JP6761641B2 - Mobile desk - Google Patents

Description

The present embodiment relates to a mobile desk.

Conventionally, various mobile desks have been proposed in which moving casters are provided on the legs of the desk so that they can be raised and lowered, and when the casters are raised, instead of the casters, an adjuster part that comes into contact with the floor surface to support the desk is provided. (Patent Document 1 etc.).

Here, as a kind of such a moving desk, there is one in which the top plate portion is rotatably provided and the casters are raised and lowered with the rotation of the top plate portion.

That is, when the top plate portion is rotated from a substantially vertical storage position to a horizontal use position, the casters move downward in conjunction with the movement, and when the top plate portion is rotated from the use position to the storage position, A mobile desk having a configuration in which the caster moves upward and the adjuster portion touches the ground has been proposed.

Japanese Unexamined Patent Publication No. 2015-156954

However, in the mobile desk having the above-described configuration, when moving the desk, the top plate must be rotated to the storage position, and the desk cannot be moved with the top plate horizontal. It was.

Therefore, in the use position where the top plate portion is in the horizontal state, it is difficult to finely adjust the position where the desk is installed, and there is a disadvantage that the convenience is inferior.

The present embodiment provides a mobile desk capable of easily fine-tuning the position where a desk is installed when the top plate portion is changed from a storage position in a substantially vertical state to a use position in a horizontal state.

According to one aspect of the present embodiment, a top plate portion rotatably provided at a horizontal use position and a substantially vertical storage position, a support leg for supporting the top plate portion, and the support A caster provided on the lower part of the leg so as to be able to move up and down, a means for raising and lowering the caster, and a moving means provided on the lower part of the support leg in contact with the floor surface in place of the caster when the caster is raised. When the adjuster portion that supports the desk and the top plate portion are in the substantially vertical state, and when the top plate portion is returned from the substantially vertical state to the horizontal state, the caster is lowered by the elevating means. The first state holding means that comes into contact with the floor surface and holds the first state in which the moving desk can be moved, and when the top plate portion is in the horizontal state, the first state is released and the elevating and lowering is performed. A mobile desk is provided that includes a second state holding means for raising the caster by means and holding the moving desk in a second state in which the adjuster portion is in contact with the floor surface and the moving desk cannot be moved.

According to the present embodiment, it is possible to provide a mobile desk capable of easily fine-tuning the position where the desk is installed in the use position where the top plate portion is in the horizontal state.

The perspective view which shows a part of the moving desk which concerns on embodiment. The enlarged view which shows the main part of the mobile desk which concerns on embodiment. The front view which shows the main part of the moving desk which concerns on embodiment. Explanatory drawing which shows the structure and operation of the mobile desk which concerns on embodiment. The operation explanatory view which shows the continuation of the operation of the mobile desk which concerns on embodiment shown in FIG. FIG. 5 is an operation explanatory view showing a continuation of the operation of the mobile desk according to the embodiment shown in FIG. The operation explanatory view which shows the continuation of the operation of the mobile desk which concerns on embodiment shown in FIG. The operation explanatory view which shows the continuation of the operation of the mobile desk which concerns on embodiment shown in FIG. An operation explanatory view showing a continuation of the operation of the mobile desk according to the embodiment shown in FIG. The operation explanatory view which shows the continuation of the operation of the mobile desk which concerns on embodiment shown in FIG.

Next, an embodiment will be described with reference to the drawings. In the description of the drawings below, the same or similar parts are designated by the same or similar reference numerals.

Further, the embodiments shown below exemplify devices and methods for embodying the technical idea, and do not specify the materials, shapes, structures, arrangements, etc. of the component parts to the following. .. Various modifications can be made to this embodiment within the scope of claims.

(Embodiment)
[Structure of mobile desk]
The configuration of the mobile desk 1A according to the present embodiment will be described with reference to FIGS. 1 to 3.

Here, FIG. 1 is a perspective view showing a partial configuration of the mobile desk 1A according to the embodiment, FIG. 2 is an enlarged view showing a main part of the mobile desk 1A, and FIG. 3 is a main part of the mobile desk 1A. It is a front view which shows.

The mobile desk 1A includes a top plate portion 10 rotatably provided at a horizontal use position as shown in FIGS. 1 to 3 and a substantially vertical storage position as shown in FIG. 7 and the like. A pair of left and right support legs 12 that support the top plate portion 10, casters 14 that can be raised and lowered below the support legs 12, raising and lowering means 20 that raise and lower the casters 14, and lower parts of the support legs 12. When the caster 14 is raised, instead of the caster 14, an adjuster portion 16 that comes into contact with the floor surface F and supports the moving desk 1A itself is provided.

