A dry reed relay movement and a dry reed relay

Abstract

The application discloses a dry reed relay core, which comprises a dry reed switch, a coil frame and a lead frame, the dry reed switch comprises two tongue spring sheets and first leading-out pins, the coil frame comprises a middle circular tube-shaped winding part and two head parts connected with two ends of the winding part, the coil frame is provided with an installation through hole, the dry reed switch is installed in the installation through hole, one end of the two tongue spring sheets and the first leading-out pins respectively passes through the two ends of the installation through hole, and the lead frame comprises two tongue spring sheet second leading-out pins; each tongue spring sheet second leading-out pin comprises a first connecting part and a first pin, each head part is provided with a positioning part, the first connecting part of each tongue spring sheet second leading-out pin is positioned after being matched with the positioning part, the first connecting part is close to one end of the tongue spring sheet first leading-out pin, and one end of the tongue spring sheet first leading-out pin is fixedly connected with the first connecting part through soldering to form an electrical connection; the application can ensure the original sealing property of the glass tube of the dry reed switch and ensure the performance of the dry reed switch, and is convenient to assemble.

Description

Technical Field

[0001] This invention relates to the field of reed relay manufacturing technology, and in particular to a reed relay mechanism and a reed relay. Background Technology

[0002] Reed relays are derivatives of reed switch technology. Because reed switches employ a special encapsulation structure (sealed sintering of a glass tube) and process (filling the glass tube with inert gas or vacuum treatment), their reed contacts are protected from external atmospheric pollution and corrosion, thus possessing unparalleled high contact reliability and excellent insulation performance. In fields requiring high insulation and high contact reliability (such as instrument testing, network communication, new energy insulation detection, and medical electronics), reed relays have gained widespread recognition and application.

[0003] Existing reed relays typically include a reed switch, coil frame, coil, lead frame, and housing. The reed switch is the core component of the reed relay, therefore, the manufacturing challenge lies in maximizing the initial sealing performance of the reed switch. In the reed relay structure, because the lead frame forms an electrical connection with the reed switch's reed leads, during component assembly, the lead frame transfers stress to the sintered glass tube section of the reed switch through the reed leads. Since the sintered glass tube section of the reed switch is brittle and prone to breakage, it loses its sealing performance and is damaged, directly affecting the reed switch's performance. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a reed relay mechanism that can ensure the original sealing of the reed switch glass tube, ensure the performance of the reed switch, and facilitate assembly.

[0005] To achieve the above objectives, the technical solution of the present invention is as follows: a reed relay mechanism, comprising a reed switch, a coil frame, and a lead frame. The reed switch includes two reed first leads extending from sintered sections at both ends of a glass tube. The coil frame includes a central cylindrical winding portion and two heads connecting the two ends of the winding portion. A mounting through hole is provided in the middle of the coil frame, penetrating the end faces of the two heads. The glass tube of the reed switch is installed in the mounting through hole of the coil frame. One end of each of the two reed first leads extends from both ends of the mounting through hole. The lead frame includes two reed second leads. Each reed second lead includes a first connecting portion and a first pin. The first pin connects to one end of the first connecting portion. Each head has a positioning portion. After the first connecting portion of each reed second lead is positioned in conjunction with the positioning portion, the first connecting portion is close to one end of a reed first lead. One end of the reed first lead and the first connecting portion are electrically connected by solder welding.

[0006] In a further improvement, the middle section of the first connecting part is provided with an arc-shaped bend. This arc-shaped bend allows space for one end of the first lead of the reed switch, preventing the other end of the first lead from directly contacting the first connecting part before welding. The arc-shaped bend and one end of the first lead of the reed switch are then welded together to form an electrical connection. This not only avoids direct contact between the first connecting part and the lead of the reed switch before welding but also increases the effective welding area between the lead and the first connecting part, improving the weld strength.

[0007] Preferably, the positioning part is a positioning protrusion or positioning groove provided on the end face of the head.

[0008] In a further improvement, the inner diameter of one end of the mounting through-hole is smaller than that of the other end, and the inner surface of the mounting through-hole smoothly transitions from one end to the other. One end of the glass tube is positioned through the inner surface of the mounting through-hole. This ensures accurate positioning between the reed switch and the coil frame, facilitates assembly, and also ensures parameter consistency.

