Laminated movable contact spring and push rod type relay comprising same

Abstract

The utility model relates to the technical field of relays, and particularly discloses a laminated movable contact spring and a push rod type relay comprising the same. Wherein a reed body of the movable reed comprises a plurality of reeds which are overlapped together, and a first reed is close to a magnetic circuit part in the relay structure; the first reed is provided with at least one group of concave structures for adjusting elasticity at the edges of the two sides in the width direction; the other reeds are provided with receding notches which are formed in an inward-concave mode, located on the inner sides of the corresponding inward-concave structures and staggered with the outlines of the corresponding inward-concave structures corresponding to the edge areas of the inward-concave structures on the first reed. Aiming at the particularity that a push rod type relay enables the movable contact spring to form a laminated structure in order to adapt to a large-current working condition environment, the structure stress concentration phenomenon of the movable contact spring at the edges of the two sides in the width direction is effectively improved, and the stress of the movable contact spring in thrust deformation is small; and the formed push rod type relay can basically maintain the original electromagnetic attraction design to realize high current-carrying performance.

Description

Technical Field

[0001] This utility model relates to the field of relay technology, specifically a stacked moving spring and a push rod relay including the moving spring. Background Technology

[0002] A push-rod relay mainly consists of a base, a magnetic circuit section connected to the base by a push-button mechanism, and a contact section. The magnetic circuit section includes a coil frame on the base, an iron core within the coil frame, a coil wound around the coil frame, a yoke beside the coil, an armature mounted on the yoke in a flip-up configuration, and a compression spring that applies spring force to the back of the armature. The contact section includes a moving spring assembly and a stationary spring assembly on the base. Its working principle is roughly as follows: when current is applied to both ends of the coil leads, the excitation current of the coil will generate a magnetic field that meets the design requirements. The magnetic field forms a magnetic circuit through the working air gap between the iron core, yoke, and armature, and generates an electromagnetic attraction in the working air gap. When the excitation current rises to a certain value, the electromagnetic attraction torque will overcome the elastic reaction torque of the moving spring in the contact part, causing the armature to rotate, thereby driving the pusher to push the moving spring in the contact part, realizing the closure of the moving and stationary contacts in the contact part. When the excitation current decreases to a certain value, the elastic reaction torque of the moving spring in the contact part is greater than the electromagnetic attraction torque, the armature returns to the initial state, and the moving and stationary contacts in the contact part open.

[0003] To meet the technical requirements of high-current operating environments, the aforementioned push-rod relays, guided by the design logic of minimizing the increase in electromagnetic attraction in the magnetic circuit, use a double-layer thin-sheet stacked structure for the moving spring, thereby achieving high current carrying capacity and low temperature rise performance. Currently, the molding of this type of stacked moving spring involves stacking two thin-sheet springs with basically identical contours together in the thickness direction, as illustrated in Chinese patent literature entitled "An Electromagnetic Relay," publication number CN 214505389 U, publication date October 26, 2021. This type of moving spring, formed by stacking two thin-sheet springs with basically identical contours, presents the following main technical problems in use:

[0004] Firstly, since there are inevitably elastic adjustment concave structures, including push-lock holes, at the two edges of the moving spring in the width direction, the concave structure at the edge of the two thin-plate springs with basically the same contour structure tends to be consistent. Furthermore, since the concave structure at the edge is a stress concentration area during bending deformation, the stress at the edge of the two springs is concentrated, which makes it easy for plastic deformation or even fracture to occur during repeated elastic deformation.

[0005] Secondly, due to the overlapping structure of two thin-plate springs with basically the same contour structure, the structural rigidity of the formed moving spring is increased. This results in high technical requirements for the thrust and a large rebound reaction force generated by the elastic release. This means that the push rod relay using this moving spring needs to have a large electromagnetic attraction force and contact arrangement space, which means that the design structure of the push rod relay needs to be upgraded.

[0006] In existing technologies, there are also techniques that differentiate the width of the two springs that make up a stacked moving spring. For example, there is a Chinese patent document entitled "A Small Electromagnetic Relay," publication number CN213150682 U, publication date May 7, 2021. This technology stacks two thin springs with different widths together to form a moving spring, so that the edge of the spring facing the stationary spring side (i.e., the stationary spring side spring) is inside the edge of the spring facing the magnetic circuit side (i.e., the magnetic circuit side spring). This differentiated stacking structure has a certain effect on improving the structural stress concentration at the two edges of the moving spring in the width direction. However, because the static spring side sheet in this technology has a straight edge structure in the width direction, its fit with the edge of the magnetic circuit side sheet in the width direction is relatively uncoordinated. As a result, on the one hand, it cannot reliably disperse the structural stress distribution of the concave edge structure of the magnetic circuit side sheet; on the other hand, it is not conducive to optimizing and adjusting the elastic deformation performance of the magnetic circuit side sheet, resulting in a large structural rigidity of the formed moving spring sheet, requiring a large electromagnetic attraction force to generate thrust, and the rebound reaction force generated by elastic release is also large, which is not conducive to the compact structure and miniaturization of the same specification of push rod relay. Utility Model Content

[0007] The technical objective of this utility model is to address the specific requirements of the push rod relay for adapting to high current operating conditions and the shortcomings of existing technologies by providing a stacked moving spring that can reliably improve the structural stress concentration at both edges in the width direction and optimize elastic deformation performance, as well as a push rod relay containing the moving spring.

[0008] The technical objective of this utility model is achieved through the following technical solution: a stacked moving spring, which has a spring body;

[0009] The reed body comprises multiple reeds stacked together in the thickness direction;

[0010] In the relay structure, the reeds of the reed body are arranged in order of proximity to the magnetic circuit from near to far, with the first reed being the one closest to the magnetic circuit.

[0011] The first reed has at least one set of concave structures at its two edges in the width direction for adjusting the elasticity of the first reed;

[0012] Each of the remaining springs in the spring body, except for the first spring, has a recessed notch corresponding to the edge region of the concave structure on the first spring, which is located inside the corresponding concave structure and offset from the contour of the corresponding concave structure.

[0013] The aforementioned technical measures address the unique characteristic of the push-rod relay, which employs a stacked structure for the moving reed to adapt to high-current operating conditions. The width-direction edges of the other reeds (note that "other reeds," "remaining reeds," "other reeds," or "remaining reeds" in the following text, unless otherwise specified, refer to the reeds excluding the first reed near the magnetic circuit) are offset from the corresponding concave structures on the first reed near the magnetic circuit by a clearance notch structure from the inside. This allows the clearance notches on the edges of the other reeds to disperse the structural stress distribution at the corresponding concave structures of the first reed, and the concave structures on the edges of the first reed to disperse the structural stress distribution at the corresponding clearance notches of the other reeds. The two work synergistically at the width-direction edges, significantly improving the structural stress concentration phenomenon at the width-direction edges. Repeated testing has shown that this synergistic structure essentially prevents the moving reed from undergoing plastic deformation or even breakage during repeated elastic deformation. Furthermore, because the other stacked reeds and the first reed form a differentiated fit in width at the concave structure of the elastic adjustment, the deformation of the first reed under thrust is easily achieved. This effectively reduces the technical requirements for the thrust generated by the electromagnetic attraction and also allows for effective optimization of the rebound force of the entire moving reed when the elastic force is released through the other reeds, preventing excessive rebound force of the moving reed. Therefore, the above technical measures not only improve the stress concentration phenomenon of the moving reed structure but also help reduce the technical requirements for electromagnetic attraction, thereby facilitating the compactness and miniaturization of the push rod relay structure using this moving reed.

