Lifting device and lighting device

Abstract

The utility model is suitable for lighting equipment technical field provides a kind of lifting device and lighting equipment. The lifting device includes outer support pole, inner support pole, movable rod and buffer assembly, inner support pole is fixed in outer support pole, movable rod is used to connect the support piece, and movable rod can be lifted relative to outer support pole and inner support pole. Buffer assembly includes the elastic member for providing the damping force of making movable rod hover, elastic member has movable end and fixed end, the fixed end of elastic member is fixedly connected with at least one of inner support pole and outer support pole, and the movable end of elastic member is fixedly connected with movable rod to lift along with movable rod. Movable rod is installed between outer support pole and inner support pole via buffer assembly, movable rod is nested between inner support pole and outer support pole, and the inside and outside of movable rod can be supported and limited, so that the possibility of movable rod bending deformation is reduced, thereby the bending resistance of lifting device is improved.

Description

Technical Field

[0001] This utility model belongs to the field of lighting equipment technology, and in particular relates to a lifting device and lighting equipment. Background Technology

[0002] The lamp head of a lighting device can be raised and lowered to adjust the illumination range by adjusting the vertical height of the light source. However, in related technologies, the lifting device of the lighting device has poor bending resistance, is prone to bending and deformation, and is difficult to support heavy lamp heads or to configure a large lifting distance, thus affecting user experience. Utility Model Content

[0003] In view of this, the present invention provides a lifting device and a lighting device to solve the problem of how to improve the bending resistance of the lifting device.

[0004] To solve the above problems, the technical solution provided by this utility model embodiment is as follows:

[0005] This utility model embodiment provides a lifting device, including: an outer support rod; an inner support rod fixed inside the outer support rod; a movable rod for connecting to the component to be supported and capable of lifting and lowering relative to the outer support rod and the inner support rod; and a buffer assembly including an elastic element for providing a damping force to suspend the movable rod, the elastic element having a movable end and a fixed end, the fixed end of the elastic element being fixedly connected to at least one of the inner support rod and the outer support rod, and the movable end of the elastic element being fixedly connected to the movable rod to lift and lower with the movable rod; wherein the movable rod is installed between the outer support rod and the inner support rod via the buffer assembly.

[0006] In some embodiments, the fixed end of the elastic element is fixedly connected to the inner support rod, and the movable rod is slidably connected to the outer support rod below the fixed end of the elastic element.

[0007] In some embodiments, the buffer assembly further includes: a housing detachably connected to the inner support rod, the fixed end of the elastic element being installed inside the housing, and the movable end of the elastic element extending outside the housing and fixedly connected to the moving rod.

[0008] In some embodiments, the housing has a receiving groove, a rotating shaft is disposed in the receiving groove, the elastic element is wound around the rotating shaft, and the fixed end of the elastic element is fixedly connected to the rotating shaft.

[0009] In some embodiments, the buffer assembly further includes: a slider located between the inner support rod and the moving rod, and connected to the movable end of the elastic element; the outer side of the slider is fixedly connected to the moving rod, and the inner side of the slider is spaced apart from the inner support rod; and a roller rotatably connected to the slider and rollingly abutting against the outer support rod.

[0010] In some embodiments, the buffer assembly further includes a clamping plate detachably fixed to the inside of the slider; wherein, two clamping plates are provided, and the movable end of the elastic element is clamped between the two clamping plates; or, one clamping plate is provided, and the movable end of the elastic element is clamped between the clamping plate and the slider.

[0011] In some embodiments, the inner support rod has a groove adapted to the clamping plate, and at least the upper end of the groove is closed; wherein at least a portion of the clamping plate passes through the groove and is blocked by the upper end of the groove.

[0012] In some embodiments, the buffer assembly further includes: a fastener, at least one of which passes through the clamp and the elastic member, such that the movable end of the elastic member is fixed to the clamp.

