Anti-toppling and foldable metal child learning chair

Abstract

The utility model discloses a kind of anti-toppling and foldable metal children's study chair, including seat body and the lifting rod of setting in the bottom of seat body, lifting rod bottom extends outward with multiple groups of crosspieces horizontally, every group of crosspiece bottom is fixed with universal wheel, lifting rod bottom is equipped with multiple groups of anti-toppling components along circumferential side, anti-toppling component includes extension rod and anti-toppling arc-shaped rod, the extension rod one end is fixed in the bottom of lifting rod, the other end extends to between adjacent two groups of universal wheel, anti-toppling arc-shaped rod is arranged in the one end of extension rod away from lifting rod, the utility model can be filled by setting anti-toppling component gap between adjacent universal wheel, so that study chair is not prone to toppling in sliding.

Description

Technical Field

[0001] This utility model relates to the field of seating technology, specifically to an anti-tipping and foldable metal children's study chair. Background Technology

[0002] A chair is a seat with a backrest, and sometimes armrests. Currently, the safety of chairs used for children is low. Specifically, kindergarten students are generally young, and students of this age are more playful and active, which can easily cause the chair to tilt, thus affecting the students' personal safety. The chair can also easily tip over and cause danger. Utility Model Content

[0003] The purpose of this invention is to provide an anti-tipping and foldable metal children's study chair to solve the above-mentioned technical problems.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a tilt-resistant and foldable metal children's learning chair, comprising a seat body and a lifting rod disposed at the bottom of the seat body. The bottom of the lifting rod extends horizontally outward with multiple sets of crossbars, and each set of crossbars is fixed with a caster wheel at its bottom. The bottom of the lifting rod is provided with multiple sets of anti-tilt components along its circumference. The anti-tilt components include an extension rod and an anti-tilt arc rod. One end of the extension rod is fixed to the bottom of the lifting rod, and the other end extends between two adjacent sets of casters. The anti-tilt arc rod is disposed at the end of the extension rod away from the lifting rod.

[0005] Preferably, the extension rod includes an inner rod and an outer rod. One end of the outer rod is slidably mounted on the inner rod, and the other end is fixedly connected to the anti-tilting arc rod. The bottom of the lifting rod is provided with an extension column, and a sliding disc is slidably mounted inside the extension column. An adjusting component for adjusting the height of the sliding disc is also provided inside the extension column. The end of the inner rod away from the outer rod is hinged to the sliding disc, and a limiting component for limiting the position of the inner rod is provided on the inner rod.

[0006] Preferably, the inner rod has a groove at its outer end, and the outer rod has a slide rod at one end. The slide rod is slidably mounted on the inner rod by cooperating with the groove. The slide rod has fixing holes evenly distributed along its length. The limiting element is a bolt, which is threaded onto the inner rod to lock the fixing holes.

[0007] Preferably, the outer wall of the sliding disk is provided with a rotating area for the inner rod to extend into, the inner wall of the rotating area is provided with a first rotating hole, and the end of the inner rod is provided with a first rotating shaft that is rotatably connected to the rotating hole.

[0008] Preferably, the inner rod includes an adapter rod and a hinge rod. The extension column is provided with a groove for the hinge rod to extend out. The inner wall of the groove is provided with a second rotating hole. The hinge rod is provided with a second rotating shaft that rotates with the second rotating hole. One end of the hinge rod located inside the extension column is slidably connected to the adapter rod.

[0009] Preferably, one end of the hinge rod is provided with a long rod, and one end of the adapter rod is provided with a sliding groove for the long rod to slide and connect.

[0010] Preferably, the adjusting component is an adjusting bolt, and the extension column is provided with a groove for the sliding disc to slide up and down. The adjusting bolt is threaded to the bottom of the extension column and rotatably connected to the top of the sliding disc.

[0011] Preferably, an arc-shaped connecting rod is slidably provided inside the anti-tilt arc rod, and one end of the adjacent anti-tilt arc rod is provided with a connecting port for inserting one end of the arc-shaped connecting rod. The arc-shaped connecting rod is provided with a lever that extends out of the anti-tilt arc rod, and the anti-tilt arc rod is provided with an arc-shaped channel for sliding the arc-shaped connecting rod and an arc-shaped groove for sliding the lever.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: The anti-tilt component includes an extension rod and an anti-tilt arc rod, which can effectively fill the gap between adjacent casters and prevent the study chair from tipping over during movement; The extension rod consists of an inner rod and an outer rod. The outer rod is slidably mounted on one end of the inner rod. The inner rod consists of a hinge rod and an adapter rod. The sliding plate is slidably mounted inside the extension column. The height of the sliding plate can be adjusted by adjusting the bolt, thereby adjusting the angle of the extension rod. The length of the extension rod can be changed by sliding the outer rod, thereby adjusting the support position of the anti-tilt arc rod and increasing the flexibility of the anti-tilt component. The anti-tilt arc rod has a sliding arc connecting rod inside, and one end of the adjacent anti-tilt arc rod is provided with a connection port for the arc connecting rod to extend into. This allows multiple sets of anti-tilt arc rods to form a ring structure, giving the study chair a comprehensive anti-tilt design. Attached Figure Description

