KR20110117066A - Pillow - Google Patents

Abstract

The height of the pillow at the time of sleeping upward and at the time of sleeping toward the side automatically changes reliably automatically according to the sleeping position, and adjustment is unnecessary and stable. In the urging device 4 provided in the cavity of the head member 2 of the pillow 1, the rear end side is slidably mounted to the upper end of the rear link 9, and the front end is the front end of the upper link 10. The link mechanism 6 which has the load support link 11 connected to the part so that rotation is possible, and the tension spring 15 which pushes up the load support link 11 upwards are provided. In the state where the human head is not placed on the head member, the product of the sine of the inclination angle forward and the link length is greater than twice the front link 8 than the rear link 9 and the front of the rear link. If the inclination angle of the heel is greater than 0 degrees and is 20 degrees or less, and the front link 8 and the rear link 9 fall forward with the head part mounted on the head member 2, the load supporting link 11 The biasing force of the tension spring 15 is set so that is lowered to the lowest position.

Description

Pillow {PILLOW}

TECHNICAL FIELD The present invention relates to a pillow for use as bedding, and more particularly, to a pillow that automatically changes in height at bedside facing up and at bedside lying down. .

It is preferable that the posture at the time of sleep of a person is most naturally lying in an upright state and lying down. At this time, the back of the head, which is the lowest position in the head, is slightly higher than the back. Therefore, when the pillow used for bedding is a person sleeping upwards (hereinafter referred to as bedtime upwards), it is preferable that the position of the back of the head is slightly higher.

On the other hand, when a person is sleeping sideways while sleeping and is lying sideways (hereinafter referred to as a sideward bedtime), the head is supported by the shoulders. Increases. Therefore, the height of the pillow is preferably changed automatically according to the bedtime facing upward and the bedside facing.

However, the conventional general pillow has been produced by setting the intermediate height corresponding to the two sleeping postures by assuming that the user sleeps while leaning in the upward and lateral postures. As a result, it was too high when going to bed upward and too low when going to bed sideways, which was not satisfactory. In addition, soft, low-elasticity urethane foam pillows are commercially available, but when the bed to the top is kept low enough, when the bed to the side is too low, the pillow does not play a role. In addition, there are commercially available high-side pillows with a short side pipe and beads with plenty of bedding, but they are too high for bedtime and are not suitable for the neck. There is also concern.

Thus, various pillows have been proposed in which the height changes automatically according to the sleeping position. In such a pillow, it is often identified whether it is a posture facing upwards or a side facing, and the height of a pillow changes in accordance with an identification result. For example, Patent Literatures 1 to 3 embed a plurality of sensors that detect pressure or an area on a flat mat or the like, and detect each sensor whether a part contacting the flat mat is a side part or a back part of the body. The sleep position is determined based on the contact area obtained from the result, and the amount of air in the bag in the pillow is adjusted by using an electric compressor or the like, or the link member is lifted and lifted by a motor according to the sleep position. Changing the height is disclosed.

However, in such a pillow, when the body deviates from a predetermined portion of the flat mat by twisting, the sleeping position cannot be accurately identified, and a malfunction occurs. Moreover, since a motor sound and a vibration generate | occur | produce and a power supply is needed, it is not preferable.

Therefore, a pillow is proposed which automatically changes in height by using different loads on the pillows in the upright position and the laterally facing position. For example, Patent Document 4 describes a lower support plate, a head support plate that is disposed in substantially parallel state with respect to the lower support plate, and is provided on the lower support plate to maintain a substantially parallel state. And a support plate support mechanism for supporting the partial support plate to move up and down, and a cushioning portion provided on the head support plate, wherein the support plate support mechanism has a lower end connected to the lower support plate so as to be rotatable. A first support member and a second support member which are connected to the support plate in a rotatable manner and are inclined and extended from the lower support plate to the head support plate, and to a load that causes them to fall in an inclined direction. A coil spring for biasing the first and second support members through the head support plate. A pillow having a urging means is disclosed.

When the pillow is placed in the cushion portion and the head is sleeping upwards, the first and second supporting members fall down due to the weight of the head, which resists the biasing force of the biasing means. The head support plate is lowered to the lowest position, so that the height is minimum. If the head is held in a lateral and lateral position, and the head is held by the shoulder and the load acting on the head support plate decreases, the first and second support members are subjected to the force applied by the biasing means. And the pillow rises to a height where the load due to the head and the counter-force are balanced. And this pillow is equipped with the adjustment means which adjusts the taxing force of a taxing means, and can adjust the height at the time of going to bed laterally. Moreover, this pillow is equipped with the stopper mechanism by which a support member locks at a predetermined inclination angle in response to the biasing force of a biasing means, and the height at the time of non-use becomes uniform.

[Patent Document 1] Japanese Patent Laid-Open No. 2005-342457

[Patent Document 2] Japanese Patent Laid-Open No. 2004-57505

[Patent Document 3] Japanese Patent Laid-Open No. 2001-340198

[Patent Document 4] Japanese Patent Laid-Open No. 2007-98153

DISCLOSURE OF INVENTION

Problems to be Solved by the Invention

However, in the pillow disclosed in Patent Document 4, the height of the state where the load by the head portion and the biasing force of the biasing means is balanced becomes the height at the time of sleeping toward the side. Therefore, in order to make the height at the time of sleeping toward the side appropriate by the user, it is necessary for each user to adjust the taxing force of the taxing means in accordance with his or her physique or head weight, but such adjustment is difficult. There is a task to do. In addition, since the height of the pillow changes due to slight fluctuations in the load by the head part at the time of bedtime, there is a problem that the height at the time of going to the side is not stabilized and the user has to feel soft and elastic.

SUMMARY OF THE INVENTION In view of the above points, the present invention provides a pillow in which the height at the time of sleeping upward and at the time of sleeping toward the side automatically changes reliably automatically according to the sleeping position, and adjustment is unnecessary and the height is stable. The purpose.

