JP2019022806A - Top board lift-type desk - Google Patents

Abstract

To provide a top board lift-type desk to be used in a comfortable use environment by restricting an end part of a top board from biting into a user.SOLUTION: A top board lift-type desk includes: a top board 4 having a top surface 4t in an upper surface; and leg bodies having lift mechanism units for supporting the top board 4 to enable vertical lifting at least from a position where a user can use the desk in a seated state to a position where a user can use the desk in a standing state. The top board 4 has an upper slant surface F2 having a downward inclination toward a front side on an upper side of a front end part 4a on a side of a user opposed to the top board 4. The top board 4 is formed to have a continuously curved surface where parts from a front end edge of the top surface 4t to a front end surface 4f of the top board 4 over an upper slant surface F2 are integrated.SELECTED DRAWING: Figure 5

Description

  The present invention relates to a top / bottom desk.

  In office spaces such as offices and public facilities, desks are generally arranged to provide a work area for the office workers. In such a desk, the height of the top plate that is easy to work with varies greatly depending on the individual depending on the physique, gender, preference, work content, etc. of the office worker. In view of this, there has been provided a top-table lifting desk capable of changing the height of the top plate up and down.

  As a technique for changing the height of the top plate up and down, a configuration using a gas spring (see, for example, Patent Document 1 and Patent Document 2), a configuration using a gear, and the like have been proposed. In addition, a configuration using an electric drive unit (elevating drive unit) that can automatically change the top plate height up and down has been proposed (see, for example, Patent Document 3, Patent Document 4, and Patent Document 5).

Japanese Patent No. 3371959 Japanese Patent No. 3391285 Utility Model Registration No. 316439 JP 2014-113505 A Japanese Patent Laid-Open No. 2014-140753

However, when the top plate is placed at a relatively high position, if the user steps over the top plate or leans on the front end of the top plate, the front end of the top plate is placed on the front of the trunk or arm. Bite into. If such a state lasts for a long time or a plurality of times, the user's environment may be impaired due to a user's discomfort. In particular, when standing for a long time, the user often leans forward and leans on the front end of the top plate. Then, a large force is applied to the user's body part leaning on the front end of the top plate, and the front end of the top plate bites more.
An object of the present invention made there is to provide a top-plate elevating desk that can suppress the front end portion of the top plate from biting into the user and can be used in a comfortable use environment.

The present invention employs the following means in order to solve the above problems.
The top plate elevating desk according to the present invention includes a top plate having a work surface on an upper surface, and the top plate in a vertical direction to a position where the user can use at least a position in which the user can stand while sitting. And a leg provided with an elevating mechanism unit that is supported so as to be able to be raised and lowered, and the top plate is an upper portion that is inclined downward and forward toward an upper side of a front end portion of the top plate facing a user. The top plate is integrally formed in a curved surface shape in which a portion from the front end edge of the upper surface to the front end surface of the top plate through the upper inclined portion is continuous.

  Further, in the top-plate elevating desk according to the present invention, the top plate constitutes an upper curved surface connecting the upper surface and the upper inclined portion, and an upper portion of the front end surface, and forward from the upper inclined portion. A front end upper curved surface that extends downward while curving as it goes, and a lower end curved surface that forms a lower portion of the front end surface and extends rearward while curving downward from the front end upper curved surface; Also good.

  Further, in the top-plate elevating desk according to the present invention, the top plate may have a lower flat surface extending rearward from the front end lower curved surface.

  Further, the top plate elevating desk according to the present invention may be provided with an operation unit for operating the elevating operation of the elevating mechanism unit at the lower side of the top plate and behind the front lower curved surface. Good.

  Further, in the top plate elevating desk according to the present invention, the top plate covers a steel support material having a shape along the upper surface, the upper inclined portion, and the front end surface, and a surface of the support material. And a covering material.

  According to the top plate elevating desk according to the present invention, by forming the upper inclined portion at the end portion of the top plate, the end portion of the top plate is prevented from biting into the user, and used in a comfortable use environment. Is possible.

It is the perspective view which looked at the top-plate raising / lowering desk which concerns on one Embodiment of this invention from diagonally forward. It is the perspective view which looked at the said top-plate raising / lowering desk from diagonally backward. It is side sectional drawing of the top plate of the said top-plate elevating desk. It is side sectional drawing of the rear-end part of the said top plate. It is side sectional drawing of the front-end part of the said top plate.

  Hereinafter, with reference to an accompanying drawing, a form for carrying out a top plate elevating desk by the present invention is explained. However, the present invention is not limited only to this embodiment.

