Pushing card and moving spring leaf cooperation structure of horizontal relay

Abstract

The application discloses a push card and moving spring sheet cooperation structure of a horizontal relay, which comprises a push card assembled between both ends of a coil frame and a moving spring sheet assembled at one end of the coil frame; a contact area of the moving spring sheet is divided into a contact part and a pushing part which are relatively independent and cooperate by two separation grooves, and the pushing part is provided with a pushing slot; both sides of a moving spring cooperation end of the push card are respectively provided with an outward protruding allowance boss, and the allowance boss is provided with an outward protruding pushing cone; in the application structure of the relay, the moving spring sheet is connected with the pushing cones on both sides of the push card through the pushing slots on both sides of the pushing part, and in the release and static state of the moving spring sheet, the contact part is located between the pushing cones on both sides of the push card and keeps gap cooperation with the moving spring cooperation end of the push card. The application can effectively avoid the arc burning technical problem caused by the secondary contact of the contact.

Description

Technical Field

[0001] This invention relates to relays, specifically a cooperative structure between a push card and a moving spring in a horizontal relay. Background Technology

[0002] A horizontal relay is a common type of miniaturized relay structure. It has a contact assembly structure at one end of the coil frame and an armature assembly structure at the other end. The contact assembly structure is used to assemble moving and stationary springs, etc. The armature assembly structure is used to assemble the armature, etc. Push clips are arranged along the length of both ends of the coil frame on the outer side of the coil, forming a vertically corresponding fit with the base surrounding the coil frame. One end of the push clip engages with the push hole on the moving spring through a protruding push cone, and the other end engages with the armature through an armature slot; that is, the push clip is assembled between the moving spring and the armature at both ends of the coil frame. Examples include technologies disclosed in Chinese patent documents such as "An Electromagnetic Relay with Improved Contact Breaking Capacity" (Publication No. CN 215377340 U, ​​Publication Date December 31, 2021) and "A Push Clip Assembly Structure for a Horizontal Relay" (Publication No. CN 112992610 A, Publication Date June 18, 2021).

[0003] To miniaturize the structure of horizontal relays, achieve low power output, and adapt the elasticity of the moving spring to the design attraction force of the magnetic circuit of the horizontal relay, a partition groove is typically used to divide the contact area of ​​the moving spring into a relatively independently cooperating contact section and push sections located on both sides of the contact section. The contact section serves to connect the moving contact. The push sections serve to provide push slots for cooperating with the push card. In this way, the rigidity of the moving spring is reduced in exchange for its high elasticity, and the reaction force of the moving spring acting on the push card is reduced. For details, please refer to the moving spring structure disclosed in the above-mentioned publications CN 215377340 U and CN112992610 A.

[0004] However, the aforementioned design of the moving reed introduces significant arc-ignition problems. This is because: The integrity between the contact part and the pushing part under the partition groove is maintained only by the moving spring in the area below the moving contact, resulting in poor linkage between the contact part and the pushing part and high elasticity. Furthermore, the pushing end of the moving spring of the push card is basically a planar structure. During the release process, the pushing parts on both sides of the moving spring and the contact part in the middle basically collide with the same plane of the push card. The pushing end of the moving spring of the push card can only achieve single-stage collision buffering and energy absorption for the entire moving spring head. This single-stage buffering and energy absorption obviously cannot effectively unload the elastic potential energy of the highly elastic moving spring. That is, the buffering and energy absorption effect on the moving spring is limited, which easily causes the moving spring head to rebound and move towards the stationary spring. This can easily lead to a secondary connection between the rebounding contact part and the stationary contact that is not technically required.

[0005] This not only affects the reliability of relay on / off control, but also, because an electric arc is generated when the moving and stationary contacts open after a certain voltage and current are applied to the relay load terminal, the high temperature and energy of the arc cause the moving and stationary contacts to melt—that is, to erode—directly aggravating the erosion of the moving and stationary contact surfaces. As the number of switching between the moving and stationary contacts increases, the degree of erosion on the surface of the moving and stationary contacts becomes more and more obvious, and the moving and stationary contacts are prone to adhesion failure, directly affecting the service life of the horizontal relay. Summary of the Invention

[0006] The technical objective of this invention is to provide a push card and moving spring cooperation structure that can buffer and absorb the elastic force of the moving spring, reduce rebound, and effectively prevent secondary contact of the contacts, without affecting the elasticity of the moving spring structure, in view of the special characteristics of the above-mentioned horizontal relay and the moving spring used, as well as the shortcomings of the prior art.

[0007] The technical objective of this invention is achieved through the following technical solution: a horizontal relay push card and moving spring cooperation structure, comprising: A push clip fitted between the two ends of the coil frame; A movable spring is mounted at one end of the coil frame; The contact area of ​​the moving spring is divided into a relatively independent contact portion and a pushing portion on both sides of the contact portion by two dividing grooves. The pushing portion has a pushing slot that cooperates with the pushing card. Both sides of the push-locking spring mating end have outwardly protruding relief bosses, and the relief bosses have outwardly protruding push cones used to mate with the moving spring. The vertical surface of the relief boss at the root of the push cone is the push end face used to mate with the moving spring. In the application structure of the relay, the moving spring is connected to the pushing cones on both sides of the pushing card moving spring mating end through the pushing slots on the pushing parts on both sides; when the moving spring is released and stationary, the contact part is located in the area between the pushing cones on both sides of the pushing card, and maintains a gap fit with the pushing card moving spring mating end.

