JP6609114B2 - desk - Google Patents

Description

The present invention, Ru der relates to desk (table) formed by connecting the vertical shaped Ashi杆horizontal shaped beam member.

  The desk has a structure in which the top plate is supported by the left and right legs, but the legs have various forms and structures. In the case of a wooden desk, it is composed of a single wide plate and is provided with a front and rear longitudinal grounding member at the lower end, or as disclosed in Patent Document 1, four front and rear left and right leg rods. There are things to prepare. In Patent Document 1, the lower ends of the front and rear leg rods are connected by a longitudinal beam material, and the beam material and the leg rod are fixed to the grounding body overlapping the lower surface with screws in an upward posture.

JP 2008-301973 A

  In wooden furniture, dowels (wooden pins) are often used for connection (joining) of members from the viewpoint of ease of assembly and aesthetics. In other words, dowel holes opened opposite to each other are formed on the contact surfaces of the two members, and dowels are forcibly fitted into these dowel holes, and an adhesive is applied to the dowels in order to increase the connection strength. Application is also performed.

  The leg of Patent Document 1 is provided with a grounding body. However, mainly due to a design requirement, the leg rod is grounded to the floor without providing the grounding body, and the front and rear leg rods are above the lower end (floor). It may be connected with a beam material at a position above the surface. In this case, if the foot rod and the beam are made of wood, they are connected using dowels as described above. However, if an external force is applied to widen the distance between the front and rear foot rods, the dowels may come off. It was.

  As one of the countermeasures against this point, it is conceivable to connect the foot rod and the beam material with a screw. However, when the screw penetrated into the foot rod is screwed into the beam material, the head of the screw is outside the foot rod. There is a problem that aesthetics deteriorate due to exposure. When the head of the screw is hidden in the countersink hole and the countersink hole is closed with a wooden plug, the structure becomes complicated and the cost increases, and the end face of the plug is exposed, so there is a sense of discomfort. can not deny.

  In addition, as a screwing method, it is also possible to obliquely drive the screw into the beam material in an inclined posture and screw it into the leg rod. However, this diagonally hitting method may cause the screw to hit the dowel, ensuring high fastening strength. There is a difficult problem.

  As another countermeasure, a method of using an L-shaped metal fitting and fixing it to the inner surface of the leg rod and the lower surface of the beam member with a screw can be considered. However, this method not only takes time for member management and screw work, but also has the problem that the vertical piece of the metal fitting is exposed below the beam material, which is liable to damage the beauty. In particular, the metal fittings have a metal texture and feel uncomfortable with wooden legs and beam materials.

  The present invention has been made to improve the current situation.

The present invention includes many configurations, examples of which are specified in each claim. Of these, the invention of claim 1
“ A bottom beam in a substantially horizontal position in contact with the top plate, two leg rods whose upper ends are connected to the top plate and long in the vertical direction, and opposite inner surfaces of the lower portions of the two leg rods With materials,
The lower surface of the end portions closer to the both leg rod of the lower beam member, have overhanging portion projecting facing downward is formed, the lower surface of the overhang, an inclined surface which becomes lower toward the Ashi杆And
The end of the lower beam member and the leg rod are a dowel in a horizontal posture disposed above an extension line of the lower horizontal surface of the lower beam member, and the leg from the inclined surface of the projecting portion below the dowel. It is fixed by a screw screwed towards the heel. "
Under the basic structure,
The screw is inclined posture to be higher toward the distal end, the tip of the screw is positioned below the extension line of the lower horizontal surface of the lower beam member, entirely the extension of the bis It is located below the line. ''
The structure is added.

In the invention 請 Motomeko 2, in claim 1,
"The inclined surface of the projecting portion, and spaced a screw insertion hole in which the screw head has passed through counterbore and communicating thereto conceal '
It is the composition.

The invention of claim 3, Oite to claim 1 or 2,
“It has four wooden legs, front and rear, left and right, and a pair of front and rear legs are connected by the wooden beam material. ”
It is the composition.
The invention of claim 3 does not exclude connecting the left and right front leg rods with a beam material or connecting the left and right rear leg rods with a beam material. In other words, not good Once at least the front and rear of the legs杆同workers has not been consolidated in the beam material.

  According to the first aspect of the present invention, since the overhang portion provided at the end of the beam member is fastened to the leg bar with the screw, high connection strength can be ensured. And since the overhang | projection part comprises a part of beam material, there is no sense of incongruity and the deterioration of an aesthetic appearance does not arise at all. Moreover, since the screwed position of the screw can be easily separated from the dowel by providing the overhanging portion, interference between the dowel and the screw can be avoided to ensure high fastening strength. Further, since the structure is simple, it is excellent in terms of cost.