Means to solve the problem

The inventor of the present invention, when carrying out the invention, first found that the order of the body parts abutting on the pillow in the upward facing position and the laterally facing position and the positions under which the loads are different from each other. In other words, when a person sleeps in an upright position, he instinctively bends the neck up and lifts the head to sleep upward to protect the important head. As a result, when a person sleeps in an upright position, he or she contacts a futon or pillow in the order of the back, neck, and back of the head. On the other hand, when a person sleeps in a side-by-side position, he or she contacts the futon or pillow in the order of the lateral arm, shoulder, and temporal part. As a result, when sleeping in a side-facing position, the temporal head first contacts the pillow, so that the neck part is lightly abutting the pillow.

Accordingly, the load applied to the pillow when sleeping in the upward position is greatest in the lower part of the neck at first, and then a part of the lower part of the head is transferred to the lower head, and the lower part of the neck and the lower head are roughly the same. That is, at the time of going to bed upward, the load is applied under the neck first, and then the load is distributed under the head. On the other hand, the load applied to the pillow when sleeping in the sideward position is hardly applied under the neck but is concentrated under the head. That is, at the time of going to the side, the load concentrates only under the head part.

Thus, since the load position according to the sleeping position was found to be different, the front part of the pillow under the neck portion is lowered with a light load, and the center portion of the pillow under the head portion is a structure capable of withstanding a larger load. It became clear that when going to bed upwards, it descended smoothly, and when going to bed sideways, it became stable and could maintain the height.

At this time, the greater the difference in load resistance between the lower part of the neck and the temporal part, the more smooth the lowering at the time of going to the upper side and the higher the maintenance of the height at the time of going to the side. We do not depend on individual difference of. Specifically, it is preferable that the withstand load of the rear part of the pillow is two times or more larger than the withstand load of the front part. When the load capacity of each part is such a load, when a person with a light head and a light weight slept in an upright position, it descends smoothly, while a person with a large body and a heavy head is sideways. If you slept in the upright position, the height is maintained firmly. In addition, in the parallelogram link disclosed in the Patent Document 4, the difference in the load capacity between the neck portion and the temporal load is hardly confirmed, and it is necessary to provide the load difference due to the force of the biasing means that biases the pillow. Subtle adjustments need to be made for each user.

Thus, in order to achieve the above object, the pillow of the present invention is a flat substantially rectangular parallelepiped head member and a head member formed of a flexible member having a cavity therein. A pillow having a biasing device installed in the cavity to support the upper part of the cavity (also referred to as the upper part) of the cavity upwards, and the biasing device is a head of a person placed on the head member. The lower link is pivotally connected to the lower link which extends horizontally in front and rear, and the lower link which extends horizontally in front and rear with the front side at the side where the neck is located and the side at which the head part is located at the rear side. The lower link is pivotably connected to the forward link and the rear end of the lower link, the rear link tilted forward, the front end to the upper end of the front link, and the rear end to the middle of the rear link, respectively. A link mechanism comprising an upper link pivotably connected to the upper link, a load supporting link rearward side slidably mounted at an upper end of the rear link, and a front end side pivotably connected to the upper link front end, an upper link and A biasing means for biasing the load supporting link upwards and a regulating means for regulating the inclination of the rear linkage rearward, the link length of the front linkage being longer than the link length of the rear linkage, In the state where the head is not loaded, the product of the sinusoidal inclination of the forward inclination and the link length is greater than twice the front link than the rear link, and the inclination angle forward of the rear link exceeds 0 degrees. 20 degrees or less, and the load-bearing link rises to the highest position by being taxed from the taxing means and supported by the upper end of the rear link. When the front link and the rear link fall to the front in the state where the head of the person is placed on the head member, the load of the biasing means is set so that the load supporting link descends to the lowest position. .

According to the pillow of the present invention, in the state where the head of the person is not placed on the head member, the load supporting link is positioned at the highest position, and the head member is also supported at the load supporting link and positioned at the uppermost position. Then, when the head of the person is placed on the head member positioned at the highest position, the load directed downward by the weight of the head of the person is caught by the load supporting link of the biasing mechanism through the head member. The load supporting link attempts to be displaced to the lower portion by this load, but the load supporting link is to be displaced to the lower portion. You need to resist the forces. Here, since the product of the sinusoidal sine of the forward tilt angle and the link length is twice as large as the rear link, the front side of the rear link and the front link simultaneously exert a downward load on the upper end of the rear link. The rotation moment acting in the direction of bringing down the link forward is at least two times greater than the rotation moment acting in the direction of bringing down the rear link forward. Therefore, the difference occurs depending on the biasing force of the biasing means and the link length of each link, but the load resistance of the rear part of the pillow (the load required for the load supporting link to start displacement in the lower part) is lower than that of the front part. About two times larger Therefore, the load supporting link tends to be displaced downward as the front side of the load acting downward on the head member, and the load supporting link is difficult to displace downward as the rear side.

In addition, if the rear link is inclined vertically or rearward, the rear link tends to fall backward in the reverse direction to the direction in which the front link falls, and the link mechanism may be damaged. Therefore, the inclination angle toward the front of the rear link needs to exceed 0 degrees. On the other hand, if the front link is steeply forward, only a slight load acts on the front part of the head member, and the front link falls forward, which is undesirable. You must lose. Therefore, in consideration of these, it is necessary to make the inclination angle toward the front of the front link within an appropriate range. For that purpose, the inclination angle of the rear link to the front is preferably 20 degrees or less. Therefore, it is preferable that the rear link is in a substantially vertical state in which the inclination angle toward the front exceeds 0 degrees and is inclined to 20 degrees or less.

As described above, the load concentrates on the temporal load when sleeping in the sideward position, but the temporal load is the center of the front and rear directions of the head member, and the same downward load acts on the upper end of the front link and the rear link. By the action of these loads, the front link bends forward, while the rear link is tilted forward and tries to remain approximately vertical. Since the front link and the rear link are connected through the upper link, the front link does not fall forward unless the rear link falls forward. As a result, the front link and the rear link do not fall forward, and the load bearing link maintains the highest position. Therefore, the head member does not lower, but only the wheel by the weight of the head, and maintains the highest position. And this position is stable, not up-down even if the load acting on a head member from a head part changes slightly.

