JP2017187412A - Pillow production method and pillow production device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a pillow production method and a pillow production device for producing a pillow which gives an optimal sleeping comfort to a subject.SOLUTION: In a step 1101, a median sagittal plane (lateral center plane) of a subject on a pillow is calculated. In a step 1102, a ridge line curve of a neck and an occiput of the subject from the median sagittal plane of the subject is extracted, and a depth on a recess part which becomes dent by largest distance, on the neck to the occiput on the ridge line curve is set to a neck recess depth d. In a step 1103, a target pillow neck height H', and a target pillow occiput height H' are set to satisfy H'(mm)←-0.25d+73H'(mm)←0.15d+43. In a step 1104, a filling material F is filled in the pillow so that the pillow neck height Hand pillow occiput height Hbecome the target pillow neck height H' and target pillow occiput height H', and loads on the pillow neck part and pillow occiput become a prescribed value.SELECTED DRAWING: Figure 10

Description

  The present invention relates to a pillow manufacturing method and a pillow manufacturing apparatus for manufacturing a pillow optimal for a subject.

  For example, a pillow is an indispensable bedding for a comfortable sleep, and a medical person advocates that a posture of sleeping in a supine position using a pillow is close to a standing posture of a natural body.

  The conventional pillow manufacturing method measures the one-dimensional shape or two-dimensional shape of the neck and occipital region of the subject in a standing posture, and fills the gap between the mattress (bedclothes) and the neck and occipital region of the subject. Determine the shape. Therefore, there is no gap between the pillow and the subject's neck. The measurement of the above-mentioned standing posture is realized by measuring the dimensions of the neck and the occipital region with respect to the extension line of the back in a state where the face is inclined by about 5 ° with respect to the extension line of the subject's back (see: Patent Document). 1, 2).

Japanese Utility Model Publication No. 6-87802 JP 2006-334299 A

  However, according to the conventional pillow manufacturing method described above, since the shape of the pillow is determined so that the pillow is in contact with the neck of the subject, there is actually a problem that the optimal sleeping comfort of the subject cannot be obtained. is there. In addition, based on the one-dimensional shape or two-dimensional shape of the neck and occipital region of the subject in the standing posture, the subject selects an optimal pillow from a plurality of pillows that have been adjusted to change the stiffness of the pillow. As a result, the manufacture of the pillow is complicated, and as a result, the manufacturing cost of the pillow is high.

  In order to solve the above-described problem, the pillow manufacturing method according to the present invention includes a neck dent depth calculating step for calculating a neck dent depth with respect to the occipital region of the subject in a standing posture, and a neck dent depth. The target pillow neck height calculating step for calculating the target pillow neck height corresponding to the subject's neck and the target pillow back head height corresponding to the subject's back head according to the neck recess depth is calculated. Target pillow occipital height calculation step, pillow neck position corresponding to the neck and occipital area of the subject, and the pillow neck height and pillow occipital height at the occipital position are the target pillow neck height and the target pillow occipital height And a filling material filling step of filling the pillow with a filling material until the load at the neck position and the back of the head of the pillow reaches a predetermined neck load and a predetermined back of head load. A gap with a height corresponding to the depth of the dent in the neck is provided between

  In addition, the pillow manufacturing apparatus according to the present invention includes a plurality of rods having a tip that is pressed against the neck and occipital region of a subject in a standing posture and a rear end that is provided with a marker, and each rod in two dimensions in parallel. A rod holding mechanism that holds and arranges, a camera that captures a marker of each rod, a filler filling unit that fills a pillow with a filler, and a neck from the position of each marker captured by the camera to the back of the subject's head And a control unit for calculating the depth of the dent and controlling the filler filling unit based on the dent depth of the neck.

  According to the present invention, since the gap is provided between the neck of the subject and the pillow neck according to the depth of the neck recess with respect to the back of the subject, the optimal sleeping comfort of the subject can be obtained. Moreover, since the shape of the pillow is determined only by the depth of the neck recess with respect to the back of the subject regardless of the type of filler (the size of rigidity), the manufacture of the pillow is simplified. Can be lowered. Furthermore, since the filling material is filled until the predetermined neck load and the predetermined occipital load desired by the subject are reached, a pillow can be manufactured using the preferred filling material (rigidity) of the subject.

