A kind of isolator that different on-off is realized in the same position by forward / reverse rotation

Abstract

A kind of isolating switch that different on-off is realized in the same position by forward / reverse rotation, handle drives lock piece mechanism movement, with first, second direction rotation path.First switch unit: first shell is equipped with contact assembly (movable contact, static contact and drive assembly) symmetrically, first isolating piece can rotate, and its circumferential distribution first, second lug;First lug surface has first limit block, and shell inner wall has second limit block.Second switch unit structure is same with first unit, and the circumferential distribution third, fourth lug of second isolating piece, and first lug and third lug, second lug and fourth lug are symmetrically arranged.Lock piece mechanism: third shell has transmission shaft in it, and it is linked with handle and second isolating piece.Coupling assembly is arranged between second isolating piece and transmission shaft.When moving along first direction and moving along second direction, the length of two paths of handle, rotation shaft is consistent, and the length of two paths of isolating piece is different, presents two kinds of on-off.

Description

Technical Field

[0001] This invention relates to the field of low-voltage electrical technology, specifically to an isolating switch that can be rotated clockwise or counterclockwise to the same position to achieve different on / off states. Background Technology

[0002] Disconnecting switches, especially rotary disconnecting switches, are widely used in power distribution circuits and motor control circuits. They typically consist of a handle, a locking mechanism, and multiple sets of switch assemblies stacked along the height. In use, the operator turns the handle, which drives the driving components (such as isolators) inside each layer of switch assemblies to rotate through the locking mechanism. This, in turn, causes the moving contact to close or open with the stationary contact, thereby switching the circuit position.

[0003] In conventional rotary disconnect switches, the handle typically has two rotation directions: clockwise and counterclockwise. When the operator rotates the handle 90° clockwise or counterclockwise, the timing of the internal contact assembly differs due to the different rotation directions, thus enabling two different switching states (e.g., 90° clockwise for connection, 90° counterclockwise for disconnection, or 90° clockwise and 90° counterclockwise for switching between different circuits). This, to a certain extent, meets the basic bidirectional control requirements.

[0004] However, when the operator continues to rotate the handle to 180°, the existing disconnecting switch exhibits significant functional limitations. Specifically, regardless of whether the handle is rotated 180° clockwise or counterclockwise, the final on / off state of the moving and stationary contacts tends to be consistent because the driving components of each internal switching unit rotate synchronously with the transmission shaft at the same angle. In other words, within the same set of switching units, the circuit state presented by rotating 180° clockwise and 180° counterclockwise is exactly the same, and no difference in switch position can be generated.

[0005] In practical applications, circuit control logic often needs to achieve different output levels through a large 180° bidirectional rotation (e.g., 180° clockwise rotation connects the entire circuit, while 180° counterclockwise rotation connects a portion of the load or isolates a fault). To overcome the aforementioned deficiency of "consistent state in both forward and reverse 180° rotations," existing solutions in this field involve using two independent disconnect switches in an external combination, using the on / off states of the two switches to construct the required bidirectional differentiated logic. However, this approach has several drawbacks: firstly, the two independent switches require twice the installation space, hindering the miniaturization and high-density integration of power distribution equipment; secondly, external wiring is complex, significantly increasing costs, and the reliability and synchronization of the linkage between the two switches are difficult to guarantee, easily leading to misoperation or safety hazards.

[0006] To address the aforementioned issues, how to achieve effective output at two different levels—forward 180° and reverse 180°—by improving the internal structure of a single disconnector without increasing the number of independent disconnectors has become a pressing technical challenge in this field. Summary of the Invention

[0007] In view of the shortcomings of the existing technology, the purpose of this invention is to provide an isolating switch that can be rotated clockwise / counterclockwise to the same position to achieve different on / off states.

