Child dining chair capable of being quickly folded

Abstract

The invention discloses a child dining chair capable of being quickly folded, which comprises front legs, rear legs, a seat plate, a dinner plate and a backrest, and rotary joints for rotationally connecting the front legs, the rear legs, the seat plate, the dinner plate and the backrest are arranged among the front legs, the rear legs, the seat plate, the dinner plate and the backrest. The locking mechanism is used for unlocking and locking the front foot, the rear foot, the seat plate and the dinner plate, and the angle adjusting mechanism is used for locking and unlocking and adjusting the angle of the backrest. The storage box has the advantage that the storage box can be stored more conveniently.

Description

Technical Field

[0001] The invention relates to the technical field of children's dining chairs, and in particular to a children's dining chair that can be quickly folded. Background Art

[0002] There are some shortcomings in the design of children's dining chairs on the market, especially in terms of portability and storage. Traditional children's dining chairs are usually equipped with a fixed dining tray. This design makes the dining chair still large in size after folding, occupying a large storage space, which brings many inconveniences to the family's storage and carrying, such as difficulty in putting it in the trunk of a car or a small storage room. In order to solve this problem, some manufacturers have developed children's dining chairs with foldable dining trays. However, these improvement schemes also have defects. The existing design of foldable dining trays usually requires users to perform separate operations, that is, the folding process of the dining tray and the folding process of the dining chair body are independent of each other, and are not synchronized or linked. This results in users having to perform multiple steps when storing the dining chair: first, the dining tray needs to be disassembled or folded, and then the dining chair body is folded. This cumbersome operation undoubtedly increases the user's burden of use, especially when the dining chair needs to be frequently stored and unfolded, such as when tidying up after daily meals or carrying it out, this non-linked folding design will be particularly inconvenient and reduce the user experience.

[0003] Therefore, it is necessary to further improve and perfect the prior art to overcome these shortcomings, and the present invention is made based on this situation. Summary of the invention

[0004] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a children's dining chair that can be stored more conveniently.

[0005] The present invention is achieved through the following technical solutions:

[0006] In order to solve the above technical problems, the present invention provides a children's dining chair that can be quickly folded, including front legs, rear legs, a seat panel, a dining tray and a backrest, and a rotating joint is provided between the front legs, rear legs, seat panel, dining tray and backrest to rotatably connect them together, and the rotating joint is connected to a locking mechanism for unlocking and locking the front legs, rear legs, seat panel and dining tray, and an angle adjustment mechanism for locking and unlocking and adjusting the angle of the backrest.

[0007] In order to further solve the technical problem to be solved by the present invention, the present invention provides a quickly foldable children's dining chair, wherein the dining tray comprises a dining tray frame, a dining tray body arranged on the dining tray frame, and a plurality of front support rods and rear support rods movably connected between the dining tray frame and the seat plate, and the lower end of the front support rod is rotatably connected to the front part of the seat plate, the upper end of the front support rod is rotatably connected to the front part of the dining tray frame, and the upper end of the rear support rod is rotatably connected to the rear part of the dining tray frame;

[0008] The rotating joint includes a front foot rotating seat arranged at the upper end of the front foot, a rear foot rotating seat arranged at the upper end of the rear foot, a dining plate rotating seat arranged at the lower end of the rear support rod, a seat plate rotating seat arranged on the seat plate, and a backrest rotating seat arranged at the lower end of the backrest, and the front foot rotating seat, the rear foot rotating seat, the dining plate rotating seat, the seat plate rotating seat and the backrest rotating seat are rotatably connected together.

[0009] In order to further solve the technical problem to be solved by the present invention, in a quickly foldable children's dining chair provided by the present invention, the locking mechanism includes a locking seat fixed relative to the seat plate rotating seat, a first locking structure for limiting the rotation of the dining plate rotating seat is provided between the locking seat and the dining plate rotating seat, a second locking structure for limiting the rotation of the rear leg rotating seat is provided between the locking seat and the rear leg rotating seat, and a third locking structure for limiting the relative rotation of the front leg rotating seat and the rear leg rotating seat is provided between the locking seat and the front leg rotating seat and the rear leg rotating seat.

