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

Abstract

The utility model 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, specifically relating to a stationary spring, a stationary spring assembly, and a vacuum relay. Background Technology

[0002] In the electrical engineering industry, relays are widely used as control devices. They have a control system (also known as an input circuit) and a controlled system (also known as an output circuit), and are typically used in automatic control circuits. A relay is essentially an "automatic switch" that uses a smaller current to control a larger current. Therefore, it plays a role in automatic adjustment, safety protection, and circuit switching in circuits.

[0003] In related technologies, the stationary spring assembly in a vacuum relay includes a stationary contact rod, a stationary spring plate, and a transmission rod, so as to achieve the switching of the vacuum device in different states through the contact and disconnection of the transmission rod and the stationary contact rod. The stationary contact rod is fixed to the stationary spring plate.

[0004] However, because the stationary contact rod is prone to rolling before being welded to the stationary spring, it is easy for it to wobble and shift when it is welded to the stationary spring. This makes it difficult to ensure the assembly accuracy of the stationary contact rod and the stationary spring, and reduces the assembly efficiency of the contact rod and the stationary spring. Utility Model Content

[0005] The purpose of this application is to provide a stationary spring, a stationary spring assembly, and a vacuum relay, which at least solves the problem that when the stationary contact rod is welded to the stationary spring, it is easy for it to wobble and shift, making it difficult to ensure the assembly accuracy of the stationary contact rod and the stationary spring, and reducing the assembly efficiency of the contact rod and the stationary spring.

[0006] In a first aspect, embodiments of this application provide a stationary spring for a vacuum relay, the stationary spring for the vacuum relay comprising:

[0007] The movable through hole and a positioning groove disposed on at least one side of the movable through hole, the positioning groove being disposed on a first surface of the stationary spring sheet, the first surface being a surface intersecting the extending direction of the axis of the movable through hole;

[0008] The bottom of the positioning groove is inclined in a direction away from the first surface along a first direction, so that the distance between the bottom of the positioning groove and the first surface increases sequentially along the first direction; or, the bottom of the positioning groove is inclined in a direction closer to the first surface along a first direction, so that the distance between the bottom of the positioning groove and the first surface decreases sequentially along the first direction, wherein the first direction is the direction in which the positioning groove points to the movable through hole.

[0009] In this embodiment, the stationary spring for the vacuum relay includes a movable through hole and a positioning groove disposed on at least one side of the movable through hole. The positioning groove is disposed on a first surface of the stationary spring, the first surface being a surface intersecting the extension direction of the axis of the movable through hole. The bottom of the positioning groove is inclined away from the first surface along a first direction, so that the distance between the bottom of the positioning groove and the first surface increases sequentially along the first direction. Alternatively, the bottom of the positioning groove is inclined towards the first surface along the first direction, so that the distance between the bottom of the positioning groove and the first surface decreases sequentially along 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 stationary contact rod is assembled on the stationary spring, it can roll to the installation position under the action of the inclined surface of the bottom of the positioning groove and then be fixed with the bottom of the positioning groove. Thus, when assembling the stationary spring and stationary contact rod of the vacuum relay provided in this application embodiment, the stationary contact rod can be pre-positioned by the positioning groove, preventing displacement due to wobbling of the stationary contact rod before it is fixed in the positioning groove, thereby ensuring the assembly accuracy between the stationary contact rod and the positioning groove. Simultaneously, the stationary 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 stationary contact rod and the positioning groove, and improving the assembly efficiency between the stationary spring and the stationary contact rod.

[0010] Optionally, the orthographic projection of the movable through hole along the second direction onto the first surface at least partially coincides with the orthographic projection of the positioning groove along the second direction onto the first surface, wherein the second direction is parallel to the axis of the movable through hole.

[0011] Optionally, the positioning groove has a notch structure on the side facing the axis of the movable through hole. The overlapping area of ​​the orthographic projection of the movable through hole along the second direction on the first surface and the orthographic projection of the positioning groove along the second direction on the first surface is the first area. The first area is the area where the orthographic projection of the notch structure along the second direction on the first surface is located.

[0012] In a second aspect, embodiments of this application provide a stationary spring assembly for a vacuum relay, the stationary spring assembly for a vacuum relay including at least one stationary contact rod and at least one stationary spring sheet as described in any embodiment of the first aspect;

[0013] The stationary contact rod is fixed in the positioning groove.

[0014] Optionally, the stationary spring assembly includes a first stationary contact rod, a second stationary contact rod, and at least two stationary spring plates arranged along a second direction;

[0015] At least one side of each of the stationary springs that has the movable through hole is provided with the positioning groove, the first stationary contact rod is provided in the positioning groove of one of the two adjacent stationary springs, and the second stationary contact rod is provided in the positioning groove of the other of the two adjacent stationary springs.

[0016] Optionally, the first surfaces of two adjacent stationary springs are disposed opposite each other in the second direction, which is parallel to the axis of the movable through hole;

[0017] Each of the stationary spring sheets has a first positioning groove and a second positioning groove spaced apart along the first direction on its first surface. The bottom of the first positioning groove is inclined away from the first surface along the first direction, and the distance between the bottom of the first positioning groove and the first surface increases sequentially along the first direction. The bottom of the second positioning groove is inclined away from the first surface along the first direction, and the distance between the bottom of the second positioning groove and the first surface increases sequentially along the first direction.

[0018] The first stationary contact rod is fixed in a first positioning groove of one of the two adjacent stationary springs, and the second stationary contact rod is fixed in a second positioning groove of the other of the two adjacent stationary springs.

