A moving contact of a high-frequency relay and a high-frequency relay

Abstract

The utility model discloses a kind of moving spring contact piece and high-frequency relay of high-frequency relay, moving spring contact piece includes moving spring leaf and moving contact, moving contact is fixed with moving spring leaf and forms at least one recess with opening away from moving spring leaf;High-frequency relay includes the above moving spring contact piece.The utility model can reduce the overall size of moving spring leaf, reduce the capacitance effect between the part of metal moving spring leaf fixed moving contact portion and static spring fixed static contact portion, to improve signal transmission quality.

Description

Technical Field

[0001] This utility model relates to the field of relays, specifically to a moving spring contact of a high-frequency relay and a high-frequency relay. Background Technology

[0002] In modern applications such as communications, test and measurement, aerospace, and high-speed data transmission, the demand for high-frequency signal switching devices is increasing. Relays, as key components in electronic circuits for signal switching and isolation, directly affect the signal integrity, isolation, and reliability of the entire system under high-frequency conditions.

[0003] High-frequency relays generally consist of a fixed part and a swinging part. The fixed part includes a base integrally formed by injection molding, a coil assembly, a stationary spring, and a soldering part. The coil assembly includes an iron core and a coil. The coil can be directly wound around the outer circumference of the iron core, or indirectly wound around the outer circumference of the iron core through a coil frame (usually made of plastic) injection-molded onto the outer side of the iron core. The iron core has two magnetic pole surfaces exposed above the upper end of the base. The stationary contact of the stationary spring and the contact fixing part fixed to the stationary contact are exposed above the upper end of the base. The soldering part forms a soldering station exposed above the upper end of the base. The swinging part moves relative to the fixed part. The swinging part is integrally formed by injection molding an armature and a moving spring. The two ends of the armature have two attraction parts corresponding to the magnetic pole surfaces. The moving spring has a moving contact corresponding to the stationary contact. The swinging part also has a fixing part fixed to the soldering station. The swinging part forms a rotation fulcrum with the support part of the base. The coil assembly drives the armature to swing back and forth, causing the moving and stationary contacts to close or open. In practice, it has been found that the signal transmission quality of this type of high-frequency relay is poor. Utility Model Content

[0004] The purpose of this utility model is to overcome the above-mentioned defects or problems in the background art and to provide a moving spring contact of a high-frequency relay and a high-frequency relay, which has good signal transmission quality.

[0005] To achieve the above objectives, the present invention and its preferred embodiments adopt the following technical solutions, but the embodiments are not limited to the following solutions: Technical solution one and its related embodiments involve a moving spring contact of a high-frequency relay, including a moving spring and a moving contact, wherein the moving contact is fixedly connected to the moving spring and forms at least one groove with an opening opposite to the moving spring.

[0006] Based on technical solution one, there is also technical solution two. In technical solution two and its related embodiments, the number of grooves is one, and the moving contact is mirror symmetrical.

[0007] Based on technical solution two, there is also technical solution three. In technical solution three and its related embodiments, the groove extends along the length direction of the moving spring.

[0008] Based on technical solution one, there is also technical solution four. In technical solution four and its related embodiments, the width of the groove gradually increases along the direction close to its opening.

[0009] Based on technical solution one, there is also technical solution five. In technical solution five and its related embodiments, the depth of the groove is 1 / 3 to 2 / 3 of the thickness of the moving contact.

[0010] Based on technical solution one, there is also technical solution six. In technical solution six and its related embodiments, the moving contact is welded to the moving spring.

[0011] Technical solution seven relates to a high-frequency relay, including a fixed part and a swinging part that swings relative to the fixed part on a first plane, characterized in that the fixed part is provided with a stationary contact, and the swinging part is provided with a moving spring contact as described in any one of technical solutions one to six, wherein the moving contact corresponds to the stationary contact.

[0012] Based on technical solution seven, there is also technical solution eight. In technical solution eight and its related embodiments, the fixed part is further provided with a contact fixing part fixed to the stationary contact, and the size of the contact fixing part corresponds to the size of the part of the moving spring corresponding to the moving contact.