[0014] As one of the preferred technical solutions, the concave structure at the two edges of the first spring in the width direction is a push-lock hole formed at one edge of the push section of the first spring, and the push-lock hole on each side is a C-shaped contour structure with the opening facing outward.

[0015] Correspondingly, at the edge of the pushing section of each of the other reeds, there is a recessed notch that is offset from the corresponding pushing card hole, and the outline of the notch is matched with the outline of the corresponding pushing card hole.

[0016] Furthermore, the clearance notch is a flat-bottomed concave structure with two corners on the top and bottom sides of the concave flat bottom in the height direction. These two corners are located on the inner side of the corresponding push card through hole on the top and bottom sides in the height direction.

[0017] The aforementioned technical measures address the inherent design limitations of the structure where the first spring forms a push-lock hole at the pushing section. Firstly, the width of each of the other springs is smaller than that of the first spring, resulting in an irregularly stacked arrangement of multiple springs. This reduces the thrust required by the electromagnetic attraction and effectively optimizes the rebound force of the entire moving spring during release. Secondly, the other springs are used to engage with the push-lock hole at the edge of the first spring, creating a misaligned fit with a clearance notch. This effectively reduces the thrust requirement of the multi-layered moving spring structure and prevents the structural stress of the first and other springs from concentrating at the push-lock hole during thrust deformation. This significantly reduces the risk of plastic deformation or even breakage of the moving spring at the push-lock hole during thrust deformation.

[0018] As one of the preferred technical solutions, the concave structure at the two edges of the first spring in the width direction is an elastic adjustment step formed at one edge of the pin segment of the first spring. The elastic adjustment step on each side is a step structure that is wider at the bottom and narrower at the top, located above the pin connection position.

[0019] Correspondingly, at the edge of the pin segment of each of the other reeds, there is a recessed notch two that is offset from the corresponding elastic adjustment step. The outline of the notch two is matched with the outline of the corresponding elastic adjustment step.

[0020] Furthermore, the second clearance notch is a flat-bottomed concave structure with two corners located on the top and bottom sides of the concave flat bottom in the height direction. These two corners are located on the inner sides of the top and bottom sides of the corresponding elastic adjustment step in the height direction.

[0021] The aforementioned technical measures are based on the design logic of minimizing the increase in electromagnetic attraction in the magnetic circuit. A stepped structure is formed at the lead section of the first reed to enhance its elastic deformation capability. Given the unique characteristics of this design, firstly, the width of each of the other reeds is smaller than that of the first reed, forming an irregularly stacked arrangement of multiple reeds. This reduces the thrust required by the electromagnetic attraction and effectively optimizes the rebound force of the entire moving reed when the elastic force is released. Secondly, the other reeds serve as the parts that engage with the elastic adjustment step at the edge of the first reed, forming a misaligned fit with a clearance notch. This effectively reduces the thrust requirement of the multi-layered moving reed structure and prevents the structural stress of the first and other reeds from concentrating at the elastic adjustment step during thrust deformation. This significantly reduces the risk of plastic deformation or even breakage of the moving reed at the elastic adjustment step during thrust deformation.

[0022] As one of the preferred technical solutions, the width of each of the remaining reeds, except for the first reed, is at least less than the width of the first reed at the corresponding location, at the push section and the pin section.

[0023] This technical measure creates an irregular overlap between the other reeds and the first reed in the width direction, thereby reducing the technical requirements for the thrust generated by the electromagnetic attraction and effectively optimizing the rebound reaction force of the entire moving reed when the elastic force is released through the other reeds.

[0024] As one of the preferred technical solutions, an elastic adjustment hole is provided on the pin segment of the first reed, located on the top side of the pin connection position in the height direction and at the center in the width direction.

[0025] And / or, on the first pushing section of the first reed, there is a second elastic adjustment hole located at the middle of the pushing through hole in the width direction.

[0026] The above-mentioned technical measures can reduce the elastic force of the first spring after its elastic release by distributing stress in different parts, thereby constraining the rebound force of the moving spring when the elastic force is released, and effectively reducing the risk of arcing and secondary conduction.

[0027] As one of the preferred technical solutions, in the stacked structure of the reed body, there is an elastic gap with a triangular structure between two adjacent reeds arranged between the lead segment and the push segment;

[0028] Furthermore, between the two springs arranged in adjacent positions, the spring near the normally open stationary spring assembly forms a bottom edge of the elastic gap, and the spring near the magnetic circuit portion forms two waist edges of the elastic gap, the length of the bottom edge being greater than the length of the two waist edges respectively.

[0029] The above-mentioned technical measures are based on the special characteristic of the multiple springs being stacked together in the thickness direction. An elastic gap with an approximately triangular structure is formed between two layers of springs arranged in adjacent positions. This improves the bendability and deformation performance of the springs near the normally open stationary spring assembly (unless otherwise specified, the expressions "springs near the magnetic circuit part" and "springs near the normally open stationary spring assembly" refer to the relative positions between two springs arranged in adjacent positions) under thrust. This effectively reduces the structural stress of the springs near the normally open stationary spring assembly during thrust deformation. As a result, the formed push rod relay can achieve high current carrying capacity while basically maintaining the original electromagnetic attraction design. While achieving high current carrying capacity, it is also conducive to the relative compactness and miniaturization of the overall structure of the push rod relay, avoiding the need for upgrading the design of the magnetic circuit part and the overall structural dimensions. Meanwhile, the angled structure of the spring near the magnetic circuit section at the elastic gap creates, on the one hand, a clearance space for the spring near the normally open stationary spring assembly to deform under thrust, reducing the interference of structural stresses during compression; on the other hand, it enhances the structural rigidity of the spring near the magnetic circuit section compared to the spring near the normally open stationary spring assembly, making the protection of contact closure under thrust more stable, and also constraining and limiting the rebound force of the entire moving spring when the spring force is released, reducing the phenomenon of contact ignition and secondary conduction caused by the rebound force.

[0030] Furthermore, the spring near the magnetic circuit portion is integrally composed of a lead segment, a bent segment, and a pushing segment. The bent segment of the spring near the magnetic circuit portion is an obliquely bent transition structure where the lead segment is close to the magnetic circuit portion in the relay structure and the pushing segment is far away from the magnetic circuit portion in the relay structure. The bent segment of the spring near the magnetic circuit portion and the lead segment form an obtuse angle fit relationship, and the bent segment of the spring near the magnetic circuit portion and the pushing segment form an obtuse angle fit relationship.

[0031] Furthermore, in the overlapping relationship of two adjacent springs, the angle between the bent section and the lead section of the spring near the magnetic circuit is matched with the angle between the bent section and the lead section of the spring near the normally open stationary spring assembly.

[0032] The above-mentioned technical measures enable the elastic gaps of the approximately triangular structure to form an arrangement with a certain slope in the vertical height direction. While reliably realizing the function of the triangular elastic gaps, they also enable the springs near the magnetic circuit to form a stable overlap with the springs near the normally open stationary spring assembly. Even during thrust deformation, the overlap structure at the elastic gap will basically not delaminate. It also reliably achieves the technical effect that the rigidity of the springs near the magnetic circuit at the elastic gap is higher than that of the springs near the normally open stationary spring assembly. This makes the protection of contact closure under thrust more stable and the constraint of the rebound reaction force of the entire moving spring when the spring force is released more reliable.

