JP2021104141A - Footrest unit and vertically elevated/lowered desk - Google Patents

Abstract

To provide a footrest unit which includes a footrest member on which feet of a user can be placed in a posture of the high sitting position or standing position in order to guarantee the comfort of the user, which secures the foot passage property in the low sitting position and which can retreat the footrest member in order to push and store a chair to a space under a top plate in non-use in a vertically elevated/lowered desk.SOLUTION: In a footrest unit which is attached to a vertically elevated/lowered desk, a footrest member 4 is arranged in a space under a top plate 2, the unit includes a switching mechanism 5 which switches the state of the footrest member from one to the other of the first state and the second state. The first state S1 is the state in which the footrest member has a support face 9 that functions as a footrest supporting the feet of the user at a position overlapped with any portion from the center to the front end in the depth direction of the top plate in the plan view. The second state is the state in which at least a portion of the support face is located on the depth side, upper side or lower side compared to the first state.SELECTED DRAWING: Figure 7

Description

The present invention relates to a footrest unit and a vertical lift desk.

Conventionally, legs with a built-in elevating mechanism are arranged on both the left and right sides to support the top plate, and the legs consist of a base leg that touches the floor and an extendable pedestal that stands on the base leg. There are various types of vertical lift desks that are configured and the height of the top plate attached to the upper end of the pedestal can be adjusted. Here, the vertical elevating desk has a single type (see Patent Document 1) in which one elevating top plate is provided on the base leg, and leg bodies are independently erected on the front and rear parts of the common base leg, and each of them is installed. There is a twin type (see Patent Document 2) in which two top plates are supported back and forth by pedestals.

Such a vertical elevating desk is used by adjusting the top plate to a height suitable for a low sitting position, a high sitting position, and a standing position. In the low sitting position, the height of the top plate is the standard height, and the feet touch the floor while the user is sitting on the chair, so you can freely change the position of the feet just like a normal desk. Can be done. In recent years, it has been said that raising the perspective of human science increases concentration and productivity, and often works in a high sitting or standing position. The high sitting position is a mode in which the height of the top plate is higher than the standard and the seat is used by sitting on a chair with a raised seat surface. However, in this case, the user's feet do not reach the floor surface, so that it is usually used. Use your feet on the steps provided in the chair. However, maintaining this posture for a long time is not comfortable. Also, in the standing position, it is not comfortable to maintain a posture of standing on the floor with both feet for a long time, and it is sometimes tempting to raise one foot.

JP-A-2017-079889 Japanese Unexamined Patent Publication No. 2018-068943

However, the conventional vertical lift desk does not give special consideration to the comfort of the user in a high sitting position or a standing position. On the other hand, in the low sitting position, it is necessary to ensure the ability to slip out in the space under the top plate.

Therefore, an object of the present invention is to solve the above-mentioned problems.

The present invention constitutes the footrest unit and the vertical lift desk shown below.

(1)
A footrest unit that is attached to a vertical lift desk that has a lift mechanism that raises and lowers the height of the top plate.
A footrest member is placed in the space under the top plate,
A switching mechanism for switching the state of the footrest member from one of the first state and the second state to the other is provided.
The first state functions as a footrest that supports the user's foot at a position where the footrest member overlaps any part between the center and the front end in the depth direction of the top plate in a plan view. It is in a state of having a support surface to be
The second state is a state in which at least a part of the support surface is located behind, above, or below the first state.
Footrest unit.

(2)
The footrest unit according to (1), wherein the switching mechanism includes a shaft that rotates the support surface and a bearing that rotatably receives the shaft.

(3)
The switching mechanism includes a guide portion that guides the vertical and / or horizontal movement of the shaft.
The footrest unit according to (1) or (2).

(4)
The footrest unit according to any one of (1) to (3), wherein the switching mechanism includes a slide mechanism for sliding the support surface.

(5)
The footrest unit according to any one of (1) to (4), wherein the switching mechanism includes a folding mechanism for folding the support surface.

(6)
The footrest unit according to (5), wherein the switching mechanism includes an interlocking mechanism that moves the support surface in conjunction with raising and lowering the top plate to switch the state of the footrest member.

(7)
The footrest unit according to any one of (1) to (5), wherein the switching mechanism is arranged on a base member located between a pedestal supporting the top plate and an installation surface.

(8)
Top plate and
The elevating mechanism that elevates and elevates the top plate,
The footrest unit according to any one of (1) to (7) and the footrest unit.
Up and down desk equipped with.

