JP2008000240A - Chair - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a chair preventing tiredness and lumbago of a person sitting thereon for a long period of time by seating the person so as not to lose the balance of the seated posture. <P>SOLUTION: This chair includes at least a chair body 11 having a seat part, and the chair body 11 is disposed with an abdominal pad 22 supporting the lower abdomen side of the seated person and preventing the losing of the balance of the seated posture, at an outward position rightly facing the infraumbilical position of the abdomen of the person sitting on a seat part 15. Alternatively, both corner parts 16 and 16 positioned on the rear side of the seat part 15 are disposed with lumbar pads 52 freely applying a lateral pressure to the pelvises of the seated person. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  [Technical Field] The present invention relates to a chair related to a chair that prevents a tired person or a back pain from occurring even when sitting for a long time by sitting a seated person so that a sitting posture does not collapse.

2. Description of the Related Art Conventionally, as a trimming instrument provided for improving a physical condition, those having various structures have been provided. Among such body trimming devices, as already shown in each of the following patent documents, ones that have a structure that can be used under a human body or sitting down like a chair have already been proposed. Has been.
Utility Model Registration No. 3106889 JP-A-2005-103215 JP 2002-360376 A Japanese Patent No. 2958756 JP-A-11-299591 JP 2002-012067 A

  Among these, the "manipulative device" disclosed in Patent Document 1 is a manipulative ball that applies a pressing force to a human body, and a holding body that partially accommodates a part of the manipulative ball in a holding groove and performs positioning thereof. It is said that the displaced skeleton can be returned to its original position by pressing a manipulative sphere against a specific part of the human body.

  In addition, the “pelvic orthosis chair” disclosed in Patent Document 2 is a pair of left and right side plates that are disposed so as to be narrowed downward and a back plate disposed between these side plates. It is said that the pelvic distortion can be corrected by sitting on the back plate with the back attached to the back plate and sandwiched between the side plates.

  In addition, the “pelvic support chair” disclosed in Patent Document 3 is formed by attaching a cushion that can be inflated with a fluid for sandwiching and wrapping a human pelvis part from the left and right sides, and inflating the cushion, This prevents the spread of the pelvis, reduces fatigue caused by tension in the muscles around the waist, prevents back pain, pelvis, and spinal cord misalignment. It can be maintained without any problems.

  Further, the “human body support device” disclosed in Patent Document 4 is applied to a chair for sitting, a seat for a vehicle, a mat for a bed, etc., and a human body widely and three-dimensionally disperses body pressure. In addition to reducing local pressure and reducing fatigue, it can gently absorb pressure during pressurization and vibration to reduce impact on the human body and suppress human sweating. It is supposed to be possible.

  In addition, the “cushion material” disclosed in Patent Document 5 is filled with a thermoplastic material having viscoelasticity that is highly viscous at room temperature, and having a viscosity that decreases below a predetermined temperature and has fluidity. The surface side is covered with a covering material, and its body pressure dispersion effect prevents, for example, bed slippage that tends to occur around the sacrum of a bedridden sick person. It can be made difficult.

  In addition, the “child seat” disclosed in Patent Document 6 includes a shoulder belt and a waist belt, and an impact force dispersion material including a gel material is disposed in the head contact area of the seat body. It is said that damage to the head during a car rear-end collision can be alleviated.

  However, all of the conventional techniques disclosed in Patent Documents 1 to 3 are intended to correct the lateral displacement of the human body, and are effective in relieving low back pain caused by, for example, intervertebral disc herniation. From the viewpoint of correcting the displacement of the lumbar vertebra in the front-rear direction, there is an inconvenience that a suitable structure is not necessarily provided.

  In addition, the conventional techniques disclosed in Patent Documents 4 and 5 both support the back side of the human body so as to sink into the cushion material side. Similarly, for example, low back pain caused by intervertebral disc herniation or the like. From the viewpoint of correcting the displacement of the lumbar vertebra in the front-rear direction, which is effective in relieving the problem, it is not necessarily provided with a suitable structure.

  Furthermore, the prior art disclosed in Patent Document 6 has a belly pad supported through a belt, and even if it is intended to regulate the movement of the human body in the front-rear direction, it is only a rear-end collision of a car. The purpose is to alleviate damage to the head at the time of an accident or the like, and it is not possible to correct the displacement of the lumbar spine in the front-rear direction.

