Interlocking structure of high-low voltage switch cabinet

Abstract

The invention relates to the field of interlocking structures, and discloses a high-low voltage switch cabinet interlocking structure which comprises an interlocking structure body, a lock cylinder and a knife switch installed on the interlocking structure body, the lock cylinder penetrates through the interlocking structure body from left to right, when a flexible conducting strip is extruded, a rubber reinforcing rib is stressed to deform, and the knife switch is installed on the interlocking structure body. The rubber reinforcing ribs have good elastic characteristics and can provide elastic support for the flexible conductive sheet, so that the flexible conductive sheet keeps a certain shape and position when being in contact with the conductive touch panel I, and damage caused by excessive bending is prevented; the material characteristic (elasticity of rubber) of the rubber reinforcing rib can generate obvious pause feeling when the switch blade is switched on and off, when the flexible conducting strip is extruded, the rubber reinforcing rib can generate certain resistance due to elastic deformation, and the resistance can be perceived as pause feeling by a user in the operation process, so that the safety of the switch blade is improved. The pause feeling can clearly inform a user that the knife switch has reached the closing or opening position, so that the user can clearly know the state of the switch.

Description

Technical Field

[0001] This invention relates to the field of interlocking structures, specifically an interlocking structure for high and low voltage switchgear. Background Technology

[0002] In power switchgear, the grounding switch and the circuit breaker are interlocked through a mechanical interlocking device. When the grounding switch is closed, the circuit breaker cannot be closed; conversely, when the circuit breaker is in the closed state, the grounding switch cannot be closed. However, the applicant has discovered that in the existing interlocking structure, although rotating the lock cylinder can cause the switch to swing to the fixed contacts on both sides to determine whether current is conducting, the lock cylinder's rotating shaft is only connected to the switch via a connecting plate, without any other reset or support fixing structure. When rotating the shaft to disconnect the switch, the switch will fall with gravity and impact the power switchgear housing. Over time, this will cause the components in the interlocking structure to loosen, affecting the tightness of the connection between the switch and the conductive contacts. Furthermore, there is no clear sense of whether the switch is pressed against the conductive contact surface when the switch is closed or opened. Summary of the Invention

[0003] This invention provides an interlocking structure for high and low voltage switchgear, which overcomes the shortcomings described in the background art.

[0004] The technical solution adopted by this invention to solve its technical problem is: A high- and low-voltage switchgear interlocking structure includes an interlocking structure body, a lock cylinder, and a switch installed on the interlocking structure body. The lock cylinder passes through the interlocking structure body from left to right. The interlocking structure body is provided with a conductive contact plate 1 and a conductive contact plate 2 arranged symmetrically on the upper and lower sides. The conductive contact plate 1 and the conductive contact plate 2 are respectively connected to a wire through a fixing piece. Current is connected between the conductive contact plate 1 and the conductive contact plate 2 through the switch. The switch is movably connected to the second conductive contact plate, and the lock cylinder is connected to the switch through a hinge mechanism. When the lock cylinder is rotated to open or close, the hinge mechanism will drive the switch to either abut against the surface of the first conductive contact plate to form current conduction. The switch includes symmetrically arranged conductive plates, with a flexible connector between the conductive plates. When the lock core is rotated to press the switch against a surface of the conductive contact plate, the flexible connector presses against a surface of the conductive contact plate.

[0005] In a preferred embodiment, the flexible connector includes clamping components symmetrically arranged on two conductive plates. The clamping components include a flexible conductive sheet, a rubber reinforcing rib, and a magnetic block. The surface of the flexible conductive sheet is inclined. The rubber reinforcing rib is located on the inner side of the flexible conductive sheet near the conductive plate, while the magnetic block is located on the inner side of the flexible conductive sheet away from the conductive plate. The magnetic blocks on the two conductive plates are magnetically attracted to each other. The rubber reinforcing rib is open at one end near the magnetic block, and the middle of the rubber reinforcing rib is concave. When the flexible conductive sheet is squeezed, the rubber reinforcing rib deforms under force.

[0006] In a preferred embodiment, the flexible conductive sheet is bent inward in a C-shape at one end near the magnetic block, and there is a movable gap between it and the conductive plate. When the flexible conductive sheet is subjected to force and deforms, the gap shrinks until it abuts against the surface of the conductive plate.