[0009] In a further improvement, the other end of the first connecting portion of the second lead of each reed switch protrudes beyond the head and extends axially along the winding portion with a magnetic coupling portion. The magnetic coupling portions of the two second leads of the reed switches are close to each other but with a gap. Thus, when the reed relay coil is energized, a single air gap magnetic circuit is formed through the two reed switches, the first leads of the reed switches, the first connecting portions of the two second leads of the reed switches, and the two magnetic coupling portions, effectively improving the system's magnetic circuit efficiency and reducing the power consumption of the reed relay coil.

[0010] Furthermore, each of the two magnetic circuit coupling sections has an inclined surface at one end, and the two inclined surfaces are parallel. This inclined surface opening is equivalent to increasing the air gap pole area, improving magnetic efficiency, and further reducing magnetic circuit divergence.

[0011] In a further improvement, the other end of each of the first connecting portions protrudes beyond the head and extends with a positioning protrusion, which engages with the head for positioning. This facilitates better positioning of the second lead of the lead frame's tongue spring against the head of the coil frame.

[0012] Furthermore, the lead frame also includes two coil lead feet, each coil lead foot including a second connecting part and a second pin connected to each other. A coil terminal is fixed to each head of the coil frame by injection molding. The coil terminal has two connecting ends. One connecting end of the coil terminal is wound with one end of the coil, and the other connecting end of the coil terminal is fixed to one side of the second connecting part by welding to form an electrical connection.

[0013] In this way, the coil and the coil lead are electrically connected through the coil terminal fixed to the head of the coil frame. During the coil winding process, both ends of the enameled wire can be wound around one connection end of each of the two coil terminals. Then, the other connection end of each coil terminal is welded to the second connection part of a coil lead. This enables fully automated winding of the coil part (including the coil frame and the coil coil), reducing the winding difficulty. The other connection end of the coil terminal and the second connection part of a coil lead can also be automatically welded, facilitating automated assembly, improving production efficiency and assembly consistency, parameter consistency, and enhancing the reliability of the connection between the two ends of the coil and the coil terminal.

[0014] Furthermore, each coil terminal is L-shaped; the end of the connection end of each coil terminal that is wound around one end of the coil is provided with a chamfer, and the end of the other connection end of each coil terminal that is welded to the second connection part is provided with an arc-shaped groove; the chamfer facilitates the winding of the coil terminal with one end of the coil enameled wire; the arc-shaped groove can increase the effective contact length between the coil terminal and the second connection part, and improve the welding reliability.

[0015] The head has a guide groove at the other connection end near the coil terminal to facilitate the engagement of the connecting part with the other connection end of the coil terminal. A welding protrusion extends outward from one side of the second connecting part. The welding protrusion engages with the other connection end of the coil terminal via the guide groove and is fixed by welding to form an electrical connection. The interaction between the guide groove and the welding protrusion of the second connection part of the coil lead achieves self-positioning assembly of the coil frame and the coil lead, thereby improving assembly accuracy.

[0016] And / or, each of the second connecting portions is further provided with a connecting groove on the other side, and the connecting grooves on the two second connecting portions are respectively welded to both ends of a diode by solder or laser welding. The connecting grooves can be used to limit the diode leads and also increase the effective welding area between the diode leads and the second connecting portion, thereby improving the welding strength.

[0017] In a further improvement, the glass tube of the reed switch contains two reeds. Each reed includes a flexible contact connection part and a contact head that are connected to each other. The two reeds are in contact with each other or separated from each other through the two contact heads. The flexible contact connection part of each reed is fixedly connected to a first lead of the reed. Each first lead of the reed is fixedly connected to a sintered section through an intermediate joint. The intermediate joint of each first lead of the reed is provided with a recess, and the glass of the sintered section is embedded in the recess.

