Sectional pull-out extension table

Abstract

This invention provides a segmented pull-out extendable table, solving the problems of complex state switching steps and discontinuous operation in existing segmented pull-out tables. It includes: a fixed frame and a movable frame, with a main rail and a secondary rail respectively mounted on the fixed frame and the movable frame. The secondary rail is slidably mounted on the main rail, and the main rail is equipped with a positioning element. The secondary rail is equipped with a first limiting pin and a second limiting pin. A fixed tabletop, a first movable tabletop, and a second movable tabletop are also included. The fixed tabletop is mounted on the main rail, and the first and second movable tabletops are arranged side-by-side on the secondary rail. A first lifting slider and a second lifting slider are also included. Pushing or pulling the movable frame, via the first and second lifting sliders, causes the segmented pull-out extendable table to switch between a folded state, a first extended state, and a second extended state.

Description

Technical Field

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

[0002] In today's rapidly changing and diverse society, people's needs for furniture are constantly evolving. Tables, as an indispensable part of both home and work, are becoming increasingly diverse and specialized in terms of type and design. The market offers a wide variety of tables, meticulously categorized according to different usage scenarios to meet the needs of various occasions and activities. For example, we have desks designed specifically for office environments, dining tables for family meals, school desks for school environments, computer desks designed for personal computer use, and study desks that provide a comfortable space for studying and reading. Each table, with its unique design, provides optimal support and convenience for a specific activity.

[0003] Beyond functional segmentation, the structural design of tables is also constantly being innovated and optimized. The emergence of height-adjustable desks allows users to easily adjust the desk height according to their height and work habits, achieving a healthier and more comfortable working posture. Folding desks, with their advantages of easy storage and space saving, have become an ideal choice for small living spaces. Extendable desks, with their flexible expansion and storage functions, adapt to various usage scenarios and are increasingly favored by home users.

[0004] As a type of extendable table, segmented pull-out tables achieve various tabletop transformations through a simple pull-out action, providing users with more usable space and convenience. However, existing segmented pull-out tables often employ complex structural designs to achieve these transformations, requiring multiple steps to unfold or fold the tabletop. The complex transformation logic not only increases the difficulty of operation for users but also often necessitates assistance from others. To address these issues, the market urgently needs a new type of segmented pull-out extendable table that features a simple structure, convenient operation, and seamless state transitions under a unified transformation logic, meeting users' dual needs for convenience and practicality. 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 pull-out extension table, which solves the problem that the state switching steps of the segmented pull-out table in the prior art are complicated and the operation is not continuous.

[0006] To address the aforementioned technical problems, the present invention provides a segmented pull-out extension table, comprising:

[0007] A fixed frame and a movable frame are provided, wherein a main rail and a secondary rail are respectively provided on the fixed frame and the movable frame, the secondary rail is slidably disposed on the main rail, and a positioning element is provided on the main rail, and a first limiting pin and a second limiting pin are provided on the secondary rail;

[0008] The system includes a fixed tabletop, a first movable tabletop, and a second movable tabletop. The fixed tabletop is mounted on the main rail, and the first and second movable tabletops are mounted side-by-side on the secondary rail.

[0009] A first lifting slider and a second lifting slider are provided. The first lifting slider is fixed to the bottom of the first movable table and slidably disposed on the sub-rail. The second lifting slider is fixed to the bottom of the second movable table and slidably disposed on the sub-rail. The first lifting slider is provided with a first sliding groove and a first positioning pin that cooperates with the positioning component. The first limiting pin is movably disposed on the first sliding groove. The second lifting slider is provided with a second sliding groove and a second positioning pin that cooperates with the positioning component. The second limiting pin is movably disposed on the second sliding groove. The first sliding groove includes a first horizontal groove and a first upward inclined groove connected to the first horizontal groove. The second sliding groove includes a second horizontal groove and a second upward inclined groove connected to the second horizontal groove. Pushing and pulling the movable frame causes the segmented pull-out extension table to switch between a folded state, a first unfolded state, and a second unfolded state.

[0010] In the folded state, the first limiting pin and the second limiting pin are respectively located in the first upper inclined groove and the second upper inclined groove, and the first movable table and the second movable table are respectively disposed under the fixed table; in the first unfolded state, the first limiting pin moves to the first horizontal groove, and the first movable table is pulled out from under the fixed table and lifted by the first lifting slider to a position flush with the fixed table; in the second unfolded state, the second limiting pin moves to the second horizontal groove, and the second movable table is pulled out from under the fixed table and lifted by the second lifting slider to a position flush with the first movable table and the fixed table.

[0011] As a more preferred embodiment, the positioning element includes a connecting portion and a positioning portion, wherein the positioning element is connected to the main rail via the connecting portion passing through the sub-rail.

