JPH0450161Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to an improvement of a movable caster that is attached to the end of a leg of furniture.

(Prior art) In this type of swivel caster, since the ground roller is pivotally supported by its support, there is a directional difference in the rotatable direction of the ground roller. To compensate for this, the ground roller is supported. A rotatable support shaft mechanism connects the body and the attachment part fixed to the leg end of the furniture, and while rotating the support body itself, the rotatable direction of the ground roller and the movement direction of the furniture are adjusted. Moreover, when moving furniture by hand-pushing, etc., the rotatable direction of the grounding roller, that is, the direction of the support, is automatically set in the direction of movement (direction of pushing operation). In order to correct the problem, the fulcrum of the attachment part is eccentric to the fulcrum of the grounding roller of the support.

Therefore, although furniture with swivel casters can be moved freely and easily without being restricted in its direction of movement, it is necessary to take measures to fix it at its installation position.

As a means for fixing the installation position of a conventional swivel caster, a mechanism is known in which the support body is laid down together with a grounding roller.

(Problems to be Solved by the Invention) However, the above-mentioned swivel caster has a relatively complicated fixing mechanism when lying on its side, which requires time and effort to manufacture, resulting in high costs, and is prone to failure. There is.

The object of the present invention is to provide a swivel caster that can eliminate these problems.

(Means for Solving the Problems) The present invention has a substrate 1 and a substrate 1 as shown in the figure.
It is composed of a rectangular cylindrical support body 2 with an open bottom end that rotatably supports a grounding roller 14.

A support shaft 3 attached to the lower end of the leg is rotatably supported at an eccentric position on the board surface of the board 1, and a disc-shaped fitting seat 7 is provided at the lower end of the support shaft 3 that protrudes toward the bottom surface of the board 1. A flange edge 4 is provided around the substrate 1, and a vertically oriented elongated hole 6 is provided in a sleeve plate 5 that hangs down from the flange edge 4 on one side of the substrate 1.

The top wall of the support body 2 and the first and second walls facing each other
The side wall is formed in a shape and size to fit inside the flange 4, and a third side wall that connects to the first and second side walls and contacts and opposes the sleeve plate 5 has a screw hole 10 facing the long groove hole 6. The support body 2 is coupled to the substrate 1 by passing a screw 11 from the outside of the sleeve plate 5 through the long slot 6 and screwing it into the screw hole 10 so that it can move forward and backward.

Furthermore, the top wall of the support body 2, the first and second
The side wall has a circular fitting hole 8 that fits with the disc-shaped fitting seat 7.
are provided for each.

(Function) By fixing the support body 2 to the base plate 1 in the direction in which the furniture moves, the base plate 1 and the support body 2 are integrated at the rotating support shaft portion with the support shaft 3 attached to the lower end of the leg. Swiveling and grounding roller 14 on support 2
The rotation allows furniture to be moved freely.

In order to obtain stability at the installation position after the furniture has been moved, the support body 2 that pivotally supports the grounding roller 14 can be laid down sideways. That is, by releasing the fixation of the support body 2 to the substrate 1 at the installation position, the support body 2 can be laid down horizontally, and the grounding roller 14 is separated from the floor surface and placed in the horizontal position, and the first side wall or the first side wall of the support body 2 The second side wall is grounded. Therefore,
Since the rotatable grounding roller 14 is removed and contacts the floor surface with the side wall having a large grounding area, a stable installation state can be obtained similar to when the lower ends of the legs are directly grounded.

(Example) The present invention will be explained based on the illustrated example.
It is as follows.

FIG. 1 is an exploded perspective view of the caster. The caster is composed of a substrate 1 and a rectangular cylindrical support 2 independent of the substrate 1 and having an open bottom end.

The board 1 rotatably supports a support shaft 3 as a lower leg attachment part at an eccentric position on the board surface of the board 1, and a disc-shaped fitting seat 7 is provided at the lower end of the support shaft 3 protruding toward the lower surface of the board surface. A flange 4 is provided around the substrate 1, and a vertically directed long groove hole 6 is provided in a sleeve plate 5 hanging from the flange 4 on one side of the substrate 1.

The support body 2 is formed in such a shape and size that a top wall and first and second side walls facing each other fit inside the flange 4. A screw hole 10 facing the elongated hole 6 is provided in a third side wall which is connected to the first and second side walls and is in contact with and faces the sleeve plate 5. The support body 2 is coupled to the substrate 1 by threading the screw 11 into the screw hole 10 from the outside of the sleeve plate 5 through the long slot 6 so that the screw 11 can move forward and backward. Disk-shaped fitting seats 7 are provided on the plate surface of the substrate 1 and at predetermined positions on the first side wall and the second side wall.
A circular fitting hole 8 is provided for fitting.

A non-slip surface 9 is formed on the first and second side walls of the support body 2. A bearing head 12 and a step surface 13 are provided on the inner wall facing the lower end open surface of the support body 2, and the support shaft 15 of the grounding roller 14 is fitted into the bearing head 12, and a presser plate 16 is placed on the step surface 13 and screws are inserted. 17
By fixing this, the grounding roller 14 is rotatably supported on the support body 2.

FIG. 2 is an exploded perspective view showing a portion of the substrate 1 that supports the support shaft 3. As shown in FIG. A sleeve 19 with a lower flange made of synthetic resin is fitted into the shaft hole 18 drilled in the plate surface of the substrate 1, and a lower flange 3a of the support shaft 3 is inserted into the sleeve 19 with a receiving washer 20 interposed therebetween. is inserted, the fitting seat 7 is interposed from the inner surface of the substrate 1, and the screw 22 is screwed into the screw hole 21 provided at the shaft end of the support shaft 3, so that the support shaft 3 is rotatably mounted. . Instead of the illustrated configuration of the attachment part in which the support shaft 3 is directly screwed into the lower end of the leg, a receiving flange 3a of the support shaft 3 is used.
An attachment structure may also be adopted in which the part is expanded widely and then screwed to the lower end of the leg.