[0007] In a preferred embodiment, the first conductive contact plate is provided with a contact plate body, the second conductive contact plate is provided with a second contact plate body, and the switch is connected to the second contact plate body via a second connecting shaft. The hinge mechanism includes a connecting strip and an insulating connecting strip. One end of the connecting strip is connected to the lock cylinder, and the other end is connected to the first connecting shaft located in the middle of the switch via the insulating connecting strip, so that when the lock cylinder is rotated, the switch is pushed to swing by the lock cylinder.

[0008] In a preferred embodiment, the insulating connecting strip includes a deformable connecting part, a rubber sheet one, and a rubber sheet two. The rubber sheet one and the rubber sheet two are connected by the deformable connecting part. The deformable connecting part includes symmetrically arranged elastic strips. Each of the two elastic strips has a raised portion in the middle. The raised portions on the surfaces of the two elastic strips bulge outwards, and each of the adjacent surfaces of the two raised portions has a limiting protrusion. There is a gap between the two limiting protrusions.

[0009] In a preferred embodiment, the connecting shaft 2 includes a shaft body and a bushing sleeve fitted on the outside of the shaft body. The two conductive plates are connected through the bushing sleeve, and the two ends of the shaft body extend outward to connect with the adjacent conductive plate body 2. The middle surface of the shaft body is provided with an inwardly recessed groove. The surface of the groove is arranged in a ring with multiple arc-shaped protrusions. There is a gap between two adjacent arc-shaped protrusions. The bushing and the groove are provided with corresponding protruding rings. The surface of the protruding rings is provided with multiple air bladders. The air bladders and the arc-shaped protrusions are arranged alternately. When the shaft body is rotated, the arc-shaped protrusions abut against the air bladders. The airbag has a cavity inside, which extends outward through a through hole, and deforms when the airbag is subjected to force.

[0010] Compared with existing technologies, this technical solution has the following advantages: Flexible connectors can buffer the impact force between the switch and the conductive contact plate. In the prior art, due to the lack of an effective buffer structure, the switch will fall due to gravity and impact the power switch cabinet housing when the connection is broken, causing parts to loosen and affecting the tightness of the connection between the switch and the conductive contact plate. The elastic properties of flexible connectors can absorb some of the impact energy when the switch abuts against the surface of the conductive contact plate, reducing the impact force and effectively preventing the problem of parts loosening due to long-term impact.

[0011] When the flexible conductive sheet is compressed, the rubber reinforcing ribs deform under stress. These ribs, with their excellent elasticity, provide elastic support to the flexible conductive sheet, ensuring it maintains a certain shape and position upon contact with the conductive contact plate, preventing damage from excessive bending. Furthermore, the material properties of the rubber reinforcing ribs (the elasticity of rubber) produce a noticeable jolt when the switch is turned on or off. When the flexible conductive sheet is compressed, the rubber reinforcing ribs generate resistance due to elastic deformation; this resistance is perceived by the user as a jolt during operation. This jolt clearly informs the user that the switch has reached the closed or open position, allowing the user to clearly understand the status of the switch. Attached Figure Description

[0012] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0013] Figure 1 This is an overall diagram of the present invention.

[0014] Figure 2 for Figure 1 Side view diagram.

[0015] Figure 3 This is a three-dimensional schematic diagram of a switch.

[0016] Figure 4 for Figure 3 Top view diagram.

[0017] Figure 5 This is a schematic diagram of the clamping component.

[0018] Figure 6 for Figure 3 Side view diagram.

[0019] Figure 7 This is a three-dimensional schematic diagram of the connecting shaft.

[0020] Figure 8 This is a schematic diagram of a half section of the bushing.

[0021] In the diagram: 1. Chain mechanism body; 2. Lock cylinder; 3. Knife gate; Conductive contact plate 11, contact plate body 111, conductive contact plate 2 12, contact plate body 2 121, fixing piece 13; Connecting strip 21, insulating connecting strip 22, deformable connecting part 221, rubber sheet one 222, rubber sheet two 223; Clamping component 31, flexible conductive sheet 311, rubber reinforcing rib 312, magnetic block 313, connecting shaft one 32, connecting shaft two 33, bushing 331, airbag 3311, cavity 3312, through hole 3313, shaft body 332, arc-shaped protrusion 3321. Detailed Implementation