[0013] In some embodiments, the lifting device further includes: a pulley assembly, fixedly connected to the moving rod, and spaced below the buffer assembly; wherein the pulley assembly is spaced from the inner support rod, and at least a portion of the pulley assembly rolls against the outer support rod.

[0014] This utility model embodiment also provides a lighting device, including the lifting device described above. The lighting device further includes: a lamp head connected to the top end of the moving rod; and a support connected to the bottom end of the outer support rod and the inner support rod; wherein the lamp head is the component to be supported.

[0015] This utility model provides a lifting device including an outer support rod, an inner support rod, a movable rod, and a buffer assembly. The inner support rod is fixed inside the outer support rod. The movable rod is used to connect to the component to be supported and can be raised and lowered relative to the outer and inner support rods. The buffer assembly includes an elastic element with a movable end and a fixed end. The movable end of the elastic element is fixedly connected to the movable rod to rise and fall with it. The elastic element provides damping force for suspending the movable rod. The movable rod is installed between the outer and inner support rods via the buffer assembly, i.e., the movable rod is nested between the inner and outer support rods. The inner support rod located inside the movable rod and the outer support rod located outside the movable rod share the common barrier against bending deformation of the movable rod, so that both the inner and outer sides of the movable rod can be supported and restricted, reducing the possibility of bending deformation of the movable rod, thereby improving the bending resistance of the lifting device and enhancing the reliability of the support, thus meeting the requirement of stably supporting the connected component to be supported.

[0016] The present invention provides a lighting device including a lamp head, a base, and the aforementioned lifting device. Since the lifting device has a large bending resistance, it can be configured with a heavy lamp head and can be suspended in time, or a long moving rod can be configured to give the lamp head a large lifting range, thereby improving the reliability of the lighting device and the flexibility of adjusting the lamp head illumination range. Attached Figure Description

[0017] Figure 1 This is a perspective view of the lighting device provided in an embodiment of the present utility model;

[0018] Figure 2 This is a top view of the lighting device provided in an embodiment of the present utility model;

[0019] Figure 3 The lifting device provided in the embodiments of this utility model is Figure 2 A cross-sectional view along the AA direction;

[0020] Figure 4 for Figure 3 Enlarged view of point B in the middle;

[0021] Figure 5 This is a schematic diagram of the elastic element being assembled into the inner support rod according to an embodiment of the present invention.

[0022] Explanation of reference numerals in the attached figures:

[0023] 1. Lifting device; 11. Outer support rod; 12. Inner support rod; 121. Slide groove; 13. Moving rod; 14. Buffer assembly; 141. Elastic element; 1411. Moving end; 1412. Fixed end; 142. Housing; 1421. Receiving groove; 1422. Rotating shaft; 143. Sliding block; 144. Roller; 145. Clamping plate; 1451. Through hole; 15. Pulley assembly; 2. Lamp head; 3. Support. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0025] The specific technical features described in the specific embodiments can be combined in any suitable manner without contradiction. For example, different combinations of specific technical features can form different embodiments and technical solutions. To avoid unnecessary repetition, the various possible combinations of the specific technical features in this utility model will not be described separately.

[0026] In the following description, the terms "first," "second," "etc." are used merely to distinguish different objects and do not indicate that the objects have the sameness or relationship. It should be understood that the directional descriptions "above," "below," "outside," and "inside" refer to the directions under normal use, while "left" and "right" refer to the left and right directions shown in the corresponding diagrams, which may or may not be the left and right directions under normal use.

[0027] 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 a process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. "A plurality of" means two or more.

[0028] like Figure 1 As shown, this embodiment of the present invention provides a lifting device 1, which can be applied to lighting equipment or other equipment requiring lifting, such as a fan with adjustable airflow height or a computer with adjustable screen height. It should be noted that the application scenario of this embodiment does not limit the structure of the lifting device 1.

