Power taking device adaptive to lighting track, driving power supply and track lamp

Abstract

The invention provides a power taking device adaptive to a lighting track, a driving power supply and a track lamp. The power taking device comprises a shell; the rotating part is rotationally connected to the shell; the circuit board is fixed on the shell and is provided with a first electric connecting piece and a second electric connecting piece; the necessary electricity taking piece is arranged on the rotating piece, when the rotating piece rotates to the electricity taking position corresponding to the lighting track, the first end of the necessary electricity taking piece is connected with the common backflow conductor of the lighting track, and the second end of the necessary electricity taking piece makes contact with the first electric connecting piece; the at least two candidate power taking pieces are arranged on the rotating piece, and when the rotating piece rotates to the power taking position, the first ends of the candidate power taking pieces are connected with different candidate power supply conductors of the lighting track; the contact assembly is rotationally connected to the rotating part, when the contact assembly rotates to a target position relative to the rotating part, the first contact part makes contact with the second electric connecting part, the second contact part makes contact with the second end of the candidate power taking part, and the power taking device is compact in structure and high in integration degree.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of lighting, in particular to a power taking device adapted to a lighting track, a driving power supply and a track lamp. BACKGROUND

[0002] The multi-circuit LED track system is a lighting track technology applied to commercial scenarios or residences. By controlling multiple independent power supply circuits, not only power transmission can be provided, but also zoned control, dimming, color temperature adjustment and even dynamic color change of LED lamps can be achieved.

[0003] The power taking terminal position of the power taking device of the LED lamp corresponds to the independent power supply circuit of the track one by one to realize the basic power taking function. Some devices select the power supply circuit through an external toggle switch, but the switch is separated from the track power taking device and needs to be wired additionally, which has a complex structure and increases the overall volume of the power taking device. SUMMARY

[0004] The present application provides a power taking device adapted to a lighting track, a driving power supply and a track lamp to at least solve the above technical problems in the prior art.

[0005] In a first aspect, the present application provides a power taking device adapted to a lighting track, comprising: a housing; a rotating member rotatably connected to the housing; a circuit board fixed to the housing and provided with a first electrical connector and a second electrical connector, both of which extend to the rotating member; a necessary power taking member provided on the rotating member, a first end of the necessary power taking member being connected to a common return conductor of the lighting track and a second end of the necessary power taking member being in contact with the first electrical connector when the rotating member is rotated to a power taking position corresponding to the lighting track; at least two candidate power taking members provided on the rotating member, a first end of each of the candidate power taking members being connected to a different candidate power supply conductor of the lighting track and a second end of each of the candidate power taking members being fixed to an outer ring wall of the rotating member when the rotating member is rotated to the power taking position; and a contact assembly rotatably connected to the rotating member, comprising a first contact member and a second contact member integrally formed, the first contact member being in contact with the second electrical connector and the second contact member being in contact with the second end of the candidate power taking member corresponding to a target position when the contact assembly is rotated to the target position relative to the rotating member, wherein the target position has a plurality of target positions, and the candidate power taking member corresponding to different target positions is different.

[0006] In an implementation manner, the number of the candidate power taking members is not more than the number of the candidate power supply conductors of the lighting track to be adapted.

[0007] In an embodiment, the power taking device further comprises a control knob coaxially sleeved to the rotating member and relatively rotatable with the rotating member; and the contact assembly is coaxially arranged to the control knob and synchronously rotatable with the control knob.

[0008] In an embodiment, the control knob comprises an isolation portion sleeved to the outer periphery of the second end of the candidate power taking member and arranged between the second end of the candidate power taking member and the second contact member, and further provided with a contact gap; and a control portion sleeved to the outer periphery of the second contact member and forming an isolation ring groove with the isolation portion, and the second contact member is embedded in the isolation ring groove.

[0009] In an embodiment, the outer ring wall is provided with a positioning recess, the second end of the candidate power taking member is embedded in the positioning recess, and the surface of the candidate power taking member is lower than the opening of the positioning recess; the second contact member has a positioning protrusion protruding towards the contact gap; when the contact assembly is rotated to a target position relative to the rotating member, the positioning protrusion contacts the second end of the candidate power taking member corresponding to the target position.