On the other hand, when sleeping in the upright position, the load is concentrated first under the neck, but is the front side of the head member to be necked, and a large downward load acts on the upper end of the front link, and almost the load on the upper end of the rear link. This doesn't work. By the action of these loads, the front link attempts to fall forward with great force, and attempts to overturn the rear link that is connected through the upper link. As a result, the front link and the rear link fall forward, whereby the load bearing link is lowered. Once the load-bearing link descends, the biasing means resists the biasing force and automatically descends to the lowest position. Therefore, the head member is lowered to the lowest position in accordance with the load supporting member. And this position is stable, not up-down even if the load which acts on a head member member from a head part changes slightly.

In addition, the urging means may generate a urging force such that the load supporting link does not lower due to the self-weight of the head member, and does not interfere with the lowering of the load supporting link once the lowering has started. In addition, since the height at the time of going to bed is not adjusted by the taxing force, as in the taxing means in the pillow disclosed in the patent document 4, there may be a gap in the degree of the generated taxing force. Therefore, the management of the taxing force of the taxing means is simplified, and the manufacture of the pillow becomes easy.

Further, since the rear side link is provided with a restricting means for regulating the inclination of the rear link, the front link falls forward and the rear link falls backward, thereby preventing the link mechanism from being damaged.

Further, in a state where the head of a person is not placed on the head member, it is preferable that the upper surface of the load supporting link and the head member be inclined to the front phase.

In this case, when the head is placed on the pillow in an upright position, it is more certain that the neck contacts the pillow earlier than the back of the head. Therefore, at the time of going to bed upward, the load supporting link automatically descends to the lowest position more reliably.

Moreover, it is preferable that the urging means is a tension spring fixed to the part which one end side extended to the front from the rotational connection part of the front link of a load supporting link, and the other end side fixed to the vicinity of the rear end part of a lower link. Do.

In this case, since the one end side of the tension spring is fixed to the part which extended forward from the said rotational connection part, the said extended part falls by the tension force of a tension spring, and the part of the back part from the said rotational connection part is carried out. It acts to injure. And, when sleeping in the upright position, the rear portion rises at the pivotal connection portion due to the load applied to the neck, so that the contact pressure between the load supporting link and the upper end of the rear link is reduced, and the load supporting is performed. The link slides easily, and it becomes easy to descend.

Further, it is preferable that the shock absorbing member is configured to be positioned between the front link and the rear link and the lower link, respectively, when the front link and the rear link fall forward.

In this case, the impact and the audible sound which generate | occur | produce by contacting the front link, the rear link, and the lower link can be suppressed.

1 is an external perspective view of a pillow according to an embodiment of the present invention.
FIG. 2 is a cross-sectional view taken along the line II-II of FIG. 1. FIG.
Fig. 3 is a sectional view taken along the line III-III of Fig. 1.
Fig. 4 is a cross sectional view taken along the line IV-IV in Fig. 2.
5 is a partial fracture top surface of the pillow.
Fig. 6 is a side view of the link mechanism at the time of top riding.
Fig. 7 is a side view of the link mechanism at the time of the lowest descent.
Fig. 8 is a schematic longitudinal sectional view of the pillow at the time of going to bed upward.
Fig. 9 is a schematic cross-sectional view of a pillow at the time of going to bed upward.
Fig. 10 is a schematic longitudinal sectional view of the pillow at the time of going to the side.
Fig. 11 is a schematic cross sectional view of a pillow at the time of going to the side.

Carrying out the invention  Best form for

The pillow which concerns on embodiment of this invention is demonstrated with reference to drawings.

As shown in Figs. 1 to 5, the pillow 1 is disposed at the rear side of the head member 2 and a flat substantially rectangular parallelepiped shape formed of a flexible member having a cavity 2a therein. And the lid member 3 covering the rear of the cavity 2a of the head member 2 and the upper part 2b of the cavity 2a of the head member 2 upwards are urged upwardly. It has the urging apparatus 4 provided in 2a). In addition, in this state, the head on which the head part is located is the rear side, and the side where the neck of the person is located is the front side, with the head of the person placed on the pillow 1. Moreover, the pillow 1 arrange | positions the urging apparatus 4 in the cavity 2a, and the cover outer part 3 was adhere | attached on the rear end of the head member 2, and the whole outer side was made into the outer shell 5 Is covered.

Although the head member 2 is formed of a flexible member, it is comprised from the molded object of the low-elasticity urethane rubber here. Low-elasticity urethane rubber is widely used as a material for pillows because of its low repulsive force and excellent familiarity. However, the head member 2 may be made of a high rebound urethane rubber. As shown in Figs. 1 and 5, the appearance of the head member 2 is in the form of a flat substantially rectangular parallelepiped in which the shape at the time of plane becomes almost rectangular in the horizontal length in the horizontal direction, and as shown in Figs. 2 and 3. The upper surface is inverted and the lower surface of the front is inclined backwards, and each of the phases is formed like a sphere with a large radius of curvature. In addition, the shape of the head member 2 should just be formed in flat substantially rectangular parallelepiped shape, and is not limited to the shape shown, For example, elliptical shape may be sufficient as an upper surface.

The cavity 2a is formed with the back as an opening. The head member 2 has a plurality of vent holes 2c communicating with the cavity 2a and the outside at the center of the upper portion 2b of the cavity 2a, and the cavity 2a is filled with heat. Is prevented. Moreover, the three-dimensional knit fabric 5a (refer FIG. 2-4) is arrange | positioned at the outer shell 5 of the part located above the ventilation hole 2c, and the ventilation from the ventilation hole 2c ( The opening is also acted on the part without the vent hole 2c. Moreover, the up-down speed of the pillow 1 is made suitable by the ventilation amount which the air in the inside of the cavity 2a passes through the ventilation hole 2c.

