JP6083887B2 - Wooden chair cushion - Google Patents

Description

The present invention relates to cushions for use in wooden chair child.

  Chairs with exposed wooden seats are often used as learning desks for children and students, chairs for classrooms and auditoriums, etc., but the seats are stiff and will hurt your hips if you use them for a long time There is a problem. This also applies to a chair having a bare resin seat. Accordingly, various cushions have been proposed for use in a chair of a type in which a seat plate made of a hard material is exposed.

  The cushion has a main body with the cushion covered with a skin material, but the problem for the chair cushion is to maintain the position and posture so as not to slip off or fall off. It is described that a friction layer made of a thermoplastic elastomer is provided on the lower surface, and Patent Document 2 describes that a fixing string is provided at the four corners of the main body and an anti-slip unevenness is provided on the lower surface. Further, Patent Document 3 discloses a chair in which a front end portion and a rear end portion of a seat plate are supported by a horizontally long headboard, and left and right horizontally long fixing bands are attached to the front end and rear end of the main body, and these fixing bands are attached to the chair. It is described that it is attached to the headboard with a hook-and-loop fastener.

  Further, in Patent Document 4, as a seat plate for a folding wheelchair, cloth fixing bands are provided at the front end and the rear end of the main body, and these fixing bands are wound around the lower surface of the seat plate and overlapped, It is described that front and rear fixing bands are connected by hook-and-loop fasteners.

Japanese Utility Model No. 63-140252 microfilm Utility Model Registration No. 3096002 Japanese Patent No. 3161374 Japanese Patent Laid-Open No. 10-192081

  Just by providing a friction layer on the lower surface of the main body as in Patent Document 1, if the user floats the body, the cushion may be displaced and the position / posture holding function is not perfect. On the other hand, there is a problem that the method of binding with the strings provided at the four corners as in Patent Document 2 can be applied only to a chair having four legs. Also, in the case of Patent Document 3, there is a problem that can be applied only to a chair having a structure in which the front portion and the rear portion of the seat plate are supported by the headboard.

  On the other hand, since the thing of patent document 4 wraps a seat board from both front and back with a cushion, there exists an advantage which can apply widely to the chair with which the lower surface of a seat board is open. However, in Patent Document 4, since the fixing band is only a simple band-shaped configuration, if the lateral width is small, there is a problem that the cushion is likely to be displaced. If the width is increased to about the horizontal width, the slip prevention function is improved, but the hook and loop fasteners must be placed long in the left and right direction, which makes it difficult to attach to and detach from the seat plate (connecting and separating the fixing bands). is there.

The present invention has been made in view of such circumstances, the wooden chair cushion, which mainly aims to be attached also to facilitate while securing the displacement prevention function.

The present invention is used for a chair in which the left and right sides of a substantially square wooden seat plate in plan view are supported by bracket plates from below, and the left and right bracket plates are supported by wooden side frames arranged on the left and right outer sides thereof. The cushion is attached to the seat plate in a state where the rear portion is sandwiched between the left and right side frames.
A flat body with a cushioned material wrapped with cloth or other flexible skin material, a rectangular shape in plan view having front, rear, left and right sides, and approximately the same size as the seat plate, and a front end portion and a rear end portion of the main body A pair of front and rear thin band fixing bands attached to each other, the front and rear fixing bands partially overlapping on the lower surface side of the seat plate, In the configuration in which the locking means for holding the two fixing bands in a connected state is provided at the site where the bands overlap each other,
Fixing band around the, respectively with the left and right width toward the distal end of linked base end to said body is a trapezoid becomes smaller, longitudinal length from the proximal end to the distal end from the front end of the front Stories body It is shorter than the front-rear length to the rear end ,
And, by providing a gap larger than the thickness of the bracket plate between the left end of the both fixing bands and the left end of the main body and between the right end of the both fixing bands and the right end of the main body. , thereby avoiding interference with the bracket plate and the two fixed bands.

The present invention further has various configurations, and examples thereof are specified in claims 2 and below. Among the invention of claim 2, in claim 1, a portion of the distal end side of the front and rear solid titration, band, is provided with a surface Fas Na as the locking means.

The invention according to claim 3, in claim 2, while the fixing band around the have different front post length, either or both of the fastener before and after the fixing band is longer strip-shaped in the longitudinal direction It is in form.

