Track power take-off switch

Abstract

This utility model relates to the field of lighting driver power supply technology and discloses a high-voltage switch for a track power supply, including a rotating base, a cam structure and a limiting structure disposed on the rotating base, a neutral wire power take-off component arranged beside the cam structure, and N live wire power take-off components arranged beside the cam structure. The rotating base rotates to form a power-off position and N power-on positions, where N is an integer greater than 1. The rotating base is used to drive the cam structure to rotate. When in any power-on position, the cam structure drives the neutral wire power take-off component and one of the live wire power take-off components to pop outward; when in the power-off position, the neutral wire power take-off component and all the live wire power take-off components retract inward. By arranging the neutral wire power take-off component and the live wire power take-off component beside the cam structure, and controlling the pop-out and retraction of the power take-off component by the rotating base driving the cam structure, the overall structure is more compact, shortening the overall length of the driver power supply box.

Description

Technical Field

[0001] This utility model relates to the field of lighting driver power supply technology, and in particular to a high-voltage switch for track power supply. Background Technology

[0002] In the field of modern lighting, track lights are widely used in commercial spaces, exhibition halls, and other venues due to their advantages such as convenient installation and flexible position adjustment. Track lights generally consist of a driver power supply box (power converter) and a light body connected to its bottom. Their power supply relies on conductive metal strips on both sides inside the track. One part is a high-voltage metal strip responsible for providing high voltages such as 110V / 220V / 380V, and the other part is a low-voltage metal strip responsible for providing low voltages such as 10V / 12V / 24V / 36V. The driver power supply box is equipped with corresponding switches for high-voltage and low-voltage applications.

[0003] Existing high-voltage power switches, taking the existing patent (CN216307724U) as an example, typically include a rail power connector and a phase adjustment mechanism. When the high-voltage power switch is turned on, the rotating conductive plates (if four are provided) on the rail power connector will all open outwards, extending into the grooves of the rail and connecting with the corresponding high-voltage metal strips. In practical applications, there are several situations: If there are four high-voltage metal strips in the rail, namely three live wire metal strips and one neutral wire metal strip, and the four rotating conductive plates are electrically connected to the three live wire metal strips and the one neutral wire metal strip respectively, then if all three live wire metal strips are connected, the phase adjustment mechanism can be set to any position to successfully draw power; if only one of the three live wire metal strips is connected, the phase adjustment mechanism needs to be adjusted to the appropriate position to successfully draw power. In addition, due to different track specifications, if there are only two high-voltage metal strips in the track, namely one live wire metal strip and one neutral wire metal strip, only two of the four rotating conductive plates can be electrically connected to one live wire metal strip and one neutral wire metal strip. Similarly, the phase adjustment mechanism needs to be adjusted to the appropriate position in order to successfully draw power.

[0004] This method of power extraction using fully open rotating conductive plates has significant drawbacks. Firstly, it requires a phase adjustment mechanism for effective power extraction, and this mechanism has numerous components, hindering cost reduction and production efficiency. Secondly, the power rail connector and electrode adjustment mechanism are typically arranged side-by-side within the power supply housing, occupying considerable space. This not only limits space utilization optimization but also makes it difficult to shorten the overall length of the drive power supply housing, thus negatively impacting the product's market competitiveness.

[0005] It is evident that existing technologies still need improvement and enhancement. Utility Model Content

[0006] In view of the shortcomings of the prior art, the purpose of this utility model is to provide a high-voltage switch for track power supply, which aims to eliminate the need for a separate phase adjustment mechanism and integrate the power supply and adjustment functions into one unit, thereby shortening the overall length of the drive power supply box.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] A high-voltage switch for a rail power supply includes a rotating base, a cam structure and a limiting structure mounted on the rotating base, a neutral wire power take-off component arranged beside the cam structure, and N live wire power take-off components arranged beside the cam structure. The rotating base rotates to form a power-off position and N power-on positions, where N is an integer greater than 1. The rotating base drives the cam structure to rotate. When in any power-on position, the cam structure drives the neutral wire power take-off component and one of the live wire power take-off components to pop outward; when in the power-off position, the neutral wire power take-off component and all the live wire power take-off components retract inward.

