Top extendable apparatus for tables

Abstract

By configuring the adjustment frame, equipped with an auxiliary top plate and connected to a slider guided by a guide via a four-bar linkage, to be supported by springs and dampers, the auxiliary top plate can be stored under the top plate when not in use, allowing for convenient table use as well as improved design and interior aesthetics. In particular, by extending the guide to the length of the top plate while configuring the two auxiliary top plates to be height-adjustable, the top surface area of ​​a rectangular table can be expanded only on both sides, or an expansion effect can be achieved at each edge through the auxiliary top plates. Additionally, by manufacturing the slider to be half the length of the top plate and the adjustment frame to be half the length of the slider, an expansion effect of one-quarter of the top surface area can be achieved.

Description

Technology Field

[0001] The present invention relates to a tabletop extension device, and more specifically, by configuring an adjustment frame installed in the form of a four-bar link on a slider that moves along a guide installed under the tabletop and protrudes outward from under the tabletop, so that the height is adjusted parallel to the tabletop to form a single flat shape, the tabletop area can be selectively expanded and used when needed by using an auxiliary tabletop mounted on the adjustment frame, and the tabletop can be stored away when not in use so as not to inconvenience the user, thereby improving the aesthetics and sense of beauty. Background Technology

[0002] Generally, tables have a fixed tabletop width, but there are also extendable tables that allow the surface area to be varied as needed. These extendable tables can be installed in narrow spaces to save space, and then the tabletop can be expanded when necessary to be used for various purposes.

[0004] The following (Patent Documents 1) to (Patent Documents 3) disclose technology regarding an expandable table capable of changing the surface area of ​​the tabletop in this way.

[0005] (Patent Document 1) Korean Registered Patent No. 10-2235694

[0006] The present invention relates to a system table, and the technical problem to be solved is to provide a system table that allows anyone to conveniently expand the table top to approximately two to four times its size while seated. The configuration for this purpose comprises: a table support plate including first and second support plates erected vertically facing each other, and third and fourth support plates erected vertically opposite each other between the first and second support plates; and a table top plate including a first top plate slidably coupled to the first and second support plates of the table support plate in a first horizontal outward direction, a first extension top plate coupled to the first top plate by a first hinge, a second top plate slidably coupled to the first and second support plates of the table support plate in a second horizontal outward direction opposite to the first horizontal outward direction, and a second extension top plate coupled to the second top plate by a second hinge. A system table is disclosed comprising a first side top plate coupled to a first support plate among the table support plates by a third hinge, and a second side top plate coupled to a second support plate among the table support plates by a fourth hinge.

[0008] (Patent Document 2) Korean Registered Patent No. 10-2216786

[0009] The invention relates to an extendable table, wherein the unfolding tables located on both sides can be unfolded or returned to their original positions through the rotational drive of a drive table located in the center, allowing a small or large number of people to use it selectively, and can uniformly supply cold or warm air to multiple people according to the temperature outdoors, and can improve convenience of use by freely adjusting the direction and height of discharge of cold or warm air, and can provide a table for infants that can also be used, can safely protect infants located on the table, and can stably rock infants located on the table to stimulate interest and induce sleep.

[0011] (Patent Document 3) Korea Open Utility No. 20-2022-0002489

[0012] The invention relates to a table with an expandable structure, and more specifically, to a table with an expandable structure that has a simple structure, can reduce manufacturing costs, and can easily expand and contract the table. The table with such an expandable structure is characterized by comprising: a main tabletop; a guide plate coupled to the front and rear ends of the bottom surface of the main tabletop, respectively; an expansion tabletop positioned on at least one side of the main tabletop; a rotatable support plate coupled to the front and rear ends of the bottom surface of the expansion tabletop, respectively; and a hinge shaft installed through the area where the guide plate and the rotatable support plate overlap, thereby allowing the rotatable support plate to rotate. Prior art literature

[0013] Korean Registered Patent No. 10-2235694 (Registration Date: 2021.03.29) Korean Registered Patent No. 10-2216786 (Registration Date: 2021.02.09) Korean Published Utility Model No. 20-2022-0002489 (Publication Date: 2022.10.18) The problem to be solved

[0014] However, these existing extension tables have the following problems.