[0033] Furthermore, the angle between the bent section of the spring near the magnetic circuit and the pin section is a rounded transition structure;

[0034] The bend between the bent section and the pushing section of the reed near the magnetic circuit is a rounded transition structure.

[0035] The above-mentioned technical measures can effectively avoid excessive stress concentration at the corner of the spring near the magnetic circuit, so that during long-term service, the corner will basically not undergo plastic deformation or even breakage.

[0036] Furthermore, the angle between the bent section of the spring near the magnetic circuit and the pin section is 110° to 150°.

[0037] This technical measure was obtained through repeated optimization and simulation verification. If the angle is too small, it will not only increase the structural stress during thrust deformation, but also cause significant delamination of the overlapping structure at the elastic gap of the moving spring during thrust deformation. If the angle is too large, it will compress the clearance space for the spring near the normally open stationary spring assembly during thrust deformation, also increasing the structural stress during thrust deformation, and hindering the overlapping and forming of the moving spring. Therefore, this technical measure reliably achieves the aforementioned triangular elastic gap effect while enabling the spring near the magnetic circuit portion to form a stable overlap with the spring near the normally open stationary spring assembly, facilitating its formation and minimizing structural stress during thrust deformation. This is one of the key technical guarantees for achieving the optimal effect of this utility model.

[0038] Furthermore, the spring sheet near the normally open stationary spring assembly is integrally composed of a lead segment, a bent segment, and a pushing segment. The bent segment of the spring sheet near the normally open stationary spring assembly is an obliquely bent transition structure where the lead segment is closer to the magnetic circuit in the relay structure and the pushing segment is farther from the magnetic circuit in the relay structure. The bent segment of the spring sheet near the normally open stationary spring assembly and the lead segment form an obtuse angle fit relationship. The bent segment of the spring sheet near the normally open stationary spring assembly and the pushing segment form an obtuse angle fit relationship.

[0039] Furthermore, the angle between the bent section and the pin section of the reed near the normally open stationary spring assembly is greater than the angle between the bent section and the pin section of the reed near the magnetic circuit portion.

[0040] The above-mentioned technical measures enable the elastic gaps of the approximately triangular structure to form an arrangement with a certain slope in the vertical height direction. While reliably realizing the function of the triangular elastic gaps, they also enable the springs near the magnetic circuit to form a stable overlap with the springs near the normally open stationary spring assembly. Even during thrust deformation, the overlap structure at the elastic gap will basically not delaminate. It also reliably achieves the technical effect that the rigidity of the springs near the normally open stationary spring assembly at the elastic gap is lower than that of the springs near the magnetic circuit. This reliably reduces the structural stress of the springs near the normally open stationary spring assembly during thrust deformation and improves the bending deformation performance of the springs near the normally open stationary spring assembly under thrust.

[0041] Furthermore, in the overlapping relationship of two adjacent spring sheets, one corner of the elastic gap closes at the angle between the bent section and the lead section of the spring sheet near the normally open stationary spring assembly, and the other corner of the elastic gap closes at the angle between the bent section and the push section of the spring sheet near the normally open stationary spring assembly. This technical measure, based on the two adjacent stacked sheets bent into an approximately triangular elastic gap, ensures the stable existence of the elastic gap and does not hinder the stability of the overlapping of the two adjacent stacked sheets.

[0042] As one of the preferred technical solutions, the reed body is composed of a first reed and a second reed stacked together in the thickness direction;

[0043] In the relay structure, the first reed is the reed closest to the magnetic circuit, and the second reed is the reed closest to the normally open stationary reed assembly.

[0044] Compared to relays of the same specifications, the above-mentioned technical measures can reliably increase the current-carrying area of ​​the moving spring while basically eliminating the need to increase the electromagnetic attraction design requirements. They also have good low-temperature rise performance, which helps the finished relays to form a competitive advantage in the market.

[0045] Furthermore, the first and second springs of the spring body are integrally bent and stacked, with the bend located at the top of the contact connection in the height direction. This technical measure makes it easy to realize a double-layer stacked moving spring, saving on spring manufacturing molds, facilitating the adjustment of bending parameters on the springs, ensuring high consistency of the formed moving springs, and enabling simple and rapid automated molding of double-layer stacked moving springs.

[0046] As one of the preferred technical solutions, the reed body is connected with independently formed pins at the pin connection position;

[0047] The pin connected to the position extends outward from the pin segment of the reed body at the bottom in the height direction.

[0048] Furthermore, the reed body and the pin are connected by a riveting relationship, and the pin is arranged on the side of the reed body facing the magnetic circuit part in the relay structure, and the thickness of the pin is greater than the thickness of the reed body;

[0049] In the assembly relationship with the relay base, the pin is used for mounting and fixing in the base.

[0050] Furthermore, one end of the pin extends to the elastic gap of the reed body.

[0051] Furthermore, the maximum height of the pin at the end of the elastic gap from the lowest corner of the lowest elastic gap is 2mm.

[0052] The above-mentioned technical measures form the pins of the moving reed independently of the reed body. On the one hand, this helps to reduce the technical difficulty of forming the reed body; on the other hand, it helps to improve the structural strength of the pins, so that the assembly relationship of the moving reed on the base can be stably maintained; and on the other hand, it helps to increase the current carrying area of ​​the pins.

[0053] In the above technical measures, the pins are arranged on the side of the reed body facing the magnetic circuit, and one end of the pins extends to the elastic gap of the reed body (including adjacent to the mating or at the mating point), so that the pins mounted on the base have a good stopping and limiting effect on the reed body when the elastic force is released, that is, to stop and constrain the rebound force of the reed body when the elastic force is released, and reduce the phenomenon of ignition arcing and secondary conduction caused by the rebound force.

[0054] The aforementioned stop and limit effect achieved by the pin, compared to the stop and limit structure attached to the housing in the prior art, achieves a "two-in-one" dual function with the pin, eliminating the need for a more complex and costly additional stop and limit structure. This contributes to a simpler and lower-cost structure for the entire push rod relay.

[0055] A push-rod type relay includes a magnetic circuit portion, a contact portion, and a push-lock located between the magnetic circuit portion and the contact portion;

[0056] The moving spring assembly comprising the contact portion has the moving spring structure described in any of the above claims.

[0057] Furthermore, the magnetic circuit portion includes a coil frame, an iron core, a coil, a yoke, and an armature mounted on a base;

[0058] The contact portion includes a moving spring assembly and a normally open stationary spring assembly mounted on the base; or, the contact portion includes a normally closed stationary spring assembly, a moving spring assembly, and a normally open stationary spring assembly mounted on the base.

[0059] The magnetic circuit portion and the contact portion are arranged in a left-right position on the base and engage with a push card.

[0060] The pusher is located between the armature and the moving spring assembly. The armature, which flips on the yoke, pushes the pusher to make the contact portion conductive, or the disconnected contact portion pushes the pusher to make the armature flip on the yoke.

[0061] The moving spring assembly of the aforementioned push rod relay is formed based on the aforementioned moving spring, thus possessing the corresponding technical effects brought about by the aforementioned moving spring. Specifically, it can effectively improve the phenomenon of structural stress concentration at both edges of the moving spring in the width direction, and will basically not experience plastic deformation or even breakage during long-term service. Moreover, it can effectively reduce the technical requirements of elastic deformation on the thrust generated by electromagnetic attraction. This allows the push rod relay to reliably achieve high current carrying capacity while basically maintaining the original electromagnetic attraction design, avoiding the need for upgrading the magnetic circuit and overall structural dimensions. This is conducive to forming a lower-dimensional competitive advantage in the market and has a good market prospect.

