Interlocking mechanism for switch device and switch device
By designing interlocking mechanisms and buffer components in the switching device, the problems of complex structure and high cost of traditional dual-power transfer switches are solved, realizing safe interlocking and kinetic energy absorption of the switching device, and improving power safety and production efficiency.
Patent Information
- Application Number
- CN202520505506.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-21
- Publication Date
- 2026-02-13
- Estimated Expiration
- 2035-03-21
AI Technical Summary
Traditional dual-power transfer switches have complex interlocking mechanisms and high production costs, making it difficult to effectively prevent the simultaneous closing of drive components.
Design an interlocking mechanism that is rotatably connected to the bracket of the switching device through a rotating hole, and uses a pair of driving planes to couple with the driving components respectively, limiting the switching device to only one driving mechanism to remain in the closed state at the same time, and using a buffer component to absorb kinetic energy to reduce impact.
It achieves effective interlocking of switching devices, avoids simultaneous closing due to misoperation, improves electrical safety, optimizes spatial layout, and reduces production costs.
Smart Images
Figure CN223911555U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] Example embodiments of the present disclosure generally relate to the field of electrical equipment, and in particular, to interlocking mechanisms for switch devices and switch devices. BACKGROUND
[0002] A dual power transfer switch is an electrical device used for automatic or manual switching between two different power sources, mainly applied to occasions with high requirements for power supply reliability. It can detect parameters such as voltage and frequency of two power sources, and when one power source fails or is powered off, it can quickly switch the load to the other normal power source to ensure the continuous power supply of the load and effectively avoid problems such as device stop running and production interruption caused by power interruption. CONTENT OF THE UTILITY MODEL
[0003] In a first aspect of the present disclosure, an interlocking mechanism for a switch device is provided. The interlocking mechanism includes: a main body portion arranged between a pair of drive assemblies of the switch device; a rotation hole formed through a middle portion of the main body portion and adapted to couple a rotation shaft of a support of the switch device therein to allow the main body portion to be rotatably connected to the support; and a pair of drive portions respectively formed on two sides of the main body portion towards the pair of drive assemblies and adapted to extend towards drive shafts of the corresponding drive assemblies, and each drive portion of the pair of drive portions includes: a drive plane arranged on a side of the corresponding drive shaft towards a closing direction, and wherein the drive plane of a first drive portion of the pair of drive portions is arranged to be pushed by the drive shaft of a first drive assembly of the pair of drive assemblies during closing of the first drive assembly to rotate the main body portion, so that the drive plane of a second drive portion of the pair of drive portions prevents a closing action of a second drive assembly of the pair of drive assemblies.
[0004] In some embodiments, the drive portion is arranged to extend from the main body portion in a radial direction of the rotation hole, and wherein the drive plane is an outer surface of the drive portion in the extending direction.
[0005] In some embodiments, the interlocking mechanism further includes: a pair of accommodation holes respectively formed on two sides of the main body portion to allow the coupling portion of the corresponding drive assembly to at least partially pass through.
[0006] In some embodiments, the main body portion and the pair of drive portions are integrally formed.
[0007] The interlocking mechanism provided according to the present disclosure is arranged between a pair of drive assemblies of a switch device and rotatably connected to a support of the switch device through a rotation hole. A pair of drive planes of a pair of drive portions of the interlocking mechanism are respectively coupled with the corresponding drive assemblies. If a first drive assembly of the pair of drive assemblies performs a closing operation, the drive shaft of the first drive assembly can be in contact with a first drive plane of the pair of drive planes of the interlocking mechanism and push the interlocking mechanism to rotate to a first interlocking position.
[0008] In the first interlocking position, a second driving plane in the interlocking mechanism, which is different from the first driving plane, can be rotated to a closing stroke of the second driving assembly, so that the second driving plane can block the closing of the second driving assembly, that is, the interlocking mechanism can limit only one driving mechanism of the switch device to be kept in the closed state at the same time, thereby realizing the interlocking of the switch device.
[0009] In a second aspect of the present disclosure, a switch device is provided. The switch device comprises a support, a pair of driving assemblies coupled to the support and adapted to rotate between a closed position and an open position, and an interlocking mechanism according to the first aspect of the present disclosure.
[0010] In some embodiments, the interlocking mechanism further comprises at least one buffer portion formed on an edge of the main portion of the interlocking mechanism in a radial direction of the rotation hole, and the switch device further comprises at least one buffer coupled to the support to be driven by the at least one buffer portion during closing of the driving assembly to absorb kinetic energy of the driving assembly, the buffer comprising a buffer arm rotatably coupled to the support and adapted to be pushed by the buffer portion to rotate during closing of the driving assembly, and an energy absorbing member arranged on a side of the buffer arm away from the main portion and adapted to be compressed to absorb kinetic energy of rotation of the buffer arm during closing of the driving assembly.
