KR102815135B1 - Structural reinforcement table - Google Patents

Abstract

The present invention relates to a structural reinforcement table. It comprises: a frame having a rectangular frame shape and having an upper fixing slit formed on an upper surface and a lower fixing slit formed on a lower surface; an upper plate formed by folding a plate-like member having a predetermined thickness, covering an upper surface of the frame and having an insertion bend portion on an edge portion that fits into the upper fixing slit; a lower plate formed by folding a plate-like member having a predetermined thickness, covering a lower surface of the frame and having an insertion bend portion on an edge portion that fits into the lower fixing slit; an upper plate having a honeycomb panel built into the inside of the frame and in close contact with the upper plate and the lower plate; leg connectors fixed to the lower surface of the four corners of the upper plate; and a plurality of legs that support the upper plate by connecting an upper portion to the leg connector and extending downward.
The structural reinforcement table of the present invention, which is constructed as described above, has a simple and slim structure with the bridge connecting the legs omitted, but has a stable load-bearing capacity.

Description

{Structural reinforcement table}

The present invention relates to a table providing a flat work surface, and more specifically, to a structurally reinforced table having a stable load-bearing capacity despite having a slim structure.

A table is a support consisting of a horizontal table top and legs that support the table top, and is usually made of wood, metal, or synthetic resin. Tables are used as dining tables, desks, or for various purposes. In addition, recent tables are often designed to be slimmer and lighter, moving away from the dull and heavy forms of the past. For example, they are changing from thick and heavy ones that are difficult to handle to ones that are light and simple but have excellent interior effects.

However, as the table is made slimmer, the structure tends to become weaker, so a design for reinforcing the structure is also applied. There are various types of structural reinforcing materials, and among them, the bridge connects the legs and prevents the table top from collapsing.

However, bridges have the disadvantage of reducing the aesthetic appeal of the lower part of the table top. For example, by connecting the legs, the structural strength is improved, but the simplicity of the space under the table top is reduced. A table with a simpler shape and structural stability is required by omitting the bridge.

As a background technology related to tables, domestic patent registration No. 10-1511373 (Assembly-type table with reinforced support) has been disclosed.

The disclosed table comprises: a plate including a plate groove configured to support the load of the table top for use as a household dining table or office table, and configured to allow a fixing means to be inserted and coupled into the upper portion; a fastening portion configured to be coupled to the lower portion of the plate and coupled with a support frame so as not to have a predetermined gap; an upper fixing groove configured to fix the plate and the support frame; a side fixing groove configured to couple a side of the fixing frame and a side of the support frame; a first fastening groove configured to be formed at the upper portion and configured to allow a fixing means to be inserted and fastened to the plate groove; and a second fastening groove configured at the lower portion and configured to allow a fixing means to be inserted; a support frame including a frame supporter configured to be coupled to each edge of the plate and not to be worn or damaged due to a load of an article generated from the plate, a frame supporter configured to be integrally formed and to perform the function of a desk leg, and a support bracket configured to support and fasten the plate by having the fixing frame inserted therein.

The present invention was created to solve the above problems, and the purpose of the present invention is to provide a structurally reinforced table having a stable load-bearing capacity despite having a simple and slim structure by omitting the bridge connecting the legs.

As a solution to the problem for achieving the above object, the structural reinforcement table of the present invention comprises: a frame having a square frame shape and having an upper fixing slit formed on an upper surface and a lower fixing slit provided on a lower surface; an upper plate formed by folding a plate-like member having a predetermined thickness, covering an upper surface of the frame, and having an insertion bend portion on an edge portion that fits into the upper fixing slit; a lower plate formed by folding a plate-like member having a predetermined thickness, covering a lower surface of the frame, and having an insertion bend portion on an edge portion that fits into the lower fixing slit; an upper plate having a honeycomb panel built into the inside of the frame and in close contact with the upper plate and the lower plate; leg connectors fixed to the lower surface of the four corners of the upper plate; and a plurality of legs that support the upper plate by connecting an upper portion to the leg connector and extending downward.