[0019] Optionally, the first positioning groove has a first notch structure on the side facing the second positioning groove, the first notch structure being connected to the movable through hole, the second positioning groove has a second notch structure on the side facing the first positioning groove, the second notch structure being connected to the movable through hole, the first stationary contact rod being at least partially located at the first notch structure, and the second stationary contact rod being at least partially located at the second notch structure.

[0020] Optionally, the first positioning groove includes at least three first limiting inner walls facing different directions, the first limiting inner walls forming the first limiting cavity, and the first stationary contact rod being located in the first limiting cavity;

[0021] The second positioning groove includes at least three second limiting inner walls facing different directions, the second limiting inner walls forming the second limiting cavity, and the second stationary contact rod is located in the second limiting cavity.

[0022] 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 half of the dimension of the first stationary contact rod in the second direction;

[0023] The maximum distance between the bottom of the second positioning groove and the first surface is the second distance, which is greater than or equal to half the size of the second stationary contact rod in the second direction.

[0024] Optionally, the stationary contact rod is a cylindrical rod-shaped structure.

[0025] Optionally, the orthographic projection of the movable through hole along the second direction on the first surface at least partially coincides with the orthographic projection of the first stationary contact rod along the second direction on the first surface, and the orthographic projection of the movable through hole along the second direction on the first surface at least partially coincides with the orthographic projection of the second stationary contact rod along the second direction on the first surface.

[0026] Thirdly, embodiments of this application provide a vacuum relay, the vacuum relay including a transmission rod and the stationary spring assembly for a vacuum relay as described in any of the embodiments of the second aspect;

[0027] The transmission rod is movably connected in the movable through hole to move closer to or further away from the stationary contact rod.

[0028] Optionally, the vacuum relay further includes a housing;

[0029] The housing includes a base and an outer shell, the base being fixed to the end of the outer shell in a second direction, and the interior of the housing also having at least one auxiliary spring.

[0030] The auxiliary spring is located between the stationary spring and the base. The auxiliary spring has a mounting through hole that is coaxial with the movable through hole along the second direction. The transmission rod passes through the mounting through hole and is movably connected in the movable through hole. The second direction is parallel to the axis of the movable through hole.

[0031] Optionally, the vacuum relay further includes an electromagnetic assembly and an armature reed assembly;

[0032] The electromagnetic component includes a magnetic cylinder and an electromagnetic coil, the electromagnetic coil being disposed in the magnetic cylinder, and the armature spring assembly being disposed on the top wall of one end of the magnetic cylinder;

[0033] The armature spring assembly includes a connecting bracket, the end of which, away from the magnetic cylinder, is movably connected to the transmission rod.

[0034] Through the above installation method, the vacuum relay provided in this application embodiment has at least the following beneficial effects:

[0035] 1. The locating groove on the stationary spring can ensure the size of the stationary contact rod after it is fixed. There is no need to add the dimensional tolerance of the stationary contact rod during the fixing process, thus ensuring the assembly accuracy between the stationary contact rod and the locating groove.

[0036] 2. The positioning groove is not easily deformed after molding, which can ensure the size of the stationary spring, and thus ensure the size of the stationary contact rod and the positioning groove after welding. In addition, the size of the stationary spring after processing is easy to measure.

[0037] 3. It allows the stationary contact rod to automatically roll to the installation position under the action of the inclined bottom of the positioning groove, which facilitates the assembly and positioning between the stationary contact rod and the positioning groove, and improves the assembly efficiency of the vacuum relay. Attached Figure Description

[0038] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0039] Figure 1 This is a schematic diagram showing the structure of the first type of stationary spring for a vacuum relay provided in this application embodiment;

[0040] Figure 2 This is a cross-sectional view of the stationary spring for a first type of vacuum relay provided in an embodiment of this application;

[0041] Figure 3 This is a schematic diagram showing the structure of the stationary spring for a second type of vacuum relay provided in this application embodiment;

[0042] Figure 4 This is a cross-sectional view of the stationary spring for a second type of vacuum relay provided in an embodiment of this application;

[0043] Figure 5 This is a schematic diagram showing the structure of the third type of stationary spring for a vacuum relay provided in this application embodiment;

[0044] Figure 6 This is a cross-sectional view of the stationary spring for a third type of vacuum relay provided in the embodiments of this application;

[0045] Figure 7 This is a schematic diagram showing the structure of the stationary spring assembly for the vacuum relay provided in an embodiment of this application;

[0046] Figure 8 This is a cross-sectional view of the stationary spring assembly for a vacuum relay provided in an embodiment of this application;

[0047] Figure 9 This is a cross-sectional view of a vacuum relay provided in an embodiment of this application.