[0013] Based on technical solution seven, technical solution nine is also provided. In technical solution nine and its related embodiments, the first plane is perpendicular to the X-axis direction; the fixed part includes a base, a coil assembly, and a stationary spring part that are injection molded as one piece. The coil assembly is provided with a coil end. The stationary spring part includes at least one stationary spring assembly. Each stationary spring assembly is provided with a normally closed stationary contact, a soldering station, and a normally open stationary contact arranged sequentially along the Y-axis direction, as well as a normally closed end, a common end, and a normally open end of the stationary spring corresponding to the normally closed stationary contact, the soldering station, and the normally open stationary contact, respectively; one of the coil ends, the normally closed end, the common end, and the normally open end of the stationary spring are all exposed on one side of the base along the X-axis direction, and the normally closed end of the stationary spring is closest to the coil end; The normally closed end of the stationary spring is provided with a first section extending along the Z-axis and connected to the normally closed stationary contact, a second section extending along the Z-axis and extending out of the base, and a third section connecting the first section and the second section. The second section is further away from the coil end than the first section. The third section is at least partially inclined relative to the Z-axis.

[0014] Based on technical solution nine, there is also technical solution ten. In technical solution ten and its related embodiments, the third segment includes an inclined segment and a horizontal segment. The length of the inclined segment is greater than the length of the horizontal segment. The two ends of the inclined segment are respectively connected to the first segment and the horizontal segment. The end of the horizontal segment away from the second segment is connected to the inclined segment.

[0015] As can be seen from the above description of the present invention and its preferred embodiments, compared with the prior art, the technical solution of the present invention and its preferred embodiments have the following beneficial effects due to the adoption of the following technical means: Through continuous observation, experimentation, and research, the applicant has determined that the reason for the technical problem of "poor high-frequency signal quality in existing relays" lies in the fact that, in order to improve contact reliability, existing technologies mainly employ a bifurcated moving spring contact structure (i.e., the moving spring has two connecting arms, each fixedly connected to a moving contact). However, this bifurcated moving spring contact brings the following technical problems and defects in practical applications: Because the moving spring is designed as a bifurcated structure, in order to facilitate welding of the moving contact, the moving spring needs to extend beyond the edge of the moving contact to provide sufficient layout space for the two connecting arms, resulting in a larger size of the moving spring along its width. Simultaneously, to avoid interference between the connecting arms of the two moving contacts during movement, a certain gap must be maintained between the two connecting arms, which further increases the overall size of the moving spring in its width direction. Correspondingly, the length of the stationary contact along the width of the moving spring also needs to be increased; otherwise, contact misalignment is likely to occur, affecting contact reliability. Furthermore, increasing the length of the stationary contact leads to an increase in the area of ​​the matching stationary spring. These changes enhance the capacitive effect between the portion of the metal moving spring that fixes the moving contact and the portion of the stationary spring that fixes the stationary contact, which is detrimental to achieving overall impedance matching in the high-frequency relay. Under high-frequency signal conditions (especially 5GHz and above), the intensified capacitive effect will also cause more high-frequency signal leakage, resulting in decreased signal isolation and ultimately reducing the signal transmission quality of the high-frequency relay.

[0016] In technical solution one and its preferred embodiments, the moving contact is fixedly connected to the moving spring and forms at least one groove with an opening facing away from the moving spring, dividing a single moving contact into at least two independent contact areas connected by a single moving spring. The moving spring design eliminates the need for bifurcations or reserved bifurcation space, allowing for a smaller width. The length of the paired stationary contact and the area of ​​the stationary spring can also be reduced, thereby decreasing the relative area of ​​the moving and stationary springs, thus reducing capacitance, signal leakage, and impedance matching, ultimately improving signal transmission quality. Furthermore, the at least two independent contact areas operate independently during contact switching. When closed, multi-contact contact is achieved, ensuring reliable contact continuity. When open, each area separates synchronously, dispersing arc energy to each contact point, reducing the risk of single-point ablation and extending contact life. In addition, the above configuration eliminates the need for a bifurcated structure on the moving spring, allowing for a smaller width (avoiding the extra layout space required for traditional bifurcated contacts), reducing material usage, and lowering the difficulty of stamping and injection molding (no bifurcated sharp corners, improving mold life), while ensuring high-frequency signal transmission quality.

