Locking device of automatic unfolding type ultra-light folding table

Abstract

The utility model discloses a locking device of an automatic unfolding type ultra-light folding table, which comprises an upper frame beam shaped like a Chinese character'hui 'and a straight opening type bottom shell fixed on one side of the bottom end of the upper frame beam shaped like a Chinese character'hui', and two symmetrical plate-shaped shaft brackets are integrally formed on the outer wall of one side of the straight opening type bottom shell. Rotating shafts are rotationally mounted on the outer walls of the opposite sides of the two plate-shaped shaft brackets, a lower leg beam is arranged between the two rotating shafts in a sleeving manner, the lower leg beam deflects with the rotating shafts as the central axis, and an arched part is integrally formed at the end, close to the straight opening type bottom shell, of the lower leg beam. According to the utility model, when a user unfolds the table, the table can be smoothly operated and the stability is ensured; after the lower leg beam is folded, the lower leg beam can be fixed through a self-locking mechanism, looseness or instability caused by external force is avoided, hinge and locking components are designed to be hidden and are arranged in the straight opening type bottom shell and the upper frame beam shaped like the Chinese character'hui ', a user can be prevented from mistakenly touching the components in the operation process, and the operation is convenient. And the user can be effectively prevented from contacting the dangerous parts, so that the safety risk is greatly reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of folding tables, in particular to a locking device for an automatically unfolding ultra-light folding table. Background Art

[0002] The folding legs of an ultralight folding table primarily enhance portability, storage efficiency, and space utilization, while ensuring stability and safety during use. This design allows the legs to be easily stowed, significantly reducing the table's bulk and facilitating transportation and storage. This makes it particularly suitable for spaces with limited space or frequent movement, such as homes, offices, campsites, or exhibitions. Several designs are commonly used for the folding legs of ultralight folding tables, including tension hinges, lockable slides, and spring-loaded mechanisms. The hinged folding structure arranges the table legs parallel to the table top by rotating or folding, saving space; the sliding structure uses internal sliding grooves and locking mechanisms to ensure that the table legs can be stably unfolded and folded; the spring structure uses the rebound force of the spring to achieve automatic unfolding and retraction, simplifying operation. However, no matter which structural form it is, its hinged part and locking part are relatively exposed. Folding tables usually need to withstand certain external forces, and the exposed design of the hinged part and locking part can easily cause users to accidentally touch or touch them during operation, causing safety problems such as pinching and scratching. For example, when quickly folding or unfolding the table legs, if the exposed hinged part is not adequately protected, it can easily be pinched by the fingers, causing injury to the user. Utility Model Content

[0003] The purpose of the present utility model is to provide a locking device for an automatically unfolding ultra-light folding table, wherein a straight-mouth bottom shell is installed at one end of the circular upper frame beam, and a lower leg beam is installed on the outer wall of the straight-mouth bottom shell through a plate-shaped axis frame and a rotating shaft, and an elastic top insertion structure inside the straight-mouth bottom shell locks the arched portion at the end of the lower leg beam, so that the hinged part and the locking part of the lower leg beam are both located in the straight-mouth bottom shell, so as to achieve the purpose of hiding the hinged part and the locking part, thereby solving the problems raised in the above-mentioned background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a locking device for an automatically unfolding ultra-light folding table, comprising a circular upper frame beam and a straight-mouth bottom shell fixed on one side of the bottom end of the circular upper frame beam, and two symmetrical plate-like axis frames are integrally formed on the outer wall of one side of the straight-mouth bottom shell, and the outer walls on the opposite sides of the two plate-like axis frames are rotatably installed with rotating shafts, and a lower leg beam is installed between the two rotating shafts, and the lower leg beam deflects with the rotating shaft as the central axis, and an arched portion is integrally formed on one end of the lower leg beam close to the straight-mouth bottom shell, and a hollow cavity is provided on one side of the bottom end of the circular upper frame beam for the arched portion to perform a deflection action, and a tongue is slidably installed on the front and rear outer walls of the straight-mouth bottom shell, and an elastic top insertion structure for locking the arched portion is installed on one end of the tongue.

[0005] Preferably, an arc-shaped protrusion is integrally formed on one end of the surface of the meandering upper frame beam, and the arc-shaped protrusion and the straight-mouth bottom shell overlap with each other in the Z-axis projection plane.

[0006] Preferably, the circular upper frame beam and the lower leg beam are both made of hard plastic components, and through holes are provided on both sides of the top end of the circular upper frame beam.

[0007] Preferably, a blocking piece is fixed to one end of the tongue away from the straight-mouth bottom shell.

[0008] Preferably, the elastic top insertion structure includes a coil spring installed on the inner wall of one side of the straight-mouth bottom shell, a herringbone block seat fixed at the top end of the coil spring, and an insertion block installed at one end of the tongue. A slot for the insertion block to enter is provided inside the arched part, and the top end of the herringbone block seat is fixedly connected to the bottom end of the tongue.