[0008] The above-mentioned technical measures are designed for horizontal relays and the special characteristics of the movable springs in the partition structure. Without affecting the elasticity of the movable spring structure, the longitudinal space of the middle area between the two movable spring mating ends is increased by forming outwardly protruding relief bosses on both sides of the movable spring mating end of the push card.

[0009] Based on the above structure, during the release process of the moving spring, the pushing parts on both sides first collide with the clearance protrusions on both sides of the push plate, while the contact part between the two pushing parts then collides with the corresponding end face of the push plate. Thus, the initial collision of the pushing parts with the clearance protrusions achieves the first stage of buffer energy absorption, initially reducing the swing amplitude of the entire moving spring head. The middle contact part, which continues to swing and travel within the depth area between the clearance protrusions, collides with the corresponding end face of the push plate after the two pushing parts, achieving the second stage of buffer energy absorption, further reducing the swing amplitude of the entire moving spring head. Through these two stages of buffer energy absorption, the swing amplitude of the entire moving spring head is significantly reduced, effectively mitigating the rebound of the moving spring head, thereby helping to avoid the arcing technical problem caused by secondary contact reconnection.

[0010] Therefore, the above-mentioned technical measures are beneficial in two ways: firstly, to improving the reliability of the on / off control of horizontal relays; and secondly, to extending the service life of horizontal relays.

[0011] As one of the preferred solutions, there is a convex buffer boss between the two relief bosses on both sides of the push-lock spring mating end, and the convex height of the buffer boss is less than the convex height of the relief boss. In the application structure of the relay, the released and rebounding moving spring contacts the buffer boss through the contact portion; when the moving spring is released and stationary, the contact portion maintains a clearance fit with the mating end of the push-locking spring, including the buffer boss.

[0012] The above-mentioned technical measures provide a second-stage buffer and energy absorption for the middle contact part, which continues to swing and move in the depth area between the two side relief bosses, by using the buffer boss to reduce the rebound of the moving spring head. At the same time, it effectively reduces the collision contact area between the middle contact part and the end face of the push card, thereby helping to reduce the scratching of the push card by the contact part of the moving spring, and thus effectively reducing the generation of lint between the push card and the contact part of the moving spring, with good anti-lint effect.

[0013] Furthermore, in the application structure of the relay, the top of the contact portion of the moving spring is lower than the top edge of the buffer boss; The released, rebounding spring contacts the buffer boss through the top of the contact portion.

[0014] The above-mentioned technical measures, through the buffer boss, provide collision support for the swing tail of the contact point that continues to swing and move in the longitudinal area between the two side relief bosses, and the second-stage buffer energy absorption effect is better.

[0015] Furthermore, the position of the buffer boss at the mating end of the push-locking spring is higher than the position of the clearance boss at the mating end of the push-locking spring. The top surface of the relief boss and the top surface of the push card are fitted together by a stepped structure; In the application structure of the relay, the top of the pushing part of the moving spring is higher than the top surface of the relief boss and lower than the top surface of the pushing card.

[0016] The above-mentioned technical measures enable the top of the pusher to be completely displaced from the moving spring mating end of the pusher card. That is, the top of the pusher of the moving spring is suspended at the moving spring mating end of the pusher card (i.e., the top side of the displacement boss), thereby effectively avoiding the scraping between the top of the pusher and the moving spring mating end of the pusher card during the engagement and release of the moving spring, reducing or even avoiding the generation of lint, and providing a good lint-proof effect.

[0017] As one of the preferred solutions, the pushing end face on the yielding boss is composed of a vertical section plane one on the upper side of the pushing cone and a vertical section plane two on the lower side of the pushing cone; Furthermore, the convex height of the second vertical segment plane is greater than the convex height of the first vertical segment plane.

[0018] The aforementioned technical measures, on the one hand, ensure that the moving spring in the released state is arranged at a certain angle on the pushing end face of the pusher card under the action of elastic force, effectively ensuring that the release gap between the moving and stationary contacts is qualified.

[0019] The above-mentioned technical measures, in two aspects, enable the push point to change from the upper side of the push cone to the lower side during the process of pushing the moving spring, and increase the pushing stroke of the moving spring, so as to effectively track the moving contact, ensure reliable engagement between the moving and stationary contacts, and also help improve the electrical life of the relay.

[0020] As a preferred embodiment, the forming depth of the dividing groove on the moving spring from the top of the moving spring is greater than the distance between the contact hole on the contact portion and the top of the moving spring. This technical measure provides a flexible moving spring structure, which is beneficial for miniaturizing and reducing the power of horizontal relays.

[0021] As one of the preferred embodiments, the width of the pushing part of the movable spring is greater than the width of the pushing end face of the relief boss; The push slot on the push part is formed with a recessed notch structure on the outer vertical side of the push part; In the application structure of the relay, the pushing part extends from the pushing end face of the relief boss in the area near the partition groove.