[0009] As a further improvement to the above design, N is 3, and the three live wire power take-off components are a first live wire power take-off component, a second live wire power take-off component, and a third live wire power take-off component. The cam structure includes a first cam, a second cam, and a third cam connected sequentially from top to bottom. The first and second live wire power take-off components are located beside the first cam, and the first cam is used to drive the first and second live wire power take-off components outward one by one. The third live wire power take-off component is located beside the second cam, and the second cam is used to drive the third live wire power take-off component outward. The neutral wire power take-off component is located beside the third cam, and the third cam is used to drive the neutral wire power take-off component outward.

[0010] As a further improvement to the above design, both the first cam and the second cam are provided with an ejector tip; the third cam includes a central circle and ejector convexities concentrically arranged around the central circle, the ejector convexities being of a superior arc circle structure; in a top-view projection, the angle between the ejector tip of the first cam and the ejector tip of the second cam is 90°, and the ejector tip of the second cam does not overlap with the ejector convexities.

[0011] As a further improvement to the above design, the one power-off position and the three power-on positions are arranged in a circular array, and the limiting structure includes two symmetrically arranged fixed limiting blocks and two symmetrically arranged telescopic limiting blocks; the fixed limiting blocks and the telescopic limiting blocks are arranged in a circular array.

[0012] As a further improvement to the above design, the rotating seat includes an upper half seat and a lower half seat connected to each other. The cam structure is set on the upper half seat, and the fixed limiting block is set on the outer peripheral surface of the lower half seat. The top of the lower half seat is provided with a sliding groove to guide the telescopic limiting block to extend or retract. The backs of the two telescopic limiting blocks are connected by a spring.

[0013] As a further improvement to the above design, the edge of the snap-fit ​​end of the telescopic limiting block is chamfered to form a moving inclined surface.

[0014] As a further improvement to the above design, the telescopic limiting block has a positioning hole on its back for the spring to extend into, the slide groove has a vertical plate to support the spring, and the telescopic limiting block has an anti-slip-off function to prevent the telescopic limiting block from leaving the slide groove.

[0015] As a further improvement to the above design, the neutral wire power supply component and the live wire power supply component are metal conductive wire structures.

[0016] As a further improvement to the above design, the output ends of the neutral wire power take-off component and the live wire power take-off component are connected to conductive clamps, and the input ends form arc-shaped power take-off hooks. The first and second live wire power take-off components are distributed left and right, the third live wire power take-off component is located below the first live wire power take-off component, and the neutral wire power take-off component is located below the second live wire power take-off component. The first, second, third, and neutral wire power take-off components are clamped on the wire holder and their wiring direction is adjusted so that the output sections of the first, second, third, and neutral wire power take-off components are straight and arranged at vertical intervals.

[0017] As a further improvement to the above design, the neutral wire power supply component and the live wire power supply component are metal conductive sheet structures.

[0018] The beneficial effects of this utility model are as follows: The high-voltage power switch provided by this utility model integrates power supply and phase adjustment functions into one unit, eliminating the need for a separate phase adjustment mechanism. This reduces the number of parts, simplifies the product structure, and consequently lowers raw material costs, processing costs, and assembly costs during production. It also reduces the risk of failure due to increased parts, improving product stability and reliability. By arranging the neutral and live wire power supply components beside the cam structure, and controlling the pop-up and retraction of the power supply components through a rotating base driving the cam structure, the overall structure is more compact, reducing the space occupied in the power supply box. This optimizes space utilization, making it possible to shorten the overall length of the drive power supply box, which is beneficial for expanding the product's appearance design and installation scenarios, and enhancing the product's market competitiveness. Attached Figure Description

[0019] Figure 1 This is a schematic diagram showing the high-voltage switch provided by this utility model installed inside the power supply box.

[0020] Figure 2 A perspective view showing the cam structure and limit structure mounted on the rotating base.

[0021] Figure 3 This is a schematic diagram of the limiting structure.

[0022] Figure 4 A schematic diagram of a switch for drawing high-voltage electricity being assembled into a power supply box.

[0023] Figure 5 This is an assembly diagram of the drive power supply box and the track.

