A multi-wire track light circuit switching device and a lamp

Abstract

This utility model discloses a multi-line track light circuit switching device and lamp, relating to the field of lighting fixture technology, aiming to solve the problems of complex structure, inconvenient circuit switching, and poor contact in existing multi-line track light electrical boxes. The switching device includes a track head, a contact spring assembly, a first fixed switch, a built-in circuit board, and a DIP switch; the track head has an embedded compartment, and the contact spring assembly can switch states within the embedded compartment to electrically connect with the track's neutral wire and at least two live wires; the first fixed switch simultaneously fixes the track head and drives the contact spring assembly; the built-in circuit board draws power from the high-voltage input terminal and supplies power to the LED light source through the low-voltage output terminal; the DIP switch selectively conducts the corresponding live wire high-voltage line branch, and can also disconnect all live wire branches through the off position. The lamp includes a lamp head, an LED light source, and the above-mentioned switching device, and can achieve automatic switching by human body induction through the sensing module and sensing head, with a simple structure and convenient and stable switching.

Description

Technical Field

[0001] This utility model relates to the field of lighting fixtures technology, and more specifically, to a multi-line track light circuit switching device and a lighting fixture. Background Technology

[0002] Multi-wire track lights (such as three-wire and four-wire track lights) are widely used in commercial lighting due to their ability to achieve group control. Their core functionality relies on track junction boxes or power supply boxes to enable the connection and switching between electrical appliances and the track circuit. However, existing technologies suffer from problems such as complex structure, inconvenient switching, and poor stability, as detailed below:

[0003] The LED track light three-wire track power box structure disclosed in patent CN201921239185 uses an insulated rotating shaft to drive the conductive contact piece to contact the conductive copper sheet to realize the circuit switching. It relies on mechanical rotation to switch the circuit. Long-term rotation can easily lead to poor contact of conductive parts and pose a risk of open circuit.

[0004] Patent CN202111609444 discloses an insulating spacer, a push-type switching assembly, a track connector, and a switching method. Although the circuit is made conductive by sliding a conductive push button along the sliding interval of the insulating spacer and switching between conductive windows using an elastic contact part, the mechanical structure needs to be manually pushed to complete the switching. Moreover, the assembly includes multiple cooperating parts such as the sliding interval, the conductive push button, and the insulating spacer, resulting in a complex overall structural design. After long-term use, the sliding parts are prone to wear or jamming, leading to unsmooth switching and potentially causing contact instability due to changes in the gaps between the parts.

[0005] The rotary on / off contact head and power supply rail box disclosed in patent CN202111526977 achieves on / off switching by rotating a knob switch relative to the rotating shaft housing to change the contact state between the elastic contact part and the load conductive sheet. However, it still relies on a rotary mechanical structure, which is cumbersome to operate. Furthermore, it is difficult to maintain a stable connection between the rail box and the power supply rail when the circuit is broken, thus limiting its practicality.

[0006] The above-mentioned technical solutions all suffer from problems such as reliance on complex mechanical structures for switching, insufficient adaptability and stability, making it difficult to meet the needs of the commercial lighting sector for convenient and stable switching of multi-line track lights. Summary of the Invention

[0007] This utility model provides a multi-line track light circuit switching device and lamp to solve the problems of existing multi-line track light circuit switching devices that rely on mechanical rotation or push structure to achieve circuit switching, which have the problems of complex structure and cumbersome operation; after long-term use, mechanical parts are prone to wear and conductive parts are prone to poor contact, and there are also defects such as unstable connection between the device and the track in the case of circuit break. It is difficult to meet the technical problems of convenient, stable and multi-circuit adaptation of multi-line track light circuit switching in commercial lighting.

[0008] The first aspect of this utility model provides a multi-line track light switching device, comprising:

[0009] A track head, wherein the track head is provided with an embedded compartment for accommodating conductive components;

[0010] The contact spring assembly can be electrically connected to the neutral wire and at least two live wires of the track bar, and can switch between a non-working state hidden in the embedding compartment and a working state that extends out of the embedding compartment and contacts the track bar.