The lower surface of Zhang Ri out part have an inclined surface, since the the lower surface of the lower surface and the projecting portion of the beam member is smoothly continuous, overhang at all no discomfort. For this reason, it is particularly beneficial in terms of aesthetics.

Further, when the countersink hole is provided in the overhanging portion as in claim 2 , it is possible to reliably prevent the head of the screw from being exposed and touching the human eye, so that the maintenance of the aesthetics is further ensured. Moreover, since the countersink hole and the screw insertion hole are inclined, it is easy to process the countersink hole and the screw insertion hole (the chuck holding the drill does not hit the beam material).

In many cases, the front and rear leg rods are connected by a beam material. Therefore, if the configuration of claim 3 is adopted, it can be applied to many desks and is highly versatile. That is, with the configuration of claim 3 , the true value of the present invention is particularly demonstrated. Moreover, in the structure of Claim 3 , since the lower surface of a beam material does not touch a human eye, it is preferable at the point of aesthetics.

In the present invention, since the dowel is located above the extension line of the lower surface of the lower beam material, and the screw is entirely located below the extension line, the necessary distance between the dowel and the screw is required. And can secure high fastening strength.

It is a front view of the desk concerning a 1st embodiment (the front board of a drawer is omitted). (A) is a perspective view of a desk, (B) is a BB view sectional view of (A). It is a vertical front view of the right end part of a desk. (A) is a partially broken side view of the desk, and (B) is an enlarged view of the main part of (A). (A) is a perspective view in the state which connected the desk and the storage device, (B) is a BB view sectional view of (A), and (C) is a bottom view of a connecting metal fitting.

(1). Outline of First Embodiment Next, an embodiment of the present invention will be described with reference to the drawings . This embodiment is applied to a wooden learning desk for children.

As shown in FIGS. 1 and 2, this desk has a horizontally long top plate 1 and left and right legs 2, and a pair of left and right drawers 3 are arranged on the bottom surface of the top plate 1 so as to be movable back and forth. Yes. The left and right legs 2 are made of wood board, and are composed of front and rear elongated leg rods 4, an upper beam member 5 connecting the upper portions thereof, and a lower beam member 6 connecting the lower portions of the front and rear leg rods 4, respectively. . The leg rod 4 and the upper and lower beam members 5 and 6 are arranged so that the thickness direction thereof faces the left and right direction, respectively. A portion of the leg rod 4 below the upper beam member 5 has a width that is gradually reduced toward the bottom, but the whole can be formed straight.

  The rear portions of the left and right legs 2 are connected by a rear curtain plate 7. In the space below the drawer 3, a wagon 8 with casters and a sleeve cabinet without casters can be arranged. As shown in FIG. 3, on the left and right sides of the top plate 1, a side frame plate 9 with the upper portion of the leg 2 overlapping from the outside is fixed with screws (not shown). The upper portion of the leg 2 is fixed with a plurality of front and rear (two) screws 11 via the eye nut 10.

  Further, the left and right side frame plates 9 are connected to each other by a reinforcing bar plate 13 which is overlapped with the lower surface and fixed with screws 12. The drawer 3 is supported by a side frame plate 9 and a center frame plate 14 (see FIG. 1) via a suspension rail 15 so as to be movable back and forth. The center frame plate 14 is erected on the reinforcing bar plate 13.

As shown in FIG. 4, the upper beam member 5 is sandwiched between front and rear leg rods 4, and these leg rods 4 and the upper beam member 5 are provided in a plurality of upper and lower pieces (four) that pass through them. The upper dowels 18 are connected. On the other hand, the lower beam member 6 is also sandwiched between the front and rear leg rods 4, and the leg rod 4 and the lower beam member 6 are connected by a lower dowel 19 penetrating both of them, and two upper and lower portions located at the lower portion. They are also connected by screws 20.

At both front and rear ends of the lower beam member 6, an overhanging portion 21 that protrudes downward in a state of overlapping with the inner surface 4 a of the leg rod 4 is formed, and the screw 20 penetrates the overhanging portion 21 to the leg rod 4. Screwed. In this case, the overhanging portion 21 has a substantially triangular shape in side view, and the lower surface 21 a is smoothly continuous with the lower horizontal surface 6 a of the lower beam member 6. Alternatively, the lower horizontal surface 6a of the lower beam member 6 and the lower surface 21a of the overhanging portion 21 are bent in a side view. For this reason, the overhang | projection part 21 does not stand out and there is no sense of incongruity.

