A tea table with adjustable desktop area

Abstract

The utility model discloses a table top area adjustable tea table belongs to tea table technical field, aims at solving the problem of traditional tea table area fixed or complex structure, easy to jam, height is not consistent etc. It includes the main support of the type and the extension frame, and the main support of the type is equipped with the first groove and the pressure bar with second groove, and the extension frame is equipped with the support plate, the extension board with first inclined groove, the support rod with spring, the fixed frame with second inclined groove, and there are dovetail limit structure, roller and limit block. Through push and pull extension frame, utilize "inclined plane extrusion - spring reset " and realize extension board lift, and limit structure guarantees that table top height is consistent, and roller reduces friction, and inclined plane friction prevents arbitrary sliding. The tea table can adjust the area flexibly, adapts to multiple scenes, and the operation is stable, the structure is reliable, and the use experience and safety are improved.

Description

Technical Field

[0001] This utility model relates to the field of coffee table technology, specifically a coffee table with an adjustable tabletop area. Background Technology

[0002] In existing technologies, traditional coffee tables typically have a fixed tabletop area, which cannot be flexibly adjusted to meet actual usage needs. When more tea sets, snacks, or other items need to be placed during family gatherings or visits from relatives and friends, a fixed-size coffee table often falls short, resulting in clutter. Conversely, if an overly large coffee table is chosen, it occupies too much space when there are fewer people using it, affecting the tidiness of the home environment and ease of movement. Furthermore, some extendable coffee tables have complex designs, prone to jamming and inconsistent tabletop height during extension, leading to a poor user experience. Therefore, there is an urgent need for a coffee table with a simple structure, convenient operation, and stable tabletop area adjustment to address the shortcomings of existing technologies. Utility Model Content

[0003] The purpose of this invention is to provide a coffee table with an adjustable tabletop area to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a coffee table with an adjustable desktop area, comprising a U-shaped main support and an extension frame, wherein the extension frame is disposed on one side of the U-shaped main support;

[0005] The first bevel groove is provided at one end of the C-shaped main support, and a pressure rod is fixed on the inner wall of the C-shaped main support, and a second bevel groove is provided at the other end of the pressure rod.

[0006] A support plate is fixed to one side of the extension frame near the C-shaped main support. Several extension plates are evenly spaced on the top of the support plate. The top of the extension plate has a matching first inclined groove corresponding to the first bevel groove. Support rods are fixed to both ends of the bottom of the extension plate. The bottom of the support rod slides through the support plate. A spring is sleeved on the rod wall between the extension plate and the support plate. A fixing frame is fixedly connected to the center of the bottom of the extension plate. A matching second inclined groove is opened on the inner bottom wall of the fixing frame corresponding to the second bevel groove.

[0007] Preferably, the bottom of the extension frame is provided with a groove, and a roller is rotatably connected inside the groove via a pin.

[0008] Preferably, a dovetail limiting rod is fixedly connected to the inner wall of the C-shaped main support, and a matching dovetail limiting groove is opened on the support plate corresponding to the dovetail limiting rod, and the dovetail limiting rod is slidably inserted into the inside of the dovetail limiting groove.

[0009] Preferably, a limiting block is fixedly connected to one end of the support rod that passes through the support plate, and the distance between the limiting block and the support plate is the same as the thickness of the U-shaped main bracket.

[0010] Compared with the prior art, the beneficial effects of this utility model are:

[0011] The desktop area is flexible and adjustable to suit various scenarios: The desktop area can be expanded or reduced by sliding the extension rack, which can meet the needs of placing a large number of items when there are many people gathering, and reduce the space occupied during daily use, thus adapting to the usage needs of different home scenarios.

[0012] Operation is smooth and convenient, without any jamming: With the guidance of the dovetail limit rod and dovetail limit groove, the extension frame can only slide smoothly in the horizontal direction, avoiding separation or deviation; at the same time, the roller at the bottom of the extension frame reduces friction with the ground, making the pushing and pulling process more effortless and solving the problem of jamming in traditional extendable structures.

