Telescopic outdoor table

By using a linkage structure and chain to drive the middle table to move up and down, the expansion and folding operations of the outdoor table are simplified, solving the problem of cumbersome operation in existing technologies and improving the user experience.

CN224112291UActive Publication Date: 2026-04-14FOSHAN SHUNDE DISTRICT JISHENG METAL PRODUCTS CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-03-24
Publication Date
2026-04-14

AI Technical Summary

Technical Problem

Existing outdoor tables are cumbersome to operate when expanding and folding up, which affects the user experience.

Method used

It adopts a linkage structure of the first table, the second table and the middle table. The linkage structure and the chain drive the middle table to move up and down, so as to expand and fold up the tabletop, simplifying the operation.

Benefits of technology

This makes expanding and folding the outdoor table simple and convenient, greatly improving the user experience.

✦ Generated by Eureka AI based on patent content.

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  • Figure CN224112291U_ABST
    Figure CN224112291U_ABST
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Abstract

A telescopic outdoor table comprises a first table body, a second table body and a middle table body, a first guide rail is arranged on the first table body, a second guide rail is arranged on the second table body, a middle guide rail assembly is arranged on the middle table body and comprises a middle guide rail and a linkage rail, and the middle guide rail is in sliding connection with the first guide rail and the second guide rail. The middle table body is connected with the linkage rail in a matched mode, the middle guide rail is vertically and movably connected with the middle table body, linkage structures are arranged between the linkage rail and the first guide rail and between the linkage rail and the second guide rail, and the first guide rail and the second guide rail are arranged on the middle guide rail in a mutually opening and closing mode. When the outdoor table is expanded, the second table body only needs to be pulled out in the first direction, the middle table body can be driven to move in the first direction, the first table body, the second table body and the middle table body form a table top, when the outdoor table is folded, the second table body only needs to be pushed in in the second direction, the second table body drives the middle table body to move in the second direction, and the table top is formed. The first table body and the second table body form a table top.
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Description

Technical Field

[0001] This utility model relates to the field of table technology, and in particular to a retractable outdoor table. Background Technology

[0002] Some outdoor tables on the market have an extendable function. These tables generally have three tabletops. When the outdoor table is folded up, the middle tabletop is hidden under the two side tabletops. To extend the outdoor table, you need to pull the two side tabletops outwards and then pull the middle tabletop up, and the three tabletops will form a tabletop. To fold up the outdoor table, push the middle tabletop down and then push the two side tabletops inwards, and the two side tabletops will form a tabletop. However, the operation of extending and folding up these outdoor tables is relatively cumbersome, making them inconvenient to use and affecting the user experience.

[0003] Therefore, further improvements are necessary. Utility Model Content

[0004] The purpose of this invention is to provide a retractable outdoor table that is simple in structure, easy to operate, convenient to use, provides a good user experience, and is highly practical, so as to overcome the shortcomings of the prior art.

[0005] A retractable outdoor table designed for this purpose is characterized by comprising a first table body, a second table body, and a middle table body. The first table body is provided with a first guide rail, the second table body with a second guide rail, and the middle table body with a middle guide rail assembly. The middle guide rail assembly includes a middle guide rail and a linkage rail. The middle guide rail is slidably connected to the first and second guide rails respectively. The middle table body is connected to the linkage rail, and the middle guide rail is vertically connected to the middle table body. A linkage structure is provided between the linkage rail and the first and second guide rails. The first and second guide rails are mutually openable and closable on the middle guide rail. When the first or second table body is pulled out in a first direction, the middle table body moves upward through the linkage structure, so that the first, second, and middle table bodies form a tabletop. When the first or second table body is pushed in in a second direction, the middle table body moves downward through the linkage structure, and the first and second table bodies form a tabletop.

[0006] The first table and the first guide rail are fixedly installed, while the second table and the second guide rail are movable. When the second table is pulled out in the first direction, it causes the middle table to move in the first direction. When the second table and the middle table move in the first direction to their corresponding positions, the middle table moves upward through a linkage structure, so that the first table, the second table, and the middle table form a tabletop. When the second table is pushed in in the second direction, the middle table moves downward through a linkage structure, and the second table causes the middle table to move in the second direction. When the second table and the middle table move in the second direction to their maximum positions, the first table and the second table form a tabletop.

