Retractable lighting fixtures

Abstract

This invention provides a telescopic lamp, including a housing and a lamp body connected to the housing via a cable. The housing has a first pulley and a second pulley. The cable is at least partially wound between the first and second pulleys. The first pulley is configured to rotate about a fixed axis, and the second pulley is configured to move vertically from an initial position to a locked position. When the second pulley is in the initial position, the distance between the first and second pulleys is greater than the diameter of the cable. When the second pulley is in the locked position, the distance between the first and second pulleys is less than the diameter of the cable, thus locking the cable between the first and second pulleys. Compared to existing technologies, this invention allows for arbitrary adjustment of the lamp body height and adaptive design for lamp bodies of different weights, enhancing the user experience.

Description

Technical Field

[0001] This invention relates to a telescopic lamp, belonging to the field of lighting technology. Background Technology

[0002] Existing chandeliers can control the height of the lamp body through electric or mechanical mechanisms. However, electric mechanisms are more complex and costly, while existing mechanical mechanisms for controlling the height of the lamp body can only control lamp bodies of the same type and weight and cannot adapt to different lamp bodies. This is extremely inconvenient when users need to replace different types of lamp bodies.

[0003] In view of this, it is indeed necessary to propose a retractable lighting fixture to solve the above problems. Summary of the Invention

[0004] The purpose of this invention is to provide a telescopic lamp that can adapt to lamp bodies of different weights.

[0005] To achieve the above objectives, the present invention provides a telescopic lamp, including a housing and a lamp body connected to the housing via a cable. The housing is provided with a first pulley and a second pulley. The cable is at least partially wound between the first pulley and the second pulley. The first pulley is configured to rotate about a fixed axis, and the second pulley is configured to move vertically from an initial position to a locked position. When the second pulley is in the initial position, the distance between the first pulley and the second pulley is greater than the diameter of the cable. When the second pulley is in the locked position, the distance between the first pulley and the second pulley is less than the diameter of the cable, so that the cable is locked between the first pulley and the second pulley.

[0006] As a further improvement of the present invention, the housing is further provided with a bracket for accommodating the first pulley and the second pulley. The bracket is provided with a groove extending in the vertical direction. The second pulley is provided with a rotating shaft extending into the groove. The second pulley can follow the rotating shaft to move in the vertical direction and rotate relative to the groove.

[0007] As a further improvement of the present invention, the bracket is also provided with a shaft hole for mounting the first pulley, and fixed shafts extending into the shaft hole are provided on both sides of the first pulley, so that the first pulley can rotate relative to the shaft hole.

[0008] As a further improvement of the present invention, the rotation planes of the first pulley and the second pulley are located in the same vertical plane.

[0009] As a further improvement of the present invention, the bracket is further provided with an elastic element connected to the shaft of the second pulley. The elastic element is capable of generating a pulling force in the vertical direction to reset the second pulley from the locked position to the initial position.

[0010] As a further improvement of the present invention, the housing is further provided with a winding reel, one end of the cable is wound on the winding reel, and the other end is connected to the lamp body. The lamp body is configured to be able to pull the cable out of the winding reel under the action of external force.

[0011] As a further improvement of the present invention, the first pulley is disposed close to the winding reel, the cable is connected to the lamp body after passing from below the first pulley and above the second pulley, and the second pulley moves vertically downward along the groove under the gravity of the lamp body to reduce the distance between the first pulley and the second pulley.

[0012] As a further improvement of the present invention, when the second pulley is in the initial position, the horizontal height of the second pulley is higher than that of the first pulley.

[0013] As a further improvement of the present invention, the second pulley is arranged close to the winding reel, and the cable is connected to the lamp body after passing from below the second pulley and over the first pulley. Under the gravity of the lamp body, the second pulley moves vertically upward along the groove under the tension of the cable to reduce the distance between the first pulley and the second pulley.

[0014] As a further improvement of the present invention, when the second pulley is in the initial position, the horizontal height of the second pulley is lower than that of the first pulley.

[0015] As a further improvement of the present invention, the first pulley and the second pulley overlap in the vertical direction in terms of their orthogonal projections.

[0016] The beneficial effects of this invention are: the height of the lamp body can be adjusted arbitrarily, and it can adapt to lamp bodies of different weights, thus enhancing the user experience. Attached Figure Description

[0017] Figure 1 This is a structural schematic diagram of the telescopic lamp of the present invention.

[0018] Figure 2 yes Figure 1 Enlarged view of the structure at point A in the middle.

