An indicating mechanism and its dual power automatic transfer switch

Abstract

The application provides an indicating mechanism and a dual-power automatic transfer switch thereof. The indicating mechanism comprises an indicating part rotatably installed on a body and having normal, standby and dual-part indicating positions; and a positioning mechanism adapted to limit the rotating position of the indicating part when the indicating part is switched from the normal / standby indicating position to the dual-part indicating position, so that the dual-part indicating position is accurately positioned and misoperation is avoided, and the safety and reliability are improved.

Description

Technical Field

[0001] This invention relates to the field of dual power supply technology, specifically to an indicator mechanism and its dual power supply automatic transfer switch. Background Technology

[0002] A dual power transfer switch is used to ensure continuous power supply. When the main power supply suddenly fails or is interrupted, the dual power transfer switch can automatically switch to the backup power supply, so that the electrical equipment can still operate normally.

[0003] Dual power transfer switches have three operating states: primary, standby, and dual-disconnect. Dual-disconnect state means that both the primary and standby power supplies are disconnected. Existing dual power transfer switches have indicating mechanisms such as... Figure 5 and 6 As shown, it includes a power output shaft 3 and an indicator 1 mounted on the drive shaft. The indicator 1 has three status indication marks. The indicator 1 rotates in conjunction with the power output shaft 3. The cover 7 has an observation hole 71 opposite to the indicator 1. When the motor 6 drives the power output shaft 3 to rotate, it also drives the indicator 1 to rotate. The operator can intuitively know the working status of the dual power transfer switch through the observation hole 71. In actual work, the inventors found that when the dual power transfer switch switches from the normal / standby state to the dual-open state, the power output shaft 3 will continue to drive the indicator 1 to rotate a certain angle under the action of inertia when the motor 6 is de-energized. This makes the working status indication unclear. That is, the indicator should be in the dual-open indication state, but it may be in the standby or normal indication state. This may lead to operator error and affect equipment and personal safety. Summary of the Invention

[0004] Therefore, the technical problem to be solved by the present invention is to overcome the defect of inaccurate dual-power transfer switch dual-position indication in the prior art, thereby providing an indication mechanism with accurate dual-position indication and high safety and reliability, as well as a dual-power automatic transfer switch having the indication mechanism.

[0005] Therefore, the present invention provides an indicating mechanism, including an indicating element and a positioning mechanism. The indicating element is rotatably mounted on a body and has a common, standby, and dual indicating positions. The positioning mechanism is adapted to limit the rotation position of the indicating element when it switches from the common / standby indicating position to the dual indicating position.

[0006] The indicator is located on the power output shaft of the motor and is linked to the power output shaft. The positioning mechanism can be positioned and connected with the power output shaft.

[0007] The positioning mechanism includes a positioning rod and an electromagnetic drive structure. The positioning rod is mounted on the body and can reciprocate along its own axis via a biasing member. It has an initial position that does not affect the rotation of the indicator and a positioning position that can be positioned in conjunction with the coupling structure of the power output shaft. The electromagnetic drive structure can generate a driving force when the double-separation operation is not performed. The driving force overcomes the force of the biasing member to drive the positioning rod from the positioning position to the initial position. When the double-separation operation is performed, the driving force is removed, and the positioning rod returns to the positioning position from the initial position under the force of the biasing member.

[0008] The connecting structure is a positioning groove recessed from the outer wall of the power output shaft, which can be positioned and connected with the positioning rod.

[0009] The positioning rod has a positioning part adjacent to the power output shaft and adaptable to the positioning groove, and a connecting rod part disposed away from the power output shaft, wherein the size of the positioning part is larger than the size of the connecting rod part.

[0010] The contact surface between the positioning part and the outer wall of the power output shaft is an arc surface.

[0011] The connecting structure consists of two blocks located on the outer wall of the power output shaft, which can cooperate with the positioning rod to block. The two blocks are located on both sides of the positioning rod.