The details of the elevating means 20 will be described later.

Further, in the moving desk 1A, when the top plate portion 10 is in a substantially vertical state and when the top plate portion 10 is returned from the substantially vertical state to the horizontal state, the caster 14 is lowered by the elevating means 20 to lower the floor surface. When the first state holding means 100, which is in contact with F and holds the first state in which the moving desk 1A can be moved, and the top plate portion 10 are in the horizontal state, the first state is released, and the caster 14 is released by the elevating means 20. The adjuster portion 16 is in contact with the floor surface to provide a second state holding means 200 for holding the moving desk 1A in a second state in which the moving desk 1A cannot be moved.

Specific examples of the first state holding means 100 and the second state holding means 200 will be described later as a description of the mechanism unit M.

The top plate portion 10 is formed of, for example, melamine resin or the like, and a shelf portion 11 made of a steel pipe or the like is provided below the top plate portion 10.

Further, the support leg 12 is composed of, for example, a metal flat elliptical pipe having a hollow portion or the like.

Although the other end side of the mobile desk 1A is not shown in FIG. 1, the support legs 12 having the same configuration are provided on the other end side as well.

[Overview of lifting means]
An outline of the elevating means 20 (corresponding to a partial configuration of the mechanism portion M described later) will be described with reference to FIGS. 2 to 4.

Here, FIG. 4 is an explanatory diagram showing the configuration and operation of the mobile desk 1A according to the embodiment.

The elevating means 20 has a first lever (FLAP lever) 21 swingably supported by a bracket portion (top plate receiving portion) 150 provided on the side of the top plate portion 10, and the top plate portion 10 has a first lever (FLAP lever) 21. It is provided with a first lever mechanism 300 (corresponding to a partial configuration of the mechanism portion M described later) arranged on the lower side.

Further, the wire W as a driven member, which is extended in the vertical direction in the hollow portion 12a of the support leg 12 and whose upper end side moves up and down in conjunction with the operation of the first lever mechanism 300, is connected to the lower end portion of the wire W. The lower end of the support leg 12 is extended in the front-rear direction so as to be movable in the metal leg seat 13 having the adjuster portion 16 below, and a plurality of casters 14 (in this embodiment) on the lower surface side. , Each leg seat 13 is provided with two casters 14), and the caster base 15 is provided.

Further, the caster base 15 is raised and lowered in conjunction with the operation of the first lever mechanism 300 by engaging with the wire W, and the caster 14 is raised above the same height as the lower surface of the leg seat 13 at the raised position of the caster base 15. At the same time, the caster base driving means 400 for lowering the caster 14 below the lower surface of the leg seat 13 at the lowered position of the caster base 15 is provided.

Specific examples of the caster base drive means 400 will be described later.

[Overview of the 1st lever mechanism, etc.]
An outline of the first lever mechanism 300 (corresponding to a partial configuration of the mechanism portion M described later) will be described with reference to FIGS. 2 to 4.

The first lever mechanism 300 is also used as a rotating mechanism for rotating the top plate portion 10 between a used position in a horizontal state and a storage position in a substantially vertical state.

The driven member is composed of a wire W, and in the first state holding means 100, when the top plate portion 10 is brought into a substantially vertical state in conjunction with the operation of the first lever mechanism 300, and the top plate portion 10 is substantially vertical. When the wire W is returned from the vertical state to the horizontal state, the wire W is pulled upward by being engaged with the gear mechanism G (corresponding to a partial configuration of the mechanism portion M described later) and the gear mechanism G. It includes a cam structure C (corresponding to a partial configuration of the mechanism unit M described later) that maintains the state.

A specific example of the cam structure C will be described later as a description of the mechanism unit M.

Further, the caster base driving means 400 is swingably arranged by a pair of float links 30A and 30B which are swingably arranged in the leg seat 13 and pin members 32 and 34 on one end side of the float links 30A and 30B. It is composed of a parallel link mechanism L including a caster base 15 to be connected.

Further, the lower end side of the wire W is swingably connected to the other end side 31 of one float link 30A.

The other end side 33 of the float link 30B is swingably mounted in the leg seat 13.

