JP6649927B2 - Support mechanism - Google Patents

Description

The present disclosure relates to a support mechanism that supports a top plate.

  Conventionally, a pair of front legs and rear legs provided at intervals in the front-rear direction with the aim of supporting the top plate stably with a simple configuration as leg portions for supporting the top plate, the left and right sides of the top plate A desk provided with legs that are provided on both sides is used.

  Further, in such a desk, a desk in which the strength of the front leg and the rear leg is increased by providing a connecting portion for connecting the front leg and the rear leg (see Patent Document 1). If the position of the connecting portion is raised, inconveniences such as the user's feet may be caught, so that the connecting portion is desirably disposed at a low position in order to use the desk comfortably.

  Conventionally, there is a desk provided with casters on the legs of the desk (see Patent Document 2).

JP 2012-100936 A Japanese Utility Model Publication No. 05-53526

  Also in the desk of Patent Document 1 described above, the mobility of the desk is improved by providing the casters. However, when the caster is to be arranged at the lower end of the front leg or the rear leg in the desk of Patent Literature 1, it is necessary to move the connecting portion upward to prevent the connecting portion from coming into contact with the caster. As a result, there is a case where the connection portion is not preferable in use due to the high position as described above.

An object of the present disclosure is to propose a support mechanism that can increase mobility while suppressing impairment of comfort.

One aspect of the present disclosure made in order to solve the above-described problem is a support mechanism that supports a top plate, in which upper and lower legs extend at least vertically, and a first portion that extends at least forward and backward along a floor surface. , A front and rear leg including a second portion connecting the upper and lower legs and the first portion, wherein a caster is provided below the upper and lower legs, wherein the second portion is the first portion. The caster extends obliquely upward from a front end of the caster, is connected to the upper and lower legs, and passes outside a region where the caster can exist.
Another aspect of the present disclosure has been made to solve the problems described above, a top plate, a desk comprising a pair of legs for supporting the top plate, and has the following characteristics.
Each of the left and right legs includes a pair of legs arranged at an interval in the front and rear, and a connecting portion that connects the pair of legs, and at least one of the pair of legs. A caster is provided at the lower end.

  The connecting portion has a first portion and a second portion. The first portion extends along the floor from the other leg different from the one leg described above toward the one leg side. The second portion passes outside the existence area where the above-mentioned caster can exist, and connects one leg to the extended tip of the first portion.

  In the desk configured as described above, the first portion of the connecting portion that connects the pair of legs arranged at an interval in the front and rear direction extends along the floor surface, and the second portion has an area where casters can exist. , The first portion can be arranged at a low position close to the floor surface, and the connecting portion can be prevented from contacting the casters.

Therefore, in the desk of the present invention, the mobility can be enhanced by the casters while suppressing that the comfort at the time of sitting is impaired due to the arrangement of the connecting portion at a high position.
The above-mentioned existence area means a space where the caster can be located in a normal use state of the desk, for example, when the desk is installed and used or when it is moved using the caster. For example, as the above-mentioned caster, a caster that can turn around a vertical rotation axis can be used, and at this time, the above-mentioned existence area is an area where the caster can move by turning.

  In this case, the second portion may be configured to pass through the outside of the existing region and connect the above-described one leg to the extended distal end of the first portion. With such a desk, the mobility of the desk can be enhanced by using a swivel caster, and even in such a case, a part of the connecting portion is placed on the floor while suppressing the contact between the caster and the connecting portion. The comfort can be enhanced by arranging along.

  The above-described second portion may be configured to extend upward from the extended distal end of the first portion and to be connected to one leg, for example. With such a desk, while the first part is arranged along the floor surface, the second part can extend upward to avoid the caster existing area. Note that the term “above” refers to a direction away from the floor surface, and is not limited to a vertical direction, but includes an obliquely upward direction.

  By the way, the desk of the present invention can store a plurality of desks stacked on top of each other, and in the stored state, the vertical interval between the connecting portions of each of the two desks stacked vertically. It may be configured to be formed. Furthermore, in that case, a second caster may be provided at the lower end of the other leg so as to fit within the above-described vertical interval of the connecting portion.

  With such a desk, mobility can be further improved by providing the second caster at the lower end of the other leg. In addition, when the desks are stacked, the second casters fall within the vertical interval of the connecting portion, so that it is not necessary to increase the stacking pitch, and the desks can be stacked small.

  In the configuration of the present invention, front and rear, left and right, and up and down directions are defined in order to briefly describe the relative positional relationship between the components. These indicate the directions during normal use, but do not limit the mode of use. As an example, the direction from the occupant to the desk may be the front-back direction, but is not limited to that direction.