[0018] This design allows the middle joint of the first lead of the reed switch to act as a "locating pin" with the sintered section. On one hand, the recess on the first lead of the reed switch is filled with glass after sintering, increasing the sealing area between the first lead and the glass, enhancing the reliability of the connection between the middle joint of the first lead and the sintered section of the glass tube, increasing the effective area of ​​the gas isolation path between the inside and outside of the glass tube, and further enhancing the sealing reliability of the reed switch. On the other hand, the combination of the glass and the recess allows the middle joint of the first lead of the reed switch and the sintered section to self-locate, which helps ensure the parallelism and contact gap consistency of the two reed contacts. This ensures the relative position of the two contacts on the two reeds, improves the positional accuracy of the contact, and enhances the consistency of the electrical parameters of the reed switch. Simultaneously, it effectively mitigates the rotation or displacement of the reed caused by environmental stress (mainly due to temperature or temperature changes) or mechanical stress, further ensuring the parallelism and contact gap consistency of the two reed contacts, and improving the mechanical and electrical performance stability of the reed switch.

[0019] Furthermore, the flexible contact connection part is a long strip-shaped plate. On the side of the flexible contact connection part near the first lead of the tongue reed, there are notches on both sides of a section. The notches on both sides are symmetrical to each other in the width direction of the flexible contact connection part. The flexible contact connection part is bent along this section, and the bending direction is opposite to the contact movement direction of the tongue reed.

[0020] This design provides greater flexibility near the notch in the flexible contact connection compared to other parts of the connection, acting like a hinge. This ensures sufficient rigidity on the side of the flexible contact connection closer to the sintering section for support, while maintaining appropriate flexibility on the side further away. This effectively reduces the alternating stress generated during rapid engagement or disengagement of the two contacts of the reed switch, preventing direct transmission of stress to the junction of the conductive lead and the sintered glass tube. This prevents damage at the junction and effectively protects the reed switch's seal. Secondly, the bend in the flexible contact connection at the notch acts like a hinge, effectively constraining the bending deformation of the reed during rapid switching between the two contacts. This ensures that the rotation fulcrum of the reed is mainly concentrated at the bend in the flexible contact connection, thus effectively compensating for the inconsistent size of the reed lever arm (the distance from the reed contact head to the rotation fulcrum) caused by the free forming of the glass during sintering. This improves the consistency of the reed's reaction force and further ensures the performance of the reed switch. Thirdly, the notches on both sides are symmetrical in the width direction of the flexible contact connection. This serves two purposes: firstly, it ensures a symmetrical distribution of external forces during reed processing, achieving symmetrical deformation of the reed and avoiding internal stress caused by asymmetrical material deformation; secondly, the two notches can also be used for guiding and positioning during reed bending, ensuring the consistency of the bending line position and compensating for the insufficient precision in the punching process of cylindrical conductive lead-outs due to the inability to use process holes for positioning.

[0021] Furthermore, each reed switch's first lead, located outside the glass tube, has a flattened section near the sintering section. This flattened section facilitates clamping and positioning during the manufacturing of the conductive leads. Secondly, the flattened section provides better flexibility than the conductive lead body, which can reduce the transmission of external stress to the sintering section and thus lessen its impact on sealing reliability. The flattened section is parallel or perpendicular to the contact direction of the contact head. This simplifies the determination of the contact direction between the two contacts, making it better suited for use in reed switch derivatives.

[0022] The contact head, flexible contact connecting part, and first lead-out foot of the tongue reed are integrally stamped, and the upper and lower end faces of the flexible contact connecting part are parallel to the contact surface of the contact head. This facilitates processing and reduces manufacturing costs.

[0023] In this invention, the reed relay mechanism features a first connecting portion of each reed's second lead that, after being positioned in conjunction with the positioning portion, has its first connecting portion positioned close to one end of the first lead of a reed. The first lead of the reed is then soldered to the first connecting portion to form an electrical connection. During assembly, the first connecting portion of each reed's second lead does not directly contact the first lead of the reed; instead, an electrical connection is formed through solder. This prevents the second lead of the lead frame from transferring stress to the first lead of the reed and thus to the sintered section of the glass tube, effectively preventing damage to the sintered section and ensuring the glass tube's seal. Therefore, this invention's reed relay mechanism ensures the original seal of the reed switch glass tube and guarantees the reed switch's performance. Furthermore, this connection structure between the lead frame, coil frame, and reed switch facilitates assembly and enables automated production.

[0024] The present invention also discloses a reed relay, including a housing and the aforementioned reed relay mechanism. The reed relay mechanism is installed inside the housing and is fixedly connected to the housing. The first pins of the second leads of the two reeds extend out of the housing. The two ends of the coil of the reed relay mechanism also extend out of the housing through the two coil leads.