  According to a fourth aspect of the present invention, in any one of the first to third aspects, the back surface of the main body is provided with a non-slip portion made of a material having a large friction coefficient, and the non-slip portion is overlapped on the main body. It is set to be hidden by the fixing band.

In the present invention, since there is a gap between the fixing band and the main body, the cushion can be attached to the seat plate without causing the fixing band to interfere with the bracket plate. In addition, since the distance between the fixing band and the main body is only the size necessary to avoid interference with the bracket plate, the base end of the fixing band is placed on the left and right sides of the front and rear of the seat plate. Can be applied in a wide range. For this reason, it is possible to accurately prevent the movement of the main body from turning horizontally and to ensure high stability.
Lateral width of the base of the fixing band is as wide as possible to the preferred arbitrariness is, if more than about 70% of the lateral width of the main body, it can be said that the deviation preventing function is suitable are better exerted.

Since the fixing band has a trapezoidal shape with the distal end narrower than the base end, the front and rear fixing bands can be quickly locked and separated so as to overlap each other by locking the distal ends. In other words, since the fixing band is tapered, it is possible to hold the fixing bands in an overlapped state while narrowing the left and right arrangement area of the locking portion, so that the front and rear fixing bands overlap each other. It can be quickly locked and separated, so that the cushion can be quickly attached and detached.

Further, the fixing band can be advantageously held and advantages that allows easily processed because it is simple shape a trapezoid, a state in which the entire taut by pulling the tip. In addition, as the locking means, for example, a push-in hook can be used. However, when a hook-and-loop fastener is used as in claim 3, the engagement / disengagement may be simply pushed or pulled, and thus the quick attachment / detachment is excellent. At the same time, if the surface fasteners of the front and rear fixing bands partially overlap each other, they can be connected to each other, so that there is an advantage that it is possible to cope with differences in the thickness and size of the seat plate. Further, there are cases in which a horizontally long reinforcing bar is provided on the lower surface of the seat plate. However, if a hook-and-loop fastener is used as the locking means, the presence or absence of the reinforcing bar can be accurately handled.

  Since the front and rear fixing bands are locked on the lower surface of the seat plate, the locking position between the locking means is preferably located on the front side or the rear side as much as possible. In this regard, if the front and rear lengths of the front and rear fixing bands are made different as in claim 3, the locking position of the hook-and-loop fastener as the locking means can be shifted toward the front side or the rear side of the seat plate. For this reason, when inserting and removing the cushion, the size that allows the hand to enter the back of the seat plate can be made as small as possible. This can further contribute to the ease of attaching the cushion.

  If the friction type anti-slip part is used together as in claim 4, it is preferable that the slipping movement of the cushion can be prevented more accurately. Further, since the anti-slip part is hidden behind the fixing band and cannot be seen even at the distribution stage, there is an advantage that it is particularly excellent in aesthetics at the distribution stage.

(A) is the isolation | separation perspective view of a chair and the cushion of 1st Embodiment, (B) is a perspective view in the state which turned the cushion down. (A) is a partially broken plan view of the chair, (B) is a cross-sectional view taken along the line BB of (A), and (C) is a partially enlarged view of (B). (A) is a bottom view in a state where the fixing band is expanded, (B) is a bottom view in a state where the fixing band is folded, and (C) is a right side view of (B). (A) is a bottom view in a state where the fixing band is expanded, and (B) is a right side view of (A). It is a perspective view of the state which folded up the band for fixation. It is isolation | separation principal part sectional drawing of 2nd Embodiment. It is a figure of 3rd Embodiment which is a specific example of a non-slip | skid part.

(1). First Embodiment Next, an embodiment of the present invention will be described with reference to the drawings. First, the first embodiment shown in FIGS. 1 to 5 will be described. As shown in FIG. 1, a cushion 1 according to this embodiment is applied to a wooden chair 2 used as a set with a learning desk (not shown).

The chair 2 includes a pair of left and right side frames 3 tilted backward with respect to a vertical line in a side view, and a wooden seat plate 4, a footrest 5 and a backrest 6 are attached to the left and right side frames 3. . Seat plate 4 is substantially in plan view a square shape, a bracket plate 7 and fixed to the lower surface of the right and left side portions are fixed with screws to the bracket plate 7 to the inner surface of the side frame 3. The bracket plate 7 can be fixed to the side frame 3 by changing the height stepwise. Therefore, the height of the seat plate 4 can be adjusted stepwise. The bracket plate 7 is greatly exposed in front of the side frame 3, and a certain range of the front side of the seat plate 4 is overhanging in front of the bracket plate 7.