[0007] A sprocket assembly is provided on the middle guide rail. The sprocket assembly includes sprockets at both ends of the middle guide rail and a chain between the two sprockets. The first guide rail is installed on the first side of the chain, and the second guide rail is installed on the second side of the chain. The first guide rail and the second guide rail are connected to each other on the middle guide rail by the chain. Thus, when the second table is pulled out in the first direction, it drives the middle table to move in the first direction. When the second table is pushed in in the second direction, it drives the middle table to move in the second direction.

[0008] The linkage structure includes a sliding shaft mounted on the first and second guide rails, and a track groove mounted on the linkage rail. The track groove includes an upper movable groove, a middle groove, and a lower movable groove. The middle groove and the lower movable groove are located at the lower ends of the upper movable groove, and the upper and lower movable grooves are connected through the middle groove. The sliding shaft corresponds one-to-one with the middle groove and the lower movable groove. When the first and second guide rails are open to each other, the sliding shaft slides from the upper movable groove through the middle groove into the lower movable groove to drive the linkage rail to move upward. When the first and second guide rails are closed to each other, the sliding shaft slides from the lower movable groove through the middle groove into the upper movable groove to drive the linkage rail to move downward.

[0009] The lower movable groove is provided with a stop area, an intermediate position, and a transition area. The intermediate position is connected to the intermediate groove. Limiting strips are rotatably set at both ends of the linkage rail corresponding to the positions of the lower movable groove. When the sliding shaft slides from the upper movable groove through the intermediate groove into the lower movable groove, the sliding shaft pushes the limiting strips to rotate in a third direction, and the sliding shaft slides into the transition area. The second table and the intermediate table move to their maximum positions in the first direction. When the sliding shaft is in the transition area, the first guide rail and the second guide rail move towards the center of the linkage rail, so that the sliding shaft slides from the transition area through the intermediate position to the stop area, and the sliding shaft pushes the limiting strips to rotate in a fourth direction. When the sliding shaft is in the stop area, the first guide rail and the second guide rail move towards both ends of the linkage rail, so that the sliding shaft slides from the stop area to the intermediate position. The linkage rail moves downward under the action of gravity, so that the sliding shaft slides from the lower movable groove through the intermediate groove into the upper movable groove, realizing the mutual closure of the first guide rail and the second guide rail.

[0010] The two ends of the linkage rail are respectively provided with a first limiting protrusion and a second limiting protrusion corresponding to the position of the lower movable groove; when the sliding shaft pushes the limiting bar to rotate in the third direction, the first limiting protrusion acts on the limiting bar to limit it; when the sliding shaft pushes the limiting bar to rotate in the fourth direction, the second limiting protrusion acts on the limiting bar to limit it.

[0011] The first table body is equipped with a first support leg at the bottom, and the second table body is equipped with a second support leg at the bottom. Casters are installed at the bottom of either the first or second support leg.

[0012] The bottom of the central table is equipped with several movable columns, and the central guide rail is equipped with several movable holes. The movable columns pass through the movable holes. When the central table moves up and down relative to the central guide rail, the movable columns move up and down on the movable holes.

[0013] A first positioning hole is provided on one side of the first table body, and a first positioning pin is provided on one side of the second table body. When the first table body and the second table body form a tabletop, the first positioning pin is positioned and inserted into the first positioning hole.

[0014] The middle table has a second positioning pin on one side and a second positioning hole on the other side. When the first table, the second table and the middle table form a tabletop, the second positioning pin is inserted into the first positioning hole, and the first positioning pin is inserted into the second positioning hole.

[0015] The first table body includes a fixed frame and a fixed tabletop; the second table body includes a movable frame and a movable tabletop; the middle table body includes a middle frame and a middle tabletop; a first guide rail is located at the bottom of the fixed frame, and the fixed tabletop covers the top of the fixed frame; a second guide rail is located at the bottom of the movable frame, and the movable tabletop covers the top of the movable frame; a middle guide rail assembly is located at the bottom of the middle frame, and the middle tabletop covers the top of the middle frame.