[0013] Consistent desktop height ensures stability: Through the cooperation of the limiting block and the support plate, as well as the reset action of the spring, the extension plate can be flush with the top surface of the U-shaped main support after it is raised, ensuring that the expanded desktop is flat and will not tip over due to height difference when placing items, thus improving safety.

[0014] Reliable structure and long service life: The extension plate is raised and lowered by a mechanical cycle of "sloping extrusion-spring reset". With multiple sets of sloping contact (first bevel groove and first inclined groove, second bevel groove and second inclined groove) to form a stable force transmission structure, reducing wear of individual components; at the same time, the spring force is reasonably designed to ensure the normal lifting and lowering function of the extension plate for a long time and extend the service life of the product.

[0015] Prevents accidental slippage while balancing stability and operability: The friction generated by the inclined contact and the spring preload work together to ensure that the extension frame can stay stably in any position when there is no external force, avoiding slippage caused by slight vibration or accidental contact; while when an appropriate external force is applied, it can be easily pushed and pulled, thus balancing stability and ease of operation. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the present invention. Figure 1 ;

[0017] Figure 2 This is a schematic diagram of the structure of the present invention. Figure 2 ;

[0018] Figure 3 This is a schematic diagram of the structure of this utility model in use;

[0019] Figure 4 This is a cross-sectional view of the present invention in use;

[0020] Figure 5 This is a schematic diagram of the structure of the U-shaped main support in this utility model;

[0021] Figure 6 This is a schematic diagram of the extension frame in this utility model.

[0022] In the diagram: 1. C-shaped main support; 11. First bevel groove; 12. Dovetail limiting rod; 13. Pressure rod; 14. Second bevel groove; 2. Extension frame; 21. Support plate; 22. Dovetail limiting groove; 23. Extension plate; 24. First inclined groove; 25. Support rod; 26. Spring; 27. Limiting block; 28. Roller; 29. ​​Fixing frame; 210. Second inclined groove. Detailed Implementation

[0023] 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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figure 1-6 The present invention provides the following technical solution: a coffee table with an adjustable tabletop area, comprising a U-shaped main support 1 and an extension frame 2, wherein the extension frame 2 is disposed on one side of the U-shaped main support 1;

[0025] The first bevel groove 11 is provided at one end of the C-shaped main support 1, and a pressure rod 13 is fixed on the inner wall of the C-shaped main support 1, and a second bevel groove 14 is provided at the other end of the pressure rod 13.

[0026] A support plate 21 is fixed to one side of the extension frame 2 near the C-shaped main support 1. Several extension plates 23 are evenly spaced on the top of the support plate 21. The top of the extension plate 23 is provided with a first inclined groove 24 that matches the first bevel groove 11. Support rods 25 are fixed to both ends of the bottom of the extension plate 23. The bottom of the support rods 25 slides through the support plate 21. A spring 26 is sleeved on the rod wall of the support rod 25 between the extension plate 23 and the support plate 21. A fixing frame 29 is fixedly connected to the center of the bottom of the extension plate 23. A second inclined groove 210 that matches the second bevel groove 14 is provided on the inner bottom wall of the fixing frame 29.

[0027] Preferably, the bottom of the extension frame 2 is provided with a groove, and the inside of the groove is rotatably connected to a roller 28 via a pin. The roller 28 makes the extension frame 2 easier to push and pull, and can prevent the bottom of the extension frame 2 from directly rubbing against the ground.

[0028] Preferably, a dovetail limiting rod 12 is fixedly connected to the inner wall of the C-shaped main support 1, and a matching dovetail limiting groove 22 is opened on the support plate 21 corresponding to the dovetail limiting rod 12. The dovetail limiting rod 12 is slidably inserted into the inside of the dovetail limiting groove 22. The setting of the dovetail limiting rod 12 and the dovetail limiting groove 22 can effectively prevent the support plate 21 from separating from the C-shaped main support 1.

