JP2527679Y2 - Recessed caster with protector - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a caster which is mounted on a chair, a wagon table or the like.

[0002]

2. Description of the Related Art Usually, this type of caster has only wheels exposed to the lower surface in mounting holes formed in the lower surface of a leg of furniture such as a chair or a wagon table or the lower surface of a horizontal rail connecting front and rear legs. It is embedded and attached in a state.

[0003] By the way, when moving furniture such as chairs and wagon tables to which these casters are attached, the furniture is moved under casters when not in use, so that the furniture can be placed under a desk or inside other furniture. When moving, such chairs or wagon tables come into contact with a desk or other furniture, and the moving furniture, or a desk or the like that stores the moving furniture. Furniture may be damaged.

[0004]

[Problems to be solved by the invention] In view of the above points, the present invention prevents moving furniture, such as chairs and wagon tables, attached to casters from damaging the moving furniture and other furniture due to their movement. It is intended to provide an implantable caster with a protector that can be used.

[0005]

SUMMARY OF THE INVENTION An implantable caster with a protector according to the present invention has the following objects.
A housing having an opening at the lower surface and an opening at the front, a wheel attached from the opening to the inside of the housing, and a projection for a protector integrally provided at the front, the opening of the housing; A wheel that projects from the lower surface of the body to be mounted in a mounting recess formed on the lower surface and side surfaces of the body to be mounted, such as furniture, corresponding to the outer shape of the housing. At the same time, the protector is mounted with the protrusion for the protector protruding from the side surface of the attached body.

[0006]

The embedded caster with a protector according to the present invention as described above protrudes downward from an attached body such as a chair, a wagon table or other furniture legs, or a horizontal rail connecting front and rear legs. These furniture and the like can be moved by the set wheels, and the protector projections protruding to the side from the attached body such as the legs prevent the attached body furniture from directly contacting other furniture and the like. Therefore, it is possible to prevent the moving furniture and other furniture from being damaged by contact with each other.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in more detail with reference to the accompanying drawings.

The implantable caster 1 with a protector according to the present invention is attached to, for example, a horizontal rail 4 connecting front and rear legs 3 and a lower end of a chair 2 as shown in FIG. As shown in FIG. 3, the caster 1 has a housing 7 having an opening 5 on the lower surface and an opening 6 communicating with the opening 5 on the front surface, and is attached from the opening 6 to the housing 7. A cover 8 integrally provided with a protruding portion 9 for a protector on a front surface thereof and sealing the window portion 6 of the housing 7;
As shown in FIG. 2, the mounting recesses 11 are provided in front and behind the cross rail 4 of the chair 2 as an attached body, opening on the lower surface and side surfaces and provided in a paragraph shape corresponding to the outer shape of the housing. To
The front surface of the housing 7 and the side surface of the horizontal rail 4 are attached in a state where the wheel 8 protrudes from the lower surface of the horizontal rail 4 and the protector protrusion 9 protrudes from the side surface of the horizontal rail 4. is there.

The caster 1 shown in the figure is provided with mounting projections 12, 12 on the left and right ends of a lower end of a housing 7, and the width of a window portion 6 provided with the front edge of the upper wall of the housing 7 on the front. Notch, and
Dovetail grooves 13 are provided on the left and right sides of the fenestration 6 on the upper and lower sides. The left and right guide grooves 1 are provided on the inner surface of the rear wall of the housing 7.
4 and 14 are provided.

The wheel 8 is attached to a lower part of a support frame 15 having a gate-shaped cross section by an axle 16 having both ends protruding from the outer surface of the support frame 15. Guide grooves 14 provided on the inner surface of the rear wall of the housing 7
Further, projections 18, 18, 18, 18 which are slidably fitted into guide grooves 17, 17 provided on the rear surface of the lid 10 are provided.