[0025] Furthermore, the housing is fixedly connected to the reed relay core by injection molding; or the housing is fixedly connected to the reed relay core by epoxy resin injection.

[0026] Because the reed relay of the present invention is equipped with the aforementioned reed relay mechanism, the original sealing of the reed switch glass tube can be ensured, thus ensuring the performance of the reed relay. Attached Figure Description

[0027] Figure 1 This is a perspective view of the first embodiment of the reed relay mechanism of the present invention;

[0028] Figure 2 This is another perspective view of the first embodiment of the reed relay mechanism of the present invention;

[0029] Figure 3 This is a cross-sectional view of the reed switch structure of the first embodiment of the reed relay mechanism of the present invention;

[0030] Figure 4 This is a top view of the first embodiment of the reed relay mechanism of the present invention, in which the reed and the first lead of the reed are integrated.

[0031] Figure 5 yes Figure 4 AA section view;

[0032] Figure 6 This is a perspective view of the coil frame of the first embodiment of the reed relay mechanism of the present invention;

[0033] Figure 7 This is a cross-sectional view of the reed switch installed in the coil frame mounting through hole of the first embodiment of the reed relay mechanism of the present invention;

[0034] Figure 8 This is a perspective view of the lead frame of the first embodiment of the reed relay mechanism of the present invention;

[0035] Figure 9 This is a perspective view of the coil terminals of the first embodiment of the reed relay mechanism of the present invention;

[0036] Figure 10 This is a schematic diagram of the coupling path between the lead frame, coil, and reed switch magnetic circuit of the first embodiment of the reed relay mechanism of the present invention;

[0037] Figure 11 This is a perspective view of the lead frame installation state of the first embodiment of the reed relay mechanism of the present invention;

[0038] Figure 12 This is a perspective view of a second embodiment of the reed relay mechanism of the present invention;

[0039] Figure 13 This is a perspective view of the coil frame of the second embodiment of the reed relay mechanism of the present invention;

[0040] Figure 14 This is a perspective view of the lead frame of a second embodiment of the reed relay mechanism of the present invention;

[0041] Figure 15 This is a perspective view of the reed relay of the present invention. Detailed Implementation

[0042] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0043] Example 1 Figures 1 to 11 As shown, a reed relay mechanism includes a reed switch 1, a coil frame 2, a coil 3, and a lead frame 4. The reed switch 1 includes two reed first lead-out feet 13 extending from the sintered sections 12 at both ends of a glass tube 11. The glass tube 11 of the reed switch 1 contains two reeds 14. Each reed 14 includes a flexible contact connecting part 141 and a contact head 142 connected to each other. The two reeds 14 are in contact with each other or separated from each other through the two contact heads 142. The flexible contact connecting part 141 of each reed 14 is fixedly connected to a reed first lead-out foot 13. The upper and lower end faces of the flexible contact connecting part 141 are parallel to the contact surface of the contact head 142. The contact head 142, the flexible contact connecting part 141, and the reed first lead-out foot 13 are integrally stamped.

[0044] Each of the first lead-out pins 13 of the reed is integrally connected to one of the sintered sections 12 via an intermediate joint 13a. The intermediate joint 13a of each first lead-out pin 13 has two recesses 131, each recess 131 having a piece of glass from the sintered section 12 embedded within it. The intermediate joint 13a is cylindrical, and the two recesses 131 are located at the center of the intermediate joint 13a and are evenly spaced along the circumferential direction.

[0045] The flexible contact connection portion 141 is a long strip-shaped plate. A section 14a of the flexible contact connection portion 141 near the first lead-out foot 13 of the tongue reed has corresponding notches 142 on both sides. The notches 142 on both sides are symmetrical in the width direction of the flexible contact connection portion 141. Figure 4 As shown, the notches 21 on both sides are symmetrical with respect to the longitudinal section of line a; the flexible contact connection 141 is bent along this section 14a, and the bending direction is opposite to the contact movement direction of the contact head 142 of the reed 14. Specifically, the bending point is along... Figure 4 The bend is at line b; the cross-section of the notch 142 is an axisymmetric figure with a larger outer diameter and a smaller inner diameter, specifically an isosceles trapezoid or a U-shape, with rounded corners at all four corners of the isosceles trapezoid.

