JP3360160B2 - Moving equipment such as furniture - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to the and connected chairs which is installed in theaters and halls like, a table or the like which is installed in a conference room or the like, is easily movable as required
Seu was so that, on the mobile device of the furniture and the like.

[0002] In particular, the present invention provides a caster which is provided so as to be able to enter and exit below a lower base such as furniture, and projects the caster below a lower base landing on the floor so that the lower base can be moved from the floor. floated and was so easily move the furniture, it relates to a mobile device furniture.

[0003]

BACKGROUND ART theater, hall, a conference room, etc., to allow changes in the layout according to the type of event, connected chairs and mobile table mobile is often installed. The mobile device of mobile furniture, the lower the definitive the legs of furniture, such as a linking chairs and tables, based on the insertion and removal can be casters provided downward, during normal use,
The caster and retract on the lower base, by landing the lower base to the floor, to secure the furniture on the floor,
Also during the movement, by protruding the caster of lower base downward, float the lower base from the floor, which was set to move the furniture, and the like are known (e.g.,
JP-B-56-44422 and JP-B-62-2092.
No. 1).

[0004] Japanese Utility Model Publication No. Sho 56-44422 discloses
The up and down moving member to which the caster is attached is moved up and down by a cam interlocking with the lever, and when moving, the caster is projected downward from the base by lever operation,
The base floats off the floor.

[0005] Japanese Patent Publication No. Sho 62-20921 discloses
When lifting the chair, an arm is fitted with casters and caster is lowered by its own weight, caster and is projected downward from the base, working restraint cam, so as to maintain the lowered state.

[0006]

[Problems to be solved by the invention]
No. 44422 describes the entirety of a connected chair or the like.
Due to the large weight, the cam is shaped as a nearly parallelogram with different distances between the parallel sides.When the lever is operated and the cam turns to switch to a different side, the vertical moving member and the cam Since the corners come into contact with each other, a large force is required for the turning operation of the lever, and the corners of the cam may be worn out over a long period of use, so that reliable switching may not be performed.

[0007] In Japanese Patent Publication No. 62-20921, the connecting chair is heavy and the holding place is low.
There is a problem that it is difficult to lift and the workability is poor because the place where the hand is hung is not stable.

An object of the present invention, by operating the handle with a foot, a caster, is <br/> projecting lower base of the lower that landed on the floor, with an operation of floating the lower base from the floor, small It is an object of the present invention to provide a moving device for furniture or the like which can be easily, safely and reliably performed by force.

[0009]

The present invention employs the following means in order to achieve the above object. (1) A caster provided on a leg of a furniture or the like, which can enter and exit downward, is protruded downward from a ground contact portion of the leg so that the leg can be lifted from the floor and the furniture or the like can be moved. In a moving device for furniture or the like, the legs are
At the lower end thereof, an arm having a box-shaped lower base that faces in the front-rear direction and opens downward, and that faces in the front-rear direction and has a pair of casters provided on the lower surface of both front and rear ends thereof, is attached to the lower base. And a lower end of an upper link pivotally attached to a left-right pin fixed in the leg, and a lower end pivotally attached to an intermediate portion of the arm. A toggle link, which is rotatably connected to an upper part of a lower link fixed to a horizontal rotation shaft, is disposed in the leg portion, and a handle for bending and extending the toggle link in a vertical direction is operated. By
Thereby enabling and out casters below the lower base of the ground portion
And further comprising an upper link and a lower link.
The toggle link has been extended vertically by operating the handle.
Sometimes the upper link and lower link go back and forth beyond top dead center
Pivot to the opposite side, and
By contacting the pad
It shall be the ones that can be maintained.

(2) In the above item (1), the toggle link
The handle to bend up and down vertically.
The lower end of the lower link of the
Set.

(3) In the above item (1) or (2),
A pair of guide rods on the upper surface of the base
At the same time, the front and rear parts of the arm
Penetrate the rod and move the arm up and down into the lower base
It is arranged to be movable.

(4) Any one of the above items (1) to (3)
The grounding part of the lower base can be adjusted
Adjuster.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment in which a moving device for furniture or the like according to the present invention is implemented in a connecting chair having three seats will be described with reference to FIGS. 1 to 3, (1)
Is a connecting chair for three people, and is constituted by connecting three chairs alone (2) in a horizontal line, and below the left and right ends of the connecting chair (1), a hanging part (3) And a lower base (4) fixed to the lowermost end thereof are provided with two legs (5) (5).

