Elastic switch structure

Abstract

The utility model discloses a kind of elastic switch structures, it is related to electrical switch technical field. Including switch shell, still include: structure frame, embedded and clamped in the support structure formed in switch shell inside;Two groups of static contact point components, fixedly installed in the bottom of structure frame;Two groups of dynamic contact point components, it is opposite to set with static contact point component, and can move between conducting position and disconnected position;Driving mechanism, sliding installation is in the side wall of structure frame and can slide along the height direction of structure frame to resist dynamic contact point component;Switch component, it is connected with driving mechanism and set on structure frame;Permanent magnet arc extinguishing component, it is set around static contact point component and dynamic contact point component.The elastic switch structure of the utility model by integrating permanent magnet arc extinguishing component, in breaking moment, arc is quickly blown into arc extinguishing grid using Lorentz force, effectively lengthens, cools and extinguishes arc, greatly reduces the ablation to contact, significantly prolongs the electric life of switch.

Description

Technical Field

[0001] This utility model relates to the field of electrical switch technology, specifically to a flexible switch structure. Background Technology

[0002] In fields such as power systems, industrial automation, and new energy vehicles, switching equipment is a core component for controlling circuit continuity. Traditional switches, especially in medium-to-high voltage and high-current applications, face severe technical challenges. The most significant problem is electric arcing. When switch contacts separate under load, the current cannot be interrupted instantaneously, resulting in a high-temperature electric arc in the contact gap. This arcing not only burns the contacts and shortens the switch's electrical life but can also lead to short circuits, equipment damage, and even safety accidents.

[0003] To address the arcing problem, various arc-extinguishing structures have emerged in existing technologies, such as magnetic blowout arc extinguishing and grid-plate arc extinguishing. However, these arc-extinguishing structures are often disconnected from the design of the switch's drive mechanism, resulting in a complex and bulky overall structure, or the drive mechanism's response speed is insufficient to achieve the optimal effect of the arc-extinguishing structure. Furthermore, many switch drive mechanisms suffer from numerous transmission links, easy wear, and inaccurate positioning, affecting the switch's long-term reliability and operational feel.

[0004] Therefore, there is an urgent need to develop a new type of flexible switch structure that can integrate efficient magnetic blowout arc extinguishing technology with a precise and reliable drive mechanism to achieve fast, safe, and long-life circuit switching operations. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a flexible switch structure, aiming to solve problems such as poor arc extinguishing effect, low reliability of drive mechanism, and complex overall structure in existing technologies.

[0006] To achieve the above objectives, this utility model provides the following technical solution: A resilient switch structure includes a switch housing and further includes: The structural frame is embedded and snapped into the inside of the switch housing to form a support structure; Two sets of stationary contact assemblies are fixedly installed at the bottom of the structural frame; Two sets of moving contact assemblies are arranged opposite to the stationary contact assembly and can move between the on and off positions; The drive mechanism is slidably mounted on the side wall of the structural frame and can slide along the height direction of the structural frame to abut against the moving contact assembly, providing it with a driving force to move from the disconnected position to the open position; The switch assembly is mounted on the structural frame and connected to the drive mechanism; The permanent magnet arc extinguishing component is disposed around the stationary contact component and the moving contact component to generate a magnetic field intersecting the direction of the expected arc current, so as to apply electromagnetic force to the generated arc when it is broken, thereby realizing magnetic blowout arc extinguishing.

[0007] This invention's elastic switch structure integrates a permanent magnet arc-extinguishing component. At the moment of disconnection, the Lorentz force rapidly blows the arc into the arc-extinguishing grid, effectively lengthening, cooling, and extinguishing the arc, greatly reducing contact erosion and significantly extending the switch's electrical life. The drive mechanism, combining a cam and an elastic component, achieves precise positioning between two stable "disconnect" and "conduct" positions. During operation, the knob drives the cam to rotate, causing the drive arm to rise and fall. When the latch falls into the contact groove under spring pressure, it provides a clear "click" feel and ensures constant contact pressure, preventing loose connections. The moving contact component uses a beryllium copper spring as an elastic conductive bridge. After the drive mechanism is released, the spring quickly resets due to its own elasticity, causing the moving and stationary contacts to separate at high speed. This rapid disconnection characteristic, combined with the magnetic blow-out arc extinguishing, further enhances the reliability of arc extinguishing and operational safety.

[0008] Preferably, the moving contact assembly includes an elastic conductive bridge and two moving contacts disposed at both ends of the elastic conductive bridge, and the stationary contact assembly includes two stationary contacts corresponding to the two moving contacts respectively.

[0009] Preferably, the elastic conductive bridge is a beryllium copper spring sheet, which, in its elastically free and extended state, drives the moving contact away from the stationary contact.