[0015] (1) Existing extension tables are designed so that an auxiliary table can be rotated on the edge, and when needed, the auxiliary table is positioned horizontally with the table and then fixed or supported, which makes it inconvenient to use.

[0016] (2) That is, there is no significant inconvenience when using the extended table with the auxiliary tabletop extended, but when using the extended table without the auxiliary tabletop extended, a situation occurs where the user of the extended table with the auxiliary tabletop cannot sit with their feet or a chair under the extended table.

[0017] (3) This is because some people sit deeply with their chair or leg parts pushed into the extension table, and for such people, the auxiliary tabletop gets in the way, making it difficult to sit in a comfortable position, which can cause an uncomfortable situation.

[0018] (4) In addition, such a folded auxiliary tabletop not only spoils the overall aesthetic of the extension table but also has disadvantages in terms of design and interior.

[0020] The present invention takes these points into consideration and aims to provide a table top extension device that allows the table to be used conveniently and also improves the design and interior by configuring an adjustment frame, in which an auxiliary top plate is mounted in the form of a four-bar linkage on a slider guided by a guide under the top plate, to be supported by a spring and a damper, so that when not in use, the auxiliary top plate is stored under the top plate.

[0021] In particular, the present invention has another objective of providing a table top plate extension device that extends the guide by the length of the top plate and configures two auxiliary top plates to be height-adjustable, thereby allowing the top plate area to be expanded only on both sides for a single rectangular table, or enabling an area expansion effect to be obtained for each edge through the auxiliary top plates.

[0022] In addition, the present invention has another objective of providing a table top extension device that can achieve an expansion effect of about one-quarter of the top surface area by manufacturing the slider to be half the length of the top surface and manufacturing the adjustment frame to be about half the length of the slider. means of solving the problem

[0023] A table top plate extension device according to the present invention for achieving the above purpose comprises: a table top plate extension device that extends the top plate (T) of a table as needed; a pair of guides (100) installed facing each other on the underside of the top plate (T) so as to be positioned parallel to the top plate (T); a grid-shaped slider (200) installed so as to move along its length direction through a roller (210) guided by the guide (100) and with a portion protruding out of the top plate (T); and an adjustment frame (300) having an auxiliary top plate (310) mounted on its upper side, and connected to the slider (200) by two pairs of links (320) so as to be caught on a jaw (321) which is rotated in the opposite direction to the direction in which the slider (200) moves to protrude, thereby adjusting the height so as to be positioned parallel to the slider (200) and causing the edge of the auxiliary top plate (310) to come into contact with the edge of the top plate (T). It is characterized by including at least one spring (400') and damper (400"), each having one end fixed to the slider (200) and the other end mounted to the adjustment frame (300), so that the auxiliary top plate (310) can be maintained at the height of the top plate (T) by rotating the adjustment frame (300) in the opposite direction to the withdrawal direction.

[0024] In particular, the guide (100) is formed over the entire length of the top plate (T), and the guide (100) is equipped with the slider (200), the adjustment frame (300), the spring (400'), and the damper (400) on each side to expand the width of the top plate (T) on both sides.

[0025] At this time, the slider (200) is manufactured to be half the length of the guide (100), and the adjustment frame (300) is manufactured to be half the length of the slider (200), so that the auxiliary top plate (310) is formed to be 1 / 4 the length of the top plate (T). Effects of the invention

[0026] The table top extension device according to the present invention has the following effects.

[0027] (1) By sliding the auxiliary top plate out from under the top plate and then configuring the height so that the auxiliary top plate forms a plane with the top plate through a 4-bar linkage structure, the top plate extension device does not cause inconvenience to the user of the table, allowing the table to be conveniently extended and used.

