A quick-assembly dining plate structure and a dining chair with the same

Abstract

The utility model discloses a kind of quick-mounting type dinner plate structure and dining chair with it, by hooking part is inserted into interval space and using hooking part to wrap up the mechanical interlocking principle of upper connecting part and pressure part and press down connecting part, so that user can complete the preliminary installation and fixing of dinner plate main body by only one simple action, the mechanical interlocking of preceding described realizes reliable preliminary connection, and additional supporting arm constitutes a stable triangular auxiliary support structure between dinner plate and dining chair, secondary fixing effectively transfers the load supported by dinner plate front to stable seat plate and main frame body, to greatly enhance the overall carrying capacity, impact resistance and safety, fundamentally avoid the risk of dinner plate loosening, sagging or overturning in use. In addition, the overall structure of the scheme is simple and practical, and the mature mechanical structure and quick-release mechanism are used skillfully. The components are easy to produce and assemble, with low manufacturing cost and high reliability. The pure mechanical connection ensures long service life and low maintenance requirements.

Description

Technical Field

[0001] This utility model relates to the field of children's products technology, and in particular to a quick-assembly dinner tray structure and a dining chair having the same structure. Background Technology

[0002] High chairs are common childcare products in modern families. The tray, as the core platform for children's eating and playing, often needs to be installed and disassembled to meet the needs of cleaning, storage, or mode switching. Traditional tray installation methods often rely on screws or complex locks, requiring alignment with holes and tools, making the process cumbersome and time-consuming, and posing a risk of losing small parts like screws. After disassembly, the tray separates from the main body, increasing the space occupied during storage, which is inconsistent with the trend of folding high chairs for overall storage. Furthermore, while some quick-release structures simplify operation, they often suffer from insufficient connection strength and poor stability, easily wobbling or even falling off when children push or place heavy objects on them, posing safety hazards. Therefore, the market urgently needs a tray installation structure that allows for quick assembly and disassembly, easy operation, ensures a stable and reliable connection, and facilitates overall storage. Utility Model Content

[0003] The main purpose of this utility model is to propose a quick-assembly plate structure and a dining chair with the same structure, aiming to provide a plate installation structure that can achieve quick assembly and disassembly, is easy to operate, ensures a stable and reliable connection, and facilitates overall storage.

[0004] To achieve the above objectives, this utility model proposes a quick-assembly tray structure, including a tray and a support arm, for use in a dining chair, wherein the dining chair includes a back frame and a seat.

[0005] The plate has two rearward-extending connecting arms on its rear side;

[0006] The free end of the connecting arm is provided with an upward-facing hook, and the outer bottom wall of the hook is provided with a downward-protruding pressing part;

[0007] The back frame is provided with an upper connecting part and a lower connecting part arranged at intervals, and the space between the upper connecting part and the lower connecting part is available for the hook to extend into.

[0008] When the hook extends into the space, the hook wraps around the upper connecting part, and the pressing part presses against the lower connecting part to achieve a detachable connection between the plate and the back frame.

[0009] The upper end of the support arm is connected to the bottom of the plate, and the lower end of the support arm is used to detachably connect and lock to the seat, so as to provide auxiliary support for the plate through the support arm.

[0010] Preferably, the connecting arm, hook, and pressing part are integrally formed structures;

[0011] Alternatively, the connecting arm, hook, and pressure part are separate structures, and the hook and pressure part are fixed to the free end of the connecting arm by means of insert injection molding, interference fit, or fastener connection.

[0012] Preferably, the bottom of the plate is provided with a first slot for the upper end of the support arm to be horizontally inserted or withdrawn;

[0013] The seat plate is provided with a second slot for the lower end of the support arm to be horizontally inserted or withdrawn.

[0014] Preferably, the first slot is provided with a first button pin;

[0015] During the process of the upper end of the support arm being horizontally inserted into the first slot, its end abuts against and forces the first button pin to retract.

[0016] When the upper end of the support arm continues to be inserted past the first button pin, the first button pin resets and extends into the first slot, thereby preventing the upper end of the support arm from exiting the first slot.

[0017] Preferably, a first spring is also provided, which applies a spring force to the first button pin to move it into the first slot, thereby realizing the automatic reset of the first button pin.

