Rotary electrical connector and synchronously height-adjustable light

Abstract

Rotary electrical connector, characterized in that the rotary electrical connector comprises a stationary plate and a rotating plate which are rotatable relative to each other, wherein contact springs are provided between the stationary plate and the rotating plate, and the contact springs establish an electrical connection between the conductor tracks of the stationary plate and the rotating plate during relative rotation or when at rest.

Description

Technical field

[0001] The invention relates to the technical field of luminaires, in particular a rotary electrical connector and a synchronously height-adjustable luminaire. State of the art

[0002] A lamp is a lighting device frequently used in everyday life. Since a height-adjustable lamp offers a convenient lifting and lowering function, it can adapt to lighting requirements in different positions or at different heights, making it popular with users and widely used.

[0003] A height-adjustable luminaire typically comprises a stationary unit and a lifting unit to which a luminaire is attached. The stationary unit can be mounted on either a wall or a ceiling surface. At least two live wires extend from the inside of the stationary unit to the outside and are connected to the lifting unit. These live wires not only supply power but are also permanently connected at their ends to the lifting unit to enable it to be raised or lowered. However, in state-of-the-art height-adjustable luminaires, drive motors are usually provided on both sides within the stationary unit. Each drive motor's rotating output is connected to a corresponding live wire to wind or unwind the wire.If, in practical application, the two drive motors do not operate synchronously, the power cables on the left and right sides may have different lengths, causing the lifting unit, on which the light is mounted, to assume a tilted position. This not only impairs the lighting effect but also detracts from the overall appearance.

[0004] Therefore, an optimization and improvement of the internal structure of a height-adjustable luminaire is necessary so that the current-carrying lines are of the same length on both sides and can be moved up and down synchronously in order to improve the operational reliability of the height-adjustable luminaire in practical application as well as the overall appearance. Content of the present invention

[0005] The main objective of the invention is to provide a rotary electrical connector and, furthermore, to provide a synchronously height-adjustable luminaire using the rotary electrical connector in order to ensure a synchronous lifting and lowering movement of the height-adjustable luminaire as well as reliable use and at the same time to reduce manufacturing costs.

[0006] To solve the above problem, a rotary electrical connector is proposed, comprising a stationary plate and a rotating plate that are rotatable relative to each other, wherein contact springs are provided between the stationary plate and the rotating plate, and wherein the contact springs establish an electrical connection between the conductor tracks of the stationary plate and the rotating plate during relative rotation or when stationary.

[0007] Preferably, the contact spring comprises a fastening end and a spring end, wherein the fastening end is rigidly electrically connected to the conductor track of the stationary plate and the spring end is in sliding electrical contact with the conductor track of the rotating plate, caused by the relative rotation; or wherein the fastening end is rigidly electrically connected to the conductor track of the rotating plate and the spring end is in sliding electrical contact with the conductor track of the stationary plate, caused by the relative rotation.

[0008] Preferably, the stationary plate has a stationary plate inner conductor track and a stationary plate outer conductor track, and the rotating plate has a rotating plate inner conductor track and a rotating plate outer conductor track, wherein at least one contact spring electrically connects the stationary plate inner conductor track to the rotating plate inner conductor track, and wherein at least one contact spring electrically connects the stationary plate outer conductor track to the rotating plate outer conductor track.

[0009] Preferably, at least a part of the stationary plate inner conductor track and at least a part of the rotating plate inner conductor track are arranged concentrically, and at least a part of the stationary plate outer conductor track and at least a part of the rotating plate outer conductor track are arranged concentrically.

[0010] Preferably, the rotary electrical connector further comprises a drive motor, wherein a rotating shaft of the drive motor is connected to the rotary plate in a position-secured manner, wherein a surface of the rotary plate is connected to a winding drum, and wherein the winding drum winds or unwinds a plurality of current-carrying conductors in axially different positions.