[0062] The beneficial technical effects of this utility model are as follows: Addressing the unique characteristic of the push-rod relay, which employs a stacked structure for the moving spring to adapt to high-current operating conditions, the coordinated action of the first spring near the magnetic circuit portion with the other springs farther away in the width direction effectively reduces stress concentration at the edges of the moving spring in the width direction. This prevents plastic deformation and even breakage during long-term service. Furthermore, the coordinated action of the first spring and other springs in the width direction, the elastic adjustment hole design on the first spring, and the approximately triangular elastic gap between adjacent springs minimize stress on the moving spring during thrust deformation. This allows the push-rod relay to achieve high current-carrying capacity while maintaining its original electromagnetic attraction design. Simultaneously, this high current-carrying capacity facilitates a more compact and miniaturized overall structure, avoiding the need for upgrades to the magnetic circuit and overall structural dimensions. This allows the resulting push-rod relay to compete in the market with a competitive advantage. Attached Figure Description

[0063] Figure 1 This is a schematic diagram of the structure of the reed body of this utility model.

[0064] Figure 2 for Figure 1 A schematic diagram of the structure of the first reed in the middle.

[0065] Figure 3 for Figure 1 A schematic diagram of the structure of the second reed.

[0066] Figure 4 for Figure 1 The left view.

[0067] Figure 5 for Figure 1 The diagram shows the structure of the moving spring composed of the spring body and the pin.

[0068] Figure 6 This is a schematic diagram of a push rod type relay according to this utility model.

[0069] Figure 7 This is a schematic diagram of another structure of the push rod relay of this utility model.

[0070] Figure 8 This is a schematic diagram of another structure of the reed body of this utility model.

[0071] The symbols in the diagram have the following meanings: 1—Reed body; 11—First reed; 111—Pin segment one; 112—Bending segment one; 113—Push segment one; 114—Elastic adjustment step; 115—Elastic adjustment hole one; 116—Elastic adjustment hole two; 117—Push card through hole; 12—Second reed; 121—Pin segment two; 122—Bending segment two; 123—Push segment two; 124—Relief notch one; 1241—Concave flat bottom one; 1242—Edge one; 125—Relief notch two; 1251—Concave flat bottom two; 1252—Edge two; 13—Elastic gap; 14—Third reed; 2—Pin; 3—Base; 4—Coil; 5—Yoke; 6—Armature; 7—Push card; 8—Normally open stationary spring assembly; 9—Normally closed stationary spring assembly. Detailed Implementation

[0072] This utility model relates to the field of relay technology, specifically to a stacked moving spring and a push-rod relay including the moving spring. The main technical solution of this utility model will be described in detail below with reference to several embodiments. Embodiment 1 is illustrated in conjunction with the accompanying drawings—that is… Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 The technical solution of this utility model will be clearly and thoroughly explained; Embodiment 2 is illustrated in conjunction with the accompanying drawings. Figure 7 The technical solution of this utility model will be clearly and thoroughly explained; Embodiment 9 is illustrated in conjunction with the accompanying drawings. Figure 8 The technical solution of this utility model is clearly and in detail explained; although other embodiments are not drawn separately, their main structure can still be referred to the drawings of Embodiment 1, Embodiment 2 or Embodiment 9.

[0073] It should be noted that the accompanying drawings of this utility model are schematic, and unnecessary details have been simplified to clarify the technical purpose of this utility model, so as to avoid obscuring the technical solution contributed by this utility model to the prior art. In addition, the expressions such as "about" and "basically" regarding quantity or fit relationship in the following text mean that reasonable assembly errors and processing errors are allowed in the industry, and do not literally describe absolute quantity or fit relationship.

[0074] Example 1

[0075] See Figure 6 As shown, the push rod relay of this utility model includes a base 3 and a coil frame, iron core, coil 4, yoke 5, armature 6, push clip 7, moving spring assembly and stationary spring assembly 8, etc., assembled on the base 3.

[0076] The magnetic circuit consists of the coil frame, iron core, coil 4, yoke 5, and armature 6 on the base 3. The moving spring assembly and normally open stationary spring assembly 8 on the base 3 (normally, normally open and normally closed refer to the double stationary spring assembly in the relay; the moving spring assembly is located between the two sets of stationary spring assemblies; the stationary spring assembly between the magnetic circuit and the moving spring assembly is usually defined as the normally closed stationary spring assembly, and the stationary spring assembly away from the magnetic circuit is usually defined as the normally open stationary spring assembly; the engaging / disengaging action of the moving spring assembly switches between the normally open and normally closed stationary spring assemblies; since the relay in this embodiment has only one set of stationary spring assemblies, and the arrangement of this stationary spring assembly is farther from the magnetic circuit than the moving spring assembly, the moving spring assembly is located between the stationary spring assembly and the magnetic circuit, and is in a normally open engagement relationship with the moving spring assembly; therefore, the stationary spring assembly mentioned below in this embodiment refers to the normally open stationary spring assembly 8) constitute the contact part. The magnetic circuit section and the contact section are arranged in a left-right position on the base 3. The push card 7 is located between the armature 6 of the magnetic circuit section and the moving spring assembly of the contact section. The armature 6, which flips on the yoke 5, pushes the push card 7 to move towards the stationary spring assembly 8, thereby causing the moving spring assembly to deform elastically towards the stationary spring assembly 8, and the contact section becomes conductive; or, if the contact section is disconnected, the elastically released moving spring assembly pushes the push card 7, thereby causing the armature 6 to flip on the yoke 5.

[0077] The moving spring assembly consists of a moving spring and a moving contact, as described below.

[0078] The stationary spring assembly consists of a stationary spring and a stationary contact.

[0079] To be suitable for high-current operating environments, the moving spring of the above-mentioned moving spring assembly and the stationary spring of the stationary spring assembly are relatively thicker than ordinary moving springs and stationary springs, in order to increase the current carrying area, reduce the current density in the spring during service, and thus reduce the heat generation of the spring, achieving the technical effect of low temperature rise.

[0080] See Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5As shown, the moving spring used in the above-mentioned moving spring assembly has a spring body 1 and a pin 2 that are assembled and connected together after being separately formed. In the following structural description of them, the height direction refers to the height shown in the figure, that is, the state shown with the base as the assembly bottom; the thickness direction refers to the direction of the stacked layer, that is, along the direction of the push card; and the width direction refers to the direction transverse to the direction of the push card.

[0081] To accommodate high current carrying capacity and minimize thrust, the reed body 1 is a stacked structure in the thickness direction of a first reed 11 (located on the side adjacent to the magnetic circuit in the relay structure) and a second reed 12 (located on the side adjacent to the stationary spring assembly 8 in the relay structure). To enable low-cost, easy, and high-quality molding of this stacked structure, the first reed 11 and the second reed 12 of the reed body 1 are integrally bent stacked structures, with the bent position of the stack located at the top of the contact connection position (i.e., the moving contact connection position) in the height direction.

[0082] In the above-mentioned stacked structure, the first spring 11 is integrally composed of a lead segment 111, a bending segment 112, and a pushing segment 113.

[0083] Specifically, pin segment 111 is used as a combination connection pin 2.

[0084] The bending segment 112 causes the pin segment 111 and the push segment 113 to be bent and misaligned in the thickness direction of the spring body 1, so as to form the elastic gap 13 and generate corresponding bending deformation in conjunction with the release of thrust or elasticity during service.

