Supporting structure of table and chair and table and chair

Abstract

The utility model discloses a table and chair supporting structure and a table and chair, the table and chair supporting structure comprises a first vertical rod, a second vertical rod, a transverse rod, a first locking mechanism, a second locking mechanism and an unlocking mechanism, the first vertical rod and the second vertical rod are oppositely arranged in the transverse direction; the transverse rod is arranged between the first vertical rod and the second vertical rod and can move in the vertical direction relative to the first vertical rod and the second vertical rod, the first locking mechanism and the second locking mechanism are both movably arranged on the transverse rod, the first locking mechanism locks the corresponding first vertical rod, and the second locking mechanism locks the corresponding second vertical rod. The unlocking mechanism is rotatably arranged on the cross rod, and the unlocking mechanism is in transmission fit with the first locking mechanism and the second locking mechanism so as to selectively and synchronously unlock the first vertical rod and the second vertical rod. Therefore, the position of the transverse rod can be limited according to the actual requirement of a user, the use scene of the supporting structure of the table and chair can be enriched, and the utilization rate of the supporting structure of the table and chair is increased.

Description

Technical Field

[0001] The utility model relates to the technical field of daily necessities, in particular to a support structure of a table and chair and the table and chair. Background Art

[0002] At present, the vertical rods and horizontal rods in the support structure of tables and chairs are not convenient for relative movement, and the locking mechanism and unlocking mechanism take up a lot of space. This makes the support structure of tables and chairs difficult for users to adjust, which makes the use process of tables and chairs more cumbersome and is not conducive to the manufacture of tables and chairs, which in turn limits the use scenarios of tables and chairs. Utility Model Content

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, one purpose of the present invention is to provide a support structure for a table and chair that is easy to unlock, thereby allowing the horizontal and vertical rods to move relative to each other, thereby facilitating the user's use of the table and chair and expanding the use scenarios of the table and chair.

[0004] The utility model further provides a table and chair.

[0005] According to the support structure of the table and chair of the present invention, it includes: a first vertical rod, a second vertical rod, a cross rod, a first locking mechanism, a second locking mechanism and an unlocking mechanism. The first vertical rod and the second vertical rod are arranged opposite to each other in the horizontal direction, and the cross rod is arranged between the first vertical rod and the second vertical rod and can move vertically relative to the first vertical rod and the second vertical rod. The first locking mechanism and the second locking mechanism can both be movably arranged on the cross rod, the first locking mechanism locks the corresponding first vertical rod and the second locking mechanism locks the corresponding second vertical rod, and the unlocking mechanism is rotatably arranged on the cross rod, and the unlocking mechanism is respectively cooperated with the first locking mechanism and the second locking mechanism to selectively and synchronously unlock the first vertical rod and the second vertical rod.

[0006] According to the support structure of the table and chair of the present invention, by arranging the first locking mechanism, the second locking mechanism and the unlocking mechanism on the horizontal bar, the horizontal bar can be selectively locked and unlocked relative to the first vertical bar and the second vertical bar, that is, the horizontal bar can be selectively stationary or move relative to the first vertical bar and the second vertical bar, so that the position of the horizontal bar can be limited according to the actual needs of the user, thereby enriching the use scenarios of the support structure of the table and chair, and improving the utilization rate of the support structure of the table and chair.

[0007] In some examples of the present invention, the unlocking mechanism includes: a rotary operating member and a rotary actuator, the rotary actuator is connected to the rotary operating member and is rotatably arranged on the cross bar, and the rotary actuator is respectively in transmission cooperation with the first locking mechanism and the second locking mechanism.

[0008] In some examples of the present invention, the rotary actuator is provided with a first limit groove and a second limit groove that are laterally opposite to each other, and the first limit groove is located on a side of the second limit groove adjacent to the second vertical rod; the first locking mechanism is provided with a first limit block and the second locking mechanism is provided with a second limit block, and the first limit block is located on a side of the second limit block adjacent to the second vertical rod, the first limit block cooperates with the first limit groove and the second limit block cooperates with the second limit groove, and the rotary actuator causes the first limit block to disengage from the first limit groove and the second limit block to disengage from the second limit groove by rotating.