[0022] The above-mentioned technical measures are beneficial in three ways: firstly, they help to ensure the structural strength of the moving spring pusher; secondly, they ensure that the contact part and the moving spring mating end of the pusher card maintain a clearance fit and do not come into contact (note that the moving spring is in a released and stationary state at this time); and thirdly, during the release process of the moving spring, they help to reduce the impact force between the pusher and the pusher end face, and absorb and buffer the spring force of the rebounding pusher.

[0023] Furthermore, in the application structure of the relay, when the moving spring is in a released and stationary state, the pushing cone on the clearance boss and the pushing slot on the pushing part are engaged with a circumferential clearance. This technical measure does not eliminate the insertion and engagement structure between the pushing cone of the push card and the corresponding moving spring slot on the moving spring. Under the elastic pushing action of the moving spring, the push card is allowed to generate a slight bounce within the circumferential clearance. This slight bounce is constrained and eliminated when the pushing cone of the push card momentarily contacts the corresponding moving spring slot, but it will absorb and buffer the elastic force of the rebounding pushing part to a certain extent; at the same time, it also helps to reduce the burrs at the engagement point between the pushing cone and the pushing part.

[0024] As one of the preferred solutions, the push card is configured to cooperate with the base side panels on both sides of the coil frame through the side skirts; Furthermore, at least one support slide is provided between the skirt panel and the surrounding panel at each corresponding mating point, and under the support of the support slide, the bottom edge of the skirt panel and the top edge of the surrounding panel are fitted with a clearance.

[0025] The above-mentioned technical measures, on the one hand, work with the armature to reliably support the push card, ensuring a stable non-contact circumferential clearance fit between the push card's push cone and the corresponding moving spring slot on the moving spring push part; on the other hand, they effectively reduce the contact friction area between the push card and the base, reducing the resistance of the base to the reciprocating motion of the push card, ensuring smooth reciprocating motion of the push card, and facilitating the miniaturization of relay power; and on the other hand, they help reduce plastic lint generated by contact friction between the push card and the base mating structure.

[0026] Furthermore, each corresponding mating point has a supporting slide between the skirt panel and the surrounding panel. This technical measure achieves good support while effectively reducing the contact friction area.

[0027] Furthermore, the supporting surface of the support slide is an outwardly convex arc-shaped structure. This technical measure can further and effectively reduce the contact friction area and ensure that the pusher can smoothly perform reciprocating movements on the base.

[0028] Furthermore, the support slide is formed on the top surface of the base's surrounding plate and is close to the moving spring. This technical measure, in conjunction with the armature, enables a stable and reliable support effect for the pusher.

[0029] The beneficial technical effects of the present invention are as follows: The above technical measures are designed for horizontal relays and the special characteristics of the movable spring sheet of the partition structure. Without affecting the elasticity of the movable spring sheet structure, the depth of the middle area between the two movable spring sheets is increased by forming protruding relief bosses on both sides of the movable spring mating end of the push card. During the release process, the moving spring in the above-mentioned technical measures first has its two pushing parts collide with the clearance protrusions on both sides of the pushing card, thereby achieving the first-stage buffering and energy absorption of the moving spring and initially reducing the swing amplitude of the entire moving spring head; then the middle contact part collidees with the corresponding end face of the pushing card, thereby achieving the second-stage buffering and energy absorption of the moving spring and further reducing the swing amplitude of the entire moving spring head; through the two-stage buffering and energy absorption in the preceding and following sequence, the swing amplitude of the entire moving spring head is significantly reduced, effectively mitigating the rebound of the moving spring head, thus helping to avoid the arcing technical problem caused by secondary contact.

[0030] In addition, the above-mentioned technical measures help reduce plastic lint. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of one structure of the present invention.

[0032] Figure 2 for Figure 1 Side view.

[0033] Figure 3 for Figure 1 Top view.

[0034] Figure 4 for Figure 1 A schematic diagram of the push card structure.

[0035] Figure 5 for Figure 4 The image shows a side view of the push card.

[0036] Figure 6 for Figure 1 A schematic diagram of the push card from another angle.

[0037] Figure 7 for Figure 1 A schematic diagram of the moving spring in the diagram.

[0038] Figure 8 for Figure 7 The diagram shows the structure of the moving spring in the rear direction.

[0039] The symbols in the diagram mean: 1—Pushing card; 11—Pushing cone; 12—Armature groove; 13—Skirt plate; 14—Pushing end face; 141—Vertical section plane one; 142—Vertical section plane two; 15—Relief boss; 16—Buffer boss; 2—Moving spring; 21—Push slot; 22—Contact part; 23—Push part; 24—Separator groove; 25—Moving contact; 3—Base; 31—Surrounding panel; 32—Support slide; 4—Archive; 5—Stationary reed. Detailed Implementation

[0040] This invention relates to relays, specifically to a cooperative structure between a pusher clip and a moving spring in a horizontal relay. The main technical content of this invention will be described in detail below with several embodiments. Embodiment 1 is illustrated in conjunction with the accompanying drawings—that is… Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 and Figure 8 The technical solution of the present invention is clearly and in detail explained; although other embodiments are not shown in separate drawings, their main structure can still be referred to the drawings of Embodiment 1.

[0041] It should be noted that the accompanying drawings of this invention are schematic, and unnecessary details have been simplified in order to clarify the technical objectives of this invention, so as to avoid obscuring the technical solutions contributed by this invention to the prior art.

