Pulley device for a lamp base and floor lamp having it

Abstract

The utility model discloses a pulley device for lamp base and floor lamp with it, this pulley device includes wheel seat, gyro wheel, first gasket and second gasket, wheel seat has the holding groove, and the one side of holding groove is open and forms the opening, gyro wheel is located wheel seat, and the lowest point of gyro wheel's wheel surface is located wheel seat's bottom surface and forms predetermined interval between wheel seat's bottom surface, first gasket is located holding groove's bottom surface, second gasket is located holding groove's top surface, and first gasket and second gasket between limit out with lamp base's thickness compatible holding interval. The pulley device of the utility model, as detachable independent accessory, has considered the stability of floor lamp and the moving convenience, has good versatility and user selection flexibility.

Description

Technical Field

[0001] This utility model relates to lighting fixtures, and more particularly to a pulley device for a lighting fixture base and a floor lamp having the same. Background Technology

[0002] Floor lamps, as a common type of indoor lighting fixture, combine functionality and aesthetics and are widely used in homes, offices, hotels, and other places. To ensure the overall stability of the lamp and prevent it from tipping over during use, the base of a floor lamp is usually designed to be large and quite heavy.

[0003] However, this very base, designed for stability, also makes moving floor lamps inconvenient. In daily life, users often need to adjust the placement of lamps according to their actual needs. For the vast majority of existing floor lamps, their bases do not have any auxiliary moving devices. Therefore, moving these floor lamps often requires users to laboriously lift them completely or drag them on the ground. This method of moving is not only very physically demanding, especially for users with weaker physical strength, but also, during the dragging process, the lamp base is very likely to rub against the floor, tiles, or carpet, causing scratches and wear on the floor surface, and even damage to the lamp base itself.

[0004] To address the aforementioned issues, some existing floor lamps feature casters directly mounted on the bottom of the base. While this design improves portability to some extent, the casters, being fixed components of the lamp, are pre-installed at the factory. Users cannot choose whether or not they need the caster function based on their actual needs or personal preferences, resulting in a lack of flexibility and choice in use. Utility Model Content

[0005] This utility model aims to at least partially solve one of the technical problems in related technologies. Therefore, the purpose of this utility model is to provide a pulley device for a lamp base and a floor lamp having the same.

[0006] To achieve the above objectives, a pulley device for a lamp base according to an embodiment of the present invention includes:

[0007] A wheel seat, the wheel seat having a retaining groove, one side of the retaining groove being open to form an opening;

[0008] A roller is mounted on a wheel seat, and the lowest point of the roller's surface is located above the bottom surface of the wheel seat and forms a predetermined distance between the roller and the bottom surface of the wheel seat.

[0009] The first gasket is disposed on the bottom surface of the retaining groove;

[0010] A second gasket is disposed on the top surface of the retaining groove, and a retaining distance adapted to the thickness of the lamp base is defined between the first gasket and the second gasket.

[0011] In addition, the pulley device for lamp base according to the above embodiments of the present invention may also have the following additional technical features:

[0012] According to one embodiment of the present invention, the first gasket is a pre-installed component that is pre-installed on the bottom surface of the retaining groove, and the second gasket is a post-installed component that is selectively installed on the top surface of the retaining groove during use.

[0013] According to one embodiment of the present invention, there are multiple second gaskets with different thicknesses, so that one of the multiple second gaskets can be selectively installed on the top surface of the retaining groove during use.

[0014] According to one embodiment of the present invention, the predetermined spacing is configured such that when the tilt angle of the lamp base is greater than or equal to 15°, the wheel surface of the roller can contact the bearing ground on which the lamp base is located.

[0015] According to one embodiment of the present invention, the wheel seat includes:

[0016] Base;

[0017] A first clamping plate, one end of which is connected to the base;

[0018] The second clamping plate is located below the first clamping plate, and one end of the second clamping plate is connected to the base. The first clamping plate, the second clamping plate, and the base together define the retaining groove.