[0017] In technical solution two and its preferred embodiments, the mirror symmetry structure ensures that when the moving contact is closed, the two contact areas (separated by grooves) corresponding to the stationary contact are evenly distributed with force. The contact pressure and contact area on both sides of the axis of symmetry are completely consistent, avoiding excessive local pressure (easy to burn out) or insufficient local pressure (poor contact) caused by structural asymmetry, which significantly improves the stability and consistency of contact conduction during high-frequency switching. The single groove combined with the mirror symmetry design allows the arc to spread synchronously to both sides along the axis of symmetry when disconnected, avoiding the energy concentration of the arc on one side that may be caused by traditional multi-groove or asymmetrical structures. The contact separation function can be achieved by processing only one groove, resulting in lower processing costs.

[0018] In technical solution three and its preferred embodiments, when the moving contact closes with the stationary contact, the end of the moving spring will partially lift up, and the groove extends along the length direction of the moving spring. Compared with the groove extending along the width direction of the moving spring (the contact area closer to the end of the moving spring is smaller due to the lifting, and the contact area further away from the end of the moving spring is larger), it is more conducive to making the contact area of ​​the two contact areas (separated by the groove) corresponding to the stationary contact consistent when the moving spring is elastically deformed, and the force is evenly distributed, which significantly improves the stability and consistency of contact conduction during high-frequency switching.

[0019] In technical solution four and its preferred embodiments, the width of the groove gradually increases towards its opening, so that when disconnected, the electric arc can be more evenly distributed to each independent contact area along the direction of the gradually expanding width, further reducing the concentration of electric arc energy in a single contact area and reducing the risk of contact ablation; at the same time, the structure with gradually increasing width optimizes the contact pressure distribution between the moving contact and the stationary contact, making the contact pressure of each contact area more balanced when closed, the contact resistance fluctuation smaller, and improving the stability and consistency of signal conduction.

[0020] In technical solution five and its preferred embodiments, the depth of the groove is 1 / 3 to 2 / 3 of the thickness of the moving contact. On the one hand, the depth is not less than 1 / 3 of the thickness of the moving contact, which can ensure that the moving contact is effectively divided into at least two independent contact areas. During the contact switching process, the independent areas are not easily affected by motion interference, thus affecting the stability of the action. When closed, multiple contacts are synchronously contacted to improve the reliability of conduction. At the same time, the effective contact area between the moving contact and the stationary contact can be reduced, avoiding the aggravation of the capacitance effect due to excessive contact area, and further reducing the risk of high-frequency signal leakage. On the other hand, the depth does not exceed 2 / 3 of the thickness of the moving contact, preventing the mechanical strength of the moving contact from decreasing, deforming or breaking due to excessive groove depth, thus ensuring the strength of the moving contact.

[0021] In technical solution six and its preferred embodiments, the moving contact is welded to the moving spring, resulting in a simple structure that is easy to install.

[0022] Technical solution seven has the technical advantages of any one of technical solutions one through six.

[0023] In technical solution eight and its preferred embodiments, the size of the contact fixing part corresponds to the size of the part of the moving spring corresponding to the moving contact. Size matching avoids the contact fixing part being too large (leading to an increase in ineffective capacitance) or too small (leading to insufficient contact and increased resistance), ensuring that the effective contact area is maximized and the average contact resistance is reduced.

