JP5264793B2 - pillow - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a pillow, which is sufficiently high when a user is lying on his/her side, and is sufficiently low when the user is lying on his/her back. <P>SOLUTION: The pillow 1 includes a head rest member 2 formed of a flexible member, having a cavity 2a inside, formed in a flat rectangular parallelepiped form, and an energization device 4 provided on the cavity 2a to energize an upper part of the cavity 2a of the head rest member 2 upward to support it. The energization device 4 includes a pair of a right and a left link mechanisms 6 and 6 fixed to hold right-to-left distance to position an upper surface at the uppermost position when the user is lying on his/her side, and make an upper surface positioned at the lowest position when the user is lying on his/her back, and a mesh cloth 20 of which right and left end parts are fixed to lower parts of both link mechanisms 6 and 6 to stretch along an upper surface through outside parts of both link mechanism 6 and 6. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

  The present invention relates to a pillow used as a bedding, and more particularly to a pillow whose height changes between when lying on its back and when lying on its side.

  It is most natural and preferable that the posture of the person at sleep is a state in which the upright state is tilted as it is and turned upside down. At this time, the back head, which is the lowest position in the head, is slightly higher than the back. Therefore, it is desired that the pillow used as the bedding is set so that the position of the back of the head is slightly higher than the back when a person is sleeping on his / her back (hereinafter, referred to as lying on his / her back).

  On the other hand, when a person lays down during sleep and sleeps sideways (hereinafter, referred to as sideways sleep), the head is supported by the shoulder, so the position of the head is higher than when lying on the back. Therefore, it is desired that the pillow automatically changes in height depending on whether it is sleeping on its back or lying on its side.

  In view of this, a pillow that automatically changes its height has been proposed by taking advantage of the fact that the load applied to the pillow differs between sleeping on its back and sleeping on its side. For example, in Patent Document 1, a flat rectangular parallelepiped head-mounted member formed of a flexible member having a cavity inside, and a cavity so as to support the upper portion of the cavity of the head-mounted member by biasing upward A pillow having an urging device provided on is disclosed.

The biasing device includes a pair of left and right deformed rectangular link mechanisms that are fixed so that the distance between the left and right sides is maintained.
A mesh cloth is stretched between the rear links and the upper links constituting the left and right deformed rectangular link mechanisms. This mesh cloth prevents the head placed on the head-mounted member from sinking when lying down sideways. In addition, the upper board which consists of a hard resin flat plate formed in the substantially U shape is being fixed to the upper surface of the upper connection member which connects the rear part of both upper side links and this upper side link.

  Patent Document 2 discloses a flat rectangular parallelepiped head-mounted member formed of a flexible member having a cavity inside and a cavity so as to support the upper portion of the cavity of the head-mounted member by urging upward. A pillow having an urging device provided on is disclosed.

This urging device includes a pair of left and right link mechanisms fixed so that the distance between the left and right sides is maintained,
An upper plate made of a hard resin flat plate formed in a substantially U shape is fixed to the upper surfaces of the load support links constituting the left and right link mechanisms and the upper connecting member that connects the rear portions of the load support links. And mesh cloth is stretched over the opening of the upper board so that the opening of the front part and the center part which the upper board was cut off may be supplemented. This mesh cloth prevents the head placed on the head-mounted member from sinking when lying down sideways.

Japanese Patent No. 4286902 Japanese Patent No. 4286907

  However, in the pillows disclosed in Patent Documents 1 and 2, the sinking of the head is suppressed by the mesh cloth even when lying on the back. For this reason, there is a problem in that the user feels the presence of the mesh cloth and feels uncomfortable at the time of sleeping on the back, and the height of the pillow is not sufficiently lowered. Such a problem is particularly remarkable for a user having a shape in which the back of the head protrudes.

  When the tension of the mesh cloth is loosened, the above-mentioned problem can be solved. However, the temporal region sinks excessively when sleeping sideways. Therefore, the problem that the height of a pillow does not become high enough at the time of lying down sideways arises.

  In view of the above, an object of the present invention is to provide a pillow in which the height of the pillow is sufficiently high when lying on its side and the height of the pillow is sufficiently low when lying on its back.

  The pillow of the present invention has a flat rectangular parallelepiped head mounted member formed of a flexible member having a cavity inside, and an upper portion of the cavity of the head mounted member so as to urge upward to support the head mounted member. With the urging device provided, with the person's head placed in a supine position above the head-mounted member, the side where the neck is located is the front side, and the side where the crown is located is the back side. When the person's head is placed on the member and sleeping, it is a pillow having no hard member at least below the head and neck when viewed from above. The upper surface is positioned in the raised position when the person's head is placed sideways on the head-mounted member, and the upper surface is positioned when the person's head is placed face-up on the head-mounted member. A pair of left and right vertical movement mechanisms that are in the lowered position, and a left and right vertical movement mechanism that are stretched between the upper surfaces of the left and right vertical movement mechanisms A sheet-like member that extends to the lower part via the outside and is fixed at the lower part of both the left and right vertical movement mechanisms. When the stretched sheet-like member has a supporting force to the head and the upper surface is located at the lowered position, the sheet-like member is slackened between the upper surface and the lower portion, and bends between the upper surfaces. Is characterized by a loss of support to the head.

