Dry reed relay with high sealing performance

Abstract

The invention discloses a dry reed relay with high sealing performance, which comprises a base, a coil frame and a dry reed switch, and is characterized in that the dry reed switch comprises a glass tube, the glass tube penetrates through the coil frame, reed leading-out ends respectively penetrate out of sintering positions at two ends of the glass tube, and the reed leading-out ends are respectively and electrically connected with leading-out pins correspondingly arranged on the base; at least one first supporting table is arranged on the base, and the part, located outside the coil frame, of the glass tube abuts against the first supporting table so that the first supporting table can provide supporting. According to the invention, the supporting mode of the reed switch is changed from two reed leading-out ends to a mode that the glass tube is supported by at least one first supporting table, and a part of stress of the reed switch can be transferred to the glass tube, so that the risk that the sintering sealing interface of the glass tube is damaged due to concentrated stress is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of relays, and in particular to a reed relay with high sealing performance. Background Art

[0002] A reed relay uses the magnetic field generated by current passing through a coil to directly magnetize a reed switch, causing it to switch on or off. Compared to traditional electromagnetic relays, reed relays have the advantage of completely sealed contacts. Their simple structure, fast operation, high sensitivity, stable operation, and long contact life have led to their widespread use.

[0003] like Figure 1 As shown, conventional reed relays typically include a base 1', a reed switch 2', and a coil bobbin 3'. The reed switch 2' includes a glass tube 21' and two reed blades mounted within the glass tube 21', capable of contacting or disengaging one another. The glass tube 21' is inserted through the coil bobbin 3'. The two reed blade lead ends 22' and 23' extend from the sintered ends of the glass tube 21' and are electrically connected to lead pins 4' on the base 1'. Therefore, the reed relay relies solely on the lead pins 4' on the base 1' for support and is secured by welding. This structure causes the sealing interface of the sintered section of the reed switch's glass tube (where the reed blades meet the glass tube) to be directly subjected to multiple forces: the reed switch's own weight, stress from warping of the base, and disturbance stress caused by external vibration, increasing the risk of damaging the reed switch's seal. Summary of the Invention

[0004] The present invention addresses the technical problems existing in the prior art and provides a reed relay with high sealing performance. By changing the support method of the reed switch, the risk of damage caused by concentrated force on the sintered sealing interface of the glass tube of the reed switch is reduced.

[0005] The technical solution adopted by the present invention to solve its technical problems is: a reed relay with high sealing performance, including a base, a coil frame and a reed switch, the reed switch including a glass tube, the glass tube being inserted into the coil frame, and tongue reed lead ends extending from the sintered parts at both ends of the glass tube, each tongue reed lead end being electrically connected to a corresponding lead pin provided on the base; the base is provided with at least one first support platform, and the portion of the glass tube located outside the coil frame contacts the first support platform to provide support.

[0006] Furthermore, the glass tube has a first end and a second end opposite to each other along its axial direction, and the number of the first support platform is one. The first support platform is located on one side of the coil frame in the axial direction, and the first end of the glass tube contacts the first support platform.

[0007] Furthermore, the glass tube is arranged to be inclined relative to the base, and the distance between the first end of the glass tube and the base is smaller than the distance between the second end of the glass tube and the base.

[0008] Furthermore, the supporting surface of the first supporting platform in contact with the glass tube is inclined, and the higher end of the supporting surface is close to the coil frame, and the lower end of the supporting surface is away from the coil frame, so that the glass tube is inclined relative to the base.

[0009] Furthermore, a second support platform is provided on the base, and the tongue reed lead end located at the second end portion of the glass tube contacts the second support platform to provide support; the lowest point of the support surface of the second support platform for the tongue reed lead end is higher than the lowest point of the support surface of the first support platform for the glass tube.

[0010] Furthermore, the glass tube is provided with a chimney column extending radially thereof near its first end portion, the chimney column rests on the first supporting platform, and a limiting protrusion is provided on the first supporting platform on the side of the chimney column facing away from the coil frame, and the chimney column is limited between the limiting protrusion and the coil frame.