When the head of the person is placed on the pillow 1, the upper part 2b of the cavity 2a of the head member 2 so as to sense the presence of the urging device 4 disposed in the cavity 2a and to have no sense of discomfort. ) Requires a predetermined thickness or more, for example, a thickness of about 2 cm to about 3 cm. However, if the overall height of the pillow 1 is too high, it is not preferable that sufficient low is not obtained at the time of going to bed upwards. Therefore, the head member 2 makes the thickness of the lower portion 2d of the cavity 2a smaller than the thickness of the upper portion 2b of the cavity 2a. It is preferable to make the thickness of the lower part 2d of this cavity 2a thin, for example about 1 cm. However, when the lower portion 2d of the cavity 2a is made thinner, sufficient strength is not obtained, and in particular, it is easy to tear at the time of molding. Therefore, by coating the fabric 2e on the outer circumference of the formwork for the cavity 2a, the head member 2 is formed, and the fabric 2e is attached to the entire inner surface of the cavity 2a, and the head member ( 2) is reinforced. In addition, by providing the cloth 2e, it is possible to prevent the air leakage and the cavity 2a from excluding the vent hole 2c of the head member 2 from excessively inflating or breaking.

By the way, it is easy to fit the upper surface of the head member 2 of the pillow 1 into a curved surface that fits the uneven curve from the back of the neck of the person to the back of the head when sleeping upward. On the other hand, at the time of going to the side, it is more suitable to make the plane into the flat head part. Therefore, in order to solve such a contradiction, as shown in FIG. 3, the upper surface of the head member 2 is planar, and the upper part 2b of the cavity 2a is formed, and the uneven curved surface extending from the rear of the neck to the back of the head. It is formed so as to be a curved surface inverted up and down. Specifically, the center portion (hereinafter referred to as a front portion of the lower left and right central portions of the cavity 2a upper portion 2b of the head member 2 (hereinafter referred to as an upper lower surface front portion)) 2f. The concavo-convex shape reaching the center of the upper lower surface (2 g) is formed so as to reverse the rear curve shape when viewed from the side from the neck of the person to the larynx. That is, the upper surface of the front lower surface 2f becomes thicker in accordance with the recessed shape of the back of the neck, and the lower surface protrudes downward. The upper surface of the central lower surface 2g becomes thinner in accordance with the protrusion of the posterior head. . As a result, when the urging device 4 becomes very thin and the cavity 2a almost disappears (see Fig. 8) at the time of going to the bed facing upward, the upper surface of the pillow 1 is changed from the back of the neck of the user to the shape of the back of the head. Since the shape is according, the user can sleep without the extra repulsive force from the head member (2).

The lid member 3 is formed of a flexible member similarly to the head member 2, and is formed of a molded body made of low-elasticity urethane rubber. The lid member 3 has a thickness the same as that of the front side portion 2h of the head member 2, and the front end face thereof conforms to the shape of the rear end face of the head member 2, and is short and flat in the front-rear direction. It is formed in substantially rectangular parallelepiped shape. The rear end face of the head member 2 is formed almost vertically, and the front end face of the lid member 3 is aligned with this rear end face with the bias device 4 or the like disposed in the cavity 2a. The cavity 2a is sealed by the cover member 3 by the bonding surface being fixed by adhesive or the like. Since the lid member 3 is located at the rear end of the pillow 1, and no head is placed in the upward direction, even if the adhesive or the like hardens, the user does not sense the presence of the pillow 1, It becomes possible to make height thin.

The urging device 4 is provided with a pair of link mechanisms 6 and 6 which are spaced apart in the lateral direction in the cavity 2a. Each of the link mechanisms 6 also has a lower link 7 extending back and forth horizontally, a front link 8 connected to a lower end by a front end of the lower link 7 so as to be pivotable, and a lower link. (7) the upper link of which the lower end is pivotally connected to the rear end of the rear link 9 and the upper link of the front link 8, and the upper link of which the rear end is pivotally connected to the middle of the rear link 9 ( 10), and the rear portion is configured to be slidably mounted at the upper end of the rear link 9, and the front portion is composed of a load supporting link 11 connected to the front end of the upper link 10 so as to be rotatable. will be. Here, the rear link 9 falls down to a predetermined front to stand in a substantially vertical state, that is, to have an inclination angle β toward the front exceeding 0 degrees and 20 degrees or less, preferably 3 degrees to 15 degrees or less. Consists of. On the other hand, the inclination angle α toward the front of the front link 8 is configured to be larger than the inclination angle β of the front of the rear link 9. More specifically, the product of the sine of the inclination angle α to the front of the front link 8 and the link length of the front link 8 is the sine and the rear of the inclination angle β to the front of the rear link 9. It is comprised so that it may become 2 times or more, preferably 2.5 times or more larger than the product of the link 9 of the link length. And when the load side link 8 is comprised so that the load support link 11 may incline to the front side, the link length of the front side link 8 becomes longer than the link length of the rear side link 9. When the urging device 4 is disposed in the cavity 2a, the load bearing 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 supporting link 11 are each composed of a thin metal plate having the same width, and the lower link 7 and the front link. (8) and each link of the front side link 8 and the load bearing link 11, although not shown in detail, is connected by the hinge mechanism so that rotation is possible. Between the lower link 7 and the rear link 9, the rear side is formed integrally so as to protrude upwards (hereinafter also referred to as an upper portion) from both left and right ends at the rear end of the lower link 7. It is rotatably connected by the pin mechanism using the link installation pieces 7a and 7a. On the other hand, the upper link 10 is completed by spacing a pair of thin and long metal plates over a distance exceeding the width of the lower link 7 or the like. The rear end of the upper link 10 is rotatably connected to the upper link attachment pieces 9a, 9a formed integrally so as to protrude forward from both left and right ends at the middle of the rear link 9 by a pin mechanism. In addition, the front end portion of the upper link 10 is rotatably connected to the upper link installation pieces 11a and 11a formed integrally as protruding downwardly from the left and right ends at the front end portion of the load supporting link 11 by a pin mechanism. It is. Moreover, the load bearing links 11 and 11 are comprised so that it may protrude below the front lower part 2d of the upper lower surface of the head member 2 from the side view, and the height of the whole pillow 1 becomes low. .