  According to the pillow of the present invention, it is stretched between the upper surfaces of the left and right vertical movement mechanisms, extends to the lower part via the outside of the left and right vertical movement mechanisms, and is fixed at the lower part of the left and right vertical movement mechanisms. The sheet-like member is provided. When the upper surfaces of the left and right vertical movement mechanisms are located at the raised position, the sheet-like member stretched between the upper surfaces has a supporting force for the head. Therefore, at the time of lying down, the head is supported at a high position by the sheet-like member, and the height of the pillow can be increased.

  On the other hand, when the upper surfaces of the left and right vertical movement mechanisms are positioned at the lowered position, the sheet-like member is relaxed between the upper surface and the lower portion, bends between the upper surfaces, and loses the support force to the head. . Therefore, since the head sinks without being supported by the sheet-like member when lying on its back, the height of the pillow can be lowered and the user does not feel uncomfortable. Furthermore, when the person's head is placed on the head-mounted member and lies down, there is no hard member at least below the head and neck when viewed from above. Therefore, when lying on its back, the sinking of the upper part of the cavity of the head-mounted member is not limited by the hard member, and it sinks freely, so that it becomes possible to reduce the height of the pillow and obtain a soft feel It becomes possible.

  In the pillow according to the present invention, it is preferable that the sheet-like member is also fixed to the upper front end of the left and right vertical movement mechanism.

  In this case, it is possible to prevent the movement of the sheet-like member in the front-rear direction accompanying the vertical movement of the upper surface of the vertical movement mechanism. When the upper surface of the vertical movement mechanism is located at the lowered position, the middle part in the front-rear direction of the sheet-like member is relaxed between the upper surface and the lower part, and is stretched very loosely between the upper surfaces, Losing support to the club. Therefore, when lying on the back, the protruding back head is depressed without being supported by the front-rear direction intermediate portion of the sheet-like member, so that the height of the pillow can be reduced. On the other hand, when the upper surface of the vertical movement mechanism is located at the lowered position, the front side portion of the sheet-like member is stretched between the upper surfaces. Does not affect the sinking of.

  Moreover, in the pillow of this invention, it is preferable that the upper surface rear side part of the right-and-left both vertical movement mechanism is connected by the connection member.

  In this case, since the distance between the upper surfaces of both the left and right vertical movement mechanisms is reliably maintained by the connecting member, the distance between the upper surfaces is not reduced by the weight of the head when lying on the side, and the head is supported by the sheet-like member. It becomes possible to support it reliably.

  In the pillow of the present invention, it is preferable that the sheet-like member is formed in a bag shape that wraps both the left and right vertical movement mechanisms and has a vent hole.

  In this case, the cavity communicates with the outside of the pillow through the vent hole. Thereby, when the upper surface of the pillow sinks, the volume of the cavity decreases, and the air inside the cavity flows out to the outside through the vent hole. Therefore, by appropriately forming the number and size of the air holes and setting the air outflow amount per unit time, the vertical speed of the pillow upper surface becomes appropriate, and rapid vertical movement can be suppressed and the pillow upper surface can be suppressed. It is possible to suppress the impact that occurs when the sinks. Also, the vertical movement of the pillow upper surface causes the cavity to repeatedly expand and contract, and the air inside the cavity is sucked and exhausted from the vent hole, so that the heat and humidity of the pillow are reduced, and the sleep becomes more comfortable.

  In the pillow of the present invention, the vertical movement mechanism includes a lower link extending horizontally in the front-rear direction, a front link having a lower end pivotably connected to a front end portion of the lower link, and a forward link inclined downward, and a lower link. The lower end of the rear link is pivotably connected to the rear end of the rear link, the front link is inclined to the upper end of the front link, and the rear end is pivotable to the middle of the rear link. An upper link connected to the upper link, a load mechanism link having a rear end side slidably mounted on an upper end portion of the rear link, and a front end side rotatably connected to the front end portion of the upper link, and an upper link And an urging means for urging the load supporting link to push upward.

  In this case, the upper surface of the load support link is the upper surface of the vertical movement mechanism. The load support link is stably positioned at the highest position when lying on the side, the load support link is stably positioned at the lowest position when lying on the back, and the position of the load support link according to the change of the sleeping posture. Changes smoothly. Therefore, the upper surface is stably located at the highest position when lying on the side, the upper surface is stably located at the lowest position when lying on the back, and the position of the upper surface is smoothly changed according to the change in sleeping posture. It becomes possible to obtain a pillow that changes.

