JP2014046128A - Chair and seat plate of the same - Google Patents

Abstract

An object of the present invention is to prevent forward slipping of a body in a sitting state without giving an unpleasant appearance or discomfort / discomfort in a sitting state.
A range excluding a front portion 14a of a seat plate 14 is a normal surface that is basically free of unevenness (waving) in a front view and a longitudinal side view. The front portion 14a of the seat plate 14 has a configuration in which the intermediate portion 14b is extended as it is, but the left and right intermediate portions of the front portion 14a are saddle portions 25 that are not deformed by human body pressure. Is a thigh support portion 26 that is recessed and deformed by human body pressure. Since the saddle portion 25 is relatively raised due to the dent deformation of the thigh support portion 26, the front slip of the body is prevented. Since the saddle portion 25 is not higher than the intermediate portion 14b, it does not give an unpleasant appearance, and it does not cause excessive discomfort and does not give a sense of incongruity or discomfort.
[Selection] Figure 6

Description

  The present invention relates to a chair in which a saddle function is formed in a seat for holding a body so that the body does not slip forward even when a person is seated shallowly, and a seat plate provided with a saddle portion for preventing front slip.

  As one type of chair, there is a chair (high position chair) in which the height of the seat is set higher than that of a normal chair so that adults of general height can sit in the middle waist shallowly, For example, it is used in a work environment where there are many standing jobs and frequent movements. When working on this high position chair with the thighs leaning and sitting in a shallow position (in a so-called “chung” or “choy” state), the thigh is tilted and the body is in front May have a tendency to slip.

  In this regard, it is considered that the front part of the seat should be raised to improve the catch on the buttocks, but this causes a problem that the front edge of the seat presses the human thigh. On the other hand, as described in Patent Documents 1 to 3, for example, there is a chair provided with a ridge-like saddle portion in the longitudinal direction on the seat surface, and by providing the saddle portion on the seat of the high position chair, It may be possible to prevent forward slip.

A microfilm of Japanese Utility Model Application No. 60-126044 JP 2008-119182 A Japanese Patent No. 4018329

  The conventional saddle portions described in Patent Documents 1 to 3 are formed so as to extend over substantially the entire length of the seat, and accordingly, the seat surface has trough portions (concave portions, groove portions) located on the left and right sides of the saddle portion. ) Is formed over substantially the entire length. That is, the seating surface has an uneven shape over substantially the entire length.

  It can be said that the uneven shape of the seat surface is excellent in suppressing the front slip of the body, but because it has a strong image of `` stretching '' rather than sitting down in appearance, it may not only give disgust, but actually Sitting may cause discomfort and discomfort. In particular, when the user is a woman, the user often has a sense of disgust or discomfort.

  The present invention has been made in view of such a current situation, and an object of the present invention is to make it possible to exhibit the slip prevention function of the saddle portion without giving discomfort or discomfort to the user.

  The present invention is directed to a chair and a seat plate, and the chair holds a saddle function for holding a body so that the body does not slip forward even if a person sits shallowly on a resin seat plate constituting the seat. It has a basic configuration.

  In the first aspect of the present invention, in the basic configuration, the upper surface of a portion excluding the front portion of the seat plate where the seated portion of the person sitting shallowly hits is basically not uneven in a front view and a longitudinal side view. On the other hand, the left and right intermediate parts corresponding to the crotch of the person sitting shallowly in the front part of the seat plate are deformed by the body pressure with the normal surface extended toward you. It is a saddle part with difficult strength, and the thigh support parts located on the left and right sides of the saddle part among the front part of the seat plate are set to have a strength that can be easily recessed and deformed by the body pressure of a person sitting shallowly The thigh support portion is smoothly continuous with the normal surface and the saddle portion.

  According to a second aspect of the present invention, in the first aspect, the left and right thigh support portions of the front portion of the seat plate are allowed to be deformed by body pressure by forming a group of elongated slits, or Deformation due to body pressure is allowed by integrally molding an elastomer or other soft material so as to be continuous with the saddle portion.

  According to a fourth aspect of the present invention, in any one of the first to third aspects, the seat can be seated shallowly if a person standing on the floor is a middle waist with the thigh tilted, but if the person sits deeply, the foot is on the floor. The leg device is held at a height that cannot be reached, and the leg device is provided with step means for placing a foot in a state where a person sits deeply on the seat.