[0009] In some examples of the present invention, the first locking mechanism includes: a first locking member and a first transmission member, the first locking member locks the corresponding first vertical rod, one end of the first transmission member is connected to the first locking member, and the other end of the first transmission member is provided with the first limit block; the second locking mechanism includes: a second locking member and a second transmission member, the second locking member locks the corresponding second vertical rod, one end of the second transmission member is connected to the second locking member, and the other end of the second transmission member is provided with the second limit block.

[0010] In some examples of the present invention, the first limit block is arranged at the top of the other end of the first transmission member, the second limit block is arranged at the top of the other end of the second transmission member, and the part of the first transmission member adjacent to its other end and the part of the second transmission member adjacent to its other end are arranged side by side and located at the bottom of the rotary actuator.

[0011] In some examples of the present invention, the first vertical rod is provided with a plurality of vertically spaced first locking holes, and the first locking member is locked in any one of the first locking holes; the second vertical rod is provided with a plurality of vertically spaced second locking holes, and the second locking member is locked in any one of the second locking holes.

[0012] In some examples of the present invention, the first locking mechanism also includes: a first elastic member, the first elastic member abuts between the first locking member and the cross bar to provide the first locking member with a locking force to lock the corresponding first vertical bar; the second locking mechanism also includes: a second elastic member, the second elastic member abuts between the second locking member and the cross bar to provide the second locking member with a locking force to lock the corresponding second vertical bar.

[0013] In some examples of the present invention, an avoidance groove is formed on the cross bar, and the rotary operating member is arranged in the avoidance groove.

[0014] In some examples of the present invention, the crossbar is provided with a limiting portion, and the rotary operating member is engaged with the limiting portion when the rotary operating member is rotated to the limit position.

[0015] The table and chair according to the present invention includes: the supporting structure of the table and chair described above.

[0016] Compared with the prior art, the present invention adopts a method of arranging a first locking mechanism, a second locking mechanism and an unlocking mechanism on the horizontal bar, so that the horizontal bar can be selectively locked and unlocked relative to the first vertical bar and the second vertical bar, that is, the horizontal bar can be selectively stationary or move relative to the first vertical bar and the second vertical bar, so that the position of the horizontal bar can be limited according to the actual needs of the user, thereby enriching the use scenarios of the supporting structure of the tables and chairs, and improving the utilization rate of the supporting structure of the tables and chairs.

[0017] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0019] Figure 1 1 is a schematic structural diagram of a support structure of a table and chair according to an embodiment of the present utility model;

[0020] Figure 2 This is a partial structural diagram of the support structure of the table and chair according to an embodiment of the present utility model from a first angle;

[0021] Figure 3 This is a schematic diagram of the partial structure of the support structure of the table and chair according to the second angle of the embodiment of the utility model.

[0022] Reference numerals:

[0023] 100. Support structure of tables and chairs;

[0024] 10. First vertical rod; 20. Second vertical rod; 30. Cross rod; 31. Avoidance groove; 32. Limiting part; 40. First locking mechanism; 41. First limiting block; 42. First locking member; 43. First transmission member; 44. First elastic member; 50. Second locking mechanism; 51. Second limiting block; 52. Second locking member; 53. Second transmission member; 54. Second elastic member; 60. Unlocking mechanism; 61. Rotating operating member; 62. Rotating actuator. DETAILED DESCRIPTION

[0025] The embodiments of the present invention are described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. The embodiments of the present invention are described in detail below.

[0026] Reference below Figure 1-Figure 3 A support structure 100 for a table and chair according to an embodiment of the present invention is described. The support structure 100 for a table and chair is applied to a table and chair.