[0011] Furthermore, the first support platform is L-shaped when viewed from above, including a first side and a second side, and its first side extends in a horizontal direction perpendicular to the axial direction of the coil frame, and provides support for the first end of the glass tube, and its second side extends in the axial direction of the coil frame toward the side close to the coil frame, and provides support for the chimney column, and the limiting protrusion is arranged on the second side of the first support platform.

[0012] Furthermore, the first support platform is provided with a first arc surface adapted to and in contact with the outer surface of the glass tube; the second support platform is provided with a second arc surface adapted to the outer surface of the cylindrical section of the tongue reed lead end supported by it.

[0013] Furthermore, the second support platform is provided with a guide groove, which is through-shaped at both ends of the coil frame in the axial direction, and when the reed switch is installed in the coil frame, the guide groove cooperates with the flattened part of the tail of the tongue reed lead-out end supported by the second support platform to provide guidance and clearance.

[0014] Furthermore, the portion of the glass tube located in the coil frame is in clearance fit with the coil frame.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. Because the base is provided with at least one first support platform, the portion of the glass tube located outside the winding bobbin contacts the first support platform and is supported by the first support platform. This allows the present invention to change the support method for the reed switch from two reed lead ends to a method in which the glass tube is supported by at least one first support platform. This allows at least a portion of the force applied to the reed switch to be transferred to the glass tube, thereby reducing the risk of damage to the sintered sealing interface of the glass tube due to concentrated force.

[0017] 2. Because the glass tube is tilted relative to the base, and the distance between the first end of the glass tube and the base is smaller than the distance between the second end of the glass tube and the base, the reed switch's center of gravity shifts toward the side closer to the first support platform. Ultimately, the glass tube bears the force of the main body, weakening the force on the lead end of the reed, further reducing the risk of force being directly transmitted to the sealing interface of the sintered section of the glass tube. Furthermore, when a chimney column is provided near the first end of the glass tube, the chimney column further shifts the reed switch's center of gravity toward the first support platform. In particular, the inclined support surface of the first support platform in contact with the glass tube can increase the contact area between the first support platform and the glass tube, improve the first support platform's support effect on the glass tube, and reduce stress concentration.

[0018] 3. Because the first support platform is provided with a limiting protrusion, the chimney column provided along the radial direction of the portion of the glass tube near the first end thereof contacts the first support platform and is located between the limiting protrusion and the coil frame. Therefore, the chimney column can limit the glass tube in the axial direction and prevent it from rotating in the radial direction, thereby forming a full constraint on the reed switch in a stress-free state. This ensures the positional accuracy of the reed switch in the coil frame and improves the consistency of electrical parameters.

[0019] 4. The portion of the glass tube located in the coil frame is in a clearance fit with the coil frame, which can prevent the coil frame from deforming and squeezing the reed switch, thereby damaging its sealing.

[0020] 5. The first arc surface on the first support platform and the guide groove on the second support platform enable the reed switch and the base to have a self-positioning effect, which can reduce the difficulty of assembling the reed switch into the coil frame.

[0021] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments; however, the reed relay of the present invention is not limited to the embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 Schematic diagram of the three-dimensional structure of a reed relay in the prior art (partially shown);

[0023] Figure 2 It is an exploded schematic diagram of the present invention (excluding the housing);

[0024] Figure 3 It is a schematic diagram of the three-dimensional structure of the base of the present invention;

[0025] Figure 4 is a top view of the base of the present invention;

[0026] Figure 5 yes Figure 4 AA cross-sectional view;

[0027] Figure 6 It is a schematic diagram of the three-dimensional structure of the coil frame of the present invention;

[0028] Figure 7 It is a schematic diagram of the three-dimensional structure of the base and the coil frame of the present invention in an assembled state;

[0029] Figure 8 This is a front view of the base and coil frame of the present invention in an assembled state;

