JPH0582604U - Embedded caster with protector - Google Patents

Abstract

(57) [Summary] [Purpose] This is a caster for furniture such as chairs and wagon tables, which can be easily and firmly attached to the underside of a narrow leg plate, etc., and it does not collide with other furniture when moving. However, provide casters that do not damage the furniture or other furniture. [Structure] A wheel 11 is attached to the inside of a housing 7 having an opening on the lower surface so as to be retractable from the lower surface opening, and flange portions 14 and 13 are formed on the lower surface and side surfaces of the housing 7. The protector projection 6 is projected laterally, and the protector projection 6 is attached to a mounting recess 12 formed in the bottom surface and side surface of the mounted body 4 with the protector projection 6 protruding from the side surface of the mounted body. Recessed caster with protector 1.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an embedded caster that is attached to furniture such as a chair for a study desk or a wagon table.

[0002]

[Prior Art]

 Usually, this type of caster is installed in the mounting hole provided on the underside of the cross rail that connects the lower surface of the leg plate of furniture such as chairs and wagon tables or the front and rear of the legs, or the lower parts of the left and right supporting legs. , The wheels are attached with the wheels protruding from the bottom surface of these furnitures.

Furniture such as chairs and wagon tables to which these casters are attached can be easily moved by using the casters, and when not in use, they can be stored under a study desk or inside other furniture. It will be done. However, especially in the case of this chair for a study desk, since the leg plate to which the casters are attached and the horizontal rail of the leg are often made of a relatively thin plate material, the thin leg plate or the like is used. When drilling a mounting hole for burying casters on the lower surface, the thickness of the leg plate around the caster excluding this mounting hole becomes extremely thin, and the strength of the leg plate at that part and the caster to be mounted here are Not only is there a problem with the mounting strength, but there is also a problem with the stability of furniture such as chairs.

In addition, furniture such as a chair and a wagon table to which these casters are attached is brought into contact with a learning desk or other furniture in which the chair is housed when moving, or the moving furniture or the furniture. The storage desk and other furniture may be damaged.

[0005]

[Problems to be solved by the device]

 In view of the above points, the present invention can be easily and firmly attached to the lower surface of a narrow leg plate or the like as a caster to be attached to a chair, a wagon table, or the like. It is intended to provide an embedded caster with a protector that does not damage the furniture or other furniture even if it collides.

[0006]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the embedded caster with a protector according to the present invention has a wheel attached to the inside of the housing opened to the lower surface so as to be retractable from the lower surface opening, and a collar portion is formed on the lower surface and the side surface of the housing. In addition, the side surface of the casing serves as a protector protrusion projecting laterally from the collar portion, and the protector protrusion is provided in a mounting recess opened on a lower surface and a side surface provided on an object to be mounted such as furniture. Is attached in a state of protruding from the side surface of the mounted body.

[0007]

[Action]

 The embedded caster with a protector according to the present invention as described above fits a housing portion into a mounting recess provided in an attached object such as a chair for a learning desk or other furniture, and at the same time, It is attached by screwing the appropriate places of the flanges provided on the bottom and side surfaces of the body to the body to be attached. The furniture attached with the casters can be easily moved by the wheels protruding from the lower surface of the caster casing, and the protector projections protruding from the attached body to the side surface are different from those of the attached furniture. Prevents direct contact with furniture, etc. and prevents moving furniture and other furniture from being damaged by contact or collision with each other. In addition, when a person sits on a chair and the load is applied to the furniture, the wheels of the casters are housed in the housing and the lower surface of the furniture, etc. that is the object to be attached abuts the floor surface, etc. Does not move carelessly.

[0008]

【Example】

 Hereinafter, the present invention will be described in more detail with reference to the embodiments of the accompanying drawings.

The implantable caster 1 with a protector according to the present invention is mounted on the underside of a cross rail 4 or a leg plate that connects the lower ends of the front and rear legs 3 and 3 of a chair 2 as shown in FIG. 1, for example. It is attached. The caster 1 is made of synthetic resin or the like, and a wheel 11 is detachably attached to the inside of a casing 7 having a lower opening 5 through the lower opening 5 of the casing 7. Further, flanges 14 and 13 are formed on the lower surface and the side surface of the housing 7, and the side surface thereof is a protrusion 6 for a protector protruding laterally from the flange portion 13 as shown in FIGS. 5 and 7. Further, in the caster 1 of the illustrated example, mounting screw holes 15 and 16 are provided in the flange portions 14 and 13 of the lower surface and the side surface of the housing 7. In this caster 1, the wheels 11 are projected from the lower surface of the horizontal rail 4 into mounting recesses 12 formed in front and rear sides of the horizontal rail 4 of the chair 2 as an object to be mounted, the opening being formed in the lower surface and the side surface. At the same time, the protector projection 6 on the side surface is attached in a state of protruding from the side surface of the horizontal rail 4.

