Automatic transfer switch with single energy storage operating mechanism
By designing a single energy storage operating mechanism, the structure of the automatic transfer switch is simplified, solving the problems of large size and poor reliability of large-capacity integrated automatic transfer switches, thus achieving space saving and improved reliability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GUIZHOU TAIYONG CHANGZHENG TECH CO LTD
- Filing Date
- 2025-08-04
- Publication Date
- 2026-07-21
AI Technical Summary
Existing high-capacity integrated automatic transfer switches are complex in structure, large in size, and have poor reliability. The interlocking device between the operating mechanisms of the operating side and the standby side is prone to failure.
A single energy storage operating mechanism is adopted, including a linkage assembly, an energy storage operating mechanism and a reversing baffle. The switching between the power supply on the normal side and the standby side is realized by driving the intermediate linkage through the spring energy storage mechanism, which simplifies the structure and eliminates the intermediate interlocking device.
It achieves structural simplification in large-capacity applications, saves space, avoids the risk of intermediate interlock device failure, and improves reliability.
Smart Images
Figure CN224536893U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of low-voltage electrical technology, specifically relating to an automatic transfer switch with a single energy storage operating mechanism. Background Technology
[0002] Automatic transfer switchgear is a common low-voltage electrical appliance, often used in important power distribution applications. It is used to switch between two power sources, ensuring that when the primary power source fails during power supply, it can quickly switch to the backup power source to ensure normal power supply to the load.
[0003] Existing integrated automatic transfer switches mostly use electromagnets, linear motors, or manual direct rotation to connect the main shaft of the primary or backup power supply side to move the contact system to the closed position. However, the force generated by the electromagnet is limited by its size, and direct manual operation also struggles to generate significant operating force, thus restricting the switch's capacity. Using the older electromagnet, linear motor, or manual operating system in a large-capacity integrated automatic transfer switch would require a very large size and result in poor reliability.
[0004] Patent application number 201110383503.8 discloses an operating system for an automatic transfer switch, including a gear set, a normal operating mechanism, a standby operating mechanism, an operating handle, a motor, and a side plate. The gear set is used for the energy storage operation of the independent normal operating mechanism and the standby operating mechanism. The normal operating mechanism is connected to a normal power supply, and the standby operating mechanism is connected to a standby power supply. The gear set includes: a normal driving wheel connected to the drive shaft of the normal operating mechanism, with a normal clutch mounted on it; a standby driving wheel connected to the drive shaft of the standby operating mechanism, with a standby clutch mounted on it; a normal transmission wheel and a standby transmission wheel, both connected to a common shaft, with the normal transmission wheel meshing with the normal driving wheel and the standby transmission wheel meshing with the standby driving wheel; and a reversing wheel meshing with the normal transmission wheel.
[0005] Patent application number 201210315582.3 discloses a changeover switch, installed between a normal power supply and a backup power supply, comprising: a front base and a rear base, a contact system, and an operating system. The front and rear bases together define a space. The contact system is installed within the space and connects and disconnects the circuit. The contact system includes moving contacts and stationary contacts, with the moving contacts having three working positions: a normal side, an intermediate position, and a backup side. The operating system is installed on the front base and is an energy storage mechanism that realizes the opening and closing operation. The operating mechanism is connected to the moving contacts via a linkage. The operating system includes a normal side operating mechanism and a backup side operating mechanism connected by a gear set. The normal side operating mechanism and the backup side operating mechanism are respectively installed on the upper and lower sides of the front base. An interlocking device is provided between the normal side operating mechanism and the backup side operating mechanism. The interlocking device ensures that the backup power supply is disconnected when the normal power supply is closed and ensures that the normal power supply is disconnected when the backup power supply is closed. The normal side operating mechanism and the backup side operating mechanism are connected to a handle or motor via a common shaft. The handle or motor completes the energy storage operation for both the commonly used side operating mechanism and the standby side operating mechanism within one rotation.