[0016] The bottom of the fixed frame is provided with a first connecting plate, which is connected to the first support leg. The bottom of the movable frame is provided with a second connecting plate, which is connected to the second support leg.

[0017] When the extendable outdoor table of this utility model is extended, simply pull the second table body out in the first direction, which will cause the middle table body to move in the first direction. Then, the middle table body moves upward through the linkage structure, and the first table body, the second table body, and the middle table body form the tabletop. When the extendable outdoor table is folded up, simply push the second table body in in the second direction, and the middle table body moves downward through the linkage structure. The second table body then causes the middle table body to move in the second direction, and the first table body and the second table body form the tabletop. The operation of extending and folding up this extendable outdoor table is very simple. It only requires pulling out or pushing in the second table body, without any other operation, making the extendable outdoor table very convenient to use and greatly improving the user experience. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the outdoor table when it is folded up and in use, according to one embodiment of the present invention.

[0019] Figure 2 This is a schematic diagram of the overall structure of the outdoor table when it is extended and used in one embodiment of this utility model.

[0020] Figure 3 This is a partial structural diagram of an outdoor table in one embodiment of the present invention when it is folded up for use.

[0021] Figure 4 This is a partial structural diagram of an outdoor table in one embodiment of the present invention when it is extended for use.

[0022] Figure 5 This is an exploded structural diagram of an outdoor table in one embodiment of the present invention when it is folded up for use.

[0023] Figure 6 This is an exploded view of an outdoor table in one embodiment of the present invention.

[0024] Figure 7 This is an exploded structural diagram of the intermediate frame and the movable frame in one embodiment of the present invention.

[0025] Figure 8 This is a cross-sectional view of an outdoor table in one embodiment of the present invention.

[0026] Figure 9 This is a partial structural cross-sectional view of an outdoor table in one embodiment of the present invention.

[0027] Figure 10 This is a schematic diagram of the assembly structure of the first guide rail, the second guide rail, and the intermediate guide rail in one embodiment of the present invention.

[0028] Figure 11 This is a schematic diagram of the cooperation structure between the linkage rail and the sliding shaft in one embodiment of the present invention.

[0029] Figure 12 This is a partial cross-sectional view of the second support leg in one embodiment of the present invention. Detailed Implementation

[0030] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0031] See Figures 1-12This extendable outdoor table is characterized by comprising a first table body 1, a second table body 2, and a middle table body 3, with the middle table body 3 located between the first table body 1 and the second table body 2. The first table body 1 is provided with a first guide rail 4, the second table body 2 is provided with a second guide rail 5, and the middle table body 3 is provided with a middle guide rail assembly. The middle guide rail assembly includes a middle guide rail 6 and a linkage rail 7. The middle guide rail 6 is slidably connected to the first guide rail 4 and the second guide rail 5, respectively. The middle table body 3 is connected to the linkage rail 7. The middle guide rail 6 and the middle table body 3 are... The upper and lower parts are connected, and a linkage structure is set between the linkage rail 7 and the first guide rail 4 and the second guide rail 5. The first guide rail 4 and the second guide rail 5 are set on the middle guide rail 6 to open and close. When the first table body 1 or the second table body 2 is pulled out in the first direction A, the middle table body 3 moves upward through the linkage structure so that the first table body 1, the second table body 2 and the middle table body 3 form a tabletop. When the first table body 1 or the second table body 2 is pushed in in the second direction B, the middle table body 3 moves downward through the linkage structure, and the first table body 1 and the second table body 2 form a tabletop.