[0024] In technical solution nine and its preferred embodiments, the structural arrangement of the normally closed end of the stationary spring, especially the arrangement of the third segment, can be calculated based on different angle values ​​according to the actual impedance matching effect. This minimizes the change in the cross-sectional area of ​​the stationary spring caused by the corner transition, thereby improving impedance discontinuity and enhancing the quality of high-frequency signal transmission. Specifically, by setting an oblique third segment on the normally closed end of the stationary spring instead of a horizontal or vertical structure, the physical length of the metal conductor can be shortened. Shortening the length of the metal conductor has the following technical advantages: First, it can reduce conductor loss and dielectric loss caused by the material itself during high-frequency signal transmission, thereby reducing signal loss; second, it can reduce the inductive effect of the conductor when transmitting high-frequency signals, thereby reducing signal reflection and distortion; third, it can increase the shortest distance between the normally closed end and the coil end, improving the insulation capability between the relay control circuit and the load circuit.

[0025] In technical solution ten and its preferred embodiments, the length of the inclined segment is greater than the length of the horizontal segment, which can further shorten the physical length of the metal conductor. Attached Figure Description

[0026] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a three-dimensional exploded view of the high-frequency relay according to an embodiment of the present invention; Figure 2 for Figure 1 An enlarged schematic diagram of part A; Figure 3 This is a schematic diagram of the stationary spring portion and the coil end in an embodiment of the present invention; Figure 4 This is a schematic diagram of the swinging part in an embodiment of the present invention; Figure 5 This is a schematic diagram of some of the moving spring contacts and stationary contacts in an embodiment of this utility model.

[0028] Explanation of key figure labels: Fixed part 100; base 10; coil assembly 20; coil end 21; stationary spring part 30; normally open stationary contact 31; soldering station 32; normally closed stationary contact 33; normally open end of stationary spring 34; common end of stationary spring 35; normally closed end of stationary spring 36; first section 361; second section 362; third section 363; inclined section 3631; horizontal section 3632; contact fixing part 37; outer shell 40; shielding cover 50; swing part 200; moving spring contact 60; moving spring plate 61; moving contact 62; groove 621; normally open moving contact 622; normally closed moving contact 623; connecting part 63; armature 70; insulator 80. Detailed Implementation The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are preferred embodiments of the present utility model and should not be considered as excluding other embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0029] Unless otherwise expressly defined, the use of terms such as "first," "second," or "third" in the claims, description, and drawings of this utility model is for distinguishing different objects and not for describing a specific order.

[0030] Unless otherwise expressly defined, in the claims, description, and accompanying drawings of this utility model, the use of directional terms such as "center," "lateral," "longitudinal," "horizontal," "vertical," "top," "bottom," "inner," "outer," "upper," "lower," "front," "rear," "left," "right," "clockwise," and "counterclockwise" to indicate orientation or positional relationships is based on the orientation and positional relationships shown in the accompanying drawings and is only for the convenience of describing this utility model and simplifying the description. It does not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the specific protection scope of this utility model.

[0031] Unless otherwise expressly defined, the terms "fixed connection" or "fixed connection" used in the claims, description and drawings of this utility model shall be interpreted broadly to refer to any connection in which there is no displacement or relative rotation relationship between the two parties, including non-removable fixed connection, detachable fixed connection, integral connection and fixed connection through other devices or components.

[0032] In the claims, description and accompanying drawings of this utility model, the terms "comprising", "having", and variations thereof are used to mean "including but not limited to".

[0033] In the claims and the description other than the embodiments, the terms "X-axis direction," "Y-axis direction," and "Z-axis direction" only refer to a feature having one of the aforementioned directions being perpendicular to a feature having another direction, and do not require that they be implemented according to the "X-axis direction," "Y-axis direction," and "Z-axis direction" described in the embodiments. In the embodiments, the X-axis direction is perpendicular to both the Y-axis direction and the Z-axis direction. The X-axis direction can be divided into left and right, the Y-axis direction into front and back, and the Z-axis direction into up and down.

[0034] See Figure 1 , Figure 1 A high-frequency relay is shown, including a fixed portion 100 and an oscillating portion 200 that oscillates relative to the fixed portion 100 on a first plane. The first plane is the plane containing the motion trajectory of the oscillating portion 200 and is an abstract reference plane, perpendicular to the oscillation axis of the oscillating portion 200. Here, oscillation means that the oscillating portion 200 has no motion component on the plane containing the oscillation axis, or only a small motion component caused by manufacturing / assembly errors. In this embodiment, the first plane is perpendicular to the X-axis direction.