[0011] A first fixed switch is disposed on the track head, which can simultaneously fix the track head to the track bar and drive the contact spring assembly to switch to the working state.

[0012] The built-in circuit board has a high-voltage input terminal and a low-voltage output terminal. The high-voltage input terminal is electrically connected to the contact spring assembly to obtain the electrical energy transported by the track bar, and the low-voltage output terminal is used to power the LED light source.

[0013] A DIP switch, which is connected to the built-in circuit board, is capable of selectively activating the high-voltage line branch corresponding to the live wire on the built-in circuit board.

[0014] Furthermore, the contact spring assembly includes at least three contact springs, each corresponding to the neutral wire and at least two live wires of the track bar, and all contact springs are electrically connected to the high-voltage input terminal of the built-in circuit board.

[0015] Furthermore, the first fixed switch has a latching part and a driving part. The latching part can be latched into the track bar to fix the track head. The driving part is linked with the contact spring assembly. When the first fixed switch is operated, the driving part drives the contact spring assembly to rotate around the rotating shaft embedded in the chamber to the working state.

[0016] Furthermore, it also includes a second fixed switch, which is located at the track head and is distributed opposite to the first fixed switch along the length of the track head; the second fixed switch has a latching part that can be latched into the track bar, and together with the latching part of the first fixed switch, it forms a multi-point fixation at both ends.

[0017] Furthermore, the DIP switch has a conduction position corresponding to each live wire; when in any conduction position, only the high-voltage line branch of the corresponding live wire is connected to the high-voltage processing unit of the built-in circuit board.

[0018] Furthermore, the DIP switch also has an off position, in which all high-voltage branch lines of the live wires are disconnected.

[0019] Furthermore, the end of the contact spring in the working state is provided with an arc-shaped conductive contact surface to adapt to the surface contour of the copper strip of the track and improve the stability of conductive contact.

[0020] In a second aspect, this utility model provides a lamp, including a lamp head, an LED light source, and the multi-line track light circuit switching device described in the above embodiments. The LED light source is disposed inside the lamp head, and the power input terminal of the LED light source is electrically connected to the low-voltage output terminal of the built-in circuit board through a wire.

[0021] Furthermore, the lamp head and the track head are connected by an adjustable bracket, which can drive the lamp head to rotate around the axis of the track head and swing the lamp head in a direction perpendicular to the length of the track to adjust the lighting angle.

[0022] Furthermore, the built-in circuit board integrates a sensing module, and the track head is equipped with a sensing head electrically connected to the sensing module. The sensing module can receive the human body sensing signal transmitted by the sensing head, and control the on / off of the circuit between the low-voltage output terminal of the built-in circuit board and the LED light source according to the signal, so as to realize the automatic switching of the lamp.

[0023] This utility model relates to a multi-line track light circuit switching device and fixture. Addressing the shortcomings of existing multi-line track light circuit switching devices that rely on mechanical rotation or pushing structures for circuit switching, resulting in complex structures and cumbersome operation, this invention replaces mechanical switching with a purely electrical switching method by using a DIP switch in conjunction with an internal circuit board. This simplifies the structure and avoids the wear and tear of mechanical components over long-term use, achieving convenient and stable switching of multi-wire high-voltage line branches. For devices that only adapt to a few circuits (such as three-wire two-circuit) and cannot meet the switching requirements of multiple live wires and multiple circuits, this invention utilizes a contact spring assembly that electrically connects to the track bar's neutral wire and at least two live wires, combined with the selective conduction function of the DIP switch, adapting to multi-circuit switching scenarios. Furthermore, it addresses the issue of mechanical switching devices being prone to problems... To address the issues of poor contact in conductive components and unstable connection between the device and the track under open-circuit conditions, a first fixed switch synchronously fixes the track head and drives the contact spring assembly, ensuring stable contact between the contact spring and the track bar. This, combined with a second fixed switch, creates multi-point fixation at both ends, improving the connection stability between the device and the track bar. To address the lack of convenient control functions in existing devices, a built-in circuit board integrates a sensing module, which, along with the sensing head on the track head, enables human-sensor control of the light fixture's on / off state. Simultaneously, the arc-shaped conductive contact surface at the end of the contact spring adapts to the contour of the copper strip on the track bar, further enhancing conductive contact stability. The overall structure balances ease of switching, connection stability, and adaptability to multiple scenarios, resolving the problem that existing technologies cannot meet the switching needs of multi-line track lights in commercial lighting.