[0010] In an embodiment, the isolation portion is provided with a positioning groove on the end surface facing away from the rotating member, and the first contact member is embedded in the positioning groove; the positioning groove and the isolation ring groove are communicated through a limiting channel, the first contact member and the second contact member have a connecting portion embedded in the limiting channel; and the isolation portion is further provided with a positioning hook abutting to the surface of the second contact member to limit the second contact member from separating from the isolation ring groove.

[0011] In an embodiment, the rotating member is provided with a power taking groove corresponding to the position of the first electrical connector, and the necessary power taking member is embedded in the surface of the power taking groove; and the first electrical connector is inserted into the power taking groove and always contacts the necessary power taking member during the rotation of the rotating member.

[0012] In an embodiment, the shell is formed with a receiving cavity, the rotating member is rotationally connected to the receiving cavity, the shell is further provided with a power taking opening corresponding to the position of the receiving cavity; when the rotating member is rotated to the power taking position, the necessary power taking member and the candidate power taking member are inserted into the power taking opening; and when the rotating member is rotated to a separation position away from the power taking position, the necessary power taking member and the candidate power taking member are located in the receiving cavity.

[0013] In an embodiment, the rotating member is further provided with a clamping member, when the rotating member rotates to the power taking position, the clamping member is connected with the clamping groove of the lighting track; when the rotating member rotates to the separation position away from the power taking position, the clamping member is separated from the clamping groove of the lighting track.

[0014] In an embodiment, one end of the rotating member is rotatably connected with a locking piece, the locking piece is used for controlling the rotation of the rotating member, and the shell is provided with a locking groove matched with the locking piece.

[0015] In a second aspect, the application provides a driving power supply with the power taking device according to any one of the first aspect of the application.

[0016] In an embodiment, the driving power supply has an expansion function module, and the function module is at least one of a dimming control module and a DALI control module.

[0017] In a third aspect, the application provides a track lamp with the power taking device according to any one of the first aspect of the application or the driving power supply according to any one of the second aspect of the application.

[0018] The power taking device, the driving power supply and the track lamp provided by the application can select any candidate power supply conductor on the lighting track to take power, greatly improving the flexibility, adjustability and functionality of lighting design, and enriching the lighting scene.

[0019] It should be understood that the content described in this part is not intended to identify key or important features of the embodiments of the application, nor is it used to limit the scope of the application. Other features of the application will become apparent from the following description. BRIEF DESCRIPTION OF DRAWINGS

[0020] The above and other objects, features and advantages of the example embodiments of the application will be more apparent from the following detailed description read in conjunction with the accompanying drawings, in which several embodiments of the application are shown by way of example, and in which: Figure 1 A cross-sectional structure schematic diagram of a lighting track according to an embodiment of the application is shown; Figure 2 A whole structure schematic diagram of a power taking device according to an embodiment of the application is shown; Figure 3 An exploded structure schematic diagram of a power taking device according to an embodiment of the application is shown Figure 1 ; Figure 4 An exploded structure schematic diagram of a power taking device according to an embodiment of the application is shown Figure 2 ; Figure 5 Fig. 1 shows a schematic diagram of a part structure of a power taking device according to an embodiment of the present application Figure 1 ; Figure 6 Fig. 1 shows a schematic diagram of a part structure of a power taking device according to an embodiment of the present application Figure 2 .

[0021] In the drawings, the same or similar notations represent the same or similar parts. DETAILED DESCRIPTION

[0022] In order to make the objectives, characteristics and advantages of the present application more apparent and easy to understand, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0023] Referring to Figure 1 and Figure 2 , the present application provides a power taking device 2 adapted to a lighting track 1 in a first aspect. The adapted lighting track 1 is a track device for connecting and installing a lighting device, and supplying power to the lighting device. The power supply mode, track structure, installation mode, voltage level, etc. of the lighting track 1 can be selected based on the actual implementation scenario.

[0024] As in a specific implementation scenario, the lighting track 1 at least includes a conductor that can access the mains. For example, the mains voltage in country A is 120V, and the corresponding lighting track 1 is a track device that can carry the mains voltage of 120V. Such a track device at least includes a power supply conductor and a return flow conductor. Specifically, the power supply conductor can be a live wire L, and the return flow conductor can be a neutral wire N. In order to improve the power supply flexibility of the lighting track 1, the power supply conductor can be one or more, including but not limited to two, three, four, which will not be described below.

