JP2014171724A - Legless chair - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a legless chair with high practicability by which hip joint stretching motions are easily performed in a daily life.SOLUTION: A legless chair includes: base parts 2, 3 having seating faces 6, 7 on which a user sits; a pair of leg-opening pads 4 which protrude from an edge face 20 of the base parts 2, 3 and are capable of changing an opening angle; and an angle determination unit for fixing the opening angle of the leg-opening pads 4. The depth e of the seating faces 6, 7 is between 879.7 mm and 2019 mm inclusive. The width f of the seating faces 6, 7 is between 317.3 mm and 930.8 mm inclusive.

Description

  The present invention relates to a seat chair, and more particularly to a seat chair having both a normal sitting use and a stretching exercise.

  Conventionally, stretch tools for improving the flexibility of the hip joint, particularly for maintaining the health of the elderly, are disclosed in, for example, Japanese Patent Application Laid-Open No. 2005-212327 (Patent Document 1) and Japanese Translation of PCT Application Publication No. 9-505743 (Patent Document 2). ).

  In Patent Document 1, the hip joint is easily stretched by sitting so as to sandwich a pair of open leg between a pair of knees and closing the knee against the force of the open leg lever to open. A possible hip stretch device is disclosed. Patent Document 2 discloses a stretch therapy apparatus that can train both the hip joint and the muscles of the back and the arm by the leg stretch component and the arm and back stretch component.

JP-A-2005-212327 JP-T 9-505743

  However, the devices disclosed in Patent Document 1 and Patent Document 2 are all dedicated to stretching exercises, and installing these devices in a living room for daily life usually ensures sufficient space. Difficult for reasons such as being unable to do so. For this reason, it is difficult to use these instruments frequently in daily life.

  In addition, the devices disclosed in Patent Document 1 and Patent Document 2 described above are configured on the assumption that the movement of repeatedly opening and closing the legs is performed. For this reason, the exercise | movement performed using these apparatuses has a high load with respect to a user, and it may become painful to continue over a long period of time.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a highly practical seat chair that can easily perform a stretching operation of a hip joint in daily life. Is to provide.

  A seat chair according to the present invention includes a base portion having a seating surface on which a user is seated, a pair of open leg pads that protrude from an end surface of the base portion and can change an open angle, and an open angle of the open leg pad. An angle determining unit for fixing. The base portion has a depth of 879.7 mm or more and 2019 mm or less. The width of the base portion is 317.3 mm or more and 930.8 mm or less.

  The above-mentioned seat chair can be used in daily life with the thigh expanded to the desired opening angle in contact with the opening leg pad by a set of opening leg pads whose opening angle can be changed by the angle determination unit. Easily stretch hip joints. Further, if the length and width of the depth of the base portion are set in a desired numerical range, the opening angle can be changed only by changing the position where the user sits while sitting, so that the load applied to the hip joint can be adjusted.

FIG. 4 is a schematic side view of a seat chair according to the present invention, with the backrest set to be substantially perpendicular to the seating portion. FIG. 2 is a schematic top view of the seating chair according to the present invention, similar to FIG. 1, with the open leg pad housed. FIG. 3 is a schematic top view of a seating chair according to the present invention similar to FIG. 2 but with an open leg pad protruding out of the storage part. FIG. 4 is a schematic top view of the seat chair according to the present invention, which is similar to FIG. 3, but is raised so that the pad portion of the leg pad of FIG. 3 is perpendicular to the seat surface. It is the schematic side view which looked at the seat of FIG. 4 from the same direction as FIG. It is the expansion schematic side view which looked at the state which protruded the leg pad of the seat chair of FIG. 3 especially on the outer side of the seating part from the same direction as FIG. It is a schematic side view of the seat chair by this invention set so that the angle with respect to the seating part of a backrest part might become an obtuse angle. FIG. 8 is a schematic side view of a seat chair according to the present invention similar to FIG. 7 but with a different arrangement of triangular cushions from FIG. It is a schematic side view of the seat chair by this invention set so that the angle with respect to the seating part of a backrest part might become a substantially flat angle. FIG. 10 is a schematic side view of a seat chair according to the present invention similar to FIG. 9 but with a different arrangement of triangular cushions from FIG. It is a schematic top view which shows each state when a user sits ahead of a seat surface (A) and when sits behind a seat surface (B). It is a schematic perspective view which shows the aspect of the flame | frame used as the frame | skeleton of the seat chair of FIG. It is a schematic perspective view which shows the aspect in which the seating part outer frame became two steps in FIG. It is the schematic which shows the ratchet which adjusts the opening angle of a pad rotating rod, and one set of pad rotating rods set so that it might become substantially parallel to each other. FIG. 15 is a schematic view showing a set of pad rotating rods set to enlarge the ratchet of FIG. 14 and to increase the opening angle of the pad rotating rods. It is a schematic perspective view which shows the state in which the open leg pad was accommodated in FIG. FIG. 13 is a schematic perspective view showing a state where the open leg pad protrudes to the outside of the seating portion in FIG. 12 and is set so that the opening angle is substantially flat. FIG. 13 is a schematic perspective view showing a state in which the open leg pad protrudes to the outside of the seating portion in FIG. 12 and is set so that the opening angle is approximately 0 °. It is a 1st schematic perspective view for demonstrating the expansion-contraction mechanism of an open leg pad. It is a 2nd schematic perspective view for demonstrating the expansion-contraction mechanism of an open leg pad. It is a 3rd schematic perspective view for demonstrating the expansion-contraction mechanism of an open leg pad. It is a 4th schematic perspective view for demonstrating the expansion-contraction mechanism of an open leg pad. It is a 5th schematic perspective view for demonstrating the expansion-contraction mechanism of an open leg pad. It is a 6th schematic perspective view for demonstrating the expansion-contraction mechanism of an open leg pad.

  Embodiments of the present invention will be described below with reference to the drawings. In the following drawings, the same or corresponding parts are denoted by the same reference numerals, and description thereof will not be repeated.

