JP3212053U - Chair fixing structure - Google Patents

Abstract

The present invention provides a chair fixing structure for easily detachably fixing a chair to a floor in a space-saving manner. A chair fixing structure 1 for fixing a chair to a floor F includes a base member 10 having a flange portion 11 fixed to the floor F, a hollow cylindrical portion 15 extending upward from the flange portion 11, and a cylinder. A columnar support portion 30 having a columnar insertion portion 32 that is coaxially inserted into the portion 15. The cylindrical portion 15 has a cylindrical portion through-hole 16 that passes through the wall portion of the cylindrical portion 15. The columnar insertion portion 32 has a columnar insertion portion through-hole 33 that penetrates the side surface of the columnar insertion portion 32. In the installed state in which the columnar insertion portion 32 is inserted into the cylindrical portion 15, the cylindrical portion through hole 16 and the columnar insertion portion through hole 33 are aligned so that the insertion pin or the insertion bolt 35 is inserted. [Selection] Figure 4

Description

  The present invention relates to a chair fixing structure for detachably fixing a chair to a floor.

  For example, at amusement halls such as pachinko, pachislot, games, etc., to make it easier to change the interior of the store, to replace an old chair with a new one, and to allow a wheelchair to enter if the player is a wheelchair user In many cases, a chair that can be detachably fixed to the floor is used. For example, a chair fixing structure described in Patent Document 1 has been proposed.

  Patent Literature 1 is a chair fixing structure for fixing a chair to a floor, and includes a flange portion fixed to the floor, a base member having a hollow cylinder portion extending upward from the flange portion, and an outer periphery of the cylinder portion. A first annular member provided on the outer periphery, a fastening member provided on the outer periphery of the first annular member, a columnar support portion that is inserted into the cylindrical portion and places a chair thereon, and an outer periphery of the columnar support portion. It is provided, The 2nd annular member which has a to-be-fastened part which a fastening member fastens so that attachment or detachment is possible, It is a fixing structure of a chair characterized by the above-mentioned.

  However, the position of the annular member in the vertical direction is formed at a position away from the flange portion (floor surface), and the annular member has a flange shape extending outward, so that a larger space than the cylindrical portion is required.

JP, 2006-106805, A

  Therefore, the present invention has been made in view of the above circumstances, and an object of the present invention is to provide a chair fixing structure for easily fixing the chair to the floor in a space-saving manner.

  As a result of intensive studies, the inventor obtained the following ideas.

(1) A chair fixing structure for fixing a chair to a floor, the base member having a flange portion fixed to the floor and a hollow cylindrical portion extending upward from the flange portion, and coaxial with the cylindrical portion A columnar support portion having a columnar insertion portion to be inserted and a placement portion for placing the chair on the upper portion, and the cylindrical portion has a cylindrical portion through-hole penetrating the wall portion of the cylindrical portion. The columnar insertion portion has a columnar insertion portion through-hole penetrating the side surface of the columnar insertion portion, and an insertion pin or an insertion bolt is inserted when the columnar insertion portion is inserted into the cylindrical portion. Thus, the chair fixing structure in which the cylindrical portion through hole and the columnar insertion portion through hole coincide.

(2) The chair fixing structure according to (1), wherein, in the installation state, an end of the columnar insertion portion is in contact with an upper surface of a step portion corresponding to a bottom portion of the cylindrical portion.

(3) The distance between the center of the cylindrical part through-hole and the upper surface of the step part corresponding to the bottom part of the cylindrical part in the vertical direction is in the range of 5 mm to 15 mm, (1) or (2 ) Chair fixing structure.

(4) The chair fixing structure according to any one of (1) to (3), wherein the columnar insertion portion is a clearance fit with respect to the cylindrical portion.

  According to the present invention, in the installed state, the cylindrical portion through hole and the columnar insertion portion through hole coincide with each other. Thus, it is possible to provide a chair fixing structure that can easily fix the chair to the floor in a detachable manner.

It is a perspective view of one embodiment of a chair fixing structure according to the present invention. (A) It is a perspective view of the base member of the chair fixing structure shown in FIG. (B) It is a vertical fragmentary sectional view of (a). It is a vertical fragmentary sectional view of the columnar support part of the chair fixing structure shown in FIG. It is a vertical fragmentary sectional view of the chair fixing structure shown in FIG.

  DESCRIPTION OF EMBODIMENTS Hereinafter, a mode for carrying out the present invention (hereinafter referred to as an embodiment) will be described in detail with reference to the accompanying drawings. Note that the same number is assigned to the same element throughout the description of the embodiment.

A chair fixing structure 1 according to the present invention will be described with reference to FIGS.
As shown in FIG. 1, the chair fixing structure 1 is a fixing structure for fixing the chair C to the floor F. The chair fixing structure 1 includes a base member 10 and a columnar support portion 30. In the present embodiment, in the installed state in which the columnar insertion portion 32 of the columnar support portion 30 is inserted into the cylindrical portion 15 of the base member 10, a rod-shaped insertion stop member P such as an insertion pin or insertion bolt 35 and a nut 36. The chair C is fixed to the floor F by inserting.