[0009] Preferably, a convex notch is provided on the lower surface of the straight-mouth bottom shell.

[0010] Compared with the prior art, the beneficial effects of the present invention are as follows: the locking device of the automatically unfolding ultra-light folding table, the circular upper frame beam, the straight-mouth bottom shell, the plate-shaped axis frame, the rotating shaft, the lower leg beam, the arched part and the elastic top insertion structure work together, and through the sophisticated hinge, locking and elastic design, the stable unfolding of the lower leg beam and the self-locking function after folding are realized. When the user unfolds the table, it can operate smoothly and ensure stability; after folding, the lower leg beam will be fixed by a self-locking mechanism to avoid loosening or instability due to external force. The hinge and locking components are designed to be hidden and are all arranged in the straight-mouth bottom shell and the circular upper frame beam, which can prevent the user from accidentally touching these components during operation and effectively prevent the user from contacting these dangerous components, thereby greatly reducing safety risks and improving safety of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0012] Figure 2 This is a schematic diagram of the three-dimensional structure of the utility model Figure 1 ;

[0013] Figure 3 This is a schematic diagram of the three-dimensional structure of the utility model Figure 2 ;

[0014] Figure 4 This is a schematic diagram of the three-dimensional structure of the utility model Figure 3 ;

[0015] Figure 5 It is a schematic diagram of the three-dimensional cross-sectional structure of the utility model;

[0016] Figure 6 This is a schematic diagram of the three-dimensional cross-sectional structure of the utility model after the circular lower leg beam is removed;

[0017] Figure 7 It is a schematic diagram of the three-dimensional structure of the straight-mouth bottom shell of the present utility model.

[0018] In the figure: 1. circular upper frame beam; 101. arc-shaped protrusion; 102. through hole; 103. hollow cavity; 2. straight-mouth bottom shell; 3. tongue; 301. baffle; 4. plate-shaped shaft frame; 5. rotating shaft; 6. lower leg beam; 7. arched portion; 701. slot; 8. elastic top insertion structure; 801. coil spring; 802. herringbone block seat; 803. plug block. DETAILED DESCRIPTION

[0019] The following is a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0020] See also Figure 1-7 The utility model provides an embodiment of a locking device for an automatically unfolded ultra-light folding table, comprising a circular upper frame beam 1 and a straight-mouthed bottom shell 2 fixed to one side of the bottom end of the circular upper frame beam 1, and two symmetrical plate-shaped shaft frames 4 are integrally formed on the outer wall of one side of the straight-mouthed bottom shell 2, and a rotating shaft 5 is rotatably installed on the outer walls of the two plate-shaped shaft frames 4 on the opposite sides. A lower leg beam 6 is mounted between the two rotating shafts 5, and the lower leg beam 6 deflects with the rotating shaft 5 as the central axis. An arched portion 7 is integrally formed on one end of the lower leg beam 6 close to the straight-mouthed bottom shell 2, and a hollow cavity 103 is provided on one side of the bottom end of the circular upper frame beam 1 for the arched portion 7 to perform a deflection action. A convex notch is provided on the lower surface of the straight-mouthed bottom shell 2, and a tongue 3 is slidably installed on the front and rear outer walls of the straight-mouthed bottom shell 2, and an elastic top insertion structure 8 for locking the arched portion 7 is installed on one end of the tongue 3;

[0021] An arc-shaped raised portion 101 is integrally formed on one end of the surface of the meandering upper frame beam 1. The arc-shaped raised portion 101 and the straight-mouth bottom shell 2 coincide with each other on the Z-axis projection surface. The arc-shaped raised portion 101 is used to connect with the straight-mouth bottom shell 2 and form a curved surface structure at the end of the meandering upper frame beam 1 to reduce the presence of sharp corners.

[0022] The circular upper frame beam 1 and the lower leg beam 6 are both made of hard plastic. Through holes 102 are provided on both sides of the top of the circular upper frame beam 1. The circular upper frame beam 1 is bolted to the lower surface of the table top through the through holes 102 to ensure the stability of the device.

[0023] A stopper 301 is fixed to the end of the pull tongue 3 away from the straight-mouth bottom shell 2. The stopper 301 is used to prevent the pull tongue 3 from completely entering the straight-mouth bottom shell 2 under the pulling force of the elastic top insertion structure 8, making it easier for the user to pull the pull tongue 3.