FIG. 1 is a perspective view of a top / bottom desk according to an embodiment of the present invention as viewed obliquely from the front. FIG. 2 is a perspective view of the top / bottom desk as seen from obliquely behind.
As shown in FIGS. 1 and 2, the top / bottom desk 1 is composed of a pair of legs 2 and 2, a connecting member (not shown) for connecting the pair of legs 2 and 2, and a rectangular shape in plan view. And a flat plate-like top plate 4.

The legs 2 and 2 are arranged at intervals in the long side direction of the top plate 4 (hereinafter, this direction is appropriately referred to as the width direction).
Each leg 2 includes a lower support 8 disposed on the floor, an upper support 9 disposed above the lower support 8 and supporting the lower surface of the top plate 4, and the lower support 8 and the upper An elevating mechanism unit (support) 5 that is connected to the support 9 so as to be extendable and raises and lowers the top plate 4 from a usable position in a state where the user is sitting at least to a usable position while standing. It has.

The lower support 8 is provided so as to extend in the short side direction of the top plate 4 (hereinafter, this direction is appropriately referred to as the front-rear direction). The lower support 8 is provided with adjusters 8a and 8a on the lower surfaces of the front and rear end portions, respectively, so that the height from the floor surface can be adjusted.
The upper support 9 is disposed above the lower support 8 and is provided to extend in the front-rear direction.

The elevating mechanism unit 5 extends in the vertical direction and is provided so as to connect the lower support 8 and the upper support 9. Here, the elevating mechanism unit 5 is disposed in the middle of the lower support 8 and the upper support 9 in the front-rear direction, but is offset backward from the center of the lower support 8 and the upper support 9 in the front-rear direction. It is arranged at the position.
The elevating mechanism unit 5 has a conventionally known configuration, and the elevating mechanism unit 5 includes a plurality of cylindrical bodies 5a and 5b having different plane cross-sectional dimensions. The cylindrical body 5b is inserted inside the cylindrical body 5a having the largest flat cross-sectional dimension, and the cylindrical body 5b inserted inside the cylindrical body 5a by the drive mechanism (not shown) protrudes and descends in the vertical direction. To do. In this embodiment, two cylindrical bodies 5b whose outer diameters are sequentially reduced are inserted inside the cylindrical body 5a, and the lifting mechanism unit 5 expands and contracts in two stages. Thus, the elevating mechanism unit 5 supports the upper support 9 so that it can move up and down with respect to the lower support 8 by extending and contracting in the vertical direction.

The top plate 4 is supported and provided on the upper supports 9 and 9 of the legs 2 and 2 and the upper surface of a connecting member (not shown). The top plate 4 is joined to the upper supports 9 and 9 and a connecting member (not shown) by welding or bolts.
In addition, wiring insertion holes 21 penetrating the top plate 4 in the vertical direction are formed in the left and right sides of the rear portion of the top plate 4.

FIG. 3 is a side cross-sectional view of the top plate of the above-described top / bottom desk. FIG. 4 is a side sectional view of the rear end portion of the top plate. FIG. 5 is a side sectional view of the front end portion of the top plate.
As shown in FIGS. 1-3, the top plate 4 is provided with the top surface (work surface) 4t which forms a horizontal work surface on the upper surface. The rear end portion 4b of the top plate 4 and the side end portions 4c, 4c on both sides in the width direction are respectively a hanging surface Fv that hangs vertically downward from the outer peripheral end of the top surface 4t, and the bottom plate 4 from the lower end of the hanging surface Fv. And a folded surface Fc folded inward in the horizontal direction.
As shown in FIGS. 3 and 4, a resin cover material 10 that covers the drooping surface Fv is attached to the rear end portion 4 b and the side end portions 4 c and 4 c of the top plate 4.

As shown in FIGS. 3 and 5, the front end portion 4a of the top plate 4 is continuous with the top surface 4t, and includes an upper curved surface F1, an upper slant surface (upper inclined portion) F2, and a front end upper curved surface (front end surface). F3, front end lower curved surface (lower inclined portion, front end surface) F4, and lower plane F5.
The upper curved surface F1 is formed to bend downward gradually from the top surface 4t toward the front.
The upper slant surface F2 is continuous with the upper curved surface F1, and is formed in a flat shape that is inclined downward toward the front. Here, the upper slant surface F2 is formed so that the downward inclination angle with respect to the horizontal direction is, for example, 10 to 20 °, more preferably 15 to 20 °.
The front end upper curved surface F3 constitutes a part of the front end surface 4f of the front end portion 4a of the top plate 4, is continuous with the upper slant surface F2, and is formed to be curved downward toward the front.
The front end lower curved surface F4 constitutes the remaining portion of the front end surface of the front end portion 4a of the top plate 4, is continuous with the front end upper curved surface F3, and is formed to be curved backwards downward.
The lower plane F5 is continuous with the front end lower curved surface F4 and is formed to extend rearward in parallel with the top surface 4t.