[0048] Figure label:

[0049] 1: Static spring assembly; 11: First static contact rod; 12: Second static contact rod; 13: Static spring sheet; 131: First surface; 132: First positioning groove; 1321: First notch structure; 133: Second positioning groove; 1331: Second notch structure; 134: Movable through hole; 2: Transmission rod; 3: Housing; 31: Base; 32: Outer shell; 6: Auxiliary spring sheet; 7: Electromagnetic assembly; 71: Magnetic guide cylinder; 72: Electromagnetic coil; 8: Armature spring sheet assembly; 81: Connecting bracket; 82: Armature; X: First direction; Z: Second direction; Y: Third direction. Detailed Implementation

[0050] The terms "first" and "second" in the specification and claims of this application may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise stated, "multiple" means two or more. Furthermore, "and / or" in the specification and claims indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0051] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0052] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0053] Firstly, such as Figures 1 to 6 As shown in the figure, this application provides a stationary spring for a vacuum relay, characterized in that the stationary spring for the vacuum relay includes:

[0054] The movable through hole 134 and the positioning groove provided on at least one side of the movable through hole 134, the positioning groove being provided on the first surface 131 of the stationary spring sheet 13, the first surface 131 being a surface intersecting the extension direction of the axis of the movable through hole 134;

[0055] The bottom of the positioning groove is inclined in a direction away from the first surface 131 along the first direction, so that the distance between the bottom of the positioning groove and the first surface 131 increases sequentially along the first direction. Alternatively, the bottom of the positioning groove is inclined in a direction closer to the first surface 131 along the first direction, so that the distance between the bottom of the positioning groove and the first surface 131 decreases sequentially along the first direction. The first direction is the direction in which the positioning groove points to the movable through hole 134.

[0056] As can be seen from the above embodiments, in this embodiment, the stationary spring for the vacuum relay includes a movable through hole 134 and a positioning groove disposed on at least one side of the movable through hole 134. The positioning groove is disposed on the first surface 131 of the stationary spring 13. The first surface 131 is a surface that intersects the extension direction of the axis of the movable through hole 134. The bottom of the positioning groove is inclined in a direction away from the first surface 131 along a first direction, so that the distance between the bottom of the positioning groove and the first surface 131 increases sequentially along the first direction. Alternatively, the bottom of the positioning groove is inclined in a direction closer to the first surface 131 along the first direction, so that the distance between the bottom of the positioning groove and the first surface 131 decreases sequentially along the first direction. 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 an inclined surface. When the stationary contact rod is assembled on the stationary spring 13, it can roll to the installation position under the action of the inclined surface of the bottom of the positioning groove and then be fixed with the bottom of the positioning groove. Thus, when assembling the stationary spring and stationary contact rod of the vacuum relay provided in this application embodiment, the stationary contact rod can be pre-positioned by the positioning groove, preventing displacement due to wobbling of the stationary contact rod before it is fixed in the positioning groove, thereby ensuring the assembly accuracy between the stationary contact rod and the positioning groove. Simultaneously, the stationary 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 stationary contact rod and the positioning groove, and improving the assembly efficiency between the stationary spring 13 and the stationary contact rod.

[0057] It should be noted that in the above embodiments, the positioning groove included in the stationary spring 13 can be one or two, that is, as shown in the figure. Figure 3 and Figure 4 As shown, a positioning groove can be opened on one side of the stationary spring 13 where the movable through hole 134 is located, such as... Figure 1 , Figure 2 , Figure 5 and Figure 6As shown, positioning grooves can also be formed on both sides of the movable through hole 134 in the stationary spring 13, but this embodiment does not limit this. The movable through hole 134 is a through hole for mounting the transmission rod 2 of the vacuum relay. The stationary spring 13 can be a plate structure, a housing structure, or a cover structure, and this embodiment does not limit this either.

[0058] It should also be noted that, such as Figure 1 and Figure 2 As shown, the inclination direction of the bottom of the positioning groove can be along the first direction towards the direction away from the first surface 131, such as... Figure 5 and Figure 6 As shown, the inclination can also be along the first direction towards the first surface 131, and this embodiment does not limit this. When the stationary spring includes two positioning grooves, the inclination directions of the bottom of the two positioning grooves can be the same or different. Specifically, taking the stationary spring 13 including a first positioning groove 132 and a second positioning groove 133 as an example, the first positioning groove 132 and the second positioning groove 133 are respectively opened on both sides of the movable through hole 134. In one embodiment, the bottom of the first positioning groove 132 is inclined along the first direction away from the first surface 131, and the bottom of the second positioning groove 133 is inclined along the first direction away from the first surface 131. Alternatively, the bottom of the first positioning groove 132 is inclined along the first direction towards the first surface 131, and the bottom of the second positioning groove 133 is inclined along the first direction towards the first surface 131, so that the included angle between the inclined surface formed by the bottom of the first positioning groove 132 and the inclined surface formed by the bottom of the second positioning groove 133 is an acute angle or an obtuse angle. Alternatively, the bottom of the first positioning groove 132 is inclined in a direction away from the first surface 131 along the first direction, and the bottom of the second positioning groove 133 is inclined in a direction closer to the first surface 131 along the first direction; or, the bottom of the first positioning groove 132 is inclined in a direction closer to the first surface 131 along the first direction, and the bottom of the second positioning groove 133 is inclined in a direction away from the first surface 131 along the first direction, such that the inclined surface formed by the bottom of the first positioning groove 132 and the inclined surface formed by the bottom of the second positioning groove 133 are parallel. The inclination direction of the bottom of the positioning groove is determined according to the cooperation method with the transmission rod 2 and the transmission method of the vacuum relay, and this embodiment does not limit it. It should be noted that the first direction is the direction from the positioning groove to the movable through hole 134, that is... Figure 1 and Figure 3 The direction indicated by X in the figure can also be understood as the direction in which the center of the positioning groove points to the axis of the movable through hole 134.

[0059] In addition, in some embodiments, the orthographic projection of the movable through hole 134 along the second direction on the first surface 131 at least partially coincides with the orthographic projection of the positioning groove along the second direction on the first surface 131, wherein the second direction is parallel to the axis of the movable through hole 134.