The external appearance perspective view of the pillow which concerns on embodiment of this invention. FIG. 2 is a cross-sectional view taken along line II-II in FIG. 1. FIG. 3 is a cross-sectional view taken along line III-III in FIG. 2. The partial fracture top view of a pillow. The side view of the link mechanism at the time of the highest rise. The side view of the link mechanism at the time of the lowest fall. The schematic longitudinal cross-sectional view of the pillow at the time of lying on its back. The schematic cross-sectional view of a pillow when lying on its back. The schematic longitudinal cross-sectional view of the pillow at the time of lying down sideways. The schematic cross-sectional view of the pillow at the time of lying down sideways. Sectional drawing of the pillow which concerns on other embodiment of this invention. The external appearance perspective view which shows a bag-shaped sheet-like member.

  A pillow 1 according to an embodiment of the present invention will be described with reference to the drawings.

  As shown in FIGS. 1 to 4, the pillow 1 is disposed on the rear side of the head-mounted member 2 having a flat and substantially rectangular parallelepiped shape formed from a flexible member having a cavity 2 a therein, A lid member 3 covering the back of the cavity 2a of the head-mounted member 2; and a biasing device 4 provided in the cavity 2a so as to bias and support the upper portion 2b of the cavity 2a of the head-mounted member 2. ing. Here, in the state where the person's head is placed on the pillow 1, the side on which the top of the head is located is the rear side, and the side on which the person's neck is located is the front side. Further, the pillow 1 is covered with the outer covering cloth 5 in a state where the urging device 4 is disposed in the cavity 2 a and the lid member 3 is adhered to the rear end of the head mounting member 2.

  The head-mounted member 2 is formed of a flexible member, and here, is formed of a molded body made of low-resilience urethane foam. Low-resilience urethane foam has low repulsive force and excellent adaptability, and is therefore popular as a pillow material. However, the head-mounted member 2 may be made of high resilience urethane foam or the like.

  As shown in FIGS. 1 and 4, the external appearance of the head-mounted member 2 is a flat, substantially rectangular parallelepiped shape in which the shape in plan view is a substantially rectangular shape that is horizontally long in the left-right direction, as shown in FIGS. The upper surface is inclined forward, the lower front surface is inclined rearward, and the front upper corner is rounded with a large radius of curvature. The shape of the head-mounted member 2 is not limited to the illustrated shape as long as it is formed in a flat and substantially rectangular parallelepiped shape, and may be, for example, an elliptical shape when viewed from above.

  The cavity 2a is formed with the rear opening. The head-mounted member 2 has a large number of air holes 2c communicating with the outside of the cavity 2a at the center of the upper portion 2b of the cavity 2a, thereby preventing heat from being accumulated in the cavity 2a. A three-dimensional knitted fabric 5a (see FIGS. 2 and 3) is arranged on the outer cover cloth 5 located above the vent hole 2c so that the vent from the vent hole 2c is also present in the portion where the vent hole 2c does not exist. It is acting. Furthermore, the vertical speed of the pillow 1 is made appropriate by the amount of air that is sucked and exhausted through the air holes 2c.

  The upper portion 2b of the cavity 2a of the head mounting member 2 is predetermined so that the presence of the urging device 4 disposed in the cavity 2a is not felt when the person's head is placed on the pillow 1 so as not to feel uncomfortable. The above thickness, for example, a thickness of about 2 cm to 3 cm is required. However, if the overall height of the pillow 1 is too high, a sufficiently low level cannot be obtained when lying on its back, which is not preferable. Therefore, the head-mounted member 2 is formed such that the thickness of the lower portion 2d of the cavity 2a is thinner than the thickness of the upper portion 2b of the cavity 2a. The thickness of the lower portion 2d of the cavity 2a is preferably as thin as about 1 cm, for example.

  However, if the cavity 2a lower part 2d is made thin, sufficient strength cannot be obtained, and it is particularly easy to tear during molding. Therefore, by forming the head mounting member 2 by covering the outer periphery of the inner mold for the cavity 2a with the cloth 2e, the cloth 2e is attached to the entire inner surface of the cavity 2a to reinforce the head mounting member 2. In addition, by providing the cloth 2e, it is possible to prevent air leakage from the head mounting member 2 other than the vent hole 2c and excessive swelling and breakage of the cavity 2a.

  The lid member 3 is formed of a flexible member in the same manner as the head-mounted member 2, and here is formed of a molded body made of low-resilience urethane foam. The lid member 3 has a thickness approximately the same as the front side portion 2h of the head-mounted member 2, and has a flat, substantially rectangular parallelepiped that is short in the front-rear direction so that its front end surface matches the shape of the rear end surface of the head-mounted member 2. It is formed into a shape. The rear end surface of the head-mounted member 2 is formed substantially vertically. With the urging device 4 and the like disposed in the cavity 2a, the front end surface of the lid member 3 is aligned with the rear end surface, and the joint surface is The cavity 2 a is sealed by the lid member 3 by being closely fixed with an adhesive or the like. Since the lid member 3 is located at the rear end of the pillow 1, the head does not rest on the top of the pillow 1, and even if the adhesive or the like is cured, the user does not feel its presence. The height of 1 can be reduced.

