JP2543501Y2 - Caster mounting device - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION This invention is office, household table, attached set of furniture casters like legs of the chairs <br/>, it relates to a height adjustable caster mounting device.

[0002]

2. Description of the Related Art Conventionally, as the above-mentioned caster mounting device , there has been one disclosed in Japanese Utility Model Publication No. 4-2580. The caster mounting device is configured such that a lower end of a vertical mounting shaft is rotatably connected to a caster body on which a roller is rotatably mounted by a horizontal axis, and an upper end of the mounting shaft is a table or the like. A caster mounting member such as a floor leg provided on a leg portion of a fixture is provided so as to protrude into a caster receiver fitted in the mounting member. The upper end of the mounting shaft is fitted in this vertical hole so as to be able to move up and down, and a tightening screw is tightened from a mounting member to a tightening hole formed perpendicular to a separation groove in the caster receiver, The mounting shaft is held and fixed by reducing the diameter of the vertical hole.

[0003]

However, in the conventional caster mounting device described above, since the tightening screw is tightened from the outside of the mounting member to the tightening hole of the caster receiver, assembly and adjustment of the height of the caster are troublesome. There was a problem. This invention is based on the conventional caster mounting
To solve the problems of location, it is an object of this to provide an assembly and height adjustment can be easily further configuration also relatively simple inexpensive caster mounting device to caster caster mounting member.

[0004]

The invention of claim 1 Means for Solving the Problems], the casters rotatably connected to the lower end of the mounting shaft of the roller rotatably fitted and the caster body in the axial direction by the horizontal axis in the caster body And caster mounting members
In the caster mounting device consisting of:
Screw a hand nut into the screw formed at the top, and
When the hand adjustment nut is brought into contact with the lower surface of the mounting member,
The upper part of the mounting shaft is projected on the insertion part provided in the mounting member.
And the lower end of the coil spring, which is loosely fitted on the upper part of the mounting shaft
Is supported on the mounting member, and the upper end of the mounting shaft is restrained by a spring.
The coil spring under the spring restraint.
The mounting shaft is urged upward with its ends supported .

[0005]

The caster mounting device according to the invention of claim 1 is:
The upper part of the handwheel nut of the mounting shaft, the lower end of which is connected to the caster body, is passed through an insertion hole or the like provided in the lower wall of the caster mounting member, such as the floor leg of the table, and the coil is passed through the upper part of the lower wall of the mounting shaft. and a clearance fit the spring, the upper end of the mounting shaft to hold the spring suppressed, and pedestal optionally
Fixed on the mounting member, the spring force of the coil spring is interposed between the lower wall and the spring suppressed, via a spring suppressing and mounting shaft, it is pressed against the lower surface of the lower wall to urge the nut upward Accordingly, the casters can be easily attached to the caster mounting members such as the table floor legs in a short time.

[0006]Claim 1Casters based on the idea ofTaking
Attachment deviceAfter assembling, furniture such as tablesOutside
so,Hand nut located below the caster mounting member
By turning it up and down by hand,Mounting shaft with pedestal etc.
Cover, coil spring, and spring restraint
Also,Easily adjust the height from the floor to the lower wall of the mounting member
I can do it.

Furthermore, a caster according to the invention of claim 1
The mounting device is such that a hand nut is screw-fitted to the mounting shaft of the caster body , a coil spring is loosely fitted to the mounting shaft, and an upper end of the mounting shaft is, for example, a spring restraint composed of an E-type retaining ring and a flat washer. Since the spring retainer having the simple structure is mounted, the structure is relatively simple, the production of the component parts is not expensive, and the caster mounting apparatus as a whole can be provided at low cost.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. 1, 2 and 3, reference numeral 1 denotes a caster main body.
The right roller 3 is rotatably mounted, and the lower end of the mounting shaft 4 on the vertical axis is rotatably connected around the shaft. The mounting shaft 4 moves vertically with respect to the caster body 1. Being restrained.

The mounting shaft 4 extends vertically above the caster main body 1, has a screw 4a formed at the upper part, an annular groove 4b formed at the upper end, and a hand nut 5 screwed to the screw 4a of the mounting shaft 4. Mated. The nut 5 has an inner peripheral portion 5
a is a metal such as steel, and the outer peripheral portion 5b is made of a synthetic resin. These are integrally formed in a disk shape, and a large number of non-slip grooves 5c are formed on the outer peripheral surface 5c.

