Operating mechanism of change-over switch and change-over switch

Abstract

The invention provides an operating mechanism of a change-over switch and the change-over switch, and the operating mechanism comprises a rotating shaft which is provided with a plurality of clamping grooves which are arranged at intervals along the circumferential direction of the rotating shaft; the lock rod assembly comprises a base and a lock rod, and the lock rod has a locking state in which the lock rod is matched with the clamping groove to be locked and an unlocking state in which the lock rod is separated from the clamping groove when the rotating shaft is located at the working position; the rotating disc is rotationally installed on the switch body and drives the rotating shaft to rotate through a first elastic piece, the rotating disc is provided with a plurality of protruding discs arranged at intervals in the circumferential direction of the rotating disc, and the protruding discs are provided with triggering positions for driving the lock rod to be switched from the locking state to the unlocking state; in the process that the rotating disc drives the rotating shaft to be switched between the two adjacent working positions, before the protruding disc moves to the triggering position, the rotating shaft keeps still, and the first elastic piece is in an energy storage state. After the protruding disc moves to the triggering position, the first elastic piece releases energy and drives the rotating shaft to rotate rapidly, so that the conversion speed is increased, electric arcs are easy to break, the contact is not easy to burn out, and the service life of the product is prolonged.

Description

Technical Field

[0001] The present invention relates to the technical field of switches, and in particular to an operating mechanism of a transfer switch and a transfer switch. Background Art

[0002] The dual power transfer switch is used to ensure continuous power supply. When the normal power supply suddenly fails or there is a power outage, the dual power transfer switch can be used to switch to the backup power supply so that the electrical equipment can still operate normally.

[0003] In the existing dual power conversion switches, the moving contacts are limited by the switching speed of the operating mechanism. The switching speed between the common static contact and the spare static contact is not fast enough, and the generated arc is not easy to be broken, which causes the contacts to burn out easily and shortens the service life of the product. Summary of the invention

[0004] Therefore, the technical problem to be solved by the present invention is to overcome the defects of the prior art that the switching operation mechanism of the conversion switch has a slow switching speed, resulting in a short service life of the contacts, thereby providing an operating mechanism of the conversion switch with a fast switching speed and a conversion switch.

[0005] To this end, the present invention provides an operating mechanism of a conversion switch, including a rotating shaft, a locking rod assembly and a rotating disk, wherein the rotating shaft is rotatably mounted on the switch body and is used to drive a moving contact to be connected to or separated from a static contact, the rotating shaft having a plurality of working positions and having a plurality of slots arranged at intervals along its circumference; at least one locking rod assembly, including a base fixed on the switch body and a locking rod moving relative to the base, the locking rod having a locked state in which the rotating shaft is locked in cooperation with the slot when the rotating shaft is in the working position, and an unlocked state in which the locking rod is separated from the slot; a rotating disk, rotatably mounted on the switch body and driving the rotating shaft to rotate through a first elastic member, the rotating disk having a plurality of protruding disks arranged at intervals along its circumference, the protruding disk having a triggering position for driving the locking rod to switch from the locked state to the unlocked state; in the process of the rotating disk driving the rotating shaft to switch between two adjacent working positions, before the protruding disk moves to the triggering position, the rotating shaft remains stationary and the first elastic member is in an energy storage state; after the protruding disk moves to the triggering position, the first elastic member releases energy to drive the rotating shaft to rotate.

[0006] The locking rod assembly further includes a second elastic member, and the second elastic member is used to drive the locking rod to switch from the unlocking state to the locking state.

[0007] The base is formed with an installation cavity and an opening located on one side of the installation cavity. The locking rod includes a locking rod body slidably installed in the installation cavity and a locking rod portion extending from the opening. One end of the second elastic member abuts against the locking rod portion, and the other end abuts against the inner wall of the installation cavity.

[0008] The base is provided with a plurality of hooks, and the switch body is provided with hanging holes adapted to be connected with the hooks.

[0009] The locking rod portion comprises a first portion matched with the locking slot and a second portion matched with the protruding disc.

[0010] A first shaft is fixedly arranged on the rotating shaft, a second shaft is fixedly arranged on the rotating disk, and the first elastic member is a tension spring, and two ends of the tension spring are respectively hooked on the first shaft and the second shaft.