Each chair alone (2) has a fixed backrest (6),
It can rise and has been the seat (7), armrests provided on both sides
(8) (There is only one armrest between chairs).

Inside each leg (5) is provided a moving device (9) according to the invention. The detailed structure of the moving device 9 will be described with reference to FIG.

The hanging part (3) is made of a hollow rectangular steel pipe ,
Inside, a pin (10) pointing left and right and a stopper pin
(11) are fixed.

The lower base (4), together with the facing longitudinal direction, a box type which opens downward, the connecting portion of the hanging portion (3) is opened, drooping portion (3) and the lower base (4) Are connected to each other.

At both front and rear ends of the upper surface of the lower base (4),
Lower with the head (12) (12), and guide rod spring washer having a buffer action (13) is wrapped (14) (14) is vertically
ing.

[0019] At the center portion of the outer plate (15) of the lower base (4), it is substantially vertical slit (16) is provided. An adjuster (17) whose height is adjustable is provided at two places before and after the lower end of the lower base (4) .

The guide rod (14) is made of a square steel pipe.
Longitudinal direction into the mounting hole penetrating vertically provided at front and rear ends of the facing arms (18) (18a) (18a ), is vertically movable through that
I have. Before and after the lower surface of the arm (18) , casters (19) and (19)
Is attached.

[0021] (20) is a toggle link, and the lower end of the upper link which is bent in plan view anterograde U-shaped (21), on both sides
Definitive two lower link (22) an upper end (22), the pin (23)
And are rotatably connected to each other, and are arranged in the legs (3) . The upper end of the upper link (21), said pin
It is rotatably attached to (10).

A lower end of the lower link (22) has a left-right rotating shaft (24) pivotally attached to an intermediate portion of the arm (18) in the front-rear direction.
It is fixed to.

The rotary shaft (24), the through slit (16) extends towards the outer side of the lower base (4), in its outer end portion, bending operation toggle link (20) in the vertical direction Handle (25) is fixed.

The handle (25) has a handle (26) extending forward and backward from the rotary shaft (24), and can be rotated by stepping on both the front and rear.
As can cause Rukoto, has from the two stepping lever provided at the tip of the shank (26) (27) (28).

Next, the connected chair constructed as described above.
The operation of the moving device (9) (9) of (1) will be described. FIG.
Is connected chair (1) with a constant location on the floor, a state that may be used
Show. At this time, casters (19) is below the adjuster (17)
Not out collision, therefore, the adjuster (17) to abut tightly on the floor, is fixed so as not to move the coupling chair (1).

FIG. 5 shows a state where the connecting chair (1) is movable . At this time, casters (19) and (19) are adjusters (17)
And the projecting downward, float the lower base (4) from the floor
In addition, the casters (19) (19) support the weight of the connecting chair (1). Therefore, two moving devices (9) at both ends of the connecting chair (1)
(9), both to be in this state, pushing the connecting chair (1), and pulling, it is possible to move it.

FIG.SetLooking at the installation state in more detail,
Ndol (25)ofFront sideTreadle(27) goes up,Treadle
(28) goes downAndHandle (25)FixedAnd
Lower link of the toggle link (20) via the rotating shaft (24)
(22) (22)IsRotateAndToggle link (20)Positive
The letter "ku"ConditionTurn to,It contracts in the vertical direction
ing.

The upper end of the upper link (21) of the toggle link (20) is pivotally supported by a hanging part (3) via a pin (10), and the lower links (22) and (22) can move up and down. because it is fixed such to the arm (18) to a rotary shaft which is supported lifting (24), shrunken vertically toggle link (20) via a rotary shaft (24), lifting the arms (18) It will be.

[0029] Since the caster arms (18) (19) (19) is mounted, casters (19) (19) is also lifted becomes higher than the lower end of the adjuster (17), the adjuster ( 17) is in contact with the floor and supports the weight of the connecting chair (1).

When the foot is released from the handle (25), the arm (18)
Since drop-off down in its own weight, casters (19) (19) is made into contact with the floor, not the bears the weight of the connection the chair (1), the casters (19) (19) The connecting chair (1) cannot be moved.