[0024] Key component symbols: 1-Rotating seat, 11-Upper half seat, 12-Lower half seat, 13-Rotating slot, 14-Shift mark, 15-Snap ring, 2-Cam structure, 21-First cam, 22-Second cam, 23-Third cam, 24-Ejector tip, 25-Ejector round protrusion, 3-Limiting structure, 31-Telescopic limit block, 311-Auxiliary slope, 312-Anti-slip shoulder, 313-Positioning hole 32-Fixed limit block, 33-Slide groove, 34-Spring, 35-Vertical plate, 41-First live wire power take-off component, 42-Second live wire power take-off component, 43-Third live wire power take-off component, 44-Neutral wire power take-off component, 51-Conductive clamp, 52-Arc-shaped power take-off hook, 53-Fixed wire holder, 6-Railway, 61-Live wire metal strip, 62-Neutral wire metal strip, 63-Anti-detachment clip, 7-Power supply box, 71-Gear number. Detailed Implementation

[0025] This utility model provides a high-voltage switch for a track power supply. To make the purpose, technical solution, and effects of this utility model clearer and more explicit, the following describes this utility model in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit the scope of protection of this utility model.

[0026] Please see Figures 1 to 5 This utility model provides a high-voltage switch for a track power supply, including a rotating base 1, a cam structure 2 and a limiting structure 3 disposed on the rotating base 1, a neutral wire power take-off component 44 arranged beside the cam structure 2 and N live wire power take-off components arranged beside the cam structure 2. The rotating base 1 rotates to form a power-off position and N power-on positions, where N is an integer greater than 1. The rotating base 1 is used to drive the cam structure 2 to rotate. When in any power-on position, the cam structure 2 drives the neutral wire power take-off component 44 and one of the live wire power take-off components to pop outward; when in the power-off position, the neutral wire power take-off component 44 and all the live wire power take-off components retract inward.

[0027] In fact, both the neutral wire power take-off component 44 and the live wire power take-off component are metal parts with good elastic deformation capability. The switching between the power-off position and N power-on positions is achieved by rotating the rotating base 1. When the rotating base 1 is in the power-off position, the shape of the cam structure 2 does not exert pressure on the neutral wire power take-off component 44 and the live wire power take-off component. Both the neutral wire power take-off component 44 and the live wire power take-off component retract inward to return to their natural state, completely separating from the high-voltage metal strip in the track 6, cutting off the power connection, and ensuring safe power disconnection.

[0028] When the rotating seat 1 rotates to any power-on position, the cam structure 2 rotates synchronously with the rotating seat 1. The change in its outer contour shape will generate a mechanical thrust on the corresponding live wire power take-off component. At the same time, the neutral wire power take-off component 44 is always kept in the pop-out state by the cam structure 2. At this time, the cam structure 2 drives the neutral wire power take-off component 44 and the corresponding live wire power take-off component to pop out of the outer shape and extend into the wire groove of the track 6, respectively contacting the neutral wire metal strip 62 and the target live wire metal strip 61 in the track 6, forming an electrical connection path and realizing power take-off.

[0029] Since the driver power box is inserted into the track 6 from bottom to top, the limiting structure 3 can cooperate with the anti-detachment locking position 63 in the track 6 to overcome the gravity of the driver power box and prevent the driver power box from falling off the track 6 during use, thus preventing damage to the driver power box and the lamp and injuries.

[0030] The high-voltage switch provided by this utility model integrates power supply and phase adjustment functions into one unit, eliminating the need for a separate phase adjustment mechanism. This reduces the number of parts, simplifies the product structure, and consequently lowers raw material, processing, and assembly costs during production. It also reduces the risk of malfunctions caused by increased parts, improving product stability and reliability. By arranging the neutral wire power supply component 44 and the live wire power supply component on the side of the cam structure 2, and controlling the pop-up and retraction of the power supply components by rotating the base 1, the overall structure is more compact, reducing the space occupied in the power supply box 7. This optimizes space utilization, making it possible to shorten the overall length of the drive power supply box, which is beneficial for expanding the product's appearance design and installation scenarios, and enhancing its market competitiveness.

[0031] Understandably, since the rotating base 1 has N power connection positions, the appropriate power connection position can be selected by rotating the rotating base 1 according to the actual number and distribution of the live wire metal strips 61 in the track 6, so that the corresponding live wire power-taking component connects to the live wire metal strip 61. This eliminates the need for a complicated debugging process and makes operation more convenient. Whether there are N live wire metal strips 61 or only one live wire metal strip 61 in the track 6, power can be drawn quickly and accurately, improving the product's applicability to different track 6 specifications.