[0011] Preferably, the rotary electrical connector further comprises a connector housing, wherein the stationary plate, the rotary plate and the winding drum are arranged inside the connector housing, wherein a motor housing of the drive motor is connected to the connector housing, and wherein the rotating shaft of the drive motor projects into the connector housing and is connected to the rotary plate.

[0012] Preferably, a plurality of first contact springs are connected to the stationary plate inner conductor track or to the rotating plate inner conductor track, and a plurality of second contact springs are connected to the stationary plate outer conductor track or to the rotating plate outer conductor track, wherein the first contact springs electrically connect the stationary plate inner conductor track to the rotating plate inner conductor track, and wherein the second contact springs electrically connect the stationary plate outer conductor track to the rotating plate outer conductor track.

[0013] Furthermore, a synchronously height-adjustable luminaire using the rotary electrical connector is proposed, comprising a mounting housing, wherein the rotary electrical connector is arranged within the mounting housing, wherein fastening ends of a plurality of current-carrying conductors are electrically connected to different conductor tracks of the rotary plate, wherein outwardly led conductor ends of the current-carrying conductors are successively guided over deflection pulleys arranged within the mounting housing and through a conductor feedthrough of the mounting housing and are connected to a lifting or lowering lifting unit, and wherein the current-carrying conductors are electrically connected to a luminaire.

[0014] Preferably, a dimmer is provided inside the mounting housing, wherein the dimmer is electrically connected at one end to an external power supply and at another end to the stationary plate, and wherein the dimmer is furthermore wirelessly connected to a remote control.

[0015] Preferably, a position switch is arranged on opposing surfaces of the mounting housing and the lifting unit, wherein the position switch is arranged in a circuit between the drive motor and the external power supply; and wherein, after the lifting unit has reached a highest position, the lifting unit touches the position switch and thereby interrupts the electrical connection between the drive motor and the external power supply.

[0016] Compared to the prior art, the technical solution of the invention has the following advantages: The rotary electrical connector according to the technical solution of the invention is characterized in that contact springs are provided between the conductor tracks of the stationary plate and the rotary plate, so that a reliable electrical connection is ensured during the relative rotation of the rotary plate with respect to the stationary plate or even when stationary. If the rotary electrical connector is used in a synchronously height-adjustable luminaire, the rotary plate and the winding drum are driven synchronously by a single drive motor, so that the winding drum winds or unwinds current-carrying conductors that are arranged or routed in different directions.This not only provides the power supply to the light for illumination, but also ensures that the different current-carrying lines raise or lower the light synchronously, thus guaranteeing a good lighting effect and achieving an overall appealing appearance.

[0017] At the same time, the technical solution of the invention features a single centrally located motor to perform the winding and unwinding functions. This ensures not only the synchronization of the current-carrying lines and a uniform effect length, but also reduces overall manufacturing costs. Brief description of the characters

[0018] To more clearly explain the technical solutions in the embodiments of the invention or in the prior art, the drawings required in the description of the embodiments or the prior art are briefly presented below. It is understood that the drawings listed in the following description only show some embodiments of the invention. A person skilled in the art can derive further drawings from the structures depicted in these drawings without any inventive step. Fig. Figure 1 shows a schematic perspective view of the rotary electrical connector according to the invention. Fig. Figure 2 shows a schematic exploded view of the rotary electrical connector according to the invention. Fig. Figure 3 shows a schematic representation of the turntable from a different viewpoint. Fig. Figure 4 shows a schematic side view of the rotary electrical connector from a different perspective. Fig. Figure 5 shows a schematic representation of the internal structure of the synchronously height-adjustable luminaire according to the invention. Reference symbol list:

[0019] 1 Stationary board; 101 Stationary board inner conductor track; 102 Stationary board outer conductor track; 103 Through hole; 2 Turntable; 201 Turntable inner conductor track; 202 Turntable outer conductor track; 203 Positioning hole; 204 Radial projection; 3 Contact spring; 301 First contact spring; 302 Second contact spring; 4 Drive motor; 401 Rotary shaft; 402 Positioning notch; 403 Positioning pin; 5 winding drum; 501 lower separating disc; 502 lower winding disc; 503 upper separating disc; 504 upper winding disc; 505 lower winding chamber; 506 upper winding chamber; 6 first live wire; 7 second live wire; 8 Drive slot; 9 Mounting housing; 10 Swivel electrical connector; 11 Deflection pulley; 12 Cable entry; 13 Lifting unit; 14 Light; 15 Dimmer; 16 External power supply; 17 Remote control; 18 Position switch.

