KR100987961B1 - Chair including headrest - Google Patents

Abstract

The present invention relates to a 'pillow and head restraint' focusing on the head of a person, focusing on the shape of the head and neck so as to rest comfortably for a long time when the person is lying down or leaning on a chair. The function has been improved by improving the function, and standardized as one standardized to be compatible in various aspects .

Sleeping on the wrong pillow or sleeping on the chair while traveling long hours using long distance transportation means (passenger, passenger ship, train, bus, etc.) Everyone could have experienced the experience of being tired, waking up easily and tired.

The core of the present invention 'pillows / headrests' is composed of an ergonomic 'head-shaped fixing groove' made of a combination of hemispherical and semi-cylindrical form of the shape of the human head and neck as it is. Therefore, the curved "C" shaped neckbone (cervical spine) is supported from the bottom so that it does not float in the air, and maintains the angle of the neck naturally, thus inducing the most comfortable posture while inducing a role of severe bending or twisting.

The present invention recognizes the importance of the headrest function and the need for improvement and improves the shape and structure from a completely different perspective. Adopted the 'head-shaped fixing groove' that has not been tried in the shape side, and in the structure side to make a 'space' to install the 'pillow / headrest' of the present invention by modifying the main body of the application object It is easy to separate from and configured for convenient use.

In addition, the standard of the installation space of all the main body of the object and the appearance standard of the pillow / headrest of the present invention for the purpose of multi-purpose use in various fields, so that it can be used interchangeably with all applications Widened range. In addition, according to the object has been added a function that allows you to adjust the height of the sitting height . For applications that do not require retrofitting, this 'pillow / headrest' is used as it is, and the new concept of miniaturization and portability has been introduced to maximize the functions of multi-purpose applications .

Since the present invention aims to be used in various fields using a single 'pillow / headrest', a 'standard type', 'basic type', 'secondary pillow', 'simple pillow', 'pillow pillow /' Although the titles such as 'headrest' and 'headrest' are expressed differently, they all refer to 'head shaped groove shapes' (hereinafter referred to as 'pillows / headrests') of the same standard. Therefore, the object to be applied of the present invention in daily life may be various as follows.

1) 'Need pillow' function used for sleeping on the bed and 'Secondary pillow' function for the purpose of damping

2) 'Simple pillow' function used in camping and outdoor activities

3) A simple pillow function used to flip the front magnets of existing armchairs and cars and to take a rest or sleep (except when the pillow / headrest of the present invention is installed).

4) 'Headrest of passenger chair' function of long distance public transportation such as aircraft, ship, train, bus. (Applicable to both new production and existing chairs in use)

5) 'headrest' function of office chair and armchair

6) passenger car rear head 'headrest' function

7) Auxiliary 'headrest' function of driver's seat and passenger's seat

8) 'headrest' function of the sofa

Key points of the present invention to achieve are as follows.

1) Create a 'head shaped groove' with a 'head shaped groove', an ergonomic shape made of a combination of a hemisphere and a semi-cylindrical shape that mimics the shape of a person's back and neck. It is a concept applied to make head and neck comfortable.

2) It is light and portable. It is small in size for carrying and can be easily compressed and carried in a bag when carrying.

3) The pillow / headrest of the present invention can be standardized and standardized as a single type, and can be used interchangeably in various living fields related to pillows and chairs.

4) It provides a more comfortable condition than conventional chairs by relaxing your head in the narrow space of passenger aircraft, passenger ships, trains and buses. The headrest of the present invention is made through simple modification in the chair installation place by making a square groove in the head of the chair currently used as well as in the new production and inserting a 'subsidiary tray' (injection molding) into the seat. Spheres can be attached and used. The tray insertion method is also one of the important means of achieving standardization of the remodeled chair body insertion groove. Remodeling the existing chairs allows the passengers to use the convenient chairs as soon as possible, further enhancing the convenience of long-distance public transportation at the passenger's entrance, and providing passengers with good service to the passenger transportation company. You will gain the benefit of having It is possible to reduce the waste of resources and costs by using the chair as it is, without discarding it. It is economical to remodel the existing chair without incurring a large cost.