The switching mechanism is a principle diagram showing an embodiment of a flip-up method, in which (a) shows a low sitting position, (b) shows a high sitting position, and (c) shows a standing position. The switching mechanism is a principle diagram showing an embodiment of a folding system, in which (a) shows a low sitting position, (b) shows a high sitting position, and (c) shows a standing position. The switching mechanism is a principle diagram showing an embodiment of a reverse flip-up method, in which (a) shows a low sitting position, (b) shows a high sitting position, and (c) shows a standing position. It is a principle diagram which shows the embodiment of the reverse flip-up and slide type of the switching mechanism, (a) shows the low sitting position, (b) shows the high sitting position, and (c) shows the standing position. It is a perspective view of the aspect of the low sitting position which shows the embodiment which incorporated the foot rest unit of the flip-up type by the switching mechanism into the single type vertical elevating desk. It is also a perspective view shown in a partial cross section. It is a perspective view of the aspect of the high sitting position which shows the embodiment which incorporated the foot rest unit of the flip-up type by the switching mechanism into the single type vertical elevating desk. It is also a perspective view shown in a partial cross section. It is a vertical sectional side view which shows the modification of the vertical elevating desk of this invention. A deformation example 1 of a type in which the switching mechanism is a reverse flip-up method and the movement of the footrest member is linked to the raising and lowering of the top plate is shown. Is. Similarly, a modified example 1 of a type in which the switching mechanism is a reverse flip-up method and the movement of the footrest member is linked to the raising and lowering of the top plate is shown. It is a figure. A modified example 2 of a type in which the switching mechanism is a reverse flip-up method and the movement of the footrest member is linked to the raising and lowering of the top plate is shown. Is. Similarly, a modified example 2 of a type in which the switching mechanism is a reverse flip-up method and the movement of the footrest member is linked to the raising and lowering of the top plate is shown. It is a figure. A modified example 3 of a type in which the switching mechanism is a reverse flip-up method and the movement of the footrest member is linked to the raising and lowering of the top plate is shown. Is. Similarly, a modified example 3 of a type in which the switching mechanism is a reverse flip-up method and the movement of the footrest member is linked to the raising and lowering of the top plate is shown. It is a figure. It is a perspective view which shows the embodiment which incorporated the foot rest unit of the flip-up type by the switching mechanism into the twin type vertical lift desk. It is a front view of an example of the single type up-and-down elevating desk having the footrest unit of this invention. It is also a rear view. It is also a left side view. It is also a plan view. It is also a bottom view. It is also a perspective view.

Next, the present invention will be described in more detail based on the embodiments shown in the accompanying drawings. 1 to 4 show basic operations in a vertical lift desk incorporating a footrest unit according to the present invention, in which reference numeral 1 is a leg body, 2 is a top plate, 3 is a curtain plate, and 4 is a footrest member. 5 indicates a switching mechanism, respectively. In each of FIGS. 1 to 4, (a) shows a low sitting position, (b) shows a high sitting position, and (c) shows a standing position. In this specification, "front", "rear", "left", "right", and "back" are based on the position of the user.

The vertical elevating desk according to the present invention is arranged on both the left and right sides, the top plate 2 is supported by the legs 1 and 1 having a built-in elevating mechanism, and the curtain plate 3 is fixed to the rear end of the top plate 2. The height of the top plate 2 can be adjusted to a height suitable for a low sitting position, a high sitting position, and a standing position by an elevating mechanism. In the present invention, the curtain plate 3 is not essential, and the structure of the elevating mechanism is also arbitrary. Further, there are two types of vertical lift desks: a single type with one top plate 2 and a twin type in which two top plates 2 and 2 are arranged in the front-rear direction and their heights can be adjusted by independent lifting mechanisms. This embodiment mainly describes a single type vertical lift desk.

Here, the low sitting position is used by sitting on a chair 6 in which the height of the top plate 2 is the standard height H and the seat surface 7 is the standard height, as shown in FIG. 1 (a). It is a mode suitable for. Here, the standard height H is not particularly limited and is a value appropriately selected depending on the situation, but is set to, for example, 72 cm. In this state, the lower end of the curtain plate 3 is located near the floor surface F so that the space under the top plate 2 cannot be seen from the facing direction. As shown in FIG. 1 (b), the high sitting position means that the height of the top plate 2 is between the low sitting position and the standing position, and when the chair 6 with the seat surface 7 raised is used. , The height of the user's line of sight is close to the standing position. It is said that raising the line of sight increases concentration and improves productivity. In this high sitting mode, the foot is conventionally placed on the step 8 provided on the chair 6. As shown in FIG. 1 (c), the standing position is a mode in which the height of the top plate 2 is higher than that in the high sitting position, and is suitable for the user to stand and use without using the chair 6. That is.