[0024] Other features and advantages of the present invention will become clear from the following detailed description of exemplary embodiments of the present invention with reference to the accompanying drawings. Attached Figure Description

[0025] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments of the present invention and, together with their description, serve to explain the principles of the present invention.

[0026] Figure 1 A schematic diagram of the multi-line track light switching device;

[0027] Figure 2 A side view of a multi-track lighting circuit switching device;

[0028] Figure 3 A 3D view of a multi-line track light switching device;

[0029] Figure 4 A top view of the multi-line track light switching device (with the DIP switch in the off state).

[0030] Figure 5 A top view of the multi-line track light switching device (with the DIP switch in the open position);

[0031] Figure 6 This is a schematic diagram of the structure of the first fixed switch;

[0032] Figure 7 This is a circuit diagram of a multi-line track light switching device.

[0033] Figure label:

[0034] Track head 1; Embedded compartment 2; Contact spring assembly 3; Conductive contact surface 31; First fixed switch 4; Buckle part 41; Drive part 42; DIP switch 6; Second fixed switch 7; Lamp head 8; Adjustable bracket 9; Sensor head 10. Detailed Implementation

[0035] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that, unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the present invention.

[0036] The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the invention or its application or use.

[0037] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and equipment should be considered part of the specification.

[0038] In all the examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values.

[0039] It should be noted that similar labels and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be discussed further in subsequent figures.

[0040] In the specification and claims of this utility model, the terms "first" and "second" may explicitly or implicitly include one or more of those features. In the description of this utility model, unless otherwise stated, "multiple" means two or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0041] 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", "axial", "radial", "circumferential" and other terms indicating orientation or positional relationships are based on the orientation or positional relationships shown in the accompanying drawings and are 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, and therefore should not be construed as a limitation of this utility model.

[0042] 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 or an electrical 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 according to the specific circumstances.

[0043] The multi-line track light switching device according to an embodiment of the present invention will now be described in detail with reference to the accompanying drawings.

[0044] The multi-line track light circuit switching device of this utility model includes: a track head 1, with an embedded compartment 2 for accommodating conductive components inside the track head 1; a contact spring assembly 3, which can be electrically connected to the neutral wire and at least two live wires of the track bar, and can switch between a non-working state hidden in the embedded compartment 2 and a working state extending out of the embedded compartment 2 and contacting the track bar; a first fixed switch 4, which is disposed on the track head 1 and can simultaneously fix the track head 1 to the track bar and drive the contact spring assembly 3 to switch to the working state; an internal circuit board 5, which has a high-voltage input terminal and a low-voltage output terminal. The high-voltage input terminal is electrically connected to the contact spring assembly 3 to obtain the electrical energy transmitted by the track bar, and the low-voltage output terminal is used to power the LED light source; and a DIP switch 6, which is connected to the internal circuit board 5 and can selectively conduct the high-voltage line branch corresponding to the live wire on the internal circuit board 5.

[0045] In other words, such as Figure 1 , Figure 2 As shown, the multi-line track light circuit switching device of this utility model consists of at least a track head 1, a contact spring assembly 3, a first fixed switch 4, a built-in circuit board 5, and a DIP switch 6.