[0060] In this embodiment, since the orthographic projection of the movable through hole 134 along the second direction on the first surface 131 at least partially coincides with the orthographic projection of the positioning groove along the second direction on the first surface 131, and the second direction is parallel to the axis of the movable through hole 134, the stationary contact rod can be installed in the positioning groove, facilitating contact with the transmission rod 2 installed in the movable through hole 134, thus ensuring the adaptability of the stationary spring 13. It should be noted that the second direction, as... Figure 1 The direction indicated by Z in the diagram is where the second direction intersects with the first direction.

[0061] 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 orthographic projection of the movable through hole 134 along the second direction on the first surface 131 and the orthographic projection of the positioning groove along the second direction on the first surface 131 is the first area. The first area is the area where the orthographic projection of the notch structure along the second direction on the first surface 131 is located.

[0062] In this embodiment, the notch structure is part of the positioning groove and also the part where the positioning groove and the movable through hole 134 overlap. Thus, since the overlapping area of ​​the orthographic projection of the movable through hole 134 along the second direction on the first surface 131 and the orthographic projection of the positioning groove along the second direction on the first surface 131 is the first area, and the first area is the area where the orthographic projection of the notch structure along the second direction on the first surface 131 is located, the movable through hole 134 can be connected through the notch structure. After the stationary contact rod is installed in the positioning groove, it can be ensured that the stationary contact rod can contact the transmission rod 2 installed in the movable through hole 134 through the notch structure.

[0063] Secondly, such as Figures 7 to 8 As shown, this application provides a stationary spring assembly for a vacuum relay, which includes:

[0064] At least one stationary contact rod and at least one stationary spring 13 as described in any embodiment of the first aspect, the stationary contact rod being fixed in the positioning groove.

[0065] In this embodiment, since the vacuum relay's stationary spring assembly 1 includes at least one stationary contact rod and at least one stationary spring sheet 13 as described in any embodiment of the first aspect, and the stationary contact rod is fixed in the positioning groove, the stationary contact rod can be pre-positioned by the positioning groove when it is fixed in the positioning groove. This prevents the stationary contact rod from shifting due to shaking before it is fixed in the positioning groove, thereby ensuring the assembly accuracy between the stationary contact rod and the positioning groove. Simultaneously, the stationary 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 stationary contact rod and the positioning groove, and improving the assembly efficiency between the stationary spring sheet 13 and the stationary contact rod.

[0066] It should be noted that during the assembly of the stationary contact rod and the stationary spring 13, the stationary contact rod rolls to the stop point of the stationary spring 13 via the inclined bottom of the positioning groove. This prevents the stationary contact rod from floating during brazing, thus avoiding deviations caused by the floating of the stationary contact rod (floating deviation refers to the following: if a traditional arc-shaped groove or horizontal groove is used, the stationary contact rod will float in the liquid solder after the solder paste melts upon heating, causing it to float either to the left or right, resulting in a left-right deviation from the original standard welding position. If the stationary contact rod moves inward, the contact gap will be small, reducing the pressure resistance; if the stationary contact rod moves outward, the stroke will increase, requiring a greater magnetic force). Therefore, the positioning groove in the above embodiment ensures that the stationary contact rod slides towards the preset welding point, ensuring accurate brazing dimensions and further guaranteeing the contact gap. Furthermore, the dimensions of the stationary spring 13 can be used to ensure the post-weld dimensions of the stationary contact rod, resulting in good dimensional consistency. Meanwhile, the 13-inch size of the stationary spring is easy to measure after machining, and the inclined bottom of the positioning groove ensures the free sliding of the stationary contact rod, thus ensuring the contact positioning of the stationary contact rod. There is no need to use traditional tooling to assist in positioning; welding on one side can be completed.

[0067] In the above embodiments, the stationary contact rod can be a rod-shaped structure with an elliptical cross-section, or a prism-shaped rod-shaped structure, such as a square prism, a hexagonal prism, or a cylindrical rod-shaped structure. This application embodiment does not limit this. In addition, the stationary spring assembly 1 may include one stationary spring 13 or multiple stationary springs 13. The stationary spring assembly 1 may include one stationary contact rod or multiple stationary contact rods. This application embodiment does not limit this.

[0068] In some embodiments, the stationary spring assembly 1 includes a first stationary contact rod 11, a second stationary contact rod 12, and at least two stationary spring plates 13 arranged along a second direction; each stationary spring plate 13 has a positioning groove on at least one side of the movable through hole 134, the first stationary contact rod 11 is disposed in the positioning groove of one of the two adjacent stationary spring plates 13, and the second stationary contact rod 12 is disposed in the positioning groove of the other of the two adjacent stationary spring plates 13.

[0069] In this embodiment, the first stationary contact rod 11 is disposed in a positioning groove in one of the two adjacent stationary spring plates 13, and the second stationary contact rod 12 is disposed in a positioning groove in the other of the two adjacent stationary spring plates 13. The first stationary contact rod 11 and the second stationary contact rod 12 can be positioned by the two positioning grooves in the two adjacent stationary spring plates 13 respectively, thereby facilitating the assembly and positioning between the first stationary contact rod 11 and the first positioning groove 132, and facilitating the assembly between the second stationary contact rod 12 and the second positioning groove 133.

[0070] It should be noted that in this embodiment, the stationary spring 13 may include one or two positioning grooves. That is, a positioning groove may be provided on one side of the stationary spring 13 where the movable through hole 134 is provided, or positioning grooves may be provided on both sides of the stationary spring 13 where the movable through hole 134 is provided. This application embodiment does not limit this. For example, taking the provision of a positioning groove on one side of the stationary spring 13 where the movable through hole 134 is provided as an example, a first positioning groove 132 may be provided on one side of the movable through hole 134 of one of the two adjacent stationary springs 13, and a second positioning groove 133 may be provided on one side of the movable through hole 134 of the other of the two adjacent stationary springs 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 stationary contact rod 11 is fixed in the first positioning groove 132, and the second stationary contact rod 12 is fixed in the second positioning groove 133.

