Segmented height-adjustable pull-out table

Abstract

A segmented height-adjustable pull-out table, comprising: a table frame structure (A1), wherein the table frame structure (A1) comprises a fixed table frame (A11) and a pull-out table frame (A12), a first guide rail (A113) is provided on the fixed table frame (A11), a first slider (A123) is provided on the pull-out table frame (A12), and when the pull-out table frame (A12) is pushed and pulled, the first slider (A123) slides on the first guide rail (A113), such that the table frame structure (A1) is switched between a deployed state and a storage state; a table board structure (A2), wherein the table board structure (A2) comprises a pull-out table board (A22) connected to the pull-out table frame (A12), and a first hidden table board (A23) connected to the fixed table frame (A11) and capable of moving up and down in a vertical direction; and a height-adjusting structure (A3), wherein the height-adjusting structure (A3) comprises a first height-adjusting auxiliary rail (A31) fixed below the first hidden table board (A23), a first upper groove (A311) located on an upper side and a first lower groove (A312) connected to the first upper groove (A311) and located on a lower side are provided on the first height-adjusting auxiliary rail (A31), and the first slider (A123) moves along the first upper groove (A311) and the first lower groove (A312) while sliding in the first guide rail (A113). The present invention solves the problem in the prior art of complex transformation operations for pull-out tables, making it difficult to individually accomplish the deployment and retraction of a tabletop.

Description

Segmented height-adjustable pull-out table Technical Field

[0001] This invention relates to the field of furniture technology, and in particular to a segmented, height-adjustable, pull-out table. Background Technology

[0002] As consumer demands continue to evolve, the variety of tables has also increased. Tables on the market can be categorized into several types based on their purpose: office desks, dining tables, school desks, computer desks, and study desks, each designed specifically for a particular activity.

[0003] Furthermore, the structural design of tables is constantly being innovated. For example, height-adjustable tables can be adjusted to suit different needs, while folding tables are easy to store and save space. Extendable tables, because they can flexibly switch between extension and storage, adapting to various usage scenarios, are becoming increasingly popular among home users.

[0004] Pull-out tables, as a type of extendable table, allow the desktop to be expanded and folded away through a simple pull-out motion. However, existing pull-out table designs are often quite complex, requiring two to three steps to unfold or fold the desktop, and usually necessitating assistance from others. To address these issues, the market urgently needs a new type of pull-out table that is simple in structure, easy to operate, and capable of independently unfolding and folding the desktop. Summary of the Invention

[0005] In view of the shortcomings of the prior art described above, the technical problem to be solved by the present invention is to provide a segmented lifting pull-out table, which solves the problem that the deformation operation of the pull-out table in the prior art is complicated and it is difficult to complete the unfolding and folding of the tabletop independently.

[0006] To solve the above-mentioned technical problems, the present invention provides a segmented lifting and pulling table, comprising:

[0007] The table frame structure includes a fixed table frame and a pull-out table frame that are slidably connected. The fixed table frame is provided with a first guide rail and a second guide rail, and the pull-out table frame is provided with a first slider and a second slider. When the pull-out table frame is pushed or pulled, the first slider slides on the first guide rail and the second slider slides on the second guide rail.

[0008] The tabletop structure includes a pull-out tabletop connected to a pull-out table frame, a fixed tabletop connected to a fixed table frame, a first hidden tabletop, and a second hidden tabletop. The first hidden tabletop and the second hidden tabletop can move up and down relative to the fixed tabletop.

[0009] The lifting structure includes a first lifting sub-rail fixed below the first hidden table panel and a second lifting sub-rail fixed below the second hidden table panel. The first lifting sub-rail is provided with a first upper groove on the upper side and a first lower groove connected to the first upper groove and located on the lower side. The first slider slides in the first guide rail and moves along the first upper groove and the first lower groove. The second lifting sub-rail is provided with a second upper groove on the upper side and a second lower groove connected to the second upper groove and located on the lower side. The second slider slides in the second guide rail and can move along the second upper groove and the second lower groove.

[0010] By pushing and pulling the pull-out table frame, the segmented lifting pull-out table can be switched between a stowed state, a first unfolded state, and a second unfolded state:

[0011] In the folded state, the first and second hidden tabletops are stored under the fixed tabletop, with the first slider located in the first upper groove and the second slider located in the second upper groove.

[0012] In the first unfolded state, the table frame structure is pulled, causing the first slider to slide along the first guide rail and move to the first lower groove. At this time, the pull-out table moves out of the position above the first hidden table, and the first lifting subrail rises under the action of the first slider, while lifting the first hidden table and making it flush with the pull-out table.

[0013] In the second unfolded state, continue to pull the table frame structure to separate the fixed table frame and the pull-out table frame, so that the second slider slides along the second guide rail and moves into the second lower groove at the same time. At this time, the pull-out table panel moves out of the position above the second hidden table panel, and the second lifting subrail rises under the action of the second slider, while lifting the second hidden table panel and making it flush with the pull-out table panel.

[0014] As a more preferred method, the second guide rails are two sets arranged opposite to each other, and the second sliders are two sets staggered along the unfolding direction. The two sets of second sliders are slidably mounted on the two sets of second guide rails.

[0015] As a more preferred method, it also includes a connecting rod, two second guide rails arranged symmetrically, the connecting rod being connected to the two second guide rails, two sets of second sliders staggered along the unfolding direction, and the connecting rod having a guide groove at the corresponding position of the second slider.

[0016] As a more preferred method, the fixed table frame is also provided with a third guide rail, and the pull-out table frame is provided with a third slider. When the pull-out table frame is pushed or pulled, the third slider slides on the third guide rail.

[0017] The tabletop structure further includes a third hidden tabletop connected to a fixed table frame and capable of moving vertically up and down;

[0018] The lifting structure includes a third lifting sub-rail fixed below the third hidden table panel. The third lifting sub-rail is provided with a third upper groove on the upper side and a third lower groove connected to the third upper groove and located on the lower side. The third slider slides in the third guide rail and can move along the third upper groove and the third lower groove. In the retracted state, the first hidden table panel and the second hidden table panel are both retracted below the fixed table panel. After the table frame structure is pulled into the second unfolded state, the fixed table frame and the pull-out table frame are further separated, so that the third slider slides along the third guide rail and moves from the third upper groove to the third lower groove. At this time, the pull-out table panel moves out of the position above the third hidden table panel, and the third lifting sub-rail rises under the action of the third slider, while lifting the third hidden table panel and making it flush with the pull-out table panel. The table frame structure is in the third unfolded state. During the switching process of the third slider from the third upper slot to the third lower slot, since the vertical height of the third slider remains unchanged, the relative height of the third lifting sub-rail gradually increases. Furthermore, during this switching process, the third slider applies an upward lifting force to the third lifting sub-rail. Under the action of this lifting force, the third lifting sub-rail rises and lifts the third hidden tabletop. At this time, the table frame structure is in the unfolded state. This structure satisfies the requirement that the segmented lifting pull-out table of the present invention can, according to different usage scenarios and needs, allow the table frame structure to be in the corresponding storage state, unfolded state, second unfolded state, and third unfolded state through a pull-out mechanism. Each of these states corresponds to a different size of the tabletop, thereby achieving greater applicability and versatility by accommodating more usage scenarios.

[0019] As a more preferred method, the tabletop structure also includes a fixed tabletop fixed to the fixed table frame. The fixed tabletop is flush with the pull-out tabletop, and in the folded state, the fixed tabletop and the pull-out tabletop are aligned and assembled into a complete desktop. In the folded state, the first hidden tabletop can be better concealed under the desktop by the fixed tabletop and the pull-out tabletop, resulting in a more aesthetically pleasing appearance.

[0020] As a more preferred method, the fixed table frame is provided with two symmetrical first guide rails, and the pull-out table frame is provided with two corresponding first sliders. When the pull-out table frame is pushed or pulled, the two first sliders slide on the corresponding first guide rails, so that the table frame structure switches between the unfolded state and the stored state. The symmetrical arrangement of the two first guide rails and the first sliders makes the table frame structure more stable as a whole, and the switching between the unfolded state and the stored state is also smoother.

[0021] As a more preferred approach, the fixed table frame is a frame structure assembled from a fixed beam and two fixed side rods perpendicular to both ends of the fixed beam, and the corresponding pull-out table frame is a frame structure assembled from a pull-out beam and two pull-out side rods perpendicular to both ends of the pull-out beam. The frame structure can protect and visually conceal the movement mechanism, improve the lifespan of the movement mechanism, and increase aesthetics.

[0022] As a more preferred embodiment, the fixed side rod includes a cavity for accommodating the pull-out side rod. The pull-out side rod is inserted into the cavity from one end of the fixed side rod and can reciprocate along the axial direction of the fixed side rod, assisting the table frame structure in switching between the unfolded and folded states, and further improving the stability and smoothness of the table frame structure in switching between the unfolded and folded states.

[0023] As a more preferred method, the fixed side rod is provided with a plurality of first limiting holes, and the bottom of the first hidden table panel is provided with a plurality of first pins that are adapted to the first limiting holes. The first hidden table panel is connected to the fixed table frame by inserting the first pins into the corresponding first limiting holes and can move up and down in the vertical direction.

[0024] As a more preferred method, the first lifting subrail is also provided with a first inclined groove connecting the first upper groove and the first lower groove. During the switching process from the first upper groove to the first lower groove, the first slider applies a lifting force to the first inclined groove, and the lifting force lifts the first hidden table panel.

[0025] As a more preferred embodiment, one side of the first slider is slidably mounted on the first guide rail, and the other side is provided with a first transmission pin. The first transmission pin is engaged with the first lifting sub-rail. When the first slider slides on the first guide rail, the first transmission pin moves along the first upper groove and the first lower groove.