The present invention is to improve the structure and function through a new idea and to achieve the convenience and practicality in daily life by using a multi-purpose and multi-purpose is expected to achieve great results in business.

Ergonomic Headrest, Pillow, Passenger Chair, Seat Height Adjustment, Portable Pillow, Passenger Chair Retrofit, Head Shape Home

Description

Chair with headrest {CHAIR INCLUDING HEADREST}

The present invention relates to a chair which focuses on the improvement of the 'headrest function' in order to give more convenience to daily life through the new combined configuration in the application of ergonomic shapes, proper use of materials, and structure.

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The cervical spine (neckbone), which consists of seven bones located at the neck that connects the head and spine of the human spine, forms a soft C-shaped curve that protrudes from the side and plays an important role in supporting the head. The spinal cord passes by and is considered the most delicate and important part. The cervical spine of the human being is erected in a slightly curved (C-shaped) shape when working in an upright state, but when lying down or leaning on a chair, the cervical spine floats in the air and the muscles supporting the cervical spine relax back and forth. The cervical spine and twist in the left and right directions also come. In addition, due to the protruding shape of the back of the head, the phenomenon occurs to the left and right. When you use the wrong pillow or head restraints that do not consider this phenomenon, you will feel pain and discomfort in the neck and shoulders. In order to solve this problem, it is necessary to use the right pillow when sleeping, and to pursue comfort by using a headrest that functions correctly when using a chair.
When I slept with the wrong pillow, or when I sleep on my chair while traveling for a long time, my neck and shoulders hurt, I can not wake up easily and feel awake and tired because of the wrong posture to relax my neck and muscles Because it causes pain.
When you sleep, your muscles are relaxed, so you won't be able to cover your neck straight. Therefore, if you do not hold the head properly, the neck bones are automatically bent, so only fixing the head naturally can protect the neck bones and make them comfortable. However, currently used products are fundamentally unable to find the solution of the hair fixation. The present invention has been trying to improve the points that have been overlooked in the field of the existing pillows and chairs as follows.
A) pillow
The back of the person's head protrudes round, making it difficult to hold the head comfortably on a flat or hard pillow. Among the existing pillow materials, natural materials such as chaff, buckwheat, millet, etc., are somewhat easy to fix the hair, but the touching part is hard, and if cut for a long time, there is a disadvantage that blood does not penetrate the hair. Synthetic material could not fix the head stably, the head tilted left and right, head angle was turned forward, and the neck and neck were suddenly bent, so as to cause pain in the neck and shoulder. Therefore, to solve this problem, latex foam and memory foam were used to compensate for the shortcomings, but this could not completely solve the problem of head fixation and neck bending.
In order to solve the problems of head fixation and neck bending, it is important to select the material well, but since it is difficult to solve without finding the improvement in the shape of the pillow, the present invention finds an appropriate improvement in the shape and material of the pillow together. I tried to solve the problem.
B) Chair (headrest)
In order to use the chair comfortably, it is common knowledge that the head, back, waist, arms, and legs are touching or supported by ergonomics. While sitting on a chair, you can support your head with your own strength, but while you rest and sleep on your chair, you can't support your head with the muscles in your neck relaxed. Keep your head stationary.
In general, the chair installed in the long-distance public transportation means has not been able to lie down sufficiently because of the narrow space, and has been designed to maintain a comfortable posture by adding various additional devices to the chair. Conventional chairs are not equipped with ergonomic shapes in the area where the head touches, but simply try to prevent head movement by attaching protrusions or pedestals on both sides of the head in a flat state. Therefore, the neck and shoulder still give tension and discomfort without solving the fundamental problems, such as the function of supporting the cervical spine and the effect of neck bending is hardly improved. In other words, instead of solving the fundamental problem from the source of the problem, it is no different from the situation where only the rim rings from the core.