[0022] like Figures 1 to 8 As shown, the present invention proposes an interlocking structure for high and low voltage switchgear, including an interlocking structure body 1, a lock cylinder 2, and a switch 3 installed on the interlocking structure body 1. The lock cylinder 2 passes through the interlocking structure body 1 from left to right. The interlocking structure body 1 is provided with a conductive contact plate 11 and a conductive contact plate 12 arranged symmetrically on the upper and lower sides. The conductive contact plate 11 and the conductive contact plate 12 are respectively connected to wires through a fixing piece 13. Current is connected between the conductive contact plate 11 and the conductive contact plate 12 through the switch 3. The switch 3 is movably connected to the conductive contact plate 12, and the lock core 2 is connected to the switch 3 through a hinge mechanism. When the lock core 2 is rotated to open or close, the hinge mechanism will drive the switch 3 to abut against the surface of the conductive contact plate 11 to form current conduction. The switch 3 includes symmetrically arranged conductive plates, and a flexible connector is provided between the conductive plates. When the lock core 2 is rotated to press the switch 3 against the surface of the conductive contact plate 11, the flexible connector presses against the surface of the conductive contact plate 11.

[0023] The flexible connector can buffer the impact force between the switch 3 and the conductive contact plate 11. In the prior art, due to the lack of an effective buffer structure, the switch 3 will fall due to gravity and impact the power switch cabinet housing when the connection is broken, causing parts to loosen and affecting the tightness of the connection between the switch 3 and the conductive contact plate 11. The elastic properties of the flexible connector can absorb some of the impact energy when the switch 3 abuts against the surface of the conductive contact plate 11, reducing the impact force and effectively preventing the problem of parts loosening due to long-term impact. Secondly, the flexible connector can ensure good contact between the switch 3 and the conductive contact plate 11.

[0024] Furthermore, the flexible connector includes clamping members 31 symmetrically arranged on two conductive plates. The clamping members 31 include a flexible conductive sheet 311, a rubber reinforcing rib 312, and a magnetic block 313. The surface of the flexible conductive sheet 311 is inclined. The rubber reinforcing rib 312 is arranged on the inner side of the flexible conductive sheet 311 near the conductive plate, while the magnetic block 313 is arranged on the inner end of the flexible conductive sheet 311 away from the conductive plate. The magnetic blocks 313 on the two conductive plates are magnetically attracted to each other. The rubber reinforcing rib 312 is open at one end near the magnetic block 313, and the middle of the rubber reinforcing rib 312 is concave. When the flexible conductive sheet 311 is squeezed, the rubber reinforcing rib 312 deforms under force. The rubber reinforcing rib 312 has good elastic properties and can provide elastic support for the flexible conductive sheet 311, so that it maintains a certain shape and position when it contacts the conductive contact plate 11, preventing damage due to excessive bending. Furthermore, since the flexible conductive sheet 311 is bent inward in a C-shape at one end near the magnetic block 313 and there is a movable gap between it and the conductive plate, when the flexible conductive sheet 311 is deformed under force, this gap narrows until it abuts against the surface of the conductive plate. Moreover, the material properties of the rubber reinforcing rib 312 (the elasticity of rubber) will produce a noticeable jerking sensation when switching the switch 3. When the flexible conductive sheet 311 is squeezed, the rubber reinforcing rib 312 will generate a certain resistance due to elastic deformation. This resistance will be perceived by the user as a jerking sensation during operation. This tactile feedback clearly informs the user that the switch 3 has reached the closed or open position, thus allowing the user to clearly understand the status of the switch.

[0025] The conductive contact plate 11 is provided with a contact plate body 111, and the conductive contact plate 12 is provided with a contact plate body 121. The switch 3 is connected to the contact plate body 121 through a connecting shaft 33. The hinge mechanism includes a connecting strip 21 and an insulating connecting strip 22. One end of the connecting strip 21 is connected to the lock cylinder 2, and the other end is connected to the connecting shaft 32 located in the middle of the switch 3 through the insulating connecting strip 22, so that when the lock cylinder 2 is rotated, the switch 3 is pushed to swing by the lock cylinder 2.