In the footrest unit of the present invention, the footrest member 4 is arranged in the space under the top plate 2, and the state of the footrest member 4 is switched from one of the first state S1 and the second state S2 to the other. The first state S1 includes the mechanism 5, and the first state S1 is a position where the footrest member 4 is superposed on any part between the center and the front end of the top plate 2 in the depth direction in a plan view. A state having a support surface 9 that functions as a footrest for supporting the foot (see FIGS. 1B and 1C), and in the second state S2, at least a part of the support surface 9 is the first. State It is a state located behind, above, or below S1 (see FIG. 1 (a)). The conventional vertical lift desk does not give special consideration to the comfort of the user in the high sitting or standing posture, but when the height of the top plate 2 is in the high sitting or standing position, the legs By setting the placement member 4 in the first state S1, the user's feet can be placed on the support surface 9 of the foot placement member 4, and the user can work comfortably.

On the other hand, in the low sitting position, it is necessary to ensure the ability to slip out in the space under the top plate. In addition, when an unused chair is pushed under the top plate and stored, there must be no obstacle in the space under the top plate that interferes with the chair. Here, in the footrest unit of the present invention, in the second state S2, the footrest member 4 is in the retracted position, so that the user's foot can be easily pulled out and the unused chair is placed under the top plate 2. It is also possible to push it into and store it. That is, when the height of the top plate 2 is in the low sitting position, the footrest member 4 is retracted by setting the footrest member 4 in the second state S2, so that the foot resting property in the low sitting position is ensured. , When the chair is pushed under the top plate and stored when not in use, it is possible to prevent the footrest member from getting in the way.

In the present embodiment, the first state S1 is a used state in which the support surface 9 of the footrest member 4 faces substantially horizontally, and in the second state S2, the support surface 9 of the footrest member 4 is substantially vertical. It is in a suitable stored state, but is not limited to the one shown in the figure. The term "substantially horizontal" as used herein means that the support surface 9 is in a state where the angle with respect to the horizontal line is within 30 degrees, including the case where the support surface 9 is in a completely horizontal state. The term "substantially vertical" as used herein means that the support surface 9 is in a state where the angle with respect to the vertical line is within 30 degrees, including the case where the support surface 9 is completely parallel to the vertical direction.

In the low sitting mode of FIG. 1A, the footrest member 4 is in the second state S2, the height of the top plate 2 is the standard height H, and the foot of the user sitting on the chair 6 Is on the floor F. In the high sitting position of FIG. 1B, the footrest member 4 is in the first state S1, and the height from the support surface 9 of the footrest member 4 to the upper surface of the top plate 2 is H. Is set to. In this aspect, the feet of the user sitting on the chair 6 with the seat surface 7 raised can be placed on the support surface 9 of the footrest member 4 in the same manner as on the floor surface F in the low sitting position. It will be possible. In the standing mode of FIG. 1 (c), the footrest member 4 is in the first state S1, and one foot of the user in the standing state can be placed on the support surface 9 of the footrest member 4. .. The basic configuration has been described with reference to FIG. 1, but the above is also common to FIGS. 2 to 4.

The basic structure of the vertical lift desk according to this embodiment will be described below. The leg body 1 is composed of a stretchable pedestal 11 erected on a base member 10 that is in contact with the floor surface F. The pedestal 11 has a telescopic link structure in which a fixed leg 12 fixed to the base member 10 and a movable leg 13 are linked to the fixed leg 12 so as to be vertically movable. The top plate 2 is supported on the upper end of the movable leg 13 of the pedestal 11. The pedestal 11 has an elevating mechanism built in and is unitized. For example, the elevating mechanism includes a feed screw mechanism arranged inside the pedestal 11, a drive motor such as a servomotor or a stepping motor capable of controlling the rotation speed for driving the feed screw mechanism, and a control device separately provided.