[0019] Figure 3 This is a schematic diagram of the structure of the telescopic lamp of the present invention without the housing.

[0020] Figure 4 This is a partial structural schematic diagram of the telescopic lamp of the present invention.

[0021] Figure 5This is a schematic diagram of the structure of the first and second pulleys of the telescopic lamp of the present invention.

[0022] Figure 6 This is a schematic diagram of the structure of the first pulley and the second pulley in another embodiment of the present invention. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0024] It should be noted that, in order to avoid obscuring the present invention with unnecessary details, only the structures and / or processing steps closely related to the present invention are shown in the accompanying drawings, while other details that are not closely related to the present invention are omitted.

[0025] Additionally, it should be noted that the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0026] like Figures 1 to 6 As shown, this invention discloses a telescopic lighting fixture 100, which is a pendant light and can be raised and lowered arbitrarily, hovering at any position within its telescopic range. The telescopic lighting fixture 100 can be embedded in a mounting surface, such as a ceiling or a pre-designed wall, or it can be mounted on a track. For clarity, the following description will use the telescopic lighting fixture 100 as an example for detailed explanation.

[0027] like Figure 1 and Figure 2 As shown, the telescopic lamp 100 includes a housing 10 and a lamp body 20. The housing 10 is mounted on the ceiling, and the lamp body 20 is connected to the housing 10 via a cable 30. The lamp body 20 hangs directly below the housing 10 under gravity. The cable 30 includes, but is not limited to, supporting the lamp body 20 and providing power to it. Further, the housing 10 also includes a winding reel 11. One end of the cable 30 is connected to the winding reel 11 and electrically connected to an external power source. The cable 30 is then wound around the winding reel 11, and the other end of the cable 30 extends out of the housing 10 and connects to the lamp body 20. The lamp body 20 is configured to pull the cable 30 out of the winding reel 11 under external force. It is understood that due to the weight of the lamp body 20 itself, the cable 30 is continuously pulled out under the weight of the lamp body 20.

[0028] Specifically, the winding reel 11 is also provided with a reset structure for retracting the cable. This reset structure generates a restoring force to retract the cable 30. It should be noted that this restoring force is less than the weight of the lamp body 20. Therefore, the cable 30 can be pulled out under the weight of the lamp body 20. When the lamp body 20 is subjected to an upward external force, the weight of the lamp body 20 is canceled out, and the cable 30 is only subjected to the restoring force and is retracted to the winding reel 11 under its action. Of course, in other embodiments of the present invention, the winding reel 11 can also be electrically powered or have other structures, which can be configured as needed and are not limited here.

[0029] like Figures 3 to 5 As shown in the preferred embodiment of the present invention, the housing 10 is further provided with a damping structure 12 for preventing the lamp body 20 from falling freely. The damping structure 12 includes a bracket 121, a first pulley 122 and a second pulley 123. The cable 30 is wound on the first pulley 122 and the second pulley 123, and the first pulley 122 and the second pulley 123 are used for the cable 30 to slide. A receiving groove extending along a vertical plane is formed on the bracket 121 to receive the first pulley 122 and the second pulley 123 on the bracket 121, so that the first pulley 122 and the second pulley 123 rotate in the same vertical plane.

[0030] Furthermore, the first pulley 122 is positioned close to the winding reel 11 and is a fixed pulley. The first pulley 122 is configured to rotate about a fixed axis. Preferably, the bracket 121 also has shaft holes 1211 for mounting the first pulley 122. The shaft holes 1211 have a pair of horizontally penetrating holes located on both sides of the axis of the first pulley 122. Fixed shafts extend from both sides of the first pulley 122 toward the shaft holes 1211, allowing the first pulley 122 to rotate relative to the shaft holes 1211. It is understood that the fixed shaft can rotate relative to the first pulley 122, and is fixedly connected to the shaft holes 1211. Alternatively, the fixed shaft can also be fixedly connected to the first pulley 122, and can rotate relative to the shaft holes 1211. No restrictions are placed here, as long as the rotation of the first pulley 122 relative to the bracket 121 is achieved.

[0031] The second pulley 123 is configured as a movable pulley, and the second pulley 123 can reciprocate in the vertical direction. Preferably, the bracket 121 has a groove 1212 extending in the vertical direction, and the second pulley 123 has a rotating shaft extending into the groove 1212. The second pulley 123 can move vertically with the rotating shaft and rotate relative to the groove 1212. It should be noted that the groove 1212 and the shaft hole 1211 on the same side are opened in the same plane on the surface of the bracket 121, and the groove 1212 and the shaft hole 1211 are staggered left and right, so that a gap is formed between the first pulley 122 and the second pulley 123, so that the cable 30 can pass through the first pulley 122 and the second pulley 123. In particular, the rotating shaft and the fixed shaft have the same structure, and this is only for distinction.