[0008] To achieve the above objectives, the present invention provides the following technical solution: A disconnecting switch that can achieve different on / off states by rotating clockwise / counterclockwise to the same position includes a handle, a locking mechanism, a first switch unit, and a second switch unit. The handle can drive the locking mechanism to move so that each switch unit can be activated. The handle has a first rotation path and a second rotation path. The first switching unit includes: A first housing has symmetrically arranged contact assemblies inside, the contact assemblies including a moving contact, a stationary contact, and a driving assembly for driving the moving contact to contact or disconnect from the stationary contact; The first isolator is rotatably disposed within the first housing and has a first protrusion and a second protrusion distributed circumferentially for driving the drive assembly within the corresponding housing to move. The second switching unit includes: The second housing has symmetrically arranged contact assemblies inside, the contact assemblies including a moving contact, a stationary contact, and a driving assembly for driving the moving contact to contact or disconnect from the stationary contact; The second isolator is rotatably disposed within the second housing and has a third protrusion and a fourth protrusion distributed circumferentially thereon for driving the drive assembly within the corresponding housing to move. The locking mechanism includes: Third shell; The drive shaft is rotatably disposed within the third housing and is linked to the handle and the second isolator, or linked to the handle and the first isolator. The first protrusion surface is provided with a first limiting block, and the inner wall of the first housing is provided with a second limiting block that forms a limiting engagement with the first limiting block; A clutch assembly is provided between the first isolation member and the second isolation member, or between the second isolation member and the drive shaft; In the first and second isolation members, the first protrusion and the third protrusion are symmetrically arranged, and the second protrusion and the fourth protrusion are symmetrically arranged. When the handle rotates 180° along the first direction rotation path, the first limiting block and the second limiting block form a limiting engagement on the rotation path to restrict the first isolating member from continuing to move. The handle continues to move through the clutch assembly, so that the isolating switch is in the first switch state. When the handle rotates 180° along the second direction rotation path, the first limiting block does not form a limiting engagement with the second limiting block, and the handle drives the first isolating member to continue moving, so that the isolating switch is in the second switch state.

[0009] The arc length of the first protrusion is greater than that of the second protrusion, and the arc length of the third protrusion is greater than that of the fourth protrusion.

[0010] The first protrusion has an arc length of 90°, and / or the third protrusion has an arc length of 90°.

[0011] The drive components located on the same side in the first and second switching units are arranged in layers in the height direction.

[0012] The first protrusion and the second protrusion are staggered and layered in the height direction, and / or the third protrusion and the fourth protrusion are staggered and layered in the height direction.

[0013] The surface of the third protrusion is provided with a third limiting block, the second housing is provided with a fourth limiting block, and the third limiting block is provided with a groove through which the fourth limiting block can pass.

[0014] The first isolation member and / or the second isolation member are provided with a rotating shaft at their upper ends. The bottom of the second isolation member and / or the transmission shaft is provided with a limiting groove adapted to the rotating shaft. The outer periphery of the rotating shaft is provided with a plurality of limiting ribs. The inner wall of the limiting groove is provided with a plurality of clutch grooves that allow the limiting ribs to rotate.

[0015] The drive shaft has a positioning groove on its outer periphery, and the third housing has symmetrically arranged positioning components, which are adapted to the positioning groove.

[0016] The handle is equipped with a locking component.

[0017] The locking assembly includes a locking groove / hole on the surface of the third housing and a locking element that can form a limiting engagement with the locking groove / hole.

[0018] The beneficial effects of this invention are as follows: By setting a first limiting block on the first isolator and a second limiting block that cooperates with it on the inner wall of the first housing, combined with the clutch assembly between the first isolator and the second isolator (or drive shaft), when the handle is rotated in the first direction to a set angle (e.g., rotated to 145°), the first limiting block and the second limiting block form a limiting engagement, thereby restricting the first isolator from continuing to rotate. After this, that is, during the entire remaining stroke from the set angle to 180°, the handle continues to drive the second isolator (or drive shaft) to rotate through the clutch assembly, while the first isolator remains stationary. When the handle is rotated 180° in the second direction, since the first limiting block and the second limiting block do not form a limiting engagement on the movement path, the first and second isolators always rotate synchronously.

[0019] Inside a single disconnector switch, when moving along the first direction and along the second direction, the two path lengths of the handle and the shaft are the same, while the two path lengths of the isolator are different, presenting two on / off states. This eliminates the need for two independent disconnectors to be combined as in existing technologies, saving nearly 50% of installation space and significantly reducing system costs and failure rates. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of the present invention.

[0021] Figure 2 This is a cross-sectional schematic diagram of the present invention.

[0022] Figure 3 This is a cross-sectional schematic diagram of the second switching unit of the present invention.

[0023] Figure 4 This is a cross-sectional schematic diagram of the operating unit of the present invention.

[0024] Figure 5 This is a schematic diagram of the structure of the two separators of the present invention.

[0025] Figure 6 This is a front view of the two separators of the present invention.

[0026] Figure 7 This is a schematic diagram of the structure of the first or second housing of the present invention.

[0027] Figure 8 This is a schematic diagram of the handle of the present invention.

[0028] Figure 9 This is a schematic diagram showing the internal on / off state of the first and second unit components when the handle is reversed 180° in this invention.

