 611 fixed at one end on the side wall of the main accommodating groove 151, and at least one main static contact 612 provided on the main static spring piece 611. One end of the main static spring piece 611 extends to the outside of the main base 11 to connect to external devices. Figure 6 A groove 613 is provided on the main static contact 612 , and the two side walls of the groove 613 are inclined outward and are arc-shaped to increase the contact area with the main static contact 612 .

[0047] The active spring assembly 62 includes an active spring 621 with one end fixed in the main accommodating groove 151 , at least one active contact 622 disposed on the free end of the active spring 621 , and a main spring 623 disposed in the main spring base 153 .

[0048] One end of the active spring 621 is fixed in the fixed slot 155 , and the other end is engaged in the paddle slot 53 . As the paddle plate 50 slides, the active spring 621 itself is elastically deformed.

[0049] See also Figure 7 The end surface of the active contact 622 is spherical. When the active contact 622 abuts the main static contact 612, the contact between the active contact 622 and the main static contact 612 expands from a single point to multiple points, thereby making the abutment between the active contact 622 and the main static contact 612 more stable. The free end of the active reed 621 is engaged in the paddle slot 53. The main static contacts 612 and the active contacts 622 have the same number to ensure mutual abutment.

[0050] The spring force of the main spring clip 623 is aligned with the arrangement of the active contact 622 and the main static contact 612, providing additional thrust to the engagement between the active contact 622 and the main static contact 612. Because the magnetic latching relay is an expandable structure, when multiple secondary electrical connection assemblies 70 are loaded, the thrust provided by the paddle 50 may be insufficient, resulting in a loose connection between the active contact 622 and the main static contact 612. Therefore, the main spring clip 623 is required to provide sufficient holding force.

[0051] One end of the main elastic piece 623 is placed toward the active contact 622, and the other end is accommodated between the main elastic piece base 153 and the main elastic piece abutting block 154. The main elastic piece 623 is a U-shaped structure and includes two main abutting walls 6231 and a main arc surface 6232 connecting the two main abutting walls 6231. Figure 10 The main arc surface 6232 is placed toward the main elastic plate base 153. One main abutting wall 6231 of the main elastic plate 623 abuts against the active spring 621, and the other main abutting wall 6231 is accommodated between the main elastic plate base 153 and the main elastic plate abutting block 154.

[0052] Along the elastic direction perpendicular to the two main abutting walls 6231 , the maximum length of the main elastic piece 623 is smaller than the maximum distance between the main elastic piece base 153 and the main elastic piece abutting block 154 , thereby enabling the main abutting wall 6231 to move within a limited range.

[0053] To extend the life of the main elastic member 623, the main elastic member 623 is movable rather than fixed. If the main elastic member 623 were fixed, the two main abutting walls 6231 would bend and deform around a baseline, thereby shortening the life of the main elastic member 623. Therefore, the main elastic member 623 cannot be fixed and is movable within a limited range.

[0054] When the active contact 622 and the main static contact 612 are disengaged, the main elastic piece 623 is compressed, the two main abutting walls 6231 of the main elastic piece 623 are closed, and there is an acute angle between the two main abutting walls 6231. At this time, the main elastic piece 623 will become longer in the elastic direction perpendicular to the two main abutting walls 6231 and will slide toward the main elastic piece base 153. At this time, the main arc surface 6232 is placed on the main elastic piece base 153.

[0055] When the active contact 622 and the main static contact 612 are in contact and energized, the two main abutting walls 6231 of the main elastic clip 623 open, forming an obtuse angle between the two main abutting walls 6231. At this point, the main elastic clip 623 shortens in a direction perpendicular to the elastic force of the two main abutting walls 6231. Simultaneously, due to its own elastic potential energy, the main elastic clip 623 moves away from the main elastic clip base 153. At this point, the ends of the main abutting walls 6231 abut against the main elastic clip abutting block 154, allowing the main elastic clip 623 to move back and forth between the main elastic clip base 153 and the main elastic clip abutting block 154. Furthermore, when the main abutting walls 6231 abut against the active contact 622, the stability of the active contact 622 and the main static contact 612 after contact is increased, and the arc repelling capability is enhanced.