In addition, as a solution to the problem for achieving the above object, another structural reinforcement table of the present invention comprises: a frame having a square frame shape, an upper fixing slit formed on an upper surface, and a lower fixing slit formed on a lower surface; an upper plate formed by folding a plate-like member having a predetermined thickness, covering an upper surface of the frame, and having an insertion bend portion in a rim portion for fitting into the upper fixing slit; a lower plate formed by folding a plate-like member having a predetermined thickness, covering a lower surface of the frame, and having an insertion bend portion in a rim portion for fitting into the lower fixing slit; an upper plate having a honeycomb panel built into the inside of the frame and in close contact with the upper plate and the lower plate; leg connectors fixed to the lower surface of the four corners of the upper plate; a vertical leg having an upper portion joined to the leg connector and extending downward to support the upper plate and having a plurality of open slits; a pair of lower beams connecting lower portions of the legs and having a plurality of open slits open upward; The present invention relates to a perpendicularity sensor for detecting a change in an angle between the top plate and the legs; a controller connected to the perpendicularity sensor and outputting a signal when a change in the angle is detected; a traction roll built into the inner lower part of each leg; a roll driving unit that is operated by the controller and rotates the traction roll; an anchor pin built into the inner upper part of each leg and providing support; a reinforcing wire having one end fixed to the anchor pin inside one leg and the other end wound around the traction roll inside the other leg, the reinforcing wire being wound around the traction roll and being tensioned tightly to reinforce the supporting force of the leg; a display unit that displays the tensile state and tensile stress of each reinforcing wire; a manual switch that manually operates the roll driving unit; and a wire hiding means that is operated when the reinforcing wire is not in operation and hides the reinforcing wire inside the leg and the lower beam.

And, the wire concealing means has an upper roll and a lower roll arranged vertically inside each leg, a recovery wire having one end connected to a reinforcing wire through a wire holder, rising past the lower part of the lower roll and then hanging over the upper roll, and a weight fixed to the other end of the recovery wire, sagging downward due to its own weight and pulling the wire holder toward the lower roll.

In addition, the roll driving part operates in a state where the reinforcing wire is tautly pulled to fix the traction roll, and further includes a gear wheel having the same central axis of rotation as the take-up roll and provided on the side of the take-up roll and having an outer peripheral tooth portion formed on the outer surface, a ratchet block that is installed so as to be able to rise and fall on the upper portion of the gear wheel and has a fixed tooth portion that can mesh with the outer peripheral tooth portion, a lever that is fixed to the ratchet block and extends to the outside of the leg and is held by hand when lifting the ratchet block upward, and a spring that elastically supports the ratchet block downward toward the gear wheel.

The structural reinforcement table of the present invention, which is constructed as described above, has a simple and slim structure with the bridge connecting the legs omitted, but has a stable load-bearing capacity.

FIG. 1 is a cutaway perspective view of a structural reinforcement table according to a first embodiment of the present invention.
Fig. 2 is a partial cross-sectional view for explaining the assembly structure of the frame in the structural reinforcement table shown in Fig. 1.
Figure 3 is a cross-sectional view taken along line AA of Figure 1.
FIGS. 4 and 5 are perspective views of a structural reinforcement table according to a second embodiment of the present invention.
Figure 6 is a cross-sectional view taken along line BB of Figure 4.
FIGS. 7 and 8 are drawings for explaining the structural reinforcement operation of the structural reinforcement table illustrated in FIG. 4.
Figures 9 and 10 are drawings for explaining the tension-maintaining device of the reinforcing wire shown in Figure 8.

Hereinafter, one embodiment according to the present invention will be described in more detail with reference to the attached drawings.

Fig. 1 is a cutaway perspective view of a structural reinforcement table (10) according to a first embodiment of the present invention, and Fig. 2 is a partial cross-sectional view for explaining the assembly structure of a frame (17) in the structural reinforcement table illustrated in Fig. 1. In addition, Fig. 3 is a cross-sectional view taken along line A-A of Fig. 1.

As shown, the structural reinforcement table (10) according to the first embodiment has a basic structure of a top plate (11), a leg connector (19), and a leg (21).

The top plate (11) is a horizontal square plate having a certain thickness and includes a frame (17), an upper plate (12), a lower plate (13), and a honeycomb panel (15).

