JPH0240832Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to an improvement of a device for fixing a chair to the floor surface, and more specifically, it is capable of fixing the position and removing it with a single touch, and also ensures that the position is fixed. This invention relates to the provision of a device for fixing the legs of a chair to the floor.

Conventionally, as a device for fixing a chair to a floor surface, a suitable mounting part provided on the chair is generally fixed integrally with an anchor buried in the floor surface using screwing means or the like.
They are difficult to remove, and even if they are removable, their position cannot be fixed securely.

This invention was devised in view of the above-mentioned situation, and its gist is that a substantially U-shaped locking rod with an operating part and a locking part on the upper and lower sides is provided at the lower end of the chair leg. When the locking rod is pushed down and the operation part is engaged with the horizontal groove of the guide member, the upper edge of the locking part is buried in the floor surface. The point is that it is set in a relationship such that it is in contact with the upper surface.

Hereinafter, details of the present invention will be explained with reference to embodiments shown in the accompanying drawings. In the figure, A indicates the chair legs, B indicates the locking rod, C indicates the guide member, and D indicates the fixing member. In this embodiment, the locking rod B is formed by bending the upper and lower ends of a straight rod portion 1 using a round rod toward the same side to form the operating portion 2 and the locking portion 3. Guide member C with upper and lower openings for internally setting this locking rod B
is fixed directly to the lower end of the chair leg A, or is formed integrally with the end cap 4 as in the embodiment, and when the fixing device is not in use, a notch 5 is provided at the upper end of one side as shown in FIG. Operation part 2 in notch 5
As shown in FIG. 3A, the locking portion 3 is positioned below the guide member C, and the straight rod portion 1 is held inside in a freely moving state. The front surface of the guide member C has a vertical opening 6 continuous from the upper surface opening 6 with a width that allows the operation part 2 to move downward in order to push down the locking rod B when fixing the chair leg A, and the lower end The engagement lateral groove 7 of the operating portion 2 is formed by bending the opening.

Further, in this embodiment, a spacer part 8' is provided which is detachably attached to the inside of the guide member C to smoothly guide the movement of the locking rod B, and is connected to the upper edge of the spacer part and hangs down. For example, a cover member 8 integrally formed with a synthetic resin is used as a cover part 8'' for covering the outer surface of the guide member.Thereby, in the state shown in FIG. 3A, that is, when this device is not used, the locking rod B
This further reliably prevents the device from deviating from the guide member C, and improves the appearance performance. When using this device, the cover member 8 is pulled upward to move the locking rod B, as shown in FIG. By attaching the cover member 8 again after the fixing work is completed, it is possible to reliably prevent the operation part 2 from slipping from the horizontal groove 7 and prevent the chair leg A from being inadvertently released from the fixed state. The appearance performance can also be improved. Further, it is also possible to consider a configuration in which the cover member has a spacer portion and a cover portion as separate bodies, and the spacer portion is fixed when the device is assembled, and only the cover portion is detachable. The fixing member D that fixes the chair leg A by locking the locking portion 3 of the locking rod B has its upper surface at least substantially flush with the floor surface 9, preferably one step lower than the floor surface 9 as shown. The cover is concealed by an inset floor cover 10 shown by a two-dot chain line, which is embedded and fixed in advance in the floor surface 9, and the plate is bent and faced inward at a predetermined distance. A through hole 13 having a U-shaped cross section and forming a cavity 11 in which the locking part 3 can be accommodated and rotated, and in the upper plate 12, the locking part 3 can be inserted into the cavity 11 from above. is installed. As for these arrangements, when the operation part 2 is engaged with the lower edge of the lateral groove 7 of the guide member C, at least the upper edge of the tip of the locking part 3, preferably the upper edge of the locking part 3 for stable fixation. Blank space 11
It is set in a positional relationship such that it comes into contact with the lower surface of the upper plate 12, which is the upper surface.