  Referring to FIG. 1, a seat chair 1 according to the present invention includes a base portion composed of a seating portion 2 as a first base portion and a backrest portion 3 as a second base portion, and a seating portion 2. It has mainly the open leg pad 4 accommodated in the inside and the triangular cushion 5 as a cushion part. The seating part 2 and the backrest part 3 are covered with a generally known soft cloth, and the cloth provides a comfortable sitting comfort to the user.

  The seating portion 2 is a portion that is placed on the floor during normal use, and the seating portion 2 has a seating surface 6 (first surface) on which the user sits on the upper surface. The backrest portion 3 is a portion that is used for leaning back even when the user is normally seated, and has a back surface 7 (second surface) that is a surface for leaning against the backrest portion 3. The seating part 2 and the backrest part 3 are integrated by an angle adjusting part (ratchet 22 in FIG. 12) arranged at a connecting part described later, and these constitute the main body of the seat 1. The backrest part 3 is arranged so as to be connected to the seating part 2 behind the seating part 2 (on the left side in FIG. 1 and the rear side in normal use).

  The seating surface 6 of the seating portion 2 faces upward in FIG. The seat portion 2 has a bottom surface (not shown) on the lower side of FIG. 1 so as to face the seat surface 6. The seat portion 2 is formed by the seat surface 6 and the bottom surface, and a region sandwiched between the both. Similarly, the back surface 7 of the backrest part 3 faces the right side of FIG. The backrest 3 has a back surface (not shown) on the left side of FIG. 1 so as to face the back surface 7. A backrest 3 is formed by the back surface 7, the back surface, and a region sandwiched between both.

  FIG. 2 is a view of the state in which the open leg pad 4 is housed in the seat portion 2 from above, and FIGS. 3 to 6 show the state in which the open leg pad 4 protrudes from the inside of the seat portion 2 to the outside. It is the figure seen from the upper part. With reference to FIGS. 2 to 6, one set (for example, two) of the leg pads 4 are arranged inside the seat portion 2. These open leg pads 4 can be stored in the pad storage portion 8 inside the seating portion 2, and can be protruded to the outside of the seating portion 2.

  The leg opening pad 4 that protrudes outside the seating portion 2 applies an appropriate load to the hip joint of the user by placing it on the inside of the leg (thigh) of the user seated on the seating portion 2, It can contribute to the improvement of muscle strength and flexibility of the hip joint. On the other hand, when the leg pad 4 is stored, the seat 1 can be used as a simple chair for sitting. The seat 1 can be used as an ordinary chair and can also be used as an instrument for exercising a hip joint, and thus can be used for various purposes.

  An end surface 20 of the seating portion 2 is formed on the outer periphery of the region sandwiched between the seating surface 6 and the bottom surface of the seating portion 2. The end face 20 has a side (the front side in FIG. 1 and a side facing the side) of the seat 1 from the front side (the side on the right side in FIG. 1 and the front side in normal use) of the side chair 20. ), The opening 19 is formed so as to extend to a relatively front position region. 3 to 5, the open leg pad 4 protrudes from the opening 19 in front of the seat 1 to the outside of the seat 2 (pad storage 8).

  Each of the one set (two) of the open leg pads 4 includes a pad portion 4a and a pad rotating rod 4b. The pad portion 4a is fixed to one end portion (the end portion on the side facing the outside of the pad storage portion 8) of the pad rotating rod 4b. The pad portion 4a has, for example, a flat appearance shape having a main surface, but the appearance shape is not limited thereto. Among the open leg pads 4, the pad portion 4 a particularly protrudes to the outside of the seat portion 2 (pad storage portion 8), and the pad portion 4 a is rotated and fixed so as to intersect the seat surface 6 substantially perpendicularly as will be described later. By doing so (see FIG. 4), the user can perform a stretching exercise of the hip joint by pressing the leg against the pad portion 4a.

  The pad portion 4a can contact the user's knees and thighs, and is a portion that presses the thighs and the like to train the muscles. The pad portion 4a has, for example, a flat shape, which makes it easy to contact the user's thigh and the like. The surface of the pad portion 4a is covered with a generally known soft cloth like the seating portion 2 and the like.

  For example, in FIGS. 3 to 6, the pad portion 4 a is a seat chair by a pad rotating rod 4 b extending in the depth direction of the seat portion 2 (for example, the direction connecting the front and the rear of the user, such as the vertical direction in FIG. 4). 1 protrudes from an opening 19 at the front. However, the extending direction of the pad rotating rod 4b can be changed. For this reason, for example, the pad rotating rod 4 b can be rotated so as to face the side of the seat 1, and the pad 4 a can be protruded from the side opening 19 of the seat 1.

  By rotating the pad rotating rod 4b, the angle (opening angle) at which the straight lines along the two pad rotating rods 4b intersect can be changed. Specifically, referring to the schematic perspective view of the frame in FIG. 12, one set (for example, two) of ratchets 21 (angle determination portions) are arranged in the seating portion 2 at intervals. Since the pad rotating rod 4b rotates along the seat surface 6 with the ratchet 21 as the rotation center, the pad portion 4a rotates along the seat surface 6 with the ratchet 21 as the rotation center. Therefore, the extending direction and the opening angle of the pad rotating rod 4b can be adjusted (in several steps depending on the function of the ratchet 21).

  The ratchet 21 has a function of fixing the pad rotating rod 4b so as to maintain the opening angle once determined so that the pad rotating rod 4b rotates from the opening angle formed by the pair of pad rotating rods 4b and the opening angle is not changed. Have

  3 and 6, the main surface of the pad portion 4 a is arranged along the floor surface. On the other hand, in FIG. 4 and FIG. 5, it arrange | positions so that the main surface of the pad part 4a may extend in a perpendicular direction with respect to a floor surface. By rotating the pad portion 4a around the central axis of the pad rotating rod 4b, the orientation of the main surface of the pad portion 4a can be switched between a direction along the floor surface and a vertical direction with respect to the floor surface.

  Here, for example, referring to FIG. 3, the width a on the front side 20a of the seating surface 6 of the seating portion 2 (for example, the right side of FIG. 1 and the front side in normal use as described above) 6 is preferably wider than the width b on the rear side 20b (see FIG. 1: as described above, for example, the left side in FIG. 1 and the rear side in normal use). In this way, the range of the seating surface 6 (that is, the portion located on the front side of the seating surface 6) on which the user can put the thigh when sitting is widened, so that the thigh can be expanded more comfortably. Can sit down. Further, since the pad portion 4a is stored on the relatively front side 20a of the pad storage portion 8, the storage space for the open leg pad 4 can be sufficiently secured by increasing the width a on the front side 20a.