  The urging device 4 includes a pair of link mechanisms 6 and 6 that are spaced apart from each other in the cavity 2a in the lateral direction. Each link mechanism 6 includes a lower link 7 extending horizontally in the front-rear direction, a front link 8 having a lower end pivotably connected to a front end portion of the lower link 7, and a lower link 7. A rear link 9 having a lower end pivotably connected to a rear end, a front end at an upper end of the front link 8, and a rear end at an intermediate portion of the rear link 9. The upper link 10 is connected to the upper link 10 and the load support link 11 is slidably mounted on the upper end of the rear link 9 and the front is rotatably connected to the front end of the upper link 10. .

  Here, the rear link 9 stands up in a predetermined forward tilted substantially vertical state, that is, has a forward inclination angle β of more than 0 degree and not more than 30 degrees, preferably not less than 15 degrees and not more than 25 degrees. It is configured. On the other hand, the forward inclination angle α of the front link 8 is configured to be larger than the forward inclination angle β of the rear link 9. More specifically, the product of the sine of the forward inclination angle α of the front link 8 and the link length of the front link 8 is the sine of the forward inclination angle β of the rear link 9 and the link of the rear link 9. It is configured to be twice or more, preferably 2.5 times or more larger than the product of the length. And the front side link 8 is comprised so that the load support link 11 may incline forward, and the link length of the front side link 8 is longer than the link length of the rear side link 9. FIG. When the biasing device 4 is disposed in the cavity 2a, the load support link 11 faces the upper portion 2b of the cavity 2a.

  The lower link 7, the front link 8, the rear link 9 and the load support link 11 are each made of an elongated metal flat plate having the same width, and the lower link 7 and the front link 8, and the front link 8 and the load support link. Although not shown in detail, the links 11 are rotatably connected by a hinge mechanism. A pin mechanism is used between the lower link 7 and the rear link 9 by using rear link attachment pieces 7a and 7a integrally formed at the rear end portion of the lower link 7 so as to protrude upward from both left and right ends. Are pivotally connected.

  On the other hand, the upper link 10 is formed by separating a pair of elongated metal flat plates by a distance exceeding the width of the lower link 7 or the like. The rear end portion of the upper link 10 is rotatably connected to upper link attachment pieces 9a, 9a formed integrally with the middle portion of the rear link 9 so as to protrude forward from both left and right ends by a pin mechanism. . Further, the front end portion of the upper link 10 is rotatably connected by a pin mechanism to upper link attachment pieces 11a and 11a formed integrally with the front end portion of the load support link 11 so as to protrude downward from both left and right ends. Yes.

  The rear link 9 includes a sliding portion 9b covered with a low friction material such as polytetrafluoroethylene on an upper end portion obtained by extending a rotation connecting portion with the upper link 10 upward. A load support link 11 is placed on the top. Since the sliding portion 9b of the rear link 9 is covered with the low friction material, it smoothly slides in the front-rear direction and noise generated during the sliding is suppressed. Note that the sliding portion 9b may be one in which the upper end portion is simply rounded without being covered with the low friction material.

  As shown in FIGS. 3 and 4, the left and right lower links 7 and 7 are connected to each other in parallel by the lower connecting member 12 so as to maintain a predetermined separation distance between the left and right. The lower connecting member 12 is an elongated rectangular metal flat plate, is fixed by welding or the like, and extends rearward from the rotary connecting portion between the lower links 7 and 7 and the rear links 9 and 9. The parts 7b are connected to each other.

  The left and right rear links 9, 9 are connected in parallel to each other so as to maintain a predetermined separation distance between the left and right by the intermediate connecting member 13. The intermediate portion connecting member 13 is formed of a long and thin rectangular metal flat plate, and is fixed by welding or the like, so that the rotating link portion between the lower links 7 and 7 of both the rear links 9 and 9 and the upper link 10. , 10 are connected to each other.

  The left and right load support links 11 are connected in parallel to each other so as to maintain a predetermined separation distance between the left and right by the upper connecting member 14. The upper connecting member 14 is formed of a long and thin rectangular metal flat plate, and is fixed by welding or the like, and is behind the portion that contacts the sliding portion 9b of the rear links 9 and 9 of the load supporting links 11 and 11. The parts are connected. In addition, each connection member 12,13,14 may be formed integrally with each each link 7,9,11, respectively.

  As shown in FIGS. 2 and 5, each link mechanism 6 configured as described above includes a lower link 7 that receives the entire load, and a front side that is largely inclined forward so that it can easily fall down with a small downward load. A link 8, a rear link 9 that leans forward and rises substantially vertically so as to be able to withstand a large downward load, and an upper link 10 that connects the front link 8 and the rear link 9. Each of the links 7, 8, 9, and 10 is rotatably connected to form a substantially rectangular link.

