An installation-free foldable learning chair

Abstract

The utility model discloses a kind of installation-free foldable study chair, including two side front legs, front leg is equipped with upper crossbeam between, upper crossbeam is rotatably installed with cushion by rotating assembly, cushion is locked by locking assembly after overturning to use state relative to upper crossbeam;The upper part of front leg is equipped with rear leg by rotating locking mechanism, rear leg is folded by rotating locking mechanism towards front leg;By rotating and folding towards front leg of cushion relative to upper crossbeam, rear leg is also folded by rotating towards front leg, to realize the folding of study chair, occupy smaller space, convenient to packing and transportation;After receiving goods, cushion, rear leg can be respectively rotated out relative to front leg, respectively locked and then can be used, convenient to operate, eliminates the existing assembly process, saves time and energy, and good practicability.

Description

Technical Field

[0001] This utility model relates to the field of study chair technology, and in particular to a foldable study chair that requires no installation. Background Technology

[0002] A study chair is a chair specifically designed for studying, working, or prolonged sitting. It is typically ergonomically designed to provide a comfortable seat and support to help users maintain correct posture, reduce lumbar pressure, and prevent discomfort or injury caused by incorrect posture.

[0003] In the current technology, in order to facilitate transportation, most study chairs are of the assembly structure. Consumers purchase them online, and after receiving them, they need to learn how to assemble them themselves according to the installation steps, which is quite cumbersome and time-consuming. Utility Model Content

[0004] To address the aforementioned issues, this application provides a structurally sound, installation-free, foldable study chair. This design allows the study chair to be folded, occupying minimal space and facilitating packaging and transportation. The folding and unfolding process is convenient and quick, eliminating the need for existing assembly processes, saving time and effort, and offering excellent practicality.

[0005] The technical solution adopted in this utility model is as follows:

[0006] A foldable study chair that requires no installation includes two front legs, an upper crossbeam between the front legs, a seat cushion mounted on the upper crossbeam via a rotating assembly, and the seat cushion being locked in place by a locking assembly after being flipped relative to the upper crossbeam to a working state; a rear leg is mounted on the upper part of the front legs via a rotating locking mechanism, and the rear leg is folded towards the front legs via the rotating locking mechanism.

[0007] As a further improvement to the above technical solution:

[0008] The rotating assembly includes a rotating seat, which is rotatably mounted on the upper crossbeam. A slide is installed on the end face of the rotating seat, and the slide is supported and fitted on the bottom surface of the seat. The locking assembly includes a fixed seat welded to the upper crossbeam, and a locking element is threaded through the fixed seat and towards the slide.

[0009] The bottom surface of the seat cushion is equipped with a sliding support, and the slide is slidably mounted on the sliding support. The slide is provided with a threaded hole for the locking element to pass through and lock. After the locking element passes through the threaded hole, it abuts against the sliding support.

[0010] A connector is installed on the upper part of the front support leg. The connector extends rearward to form a support arm. The rear end of the support arm is engaged with the upper end of the rear support leg to form an internal space for installing a rotation locking mechanism.

[0011] The rotating locking mechanism comprises a locking block, with the rear support leg and support arm having concave surfaces that form groove 1 and groove 2, respectively, which are adapted to the shape of the locking block. The depth of groove 1 is less than the thickness of the locking block, and the depth of groove 2 is greater than the thickness of the locking block. An elastic element is press-fitted between the bottom surface of groove 2 and the locking block, and the elastic element drives the locking block to move toward groove 1. The mechanism also includes an unlocking element, which penetrates into groove 1 and abuts against the side of the locking block, and the unlocking element pushes the locking block away from groove 1.

[0012] The center of the first tooth groove is recessed to form a countersunk hole, and the center of the second tooth groove extends toward the countersunk hole and is fitted with a central column; a through hole is opened on the first tooth groove, and an extension rod and a hook are formed on the side of the unlocking component. The unlocking component is fastened to the side of the rear support leg, and the hook is locked after passing through the through hole through the extension rod.

[0013] The support arm and the rear support leg are respectively recessed to form a fitting surface. The support arm is mounted on the outside of the rear support leg, and the shape of the mounted support arm and the rear support leg are consistent.

[0014] The front outriggers are connected by a rear support at their top ends, and a backrest is mounted on the front side of the rear support via a sliding groove from top to bottom.

[0015] A lower crossbeam is installed between the front outriggers, and a pedal assembly is installed on the lower crossbeam. The pedal assembly is flipped and folded upward relative to the lower crossbeam.