  The base member 10 includes a flange portion 11 that is fixed to the floor F and a hollow cylindrical portion 15 that extends upward from the flange portion 11. The base member 10 is fixed to the floor F with mounting bolts B in mounting holes 11 a formed in the flange portion 11. The columnar support portion 30 has a placement portion 47 on which the chair C is placed. The mounting portion 47 of the columnar support portion 30 is inserted into the mounting portion of the chair C, so that the chair C is fixed to the columnar support portion 30.

  As shown in FIG. 2, the flange part 11 is comprised from the base part 11b which earth | grounds to the floor F, and the step part 11c which rose in the center part. The base portion 11b and the step portion 11c are formed by pressing a single disk with a press or the like so that the center back surface is recessed so that the surface is convex, and between the step portion 11c and the floor F, A gap 13 is secured. The presence or absence and shape of the stepped portion 11c can be selected in consideration of the strength, material, design, etc. required for the base member 10.

  The base 11b is provided with a plurality of mounting holes 11a through which mounting members (see FIG. 4) such as mounting bolts B for fixing the base member 10 to the floor F are inserted. The plurality of mounting holes 11a are provided in the vicinity of the periphery of the base portion 11b along the thickness direction (vertical direction) of the base portion 11b. The base member 10 is fixed to the floor F by inserting a plurality of mounting bolts B through the plurality of mounting holes 11a and screwing them into the floor F, respectively. In consideration of the fact that the user of the chair C puts his / her weight on the backrest, the mounting hole 11a is provided with one on the front side of the rear as viewed from the user, and a total of five mounting holes 11a including four arranged symmetrically. It is preferable to provide the mounting hole 11a. Thereby, it is possible to prevent the base member 10 from wobbling with respect to the user's weight shift or sitting away.

  In the center of the flange portion 11, a hollow cylindrical portion 15 extends upward from the step portion 11c. The flange part 11 and the cylindrical part 15 are integrally formed by welding, for example. Although an example in which both the inner wall surface 17 and the outer wall surface 18 of the hollow cylindrical portion 15 are upright is shown, the inner wall surface 17 may not be upright but may be formed in a tapered shape. When the inner wall surface 17 is tapered, the columnar insertion portion 32 of the columnar support portion 30 that is coaxially inserted into the cylindrical portion 15 also has a corresponding tapered shape.

  Further, streaky irregularities may be formed on at least one of the inner wall surface 17 of the cylindrical portion 15 and the outer wall surface of the columnar insertion portion 32 of the columnar support portion 30 in order to prevent their adhesion.

  The cylindrical portion 15 has a cylindrical portion through hole 16 that penetrates the inner wall surface 17 and the outer wall surface 18 of the wall portion of the cylindrical portion 15. The distance a between the center 16a of the cylindrical portion through-hole 16 and the upper surface 12 of the step portion 11c corresponding to the bottom portion of the cylindrical portion 15 in the vertical direction is preferably in the range of 5 mm to 15 mm. Moreover, it is preferable that the diameter of the cylindrical part through-hole 16 exists in the range of 3 mm-10 mm.

  As shown in FIG. 3, the columnar support portion 30 includes a guide portion 31 and a slide portion 44 and has a configuration of a detachable gas pole. The guide portion 31 has a cylindrical shape, and a shaft-like slide portion 44 slides linearly therein.

  The guide portion 31 has a contact surface 31a on the upper end side that slidably contacts the outer peripheral surface of the slide portion 44. The lower end portion outside the guide portion 31 is a columnar insertion portion 32 that is coaxially inserted into the cylindrical portion 15, and the upper end portion is a placement portion 47 on which the chair C is placed. A slide shaft support portion 34 is formed on the lower side inside the guide portion 31. The outer diameter of the columnar insertion portion 32 is preferably a clearance fit with respect to the inner diameter of the cylindrical portion 15.

  The slide portion 44 has a slide shaft 41 that extends and contracts while sliding from a bush 43 attached to the lower side of the slide portion 44, and the lower end portion of the slide shaft 41 is interposed via a bearing 42. It is attached to the sliding shaft support part 34.

  The placement portion 47 of the slide portion 44 is attached to the chair C together with the fitting member 48. The slide part 44 is provided inside the guide part 31 so as to slide in the vertical direction with respect to the guide part 31. As the slide part 44 slides in the vertical direction with respect to the guide part 31, an elevating mechanism for elevating the chair C is configured. The columnar insertion portion 32 has a columnar insertion portion through-hole 33 that penetrates the side surface of the columnar insertion portion 32. The diameter of the columnar insertion portion through hole 33 is preferably in the range of 3 mm to 10 mm, and more preferably the same as the diameter of the cylindrical portion through hole 16.