  In view of the above-mentioned problems of the prior art, the present invention prevents the lumbar vertebra supporting the load applied from the spine of the seated person from slipping in the front-rear direction and sits so that the seating posture does not collapse, thereby sitting for a long time. The purpose is to provide a chair that prevents fatigue and back pain even if it is.

  The present invention has been made to achieve the above object, and includes at least a chair main body having a seat, and the chair main body has an outer side facing the lower abdomen position under the umbilicus of a seated person seated on the seat. The most important feature is that an abdominal pad that supports the lower abdomen side of the seated person and prevents the sitting posture from being collapsed is disposed at the side position.

  In this case, it is preferable that the seat is tilted forward so that the weight of the seated person can be naturally received on the side of the abdomen pad with its own weight. In addition, it is desirable that the belly pad is provided with a position moving mechanism that allows the seat pad to freely rebound in any direction in relation to the seating and withdrawal of the seated person.

  Further, waist pads that can freely apply a side pressure to the pelvis portion of the seated person can be freely arranged at both corners located on the rear side of the seat. In this case, it is desirable that the waist pad is provided with a front inclined surface portion that follows the pelvis shape in a surface area that contacts the pelvis part of the seated person.

  According to the first aspect of the present invention, the chair main body supports the lower abdomen side of the seated person at the outer position facing the lower abdominal part of the umbilicus of the seated seated person, and prevents the sitting posture from collapsing. Because it is equipped with an abdominal pad that can be freely attached and detached, it prevents the lumbar vertebra from slipping in the front-rear direction via the abdominal pad, without causing fatigue or low back pain for a long time under the correct sitting posture You can keep sitting.

  According to the invention of claim 2, since the seat portion is tilted forward, the weight of the seated person at the time of sitting can be naturally received on the side of the abdominal pad as the own weight, and the lumbar anteroposterior direction Can be prevented from shifting.

  According to the invention of claim 3, since the waist pads that can freely apply the side pressure to the pelvis portion of the seated person are disposed at both corner portions located on the rear side of the seat portion, the pelvis can be stabilized. You can continue to sit and support.

  According to the invention of claim 4, the stomach pad is provided with the position movement mechanism that can be repelled in any direction due to the seating and withdrawal of the seated person, so that the seated person sits down. By flipping the abdominal pad in front and returning it to its original position after sitting, it can be used conveniently, and a fourth angle 30 ° upward from the lower abdomen (lower umbilicus) of the seated individual. The abdominal pad can be set in the optimal direction toward the fifth lumbar vertebra and the sacral vertebra adjacent thereto.

  According to the fifth aspect of the present invention, the waist pad has the front inclined surface portion that conforms to the pelvis shape in the surface region that contacts the pelvis part of the seated person, and therefore corresponds to each front inclined surface portion. The pelvic part can be contacted and supported more stably.

  FIG. 1 is a plan view showing an example of the present invention, FIG. 2 is a side view of the example of FIG. 1, and FIG. 3 is an overall perspective view of the example of FIG.

  According to these drawings, the chair body 11 is connected and supported on the upper end side of the column portion 12 with, for example, five support arm portions 13 with casters 14 connected to the lower end side of the upright column portion 12. The seat portion 15 is formed with a backrest portion 17 connected to the seat portion 15 side and attached via a back-side column portion 18 that is directly raised from the rear portion side.

  In this case, as shown in FIG. 2, the seat portion 15 is attached to the support column portion 12 with the seating surface 15 a tilted slightly forward so that when the seated person 101 is seated. The position of the lower sacrum and the fourth lumbar vertebra 104 to the lower lumbar bone 104, the position of the lower abdomen 102 under the umbilicus and the position of the abdominal pad 22 are obliquely about 30 shown as a broken line in FIG. Therefore, the sitting posture can be set on the inclined line l. As a result, the curved lumbar vertebra receiving the spine load can be supported from the front, and the occurrence of back pain can be reduced.

  Further, the chair body 11 having the above-described configuration can be arbitrarily set at an outer position facing the lower abdominal portion 102 of the umbilicus of the seated person 101 seated on the seat surface 15a of the seat portion 15 as shown in FIG. The abdominal pad 22 attached to the advancing / retreating arm portion 44 connected via a position moving mechanism 23 that allows the seated person 101 to freely retreat in the right hand direction in the illustrated example. I have.

