WO2024067361A1 - 继电器 - Google Patents

继电器 Download PDF

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Publication number
WO2024067361A1
WO2024067361A1 PCT/CN2023/120489 CN2023120489W WO2024067361A1 WO 2024067361 A1 WO2024067361 A1 WO 2024067361A1 CN 2023120489 W CN2023120489 W CN 2023120489W WO 2024067361 A1 WO2024067361 A1 WO 2024067361A1
Authority
WO
WIPO (PCT)
Prior art keywords
welding
welding structure
armature
section
spring body
Prior art date
Application number
PCT/CN2023/120489
Other languages
English (en)
French (fr)
Inventor
林佳宾
李竹姑
黄永彬
Original Assignee
厦门宏发信号电子有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 厦门宏发信号电子有限公司 filed Critical 厦门宏发信号电子有限公司
Publication of WO2024067361A1 publication Critical patent/WO2024067361A1/zh

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/02—Bases; Casings; Covers
    • H01H50/04—Mounting complete relay or separate parts of relay on a base or inside a case
    • H01H50/041—Details concerning assembly of relays
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/12—Ventilating; Cooling; Heating
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/16—Magnetic circuit arrangements
    • H01H50/18—Movable parts of magnetic circuits, e.g. armature
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/54—Contact arrangements
    • H01H50/56—Contact spring sets

Definitions

  • the embodiments of the present disclosure relate to the technical field of electric control devices, and in particular, to a relay with high operational reliability.
  • Ultra-small electromagnetic relays are widely used in network communications, medical equipment, test equipment, security and other fields because of their small size, low coil power consumption, double-pole double-throw contact output capability and good reliability.
  • the ultra-small electromagnetic relays of related technology are usually composed of a movable spring armature part, a base part and a shell.
  • the movable spring armature part is formed as a whole by combined injection molding of the armature, the permanent magnet and the movable spring part containing the movable contact, and the movable spring part is usually symmetrically distributed with the armature as the center.
  • the base part is usually formed by combined injection molding of the coil part and the static spring part with the static contact.
  • the movable spring armature part is supported and positioned in the upper and lower directions with the base at the approximate center position, and the movable spring is welded and fixed to the static spring on the base part to form a whole, and then the electromagnetic relay is formed after the shell is installed.
  • the relay coil is energized and de-energized, the movable spring armature part forms a rotating fulcrum with the supporting part of the base, so that the armature drives the movable spring to swing back and forth during the swinging process, so that the circuit of the reed part is connected and disconnected.
  • the movable spring Since the movable spring is fixed to the base part by welding, the movable spring part between the rotating fulcrum and the welding point of the movable spring armature part will deform and generate a reaction force, which cooperates with the magnetic field attraction generated after the coil is energized, so that the operating voltage and release voltage of the relay meet the requirements and the parameters are stable.
  • relays usually need to switch frequently, and in some working scenarios, the product needs to work reliably for more than 100 million years. Therefore, the movable spring armature part as the operating component is required to have good fatigue resistance and reliable parameter stability to meet the ultra-high service life requirements and consistency requirements.
  • the embodiments of the present disclosure provide a relay with high operating reliability that can extend the service life of the product.
  • the relay with high action reliability of the embodiment of the present disclosure comprises a base part and a movable part that can swing relative to the base part, the movable part comprises a movable spring piece, an armature and a first plastic body, the movable spring piece and the armature are assembled into an integral part through the first plastic body;
  • the movable spring piece comprises a movable spring body and a welding piece structure, the welding piece structure comprises a connecting part and a welding part, the welding part is connected to the movable spring body through the connecting part;
  • the welding part comprises
  • the base portion includes a first welding structure and a second welding structure welded to each other, wherein the first welding structure and the second welding structure are located at a same side of the connecting portion along a length direction of the armature.
  • the welding portion is not coplanar with the dynamic spring body.
  • the connecting portion and the dynamic spring body are arranged coplanarly; a fold line is provided at the connection between the connecting portion and the welding portion, and the welding portion is bent relative to the connecting portion via the fold line.
  • the portion of the welding portion provided with the first welding structure and the second welding structure is bent relative to the dynamic spring body in a direction away from the base portion; or, the portion of the welding portion provided with the first welding structure and the second welding structure is bent relative to the dynamic spring body in a direction close to the base portion.
  • an extension direction of the fold line is perpendicular to a length direction of the armature.
  • the fold line is located on the other side of the connecting portion relative to the first welding structure and the second welding structure.
  • a normally open moving contact and a normally closed moving contact are respectively provided at both ends of the movable spring body along the length direction of the armature, and a connecting line between the normally open moving contact and the normally closed moving contact passes through the midpoint of the fold line.
  • the welding portion includes: a main body portion, which is connected to the movable spring body through the connecting portion, and the first welding structure and the second welding structure are arranged on the main body portion; and a widening portion, which is connected to the main body portion, and along the width direction of the armature, the widening portion corresponds to the position of the first welding structure and/or the second welding structure.
  • the first welding structure is closer to the connecting portion than the second welding structure;
  • the widened portion includes a first widening section and a second widening section, the first widening section corresponds to the position of the first welding structure, and the second widening section corresponds to the position of the second welding structure; along the width direction of the armature, the size of the first widening section is smaller than the size of the second widening section.
  • the first welding structure is closer to the connecting portion than the second welding structure;
  • the widened portion includes a first widening section and a second widening section, the first widening section corresponds to the position of the first welding structure, and the second widening section corresponds to the position of the second welding structure; the first widening section completely covers the position of the first welding structure in the length direction of the armature, and the second widening section completely covers the position of the second welding structure in the length direction of the armature.
  • a starting point of the first widened section is closer to the connecting portion than the first welding structure.
  • the first welding structure and the second welding structure are arranged on a side of the welding portion facing away from the dynamic spring body, and the widened portion is arranged on a side of the welding portion facing the dynamic spring body.
  • a normally open moving contact and a normally closed moving contact are respectively provided at both ends of the movable spring body along the length direction of the armature, and the planes where the normally open moving contact and the normally closed moving contact are located are coplanar with the pole surface of the armature; or, the planes where the normally open moving contact and the normally closed moving contact are located are higher than the pole surface of the armature.
  • a recess is further provided on a side of the movable spring body facing the welding sheet structure, and the recess is arranged at an edge of a connection between the connecting portion and the movable spring body.
  • the welding portion is arranged coplanar with the dynamic spring body.
  • the welding portion includes: a bending section, one end of which is connected to the connecting portion; and an extension section, one end of which is connected to the other end of the bending section; the first welding structure and the second welding structure are arranged in the extension section; wherein the width of the portion where the bending section is connected to the connecting portion is less than or equal to the width of the portion of the extension section where the first welding structure and the second welding structure are arranged.
  • the connecting portion includes: a first connecting segment, one end of which is connected to the dynamic spring body; the width of the first connecting segment is greater than the width of the bending segment; and a second connecting segment, one end of which is connected to the other end of the first connecting segment, and the other end of the second connecting segment is connected to the bending segment; the first connecting segment is perpendicular to the second connecting segment.
  • the movable spring piece and the base part are connected by a first welding structure and a second welding structure. At least two welding structures can better ensure the connection strength between the movable spring piece and the base part, so that the welding piece structure is not easy to be separated from the base part, thereby improving the mechanical life of the relay.
  • the movable spring piece and the base part are connected by the first welding structure and the second welding structure, which can better ensure conductivity and heat dissipation, thereby reducing the temperature rise at the welding point.
  • FIG. 1 is a perspective schematic diagram of a relay according to a first embodiment of the present disclosure.
  • FIG. 2 is a perspective schematic diagram showing FIG. 1 with the outer shell removed.
  • FIG. 3 is a side view schematic diagram of FIG. 1 with the outer shell removed.
  • FIG. 4 is a schematic diagram showing FIG. 2 with the second plastic body removed.
  • FIG. 5 is a schematic diagram showing FIG. 3 with the second plastic body removed.
  • FIG. 6 is a schematic diagram showing a base portion.
  • FIG. 7 shows a schematic diagram of a coil and an iron core.
  • FIG. 8 is a schematic diagram showing a static spring unit and a coil terminal.
  • 9 to 11 are schematic diagrams showing the movable part of the first embodiment of the present disclosure at three different viewing angles.
  • FIG. 12A is a perspective schematic diagram showing one of the movable springs according to the first embodiment of the present disclosure.