[0027] like Figure 1-Figure 3 As shown, the support structure 100 of the table and chair according to the present invention includes: a first vertical rod 10, a second vertical rod 20, a cross rod 30, a first locking mechanism 40, a second locking mechanism 50 and an unlocking mechanism 60. The first vertical rod 10 and the second vertical rod 20 are arranged opposite to each other in the horizontal direction, the cross rod 30 is arranged between the first vertical rod 10 and the second vertical rod 20 and can be moved vertically relative to the first vertical rod 10 and the second vertical rod 20. The first locking mechanism 40 and the second locking mechanism 50 are both movably arranged on the cross rod 30. The first locking mechanism 40 locks the corresponding first vertical rod 10 and the second locking mechanism 50 locks the corresponding second vertical rod 20. The unlocking mechanism 60 is rotatably arranged on the cross rod 30. The unlocking mechanism 60 is respectively transmitted and cooperated with the first locking mechanism 40 and the second locking mechanism 50 to selectively and synchronously unlock the first vertical rod 10 and the second vertical rod 20.

[0028] The first and second vertical bars 10 and 20 are connected to each other in the left and right directions, so that an installation space can be formed between the first and second vertical bars 10 and 20, and the left end of the cross bar 30 is connected to the first vertical bar 10 and the right end of the cross bar 30 is connected to the second vertical bar 20. This arrangement can form a frame structure of the first vertical bar 10, the second vertical bar 20 and the cross bar 30, thereby improving the strength of the support structure 100 of the table and chair. The first vertical bar 10 and the second vertical bar 20 are parallel, and the cross bar 30 can move relative to the first and second vertical bars 10 and 20 along the length direction of the first and second vertical bars 10 and 20, so that other corresponding components can be installed when the cross bar 30 is in different positions relative to the first and second vertical bars 10 and 20, such as a seat cushion or a footrest can be installed on the cross bar 30.

[0029] In addition, the first locking mechanism 40 is located at one end of the cross bar 30, and the second locking mechanism 50 is located at the other end of the cross bar 30. The first locking mechanism 40 can lock the first vertical bar 10, so that the cross bar 30 and the first vertical bar 10 can be relatively stationary, and the second locking mechanism 50 can lock the second vertical bar 20, so that the cross bar 30 and the second vertical bar 20 can be relatively stationary. The unlocking mechanism 60 is located in the middle of the cross bar 30, and the unlocking mechanism 60 can be rotated relative to the cross bar 30. The unlocking mechanism 60 is respectively connected to the first locking mechanism 40 and the second locking mechanism 50. This arrangement makes it easy for the user to operate the unlocking mechanism 60 to unlock the first locking mechanism 40 and the second locking mechanism 50, so that the cross bar 30 can move relative to the first vertical bar 10 and the second vertical bar 20, thereby realizing the switching of the support structure 100 of the table and chair in various usage scenarios.

[0030] Therefore, by arranging the first locking mechanism 40, the second locking mechanism 50 and the unlocking mechanism 60 on the horizontal bar 30, the horizontal bar 30 can be selectively locked and unlocked relative to the first vertical bar 10 and the second vertical bar 20, that is, the horizontal bar 30 can be selectively stationary or moving relative to the first vertical bar 10 and the second vertical bar 20, so that the position of the horizontal bar 30 can be limited according to the actual needs of the user, thereby enriching the use scenarios of the support structure 100 of the table and chair, and improving the utilization rate of the support structure 100 of the table and chair.

[0031] Among them, such as Figure 1-Figure 3 As shown, the unlocking mechanism 60 includes: a rotary operating member 61 and a rotary actuator 62. The rotary actuator 62 is connected to the rotary operating member 61 and is rotatably arranged on the cross bar 30. The rotary actuator 62 is respectively in transmission cooperation with the first locking mechanism 40 and the second locking mechanism 50.