[0016] The structure of the pedal assembly is as follows: it includes a pedal component, the bottom of which is fitted onto the lower crossbeam through an upper recessed hole; it also includes a fastening plate, the upper part of which is fitted onto the lower crossbeam through a lower recessed hole, and the fastening plate is locked and fixed to the pedal component; a limiting block is installed on the lower crossbeam located between the pedal component and the fastening plate, the upper edge of the limiting block abuts against the bottom surface of the pedal component or the lower edge of the limiting block abuts against the top surface of the fastening plate to form a limiting.

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

[0018] This invention achieves the folding of the study chair by rotating the seat cushion relative to the upper crossbeam and folding it toward the front support leg, while also rotating and folding the rear support leg toward the front support leg. This results in a smaller space occupied and is convenient for packaging and transportation. After receiving the product, the seat cushion and rear support leg can be rotated out relative to the front support leg and locked separately before use. The operation is convenient, eliminating the existing assembly process, saving time and effort, and is highly practical.

[0019] This utility model also has the following advantages:

[0020] The pedal assembly is rotatably mounted on the lower crossbeam of the front outrigger. By setting a limit block, the rotation angle of the pedal assembly relative to the front outrigger is limited, matching both the unfolded and folded states to meet actual usage needs. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the present invention in the folded state.

[0022] Figure 2 This is a schematic diagram of the present invention in its unfolded state.

[0023] Figure 3 This is a schematic diagram showing the assembly of the sliding support, rotating assembly, and locking assembly of this utility model.

[0024] Figure 4 This is a schematic diagram of the rotating locking mechanism of this utility model.

[0025] Figure 5 for Figure 4 A magnified view of a portion of point A in the middle.

[0026] Figure 6 for Figure 4 A magnified view of a section at point B.

[0027] Figure 7 This is a schematic diagram of the pedal assembly of this utility model.

[0028] The components include: 1. Front support leg; 2. Seat cushion; 3. Sliding support; 4. Locking assembly; 5. Rotating assembly; 6. Rear support; 7. Rear support leg; 8. Pedal assembly; 9. Rotating locking mechanism.

[0029] 11. Upper crossbeam; 12. Connecting piece; 13. Lower crossbeam; 120. Support arm; 121. Tooth groove two; 122. Center column; 131. Limiting block;

[0030] 41. Fixing base; 42. Locking element;

[0031] 51. Rotary seat; 52. Slide seat;

[0032] 60. Backrest; 61. Slide rail;

[0033] 71. Tooth groove one; 72. Through hole; 73. Countersunk hole;

[0034] 81. Pedal component; 82. Fastening plate; 811. Upper recessed hole; 821. Lower recessed hole;

[0035] 91. Unlocking component; 92. Locking block; 93. End cap; 911. Extension rod; 912. Hook. Detailed Implementation

[0036] The specific embodiments of this utility model are described below with reference to the accompanying drawings.

[0037] like Figure 1 and Figure 2As shown, this embodiment of a foldable study chair that requires no installation includes two front support legs 1, an upper crossbeam 11 installed between the front support legs 1, a seat cushion 2 mounted on the upper crossbeam 11 via a rotating assembly 5, and the seat cushion 2 being locked by a locking assembly 4 after being flipped relative to the upper crossbeam 11 to the use state; a rear support leg 7 is mounted on the upper part of the front support legs 1 via a rotating locking mechanism 9, and the rear support leg 7 is rotated and folded toward the front support legs 1 via the rotating locking mechanism 9.

[0038] In this embodiment, the seat cushion 2 is rotated relative to the upper crossbeam 11 and folded toward the front support leg 1, and the rear support leg 7 is also rotated and folded toward the front support leg 1, thereby realizing the folding of the study chair, occupying less space and facilitating packaging and transportation; after receiving the goods, the seat cushion 2 and the rear support leg 7 can be rotated out relative to the front support leg 1 respectively, and locked respectively before use, which is convenient to operate and eliminates the existing assembly process.

[0039] like Figure 3 As shown, the rotating assembly 5 includes a rotating seat 51, which is rotatably mounted on the upper crossbeam 11. A slide 52 is installed on the end face of the rotating seat 51, and the slide 52 is supported and fitted on the bottom surface of the seat cushion 2. The locking assembly 4 includes a fixed seat 41 welded to the upper crossbeam 11, and a locking member 42 is threaded through the fixed seat 41 toward the slide 52.