  • FIG. 12B is a perspective schematic diagram showing another movable spring according to the first embodiment of the present disclosure.
  • FIG. 13 is a schematic side view of FIG. 12B .
  • FIG. 14A is a schematic top view of FIG. 12A .
  • FIG. 14B is a schematic top view of FIG. 12B .
  • FIG. 15 is a partial enlarged view of the X1 in FIG. 13 .
  • FIG. 16 shows a partial enlarged view of the X2 portion in FIG. 14B .
  • FIG. 17 is a side view schematic diagram showing the relay according to the second embodiment of the present disclosure with the housing removed.
  • FIG. 18 is a schematic side view of the movable spring in FIG. 17 .
  • FIG. 19 shows a local enlarged view of position X3 in FIG. 18 .
  • FIG. 20 and FIG. 21 are schematic diagrams showing the movable part of the relay according to the third embodiment of the present disclosure from two different perspectives.
  • FIG. 22A is a perspective schematic diagram showing one of the movable springs of the relay according to the third embodiment of the present disclosure.
  • FIG. 22B is a perspective schematic diagram showing another movable reed of the relay according to the third embodiment of the present disclosure.
  • FIG. 23A is a schematic diagram showing one of the movable reeds of the relay according to the fourth embodiment of the present disclosure.
  • FIG. 23B is a schematic diagram showing another movable reed of the relay according to the fourth embodiment of the present disclosure.
  • FIG. 24 is a schematic diagram showing the magnitude of the reaction force generated by the deformation of the soldering piece structure according to the embodiment of the present disclosure.
  • Figure 1 shows a three-dimensional schematic diagram of the relay of the first embodiment of the present disclosure.
  • Figure 2 shows a three-dimensional schematic diagram of Figure 1 without the housing 1.
  • Figure 3 shows a side view schematic diagram of Figure 1 without the housing 1.
  • Figure 4 shows a schematic diagram of Figure 2 without the second plastic body 35.
  • Figure 5 shows a schematic diagram of Figure 3 without the second plastic body 35.
  • Figure 6 shows a schematic diagram of the base portion 3.
  • Figure 7 shows a schematic diagram of the coil and the iron core 32.
  • Figure 8 shows a schematic diagram of the static spring unit 33 and the coil terminal 34.
  • the relay of the embodiment of the present disclosure includes a housing 1, a movable part 2 and a base part 3.
  • the movable part 2 is disposed above the base part 3 and can swing relative to the base part 3.
  • the housing 1 covers the movable part 2 and the base part 3.
  • the base portion 3 includes a coil 31, an iron core 32, a static spring unit 33, a coil terminal 34 and a second plastic body 35.
  • the second plastic body 35 assembles the coil 31, the iron core 32, the static spring unit 33 and the coil terminal 34 into an integral part by injection molding.
  • the coil 31 may include a coil frame and an enameled wire, wherein the enameled wire is wound around the outer circumference of the coil frame.
  • the static spring unit 33 includes two normally open static spring pieces 331 , two normally closed static spring pieces 332 and two common end spring pieces 333 .
  • the first end of the normally open static spring piece 331 is provided with a normally open static spring lead-out pin 3311 exposed from the side of the second plastic body 35
  • the first end of the normally closed static spring piece 332 is provided with a normally closed static spring lead-out pin 3321 exposed from the side of the second plastic body 35
  • the first end of the common end spring piece 333 is provided with a common end lead-out pin 3331 exposed from the side of the second plastic body 35.
  • the second end of the normally open static reed 331 is provided with a normally open static contact 3312 exposed on the top surface of the second plastic body 35
  • the second end of the normally closed static reed 332 is provided with a normally closed static contact 3322 exposed on the top surface of the second plastic body 35
  • the second end of the common end reed 333 is provided with a soldering base 3332 exposed on the top surface of the second plastic body 35.
  • the lead pin 341 of the coil terminal 34 is arranged at one end of the second plastic body 35, and the normally closed static spring lead pin 3321, the common end lead pin 3331 and the normally open static spring lead pin 3311 are arranged sequentially from one end of the second plastic body 35 to the other end of the second plastic body 35, and the normally open static spring lead pin 3311 is arranged at the other end of the second plastic body 35.
  • a positioning groove 351 is provided on the side of the second plastic body 35 .
  • the position of the positioning groove 351 corresponds to the position of the soldering platform 3332 , and is used to accommodate the insert during the injection molding process so that the insert is positioned on the soldering platform 3332 to ensure the consistency of the relay parameters.
  • the insert is arranged in the injection mold and in the positioning groove 351 of the second plastic body 35 to realize the function of positioning the welding platform 3332.
  • the positioning groove 351 may be in a trapezoidal shape, which is "small at the top and large at the bottom".
  • the positioning groove 351 is in a trapezoidal shape, which is convenient for demoulding; on the other hand, since the lower part of the positioning groove 351 is larger, it is beneficial to strengthen the strength of the insert.
  • FIG. 9 to 11 show schematic diagrams of the movable part 2 of the first embodiment of the present disclosure at three different viewing angles.
  • the movable part 2 includes two movable springs 22, an armature 21, a permanent magnet 24 and a first plastic body 23.
  • the first plastic body 23 assembles the two movable springs 22, the armature 21 and the permanent magnet 24 into an integral part by injection molding.
  • the permanent magnet 24 can be arranged on the side of the armature 21 facing the base part 3.
  • the two movable springs 22 are respectively arranged on two opposite sides of the width direction D2 of the armature 21. With the armature 21 as the center, the two movable springs 22 can be symmetrically arranged.
  • the movable part 2 further includes a first positioning portion 25, and the base part 3 further includes a second positioning portion 36.
  • the first positioning portion 25 is positioned and matched with the second positioning portion 36. This is equivalent to forming a swing fulcrum, so that the movable portion 2 can swing relative to the base portion 3 at this fulcrum.
  • the movable part 2 includes two first positioning portions 25, and the base part 3 includes two second positioning portions 36.
  • the two first positioning portions 25 are arranged at intervals along the width direction D2 of the movable part 2 and are located in the middle of the length direction D1 of the movable part 2.
  • the two second positioning portions 36 are arranged at intervals along the width direction D2 of the base part 3 and are located in the middle of the length direction D1 of the base part 3.
  • the first positioning portion 25 may be a positioning groove, which is provided on the side of the movable portion 2 facing the base portion 3.
  • the second positioning portion 36 may be a positioning protrusion, which is provided on the surface of the base portion 3 facing the movable portion 2, and the positioning protrusion can extend into the positioning groove to achieve positioning.
  • first positioning portion 25 may also be a positioning protrusion
  • second positioning portion 36 may be a positioning groove
  • the movable spring piece 22 includes a movable spring body 221 and a welding piece structure 222, and the welding piece structure 222 is connected to the movable spring body 221.
  • the welding piece structure 222 is welded to the welding platform 3332 of the base part 3, so that the movable part 2 forms a seesaw structure.
  • the movable spring body 221 is in a long strip-shaped structure, and the welding piece structure 222 is connected to the middle position of the movable spring body 221 in the length direction D1.
  • a normally open moving contact 2211 and a normally closed moving contact 2212 are respectively provided at both ends of the length direction D1 of the moving spring body 221.
  • the normally open moving contact 2211 corresponds to the normally open static contact 3312 of the base part 3
  • the normally closed moving contact 2212 corresponds to the normally closed static contact 3322 of the base part 3.
  • the welding piece structure 222 includes a connecting portion 223 and a welding portion 224, and the welding portion 224 is connected to the movable spring body 221 through the connecting portion 223.
  • the welding portion 224 includes a first welding structure 228 and a second welding structure 229 welded to the base portion 3, and the first welding structure 228 and the second welding structure 229 are located on the same side of the connecting portion 223 along the length direction D1 of the armature 21.
  • the movable reed 22 is connected to the base portion 3 via the first welding structure 228 and the second welding structure 229. At least two welding structures can better ensure the connection strength between the movable reed 22 and the base portion 3, so that the welding piece structure 222 is not easy to be detached from the base portion 3, thereby improving the mechanical life of the relay. At the same time, the movable reed 22 is connected to the base portion 3 via the first welding structure 228 and the second welding structure 229, which can better ensure conductivity and heat dissipation, thereby reducing the temperature rise at the welding point.