[0012] The electromagnetic drive structure includes a cylinder, a stationary iron core, a moving iron core, a positioning rod, a biasing component, and a coil. The cylinder has a central cavity. The stationary iron core is fixedly installed at one end of the cavity. The moving iron core is movably installed at the other end of the cavity. The positioning rod is fixedly connected to the moving iron core at one end and extends through a hole on one side of the cylinder at the other end. The biasing component abuts against the moving iron core at one end and against the stationary iron core at the other end. The coil is wound around the outer wall of the cylinder. When the dual-splitting operation is not performed, the coil is energized to generate a driving force, driving the positioning rod to move from the positioning position to the initial position. When switching from the normal / standby state to the dual-splitting state, the coil is de-energized, and the driving force is removed.

[0013] The coil and the double-disconnect button that controls the motor to perform the double-disconnect operation are in the same conductive circuit. When the double-disconnect button is not pressed, the conductive circuit is connected; when the double-disconnect operation is performed and the double-disconnect button is pressed, the conductive circuit is disconnected.

[0014] The present invention also provides a dual-power automatic transfer switch, including the indicating mechanism described above.

[0015] The technical solution of this invention has the following advantages:

[0016] 1. The indicating mechanism provided by the present invention includes an indicating element and a positioning mechanism. The positioning mechanism is adapted to limit the rotation position of the indicating element when it switches from a normal / standby indicating position to a dual indicating position, so as to make the dual indicating position accurate and improve safety and reliability.

[0017] 2. The indicating mechanism provided by the present invention has an indicating element disposed on the power output shaft of the motor and linked with the power output shaft. The positioning mechanism can cooperate with the power output shaft for positioning connection. Since the indicating element is only a thin plate, it is not easy to position. However, the positioning mechanism and the power output shaft are used to achieve positioning, thereby realizing the positioning of the indicating element, which is more reliable.

[0018] 3. The indicating mechanism provided by the present invention includes a positioning rod and an electromagnetic drive structure. The electromagnetic drive structure can generate a driving force when the double-separation operation is not performed. The driving force overcomes the force of the biasing component to drive the positioning rod to move from the positioning position to the initial position. When the double-separation operation is performed, the driving force is removed, and the positioning rod is reset from the initial position to the positioning position under the force of the biasing component. The positioning rod and the electromagnetic drive structure have the advantage of simple structure.

[0019] 4. The indicating mechanism provided by the present invention has a positioning groove recessed from the outer wall of the power output shaft. The positioning groove can be positioned and connected with the positioning rod. The positioning rod and the positioning groove that cooperate with each other have the advantages of simple structure and convenient processing.

[0020] 5. The indicating mechanism provided by the present invention has an arc-shaped contact surface between the positioning part and the outer wall of the power output shaft, thereby reducing the friction between the positioning part and the outer wall of the power output shaft and extending the service life.

[0021] 6. The indicating mechanism provided by this invention has the coil and the double-division button for controlling the motor to perform double-division operation in the same conductive circuit. When the double-division button is not pressed, the conductive circuit is connected; when the double-division operation is performed and the double-division button is pressed, the conductive circuit is disconnected. The inventors have ingeniously designed the conductive circuit so that the energized and de-energized states of the coil can be controlled by controlling the double-division button. The structure is simple. Attached Figure Description

[0022] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0023] Figure 1 This is a perspective view of the dual-power automatic transfer switch indicator mechanism of the present invention;

[0024] Figure 2 for Figure 1 Cross-sectional view;

[0025] Figure 3 This is a schematic diagram of the electromagnetic drive structure;

[0026] Figure 4 A schematic diagram of the second embodiment of the power output shaft connection structure;

[0027] Figure 5 A perspective view of a dual-power automatic transfer switch in the prior art;

[0028] Figure 6 for Figure 5 A 3D view after the cover has been removed.