[0032] The first locking mechanism 40 and the second locking mechanism 50 are both connected to the rotary actuator 62. The rotary actuator 62 is connected to the first locking mechanism 40 and the second locking mechanism 50. The user can control the rotary actuator 62 to lock or unlock the first locking mechanism 40 and the second locking mechanism 50, thereby enriching the use scenarios of the support structure 100 of the table and chair and improving the utilization rate of the support structure 100 of the table and chair.

[0033] In addition, if Figure 3As shown, the rotary actuator 62 is provided with a first limit groove and a second limit groove that are laterally opposite to each other, and the first limit groove is located on the side of the second limit groove adjacent to the second vertical rod 20; the first locking mechanism 40 is provided with a first limit block 41 and the second locking mechanism 50 is provided with a second limit block 51, and the first limit block 41 is located on the side of the second limit block 51 adjacent to the second vertical rod 20, the first limit block 41 cooperates with the first limit groove and the second limit block 51 cooperates with the second limit groove, and the rotary actuator 62 rotates to disengage the first limit block 41 from the first limit groove and the second limit block 51 from the second limit groove.

[0034] That is to say, the rotary actuator 62 is respectively provided with a first limiting groove and a second limiting groove on the left and right sides of the first vertical rod 10 and the second vertical rod 20, a first limiting block 41 is provided on the side of the first locking mechanism 40 away from the first vertical rod 10, and a second limiting block 51 is provided on the side of the second locking mechanism 50 away from the second vertical rod 20, the first limiting block 41 and the second limiting block 51 are arranged opposite to each other on the left and right, and the first limiting block 41 and the first limiting groove are selectively limited and matched, and the second limiting block 51 and the second limiting groove are selectively limited and matched. Such an arrangement can enable the rotational force of the rotary actuator 62 to be transmitted to the first locking mechanism 40 and the second locking mechanism 50 through the first limiting block 41 and the first limiting groove, as well as the second limiting block 51 and the second limiting groove, so that the first locking mechanism 40 and the second locking mechanism 50 can selectively approach or move away from the first vertical rod 10 and the second vertical rod 20, and then the rotary actuator 62 can control the first locking mechanism 40 and the second locking mechanism 50 to lock or unlock the first vertical rod 10 and the second vertical rod 20.

[0035] In addition, if Figure 3 As shown, the first locking mechanism 40 includes: a first locking member 42 and a first transmission member 43, the first locking member 42 locks the corresponding first vertical rod 10, one end of the first transmission member 43 is connected to the first locking member 42, and the other end of the first transmission member 43 is provided with a first limit block 41; the second locking mechanism 50 includes: a second locking member 52 and a second transmission member 53, the second locking member 52 locks the corresponding second vertical rod 20, one end of the second transmission member 53 is connected to the second locking member 52, and the other end of the second transmission member 53 is provided with a second limit block 51.

[0036] The first locking member 42 and the first transmission member 43 constitute the main body of the first locking mechanism 40, and the second locking member 52 and the second transmission member 53 constitute the main body of the second locking mechanism 50. The first locking member 42 is located on the right side of the first vertical rod 10, and the second locking member 52 is located on the left side of the second vertical rod 20. This configuration allows the first locking member 42 to abut against the first vertical rod 10, and the second locking member 52 to abut against the second vertical rod 20, so that the first locking member 42 can lock the first vertical rod 10 and the second locking member 52 can lock the second vertical rod 20. The first locking member 42 is provided at the left end of the first transmission member 43, the first limiting block 41 is provided at the right end of the first transmission member 43, the second locking member 52 is provided at the right end of the second transmission member 53, and the second limiting block 51 is provided at the left end of the second transmission member 53. When the first limiting block 41 and the first limiting groove limit arrangement are engaged, When the first locking member 42 is closed, the first locking member 42 is away from the first vertical rod 10, and when the second limit block 51 and the second limit groove are limited and matched, the second locking member 52 is away from the second vertical rod 20. At this time, the first locking mechanism 40 and the second locking mechanism 50 are in an unlocked state for the first vertical rod 10 and the second vertical rod 20. When the first limit block 41 and the first limit groove are not limited and matched, the first locking member 42 abuts the first vertical rod 10, and when the second limit block 51 and the second limit groove are not limited and matched, the second locking member 52 abuts the second vertical rod 20. At this time, the first locking mechanism 40 and the second locking mechanism 50 are in a locked state for the first vertical rod 10 and the second vertical rod 20. Therefore, the position of the cross bar 30 relative to the first vertical rod 10 and the second vertical rod 20 can be changed according to the actual needs of the user by rotating the operating member 61 and the rotating actuator 62, thereby enriching the usage scenarios of the support structure 100 of the table and chair.