It is a perspective view showing the desk of an example. It is a figure which shows the desk of an Example, (A) is a front view, (B) is a right view, (C) is a left view, (D) is a rear view, (E) is a plan view and (F) is a bottom view. It is an enlarged view below a leg part, (A) is a right view, (B) is a front view, (C), (D) is a left view. It is the right view which expanded the lower part of the leg part. It is a figure explaining stacking of desks, (A) is a partially omitted and transparent plan view, (B) is BB sectional drawing with respect to the lower desk of FIG.5 (C), FIG. 5C is a sectional view taken along line AA of FIG. FIG. 4 is a plan view partially illustrating the connection of the desks, which is omitted and seen through. It is a figure which shows the modification of a desk, (A) is a front view and (B) is a right view.

An embodiment of the present invention will be described below with reference to the drawings.
[Example]
(1) Overall Configuration As shown in FIGS. 1 and 2A to 2F, the desk 1 of the present embodiment has a top plate 11 and a pair of legs supporting the top plate 11 on each of the left and right sides. It includes a portion 13L, a leg portion 13R, and a curtain plate 15 provided in a front side of the top plate 11 in a hanging manner.

  Note that the desk of this embodiment assumes a seating position of the user, and the rear side of the top plate 11 is the seating side. The left-right direction is a left-right direction based on the user in a state where the user is seated at the desk 1. Therefore, the right side view of FIG. 2B shows the left side of the desk 1, and the left side view of FIG. 2C shows the right side of the desk 1.

The top plate 11 is a plate-like member having a substantially rectangular shape extending in the front-rear direction and the left-right direction, and having rounded corners.
The legs 13L and 13R are formed by bending and welding a rod-shaped metal pipe. The legs 13L and 13R have shapes that are nearly symmetrical in the left-right direction, but some of the shapes are different. Therefore, the leg 13L will be described first, and a part of the leg 13R that is different from the leg 13L will be described.

The leg portion 13L includes a front leg 21L and a rear leg 23L arranged at an interval in the front and rear, and a connecting portion 25L that connects the front leg 21L and the rear leg 23L.
The front leg 21L is formed by welding an upper pillar 27L whose lower end is connected to the connecting part 25L and a lower pillar 29L arranged adjacent to the upper pillar 27L. Both the upper pillar 27L and the lower pillar 29L extend in the vertical direction, and are connected so that the lower pillar 29L is arranged on the right side of the upper pillar 27L.

At the lower end of the front leg 21L (lower pillar 29L), there is provided a free caster 31 that is rotatable around a vertical rotation axis and that can freely change the rotation direction.
At the lower end of the rear leg 23L, a fixed caster 35 that rotates about a rotation shaft fixed in the left-right direction and whose rotation direction is fixed in the front-rear direction is provided.

  The leg 13R includes a front leg 21R, a rear leg 23R, a connecting portion 25R, an upper column 27R, and a lower column 29R. The arrangement and configuration are basically the front leg 21L, the rear leg 23L, and the connecting portion 25L of the leg 13L. , Upper column 27L and lower column 29L. The upper part of the rear leg 23R is inclined forward in comparison with the rear leg 23L. The shape of the connecting portion 25R is slightly different from that of the connecting portion 25L, but the details will be described later.

  An upper leg connecting rod 39 (see FIG. 2D) connecting the upper columns 27L and 27R to each other and a lower leg connecting the upper ends of the lower columns 29L and 29R between the pair of left and right legs 13L and 13R. A connecting rod 41 is provided. The lower leg connecting rod 41 is formed integrally with the lower columns 29L and 29R.

  The upper end of the front leg 21L and the upper end of the front leg 21R are connected by a first horizontal portion 45 (see FIGS. 5A and 5C). The upper end of the rear leg 23L and the upper end of the rear leg 23R are connected by a second horizontal portion 47. The top plate 11 is supported by the first horizontal portion 45 and the second horizontal portion 47.

  As shown in FIGS. 2A to 2F, the front legs 21L and 21R are both provided in a space below the top plate 11, and the rear legs 23L and 23R are both provided in the top plate 11R. Is provided at a position deviated to the outside in the left-right direction from the lower space of.

  The curtain plate 15 is disposed at the front end of the top plate 11 such that the main surface of the curtain plate 15 and the front end of the top plate 11 are substantially aligned. Further, the curtain plate 15 is arranged such that a gap between the curtain plate 15 and the lower surface of the top plate 11 is reduced so that a gap having a height sufficient to insert a finger or the like does not substantially occur between the top plate 11 and the curtain plate 15. I have.