[0006] Conventional automatic transfer switches contain two sets of energy storage operating mechanisms (normal operating mechanism and standby operating mechanism), and there is an interlocking device between the normal operating mechanism and the standby operating mechanism. The interlocking device ensures that the standby power supply is disconnected when the normal power supply is closed, and ensures that the normal power supply is disconnected when the standby power supply is closed. The dual energy storage operating mechanism occupies a large volume space, has a complex structure, is difficult to install, and the intermediate interlocking device has the potential for failure. Utility Model Content
[0007] To address the aforementioned problems, the purpose of this utility model is to provide an automatic transfer switch with a single energy storage operating mechanism that can realize the closing of the power supply on the main side and the backup side through a single energy storage operating mechanism.
[0008] This utility model is achieved through the following technical solution: An automatic transfer switch with a single energy storage operating mechanism includes a base, a contact assembly system, an operating system, and a protective cover. The base, with the protective cover mounted on it, forms a hollow housing. The contact assembly system is mounted on the base within the hollow housing. The operating system is mounted above the contact assembly system (all of the above are prior art). The contact assembly system includes a primary power moving contact, a backup power moving contact, a first linkage assembly, and a second linkage assembly. One end of the first linkage assembly is connected to the primary power moving contact to drive its movement, and the other end has a slotted hole. One end of the second linkage assembly is connected to the backup power moving contact. The connection is used to drive the movement of the backup power supply moving contact, and the other end is provided with a strip-shaped slot hole identical to that of the first connecting rod assembly; the first connecting rod assembly and the second connecting rod assembly are cross-mounted in an X-shape and do not interfere with each other; the operating system includes an energy storage operating mechanism, an intermediate connecting rod, a fixed plate, and a reversing baffle; the fixed plate is provided with a V-shaped groove; the first connecting rod assembly and the second connecting rod assembly are located between the energy storage operating mechanism and the fixed plate; one end of the intermediate connecting rod is connected to the output end of the energy storage operating mechanism, and the other end passes sequentially through the V-shaped groove on the fixed plate, the strip-shaped slot hole on the first connecting rod assembly, and the strip-shaped slot hole on the second connecting rod assembly, and the intermediate connecting rod can move along the fixed plate. The V-groove slides; the reversing baffle is rotatably mounted on the fixed plate. By adjusting the installation position of the reversing baffle, the movement area of the intermediate connecting rod on the left or right side of the V-groove can be limited; the reversing baffle is irregularly shaped. When the reversing baffle rotates clockwise, it blocks the left end entrance of the V-groove on the fixed plate, allowing the intermediate connecting rod to move only to the upper right of the V-groove; when the reversing baffle rotates counterclockwise, it blocks the right end entrance of the V-groove on the fixed plate, allowing the intermediate connecting rod to move only to the upper left of the V-groove; the fixed plate is provided with a limit hole; a limit rod is installed on the reversing baffle. The limit rod moves within the limit hole on the fixed plate. The other end is connected to the drive device; the drive device is a manual button or an electric button; the energy storage operating mechanism is a spring energy storage mechanism, including an energy storage spring, a ratchet assembly and a release button; one end of the energy storage spring is connected to the base, and the other end is linked to the output end through the ratchet assembly; the release button is installed on the housing of the energy storage operating mechanism, and pressing the release button can trigger the ratchet assembly to unlock, so that the energy storage spring releases elastic potential energy and drives the output end to move; a damping plate is provided at the rotational connection between the reversing baffle and the fixed plate, the damping plate is sleeved on the rotating shaft, and the friction of the damping plate can keep the reversing baffle in its current position when there is no external driving force.
[0009] The beneficial effects of this utility model are: Compared with existing technologies, this invention saves an energy storage operating mechanism and an intermediate interlocking device, making the overall structure simpler, requiring less installation space, and avoiding the potential danger of intermediate interlocking device failure. Attached Figure Description
[0010] The present invention will now be described in further detail with reference to the accompanying drawings.
[0011] Figure 1 This is an exploded view of this utility model.
[0012] Figure 2 This is a schematic diagram of the contact assembly system described in this utility model.
[0013] Figure 3 This is a schematic diagram of the structure of the operating system described in this utility model.
[0014] Figure 4 This is the working state of the contact assembly system described in this utility model. Figure 1 .