[0026] As described above, the segmented lifting pull-out table of the present invention has the following beneficial effects: When the segmented lifting pull-out table of the present invention is used, pushing and pulling the pull-out table frame causes the first slider to slide on the first guide rail, allowing the table frame structure to switch between an unfolded state and a retracted state. In the retracted state, the first hidden table panel is retracted below the fixed table panel, while the first slider is located in the first upper groove. Pulling the table frame structure separates the fixed table frame from the pull-out table frame. The first slider slides along the first guide rail and simultaneously moves along the first upper groove towards the first lower groove. When the pull-out table panel moves out of the position above the first hidden table panel, the first slider moves into the first lower groove. Since the vertical height of the first slider remains unchanged, during the switching process of the first slider from the first upper groove to the first lower groove, the relative height of the first lifting sub-rail gradually increases. Moreover, during this switching process, the first slider applies an upward lifting force to the first lifting sub-rail. Under the action of the lifting force, the first lifting sub-rail rises and lifts the first hidden table panel. At this time, the table frame structure is in the unfolded state. It can be seen that the switching process between the above-mentioned retracted and unfolded states... The process involves simply pulling the table frame structure to bring the fixed table frame and the pull-out table frame closer together or separate them. During this process, the first lifting auxiliary rail automatically raises or lowers the first hidden table panel, thereby unfolding or folding the entire desktop. The entire switching process is simple and can be easily completed by a single person. Furthermore, during the switching process of the second slider from the second upper slot to the second lower slot, since the vertical height of the second slider remains unchanged, the relative height of the second lifting auxiliary rail gradually increases. Moreover, during this switching process, the second slider applies an upward lifting force to the second lifting auxiliary rail, causing the second lifting auxiliary rail to rise and lift the second hidden table panel. At this time, the table frame structure is in the unfolded state. This structure allows the segmented lifting pull-out table of the present invention to be in the corresponding folded state, unfolded state, and second unfolded state according to different usage occasions and needs. Each of these states corresponds to a different size of the desktop, thereby accommodating multiple usage scenarios and improving applicability and practicality.

[0027] To solve the above-mentioned technical problems, the present invention provides a segmented lifting and pulling table, comprising:

[0028] A table frame assembly includes a fixed table frame and a pull-out table frame slidably connected to the fixed table frame, wherein the pull-out table frame is provided with a first pivot pin and a second pivot pin;

[0029] A tabletop assembly, comprising a pull-out tabletop mounted on the pull-out table frame, a first lifting tabletop and a second lifting tabletop that are lifted and lowered on a fixed table frame;

[0030] The lifting structure includes a first lifting rail and a second lifting rail, which are respectively disposed below and connected to the first and second lifting tabletops. The first and second lifting rails are respectively provided with a first lifting groove and a second lifting groove. The first and second axle pins are respectively slidably disposed in the first and second lifting grooves. Pulling out the pull-out tabletop causes the first and second axle pins to move along the first and second lifting grooves, so that the segmented lifting pull-out tabletop switches between a folded state, a first unfolded state, and a second unfolded state.

[0031] In the stowed state, the first and second lifting tabletops are stored below the pull-out tabletop. Pulling the pull-out table frame away from the fixed table frame causes the pull-out tabletop to retract, freeing up the upper space of the first lifting tabletop. The first pivot pin, through the relative movement of the first lifting groove, simultaneously lifts the first lifting tabletop until it is flush with the pull-out tabletop, at which point the system switches to the first unfolded state. Continuing to pull the pull-out table frame away from the fixed table frame causes the pull-out tabletop to retract, freeing up the upper space of the second lifting tabletop. The second pivot pin, through the relative movement of the second lifting groove, simultaneously lifts the second lifting tabletop until it is flush with the pull-out tabletop, at which point the system switches to the second unfolded state.

[0032] As a more preferred embodiment, the first lifting groove includes a first upper groove, a first lower groove, and a first inclined groove connecting the first upper groove and the first lower groove. The first axle pin switches between the first upper groove and the first lower groove via the first inclined groove. When the first axle pin is located in the first upper groove, the first lifting rail is retracted below the tabletop assembly. When the first axle pin is located in the first lower groove, the first lifting rail is raised and lifts the first lifting tabletop. The second lifting groove includes a second upper groove, a second lower groove, and a second inclined groove connecting the second upper groove and the second lower groove. The second axle pin switches between the second upper groove and the second lower groove via the second inclined groove. When the second axle pin is located in the second upper groove, the second lifting rail is retracted below the tabletop assembly. When the second axle pin is located in the second lower groove, the second lifting rail is raised and lifts the second lifting tabletop. The advantage is that the segmented design of the first and second lifting grooves provides precise trajectory guidance for the sliding of the axle pin. When the axle pin moves within the inclined groove, it converts the horizontal movement of the pull-out table frame into the vertical lifting movement of the lifting rail, making the lifting process of the tabletop smooth and stable. The upper slot corresponds to the folded-out state, and the lower slot corresponds to the unfolded state. The clear division of the positions ensures the structural stability of the table in different states and prevents the lifting table from moving accidentally during use.

[0033] As a more preferred embodiment, the fixed table frame includes two fixed side rails and a fixed beam vertically connecting the ends of the two fixed side rails. The pull-out table frame includes two pull-out side rails and a pull-out beam connecting the ends of the two pull-out side rails. The pull-out side rails are slidably mounted on the fixed side rails. Pulling the pull-out beam causes the two pull-out side rails to slide on the fixed side rails. The advantage is that the track-like design of the fixed and pull-out table frames provides stable guidance for the movement of the pull-out table frame, ensuring a smooth and seamless pull-out process. The fixed beam and pull-out beam respectively enhance the structural strength of the table frames on both sides, making the table frame more stable when bearing the weight of the tabletop, reducing the risk of deformation, and extending the lifespan of the table.

[0034] As a more preferred embodiment, the pull-out table frame further includes a first slide rail connecting rod and a second slide rail connecting rod. The ends of the first and second slide rail connecting rods are respectively vertically fixed to the two pull-out side rails. The first and second lifting rails are respectively positioned above the first and second slide rail connecting rods. The advantage is that the first and second slide rail connecting rods connect the two pull-out side rails into a single unit, improving the structural rigidity of the pull-out table frame and preventing the side rails from shifting or deforming during the pull-out process. Simultaneously, the connecting rods provide a stable mounting base for the lifting rails, ensuring uniform force distribution during movement, further guaranteeing the smooth lifting and lowering of the tabletop and enhancing the overall structural reliability.

[0035] As a more preferred embodiment, the first axle pin comprises two pins, each disposed inside the pull-out side rail; the lifting structure includes two symmetrically arranged first lifting rails, with the two first axle pins slidably disposed within corresponding first lifting grooves of the first lifting rails; the beneficial effect is that the two first axle pins and the symmetrically arranged first lifting rails ensure balanced force on both sides of the first lifting tabletop, avoiding tilting or jamming caused by unilateral force. The synchronous sliding of the axle pins within their corresponding lifting grooves ensures the synchronicity of the lifting process of the tabletop, improves the flatness and stability of the unfolded tabletop, reduces structural wear, and extends service life.

[0036] As a more preferred method, the first slide rail connecting rod is provided with a first protrusion, and the second shaft pin is disposed on the first protrusion; the advantage is that the first protrusion provides a reasonable installation position for the second shaft pin, making the fit between the shaft pin and the second lifting rail more precise.

[0037] As a more preferred embodiment, the first lifting groove includes two upper first grooves and two inclined first grooves. The two upper first grooves are connected to the lower first groove via corresponding inclined first grooves. A third pivot pin is also provided on the inner side of the pull-out side rail. The first and third pivot pins are slidably disposed within the first lifting groove and spaced apart. When the pull-out table frame is pulled out, the first and third pivot pins simultaneously switch between the upper and lower first grooves via their corresponding inclined first grooves. The advantages are that the interconnected design of the two upper first grooves, the two inclined first grooves, and the lower first groove, combined with the spaced arrangement of the first and third pivot pins, provides multi-point support and more even force distribution to the first lifting rail during movement. The synchronous sliding of the pivot pins along the inclined grooves enhances the stability of the lifting rail movement, reduces swaying, and makes the lifting and retraction of the first lifting table smoother, thus improving the structural durability.

[0038] As a more preferred embodiment, a second protrusion is provided in the middle of the second slide rail connecting rod, and a fourth axle pin is provided on the second protrusion. A third lifting groove is provided on the second lifting rail, and the fourth axle pin is slidably disposed in the third lifting groove. When the pull-out table frame is pulled out, the second axle pin and the fourth axle pin simultaneously drive the second lifting rail to move up and down, improving the stability of the lifting process. The beneficial effect is that the cooperation between the fourth axle pin and the third lifting groove, together with the second axle pin, forms a double support for the second lifting rail, ensuring that the second lifting rail is subjected to balanced forces during lifting and avoiding deviation or jamming caused by unilateral force. This double guidance improves the stability and accuracy of the movement of the second lifting tabletop, ensuring that it can be smoothly lifted and aligned with other tabletops, enhancing the structural reliability of the table in its unfolded state.

[0039] As a more preferred approach, the second and third lifting grooves are respectively located on both sides of the second lifting rail. The second and fourth axle pins are respectively engaged into the second and third lifting grooves from both sides, which can better limit the movement of the second lifting rail and improve the stability of the mechanism. The beneficial effect is that the second and third lifting grooves being located on both sides allows the second and fourth axle pins to limit the movement of the second lifting rail from both sides, effectively restricting the horizontal swaying of the lifting rail. This double-sided limiting design significantly improves the stability of the mechanism's movement, ensuring that the second lifting table maintains precise positioning during lifting and use, reducing structural wear, and extending its service life.

[0040] As a more preferred embodiment, the segmented lifting and pulling table further includes several stop rods with one end rotatably mounted on the first and second lifting rails. By rotating the stop rods, the first or second axle pin can be limited or released, preventing the first or second axle pin from sliding and causing a state change due to collision or vibration. The beneficial effect is that the stop rods can limit or release the axle pins by rotation, effectively preventing accidental sliding of the axle pins due to collisions, vibrations, or other external forces when the table is in a certain state, avoiding unexpected changes in the table's state, and improving safety and stability during use. The stop rods are simple to operate and provide a reliable guarantee for locking the table's state.

