A high-low voltage switch cabinet interlocking structure

Abstract

The application relates to the field of interlocking structures and discloses a high-low voltage switch cabinet interlocking structure which comprises a interlocking structure body, a lock core and a switch blade installed on the interlocking structure body, the lock core penetrates through the interlocking structure body from left to right, when the flexible conductive sheet is extruded, the rubber reinforcing rib is deformed under stress, the rubber reinforcing rib has good elastic properties and can provide elastic support for the flexible conductive sheet, so that the flexible conductive sheet can keep a certain shape and position when contacting the conductive contact plate, and damage caused by excessive bending is prevented; and the material properties (elasticity of rubber) of the rubber reinforcing rib can produce obvious jerk feeling when the switch blade is switched, when the flexible conductive sheet is extruded, the rubber reinforcing rib can produce certain resistance due to elastic deformation, the resistance can be perceived as jerk feeling by the user in the operation process, the jerk feeling can explicitly inform the user that the switch blade has reached the closed or open position, so that the user can clearly know the switch state.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of interlocking structure, in particular to a high-low voltage switch cabinet interlocking structure. BACKGROUND

[0002] In the power switch cabinet, 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 found that in the prior art, when the lock cylinder is rotated, the moving contact can be swung to the fixed contacts on both sides to form current conduction or not. However, since the rotating shaft of the lock cylinder is only connected to the knife switch by a connecting plate without other reset, support and fixing structures, when the connecting plate is disconnected, the knife switch will fall due to gravity and hit the shell of the power switch cabinet. Over time, this will cause the parts in the interlocking structure to loosen, affecting the connection tightness of the knife switch and the conductive contacts. Moreover, when the knife switch is closed or opened, there is no obvious feeling whether the knife switch is in contact with the surface of the conductive contact. SUMMARY

[0003] The present application provides a high-low voltage switch cabinet interlocking structure which overcomes the deficiencies described in the background art.

[0004] The technical solution adopted by the present application to solve its technical problems is:

[0005] A high-low voltage switch cabinet interlocking structure, comprising a interlocking structure body, a lock cylinder and a knife switch mounted on the interlocking structure body, the lock cylinder penetrates through the interlocking structure body from left to right, the interlocking structure body is provided with an upper and lower symmetrically arranged conductive contact plate one and a conductive contact plate two, the conductive contact plate one and the conductive contact plate two are respectively connected to the conductive wire through a fixed sheet, and the conductive contact plate one and the conductive contact plate two form current conduction through the knife switch;

[0006] The knife switch is movably connected to the conductive contact plate two, and the lock cylinder is connected to the knife switch through a hinge mechanism. When the lock cylinder is rotated, the hinge mechanism drives the knife switch to abut against the surface of the conductive contact plate one to form current conduction;

[0007] The knife switch comprises symmetrically arranged conductive plates, and a soft connecting piece is arranged between the conductive plates. When the lock cylinder is rotated to abut the knife switch against the surface of the conductive contact plate one, the soft connecting piece abuts against the surface of the conductive contact plate one.

[0008] A preferred technical solution, the soft connecting piece comprises clamping pieces symmetrically arranged on the two conductive plates, the clamping pieces comprise 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 arranged on the inner side of the end of the flexible conductive sheet close to the conductive plate, and the magnetic block is arranged on the inner end of the side of the flexible conductive sheet away from the conductive plate, and the magnetic blocks on the two conductive plates are magnetically attracted.

[0009] The rubber reinforcing rib is arranged in an open shape at one end close to the magnetic block, and the middle part of the rubber reinforcing rib is arranged in a concave shape, so that the rubber reinforcing rib is deformed when the flexible conductive sheet is pressed.

[0010] In a preferred technical solution, one end of the flexible conductive sheet close to the magnetic block is bent inward in a C shape, and there is a movable gap between the flexible conductive sheet and the conductive plate, and the gap is reduced until the surface of the conductive plate is abutted when the flexible conductive sheet is deformed under stress.

