Backrest adjusting mechanism and child dining chair

Abstract

The utility model relates to the technical field of tools for children, solves the problem that the use effect is poor due to the fact that an existing dining chair for children sometimes slips off, and discloses a backrest adjusting mechanism and a dining chair for children, the backrest adjusting mechanism comprises a chair surface part and a chair back part, the chair surface part and the chair back part are in running fit, and the chair surface part and the chair back part are in running fit. A locking mechanism is arranged between the chair surface part and the chair back part, and the chair is characterized in that a limiting block is arranged on the chair back part, a limiting sliding groove matched with the limiting block is formed in the chair surface part, the sliding direction of the limiting block and the limiting sliding groove is consistent with the adjusting and rotating direction of the backrest, and the limiting sliding groove is matched with the limiting block. The limiting block comprises a sliding part and a blocking part connected to the sliding part, the sliding part is in sliding fit with the limiting sliding groove, and the blocking part penetrates through the limiting sliding groove to limit the sliding part to be separated from the limiting sliding groove. The use effect of the child dining chair can be improved.

Description

Technical Field

[0001] The present application relates to children's furniture, and in particular to a backrest adjustment mechanism and a children's seat. Background Art

[0002] A children's dining chair is a special seat for children, mainly used for children to use when dining. Compared with ordinary chairs, it has undergone special improvements, especially improving the protection for children, so that parents can feel at ease letting their children sit alone on the dining chair.

[0003] The seat of today's children's dining chairs is typically made of a single piece of injection molding, resulting in a fixed seat angle and an inability to adjust the backrest angle. However, as people's demands for comfort grow, they are also beginning to demand that the backrest angle of children's dining chairs be adjustable to improve children's comfort and reduce crying caused by discomfort.

[0004] The common children's dining chairs currently on the market can adjust the angle between the seat surface and the seat back by rotating the seat surface, and then lock the seat surface and the seat back by a locking mechanism between the seat surface and the seat back.

[0005] However, the applicant has discovered that the seat top and the seat back of the above-mentioned children's dining chair may sometimes slip during adjustment, resulting in poor overall performance of the children's dining chair. Summary of the Invention

[0006] In order to improve the problem that current children's dining chairs sometimes slip and result in poor use, the present application provides a backrest adjustment mechanism and a construction method.

[0007] In a first aspect, the present application provides a backrest adjustment mechanism, which adopts the following technical solution:

[0008] A backrest adjustment mechanism includes a seat portion and a seat back, the seat portion and the seat back are rotatably engaged with each other, and a locking mechanism is provided between the seat portion and the seat back, a limit block is provided on the seat back, and a limit slide for the limit block to cooperate with is provided on the seat portion, the sliding direction of the limit block and the limit slide is consistent with the adjustment rotation direction of the backrest, the limit block includes a sliding part and a stop part connected to the sliding part, the sliding part is slidably engaged with the limit slide, and the stop part passes through the limit slide to limit the sliding part from disengaging from the limit slide.

[0009] By adopting the above technical solution, the limit block cooperates with the limit slide groove. When the chair back rotates, the limit block can slide in the limit slide groove. Since the blocking part passes through the limit slide groove to limit the sliding part from leaving the limit slide groove, the chair back can be prevented from separating from the chair seat during rotation, thereby improving the overall use effect.

[0010] Preferably, at least two limiting blocks are provided on the chair back and are distributed on both sides of the locking mechanism.

[0011] By adopting the above technical solution, multiple limit blocks are set, and the limit slides are set corresponding to the limit blocks, so that multi-position limit can be achieved. At the same time, the limit effects on the chair face and chair back can be improved by being distributed on both sides of the locking mechanism.

[0012] Preferably, the sliding portion and the shifting portion are integrally provided, and the limiting sliding groove is provided with a through opening for the shifting portion to pass through.

[0013] By adopting the above technical solution, the integrated setting of the sliding part and the shifting part can facilitate the injection molding of the limit block together with the chair back during production. At the same time, the opening of the through-hole can enable the shifting part on the limit block to pass through the limit sliding groove through the through-hole when the chair face and the chair back are installed.

[0014] Preferably, the through opening is located at one end of the limiting sliding groove.

[0015] By adopting the above technical solution, the through-hole is located at one end of the limiting slide groove, which makes it difficult for the stop block to align with the through-hole during the sliding process of the limiting block. At the same time, it is also convenient to slide the limiting block to the end for disassembly.

[0016] Preferably, the through opening is located at an upper end of the limiting sliding groove.