The rear link 9 has an active part 9b coated with a low friction material such as polytetrafluoroethylene, at an upper end portion of which the pivotal connection with the upper link 10 extends upward. A load bearing link 11 is placed on 9b). Since the active part 9b is covered with the low friction material, the load support link 11 slides smoothly on the active part 9b in the front-back direction, and the noise which arose at the time of sliding is suppressed. In addition, the active part 9b may be made to round only the upper end part without covering it with a low friction material.

As shown in FIGS. 4 and 5, the left and right lower links 7 and 7 are connected in parallel to each other so as to maintain a predetermined separation distance between the left and right sides by the lower connecting member 12. The lower connection member 12 is composed of an elongated rectangular metal flat plate, which is fixed by welding or the like and extends backward from the rotational connection with the rear links 9 and 9 of both lower links 7 and 7. The parts 7b are connected to each other. The left and right rear links 9 and 9 are connected in parallel to each other so as to maintain a predetermined separation distance between the left and right sides by the intermediate portion connecting member 13. The intermediate part connecting member 13 is composed of an elongated rectangular metal flat plate, which is fixed by welding or the like, and has a rotational connection portion with the lower links 7 and 7 of both rear links 9 and 9 and an upper link ( 10 and 10) are connected to the parts located between the rotational connecting portion. The left and right load supporting links 11 and 11 are connected in parallel with 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 composed of an elongated rectangular metal plate, which is fixed by welding or the like and abuts against the active portion 9b of the rear links 9 and 9 of both load supporting links 11 and 11. In the part, the parts of the rear are connected. In addition, each connecting member 12, 13, and 14 may be formed integrally with each of the links 7, 9, and 11 of both sides, respectively.

As described above, each of the configured link mechanisms 6, as shown in Figs. 2, 3, and 6, is liable to fall to the front side with the lower link 7 which receives the entire load and the small load downwards. The front link 8, which is inclined largely forward, the rear link 9 which stands up almost vertically inclined at the front, and the front link 8 and the rear link 9 so as to be able to withstand a large downward load. The upper link 10 which connects is provided, and each of these links 7, 8, 9, and 10 is rotatably connected, and comprises the substantially rectangular link. However, the amount of movement when the front link 8 with a large inclination angle β is inclined and the vertical rear almost vertical rear link 9 inclined forward is different. Therefore, when the upper rotation part of the rear link 9 and the upper rotation part of the front link 8 are connected to the upper link 10 in accordance with the front link 8 with a small amount of movement, the upper link 10 is large. When the upper link 10 becomes the link supporting the cavity 2a upper part 2b of the head member 2 in the state of falling back, the non-compliance which the inclined upper surface of the pillow 1 greatly inclines is Occurs. Therefore, in the link mechanism 6 of the main needle 1, the back link 9 is connected to the upper link 10 so that the supporting link does not fall back greatly and is thinned at the lowest. The load supporting link 11 is mounted on the front end of the upper link 10 in such a manner that the load supporting link 11 extends further upwards than the rotational connection portion of the upper and lower portions of the moving portion 9b. It is connected to the department rotatably. By configuring the link mechanism 6 in this way, the link supporting the cavity 2a upper part 2b of the head member 2 becomes the load supporting link 11, and the slope is approached horizontally and arbitrarily set. It becomes possible.

The urging device 4 is a tension spring 15, 15 as a urging means for urging the upper links 10, 10 and the load supporting links 11, 11 to be pushed upwards, as shown in Figs. Equipped) Each tension spring 15 has its one end side fixed to the rear outer side at the rotational connection portion with the rear link 9 of the lower link 7, and the other end side is rotated with the front link 8 of the load supporting link 11. It is installed by being fixed to the front outer side at the connection part. Here, the hook of the one end side of the tension spring 15 is caught by the hole of the spring mounting piece 7c integrally formed so as to protrude upwards at the left and right outer end parts of the extension part 7b of the lower link 7. . And the hook on the other end side of the tension spring 15 protrudes downward from the extension part 11b extended forward from the rotational connection part with the front side link 8 of the load support link 11 to the outer left-right direction. It is caught by the hole of the spring mounting piece 11c integrally formed. In this way, the tension spring 15 pushes the load supporting link 11 upwards, and forces the front link 8 to rise.

In addition, since the front end of the tension spring 15 is fixed to the extension part 11b which protrudes forward from the said rotation connection part, the extension part 11b by the biasing force of the tension spring 15 is carried out. ) Is lowered, and the main body portion at the rear side of the pivotal connection portion acts to float. As a result, the contact pressure with the active part 9b becomes small in the load support link 11, and it becomes easy to slide on the active part 9b.

The urging device 4 is provided with stoppers 16 and 16 as regulating means for regulating the inclination of the rear links 9 and 9 to the rear. Each stopper 16 is provided near the rotational connection part with the rear link 9 of the lower link 7. Here, the stopper 16 is bent by bending inward the tip portion projecting upward from the rear part of the rear link attachment piece 7a for pivotal connection with the rear link 9 of the lower link 7. However, the stopper may be provided behind the load supporting link 11. When the rear link 9 abuts on the folded front face 7d, it is regulated that the rear link 9 is inclined backward from an almost vertical state inclined forward. When the rear link 9 is inclined to the rear side, the stopper 16 prevents this because the link mechanism 6 may easily fall over and fall behind the front link 8. .

The biasing device 4 absorbs the shock generated by the collapse of the front link 8 and 8 and the rear link 9 and 9 when the load supporting links 11 and 11 are lowered, thereby preventing the occurrence of impact sound. Shock-absorbing blocks 17 and 17 are provided as shock-absorbing members to suppress. The shock absorbing blocks 17 and 17 are formed of a flexible member, but are formed of a molded body made of a low-elasticity urethane rubber. The shock absorbing blocks 17 and 17 are here positioned so as to be located between each of these links 8 and 9 and the lower link 7 when the front link 8 and the rear link 9 fall down. And fixed to the upper surface of the lower link 7 by adhesion or the like. The shock absorbing block 17 for the front link 8 is provided on the upper surface of the extension portion 7e that extends forward from the pivotal connection portion with the front link 8 of the lower link 7. The shock absorbing blocks 17 and 17 may be fixed to the lower surface of the front link 8 or the rear link 9 by adhesion or the like. The position of the load bearing link 11 at this time when the front link 8 and the rear link 9 fall, and each of these links 8 and 9 bends the shock absorbing blocks 17 and 17 to a minimum thickness. Becomes the lowest position. In addition, since the bending shock absorbing blocks 17 and 17 have a restoring force, a deflection force is applied to displace the front link 8 and the rear link 9 upward, and the upper part of the tension springs 15 and 15 is provided. Assistance in the taxation of. As the shock absorbing blocks 17 and 17, spring members such as coil springs and leaf springs may be used.