The overhanging portion 21 is formed in a state where a screw insertion hole 22 through which the shaft of the screw 20 passes and a countersink hole 23 into which the head of the screw 20 is fitted are communicated with each other. The axis line (axial center line) 24 between the countersink hole 23 and the countersink hole 23 is inclined by a certain angle θ with respect to the lower beam material 6 so that the distance from the lower beam material 6 increases as the distance from the leg rod 4 increases. . For this reason, it is possible to easily process the screw insertion hole 22 and the counterbore hole 23 (drilling or end milling) in a state where the chuck does not hit the lower beam material 6.

The space between the upper and lower lower dowels 19 is increased as much as possible. For this reason, a high resistance is exerted against an external force that twists the lower beam member 6 around the axis. That is, the positioning function by the upper and lower lower dowels 19 is high. The lower dowel 19 located below is located above the extension line 25 of the lower horizontal surface 6 a of the lower beam member 6, and the screw 20 is entirely located below the extension line 5. For this reason, a required space | interval can be taken between the dowel 18 and the bis | screw 20, and high fastening strength is securable.

  Note that the screw 20 may be allowed to enter above the extension line 25. Moreover, it is preferable that a pilot hole into which the screw 20 is screwed is made in the leg rod 4 in advance. Furthermore, it is possible to embed a demon nut in the leg rod 4 and screw the screw 20 into this, and in this case, a metric screw is used for the screw 20. An overhang portion 21 may be provided on the upper beam member 5 and screwed to the leg rod 4.

  The desk of this embodiment can be connected to the storage device 27 as shown in FIG. The storage device 27 includes left and right outer plates 28, a back plate 29, and a bottom plate 30, and the interior is divided into three storage areas 32, 33, and 34 by two left and right partition plates 31. The central storage area 33 is a shelf having a center upper shelf plate 35 fixed at all times, and the left and right storage areas 33 and 35 can be selectively changed into a shelf and a clothes storage.

  The replaceable shelf includes a side upper shelf 36 and a movable shelf located below the side shelf 36, and the clothes storage unit includes a hanging bar 37 on which a hanger can be suspended. The side upper shelf plate 36 is fixed to the outer side plate 28 and the partition plate 31 via metal fittings (not shown). Further, the center upper shelf board 35 and the side upper shelf board 36 are at the same height as the top board 1 of the desk, and one leg 2 is removed from the desk so that the upper shelf boards 35 and 36 of the desk and the storage device 27 are arranged. Each is connected by an L-shaped connecting bracket 38. The removed leg 2 can be fixed to the rear surface of the rear curtain plate 7.

  The vertical piece of the connecting fitting 38 is fixed to the side frame plate 9 of the desk with a lateral screw 39, and the horizontal piece of the connecting fitting 38 is fixed to the top plate 1 of the desk and the upper shelf boards 35, 36 of the storage device 27 with the upward screw 40. Is done. In the connected state, the top plate 1 and the upper shelf plates 35 and 36 are on the same plane, so that the top plate 1 and the upper shelf plates 35 and 36 are set to the same thickness. The attachment of the connecting bracket 38 to the desk uses a demon nut 10 for fixing the leg 2 to the side frame plate 9.

The present invention can be embodied in a desk . Therefore, it can be used industrially.

DESCRIPTION OF SYMBOLS 1 Top plate 2 Leg 4 Leg rod 5 Upper beam material 6 Lower beam material 6a Lower surface 19 Lower dowel 20 Screw 21 Overhang | projection part 21a Lower surface 22 Screw insertion hole 23 Counterbore hole 24 Center axis of hole

Claims (3)

A top beam, two leg rods whose upper ends are connected to the top plate and are long in the vertical direction, and a lower beam material in a substantially horizontal posture that is in contact with opposite inner surfaces of the lower portions of the two leg rods And
The lower surface of the end portions closer to the both leg rod of the lower beam member, have overhanging portion projecting facing downward is formed, the lower surface of the overhang, an inclined surface which becomes lower toward the Ashi杆And
The end of the lower beam member and the leg rod are a dowel in a horizontal posture disposed above an extension line of the lower horizontal surface of the lower beam member, and the leg from the inclined surface of the projecting portion below the dowel. It is the structure fixed with the screw screwed in toward the cage,
The screw is inclined so as to become higher toward the tip, the tip of the screw is located below the extension line of the lower horizontal surface of the lower beam material, and the entire screw is the extension line. Located below,
desk. In the inclined surface of the overhang portion, a counterbore hole where the head of the screw is hidden and a screw insertion hole communicating with the counterbore hole are opened,
The desk according to claim 1. It has four wooden legs, front and rear, left and right, and a pair of front and rear legs are connected by the wooden beam material, respectively.
The desk according to claim 1 or 2 .

Images