[0085] The push section 113 is used to arrange the push card through hole 117 and the connection position for arranging the moving contact. In service, it is also the main part that produces corresponding bending deformation in conjunction with the release of thrust or elasticity.

[0086] Under the bending effect of the aforementioned bending section 112, the lead section 111 of the first reed 11 is closer to the magnetic circuit in the relay structure, while the push section 113 is farther away from the magnetic circuit (closer to the stationary spring assembly) in the relay structure. To accommodate the thrust deformation and reduce the electromagnetic attraction force generated on the magnetic circuit, the bending section 112 is a slanted bending transition structure where the lead section 111 is closer to the magnetic circuit in the relay structure, and the push section 113 is farther away from the magnetic circuit in the relay structure. That is, the bending section 112 and the lead section 111 form an obtuse angle fit, and the bending section 112 and the push section 113 also form an obtuse angle fit. To avoid stress concentration at the bending point of the first reed 11, the angle between the bending section 112 and the lead section 111 is required to be a rounded transition structure, and the angle between the bending section 112 and the push section 113 is also required to be a rounded transition structure. As a key part that coordinates with the second spring 12 to generate bending deformation and constrain the elastic release reaction force, the angle between the aforementioned bending section 112 and the pin section 111 is reasonably selected within the range of 110 to 150° (e.g., 110°, 120°, 130°, 140° or 150°, etc.).

[0087] In the above-mentioned stacked structure, the second spring 12 is integrally formed by the pin segment 121, the bending segment 122 and the pushing segment 123.

[0088] Specifically, pin segment 2 121 is used in conjunction with pin segment 1 111 to connect pin 2.

[0089] The bending segment 122 causes the pin segment 121 and the push segment 123 to be bent and misaligned in the thickness direction of the spring body 1, so as to form the elastic gap 13 and generate corresponding bending deformation in service in conjunction with the release of thrust or elasticity.

[0090] The second push section 123 is used to arrange the connection position of the push card in conjunction with the first push section 113, and is also used to arrange the connection position of the moving contact. In service, it is also the main part that generates corresponding bending deformation in conjunction with the release of thrust or elastic force.

[0091] Under the bending effect of the aforementioned bending segment 122, the pin segment 121 of the second reed 12 is closer to the magnetic circuit in the relay structure, while the pushing segment 123 is farther away from the magnetic circuit (closer to the stationary spring assembly) in the relay structure. To accommodate the thrust deformation and reduce the electromagnetic attraction force on the magnetic circuit, the bending segment 122 is a slanted bending transition structure where the pin segment 121 is closer to the magnetic circuit in the relay structure, and the pushing segment 123 is farther away from the magnetic circuit in the relay structure. That is, the bending segment 122 and the pin segment 121 form an obtuse angle fit, and the bending segment 122 and the pushing segment 123 also form an obtuse angle fit. To avoid stress concentration at the bending point of the second reed 12, the angle between the bending segment 122 and the pin segment 121 is required to be a rounded transition structure, and the angle between the bending segment 122 and the pushing segment 123 is also required to be a rounded transition structure.

[0092] In the overlapping relationship between the first spring 11 and the second spring 12 of the above-described structure, the angle between the first bent segment 112 and the first pin segment 111 of the first spring 11 is higher than the angle between the second bent segment 122 and the second pin segment 121 of the second spring 12. These two angles form a spacing fit in the height direction. Moreover, the included angle between the second bent segment 122 and the second pin segment 121 of the second spring 12 is greater than the included angle between the first bent segment 112 and the first pin segment 111 of the first spring 11.

[0093] In the overlapping relationship between the first spring 11 and the second spring 12 of the above-described structure, the angle between the second bending segment 122 and the second pushing segment 123 of the second spring 12 basically coincides with the angle between the first bending segment 112 and the first pushing segment 113 of the first spring 11. Thus, an elastic gap 13 is formed between the first spring 11 and the second spring 12 of the overlapping structure spring body 1, which is obliquely arranged and basically has a triangular structure between the pin connection position and the pushing connection position.

[0094] One corner of the aforementioned elastic gap 13 closes due to the overlapping relationship at the angle between the second bent segment 122 and the second pin segment 121 of the second spring 12, and the other corner closes due to the overlapping relationship at the angle between the second bent segment 122 and the second pushing segment 123 of the second spring 12. Based on this approximately triangular elastic gap 13, the second bent segment 122 of the second spring 12 forms a base side of the diagonally arranged elastic gap 13, and the first bent segment 112 of the first spring 11 and the part of the pin segment 111 near the first bent segment 112 form two waist sides of the elastic gap 13. The length of the base side is greater than the length of the two waist sides, and the two waist sides form the obtuse angle fit relationship required above.

[0095] The specific triangular elastic gap 13 formed between the first spring 11 and the second spring 12 in the aforementioned overlapping relationship, due to the waist formed by the bending of the first spring 11, provides clearance space for the second spring 12 when it deforms under thrust during service. This reduces the interference between their structural stresses during compression, resulting in excellent bending deformation performance of the moving spring in the overlapping structure. Simultaneously, the second spring 12 forms a larger bending angle than the first spring 11 at the corresponding bending point, effectively improving the second spring 12's ability to adapt to bending deformation under thrust. It essentially does not cause a reaction force to the first spring 11 during thrust deformation, exhibiting good compliance. This effectively reduces the structural stress of the entire moving spring during thrust deformation, allowing the resulting push-rod relay to achieve the contact closure requirement with a minimal thrust while maintaining the original electromagnetic attraction design. Therefore, while improving current-carrying capacity, it does not significantly increase the electromagnetic attraction of the magnetic circuit, thus meeting high current-carrying technical requirements while minimizing the need for upgrades to the magnetic circuit and overall structural dimensions. Of course, the two waist-edge bend structures of the first spring 11 at the elastic gap 13 will generate a certain rigid support when bending, which enhances the structural rigidity of the first spring 11 compared with the second spring 12, making the protection of contact closure under the action of thrust more stable, and also constraining and limiting the rebound reaction force of the entire moving spring when the elastic force is released, reducing the phenomenon of contact arcing and secondary conduction caused by the rebound reaction force.

[0096] When the reed body 1 with the above structure is used in a relay, it needs to be assembled with a push card, and therefore the reed body 1 has a push connection position - that is, a push card through hole 117.

[0097] In the aforementioned stacked structure of the reed body 1, to accommodate elastic force adjustment, it is not advisable to set the first reed 11 and the second reed 12 to be of equal width. Therefore, the width of the second reed 12 is designed to be smaller than the width of the first reed 11. This allows the second reed 12 to effectively optimize the rebound reaction force of the entire moving reed when the elastic force is released, reducing the technical requirements for the thrust generated by the electromagnetic attraction. Specifically, the difference in width is mainly reflected in the push connection position and the pin connection position of the reed body 1. That is, in the area of ​​the push section used as the forming push card through hole 117, the width of the first reed 11 is greater than the width of the second reed 12. As for the area of ​​the push section used as the forming contact assembly hole, they are set to be of equal width to ensure the stability of the moving contact assembly. In the area of ​​the pin section used as the forming elastic adjustment step 114, the width of the first reed 11 is greater than the width of the second reed 12.

[0098] Therefore, the push-locking holes 117 of the reed body 1 are actually formed on both sides of the width direction of the first reed 11, and are formed with an outward-facing C-shaped contour structure. The push-locking holes 117 on both sides are basically formed with a left-right symmetrical structure, forming a set of elastic adjustment structures. The elastic adjustment steps 114 of the reed body 1 are actually formed on both sides of the width direction of the first reed 11, and are formed with a relatively wider lower side and a relatively narrower upper side. The elastic adjustment steps 114 are specifically located between the pin connection position of the reed body 1 and the elastic gap 13. The elastic adjustment steps 114 on both sides are basically formed with a left-right symmetrical structure, forming a set of elastic adjustment structures.