  • first welding structure 228 and the second welding structure 229 are welded to the welding base 3332 of the common-end spring 333, for example, by laser welding, but not limited thereto.
  • connection line between the first welding structure 228 and the second welding structure 229 is substantially parallel to the length direction D1 of the armature 21.
  • the two weld points formed are linearly arranged along the length direction D1 of the armature 21.
  • first welding structure 228 and/or the second welding structure 229 can be a groove structure.
  • first welding structure 228 and the second welding structure 229 are both groove structures, and the first welding structure 228 and the second welding structure 229 are both arranged on a side of the welding portion 224 facing away from the dynamic spring body 221 .
  • the groove wall of the groove structure may be arc-shaped to increase the contour length of the welding piece structure 222 and the welding platform 3332 after laser irradiation, thereby improving the bonding force of the welding point and increasing the mechanical life of the relay.
  • first welding structure 228 and the second welding structure 229 may be the same or different.
  • one of the first welding structure 228 and the second welding structure 229 may be a slot structure, and the other may be another structure capable of achieving welding.
  • both the first welding structure 228 and the second welding structure 229 are slot structures, the sizes of the two slot structures may be the same or different.
  • Fig. 15 is a partial enlarged view of X1 in Fig. 13.
  • the welding portion 224 is not coplanar with the dynamic spring body 221.
  • connection portion 223 is arranged coplanar with the movable spring body 221.
  • a fold line 227 is provided at the connection between the connection portion 223 and the welding portion 224.
  • the extension direction of the fold line 227 is perpendicular to the length direction D1 of the armature 21.
  • the welding portion 224 is bent relative to the connection portion 223 through the fold line 227. In this way, during the swinging process of the movable portion 2 relative to the base portion 3, the deformation position in the welding piece structure 222 is around the fold line 227, thereby reducing the deformation stress transmitted to the welding point.
  • the portion of the welding portion 224 provided with the first welding structure 228 and the second welding structure 229 is bent relative to the movable spring body 221 in a direction away from the base portion 3. That is, the welding portion 224 is bent upward relative to the movable spring body 221 and the connecting portion 223 through the fold line 227.
  • an angle ⁇ is formed between the welding portion 224 and the movable spring body 221.
  • the movable spring body 221 is lower on the left and higher on the right.
  • the armature 21 close to the coil terminal 34 side contacts the pole surface of the iron core 32, which is a normally closed end; the armature 21 away from the coil terminal 34 side is separated from the pole surface of the iron core 32, which is a normally open end.
  • the size of the angle ⁇ between the welding portion 224 and the dynamic spring body 221 can be adjusted according to the size of the coil suction force of the relay, thereby further improving the manufacturing qualification rate of the product and enhancing the parameter stability and margin of the product.
  • the fold line 227 is located on the other side of the connection portion 223 relative to the first welding structure 228 and the second welding structure 229.
  • the first welding structure 228 and the second welding structure 229 are located on one side of the connection portion 223, and the fold line 227 is located on the other side of the connection portion 223.
  • the connecting line S between the normally open moving contact 2211 and the normally closed moving contact 2212 of the moving spring body 221 passes through the midpoint of the fold line 227.
  • connection line S starts from the center point of the normally open moving contact 2211 and the center point of the normally closed moving contact 2212.
  • the normally open moving contact 2211 and the normally closed moving contact 2212 are both one contact, then the connection line S The two ends of the line S start from the center point of each contact.
  • the normally open movable contact 2211 and the normally closed movable contact 2212 each include two contacts arranged side by side, one end of the line S starts from the center point of the two contacts of the normally open movable contact 2211, and the other end of the line S starts from the center point of the two contacts of the normally closed movable contact 2212.
  • the plane where the normally open moving contact 2211 and the normally closed moving contact 2212 of the moving spring body 221 are located is higher than the pole surface of the armature 21 , but the height difference is usually controlled not to exceed the overtravel value of the contact.
  • the plane where the normally open moving contact 2211 and the normally closed moving contact 2212 of the moving spring body 221 are located is coplanar with the pole surface of the armature 21, so that the stress generated when the armature 21 contacts the iron core 32 of the base part 3 and the stress generated when the moving and static contacts contact each other reach a stable state at basically the same time, thereby reducing the lateral torsion of the moving spring piece 22 and further improving the stability of the swinging action of the movable part 2.
  • Figure 16 shows a partial enlarged view of X2 in Figure 14B.
  • a recess 2213 is further provided on the side of the movable spring body 221 facing the welding piece structure 222.
  • the recess 2213 is provided at the edge of the connection between the connecting portion 223 and the movable spring body 221.
  • two opposite sides of the connecting portion 223 are provided with recesses 2213. In this way, the length of the connecting portion 223 can be increased without increasing the overall width of the relay.
  • the corners of the recess 2213 are all chamfered, and stress concentration can be reduced through the chamfer transition.
  • the chamfer can be in an arc shape, but is not limited thereto.
  • the welding portion 224 includes a body portion 225 and a widening portion 226.
  • the body portion 225 is connected to the movable spring body 221 through the connecting portion 223.
  • the first welding structure 228 and the second welding structure 229 are arranged on the body portion 225.
  • a fold line 227 is arranged at the connection between the body portion 225 and the connecting portion 223.
  • the widening portion 226 is connected to the body portion 225, and along the width direction D2 of the armature 21, the widening portion 226 corresponds to the position of the first welding structure 228 and/or the second welding structure 229.
  • the rigidity of the welding point is improved to prevent the stress from being transferred to the first welding structure 228 when the movable part 2 swings.
  • a widened portion 226 is provided on one side of the main body portion 225 facing the movable spring body 221 , and the widened portion 226 corresponds to the position of the first welding structure 228 and/or the second welding structure 229 .
  • the widened portion 226 includes a first widened section 2261 and a second widened section 2262, wherein the first widened section 2261 corresponds to the position of the first welding structure 228, and the second widened section 2262 corresponds to the position of the second welding structure 229.
  • the size of the first widened section 2261 is smaller than the size of the second widened section 2262.
  • the first widened section 2261 completely covers the position of the first welding structure 228 in the length direction D1 of the armature 21
  • the second widened section 2262 completely covers the position of the second welding structure 229 in the length direction D1 of the armature 21 .
  • the starting point of the first widened section 2261 is closer to the connecting portion 223 than the first welding structure 228.
  • the starting point of the second widened section 2262 is located between the first welding structure 228 and the second welding structure 229.
  • the first widened section 2261 and the second widened section 2262 of the width are used to ensure stable matching of the suction and reaction force of the product, so that when the welding point formed by the first welding structure 228 is detached during work, the suction and reaction force matching of the welding point formed by the second welding structure 229 during work remains basically unchanged, ensuring the stability of the operating voltage and release voltage of the relay, avoiding permanent failure of the relay after a welding point failure, and improving the reliability of the product while increasing the service life of the product.
  • Figure 24 is a schematic diagram showing the magnitude of the reaction force generated by the deformation of the soldering piece structure of the embodiment of the present disclosure.
  • a is a constant
  • D represents the displacement of the welding piece structure 222 (mm)
  • the displacement D is related to the structure of the product, and is subject to the stroke of the armature 21 rotating around the fulcrum.
  • E represents the material elastic coefficient of the welding piece structure 222 (Gpa), and E is a constant.
  • T represents the thickness of the welding piece structure 222 (mm), and the material elastic coefficient E and the thickness of the welding piece structure T are both related to the material.
  • W represents the width of the welding point in the welding piece structure 222 along the width direction D2 (mm) (i.e., the width of the first welding structure 228/the second welding structure 229 in the welding piece structure 222).
  • L represents the length from the welding point to the fold line 227 along the length direction D1.
  • the size of F during the use of the relay is mainly related to the ratio of W/L3. Therefore, in order to ensure that the size of F remains stable before and after the first welding structure 228 is disconnected, it is necessary to ensure that the ratio of W/L3 is stable.
  • the width of the first welding structure 228 in the welding piece structure 222 is W1
  • the width of the second welding structure 229 is W2.
  • the length from the first welding structure 228 to the fold line 227 is L1
  • the length from the second welding structure 229 to the fold line 227 is L2.
  • the maximum stress ⁇ when the soldering piece structure 222 is deformed is equal to b*L/W*T 2 , where b is a constant.