[0010] In order to further solve the technical problem to be solved by the present invention, in a quickly foldable children's dining chair provided by the present invention, the first locking structure includes a slider slidably connected to the lock seat, the slider is provided with a first insertion tongue, the dining plate rotating seat is provided with a plurality of first slots into which the first insertion tongue can be inserted to limit the rotation of the dining plate rotating seat, a first return spring is provided between the slider and the lock seat for elastically pressing the first insertion tongue in the direction of the first slot, the slider is connected to a first pulling rope, and the other end of the first pulling rope is connected to a first unlocking button.

[0011] In order to further solve the technical problem to be solved by the present invention, in a quickly foldable children's dining chair provided by the present invention, the second locking structure includes a second tongue arranged on the slider, and the rear leg rotating seat is provided with a second slot for the second tongue to be inserted.

[0012] In order to further solve the technical problem to be solved by the present invention, in a quickly foldable children's dining chair provided by the present invention, the third locking structure includes a first spline groove provided on the front leg rotating seat, a second spline groove provided on the rear leg rotating seat, a spline provided between the first spline groove and the second spline groove, and a second return spring pressing the spline in the direction of the second spline groove, the spline is provided with a circle of shallow grooves, the shallow groove is provided with a deep groove, and the lock seat is provided with a tongue that can slide in the shallow groove and the deep groove as it rotates; when the tongue is in the shallow groove, the spline is disengaged from the first spline groove and is only in the second spline groove, and when the tongue is in the deep groove, the spline is simultaneously inserted into the first spline groove and the second spline groove.

[0013] In order to further solve the technical problem to be solved by the present invention, in a quickly foldable children's dining chair provided by the present invention, the dining tray body is detachably connected to the dining tray frame through a quick-release structure.

[0014] In order to further solve the technical problem to be solved by the present invention, the present invention provides a quickly foldable children's dining chair, wherein the quick-release structure includes a plurality of latching tongues provided on the dining tray body, and a plurality of latching grooves provided on the dining tray frame for the corresponding latching tongues to be inserted into. A second unlocking button is also slidably connected to the dining tray body, and a locking groove is provided on the dining tray frame for the second unlocking button to be inserted into. A third return spring is provided between the second unlocking button and the dining tray body for elastically pressing the second unlocking button in the direction of the locking groove.

[0015] In order to further solve the technical problem to be solved by the present invention, in a quickly foldable children's dining chair provided by the present invention, the cross-sections of the latch tongue and the lock groove are both T-shaped.

[0016] In order to further solve the technical problem to be solved by the present invention, in a quickly foldable children's dining chair provided by the present invention, the angle adjustment mechanism is a locking disk fixed relative to the seat plate rotating seat, the locking disk is provided with a long arc opening and a plurality of short gear openings, the backrest is slidably connected with an adjustment block which can extend toward and insert into the long arc opening and the short gear opening, and when the adjustment block is inserted into the long arc opening, the backrest can still rotate in the folding direction, a fourth return spring is provided between the adjustment block and the backrest for pressing the adjustment block against the locking disk, the adjustment block is connected with a second pulling rope, and the other end of the second pulling rope is connected with an adjustment knob slidably connected to the backrest.