[0029] Figure 10This is a schematic diagram showing the internal on / off state of the first and second unit components when the handle is rotated 180° clockwise in this invention. Detailed Implementation

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

[0031] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain a specific posture (as shown in the figure).

[0032] In the description of this invention, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Furthermore, the terms "clockwise" and "counterclockwise" are based on the orientation or positional relationship shown in the accompanying drawings and are used only for the convenience of describing the invention 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 limiting the invention.

[0033] like Figure 1 and Figure 2 As shown, this invention provides a disconnecting switch that can achieve different on / off states by rotating clockwise and counterclockwise to the same position. It mainly includes a handle 400, a locking mechanism 300, a first switching unit 100, and a second switching unit 200. The handle 400 serves as an external operation input terminal, used to receive the operator's rotational driving force. The handle 400 has a first rotation path (e.g., a clockwise rotation path) and a second rotation path (e.g., a counterclockwise rotation path). By changing the rotation direction, different positions of the disconnecting switch can be switched accordingly.

[0034] The first switching unit 100 includes a first housing 110 and a contact assembly and a first isolator 120 housed therein.

[0035] The first housing 110 has two sets of contact assemblies symmetrically arranged inside. Each set of contact assemblies includes a moving contact 700, a stationary contact 600, and a driving component 500 for driving the moving contact 700 to contact or disconnect from the stationary contact 600. In this embodiment, the driving component 500 is preferably a combination of a sliding push plate and a return spring, which can drive the moving contact 700 to swing or translate relative to the stationary contact 600 when pushed by an external force, thereby realizing the connection and disconnection of the circuit.

[0036] like Figure 3 and Figure 4 As shown, the first isolator 120 is rotatably disposed within the first housing 110. Specifically, the first isolator 120 is mounted in the internal cavity of the first housing 110 via its central pivot. The first isolator 120 has a first protrusion 121 and a second protrusion 122 distributed circumferentially thereon. The first protrusion 121 and the second protrusion 122 are respectively used to abut against the corresponding drive assembly 500 to drive the drive assembly 500 to operate. When the first isolator 120 rotates, the first protrusion 121 and the second protrusion 122 rotate synchronously with it, and sequentially or selectively push the drive assemblies 500 on both sides, thereby controlling the on / off state of the two sets of contact assemblies.

[0037] like Figure 5 and Figure 7 As shown, further, the surface of the first protrusion 121 is provided with a first limiting block 123, which is preferably a stop protrusion protruding outward from the outer surface of the first protrusion 121. Correspondingly, the inner wall of the first housing 110 is provided with a second limiting block 111, which is a limiting rib or limiting post extending inward from the inner wall of the housing. The first limiting block 123 and the second limiting block 111 form a limiting engagement at a specific rotation angle to limit the extreme rotation angle of the first isolation member 120.

[0038] The second switching unit 200 includes a second housing 210 and a contact assembly and a second isolator 220 housed therein.

[0039] The second housing 210 also has two sets of contact assemblies symmetrically arranged inside, and its structure is exactly the same as that of the contact assembly in the first switch unit 100, namely, including a moving contact 700, a stationary contact 600 and a drive assembly 500, which will not be described in detail here.

[0040] like Figure 5 As shown, the second isolator 220 is rotatably disposed within the second housing 210, and has a third protrusion 221 and a fourth protrusion 222 distributed circumferentially thereon. Similarly, the third protrusion 221 and the fourth protrusion 222 are used to drive the drive assembly 500 on the corresponding side within the second housing 210 to actuate.

[0041] It should be noted that in the initial assembly state (i.e., when the disconnecting switch is in the zero or initial position), there is a specific phase relationship between the first isolating member 120 and the second isolating member 220. Specifically, the first protrusion 121 and the third protrusion 221 are symmetrically arranged in the circumferential direction, see [reference needed]. Figure 6The second protrusion 122 and the fourth protrusion 222 are symmetrically arranged in the circumferential direction. This symmetrical arrangement ensures that the first switch unit 100 and the second switch unit 200 can achieve synchronous or differential action under the drive of the handle 400, thereby cooperating to realize different gear logic.

[0042] The locking mechanism 300 is disposed on the upper end of the first switch unit 100 and the second switch unit 200, and is used to transmit the driving force of the handle 400. The locking mechanism 300 includes a third housing 310 and a transmission shaft 320.

[0043] The third housing 310 is fixedly connected to the first housing 110 or the second housing 210. The drive shaft 320 is rotatably disposed within the third housing 310. In this embodiment, one end of the drive shaft 320 is fixedly connected to the handle 400 or linked through a keyway to receive the rotational torque of the handle 400.