  • the first welding structure 228 and the second welding structure 229 are disposed on a side of the welding portion 224 facing away from the movable spring body 221 , and the widened portion 226 is disposed on a side of the welding portion 224 facing the movable spring body 221 .
  • the connecting portion 223 includes a first connecting segment 2231 and a second connecting segment 2232 which are perpendicular to each other.
  • One end of the first connecting segment 2231 is connected to the movable spring body 221
  • one end of the second connecting segment 2232 is connected to the other end of the first connecting segment 2231
  • the other end of the second connecting segment 2232 is connected to the body portion 225 .
  • connection between the first connection section 2231 and the dynamic spring body 221 and the connection between the first connection section 2231 and the second connection section 2232 are both provided with arc/rounded transition to reduce stress concentration.
  • the first connecting section 2231 extends along a length direction D1 perpendicular to the armature 21
  • the second connecting section 2232 extends along a length direction D1 parallel to the armature 21
  • the second connecting section 2232 extends from the first connecting section 2231 toward one of the movable contacts of the movable spring body 221 .
  • the main body 225 is J-shaped and includes a bending section 2251 and an extension section 2252.
  • One end of the bending section 2251 is connected to the other end of the second connection section 2232, and the extension section 2252 is connected to the other end of the bending section 2251.
  • 228 and the second welding structure 229 are provided at the extension section 2252.
  • the bending section 2251 is turned 180 degrees so that the extension section 2252 extends from the bending section 2251 to another moving contact point of the dynamic spring body 221.
  • a fold line 227 is provided at the connection between the bending section 2251 and the second connecting section 2232.
  • the width t1 of the portion where the bending section 2251 is connected to the connecting portion 223 is less than or equal to the width t2 of the portion where the first welding structure 228 and the second welding structure 229 are provided in the extension section 2252, that is, t1 ⁇ t2.
  • the width t3 of the first connecting section 2231 is greater than the width t1 of the bending section 2251, and greater than the width t2 of the portion where the first welding structure 228 and the second welding structure 229 are provided in the extension section 2252, that is, t3>t1, and t3>t2.
  • the first welding structure 228 and the second welding structure 229 are disposed on a side of the extension section 2252 facing away from the dynamic spring body 221
  • the first widened section 2261 and the second widened section 2262 are disposed on a side of the extension section 2252 facing the dynamic spring body 221 .
  • the width of the welding sheet structure 222 at the location of the fold line 227 is less than or equal to the width of the first welding structure 228 and the second welding structure 229 at the location.
  • Figure 17 shows a side view of the relay of the second embodiment of the present disclosure without the housing 1.
  • Figure 18 shows a side view of the movable reed 22 in Figure 17.
  • Figure 19 shows a partial enlarged view of X3 in Figure 18.
  • the portion of the welding portion 224 provided with the first welding structure 228 and the second welding structure 229 is bent relative to the movable spring body 221 toward the direction close to the base portion 3. In other words, the welding portion 224 is bent downward relative to the movable spring body 221 and the connecting portion 223 through the fold line 227.
  • an angle ⁇ is formed between the welding portion 224 and the movable spring body 221.
  • the movable spring body 221 is higher on the left and lower on the right. Therefore, when the portion of the welding portion 224 provided with the first welding structure 228 and the second welding structure 229 is bent toward the base portion 3 relative to the movable spring body 221, the armature 21 close to the coil terminal 34 side contacts the pole surface of the iron core 32, which is a normally open end; the armature 21 away from the coil terminal 34 side is separated from the pole surface of the iron core 32, which is a normally closed end.