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In order to solve the above problems, an object of the present invention is to provide a practical use and manufacturing method of the 'head shape fixing groove'.
In addition, the present invention has another object to the appropriate selection of the material of the 'headrest' and the selection of the shell material.
Another object of the present invention is to provide a method for adapting, combining, separating, and standardizing an application object.
In addition, another object of the present invention is to provide a height adjustment function of the 'headrest' in the chair.

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In order to achieve the above object, the chair of the present invention
A chair comprising a headrest with a concave surface formed in a foam material on an upper part of a backrest,
The headrest includes a neck support for supporting the neck and a head support for supporting the head,
The concave surface of the neck support is a cylindrical surface corresponding to the shape of the back neck of the person,
The concave surface of the head support is a curved surface corresponding to the shape of the back of the person,
An arc contacting the neck support portion of the arc formed by the cross section of the head support portion orthogonal to the rear surface and the symmetry plane of the head restraint coincides with an arc formed by the cross section of the neck support portion orthogonal to the back surface and the symmetry plane of the head restraint,
The depth of the opposite arc of the neck support, which is formed by the cross section of the head support orthogonal to the backside and the symmetry plane of the headrest, is deeper than the depth of the arc formed by the cross section of the neck support orthogonal to the backside and symmetry plane of the headrest. It is characterized by.
The head support further includes an extension head support opposite the neck support,
The concave surface of the extension head support is a cylindrical surface,
The depth of the arc formed by the cross section of the extension head support orthogonal to the rear face and the symmetry plane of the headrest is deeper than the depth of the arc formed by the cross section of the neck support orthogonal to the back surface and the symmetry plane of the headrest.
An arc contacting the extension head support portion of an arc formed by a cross section of the head support portion orthogonal to the rear surface and the symmetry plane of the headrest coincides with an arc formed by the cross section of the extension head support portion orthogonal to the back surface and the symmetry plane of the headrest support. It is desirable to.
In the chair of the present invention, a tray may be interposed between the headrest and the chair.
In addition, the tray includes a tray rear portion and a tray side portion,
The rear surface of the tray is in contact with the rear surface of the head restraint, both side edges and bottom edges are formed extending in the front direction, the cross section of the formed edge is formed with a coupling groove coupled to the tray side portion,
Preferably, the tray side part is in contact with both side surfaces of the head restraint and the bottom surface of the neck, and is inserted into and fixed to the coupling groove of the tray rear part.
In addition, the tray side portion preferably has a wing portion formed in the opposite edge of the coupling groove extending in the outward direction.
In addition, the chair of the present invention is an auxiliary frame is interposed between the headrest and the chair,
The auxiliary frame may cover a part of the back of the headrest, a part of both sides and a part of the neck bottom.
In addition, the chair of the present invention is formed with a coupling rod for coupling with the chair in the outward direction on the surface facing the neck bottom of the headrest of the auxiliary frame,
A coupling hole into which the coupling rod is fitted is formed on a surface of the chair facing the coupling rod.
It is preferable that a height adjusting member is formed at the coupling rod and the coupling hole inlet.
In addition, the upper back of the chair may be removable.
On the other hand, the chair of the present invention
The backrest of the chair includes a backrest body to which the upper portion of the removable backrest and the removable backrest are coupled,
The upper part of the separate backrest is made of foam, or foam and shell,
The removable backrest upper includes a neck support having a concave surface for supporting the neck and a head support having a concave surface for supporting the head,
The concave surface of the neck support is a cylindrical surface corresponding to the shape of the back neck of the person,
The concave surface of the head support is a curved surface corresponding to the shape of the back of the person,
The arc contacting the neck support portion of the arc formed by the cross section of the head support portion orthogonal to the back surface and the symmetry plane of the backrest coincides with the arc formed by the cross section of the neck support portion orthogonal to the back surface and the symmetry plane of the backrest.