[0032] In this embodiment, N is 3, and the three live wire power take-off components are a first live wire power take-off component 41, a second live wire power take-off component 42, and a third live wire power take-off component 43. The cam structure 2 includes a first cam 21, a second cam 22, and a third cam 23 connected sequentially from top to bottom. The first live wire power take-off component 41 and the second live wire power take-off component 42 are located beside the first cam 21. The first cam 21 is used to drive the first live wire power take-off component 41 and the second live wire power take-off component 42 outward one by one. The third live wire power take-off component 43 is located beside the second cam 22. The second cam 22 is used to drive the third live wire power take-off component 43 outward. The neutral wire power take-off component 44 is located beside the third cam 23. The third cam 23 is used to drive the neutral wire power take-off component 44 outward.

[0033] Specifically, when the high-voltage switch is in operation, it switches between the power-off position and three power-on positions by rotating the rotating base 1. When the rotating base 1 rotates, it drives the first cam 21, the second cam 22 and the third cam 23 to rotate synchronously.

[0034] When switching to the first power-on position, the contour shape of the first cam 21 changes, and its special structure applies a force to the first live wire power-taking component 41 on the side, causing the first live wire power-taking component 41 to pop outward. At the same time, the third cam 23 also rotates synchronously, and its contour displacement causes the neutral wire power-taking component 44 to pop outward. The popped-out first live wire power-taking component 41 and neutral wire power-taking component 44 contact the corresponding live wire metal strip 61 and neutral wire metal strip 62 in the track 6, respectively, to establish a strong electrical connection and realize power taking.

[0035] When the rotating seat 1 switches to the second power-on position, the first cam 21 continues to rotate. After the first live wire power take-off component 41 loses the force of the first cam 21, it will elastically deform and retract to reset, disconnecting from the corresponding live wire metal strip 61. Then, the contour displacement of the first cam 21 applies a force to the second live wire power take-off component 42, causing the second live wire power take-off component 42 to pop outward. At the same time, the third cam 23 maintains its effect on the neutral wire power take-off component 44, so that the neutral wire power take-off component 44 continues to be in contact with the neutral wire metal strip 62. At this time, the second live wire power take-off component 42 and the neutral wire power take-off component 44 cooperate to complete the power take-off.

[0036] When the rotating seat 1 switches to the third power-on position, the first cam 21 continues to rotate. The first cam 21 cancels the force applied to the first live wire power take-off component 41 and the second live wire power take-off component 42. Both the first live wire power take-off component 41 and the second live wire power take-off component 42 are in the retracted reset state. After the second cam 22 rotates, its contour displacement applies a force to the third live wire power take-off component 43 on the side, causing the third live wire power take-off component 43 to pop outward. Similarly, the third cam 23 maintains the effect on the neutral wire power take-off component 44. The third live wire power take-off component 43 and the neutral wire power take-off component 44 contact the corresponding metal strip in the track 6 to achieve power take-off.

[0037] When the rotating seat 1 is in the power-off position, all the cams no longer exert outward force on the power-taking components. Under the action of the power-taking components' own restoring force, the first live wire power-taking component 41, the second live wire power-taking component 42, the third live wire power-taking component 43, and the neutral wire power-taking component 44 all retract inward, disengage from contact with the metal strip inside the track 6, and disconnect the high-voltage connection.

[0038] By cleverly designing the rotating base 1, cam structure 2, and power-taking component, the power-taking and gear-adjusting functions are integrated into one unit. During the rotation of the rotating base 1 to switch gears, the cam structure 2 directly controls the pop-up and retraction of the power-taking component to complete the power-taking operation, eliminating the need for a separate gear-adjusting mechanism. This significantly reduces the number and complexity of internal components, making the internal structure of the switch more concise and compact. Because power-taking and gear-adjusting are integrated, the space occupied by the high-voltage switch in the power supply box 7 is significantly reduced compared to traditional methods. There is no longer a need to reserve extra space for a separate gear-adjusting mechanism, allowing for more efficient use of the internal space of the power supply box. This optimization not only helps to shorten the overall length of the power supply box but also provides more possibilities for the layout design of other electronic components within the power supply box, facilitating product miniaturization and thinning, enhancing the product's competitiveness in space utilization, and meeting the installation and use needs of more space-constrained scenarios.