[0040] In this embodiment, the seat cushion 2 is rotated relative to the upper crossbeam 11 towards the fixed seat 41 along with the rotating seat 51. Then, the locking member 42 is used to lock the slide seat 52 to fix the seat cushion 2, so that the seat cushion 2 can be unfolded and used. When needed, the locking member 42 can be used to release the locking of the slide seat 52, so that the seat cushion 2 can rotate away from the fixed seat 41 and be folded.

[0041] A sliding support 3 is installed on the bottom surface of the seat cushion 2, and the slide 52 is slidably mounted on the sliding support 3. The slide 52 is provided with a threaded hole for the locking member 42 to pass through and lock. After the locking member 42 passes through the threaded hole, it abuts against the sliding support 3.

[0042] In this embodiment, the sliding support 3 forms the basis for the sliding block 52 to slide back and forth; in practice, the left and right edges of the sliding support 3 can be folded towards each other to form a sliding structure for the sliding block 52 to be fitted.

[0043] When the seat cushion 2 needs to be adjusted in front and back during use, release the locking member 42, apply force to the seat cushion 2, and cause the sliding support 3 and the slide 52 to move back and forth relative to each other until the seat cushion 2 moves to the preset position. Apply force to the locking member 42 so that the locking member 42 locks through the slide 52 and abuts against the sliding support 3. Thus, the abutment between the end of the locking member 42 and the sliding support 3 prevents the sliding between the slide 52 and the sliding support 3.

[0044] A connector 12 is installed on the upper part of the front outrigger 1. The connector 12 extends backward to form a support arm 120. The rear end of the support arm 120 is engaged with the upper end of the rear outrigger 7 to form the internal space for installing the rotation locking mechanism 9.

[0045] In this embodiment, the front support leg 1 is connected to the rear support leg 7 via the connector 12, and the rear support leg 7 is also connected to the rear support arm 120 extending backward. This not only achieves the connection between the upper part of the front support leg 1 and the rear support 6 and the rear support leg 7, but also helps to ensure the reliability of the overall structure after the front support leg 1 and the rear support leg 7 are spread apart.

[0046] like Figure 4 , Figure 5 and Figure 6 As shown, the structure of the rotating locking mechanism 9 is as follows: it includes a locking block 92, and the rear support leg 7 and the support arm 120 are respectively recessed inward to form a tooth groove 71 and a tooth groove 121 that are adapted to the shape of the locking block 92; the depth of the tooth groove 71 is less than the thickness of the locking block 92, and the depth of the tooth groove 121 is greater than the thickness of the locking block 92. An elastic element is pressed between the bottom surface of the tooth groove 121 and the locking block 92, and the elastic element drives the locking block 92 to move toward the tooth groove 71; it also includes an unlocking element 91, which penetrates into the tooth groove 71 and abuts against the side of the locking block 92, and the unlocking element 91 pushes the locking block 92 away from the tooth groove 71.

[0047] In this embodiment, the elastic element drives the locking block 92 to move toward the tooth groove 71, so that the locking block 92 is simultaneously fitted and accommodated in the tooth groove 71 and the tooth groove 121. The locking block 92 constitutes a lock for relative rotation between the rear support leg 7 and the support arm 120. Pressing the unlocking element 91 applies force to the locking block 92, overcoming the elastic force of the elastic element, and drives the locking block 92 to move toward the tooth groove 121 until the locking block 92 disengages from the tooth groove 71 and is completely accommodated in the tooth groove 121, thus unlocking the locking of the locking block 92. At this time, applying force to the rear support leg 7 can make it rotate relative to the support arm 120 and the front support leg 1, thereby realizing the folding of the rear support leg 7. Releasing the press on the unlocking element 91 can lock the folded leg by the locking block 92.

[0048] The center of the first tooth groove 71 is recessed to form a countersunk hole 73, and the center of the second tooth groove 121 extends toward the countersunk hole 73 and is fitted with a central post 122.

[0049] In this embodiment, the fitting of the center column 122 of the support arm 120 tooth groove 121 toward the countersunk hole 73 of the rear support leg 7 tooth groove 71 not only effectively improves the structural strength, but also provides structural support for the locking block 92, effectively ensuring the movement of the locking block 92 when switching between locking and unlocking.

[0050] A through hole 72 is provided on the tooth groove 71. An extension rod 911 and a hook 912 are formed on the side of the unlocking component 91. The unlocking component 91 is fastened and fitted to the side of the rear support leg 7. The hook 912 is locked in place after passing through the through hole 72 through the extension rod 911.

