Linkage structure of multi-pole contact of dual-power change-over switch

Abstract

The utility model relates to a linkage structure of a multi-pole contact of a dual-power change-over switch, comprising a rotating shaft which is a metal shaft; the handle is mounted at one end of the rotating shaft and synchronously rotates with the rotating shaft under the action of external force; the multi-pole contact is linked with the rotating shaft; the multi-pole contact comprises at least two poles of moving contact assemblies which are arranged on a rotating shaft along the axial direction; one end of the driving shaft is connected with the electromagnetic driving device, and the other end is axially mounted on the other side of the handle relative to the rotating shaft; under the action of the electromagnetic driving device, the driving shaft can horizontally move in the direction perpendicular to the rotating shaft, and then the handle and the rotating shaft are driven to rotate. In the scheme, the linkage structure comprises the rotating shaft, the handle, the multi-pole contact and the driving shaft, the rotating shaft is a metal shaft, the handle and the multi-pole contact are both sleeved on the metal shaft, the driving shaft is installed on the handle, the metal shaft is used as a linkage piece, the handle, the multi-pole contact and the metal shaft are in synchronous linkage, and the linkage consistency is good.

Description

Technical Field

[0001] This utility model relates to the field of power switch technology, and in particular to a linkage structure of multi-pole contacts of a dual power supply switching switch. Background Technology

[0002] Dual power transfer switches, as key devices ensuring power continuity, are widely used in data centers, medical facilities, and industrial automation. Their core function lies in the rapid and reliable switching between the main power supply and the backup power supply, while the synchronous linkage performance of the multi-pole contacts directly determines the stability and safety of the switch.

[0003] Dual power transfer switches typically consist of two modules: a drive module and a main circuit switching module. The main circuit switching module can be classified as 1-pole, 2-pole, 3-pole, or 4-pole. During the drive switching process, it is necessary to reliably transmit the force value of the drive module to the main circuit module and maintain the linkage consistency between the poles of the main circuit module.

[0004] Existing dual-power transfer switches, where the drive module is motor-controlled, lack a handle. The motor has a central shaft, and its rotation drives the linkage between the poles. However, products typically driven by electromagnetic coils lack a metal shaft for pole-to-pole linkage; instead, they rely on a long plastic handle to mount the moving contact. When the product is powered on, the moving contact heats up. Prolonged exposure to this dry, hot environment causes the plastic to lose internal moisture, reducing its performance and leading to embrittlement, deformation, or even breakage, ultimately causing transmission failure. Furthermore, the low elastic modulus of plastic makes it prone to accumulating minute deformations during frequent switching, resulting in asynchronous action of the multi-pole contacts, increasing contact resistance, and increasing the risk of arcing. Summary of the Invention

[0005] To address the aforementioned problems, the present invention aims to provide a linkage structure for multi-pole contacts of a dual-power switching switch. This linkage structure is a transmission method that combines a handle and a metal shaft. The metal shaft serves as the linkage component, with the handle and the moving contacts of each pole mounted on it, thus providing linkage between the multiple poles of the product. A drive shaft connected to an electromagnetic drive device is then installed on the handle, enabling the handle to rotate. The reliability and stability of the metal shaft are superior to those of plastic, resulting in high assembly stability between the metal shaft and each pole, thereby ensuring high consistency in linkage between the poles. Furthermore, the use of the metal shaft simplifies the handle structure and facilitates assembly.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A linkage structure for a multi-pole contact of a dual-power switching switch, characterized in that it includes:

[0008] A rotating shaft, which is a metal shaft;

[0009] The handle is installed at one end of the rotating shaft and rotates synchronously with the rotating shaft under the action of external force;

[0010] A multi-pole contact is linked to a rotating shaft. The multi-pole contact includes at least two moving contact assemblies mounted axially on the rotating shaft. The moving contact assembly includes a rotor sleeved on the rotating shaft and a moving contact rod mounted on the rotor. Moving contacts are welded to the upper and lower sides of both ends of the moving contact rod.