[0044] The drive shaft 320 is linked to both the handle 400 and the second isolator 220. In this embodiment, preferably, one end of the drive shaft 320 passes through the third housing 310 and extends into the second housing 210, connecting to the central shaft hole of the second isolator 220. This allows the drive shaft 320 to directly drive the second isolator 220 to rotate synchronously. The second isolator 220 is directly and fixedly connected to the first isolator 120, meaning the first isolator rotates synchronously directly through the second isolator. Simultaneously, a clutch assembly is provided between the second isolator 220 and the drive shaft 320. This clutch assembly is used to cut off or restrict power transmission between the second isolator 220 and the drive shaft 320 under specific operating conditions.

[0045] Of course, in other embodiments not shown, the clutch assembly may also be disposed between the first isolation member and the second isolation member 220, or both may be disposed therein. The working principle is similar to that described above, and both fall within the protection scope of this invention.

[0046] The disconnect switch of this invention achieves two different switching states by rotating the handle 400 180° in different directions, in conjunction with the limiting action of the first limiting block 123 and the second limiting block 111, and the power switching action of the clutch assembly. The specific operation process is as follows: (a) Implementation of the first switch state (handle rotates along the first direction rotation path): When the operator rotates the handle 400 along the first direction rotation path (e.g., clockwise), the handle 400 drives the transmission shaft 320 to rotate clockwise synchronously. The transmission shaft 320 directly drives the second isolator 220 to rotate clockwise on one hand, and drives the first isolator 120 to rotate clockwise on the other hand through the second isolator.

[0047] During this rotation, the first protrusion 121 and the second protrusion 122 on the first isolator 120 gradually push the drive assembly 500 inside the first housing 110, thereby controlling the corresponding moving contact 700 to contact or disconnect from the stationary contact 600; at the same time, the third protrusion 221 and the fourth protrusion 222 on the second isolator 220 also push the drive assembly 500 inside the second housing 210 to move.

[0048] When the handle 400 rotates 145° along the first direction rotation path, the first limiting block 123 rotates with the first isolating member 120 to abut against the second limiting block 111 on the inner wall of the first housing 110. At this time, the first limiting block 123 and the second limiting block 111 form a rigid limiting engagement on the rotation path, thereby restricting the first isolating member 120 from continuing to move in the clockwise direction.

[0049] Since the first isolator 120 is locked and cannot continue to rotate, if the operator continues to apply force to rotate the handle 400, the second isolator 220 is also limited. At this time, the clutch assembly between the second isolator 220 and the drive shaft 320 starts to operate, allowing the handle to continue rotating in the first direction, while the first isolator 120 and the second isolator 220 remain stationary at their current angles. Finally, the handle rotates to the 180° position.

[0050] When the handle 400 is rotated to the end position (e.g., 180°), the isolating switch completes the setting of the first switching state. In this state, the contact assemblies of the first switching unit 100 and the second switching unit 200 are in a specific on / off combination mode (e.g., the first switching unit 100 is on, the second switching unit 200 is off, or both are in a specific on state), realizing the first gear function.

[0051] (ii) Realization of the second switch state (handle rotates along the second direction rotation path): When the operator rotates the handle 400 along the second direction rotation path (e.g., counterclockwise), the handle 400 drives the transmission shaft 320 to rotate counterclockwise, directly driving the second isolator 220 to rotate counterclockwise synchronously, and at the same time driving the first isolator 120 to rotate counterclockwise through the second isolator.

[0052] During this rotation, since the counterclockwise rotation direction of the first isolating member 120 is opposite to the first direction (clockwise), the first limiting block 123 will not contact or interfere with the second limiting block 111 on the counterclockwise rotation path. In other words, throughout the entire counterclockwise 180° rotation stroke of the first isolating member 120, the first limiting block 123 always maintains a distance from the second limiting block 111, and the two do not form a limiting engagement.

[0053] Therefore, when the handle 400 rotates to 180° along the second rotation path, the handle 400 drives the first isolator 120 and the second isolator 220 to rotate synchronously by 180° via the transmission shaft 320. During this process, the clutch assembly remains engaged.

[0054] At this time, the first protrusion 121 and the second protrusion 122 on the first isolator 120 and the third protrusion 221 and the fourth protrusion 222 on the second isolator 220 respectively push the drive assembly 500 in their respective housings, so that the moving contact 700 and the stationary contact 600 are in a completely different on / off combination mode from the first switch state (for example, the first switch unit 100 is off, the second switch unit 200 is on, or both are off), thereby realizing the second switch state of the isolator switch, that is, the second position function.

