Driving assembly of dual-power change-over switch

Abstract

The utility model discloses a driving assembly of a dual power supply change-over switch, the driving assembly of the dual power supply change-over switch comprises a transmission driving plate assembly and driving assemblies arranged at two sides of a driving plate, the driving assemblies are provided with guiding members, the driving assemblies are provided with movable iron cores capable of moving in a horizontal direction, and the movable iron cores are arranged in the guiding members in a sliding manner. A contact hook is arranged on one side of the movable iron core and used for driving the transmission drive plate assembly to rotate; the transmission drive plate assembly is provided with a first column body which avoids the contact hook and enables the contact hook to be reset to the initial position, and the movable iron core is provided with a spring. The movable iron core is accurately guided through the guide piece, so that the movable iron core can be rapidly and accurately reset after multiple reciprocating actions, clamping stagnation of the contact hook is avoided, and the smoothness of the operating mechanism is effectively improved; a reset spring of the contact hook is omitted through the first column body, so that the linkage action steps of a mechanical structure and the contact hook are simplified, the fault occurrence rate is reduced, the stability and reliability of the operating mechanism are enhanced, and a product has the advantages of preventing clamping stagnation and reducing the fault rate.

Description

Technical Field

[0001] This utility model relates to the field of switchgear technology, and in particular to a drive component for a dual power transfer switch. Background Technology

[0002] The dual power transfer switch mainly consists of a main / standby power transfer switch, a transfer actuator, and a controller. The controller monitors and collects the switch status in real time through a sampling line, and drives the actuator based on the monitored status information to realize the switching of power supply, thereby switching from a faulty power supply to a normal power supply. This ensures the stability of the power supply to the load end and the smooth and reliable operation of the load equipment.

[0003] According to the authorized publication number CN212625229U, "Electromagnetic Drive Mechanism and Dual Power Transfer Switch," an electromagnetic drive mechanism and a dual power transfer switch having the electromagnetic drive mechanism are disclosed. The electromagnetic drive mechanism includes: a drive member movable from a first position to a second position under the action of an electromagnet, the drive member being biased toward the first position, and a first end of the drive member fixedly connected to the moving iron core of the electromagnet; a lever pivotally mounted on the drive member; and a rotating member connected to the moving contact, such that rotation of the rotating member can drive the moving contact to move, the rotating member further including an actuating part; wherein the drive member is biased relative to the longitudinal centerline of the moving iron core, and the lever extends toward the rotating member, such that the contact position between the lever and the actuating part is located at or near the longitudinal centerline of the moving iron core.

[0004] The above technical solution has the following defects: after the lever performs a switching action, it needs to be returned to its initial position in a timely and reliable manner. However, the lever is pivotally mounted on the drive component and requires an additional return spring. The function of the return spring is to allow the lever to abut against the blocking part to contact the initial position of the actuator and to pass over the actuator.

[0005] With continuous and prolonged use of the dual-power transfer switch, after the lever performs multiple rotational avoidance actions, its return spring undergoes repeated stretching and energy release. This repeated mechanical action gradually reduces the elastic potential energy of the return spring, thus affecting the return performance of the lever. Specifically, the lever cannot quickly and accurately return to its original position after passing the actuation part, resulting in a jamming phenomenon. This jamming not only affects the movement trajectory of the lever itself but also adversely affects the smoothness of the entire operating mechanism, leading to a decrease in the operating efficiency of the dual-power transfer switch or malfunctions. Therefore, the applicant has made beneficial designs and found a solution to the above problems. The technical solution described below arose in this context. Summary of the Invention

[0006] The purpose of this invention is to overcome the shortcomings of the above-mentioned technical solutions and provide a product that prevents jamming and reduces the failure rate.

[0007] To solve the above problems, the present invention adopts the following technical solution.

[0008] A drive assembly for a dual-power transfer switch includes a transmission dial assembly and drive components disposed on both sides of the dial. The drive components are provided with guide members and a horizontally movable iron core slidably disposed within the guide members. A hook is provided on one side of the movable iron core for driving the transmission dial assembly to rotate. The transmission dial assembly is provided with a first column that avoids the hook and returns it to its initial position. The movable iron core is provided with a spring that acts on the movable iron core to return it to its original position.

[0009] Preferably, the drive assembly includes a coil frame, a yoke fixed on the coil frame, and a coil wound around the outer wall of the coil frame, wherein the coil frame has a chamber for the moving iron core to move.

[0010] Preferably, the yoke has a stationary iron core embedded in the cavity, the spring is disposed between the stationary iron core and the moving iron core, and the moving iron core has an anti-displacement post to limit the displacement of the spring.