[0024] The elastic top insertion structure 8 includes a coil spring 801 installed on the inner wall of one side of the straight-mouth bottom shell 2, a herringbone block 802 fixed at the top end of the coil spring 801, and an insertion block 803 installed at one end of the tongue 3. A slot 701 is provided inside the arch 7 for the insertion block 803 to enter. The top end of the herringbone block 802 is fixedly connected to the bottom end of the tongue 3. When the lower leg beam 6 is in a folded state and remains parallel to the circular upper frame beam 1, the coil spring 801 forces the herringbone block 802, the tongue 3 and the insertion block 803 to move toward the direction of the arch 7 until the insertion block 803 is plugged into the slot 701, thereby locking the lower leg beam 6 and the arch 7, so that the lower leg beam 6 and the arch 7 remain stable in the folded state and prevent the lower leg beam 6 from loosening due to external force.

[0025] When the user unlocks the folding limit of the lower leg beam 6, he manually pulls the tongue 3 and gradually moves away from the straight bottom shell 2, so that the elastic top insertion structure 8 is actuated to release the locking relationship between the elastic top insertion structure 8 and the arched portion 7, and the rotating shaft 5 connects the plate-shaped shaft frame 4 and the lower leg beam 6. The rotating shaft 5 is used to provide a hinge point for the lower leg beam 6, so that the lower leg beam 6 can rotate around the rotating shaft 5, and the plate-shaped shaft frame 4 helps to stabilize the unfolding action of the lower leg beam 6 to avoid excessive shaking or instability during the unfolding process. The user can use a certain amount of force or manual operation to unfold the lower leg beam 6 from the folded state and gradually return to the supporting position. When the lower leg beam 6 begins to unfold, the arched portion 7 will enter the circular upper frame beam 1 from the straight bottom shell 2 through the hollow cavity 103 until the lower leg beam 6 is fully unfolded and remains stable. At this time, the table board can withstand normal use pressure, ensuring safety in daily use;

[0026] When the lower leg beam 6 needs to be folded and retracted, the user needs to manually operate the tongue 3 to prevent the elastic top insertion structure 8 from blocking the return of the arched part 7. As the lower leg beam 6 begins to fold, the arched part 7 will fold back along the original folding trajectory until it returns to the straight-mouth bottom shell 2. The stabilizing effect of the plate-shaped axis frame 4 and the rotating shaft 5 makes the folding process smooth and unobstructed. After the lower leg beam 6 and the arched part 7 are folded back, the user releases the tongue 3, and the locking end of the elastic top insertion structure 8 automatically enters the arched part 7, thereby ensuring that the lower leg beam 6 will not accidentally loosen during the folding process.

Claims

1. A locking device for an automatically deployable ultralight folding table, characterized by: The invention comprises a circular upper frame beam (1) and a straight-mouth bottom shell (2) fixed at one side of the bottom end of the circular upper frame beam (1), and two symmetrical plate-shaped shaft frames (4) are integrally formed on the outer wall of one side of the straight-mouth bottom shell (2), and a rotating shaft (5) is rotatably installed on the outer walls of the two plate-shaped shaft frames (4) on the opposite sides, and a lower leg beam (6) is set between the two rotating shafts (5), and the lower leg beam (6) deflects with the rotating shaft (5) as the central axis, and an arched portion (7) is integrally formed on one end of the lower leg beam (6) close to the straight-mouth bottom shell (2), and a hollow cavity (103) for the arched portion (7) to perform a deflection action is provided on one side of the bottom end of the circular upper frame beam (1), and a tongue (3) is slidably installed on the front and rear outer walls of the straight-mouth bottom shell (2), and an elastic top insertion structure (8) for locking the arched portion (7) is installed at one end of the tongue (3).

2. The locking device of the automatically deployable ultralight folding table according to claim 1, characterized in that: An arc-shaped raised portion (101) is integrally formed on one end of the surface of the circular upper frame beam (1), and the arc-shaped raised portion (101) and the straight-mouth bottom shell (2) overlap with each other on the Z-axis projection surface.

3. The locking device of the automatically deployable ultralight folding table according to claim 1, characterized in that: The circular upper frame beam (1) and the lower leg beam (6) are both made of hard plastic components, and through holes (102) are provided on both sides of the top of the circular upper frame beam (1).

4. The locking device for an automatically deployable ultralight folding table according to claim 1, characterized in that: A blocking piece (301) is fixed to one end of the tongue (3) away from the straight-mouth bottom shell (2).

5. The locking device for an automatically deployable ultralight folding table according to claim 1, characterized in that: The elastic top insertion structure (8) comprises a coil spring (801) mounted on the inner wall of one side of the straight-mouth bottom shell (2), a herringbone-shaped stopper (802) fixed to the top end of the coil spring (801), and an inserting block (803) mounted on one end of the tongue (3); a slot (701) for the inserting block (803) to enter is provided inside the arched portion (7); and the top end of the herringbone-shaped stopper (802) is fixedly connected to the bottom end of the tongue (3).

6. The locking device for an automatically deployable ultralight folding table according to claim 1, characterized in that: The lower surface of the straight-mouth bottom shell (2) is provided with a convex-shaped notch.

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