  In this case, the position movement mechanism 23 is connected to the seat portion 15 side, and is connected to the right side of the seat portion 15 so that the position moving mechanism 23 has an armrest base 25 with an armrest base 25, and a cross-section substantially disposed via the connection lever portion 24. A horizontal arm portion 26 having a circular shape and a rotating arm portion 34 that is connected to the horizontal arm portion 26 so as to freely rotate in the orthogonal direction.

  This will be described in more detail with reference to the illustrated example. The horizontal arm portion 26 is provided on the proximal end portion 26a side, with the distal end portion 26b side positioned in the front direction that is orthogonal to the connecting collar portion 24. In addition, a fastening member 28 such as a screw is fastened and connected to the connecting flange portion 24 through the through hole 27.

  In this case, the connecting collar portion 24 is provided with position adjusting holes 24a at a plurality of positions in the vertical direction, and the fixing material 28 is fixed through the position adjusting holes 34a to be horizontal. The connecting position in the vertical direction of the arm portion 26 can be adjusted.

  The rotating arm portion 34 is connected to the horizontal arm portion 26 via the base end portion 34a side under an arrangement relationship in which the tip end portion 34b side is inclined forward with respect to the horizontal arm portion 26. . In this case, the base end portion 34 a of the rotating arm portion 34 is formed in a cylindrical shape into which the distal end portion 26 b of the horizontal arm portion 26 can be inserted. Further, the turning arm portion 34 is connected to the horizontal arm portion 26 under an appropriate turning connection structure. In this case, the rotating connection structure is such that a coil spring is interposed between the base end portion 34a of the rotating arm portion 34 and the distal end portion 26b of the horizontal arm portion 26 so that the rotating arm portion 34 at a predetermined position is provided. After applying an external force to forcibly bounce off and sit down, it is possible to preferably employ one formed so as to automatically return to the original position by releasing the external force. In addition to the above, the rotation connecting structure has a position adjusting groove 35 cut into the lengthwise direction on the side of the distal end portion 26b of the horizontal arm portion 26, for example, as shown in FIG. A spherical body (not shown) whose base end portion 34a of the rotating arm portion 34 having a cylindrical shape is urged in a protruding direction provided on the inner peripheral surface thereof is rotatably fitted in the position adjusting groove 35, or the rotating arm portion It can also be formed by providing an appropriate position fixing structure such as screwing the 34 side to the horizontal arm 26 side at an appropriate position.

  On the other hand, the advancing / retreating arm portion 44 has its distal end portion 44b positioned in the depth direction (the lower abdomen 102 side of the seated person 101) that is orthogonal to the rotating arm portion 34, and the proximal end portion 44a side. Are arranged in a positional relationship connecting the tip end 34b side of the rotating arm 34.

  In this case, the advancing / retreating arm portion 44 includes a fixed arm portion 45 into which the distal end portion 34b of the rotating arm portion 34 is inserted and freely connected to move in the length direction thereof, and the fixed arm portion 45 in the front-rear direction. It is comprised with the advancing / retreating support arm part 46 connected freely to movement. Further, the fixed arm portion 45 includes an insertion hole 45a into which the distal end portion 34b of the rotating arm portion 34 is inserted, and the position of the advance / retreat arm portion 44 side can be moved along the insertion hole 45a. It has become. Note that the position of the forward / backward arm portion 44 side relative to the rotating arm portion 34 side can be fixed by tightening or loosening a fixing screw (not shown). Further, the position of the advance / retreat support arm portion 46 with respect to the fixed arm portion 45 is fixed by fixing a corresponding portion of the advance / retreat support arm portion 46 inserted into the fixed arm portion 45 with a fixing material 47 such as a screw or screwing together. This can be done by connecting.

  Further, the abdomen pad 22 attached to the distal end 44b side of the advance / retreat arm portion 44 is formed by giving an appropriate surface shape capable of supporting the lower abdomen 102 side of the seated person 101 as shown in FIG. ing. In this case, the abdomen pad 22 can be formed, for example, by applying a curved surface 22a that is slightly inwardly curved along the surface shape of the lower abdomen 102 of the seated person 101. Alternatively, the surface may be a result of a swelled pillow-shaped pad being crushed by the contact of the lower abdomen 102. The belly pad 22 may be a hard material, or may be one in which an appropriate elastic material or a gel-like elastic material having a certain degree of cushioning properties is enclosed.