[0039] Specifically, each of the first cam 21 and the second cam 22 is provided with an ejector tip 24; the third cam 23 includes a central circle and ejector protrusions 25 concentrically arranged around the central circle, the ejector protrusions 25 having a superior arc structure; in top view, the included angle between the ejector tips 24 of the first cam 21 and the second cam 22 is 90°, and the ejector tips 24 of the second cam 22 do not overlap with the ejector protrusions 25. The ejector tip 24 structure of the first cam 21 and the second cam 22 can accurately concentrate the force on a specific live wire power take-off component, ensuring that only one corresponding live wire power take-off component is ejected at a time when switching gears, avoiding multiple live wire power take-off components popping out simultaneously and causing circuit short circuits or other faults. The superior arc structure of the third cam 23 pushes out the round protrusion 25, which can continuously and stably apply force to the neutral wire power take-off component 44, ensuring that the neutral wire power take-off component 44 can reliably contact the neutral wire metal strip 62 in each power connection position, thereby improving the stability and reliability of the entire power take-off switch.

[0040] To prevent the power supply box from detaching from track 6 under its own weight after installation, traditional power supply boxes typically have elastic limiting protrusions near the ends of the side walls. These protrusions work in conjunction with anti-detachment latches within the track to prevent detachment. Simultaneously, although the power supply switch also has a limiting structure, this structure only extends outwards when the power-taking component extends to take power, further ensuring the power supply box does not detach from track 6 during operation. However, adding elastic limiting protrusions to the power supply box body 7 increases its length, hindering further improvements to shorten its overall length.

[0041] Therefore, the limiting function of the original elastic limiting protrusion is combined into the high-voltage switch 6. The limiting structure provided by this utility model has been creatively designed. The limiting structure 3 includes two symmetrically arranged fixed limiting blocks 32 and two symmetrically arranged telescopic limiting blocks 31; the fixed limiting blocks 32 and the telescopic limiting blocks 31 are arranged in a circular array.

[0042] The working principle is as follows: During the installation of the power supply box, the high-voltage switch needs to be set to the power-off position, at which time the two telescopic limit blocks 31 are in the extended state. When the power supply box is inserted into the track 6 from bottom to top, the extended telescopic limit blocks 31 first contact the track 6. Under the squeezing action of the track 6, the telescopic limit blocks 31 overcome the resistance of the internal elastic structure and automatically retract, providing clearance for the insertion of the power supply box and ensuring that the power supply box can be smoothly inserted into the track 6. After the power supply box is fully inserted, the telescopic limit blocks 31, which are no longer squeezed by the track 6, re-extend under the restoring force of the elastic structure, and tightly cooperate with the anti-disengagement locking position 63 inside the track 6 to prevent the power supply box from detaching from the track 6.

[0043] The one power-off position and three power-on positions are arranged in a circular array. Regardless of whether the power switch is switched to the power-off position or any of the three power-on positions, the telescopic limit block 31 or the fixed limit block 32 is always extended and engages with the anti-detachment latch 63 within the track 6. When the cam structure 2 drives the neutral wire power take-off component 44 and the corresponding live wire power take-off component to pop outwards to take power, if the telescopic limit block 31 is not extended in the current state, it indicates that the fixed limit block 32 has extended. It will extend outwards under the trigger of the position switching action, taking turns with the fixed limit block 32 to stably limit the drive power box, counteracting the tendency of the drive power box to detach from the track 6 due to its own weight and other factors, ensuring that the drive power box is stably fixed on the track 6 during power take-off operation.

[0044] When it is necessary to disassemble the drive power box, pull the drive power box downwards with force. The telescopic limit block 31 is squeezed by the track 6 and automatically retracts to avoid the resistance of the elastic structure, thereby releasing the limit constraint on the drive power box and allowing the drive power box to smoothly detach from the track 6.

[0045] Traditional drive power supply boxes require elastic limiting protrusions on the power supply box body 7, resulting in an increased overall length and limiting the product's space utilization optimization. The limiting structure 3 provided in this embodiment, through a circumferential array of fixed limiting blocks 32 and telescopic limiting blocks 31, is tightly integrated with the power supply switch's position layout, eliminating the need for additional independent elastic limiting protrusions and effectively shortening the overall length of the drive power supply box. This allows the product to better adapt to space-constrained installation environments, such as narrow ceilings in commercial spaces and compact display areas in exhibition halls, greatly enhancing the product's spatial adaptability and market competitiveness.

[0046] Traditional limiting structures 3 only extend to limit the movement when the power-taking component extends to take power. However, the limiting structure 3 provided in this embodiment always has a telescopic limiting block 31 or a fixed limiting block 32 engaging with the outer surface of the track 6 to limit the movement, regardless of whether it is in the power-off installation state or the power-on working state. This all-state limiting design can effectively cope with the external forces subjected to the drive power box under different operating conditions, such as collisions during installation and vibrations during operation, ensuring that the drive power box and the track 6 always maintain a stable connection. This avoids safety hazards such as circuit interruption and equipment falling due to loose connection, significantly improving the reliability and safety of the product.