[0071] In some embodiments, the first surfaces 131 of two adjacent stationary springs 13 are arranged opposite each other in a second direction, and the second direction is parallel to the axis of the movable through hole 134; each stationary spring 13 has a first positioning groove 132 and a second positioning groove 133 spaced apart in a first direction. The bottom of the first positioning groove 132 is inclined away from the first surface 131 in the first direction, and the distance between the bottom of the first positioning groove 132 and the first surface 131 increases sequentially in the first direction. The bottom of the second positioning groove 133 is inclined away from the first surface 131 in the first direction, and the distance between the bottom of the second positioning groove 133 and the first surface 131 increases sequentially in the first direction. The first stationary contact rod 11 is fixed in the first positioning groove 132 of one of the two adjacent stationary springs 13, and the second stationary contact rod 12 is fixed in the second positioning groove 133 of the other of the two adjacent stationary springs 13.

[0072] In this embodiment, since each stationary spring 13 has a first positioning groove 132 and a second positioning groove 133 spaced apart along a first direction on its first surface 131, 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. Similarly, 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 bottom of the first positioning groove 132 and the groove of the second positioning groove 133 are... The bottoms are all sloped, and the distance between the bottom and opening of the first positioning groove 132 and the second positioning groove 133 on the side that are close to each other is greater than the distance between the bottom and opening of the first positioning groove 132 and the second positioning groove 133 on the side that are far from each other. In other words, the dimension of the side of the first positioning groove 132 that is 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 that is far from the second positioning groove 133 in the second direction, and the dimension of the side of the second positioning groove 133 that is 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 that is far from the first positioning groove 132 in the second direction.

[0073] Since the first stationary contact rod 11 is fixed in the first positioning groove 132 of one of the two adjacent stationary springs 13, and the second stationary contact rod 12 is fixed in the second positioning groove 133 of the other stationary spring 13, when the first stationary contact rod 11 is fixed in the first positioning groove 132, the first stationary 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 stationary contact rod 12 is fixed in the second positioning groove 133, the second stationary 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. Thus, during assembly, the stationary spring assembly 1 provided in this application embodiment can pre-position the first stationary contact rod 11 through the first positioning groove 132 and pre-position the second stationary contact rod 12 through the second positioning groove 133. This prevents the first stationary contact rod 11 from shifting due to shaking before it is fixed in the first positioning groove 132, and also prevents the second stationary contact rod 12 from shifting due to shaking before it is fixed in the second positioning groove 133. This ensures the assembly accuracy between the first stationary contact rod 11 and the first positioning groove 132, and the assembly accuracy between the second stationary contact rod 12 and the second positioning groove 133. Simultaneously, the first stationary contact rod 11 can automatically roll to the side of the first positioning groove 132 near the second positioning groove 133 under the action of the inclined bottom of the first positioning groove 132, and the second stationary contact rod 12 can automatically roll to the side of the second positioning groove 133 near the first positioning groove 132 under the action of the inclined bottom of the second positioning groove 133, which facilitates the assembly and positioning between the first stationary contact rod 11 and the first positioning groove 132, and between the second stationary contact rod 12 and the second positioning groove 133, thereby improving the assembly efficiency of the stationary spring assembly 1.

[0074] It should be noted that, since each stationary spring 13 has a first positioning groove 132 and a second positioning groove 133 spaced apart along the first direction on its first surface 131, the first positioning groove 132 and the second positioning groove 133 can ensure that the first stationary contact rod 11 and the second stationary contact rod 12 will not shake or fall off after installation.

[0075] It should also be noted that the first positioning groove 132 and the second positioning groove 133 can extend along a third direction, which is the direction that intersects both the second and first directions simultaneously, and this third direction is consistent with the extension direction of the first stationary contact rod 11. The distance between the first positioning groove 132 and the second positioning groove 133 in the first direction is determined based on 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 with the extension direction of the first stationary contact rod 11, such as... Figure 1The X direction is shown in the diagram, and the second direction is the extension direction of the axis of the movable through hole 134, as shown in the diagram. Figure 1 The direction indicated by Z in the figure is consistent with the extension direction of the first stationary contact rod 11, as shown in the figure. Figure 1 The direction is indicated by Y in the diagram. The structure of the first positioning groove 132 and the structure of the second positioning groove 133 are the same or similar. To reduce the processing difficulty of the stationary spring 13, the structures of the first positioning groove 132 and the second positioning groove 133 can be made consistent. In this embodiment, after the first stationary contact rod 11 is fixed in the first positioning groove 132 and the second stationary contact rod 12 is fixed in the second positioning groove 133, the first stationary contact rod 11 and the second stationary contact rod 12 need to move towards each other. Therefore, the angle between the inclined surface formed by the bottom of the first positioning groove 132 and the inclined surface 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 groove on the side of the first positioning groove 132 and the second positioning groove 133 that are close to each other needs to be greater than the distance between the bottom and the opening of the groove on the side of the first positioning groove 132 and the second positioning groove 133 that are far away from each other needs to be greater.

