JP4837496B2 - Caster equipment - Google Patents

Description

  The present invention relates to a caster device having a swing mechanism in which a wheel turns around a vertical axis, and more particularly to a caster device that allows a wheel to be locked from a certain direction regardless of the swing position of the wheel. is there.

Conventionally, in order to support furniture such as cabinets, tables, and chairs in a movable manner, caster devices are attached to the lower part of the main body and legs of the furniture.
The caster device includes a wheel that rotates about a horizontal axis, and a swing mechanism that supports the wheel so as to be able to turn about a vertical axis.

By the way, such a caster device is usually provided with a stopper mechanism in order to prevent movement of furniture after installation.
A stopper mechanism is known in which a stopper member that presses a wheel in a spring manner is provided on a bearing seat that supports the wheel so that it can be engaged and disengaged by its operating lever.

  However, since the conventional caster device installs the stopper member on the wheel bearing seat, the direction of the operation lever changes depending on the swing position of the wheel, and the operation lever faces a wall or other furniture in a narrow space. And, there is a problem that the wheel locking operation becomes very difficult.

  An object of the present invention is to provide a caster device that can lock a wheel from a certain direction regardless of the swing position of the wheel in view of the problems of the conventional caster device.

In order to achieve the above object, a caster device according to the present invention is a caster device having a swing mechanism that supports a wheel so as to be pivotable about a vertical axis, and is provided with a boss serving as a pivot axis of the wheel at a lower portion and fixed to furniture. a pedestal that is, to support the shaft of the wheel, the bearing seat to be fitted rotatably to the boss of the base, base portion is fixed to the bearing seat, provided integrally through the boss of the pedestal to the upper By pressing down through the pressing projection, the stopper piece with springiness that is integrally extended from the base is slid on the upper surface of the pedestal, and the pressing projection is pressed or released by sliding on the stopper portion of the wheel. The operation piece is formed with a flat portion and a concave portion to be formed, and an operation lever for operating the operation piece, and is made of a synthetic resin molded product excluding the metal shaft of the wheel. .

According to the caster device of the present invention, the pressing protrusion for pressing down the stopper member is disposed at the center of the wheel turning, and the pressing protrusion can be operated by the operation lever provided in a fixed direction. Regardless of the swing position, the wheel can be easily locked from a certain direction.
In addition, this caster device can reduce the number of parts and simplify the mechanism by constructing the main parts excluding the wheel shafts from synthetic resin moldings. And the manufacturing cost can be significantly reduced.

  Embodiments of a caster device according to the present invention will be described below based on the drawings.

1 to 2 show an embodiment of a caster device of the present invention.
This caster device includes a wheel 1 that rotates about a horizontal axis, and a swing mechanism that supports the wheel 1 so as to be able to turn about a vertical axis.
And this caster apparatus is equipped with the boss | hub 21 used as the rotating shaft of the wheel 1 in the lower part, the base 2 fixed to furniture (illustration omitted), the axis | shaft 1a of the wheel 1, and the boss | hub 21 of the base 2 A bearing seat 3 that is rotatably inserted, a base 41 is fixed to the bearing seat 3, a stopper member 4 that engages with a part of the wheel 1 by pushing down the tip side, and a base 2 from the stopper member 4. A pressing protrusion 5 that pushes down the stopper member 4 by being pressed downward, an operation piece 6 that slides on the upper surface of the base 2 to press or release the pressing protrusion 5, and the operation piece 6. An operating lever 7 is provided.

The wheel 1 is made of a synthetic resin such as nylon, and as shown in FIG. 3, the wheel 1 penetrates a metal shaft 1a at the center and is engaged with a stopper member 4 in the middle in the axial direction to lock the wheel 1 The latching part 11 is provided.
In the present embodiment, one wheel 1 is formed by joining two divided bodies 12 together.

The pedestal 2 is made of a synthetic resin such as polyacetal, and as shown in FIG. 4, a rectangular mounting portion 22 fitted and fixed to a mounting hole (not shown) on the bottom of the furniture, and integrally below the mounting portion 22. A circular housing 23 is formed, and a boss 21 projects downward from the center of the housing 23.
Further, on the upper surface of the pedestal 2, a receiving frame 24 into which the tip of the operation lever 7 is slidably inserted, a swing shaft 25 of the operation lever 7, and the operation lever 7 are fixed at a lock position and a lock release position, respectively. And a notch 26 is provided.

The bearing seat 3 is made of a synthetic resin such as polyacetal, and includes a circular main body that is rotatably fitted into the housing 23 of the base 2 via a ring-shaped spacer 8.
As shown in FIG. 5, a shaft hole 31 is provided in the center of the bearing seat 3 so as to be pivotably fitted to the boss 21 of the pedestal 2, and the inner side wall 32 has an eccentric position on the wheel 1. A bearing portion 33 that supports the shaft 1a is formed.
As a result, the wheel 1 can turn around the boss 21 of the base 2 via the bearing seat 3 to swing.
Further, the base portion 41 of the stopper member 4 is fixed by fitting at a position on the side wall opposite to the bearing portion 33.

The stopper member 4 is made of a synthetic resin such as polyacetal, and as shown in FIG. 6, the base portion 41 is fixed to the bearing seat 3, and a stopper piece 42 is provided integrally with the spring at the distal end side. Has been.
A pressing protrusion 5 penetrating the boss 21 of the pedestal 2 is integrally provided on the upper portion of the stopper piece 42. By pressing the pressing protrusion 5 downward, the stopper piece 42 is pushed down and the wheel 1 is hooked. Engage with the stop 11.