  The footrest 5 and the backrest 6 are directly attached to the left and right side frames 3. The left and right sides of the footrest 5 are fitted into support grooves 8 provided on the inner surface of the side frame 3, and by providing a plurality of steps of the support grooves 8, the height of the footrest 5 is increased to a plurality of levels (three levels). You can switch to Of course, both the seat plate 4 and the footrest 5 may be attached in a state where the height cannot be changed. The backrest 6 is fixed at a constant height, but it can also be of a height adjustable type.

A horizontal frame 9 that is long in the longitudinal direction is fixed to the lower end of the side frame 3, and the horizontal frame 9 and the side frame 3 are connected by a plate-shaped reinforcing frame 10 that is inclined forward with respect to a vertical line. Therefore, in the present embodiment, the left and right legs are constituted by the side frame 3, the horizontal frame 9, and the reinforcing frame 10. Casters 11 are provided at the front and rear portions of the horizontal frame 9. The left and right horizontal frames 9 are connected by front and rear reinforcing bars 12.

The cushion 1 is provided with a plate-like cushioning material 14 that is substantially the same size as the seating plate 4 and has a quadrilateral plan view as a main member, and the body 16 is covered with a skin material 15 such as cloth. Is configured. The cushion material 14 is made of a foamed resin such as urethane foam . The skin material 15 comprises upper fabric 15a and lower fabric 15b as separate fabrics . As shown in FIG. 1, the sewing line 17 between the upper fabric 15a and the lower fabric 15b It is located in the upper and lower middle part of the outer peripheral surface.

A front fixing band 18 and a rear fixing band 19 made of a flexible material such as cloth are attached to the front surface and the rear surface of the main body 16. The front and rear fixing bands 18 and 19 each have a trapezoidal shape (constriction) in which the lateral width decreases from the proximal end toward the distal end, and the lateral lateral width L1 of the proximal end is slightly smaller than the lateral lateral width L0 of the main body 16. The left and right lateral width L2 of the tip is set to a dimension that is about half to ¼ of the left and right lateral width L0 of the main body 16.

The reason why the lateral width L1 of the front and rear fixing bands 18, 19 is set to be slightly smaller than the lateral width L0 of the main body 16 is to avoid interference with the bracket plate 7. That is, by providing margins (with a space) larger than the thickness of the bracket plate 7 between the left and right ends of the base ends of the fixing bands 18 and 19 and the left and right ends of the main body 16, the fixing bands are provided. 18 and 19 are avoided from hitting the bracket plate 7.
Since the plate thickness of the bracket plate 7 is about 15 to 25 mm, a margin of about 20 to 30 mm is sufficient for the left and right sides of the bases (base ends) of the fixing bands 18 and 19. It is sufficient that L1 is about 80% of L0, and L2 is about 100 to 150 mm, which is easy to handle. From the standpoint of preventing displacement, L1 is optimally the same size as L0, but it is preferable to set the width as wide as possible while maintaining a lateral width that can avoid interference with the bracket plate 7.

The front and rear fixing bands 18 and 19 have a front and rear length smaller than the front and rear length of the main body 16 and slightly larger than half of the front and rear length of the main body 16, and the front fixing bands. The front and rear length of 18 is set slightly longer than the front and rear length of the rear fixing band 19. A pair of right and left hook-and-loop fasteners 20 and 21 are provided as an example of locking means on the back surface of the front portion of the front fixing band 18 and the front surface of the rear fixing band 19.

Therefore, the rear fixing band 19 overlaps with the lower surface of the seat plate 4, and the front fixing band 18 overlaps with the rear fixing band 19 from below, and in this state, both surface fasteners 20 and 21 are hooked and locked. By doing so, both the fixing bands 18 and 19 are held in a connected state, whereby the cushion 1 is attached to the seat plate 4. The terminology used for the front fixing band 18 and the rear fixing band 19 is convenient, and there is no distinction between front and rear in actual use, and the front fixing band 18 may be behind. is there.