[0041] As described above, the segmented lifting and pull-out table of the present invention has the following beneficial effects:

[0042] The segmented lifting pull-out table of this invention achieves flexible switching between a folded state, a first unfolded state, and a second unfolded state through the cooperation of the table frame assembly, tabletop assembly, and lifting structure. In the folded state, the tabletop is compactly folded away, significantly saving space and facilitating storage and transportation; in the first and second unfolded states, the tabletop area can be gradually expanded according to usage needs, meeting the needs of different scenarios. The pull-out tabletop drives the pivot pin to move along the lifting groove, automatically lifting and leveling the tabletop. This convenient operation requires no complex installation, enhancing the table's practicality and flexibility. Specifically, when the pull-out tabletop is pulled out, the first or second pivot pin changes position within the first or second lifting groove. Since the first and second pivot pins are mounted on the pull-out tabletop and their vertical height remains constant, the first or second lifting rail is lifted or lowered, thereby raising and lowering the first and second lifting tabletops. It can be seen that the switching process between the three states only requires pulling the pull-out table frame to bring the fixed and pull-out table frames closer together or separate them. The switching steps between the three states are simple and logically consistent, allowing a single person to easily complete the transformation operation, making it easier to learn and master.

[0043] In summary, the segmented lifting pull-out table of the present invention, through the linkage of various components, enables the first hidden table panel to adaptively adjust its height while the table frame structure switches between the folded and unfolded states. This eliminates the need for manual operation, simplifies the switching process, and allows a single person to complete the transformation. It solves the problem in the prior art where the transformation operation of pull-out tables is complex and it is difficult to unfold and fold the tabletop independently. Attached Figure Description

[0044] Figure 1 shows an exploded view of the segmented lifting and pulling table of Embodiment 1;

[0045] Figure 2 shows a schematic diagram of the installation of the tabletop structure and table frame structure of the segmented lifting pull-out table in Example 1;

[0046] Figure 3 shows a schematic diagram of the table frame structure of the segmented lifting pull-out table in the storage state of Example 1;

[0047] Figure 4 shows a schematic diagram of the first lifting auxiliary rail of the segmented lifting pull-out table in Embodiment 1;

[0048] Figure 5 shows a schematic diagram of the second lifting auxiliary rail of the segmented lifting pull-out table in Embodiment 1;

[0049] Figure 6 shows a schematic diagram of the installation of the first slider and the first guide rail of the segmented lifting pull-out table in Embodiment 1;

[0050] Figure 7 shows a schematic diagram of the storage state of the segmented lifting pull-out table of Example 1;

[0051] Figure 8 shows a schematic diagram of the switching between the folded and unfolded states of the segmented lifting pull-out table of Embodiment 1.

[0052] Figure 9 shows a schematic diagram of the unfolded state of the segmented lifting pull-out table of Embodiment 1;

[0053] Figure 10 shows a schematic diagram of the transition from the unfolded state to the second unfolded state of the segmented lifting pull-out table of Embodiment 1.

[0054] Figure 11 shows a schematic diagram of the second unfolded state of the segmented lifting pull-out table of Embodiment 1;

[0055] Figure 12 shows a schematic diagram of the connecting rod structure in another embodiment of the segmented lifting pull-out table of Embodiment 1;

[0056] Figure 13 shows an exploded view of the segmented lifting and pulling table of Embodiment 2;

[0057] Figure 14 shows a schematic diagram of the frame of the segmented lifting pull-out table in Embodiment 2;

[0058] Figure 15 shows a magnified view of a portion of region A in Figure 14;

[0059] Figure 16 shows a schematic diagram of the first lifting rail of the segmented lifting pull-out table in Embodiment 2;

[0060] Figure 17 shows a schematic diagram of one side of the second lifting rail of the segmented lifting pull-out table in Embodiment 2;

[0061] Figure 18 shows a schematic diagram of the other side of the second lifting rail of the segmented lifting pull-out table in Embodiment 2;

[0062] Figure 19 shows a schematic diagram of the segmented lifting pull-out table in the storage state of Example 2;

[0063] Figure 20 shows a schematic diagram of the segmented lifting pull-out table in its stored state according to Example 2;

[0064] Figure 21 shows a schematic diagram of the first unfolded state of the segmented lifting pull-out table of Embodiment 2;

[0065] Figure 22 shows a schematic diagram of the frame of the segmented lifting pull-out table in the first unfolded state of Embodiment 2;

[0066] Figure 23 shows a schematic diagram of the reserved gap when the segmented lifting pull-out table of Embodiment 2 is unfolded from the storage state to the first unfolded state;

[0067] Figure 24 shows a schematic diagram of the second unfolded state of the segmented lifting pull-out table of Embodiment 2;

[0068] Figure 25 shows a schematic diagram of the frame of the segmented lifting pull-out table in the second unfolded state according to Embodiment 2.

[0069] Component Numbering Explanation: A1 Table Frame Structure A11 Fixed Table Frame A111 Fixed Beam A112 Fixed Side Rod A112a First Limiting Hole A112b Second Limiting Hole A12 Pull-out Table Frame A121 Pull-out Beam A122 Pull-out Side Rod A123 First Slider A123a First Transmission Pin A124 Second Slider A124a Second Transmission Pin A113 First Guide Rail A114 Second Guide Rail A115 Connecting Rod A115a Guide Groove A2 Tabletop Structure A21 Fixed Tabletop A22 Pull-out Tabletop A23 First Hidden Tabletop A231 First Pin A24 Second Hidden Tabletop A241 Second Pin A3 Lifting Structure A31 First Lifting Sub-rail A311 First Upper Groove A312 First Lower Groove A313 First Inclined Groove A32 Second Lifting Sub-rail A321 Second Upper Groove A322 Second Lower Groove A323 Second Inclined Groove A4 Table legs B1, table frame assembly B11Fixed table frame B111, Fixed side rail B111a, Positioning hole B112, Fixed beam B12; Pull-out table frame B121, Pull-out side rail B121a, First axle pin B121b, Third axle pin B122, Pull-out beam B123, First slide rail connecting rod B123a, First protrusion B123b, Second axle pin B124, Second slide rail connecting rod B124a, Second protrusion B124b, Fourth axle pin B2; Tabletop assembly B21, Pull-out tabletop B22, First lifting tabletop B221, First positioning pin B23, Second lifting tabletop B231, Second positioning pin B24, Fixed tabletop B3; Lifting structure B31, First lifting rail B311, First lifting groove B311a, First upper groove B311b, First lower groove B311c, First inclined groove B311d, First extension section B32, Second lifting rail B321, Second lifting groove B321a, Second upper groove B321b Second lower groove B321c, second inclined groove B321d, second extension section B322Third lifting groove B322a, Third upper groove B322b, Third lower groove B322c, Third inclined groove B322d, Third extension section B4, Table leg Detailed Implementation

[0070] The following specific embodiments illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification.

[0071] It should be understood that the structures, proportions, sizes, etc., illustrated in the accompanying drawings are merely for illustrative purposes to aid those skilled in the art and are not intended to limit the implementation of the invention. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effectiveness and purpose of the invention, should still fall within the scope of the disclosed technical content. The following detailed description should not be considered restrictive, and the scope of the embodiments of this application is limited only by the claims of the published patents. The terminology used herein is for describing specific embodiments only and is not intended to limit the application. Spatial terms such as "upper," "lower," "left," "right," "below," "below," "lower part," "above," "upper part," etc., may be used in the text to illustrate the relationship between one element or feature shown in the figures and another element or feature.

[0072] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," "fixing," and "holding" 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 invention according to the specific circumstances.

[0073] Furthermore, as used herein, the singular forms “a,” “an,” and “the” are intended to include the plural forms as well, unless the context indicates otherwise. It should be further understood that the terms “comprising,” “including,” indicate the presence of the stated feature, operation, element, component, item, kind, and / or group, but do not preclude the presence, occurrence, or addition of one or more other features, operations, elements, components, items, kinds, and / or groups. The terms “or” and “and / or” as used herein are interpreted as inclusive, or mean any one or any combination thereof. Thus, “A, B, or C” or “A, B, and / or C” means “any one of: A; B; C; A and B; A and C; B and C; A, B, and C.” Exceptions to this definition arise only when combinations of elements, functions, or operations are inherently mutually exclusive in some manner.

[0074] Example 1:

[0075] As shown in Figures 1 to 11, the present invention provides a segmented lifting and pulling table, comprising:

[0076] The table frame structure A1 includes a fixed table frame A11 and a pull-out table frame A12 that are slidably connected. The fixed table frame A11 is provided with a first guide rail A113 and a second guide rail A114. The pull-out table frame A12 is provided with a first slider A123 and a second slider A124. When the pull-out table frame A12 is pushed or pulled, the first slider A123 slides on the first guide rail A113, and the second slider A124 slides on the second guide rail A114.

[0077] The tabletop structure A2 includes a pull-out tabletop A22 connected to a pull-out table frame A12, a fixed tabletop A21 connected to a fixed table frame A11, a first hidden tabletop A23, and a second hidden tabletop A24. The first hidden tabletop A23 and the second hidden tabletop A24 can move up and down relative to the fixed tabletop A21.

[0078] The lifting structure A3 includes a first lifting sub-rail A31 fixed below the first hidden tabletop A23 and a second lifting sub-rail A32 fixed below the second hidden tabletop A24. The first lifting sub-rail A31 is provided with a first upper groove A311 located on the upper side and a first lower groove A312 connected to the first upper groove A311 and located on the lower side. The first slider A123 slides in the first guide rail A113 and moves along the first upper groove A311 and the first lower groove A312. The second lifting sub-rail A32 is provided with a second upper groove A321 located on the upper side and a second lower groove A322 connected to the second upper groove A321 and located on the lower side. The second slider A124 slides in the second guide rail A114 and can move along the second upper groove A321 and the second lower groove A322.