[0035] The fixed part 100 includes a base 10, a coil assembly 20 and a stationary spring part 30, which are integrally formed by injection molding. The base 10 is generally rectangular, with its length direction in the Y-axis direction, its width direction in the X-axis direction and its height direction in the Z-axis direction.

[0036] The coil assembly 20 is a prior art technology. The coil assembly 20 and the base 10 are injection molded as one piece. For example, the coil assembly 20 includes a coil frame, a U-shaped iron core and enameled wire. The coil frame includes a winding shaft extending along the Y-axis and baffles respectively wound around the two ends of the winding shaft. The coil assembly 20 is also provided with two coil ends 21. Both coil ends 21 extend out of the bottom surface of the base 10. The U-shaped iron core passes through the coil frame and its two ends extend out of the two baffles along the Z-axis. The part of the U-shaped iron core extending out of the baffles forms a magnetic pole surface (not shown in the figure).

[0037] See Figure 1-3The stationary spring section 30 includes at least one stationary spring assembly. Each stationary spring assembly has a normally open stationary contact 31, a soldering station 32, and a normally closed stationary contact 33 arranged sequentially along the Y-axis. It also includes a normally open end 34 corresponding to the normally open stationary contact 31, a common end 35 corresponding to the soldering station 32, and a normally closed end 36 corresponding to the normally closed stationary contact 33. The normally open end 34, the common end 35, and the normally closed end 36 all extend beyond the bottom surface of the base 10. One of the coil ends 21 is connected to the stationary spring... The closed end 36, the common end 35 of the stationary spring, and the normally open end 34 of the stationary spring are all exposed on one side of the base 10 along the X-axis direction, and the normally closed end 36 of the stationary spring is closest to the coil end 21. In this embodiment, the stationary spring portion 30 includes two stationary spring assemblies arranged along the X-axis direction. The two stationary spring assemblies are symmetrically arranged, and correspondingly, the normally closed end 36, the common end 35, and the normally open end 34 of the stationary spring of the other coil end 21 and the other stationary spring assembly are all exposed on another side of the base 10 along the X-axis direction. In this embodiment, see... Figure 3 Each stationary spring assembly is also provided with a contact fixing part 37 that is fixed to each stationary contact. Each contact fixing part 37 is also exposed at the upper end of the base 10 and fixed to each stationary contact. The size of the contact fixing part 37 corresponds to the size of the portion of the moving spring 61 corresponding to the moving contact 62 described below.

[0038] See Figure 3 The normally closed end 36 of the stationary spring has a first segment 361 extending along the Z-axis direction connected to the normally closed stationary contact 33, a second segment 362 extending along the Z-axis direction extending out of the base 10, and a third segment 363 connecting the first segment 361 and the second segment 362. The second segment 362 is further away from the coil end 21 than the first segment 361. The third segment 363 is at least partially inclined relative to the Z-axis direction. The third segment 363 includes an inclined segment 3631 and a horizontal segment 3632. The length of the inclined segment 3631 is greater than the length of the horizontal segment 3632. The two ends of the inclined segment 3631 are respectively connected to the first segment 361 and the horizontal segment 3632. The end of the horizontal segment 3632 away from the second segment 362 is connected to the inclined segment 3631. For example, the included angle between the inclined segment 3631 and the horizontal segment 3632 is 120°-160°. The common end 35 of the stationary spring and the normally open end 34 of the stationary spring are generally Z-shaped.

[0039] In practical applications, the base 10, coil assembly 20, and stationary spring portion 30 are injection molded, with two normally open stationary contacts 31, two normally closed stationary contacts 33, and soldering stations 32 exposed at the upper end of the base 10. The two normally open stationary contacts 31 are positioned on the same side, the two normally closed stationary contacts 33 are positioned on the same side, and the two soldering stations 32 are located in the middle of the base 10 and close to both sides of the base 10 along the X-axis. The two magnetic pole surfaces are located between the two stationary spring assemblies along the X-axis. The coil end 21, the normally open end 34 of the stationary spring, the common end 35 of the stationary spring, and the normally closed end 36 of the stationary spring all extend beyond the bottom surface of the base 10, thereby fixing the coil assembly 20 and the stationary spring portion 30 relative to the base 10. After injection molding, the base 10 also has a mounting groove (not shown in the figure), located between the two magnetic pole surfaces along the Y-axis, for at least partially accommodating the swing portion 200.