[0076] In addition, in some embodiments, the first positioning groove 132 has a first notch structure 1321 on the side facing the second positioning groove 133, the first notch structure 1321 is connected to the movable through hole 134, the second positioning groove 133 has a second notch structure 1331 on the side facing the first positioning groove 132, the second notch structure 1331 is connected to the movable through hole 134, the first stationary contact rod 11 is at least partially located at the first notch structure 1321, and the second stationary contact rod 12 is at least partially located at the second notch structure 1331.

[0077] In this embodiment, since the side of the positioning groove facing the second positioning groove 133 has a first notch structure 1321, and the first notch structure 1321 is connected to the movable through hole 134, and the side of the second positioning groove 133 facing the first positioning groove 132 has a second notch structure 1331, and the second notch structure 1331 is connected to the movable through hole 134, the first stationary contact rod 11 is at least partially located at the first notch structure 1321, and the second stationary contact rod 12 is at least partially located at the second notch structure 1331, the first notch structure 1321 can ensure that the transmission rod 2 installed in the movable through hole 134 is in contact with the first stationary contact rod 11, and the second notch structure 1331 can ensure that the transmission rod 2 installed in the movable through hole 134 is in contact with the second stationary contact rod 12.

[0078] 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 forming a first limiting cavity, the first stationary contact rod 11 being located in the first limiting cavity, and the second positioning groove 133 includes at least three second limiting inner walls facing different directions, the second limiting inner walls forming a second limiting cavity, the second stationary contact rod 12 being located in the second limiting cavity.

[0079] In this embodiment, since the first positioning groove 132 includes at least three first limiting inner walls facing different directions, and the first limiting inner walls form a first limiting cavity, and the first stationary contact rod 11 is located in the first limiting cavity, the first positioning groove 132 not only has no open groove edge in the extension direction of the first stationary contact rod 11 (the first positioning groove 132 is a closed structure in the extension direction of the first stationary contact rod 11), it can avoid deformation at the edge position of the first positioning groove 132 in the extension direction of the first stationary contact rod 11, thereby avoiding the problem that the size of the first positioning groove 132 in the extension direction of the first stationary contact rod 11 is difficult to determine, but also the first limiting cavity can ensure that the first stationary contact rod 11 can only roll in the direction closer to the second stationary contact rod 12. Similarly, since the second positioning groove 133 includes at least three second limiting inner walls facing different directions, and the second limiting inner walls form a second limiting cavity, and the second stationary contact rod 12 is located in the second limiting cavity, the second positioning groove 133 not only has no open groove edge in the extension direction of the second stationary contact rod 12 (the second positioning groove 133 is a closed structure in the extension direction of the second stationary contact rod 12), it can avoid deformation at the edge position of the second positioning groove 133 in the extension direction of the second stationary contact rod 12, thereby avoiding the problem that the size of the second positioning groove 133 in the extension direction of the second stationary contact rod 12 is difficult to determine, but also the second limiting cavity can ensure that the second stationary contact rod 12 can only roll in the direction closer to the first stationary contact rod 113.

[0080] In some embodiments, the maximum distance between the bottom of the first positioning groove 132 and the first surface 131 is a first distance, which is greater than or equal to half the dimension of the first stationary 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, which is greater than or equal to half the dimension of the second stationary contact rod 12 in the second direction.

[0081] In this embodiment, since the maximum distance between the bottom of the first positioning groove 132 and the first surface 131 is a first distance, which is greater than or equal to half the dimension of the first stationary contact rod 11 in the second direction, the tangential point of the first stationary contact rod 11 can contact the first limiting inner wall of the first positioning groove 132, making the placement dimension of the first stationary contact rod 11 relatively stable. Similarly, since the maximum distance between the bottom of the second positioning groove 133 and the first surface 131 is a second distance, which is greater than or equal to half the dimension of the second stationary contact rod 12 in the second direction, the tangential point of the second stationary contact rod 12 can contact the second limiting inner wall of the second positioning groove 133, making the placement dimension of the second stationary contact rod 12 relatively stable.

[0082] In addition, in some embodiments, the stationary contact rod is a cylindrical rod-shaped structure.

[0083] In this embodiment, since the stationary contact rod is a cylindrical rod-shaped structure, after the stationary contact rod is placed in the positioning groove, it 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, thereby further preventing the stationary contact rod from shaking or shifting.

[0084] In some embodiments, the orthographic projection of the movable through hole 134 along the second direction on the first surface 131 is at least partially coincident with the orthographic projection of the first stationary contact rod 11 along the second direction on the first surface 131, and the orthographic projection of the movable through hole 134 along the second direction on the first surface 131 is at least partially coincident with the orthographic projection of the second stationary contact rod 12 along the second direction on the first surface 131.

[0085] In this embodiment, since the orthographic projection of the movable through hole 134 along the second direction on the first surface 131 at least partially coincides with the orthographic projection of the first stationary contact rod 11 along the second direction on the first surface 131, and the orthographic projection of the movable through hole 134 along the second direction on the first surface 131 at least partially coincides with the orthographic projection of the second stationary contact rod 12 along the second direction on the first surface 131, it can be ensured that the first stationary contact rod 11 can contact the transmission rod 2 installed in the movable through hole 134, and it can be ensured that the second stationary contact rod 12 can contact the transmission rod 2 installed in the movable through hole 134.

[0086] In some embodiments, a first counterweight is connected to the middle of the first stationary contact rod 11, and a second counterweight is connected to the middle of the second stationary contact rod 12.

