JP6535229B2 - Back side sitting bed - Google Patents

Description

  The present invention relates to a supine supine bed adapted to maintain an optimal sleeping posture in either supine or lateral position according to the physical characteristics of the user, and more particularly, to a smooth surface between supine and lateral position. It relates to a supine supposing position corresponding bed that realizes turning over.

  Conventionally, in order to maintain a comfortable sleeping posture and obtain appropriate sleep and sleep states, various beddings with different elasticity of each part of the bed have been proposed. For example, coil springs are arranged in a rectangular bag. The plurality of spring units can be accommodated in the unit accommodation space of the bed, and the spring units having different spring constants can be accommodated in the unit accommodation space according to the preference and physical characteristics of the user, and the elasticity of each part of the bed is different. Known beds are known (Patent Document 1, Patent Document 2)

  In addition, in the lateral position, compared to the supine position, the shoulders and buttocks on the lower side of the user protrude, so the portions of the left and right side pockets A where the shoulders and arms meet in the lateral position are flexible materials The softness and sink amount of the central part of the bed corresponding to the shoulder ridge and the buttocks in the lateral reclining position and in the lateral reclining position corresponding to the covering cushion for the supine position (covering the side supine position) A mattress for supine supine position excluding the feeling of pressure on the shoulder and heel is known (Patent Document 4).

  However, the conventional bedding described above improves the static sleeping posture in the supine position and the lateral position, and does not take into consideration the dynamic sleeping posture for the ease of turning over. Therefore, the applicant of the present application proposes a method of adjusting the height of the pillow in which the height of the pillow is adjusted in accordance with the physical characteristics of the user so that smooth turning can occur between the supine position and the side position. And patent (Patent Document 5).

Patent No. 5227243 gazette Patent No. 11-56536 gazette Patent No. 3605334 gazette Patent No. 4517241 Patent No. 4024152

  According to the bed of Patent Document 1 and Patent Document 2, although the touch and feeling of use of each part of the bed can be adjusted according to the preference and feeling of the user, the temporary preference during awakening and the time of sleeping before going to bed It does not necessarily coincide with the amount of depression of each part from which an optimal sleeping posture can be obtained, and a sufficient sleeping effect can not be obtained. For example, if the elasticity of a part of the bed is made too hard to adjust the amount of sinking to a small degree according to the preference, the body pressure may change locally, and as a result, ischemia may occur in that part. It can cause pressure on the nerves and abnormalities in the posture of the spine and pelvis, resulting in back pain.

  In addition, even if each part of the bed is adjusted to a comfortable sinking amount for each of the supine position and the lateral position, circulation of lymph fluid and blood can be achieved by continuing to sleep in the same posture for a long time without considering ease of turning over. You may feel discomfort while sleeping, and you can not get a comfortable sleep.

  The mattress for side supine position described in Patent Document 3 sinks the part of the pocket A where the shoulder falls in the side down position, but the portion where the trochanter hits in the side down position does not sink, so The child is disturbed and can not smoothly turn from supine position to side position, and even if he turns over, the trochanter becomes high and the body trunk becomes unnatural sleeping posture not parallel to the floor surface.

  Also, depending on the user, the acrosome is not always in the position of the pocket A in the lateral position, and furthermore, the position of the pocket A is rather high when the pillow is adjusted high to the user whose spine is significantly curved. If the acrosome does not sink, the trunk in the lateral position is parallel to the bed surface and can not necessarily be prepared according to the physical characteristics of the user.

  The supine supine position mattresses described in Patent Document 4 have shoulder ridges and buttocks on the central row as performing lateral recumbence and supine position turning around the axis of the user's trunk on the central row of the bed. The depression is made in the area to increase the amount of sinking, but in actual turning, the floor surface is rolled to the left and right while the trunk is horizontal, so the position where the shoulder ridge and buttocks hit in the lateral decubitus position is the center It is in the non-sinking area outside the row, and in the lateral position, the acromion and buttocks become high, resulting in an unnatural sleeping posture in which the trunk does not become parallel to the bed surface.

  In addition, since a concave groove is provided in the central row area where the body hits in supine position, and the amount of sinking is larger than that on the left and right sides, the rotation produced by the body to turn from supine position to lateral position Power (hereinafter referred to as rolling resistance) is large, and eventually turns around while letting the hips and shoulders float again and again in the deeply sunk central row, and sleep awakening and fatigue caused by using muscles Was occurring.

  As described above, the conventional beddings described in Patent Literatures 1 to 4 improve only the static sleeping posture in the supine position and the lateral position, but this is awakening from the electroencephalogram during the non-REM sleep. It is because it was thought that turning over would be a hindrance to deep sleep because it was seen when turning over. However, in the conventional bedding whose static sleeping posture has been improved without considering turning over, there is a high possibility of continuing the same sleeping posture for a long time, and as a result, circulation of lymph fluid and blood in areas where body pressure concentrates As a result, there was a problem of impairing a comfortable sleep.

  According to Patent Document 5, the height of the pillow where the head rolls between the supine position and the lateral position is adjusted to make it easy to turn, but turning is mainly because the torso of the body is the movement on the whole bed. , Adjustment of the pillow height alone is not enough to achieve a smooth turn over.

  The present invention has been made in consideration of such conventional problems, and it is possible to obtain an optimal sleeping posture in the supine position and the lateral position according to the physical characteristics of the user, and to prevent sleep. The purpose is to provide a supine suppository bed that achieves a smooth turn over between a supine position and a side position.

  In addition, it is an object of the present invention to provide a supine supposing position corresponding bed which realizes smooth turning between supine position and lateral position without burdening the spine in any of the supine and lateral position sleeping postures.

In order to achieve the above-mentioned object, the supine supine corresponding bed according to claim 1 forms a unit accommodation recess which accommodates a large number of spring units in an exchangeable manner in the bed main body which supports the sleeping user, A bed that accommodates the spring unit of the spring constant adjusted to the physical characteristics of the user in each area of the unit accommodation recess, and adjusts the vertical sinking amount of each part of the bed main body, using the supine position Of a unit containing at least the central area of the central row where the person is located and the left side region of the left row and the right side of the right row where the user of the lateral position is located on the left and right of the central row The upper central region of the central region, in which the back of the supine user is located, and the lower central region, in which the buttocks are located One or more spring units whose spring constants are adjusted are exchangeably accommodated so as to be parallel to the floor surface which is the plane of the main body, and the shoulders of the user in the lateral recumbent position of the left side region and the right side region. The spring constant has been adjusted so that the central axis of the user's trunk in the lateral recumbent position is parallel to the floor surface in the upper side region where the peak is located and the lower side region where the large trochanter is located. The spring unit of the present invention is housed in a replaceable manner.

  The sleeping positions of the user in the left and right side are the left row and the right row on both sides of the central row different from the central row of the bed main body which is the sleeping position of the supine position. The user can be supported by a spring unit with an optimum spring constant which is adjusted according to the sleeping posture.

  The back of the supine user is supported near the dorsal side of the seventh thoracic spine and the buttocks near the dorsal side of the sacrum and is supported by spring units housed in the upper central region and the lower central region, respectively. The trunk center axis of the supine user accommodates the back and buttocks of the supine user by accommodating the spring unit of the spring constant adjusted to the physical characteristics of the user in the upper central area and the lower central area By supporting it, it becomes parallel to the heel floor surface. In addition, the central part of the trunk of the user of the left and right recumbent position accommodates the spring unit of the spring constant adjusted according to the physical characteristics of the user in the upper side area and the lower side area of each left and right row part Became parallel to the floor surface by supporting the shoulders and the trochanter of the user of the position.