To give a more specific example of the switching mechanism 5,
(A) A switching mechanism including a shaft that rotates the support surface 9 and a bearing that rotatably receives the shaft.
(B) A switching mechanism including a guide portion that guides the vertical and / or horizontal movement of the shaft.
(C) A switching mechanism including a slide mechanism for sliding the support surface 9.
(D) A switching mechanism including a folding mechanism for folding the support surface 9.
(E) A switching mechanism including an interlocking mechanism that moves the support surface 9 in conjunction with the raising and lowering of the top plate 2 to switch the state of the footrest member 4. (F) Installed with a pedestal 11 that supports the top plate 2. A switching mechanism arranged on the base member 10 located between the surface (floor surface F) and the surface (floor surface F).
And so on.

Next, a plurality of embodiments in which the switching mechanism 5 of the footrest member 4 is different will be described with reference to FIGS. 1 to 4. FIG. 1 shows an embodiment of a flip-up method in which the footrest member 4 is a flip-up method, and the switching mechanism 5 is the case of the above-mentioned mechanism (A). In the present embodiment, the rear end portion of the footrest member 4 in the first state S1 of FIG. 1B is rotatably supported by a shaft (not shown) and a bearing that rotatably receives the shaft. (Shaft branch 14). In order to maintain the first state S1, for example, support portions having lower surfaces on both sides of the footrest member 4 provided on the base member 10 or the fixed legs 12 of the pedestal 11 (not shown in FIG. 1, for example, the figure described later). Place it on (see "Support 20" and the like in 5). Here, the support portion may be provided integrally with the base member 10 or the fixed leg 12 of the pedestal 11, or may be provided by attaching another member. Similarly, the shaft support portion 14 formed by the shaft and the bearing is also provided on the base member 10 or the fixed leg 12 of the pedestal 11. Further, it is preferable that the footrest member 4 in the second state S2 of FIG. 1A is appropriately provided with a engaging means that can be disengaged and supported at the fixed portion by a magnet catch or the like to maintain that state. It is also possible to rotate the footrest member 4 beyond the vertical line, that is, to hold the footrest member 4 so that it does not fall forward under its own weight at a rotation angle exceeding 90 degrees.

FIG. 2 shows an embodiment in which the footrest member 4 is a folding system, and the switching mechanism 5 is the case of the above-mentioned (D) mechanism, but the (A) mechanism and the (B) mechanism are also used together. The footrest member 4 has a structure in which two plate members 4A and 4B are arranged and pivotally attached to the front and rear, and in the first state S1 of FIG. 2B, the rear end of the plate member 4A located rearward. Similarly to the above, the shaft support portion 14 supports the base member 10 or the fixed portion of the fixed leg 12 of the pedestal 11, and sliders 15 provided on both sides of the front end portion of the plate member 4B located in the front are fixed. The movement in the horizontal direction is guided along a guide portion provided in the portion (not shown in FIG. 2, for example, see “guide portion 24” in FIG. 10 described later). The slider 15 can be replaced with a roller or the like. Here, similarly to the above, in order to maintain the first state S1, the lower surfaces of both sides of the footrest member 4 are supported by a support portion (not shown in FIG. 2, for example, see “support portion 20” in FIG. 5 described later). ) Is preferable. Further, in the second state S2 of FIG. 2A, it is preferable to provide an engaging means for maintaining the folded state of the footrest member 4.

FIG. 3 shows an embodiment of the reverse flip-up method in which the footrest member 4 is the above-mentioned mechanism (B). In the present embodiment, the rear end portion of the footrest member 4 in the first state S1 of FIG. 3B is a guide portion in the vertical direction (not shown in FIG. 3, for example, the “guide portion 25” of FIG. 10 described later. , Etc.), and the front end portion of the footrest member 4 is a guide portion in the horizontal direction (not shown in FIG. 3, for example, see “guide portion 24” in FIG. 10 described later). Is guided backwards to the second state S2 in FIG. 3A. Here, the above-mentioned vertical guide portion and the horizontal guide portion are provided in the fixed portion of the base member 10 or the fixed leg 12 of the pedestal 11, but may be integrally provided in the fixed portion. Alternatively, another member may be attached to the fixed portion. In the first state S1, rear sliders 16 guided by vertical guides are provided on both sides of the rear end of the footrest member 4, and front sliders 17 guided by horizontal guides are provided on both sides of the front end. The first state S1 is maintained by both sliders 16 and 17, but a support portion may be separately provided in the fixed portion. The configuration for maintaining the second state S2 is the same as described above.