Further, the nut 5 upper portion of the mounting shaft 4
Fitted is fitted a coil spring 6 is play, the annular groove 4b E-type retaining ring 7 is engaged detachably, flat washer 8 between the retaining ring 7 and the spring 6 is play in the mounting shaft 4 The spring ring 9 is constituted by the retaining ring 7 and the flat washer 8.

[0011] caster 10 of the embodiment constructed as described above, the left extending in the longitudinal direction is provided left of the table 11, the lower end of the right leg portion 12, Migiyukamen'ashi 13 i.e. key
It is attached to the front end 13a of the caster mounting member . A notch 1 that opens to the front below the front end 13a of the floor leg 13
An insertion hole 13d is formed in the lower wall 13c of the front end portion 13a, and a rectangular recess 13e is provided on the outer peripheral side of the insertion hole 13d.

The mounting shaft 4 from which the coil spring 6 and the spring retainer 9 of the caster 10 are removed is inserted from below into the insertion hole 13 d of the floor leg 13, and the nut 5 is placed under the front end 13 a of the floor leg 13. It is brought into contact with the lower surface of the wall 13c. Let a clearance fit the spring 6 to the projecting portion on the lower wall 13c of the mounting shaft 4, houses the lower end of the spring 6 in the recess 13e of the lower wall 13c
It was supported, upwardly from to support the upper end of the field <br/> ne 6 under the flat washer 8 fitted to the mounting shaft 4, and the E-type retaining ring 7 is engaged with the annular groove 4b of the mounting shaft 4 the upper end , Constituting the spring restraint 9.

In this state, the nut 6 is previously positioned at the lower end of the mounting shaft 4, so that the spring 6 does not act on the spring force or acts only slightly. So
Then, when the nut 5 is rotated by hand and moved above the mounting shaft 4, the nut 5 rises with respect to the floor supporting the roller 3 of the caster body 1, so that the front end of the floor leg 13 The portion corresponding to the cutout 13b of the lower wall 13c of the portion 13a is pushed up and raised.

When the lower wall 13c of the floor leg 13 is pushed up, the distance between the lower wall 13c and the spring retainer 9 becomes narrower and the spring 6 is compressed, so that the lifting force is applied to the mounting shaft 4 via the spring retainer 9. In addition, the nut 5 is pressed against the lower wall 13c, and the mounting shaft 4 can be held on the lower wall 13c without rattling. If the nut 5 has been raised too much, the nut 5 is lowered by rotating the nut 5 in a direction opposite to that at the time of lifting, so that the lower wall 13c of the front end 13a of the floor leg 13 with respect to the floor surface.
Is lowered.

As described above, the casters 10 are mounted on the front ends 13a of the left and right floor legs 13, respectively, and the rear casters 14, such as those with a lock device, are mounted on the rear ends of the left and right floor legs 13. The left and right floor legs 13 are fixed to the front ends 13a thereof at the lower ends of the left and right pillars 15, respectively.
2 and the top plate 16 is pivotally supported on the upper end of the pillar 15 so as to be able to fall. In FIG. 1, reference numeral 17 denotes a leg cover that covers the rear of the floor leg 13 from the pillar 15.

Further, if necessary, the nut 5 is turned up and down by manually turning the nut 5 from outside the cutout portion 13b of the floor leg 13,
The height is adjusted so that the table 16 held in a state where the table 11 is tilted is horizontal. Therefore, the table 11
Raise the top plate 16 and fold it as shown by the chain line in FIG.
In this state, it is moved to a required storage location by the casters 10 and the rear casters 14. In addition, the rear caster 14 with the lock device is used when the table 11 is used.
Lock the roller so that it does not rotate during storage etc.
The table 11 is prevented from moving. In this embodiment, the order of assembling the table 11, especially the legs 12, can be changed as appropriate, such as when the mounting shaft 4 is held on the floor legs 13.

In the present invention, in the above embodiment, after the mounting shaft of the caster body is inserted into the insertion hole formed in the lower wall of the floor leg, a spring is loosely fitted on the mounting shaft, and the spring is held on the upper end of the mounting shaft. Provided on the lower wall of the floor leg, a large-diameter portion through which the spring or the spring retainer passes and a small-diameter portion where the spring is supported are connected to form a round-shaped insertion hole, or a front end is formed in the lower wall. Alternatively, if a notch that opens to the side edge is formed and the insertion part of the mounting shaft is inserted, the spring and the spring retainer are attached to the mounting shaft, and the spring and the spring retainer are positioned above the lower wall, and the lower wall is turned manually. With the nut positioned, the mounting shaft can be mounted to the floor leg.