  Claim 5 specifies the seat plate. In other words, this seat plate has a saddle function that keeps the body from slipping forward even if a person sits shallow, and the upper surface of the part excluding the front part where the buttocks of a person sitting shallowly hit is viewed from the front. In addition, while it is a normal surface that is basically not uneven in a longitudinal side view, the left and right intermediate portions corresponding to the crotch of a person sitting shallowly in the front portion are in a state where the normal surface is extended to the front and The saddle part is hard to be deformed by human body pressure, and the thigh support parts located on the left and right sides of the saddle part among the front part of the seat plate are easily recessed by the body pressure of the person sitting shallowly. The deformable strength is set, and the thigh support portion is smoothly continuous with the normal surface and the saddle portion.

  In the present invention, “a normal surface that is basically free of irregularities in front view and longitudinal side view” means that even if there are slits or ribs, the surface or the upper surface of the ribs in the state where the slits are discarded. The continuous body support surface means that it is curved or flattened with a gentle curve without undulation, both in front view and in a longitudinal side view.

  In the present invention, when the person sits shallowly on the seat, the thigh support part is recessed and deformed by body pressure, so that the saddle part becomes relatively higher than the thigh support part. As a result, the saddle part is resistant to the body (stopper). Part) to prevent the body from slipping. Further, since the saddle portion is merely a state in which the normal surface is extended to the front, the saddle portion does not hit the user's crotch portion, and the user does not feel uncomfortable or uncomfortable. Moreover, since the thigh support part is in a state of being recessed downward from the normal surface and the saddle part, the thigh support part does not stick to the user's thigh from below, and there is no feeling of pressure on the thigh. .

  Furthermore, most of the upper surface of the seat plate except for the front part is a normal surface, so there is no phenomenon that the seat surface bites into the crotch part when a person is seated deeply. It is possible to accurately prevent people from feeling uncomfortable and uncomfortable in a state where they are in a state.

  Now, when a person sits shallowly on the seat, the person's buttocks rest only on the front of the seat, and most of the seating surface remains free. In other words, it is sufficient to provide the front part of the seat with the function of preventing the human body from slipping in a shallow sitting state, and even if a saddle part is provided only in the front part as in the present invention, Can be stopped properly.

  And most of the upper surface of the seat plate is a normal surface, and the thigh support portion constituting the front portion may be in the same form as the normal surface is extended to the front in the natural state before the body pressure is applied. Therefore, the seat plate can have the same or almost the same appearance as the normal form, so that the user does not have an image as if it is a straddling type and the user visually Can prevent disgust. That is, the chair / seat board of the present invention is recognized not as a straddling type but as a normal sitting type, and therefore it is easily accepted by women without resistance.

  In the end, the chair / seat of the present invention is a body in a state where it sits shallowly in the middle waist with the thigh tilted without giving the user discomfort due to appearance or discomfort / discomfort in use It is possible to accurately prevent the front slip. In addition, in order to support a human body (buttock) seated shallowly with the thigh tilted without a feeling of pressure, a certain amount of area is required in the recess. In this respect, if the saddle portion and the easily deformable left and right thigh support portions are formed in the range of about 5 to 10 cm (preferably about 8 cm) on the front side of the seat plate, it does not give a sense of incongruity when sitting deeply. It can be stably supported, and can support the body without giving a feeling of pressure to the thigh even when seated shallowly.

  Means for giving the thigh support part a deformation-allowing function can be embodied in various ways. However, if the structure weakened by the slit in claim 2 is adopted, a group of slits is formed at the time of molding, so that labor is required for processing. It is an advantage that can be manufactured without any problems. On the other hand, adopting the method of integrally forming the soft material in claim 2 has an advantage that the deformation of the thigh support portion can be ensured by selecting a material having an appropriate bending strength. In any case, by changing the thickness depending on the location or providing a rib, it is possible to realize a deformation that fits the user's thigh.

  The seat plate can be used with its upper surface exposed, but if the cushion is stretched as in claim 3, it is preferable that the user can soften the contact with the body.

  In the invention of claim 4, since a person can attach a foot to the floor and sit down shallowly on a chair, or put a foot on a step means and sit down deeply, it is user-friendly.