   The torso central axis is the central axis of mechanical rotation inside the torso defined by the body surface, and the thorax center B, which is the middle point between the sternal stem and the seventh cervical lumbar process, and the superior forelimb It is a straight line connecting the pelvis center C which is an intersection point of quadrilateral diagonals connecting four points on the left and right and the left and right upper iliac crest. Since the central axis of the user's torso is parallel to the floor surface in both the supine position and the left and right recumbent sleeping positions, resistance to rolling between mutual movements is reduced, and smooth turning is realized.

The supine supine support bed according to claim 2 is disposed above the central row portion and has a height at which the inclination angle between the head and neck central axis and the trunk central axis of the supine user is approximately 15 degrees. A pillow having a width greater than or equal to at least the width between the left and right row portions is characterized in that the surface of the pillow on which the user's head can be placed from the supine position to the left and right lateral position is substantially flat.

  The head and neck central axis is a dynamic central axis of rotation within the head and neck defined by the body surface from the head to the trunk, and is the intersection point of the straight line connecting the forehead right and left and the straight line connecting the left and right of the occipital region It is a straight line connecting a certain head center A and a chest center B. When the supine user places his head on a pillow and the inclination angle between the head and neck central axis and the trunk central axis is approximately 15 degrees, the exit of the cervical nerve in the cervical spine opens most and the supine in the supine position The cervical nerve is not compressed and blood circulation is improved.

  Since the surface of the pillow on which the user's head is placed is substantially flat from the supine position to the left and right lateral decubitus positions, the user's head rolls without resistance when rolling over.

The supine supination position corresponding bed according to claim 3 is such that the head and neck central axis and the trunk central axis of the user in the lateral recumbent who put his head on a pillow are continuous along a straight line parallel to the stoma floor surface. It is characterized in that the spring units whose spring constants are adjusted are accommodated in the upper side area and the lower side area of the left and right row parts.

  By accommodating the spring units of the spring constant adjusted to the physical characteristics of the user in the upper side area and the lower side area of each row to support the shoulders and the large trochanters of the user in the lateral recumbent position Since the head and neck central axis and the torso central axis of the user in the left and right recumbent position are continuous along a straight line parallel to the toe floor surface, it is easy to roll the head and neck of the user and the torso simultaneously.

In the bed on the supine side according to claim 4 , a unit accommodation recess is formed inside the outer frame along the periphery of the bed body, and an elevator for raising and lowering the pillow is arranged in the opening above the outer frame. It is characterized by having set up.

  Since the lifting device having a predetermined height is disposed in the opening of the outer frame, the height of the pillow on the plane of the bed body can be adjusted except for the height of the lifting device.

The bed on the supine side according to claim 5 selects a spring unit having a spring constant approximate to a spring constant to be adjusted from at least two or more spring units having different spring constants for each area of the unit accommodation recess. , It accommodates in the said area | region .

By selecting any of the spring units from at least two or more spring units having different spring constants, it is possible to accommodate in each area the spring units whose spring constants have been adjusted according to the physical characteristics of the user.

The row side lying position corresponding bed according to claim 6 forms a unit accommodation recess which accommodates a large number of spring units in an exchangeable manner in the bed main body which supports the user while sleeping, and virtually sets each unit accommodation recess. A bed that accommodates the elastic spring unit according to the physical characteristics of the user in the area, and adjusts the vertical sinking amount of each part of the bed body, and is a central row where the user of the supine position is located A bed main body in which a unit accommodation recess having a size including at least a central region of the central row portion and a left side region of the left row portion where the user of the lateral recumbence is located on the left and right sides of the central row portion and a right side region of the right row portion In the upper central area where the back of the supine user of the central area is located, and the lower central area where the buttocks are located, and the toe floor where the central axis of the torso user is the plane of the bed body To As a row, as well as exchangeable accommodating one or more spring units with an adjusted elasticity and an upper side region of each lateral position of the user's acromion of the left side region and right side region is located And one or more spring units whose elasticity has been adjusted so as to be exchangeable in the lower side region where the large tally is located so that the central axis of the user's trunk in the lateral recumbent position is parallel to the floor surface It is characterized by

  The sleeping positions of the user in the left and right side are the left row and the right row on both sides of the central row different from the central row of the bed main body which is the sleeping position of the supine position. The user can be supported by a spring unit of optimum elasticity that is adjusted according to the sleeping posture.

  The back of the supine user is supported near the dorsal side of the seventh thoracic spine and the buttocks near the dorsal side of the sacrum and is supported by spring units housed in the upper central region and the lower central region, respectively. The trunk center axis of the supine user accommodates the back and buttocks of the supine user by accommodating the elastic spring unit adjusted to the physical characteristics of the user in the upper central area and the lower central area By supporting it, it becomes parallel to the heel floor surface. In addition, the central axis of the trunk of the user in the left and right recumbent position accommodates the elastic spring unit adjusted according to the physical characteristics of the user in the upper side area and the lower side area of each left and right row portion Became parallel to the floor surface by supporting the shoulders and the trochanter of the user of the position.

   The torso central axis is the central axis of mechanical rotation inside the torso defined by the body surface, and the thorax center B, which is the middle point between the sternal stem and the seventh cervical lumbar process, and the superior forelimb It is a straight line connecting the pelvis center C which is an intersection point of quadrilateral diagonals connecting four points on the left and right and the left and right upper iliac crest. Since the central axis of the user's torso is parallel to the floor surface in both the supine position and the left and right recumbent sleeping positions, resistance to rolling between mutual movements is reduced, and smooth turning is realized.

The row side lying position corresponding bed according to claim 7 is disposed above the central row portion and has a height that makes the inclination angle between the head and neck central axis and the trunk central axis of the user of the supine position approximately 15 degrees. A pillow having a width greater than or equal to at least the width between the left and right row portions is characterized in that the surface of the pillow on which the user's head can be placed from the supine position to the left and right lateral position is substantially flat.

  The head and neck central axis is a dynamic central axis of rotation within the head and neck defined by the body surface from the head to the trunk, and is the intersection point of the straight line connecting the forehead right and left and the straight line connecting the left and right of the occipital region It is a straight line connecting a certain head center A and a chest center B. When the supine user places his head on a pillow and the inclination angle between the head and neck central axis and the trunk central axis is approximately 15 degrees, the exit of the cervical nerve in the cervical spine opens most and the supine in the supine position The cervical nerve is not compressed and blood circulation is improved.

  Since the surface of the pillow on which the user's head is placed is substantially flat from the supine position to the left and right lateral decubitus positions, the user's head rolls without resistance when rolling over.

The supine supination position corresponding bed according to claim 8 is such that the head neck and trunk central axis and the trunk central axis of the user in the lateral recumbent position with the head on a pillow are continuous along a straight line parallel to the stoma floor surface. The spring unit whose elasticity is adjusted is accommodated in the upper side area and the lower side area of the left and right row portions.

  The elastic spring unit adjusted to the physical characteristics of the user is accommodated in the upper side area and the lower side area of each row to support the shoulders and large trochanters of the user in the lateral recumbent position Since the head and neck central axis and the torso central axis of the user in the left and right recumbent position are continuous along a straight line parallel to the toe floor surface, it is easy to roll the head and neck of the user and the torso simultaneously.

