Single-wire electric lifter and ceiling lamp using same

Abstract

The invention relates to a single-wire electric lifter which comprises a shell, a limiting cover buckled with the shell, a motor arranged at the bottom of the shell, a current-conducting plate arranged in a buckling space of the shell and the limiting cover and a wire winding device capable of being rotationally connected with the current-conducting plate in an electrified mode. The upper end of the winding device is provided with an inner gear which rotates synchronously with the winding device, the limiting gear is arranged at the upper end of the limiting cover and meshed with the inner gear, and the two limiting switches are arranged on the periphery of the limiting gear at intervals. A protruding part for triggering the limiting switches along with rotation of the limiting gear is arranged on the periphery of the limiting gear, and precise limiting control over the lifting stroke is achieved through cooperation with the two limiting switches arranged at an interval.

Description

Technical Field

[0001] The present application relates to the technical field of lighting equipment, and more particularly to the technical field of a single-wire electric lifter and a chandelier using the same. Background Art

[0002] Traditional chandelier lift systems often employ a winch-like mechanism, whereby height adjustment is achieved by winding and releasing a rope or wire around a drum. However, this structure requires sufficient axial and radial space to accommodate the multiple turns of rope, resulting in a bulky overall system and requiring considerable installation space.

[0003] To address this, multiple windings of the wire around a reel are often used, combined with multiple guide pulleys to ensure smooth release and rewinding. However, due to the accumulation of winding turns, the traditional motor revolution counting limit method is difficult to intuitively and accurately determine the limit height for chandelier lifting. Furthermore, it is easily affected by factors such as wire slippage, uneven winding, and motor stalling.

[0004] Therefore, how to achieve stable driving and precise limiting of the chandelier lifting has become a key issue that needs to be urgently solved in the current design of chandelier lifting devices. Summary of the Invention

[0005] In response to the problems mentioned above, this application proposes a single-wire electric lifter and a chandelier using the same, aiming to achieve stable driving and precise limiting of the chandelier lifting through optimized design of the overall winding device and limiting structure.

[0006] To achieve the above objectives, this application adopts the following technical solutions: In a first aspect, a single-wire electric lifter is provided, comprising a housing and a limit cover engaged with the housing, a motor disposed at the bottom of the housing, a conductive plate disposed within the space engaged with the housing and the limit cover, a winding device rotatably connected to the conductive plate, a conductive lifting coil wound by the winding device, and a guide wheel disposed outside the limit cover and guiding the winding and releasing of the lifting coil; The upper end of the winding device is provided with an internal gear that rotates synchronously with the winding device. It also includes a limit gear arranged at the upper end of the limit cover and meshing with the internal gear, and two limit switches arranged at intervals on the outer periphery of the limit gear. The outer periphery of the limit gear is provided with a protrusion that triggers the limit switch as the limit gear rotates.

[0007] In this way, by adopting a single-wire winding and transmission structure and combining the power cord as the lifting and carrying cable design, a lifting control method with a compact structure and smooth operation is achieved, avoiding the problems of large space occupation, complex operation, and easy knotting brought about by traditional double-wire structures or multi-turn winding reels.

[0008] Furthermore, the lifter features an internal gear on the winding mechanism that meshes with a limit gear. A limit structure with a raised portion is installed on the outer periphery of the limit gear, which, in conjunction with two spaced limit switches, achieves precise limit control of the lifting stroke. When the limit gear rotates to the set position along with the transmission system, the raised portion triggers the corresponding limit switch, which in turn feeds a signal indicating the lift is in position to the control system, automatically cutting off power to the motor and preventing over-lifting, ensuring a safe and reliable lifting process.

[0009] In some possible embodiments, the diameter of the limit gear is larger than the diameter of the internal gear, the lifting stroke of the lifting coil is controlled by the transmission ratio of the limit gear and the internal gear, and the two limit switches respectively detect the upper limit position and the lower limit position of the lifting stroke.

[0010] In some possible embodiments, the winding device includes a circuit board, a lower aluminum plate, a driving wheel assembly fixedly embedded in the lower aluminum plate and driven by the motor, and an upper aluminum plate fixed to the driving wheel assembly and clamping the lifting coil with the lower aluminum plate to enable it to be wound up on a single wheel.

[0011] In some possible implementations, the driving wheel assembly includes a chuck and a transmission shaft, the chuck is embedded in the lower aluminum plate at the lower end, the upper aluminum plate is fixed to the upper end of the chuck, and the lifting coil is wound around the chuck; The lower end of the transmission shaft is fixed to the upper end of the chuck, and the upper end of the transmission shaft is fixed to the internal gear.