[0079] By pushing and pulling the pull-out table frame A12, the segmented lifting pull-out table can be switched between a stowed state, a first unfolded state, and a second unfolded state:

[0080] In the retracted state, the first hidden tabletop A23 and the second hidden tabletop A24 are retracted below the fixed tabletop A21, while the first slider A123 is located within the first upper groove A311 and the second slider A124 is located within the second upper groove A321.

[0081] In the first unfolded state, the table frame structure A1 is pulled, causing the first slider A123 to slide along the first guide rail A113 and move to the first lower groove A312. At this time, the pull-out table panel A22 moves out of the position above the first hidden table panel A23, and the first lifting sub-rail A31 rises under the action of the first slider A123, while lifting the first hidden table panel A23 and making it flush with the pull-out table panel A22.

[0082] In the second unfolded state, continue to pull the table frame structure A1 to separate the fixed table frame A11 from the pull-out table frame A12, so that the second slider A124 slides along the second guide rail A114 and moves into the second lower groove A322 at the same time. At this time, the pull-out table panel A22 moves out of the position above the second hidden table panel A24, and the second lifting sub-rail A32 rises under the action of the second slider A124, while lifting the second hidden table panel A24 and making it flush with the pull-out table panel A22.

[0083] To better illustrate the segmented lifting pull-out table of the present invention, a specific application is described below: When the segmented lifting pull-out table of the present invention is in use, pushing and pulling the pull-out table frame A12 causes the first slider A123 to slide on the first guide rail A113, allowing the table frame structure A1 to switch between an unfolded state and a retracted state. In the retracted state, as shown in Figure 7, the first hidden table panel A23 is retracted below the fixed table panel A21, while the first slider A123 is located within the first upper groove A311. Pulling the table frame structure A1 causes the fixed table panel A11 to separate from the pull-out table frame A12. The first slider A123 slides along the first guide rail A113 and simultaneously moves along the first upper groove A311 towards the first... As the lower slot A312 moves, and the pull-out tabletop A22 moves out of the position above the first hidden tabletop A23, the first slider A123 moves into the first lower slot A312. Since the vertical height of the first slider A123 remains unchanged, during the switching process of the first slider A123 from the first upper slot A311 to the first lower slot A312, the relative height of the first lifting auxiliary rail A31 gradually increases. Moreover, during this switching process, the first slider A123 applies an upward lifting force to the first lifting auxiliary rail A31. Under the action of the lifting force, the first lifting auxiliary rail A31 rises and lifts the first hidden tabletop A23. At this time, the table frame structure A1 is in the unfolded state, as shown in Figure 9; it can be seen that the above-mentioned storage state... The switching process between the fixed and extended states only requires pulling the table frame structure A1 to bring the fixed table frame A11 and the pull-out table frame A12 closer together or separate them. During this process, the first lifting sub-rail A31 automatically raises or lowers the first hidden table panel A23, thus unfolding or folding the entire tabletop. The entire switching process is simple and can be easily completed by a single person. It can be seen that the segmented lifting pull-out table of the present invention, through the linkage between the first slider A123 and the first guide rail A113 and the first lifting sub-rail A31, achieves the simultaneous switching of the table frame structure A1 between the folded and extended states, and the simultaneous raising or lowering of the first hidden table panel A23. 23 can adaptively coordinate with lifting and lowering without manual operation. The switching steps are simple, and a single person can complete the transformation, solving the problem that the transformation operation of pull-out tables in the prior art is complicated and difficult to complete the unfolding and folding of the tabletop independently. Furthermore, during the switching process of the second slider A124 from the second upper slot A321 to the second lower slot A322, since the vertical height of the second slider A124 remains unchanged, the relative height of the second lifting sub-rail A32 gradually increases. Moreover, during this switching process, the second slider A124 applies an upward lifting force to the second lifting sub-rail A32. Under the action of the lifting force, the second lifting sub-rail A32 rises and lifts the second hidden tabletop A24. At this time, the table frame structure A1 is in the unfolded state.This structure allows the segmented, height-adjustable, pull-out table of this invention to be positioned in three states—a stowed state, an unfolded state, and a second unfolded state—by pulling it out according to different usage scenarios and needs. Each state corresponds to a different size of the tabletop, thus accommodating various usage scenarios and improving applicability and practicality.

[0084] In some embodiments of the present invention, as shown in FIG1, the second guide rails A114 are two sets arranged opposite to each other, and the second sliders A124 are two sets staggered along the unfolding direction. The two sets of second sliders A124 are slidably mounted on the two sets of second guide rails A114. In another embodiment of the present invention, as shown in FIG12, the fixed table frame also includes a connecting rod A115. The second guide rails A114 are two symmetrically arranged, and the connecting rod A115 is connected to the two second guide rails A114. The second sliders A124 are two sets staggered along the unfolding direction, and the connecting rod A115 is provided with a guide groove A115a at the corresponding position of the second slider A124.

[0085] In some embodiments of the present invention, as shown in FIG1, the fixed table frame A11 is a frame structure assembled from a fixed beam A111 and two fixed side rods A112 perpendicular to both ends of the fixed beam A111. Correspondingly, the pull-out table frame A12 is a frame structure assembled from a pull-out beam A121 and two pull-out side rods A122 perpendicular to both ends of the pull-out beam A121. The frame structure can protect and visually obscure the movement mechanism, improve the lifespan of the movement mechanism, and increase aesthetics.

[0086] In some embodiments of the present invention, as shown in Figures 1, 2 and 3, the table frame structure A1 further includes four table legs A4, which are respectively fixed to both ends of the fixed beam A111 and the pull-out beam A121 to provide support for the fixed table frame A11 and the pull-out table frame A12.

[0087] In some embodiments of the present invention, as shown in FIG1, the fixed side rod A112 includes a cavity for accommodating the pull-out side rod A122. The pull-out side rod A122 is inserted into the cavity from one end of the fixed side rod A112 and can reciprocate along the axial direction of the fixed side rod A112, assisting the table frame structure A1 in switching between the unfolded state and the stored state, and further improving the stability and smoothness of the table frame structure A1 in switching between the unfolded state and the stored state.

[0088] In some embodiments of the present invention, as shown in Figures 1 and 2, the fixed table frame A11 is provided with two symmetrical first guide rails A113, and the pull-out table frame A12 is provided with two corresponding first sliders A123. When the pull-out table frame A12 is pushed or pulled, the two first sliders A123 slide on the corresponding first guide rails A113, so that the table frame structure A1 switches between the unfolded state and the folded state. The symmetrical arrangement of the two first guide rails A113 and the first sliders A123 makes the table frame structure A1 more stable as a whole, and the switching between the unfolded state and the folded state is also smoother. Furthermore, in this embodiment, one end of each of the two first guide rails A113 is vertically fixed to the fixed beam A111 and close to the fixed side rods A112 on both sides. The first guide rails A113 and the fixed side rods A112 are arranged parallel to each other.

[0089] In some embodiments of the present invention, as shown in Figures 1 and 2, the fixed side rod A112 is provided with a plurality of first limiting holes A112a, and the bottom of the first hidden table panel A23 is provided with a plurality of first pins A231 that are adapted to the first limiting holes A112a. The first hidden table panel A23 is connected to the fixed table frame A11 by inserting the first pins A231 into the corresponding first limiting holes A112a and can move up and down in the vertical direction. Further, in this embodiment, the first hidden table panel A23 is provided with four first pins A231, and the fixed side rod A112 is provided with four first limiting holes A112a corresponding to the first pins A231.

[0090] In some embodiments of the present invention, as shown in FIG4, the first lifting subrail A31 is further provided with a first inclined groove A313 connecting the first upper groove A311 and the first lower groove A312. During the switching process from the first upper groove A311 to the first lower groove A312, the first slider A123 applies a lifting force to the first inclined groove A313, and the lifting force lifts the first hidden table A23.

[0091] In some embodiments of the present invention, as shown in FIG4, one end of the first lower groove A312 connected to the first inclined groove A313 extends a distance toward the fixed table frame A11. When the first slider A123 just moves along the first inclined groove A313 to the first lower groove A312, in order to facilitate the complete lifting of the first hidden table panel A23, the pull-out table panel A22 moves a distance further toward the pull-out table frame A12, leaving some slack. Although the first hidden table panel A23 is completely lifted to the position flush with the pull-out table panel A22, due to the slack, there is still a certain gap between the first hidden table panel A23 and the pull-out table panel A22, as shown in FIG8. Then, the pull-out table frame A12 is pushed in the opposite direction, so that the first slider A123 moves toward the groove extending from the first lower groove A312, so that the pull-out table frame A12 abuts against the first hidden table panel A23, thereby forming a complete tabletop, as shown in FIG9.

[0092] In some embodiments of the present invention, as shown in FIG6, one side of the first slider A123 is slidably disposed on the first guide rail A113, and the other side is provided with a first transmission pin A123a. The first transmission pin A123a is engaged on the first lifting sub-rail A31. When the first slider A123 slides on the first guide rail A113, the first transmission pin A123a moves along the first upper groove A311, the first inclined groove A313 and the first lower groove A312. Furthermore, in this embodiment, the first lifting sub-rail A31 includes two sets of first upper groove A311, first inclined groove A313 and first lower groove A312 arranged side by side. Correspondingly, two first transmission pins A123a are arranged side by side on the first slider A123, respectively disposed in the corresponding first upper groove A311, first inclined groove A313 and first lower groove A312.

[0093] In some embodiments of the present invention, as shown in Figures 1 and 2, the tabletop structure A2 further includes a fixed tabletop A21 fixed to the fixed table frame A11. The fixed tabletop A21 is flush with the pull-out tabletop A22, and in the folded state, the fixed tabletop A21 and the pull-out tabletop A22 are aligned and assembled into a complete desktop. In the folded state, the first hidden tabletop A23 can be better hidden under the desktop through the fixed tabletop A21 and the pull-out tabletop A22, resulting in a more aesthetically pleasing appearance.