[0099] The first spring 11 with the push-pull hole 117 and the elastic adjustment step 114 has a relatively concentrated stress because the push-pull hole 117 and the elastic adjustment step 114 are formed in a concave structure at the corresponding edge of the first spring 11. Based on this phenomenon and the aforementioned width difference fit structure, in order to avoid stress concentration in the entire spring body 1 and the occurrence of plastic deformation or even breakage during repeated thrust deformation, a concave structure and a misaligned clearance notch 124 is formed in the edge region of the second spring 12 corresponding to the push card hole 117 on the first spring 11, so that the edge region of the second spring 12 corresponding to the push card hole 117 on the first spring 11 is located inside the corresponding push card hole 117 and forms a gap fit with the corresponding push card hole 117; in the edge region of the second spring 12 corresponding to the elastic adjustment step 114 on the first spring 11, a concave structure and a misaligned clearance notch 125 is formed, so that the edge region of the second spring 12 corresponding to the elastic adjustment step 114 on the first spring 11 is located inside the corresponding elastic adjustment step 114 and forms a gap fit with the corresponding elastic adjustment step 114.

[0100] Regarding the clearance notch 124 on the second spring 12 corresponding to the push card through hole 117, in order to reduce the thrust requirement and improve stress concentration, it is not advisable to form a "larger" push card through hole outline structure. Therefore, the clearance notch 124 on the second spring 12 is designed as a flat-bottomed concave structure, which has corners 1242 on the top and bottom sides of the concave flat bottom 1241 (vertical edge) in the height direction. These two corners 1242 are located on the inner side of the top and bottom sides of the corresponding push card through hole 117 in the height direction. This makes the clearance notch 124 on the second spring 12 fit with the corresponding C-shaped push card through hole 117 on the first spring 11 in a rectangular structure that is approximately a recessed groove.

[0101] Regarding the clearance notch 125 on the second spring 12 corresponding to the elastic adjustment step 114, to improve stress concentration, it is not advisable to form a "larger" elastic adjustment step outline structure. Therefore, the clearance notch 125 on the second spring 12 is designed as a flat-bottomed concave structure, which has two edges 1252 on the top and bottom sides of the concave flat bottom 1251 (vertical edge) in the height direction. These two edges 1252 are located on the inner side of the top and bottom sides of the corresponding elastic adjustment step 114 in the height direction. This makes the clearance notch 125 on the second spring 12 fit with the corresponding stepped elastic adjustment step 114 on the first spring 11 in a rectangular structure that is approximately a recessed groove.

[0102] Based on the above-mentioned reed body 1, in order to reduce the elastic reaction force of the first reed 11 and constrain the rebound reaction force of the moving reed when the elastic force is released, an elastic adjustment hole 115 is provided on the pin section 111 of the first reed 11, located at the top side of the pin connection position in the height direction and basically in the center area of ​​the width; and an elastic adjustment hole 116 is provided on the pushing section 113 of the first reed 11, located at the middle of the pushing through hole 117 in the width direction.

[0103] The reed body 1 of the above structure has a riveting hole at its pin section for connecting the pin 2 – that is, a pin connection position. The riveting hole extends through the first reed 11 and the second reed 12 in the thickness direction. The pin 2 constituting the moving reed is connected to the pin connection position of the reed body 1 in a riveting relationship. It is located on the side of the reed body 1 facing the magnetic circuit part in the relay structure. The bottom end of the pin 2 extends outward from the bottom of the pin section of the reed body 1 in the height direction, and the top end of the pin 2 extends to the elastic gap 13 of the reed body 1, which is located between the heights of the two corners constituting the elastic gap 13 (that is, the area between the bend angle of the first reed 111 bending section 112 and the pin section 111 bending section 122 and the pin section 121 bending section 122 of the second reed 12). Thus, the upper part of pin 2 acts as a backrest and stop for the pin segment of the spring body 1, significantly reducing the spring release reaction force of the spring body 1 due to the stop at the elastic gap 13. This prevents arcing and secondary conduction with the stationary spring assembly caused by excessive spring release reaction force. Of course, to improve the stop rigidity, current carrying capacity, and socket stability of pin 2 on the base, the thickness of pin 2 should be greater than the thickness of spring body 1. It can be formed from a conductive material with higher hardness, so that the higher hardness of pin 2 can stably limit the spring body 1 when assembled on the base.

[0104] Compared to spring bodies with approximately right-angled triangular elastic gaps, approximately semi-circular elastic gaps, or approximately parallelogram elastic gaps, the spring body 1 with the above-mentioned approximately obtuse triangular elastic gap 13 will not experience overlapping or delamination during thrust deformation under the same thrust conditions. Furthermore, it has lower stress at the push card perforation point and requires less thrust from electromagnetic attraction.

[0105] Example 2

[0106] The rest of the contents of this embodiment are the same as those of embodiment 1, except that the contact part of the relay is mainly composed of a moving spring assembly on the base and two sets of stationary spring assemblies.

[0107] See details Figure 7 As shown, the push rod relay of this utility model includes a base 3 and a coil frame, iron core, coil 4, yoke 5, armature 6, push clip 7, moving spring assembly, normally open stationary spring assembly 8 and normally closed stationary spring assembly 9 assembled on the base 3.

[0108] The magnetic circuit, consisting of the iron core, coil 4, yoke 5, and armature 6 arranged on the base 3, forms a left-right arrangement with the contact portion, consisting of the moving spring assembly, normally open stationary spring assembly 8, and normally closed stationary spring assembly 9, also arranged on the base 3. In the aforementioned contact portion structure, the moving spring assembly is positioned between the normally closed stationary spring assembly 9 and the normally open stationary spring assembly 8. The normally closed stationary spring assembly 9 is positioned closer to the magnetic circuit on the base 3, while the normally open stationary spring assembly 8 is positioned further away. In the initial state, the moving contact of the moving spring assembly engages with the stationary contact of the normally closed stationary spring assembly 9. When the magnetic circuit reaches the designed magnetic field, the pusher 7 causes the moving spring assembly to deform, separating the normally closed stationary spring assembly 9 and engaging with the normally open stationary spring assembly 8.

[0109] The pusher 7 is positioned between the armature 6 and the moving spring assembly. The armature 6, which flips on the yoke 5, pushes the pusher 7 to make the normally open contact part conductive, or the normally open contact part, which is disconnected, pushes the pusher 7 to make the armature 6 flip on the yoke 5. Based on the arrangement of the normally closed stationary spring assembly 9 and the normally open stationary spring assembly 8 on the left and right sides of the moving spring assembly, when the pusher 7 is pushed and engaged with the moving spring assembly, it needs to pass through the normally closed stationary spring assembly 9 in the pushing direction. Therefore, the spring width of the normally closed stationary spring assembly 9 is smaller than the forked width of the pusher 7 at the end that contacts the moving spring assembly, and it is located within the forked space of the pusher 7 at the end that contacts the moving spring assembly. Furthermore, the forked depth of the pusher at the end that contacts the moving spring assembly is such that when the pusher 7 travels to its maximum stroke in the pushing direction, it basically does not touch the normally closed stationary spring assembly 9.