[0011] The switch body is provided with a motor and a motor shaft located at one end of the motor and used for driving the turntable to rotate.

[0012] A slot for inserting the operating handle is formed on the rotating disk.

[0013] The present invention also provides a transfer switch, comprising the operating mechanism of the transfer switch as described above.

[0014] The technical solution of the present invention has the following advantages:

[0015] 1. The operating mechanism of the conversion switch provided by the present invention includes a rotating shaft, a rotating disk and a locking rod assembly. The rotating shaft has a plurality of slots arranged at intervals along its circumference. The locking rod has a locked state in which it is locked with the slots when the rotating shaft is in a working position, and an unlocked state in which it is separated from the slots. The rotating disk drives the rotating shaft to rotate through a first elastic member, and has a plurality of protruding disks arranged at intervals along its circumference. The protruding disk has a trigger position for driving the locking rod to switch from a locked state to an unlocked state. In the process of the turntable driving the rotating shaft to switch between two adjacent working positions, the rotating shaft remains stationary because the slot of the rotating shaft is locked by the locking rod, while the turntable is rotating, and the first elastic member is stretched to store energy; and when the turntable continues to rotate until the raised disk drives the locking rod to switch from the locked state to the unlocked state, the first elastic member releases energy, thereby quickly driving the rotating shaft to rotate, thereby improving the switching speed of the moving contact, making it easy to break the arc, and the contact is not easy to burn out, thereby extending the service life of the product; in addition, by providing a locking rod assembly, the rotating shaft is locked when it is in the working position, so that the position of the moving contact is also locked, thereby avoiding repeated bouncing and difficulty in breaking the arc during the contact between the moving contact and the static contact due to excessive electric repulsion.

[0016] 2. In the operating mechanism of the conversion switch provided by the present invention, when the protruding disk is separated from the locking rod, the second elastic member can drive the locking rod to be pushed out, and when the slot of the rotating shaft is rotated to a corresponding position, the locking rod is snapped into the slot under the elastic force of the second elastic member, thereby locking the rotating shaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 A three-dimensional diagram of the transfer switch operating mechanism of the present invention;

[0019] Figure 2 for Figure 1 Schematic diagram of the explosion structure;

[0020] Figure 3 for Figure 1 A three-dimensional diagram after removing the switch body and the motor;

[0021] Figure 4 It is a structural schematic diagram of the transfer switch operating mechanism (the rotating shaft is in the double open position);

[0022] Figure 5 It is a schematic diagram of the disassembly of the locking component and the rotating shaft;

[0023] Figure 6 A side view of the transfer switch operating mechanism.

[0024] Explanation of the accompanying drawings: 1. switch body; 2. rotating shaft; 3. slot; 4. base; 5. locking rod; 51. first locking rod; 52. second locking rod; 6. rotating disk; 7. first elastic member; 8. raised disk; 9. second elastic member; 10. mounting cavity; 11. locking rod body; 12. locking rod part; 13. hook; 14. hanging hole; 15. first part; 16. second part; 17. first axis; 18. second axis; 19. motor; 20. motor shaft; 21. slot; 22. locking rod assembly. DETAILED DESCRIPTION

[0025] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0027] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] In addition, 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.

[0029] Example

[0030] This embodiment provides a conversion switch, such as Figure 1 and Figure 2 As shown, it includes a switch body 1 and an operating mechanism arranged on the switch body 1, and the operating mechanism includes a rotating shaft 2, a locking rod assembly 22, and a rotating disk 6.

[0031] Switch body 1, such as Figure 2 As shown, it is provided with a motor 19 and a motor shaft 20 located at one end of the motor 19 for driving the turntable 6 to rotate.

[0032] The rotating shaft 2 is rotatably mounted on the switch body 1 and is used to drive the moving contact to move. Figure 5 As shown, the rotating shaft 2 has a plurality of working positions and a plurality of slots 3 arranged at intervals along its circumference.