[0017] Compared with the prior art, the present invention has the following advantages:

[0018] In a quickly foldable children's dining chair provided by the present invention, a dining tray is involved in the overall folding process of the dining chair, and the folding of the dining tray and the dining chair are linked by a rotating joint, a locking mechanism, and a connection design between the dining tray and the seat plate, thereby simplifying the folding steps, improving the folding efficiency, and making the folded dining chair smaller and more space-saving, while taking into account safety, stability, and ease of cleaning. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The specific embodiments of the present invention are further described in detail below with reference to the accompanying drawings, wherein:

[0020] Figure 1 It is a three-dimensional structural diagram of a children's dining chair;

[0021] Figure 2 This is a disassembled diagram of a children's dining chair;

[0022] Figure 3It is an exploded schematic diagram of a revolute joint;

[0023] Figure 4 It is a three-dimensional structural diagram of the lock seat and spline;

[0024] Figure 5 It is a three-dimensional structural diagram of the rear foot rotating seat, the dining plate rotating seat and the sliding block;

[0025] Figure 6 It is a diagram of the breakdown of the dinner plate;

[0026] Figure 7 This is a schematic diagram of the folding process of a children's dining chair;

[0027] Figure 8 This is a schematic diagram of a children's dining chair after it is fully folded. DETAILED DESCRIPTION

[0028] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0029] The present invention provides a children's dining chair that can be folded quickly, and the folding of the dining tray is linked with the overall folding process of the dining chair, which is more convenient.

[0030] like Figures 1 to 8 As shown, the children's dining chair of this embodiment includes a front leg 1, a rear leg 2, a seat plate 3, a dining tray 4 and a backrest 5. The front leg 1, the rear leg 2, the seat plate 3, the dining tray 4 and the backrest 5 are rotatably connected through a rotary joint 6. The rotary joint 6 is connected with a locking mechanism 7 and an angle adjustment mechanism 8. The locking mechanism 7 is used to lock and unlock the front leg 1, the rear leg 2, the seat plate 3 and the dining tray 4 to realize the unfolding and folding of the dining chair. The angle adjustment mechanism 8 is used to lock and unlock the backrest 5 and adjust the angle of the backrest 5.

[0031] The dining tray 4 participates in the overall folding process of the dining chair. Specifically, the dining tray 4 includes a dining tray frame 41, a dining tray body 42 disposed on the dining tray frame 41, and a plurality of front support rods 43 and rear support rods 44 movably connected between the dining tray frame 41 and the seat plate 3. The lower end of the front support rod 43 is rotatably connected to the front of the seat plate 3, and the upper end is rotatably connected to the front of the dining tray frame 41. The upper end of the rear support rod 44 is rotatably connected to the rear of the dining tray frame 41.

[0032] It is worth noting that the dining tray frame 41, the front support rod 43, the rear support rod 44 and the seat plate 3 form a four-bar linkage. As long as the rear support rod 44 is unlocked and rotated, the dining tray 4 can be folded.

[0033] The specific structure of the rotary joint 6 is as follows: a front foot rotary seat 61 is provided at the upper end of the front foot 1, a rear foot rotary seat 62 is provided at the upper end of the rear foot 2, a dining plate rotary seat 63 is provided at the lower end of the rear support rod 44, a seat plate rotary seat 64 is provided on the seat plate 3, and a backrest rotary seat 65 is provided at the lower end of the backrest 5. The front foot rotary seat 61, the rear foot rotary seat 62, the dining plate rotary seat 63, the seat plate rotary seat 64 and the backrest rotary seat 65 are rotatably connected to each other, so that the front foot, the rear foot, the dining plate, the seat plate and the backrest can be folded and unfolded around the rotary joint.

[0034] The locking mechanism 7 includes a locking seat 71 fixed relative to the seat plate rotating seat 64. A first locking structure is provided between the locking seat 71 and the plate rotating seat 63, for limiting the rotation of the plate rotating seat 63; a second locking structure is provided between the locking seat 71 and the rear foot rotating seat 62, for limiting the rotation of the rear foot rotating seat 62; a third locking structure is provided between the locking seat 71 and the front foot rotating seat 61 and the rear foot rotating seat 62, for limiting the relative rotation of the front foot rotating seat 61 and the rear foot rotating seat 62.