[0110] Example 3

[0111] The rest of the content of this embodiment is the same as that of embodiment 1, except that:

[0112] The pins are connected to the lead section of the reed body, and their tips extend to the lower side of the elastic gap of the reed body, with a height of about 2mm between the pins and the lowest point of the elastic gap.

[0113] Example 4

[0114] The rest of the content of this embodiment is the same as that of embodiment 1, except that:

[0115] The pins are connected to the lead section of the reed body, and their tips extend to the lower side of the elastic gap of the reed body, with a height of about 1 mm between them and the lowest point of the elastic gap.

[0116] Example 5

[0117] The rest of the content of this embodiment is the same as that of embodiment 1, except that:

[0118] The second reed is designed with a C-shaped profile at the lead segment, which surrounds the inner and outer sides of the elastic adjustment step.

[0119] Example 6

[0120] The rest of the content of this embodiment is the same as that of embodiment 1, except that:

[0121] Remove the first and / or second elastic adjustment holes on the first reed.

[0122] Of course, its effect of adjusting the elastic properties of the first reed will also be eliminated by removing it.

[0123] Example 7

[0124] The rest of the content of this embodiment is the same as that of embodiment 1, except that:

[0125] The portion of the first reed that forms the elastic gap is formed in a C-shaped semi-circular structure; the second reed is formed in a straight sheet structure, thus forming the elastic gap structure of the moving reed as described in the background section above.

[0126] Of course, this embodiment still has the performance of improving stress concentration and certain elastic adjustment brought about by the clearance gap, but it also eliminates the technical advantages of the triangular elastic gap.

[0127] Example 8

[0128] The rest of the content of this embodiment is the same as that of embodiment 1, except that:

[0129] The angle between the second bent section and the second pushing section of the second spring and the angle between the first bent section and the first pushing section of the first spring are arranged in a height-direction gap to form a gap fit. The height of the gap fit is basically corresponding to the gap fit height between the "angle between the second bent section and the second pushing section" and the "angle between the first bent section and the first pushing section" described in Embodiment 1, so that the elastic gap between the first spring and the second spring forms an approximately parallelogram structure.

[0130] Of course, this embodiment still has the performance of improving stress concentration and certain elastic adjustment brought about by the clearance gap, but it also eliminates the technical advantages of the triangular elastic gap.

[0131] Example 9

[0132] The other contents of this embodiment are the same as those of Embodiment 1 or Embodiment 2, except that the spring body of the moving spring assembly has a three-layer stacked structure.

[0133] See Figure 8 As shown (horizontal perspective, see [reference]) Figure 1 , Figure 2 and Figure 3 As shown, the spring body 1 of the moving spring assembly is a stacked structure of a first spring 11, a second spring 12, and a third spring 14 in the thickness direction. The first spring 11 is located on the side adjacent to the magnetic circuit portion in the relay structure. The third spring 14 is located on the side adjacent to the normally open stationary spring assembly in the relay structure. The second spring 12 is located between the first spring 11 and the third spring 13.

[0134] In such Figure 8 In the three-piece stacked structure shown, the third spring 14 has a structure in the horizontal width direction that is basically the same as the second spring 12 (the main difference lies in the triangular elastic gap formed at the bend). The first spring 11 retains the same structure as the first spring 11 in Embodiment 1. That is to say, the second spring 12 and the third spring 14 are more like two springs with basically the same structure stacked in the thickness direction. Thus, the first spring 11, located near the magnetic circuit portion in the relay structure, has a push-card through hole 117 and an elastic adjustment step 114, while the second spring 12 and the third spring 13 have the same position and structure of clearance structures - namely clearance notch one 124 / clearance notch two 125.

[0135] In such Figure 8In the three-piece stacked structure shown, the first spring 11 and the second spring 12 are arranged adjacently, forming a specific triangular elastic gap 13 between them; the second spring 12 and the third spring 14 are arranged adjacently, forming a specific triangular elastic gap 13 between them. Therefore, referring to Embodiment 1, based on the specific triangular elastic gap 13, the first spring 11, the second spring 12, and the third spring 14 are divided into two groups in the thickness direction according to their adjacent positions. That is, the first group of adjacent positions is formed by the stacking of the first spring 11 and the second spring 12, and the second group of adjacent positions is formed by the stacking of the second spring 12 and the third spring 13.

[0136] According to the above grouping, the arrangement of the first reed 11 and the second reed 12 in the first group of adjacent positions in the relay structure is such that the first reed 11 is arranged relatively close to the magnetic circuit part - that is, the reed close to the magnetic circuit part, and the second reed 12 is arranged relatively far from the magnetic circuit part and close to the normally open stationary spring assembly - that is, the reed close to the normally open stationary spring assembly. The arrangement structure of the first reed 11 and the second reed 12, referring to the arrangement structure of the first reed (that is, the first reed 11 corresponding to the first group of adjacent positions) and the second reed (that is, the second reed 12 corresponding to the first group of adjacent positions) in Embodiment 1, constitutes a specific triangular elastic gap 13 (excluding the width difference structure and the clearance structure).

[0137] According to the above grouping, the second reed 12 and the third reed 14 in the second group of adjacent positions are arranged in the relay structure as follows: the second reed 12 is arranged relatively close to the magnetic circuit part - that is, the reed close to the magnetic circuit part; the third reed 14 is arranged relatively far from the magnetic circuit part and close to the normally open stationary spring assembly - that is, the reed close to the normally open stationary spring assembly. The second reed 12 and the third reed 14, referring to the arrangement structure of the first reed (that is, the second reed 12 corresponding to the second group of adjacent positions) and the second reed (that is, the third reed 14 corresponding to the second group of adjacent positions) in Embodiment 1, constitute a specific triangular elastic gap 13 (excluding the width difference structure and the clearance structure).

[0138] The overlapping structure of the spring body 1, consisting of the first spring 11, the second spring 12, and the third spring 14 arranged in adjacent positions as described above, forms two layered, approximately triangular elastic gaps 13 in the region between the pin connection position and the push connection position. The bent structure of the first spring 11 forms the two sides of the first triangular elastic gap 13, and the bent structure of the second spring 12 forms the base of the first triangular elastic gap 13. The bent structure of the second spring 12 forms the two sides of the second triangular elastic gap 13, and the bent structure of the third spring 14 forms the base of the second triangular elastic gap 13. This results in the base length of the second triangular elastic gap 13 being greater than the base length of the first triangular elastic gap 13; and the included angle between the apex angles of the two sides of the second triangular elastic gap 13 being greater than the included angle between the apex angles of the two sides of the first triangular elastic gap 13. The two triangular elastic gaps 13 tend to be arranged at the same height in the pushing direction, but the two triangular elastic gaps are different in the height direction. The closing angle of the second triangular elastic gap 13 in the height direction is lower than that of the first triangular elastic gap 13 in the height direction.

[0139] The above embodiments are only used to illustrate the present invention and are not intended to limit it. Of course, in terms of effectiveness, Embodiment 1 is the best implementation of the present invention.

[0140] 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 laminated moving reed having a reed body (1) characterized in that: the reed body (1) comprises a plurality of reeds laminated together in a thickness direction; in a relay structure, the reeds of the reed body (1) are arranged in sequence according to their arrangement positions from near to far of a magnetic circuit portion, and the reed closest to the magnetic circuit portion is a first reed (11); the first reed (11) has at least one set of concave structures at both side edges in a width direction, which are used to adjust the elasticity of the first reed (11); and the reeds other than the first reed (11) in the reed body (1) have concave notches at edge regions corresponding to the concave structures of the first reed (11), which are concave-formed inside the corresponding concave structures and staggered with the profiles of the corresponding concave structures.