[0025] Referring to Figures 1 to 4 , the power taking device 2 provided by the present application includes a housing 21, a rotating member 22, a circuit board 23, a necessary power taking member 24, at least two candidate power taking members 25, and a contact assembly 26. Wherein, The power taking device 2 can be an independent device, or can be integrated into other functional devices, such as a power supply device. If the power taking device 2 is independently set, the housing 21 is the shell of the power taking device 2; if the power taking device 2 is integrated into other functional devices, the housing 21 is the shell of the corresponding functional device. It can be understood that the shape of the housing 21 is adapted to the shape of the installation space 11 of the lighting track 1.

[0026] The rotating member 22 is substantially in a cylindrical structure, connected to the shell 21, and can rotate along the axis of the rotating member 22. By controlling the rotation of the rotating member 22, the connection, power taking and separation of the power taking device 2 relative to the lighting track 1 can be realized. In the case of connecting the power taking device 2 to the lighting track 1, the axis of the rotating member 22 is perpendicular to the opening position of the lighting track 1, and extends along the depth direction of the lighting track 1.

[0027] In an implementation scenario, the shell 21 is the shell of a driving power supply, and the circuit board 23 is fixed inside the shell 21, for converting input power into direct current suitable for stable operation of the lighting device, and providing necessary protection and control functions. The circuit board 23 is provided with a first electrical connection member 231 and a second electrical connection member 232. The first electrical connection member 231 and the second electrical connection member 232 can be reeds, spring pins or other alternative elastic conductive contact members. The end portions of the first electrical connection member 231 and the second electrical connection member 232 extend to the rotating member 22 to contact the power taking members of the rotating member 22, including the necessary power taking member 24 and the candidate power taking member 25, for contact power taking.

[0028] The necessary power taking member 24 can be a reed, a spring pin or other alternative elastic conductive contact member. The necessary power taking member 24 is fixed to the rotating member 22, the middle part of which is embedded in the inside of the rotating member 22, and the first end and the second end are exposed relative to the outer wall of the rotating member 22 by bending to form an elastic structure. Among them, the first end of the necessary power taking member 24 is perpendicular to the axis of the rotating member 22, and is located on the outer ring wall of the rotating member 22, corresponding to the common return conductor 13 of the lighting track 1.

[0029] When connecting the power taking device 2 to the lighting track 1, the power taking device 2 is embedded in the mounting space 11 of the lighting track 1, and the rotating member 22 is rotated to the power taking position corresponding to the lighting track 1, the first end of the necessary power taking member 24 is connected to the common return conductor 13 of the lighting track 1, the second end is in contact with the first electrical connection member 231, and the electrical connection of the common return conductor 13, the necessary power taking member 24, the first electrical connection member 231 and the circuit board 23 is realized. Among them, the common return conductor 13 can be an alternating current zero line, a direct current negative electrode, etc., and in a specific implementation scenario, the common return conductor 13 is a common zero line N.

[0030] The at least two candidate power taking elements 25 can be reeds, spring pins or other alternative elastic conductive contact elements. The at least two candidate power taking elements 25 are fixed on the rotating element 22, and the middle parts are located inside the rotating element 22, and the first end and the second end are exposed to the outer wall of the rotating element 22 by bending to form an elastic structure. The first end is perpendicular to the axis and is located on the outer ring wall of the rotating element 22 and corresponds to the candidate power supply conductor 12 of the lighting track 1. The second end is fixed on the outer ring wall of the rotating element 22. Further, the second ends of the plurality of candidate power taking elements 25 are equidistantly arranged on the outer ring wall of the rotating element 22 and are located at the same height position of the outer ring wall. When the rotating element 22 rotates to the power taking position, the first end of each candidate power taking element 25 is connected with a different candidate power supply conductor 12 of the lighting track 1. The candidate power supply conductor 12 can be an independently controllable live wire L. It can be understood that the adjacent power taking elements have an electrical isolation gap meeting the safety requirements.