[0035] like Figure 3 As shown, the first locking structure includes a slider 72 slidably connected to the lock seat 71, and the slider 72 is provided with a first tongue 721. The dining plate rotating seat 63 is provided with a plurality of first slots 631 for the first tongues 721 to be inserted into, thereby limiting the rotation of the dining plate rotating seat 63. A first return spring 73 is provided between the slider 72 and the lock seat 71, which is used to elastically press the first tongue 721 to the direction of the first slot 631. The slider 72 is connected to a first pull rope 74, and the other end of the first pull rope 74 is connected to a first unlocking button 75. Pressing the first unlocking button 75 can drive the first tongue 721 to disengage from the corresponding first slot 631, thereby unlocking the dining plate rotating seat 63 so that it can rotate.

[0036] like Figure 5 As shown, the second locking structure includes a second tongue 722 disposed on the slider 72, and the rear foot rotating seat 62 is provided with a second slot 621 for the second tongue 722 to be inserted into. Pressing the first unlocking button 75 can simultaneously drive the second tongue 722 to disengage from the corresponding second slot 621, thereby unlocking the rear foot rotating seat 62 to enable it to rotate.

[0037] It is worth noting that the first unlocking button 75 and the slider 72 can be used for multiple purposes, and can be used to unlock the first locking structure, as well as the second locking structure.

[0038] like Figure 3-4As shown, the third locking structure includes a first spline groove 611 provided on the front foot rotating seat 61, a second spline groove 622 provided on the rear foot rotating seat 62, a spline 76 provided between the first spline groove 611 and the second spline groove 622, and a second return spring 77 for pressing the spline 76 to the direction of the second spline groove 622. The spline 76 is provided with a circle of shallow grooves 761, and the shallow grooves 761 are provided with deep grooves 762. The lock seat 71 is provided with a top tongue 711, which can rotate with the lock seat 71 and slide in the shallow grooves 761 and the deep grooves 762. When the top tongue 711 is located in the shallow groove 761, the spline 76 is separated from the first spline groove 611 and is only in the second spline groove 622; when the top tongue 711 is located in the deep groove 762, the spline 76 is inserted into the first spline groove 611 and the second spline groove 622 at the same time, so as to limit the relative rotation of the two.

[0039] Preferably, Figure 6 As shown, the plate body 42 is detachably connected to the plate frame 41 through a quick release structure. The quick release structure includes a plurality of latching tongues 421 arranged on the plate body 42, and a plurality of latching grooves 411 arranged on the plate frame 41 for corresponding latching tongues 421 to be inserted. A second unlocking button 45 is slidably connected to the plate body 42, and a locking groove 412 is provided on the plate frame 41 for the second unlocking button 45 to be inserted. A third return spring 46 is provided between the second unlocking button 45 and the plate body 42, for elastically pressing the second unlocking button 45 to the direction of the locking groove 412.

[0040] Further preferably, the cross sections of the latch tongue 421 and the locking groove 412 are both T-shaped.

[0041] like Figure 3 As shown, the angle adjustment mechanism 8 includes a locking disk 81 fixed relative to the seat plate rotating seat 64. A long arc-shaped opening 811 and a plurality of short gear openings 812 are provided on the side wall of the locking disk 81. An adjusting block 82 is slidably connected to the backrest 5, and the adjusting block 82 can extend toward and be inserted into the long arc-shaped opening 811 and the short gear opening 812. When the adjusting block 82 is inserted into the long arc-shaped opening 811, the backrest 5 can still rotate in the folding direction. When the adjusting block 82 is inserted into different short gear openings 812, the backrest 5 is at different unfolding angles. A fourth reset spring 83 is provided between the adjusting block 82 and the backrest 5, which is used to press the adjusting block 82 to the direction of the locking disk 81. A second pulling rope 84 is connected to the adjusting block 82, and the other end of the second pulling rope 84 is connected to an adjusting knob 85 slidably connected to the backrest 5.