[0046] Each tongue reed outside the glass tube 11 has a flattened section 132 near the sintering section 12 at its first lead-out foot 13. The flattened section 132 is parallel to the contact direction of the contact head 142, or it can be processed to be perpendicular to it.

[0047] The coil frame 2 includes a central cylindrical winding section 21 and two heads 22 connecting the two ends of the winding section 21. The coil frame 2 has a mounting through hole 23 in the middle, which penetrates the end faces of the two heads 22. The glass tube 11 of the reed switch 1 is installed in the mounting through hole 23 of the coil frame 2. One end of the first lead-out foot 13 of the two tongue reeds passes out from both ends of the mounting through hole 23.

[0048] Figure 7 As further shown, the inner diameter D2 of one end of the mounting through hole 23 is smaller than the inner diameter D1 of the other end, and the inner surface of the mounting through hole 23 smoothly transitions from one end to the other. One end of the glass tube 11 is positioned through the inner surface of the mounting through hole 23. Then, local glue is applied to fix the glass tube 11 of the reed switch 1 to the coil frame 2.

[0049] Further integration Figure 1 , Figure 2 , Figure 6 and Figure 8As shown, the lead frame 4 includes two reed second lead-out pins 41 and two coil lead-out pins 42. Each reed second lead-out pin 41 includes a first connecting part 411 and a first pin 412. The first pin 412 is connected to one end of the first connecting part 411. Each head 22 is provided with a positioning part. After the first connecting part 411 of each reed second lead-out pin 41 is positioned in cooperation with the positioning part, the first connecting part 411 is close to one end of a reed first lead-out pin 13. One end of the reed first lead-out pin 13 is electrically connected to the first connecting part 411 by welding. Specifically, the middle section of the first connecting part 411 is provided with an arc-shaped bending section 41a. The arc-shaped bending section 41a makes way for one end of the first lead-out foot 13 of the tongue reed so that the other end of the first lead-out foot 13 of the tongue reed does not directly contact the first connecting part 411 before welding. The arc-shaped bending section 41a and one end of the first lead-out foot 13 of the tongue reed are fixed together by soldering to form an electrical connection.

[0050] The positioning part on each head 22 of the coil frame 2 is a positioning groove 24 provided on the end face of the head 22. The positioning groove 24 includes an upper groove 241 and a lower groove 242 corresponding to each other. The upper groove 241 is formed by the inner side of two upper protrusions 2411 extending outward from the end face of the head 22 and the end face of the head 22. Each upper protrusion 2411 is also provided with an upper guide slope 2412 on its outer side. The lower groove 242 is formed by the inner side of two lower protrusions 2421 extending outward from the end face of the head 22. The face and the end face of the head 22 are formed. Each lower protrusion 2421 is also provided with a lower guide slope 2422 on the outer side. The upper guide slope 2412 and the lower guide slope 2422 are provided so that the first connecting part 411 of the second lead-out foot 41 of the lead frame 4 can be inserted, so that the first connecting part 411 of the second lead-out foot 41 of the lead frame 4 cooperates with the positioning groove 24 for positioning. Specifically, the first connecting part 411 of the second lead-out foot 41 of the lead frame 4 cooperates with the upper groove 241 and the lower groove 242 for positioning.

[0051] The other end of the first connecting portion 411 of each second lead-out foot of the reed protrudes beyond the head 22 and extends axially along the winding portion 21 with a magnetic coupling portion 413. The magnetic coupling portions 413 of the two second lead-out feet of the reed protrusions are close to each other but with a gap. Each of the two magnetic coupling portions 413 has a bevel 4131 at one end opposite to each other, and the two bevels 4131 are parallel.

[0052] like Figure 10 As further shown, when coil 3 is energized, it generates a magnetic field, which causes the contacts 142 of the two reeds of reed switch 1 to engage with each other. The magnetic field is coupled through two magnetic circuit coupling parts 413 (e.g., Figure 10 (As shown by the dashed line in the image), this effectively enhances the magnetic field strength and reduces the energy consumption of the reed relay.

[0053] Each of the first connecting portions 411 has its other end protruding outside the head 22 and extending with a positioning protrusion 414, which is positioned in conjunction with the head 22. Figure 8 As further shown, the positioning protrusion 414 in this embodiment is formed by the downward extension of the magnetic circuit coupling portion 413.