[0020] The realization of the purpose of the invention, as well as its functional features and advantages, will be further explained with reference to the exemplary embodiments and the drawings. Detailed descriptions

[0021] The technical solutions in the exemplary embodiments of the invention are described clearly and completely below with reference to the drawings. Obviously, the described exemplary embodiments represent only a part of the embodiments of the invention and not all of them. All other embodiments that a person skilled in the art obtains from the exemplary embodiments of the invention without inventive step fall within the scope of protection of the invention.

[0022] The invention provides a rotary electrical connector.

[0023] It will be directed to the Fig. Reference is made to Figures 1 to 4. The rotary electrical connector according to the embodiment of the invention comprises a stationary plate 1 and a rotating plate 2, which are rotatable relative to each other. In the embodiment, the rotating plate 2 can rotate relative to the stationary plate 1. Furthermore, contact springs 3 are provided between the conductor tracks of the stationary plate 1 and the conductor tracks of the rotating plate 2. When the stationary plate 1 and the rotating plate 2 are in a state of relative rotation, or when the stationary plate 1 and the rotating plate 2 are stationary relative to each other, the contact springs 3 can establish an electrical connection between the conductor tracks in the stationary plate 1 and the conductor tracks in the rotating plate 2.

[0024] Specifically, according to the exemplary embodiment, the stationary plate 1 has a stationary plate inner conductor track 101 and a stationary plate outer conductor track 102. The stationary plate inner conductor track 101 is connected to a plurality of first contact springs 301, and the stationary plate outer conductor track 102 is connected to a plurality of second contact springs 302. The rotating plate 2 has a rotating plate inner conductor track 201 and a rotating plate outer conductor track 202. As in Fig. As shown in Figure 3, the stationary plate inner conductor track 101 is electrically connected to the rotating plate inner conductor track 201 by means of the first contact springs 301, and the stationary plate outer conductor track 102 is electrically connected to the rotating plate outer conductor track 202 by means of the second contact springs 302.

[0025] In other embodiments of the invention, the first contact springs 301 can be fixedly arranged on the stationary plate's inner conductor track 101, while the second contact springs 302 are fixedly arranged on the rotating plate's outer conductor track 202. Alternatively, the first contact springs 301 can be fixedly arranged on the rotating plate's inner conductor track 201, and the second contact springs 302 can be fixedly arranged on the stationary plate's outer conductor track 102. Alternatively, the first contact springs 301 can be fixedly arranged on the rotating plate inner conductor track 201, and the second contact springs 302 can be fixedly arranged on the rotating plate outer conductor track 202, so that the stationary plate inner conductor track 101 and the rotating plate inner conductor track 201 are electrically connected by means of the first contact springs 301 and the stationary plate outer conductor track 102 and the rotating plate outer conductor track 202 are electrically connected by means of the second contact springs 302.

[0026] Preferably, at least a portion of the stationary plate inner conductor track 101 and the rotating plate inner conductor track 201 are arranged concentrically, and at least a portion of the stationary plate outer conductor track 102 and the rotating plate outer conductor track 202 are arranged concentrically. Since the rotating plate 2 and the stationary plate 1 are rotatably arranged relative to each other, the concentric arrangement of a portion of the stationary plate inner conductor track 101 and a portion of the rotating plate inner conductor track 201 ensures that an electrical connection between the stationary plate inner conductor track 101 and the rotating plate inner conductor track 201 is maintained via the first contact springs 301 during the relative rotation between the rotating plate 2 and the stationary plate 1.Accordingly, by arranging part of the stationary plate outer conductor track 102 and part of the rotating plate outer conductor track 202 concentrically, it can be ensured that an electrical connection between the stationary plate outer conductor track 102 and the rotating plate outer conductor track 202 is maintained via the second contact springs 302 during the relative rotation between the rotating plate 2 and the stationary plate 1.