  As shown in FIG. 3, such a top plate 4 includes a base member (support material) 11, a surface covering material (covering material) 12, a rear reinforcing material 13, an intermediate reinforcing material 14, and a front reinforcing material. 15.

  The base member 11 is made of a steel plate, and includes the top surface 4t, the hanging surface Fv of the rear end 4b and the side ends 4c, 4c, the folded surface Fc, the upper curved surface F1, the upper slant surface F2, and the upper front end of the front end 4a The bending process and the bending process are performed so that the curved surface F3, the front end lower curved surface F4, and the lower flat surface F5 are integrally formed.

  The surface covering material 12 is made of, for example, melamine resin or the like, and is formed so as to cover the entire outer surface 11 f (see FIGS. 4 and 5) of the base member 11.

As shown in FIG. 4, the rear reinforcing member 13 is provided below the rear end portion of the base member 11. The rear reinforcing member 13 is formed to extend in the width direction of the top plate 4. The rear reinforcing member 13 includes a rear surface 13a along the inside of the hanging surface Fv, a lower surface 13b extending forward from the lower end of the rear surface 13a, a front surface 13c extending upward from the front end of the lower surface 13b, and a top plate from the upper end of the front surface 13c. And a front joint surface 13 d that extends forward along the lower surface 4 u of 4. On the lower surface 13b, a groove-shaped rib 13e extending in the width direction of the top plate 4 is formed.
The rear reinforcing member 13 is formed by bending a steel plate. The rear reinforcing member 13 has a rear surface 13a along the drooping surface Fv of the rear end portion 4b of the top plate 4, and a rear end portion of the lower surface 13b along the folded surface Fc of the rear end portion 4b of the top plate 4. The surface 13d is disposed along the lower surface 4u of the top plate 4, and is joined to the top plate 4 by spot welding or the like.

  As shown in FIG. 3, for example, two intermediate reinforcing members 14 are provided on the lower surface 4 u of the top plate 4 at intervals in the front-rear direction. The intermediate reinforcing members 14 are formed so as to extend in the width direction of the top plate 4. Each intermediate reinforcing member 14 includes a front joint surface 14a and a rear joint surface 14b along the lower surface 4u of the top plate 4, a front surface 14c that hangs vertically downward from the front joint surface 14a, and a vertical joint from the rear joint surface 14b. The rear surface 14d that hangs down and the lower surface 14e that is located in the horizontal plane and connects the lower end of the front surface 14c and the lower end of the rear surface 14d are integrally provided. The intermediate reinforcing material 14 is formed by bending a steel plate. The intermediate reinforcing member 14 is joined by spot welding or the like in a state where the front joint surface 14a and the rear joint surface 14b are in contact with the lower surface 4u of the top plate 4, respectively.

  As shown in FIG. 5, the front reinforcing member 15 includes a rear joint surface 15a along the lower surface 4u of the top plate 4, a rear surface 15b hanging vertically downward from the rear joint surface 15a, and a front end from the lower end of the rear surface 15b. A lower surface 15c extending upward, a step portion 15d bent upward at the front end of the lower surface 15c, a front support surface 15e extending forward from the step portion 15d and extending along the upper surface of the lower flat surface F5 of the base member 11, A front surface 15f extending vertically upward from the front end of the portion support surface 15e; a front inclined surface 15g extending obliquely upward from the upper end of the front surface 15f rearward and extending along the lower side of the upper slant surface F2 of the base member 11; Are integrally provided. The front reinforcing member 15 is formed by bending a steel plate. The front reinforcing member 15 has a front support surface 15e, a front surface 15f, and a front inclined surface 15g inserted between the lower plane F5 and the upper slant surface F2 of the front end 4a of the top plate 4 from the rear. The rear joint surface 15a is abutted against the lower surface 4u of the top plate 4 and is joined by spot welding or the like.

The top plate elevating desk 1 has a control unit (not shown) for controlling the operation of the elevating mechanism units 5 and 5 of the left and right legs 2 and 2, and for inputting an elevating operation signal to the control unit (not shown). And an operation unit 7.
The control unit (not shown) is fixed to, for example, the lower surface 4u of the top plate 4 and a connecting member (not shown). The control unit (not shown) is connected to a power cable 20 (see FIG. 1) connected to a commercial power source provided in the office space where the top / bottom desk 1 is disposed.

