JP2010131246A - Armchair - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an armchair which has armrest members fixed to both sides of a seat plate with a fixing bracket for each without reducing the number of horizontal ribs and a mechanism for enabling easy and secure installation of the fixing brackets. <P>SOLUTION: A positioning rib 22a has a stage part 24a on the top surface and a projecting part (engaged part) 24 is formed so that a seat plate 20 may become higher in the direction of the outer periphery and the upper wall 34 of a fixing bracket 30 can be close contact with the lower top surface of the positioning rib 22a. Furthermore, a cylindrical hole 25 is arranged in a location corresponding to the bracket mounting hole 37 of the upper wall 34 in the positioning rib 22a. Then, the fixing bracket 30 is arranged across the positioning rib 22a prepared in the top surface of the seat plate 20 and a slit 38 (engaging part) prepared in the top wall 34 of the fixing bracket 30 fits into the positioning rib 22a, then, the fixing bracket 30 is positioned. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a chair with an armrest provided with armrest members on both sides of a seat plate of the chair.

Conventionally, in order to attach armrest members to both sides of a seat plate, a plurality of fastening pieces with a minimum size are attached to a plurality of receiving portions formed from vertical ribs and lateral ribs provided on the upper surface of the seat plate. There is known an armrest mounting structure for a chair that accommodates and positions the fastening pieces in the front-rear and left-right directions by means of vertical ribs and horizontal ribs in the accommodating portion and to which an armrest member is fixed.
JP 2008-142208 A

  However, in the armrest mounting structure of the chair described in the above-mentioned patent document, a fastening piece (fixing bracket) is formed in a necessary minimum size in order to reduce material costs. ) Is required to have a receiving portion of a size that can accommodate a fastening piece (fixing bracket). In order to increase the fixing strength of the armrest, there is a risk that the mounting may be unstable with only one fastening piece (fixing bracket). Tightening pieces (fixing brackets) had to be used. Therefore, there is a problem that the labor for mounting the armrest member increases.

  Further, when the minimum fastening pieces (fixing brackets) are not used as described above, the housing portion is enlarged by increasing the interval between the lateral ribs, and one large fastening member having a large front-rear dimension is provided in the housing portion. It is also possible to attach a piece (fixing bracket). However, since the lateral ribs on the upper surface of the seat plate are reduced, there is a problem that the strength of the seat plate is lowered.

  The present invention has been made in view of the above problems, and provides a chair with an armrest in which armrest members are fixed to both sides of a seat plate via one fixing bracket without reducing the number of lateral ribs. Furthermore, another object of the present invention is to propose a structure in which the fixing bracket can be easily and securely attached.

Means for Solving the Problems and Effects of the Invention

The present invention relates to a chair with an armrest provided with a seat plate that supports a cushion portion mounted thereon as a structural material of the seat portion of the chair, and armrest members fixed to both sides of the seat plate,
Located on at least both sides of the upper surface of the seat plate on which the cushion portion is mounted, has a height that extends in the width direction of the seat portion and rises from the upper surface of the seat plate at a predetermined interval in the front-rear direction of the seat portion. A plurality of lateral ribs formed in a straight line,
A fixing bracket for fixing the base end portion of the armrest member to both side portions of the seat plate, which are respectively arranged on the both sides of the seat plate along the front-rear direction of the seat plate;
The fixing bracket is
A pair of base portions that can be seated on the seat plate at a distance exceeding an adjacent interval between the plurality of lateral ribs in the front-rear direction of the seat plate, and each has a female thread portion;
Between the base portions, the first vertical wall portion rises from the inner end of one base portion corresponding to the height of the horizontal rib, and then rises across at least one of the plurality of horizontal ribs in the front-rear direction. A box-shaped portion that extends as a plate portion and then falls as a second vertical wall portion and continues to the inner end of the other base portion;
Each fixing bracket is arranged across a plurality of lateral ribs on both sides of the seat plate, and is seated on the seat plate at the pair of base portions, and the base end portion of the armrest member is arranged on the lower surface of the seat plate. The armrest members penetrate the base end and the seat plate from the bottom to the top and are screwed into the internal thread of each base portion of the fixing bracket, so that each armrest member is attached to both sides of the seat plate. It is fixed through one fixing bracket.