  Referring to FIG. 1 again, the seat 2 is inclined with respect to the floor surface on which the seat 1 is installed so that the thickness c on the front side 20a is thicker than the thickness d on the rear side 20b. Yes. The thickness of the backrest portion 3 is not particularly limited. For example, the thickness of the end surface on the side farther from the seating portion 2 (upper side in FIG. 1) is closer to the seating portion 2 (lower side in FIG. 1). You may make it thicker than the thickness in an end surface.

  Since the seat surface 6 is tilted in this way, the user of the seat chair 1 should sit down so that the buttocks sink into a region sandwiched between the seat surface 6 and the back surface 7 on the rear side 20b of the seat surface 6. Can do. For this reason, it becomes possible to sit deeply behind the seat 1 and the sitting comfort is improved. Also, as described above, when the buttocks sink, the user can easily sit in a forward leaning posture, so by opening the thigh in this state, the load applied to the muscles of the hip joint is increased, and stretching exercise is performed. Can be easily performed. Here, since the triangular cushion 5 is more easily deformed than the seat surface 6 and the back surface 7, it does not hinder the user's forward tilting posture, but the triangular cushion 5 can be removed and used.

  In FIG. 1, the backrest portion 3 is set so as to be substantially perpendicular to the entire seating portion 2 as a whole. However, since the seat surface 6 is inclined with respect to the floor surface on which the seat 1 is installed as described above, even if the entire backrest 3 is substantially perpendicular to the entire seat 2, the seat The angle formed between 6 and the back surface 7 is an acute angle. Therefore, the user sitting on the seat 1 in the state of FIG.

  When the thigh is opened according to the opening angle of the open leg pad 4, the user can easily apply a load to the muscles of the hip joint. Such a load increases when seated in a so-called forward leaning posture. For this reason, when performing a stretching exercise using the open leg pad 4, the backrest 3 (back 7) of the seat 1 is set so that it is substantially perpendicular or acute with respect to the seat 2 (seat 6). It is preferable that

  That is, as shown by a dotted line in FIG. 1, the entire backrest portion 3 may be set so as to form an acute angle with respect to the entire seating portion 2. Since the seat surface 6 is inclined as described above, the angle formed between the seat surface 6 and the back surface 7 tends to be smaller than the angle formed by the entire backrest 3 with respect to the entire seat 2. Therefore, if the backrest part 3 is set as shown by a dotted line in FIG. 1, the angle formed between the seating surface 6 and the back surface 7 becomes a smaller acute angle, and the user is seated in a more forward leaning posture. In the seat 1 shown in FIG. 1, the angle formed between the seat surface 6 and the back surface 7 can be adjusted in this way. If the angle formed between the seat surface 6 and the back surface 7 is a smaller acute angle, for example, the load applied to the muscles of the hip joint of the user can be further increased as compared with the case where the angle is an obtuse angle. As described above, the load applied to the muscles of the user's hip joint can be adjusted by adjusting the angle formed by the seat surface 6 and the back surface 7.

  In FIG. 1, the backrest 3 is set so as to have an obtuse angle with respect to the floor on which the seat 1 is installed. A triangular cushion 5 (cushion portion) is disposed on the seat surface 6 of the seat 1 in FIG. The triangular cushion 5 is disposed behind the seat surface 6, that is, near the connection portion between the backrest 3 and the seat 2. The triangular cushion 5 is made of a generally known cloth, and has a generally triangular triangular shape.

  If the triangular cushion 5 is arranged as shown in FIG. 1, the surface having the largest area among the side surfaces of the triangular cushion 5 comes into contact with the buttocks of the user seated in a normal manner. At this time, since the position of the pelvis of the user can be easily fixed by the triangular cushion 5, the user can keep the posture in a good state.

  Next, referring to FIG. 7 and FIG. 8, the backrest 3 is set so as to be at an angle larger than the seat 1 shown in FIG. 1 with respect to the seat 2, that is, an angle larger than a right angle (so-called obtuse angle). May be. In other words, in this state, the back surface 7 is set so as to have an angle larger than a right angle with respect to the seat surface 6.

  7 and 8, the shape of the triangular cushion 5 is different from the shape of the triangular cushion 5 shown in FIG. That is, the triangular cushion 5 has three triangular planes on the surface thereof, and two triangular planes facing each other, and the plane shape constituting the side surface of the columnar portion other than the two triangular planes is a quadrangular shape. And has a surface. The two opposing triangles are preferably so-called isosceles triangles. Of the three surfaces, one surface 5a and the other surface 5b have substantially the same shape and size. Of the three surfaces, the remaining surfaces other than one surface 5a and the other surface 5b may have substantially the same size and shape as the one surface 5a and the other surface 5b, or one surface 5a. Further, the size and shape may be different from those of the other surface 5b.

  7 and 8, the triangular cushion 5 is joined (for example, stitched) to the seat surface 6 at a joint portion 50 on the seat surface 6. The joint portion 50 is formed, for example, by joining a ridge extending as a boundary portion between the one surface 5a of the triangular cushion 5 and the remaining surface to the seat surface 6 (in the width direction of the seat 1). Has been. Therefore, the above-mentioned ridge of the triangular cushion 5 is fixed on the seat surface 6 in the joint portion 50. Since the triangular cushion 5 is joined at the joint portion 50, the possibility of losing the triangular cushion 5 is reduced.

  The triangular cushion 5 can rotate in the depth direction of the seating surface 6 (the left-right direction in FIGS. 7 and 8) around the joint 50. Specifically, the triangular cushion 5 rotates so as to go to the entire right side of FIGS. 7 and 8 around the joint 50 fixed to the seat surface 6, and the triangular cushion 5 is placed on the seat surface 6. The placed state is shown in FIG. Further, the triangular cushion 5 rotates so as to go to the left side of FIGS. 7 and 8 around the joint portion 50 fixed to the seat surface 6 and the triangular cushion 5 is in contact with the back surface 7. 8.