The operation unit 7 is electrically connected to a control unit (not shown) via a wiring cable (not shown).
The operation unit 7 is disposed below the front end 4 a of the top plate 4. As shown in FIGS. 3 and 5, the operation portion 7 is provided on the lower surface 15 c of the front reinforcing member 15 via a mounting bracket 22. The mounting bracket 22 has, for example, an L shape in a side sectional view, and a fixing portion 22a that is fixed to the lower surface 15c of the front reinforcing member 15 by screws (not shown) or the like, and an operation portion support that extends downward from the front end of the fixing portion 22a. And a portion 22b. The operation unit 7 is attached to the front surface of the operation unit support unit 22b by screws (not shown) or the like.
Here, the operation unit 7 attached to the mounting bracket 22 is located behind the front end 4a of the top plate 4 so that the operation unit 7 attached to the operation unit support unit 22b is located in the space below the top plate 4. It is provided to be located.

  The mounting bracket 22 is provided so as to be positioned obliquely downward as viewed from the user facing the front end portion 4a of the top plate 4. Since the front end portion 4a of the top plate 4 has a front end lower curved surface F4 formed on the lower side thereof, the space below the top plate 4 is lower than when the lower side of the front end portion 4a is formed by a vertical surface. The operation unit 7 located inside is easily visible.

  When the user inputs a predetermined operation to the operation unit 7, an operation signal is transmitted from the operation unit 7 to a control unit (not shown) via a wiring cable (not shown). When receiving an operation signal from the operation unit 7, the control unit (not shown) outputs a command signal that causes the elevating mechanism unit 5 to perform the elevating operation based on the received signal. When receiving the command signal, the lifting mechanism units 5 and 5 of the pair of left and right legs 2 and 2 are driven to extend and contract in accordance with the command signal, thereby adjusting the height of the top 4. Here, the height of the top plate 4 is, for example, 650 mm to 1250 mm from the floor as the widest range so that it can be lifted up to a usable position while standing at least from a usable position while the user is sitting. As a range that is assumed to be used, it is possible to adjust within a range of 700 mm to 1150 mm from the floor surface.

  According to the top plate elevating desk 1 as described above, the upper slant surface F2 that is inclined downward toward the front is provided on the upper side of the front end portion 4a of the top plate 4 so that the user's torso, arms, etc. In addition, the front end portion 4a of the top plate 4 can be prevented from biting in. Thereby, it becomes possible to use the top-plate elevating desk 1 in a comfortable use environment. Even if the user stands for a long time and the user leans forward and leans on the front end 4a of the top plate 4, the front end 4a of the top plate 4 bites into the user's body part. Can be suppressed.

  Moreover, the top plate 4 has a front end lower curved surface F4 that is inclined rearward and downward on the lower side of the front end portion 4a. By comprising in this way, the visual field to the downward space of the top plate 4 spreads compared with the structure which does not form the front end lower curved surface F4 below the front end part 4a of the top plate 4. Further, the front end portion 4a of the support can be made thin, and the appearance of the top plate 4 can be improved.

  Further, an operation unit 7 for operating the lifting mechanism unit 5 is provided below the front end portion 4a of the top plate 4 and behind the front end lower curved surface F4. Thus, in the configuration, the visibility of the operation unit 7 provided on the lower side of the front end portion 4a of the top plate 4 is enhanced by the front end lower curved surface F4. Therefore, the operability when the user raises and lowers the top plate 4 up and down can be improved.

  In addition, the top plate 4 has a top surface 4t, an upper slant surface F2, a front end upper curved surface F3, and a front end lower curved surface F4 which are integrally formed continuously so that the outer surface of the top plate 4 is smooth. Become. Furthermore, when the shape of the front end portion 4a of the top plate 4 as described above is realized by, for example, a wood material, it is necessary to ensure a large vertical thickness of the front end portion 4a in order to ensure the strength of the front end portion 4a. There is. On the other hand, the top plate 4 is composed of the steel base member 11 and the surface covering material 12, so that the strength of the top plate 4 is ensured while the thickness of the front end portion 4a of the top plate 4 is kept thin. It becomes possible to do.