[0027] Preferably, the first contact springs 301 and the second contact springs 302 each comprise a mounting end and a spring end, that is, the first contact springs 301 and the second contact springs 302 are each designed as approximately U-shaped, elastic contact elements. The mounting end of each contact spring is rigidly and conductively connected to the stationary plate's inner conductor track 101 or outer conductor track 102, for example, by means of a soldering process. When the stationary plate 1 and the rotating plate 2 are brought close together, the respective spring end rests resiliently against the rotating plate's inner conductor track 201 or outer conductor track 202, such that the axially opposite conductor tracks of the stationary plate 1 and the rotating plate 2 are electrically continuous.

[0028] The rotary electrical connector further comprises a drive motor 4. A rotary shaft 401 of the drive motor 4 extends through the stationary plate 1 and is connected to the rotary plate 2 in a positionally secured manner. In this embodiment, a through-hole 103 is provided in a central area of ​​the stationary plate 1, through which the rotary shaft 401 of the drive motor 4 passes. A positioning notch 402 is provided on a rotating end section of the rotary shaft 401, which interacts with a positioning bore 203 in the center of the rotary plate 2. The positioning bore 203 can be designed as a D-shaped bore to create a fixed connection between the rotary shaft 401 and the rotary plate 2, so that the rotary plate 2 is set into rotation by the rotary shaft 401.

[0029] The surface of the rotary plate 2 is connected to a winding drum 5, the winding drum 5 winding or unwinding a plurality of current-carrying conductors in axially different positions. In the present embodiment, the technical solution comprises two current-carrying conductors, namely a first current-carrying conductor 6 and a second current-carrying conductor 7, see Fig. 2. The winding drum 5 comprises an axially arranged lower cutting disc 501, a lower winding disc 502, an upper cutting disc 503 and an upper winding disc 504, wherein the lower cutting disc 501, the lower winding disc 502, the upper cutting disc 503 and the upper winding disc 504 are simultaneously axially fixed to the rotary plate 2 by means of screws or other fastening elements. Since the outer diameter of the lower cutting disc 501 and the outer diameter of the upper cutting disc 503 are each smaller than the outer diameter of the lower winding disc 502 and the outer diameter of the upper winding disc 504, a lower winding chamber 505 is formed by the rotary plate 2, the lower cutting disc 501 and the lower winding disc 502, and an upper winding chamber 506 is formed by the lower winding disc 502, the upper cutting disc 503 and the upper winding disc 504.In practical application, the first current-carrying conductor 6 is located within the lower winding chamber 505, and the second current-carrying conductor 7 is located within the upper winding chamber 506. Furthermore, an end section of the first current-carrying conductor 6 runs through the body of the rotary plate 2 and is electrically connected to the outer conductor track 202 of the rotary plate. An end section of the second current-carrying conductor 7 extends from the upper winding chamber 506 through a surface through-hole in the lower winding disk 502 and is guided downwards along a lateral recess in the lower separating disk 501 through the rotary plate 2 to be connected to the radial projection 204 of the inner conductor track 201 of the rotary plate 2.A corresponding recess can be provided on an outer edge area of ​​the lower separating disc 501 to facilitate the connection of the second current-carrying conductor 7 with the corresponding conductor track of the rotating plate 2.

[0030] Preferably, according to the invention, drive grooves 8 are provided on the surfaces of the lower winding disc 502, the upper separating disc 503, and the upper winding disc 504, and the positioning notch 402 of the drive motor 4 has a radial positioning pin 403. The positioning pin engages simultaneously in the drive grooves 8 of the aforementioned three components to ensure reliable power transmission from the drive motor 4 to the aforementioned three components.