[0011] Preferably, the guide member is provided with a mounting part and is fixedly mounted on one end face of the yoke. The guide member is provided with a limiting through hole, and the limiting through hole is provided with a pin that passes through the hook to prevent the hook from rotating on the moving iron core.

[0012] Preferably, the transmission dial assembly includes dials disposed at both ends of the first column, the dials having guide grooves on both sides for the first column to move, and a clearance groove on one side of the guide groove for the avoidance hook to return to its initial position.

[0013] Preferably, the dial is further provided with second pillars at both ends and located behind the first pillar. The upper and lower ends of the first and second pillars are provided with tension springs to reset the first pillar after it has been moved aside. A distance is left between the tension springs for the hook to move.

[0014] Preferably, the head of the hook is provided with a protrusion, and the hook is provided with a guide surface for guiding the movement of the first column at a position opposite to the protrusion.

[0015] Beneficial effects:

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0017] (1) This utility model provides more precise guiding movement for the moving iron core through the guide component. This design enables the moving iron core to maintain rapid and accurate reset performance after multiple reciprocating actions, thereby effectively avoiding the problem of the hook getting stuck during operation. This not only improves the operating efficiency of the equipment, but also ensures the smoothness and stability of the operating mechanism.

[0018] (2) By designing the first column, this utility model avoids the step of the touch hook reset action in the technical solution in the background technology. Furthermore, the touch hook can directly and smoothly drive the transmission dial assembly to rotate without the need for an external reset spring. This not only simplifies the mechanical structure but also significantly reduces the failure rate, bringing higher stability and reliability to the entire operating mechanism and ensuring the long-term and stable operation of the equipment. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the drive assembly of a dual power supply changeover switch according to the present invention;

[0020] Figure 2 This is a side cross-sectional view of the drive assembly of a dual power supply changeover switch according to the present invention.

[0021] Figure 3 This is a cross-sectional view of the drive assembly of a dual-power transfer switch according to the present invention.

[0022] Figure 4 This utility model Figure 3 A partial enlarged view A of a drive assembly for a dual-power transfer switch;

[0023] Figure 5 This is a schematic cross-sectional view of the drive assembly of a dual-power transfer switch according to the present invention when the second power source is energized.

[0024] Figure 6 This is a cross-sectional view of the drive assembly of a dual-power transfer switch according to the present invention when the first power source is energized.

[0025] Figure 7 This is a schematic diagram of the holding device of the drive assembly of a dual power supply changeover switch according to the present invention.

[0026] The correspondence between the labels and component names in the attached figures is as follows:

[0027] Reference numerals: 1. Transmission dial assembly; 2. Drive assembly; 3. Guide component; 4. Moving iron core; 5. Hook; 6. Spring; 11. First column; 12. Dial; 13. Second column; 14. Tension spring; 121. Guide groove; 122. Relief groove; 21. Coil frame; 22. Yoke; 23. Coil; 211. Chamber; 221. Stationary iron core; 31. Mounting part; 32. Pin; 33. Limiting through hole; 41. Anti-detachment column; 51. Protrusion; 52. Guide surface. Detailed Implementation

[0028] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0029] In the description of this utility model, it should be understood that the terms "upper", "lower", "left", "right", 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.

[0030] In this embodiment of the utility model, "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0031] Reference example Figures 1 to 6 A drive assembly for a dual power supply changeover switch includes a transmission dial 12 assembly 1 and drive assemblies 2 disposed on both sides of the dial 12. The drive assembly 2 is provided with a guide 3 and a horizontally movable iron core 4, which is slidably disposed within the guide 3. A hook 5 is provided on one side of the movable iron core 4 for driving the transmission dial 12 assembly 1 to rotate. The transmission dial 12 assembly 1 is provided with a first column 11 that avoids the hook 5 and resets it to its initial position. The movable iron core 4 is provided with a spring 6, which acts on the movable iron core 4 to reset the movable iron core 4.

[0032] It is worth mentioning that the drive assembly 2 includes a coil frame 21, a yoke 22 fixed on the coil frame 23, and a coil 23 wound on the outer wall of the coil frame 21. The coil frame 21 is provided with a chamber 211 for the moving iron core 4 to move. The chamber 211 not only accommodates the moving iron core 4, but also provides it with precise guidance, ensuring that the moving iron core 4 can maintain rapid and accurate reset performance after multiple reciprocating actions, effectively improving the operating efficiency and stability of the equipment.