  In FIG. 7, the remaining surface (the surface having the largest area) among the three surfaces constituting the side surface of the columnar portion of the triangular cushion 5 is in contact with the seat surface 6. In FIG. 8, the one surface 5 a of the triangular cushion 5 is in contact with the seat surface 6, and the other surface 5 b is in contact with the back surface 7. 7 and FIG. 8 differ in the arrangement | positioning aspect of the triangular cushion 5, and other points are the same as each other. The triangular cushion 5 may be a member independent of the seat surface 6 that is not joined to the seat surface 6, or may be detachable by a fastener, a hook, a button, or the like.

  With reference to FIGS. 9 and 10, the backrest portion 3 may be set so as to have an even larger angle with respect to the seating portion 2 than in FIGS. 7 and 8. 9 and 10, both the seating portion 2 and the backrest portion 3 are placed on the floor, and the angle of the entire backrest portion 3 with respect to the entire seating portion 2 (backrest angle) is about 180 °. Yes. The embodiment shown in FIGS. 9 and 10 is particularly suitable when the seat 1 is used for lying down.

  However, in the sitting chair 1, when the seating portion 2 and the backrest portion 3 are both placed on the floor as shown in FIGS. 9 and 10, the entire seating portion 2 and the backrest portion 3 are combined together. The base part (sitting part) can be considered and a user can be seated on this base part. That is, in the mode of FIG. 9 and FIG. 10, the backrest portion 3 on which the normal user abuts the back is used as the seating portion together with the seating portion 2, and the second surface 7 used as the normal back surface is used as the normal seating surface. Together with the first surface 6 used, it can be used as a single seating surface.

  Referring to FIG. 9, the depth e of the seating surface combining the first surface 6 and the second surface 7 of the seat 1 is 879.7 mm or more and 2019 mm or less. Here, the depth e of the seat surfaces 6 and 7 is the rear from the front end portion (the front end portion of the first surface 6) of the single seat surface in which the first surface 6 and the second surface 7 are combined. To the end of the second surface 7 (the uppermost portion of the second surface 7 when this is used as the back surface).

  The width f of the seating surfaces 6 and 7 of the seat 1 is 317.3 mm or more and 930.8 mm or less. Here, the width f means a dimension in a direction corresponding to the right and left direction for a normal user, which intersects the depth on the seating surfaces 6 and 7. As described above, the width of the seating surface 6 may differ depending on the position on the seating surface 6 (for example, the width a on the front side and the width b on the rear side of the seating surface 6 shown in FIG. Is the same. In this case, the width f of the seating surfaces 6 and 7 here means the maximum width of the entire seating surfaces 6 and 7.

  The opening leg pad 4 of the seat chair 1 of the present embodiment is fixed by a ratchet 21 so that the opening angle of each of the pair of opening leg pads 4 is adjusted before use and the determined opening angle is maintained. . In this state, the user sits so that each of the two open leg pads 4 comes into contact with the inside of the thigh. Here, referring to FIG. 11, the opening angle formed by open leg pad 4 in FIGS. 11 (A) and 11 (B) is the same. However, when the user is seated in front of the seating portion 2 (seat surface 6) as shown in FIG. 11A, for example, the user is seated in the seating portion 2 (seat surface 6, as shown in FIG. 11B). The force applied to the hip joint JOT is larger than that in the case of sitting behind 7). This is because it is necessary to increase the opening angle formed by the pair of thighs when sitting forward as shown in FIG. 11 (A) compared to when sitting backward as shown in FIG. 11 (B). Because there is.

  In other words, if the leg pad 4 of the seat chair 1 is used, the load applied to the hip joint part simply by moving the seating position of the user forward or backward while maintaining the opening angle of the leg pad 4 once fixed. Can be adjusted. Basically, the user can stretch the hip joint without opening and closing the legs. For this reason, daily activities such as reading and watching TV can be performed by sitting on the chair 1 according to the present invention without performing a heavy load exercise using an exercise apparatus installed in a gym or the like for the purpose of stretching exercise. While living, you can easily do stretching exercise for a long time without getting tired.

  In order to make it possible to change the seating position of the user as described above, it is preferable that the seat surface 6 has a certain size. As shown in FIGS. 9 and 10, the depth e and the width f of the single seating surfaces 6 and 7 combining both the seating surface 6 and the rear surface 7 are, for example, dimensions when only the seating surface 6 is used as the seating surface ( Since the depth e and the width f of the seat surfaces 6 and 7 are determined as described above because the depth g and the width a) shown in FIG. , 7 has a very large space that allows the user to adjust the load according to the seating position.

  For example, if the depth e of the seat surfaces 6 and 7 is equal to or greater than the above minimum value, the effect of adjusting the load can be sufficiently obtained only by moving the seating position of the user forward or backward. If the depth e is equal to or less than the above maximum value, the chair 1 can be handled in daily life without excessively increasing the size of the chair 1 and desired effects can be obtained. Can be obtained. Further, for example, if the width f of the seat surfaces 6 and 7 is equal to or greater than the above minimum value, the user can comfortably perform a desired exercise while placing (spreading) the thighs on the seat surfaces 6 and 7. . Similarly to the above, if the width f is equal to or smaller than the maximum value, a desired effect can be obtained without extremely increasing the size of the seat 1.

  Note that the minimum value 879.7 mm of the depth e of the seating surfaces 6 and 7 is an average value of so-called sitting leg lengths of Japanese women 60 years of age or older (relatively small). If the depth e is at least 879.7 mm, even a relatively small person can perform a stretching exercise by pressing the vicinity of the ankle or toe against the open leg pad 4. The maximum value of the depth e of 2019 mm is twice the average value of the so-called sitting leg length of Japanese men (relatively large) between the ages of 18 and 29. If the depth e is 2019 mm, even a relatively large person can perform a stretching exercise in which the legs are opened so that the angle between both legs is about 180 ° in the direction of the depth e on the seating surfaces 6 and 7, for example.