[0031] The contact assembly 26 is rotationally connected to the rotating element 22 and includes a first contact element 261 and a second contact element 262 which are integrally formed. The first contact element 261 is always in contact with the second electrical connection element 232. When the contact assembly 26 rotates relative to the rotating element 22, the second contact element 262 synchronously rotates relative to the second ends of the plurality of candidate power taking elements 25, and when it rotates to a specific position, it is in contact with the second end of one of the candidate power taking elements 25. In the embodiment of the application, the specific position of the contact assembly 26 when the second contact element 262 is in contact with the second end of any candidate power taking element 25 is determined as the target position, and the number of corresponding target positions is consistent with the number of candidate power taking elements 25. When the contact assembly 26 rotates to one of the target positions relative to the rotating element 22, the second contact element 262 is in contact with the candidate power taking element 25 corresponding to the target position. Thus, by adjusting the position of the contact assembly 26, the second electrical connection element 232 can be in contact with one of the candidate power taking elements 25 through the second contact element 262. Thus, the electrical connection of one of the candidate power supply conductors 12, one of the candidate power taking elements 25, the second electrical connection element 232 and the circuit board 23 can be realized.

[0032] In this embodiment, the power taking device 2 can select any candidate power supply conductor 12 on the lighting track 1 for power taking, and the lighting devices on the lighting track 1 can be divided into independent control groups corresponding to the number of candidate power supply conductors 12, and each control group can be controlled independently, greatly improving the flexibility, adjustability and functionality of lighting design.

[0033] The power taking device 2 has compact structure and high integration, and no additional circuit design is needed by using the circuit board 23. The overall size of the power taking device 2 can be reduced under the premise of ensuring the power taking function, and the overall size of the functional device integrated with the power taking device 2 can be reduced, such as the overall size of the driving power supply, the track adapter and the like, the loadable quantity of the track as a whole is improved, and the lighting scene is further enriched.

[0034] Referring to Figures 4 to 6 In an implementable manner, the number of the candidate power taking components 25 does not exceed the number of the candidate power supply conductors 12 of the lighting track 1 to be adapted. For example, the candidate power supply conductors 12 have three, and the number of the corresponding candidate power taking components 25 can be selected as one, two or three.

[0035] The embodiment of the present application can determine the number of the candidate power supply conductors 12 of the lighting track 1 to be adapted according to the target scene, correspondingly determine the number of the candidate power taking components 25, and adapt the power taking device 2 and the lighting track 1. In a specific implementation scene, the candidate power supply conductors 12 of the lighting track 1 have three, the corresponding candidate power taking components 25 have three, and the lighting devices connected to the lighting track 1 by the power taking device 2 can form three independent control groups and be controlled respectively.

[0036] In an implementable manner, the power taking device 2 further comprises: a control knob 27 coaxially sleeved to the rotating member 22 and relatively rotated with the rotating member 22; and a contact assembly 26 coaxially arranged to the control knob 27 and synchronously rotated with the control knob 27.

[0037] One end face of the columnar structure of the rotating member 22 is coaxially provided with a positioning column 221, and the control knob 27 and the contact assembly 26 are sequentially sleeved on the positioning column 221, so that the control knob 27, the contact assembly 26 and the rotating member 22 are coaxially arranged. The contact assembly 26 and the control knob 27 are fixed by a fixing structure, so as to realize synchronous rotation of the contact assembly 26 and the control knob 27. The fixing structure can include but is not limited to clamping, bonding, encapsulation, threaded connection and the like.

[0038] In an implementable manner, the control knob 27 comprises: an isolation part 271 sleeved to the outer periphery of the second end of the candidate power taking component 25 and arranged between the second end of the candidate power taking component 25 and the second contact part 262, and provided with a contact gap 272, the second contact part 262 passes through the contact gap 272 and contacts the candidate power taking component 25; and a control part 273 sleeved to the outer periphery of the second contact part 262 and forming an isolation ring groove 274 between the isolation part 271, and the second contact part 262 is embedded in the isolation ring groove 274.

[0039] The isolation part 271 can be a sleeve structure with an end face, sleeved on the rotating part 22, and the cylinder wall of the isolation part 271 is located at the outer periphery of the second end of the candidate power taking part 25. The outer side of the cylinder wall of the isolation part 271 is provided with the second contact part 262, so as to realize the isolation of the candidate power taking part 25 and the second contact part 262. The cylinder wall of the isolation part 271 is provided with a notch for the isolation part 271 to pass through, so as to ensure that only the second contact part 262 at the notch position contacts the candidate power taking part 25, thereby ensuring the stability of the power taking structure.