[0055] Reference Figure 9 and Figure 10 As shown, in this embodiment, the disconnect switch achieves two completely different switch positions by rotating the handle 400 180° in the first direction (clockwise) and the second direction (counterclockwise).

[0056] To further optimize the timing control and spatial layout of the disconnecting switch during operation, this embodiment specifically limits the size and spatial position of the protrusions on the first disconnecting member 120 and the second disconnecting member 220.

[0057] The arc length of the first protrusion 121 is greater than the arc length of the second protrusion 122, and the arc length of the third protrusion 221 is greater than the arc length of the fourth protrusion 222. In this embodiment, the arc lengths of the first protrusion 121 and the third protrusion 221 are preferably set to 90° (i.e., a quarter of a circle), while the arc lengths of the second protrusion 122 and the fourth protrusion 222 are correspondingly set to less than 45° (e.g., 15° or 30°).

[0058] By setting the aforementioned arc length difference, when the first isolator 120 or the second isolator 220 rotates, the first protrusion 121 and the third protrusion 221 with larger arc lengths can maintain a continuous abutting and pushing effect on the corresponding drive component 500 within a wider rotation angle range, while the second protrusion 122 and the fourth protrusion 222 with smaller arc lengths only trigger the drive component 500 within a specific shorter angle range. This coordination method of "long protrusions acting continuously and short protrusions triggering instantaneously" allows the switching timing of the two sets of contact components within the same housing to differ in sequence and duration when the disconnecting switch switches between different positions, thereby achieving more precise electrical logic control and effectively avoiding the risk of instantaneous arcing or short circuits that may be caused by the simultaneous switching of the two sets of contacts.

[0059] The drive components 500 located on the same side (e.g., left or right) in the first switch unit 100 and the second switch unit 200 are arranged in layers in the height direction. Correspondingly, the first protrusion 121 and the second protrusion 122 are arranged in staggered layers in the height direction, and the third protrusion 221 and the fourth protrusion 222 are also arranged in staggered layers in the height direction.

[0060] On the same vertical height level, the first protrusion 121 and the third protrusion 221 are in the same layer, that is, the first protrusion 121 and the third protrusion 221 are both used to push the first side drive component 500 located in the corresponding switch unit in that layer; while the second protrusion 122 and the fourth protrusion 222 are in another horizontal layer (higher or lower than the first layer), used to push the second side drive component 500 located in the corresponding switch unit in that layer.

[0061] To facilitate clear explanation, the drive components 500 on both sides inside the first housing 110 and the second housing 210 are first uniformly calibrated: Two drive components 500 in the first switch unit 100 and the second switch unit 200 that are located on the same side (e.g., the left side) and at the same height are defined as group A drive components; In the first switch unit 100 and the second switch unit 200, the two drive components 500 located on the other side (e.g., the right side) but at different height layers are respectively defined as the upper group drive component B (located in the upper layer) and the lower group drive component B (located in the lower layer).

[0062] The protrusions on the first isolation member 120 and the second isolation member 220 are not simply in a one-to-one correspondence, but are matched hierarchically according to functional requirements, as follows: The first protrusion 121 and the third protrusion 221 (long arc long protrusion): both are arranged on the same layer in the height direction and can both contact the A group of driving components. However, their driving capabilities are fundamentally different: The first protrusion 121 (located on the first isolator 120) has sufficient axial thickness, so during rotation it can not only trigger the A group drive assembly in the same layer, but also trigger the B upper group drive assembly across layers (for example, its lower edge extends to the height of the B upper group). The third protrusion 221 (located on the second isolator 220) is configured to only cooperate with the A group drive components in the same layer and does not have the ability to drive the lower B group across layers.

[0063] The second protrusion 122 and the fourth protrusion 222 (short arc long protrusion): Both are arranged on the same layer in the height direction and can contact the lower B group drive assembly. Their driving capabilities also differ. The second protrusion 122 (located on the first isolator 120) is configured to contact the drive components on both sides respectively, that is, during rotation, it can act on the drive components of the same layer B, and can also act on the drive components (e.g., group A) on the other side across layers at a specific angle. The fourth protrusion 222 (located on the second isolator 220) is configured to cooperate with the B lower group drive assembly in the same layer, and can also act across layers to the drive assembly on the other side (e.g., group A) at a specific angle.

[0064] Under both clockwise and counterclockwise rotation conditions, this invention can reliably enable the drive components inside the first switch unit 100 and the second switch unit 200 to generate two completely different trigger combinations, thereby accurately achieving the invention objective of "clockwise / counterclockwise rotation to achieve different gears". Moreover, the structure is highly integrated and the logic is clear and explicit.

