Static reed for vacuum relay, static reed assembly and vacuum relay

Abstract

The invention discloses a static reed for a vacuum relay, a static reed assembly and the vacuum relay, and belongs to the field of vacuum relays. The static reed for the vacuum relay comprises a movable through hole and a positioning groove arranged on at least one side of the movable through hole, the positioning groove is arranged on a first surface of the static reed, and the first surface is a surface intersected with the extension direction of the axis of the movable through hole; the groove bottom of the positioning groove inclines in the direction away from the first surface in the first direction so that the distance between the groove bottom of the positioning groove and the first surface can be gradually increased in sequence in the first direction, or the groove bottom of the positioning groove inclines in the direction close to the first surface in the first direction so that the distance between the positioning groove and the first surface can be gradually increased. The distance between the groove bottom of the positioning groove and the first surface is gradually decreased in the first direction, and the first direction is the direction in which the positioning groove points to the movable through hole. Therefore, the static feeler lever can be pre-positioned through the positioning groove, displacement caused by shaking of the static feeler lever before the static feeler lever is fixed in the positioning groove is avoided, and the assembly precision is improved.

Description

Technical Field

[0001] This application belongs to the field of vacuum relays, and particularly relates to a static reed, a static reed assembly and a vacuum relay for a vacuum relay. Background Art

[0002] In the electrical engineering industry, relays, as a kind of control device, are widely used. It has a control system (also known as the input circuit) and a controlled system (also known as the output circuit), and is usually applied to automatic control circuits. A relay is actually an "automatic switch" that uses a smaller current to control a larger current. Therefore, it plays roles such as automatic regulation, safety protection, and circuit conversion in the circuit.

[0003] In the related art, the static reed assembly in a vacuum relay includes a static contact rod, a static reed and a transmission rod, so as to realize the switching of the vacuum device in different states through the contact and disconnection of the transmission rod and the static contact rod. Among them, the static contact rod is fixed on the static reed.

[0004] However, before the static contact rod is welded to the static reed, the static contact rod is prone to rolling. Therefore, when the static contact rod is welded to the static reed, it is easy to shake and cause displacement, which is difficult to ensure the assembly accuracy of the static contact rod and the static reed, and reduces the assembly efficiency of the contact rod and the static reed. Summary of the Invention

[0006] The purpose of the embodiments of this application is to provide a static reed, a static reed assembly and a vacuum relay for a vacuum relay, at least solving the problems that when the static contact rod is welded to the static reed, it is easy to shake and cause displacement, which is difficult to ensure the assembly accuracy of the static contact rod and the static reed, and reduces the assembly efficiency of the contact rod and the static reed.

[0007] In a first aspect, the embodiments of this application provide a static reed for a vacuum relay, and the static reed for the vacuum relay includes:

[0008] A movable through hole and a positioning groove provided on at least one side of the movable through hole, the positioning groove is provided on the first surface of the static reed, and the first surface is a surface intersecting with the extending direction of the axis of the movable through hole;

[0009] The bottom of the positioning groove inclines away from the first surface in a first direction, so that the distance between the bottom of the positioning groove and the first surface increases sequentially in the first direction, or the bottom of the positioning groove inclines towards the first surface in the first direction, so that the distance between the bottom of the positioning groove and the first surface decreases sequentially in the first direction, where the first direction is the direction in which the positioning groove points to the movable through hole.

[0010] In the embodiment of the present application, since the static reed for a vacuum relay includes: a movable through hole and a positioning groove provided on at least one side of the movable through hole, the positioning groove is provided on the first surface of the static reed, the first surface is a surface intersecting with the extending direction of the axis of the movable through hole, the bottom of the positioning groove is inclined in the first direction away from the first surface, so that the distance between the bottom of the positioning groove and the first surface increases sequentially in the first direction, or the bottom of the positioning groove is inclined in the first direction towards the first surface, so that the distance between the bottom of the positioning groove and the first surface decreases sequentially in the first direction, the first direction is the direction in which the positioning groove points to the movable through hole, therefore, the bottom of the positioning groove is an inclined surface. When the static contact rod is assembled on the static part, it can roll to the installation position under the action of the inclined surface at the bottom of the positioning groove, and then be fixed to the bottom of the positioning groove. In this way, when assembling a static reed and a static contact rod provided by the embodiment of the present application, the static contact rod can be pre-positioned through the positioning groove, avoiding displacement due to the shaking of the static contact rod before it is fixed in the positioning groove, and thus ensuring the assembly accuracy between the static contact rod and the positioning groove. At the same time, it can make the static contact rod automatically roll to the installation position under the action of the inclined bottom of the positioning groove, facilitating the assembly and positioning between the static contact rod and the positioning groove, and improving the assembly efficiency between the static reed and the static contact rod.

[0011] Optionally, at least a part of the orthographic projection of the movable through hole on the first surface in the second direction coincides with the orthographic projection of the positioning groove on the first surface in the second direction, wherein the second direction is parallel to the axis of the movable through hole.

[0012] Optionally, the positioning groove has a notch structure on the side facing the axis of the movable through hole, and the overlapping area of the orthographic projection of the movable through hole on the first surface in the second direction and the orthographic projection of the positioning groove on the first surface in the second direction is the first area, and the first area is the area where the orthographic projection of the notch structure on the first surface in the second direction is located.

[0013] In a second aspect, the embodiment of the present application provides a static reed assembly for a vacuum relay, and the static reed assembly for a vacuum relay includes at least one static contact rod and at least one static reed as described in any embodiment of the first aspect;

[0014] The static contact rod is fixed in the positioning groove.

[0015] Optionally, the static reed assembly includes a first static contact rod, a second static contact rod and at least two of the static reeds arranged in the second direction;

[0016] At least one side of each of the static reed pieces where the moving through-hole is formed is provided with the positioning groove. The first static contact rod is arranged in the positioning groove formed in one of the two adjacent static reed pieces, and the second static contact rod is arranged in the positioning groove formed in the other of the two adjacent static reed pieces.