[0029] Preferably, the end of the support rod 25 that passes through the support plate 21 is fixedly connected to the limiting block 27, and the distance between the limiting block 27 and the support plate 21 is the same as the thickness of the C-shaped main support 1. The setting of the limiting block 27 can effectively limit the lifting height of the extension plate 23 by the spring 26, avoid the extension plate 23 from being lifted too much, so that the extension plate 23 is at the same height as the C-shaped main support 1 after being lifted, and ensure that the height of the upper surface of the coffee table is consistent.

[0030] Specifically:

[0031] Core components and initial state

[0032] Basic structure: It consists of a fixed U-shaped main support 1 and a sliding extension frame 2. In its initial state, the extension frame 2 is attached to one side of the U-shaped main support 1, and the table area is the basic area of ​​the U-shaped main support 1.

[0033] Key mating components:

[0034] The C-shaped main support 1 is provided with a first bevel groove 11 and a pressure rod 13 with a second bevel groove 14;

[0035] The extension frame 2 is equipped with a support plate 21, a liftable extension plate 23 (with a first inclined groove 24 on the top), a support rod 25 with a spring 26, and a fixing frame 29 with a second inclined groove 210.

[0036] The dovetail limiting rod 12 and the dovetail limiting groove 22 restrict the extension frame 2 to slide only in the horizontal direction to avoid separation; the roller 28 reduces friction when the extension frame 2 moves.

[0037] The process of increasing the desktop area (pulling the extension rack 2)

[0038] Relieving the pressure: Pull the extension frame 2 outward. Guided by the dovetail limiting rod 12 and the dovetail limiting groove 22, the extension frame 2 smoothly moves away from the C-shaped main support 1. At this time, the fixing frame 29 and the extension plate 23 gradually break free from the pressure of the pressure rod 13 and the C-shaped main support 1.

[0039] Spring 26 pushes extension plate 23 to rise: As the pressure is released, spring 26 on support rod 25 returns to its original state from compression and pushes extension plate 23 upward.

[0040] Limiting ensures consistent height: During the ascent of the extension plate 23, the limiting block 27 at the bottom of the support rod 25 contacts the support plate 21 (because the distance between the limiting block 27 and the support plate 21 is equal to the thickness of the C-shaped main support 1), limiting the extension plate 23 from continuing to rise, so that its top surface is flush with the top surface of the C-shaped main support 1, forming a continuous enlarged tabletop.

[0041] The process of reducing desktop area (pushing the extension rack 2)

[0042] Inclined re-extrusion: The extension frame 2 is pushed inward, and the roller 28 reduces the moving resistance, bringing the extension frame 2 closer to the U-shaped main support 1. At this time, the first bevel groove 11 contacts the first inclined groove 24, and the second bevel groove 14 contacts the second inclined groove 210, generating a downward force through the mutual extrusion of the inclined surfaces.

[0043] Extension plate 23 descends and is stored: Under the pressure of the inclined plane, extension plate 23 moves downward against the elastic force of spring 26, support rod 25 moves down accordingly, and spring 26 is recompressed.

[0044] Return to initial state: The extension plate 23 descends to fit the support plate 21 and is completely stored under the U-shaped main bracket 1, restoring the desktop area to its initial base area.

[0045] This coffee table changes the inclined surface's engagement state by pushing and pulling an extension frame. Utilizing the mechanical cycle of "inclined surface compression - spring reset," the extension panel can be raised and lowered. Combined with a limiting structure, it ensures consistent tabletop height and smooth sliding, ultimately achieving flexible adjustment of the tabletop area.

[0046] Explanation of the elasticity of spring 26

[0047] Spring 26 is the core power component that ensures the normal lifting and lowering of extension plate 23. Its elasticity design must meet the following requirements to avoid the extension plate 23 failing to function properly due to insufficient elasticity:

[0048] The elastic force must overcome the core resistance:

[0049] The elastic force of spring 26 must be at least greater than the sum of the two resistance components:

[0050] The weight of the extension plate 23 itself (including the total weight of the extension plate and components such as the mounting bracket 29 fixed to its bottom);

[0051] The sliding friction between the support rod 25 and the support plate 21 (the friction generated when the support rod 25 passes through the support plate 21 and the contact between the rod wall and the plate hole).