[0012] As a more preferred embodiment, the positioning part is provided with a lifting groove, and the side wall of the lifting groove is provided with a positioning port and a release port corresponding to the first positioning pin and the second positioning pin. When the first lifting slider slides on the sub-rail, it enters the lifting groove through the positioning port. The lifting hole limits the first positioning pin while satisfying the lifting action of the first lifting slider. When the first positioning pin moves into the first downward inclined groove, the first positioning pin is lifted and slides out of the positioning member from the release port. The movable frame is continued to be pulled, so that the positioning member limits the second positioning pin.

[0013] As a more preferred embodiment, the lifting groove has an opening on the upper part of the side wall opposite to the positioning port, and a movable baffle is rotatably provided on the opening to form a one-way passage structure; when the first positioning pin and the second positioning pin are inside the lifting groove, the movable baffle closes the opening, allowing the first positioning pin and the second positioning pin to rise or fall along the lifting groove; when the first positioning pin and the second positioning pin are outside the lifting groove, the first positioning pin and the second positioning pin can push the movable baffle to rotate at a set height, entering the lifting groove from the opening.

[0014] As a more preferred method, the second upper inclined groove is connected to the middle of the second horizontal groove. When the second limiting pin moves along the second upper inclined groove to the second horizontal groove, it first moves away from the fixed frame in the second horizontal groove so that the second movable table is pulled out from under the fixed table and moves away from the fixed table for a certain distance before it starts to lift, so as to avoid interference with the fixed table during the lifting process. After the second movable table has finished lifting, the movable frame is pushed in the opposite direction to make the second limiting pin move towards the fixed frame in the second horizontal groove, so that the second movable table is aligned and spliced ​​with the fixed table.

[0015] As a more preferred method, the first upward inclined groove is connected to the middle of the first horizontal groove. When the first limiting pin moves along the first upward inclined groove to the first horizontal groove, it first moves away from the fixed frame in the first horizontal groove so that the first movable table is pulled out from under the fixed table and moves away from the fixed table for a certain distance before it starts to be lifted, so as to avoid interference with the fixed table during the lifting process. After the first movable table is lifted, the movable frame is pushed in the opposite direction to make the first limiting pin move towards the fixed frame in the first horizontal groove, so that the first movable table is aligned and spliced ​​with the fixed table.

[0016] As a more preferred embodiment, the first sliding groove further includes a first downward inclined groove connected to the end of the first horizontal groove away from the fixed frame. In the first unfolded state, the first positioning pin is limited by the positioning member, pulling the movable frame away from the fixed frame. The movable frame drives the sub-rail to move and simultaneously causes the sub-rail to slide relative to the first lifting slider. The first limiting pin on the sub-rail moves along the first horizontal groove toward the first downward inclined groove and simultaneously continues to lift the first lifting slider, causing the first positioning pin to rise and slide out of the positioning member from the release port. The first positioning pin is released, thereby allowing the first lifting slider to continue to follow the sub-rail.

[0017] As a more preferred embodiment, the fixed frame is provided with two main rails, which are respectively located at both ends of the fixed frame; the movable frame is provided with two auxiliary rails, which are respectively located at both ends of the movable frame, and the auxiliary rails are respectively slidably mounted on the corresponding main rails; the fixed table and the movable table are respectively mounted on the two main rails and the auxiliary rails.

[0018] As a more preferred embodiment, the main rail is provided with a main slide groove, and a main pulley is provided in the main slide groove; the secondary rail is provided with a secondary slide groove, and a secondary pulley is provided in the secondary slide groove; the main pulley is connected to the secondary rail, and the secondary pulley is connected to the main rail; the main pulley is realized by the sliding of the main pulley and the secondary pulley in the main slide groove and the secondary slide groove, respectively.

[0019] As a more preferred method, the segmented pull-out extension table also includes several stop blocks. One end of each stop block is rotatably mounted on the first lifting slider and the second lifting slider. By rotating the stop block, the stop block is positioned on the first sliding groove or the second sliding groove, thereby limiting the movement of the first or second limiting pin within the groove.

[0020] As described above, the segmented pull-out extension table of the present invention has the following beneficial effects: When the segmented pull-out extension table of the present invention is in use, in its folded state, the first movable table panel and the second movable table panel are disposed below the fixed table panel. Pulling the movable frame away from the fixed frame causes the sub-rail to slide on the main rail, and the first movable table panel is pulled out from the bottom of the fixed table panel. At this time, the first positioning pin on the first lifting slider is limited by the positioning member. Continuing to pull the movable frame backward, since the first lifting slider is limited, the movable frame slides relative to the first lifting slider. The first limiting pin moves along the first upper inclined groove toward the first horizontal groove. When it moves to the first horizontal groove, the first lifting slider drives the first movable table panel to rise and become flush with the fixed table panel. At this time, the segmented pull-out extension table switches to the first unfolded state.