[0037] In particular, if Figure 3 As shown, the first limit block 41 is arranged at the top of the other end of the first transmission member 43, the second limit block 51 is arranged at the top of the other end of the second transmission member 53, and the part of the first transmission member 43 adjacent to its other end and the part of the second transmission member 53 adjacent to its other end are arranged side by side and located at the bottom of the rotating actuator 62.

[0038] That is to say, the first limit block 41 is located at the right end of the first transmission member 43, and the second limit block 51 is located at the left end of the second transmission member 53. The first limit block 41 and the second limit block 51 are arranged adjacent to each other, and the first limit groove and the second limit groove are respectively located on the left and right sides of the rotary actuator 62, so as to facilitate the limiting cooperation between the first limit block 41 and the first limit groove, and the limiting cooperation between the second limit block 51 and the second limit groove. Moreover, the first limit block 41 and the second limit block 51 are close to the bottom of the rotary actuator 62, and the rotary operating member 61 is connected to the top of the rotary actuator 62. This arrangement facilitates the rotary actuator 62 to control the first locking mechanism 40 and the second locking mechanism 50 at the same time, so that the user can control the rotary operating member 61 and the rotary actuator 62 to lock or unlock the first locking mechanism 40 and the second locking mechanism 50, thereby enriching the use scenarios of the support structure 100 of the table and chair, and improving the utilization rate of the support structure 100 of the table and chair.

[0039] In addition, the first vertical rod 10 is provided with multiple vertically spaced first locking holes, and the first locking member 42 is locked in any one of the first locking holes; the second vertical rod 20 is provided with multiple vertically spaced second locking holes, and the second locking member 52 is locked in any one of the second locking holes.

[0040] It can be understood that a plurality of first locking holes are set on the right side of the first vertical rod 10, a part of the first locking holes are evenly arranged along the middle of the length direction of the first vertical rod 10, and another part of the first locking holes are arranged close to the bottom of the first vertical rod 10, and a plurality of second locking holes are set on the left side of the second vertical rod 20, a part of the second locking holes are evenly arranged along the middle of the length direction of the second vertical rod 20, and another part of the second locking holes are arranged close to the bottom of the second vertical rod 20, and the plurality of first locking holes and the plurality of second locking holes are arranged relative to each other on the left and right, so as to facilitate the horizontal arrangement of the cross bar 30 between the first vertical rod 10 and the second vertical rod 20. For example, when the horizontal bar 30 is respectively locked with the first locking hole and the second locking hole in the middle of the first vertical bar 10 and the second vertical bar 20, a cushion is set on the horizontal bar 30, so that the user can sit on the support structure 100 of the table and chair. When the horizontal bar 30 is respectively locked with the first locking hole and the second locking hole at the bottom of the first vertical bar 10 and the second vertical bar 20, a footrest is set on the horizontal bar 30, so that the user can step on the support structure 100 of the table and chair, thereby enriching the usage scenarios of the support structure 100 of the table and chair.

[0041] In addition, if Figure 3As shown, the first locking mechanism 40 also includes: a first elastic member 44, the first elastic member 44 abuts between the first locking member 42 and the cross bar 30, thereby providing the first locking member 42 with a locking force to lock the corresponding first vertical bar 10; the second locking mechanism 50 also includes: a second elastic member 54, the second elastic member 54 abuts between the second locking member 52 and the cross bar 30, thereby providing the second locking member 52 with a locking force to lock the corresponding second vertical bar 20.