[0029] like Figure 2 and Figure 3 As shown, the lifting device 1 includes an outer support rod 11, an inner support rod 12, a moving rod 13, and a buffer assembly 14. The inner support rod 12 is fixed inside the outer support rod 11. Specifically, the outer support rod 11 is hollow inside so that the inner support rod 12 can be inserted, and the inner support rod 12 is nested inside the outer support rod 11.

[0030] The movable rod 13 is used to connect the component to be supported and can be raised and lowered relative to the outer support rod 11 and the inner support rod 12. Specifically, the specific type of component to be supported is adapted to the application scenario of the lifting device 1, that is, the component to be supported can be a lamp head 2, a fan head, or a computer monitor.

[0031] like Figure 3 and Figure 4 As shown, the buffer assembly 14 includes an elastic element 141 for providing a damping force to suspend the moving rod 13. With the damping force provided by the elastic element 141, the moving rod 13 can be suspended at any position within the lifting range, thereby realizing the height adjustment of the supported component.

[0032] The elastic element 141 has a movable end 1411 and a fixed end 1412. The fixed end 1412 of the elastic element 141 is fixed and remains stationary, while the movable end 1411 of the elastic element 141 can move relative to the fixed end 1412. It should be noted that this embodiment of the invention does not limit the specific type of the elastic element 141. For example, the elastic element 141 can be a spring extending along the lifting direction of the moving rod 13. In this case, one of the upper and lower ends of the spring forms the fixed end 1412 of the elastic element 141, and the other of the upper and lower ends forms the movable end 1411 of the elastic element 141. Alternatively, the elastic element 141 can also be a coil spring, which has one end wound around the center and another end that is not wound and located on the outermost side. One of the aforementioned ends of the coil spring forms the fixed end 1412 of the elastic element 141, and the other forms the movable end 1411 of the elastic element 141. Regardless of the specific type of the elastic element 141, it is sufficient as long as the elastic element 141 has a fixed end 1412 and a movable end 1411.

[0033] like Figure 3 and Figure 4 As shown, the fixed end 1412 of the elastic element 141 is fixedly connected to at least one of the inner support rod 12 and the outer support rod 11. Specifically, the fixed end 1412 of the elastic element 141 can be fixedly connected to the inner support rod 12, the outer support rod 11, or both. Regardless of which of the inner support rod 12 or the outer support rod 11 the fixed end 1412 is fixed to, it is sufficient that the fixed end 1412 of the elastic element 141 can be fixed. The movable end 1411 of the elastic element 141 is fixedly connected to the moving rod 13 to rise and fall with the moving rod 13. The movable end 1411 of the elastic element 141 stores potential energy during the rising and falling process with the moving rod 13, and releases the stored potential energy after the rising and falling action of the moving rod 13 is completed to resist the gravity of the moving rod 13, so that the moving rod 13 remains in a fixed position, that is, the moving rod 13 is "suspended" in time, thereby realizing the height adjustment of the supported component.

[0034] like Figure 3 and Figure 4As shown, the movable rod 13 is installed between the outer support rod 11 and the inner support rod 12 via the buffer assembly 14. Specifically, the lower portion of the movable rod 13 within its height range is nested between the outer support rod 11 and the inner support rod 12, while the upper portion of the movable rod 13 within its height range is located outside the outer support rod 11 and the inner support rod 12 and is connected to the component to be supported. For example, the top of the movable rod 13 is always located above the outer support rod 11 and the inner support rod 12 and is connected to the component to be supported. At least a portion of the movable rod 13 is installed between the outer support rod 11 and the inner support rod 12. The inner support rod 12 located inside the movable rod 13 can prevent the movable rod 13 from bending towards the inner support rod 12, and the outer support rod 11 located outside the movable rod 13 can prevent the movable rod 13 from bending towards the outer support rod 11. This allows both the inner and outer sides of the movable rod 13 to be supported and restricted, increasing the restricted position and area of ​​the movable rod 13. The two support rods work together to resist torsion, reducing the possibility of bending deformation of the movable rod 13.