[0042] Example 1 See Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 and Figure 8 As shown, the present invention is a cooperative structure between the push card and the moving spring of a horizontal relay, which includes a push card 1 and a moving spring 2.

[0043] Specifically, due to the unique structure of horizontal relays, the coil frame is horizontally mounted on the base 3, and the base 3 has side panels 31 that protrude upwards from both sides of the coil frame in the diameter direction. The base 3 can be an integrally formed structure with the coil frame, or it can be a separate assembly structure.

[0044] Corresponding to the two ends of the coil frame along the length direction, a moving spring 2 and a stationary spring 5 are mounted on the base 3 at one end of the coil frame, and an armature 4 is mounted on the base 3 at the other end.

[0045] The upper part of the moving spring 2 is the contact area, which is used to connect the moving contact 25; the lower part is the insertion part, which is used to form the lead-out foot.

[0046] The contact area of ​​the movable spring 2 is divided into two independently cooperating contact portions 22 and pushing portions 23 located on both sides of the contact portions 22 by two left and right partition grooves 24 arranged in the width direction. The central area of ​​the contact portion 22 is used to open a contact hole, through which the movable contact 25 is connected. The forming depth of the partition groove 24 from the top of the movable spring 2 is greater than the distance between the contact hole on the contact portion 22 and the top of the movable spring 2, that is, the bottom end of the partition groove 24 is below the contact hole, which helps to enhance the structural elasticity of the movable spring 2. On the outer vertical edge of the pushing portions 23 on both sides (i.e., the vertical edge opposite to the partition groove 24), there is a concave notch-shaped movable spring slot 21; each movable spring slot 21 on the outer vertical edge of the corresponding pushing portion 23 has an outward-opening U-shaped structure. The movable spring slots 21 on both sides are basically arranged in a left-right symmetrical structure.

[0047] Compared to the aforementioned coil frame and base 3 mating structure, the push card 1 is mounted on top of the coil frame and above the base 3. The main structure of the push card 1 is dome-shaped, with downward-protruding skirts 13 on both sides in its width direction.

[0048] One end of the push card 1 serves as the armature mating end, and an armature groove 12 with a strip-shaped structure is formed in the central area of ​​its width direction. The push card 1 is connected to the armature 4 through the armature groove 12.

[0049] The other end of the push card 1 serves as the mating end of the moving spring, and on both sides of its width direction (i.e., corresponding to the ends of the side skirts 13 of the push card 1), there are respectively outwardly protruding relief bosses 15. The top surfaces of the relief bosses 15 on both sides are mated with the top surface of the push card 1 by a stepped structure, and the relief bosses 15 on both sides are basically arranged in a left-right symmetrical structure.

[0050] Each side of the clearance boss 15 has a vertical surface that serves as the pushing end face 14 for engaging the aforementioned movable spring 2. On this surface, there is an outwardly convex pushing cone 11 for engaging the movable spring 2. Specifically, the vertical surface of the clearance boss 15 at the root of the pushing cone 11 serves as the pushing end face 14 for engaging the movable spring 2. The outer diameter of each pushing cone 11 and the spacing between the two pushing cones 11 on both sides correspond to the movable spring slots 21 on the movable spring 2. The pushing clip 1 engages with the two pushing cones 11 on the clearance bosses 15 on both sides of the movable spring engagement end, corresponding to the two movable spring slots 21 on the movable spring 2. The specific engagement structure is described below.

[0051] The pushing end face 14 on the aforementioned relief boss 15 is divided by the pushing cone 11 into a vertical segment plane 141 located on the upper side and a vertical segment plane 142 located on the lower side. That is, the vertical segment plane 141 is located on the upper side of the pushing cone 11, close to the top surface of the pushing card 1, while the vertical segment plane 142 is located on the lower side of the pushing cone 11. The vertical segment plane 142 and the vertical segment plane 141 are not on the same plane, that is, they are not coplanar. There is a height difference between them in the extension direction of the relief boss 15. The outward convex height of the vertical segment plane 142 on the lower side of the pushing cone 11 is slightly greater than the outward convex height of the vertical segment plane 141 on the upper side of the pushing cone 11. In the relay application structure, the moving spring in the released state leans against the upper vertical section plane 141 at a certain angle under the action of elastic force, effectively ensuring that the release gap between the moving and stationary contacts is qualified; during the process of pushing the moving spring, the pushing point changes from the upper vertical section plane 141 of the pushing cone 11 to the lower vertical section plane 142, and the pushing stroke of the moving spring is increased, effectively tracking the moving contact and ensuring reliable engagement between the moving and stationary contacts.

[0052] The end of the push card 1 between the two side relief bosses 15 has a concave structure, forming a large longitudinal space along the length of the push card 1, which is used for the second-stage buffering and energy absorption of the moving spring.

[0053] In the central region of the spring-fitting end of the push card 1 between the two side relief bosses 15, a protruding buffer boss 16 is formed on the end face of the push card 1 body. The buffer boss 16 serves to buffer and absorb energy from the collision of the middle contact point of the moving spring, reducing the rebound of the moving spring. Of course, the buffer boss 16 is formed by protruding in the region between the two side relief bosses 15, which also reduces the contact surface of the second-stage buffer energy absorption collision between the contact point and the push card, which helps to reduce the scratching area and reduce the generation of lint. The protrusion height of the buffer boss 16 is slightly less than the protrusion height of the relief bosses 15. At the same time, the arrangement position of the buffer boss 16 at the spring-fitting end of the push card 1 is basically aligned with the top surface of the push card 1, and is significantly higher than the arrangement position of the relief bosses 15 at the spring-fitting end of the push card 1, so as to better match the swing stroke and position of the middle contact point of the moving spring.