[0030] Figure 9 It is a schematic diagram of the three-dimensional structure of the base, coil frame and reed switch of the present invention in the assembled state;

[0031] Figure 10 This is a front view of the base and reed switch of the present invention in the assembled state;

[0032] Figure 11 is a front view of the base of the present invention;

[0033] Figure 12 It is a top view of the base, coil frame and reed switch of the present invention in the assembled state;

[0034] Figure 13 yes Figure 12 BB cross-sectional view;

[0035] Figure 14 yes Figure 12 CC cross-sectional view;

[0036] Figure 15 It is a schematic diagram of the three-dimensional structure of the present invention;

[0037] Figure 16 It is a bottom view of the present invention;

[0038] Figure 17 yes Figure 16 DD cross-sectional view;

[0039] Figure 18 yes Figure 16 EE cross-sectional view;

[0040] Figure 19 This is a schematic diagram of the structure of the housing and the coil frame in the combined state of the present invention. Figure 1 ;

[0041] Figure 20 This is a schematic diagram of the structure of the housing and the coil frame in the combined state of the present invention. Figure 2 ;

[0042] In the figure, 1 / 1', base, 11, groove, 111, sink, 112, chamfer, 12, 13, positioning hole, 14, first support platform, 141, limiting protrusion, 142, first arc surface, 15, second support platform, 151, guide groove, 152, second arc surface, 16, exhaust notch, 2 / 2', reed switch, 21 / 21', glass tube, 211, chimney column, 22 / 23 / 22' / 23', tongue reed lead end, 221, flattened part, 3 / 3', coil frame, 4', lead pin, 31, winding tube, 32, flange, 321, positioning column, 4, coil, 5, first lead pin, 6, second lead pin, 7, shell, 71, positioning groove, 72, rib. DETAILED DESCRIPTION

[0043] In the present invention, the terms "first", "second", etc. are only used to distinguish similar objects, rather than to describe a specific order or sequence, and cannot be understood as indicating or implying relative importance. In the description, the directions or positional relationships indicated by "upper", "lower", "left", "right", "inner", "outer", "top / bottom", etc. are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, rather than indicating or implying that the device referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present invention. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0044] In addition, in the description of the present invention, unless otherwise specified, "plurality" means two or more. In the description of the present invention, unless otherwise specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection, a mechanical connection, an electrical connection, a direct connection, an indirect connection through an intermediate medium, or a communication between two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0045] See Figure 2-14As shown, a reed relay according to the present invention comprises a base 1, a coil bobbin 3, and a reed switch 2. The coil bobbin 3 comprises a bobbin 31 around which a coil 4 is wound, and two flanges 32, one at each end of the bobbin 31. The coil bobbin 3 is fixed horizontally to the base 1. First lead pins 5 electrically connected to the first lead pins 5 are mounted on the base 1 at the ends of the coil 4. The reed switch 2 comprises a glass tube 21 and two reed tongues mounted within the glass tube 21 and capable of contacting or separating from each other. The glass tube 21 is inserted through the bobbin 31. The lead ends of the two reed tongues (referred to as reed lead ends 22 and 23) extend from the sintered portions at the ends of the glass tube 21 and are electrically connected to corresponding lead pins (referred to as second lead pins 6 for ease of distinction) provided on the base 1. In other embodiments, the glass tube has more than two reed leads, two of which can contact or separate from each other, and the leads of the two reeds pass through the sintered portions at both ends of the glass tube respectively.

[0046] In this embodiment, the base 1 is provided with at least one first support platform 14. The portion of the glass tube 21 located outside the winding bobbin 31 abuts against this first support platform 14, providing support therefor. Specifically, there is one first support platform 14, which is located on one side of the coil bobbin 3 in the axial direction. The glass tube 21 has a first end and a second end that are opposite to each other along the axial direction. The first end of the glass tube 21 abuts against the first support platform 14.