In the present invention, the spring is held by holding the spring seat on the upper end surface of the mounting shaft with a screw or the like.
A spring restraint supporting the upper end of the spring may be configured.

Furthermore, the present invention is not limited to the above-described floor legs of the table, but includes legs fixed to a table or a table top, legs of a chair, etc. Widely applicable to.

[0020]

[Effect of the invention] As described above, the claims of the invention
1 caster mounting apparatus according to at caster attachment device consisting coupled to caster body, the mounting shaft
Screw a hand nut into the screw formed on the top of
When this hand nut is brought into contact with the lower surface of the mounting member,
In both cases, the upper part of the mounting shaft is placed on the insertion part provided in the mounting member.
Under the coil spring that protrudes and is loosely fitted on the upper part of the mounting shaft
An end is supported on the mounting member, and a spring is mounted on the upper end of the mounting shaft.
Hold the retainer, and under this spring retainer,
Since the upper end is supported and the mounting shaft is urged upward , the following effects can be obtained.

That is, in the caster mounting device according to the first aspect of the present invention , the upper part of the hand-rolling nut of the mounting shaft, which is connected to the lower end of the caster body, is provided on the lower wall of the caster mounting member such as the floor leg of the table. etc. through the insertion hole, and a clearance fit the coil spring in the lower wall upper portion of the mounting shaft, the upper end of the mounting shaft to hold the spring suppressed, desired response
Then, the pillars and the like are fixed on the mounting member, and the spring force of the coil spring interposed between the lower wall and the spring holder urges the nut upward through the spring holder and the mounting shaft to lower the nut. by pressing the lower surface of the wall, it is possible to assemble the casters caster mounting member such as the floor legs in a short time easily table.

Further, a caster pick-up according to the invention of claim 1 is provided.
After assembling the attachment device , outside the table or other fixtures
In, by lifting by hand-cranked the hand-cranked nut <br/> located below the caster mounting member, the mounting shaft such in pedestal
Even if the upper part of the coil spring and spring retainer are covered,
The height from the floor to the lower wall of the mounting member can be easily adjusted.

Furthermore, a caster according to the invention of claim 1
In the mounting device , a hand nut is screw-fitted to the mounting shaft of the caster body , a coil spring is loosely fitted to the mounting shaft, and a spring restraint constituted by, for example, an E-type snap ring and a flat washer is mounted on the upper end of the mounting shaft. Since the spring retainer having a simple structure is mounted, the structure is relatively simple, the production of the components is not expensive, and the caster mounting device as a whole can be provided at low cost.

[Brief description of the drawings]

FIG. 1 is a caster mounting device according to an embodiment of the present invention.
Schematic side view showing the table are set only

FIG. 2 is a longitudinal side view showing the caster of FIG. 1 together with a caster mounting member.

FIG. 3 is an exploded perspective view showing the caster of FIG. 1 together with a caster mounting member.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Caster main body 2 Horizontal shaft 3 Roller 4 Mounting shaft 4a Screw 4b Annular groove 5 Hand-held nut 6 Coil spring 7 Retaining ring 8 Flat washer 9 Spring restraint 10 Caster 11 Table (furniture) 12 Leg 13 Floor leg (caster mounting member) 13a Front end 13b Notch 13c Lower wall 13d Insertion hole (insertion) 15 Pillar

Claims (1)

(57) [Scope of request for utility model registration] A caster having a roller rotatably mounted on a caster body by a horizontal axis and a lower end of a mounting shaft rotatably connected to the caster body about an axis ;
Caster mounting device consisting of caster mounting members
And a screw nut formed on the upper part of the mounting shaft.
And screw this hand nut under the mounting member.
Surface, and on the insertion portion provided on the mounting member.
The upper part of the mounting shaft, and play-fit the upper part of the mounting shaft.
The lower end of the coil spring is supported on the mounting member.
Hold the spring restraint on the upper end of the shaft, and under this spring restraint
A caster mounting device, wherein an upper end of the coil spring is supported to urge the mounting shaft upward .