[0017] Optionally, the first surfaces included in two adjacent static reed pieces are arranged opposite to each other in the second direction, and the second direction is parallel to the axis of the moving through-hole;

[0018] On the first surface of each static reed piece, a first positioning groove and a second positioning groove are arranged at intervals in the first direction. The bottom of the first positioning groove inclines away from the first surface in the first direction, and the distance between the bottom of the first positioning groove and the first surface increases sequentially in the first direction. The bottom of the second positioning groove inclines away from the first surface in the first direction, and the distance between the bottom of the second positioning groove and the first surface increases sequentially in the first direction;

[0019] The first static contact rod is fixed in the first positioning groove included in one of the two adjacent static reed pieces, and the second static contact rod is fixed in the second positioning groove included in the other of the two adjacent static reed pieces.

[0020] Optionally, one side of the first positioning groove facing the second positioning groove has a first notch structure, and the first notch structure communicates with the moving through-hole. One side of the second positioning groove facing the first positioning groove has a second notch structure, and the second notch structure communicates with the moving through-hole. At least a part of the first static contact rod is located at the first notch structure, and at least a part of the second static contact rod is located at the second notch structure.

[0021] Optionally, the first positioning groove at least includes three first limiting inner walls facing different directions, and the first limiting inner walls enclose the first limiting cavity, and the first static contact rod is located in the first limiting cavity;

[0022] The second positioning groove at least includes three second limiting inner walls facing different directions, and the second limiting inner walls enclose the second limiting cavity, and the second static contact rod is located in the second limiting cavity.

[0023] Optionally, the maximum distance between the bottom of the first positioning groove and the first surface is a first distance, and the first distance is greater than or equal to one-half of the dimension of the first static contact rod in the second direction;

[0024] The maximum distance between the bottom of the second positioning groove and the first surface is a second distance, and the second distance is greater than or equal to half of the dimension of the second stationary contact rod in the second direction.

[0025] Optionally, the stationary contact rod is a cylindrical rod-shaped structure.

[0026] Optionally, the positive projection of the movable through hole on the first surface in the second direction at least partially coincides with the positive projection of the first stationary contact rod on the first surface in the second direction, and the positive projection of the movable through hole on the first surface in the second direction at least partially coincides with the positive projection of the second stationary contact rod on the first surface in the second direction.

[0027] In a third aspect, an embodiment of the present application provides a vacuum relay, which includes a transmission rod and a static reed assembly for a vacuum relay according to any embodiment of the second aspect;

[0028] The transmission rod is movably connected in the movable through hole to approach or separate from the stationary contact rod.

[0029] Optionally, the vacuum relay further includes a housing;

[0030] The housing includes a base and a casing, the base is fixed at the end of the casing in the second direction, and at least one auxiliary reed is further arranged inside the housing;

[0031] The auxiliary reed is located between the static reed and the base, and an installation through hole coaxially arranged with the movable through hole in the second direction is formed on the auxiliary reed, and the transmission rod passes through the installation through hole and is movably connected in the movable through hole, wherein the second direction is parallel to the axis of the movable through hole.

[0032] Optionally, the vacuum relay further includes an electromagnetic assembly and an armature reed assembly;

[0033] The electromagnetic assembly includes a magnetic conduction cylinder and an electromagnetic coil, the electromagnetic coil is arranged in the magnetic conduction cylinder, and the armature reed assembly is arranged on the top wall at one end of the magnetic conduction cylinder;

[0034] The armature reed assembly includes a connection bracket, and one end of the connection bracket away from the magnetic conduction cylinder is movably connected to the transmission rod.

[0035] Through the above installation method, the vacuum relay provided by the embodiment of the present application has at least the following beneficial effects:

[0036] 1. The size of the stationary contact rod after fixation can be ensured by the positioning groove arranged on the static reed. During the fixation process, it is not necessary to stack the dimensional tolerances of the stationary contact rod, and the assembly accuracy between the stationary contact rod and the positioning groove is ensured.

[0037] 2. The positioning groove is not easily deformed after forming, which can ensure the size of the static reed, and then ensure the size after welding the static contact rod and the positioning groove. Moreover, the size of the static reed after processing is convenient for measurement.

[0038] 3. It can make the static contact rod automatically roll to the installation position under the action of the inclined bottom of the positioning groove, which is convenient for the assembly and positioning between the static contact rod and the positioning groove, and improves the assembly efficiency of the vacuum relay. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present disclosure. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0040] Figure 1 It represents the structural schematic diagram of the first static reed for a vacuum relay provided by the embodiment of the present application;

[0041] Figure 2 It represents the cross-sectional view of the first static reed for a vacuum relay provided by the embodiment of the present application;

[0042] Figure 3 It represents the structural schematic diagram of the second static reed for a vacuum relay provided by the embodiment of the present application;

[0043] Figure 4 It represents the cross-sectional view of the second static reed for a vacuum relay provided by the embodiment of the present application;

[0044] Figure 5 It represents the structural schematic diagram of the third static reed for a vacuum relay provided by the embodiment of the present application;

[0045] Figure 6 It represents the cross-sectional view of the third static reed for a vacuum relay provided by the embodiment of the present application;

[0046] Figure 7 It represents the structural schematic diagram of the static reed assembly for a vacuum relay provided by the embodiment of the present application;

[0047] Figure 8 It represents the cross-sectional view of the static reed assembly for a vacuum relay provided by the embodiment of the present application;

[0048] Figure 9 It represents the cross-sectional view of a vacuum relay provided by the embodiment of the present application.

[0049] Reference Signs:

[0050] 1: Static reed assembly; 11: First static contact rod; 12: Second static contact rod; 13: Static reed; 131: First surface; 132: First positioning groove; 1321: First notch structure; 133: Second positioning groove; 1331: Second notch structure; 134: Moving through hole; 2: Transmission rod; 3: Housing; 31: Base; 32: Outer shell; 6: Auxiliary reed; 7: Electromagnetic assembly; 71: Magnetic conduction cylinder; 72: Electromagnetic coil; 8: Armature reed assembly; 81: Connection bracket; 82: Armature; X: First direction; Z: Second direction; Y: Third direction. Detailed implementation manners

[0051] The terms "first" and "second" in the description and claims of this application may explicitly or implicitly include one or more of such features. In the description of this application, unless otherwise specified, the meaning of "a plurality" is two or more. In addition, "and / or" in the description and claims means at least one of the connected objects. The character " / " generally means an "or" relationship between the associated objects before and after.