  • the welding portion 224 can be folded upward or downward as needed, thereby facilitating adaptive adjustment of the normally open end and the normally closed end of the relay according to usage requirements.
  • Figures 20 and 21 show schematic diagrams of the movable part 2 of the relay of the third embodiment of the present disclosure from two different perspectives.
  • Figure 22A shows a three-dimensional schematic diagram of one of the movable springs of the relay of the third embodiment of the present disclosure
  • Figure 22B shows a three-dimensional schematic diagram of another movable spring of the relay of the third embodiment of the present disclosure.
  • the welding piece structure 222 does not have a fold line 227 , but the welding portion 224 , the connecting portion 223 and the movable spring body 221 are arranged on the same plane.
  • Figure 23A shows a schematic diagram of one of the movable springs of the relay of the fourth embodiment of the present disclosure.
  • Figure 23B shows a schematic diagram of another movable spring of the relay of the fourth embodiment of the present disclosure.
  • the widened portion 226 is only provided corresponding to the first welding structure 228 , while the widened portion 226 is not provided corresponding to the second welding structure 229 .
  • the terms “first”, “second”, and “third” are used for descriptive purposes only and are not to be understood as indicating or implying relative importance; the term “plurality” refers to two or more, unless otherwise expressly defined.
  • Terms such as “installed”, “connected”, “connected”, and “fixed” should be understood in a broad sense.
  • “connected” can be a fixed connection, a detachable connection, or an integral connection;
  • “connected” can be a direct connection or an indirect connection through an intermediate medium.

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Abstract

一种继电器，包括底座部分（3）和相对于底座部分（3）可摆动的可动部分（2），可动部分（2）包括动簧片（22）、衔铁（21）和第一塑料体（23），动簧片（22）和衔铁（21）通过第一塑料体（23）组装成一整体件；动簧片（22）包括动簧本体（221）和焊片结构（222），焊片结构（222）包括连接部（223）和焊接部（224），焊接部（224）通过连接部（223）连接于动簧本体（221）；焊接部（224）包括与底座部分（3）相焊接的第一焊接结构（228）和第二焊接结构（229），第一焊接结构（228）和第二焊接结构（229）位于连接部（223）沿衔铁（21）的长度方向（D1）的同一侧。

Description

继电器
交叉引用
本公开要求于2022年9月30日提交的申请号为202211210067.9、名称为“具有高动作可靠性的继电器”的中国专利申请的优先权，该中国专利申请的全部内容通过引用全部并入本文。
技术领域
本公开实施例涉及电控制器件技术领域，具体而言，涉及一种具有高动作可靠性的继电器。
背景技术
超小型电磁继电器，因为具备体积小、线圈功耗低、具备双刀双掷触点输出能力、可靠性好的优点，大量使用于网络通讯、医疗设备、测试设备、安防等领域。相关技术的超小型电磁继电器通常由动簧衔铁部分、底座部分和外壳所组成。其中，动簧衔铁部分是由衔铁、永磁体以及包含动触点的动簧部分通过组合注塑形成整体，动簧部分通常以衔铁为中心进行对称分布。底座部分通常由线圈部分、带静触点的静簧部分通过组合注塑形成。动簧衔铁部分在大致中心位置与底座在上下方向支撑定位，并通过将动簧与底座部分上的静簧焊接固定形成整体，再装上外壳后则形成电磁继电器。当给继电器线圈通电以及断电时，动簧衔铁部分通过与底座的支撑部位形成转动支点，使衔铁在摆动过程中，带动动簧来回摆动，使簧片部分的电路产生接通以及断开。由于动簧通过焊接与底座部分形成固定，在动簧衔铁部分的转动支点与焊接点之间的动簧部分将产生形变，产生反力，该反力与线圈通电后产生的磁场吸力形成配合，使继电器的动作电压、释放电压符合要求且参数稳定。在上述应用领域中，继电器通常需要频繁切换工作，某些工作场景下要求产品需要可靠工作一亿以上寿命，因此要求作为动作部件的动簧衔铁部分要具备很好的耐疲劳性能，以及可靠的参数稳定性，以便满足超高使用寿命要求与一致性要求。
然而，相关技术中的动簧与底座部分的焊接点容易产生应力疲劳而发生脱开失效的风险，导致继电器永久失效。
发明内容
本公开实施例提供一种能够提升产品使用寿命的具有高动作可靠性的继电器。
本公开实施例的具有高动作可靠性的继电器，包括底座部分和相对于所述底座部分可摆动的可动部分，所述可动部分包括动簧片、衔铁和第一塑料体，所述动簧片和所述衔铁通过所述第一塑料体组装成一整体件；所述动簧片包括动簧本体和焊片结构，焊片结构包括连接部和焊接部，所述焊接部通过所述连接部连接于所述动簧本体；所述焊接部包括与 所述底座部分相焊接的第一焊接结构和第二焊接结构，所述第一焊接结构和所述第二焊接结构位于所述连接部沿所述衔铁的长度方向的同一侧。
根据本公开的一些实施方式，所述焊接部与所述动簧本体不共面。
根据本公开的一些实施方式，所述连接部与所述动簧本体共面设置；所述连接部与所述焊接部的连接处设有折线，所述焊接部通过所述折线相对于所述连接部弯折设置。
根据本公开的一些实施方式，所述焊接部设有所述第一焊接结构和所述第二焊接结构的部分相对于所述动簧本体朝着远离所述底座部分的方向弯折；或，所述焊接部设有所述第一焊接结构和所述第二焊接结构的部分相对于所述动簧本体朝着靠近所述底座部分的方向弯折。
根据本公开的一些实施方式，所述折线的延伸方向与所述衔铁的长度方向垂直。
根据本公开的一些实施方式，沿着所述衔铁的长度方向，所述折线相对于所述第一焊接结构和所述第二焊接结构位于所述连接部的另一侧。
根据本公开的一些实施方式，所述动簧本体沿所述衔铁的长度方向的两端分别设有常开动触点和常闭动触点，所述常开动触点与所述常闭动触点之间的连线通过所述折线的中点。
根据本公开的一些实施方式，所述焊接部包括：本体部，通过所述连接部连接于所述动簧本体，所述第一焊接结构和所述第二焊接结构设于所述本体部上；以及，加宽部，连接于所述本体部，且沿所述衔铁的宽度方向，所述加宽部与所述第一焊接结构和/或所述第二焊接结构的位置对应。
根据本公开的一些实施方式，沿着所述衔铁的长度方向，所述第一焊接结构相对于所述第二焊接结构更靠近所述连接部；所述加宽部包括第一加宽段和第二加宽段，所述第一加宽段与所述第一焊接结构的位置对应，所述第二加宽段与所述第二焊接结构的位置对应；沿着所述衔铁的宽度方向，所述第一加宽段的尺寸小于所述第二加宽段的尺寸。
根据本公开的一些实施方式，沿着所述衔铁的长度方向，所述第一焊接结构相对于所述第二焊接结构更靠近所述连接部；所述加宽部包括第一加宽段和第二加宽段，所述第一加宽段与所述第一焊接结构的位置对应，所述第二加宽段与所述第二焊接结构的位置对应；所述第一加宽段在所述衔铁的长度方向上完全覆盖所述第一焊接结构所在位置，所述第二加宽段在所述衔铁的长度方向上完全覆盖所述第二焊接结构所在位置。