[0094] In some embodiments of the present invention, as shown in Figures 1, 2, and 3, the fixed table frame A11 is provided with two symmetrical second guide rails A114, and the pull-out table frame A12 is provided with two corresponding second sliders A124. When the pull-out table frame A12 is pushed or pulled, the two second sliders A124 slide on the corresponding second guide rails A114, allowing the table frame structure A1 to switch between an unfolded state and a retracted state. The symmetrical arrangement of the two second guide rails A114 and the second sliders A124 makes the table frame structure A1 more stable as a whole, and the switching between the unfolded state and the retracted state is also smoother. Furthermore, in this embodiment, one end of each of the two second guide rails A114 is vertically fixed to the fixed beam A111 and close to the fixed side rods A112 on both sides, and the second guide rails A114 are arranged parallel to the fixed side rods A112.

[0095] In some embodiments of the present invention, as shown in Figures 1 and 2, the fixed side rod A112 is provided with a plurality of second limiting holes A112b, and the bottom of the second hidden table panel A24 is provided with a plurality of second pins A241 that are adapted to the second limiting holes A112b. The first hidden table panel A23 is connected to the fixed table frame A11 by inserting the second pins A241 into the corresponding second limiting holes A112b and can move up and down in the vertical direction. Further, in this embodiment, the second hidden table panel A24 is provided with four second pins A241, and the fixed side rod A112 is provided with four second limiting holes A112b corresponding to the second pins A241.

[0096] In some embodiments of the present invention, as shown in FIG5, the second lifting subrail A32 is further provided with a second inclined groove A323 connecting the second upper groove A321 and the second lower groove A322. During the switching process of the second slider A124 from the second upper groove A321 to the second lower groove A322, the first slider A123 applies a lifting force to the second inclined groove A323, and the lifting force lifts the second hidden table A24.

[0097] In some embodiments of the present invention, as shown in FIG5, one end of the second lower groove A322 connected to the second inclined groove A323 extends a distance toward the fixed table frame A11. When the second slider A124 just moves along the second inclined groove A323 to the second lower groove A322, in order to facilitate the complete lifting of the second hidden table panel A24, the pull-out table panel A22 moves a distance further toward the pull-out table frame A12, leaving some slack. Although the second hidden table panel A24 is completely lifted to the position flush with the pull-out table panel A22, due to the slack, there is still a certain gap between the second hidden table panel A24 and the pull-out table panel A22, as shown in FIG10. Then, the pull-out table frame A12 is pushed in the opposite direction, so that the second slider A124 moves toward the groove extending from the second lower groove A322, so that the pull-out table frame A12 and the second hidden table panel A24 abut against each other, thereby forming a complete tabletop, as shown in FIG11.

[0098] In some embodiments of the present invention, as shown in FIG3, one side of the second slider A124 is slidably disposed on the second guide rail A114, and the other side is provided with a second transmission pin A124a. The second transmission pin A124a is engaged on the second lifting sub-rail A32. When the second slider A124 slides on the second guide rail A114, the second transmission pin A124a moves along the second upper groove A321, the second inclined groove A323, and the second lower groove A322. Furthermore, in this embodiment, the second lifting sub-rail A32 is provided with two sets of the second upper groove A321 and the second inclined groove. A323 and the second lower groove A322, two sets of the second upper groove A321, the second inclined groove A323 and the second lower groove A322 are respectively opened on both sides of the second lifting sub-rail A32. The second slide rail includes two slide rails, which are respectively set on both sides of the second lifting sub-rail A32. Two second sliders A124 are respectively set on the two second slide rails. Two second transmission pins A124a on the two second sliders A124 are simultaneously engaged on the corresponding second upper groove A321, second inclined groove A323 or second lower groove A322 of the second lifting sub-rail A32, making the structure more stable and compact.

[0099] In some embodiments of the present invention, a third guide rail is also provided on the fixed table frame A11, and a third slider is provided on the pull-out table frame A12. When the pull-out table frame A12 is pushed or pulled, the third slider slides on the third guide rail.

[0100] The tabletop structure A2 further includes a third hidden tabletop connected to the fixed table frame A11 and capable of moving up and down in the vertical direction;

[0101] The lifting structure A3 includes a third lifting sub-rail fixed below the third hidden table panel. The third lifting sub-rail is provided with a third upper groove on the upper side and a third lower groove connected to the third upper groove and located on the lower side. The third slider slides in the third guide rail and can move along the third upper groove and the third lower groove. In the retracted state, the first hidden table panel A23 and the second hidden table panel A24 are both retracted below the fixed table panel A21. After the table frame structure A1 is pulled into the second unfolded state, the fixed table frame A11 and the pull-out table frame A12 are further separated, so that the third slider slides along the third guide rail and moves from the third upper groove to the third lower groove. At this time, the pull-out table panel A22 moves out of the position above the third hidden table panel. The third lifting sub-rail rises under the action of the third slider, and at the same time lifts the third hidden table panel and makes it flush with the pull-out table panel A22. The table frame structure A1 is in the third unfolded state. During the switching process of the third slider from the third upper slot to the third lower slot, since the vertical height of the third slider remains unchanged, the relative height of the third lifting sub-rail gradually increases. Moreover, during this switching process, the third slider applies an upward lifting force to the third lifting sub-rail. Under the action of the lifting force, the third lifting sub-rail rises and lifts the third hidden tabletop. At this time, the table frame structure A1 is in the unfolded state. This structure satisfies the requirement that the segmented lifting pull-out table of the present invention can be adjusted according to different usage occasions and needs, so that the table frame structure A1 is in the corresponding storage state, unfolded state, second unfolded state, and third unfolded state by pulling it out. Each of the above states corresponds to a different size of the tabletop, thereby achieving a wider range of usage scenarios and stronger applicability.

[0102] In some embodiments of the present invention, the fixed table frame A11 is provided with two symmetrical third guide rails, and the pull-out table frame A12 is provided with two corresponding third sliders. When the pull-out table frame A12 is pushed or pulled, the two third sliders slide on the corresponding third guide rails, so that the table frame structure A1 switches between the unfolded state and the stored state. The symmetrical arrangement of the two third guide rails and the third sliders makes the table frame structure A1 more stable as a whole, and the switching between the unfolded state and the stored state is also smoother. Furthermore, in this embodiment, one end of each of the two third guide rails is perpendicularly fixed to the fixed beam A111 and close to the fixed side rods A112 on both sides, and the third guide rails are arranged parallel to the fixed side rods A112.

[0103] In some embodiments of the present invention, the fixed side rod A112 is provided with a plurality of third limiting holes, and the bottom of the third hidden table panel is provided with a plurality of third pins that are adapted to the third limiting holes. The third hidden table panel is connected to the fixed table frame A11 by inserting the third pins into the corresponding third limiting holes and can move up and down in the vertical direction.

[0104] In some embodiments of the present invention, the third lifting subrail is further provided with a third inclined groove connecting the third upper groove and the third lower groove. During the switching process from the third upper groove to the third lower groove, the third slider applies a lifting force to the third inclined groove, and the lifting force lifts the second hidden table A24.

[0105] In some embodiments of the present invention, one end of the third lower groove connected to the third inclined groove extends a certain distance toward the fixed table frame A11. When the third slider just moves to the third lower groove along the third inclined groove, in order to facilitate the complete lifting of the third hidden table panel, the pull-out table panel A22 moves a certain distance toward the pull-out table frame A12, leaving some slack. Although the third hidden table panel is completely lifted to the position flush with the pull-out table panel A22, due to the slack, there is still a certain gap between the third hidden table panel and the pull-out table panel A22. Then, the pull-out table frame A12 is pushed in the opposite direction, so that the third slider moves toward the groove extending from the third lower groove, so that the pull-out table frame A12 abuts against the third hidden table panel, thereby forming a complete tabletop.

[0106] In some embodiments of the present invention, one side of the third slider is slidably disposed on the third guide rail, and the other side is provided with a third transmission pin. The third transmission pin is engaged on the third lifting sub-rail. When the third slider slides on the third guide rail, the third transmission pin moves along the third upper groove, the third inclined groove and the third lower groove.

[0107] In some embodiments of the present invention, in order to ensure that the first lifting sub-rail A31 does not interfere with the second hidden table A24 during the lifting process, and that the second lifting sub-rail A32 does not interfere with the first hidden table A23 during the lifting process, the first lifting sub-rail A31 and the second lifting sub-rail A32 are staggered in vertical height.

[0108] In some possible embodiments of the present invention, a fourth guide rail, a fifth guide rail, ..., and corresponding fourth sliders, fifth sliders, ..., fourth lifting sub-rails, fifth lifting sub-rails, ..., fourth hidden tabletops, fifth hidden tabletops, ... may be added or removed according to requirements. Their structures are similar to the structures described above, and will not be repeated here.

[0109] Example 2:

[0110] As shown in Figures 13 to 25, the present invention provides a segmented lifting and pulling table, comprising:

[0111] The table frame assembly B1 includes a fixed table frame B11 and a pull-out table frame B12 slidably connected to the fixed table frame B11. The pull-out table frame B12 is provided with a first pivot pin B121a and a second pivot pin B123b.

[0112] Tabletop assembly B2, which includes a pull-out tabletop B21 disposed on the pull-out table frame B12, a first lifting tabletop B22 and a second lifting tabletop B23 that are lifted and lowered on the fixed table frame B11;

[0113] The lifting structure B3 includes a first lifting rail B31 and a second lifting rail B32. The first lifting rail B31 and the second lifting rail B32 are respectively disposed below the first lifting table B22 and the second lifting table B23 and are respectively connected to the first lifting table B22 and the second lifting table B23. The first lifting rail B31 and the second lifting rail B32 are respectively provided with a first lifting groove B311 and a second lifting groove B321. The first axle pin B121a and the second axle pin B123b are respectively slidably disposed in the first lifting groove B311 and the second lifting groove B321. Pulling out the pull-out table B21 causes the first axle pin B121a and the second axle pin B123b to move along the first lifting groove B311 and the second lifting groove B321, so that the segmented lifting pull-out table switches between a folded state, a first unfolded state and a second unfolded state.

