Patent Application
20230000244
This application claims priority to Chinese Patent Application No. 202121484431.1 filed Jul. 1, 2021, the disclosure of which is incorporated herein by reference in its entirety.
The present disclosure relates to the technical field of liftable tables and, in particular, to a liftable table leg and a liftable table.
Unfit student tables can affect children's physical health. In China, school-age children can't do their homework, or use computers, or read without student tables every day. Improper height and posture may cause children's myopia, hunchback and even scoliosis. Therefore, when selecting a student table or chair, the height of the user is taken into account so as to select a table or chair of an appropriate height.
At present, most of the lifting and lowering methods of the two-section liftable tables in the market are mainly carried out by the screw movement inside the legs of the table on both sides. The movement range of the large-sector product is 720 mm to 1200 mm, resulting in the inconvenience of the use of minors or shorter people.
In response to the above-mentioned problems, it is necessary to develop a liftable table leg and a liftable table to solve the problem of inconvenient use of minors or shorter people due to a high minimum height of the liftable table.
The present disclosure provides a liftable table leg and a liftable table, which can reduce the lowest height of the liftable table to be suitable for minors or shorter people.
The present disclosure adopts solutions described below.
A liftable table leg includes a bushing, a second fixing piece, a lift assembly, a fixing base, and a drive assembly.
A first fixing piece is sleeved on a periphery of a first end of the bushing.
The second fixing piece includes a fixing flange and an accommodation groove. The first end is fixed to a bottom end of the accommodation groove through the first fixing piece.
The lift assembly includes a lead screw and a nut. The nut is disposed coaxially with the bushing and fixedly disposed at a second end of the bushing. The lead screw is rotatably disposed in the bushing and threaded into the nut.
The fixing base is provided with a through hole. The second fixing piece is inserted into the through hole and fixedly disposed at the fixing base through the fixing flange.
The drive assembly includes a fixing frame. An end of the lead screw passing through the nut is rotatably connected to the fixing frame, and the drive assembly is configured to drive the lead screw to rotate.
A liftable table includes a table plate and the at least two liftable table legs. The table plate is fixedly connected to a fixing frame of each of the at least two liftable table legs.
Embodiments of the present disclosure are described in detail below. Examples of the embodiments are illustrated in the drawings. The same or similar reference numerals indicate the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the drawings are exemplary, intended to explain the present disclosure.
In the description of the present disclosure, it should be noted that the orientations or position relations indicated by terms such as center”, “above”, “below”, “left”, “right”, “vertical”, “horizontal”, “inside”, “outside”, and the like are based on orientations or position relations shown in the drawings. These orientations or position relations are intended only to facilitate and simplify description of the present disclosure and not to indicate or imply that a device or element referred to must have such specific orientations or must be configured or operated in such specific orientations. In addition, terms such as “first” and “second” are used merely for the purpose of description and are not to be construed as indicating or implying relative importance. For example, the terms “first position” and “second position” are two different positions.
Unless otherwise expressly specified and limited, the term “mounting”, “connected to each other”, “connected” or “fixed” is to be construed in a broad sense, for example, as fixedly connected, detachably connected, mechanically connected or electrically connected; directly connected to each other or indirectly connected to each other via an intermediary; or internally connected or interactional relationships between two components. For those of ordinary skill in the art, specific meanings of the above terms in the present disclosure can be understood according to specific conditions.
Unless otherwise expressly specified and limited, when a first feature is described as “above” or “below” a second feature, the first feature and the second feature may be in direct contact or be in contact via another feature between the two features. Moreover, when the first feature is described as “on”, “above”, or “over” the second feature, the first feature is right on, above, or over the second feature or the first feature is obliquely on, above, or over the second feature, or the first feature is simply at a higher level than the second feature. When the first feature is described as “under”, “below” or “underneath” the second feature, the first feature is right under, below, or underneath the second feature or the first feature is obliquely under, below, or underneath the second feature, or the first feature is simply at a lower level than the second feature.
Solutions of the present disclosure are further described below through embodiments in conjunction with the drawings.
A liftable table leg is provided in the present embodiment. As shown in
For the liftable table leg, a fixed block traditionally disposed at the bottom of the lead screw 31 is removed. The first fixing piece 13 is sleeved outside the bushing 1 so that the lead screw 31 is capable of penetrating the first fixing piece 13. Therefore, the thickness of the first fixing piece 13 does not affect the net stroke of the lead screw 31. Meanwhile, the bushing 1 is fixed in the accommodation groove 22 of the second fixing piece 2 through the first fixing piece 13, and the second fixing piece 2 is inserted into the through hole of the fixing base 4. Therefore, the lead screw 31 is capable of being closer to the ground and the net lift stroke of the lead screw 31 is capable of being further increased. The drive assembly 6 drives the lead screw 31 to rotate. As the nut 32 is fixedly connected to the bushing 1, the lead screw 31 moves up and down with respect to the nut 32 during rotation. The drive assembly 6 moves up and down synchronously with the lead screw 31 through the fixing frame to ensure that the drive assembly 6 is capable always of driving the lead screw 31 to rotate.