In the bed on the supine side according to claim 9 , a unit accommodation recess is formed inside the outer frame along the periphery of the bed body, and an elevator for raising and lowering the pillow is arranged in the opening above the outer frame. It is characterized by having set up.

  Since the lifting device having a predetermined height is disposed in the opening of the outer frame, the height of the pillow on the plane of the bed body can be adjusted except for the height of the lifting device.

The back-side supine correspondence bed according to claim 10 selects, for each area of the unit accommodation recess, a spring unit having elasticity similar to the elasticity to be adjusted, from at least two or more spring units having different elasticity. It accommodates in the said area | region .

By selecting any of the spring units from at least two or more spring units having different elasticity, the spring units having elasticity adjusted according to the physical characteristics of the user can be accommodated in each area .

The back-side supposing position corresponding bed according to claim 11 selects a spring unit that matches the lateral width of each area from at least two or more spring units having different lateral width in each area of the unit accommodation recess, It accommodates in the said area | region .

Just lateral width selects one of the spring unit from two or more different spring unit, accommodating the spring unit also depends width is changed the area of the same width of each region by physical characteristics of a user it can.

A supine supine bed according to claim 12 is characterized in that the entire surface of the bed body is covered with a protective pad that disperses the pressure received by the user from the bed body.

  The body pressure changing at the boundary of the spring units having different spring constants and elasticity is relieved by covering the boundary with the protective pad, and does not feel uncomfortable from the boundary or does not disturb the turning operation.

According to the invention of claim 1 or claim 6 , according to the physical characteristics of the user, the spring unit having an optimum spring constant and elasticity in accordance with the unevenness of each part of the body on the bed body which differs between the supine position and the left and right recumbent position. Can be placed as the amount of sinking into the bed body.

In addition, regardless of the physical characteristics of the user, all users in the supine and lateral static sleeping postures can be placed in such a way that the trunk central axis is parallel to the floor surface without excessive bending of the spine. It can be a proper sleep posture.

  In addition, regardless of the physical characteristics of the user, the rolling resistance between the supine position and the side position of all the users is reduced, so that the fatigue at the time of turning is less and the awakening is less. In addition, smooth overturning during overnight sleep circulates blood, lymph and joint fluid to promote thermoregulation and metabolism.

According to the invention of claim 2 or claim 7 , in the supine position, no load is placed on the user's cervical spine, and compression symptoms of the cervical nerve such as stiff neck and numbness of the limbs are avoided.

  In addition, since the head and the head roll smoothly on the surface of the pillow as well as the user's body, smooth turning over with the body and head synchronized is realized.

According to the invention of claim 3 or claim 8 , in the sleeping posture in the lateral recumbent position, the head and neck central axis does not incline with respect to the trunk central axis, so that compression does not occur in the cervical spine.

  In addition, since the head and neck central axis and the torso central axis are continuous in a straight line parallel to the bed surface, it is easy to synchronize and rotate the head and torso, and smooth turn over of the entire body including the head To be realized.

According to the invention of claim 4 or 9 , the height of the pillow can be adjusted without the user having to lift and lower the head by himself and replacing the pillow.

  In addition, the height of the pillow can be adjusted according to the physical features of the user without being restricted by the height of the lifting device.

According to the invention of claim 5 or claim 10 , the user simply selects from two or more prepared spring units without individually adjusting the spring constant and elasticity of the spring units housed in each area . The spring constant and the elastic spring unit adjusted according to the physical characteristics of the can be accommodated in each area .

According to the invention of claim 11 , the shoulders and the large trochanters of the user in the lateral recumbent position are accommodated in the upper side area and the lower side area even if the lateral width of the central row portion differs depending on the physical characteristics of the user. It can be supported securely by the spring unit, and the central axis of the user's trunk in the lateral recumbent position can be made straight in parallel with the heel floor surface.

According to the invention of claim 12 , there is no part where the body pressure changes rapidly on the bed surface, the nerve is compressed, a partial load is not applied to the surface of the body, and the turning resistance does not change significantly.

It is a disassembled perspective view of the supine supine position corresponding bed 1 which concerns on one embodiment of this invention. It is a perspective view of bed main part 4 in which unit accommodation crevice 3 was formed in outer frame part 2. FIG. FIG. 6 is a perspective view showing a state in which the spring unit 5 is accommodated in the unit accommodation recess 3. It is a perspective view which shows the state which mounts the pillow 6 on the bed main body 4. FIG. It is a top view which shows the relationship between the sleeping posture in a user's supine position and a lateral recumbent position, and the position on the unit accommodation recessed part 3. FIG. It is explanatory drawing which shows the measurement result which measured the relationship between the body part in the supine position of the user who mounted the head on the pillow 6 and the lateral recumbent position, and the position on the unit accommodation recessed part 3. FIG. The relationship with each part of the user's body supported by the spring unit 5 _ij housed in the respective regions A _ij of the unit housing recess 3 is shown, (a) shows the upper central region A ₁₂ and the lower central region A a spring unit _{5 12, 5 22} housed in _22, the relationship between body supine user, (b) is housed in the upper side region _{(a 11)} and a lower side region _{(a 21)} FIG. ₁₆ is a side view showing the relationship between the spring units 5 ₁₁ and 5 ₂₁ which are placed, and the respective parts of the user's body in the lateral recumbent position. (A) is a user who turns over from supine position to the left side supine position on the suppository side support bed 1, (b) a user who turns over from the supine position to the right side reclining position, It is explanatory drawing seen from upper direction, respectively. It is an explanatory view explaining a head and neck central axis HT and a trunk central axis BT when the user who sleeps in the sleeping posture in the supine position on the supine supine corresponding bed 1 from the right side. It is explanatory drawing which looked at the user who sleeps in the sleeping posture of right side recumbency on the supine recumbence corresponding bed 1 from the right side. In each of (a) to (d), one of the spring units 5 is selected from the spring units 5 having different spring constants according to the physical characteristics of the user and accommodated in each area A of the unit accommodation recess 3. It is a top view shown. It is a perspective view which shows the state which attaches the pillow 6 and the raising / lowering apparatus 22 to the bed main body 21 of the supine recumbency corresponding | compatible bed 20 which concerns on other embodiment of this invention. FIG. 6 is an exploded perspective view of a supine supine position corresponding bed 20. It is a perspective view which shows the state which accommodates spring unit 5 ₁₁ ', 5 ₂₁ ' in the unit accommodation recessed part 3 of the back side lying position corresponding | compatible bed 30 based on other embodiment of this invention.

The supine supine position corresponding bed 1 according to the embodiment of the present invention will be described with reference to FIGS. 1 to 11 with each direction shown in FIG. 1 as the vertical and horizontal directions. As shown in FIG. 1, the supine supposing position corresponding bed 1 has a bed case 7 having a rectangular outer periphery, an outer frame portion 2 attached along the inner wall surface of the bed case 7, and a unit inside the outer frame portion 2. The spring constant of the spring unit 5 housed in each area A virtually set in the unit housing recess 3 is provided with the bed main body 4 consisting of a large number of spring units 5 housed in the housing recess 3 as physical features of the user The amount of sinking for each area A of the floor surface formed by the plane of the outer frame portion 2 and each plane of the spring unit 5 accommodated in each area A is adjusted according to the user's supine position and side elevation It adjusts so that the sleeping posture of the place becomes the optimal sleeping posture. In this embodiment, adjustment of the spring constant of the spring unit 5 to be stored in each region A prepares a spring unit 5 of a number of different spring constants for each of the regions A, one close to the spring constant to adjust This is done by selecting the spring unit 5 of.