[0052] In the description of this application, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing this application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to this application.

[0053] In the description of this application, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific situations.

[0054] In the first aspect, as Figures 1 to 6 shown, an embodiment of this application provides a static reed for a vacuum relay, which is characterized in that the static reed for a vacuum relay includes:

[0055] The movable through-hole 134 and the positioning grooves provided on at least one side of the movable through-hole 134, the positioning grooves are provided on the first surface 131 of the static reed 13, and the first surface 131 is a surface intersecting with the extending direction of the axis of the movable through-hole 134;

[0056] The bottom of the positioning groove is inclined in the first direction away from the first surface 131, so that the distance between the bottom of the positioning groove and the first surface 131 increases sequentially in the first direction, or the bottom of the positioning groove is inclined in the first direction towards the first surface 131, so that the distance between the bottom of the positioning groove and the first surface 131 decreases sequentially in the first direction, wherein the first direction is the direction in which the positioning groove points to the movable through-hole 134.

[0057] As can be seen from the above embodiments, in the embodiments of the present application, since the static reed for a vacuum relay includes: a movable through-hole 134 and positioning grooves provided on at least one side of the movable through-hole 134, the positioning grooves are provided on the first surface 131 of the static reed 13, the first surface 131 is a surface intersecting with the extending direction of the axis of the movable through-hole 134, the bottom of the positioning groove is inclined in the first direction away from the first surface 131, so that the distance between the bottom of the positioning groove and the first surface 131 increases sequentially in the first direction, or the bottom of the positioning groove is inclined in the first direction towards the first surface 131, so that the distance between the bottom of the positioning groove and the first surface 131 decreases sequentially in the first direction, and the first direction is the direction in which the positioning groove points to the movable through-hole 134, therefore, the bottom of the positioning groove is a slope. When the static contact rod is assembled on the static reed 13, it can roll to the installation position under the action of the slope of the bottom of the positioning groove and then be fixed to the bottom of the positioning groove. In this way, when assembling a static reed and a static contact rod provided by the embodiments of the present application, the static contact rod can be pre-positioned through the positioning groove, avoiding displacement of the static contact rod due to shaking before it is fixed in the positioning groove, thereby ensuring the assembly accuracy between the static contact rod and the positioning groove. At the same time, it can make the static contact rod automatically roll to the installation position under the action of the inclined bottom of the positioning groove, facilitating the assembly and positioning between the static contact rod and the positioning groove, and improving the assembly efficiency between the static reed 13 and the static contact rod.

[0058] It should be noted that, in the above embodiments, the number of positioning grooves included in the static reed 13 can be one or two, that is, as Figure 3 and Figure 4 shown, a positioning groove can be opened on one side of the static reed 13 where the movable through-hole 134 is provided, as Figure 1 , Figure 2 , Figure 5 and Figure 6As shown, positioning grooves can also be provided on both sides of the movable through-hole 134 provided in the static reed 13. The embodiments of the present application do not limit this. The above-mentioned movable through-hole 134 is a through-hole for installing the drive rod 2 of the vacuum relay. The static reed 13 can be a plate-like structure, a housing structure, or a cover-like structure. The embodiments of the present application do not limit this either.

[0059] It should also be noted that, as Figure 1 and Figure 2 shown, the inclination direction of the bottom of the positioning groove can be inclined in the first direction away from the first surface 131, as Figure 5 and Figure 6 shown, or it can also be inclined in the first direction towards the first surface 131. The embodiments of the present application do not limit this. When the fixed reed includes two positioning grooves, the inclination directions of the bottoms of the two positioning grooves can be the same or different. Specifically, taking the static reed 13 including the first positioning groove 132 and the second positioning groove 133 as an example, the first positioning groove 132 and the second positioning groove 133 are respectively provided on both sides of the movable through-hole 134. In one embodiment, the bottom of the first positioning groove 132 is inclined in the first direction away from the first surface 131, and the bottom of the second positioning groove 133 is inclined in the first direction away from the first surface 131. Or, the bottom of the first positioning groove 132 is inclined in the first direction towards the first surface 131, and the bottom of the second positioning groove 133 is inclined in the first direction towards the first surface 131, which can make the included angle between the inclined plane formed by the bottom of the first positioning groove 132 and the inclined plane formed by the bottom of the second positioning groove 133 be an acute angle or an obtuse angle. Or, the bottom of the first positioning groove 132 is inclined in the first direction away from the first surface 131, and the bottom of the second positioning groove 133 is inclined in the first direction towards the first surface 131. Or, the bottom of the first positioning groove 132 is inclined in the first direction towards the first surface 131, and the bottom of the second positioning groove 133 is inclined in the first direction away from the first surface 131, making the inclined plane formed by the bottom of the first positioning groove 132 and the inclined plane formed by the bottom of the second positioning groove 133 parallel to each other. The inclination direction of the bottom of the positioning groove is determined according to the matching method with the drive rod 2 and the driving method of the vacuum relay. The embodiments of the present application do not limit this. It should be noted that the first direction is the direction in which the positioning groove points to the movable through-hole 134, that is, Figure 1 and Figure 3 the direction shown by X in, and it can also be understood as the direction from the central position of the positioning groove to the axis of the movable through-hole 134.

[0060] In addition, in some embodiments, the positive projection of the movable through-hole 134 on the first surface 131 in the second direction at least partially coincides with the positive projection of the positioning groove on the first surface 131 in the second direction, wherein the second direction is parallel to the axis of the movable through-hole 134.