  However, the amount of movement at the time of tilting differs between the front link 8 having a large tilt angle β and the rear link 9 having a small tilt angle α and being tilted forward and substantially vertical. Accordingly, when the upper rotating part of the rear link 9 and the upper rotating part of the front link 8 are connected by the upper link 10 in accordance with the front link 8 having a small amount of movement, the upper link 10 is greatly lowered downward, If the upper link 10 is a link that supports the upper portion 2b of the cavity 2a of the head-mounted member 2, there arises a disadvantage that the upper surface of the pillow 1 is largely inclined.

  Therefore, in the link mechanism 6 of the main pillow 1, the rear link 9 is extended further upward than the rotational connection portion with the upper link 10 so that the supporting link does not greatly lower and lower when the link is lowered. In addition, the load supporting link 11 is slidably mounted on the sliding portion 9b which is the extended upper end portion, and the front portion of the load supporting link 11 is rotatably connected to the front end portion of the upper link 10. By configuring the link mechanism 6 in this way, the link that supports the upper portion 2b of the cavity 2a of the head-mounted member 2 becomes the load support link 11, and the inclination thereof can be set arbitrarily close to the horizontal.

  As shown in FIGS. 2 to 4, the urging device 4 includes tension springs 15 and 15 as urging means for urging the upper links 10 and 10 and the load support links 11 and 11 so as to push them upward. Yes. Each of the tension springs 15 has one end fixed to the rear outer side of the rotating link with the rear link 9 of the lower link 7, and the other end forward of the rotating link with the front link 8 of the load support link 11. It is stretched by being fixed to the outside.

  Here, the hook on one end side of the tension spring 15 is hooked in a hole of a spring mounting piece 7 c that is integrally formed so as to protrude upward from the left and right outer end portions of the extension portion 7 b of the lower link 7. Then, the hook on the other end side of the tension spring 15 is integrally formed so as to protrude downward outward in the left-right direction from an extension portion 11b that extends forward from a rotational connection portion with the front link 8 of the load support link 11. The spring mounting piece 11c is hooked into the hole. In this way, the tension spring 15 pushes the load support link 11 upward and urges the front link 8 to rise.

  Further, since the front end of the tension spring 15 is fixed to the extension portion 11b that protrudes forward from the rotation connecting portion, the extension portion 11b is lowered by the urging force of the tension spring 15 and the load supporting link 11 is rotated. The main body portion behind the dynamic connecting portion is acted to lift. As a result, the load support link 11 has a small contact pressure with the sliding portion 9b, and can easily slide on the sliding portion 9b.

  The urging device 4 includes stoppers 16 and 16 as restricting means for restricting rearward inclination of the rear links 9 and 9. Each stopper 16 is provided in the vicinity of the rotation connecting portion. Here, the stopper 16 is configured by fixing a plate piece provided with a downward projecting portion on the lower surface of a predetermined rear portion of the load support link 11. When the rear link 9 comes into contact with the downward projecting portion, the rear link 9 is restricted from tilting backward from a predetermined forward tilted and substantially vertical state. When the rear link 9 is in the rearward tilted state, the rear link 9 is easily tilted to the rear opposite to the front link 8, and the link mechanism 6 may be damaged. Therefore, the stopper 16 prevents this.

  In addition, you may provide a stopper in the vicinity of the rotation connection part with the rear link 9 of the lower link 7. In this case, for example, the stopper is configured by bending inward the tip portion protruding upward from the rear portion of the rear link attachment piece 7a for rotational connection with the rear link 9 of the lower link 7. That's fine.

  As described in detail in Patent Document 1, the link mechanisms 6 and 6 configured as described above are configured so that the load support links 11 and 11 can be used when lying on the side and when nothing is placed on the pillow 1 when not in use. The load support links 11 and 11 are stably located at the lowest position when lying on the back, and the positions of the load support links 11 and 11 are smoothly changed according to the change of the sleeping posture. To change. The upper surfaces of the load support links 11 and 11 are the upper surfaces of the link mechanisms 6 and 6. Accordingly, the link mechanisms 6 and 6 are vertical movement mechanisms in which the upper surface is located at the highest position when lying on the side and the upper surface is located at the lowest position when lying on the back.

  Further, the urging device 4 includes shock absorbing blocks 17 and 17, a lower plate 18, an upper plate 19, a mesh cloth 20, a sponge member 21, and a flexible sheet 22.

  The impact absorbing blocks 17 and 17 absorb the impact caused by the fall of the front links 8 and 8 and the rear links 9 and 9 when the load supporting links 11 and 11 are lowered, and suppress the generation of impact sound. The shock absorbing blocks 17 and 17 are formed of a flexible member, and here are formed of a molded body made of low-resilience urethane foam.