[0054] The mating structure between each push cone 11 of the push card 1 and the corresponding moving spring slot 21 on the push part 23 on both sides of the moving spring 2 is consistent. The following is a detailed description of one of the mating structures.

[0055] The push cone 11 of the push card 1 is inserted into the movable spring slot 21 of the push part 23. In the initial state, the outer wall of the push cone 11 of the push card 1 and the edge of the movable spring slot 21 of the push part 23 form a non-contact circumferential clearance fit. During the release of the movable spring 2, the controllable bouncing of the push card 1 within the fit gap helps to buffer and absorb the elastic force of the push part 23 of the movable spring 2, and also helps to reduce the burrs at the fit between the push cone 11 and the push part 23. The size of this circumferential clearance is determined according to the following requirements: - In the initial state of the horizontal relay, the push cone 11 on the static push card 1 and the moving spring slot 21 on the push part 23 maintain a non-contact circumferential clearance fit; - Under the action of the armature attraction and counter-thrust of the horizontal relay, the push cone 11 on the push card 1 of the displacement action and the moving spring slot 21 on the push part 23 still maintain a non-contact circumferential clearance fit. When the horizontal relay is reset, under the elastic thrust of the moving spring 2, the displacement action of the push card 1 will bounce slightly due to the elastic thrust, allowing the push cone 11 of the push card 1 to touch the moving spring slot 21 on the push part 23 (mainly touching the upper edge of the moving spring slot 21) during the slight bounce action, and the moving spring slot 21 constrains and limits the slight bounce of the push card 1.

[0056] Through the above structure, the skirts 13 on both sides of the push card 1 and the surrounding plates 11 on both sides of the base 3 around the coil frame form a corresponding upper and lower position, with the corresponding upper and lower positions basically consistent and without deviation. Since the moving spring slot 21 on the push part 23 and the push cone 11 on the push card 1 form a circumferential clearance fit, the push part 23 of the moving spring 2 loses its supporting function for the push card 1. In order to avoid direct surface contact friction between the bottom surface of the skirts 13 and the top surface of the surrounding plates 11 of the corresponding sides, an arc-shaped upward protruding support slide 32 is provided on the top surface of the surrounding plates 11 of the base 3, near the moving spring 2. The height of the support slide 32 is matched with the support height of the armature 4 for the push card 1, and the supporting surface of the support slide 32 is an outwardly protruding arc structure; through the cooperation of the support slide 32, the bottom surface of the skirt 13 and the top surface of the surrounding plates 11 form a clearance fit and do not contact each other.

[0057] In the above structure, the clearance bosses 15, where the two pushing cones 11 are located, are connected to the corresponding pushing portions 23 on the movable spring 2 through their respective pushing end faces 14. The top of the pushing portion 23 is higher than the top surface of the clearance boss 15, and is located above the top surface of the clearance boss 15, but lower than the top surface of the pushing clip 1. Based on the two planar structures of the pushing end faces 14, when the movable spring 2 is in the released state, the movable spring 2 is arranged at a certain inclination on the pushing end faces 14 of the clearance boss 15 under the action of elastic force. Meanwhile, due to the presence of the stepped structure on the top surface of the relief boss 15, the top of the pushing part 23 is suspended above the top surface of the relief boss 15. This allows the top of the pushing part 23 to be completely relieved at the moving spring engagement end of the pushing card 1. The top of the pushing part 23 of the moving spring 2 effectively avoids contact with the end face of the pushing card 1. During the attraction and release process of the moving spring 2, the top of the pushing part 23 does not scrape against the moving spring engagement end of the pushing card 1, effectively reducing or even avoiding the generation of lint.

[0058] The width of the pushing part 23 of the aforementioned moving spring 2 is slightly larger than the width of the pushing end face 14 of the corresponding clearance boss 15. When engaged with the clearance boss 15 of the push card 1, the area of ​​the pushing part 23 near the partition groove 24 extends out to the pushing end face 14 of the clearance boss 15.

[0059] The end of the push clip 1, located between the relief bosses 15 and the two push cones 11, is used to engage with the contact portion 22 on the moving spring 2. When the moving spring 2 is released and stationary, the contact portion 22 is located in the area between the two push cones 11 on the push clip 1, and maintains a clearance fit with the moving spring engagement end structure of the push clip 1, including the buffer boss 16. The top of the contact portion 22 of the moving spring 2 is lower than the top edge of the buffer boss 16, but higher than the bottom edge of the buffer boss 16.

[0060] The mating relationship between the buffer boss 16 at the end of the push card 1 and the contact portion 22 of the moving spring 2 is determined according to the following requirements: - In the initial state of the horizontal relay, the contact part 22 and the buffer boss 16 maintain a clearance fit. - When the moving spring 2 is released, the contact part 22 swings in the area between the two relief bosses 15 due to the elastic force. At the end of the swing, the top of the moving spring 2 collides and contacts the buffer boss 16.