[0061] In this embodiment, since the positive projection of the movable through-hole 134 on the first surface 131 in the second direction at least partially coincides with the positive projection of the positioning groove on the first surface 131 in the second direction, and the second direction is parallel to the axis of the movable through-hole 134, after the static contact rod is installed in the positioning groove, it is convenient to contact the transmission rod 2 installed in the movable through-hole 134, ensuring the adaptability of the static reed 13. It should be noted that the second direction is the direction shown by Z in Figure 1 and intersects with the first direction.

[0062] In some embodiments, the positioning groove has a notch structure on the side facing the axis of the movable through-hole 134. The overlapping area of the positive projection of the movable through-hole 134 on the first surface 131 in the second direction and the positive projection of the positioning groove on the first surface 131 in the second direction is the first area, and the first area is the area where the positive projection of the notch structure on the first surface 131 in the second direction is located.

[0063] In this embodiment, the notch structure is a part of the positioning groove and also the part where the overlapping area of the positioning groove and the movable through-hole 134 is located. Thus, since the overlapping area of the positive projection of the movable through-hole 134 on the first surface 131 in the second direction and the positive projection of the positioning groove on the first surface 131 in the second direction is the first area, and the first area is the area where the positive projection of the notch structure on the first surface 131 in the second direction is located, the movable through-hole 134 can be connected through the notch structure. After the static contact rod is installed in the positioning groove, it can be ensured that the static contact rod can contact the transmission rod 2 installed in the movable through-hole 134 through the notch structure.

[0064] In a second aspect, as Figures 7 to 8 shown, an embodiment of the present application provides a static reed assembly for a vacuum relay, and the static reed assembly for the vacuum relay includes:

[0065] At least one static contact rod and at least one static reed 13 as described in any embodiment of the first aspect, and the static contact rod is fixed in the positioning groove.

[0066] In this embodiment, since the static reed assembly 1 for the vacuum relay includes at least one static contact rod and at least one static reed 13 as described in any embodiment of the first aspect, and the static contact rod is fixed in the positioning groove, when the static contact rod is fixed in the positioning groove, the static contact rod can be pre-positioned through the positioning groove, avoiding displacement due to the shaking of the static contact rod before it is fixed in the positioning groove, thereby ensuring the assembly accuracy between the static contact rod and the positioning groove. At the same time, the static contact rod can automatically roll to the installation position under the action of the inclined bottom of the positioning groove, facilitating the assembly and positioning between the static contact rod and the positioning groove, and the assembly efficiency between the static reed 13 and the static contact rod.

[0067] It should be noted that when the static contact rod is assembled with the static reed 13, the static contact rod rolls to the stop point of the static reed 13 through the inclined bottom of the positioning groove. During brazing, it can avoid the deviation caused by the floating of the static contact rod (the floating deviation means that if a traditional arc-shaped groove or a horizontal groove is used, after the solder paste is heated and melted into water, the static contact rod will float in the liquid solder, so that the static contact rod will float left or right upwards, forming a left-right deviation from the original standard welding position. If the static contact rod moves inwards, the contact gap will be small and the withstand voltage capacity will be reduced. If the static contact rod moves outwards, the movement stroke will be increased and a larger magnetic suction force is required). Therefore, by using the positioning groove in the above embodiment, it can ensure that the static contact rod slides towards the preset welding point, ensure the accuracy of the brazing size, and further ensure the contact gap. In addition, the size of the static contact rod after welding can be ensured by the size of the static reed 13, and the size after welding has good consistency. At the same time, the size of the static reed 13 is convenient to measure after processing, and the inclined bottom of the positioning groove is used to ensure the free sliding of the static contact rod to ensure the contact positioning of the static contact rod, without using traditional tooling for auxiliary positioning, and one-side welding can be completed.

[0068] Among them, the static contact rod in the above embodiment can be a rod-shaped structure with an elliptical cross-section, or a prismatic rod-shaped structure, such as a quadrangular prism, a hexagonal prism, etc., or a cylindrical rod-shaped structure. The embodiments of the present application do not limit this. In addition, the static reed assembly 1 can include one static reed 13, or can include multiple static reeds 13. The static reed assembly 1 can include one static contact rod, or can include multiple static contact rods. The embodiments of the present application do not limit this either.

[0069] In addition, in some embodiments, the static reed assembly 1 includes a first static contact rod 11, a second static contact rod 12, and at least two static reeds 13 arranged along the second direction; at least one side of each static reed 13 where the movable through hole 134 is opened is provided with a positioning groove. The first static contact rod 11 is arranged in the positioning groove opened in one of the two adjacent static reeds 13, and the second static contact rod 12 is arranged in the positioning groove opened in the other of the two adjacent static reeds 13.

[0070] In this embodiment, the first static contact rod 11 is disposed in a positioning groove formed in one of two adjacent static reed pieces 13, and the second static contact rod 12 is disposed in a positioning groove formed in the other of the two adjacent static reed pieces 13. The first static contact rod 11 and the second static contact rod 12 can be positioned respectively through the two positioning grooves formed in the two adjacent static reed pieces 13, so as to facilitate the assembly and positioning between the first static contact rod 11 and the first positioning groove 132, and facilitate the assembly between the second static contact rod 12 and the second positioning groove 133.

[0071] It should be noted that, in this embodiment, the positioning groove included in the static reed piece 13 may be one or two. That is, the positioning groove may be formed on one side of the static reed piece 13 where the movable through hole 134 is provided, or may be formed on both sides of the static reed piece 13 where the movable through hole 134 is provided. The embodiment of the present application does not make any limitation thereto. Exemplarily, taking the case where the positioning groove is formed on one side of the static reed piece 13 where the movable through hole 134 is provided as an example, a first positioning groove 132 may be formed on one side of the static reed piece 13 where the movable through hole 134 is provided among two adjacent static reed pieces 13, and a second positioning groove 133 may be formed on one side of the static reed piece 13 where the movable through hole 134 is provided among the other two adjacent static reed pieces 13. The first positioning groove 132 and the second positioning groove 133 are respectively located on both sides of the axis of the movable through hole 134. The first static contact rod 11 is fixed in the first positioning groove 132, and the second static contact rod 12 is fixed in the second positioning groove 133.