根据本公开的一些实施方式，沿着所述衔铁的长度方向，所述第一加宽段的起点相对于所述第一焊接结构更靠近所述连接部。
根据本公开的一些实施方式，所述第一焊接结构和所述第二焊接结构设于所述焊接部背向所述动簧本体的一侧，所述加宽部设于所述焊接部朝向所述动簧本体的一侧。
根据本公开的一些实施方式，所述动簧本体沿所述衔铁的长度方向的两端分别设有常开动触点和常闭动触点，所述常开动触点和所述常闭动触点所在平面与所述衔铁的极面共面设置；或，所述常开动触点和所述常闭动触点所在平面高于所述衔铁的极面。
根据本公开的一些实施方式，所述动簧本体朝向所述焊片结构的一侧还设有凹部，所述凹部设置于所述连接部与所述动簧本体的连接处的边缘。
根据本公开的一些实施方式，所述焊接部与所述动簧本体共面设置。
根据本公开的一些实施方式，所述焊接部包括：折弯段，所述折弯段的一端连接于所述连接部；以及，延伸段，所述延伸段的一端连接于所述折弯段的另一端；所述第一焊接结构和所述第二焊接结构设于所述延伸段；其中，所述折弯段与所述连接部连接的部分的宽度小于等于所述延伸段中设有所述第一焊接结构和所述第二焊接结构的部分的宽度。
根据本公开的一些实施方式，所述连接部包括：第一连接段，一端连接于所述动簧本体；所述第一连接段的宽度大于所述折弯段的宽度；以及，第二连接段，一端连接于所述第一连接段的另一端，所述第二连接段的另一端连接于所述折弯段；所述第一连接段与所述第二连接段垂直。
本公开上述的一个实施例至少具有如下优点或有益效果：
本公开实施例的继电器，动簧片与底座部分之间通过第一焊接结构和第二焊接结构相连接，至少两个焊接结构能够更好地保证动簧片与底座部分之间的连接强度，使得焊片结构不易于从底座部分上脱开，提升了继电器的机械寿命。同时，动簧片与底座部分通过第一焊接结构和第二焊接结构连接，能够更好地保证导电性和散热性，进而降低焊点位置的温升。
附图说明
图1示出的是本公开第一实施例继电器的立体示意图。
图2示出的是图1去除外壳的立体示意图。
图3示出的是图1去除外壳的侧视示意图。
图4示出的是图2去除第二塑料体的示意图。
图5示出的是图3去除第二塑料体的示意图。
图6示出的是底座部分的示意图。
图7示出的是线圈和铁芯的示意图。
图8示出的是静簧单元和线圈端子的示意图。
图9至图11示出的是本公开第一实施例的可动部分的三个不同视角下的示意图。
图12A示出的是本公开第一实施例的其中一个动簧片的立体示意图。
图12B示出的是本公开第一实施例的另一个动簧片的立体示意图。
图13示出的是图12B的侧视示意图。
图14A示出的是图12A的俯视示意图。
图14B示出的是图12B的俯视示意图。
图15示出的是图13中X1处的局部放大图。
图16示出的是图14B中X2处的局部放大图。
图17示出的是本公开第二实施例继电器去除外壳的侧视示意图。
图18示出的是图17中动簧片的侧视示意图。
图19示出的是图18中X3处的局部放大图。
图20和图21示出的是本公开第三实施例继电器的可动部分的两个不同视角下的示意图。
图22A示出的是本公开第三实施例继电器的其中一个动簧片的立体示意图。
图22B示出的是本公开第三实施例继电器的另一个动簧片的立体示意图。
图23A示出的是本公开第四实施例继电器的其中一个动簧片的示意图。
图23B示出的是本公开第四实施例继电器的另一个动簧片的示意图。
图24示出的是本公开实施例焊片结构发生形变而产生的反力大小的示意图。
其中，附图标记说明如下：
1、外壳；2、可动部分；21、衔铁；22、动簧片；221、动簧本体；2211、常开动触
点；2212、常闭动触点；2213、凹部；222、焊片结构；223、连接部；2231、第一连接段；2232、第二连接段；224、焊接部；225、本体部；2251、折弯段；2252、延伸段；226、加宽部；2261、第一加宽段；2262、第二加宽段；227、折线；228、第一焊接结构；229、第二焊接结构；23、第一塑料体；24、永磁铁；25、第一定位部；3、底座部分；31、线圈；32、铁芯；33、静簧单元；331、常开静簧片；3311、常开静簧引出脚；3312、常开静触点；332、常闭静簧片；3321、常闭静簧引出脚；3322、常闭静触点；333、公共端簧片；3331、公共端引出脚；3332、焊台；34、线圈端子；341、引出脚；35、第二塑料体；351、定位槽；36、第二定位部；D1、长度方向；D2、宽度方向。
具体实施方式
现在将参考附图更全面地描述示例实施方式。然而，示例实施方式能够以多种形式实施，且不应被理解为限于在此阐述的实施方式；相反，提供这些实施方式使得本公开将全面和完整，并将示例实施方式的构思全面地传达给本领域的技术人员。图中相同的附图标记表示相同或类似的结构，因而将省略它们的详细描述。
如图1至图8所示，图1示出的是本公开第一实施例继电器的立体示意图。图2示出的是图1去除外壳1的立体示意图。图3示出的是图1去除外壳1的侧视示意图。图4示出的是图2去除第二塑料体35的示意图。图5示出的是图3去除第二塑料体35的示意图。图6示出的是底座部分3的示意图。图7示出的是线圈和铁芯32的示意图。图8示出的是静簧单元33和线圈端子34的示意图。
本公开实施例的继电器包括外壳1、可动部分2和底座部分3。可动部分2设置于底座部分3的上方，且可动部分2相对于底座部分3可摆动。外壳1罩设于可动部分2和底座部分3。
可以理解的是，本公开实施例中的术语“包括”和“具有”以及它们任何变形，意 图在于覆盖不排他的包含。例如包含了一系列步骤或单元的过程、方法、系统、产品或设备没有限定于已列出的步骤或单元，而是可选地还包括没有列出的步骤或单元，或可选地还包括对于这些过程、方法、产品或设备固有的其它步骤或组件。
底座部分3包括线圈31、铁芯32、静簧单元33、线圈端子34和第二塑料体35。第二塑料体35通过注塑成型方式将线圈31、铁芯32、静簧单元33、线圈端子34组装成一整体件。
线圈31可以包括线圈架和漆包线，漆包线绕设于线圈架的外周。静簧单元33包括两个常开静簧片331、两个常闭静簧片332和两个公共端簧片333。
常开静簧片331的第一端设有露出第二塑料体35侧面的常开静簧引出脚3311，常闭静簧片332的第一端设有露出第二塑料体35侧面的常闭静簧引出脚3321，公共端簧片333的第一端设有露出第二塑料体35侧面的公共端引出脚3331。
常开静簧片331的第二端设有露出第二塑料体35顶面的常开静触点3312，常闭静簧片332的第二端设有露出第二塑料体35顶面的常闭静触点3322，公共端簧片333的第二端设有露出第二塑料体35顶面的焊台3332。
在底座部分3中，线圈端子34的引出脚341设置于第二塑料体35的一端，常闭静簧引出脚3321、公共端引出脚3331和常开静簧引出脚3311则顺次由第二塑料体35的一端向第二塑料体35的另一端方向布置，常开静簧引出脚3311则设置于第二塑料体35的另一端。
如图2所示，第二塑料体35的侧面开设有定位槽351，定位槽351的位置与焊台3332的位置对应，用于在注塑成型过程中容纳镶件，以使镶件定位焊台3332，保证继电器参数的一致性。
具体来说，当将线圈31、铁芯32、静簧单元33、线圈端子34和第二塑料体35通过注塑成型方式组装成一整体件的过程中，镶件设置在注塑模具内，并设置在第二塑料体35的定位槽351内，以实现定位焊台3332的作用。
作为一示例，定位槽351的形状可以为梯形，且呈“上小下大”。一方面，定位槽351呈梯形便于脱模；另一方面，由于定位槽351的下部尺寸较大，有利于加强镶件的强度。
如图9至图11所示，图9至图11示出的是本公开第一实施例的可动部分2的三个不同视角下的示意图。可动部分2包括两个动簧片22、衔铁21、永磁铁24和第一塑料体23，第一塑料体23通过注塑成型方式将两个动簧片22、衔铁21和永磁铁24组装成一整体件。永磁铁24可以设置于衔铁21朝向底座部分3的一侧。两个动簧片22分别设置于衔铁21的宽度方向D2的两个相对的侧边。以衔铁21为中心，两个动簧片22可以是对称设置的。
如图6和图11所示，可动部分2还包括第一定位部25，底座部分3还包括第二定位部36，第一定位部25与第二定位部36定位配合。第一定位部25和第二定位部36 相当于形成摆动支点，使得可动部分2以该支点相对于底座部分3可摆动。
作为一示例，可动部分2包括两个第一定位部25，底座部分3包括两个第二定位部36。两个第一定位部25沿着可动部分2的宽度方向D2间隔设置，且位于可动部分2的长度方向D1的中间位置。两个第二定位部36沿着底座部分3的宽度方向D2间隔设置，且位于底座部分3的长度方向D1的中间位置。
作为一示例，第一定位部25可以为定位槽，定位槽设置于可动部分2朝向底座部分3的一侧。第二定位部36可以为定位凸起，定位凸起凸设于底座部分3朝向可动部分2的表面，且定位凸起能够伸入定位槽内，实现定位。
当然，在其他实施方式中，第一定位部25也可以为定位凸起，而第二定位部36为定位槽。
如图12A至图14B所示，动簧片22包括动簧本体221和焊片结构222，焊片结构222连接于动簧本体221。焊片结构222与底座部分3的焊台3332相焊接，使得可动部分2形成跷跷板结构。
作为一示例，动簧本体221呈长条带状结构，焊片结构222连接于动簧本体221的长度方向D1的中间位置。
动簧本体221的长度方向D1的两端分别设有常开动触点2211和常闭动触点2212，常开动触点2211与底座部分3的常开静触点3312对应，常闭动触点2212与底座部分3的常闭静触点3322对应。
请继续参阅图12A至图14B，焊片结构222包括连接部223和焊接部224，焊接部224通过连接部223连接于动簧本体221。焊接部224包括与底座部分3相焊接的第一焊接结构228和第二焊接结构229，第一焊接结构228和第二焊接结构229位于连接部223沿衔铁21的长度方向D1的同一侧。
在本实施例中，动簧片22与底座部分3之间通过第一焊接结构228和第二焊接结构229相连接，至少两个焊接结构能够更好地保证动簧片22与底座部分3之间的连接强度，使得焊片结构222不易于从底座部分3上脱开，提升了继电器的机械寿命。同时，动簧片22与底座部分3通过第一焊接结构228和第二焊接结构229连接，能够更好地保证导电性和散热性，进而降低焊点位置的温升。