[0114] In the stowed state, the first lifting tabletop B22 and the second lifting tabletop B23 are stored below the pull-out tabletop B21. Pulling the pull-out table frame B12 away from the fixed table frame B11 causes the pull-out tabletop B21 to retract, freeing up the upper space of the first lifting tabletop B22. The first pivot pin B121a, through the relative movement of the first lifting groove B311, simultaneously lifts the first lifting tabletop B22 until it is flush with the pull-out tabletop B21, at which point the system switches to the first unfolded state. Continuing to pull the pull-out table frame B12 away from the fixed table frame B11, the pull-out tabletop B21 retracts, freeing up the upper space of the second lifting tabletop B23. The second pivot pin B123b, through the relative movement of the second lifting groove B321, simultaneously lifts the second lifting tabletop B23 until it is flush with the pull-out tabletop B21, at which point the system switches to the second unfolded state.

[0115] To better illustrate the segmented lifting pull-out table of the present invention, the following specific application will be used as an example: The segmented lifting pull-out table of the present invention, through the cooperation of the table frame assembly B1, the tabletop assembly B2, and the lifting structure B3, achieves flexible switching between a folded state, a first unfolded state, and a second unfolded state. In the folded state, as shown in Figures 19 and 20, the tabletop is compactly folded, significantly saving space and facilitating storage and transportation. In the first and second unfolded states, as shown in Figures 19, 20, 24, and 25, the tabletop area can be gradually expanded according to usage needs, meeting the needs of different scenarios. The pull-out tabletop B21 drives the pivot pin to move along the lifting groove, achieving automatic lifting and leveling of the tabletop. This convenient operation requires no complex installation, enhancing the table's practicality and flexibility. Specifically, when the pull-out tabletop B21 is pulled out, the first pivot pin B121a or the second pivot pin B123b changes position within the first lifting groove B311 or the second lifting groove B321. Since the first pivot pin B121a and the second pivot pin B123b are mounted on the pull-out tabletop B21 and their vertical height remains constant, the first lifting rail B31 or the second lifting rail B32 is lifted or lowered, thereby driving the first... The lifting and lowering of the lifting table B22 and the second lifting table B23; it can be seen that the switching process of each state only requires pulling the pull-out table frame B12 to bring the fixed table frame B11 and the pull-out table frame B12 closer to each other or separate them. The switching steps between the three states are simple and logically consistent, and a single person can easily complete the transformation operation, making it easier to learn and master; it can be seen that the segmented lifting pull-out table of the present invention realizes the switching between the storage state, the first unfolded state and the second unfolded state through simple transformation logic and steps, solving the problems of complex folding logic and unsmooth switching of folding states in the prior art.

[0116] In some possible embodiments of the present invention, as shown in FIG16, the first lifting groove B311 includes a first upper groove B311a, a first lower groove B311b, and a first inclined groove B311c connecting the first upper groove B311a and the first lower groove B311b. The first shaft pin B121a switches between the first upper groove B311a and the first lower groove B311b via the first inclined groove B311c. When the first shaft pin B121a is located in the first upper groove B311a, the first lifting rail B31 is housed below the tabletop assembly B2. When the first shaft pin B121a is located in the first lower groove B311b, the first lifting rail B31 is raised and lifts the first lifting tabletop B22. The second lifting groove B321 includes interconnected sections. The system comprises a second upper groove B321a, a second lower groove B321b, and a second inclined groove B321c connecting the second upper groove B321a and the second lower groove B321b. The second axle pin B123b switches between the second upper groove B321a and the second lower groove B321b via the second inclined groove B321c. When the second axle pin B123b is located in the second upper groove B321a, the second lifting rail B32 is housed below the tabletop assembly B2. When the second axle pin B123b is located in the second lower groove B321b, the second lifting rail B32 is raised, lifting the second lifting tabletop B23. The beneficial effect is that the segmented design of the first lifting groove B311 and the second lifting groove B321 provides precise trajectory guidance for the sliding of the axle pin. When the axle pin moves within the inclined groove, it can convert the horizontal movement of the pull-out table frame B12 into the vertical lifting movement of the lifting rail, making the lifting process of the lifting tabletop smooth and stable. The upper slot corresponds to the folded-out state, and the lower slot corresponds to the unfolded state. The clear division of the positions ensures the structural stability of the table in different states and prevents the lifting table from moving accidentally during use.

[0117] In some possible embodiments of the present invention, as shown in Figures 16 and 23, the end of the first lower groove B311b that communicates with the first inclined groove B311c is provided with a first extension section B311d that communicates with the first lower groove B311b. To avoid interference between the first lifting table B22 and the pull-out table B21 during the lifting process, the pull-out table B21 leaves a certain gap with the first lifting table B22 when it retracts above the first lifting table B22. When the first lifting table B22 is lifted and flush with the pull-out table B21, the pull-out table B21 is pushed in the opposite direction, causing the first pivot pin B121a to slide into the first extension end, aligning the first lifting table B22 with the pull-out table B21. The beneficial effect is that the provision of the first extension section B311d effectively solves the alignment problem between the first lifting table B22 and the pull-out table B21. The gap reserved during the lifting of the tabletop avoids interference between the two; pushing the pull-out table frame B12 in the opposite direction causes the pivot pin to slide into the extension section, which can precisely adjust the position of the tabletop, so that the first lifting tabletop B22 and the pull-out tabletop B21 are perfectly aligned, ensuring the flatness of the tabletop, improving the user experience, and enhancing the overall integrity of the tabletop structure.

[0118] In some possible embodiments of the present invention, as shown in Figures 13, 14 and 15, the tabletop assembly B2 further includes a fixed tabletop B24 disposed on the fixed table frame B11. In the folded state, the pull-out tabletop B21 is aligned with the fixed tabletop B24.

[0119] In some possible embodiments of the present invention, as shown in Figures 13, 14, and 15, the fixed table frame B11 includes two fixed side rails B111 and a fixed beam B112 vertically connecting the ends of the two fixed side rails B111. The pull-out table frame B12 includes two pull-out side rails B121 and a pull-out beam B122 connecting the ends of the two pull-out side rails B121. The pull-out side rails B121 are slidably disposed on the fixed side rails B111. Pulling the pull-out beam B122 causes the two pull-out side rails B121 to slide on the fixed side rails B111. The beneficial effect is that the track-like design of the fixed table frame B11 and the pull-out table frame B12 provides a stable guide for the movement of the pull-out table frame B12, ensuring a smooth and uninterrupted pull-out process. The fixed beam B112 and the pull-out beam B122 respectively enhance the structural strength of the table frame on both sides, making the table frame more stable when bearing the weight of the tabletop, reducing the risk of deformation, and extending the service life of the table.

[0120] In some possible embodiments of the present invention, as shown in Figures 13, 14, and 15, the pull-out table frame B12 further includes a first slide rail connecting rod B123 and a second slide rail connecting rod B124. The ends of the first slide rail connecting rod B123 and the second slide rail connecting rod B124 are respectively vertically fixed to the two pull-out side rails B121. The first lifting rail B31 and the second lifting rail B32 are respectively disposed above the first slide rail connecting rod B123 and the second slide rail connecting rod B124. The beneficial effect is that the first slide rail connecting rod B123 and the second slide rail connecting rod B124 connect the two pull-out side rails B121 into a whole, improving the structural rigidity of the pull-out table frame B12 and preventing the side rails from shifting or deforming during the pull-out process. At the same time, the connecting rods provide a stable mounting base for the lifting rails, ensuring that the lifting rails are subjected to uniform force during movement, further guaranteeing the smooth lifting and lowering of the tabletop and enhancing the overall structural reliability.

[0121] In some possible embodiments of the present invention, as shown in Figures 13, 14, and 15, two first axle pins B121a are included, each disposed inside the pull-out side rail B121; the lifting structure B3 includes two symmetrically arranged first lifting rails B31, and the two first axle pins B121a are slidably disposed within the corresponding first lifting grooves B311 of the first lifting rails B31; the beneficial effect is that the two first axle pins B121a and the symmetrically arranged first lifting rails B31 ensure that the forces on both sides of the first lifting table B22 are balanced, avoiding tilting or jamming caused by unilateral force. The axle pins slide synchronously within the corresponding lifting grooves, ensuring the synchronicity of the lifting process of the table, improving the flatness and stability of the tabletop after unfolding, reducing structural wear, and extending service life.

[0122] In some possible embodiments of the present invention, as shown in Figures 13, 14 and 15, a first protrusion B123a is provided on the first slide rail connecting rod B123, and the second axle pin B123b is disposed on the first protrusion B123a; the beneficial effect is that the first protrusion B123a provides a reasonable installation position for the second axle pin B123b, making the fit between the axle pin and the second lifting rail B32 more precise.

[0123] In some possible embodiments of the present invention, as shown in Figures 13, 14, and 15, the first pivot pin B121a and the second pivot pin B123b are arranged opposite to each other. The beneficial effect is that this arrangement ensures that the lifting rails on both sides of the pull-out table frame B12 are subjected to symmetrical forces during movement, guaranteeing coordinated lifting actions of the first lifting tabletop B22 and the second lifting tabletop B23. This symmetrical design balances the forces on the table frame, reduces structural damage caused by stress concentration on one side, and enhances the overall stability of the table.

[0124] In some possible embodiments of the present invention, as shown in Figures 13, 14, and 15, the first slide rail connecting rod B123 has two first protrusions B123a in the middle, and each of the two first protrusions B123a is provided with a second axle pin B123b; the lifting structure B3 includes two symmetrically arranged second lifting rails B32, and the two second axle pins B123b are respectively slidably disposed in the corresponding second lifting grooves B321 on the second lifting rails B32; the beneficial effect is that the two second axle pins B123b and the symmetrically arranged second lifting rails B32 further improve the stability and synchronization of the lifting process of the second lifting table B23. The cooperation between the double-sided axle pins and the lifting rails makes the second lifting table B23 more stable when unfolding and retracting, avoiding the tilting of the tabletop caused by uneven force on one side, and ensuring the flatness of the tabletop and the safety of use.

