JP3141129U - Height adjustable folding desk - Google Patents

Abstract

An object of the present invention is to provide a folding desk that can be folded in height and adjustable in height so that the length of the leg can be extended by a one-touch operation. And by raising the legs and detaching the curtain between the lower legs of the top panel, the curtains can be blindfolded between the legs, and the curtain is removed and the legs are folded for easy storage. The purpose is to provide a folding desk that can be used.
A folding desk in which four base legs are provided on the back side of the top plate so as to be folded or raised, respectively, and a lock pin is provided at each of the front ends of the four base legs. A height-adjustable folding desk, wherein extension legs are connected to the four base legs by pins.
[Selection] Figure 1

Description

The present invention relates to a folding desk capable of adjusting the height of a desk, and relates to a standing desk used at a counter in an office or a store, or a sitting desk used at a meeting. Specifically, the length of the legs can be expanded and contracted by one-touch operation, the height of the desk is adjusted in multiple steps according to the purpose of use, and when not in use, the legs are folded to reduce the bulk and make it compact and stored or The present invention relates to a folding desk that facilitates transportation.

Conventionally, an office desk, a table, a warp desk, and the like are usually provided with a fixed-length leg on the back side of the top board, and are dedicated as a standing desk or a sitting desk. However, a desk having such a fixed leg is stable when used, but requires a large storage space for the length of the leg when the desk is not used. In a housing complex or the like where a storage space cannot be secured, it is impossible to store other items to be stored because of the desk, or the living space is narrowed. Alternatively, when the desk transport passage is narrow, the desk legs may hit against a wall or the like to damage the legs or the wall because the desk is bulky.

As described above, the desk having the fixed legs is stable when in use, but takes a place when it is put away. Therefore, the leg is folded to be folded, or the leg is screwed to the top plate with a screw tightening structure, and the screw is loosened to remove the leg. By the way, in this folding structure, a hinge is provided between the base of the leg and the top plate, and the legs are folded inward so that the direction of folding the legs is directed to the opposing legs. In this case, if the top plate in the folding direction is sufficiently long, the folded legs will not overlap each other, but if the legs are long compared to the size of the top plate, the folded legs Since it overlaps with the opposing leg, it cannot be folded down. Also, in the case of a folding desk, the space between the four legs from the top is opened, so if it is necessary to blindfold with a piece of cloth, it looks bad.

By the way, the thing of many structures is proposed about a folding desk, and this applicant has also proposed the idea regarding the folding desk which fixed the height of the leg | foot (for example, refer patent document 1). The contents are shown below. On the back surface of the top plate, a pair of digits is fixed along the opposing long sides of the top plate, and legs with fixed heights are provided near both ends of these digits, and the legs are folded or It is a folding desk provided to be able to stand up, characterized in that a curtain plate is detachably provided between the legs.

Utility Model Registration No. 3130823

As described above, as represented by Patent Document 1, the conventional desk has the following problems when summarized.

That is, the first problem with conventional desks is that desks with fixed legs are stable when used, but require a large storage space when the desk is not used. For example, reception desks in offices and stores, or housing estates In such cases, it is difficult to secure a storage place for the desk because the storage space is small.

Secondly, since the length of the leg of the conventional folding desk is fixed, each use is limited as a standing desk or a sitting desk. Moreover, since the space between the four legs below the top plate is opened, the inside is not preferable when used on a counter or the like.

Therefore, the height-adjustable folding desk of the present invention was made to solve the conventional problems, and the legs can be folded and the length of the legs can be extended by one-touch operation. An object of the present invention is to provide a folding desk that can be adjusted in height. And by raising the legs and detaching the curtain between the lower legs of the top panel, the curtains can be blindfolded between the legs, and the curtain is removed and the legs are folded for easy storage. The purpose is to provide a folding desk that can be used.