  If comprised as mentioned above, since a fixing metal fitting is arrange | positioned ranging over several horizontal ribs, it is maintained without the lack of a plurality of horizontal ribs for arrangement of fixing metal fittings, and the strength of the seat plate decreases. Never do. In addition, by fixing the armrest member through one fixing bracket, the fixing bracket and the armrest member are integrated, and the strength of the armrest in the chair is excellent. Furthermore, since a smaller number of members are required than using a plurality of relatively small fixing brackets, the mounting operation is facilitated and the material cost is reduced.

  Further, according to the present invention, the upper plate portion of the box-shaped portion of the fixing bracket engages with the upper edge portion of the lateral rib positioned between the pair of base portions to position the fixing bracket with respect to the seat plate. An engaging part can be formed.

  If it does in this way, when arranging a fixture to a seat board, positioning will be performed and an armrest member can be fixed easily.

Furthermore, the present invention provides
The engaging part of the fixing bracket is in the form of a slit parallel to the lateral rib,
The horizontal rib is a part to be engaged whose part corresponding to the slit is higher than the other part by a certain amount, and the slit of the fixing bracket fits into the engaged part, and the fixing bracket is attached to the seat plate. Can be positioned relative to each other.

  In this way, the fixing bracket is positioned by the engaging portion by the slit and the engaged portion by the protruding portion formed on the lateral rib, and the fixing bracket is attached to the seat plate in the left-right direction reversely. It is possible to eliminate problems such as

  Embodiment 1 of the present invention will be described below with reference to the drawings.

Example 1
FIG. 1 is a perspective view of a chair 1 with an armrest of the present invention. The leg 2 is provided with a caster 3 provided at the tip of the leg 2 and a pedestal 4 whose height can be adjusted by operating the handle 5. The seat frame 6 supported by the pedestal 4 is provided with a seat plate 20 which is a structural material inside the seat frame 6 and four locking pieces on the front end surface of the seat frame 6 for handling. An instruction manual holder 7 that can store the instructions is provided, and armrest members 10 are fixed to the lower surfaces of the left and right sides from the rear. Above the seat frame 6, a cushion portion 8 and a backrest portion 9 are provided in a form that is substantially perpendicular to the cushion portion 8 in a side view.

  The seat frame 6 is formed of a synthetic resin and has a generally bowl shape. The seat plate 20 reinforces the internal structure of the seat frame 6 and supports the cushion portion 8 mounted on the upper side.

  The armrest member 10 is provided with an inverted triangular armrest 11 in a side view and a base end portion 12 at an end portion below the armrest member 11, and the whole is integrally formed of synthetic resin. The base end portion 12 is formed with an armrest attachment hole 13 and is attached to the seat plate 20 as shown in FIGS.

  FIG. 2 is a plan view showing the upper surface of the seat plate 20 inside the seat frame 6 from which the cushion portion 8 of FIG. 1 has been removed. FIG. 3 shows the outer shape of the fixture 30. Hereinafter, description will be given based on FIG. 2 and FIG.

  The seat plate 20 shown in FIG. 2 has a substantially quadrangular outer shape, is in the form of a bowl, and has a recessed center. The upper surface of the seat plate 20 is formed with a plurality of linear ribs 22 having a predetermined height rising from the upper surface of the seat plate 20 while extending in the width direction of the seat plate 20 at equal intervals in the front-rear direction. In addition, a plurality of vertical ribs 21 having a predetermined height rising from the upper surface of the seat plate 20 at linear intervals in the width direction are formed in a straight line, and they intersect with each other in a lattice pattern so that the upper and lower sides of the seat plate 20 The strength in the direction is increased, and it is possible to cope with the weighting caused by sitting.

  3 is formed on both side portions slightly behind the center of the seat plate 20 so that the fixing bracket 30 shown in FIG. 3 is arranged, and each of the bracket mounting portions 23 has the vertical rib described above. 21 and at least one of the vertical rib 21 and the horizontal rib 22 that divides the periphery of the metal fitting mounting portion 23 is formed by a rib of the other portion. The thickness of the rib is increased to increase the strength.