[0047] In this embodiment, the glass tube 21 is arranged at an angle relative to the base 1, and the distance between the first end of the glass tube 21 and the base 1 is smaller than the distance between the second end of the glass tube 21 and the base 1. The support surface of the first support platform 14 in contact with the glass tube 21 is inclined, and the higher end of the support surface is close to the coil frame 3, and the lower end of the support surface is away from the coil frame 3, so that the contact area of the glass tube 21 with the first support platform 14 is larger, thereby improving the supporting effect of the first support platform 14 on the glass tube 21 and reducing stress concentration. Specifically, the angle β between the support surface of the first support platform 14 in contact with the glass tube 21 and the horizontal plane is greater than 90° and less than 180°, such as Figure 11 As shown. In this way, the center line L1 of the reed switch 2, which was originally horizontal, becomes the center line L2 in an inclined state with the left side higher and the right side lower. There is an angle α between the center line L1 and the center line L2, as shown. Figure 10 As shown, the center of gravity of the reed switch 2 is shifted toward the side closer to the first support platform 14, ultimately allowing the glass tube 21 to bear the main force, thereby weakening the force on the lead end of the reed, and reducing the risk of the force being directly transmitted to the sealing interface of the sintered section of the glass tube 21.

[0048] A chimney column 211 extending radially from the glass tube 21 is provided near the first end thereof. The chimney column 211 contacts the first support platform 14. A limiting protrusion 141 is provided on the first support platform 14 on the side of the chimney column 211 facing away from the coil frame 3. The chimney column 211 is limited between the limiting protrusion 141 and the coil frame 3. Figure 9 As shown, the chimney column 211 can limit the glass tube 21 in the axial direction and prevent rotation in the radial direction of the glass tube 21, thereby fully constraining the reed switch 2 in a stress-free state. This ensures the position accuracy of the reed switch 2 within the coil bobbin 3 and improves the consistency of electrical parameters.

[0049] In this embodiment, the portion of the glass tube 21 located in the coil frame 1 is loosely fitted with the coil frame 3 , thereby preventing the coil frame 3 from deforming and squeezing the reed switch 2 and damaging its sealing.

[0050] like Figure 4 As shown, the first support platform 14 is L-shaped when viewed from above, but this is not limiting. In other embodiments, the first support platform may also be U-shaped. In this embodiment, the first support platform 14 includes a first side and a second side. The first side extends in a horizontal direction perpendicular to the axial direction of the coil bobbin 3 (also the width direction of the base 1) and provides support for the first end of the glass tube 21. The second side extends in the axial direction of the coil bobbin 3 (also the length direction of the base 1) toward the side closer to the coil bobbin 3 and provides support for the chimney column 211. The aforementioned stopper 141 is provided on the second side of the first support platform 14.

[0051] In this embodiment, if Figure 3 As shown, the base 1 is also provided with a second support platform 15. The reed lead end 22 located at the second end of the glass tube 21 abuts against this second support platform 15, providing support. The lowest point of the second support platform 15's support surface for the reed lead end 22 is higher than the lowest point of the first support platform 14's support surface for the glass tube 21, thereby achieving an inclined position of the glass tube 21 relative to the base 1. The second support platform 15 is provided with a guide groove 151. The guide groove 151 extends through both ends of the coil bobbin 3 in the axial direction. When the reed switch 2 is installed in the coil bobbin 3, the guide groove 151 cooperates with the flattened portion 221 at the rear of the reed lead end 22 supported by the second support platform 15 to provide guidance and clearance. The axis of the chimney column 211 is perpendicular to the flattened surface of the flattened portion 221, so that when the glass tube 2 is inserted into the coil frame 3 and the flattened portion 221 passes through the guide groove 151, the chimney column 211 can be rotated 180° around its axis to contact the second side of the first support platform 14 and be limited between the limiting protrusion 141 and the coil frame 3.