In the embodiment shown in the drawings, the rear end of the support frame 10 having a substantially gate-shaped cross section is rotatably mounted in the housing 7 by a rotary shaft 8 and is rotatable. The front end of the support frame 10 is elastically biased by the spring 9 wound around the support frame 10 so as to always rotate downward, and is fixed to the housing 7 through holes 17, 17 provided on both side surfaces of the support frame 10. The support frame 10 is mounted in the housing 7 with the rotation of the support frame 10 being restricted within a fixed range by inserting the rotation control shaft 18, and both ends of the support frame 10 are attached to the front end portion of the support frame 10 outside surface. The wheels 11 are mounted on the axles 19 which are projected and attached to the guide grooves 20, 21 in which the projecting ends of the wheels 19 projecting to the left and right of the support frame 10 are slidably fitted to the inner surfaces of both sides of the housing 7. By providing the wheel 11, the wheel 11 is attached to and retracted from the lower surface opening 5 of the housing 7.

To assemble the caster 1 configured as described above, as shown in FIG. 3, first, the support frame 10 to which the wheels 11 are attached is inserted from the lower surface opening 5 of the housing 7, and the rear side of the support frame 10 is inserted. A supporting frame 10 is rotatably mounted around the rotary shaft 8 by penetrating a rotary shaft 8 inserted from the side surface of the housing 7 at the end portion, and at the same time, a spring 9 is wound around the rotary shaft 8. The support frame 10 is attached so that the front end of the support frame 10 is rotated downward by the spring 9 about the rotation shaft 8 and the wheels 11 are projected to the lower surface of the housing 7. The rotation restricting shaft 18 is inserted to penetrate through the through holes 17, 17 provided on both sides of the support frame 10, and then fixed, whereby the rotation of the support frame 10 is restricted and the wheel 11 is mounted on the casing. It is attached so that it can be projected and retracted within a certain range from the lower surface opening 5 of the body 7.

The caster 1 assembled as described above has front and rear side rails 4 and 4 formed by connecting the front and rear legs 3 and 3 of the chair 2 to each other. Into the caster mounting recess 12 provided in the opening, the flange portion 14 on the lower surface of the housing 7 and the flange portion 13 around the protector projection 6 on the side surface are brought into contact with the lower surface and the side surface of the horizontal rail 4. Then, the wheels 8 are attached to the lower surface of the horizontal rail 4 and the protector projection 6 is mounted so as to project from the side surface of the horizontal rail 4, and the screws 22 are inserted into the screw holes 15 and 16 of the flange portions 13 and 14, respectively. It is fixed to the lower surface of the horizontal rail 4 by screwing 23. In this case, when the two casters 1, 1 are attached to the front and rear of the cross rail 4 of the chair 2 as shown in FIG. 2, the rotating shafts 8 and 8 of the respective casters 1 are arranged inside and It can be said that it is a desirable mounting state for the stability of the chair 2 that the wheels 11 and 11 are respectively arranged outside.

In the caster 1 according to the present invention as described above, the mounting recess 12 for mounting the caster 1 is opened on the lower surface and the side surface of the cross rail 4 of the chair 2, so that the mounting of the caster 1 on the chair 2 is performed. Work is easy. In addition, since the mounting recess 12 is provided on one side surface of the horizontal rail 4 as described above, and the caster 1 is mounted near the outside of the horizontal rail 4, the mounting rail 12 is mounted to the horizontal rail 4. 4 or even if the leg plate is thin, as in the case of a conventional caster that has a mounting hole drilled in the lower surface of the leg plate, etc. There is no problem that the thickness of the crosspiece becomes extremely thin and the strength of the crosspiece decreases. Moreover, in the case of this caster 1, since the brim portion 14 and the brim portion 13 provided on the lower surface and the side surface of the caster 1 are firmly attached in contact with the lower surface and the side surface of the horizontal rail 4, the horizontal rail of the caster 1 is attached. Mounting on 4 also has high strength. Further, since the caster 1 is attached to the outer side of the cross rail 4 as described above, the distance between the wheels 11 located on both sides of the chair 2 is increased, and the stability of the chair 2 is further improved. ..