[0015] Figure 5 This is the working state of the contact assembly system described in this utility model. Figure 2 .
[0016] Figure 6 This is the working state of the contact assembly system described in this utility model. Figure 3 .
[0017] Figure 7 This refers to the operating state of the operating system described in this utility model. Figure 1 .
[0018] Figure 8 This refers to the operating state of the operating system described in this utility model. Figure 2 .
[0019] Figure 9 This refers to the operating state of the operating system described in this utility model. Figure 3 .
[0020] As shown in the figure: 1-Base; 2-Contact assembly system; 21-Common power moving contact; 22-Spare power moving contact; 2a-Link assembly one; 2b-Link assembly two; 3-Operating system; 3a-Energy storage operating mechanism; 31a-Output end; 3c-Intermediate connecting rod; 31c-Connecting rod; 4-Protective cover; 5-Fixing plate; 51-V-groove; 6-Reversing baffle; 61-Limiting rod; 62-Limiting hole. Detailed Implementation
[0021] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification.
[0022] It should be understood that the structures, proportions, sizes, etc., depicted in the accompanying drawings are merely for illustrative purposes to aid those skilled in the art and to facilitate understanding. They are not intended to limit the scope of this invention and therefore have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, provided they do not affect the effectiveness or purpose of this invention, should still fall within the scope of the technical content disclosed herein. Furthermore, terms such as "upper," "lower," "left," "right," and "middle" used in this specification are merely for clarity and not intended to limit the scope of this invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of this invention.
[0023] In the description of this utility model, it should be noted that, unless otherwise expressly specified and limited, the terms "connected" or "linked" should be interpreted broadly. For example, it can refer to a fixed connection, a detachable connection, or an integral connection; it can refer to a mechanical connection or an electrical connection; it can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. It should be noted that the terms "comprising," "including," or any other variations are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus.
[0024] like Figures 1-9 As shown, an automatic transfer switch with a single energy storage operating mechanism includes a base 1, a contact assembly system 2, an operating system 3, and a protective cover 4. The base 1 is equipped with a protective cover 4 to form a hollow shell; The contact assembly system 2 is mounted on the base 1 inside the hollow housing. The contact assembly system 2 includes a standard power moving contact 21, a backup power moving contact 22, a first connecting rod assembly 2a, and a second connecting rod assembly 2b. The standard power moving contact 21 and the backup power moving contact 22 are conventional moving contacts, which achieve the closing of the switch by rotating and contacting and separating with the corresponding stationary contact. One end of the first connecting rod assembly 2a is connected to the standard power moving contact 21 to drive the standard power moving contact 21 to move, and the other end is provided with a strip-shaped slot. One end of the second connecting rod assembly 2b is connected to the backup power moving contact 22 to drive the backup power moving contact 22 to move, and the other end is provided with the same strip-shaped slot as the first connecting rod assembly 2a. The first connecting rod assembly 2a and the second connecting rod assembly 2b are installed in an X-shape and do not interfere with each other. The ends of the first connecting rod assembly 2a and the second connecting rod assembly 2b with strip-shaped slots extend into the horizontal plane of the upper operating system 3 and are connected and cooperate with the middle connecting rod 3c in the operating system 3.
[0025] The operating system 3 is installed above the contact assembly system 2; the operating system 3 includes an energy storage operating mechanism 3a, an intermediate connecting rod 3c, a fixed plate 5, and a reversing baffle 6; the fixed plate 5 is provided with a V-groove 51; the connecting rod assembly 2a and the connecting rod assembly 2b are located between the energy storage operating mechanism 3a and the fixed plate 5; one end of the intermediate connecting rod 3c is connected to the output end 31a of the energy storage operating mechanism 3a through a connecting rod 31c, and the other end passes sequentially through the V-groove 51 on the fixed plate 5, the strip slot on the connecting rod assembly 2a, and the strip slot on the connecting rod assembly 2b, and the intermediate connecting rod 3c can move along... The V-groove 51 on the fixed plate 5 slides; the reversing baffle 6 is rotatably mounted on the fixed plate 5, and by adjusting the installation position of the reversing baffle 6, the movement area of the intermediate connecting rod 3c on the left or right side of the V-groove 51 can be limited; the energy storage operation mechanism 3a is a spring energy storage mechanism, including an energy storage spring, a ratchet assembly and a release button; one end of the energy storage spring is connected to the base 1, and the other end is linked to the output end 31a through the ratchet assembly; the release button is mounted on the housing of the energy storage operation mechanism 3a, and pressing the release button can trigger the ratchet assembly to unlock, so that the energy storage spring releases elastic potential energy and drives the output end 31a to move.