It is a figure explaining the cervical dent depth with respect to the back of the head in the median sagittal plane (right-and-left center plane) of the test subject's standing posture concerning the present invention. It is a figure which shows the relationship between a test subject's supine position and a pillow for demonstrating the principle of this invention. It is a graph showing the relationship between the neck height H _n of the subject of the neck recess depth d and optimal pillow FIG. Subjects neck recess depth d and optimal pillow occipital in FIG. 2 is a graph showing the relationship between the height H _h. Is a graph showing the relationship between the difference ΔH = _{H n} -H _h of the subject's neck recess depth d and optimal pillow FIG. It is a photograph which shows embodiment of the pillow manufacturing apparatus which concerns on this invention. It is a photograph which shows the actual machine state of the pillow manufacturing apparatus of FIG. It is a photograph for demonstrating the test subject's standing posture by the pillow manufacturing apparatus of FIG. It is a perspective view which shows the detail of the filler filling unit of FIG. It is a flowchart for demonstrating operation | movement of the control unit of FIG. It is a figure which shows the S-shaped curve of the middle sagittal surface in step 1102 of FIG. FIG. 11 is a detailed flowchart of a mid-sagittal plane calculation step in FIG. 10. 13 is a photograph showing an example of a camera image acquired in step 1301 of FIG. It is the binary data of the color marker extracted in step 1302 of FIG.

  FIG. 1 is a view for explaining a cervical recess depth d with respect to the occipital region in a mid-sagittal plane (right and left central plane) of a standing posture of a subject according to the present invention.

  In FIG. 1, 11 is the neck of the subject 1, 12 is the occipital region of the subject 1, and the neck recess depth d is the ridge line curve S of the neck 11 and the occipital region 12 of the subject 1. It is defined by the depth of the most concave part.

  FIG. 2 is a diagram illustrating a state in which a subject is sleeping in a supine position for explaining the principle of the present invention.

In FIG. 2, the subject 1 is sleeping in the supine position on the pillow 3 on the mattress 2. At this time, the pillow shape P of the pillow 3 filled with the filler F has a gap between the pillow 3 and the neck 11 of the subject 1 having a difference D corresponding to the neck recess depth d, and the subject. It is determined so as to come into contact with one occipital region 12. Therefore, in order to produce an optimal pillow shape P, the neck height H _n and the occipital height H _h are adjusted with the respective loads on the neck 11 and the occipital region 12 of the subject 1 being 0.85 kgf and 2.12 kgf. The 21 types of pillows 3 to 7 were selected by 7 subjects to select the most comfortable pillow. This selection method was performed by a bisection method. In other words, the current pillow and another shape pillow were compared one after another and searched, and the subject selected the most suitable pillow. These selection results will be described with reference to FIGS.

Figure 3 is a graph showing the relationship between the neck height H _n of the neck recess depth d and optimal pillows 3 subjects 1 of FIG. As shown in FIG. 3, the neck height H _n of the pillow 3, the regression line:
H _n (mm) = − 0.25d + 73 (1)
Contribution R ² = 0.26
In this case, the contribution R ² of the neck recess depth d was large.

FIG. 4 is a graph showing the relationship between the neck recess depth d of the subject 1 in FIG. 2 and the optimum occipital head height H _h of the pillow. As shown in FIG. 4, the back head height H _h of the pillow 3 is a regression line:
H _h (mm) = 0.15d + 43 (2)
Contribution R ² = 0.04
In this case, the contribution R ² of the neck recess depth d was small.

FIG. 5 is a graph showing the relationship between the neck recess depth d of the subject 1 in FIG. 2 and the optimum difference ΔH = H _h −H _n between the pillows 3. As shown in FIG. 5, the difference ΔH of the pillow 3 is a regression line:
ΔH (mm) = − 0.40d + 31 (3)
Contribution R ² = 0.32
In this case, the contribution R ² of the neck recess depth d was large.