BRIEF DESCRIPTION OF THE DRAWINGS It is a whole external view of the chair which concerns on embodiment, (A) is a perspective view, (B) is a side view. It is a perspective view in the state where the seat board was exposed. It is a perspective view in the state where the seat plate was turned over and the intermediate member was omitted. (A) is a separated side view, (B) is a front view of a seat plate. It is a top view in the state where a seat cushion was omitted. (A) (B) is a perspective view of a seat board. (A) (B) is a perspective view of a seat board. (A) is a sectional view taken along the line VIIIA-VIIIA in FIG. 4 (B), and (B) is a sectional view taken along the line VIIIB-VIIIB in FIG. 4 (B).

(1). Outline of Chair Next, an embodiment of the present invention will be described. First, an outline of the chair will be described mainly based on FIGS. The chair 1 includes a leg device 1, a seat 2, and a backrest 3 as main elements. The leg device 1 has a general form in which a leg support 5 made of a gas cylinder is erected on a main body 4 having radial branch legs, and a caster is provided at the tip of each branch leg.

  The chair of this embodiment is a high position type, and the seat 2 is set to a height higher than that of a normal office chair. For this reason, when the user has a general height, when the user puts his / her foot on the floor, the user sits in a shallow posture with the thighs inclined and used. On the other hand, in the case of a general height, the legs do not reach the floor when trying to sit down deeply. Therefore, as shown in FIGS. 1 to 3, the outer cylinder 6 that wraps the leg support 5 in the main body 4 constituting the leg device 1. And a pipe footrest ring 7 as an example of a step means is fixed to the outer cylinder 6 via radial bars 8.

  A base 9 is fixed to the upper end of the leg column 5. For example, as shown in FIG. 3, the base 9 is in the form of a shallow box that opens upward, and an auxiliary bracket 10 is fixed inside the bush 9 (see FIG. 7) provided on the base 9 and the auxiliary bracket 10. Further, the upper end of the leg support 5 is fitted from below. Further, the base 9 is provided with a lifting operation lever 12 for releasing the lock of the leg column 5.

  For example, as clearly shown in FIG. 8, the seat 2 has a resin seat plate (seat inner shell) 14 and a cushion 15 arranged on the upper surface thereof, and the cushion 15 is a skin material (not shown) such as a cloth. )) From above. As conceptually shown in FIG. 4, the seat plate 14 is fixed to the base 9 via an intermediate member (outer shell) 16.

  The backrest 3 includes an outer shell 17 (see FIG. 1) constituting the back surface, an inner shell (not shown) fixed to the front surface of the outer shell 17, and a cushion (not shown) stretched on the front surface of the inner shell. The front surface of the cushion is covered with a skin material such as cloth. The outer shell 17 is fixed to the rear ends of the left and right tilt frames 18 arranged on the left and right sides of the base 9, and as shown in FIG. 3, the tilt frame 18 tilts rearward around the front end portion. The tilting frame 18 is elastically supported by a spring (not shown) disposed inside the base 9. That is, the chair of this embodiment is a rocking chair in which the backrest 3 tilts backward. Of course, the backrest 3 may be a fixed type that does not tilt backward.

(2) Details of Seat Plate Next, details of the seat plate 14 will be described with reference to FIG. As can be understood from FIGS. 5 and 6, the seat plate 14 includes a front portion 14 a against which a thigh hits when a person sits in a middle waist with the thigh inclined, and an intermediate portion 14 b positioned behind the front portion 14 a. And a rear part 14c located behind the intermediate part 14b, and in the state where the person is seated deeply, the body pressure of the person is mainly supported by the intermediate part 14b (the seat bone of the person sitting deeply is the intermediate part) 14b).

  A horizontally elongated dividing groove 21 is formed between the intermediate part 14 b and the rear part 14 c, and the intermediate part 14 b and the rear part 14 c are connected at the left and right outer portions of the dividing groove 21. The intermediate portion 14b has a plate-like shape excluding the left and right side portions, but the rear portion 14c has a rigid structure provided with a large number of ribs 22 crossing vertically and horizontally. For this reason, the intermediate part 14b can be deformed so as to sink downward.