[0046] The track head 1 serves as the mounting carrier for the entire switching device. Its internal embedded compartment 2 is a rectangular cavity structure, the size of which matches the overall volume of the contact spring assembly 3. This ensures that the contact spring assembly 3 can be completely concealed when not in operation, preventing damage to conductive components during transportation or installation. The contact spring assembly 3 is made of copper, possessing excellent conductivity and elasticity. Initially, it is concealed within the embedded compartment 2, allowing the device to be smoothly inserted into the track along its length. When the first fixed switch 4 is operated, its mechanical action synchronously extends the contact spring assembly 3 from the embedded compartment 2 until it makes precise contact with the neutral wire and at least two live wire copper strips on the track, completing the electrical connection switching. The first fixed switch 4 is integrated into the side wall of the track head 1. Its operating stroke is optimized to ensure that during the switch push, the locking structure of the track head 1 first engages with the track groove, and then the contact spring assembly 3 gradually extends to contact the copper strips, preventing accidental energization of conductive components when not fixed. The built-in circuit board 5 is installed inside the track head 1 on the side away from the embedded compartment 2. Its high-voltage input terminal is soldered to the tail of the contact spring assembly 3 via an insulated wire. The high-voltage processing unit of the built-in circuit board 5 uses an AC-DC conversion chip, which can convert the high-voltage AC power input from the track bar into low-voltage DC power, providing stable power to the LED light source from the low-voltage output terminal. The DIP switch 6 is surface-mounted on the edge of the built-in circuit board 5, and its pins are directly soldered to the copper foil of the high-voltage line branch on the built-in circuit board 5. By moving the toggle switch, the conduction control of different live wire branches can be achieved. Compared with the traditional mechanical rotation switching structure, there is no need to frequently adjust the spring position, making operation more convenient and reducing the failure rate.

[0047] To further enhance the product's aesthetics, a DIP switch housing that matches the sliding structure of the rail head 1 can be added outside the DIP switch 6. By moving the DIP switch housing, the position of the DIP switch 6 can be adjusted, thereby enabling the switching of different live wire paths.

[0048] In some specific embodiments, the contact spring assembly 3 includes at least three contact springs, each corresponding to the neutral wire and at least two live wires of the track bar, and all contact springs are electrically connected to the high-voltage input terminal of the built-in circuit board 5.

[0049] As shown in Figures 3 and 6, the number of contact springs in the contact spring assembly 3 is adapted to the circuit specifications of the track strip. In this embodiment, four contact springs are used, corresponding to the neutral wire N, the first live wire L1, the second live wire L2, and the third live wire L3 of the track strip, respectively. Each contact spring has the same structure, consisting of a connecting section, an elastic section, and a contact section. The connecting section is connected to the high-voltage input terminal of the built-in circuit board 5 by soldering, and the solder joint is covered with insulating heat shrink tubing to prevent short circuits. The elastic section is U-shaped and provides cushioning during contact, avoiding wear on the copper strip caused by hard contact. The contact section is the free end of the spring and is used to contact the copper strip of the track strip. The four contact springs are arranged linearly in the embedding chamber 2, with the spacing consistent with the spacing of the copper strips on the track strip, ensuring that they can contact the corresponding copper strips simultaneously when extended. All contact springs are made using an integrated stamping process to avoid poor conductivity caused by splicing structures. The surface of the springs can also be plated with a nickel alloy coating with a thickness of 0.05mm to improve wear resistance and oxidation resistance, and extend service life. With the design of at least three contact springs, the device can be adapted to various specifications of track strips such as three-wire two-circuit and four-wire three-circuit, and can meet the group control requirements of different commercial lighting scenarios without replacing the device, thus significantly improving adaptability.

[0050] In some specific embodiments, the first fixed switch 4 has a latching part 41 and a driving part 42. The latching part 41 can be latched into the track bar to fix the track head 1. The driving part 42 is linked with the contact spring assembly 3. When the first fixed switch 4 is operated, the driving part 42 drives the contact spring assembly 3 to rotate around the rotating shaft embedded in the chamber 2 to the working state.