[0035] The lifting device 1 provided in this embodiment of the present invention includes an outer support rod 11, an inner support rod 12, a movable rod 13, and a buffer assembly 14. The inner support rod 12 is fixed inside the outer support rod 11. The movable rod 13 is used to connect to the component to be supported and can be raised and lowered relative to the outer support rod 11 and the inner support rod 12. The buffer assembly 14 includes an elastic element 141 for providing a damping force to suspend the movable rod 13. The elastic element 141 has a movable end 1411 and a fixed end 1412. The fixed end 1412 of the elastic element 141 is fixedly connected to at least one of the inner support rod 12 and the outer support rod 11. The movable end 1411 of the elastic element 141 is fixedly connected to the movable rod 13 so as to rise and fall with the movable rod 13. The movable rod 13 is installed between the outer support rod 11 and the inner support rod 12 via the buffer assembly 14. The inner support rod 12, located inside the movable rod 13, and the outer support rod 11, located outside the movable rod 13, share the supporting force and jointly prevent the bending deformation of the movable rod 13. This increases the torsional moment and torsional area of ​​the movable rod 13, reduces the possibility of bending deformation, and improves the bending resistance of the lifting device 1. When the lifting device 1 is used in lighting equipment, a heavier lamp head 2 or a longer movable rod 13 can be configured for the lighting equipment to allow the lamp head 2 to have a larger lifting distance, thereby increasing the adjustable lighting range of the lighting equipment.

[0036] In some embodiments, such as Figure 4As shown, the fixed end 1412 of the elastic element 141 is fixedly connected to the inner support rod 12, that is, the elastic element 141 is installed on the inner support rod 12 and located inside the movable rod 13. The movable rod 13 is slidably connected to the outer support rod 11 below the fixed end 1412 of the elastic element 141, that is, the position where the movable rod 13 is slidably connected to the outer support rod 11 is below the fixed end 1412 of the elastic element 141, and the fixed end 1412 of the elastic element 141 is above the movable end 1411 of the elastic element 141.

[0037] For ease of explanation, this utility model provides an exemplary embodiment. (Refer to...) Figure 3 and Figure 4 The movable rod rolls against the outer support rod 11 via roller 144. Therefore, the installation position of roller 144 is the aforementioned "position where the movable rod 13 and the outer support rod 11 are slidably connected." In other words, the fixed end 1412 of the elastic element 141 is above the roller 144. It can be understood that, to achieve the contact between roller 144 and the outer support rod 11, roller 144 is installed on the portion of the movable rod 13 nested between the outer support rod 11 and the inner support rod 12. Therefore, the fixed end 1412 of the elastic element 141 is located above the portion where the outer support rod 11, the inner support rod 12, and the movable rod 13 are nested together. Thus, the installation position of the elastic element 141 (the fixed end 1412 of the elastic element 141) is located above the part where the outer support rod 11, the inner support rod 12 and the moving rod 13 are nested together. The fixed end 1412 of the elastic element 141 is far away from the nested connection part between the moving rod 13 and the two support rods. The elastic element 141 can be installed in the space inside the moving rod 13 above the inner support rod 12. The installation space of the elastic element 141 is independent of the nested space between the moving rod 13 and the two support rods. The space utilization rate is high, and the assembly operation of the elastic element 141 can be simplified by using a larger space.

[0038] In some embodiments, such as Figure 4 As shown, the buffer assembly 14 also includes a housing 142, which is detachably connected to the inner support rod 12. The fixed end 1412 of the elastic element 141 is installed inside the housing 142, and the movable end 1411 of the elastic element 141 extends out of the housing 142 and is fixedly connected to the moving rod 13. That is, the mounting base of the elastic element 141 is inside the housing 142, and the elastic element 141 is assembled onto the inner support rod 12 through the housing 142. The assembly formed by the elastic element 141 and the housing 142 is detachably connected to the inner support rod 12. Thus, without disassembling the inner support rod 12, the elastic element 141 can be disassembled and reassembled by removing and installing the housing 142 onto the inner support rod 12. This facilitates the replacement of a failed elastic element 141 and also facilitates the maintenance of the elastic element 141, thereby improving the stability of the moving rod 13 during suspension.