The frame (17) is a square frame in which four straight frame members (17a) are connected at right angles. An edge connector (17d) is used to connect the frame members (17a). The edge connector (17d) is a connecting member having a shape of approximately the letter L, and is inserted and fixed into a connecting space (17e) at the end of an adjacent frame member (17a). The connection of the edge connector (17d) to the frame member (17a) may be by bolting or adhesive fixation.

An upper fixing slit (17b) and a lower fixing slit (17c) are provided on the upper and lower surfaces of each frame member (17a). The upper fixing slit (17b) and the lower fixing slit (17c) are straight grooves having a certain width and depth. The upper fixing slit (17b) and the lower fixing slit (17c) form a square when the ends meet each other while the four frame members (17a) are interconnected. The upper fixing slit (17b) accommodates the insertion bend portion (12a) of the upper plate (12), and the lower fixing slit (17c) accommodates the insertion bend portion (13a) of the lower plate (13).

The upper plate (12) is formed by bending a metal plate member having a certain thickness and covers the upper surface of the frame (17). An insertion bend portion (12a) is formed on the edge of the upper plate (12). The insertion bend portion (12a) is a portion in which the edge of the upper plate (12) is bent downward at a right angle and is inserted and fixed into the interior of the upper fixing slit (17b). The method of joining the insertion bend portion (12a) to the upper fixing slit (17b) may be adhesive bonding.

The lower plate (13) is also formed by folding a metal plate of a certain thickness and covers the lower surface of the frame (17). In addition, an insertion bend portion (13a) is formed on the edge of the lower plate (13). The insertion bend portion (13a) is inserted and joined to the lower fixing slit (17c) of the frame. The method of joining the lower fixing slit (17c) to the insertion bend portion (13a) may be a bonding method using an adhesive.

The honeycomb panel (15) is a plate-shaped member having a hexagonal structure and a certain thickness, and is mounted in the inner space of the frame (17). The upper and lower surfaces of the honeycomb panel (15) can be fixed to the upper and lower plates (12, 13) by adhesive methods. In addition, the outer surface of the honeycomb panel (15) is fixed to the frame (17) by adhesive.

The leg connector (19) is a connecting member that is joined to the bottom surface of the four corners of the top plate (11). The leg connector (19) has a certain cross-sectional shape in the longitudinal direction and is perpendicular to the bottom surface of the top plate (11). The method of joining the leg connector (19) to the top plate (11) can be applied in various ways, and may also be joined by a bolting method.

The upper part of the leg (21) is connected to the leg connector (19). With the leg connector (19) inserted into the upper part of the leg (21), the leg (21) and the leg connector (19) are connected. The leg (21) is connected to the leg connector, extends downward, and supports the upper plate (11).

FIGS. 4 and 5 are perspective views of a structural reinforcement table (30) according to a second embodiment of the present invention, and FIG. 6 is a cross-sectional view taken along line B-B of FIG. 4. In addition, FIGS. 7 and 8 are drawings for explaining the structural reinforcement operation of the structural reinforcement table illustrated in FIG. 4, and FIGS. 9 and 10 are drawings for explaining the tension maintenance device of the reinforcing wire illustrated in FIG. 8.

Hereinafter, the same drawing symbols as the above-mentioned drawing symbols indicate the same elements with the same functions, and a repeated description thereof will be omitted.

As shown, the structural reinforcement table (30) according to the second embodiment comprises a top plate (11), a leg connector (19), a leg (31), a lower beam (33), a right angle sensor (45), a controller (47), a traction roll (36), a roll driving unit, an anchor pin (67), a reinforcing wire (55), a manual switch (43), a display unit (41), a wire concealment means, and a tension maintenance device (50).

The top plate (11) and leg connector (19) have the same structure as described in the first embodiment.

The legs (31) are hollow columns and have two open slits (31a) each. The open slits (31a) are mutually parallel and open the internal space of the legs (31) toward the bottom of the top plate (11). The legs are paired, and the paired legs (31) are connected by a lower beam (33). The lower beam (33) is a hollow beam and provides two rows of open slits (33a) that are open toward the top. The open slits (31a) of the legs (31) and the open slits (33a) of the lower beam (33) meet and are connected to each other.