[0056] The secondary electrical connection assembly 70 includes a secondary static spring assembly 71 fixedly disposed on the side wall of the secondary accommodating groove 231 , and a secondary dynamic spring assembly 72 with one end fixedly disposed in the secondary accommodating groove 231 .

[0057] The auxiliary static spring assembly 71 includes an auxiliary static spring piece 711, one end of which is fixedly mounted on the side wall of the auxiliary accommodating groove 231, and at least one auxiliary static contact 712 disposed on the auxiliary static spring piece 711. Preferably, the structure of the auxiliary static spring assembly 71 is the same as that of the main static spring assembly 61, facilitating assembly and replacement.

[0058] The auxiliary spring assembly 72 has the same structure as the active spring assembly 62 and achieves the same technical effects as the active spring assembly 62. It includes an auxiliary spring piece 721, an auxiliary contact 722, and an auxiliary spring piece 723. Preferably, the auxiliary spring piece 723 has the same structure as the main spring piece 623, including two auxiliary abutment walls 7231 and an auxiliary arc surface 7232 connecting the two auxiliary abutment walls 7231.

[0059] The free end of the auxiliary moving reed 721 is engaged in the paddle slot 53. The structure of the auxiliary static contact 712 is identical to that of the main static contact 612, and the auxiliary moving contact 722 is identical to the active contact 622 to save costs.

[0060] During use, the two plug-in blocks 25 are inserted into the plug-in slots 17, the auxiliary spring 721 is then snapped into the paddle slot 53, and the main cover 12 and auxiliary cover 22 are closed to complete the expansion. The main spring 623 and auxiliary spring 723 provide a boost, thereby reducing the force required by the permanent magnet 41 to drive the paddle 50 to directly engage the contacts, ensuring that the permanent magnet 41 still has sufficient thrust after expansion.

[0061] Compared with the prior art, the present invention provides a relay that is conducive to improving stability by providing two plug-in slots 17 spaced apart on the end face of the main base 11 facing the auxiliary housing 20, and two limit blocks 18 provided on the plug-in slots 17 near the end of the main cover 12. A secondary sliding slot 24 is provided on the side of the auxiliary base 21 near the main sliding slot 16. The secondary sliding slot 24 is connected to the main sliding slot 16, so that the dial plate 50 can simultaneously connect to the main electrical connection part 15 and the secondary extension part 23. Two plug-in blocks 25 are spaced apart on the end face of the auxiliary base 21 facing the main base 11. The two plug-in blocks 25 are plugged and fixed corresponding to the two plug-in slots 17 until one end of the plug-in block 25 contacts the limit block 18, thereby completing the splicing of the auxiliary housing 20 and the main housing 10, and convenient expansion. A main spring piece 623 and a secondary spring piece 723 are respectively provided on the main accommodating groove 151 and the secondary accommodating groove 231 to reduce the thrust requirement on the permanent magnet 41 when the contacts are closed, so that the contacts of the relay have better connection stability after modular expansion.

[0062] The above are only preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Any modifications, equivalent replacements or improvements within the spirit of the present invention are included in the scope of the claims of the present invention.