[0039] In some embodiments, such as Figure 4As shown, the housing 142 has a receiving groove 1421, within which a rotating shaft 1422 is disposed. An elastic element 141 is wound around the rotating shaft 1422, and the fixed end 1412 of the elastic element 141 is fixedly connected to the rotating shaft 1422. It can be understood that the elastic element 141 is a coil spring. The end of the coil spring wound around the center position forms the aforementioned fixed end 1412 of the elastic element 141, and is fixedly connected to the rotating shaft 1422. The unwound end of the coil spring, located on the outermost side, forms the aforementioned movable end 1411 of the elastic element 141, and is fixedly connected to the moving rod 13. The sidewall of the receiving groove 1421 in the housing 142 blocks the elastic element 141 circumferentially, thereby ensuring that the elastic element 141 is reliably wound around the rotating shaft 1422. The movable end 1411 of the coil spring rises and falls with the moving rod 13. The coil spring provides damping force, allowing the moving rod 13 to be suspended at any position within the range of height adjustment, thereby realizing the height adjustment of the component to be supported.

[0040] In some embodiments, such as Figure 4 As shown, the buffer assembly 14 also includes a slider 143 and a roller 144. The slider 143 is located between the inner support rod 12 and the moving rod 13, and is connected to the movable end 1411 of the elastic element 141. Specifically, the movable end 1411 of the elastic element 141 can be directly mounted on the inner support rod 12 and directly connected to it; or the movable end 1411 of the elastic element 141 can be mounted on the inner support rod 12 through other components (such as a clamping plate 145) and indirectly connected to it. In short, as long as the slider 143 and the movable end 1411 of the elastic element 141 can be connected, the movable end 1411 of the elastic element 141 can rise and fall with the moving rod 123, it is acceptable. The outer side of the slider 143 is fixedly connected to the moving rod 13, and the inner side of the slider 143 is spaced apart from the inner support rod 12. That is, the slider 143 is nested between the moving rod 13 and the inner support rod 12. The slider 143 can move up and down relatively smoothly relative to the inner support rod 13 by utilizing the distance between it and the inner support rod 13.

[0041] Roller 144 is rotatably connected to slider 143. Specifically, there may be only one roller 144 or multiple rollers 144. Roller 144 may be located on only one side of slider 143 or on multiple sides of slider 143 in the circumferential direction. Roller 144 rolls against outer support rod 11, that is, slider 143 rolls against outer support rod 11 via roller 144. Compared with sliding friction, rolling friction has less frictional force. Rolling contact between roller 144 and outer support rod 11 facilitates smoother lifting and lowering of moving rod 13, which is fixedly connected to slider 143. On the other hand, the rolling contact between roller 144 and outer support rod 11 provides a larger support section for roller 144 in the horizontal direction, resulting in less local stress concentration in slider 143. This further increases the bending resistance of moving rod 13 and reduces the possibility of bending deformation of moving rod 13.

[0042] In some embodiments, such as Figure 4 As shown, the buffer assembly 14 also includes a clamping plate 145 detachably fixed to the inner side of the slider 143. Two clamping plates 145 are provided, and the movable end 1411 of the elastic element 141 is clamped between the two clamping plates 145, meaning the movable end 1411 of the elastic element 141 is assembled onto the slider 143 via the clamping plates 145. In some other possible embodiments, only one clamping plate 145 may be provided, with the movable end 1411 of the elastic element 141 clamped between the clamping plate 145 and the slider 143. Regardless of the number of clamping plates 145, the movable end 1411 of the elastic element 141 is fixed to the slider 143 via the clamping plates 145 and is clamped by them. Thus, the movable end 1411 of the elastic element 141 is detachably fixed, facilitating the assembly and disassembly of the elastic element 141 and reducing the difficulty of maintenance and replacement of the elastic element 141.