  Here, the shock absorbing blocks 17, 17 are positioned between the links 8, 9 and the lower link 7 when the front link 8 and the rear link 9 are collapsed. It is fixed by bonding or the like. The shock absorbing block 17 for the front link 8 is provided on the upper surface of an extension portion 7e that extends forward from a rotational connection portion of the lower link 7 with the front link 8. The shock absorbing blocks 17 and 17 may be fixed to the lower surfaces of the front link 8 and the rear link 9 by adhesion or the like.

  The position when the front link 8 and the rear link 9 fall down and the links 8 and 9 deflect the shock absorbing blocks 17 and 17 to the minimum thickness is the lowest lowered position of the load support link 11. Further, since the shock absorbing blocks 17 and 17 that have been bent have a restoring force, the urging force is applied to the front link 8 and the rear link 9 so as to be displaced upward, and the upward urging by the tension springs 15 and 15 is applied. Assist. In addition, you may use spring members, such as a coil spring and a leaf | plate spring, as the shock absorption blocks 17 and 17. FIG.

  The lower plate 18 is made of a hard resin flat plate made of PET (polyethylene terephthalate) or the like, and has a substantially rectangular shape substantially the same as the lower surface of the cavity 2a, and a center located below the head and the head placed on the upper surface of the pillow 1. The shape is formed by cutting away the portion, that is, a substantially U shape with the front opened. The lower plate 18 is fixed to the lower surfaces of the lower links 7 and 7 and the lower connecting member 12 by rivets or the like (not shown). By placing the lower plate 18 on the lower surface of the cavity 2a, the urging device 4 can be disposed at a predetermined position in the cavity 2a. In addition, since the lower links 7 and 7 which are narrow metal members and the lower surface of the lower connecting member 12 are covered with the lower plate 18, the user does not sense the presence of the lower metal member of the pillow 1, I don't feel uncomfortable.

  The upper plate 19 is made of a hard resin flat plate made of PET or the like, covers the upper surfaces of the load support links 11, 11 and the upper connecting member 14. It is formed in a letter shape. The upper plate 19 is fixed to the upper surfaces of the load support links 11, 11 and the upper connecting member 14 by rivets (not shown). As described above, since the upper surfaces of the load supporting links 11 and 11 and the upper connecting member 14 which are narrow metal members are covered with the upper plate 19, the user can sense the presence of the metal member from the upper part of the pillow 1. Without feeling uncomfortable.

  The mesh cloth 20 is a sheet-like member made of one piece of mesh cloth, is stretched between the upper surfaces of the left and right link mechanisms 6 and 6, and passes through the outer sides of the left and right link mechanisms 6 and 6. And both left and right end portions are fixed to the lower portions of the left and right link mechanisms 6 and 6.

  In the embodiment, only the left and right ends of the mesh cloth 20 are fixed to the lower surfaces of the left and right ends of the lower plate 18 using an adhesive or the like, and the other portions are not fixed. The mesh cloth 20 is provided so as to extend to the front portion and the center portion of the upper plate 19 that are cut out and cover the upper surface of the upper plate 19. In this way, the upper and lower ends of the mesh cloth 20 are fixed to the lower surfaces of the left and right end portions of the lower plate 18 so that the mesh fabric 20 passes above the left and right load support links 11 and 11. The left and right other end portions are fixed to the lower surface of the left and right other end portions of the lower plate 18 through the upper surface of 19. The length of the mesh cloth 20 is determined so that the mesh cloth 20 is strongly stretched between the left and right sides of the upper plate 19 when the upper surfaces of the link mechanisms 6 and 6 are located at the highest position.

  The fixing position of the mesh cloth 20 is not limited to the lower surface of the lower plate 19, and the lower portion of the link mechanisms 6, 6, that is, the portion that does not move up and down with the vertical movement of the upper surfaces of the link mechanisms 6, 6, Any part that has less vertical movement than vertical movement may be used. For example, the mesh cloth 20 may be fixed to the upper side of the lower links 7 and 7, the lower connecting member 12, or the lower plate 18. Further, the mesh cloth 20 is not limited to cover the upper surface of the upper plate 19, and may be stretched between the upper surfaces of the link mechanisms 6 and 6. For example, when the upper plate 19 is not provided, the mesh cloth 20 may be stretched between the upper surfaces of the load support links 11 and 11. The mesh cloth 20 may be a sheet-like member, and may be a non-mesh cloth, a resin sheet, a net, or the like.

  The sponge member 21 is formed from a high resilience urethane foam as a flexible member, and is provided on the uppermost surface of the urging device 4. By providing such a sponge member 21, the user may feel the hardness of the upper plate 19 from the upper surface of the pillow 1 even if the head mounting member 2 is sufficiently soft and the upper portion 2b of the cavity 2a is thinned to some extent. Absent. The sponge member 21 is formed with a vent hole that communicates with the vent hole 2 c of the head-mounted member 2.

  The flexible sheet 22 is formed from a single soft resin sheet made of urethane or the like, and left and right between the front upper surface of both load support links 11 and 11 and the front lower surface of both lower links 7 and 7. It is stretched across. The flexible sheet 22 reinforces the front side portion of the mesh cloth 20 and forms an arc shape projecting to the front surface to improve the feel of the pillow 1 that hits the shoulder of the user when lying sideways.