In addition, the lowering device 4 is equipped with a lower plate 18, an upper plate 19, a mesh cloth 20, a sponge member 21, and a flexible sheet 22. The lower plate 18 is composed of a hard resin plate made of PET (polyethylene terephthalate) or the like, and is formed in a substantially rectangular shape almost the same as the lower surface of the cavity 2a, and is placed on the front portion and the lower portion of the head placed on the upper surface of the pillow 1. It is formed in the shape which cut | disconnected the center part located, ie, the abbreviation U shape which the front opened. The lower plate 18 is fixed to a lower surface of both the lower links 7 and 7 and the lower connecting member 12 by a rivet or the like not shown. Since the lower plate 18 is placed on the lower surface of the cavity 2a, it is possible to arrange the urging device 4 at a predetermined position in the cavity 2a. As such, since the lower links 7 and 7, which are thin metal members, and the lower surfaces of the lower connecting members 12 are covered by the lower plate 18, the user senses the presence of the metallic member from the lower part of the pillow 1. There is no discomfort.

The upper plate 19 is composed of a hard resin plate made of PET or the like, and covers the upper surfaces of both the load supporting links 11 and 11 and the upper connecting member 14, and the front and center portions are cut out similarly to the lower plate 18. Thus, the abbreviation U is formed. The upper plate 19 is fixed to the upper surfaces of both the load supporting links 11 and 11 and the upper connecting member 14 by a rivet or the like not shown. In this way, since the upper surfaces of the load supporting links 11 and 11 and the upper connecting member 14, which are thin metal members, are covered with the upper plate 19, the user can observe the presence of the metallic member from the top of the pillow 1. There is no sense of incongruity.

The mesh fabric 20 is pulled with a moderate force on the upper plate 19 so as to replenish the cut front and center portions, and supports the head at the time of going to the side to prevent a large stagnation of the head. In addition, as mentioned above, although the front lower part 2d of the upper lower surface of the head member 2 protrudes downward, it is preferable to match this protrusion position to the position which hit the mesh cloth 20 under the center part. In this case, in order to lower the height of the pillow 1 at the time of the lowest descent, even if the mesh cloth 20 is pulled loose, the entire center of the flat surface of the upper surface of the pillow 1 when not in use is not concave. A pillow 1 of a shape can be obtained.

The sponge member 21 is formed of high-repulsion urethane rubber as a flexible member, and is provided to be located on the uppermost surface of the urging device 4, so that the head member 2 is sufficiently smooth and to some extent the upper portion of the cavity 2a. Even if (2b) is made thin, the user does not feel the hardness of the upper plate 19 from the upper surface of the pillow 1. In addition, the sponge member 21 is provided with the ventilation hole which communicates with the ventilation hole 2c of the head member 2.

The flexible sheet 22 is formed of a single soft resin sheet made of urethane or the like, and is disposed between the upper surface of the front part of both load-bearing links 11 and 11 and the lower surface of the front part of the lower and lower links 7 and 7. I'm pulling from side to side. The flexible sheet 22 reinforces the front part of the mesh cloth 20 and forms an arc shape that protrudes on the front surface, and the texture of the pillow 1 corresponding to the shoulder of the user at the time of sleeping toward the side Is improving.

The pillow 1 constructed as described above is urged to lift the load supporting links 11 and 11 by the force (tensile force) of the tension springs 15 and 15 when not in use. And, since the back part is supported by the active part 9b of the upper end of the rear links 9 and 9, and the first start of the rear links 9 and 9 is prescribed | regulated, The upper surface of the pillow 1 eventually comes to the highest position. As for the height of the pillow 1 at this time, 16 cm is suitable for 8 cm, for example.

By the way, in the pillow which automatically moves up and down, it was a big subject to obtain appropriate low enough at the time of going to bed when the upper surface is descending. Therefore, the urging apparatus 4 which is provided in the inside of the pillow 1 and performs up-and-down movement is preferable so that height may become low and thin at the time of lowest descent. The distance between the back of the head and the quilt when a person slept in an upright position ranges from 2 cm to 5 cm, depending on the individual difference. Therefore, although it is supported by flexible materials, such as the mesh cloth 20, when both the right and left sides when the taxon apparatus 4 descend | falls are high, if it does not hit the parent mesh cloth 20 considerably loosely in between, it is 2 cm You can't get low enough. However, if it is loosened, the head is excessively stagnated and causes discomfort when it rises and goes to the side. This can be solved by striking the mesh cloth 10, but for this purpose, it is preferable that the height of the biasing device 4 is 1 cm or less at the time of the lowest descent.

Thus, the urging device 4 of the main needle 1 has an upper link 10 when the front link 8 and 8 and the rear link 9 and 9 fall, and the load supporting links 11 and 11 fall. As described above, the other links 7, 8, 9, and 11 are provided so as to be located in pairs on both sides in the width direction so as to sandwich the other links 7, 8, 9, and 11. Therefore, the upper link 10 does not interfere with the other links 7, 8, 9, and 11 so that the biasing device 4 becomes very thin.