[0011] The drive shaft is connected to an electromagnetic drive device at one end and mounted on the other side of the handle along the axial direction relative to the rotation axis at the other end. Under the action of the electromagnetic drive device, the drive shaft can move horizontally in a direction perpendicular to the rotation axis, thereby driving the handle and the rotation axis to rotate.

[0012] Preferably, the rotating shaft is square, the rotor has a square mounting hole that is interference-fitted with the rotating shaft, and the lower part of the handle has a square connecting groove that is interference-fitted with the rotating shaft.

[0013] Preferably, the rotor includes a rotating column and protrusions formed axially on both sides of the rotating column. The outer diameter of the protrusions is smaller than the outer diameter of the rotating column, and the protrusions of adjacent rotors are arranged to abut against each other. A connecting column is laterally constructed at the lower part of the handle, and the outer end of the connecting column protrudes from the inner end face of the handle and abuts against the adjacent protrusion.

[0014] Multiple partitions are longitudinally constructed on a base, and an active area for accommodating the moving contact assembly is formed between adjacent partitions. The middle of the partition is recessed downward to form a mounting platform, and the rotor is mounted on the mounting platform. The middle of the mounting platform is recessed downward to form an arc-shaped mounting groove, and the rotating column is located in the active area. The protruding column and the connecting column are adapted to be mounted in the mounting groove.

[0015] Preferably, a limiting block is provided at one end of the rotating shaft relative to the handle, and the limiting block abuts against the adjacent protrusion.

[0016] Preferably, the handle has a connecting seat in the middle, and a connecting hole is provided through the connecting seat along the axial direction. The drive shaft connected to the electromagnetic drive device is inserted into the connecting hole.

[0017] Preferably, the connector has a reinforcing seat extending from the side opposite to the multi-pole contact, and the connecting hole extends through the reinforcing seat; the reinforcing seat has multiple reinforcing ribs on its periphery.

[0018] Preferably, the drive shaft has an axially cut notch, and the drive shaft is tensioned in the connecting hole.

[0019] Preferably, the upper part of the handle is provided with a mounting base, and the mounting base has a longitudinally constructed insertion hole for connecting to the lever.

[0020] The present invention adopts the above technical solution and has the following beneficial effects:

[0021] ① Interlocking Consistency and Reliability: This interlocking structure includes a rotating shaft, a handle, a multi-pole contact, and a drive shaft. The rotating shaft is a metal shaft, and the handle and multi-pole contact are both mounted on the metal shaft. The drive shaft is mounted on the handle. Using the metal shaft as the interlocking component, the handle, multi-pole contact, and metal shaft move synchronously. The metal shaft is resistant to high temperatures, aging, and deformation, and its lifespan is significantly longer than that of plastic structures, avoiding the deformation problems of traditional plastic structures and ensuring high reliability. Furthermore, the square fit structure between the metal shaft, rotor, and handle ensures transmission rigidity and synchronization, further improving interlocking consistency.

[0022] When the electromagnetic drive device is activated, the drive shaft moves horizontally, causing the handle and rotating shaft to rotate; the multi-pole rotor rotates synchronously, and the moving contact rod swings to achieve contact or separation between the moving contact and the stationary contact, thereby realizing power switching.

[0023] ② Ease of installation: The modular design of the drive shaft, handle, metal shaft and multi-pole contacts allows the handle and multi-pole contacts to be directly mounted on the metal shaft. One end of the drive shaft is tightened and pressed into the handle, making assembly convenient. By adjusting the shaft length and the number of contacts, it can quickly adapt to different pole number requirements and has strong scalability. Attached Figure Description

[0024] Figure 1 This is a three-dimensional structural diagram of a linkage structure for a multi-pole contact of a dual-power switching switch.

[0025] Figure 2 This is a schematic diagram of the assembly of the rotating shaft and the rotor.