[0043] In some embodiments, such as Figure 4 and Figure 5 As shown, the inner support rod 12 has a groove 121 adapted to the clamping plate 145, that is, the groove 121 is located inside the outer support rod 11. At least the upper end of the groove 121 is closed. Specifically, both the upper and lower ends of the groove 121 can be closed, or only the upper end of the groove 121 can be closed. The lower end of the groove 121 penetrates the lower end wall of the inner support rod 12. At least a portion of the clamping plate 145 passes through the groove 121 and is blocked by the upper end of the groove 121. The upper end of the groove 121, by blocking the clamping plate 145, limits the movement of the slider 143, reducing the possibility that the slider 143 might cause the movable end 1411 of the elastic element 141 to disengage from the inner support rod 12, and improving the reliability of the lifting and lowering of the moving rod 13.

[0044] In some embodiments, such as Figure 4 As shown, the buffer assembly 14 also includes a fastener (not shown). At least one fastener is provided, passing through the clamping plate 145 and the elastic element 141, so that the movable end 1411 of the elastic element 141 is fixed to the clamping plate 145. Specifically, only one fastener may be provided to reduce the number of components; multiple fasteners may also be provided to increase the area of ​​the elastic element 141 that is fixed. In some possible embodiments, both the clamping plate 145 and the elastic element 141 may have through holes 1451, with the fastener passing through the through holes 1451, so that the movable end 1411 of the elastic element 141 is fixed to the clamping plate 145. The fastener passing through the clamping plate 145 and the elastic element 141 restricts the degree of freedom of the elastic element 141 at any position in the circumferential direction of the fastener, reducing the possibility of the elastic element 141 detaching from the clamping plate 145. The movable end 1411 of the elastic element 141 is reliably fixed to the clamping plate 145, which also improves the reliability of the lifting and lowering of the moving rod 13.

[0045] In some embodiments, such as Figure 3 and Figure 5 As shown, the lifting device 1 also includes a pulley assembly 15, which is fixedly connected to the moving rod 13 and spaced apart below the buffer assembly 14. Specifically, the pulley assembly 15 may include only one pulley or multiple pulleys; the pulleys may be located on only one side of the moving rod 13 or on multiple sides of the moving rod 13 in the circumferential direction. The pulley assembly 15 is spaced apart from the inner support rod 12, and at least a portion of the pulley assembly 15 rolls against the outer support rod 11. The pulley assembly 15 supports the moving rod 13 below the buffer assembly 14, extending the length of the moving rod 13 nested between the inner support rod 12 and the outer support rod 11. The pulley assembly 15 and the buffer assembly 14 jointly support the moving rod 13, increasing the lever arm that the moving rod 13 can support, thereby reducing the possibility of the moving rod 13 tipping over and bending deformation, and further increasing the bending resistance of the moving rod 13.

[0046] like Figure 1 As shown, this utility model embodiment also provides a lighting device, which includes the above-mentioned lifting device 1, and the lighting device also includes a lamp head 2 and a support 3, wherein the lamp head 2 is a support component.

[0047] The lamp holder 2 is connected to the top of the movable rod 13. Specifically, in the top view of the lighting equipment (e.g., Figure 2 As shown, the lamp head 2 can be set only on one side of the moving rod 13 to reduce the influence of the shadow of the lifting device 1 on the lighting area formed by the light from the lamp head 2 during lighting; the lamp head 2 can also be set on multiple sides of the moving rod 13, for example, the center of the lamp head 2 is connected to the center of the top of the moving rod 13, so that the light from the lamp head 2 can form an lighting area on multiple sides of the moving rod 13.