The depth of the opposite side of the neck support portion of the arc formed by the cross section of the head support portion orthogonal to the backside and the symmetry plane of the backrest is deeper than the depth of the arc formed by the cross section of the neck support portion orthogonal to the backside and symmetry plane of the backrest. It is done.
The head support further includes an extension head support opposite the neck support,
The concave surface of the extension head support is a cylindrical surface,
The depth of the arc formed by the cross section of the elongated head support orthogonal to the back and symmetry plane of the backrest is deeper than the depth of the arc formed by the cross section of the neck support orthogonal to the backplane and symmetry plane of the backrest,
Among the arcs formed by the cross section of the head support portion orthogonal to the back surface and the symmetry plane of the backrest, the arc contacting the extension head support portion coincides with the arc formed by the cross section of the extension head support part orthogonal to the back surface and the symmetry plane of the backrest. desirable.
In addition, the foam is preferably selected from the group consisting of latex foam, memory foam, urethane foam and sponge.
In addition, the neck support portion has a depth of 3 to 5 cm of the arc formed by the cross section of the neck support portion orthogonal to the back surface and the symmetry plane of the headrest,
Preferably, the arc of the opposite side of the neck support is 6 to 8 cm in the arc formed by the cross section of the head support orthogonal to the back surface and the symmetry plane of the headrest.
In addition, the neck support portion has a depth of 3 to 5 cm of the arc formed by the cross section of the neck support portion perpendicular to the rear surface and the symmetrical surface of the upper portion of the removable back,
It is preferable that the depth of the opposite arc of the neck support part is 6 to 8 cm among the arcs formed by the cross section of the head support part orthogonal to the rear surface and the symmetry plane of the upper part of the detachable backrest.
The technical solution of the field-specific problem of the 'headrest' of the present invention is as follows.
Practical use and manufacturing method of the 'head shape fixing groove': the appropriate method of the 'foam molding' and 'drilling cutting' methods (the 13th drawing), which are the ergonomic configuration and manufacturing method of the head shape fixing groove, which is the core of the present invention uses
The production of 'head shaped groove'('pillow / headrest') is possible only when the shape of 'head shaped groove' shape is confirmed. The shape of the shape to be determined is the same as the first drawing and the third drawing in the form of combining the 'semi-spherical' (refer to reference numeral 1) of the human head and the 'semi-cylindrical' (refer to reference numeral 2) at the back of the neck. The concept of applying the morphological combination of the “semi-spherical” and “semi-cylindrical” of the “head fixed groove” of the present invention to a pillow and a chair can be considered as a very simple idea like 'the egg of Columbus'. There are no examples of active use for headrests of pillows and chairs.
The reason why such a shape has not yet been made in the pillow field is that in the past, since the contents of the contents of the pillow were natural materials such as chaff, buckwheat and millet, it is impossible to make the shape of the fixed hemispherical body and semi-cylindrical shape. In recent years, the contents of contents such as sponges, latex foams and memory foams have been improved and improved. However, since they were produced by the 'extrusion foam block molding' method, the groove shapes of the 'semi-spherical' and 'semi-cylindrical' of the present invention could not be made. It was not there. Recently, the technical part has been solved to make a sponge, latex foam or memory foam in a 'foamed molding' method, but it does not meet the idea that the shape of the 'head fixed groove' shape as in the present invention should be manufactured. It is not practical yet.
Also, in the chair field, the contents of the chair, the material of the outer shell, and the process of manufacturing the chair were not able to make and use the detailed shapes such as hemispherical shape and semi-cylindrical shape. Even if you make the shape of a 'head groove', you can standardize it according to the size of each person's head for each chair, and it is not easy to adjust the height of the head groove. Would have been impossible. As such, the traditional production method of the chair is called 'head' due to difficult problems such as making the shape of the 'head groove', standardizing the size of the 'home' and limiting mass production, and adjusting the height of the 'groove' according to the sitting height. It can be assumed that even if they wanted to make a shape fixing groove, it was not practical. The driver's seat headrest of the chair and the passenger car attached to the headrest, which is an advanced structure in a separate protrusion form, are also made by applying the shape of the head fixing groove according to the present invention in terms of the purpose of use and the contents of the jacket. It seems that no attempt has been made yet because it was not possible.