  In addition, the minimum value 317.3 mm of the width f of the seating surfaces 6 and 7 is an average value of the so-called width of a Japanese woman over 60 years old, so if the width f is at least 317.3 mm, the comparison is made. Even a small person can use the seat 1 as a chair. Further, the maximum value 930.8 mm of the width f is twice the average value of so-called sitting and popliteal distances for Japanese men aged 18 to 29. If the width f is 930.8 mm, even a relatively large person can open the legs so that the angle formed by both legs in the direction of the width f is about 180 ° on the seat surfaces 6 and 7. You can perform a stretching exercise that sits like a thigh.

  However, in the seat 1 of the present embodiment, the depth g shown in FIG. 1 when only the first surface 6 is used as the seat surface (only the first base portion 2 is used as the seating portion) is the depth e described above. The width a shown in FIG. 1 may satisfy the above-described condition of the width f.

  If the pad rotating rod 4b protrudes from the storage portion 8 to the outside so that the pad portion 4a is positioned outside the pad storage portion 8 and the open leg pad 4 can be extended at a predetermined opening angle, for example, a user However, when the user sits forward as shown in FIG. 11A and wants to increase the load on the hip joint portion JOT, the user's thigh can be sufficiently applied to the pad portion 4a. For this reason, the user can perform a stretching exercise comfortably.

  9 and 10 differ from each other in the arrangement mode when the triangular cushion 5 is rotated around the joint portion 50 as in FIGS. 7 and 8, but all other points are the same. . In addition, when both the first surface 6 and the second surface 7 are used as seating surfaces as shown in FIGS. 9 and 10, the triangular cushion 5 may be obstructive in use, so that the triangular cushion 5 is not provided. The triangular cushion 5 may be configured to be detachable from the seat surface 6.

  As described above, the seat chair 1 has an acute angle, a right angle, an obtuse angle, or (almost) a flat angle as defined by the angle between the backrest portion 3 and the seating portion 2 (the angle between the back surface 7 and the seat surface 6). Can be adjusted. For this reason, the seat 1 can be comfortably used for various purposes.

  As described above, the seat surface 6 is slightly inclined with respect to the floor surface on which the seat portion 2 is installed, and the thickness of the lower portion of the backrest portion 3 (connection portion with the seat portion 2) is thinner than other portions. Therefore, even if the angle is about 180 °, a recessed portion is formed at the connection portion between the seat surface 6 and the back surface 7.

  In FIG. 10, the triangular cushion 5 is disposed in a recessed portion in the connection between the seat surface 6 of the seating portion 2 and the back surface 7 of the backrest portion 3 that are opened so as to be approximately 180 ° with respect to each other. Of the three surfaces constituting the side surface of the columnar portion of the triangular cushion 5, one surface 5a is in contact with the seat surface 6, the other surface 5b different from the one surface is in contact with the back surface 7, and the one surface 5a and The remaining surface different from the other surface 5b is positioned substantially on the same plane so as to smoothly connect the seat surface 6 (region away from the back surface 7) and the back surface 7 (region away from the seat surface 6). Be placed. Thus, the triangular cushion 5 has a substantially flat surface by connecting the back surface 7 and the seat surface 6 when the seat portion 2 and the backrest portion 3 of the seat 1 are set so as to form a substantially flat angle. It preferably has a shape that can be configured.

  In other words, the one surface 5a of the triangular cushion 5 can come into contact with a region in the region near the back surface 7 of the seat surface 6 that has a relatively large angle with the floor surface on which the seat 1 is placed. The surface 5b of the back surface 7 can abut on a region close to the seat surface 6 of the back surface 7 and a region having a relatively large angle with the floor surface on which the seat 1 is disposed. The remaining surface of the triangular cushion 5 extends so as to be substantially parallel to the floor surface on which the seat 1 is installed, and is separated from the region away from the back surface 7 of the seat surface 6 and the seat surface 6 of the back surface 7. It is possible to lie on the same plane with both of the regions. In other words, the remaining surface can be arranged so as to be substantially parallel to the floor surface. The triangular cushion 5 may have a shape that enables the above arrangement.

  As described above, the triangular cushion 5 fixed to the seat surface 6 and rotatable about the connecting portion with the seat surface 6 in the depth direction is arranged, so that a part of the body required by the user, such as a buttocks and a back. The triangular cushion 5 can be addressed to a user and a comfortable force can be applied to the user. For example, when sitting on the seat 1 in the mode shown in FIG. 1, the triangular cushion 5 is deformed so as to follow a curve drawn by the surface of the user's buttocks and abuts against the buttocks. The interposition of the triangular cushion 5 prevents a gap between the buttocks and the back surface 7, so that the sitting comfort is improved as compared with the case where the triangular cushion 5 is not present.

  Hereinafter, an example of the frame constituting the seat 1 will be described with reference to FIGS.

  Referring to FIG. 12A, the frame constituting the seating portion 2 of the seat 1 has a strength by suppressing the deformation of the seating portion outer frame 2a that forms the outer shape of the seating portion and the seating portion outer frame 2a. It has mainly the seating part pipe 2b to raise. The seating portion outer frame 2a has a planar shape similar to the planar shape of the seating portion 2 (seat surface 6 and bottom surface), and the width on the front side 20a (see FIG. 1) of the seating portion 2 (seat surface 6) is the rear side. It is wider than the width at 20b (see FIG. 1). The seating portion pipe 2b extends from one side of the seating portion outer frame 2a so as to reach the other side facing the one side of the seating portion outer frame 2a (that is, in the width direction of the seating portion outer frame 2a). Exist.

  In one of the seating portion pipes 2b (usually, the foremost seating portion pipe 2b), a pair of ratchets 21 with a distance h from each other, for example, in the center in the direction in which the seating portion pipe 2b extends. Is formed. Each ratchet 21 is connected to one end (inside of the chair 1) of the storage portion rotating rod 8a by a generally known means. An end 8b opposite to the end connected to the ratchet 21 of the storage portion rotating rod 8a (outside of the chair 1) is fitted into the pad rotating rod 4b shown in FIG. In this way, the storage portion rotating rod 8a and the pad rotating rod 4b are connected. That is, the pad rotating rod 4b is fixed to the ratchet 21 so as to be substantially rotatable about the ratchet 21 in the direction along the seating surface 6. Here, in particular, the storage portion rotating rod 8a is inserted into the pad rotating rod 4b from the end 4c of the pad rotating rod 4b (the end opposite to the end to which the pad portion 4a is connected).