[0047] Specifically, the rotating base 1 includes an upper half-base 11 and a lower half-base 12 connected to each other. The cam structure 2 is disposed on the upper half-base 11, and the fixed limiting block 32 is disposed on the outer peripheral surface of the lower half-base 12. The rotating base 1 adopts a split design of the upper half-base 11 and the lower half-base 12, which can be connected by ultrasonic welding or snap-fit ​​connection, spatially separating the cam structure 2 and the fixed limiting block 32. The cam structure 2 is disposed on the upper half-base 11, making full use of the space above it to realize the control function of the power supply component; the fixed limiting block 32 is disposed on the outer peripheral surface of the lower half-base 12, cooperating with the sliding groove 33 and the telescopic limiting block 31 on the top of the lower half-base 12 to form a three-dimensional limiting structure. This layout avoids the horizontal stacking of components, and compared with the traditional integrated design, it greatly reduces the wasted space inside the drive power box, making the overall structure more compact.

[0048] Furthermore, the top of the lower half of the seat 12 is provided with a groove 33 for guiding the extension and retraction of the telescopic limiting blocks 31. The backs of the two telescopic limiting blocks 31 are connected by springs 34. The groove 33 provides a precise movement track 6 for the telescopic limiting blocks 31, effectively limiting the offset and sway of the telescopic limiting blocks 31 during the extension and retraction process, ensuring that they can accurately cooperate with the track 6 to achieve the limiting function. At the same time, the backs of the two telescopic limiting blocks 31 are connected by springs 34. The stable elastic force provided by the springs 34 not only ensures that the telescopic limiting blocks 31 can reliably extend and limit under normal conditions, but also quickly reset after being squeezed and retracted by external force. In frequent extension and retraction movements, it plays a buffering and shock-absorbing role, reducing the collision and wear between components, greatly improving the structural reliability and service life of the limiting structure 3 and even the entire drive power box, and reducing the probability of failure caused by structural instability.

[0049] The chamfered edge of the snap-fit ​​end of the telescopic limiting block 31 forms an assisting slope 311. During the installation of the drive power supply box, the assisting slope 311 of the telescopic limiting block 31 contacts the track 6 first. Compared to traditional right-angled edges, the slope structure can decompose the squeezing force of the track 6 on the telescopic limiting block 31 into a component force perpendicular to the slope and a component force along the slope direction. The component force along the slope direction guides the telescopic limiting block 31 to retract more smoothly, significantly reducing the frictional resistance between the telescopic limiting block 31 and the track 6. This design makes the insertion of the drive power supply box into the track 6 easier and smoother, reduces jamming during installation, effectively improves assembly efficiency, reduces the labor intensity of manual installation, and also reduces the risk of component damage due to excessive installation resistance.

[0050] When disassembling the drive power supply box, pulling downwards forcefully will cause the telescopic limit block 31 to re-engage with the track 6. The assist ramp 311 prevents sharp collisions and scratches between the snap-fit ​​end of the telescopic limit block 31 and the track 6. Guided by the assist ramp 311, the impact force on the telescopic limit block 31 during retraction is buffered and dispersed, effectively reducing wear and scratches on the surfaces of the telescopic limit block 31 and the track 6, protecting the structural integrity of both. Over long-term use, this design can significantly extend the service life of the drive power supply box and the track 6, reduce equipment maintenance and replacement costs, and improve the overall reliability of the product.

[0051] In a preferred embodiment, the telescopic limiting block 31 has a positioning hole 313 on its back for the spring 34 to extend into, and a vertical plate 35 supporting the spring 34 is provided in the slide groove 33. The telescopic limiting block 31 is provided with an anti-slip shoulder 312 to prevent the telescopic limiting block 31 from disengaging from the slide groove 33. The spring 34 is connected to two telescopic limiting blocks 31 at both ends, and is supported in the middle by the vertical plate 35. This structure forms a symmetrical force distribution pattern. During the installation or removal of the drive power box, regardless of which telescopic limiting block 31 contacts the track 6 first and retracts, the spring 34 will evenly transmit the force to the two telescopic limiting blocks 31 through the tension at both ends and the supporting force in the middle, preventing a single limiting block from being subjected to excessive pressure and thus shifting or being damaged. Under normal working conditions, the symmetrical tension of the spring 34 can also ensure that the two telescopic limiting blocks 31 always maintain stable contact with the track 6, preventing the drive power box from loosening due to uneven force distribution, and greatly improving the overall stability and reliability of the limiting structure 3.