[0018] Preferably, the lower end of the support arm is provided with a second button pin;

[0019] The bottom wall of the second slot is provided with a pin hole that penetrates the seat plate;

[0020] When the lower end of the support arm is horizontally inserted into the second slot to a predetermined position, the pin head of the second button pin is inserted into the pin hole to prevent the lower end of the support arm from exiting the second slot.

[0021] The lock can be released by pressing the second button pin to disengage it from the pin hole.

[0022] Preferably, a second spring is also provided, which applies a spring force to the second button pin to move it in the direction of insertion into the pin hole, thereby realizing the automatic reset of the second button pin.

[0023] Preferably, the support arm is a telescopic rod structure with adjustable length.

[0024] Preferably, the upper end of the support arm is hinged to the bottom of the plate, so that the support arm can rotate relative to the plate.

[0025] This utility model also proposes a dining chair, including a quick-release plate structure, wherein the quick-release plate structure is the aforementioned quick-release plate structure.

[0026] This utility model's technical solution utilizes a hook that extends into the space and employs a mechanical interlocking principle where the hook wraps around the upper connecting part and the pressing part presses against the lower connecting part. This allows users to complete the initial installation and fixation of the main body of the plate with a simple action. More importantly, the aforementioned mechanical interlocking ensures a reliable initial connection, while the added support arm forms a stable triangular auxiliary support structure between the plate and the chair. This secondary fixation effectively transfers the load borne by the front of the plate to the stable seat and main frame, thereby greatly enhancing the overall load-bearing capacity, impact resistance, and safety, fundamentally avoiding the risk of the plate loosening, sagging, or tipping over during use. Furthermore, the overall structure of this solution is simple and practical, cleverly utilizing mature mechanical structures and quick-release mechanisms. The components are easy to manufacture and assemble, resulting in low manufacturing costs and high reliability. The purely mechanical connection ensures a long lifespan and low maintenance requirements. Simultaneously, both the plate and the support arm can be quickly and non-destructively disassembled. Their neat shape also facilitates storage together with the folded chair frame, effectively reducing the overall packaging volume and significantly lowering warehousing and logistics costs. It combines excellent practicality, outstanding safety, and significant economic benefits. Attached Figure Description

[0027] Figure 1 This is a diagram illustrating the assembly of the dinner plate and dining chair.

[0028] Figure 2 A diagram showing a plate and a dining chair;

[0029] Figure 3 This is a schematic diagram of the outrigger. Detailed Implementation

[0030] The technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.

[0031] It should be noted that if any directional indication (such as up, down, left, right, front, back, top, bottom, inside, outside, vertical, horizontal, longitudinal, counterclockwise, clockwise, circumferential, radial, axial, etc.) is involved in the embodiments of this utility model, the directional indication is only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0032] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," such descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0033] This utility model proposes a quick-assembly tray structure for a dining chair, the dining chair including a back frame and a seat 5.

[0034] In this embodiment of the utility model, such as Figures 1 to 3 As shown, the quick-assembly plate structure includes:

[0035] Plate 1 and support arm 2;

[0036] The plate 1 has two rearwardly extending connecting arms 01 on its rear side;

[0037] The free end of the connecting arm 01 is provided with an upward-facing hook 02, and the outer bottom wall of the hook 02 is provided with a downward-protruding pressing part 03.

[0038] The back frame is provided with an upper connecting part 41 and a lower connecting part 42 arranged at intervals. The space between the upper connecting part 41 and the lower connecting part 42 is available for the hook part 02 to extend into.

[0039] When the hook 02 extends into the space, the hook 02 wraps around the upper connecting part 41, and the pressing part 03 presses against the lower connecting part 42 to achieve a detachable connection between the plate 1 and the back frame.

[0040] The upper end of the support arm 2 is connected to the bottom of the plate 1, and the lower end of the support arm 2 is used to be detachably connected and locked to the seat 5 so as to provide auxiliary support for the plate 1 through the support arm 2.

[0041] Specifically, the connecting arm 01, hook 02, and pressing part 03 are integrally formed structures;

[0042] Alternatively, the connecting arm 01, hook 02, and pressing part 03 are separate structures, and the hook 02 and pressing part 03 are fixed to the free end of the connecting arm 01 by means of insert injection molding, interference fit, or fastener connection.

[0043] The advantages of using a one-piece molded structure are:

[0044] High production efficiency: Reduced assembly steps make it suitable for mass production and effectively reduce manufacturing costs.