[0026] Furthermore, the insulating connecting strip 22 includes a deformable connecting part 221, a rubber sheet 222, and a rubber sheet 223. The rubber sheet 222 and the rubber sheet 223 are connected by the deformable connecting part 221. The deformable connecting part 221 includes symmetrically arranged elastic strips. Each of the two elastic strips has a raised part in the middle. The raised parts on the surfaces of the two elastic strips bulge outwards, and each of the adjacent surfaces of the two raised parts has a limiting protrusion. There is a gap between the two limiting protrusions.

[0027] As described above, when the lock cylinder 2 rotates, the force is transmitted to the switch 3 through the connecting strip 21 and the insulating connecting strip 22. The elastic strip can absorb and release energy. Its elastic properties cause the elastic strip to deform during the swing of the switch 3, thereby generating a certain resistance. This resistance is perceived by the user as a jerking sensation during operation, clearly informing the user that the switch 3 has reached the closed or open position. The raised part is located in the middle of the elastic strip. The outward bulge design increases the local rigidity of the elastic strip. When the elastic strip is subjected to external force, the raised part can provide additional support, enhancing the elastic strip's resistance to deformation. At the same time, the presence of the raised part makes the elastic strip generate a more obvious change in resistance during deformation, further... The enhanced tactile feedback not only improves structural stability but also allows users to more clearly perceive the opening and closing status of the switch 3 during operation. The limiting protrusions are located on the adjacent surfaces of the two raised sections, with a gap between them. The main function of the limiting protrusions is to limit the deformation range of the elastic strip and prevent excessive deformation that could lead to damage. During the swing of the switch 3, the deformation of the elastic strip causes the limiting protrusions to come into contact with each other, generating significant resistance. This resistance not only protects the elastic strip but also further enhances the tactile feedback through the interaction between the limiting protrusions. Users can clearly feel this change in resistance during operation, thus clearly knowing that the switch 3 has reached the closed or open position.

[0028] Furthermore, the connecting shaft 33 includes a shaft body 332 and a bushing 331 sleeved on the outside of the shaft body 332. The two conductive plates are connected through the bushing 331, and both ends of the shaft body 332 extend outward to connect with the adjacent contact plate body 121. The middle surface of the shaft body 332 is provided with an inwardly recessed groove, and the surface of the groove has a plurality of arc-shaped protrusions 3321 arranged in a ring, with a spacing between two adjacent arc-shaped protrusions 3321. The bushing 331 is provided with a corresponding protruding ring at the corresponding position of the slot. The surface of the protruding ring is provided with a plurality of air bladders 3311. The air bladders 3311 and the arc-shaped protrusions 3321 are arranged alternately. When the shaft 332 is rotated, the arc-shaped protrusions 3321 abut against the air bladders 3311. The air bladder 3311 is provided with a cavity 3312. The cavity 3312 extends outward through a through hole 3313. When the air bladder 3311 is subjected to force, it deforms.

[0029] In the high and low voltage switchgear interlocking structure of the present invention, the design of the connecting shaft 33 cleverly achieves the function of preventing relative rotation between the shaft 332 and the bushing 331 in a static state, while allowing smooth rotation when needed, through the interaction between the arc-shaped protrusion 3321 and the air bag 3311. Specifically, when the shaft 332 and the bushing 331 are in a static state, the arc-shaped protrusion 3321 and the air bag 3311 are in contact with each other. Since the air bag 3311 has a cavity 3312 inside, and the cavity 3312 communicates with the outside through the through hole 3313, the air bag 3311 maintains a certain elasticity when not under force, and the contact point between it and the arc-shaped protrusion 3321 generates sufficient friction to prevent the shaft 332 and the bushing 331 from rotating relative to each other due to accidental vibration or external force, ensuring the stable connection of the switch 3 and avoiding accidental changes in the switch state. When it is necessary to rotate the shaft 332, an external force is applied to make it rotate, and the arc-shaped protrusion 3321 begins to squeeze the air bag 3311. When the airbag 3311 is subjected to force, it deforms, and the air in the cavity 3312 is expelled through the through hole 3313. As the air is expelled, the elastic resistance of the airbag 3311 gradually decreases, allowing the arc-shaped protrusion 3321 to smoothly slide over the airbag 3311, enabling the shaft 332 to rotate smoothly. Simultaneously, the deformation of the airbag 3311 and the air expulsion process produce a noticeable tactile feedback, allowing the user to perceive the on / off status of the switch 3. This not only improves operational safety but also provides the user with a direct understanding of the switch 3's position, enhancing operational reliability. This design, through ingenious mechanical structure and material properties, balances stability and operability, significantly improving the performance of the switchgear interlocking structure and the user experience.