[0019] The roller is rotatably mounted on the base via a rotating shaft, and the bottom surface of the second clamping plate serves as the bottom surface of the wheel seat.

[0020] According to one embodiment of the present invention, the base has a pivot portion protruding toward the side away from the opening;

[0021] The pivot portion has a groove extending through it in a vertical direction, and the roller is located in the groove and pivotally connected to the pivot portion via the rotating shaft.

[0022] According to one embodiment of the present invention, the base has a beveled surface that connects the outer surface of the pivot portion and the bottom surface of the second clamping plate, and is configured to slope downwards in the direction from the pivot portion to the second clamping plate.

[0023] According to one embodiment of the present invention, the first gasket and the second gasket are rubber gaskets, and the material of the rubber gasket is selected from any one of silicone, polyurethane rubber, EPDM rubber, neoprene rubber, thermoplastic elastomer, natural rubber or nitrile rubber.

[0024] According to one embodiment of the present invention, the first gasket is bonded to the bottom surface of the retaining groove, and the second gasket is bonded to the top surface of the retaining groove.

[0025] On the other hand, the floor lamp according to an embodiment of the present invention includes:

[0026] Lamp base;

[0027] At least one pulley device for a lamp base as described above, wherein the edge of the lamp base is engaged in the retaining groove of the pulley device.

[0028] According to the embodiments of this utility model, a pulley device for a lamp base and a floor lamp having the same device are provided. This pulley device combines the stability of the floor lamp with the ease of movement. By setting a clamping groove that can be held on the edge of the lamp base, and using first and second pads for a stable and damage-free clamping, the device can be easily attached to existing floor lamps of different thicknesses on the market, exhibiting strong versatility and compatibility. The lowest point of the roller surface is higher than the bottom surface of the wheel base, ensuring that when the lamp is placed vertically, the roller is suspended and does not contact the ground, with direct support provided by the bottom surface of the wheel base. This ensures that the lamp has the same stability as a lamp without rollers when stationary, effectively preventing accidental slippage. When the user needs to move the lamp, simply tilting the lamp at a slight angle allows the roller to contact the ground and bear weight, making it easy and effortless to push the lamp. After moving it to the designated position, straightening the lamp immediately restores the device to a stable state. Furthermore, as an independent component, the pulley device can be selected by users according to their own needs, thus satisfying the flexibility and choice of different user requirements.

[0029] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0030] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0031] Figure 1This is a schematic diagram of the pulley device for a lamp base according to an embodiment of the present invention;

[0032] Figure 2 This is a side view of the pulley device for a lamp base according to an embodiment of the present invention;

[0033] Figure 3 This is an exploded view of the pulley device for a lamp base according to an embodiment of the present invention;

[0034] Figure 4 This is a structural schematic diagram of the floor lamp according to an embodiment of the present invention;

[0035] Figure 5 This is a side view of the floor lamp portion structure according to an embodiment of the present utility model;

[0036] Figure 6 This is a perspective view of the floor lamp portion of an embodiment of this utility model.

[0037] Figure label:

[0038] 10. Wheel base;

[0039] 101. Base;

[0040] 1011. Pivot section;

[0041] 102. First clamping plate;

[0042] 103. Second clamping plate;

[0043] H10, Card holder slot;

[0044] H101, Opening;

[0045] H11, wheel groove;

[0046] S10, oblique cut surface;

[0047] 20. Rollers;

[0048] 21. Rotating shaft components;

[0049] 30. First gasket;

[0050] 31. Second gasket;

[0051] 40. Lamp base.

[0052] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0053] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0054] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "circumferential", "radial", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0055] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0056] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0057] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0058] The following describes in detail, with reference to the accompanying drawings, a pulley device for a lamp base 40 and a floor lamp having the same.