FIG. 4 shows an embodiment of the reverse flip-up and slide method, in which the switching mechanism is a combination of the above-mentioned (B) mechanism and (C) mechanism. In this embodiment, the footrest member 4 in the first state S1 of FIG. 4B can be slid forward while maintaining the state, and as shown in FIG. 4C, the footrest member 4 is in a standing posture. The configuration makes it easy to put the user's feet on it. In this case, the guide stroke of the guide portion in the horizontal direction (not shown in FIG. 4, see, for example, "guide portion 24" in FIG. 10 described later) is lengthened, and the guide stroke is made forward of the embodiment shown in FIG. The structure is such that the footrest member 4 can be guided by a slide. In this case, the vertical guide portion (not shown in FIG. 4, see, for example, "guide portion 25" in FIG. 10 described later) and the horizontal guide portion are continuous, and the rear slider 16 of the footrest member 4 is connected. However, it moves from the vertical guide part to the horizontal guide part. Since other configurations are the same as those of the embodiment shown in FIG. 3, the same configurations are designated by the same reference numerals and the description thereof will be omitted. As a modification of the present embodiment, the footrest member 4 may simply slide and move in the front-rear direction. That is, the footrest member 4 may be located at the front portion of the horizontal guide portion in the first state S1 and at the rear portion of the horizontal guide portion in the second state S2.

Next, an embodiment of the flip-up method shown in FIG. 1 will be described in more detail with reference to FIGS. 5 to 8. 5 and 6 show the aspect of the second state S2, and FIGS. 7 and 8 show the aspect of the first state S1. The base member 10 of the leg body 1 of the present embodiment has a structure in which a rising portion 19 extending upward in the vertical direction is provided at the rear end of the main body portion 18 having a square-shaped side view. Here, the main body portion 18 and the rising portion 19 may be integrated or separate. In the present embodiment, the shaft support portion 14 of the footrest member 4 is provided on the rear upper portion of the main body portion 18, and the footrest member 4 is supported so as to be vertically rotatable about the horizontal direction. Further, a support portion 20 for supporting the lower surfaces of both end portions of the footrest member 4 in the first state S1 is projected from the inner upper portion of the main body portion 18, and a second support portion 20 is projected from the inner rear portion of the rising portion 19. A stop portion 21 for hitting the back surfaces (support surface 9) of both ends of the footrest member 4 in the state S2 is provided so as to project. Instead of providing the retaining portion 21, it is also preferable to provide an engaging means such as a ball catch between the inner surface of the rising portion 19 and the outer surface of the footrest member 4. Of course. The fastening portion 21 may be used in combination with an engaging means such as a magnet catch or a ball catch.

The pedestal 1 is erected at the center of the front and rear of the main body 18 of the base member 10, but due to the dimensional relationship of the unitized pedestal 1, as shown in FIG. 9, the fixed leg 12 of the pedestal 1 is erected. May be arranged and erected so as to penetrate the main body 18 of the base member 10. That is, the structure may be such that the fixing leg 12 of the pedestal 1 is passed through the upper rod 22 of the main body portion 18 and fixed to the upper surface of the lower rod 23 of the main body portion 18. A tubular portion that penetrates the upper rod 22 of the main body portion 18 and is fixed to the upper surface of the lower rod 23 is provided, and the fixed leg 12 of the pedestal 1 is fitted into the tubular portion, and the fixed leg 12 is fitted. The lower end of the rod may be screwed to the lower rod 23 from below. In this case, the cross-sectional shape of the tubular portion may be circular or quadrangular depending on the cross-sectional shape of the pedestal 1 to be used. Further, the support portion 20 is formed so as to extend horizontally along the inner surface of the upper rod 22, and the retaining portion 21 is also formed so as to extend vertically along the inner surface of the rising portion 19.

It is also preferable that the switching mechanism 5 switches the footrest member 4 between the first state S1 and the second state S2 in conjunction with the ascending / descending motion of the top plate 2. 10 to 15 show an embodiment in which a reverse flip-up type interlocking type switching mechanism 5 is adopted. Examples of the interlocking type switching mechanism 5 include the gear interlocking mechanism shown in FIGS. 10 and 11, the intermediate panel intervening interlocking mechanism shown in FIGS. 12 and 13, and the pulley interlocking mechanism shown in FIGS. 14 and 15.