[0051] In this embodiment, the installation of the unlocking component 91 on the rear support leg 7 is achieved by setting the hook 912; the unlocking component 91 is able to move relative to the rear support leg 7 in the length direction of the extension rod 911 by setting the extension rod 911, so that the unlocking component 91 can smoothly apply force to the locking block 92.

[0052] The outrigger 120 and the rear outrigger 7 are respectively recessed to form a fitting surface. The outrigger 120 is mounted on the outside of the rear outrigger 7. After mounting, the outrigger 120 and the rear outrigger 7 are consistent in shape, effectively ensuring the aesthetic appearance.

[0053] In this embodiment, rivets can also be installed from the outside to the inside through the central column 122 of the support arm 120 toward the rear support leg 7 to form a movable riveting connection. While satisfying the requirement for the rear support leg 7 to rotate relative to the support arm 120, the structural installation reliability between the rear support leg 7 and the support arm 120 is effectively guaranteed.

[0054] In this embodiment, an end cap 93 can also be fitted on the outer side of the support arm 120 to cover the rivets and effectively ensure a consistent appearance; the end cap 93 can be snapped onto the support arm 120 using a buckle.

[0055] A rear support 6 is installed between the top ends of the connecting parts 12 of the front support leg 1. A backrest 60 is slidably fitted onto the front side of the rear support 6 from top to bottom via a sliding groove 61.

[0056] In this embodiment, when needed, such as during transportation, the backrest 60 can be removed from the rear support 6 via the slide 61; when in use, the backrest 60 can be mounted onto the rear support 6 from top to bottom along the slide 61; the operation is convenient.

[0057] A lower crossbeam 13 is installed between the front support legs 1, and a pedal assembly 8 is installed on the lower crossbeam 13. The pedal assembly 8 is flipped and folded upward relative to the lower crossbeam 13, thereby helping to reduce the space occupied by the study chair after folding.

[0058] like Figure 7 As shown, the structure of the pedal assembly 8 is as follows: it includes a pedal component 81, the bottom of which is fitted onto the lower crossbeam 13 through an upper recess 811; it also includes a fastening plate 82, the upper part of which is fitted onto the lower crossbeam 13 through a lower recess 821, and the fastening plate 82 is locked and fixed to the pedal component 81; a limiting block 131 is installed on the lower crossbeam 13 located between the pedal component 81 and the fastening plate 82, the upper edge of the limiting block 131 abuts against the bottom surface of the pedal component 81 or the lower edge of the limiting block 131 abuts against the top surface of the fastening plate 82 to form a limiting.

[0059] In this embodiment, the pedal assembly 8 is rotatably mounted on the lower crossbeam 13 of the front support leg 1. By setting the limiting block 131, the rotation angle of the pedal assembly 8 relative to the front support leg 1 is limited, matching both unfolded and folded states, thus meeting the actual usage requirements.

[0060] The method of using this utility model is as follows:

[0061] When transportation or folding is required, the locking assembly 4 is released from fixing the seat cushion 2, and force is applied to the seat cushion 2 to rotate it relative to the front support leg 1 and fold it; the rotation locking mechanism 9 is unlocked, and force is applied to the rear support leg 7 to rotate it toward the front support leg 1 and fold it; force is applied to the pedal assembly 8 to flip it upward relative to the front support leg 1 and fold it, thereby realizing the folding of the study chair, reducing space occupation, such as... Figure 1 As shown.

[0062] When unfolding is required, force is applied to the seat cushion 2 to make it flip forward relative to the front support leg 1, and after flipping to the preset position, it is locked and fixed by the locking component 4; the rotating locking mechanism 9 is unlocked, force is applied to the rear support leg 7 to make it rotate away from the front support leg 1 and unfold to the preset position, and it is locked and fixed by the rotating locking mechanism 9; force is applied to the pedal assembly 8 to make it flip forward relative to the front support leg 1 until it reaches the preset position of the limit; the backrest 60 is installed on the rear support 6 from top to bottom along the slide groove 61, thereby completing the unfolding of the study chair. Figure 2 As shown.

[0063] This invention enables the folding of a study chair, occupying less space and facilitating packaging and transportation; the operation from folding to unfolding is convenient and quick, eliminating the existing assembly process, saving time and effort, and making it highly practical.

[0064] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0065] The above description is an explanation of the present utility model and not a limitation thereof. The scope of the present utility model is defined by the claims. Within the protection scope of the present utility model, any form of modification may be made.