[0040] In practical applications, see Figure 1 The fixed part 100 also includes a housing 40 and a shielding cover 50 that covers the housing 40 along the Z-axis. The housing 40 covers the base 10 along the Z-axis and forms an accommodating space with the upper end of the base 10. Both the base 10 and the housing 40 are made of plastic. The swinging part 200 swings relative to the base 10 within the accommodating space, and the shielding cover 50 covers the housing 40 along the Z-axis.

[0041] The oscillating part 200 includes a number of moving spring contacts 60, armatures 70, magnets (not shown in the figure), and insulators 80, which are equal in number to the number of stationary contacts. The moving spring contacts 60, armatures 70, and magnets are connected as one unit by the insulators 80. The magnets are closer to the coil assembly 20 than the armatures 70. The armatures 70 are driven by the coil assembly 20 to oscillate back and forth, causing the normally open moving contact 622 to close or open with the normally open stationary contact 31, and the normally closed moving contact 623 to close or open with the normally closed stationary contact 33.

[0042] See Figure 4-5 The movable spring contact 60 includes a movable spring plate 61 and a movable contact 62. The movable contact 62 is fixedly connected to the movable spring plate 61 and forms at least one groove 621 with an opening opposite to the movable spring plate 61. In this embodiment, preferably, the movable contact 62 is welded to the movable spring plate 61. The number of grooves 621 is one. The movable contact 62 is mirror symmetrical. The groove 621 extends along the length direction of the movable spring plate 61. The width of the groove 621 gradually increases along the direction close to its opening. The depth of the groove 621 is 1 / 3 to 2 / 3 of the thickness of the movable contact 62.

[0043] In practical applications, each moving spring contact 60 includes two moving contacts 62, see [link / reference]. Figure 1-2 One of them is a normally open moving contact 622, and the other is a normally closed moving contact 623. The normally open moving contact 622 and the normally closed moving contact 623 are respectively fixed at both ends of the moving spring along its length. See [link to relevant documentation]. Figure 4The moving spring contact 60 is also provided with a connecting part 63 for welding to the welding station 32, and the connecting part 63 is integrally formed with the moving spring 61.

[0044] In this embodiment, the moving contact 62 is fixedly connected to the moving spring 61, forming at least one groove 621 with an opening facing away from the moving spring 61. This divides a single moving contact 62 into at least two independent contact areas, connected by a single moving spring 61. The moving spring 61 is designed without the need for branching or reserved branching space, allowing for a smaller width. The length of the paired stationary contact and the area of ​​the stationary spring can also be reduced, thereby decreasing the relative area of ​​the moving spring 61 and the stationary spring, thus reducing capacitance, signal leakage, and impedance matching, ultimately improving signal transmission quality. Furthermore, the at least two independent contact areas operate independently during contact switching. When closed, multi-contact contact is achieved, ensuring reliable contact continuity. When open, each area separates synchronously, dispersing arc energy to each contact point, reducing the risk of single-point ablation and extending contact life. In addition, the above configuration eliminates the need for a forked structure in the moving spring 61, allowing for a reduction in the width of the moving spring 61 (avoiding the extra layout space required by traditional forked contacts), reducing material usage, and simultaneously lowering the difficulty of stamping and injection molding (no forked sharp corners, improving mold life), while ensuring the quality of high-frequency signal transmission.