As shown in FIG. 4, a pillow 6 on which the user of the sleeping posture can put his head is disposed in the outer frame portion 2 above the unit accommodation recess 3 in which the spring unit 5 is accommodated in each area A, respectively. The entire plane of the bed body 4 except 6 is covered with a protective pad 8.

  The natural sleeping posture in which the user places his head on the pillow 6 is limited to the supine position and the left and right lateral decubitus positions, as generally shown in FIG. Here, the sleeping postures of the supine position and the lateral position are mainly controlled by the part of the body projecting in the direction of the lateral surface in the supine position and the lateral position, and the floor surface which is a plane of the bed main body 4 The contact position is determined by the shape of the sagittal plane in the supine position and the shape of the coronal plane in the lateral decubitus position.

  With regard to the shape of the sagittal plane in the supine position, the longitudinal direction of the body is flexible due to the structure of the human skeleton, and in the supine position, it is affected by the elasticity of the bed body 4 and the depression in the bed body 4 is visually determined It is difficult to accurately determine the shape of the back in contact with the bed body 4 because it can not In the position, as shown in FIG. 7A, the back near the dorsal side of the seventh thoracic vertebra (TH7) and the buttocks near the dorsal side of the sacrum, which are estimated from the standing position, project to the bed main body 4 side. It can be estimated that the contact position governs the sleeping posture.

  On the other hand, in the lateral position, the skeleton is not affected by the elasticity of the bed body 4 and the shape of the coronal surface does not change significantly from the standing position, as shown in FIG. 7 (b). It can be determined that the large trochanter protrudes to the side of the bed main body 4 and is a contact position that controls the sleeping posture in the lateral recumbent position.

  With regard to the positions of the back and buttocks in these supine positions, and the positions of the acrosomes and the large trochanter in the lateral position on the bed main body 4, the present inventors set the supine position and the lateral side of the 23 subjects as adults. The body position of the rank was measured. FIG. 6 shows the measurement result displayed on the bed main body 4 and is displayed so that the concentration of the position becomes denser as the parts of the same body of many persons are concentrated. As a result, it was confirmed that the body part of each user of the supine position and the lateral position is not limited to the age and the gender if the user is an adult, and is concentrated on substantially the same region of the bed main body 4.

Therefore, based on the measurement results in FIG. 6, the outline of the unit accommodation recess 3 according to the present embodiment is represented by a rectangular frame in the figure, and the back and hips in supine position of all subjects and in lateral recumbent position Region A _{ij of} 3 rows and 3 columns divided by grid-like straight lines in accordance with the size of the unit accommodation recess 3 so that the shoulder ridge and the large trochanter are located in respective different regions A in the unit accommodation recess 3 (I, j are natural numbers starting from 1) and the foot area A _f are set below it.

As a result, as shown in the figure, the torso of the subject mainly supported by the bed main body 4 in the supine position is located in the second central row (A _i2 ), and the back (TH7) and hip ( The sacrum is concentrated in the area A ₁₂ (upper central area) and the area A ₂₂ (lower central area) of the central row, respectively. In the lateral position, the torso of the subject is located in the right row portion (A _i1 ) of the first row and the left row portion (A _i3 ) of the third row, and the right and left shoulders and the large trochanter are region _a 11 of each of the left and right column _{portions, a 13} to focus on (the upper side region) and the region _{a 21, a 23} (lower side region).

In the present embodiment, the areas A _ij and the foot areas A _f set from the measurement results shown in FIG. 6 are virtually set at the same scale in the unit accommodation recess 3 of the bed main body 4 according to the present embodiment See the broken line in FIG. Since the size of each area A _ij of 3 rows and 3 columns set from the measurement result shown in FIG. 6 is the same and the width of the unit accommodation recess 3 is 870 mm, the width in the horizontal direction of each area A _ij is 290 mm. ing. In addition, the vertical width of each region A _ij is different in that the backs and buttocks of almost all users in the supine position and the shoulder ridge and the large trochanter in the lateral recumbent positions are vertically adjacent in the same row It is 350 mm so as to be located in the area A _ij . Further, since the width in the vertical direction of the unit housing concave portion 3 is 1500 mm, a leg having a width of 290 mm in the horizontal direction and a width of 450 mm in the vertical direction in the remaining gap of the unit housing concave portion 3 below each region A _ij of 3 rows and 3 columns The partial area A _f is virtually set. Foot area A _f is housing the spring unit 5 _f in the region A _f, as will be described later, further 3 splits for a region having a large area may be divided into a plurality of regions.

Thus, if the spring constants of the spring units 5 accommodated in the respective areas A _ij and foot areas A _f virtually set in the unit accommodation concave portion 3 are adjusted, the sinking of the body positions of the user supported by the bed main body 4 The amount of inclusion can be adjusted in units of area A _ij and foot area A _f , and in particular, the back and buttocks that control the sleeping posture in the supine position, and the acrosome and the great trochanter that controls the sleeping posture in the lateral position. The amount of sinking of the bed main body 4 which it contacts can be adjusted separately according to a user's physical feature, as mentioned later.

However, if the back and buttocks in the supine position of the user and the shoulder ridges in the lateral recumbent position on the left and right sides can be located in different areas A, the size and size of each area A to be virtually set The shape is not limited to the above example.

In the spring unit 5 housed in the area A _ij and the foot area A _f , a large number of coil springs extending and contracting in the vertical direction are arranged in parallel in a cubic bag 5a having the same planar shape as the accommodated area A. To be formed. All the spring units 5 are 170 mm of the same height when stored in the bag body 5a in order to make the floor surface on the bed main body 4 continuous as the same surface, and in particular, each area A _ij of 3 rows and 3 columns Since the same shape is used, all the floating units housed in this area A _ij (hereinafter, the reference numerals of the spring units contained in the area A _ij are denoted as 5 _ij ) have the same cubic external form. It can exchangeably accommodate any area A _ij of row 3 columns.

In addition, each region A _ij, for respective regions A _ij, 8 kinds of spring unit 5 _ij having different spring constants are prepared together, of which are selected according to the physical characteristics of a user as described below The spring unit 5 _ij having a spring constant is accommodated in the area A _ij . The spring constant of the spring unit 5 is a load and a displacement of the plane when all the coil springs contained in the bag body 5a are compressed by applying a press-down load which generates a uniform stress in the plane of the spring unit 5 (sinking Amount of wire diameter, number of turns, and coil diameter of each coil spring are adjusted, and eight types of spring units 5 _ij are prepared, where the spring constant is adjusted in eight stages from the minimum value to the maximum value. Ru.

From the spring unit 5 _ij with different spring constants in eight stages, in the areas A ₁₂ and A ₂₂ that support the back and buttocks that control the sleeping posture in the supine position, as shown in FIG. The spring units 5 ₁₂ and 5 ₂₂ of the optimum spring constant are selected and housed, and the areas A ₁₁ , A ₁₃ and A ₂₁ for supporting the left and right shoulders and the large trochanter that govern the sleeping posture of the lateral recumbent position and _{a 23} is accommodated by selecting the spring unit _{5 11,} 5 _13, 5 _{21, 5 23} optimal spring constant is also an optimal sleeping position in lateral position.