[0052] Ensure the lifting height meets the standard:

[0053] When the extension frame 2 is fully extended, the spring 26 needs to push the extension plate 23 up to a position flush with the top surface of the U-shaped main support 1. At this time, the limiting block 27 contacts the support plate 21 to form a limit (the distance between the limiting block 27 and the support plate 21 is equal to the thickness of the U-shaped main support 1). The elastic force of the spring 26 needs to ensure that the extension plate 23 can be stably maintained at this height and will not sink due to its own weight or slight external forces (such as the pressure of placed items). Therefore, the elastic force needs to reserve a certain margin to cope with the additional load during dynamic use.

[0054] If the elasticity is insufficient, the extension board 23 may not be able to rise to the specified height, or it may sink due to gravity / external force after being raised, causing the desktop to be uneven, making it impossible to place items normally and losing the extension function.

[0055] Explanation of the friction between the extension plate 23 and the C-shaped main support 1

[0056] The friction between the extension plate 23 and the C-shaped main support 1 is key to preventing the extension frame 2 from being pulled out arbitrarily, and this is mainly achieved through the following structure:

[0057] Friction occurs during contact:

[0058] When the extension frame 2 is in a non-limit position (i.e., neither fully retracted nor fully extended), its U-shaped main support 1 and extension plate 23 remain in contact. At the same time, the pressure rod 13 also contacts the fixing frame 29, further increasing the friction surface.

[0059] The positioning effect of friction:

[0060] The magnitude of the frictional force generated by contact is related to the following factors:

[0061] Contact surface roughness: By appropriately roughening the contact surface (such as retaining a certain texture), the coefficient of friction can be enhanced, thereby improving positioning stability.

[0062] Spring preload: When the extension frame 2 is not fully extended, the spring 26 is in a semi-compressed state, exerting an upward thrust on the extension plate 23, which indirectly increases the normal pressure between the inclined planes, thereby increasing the friction.

[0063] This friction ensures that: when no external force is applied, the extension rack 2 will not slide arbitrarily due to slight vibration or accidental touch; only when sufficient external force (greater than the friction force) is applied can the extension rack be pushed or pulled to adjust the desktop area, thus balancing stability and operability.

[0064] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can 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 coffee table with an adjustable tabletop area, characterized in that, It includes an inverted main support (1) and an extension frame (2), wherein the extension frame (2) is disposed on one side of the inverted main support (1); The first bevel groove (11) is provided at one end of the C-shaped main support (1), and a pressure rod (13) is fixed on the inner wall of the C-shaped main support (1), and a second bevel groove (14) is provided at the other end of the pressure rod (13). The extension frame (2) is fixed with a support plate (21) on one side near the C-shaped main support (1). Several extension plates (23) are evenly spaced on the top of the support plate (21). The top of the extension plate (23) is provided with a first inclined groove (24) corresponding to the first bevel groove (11). Support rods (25) are fixed at both ends of the bottom of the extension plate (23). The bottom of the support rod (25) slides through the support plate (21). A spring (26) is sleeved on the rod wall between the extension plate (23) and the support plate (21) of the support rod (25). A fixing frame (29) is fixedly connected at the center of the bottom of the extension plate (23). A second inclined groove (210) corresponding to the second bevel groove (14) is provided on the inner bottom wall of the fixing frame (29).

2. The coffee table with adjustable tabletop area according to claim 1, characterized in that: The bottom of the extension frame (2) is provided with a groove, and the inside of the groove is rotatably connected to a roller (28) via a pin.

3. A coffee table with an adjustable tabletop area according to claim 1, characterized in that: A dovetail limiting rod (12) is fixedly connected to the inner wall of the C-shaped main support (1). A matching dovetail limiting groove (22) is opened on the support plate (21) corresponding to the dovetail limiting rod (12), and the dovetail limiting rod (12) is slidably inserted into the inside of the dovetail limiting groove (22).

4. A coffee table with an adjustable tabletop area according to claim 1, characterized in that: The support rod (25) is fixedly connected to a limiting block (27) at one end of the support plate (21), and the distance between the limiting block (27) and the support plate (21) is the same as the thickness of the U-shaped main bracket (1).

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