可以理解的是，第一焊接结构228和第二焊接结构229与公共端簧片333的焊台3332相焊接，例如采用激光焊接，但不以此为限。
作为一示例，第一焊接结构228和第二焊接结构229之间的连线大致平行于衔铁21的长度方向D1。换言之，当第一焊接结构228和第二焊接结构229与底座部分3的焊台3332焊接后，形成的两个焊点是沿衔铁21的长度方向D1呈线性排列。
可以理解的是，第一焊接结构228和/或第二焊接结构229可以为槽结构。
作为一示例，第一焊接结构228和第二焊接结构229均为槽结构，第一焊接结构228和第二焊接结构229均设置于焊接部224背向动簧本体221的一侧。
槽结构的槽壁可以为弧形，以加大激光照射后焊片结构222与焊台3332结合的轮廓线长度，进而提高焊点的结合力，提升继电器的机械寿命。
可以理解的是，第一焊接结构228与第二焊接结构229的具体结构可以是相同的，也可以是不同的。举例来说，第一焊接结构228和第二焊接结构229其中之一可以为槽结构，另一个可以为能够实现焊接的其他结构。当第一焊接结构228和第二焊接结构229均为槽结构时，两个槽结构的尺寸可以相同或不相同。
如图12A、图12B和图15所示，图15示出的是图13中X1处的局部放大图。焊接部224与动簧本体221不共面。
作为一示例，连接部223与动簧本体221共面设置。连接部223与焊接部224的连接处设有折线227，折线227的延伸方向与衔铁21的长度方向D1垂直，焊接部224通过折线227相对于连接部223弯折设置。这样在可动部分2相对于底座部分3摆动的过程中，焊片结构222中的形变位置是围绕在该折线227附近，进而减少形变应力传递至焊点。
如图15所示，焊接部224设有第一焊接结构228和第二焊接结构229的部分相对于动簧本体221朝着远离底座部分3的方向弯折。也就是说，焊接部224通过折线227相对于动簧本体221和连接部223向上弯折。
结合图3和图15所示，焊接部224与动簧本体221之间形成一夹角β。当焊接部224的第一焊接结构228和第二焊接结构229水平地焊接在焊台3332上时，动簧本体221呈现左低右高。因此，当焊接部224设有第一焊接结构228和第二焊接结构229的部分相对于动簧本体221朝着远离底座部分3的方向弯折时，靠近线圈端子34侧的衔铁21与铁芯32的极面接触，为常闭端；远离线圈端子34侧的衔铁21与铁芯32的极面分离，为常开端。
可以理解的是，焊接部224与动簧本体221之间的夹角β的大小可以根据继电器的线圈吸力大小进行调整，进而进一步提高产品的制造合格率，提升产品的参数稳定性和余量。
沿着衔铁21的长度方向D1，折线227相对于第一焊接结构228和第二焊接结构229位于连接部223的另一侧。换言之，沿着衔铁21的长度方向D1，第一焊接结构228和第二焊接结构229位于连接部223的一侧，折线227位于连接部223的另一侧。
请继续参阅图14A和图14B，动簧本体221的常开动触点2211和常闭动触点2212之间的连线S通过折线227的中点。通过这样的设计，当可动部分2相对于底座部分3摆动，且动簧片22的动触点与静簧单元33的静触点接触时，动簧片22产生形变的反力是与折线227大致共线，进而减小动簧片22的侧向扭力，提高可动部分2摆动动作的稳定性，提升机械寿命的同时，又提升了产品参数的一致性与稳定性。
需要说明的是，连线S的两端分别起始于常开动触点2211的中心点和常闭动触点2212的中心点。举例来说，若常开动触点2211和常闭动触点2212均为一个触点，则连 线S的两端分别起始于各触点的中心点。若常开动触点2211和常闭动触点2212均包括两个并排布置的触点，则连线S的一端起始于常开动触点2211的两个触点的中心点，连线S的另一端起始于常闭动触点2212的两个触点的中心点。
如图9所示，动簧本体221的常开动触点2211和常闭动触点2212所在平面高于衔铁21的极面，但是该高度差通常控制在不超过触点的超行程数值。
当然，在其他实施方式中，动簧本体221的常开动触点2211和常闭动触点2212所在平面与衔铁21的极面共面设置，这样使得衔铁21与底座部分3的铁芯32接触时所产生的应力与动静触点接触时所产生的应力基本同时达到稳定状态，进而减小动簧片22的侧向扭力，进一步提高可动部分2摆动动作的稳定性。
如图16所示，图16示出的是图14B中X2处的局部放大图。动簧本体221朝向焊片结构222的一侧还设有凹部2213，凹部2213设置于连接部223与动簧本体221的连接处的边缘。
作为一示例，沿着衔铁21的长度方向D1，连接部223的两个相对的侧边均设有凹部2213。这样，在不增加继电器的整体宽度的前提下能够增加连接部223的长度。
进一步地，凹部2213的拐角处均设有倒角，通过倒角过渡，可减小应力集中。作为一示例，倒角可以为圆弧形状，但不以此为限。
继续参阅图16，沿着衔铁21的长度方向D1，第一焊接结构228相对于第二焊接结构229更靠近连接部223。焊接部224包括本体部225和加宽部226，本体部225通过连接部223连接于动簧本体221，第一焊接结构228和第二焊接结构229设于本体部225上。本体部225与连接部223的连接处设有折线227。加宽部226连接于本体部225，且沿衔铁21的宽度方向D2，加宽部226与第一焊接结构228和/或第二焊接结构229的位置对应。
通过设置加宽部226，以提升焊点位置的刚性，避免可动部分2摆动时将应力传递至第一焊接结构228。
进一步地，本体部225朝向动簧本体221的一侧设有加宽部226，加宽部226与第一焊接结构228和/或第二焊接结构229的位置对应。
作为一示例，加宽部226包括第一加宽段2261和第二加宽段2262，第一加宽段2261与第一焊接结构228的位置对应，第二加宽段2262与第二焊接结构229的位置对应。沿着衔铁21的宽度方向D2，第一加宽段2261的尺寸小于第二加宽段2262的尺寸。
第一加宽段2261在衔铁21的长度方向D1上完全覆盖第一焊接结构228所在位置，第二加宽段2262在衔铁21的长度方向D1上完全覆盖第二焊接结构229所在位置。
沿着衔铁21的长度方向D1，第一加宽段2261的起点相对于第一焊接结构228更靠近连接部223。第二加宽段2262的起点位于第一焊接结构228和第二焊接结构229之间。
通过在焊接部224中与第一焊接结构228和第二焊接结构229对应的位置设置不同 宽度的第一加宽段2261和第二加宽段2262，以保证产品的吸力、反力稳定匹配，使得当第一焊接结构228所形成的焊点在工作中脱开后，第二焊接结构229所形成的焊点在工作时的吸力、反力匹配基本保持不变，确保继电器的动作电压、释放电压的稳定性，避免在一个焊点失效后导致继电器永久性失效，在提升产品使用寿命的同时，又提升了产品的可靠性。
具体来说，如图14A、图14B和图24所示，图24示出的是本公开实施例焊片结构发生形变而产生的反力大小的示意图。焊片结构222产生的反力F＝a(W*E*D*T3)/L3。
其中，a为常数，D代表焊片结构222的位移量(mm)，位移量D与产品的结构相关，且受制于衔铁21围绕支点转动的行程。E代表焊片结构222的材料弹性系数(Gpa)，且E为常数。T代表焊片结构222的厚度(mm)，材料弹性系数E与焊片结构厚度T均与材料相关。W代表焊片结构222中焊点所在位置沿宽度方向D2的宽度(mm)(即焊片结构222中第一焊接结构228/第二焊接结构229所在位置的宽度)。L代表沿长度方向D1焊点到折线227的长度。
由此可以看出，在继电器产品结构定型以及焊片结构222的材料选定后，继电器使用过程中F的大小主要与W/L3的比值相关。那么为了保证F的大小在第一焊接结构228脱开前与脱开后保持稳定，需要确保W/L3的比值稳定。
因此，在本实施例中，如图14A和图14B所示，设焊片结构222中第一焊接结构228所在位置的宽度为W1，第二焊接结构229所在位置的宽度为W2。第一焊接结构228到折线227的长度为L1，第二焊接结构229到折线227的长度为L2。通过尺寸优化，确保(W1/L13)≈(W2/L23)，即可保证第一焊接结构228工作时以及第一焊接结构228脱开且第二焊接结构229工作时，反力F的稳定性，进而保证继电器的吸力反力匹配基本维持不变，保证继电器动作电压、释放电压的稳定。
此外，焊片结构222发生形变时的最大应力σ＝b*L/W*T2。其中，b为常数。
请继续参阅图16，第一焊接结构228和第二焊接结构229设于焊接部224背向动簧本体221的一侧，加宽部226设于焊接部224朝向动簧本体221的一侧。
连接部223包括相互垂直的第一连接段2231和第二连接段2232。第一连接段2231的一端连接于动簧本体221，第二连接段2232的一端连接于第一连接段2231的另一端，第二连接段2232的另一端与本体部225连接。
第一连接段2231与动簧本体221之间的连接处、第一连接段2231与第二连接段2232之间的连接处均设有圆弧/圆角过渡，以减小应力集中。
第一连接段2231沿垂直于衔铁21的长度方向D1延伸，第二连接段2232沿平行于衔铁21的长度方向D1延伸，且第二连接段2232自第一连接段2231向动簧本体221的其中一个动触点延伸。
本体部225呈J型，且包括折弯段2251和延伸段2252。折弯段2251的一端连接于第二连接段2232的另一端，延伸段2252连接于折弯段2251的另一端。第一焊接结构 228和第二焊接结构229设于延伸段2252。折弯段2251为180度转折，以使延伸段2252自折弯段2251向动簧本体221的另一个动触点延伸。折弯段2251与第二连接段2232的连接处设有折线227。
结合图14A、图14B和图16所示，折弯段2251与连接部223连接的部分的宽度t1小于等于延伸段2252中设有第一焊接结构228和第二焊接结构229的部分的宽度t2，即t1≤t2。同时，第一连接段2231的宽度t3大于折弯段2251的宽度t1，且大于延伸段2252中设有第一焊接结构228和第二焊接结构229的部分的宽度t2，即t3＞t1，且t3＞t2。通过这样的设计，有效增加了衔铁部件的刚性，在衔铁摆动的时候，动簧片22的变形形成在折弯段2251，便于提高产品参数的稳定性。