The surface fasteners 20, 21 are in the form of a strip that is long in the front-rear direction, and the front-rear length of the surface fastener 20 of the front fixing band 18 is greater than the front-rear length of the surface fastener 21 of the rear fixing band 19. The length is increased by about the plate thickness. Therefore, even when the cushion 1 is attached to the seat plate 4 as shown in FIG. 2 or when the rear fixing band 19 is overlapped with the main body 16 as shown in FIG. 3, the entire length of the surface fastener 21 of the rear fixing band 19 is obtained. On the other hand, the surface fasteners 20 of the front fixing band 18 are overlapped.

The front and rear fixing bands 18 and 19 can be made of a cloth different from the upper ground 15a and the lower ground 15b constituting the skin material 15, and are integrated with the lower ground 15b or the upper ground 15a. It is also possible to configure in a continuous state. Further, the rear fixing band 19 is attached to the upper and lower intermediate portions of the main body 16 (that is, the sewn portion between the upper side ground 15a and the lower side ground 15b), but may be attached to the upper and lower ends of the front and rear end surfaces of the main body 16. Is possible.

At the center in the plan view (or bottom view) of the lower surface of the main body 16 (i.e. the lower surface of the lower land 15 b), it is provided with a circular slip portion 22. The anti-slip portion 22 uses a soft resin film such as a thermoplastic elastomer, and is bonded to the lower ground 15b by integral molding. However, it is preferable to sew the peripheral edge portion to the lower ground 15b because the peripheral edge portion tends to bend during use. Further, the non-slip portion 22 is set to a size hidden by the fixing bands 18 and 19. For this reason, the anti-slip | skid part 22 is not exposed in a distribution | circulation stage, and the appearance is good. Without to describe dare, slip portion 22 may employ any form such as a polygon or an ellipse.

  As described above, the cushion 1 has the main body 16 placed on the seat plate 4, and then the rear fixing band 19 is first raised upward and overlapped on the lower surface of the seat plate 4 while maintaining the state. The fixing band 18 is raised upward and overlapped with the rear fixing band 19 so that the hook-and-loop fasteners 20 and 21 are engaged with each other, thereby being attached to the seat plate 4 so as not to be displaced.

Since the bases (base ends) of the fixing bands 18 and 19 have a size of 80% or more of the lateral width of the main body 16, the cushion 1 is firmly held at the front end and the receding of the seat plate 4 so that the displacement can be accurately detected. Can be prevented. In particular, when the anti-slip portion 22 is provided as in the present embodiment, the function of preventing deviation is more accurately exhibited. Further, since the fixing bands 18 and 19 are tapered, the tips of the fixing bands 18 and 19 can be held with one hand so as not to sag. For this reason, the fixing bands 18 and 19 can be easily locked in a state where they are accurately overlapped.

Although not shown in the figure, the outer peripheral portions of the fixing bands 18 and 19 are folded back and attached in a stacked manner, and both the fixing bands 18 and 19 are given waist. For this reason, dripping at the time of attachment can be prevented and it can superimpose correctly. As indicated by the dashed line in FIG. 4, it is also possible to provide the vent hole 23 to either or both of the front and rear of both fixing band 18, 19.

  Although it is possible to provide the surface fasteners 20 and 21 one by one at the front ends of the front and rear fixing bands 18 and 19, in this case, the area of the surface fasteners 20 and 21 may be increased and the cost may increase. On the other hand, when the front and rear fasteners 20 and 21 are paired on the left and right sides in the longitudinal direction as in this embodiment, the area of the surface fasteners 20 and 21 is reduced as much as possible to reduce the cost and the seat plate 4 There is an advantage that it can cope with the difference in thickness and size.

(2). Other Embodiments Next, other embodiments shown in FIG. 6 and the following will be described. In the second embodiment shown in FIG. 6, an auxiliary plate 24 having an appropriate waist, such as a resin sheet, is sewn or adhered to the fixing bands 18 and 19 as a shape retaining means, and the surface fastener is attached to the auxiliary plate 24. Locking means such as 20, 21 are provided. In this embodiment, the fixing bands 18 and 19 are held in a flat state without gripping the front ends thereof by hand, so that the attachment can be performed more easily.