[0045] In this embodiment, the mirror symmetry structure ensures that when the moving contact 62 is closed, the two contact areas corresponding to the stationary contact (separated by the groove 621) are evenly distributed with consistent force. The contact pressure and contact area on both sides of the axis of symmetry are completely consistent, avoiding excessive local pressure (easy to burn out) or insufficient local pressure (poor contact) caused by structural asymmetry. This significantly improves the stability and consistency of contact conduction during high-frequency switching. The single groove 621, combined with the mirror symmetry design, allows the electric arc to spread synchronously to both sides along the axis of symmetry when disconnected, avoiding the energy concentration of the electric arc on one side that may be caused by traditional multi-groove 621 or asymmetrical structures. The contact separation function can be achieved by processing only one groove 621, resulting in lower processing costs.

[0046] In this embodiment, when the moving contact 62 closes with the stationary contact, the end of the moving spring will partially lift up. The groove 621 extends along the length direction of the moving spring 61. Compared with the groove 621 extending along the width direction of the moving spring 61 (the contact area closer to the end of the moving spring 61 is smaller due to the lifting, and the contact area further away from the end of the moving spring 61 is larger), it is more conducive to making the contact area of ​​the two contact areas (separated by the groove 621) corresponding to the stationary contact consistent when the moving spring 61 is elastically deformed, and the force is evenly distributed, which significantly improves the stability and consistency of contact conduction during high-frequency switching.

[0047] In this embodiment, the width of the groove 621 gradually increases towards its opening, so that when disconnected, the electric arc can be more evenly distributed to each independent contact area along the direction of the gradually widening width, further reducing the concentration of electric arc energy in a single contact area and reducing the risk of contact ablation; at the same time, the structure with gradually increasing width optimizes the contact pressure distribution between the moving contact 62 and the stationary contact, making the contact pressure of each contact area more balanced when closed, the contact resistance fluctuation smaller, and improving the stability and consistency of signal conduction.

[0048] In this embodiment, the depth of the groove 621 is 1 / 3 to 2 / 3 of the thickness of the moving contact 62. On the one hand, the depth is not less than 1 / 3 of the thickness of the moving contact 62, which ensures that the moving contact 62 is effectively divided into at least two independent contact areas. During the contact switching process, the independent areas are less likely to be affected by motion interference, thus affecting the stability of the action. When closed, multiple contacts are synchronously contacted to improve the reliability of conduction. At the same time, the effective contact area between the moving contact 62 and the stationary contact is reduced, avoiding the exacerbation of the capacitance effect due to the excessive contact area, and further reducing the risk of high-frequency signal leakage. On the other hand, the depth does not exceed 2 / 3 of the thickness of the moving contact 62, preventing the mechanical strength of the moving contact 62 from decreasing, the contact from deforming or breaking due to the groove 621 being too deep, thus ensuring the strength of the moving contact 61.

[0049] In this embodiment, the moving contact 62 is welded to the moving spring 61, resulting in a simple structure that is easy to install.

[0050] In this embodiment, the size of the contact fixing part 37 corresponds to the size of the part of the moving spring 61 corresponding to the moving contact 62. Size matching avoids the contact fixing part 37 being too large (leading to an increase in ineffective capacitance) or too small (leading to insufficient contact and increased resistance), ensuring that the effective contact area is maximized and the average contact resistance is reduced.

[0051] In this embodiment, the structural arrangement of the normally closed end 36 of the stationary spring, especially the arrangement of the third segment 363, can be calculated based on different angle values ​​according to the actual impedance matching effect, minimizing the change in the cross-sectional area of ​​the stationary spring caused by the corner transition, thereby improving impedance discontinuity and enhancing the quality of high-frequency signal transmission. Specifically, by setting an oblique third segment 363 on the normally closed end 36 of the stationary spring instead of a horizontal or vertical structure, the physical length of the metal conductor can be shortened. Shortening the length of the metal conductor has the following technical advantages: First, it can reduce conductor loss and dielectric loss caused by the material itself during high-frequency signal transmission, thereby reducing signal loss; second, it can reduce the inductive effect of the conductor when transmitting high-frequency signals, thereby reducing signal reflection and distortion; third, it can increase the shortest distance between the normally closed end and the coil end 21, thereby improving the insulation capability between the relay control circuit and the load circuit.