Claims

1. A foldable, installation-free study chair, characterized in that: It includes two front support legs (1), an upper crossbeam (11) is installed between the front support legs (1), a seat cushion (2) is installed on the upper crossbeam (11) via a rotating assembly (5), and the seat cushion (2) is locked by a locking assembly (4) after being flipped relative to the upper crossbeam (11) to the use state; a rear support leg (7) is installed on the upper part of the front support leg (1) via a rotating locking mechanism (9), and the rear support leg (7) is rotated and folded toward the front support leg (1) via the rotating locking mechanism (9).

2. The foldable, installation-free study chair as described in claim 1, characterized in that: The rotating assembly (5) includes a rotating seat (51), which is rotatably mounted on the upper crossbeam (11). A slide (52) is installed on the end face of the rotating seat (51), and the slide (52) is supported and fitted on the bottom surface of the seat cushion (2). The locking assembly (4) includes a fixed seat (41) welded to the upper crossbeam (11), and a locking element (42) is threaded through the fixed seat (41) and toward the slide (52).

3. The foldable, installation-free study chair as described in claim 2, characterized in that: The bottom surface of the cushion (2) is equipped with a sliding support (3), and the slide (52) is slidably mounted on the sliding support (3). The slide (52) is provided with a threaded hole for the locking member (42) to pass through and lock. After the locking member (42) passes through the threaded hole, it abuts against the sliding support (3).

4. The foldable, installation-free study chair as described in claim 1, characterized in that: The front support leg (1) is equipped with a connector (12) on its upper part. The connector (12) extends backward to form a support arm (120). The rear end of the support arm (120) is engaged with the upper end of the rear support leg (7) to form the internal space for installing the rotation locking mechanism (9).

5. The foldable, installation-free study chair as described in claim 4, characterized in that: The rotating locking mechanism (9) has the following structure: it includes a locking block (92), and the rear support leg (7) and the support arm (120) are respectively recessed to form a tooth groove 1 (71) and a tooth groove 2 (121) that are adapted to the shape of the locking block (92); the depth of the tooth groove 1 (71) is less than the thickness of the locking block (92), and the depth of the tooth groove 2 (121) is greater than the thickness of the locking block (92). An elastic element is pressed between the bottom surface of the tooth groove 2 (121) and the locking block (92), and the elastic element drives the locking block (92) to move toward the tooth groove 1 (71); it also includes an unlocking element (91), which penetrates into the tooth groove 1 (71) and abuts against the side of the locking block (92), and the unlocking element (91) pushes the locking block (92) away from the tooth groove 1 (71).

6. The foldable, installation-free study chair as described in claim 5, characterized in that: The center of the first tooth groove (71) is recessed to form a countersunk hole (73), and the center of the second tooth groove (121) extends toward the countersunk hole (73) and is fitted with a central post (122); a through hole (72) is opened on the first tooth groove (71), and an extension rod (911) and a hook (912) are formed on the side of the unlocking member (91). The unlocking member (91) is fastened to the side of the rear support leg (7), and the hook (912) passes through the through hole (72) through the extension rod (911) and is then engaged.

7. The foldable, installation-free study chair as described in claim 4, characterized in that: The support arm (120) and the rear support leg (7) are respectively recessed to form a fitting surface. The support arm (120) is mounted on the outside of the rear support leg (7). The shape of the mounted support arm (120) and the rear support leg (7) are compatible.

8. A foldable, installation-free study chair as described in claim 4, characterized in that: The rear support (6) is installed between the top ends of the connecting parts (12) of the front support leg (1), and the backrest (60) is slidably fitted from top to bottom on the front side of the rear support (6) via the sliding groove (61).

9. A foldable, installation-free study chair as described in claim 1, characterized in that: A lower crossbeam (13) is installed between the front support legs (1), and a pedal assembly (8) is installed on the lower crossbeam (13). The pedal assembly (8) is flipped and folded upward relative to the lower crossbeam (13).

10. A foldable, installation-free study chair as described in claim 9, characterized in that: The structure of the pedal assembly (8) is as follows: it includes a pedal component (81), the bottom of which is fitted onto the lower crossbeam (13) through an upper recess (811); it also includes a fastening plate (82), the upper part of which is fitted onto the lower crossbeam (13) through a lower recess (821), and the fastening plate (82) is locked and fixed to the pedal component (81); a limiting block (131) is installed on the lower crossbeam (13) located between the pedal component (81) and the fastening plate (82), the upper edge of the limiting block (131) abuts against the bottom surface of the pedal component (81) or the lower edge of the limiting block (131) abuts against the top surface of the fastening plate (82) to form a limiting.

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