第一焊接结构228和第二焊接结构229设于延伸段2252背向动簧本体221的一侧，第一加宽段2261和第二加宽段2262设于延伸段2252朝向动簧本体221的一侧。
作为一示例，焊片结构222中折线227所在位置的宽度小于等于第一焊接结构228和第二焊接结构229所在位置的宽度。
如图17至图19所示，图17示出的是本公开第二实施例继电器去除外壳1的侧视示意图。图18示出的是图17中动簧片22的侧视示意图。图19示出的是图18中X3处的局部放大图。第二实施例与第一实施例的相同之处不再赘述，其不同之处在于：
焊接部224设有第一焊接结构228和第二焊接结构229的部分相对于动簧本体221朝着靠近底座部分3的方向弯折。也就是说，焊接部224通过折线227相对于动簧本体221和连接部223向下弯折。
结合图17和图18，焊接部224与动簧本体221之间形成一夹角β。当焊接部224的第一焊接结构228和第二焊接结构229水平地焊接在焊台3332上时，动簧本体221呈现左高右低。因此，当焊接部224设有第一焊接结构228和第二焊接结构229的部分相对于动簧本体221朝着靠近底座部分3的方向弯折时，靠近线圈端子34侧的衔铁21与铁芯32的极面接触，为常开端；远离线圈端子34侧的衔铁21与铁芯32的极面分离，为常闭端。
由此可见，通过折线227的设置，可以根据需要将焊接部224向上翻折或向下翻折，进而方便继电器的常开端、常闭端根据使用要求进行适应性调整。
如图20至图22B所示，图20和图21示出的是本公开第三实施例继电器的可动部分2的两个不同视角下的示意图。图22A示出的是本公开第三实施例继电器的其中一个动簧片的立体示意图，图22B示出的是本公开第三实施例的继电器的另一个动簧片的立体示意图。第三实施例与第一和第二实施例的相同之处不再赘述，其不同之处在于：
焊片结构222中并不设置折线227，而是焊接部224、连接部223与动簧本体221共面设置。
如图23A和图23B所示，图23A示出的是本公开第四实施例继电器的其中一个动簧片的示意图。图23B示出的是本公开第四实施例继电器的另一个动簧片的示意图。第 四实施例与上述实施例的相同之处不再赘述，其不同之处在于：
当产品的参数变化不敏感或参数余量较大时，加宽部226仅与第一焊接结构228对应设置，而第二焊接结构229不对应设置加宽部226。
可以理解的是，本公开提供的各个实施例/实施方式在不产生矛盾的情况下可以相互组合，此处不再一一举例说明。
在本公开的实施例中，术语“第一”、“第二”、“第三”仅用于描述的目的，而不能理解为指示或暗示相对重要性；术语“多个”则指两个或两个以上，除非另有明确的限定。术语“安装”、“相连”、“连接”、“固定”等术语均应做广义理解，例如，“连接”可以是固定连接，也可以是可拆卸连接，或一体地连接；“相连”可以是直接相连，也可以通过中间媒介间接相连。对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本公开实施例中的具体含义。
本公开实施例的描述中，需要理解的是，术语“上”、“下”、“左”、“右”、“前”、“后”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本公开实施例和简化描述，而不是指示或暗示所指的装置或单元必须具有特定的方向、以特定的方位构造和操作，因此，不能理解为对本公开实施例的限制。
在本说明书的描述中，术语“一个实施例”、“一些实施例”、“具体实施例”等的描述意指结合该实施例或示例描述的具体特征、结构、材料或特点包含于本公开实施例的至少一个实施例或示例中。在本说明书中，对上述术语的示意性表述不一定指的是相同的实施例或实例。而且，描述的具体特征、结构、材料或特点可以在任何的一个或多个实施例或示例中以合适的方式结合。
以上仅为本公开实施例的优选实施例而已，并不用于限制本公开实施例，对于本领域的技术人员来说，本公开实施例可以有各种更改和变化。凡在本公开实施例的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本公开实施例的保护范围之内。

Claims (17)

  1. 一种继电器，包括底座部分和相对于所述底座部分可摆动的可动部分，所述可动部分包括动簧片、衔铁和第一塑料体，所述动簧片和所述衔铁通过所述第一塑料体组装成一整体件；其中，所述动簧片包括：
    动簧本体；
    焊片结构，包括连接部和焊接部，所述焊接部通过所述连接部连接于所述动簧本体；所述焊接部包括与所述底座部分相焊接的第一焊接结构和第二焊接结构，所述第一焊接结构和所述第二焊接结构位于所述连接部沿所述衔铁的长度方向的同一侧。
  2. 根据权利要求1所述的继电器，其中，所述焊接部与所述动簧本体不共面。
  3. 根据权利要求2所述的继电器，其中，所述连接部与所述动簧本体共面设置；
    所述连接部与所述焊接部的连接处设有折线，所述焊接部通过所述折线相对于所述连接部弯折设置。
  4. 根据权利要求3所述的继电器，其中，所述焊接部设有所述第一焊接结构和所述第二焊接结构的部分相对于所述动簧本体朝着远离所述底座部分的方向弯折；或，
    所述焊接部设有所述第一焊接结构和所述第二焊接结构的部分相对于所述动簧本体朝着靠近所述底座部分的方向弯折。
  5. 根据权利要求3所述的继电器，其中，所述折线的延伸方向与所述衔铁的长度方向垂直。
  6. 根据权利要求3所述的继电器，其中，沿着所述衔铁的长度方向，所述折线相对于所述第一焊接结构和所述第二焊接结构位于所述连接部的另一侧。
  7. 根据权利要求3所述的继电器，其中，所述动簧本体沿所述衔铁的长度方向的两端分别设有常开动触点和常闭动触点，所述常开动触点与所述常闭动触点之间的连线通过所述折线的中点。
  8. 根据权利要求1所述的继电器，其中，所述焊接部包括：
    本体部，通过所述连接部连接于所述动簧本体，所述第一焊接结构和所述第二焊接结构设于所述本体部上；以及
    加宽部，连接于所述本体部，且沿所述衔铁的宽度方向，所述加宽部与所述第一焊接结构和/或所述第二焊接结构的位置对应。
  9. 根据权利要求8所述的继电器，其中，沿着所述衔铁的长度方向，所述第一焊接结构相对于所述第二焊接结构更靠近所述连接部；
    所述加宽部包括第一加宽段和第二加宽段，所述第一加宽段与所述第一焊接结构的位置对应，所述第二加宽段与所述第二焊接结构的位置对应；
    沿着所述衔铁的宽度方向，所述第一加宽段的尺寸小于所述第二加宽段的尺寸。
  10. 根据权利要求8所述的继电器，其中，沿着所述衔铁的长度方向，所述第一焊接 结构相对于所述第二焊接结构更靠近所述连接部；
    所述加宽部包括第一加宽段和第二加宽段，所述第一加宽段与所述第一焊接结构的位置对应，所述第二加宽段与所述第二焊接结构的位置对应；
    所述第一加宽段在所述衔铁的长度方向上完全覆盖所述第一焊接结构所在位置，所述第二加宽段在所述衔铁的长度方向上完全覆盖所述第二焊接结构所在位置。
  11. 根据权利要求10所述的继电器，其中，沿着所述衔铁的长度方向，所述第一加宽段的起点相对于所述第一焊接结构更靠近所述连接部。
  12. 根据权利要求8所述的继电器，其中，所述第一焊接结构和所述第二焊接结构设于所述焊接部背向所述动簧本体的一侧，所述加宽部设于所述焊接部朝向所述动簧本体的一侧。
  13. 根据权利要求1所述的继电器，其中，所述动簧本体沿所述衔铁的长度方向的两端分别设有常开动触点和常闭动触点，所述常开动触点和所述常闭动触点所在平面与所述衔铁的极面共面设置；或，所述常开动触点和所述常闭动触点所在平面高于所述衔铁的极面。
  14. 根据权利要求1所述的继电器，其中，所述动簧本体朝向所述焊片结构的一侧还设有凹部，所述凹部设置于所述连接部与所述动簧本体的连接处的边缘。
  15. 根据权利要求1所述的继电器，其中，所述焊接部与所述动簧本体共面设置。
  16. 根据权利要求1所述的继电器，其中，所述焊接部包括：
    折弯段，所述折弯段的一端连接于所述连接部；以及
    延伸段，所述延伸段的一端连接于所述折弯段的另一端；所述第一焊接结构和所述第二焊接结构设于所述延伸段；
    其中，所述折弯段与所述连接部连接的部分的宽度小于等于所述延伸段中设有所述第一焊接结构和所述第二焊接结构的部分的宽度。
  17. 根据权利要求16所述的继电器，其中，所述连接部包括：
    第一连接段，一端连接于所述动簧本体；所述第一连接段的宽度大于所述折弯段的宽度，且大于所述延伸段中设有所述第一焊接结构和所述第二焊接结构的部分的宽度；以及
    第二连接段，一端连接于所述第一连接段的另一端，所述第二连接段的另一端连接于所述折弯段；所述第一连接段与所述第二连接段垂直。
PCT/CN2023/120489 2022-09-30 2023-09-21 继电器 WO2024067361A1 (zh)

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CN112863945A (zh) * 2020-12-30 2021-05-28 厦门宏发信号电子有限公司 一种具有高爬电距离的超小型继电器
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US5015978A (en) * 1987-05-29 1991-05-14 Nec Corporation Electromagnetic relay
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CN101669183A (zh) * 2007-04-25 2010-03-10 欧姆龙株式会社 电磁继电器
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