[0032] In a preferred embodiment of the present invention, when the second pulley 123 is in its initial position, the horizontal height of the second pulley 123 is higher than the horizontal height of the first pulley 122. That is, the initial position of the second pulley 123 is the highest point of the groove 1212. At this time, the distance between the first pulley 122 and the second pulley 123 is greater than the diameter of the cable 30. As the second pulley 123 descends, the distance between the first pulley 122 and the second pulley 123 gradually decreases until the first pulley 122 and the second pulley 123 are at the same horizontal height. Therefore, the horizontal height of the shaft hole 1211 should be at least less than or equal to the horizontal height of the lowest point of the groove 1212.

[0033] Furthermore, in this embodiment, when the second pulley 123 is at the lowest point of the slide groove 1212, the distance between the first pulley 122 and the second pulley 123 should be less than the diameter of the cable 30. This arrangement allows for braking of the cable 30 by reducing the distance between the first pulley 122 and the second pulley 123. It should be specifically noted that the distance between the first pulley 122 and the second pulley 123 refers to the distance between the first pulley 122 and the second pulley 123 that allows the cable 30 to contact the track.

[0034] In this embodiment, the cable 30 is partially wound between the first pulley 122 and the second pulley 123. Since the first pulley 122 is located close to the winding reel 11, the cable 30 is connected to the lamp body 20 after passing from below the first pulley 122 and above the second pulley 123. At this time, the first pulley 122 and the second pulley 123 form a pulley group. The second pulley 123 is subjected to the gravity of the lamp body 20 and moves vertically downward along the slide groove 1212 under the action of the gravity of the lamp body 20. As the second pulley 123 continues to descend, the distance between the first pulley 122 and the second pulley 123 also continuously decreases until the second pulley 123 descends to the locking position to fasten the cable 30 and prevent the cable 30 from continuing to slide, until the friction force on the cable 30 is balanced with the gravity of the lamp body 20, so that the relative height of the lamp body 20 can be fixed.

[0035] It should be noted that the smaller the distance between the first pulley 122 and the second pulley 123, the greater the frictional force on the cable 30, and this frictional force is positively fed back by the gravity of the lamp body 20. Therefore, when the weight of the lamp body 20 changes, the cable 30 experiences different magnitudes of gravity, and the frictional force generated between the first pulley 122 and the second pulley 123 changes accordingly.

[0036] like Figure 2 As shown, the bracket 121 is also provided with an elastic element 124 connected to the rotating shaft of the second pulley 123. The elastic element 124 is preferably a spring and is disposed on the outside of the bracket 121. The outside of the bracket 121 is also provided with a fixing part 1213 for connecting the elastic element 124. The fixing part 1213 is located directly above the rotating shaft, and the two ends of the spring are respectively connected to the fixing part 1213 and the rotating shaft, generating a vertical pulling force, so that the second pulley 123 can be reset to its initial position when it is not subjected to the force of the cable 30. Understandably, when the lamp body 20 is subjected to an external force to counteract its weight, such as when a user lifts it by hand, the cable 30 is compressed by the restoring force of the winding reel 11. At the same time, the second pulley 123 is reset under the action of the elastic member 124 to increase the distance between it and the first pulley 122, so that the cable 30 drives the first pulley 122 and the second pulley 123 to rotate, thereby adjusting the height of the lamp body 20.

[0037] like Figure 6As shown, in another different embodiment of the present invention, when the second pulley 123 is in its initial position, the horizontal height of the second pulley 123 is lower than the horizontal height of the first pulley 122. That is, the initial position of the second pulley 123 is the lowest point of the groove 1212. At this time, the distance between the first pulley 122 and the second pulley 123 is greater than the diameter of the cable 30. As the second pulley 123 rises, the distance between the first pulley 122 and the second pulley 123 gradually decreases until the first pulley 122 and the second pulley 123 are at the same horizontal height. Therefore, the horizontal height of the shaft hole 1211 should be at least greater than or equal to the horizontal height of the lowest point of the groove 1212.

[0038] In other embodiments of the present invention, the vertical projections of the first pulley 122 and the second pulley 123 overlap, and the horizontal spacing between the first pulley 122 and the second pulley 123 can be smaller, so that the cable 30 can be tightly clamped between the first pulley 122 and the second pulley 123. No specific limitations are imposed.