[0017] By adopting the above technical solution, when the limit block slides to the upper end of the limit slide groove, the angle between the chair back and the chair face is the smallest. This situation is inconvenient for children to sit on, so it rarely occurs in actual use; setting the through-hole at this position can effectively avoid the occurrence of the phenomenon of the blocking part and the through-hole being aligned.

[0018] In a second aspect, the present application provides a children's dining chair, which adopts the following technical solution:

[0019] A children's dining chair comprises chair legs, a seat portion and a chair back. The seat portion is arranged on the chair legs, and the above-mentioned backrest adjustment mechanism is arranged between the seat portion and the chair back.

[0020] By adopting the above technical solution, by arranging a limit block and a limit slide groove between the chair face and the chair back to cooperate with each other, the chair back can be prevented from separating from the chair face when rotating, thereby improving the overall use effect.

[0021] Preferably, there are four chair legs, and a pedal is provided between the two front chair legs.

[0022] By adopting the above technical solution, the pedal arrangement can provide support for children's feet and improve the comfort of children sitting on the dining chair.

[0023] Preferably, a dining tray is connected to the chair seat, and two sides of the dining tray are respectively connected to two sides of the chair seat.

[0024] By adopting the above technical solution, the dining tray can be rotated open when the child gets on the dining chair, and the dining tray can be rotated back to place the food after the child sits on the dining chair.

[0025] In summary, this application has at least one of the following beneficial effects:

[0026] By providing limit blocks on both sides of the locking mechanism to cooperate with the limit slots, the stoppers in the limit blocks prevent the backrest and seat from separating during rotation. This also provides multiple points of positional restraint between the seat and backrest on both sides of the locking mechanism, improving overall usability. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic diagram of the overall structure of a children's dining chair in an embodiment of the present application;

[0028] Figure 2 This is a schematic diagram of the overall structure of the chair back in an embodiment of the present application;

[0029] Figure 3 This is a schematic diagram of the overall structure of the chair top portion in the embodiment of the present application;

[0030] Figure 4 yes Figure 2 Enlarged view of point A in the middle;

[0031] Figure 5 yes Figure 3 Enlarged view of point B in the middle;

[0032] Figure 6 This is a cross-sectional view of the cooperation between the limiting block and the limiting sliding groove in the embodiment of the present application;

[0033] Figure 7 yes Figure 6 Enlarged view of point C in the middle.

[0034] Explanation of the accompanying reference numerals: 1. chair surface; 11. limiting slide groove; 12. through-opening; 2. chair back; 21. limiting block; 211. sliding portion; 212. shifting portion; 3. locking mechanism; 4. chair leg; 5. pedal; 6. dining tray. DETAILED DESCRIPTION

[0035] The following is combined with Figure 1-7 This application is described in further detail. Example

[0036] Reference Figure 1 A backrest adjustment mechanism includes a seat portion 1 and a backrest 2. The seat portion 1 and backrest 2 rotate together to adjust the angle between the seat portion 1 and backrest 2. A locking mechanism 3 is provided between the seat portion 1 and backrest 2. During use, the position of the seat portion 1 and backrest 2 is adjusted by rotating the seat portion 1 and backrest 2, and then locked by the locking mechanism 3. The specific structure of the locking mechanism 3 is consistent with the locking mechanism 3 described in the previously disclosed patent number CN216220963U, and therefore will not be repeated here.

[0037] The key point of the embodiment of the present application is to limit the rotation between the seat surface 1 and the seat back 2, limit the rotation angle between the two, and prevent the two from slipping during the rotation process, which affects the use effect. Figure 2 and Figure 3 A limit block 21 is provided on the chair surface 1, and a corresponding limit slot 11 is provided on the chair back 2. The limit block 21 and the limit slot 11 are fitted together by sliding, and the sliding direction is consistent with the rotation direction of the chair back 2.

[0038] Further, refer to Figure 4 and Figure 5 The limit block 21 includes a sliding portion 211 and a stop portion 212. The sliding portion 211 has a width that matches the width of the limit slot 11 and slides within the limit slot 11. The stop portion 212 passes through the limit slot 11 and abuts against the outer wall of the seat portion 1, thereby preventing the limit block 21 from disengaging from the limit slot 11.

[0039] In one embodiment, in order to facilitate the overall injection molding production, the limit block 21 is integrally injection molded with the chair back 2. At the same time, the limit slide 11 is expanded to form a through-opening 12 so that the stop block can be installed through the limit slide 11. The through-opening 12 is provided at one end of the limit slide 11, and is preferably provided at the upper end of the limit slide 11. In this way, when the stop block is aligned with the through-opening 12, the angle between the chair back 2 and the seat portion 1 is minimized. This situation is least likely to occur in actual use, and thus the occurrence of the phenomenon of the stop portion 212 being aligned with the through-opening 12 can be effectively avoided. At the same time, it is also convenient to rotate the chair back 2 to the minimum angle state during disassembly so that the stop portion 212 can be taken out through the through-opening 12.