[0042] That is to say, the first elastic member 44 is located between the first locking member 42 and the left end of the cross bar 30, so that the first elastic member 44 can fill the gap between the first locking member 42 and the cross bar 30, so that the first elastic member 44 can provide a locking force to the first locking member 42, thereby facilitating locking or unlocking between the first locking member 42 and the first vertical bar 10, and the second elastic member 54 is located between the second locking member 52 and the right end of the cross bar 30, so that the second elastic member 54 can fill the gap between the second locking member 52 and the cross bar 30, so that the second elastic member 54 can provide a locking force to the second locking member 52, thereby facilitating locking or unlocking between the second locking member 52 and the second vertical bar 20.

[0043] In particular, Figure 2 As shown, a relief groove 31 is formed on the crossbar 30, and the rotary operating member 61 is disposed in the relief groove 31. It is understandable that the relief groove 31 is provided in the middle portion of the crossbar 30, and the rotary operating member 61 is located in the relief groove 31. This arrangement allows the rotary operating member 61 to be in the relief groove 31 when not in use, thereby preventing the rotary operating member 61 from interfering with the use of the crossbar 30. When the rotary operating member 61 is in use, the rotary operating member 61 is disengaged from the relief groove 31, thereby facilitating the user's use of the rotary operating member 61 and further facilitating the movement of the crossbar 30 relative to the first vertical rod 10 and the second vertical rod 20.

[0044] In addition, Figure 2 As shown, the crossbar 30 is provided with a limit portion 32, and the rotary operating member 61 is restrained and engaged with the limit portion 32 when it is rotated to the limit position. In other words, the limit portion 32 is provided in the middle portion of the crossbar 30, and the limit portions 32 are arranged around the avoidance groove 31, and are arranged at a certain angular interval. In this way, when the rotary operating member 61 is rotated to the limit position, the edge of the rotary operating member 61 is restrained and engaged with the limit portion 32, thereby limiting the range of movement of the rotary operating member 61, and further facilitating the rotary operating member 61 to lock or unlock the first locking mechanism 40 and the second locking mechanism 50.

[0045] The table and chair according to the present invention includes the support structure 100 of the table and chair of the above embodiment. By providing a first locking mechanism 40, a second locking mechanism 50, and an unlocking mechanism 60 on the crossbar 30, the crossbar 30 can be selectively locked and unlocked relative to the first vertical rod 10 and the second vertical rod 20. That is, the crossbar 30 can be selectively stationary or movable relative to the first vertical rod 10 and the second vertical rod 20, thereby limiting the position of the crossbar 30 according to the actual needs of the user, thereby enriching the use scenarios of the support structure 100 of the table and chair and improving the utilization rate of the support structure 100 of the table and chair.

[0046] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation to the present invention.

[0047] In the description of the present invention, "first feature" and "second feature" may include one or more of the features. In the description of the present invention, "plurality" means two or more. In the description of the present invention, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or may also include the first and second features not being in direct contact but being in contact via another feature between them. In the description of the present invention, the first feature being "above", "above" and "above" the second feature includes the first feature being directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature.

[0048] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "example," "specific example," or "some examples" means that a specific feature, structure, material, or characteristic described in conjunction with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.

[0049] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and purpose of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A support structure (100) for tables and chairs, characterized in that: include: A first vertical rod (10) and a second vertical rod (20), wherein the first vertical rod (10) and the second vertical rod (20) are arranged opposite to each other in the transverse direction; a crossbar (30), the crossbar (30) being disposed between the first vertical bar (10) and the second vertical bar (20) and being movable vertically relative to the first vertical bar (10) and the second vertical bar (20); a first locking mechanism (40) and a second locking mechanism (50), wherein the first locking mechanism (40) and the second locking mechanism (50) are both movably arranged on the crossbar (30), the first locking mechanism (40) locks the corresponding first vertical bar (10) and the second locking mechanism (50) locks the corresponding second vertical bar (20); An unlocking mechanism (60) is rotatably arranged on the crossbar (30), and the unlocking mechanism (60) is respectively coupled with the first locking mechanism (40) and the second locking mechanism (50) in a transmission manner to selectively and synchronously unlock the first vertical rod (10) and the second vertical rod (20).