[0021] Next, continue pulling the movable frame, and the second movable table is pulled out from under the fixed table. At this time, the second positioning pin on the second lifting slider is limited by the positioning component. Continue to pull the movable frame backward. Since the second lifting slider is limited, the movable frame slides relative to the second lifting slider. The second limiting pin moves along the second upper inclined groove toward the second horizontal groove. When it moves to the second horizontal groove, the second lifting slider drives the second movable table to rise and become flush with the fixed table. At this time, the segmented pull-out extension table switches to the second unfolded state.

[0022] Next, the movable frame is pushed in the opposite direction, causing the second limiting pin to move along the second horizontal groove toward the second upward inclined groove. During this process, the second movable table falls under the action of gravity, causing the second limiting pin to rise in the second upward inclined groove. When the second limiting pin rises to the top of the second upward inclined groove, the second lifting slider drives the second movable table to fall to a position horizontal with the lower part of the fixed table. The movable frame is then pushed to push the second movable table into the lower part of the fixed table, completing the switch from the second unfolded state to the first unfolded state.

[0023] Then, the movable frame is pushed in the opposite direction, causing the first limiting pin to move along the first horizontal groove toward the first upward inclined groove. During this process, the first movable table falls under the action of gravity, causing the first limiting pin to rise in the first upward inclined groove. When the first limiting pin rises to the top of the first upward inclined groove, the first lifting slider drives the first movable table to fall to a position horizontal with the lower part of the fixed table. The movable frame is then pushed to push the first movable table into the lower part of the fixed table, completing the switch from the first unfolded state to the folded state.

[0024] As can be seen, the switching between the folded state, the first unfolded state, and the second unfolded state can be achieved simply by pulling out the movable frame. While pulling out the movable frame, the relative movement of the first lifting slider, the second lifting slider, and the sub-rail is used to lift the first movable table and the second movable table, thereby realizing the storage and splicing of the first movable table and the second movable table. The operation is simple and convenient, and it is suitable for one person to operate.

[0025] In summary, the segmented pull-out extension table of the present invention achieves switching between different states of various sizes simply by pulling out the movable frame, in conjunction with the relative movement of the first lifting slider, the second lifting slider, and the sub-rail. It has a simple structure and is easy to operate, solving the problems of cumbersome transformation operation and reliance on multiple people for the various extension forms of pull-out extension tables in the prior art. Attached Figure Description

[0026] Figure 1The diagram shown is an exploded view of the segmented pull-out extension table of the present invention in its folded state.

[0027] Figure 2 Displayed as Figure 1 A magnified view of a portion of region A;

[0028] Figure 3 The diagram shows the assembly of the main rail and the secondary rail of the segmented pull-out extension table of the present invention.

[0029] Figure 4 The diagram shows the structural schematic of the positioning component of the segmented pull-out extension table of the present invention;

[0030] Figure 5 The diagram shows the segmented pull-out extension table of the present invention in its folded state;

[0031] Figure 6 The diagram shown is a schematic diagram of the first unfolded state of the segmented pull-out extension table of the present invention;

[0032] Figure 7 Displayed as Figure 6 A magnified view of a portion of region B in the middle;

[0033] Figure 8 The diagram shows the second unfolded state of the segmented pull-out extension table of the present invention;

[0034] Figure 9 Displayed as Figure 8 A magnified view of a portion of region C in the middle.

[0035] Component designation explanation

[0036] 1. Fixture

[0037] 11 Main Track

[0038] 111 Main Slide

[0039] 112 Main pulley

[0040] 12 positioning components

[0041] 121 Connecting part

[0042] 122 Positioning Department

[0043] 122a Lifting Trough

[0044] 122b positioning port

[0045] 122c Release Port

[0046] 122d opening

[0047] 122e movable baffle

[0048] 2. Movable rack

[0049] 21 Suborbital

[0050] 211 Sub-slide groove

[0051] 212 Secondary pulley

[0052] 213 First limit pin

[0053] 214 Second limit pin

[0054] 3. Fixed tabletop

[0055] 31 Receiving slot

[0056] 4 First movable table

[0057] 5 Second movable table

[0058] 6 First Lifting Slider

[0059] 61 First locating pin

[0060] 62 First sliding groove

[0061] 621 First Horizontal Channel

[0062] 622 First Upper Inclined Groove

[0063] 623 First Lower Inclined Groove

[0064] 7 Second Lifting Slider

[0065] 71 Second locating pin

[0066] 72 Second sliding groove

[0067] 721 Second Horizontal Channel

[0068] 722 Second Upper Inclined Groove

[0069] 8 Stop blocks

[0070] 9 legs

[0071] 10 rollers Detailed Implementation

[0072] 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.

[0073] 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.

[0074] 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.

[0075] 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.

[0076] like Figures 1 to 9 As shown, the present invention provides a segmented pull-out extension table, comprising:

[0077] The fixed frame 1 and the movable frame 2 are respectively provided with a main rail 11 and a secondary rail 21. The secondary rail 21 is slidably disposed on the main rail 11, and the main rail 11 is provided with a positioning element 12. The secondary rail 21 is provided with a first limiting pin 213 and a second limiting pin 214.