[0059] Reference Figures 1 to 3 As shown, the pulley device for lamp base 40 provided according to the embodiment of the present utility model is an independent accessory for easy and convenient installation on the edge of the base of an existing floor lamp, so as to enable it to move easily without affecting the original stability.

[0060] The pulley device includes a wheel seat 10, a roller 20, a first washer 30, and a second washer 31. The wheel seat 10 has a retaining groove H10, one side of which is open to form an opening H101. The wheel seat 10 is typically integrally molded from a rigid material such as high-strength plastic or metal. The cross-section of the wheel seat 10 is roughly U-shaped. During installation, the opening H101 is aligned with the edge of the lamp base 40, and the wheel seat 10 is slid into the retaining groove H10 from the side and locked into the edge of the lamp base 40. Preferably, the bottom surface of the wheel seat 10, i.e., the outer surface opposite to the bottom surface of the retaining groove H10, is typically a flat bottom surface. This flat bottom surface is the bearing surface that provides stable support when the floor lamp is in normal vertical position and in contact with the ground.

[0061] A roller 20 is mounted on the wheel base 10. The lowest point of the roller 20's surface is located above the bottom surface of the wheel base 10 and forms a predetermined distance between them. In other words, when the bottom surface of the wheel base 10 is placed flat on a level surface, the roller 20 is completely suspended, with a noticeable gap between its rim and the ground. This design ensures that when the lamp is stationary, the roller 20 does not bear any weight and will not slip due to uneven ground or accidental contact, thus guaranteeing the stability of the lamp during use.

[0062] A first gasket 30 is disposed on the bottom surface of the retaining groove H10. A second gasket 31 is disposed on the top surface of the retaining groove H10, and a retaining distance adapted to the thickness of the lamp base 40 is defined between the first gasket 30 and the second gasket 31. Preferably, the first gasket 30 and the second gasket 31 are rubber gaskets, and the material of the rubber gasket is selected from any one of silicone, polyurethane rubber, EPDM rubber, neoprene rubber, thermoplastic elastomer, natural rubber, or nitrile rubber. That is, the first gasket 30 and the second gasket 31 are preferably made of materials with good elasticity and a high coefficient of friction, such as rubber and silicone. On the one hand, the soft texture of these materials can effectively protect the surface coating or material of the lamp base 40 when clamped, avoiding scratches or indentations caused by hard contact; on the other hand, their elastic deformation capability allows the retaining distance defined between the first gasket 30 and the second gasket 31 to have a certain adaptive range, enabling a tight fit and stable clamping of the lamp base 40.

[0063] In practical use, users can choose to install two, three, or more pulley devices according to the size and weight of the lamp base 40, and distribute them roughly evenly along the edge of the base. The installation process is very simple; just align the locking slot H10 of each pulley device with its opening H101 through the edge of the lamp base 40 and push it in. The first pad 30 and the second pad 31 will firmly clamp the edge of the base due to their elasticity. When the floor lamp is upright and placed vertically, the entire weight of the lamp is transferred to the ground through the flat bottom surface of the wheel base 10, the rollers 20 are suspended and do not work, and the lamp is in a stable, stationary state. When the user needs to move the floor lamp, there is no need to lift the heavy lamp completely off the ground. The user only needs to hold the lamp post and tilt the entire floor lamp at a small angle in the direction to be moved or in any direction. As the lamp is tilted, its center of gravity shifts, and the load-bearing point is transferred from the entire bottom surface of the wheel base 10. When the tilt angle reaches a certain critical value, the previously suspended roller 20 will descend and contact the ground. Simultaneously, the bottom edge of the wheel base 10 will lift up as a fulcrum, transferring the weight of the lamp onto the roller 20. In this state, the user can push the lamp with minimal effort, allowing it to roll smoothly across the ground and easily reach a new position. After moving, simply straighten the lamp again, and the roller 20 will once again detach from the ground, restoring the bottom surface of the wheel base 10 to stable contact with the ground, instantly returning the lamp to a stable, stationary state.