[0054] Each coil lead 42 includes a second connecting part 421 and a second pin 422 that are interconnected. A coil terminal 43 is fixed to each head 22 of the coil frame 2 by injection molding. The coil terminal 43 has two connecting ends. One connecting end 431 of the coil terminal 43 is wound around one end of the coil 3, and the other connecting end 432 of the coil terminal 43 is fixed to one side of the second connecting part 421 by welding to form an electrical connection.

[0055] Each coil terminal 43 is L-shaped; the end of the connection end 431 to which each coil terminal 43 is wound with one end of the coil is provided with a chamfer 4311, and the end of the other connection end 432 to which each coil terminal 43 is welded with the connection part is provided with an arc-shaped groove 4321; the chamfer 4311 facilitates the winding of the coil terminal 43 with one end of the enameled wire of the coil 3; the arc-shaped groove 4321 can increase the effective contact length between the coil terminal 2 and the second connection part 421, and improve the welding reliability.

[0056] Each of the second connecting parts 421 is also provided with a connecting groove 4211 on the other side. The connecting grooves 4211 on the two second connecting parts 421 are respectively welded to the two ends of a freewheeling diode 5 by solder or laser welding.

[0057] In this embodiment, the two first pins 412 and the two second pins 422 are parallel to each other.

[0058] like Figure 11 As shown, in this embodiment, the lead frame 4 can be manufactured by stamping two reed second lead pins 41 and two coil lead pins 42 using a substrate 10 as the raw material. During the molding process, the two reed second lead pins 41 and the two coil lead pins 42 are all connected to the substrate 10. Then, they are assembled together with the coil frame 2, the coil 3, the reed switch 1, and the diode 5, and then... Figure 11 The dotted lines are cut off. This facilitates automated assembly, improves assembly accuracy, and ensures the reliability of connections at each joint.

[0059] Example 2, Figures 12 to 14As shown, a reed relay mechanism differs from Embodiment 1 in that: the positioning part on each head 22 of the coil frame 2 is a positioning protrusion 25 provided on the end face of the head 22. The positioning protrusion 25 is positioned by cooperating with the first connecting part 411 of the second lead-out foot 41 of the reed through one side 251. The other side of the positioning protrusion 25 is also provided with a guide slope 252.

[0060] The head 22 is provided with a guide groove 26 at another connection end 432 of the coil terminal 43, which facilitates the second connection part 421 to fit with the other connection end 432 of the coil terminal 43. A welding protrusion 4212 extends outward from one side of the second connection part 421. The welding protrusion 4212 fits with the other connection end 432 of the coil terminal 43 through the guide groove 26 and is fixed by welding to form an electrical connection.

[0061] Figure 15 As shown, a reed relay includes a housing 20 and a reed relay mechanism as described in Embodiment 1 or Embodiment 2. The reed relay mechanism is installed inside the housing 20 and is fixedly connected to the housing 20. The two first pins 412 and the two second pins 422 extend out of the housing 20.

[0062] The housing 20 can be fixedly connected to the reed relay core by injection molding; or the housing 20 can be fixedly connected to the reed relay core by injection of epoxy resin.

[0063] Although the invention has been specifically shown and described in conjunction with preferred embodiments, those skilled in the art should understand that various changes in form and detail may be made to the invention without departing from the spirit and scope of the invention as defined in the appended claims, all of which shall be within the scope of protection of the invention.

Claims

1. A reed relay mechanism, comprising a reed switch, a coil frame, and a lead frame, wherein the reed switch includes two reed first leads extending from sintered sections at both ends of a glass tube, the coil frame includes a central cylindrical winding portion and two heads connecting the two ends of the winding portion, a mounting through hole is provided in the middle of the coil frame, the mounting through hole penetrates the end faces of the two heads, the glass tube of the reed switch is installed in the mounting through hole of the coil frame, and one end of each of the two reed first leads extends from both ends of the mounting through hole, characterized in that: The lead frame includes two reed second leads; Each second lead of the reed switch includes a first connecting part and a first pin. The first pin is connected to one end of the first connecting part. Each head is provided with a positioning part. After the first connecting part of each second lead of the reed switch is positioned in cooperation with the positioning part, the first connecting part is close to one end of the first lead of the reed switch. The middle section of the first connecting part is provided with a bent section. The bent section makes way for one end of the first lead of the reed switch so that one end of the first lead of the reed switch does not directly contact the first connecting part before soldering. The bent section of the first connecting part and one end of the first lead of the reed switch are fixed together by soldering to form an electrical connection. The inner diameter of one end of the mounting through hole is smaller than that of the other end, and the inner surface of the mounting through hole smoothly transitions from one end to the other. One end of the glass tube is positioned through the inner surface of the mounting through hole.