[0048] The support 3 is connected to the bottom ends of the outer support rod 11 and the inner support rod 12, forming the base of the outer support rod 11 and the inner support rod 12. When the movable rod 13 is nested between the inner support rod 12 and the outer support rod 11, the lamp head 2 of the lighting device in this embodiment of the present invention is at its highest height. That is to say, the initial position of the lighting device in this embodiment of the present invention is the highest position of the lamp head 2. When the user needs to adjust the position of the light source vertically, he only needs to press down the movable rod 13 to lower the height of the lamp head 2, thereby adjusting the lighting height.

[0049] Specifically, since the lighting equipment includes the aforementioned lifting device 1, it has the same technical effect as the aforementioned lifting device 1, that is, the lighting equipment has strong bending resistance and strong load-bearing capacity, can be equipped with larger weight lamp heads 2 to form different types or different illumination intensities of lighting equipment, and can also be equipped with a larger lifting adjustment range, thereby enabling a larger lighting range.

[0050] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A lifting device, characterized in that, include: External support rod; The inner support rod is fixed inside the outer support rod; A movable rod is used to connect the component to be supported and can be raised and lowered relative to the outer support rod and the inner support rod; A buffer assembly includes an elastic element for providing a damping force to suspend the movable rod, the elastic element having a movable end and a fixed end, the fixed end of the elastic element being fixedly connected to at least one of the inner support rod and the outer support rod, and the movable end of the elastic element being fixedly connected to the movable rod to move up and down with the movable rod; The moving rod is installed between the outer support rod and the inner support rod via the buffer assembly.

2. The lifting device according to claim 1, characterized in that, The fixed end of the elastic element is fixedly connected to the inner support rod, and the movable rod is slidably connected to the outer support rod below the fixed end of the elastic element.

3. The lifting device according to claim 1, characterized in that, The buffer component also includes: The housing is detachably connected to the inner support rod. The fixed end of the elastic element is installed inside the housing, and the movable end of the elastic element extends out of the housing and is fixedly connected to the moving rod.

4. The lifting device according to claim 3, characterized in that, The housing has a receiving groove, a rotating shaft is provided in the receiving groove, the elastic element is wound around the rotating shaft, and the fixed end of the elastic element is fixedly connected to the rotating shaft.

5. The lifting device according to any one of claims 1 to 4, characterized in that, The buffer component also includes: A slider is located between the inner support rod and the moving rod, and is connected to the movable end of the elastic element; the outer side of the slider is fixedly connected to the moving rod, and the inner side of the slider is spaced apart from the inner support rod; The roller is rotatably connected to the slider and rolls against the outer support rod.

6. The lifting device according to claim 5, characterized in that, The buffer assembly also includes a clamping plate that is detachably fixed to the inside of the slider; The clamping plate is provided in two parts, and the movable end of the elastic element is clamped between the two clamping plates; Alternatively, the clamping plate is provided, and the movable end of the elastic element is clamped between the clamping plate and the slider.

7. The lifting device according to claim 6, characterized in that, The inner support rod has a sliding groove adapted to the clamping plate, and at least the upper end of the sliding groove is closed; At least a portion of the clamping plate passes through the slide groove and is blocked by the upper end of the slide groove.

8. The lifting device according to claim 6, characterized in that, The buffer component also includes: At least one fastener is provided, which passes through the clamping plate and the elastic member so that the movable end of the elastic member is fixed to the clamping plate.

9. The lifting device according to any one of claims 1 to 4, characterized in that, The lifting device also includes: A pulley assembly is fixedly connected to the moving rod and is spaced apart below the buffer assembly; The pulley assembly is spaced apart from the inner support rod, and at least a portion of the pulley assembly rolls against the outer support rod.

10. A lighting device, characterized in that, The lighting device further includes the lifting device according to any one of claims 1 to 9, and further includes: The lamp holder is connected to the top of the moving rod; A support is connected to the bottom ends of the outer support rod and the inner support rod; The lamp head is the support component to be supported.

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