  The left and right side portions of the intermediate portion 14 b are attachment portions 23 having ribs 23, and the attachment portions 23 are attached to the intermediate member 16. A large number of groups of intermediate slits 24 extending in the front-rear direction and the oblique direction are formed between the left and right attachment portions 23 of the intermediate portion 14b. For this reason, the intermediate portion 14b is lowered by the body pressure of a person sitting deeply. It can sink into (can be bent).

  Although the intermediate portion 14b has an intermediate slit 24 and a rib 23, the upper surface (body pressure support surface) on which the seated person is placed is basically gently curved upwardly concave in a front view and horizontally in a longitudinal side view. On the other hand, it is in a slightly tilted posture, and is a normal surface with no irregularities (undulations) in both the front view and the longitudinal side view.

  Similarly, although the rear portion 14c has a large number of ribs 22, the upper surface (body pressure support surface) of the group of ribs 22 is basically gently curved upwardly concave in a front view and has a high back in a longitudinal side view. It is a normal surface that is curved with a gentle curvature, and there are no wavy irregularities. When viewed from the front and rear dimensions of the intermediate portion 14b and the rear portion 14c, they occupy about 80% of the seat plate 14, and the upper surface in the range of about 80% is a normal surface.

  The front portion 14a of the seat plate 14 has a front-rear dimension of about 8 cm, and the left and right intermediate portions are saddle portions 25 in a state where the intermediate portion 14b is extended to the front as it is. The left and right outer sides are thigh support portions 26 on which the thighs of a person who sits shallowly hit. As can be understood from FIG. 6, the thigh support portion 26 is recessed downward by a certain size in a free state where no human body pressure is applied. Further, the front end of the saddle portion 25 is curled downward.

  There is no slit in the saddle portion 25, and therefore the saddle portion 25 has a structure that is not easily deformed by human body pressure (when viewed microscopically, the saddle portion 25 can also be elastically deformed by body pressure. However, the degree is negligible, and it is hard to say that it is greatly deformed by body pressure.)

  On the other hand, in the thigh support portion 26, a group of front main slits 27 in an inclined posture in plan view and a front and rear longitudinal front side slit located on the left and right outside thereof in a state continuous to the group of intermediate slits 24 of the intermediate portion 14b. 28 groups are formed. Due to the presence of the groups of the front slits 27 and 28, the thigh support portion 26 can be greatly dented and deformed so as to be pushed and bent by the body pressure of a person who is seated shallowly.

  As described above, the intermediate portion 14b and the rear portion 14c having the normal surface extend in a range of approximately 80% of the seat plate 14 in the front-rear direction. Therefore, the front portion 14a is in the front-rear direction of the seat plate 14. The range is about 20% (however, the front part 14a and the intermediate part 14ba are smoothly continuous and the boundary is not clear, so the numbers 80% and 20% are only a guide).

  As shown in FIG. 5, the front end of the seat plate 14 is aligned in a state that is almost a horizontally long straight line in a plan view, but is gently curved into a forward convex shape, or conversely, is gently curved into a forward concave shape. It is also possible. In this case, the protruding amount or the recessed amount may be about 3 cm, for example.

  As described above, the crotch support portion 26 of the seat plate 14 is slightly recessed downward, but the upper surface of the front portion of the cushion 15 does not reflect the recessed shape of the crotch support portion 26 and extends the normal surface as it is. You may make it the aspect taken out, and you may form the dent corresponding to the crotch support part 26 in the upper surface of a front part using a sheet-like material as the cushion 15. FIG. When the depression of the thigh support portion 26 does not appear in the cushion 15, the cushion 15 may be integrally formed with the seat plate 14 by an insert molding method.

  In the present embodiment, since the upper surface of the cushion 15 is in a normal state as a whole, it does not give the user the impression of “a chair that straddles” in appearance, and is therefore disgusting to the user in appearance. There is no feeling. There may be a type in which the seat plate 14 is exposed without using the cushion 15, but the depression of the thigh support portion 26 is slight in a state where the body pressure is not acting, so that the user is disgusted. I can't say that. Even when a seat cushion is used for the cushion 15, the degree of unevenness appearing on the front portion of the cushion 15 is very small, so that it does not give an aversion to the appearance.