  In the pillow 1 configured as described above, the upper surfaces of the link mechanisms 6 and 6 are located at the highest position when not in use and lying down, and therefore the upper surface of the pillow 1 is also located at the highest position. In general, the height of the pillow when sleeping sideways (the distance between the back of the head and the saddle) is suitably 8 to 16 cm.

  On the other hand, since the upper surfaces of the link mechanisms 6 and 6 are located at the lowest position when lying on the back, the upper surface of the pillow 1 is also located at the lowest position. Generally, the height of the pillow when lying on the back is suitably 1 cm to 3 cm, and the user feels uncomfortable when a hard member enters between the back of the head and the saddle.

  When the upper surfaces of the link mechanisms 6 and 6 are located at the lowest lowered position, if the mesh cloth 20 positioned between the left and right upper surfaces is strongly stretched, the head is supported by the mesh cloth 20 and the height of the pillow 1 is increased. Cannot be as low as 1 cm. However, when the mesh cloth 20 is stretched loosely, the temporal region sinks excessively when sleeping on the side, causing a sense of incongruity. Therefore, it is necessary that the mesh cloth 20 is stretched loosely when lying on its back and the mesh cloth 20 is tightly stretched when lying on its side.

  Therefore, as described above, the mesh cloth 20 of the main pillow 1 is provided so as to cover the upper surface of the upper plate 19, and only the left and right ends thereof are fixed to the lower surfaces of the left and right ends of the lower plate 18. The part is not fixed. Accordingly, when the upper surfaces of the link mechanisms 6 and 6 are located at the highest position, the mesh cloth 20 is stretched sufficiently strongly between the left and right sides of the upper plate 19 and has a supporting force to the head. Therefore, excessive sinking of the head is prevented, and the user does not feel uncomfortable.

  On the other hand, when the upper surfaces of the link mechanisms 6 and 6 are located at the lowest lowered position, the vertical distance between the lower plate 18 and the upper plate 19 is shortened as shown in FIG. And the upper plate 19 are loosened, and are stretched very loosely between the left and right sides of the upper plate 19 to lose the support force to the head. Therefore, the head sinks greatly, and the height of the pillow 1 becomes sufficiently low.

  In the embodiment, only the left and right ends of the mesh cloth 20 are fixed to the lower surfaces of the left and right ends of the lower plate 18 and the other portions are not fixed. However, other portions of the mesh cloth 20 may be fixed in order to prevent the mesh cloth 20 from moving in the front-rear direction due to the vertical movement of the urging device 4. For example, the mesh cloth 20 may be fixed to the left and right front ends of the upper plate 19 using an adhesive or the like.

  Also in this case, when the upper surfaces of the link mechanisms 6 and 6 are located at the lowest position, the middle portion in the front-rear direction of the mesh cloth 20 is relaxed between the lower plate 18 and the upper plate 19, and the left and right sides of the upper plate 19 are left and right. It becomes very loosely stretched between both sides. Therefore, since the protruding back head is depressed without being supported by the front-rear direction intermediate portion of the mesh cloth 20, the height of the pillow 1 is sufficiently lowered. On the other hand, the front side portion of the mesh cloth 20 is strongly stretched between the left and right sides of the upper plate 19 when the upper surfaces of the link mechanisms 6 and 6 are located at the lowest position. And does not affect the sinking of the head.

  Furthermore, there are a head-mounted member 2, an outer cover cloth 5, a mesh cloth 20, a sponge member 21, and a flexible sheet 22 below the head and neck in a top view, all of which are soft members and hard members. Does not exist. The lower plate 18 and the upper plate 19 which are hard members are formed in a substantially U shape, and a front portion and a central portion located below the head portion and the neck portion in a top view are cut off. Therefore, when the head is placed on the upper surface of the pillow 1, the hard member below the pillow 1 is sensed so that it does not feel uncomfortable and a soft feel can be obtained. In addition, since there is only a soft member below the head and neck, a soft feel can be obtained without increasing the thickness of the upper portion 2b of the cavity 2a of the head-mounted member 2. In addition, since the soft feel can be obtained without using the thick head-mounted member 2 in the upper portion 2b of the cavity 2a, the height of the pillow 1 can be kept low.

  Hereinafter, a pillow 1A according to another embodiment of the present invention will be described with reference to the drawings. Since the pillow 1A is similar to the pillow 1 described above, the same members are denoted by the same reference numerals, and only differences will be described.

  As shown in FIGS. 11 and 12, the pillow 1 </ b> A includes a bag-like sheet-like member 31 instead of the mesh cloth 20. The sheet-like member 31 is formed in a substantially rectangular bag shape and wraps all the urging devices 4 except the flexible sheet 22. For example, the sheet-like member 31 is formed in a substantially rectangular bag shape with a part of the bottom surface opened, and the biasing device 4 is inserted into the sheet-like member 31 from this opening, and the peripheral edge of the opening is bonded to the lower plate 18. What is necessary is just to adhere with an agent.