[0072] In addition, in some embodiments, the first surfaces 131 included in two adjacent static reed pieces 13 are oppositely disposed in the second direction, and the second direction is parallel to the axis of the movable through hole 134; a first positioning groove 132 and a second positioning groove 133 are disposed on the first surface 131 of each static reed piece 13 at intervals in the first direction. The bottom of the first positioning groove 132 is inclined in the first direction away from the first surface 131, and the distance between the bottom of the first positioning groove 132 and the first surface 131 increases successively in the first direction. The bottom of the second positioning groove 133 is inclined in the first direction away from the first surface 131, and the distance between the bottom of the second positioning groove 133 and the first surface 131 increases successively in the first direction. The first static contact rod 11 is fixed in the first positioning groove 132 included in one of the two adjacent static reed pieces 13, and the second static contact rod 12 is fixed in the second positioning groove 133 included in the other of the two adjacent static reed pieces 13.

[0073] In this embodiment, since the first positioning groove 132 and the second positioning groove 133 are arranged at intervals along the first direction on the first surface 131 of each static reed 13, the bottom of the first positioning groove 132 is inclined away from the first surface 131 along the first direction, and the distance between the bottom of the first positioning groove 132 and the first surface 131 increases sequentially along the first direction. The bottom of the second positioning groove 133 is inclined away from the first surface 131 along the first direction, and the distance between the bottom of the second positioning groove 133 and the first surface 131 increases sequentially along the first direction. Therefore, the bottoms of the first positioning groove 132 and the second positioning groove 133 are both inclined surfaces, and the distance between the bottom and the notch on the side where the first positioning groove 132 and the second positioning groove 133 are close to each other is greater than the distance between the bottom and the notch on the side where the first positioning groove 132 and the second positioning groove 133 are away from each other. In other words, the dimension of the side of the first positioning groove 132 close to the second positioning groove 133 in the second direction is greater than the dimension of the side of the first positioning groove 132 away from the second positioning groove 133 in the second direction, and the dimension of the side of the second positioning groove 133 close to the first positioning groove 132 in the second direction is greater than the dimension of the side of the second positioning groove 133 away from the first positioning groove 132 in the second direction.

[0074] Moreover, since the first static contact rod 11 is fixed in the first positioning groove 132 included in one of the two adjacent static spring pieces 13, and the second static contact rod 12 is fixed in the second positioning groove 133 included in the other of the two adjacent static spring pieces 13, when the first static contact rod 11 is fixed in the first positioning groove 132, the first static contact rod 11 can roll along the inclined surface formed by the bottom of the first positioning groove 132 to the side close to the second positioning groove 133 and then be fixed to the bottom of the first positioning groove 132. When the second static contact rod 12 is fixed in the second positioning groove 133, the second static contact rod 12 can roll along the inclined surface formed by the bottom of the second positioning groove 133 to the side close to the first positioning groove 132 and then be fixed to the bottom of the second positioning groove 133. In this way, when assembling the static spring assembly 1 provided in the embodiment of the present application, the first static contact rod 11 can be pre-positioned through the first positioning groove 132, and the second static contact rod 12 can be pre-positioned through the second positioning groove 133, avoiding the displacement of the first static contact rod 11 due to the shaking of the first static contact rod 11 before it is fixed in the first positioning groove 132, and at the same time avoiding the displacement of the second static contact rod 12 due to the shaking of the second static contact rod 12 before it is fixed in the second positioning groove 133, thereby ensuring the assembly accuracy between the first static contact rod 11 and the first positioning groove 132, and ensuring the assembly accuracy between the second static contact rod 12 and the second positioning groove 133. At the same time, the first static contact rod 11 can automatically roll to the side of the first positioning groove 132 close to the second positioning groove 133 under the action of the inclined bottom of the first positioning groove 132, and the second static contact rod 12 can automatically roll to the side of the second positioning groove 133 close to the first positioning groove 132 under the action of the inclined bottom of the second positioning groove 133, facilitating the assembly and positioning between the first static contact rod 11 and the first positioning groove 132, facilitating the assembly and positioning between the second static contact rod 12 and the second positioning groove 133, and improving the assembly efficiency of the static spring assembly 1.

[0075] It should be noted that since the first positioning groove 132 and the second positioning groove 133 are arranged at intervals along the first direction on the first surface 131 of each static spring piece 13, the first static contact rod 11 and the second static contact rod 12 can be ensured not to shake and fall after installation through the first positioning groove 132 and the second positioning groove 133.

[0076] It should also be noted that the first positioning groove 132 and the second positioning groove 133 can extend along the third direction, where the third direction is the direction that intersects both the second direction and the first direction, and the third direction is consistent with the extending direction of the first static contact rod 11. The distance between the first positioning groove 132 and the second positioning groove 133 in the first direction is determined according to the dimension of the transmission rod 2 in the first direction and the movement distance of the transmission rod 2. It should be noted that the first direction intersects the extending direction of the first static contact rod 11, such as Figure 1The first direction is the direction shown by X in [reference], the second direction is the extending direction of the axis of the movable through hole 134, as shown by Figure 1 Z in [reference], the third direction is the same as the extending direction of the first static contact rod 11, as shown by Figure 1 Y in [reference]. The structure of the first positioning groove 132 is the same as or similar to that of the second positioning groove 133. To reduce the processing difficulty of the static spring piece 13, the structures of the first positioning groove 132 and the second positioning groove 133 can be made the same. In the embodiment of the present application, after the first static contact rod 11 is fixed in the first positioning groove 132 and the second static contact rod 12 is fixed in the second positioning groove 133, the first static contact rod 11 and the second static contact rod 12 need to move towards each other. Therefore, the included angle between the inclined plane formed by the bottom of the first positioning groove 132 and the inclined plane formed by the bottom of the second positioning groove 133 needs to be an obtuse angle, that is, the distance between the bottom and the opening of the side where the first positioning groove 132 and the second positioning groove 133 are close to each other is greater than the distance between the bottom and the opening of the side where the first positioning groove 132 and the second positioning groove 133 are far from each other.