[0026] Figure 3 This is a schematic diagram of the rotor's three-dimensional structure.

[0027] Figure 4 This is a schematic diagram of the three-dimensional structure of the handle.

[0028] Figure 5 This is a three-dimensional structural diagram of the handle from another perspective.

[0029] Figure 6 This is a three-dimensional structural diagram of the rotation axis.

[0030] Figure 7 This is a three-dimensional structural diagram of the drive shaft.

[0031] Figure 8 This is a schematic diagram showing the arrangement of the mounting slots on the base.

[0032] Figure 9 This is a schematic diagram showing the arrangement of the linkage structure of the multi-pole contacts on the base. Detailed Implementation

[0033] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0034] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model 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. Therefore, they should not be construed as limitations on this utility model.

[0035] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more, unless otherwise expressly defined.

[0036] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., 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 of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0037] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0038] like Figures 1-9 The linkage structure of a multi-pole contact of a dual-power switching switch shown includes:

[0039] Rotating shaft 1, which is a metal shaft;

[0040] Handle 2 is installed at one end of the rotating shaft 1 and rotates synchronously with the rotating shaft 1 under the action of external force;

[0041] A multi-pole contact is linked to a rotating shaft 1. The multi-pole contact includes at least two moving contact assemblies mounted axially on the rotating shaft 1. The moving contact assembly includes a rotor 3 sleeved on the rotating shaft 1 and a moving contact rod 4 mounted on the rotor 3. Moving contacts 5 are welded to the upper and lower sides of both ends of the moving contact rod 4.

[0042] The drive shaft 6 is connected to the electromagnetic drive device at one end and is mounted on the other side of the handle 2 along the axial direction relative to the rotation shaft 1. Under the action of the electromagnetic drive device, the drive shaft 6 can move horizontally in a direction perpendicular to the rotation shaft 1, thereby driving the handle 2 and the rotation shaft 1 to rotate.

[0043] In the above technical solution, the linkage structure includes a rotating shaft, a handle, a multi-pole contact, and a drive shaft. The rotating shaft is a metal shaft, and the handle and multi-pole contact are both mounted on the metal shaft. The drive shaft is mounted on the handle. Using the metal shaft as the linkage component, the handle, multi-pole contact, and metal shaft are synchronously linked, resulting in good linkage consistency. The metal shaft is resistant to high temperatures, aging, and deformation, and its lifespan is significantly better than that of plastic structures, avoiding the deformation problems of traditional plastic structures and ensuring high reliability. When the electromagnetic drive device is activated, the drive shaft moves horizontally, driving the handle and rotating shaft to rotate. The multi-pole rotor rotates synchronously, and the moving contact rod swings to achieve contact or separation between the moving contact and the stationary contact, realizing power switching.

[0044] Furthermore, the rotating shaft 1 is square, and the rotor 3 has a square mounting hole 7 that is interference-fitted with the rotating shaft 1. The lower part of the handle 2 has a square connecting groove 8 that is interference-fitted with the rotating shaft 1. In this technical solution, the anti-slip design prevents relative sliding during rotation by fitting the square shaft with the hole, ensuring transmission rigidity and synchronization, and improving transmission accuracy. The interference fit simplifies the assembly steps, eliminates the need for additional fasteners, and reduces assembly costs.

[0045] Furthermore, the rotor 3 includes a rotating column 9 and protruding columns 10 formed axially on both sides of the rotating column 9. The outer diameter of the protruding column 10 is smaller than the outer diameter of the rotating column 9, and the protruding columns 10 of adjacent rotors 3 are arranged to abut against each other. A connecting column 11 is laterally constructed at the lower part of the handle 2. The outer end of the connecting column 11 protrudes from the inner end face of the handle 2 and abuts against the adjacent protruding column 10.