[0045] Good structural strength: It avoids stress concentration points that may occur when the parts are connected separately, resulting in better overall mechanical properties and higher structural reliability.

[0046] Excellent sealing and appearance: There are no seams, resulting in a strong sense of unity and a smoother, more aesthetically pleasing appearance.

[0047] The advantages of using a split structure are:

[0048] Material flexibility: Optimal material configuration can be achieved for different components. For example, the connecting arm 01 can use low-cost common plastics, while the hook part 02 and the pressure part 03, which bear the main friction and impact forces, can be made of metal or high-strength engineering plastics, thereby greatly improving the durability and reliability of key parts while controlling costs.

[0049] Design flexibility: It allows for the optimization or replacement of local structures without altering the entire plate.

[0050] Specifically, the bottom of the plate is provided with a first slot 11 for the upper end of the support arm 2 to be horizontally inserted or withdrawn;

[0051] The seat plate 5 is provided with a second slot 51 for the lower end of the support arm 2 to be horizontally inserted or withdrawn.

[0052] Easy to operate and ergonomic: Users can perform horizontal insertion and removal operations from the side of the dining chair. The action path is direct and effortless, eliminating the need for vertical insertion and removal from above or below the plate, which requires considerable force, resulting in a better user experience.

[0053] Avoiding interference: Horizontal operation can effectively avoid interference with already installed plates or children's legs, and provides more operating space.

[0054] Compact structure and reliable connection: After horizontal insertion, the end of support arm 2 is completely accommodated in the slot, resulting in a neat appearance. The inner wall of the slot effectively wraps around and limits support arm 2, enhancing the torsional and impact resistance of the connection point and making secondary fixation more secure.

[0055] Clear guidance: The slot itself provides a natural guide, allowing users to easily and accurately install the support arm 2 into place.

[0056] Specifically, the first slot 11 is provided with a first button pin 12;

[0057] During the process of the upper end of the support arm 2 being horizontally inserted into the first slot 11, its end abuts against and forces the first button pin 12 to retract.

[0058] When the upper end of the support arm 2 continues to be inserted past the first button pin 12, the first button pin 12 resets and extends into the first slot 11, thereby preventing the upper end of the support arm 2 from exiting the first slot 11.

[0059] During installation: When the user inserts the upper end of the support arm 2 horizontally into the first slot 11 at the bottom of the plate, the end or side wall of the upper part of the support arm 2 will first abut against the inclined or rounded pin head of the first button pin 12. As the user continues to apply force, the upper end of the support arm 2 will force the pin head to retract, making way for the continued insertion of the support arm 2. When the upper end of the support arm 2 is fully inserted, past the position of the pin head, the first button pin 12 will fall naturally under the influence of gravity, and the pin head will extend into the first slot 11. At this time, the pin head is just stuck behind the upper end of the support arm 2, forming a mechanical stop, thereby effectively preventing the upper end of the support arm 2 from retracting from the first slot 11, achieving a locking connection.

[0060] During disassembly: The user needs to manually press the button on the first button pin 12 from the outside to release the restriction on the support arm 2. At this time, the upper end of the support arm 2 can be smoothly pulled out horizontally from the first slot 11.

[0061] Beneficial effects: This design enables one-plug locking for installation of the outrigger 2 and one-press pulling for removal, making operation extremely simple and quick. The entire locking process is completed automatically, requiring no additional user intervention, and provides clear tactile and audible feedback, greatly improving the smoothness and reliability of the user experience. At the same time, this purely mechanical locking method is simple in structure, low in cost, and stable in performance.

[0062] Specifically, a first spring is also provided, which applies a spring force to the first button pin 12 to move it into the first slot 11, thereby realizing the automatic reset of the first button pin 12.

[0063] Specifically, the lower end of the support arm 2 is provided with a second button pin 21;

[0064] The bottom wall of the second slot 51 is provided with a pin hole 52 that penetrates the seat plate 5;

[0065] When the lower end of the support arm 2 is horizontally inserted into the second slot 51 to a predetermined position, the pin head of the second button pin 21 is inserted into the pin hole 52 to prevent the lower end of the support arm 2 from exiting the second slot 51.

[0066] The lock can be released by pressing the second button pin 21 to disengage it from the pin hole 52.