First, a configuration common to each interlocking mechanism will be described. A groove-shaped horizontal guide portion 24 is provided along the upper edge of the support portion 20 on the inner surface side of the main body portion 18 of the base member 10, and a groove-shaped vertical guide portion is provided along the inner surface of the rising portion 19. A guide portion 25 is provided. Here, when the stop portion 21 is provided on the rising portion 19, the guide portion 25 is provided along the front edge of the stop portion 21. The guide portion 24 and the guide portion 25 are continuous at the corner portion 26.

First, the gear interlocking mechanism will be described with reference to FIGS. 10 and 11. The footrest member 4 has a shutter structure in which a plurality of narrow plate members 4C, ... Are rotatably connected, and both ends thereof are engaged with the guide portions 24 and 25 to be along the guide portions 24 and 25. It is made movable. Then, a gear 27 rotatable on a horizontal axis is attached to the inner surface of the lower portion of the rising portion 19 of the base member 10, a rack 28 that meshes with the gear 27 is provided in the lower portion of the front surface of the curtain plate 3, and a shutter is provided. A rack 29 that meshes with the footrest member 4 is provided on the back surface of the footrest member 4 of the structure.

Due to the upward displacement of the top plate 2 and the curtain plate 3, the gear 27 meshed with the rack 28 rotates counterclockwise, pushes down the rack 29 meshed with the gear 27, and the driving force thereof causes the footrest. The member 4 moves from the vertical guide portion 25 to the horizontal guide portion 24, and switches from the second state S2 shown in FIG. 10 to the first state S1 shown in FIG. On the contrary, due to the downward displacement of the top plate 2 and the curtain plate 3, the gear 27 meshed with the rack 28 rotates clockwise, pushes up the rack 29 meshed with the gear 27, and the driving force thereof pushes up the rack 29. The footrest member 4 moves from the horizontal guide portion 24 to the vertical guide portion 25, and switches from the first state S1 shown in FIG. 11 to the second state S2 shown in FIG. During this series of operations, the gear 27 is constantly meshed with the rack 29.

Here, as shown in FIG. 3, when the footrest member 4 is composed of one plate member, the rear slider 16 is guided by the vertical guide portion 25, and the front slider 17 is guided in the horizontal direction. When guided by the portion 24, the footrest member 4 separates from the gear 27 provided in the vicinity of the corner portion 26 in a state intermediate between the first state S1 and the second state S2. The rack 29 provided on the back surface of the footrest member 4 may be engaged with the gears that can be changed in a plurality of positions. The number of plate members 4C constituting the footrest member 4 can be changed as appropriate, and if smooth turning is possible depending on the number of gears, the structure of the guide portion 24/25, etc., It may be singular.

Next, the intermediate panel intervention interlocking mechanism will be described with reference to FIGS. 12 and 13. The intermediate panel 30 arranged on the front side of the curtain plate 3 is interlocked so as to perform an operation opposite to the vertical raising / lowering operation of the curtain plate 3. The footrest member 4 is composed of a single plate member, and the rear slider 16 is guided by a vertical guide portion 25 and the front slider 17 is guided by a horizontal guide portion 24 as in FIG. There is. Then, at the rear end of the footrest member 4, at the position of the rear slider 16, the arm 31 provided on the front surface of the intermediate panel 30 is pivotally attached to the arm 31 on a horizontal axis and interlocked. In the second state S2 shown in FIG. 12, the upper end of the intermediate panel 30 rises close to the top plate 2, and in the first state S1 shown in FIG. 13, the lower end of the intermediate panel 30 is the floor surface F. It is descending to near.

Due to the upward displacement of the top plate 2 and the curtain plate 3, the intermediate panel 30 is lowered, the footrest member 4 pivotally attached to the arm 31 is pushed down, and the driving force thereof causes the rear slider 16 to move in the vertical direction. The front slider 17 moves downward along the guide portion 25, and the front slider 17 moves forward along the guide portion 24 in the horizontal direction, from the second state S2 shown in FIG. 12 to the first state S1 shown in FIG. Switch to. On the contrary, the intermediate panel 30 rises due to the downward displacement of the top plate 2 and the curtain plate 3, pulls up the footrest member 4 pivotally attached to the arm 31, and the rear slider 16 is driven by the driving force thereof. Moves upward along the vertical guide portion 25, and the front slider 17 moves rearward along the horizontal guide portion 24, as shown in FIG. 12 from the first state S1 shown in FIG. It switches to the second state S2. The footrest member 4 may be composed of a plurality of plate members so as to be slightly deformable in order to enable smooth turning according to the structure of the guide portion 24/25 and the like. Further, instead of the arm 31, a link mechanism may be appropriately arranged.