[0046] A base 12 has multiple partitions 13 longitudinally constructed, and an active area for accommodating the moving contact assembly is formed between adjacent partitions 13. The middle part of the partition 13 is recessed downward to form a mounting platform 14, on which the rotor 3 is mounted. The middle part of the mounting platform 14 is recessed downward to form an arc-shaped mounting groove 15, in which the rotating column 9 is located. The protruding column 10 and the connecting column 11 are adapted to be mounted in the mounting groove 15.

[0047] In the above technical solution, the setting of the protruding post on the rotor can increase the connection area between the rotating post and the metal rotating shaft, improve the synchronization between each pole and the metal rotating shaft, and at the same time, the protruding post can make an axial gap between each pole, reducing interference during operation. Furthermore, the protruding post is compatible with the arc-shaped mounting groove to ensure that the multi-pole contacts rotate synchronously and are easy to install.

[0048] Furthermore, a limiting block 16 is provided on one end of the rotating shaft 1 relative to the handle 2 with an interference fit. The limiting block 16 abuts against the adjacent protrusion 10. In this technical solution, the limiting block plays a limiting role, preventing axial displacement of the rotor during rotation, constraining the rotor position, reducing component displacement caused by vibration or impact, and improving stability.

[0049] Furthermore, a connecting seat 17 is provided in the middle of the handle 2, and a connecting hole 18 is provided through the connecting seat 17 along the axial direction. The drive shaft 6, which is connected to the electromagnetic drive device, is inserted into the connecting hole 18. In this technical solution, the drive shaft and the connecting hole of the handle connecting seat are inserted and matched, which is convenient for installation. The handle can be rotated by moving the drive shaft laterally, which quickly applies the force transmitted on the electromagnetic drive device to the rotating shaft and improves the consistency of linkage.

[0050] Furthermore, the connecting seat 17 extends to the side opposite to the multi-pole contact and is provided with a reinforcing seat 19, through which the connecting hole 18 extends; the reinforcing seat 19 is provided with multiple reinforcing ribs 23 on its periphery. In this technical solution, the setting of the reinforcing seat can increase the contact area between the drive shaft and the handle, and can quickly transmit the force acting on the drive shaft to the handle, further improving the linkage consistency of the drive shaft, handle and rotating shaft; the reinforcing ribs improve the structural strength of the reinforcing seat.

[0051] Furthermore, the drive shaft 6 has an axially cut notch 20, and the drive shaft 6 is tensioned and fitted onto the connecting hole 18. In this technical solution, the notch facilitates the insertion of the drive shaft into the connecting hole, and the tensioning fit after insertion eliminates gaps and improves stability.

[0052] Furthermore, the upper part of the handle 2 is provided with a mounting base 21, and the mounting base 21 has a vertically constructed insertion hole 22 for connecting to the lever. In this technical solution, the lever can be inserted into the insertion hole to rotate the handle, so that the linkage structure supports manual / automatic switching mode, meets the needs of diverse usage scenarios, and improves operational flexibility.

[0053] In this specific embodiment, addressing the problem of short lifespan and transmission failure caused by the linkage structure between poles in existing dual-power transfer switches, the above solution introduces a new linkage structure. This linkage structure includes a rotating shaft, a handle, multi-pole contacts, and a drive shaft. The rotating shaft is a metal shaft, and the handle and multi-pole contacts are mounted on it. The drive shaft is mounted on the handle, using the metal shaft as the linkage component, enabling synchronous linkage between the handle, multi-pole contacts, and the metal shaft. The metal shaft is resistant to high temperatures, aging, and deformation, with a significantly longer lifespan than plastic structures, avoiding the deformation problems of traditional plastic structures and ensuring high reliability. Furthermore, the metal shaft simplifies the handle structure; for multi-pole products, only the length of the metal shaft needs to be changed, and the number of moving contacts required for each pole can be added or removed accordingly. Therefore, using an electromagnetic drive transfer switch with a handle optimizes the consistency, reliability, and ease of installation of the linkage.