As described above, the contribution R ² of the cervical dent depth d to the cervical height H _n and the difference ΔH is a significant value, and therefore, the cervical dent depth d, the cervical height H _n and the difference D ( = D−ΔH). On the other hand, the contribution R ² to the occipital height H _h of the cervical recess depth d is small, but the difference ΔH (= H _h −H) between the optimal occipital height H _h of the pillow 3 and the cervical height H _{n. As} shown in FIG. 5, since _n ) has a correlation with the dent depth d, the equation (2) is still considered effective. Therefore, it is considered that there is a cervical height H _n and a occipital height H _{h at} which the optimal sleeping comfort is obtained with respect to the dent depth d. At this time, a difference D = d−ΔH corresponding to the neck recess depth d is designed between the neck 11 of the subject 1 and the pillow. However, in the actual sleeping posture of the subject, the load on the back of the head 12 is applied to the back of the pillow, so that the back of the head 12 is deformed and the back of the head 12 sinks. As a result, the subject's neck 11 fits the neck of the pillow.

  FIG. 6 is a photograph showing an embodiment of the pillow manufacturing apparatus according to the present invention (see: Japanese Patent Application No. 2014-215071 specification and drawings). However, in order to facilitate the explanation of the operation, the pillow manufacturing apparatus of FIG. 6 is made smaller than the actual pillow manufacturing apparatus shown in FIG. In FIG. 7, a rod group 101 composed of vertical × horizontal = 40 × 5 rods R is provided, and a color marker M is attached to the rear end of the rod R. The rod holding mechanism 102 is connected to an electric pump 106 for bringing the rod holding mechanism 102 into a rod sliding state and a rod fixing state (braking state). Further, two cameras 104 for photographing the color marker M are provided. In this case, the upper camera 104 photographs the upper half color marker M, and the lower camera 104 photographs the lower half color marker M.

In Figure 6, the rod group 101 rod _R 11 a 5 × 5 present consisting rigid material such as stainless _{steel, R 12, ..., R 15} ; R 21, R 22, ..., R 25; ...; R 51, R ₅₂ ,..., R ₅₅ , and these rods are held by the rod holding mechanism 102 at equal intervals in a two-dimensional manner. Rod _{R 11, R 12, ...,} R 15; R 21, R 22, ..., R 25; ...; R 51, R 52, ..., the right side of FIG. 6 of _{R 55} tip pillow shown in FIG. 8 pressed against the subject's neck and occipital, while the rod _{R 11, R 12, ...,} R 15; R 21, R 22, ..., R 25; ...; R 51, R 52, ..., after the _{R 55} specific color for example red color marker _M 11 to the _{end, M 12, ..., M 15} ; M 21, M 22, ..., M 25; ...; M 51, M 52, ..., M 55 are assigned. It should be noted that two or more specific colors, for example, red and blue may be alternately attached to the marker.

The rod holding mechanism 102 is supported by the frame mechanism 103. Rod _{R 11,} R ₁₂ of the frame mechanism _{103, ..., R 15; R} 21, R 22, ..., R 25; ...; R 51, R 52, ..., the color of _{R 55} markers _{M 11, M 12, ..., M 15; M 21, M 22} , ..., M 25; ...; M 51, M 52, ..., the color marker _{M 11,} M ₁₂ at a position opposed to _{M 55, ..., M 15;} M 21, M 22, .., M ₂₅ ;...; M ₅₁ , M ₅₂ ,..., M ₅₅ are provided with a camera 104 connected to a control unit 105 configured by a microcomputer.