  On the other hand, the backrest 3 of the seat 1 has a backrest outer frame 3a that forms the outer shape of the backrest and a backrest pipe 3b as in the case of 2a and 2b.

  In FIG. 12, the angle formed by the seating portion outer frame 2a and the backrest portion outer frame 3a is substantially a right angle. The angle between the two is adjusted by a set of ratchets 22 (angle adjusting unit), thereby adjusting the angle (in several steps depending on the function of the ratchet 22) as shown in FIGS. 1 and 7-10. can do. The set of ratchets 22 is disposed between the seating portion 2 and the backrest portion 3, in other words, at the connecting portion between the seating portion 2 and the backrest portion 3, and the seating portion 2 and the backrest portion 3 (seat surface 6 and The angle formed with the back surface 7) can be adjusted. The adjustment of the angle as shown in FIGS. 7 to 10 is performed by controlling the operation of the ratchet 22 by using the lever 9 of FIG.

  Referring to FIG. 13, the seating portion outer frame 2 a may be arranged so as to be two-tiered in the vertical direction of the drawing, particularly on the front side of the seating portion 2 (to have a two-layer structure). In this case, the upper seat portion outer frame 2 a and the lower seat portion outer frame 2 a are fixed by the fixing portion 11. The seating portion outer frame 2a is arranged on the front side of the seating portion 2 so as to overlap two steps, but on the rear side of the seating portion 2, only one step of the seating portion outer frame 2a is arranged. In this way, as shown in FIG. 1, the thickness c on the front side 20a of the seating portion 2 is made thicker than the thickness d on the rear side 20b, and the floor surface on which the seat 1 is installed. Thus, the seat surface 6 of the seating portion 2 can be inclined. A region between the upper seating portion outer frame 2 a and the lower seating portion outer frame 2 a becomes the pad storage portion 8, and the ratchet 21 and the like are arranged in the pad storage portion 8. In addition, in FIG. 14-18 demonstrated below, the upper seating part outer frame 2a is not described for convenience of explanation.

  Referring to FIG. 14, the ratchet 21 can adjust the arrangement of the set of the storage unit rotating rod 8 a and the pad rotating rod 4 b so that they are substantially parallel to each other. Referring to FIG. 15, the ratchet 21 can arbitrarily adjust the angle (opening angle) formed by the set of the storage portion rotating rod 8 a and the pad rotating rod 4 b. FIG. 15 is an enlarged view of the ratchet 21 of FIG.

  Referring to FIG. 16, when one set of open leg pads 4 is stored in pad storage portion 8 (see FIG. 2), most of storage portion rotation rod 8a is stored inside pad rotation rod 4b. The sum of the lengths of the storage portion rotating rod 8a and the pad rotating rod 4b is shortened. On the other hand, with reference to FIGS. 17 and 18, the pad portion 4 a of the pair of open leg pads 4 is attached to the seat portion 2 by pulling out most of the storage portion rotating rod 8 a from the inside of the pad rotating rod 4 b. It will be in the state which protruded outside. FIG. 17 shows a state in which each set of ratchet 21 is adjusted so that the angle formed by one set of pad rotating rods 4b is 180 °, and FIG. 18 shows that one set of pad rotating rods 4b are substantially parallel. Thus, each of the pair of ratchets 21 is in an adjusted state. In FIGS. 17 and 18, since the accommodating portion rotating rod 8a is hardly accommodated inside the pad rotating rod 4b, the total length of the accommodating portion rotating rod 8a and the pad rotating rod 4b is larger than that shown in FIG. It is getting longer.

  Next, with reference to FIGS. 19 to 24, a mechanism for adjusting the total length of the storage portion rotating rod 8a and the pad rotating rod 4b will be described.

  Referring to FIGS. 19 to 21, pad rotating rod 4 b and storage portion rotating rod 8 a of open leg pad 4 both have a hollow cylindrical shape (pipe shape). The outer circular diameter l formed by the cross section of the pad rotating rod 4b is larger than the outer circular diameter m formed by the cross section of the storage portion rotating rod 8a. In particular, the inner circular diameter (inner diameter) formed by the cross section of the pad rotating rod 4b is larger than the diameter m of the storage portion rotating rod 8a. For this reason, the accommodating portion rotating rod 8a can be inserted into the pad rotating rod 4b.

  A hole 42 is formed in a part of the outer peripheral surface of the cylindrical portion of the pad rotating rod 4b. Referring to FIGS. 19 and 20 in particular, another cylindrical pipe 4d is inserted and fixed inside the pad rotating rod 4b. FIG. 20 shows the pad rotation rods 4b of the set (two) of the open leg pads 4 installed on the seat chair 1.

  A hole 41a and a hole 41b are formed in part of the outer peripheral surface of the cylindrical portion of the storage portion rotating rod 8a. These holes 41a and 41b are preferably formed so as to overlap in plan view, and the inner diameter of the hole 41a is preferably larger than the inner diameter of the hole 41b. In this way, the pin 33 can be penetrated through the hole 41a and the hole 41b. A spring 34 is attached to the pin 33 penetrating the inside of the housing portion rotating rod 8a through the holes 41a and 41b. The spring 34 is disposed inside the housing portion rotating rod 8a. Due to the elastic force of the spring 34, the pin 33 is biased so that the head 33a of the pin 33 protrudes from the side surface of the storage portion rotating rod 8a.

  Referring to FIG. 22, cylindrical pipe 4d has a hollow cylindrical shape, and its length in the extending direction is shorter than pad rotating rod 4b. The outer circular diameter (outer diameter) formed by the cross section of the cylindrical pipe 4d is smaller than the inner circular diameter (inner diameter) formed by the cross section of the pad rotating rod 4b. For this reason, the cylindrical pipe 4d can be inserted into the pad rotating rod 4b.