[0011] In a preferred technical solution, the conductive contact plate one is provided with a contact plate body one, the surface of the conductive contact plate two is provided with a contact plate body two, the gate is connected with the contact plate body two through a connecting shaft two, the hinge mechanism comprises a connecting strip and an insulating connecting strip, one end of the connecting strip is connected with the lock core, and the other end is connected with the connecting shaft one arranged in the middle of the gate through the insulating connecting strip, so that the gate is swung by the lock core when the lock core is rotated.

[0012] In a preferred technical solution, the insulating connecting strip comprises a deformation connecting part, a rubber sheet one and a rubber sheet two, the rubber sheet one and the rubber sheet two are connected through the deformation connecting part, the deformation connecting part comprises two elastic strips arranged symmetrically, the middle part of each elastic strip is provided with a raised part, the raised parts on the surfaces of the two elastic strips are raised outward respectively, and the adjacent surfaces of the two raised parts are provided with limiting protrusions, and there is a gap between the two limiting protrusions.

[0013] In a preferred technical solution, the connecting shaft two comprises a shaft body and a shaft sleeve sleeved outside the shaft body, the two conductive plates are connected through the shaft sleeve, and the two ends of the shaft body respectively extend outward to be connected with the adjacent contact plate body two;

[0014] The surface of the middle part of the shaft body is provided with a clamping groove recessed inward, a plurality of arc protrusions are arranged in an annular array on the surface of the clamping groove, there is a gap between two adjacent arc protrusions, the corresponding part of the shaft sleeve and the clamping groove is provided with a corresponding protrusion ring, a plurality of air bags are arranged on the surface of the protrusion ring, the air bags and the arc protrusions are arranged in an alternating and spaced manner, and the arc protrusions are abutted with the air bags when the shaft body is rotated.

[0015] The air bag is provided with a cavity, and the cavity extends outward through a through hole and deforms when the air bag is stressed.

[0016] Compared with the prior art, the technical solution has the following advantages:

[0017] The soft connecting piece can buffer the impact force between the switch blade and the conductive contact plate one. In the prior art, due to the lack of an effective buffering structure, the switch blade falls due to gravity and impacts the power switch cabinet shell when being disconnected, which causes the parts to be loose and affects the connection tightness of the switch blade and the conductive contact plate one. The elastic property of the soft connecting piece can absorb part of the impact energy when the switch blade abuts against the surface of the conductive contact plate one, reduces the impact degree, and effectively avoids the problem that the parts are loose due to long-term impact.

[0018] When the flexible conductive sheet is pressed, the rubber reinforcing rib is stressed and deformed. The rubber reinforcing rib has good elastic properties and can provide elastic support for the flexible conductive sheet, so that the flexible conductive sheet maintains a certain shape and position when contacting the conductive contact plate one, and is prevented from being damaged due to excessive bending. In addition, the material properties (elasticity of rubber) of the rubber reinforcing rib will produce a clear jerk feeling when the switch blade is opened. When the flexible conductive sheet is pressed, the rubber reinforcing rib will produce a certain resistance due to elastic deformation. This resistance will be perceived by the user as a jerk feeling during operation. This jerk feeling can clearly inform the user that the switch blade has reached the closed or open position, so that the user can clearly know the state of the switch. BRIEF DESCRIPTION OF DRAWINGS

[0019] The application will be further described below in combination with the drawings and examples.

[0020] Figure 1 is a whole view of the application.

[0021] Figure 2 is Figure 1 a side view.

[0022] Figure 3 is a perspective view of the switch blade.

[0023] Figure 4 is Figure 3 a top view.

[0024] Figure 5 is a structure view of the clamping piece.

[0025] Figure 6 is Figure 3 a side view.

[0026] Figure 7 is a perspective view of the connecting shaft two.

[0027] Figure 8 is a half-section view of the shaft sleeve.