Finally, the pulley interlocking mechanism will be described with reference to FIGS. 14 and 15. This modified example also includes a footrest member 4 and guide portions 24, 25 similar to the modified examples shown in FIGS. 12 and 13. At the upper rear end of the main body 18 of the base member 10, the pulley 32 is attached to the outer position of the corner 26, and the pulley is slightly forward of the guide 24 on the inner surface of the upper rod 22 of the main body 18. 33 is attached, and a pulley 34 is attached slightly above the guide portion 25 on the inner surface of the rising portion 19. Then, in the first state S1 of FIG. 15, the wire 35 having one end fixed to the rear end of the footrest member 4 is wound around the pulley 34 above, and then the other end is fixed to the lower part of the curtain plate 3. At the same time, the wire 36 having one end fixed to the front end of the footrest member 4 is wound around the front pulley 33, and then the other end is fixed to the lower part of the curtain plate 3. The position where the other ends of the wires 35 and 36 are fixed to the curtain plate 3 may be the same position or different positions above and below.

The upward displacement of the top plate 2 and the curtain plate 3 pulls the wire 35, and the front slider 17 of the footrest member 4 moves forward along the horizontal guide portion 24, so that the wire 35 Is loosened, the rear slider 16 moves downward along the guide portion 25 in the vertical direction, and switches from the second state S2 shown in FIG. 14 to the first state S1 shown in FIG. On the contrary, the wire 36 is pulled by the downward displacement of the top plate 2 and the curtain plate 3, and the rear slider 16 of the footrest member 4 moves upward along the guide portion 25 in the vertical direction. The wire 36 is loosened, the front slider 17 moves rearward along the horizontal guide portion 24, and the first state S1 shown in FIG. 15 is switched to the second state S2 shown in FIG. ..

As shown in FIG. 16, the twin-type vertical lift desk is a pair of legs 1 and 1 arranged on both the left and right sides, and the heights of the two top plates 2 and 2 arranged in the front and rear can be adjusted independently. It is a supported structure. Then, in the leg body 1, the lower portions of the fixed legs 12 of the leg bodies 1 and 1 are fixed to the base member 10 arranged on the floor surface and the front and rear ends of the base member 10 in an upright state, respectively, and the movable leg The top plate 2 is supported at the upper end of 13. The base member 10 is a side view square-shaped member extending in the front-rear direction, is arranged on both the left and right sides, and a beam 37 is erected between the central portions of both base members 10 and 10, and is placed on the upper surface of the beam 37. The panel plate 38 is supported in an upright position. The top plate 2 moves up and down without being interfered with by the panel plate 38, and its height can be adjusted.

A footrest member 4 is attached to the space below each top plate 2 by a flip-up mechanism ((A) described above). Specifically, the footrest member 4 has a bearing 39 provided on the base member 10 at a position close to the panel plate 38, and an end portion of the footrest member 4 (rear end portion in the first state S1). It has a structure in which shafts 40 projecting on both sides are rotatably supported. In the first state S1, as shown in the figure, the lower surfaces of both side portions of the footrest member 4 are in contact with the upper surface of the base member 10, or are in contact with the support member projecting inside the footrest member 4. Maintain that state. Further, in the second state S2 shown by the imaginary line, the footrest member 4 is raised along the panel plate and engaged with the panel plate 38 by an appropriate means. Since other configurations are the same as those in FIGS. 5 to 8, the same configurations are designated by the same reference numerals and the description thereof will be omitted.

In the present invention, the footrest unit includes the footrest member 4 and its support structure, and can be retrofitted to the fixed leg 12 or the base member 10 of the leg body 1 of the existing vertical elevating desk. be. The minimum building blocks of the footrest unit are the footrest member 4, the shaft support member (shaft support portion 14) and the support member (support portion 20), and the footrest member 4 and the guide members (guide portions 24, 25). However, the base member 10 including the shaft support portion 14 and the support portion 20, or the base member 10 including the guide portions 24 and 25 may be included in the unit. It is also possible to include the curtain plate 3 in the footrest unit.

The following modifications can be applied to each of the above embodiments. In addition, each modification may be applied in combination as appropriate as long as there is no contradiction.

The dimensions of the support surface 9 of the footrest member 4 in the depth direction can be changed as appropriate. For example, the support surface 9 may be long enough to overlap the front end of the top plate 2 in a plan view in the first state S1.