[0040] The control part 273 includes a knob with a friction pattern, which is used by a user to rotate, connected to the outer periphery of the isolation part 271, and forms an isolation ring groove 274 between the isolation part 271, in which the second contact part 262 is embedded. The positioning and protection of the second contact part 262 are realized.

[0041] In an implementation manner, the outer ring wall is provided with a positioning recess 222, and the second end of the candidate power taking part 25 is embedded in the positioning recess 222. The surface of the candidate power taking part 25 is lower than the opening of the positioning recess 222. The second contact part 262 has a positioning protrusion 264, which protrudes towards the contact notch 272. When the contact assembly 26 rotates relative to the rotating part 22 to the target position, the positioning protrusion 264 contacts the second end of the candidate power taking part 25 corresponding to the target position. The positioning power taking structure formed thereby can ensure that the second contact part 262 contacting the candidate power taking part 25 will not be separated from the positioning recess 222 without sufficient external force, thereby ensuring that the power taking device 2 can stably take power.

[0042] In an implementation manner, the isolation part 271 is provided with a positioning groove 275 at the end face away from the rotating part 22, and the first contact part 261 is embedded in the positioning groove 275. The positioning groove 275 and the isolation ring groove 274 are communicated through a limiting channel 276. The first contact part 261 and the second contact part 262 have a connecting part 263, and the connecting part 263 is embedded in the limiting channel 276. The circumferential direction of the isolation part 271 is further provided with a positioning hook 277, which abuts to the surface of the second contact part 262, so as to limit the second contact part 262 from separating from the isolation ring groove 274.

[0043] Specifically, the end face of the isolation part 271 is provided with a positioning groove 275 matched with the shape of the first contact part 261. The first contact part 261 is in the shape of a disc, or the first contact part 261 is a sheet material covering the relative motion track of the first electrical connecting part 231. The first contact part 261 and the second contact part 262 are connected by a connecting part 263, which is embedded in a limiting channel 276. The limiting structure is formed by the connecting part 263, thereby ensuring the synchronous rotation of the control assembly and the contact assembly 26. A positioning hook 277 is located at the opening of the isolation ring groove 274, thereby limiting the displacement of the second contact part 262 and further improving the connection stability of the control assembly and the contact assembly 26.

[0044] In an implementation, the rotating part 22 is provided with a power taking groove 223 corresponding to the position of the first electrical connecting part 231, and the necessary power taking part 24 is embedded on the surface of the power taking groove 223. The first electrical connecting part 231 is inserted into the power taking groove 223, and always contacts with the necessary power taking part 24 during the rotation of the rotating part 22.

[0045] Specifically, the thickness of the power taking groove 223 can be consistent with or slightly thicker than the thickness of the first electrical connecting part 231. The necessary power taking part 24 is exposed on one surface of the power taking groove 223. Thus, when the first electrical connecting part 231 is inserted into the power taking groove 223, the other surface of the power taking groove 223 can position the first electrical connecting part 231, thereby ensuring the connection stability of the first electrical connecting part 231 and the necessary power taking part 24.

[0046] Referring to Figure 2 and Figure 3 In an implementation, the shell 21 is provided with a receiving cavity 211, and the rotating part 22 is rotationally connected to the receiving cavity 211. The shell 21 is also provided with a power taking opening 212 corresponding to the position of the receiving cavity 211. When the rotating part 22 rotates to a power taking position, the necessary power taking part 24 and the candidate power taking part 25 pass through the power taking opening 212. When the rotating part 22 rotates to a separation position away from the power taking position, the necessary power taking part 24 and the candidate power taking part 25 are located in the receiving cavity 211. The shape of the receiving cavity 211 is matched with the shape of the rotating part 22, thereby positioning the rotating part 22 and ensuring the stability of the rotation of the rotating part 22. The shape of the power taking opening 212 is matched with the shape of the power taking part, thereby ensuring the rotation stability.