A handle 51 is provided at the upper left and right center of the curtain plate 15. A finger or the like can be hooked on the handle 51 to apply a load to the front side of the desk 1 and carry the desk.
(2) Configuration of Leg Lower End First, a configuration from each connecting portion of the legs 13L and 13R to each front leg will be described with reference to FIGS. 3 (A) to 3 (D).

  As shown in FIGS. 3A and 3B, the connecting portion 25L of the leg 13L includes a first portion 61L extending along the floor from the rear leg 23L toward the front leg 21L, and a first portion 61L of the first portion 61L. It has a second portion 63L that bends from the extended tip and extends forward, upward, and rightward to connect the front leg 21L (the upper pillar 27L) and the first portion 61L.

The second portion 63L passes outside the existence region 65 where the free caster 31 can exist, and connects the front leg 21L and the extended distal end of the first portion 61L. Since the adjustable caster 31 is rotatable around a vertical rotation axis, the existence area 65 where the adjustable caster 31 can be located is an area where the adjustable caster 31 can be located when the adjustable caster 31 is rotated.
The turning rotation axis of the adjustable caster 31 is arranged on the same straight line as the center axis of the front legs 21L (lower column 29L) and the front legs 21R (lower column 29R).

  As shown in FIG. 3C, the connecting portion 25R of the leg 13R also includes a first portion 61R and a second portion 63R, like the connecting portion 25L, and the second portion 63R is located outside the existence region 65. Pass through. However, as shown in FIG. 3D, the second portion 63R is located above the second portion 63L when viewed from the left and right directions. Further, as compared with the second portion 63L, the bending position connected to the first portion 61R is rearward, and the bending position connected to the upper pillar 27R is upward.

Next, the configuration from the connecting portions of the legs 13L and 13R to the rear leg will be described with reference to FIG. Since the shape of this portion is symmetrical, only the leg 13L will be described.
The rear leg 23L extends vertically. The lower end of the rear leg 23L is formed as a bent portion 33 extending forward and downward, and the first portion 61L of the connecting portion 25L extends from a point where the bent portion 33 extends in a direction in which the front leg 21L is located. ing.

  The center 35b of the rotating shaft 35a extending in the left-right direction of the fixed caster 35 is located in a space below the bent portion 33 and in a region 33a above the lower end of the connecting portion 25L (first portion 61L). Are located in

The support portion 37 that supports the rotation shaft 35a of the fixed caster 35 has a first region 37a that contacts the lower surface of the connecting portion 25L and a second region 37b that contacts the lower surface of the bent portion 33. I have. The first region 37a and the second region 37b are formed in a curved shape corresponding to the curved surface of the surface of the metal pipe so that the first region 37a and the second region 37b can be in close contact with the connecting portion 25L and the bent portion 33 formed of the metal pipe. The support portion 37 is fixed to the connecting portion 25L by screwing from below.
Although the first portion 61L and the first portion 61R extend along the floor surface as described above, the upper end of the main portion, that is, the portion located on the upper side among the side surfaces of the metal pipe, is the free caster 31. Are arranged closer to the floor so that their positions are lower than the upper ends of the wheels and the fixed casters 35.
The first portion 61L and the first portion 61R are arranged along the floor surface in a portion located below the top plate when viewed from the side in the left-right direction.

(3) Desk Stacking and Ganging Function Desk 1 can be stacked. FIGS. 5A and 5C show a state in which two desks are stacked. FIG. 5B is a diagram showing a lower part of the top plate 11 of the desk 1. Note that some components are omitted for easy understanding.

  As shown in FIG. 5B, the desk 1 has the rear legs 23 </ b> L and 23 </ b> R arranged outside the top plate 11 in the left-right direction when viewed from above, so that a plurality of the desks 1 are stacked so that the top plates 11 overlap. It is possible to The front legs 21L and 21R are arranged below the top board 11, but since the positions are near the front end of the top board 11, the influence on the width of shifting the top boards 11 of the upper and lower desks 1 when stacking is different. small.

  Note that, in the state of being stacked and stored in this way, as shown in FIG. 5C, a vertical space is formed between the connecting portions 25R of the two desks 1. The fixed casters 35 are configured to fit within this interval, as shown in FIGS.

In addition, the desk 1 can be ganged to the left and right, and can contact the top plate 11. FIG. 6 shows a state where the two desks 1 are ganged. Note that some components are omitted for easy understanding.
As described above, the desk 1 has the rear legs 23L and 23R disposed on the outer side in the left-right direction with respect to the top plate 11 when viewed from the top. Does not contact with

  Looking at the connection between the two desks 1, the left end of the second horizontal portion 47 is bent rearward, and the rear leg 23L extends vertically downward from the left end. On the other hand, the right end of the second horizontal portion 47 is not bent, and the rear leg 23R is inclined backward and extends downward from the right end. As a result, the rear leg 23R of the left desk 1 has a positional relationship such that it passes under the second horizontal portion 47 of the right desk 1, and contact between the legs is avoided.