  A groove 4e is formed in a part of the cylindrical portion of the cylindrical pipe 4d. The groove 4e starts from one end portion 4f of the cylindrical pipe 4d and extends along the extending direction of the cylindrical pipe 4d. Further, the groove 4e is bent at the groove bending portion 31 and intersects with the extending direction of the cylindrical pipe 4d in the cylindrical portion (in the circumferential direction), and is a groove end point that is one point on the outer periphery of the cylindrical portion. It extends to 32. As described above, the groove 4e has a substantially L-shape on the outer periphery of the cylindrical portion of the cylindrical pipe 4d. As shown in FIG. 20, two cylindrical pipes 4d shown in FIG. 22 are used for each of the two pad rotating rods 4b.

  The cylindrical pipe 4d is formed on the pad rotating rod 4b so that the hole 42 is disposed on the extension of the portion extending along the extending direction of the cylindrical pipe 4d from the end 4f to the groove bent portion 31 in the groove 4e. It is preferably set.

  Referring to FIG. 23A, the pin 33 has a pin main body portion 33b and a pin small diameter portion 33c, and the top of the pin main body portion 33b is formed as a pin head 33a. The pin head 33a has a diameter small enough to be fitted into the groove 4e. The pin small-diameter portion 33c has a diameter that can be inserted into the hole 41b of the pad rotating rod 4b.

  A pin groove 33d is formed in a part of the side surface of the pin main body portion 33b. The pin groove 33d is formed along the outer periphery of the side surface. The cross-sectional shape of the pin groove 33d, particularly in a region XXIIIB surrounded by a round dotted line, is as shown in FIG.

  Referring to FIG. 24, the spring 34 includes a first spring portion 34a and a second spring portion 34b connected to the first spring portion 34a via a bent portion 34c. The first spring portion 34a includes two linear spring bodies that extend so as to face each other with a gap therebetween. The pin 33 and the spring 34 are connected by the two linear spring bodies being fitted into the pin groove 33d so as to sandwich the pin main body portion 33b. When a force is applied to the pin head 33a, the bent portion 34c is bent, and an elastic force is generated so that the spring 34 returns to its original shape. Due to this elastic force, an urging force is applied to the pin 33 so that the position of the pin head 33 a is restored. That is, a force is always applied to the pin head 33a so as to protrude outwardly from the storage portion rotating rod 8a.

  Referring to FIG. 19 again, with the pin head 33a passing through the hole 41a, the storage portion rotating rod 8a is fitted into the pad rotating rod 4b. At this time, the pin head 33a protrudes from the hole 42 to the outside of the accommodating portion rotating rod 8a (through the groove 4e from the right to the left in FIG. 19 and on the extension of the groove 4e). In this state, the total length of the storage portion rotating rod 8a and the pad rotating rod 4b is shortened. This state is a state where the open leg pad 4 is housed in the pad housing portion 8 as shown in FIGS.

  On the other hand, by moving the storage portion rotating rod 8a in the direction of pulling out from the inside of the pad rotating rod 4b, the pin head 33a moves along the groove 4e along the extending direction of the pad rotating rod 4b from the left side of FIG. Let us consider a state in which the groove proceeds to the right and reaches the groove bending portion 31. This state is, for example, the state shown in FIG. 3 in which the sum of the lengths of the storage portion rotating rod 8a and the pad rotating rod 4b is long and the pad portion 4a is arranged along the floor surface. Further, by rotating the pad rotating rod 4b around the axis with respect to the housing rotating rod 8a, the pin head 33a extends in a direction intersecting the extending direction of the groove 4e (between the groove bent portion 31 and the groove end point 32). )) And the state where the groove end point 32 is reached is considered. In this state, the total sum of the lengths of the storage portion rotating rod 8a and the pad rotating rod 4b is increased, and the pad portion 4a is arranged along the vertical direction with respect to the floor surface, for example, FIGS. This is the state shown in FIG. That is, since the groove 4e has an L shape, the pad rotating rod 4b defines a moving direction and a moving range when the pad rotating rod 4b moves along the axial direction (extending direction) of the storage portion rotating rod 8a. 4b is rotated in the direction (circumferential direction) along the circumference forming the cross section of the pad rotating rod 4b with respect to the housing portion rotating rod 8a, and the pad rotating rod 4b of the pad rotating rod 4b in the operation of changing the orientation of the main surface of the pad portion 4a. It is possible to define the moving direction and moving range.

  Although there is a part which overlaps with embodiment mentioned above, the characteristic structure of this invention is enumerated below.

  (1) A seating chair 1 according to the present invention projects from a base part (sitting part 2 and backrest part 3) having seating surfaces 6 and 7 on which a user is seated, and an end face 20 of the base parts 2 and 3, A set of open leg pads 4 capable of changing the opening angle, and an angle determination unit (ratchet 21) for fixing the opening angle of the open leg pad 4 are provided. The depth e of the seat surfaces 6 and 7 is 879.7 mm or more and 2019 or less, and the width f of the seat surfaces 6 and 7 is 317.3 mm or more and 930.8 mm or less.

  If the dimensions (depth e and width f) of the seat surface 6 (seat surfaces 6 and 7) are determined as described above, the load on the seat surface 6 (seat surfaces 6 and 7) is adjusted by the user according to the seating position. It will have enough space to be able to do. Further, for example, the user can repeatedly open and close the thigh by simply moving the seating position forward or backward after adjusting the opening angle of the leg pad 4 to a desired value. In addition, the load applied to the user's hip joint can be adjusted. From the above, the sitting chair 1 can be used as a simple chair, and can also be used as an instrument for easily performing a stretching exercise while performing daily life.

  (2) The base portions 2 and 3 of the seat 1 are composed of a first base portion (sitting portion 2) having a first surface 6 as a seating surface on which the user is seated, and the user touching the back. And a second base portion (backrest portion 3) having a second surface 7 as a back surface in contact therewith and connected to the first base portion. An angle adjusting portion (ratchet 22) that is arranged at a connection portion of the first and second base portions (the seat portion 2 and the backrest portion 3) and adjusts an angle formed by the first surface 6 and the second surface 7; It is preferable to further comprise. The angle adjusting unit 22 can be adjusted so that the angle formed by the first surface 6 and the second surface 7 is an acute angle.