[0078] The fixed table 3, the first movable table 4, and the second movable table 5 are provided. The fixed table 3 is disposed on the main rail 11 and has a receiving groove 31 between it and the main rail 11 that is adapted to the first movable table 4 and the second movable table 5. The first movable table 4 and the second movable table 5 are disposed side by side on the auxiliary rail 21.

[0079] A first lifting slider 6 and a second lifting slider 7 are provided. The first lifting slider 6 is fixed to the bottom of the first movable table 4 and slidably disposed on the sub-rail 21. The second lifting slider 7 is fixed to the bottom of the second movable table 5 and slidably disposed on the sub-rail 21. The first lifting slider 6 is provided with a first sliding groove 62 and a first positioning pin 61 that cooperates with the positioning member 12. The first limiting pin 213 is movably disposed on the first sliding groove 62. The second lifting slider 7 is provided with a second sliding groove 72 and a second positioning pin 71 that cooperates with the positioning member 12. The second limiting pin 214 is movably disposed on the second sliding groove 72. The first sliding groove 62 includes a first horizontal groove 621 and a first upper inclined groove 622 that communicates with the first horizontal groove 621. The second sliding groove 72 includes a second horizontal groove 721 and a second upper inclined groove 722 that communicates with the second horizontal groove 721. Pushing and pulling the movable frame 2 causes the segmented pull-out extension table to switch between a folded state, a first unfolded state, and a second unfolded state.

[0080] In the folded state, the first limiting pin 213 and the second limiting pin 214 are respectively located in the first upper inclined groove 622 and the second upper inclined groove 722, and the first movable table 4 and the second movable table 5 are respectively disposed in the receiving groove 31. In the first unfolded state, the first limiting pin 213 moves to the first horizontal groove 621, and the first movable table 4 is pulled out from the receiving groove 31 and lifted by the first lifting slider 6 to a position flush with the fixed table 3. In the second unfolded state, the second limiting pin 214 moves to the second horizontal groove 721, and the second movable table 5 is pulled out from the receiving groove 31 and lifted by the second lifting slider 7 to a position flush with the first movable table 4 and the fixed table 3.

[0081] To better illustrate the segmented pull-out extendable table of the present invention, the following specific application will be used as an example: When in use, the segmented pull-out extendable table of the present invention, in its folded state, is as follows: Figure 1as well as Figure 5 As shown, the movable table is disposed in the receiving groove 31. Pulling the movable frame 2 away from the fixed frame 1 causes the secondary rail 21 to slide on the main rail 11, and the first movable table 4 is pulled out from the receiving groove 31. At this time, the first positioning pin 61 on the first lifting slider 6 is limited by the positioning member 12. Continuing to pull the movable frame 2 backward, since the first lifting slider 6 is limited, the movable frame 2 slides relative to the first lifting slider 6. The first limiting pin 213 moves along the first upper inclined groove 622 toward the first horizontal groove 621. When it moves to the first horizontal groove 621, the first lifting slider 6 drives the first movable table 4 to rise and become flush with the fixed table 3. At this time, the segmented pull-out extension table switches to the first unfolded state, as shown. Figure 6 as well as Figure 7 As shown; then continue pulling the movable frame 2, the second movable table 5 is pulled out from the receiving groove 31. At this time, the second positioning pin 71 on the second lifting slider 7 is limited by the positioning member 12. Continue to pull the movable frame 2 backward. Since the second lifting slider 7 is limited, the movable frame 2 and the second lifting slider 7 slide relative to each other. The second limiting pin 214 moves along the second upper inclined groove 722 toward the second horizontal groove 721. When it moves to the second horizontal groove 721, the second lifting slider 7 drives the second movable table 5 to rise and become flush with the fixed table 3. At this time, the segmented pull-out extension table switches to the second unfolded state, as shown. Figure 8 as well as Figure 9As shown; then, the movable frame 2 is pushed in the reverse direction, causing the second limiting pin 214 to move along the second horizontal groove 721 toward the second upward inclined groove 722. During this process, the second movable table 5 falls under the action of gravity, causing the second limiting pin 214 to rise in the second upward inclined groove. When the second limiting pin 214 rises to the top of the second upward inclined groove 722, the second lifting slider 7 drives the second movable table 5 to descend to a position level with the opening of the receiving groove 31. The movable frame 2 is then pushed further to push the second movable table 5 into the receiving groove 31, completing the switch from the second unfolded state to the first unfolded state. Next, the movable frame 2 is pushed in the reverse direction, causing the first limiting pin 213 to move along the first horizontal groove 621 toward the first upward inclined groove 622. During this process, the first movable table 4 falls under the action of gravity, causing the first limiting pin 213 to rise in the first upward inclined groove. When the first limiting pin 213 rises to the top of the first upward inclined groove 622, the first lifting slider 7 drives the second movable table 5 to descend to a position level with the opening of the receiving groove 31. The movable frame 2 is then pushed further, pushing the second movable table 5 into the receiving groove 31, completing the switch from the second unfolded state to the first unfolded state. Block 6 lowers the first movable tabletop 4 to a position level with the opening of the receiving groove 31, and continues to push the movable frame 2 to push the first movable tabletop 4 into the receiving groove 31, completing the switch from the first unfolded state to the folded state. It can be seen that, regardless of whether it is the folded state, the first unfolded state, or the second unfolded state, the entire process only requires pulling out the movable frame 2. While pulling out the movable frame 2, the relative movement of the first lifting slider 6, the second lifting slider 7, and the sub-rail 21 is used to lift the first movable tabletop 4 and the first tabletop, thereby realizing the storage and splicing of the first movable tabletop 4 and the second movable tabletop 5. The operation is simple and convenient, suitable for one person to operate. In summary, the segmented pull-out extension table of the present invention achieves switching between different states of multiple sizes by pulling out the movable frame 2, combined with the relative movement of the first lifting slider 6, the second lifting slider, and the sub-rail 21. The structure is simple and the operation is convenient, solving the problem of cumbersome deformation operation and reliance on multiple people for the various extension forms of pull-out extension tables in the prior art.