Further, the second state holding means 200 (corresponding to a partial configuration of the mechanism portion M described later) has a second lever (SET lever) 22 pivotally supported coaxially with the first lever 21 so as to be swingable. It is composed of a lever mechanism 500.

When the top plate portion 10 is in the horizontal state, the second lever mechanism 400 acts on the cam structure C included in the first state holding means 100 in conjunction with the operation of the second lever 22 to pull the wire W. It is provided with an operating member that releases the state and shifts the wire W to the relaxed state.

[About the configuration example of the mechanism part]
With reference to FIGS. 2 to 4, the elevating means 20, the first state holding means 100, the second state holding means 200, the first lever mechanism 300, the caster base driving means 400, the second lever mechanism 500, and the gear mechanism are referred to. A configuration example of the mechanical unit M constituting the G and the cam structure C will be described.

A pair of mechanical portions M are provided on the left and right sides of the top plate portion 10 so as to operate in conjunction with each other.

The mechanism portion M is rotatably supported by a pair of left and right bracket portions 150 that support the top plate portion 10, a drive unit 250 that is rotatably connected to each bracket portion 150 by a rotation shaft 160, and a drive unit 250. It is composed of a wire arm metal fitting 25, an opening / closing lever member 23, a lock plate 24, and the like.
The rotating shaft 160 is screwed to the bracket portion 150 by a bolt 270.

A cylindrical interlocking pipe 350 for interlocking both mechanical portions M is provided between the pair of left and right mechanical portions M (see FIG. 4).

Further, a through pipe 251 composed of a square pipe is provided between the pair of left and right support legs 12. A beam member 110 that supports the top plate portion 10 is provided between the pair of left and right bracket portions 150 (see FIG. 3).

The drive unit 250 includes a unit body 50 made of a metal plate and a rotary damper 26 mounted on the outer surface of the unit body 50.
Further, a pin member 254 is screwed into the bracket portion 150 to rotatably connect the wire arm metal fitting 25 and the unit main body 250.

A wire arm metal fitting 25 is rotatably supported on the unit body 50 by a pin member 254 and a rotating shaft member 255 that are screwed together. A fan-shaped gear tooth 25a is formed on the lower end side of the wire arm metal fitting 25 so as to engage with the gear 26a provided on the rotating shaft of the rotary damper 26.

As a result, when the caster 14 is raised, the adjuster portion 16 can be slowly lowered by the action of the rotary damper 26, and the impact when touching the floor surface F can be mitigated.

Further, a lock plate 24 that is rotatably supported by a rotating shaft 160 erected on the unit main body 50 is provided between the unit main body 50 and the wire arm metal fitting 25.

Further, as shown in FIGS. 2 and 4, the rotation shaft 450, which is the rotation center of the first lever 21 and the second lever 22, is fixed to the end of the interlocking pipe 350.

The outer end of the rotating shaft 450 is engaged with an engaging hole 23b formed in the upper part of the opening / closing lever member 23.

The shape of the engaging hole 23b is fan-shaped. Further, the cross-sectional shape of the rotating shaft 45 is formed to be substantially flat. As a result, the first lever 21 and the second lever 22 are independently and rotatably supported at predetermined angles.

Further, the rotating shaft 450 is pivotally supported by an operating member 190 that is rotated in conjunction with the operation of the second lever 22.

The unit main body 50 is formed with a guide portion 51 cut out in an arc shape. A bolt 27 is screwed into the bracket portion 150, and the end portion of the bolt 27 is configured to slide along the guide portion 51.

Further, a lock pin 170 is erected on the wire arm metal fitting 25 at a position where it comes into contact with the end surface of the lock plate 24. The tip 170a of the lock pin 170 is connected to the end of the wire W as a driven member.

Then, the end portion of the bolt 27 is in sliding contact with the lock plate 24, and the end portion of the bolt 27 is slid along the guide portion 51 in conjunction with the rotation of the top plate portion 10. The lock plate 24 is designed to rotate.

Further, a cam structure C composed of concave portions 24a, 24c and convex portions 24b is provided on the end surface of the lock plate 24.

Then, by the lock pin 170 and the cam structure C of the lock plate 24, when the top plate portion 10 is in a substantially vertical state and when the top plate portion 10 is returned from the substantially vertical state to the horizontal state, the elevating means is used. The first state holding means 100 is configured in which the caster 14 descends and comes into contact with the floor surface F to hold the moving desk 1A in a movable first state.