[0033] The locking rod assembly 22 includes a base 4, a locking rod 5 and a second elastic member 9. The base 4 is fixed to the switch body 1. Figure 3 , Figure 4 and Figure 5 As shown, it is formed with a mounting cavity 10 and an opening located on one side of the mounting cavity 10, and the base 4 is provided with a plurality of hooks 13, as shown in FIG. Figure 2As shown, the switch body 1 is provided with a hanging hole 14 adapted to be connected with the hook 13. The lock rod 5 is movably mounted on the base 4, and has a locked state in which it is locked with the card slot 3 when the rotating shaft 2 is in the working position, and an unlocked state in which it is separated from the card slot 3. Figure 5 As shown, the lock rod 5 includes a lock rod body 11 slidably mounted in the installation cavity 10, and a lock rod portion 12 extending from the opening, and a second elastic member 9 is used to drive the lock rod 5 to switch from the unlocked state to the locked state, one end of which abuts against the lock rod portion 12, and the other end abuts against the inner wall of the installation cavity 10. The lock rod portion 12 has a first portion 15 that cooperates with the card slot 3, and a second portion 16 that cooperates with the protruding plate 8 of the rotating disk 6.

[0034] The rotating disk 6 is rotatably mounted on the switch body 1 and drives the rotating shaft 2 to rotate through the first elastic member 7. Figure 2 As shown, the rotating disk 6 has a plurality of protruding disks 8 arranged at intervals along its circumference, and the protruding disks 8 have a trigger position for driving the lock rod 5 to switch from the locked state to the unlocked state. In the process of the rotating disk 6 driving the rotating shaft 2 to switch between two adjacent working positions, before the protruding disk 8 moves to the trigger position, the rotating shaft 2 remains stationary, and the first elastic member 7 is in an energy storage state; after the protruding disk 8 moves to the trigger position, the first elastic member 7 releases energy to drive the rotating shaft 2 to rotate. Figure 6 As shown, the rotating shaft 2 is fixed with a first shaft 17, the rotating disk 6 is fixed with a second shaft 18, the first elastic member 7 is a tension spring, and the two ends of the tension spring are respectively hooked on the first shaft 17 and the second shaft 18. The rotating disk 6 is formed with a slot 21 for inserting an operating handle, that is, in addition to the motor 19 driving the rotating disk 6 to rotate, the rotating disk 6 can also be driven manually to rotate.

[0035] The transfer switch of this embodiment is a dual power transfer switch. The rotating shaft 2 has three working positions: a common closing position, a double opening position and a standby closing position. Three slots 3 are provided on the outer wall of the rotating shaft 2. Three protruding disks 8 are provided on the rotating disk 6. There are two groups of locking rod assemblies 22. The two groups of locking rod assemblies 22 are symmetrically distributed on both sides of the rotation center of the rotating disk 6. Among them, the lower one is the first locking rod 51, and the upper one is the second locking rod 52.

[0036] The working positions of the dual power transfer switch are as follows:

[0037] In such Figure 4 In the double split position shown, the first locking rod 51 cooperates with and locks one of the slots 3 of the rotating shaft 2 , and the second locking rod 52 abuts against one of the raised disks 8 .

[0038] Switching from the double open position to the commonly used closing position: the turntable 6 rotates counterclockwise under the action of external force. Before the raised disk 8 contacts the first locking rod 51, the rotating shaft 2 remains different due to the locking of the first locking rod 51, and the first elastic member 7 is stretched to store energy; when the raised disk 8 rotates to the position driving the first locking rod 51 to unlock, the first elastic member 7 releases energy, thereby driving the rotating shaft 2 to rotate quickly to the commonly used closing position. In the commonly used closing position, the second locking rod 51 cooperates with one of the slots 3 of the rotating shaft 2 to lock, and the first locking rod 52 resists against one of the raised disks 8.

[0039] It should be noted that the dual power conversion switch may also have only two working positions: a common closing position and a standby closing position, and two slots 3 are provided on the outer wall of the corresponding rotating shaft 2, two raised disks 8 are provided on the rotating disk 6, and the locking rod assembly 22 can be set as a group. In addition, the operating mechanism of the conversion switch of the present application is not only applicable to the dual power conversion switch, but also to the gear switch with multiple gears. For those skilled in the art, the number and position of the slots 3, the raised disks 8 and the locking rod assembly 22 can be set according to the corresponding gear.