[0125] In some possible embodiments of the present invention, as shown in FIG16, the first lifting groove B311 includes two first upper grooves B311a and two first inclined grooves B311c. The two first upper grooves B311a are connected to the first lower groove B311b through the corresponding first inclined grooves B311c. The inner side of the pull-out side rail B121 is also provided with a third shaft pin B121b. The first shaft pin B121a and the third shaft pin B121b are slidably disposed in the first lifting groove B311 and are spaced apart. When the pull-out table frame B12 is pulled out, the first axle pin B121a and the third axle pin B121b simultaneously switch between the first upper groove B311a and the first lower groove B311b via the corresponding first inclined groove B311c. The beneficial effect is that the interconnected design of the two first upper grooves B311a, the two first inclined grooves B311c, and the first lower groove B311b, combined with the spaced arrangement of the first axle pins B121a and the third axle pin B121b, ensures that the first lifting rail B31 receives multi-point support during movement, resulting in more even force distribution. The synchronous sliding of the axle pins along the inclined grooves enhances the stability of the lifting rail movement, reduces swaying, and makes the lifting and retraction of the first lifting tabletop B22 smoother, thus improving the durability of the structure.

[0126] In some possible embodiments of the present invention, as shown in FIG17, a second protrusion B124a is provided in the middle of the second slide rail connecting rod B124, a fourth axle pin B124b is provided on the second protrusion B124a, and a third lifting groove B322 is provided on the second lifting rail B32. The fourth axle pin B124b is slidably disposed in the third lifting groove B322. When the pull-out table frame B12 is pulled out, the second axle pin B123b and the fourth axle pin B124b synchronously drive the second lifting rail B32 to move up and down, thereby improving the stability of the lifting. Its beneficial effect is that the cooperation between the fourth axle pin B124b and the third lifting groove B322, together with the second axle pin B123b, forms a double support for the second lifting rail B32, so that the second lifting rail B32 is subjected to balanced force during the lifting process, avoiding deviation or jamming caused by unilateral force. The dual-guide system enhances the stability and precision of the second lifting tabletop B23's movement, ensuring it can be smoothly lifted and aligned with other tabletops, thus improving the structural reliability of the table when it is unfolded.

[0127] In some possible embodiments of the present invention, as shown in Figures 16 and 17, the second lifting groove B321 and the third lifting groove B322 are respectively disposed on both sides of the second lifting rail B32. The second axle pin B123b and the fourth axle pin B124b are respectively engaged in the second lifting groove B321 and the third lifting groove B322 from both sides, which can better limit the second lifting rail B32 and improve the stability of the mechanism's movement. The beneficial effect is that the second lifting groove B321 and the third lifting groove B322 are disposed on both sides, allowing the second axle pin B123b and the fourth axle pin B124b to limit the second lifting rail B32 from both sides, effectively restricting the horizontal swaying of the lifting rail. This double-sided limiting design significantly improves the stability of the mechanism's movement, ensuring that the second lifting table B23 maintains precise positioning during lifting and use, reducing structural wear, and extending its service life.

[0128] In some possible embodiments of the present invention, as shown in Figures 13, 14, and 15, the end of the second lower groove B321b that communicates with the second inclined groove B321c is provided with a second extension section B321d that communicates with the second lower groove B321b; because in order to avoid interference between the second lifting table B23 and the pull-out table B21 during the lifting process, when the pull-out table B21 retracts to make way for the upper space of the second lifting table B23, a certain gap is left between the pull-out table B21 and the second lifting table B23, and when the first lifting table B22 is lifted and the pull-out table... When plate B21 is flush, push the pull-out table B21 in the opposite direction to make the first pivot pin B121a slide into the first extension end, aligning the first lifting table B22 with the pull-out table B21; similarly, the third lifting groove B322 includes a third upper groove B322a, a third lower groove B322b, and a third inclined groove B322c connecting the third upper groove B322a and the third lower groove B322b. The end of the third lower groove B322b that communicates with the third inclined groove B322c is provided with a third extension section B322d that communicates with the third lower groove B322b.

[0129] In some possible embodiments of the present invention, the segmented lifting and pulling table further includes several stop rods with one end rotatably mounted on the first lifting rail B31 and the second lifting rail B32. By rotating the stop rods, the first axle pin B121a or the second axle pin B123b can be limited or released, preventing the first axle pin B121a or the second axle pin B123b from sliding and causing a state switch under collision or vibration. The beneficial effect is that the stop rods can limit or release the axle pins by rotation, effectively preventing the axle pins from accidentally sliding due to collisions, vibrations, or other external forces when the table is in a certain state, avoiding unexpected changes in the table's state, and improving safety and stability during use. The stop rods are simple to operate and provide reliable protection for locking the table's state.

[0130] In some possible embodiments of the present invention, as shown in Figures 13, 14, and 15, the segmented lifting and pulling table further includes a table leg assembly, which comprises four table legs B4 disposed at the four corners of the table frame assembly B1. The advantage of this is that the four table legs B4, disposed at the four corners of the table frame assembly B1, form a stable support structure, evenly distributing the weight borne by the tabletop and preventing the table from tilting or wobbling during use. The table leg assembly provides a stable foundation for the entire table, ensuring good stability in different unfolded states, thus improving safety and reliability.

[0131] In some possible embodiments of the present invention, as shown in Figures 13, 14 and 15, the first lifting table B22 is provided with a plurality of first positioning pins B221 on both sides of its bottom, and the second lifting table B23 is provided with a second positioning pin B231 on its bottom. The fixed side rail B111 is provided with a plurality of positioning holes B111a that are adapted to the first positioning pins B221 and the second positioning pins B231. The first lifting table B22 achieves horizontal limitation and vertical movement by inserting the first positioning pins B221 into the positioning holes B111a, and the second lifting table B23 achieves horizontal limitation and vertical movement by inserting the second positioning pins B231 into the positioning holes B111a.

[0132] In summary, the segmented height-adjustable pull-out table of this invention, through its innovative structural design, achieves flexible switching of the desktop between different states. It offers numerous advantages, including automatic height adjustment, smooth and stable operation, aesthetic appeal, and multi-functionality, significantly enhancing the user experience and product practicality. Therefore, this invention effectively overcomes the various shortcomings of existing technologies and possesses high industrial applicability.

[0133] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in the present invention should still be covered by the claims of the present invention.

Claims

1. A sectional lift-and-pull table, characterized in that, The application relates to a segmented lifting and pulling table, which comprises a table frame structure (A1), a table plate structure (A2) and a lifting structure (A3). The table frame structure (A1) comprises a fixed table frame (A11) and a pulling table frame (A12) which are connected through sliding, the fixed table frame (A11) is provided with a first guide rail (A113) and a second guide rail (A114), the pulling table frame (A12) is provided with a first sliding block (A123) and a second sliding block (A124), the pulling table frame (A12) is pulled, the first sliding block (A123) slides on the first guide rail (A113), and the second sliding block (A124) slides on the second guide rail (A114). The table plate structure (A2) comprises a pulling table plate (A22) connected with the pulling table frame (A12), a fixed table plate (A21) connected with the fixed table frame (A11), a first hidden table plate (A23) and a second hidden table plate (A24), the first hidden table plate (A23) and the second hidden table plate (A24) can move up and down relative to the fixed table plate (A21). The lifting structure (A3) comprises a first lifting sub-track (A31) fixed below the first hidden table plate (A23) and a second lifting sub-track (A32) fixed below the second hidden table plate (A24), the first lifting sub-track (A31) is provided with an upper first groove (A311) and a lower first groove (A312) connected with the upper first groove (A311) and located at the lower side, the first sliding block (A123) moves along the first upper groove (A311) and the first lower groove (A312) while sliding in the first guide rail (A113), the second lifting sub-track (A32) is provided with an upper second groove (A321) and a lower second groove (A322) connected with the upper second groove (A321) and located at the lower side, and the second sliding block (A124) moves along the second upper groove (A321) and the second lower groove (A322) while sliding in the second guide rail (A114). The segmented lifting and pulling table is switched among the storage state, the first expansion state and the second expansion state by pulling and pushing the pulling table frame (A12). In the storage state, the first hidden table plate (A23) and the second hidden table plate (A24) are stored below the fixed table plate (A21), the first sliding block (A123) is located in the first upper groove (A311), and the second sliding block (A124) is located in the second upper groove (A321). In the first expansion state, the table frame structure (A1) is pulled, the first sliding block (A123) slides along the first guide rail (A113) and moves to the first lower groove (A312) at the same time, the pulling table plate (A22) moves out of the position above the first hidden table plate (A23), the first lifting sub-track (A31) is lifted under the action of the first sliding block (A123), the first hidden table plate (A23) is lifted and leveled with the pulling table plate (A22). In the second unfolding state, the table frame structure (A1) is continuously pulled, the fixed table frame (A11) is separated from the pull-out table frame (A12), the second slider (A124) slides along the second guide rail (A114), and simultaneously moves into the second lower groove (A322), at this time, the pull-out table board (A22) moves out of the upper position of the second hidden table board (A24), the second lifting auxiliary rail (A32) is lifted under the action of the second slider (A124), simultaneously lifts the second hidden table board (A24) and makes it flush with the pull-out table board (A22).

2. The sectional lift-and-pull table according to claim 1, wherein: The second guide rail (A114) is two groups of oppositely arranged guide rails, the second slider (A124) is two groups of sliders arranged in the unfolding direction, and the two groups of second sliders (A124) are slidably installed on the two groups of second guide rails (A114).

3. The sectional lift-table according to claim 1, characterized in that: The second guide rail (A114) is two groups of oppositely arranged guide rails, the second slider (A124) is two groups of sliders arranged in the unfolding direction, and the two groups of second sliders (A124) are slidably installed on the two groups of second guide rails (A114).