[0077] In addition, in some embodiments, one side of the first positioning groove 132 facing the second positioning groove 133 has a first notch structure 1321, the first notch structure 1321 communicates with the movable through hole 134, one side of the second positioning groove 133 facing the first positioning groove 132 has a second notch structure 1331, the second notch structure 1331 communicates with the movable through hole 134, at least a part of the first static contact rod 11 is located at the first notch structure 1321, and at least a part of the second static contact rod 12 is located at the second notch structure 1331.

[0078] In this embodiment, since one side of the first positioning groove facing the second positioning groove 133 has a first notch structure 1321, the first notch structure 1321 communicates with the movable through hole 134, one side of the second positioning groove 133 facing the first positioning groove 132 has a second notch structure 1331, the second notch structure 1331 communicates with the movable through hole 134, at least a part of the first static contact rod 11 is located at the first notch structure 1321, and at least a part of the second static contact rod 12 is located at the second notch structure 1331, the transmission rod 2 installed in the movable through hole 134 can be ensured to contact the first static contact rod 11 through the first notch structure 1321, and the transmission rod 2 installed in the movable through hole 134 can be ensured to contact the second static contact rod 12 through the second notch structure 1331.

[0079] In addition, in some embodiments, the first positioning groove 132 includes at least three first limiting inner walls facing different directions. The first limiting inner walls enclose a first limiting cavity. The first static contact rod 11 is located in the first limiting cavity. The second positioning groove 133 includes at least three second limiting inner walls facing different directions. The second limiting inner walls enclose a second limiting cavity. The second static contact rod 12 is located in the second limiting cavity.

[0080] In this embodiment, since the first positioning groove 132 includes at least three first limiting inner walls facing different directions, the first limiting inner walls enclose a first limiting cavity, and the first static contact rod 11 is located in the first limiting cavity, not only is there no open slot edge in the extending direction of the first static contact rod 11 on the first positioning groove 132 (the first positioning groove 132 is a closed structure in the extending direction of the first static contact rod 11), which can avoid deformation at the edge position of the first positioning groove 132 in the extending direction of the first static contact rod 11, and further avoid the problem that the size of the first positioning groove 132 is not easy to determine in the extending direction of the first static contact rod 11, but also the first limiting cavity can ensure that the first static contact rod 11 can only roll in the direction close to the second static contact rod 12. Similarly, since the second positioning groove 133 includes at least three second limiting inner walls facing different directions, the second limiting inner walls enclose a second limiting cavity, and the second static contact rod 12 is located in the second limiting cavity, not only is there no open slot edge in the extending direction of the second static contact rod 12 on the second positioning groove 133 (the second positioning groove 133 is a closed structure in the extending direction of the second static contact rod 12), which can avoid deformation at the edge position of the second positioning groove 133 in the extending direction of the second static contact rod 12, and further avoid the problem that the size of the second positioning groove 133 is not easy to determine in the extending direction of the second static contact rod 12, but also the second limiting cavity can ensure that the second static contact rod 12 can only roll in the direction close to the first static contact rod 113.

[0081] In addition, in some embodiments, the maximum distance between the bottom of the first positioning groove 132 and the first surface 131 is a first distance. The first distance is greater than or equal to half of the size of the first static contact rod 11 in the second direction. The maximum distance between the bottom of the second positioning groove 133 and the first surface 131 is a second distance. The second distance is greater than or equal to half of the size of the second static contact rod 12 in the second direction.

[0082] In this embodiment, since the maximum distance between the bottom of the first positioning groove 132 and the first surface 131 is the first distance, and the first distance is greater than or equal to half of the dimension of the first static contact rod 11 in the second direction, the first static contact rod 11 can be in tangential contact with the first limiting inner wall of the first positioning groove 132, making the placement dimension of the first static contact rod 11 relatively stable. Also, since the maximum distance between the bottom of the second positioning groove 133 and the first surface 131 is the second distance, and the second distance is greater than or equal to half of the dimension of the second static contact rod 12 in the second direction, the second static contact rod 12 can be in tangential contact with the second limiting inner wall of the second positioning groove 133, making the placement dimension of the second static contact rod 12 relatively stable.

[0083] In addition, in some embodiments, the static contact rod is a cylindrical rod structure.

[0084] In this embodiment, since the static contact rod is a cylindrical rod structure, after the static contact rod is placed in the positioning groove, the static contact rod can automatically roll to the inclined side under the action of the inclined bottom of the positioning groove, and then be limited by the positioning groove, further preventing the static contact rod from shaking or shifting.

[0085] In addition, in some embodiments, the positive projection of the movable through hole 134 on the first surface 131 along the second direction at least partially coincides with the positive projection of the first static contact rod 11 on the first surface 131 along the second direction, and the positive projection of the movable through hole 134 on the first surface 131 along the second direction at least partially coincides with the positive projection of the second static contact rod 12 on the first surface 131 along the second direction.

[0086] In this embodiment, since the positive projection of the movable through hole 134 on the first surface 131 along the second direction at least partially coincides with the positive projection of the first static contact rod 11 on the first surface 131 along the second direction, and the positive projection of the movable through hole 134 on the first surface 131 along the second direction at least partially coincides with the positive projection of the second static contact rod 12 on the first surface 131 along the second direction, it can be ensured that the first static contact rod 11 can contact the transmission rod 2 installed in the movable through hole 134, and it can be ensured that the second static contact rod 12 can contact the transmission rod 2 installed in the movable through hole 134.

[0087] In addition, in some embodiments, a first counterweight is connected to the middle of the first static contact rod 11, and a second counterweight is connected to the middle of the second static contact rod 12.