  Further, as described above, since the second portion 63R is located above the second portion 63L when viewed from the left and right directions, the second portion 63R has a positional relationship of passing over the second portion 63L, and these contact portions Is also avoided.

Thus, the desk 1 of the present embodiment can achieve ganging and stacking simultaneously.
(4) Effects In the desk 1 of the present embodiment, the first portions 61L and 61R extend along the floor surface, so that the comfort of the user when sitting is not impaired. In addition, since the second portions 63L and 63R are bent upward in the vicinity of the adjustable caster 31 and pass outside the existence region 65, it is possible to suppress the connecting portions 25L and 25R from contacting the adjustable caster 31.

  The desk 1 is further improved in mobility by providing fixed casters 35 at the lower ends of the rear legs 23L and 23R, and when the desks 1 are stacked, the fixed casters 35 are moved up and down of the connecting portions 25L and 25R. , The stacking pitch does not need to be widened, and the stacking can be made small.

  In addition, the front leg 21L and the rear leg 23L, and the front leg 21R and the rear leg 23R are an example of a pair of legs in the present invention, the adjustable caster 31 is an example of the caster in the present invention, and the fixed caster 35 is an example of the present invention. 5 is an example of a second caster.

[Modification]
Although the embodiment of the present invention has been described above, the present invention is not limited to the above-described embodiment at all, and it goes without saying that various forms are possible as long as they fall within the technical scope of the present invention.

  For example, in the above-described embodiment, the configuration in which the adjustable casters 31 are disposed on the front legs 21L and 21R has been exemplified. However, the adjustable casters 31 are disposed on the rear legs 23L and 23R, and the connecting portions 25L and 25R are disposed rearward. The movable caster 31 may be configured to pass outside the existing area.

  Further, in the above-described embodiment, the configuration in which the first portions 61L, 61R and the front legs 21L, 21R are connected to each other so that the straight rod-shaped second portions 63L, 63R avoid the existence region 65 is illustrated. The shape may be bent along the outer periphery of the existence region 65.

  Further, in the above embodiment, the legs 13L, 13R are formed by bending or welding a metal pipe, but the material and shape of each part constituting the leg, and the method of connecting each part are not particularly limited. .

  FIGS. 7A and 7B show a desk 1a in which a metal pipe is used as a material of the legs and the connection mode is changed. In the desk 1a, the front legs 21La and 21Ra are constituted by one metal pipe. The second portions 63La and 63Ra are welded to the front legs 21La and 21Ra, and the lower leg connecting rod 41a is also welded to the front legs 21La and 21Ra. Thus, the connection of each part of the leg can be made in various ways.

1, 1a desk, 11 top plate, 13L, 13R leg, 15 curtain plate, 21L, 21R front leg, 23L, 23R rear leg, 25L, 25R connecting part, 27L, 27R upper column, 29L, 29R: Lower pillar, 31: Flexible caster, 33: Bend, 33a: Area, 35: Fixed caster, 35a: Rotating shaft, 35b: Center, 37: Supporting part, 37a: First area, 37b ... 2nd area, 39 ... upper leg connecting rod, 41 ... lower leg connecting rod, 45 ... 1st horizontal part, 47 ... 2nd horizontal part, 51 ... handhold part, 61L, 61R ... 1st part, 63L, 63R ... Second part, 65... Existence area.

Claims (3)

A support mechanism for supporting the top plate,
Upper and lower legs extending at least vertically,
A front and rear leg including a first portion extending at least forward and backward along the floor surface, and a second portion connecting the upper and lower legs and the first portion;
Casters are provided below the upper and lower legs,
The second portion extends obliquely upward from a front end of the first portion, is connected to the upper and lower legs, and passes outside a region where the casters can exist,
A second caster, which is a caster different from the caster, is provided behind the caster,
The support mechanism, wherein the first portion is arranged such that an upper end of a main portion thereof is lower than any of an upper end of the caster and an upper end of the second caster. The support mechanism is configured to be linearly movable in the front-rear direction by the casters and the second casters.
  The support mechanism according to claim 1, wherein: The caster is pivotable about a vertical rotation axis,
The second portion passes outside the region with the region in which the caster can move by turning as the existence region, and connects the upper and lower legs to the extended tip of the first portion. The support mechanism according to claim 1 or 2 , wherein