[0013] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the overall structure of this embodiment; Figure 2 yes Figure 1 An enlarged schematic diagram of part A in the middle; Figure 3This is an exploded schematic diagram highlighting the inner rod, outer rod, and adjusting break in this embodiment.

[0015] The attached diagram lists the components represented by each number as follows: 1. Seat body; 2. Lifting rod; 3. Crossbar; 4. Casters; 5. Anti-tilt assembly; 51. Extension rod; 511. Inner rod; 5111. Adaptor rod; 5112. Hinge rod; 512. Outer rod; 52. Anti-tilt arc rod; 6. Slide rod; 7. Rod groove; 8. Fixing hole; 9. Bolt; 10. Extension column; 11. Sliding plate; 12. Adjusting bolt; 13. Rotation area; 14. First rotating hole; 15. First rotating shaft; 16. Groove; 17. Second rotating hole; 18. Second rotating shaft; 19. Long rod; 20. Sliding groove; 21. Arc-shaped connecting rod; 22. Connection port; 23. Toggle lever; 24. Arc-shaped channel; 25. Arc-shaped groove. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0017] Please see Figure 1-3 This utility model provides a technical solution: A tilt-resistant and foldable metal children's study chair is designed to address the safety issue of existing children's chairs easily tipping over due to children's active nature. Its overall structure revolves around a "basic support + adjustable anti-tilt" design. The core components include the seat body 1, lifting rod 2, crossbar 3, casters 4, and multiple anti-tilt components 5. These components are connected through fixing, sliding, and hinges to form a stable yet flexible assembly relationship. Its main difference from existing technologies lies in the inclusion of anti-tilt components 5. The specific structure, connections, and positional relationships are as follows: First, the seat body 1 serves as the main body for children to sit on. The bottom of the seat body 1 is fixedly connected to the lifting rod 2. The lifting rod 2 is vertically set below the seat body 1 and is used to adjust the overall height of the seat body 1 to accommodate children of different heights. At the bottom of the lifting rod 2, multiple sets of crossbars 3 extend outward in the horizontal direction (the specific number can be adapted according to the seat size, usually 3-5 sets to ensure basic stability). The crossbars 3 are evenly distributed, and each set of crossbars 3 is fixedly installed with casters 4 at the bottom, enabling flexible movement of the entire seat. The above is existing technology, so it will not be described in detail.

[0018] Specifically, each anti-tilt assembly 5 consists of an extension rod 51 and an anti-tilt arc rod 52. One end of the extension rod 51 extends from the bottom of the lifting rod 2 to between two adjacent sets of casters 4, and is fixed to the anti-tilt arc rod 52 by welding, ensuring that the extension rod 51 can fill the support gap between the casters 4 (when a chair with casters 4 tilts, it generally tilts along the support gap).

[0019] The extension rod 51 includes an inner rod 511 and an outer rod 512. One end of the outer rod 512 is provided with a sliding rod 6, and one end of the inner rod 511 is provided with a rod groove 7 that matches the sliding rod 6. The sliding rod 6 is slidably mounted on the inner rod 511 through a clearance fit with the rod groove 7, so as to realize the extension and retraction of the outer rod 512 relative to the inner rod 511. In order to fix the extension and retraction position of the outer rod 512, multiple fixing holes 8 are evenly provided along its length direction on the sliding rod 6. The inner rod 511 is threaded with bolts 9 as limiting members at the positions corresponding to the fixing holes 8. When the outer rod 512 slides to the target position, the bolts 9 are tightened so that its end extends into the corresponding fixing hole 8, thereby locking the relative position of the outer rod 512 and the inner rod 511, and thus adjusting the overall length of the extension rod 51.