[0012] In some possible implementations, at least one conductive ring is provided on the back of the circuit board, the conductive plate is provided with a plurality of conductive contacts corresponding to the conductive ring and connected to a power source, and the conductive ring maintains sliding contact with the conductive contacts.

[0013] In some possible implementations, an insulating ring is further included that is arranged on the periphery of the circuit board.

[0014] In some possible implementations, the housing is provided with a plurality of support legs extending downward and fixedly connected to the ceiling cup, and the motor is disposed between the support legs.

[0015] In some possible implementations, a guide groove is further included to enable the guide wheel to move up and down, and a safety switch is further included to release the trigger state when the guide wheel moves upward.

[0016] In some possible implementations, the housing is provided with a guide column at the lower end of the guide wheel, which extends to the ceiling cup and guides the lifting coil.

[0017] In a second aspect, the present application provides a chandelier using the single-wire electric lifter as described above, which also includes a ceiling plate, a control panel and a driving power supply arranged in the ceiling plate, and a lamp body suspended by the lifting coil. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of a chandelier used by the single-line electric lifter of this application; Figure 2 It is a schematic diagram of the limit gear and limit switch in this application; Figure 3 It is a schematic diagram of the guide wheel, guide groove, safety switch and guide column in this application; Figure 4 It is an exploded schematic diagram of the clamping of the lifting coil in this application; Figure 5 is an exploded schematic diagram of the winding device in this application; Figure 6 This is the rear view of the circuit board in this application; Figure 7 It is a schematic diagram of the conductive plate and insulating ring in this application; Figure 8 This is a schematic diagram of the explosion of the housing, conductive plate, and motor in this application. DETAILED DESCRIPTION

[0019] The following examples further illustrate the features of the present application and other related features to facilitate understanding by those skilled in the art: It should be noted that the words "front", "rear", "left", "right", "up" and "down" used in the following description refer to directions in the accompanying drawings, and the words "bottom" and "top", "inside" and "outside" refer to directions toward or away from the geometric center of a specific component, respectively.

[0020] Furthermore, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be interpreted broadly. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to direct connections, indirect connections through an intermediary, or internal connections between two components. A person of ordinary skill in the art will be able to understand the specific meanings of these terms in this case.

[0021] Please refer to Figure 1The single-wire electric lifter 100 of the present application is applied to a chandelier, which also includes a ceiling cup 200, a control panel 300 disposed in the ceiling cup 200, and a driving power supply 400. The lamp body 500 is suspended and lifted up and down. At this time, since the ceiling cup 200 becomes an exterior component, the ceiling cup 200 can be fixed to the ceiling by a cross fixing bracket, which is a common technical means in the lighting industry and will not be described in detail. It should be noted that since it is an exterior component, in addition to solving the stability and precise positioning of traditional lifting chandeliers, it is also necessary to consider the appearance size under the premise of ensuring stable lifting and positioning functions.

[0022] Please refer to Figure 2 、 Figure 4 、 Figure 5 and Figure 8 A single-line electric lifter of the present application includes a shell 1 and a limit cover 2 that is fastened to the shell 1. The shell 1 is arranged at the lower end, and is provided with a support leg 11 that extends downward and is fixedly connected to the ceiling cup 200. A motor 3 is provided on the support leg 11 as a driving device for retracting and releasing the wire, and a right-angle transmission motor can be used.

[0023] Furthermore, a conductive plate 4 and a winding device that is electrically connected and rotatable to the conductive plate 4 are provided within the interlocking space between the housing 1 and the limiting cover 2. The conductive plate 4 is fixed to the housing 1 and is a static contact, while the winding device is driven to rotate by the motor 3 and is a dynamic contact. At the same time, the winding device can reel in the conductive lifting coil 6 when it rotates, and a guide wheel 61 that can guide the lifting coil 6 is provided on the outside of the limiting cover 2. It should be noted that the lifting coil 6 can be presented in a state where the winding device is reeled in and a state where the suspension line is released, and in this embodiment, both will be referred to as the lifting coil 6.