[0082] In some possible embodiments of the present invention, such as Figure 1 As shown, the first lifting slider 6 is provided with two first sliding grooves 62, and the sub-rail 21 is provided with two corresponding first limiting pins 213. The two first sliding grooves 62, together with the first limiting pins 213, can provide a more balanced lifting force for the first lifting slider 6, making the structure run more smoothly. Similarly, the second lifting slider 7 is provided with two second sliding grooves 72, and the sub-rail 21 is provided with two corresponding second limiting pins 214. The effect is similar, and will not be described in detail here.

[0083] In some possible embodiments of the present invention, such as Figure 1As shown, the first movable tabletop 4 and the second movable tabletop 5 are provided with rollers 10 at their bottoms. The first movable tabletop 4 and the second movable tabletop 5 are mounted on the sub-rail 21 by means of the rollers 10. This reduces the friction between the first movable tabletop 4 and the second movable tabletop 5 and the sub-rail 21, making the sliding between the first movable tabletop 4 and the second movable tabletop 5 and the sub-rail 21 smoother.

[0084] In some possible embodiments of the present invention, the segmented pull-out extension table further includes a third movable table panel and a third lifting slider disposed at the bottom of the third movable table panel. The third movable table panel is arranged side by side with the first movable table panel 4 and the second movable table panel 5 in the receiving groove 31. In the second unfolded state, the movable component is pulled out further, so that the third lifting slider is lifted to a position flush with the fixed table panel 3. The specific principle is similar to that of the first movable table panel 4 and the second movable table panel 5, and will not be described in detail here.

[0085] In some possible embodiments of the present invention, such as Figure 2 , Figure 7 as well as Figure 8 As shown, the second upper inclined groove 722 is connected to the middle of the second horizontal groove 721. When the second limiting pin 214 moves along the second upper inclined groove 722 to the second horizontal groove 721, it first moves away from the fixed frame 1 in the second horizontal groove 721 so that the second movable table 5 is pulled out from the receiving groove 31 and moves away from the fixed table 3 at a certain distance before it starts to lift, so as to avoid interference with the fixed table 3 during the lifting process. After the second movable table 5 has completed the lifting, the movable frame 2 is pushed in the opposite direction to make the second limiting pin 214 move towards the fixed frame 1 in the second horizontal groove 721, so that the second movable table 5 is aligned and spliced ​​with the fixed table 3.

[0086] In some possible embodiments of the present invention, such as Figure 2 , Figure 7 as well as Figure 8 As shown, the first upper inclined groove 622 is connected to the middle of the first horizontal groove 621. When the first limiting pin 213 moves along the first upper inclined groove 622 to the first horizontal groove 621, it first moves away from the fixed frame 1 in the first horizontal groove 621 so that the first movable table 4 is pulled out from the receiving groove 31 and moves away from the fixed table 3 at a certain distance before it starts to lift, so as to avoid interference with the fixed table 3 during the lifting process. After the first movable table 4 has completed the lifting, the movable frame 2 is pushed in the opposite direction to make the first limiting pin 213 move towards the fixed frame 1 in the first horizontal groove 621, so that the first movable table 4 is aligned and spliced ​​with the fixed table 3.