2. The support structure (100) of tables and chairs according to claim 1, characterized in that: The unlocking mechanism (60) comprises: Rotating operating member (61); A rotary actuator (62) is connected to the rotary operating member (61) and is rotatably arranged on the crossbar (30). The rotary actuator (62) is respectively in transmission cooperation with the first locking mechanism (40) and the second locking mechanism (50).

3. The support structure (100) of tables and chairs according to claim 2, characterized in that: The rotary actuator (62) is provided with a first limiting groove and a second limiting groove that are laterally opposite to each other, wherein the first limiting groove is located on a side of the second limiting groove adjacent to the second vertical rod (20); The first locking mechanism (40) is provided with a first limiting block (41) and the second locking mechanism (50) is provided with a second limiting block (51), the first limiting block (41) is located on a side of the second limiting block (51) adjacent to the second vertical rod (20), the first limiting block (41) cooperates with the first limiting groove and the second limiting block (51) cooperates with the second limiting groove, and the rotating actuator (62) causes the first limiting block (41) to disengage from the first limiting groove and the second limiting block (51) to disengage from the second limiting groove by rotating.

4. The support structure (100) of tables and chairs according to claim 3, characterized in that: The first locking mechanism (40) comprises: a first locking member (42), the first locking member (42) locking the corresponding first vertical rod (10); a first transmission member (43), one end of the first transmission member (43) being connected to the first locking member (42), and the other end of the first transmission member (43) being provided with the first limiting block (41); The second locking mechanism (50) comprises: a second locking member (52), the second locking member (52) locking the corresponding second vertical rod (20); A second transmission member (53), one end of the second transmission member (53) is connected to the second locking member (52), and the other end of the second transmission member (53) is provided with the second limiting block (51).

5. The support structure (100) of tables and chairs according to claim 4, characterized in that: The first limit block (41) is arranged at the top of the other end of the first transmission member (43), the second limit block (51) is arranged at the top of the other end of the second transmission member (53), and the portion of the first transmission member (43) adjacent to the other end thereof and the portion of the second transmission member (53) adjacent to the other end thereof are arranged side by side and are located at the bottom of the rotary actuator (62).

6. The support structure (100) of tables and chairs according to claim 4, characterized in that: The first vertical rod (10) is provided with a plurality of vertically spaced first locking holes, and the first locking member (42) is locked in any one of the first locking holes; The second vertical rod (20) is provided with a plurality of vertically spaced second locking holes, and the second locking member (52) is locked in any one of the second locking holes.

7. The support structure (100) of tables and chairs according to claim 4, characterized in that: The first locking mechanism (40) further comprises: a first elastic member (44), the first elastic member (44) being in contact between the first locking member (42) and the cross bar (30) to provide the first locking member (42) with a locking force to lock the corresponding first vertical bar (10); The second locking mechanism (50) further comprises: A second elastic member (54), the second elastic member (54) abuts between the second locking member (52) and the cross bar (30) to provide the second locking member (52) with a locking force to lock the corresponding second vertical bar (20).

8. The support structure (100) of tables and chairs according to claim 2, characterized in that: An avoidance groove (31) is formed on the crossbar (30), and the rotary operating member (61) is arranged in the avoidance groove (31).

9. The support structure (100) of tables and chairs according to claim 2, characterized in that: The crossbar (30) is provided with a limiting portion (32), and the rotary operating member (61) is engaged with the limiting portion (32) when it is rotated to the limit position.

10. A table and chair, characterized in that: include: The support structure (100) of a table and chair according to any one of claims 1 to 9.

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