[0061] In the relay with the above-described structure, during the release process of the moving spring 2, the pushing parts 23 on both sides collide with the push plate 1 (i.e., the clearance protrusions 15 on both sides of the push plate 1) before the middle contact part 22. During the collision between the pushing parts 23 on both sides and the push plate 1, the middle contact part 22 continues to swing and move within the longitudinal region between the clearance protrusions 15 on both sides. This causes the pushing parts 23 on both sides to collide with the corresponding clearance protrusions 15 first, achieving the first-stage buffering and energy absorption of the head of the moving spring 2, initially reducing the swing amplitude of the head of the moving spring 2. After completing the first-stage buffering and energy absorption, the contact part 22 collides with the buffer protrusion 16 between the clearance protrusions 15 on both sides, achieving the second-stage buffering and energy absorption of the head of the moving spring 2, further reducing the swing amplitude of the head of the moving spring 2. In this way, through two stages of buffering and energy absorption in the preceding and following sequence, the swing amplitude of the entire moving spring 2 head is greatly reduced, effectively mitigating the rebound of the moving spring 2 head, which helps to avoid the arcing technical problem caused by the secondary contact connection.

[0062] Example 2 This invention relates to a cooperative structure between a push card and a moving spring in a horizontal relay, comprising a push card and a moving spring.

[0063] Specifically, due to the unique structure of horizontal relays, the coil frame is horizontally mounted on the base, and the base has side panels that protrude upwards from both sides of the coil frame in the diameter direction. This base can be an integrally formed structure with the coil frame, or it can be a separate assembly structure.

[0064] Corresponding to the two ends of the coil frame along its length, a movable spring is mounted on the base at one end of the coil frame, and an armature is mounted on the base at the other end.

[0065] The upper part of the moving spring is the contact area, which is used to connect the moving contact; the lower part is the insertion part, which is used to form the lead-out pin.

[0066] The contact area of ​​the moving spring is divided into two independently cooperating contact sections by two dividing grooves arranged in the width direction, and pushing sections located on both sides of the contact sections. The central area of ​​the contact section is used to open a contact hole, through which the moving contact is connected. The forming depth of the dividing groove from the top of the moving spring is greater than the distance between the contact hole on the contact section and the top of the moving spring, that is, the bottom end of the dividing groove is below the contact hole, which helps to enhance the structural elasticity of the moving spring. On the outer vertical edges of the pushing sections on both sides (i.e., the vertical edges opposite to the dividing grooves), there are concave notch-shaped moving spring slots; each moving spring slot on the outer vertical edge of the corresponding pushing section has an outward-opening U-shaped structure. The moving spring slots on both sides are basically arranged in a left-right symmetrical structure.

[0067] Compared to the aforementioned coil frame and base assembly structure, the push card is mounted on top of the coil frame, above the base. The main structure of the push card is dome-shaped, with downward-protruding skirts on both sides in its width direction.

[0068] One end of the push card serves as the armature mating end, and a strip-shaped armature slot is formed in the center area of ​​its width direction. The push card is connected to the armature through the armature slot.

[0069] The other end of the push card serves as the mating end of the moving spring. On both sides of its width (corresponding to the ends of the side skirts of the push card), there are outwardly protruding relief bosses. The top surfaces of the relief bosses on both sides are mated with the top surface of the push card using a stepped structure. The relief bosses on both sides are arranged in a basically symmetrical structure.

[0070] The vertical surface of each side's clearance boss serves as the pushing end face for engaging the aforementioned movable spring. It has an outwardly convex pushing cone for engaging the movable spring; specifically, the vertical surface of the clearance boss at the root of the pushing cone is the pushing end face for engaging the movable spring. The outer diameter of each pushing cone and the spacing between the two pushing cones correspond to the movable spring slots on the movable spring. The push mechanism engages with the two pushing cones on the clearance bosses on both sides of the movable spring engagement end, corresponding to the two movable spring slots on the movable spring. The specific engagement structure is described below.

[0071] The pushing end face on the aforementioned clearance boss is divided by the pushing cone into two vertical segments: a first vertical segment on the upper side and a second vertical segment on the lower side. Specifically, the first vertical segment is located on the upper side of the pushing cone, near the top of the pushing plate, while the second vertical segment is located on the lower side. The second and first vertical segments are not on the same plane, i.e., they are not coplanar. They have a height difference along the extension direction of the clearance boss; the outward convex height of the second vertical segment on the lower side of the pushing cone is slightly greater than the outward convex height of the first vertical segment on the upper side of the pushing cone. In the application structure of the relay, the moving spring in the released state leans against the upper vertical section plane one at a certain angle under the action of elastic force, effectively ensuring that the release gap between the moving and stationary contacts is qualified; during the process of pushing the moving spring, the pushing point changes from the upper vertical section plane one of the pushing cone to the lower vertical section plane two, and the pushing stroke of the moving spring is increased, effectively tracking the moving contact and ensuring reliable engagement between the moving and stationary contacts.

[0072] The end of the push card moving spring between the two side relief bosses has an inward concave structure, forming a large longitudinal space along the length of the push card, which is used for the second-stage buffering and energy absorption of the moving spring.

[0073] The mating structure between each push cone of the push card and the corresponding moving spring slot on both sides of the moving spring is consistent. The following is a detailed explanation of one of the mating structures as an example.