[0042] The main innovation of the present invention is that the dining tray 4 participates in the overall folding process of the dining chair, and the folding of the dining tray and the dining chair are linked by the rotating joint 6, the locking mechanism 7 and the connection between the dining tray and the seat plate.

[0043] The advantages brought about by this are mainly reflected in the following aspects:

[0044] 1) Convenient folding: Since the folding of the dining tray 4 is linked to the overall folding of the dining chair, the user does not need to operate the dining tray separately, thereby simplifying the folding steps, greatly improving the folding efficiency, and being more convenient and quick.

[0045] 2) Save space: After the dining plate is folded, the overall folded dining chair is smaller in size, saving more storage space and making it easier to store and carry at home.

[0046] 3) Compact structure: Through reasonable design of rotating joints and connection structures, the dining chair remains stable in the unfolded state, and the structure is compact in the folded state, avoiding looseness and collision of parts.

[0047] 4) Improved safety: The design of the locking mechanism 7 can effectively lock various components of the dining chair, including the dining tray, to ensure the stability and safety of the dining chair during use and prevent accidents.

[0048] 5) Easy to clean: The detachable dining tray body 42 is convenient for the user to clean and maintain, thereby improving the hygienic performance of the dining chair.

[0049] In summary, the present invention provides a children's dining chair that can be folded quickly. By linking the folding of the dining tray with the overall folding process of the dining chair, the problem of complicated folding and large size of the dining chair in the prior art is effectively solved, and the user experience is significantly improved.

[0050] Without departing from the spirit and scope of the present invention, those skilled in the art may make various modifications and improvements to the above embodiments. For example, the specific structures of the quick-release structure, the locking mechanism, and the angle adjustment mechanism may adopt other equivalent solutions. These modifications and improvements should be considered to fall within the scope of protection of the present invention.

Claims

1. A quickly foldable children's dining chair, characterized by: The utility model comprises a front foot (1), a rear foot (2), a seat plate (3), a dining plate (4) and a backrest (5); a rotating joint (6) is provided between the front foot (1), the rear foot (2), the seat plate (3), the dining plate (4) and the backrest (5) for rotatably connecting the front foot (1), the rear foot (2), the seat plate (3), the dining plate (4) and the backrest (5); the rotating joint (6) is connected to a locking mechanism (7) for unlocking and locking the front foot (1), the rear foot (2), the seat plate (3) and the dining plate (4); and an angle adjustment mechanism (8) for locking and unlocking and adjusting the angle of the backrest (5).

2. The quickly foldable children's dining chair according to claim 1, characterized in that: The dining tray (4) comprises a dining tray frame (41), a dining tray body (42) arranged on the dining tray frame (41), and a plurality of front support rods (43) and rear support rods (44) movably connected between the dining tray frame (41) and the seat plate (3), wherein the lower end of the front support rod (43) is rotatably connected to the front part of the seat plate (3), the upper end of the front support rod (43) is rotatably connected to the front part of the dining tray frame (41), and the upper end of the rear support rod (44) is rotatably connected to the rear part of the dining tray frame (41); The rotary joint (6) comprises a front foot rotary seat (61) arranged at the upper end of the front foot (1), a rear foot rotary seat (62) arranged at the upper end of the rear foot (2), a dining plate rotary seat (63) arranged at the lower end of the rear support rod (44), a seat plate rotary seat (64) arranged on the seat plate (3), and a backrest rotary seat (65) arranged at the lower end of the backrest (5), and the front foot rotary seat (61), the rear foot rotary seat (62), the dining plate rotary seat (63), the seat plate rotary seat (64) and the backrest rotary seat (65) are rotatably connected together.

3. The quickly foldable children's dining chair according to claim 2, characterized in that: The locking mechanism (7) comprises a locking seat (71) fixed relative to the seat plate rotating seat (64); a first locking structure for limiting the rotation of the plate rotating seat (63) is provided between the locking seat (71) and the dining plate rotating seat (63); a second locking structure for limiting the rotation of the rear foot rotating seat (62) is provided between the locking seat (71) and the rear foot rotating seat (62); and a third locking structure for limiting the relative rotation of the front foot rotating seat (61) and the rear foot rotating seat (62) is provided between the locking seat (71) and the front foot rotating seat (61) and the rear foot rotating seat (62).