Therefore, in order to fix the chair leg A to the floor surface 9 using this device, first place the chair leg A at a predetermined position on the floor surface 9 where the fixing member D is provided, as shown in FIG. Lift the part 2 and press down the locking rod B to the lower end of the vertical opening 6 on the front surface of the guide member C as shown in FIG.
Position within 1. Then, as shown in FIG. The upper edge of the distal end of the locking part 3 is in contact with the lower surface of the upper plate 12, and the lower edge of the operating part 2 is in engagement with and in contact with the lateral groove 7, so that the upper and lower positions of the operating part 2 can be fixed with respect to each other. It is something.

FIG. 4 shows an example in which the locking part is formed into an L-shaped locking part 3' having a downward protrusion 14 by bending the tip downward to further ensure the position fixing function. A fitting groove 15 corresponding to the movement of the lower protrusion 14 as the locking portion 3' rotates is formed on the upper surface of the lower plate 16, which is the lower surface of the space 11 of the fixing member. Although not shown, it may be considered that if the upper surface of the space is sloped slightly downward from the edge of the through hole, an attractive force will be generated as the locking portion rotates, thereby creating a fastened state.

Although FIG. 1 shows an example in which the main fixing devices are provided on both the front and rear legs, the locations and number of attachment devices may be selected as appropriate.

The device for fixing chair legs to the floor of the present invention as described above is a cylindrical guide having a substantially U-shaped locking rod at the lower end of the chair leg, which has an operating part and a locking part on the upper and lower sides. The upper edge of the locking portion comes into contact with the upper surface of the hollow space of the fixed member buried in the floor surface when the locking rod is pushed down and the operating section is engaged with the horizontal groove of the guide member. Since the position of the chair legs can be fixed, after placing the chair in a predetermined position, push down the locking rod to position the lower locking part within the fixing member, and then press the upper operating part. This can be easily done by simply turning the locking rod into engagement with the horizontal groove of the guide member, and when removing the chair, the chair can be easily removed by simply performing the reverse operation described above and pulling the locking rod upward.

In addition, a notch is provided at the upper end of one side of the guide member to hold the operating part and the locking rod can be easily attached to the guide member, so it can be used as a movable chair instead of a fixed one. This device does not interfere with its functions and can be used as a dual-purpose chair without any treatment.

Furthermore, if the chair legs are made detachable from the floor and the chair is not placed, there will be no protrusions on the floor, which is preferable from a safety and practical standpoint when using the chair on the floor.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing an example of a chair fixed by applying the present invention, Fig. 2 is an explanatory perspective view of the lower end of the chair leg, and Fig. 3 is a partially sectional explanatory view showing a method of fixing the chair leg. FIG. 4 is an explanatory diagram of another embodiment. A... Chair leg, B... Locking rod, C... Guide member, D... Fixing member, 1... Straight rod portion, 2... Operation portion, 3, 3'... Locking portion, 4... ...end cap,
5...Notch, 6...Vertical opening, 7...Horizontal groove, 8...
Cover member, 8'...Spacer part, 8''...Cover part, 9...Floor surface, 10...Floor surface cover, 11...
...Vacancy, 12...Top plate, 13...Through hole, 14...
... lower projection, 15 ... fitting groove, 16 ... lower plate.

Claims (1)

[Scope of Claim for Utility Model Registration] 1. A substantially U-shaped locking rod having an operating part and a locking part on the upper and lower sides of the straight rod, and a tube with openings on the top and bottom surfaces in which the straight rod is installed in a freely movable state. The body is attached to the lower end of the chair leg,
A notch capable of holding the operating section is formed on the upper edge of one side, a vertical opening with a width through which the operating section can move is formed in the front surface continuous with the upper opening, and the other side is continuous with the lower edge of the vertical opening. a guide member for the locking rod having a transverse groove into which the operating portion can be engaged; A fixing device for fixing a chair leg to a floor surface, comprising: a fixing member having a hollow space in which the locking part can rotate; 2. Registration of a utility model in which at least the upper edge of the tip of the locking portion is set in a positional relationship such that when the operating portion of the locking rod is positioned at the lower end of the vertical opening of the guide member, at least the upper edge of the tip of the locking portion can come into contact with the upper surface of the cavity of the fixing member. A device for fixing chair legs to a floor surface according to claim 1.