[0020] An extension column 10 is fixed at the bottom of the lifting rod 2. The axis of the extension column 10 coincides with the axis of the lifting rod 2. The extension column 10 has a groove inside for the sliding disk 11 to slide up and down. The sliding disk 11 is a circular disk that fits the groove and can move up and down along the inner wall of the groove. To adjust the height of the sliding disk 11, an adjusting component is provided inside the extension column 10. The adjusting component is an adjusting bolt 12. The top of the adjusting bolt 12 is rotatably connected to the bottom of the sliding disk 11 through a bearing. The rod of the adjusting bolt 12 is threadedly connected to the bottom end face of the extension column 10. When the adjusting bolt 12 is rotated, due to the thread fit between the adjusting bolt 12 and the extension column 10, the adjusting bolt 12 will rise and fall in the vertical direction, thereby pushing the sliding disk 11 to move up and down in the groove.

[0021] The inner rod 511 of the extension rod 51 is hinged to the sliding disk 11 at the end away from the outer rod 512. Specifically, the outer wall of the sliding disk 11 is provided with a rotation area 13 for the inner rod 511 to extend into. The inner walls on both sides of the rotation area 13 are symmetrically provided with first rotating holes 14. The end of the inner rod 511 is provided with a first rotating shaft 15 that is adapted to the first rotating hole 14. The inner rod 511 is rotatably mounted on the sliding disk 11 through the cooperation of the first rotating shaft 15 and the first rotating hole 14. The inner rod 511 can rotate around the first rotating shaft 15 in the rotation area 13 to realize the adjustment of the overall angle of the extension rod 51.

[0022] Furthermore, the inner rod 511 also includes an adapter rod 5111 and a hinge rod 5112: a first rotating shaft 15 is disposed on the adapter rod 5111; one end of the hinge rod 5112 is connected to the outer rod 512 and the other end is connected to the adapter rod 5111; a groove 16 for the hinge rod 5112 to extend out is provided on the side wall of the extension column 10, and the width of the groove 16 is adapted to the width of the hinge rod 5112; second rotating holes 17 are symmetrically provided on the inner walls of both sides of the groove 16; a second rotating shaft 18 adapted to the second rotating hole 17 is provided on the hinge rod 5112, and both ends of the second rotating shaft 18 extend into the second rotating holes 17 on both sides respectively; the hinge rod 5112 is rotatably disposed on the extension column 10 through the rotation of the second rotating hole 17 and the second rotating shaft 18.

[0023] To prevent the sliding disk 11 from causing the adapter rod 5111 to rotate and jam against the hinge rod 5112, a long rod 19 is fixed to one end of the hinge rod 5112. A sliding groove 20 is provided at the end of the adapter rod 5111 near the hinge rod 5112 for the long rod 19 to slide. When the inner rod 511 rotates as a whole or the extension rod 51 extends or retracts, the long rod 19 can slide in the sliding groove 20 to compensate for the relative displacement between the adapter rod 5111 and the hinge rod 5112, ensuring the stability of the inner rod 511 structure. (It should be noted that the rotation area 13 of the sliding disk 11 into which the adapter rod 5111 extends has a certain depth to allow the long rod 19 and the sliding groove 20 to have a certain sliding space.)

[0024] To further enhance the anti-tipping effect, the anti-tipping arc-shaped rod 52 has an arc-shaped channel 24 inside, and an arc-shaped connecting rod 21 is slidably installed inside the arc-shaped channel 24. The cross-sectional dimensions of the arc-shaped connecting rod 21 are adapted to the arc-shaped channel 24, and it can slide along the arc-shaped channel 24. One end of each adjacent anti-tipping arc-shaped rod 52 has a connecting port 22, which is connected to and opposite to the arc-shaped channel 24. When the arc-shaped connecting rod 21 slides along the arc-shaped channel 24, one end can extend into the connecting port 22 of the adjacent anti-tipping arc-shaped rod 52, so that multiple sets of anti-tipping arc-shaped rods 52 are connected by the arc-shaped connecting rod 21 to form a ring structure, forming a better anti-tipping setting. It should be noted that the anti-tipping arc-shaped rod 52 extends to the diameter of the universal wheel 4 through the extension rod 51. After the outer side is reached, the arc-shaped connecting rod 21 can be slid out to connect the adjacent anti-tilt arc rods 52. This state is suitable for heavier children or more active children when using the seat, and it provides a wider range of anti-tilt states. In addition, a lever 23 is fixed on the outer wall of the arc-shaped connecting rod 21. An arc-shaped groove 25 is opened on the outer wall of the anti-tilt arc rod 52. The arc-shaped groove 25 is connected to the arc-shaped channel 24 and extends in the same direction as the arc-shaped channel 24. The lever 23 passes through the arc-shaped groove 25 and extends to the outside of the anti-tilt arc rod 52. By moving the lever 23, the arc-shaped connecting rod 21 can be slid in the arc-shaped channel 24, which facilitates the connection or separation of the arc-shaped connecting rod 21 from the adjacent anti-tilt arc rod 52.