[0032] The first table body 1 and the first guide rail 4 are fixedly installed, while the second table body 2 and the second guide rail 5 are movably installed. When the second table body 2 is pulled out in the first direction A, it drives the middle table body 3 to move in the first direction A. When the second table body 2 and the middle table body 3 move to the corresponding positions in the first direction A, the middle table body 3 moves upward through a linkage mechanism, so that the first table body 1, the second table body 2, and the middle table body 3 form a tabletop. At this time, the extendable outdoor table is in an extended use state, and the first table body 1, the second table body 2, and the middle table body 3 are at the same height. When the second table body 2 begins to be pushed in in the second direction B, the middle table body 3 moves downward through a linkage mechanism. Then, the second table body 2 drives the middle table body 3 to move in the second direction B. When table 3 moves to its maximum position in the second direction B, the first table 1 and the second table 2 form a tabletop. At this time, the retractable outdoor table is in the folded-up state, and the middle table 3 is located below the first table 1 and the second table 2. When the second table 2 is pulled out in the first direction A or pushed in in the second direction B, the first guide rail 4 does not move (i.e., the first table 1 does not move), the middle guide rail 6 and the second guide rail 5 move in the first direction A or the second direction B (i.e., the middle table 3 and the second table 2 move in the first direction A or the second direction B), and the second guide rail 5 moves relative to the middle guide rail 6 in the first direction A or the second direction B (i.e., the second table 2 moves relative to the middle table 3 in the first direction A or the second direction B).

[0033] A sprocket assembly is provided on the intermediate guide rail 6. The sprocket assembly includes sprockets 8 at both ends of the intermediate guide rail 6 and a chain 9 between the two sprockets 8. A first guide rail 4 is installed on the first side 10 of the chain 9, and a second guide rail 5 is installed on the second side 40 of the chain 9. The first guide rail 4 and the second guide rail 5 are connected to each other on the intermediate guide rail 6 via the chain 9. Thus, when the second table body 2 is pulled out in the first direction A, it drives the intermediate table body 3 to move in the first direction A; when the second table body 2 is pushed in in the second direction B, it drives the intermediate table body 3 to move in the second direction B. When the user pulls out or pushes in the second table body 2, the second guide rail 5 drives the chain 9 to move, the chain 9 drives the intermediate guide rail 6 to move (the first guide rail 4 does not move, so only the intermediate guide rail 6 moves), which in turn drives the intermediate table body 3 to move.

[0034] The linkage structure includes a sliding shaft 11 mounted on the first guide rail 4 and the second guide rail 5, and a track groove 12 mounted on the linkage rail 7. The track groove 12 includes an upper movable groove 13, a middle groove 14, and a lower movable groove 15. The middle groove 14 and the lower movable groove 15 are located at the lower ends of the upper movable groove 13, and the upper movable groove 13 and the lower movable groove 15 are connected through the middle groove 14. The sliding shaft 11 corresponds one-to-one with the middle groove 14 and the lower movable groove 15. When the first guide rail 4 and the second guide rail 5 are open to each other, the sliding shaft 11 slides from the upper movable groove 13 through the middle groove 14 into the lower movable groove 15, thereby driving the linkage rail 7 to move upward, and thus driving the middle table 3 to move upward. When the first guide rail 4 and the second guide rail 5 are closed to each other, the sliding shaft 11 slides from the lower movable groove 15 through the middle groove 14 into the upper movable groove 13, thereby driving the linkage rail 7 to move downward, and thus driving the middle table 3 to move downward.

[0035] The lower movable groove 15 is provided with a stop area 16, an intermediate position 17, and a transition area 18. The intermediate position 17 is connected to the intermediate groove 14. Limiting strips 19 are rotatably provided at both ends of the linkage rail 7 corresponding to the positions of the lower movable groove 15. When the sliding shaft 11 slides from the upper movable groove 13 through the intermediate groove 14 into the lower movable groove 15, the sliding shaft 11 pushes the limiting strips 19 to rotate in the third direction C (upward), and the sliding shaft 11 slides into the transition area 18. The limiting strips 19 rotate downward to reset. At this time, the second table body 2 and the intermediate table body 3 move to the maximum position in the first direction A. At this time, there is a gap between the intermediate table body 3 and the first table body 1 and the second table body 2, respectively. Therefore, the second table body 2 needs to be pushed in the second direction B. The second table body 2 drives the intermediate table body 3 to move in the second direction B, so that the first guide rail 4 and the second guide rail 5 move towards the center of the linkage rail 7, so that the sliding shaft 11 slides from the transition area 18 through the intermediate position 17 to the stop area 16. At this time, the intermediate table body 3... There is no gap between the first table body 1 and the second table body 2. The extension process of the retractable outdoor table is completed, and the sliding shaft 11 pushes the limiting strip 19 to rotate in the fourth direction D (upward). That is, the sliding shaft 11 passes the limiting strip 19, and then the limiting strip 19 rotates downward to reset. When the sliding shaft 11 is in the stop area 16, if the retractable outdoor table is to be folded up, first pull the second table body 2 out in the first direction A. The second table body 2 drives the middle table body 3 to move in the first direction A, so that the first guide rail 4 and the second guide rail 5 move in the directions of the two ends of the linkage rail 7 respectively, so that the sliding shaft 11 slides from the stop area 16 to the middle position 17. The linkage rail 7 moves downward under the action of gravity, so that the sliding shaft 11 slides from the lower movable groove 15 (middle position 17) through the middle groove 14 into the upper movable groove 13. At the same time, the linkage rail 7 drives the middle table body 3 to move downward, and then the second table body 2 drives the middle table body 3 to move in the second direction B. At the same time, the first guide rail 4 and the second guide rail 5 close each other.