The right angle sensor (45) is a sensor that detects a change in the angle between the top plate (11) and the leg (31). In the present embodiment, the angle between the leg (31) and the top plate (11) is 90 degrees, and when the angle of the leg with respect to the top plate (11) becomes larger or smaller than 90 degrees, the right angle sensor (45) detects the change in angle. For example, when an excessive load is loaded on the table (30) and the leg (31) slightly shakes or tilts to the side, it detects that fact.

The detection information of the right angle sensor (45) is transmitted to the controller (47). The controller (47) is installed on the lower surface of the top plate (11), is connected to the right angle sensor (45), and operates the motor (35), which is a roll drive unit, when a change in the angle is detected.

In addition, a display unit (41) and a manual switch (43) are provided on the upper part of the leg (31) where the motor (35) is installed. The display unit (41) displays the angle value detected by the right angle sensor (45). The user can check whether the angle between the leg (31) and the top plate (11) is at a right angle through the display unit (41).

In addition, the display unit (41) displays the tensile state of the reinforcing wire (55) and the tensile stress. That is, it displays the state of whether the reinforcing wire (55) is concealed as in Fig. 7 or pulled taut as in Fig. 8, and also displays the tensile stress applied to the reinforcing wire (55) in a taut state.

The manual switch (43) is a button that the table user directly operates. When the manual switch (43) is pressed once, the motor (35) pulls the reinforcing wire (55) (regardless of the angle between the leg (31) and the top plate (11)) so that the reinforcing wire (55) becomes taut. When the manual switch (43) is pressed once more, the traction roller (36) rotates in reverse and the reinforcing wire (55) is hidden inside the leg (31) and the lower beam (33). It goes without saying that the switch (43) is connected to the controller (47).

Meanwhile, a traction roll (36) is installed at the inner lower part of each leg (31). The traction roll (36) is a spool, so to speak, that winds the reinforcing wire (55). The traction roll (36) receives the rotational torque of the motor (35) and can rotate in both directions.

The traction rolls (36) accommodated in the neighboring legs are connected via the electric shaft (37). The electric shaft (37) is a horizontally extended shaft that receives the rotational torque of the motor (35) and rotates about its axis. In this embodiment, since the motor (35) is applied to two of the four legs, two electric shafts (37) are applied to drive the four traction rolls (36). However, if the motors (35) are installed in each leg, the electric shafts (37) will be unnecessary.

And an anchor pin (67) is fixed to the inner upper side of each leg (31). The anchor pin (67) is a member that supports a hook (55c) by hanging it, as shown in Fig. 7. The higher the height of the anchor pin (67) in the leg (31), the better.

The reinforcing wire (55) is a tensile wire made of steel wire and has the hook (55c) at one end. The hook (55c) is detachably connected to the anchor pin (67). One end of the reinforcing wire (55) is supported on the anchor pin (67) via the hook (55c). The other end of the reinforcing wire (55) is wound around a traction roll (36) (inside the other leg (31) forming a pair).

For example, as shown in Fig. 7, the reinforcing wire (55) wound around the traction roll (36) inside the left leg in the drawing is supported by being hooked onto the anchor pin (67) provided on the right leg. Similarly, the end of the reinforcing wire (55) wound around the traction roll inside the right leg in the drawing is connected to the anchor pin of the left leg forming a shingle. The 'paired legs' are the legs connected through the lower beam (33).

The tensioned reinforcing wire (55) extends diagonally as shown in Fig. 5 and reinforces the supporting force of the leg (31). That is, it maintains the gap between the wound traction roll (36) and the anchor pin (67). If the leg (31) tilts to one side, the gap between the traction roll (36) and the anchor pin (67) increases, and by maintaining the gap, the leg is prevented from tilting. This is the same role as a bridge on a general table.

The wire concealment means is operated when the reinforcing wire (55) is unnecessary, and serves to conceal the reinforcing wire inside the leg (31) and the lower beam (33). 'When the reinforcing wire is not operated' means when the angle between the leg (31) and the upper plate (11) is maintained at a right angle, so that reinforcement of the leg (31) is not necessary. When the leg (31) stably supports the upper plate, the reinforcing wire (55) is unnecessary, so the wire concealment means is used to conceal the reinforcing wire (55) inside the lower beam (33) and the leg (31).