[0010] Preferably, the driving mechanism includes two driving arms with columnar grooves, and a sliding column is fixedly installed at the bottom of the structural frame, with the driving arms slidably inserted into the outer wall of the sliding column.

[0011] Preferably, the switch assembly includes a support shaft disposed on the side wall of the structural frame, a knob connected to one end of the support shaft, and a cam connected to the other end of the support shaft; the outer wall of the cam is provided with an arc-shaped groove, and the top end of the drive arm slides in cooperation with the arc-shaped groove through a slider.

[0012] Preferably, the outer wall of the cam has two abutment grooves, and the switch assembly further includes an elastic component disposed on the side wall of the structural frame.

[0013] Preferably, the elastic component includes a guide rod that is slidably inserted into the side wall of the structural frame, one end of the guide rod is fixedly connected to a clamp, and the outer wall of the guide rod is also fitted with a spring, the two ends of the spring being fixedly connected to the clamp and the structural frame respectively.

[0014] Preferably, the switch housing is composed of an insulating bottom shell and an insulating end cap connected by bolts, and the inner side wall of the insulating bottom shell is provided with plastic buckles for fixing the structural frame.

[0015] Preferably, the magnetic field generated by the permanent magnet arc extinguishing assembly is perpendicular to the current direction between the stationary contact assembly and the moving contact assembly, and the permanent magnet arc extinguishing assembly includes permanent magnets installed on both sides of the structural frame and an arc extinguishing grid located in the middle of the structural frame.

[0016] This invention provides a flexible switch structure. It has the following advantages: 1. Excellent arc extinguishing performance and long electrical life: By integrating permanent magnet arc extinguishing components, the arc is quickly blown into the arc extinguishing grid by Lorentz force at the moment of disconnection, which effectively lengthens, cools and extinguishes the arc, greatly reduces the erosion of the contacts and significantly extends the electrical life of the switch.

[0017] 2. Precise and reliable drive mechanism with clear tactile feedback: The drive mechanism, combining a cam and elastic components (clip, spring), achieves precise positioning between two stable "disconnect" and "conduct" positions. During operation, the knob drives the cam to rotate, causing the drive arm to rise and fall accordingly. When the clip falls into the contact groove under the action of the spring, it provides a clear "click" feel and ensures constant contact pressure, avoiding incomplete connection.

[0018] 3. Fast breaking speed and high safety: The moving contact assembly uses a beryllium copper spring as an elastic conductive bridge. After the drive mechanism is released, the spring quickly resets due to its own elasticity, causing the moving and stationary contacts to separate at high speed. This rapid breaking characteristic, combined with magnetic blowout arc extinguishing, further improves the reliability of arc extinguishing and the safety of operation. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the flexible switch structure described in this utility model; Figure 2 This is a schematic diagram showing the disassembled structure of the elastic switch structure described in this utility model; Figure 3 This is a schematic diagram of the structure frame and switch assembly described in this utility model; Figure 4 This is a schematic diagram of the structure frame and permanent magnet arc extinguishing assembly described in this utility model; Figure 5 This is a side view of the structural frame described in this utility model.

[0020] In the diagram, 1. Switch housing; 2. Structural frame; 21. Sliding column; 3. Static contact assembly; 4. Moving contact assembly; 41. Flexible conductive bridge; 5. Drive mechanism; 51. Drive arm; 6. Switch assembly; 61. Knob; 62. Cam; 63. Arc-shaped slide; 64. Groove; 65. Guide rod; 66. Clip; 67. Spring; 7. Permanent magnet arc extinguishing assembly; 71. Permanent magnet; 72. Arc extinguishing grid. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model. Example

[0022] like Figure 1-5 As shown, this embodiment of the utility model provides a resilient switch structure, including a switch housing 1, and further comprising: Structural frame 2 is embedded and snapped into the inside of switch housing 1 to form a support structure; Two sets of stationary contact assemblies 3 are fixedly installed at the bottom of the structural frame 2; Two sets of moving contact assemblies 4 are arranged opposite to the stationary contact assembly 3 and can move between the on and off positions; The drive mechanism 5 is slidably mounted on the side wall of the structural frame 2 and can slide along the height direction of the structural frame 2 to abut against the moving contact assembly 4 and provide it with the driving force to move from the disconnected position to the open position; The switch assembly 6 is mounted on the structural frame 2 and connected to the drive mechanism 5; The permanent magnet arc extinguishing component 7 is disposed around the stationary contact component 3 and the moving contact component 4 to generate a magnetic field that intersects with the direction of the expected arc current, so as to apply electromagnetic force to the generated arc when it is broken, thereby achieving magnetic blowout arc extinguishing.