[0052] like Figure 12-14As shown, the first support platform 14 is provided with a first curved surface 142 that adapts to and contacts the outer surface of the glass tube 21, and the second support platform 15 is provided with a second curved surface 152 that adapts to and contacts the outer surface of the cylindrical section of the tongue reed lead end 22 that it supports. Specifically, there are two second curved surfaces 152, and the two second curved surfaces 152 are respectively located at the top of the two opposite side surfaces of the guide groove 151. The lowest point of the support surface of the second support platform 15 for the tongue reed lead end (i.e., the second curved surface 152) is higher than the lowest point of the support surface of the first support platform 14 for the glass tube 21 (i.e., the second curved surface 152), and the height difference between the two is H, as shown in FIG. Figure 5 The first arc surface 142 can support the glass tube 21 and provide radial limitation for the glass tube 21 , and the second arc surface 152 can provide radial limitation for the reed lead-out end 22 supported by the second support platform 15 .

[0053] In this embodiment, the two flanges 32 of the coil bobbin 3 are respectively embedded and assembled on the base 1. Specifically, the two flanges 32 of the coil bobbin 3 are respectively nested and engaged with at least one groove 11 provided on the base 1. The two flanges 32 are in contact with the bottom surface of the groove 11, and at least one side surface of the two flanges 32 in the axial direction of the coil bobbin 3 abuts against the corresponding inner side surface of the groove 11. This allows the coil bobbin 3 to counteract partial warping and deformation of the base 1 while also enhancing the overall structural rigidity.

[0054] In this embodiment, the number of grooves 11 is one, and the two flange portions 32 are nested and matched with the same groove 11, but it is not limited to this. In other embodiments, the number of grooves is two, and the two grooves are distributed along the axial direction of the coil frame, and the two flange portions are nested and matched with the two grooves one by one.

[0055] like Figure 3 As shown, the groove 11 is specifically formed by a recessed platform 111 provided on the top surface of the base 1. Furthermore, the groove 11 is formed through-hole at both ends in a horizontal direction perpendicular to the axial direction of the coil bobbin 3. This increases the warping deformation of the base 1, but the deformation tends to be in the negative direction. Chamfers 112 are provided on the tops of the two inner side surfaces of the groove 11 that oppose each other in the axial direction of the coil bobbin 3 to guide the two flange portions 32 of the coil bobbin 3 when they are inserted into the groove 11. In other embodiments, the groove is formed by the gap between two protrusions spaced apart on the top surface of the base.

[0056] like Figure 3-Figure 5As shown, the base 1 is provided with at least one glue injection port 12 at a position between the two flange portions 32 of the coil frame 3 (specifically, the middle portion of the sink 111). In this embodiment, there are multiple glue injection ports 12, and the multiple glue injection ports 12 are arranged along the length direction of the base 2, and there is a connecting portion between adjacent glue injection ports 12, which helps to improve the strength of the base 1. The number of glue injection ports 12 is specifically two, but not limited to this. When two glue injection ports 12 are provided, the size of the glue injection ports 12 is larger, so that the glue injection ports 12 can also play a role in exhausting while injecting glue, and the connecting portion between the two glue injection ports 12 can improve the strength of the base 1.

[0057] like Figure 6 As shown, the two flanges 32 are provided with one or more positioning posts 321 extending downward on the side facing the bottom of the groove 11. Specifically, two positioning posts 321 are provided at the bottom end of each flange 32. The two positioning posts 321 are arranged along the width direction of the base 1. Figure 3 As shown, the bottom surface of the groove 11 is provided with a positioning hole 13 that passes through the bottom surface and corresponds to each positioning column 321. Each positioning column 321 is respectively provided in the corresponding positioning hole 13. Figure 7 、 Figure 8 As shown, in this way, the coil frame 3 and the base 1 can be fully constrained, thereby constraining the position of the coil frame 3 and further strengthening the overall structural rigidity.