[0074] The push cone of the push card is inserted into the movable spring slot of the push part. In the initial state, the outer wall of the push cone of the push card and the edge of the movable spring slot hole of the push part form a non-contact circumferential clearance fit. During the release of the movable spring, the controllable bouncing of the push card within the fit gap helps to buffer and absorb the elastic force of the push part of the movable spring, and also helps to reduce burrs at the fit between the push cone and the push part. The size of this circumferential clearance is determined according to the following requirements: - In the initial state of the horizontal relay, the push cone on the static push card and the moving spring slot on the push part maintain a non-contact circumferential clearance fit; - Under the action of the armature attraction and counter-thrust of the horizontal relay, the push cone on the push card of the displacement action and the moving spring slot on the push part still maintain a non-contact circumferential clearance fit; - When the horizontal relay is reset, under the elastic thrust of the moving spring, the push card of the displacement action will bounce slightly due to the elastic thrust. This allows the push cone of the push card to touch the moving spring slot on the push part (mainly the upper edge of the moving spring slot) during the slight bounce. The moving spring slot constrains and limits the slightly bounced push card.

[0075] Through the above structure, the skirts on both sides of the push card and the base side panels surrounding the coil frame form a vertically corresponding fit, with the vertically corresponding positions being basically consistent and without deviation. Because the moving spring slot on the push part and the push cone on the push card form a circumferential clearance fit, the pushing part of the moving spring loses its supporting function for the push card. To avoid direct surface contact friction between the bottom surfaces of the corresponding skirts and the top surfaces of the side panels, an arc-shaped upward-protruding support slide is provided on the top surface of the base side panels, near the moving spring. The height of this support slide matches the support height of the armature for the push card, and the supporting surface of the support slide is an outwardly convex arc structure. Through the cooperation of the support slide, the bottom surface of the skirt and the top surface of the side panels form a clearance fit and do not contact each other.

[0076] In the above structure, the clearance bosses on both sides, where the pushing cones are located, are connected to the corresponding pushing parts on the moving spring through their respective pushing end faces. The top of the pushing part is higher than the top surface of the clearance boss, located above the top surface of the clearance boss, but lower than the top surface of the push card. Based on the two planar structures of the pushing end faces, in the released state of the moving spring, the moving spring is arranged at a certain inclination on the pushing end face of the clearance boss under the action of elastic force. At the same time, based on the existence of the stepped structure on the top surface of the clearance boss, the top of the pushing part is suspended above the top surface of the clearance boss. This allows the top of the pushing part to be completely clearanced at the moving spring mating end of the push card. The top of the pushing part of the moving spring effectively avoids contact with the end face of the push card. During the engagement and release of the moving spring, the top of the pushing part does not scrape against the moving spring mating end of the push card, effectively reducing or even avoiding the generation of lint.

[0077] The width of the pushing part of the aforementioned moving spring is slightly larger than the width of the pushing end face of the corresponding clearance boss. When engaged with the clearance boss of the push card, the area of ​​the pushing part near the partition groove extends out to form the pushing end face of the clearance boss.

[0078] The push-lock end, located between the relief bosses on both sides of the push cone, is used to engage with the contact portion on the moving spring. When the moving spring is released and stationary, the contact portion is located in the area between the push cones on both sides of the push-lock and maintains a clearance fit with the moving spring engagement end structure of the push-lock.

[0079] The mating relationship between the moving spring mating face of the push card and the contact part of the moving spring plate shall be determined according to the following requirements: - In the initial state of the horizontal relay, the contact part and the mating end face of the moving spring maintain a clearance fit; - In the released state of the moving spring, the contact part swings in the area between the two relief bosses due to the elastic force. At the end of the swing, the top of the moving spring collides and contacts the mating end face of the moving spring.

[0080] In the relay with the above-described structure, during the release process of the moving spring, the pushing parts on both sides collide with the push plate (i.e., the clearance protrusions on both sides of the push plate) before the middle contact part. During the collision between the pushing parts on both sides and the push plate, the middle contact part continues to swing within the depth area between the clearance protrusions on both sides. This causes the pushing parts on both sides to collide with the corresponding clearance protrusions first, achieving the first-stage buffering and energy absorption of the entire moving spring head, initially reducing the swing amplitude of the entire moving spring head. After completing the first-stage buffering and energy absorption, the contact part collides with the moving spring mating end face between the clearance protrusions on both sides, achieving the second-stage buffering and energy absorption of the entire moving spring head, further reducing the swing amplitude of the entire moving spring head. In this way, through the two-stage buffering and energy absorption in sequence, the swing amplitude of the entire moving spring head is significantly reduced, effectively mitigating the rebound of the moving spring head and helping to avoid the arcing technical problem caused by secondary contact.

[0081] Compared to Embodiment 1, in this embodiment, the buffer boss between the two clearance bosses is removed at the moving spring mating end of the push card, so that the released moving spring contact part collides with the mating end surface with a larger contact surface, which is not conducive to preventing lint, but it can still be effectively achieved through two-stage buffer energy absorption in the order of first and last.

[0082] Example 3 The rest of the content of this embodiment is the same as that of embodiment 1 or 2, except that: The pushing end faces on the upper and lower sides of the pushing cone are on the same plane.