[0088] In this embodiment, since a first counterweight is connected to the middle of the first static contact rod 11 and a second counterweight is connected to the middle of the second static contact rod 12, the gravity of the first counterweight can be used to keep the first static contact rod 11 always in contact with the bottom of the first positioning groove 132, and the gravity of the second counterweight can be used to keep the second static contact rod 12 always in contact with the bottom of the first positioning groove 132, thereby ensuring that the relative positions of the first static contact rod 11 and the second static contact rod 12 remain consistent. It should be noted that the first counterweight can be arranged on the outer surface of the first static contact rod 11 or inside the first static contact rod 11, and the second counterweight can be arranged on the outer surface of the second static contact rod 12 or inside the second static contact rod 12. The embodiments of the present application do not limit this. When the first counterweight is arranged inside the first static contact rod 11 and the second counterweight is arranged inside the second static contact rod 12, the first static contact rod 11 can be a hollow rod-shaped structure, the first counterweight is embedded in the middle of the inner cavity of the first static contact rod 11, the second static contact rod 12 can be a hollow rod-shaped structure, and the second counterweight is embedded in the middle of the inner cavity of the second static contact rod 12.

[0089] In a third aspect, as Figure 9 shown, the embodiments of the present application further provide a vacuum relay, which includes the static reed assembly 1 for a vacuum relay described in any one of the embodiments of the second aspect above. The transmission rod 2 is movably connected in the movable through hole 134 to approach or move away from the static contact rod.

[0090] In this embodiment, since the movable through hole 134 is provided in the static reed 13, sufficient space can be provided for the movement of the transmission rod 2 through the movable through hole 134. Exemplarily, taking two static contact rods as an example, the first static contact rod 11 can correspond to the normally closed contact, and the second static contact rod 12 can correspond to the normally open contact. When the transmission rod 2 contacts the first static contact rod 11, the normally closed contact is closed, and a vacuum relay is in a first state, thereby making a vacuum relay in a normally closed state. When the transmission rod 2 contacts the second static contact rod 12, the normally open contact is closed, and the vacuum relay is in a second state, thereby making the vacuum relay in a normally open state. In this way, when the vacuum relay includes the static reed assembly 1 for a vacuum relay described in any one of the embodiments of the second aspect above, the static contact rod can be pre-positioned through the positioning groove, avoiding displacement due to the shaking of the static contact rod before it is fixed in the positioning groove, thereby ensuring the assembly accuracy between the static contact rod and the positioning groove. At the same time, the static contact rod can be automatically rolled to the installation position under the action of the inclined bottom of the positioning groove, facilitating the assembly and positioning between the static contact rod and the positioning groove, and the assembly efficiency between the static reed 13 and the static contact rod.

[0091] In addition, the vacuum relay further includes a housing 3; the housing 3 includes a base 31 and a housing 32, the base 31 is fixed to an end of the housing 32 in a second direction, and at least one auxiliary reed 6 is disposed inside the housing 3; the auxiliary reed 6 is located between the static reed 13 and the base 31, and an installation through hole coaxially disposed with the movable through hole 134 in the second direction is formed in the auxiliary reed 6, and the transmission rod 2 passes through the installation through hole and is movably connected in the movable through hole 134, wherein the second direction is parallel to the axis of the movable through hole 134.

[0092] In this embodiment, since the housing 3 includes a base 31 and a housing 32, the base 31 is fixed to an end of the housing 32 in a second direction, and at least one auxiliary reed 6 is disposed inside the housing 3, the auxiliary reed 6 is located between the static reed 13 and the base 31, and an installation through hole coaxially disposed with the movable through hole 134 in the second direction is formed in the auxiliary reed 6, and the transmission rod 2 passes through the installation through hole and is movably connected in the movable through hole 134, the distance between the static reed 13 and the base 31 in the second direction can be increased through the auxiliary reed 6, the size of the transmission rod 2 in the second direction can be maximized, and further the movement range of the transmission rod 2 can be increased, so as to avoid accidental contact with the static contact rod due to the small movement range of the transmission rod 2, thereby ensuring the transmission accuracy of the vacuum relay. It should be noted that the structure of the auxiliary reed 6 can be the same as that of the static reed 13, which is convenient for processing and manufacturing the vacuum relay and reduces the preparation cost of the vacuum relay.

[0093] It should be noted that in the embodiment of the present application, the housing 3 can be a cylindrical housing 3, a square housing 3, or a housing 3 of other shapes. The specific shape and type of the housing 3 are determined according to the shape of the static reed 13 and the installation space required by the static reed 13, and the embodiment of the present application does not limit this. The number of static reeds 13 disposed inside the housing 3 is at least two, that is, at least two static reeds 13 are arranged at intervals in the second direction, and the two static reeds 13 arranged at intervals need to be arranged back to back so that the first surfaces 131 included in the adjacent two static reeds 13 are opposite to each other in the second direction.

[0094] In addition, in some embodiments, the vacuum relay further includes an electromagnetic component 7 and an armature reed component 8. The electromagnetic component 7 includes a magnetic conduction cylinder 71 and an electromagnetic coil 72. The electromagnetic coil 72 is disposed in the magnetic conduction cylinder 71. The armature reed component 8 is disposed on the top wall at one end of the magnetic conduction cylinder 71. The armature reed component 8 includes a connection bracket 81, and one end of the connection bracket 81 away from the magnetic conduction cylinder 71 is movably connected to the transmission rod 2.

[0095] In this embodiment, the movement of the connecting bracket 81 can be driven through the transmission between the electromagnetic assembly 7 and the armature reed assembly 8, so as to drive the movement of the movable rod, so that the vacuum relay can be switched between different states. Exemplarily, the first static contact rod 11 can correspond to the normally closed contact, and the second static contact rod 12 can correspond to the normally open contact. In this way, when the transmission rod 2 contacts the first static contact rod 11, the normally closed contact is closed, and thus the vacuum relay is in the normally closed state. When the transmission rod 2 contacts the second static contact rod 12, the normally open contact is closed, and thus a vacuum relay is in the normally open state. Specifically, when the electromagnetic coil 72 is energized, the electromagnetic coil 72 generates magnetism, so that the armature 82 moves, and the surface of the armature 82 facing the magnetic guide cylinder 71 abuts against the top wall at one end of the magnetic guide cylinder 71. During the movement of the armature 82, the connecting bracket 81 drives the transmission rod 2 to move to the second static contact rod 12 and contact it, so that the vacuum relay is normally open. When the electromagnetic coil 72 is de-energized, under the action of the connecting bracket 81, the armature 82 is reset. During the reset process, the connecting bracket 81 drives the transmission rod 2 to move to the first static contact rod 113 and contact it, so that the vacuum relay is normally closed.