  A vent hole 31 a is formed in the upper center portion of the sheet-like member 31, and the cavity 2 a communicates with the outside of the pillow 1 in cooperation with the vent hole 2 c of the head-mounted member 2. Thereby, when the upper surface of the pillow 1 sinks, the volume of the cavity 2a decreases, and the air inside the cavity 2a flows out to the outside through the vent holes 2c and 31a. Therefore, by appropriately forming the number and size of the air holes 2c and 31a and setting the air outflow amount per unit time, the vertical speed of the upper surface of the pillow 1 becomes appropriate, and rapid vertical movement can be suppressed. The impact generated when the upper surface of the pillow 1 sinks to the lowest position can be suppressed. Further, the vertical movement of the upper surface of the pillow 1 causes the cavity 2a to repeatedly expand and contract, and a large amount of air inside the cavity 2a is sucked and exhausted from the vent holes 2c and 31a, so that the heat and humidity of the pillow 1 are reduced. Sleep is even more comfortable.

  Although the embodiment of the present invention has been described above, the present invention is not limited to this, and various modifications can be made as appropriate.

  For example, in the embodiment, the case where the urging device 4 includes the link mechanisms 6 and 6 has been described. However, the link mechanism is not limited to the link mechanisms 6 and 6 as long as it is a vertical movement mechanism in which the upper surface is located at the raised position when lying on its side and the upper surface is located at the lowered position when lying on its back. For example, the urging device 4 may include a link mechanism such as the deformed rectangular link mechanism described in Patent Document 1 as a vertical movement mechanism. Further, the urging device 4 may be provided with a vertical movement mechanism in which the upper surface moves up and down by electricity or fluid pressure.

  DESCRIPTION OF SYMBOLS 1,1A ... Pillow, 2 ... Head mounting member (soft member), 2a ... Cavity, 4 ... Energizing device, 5 ... Outer cloth (soft member), 6 ... Link mechanism (vertical movement mechanism), 7 ... Lower link 8 ... front link, 9 ... rear link, 10 ... upper link, 11 ... load support link, 14 ... upper connecting member, 15 ... tension spring (biasing means), 18 ... lower plate, 19 ... upper plate, 20 ... mesh cloth (sheet-like member, soft member), 21 ... sponge member (soft member), 22 ... flexible sheet (soft member), 31 ... bag-like sheet-like member, 31a ... vent.

Claims (5)

A flat rectangular parallelepiped head mounted member formed from a flexible member having a cavity inside;
A biasing device provided in the cavity so as to bias and support the upper part of the cavity of the head-mounted member upward;
The person's head is placed on the head-mounted member with the side where the neck is located as the front side and the side where the top of the head is located as the rear side with the person's head placed on the head above the head-mounted member. When sleeping, it is a pillow having no hard member at least below the head and neck in top view,
The urging device is fixed so that the distance between the left and right sides is maintained, and when the person's head is placed on the head-mounted member sideways, the upper surface is located at the raised position, and the person is placed on the head-mounted member. A pair of left and right up-and-down movement mechanisms that when the head is placed with the head on its back and the upper surface is positioned in the lowered position
A sheet-like member that is stretched between the upper surfaces of the left and right vertical movement mechanisms, extends to the lower part via the outside of the left and right vertical movement mechanisms, and is fixed at the lower part of the left and right vertical movement mechanisms. ,
When the upper surface of both the left and right vertical movement mechanisms is located at the raised position, the sheet-like member stretched between the upper surfaces has a supporting force to the head, and when the upper surface is located at the lowered position, A pillow, wherein relaxation occurs between the lower portion and the sheet-like member that bends between the upper surfaces loses support to the head.   The pillow according to claim 1, wherein the sheet-like member is also fixed to the front side front end portion of the left and right vertical movement mechanism.   The pillow according to claim 1 or 2, wherein the upper side rear side portions of the left and right vertical movement mechanisms are connected by a connecting member.   The pillow according to any one of claims 1 to 3, wherein the sheet-like member is formed in a bag shape that wraps the left and right vertical movement mechanisms and has a vent hole. The vertical movement mechanism includes a lower link that extends horizontally in the front-rear direction, a lower end that is pivotally connected to the front end of the lower link, a front link that tilts forward, and a lower end that is located at the rear end of the lower link. A rear link that is pivotably connected and tilts forward; an upper link in which the front end is connected to the upper end of the front link and the rear end is connected to the middle of the rear link, respectively; A link mechanism comprising a load support link in which the rear end side is slidably mounted on the upper end portion of the rear link and the front end side is rotatably connected to the front end portion of the upper link;
The pillow according to any one of claims 1 to 4, further comprising an urging unit that urges the upper link and the load support link to push upward.

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