Optionally, the liftable table leg further includes a sliding block 311. As shown in
As shown in
The drive assembly 6 includes a drive motor 61, a worm 62, and a worm gear 63. The drive motor 61 is fixedly disposed at the fixing frame. The worm 62 is in transmission connection with an output end of the drive motor 61. The worm gear 63 is rotatably disposed at the fixing frame and is capable of rotating under the driving of the worm 62. The end of the lead screw 31 closer to the fixing frame passes through the worm gear 63, and rotates synchronously with the worm gear 63. The drive motor 61 is capable of providing power for adjusting the liftable table leg. The worm gear 63 and the worm 62 are capable of changing the transmission direction so that the drive motor 61 is capable of being disposed laterally without occupying the space at the top of the liftable table leg. Meanwhile, the worm gear 63 and the worm 62 are capable of achieving a certain deceleration effect, so that the adjustment speed of the liftable table leg is very smooth.
Optionally, the liftable table leg further includes a guide assembly 7. The guide assembly 7 includes a first sleeve 71 and a second sleeve 72. An end of the first sleeve 71 is fixedly disposed at the second fixing piece 2 (as shown in
Optionally, the liftable table leg further includes a gap filler 73. A gap is provided between the first sleeve 71 and the second sleeve 72. The gap filler 73 is fixedly disposed at the first sleeve 71 or the second sleeve 72, and the gap filler 73 circumferentially fills the gap between the first sleeve 71 and the second sleeve 72. The first sleeve 71 and the second sleeve 72 each have certain hardness. When the first sleeve 71 and the second sleeve 72 are in contact with each other, relative sliding will generate relatively large noise and relatively great friction, which seriously degrades the user experience. The gap filler 73 is capable of making the first sleeve 71 and the second sleeve 72 space apart by a certain gap, greatly reducing noise during sliding. Meanwhile, the gap filler 73 may be made of the material having a smooth surface. Therefore, the friction between the first sleeve 71 or the second sleeve 72 and the gap filler 73 can be reduced. The user can adjust the height of the liftable table leg more conveniently.
When the liftable table leg is lowered to the lowest height, the fixing frame will collide with the nut 32, easily causing damage to the liftable table leg and generating relatively large noise. In order to solve this problem, as shown in
The position between the cushion 321 and the nut 32 is relatively fixed. The cushion 321 is bonded and fixed to the nut 32 so as to reduce the assembly cost in the production process. In this manner, during assembly, an operator can assemble and fix the bonded cushion 321 and the nut 32 at one time, thereby improving assembling efficiency.
This embodiment also provides a liftable table. The liftable table uses at least two liftable table legs. When the bottom end of the lead screw 31 is closer to the bottom surface of the accommodation groove 22, the liftable table is at the lowest height. Not affected by the thickness of the second fixing piece 2 and the thickness of the fixing base 4, the liftable table is convenient for use by minors or shorter people.
As shown in
Optionally, two fixing ribs 81 are disposed on a lower side of the table plate 8. The fixing frame is clamped between the two fixing ribs 81 and fixed to the two fixing ribs 81 through screws. The fixing frame abuts against the bottom of the table plate 8 to support the table plate 8. The two fixing ribs 81 are capable of fixing the fixing frame. Moreover, because the fixing ribs 81 are located between the two liftable table legs, the fixing ribs 81 are also capable of supporting the table plate 8 to enhance the strength of the table plate 8 and prevent the table plate 8 from falling.
It is to be understood that when the liftable table leg is provided with the support base 5, the table plate 8 is directly and fixedly connected to the support base 5 through two fixing ribs 81. The distance between the two fixing ribs 81 is equal to the width of the support base 5.
Optionally, the liftable table further includes a control assembly 9. The control assembly 9 is disposed under the table plate 8, and the control assembly 9 is electrically connected to the drive assembly 6. The control assembly 9 is capable of controlling the drive assembly 6 to drive the lifting of the liftable table leg. The user can control the movement of the drive assembly 6 in realtime through the control assembly 9 so as to adjust the table plate 8 to an appropriate height.
The present disclosure provides a liftable table leg and a liftable table. For the liftable table leg, a fixed block at the bottom of the lead screw is removed. The first fixing piece is sleeved outside the bushing so that the lead screw is capable of penetrating the first fixing piece. Therefore, the thickness of the first fixing piece does not affect the net stroke of the lead screw. Meanwhile, the bushing is fixed in the accommodation groove of the second fixing piece through the first fixing piece, and the second fixing piece is inserted into the through hole of the fixing base. Therefore, the lead screw is capable of being closer to the ground and the net lift stroke of the lead screw is capable of being further increased.
The liftable table uses at least two liftable table legs. When the liftable table is used and the bottom end of the lead screw is closer to the bottom surface of the accommodation groove, the liftable table is at the lowest height. Not affected by the thickness of the second fixing piece and the thickness of the fixing base, the liftable table is convenient for use by minors or shorter people.
| Number | Date | Country | Kind |
|---|---|---|---|
| 202121484431.1 | Jul 2021 | CN | national |