[0052] The bottom of the lower half of the base 12 is provided with a retaining ring 15. During installation, the retaining ring 15 can quickly and accurately engage with the mounting slot inside the power supply box 7, effectively preventing the rotating seat 1 from shifting or misaligning in the axial direction, and ensuring that the relative position of the rotating seat 1 and the power supply box 7 remains fixed. The retaining ring 15 is provided with a shift mark 14 and has a rotating slot 13. The shift mark 14 on the retaining ring 15 cooperates with the gear position number 71 on the power supply box 7 to form a clear and intuitive gear position indication. See Figure 4 As shown, position 0 is the power-off position, while positions 1, 2, and 3 are the power-on positions. When adjusting the high-voltage switch, users can quickly and accurately determine the current position and the direction to be switched by observing the correspondence between the shift mark 14 and the position number 71, avoiding power failure or circuit malfunction due to misoperation. This design reduces the requirement for professional knowledge, allowing ordinary users to easily complete the position adjustment operation, thus improving the product's usability and user experience.

[0053] The rotating slot 13 at the bottom of the retaining ring 15 provides a convenient operating interface for the user. By inserting a suitable tool (such as a screwdriver, hex wrench, etc.) into the rotating slot 13, the retaining ring 15 can be directly driven to rotate, thereby driving the rotating seat 1 to switch gears.

[0054] In one embodiment, the neutral wire power take-off component 44 and the live wire power take-off component are metal conductive sheet structures, specifically thin copper sheets, which have high strength and rigidity. During frequent pop-up and retraction actions and contact friction with high-voltage metal strips, they can effectively resist external force deformation and wear, and maintain the integrity and stability of the structure.

[0055] In another embodiment, the neutral wire power take-off component 44 and the live wire power take-off component are metal conductive wire structures, specifically copper wires. Compared to metal conductive sheets, the metal conductive wire structure increases the contact area with the high-voltage metal strip. During actual power take-off, the wire can fit against the metal strip in a wraparound or multi-point contact manner, effectively reducing the risk of power failure due to poor contact. Even if the track 6 has a certain degree of wear, deformation, or slight misalignment during installation, the metal conductive wire can still ensure a good electrical connection with the high-voltage metal strip due to its larger contact area, stably transmitting current and providing a more reliable power guarantee for the normal operation of the track lights, reducing lighting interruptions caused by power failure.

[0056] The output ends of the neutral wire power take-off component 44 and the live wire power take-off component are connected to conductive clamps 51, and the input ends form arc-shaped power take-off hooks 52. These arc-shaped hooks 52 can tightly conform to the surface contour of the high-voltage metal strip of the track 6, increasing the contact area, reducing contact resistance, and lowering power transmission loss. Simultaneously, the arc-shaped structure provides a certain elastic clamping force, ensuring continuous and stable contact between the power take-off component and the metal strip even if the track 6 experiences slight deformation or vibration due to external forces. This avoids power outages or current fluctuations caused by poor contact, providing a stable and reliable power supply to the track 6 lights. The conductive clamps 51 are connected to the circuit board, achieving a secure connection between the wires and the circuit board through mechanical clamping. Compared to traditional welding methods, this effectively prevents loosening or detachment of solder joints caused by vibration, thermal expansion and contraction, further ensuring stable circuit operation and reducing the probability of equipment failure.

[0057] The first live wire power take-off component 41 and the second live wire power take-off component 42 are arranged horizontally, the third live wire power take-off component 43 is located below the first live wire power take-off component 41, and the neutral wire power take-off component 44 is located below the second live wire power take-off component 42. This layered and staggered layout makes full use of the three-dimensional space inside the power supply box and avoids the stacking and occupation of power take-off components in the horizontal direction. The first live wire power take-off component 41, the second live wire power take-off component 42, the third live wire power take-off component 43, and the neutral wire power take-off component 44 are clamped on the cable holder 53 and their wiring direction is adjusted so that the output sections of the first live wire power take-off component 41, the second live wire power take-off component 42, the third live wire power take-off component 43, and the neutral wire power take-off component 44 are led out straight and arranged vertically at intervals. Compared with the traditional messy or planar wiring method, the space volume occupied by the power take-off components and wiring inside the power supply box is significantly reduced. The compact spatial layout not only provides more space for the installation and layout of other electronic components inside the power supply box, facilitating the optimization of circuit design, but also makes it possible to achieve a miniaturized and thinner design for the power supply box, enabling it to better adapt to space-constrained installation scenarios and enhance the product's competitiveness in the market.