[0026] The reversing baffle 6 is irregularly shaped. When the reversing baffle 6 rotates clockwise, it blocks the left entrance of the V-groove 51 on the fixing plate 5, allowing the intermediate connecting rod 3c to move only to the upper right of the V-groove 51. When the reversing baffle 6 rotates counterclockwise, it blocks the right entrance of the V-groove 51 on the fixing plate 5, allowing the intermediate connecting rod 3c to move only to the upper left of the V-groove 51. The three positions of the intermediate connecting rod 3c in the V-groove 51 are the leftmost end, the bottom of the middle position, and the rightmost end of the V-groove 51, respectively. These correspond to the three position states of normal power supply closed, switch double open, and backup power supply closed, as detailed below. Figure 4 and Figure 7 These are positional diagrams of the contact assembly system 2 and operating system 3 when the switch is in a double-open state. When the intermediate connecting rod 3c is at the bottom of the middle position of the V-groove 51, both the normal power moving contact 21 and the backup power moving contact 22 are open, and the entire switch is in a double-open state. Figure 5 and Figure 8 These are positional diagrams of the contact assembly system 2 and operating system 3 when the main power supply is closed. When the intermediate connecting rod 3c is at the leftmost end of the V-groove 51, the main power supply moving contact 21 is in the closed state, and the standby power supply moving contact 22 is in the open state. Figure 6 and Figure 7 The diagrams show the positional states of the contact assembly system 2 and the operating system 3 when the backup power supply is closed. When the intermediate connecting rod 3c is located at the rightmost end of the V-groove 51, the normal power supply moving contact 21 is in the open state, and the backup power supply moving contact 22 is in the closed state. A damping plate is provided at the rotatable connection between the reversing baffle 6 and the fixed plate 5. The damping plate is sleeved on the rotating shaft, and the friction of the damping plate can keep the reversing baffle 6 in its current position when there is no external driving force.
[0027] The fixed plate 5 is provided with a limiting hole 62; the reversing baffle 6 is equipped with a limiting rod 61, which moves within the limiting hole 62 of the fixed plate 5, and the other end of the limiting rod 61 is connected to the driving device; the driving device is a manual button or an electric button, that is, the reversing baffle 6 can be rotated within the limiting hole 62 by manually moving the reversing baffle 6, or by conventional driving methods such as controlling an electromagnet or coil through a circuit.
[0028] The working principle of this utility model: When the intermediate connecting rod 3c is at the bottom of the middle position of the V-groove 51, both the normal power contact 21 and the backup power contact 22 are in the open state, and energy is stored through the energy storage operating mechanism 3a. The reversing baffle 6 is manually or electrically changed so that it can be turned clockwise or counterclockwise as needed. When the reversing baffle 6 is turned counterclockwise, it blocks the path of the intermediate connecting rod 3c to the right end of the V-groove 51. At this time, the energy storage operating mechanism 3a releases energy to drive the intermediate connecting rod 3c. When moving upwards, the intermediate connecting rod 3c can only move to the left end of the V-groove 51, and drives the connecting rod assembly 2a to close the working power contact 21. Similarly, when the reversing baffle 6 is turned clockwise, the reversing baffle 6 blocks the path of the intermediate connecting rod 3c to the left end of the V-groove 51. At this time, the energy storage operating mechanism 3a releases energy to drive the intermediate connecting rod 3c to move upwards. The intermediate connecting rod 3c can only move to the right end of the V-groove 51, and drives the connecting rod assembly 2b to close the backup power contact 22.