In addition, the greater the difference in the load resistance between the front portion 1a of the pillow 1 on which the neck is placed and the central portion 1b on which the temporal portion is placed, the smoother lowering at the time of going to bed and the side It is preferable to maintain the height at the time of going to bed and to not depend on individual differences such as body shape and head weight. As a result of experiment, in order not to depend on individual difference, it is preferable that the load capacity of the front part 1a is 4 kg, and the load capacity of the rear part 1b is 2 times or more, ie, 8 kg or more of the front part 1a. It turned out. The load of each of these parts is that the product of the sine of the inclination angle α of the front link 8 and 8 and the link length is the difference between the sinusoid of the inclination angle β of the rear link 9 and 9 and the link length. It can be obtained easily by making the tension spring 15, 15 urging upward more than twice as much as the product, using moderate force. Thus, the inclination angle α of the front links 8 and 8, the link length, the inclination angle β of the rear links 9 and 9, the link length and the tension spring 15 so that the load-bearing loads of the portions 1a and 1b become the loads. By setting the force of 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15 The urging device 4 which ensures that the urging device 4 maintains the highest position when the lower body smoothly descends to the lowermost position and the heavy body of the head slept in a sideward position with a large body shape. You can get it. For this reason, since a manufacturer does not need the adjustment mechanism inside the pillow 1, it can mass-produce inexpensively and inexpensively. In addition, when the pillow 1 and the biasing means 4 smoothly rise and fall, it means ascending and descending at an appropriate speed that does not disturb the user's sleep without having a low repulsive force and accompanied by a sudden speed change. .

In this way, the pillow 1 can attain a sufficient height at the time of going to the side and at the same time, it is possible to automatically obtain a sufficiently low low appropriately at the time of going to the top, and in particular to have a low physical ability I can solve the trouble about (中 高年) pillow. In addition, similar to the size selection of the shirt and shoes, the user selects an appropriate pillow 1 from a combination of height (highest position) and low (lowest position) prepared in advance, thereby making cumbersome adjustment work. Without performing it, a pillow suitable for both upward and sideward sleeping can be used. In addition, by preparing nine types of pillows combining three types of heights and three types of lows, it becomes possible to provide a pillow suitable for a person of almost any physique or head weight. Here, the height can be changed by changing the link lengths of the front links 8 and 8, the rear links 9 and 9 and the upper links 10 and 10, for example. On the other hand, the change of low changes the thickness of the lower part 2d of the cavity 2a of the head member 2, for example, which provides a bulk member on the lower surface of the pillow 1. And the thickness of the shock absorbing blocks 17 and 17 can be changed.

Next, the operation of the pillow 1 when the head is placed on the upper surface of the pillow 1 in order to sleep in the upward position will be described. In general, when a person sleeps in an upright position, the neck is instinctively pulled to protect an important head, and the back of the head is lifted to contact the pillow 1 at the end. As a result, the back contacts the futon first, and then contacts the pillow 1 in the order of the lower and lower heads. As shown in FIG. 2 and the like, the pillow 1 is positioned at a position 2 cm to 4 cm higher than the front part 1a to which the lower and lower parts abut. Therefore, when sleeping in the upright position, the neck part is first loaded on the front side portion 1a of the head material 2, and then the back head is loaded on the central part 1 b of the head material 2. And the upper surface of the pillow 1 and the load support links 11 and 11 are inclined to the front side, and the front part of the front support part of the load support links 11 and 11, especially the rotational connection part with the front link 8 and 8, A large load is applied to the extension portion 11c from the neck portion, and the load supporting links 11 and 11 have a feeling that the rear portion is floating around the pivot connecting portion. As a result, the load bearing links 11 and 11 become smaller in contact pressure with the active portion 9b of the rear links 9 and 9, making sliding easier, and the rear links 9 and 9 standing substantially vertically. It becomes easy to fall forward. At this time, the product of the sine of the inclination angle α to the front of the front link 8 and 8 and the link length is the difference between the sinusoid of the inclination angle β to the front of the rear link 9 and 9 and the link length. Since it is twice as large as the product, a large previous moment of rotation acts on the front links 8 and 8. Therefore, the front links 8 and 8 are more likely to fall forward. As a result, since the load supporting links 11 and 11 are easy to descend, and the upper surface of the head member 2 is easy to sink, the pillow 1 carrying the head part in the upward facing position smoothly sinks.

In addition, when the front links 8 and 8 fall forward, the tensile force of the tension springs 15 and 15 acts as a repulsive force against this. However, the tension springs 15 and 15 are set so as to generate only a repulsion force that does not interfere with the smooth fall of the front links 8 and 8, so that the head is loaded in the upward position. The pillow 1 does not interfere with stagnation.

When the upper surface of the pillow 1 sinks, the front side links 8 and 8 and the rear side links 9 and 9 abut the ends of the shock absorbing blocks 17 and 17, and thereafter, the shock absorbing blocks. Press (17, 17) to collapse while crushing. Therefore, since the front side links 8 and 8 and the rear side links 9 and 9 do not directly contact the lower links 7 and 7, the audible sound can be suppressed and shown in FIGS. 8 and 9. As described above, each of the links 8 and 9 falls down to the maximum, and the shock generated when the upper surface of the pillow 1 sinks to the lowest position can be suppressed. In addition, the impact-absorbing blocks 17 and 17 that are pressed down generate a restoring force that prevents the respective links 8 and 9 from collapsing as they are pressed down, but the front of the front link 8 or the rear link 9 It is set so that only restoring force does not occur to the extent that it does not interfere with the smooth fall, and it does not prevent the pillow 1 which mounted the head in the upward position to sink to the lowest position.

In addition, 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 through the vent hole 2c. Therefore, by appropriately forming the number and size of the vent holes 2c and setting the amount of air discharge per unit time, the vertical velocity of the upper surface of the pillow 1 becomes appropriate, and the rapid vertical movement can be suppressed. The impact which arises when the upper surface of the pillow 1 sinks in the lowest position can be suppressed. In addition, the cavity 2a repeats expansion and contraction by the vertical movement of the upper surface of the pillow 1, and a large amount of air in the cavity 2a is exhausted from the vent hole 2c, so that the upper part of the pillow 1 is Heat and humidity are reduced, and sleep becomes more comfortable.