[0058] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0059] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" 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 mechanical connection, an electrical connection, or a connection that allows for communication; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0060] It is understood that those skilled in the art can make equivalent substitutions or changes based on the technical solution and inventive concept of this utility model, and all such substitutions or changes should fall within the protection scope of this utility model.

Claims

1. A track power take-off switch, characterized in that The device includes a rotating base, a cam structure and a limiting structure mounted on the rotating base, a neutral wire power take-off component arranged beside the cam structure, and N live wire power take-off components arranged beside the cam structure. The rotating base rotates to form a power-off position and N power-on positions, where N is an integer greater than 1. The rotating base is used to drive the cam structure to rotate. When in any power-on position, the cam structure drives the neutral wire power take-off component and one of the live wire power take-off components to pop outward; when in the power-off position, the neutral wire power take-off component and all the live wire power take-off components retract inward.

2. The track power take-off on / off switch of claim 1, wherein, N is 3. The three live wire power take-off components are a first live wire power take-off component, a second live wire power take-off component, and a third live wire power take-off component. The cam structure includes a first cam, a second cam, and a third cam connected sequentially from top to bottom. The first and second live wire power take-off components are located beside the first cam. The first cam is used to drive the first and second live wire power take-off components outward one by one. The third live wire power take-off component is located beside the second cam. The second cam is used to drive the third live wire power take-off component outward. The neutral wire power take-off component is located beside the third cam. The third cam is used to drive the neutral wire power take-off component outward.

3. The track power take-off on / off switch of claim 2, wherein, The first cam and the second cam each have an ejector tip; the third cam includes a central circle and ejector convexities concentrically arranged around the central circle, the ejector convexities being of a superior arc shape; in a top-view projection, the angle between the ejector tips of the first cam and the second cam is 90°, and the ejector tip of the second cam does not overlap with the ejector convexities.

4. The track power take-off on / off switch of claim 1, wherein, The one power-off position and three power-on positions are arranged in a circular array, and the limiting structure includes two symmetrically arranged fixed limiting blocks and two symmetrically arranged telescopic limiting blocks; the fixed limiting blocks and the telescopic limiting blocks are arranged in a circular array.

5. The high-voltage switch for the track power supply according to claim 4, characterized in that, The rotating seat includes an upper half and a lower half connected to each other. The cam structure is set on the upper half, and the fixed limiting block is set on the outer circumferential surface of the lower half. The top of the lower half is provided with a sliding groove to guide the telescopic limiting block to extend or retract. The backs of the two telescopic limiting blocks are connected by a spring.

6. The track power take-off on / off switch of claim 5, wherein, The edges of the snap-fit ​​end of the telescopic limiting block are chamfered to form a moving inclined surface.

7. The track power take-off on / off switch of claim 5, wherein, The telescopic limiting block has a positioning hole on its back for the spring to extend into, the slide groove has a vertical plate to support the spring, and the telescopic limiting block has an anti-slip device to prevent the telescopic limiting block from leaving the slide groove.

8. The track power take-off on / off switch of claim 2, wherein, The neutral wire power supply component and the live wire power supply component are metal conductive wire structures.

9. The track power take-off on / off switch of claim 8, wherein, The output ends of the neutral wire power take-off component and the live wire power take-off component are connected to conductive clamps, and the input ends form arc-shaped power take-off hooks. The first and second live wire power take-off components are distributed left and right. The third live wire power take-off component is located below the first live wire power take-off component, and the neutral wire power take-off component is located below the second live wire power take-off component. The first, second, third, and neutral wire power take-off components are clamped on the wire holder and their wiring direction is adjusted so that the output sections of the first, second, third, and neutral wire power take-off components are straight and arranged at vertical intervals.

10. The high-voltage switch for the track power supply according to any one of claims 1-7, characterized in that, The zero line power taking member and the live wire power taking member are metal conductive sheet structures.

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