[0058] like Figures 15-20 As shown, the present invention further includes a housing 7 with an opening at one end, the coil frame 3 and the reed switch 2 are located in the housing 7, the base 1 fits in the open end of the housing 7, and the two are clearance-fitted, and the coil frame 3 is fixedly fitted to the housing 7.

[0059] In this embodiment, a limiting structure is provided on the inner surface of the housing 7. The limiting structure comprises at least one set of limiting surfaces. Each set of limiting surfaces includes two limiting surfaces disposed opposite each other in the length or width direction of the housing 7. The two limiting surfaces abut against at least one flange portion 32 of the coil former 3. Specifically, the two limiting surfaces are distributed along the length of the housing 7, with the two flange portions 32 located between the two limiting surfaces. The two limiting surfaces abut against the opposing outer side surfaces of the two flange portions 32 of the coil former, respectively. In other embodiments, the two limiting surfaces abut against two outer side surfaces of one of the flange portions of the coil former, facing away from each other.

[0060] In this embodiment, the limiting structure includes at least one positioning groove 71 provided on the inner surface of the housing 7. The two opposing side surfaces of the positioning groove 71 constitute the two limiting surfaces. The limiting structure includes at least two sets of limiting surfaces, specifically two sets, but not limited thereto. The two sets of limiting surfaces are distributed along the width direction of the housing 7. Therefore, there are two positioning grooves 71.

[0061] As a preferred structure, the positioning groove 71 is formed by the interval between two ribs 72 arranged side by side on the inner surface of the shell 7. The two ribs 72 are specifically located on the inner side surface of the shell 7, and each rib 72 extends along the height direction of the shell 7, so that the shell 7 is easier to demold during injection molding. In other embodiments, the two ribs are located on the inner top surface of the shell. In other embodiments, the positioning groove is formed by a groove opened on the inner side surface of the shell. Glue is poured into the shell 7 to improve the insulation of internal components and improve the overall anti-drop and anti-vibration performance. The shell 7 is poured with potting glue, and the potting glue is poured from the glue injection port 11 on the base. Since the glue injection port 11 is relatively large, the glue injection port 11 can also play a role in exhaust while pouring glue. One or more exhaust slots 12 are provided at the edge of the base 1. Specifically, as Figure 2 As shown, the multiple exhaust notches 12 are divided into two groups. Each group of exhaust notches 12 is located at both ends of the base 1 in the longitudinal direction. Each group includes two exhaust notches 12, and the two exhaust notches 12 are arranged along the width of the base 1. Each exhaust notch 12 is roughly semicircular in shape when viewed from above. The provision of exhaust notches 12 enables the present invention to achieve multiple exhaust locations, improving the exhaust effect during glue pouring.

[0062] The provision of a first support platform 14 in a reed relay according to the present invention allows the support method for the reed switch 2 to be changed from two reed lead terminals 22 and 23 to at least one first support platform 14 supporting the glass tube 21. This allows a portion of the force acting on the reed switch 2 to be transferred to the glass tube 21, thereby reducing the risk of damage to the sintered seal interface of the glass tube 21 due to concentrated force. Specifically, the glass tube 21 is tilted relative to the base 1, shifting the center of gravity of the reed switch 2 toward the side closer to the first support platform 14. Ultimately, the glass tube 21 bears the main force, while simultaneously weakening the force acting on the reed lead terminals, further reducing the risk of direct force transmission to the sintered seal interface of the glass tube 21.

[0063] After the two flanges 32 of the coil frame 3 of the present invention are nested with the grooves 11 on the base 1, the nested coil frame 3 is equivalent to an I-shaped reinforcement rib. Figure 8 As shown, the overall structural rigidity is enhanced and the warping of the base 1 is counteracted, thereby preventing or reducing the stress generated by the warping of the base 1 from being transmitted to the reed switch 2, causing compression or stretching of the reed switch 2 and damaging the sealing of the reed switch 2. In particular, the two flanges 32 of the coil bobbin 3 and the base 1 further cooperate through a post-hole structure to constrain the position of the coil bobbin 3 and further enhance the overall structural rigidity.