[0087] In some possible embodiments of the present invention, such as Figure 2 As shown, the first sliding groove 62 also includes a first downward inclined groove 623 connected to the end of the first horizontal groove 621 away from the fixed frame 1. In the first unfolded state, the first positioning pin 61 is limited by the positioning member 12, and the movable frame 2 is pulled away from the fixed frame 1. The movable frame 2 drives the sub-rail 21 to move and at the same time causes the sub-rail 21 to slide relative to the first lifting slider 6. The first limiting pin 213 on the sub-rail 21 moves along the first horizontal groove 621 toward the first downward inclined groove 623, and at the same time continues to lift the first lifting slider 6, so that the first positioning pin 61 is lifted and passes the positioning member 12. The first positioning pin 61 is released, so that the first lifting slider 6 continues to follow the sub-rail 21.

[0088] In some possible embodiments of the present invention, such as Figure 1 as well as Figure 4 As shown, the positioning component 12 includes a connecting part 121 and a positioning part 122. The positioning component 12 passes through the sub-rail 21 and is connected to the main rail 11 via the connecting part 121.

[0089] In some possible embodiments of the present invention, such as Figure 4 As shown, the positioning part 122 is provided with a lifting groove 122a. The side wall of the lifting groove 122a is provided with a positioning port 122b and a release port 122c corresponding to the first positioning pin 61 and the second positioning pin 71. The upper part of the side wall opposite to the positioning port 122b of the lifting groove 122a is provided with an opening 122d. A movable baffle 122e is rotatably provided on the opening 122d to form a one-way passage structure. When the first positioning pin 61 and the second positioning pin 71 are inside the lifting groove 122a, the movable baffle 122e is closed on the opening 122d, so that the first positioning pin 61 and the second positioning pin 71 rise or fall along the lifting groove 122a. When the first positioning pin 61 and the second positioning pin 71 are outside the lifting groove 122a, the first positioning pin 61 and the second positioning pin 71 can push the movable baffle 122e to rotate at a set height and enter the lifting groove 122a from the opening 122d. When the first lifting slider 6 slides on the sub-rail 21, it enters the lifting groove 122a through the positioning port 122b. The lifting hole limits the first positioning pin 61 while satisfying the lifting action of the first lifting slider 6. When the first positioning pin 61 moves into the first downward inclined groove 623, the first positioning pin 61 is lifted and slides out of the positioning member 12 from the release port 122c. The movable frame 2 is pulled further, so that the positioning member 12 limits the second positioning pin 71. During the unfolding of the second movable table 5, the first movable table 4 rises and slides out of the positioning member 12 from the release port 122c, and enters the lifting groove 122a from the opening 122d during the storage process.

[0090] In some possible embodiments of the present invention, such as Figure 1 As shown, the fixed frame 1 is provided with two main rails 11, which are respectively vertically arranged at both ends of the fixed frame 1; the movable frame 2 is provided with two auxiliary rails 21, which are respectively vertically arranged at both ends of the movable frame 2, and the auxiliary rails 21 are respectively slidably arranged on the corresponding main rails 11; the fixed table 3 and the movable table are respectively mounted on the two main rails 11 and the auxiliary rails 21.

[0091] In some possible embodiments of the present invention, such as Figure 3 As shown, the main rail 11 is provided with a main slide groove 111, and a main pulley 112 is provided in the main slide groove 111. The secondary rail 21 is provided with a secondary slide groove 211, and a secondary pulley 212 is provided in the secondary slide groove 211. The main pulley 112 is connected to the secondary rail 21, and the secondary pulley 212 is connected to the main rail 11. The main pulley 112 is realized by sliding in the main slide groove 111 and the secondary slide groove 211 respectively.

[0092] In some possible embodiments of the present invention, such as Figure 2 As shown, the segmented pull-out extension table also includes several stop blocks 8. One end of the stop block 8 is rotatably mounted on the first lifting slider 6 and the second lifting slider 7. By rotating the stop block 8, the stop block 8 is mounted on the first sliding groove 62 or the second sliding groove 72, thereby limiting the movement of the first limiting pin 61 or the second limiting pin 71 in the groove.

[0093] In some possible embodiments of the present invention, such as Figure 1 As shown, the segmented pull-out extension table also includes several legs 9, which are fixed to the bottom of the fixed frame 1 and the movable frame 2 to provide support.

[0094] In summary, the segmented pull-out extension table of the present invention has the following advantages:

[0095] 1. Multiple state switching:

[0096] Segmented design: Through the design of the first movable table 4 and the second movable table 5, a smooth transition from the folded state to the first unfolded state and then to the second unfolded state is achieved;

[0097] The limiting pins cooperate with the sliding grooves: the movement of the first limiting pin 213 and the second limiting pin 214 in their respective sliding grooves enables the precise positioning and stable lifting of the table.

[0098] 2. Ease of operation:

[0099] One-way operation: Simply pull out the movable frame 2 to unfold and fold the tabletop, simplifying the operation process;

[0100] Single-person operation: Designed for single-person operation, eliminating the need for multiple people to assist, thus improving ease of use.