[0052] In this embodiment, the length of the inclined segment 3631 is greater than the length of the horizontal segment 3632, which can further shorten the physical length of the metal conductor.

[0053] The foregoing description of the specifications and embodiments is intended to explain the scope of protection of this utility model, but does not constitute a limitation on the scope of protection of this utility model. Modifications, equivalent substitutions, or other improvements to the embodiments of this utility model or a portion thereof that can be obtained by those skilled in the art through logical analysis, reasoning, or limited experimentation, based on the teachings of this utility model or the foregoing embodiments, should all be included within the scope of protection of this utility model.

Claims

1. A moving spring contact (60) for a high-frequency relay, characterized in that, It includes a movable spring (61) and a movable contact (62), the movable contact (62) being fixed to the movable spring (61) and forming at least one groove (621) with an opening opposite to the movable spring (61).

2. The moving spring contact (60) of the high-frequency relay as described in claim 1, characterized in that, The number of grooves (621) is one, and the moving contact (62) is mirror-symmetrical.

3. The moving spring contact (60) of a high-frequency relay as described in claim 2, characterized in that, The groove (621) extends along the length of the moving spring (61).

4. The moving spring contact (60) of a high-frequency relay as described in claim 1, characterized in that, The width of the groove (621) gradually increases along the direction close to its opening.

5. The moving spring contact (60) of a high-frequency relay as described in claim 1, characterized in that, The depth of the groove (621) is 1 / 3 to 2 / 3 of the thickness of the moving contact (62).

6. The moving spring contact (60) of a high-frequency relay as described in claim 1, characterized in that, The moving contact (62) is welded to the moving spring (61).

7. A high-frequency relay comprising a fixed portion (100) and an oscillating portion (200) oscillating relative to the fixed portion (100) on a first plane, characterized in that, The fixed part (100) is provided with a stationary contact, and the swing part (200) is provided with a moving spring contact (60) as described in any one of claims 1-6, wherein the moving contact (62) corresponds to the stationary contact.

8. A high-frequency relay as described in claim 7, characterized in that, The fixed part (100) is also provided with a contact fixing part (37) fixed to the stationary contact, the size of the contact fixing part (37) corresponding to the size of the part of the moving spring (61) corresponding to the moving contact (62).

9. A high-frequency relay as described in claim 7, characterized in that, The first plane is perpendicular to the X-axis direction; the fixed part (100) includes a base (10) integrally injection molded, a coil assembly (20) and a stationary spring part (30), the coil assembly (20) is provided with a coil end (21), the stationary spring part (30) includes at least one stationary spring assembly, each stationary spring assembly is provided with a normally closed stationary contact (33), a soldering station (32) and a normally open stationary contact (31) arranged sequentially along the Y-axis direction, and a stationary spring normally closed end (36), a stationary spring common end (35) and a stationary spring normally open end (34) corresponding to the normally closed stationary contact (33), the soldering station (32) and the normally open stationary contact (31) respectively; one of the coil ends (21) and the stationary spring normally closed end (36), the stationary spring common end (35) and the stationary spring normally open end (34) are all exposed on one side of the base (10) along the X-axis direction, and the stationary spring normally closed end (36) is closest to the coil end (21); The normally closed end (36) of the stationary spring is provided with a first segment (361) extending along the Z-axis direction connected to the normally closed stationary contact (33), a second segment (362) extending along the Z-axis direction extending out of the base (10), and a third segment (363) connecting the first segment (361) and the second segment (362). The second segment (362) is farther away from the coil end (21) than the first segment (361). The third segment (363) is at least partially inclined relative to the Z-axis direction.

10. A high-frequency relay as described in claim 9, characterized in that, The third segment (363) includes an inclined segment (3631) and a horizontal segment (3632). The length of the inclined segment (3631) is greater than the length of the horizontal segment (3632). The two ends of the inclined segment (3631) are connected to the first segment (361) and the horizontal segment (3632) respectively. The end of the horizontal segment (3632) away from the second segment (362) is connected to the inclined segment (3631).

Images