[0065] The second switch unit 200 also has an independent limiting structure to cooperate with the first limiting block 123 and the second limiting block 111 in the first switch unit 100, thereby further improving the reliability and safety of gear switching.

[0066] The surface of the third protrusion 221 is provided with a third limiting block (which can be understood by referring to the structure of the first limiting block 123, and is not separately marked in the figure), while the inner wall of the second housing 210 is provided with a fourth limiting block corresponding to the third limiting block (which can be understood by referring to the structure of the second limiting block 111). In some specific cases, a groove 224 penetrating through its thickness direction is provided on the third limiting block.

[0067] It should be noted that, in order to reduce the types of parts and lower mold development costs, the first housing 110 and the second housing 210 adopt a highly interchangeable design in terms of structure, that is, they are manufactured using the same mold. Therefore, the inner wall of the second housing 210 naturally forms a fourth limiting block with the same structure as the inner wall of the first housing 110.

[0068] However, in the overall motion logic of the present invention, the second isolator 220 does not need to be constrained by the fourth limit block under certain rotation conditions. If the fourth limit block and the third limit block make hard contact, it will hinder the normal movement of the second isolator 220, causing the isolator switch to fail to complete the preset gear switching.

[0069] To resolve this contradiction and avoid the need for a new, expensive mold for the second housing 210, the present invention provides a groove 224 extending through the thickness of the third limiting block. The position, width, and depth of the groove 224 are adapted to the contour of the fourth limiting block.

[0070] When the second isolator 220 rotates within the second housing 210 to an angle that would otherwise cause interference, the fourth limiting block can pass through the groove 224 without contact. In other words, by creating the groove 224, the fourth limiting block directly "avoids" physical contact with the third limiting block, so that the original limiting structure at that location does not play a limiting role during movement, thereby completely releasing the locking restriction on the direction of rotation.

[0071] The upper end of the first isolation member 120 and / or the second isolation member 220 is provided with a rotating shaft extending upward in the axial direction. Correspondingly, the bottom of the second isolation member 220 and / or the drive shaft 320 is provided with a limiting groove adapted to the rotating shaft. Taking the engagement and disengagement between the drive shaft 320 and the second isolation member 220 as an example, the upper rotating shaft of the second isolation member 220 extends into the limiting groove at the bottom of the drive shaft 320.

[0072] To achieve controllable torque transmission and separation, a number of radially protruding limiting ribs 223 are evenly distributed on the outer peripheral wall of the shaft (for example, four limiting ribs are arranged at 90° intervals along the circumference). Correspondingly, a number of clutch grooves 321 are provided on the inner wall of the limiting groove, allowing the limiting ribs 223 to engage or disengage. Under normal operating conditions, the limiting ribs 223 are embedded in the clutch grooves 321, causing the shaft and the limiting groove to overlap in the circumferential direction. The torque of the drive shaft 320 is transmitted to the second isolator 220 through the squeezing action of the limiting ribs 223 and the sidewall of the clutch groove 321, thereby driving it to rotate synchronously.

[0073] When the first isolating member 120 cannot continue to rotate due to the abutment of the first limiting block 123 and the second limiting block 111, the drive shaft 320 still has a tendency to rotate. At this time, the side of the limiting rib 223 is subjected to a reaction force exceeding the preset value in the limiting groove, forcing the limiting rib 223 to rotate in the clutch groove and idle. At this time, the drive shaft 320 can rotate freely relative to the first isolating member 120 and / or the second isolating member, and the power transmission between them is cut off, thereby reliably realizing the predetermined function of "the handle continues to move through the clutch assembly, while the first isolating member stops moving".

[0074] In order to provide the operator with a clear feel for gear shifting and to ensure that the drive shaft 320 can maintain a stable posture after rotating to the position, this embodiment also provides a positioning mechanism in the locking and splitting mechanism 300.

[0075] Specifically, such as Figure 4 As shown, the outer peripheral wall of the drive shaft 320 is provided with an inwardly recessed positioning groove 322. The positioning groove 322 is preferably an arc-shaped recess or a V-shaped annular groove, and its number and position correspond to the number of positions of the disconnect switch (for example, one is provided at each of the 0°, 90° and 180° positions in the circumferential direction).