[0029] Explanation of reference numerals in the attached drawings: 1. Indicator; 2. Body; 3. Power output shaft; 31. Positioning groove; 32. Stop block; 4. Positioning rod; 41. Positioning part; 42. Connecting rod part; 43. Contact surface; 5. Electromagnetic drive structure; 51. Cylinder; 52. Inner cavity; 53. Stationary iron core; 54. Moving iron core; 55. Biasing component; 56. Coil; 6. Motor; 7. Cover; 71. Observation hole. Detailed Implementation

[0030] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0031] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for 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 the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0032] In the description of this invention, it should be noted that, unless otherwise explicitly 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 of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0033] Furthermore, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0034] Example

[0035] This embodiment provides a dual-power automatic transfer switch, which includes an indicator mechanism for indicating the operating status, such as... Figure 1 As shown, the indicating mechanism includes an indicating element 1 and a positioning mechanism.

[0036] Indicator 1 is mounted on the power output shaft 3 of motor 6 and is linked to the power output shaft 3. Indicator 1 has three indicating positions: normal, standby, and dual-position. The power output shaft 3 is provided with a connecting structure that can be positioned and connected to the positioning rod 4. In this embodiment, as shown... Figure 2 As shown, the combined structure is a positioning groove 31 recessed from the outer wall of the power output shaft 3, which can be positioned and connected to the positioning rod 4.

[0037] The positioning mechanism is adapted to limit the rotational position of the indicator 1 when it switches from the normal / standby indicator position to the dual indicator position. The positioning mechanism includes a positioning rod 4 and an electromagnetic drive structure 5.

[0038] The positioning rod 4 is mounted on the body 2, reciprocating along its own axis via a biasing member 55. It has an initial position that does not affect the rotation of the indicator 1, and a positioning position that can be positioned in conjunction with the connection structure of the power output shaft 3. The positioning rod 4 has a positioning part 41 adjacent to the power output shaft 3 and adaptable to the positioning groove 31, and a connecting rod part 42 disposed away from the power output shaft 3. The size of the positioning part 41 is larger than the size of the connecting rod part 42, making it less prone to breakage and improving reliability. The contact surface 43 between the positioning part 41 and the outer wall of the power output shaft 3 is an arc surface.

[0039] The electromagnetic drive structure 5 generates a driving force when the double-separation operation is not performed. This driving force overcomes the force of the biasing member 55, driving the positioning rod 4 to move from the positioning position to the initial position. During the double-separation operation, the driving force is removed, and the positioning rod 4 returns to the positioning position from the initial position under the force of the biasing member 55. Figure 3 As shown, the electromagnetic drive structure 5 includes: a cylindrical body 51 with a centrally located inner cavity 52; a stationary iron core 53 fixedly installed at one end of the inner cavity 52; a moving iron core 54 movably installed at the other end of the inner cavity 52; a positioning rod 4, one end of which is fixedly connected to the moving iron core 54, and the other end of which protrudes from a through hole on one side of the cylindrical body 51; a biasing member 55, one end of which abuts against the moving iron core 54, and the other end of which abuts against the stationary iron core 53; and a coil 56 wound around the outer wall of the cylindrical body 51. When the double-division operation is not performed, the coil 56 is energized, generating a driving force to drive the positioning rod 4 from the positioning position to the initial position; when switching from the normal / standby state to the double-division state, it is de-energized, and the driving force is removed. The coil 56 and the double-division button that controls the double-division operation of the motor 6 are in the same conductive circuit, wherein the conductive circuit is connected when the double-division button is not pressed; and the conductive circuit is disconnected when the double-division operation is performed and the double-division button is pressed. In this embodiment, the biasing element 55 is a compression spring.

[0040] As a variable implementation method, such as Figure 4 As shown, the connecting structure consists of two blocks 32 located on the outer wall of the power output shaft 3, which can cooperate with the positioning rod 4 to block. The two blocks 32 are located on both sides of the positioning rod 4.

[0041] As an alternative implementation, the indicator 1 is provided with a positioning groove that can be positioned and connected to the positioning rod 4.

[0042] The working principle of the indicating mechanism of the present invention is as follows:

[0043] When the double-separation operation is not performed, the coil 56 is energized, generating a driving force that drives the moving iron core 54 to move, thereby causing the positioning rod 4 to move away from the power output shaft 3 and separate from the power output shaft 3.