[0054] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "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 the present invention. 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.

[0055] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention without departing from the principles and spirit of the present invention.

Claims

1. A linkage structure for a multi-pole contact of a dual-power switching switch, characterized in that: include: Rotating shaft (1), which is a metal shaft; The handle (2) is installed at one end of the rotating shaft (1) and rotates synchronously with the rotating shaft (1) under the action of external force; A multi-pole contact is linked to a rotating shaft (1). The multi-pole contact includes at least two moving contact assemblies mounted axially on the rotating shaft (1). The moving contact assembly includes a rotor (3) sleeved on the rotating shaft (1) and a moving contact rod (4) mounted on the rotor (3). Moving contacts (5) are welded to the upper and lower sides of both ends of the moving contact rod (4). The drive shaft (6) is connected to the electromagnetic drive device at one end and installed on the other side of the handle (2) along the axial direction relative to the rotating shaft (1). Under the action of the electromagnetic drive device, the drive shaft (6) can move horizontally in a direction perpendicular to the rotating shaft (1), thereby driving the handle (2) and the rotating shaft (1) to rotate.

2. The linkage structure of a multi-pole contact of a dual-power switching switch according to claim 1, characterized in that: The rotating shaft (1) is square, and the rotor (3) is provided with a square mounting hole (7) that is interference fit with the rotating shaft (1). The lower part of the handle (2) is provided with a square connecting groove (8) that is interference fit with the rotating shaft (1).

3. The linkage structure of a multi-pole contact of a dual-power switching switch according to claim 2, characterized in that: The rotor (3) includes a rotating column (9) and protrusions (10) formed axially on both sides of the rotating column (9). The outer diameter of the protrusions (10) is smaller than the outer diameter of the rotating column (9). The protrusions (10) of adjacent rotors (3) are arranged to abut against each other. A connecting column (11) is laterally constructed at the lower part of the handle (2). The outer end of the connecting column (11) protrudes from the inner end face of the handle (2) and abuts against the adjacent protrusions (10). A base (12) has multiple partitions (13) longitudinally constructed on it. An active area for accommodating the moving contact assembly is formed between adjacent partitions (13). The middle part of the partition (13) is recessed downward to form a mounting platform (14). The rotor (3) is mounted on the mounting platform (14). The middle part of the mounting platform (14) is recessed downward to form an arc-shaped mounting groove (15). The rotating column (9) is located in the active area. The protruding column (10) and the connecting column (11) are adapted to be mounted in the mounting groove (15).

4. The linkage structure of a multi-pole contact of a dual-power switching switch according to claim 3, characterized in that: A limiting block (16) is provided on one end of the rotating shaft (1) relative to the handle (2) with an interference fit. The limiting block (16) abuts against the adjacent protrusion (10).

5. The linkage structure of a multi-pole contact of a dual-power switching switch according to claim 2, characterized in that: The handle (2) is provided with a connecting seat (17) in the middle, and a connecting hole (18) is provided through the connecting seat (17) along the axial direction. The drive shaft (6) connected to the electromagnetic drive device is inserted into the connecting hole (18).

6. The linkage structure of a multi-pole contact of a dual-power switching switch according to claim 5, characterized in that: The connecting seat (17) extends to the side opposite to the multi-pole contact and is provided with a reinforcing seat (19), and the connecting hole (18) extends through the reinforcing seat (19); the reinforcing seat (19) is provided with multiple reinforcing ribs (23) around its periphery.

7. The linkage structure of a multi-pole contact of a dual-power switching switch according to claim 6, characterized in that: The drive shaft (6) has an axially cut notch (20) and the drive shaft (6) is tensioned on the connecting hole (18).

8. The linkage structure of a multi-pole contact of a dual-power switching switch according to claim 7, characterized in that: The upper part of the handle (2) is provided with a mounting base (21), and the mounting base (21) has a longitudinally constructed insertion hole (22) connected to the lever.

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