  The optimal sleeping posture is not limited to the above-mentioned static sleeping posture in supine position or supine position, but in order to prevent stagnation of lymph fluid or blood circulation due to stagnation in supine position or supine position, supine position and side elevation It is necessary to consider a dynamic sleep posture that achieves smooth turn over among the positions. As a result of analyzing the turning motion of a large number of subjects, the inventor of the present invention has found that the trunk of the body is a central axis of mechanical rotation inside the trunk defined by the body surface, as shown in FIG. The center of the chest B, which is the middle point between the stalk and the seventh cervical spine, and the center of the pelvis C, which is the cross point of the quadrilateral connecting the four points of the superior anterior iliac crest and the superior posterior iliac crest It has been found that smooth turning occurs when the torso central axis BT defined by a straight line is parallel to the heel floor surface (the plane of the bed body 4) in either the supine position or the lateral decubitus position.

  If in the supine or lateral position, the trunk center axis BT is inclined with respect to the floor surface of the trunk, or if it is bent in the shape of a large letter on the floor surface side, the turning fulcrum is lost, and part of the trunk However, since it sinks, it is difficult to turn over smoothly and can not turn smoothly.

  That is, the inventor of the present invention has been told that the central axis BT of the user's trunk is parallel to the floor surface (the plane of the bed body 4) in the supine position and the lateral position shown in FIGS. In which the torso central axis BT is parallel to the heel floor in the transition between the supine position and the lateral position where the torso central axis BT of the user is parallel to the heel floor Because I move only to the left and right, I came to think that it is a dynamic optimum sleeping posture that can minimize turning resistance and turn over unconsciously.

Therefore, in the supine position, according to the physical characteristics of the user, as shown in FIG. 9, the back of the back and the central portion BT of the user are parallel to the plane (bed floor surface) of the bed 4 select spring unit 5 ₁₂ and the spring unit 5 ₂₂ spring constant sinking amount of the buttocks is adjusted, respectively accommodated in the area a ₁₂ and the area a _22.

  In the supine position, the user's trunk center axis BT is parallel to the flat surface (restoration surface) because the back side of the user hides in the bed body and the chest center B and the pelvis center C can not be visually checked directly. The chest center B and the pelvis center C in the state of <-> are determined, and the side of the body in the direction orthogonal to the sagittal plane (the direction orthogonal to the sheet of FIG. Mark the marker B 'and the marker C' on the body surface, and regard the straight line connecting the marker B 'and the marker C' of the supine user as the trunk center axis BT so that it is parallel to the plane of the bed main body 4 adjust.

  In the prone position, the seventh cervical vertebra horizontal line (C7HL) parallel to the floor surface from the seventh cervical vertebra is used as a reference line, and in the supine position, the trunk central axis BT decreases its angle with the seventh cervical vertebra horizontal line. 7 Even if it is considered to approximate the cervical spine horizontal line, the chest center B can be estimated from the seventh cervical vertebra obtained from palpation, and the straight line connecting the pelvic centers C estimated from the buttocks of the body will be adjusted to be parallel to the plane of the bed body 4 Good.

Adjustment to make the body central axis BT parallel to the flat surface (the heel floor surface) is, for example, for a user with a physique whose hips protrude from the back in the supine position, depending on the shape, weight, and flexibility of the back and hip muscles for even different, generally spring unit 5 ₁₂ spring unit 5 ₂₂ spring rate is lower spring unit 5 _{12 than,} 5 ₂₂ and select, the user of the physique back from the buttocks in a supine position on the contrary projects, spring constant of the spring unit _{5 22} than the spring unit _{5 12} selects the high spring unit _{5 12, 5 22.}

At this time, if the spring constant of the selected pair of spring units 5 ₁₂ 5 _{22 2} is high (hard), the spring pressure received by the body from the spring units 5 _{12 2} 5 ₂₂ (hereinafter referred to as body pressure) is one of the back and buttocks. Focus on parts and cause discomfort. On the other hand, if the spring constant of the selected pair of spring units 5 ₁₂ and 5 ₂₂ is low (soft), the amount of sinking in the back and buttocks will be large, resulting in rolling resistance Becomes larger. Therefore, in the parallel straight torso central axis BT of the user plane of the bed body 4 is spring constant is sufficient to select the spring unit 5 ₁₂ and the spring unit 5 ₂₂ fixed ratio, It is desirable to adjust the spring constant of the pair of spring units 5 ₁₂ and 5 ₂₂ so that no gap with the spring unit 5 is formed in the fourth lumbar spine between the back and buttocks.

Further, even in the lateral recumbent position on the left and right sides, the left and right sides of the trunk central axis BT of the user are in a straight line parallel to the plane of the bed main body 4 as shown in FIG. The spring units 5 ₁₁ and 5 ₁₃ and the spring units 5 ₂₁ and 5 ₂₃ of the spring constant are selected to adjust the amount of depression of the acromion and the large trochanter, and the regions A ₁₁ and A ₁₃ and the regions A ₂₁ , respectively. We accommodate in A ₂₃ .

  As described above, due to the structure of the human skeleton, the longitudinal direction along the sagittal plane of the body is flexible, but the direction along the coronal plane is relatively hard, and in the lateral recumbence position, the elastic effect from the bed body 4 is Markers B ′ ′ marked on the body surface of the body in the direction orthogonal to the coronal plane from the chest center B and the pelvis center C, which are determined in the standing position, as they are not received very much. The height of the marker C ′ ′ in the supine position almost accurately represents the heights of the chest center B and the pelvis center C. Therefore, in adjustment in which the central axis BT of the user's torso in the lateral recumbent position is made parallel to the plane (the floor surface), a straight line connecting the marker B '' and the marker C '' of the user in the lateral recumbent position is the central axis of the torso It is regarded as BT and is adjusted to be parallel to the plane of the bed body 4.

For example, for the user of the physique right square trochanter than the right shoulder peak projecting at right lateral position, acromion and greater trochanter of the shape and weight may vary depending on the flexibility, generally spring unit 5 ₁₁ select more spring unit 5 ₁₁ a pair of spring constant is low spring units 5 _21, 5 _21, for the user of the physique right shoulder peak from the right large trochanter right lateral position on the contrary projects, spring unit 5 ₁₁ than the spring constant of the spring unit _{5 21} selects a higher set of spring unit _{5 11, 5 21.}

In the third area A 3 _j and the foot area A _f which do not relatively affect the sleeping posture of the supine position and the lateral position, the spring units 5 3 _j and 5 _f having a constant spring constant are accommodated. The spring constant of spring units ₅ 3j, _{5 f} can be set arbitrarily, the adjacent spring units to be accommodated in the second row of the area _{A 2j 5 2j} spring constant and the adjacent spring unit ₅ 3j, between _{5 f} Since the body pressure of the mutual spring constants changes rapidly at the boundary, it is preferable that the spring constants adjusted to eight stages of the adjacent spring units 5 _{ij be} relatively close values.