  On the other hand, the waist pad 52 is disposed at both corner portions 16 and 16 located on the rear side of the seat portion 15 in order to apply a side pressure to each pelvic region 103 of the seated person 101.

  That is, each waist pad 52 has one end portion 56a and the other end portion 56b of the support portion 56 fixed in the lateral direction, which is the orthogonal direction, via the fixing portion 55 connected to the back column portion 18 side. In addition, for example, an appropriate sliding structure is provided, and the position thereof can be freely adjusted.

  In this case, as shown in FIG. 5, each waist pad 52 is formed with a front inclined surface portion 53 that is concavely curved so as to follow the shape of the pelvic region 103 in each of the surface regions that contact the pelvis region 103 of the seated person 101. In addition, by placing these front inclined surface portions 53 in contact with the pelvis region 103 of the seated person 101, it is possible to apply a side pressure to each contact region.

  Moreover, each waist pad 52 is filled with a gel-like elastic material (not shown) inside each front inclined surface portion 53, which is a surface area in contact with the pelvis portion 103 of the seated person 101, and the gel-like elastic material is The pelvic region 103 can be stably supported by the generated elastic force.

  Next, the operation and effect of the present invention will be described based on the illustrated example. The belly pad 22 rotates the rotating arm portion 34 with respect to the horizontal arm portion 26 disposed via the connecting collar portion 24. By using the position movement mechanism 23 that is freely connected, the seat occupant 101 can rebound before sitting and return to the original position after sitting, so that it can be used conveniently.

  In addition, in order to make the abdomen pad 22 face the lower abdomen 102 side of the seated person 101, loosen a position fixing screw (not shown) on the fixed arm part 45 side with respect to the distal end part 34b of the rotating arm part 34. Adjustment such as lateral movement is performed, and the abdominal pad 22 is set in the optimal direction from the lower abdomen 102 of the individual seated person 101 toward the fourth to fifth lumbar vertebrae, and the curved lumbar vertebra receiving the spine load is supported from the front. A seating posture in which the positions of the fourth lumbar vertebra 104 to the fifth lumbar vertebra and the sacral vertebra, the lower abdomen 102, and the abdominal pad 22 are positioned on an inclined line l shown as a broken line in FIG. It can be easily performed by tightening these position fixing screws so that the optimum position for the posture can be determined.

  After the abdomen pad 22 is directly opposed to the lower abdomen 102 side of the seated person 101 in this manner, the lower abdomen 102 of the seated person 101 is moved forward and backward with respect to the fixed arm 45. This can be supported by gently abutting on the side. At this time, when the seat portion 15 is tilted forward, the weight of the seated person 101 can be received on the side of the stomach pad 22 with its own weight as shown in FIG.

  On the other hand, the position of the horizontal arm portion 26 can be adjusted by adjusting the connection position on the base end portion 26a side with respect to the plurality of position adjustment holes 24a provided in the connection collar portion 24. The position of the belly pad 22 can be adjusted with respect to the seated person 101 having different positions. In addition, it is also possible to adopt a configuration in which the connecting collar portion 24, the armrest portion 25, the horizontal arm portion 26, the rotating arm portion 34, the advance / retreat arm portion 44, etc. are not individual but integrated or linked.

  After the position of the abdomen pad 22 is determined in this manner, when the seated person 101 is seated, the lower abdomen 102 side is supported by the curved surface 22 of the abdomen pad 22, resulting in fatigue or low back pain. Can sit for a long time without waking up.

  Further, the stomach pad 22 is disposed via the position movement mechanism 23 that can be repelled in any direction due to the seating / removal of the seated person 101, so that the seated person 101 is seated. The abdomen pad 22 is bounced away in the front and returned to its original position after sitting, so that it can be used conveniently, and the lower abdomen 102 of the seated person 101 can move from the lower abdomen 102 to the fourth and fifth lumbar vertebrae. The abdomen pad 22 can be set in the optimum direction toward the vertebra. In other words, the abdominal pad 22 can be brought into contact with the lower abdominal portion 102 under an inclination that hits the lumbar vertebra at a right angle. Can reduce the occurrence of low back pain.

  In addition, the chair body 11 is provided with waist pads 52 that can apply side pressure to the pelvic region 103 of the seated person 101 at both corner portions 16 and 16 located on the rear side of the seat portion 15.