[0031] Furthermore, in other embodiments of the invention, the rotary electrical connector is additionally provided with a connector housing, wherein the stationary plate 1, the rotary plate 2, and the winding drum 5 are arranged inside the connector housing, and wherein a motor housing of the drive motor 4 is connected to the connector housing. The rotating shaft 401 of the drive motor 4 projects into the interior of the connector housing and is connected to the rotary plate 2. This causes the drive motor 4 to rotate the rotary plate 2 and the winding drum 5 in order to wind or unwind the first current-carrying conductor 6 and the second current-carrying conductor 7, thus allowing them to be received or released. The integration of the aforementioned components within the connector housing facilitates subsequent assembly and replacement for the user.Furthermore, this prevents dust or similar substances from getting onto the surfaces of the contact springs, thus ensuring their proper electrical conductivity and function.

[0032] It will be directed to the Fig.Reference is made to Figures 1 to 5. Furthermore, the invention provides a synchronously height-adjustable luminaire using the rotary electrical connector described above. The synchronously height-adjustable luminaire comprises a mounting housing 9, which the user can mount on a ceiling surface or a wall surface to facilitate easy installation. The rotary electrical connector 10 is arranged within the mounting housing 9, preferably in a central area of ​​the mounting housing 9. A first end of the first current-carrying conductor 6 and a first end of the second current-carrying conductor 7 are each connected to different conductor tracks on the surface of the rotary plate 2, and sections of the first current-carrying conductor 6 and the second current-carrying conductor 7 are wound within different winding spaces of the winding drum 5.The externally routed ends of the power-carrying cables are guided over deflection pulleys 11 arranged inside the mounting housing 9, then through a cable gland 12 of the mounting housing 9, and are electrically connected to the light 14 of the lifting unit 13. In the invention, the first power-carrying cable 6 and the second power-carrying cable 7 not only supply power but also serve as suspension points for the lifting unit 13. In operation, the winding drum 5 is set in rotation by the drive motor 4, so that sections of the first power-carrying cable 6 are taken up in the lower winding chamber 505 and sections of the second power-carrying cable 7 are taken up in the upper winding chamber 506, whereby the two power-carrying cables 6 and 7 simultaneously raise both ends of the lifting unit 13 synchronously.If the drive motor 4 is controlled in the opposite direction, causing the winding drum 5 to rotate in the opposite direction, the lifting unit 13 can be moved downwards by its own weight due to the suspended mounting of the light, thereby synchronously releasing the cable sections previously stored in the winding drum 5. This lowers the lifting unit 13, allowing the user to adjust the light 14 on the lifting unit 13 to a desired height or position to provide appropriate lighting.

[0033] Furthermore, a dimmer 15 is provided within the mounting housing 9. One end of the dimmer 15 is electrically connected to the external power supply 16, and the other end of the dimmer 15 is electrically connected to the circuit board 1. The dimmer 15 is also wirelessly connected to the remote control 17. Therefore, in practical application, the user can transmit different dimming / control signals to the dimmer 15 by operating the remote control 17 in order to adjust various lighting effects, such as switching the lighting on and off, warm or cool light, and different brightness levels.

[0034] Preferably, a position switch 18 is mounted on opposite surfaces of the mounting housing 9 and the lifting unit 13, the position switches 18 being connected in series with the drive motor on the left and right sides to close or open the circuit between the drive motor 4 and the external power supply 16. In practical application, after the lifting unit 13 has reached its uppermost position, contact between the lifting unit 13 and the position switch 18 can interrupt the electrical connection between the drive motor 4 and the external power supply 16, thus preventing the drive motor from performing any further upward movement.Of course, a radio / remote control switching module can also be integrated into the drive motor 4, which is wirelessly connected to the remote control 17, so that the user can wirelessly control the drive motor using the remote control 17 in order to operate the drive motor in different directions of rotation or to implement a start / stop operation.

[0035] The foregoing embodiments are merely preferred embodiments of the invention and do not serve to limit the scope of protection of the invention. All equivalent structural modifications made within the scope of the inventive idea based on the description and the drawings, as well as their direct or indirect application in other relevant technical fields, fall within the scope of protection of the invention.