[0039] In the above embodiment, the second pulley 123 can also be positioned close to the winding reel 11. The cable 30 passes from below the second pulley 123, over the first pulley 122, and connects to the lamp body 20. Under the weight of the lamp body 20, the second pulley 123 moves vertically upward along the groove 1212 under the tension of the cable 30, thereby reducing the distance between the first pulley 122 and the second pulley 123, and thus locking the cable 30. Similarly, when the lamp body 20 is subjected to an external force to counteract its weight, the cable 30 is no longer taut. The second pulley 123 is subjected to its own weight and the downward force of the elastic element 124, thereby increasing the distance between it and the first pulley 122, causing the cable 30 to return to its original position.

[0040] It is understood that in the above embodiments, the elastic element 124 can be disposed below the pivot of the second pulley 123, and the elastic element 124 can exert a downward pulling force. The specific configuration can be set as needed, and no restrictions are imposed here.

[0041] In summary, the present invention can arbitrarily adjust the height of the lamp body 20 and can adapt to different weights of the lamp body 20, thereby enhancing the user experience.

[0042] The above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.

Claims

1. A telescopic lamp (100), characterized in that: The device includes a housing (10) and a lamp body (20) connected to the housing (10) via a cable (30). The housing (10) is provided with a first pulley (122) and a second pulley (123), a bracket (121) for accommodating the first pulley (122) and the second pulley (123), and a winding reel (11). The bracket (121) is provided with a groove (1212) extending in the vertical direction. The second pulley (123) is provided with a rotating shaft that extends into the groove (1212). The second pulley (123) can move in the vertical direction with the rotating shaft and rotate relative to the groove (1212). The cable (30) is at least partially wound between the first pulley (122) and the second pulley (123), the first pulley (122) being configured to rotate about a fixed axis, and the second pulley (123) being configured to move vertically from an initial position to a locked position. When the second pulley (123) is in the initial position, the distance between the first pulley (122) and the second pulley (123) is greater than the diameter of the cable (30). When the second pulley (123) is in the locked position, the distance between the first pulley (122) and the second pulley (123) is less than the diameter of the cable (30), so that the cable (30) is locked between the first pulley (122) and the second pulley (123). When the first pulley (122) is positioned close to the winding reel (11), the cable (30) passes from below the first pulley (122) over the top of the second pulley (123) and connects to the lamp body (20). The second pulley (123) moves vertically downward along the slide groove (1212) under the gravity of the lamp body (20). When the second pulley (123) is positioned close to the winding reel (11), the cable (30) passes under the second pulley (123) and over the first pulley (122) and connects to the lamp body (20). Under the gravity of the lamp body (20), the second pulley (123) moves vertically upward along the groove (1212) under the tension of the cable (30) to reduce the distance between the first pulley (122) and the second pulley (123). The bracket (121) is also provided with an elastic element (124) connected to the pivot of the second pulley (123). The elastic element (124) can generate a pulling force in the vertical direction so that the second pulley (123) is reset from the locked position to the initial position.

2. The telescopic lamp (100) according to claim 1, characterized in that: The bracket (121) is also provided with a shaft hole (1211) for mounting the first pulley (122). The first pulley (122) has fixed shafts on both sides that extend into the shaft hole (1211), so that the first pulley (122) can rotate relative to the shaft hole (1211).

3. The telescopic lamp (100) according to claim 2, characterized in that: The rotation planes of the first pulley (122) and the second pulley (123) are located in the same vertical plane.

4. The telescopic lamp (100) according to claim 1, characterized in that: One end of the cable (30) is wound on the winding reel (11), and the other end is connected to the lamp body (20). The lamp body (20) is configured to pull the cable (30) out of the winding reel (11) under the action of external force.

5. The telescopic lamp (100) according to claim 4, characterized in that: When the first pulley (122) is positioned close to the winding reel (11) and the second pulley (123) is in its initial position, the horizontal height of the second pulley (123) is higher than that of the first pulley (122).

6. The telescopic lamp (100) according to claim 4, characterized in that: When the second pulley (123) is positioned close to the winding reel (11), and the second pulley (123) is in its initial position, the horizontal height of the second pulley (123) is lower than the horizontal height of the first pulley (122).

7. The telescopic lamp (100) according to claim 6, characterized in that: The first pulley (122) and the second pulley (123) overlap in the vertical direction.

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