[0051] like Figure 6As shown, the latching part 41 of the first fixed switch 4 consists of two symmetrically arranged elastic claws with barbed ends. The material is preferably nylon 66, which has good toughness. When the first fixed switch 4 is pushed, the claws can elastically deform and engage with the slots inside the track bar. After being locked, it can withstand a pulling force of more than 50N, ensuring that the track head 1 does not loosen on the track bar. The driving part 42 is a linkage structure integrally formed with the first fixed switch 4. One end of the linkage is connected to the main body of the fixed switch, and the other end is hinged to the connecting frame of the contact spring assembly 3 through a rotating shaft. The embedded chamber 2 is provided with a rotating shaft seat (not shown) that is adapted to the contact spring assembly 3. The diameter of the rotating shaft seat is 0.1mm larger than the diameter of the rotating shaft, ensuring smooth rotation without obvious shaking. When the first fixed switch 4 is rotated, the connecting rod of the drive unit 42 rotates around the hinge point, causing the contact spring assembly 3 to rotate around the shaft inside the embedded chamber 2. The rotation angle is 90°, causing the contact spring, which was originally hidden along the length of the track strip, to extend out of the embedded chamber 2 perpendicular to the length of the track strip, making precise contact with the copper strip of the track strip. This linkage structure allows the two actions of "fixing the track head" and "energizing the contact spring" to be completed simultaneously, eliminating the need for separate operations, simplifying the installation process, and avoiding the risk of electric shock that may occur if the energizer is applied before fixing, thus improving safety.

[0052] In some specific embodiments, a second fixed switch 7 is also included. The second fixed switch 7 is disposed on the track head 1 and is distributed opposite to the first fixed switch 4 along the length direction of the track head 1. The second fixed switch 7 has a latching part that can be latched into the track bar, and together with the latching part 41 of the first fixed switch 4, it forms a multi-point fixation at both ends.

[0053] As shown in Figures 1 and 4, the second fixed switch 7 and the first fixed switch 4 are located at opposite ends of the track head 1 along its length. Their structures are similar, but the second fixed switch 7 omits the drive unit 42, retaining only the latching part 41. The latching part 41 of the second fixed switch 7 is also an elastic claw, with the same size as the latching part 41 of the first fixed switch 4, ensuring compatibility with the track strip's slot. During installation, the first fixed switch 4 is first pushed to fix one end of the track head 1 and extend the contact spring assembly 3. Then, the second fixed switch 7 is pushed, causing its latching part to engage with the slot at the other end of the track strip, forming a two-point fixation at both ends. Compared to single-end fixation, this fixing method increases the contact area between the track head 1 and the track strip. When the track strip vibrates or the lamp angle is adjusted, it effectively prevents the track head 1 from tilting or shifting, ensuring stable contact between the contact spring assembly 3 and the copper strip, and reducing light flickering caused by poor contact. Meanwhile, the second fixed switch 7 enables the device to adapt to track heads 1 of different lengths, meeting various size requirements without adjusting the fixed structure, thus enhancing its versatility.

[0054] In some specific embodiments, the DIP switch 6 has a conduction position corresponding to each live wire; when in any conduction position, only the high-voltage line branch of the corresponding live wire is connected to the high-voltage processing unit of the built-in circuit board 5.

[0055] like Figure 1 , Figure 7 As shown, the DIP switch 6 is a multi-position electronic DIP switch with at least three conduction positions, corresponding to the first live wire L1, the second live wire L2, and the third live wire L3, respectively. Each conduction position pin of the DIP switch 6 is connected to the contact spring of the corresponding live wire through copper foil lines on the built-in circuit board 5, and the common pin is connected to the input terminal of the high-voltage processing unit (not shown) of the built-in circuit board 5. When the DIP switch 6 is set to the "L1" position, the line branch corresponding to the first live wire L1 is turned on, and the current flows from the copper strip of the track bar L1 through the contact spring and the DIP switch 6 into the high-voltage processing unit; at this time, the line branches corresponding to L2 and L3 remain open, ensuring that only the L1 circuit supplies power to the LED light source. Similarly, when set to the "L2" or "L3" position, only the corresponding live wire branch is turned on. This single-loop conduction design can realize group control of lighting. For example, in a commercial exhibition hall, the DIP switch 6 can be used to connect the lights of different areas to the L1, L2, and L3 circuits respectively, and turn on the corresponding area lighting as needed to achieve energy saving. Meanwhile, single-circuit conduction can avoid current overload caused by multiple circuits supplying power simultaneously, protect the high-voltage processing unit of the built-in circuit board 5, and extend the service life of the device.

[0056] Furthermore, the DIP switch 6 also has an off position, in which all high-voltage line branches of the live wires are disconnected.