In addition, when the head part is slept on the upper surface of the pillow 1, the lower surface of the upper part 2b of the cavity 2a of the head member 2 composed of a molded body made of low-elasticity urethane rubber is caused by the weight of the head part. It stagnates beyond the upper surface of the link mechanisms 6 and 6 which consist of metal members. In addition, the head member and the lower part of the neck portion when viewed from the top, the head member (2), the outer shell (5), the mesh fabric 20, the sponge member 21 and the flexible sheet 22, but these are all It is formed of a soft member, and the hard member does not exist. Therefore, when the head part is slept on the upper surface of the pillow 1, the hard member of the lower part is sensed and there is no unpleasant feeling, and a soft touch can be obtained. In addition, since there is no hard member in the lower part of the head or the neck, a soft texture can be obtained without increasing the thickness of the upper portion 2b of the cavity 2a of the head member 2. In addition, since a soft feel can be obtained without using the thick head member 2 in the upper portion 2b of the cavity 2a, the height of the pillow 1 can be kept low.

Next, the operation of the pillow 1 when the head is placed on the upper surface of the pillow 1 in order to sleep in the side facing position will be described. In general, when a person sleeps in a lateral position, first, the side arm and shoulders are brought into contact with a futon and the weight is received. Then, the head part is placed on the central portion 1b of the pillow 1. As shown in Fig. 10, since the height difference between the head and shoulders is great at the time of going to the side, most of the load of the head part is applied to the center part 1b of the pillow 1, and a part of the load of the head part. Is supported by the shoulder through the neck. Although the upper surface of the pillow 1 is inclined to the front surface, in the side-facing posture, the neck part is concave in the temporal part, so that the front part 1a of the pillow 1 under the neck part having small load resistance is caught. The load is small, and most of the load on the head is caught on the rear links 9 and 9 via the mesh cloth 20 and the load supporting links 11 and 11. Since the rear links 9 and 9 stand upright in an upright position, the previous rotational moment due to the load on the head portion from the upper side is small, so that it is difficult to fall forward. As a result, since the state in which the rear side links 9 and 9 stand upright in the upright position is maintained, the load supporting links 11 and 11 are stably held at the highest position without descending, so when going to bed sideways The height of the pillow 1 is stable, and does not give anxiety to the user. In addition, because of the height of the observation, it is not possible to intentionally apply a load under the neck at the time of going to bed sideways.

Next, the operation | movement of the pillow 1 at the time of turning to the up side at the time of bed reversing to the side is demonstrated. At the time of going to the side, as shown in FIGS. 10 and 11, the load supporting links 11 and 11 are in the highest position. In this state, when the user pulls the shoulder out of the abutment position with the futon and poses upward, as shown in Figs. 8 and 9, the load is supported as in the case of sleeping in the upward orientation described above. The links 11 and 11 sink to the lowest position. In this way, even when the bed is turned upside down and facing up, the load supporting links 11 and 11 are automatically displaced to an appropriate lowermost position at the time of sleeping upwards, so that a comfortable sleep is maintained even afterwards. You can get it.

Next, the operation | movement of the pillow 1 at the time of turning to the side at the time of going back to the side and turning to the side is demonstrated. At the time of sleeping upwards, as shown in Figs. 8 and 9, the load supporting links 11 and 11 are in the lowest position. And from this state, when a user puts his shoulder to the side, the head part is supported by the shoulder at the shoulder part, and the load by the weight of the head part which hangs on the load supporting links 11 and 11 is carried out. It disappears, or becomes very small. At this time, the load supporting links 11 and 11 are automatically displaced upward by the force of the tension springs 15 and 15 and the restoring force of the shock absorbing blocks 17 and 17. 10 and 11, the load supporting links 11 and 11 are displaced to the highest position and automatically stop at the position via the stoppers 16 and 16. As shown in FIG. In this way, even if it is turned to the side from the side to the side to sleep, the load supporting links (11, 11) are automatically stopped and shifted to the appropriate highest position when going to the side to sleep, so even after a comfortable sleep You can get it.

In addition, with respect to the phenomenon in which most people sleep in the side-facing position, when the inverted front and rear of the pillow 1 are used and the rear links 9 and 9 are used so that the lower part of the neck, the head is slightly loaded on the pillow 1. Even if you're sleeping, you'll be able to maintain the proper height for your side-facing position. In this case, the smoothness that the pillow 1 sinks is slightly inferior when sleeping in the upright position, but it does not interfere by becoming a little familiar, and automatically changes to an appropriate low when going to bed upwards.

Claims (4)

A flat substantially rectangular parallelepiped member formed of a flexible member having a cavity therein,
A pillow having a biasing device installed in a cavity so as to bias and support an upper portion of a cavity of a head member upwards,
The biasing device includes a lower link extending horizontally in front and rear, with the front side on the side where the neck is located in the state where the head of the person is placed on the head member, and the rear side on the side where the head part is located. , The lower end is pivotally connected to the front end of the lower link, the front link inclined forward, and the lower part is pivotably connected to the rear end of the lower link, the rear link tilted forward and the upper end of the front link The front end is mounted to the upper link of the rear end of the rear link is pivotally connected to each other, the rear end is slidably mounted to the upper end of the rear link, the front end is pivotally connected to the front end of the upper link A link mechanism consisting of a load bearing link,
A biasing means for biasing the upper link and the load bearing link upwards,
A regulating means for regulating the inclination of the rear link to the rear,
The link length of the front link is longer than the link length of the back link,
In the state where the human head is not placed on the head member, the product of the sine of the forward angle and the link length is greater than twice the front link than the rear link, and the inclination angle of the rear link forward is 0 degrees. Excess 20 degrees or less, and the load supporting link is located at the highest position by being urged by the urging means and being supported by the upper end of the rear link,
A pillow, characterized in that the biasing force of the biasing means is set so that the load-bearing link falls to the lowest position when the front link and the rear link fall forward while the human head is placed on the head member. The pillow according to claim 1, wherein the load bearing link and the upper surface of the head member are inclined in an upper phase in a state where a human head is not placed on the head member. The urging means according to claim 1 or 2, wherein one end side is fixed to a portion extending forward from the rotational connection with the front link of the load-bearing link, and the other end is fixed near the rear end of the lower link. A pillow characterized by being a tension spring. The shock absorbing member according to any one of claims 1 to 3, wherein the shock absorbing member is configured to be positioned between the front link and the rear link and the lower link, respectively, when the front link and the rear link fall forward. Pillow made.

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