[0029] The scope of protection of this utility model is not limited to the technical solutions disclosed in the specific embodiments. Any modifications, equivalent substitutions, improvements, etc., made to the above embodiments based on the technical essence of this utility model shall fall within the scope of protection of this utility model.
Claims
1. An automatic transfer switch with a single energy storage operating mechanism, comprising a base (1), a contact assembly system (2), an operating system (3), and a protective cover (4); the base (1) is fitted with the protective cover (4) to form a hollow housing; the contact assembly system (2) is mounted on the base (1) inside the hollow housing; the operating system (3) is mounted above the contact assembly system (2); characterized in that: The contact assembly system (2) includes a common power moving contact (21), a backup power moving contact (22), a first connecting rod assembly (2a), and a second connecting rod assembly (2b). One end of the first connecting rod assembly (2a) is connected to the common power moving contact (21) to drive the common power moving contact (21) to move, and the other end is provided with a strip-shaped slot. One end of the second connecting rod assembly (2b) is connected to the backup power moving contact (22) to drive the backup power moving contact (22) to move, and the other end is provided with the same strip-shaped slot as the first connecting rod assembly (2a). The first connecting rod assembly (2a) and the second connecting rod assembly (2b) are installed in an X-shape and do not interfere with each other. The operating system (3) includes an energy storage operating mechanism (3a), an intermediate connecting rod (3c), a fixing plate (5), and a reversing baffle (5). 6) A V-groove (51) is provided on the fixed plate (5); the first connecting rod assembly (2a) and the second connecting rod assembly (2b) are located between the energy storage operating mechanism (3a) and the fixed plate (5); one end of the intermediate connecting rod (3c) is connected to the output end (31a) of the energy storage operating mechanism (3a) through the connecting rod (31c), and the other end passes through the V-groove (51) on the fixed plate (5), the strip slot on the first connecting rod assembly (2a) and the strip slot on the second connecting rod assembly (2b) in sequence, and the intermediate connecting rod (3c) can slide along the V-groove (51) on the fixed plate (5); the reversing baffle (6) is rotatably installed on the fixed plate (5), and by adjusting the installation position of the reversing baffle (6), the movement area of the intermediate connecting rod (3c) on the left or right side of the V-groove (51) can be limited.
2. The automatic transfer switch of a single energy storage operating mechanism according to claim 1, characterized in that: The reversing baffle (6) is irregularly shaped. When the reversing baffle (6) rotates clockwise, it blocks the left entrance of the V-groove (51) on the fixed plate (5), so that the middle connecting rod (3c) can only move to the upper right of the V-groove (51). When the reversing baffle (6) rotates counterclockwise, it blocks the right entrance of the V-groove (51) on the fixed plate (5), so that the middle connecting rod (3c) can only move to the upper left of the V-groove (51).
3. The automatic transfer switch of a single energy storage operating mechanism according to claim 2, characterized in that: A damping plate is provided at the rotatable connection between the reversing baffle (6) and the fixed plate (5). The damping plate is sleeved on the rotating shaft, and the friction of the damping plate can keep the reversing baffle (6) in its current position when there is no external force driving it.
4. The automatic transfer switch of a single energy storage operating mechanism according to claim 1, characterized in that: The fixed plate (5) is provided with a limiting hole (62); the reversing baffle (6) is equipped with a limiting rod (61), the limiting rod (61) moves within the limiting hole (62) preset on the fixed plate (5), and the other end of the limiting rod (61) is connected to the driving device; the driving device is a manual button or an electric button.
5. An automatic transfer switch for a single energy storage operating mechanism according to claim 1, characterized in that: The energy storage operating mechanism (3a) is a spring energy storage mechanism, including an energy storage spring, a ratchet assembly and a release button; one end of the energy storage spring is connected to the base (1), and the other end is linked to the output end (31a) through the ratchet assembly; the release button is installed on the housing of the energy storage operating mechanism (3a), and pressing the release button can trigger the ratchet assembly to unlock, so that the energy storage spring releases elastic potential energy and drives the output end (31a) to move.