[0023] Because the elastic switch structure of this utility model has the above-mentioned structure, by integrating the permanent magnet arc extinguishing component 7, the arc is quickly blown into the arc extinguishing grid 72 by Lorentz force at the moment of disconnection, effectively lengthening, cooling and extinguishing the arc, greatly reducing the erosion of the contacts and significantly extending the electrical life of the switch; the drive mechanism combining the cam 62 and the elastic component achieves precise positioning of the two stable positions of "disconnection" and "conduction". During operation, the knob 61 drives the cam 62 to rotate, and the drive arm 51 rises and falls accordingly. When the latch 66 falls into the contact groove under the action of the spring 67, it provides a clear "click" feeling and ensures constant contact pressure, avoiding poor connection; the moving contact component 4 uses a beryllium copper spring as an elastic conductive bridge. After the drive mechanism 5 is released, the spring quickly resets by its own elasticity, causing the moving and stationary contacts to separate at high speed. This rapid disconnection characteristic, combined with the magnetic blow-out arc extinguishing, further improves the reliability of arc extinguishing and the safety of operation.

[0024] Furthermore, in another embodiment, the moving contact assembly 4 includes an elastic conductive bridge 41 and two moving contacts disposed at both ends of the elastic conductive bridge 41, and the stationary contact assembly 3 includes two stationary contacts corresponding to the two moving contacts respectively.

[0025] The elastic conductive bridge 41 is a beryllium copper spring. When the elastic conductive bridge 41 is in an elastic and freely extended state, it drives the moving contact away from the stationary contact.

[0026] Because the elastic switch structure of this utility model has the above structure, the beryllium copper spring has good elastic potential energy and conductivity, which makes it easy to automatically reset after the extrusion force is lost, so as to achieve the purpose of automatic power cut-off.

[0027] Furthermore, in another embodiment, the drive mechanism 5 includes two drive arms 51 with columnar grooves, and a sliding column 21 is fixedly installed at the bottom of the structural frame 2, with the drive arms 51 slidably inserted into the outer wall of the sliding column 21.

[0028] The switch assembly 6 includes a support shaft disposed on the side wall of the structural frame 2, a knob 61 connected to one end of the support shaft, and a cam 62 connected to the other end of the support shaft; the outer wall of the cam 62 is provided with an arc-shaped groove 63, and the top end of the drive arm 51 slides in cooperation with the arc-shaped groove 63 through a slider.

[0029] The outer wall of the cam 62 has two abutting grooves 64, and the switch assembly 6 also includes an elastic component disposed on the side wall of the frame 2.

[0030] The elastic component includes a guide rod 65 that is slidably inserted into the side wall of the structural frame 2. One end of the guide rod 65 is fixedly connected to a clip 66. A spring 67 is also fitted on the outer wall of the guide rod 65. The two ends of the spring 67 are fixedly connected to the clip 66 and the structural frame 2, respectively.

[0031] Because the elastic switch structure of this utility model has the above structure, when the knob 61 starts to rotate from the "disconnect" position, the locking head 66 slides out from the first abutting groove 64 on the cam 62 under the push of the spring 67. As the cam 62 continues to rotate, its contour pushes the drive arm 51 to slide down smoothly. The bottom end of the drive arm 51 presses down against the elastic conductive bridge 41 of the moving contact assembly 4, causing it to undergo elastic deformation. When the knob 61 rotates to the "conduct" position, the locking head 66 falls back into the second abutting groove 64 on the cam 62 under the action of the spring 67, making a "click" sound and achieving position locking. At this time, the moving contacts at both ends of the elastic conductive bridge 41 are in stable contact with the stationary contact assembly 3 below, and the circuit is connected. When it is necessary to disconnect the circuit, the operator rotates the knob 61 counterclockwise, the cam 62 rotates in the opposite direction, and its contour releases the pressure on the drive arm 51.

[0032] Furthermore, in another embodiment, the switch housing 1 is composed of an insulating bottom shell and an insulating end cap connected by bolts, and the inner side wall of the insulating bottom shell is provided with plastic buckles for fixing the structural frame 2.

[0033] Because the elastic switch structure of this utility model has the above structure, and the structure frame 2 is fixed by plastic buckles, it can achieve the effect of quick assembly. Furthermore, the switch housing 1 is made of insulating material, thereby avoiding the risk of leakage.

[0034] Furthermore, in another embodiment, the magnetic field generated by the permanent magnet arc extinguishing assembly 7 is perpendicular to the current direction between the stationary contact assembly 3 and the moving contact assembly 4. The permanent magnet arc extinguishing assembly 7 includes permanent magnets 71 installed on both sides of the structural frame 2 and an arc extinguishing grid 72 located in the middle of the structural frame 2.