The wire concealment means comprises an upper roll (63), a lower roll (61), a recovery wire (57), and a weight (65). The wire concealment means is installed in each leg (31).

The upper roll (63) and the lower roll (61) are idle rollers arranged up and down inside the bridge and guide the longitudinal progress of the recovery wire (57).

The recovery wire (57) has one end connected to the reinforcing wire (55) through the wire holder (55a), and the other end is combined with the weight (65) inside the leg (31). The recovery wire (57) rises after passing through the lower part of the lower roll (61) and is subject to the action of the weight (65) while being hung on the upper roll (63). The weight (67) sags in the direction of arrow g under the influence of gravity and pulls the recovery wire (57) in the direction of arrow a. The wire holder (55a) is pulled toward the lower roll (61) by the weight (65). In other words, the reinforcing wire (55) is pulled by the recovery wire (57) and concealed inside the lower beam (33) and the leg (31).

Meanwhile, the tension maintenance device (50) operates to fix the traction roll (36) while the motor (35) pulls the reinforcing wire (55) taut in the direction of arrow a of Fig. 8. In other words, it functions as a brake that prevents the reverse rotation of the traction roll (36) and maintains the tension state of the reinforcing wire (55). The tension maintenance device (50) is also built into each leg (31).

The tension maintenance device has the configuration shown in FIGS. 8 and 9.

As shown in FIGS. 8 and 9, the tension maintenance device (50) has a gear wheel (38), a housing (51), a ratchet block (52), a lever (52a), and a spring (53).

The gear wheel (38) is a disk-shaped member fixed between the traction roll (36) and the motor (35) and has a gear portion (38a) on its outer surface. The rotational center axis of the gear wheel (38) is the electric shaft (37). The traction roll (36) and the gear wheel (38) share one electric shaft (37) and rotate simultaneously.

The housing (51) is a case provided on the vertical upper side of the gear wheel (38) and accommodates a spring (53) and a part of the ratchet block (52). The internal space of the housing (51) is opened forward through a vertical hole (31c).

The ratchet block (52) is a block-shaped member supported so as to be able to ascend and descend in the housing (51). The ratchet block (52) is partially accommodated in the housing (51). In addition, a fixed tooth portion (52c) is provided on the bottom surface of the ratchet block (52). The fixed tooth portion (52c) is a portion that engages with the tooth portion (38a) of the gear wheel (38). When the fixed tooth portion (52c) engages with the tooth portion (38a), the gear wheel (38) cannot rotate in the direction of arrow k. Rotation in the direction of arrow k is the direction in which the traction roll (36) releases the reinforcing wire (55).

When the fixed gear part (52c) and the gear part (38a) are engaged, the gear wheel (38) can rotate in the opposite direction of the arrow k. The reinforcing wire (55) can be tensioned more strongly, but cannot be released.

The lever (52a) is a handle that is extended outward through a vertical hole (31c) while being fixed to the ratchet block (52). The user can hold the lever (52a) by hand and raise it upward. When the lever (52a) is raised upward, the engagement state of the ratchet block (52) with the gear wheel (38) is released. In this state, when the gear wheel (38) is rotated in the direction of arrow k, the reinforcing wire (55) can be concealed inside the lower beam (33) and the leg (31).

The spring (53) serves to elastically support the ratchet block (52) downward toward the gear wheel (38). The ratchet block (52) is always elastically supported toward the gear wheel (38) by the spring (53).

The operation of the structural reinforcement table (30) according to the second embodiment having the above configuration is as follows.

When using the table (30), if excessive load is applied to the table top or the angle between the legs relative to the table top changes for other reasons, the right angle sensor (45) detects that fact (the fact that the angle has changed) and transmits it to the controller (47).

The controller (47), which receives a signal from the right angle sensor (45), operates the motor (35) to wind the reinforcing wire (55). As the traction roll (36) winds the reinforcing wire (55), the reinforcing wire (55) hidden in the lower beam (33) and the leg (31) comes out to the top and finally becomes taut. It goes without saying that the gear wheel (38) also rotates while the traction roll (36) rotates. While the reinforcing wire (55) is tautly spread out, the recovery wire (57) is pulled out to the top of the lower beam (33), and at this time, the weight (65) rises.

