JP2010240208A - Desk - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a desk by which a plurality of desks can be stably stacked without keeping the size of a top board limited or attaching/detaching the top boards to/from leg bodies. <P>SOLUTION: The lower face in the front end part of the top board 12 is pivotably attached to a front part lateral rod 4a turnably in a vertical direction from a using position where the top board is arranged substantially horizontal to an unused position where the top board is directed in a vertical direction by using a pivot supporter 13 by making the front part lateral rod 4a in a front upper part of the leg body 2 which can be stacked and whose lower side is opened as a pivot facing right and left direction. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to stackable desks (including tables) used in schools, lecture halls, conference rooms, and the like.

  Examples of stackable desks used in schools, lecture halls, conference rooms, and the like are described in Patent Documents 1 to 3, for example.

Japanese Utility Model Publication No. 49-101905 Japanese Utility Model Publication No. 55-30065 JP 2004-321658 A

  In order to be able to stack a plurality of desks when not in use, like the desks described in Patent Documents 1 and 2, the leg rods opposed to the front and rear or the left and right are positioned more than the peripheral edge of the top plate. It is necessary to make the size of the top plate smaller than the outside, that is, the leg. However, if this is done, the work space on the top plate surface will be reduced and the usability will be reduced, and in a school or the like, a plurality of desks will be arranged side by side with the legs abutting or close to each other. When doing so, there is a problem that a gap is formed between the top plates of the desks adjacent to each other, and the stationery or the like falls from this gap.

  Moreover, since the top plate is also stacked, when a plurality of desks are stacked, the stack height is increased by the thickness of the top plate, and the stability is deteriorated.

  In the desk described in Patent Document 3, since the left and right dimensions of the leg and the top plate are almost equal, the work space on the top board surface is not so small, and a plurality of desks are brought into contact with each other. Or, when placed close to each other in the left-right direction, there is little risk of a problem that a gap is formed between the top plates of adjacent desks. However, since the top plate is removed and only the legs are stacked, it is troublesome to detach the top plate from the legs.

  The present invention has been made paying attention to such problems, and can stably stack a plurality of desks without limiting the size of the top board or attaching or detaching the top board from the legs. The purpose is to provide a desk that can be used.

In order to solve the above problems, the desk according to the present invention includes:
A pivot that points in the left-right direction is provided at either the front or rear end of the upper leg that has been released from the lower side of the stack, and either one of the front or rear end of the top plate is placed on this pivot. From the position to the non-use position which faces the up-down direction, it is pivotally attached so that it can rotate in the up-down direction.
According to this feature, a plurality of desks can be stacked without interfering with the top board of the lower desk by rotating the top board to a non-use position facing in the vertical direction. Therefore, the front / rear / left / right dimensions of the top plate are not limited by the legs, and can be made larger than the planar shape. Therefore, when the desks are arranged adjacent to each other, the left and right top plates A gap is prevented from being formed between them. In addition, since the top plate can be stacked with the top plate pivoted upward, the time and effort to attach and detach the top plate from the legs can be saved, and the stack height is reduced by the thickness of the top plate. , The stability of the stacked chairs increases.

The desk of the present invention
The leg body is provided with a pair of front and rear circular cross-sections that support the lower surfaces of both front and rear ends of the top board, and either of the front and rear sides of the top board with one of the front and rear side axes as a pivot. It is characterized by pivoting one end.
According to this feature, since the recumbent of the leg is used as the pivot of the top plate, the top plate can be stably supported and rotated smoothly in the vertical direction, and there is no need to provide a separate pivot. The number of parts is reduced.

The desk of the present invention
The top plate that has been rotated to the unused position by pivotally attaching the back of the front or rear end of the top plate to the front or rear side of the recumbent with a pivotal support is attached to the legs. And the rear surface of the front end portion or the rear end portion of the top plate abuts on the front surface or the rear surface of the upper portion of the leg body and stops.
According to this feature, since the top plate rotated to the non-use position is located in front of or behind the legs, the upper chair legs are attached to the lower chairs regardless of the size of the top board. The legs can be easily stacked without interfering with the top board. In addition, there is no need to provide a separate stopper to stop the top board at the non-use position, and it can be stacked so that the top board of the lower chair is positioned in front of or behind the top board of the upper chair. The top board of the upper chair is prevented from rotating downward.