[0047] In an implementation, the rotating part 22 is also provided with a clamping part 224. When the rotating part 22 rotates to the power taking position, the clamping part 224 is connected with the clamping groove 14 of the lighting track 1. When the rotating part 22 rotates to the separation position away from the power taking position, the clamping part 224 is separated from the clamping groove 14 of the lighting track 1.

[0048] The clamping piece 224 can be a clamping sheet corresponding to the position of the power taking piece, so that when the rotating piece 22 rotates to the power taking position, the clamping piece 224 is connected with the clamping groove 14 of the lighting track 1, and the mechanical connection between the power taking device 2 and the lighting track 1 is realized. Correspondingly, when the rotating piece 22 rotates to the separation position away from the power taking position, the clamping piece 224 is separated from the clamping groove 14 of the lighting track 1.

[0049] In an implementable manner, one end of the rotating piece 22 is rotationally connected with a locking sheet 225, and the locking sheet 225 is used to control the rotation of the rotating piece 22. The locking groove 213 matched with the locking sheet 225 is formed on the shell 21.

[0050] The locking sheet 225 is rotationally connected to one end of the rotating piece 22 facing the outer surface of the shell 21, and the locking groove 213 is formed on the outer surface of the shell 21 and is matched with the shape of the locking sheet 225. When the locking sheet 225 rotates to be embedded in the locking groove 213, the locking of the rotating piece 22 can be realized, and the rotating piece 22 cannot rotate. When the locking sheet 225 rotates to be separated from the locking groove 213, the unlocking of the rotating piece 22 can be realized, and the rotating piece 22 can rotate. When the rotating piece 22 rotates, the locking sheet 225 can be used as a hand-holding sheet to facilitate control.

[0051] Further, the control knob 22 and the locking sheet 225 are separately arranged at two ends of the rotating piece 22. When the power taking device is connected with the lighting track for work, the control knob 22 is located inside the lighting track, and the locking sheet 225 is embedded in the locking groove, so that the displacement of the control knob and the locking sheet caused by external factors can be avoided, and the stability of the equipment in the track power taking process is ensured.

[0052] The present application provides a driving power supply in the second aspect, which has the power taking device 2 according to any one of the first aspect of the present application.

[0053] In an implementable manner, the driving power supply has an expansion function module, and the function module is at least one of a dimming control module and a DALI control module.

[0054] The present application provides a track lamp in the third aspect, which has the power taking device 2 according to any one of the first aspect of the present application or the driving power supply according to any one of the second aspect of the present application.

[0055] It should be understood that the steps shown above can be reordered, added, or deleted. For example, the steps described in the present application can be executed in parallel, sequentially, or in different orders, as long as the desired results of the technical solutions disclosed in the present application can be achieved, and the present application does not limit this.

[0056] In addition, the terms "first", "second", etc. are used only for the purpose of description, and should not be understood as indicating or implying relative importance or an indicated number of technical features. Therefore, the features defined as "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise specifically limited.

[0057] The above description is merely a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art can easily think of changes or replacements within the technical scope disclosed by the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A power supply device adapted to lighting tracks, characterized in that, include: Shell (21); Rotating component (22) is rotatably connected to the housing (21); The circuit board (23) is fixed to the housing (21) and is provided with a first electrical connector (231) and a second electrical connector (232), both of which extend toward the rotating member (22). A necessary power-taking component (24) is disposed on the rotating component (22). When the rotating component (22) rotates to the power-taking position corresponding to the lighting track (1), the first end of the necessary power-taking component (24) is connected to the common return conductor (13) of the lighting track (1), and the second end is in contact with the first electrical connector (231). At least two candidate power-collecting components (25) are disposed on the rotating component (22). When the rotating component (22) rotates to the power-collecting position, the first end of each candidate power-collecting component (25) is connected to a different candidate power supply conductor (12) of the lighting track (1), and the second end is fixed to the outer ring wall of the rotating component (22). The contact assembly (26) is rotatably connected to the rotating member (22) and includes an integrally formed first contact member (261) and a second contact member (262). When the contact assembly (26) rotates relative to the rotating member (22) to the target position, the first contact member (261) contacts the second electrical connector (232), and the second contact member (262) contacts the second end of the candidate power-taking member (25) corresponding to the target position. There are multiple target locations, and the candidate power-collecting devices (25) corresponding to different target locations are different.