  The inner side of each metal fitting part 23 is connected to the vertical rib 21 defined in the embodiment and functions as the horizontal rib 22, and the shape is partially different for positioning the fixing metal 30 (the shape will be described later). The positioning ribs 22a are provided one by one, and the fixture 30 is disposed across the positioning ribs 22a. Further, there is no member corresponding to the vertical rib 21 inside the metal mounting part 23, and the vertical rib 22 is omitted. Since the vicinity of the bracket mounting portion 23 is close to the outer periphery of the seat plate 20, a force to push down the outer periphery of the seat plate 20 may be applied from the cushion portion 8 of FIG. 1, but the bracket mounting portion 23 counters this force. Inside, the positioning rib 22a corresponding to the horizontal rib 22 is arranged, so that the strength can be maintained even if the vertical rib 22 is omitted.

  Each of the pair of left and right metal fittings 23 is formed with one cylindrical hole 25 extending vertically. Further, four through holes 27 penetrating from the upper surface to the lower surface of the seat plate 20 are formed.

  As shown in FIG. 3, the fixing bracket 30 is integrally formed by pressing a steel plate, and a horizontal base portion 31 is formed evenly on the left and right sides. The base portion 31 is in close contact with the bracket mounting portion 23 of FIG. Installed. And between these base parts 31, after rising as the 1st vertical wall part 33 from the inner end of one base part 31 corresponding to the height of the horizontal rib 23 of FIG. 2, it bends at right angles to the front-back direction. The box-shaped portion that extends as the upper plate portion 34 so as to cross the positioning rib 22a of FIG. 2 and then falls as the second vertical wall portion 35 at a right angle in the front-rear direction and continues to the inner end of the other base portion 31. 36 is formed.

  In the embodiment, since the seat plate 20 of FIG. 2 has a bowl shape, the lateral ribs 22 correspond to the lower surface of the cushion portion 8 disposed on the upper surface of the seat plate 20, and the outer circumferential direction of the seat plate 20. The positioning ribs 22a, which are the lateral ribs 22 in the bracket mounting portion 23, are also low in the outer peripheral direction of the seat plate 20 and low in the central direction. It is formed to be higher. On the other hand, the upper plate portion 34 of the fixing bracket 30 is inclined so that the central portion direction in the seat plate 20 of FIG. 2 is high and the outer peripheral portion direction of the seat plate 20 is low in order to closely contact the positioning rib 22a. .

  On the base part 31 arranged as a pair of the fixing metal fittings 30, for example, female thread parts 32 such as nuts are provided at two locations, and the female thread part 32 is composed of, for example, a weld nut, It is fixed to the base portion 31 by welding. The base portion 31 of the fixing metal 30 is disposed with the box-shaped portion 36 interposed therebetween, and the screw portion 32 is formed at a position to be paired with the box-shaped portion 36 interposed therebetween so as to be fixed to the base portion 31. The position of the female thread portion 32 is very important when the fixing bracket 30 is fixed to the bracket mounting portion 23. In the embodiment, as a means for specifying the position of the female thread portion 32, a box-shaped portion is used. Positioning means is provided for each female screw portion 32 that forms a pair with 36 interposed therebetween. That is, the box-shaped portion 36 of the fixing bracket 30 is provided with a slit (engagement portion) 38 between the female screw portions 32 that are paired on the end portion side of the fixing bracket 30 and is paired on the other end portion side. A metal fitting hole 37 is formed between the female screw parts 32, and the slit (engagement part) 38 and the metal fitting hole 37 function as positioning means for the female screw part 32 on the fixing metal 30 side. In the fixed metal fitting 30 shown in FIG. 3, a slit (engagement portion) 38 is provided at an end of the inclined box-shaped portion 36 with a low inclination, and a metal attachment hole 37 is formed at an end with a high inclination.

  Hereinafter, attachment of the armrest member 10 will be described. FIG. 4 is a plan view of the seat plate 20 in which the armrest member 10 is attached to the seat plate 20. 5 is an AA partial enlarged sectional view of FIG. 4, and FIG. 6 is a BB partial enlarged sectional view of FIG.