[0035] Because the elastic switch structure of this utility model has the above structure, if there is current in the circuit at the moment the moving and stationary contacts separate, a high-temperature electric arc will be generated. At this time, the vertical magnetic field generated by the permanent magnets 71 set on both sides of the contact, such as in the direction of B, immediately generates a Lorentz force in the direction of F on the current in the arc, such as in the direction of I. Under the action of the Lorentz force, the arc is quickly blown outward and guided into the arc-extinguishing grid 72 in the middle. The arc is cut into multiple short arcs in series in the metal arc-extinguishing grid 72, and at the same time, it exchanges heat with the grid wall, and is quickly cooled and extinguished.

[0036] Unless otherwise specified, in this utility model, terms such as "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model 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, the terms used to describe orientation or positional relationships in this utility model are for illustrative purposes only and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood in conjunction with the accompanying drawings and according to the specific circumstances.

[0037] Unless otherwise expressly specified and limited, the terms "set up," "connected," and "linked" in this utility model should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0038] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Any simple modifications or equivalent changes made to the above embodiments based on the technical essence of the present utility model shall fall within the protection scope of the present utility model.

Claims

1. A resilient switch structure, comprising a switch housing (1), characterized in that: Also includes: The structural frame (2) is embedded and snapped into the inside of the switch housing (1) to form a support structure; Two sets of stationary contact assemblies (3) are fixedly installed at the bottom of the structural frame (2); Two sets of moving contact assemblies (4) are arranged opposite to the stationary contact assembly (3) and can move between the on position and the off position; The drive mechanism (5) is slidably mounted on the side wall of the structural frame (2) and can slide along the height direction of the structural frame (2) to abut against the moving contact assembly (4) to provide it with a driving force to move from the disconnected position to the open position; The switch assembly (6) is mounted on the structural frame (2) and connected to the drive mechanism (5); The permanent magnet arc extinguishing component (7) is disposed around the stationary contact component (3) and the moving contact component (4) to generate a magnetic field that intersects with the direction of the expected arc current, so as to apply electromagnetic force to the generated arc when it is broken, thereby achieving magnetic blowout arc extinguishing.

2. The resilient switch structure according to claim 1, characterized in that: The moving contact assembly (4) includes an elastic conductive bridge (41) and two moving contacts disposed at both ends of the elastic conductive bridge (41). The stationary contact assembly (3) includes two stationary contacts corresponding to the two moving contacts respectively.

3. The resilient switch structure according to claim 2, characterized in that: The elastic conductive bridge (41) is a beryllium copper spring sheet. When the elastic conductive bridge (41) is in an elastic and freely extended state, it drives the moving contact away from the stationary contact.

4. The resilient switch structure according to claim 1, characterized in that: The drive mechanism (5) includes two drive arms (51) with columnar grooves. A sliding column (21) is fixedly installed at the bottom of the structural frame (2). The drive arms (51) are slidably inserted into the outer wall of the sliding column (21).

5. The resilient switch structure according to claim 4, characterized in that: The switch assembly (6) includes a support shaft set on the side wall of the structural frame (2), a knob (61) connected to one end of the support shaft, and a cam (62) connected to the other end of the support shaft; the outer wall of the cam (62) is provided with an arc-shaped groove (63), and the top end of the drive arm (51) slides in cooperation with the arc-shaped groove (63) through a slider.

6. The resilient switch structure according to claim 5, characterized in that: The outer wall of the cam (62) has two abutting grooves (64), and the switch assembly (6) also includes an elastic component disposed on the side wall of the frame (2).

7. The resilient switch structure according to claim 6, characterized in that: The elastic component includes a guide rod (65) that is slidably inserted into the side wall of the structural frame (2). One end of the guide rod (65) is fixedly connected to a clip (66). The outer wall of the guide rod (65) is also fitted with a spring (67). The two ends of the spring (67) are fixedly connected to the clip (66) and the structural frame (2) respectively.

8. The resilient switch structure according to claim 1, characterized in that: The switch housing (1) is composed of an insulating bottom shell and an insulating end cover connected by bolts. The inner side wall of the insulating bottom shell is provided with plastic buckles for fixing the structural frame (2).

9. The resilient switch structure according to claim 1, characterized in that: The magnetic field generated by the permanent magnet arc extinguishing assembly (7) is perpendicular to the current direction between the static contact assembly (3) and the moving contact assembly (4). The permanent magnet arc extinguishing assembly (7) includes permanent magnets (71) installed on both sides of the structural frame (2) and an arc extinguishing grid (72) located in the middle of the structural frame (2).

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