4. The sectional lift-table according to claim 1, characterized in that: The fixed table frame (A11) is further provided with a third guide rail, and the pull-out table frame (A12) is provided with a third slider, the pull-out table frame (A12) is pushed and pulled, and the third slider slides on the third guide rail. The table board structure (A2) further comprises a third hidden table board connected with the fixed table frame (A11) and capable of moving up and down in the vertical direction. The lifting structure (A3) further comprises a third lifting auxiliary rail fixed below the third hidden table board, the third lifting auxiliary rail is provided with a third upper groove on the upper side and a third lower groove connected with the third upper groove and located on the lower side, and the third slider slides in the third guide rail and can move along the third upper groove and the third lower groove; in the storage state, the first hidden table board (A23) and the second hidden table board (A24) are stored below the fixed table board (A21); after the table frame structure (A1) is pulled to the second unfolding state, the fixed table frame (A11) is continuously separated from the pull-out table frame (A12), the third slider slides along the third guide rail, and simultaneously moves from the third upper groove into the third lower groove, at this time, the pull-out table board (A22) moves out of the upper position of the third hidden table board, the third lifting auxiliary rail is lifted under the action of the third slider, simultaneously lifts the third hidden table board and makes it flush with the pull-out table board (A22), and the table frame structure (A1) is in the third unfolding state.

5. The sectional lift-table according to claim 1, characterized in that: The fixed table frame (A11) is provided with two symmetrical first guide rails (A113), the pull-out table frame (A12) is correspondingly provided with two first sliders (A123), the pull-out table frame (A12) is pushed and pulled, the two first sliders (A123) slide on the corresponding first guide rails (A13), so that the table frame structure (A1) is switched between the unfolding state and the storage state.

6. The sectional lift-table according to claim 1, characterized in that: The fixed table frame (A11) is a frame structure composed of a fixed beam (A111) and two fixed side rods (A112) perpendicular to both ends of the fixed beam (A111), and the corresponding pull-out table frame (A12) is a frame structure composed of a pull-out beam (A121) and two pull-out side rods (A122) perpendicular to both ends of the pull-out beam (A121).

7. The sectional lift-table according to claim 1, characterized in that: The fixed side rod (A112) includes a cavity accommodating the pull-out side rod (A122), and the pull-out side rod (A122) is inserted into the cavity from one end of the fixed side rod (A112) and can reciprocate along the axial direction of the fixed side rod (A112), assisting the table frame structure (A1) to switch between the unfolded state and the storage state.

8. The sectional lift-table according to claim 1, characterized in that: A plurality of first limiting holes (A112a) are formed in the fixed side rod (A112), and a plurality of first pins (A231) matched with the first limiting holes (A112a) are arranged at the bottom of the first hidden table plate (A23), and the first hidden table plate (A23) is connected with the fixed table frame (A11) by inserting the first pins (A231) into the corresponding first limiting holes (A112a) and can move up and down in the vertical direction.

9. The sectional lift-table according to claim 1, characterized in that: The first lifting sub-track (A31) is further provided with a first inclined groove (A313) connecting the first upper groove (A311) and the first lower groove (A312), and the first lifting force applied by the first slider (A123) to the first inclined groove (A313) during the switching process from the first upper groove (A311) to the first lower groove (A312) lifts the first hidden table plate (A23).

10. The sectional lift-table according to claim 1, characterized in that: One side of the first slider (A123) is slidably arranged on the first guide rail (A113), and the other side is provided with a first transmission pin (A123a) which is clamped on the first lifting sub-track (A31), and when the first slider (A123) slides on the first guide rail (A113), the first transmission pin (A123a) moves along the first upper groove (A311) and the first lower groove (A312).

11. A sectional lift-and-pull table characterized by, It comprises: A table frame assembly (B1) comprising a fixed table frame (B11) and a pull-out table frame (B12) slidably connected with the fixed table frame (B11), the pull-out table frame (B12) being provided with a first shaft pin (B121a) and a second shaft pin (B123b); A table plate assembly (B2) comprising a pull-out table plate (B21) arranged on the pull-out table frame (B12), a first lifting table plate (B22) and a second lifting table plate (B23) arranged on the fixed table frame (B11); The lifting structure (B3) comprises a first lifting rail (B31) and a second lifting rail (B32), which are arranged below and connected with the first lifting table plate (B22) and the second lifting table plate (B23) respectively. The first lifting rail (B31) and the second lifting rail (B32) are respectively provided with a first lifting groove (B311) and a second lifting groove (B321). The first shaft pin (B121a) and the second shaft pin (B123b) are respectively arranged in the first lifting groove (B311) and the second lifting groove (B321). Pulling the pull-out table plate (B21) drives the first shaft pin (B121a) and the second shaft pin (B123b) to move along the first lifting groove (B311) and the second lifting groove (B321), so that the segmented lifting pull-out table is switched between the storage state, the first unfolded state and the second unfolded state. In the storage state, the first lifting table plate (B22) and the second lifting table plate (B23) are stored below the pull-out table plate (B21). Pulling the pull-out table frame (B12) away from the fixed table frame (B11) makes the pull-out table plate (B21) retreat from the upper space of the first lifting table plate (B22). The first shaft pin (B121a) drives the first lifting table plate (B22) to rise synchronously through the relative movement of the first lifting groove (B311) and is flush with the pull-out table plate (B21), and at this time, the first unfolded state is switched to. Continue to pull the pull-out table frame (B12) away from the fixed table frame (B11), and the pull-out table plate (B21) retreats from the upper space of the second lifting table plate (B23). The second shaft pin (B123b) drives the second lifting table plate (B23) to rise synchronously through the relative movement of the second lifting groove (B321) and is flush with the pull-out table plate (B21), and at this time, the second unfolded state is switched to.

12. The sectional lift-table according to claim 11, characterized in that: The first lifting groove (B311) comprises a first upper groove (B311a), a first lower groove (B311b), and a first inclined groove (B311c) connecting the first upper groove (B311a) and the first lower groove (B311b), the first shaft pin (B121a) switches between the first upper groove (B311a) and the first lower groove (B311b) through the first inclined groove (B311c), when the first shaft pin (B121a) is located in the first upper groove (B311a), the first lifting rail (B31) is accommodated below the table board assembly (B2), when the first shaft pin (B121a) is located in the first lower groove (B311b), the first lifting rail (B31) is lifted and the first lifting table board (B22) is lifted.

13. The sectional lift-table according to claim 11, characterized in that: The fixed table frame (B11) comprises two fixed side rails (B111) and a fixed beam (B112) vertically connecting the ends of the two fixed side rails (B111), the pull-out table frame (B12) comprises two pull-out side rails (B121) and a pull-out beam (B122) connecting the ends of the two pull-out side rails (B121), the pull-out side rails (B121) are slidingly arranged on the fixed side rails (B111), and pulling the pull-out beam (B122) drives the two pull-out side rails (B121) to slide on the fixed side rails (B111).

14. The sectional lift-table according to claim 13, characterized in that: The pull-out table frame (B12) further comprises a first slide rail connecting rod (B123) and a second slide rail connecting rod (B124), the ends of the first slide rail connecting rod (B123) and the second slide rail connecting rod (B124) are respectively fixedly connected with the two pull-out side rails (B121), and the first lifting rail (B31) and the second lifting rail (B32) are respectively arranged above the first slide rail connecting rod (B123) and the second slide rail connecting rod (B124).

15. The sectional lift-table according to claim 14, characterized in that: The first shaft pin (B121a) comprises two, which are respectively arranged inside the pull-out side rail (B121); the lifting structure (B3) comprises two first lifting rails (B31) arranged symmetrically, and the two first shaft pins (B121a) are respectively slidingly arranged in the corresponding first lifting groove (B311) of the first lifting rail (B31).

16. The sectional lift-table according to claim 15, characterized in that: The first sliding rail connecting rod (B123) is provided with a first protrusion (B123a), and the second shaft pin (B123b) is arranged on the first protrusion (B123a).

17. The sectional lift-table according to claim 16, characterized in that: The first lifting groove (B311) comprises two first upper grooves (B311a) and two first inclined grooves (B311c), the two first upper grooves (B311a) are communicated with the first lower groove (B311b) through the corresponding first inclined grooves (B311c) respectively; the inner side of the pull-out side rail (B121) is further provided with a third shaft pin (B121b), the first shaft pin (B121a) and the third shaft pin (B121b) are slidingly arranged in the first lifting groove (B311) and are spaced apart, when the pull-out table frame (B12) is pulled out, the first shaft pin (B121a) and the third shaft pin (B121b) are switched in the first upper groove (B311a) and the first lower groove (B311b) through the corresponding first inclined grooves (B311c) synchronously.

18. The sectional lift-table according to claim 14, characterized in that: The middle part of the second sliding rail connecting rod (B124) is provided with a second protrusion (B124a), the second protrusion (B124a) is provided with a fourth shaft pin (B124b), the second lifting rail (B32) is provided with a third lifting groove (B322), the fourth shaft pin (B124b) is slidingly arranged in the third lifting groove (B322), when the pull-out table frame (B12) is pulled out, the second shaft pin (B123b) and the fourth shaft pin (B124b) synchronously drive the second lifting rail (B32) to rise and fall.

19. The sectional lift-table according to claim 11, characterized in that: The second lifting groove (B321) and the third lifting groove (B322) are arranged on the two sides of the second lifting rail (B32) respectively, and the second shaft pin (B123b) and the fourth shaft pin (B124b) are respectively clamped into the second lifting groove (B321) and the third lifting groove (B322) from the two sides.

20. The sectional lift-table according to claim 11, characterized in that: The segmented lifting and pulling-out table further comprises a plurality of stop rotating rods which are rotatably arranged at one end on the first lifting rail (B31) and the second lifting rail (B32), by rotating the stop rotating rod, the first shaft pin (B121a) or the second shaft pin (B123b) is limited or released.

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