[0036] The two ends of the linkage rail 7 are respectively provided with a first limiting protrusion 20 and a second limiting protrusion 21 corresponding to the positions of the lower movable groove 15. When the sliding shaft 11 pushes the limiting bar 19 to rotate in the third direction C, the first limiting protrusion 20 acts as a limiting point on the limiting bar 19. When the sliding shaft 11 pushes the limiting bar 19 to rotate in the fourth direction D, the second limiting protrusion 21 acts as a limiting point on the limiting bar 19. This structure prevents the linkage rail 7 from moving downward under the action of gravity when the sliding shaft 11 passes through the intermediate position 17, so that the sliding shaft 11 can smoothly slide from the transition area 18 through the intermediate position 17 to the stop area 16.

[0037] The first table body 1 is provided with a first support leg 22 at its bottom, and the second table body 2 is provided with a second support leg 23 at its bottom. The second support leg 23 is provided with a caster 24 for moving the second table body 2. The first support leg 22 is fixed so that the first table body 1 cannot move, while the second support leg 23 allows the second table body 2 to move. The second table body 2 moves on the ground via the caster 24, thereby allowing the second table body 2 to be pulled out in the first direction A or pushed in in the second direction B. The caster 24 is provided with a pivot 39, and the second support leg 23 is provided with a rotating hole at its bottom. The pivot 39 is rotatably connected to the rotating hole, thereby allowing the caster 24 to be rotatably mounted at the bottom of the second support leg 23.

[0038] The bottom of the middle table body 3 is provided with several movable columns 25, and the middle guide rail 6 is provided with several movable holes 26. The movable columns 25 pass through the movable holes 26. When the middle table body 3 moves up and down relative to the middle guide rail 6, the movable columns 25 move up and down on the movable holes 26. This structure allows the middle table body 3 to move up and down relative to the middle guide rail 6, but the middle table body 3 cannot move forward, backward or left and right relative to the middle guide rail 6, thus playing a guiding role in the up and down.

[0039] The first table body 1 has a first positioning hole 27 on one side and the second table body 2 has a first positioning pin 28 on one side. When the first table body 1 and the second table body 2 form a tabletop, the first positioning pin 28 is inserted into the first positioning hole 27 to position the first table body 1 and the second table body 2 for each other.

[0040] The middle table 3 has a second positioning pin 29 on one side and a second positioning hole 30 on the other side. When the first table 1, the second table 2 and the middle table 3 form a tabletop, the second positioning pin 29 is inserted into the first positioning hole 27 and the first positioning pin 28 is inserted into the second positioning hole 30, so that the first table 1 and the second table 2 can play a mutual positioning role with the middle table 3 respectively.

[0041] The first table body 1 includes a fixed frame 31 and a fixed tabletop 32. The second table body 2 includes a movable frame 33 and a movable tabletop 34. The middle table body 3 includes a middle frame 35 and a middle tabletop 36. The first guide rail 4 is located at the bottom of the fixed frame 31, and the fixed tabletop 32 covers the top of the fixed frame 31. The second guide rail 5 is located at the bottom of the movable frame 33, and the movable tabletop 34 covers the top of the movable frame 33. The middle guide rail assembly (middle guide rail 6 and linkage rail 7) is located at the bottom of the middle frame 35, and the middle tabletop 36 covers the top of the middle frame 35. The movable column 25 is located at the bottom of the middle frame 35.