  On the other hand, when the user sits shallowly with the middle waist with the thigh inclined, the thigh support portion 26 dents and deforms due to body pressure, as shown by the alternate long and short dash line in FIGS. 4 (B) and 8 (B). In addition, the relative height of the saddle portion 25 with respect to the thigh support portion 26 is increased. For this reason, the saddle part 25 acts as resistance against the crotch part of the user via the cushion 15, and as a result, it is possible to prevent forward slip and ensure the stability of the body. Moreover, since the saddle part 25 is the aspect which extended the normal surface part as it is, the saddle part 25 does not press a user's crotch part strongly, and does not give a user a discomfort.

  Further, when the user sits deeply, most of the body pressure is normally supported by the intermediate portion 14b and the rear portion 14c of the seat 2, and the user's thigh is from the front portion of the seat 2. In many cases, however, the intermediate part 14b and the rear part 14c of the seat plate 14 are loosely curved normal surfaces in the present invention. There is no phenomenon that the part is pushed up, and therefore, there is no sense of incongruity or discomfort for the user who is sitting down deeply.

(3). Others The present invention can be embodied in various ways other than the above embodiment. For example, the application target chair is not limited to a movable type, and can be applied to a fixed type chair such as an auditorium chair or a theater chair. The step means can be configured in a disk shape, for example. In the case of a chair of a type in which the relative posture between the seat and the leg device is constant (that is, not a rotating chair), it is possible to provide step means such as a footrest only under the seat.

  When forming a group of slits as deformation permitting means, it is also possible to form the slits in a state of opening forward. Further, as a method for facilitating the deformation of the thigh support part, it is also possible to make the thigh support part made of a soft material such as an elastomer, and to integrally mold the intermediate part and the saddle part by a two-color molding method. Of course, a slit and a soft material may be used in combination, or instead of or in addition to these, deformation can be facilitated by reducing the thickness. The thigh support part can be easily deformed by forming it in a zigzag shape (bellows shape) in a front view.

  The chair of the present invention can be actually manufactured and provided to the market. Therefore, it can be used industrially.

DESCRIPTION OF SYMBOLS 1 Leg apparatus 2 Seat 3 Backrest 7 Footrest ring as an example of a step means 9 Base 14 Seat plate 14a Front part 14b Intermediate part 14c Rear part 24 Intermediate slit 25 Saddle part 26 Thigh support part

Claims (5)

It is a configuration that holds a saddle function to hold the body so that it does not shift forward even if a person sits shallowly on the resin seat plate that constitutes the seat,
While the upper surface of the seat plate except for the front part where the buttocks of a person seated shallowly hits is a normal surface that is basically free of irregularities in front view and longitudinal side view,
The left and right intermediate parts corresponding to the crotch part of the person seated shallowly among the front part of the seat plate are saddle parts having a strength that is difficult to deform under the human body pressure with the normal surface extended toward the front. The thigh support portions located on the left and right sides of the saddle portion of the front portion of the seat plate are set to have a strength that can be easily recessed and deformed by the body pressure of a person who sits shallowly, and the thigh support portion is Smoothly continuous with the normal surface and saddle part,
Chair.   The front left and right thigh support part of the seat plate is allowed to be deformed by body pressure by forming a group of elongated slits, or an elastomer or other soft so as to be continuous with the normal surface and the saddle part The chair according to claim 1, wherein deformation by body pressure is allowed by integrally molding the material. A cushion covered with a skin material is stretched on the upper surface of the seat plate,
The chair according to claim 1. The seat is held by a leg device at a height that allows a person standing on the floor to sit shallowly if the thigh is tilted at the middle waist but does not reach the floor when sitting deeply. Is provided with a step means for placing a foot in a state of being seated deeply on the seat,
The chair as described in any one of Claims 1-3. A seat plate having a saddle function that holds the body so that it does not slip forward even if a person sits shallow,
While the upper surface of the portion excluding the front part where the buttocks of a person who sits shallowly hits is a normal surface with no irregularities in front view and vertical side view,
The left and right intermediate parts corresponding to the crotch part of the person seated shallowly in the front part are saddle parts having a strength that is not easily deformed by the human body pressure with the normal surface extended to the front. The thigh support portions located on the left and right sides of the saddle portion of the front portion of the plate are set to have a strength that can be easily recessed and deformed by the body pressure of a person who is seated shallowly, and the thigh support portion has the normal surface and the saddle. Smoothly continuous with the part,
Chair seat.

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