[0064] According to the embodiments of this utility model, a pulley device for a lamp base 40 and a floor lamp having the same device are provided. This pulley device combines the stability of the floor lamp with the ease of movement. By providing a clamping groove H10 that can be clamped to the edge of the lamp base 40, and using the first pad 30 and the second pad 31 for a stable and damage-free clamping, this device can be easily attached to existing floor lamps of different thicknesses on the market, exhibiting strong versatility and compatibility. The lowest point of the wheel surface of the roller 20 is higher than the bottom surface of the wheel seat 10, ensuring that when the lamp is placed vertically, the roller 20 is suspended and does not contact the ground, and is directly supported by the bottom surface of the wheel seat 10. This ensures that the lamp has the same stability as a lamp without roller 20 when stationary, effectively preventing accidental slippage. When a user needs to move the light fixture, they simply tilt the fixture at a slight angle to allow the rollers 20 to contact the ground and bear weight. The fixture can then be easily and effortlessly pushed to its designated location. Once the fixture is in place, it can be straightened, and the device immediately returns to a stable position. Furthermore, this pulley system is an independent component, allowing users to choose according to their needs, thus providing flexibility and selectivity for different user requirements.

[0065] In one embodiment of this utility model, the first gasket 30 is a pre-installed part that is pre-installed on the bottom surface of the retaining groove H10. That is, the pulley device has been firmly fixed to the inner bottom surface of the retaining groove H10 by means of bonding, hot melting or snap-fit ​​when it leaves the factory.

[0066] The second shim 31 is a retrofitted component that is selectively installed onto the top surface of the retaining groove H10 during use. That is, the second shim 31 is not pre-installed on the wheel seat 10, but is provided to the user as an independent accessory, which the user selects and installs according to actual needs during use. Preferably, there are multiple second shims 31, each with a different thickness, allowing one of the multiple second shims 31 to be selectively installed on the top surface of the retaining groove H10 during use. For example, the kit may include second shims 31 in three specifications: thin, medium, and thick, for example, thicknesses of 6mm, 8mm, and 10mm respectively. Before installing the pulley device, the user can first observe or simply measure the thickness of their floor lamp base, and then select the one with the most suitable thickness from the provided multiple second shims 31. After selection, the user can install the second shim 31 on the top surface of the retaining groove H10.

[0067] Through the above design, users can actively and precisely adjust the effective clamping distance of the clamping slot H10. For example, when facing a very thin metal base, the user can choose to install the thickest second shim 31, thereby significantly reducing the clamping distance of the clamping slot H10 and ensuring that the pulley device can tightly clamp the base after installation without shaking or loosening. Conversely, if the user's lamp base 40 is very thick, the user can choose to install the thinnest second shim 31 to ensure that the clamping slot H10 has sufficient clamping distance to accommodate the base.

[0068] This modular and optional combination method allows the pulley system to adapt to various sizes of floor lamps on the market with a near-customized experience. It expands the versatility and compatibility of the pulley system, allowing for adaptation to lamp bases of various thicknesses through simple accessory replacements. This gives users greater freedom and initiative, enabling them to use it flexibly according to specific situations.

[0069] In one embodiment of the present invention, the predetermined spacing is configured such that when the tilt angle of the lamp base 40 is greater than or equal to 15°, the wheel surface of the roller 20 can contact the bearing ground on which the lamp base 40 is located.

[0070] In other words, only when the user tilts the lamp and its base as a whole, and the tilt angle reaches or exceeds a preset critical value of 15°, can the wheel surface of the roller 20 contact the supporting ground (such as the floor) where the lamp is located, thus entering a movable state. In this embodiment, the 15° tilt angle is an easy-to-operate and comfortable operating angle for the user. When the user needs to move the lamp, they only need to hold the lamp post and apply a lateral pulling force to easily tilt the lamp to 15°. This angle is not enough to cause the tall floor lamp to tip over, and it also does not require the user to expend too much force or make exaggerated bending movements. Once the tilt angle exceeds the critical point of 15°, the user will clearly feel the switch in the load-bearing method. The weight of the lamp is now supported by the roller 20, and the resistance to pushing suddenly decreases, at which point it can be smoothly rolled to the target position. In this way, clear operational feedback is provided to the user, making the entire moving process both effortless and safe.