[0028] In the drawings: interlocking structure body 1, lock core 2, switch blade 3;

[0029] conductive contact plate one 11, contact plate body 111, conductive contact plate two 12, contact plate body two 121, fixed sheet 13;

[0030] Connecting strip 21, insulating connecting strip 22, deformable connecting part 221, rubber sheet one 222, rubber sheet two 223;

[0031] 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

[0032] 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.

[0033] 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.

[0034] 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.

[0035] 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.

[0036] Further, the soft connecting piece comprises clamping pieces 31 symmetrically arranged on the two conductive plates, the clamping piece 31 comprises a flexible conductive sheet 311, a rubber reinforcing rib 312 and a magnetic block 313, the surface of the flexible conductive sheet 311 is arranged in an inclined manner, the rubber reinforcing rib 312 is arranged on the inner side of one end of the flexible conductive sheet 311 close to the conductive plate, and the magnetic block 313 is arranged on the inner end of the side of the flexible conductive sheet 311 away from the conductive plate, and the magnetic blocks 313 on the two conductive plates are magnetically attracted to each other.

[0037] The end of the rubber reinforcing rib 312 close to the magnetic block 313 is arranged in an open manner, and the middle part of the rubber reinforcing rib 312 is arranged in an inner recessed manner. When the flexible conductive sheet 311 is squeezed, the rubber reinforcing rib 312 deforms under stress. 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 contacting the conductive contact plate 11, preventing damage due to excessive bending. In addition, the end of the flexible conductive sheet 311 close to the magnetic block 313 is bent inward in a C shape, and there is a movable gap between the flexible conductive sheet 311 and the conductive plate. When the flexible conductive sheet 311 deforms under stress, the gap is reduced until it comes into contact with the surface of the conductive plate. Moreover, the material properties (elasticity of rubber) of the rubber reinforcing rib 312 will produce a clear jerk feeling when the switch blade 3 is closed. When the flexible conductive sheet 311 is squeezed, the rubber reinforcing rib 312 will produce a certain resistance due to elastic deformation. This resistance will be perceived by the user as a jerk during operation. This jerk can clearly inform the user that the blade 3 has reached the closed or open position, so that the user can clearly know the state of the switch blade.

[0038] The conductive contact plate 11 is provided with a contact plate body 111, the surface of the conductive contact plate 12 is provided with a contact plate body 121, the blade 3 is connected to the contact plate body 121 through a connecting shaft 33, and the hinge mechanism comprises a connecting strip 21 and an insulating connecting strip 22. One end of the connecting strip 21 is connected to the lock core 2, and the other end is connected to the connecting shaft 32 arranged in the middle of the blade 3 through the insulating connecting strip 22, so that when the lock core 2 is rotated, the blade 3 is swung by the lock core 2.

[0039] Moreover, the insulating connecting strip 22 comprises a deformation connecting part 221, a rubber sheet 222 and a rubber sheet 223, the rubber sheet 222 and the rubber sheet 223 are connected through the deformation connecting part 221, the deformation connecting part 221 comprises symmetrically arranged elastic strips, the middle part of each of the two elastic strips is provided with a raised part, the raised parts on the surfaces of the two elastic strips are raised outward respectively, and the adjacent surfaces of the two raised parts are provided with limiting protrusions, and there is a gap between the two limiting protrusions.