[0030] The above description is merely a preferred embodiment of the present invention, and therefore should not be construed as limiting the scope of the present invention. All equivalent changes and modifications made in accordance with the scope of the patent and the contents of the specification should still fall within the scope of the present invention.

Claims

1. A high- and low-voltage switchgear interlocking structure, characterized in that, The system includes a chain structure body, a lock cylinder, and a switch mounted on the chain structure body. The lock cylinder passes through the chain structure body from left to right. The chain structure body is provided with a conductive contact plate 1 and a conductive contact plate 2 arranged symmetrically on the upper and lower sides. The conductive contact plate 1 and the conductive contact plate 2 are respectively connected to a wire through a fixing piece. The conductive contact plate 1 and the conductive contact plate 2 are connected by a switch to form a current conduction. The switch is movably connected to the second conductive contact plate, and the lock cylinder is connected to the switch through a hinge mechanism. When the lock cylinder is rotated to open or close, the hinge mechanism will drive the switch to either abut against the surface of the first conductive contact plate to form current conduction. The switch includes symmetrically arranged conductive plates, and a flexible connector is provided between the conductive plates. When the lock core is rotated and the switch is pressed against a surface of the conductive contact plate, the flexible connector presses against a surface of the conductive contact plate. The flexible connector includes clamping components symmetrically arranged on two conductive plates. The clamping components include a flexible conductive sheet, a rubber reinforcing rib, and a magnetic block. The surface of the flexible conductive sheet is inclined. The rubber reinforcing rib is located on the inner side of the flexible conductive sheet near the conductive plate, while the magnetic block is located on the inner side of the flexible conductive sheet away from the conductive plate. The magnetic blocks on the two conductive plates are magnetically attracted to each other. The rubber reinforcing rib is open at one end near the magnetic block, and the middle of the rubber reinforcing rib is concave. When the flexible conductive sheet is squeezed, the rubber reinforcing rib deforms under force.

2. The high- and low-voltage switchgear interlocking structure according to claim 1, characterized in that, The flexible conductive sheet is bent inward in a C-shape at one end near the magnetic block, and there is a movable gap between it and the conductive plate. When the flexible conductive sheet is deformed by force, the gap shrinks until it comes into contact with the surface of the conductive plate.

3. The high- and low-voltage switchgear interlocking structure according to claim 2, characterized in that, The first conductive contact plate is provided with a contact plate body, and the second conductive contact plate is provided with a second contact plate body. The guillotine is connected to the second contact plate body through a second connecting shaft. The hinge mechanism includes a connecting strip and an insulating connecting strip. One end of the connecting strip is connected to the lock cylinder, and the other end is connected to the first connecting shaft located in the middle of the guillotine through the insulating connecting strip, so that when the lock cylinder is rotated, the guillotine is pushed to swing by the lock cylinder.

4. The high- and low-voltage switchgear interlocking structure according to claim 3, characterized in that, The insulating connecting strip includes a deformation connecting part, a rubber sheet one, and a rubber sheet two. The rubber sheet one and the rubber sheet two are connected by the deformation connecting part. The deformation connecting part includes symmetrically arranged elastic strips. Each of the two elastic strips has a raised part in the middle. The raised parts on the surfaces of the two elastic strips bulge outwards, and each of the adjacent surfaces of the two raised parts has a limiting protrusion. There is a gap between the two limiting protrusions.

5. The high- and low-voltage switchgear interlocking structure according to claim 4, characterized in that, The second connecting shaft includes a shaft body and a sleeve fitted on the outside of the shaft body. The two conductive plates are connected through the sleeve, and the two ends of the shaft body extend outward to connect with the adjacent second contact plate. The middle surface of the shaft body is provided with an inwardly recessed groove. The surface of the groove is arranged in a ring with multiple arc-shaped protrusions. There is a gap between two adjacent arc-shaped protrusions. The bushing and the groove are provided with corresponding protruding rings. The surface of the protruding rings is provided with multiple air bladders. The air bladders and the arc-shaped protrusions are arranged alternately. When the shaft body is rotated, the arc-shaped protrusions abut against the air bladders. The airbag has a cavity inside, which extends outward through a through hole, and deforms when the airbag is subjected to force.

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