  The cylindrical portion 25 and the positioning rib 22a shown in the embodiment of FIGS. 2 and 5 have a function of positioning the fixing bracket 30, that is, the positioning of the female thread portion 32, and the upper plate portion of the fixing bracket 30. 34 can be brought into close contact with the upper surface of the positioning rib 22a. At the end of the upper surface portion of the positioning rib 22a, a step portion 24a is provided to form a protruding portion (engaged portion) 24 so that the outer peripheral portion direction of the seat plate 20 becomes higher. When closely attached to the upper surface portion of the positioning rib 22a, the slit (engaging portion) 38 of the fixing bracket 30 engages with the protruding portion (engaged portion) 24 to constitute a positioning means.

  A cylindrical hole 25 is disposed in the positioning rib 22a at a position corresponding to the metal fitting mounting hole 37 of the upper plate portion 34. As shown in FIG. 4, the fixing bracket 30 is disposed across the positioning rib 22 a provided on the upper surface of the seat plate 20, and the slit (engagement portion) provided in the upper plate portion 34 of the fixing bracket 30. 38 is fitted into the positioning rib 22a, and the slit (engagement portion) 38 of the box-shaped portion 36 is positioned. Specifically, the positioning rib 22a has a protruding portion as shown in FIGS. 5 and 6 in which the portion corresponding to the slit (engaging portion) 38 has a height of about 4 mm (step portion 24a) higher than the other portions. An (engaged portion) 24 is formed, and a slit (engagement portion) 38 is fitted into the protruding portion (engaged portion) 24 from the left-right direction of the seat plate 20 and positioned.

  Further, as shown in FIG. 5, the cylindrical hole 25 provided in the bracket mounting portion 23 and the bracket mounting hole 37 of the fixing bracket 30 are combined, and the positioning screw 39 is inserted into the cylindrical portion 25 via the bracket mounting hole 37. Is inserted from above and screwed together, so that the bracket mounting hole 37 of the box-shaped portion 36 shown in FIG. 3 is positioned and fixed.

  In the embodiment shown in FIG. 4, positioning is performed by bringing the outer shape of the fixing bracket 20 into contact with the inner edge of the bracket mounting portion 23 together with the above positioning. That is, the lateral rib 22 that defines and forms the metal fitting attachment portion 23 is brought into contact with the base portion 31 of the fixed metal fitting 30. As described above, the positioning by the slit (engagement portion) 38 and the positioning by the inner edge of the bracket mounting portion 23 are used together, so that when the fixing bracket 20 is disposed, the cylindrical hole 25 and the bracket mounting hole 37 are Since it is in the correct position, the screwing operation becomes very easy only by tightening one set screw 39.

  As shown in FIG. 6, with the base end portion 12 of the armrest member 10 disposed on the lower surface of the seat plate 20, the base end portion 12 and the seat plate 20 are moved from the lower side to the upper side, for example, bolts or the like. The male screw member 14 is screwed into and penetrates the female screw portion 32 of the base portion 31 of the fixing bracket 30. Since the female thread portion 32 of the base portion 31 is positioned so as to be positioned at a preset location, the left and right armrest members 10 are each provided with one fixing bracket with respect to both side portions of the seat plate 20. 30 is fixed in the correct position. And after attaching the armrest member 10, the aspect seen from the downward direction is shown in FIG. As described above, the armrest member 10 is firmly fixed to the seat plate 20, the armrest member 10 and the seat plate 20 are integrated, and the strength of the armrest in the chair is increased.

(Modification of Example 1)
FIG. 8 shows a modification of the fixing bracket 30 shown in FIG. In this embodiment, a fixing bracket 40 formed so that the upper plate portion 34 is parallel to the base 31 is used. In addition, the same code | symbol is attached | subjected to the part which has a function common to a present Example, and description is abbreviate | omitted. In this embodiment, it is effective when the bowl-shaped shape of the seat plate 20 is shallow, and as shown in FIG. 9, the positioning rib 22a has an upper surface portion that maintains the same height without being inclined. In addition, a stepped portion 24a and a protruding portion 24 are formed on the upper surface portion of the positioning rib 22a so that the outer peripheral portion direction of the seat plate 20 becomes higher. When this fixing bracket 40 is used, as in FIG. 4, the fixing bracket 40 is installed in the bracket mounting portion 23, and the positioning rib 22 a is sandwiched in the slit (engagement portion) 38, so that the female thread portion 32. The fixing bracket 40 having the position is positioned. And as shown especially in FIG. 4 mentioned above, the left and right armrest members 10 are respectively fixed to the both side portions of the seat plate 20 via one fixing bracket 40.