[0067] The connection and locking between the support arm 2 and the seat 5 adopts a quick-release structure that is mirror-symmetrical to the plate end but similar in principle, but the specific implementation is different, reflecting the flexibility of the design.

[0068] During installation, the user inserts the lower end of the support arm 2 horizontally into the second slot 51 on the seat plate 5. When the lower end of the support arm 2 is inserted into the predetermined position, the pin head of the second button pin 21 inside it is aligned with the pin hole 52 on the bottom wall of the second slot 51 on the seat plate 5. At this time, the pin head of the second button pin 21 automatically moves downward under gravity and passes through the pin hole 52 on the bottom wall of the second slot 51. This forms a reliable mechanical lock, effectively preventing the lower end of the support arm 2 from exiting the second slot 51.

[0069] During disassembly, the user can directly see and press the button of the second button pin 21 from the bottom of the seat plate 5. This causes the pin head to retract completely from the pin hole 52 into the lower end of the support arm 2. Once the pin head is out, the lower end of the support arm 2 can be horizontally pulled out from the second slot 51.

[0070] The advantages of this design are:

[0071] The functional areas are clearly defined: the complex locking mechanism is integrated into the detachable support arm 2, while only a simple pin hole 52 needs to be machined on the seat plate 5 body. The structure is simpler, reducing the manufacturing complexity and cost of the seat plate 5.

[0072] Easy to operate: The pressing operation during disassembly is performed below the seat 5, which provides a large operating space and good visibility, making it easy for users to find the operating point.

[0073] High reliability: The pin head is directly inserted into the pin hole 52 of the solid material, resulting in high connection strength and very strong resistance to pull-out.

[0074] Symmetry and Distinction in Harmony: Both ends of the support arm 2 are quick-released via push-button pins, ensuring a consistent user experience. However, one end's pin is located in the slot of the plate, while the other end's pin is located on the support arm 2 itself. This differentiated design is the optimal choice based on the different structural characteristics of the plate and the seat 5, fully demonstrating the ingenuity of the design.

[0075] Specifically, a second spring is also provided, which applies a spring force to the second button pin 21 to move it in the direction of the pin hole 52, thereby realizing the automatic reset of the second button pin 21.

[0076] In another preferred embodiment, the upper end of the support arm 2 is hinged to the bottom of the plate 1 via a pivot or hinge structure, allowing the support arm 2 to rotate around the hinge point. During installation, the plate 1 is first secured to the chair via the hook 02, and then the support arm 2 is rotated so that its lower end aligns with and locks into place the connecting structure (such as the second slot) on the seat 5. This solution eliminates the need for disassembling the upper end of the support arm, making operation simpler, and the support arm 2 remains connected to the plate 1, effectively preventing parts from being lost.

[0077] Specifically, the support arm 2 is a telescopic rod structure with adjustable length.

[0078] The length can be adjusted steplessly or in steps by means of, for example, sleeve locking, spring pin positioning, or threaded knob.

[0079] Enhanced versatility and adaptability: For different models and sizes of dining chairs, or when the height of the tray or seat 5 changes due to adjustment, the length of the support arm 2 can be adjusted to ensure that both ends of it can always be smoothly connected to the interface of the tray and seat 5 and maintain tension, which greatly improves the applicability and adaptability of the quick-install tray structure.

[0080] Provides preload and optimizes stability: By appropriately extending the support arm 2, it can be placed under slight stress after installation, providing additional preload to the entire triangular support structure, thereby effectively reducing shaking during use and making the plate more secure.

[0081] Specifically, the upper and lower ends of the support arm 2 are provided with guide slopes or chamfers.

[0082] This utility model also proposes a dining chair, including a quick-release plate structure. Please refer to the above embodiments for the quick-release plate structure. Since this dining chair adopts all the technical solutions of all the above embodiments of the quick-release plate structure, it has at least all the beneficial effects brought about by the technical solutions of the above quick-release plate structure, which will not be described in detail here.