[0033] It is worth mentioning that the yoke 22 has a stationary iron core 221 embedded in the cavity 211. The spring 6 is set between the stationary iron core 221 and the moving iron core 4. After the coil 23 is energized, the yoke 22 and the stationary iron core 221 form a magnetic flux circuit. The magnetic flux will pass through the closed circuit formed by the moving iron core 4 and the stationary iron core 221, which magnetizes the moving iron core 4 and the stationary iron core 221 and generates an electromagnetic attraction force that attracts each other. When the attraction force overcomes the reaction force of the spring 6, the moving iron core 4 will move towards the stationary iron core 221, causing the moving iron core 4 to retract into the cavity 211. Once the coil 23 is de-energized, the spring 6 releases its elastic force, pushing the moving iron core 4 to quickly return to its original position.

[0034] It is worth mentioning that the guide member 3 is provided with a mounting part 31 and is fixedly mounted on one end face of the yoke 22. The guide member 3 is provided with a limiting through hole 33, and a pin 32 is provided in the limiting through hole 33 and passes through the hook 5 to prevent the hook 5 from rotating on the moving iron core 4. The limiting through hole 33 limits the range of reciprocating motion of the hook 5. The two ends of the pin 32 are usually equipped with snap rings to prevent them from disengaging from the limiting through hole 33, and are provided with gaskets to reduce friction with the guide member 3, or other similar components to ensure that the pin 32 is fixed. This design is a well-known technology and will not be described in detail here.

[0035] It is worth mentioning that the transmission dial 12 assembly 1 includes dials 12 disposed at both ends of the first column 11. The dials 12 are provided with guide grooves 121 on both sides for the first column 11 to move. One side of the guide grooves 121 is provided with a clearance groove 122 to avoid the touch hook 5 from resetting to the initial position. The guide grooves 121 and clearance grooves 122 are designed to be inclined towards the middle of the dials 12. The clearance groove 122 avoids the dials 12 from touching the guide member 3 after rotation and interfering with it, thus ensuring the smooth movement of the touch hook 5.

[0036] It is worth mentioning that the dial 12 is also fixed with second pillars 13 at both ends, located behind the first pillar 11. The upper and lower ends of the first pillar 11 and the second pillar 13 are provided with tension springs 14 to reset the first pillar 11 after it has passed the first pillar 11. A distance is left between the tension springs 14 for the hook 5 to move. The second pillar 13 provides a support point for the tension springs 14. The two tension springs 14 ensure that the first pillar 11 immediately resets after passing the hook 5, preparing for the next rotation of the dial 12, thus ensuring the continuity of the dial 12's movement. The dial 12 is usually equipped with an operating shaft and a transmission mechanism hinged to both ends of the operating shaft. When the dial 12 rotates... After the movement, a retaining device is provided to prevent the dial 12 from shifting due to the pushing force when the hook 5 is reset. For example, the retaining device has an elastic element on one side of the upper transmission mechanism and an elastic element on the other side of the lower transmission mechanism. The upper and lower transmission mechanisms form opposing elastic elements. When either transmission mechanism is activated, the upper and lower transmission mechanisms form a V-shaped structure, and the V-shaped structures of the upper and lower transmission mechanisms are mutually opposed. The release of energy by the elastic element allows the V-shaped structure to be maintained, thereby keeping the dial 12 in the position after rotation. Since this design is not a protected technical point of this application, it is described here. The specific structure is shown in the attached figure. Figure 7 As shown;

[0037] It is worth mentioning that the head of the hook 5 is provided with a protrusion 51, and the hook 5 is provided with a guide surface 52 for guiding the movement of the first column 11 at a position away from the protrusion 51. The protrusion 51 ensures that the hook 5 is stable and does not detach when it contacts the first column 11 or the second column 13. The guide surface 52 is inclined. The guide surface 52 not only effectively guides the hook 5, but also significantly reduces the pushing force and friction, making the avoidance action of the first column 11 smoother and improving the operating efficiency of the linkage of the operating mechanism.

[0038] The working principle of this utility model is described as follows:

[0039] Example 1

[0040] The initial actions of the operating mechanism are as follows: Figure 3 As shown, when the drive component 2 on one side of the dial 12 is energized, the moving iron core 4 is affected by the magnetic force of the stationary iron core 221 and moves inward. The hook 5 moves towards the first column 11 and drives the dial 12 to rotate after contacting the first column 11. At this time, the second column 13 on one side of the dial 12 moves away from the drive component 2, and the second column 13 on the other side is in the inward position of the hook 5. When the pin 32 contacts the other end face of the limiting through hole 33, the dial 12 moves to the designated position and completes the switching of the main and backup power.