[0076] Meanwhile, positioning components 700 are symmetrically provided on the inner wall of the third housing 310. In this embodiment, the positioning component 700 is preferably a spring ball assembly, which includes a spring sleeve fixed to the inner wall of the housing, a compression spring placed inside the sleeve, and a ball (steel ball) abutting against the end of the spring. Under the elastic force of the spring, the ball always tends to move closer to the outer peripheral wall of the drive shaft 320. When the drive shaft 320 rotates to a predetermined angle, the ball falls exactly into the positioning groove 322, and the two form a suitable limiting fit, producing a "click" tactile sensation, indicating to the operator that it has been rotated to the correct position; at the same time, relying on the engagement resistance between the ball and the positioning groove 322, the drive shaft 320 can be prevented from freely deflecting due to vibration or other factors when no external force is applied.

[0077] To further prevent unauthorized personnel from misoperating or accidentally bumping the handle 400, which could cause the isolating switch to malfunction, the handle 400 in this embodiment is also equipped with a dedicated locking component.

[0078] like Figure 8 As shown, the locking assembly includes a locking groove 420 (or locking hole) and a locking member 410. In this embodiment, the locking groove 420 is provided on the surface of the third housing 310, specifically as a limiting groove or through hole recessed inward from the outer surface of the housing. Correspondingly, the locking member 410 is preferably an independently operable padlock shank, a pin, or a dedicated locking screw.

[0079] In practical applications, when the handle 400 is rotated to the first or second switch position, the operator can align the operating hole on the handle 400 with the locking groove 420 on the surface of the third housing 310. Then, the locking member 410 is passed through the operating hole on the handle 400 and inserted into or through the locking groove 420, creating a limiting engagement between the locking member 410 and the locking groove 420. At this time, the handle 400 is constrained by the locking member 410 and cannot rotate in any direction relative to the third housing 310, thus firmly locking the disconnect switch in the current position. Only after authorized personnel remove the locking member 410 can the handle 400 resume free rotation, greatly improving the safety and management convenience of the equipment during inspection, maintenance, or specific operating environments.

[0080] In this embodiment, the locking member 410 is not an independent external part, but is slidably disposed inside the handle 400. Specifically, the handle 400 has a guide cavity extending in the radial direction (i.e., perpendicular to the rotation axis of the drive shaft 320). The locking member 410 is columnar or plate-shaped and slides within the guide cavity, thereby having a path for reciprocating movement in the direction perpendicular to the rotation axis.

[0081] The locking member 410 has a locking protrusion at one end near the third housing 310, the shape of which is adapted to the locking groove 420. When the operator needs to lock the handle 400, he only needs to push the locking member 410 in the radial direction, so that it slides along the guide cavity towards the third housing 310. When the handle 400 is rotated to a predetermined position (e.g., the first switch state or the second switch state) and the moving direction of the locking member on the handle 400 is aligned with the locking groove 420, pushing the locking member 410 will insert the locking protrusion at its front end into the locking groove 420.

[0082] At this time, since the locking protrusion of the locking member 410 is fitted into the fixing locking groove 420 on the third housing 310, and the main body of the locking member 410 is located inside the handle 400 and forms an integral part with the handle 400, when the handle 400 is subjected to an external rotational torque, a circumferential rotational limiting fit is formed between the locking member 410 and the locking groove 420. In other words, the side wall of the locking member 410 and the inner wall of the locking groove 420 abut against each other in the circumferential direction, thereby locking the rotational freedom of the handle 400 relative to the third housing 310, preventing the handle 400 from continuing to rotate in the clockwise or counterclockwise direction, and reliably locking the disconnect switch in the current position.

[0083] When it is necessary to unlock the handle 400 to switch gears, the operator only needs to pull the locking piece 410 in the opposite direction, so that it slides outward along the guide cavity, causing the locking protrusion to exit from the locking groove 420, thereby releasing the circumferential limiting fit and allowing the handle 400 to return to a free rotation state.

[0084] The embodiments should not be regarded as limitations on the present invention, but any improvements made based on the spirit of the present invention should be within the protection scope of the present invention.