[0025] In summary, this embodiment, by setting multiple sets of adjustable anti-tilt components 5 around the lifting rod 2, and using the length and angle adjustment of the extension rod 51 to adapt to different usage scenarios, and combining the arc-shaped connecting rod 21 to connect the anti-tilt arc rod 52 into a ring structure, effectively fills the support gap between the universal wheels 4 and solves the problem of existing child seats easily tipping over; at the same time, the sliding and hinge structure design of each component takes into account both safety and flexibility of use.

[0026] In the description of this utility model, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "side", "top", "inner", "front", "center", "both ends", etc., indicate the orientation or positional relationship based on the drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0027] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "setting", "connection", "fixing", "screw connection", etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that modifications may be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A tilt-resistant and foldable metal children's study chair, comprising a seat body (1) and a lifting rod (2) disposed at the bottom of the seat body (1), wherein the bottom of the lifting rod (2) extends horizontally outward with multiple sets of crossbars (3), and each set of crossbars (3) is fixed with casters (4) at its bottom, characterized in that: The bottom of the lifting rod (2) is provided with multiple anti-tilt components (5) along the periphery. The anti-tilt components (5) include an extension rod (51) and an anti-tilt arc rod (52). One end of the extension rod (51) is fixed to the bottom of the lifting rod (2), and the other end extends to the space between two adjacent sets of universal wheels (4). The anti-tilt arc rod (52) is located at the end of the extension rod (51) away from the lifting rod (2).

2. The anti-tipping and foldable metal children's study chair according to claim 1, characterized in that: The extension rod (51) includes an inner rod (511) and an outer rod (512). One end of the outer rod (512) is slidably mounted on the inner rod (511), and the other end is fixedly connected to the anti-tilting arc rod (52). The bottom of the lifting rod (2) is provided with an extension column (10). A sliding disk (11) is slidably mounted inside the extension column (10). An adjusting component for adjusting the height of the sliding disk (11) is also provided inside the extension column (10). One end of the inner rod (511) away from the outer rod (512) is hinged to the sliding disk (11). A limiting component for limiting the position of the inner rod (511) is provided on the inner rod (511).

3. The anti-tipping and foldable metal children's study chair according to claim 2, characterized in that: The inner rod (511) has a rod groove (7) at its outer end, and the outer rod (512) has a sliding rod (6) at one end. The sliding rod (6) is slidably mounted on the inner rod (511) by cooperating with the rod groove (7). The sliding rod (6) has a fixing hole (8) evenly provided along its length direction. The limiting member is a bolt (9). The bolt (9) is threadedly connected to the inner rod (511) to lock the fixing hole (8).

4. The anti-tipping and foldable metal children's study chair according to claim 2, characterized in that: The outer wall of the sliding disk (11) is provided with a rotating area (13) into which the inner rod (511) extends. The inner wall of the rotating area (13) is provided with a first rotating hole (14). The end of the inner rod (511) is provided with a first rotating shaft (15) that is rotatably connected to the rotating hole.

5. The anti-tipping and foldable metal children's study chair according to claim 4, characterized in that: The inner rod (511) includes an adapter rod (5111) and a hinge rod (5112). The extension column (10) is provided with a groove (16) for the hinge rod (5112) to extend out. The inner wall of the groove (16) is provided with a second rotating hole (17). The hinge rod (5112) is provided with a second rotating shaft (18) that rotates with the second rotating hole (17). One end of the hinge rod (5112) located inside the extension column (10) is slidably connected to the adapter rod (5111).

6. The anti-tipping and foldable metal children's study chair according to claim 5, characterized in that: The hinge rod (5112) has a long rod (19) at one end, and the adapter rod (5111) has a sliding groove (20) at one end for the long rod (19) to slide.

7. The anti-tipping and foldable metal children's study chair according to claim 2, characterized in that: The adjusting component is an adjusting bolt (12). The extension column (10) is provided with a groove for the sliding disk (11) to slide up and down. The adjusting bolt (12) is threaded to the bottom of the extension column (10) and rotated to the top of the sliding disk (11).

8. The anti-tipping and foldable metal children's study chair according to claim 1, characterized in that: An arc-shaped connecting rod (21) is slidably provided inside the anti-tilt arc rod (52). One end of the adjacent anti-tilt arc rod (52) is provided with a connecting port (22) for inserting one end of the arc-shaped connecting rod (21). The arc-shaped connecting rod (21) is provided with a lever (23) that passes through the anti-tilt arc rod (52). The anti-tilt arc rod (52) is provided with an arc-shaped channel (24) for sliding the arc-shaped connecting rod (21) and an arc-shaped groove (25) for sliding the lever (23).

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