[0083] This utility model's technical solution utilizes a hook that extends into the space and employs a mechanical interlocking principle where the hook wraps around the upper connecting part and the pressing part presses against the lower connecting part. This allows users to complete the initial installation and fixation of the main body of the plate with a simple action. More importantly, the aforementioned mechanical interlocking ensures a reliable initial connection, while the added support arm forms a stable triangular auxiliary support structure between the plate and the chair. This secondary fixation effectively transfers the load borne by the front of the plate to the stable seat and main frame, thereby greatly enhancing the overall load-bearing capacity, impact resistance, and safety, fundamentally avoiding the risk of the plate loosening, sagging, or tipping over during use. Furthermore, the overall structure of this solution is simple and practical, cleverly utilizing mature mechanical structures and quick-release mechanisms. The components are easy to manufacture and assemble, resulting in low manufacturing costs and high reliability. The purely mechanical connection ensures a long lifespan and low maintenance requirements. Simultaneously, both the plate and the support arm can be quickly and non-destructively disassembled. Their neat shape also facilitates storage together with the folded chair frame, effectively reducing the overall packaging volume and significantly lowering warehousing and logistics costs. It combines excellent practicality, outstanding safety, and significant economic benefits.

[0084] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A quick-assembly tray structure for a dining chair, the dining chair comprising a back frame and a seat (5), characterized in that: Includes a dinner plate (1) and a support arm (2); The plate (1) is provided with two rearwardly extending connecting arms (01) on its rear side; The free end of the connecting arm (01) is provided with an upward-facing hook (02), and the outer bottom wall of the hook (02) is provided with a downward-protruding pressing part (03); The back frame is provided with an upper connecting part (41) and a lower connecting part (42) arranged at intervals. The space between the upper connecting part (41) and the lower connecting part (42) is available for the hook part (02) to extend into. When the hook (02) extends into the space, the hook (02) wraps around the upper connecting part (41), and the pressing part (03) presses against the lower connecting part (42) to achieve a detachable connection between the plate (1) and the back frame; The upper end of the support arm (2) is connected to the bottom of the plate (1), and the lower end of the support arm (2) is used to be detachably connected and locked to the seat (5) so as to provide auxiliary support for the plate (1) through the support arm (2).

2. The quick-assembly plate structure as described in claim 1, characterized in that: The connecting arm (01), hook (02) and pressing part (03) are integrally formed structures; Alternatively, the connecting arm (01), hook (02) and pressing part (03) are separate structures, and the hook (02) and pressing part (03) are fixed to the free end of the connecting arm (01) by means of insert injection molding, interference fit or fastener connection.

3. The quick-assembly plate structure as described in claim 1, characterized in that: The bottom of the plate is provided with a first slot (11) for the upper end of the support arm (2) to be horizontally inserted or withdrawn; The seat plate (5) is provided with a second slot (51) for the lower end of the support arm (2) to be horizontally inserted or withdrawn.

4. The quick-assembly plate structure as described in claim 3, characterized in that: The first slot (11) is provided with a first button pin (12); During the process of the upper end of the support arm (2) being horizontally inserted into the first slot (11), its end abuts against and forces the first button pin (12) to retract. When the upper end of the support arm (2) continues to be inserted past the first button pin (12), the first button pin (12) is reset and extended into the first slot (11), thereby preventing the upper end of the support arm (2) from exiting the first slot (11).

5. The quick-assembly plate structure as described in claim 4, characterized in that: A first spring is also provided, which applies a spring force to the first button pin (12) to move it into the first slot (11), thereby realizing the automatic reset of the first button pin (12).

6. The quick-assembly plate structure as described in claim 3, characterized in that: The lower end of the support arm (2) is provided with a second button pin (21); The bottom wall of the second slot (51) is provided with a pin hole (52) that penetrates the seat plate (5); When the lower end of the support arm (2) is horizontally inserted into the second slot (51) to a predetermined position, the pin head of the second button pin (21) is inserted into the pin hole (52) to prevent the lower end of the support arm (2) from exiting the second slot (51). The lock can be released by pressing the second button pin (21) to disengage it from the pin hole (52).

7. The quick-assembly plate structure as described in claim 6, characterized in that: A second spring is also provided, which applies a spring force to the second button pin (21) in the direction of moving into the pin hole (52) to realize the automatic reset of the second button pin (21).

8. The quick-assembly plate structure as described in claim 1, characterized in that: The support arm (2) is a telescopic rod structure with adjustable length.

9. The quick-assembly plate structure as described in claim 1, characterized in that: The upper end of the support arm (2) is hinged to the bottom of the plate (1), so that the support arm can rotate relative to the plate.

10. A dining chair, characterized in that: Includes the quick-assembly plate structure as described in any one of claims 1 to 9.

Images