Further, although the detailed operation mode will be described later, the engagement state between the recess 24c of the lock plate 24 and the lock pin 170 is released by the operating member 190 that is rotated in conjunction with the operation of the second lever 22. ..

That is, the second lever 22, the operating member 190, and the cam structure C of the lock plate 24 release the first state when the top plate portion 10 is in the horizontal state, and the elevating means 20 raises the caster 14. A second state holding means is configured in which the adjuster portion 16 is in contact with the floor surface to hold the moving desk 1A in an immovable second state.

The specific operation mode will be described later.

Further, a recess 23a is formed on the end surface of the opening / closing lever 23 on the lock plate 24 side. Further, lock pins 180A and 180B that engage with the recess 23a are erected at predetermined positions on the outer surface of the unit body 50.

Then, when the top plate portion 10 is in the horizontal state, the engagement state between the recess 23a and the lock pin 180A is released by the operation of the first lever 21, and the top plate portion 10 is in the substantially vertical state. , The engagement state between the recess 23a and the lock pin 180B is released by the operation of the first lever 21.

The specific operation mode associated with the operation of the first lever 21 will be described later.

Although not shown, winding springs wound around the rotating shaft 450 are provided between the bracket portion 150 and the unit main body 50, and between the unit main body 50 and the operating member 190, respectively. .. The winding spring is provided so as to urge each of the opening / closing handle 21 and the fixed handle 22 downward (toward the floor surface).

[About the operation mode of the mobile desk]
The operation mode of the mobile desk 1A will be described with reference to the operation explanatory views of FIGS. 4 to 10.

(Basic state of mobile desk)
First, the basic state of the mobile desk 1A according to the present embodiment will be described with reference to FIG.

Here, the basic state is a state in which the top plate portion 10 of the mobile desk 1A is in a horizontal state and the adjuster portion 16 is in contact with the floor surface F (that is, a state in which the second state referred to in the present embodiment is held). It shall be said.

In this basic state, the first lever 21 and the second lever 22 are in the lowered state.

Further, the recess 23a of the opening / closing lever member 23 is engaged with the lock pin 180A located on the lower side.

As a result, the top plate portion 10 is locked while holding the used position in the horizontal state.

Further, in the lock plate 24, the convex portion 24a of the cam structure C is engaged with the lock pin 170.

As a result, the wire W connected to the tip 170a of the lock pin 170 is held in a relaxed state.

Therefore, in the caster base driving means 400, the caster base 15 is held in the raised position by the action of the parallel link mechanism L, and the caster 14 is held in a state of being raised above the same height as the lower surface of the leg seat 13.

Further, in this state, the adjuster portion 16 is held in contact with the floor surface F instead of the caster 14.

As described above, in the basic state, the adjuster portion 16 is in contact with the floor surface F, and the moving desk 1A is installed at a desired position in an immovable state.

(Transition to the upright state of the top plate)
Next, the operation of transitioning the top plate portion 10 from the basic state shown in FIG. 4 to the upright state will be described with reference to the operation explanatory views of FIGS. 5 to 7.

First, as shown in FIG. 5, the first lever 21 is manually pulled up in the direction of arrow D10. As a result, the engagement state between the recess 23a of the opening / closing lever member 23 and the lock pin 180A is released, and the top plate portion 10 is made rotatable.

Next, as shown in FIGS. 6 and 7, the top plate portion 10 is manually rotated in the direction of arrow D11.

In conjunction with this operation, the opening / closing lever member 23 is rotated in the direction of arrow D21. Further, the bolt 27 also moves upward along the guide portion 51 and is pressed by the bolt 27, and the lock plate 24 is also pressed by the arrow D22. It is rotated in the direction.

The wire arm metal fitting 25 is also rotated in the direction of arrow D23, and the lock pin 170 is also moved upward.

As a result, the wire W connected to the tip 170a of the lock pin 170 is pulled up in the direction of arrow D12 (upward).

Then, in the caster base driving means 400, the float links 30A and 30B are rotated in the direction of the arrow D13, and the caster base 15 is lowered by the action of the parallel link mechanism L.

As a result, the caster 14 is also lowered in the direction of arrow D14.

Subsequently, as shown in FIG. 7, the top plate portion 10 is further rotated in the direction of arrow D11 to bring the top plate portion 10 into a substantially vertical state (for example, in the configuration example shown in FIG. 7, about 75 degrees with respect to the horizontal plane). ) To stand up.