[0042] The bottom of the fixed frame 31 is welded or screwed to a first connecting plate 37, which is connected (welded or screwed) to a first support leg 22. The bottom of the movable frame 33 is welded or screwed to a second connecting plate 38, which is connected (welded or screwed) to a second support leg 23.

[0043] The above describes the preferred embodiments of this utility model, illustrating and describing its basic principles, main features, and advantages. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made without departing from the spirit and scope of this utility model, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A retractable outdoor table, characterized in that: The system includes a first table body (1), a second table body (2), and a middle table body (3). The first table body (1) is equipped with a first guide rail (4), the second table body (2) is equipped with a second guide rail (5), and the middle table body (3) is equipped with a middle guide rail assembly. The middle guide rail assembly includes a middle guide rail (6) and a linkage rail (7). The middle guide rail (6) is slidably connected to the first guide rail (4) and the second guide rail (5) respectively. The middle table body (3) is connected to the linkage rail (7). The middle guide rail (6) is vertically connected to the middle table body (3), and the linkage rail (7) is connected to the first guide rail (4). A linkage structure is provided between the first guide rail (4) and the second guide rail (5). The first guide rail (4) and the second guide rail (5) are opened and closed on the middle guide rail (6). When the first table body (1) or the second table body (2) is pulled out in the first direction (A), the middle table body (3) moves upward through the linkage structure so that the first table body (1), the second table body (2) and the middle table body (3) form a tabletop. When the first table body (1) or the second table body (2) is pushed in in the second direction (B), the middle table body (3) moves downward through the linkage structure, and the first table body (1) and the second table body (2) form a tabletop.

2. The extendable outdoor table according to claim 1, characterized in that: The first table body (1) and the first guide rail (4) are fixedly set, while the second table body (2) and the second guide rail (5) are movably set. When the second table body (2) is pulled out in the first direction (A), it drives the middle table body (3) to move in the first direction (A). When the second table body (2) and the middle table body (3) move in the first direction (A) to the corresponding positions, the middle table body (3) moves upward through the linkage structure so that the first table body (1), the second table body (2) and the middle table body (3) form a tabletop. When the second table body (2) is pushed in in the second direction (B), the middle table body (3) moves downward through the linkage structure. The second table body (2) drives the middle table body (3) to move in the second direction (B). When the second table body (2) and the middle table body (3) move in the second direction (B) to the maximum position, the first table body (1) and the second table body (2) form a tabletop.

3. The extendable outdoor table according to claim 2, characterized in that: A sprocket assembly is provided on the intermediate guide rail (6). The sprocket assembly includes sprockets (8) at both ends of the intermediate guide rail (6) and a chain (9) between the two sprockets (8). A first guide rail (4) is installed on the first side (10) of the chain (9), and a second guide rail (5) is installed on the second side (40) of the chain (9). The first guide rail (4) and the second guide rail (5) are connected to each other on the intermediate guide rail (6) through the chain (9). When the second table body (2) is pulled out in the first direction (A), it drives the intermediate table body (3) to move in the first direction (A). When the second table body (2) is pushed in in the second direction (B), it drives the intermediate table body (3) to move in the second direction (B).

4. The extendable outdoor table according to claim 3, characterized in that: The linkage structure includes a sliding shaft (11) disposed on the first guide rail (4) and the second guide rail (5), and a track groove (12) disposed on the linkage rail (7). The track groove (12) includes an upper movable groove (13), a middle groove (14), and a lower movable groove (15). The middle groove (14) and the lower movable groove (15) are respectively located at the lower ends of the upper movable groove (13). The upper movable groove (13) and the lower movable groove (15) are connected through the middle groove (14). The sliding shaft (11) is respectively connected to the upper movable groove (13) and the lower movable groove (15). The middle groove (14) and the lower movable groove (15) correspond one-to-one; when the first guide rail (4) and the second guide rail (5) are open to each other, the sliding shaft (11) slides from the upper movable groove (13) through the middle groove (14) into the lower movable groove (15) to drive the linkage rail (7) to move upward; when the first guide rail (4) and the second guide rail (5) are closed to each other, the sliding shaft (11) slides from the lower movable groove (15) through the middle groove (14) into the upper movable groove (13) to drive the linkage rail (7) to move downward.