[0057] like Figure 7 As shown, in addition to the three ON positions, the DIP switch 6 also has an OFF position, marked as "OFF" or "0". The OFF position pin is not connected to any live wire branch. When the switch is moved to this position, the common pin of the DIP switch 6 is disconnected from all live wire branches, the high-voltage processing unit of the built-in circuit board 5 receives no current, and the low-voltage output stops supplying power to the LED light source. The outer wall of the track head 1 has position markings corresponding to the DIP switch 6, labeled "0", "1", "2", and "3", corresponding to the "OFF", "L1", "L2", and "L3" live wire branches respectively. Users can visually observe the current position status. The OFF position setting provides a master power-off function, allowing power to be cut off without disassembling the device during lamp maintenance or long-term non-use, avoiding standby power consumption and the risk of electric shock. In addition, the built-in circuit board 5 also integrates a gear indicator LED. When the DIP switch 6 is in the off position, the indicator LED is off; when it is in any on position, the indicator LED is lit, further improving the convenience of gear identification, especially suitable for installation environments with low light.

[0058] In some specific embodiments, the end of the contact spring assembly 3 in the working state is provided with an arc-shaped conductive contact surface 31 to adapt to the surface contour of the copper strip of the track bar and improve the stability of conductive contact.

[0059] like Figure 6 As shown, each contact spring in the contact spring assembly 3 has an arc-shaped conductive contact surface 31 machined at its working end, with the arc radius matching the cross-sectional radius of the copper strip in the track. The arc-shaped conductive contact surface 31 is machined using precision grinding, with a surface roughness controlled below Ra0.8 to ensure a good fit with the copper strip. When the contact spring extends out of the embedded chamber 2 and contacts the copper strip, the arc-shaped conductive contact surface 31 can form a surface contact with the copper strip. Compared to traditional planar contact, the contact area is increased by more than 30%, effectively reducing contact resistance, reducing heat loss during current transmission, and preventing oxidation of the spring or copper strip due to local overheating. At the same time, the arc structure can adapt to copper strips with different degrees of wear. Even if the surface of the copper strip develops slight indentations due to long-term use, the arc-shaped contact surface 31 can still maintain stable contact with the copper strip through its own elastic deformation, solving the problem of poor contact that easily occurs after the copper strip wears in traditional planar springs, and significantly improving the durability and reliability of the device.

[0060] In a second aspect, this utility model provides a lamp, including a lamp head 8, an LED light source, and a multi-line track light circuit switching device as described in the above embodiments. The LED light source is disposed inside the lamp head 8, and the power input terminal of the LED light source is electrically connected to the low-voltage output terminal of the built-in circuit board 5 through a wire.

[0061] like Figure 1 , Figure 3 As shown, the lamp head 8 is preferably made of aluminum alloy and has an internal LED light source mounting cavity. The size of the mounting cavity is adapted to the LED light source module, which fixes the LED light source and provides heat dissipation. The multi-line track light circuit switching device is fixed to the top of the lamp head 8 with screws. The connection between the track head 1 and the lamp head 8 is equipped with an insulating gasket to prevent safety hazards caused by electrical conductivity of metal parts. This integrated design makes the overall structure of the lamp compact, eliminating the need for an additional power supply box and reducing installation space occupation. At the same time, the integrated design of the circuit switching device and the lamp 8 avoids the clutter and safety risks caused by external wiring connections, improving the aesthetics and practicality of the lamp.

[0062] Furthermore, the lamp head 8 is connected to the track head 1 by an adjustable bracket 9. The adjustable bracket 9 can drive the lamp head 8 to rotate around the axis of the track head 1 and can drive the lamp head 8 to swing in a direction perpendicular to the length of the track to adjust the lighting angle.