The cover 10 has substantially the same width as the housing 7 and a protector projection 9 is integrally provided on the front surface thereof. Protrusions 19 are provided on the front surface of the support frame 15 of the wheel 8, and guide grooves 17, 17 for slidably fitting left and right projections 18, 18 provided on the front surface of the support frame 15 of the wheel 8 are provided. The dovetail grooves 1 provided on the left and right of the front surface of the housing 7
3 are provided with dovetails 20, 20.

In the figure, reference numeral 21 designates a wheel 8 mounted between the upper surface of the support frame 15 of the wheel 8 and the inner surface of the upper wall of the housing 7.
Is a spring that is biased downward from the lower surface of the housing 7 so as to be freely retractable. An axle 1 protruding forward and backward from the support frame 15 of the wheel 8 is provided on the inner surface of the front wall, the inner surface of the rear wall, and the protruding surface 19 of the rear surface of the lid 10 below the window portion 6 on the front surface of the housing 7.
6 are provided with grooves 22, 23, and 24, respectively, into which the protruding ends are slidably fitted.

To assemble the caster 1 constructed as described above, first, as shown in FIG. 4, a support frame 15 to which wheels 8 are attached is inserted from a front window 6 of a housing 7 and the support frame 15 is inserted. The projections 18 provided on the left and right sides of the rear surface are provided with guide grooves 14 provided on the left and right sides of the inner surface of the rear wall of the housing 7.
The protruding ends of the axle 16 projecting from the rear to the rear face are respectively fitted into the grooves 22, and the wheels 8 are projected from the lower surface opening 5 of the housing 7 until the projections 18, 18 contact the lower edges of the guide grooves 14, 14. In this state, the spring 21 is engaged between a pair of protrusions 25 provided on the lower surface of the upper wall of the housing 7 and attached between the upper wall of the housing 7 and the upper surface of the support frame 15. The dovetails 20, 20 with the lid 10 provided on the left and right sides of the rear surface thereof, and the lower end of the protruding surface 19 from the upper end opening of the dovetail grooves 13, 13 provided on the left and right of the fenestration 6 on the front surface of the housing 7. And is attached to the front surface of the housing 7 such that the fenestration 19 seals the fenestration 6.

The caster 1 assembled as described above is provided with a casing 7 of the caster 1 before and after the left and right horizontal rails 4 and 4 connecting the front and rear legs 3 and 3 of the chair 2.
Into the caster mounting recess 11 which is provided on the lower surface and the side surface of the horizontal rail 4 so as to correspond to the outer shape of the horizontal rail 4.
The front and side rails 4 are flush with each other, and the wheels 8 are
The protector projections 9 provided on the lid 10 project from the lower surface, and the protector projections 9 are fitted to project from the side surfaces of the horizontal rail 4. The casters 1 are fixed to the lower surface of the horizontal rail 4 by screwing the screws 27, 27.

When mounted on the horizontal rail 4 as described above, the upper surface of the housing 7 is in close contact with the mounting recess 11 of the horizontal rail 4 and the upper end opening of the dovetail groove 13 provided on the front surface of the housing 7. Is closed, and the dovetail 20 fitted in the dovetail groove 13 is fixed in the dovetail groove 13, so that the lid 10 is securely fixed to the housing 7. still,
In the illustrated embodiment, dovetail grooves 13 are provided on the left and right of the window portion 6 of the housing 7 and dovetails 20 provided on the left and right of the protruding surface 19 on the rear surface of the lid 10 are fitted therein. The window 6 itself may be formed in a dovetail shape, and the protruding surface 19 on the rear surface of the cover 10 or the cover 10 itself may be formed in a dovetail shape and fitted into the window 6. Further, in the above case, the dovetail groove is provided on the housing 7 side and the dovetail is provided on the lid 10 side. The dovetail groove is provided on the lid body 10 side using the housing 7 side as a dovetail. In this case, at least a part of the rear surface of the lid 10 may be connected to the horizontal rail 4 in order to prevent the lid 10 from falling off the housing 7.
It is necessary that the upper end of the dovetail groove on the rear surface of the lid 10 be closed in the mounting recess 11.