  If the angle formed between the seating surface (first surface) 6 and the back surface (second surface) 7 is set to a smaller acute angle by the ratchet 22, for example, the muscle of the user's hip joint as compared with the case where the angle is an obtuse angle The load applied to the can be further increased. As described above, the load applied to the muscles of the user's hip joint can be adjusted by adjusting the angle formed by the seat surface 6 and the back surface 7.

  (3) The seat chair 1 of the above (2) uses the angle adjustment unit 22 to adjust the angle formed between the seat surface (first surface) 6 and the back surface (second surface) 7, The first surface 6 and the second surface 7 can be used together as a single seating surface 6, 7 on which a user is seated.

  By using the first surface 6 and the second surface 7 together as the seating surfaces 6 and 7, the depth e of the seating surfaces 6 and 7 is particularly increased, so that only the seating surface 6 is used as the seating surface. Compared with the case of using, the seating position (that is, the load applied to the muscles of the user's hip joint) on the user's seat surfaces 6 and 7 can be adjusted in a wider range.

  (4) The pair of open leg pads 4 of the seat chair 1 of the above (2) or (3) may be storable inside the first base part (pad storage part 8). In this way, the sitting chair 1 can be used as a normal chair by storing the open leg pad 4 inside the pad storage unit 8, and the seat can be opened by projecting the open leg pad 4 to the outside of the pad storage unit 8. The chair 1 can be used as an instrument for stretching exercise.

  (5) The thickness c of the first base portion 2 on the front side 20a of the seat surface 6 of the seat 1 of the above (2), (3) or (4) is the first on the rear side of the seat surface 6. It is preferable that the thickness is larger than the thickness d of the base portion 2. Since the seat surface 6 is tilted in this way, the user of the seat chair 1 should sit down so that the buttocks sink into a region sandwiched between the seat surface 6 and the back surface 7 on the rear side 20b of the seat surface 6. Can do. For this reason, it becomes possible to sit deeply behind the seat 1 and the sitting comfort is improved. Also, as described above, when the buttocks sink, the user can easily sit in a forward leaning posture, so by opening the thigh in this state, the load applied to the muscles of the hip joint is increased, and stretching exercise is performed. Can be easily performed.

(6) The width a of the front side 20a of the seating surface 6 is preferably wider than the width b of the rear side 20b of the seating surface 6. In this way, the range of the seating surface 6 (that is, the portion located on the front side of the seating surface 6) on which the user can put the thigh when sitting is widened, so that the thigh can be expanded more comfortably. Can sit down. Further, since the pad portion 4a is stored on the relatively front side 20a of the pad storage portion 8, a sufficient storage space for the open leg pad 4 can be secured by increasing the width a on the front side 20a. ) The thickness c of the first base portion 2 on the front side 20a of the seating surface 6 of the seating chair 1 of (6) above is thicker than the thickness d of the first base portion 2 on the rear side of the seating surface 6. Is preferred. If it does in this way, there exists an effect similar to said (5).

  (8) The seat chair 1 may have a cushion part (triangular cushion 5) joined at the joint part 50 on the seat surface. The cushion portion has a triangular prism shape, and the cushion portion can rotate in the depth direction of the seat surface 6 around the joint portion 50. By this cushion part, the said cushion part can be addressed to a part of the body requested by the user such as the buttocks and the back, and a comfortable force can be applied to the user. Since the clearance between the collar portion and the back surface is not formed by the intervention of the cushion portion, the sitting comfort is improved as compared with the case where the cushion portion does not exist.

  As mentioned above, the invention made by the present inventor has been specifically described based on the embodiment. However, the present invention is not limited to the above embodiment, and various modifications can be made without departing from the scope of the invention. Needless to say.

  The present invention is used for a seat chair that can be used as a sports equipment.

  DESCRIPTION OF SYMBOLS 1 Seat chair, 2 seating part, 2a Seating part outer frame, 2b Seating part pipe, 3 Backrest part, 4 Leg pad, 4a Pad part, 4b Pad rotation rod, 4c, 4f end part, 4d Cylindrical pipe, 4e Groove, 5 Triangle cushion, 6 Seat surface, 7 Back surface, 8 Pad storage part, 8a Storage part rotating rod, 9 Lever, 11 Fixing part, 19 Opening part, 20 End face, 20a Front side, 20b Rear side, 21, 22 Ratchet , 31 groove bending portion, 32 groove end point, 33 pin, 33a pin head, 33b pin main body portion, 33c pin small diameter portion, 33d pin groove, 34 spring, 41a, 41b, 42 hole, 50 joint portion.

Claims (8)

A base portion having a seating surface on which a user is seated;
A set of open leg pads protruding from the end face of the base part and capable of changing the opening angle;
An angle determining unit for fixing an opening angle of the leg pad,
The depth of the seating surface is 879.7 mm or more and 2019 mm or less,
The seat chair has a width of 317.3 mm or more and 930.8 mm or less. The base portion has a first base portion having a first surface as a seating surface on which a user is seated, and a second surface as a back surface on which the user abuts the back. A second base connected to the
An angle adjusting unit that is disposed at a connection portion between the first and second base portions and adjusts an angle formed between the first surface and the second surface;
The seat chair according to claim 1, wherein the angle adjustment unit is adjustable so that the angle is an acute angle.   By adjusting the angle using the angle adjusting unit, the first surface and the second surface can be combined and used as a single seat surface on which a user is seated. The listed chair.   4. The seat chair according to claim 2, wherein the pair of open leg pads can be accommodated inside the first base portion. 5.   5. The thickness of the first base portion on the front side of the first surface is thicker than the thickness of the first base portion on the rear side of the first surface. Seat chair as described in.   The seat chair according to any one of claims 2 to 4, wherein a width of a front side of the first surface is wider than a width of a rear side of the first surface.   The seat chair according to claim 6, wherein a thickness of the first base portion on the front side is larger than a thickness of the first base portion on the rear side. Having a cushion part joined at a joint on the first surface;
The cushion portion has a triangular prism shape,
The said cushion part is a seat chair of any one of Claims 2-7 which can rotate in the depth direction of the said 1st surface centering | focusing on the said junction part.

Images