[0011] In some embodiments, the energy absorbing member is a compression spring.
[0012] In some embodiments, the buffer portion comprises a buffer groove formed on an edge of the main portion in a radial direction of the rotation hole, and wherein the buffer comprises a protrusion arranged on a side of the buffer arm facing the main portion and protruding towards the main portion.
[0013] In some embodiments, an end of the protrusion away from the buffer arm has a chamfer.
[0014] In some embodiments, a distance from a rotation point of the buffer arm rotating with the support to the protrusion is less than a distance from the rotation point to the energy absorbing member.
[0015] It should be understood that the content described in this part of the content is not intended to limit the key features or important features of the embodiments of the present disclosure, nor is it used to limit the scope of the present disclosure. Other features of the present disclosure will become apparent through the following description. BRIEF DESCRIPTION OF DRAWINGS
[0016] The above and other features, advantages, and aspects of embodiments of the present disclosure will become more apparent by describing in detail embodiments thereof with reference to the attached drawings in which:
[0017] Figure 1An internal structure diagram of a switch device is shown according to some embodiments of the present disclosure;
[0018] Figures 2A-2C An internal structure diagram of a switch device is shown according to some embodiments of the present disclosure;
[0019] Figure 3 An internal structure diagram of a switch device is shown according to some other embodiments of the present disclosure;
[0020] Figures 4A-4C An internal structure diagram of a switch device is shown according to some embodiments of the present disclosure;
[0021] Figure 5 An internal structure diagram of a switch device is shown according to some embodiments of the present disclosure; DETAILED DESCRIPTION
[0022] Embodiments of the present disclosure will be described in more detail with reference to the drawings. Although certain embodiments of the present disclosure are shown in the drawings, it is understood that the present disclosure can be embodied in various forms and should not be interpreted as being limited to the embodiments set forth herein, but rather, these embodiments are provided so that the present disclosure can be more thoroughly and completely understood. It is understood that the drawings and embodiments of the present disclosure are for exemplary purposes only and are not intended to limit the scope of protection of the present disclosure.
[0023] It is noted that the headings provided herein are not limitations of the disclosure. Various embodiments are described throughout this document and any type of embodiment can be included under any heading. Moreover, embodiments described in any heading can be combined with any other embodiment described in the same heading and / or in a different heading in any manner.
[0024] In the description of embodiments of the present disclosure, the term "includes" and its derivatives are to be interpreted as including without limitation. The term "based on" is to be interpreted as "based, at least in part, on." The term "one embodiment" or "an embodiment" are to be interpreted as "at least one embodiment." The term "some embodiments" are to be interpreted as "at least some embodiments." Other explicit and implicit definitions can also be included below. The terms "first," "second," etc. can refer to different or same objects. Other explicit and implicit definitions can also be included below.
[0025] As briefly mentioned above, a conventional dual power transfer switch is coupled to a normal power source and a backup power source, which can quickly disconnect the normal power source during abnormal period of the normal power source and switch to the backup power source for power supply, so as to ensure continuous power supply of the power consuming device. In order to ensure electrical safety of the dual power transfer switch when switching power sources, the dual power transfer switch needs to interlock a pair of drive assemblies respectively connected with the normal power source and the backup power source, so that the first drive assembly and the second drive assembly in the pair of drive assemblies cannot be closed at the same time. The interlocking device of the conventional dual power transfer switch has the disadvantages of complex structure and high production cost.
[0026] The interlocking mechanism for a switch device and the switch device provided according to the present disclosure are provided to solve or at least partially solve the above-mentioned problems and other potential problems in the conventional solutions. The interlocking mechanism provided according to the present disclosure is arranged between a pair of drive assemblies of the switch device and is rotatably connected with a support of the switch device through a rotating hole. A pair of drive planes of the interlocking mechanism are respectively coupled with corresponding drive assemblies. Thus, if the first drive assembly in the pair of drive assemblies performs a closing operation, the drive shaft of the first drive assembly can be in contact with the first drive plane in the pair of drive planes of the interlocking mechanism and push the interlocking mechanism to rotate to a first interlocking position. In the first interlocking position, the second drive plane in the interlocking mechanism, which is different from the first drive plane, can be rotated to the closing stroke of the second drive assembly, so that the second drive plane can block the closing of the second drive assembly, that is, the interlocking mechanism can limit only one drive mechanism of the switch device to be kept in the closed state at the same time, thereby realizing interlocking of the switch device.