2. The power extraction device according to claim 1, characterized in that, The number of candidate power-generating components (25) shall not exceed the number of candidate power supply conductors (12) of the lighting track (1) to be adapted.

3. The power extraction device according to claim 1, characterized in that, The power supply device (2) further includes: The control knob (27) is coaxially sleeved to the rotating part (22) and rotates relative to the rotating part (22); The contact component (26) is coaxially mounted to the control knob (27) and rotates synchronously with the control knob (27).

4. The power extraction device according to claim 3, characterized in that, The control knob (27) includes: An isolation part (271) is sleeved on the outer periphery of the second end of the candidate power-collecting component (25), and is disposed between the second end of the candidate power-collecting component (25) and the second contact (262). It also has a contact notch (272), through which the second contact (262) passes and contacts the candidate power-collecting component (25). The control unit (273) is sleeved on the outer periphery of the second contact member (262) and forms an isolation annular groove (274) between it and the isolation unit (271), and the second contact member (262) is embedded in the isolation annular groove (274).

5. The power extraction device according to claim 4, characterized in that, The outer ring wall is provided with a positioning recess (222), the second end of the candidate power-collecting component (25) is embedded in the positioning recess (222), and the surface of the candidate power-collecting component (25) is lower than the opening of the positioning recess (222); The second contact (262) has a positioning protrusion (264) that protrudes toward the contact notch (272); When the contact assembly (26) rotates relative to the rotating member (22) to the target position, the positioning protrusion (264) contacts the second end of the candidate power-taking member (25) corresponding to the target position.

6. The power extraction device according to claim 3, characterized in that, The isolation part (271) has a positioning groove (275) on its end face facing away from the rotating member (22), and the first contact member (261) is embedded in the positioning groove (275). The positioning groove (275) and the isolation ring groove (274) are connected by a limiting channel (276), and the first contact member (261) and the second contact member (262) have a connecting part (263), which is embedded in the limiting channel (276); The isolation part (271) is also provided with a positioning hook (277) in the circumferential direction. The positioning hook (277) abuts against the surface of the second contact member (262) to restrict the second contact member (262) from disengaging from the isolation annular groove (274).

7. The power extraction device according to claim 1, characterized in that, The rotating component (22) has a power-collecting slot (223) at the position corresponding to the first electrical connector (231), and the necessary power-collecting component (24) is embedded in the surface of the power-collecting slot (223); The first electrical connector (231) is inserted into the power collection slot (223) and is always in contact with the necessary power collection component (24) during the rotation of the rotating component (22).

8. The power extraction device according to claim 1, characterized in that, The housing (21) has a receiving cavity (211), the rotating member (22) is rotatably connected to the receiving cavity (211), and the housing (21) also has a power outlet (212), the power outlet (212) being positioned corresponding to the receiving cavity (211); When the rotating member (22) rotates to the power-taking position, the necessary power-taking member (24) and the candidate power-taking member (25) pass through the power-taking port (212); When the rotating member (22) rotates to a separated position away from the power-taking position, the necessary power-taking member (24) and the candidate power-taking member (25) are located in the receiving cavity (211).

9. The power extraction device according to claim 8, characterized in that, The rotating component (22) is also provided with a snap-fit ​​component (224). When the rotating component (22) rotates to the power-taking position, the snap-fit ​​component (224) is connected to the snap-fit ​​groove (14) of the lighting track (1). When the rotating member (22) rotates to a separation position away from the power-taking position, the snap-fit ​​member (224) separates from the snap-fit ​​groove (14) of the lighting track (1).

10. The power extraction device according to claim 1, characterized in that, One end of the rotating component (22) is rotatably connected to a locking piece (225), which is used to control the rotation of the rotating component (22). The housing (21) is provided with a locking groove (213) that matches the locking piece (225).

11. A driving power supply, characterized in that, It has a power extraction device as described in any one of claims 1 to 10.

12. The driving power supply according to claim 11, characterized in that, The driving power supply is equipped with an extended function module, which is at least one of a dimming control module and a DALI control module.

13. A track lighting fixture, characterized in that, It has a power supply device as described in any one of claims 1 to 10, or a drive power supply as described in claim 11 or 12.

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