The desk of the present invention
When the top plate is in the use position on the reverse side of the top plate on the opposite side of the pivot attachment portion, a locking piece that engages the lower surface of the upper end of the leg, and a direction in which the locking piece is detached from the leg A holding tool including an operation unit that can be moved is provided.
According to this feature, the top plate can be securely held at the use position by the holding tool, and the top plate at the use position unexpectedly rotates upward when the table is moved while holding the top plate. Is prevented. In addition, since the holder is positioned between the top plates of the stacked desks, the top plates are not in direct contact with each other, and the risk of forming scratches or the like on the surface of the top plate is reduced.

The desk of the present invention
The top plate is pivotally attached to both side end portions of the front or rear recumbent with a pivotal tool so that the back surface of the front end portion or rear end portion of the top plate is pivotally attached. The tool is characterized by having a deforming portion that is elastically deformed by contacting the leg when the top plate is rotated.
According to this feature, when the top plate is rotated, the deformed portion is elastically deformed, and this elastic deformation force becomes a resistance, so that the top plate slowly falls from the non-use position to the use position. Can be prevented from falling down.

1 is a front view of a desk in Example 1. FIG. Similarly, it is a left side view. Similarly, it is a rear view. It is a back perspective view of a desk when a top plate is made into a non-use position. Similarly, it is a side view. Similarly, it is a plan view. It is an expansion vertical side view of a top-plate pivot part. It is an expansion vertical front view of a holder mounting part. It is a side view of the state which stacked the some desk. It is a back perspective view of a desk when the top plate in Example 2 is made into a non-use position. It is an expansion vertical side view of a top-plate pivot part. It is an expansion perspective view of a pivot tool. It is an expansion perspective view when a pivotal support contact | abuts to the front horizontal ridge. It is an expanded vertical rear view of a pivot tool.

  EMBODIMENT OF THE INVENTION The form for implementing the desk concerning this invention is demonstrated below based on an Example.

  The desk according to the first embodiment will be described with reference to FIGS. 1 is a front view of a learning desk according to the present invention used in a school or the like, FIG. 2 is a left side view, FIG. 3 is a rear view, and FIG. 4 is a view when the top plate is rotated to a non-use position. A rear perspective view, FIG. 5 is a side view, and FIG. 6 is a plan view. In the following description, the right side of FIGS. 2 and 5 and the upper side of FIG. 6 are the front side of the desk on which the chair on which the user sits is arranged.

  As shown in FIGS. 1 to 6, the leg body 2 of the desk 1 has a lower end connected to a base leg 3 made of a U-shaped pipe facing forward in plan view and front ends of the left and right side leg rods 3a and 3a. A pair of left and right pipe rear legs with lower ends coupled to the upper surfaces of both side ends of the rear leg 3b facing the left and right sides of the base leg 3 5 and 5. As shown in FIGS. 4 and 5, the front end of the front horizontal rod 6 connected to the upper ends of both rear legs 5 is coupled to the rear surfaces of both sides of the front horizontal rod 4 a facing the left and right directions of the upper ends of the front legs 4. ing.

  Moreover, as shown in FIG. 6, the opposing surfaces of the rear end portions of the left and right forward horizontal rods 6 and 6 are connected by a rear horizontal rod 7 made of a pipe. The front and rear horizontal rods 4a, 7 and the left and right forward horizontal rods 6 and 6 support the lower surfaces of the front and rear ends of the top plate 12 and the lower surfaces of the left and right ends, respectively. It has become.