[0027] Figure 1 The internal structure of the switch device according to some embodiments of the present disclosure is shown. As shown in Figure 1 The switch device generally includes a support, a pair of drive assemblies 5 coupled to the support, and an interlocking device arranged between the pair of drive assemblies 5. The pair of drive assemblies 5 are respectively coupled with two independent power sources (for example, a normal power source and a backup power source), and the drive assemblies 5 can be rotated between a closed position and an open position. In this way, the corresponding power source is turned on or off between the power consuming device. The interlocking mechanism is arranged between the pair of drive assemblies 5 and is adapted to interlock the pair of drive assemblies 5, so as to ensure that the two drive assemblies 5 cannot be in the closed state at the same time.
[0028] The interlocking mechanism generally comprises a main body 1, a rotating hole 2 formed in the main body 1, and a pair of driving portions 3 arranged on opposite sides of the main body 1. The driving portions 3 are adapted to be coupled with a pair of driving assemblies 5 of the switch device respectively, so as to be pushed by a driving shaft 51 of one of the driving assemblies 5 during the closing of the driving assembly 5, to cause the main body 1 to displace (e.g., rotate around the rotating hole 2), so as to cause the other driving portion 3 to organize the other driving assembly 5 to perform the closing action.
[0029] The main body 1 is arranged between the pair of driving assemblies 5 of the switch device, and is rotatably connected with the support through the rotating hole 2. In some embodiments, the support of the switch device comprises a rotating shaft, and the rotating hole 2 is at least partially wrapped around the outside of the rotating shaft, so that the support can relatively rotate with the inner side wall of the rotating hole 2, and the main body 1 can rotate around the axis of the rotating hole 2 relative to the support.
[0030] In some embodiments, the driving assembly 5 comprises a spring mechanism 52, which can store energy under the action of a power source such as a motor, and cause the driving mechanism to rotate to a critical point, so that after the switch device releases the driving assembly 5, the spring mechanism 52 can quickly move the driving assembly 5 to the corresponding position (e.g., the closing position or the opening position).
[0031] In some embodiments, the main body 1 is a plate structure or a sheet structure as a whole, and the axis of the rotating hole 2 is arranged perpendicular to the plane of the main body 1. In some embodiments, the main body 1 can be a long strip as a whole, and in some other embodiments, the main body 1 can also be at least partially circular or elliptical, etc.
[0032] The driving portion 3 is coupled at the edge of the main body 1, and is adapted to extend towards the driving shaft 51 of the corresponding driving assembly 5. The driving portion 3 comprises a driving plane 31 arranged on the side of the driving shaft 51 of the corresponding driving assembly 5 towards the closing position. In some embodiments, the driving portion 3 is coupled at the edge of the main body 1 and extends in the radial direction of the rotating hole 2, and the driving plane 31 can be the outer surface of the protrusion towards the driving shaft 51 of the corresponding driving assembly 5.
[0033] In some embodiments, the main body 1 and the pair of driving portions 3 of the interlocking mechanism can be integrally formed. For example, the interlocking mechanism can be integrally formed by injection molding, and the interlocking mechanism can also be obtained by cutting and polishing from a complete profile. In some other embodiments, the main body 1 and the pair of driving portions 3 can also be separately formed, and the main body 1 and the pair of driving portions 3 can be connected and fixed by means such as fasteners or buckles, etc.
[0034] Figures 2A-2C The schematic diagrams of the working states of the interlocking mechanism according to some embodiments of the present disclosure are shown respectively. Among them Figure 2AIn the first driving assembly 501 is in the open position, and the second driving assembly 502 is in the closed position. In this state, the interlocking mechanism is in the second interlocking state, i.e. the second interlocking assembly can restrict the first driving assembly 501 to perform the closing operation. Figure 2B In the second driving assembly 502 is in the open position, and the first driving assembly 501 is preparing to perform the closing operation. In this state, the interlocking mechanism can be rotated to the first interlocking position under the action of the first driving assembly 501. Figure 2C In the first driving assembly 501 is in the closed position, and the second driving assembly 502 is in the open position. In this state, the interlocking mechanism is in the first interlocking position, i.e. the interlocking mechanism can restrict the second driving assembly 502 to perform the closing operation.