[0040] The operating mechanism of the conversion switch provided by the present invention comprises a rotating shaft 2, a rotating disk 6 and a locking rod assembly 22. In the process that the rotating disk 6 drives the rotating shaft 2 to switch between two adjacent working positions, since the slot 3 of the rotating shaft 2 is locked by the locking rod 5, the rotating shaft 2 remains stationary, while the rotating disk 6 is in rotation, and the first elastic member 7 is stretched to store energy; and when the rotating disk 6 continues to rotate until the protruding disk 8 drives the locking rod 5 to switch from the locked state to the unlocked state, the first elastic member 7 releases energy, thereby quickly driving the rotating shaft 2 to rotate, thereby improving the switching speed of the moving contact, making it easy to break the arc, and the contact is not easy to burn out, thereby extending the service life of the product; in addition, by providing the locking rod assembly 22, the rotating shaft 2 is locked when it is in the working position, so that the position of the moving contact is also locked, thereby avoiding repeated bouncing and difficulty in breaking the arc during the contact between the moving contact and the static contact due to excessive electric repulsion.

[0041] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention.

Claims

1. An operating mechanism of a transfer switch, characterized in that: include: A rotating shaft (2) is rotatably mounted on the switch body (1) and is used to drive the moving contact to move. The rotating shaft (2) has a plurality of working positions and a plurality of slots (3) arranged at intervals along its circumference. at least one locking rod assembly (22), comprising a base (4) fixed on the switch body (1), and a locking rod (5) movable relative to the base (4), wherein the locking rod (5) has a locked state in which it cooperates with the card slot (3) to lock when the rotating shaft (2) is in the working position, and an unlocked state in which it is separated from the card slot (3); a rotating disk (6) rotatably mounted on the switch body (1) and driving the rotating shaft (2) to rotate via a first elastic member (7); the rotating disk (6) having a plurality of protruding disks (8) arranged at intervals along its circumference; the protruding disks (8) having a trigger position for driving the lock rod (5) to switch from the locked state to the unlocked state; In the process of the rotating disk (6) driving the rotating shaft (2) to switch between two adjacent working positions, before the raised disk (8) moves to the trigger position, the rotating shaft (2) remains stationary and the first elastic member (7) is in an energy storage state; after the raised disk (8) moves to the trigger position, the first elastic member (7) releases energy to drive the rotating shaft (2) to rotate.

2. The operating mechanism of the transfer switch according to claim 1, characterized in that: The locking rod assembly (22) further comprises a second elastic member (9), wherein the second elastic member (9) is used to drive the locking rod (5) to switch from the unlocking state to the locking state.

3. The operating mechanism of the transfer switch according to claim 2, characterized in that: The base (4) is formed with an installation cavity (10) and an opening located on one side of the installation cavity (10); the locking rod (5) includes a locking rod body (11) slidably installed in the installation cavity (10) and a locking rod portion (12) extending from the opening; one end of the second elastic member (9) abuts against the locking rod portion (12), and the other end abuts against the inner wall of the installation cavity (10).

4. The operating mechanism of the transfer switch according to claim 1, characterized in that: The base (4) is provided with a plurality of hooks (13), and the switch body (1) is provided with hanging holes (14) adapted to be connected with the hooks (13).

5. The operating mechanism of the transfer switch according to claim 3, characterized in that: The locking rod portion (12) comprises a first portion (15) cooperating with the locking groove (3) and a second portion (16) cooperating with the raised disc (8).

6. The operating mechanism of the transfer switch according to claim 1, characterized in that: A first shaft (17) is fixedly arranged on the rotating shaft (2), a second shaft (18) is fixedly arranged on the rotating disk (6), and the first elastic member (7) is a tension spring, the two ends of which are respectively hooked on the first shaft (17) and the second shaft (18).

7. The operating mechanism of the transfer switch according to claim 1, characterized in that: The switch body (1) is provided with a motor (19) and a motor shaft (20) located at one end of the motor (19) and used for driving the rotating disk (6) to rotate.

8. The operating mechanism of the transfer switch according to claim 1, characterized in that: The rotating disk (6) is formed with a slot (21) for inserting an operating handle.

9. A transfer switch, characterized in that: The invention comprises an operating mechanism of a transfer switch as claimed in any one of claims 1 to 8.

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