[0064] The housing 7 of the present invention is loosely fitted with the base 1, and the housing 7 is fixedly connected to the two flange portions 32 of the coil frame 3, so that the present invention can not only indirectly fix the base 1 and the housing 7 relative to each other through the coil frame 3, but also avoid direct contact connection between the base 1 and the housing 7 (such as a snap connection, etc.) to avoid secondary stress on the base 1, thereby further avoiding the risk of increasing the risk of damaging the sealing of the reed switch 2.

[0065] The present invention provides a reed relay with high sealing performance, and the unrelated parts are the same as those in the prior art or can be implemented by using the prior art.

[0066] The above embodiments are only used to further illustrate a reed relay with high sealing performance of the present invention, but the present invention is not limited to the embodiments. Any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention fall within the scope of protection of the technical solution of the present invention.

Claims

1. A reed relay with high sealing performance, comprising a base, a coil bobbin, and a reed switch. The reed switch comprises a glass tube, which is inserted through the coil bobbin. Reed leads extend from the sintered ends of the glass tube, and each reed lead is electrically connected to a corresponding lead pin on the base. The following are characteristics: At least one first supporting platform is provided on the base, and a portion of the glass tube located outside the coil frame contacts the first supporting platform to be supported by the first supporting platform.

2. The reed relay with high sealing performance according to claim 1, characterized in that: The glass tube has a first end and a second end opposite to each other along its axial direction. There is one first support platform located on one side of the coil frame in the axial direction. The first end of the glass tube rests on the first support platform.

3. The reed relay with high sealing performance according to claim 2, characterized in that: The glass tube is arranged obliquely relative to the base, and the distance between the first end of the glass tube and the base is smaller than the distance between the second end of the glass tube and the base.

4. The reed relay with high sealing performance according to claim 2, characterized in that: The supporting surface of the first supporting platform in contact with the glass tube is inclined, and a higher end of the supporting surface is close to the coil frame, and a lower end of the supporting surface is away from the coil frame.

5. The reed relay with high sealing performance according to claim 2, 3 or 4, characterized in that: The base is also provided with a second support platform, and the tongue reed lead-out end located at the second end of the glass tube contacts the second support platform to provide support; the lowest point of the supporting surface of the second support platform for the tongue reed lead-out end is higher than the lowest point of the supporting surface of the first support platform for the glass tube.

6. The reed relay with high sealing performance according to claim 2, 3 or 4, characterized in that: The glass tube is provided with a chimney column extending radially thereof near its first end portion, the chimney column rests on the first supporting platform, and a limiting protrusion is provided on the first supporting platform on the side of the chimney column facing away from the coil frame, and the chimney column is limited between the limiting protrusion and the coil frame.

7. The reed relay with high sealing performance according to claim 6, characterized in that: The first support platform is L-shaped when viewed from above, including a first side and a second side, and the first side extends in a horizontal direction perpendicular to the axial direction of the coil frame and provides support for the first end of the glass tube, and the second side extends in the axial direction of the coil frame toward the side close to the coil frame and provides support for the chimney column, and the limiting protrusion is provided on the second side of the first support platform.

8. The reed relay with high sealing performance according to claim 15, characterized in that: The first supporting platform is provided with a first arc surface adapted to and in contact with the outer surface of the glass tube; the second supporting platform is provided with a second arc surface adapted to the outer surface of the cylindrical section of the tongue reed lead end supported by it.

9. The reed relay with high sealing performance according to claim 5, characterized in that: The second support platform is provided with a guide groove, which is through-shaped at both ends of the coil frame in the axial direction. When the reed switch is installed in the coil frame, the guide groove cooperates with the flattened part of the tail of the tongue reed lead end supported by the second support platform to provide guidance and clearance.

10. The reed relay with high sealing performance according to claim 1, characterized in that: The portion of the glass tube located in the coil frame is in clearance fit with the coil frame.

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