The chair 2 to which the casters 1 are attached can be moved by the wheels 11 protruding from the lower surface of the horizontal rail 4, and the chair 2 can be moved by the protector protrusion 6 protruding from the side surface of the horizontal rail 4. When the chairs are stored under a desk or the like, it is possible to prevent the chair 2 from coming into direct contact with the furniture of the desk or the like and damaging each other. Further, in the example shown in the figure, the wheel 11 is attached to the chair 2 so as to be retractable from the opening 5 on the lower surface of the housing 7 while being elastically urged downward by the spring 9 about the rotating shaft 8. When a person sits down, the load causes the support frame 10 to rotate upward against the elastic force of the spring 9 so that the wheels 11 are retracted into the casing 7 and the collar portion 14 or the cross rail 4 on the lower surface of the casing 7 is directly attached. The chair 2 does not move carelessly because it abuts on the floor or the like. Also, when a person leaves the chair 2 and the load is removed, the chair 2 can be easily moved by the wheels 11 that project again to the lower surface of the cross rail 4 by the elastic force of the spring 9. Moreover, since the vertical movement of the wheel 11 in this case is performed by the pivotal movement of the support frame 10 around the pivot shaft 8, the wheel 11 is moved vertically as compared with the case where the support frame 10 is slid vertically. The vertical movement is extremely smooth.

Further, as in the embodiment of the illustrated example, when the collar portion 14 on the lower surface of the caster 1 is abutted against the lower surface of the horizontal rail 4 and the collar portion 14 is attached so as to project from the lower surface of the horizontal rail 4, When a person sits on the chair 2 and the wheels 11 are stored in the housing 7, the flange portion 14 comes into contact with the floor surface or the like. Therefore, especially in the case of a wooden floor such as a flooring, the flange portion 14 is used. The portion 14 serves as a protector on the lower surface of the horizontal crosspiece 4 to prevent the floor surface from being damaged, but the collar portion 14 on the lower surface of the housing 7 and the collar portion 13 on the side surface are located inside the lateral side 4 together with the housing 7. It may be embedded.

[0016]

[Effect of the device]

 As described above, the embedded caster with protector according to the present invention is mounted in the mounting recesses formed by opening the lower surface and the side surface of the body to be mounted such as the legs of the chair. As described above, the mounting is extremely simple as compared with the case of mounting in the mounting hole formed in the lower surface of the leg. Moreover, this mounting recess is provided by opening on the side surface of the mounted body, and the protector projection on the side surface of the caster is mounted so that it projects laterally from the mounted body. Even if the caster to which the caster is mounted is thin, the thickness of the mountable body excluding the mounting holes is extremely thin, as in the case of conventional casters. There is also no problem that the strength of the caster mounting part in the mounted body decreases. Moreover, in the case of this caster, since the flange portions provided on the lower surface and the side surface thereof are firmly attached to the lower surface and the side surface of the mounted body, the caster has a large mounting strength. Furthermore, by mounting the casters on the outer side of the mounted body, the distance between the casters mounted on both sides of the mounted body becomes larger, and the stability of furniture or the like with the casters mounted is further improved.

The furniture or the like to which the casters are attached can be easily moved by the wheels of the casters protruding from the lower surface of the casters, and the protector protrusions integrally provided on the side surfaces of the casters can be used to move the furniture. Even if it comes in contact with other furniture when moving, it will not be damaged. Also, when a person sits on the chair and a load is applied, as in the case where the caster is attached to the chair, the wheels of the caster are housed in the housing, and the chair does not move carelessly and should be used safely. Can be done.

[Brief description of drawings]

FIG. 1 is a perspective view of a chair with casters according to the present invention seen from below.

FIG. 2 is a side view of a caster mounting portion of the chair.

FIG. 3 is an exploded perspective view of a caster.

FIG. 4 is an enlarged front view of a caster mounting portion.

FIG. 5 is an enlarged side view of a caster mounting portion.

FIG. 6 is an enlarged bottom view of a caster mounting portion.

FIG. 7 is a vertical cross-sectional view of the caster viewed from the back side.

FIG. 8 is a vertical cross-sectional view of the caster viewed from the side.

FIG. 9 is a cross-sectional plan view of a caster.

FIG. 10 is a vertical cross-sectional view of the caster with the wheels retracted as seen from the rear side.

[Explanation of symbols]

1 Caster 2 Chair 3 Leg 4 Side Rail 5 Opening 6 Projector Projection 7 Housing 8 Rotating Shaft 9 Spring 10 Support Frame 11 Wheel 12 Mounting Recess 13 Collar 14 Collar 15 Screw Hole 16 Screw Hole 17 Through Hole 18 Rotation restriction shaft 19 Axle 20 Guide groove 21 Guide groove 22 Screw 23 Screw

Claims (1)

[Scope of utility model registration request] 1. A wheel is attached to and retractable from a lower surface opening inside a housing opened to a lower surface, a flange is formed on a lower surface and a side surface of the housing, and a side surface of the housing is lateral from the flange portion. It becomes a protruding part for the protector, and in the mounting recess that opens on the lower surface and side surface provided on the mounted object such as furniture,
An embedded caster with a protector, which is attached in a state where the protector projection is projected from the side surface of the mounted body.