[0035] Reference Figures 2A-2C If the first driving assembly 501 of the pair of driving assemblies 5 performs the closing operation, the first driving assembly 501 is rotated from the open position to the closed position. Thus, the driving shaft 51 of the first driving assembly 501 contacts the first driving plane 31 of the corresponding driving part 3, and pushes the main body and the pair of driving parts 3 to rotate around the rotating hole 2. At this time, the driving plane 31 of the second driving part 3 can prevent the second driving assembly 502 from rotating to the closed position.
[0036] Similarly, if the second driving assembly 502 performs the closing operation, the interlocking mechanism is rotated to the second interlocking position under the action of the second driving assembly 502, so that the interlocking mechanism can restrict the first driving assembly 501 to close. Thus, the interlocking of the switch device is realized, so that the simultaneous closing of the first driving assembly 501 and the second driving assembly 502 due to the misoperation of the switch device can be avoided, and the safety of the switch device is improved.
[0037] Reference Figure 1 In some embodiments, the interlocking mechanism further comprises a pair of accommodation holes 11 formed in the main body 1 and at least partially penetrating through opposite sides of the main body 1. The pair of accommodation holes 11 are respectively arranged on both sides of the rotating hole 2 and are adapted to partially accommodate the driving assemblies 5 respectively. In this way, the interference of the interlocking mechanism to the driving assemblies 5 during the rotation of the driving assemblies 5 in the closed position and the open position can be avoided.
[0038] In some embodiments, the cross section of the accommodation hole 11 perpendicular to the axis of the rotating hole 2 is arranged to be partially arc-shaped to correspond to the rotation track of the driving assembly 5. The arrangement of the accommodation hole 11 can optimize the spatial layout in the switch device and reduce the volume occupation of the interlocking mechanism in the switch device.
[0039] Figure 3 The internal structure of the switch device according to some other embodiments of the present disclosure is shown. As Figure 3As shown, the switch device further comprises a buffer 6 coupled to the bracket and adapted to be triggered during the operation of the pair of drive assemblies 5 of the switch device to partially absorb the kinetic energy when the drive assemblies 5 perform the closing or opening operation. Specifically, the buffer 6 comprises a buffer arm 61 rotatably coupled to the bracket and kept in the same plane with the locking mechanism. The locking mechanism is provided with a buffer portion 4 on the side facing the buffer arm 61. The buffer arm 61 can be rotated relative to the bracket by the pushing of the locking mechanism. The side of the buffer arm 61 away from the locking mechanism is further provided with an energy-absorbing member 62, one end of which is coupled to the bracket and the other end is coupled to the buffer arm 61.
[0040] In some embodiments, the buffer portion 4 can comprise a buffer groove formed in the edge of the main body, and the buffer groove is arranged opposite to the bottom wall of the opening towards the rotating hole 2. The side of the buffer arm 61 towards the main body is provided with a protrusion 63. During the closing of one of the drive assemblies 5 of the switch device, the locking mechanism is rotated, and the protrusion 63 is relatively displaced with the buffer groove. The protrusion 63 moves from inside the buffer groove to the edge of the buffer groove, and then the buffer arm 61 is compressed by the pushing action of the buffer groove corner on the buffer arm 61, so as to compress the energy-absorbing member 62, thereby absorbing the kinetic energy during the operation of the drive assembly 5, thereby reducing the impact of the moving contact on the static contact during closing.
[0041] Figures 4A-4C A schematic diagram of the working state of the buffer according to some embodiments of the present disclosure is shown. Among them Figure 4A The first drive assembly 501 and the second drive assembly 502 are shown in the opening position respectively, and the first drive assembly 501 starts to swing to the closing position. Figure 4B The intermediate state of the first drive assembly 501 moving from the opening position to the closing position is shown, during which the locking mechanism is pushed by the drive shaft 51 of the first drive assembly 501 to rotate to the first interlocking position. At this time, the protrusion 63 of the buffer arm 61 enters the inside of the buffer groove. Figure 4C The first drive assembly 501 is shown rotating to the closing position, at which time the protrusion 63 of the buffer arm 61 contacts with the corner of the buffer groove to make the buffer member be squeezed to rotate, thereby compressing the energy-absorbing member 62 to absorb the kinetic energy of the operation of the first drive assembly 501.
[0042] In some embodiments, a chamfer is formed on the end of the protrusion 63 away from the buffer arm 61, and in some other embodiments, chamfers are also formed on the two corners of the buffer groove. In this way, the impact of the buffer groove and the protrusion 63 during the operation of the drive assembly 5 can be reduced, so that the buffering effect of the buffer 6 is more smooth.