Further, in conjunction with this operation, the opening / closing lever member 23, the lock plate 24, and the wire arm metal fitting 25 are further rotated in the directions of arrows D21, D22, and D23.

Then, the recess 23a of the opening / closing lever member 23 is engaged with the upper lock pin 180B.

As a result, the top plate portion 10 is held in a substantially vertical accommodation position.

Further, the lock pin 170 gets over the convex portion 24b of the cam structure C provided in the lock plate 24 by the rotation of the wire arm metal fitting 25 in the direction of the arrow D23, and the lock pin 170 is held (locked) by the concave portion 24c.

In this state, in the caster base driving means 400, the float links 30A and 30B are further rotated in the direction of the arrow D13, and the caster base 15 is further lowered by the action of the parallel link mechanism L.

As a result, the caster 14 is further lowered in the direction of arrow D14 to be grounded on the floor surface F, and the adjuster portion 16 is raised in the direction of arrow D15.

As described above, in the state shown in FIG. 7, the top plate portion 10 is held in a substantially vertical accommodating position, and the moving desk 1A itself can be moved to a desired position by the adjuster portion 16 (the present embodiment). The first state in).

The first state is maintained until the engagement state between the lock pin 170 and the recess 24c of the lock plate 24 is released by an operation described later.

(Transition of the top plate to the horizontal state)
Next, the operation of transitioning the top plate portion 10 from the standing state shown in FIG. 7 to the horizontal state will be described with reference to the operation explanatory views of FIGS. 8 and 9.

First, as shown in FIG. 8, the first lever 21 is manually rotated in the direction of arrow D30. As a result, the opening / closing lever member 23 is rotated in the direction of the arrow D31, the engagement state between the recess 23a and the lock pin 180B is released, and the top plate portion 10 can be rotated downward.

Next, as shown in FIG. 9, the top plate portion 10 is manually rotated in the direction of arrow D32.

In conjunction with this operation, the opening / closing lever member 23 is rotated in the direction of arrow D33. Further, the bolt 27 also moves upward along the guide portion 51 and is pressed by the bolt 27, and the lock plate 24 is also pressed by the arrow D22. It is rotated in the direction.

However, since the engaged state between the lock pin 170 and the recess 24c of the lock plate 24 is maintained, the first state in which the moving desk 1A itself can be moved to a desired position by the adjuster portion 16 is held. ..

As a result, the position where the mobile desk 1A is installed can be finely adjusted while the top plate portion 10 is kept horizontal.

Therefore, the convenience can be improved as compared with the conventional desk having a structure in which the top plate portion 10 can be moved only in an upright state.

(Release operation of the first state)
Next, the operation of releasing the above-mentioned first state in the horizontal state of the top plate portion 10 shown in FIG. 9 will be described with reference to the operation explanatory view of FIG.

When it is desired to release the first state after the fine adjustment of the position where the moving desk 1A is installed as described above is completed, the second lever 22 is rotated in the direction of arrow D40 as shown in FIG. ..

In conjunction with this operation, the operating member 190 is rotated in the direction of arrow D41. Then, the operating member 190 engages with the projecting piece of the lock plate 24 to push down the lock plate 24.

As a result, the engagement state between the lock pin 170 and the recess 24c of the lock plate 24 is released, and the wire arm metal fitting 25 is rotated in the direction of arrow D42.

Then, the lock pin 170 on the wire arm metal fitting 25 moves to the lower position, and the wire W connected to the tip of the lock pin 170 moves in the direction of the arrow D50 to shift to the relaxed state.

In conjunction with this operation, in the caster base driving means 400, the float links 30A and 30B are rotated in the direction of the arrow D51, and the caster base 15 is raised by the action of the parallel link mechanism L.

As a result, the caster 14 also rises in the direction of arrow D52, and the ground contact state with the floor surface F is released.

At the same time, the adjuster portion 16 descends in the direction of arrow D53, and transitions to a state where the adjuster portion 16 touches the floor surface F instead of the caster 14.

At this time, since the rotational operation of the wire arm metal fitting 25 is braked by the action of the rotary damper 26, the adjuster portion 16 can be slowly lowered, and the impact when touching the floor surface F is alleviated. Can be done.

Through such an operation, the mobile desk 1A returns to the basic state shown in FIG.