  FIG. 7 shows a third embodiment which is a specific example of the anti-slip portion 22, and this anti-slip portion 22 can be applied as it is to the anti-slip portion 22 of the first embodiment. The non-slip portion 22 of this embodiment is made of a rubber-like resin such as an elastomer, but has a form in which a group of resins extending in the left-right direction is provided in parallel, and is adjacent in the front-rear direction. Resin wires are connected to each other. Therefore, a large frictional resistance is exhibited against the longitudinal displacement. Since the cushion 1 tends to shift in the front-rear direction, the use of the anti-slip portion 22 of this embodiment has an advantage that a high anti-slip effect can be exhibited while suppressing the amount of resin used.

  The anti-slip portion 22 is bonded to the lower ground 15b, but the peripheral edge is attached to the lower ground 15b with a sewing thread 25. For this reason, even if it uses for a long period of time, the anti-slip | skid part 22 does not bend.

(3). Others present invention can be in addition to various concrete than the above embodiment. For example, the front portion fixing band and a rear fixing band may be set to the same shape and size. Various materials such as woven fabric, knitted fabric, natural or artificial leather can be used for the skin material and the rear fixing band.

  When using hook-and-loop fasteners as locking means, provide hook-and-loop fasteners consisting of a large number of hooks only on one fixing band, and the other fixing band is a coarse knitted fabric such as nonwoven fabric or pile fabric. By doing so, it is possible to have a hook-and-loop fastener function.

In the case of providing the non-slip portion, various structures and modes such as a dotted shape and a spider web shape can be employed. The anti-slip portion can be provided on the entire lower surface of the main body. As the locking means, a push-in hook or a hooked hook can be used. Needless to say, it is also possible to add a border decoration around the body.

Further, the cushion of the present embodiment has an unprecedented design and can be a target for design registration. In this case, the aspect in which the fixing bands 18 and 19 are overlapped at the distribution stage as shown in FIG. 5 has a unique aesthetic, and is a partial design characterized by the overlapping of the fixing bands 18 and 19 on the back surface. It is also possible to capture.

The present invention can be embodied as a chair cushion. Therefore, it has industrial applicability.

DESCRIPTION OF SYMBOLS 1 Cushion 2 Chair 3 Side frame which comprises the leg of a chair 4 Seat board
DESCRIPTION OF SYMBOLS 7 Bracket board 14 Cushion material 15 Skin material 15a Upper side ground 15b Lower side ground 16 Main body 18 Front part fixing band 19 Rear part fixing band 20, 21 Surface fastener 22 as an example of locking means 22 Non-slip part

Claims (4)

The left and right sides of the substantially rectangular wooden seat plate in plan view are supported by bracket plates from below, and the left and right bracket plates are supported by wooden side frames arranged on the left and right sides of the chair. A cushion that is attached to the seat plate in a state sandwiched between the left and right side frames,
A flat body with a cushioned material wrapped with cloth or other flexible skin material, a rectangular shape in plan view having front, rear, left and right sides, and approximately the same size as the seat plate, and a front end portion and a rear end portion of the main body A pair of front and rear thin band fixing bands attached to each other, the front and rear fixing bands partially overlapping on the lower surface side of the seat plate, In the configuration in which the locking means for holding the two fixing bands in a connected state is provided at the site where the bands overlap each other,
Fixing band around the, respectively with the left and right width toward the distal end of linked base end to said body is a trapezoid becomes smaller, longitudinal length from the proximal end to the distal end from the front end of the front Stories body It is shorter than the front-rear length to the rear end ,
And, by providing a gap larger than the thickness of the bracket plate between the left end of the both fixing bands and the left end of the main body and between the right end of the both fixing bands and the right end of the main body. , Avoiding interference between the both fixing bands and the bracket plate ,
Wooden chair cushion. A portion of the distal end side of the front and rear solid titration, band, is provided with a surface Fas Na as the locking means,
The wooden chair cushion according to claim 1. While fixing band around the have different front post length, either or both of the fastener before and after the fixing band is in the long strip form in the longitudinal direction,
The wooden chair cushion according to claim 2. A non-slip portion made of a material having a large friction coefficient is provided on the back surface of the main body, and the anti-slip portion is set so as to be hidden by the fixing band superimposed on the main body.
A wooden chair cushion according to any one of claims 1 to 3.

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