[0024] As a possible embodiment of a winding device, the winding device includes a circuit board 51, a lower aluminum plate 52, a driving wheel assembly 53 fixedly embedded in the lower aluminum plate 52 and driven by the motor 3, and an upper aluminum plate 54 fixed to the driving wheel assembly 53 and supporting the lifting coil 6 with the lower aluminum plate 52 to enable single-wheel winding. Specifically, the driving wheel assembly 53 is a polygonal structure, embedded in the upper end of the lower aluminum plate 52, and is screwed to the driving wheel assembly 53 from the lower end through bolts passing through the circuit board 51 and the lower aluminum plate 52. From the top, bolts are passed through the upper aluminum plate 54 and then screwed to the driving wheel assembly 53. If the driving wheel assembly 53 is designed with three corners, the number of bolts tightened can also be three. In this way, when the driving wheel assembly 53 rotates, it can drive the entire winding device to rotate.

[0025] Furthermore, the drive wheel assembly 53 includes a chuck 531 and a transmission shaft 532. The chuck 531 is embedded in the lower aluminum plate 52 at its lower end, and the upper aluminum plate 54 is fixed to the upper end of the chuck 531. The lifting coil 6 is wound around the chuck 531. The transmission shaft 532 is fixed to the upper end of the chuck 531. An internal gear 533 is fixed to the upper end of the transmission shaft 532. The chuck 531, transmission shaft 532, and internal gear 533 rotate synchronously. Electrodes on the upper end of the circuit board 51 pass through the chuck 531 to electrically connect to the lifting coil 6.

[0026] Furthermore, the inner gear 533 passes through the limit cover 2. The interior partition of the limit cover 2 is provided with a limit gear 21 that meshes with the inner gear 533. Two limit switches 22 are spaced apart on the outer periphery of the limit gear 21. Furthermore, a protrusion 211 is provided on the outer periphery of the limit gear 21 to trigger the limit switches 22 as the limit gear 21 rotates.

[0027] Preferably, the diameter of the limit gear 21 is larger than the diameter of the internal gear 533. The lifting and lowering of the lifting coil 6 is controlled by the transmission ratio of the limit gear 21 and the internal gear 533. The two limit switches 22 respectively detect the upper limit position and the lower limit position of the lifting. Specifically, the limit switch 22 can be a touch switch. When the line is released, the internal gear 533 will release the line along with the winding device, and the limit gear 21 will rotate as a driven wheel, and then the protrusion 211 will rotate toward one of the limit switches 22. When the limit switch 22 is touched, the motor 3 can be stopped, thereby achieving a precise lifting distance. This structure only occupies the plane transmission height, and the structure is compact and simple, and does not take up space.

[0028] Furthermore, please combine Figures 1 to 3 The limit cover 2 is provided with a cover plate 23 above the limit gear 21. A guide plate 62 is provided between the winding device and the guide wheel 61 to prevent the lifting coil 6 from being misaligned. The housing 1 is provided with a guide post 12 below the guide wheel 61, extending to the ceiling cup 200 and guiding the lifting coil 6.

[0029] During the line-unwinding process, if the lamp body 500 encounters an obstruction, the lifting coil 6 will be in a weightless state, which can easily cause problems such as tangling and knotting. To this end, the present application also includes a guide groove 63 that allows the guide wheel 61 to move up and down. The guide groove 63 is arranged on the outside of the limit cover 2 and is connected to the guide plate 62. At the same time, a cover plate 64 is provided at the upper end of the guide groove 63 to disengage the guide groove 63 from the upper limit guide wheel 61. A safety switch 65 is provided on one side of the guide wheel 61 to release the trigger state when the guide wheel 61 moves upward. The safety switch 65 can be a touch switch. That is, during normal operation, the guide wheel 61 is always in a downward state due to the weight of the lamp body 500, which will trigger the safety switch 65 to be in a conducting state. When the lamp body 500 is obstructed and the guide wheel 61 loses weight, it can be lifted along with the lifting coil 6, releasing the trigger state of the safety switch 65, causing the motor 3 to stop rotating.

[0030] The following describes the live rotation connection. Figure 6 and Figure 7 At least one conductive ring 511 is provided on the back of the circuit board 51. The conductive plate 4 is provided with a plurality of conductive contacts 41 corresponding to the conductive ring 511 and connected to a power source. The power source is the power supply connected via the power driver 400. When the conductive ring 511 rotates, it maintains sliding contact with the conductive contacts 41. The conductive plate 4 is fixed to the housing 1. An insulating ring 42 is provided on the periphery of the circuit board 51. The insulating ring 42 is fixed to the housing 1 and forms a step with the conductive plate 4.

[0031] In this way, by adopting a single-wire winding and transmission structure and combining the power cord as the lifting and carrying cable design, a lifting control method with a compact structure and smooth operation is achieved, avoiding the problems of large space occupation, complex operation, and easy knotting brought about by traditional double-wire structures or multi-turn winding reels.