According to the caster 1 according to the present invention as described above, the wheel 8 can be moved by the wheels 8 protruding from the lower surface of the side rail 4 of the chair 2 and the side of the side rail 4 provided integrally with the caster 1. Projecting part 9 for the protector
Accordingly, when the chair 2 is stored under a desk or the like, it is possible to prevent the chair 2 from being in contact with these desks and other furniture and being mutually damaged. Further, in the embodiment of the figure, the wheel 8 is mounted in the housing 7 slidably up and down while being elastically urged downward by the spring 21. Spring 21 due to downward load
Is compressed and the wheels 8 are pulled into the housing 7 so that the horizontal rail 4 does not move carelessly due to contact with the floor surface, and when the chair 2 moves, the wheels 8 move to the lower surface of the horizontal rail 4 It can be easily moved by protruding.

In the above embodiment, the casters 1
Is provided with a protector projection 9 having substantially the same width as the width of the housing 7 on the front surface of the housing 7, so that the side surface of the mounting recess 11 provided on the horizontal rail 4 of the chair 2 extends over the entire width of the housing 7. The opening and the mounting of the front surface of the housing 7 and the side surface of the horizontal rail 4 at the same level may cause a problem in mounting strength when a force acts on the caster 1 from the lateral direction of the chair 2. In such a case, for example, as shown by the imaginary line in FIG. 6 or FIG. The mounting strength against the force can be increased. Also, the protector projection 9 provided on the front surface of the housing 7 is made smaller than the front surface shape of the housing 7 so that the side opening of the mounting recess 11 is smaller than the housing 7. When the housing 7 itself is embedded in the inside of the horizontal rail 4 so that only the protector projection 9 projects from the side opening of the horizontal rail 4, the housing 7 engages with the opening edge. Thus, the strength against the acting force from the lateral direction can be increased.

[0018]

As described above, the implantable caster with the protector according to the present invention can be easily moved by the wheels protruding from the lower surfaces of the legs when the furniture or the like to which the protector is attached is moved. At the same time, the protector projection provided integrally with the caster can prevent the furniture from being damaged due to contact with other furniture or the like during movement.
Moreover, since the protector projection is integrally attached to the casing of the caster, it can be easily manufactured, assembled, and further attached to furniture or the like at one time.

[Brief description of the drawings]

FIG. 1 is a perspective view of a chair to which a caster according to the present invention is attached as viewed from below.

FIG. 2 is a perspective view of a caster mounting portion.

FIG. 3 is a perspective view in which a part of a caster is broken.

FIG. 4 is an exploded perspective view of a caster.

FIG. 5 is a bottom view of a caster mounting portion.

FIG. 6 is a longitudinal sectional front view of the same.

FIG. 7 is a vertical sectional side view of the same.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Caster 2 Chair 3 Legs 4 Side rail 5 Opening 6 Window window 7 Housing 8 Wheel 9 Protector protrusion 10 Lid 11 Mounting recess 12 Protrusion 13 Dovetail groove 14 Guide groove 15 Support frame 16 Axle 17 Guide groove 18 Projection 19 Projection surface 20 Dovetail 21 Spring 22 Groove 23 Groove 24 Groove 25 Protrusion 26 Screw hole 27 Screw 30 Protrusion

Claims (1)

(57) [Scope of request for utility model registration] A housing provided with an opening at a lower surface and a window at the front, a wheel attached from the window to the housing, and a projection for a protector integrally provided at the front; A cover body for closing a window portion of the body, the wheel being mounted on a mounting recess formed on the lower surface and side surfaces of the mounting body such as furniture and provided in correspondence with the outer shape of the housing. An embedded caster with a protector, which is mounted in such a manner that the protector protrudes from the lower surface of the device and the protector projection protrudes from the side surface of the attached body.