Therefore, the present inventor conceived that an extension leg was added to the base leg via a lock pin, and a prototype was obtained based on the idea that the operability by one touch was excellent. The inventor's height-adjustable folding desk is embodied on the basis of such knowledge, and the device of claim 1 is provided with four base legs on the back side of the top plate so that they can be folded or raised, respectively. The folding desk is characterized in that a lock pin is provided at each of substantially four ends of the four base legs, and an extension leg is connected to each of the four base legs by these lock pins. . Further, the invention of claim 2 has the above features of the invention of claim 1 in addition to inserting the extension legs into the inner periphery of the four base legs, respectively, and the abbreviation of the four base legs. The lock pins are screwed to the tip portions, and knock pins are built in the lock pins through springs, and holes are formed in the four base legs and the extension legs, respectively. A folding desk characterized in that the knock bar penetrates through these holes. The invention of claim 3 is a folding desk characterized in that, in addition to the above feature of the invention of claim 2, a plurality of holes are perforated in the longitudinal direction of the extension legs. The invention of claim 4 is a folding desk characterized in that, in addition to the above feature of the invention of claim 1, hard chrome plating is applied to the surface of the extension leg.

The height-adjustable folding desk of the present invention has a one-touch lock pin on the base leg, so that the length of the leg can be expanded and contracted by one person alone. Can be extended and fixed in stages. And when not in use, the legs are folded down to reduce the bulkiness and fold compactly, and facilitate storage or transportation. Further, when the folding desk is used in a standing position, the space between the legs under the top plate can be hidden by the curtain, so that the appearance is good and preferable when used as a counter in an office or a store. In addition, when not in use, when storing, the curtain can be removed and the legs can be folded, making it easy to secure a storage location. Specifically, the curtain is removed from the desk and the legs are folded to reduce the bulk, and these can be stored compactly or easily carried. On the other hand, depending on the government office such as the National Tax Agency, there is a high demand for borrowing a desk with a lease in accordance with the frequency of use of the counter desk or the cost saving of the counter desk after the final filing date. In such a case, a storage space for the desk when not in use is not required, and an effect of cost reduction can be expected.

Embodiments of the present invention will be specifically described below based on examples of the present invention shown in the accompanying drawings.

First, an embodiment of the height-adjustable folding desk according to the present invention will be described with reference to FIGS. FIG. 1 is an overall perspective view of a folding desk with adjustable height according to the present invention. FIG. 2 is a side view of the above. FIG. 3 is a partial cross-sectional view as seen from the top side of the top plate. FIG. 4 is a partial perspective view showing a state before the extension leg is added to the base leg. FIG. 5 is a partial perspective view showing the state after the extension leg is connected to the base leg. FIG. 6 is a component diagram showing details of the lock pin. FIG. 7 is an explanatory view showing the operation of the lock pin. FIG. 8 is an overall perspective view of the folding desk capable of height adjustment showing a state in which the curtain is mounted on the leg portion.

The height-adjustable folding desk top plate of the present invention has a relatively small width compared to the height of the legs, and the top plate has a standard size of 1800 mm in length and 450 mm or 600 mm in width. As shown in FIG. 1, the folding desk D has a top board 1 made of a rectangular wooden decorative board, and can be folded up to the back side of the top board 1 and can be raised up. An iron base 5 made of iron is provided. Hereinafter, in the folding desk D, the long side of the top board 1 is referred to as the left-right direction, and the short side is referred to as the front-rear direction. On the back surface of the top plate 1, rod-like iron digits 2, 2 are integrally fixed to the top plate 1 in the front-rear direction along the opposing long sides. U-shaped parts 51, 51 are provided in the vicinity of both ends of these digits 2 in the left-right direction. A rivet 52 is provided at the lower end of the U-shaped part 51 so that the base leg 5 can be bent inward. A stay 3 for connecting the digit 2 and the base leg 5 is provided, and a rivet 53 is provided on the base leg 5 side, a rivet 21 is provided on the digit 2 side, and a rivet 31 is provided therebetween. That is, the stay 3 is configured as a link mechanism by the rivets 31, 21, and 53 so as to rotate with these rivets as fulcrums. Further, a shelf 4 is provided on the back side of the top plate 1 along the long side, and is connected to the rivets 31 and 31 of the stays 3 and 3 on both sides. When the folding desk is used as a standing desk, the stay 3 stretches straightly and acts to hold the digit 2 and the base leg 5 at a right angle. On the other hand, when folding the folding desk, the stay 3 bends in a dogleg shape with the rivet 31 in the middle, and at the same time the base leg 5 bends toward the digit 2 with the rivet 52 as a fulcrum. In the present invention, the extension legs 9 are connected to the lower sides of the four base legs 5, respectively. As can be seen from FIG. 2 as seen from the side, each extension leg 9 is connected to the tip of each base leg 5 via a lock pin 6. The length of the leg portion is expanded and contracted by these extension legs 9, and the height of the folding desk D of the present invention is adjusted in three stages of 950 mm, 900 mm and 700 mm.