Further, the footrest member 4 does not necessarily have to be plate-shaped. For example, the footrest member 4 may be configured as a rod-shaped or columnar plate or bar extending in the left-right direction as long as it has a support surface 9.

The switching mechanism 5 may be configured such that the support surface 9 of the footrest member 4 is lowered below the first state S1 in the second state S2. For example, by arranging a link, an arm, or the like as the switching mechanism 5 on the base member 10, the support surface 9 is lowered to the extent that the bottom surface portion of the footrest member 4 abuts on the installation surface in the second state S2. May be good.

Further, for example, the footrest member 4 may be configured by connecting a plurality of members so that the support surface 9 can be divided into front and rear and / or left and right in the second state S2.

Further, for example, the support surface 9 may be configured to be located on one / both of the left and right sides instead of being located on the back side in the second state S2. That is, in the second state S2, the support surface 9 may be located on one / both of the right end and the left end of the vertical elevating desk in a substantially vertical posture.

The main body 18 of the base member 10 does not necessarily have to be configured to have a square shape or an O shape when viewed from the side. For example, the main body 18 may be configured in a panel shape that is not open in the left-right direction in a side view. Further, the main body portion 18 may be configured to have a trapezoidal shape or a hexagonal shape in a side view, may be configured to have an H-shape, or have a U-shape or an E-shape turned in half. It may be configured to exhibit a condition.

The footrest unit may be applied to an existing vertical lift desk that has already been installed. For example, the base member 10 may be attached to the leg 1 of the existing vertical elevating desk, and the curtain plate 3 may be fixed to the top plate 2 to be applied to the existing vertical elevating desk.

The footrest member 4 may further have a support column that supports the support surface 9. In such a case, the support column may be provided so as to be deployable so that the lower end is grounded in the first state S1.

The top plate 2 may be raised and lowered by means other than the pedestal (expandable leg). For example, an elevating mechanism may be built in a tsuit panel or the like surrounding the left and right or the rear end of the elevating desk, and the top plate 2 may be elevated using the elevating mechanism. The movable range of the height of the top plate 2 can be changed as appropriate.

1 Leg body 2 Top plate 3 Curtain plate 4 Footrest member 4A, 4B, 4C Plate member 5 Switching mechanism 6 Chair 7 Seat surface 8 Step 9 Support surface 10 Base member 11 Pedestal 12 Fixed leg 13 Movable leg 14 Shaft branch 15 Slider 16 Rear slider 17 Front slider 18 Main body 19 Standing 20 Support 21 Stopping 22 Upper rod 23 Lower rod 24 Guide 25 Guide 26 Corner 27 Gear 28 Rack 29 Rack 30 Intermediate panel 31 Arm 32 Pulley 33 Pulley 34 Pulley 35 Wire 36 Wire 37 Beam 38 Panel plate 39 Bearing 40 Axis F Floor surface S1 First state S2 Second state

Claims (8)

A footrest unit that is attached to a vertical lift desk that has a lift mechanism that raises and lowers the height of the top plate.
A footrest member is placed in the space under the top plate,
A switching mechanism for switching the state of the footrest member from one of the first state and the second state to the other is provided.
The first state functions as a footrest that supports the user's foot at a position where the footrest member overlaps any part between the center and the front end in the depth direction of the top plate in a plan view. It is in a state of having a support surface to be
The second state is a state in which at least a part of the support surface is located behind, above, or below the first state.
Footrest unit. The footrest unit according to claim 1, wherein the switching mechanism includes a shaft that rotates the support surface and a bearing that rotatably receives the shaft. The switching mechanism includes a guide portion that guides the vertical and / or horizontal movement of the shaft.
The footrest unit according to claim 1 or 2. The footrest unit according to any one of claims 1 to 3, wherein the switching mechanism includes a slide mechanism that slides the support surface. The footrest unit according to any one of claims 1 to 4, wherein the switching mechanism includes a folding mechanism for folding the support surface. The footrest unit according to claim 5, wherein the switching mechanism includes an interlocking mechanism that moves the support surface in conjunction with raising and lowering the top plate to switch the state of the footrest member. The footrest unit according to any one of claims 1 to 5, wherein the switching mechanism is arranged on a base member located between a pedestal supporting the top plate and an installation surface. Top plate and
The elevating mechanism that elevates and elevates the top plate,
The footrest unit according to any one of claims 1 to 7, and the footrest unit.
Up and down desk equipped with.

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