  Therefore, in the seated person 101, each waist pad 52 attached to one end part 56a and the other end part 56b of the support part 56 has the weight of the upper body firmly attached to the sacroiliac joint surface part and the iliac part at both ends of the sacrum. By adjusting the position so that pressure is applied from the buttocks so as to be supported and seating on the seat surface 15a of the seat portion 15, the pelvic regions 103 corresponding to the respective front inclined surface portions 53 are abutted and supported. Can do.

  In addition, in the case where a curved surface is formed along the shape of the pelvic part 103 of the seated person 103 on each of the front inclined surface parts 53 that are surface areas that come into contact with the pelvic part 103 of the seated person 101, As shown in FIG. 5, the pelvic region 103 corresponding to 53 can be supported and supported more stably. Therefore, fatigue of the facet joint can be reduced together with the abdominal pad 22 and the waist pad 52. In particular, when a gel-like elastic material (not shown) is enclosed in each waist pad 52, the pelvic region 103 is stably supported by a suitable side pressure accompanied by the elastic force generated by the gel-like elastic material. Thus, it is possible to continue sitting for a long time under a more correct sitting posture.

  The above is the description of the present invention based on the illustrated example, and the specific configuration is not limited thereto. For example, the chair main body 11 is shown as an office chair provided with a support leg portion 13 connected to the support column portion 12 as an example. It may be a thing. Further, if the stomach pad 22 can be supported by facing the lower abdomen 102 side of the seated person 101, it can be attached via a band directly connected to the seat part 15 side or the column part 12 side, for example. .

  Further, the chair body 11 may be provided with only the belly pad 22 that does not include the waist pad 52. Further, as long as the waist pad 52 can be brought into contact with the pelvic part 103 in a plane, the three-dimensional shape and the surface size can be appropriately selected and employed. Furthermore, an appropriate elastic material other than the gel elastic material can be incorporated in the waist pad 52.

The top view which shows an example of this invention. The side view about the example shown in FIG. The whole perspective view about the example shown in FIG. Explanatory drawing which shows the positional relationship of a seated person's lower abdomen and a stomach pad at the time of seating. Explanatory drawing which shows the positional relationship of a seated person's pelvis site | part and a waist pad at the time of seating.

Explanation of symbols

DESCRIPTION OF SYMBOLS 11 Chair main body 12 Support | pillar part 13 Supporting leg part 14 Caster 15 Seat part 15a Seat surface 16 Corner part 17 Backrest part 18 Back side support | pillar part 22 Abdomen pad 22a Curved surface 23 Position moving mechanism 24 Connecting collar part 24a Position adjustment hole 25 Armrest Portion 26 horizontal arm portion 26a base end portion 26b tip end portion 27 through hole 28 fixing material 34 rotating arm portion 34a base end portion 34b tip end portion 35 position adjusting groove 44 advancement / retraction arm portion 44a base end portion 44b tip end portion 45 fixed arm portion 45a Insertion hole 46 Advance and retreat support arm part 47 Fastening material 52 Lumbar pad 53 Front inclined surface part 55 Fixing part 56 Supporting part 56a One end part 56b Other end part 101 Seated person 102 Lower abdominal part 103 Pelvic part 104 Lumbar vertebra l Lumbar spine and lower abdomen Inclined line connecting the pad for padding

Claims (5)

  A chair body having at least a seat part, the chair body supporting the lower abdomen side of the seated person at an outer position facing the lower abdomen position under the umbilicus of the seated person sitting on the seat part; A chair provided with an abdomen pad that prevents collapse of the sitting posture.   2. The chair according to claim 1, wherein the seat portion is disposed so as to be tilted forward so that the weight of the seated person can be naturally received on the side of the abdomen pad as a self-weight.   The waist part which can give the side pressure to the seated person's pelvis part is arrange | positioned freely in both corner parts located in the rear part side of the said seat part, The position adjustment is freely arrange | positioned. Chair.   The chair according to any one of claims 1 to 3, wherein the belly pad is provided with a position moving mechanism that allows the seat pad to freely retreat in any direction due to the seating and withdrawal of the seated person. . The chair according to any one of claims 1 to 4, wherein the waist pad has a front inclined surface portion that follows the pelvis shape in a surface region that contacts the pelvic part of the seated person.

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