On the other hand, the spring constants of the spring units 5 ₃₁ and 5 ₃₃ accommodated in the regions A ₃₁ and A ₃₃ of the third row left and right row not supporting the foot when waking up have little effect on the sleeping posture, so adjustment thereof There is no restriction on the size of each of the areas A ₁₂ , A ₂₂ , and A ₁₁ using the fact that the spring units 5 _ij can be exchangeably accommodated in any of the areas A _ij of 3 rows and 3 columns. , A ₁₃ , A ₂₁ and A ₂₃ , the spring unit 5 _ij having a spring constant different from the spring constant of the spring units 5 ₁₂ 5 ₂₂ 5 ₁₁ 5 ₁₃ 5 ₂₁ 5 ₂₃ housed in the third row as a spare It can also be accommodated in the areas A ₃₁ and A _{33 of the} left and right row parts.

Similarly, since the lower part of the left and right row part of the foot area A _f is also an area which does not support the foot when the user wakes up, a spring unit which virtually sets an area of the same size as the area A _ij to be a spare It can also accommodate 5 _ij . Thus, if an area for accommodating the spare is secured, the spring unit 5 _ij for the spring unit for changing the spring constant of the pulling unit 5 ₁₂ 5 ₂₂ 5 ₁₁ 5 ₁₃ 5 ₂₁ 5 ₂₃ It can be housed inside.

The outer frame portion 2 around the unit housing recess 3 is also formed of an elastic body like the spring unit 5, but does not differ greatly from the spring constants of the spring units 5 _ij and 5 _f arranged adjacent to the outer frame portion 2 It is preferable to use an elastic body having a spring constant having a certain degree of hardness.

  The height of the pillow 6 disposed in the outer frame portion 2 of the bed main body 4 is, as shown in FIG. 9, a straight line parallel to the bed main body 4 in the supine position with respect to the trunk central axis BT of the user. Adjust the head and neck central axis HT to a continuous height by tilting 15 degrees ± 5 degrees. The head and neck central axis HT is a dynamic central axis of rotation within the head and neck defined by the body surface extending from the head to the trunk as shown in FIG. A straight line connecting the center A of the head, which is the intersection of the diagonals of the quadrilateral connecting the points, and the center B of the chest, the inclination of the head and neck central axis HT with respect to the trunk central axis BT in the supine position with the head on the pillow 6 The angle approximates a supine cervical spine tilt angle. That is, the center of rotation of the head and neck when turning over is considered to be the real human cervical spine itself.

  By setting the inclination of the head and neck central axis HT to 15 degrees ± 5 degrees with respect to the trunk central axis BT in the supine position, the alignment of the entire cervical spine is maintained, and there is no compression of the spinal nerve and the cervical nerve On the other hand, if the inclination angle of the head and neck center axis HT with respect to the trunk center axis BT exceeds 20 degrees, the airway is compressed and it becomes difficult to breathe, and if it becomes less than 10 degrees, the cervical spine curves and the cervical nerves in between There is a possibility of pressure.

  It is desirable that the pillow 6 has a uniform thickness that achieves the height described above, and a hardness that does not cause the head to sink, for example, a moderate hardness that does not include soft intermediate materials such as feathers, beads, and polyester. If it is too hard, the pressure will concentrate at one point on the head, causing pain, and if it is too soft, the head will sink into the pillow 6, alignment of the cervical spine will be poor and nerve compression will occur, and the head will rotate on the pillow 6. Turn resistance when turning over becomes greater.

  Also, as shown in FIG. 8, the pillow 6 has a width of at least 500 mm or more and the head rolls during turning so as to support the head in either the supine position or the lateral decubitus position. It is desirable that the plane be flat for ease.

  When the plane of the pillow 6 is substantially flat and the user's head is supported at the same height in the supine position and the lateral position, as shown in FIG. 9, the sleeping position in the supine position is 15 degrees with respect to the trunk central axis BT. When the head and neck central axis HT inclined at ± 5 degrees is turned to shift to the left and right lateral recumbent sleep postures, the angle between the head and neck central axis HT and the trunk central axis BT gradually becomes smaller, as shown in FIG. In the position, it becomes substantially horizontal to the heel floor surface, and continues linearly above the trunk central axis BT.

  As a result, even in the left and right lateral sleeping postures, the cervical spine alignment is well maintained anatomically, compression of the spinal nerve and cervical nerve is reduced, muscle tension is relaxed, blood circulation is maintained, and head and neck Since the central part axis HT and the central part BT of the trunk are continuous in a straight line parallel to the floor surface of the bed, the head and trunk can easily roll side by side synchronously on the bed main body 4 and the pillow 6, It is possible to turn over smoothly from a position to a supine position.

The protective pad 8 covering the surface of the bed body 4 has a width in the lateral direction of 500 mm or more here, and the portion of the pillow 6 is cut away as shown in FIG. 1 so that the height of the adjusted pillow 6 is not changed. It is formed in a rectangular shape. The protective pad 8 is a thin-walled bed pad made of wool, urethane or the like and covers the surface of the bed main body 4 including the flat surface of the spring unit 5 _ij housed in the unit housing recess 3 though having no elasticity itself. Thus, even if the spring constants of the adjacent spring units 5 _ij differ to some extent, the sudden change in body pressure at the boundary is mitigated. Therefore, since the body pressure received from the bed body 4 is dispersed by the protective pad 4 and gradually changes as a whole, partial nerve compression or partial deformation of the body does not occur.

FIG. 11 shows an example of adjusting the spring constant of the spring unit 5 and the height of the pillow 6 for each area A according to the physical characteristics of the user, for the supine supine position corresponding bed 1 of the above-mentioned configuration. The numerical values shown in each area A in the figure are accommodated in the area A with the minimum value (the softest) of the spring constant of the spring unit 5 _ij adjusted to eight stages being 1 and the maximum value (the hardest) being 8. A rank obtained by dividing the spring constant of the spring unit 5 into eight stages is shown, and the numerical value on the right side of the pillow 6 indicates the height of the pillow 6 from the bed body 4.

For example, the user shown in the diagram (a), since the back and the acromion is projected from the buttocks and the greater trochanter, the more second row of region 5 _2j spring constant of the first row of region 5 _1j The amount of sinking in the region _{51 j} of the first row is made low, and the body central axis BT in the supine position and the lateral repose position is formed into a horizontal straight line. Further, the user shown in (b), as well as to vary the spring constant of the region 5 ₂₁ and the region 5 ₂₃ according to the amount of projection of the greater trochanter is asymmetric, use shown in the diagram (a) Since the weight is heavier than that of the person, the spring constant of the spring unit 5 in all the regions A is made relatively high to prevent the bed main body 4 from being largely sunk. Also, as compared with the figures (a) and (b) where the user is male, in the figures (c) and (d) which are female, the height of the pillow 6 is relatively small and lightweight. Is relatively low at 60 mm, and furthermore, by adjusting the spring constant of the spring unit 5 relatively low in all the regions A, even if it is lightweight, the fourth lumbar spine in the middle between the back and buttocks The unit 5 abuts lightly.

Back side lying position corresponding bed 1 (bedding A) in which the bed body 4 and the pillow 6 are adjusted according to the physical characteristics of the user as described above, and the conventional bed with the uniform spring constant of the bed surface of the bed body (bedding In order to compare the sleeping postures in B), 17 subjects of adults were allowed to sleep overnight in bedding A and bedding B, respectively, and the sleeping postures were analyzed by video recording. The analysis is shown in FIG. 5 where the torso of the subject in the bed body 4 is located in the central row (A _i2 ) and the head is in the center of the pillow 6 and the torso of the subject is in the right row ( Positioned in A _i1 ) and the left row part (A _i3 ), assuming the sideways position when the head is on the left and right of the pillow 6 is the expected sleeping posture, and the sleeping posture to be observed by captured video is expected for all sleeping time The ratio of the matching time to the sleeping posture was taken as the matching rate, and the matching rate of the head and torso was obtained from the bedding A and the bedding B.