Finally, when the gear wheel (38) stops, the ratchet block (52) descends and engages with the gear part (38a). Even if power is no longer supplied to the motor (35), the gear wheel (38) does not rotate in reverse and maintains the tension of the reinforcing wire (55).

When the above process is completed, as shown in Fig. 5, four reinforcing wires (55) are spread out in an X shape, taking the form of a bridge that reinforces the table (30).

The above process is carried out in the same manner even if the manual switch (43) is pressed. For example, a user using the table can press the manual switch (43) to set the table firmly in advance before placing a heavy object on the table (30).

When the function of the reinforcing wire (55) is no longer needed, the lever (52a in Fig. 9) is raised. When the lever (52a) is raised, the ratchet block (52) is separated from the gear wheel (38), and each reinforcing wire (55) is hidden inside the lower beam (33) and the leg (31) through its own open slit by the action of its own weight and weight (65).

Above, the present invention has been described in detail through specific examples, but the present invention is not limited to the above examples, and various modifications can be made by those skilled in the art within the scope of the technical idea of the present invention.

10: Table 11: Top 12: Top plate
12a: Insertion bend 13: Lower plate 13a: Insertion bend
15: Honeycomb panel 17: Frame 17a: Frame member
17b:Upper fixing slit 17c:Lower fixing slit 17d:Edge connector
17e: Joint space 19: Bridge connector 21: Bridge
30: Table 31: Leg 31a: Open slit
31c: vertical beam 33: lower beam 33a: open slit
35:Motor 36:Traction Roll 37:Power Shaft
38: Gear wheel 38a: Gear part 41: Display part
43: Manual switch 45: Right angle sensor 47: Controller
50: Tension retainer 51: Housing 52: Ratchet block
52a: lever 53: spring 55: reinforcing wire
55a: wire holder 55c: hook 57: recovery wire
61:Lower roll 63:Upper roll 65:Weight
67: Anchor pin

Claims (4)

delete A frame having a square shape and having an upper fixing slit formed on an upper surface and a lower fixing slit formed on a lower surface, an upper plate formed by folding a plate-like member having a predetermined thickness, covering an upper surface of the frame and having an insertion bend portion on an edge portion that fits into the upper fixing slit, a lower plate formed by folding a plate-like member having a predetermined thickness, covering a lower surface of the frame and having an insertion bend portion on an edge portion that fits into the lower fixing slit, an upper plate having a honeycomb panel built into the inside of the frame and in close contact with the upper plate and the lower plate;
A leg connector fixed to the bottom surface of the four corners of the top plate;
A vertical leg having an upper portion joined to a leg connector and extending downward, supporting the top plate and having a plurality of open slits;
A pair of lower beams connecting the lower parts of the legs and having a number of open slits opening upward;
A right angle sensor that detects changes in the angle between the top plate and the legs;
A controller connected to a right angle sensor and outputting a signal when detecting a change in the angle;
A traction roll built into the inner lower part of each leg;
A roll drive unit that is operated by a controller and rotates the traction roll;
An anchor pin built into the inner upper part of each leg to provide support;
A reinforcing wire, one end of which is fixed to an anchor pin inside one leg and the other end of which is wound around a towing roll inside the other leg, and is tensioned by being wound around the towing roll to reinforce the supporting force of the leg;
A display section for displaying the tensile state and tensile stress of each reinforcing wire;
A manual switch for manually operating the above roller drive unit;
Including a wire hiding means that operates when the reinforcing wire is not in operation and conceals the reinforcing wire within the leg and lower beam.
Structural reinforcement table. In the second paragraph,
The above wire concealing means;
Upper and lower rolls arranged up and down inside each leg,
A recovery wire that is connected to the reinforcing wire through a wire holder at one end and rises past the lower part of the lower roll and then hangs over the upper roll;
Equipped with a weight that is fixed to the other end of the recovery wire and sags downward due to its own weight and pulls the wire holder toward the lower roll side.
Structural reinforcement table. delete

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