[0040] In another embodiment, the sliding portion 211 of the limiting block 21 is integrally injection-molded with the chair back 2, while the stopper 212 is provided separately from the sliding portion 211. During installation, the chair back 2 is first connected to the seat portion 1, with the sliding portion 211 inserted into the limiting slot 11. The sliding portion 211 and the stopper 212 are then connected. The sliding portion 211 and the stopper 212 can be connected by adhesive bonding, bolting, or other methods.

[0041] To ensure effective positioning between the backrest 2 and the seat portion 1, at least two limiting blocks 21 are provided on the backrest 2, preferably an even number so as to be symmetrically distributed on both sides of the locking mechanism 3. The number of limiting slots 11 corresponds to the number of limiting blocks 21, so that they can be provided on both sides of the locking mechanism 3.

[0042] The implementation principle of a backrest adjustment mechanism in the embodiment of the present application is as follows:

[0043] By providing limit blocks 21 on both sides of the locking mechanism 3 to cooperate with the limit slots 11, the stopper portions 212 in the limit blocks 21 can prevent the seat back 2 and seat portion 1 from separating during rotation. Simultaneously, multiple points of positional limitation between the seat portion 1 and the seat back 2 are achieved on both sides of the locking mechanism 3, improving overall user experience. Example

[0044] A children's dining chair comprises four legs 4, a seat portion 1 connected to the four legs 4, and a backrest 2 connected to the seat portion 1, wherein the backrest adjustment mechanism described in the first embodiment is provided between the seat portion 1 and the backrest 2.

[0045] Furthermore, a pedal 5 is provided between the two front chair legs 4 , and both ends of the pedal 5 are respectively sleeved on the two chair legs 4 to achieve fixation, thereby making it convenient for children to step on it.

[0046] In one embodiment, the position of the pedal 5 can also be adjusted by an adjusting mechanism, and the adjusting mechanism can be tightened by a side bolt.

[0047] It should also be noted that a dining tray 6 is connected to the seat portion 1. One side of the dining tray 6 is rotatably connected to one side of the seat portion 1, and the other side of the dining tray 6 overlaps the other side of the seat portion 1. When a child is sitting in the dining chair, the dining tray 6 can be rotated open. After the child sits in the dining chair, the dining tray 6 can be rotated back to place the food, thereby protecting the child.

[0048] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A backrest adjustment mechanism, comprising a seat portion (1) and a seat back portion (2), wherein the seat portion (1) and the seat back portion (2) are rotatably engaged with each other, and a locking mechanism (3) is provided between the seat portion (1) and the seat back portion (2), characterized in that: A limit block (21) is provided on the backrest (2), and a limit slot (11) for the limit block (21) to cooperate with is provided on the seat surface (1). The sliding direction of the limit block (21) and the limit slot (11) is consistent with the adjustment rotation direction of the backrest. The limit block (21) includes a sliding portion (211) and a stop portion (212) connected to the sliding portion (211). The sliding portion (211) is slidably matched with the limit slot (11), and the stop portion (212) passes through the limit slot (11) to limit the sliding portion (211) from being separated from the limit slot (11).

2. The backrest adjustment mechanism according to claim 1, characterized in that: At least two limit blocks (21) are provided on the chair back (2) and are distributed on both sides of the locking mechanism (3).

3. The backrest adjustment mechanism according to claim 1, characterized in that: The sliding portion (211) and the shifting portion (212) are integrally arranged, and a through opening (12) for the shifting portion (212) to pass through is provided on the limiting sliding groove (11).

4. The backrest adjustment mechanism according to claim 3, characterized in that: The through opening (12) is located at one end of the limiting sliding groove (11).

5. The backrest adjustment mechanism according to claim 4, characterized in that: The through opening (12) is located at the upper end of the limiting sliding groove (11).

6. A children's dining chair, comprising chair legs (4), a chair top (1) and a chair back (2), wherein the chair top (1) is arranged on the chair legs (4), and is characterized in that: A backrest adjustment mechanism according to any one of claims 1 to 5 is provided between the chair face portion (1) and the chair back portion (2).

7. The children's dining chair according to claim 6, characterized in that: Four chair legs (4) are provided, and a pedal (5) is provided between two front chair legs (4).

8. The children's dining chair according to claim 6, characterized in that: A dining tray (6) is connected to the chair surface (1), and two sides of the dining tray (6) are respectively connected to two sides of the chair surface (1).

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