Next, the chair fixing structure 1 in which the columnar support portion 30 is attached to the base member 10 will be described.
As shown in FIG. 4, the columnar insertion part 32 is inserted into the cylindrical part 15 so that the cylindrical part through-hole 16 and the columnar insertion part through-hole 33 coincide with each other, and the chair fixing structure 1 in the installed state is obtained. At this time, since the outer diameter of the columnar insertion portion 32 is a clearance fit with respect to the inner diameter of the cylindrical portion 15, the columnar insertion portion 32 can be easily and directly inserted into the cylindrical portion 15.

  Accordingly, the insertion bolt 35 can be inserted into the cylindrical portion through hole 16 and the columnar insertion portion through hole 33. The nut 36 is screwed into the tip of the insertion bolt 35 that is extended from the cylindrical portion through-hole 16 and the columnar insertion portion through-hole 33, whereby the columnar insertion portion 32 is attached to the cylindrical portion 15 to be installed. Thereby, the columnar insertion portion 32 does not come off from the cylindrical portion 15, and the columnar insertion portion 32 does not rotate with respect to the cylindrical portion 15.

  At this time, the cylindrical portion through hole 16 and the columnar insertion portion through hole 33 are positioned below the lower end portion of the slide shaft 41 of the slide portion 44, so that the insertion bolt 35 contacts the slide portion 44. Therefore, the insertion bolt 35 can be inserted smoothly.

  Further, the end portion of the columnar insertion portion 32 is in contact with the upper surface 12 of the step portion 11 c corresponding to the bottom portion of the cylindrical portion 15. Thereby, since there is a gap 13 between the step portion 11c and the floor F, the step portion 11c slightly elastically deforms the load when the user sits on the chair C, thereby reducing the impact. be able to.

  Thus, in this embodiment, since the cylindrical part through-hole 16 and the columnar insertion part through-hole 33 coincide, the insertion stopper member P such as the insertion pin or the insertion bolt 35 is connected to the cylindrical part through-hole 16 and the columnar insertion part. The chair C can be easily fixed to the floor F in a space-saving manner simply by being inserted into the through hole 33. Further, since the outer diameter of the columnar insertion portion 32 is a clearance fit with respect to the inner diameter of the cylindrical portion 15, the columnar insertion portion 32 can be easily and directly inserted into the cylindrical portion 15.

  As mentioned above, although this invention was demonstrated using embodiment, it cannot be overemphasized that the technical scope of this invention is not limited to the range as described in the said embodiment. It will be apparent to those skilled in the art that various modifications or improvements can be added to the above embodiment. In addition, it is apparent from the description of the claims of the utility model registration that embodiments with such changes or improvements can be included in the technical scope of the present invention.

B Mounting bolt C Chair F Floor P Insertion stop member 1 Chair fixing structure 10 Base member 11 Flange portion 11a Flange portion mounting hole 11b Flange portion base portion 11c Flange portion step portion 12 Flange portion step surface 13 Clearance 15 Cylinder Part 16 Cylindrical part through-hole 16a Center part of cylindrical part through-hole 17 Inner wall surface 18 Outer wall surface 30 Columnar support part 31 Guide part 31a Contact surface 32 Cylindrical insertion part 33 Cylindrical insertion part through-hole 34 Sliding shaft support part 35 Insertion bolt 36 Nut 41 Slide shaft 42 Bearing 43 Bush 44 Slide portion 47 Placement portion 48 Fitting member

Claims (4)

A chair fixing structure for fixing the chair to the floor,
A base member having a flange portion fixed to the floor and a hollow cylindrical portion extending upward from the flange portion;
A columnar support portion having a columnar insertion portion that is coaxially inserted into the cylindrical portion and a placement portion that places the chair on the upper portion;
The cylindrical part has a cylindrical part through-hole penetrating the wall part of the cylindrical part,
The columnar insertion portion has a columnar insertion portion through-hole penetrating a side surface of the columnar insertion portion,
The chair fixing structure in which the cylindrical portion through hole and the column insertion portion through hole are aligned so that an insertion pin or an insertion bolt is inserted in the installation state in which the column insertion portion is inserted into the cylindrical portion.   2. The chair fixing structure according to claim 1, wherein, in the installed state, an end portion of the columnar insertion portion is in contact with an upper surface of a step portion corresponding to a bottom portion of the cylindrical portion.   The chair according to claim 1 or 2, wherein a distance between a center of the cylindrical portion through hole and an upper surface of a step portion corresponding to a bottom portion of the cylindrical portion in a vertical direction is in a range of 5 mm to 15 mm. Fixed structure.   The chair fixing structure according to any one of claims 1 to 3, wherein the columnar insertion portion is a clearance fit with respect to the cylindrical portion.

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