[0040] As can be seen above, when the lock cylinder 2 is rotated, the force is transmitted to the blade 3 through the connecting strip 21 and the insulating connecting strip 22, and the elastic strip can absorb and release energy. The elastic property of the elastic strip causes the elastic strip to deform during the swinging of the blade 3, thereby generating a certain resistance. This resistance is perceived by the user as a jerk during operation, clearly informing the user that the blade 3 has reached the closed or open position. The raised portion is located in the middle of the elastic strip, and the outwardly raised design increases the local rigidity of the elastic strip. When the elastic strip is subjected to external force, the raised portion can provide additional support force to enhance the anti-deformation ability of the elastic strip. At the same time, the presence of the raised portion causes the elastic strip to produce a more obvious resistance change during deformation, further enhancing the jerk. This design not only improves the stability of the structure, but also allows the user to more clearly feel the opening and closing state of the blade 3 during operation. The limiting protrusions are arranged on the adjacent surfaces of the two raised portions, and there is a gap between them. The main function of the limiting protrusions is to limit the deformation range of the elastic strip to prevent damage caused by excessive deformation of the elastic strip. During the swinging of the blade 3, the deformation of the elastic strip will cause the limiting protrusions to contact each other, generating a significant resistance. This resistance not only protects the elastic strip, but also further enhances the jerk through the interaction between the limiting protrusions. The user can clearly feel this resistance change during operation, thereby clearly knowing that the blade 3 has reached the closed or open position.

[0041] Further, the connecting shaft two 33 includes a shaft body 332 and a shaft sleeve 331 sleeved outside the shaft body 332, two conductive plates are connected through the shaft sleeve 331, and both ends of the shaft body 332 respectively extend outward to be connected with adjacent touch version bodies two 121; an inwardly recessed clamping groove is arranged on the middle surface of the shaft body 332, a plurality of arc-shaped protrusions 3321 are arranged in an annular array on the surface of the clamping groove, and a gap exists between two adjacent arc-shaped protrusions 3321; a corresponding protrusion ring is arranged on the corresponding position of the shaft sleeve 331 and the clamping groove, a plurality of air bags 3311 are arranged on the surface of the protrusion ring, the air bags 3311 and the arc-shaped protrusions 3321 are arranged in an interlaced and spaced manner, and the arc-shaped protrusions 3321 abut against the air bags 3311 when the shaft body 332 is rotated; the air bags 3311 are provided with cavities 3312, and the cavities 3312 extend outward through a through hole 3313 and deform when the air bags 3311 are subjected to force.

[0042] In the high-low voltage switch cabinet interlocking structure of the application, the design of the connecting shaft two 33 realizes the function of preventing the relative rotation of the shaft body 332 and the shaft sleeve 331 in the static state and smoothly rotating when needed through the interaction of the arc-shaped protrusion 3321 and the air bag 3311. Specifically, when the shaft body 332 and the shaft sleeve 331 are in the 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 is communicated with the outside through the through hole 3313, the air bag 3311 maintains a certain elasticity when not under stress, and the contact point between the air bag 3311 and the arc-shaped protrusion 3321 generates sufficient friction force, preventing the relative rotation of the shaft body 332 and the shaft sleeve 331 due to accidental vibration or external force, ensuring the stable connection of the blade 3 and avoiding the change of the switch state caused by accident. When the shaft body 332 needs to be rotated, an external force is applied to make it rotate, and the arc-shaped protrusion 3321 starts to press the air bag 3311. After the air bag 3311 is stressed, it deforms, and the air in the cavity 3312 is discharged through the through hole 3313. With the air being discharged, the elastic resistance of the air bag 3311 gradually decreases, and the arc-shaped protrusion 3321 smoothly slides through the air bag 3311, realizing the smooth rotation of the shaft body 332. At the same time, the deformation of the air bag 3311 and the air discharge process produce a clear jerk, allowing users to perceive the switch state of the blade 3, not only improving the operation safety, but also allowing users to intuitively understand the switch position of the blade 3, enhancing the operation reliability. This design takes into account the stability and operability through the ingenious mechanical structure and material properties, significantly improving the performance and user experience of the switch cabinet interlocking structure.

[0043] The above is only a preferred embodiment of the application, and therefore cannot limit the scope of the application. Any equivalent changes and modifications made in accordance with the scope and content of the application should still be within the scope of the application.

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. 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.

2. The high- and low-voltage switchgear interlocking structure according to claim 1, 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.

3. The high- and low-voltage switchgear interlocking structure according to claim 2, 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.

4. The high- and low-voltage switchgear interlocking structure according to claim 3, 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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