Next, from the constant stationary state of FIG. 4, considered manner to a movable state. In the state of FIG. 4, step on the front side of the stepping foot rod (27) of the handle (25), the handle
When the (25) is turned forward and downward, the lower link (22) of the toggle link (20) is also turned in the same direction via the rotation shaft (24), that is, counterclockwise in the drawing .

In this case, the distance between the center of the rotating shaft (24) serving as a fulcrum of rotation and the stepping rod (27) and the pin (23) (upper link (21) and lower link (22) (22)) in the distance to the connection to which the pin), as is clear in the figure, since the latter is much smaller, the force stepping on foot would generate a greater force to rotate the pin (23). Lateral force as a component of the force to rotate the pin (23) (toggle link
The intermediate connecting portion (lateral force applied to the pin (23)) of (20) also increases.

According to the principle of the toggle link mechanism,
The lateral force on the pin (23) creates a greater force to extend the toggle link (20) in the vertical direction.
The force to extend the toggle link (20) in the vertical direction is the upper link
The opening angle between (21) and the lower links (22) and (22) increases,
The closer to 80 °, the larger.

[0034] As a result, the toggle link (20), the rotation shaft (2
After the arm (18) is lowered through the step (4) and the casters (19) and (19) come into contact with the floor, the weight of the connecting chair (1) (strictly speaking, the connecting chair (1) has two sides). Since the moving devices are mounted, the force applied to one moving device is almost half of the weight of the connecting chair (1).) The connecting chair (1) is lifted, and the adjuster (17) is lifted. Will be lifted off the floor.

When the handle (25) is fully rotated, the rotation of the toggle link (20) reaches the top dead center (the opening angle between the upper link (21) and the lower links (22), (22)). The arm (18) continues to descend while receiving resistance from the spring washer (13) when the top dead center is exceeded.
(22) When (22) abuts against a stopper pin (11) provided on the hanging part (3), the rotation of the handle (25) and the toggle link (20) and the lowering of the arm (18) are prevented. (State of FIG. 5).

In this state, even if the foot is released from the stepping rod (27), the toggle link (20) has already rotated beyond the top dead center, so that the weight of the connecting chair (1) is reduced. Even if the user tries to shrink the vertical direction of the link 20, the toggle link 20 does not return, and the casters 19, 19 keep the state in which the connecting chair 1 is lifted.

For one moving device (9), a connecting chair
After lifting (1) and making it movable, the same operation is performed on the other moving device (9), and if it is made movable, the whole connected chair (1) can be moved. it can.

Next, after moving the consolidated chair (1), the floor is constant location, with in a manner causing so as not to freely move
State. In the state of FIG. 5, the stepping rod of the handle (25)
(27) Hang your feet on (28). In this case, the toe of the foot rides on the rear step rod (28), and the heel of the foot rides on the front step rod (27). Then, apply force to the stepping rod (28) with your toes,
The handle (25) is rotated in the clockwise direction in FIG.

The handle (25) Then rotate, via the rotational shaft (24), the lower link (22) of the toggle link (20) (22) times be in the same direction (direction of separating from the stopper pin (11)) et al. is dynamic
Re that. The toggle link (20) begins to bend in a U-shape beyond the top dead center and shrinks in the vertical direction.
8) moves upward with respect to the lower base (4) and casters (1
9) (19) withdraws . On the contrary, the lifted connecting chair (2) begins to fall toward the floor,
The floating adjuster (17) lands on the floor, and the connecting chair
Bears the weight of (1), a fixed state (the state in FIG. 4).

It should be noted here that the toggle link
After (20) exceeds the top dead center , the toggle link (20) shrinks only by the weight of the connecting chair (1). In order to prevent the connecting chair (1) from suddenly falling to the floor, hold down the stepping rod (27) on the front side of the handle (25) with the heel of the foot and apply the brake while It is necessary to rotate 25) clockwise.

The connecting chair embodying the present invention described above.
(1) mobile device (9) is because using a toggle link mechanism for bending and stretching in the vertical direction, a foot force, easily, comfortably, teeth
Duck reliably lift the coupling chair (1), or a movable state, or can be in a constant stationary state.

Further, an arm (18) toggle links (20), but because it is internal to yield capacity of the leg portion (5), without such legs of the user is sandwiched between them, safety It is.

[0043] because of the use of casters (19) so as to hold the arm (18) vertically movable in the lower base (4) having a (19), two guide rods (14) (14), structure Has become easier. However, the present invention is not limited to this structure.