As shown in FIGS. 2 and 7, the operation piece 6 and the operation lever 7 are integrally formed of synthetic resin such as nylon. Swings horizontally.
The operation piece 6 is pivotally attached to the swing shaft 25 of the pedestal 2 in the vicinity of the center thereof, and the distal end portion thereof is slidably inserted into the receiving frame 24 of the pedestal 2.
Further, the offset portion 61 is provided with a claw 62. By the hooking of the claw 62 to the lower edge of the pedestal and the insertion of the operation piece 6 into the receiving frame 24, the operation piece 6 is It swings around the swing shaft 25 so as to slide on the upper surface.
On the other hand, a concave portion 63 and a flat flat portion 64 are formed along the swinging locus of the operation piece 6 at a portion of the operation piece 6 facing the boss 21 of the base 2.
When the flat portion 64 of the operation piece 6 is positioned on the boss 21, the pressing protrusion 5 penetrating the boss 21 is pressed, and the stopper piece 42 is pushed down and engages with the latching portion 11 of the wheel 1.
Further, when the concave portion 63 of the operation piece 6 is positioned on the boss 21, the pressing protrusion 5 is released from the pressing, and the stopper piece 42 is restored and the engagement with the wheel 1 is released.

  Thus, the caster device of the present embodiment is a caster device provided with a swing mechanism that supports the wheel 1 so as to be pivotable about the vertical axis, and is provided with a boss 21 serving as a pivot axis of the wheel 1 at the lower portion and fixed to the furniture. The pedestal 2 and the shaft 1a of the wheel 1 are supported, the bearing seat 3 is rotatably inserted into the boss 21 of the pedestal 2, and the base 41 is fixed to the bearing seat 3, and the front end side is pushed down. The stopper member 4 that engages with a part of the wheel 1 through the boss 21 of the pedestal 2 through the stopper member 4 and pressed downward to push the stopper member 4 down, and the upper surface of the pedestal 2 Since the operation piece 6 that slides and presses or releases the pressing protrusion 5 and the operation lever 7 that operates the operation piece 6 are provided, the pressing protrusion 5 that pushes down the stopper member 4 is disposed at the turning center of the wheel 1. In addition, the pressing protrusion 5 can be operated by an operating lever 7 provided in a fixed direction, and thus the wheel 1 can be easily locked from a fixed direction regardless of the swing position of the wheel 1. Can do.

  As mentioned above, although the caster device of the present invention has been described based on the embodiments thereof, the present invention is not limited to the configurations described in the above embodiments, and the gist thereof includes, for example, appropriately combining the configurations described in the embodiments. The configuration can be changed as appropriate without departing from the scope of the invention.

  Since the caster device of the present invention has a characteristic that the wheel can be locked from a certain direction regardless of the swing position of the wheel, the caster device can be used suitably for a caster device having a swing mechanism. .

One Example of the caster apparatus of this invention is shown, (a) is sectional drawing which shows a state when a wheel is unlocked, (b) is sectional drawing which shows a state when a wheel is locked. The caster apparatus is shown, (a) is a plan view, (b) is a front view, and (c) is a bottom view. A wheel is shown, (a) is the exploded view, (b) is the figure which looked at the division body from the inside. A pedestal is shown, (a) is a plan view thereof, (b) is a front view thereof, (c) is a bottom view thereof, (d) is a right side view thereof, and (e) is an end surface taken along line AA of (c). (F) is a BB line sectional view of (c). The bearing seat is shown, (a) is a plan view thereof, (b) is an end view of the central section thereof, (c) is a front view thereof, (d) is a bottom view thereof, and (e) is an explanatory view of the vicinity of the bearing portion. It is. A stopper member is shown, (a) is an end view of the central section thereof, (b) is a front view thereof, (c) is a left side view thereof, (d) is a right side view thereof, and (e) is a bottom view thereof. An operation lever is shown, (a) is a plan view thereof, (b) is a front view thereof, (c) is a bottom view thereof, (d) is a left side view thereof, and (e) is a sectional view of a recess.

DESCRIPTION OF SYMBOLS 1 Wheel 1a Shaft 11 Latching part 12 Split body 2 Base 21 Boss 22 Mounting part 23 Housing 24 Receiving frame 25 Oscillating shaft 26 Notch 3 Bearing seat 31 Shaft hole 32 Side wall 33 Bearing part 4 Stopper member 41 Base 42 Stopper piece 5 Press Projection 6 Operation piece 61 Offset part 62 Claw 63 Recess 64 Flat part 7 Operation lever 8 Spacer

Claims (1)

In a caster device having a swing mechanism that supports a wheel so as to be pivotable about a vertical axis, a pedestal that is fixed to furniture with a boss serving as a pivot axis of the wheel at the bottom, and supports the wheel shaft, and a pedestal a bearing seat that is fitted into the boss rotatably, group portion is fixed to the bearing seat, by pushing down via the pressing projection provided integrally through the boss of the base to the top, integrally from the base portion A stopper member for engaging the extended stopper piece with the spring property with the hooking portion of the wheel, an operation piece formed with a flat portion and a concave portion that slides on the upper surface of the base and presses or releases the pressing protrusion; A caster device comprising an operation lever for operating the operation piece, and formed of a synthetic resin molded product excluding a metal shaft of the wheel.

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