[0044] When performing the double split operation, pressing the double split button de-energizes the coil 56, and the moving iron core 54 is reset under the action of the biasing component 55. The positioning part 41 of the positioning rod 4 abuts against the outer wall of the power output shaft 3. The motor 6 starts after the double split button is pressed, thereby driving the power output shaft to rotate until its positioning groove 31 is positioned and connected with the positioning part 41.

[0045] The indicating mechanism provided by the present invention includes an indicating element 1 and a positioning mechanism. The positioning mechanism is adapted to limit the rotation position of the indicating element 1 when it switches from a normal / standby indicating position to a dual indicating position, so as to make the dual indicating position accurate and improve safety and reliability.

[0046] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.

Claims

1. An indicating mechanism, characterized in that, include: An indicator (1) is rotatably mounted on the body (2) and has a common, spare and dual indication position; The positioning mechanism is adapted to limit the rotational position of the indicator (1) when it switches from the normal / standby indicator position to the dual indicator position; The indicator (1) is located on the power output shaft (3) of the motor (6) and is linked with the power output shaft (3). The positioning mechanism can be positioned and connected with the power output shaft (3). The positioning mechanism includes: The positioning rod (4) is mounted on the body (2) in a reciprocating manner along its own axis by means of the biasing member (55). It has an initial position that does not affect the rotation of the indicator (1) and a positioning position that can be positioned in conjunction with the coupling structure of the power output shaft (3). The electromagnetic drive structure (5) can generate a driving force when the double-separation operation is not performed. The driving force overcomes the force of the biasing member (55) to drive the positioning rod (4) to move from the positioning position to the initial position. When the double-separation operation is performed, the driving force is removed and the positioning rod (4) is reset from the initial position to the positioning position under the force of the biasing member (55). The electromagnetic drive structure (5) includes a coil (56), which is in the same conductive circuit as the double-division button that controls the motor (6) to perform the double-division operation. When the double-division button is not pressed, the conductive circuit is connected; when the double-division operation is performed and the double-division button is pressed, the conductive circuit is disconnected. The electromagnetic drive structure (5) also includes: The cylindrical body (51) has a centrally located inner cavity (52); A stationary iron core (53) is fixedly installed at one end of the inner cavity (52); A movable iron core (54) is movably installed at the other end of the inner cavity (52); The positioning rod (4) is fixedly connected at one end to the moving iron core (54), and the other end passes through the through hole on one side of the cylinder (51); The biasing component (55) abuts against the moving iron core (54) at one end and against the stationary iron core (53) at the other end; the biasing component (55) is a compression spring; The coil (56) is wound around the outer wall of the cylinder (51). When the double-splitting operation is not performed, the coil (56) is energized and generates driving force to drive the positioning rod (4) to move from the positioning position to the initial position. When the normal / standby state is switched to the double-splitting state, the coil (56) is de-energized and the driving force is removed.

2. The indicating mechanism according to claim 1, characterized in that, The connecting structure is a positioning groove (31) recessed from the outer wall of the power output shaft (3), which can be positioned and connected with the positioning rod (4).

3. The indicating mechanism according to claim 2, characterized in that, The positioning rod (4) has a positioning part (41) adjacent to the power output shaft (3) and adapted to be connected to the positioning groove (31), and a connecting rod part (42) disposed away from the power output shaft (3). The size of the positioning part (41) is larger than the size of the connecting rod part (42).

4. The indicating mechanism according to claim 3, characterized in that, The contact surface (43) between the positioning part (41) and the outer wall of the power output shaft (3) is an arc surface.

5. The indicating mechanism according to claim 1, characterized in that, The connecting structure consists of two blocks (32) located on the outer wall of the power output shaft (3) and capable of cooperating with the positioning rod (4) to block it. The two blocks (32) are located on both sides of the positioning rod (4).

6. A dual-power automatic transfer switch, characterized in that, Includes the indicating mechanism as described in any one of claims 1-5.

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