  As for the shape of the protruding portion 24 of the positioning rib 22a relative to the upper plate portion 34, the shape of the upper edge of the protruding portion (engaged portion) 24 of the positioning rib 22a is set to the outside of the upper plate portion 34 as shown in FIG. The upper edges of the upper plate portion 34 and the protruding portion (engaged portion) 24 may be flush with each other with respect to the inclination of the metal fitting mounting portion 23. Become parallel. In this way, the upper plate portion 34 of the attachment portion 23 can receive the cushion portion 8 by the upper plate portion 34 when the cushion portion 8 of FIG. 1 is disposed on the seat plate 22. Can be installed stably.

  Embodiment 2 of the present invention will be described below with reference to the drawings. In addition, the part which has the function which is common in Example 1 is attached | subjected to the same code | symbol, and description is abbreviate | omitted.

(Example 2)
FIG. 10 shows the upper surface of the seat plate 20 used in the second embodiment of the present invention. On both side portions of the seat plate 20 at slightly rearward positions, one metal fitting portion 51 for arranging the fixing metal fitting 50 of FIG. 11 is formed one by one. The metal fitting attaching portion 51 is partitioned by the vertical ribs 21 and the horizontal ribs 22 as in the first embodiment. In addition, unlike the embodiment of FIG. 2 in which the vertical ribs 21 are not formed and the positioning ribs 22a are provided at the inside of each metal fitting mounting portion 51, the positioning of the fixing metal fitting 50 is provided at two locations. Positioning ribs 22b and positioning ribs 22c are provided. The spacing between the positioning ribs 22b and the positioning ribs 22c is substantially the same as the spacing between the lateral ribs 22 with respect to the front-rear direction of the seat plate 20, and the fixing bracket 50 in FIG. 22c.

  FIG. 11 is a perspective view showing the fixing bracket 50. The difference between the fixing bracket 30 of FIG. 3 and the fixing bracket 40 of FIG. 8 is that a slit (engagement portion) 38 is not provided. The two positioning ribs 22b and 22c replace the slit (engagement portion) 38 to position the fixing metal fitting 50 on which the female screw portion 32 is disposed.

  Specifically, as shown in FIG. 12, the inner surface of the first vertical wall portion 33 of the fixture 50 is in contact with the positioning rib 22b, and the inner surface of the second vertical wall portion 35 is in contact with the positioning rib 22c. The seat plate 20 is positioned in the front-rear direction by the two positioning ribs 22b and 22c arranged between the vertical wall portion 33 and the second vertical wall portion 35. In this case, as shown in FIG. 13, the upper edges of the positioning ribs 22 b and 22 c may be in contact with the lower surface of the fixture 50, but it is not always necessary to fix the fixture 50. Further, as shown in FIG. 10, the bracket mounting portion 51 between the two positioning ribs 22b and 22c corresponds to the bracket mounting hole 37 of the upper plate portion 34 of the fixing bracket 50 arranged at a normal position. A cylindrical hole 25 is disposed at the position. For this reason, as shown in FIG. 12, a positioning screw 39 is inserted into the bracket mounting hole 37 from above, and is screwed into the cylindrical hole 25 to be fixed. Positioning in the left-right direction is made.

  FIG. 14 shows a mode in which the instruction manual 60 is stored in the instruction manual holder 7, and the instruction manual holder 7 provided on the lower surface of the seat frame includes a first locking piece 61 and a second locking piece 61. And a locking piece 62. Specifically, the instruction manual 60 is inserted into the instruction manual holder 7, and the instruction manual 60 is held by the first locking piece 61 and the second locking piece 62, and the back of the second locking piece. Positioning is performed by bringing the end of the instruction manual 60 into contact with the wall.