[0063] like Figure 1As shown, the adjustable bracket 9 is made of metal. One end is connected to the bottom of the track head 1 by a screw and can rotate relative to the track head 1. The other end is connected to the top shaft of the lamp head 8. The adjustable bracket allows the lamp head 8 to rotate around the axis of the track head 1, meeting the needs of horizontal lighting angle adjustment. A damping pad is provided at the joint between the movable section and the lamp head 8. The pad is made of nitrile rubber and has good friction. When the lamp head 8 swings in a direction perpendicular to the length of the track, the damping pad provides stable resistance, allowing the lamp head 8 to remain fixed within the swing angle range and not sag automatically due to gravity. In practical use, users can rotate the lamp head 8 to adjust the horizontal illumination area or swing the lamp head 8 to adjust the vertical illumination angle according to their lighting needs. For example, in a clothing store, the lamp head 8 can be adjusted to tilt at 45° to illuminate the clothing, highlighting the texture and details of the garments. The adjustable bracket 9 frees the lamp from the limitation of a fixed lighting angle, adapting to various lighting scenarios and improving the functionality and flexibility of the lamp.

[0064] Furthermore, the built-in circuit board 5 integrates a sensing module, and the track head 1 is provided with a sensing head 10 that is electrically connected to the sensing module. The sensing module can receive the human body sensing signal transmitted by the sensing head 10, and control the circuit between the low voltage output terminal of the built-in circuit board 5 and the LED light source according to the signal, so as to realize the automatic switching of the lamp.

[0065] like Figure 1 As shown, the sensing module integrated on the built-in circuit board 5 uses an infrared human body sensor chip with a sensing distance of 3-5m and a sensing angle of 120°, covering a large monitoring range. The sensing head 10 is a Fresnel lens, mounted on the track head 1 via a snap-fit ​​structure, and connected to the sensing module via two signal lines. When a human body enters the monitoring range of the sensing head 10, the lens focuses the infrared signal onto the sensing module. After receiving the signal, the sensing module outputs a high-level signal to control the relay on the built-in circuit board 5 to close, thus connecting the low-voltage output terminal to the LED light source, and turning on the light. When the human body leaves the monitoring range, the sensing module outputs a low-level signal after a 30-second delay, the relay opens, the circuit is cut off, and the light turns off. This automatic human body sensing switch function can further improve energy saving, especially suitable for areas with frequent but short-staying personnel, eliminating the need for manual switching of lights and avoiding energy waste caused by forgetting to turn off the lights. In addition, the delay time of the sensing module can be adjusted by a potentiometer on the built-in circuit board 5 to adapt to the usage needs of different scenarios, making it more flexible.

[0066] This utility model relates to a multi-line track light circuit switching device and fixture. Addressing the shortcomings of existing multi-line track light circuit switching devices that rely on mechanical rotation or pushing structures for circuit switching, resulting in complex structures and cumbersome operation, this invention utilizes a DIP switch 6 in conjunction with an internal circuit board 5 to replace mechanical switching with purely electrical switching. This simplifies the structure and avoids wear and tear on mechanical components over long-term use, achieving convenient and stable switching of high-voltage branch circuits with multiple live wires. For devices that only adapt to a few circuits (such as three-wire two-circuit) and cannot meet the switching requirements of multiple live wires and multiple circuits, this invention uses a contact spring assembly 3 to electrically connect to the track bar neutral wire and at least two live wires, combined with the selective conduction function of the DIP switch 6, to adapt to multi-circuit switching scenarios. Furthermore, it addresses the issue of contact problems in mechanical switching devices, where conductive components are prone to failure. To address the issue of unstable connection between the device and the track under both open and closed circuit conditions, the first fixed switch 4 synchronously fixes the track head 1 and drives the contact spring assembly 3, ensuring stable contact between the contact spring and the track bar. This, combined with the second fixed switch 7, forms a multi-point fixation at both ends, improving the connection stability between the device and the track bar. To address the lack of convenient control functions in existing devices, a built-in circuit board 5 integrates a sensing module, which, together with the sensing head 10 of the track head 1, enables human body sensing to control the on / off state of the lights. Simultaneously, the arc-shaped conductive contact surface 31 at the end of the contact spring assembly 3 adapts to the contour of the copper strip of the track bar, further enhancing conductive contact stability. The overall structure balances ease of switching, connection stability, and adaptability to multiple scenarios, solving the problem that existing technologies cannot meet the switching needs of multi-line track lights in commercial lighting.