[0071] In one embodiment of this utility model, the wheel seat 10 includes a base 101, a first clamping plate 102, and a second clamping plate 103. Preferably, the base 101, the first clamping plate 102, and the second clamping plate 103 are an integral structure. One end of the first clamping plate 102 is connected to the base 101; the second clamping plate 103 is located below the first clamping plate 102, and one end of the second clamping plate 103 is connected to the base 101. The first clamping plate 102, the second clamping plate 103, and the base 101 together define the retaining groove H10.

[0072] The roller 20 is rotatably mounted on the base 101 via a pivot 21, with the bottom surface of the second clamping plate 103 serving as the bottom surface of the wheel seat 10. Exemplarily, the pivot 21 is a metal pin or bolt that passes laterally through the center hole of the roller 20 and is mounted on the base 101 at both ends. This ensures that the roller 20 can be securely housed within the base 101 and can rotate freely and smoothly around the pivot 21. When the pulley device is installed on the lamp base 40, the edge of the lamp base 40 is inserted into the retaining groove H10 from the opening H101, its upper surface contacting the second washer 31 mounted on the first clamping plate 102, and its lower surface contacting the first washer 30 mounted on the second clamping plate 103.

[0073] The wheel seat 10 in this embodiment has a simple structure and reliable clamping installation. Furthermore, this modular design also facilitates the installation and maintenance of the product.

[0074] In one embodiment of the present invention, the base 101 has a pivot portion 1011 protruding away from the opening H101. The pivot portion 1011 has a groove H11 extending through the pivot portion 1011 in a vertical direction, and the roller 20 is located in the groove H11 and pivotally connected to the pivot portion 1011 through the rotating shaft 21.

[0075] This pivoting structure enhances the structural strength and load-bearing capacity of the roller 20. By mounting the roller 20 in the pivot joint 1011, the shaft 21 maintains extremely stable support, effectively resisting bending or breakage caused by long-term use or heavy loads, significantly improving the product's durability and reliability.

[0076] In one embodiment of the present invention, the base 101 has a beveled surface S10, which connects the outer surface of the pivot 1011 and the bottom surface of the second clamping plate 103, and is configured to be inclined from top to bottom in the direction from the pivot 1011 to the second clamping plate 103.

[0077] In this embodiment, the chamfered surface S10 on the base 101 provides space for the roller 20, making it easier for the roller 20 on the base 101 to contact the bearing ground when the user tilts and moves the lamp and its base. This prevents the part of the base 101 near the roller 20 from interfering with the contact between the roller 20 and the bearing ground. In this way, while ensuring that the bottom surface of the wheel seat 10 can contact the ground during normal use, the roller 20 can contact the bearing ground more smoothly and without obstacles during movement, thus improving its reliability in use.

[0078] In one embodiment of this utility model, the first gasket 30 is bonded to the bottom surface of the retaining groove H10, and the second gasket 31 is bonded to the top surface of the retaining groove H10. This bonding and fixing method is simple and convenient to use, and can also maintain reliable fixation under the clamping action of the first clamping plate 102 and the second clamping plate 103.

[0079] Reference Figures 4 to 6 As shown, the floor lamp of this utility model embodiment includes a lamp base 40 and at least one pulley device for the lamp base as described in the above embodiment, wherein the edge of the lamp base 40 is engaged in the retaining groove H10 of the pulley device.