5. The extendable outdoor table according to claim 4, characterized in that: The lower movable groove (15) is provided with a stop area (16), an intermediate position (17) and a transition area (18). The intermediate position (17) is connected to the intermediate groove (14). The two ends of the linkage rail (7) are respectively provided with limit bars (19) corresponding to the positions of the lower movable groove (15). When the sliding shaft (11) slides from the upper movable groove (13) through the intermediate groove (14) into the lower movable groove (15), the sliding shaft (11) pushes the limit bar (19) to rotate in the third direction (C), and the sliding shaft (11) slides into the transition area (18). The second table body (2) and the intermediate table body (3) move to the maximum position in the first direction (A). When the sliding shaft (11) is in the transition area (18), the first guide rail (4) and the second guide rail (5) The sliding shaft (11) moves towards the center of the linkage rail (7) respectively, so that the sliding shaft (11) slides from the transition area (18) through the intermediate position (17) to the stop area (16), and the sliding shaft (11) pushes the limit bar (19) to rotate in the fourth direction (D); when the sliding shaft (11) is in the stop area (16), the first guide rail (4) and the second guide rail (5) move towards the two ends of the linkage rail (7) respectively, so that the sliding shaft (11) slides from the stop area (16) to the intermediate position (17), and the linkage rail (7) moves downward under the action of gravity, so that the sliding shaft (11) slides from the lower movable groove (15) through the intermediate groove (14) into the upper movable groove (13), realizing the mutual closure of the first guide rail (4) and the second guide rail (5).

6. The extendable outdoor table according to claim 5, characterized in that: The two ends of the linkage rail (7) are respectively provided with a first limiting protrusion (20) and a second limiting protrusion (21) corresponding to the position of the lower movable groove (15); when the sliding shaft (11) pushes the limiting bar (19) to rotate in the third direction (C), the first limiting protrusion (20) acts on the limiting bar (19) to limit; when the sliding shaft (11) pushes the limiting bar (19) to rotate in the fourth direction (D), the second limiting protrusion (21) acts on the limiting bar (19) to limit.

7. The extendable outdoor table according to claim 1, characterized in that: The bottom of the first table body (1) is provided with a first support leg (22), and the bottom of the second table body (2) is provided with a second support leg (23). The bottom of the first support leg (22) or the second support leg (23) is provided with a caster (24).

8. The extendable outdoor table according to claim 1, characterized in that: The bottom of the middle table (3) is provided with several movable columns (25), and the middle guide rail (6) is provided with several movable holes (26). The movable columns (25) pass through the movable holes (26). When the middle table (3) moves up and down relative to the middle guide rail (6), the movable columns (25) move up and down on the movable holes (26).

9. The extendable outdoor table according to claim 1, characterized in that: The first table body (1) has a first positioning hole (27) on one side and the second table body (2) has a first positioning pin (28) on one side. When the first table body (1) and the second table body (2) form a tabletop, the first positioning pin (28) is positioned and inserted into the first positioning hole (27). The middle table body (3) is provided with a second positioning pin (29) on one side and a second positioning hole (30) on the other side. When the first table body (1), the second table body (2) and the middle table body (3) form a tabletop, the second positioning pin (29) is positioned and inserted into the first positioning hole (27), and the first positioning pin (28) is positioned and inserted into the second positioning hole (30).

10. The extendable outdoor table according to claim 6, characterized in that: The first table body (1) includes a fixed frame (31) and a fixed tabletop (32), the second table body (2) includes a movable frame (33) and a movable tabletop (34), the middle table body (3) includes a middle frame (35) and a middle tabletop (36), the first guide rail (4) is located at the bottom of the fixed frame (31), the fixed tabletop (32) is covered on the top of the fixed frame (31), the second guide rail (5) is located at the bottom of the movable frame (33), the movable tabletop (34) is covered on the top of the movable frame (33), the middle guide rail assembly is located at the bottom of the middle frame (35), and the middle tabletop (36) is covered on the top of the middle frame (35).