4. The quickly foldable children's dining chair according to claim 3, characterized in that: The first locking structure comprises a slider (72) slidably connected to the lock seat (71), the slider (72) being provided with a first plug tongue (721), the dining plate rotating seat (63) being provided with a plurality of first slots (631) into which the first plug tongues (721) can be inserted so as to limit the rotation of the dining plate rotating seat (63), a first return spring (73) being provided between the slider (72) and the lock seat (71) for elastically pressing the first plug tongue (721) toward the first slot (631), the slider (72) being connected with a first pulling rope (74), and the other end of the first pulling rope (74) being connected with a first unlocking button (75).

5. The quickly foldable children's dining chair according to claim 4, characterized in that: The second locking structure comprises a second inserting tongue (722) arranged on the sliding block (72), and the rear foot rotating seat (62) is provided with a second slot (621) into which the second inserting tongue (722) can be inserted.

6. A quickly foldable children's dining chair according to claim 3 or 5, characterized in that: The third locking structure comprises a first spline groove (611) provided on the front foot rotating seat (61), a second spline groove (622) provided on the rear foot rotating seat (62), a spline (76) provided between the first spline groove (611) and the second spline groove (622), and a second return spring (77) for pressing the spline (76) toward the second spline groove (622), wherein the spline (76) is provided with a circle of shallow grooves (761), and a spring (761) is provided in the shallow grooves (761). The lock seat (71) has a deep groove (762), and a top tongue (711) is provided on the lock seat (71) and can slide in the shallow groove (761) and the deep groove (762) as the lock seat (71) rotates; when the top tongue (711) is in the shallow groove (761), the spline (76) is separated from the first spline groove (611) and is only in the second spline groove (622); when the top tongue (711) is in the deep groove (762), the spline (76) is simultaneously inserted into the first spline groove (611) and the second spline groove (622).

7. The quickly foldable children's dining chair according to claim 2, characterized in that: The dinner plate body (42) is detachably connected to the dinner plate frame (41) via a quick-release structure.

8. The quickly foldable children's dining chair according to claim 7, characterized in that: The quick-release structure comprises a plurality of latching tongues (421) arranged on the dinner plate body (42), and a plurality of latching grooves (411) arranged on the dinner plate frame (41) into which the corresponding latching tongues (421) can be inserted; a second unlocking button (45) is also slidably connected to the dinner plate body (42); a locking groove (412) is arranged on the dinner plate frame (41) into which the second unlocking button (45) can be inserted; and a third return spring (46) is arranged between the second unlocking button (45) and the dinner plate body (42) to elastically press the second unlocking button (45) in the direction of the locking groove (412).

9. The quickly foldable children's dining chair according to claim 8, characterized in that: The cross sections of the latch tongue (421) and the locking groove (412) are both T-shaped.

10. The quickly foldable children's dining chair according to claim 2, characterized in that: The angle adjustment mechanism (8) comprises a locking plate (81) fixed relative to the seat plate rotating seat (64); the locking plate (81) is provided with a long arc-shaped opening (811) and a plurality of short gear openings (812); the backrest (5) is slidably connected with an adjustment block (82) which can extend toward and be inserted into the long arc-shaped opening (811) and the short gear opening (812); when the adjustment block (82) is inserted into the long arc-shaped opening (811), the backrest (5) can still rotate in the folding direction; a fourth return spring (83) is provided between the adjustment block (82) and the backrest (5) for pressing the adjustment block (82) toward the locking plate (81); the adjustment block (82) is connected with a second pulling rope (84); the other end of the second pulling rope (84) is connected with an adjustment knob (85) slidably connected to the backrest (5).

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