  The above is literally one example of the present invention, and it goes without saying that the present invention is not construed as being limited to the description of the example.

The perspective view of the chair with an armrest of this invention. The top view which shows the upper surface of a seat board. The figure which shows the outer shape of a fixing metal fitting. The top view which shows the upper surface of the seat board which attached the armrest member. The AA partial expanded sectional view of FIG. The BB partial expanded sectional view of FIG. The perspective view which looked at the 1 side part of the seat board which attached the armrest member from the downward direction. The perspective view which shows the modification of the fixing metal fitting of FIG. The expanded sectional view which shows the state which attached the fixing metal fitting of FIG. 8 to the seat plate. The top view which shows the upper surface of the seat board in the other Example of this invention. The perspective view which shows the fixing metal fitting attached to the seat plate of FIG. The top view which shows the upper surface of the seat plate which attached the fixing metal fitting of FIG. CC partial expanded sectional view of FIG. Explanatory drawing which shows the state which inserted the instruction manual in the instruction manual holder.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Chair with armrest 7 Instruction manual holder 10 Armrest member 12 Base end part 14 Male thread member 20 Seat plate 21 Vertical rib 22 Horizontal rib 22a Positioning rib 22b First positioning rib 22c Second positioning rib 23 Bracket mounting part 24 Projection part ( Engaged part)
Reference Signs List 30 Fixing bracket 31 Base portion 32 Female thread portion 33 First vertical wall portion 34 Upper plate portion 35 Second vertical wall portion 36 Box shape portion 37 Metal fitting mounting hole 38 Slit (engaging portion)
39 Positioning screw 40 Fixing bracket 50 Fixing bracket 51 Mounting bracket 60 Instruction manual 61 First locking piece 62 Second locking piece

Claims (3)

In a chair with an armrest provided with a seat plate that supports a cushion portion mounted thereon as a structural material of the seat portion of the chair, and armrest members fixed to both sides of the seat plate,
A height of the seat plate that is positioned at least on both sides of the upper surface on which the cushion portion is mounted, extends in the width direction of the seat portion, and rises from the upper surface of the seat plate at a predetermined interval in the front-rear direction of the seat portion. A plurality of lateral ribs formed in a straight line with a thickness,
A fixing bracket for fixing the base end portion of the armrest member to both side portions of the seat plate, which is disposed on both sides of the seat plate along the front-rear direction of the seat plate,
The fixing bracket is
A pair of base portions that can be seated on the seat plate at a distance exceeding an adjacent interval between the plurality of lateral ribs in the front-rear direction of the seat plate, and each of which is formed with a female thread portion;
Between the base portions, the first vertical wall portion rises from the inner end of one base portion corresponding to the height of the horizontal rib, and then crosses at least one of the plurality of horizontal ribs in the front-rear direction. A box-shaped portion that extends as an upper plate portion and then falls as a second vertical wall portion and continues to the inner end of the other base portion,
Each fixing bracket is disposed across the plurality of lateral ribs on both sides of the seat plate, and is seated on the seat plate at the pair of base portions, and a base end portion of the armrest member is a lower surface of the seat plate Both sides of the seat plate by male screw members that pass through the base end portion and the seat plate from the lower side to the upper side and are screwed into the female thread portions of the base portions of the fixing bracket. On the other hand, each armrest member is fixed via one said fixing bracket, The chair with an armrest characterized by the above-mentioned.   Engagement of the upper plate portion of the box-shaped portion of the fixing bracket with the upper edge portion of the lateral rib positioned between the pair of base portions to position the fixing bracket with respect to the seat plate The chair with an armrest of Claim 1 in which the part is formed. The engaging part of the fixing bracket is in the form of a slit parallel to the lateral rib,
The horizontal rib is a portion to be engaged whose height corresponding to the slit is higher by a certain amount than the other portion, and the slit of the fixing bracket is fitted into the engaged portion, and the fixing bracket is The chair with an armrest according to claim 1 or 2, which is positioned with respect to a seat plate.

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