[Other embodiments]
As mentioned above, although described by embodiment, the discourses and drawings that form part of this disclosure are exemplary and should not be understood to be limited. This disclosure will reveal to those skilled in the art various alternative embodiments, examples and operational techniques.

As described above, the present embodiment includes various embodiments not described here.

For example, in the mobile desk 1A according to the present embodiment, the configuration in which the wire W is used as the driven member has been described, but the present invention is not limited to this, and the caster 14 is raised and lowered by a known structure using a rod as the driven member. It may be configured as.

The mobile desk of the present embodiment can be applied to a desk used in a classroom, an office, a conference room, or the like.

1A ... Mobile desk 10 ... Top plate part 11 ... Shelf part 12 ... Support leg 12a ... Hollow part 13 ... Leg seat 14 ... Caster 15 ... Caster base 16 ... Adjuster part 20 ... Lifting means 21 ... 1st lever 22 ... 2nd lever 23 ... Open / close lever member 24 ... Lock plate 25 ... Wire arm metal fittings 26 ... Rotary damper 27, 270 ... Bolts 30A, 30B ... Float link 32, 34 ... Pin member 50 ... Unit body 51 ... Guide part 100 ... First state holding means 150 ... Bracket part 170, 180A, 180B ... Lock pin 190 ... Acting member 200 ... Second state holding means 250 ... Drive unit 300 ... First lever mechanism 350 ... Interlocking pipe 400 ... Castor base driving means 450 ... Rotating shaft 500 ... No. 2 Lever mechanism C ... Cam structure F ... Floor surface G ... Gear mechanism L ... Parallel link mechanism M ... Mechanism part W ... Wire (driven member)

Claims (5)

A top plate that is rotatably provided between a horizontal usage position and a substantially vertical storage position,
Support legs that support the top plate and
A caster provided on the lower part of the support leg so as to be able to move up and down,
Lifting means for raising and lowering the caster,
An adjuster portion provided at the lower part of the support leg and which supports the moving desk in contact with the floor surface in place of the caster when the caster is raised.
When the top plate portion is in the substantially vertical state and when the top plate portion is returned from the substantially vertical state to the horizontal state, the casters are lowered by the elevating means and come into contact with the floor surface. A first state holding means for holding a first state in which the mobile desk can be moved, and
When the top plate portion is in the horizontal state, the first state is released, the caster is raised by the elevating means, the adjuster portion is in contact with the floor surface, and the moving desk cannot be moved. Second state holding means for holding
A mobile desk characterized by being equipped with. The elevating means
A first lever mechanism that has a first lever that is swingably supported by a bracket portion provided on the side of the top plate portion and is arranged below the top plate portion.
A driven member that extends in the vertical direction in the hollow support leg and moves up and down with the upper end side connected to the first lever mechanism.
It is connected to the lower end of the driven member, extends in the front-rear direction of the lower end of the support leg, and is movably provided in a leg seat having the adjuster portion below, and a plurality of the casters on the lower surface side. With the caster base in which
Engage with the driven member, raise and lower the caster base in conjunction with the operation of the first lever mechanism, and raise the caster to the same height as or higher than the lower surface of the leg seat at the raised position of the caster base. The mobile desk according to claim 1, further comprising a caster base driving means for lowering the casters below the lower surface of the pedestal at a lowering position of the caster base. The first lever mechanism is also used as a rotating mechanism for rotating the top plate portion between the used position in the horizontal state and the storage position in the substantially vertical state.
The driven member is composed of wires.
The first state holding means is
In conjunction with the operation of the first lever mechanism, when the top plate portion is brought into the substantially vertical state and when the top plate portion is returned from the substantially vertical state to the horizontal state, the wire is pulled. A gear mechanism that pulls up and
The mobile desk according to claim 2, further comprising a cam structure that is engaged with the gear mechanism to maintain the traction state of the wire. The caster base driving means
It is composed of a parallel link mechanism including a pair of float links swayably arranged in the pedestal and the caster base swayably connected to one end side of each float link.
The mobile desk according to claim 3 , wherein the lower end side of the wire is swingably connected to the other end side of the one float link. The second state holding means is
It is composed of a second lever mechanism having a second lever that is pivotally supported coaxially with the first lever.
The second lever mechanism is
When the top plate portion is in the horizontal state, in conjunction with the operation of the second lever, it acts on the cam structure provided in the first state holding means to release the towed state of the wire, and the wire. The mobile desk according to claim 3 , further comprising an operating member that shifts the device into a relaxed state.

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