[0096] In the description of this specification, the descriptions with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0097] Although the embodiments of the present application have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and purposes of the present application, and the scope of the present application is defined by the claims and their equivalents.

Claims

1. A static reed for a vacuum relay, characterized in that, The static reed for the vacuum relay includes: a moving through-hole and a positioning groove provided on at least one side of the moving through-hole, the positioning groove being provided on a first surface of the static reed, and the first surface being a surface intersecting with the extending direction of the axis of the moving through-hole; the bottom of the positioning groove is inclined in a first direction away from the first surface, so that the distance between the bottom of the positioning groove and the first surface increases sequentially in the first direction, or the bottom of the positioning groove is inclined in the first direction towards the first surface, so that the distance between the bottom of the positioning groove and the first surface decreases sequentially in the first direction, wherein the first direction is the direction in which the positioning groove points to the moving through-hole.

2. The static reed for a vacuum relay according to claim 1, wherein At least a part of the orthographic projection of the moving through-hole on the first surface in a second direction coincides with the orthographic projection of the positioning groove on the first surface in the second direction, wherein the second direction is parallel to the axis of the moving through-hole.

3. The static reed for a vacuum relay according to claim 2, characterized in that, The positioning groove has a notch structure on the side facing the axis of the moving through-hole. The overlapping area of the orthographic projection of the moving through-hole on the first surface in the second direction and the orthographic projection of the positioning groove on the first surface in the second direction is a first area, and the first area is the area where the orthographic projection of the notch structure on the first surface in the second direction is located.

4. A static contact assembly for a vacuum relay, characterized in that, The static reed assembly for the vacuum relay includes at least one static contact rod and at least one static reed as described in any one of claims 1 to 3; The static contact rod is fixed in the positioning groove.

5. The static reed assembly for a vacuum relay according to claim 4, characterized in that, The static reed assembly includes a first static contact rod, a second static contact rod, and at least two of the static reeds arranged in a second direction; The positioning groove is provided on at least one side of each static reed where the moving through-hole is opened. The first static contact rod is arranged in the positioning groove opened in one of the two adjacent static reeds, and the second static contact rod is arranged in the positioning groove opened in the other of the two adjacent static reeds.

6. The static reed assembly for a vacuum relay according to claim 5, characterized in that, The first surfaces included in two adjacent static reeds are arranged opposite to each other in the second direction, and the second direction is parallel to the axis of the moving through-hole; A first positioning groove and a second positioning groove are arranged at intervals in the first direction on the first surface of each static reed. The bottom of the first positioning groove is inclined in the first direction away from the first surface, and the distance between the bottom of the first positioning groove and the first surface increases sequentially in the first direction. The bottom of the second positioning groove is inclined in the first direction away from the first surface, and the distance between the bottom of the second positioning groove and the first surface increases sequentially in the first direction; The first static contact rod is fixed in the first positioning groove included in one of the two adjacent static reeds, and the second static contact rod is fixed in the second positioning groove included in the other of the two adjacent static reeds.

7. The static reed assembly for a vacuum relay according to claim 6, characterized in that, One side of the first positioning groove facing the second positioning groove has a first notch structure, and the first notch structure communicates with the movable through hole. One side of the second positioning groove facing the first positioning groove has a second notch structure, and the second notch structure communicates with the movable through hole. At least a part of the first static contact rod is located at the first notch structure, and at least a part of the second static contact rod is located at the second notch structure.

8. The static contact assembly for a vacuum relay according to claim 6, characterized in that, The first positioning groove at least includes three first limiting inner walls facing different directions, and the first limiting inner walls enclose the first limiting cavity, and the first static contact rod is located in the first limiting cavity; The second positioning groove at least includes three second limiting inner walls facing different directions, and the second limiting inner walls enclose the second limiting cavity, and the second static contact rod is located in the second limiting cavity.

9. The static reed assembly for a vacuum relay according to claim 6, wherein, The maximum distance between the bottom of the first positioning groove and the first surface is a first distance, and the first distance is greater than or equal to one-half of the dimension of the first static contact rod in the second direction; The maximum distance between the bottom of the second positioning groove and the first surface is a second distance, and the second distance is greater than or equal to one-half of the dimension of the second static contact rod in the second direction.

10. The static contact assembly for a vacuum relay according to claim 4, characterized in that, The static contact rod is a cylindrical rod-shaped structure.

11. The static reed component for a vacuum relay according to claim 5, characterized in that, The orthographic projection of the movable through hole on the first surface along the second direction at least partially coincides with the orthographic projection of the first static contact rod on the first surface along the second direction, and the orthographic projection of the movable through hole on the first surface along the second direction at least partially coincides with the orthographic projection of the second static contact rod on the first surface along the second direction.

12. A vacuum relay, characterized in that, The vacuum relay includes a transmission rod and the static reed assembly for a vacuum relay according to any one of claims 4 to 11; The transmission rod is movably connected in the movable through hole to approach or depart from the static contact rod.

13. The vacuum relay according to claim 12, wherein The vacuum relay further includes a housing; The housing includes a base and a casing, the base is fixed to an end of the casing in the second direction, and at least one auxiliary reed is further arranged inside the housing; The auxiliary reed is located between the static reed and the base, and an installation through hole coaxially arranged with the movable through hole along the second direction is formed in the auxiliary reed, and the transmission rod passes through the installation through hole and is movably connected in the movable through hole, wherein the second direction is parallel to the axis of the movable through hole.

14. The vacuum relay according to claim 12, wherein The vacuum relay further includes an electromagnetic assembly and an armature reed assembly; The electromagnetic assembly includes a magnetic conduction cylinder and an electromagnetic coil, the electromagnetic coil is arranged in the magnetic conduction cylinder, and the armature reed assembly is arranged on the top wall at one end of the magnetic conduction cylinder; The armature reed assembly includes a connection bracket, and one end of the connection bracket far from the magnetic conduction cylinder is movably connected to the transmission rod.

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