Claims

1. A disconnecting switch that can be rotated clockwise / counterclockwise to the same position to achieve different on / off states, comprising a handle (400), a locking mechanism (300), a first switching unit (100), and a second switching unit (200), wherein the handle (400) can drive the locking mechanism (300) to move, thereby activating each switching unit, characterized in that: The handle (400) has a first direction rotation path and a second direction rotation path; The first switching unit (100) includes: The first housing (110) has symmetrically arranged contact assemblies inside, the contact assemblies including a moving contact (700), a stationary contact (600) and a driving assembly (500) for driving the moving contact (700) to contact or disconnect from the stationary contact (600). The first isolation member (120) is rotatably disposed in the first housing (110), and has a first protrusion (121) and a second protrusion (122) distributed in the circumferential direction for driving the drive assembly (500) in the corresponding housing to move; The second switching unit (200) includes: The second housing (210) has symmetrically arranged contact assemblies inside, the contact assemblies including a moving contact (700), a stationary contact (600) and a drive assembly (500) for driving the moving contact (700) to contact or disconnect from the stationary contact (600). The second isolator (220) is rotatably disposed within the second housing (210), and has a third protrusion (221) and a fourth protrusion (222) distributed circumferentially thereon for driving the drive assembly (500) within the corresponding housing to move. The locking mechanism (300) includes: Third housing (310); The drive shaft (320) is rotatably disposed within the third housing (310) and is linked to the handle (400) and the second isolator (220) respectively, or linked to the handle (400) and the first isolator (120). The surface of the first protrusion (121) is provided with a first limiting block (123), and the inner wall of the first housing (110) is provided with a second limiting block (111) that forms a limiting cooperation with the first limiting block (123). A clutch assembly is provided between the first isolation member (120) and the second isolation member (220), or between the second isolation member (220) and the drive shaft (320); In the first isolation member (120) and the second isolation member (220), the first protrusion (121) and the third protrusion (221) are symmetrically arranged, and the second protrusion (122) and the fourth protrusion (222) are symmetrically arranged; When the handle (400) rotates 180° along the first direction rotation path, the first limiting block (123) and the second limiting block (111) form a limiting engagement on the rotation path to restrict the first isolating member (120) from continuing to move. The handle (400) continues to move through the clutch assembly, so that the isolating switch is in the first switch state. When the handle (400) rotates 180° along the second direction rotation path, the first limiting block (123) does not form a limiting engagement with the second limiting block (111), and the handle (400) drives the first isolating member (120) to continue moving, so that the isolating switch is in the second switch state.

2. The isolating switch according to claim 1, which can achieve different on / off states by rotating clockwise / counterclockwise to the same position, is characterized in that: The arc length of the first protrusion (121) is greater than the arc length of the second protrusion (122), and the arc length of the third protrusion (221) is greater than the arc length of the fourth protrusion (222).

3. The isolating switch according to claim 1, which rotates clockwise / counterclockwise to the same position to achieve different on / off states, is characterized in that: The first protrusion (121) has an arc length of 90°, and / or the third protrusion (221) has an arc length of 90°.

4. The isolating switch according to claim 1, which rotates clockwise / counterclockwise to the same position to achieve different on / off states, is characterized in that: The drive components (500) located on the same side in the first switch unit (100) and the second switch unit (200) are arranged in layers in the height direction.

5. A disconnecting switch according to claim 1, which can be rotated clockwise / counterclockwise to the same position to achieve different on / off states, characterized in that: The first protrusion (121) and the second protrusion (122) are staggered in the height direction, and / or the third protrusion (221) and the fourth protrusion (222) are staggered in the height direction.

6. A disconnecting switch according to claim 1, which can be rotated clockwise / counterclockwise to the same position to achieve different on / off states, characterized in that: The surface of the third protrusion (221) is provided with a third limiting block, the second housing (210) is provided with a fourth limiting block, and the third limiting block is provided with a groove (224) through which the fourth limiting block can pass.

7. A disconnecting switch according to claim 1, which can be rotated clockwise / counterclockwise to the same position to achieve different on / off states, characterized in that: The first isolation member (120) and / or the second isolation member (220) are provided with a rotating shaft at their upper ends. The second isolation member (220) and / or the transmission shaft (320) are provided with a limiting groove adapted to the rotating shaft at their bottom. The outer periphery of the rotating shaft is provided with a plurality of limiting ribs (223). The inner wall of the limiting groove is provided with a plurality of clutch grooves (321) that allow the limiting ribs (223) to rotate.

8. A disconnecting switch that can achieve different on / off states by rotating clockwise / counterclockwise to the same position according to claim 1, characterized in that: The drive shaft is provided with a positioning groove (322) on its outer periphery, and the third housing (310) is provided with symmetrical positioning components (700), which are adapted to the positioning groove (322).

9. A disconnecting switch according to claim 1, which can be rotated clockwise / counterclockwise to the same position to achieve different on / off states, characterized in that: The handle (400) is equipped with a locking component.

10. A disconnecting switch that can be rotated clockwise / counterclockwise to the same position to achieve different on / off states, as described in claim 9, characterized in that: The locking assembly includes a locking groove (420) or locking hole provided on the surface of the third housing (310) and a locking member (410) that can form a limiting engagement with the locking groove (420) or locking hole.

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