  Table 1 shows the same agreement between the head and torso of 11 subjects except for 4 subjects who did not show any correlation between the bedding A and the bedding B when large body movements due to lying down or breathing disorder were observed. The rates are shown for Bedding A and Bedding B.

  According to Table 1, the P value comparing the matching rate of bedding A and bedding B is 0.021 for the head and 0.0004 for the torso. The superiority of the bedding A according to this embodiment over the conventional bedding B was low.

  In the embodiment described above, the height of the pillow 6 is adjusted so that the head and neck central axis HT inclines at 15 degrees ± 5 degrees with respect to the trunk central axis BT in the sleeping posture in the supine position, The height adjustment needs to be performed with an accuracy of 1 mm, and it is necessary to prepare pillows 6 with different heights each time.

  FIGS. 12 and 13 show a supine supine position corresponding bed 20 according to a second embodiment of the present invention in which this problem is solved by using a lifting device 22 for adjusting the height of the pillow 6. Since the shape of the outer frame portion 23 of the bed main body 21 is different from that of the supine supine position corresponding bed 20 as compared with the suppository reposition position corresponding bed 1 and only the lifting device 22 is separately provided, The configuration of each part that acts the same as or similar to the position corresponding bed 1 is assigned the same reference numeral, and the description thereof is omitted.

  As shown in FIG. 12, the lifting and lowering device 22 for lifting and lowering the pillow 6 is disposed in an opening 23a in which a part of the upper frame of the outer frame portion 23 is cut out. As a lifting device that variably adjusts the height of the pillow 6, the pneumatic system that variably controls the height of the pillow 6 by the outflow of air into the expanding and contracting air bag and the rotation of the rotary shaft of the motor are converted into lifting and lowering operations by a screw gear There is a mechanical type, however, since the above-mentioned elevation control of 1 mm can not be performed by the pneumatic type, the mechanical type elevation unit 22 is used in the present embodiment.

  However, since the mechanical lifting device 22 has a height of at least 10 cm and can not adjust the height of the pillow 6 to 10 cm or less when disposed on the bed main body 21, the opening of the outer frame portion 23 Place in 23a.

  According to back side supposing position corresponding bed 20 according to the present embodiment, even if an unspecified user such as an accommodation facility uses the same bed, the pillow 6 should be replaced according to the physical characteristics of the user Instead, the height of the pillow 6 can be adjusted so that the head and neck central axis HT inclines at 15 degrees ± 5 degrees with respect to the trunk central axis BT in the sleeping posture in the supine position.

Further, in each of the above-described embodiments, the central row portion (A _i2 ), the right row portion (A _i1 ), and the left row portion (A _i3 ) have the same width, and therefore each region A _ij of 3 rows and 3 columns The spring unit 5 _ij housed in can be shared in each area A _ij with the same outer shape, but the child or the user with a narrow shoulder width is the central row portion (A _i2 ) where the user of the supine position is located If the central row portion (A _i2 ), the right row portion (A _i1 ), and the left row portion (A _i3 ) to be virtually set are equal in width, the shoulder ridge is in the lateral position and the right row portion (A _i1 ) There are cases where the left row (A _i3 ) is not reached.

Therefore, the size of each region A virtually set in the unit accommodation recess 3 may be changed in accordance with the physical feature of the user. FIG. 14 shows a supine supine position corresponding bed 30 according to the third embodiment of the present invention in which the left and right width of the central row portion (A _i2 ) is narrowed according to the user having a narrow shoulder width, as shown in the same figure. As a result of narrowing the lateral width of each region (A _i2 ) of the central row portion, the lateral width of the spring unit 5 ₁₂ ′ and the spring unit 5 ₂₂ ′ for supporting the back and buttocks of the supine position respectively is narrow. The left and right widths of the spring units 5 ₁₁ ′, 5 ₁₃ ′, 5 ₂₁ ′ and 5 ₂₃ ′ that respectively support the shoulder ridge and the large trochanter are wide. As a result, even if the user has a narrow shoulder width, the shoulder ridge is reliably supported by the spring units 5 ₁₁ ′ and 5 ₁₃ ′ in the lateral recumbent position, and by adjusting these spring constants, the trunk in the lateral recumbent position The central axis BT can be formed in a straight line parallel to the bed surface.

Similarly, for a user who is tall and has a long distance between the back and buttocks, the width in the vertical direction of each area (A2 _J ) on the second line is made long, and the buttocks and the large trochanter accidentally enter the third line. It is possible not to be located in each eye area (A 3 _J ).

  Further, in each of the embodiments described above, the spring unit 5 is configured by arranging a large number of coil springs in parallel in the cubic bag 5a, and the spring constant of the spring unit 5 is accommodated in the bag 5a. It is determined from the load when all the coil springs are compressed and the displacement of the flat surface (sinking amount), but the relationship between the pressing load applied to the flat surface of the spring unit 5 and the displacement (sinking amount) is clear If it is an elastic body that can be restored when the pressing load is released, it is replaced with a coil spring, and a net-like elastic body obtained by joining thick threads made of synthetic fibers such as polyethylene resin in random three-dimensional mesh Low-resilience foam made of open-cell foam, polyurethane, latex, synthetic rubber, etc. In addition, as long as the flat surface of these elastic bodies can form a part of the flat surface of the bed as it is, the spring unit 5 may be used as it is without being housed in the bag 5a. Good.

  This type of elastic body is distorted when stress is applied and returns to the original size except when it is so-called spring material such as a coil spring, so that the applied load and the displacement (sinking amount) are necessarily proportional to each other. There is no proportionality constant such as the spring constant used for coil springs. For example, in the case of a reticulated elastic body which is a fiber assembly, the load and the displacement do not necessarily change linearly due to the influence of the elasticity of the synthetic fiber itself and the friction between the fibers, but at least a certain correlation exists between the load and the displacement. Even with the same weight, different displacements can be obtained qualitatively by changing the structure or material. Here, the ratio of displacement (sinking amount) to a constant load is referred to as elasticity, and when there is a so-called soft elasticity where the displacement (sinking amount) is relatively large with respect to a constant load, the elasticity is low, It is said that elasticity is high when there is a so-called hard elasticity with a small displacement (sinking amount).

The amount of depression of each body position of the user supported by the bed main body 4 by adjusting the elasticity of the spring unit 5 accommodated in each area A _ij and the foot area A _f virtually set in the unit accommodation recess 3 Can be adjusted in units of area A _ij and foot area A _f , and the bed body with the back and buttocks that control the sleeping posture in the supine position and the acrosome that controls the sleeping posture in the lateral position and the large trochanter The amount of sinking of 4 can be individually adjusted to the physical characteristics of the user.