  As shown in FIGS. 1 and 3, the separation dimension of the left and right vertical rods 4 b and 4 b facing the vertical direction in the front leg 4 is larger than the separation dimension of the rear leg 5. As shown in FIG. 6, the distance between the left and right side leg rods 3 a and 3 a of the base leg 3 is larger than the distance between the left and right forward horizontal rods 6 and 6.

  As shown in FIG. 2, the left and right vertical rods 4 b are slightly inclined rearward and upward in a side view. Wire-shaped article storage shelves 8 that open forward and upward are attached to the frame-shaped space portion surrounded by the front reed 4a, the rear reed 7 and the left and right front horizontal reeds 6 and 6. . In other words, the article storage shelf 8 has an outwardly facing horizontal piece 9a, 9a at the upper end of the side plates 9, 9 having an inverted L shape fixed to the both side surfaces, and an upper surface of the left and right forward horizontal pieces 6,6. By attaching to the front side ridge 4a, the front side ridge 4a, the rear side ridge 7 and the left and right front horizontal ridges 6 and 6 are attached so as to be positioned below. Reference numeral 10 denotes a curtain plate attached to the upper ends of the rear legs 5 and 5, and reference numerals 11 and 11 are fixed so as to project outwardly at the lower ends of both side surfaces of the article storage shelf 8. This is a hook for hanging articles.

  The front side rail 4 a at the upper end of the front leg 4 has the front side rail 4 a as a pivot, and the back surfaces of both sides of the front end of the top plate 12 are moved forward and upward by a pair of left and right pivot supports 13, 13. It is pivotally attached so that it can rotate. The left and right dimensions of the top plate 12 are slightly larger than the left and right maximum dimensions of the leg 2. The pivot support 13 is made of a material such as synthetic resin.

  As shown in the cross-sectional view of FIG. 7, the pivotal support 13 includes a semicircular cross-section receiving portion 13a that opens upward, and a mounting portion 13b that faces in the front-rear direction. The top plate 12 is directed upward with the front side ridge 4a as a center by fitting the mounting portion 13b to the back surface of the front end portion of the top plate 12 with two countersunk screws 14. It is pivotally attached so that it can rotate. It should be noted that the top plate 12 has an angle slightly smaller than 90 degrees from the almost horizontal use position, that is, the back surface of the front end portion of the top plate 12 is in contact with the front surface of the upper end portion of the vertical rod 4b of the front leg 4. It can be rotated upward to the unused position where it comes into contact.

  As shown in the cross-sectional views of FIGS. 4 and 8, the top plate 12 is held in the horizontal use position on the rear surfaces of the left and right ends of the rear end portion of the top plate 12 outside the left and right forward horizontal cage 6. The holders 15 and 15 are screwed. The holder 15 is formed of a material such as synthetic resin.

  The holding tool 15 includes a locking piece 15b urged by a spring (not shown) housed in the holding tool body 15a so as to always protrude toward the front horizontal rod 6 side, and a lower surface of the holding tool body 15a. The locking piece 15b is provided with an operation knob 15c that can be operated so as to be pulled from the side toward the holder body 15a against the internal spring. Is engaged with the lower surface of the side end portion of the outward horizontal piece 9a of the side plate 9 in the article storage shelf 8, so that the top plate 12 is held in a horizontal use position. The top plate 12 can be rotated upward by operating the operation knob 15c outward to release the engagement between the locking piece 15b and the outward horizontal piece 9a.

  When stacking the desks 1, as shown in FIG. 9, the top plate 12 of the upper and lower chairs 1 is turned upward as much as possible to make it a non-use position, and on the rear surface side of the top plate 12 of the lower chair 1 The top plate 12 of the chair 1 may be superposed so that the leg 2 of the upper chair 1 is fitted to the leg 2 of the lower chair 1 from above. At this time, the lower ends of the hooks 11 projecting from the lower ends of both side surfaces of the article storage shelf 8 of the upper chair 1 contact the upper surface of the outward horizontal piece 9 a of the side plate 9 in the article storage shelf 8 of the lower chair 1. Stacked to touch.