[0032] Furthermore, the lifter utilizes an internal gear 533 mounted on the winding mechanism, meshing with a limit gear 21. A limit structure with a raised portion 211 is provided on the outer periphery of the limit gear 21, coupled with two spaced limit switches 22. This allows for precise limit control of the lift stroke. When the limit gear 21 rotates with the transmission system to a set position, the raised portion 211 triggers the corresponding limit switch 21, which in turn feeds a signal indicating the lift is in position to the control system, automatically cutting off power to the motor 3 and preventing over-lifting, ensuring a safe and reliable lift process.

[0033] As mentioned above, this case protects a single-wire electric lifter and a chandelier using the same. All technical solutions that are identical or similar to those in this case should be deemed to fall within the scope of protection of this case.

Claims

1. A single-line electric lifter, characterized in that: It comprises a housing (1) and a limiting cover (2) buckled with the housing (1), a motor (3) arranged at the bottom of the housing (1), a conductive plate (4) arranged in the buckled space between the housing (1) and the limiting cover (2), a winding device connected to the conductive plate (4) in a powered and rotatable manner, a lifting coil (6) wound by the winding device and capable of conducting electricity, and a guide wheel (61) arranged on the outside of the limiting cover (2) and guiding the lifting coil (6) to be retracted and released; The upper end of the winding device is provided with an internal gear (533) that rotates synchronously with the winding device, and also includes a limit gear (21) arranged at the upper end of the limit cover (2) and meshing with the internal gear (533), and two limit switches (22) arranged at intervals on the outer periphery of the limit gear (21), and the outer periphery of the limit gear (21) is provided with a protrusion (211) that triggers the limit switch (22) as the limit gear (21) rotates.

2. A single-wire electric lifter as claimed in claim 1, characterized in that: The diameter of the limit gear (21) is greater than the diameter of the internal gear (533), and the lifting stroke of the lifting coil (6) is controlled by the transmission ratio of the limit gear (21) and the internal gear (533). The two limit switches (22) respectively detect the upper limit position and the lower limit position of the lifting stroke.

3. A single-wire electric lifter as claimed in claim 1, characterized in that: The winding device comprises a circuit board (51), a lower aluminum plate (52), a driving wheel assembly (53) fixedly embedded in the lower aluminum plate (52) and driven by the motor (3), and an upper aluminum plate (54) fixed to the driving wheel assembly (53) and clamping the lifting coil (6) with the lower aluminum plate (52) to enable the lifting coil (6) to be wound in a single wheel.

4. A single-wire electric lifter as claimed in claim 3, characterized in that: The driving wheel assembly (53) includes a chuck (531) and a transmission shaft (532); the chuck (531) is embedded in the lower aluminum plate (52) at the lower end; the upper aluminum plate (54) is fixed to the upper end of the chuck (531); and the lifting coil (6) is wound around the chuck (531); The lower end of the transmission shaft (532) is fixed to the upper end of the chuck (531), and the upper end thereof is fixed to the internal gear (533).

5. A single-wire electric lifter as claimed in claim 3, characterized in that: At least one conductive ring (511) is provided on the back of the circuit board (51), and the conductive plate (4) is provided with a plurality of conductive contacts (41) corresponding to the conductive ring (511) and connected to a power source, wherein the conductive ring (511) maintains sliding contact with the conductive contacts (41).

6. A single-wire electric lifter as claimed in claim 5, characterized in that: It also includes an insulating ring (42) arranged on the periphery of the circuit board (51).

7. A single-wire electric lifter as claimed in claim 1, characterized in that: The housing (1) is provided with a plurality of support legs (11) extending downward and fixedly connected to the ceiling cup (200), and the motor (3) is arranged between the support legs (11).

8. A single-wire electric lifter as claimed in claim 1, characterized in that: It also includes a guide groove (62) that enables the guide wheel (61) to move up and down, and a safety switch (63) that releases the trigger state when the guide wheel (61) moves upward.

9. A single-wire electric lifter as claimed in claim 1, characterized in that: The housing (1) is provided with a guide column (12) at the lower end of the guide wheel (61), which extends to the top cup (200) and guides the lifting coil (6).

10. A chandelier, characterized in that: A single-wire electric lifter according to any one of claims 1 to 9 is used, further comprising a ceiling cup (200), a control panel (300) and a driving power supply (400) arranged in the ceiling cup (200), and a lamp body (500) suspended by the lifting coil (6).

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