When folding and stacking the folding desk D, a buffer packing 54 is provided at a position near the base of the base leg 5 so as not to damage the lower top plate 1. In addition, leg connecting members 56 and 56 are provided in two upper and lower stages so as to reinforce between the base legs 5 and 5 in the short side direction of the top plate 1. Further, horizontal adjustment bolts 97 for fine adjustment are respectively provided at the lower ends of the extension legs 9.

The feature of the present invention is that the height of the desk is made variable by adding an extension leg so that the length of the leg can be adjusted. In this case, a main lock pin is used to fix the extension leg. The configuration will be described with reference to FIG. 6 (a) in the center shows a state in which the lock pin 6 is extended against a spring, which will be described later, and the left base 61 and the right fixing portion 62 face each other with the dividing plane P as a boundary. A thick knock bar 63a penetrates through these from the right to the knock bar base 63b which is one step thinner on the left. The thin knock bar base 63b is fixed to the base 61 inward by a set screw 66 at the left end. On the other hand, a screw 64 is engraved at the tip of the right fixing portion 62 in order to fix the lock pin 6 to the base leg 5. A wrench hook 67 is shown on the surface of the adhering portion 62 near the dividing surface P, and a spring is provided in an inwardly extendable manner. A BB arrow in the dividing plane P is shown on the left as FIG. 7 (b), and a CC arrow is shown on the right in FIG. 7 (c). In the left figure (b), the notch groove 68 recessed in the left-right direction is provided in the center of the base 61, and the knock bar base 63b penetrating therethrough is shown. In FIG. 6C on the right, a spanner hook 67 is provided in the center of the fixing portion 62 in a direction perpendicular to the notch groove 68, and a knock bar base portion 63b penetrating in the center is shown.

In addition to the above, the height-adjustable folding desk of the present invention is devised. That is, in order to cover the lower leg portion of the top plate 1 of the folding desk D, a front curtain and a side curtain on the left and right are provided. FIG. 8 shows a front curtain board 7 on the front, which is a thin wooden decorative board having a substantially rectangular shape. The long side of the front curtain plate 7 is substantially the same length as the long side of the top plate 1, and the short side dimension is determined by the space covering the lower side of the top plate 1. As shown in the figure, the front curtain plate 7 is placed on an L-shaped metal fitting 55 provided at the lower ends of the left and right base legs 5 and 5. On the other hand, side curtain plates 8 and 8 are shown on the left and right sides, which are also thin wooden decorative boards having a substantially rectangular shape. The short side of the side curtain plate 8 has substantially the same length as the short side of the top plate 1, and the long side is determined by the height space that covers the bottom of the top plate 1. These side curtain plates 8 and 8 are also placed on a metal fitting not shown in the same manner as the front curtain plate 7.

Next, the assembly and storage procedures of the folding desk configured as described above and adjustable in height according to the present embodiment will be described.