Claims

[1] Rotary electrical connectors, characterized by , that the rotary electrical connector comprises a stationary plate and a rotating plate which are rotatable relative to each other, wherein contact springs are provided between the stationary plate and the rotating plate, and the contact springs establish an electrical connection between the conductor tracks of the stationary plate and the rotating plate when rotating relative to each other or when stationary. [2] Rotary electrical connector according to claim 1, characterized by, that the contact spring comprises a fastening end and a spring end, wherein the fastening end is rigidly electrically connected to the conductor track of the stationary plate and the spring end is in sliding electrical contact with the conductor track of the rotating plate caused by the relative rotation; or the fastening end is rigidly electrically connected to the conductor track of the rotating plate and the spring end is in sliding electrical contact with the conductor track of the stationary plate caused by the relative rotation. [3] Rotary electrical connector according to claim 1, characterized by, that the stationary plate has a stationary plate inner conductor track and a stationary plate outer conductor track, and the rotating plate has a rotating plate inner conductor track and a rotating plate outer conductor track, wherein at least one contact spring electrically connects the stationary plate inner conductor track to the rotating plate inner conductor track, and wherein at least one contact spring electrically connects the stationary plate outer conductor track to the rotating plate outer conductor track. [4] Rotary electrical connector according to claim 3, characterized by , that at least part of the stationary plate inner conductor track and at least part of the rotating plate inner conductor track are arranged concentrically, and that at least part of the stationary plate outer conductor track and at least part of the rotating plate outer conductor track are arranged concentrically. [5] Rotary electrical connector according to claim 3, characterized by, that the rotary electrical connector further comprises a drive motor, wherein a rotating shaft of the drive motor is connected to the rotary plate in a position-secured manner, wherein a surface of the rotary plate is connected to a winding drum, and the winding drum winds or unwinds a plurality of current-carrying conductors in axially different positions. [6] Rotary electrical connector according to claim 5, characterized by , that the rotary electrical connector further comprises a connector housing, wherein the stationary plate, the rotary plate and the winding drum are arranged inside the connector housing, wherein a motor housing of the drive motor is connected to the connector housing, and the rotating shaft of the drive motor projects into the connector housing and is connected to the rotary plate. [7] Rotary electrical connector according to claim 3, characterized by, that a plurality of first contact springs are connected to the stationary plate inner conductor track or to the rotating plate inner conductor track, and a plurality of second contact springs are connected to the stationary plate outer conductor track or to the rotating plate outer conductor track; wherein the first contact springs electrically connect the stationary plate inner conductor track to the rotating plate inner conductor track, and wherein the second contact springs electrically connect the stationary plate outer conductor track to the rotating plate outer conductor track. [8] Synchronously height-adjustable luminaire using the rotary electrical connector according to one of claims 1 to 7, characterized by, that the synchronously height-adjustable luminaire comprises a mounting housing, and the rotary electrical connector is arranged within the mounting housing, wherein fastening ends of a plurality of current-carrying conductors are electrically connected to different conductor tracks of the rotary plate, wherein outwardly led ends of the current-carrying conductors are successively guided over deflection pulleys arranged within the mounting housing and through a conductor feedthrough of the mounting housing and are connected to a lifting or lowering lifting unit, and wherein the current-carrying conductors are electrically connected to a luminaire. [9] Synchronously height-adjustable luminaire according to claim 8, characterized bythat a dimmer is provided within the mounting housing, wherein the dimmer is electrically connected at one end to an external power supply and at another end to the stationary plate, and wherein the dimmer is furthermore wirelessly connected to a remote control. [10] Synchronously height-adjustable luminaire according to claim 9, characterized by , that a position switch is arranged on opposing surfaces of the mounting housing and the lifting unit, wherein the position switch is arranged in an electrical circuit between the drive motor and the external power supply; and wherein, after the lifting unit has reached a top position, the lifting unit touches the position switch and thereby interrupts the electrical connection between the drive motor and the external power supply.

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