Claims

1. A relay that is conducive to improving stability, characterized by: The relay that is conducive to improving stability includes a main housing, at least one auxiliary housing plugged into one side of the main housing, and a group of main electrical connection components arranged in the main housing, the main housing includes a main base, the main base includes a main electrical connection part, two plug-in slots are arranged at intervals on the end face of the main base facing the auxiliary housing, and two plug-in blocks are arranged at intervals on the end face of the auxiliary housing facing the main base, the plug-in blocks are the same in number as the plug-in slots and are plugged and fixed to each other, the main electrical connection part includes a main accommodating groove, a main partition plate arranged in the main accommodating groove, a main elastic clip base arranged on the main partition plate, and a main elastic clip abutting block arranged on the side wall of the main elastic clip base, the main electrical connection component includes a main static spring assembly arranged in the main accommodating groove, and an active spring assembly with one end fixed in the main accommodating groove, the main static spring assembly includes a main static contact, the active spring assembly includes an active spring with one end fixed in the main accommodating groove, at least one arranged in the The active contact on the free end of the active spring, and a main spring arranged in the base of the main spring, the main spring is a U-shaped structure and includes two main abutting walls, and a main arc surface connecting the two main abutting walls, one main abutting wall of the main spring abuts on the active spring, and the other main abutting wall is accommodated between the base of the main spring and the abutting block of the main spring, along the elastic force direction perpendicular to the two main abutting walls, the maximum length of the main spring is less than the maximum length between the base of the main spring and the abutting block of the main spring. The main arc surface is placed toward the main spring clip base. When the active contact and the main static contact are disengaged, the main spring clip is compressed, and the two main abutting walls of the main spring clip are closed, and there is an acute angle between the two main abutting walls, and the main arc surface abuts against the main spring clip base. When the active contact and the main static contact are energized, the two main abutting walls of the main spring clip are opened, and there is an obtuse angle between the two main abutting walls, and the end of the main abutting wall abuts against the main spring clip abutment block.

2. The relay for improving stability according to claim 1, wherein: The outline of the main shrapnel base is arc-shaped.

3. The relay for improving stability according to claim 1, wherein: The main housing is also provided with a coil assembly, a magnetic steel assembly arranged on one side of the coil assembly, and a dial plate with one end connected to the magnetic steel assembly.

4. The relay for improving stability according to claim 3, wherein: The paddle plate includes a paddle plate body, a swing arm slot arranged on one end of the paddle plate body, two paddle slots spaced apart at both ends of the paddle plate body, and an avoidance opening arranged between the two paddle slots.

5. The relay for improving stability according to claim 1, wherein: The main base upper cover is provided with a main cover plate, and a coil mounting portion is provided near one side of the main base, a magnetic steel mounting portion is provided on one side of the coil mounting portion, and a main sliding groove is provided on one side of the magnetic steel mounting portion and the main electrical connection portion, and the main electrical connection portion is provided on one side of the magnetic steel mounting portion.

6. The relay for improving stability according to claim 1, wherein: The secondary shell includes a secondary base and a secondary cover plate arranged on the secondary base. A secondary extension part is provided in the secondary base. The secondary extension part includes a secondary accommodating groove, a secondary elastic clip base arranged on the side of the secondary accommodating groove close to the main shell, and a secondary elastic clip slot arranged on the side wall of the secondary elastic clip base.

7. The relay for improving stability according to claim 6, wherein: The auxiliary housing contains an auxiliary electrical connection assembly, which includes an auxiliary static spring assembly fixedly arranged on the side wall of the auxiliary accommodating groove, and an auxiliary dynamic spring assembly with one end fixedly arranged in the auxiliary accommodating groove.

8. The relay for improving stability according to claim 7, wherein: The auxiliary static spring assembly includes an auxiliary static spring piece and at least one auxiliary static contact point arranged on the auxiliary static spring piece.

9. The relay for improving stability according to claim 7, wherein: The auxiliary spring assembly includes an auxiliary spring, at least one auxiliary contact arranged on the free end of the auxiliary spring, and an auxiliary spring arranged in the auxiliary spring base.

10. The relay for improving stability according to claim 1, wherein: A groove is provided on the main static contact, and the two side walls of the groove are inclined outward and are arc-shaped; the end face of the active contact is a spherical surface, and when the active contact abuts against the main static contact, the contact between the active contact and the main static contact expands from a single point contact to a multi-point contact.

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