First, means for adding and extending the legs will be described with reference to FIGS. FIG. 4 shows the base leg side upward and the extension leg side downward, and FIG. 5 shows a state where the top and bottom are connected. The upper iron base 5 is provided so that it can be folded and raised on the top board 1. The base leg 5 is a cavity having a square section, and an extension leg 9 having a square section that is slightly smaller from below is inserted into the inner periphery of the cavity. A slit 94 is provided in the front end of the extension leg 9 in the front-rear direction of the desk so as to pass through a portion of a rivet 52 provided on the U-shaped part 51 on the back side of the top plate 1. Holes 91, 92, and 93 are perforated from above below the slit 94, and are positioned so that the desk heights are 950 mm, 900 mm, and 700 mm, respectively. As shown in FIG. 5, after inserting the lower extension leg into the inner periphery of the upper base leg, a lock pin 6 is provided to fix the extension leg to the base leg. As a guide for adjusting the height of the desk, as shown in FIG. 1, three arrows 95 are engraved near the bottom of the hole, respectively, inside the base 5 in the horizontal direction of the desk.

Next, the action of the lock pin for fixing the extension leg when connecting and connecting will be described. As shown in FIG. 7, the extension leg 9 is inserted into the inner periphery of the outer base leg 5, the state before the height positioning is shown in FIG. 7 (a), and the state after the positioning is shown in FIG. 7 (b). Show. In FIG. 7 (a), the left side is a longitudinal sectional view of the lock pin 6, and the right side is a cross section in the height direction of the leg portion of the cavity. As shown in the drawing, a nut 69 is welded and fixed to the surface of the outer base leg 5, and the lock pin 6 is attached to the base leg 5 by tightening a screw 64 at the tip of the lock pin 6 from the left side to the nut 69. It is fixed. At this time, since the spanner is fitted into the spanner hook 67 (shown in FIG. 6) of the lock pin 6 and tightened to the nut 69, the lock pin 6 is screwed to the base leg 5 without loosening. The lock pin 6 is in an extended state against a spring described later. That is, the tip of the knock bar 63a looks into the hole 57 of the outer base leg 5, and the left base 61 and the right fixing part 62 are not bound to the hole of the extension leg 9 and the boundary surface P is the boundary. It is in a state of butt contact. Specifically, the tip end surface of the left base portion 61 shown in FIG. 6B and the tip end surface of the right spanner hook 67 shown in FIG. From this state, the left base 61 is rotated 90 degrees so that the concave notch groove 68 engages with the convex wrench hook 67 on the right. From this state, as shown in FIG. 7B, when the inner extension leg 9 is raised in the direction of arrow H, the knock bar 63a protrudes to the right by the urging force of the spring 65 at the position of the hole 91 and penetrates the hole 91. To do. Thus, the position of the extension leg 9 is determined, and when the knock bar 63a passes through the hole 91, the height of the top plate is fixed at 950 mm. When changing the height, the left base 61 is returned to the extended state against the spring 65 until the state shown in FIG. The knock bar 63a penetrates to the right at the position, and the height of the top plate is positioned at 900 mm and 700 mm, respectively. Thus, when the extension leg 9 is raised in the direction of the arrow H and the holes 91, 92, 93 are aligned with the position of the knock bar 63a, the knock bar 63a penetrates into each hole by the biased spring 65 and the length of the leg is increased. Is decided. In actual work, the length of the leg can be adjusted by one person by inserting the extension leg 9 from above into the cavity of the cross-sectional angle of the base leg 5 with the base leg side of the top plate down. it can. Since the knock bar penetrates the hole of the extension leg by the biasing force of the spring, the height of the desk can be adjusted by one-touch operation of the lock pin.

With such height adjustment, the desk height can be adjusted in three stages. Therefore, the use as a standing desk or a sitting desk can be expanded. When the height is 950 mm or 900 mm, it can be used as a standing desk at a tax office counter or the like, and when the height is 700 mm, it can be used as a normal sitting table. In the present embodiment, the three-stage height adjustment has been described, but it is also possible to adjust the length of the legs in more stages by increasing the length of the extension legs and increasing the number of holes.

The outer peripheral surface of the iron extension leg 9 is hard chrome plated. When mounted on the inner periphery of the hard chrome plated base leg 5, both iron legs are rubbed against each other, or are prevented from being damaged by the tip of the knock bar 63a.