[0101] 3. Structural stability:

[0102] Double sliding groove design: The first lifting slider 6 and the second lifting slider 7 are each provided with two sliding grooves to provide balanced lifting force and ensure smooth operation of the structure;

[0103] Roller 10 design: Rollers 10 are installed at the bottom of the movable table to reduce friction and improve smoothness of sliding.

[0104] 4. Scalability:

[0105] Optional third movable table: A third movable table can be added as needed to further expand the desktop space.

[0106] 5. Anti-interference design:

[0107] The upper inclined groove is connected to the middle of the horizontal groove: This prevents the movable table from interfering with the fixed table 3 by moving the horizontal groove back and forth during the lifting process, thus ensuring smooth lifting.

[0108] 6. Precise control:

[0109] Positioning component 12 and lifting groove 122a: Through the cooperation of positioning component 12 and lifting groove 122a, precise control of the limit pin is achieved, ensuring the lifting and lowering action of the lifting slider.

[0110] 7. Additional features:

[0111] Stop block 8 design: The stop block 8 limits the movement of the limit pin in the sliding groove, increasing the safety of operation;

[0112] Leg 9 design: Adding leg 9 provides extra support and enhances the stability of the entire table.

[0113] This patented segmented pull-out extension table achieves a smooth transition from a folded state to two different extended states through its innovative segmented design and lifting slider mechanism. Its design focuses on simplifying the operation process, allowing a single person to unfold and fold the tabletop while maintaining structural stability and smooth operation. Precise limit pin control and anti-interference design ensure the accuracy and safety of the tabletop lifting. Furthermore, the optional extension tabletop and the additional stop blocks 8 and support legs 9 further enhance the table's applicability and stability. Overall, this patented design solves the problems of cumbersome operation and reliance on multiple people in existing pull-out extension tables, providing a simple and convenient solution. Therefore, this invention effectively overcomes the various shortcomings of existing technologies and has high industrial applicability.

[0114] 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 segmented pull-out extension table, characterized in that, include: A fixed frame (1) and a movable frame (2) are provided. A main rail (11) and a secondary rail (21) are respectively provided on the fixed frame (1) and the movable frame (2). The secondary rail (21) is slidably disposed on the main rail (11). A positioning element (12) is provided on the main rail (11). A first limiting pin (213) and a second limiting pin (214) are provided on the secondary rail (21). The table includes a fixed table (3), a first movable table (4), and a second movable table (5). The fixed table (3) is mounted on the main rail (11), and the first movable table (4) and the second movable table (5) are mounted side by side on the secondary rail (21). The first lifting slider (6) and the second lifting slider (7) are fixed to the bottom of the first movable table (4) and slidably mounted on the sub-rail (21). The second lifting slider (7) is fixed to the bottom of the second movable table (5) and slidably mounted on the sub-rail (21). The first lifting slider (6) is provided with a first sliding groove (62) and a first positioning pin (61) that cooperates with the positioning member (12). The first limiting pin (213) is movably mounted on the first sliding groove (62). The second lifting slider (7) is provided with a second sliding groove. (72) and a second positioning pin (71) that cooperates with the positioning component (12), the second limiting pin (214) being movably disposed on the second sliding groove (72); the first sliding groove (62) includes a first horizontal groove (621) and a first upper inclined groove (622) connected to the first horizontal groove (621), the second sliding groove (72) includes a second horizontal groove (721) and a second upper inclined groove (722) connected to the second horizontal groove (721), pushing and pulling the movable frame (2) drives the segmented pull-out extension table to switch between the folded state, the first unfolded state and the second unfolded state; In the retracted state, the first limiting pin (213) and the second limiting pin (214) are respectively located in the first upper inclined groove (622) and the second upper inclined groove (722), and the first movable table (4) and the second movable table (5) are respectively disposed at the lower part of the fixed table (3); in the first unfolded state, the first limiting pin (213) moves to the first horizontal groove (621), and the first movable table (4) is pulled out from the lower part of the fixed table (3) and lifted by the first lifting slider (6) to a position flush with the fixed table (3); in the second unfolded state, the second limiting pin (214) moves to the second horizontal groove (721), and the second movable table (5) is pulled out from the lower part of the fixed table (3) and lifted by the second lifting slider (7) to a position flush with the first movable table (4) and the fixed table (3).

2. The segmented pull-out extension table according to claim 1, characterized in that: The positioning component (12) includes a connecting part (121) and a positioning part (122). The positioning component (12) is connected to the main rail (11) through the connecting part (121) by passing through the sub-rail (21).

3. The segmented pull-out extension table according to claim 2, characterized in that: The positioning part (122) is provided with a lifting groove (122a). The side wall of the lifting groove (122a) is provided with a positioning port (122b) and a release port (122c) corresponding to the first positioning pin (61) and the second positioning pin (71). When the first lifting slider (6) slides on the sub-rail (21), it enters the lifting groove (122a) through the positioning port (122b). The lifting hole limits the first positioning pin (61) while satisfying the lifting action of the first lifting slider (6). When the first positioning pin (61) moves into the first downward inclined groove (623), the first positioning pin (61) is lifted and slides out of the positioning member (12) from the release port (122c). The movable frame (2) is pulled to limit the second positioning pin (71).