Rod _{R 11, R 12, ...,} R 15; R 21, R 22, ..., R 25; ...; R 51, R 52, ..., the length of the _{R 55,} the color taken by the camera 104 the marker _{M 11 , M 12, ..., M 15} ; M 21, M 22, ..., M 25; ...; M 51, M 52, ..., M 55 is so as not to overlap, are made different. For example,
L ₁ <L ₂ <L ₃ <L ₄ <L ₅
L ₂ −L ₁ = L ₃ −L ₂ = L ₄ −L ₃ = L ₅ −L ₄ ≧ ΔL
Where L ₁ is the length of the rods R ₁₁ , R ₁₂ ,..., R ₁₅ ,
L ₂ is the length of rods R ₂₁ , R ₂₂ ,..., R ₂₅ ,
L ₃ is the length of rods R ₃₁ , R ₃₂ ,..., R ₃₅ ,
L ₄ is the length of the rods R ₄₁ , R ₄₂ ,..., R ₄₅ ,
L ₅ is the length of the rods R ₅₁ , R ₅₂ ,..., R ₅₅ ,
ΔL is set to a positive value determined by the measurement object. Thus, the rod _{R 11, R 12, ...,} R 15; R 21, R 22, ..., R 25; ...; R 51, R 52, ..., the length of the _{R 55} is farther from the camera 104, large is, the color marker _M 11 taken by the camera _{104, M 12, ..., M} 15; M 21, M 22, ..., M 25; ...; M 51, M 52, ..., so _{M 55} do not overlap .

  The control unit 105 also controls a filler filling unit 107 for filling the pillow with a filler.

  FIG. 9 is a perspective view showing details of the filler filling unit 107 of FIG. In FIG. 9, the filling material filling unit 107 includes a pedestal 1070 for supporting the pillow 3, an electric cylinder 1071 provided on the pedestal 1070 for defining the pillow neck height of the pillow 3, and the electric cylinder 1071. A load cell 1072 and an indenter 1073 for detecting the load at the pillow neck position of the pillow 3 provided at the lower end, an electric cylinder 1074 provided on the pedestal 1070 for defining the pillow rear head height of the pillow 3, A load cell 1075 and an indenter 1076 for detecting a load at the pillow back head position of the pillow 3 and a filler such as a buckwheat shell and a flexible resin pipe provided at the lower end of the cylinder 1074 from an opening (not shown) of the pillow 3. And a filling machine 1077 for filling.

In the filling material filling unit 107 of FIG. 9, the operator manually fixes the positions of the electric cylinders 1071 and 1074 in advance to the neck position and the back head position of the pillow 3 corresponding to the neck and back of the subject as indicated by the arrows. Keep it. The control unit 105 adjusts the position of the indenters 1073 and 1076 below the electric cylinders 1071 and 1074 to the target neck height H _n ′ and the target occipital height H _h ′, and the pillow neck height at the cervical position and the occipital position. And the pillow occipital head height reaches the target cervical height H _n ′ and the target occipital head height H _h ′, and the cervical position and the occipital position of the pillow 3 have a predetermined cervical load, for example, 0.85 kgf and a predetermined occipital load. For example, the pillow 3 is filled with the filler through the opening (not shown) of the pillow 3 until it reaches 2.12 kgf. Each load can be detected by receiving output signals from the load cells 1072, 1075. Thereafter, the opening of the pillow 3 is closed to fix the shape of the pillow 3.

FIG. 10 is a flowchart for explaining the operation of the control unit 105 of FIG. This flowchart is stored in a read only memory (ROM) or a flash memory of the control unit 105. Further, before the operation of the control unit 105, the operator turns off the electric motor 106 and moves the rods R ₁₁ , R ₁₂ ,..., R ₁₅ ; R ₂₁ , R ₂₂ ,. ₂₅ ;..; The tip of R ₅₁ , R ₅₂ ,..., R ₅₅ is pressed against the back and neck of the subject of the pillow, and then the electric motor 106 is turned on to fix the rod holding mechanism 102 in the rod-fixed state (brake state). rod _R 11 in the camera 104 in _{the, R 12, ..., R 15} ; R 21, R 22, ..., R 25; ...; R 51, R 52, ..., the color of the rear end of the _{R 55} markers _M 11, M _{12, ..., M 15; M} 21, M 22, ..., M 25; ...; M 51, M 52, ..., shall perform the shooting _{M 55} to obtain the camera image shown in Figure 13.

  First, in step 1101, the median sagittal plane (right and left central plane) of the subject 1 of the pillow 3 is calculated. The median sagittal plane calculation step 1101 will be described later.