2. The reed relay mechanism according to claim 1, characterized in that: The bent section is an arc-shaped bent section.

3. The reed relay mechanism according to claim 1, characterized in that: The positioning part is a positioning protrusion or positioning groove provided on the end face of the head.

4. The reed relay mechanism according to claim 1, characterized in that: The other end of the first connecting portion of the second lead of each reed protrudes outside the head and extends a magnetic coupling portion along the axial direction of the winding portion. The magnetic coupling portions of the two second leads of the reed are close to each other but with a gap.

5. A reed relay mechanism according to claim 4, characterized in that: Both magnetic circuit coupling parts have inclined surfaces at opposite ends, and the two inclined surfaces are parallel.

6. A reed relay mechanism according to claim 1, characterized in that: The other end of each of the first connecting portions protrudes outside the head and extends with a positioning protrusion that engages with the head for positioning.

7. A reed relay mechanism according to claim 1, characterized in that: The lead frame also includes two coil lead feet, each coil lead foot including a second connecting part and a second pin connected to each other. A coil terminal is fixed to each head of the coil frame by injection molding. The coil terminal has two connecting ends. One connecting end of the coil terminal is wound with one end of the coil, and the other connecting end of the coil terminal is fixed to one side of the second connecting part by welding to form an electrical connection.

8. A reed relay mechanism according to claim 7, characterized in that: Each coil terminal is L-shaped; the end of the connection end of each coil terminal that is wound around one end of the coil is chamfered, and the end of the other connection end of each coil terminal that is welded to the second connection part is provided with an arc-shaped groove; the head is provided with a guide groove at the other connection end of the coil terminal to facilitate the second connection part to fit with the other connection end of the coil terminal, and a welding protrusion extends outward from one side of the second connection part, the welding protrusion fits with the other connection end of the coil terminal through the guide groove and is fixed by welding to form an electrical connection; and / or each second connection part is also provided with a connection groove on the other side, and the connection grooves on the two second connection parts are respectively fixed to the two ends of a diode by solder or laser welding.

9. A reed relay mechanism according to any one of claims 1 to 8, characterized in that: The glass tube of the reed switch contains two reeds. Each reed includes a flexible contact connection part and a contact head that are connected to each other. The two reeds are in contact with each other or separated from each other through the two contact heads. The flexible contact connection part of each reed is fixedly connected to a first lead of the reed. Each first lead of the reed is fixedly connected to a sintered section through an intermediate joint. The intermediate joint part of each first lead of the reed is provided with a pit, and the glass of the sintered section is embedded in the pit.

10. A reed relay mechanism according to claim 9, characterized in that: The flexible contact connection is a long strip-shaped plate. There is a section on both sides of the flexible contact connection near the first lead of the tongue reed. The notches on both sides are symmetrical to each other in the width direction of the flexible contact connection. The flexible contact connection is bent along this section, and the bending direction is opposite to the contact movement direction of the tongue reed.

11. A reed relay mechanism according to claim 9, characterized in that: Each tongue reed located outside the glass tube has a flattened section near the sintering section at its first lead-out foot. The flattened section is parallel or perpendicular to the contact direction of the contact head. The contact head, flexible contact connecting part, and first lead-out foot of the tongue reed are integrally stamped, and the upper and lower end faces of the flexible contact connecting part are parallel to the contact surface of the contact head.

12. A reed relay, comprising a housing, characterized in that: It also includes the reed relay mechanism as described in any one of claims 1-11, wherein the reed relay mechanism is installed inside the housing and is fixedly connected to the housing, the first pin of the second lead of the two reeds extends out of the housing, and the two ends of the coil of the reed relay mechanism also extend out of the housing through the two coil lead.

13. A reed relay according to claim 12, characterized in that: The housing is fixedly connected to the reed relay core by injection molding; or the housing is fixedly connected to the reed relay core by epoxy resin injection.

Images