4. The segmented pull-out extension table according to claim 3, characterized in that: The lifting groove (122a) has an opening (122d) on the upper part of the side wall opposite to the positioning port (122b). A movable baffle (122e) is rotatably provided on the opening (122d) to form a one-way passage structure. When the first positioning pin (61) and the second positioning pin (71) are inside the lifting groove (122a), the movable baffle (122e) is closed on the opening (122d), so that the first positioning pin (61) and the second positioning pin (71) rise or fall along the lifting groove (122a). When the first positioning pin (61) and the second positioning pin (71) are outside the lifting groove (122a), the first positioning pin (61) and the second positioning pin (71) can push the movable baffle (122e) to rotate at a set height and enter the lifting groove (122a) from the opening (122d).

5. The segmented pull-out extension table according to claim 4, characterized in that: The second upper inclined groove (722) is connected to the middle of the second horizontal groove (721). When the second limiting pin (214) moves along the second upper inclined groove (722) to the second horizontal groove (721), it first moves away from the fixed frame (1) in the second horizontal groove (721) so that the second movable table (5) is pulled out from the bottom of the fixed table (3) and moves away from the fixed table (3) by a certain distance before it starts to lift, so as to avoid interference with the fixed table (3) during the lifting process. After the second movable table (5) has completed the lifting, the movable frame (2) is pushed in the opposite direction so that the second limiting pin (214) moves in the second horizontal groove (721) towards the fixed frame (1), thereby aligning and splicing the second movable table (5) with the fixed table (3).

6. The segmented pull-out extension table according to claim 5, characterized in that: The first upper inclined groove (622) is connected to the middle of the first horizontal groove (621). When the first limiting pin (213) moves along the first upper inclined groove (622) to the first horizontal groove (621), it first moves away from the fixed frame (1) in the first horizontal groove (621) so that the first movable table (4) is pulled out from the bottom of the fixed table (3) and away from the fixed table (3) for a certain distance before it starts to lift, so as to avoid interference with the fixed table (3) during the lifting process. After the first movable table (4) has completed the lifting, the movable frame (2) is pushed in the opposite direction so that the first limiting pin (213) moves in the first horizontal groove (621) towards the fixed frame (1), thereby aligning and splicing the first movable table (4) with the fixed table (3).

7. The segmented pull-out extension table according to claim 6, characterized in that: The first sliding groove (62) also includes a first downward inclined groove (623) connected to the end of the first horizontal groove (621) away from the fixed frame (1). In the first unfolded state, the first positioning pin (61) is limited by the positioning member (12) and pulls the movable frame (2) away from the fixed frame (1). The movable frame (2) drives the sub-rail (21) to move and at the same time causes the sub-rail (21) to slide relative to the first lifting slider (6). The first limiting pin (213) on the sub-rail (21) moves along the first horizontal groove (621) toward the first downward inclined groove (623) and at the same time continues to lift the first lifting slider (6), so that the first positioning pin (61) is lifted and slides out of the positioning member (12) from the release port (122c). The first positioning pin (61) is released, so that the first lifting slider (6) continues to follow the sub-rail (21).

8. The segmented pull-out extension table according to claim 1, characterized in that: The fixed frame (1) is provided with two main rails (11), which are respectively located at both ends of the fixed frame (1); the movable frame (2) is provided with two auxiliary rails (21), which are respectively located at both ends of the movable frame (2), and the auxiliary rails (21) are respectively slidably mounted on the corresponding main rails (11); the fixed table (3) and the movable table are respectively mounted on the two main rails (11) and the auxiliary rails (21).

9. The segmented pull-out extension table according to claim 1, characterized in that: The main rail (11) is provided with a main slide groove (111), and a main pulley (112) is provided in the main slide groove (111). The secondary rail (21) is provided with a secondary slide groove (211), and a secondary pulley (212) is provided in the secondary slide groove (211). The main pulley (112) is connected to the secondary rail (21), and the secondary pulley (212) is connected to the main rail (11). The main pulley (112) is realized by sliding the main pulley (112) and the secondary pulley (212) in the main slide groove (111) and the secondary slide groove (211) respectively.

10. The segmented pull-out extension table according to claim 1, characterized in that: The segmented pull-out extension table also includes several stop blocks (8). One end of the stop block (8) is rotatably mounted on the first lifting slider (6) and the second lifting slider (7). By rotating the stop block (8), the stop block (8) is mounted on the first sliding groove (62) or the second sliding groove (72), thereby limiting the movement of the first limiting pin (61) or the second limiting pin (71) in the groove.

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