[0087] In this embodiment, since a first counterweight is connected to the middle of the first stationary contact rod 11 and a second counterweight is connected to the middle of the second stationary contact rod 12, the first stationary contact rod 11 is always in contact with the bottom of the first positioning groove 132 due to the gravity of the first counterweight, and the second stationary contact rod 12 is always in contact with the bottom of the first positioning groove 132 due to the gravity of the second counterweight, thereby ensuring that the relative positions of the first stationary contact rod 11 and the second stationary contact rod 12 remain consistent. It should be noted that the first counterweight can be disposed on the outer surface of the first stationary contact rod 11 or inside the first stationary contact rod 11, and the second counterweight can be disposed on the outer surface of the second stationary contact rod 12 or inside the second stationary contact rod 12; this embodiment does not limit this. When the first counterweight is located inside the first stationary contact rod 11 and the second counterweight is located inside the second stationary contact rod 12, the first stationary contact rod 11 can be a hollow rod-shaped structure, with the first counterweight embedded in the middle of the inner cavity of the first stationary contact rod 11, and the second stationary contact rod 12 can be a hollow rod-shaped structure, with the second counterweight embedded in the middle of the inner cavity of the second stationary contact rod 12.

[0088] Thirdly, such as Figure 9 As shown, this application embodiment also provides a vacuum relay, which includes the vacuum relay stationary spring assembly 1 described in any of the embodiments of the second aspect above, and the transmission rod 2 is movably connected in the movable through hole 134 to be close to or away from the stationary contact rod.

[0089] In this embodiment, since the stationary spring 13 has a movable through hole 134, sufficient space is provided for the movement of the transmission rod 2 through the movable through hole 134. For example, taking two stationary contact rods, the first stationary contact rod 11 can correspond to a normally closed contact, and the second stationary contact rod 12 can correspond to a normally open contact. When the transmission rod 2 contacts the first stationary contact rod 11, the normally closed contact closes, causing the vacuum relay to be in a first state, and thus causing the vacuum relay to be in a normally closed state. When the transmission rod 2 contacts the second stationary contact rod 12, the normally open contact closes, causing the vacuum relay to be in a second state, and thus causing the vacuum relay to be in a normally open state. Thus, when the vacuum relay includes the stationary spring assembly 1 for the vacuum relay as described in any of the embodiments of the second aspect above, the stationary contact rod can be pre-positioned by the positioning groove, preventing displacement due to the shaking of the stationary contact rod before it is fixed in the positioning groove, thereby ensuring the assembly accuracy between the stationary contact rod and the positioning groove. At the same time, the stationary contact rod can automatically roll to the installation position under the action of the inclined bottom of the positioning groove, which facilitates the assembly and positioning between the stationary contact rod and the positioning groove, and improves the assembly efficiency between the stationary spring 13 and the stationary contact rod.

[0090] In addition, the vacuum relay also includes a housing 3; the housing 3 includes a base 31 and an outer shell 32, the base 31 is fixed to the end of the outer shell 32 in the second direction, and at least one auxiliary spring 6 is provided inside the housing 3; the auxiliary spring 6 is located between the stationary spring 13 and the base 31, and the auxiliary spring 6 has a mounting through hole that is coaxial with the movable through hole 134 in the second direction, and the transmission rod 2 passes through the mounting 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.

[0091] In this embodiment, the housing 3 includes a base 31 and an outer shell 32. The base 31 is fixed to the end of the outer shell 32 in the second direction. At least one auxiliary spring 6 is also provided inside the housing 3. The auxiliary spring 6 is located between the stationary spring 13 and the base 31. The auxiliary spring 6 has a mounting through hole coaxially arranged with the movable through hole 134 in the second direction. The transmission rod 2 passes through the mounting through hole and is movably connected in the movable through hole 134. Therefore, the distance between the stationary spring 13 and the base 31 in the second direction can be increased by the auxiliary spring 6, maximizing the size of the transmission rod 2 in the second direction and increasing the range of motion of the transmission rod 2. This avoids accidental contact with the stationary contact rod due to a small range of motion of the transmission rod 2, thus ensuring the transmission accuracy of the vacuum relay. It should be noted that the structure of the auxiliary spring 6 can be consistent with the structure of the stationary spring 13, which facilitates the processing and manufacturing of the vacuum relay and reduces the manufacturing cost of the vacuum relay.

[0092] It should be noted that, in this embodiment, the housing 3 can be cylindrical, square, or of other shapes. The specific shape and type of the housing 3 are determined based on the shape of the stationary spring 13 and the installation space required for the stationary spring 13, and this embodiment does not limit this. The number of stationary springs 13 disposed inside the housing 3 is at least two, that is, at least two stationary springs 13 are spaced apart along the second direction, and the two spaced stationary springs 13 need to be disposed opposite to each other so that the first surfaces 131 of the two adjacent stationary springs 13 are disposed opposite each other in the second direction.

[0093] In addition, in some embodiments, the vacuum relay also includes an electromagnetic component 7 and an armature spring assembly 8. The electromagnetic component 7 includes a magnetic cylinder 71 and an electromagnetic coil 72. The electromagnetic coil 72 is disposed in the magnetic cylinder 71. The armature spring assembly 8 is disposed on the top wall of one end of the magnetic cylinder 71. The armature spring assembly 8 includes a connecting bracket 81. The end of the connecting bracket 81 away from the magnetic cylinder 71 is movably connected to the transmission rod 2.