Furthermore, FIGS. 6 and 7 are an exploded perspective view and an overall assembled view showing other embodiments of the shaft mounting structure of the support shaft 3. By using the upper flanged sleeve 19a instead of the lower flanged sleeve 19, the receiving washer 20 is omitted, and the receiving flange 3 of the support shaft 3 is
A can be brought into direct contact with the upper flange surface of the sleeve 19a, and assembled as shown in FIG.

According to the embodiment having such a configuration, the third
As shown in the figure and the fourth figure, after fitting the support 2 to the flange 4 of the substrate 1 and positioning the support 2 in the direction in which the roller 14 comes into contact with the ground, the support 2 does not fall off from the flange 4. Tighten the screw 11 to the sleeve plate 5.
The position is fixed by bringing the first or second side wall of the support body 2 into contact with the support body 2 . Thereby, the substrate 1 and the support body 2 are integrated, and the caster functions in exactly the same way as a normal swivel caster.

From this state, once loosen the screw 11, use this as a guide pin to place the support body 2 in a state where it can be pushed down along the longitudinal groove 6 of the sleeve plate 5, and lift the furniture to release the leg load. Since the support body 2 comes out from the flange edge 4 under its own weight, the support body 2 is laid down in this state. In this state, the support body 2 is again fitted inside the flange 4 of the substrate 1, and
By fitting the disc-shaped fitting seat 7 into the circular fitting hole 8 of the first or second side wall of the support 2, the grounding roller 14 is oriented horizontally with respect to the substrate 1, and the support 2
The installation state is such that the non-slip surface 9 of the side wall is in contact with the ground.

In this state, the support 2 is in a stable state with a furniture load applied thereto, and the disc-shaped fitting seat 7 is fitted into the circular fitting hole 8 in the side wall of the support 2. Therefore, there is no fear that the support body 2 will shift or come off from the substrate 1, and there is no need to intentionally tighten the screws 11. When moving the support body 2 from this installation position again, the caster function is restored by changing the direction of the support body 2 relative to the board 1 in the opposite manner to the above-mentioned tipping operation and bringing the grounding roller 14 of the support body 2 back into contact with the ground. furniture can be moved freely.

(Effects of the invention) As described above, according to the caster according to the invention, the base plate 1 that rotatably supports the spindle 3 and the support 2 that rotatably supports the grounding roller 14 are mutually connected to each other. The support body 2 is configured to be independently configured so that the support body 2 can be selectively mounted in both a moving position where the grounding roller 14 is in contact with the substrate 1 and an installation position where the support body 2 is laid down from this position. be. Therefore, it is possible to move the attached furniture by fully utilizing the caster function, and when the support body 2 is in the installed position where it is laid down, the ground roller 14 is separated from the floor surface, and the support body has a large ground contact area. Since it is supported by the side wall of the fixed leg, extremely stable installation using the fixed legs is possible at this installation position, much the same as when the leg ends are directly grounded on the floor. Moreover, since the ground contact area is wide, there is little risk of damaging the floor surface or leaving footprints.

In particular, according to the caster according to the present invention, when the screw 11 is passed through the long groove hole 6 and the screw hole 10, the grounding roller 14 is in contact with the ground, or the support body 2 is lying sideways and the grounding roller 14 is not in contact with the ground. However, since the circular fitting seat 7 is configured to fit into the circular fitting hole 8 in the side wall of the support body 2, although the structure is simple, the substrate 1 and the support body 2 are integrated. It is possible to form a stable and stable bond, and
Due to its simple structure, it is easy to manufacture and operate.
Breakdowns are rare.

[Brief explanation of the drawing]

Fig. 1 is an exploded perspective view showing one embodiment of the caster of the present invention, Fig. 2 is an exploded perspective view showing an example of the shaft mounting structure of the lower leg attachment part of the caster of the invention, and Figs. 3 and 4 are An external view and a partially vertical side view showing the moving position of the caster of the present invention, Fig. 5 is an external view showing the installation position of the caster of the present invention, and Figs. 6 and 7 show the legs of the caster of the present invention. FIG. 7 is an exploded perspective view and an overall assembled vertical cross-sectional view showing another example of the lower end shaft mounting structure. 1...Substrate, 2...Support, 14...Grounding roller.

Claims (1)

[Claims for Utility Model Registration] A substrate 1 and a grounding roller 14 independent of the substrate 1.
A rectangular cylindrical support body 2 with an open bottom end that rotatably supports the
A support shaft 3 attached to the lower end of the leg is rotatably supported at an eccentric position on the board surface of the board 1, and a circular plate is attached to the lower end of the support shaft 3 that protrudes toward the bottom surface of the board 1. Shape fitting seat 7
A flange 4 is provided around the substrate 1, and a vertically directed long slot 6 is provided in a sleeve plate 5 hanging from the flange 4 on one side of the substrate 1. The first and second side walls are formed in a shape and size to fit inside the flange 4, and a third side wall that is connected to the first and second side walls and faces the sleeve plate 5 is provided with a long groove hole 6. Opposing screw holes 10 are provided, and a screw 11 is passed from the outside of the sleeve plate 5 through the long slot 6 and screwed into the screw hole 10 so as to be able to move forward and backward, thereby coupling the support 2 to the substrate 1, and further, the support 2, the first and second ceiling walls;
The side wall has a circular fitting hole 8 that fits with the disk-shaped fitting seat 7.
A swivel caster characterized by being provided with each.