  When stacked in this manner, the top 12 of the lower chair 1 is positioned in front of the top 12 of the upper chair 1 so that the top 12 of the upper chair 1 rotates downward. Is prevented. Further, since the holder 15 is positioned between the front and rear top plates 12 and acts as a spacer, the possibility that the top plates 12 come into contact with each other to cause scratches on the surface is reduced.

  As described above, in the desk 1 of the first embodiment, the top plate 12 having the front end portion pivotally attached to the front side ridge 4a facing the left and right direction of the front upper end portion of the leg 2 is not directed to the vertical direction. By rotating to the use position, a plurality of desks 1 can be stacked without interfering with the top board 12 of the lower desk. Accordingly, the front / rear and left / right dimensions of the top plate 12 are not limited by the leg 2 and can be made larger than the planar shape thereof. Therefore, when the desks 1 are arranged adjacent to each other on the left and right, The formation of a gap between the top plates 12 is prevented.

  Further, since the top plate 12 can be stacked while being rotated upward, it is possible to save the trouble of attaching and detaching the top plate from the leg as in the prior art, and the stack height is low by the thickness of the top plate 12. As a result, the stability of the chairs that are stacked multiple times increases.

  Furthermore, the back surface of the rear end of the top plate 12 is pivotally attached to the upper horizontal arm 4a of the leg 2 by the pivotal support 13, and when the top 12 is rotated to the non-use position, the front of the leg 2 is The top plate 12 is positioned on the top plate 12 so that the leg 2 of the upper chair 1 does not interfere with the top plate 12 on the leg 2 of the lower chair 1 regardless of the size of the top plate 12. Can be easily stacked. Moreover, when the top plate 12 is rotated to the non-use position, the back surface of the front end portion comes into contact with the front surface of the upper end portion of the vertical rod 4b of the front leg 4 and stops, so the top plate 12 is stopped at the non-use position. There is no need to provide a separate stopper.

  On the back surface of the rear end portion of the top plate 12, there is provided a holder 15 that holds the top plate 12 in the use position, so that the top plate 12 can be securely held in the use position by the holder 15, When the desk 1 is moved with the top plate 12, the top plate 12 is prevented from rotating upwards unexpectedly.

  A desk according to the second embodiment will be described with reference to FIGS. As shown in FIG. 10, in the desk 1 of the second embodiment, the configuration of the pivot supports 13 ′ and 13 ′ is different from that of the pivot supports 13 and 13 of the first embodiment. The pivotal support 13 is made of a material such as synthetic resin as in the first embodiment.

  As shown in FIGS. 11 and 12, the pivotal support 13 ′ of the second embodiment has a substantially rectangular shape wider than the pivotal support 13 of the first embodiment, and is a semicircular cross-section receiving portion 13 a that opens upward. And a mounting portion 13b. Similarly to the first embodiment, the pivotal support 13 ′ of the second embodiment is configured such that the receiving portion 13 a is fitted to the side end portion of the front lateral rib 4 a from below, and the mounting portion 13 b is secured by four countersunk screws 14. Fix to the back of the front end of the top plate 12.

  Further, the side surface of the pivotal support 13 ′ has a protruding portion 13 c protruding in the left-right direction and a slit hole 13 d provided in the vicinity of the protruding portion 13 c. As shown in FIG. 13, when the top plate 12 is rotated from the non-use position to the use position, the convex portion 13 c comes into contact with the forward horizontal rod 6 of the leg 2, and the convex portion 13 c becomes the forward horizontal rod 6. The deformed portion 13e, which is a portion where the slit hole 13d in the pivotal support 13 'is formed, is elastically deformed.

  By doing in this way, when the top plate 12 rotates, the deforming portion 13e is elastically deformed, and this elastic deformation force becomes resistance, so that the top plate 12 slowly falls from the non-use position to the use position. A sudden fall of the top 12 can be prevented. The pivotal support 13 'has a left-right symmetric shape, and if one kind of pivotal support 13' is manufactured, it can be attached at either the left or right position of the front recumbent 4a. .