[0028] (2) In addition, when the auxiliary tabletop is not in use, the auxiliary tabletop is positioned so that it is placed next to the tabletop, thereby preventing the unused auxiliary tabletop from being visible from the outside, which can improve the aesthetics and aesthetic appeal of the table.

[0029] (3) Meanwhile, the table extension device according to the present invention is configured such that auxiliary top plates can be extended on both sides of a pair of guides formed by the length of the top plate, so that it is convenient to select and adjust to the desired size.

[0030] (4) In addition, the 4-bar link structure can be configured so that the auxiliary tabletop can be extended to each corner of the rectangular table by installing the guides in an alternating vertical and horizontal direction or in a "+" shape, as the height adjustment is different depending on the link length. Brief explanation of the drawing

[0031] [Fig. 1] is a plan view showing a table equipped with a tabletop extension device according to the present invention. [Fig. 2] is a side view showing a part of a table equipped with a tabletop extension device according to the present invention. [Fig. 3] is a side view of a part of a table showing the state in which a slider is pulled outward from the bottom of the top plate to extend the auxiliary top plate in [Fig. 2]. [Fig. 4] is a side view of a part of a table showing the state in which the height is adjusted by rotating an adjustment frame that rotates in the form of a four-bar linkage, and an auxiliary top plate is provided in the slider drawn from [Fig. 3]. [Fig. 5] is a side view of a part of a table that is unfolded into a single flat plane with the tabletop by adjusting the height of the auxiliary tabletop in [Fig. 4]. [Fig. 6] is a plan view showing an example in which auxiliary top plates are pulled out and extended to both sides of a table in a table top plate extension device according to the present invention. Specific details for implementing the invention

[0032] Hereinafter, preferred embodiments of the present invention will be described in more detail with reference to the attached drawings. Prior to this, terms and words used in this specification and claims should not be interpreted as being limited to their ordinary or dictionary meanings, and should be interpreted in a meaning and concept consistent with the technical spirit of the present invention in accordance with the principle that the inventor can appropriately define the concept of the terms to best describe his invention.

[0033] Therefore, the embodiments described in this specification and the configurations illustrated in the drawings are merely the most preferred embodiments of the present invention and do not represent all of the technical ideas of the present invention; thus, it should be understood that various equivalents and modifications that can replace them may exist at the time of filing this application.

[0035] [Configuration of Table Top Extension Device]

[0036] The table top extension device according to the present invention includes, as shown in FIGS. 1 to 6, a pair of guides (100), a grid-shaped slider (200), an adjustment frame (300), and a spring (400') and a damper (400).

[0037] In particular, the slider (200) is guided by the guide (100) so that a portion of it protrudes out of the top plate (T), and the adjustment frame (300) mounted on the slider (200) is height-adjusted by a link (320) connected in a four-bar link form, thereby allowing the auxiliary top plate (310) mounted on the adjustment frame (300) to be height-adjusted to the height of the top plate (T). At this time, the spring (400') and the damper (400") are designed to stably support and fix the rotational state so that the adjustment frame (300) cannot rotate further while in a rotated state.

[0038] In addition, the guide (100) is formed long along the entire length of the top plate (T), and by configuring the slider (200), adjustment frame (300), spring (400'), and damper (400) on each side thereof, the auxiliary top plate (310) can be selectively extended and used on both sides relative to the top plate (T).

[0039] At this time, the slider (200) is manufactured to be half the length of the guide (100), and the adjustment frame (300) is manufactured to be half the length of the slider (200), thereby allowing the auxiliary top plate (310) mounted on the adjustment frame (300) to be expanded to about 1 / 4 the width of the top plate (T).

[0041] Hereinafter, the configuration will be described in more detail with reference to the attached drawings. Here, the drawing symbol "T" indicates a tabletop on which the tabletop extension device according to the present invention is mounted, and the table may be any type equipped with a tabletop, such as a desk, an office table, or a dining table.