[0083] Compared to embodiments 1 or 2, in this embodiment, when the push point changes to the lower side of the push cone during the pushing process of the pusher card, it is not conducive to increasing the pushing stroke of the moving spring, and effective tracking of the moving contact cannot be formed. If the pushing stroke of the moving spring is increased, it is not conducive to achieving the required release gap between the moving and stationary contacts. Of course, this technical contradiction does not affect the sequential two-stage buffering energy absorption between the pusher card and the moving spring.

[0084] The above embodiments are only used to illustrate the present invention and are not intended to limit it.

[0085] Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that modifications can still be made to the above embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the present invention.

Claims

1. A structure for cooperating between a push card and a moving spring in a horizontal relay, comprising: A pusher (1) is assembled between the two ends of the coil frame; A movable spring (2) is mounted at one end of the coil frame; The contact area of ​​the moving spring (2) is divided by two partition grooves (24) into a relatively independent contact part (22) and a push part (23) on both sides of the contact part (22). The push part (23) has a push slot (21) that cooperates with the push card (1). Its features are: On both sides of the moving spring mating end of the push card (1), there are respectively outwardly convex relief bosses (15). The relief bosses (15) have outwardly convex push cones (11) used to mate with the moving spring (2). The vertical surface of the relief bosses (15) at the root of the push cones (11) is a push end face (14) used to mate with the moving spring (2). Furthermore, between the two relief bosses (15) on both sides of the moving spring mating end of the push card (1), there is also an outwardly convex buffer boss (16). In the application structure of the relay, the moving spring (2) is connected to the pushing cone (11) on both sides of the moving spring mating end of the pushing card (1) through the pushing slot (21) on the pushing part (23) on both sides; When the moving spring (2) is released and stationary, the contact part (22) is located in the area between the two pushing cones (11) on both sides of the push card (1), and maintains a clearance fit with the moving spring mating end of the push card (1), including the buffer boss (16); During the release of the moving spring (2), the two pushing parts (23) first collide with the two side relief bosses (15) of the pushing card (1) to achieve the first-stage buffer energy absorption, and the contact part (22) continues to swing and move in the longitudinal area between the two side relief bosses (15) and then collide with the buffer boss (16) to achieve the second-stage buffer energy absorption.

2. The push-lock and moving spring cooperation structure of the horizontal relay according to claim 1, characterized in that: The outer protrusion height of the buffer boss (16) of the push card (1) is less than that of the outer protrusion height of the clearance boss (15).

3. The push-lock and moving spring cooperation structure of the horizontal relay according to claim 1, characterized in that: In the application structure of the relay, the top of the contact portion (22) of the moving spring (2) is lower than the top edge of the buffer boss (16); The released spring (2) contacts the buffer boss (16) through the top of the contact part (22).

4. The push-lock and moving spring cooperation structure of the horizontal relay according to claim 1, 2 or 3, characterized in that: The position of the buffer boss (16) at the spring-fitting end of the push card (1) is higher than the position of the clearance boss (15) at the spring-fitting end of the push card (1). The top surface of the relief boss (15) and the top surface of the push card (1) are fitted with a stepped structure; In the application structure of the relay, the top of the push part (23) of the moving spring (2) is higher than the top surface of the relief boss (15) and lower than the top surface of the push card (1).

5. The push-lock and moving spring cooperation structure of the horizontal relay according to claim 1, characterized in that: The pushing end face (14) on the relief boss (15) is composed of a vertical section plane one (141) on the upper side of the pushing cone (11) and a vertical section plane two (142) on the lower side of the pushing cone (11); Furthermore, the convex height of the second vertical segment plane (142) is greater than the convex height of the first vertical segment plane (141).

6. The push-lock and moving spring cooperation structure of the horizontal relay according to claim 1, characterized in that: The forming depth of the partition groove (24) on the movable spring (2) from the top of the movable spring (2) is greater than the distance between the contact hole on the contact part (22) and the top of the movable spring (2).

7. The push-lock and moving spring cooperation structure of the horizontal relay according to claim 1, 3 or 6, characterized in that: The width of the pushing part (23) of the moving spring (2) is greater than the width of the pushing end face (14) of the relief boss (15); The push slot (21) on the push part (23) is formed with an inward notch structure on the outer vertical side of the push part (23); In the application structure of the relay, the area of ​​the push part (23) near the partition groove (24) extends out to the push end face (14) of the relief boss (15).

8. The push-lock and moving spring cooperation structure of the horizontal relay according to claim 7, characterized in that: In the application structure of the relay, the moving spring (2) is in a released and stationary state, and the push cone (11) on the relief boss (15) and the push slot (21) on the push part (23) are engaged with each other in a circumferential clearance.

9. The push-lock and moving spring cooperation structure of the horizontal relay according to claim 1, characterized in that: The push card (1) is connected to the base (3) on both sides of the coil frame by the skirts (13) on both sides, forming an upper and lower corresponding fit with the side panels (31) of the base (3) on both sides of the coil frame. Furthermore, at least one support slide (32) is provided between the skirt plate (13) and the surrounding plate (31) at each corresponding mating point. Under the support of the support slide (32), the bottom edge of the skirt plate (13) and the top edge of the surrounding plate (31) are fitted with a gap.

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