Moreover, in the top plate elevating desk 1 provided with the top plate 4 as described above, the leg body 2 has an elevating mechanism unit 5 in the middle part of the top plate 4. As described above, when the lifting mechanism unit 5 that constitutes the support column of the leg 2 is positioned at the intermediate portion in the front-rear direction of the top plate 4, if a load is applied to the front end portion 4 a of the top plate 4, the lifting mechanism unit 5. A large moment acts on. In particular, in the top / bottom desk 1 that can move the top 4 up and down, if the top 4 is lifted and the front end 4a of the top 4 is subjected to a load, the tipping resistance is lowered.
On the other hand, since the upper slant surface F2 is formed on the front end portion 4a of the top plate 4, the upper slant surface F2 can be put on the top plate 4 even if a hand is placed or an article is placed thereon. It is hard to put on. Therefore, the region where the load is applied by placing a hand on the top plate 4 or placing an article is the region behind the upper slant surface F2. Therefore, the point of application of the load is closer to the lifting mechanism unit 5 and the moment acting on the lifting mechanism unit 5 is reduced. Thereby, the fall-proof property of the top plate elevating desk 1 can be improved.

  Moreover, in the top plate 4, the upper slant surface F2 is formed only at the front end portion 4a, and the rear end portion 4b and the side end portion 4c are formed by the drooping surface Fv. Therefore, when the rear end portion 4b and the side end portion 4c of the top plate elevating desk 1 are arranged to abut against the wall surface or other fixtures, the rear end portion 4b or the side end portion 4c of the top plate 4 and the wall surface It is difficult for gaps and recesses to occur between other fixtures. As a result, it is possible to prevent articles from falling from the top 4.

(Other embodiments)
The present invention is not limited to the above-described embodiment described with reference to the drawings, and various modifications can be considered within the technical scope thereof.
For example, the upper slant surface F2 is formed as the upper inclined portion of the front end portion 4a of the top plate 4. However, if the upper slant surface F2 is inclined downward toward the front, the upper inclined portion is not limited to a flat inclined surface but is curved by a curved surface. You may comprise a part. Similarly, the lower inclined portion formed in the front end portion 4a is not limited to the front end lower curved surface F4, and a flat inclined surface may be formed as long as the lower inclined portion is inclined rearward downward.

  Moreover, in the said embodiment, although the upper slant surface F2 was formed only in the front-end part 4a of the top plate 4, it is not restricted to this. Depending on the form of use of the top / bottom desk 1, the top slant surface F2 and the like may be provided on the rear end 4b and the side end 4c of the top 4 in the same manner as described above.

Moreover, as long as the top plate 4 can be moved up and down, the top plate elevating desk 1 may have any other configuration such as the configuration, arrangement, and number of installed legs 2.
The configuration of the lifting mechanism unit 5 may be any other configuration as long as the top plate 4 can be lifted and lowered.
In addition to this, the configuration described in the above embodiment can be selected or changed to another configuration as appropriate without departing from the gist of the present invention.

1 Top plate liftable desk 2 Leg 4 Top plate 4a Front end (end)
4t Top surface (work surface, top surface)
7 Operation part
11 Base member (support material)
12 Surface coating material (coating material)
F1 Upper curved surface F2 Upper slant surface (upper slope)
F3 Front end upper curved surface (front end surface)
F4 Front end lower curved surface (front end surface)
F5 bottom plane

Claims (5)

A top plate having a work surface on the upper surface;
A leg that includes an elevating mechanism unit that supports the top plate so that it can be lifted up and down in a vertical direction from a position where it can be used at least when the user is sitting;
The top plate has an upper inclined portion that is inclined downward toward the front on the upper end of the front side of the top plate facing the user,
The top plate is a desk top and bottom type desk that is integrally formed in a curved surface shape in which a portion from the front end edge of the top surface to the front end surface of the top plate through the upper inclined portion is continuous. The top plate is
An upper curved surface connecting the upper surface and the upper inclined portion;
A front end upper curved surface that constitutes an upper portion of the front end surface and extends downward while curving toward the front from the upper inclined portion;
The top-plate elevating desk according to claim 1, further comprising a front end lower curved surface that forms a lower portion of the front end surface and extends rearward while curving downward from the front upper curved surface.   The top-plate elevating desk according to claim 2, wherein the top plate has a lower flat surface extending rearward from the front end lower curved surface.   The top plate elevating desk according to claim 3, wherein an operation unit for operating the elevating operation of the elevating mechanism unit is provided below the top plate and behind the front end lower curved surface. The top plate is
A steel support material having a shape along the upper surface, the upper inclined portion and the front end surface;
The top-plate elevating desk according to any one of claims 1 to 4, comprising a covering material that covers a surface of the support material.

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