[0042] A. Guide

[0043] A pair of guides (100) are mounted on the top plate (T) facing each other, as shown in FIGS. 1 to 4. At this time, the guides (100) are mounted side by side on the underside of the top plate (T) to guide the rolling of the slider (200) to be described later.

[0045] In a preferred embodiment of the present invention, the guide (100) is preferably configured to be long enough to be the length of the top plate (T) as shown in FIG. 1 and FIG. 6, and mounted on the top plate (T) so that two of the other components described later are mounted on each side of the top plate (T), thereby expanding the width of the top plate (T) at both edges of the top plate (T). Of course, it is also possible to configure the guide (100) to expand the width only through one edge of the top plate (T).

[0047] B. Slider

[0048] A slider (200) is mounted between the aforementioned pair of guides (100), as shown in FIGS. 1 to 4. At this time, rollers (210) are mounted on each side of the slider (200) so that the slider (200) can move along the longitudinal direction of the guide (100) by receiving sliding guidance. In the drawings, the rollers (210) are shown as an example in which two are mounted on each side edge of the slider (200).

[0050] Meanwhile, the slider (200) is configured such that, as shown in FIGS. 2 to 4, when sliding under the guidance of the guide (100), a portion thereof may protrude outside the guide (100). Of course, it is preferable that the slider (200) protruding outside the guide (100) in this manner be configured to protrude only by a predetermined length through a stopper not shown.

[0052] Here, in a preferred embodiment of the present invention, the length of the slider (200) is preferably half the length of the guide (100) when the auxiliary plate (310) is configured to extend to both sides of the top plate (T), as shown in FIG. 1 and FIG. 6. Of course, when the slider (200) is configured with only one auxiliary plate (310) for the top plate (T), it may be manufactured and used with the same length as the guide (100).

[0054] This is intended to allow the slider (200) portion protruding out of the top plate (T) as shown in FIG. 3 to FIG. 5 to provide stable sliding guidance, and to allow the adjustment frame (300), which will be described later, to be rotatably mounted on the slider (200) portion through a four-bar linkage structure so that the auxiliary top plate (310) installed on the adjustment frame (300) can be height-adjusted to the height of the top plate (T).

[0056] The slider (200) formed in this manner is preferably formed with a central part empty in a grid shape, as shown in [Fig. 1]. This is so that the adjustment frame (300), which will be described later, is stored in an overlapping manner inside the empty space, and then, as shown in [Fig. 3] and [Fig. 4], when the adjustment frame (300) protrudes out of the top plate (T), the stored adjustment frame (300) is rotated to move upward from the slider (200), thereby allowing the auxiliary top plate (310) to be height-adjusted to the height of the top plate (T).

[0058] C. Adjustment Frame

[0059] The adjustment frame (300) is mounted on the slider (200) described above, as shown in FIGS. 1 to 5. At this time, the adjustment frame (300) is mounted with two pairs of links (320) such that one side of each link (320) is mounted to rotate in place on the slider (200), and the other side of each link (320) is mounted to rotate in place. As a result, the adjustment frame (300) and the top plate (T) are connected in a four-bar link form through these links (320) relative to the slider (200), so that the height adjustment is performed with the adjustment frame (300) aligned with the slider (200). To achieve this, it is preferable to use links (320) of the same length.

[0061] Here, as shown in FIGS. 1 to FIGS. 5, an auxiliary plate (310) is mounted on the upper surface of the adjustment frame (300). When height adjustment is performed through the aforementioned link (320), it is desirable to prevent the link (320) from rotating further when the height of the auxiliary plate (310) is adjusted to the same height as the plate (T), thereby keeping the plate (T) and the auxiliary plate (310) in a single flat state.

[0063] Additionally, as shown in FIG. 3 to FIG. 5, it is preferable that the above link (320) be configured to rotate the adjustment frame (300) so that when the adjustment frame (300) is rotated on the slider (200), the adjustment frame (300) rotates toward the top plate (T), and the adjustment frame (300) can be rotated until the edge of the auxiliary top plate (310) mounted on the adjustment frame (300) touches the edge of the top plate (T). This is to ensure stable use while preventing the auxiliary top plate (310) from rotating in the opposite direction, while allowing the top plate (T) and the auxiliary top plate (310) to form a single plane.