  Next, in step 1102, the ridge line curve S of the neck 11 and the occipital region 12 of the subject 1 shown in FIG. 11 is extracted from the median sagittal plane of the subject 1 calculated in step 1101, and the occipital region 12 in the ridge line curve S is extracted. The depth of the most concave portion of the neck 11 with respect to the neck is defined as a neck recess depth d.

Next, in step 1103, the target neck height H _n ′ and the target occipital height H _h ′ of the pillow 3 are calculated using equations (1) and (2). That is,
H _n ′ (mm) ← −0.25d + 73
H _h '(mm) ← 0.15d + 43

The target neck height H _n ′ and the target occipital head height H _h ′ can generally be expressed as follows.
H _n '(mm) ← αd + β
H _h '(mm) ← γd + δ
However, α, β, γ, and δ are constants satisfying | α |> | γ |, β> δ, and change according to the neck load and the occipital load. As a result, a gap having a height corresponding to the neck recess depth d is generated between the neck of the subject 1 and the pillow. The neck load and the occipital load are set to 0.85 kgf and 2.12 kgf for a Japanese adult, for example.

Next, in step 1104, the pillow 3 is filled with the filler F based on the target neck height H _n ′ and the target occipital head height H _h ′ calculated in step 1103. That is, the control unit 105 drives the electric cylinders 1071 and 1074 of the filler filling unit 107 to set the positions of the indenters 1073 and 1076 of the electric cylinders 1071 and 1074 to the target neck height H _n ′ and the target occipital height H _h. Fit to '. Next, the pillow neck height and the pillow back head height at the neck position and the back head position reach the target pillow neck height H _n ′ and the target pillow back head height H _h ′, and the pillow neck position and the pillow back head position Until the load reaches a predetermined neck load, for example, 0.85 kgf and a predetermined occipital load, for example, 2.12 kgf. In this case as well, each load can be detected by receiving output signals from the load cells 1072 and 1075. Thereafter, the opening of the pillow 3 is closed and fixed.

  In step 1105, the routine of FIG.

  Next, the median sagittal plane calculation step 1101 of FIG. 10 will be described with reference to FIG.

  In step 1301, the camera image shown in FIG.

Next, in step 1302, the color marker _{M 11, M 12, ...,} M 15; M 21, M 22, ..., M 25; ...; M 51, M 52, ..., picture from a specific color of _{M 55} 14 color marker _{M 11,} M ₁₂ of the binary data shown _{in, ..., M 15; M 21} , M 22, ..., M 25; ...; M 51, M 52, ..., to extract the _{M 55.}

Next, in step 1303, the color marker _{M 11, M 12, ...,} M 15; M 21, M 22, ..., M 25; ...; M 51, M 52, ..., a predetermined number the number of _{M 55} e.g. Whether it is 25 or not is discriminated. Rod _{R 11, R 12, ...,} R 15; R 21, R 22, ..., R 25; ...; R 51, R 52, ..., if _{R 55} is long as a normal operation, the number of color markers 25. Accordingly, the process proceeds to step 1304 only when the number of color markers is 25, and in other cases, the process proceeds to step 1308 and an error is assumed.

In step 1304, each color marker _{M 11, M 12, ...,} M 15; M 21, M 22, ..., M 25; ...; M 51, M 52, ..., and calculates the barycentric coordinates of _{M 55.}

Next, in step 1305, the rod _{R 11, R 12, ...,} R 15; in _{R 51,} R 52, _..., 1304 the coordinates of the tip of _{R 55; R 21, R 22} , ..., R 25; ... barycentric coordinates and the rod _R 11 _{computed, R 12, ..., R 15} ; R 21, R 22, ..., R 25; ...; R 51, R 52, ..., the length predetermined for _{R 55 L 11 , L 12, ..., L 15} ; L 21, L 22, ..., L 25; ...; L 51, L 52, ..., and calculates using the _{L 55.}

Next, in step 1306, the rod _{R 11, R 12, ...,} R 15; R 21, R 22, ..., R 25; ...; R 51, R 52, ..., on the basis of the coordinates of the tip of the _{R 55} subjects Interpolate the median sagittal plane.

  In step 1307, the process returns to step 1102 in FIG.