[0043] In some embodiments, the energy absorbing member 62 can be a compression spring, and the driving arm can press the compression spring to convert the kinetic energy of the driving assembly 5 into the internal energy of the compression of the spring, thereby reducing the speed of the driving assembly 5. In some other embodiments, the energy absorbing member 62 can also be a buffer cylinder or a flexible member, etc.
[0044] Figure 5 The overall structure of the buffer arm 61 according to some embodiments of the present disclosure is shown in the schematic diagram. As shown, the distance L1 from the rotation point of the buffer arm 61 to the protrusion 63 is less than the distance L2 from the rotation point to the energy absorbing member 62. In this way, the buffer arm 61 as a whole forms a force-saving lever, so that the compression stroke of the energy absorbing member 62 can be improved, and the impact generated during the operation of the driving assembly 5 can be better buffered. Figure 5
[0045] The above has described the implementations of the present disclosure, and the above description is exemplary, not exhaustive, and is not limited to the disclosed implementations. Many modifications and changes are obvious to those skilled in the art without departing from the scope and spirit of the described implementations. The choice of terms used herein is intended to best explain the principles of the implementations, practical application, or improvement to the technology in the market, or to enable other ordinary skilled in the art to understand the various implementations disclosed herein.
Claims
1. An interlocking mechanism for a switching device, characterized in that, Comprising: a body portion (1) disposed between a pair of drive assemblies (5) of a switchgear; a rotation hole (2) formed through a middle portion of the body portion (1) and adapted to have a rotation shaft of a bracket of the switchgear coupled therein to allow the body portion (1) to be rotatably connected to the bracket; and a pair of drive portions (3) respectively formed on both sides of the body portion (1) towards the pair of drive assemblies (5) and adapted to extend towards a drive shaft (51) of a corresponding drive assembly (5), and each drive portion (3) of the pair of drive portions (3) comprises: a drive plane (31) disposed on a side of the corresponding drive shaft (51) towards a closing direction, and wherein the drive plane (31) of a first drive portion of the pair of drive portions (3) is arranged to be pushed by the drive shaft (51) of a first drive assembly (5) of the pair of drive assemblies during closing of the first drive assembly (5) to rotate the body portion (1) to cause the drive plane (31) of a second drive portion (3) of the pair of drive portions (3) to resist a closing action of a second drive assembly (5) of the pair of drive assemblies (5).
2. The interlocking mechanism of claim 1, wherein, the drive portion (3) is arranged to extend from the body portion (1) in a radial direction of the rotation hole (2), and wherein the drive plane (31) is an outer surface of the drive portion (3) in an extending direction.
3. The interlocking mechanism of claim 1, wherein, Further comprising: a pair of accommodation holes (11) respectively formed on both sides of the body portion (1) to allow a coupling portion of a corresponding drive assembly (5) to at least partially pass through.
4. The interlocking mechanism of claim 1, wherein, the body portion (1) and the pair of drive portions (3) are integrally formed.
5. A switching device, characterized by Comprising: a bracket; a pair of drive assemblies (5) coupled to the bracket and adapted to rotate between a closing position and an opening position; and the interlocking mechanism according to any one of claims 1-4.
6. The switching device of claim 5, wherein The interlocking mechanism further comprises: at least one buffer portion (4) formed on an edge of a body portion (1) of the interlocking mechanism in a radial direction of a rotation hole (2); and The switchgear further comprises: at least one buffer (6) coupled to the bracket to be driven by the at least one buffer portion (4) during closing of the drive assembly (5) to absorb kinetic energy of the drive assembly (5), the buffer (6) comprising: a buffer arm (61) rotatably coupled to the bracket and adapted to be pushed by the buffer portion (4) to rotate during closing of the drive assembly (5); and an energy absorbing member (62) disposed on a side of the buffer arm (61) away from the body portion (1) and adapted to be compressed to absorb kinetic energy of rotation of the buffer arm (61) during closing of the drive assembly (5).
7. The switching device of claim 6, wherein The energy absorbing member (62) is a compression spring.
8. The switching device of claim 7, wherein The buffer portion (4) comprises: a buffer groove formed on an edge of the body portion (1) in the radial direction of the rotation hole (2), and wherein the buffer (6) comprises: a protrusion (63) disposed on a side of the buffer arm (61) towards the body portion (1) and protruding towards the body portion (1).
9. The switching device of claim 8, wherein, An end of the protrusion (63) away from the buffer arm (61) has a chamfer.
10. The switching device of claim 8, wherein The distance (L1) from the rotation point of the support rotating on the buffer arm (61) to the protrusion (63) is less than the distance (L2) from the rotation point to the energy absorbing member (62).