[0041] Example 2

[0042] The state of the operating mechanism after it is activated is shown in the attached figure. Figure 5As shown, when the drive assembly 2 loses power after the action, the stationary iron core 221 and the moving iron core 4 lose their magnetic holding force. The spring 6 releases its elastic force to push the moving iron core 4 to quickly reset. The hook 5 abuts against the first column 11 and pushes it to gradually move away from the hook 5 in the direction guided by the guide groove 121. At this time, the tension spring 14 is stretched by the first column 11 and enters the energy storage state. When the hook 5 resets to the initial position, the first column 11 is separated from the hook 5, and the tension spring 14 releases its energy to make the first column 11 quickly reset, preparing for the next movement of the dial 12.

[0043] Example 3

[0044] When the drive assembly 2 on the other side of the dial 12 is energized, the moving iron core 4 is affected by the magnetic force of the stationary iron core 221 and retracts inward. After the hook 5 contacts the second column 13, it drives the dial 12 to rotate and reset, and the operating mechanism returns to the position shown in the attached figure. Figure 3 As shown in the diagram, neither the main nor backup power supply of the dual power transfer switch is energized. After resetting, contact hook 5 immediately initiates the next pulling action, rapidly driving dial 12 to continue rotating, thus enabling rapid switching between the main and backup power supplies. The state of the operating mechanism after its action is shown in the attached diagram. Figure 6 As shown, it is important to note that this switching occurs within milliseconds, which is not only fast and efficient, but also does not affect the continuity and stability of the power supply.

[0045] The above design scheme can enable the product to achieve the advantages of preventing jamming and reducing the failure rate.

[0046] The above description, in conjunction with specific embodiments, provides a further detailed explanation of the present utility model. It should not be construed that the specific implementation of the present utility model is limited to these descriptions. For those skilled in the art, several simple deductions or substitutions can be made without departing from the concept of the present utility model, and all such deductions or substitutions should be considered to fall within the scope of protection defined by the claims submitted by the present utility model.

Claims

1. A drive assembly for a dual power transfer switch comprising a drive dial assembly (1) and drive assemblies (2) disposed on either side of the dial (12), characterised in that: The driving assembly (2) is provided with a guide piece (3), the driving assembly (2) is provided with a movable horizontal moving iron core (4), and the moving iron core (4) is slidably arranged in the guide piece (3), one side of the moving iron core (4) is provided with a touch hook (5) for driving the transmission dial assembly (1) to rotate; the transmission dial assembly (1) is provided with a first column (11) which avoids the touch hook (5) and resets to the initial position, the moving iron core (4) is provided with a spring (6) and acts on the moving iron core (4), so that the moving iron core (4) is reset.

2. The drive assembly of a dual power transfer switch according to claim 1, characterized in that: The driving assembly (2) comprises a coil holder (21), a yoke (22) fixed on the coil holder (21), and a coil (23) wound on the outer wall of the coil holder (21), and the coil holder (21) is provided with a cavity (211) for the movement of the moving iron core (4).

3. The drive assembly of a dual power transfer switch according to claim 2, characterized in that: The yoke (22) is provided with a static iron core (221) and is embedded in the cavity (211), and the spring (6) is arranged between the static iron core (221) and the moving iron core (4).

4. The drive assembly of a dual mains transfer switch according to claim 3, characterized in that: The guide piece (3) is provided with a mounting portion (31) and is fixedly mounted on one end face of the yoke (22), the guide piece (3) is provided with a limiting through hole (33), the limiting through hole (33) is provided with a pin shaft (32) and passes through the touch hook (5), and the limiting through hole (33) is used for preventing the touch hook (5) from rotating on the moving iron core (4).

5. The drive assembly of claim 1, wherein: The transmission dial assembly (1) comprises a dial (12) arranged at both ends of the first column (11), both sides of the dial (12) are provided with guide grooves (121) for the movement of the first column (11), and one side of the guide groove (121) is provided with a gap groove (122) for avoiding the reset of the touch hook (5) to the initial position.

6. The drive assembly of a dual mains transfer switch according to claim 5, characterized in that: Both ends of the dial (12) are further provided with a second column (13) and are located behind the first column (11), the first column (11) and the second column (13) are provided with a tension spring (14) at the upper and lower ends, for resetting the avoided first column (11), and the tension spring (14) leaves a distance for the movement of the touch hook (5).

7. The drive assembly of claim 1, wherein: The head of the touch hook (5) is provided with a protruding portion (51), and the touch hook (5) is provided with a guide surface (52) for guiding the movement of the first column (11) at a position away from the protruding portion (51).

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