In addition, when assembling the folding desk, it is placed with the top 5 of the desk shown in FIG. First, the four base legs 5 folded over the digits 2 are turned upright with the rivet 52 as a fulcrum. At the same time, when the stay 3 bent in a square shape is linearly extended from the portion of the rivet 31, the stay 3 is stretched and held at a right angle between the base leg 5 and the digit 2. Next, it is visually confirmed by the straightness of the stay 3 that the space between the base leg 5 and the digit 2 is locked, and then the base leg 5 is made to face down with the top plate 1 facing up. Next, the front curtain plate 7 is straddled between the base legs 5 and 5 along the long side of the top plate 1. The lower long side of the front curtain plate 7 is placed on L-shaped base brackets 55 and 55 provided on the base legs 5 and 5. Attach the front curtain to the iron base with a magnet (not shown). The side curtain 8 is also fitted with a front curtain on the base if necessary. Thus, the assembly of the folding desk D is completed and is shown in FIG.

On the other hand, when disassembling and storing the folding desk, the procedure may be basically reversed. First, the side curtain plates 8 and 8 of the folding desk D are removed from the base leg 5, and similarly, the front curtain board 7 is also removed from the base leg 5. In this way, the front curtain 7 and the left and right side curtains 8 and 8 are separated as separate bodies, and the four base legs 5 of the folding table D are folded inward, and the legs are mutually connected. Since there is no overlapping, the bulkiness of the folding desk D can be reduced. If necessary, the extension leg 9 can be detached from the base leg 5 and disassembled so as to be compacted, so that the folding desk D can be stored in a narrow space. Or when a user borrows temporarily with a lease, transportation by a car etc. is easy and it is convenient.

Note that the height-adjustable folding desk of the present invention can be used in sitting positions such as sitting desks used at meetings, counters at desks, desks, warp desks, ironing boards and chabu-dais. Applications can be expanded as a desk to be used.

It is the whole perspective view of the folding desk which can adjust height in the present invention. It is a side view same as the above. It is a partial cross section seen from the top board same as the above. It is a partial perspective view which shows the state before adding an extension leg to a base leg same as the above. It is a partial perspective view which shows a state after connecting an extension leg to a base leg same as the above. It is a component drawing which shows the detail of a lock pin same as the above. It is explanatory drawing which shows the effect | action of a lock pin same as the above. It is the whole perspective view of the folding desk which can adjust height which shows the state which attached the curtain to the leg part same as the above.

Explanation of symbols

D Folding table P Dividing surface 1 Top plate 11 Back surface 12 Recess 13 Long recess 2 Digit 21 Rivet 3 Stay 31 Rivet 4 Shelf 41 Side bar 5 Base 51 U-shaped parts 52, 53 Rivet 54 Buffer packing 55 L-shaped metal fitting 56 Leg Connecting material 57 Hole 6 Lock pin 61 Base 62 Adhering part 63a Knock bar 63b Knock bar base 64 Screw 65 Spring 66 Set screw 67 Spanner hook 68 Notch groove 69 Nut 7 Front curtain plate 8 Side curtain plate 9 Extension legs 91, 92, 93 Hole 94 Slit 95 Arrow mark 96 Leg connecting material 97 Adjust bolt

Claims (4)

A folding desk provided with four base legs on the back side of the top plate so that it can be folded or raised, respectively.
Each of the four base legs is provided with a lock pin at substantially the tip,
A folding desk characterized in that extension legs are connected to the four base legs by these lock pins, respectively. Insert the extension legs into the inner circumference of the four base legs,
And while screwing the lock pins respectively to the substantially distal ends of the four base legs,
These lock pins have a built-in knock bar that can be moved forward via a spring.
And drilling holes in the four base legs and the extension legs,
2. The folding desk according to claim 1, wherein the knock bar is passed through these holes. The folding desk according to claim 2, wherein a plurality of holes are drilled in the longitudinal direction of each of the extension legs. 2. The folding desk according to claim 1, wherein hard chrome plating is applied to the surface of each extension leg.

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