[0094] In this embodiment, the transmission between the electromagnetic component 7 and the armature spring assembly 8 drives the connecting bracket 81 to move, which in turn drives the movable rod to move, allowing the vacuum relay to switch between different states. For example, the first stationary contact rod 11 can correspond to a normally closed contact, and the second stationary contact rod 12 can correspond to a normally open contact. Thus, when the transmission rod 2 contacts the first stationary contact rod 11, the normally closed contact closes, putting the vacuum relay in a normally closed state. When the transmission rod 2 contacts the second stationary contact rod 12, the normally open contact closes, putting the vacuum relay in a normally open state. Specifically, when the electromagnetic coil 72 is energized, it generates magnetism, causing the armature 82 to move. The armature 82 abuts against the surface of the magnetic guide cylinder 71 and the top wall of 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 and contact the second stationary contact rod 12, making the vacuum relay normally open. When the electromagnetic coil 72 is de-energized, the armature 82 is reset by the action of the connecting bracket 81. During the reset process, the connecting bracket 81 drives the transmission rod 2 to move to the first stationary contact rod 113 and make contact with it, so that the vacuum relay is normally closed.

[0095] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0096] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. A stationary reed for a vacuum relay, characterized in that, The stationary reed for the vacuum relay includes: The movable through hole and a positioning groove disposed on at least one side of the movable through hole, the positioning groove being disposed on a first surface of the stationary spring sheet, the first surface being a surface intersecting the extending direction of the axis of the movable through hole; The bottom of the positioning groove is inclined in a direction away from the first surface along a first direction, so that the distance between the bottom of the positioning groove and the first surface increases sequentially along the first direction; or, the bottom of the positioning groove is inclined in a direction closer to the first surface along a first direction, so that the distance between the bottom of the positioning groove and the first surface decreases sequentially along the first direction, wherein the first direction is the direction in which the positioning groove points to the movable through hole.

2. The stationary reed for a vacuum relay according to claim 1, characterized in that, The orthographic projection of the movable through hole along the second direction onto the first surface at least partially coincides with the orthographic projection of the positioning groove along the second direction onto the first surface, wherein the second direction is parallel to the axis of the movable through hole.

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

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

5. A stationary spring assembly for a vacuum relay according to claim 4, characterized in that, The stationary spring assembly includes a first stationary contact rod, a second stationary contact rod, and at least two stationary spring plates arranged along a second direction; At least one side of each of the stationary springs that has the movable through hole is provided with the positioning groove, the first stationary contact rod is provided in the positioning groove of one of the two adjacent stationary springs, and the second stationary contact rod is provided in the positioning groove of the other of the two adjacent stationary springs.

6. A stationary spring assembly for a vacuum relay according to claim 5, characterized in that, The first surfaces of two adjacent stationary spring sheets are disposed opposite each other in the second direction, which is parallel to the axis of the movable through hole; Each of the stationary spring sheets has a first positioning groove and a second positioning groove spaced apart along the first direction on its first surface. The bottom of the first positioning groove is inclined away from the first surface along the first direction, and the distance between the bottom of the first positioning groove and the first surface increases sequentially along the first direction. The bottom of the second positioning groove is inclined away from the first surface along the first direction, and the distance between the bottom of the second positioning groove and the first surface increases sequentially along the first direction. The first stationary contact rod is fixed in a first positioning groove of one of the two adjacent stationary springs, and the second stationary contact rod is fixed in a second positioning groove of the other of the two adjacent stationary springs.

7. A static spring assembly for a vacuum relay according to claim 6, wherein The first positioning groove has a first notch structure on the side facing the second positioning groove, and the first notch structure is connected to the movable through hole. The second positioning groove has a second notch structure on the side facing the first positioning groove, and the second notch structure is connected to the movable through hole. The first stationary contact rod is at least partially located at the first notch structure, and the second stationary contact rod is at least partially located at the second notch structure.

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

9. A stationary spring assembly for a vacuum relay according to claim 6, characterized in that, The maximum distance between the bottom of the first positioning groove and the first surface is the first distance, and the first distance is greater than or equal to half the size of the first stationary contact rod in the second direction; The maximum distance between the bottom of the second positioning groove and the first surface is the second distance, which is greater than or equal to half the size of the second stationary contact rod in the second direction.

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

11. A stationary spring assembly for a vacuum relay according to claim 5, characterized in that, The orthographic projection of the movable through hole along the second direction onto the first surface at least partially coincides with the orthographic projection of the first stationary contact rod along the second direction onto the first surface.

12. A vacuum relay, characterized in that, The vacuum relay includes a transmission rod and a stationary spring assembly for a vacuum relay as described in any one of claims 4 to 11; The transmission rod is movably connected in the movable through hole to move closer to or further away from the stationary contact rod.

13. The vacuum relay according to claim 12, characterized in that, The vacuum relay also includes a housing; The housing includes a base and an outer shell, the base being fixed to the end of the outer shell in a second direction, and the interior of the housing also having at least one auxiliary spring. The auxiliary spring is located between the stationary spring and the base. The auxiliary spring has a mounting through hole that is coaxial with the movable through hole along the second direction. The transmission rod passes through the mounting through hole and is movably connected in the movable through hole. The second direction is parallel to the axis of the movable through hole.

14. The vacuum relay according to claim 12, characterized in that, The vacuum relay also includes an electromagnetic component and an armature spring assembly; The electromagnetic component includes a magnetic cylinder and an electromagnetic coil, the electromagnetic coil being disposed in the magnetic cylinder, and the armature spring assembly being disposed on the top wall of one end of the magnetic cylinder; The armature spring assembly includes a connecting bracket, the end of which, away from the magnetic cylinder, is movably connected to the transmission rod.

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