For example, as in the case of preparing the coil springs 5 having different spring constants, eight types of spring units 5 _ij having different elasticity in eight stages are prepared, and the sleeping posture of supine from any of the spring units 5 _ij In the areas A ₁₂ and A ₂₂ supporting the back and buttocks, as shown in FIG. 3, select the spring units 5 ₁₂ and 5 ₂₂ of optimum elasticity for optimum sleeping posture in the supine position, as shown in FIG. In the area A ₁₁ , A ₁₃ , A ₂₁ , A ₂₃ that accommodates the left and right shoulders and the large trochanter that governs the sleeping position in the lateral position, as well as the accommodation, the optimal sleeping position is also optimal in the lateral position. Select and accommodate the resilient spring units 5 ₁₁ 5 ₁₃ 5 ₂₁ 5 ₂₃ .

  Moreover, in the above-mentioned embodiment, although the whole plane of bed main parts 4 and 21 except pillow 6 is covered with protection pad 8, a case where height of pillow 6 is not adjusted or thickness of protection pad 8 is considered When adjusting the height of the pillow 6, the entire flat surface of the bed body 4, 21 may be covered with the protective pad 8.

  Further, if extreme changes in spring pressure do not appear on the flat surfaces of the bed bodies 4 and 21, sheets or the like may be substituted for the protective pad 8, and the protective pad 8 having a certain thickness may not necessarily be disposed.

The adjustment of the spring constant in the case of using a coil spring for each spring unit 5 _ij is performed in advance by selecting a spring unit 5 _ij having a specific spring constant from a plurality of spring units 5 _{ij having} different spring constants. The spring constant may be adjusted individually by replacing the built-in coil spring or laminating another elastic body on the surface, etc. Each spring unit 5 _ij uses a coil spring and the above elastic body. What mixed with things may be used.

  In addition, in the supine position and the lateral position, the adjustment of setting the trunk central axis BT of the user to a straight line parallel to the plane (bed surface) of the bed body 4 is performed from the seventh cervical vertebra above the thorax to the pelvic center through the lumbar spine. The straight line does not have to be precisely adjusted to be parallel to the plane of the bed body 4 (bed floor), and the center of the torso defined by the body surface from the chest to the buttocks determined from the outline is the plane plane of the bed body 4 It is sufficient to adjust so as to be in a straight line parallel to (bed surface).

  The present invention is suitable for a supine supine bed that repeatedly turns over on the bed.

1, 20, 30 back side lying position corresponding bed 3 unit accommodation concave 4, 21 bed main body 5 spring unit 6 pillow 8 protective pad 22 lifting device A area A _i2 central row portion A ₁₂ upper central area A ₂₂ lower central area A _i1 right Row portion A ₁₁ , A ₁₃ upper side region A ₂₁ , A ₂₃ lower side region BT body central axis HT head and neck central axis

Claims (12)

A unit containing recess is formed in the bed main body for supporting the sleeping user to accommodate a large number of spring units in an exchangeable manner, and each region virtually set in the unit containing recess is adjusted according to the physical feature of the user A bed that accommodates a spring unit of a spring constant and adjusts the amount of vertical sinking of each part of the bed body,
It includes at least the central region of the central row where the supine user is located, and the left side region of the left row and the right side region of the right row where the lateral users are located on the left and right sides of the central row. It has a bed body in which a unit accommodating recess of a size is formed,
In the upper central area where the back of the supine user of the central area is located and the lower central area where the buttocks are located, the torso central axis of the supine user is on the floor surface of the bed main body Exchangeably accommodates one or more spring units whose spring constants have been adjusted to be parallel .
In the upper side area where the shoulder of the user of the lateral recumbent position of the left side area and the right side area is located and the lower side area where the large trochanter is located, the central axis of the user's trunk of the lateral recumbence position is A supine supposing position corresponding bed, wherein the one or more spring units whose spring constants are adjusted are exchangeably accommodated so as to be parallel to the floor surface of the rat . Located above the central row, the height at which the inclination angle between the head and neck central axis and the trunk central axis of the supine user is approximately 15 degrees, and at least the width between the left and right rows Equipped with a pillow
The supine supine position corresponding bed according to claim 1 , wherein the surface of the pillow on which the user's head can be placed is substantially flat from the supine position to the left and right lateral decubitus positions. The left and right rows of spring units have their spring constants adjusted so that the head and neck central axis and the torso central axis of the user in the lateral recumbent position with the head placed on a pillow are continuous along a straight line parallel to the heel floor surface. The bed according to claim 2 , wherein the bed is accommodated in the upper side area and the lower side area of the part. A unit receiving recess is formed inside the outer frame along the periphery of the bed body,
The bed on the supine supine position corresponding to any one of claims 1 to 3 , wherein a lifting device for lifting and lowering the pillow is disposed in the opening above the outer frame portion. A spring unit having a spring constant approximating a spring constant to be adjusted is selected from at least two or more spring units having different spring constants for each of the areas of the unit accommodation recess, and is accommodated in the area. The supine supine position corresponding bed according to any one of claims 1 to 4 . The bed body supporting the sleeping user is formed with a unit accommodating recess for respectively accommodating a large number of spring units in a replaceable manner, and elasticity adapted to the physical feature of the user in each area virtually set in the unit accommodating recess A bed for accommodating the spring unit of the above and adjusting the amount of vertical sinking of each part of the bed body,
It includes at least the central region of the central row where the supine user is located, and the left side region of the left row and the right side region of the right row where the lateral users are located on the left and right sides of the central row. It has a bed body in which a unit accommodating recess of a size is formed,
In the upper central area where the back of the supine user of the central area is located and the lower central area where the buttocks are located, the torso central axis of the supine user is on the floor surface of the bed main body Replaceably accommodate one or more spring units whose elasticity has been adjusted to be parallel .
In the upper side area where the shoulder of the user of the lateral recumbent position of the left side area and the right side area is located and the lower side area where the large trochanter is located, the central axis of the user's trunk of the lateral recumbence position is A supine supposing position corresponding bed, wherein the one or more spring units whose elasticity is adjusted are exchangeably accommodated so as to be parallel to the heel floor surface . Located above the central row, the height at which the inclination angle between the head and neck central axis and the trunk central axis of the supine user is approximately 15 degrees, and at least the width between the left and right rows Equipped with a pillow
The supine supine position corresponding bed according to claim 6 , characterized in that the surface of the pillow on which the user's head can be placed is approximately flat from the supine position to the left and right lateral decubitus positions. The left and right rows of spring units have their elasticity adjusted so that the head and neck central axis and torso central axis of the user in the lateral recumbent position with the head placed on a pillow can be continued along a straight line parallel to the heel floor surface. The bed according to claim 7 , characterized in that it is accommodated in the upper side area and the lower side area of the part. A unit receiving recess is formed inside the outer frame along the periphery of the bed body,
9. A bed according to any one of claims 6 to 8 , characterized in that a lifting device for lifting and lowering the pillow is disposed in the opening above the outer frame portion. Wherein for each of the regions of the unit housing recess, the claims from at least two spring units elasticity is different, select the elasticity of the spring units that approximate the elasticity of adjusting, characterized in that accommodated in the area The supine supine position corresponding bed according to any one of claims 6 to 9 . A spring unit matching the lateral width of each area is selected from at least two or more spring units having different lateral width for each area of the unit accommodation recess, and is accommodated in the area. The supine supine position corresponding bed according to any one of claims 1 to 10 . The supine supine position corresponding bed according to any one of claims 1 to 11 , wherein the entire surface of the bed body is covered with a protective pad that disperses the body pressure received by the user from the bed body.

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