The handle (25) for bending and extending the toggle link (20) in the vertical direction is fixed to the rotating shaft (24) fixing the lower end of the lower link (22). It is possible to reduce the size and make the device compact .

[0045]

According to the first aspect of the present invention, the following effects can be obtained. (A) from using the toggle link mechanism for bending and stretching in the vertical direction, a foot force, easily, comfortably, securely, or a movable state by lifting furniture such coupling chairs and tables, or the installation state be able to.

(B) Since the arm and the toggle link are housed inside the legs, the feet and the like of the user are not caught between them, and the safety is ensured.

(C) Do not hold the handle with your feet
However, so that the caster is below the ground part of the leg,
Since the moving device is maintained, it is convenient to use.

According to the second aspect of the present invention, the number of parts is reduced, the structure is simplified, and the apparatus is made compact by devising a handle mounting structure for bending and extending the toggle link in the vertical direction. it can.

According to the third aspect of the present invention, the up and down movement of the arm is stabilized because the front and rear portions of the arm are passed through the guide rod to guide the up and down movement.

According to the fourth aspect of the present invention, the height of furniture and the like can be adjusted.

[Brief description of the drawings]

FIG. 1 is a front view of an articulated chair provided with an embodiment of the present invention.
(One chair on the left is in a standing position).

2 is a right side view illustrating a state where the floor has been fixed location of the coupling chair Ru with an embodiment of the present invention shown in FIG.

FIG. 3 shows a state in which the connecting chair shown in FIG. 1 is movable .
It is a right side view.

[4] the floor of the main part of the connecting chair shown in FIG. 1 is a side view of the condition being constant location.

FIG. 5 shows a state where the main part of the connecting chair shown in FIG. 1 is movable.
Is a side view definitive.

FIG. 6 is a cross-sectional plan view of a main part of the connection chair shown in FIG. 1;

7 is an A-A longitudinal section view of FIG.

[Explanation of symbols]

(1) Connecting chair (2) Chair alone (3) Hanging down (4) Lower base (5) Leg (6) Backrest (7) Seat (8) Armrest (9) Moving device (10) Pin (11) Stopper Pin (12) Head (13) Spring washer (14) Guide rod (15) Outer plate (16) Slit (17) Adjuster (18) Arm (18a) Mounting hole (19) Caster (20) Toggle link (21) Upper link (22) Lower link (23) Pin (24) Rotary axis (25) Handle (26) Handle (27) (28) Stepping rod

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. ⁷ , DB name) B60B 33/00 A47B 91/00 A47C 1/12

Claims (4)

(57) [Claims] 1. A caster provided on a leg portion of furniture or the like, which can enter and exit downward, protrudes downward from a ground contact portion of the leg portion, thereby lifting the leg portion from the floor and moving the furniture or the like. In a moving device for furniture or the like, the legs are directed to the lower end thereof in the front-rear direction,
An arm having a box-shaped lower base that opens downward, facing in the front-rear direction, and provided with a pair of casters on the lower surface of both front and rear ends thereof, is disposed inside the lower base so as to be vertically movable, And the lower end of the upper link, the lower end of which is pivotally attached to the left and right pins fixed in the legs, and the lower end,
A toggle link rotatably connected to an upper portion of a lower link fixed to a left-right rotation shaft pivotally attached to an intermediate portion of the arm is disposed in the leg, and the toggle link is vertically moved. By operating the handle to bend and extend, the casters can be moved in and out of the lower part of the lower base , and the upper and lower links
Up and down by operating the handle
Upper link and lower link exceed top dead center
To the opposite side in the front-rear direction, and is fixed to the lower base.
Contact with the stopper that has been extended in the vertical direction.
A moving device for furniture or the like, characterized in that the device can maintain a closed state . Wherein the handle for bending operation the toggle link in the vertical direction, characterized by being fixed to a rotary shaft that holds the lower end of the lower link of the toggle link,
A moving device such as furniture according to claim 1. 3. A pair of guide rods are vertically suspended on the upper surface of the lower base while being spaced back and forth, and the front and rear portions of the arm are passed through the guide rod, and the arm is moved up and down into the lower base. The moving device for furniture or the like according to claim 1 or 2 , wherein the moving device is arranged freely. The 4. A lower base of the grounding portion, characterized in that the height adjustable adjuster vertically, moving device furniture according to any one of claims 1-3.