2. The laminated moving reed according to claim 1, characterized in that: the concave structures at both side edges in the width direction of the first reed (11) are push card perforations (117) formed at a push section one (113) edge of the first reed (11), and each of the push card perforations (117) is a C-shaped profile structure with an opening facing outward; and the push section edges of the reeds other than the first reed (11) have concave-formed notches one (124) staggered with the push card perforations (117), and the profile edges of the notches one (124) are spaced apart from the profile edges of the corresponding push card perforations (117).

3. The laminated moving reed according to claim 2, characterized in that: the notches one (124) are flat-bottom concave structures having corner one (1242) at both sides of a top and a bottom in a height direction of a concave flat bottom one (1241), and the two corner ones (1242) are inside the corresponding push card perforations (117) at both sides of a top and a bottom in the height direction.

4. The laminated moving reed according to claim 1, characterized in that: the concave structures at both side edges in the width direction of the first reed (11) are elastic adjustment steps (114) formed at a pin section one (111) edge of the first reed (11), and each of the elastic adjustment steps (114) is a step structure with a wide bottom side and a narrow top side above a pin connection position; and the pin section edges of the reeds other than the first reed (11) have concave-formed notches two (125) staggered with the elastic adjustment steps (114), and the profile edges of the notches two (125) are spaced apart from the profile edges of the corresponding elastic adjustment steps (114).

5. The laminated moving reed according to claim 4, characterized in that: the notches two (125) are flat-bottom concave structures having corner two (1252) at both sides of a top and a bottom in a height direction of a concave flat bottom two (1251), and the two corner two (1252) are inside the corresponding elastic adjustment steps (114) at both sides of a top and a bottom in the height direction.

6. The laminated moving reed according to claim 1, 2 or 4, characterized in that: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ The width of the rest of the reeds, except the first reed (11), at least at the push section and the pin section, is smaller than the width of the first reed (11) at the corresponding position.

7. The laminated reed according to claim 1, 2 or 4, characterized in that: The pin section one (111) of the first reed (11) is provided with an elastic adjusting hole one (115) at the top side of the pin connecting position in the height direction and at the center in the width direction; And / or, the push section one (113) of the first reed (11) is provided with an elastic adjusting hole two (116) at the middle of the push card through hole (117) in the width direction.

8. The laminated reed according to claim 1, characterized in that: In the laminated structure of the reed body (1), between two reeds arranged adjacently, there is an elastic gap (13) in a triangular structure between the pin section and the push section; And, between the two reeds arranged adjacently, the reed close to the normally open static spring assembly constitutes one side of the elastic gap (13), the reed close to the magnetic circuit part constitutes two sides of the elastic gap (13), and the length of the one side is greater than the length of the two sides.

9. The laminated reed according to claim 8, characterized in that: The reed close to the magnetic circuit part is integrally formed by the pin section, the bending section and the push section, the bending section of the reed close to the magnetic circuit part is a diagonal bending transition structure of the pin section close to the magnetic circuit part and the push section away from the magnetic circuit part in the structure of the relay, the bending section of the reed close to the magnetic circuit part and the pin section constitute an obtuse angle matching relationship, and the bending section of the reed close to the magnetic circuit part and the push section constitute an obtuse angle matching relationship; And, in the laminated relationship of the two reeds arranged adjacently, the angle position between the bending section of the reed close to the magnetic circuit part and the pin section is matched with the angle position between the bending section of the reed close to the normally open static spring assembly and the pin section.

10. The laminated reed according to claim 9, characterized in that: The angle between the bending section of the reed close to the magnetic circuit part and the pin section is a circular arc transition structure; The angle between the bending section of the reed close to the magnetic circuit part and the push section is a circular arc transition structure.

11. The laminated reed according to claim 9 or 10, characterized in that: The included angle of the angle between the bending section of the reed close to the magnetic circuit part and the pin section is 110-150°.

12. The laminated reed according to claim 8, characterized in that: The reed close to the normally open static spring assembly is integrally formed by the pin section, the bending section and the push section, the bending section of the reed close to the normally open static spring assembly is a diagonal bending transition structure of the pin section close to the magnetic circuit part and the push section away from the magnetic circuit part in the structure of the relay, the bending section of the reed close to the normally open static spring assembly and the pin section constitute an obtuse angle matching relationship, and the bending section of the reed close to the normally open static spring assembly and the push section constitute an obtuse angle matching relationship; And the included angle between the bending section and the pin section of the spring leaf close to the normally open reed assembly is greater than the included angle between the bending section and the pin section of the spring leaf close to the magnetic circuit part.

13. The laminated moving spring leaf according to claim 8, 9 or 12, characterized in that: In the overlapping relationship of two spring leaves arranged in adjacent positions, one angle of the elastic gap (13) is closed at the bending angle between the bending section and the pin section of the spring leaf close to the normally open reed assembly, and the other angle of the elastic gap (13) is closed at the bending angle between the bending section and the pushing section of the spring leaf close to the normally open reed assembly.

14. The laminated moving spring leaf according to claim 1 or 8, characterized in that: The spring leaf body (1) is composed of the first spring leaf (11) and the second spring leaf (12) in the thickness direction; In the relay structure, the first spring leaf (11) is the spring leaf close to the magnetic circuit part, and the second spring leaf (12) is the spring leaf close to the normally open reed assembly.

15. The laminated moving spring leaf according to claim 14, characterized in that: The first spring leaf (11) and the second spring leaf (12) of the spring leaf body (1) are integrally bent and overlapped, and the bent position of the overlapping is at the top of the contact connection position in the height direction.

16. The laminated moving spring leaf according to claim 1 or 8, characterized in that: The spring leaf body (1) is combined and connected with the independently formed pin (2) at the pin connection position; The pin (2) connected to the position extends outward from the bottom of the pin section of the spring leaf body (1) in the height direction.

17. The laminated moving spring leaf according to claim 16, characterized in that: The spring leaf body (1) and the pin (2) are combined and connected in a riveting relationship, and the pin (2) is arranged on the side of the spring leaf body (1) facing the magnetic circuit part in the relay structure, and the thickness of the pin (2) is greater than the thickness of the spring leaf body (1); In the assembly relationship with the base of the relay, the pin (2) is used for assembly and fixation in the base.

18. The laminated moving spring leaf according to claim 17, characterized in that: One end of the pin (2) extends to the elastic gap (13) of the spring leaf body (1).

19. The laminated moving spring leaf according to claim 18, characterized in that: The end of the pin (2) at the elastic gap (13) is at most 2mm in height from the lowest corner position of the lowest elastic gap.

20. A push rod type relay, comprising a magnetic circuit part, a contact part, and a pushing card between the magnetic circuit part and the contact part, characterized in that: The moving spring assembly constituting the contact part has the laminated moving spring leaf according to any one of claims 1 to 19.

21. The push rod type relay according to claim 20, characterized in that: The magnetic circuit part comprises a coil holder, a core, a coil (4), a yoke (5) and an armature (6) assembled on a base (3); ​ The contact part comprises a moving spring assembly and a normally open static spring assembly (8) assembled on the base (3); or the contact part comprises a normally closed static spring assembly (9), a moving spring assembly and a normally open static spring assembly (8) assembled on the base (3); The magnetic circuit part and the contact part are arranged in left and right positions on the base (3) through a push card (7); The push card (7) is between the armature (6) and the moving spring assembly.

Images