[0080] According to an embodiment of this utility model, a floor lamp is provided, which has the aforementioned pulley device. This pulley device combines the stability of the floor lamp with the ease of movement. By setting a clamping groove H10 that can be clamped to the edge of the lamp base 40, and using the first and second pads 31 for a stable and damage-free clamping, this device can be easily attached to existing floor lamps of different thicknesses on the market, and has strong versatility and compatibility. The lowest point of the wheel surface of the roller 20 is higher than the bottom surface of the wheel base 10, ensuring that when the lamp is placed vertically, the roller 20 is suspended and does not contact the ground, and is directly supported by the bottom surface of the wheel base 10. This ensures that the lamp has the same stability as a lamp without roller 20 when stationary, effectively preventing accidental slippage. When the user needs to move the lamp, they only need to tilt the entire lamp at a simple angle to make the roller 20 contact the ground and bear the weight. At this time, the lamp can be easily and effortlessly pushed. After moving to the designated position, the lamp can be straightened, and the device immediately returns to a stable state. Furthermore, as an independent component, the pulley device can be selected by users according to their own needs, thus satisfying the flexibility and choice of different user requirements.

[0081] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0082] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A pulley device for a lamp base, characterized in that, include: A wheel seat, the wheel seat having a retaining groove, one side of the retaining groove being open to form an opening; A roller is mounted on a wheel seat, and the lowest point of the roller's surface is located above the bottom surface of the wheel seat and forms a predetermined distance between the roller and the bottom surface of the wheel seat. The first gasket is disposed on the bottom surface of the retaining groove; A second gasket is disposed on the top surface of the retaining groove, and a retaining distance adapted to the thickness of the lamp base is defined between the first gasket and the second gasket.

2. The pulley device for a lamp base according to claim 1, characterized in that, The first gasket is a pre-installed component that is pre-installed on the bottom surface of the retaining groove, and the second gasket is a post-installed component that is selectively installed on the top surface of the retaining groove during use.

3. The pulley device for a lamp base according to claim 2, characterized in that, There are multiple second gaskets, each with a different thickness, so that one of the multiple second gaskets can be selectively installed on the top surface of the retaining groove during use.

4. The pulley device for a lamp base according to claim 1, characterized in that, The predetermined spacing is configured such that when the tilt angle of the lamp base is greater than or equal to 15°, the wheel surface of the roller can contact the bearing ground on which the lamp base is located.

5. The pulley device for a lamp base according to claim 1, characterized in that, The wheel seat includes: Base; A first clamping plate, one end of which is connected to the base; The second clamping plate is located below the first clamping plate, and one end of the second clamping plate is connected to the base. The first clamping plate, the second clamping plate, and the base together define the retaining groove. The roller is rotatably mounted on the base via a rotating shaft, and the bottom surface of the second clamping plate serves as the bottom surface of the wheel seat.

6. The pulley device for a lamp base according to claim 5, characterized in that, The base has a pivot portion that protrudes toward the side away from the opening; The pivot portion has a groove extending through it in a vertical direction, and the roller is located in the groove and pivotally connected to the pivot portion via the rotating shaft.

7. The pulley device for a lamp base according to claim 6, characterized in that, The base has a beveled surface connecting the outer surface of the pivot and the bottom surface of the second clamping plate, and is configured to slope downwards in the direction from the pivot to the second clamping plate.

8. The pulley device for a lamp base according to claim 1, characterized in that, The first gasket and the second gasket are rubber gaskets, and the material of the rubber gaskets is selected from any one of silicone, polyurethane rubber, EPDM rubber, neoprene rubber, thermoplastic elastomer, natural rubber or nitrile rubber.

9. The pulley device for a lamp base according to claim 1, characterized in that, The first gasket is bonded to the bottom surface of the retaining groove, and the second gasket is bonded to the top surface of the retaining groove.

10. A floor lamp, characterized in that, include: Lamp base; At least one pulley device for a lamp base as described in any one of claims 1 to 9, wherein the edge of the lamp base is engaged in a retaining groove of the pulley device.

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