[0067] Of course, for those skilled in the art, other structures and working principles of the multi-line track light switching device are understandable and achievable, and will not be described in detail in this utility model.

[0068] Although specific embodiments of the present invention have been described in detail by way of examples, those skilled in the art should understand that the above examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Those skilled in the art should understand that modifications can be made to the above embodiments without departing from the scope and spirit of the present invention. The scope of the present invention is defined by the appended claims.

Claims

1. A multiple track light line switching device, characterized by, include: The track head (1) has an embedded compartment (2) for accommodating conductive components. Contact spring assembly (3), which can be electrically connected to the neutral wire and at least two live wires of the track bar, and can switch between a non-working state hidden in the embedded compartment (2) and a working state that extends out of the embedded compartment (2) and contacts the track bar; The first fixed switch (4) is located on the track head (1) and can simultaneously fix the track head (1) to the track bar and drive the contact spring assembly (3) to switch to the working state. Built-in circuit board (5) has a high voltage input terminal and a low voltage output terminal. The high voltage input terminal is electrically connected to the contact spring assembly (3) to obtain the electrical energy transported by the track bar. The low voltage output terminal is used to power the LED light source. The DIP switch (6) is connected to the built-in circuit board (5) and can selectively conduct the high-voltage line branch corresponding to the live wire on the built-in circuit board (5).

2. The multiple track light line switching device according to claim 1, wherein, The contact spring assembly (3) includes at least three contact springs, which correspond one-to-one with the neutral wire and at least two live wires of the track bar, and all contact springs are electrically connected to the high voltage input terminal of the built-in circuit board (5).

3. The multi-wire track light circuit switching apparatus according to claim 1, wherein, The first fixed switch (4) has a latching part (41) and a driving part (42). The latching part (41) can be latched into the track bar to fix the track head (1). The driving part (42) is linked with the contact spring assembly (3). When the first fixed switch (4) is operated, the driving part (42) drives the contact spring assembly (3) to rotate around the rotating shaft in the embedded chamber (2) to the working state.

4. The multi-line track light switching device according to claim 3, characterized in that, It also includes a second fixed switch (7), which is located at the track head (1) and is distributed opposite to the first fixed switch (4) along the length direction of the track head (1); the second fixed switch (7) has a latching part, which can be latched into the track bar, and together with the latching part (41) of the first fixed switch (4) forms a multi-point fixation at both ends.

5. The multi-wire track light circuit switching apparatus according to claim 1, wherein, The DIP switch (6) has a conduction position corresponding to each live wire; when it is in any conduction position, only the high-voltage line branch corresponding to the live wire is connected to the high-voltage processing unit of the built-in circuit board (5).

6. The multiple track light line switching device of claim 5, wherein, The DIP switch (6) also has a disconnect position, in which all high-voltage line branches of the live wires are disconnected when the switch is in the disconnect position.

7. The multi-wire track light circuit switching apparatus according to claim 1, wherein, The contact spring assembly (3) has an arc-shaped conductive contact surface (31) at the end of the contact spring in the working state to adapt to the surface contour of the copper strip of the track and improve the stability of conductive contact.

8. A multi-wire track light fixture, characterized by, It includes a lamp head (8), an LED light source, and a multi-line track light switching device as described in any one of claims 1-7. The LED light source is disposed inside the lamp head (8), and the power input terminal of the LED light source is electrically connected to the low-voltage output terminal of the built-in circuit board (5) through a wire.

9. The multi-wire track light fixture of claim 8, wherein, The lamp head (8) is connected to the track head (1) by an adjustable bracket (9). The adjustable bracket (9) can drive the lamp head (8) to rotate around the axis of the track head (1) and can drive the lamp head (8) to swing in a direction perpendicular to the length of the track to adjust the lighting angle.

10. The multi-wire track light fixture of claim 8, wherein, The built-in circuit board (5) is equipped with a sensing module, and the track head (1) is provided with a sensing head (10) that is electrically connected to the sensing module. The sensing module can receive the human body sensing signal transmitted by the sensing head (10) and control the circuit between the low voltage output terminal of the built-in circuit board (5) and the LED light source according to the signal, so as to realize the automatic switching of the lamp.

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