[0065] In a preferred embodiment of the present invention, the link (320) is preferably configured to be caught or hooked on a jaw (321) so that it can no longer rotate at the moment when the auxiliary plate (310) rotates and forms a plane with the plate (T), as shown in FIG. 4 and FIG. 5. At this time, the jaw (321) may use an adjustment bolt that is mounted on the adjustment frame (300) and allows for height adjustment. By configuring the adjustment bolt to be fastened to the inside of the adjustment frame (300) so that height adjustment is achieved, the link (320) cannot rotate further at the moment it catches on the jaw (321) while rotating, and the auxiliary plate (310) forms a plane with the plate (T). At this time, if the jaw (321) is relaxed and its length increases, the rotation limiting angle of the link (320) decreases, and conversely, if its length decreases downward, the rotation limiting angle of the link (320) increases.

[0067] D. Spring and Damper

[0068] As shown in FIGS. 1 to 5, one end of each spring (400') and damper (400) is mounted on the slider (200) and the other end is mounted on the adjustment frame (300) described above.

[0070] The spring (400') and damper (400) installed in this manner maintain the rotated state when the link (320), which is in a horizontal state as shown in FIGS. 3 to 5, rotates beyond a right angle so that the auxiliary top plate (310) comes into contact with the top plate (T). This maintained state is released when the user holds the adjustment frame (300) and rotates the link (320) in the opposite direction to the height adjustment direction.

[0072] As described above, the present invention is configured such that an adjustment frame is mounted below the top plate so as to protrude outward from the top plate in a sliding manner, and an adjustment frame equipped with an auxiliary top plate rotates in a four-bar linkage form on the protruding slider, thereby allowing the height adjustment of the top plate and the auxiliary top plate to be easily and conveniently adjusted, and furthermore, when the auxiliary top plate is not in use, it is not exposed to the outside, thereby improving aesthetics and appearance. Explanation of the symbols

[0073] 100: Guide 200: Slider 210: Roller 300: Adjustment Frame 310: Auxiliary top plate 320: Link spring 400': Spring 400": Damper

Claims

Claim 1 A table top plate extension device for extending the top plate (T) of a table as needed, comprising: a pair of guides (100) installed facing each other on the underside of the top plate (T) so as to be positioned parallel to the top plate (T); a grid-shaped slider (200) installed so as to protrude a portion of it from the top plate (T) while moving in the longitudinal direction through a roller (210) guided by the guide (100); and an adjustment frame (300) having an auxiliary top plate (310) mounted on its upper side, and connected to the slider (200) by two pairs of links (320) so as to be caught on a jaw (321) which is rotated in the opposite direction to the direction in which the slider (200) moves to protrude, thereby adjusting the height so as to be positioned parallel to the slider (200) and causing the edge of the auxiliary top plate (310) to come into contact with the edge of the top plate (T). A table top plate extension device characterized by including at least one spring (400') and a damper (400"), each having one end fixed to the slider (200) and the other end mounted to the adjustment frame (300), so that the auxiliary top plate (310) can be maintained at the height of the top plate (T) by rotating the adjustment frame (300) in the opposite direction to the withdrawal direction. Claim 2 A table top plate extension device according to claim 1, wherein the guide (100) is formed over the entire length of the top plate (T), and the guide (100) is equipped with the slider (200), the adjustment frame (300), the spring (400'), and the damper (400) on each side to expand the width of the top plate (T) on both sides. Claim 3 A table top plate extension device according to claim 2, characterized in that the slider (200) is manufactured to be half the length of the guide (100), and the adjustment frame (300) is manufactured to be half the length of the slider (200), so that the auxiliary top plate (310) is formed to be 1 / 4 the length of the top plate (T).

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