As described above, the target value H _n ′ is obtained in a predetermined load state only by obtaining the neck dent depth d with respect to the back of the subject and obtaining the target neck height H _n ′ and the target occipital height H _h ′ of the pillow 3. And H _h ′, the amount of filler such as buckwheat husk and soft resin pulp is adjusted, and as a result, the pillow shape and pillow rigidity of each subject can be realized. Therefore, it is not necessary to compare and select a plurality of pillows for each subject as in the past.

  About the pillow manufactured with the pillow manufacturing method and apparatus which concerns on this invention, 13 test subjects who differ in age, sex, and a body type experienced in the supine position. As a result of this experience, 11 subjects answered that they were comfortable. In addition, two subjects who answered that they were not comfortable were flat on the back of the skull.

  It should be noted that the present invention can be applied to any modifications within the obvious range of the above-described embodiment.

1: Subject 11: Neck 12: Back of head S: Edge curve H _n : Neck height H _n ': Target neck height H _h : Back of head height H _h ': Target back of head height F: Filler 101: rod groups _{R, R 11, R 12,} ..., R 15; R 21, R 22, ..., R 25; ...; R 51, R 52, ..., R 55: rod 102: the rod retaining mechanism 103: the frame mechanism 104 : Camera 105: Control unit 106: Electric pump 107: Filler filling unit 1070: Base 1071: Electric cylinder 1072: Load cell 1073: Indenter 1074: Electric cylinder 1075: Load cell 1076: Indenter 1077: Filling machines M ₁₁ , M ₁₂ , ... _{, M 15; M 21, M} 22, ..., M 25; ...; M 51, M 52, ..., M 55: color marker

Claims (5)

A cervical dent depth calculating step for calculating a cervical dent depth with respect to the occipital region of the subject in a standing posture; and
A target pillow neck height calculating step of calculating a target pillow neck height corresponding to the neck of the subject according to the neck recess depth;
A target pillow occipital head height calculating step for calculating a target pillow occipital head height corresponding to the occipital region of the subject according to the neck recess depth;
The pillow neck position corresponding to the neck and occipital area of the subject, the pillow neck height and the pillow back head height at the back head position reach the target pillow neck height and the target pillow back head height, and the pillow. A filling material filling step for filling the pillow until the load at the neck position and the occipital region reaches a predetermined neck load and a predetermined occipital load, and the neck portion of the subject and the pillow The pillow manufacturing method which provided the space | gap of the height according to the said neck dent depth in between. The target pillow neck height calculating step calculates the target pillow neck height using a first linear function of the neck recess depth,
The pillow manufacturing method according to claim 1, wherein the target pillow occipital head height calculating step calculates the target pillow occipital head height using a second linear function of the neck recess depth. The first linear function is:
H _n ′ (mm) = αd + β
And the second linear function is
H _h ′ (mm) = γd + δ
And
Where H _n ′ is the target pillow neck height,
H _h ′ is the height of the back of the target pillow,
d is the depth of the neck recess,
The pillow manufacturing method according to claim 2, wherein α, β, γ, and δ are constants that satisfy | α |> | γ | and β> δ. A plurality of rods having a tip that is pressed against the neck and back of the subject in a standing posture and a rear end with a marker;
A rod holding mechanism that holds the rods arranged in two dimensions in parallel;
A camera for photographing the marker of each rod;
A filler filling unit for filling the pillow with a filler;
A pillow comprising: a control unit that calculates a neck recess depth with respect to the back of the subject from the position of each marker imaged by the camera, and controls the filler filling unit based on the neck recess depth. manufacturing device. The filler filling unit includes:
A pedestal for supporting the pillow;
A first electric cylinder provided on the pedestal and defining a pillow neck height at a neck position of the pillow;
A first load detecting means provided at a lower end of the first electric cylinder, for detecting a load at a neck position of the pillow;
A second electric cylinder provided on the base and defining a pillow back head height at a back head position of the pillow;
A second load detecting means provided at the lower end of the second electric cylinder for detecting the load at the back of the head of the pillow;
The pillow manufacturing apparatus according to claim 4, further comprising a filling machine for filling the pillow with a filler.