  As shown in FIG. 14, when the top 12 is in the use position, the convex portion 13 c of the pivotal support 13 ′ gets over the forward horizontal rod 6, and the deformed portion 13 e that is elastically deformed again is restored, and the convex portion 13 c is restored. Is brought into contact with the lower surface of the forward horizontal rod 6. By doing in this way, it can prevent that the deformation | transformation part 13e is elastically deformed for a long time, and is distorted or damaged. Further, for example, even if the locking piece 15b of the holder 15 is detached from the forward horizontal rod 6 due to an inadvertent operation of the operation knob 15c, the convex portion 13c becomes a resistance and the top plate 12 is suddenly lifted. This can be prevented (see FIG. 8).

  Although the embodiments of the present invention have been described with reference to the drawings, the specific configuration is not limited to these embodiments, and modifications and additions within the scope of the present invention are included in the present invention. It is.

  For example, in the above-described embodiment, the back surface of the front end portion of the top plate 12 is pivotally attached to the front horizontal shaft 4a of the front leg 4 which is a pivot, but the rear end portions of the left and right forward horizontal rods 6 and 6 are pivoted. With the rear side roller 7 connecting the opposing surfaces as pivots, the rear side surface of the rear end of the top plate 12 is turned to the rear side beam 7 using the same pivot support 13 as above. It can also be pivoted so that it can be moved. In this case, the holder 15 may be attached to the back surface of the front end portion of the top plate 12, and the curtain plate 10 may be omitted.

  In the above embodiment, the locking piece 15 b of the holder 15 is engaged with the lower surface of the outward horizontal piece 9 a of the article storage shelf 8 that is substantially integrated with the leg 2. When is omitted, the lower surface of the forward horizontal rod 6 of the leg 2 may be directly engaged from the outside.

1 Desk 2 Leg 3 Base leg 3a Side leg 3b Rear leg 4 Front leg 4a Front lying (Axis)
4b Longitudinal rod 5 Rear leg 6 Forward horizontal rod 7
8 Article storage shelf 9 Side plate 9a Outward horizontal piece 10 Curtain plate 11 Hook 12 Top plate 13 Pivoting tool 13a Receiving portion 13b Mounting portion 13c Protruding portion 13d Slit hole 13e Deformation portion 14 Countersunk screw 15 Holding tool 15a Holding tool body 15b Stopper 15c Operation knob (operation unit)

Claims (5)

  A pivot that faces in the left-right direction is provided at either the front or rear end of the upper leg that has been released at the bottom, and the top or the rear end of the top plate is almost horizontal. A desk characterized in that it is pivotably mounted in a vertical direction from a position to a non-use position facing in the vertical direction.   The leg body is provided with a pair of front and rear circular cross-sections that support the lower surfaces of both front and rear end portions of the top board, and either of the front and rear sides of the top board using either one of the front or rear side pivots as a pivot. 2. The desk according to claim 1, wherein one of the ends is pivotally attached.   The top plate rotated to the non-use position by pivotally attaching the back surface of the front or rear end of the top plate to the front or rear side with the pivotal support on the both side ends of the top plate. 3. The desk according to claim 2, wherein the desk is located at the front or rear of the top plate, and the back surface of the front end portion or the rear end portion of the top plate is brought into contact with the front surface or the rear surface of the upper portion of the leg to stop. .   When the top plate is in the use position on the reverse side of the top plate on the opposite side of the pivot attachment portion, a locking piece that engages the lower surface of the upper end of the leg, and a direction in which the locking piece is detached from the leg The desk according to any one of claims 1 to 3, further comprising a holder having an operation unit that can be moved.   The top plate is pivotally attached to both side end portions of the front or rear recumbent with a pivotal tool so that the back surface of the front end portion or rear end portion of the top plate is pivotally attached. The desk according to any one of claims 2 to 4, wherein the tool has a deforming portion that is elastically deformed by contact with the leg when the top plate is rotated.

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