The head-shaped fixing groove of the present invention has not been publicly utilized in the field of pillows and chairs in the meantime, and has never been patented by improving the function through the form and coupling structure specifically. Therefore, the present invention is the first concept "combining the hemispherical shape and the semi-cylindrical shape to form a clear shape for the headrest of the pillow and the chair, reconstruct the coupling structure of the object to be applied in a variety of commercially practical and practical applications.
Two methods were adopted in the manufacture of the 'head shape fixing groove'.
The first method is to create 'headrest' using 'latex form''memoryfoam''sponge' material with 'foam molding' method, and 'foam molding' method is a technology developed long ago. I think there will be no difficulty.
The second method is to use the drill tool (figure 14 in Fig. 13) to make a 'head fixed groove' in the 'base molding' (fig. 13) made of 'foam block molding' using the 'drilling cutting' method. . 'Memory Foam''Sponge' (except latex foam is difficult for cutting cutting) Because the material itself is soft, it can be easily cut. Since it is covered with an outer sheath, the shape of the 'head fixing groove' is precisely finished and the surface is clean. You may not be rough. In the case of the memory foam, the material is so soft and stretchy in the hot summer that the cutting edge of the drill tool will not be able to cut properly. The shape and cutting process of the drill cutting tool are shown in FIG. 13. In the work process, the 'base moldings' produced by the 'foam block molding' method are placed on the conveyor belt, 'drilling cutting' in order, and then the cutting process to determine the size and the size of each piece. The headrests can be produced in large quantities. Finally, if the pillow / headrest requires an air hole, a small drill tool can be used to make as many air holes as needed.
Choosing the right material for the pillow / headrest and the right choice of stretchable and soft sheath material to make good use of the shape of the head fixing groove.
Bed pillows or auxiliary, simple pillows
The material of the pillow is latex foam, memory foam and sponge. (The memory foam is sensitive to temperature, so the shape of the 'head fixing groove' and the shape of the pillow can easily be deformed due to the weight of the head.
Sofa . Chair headrest use
The material adopts latex foam and memory foam. (Sponge is excluded because less fit)
The outer shell of the pillow / headrest should be selected with a soft, stretchable fabric to maximize the shape and function of the 'head fixing groove'. The outer shell is not only functional but also important in appearance and material. Incombustible materials (modacryl) should be used selectively to protect against fire. Therefore, KNITTED SPANDEX FLEECE which has smooth surface and elasticity and contains SPANDEX is suitable.
Determination of adaptation method and coupling method of applied object and determination of standardization related to it
Couch pillows
'Basic' (fourth reference number 3) and 'extended' (fourth reference number 4) are constructed in a separate type instead of an integral type with a 'combination type' (fourth drawing) structure. Open the zipper and peel off the outer shell. In addition, the height and size of the 'basic' pillow and the 'extended' pillow are variously changed. It can be produced by adjusting it (in some cases, it is possible to produce 'one type' with 'base type' larger than the standard type without 'extended type' for wider consumer choice). Also, in order to prevent the ear from being pressed while lying on the side, the ear groove (the fourth reference numeral 5) was made to comfort the ear. If the head is uncomfortable at bedtime, the person will often turn over and turn to the side, but when the head is relaxed, he will sleep well for a long time.
-Basic type (No. 4): The main part used when lying in the forward position is the standard type 'pillow / headrest' of the present invention.
-Extended (4th sign 4): When you turn your posture back and forth during bedtime, your head is moved from the 'basic' head home area to the 'extended' area, matching your shoulder height so you can sleep comfortably in both your head and shoulders It becomes possible.
Simple pillows for other purposes, such as campsites and outdoor outings
A standard 'pillow / headrest' (Fig. 3) is supported on the back of the neck and used as it is. ) To adjust the height you want.
Simple pillows in existing vehicles and passenger cars in use
The standard 'pillow / headrest' (drawing 3) is supported on the back of the neck when lying down and taking a rest or sleeping while leaning back the seats of existing armchairs and cars. Depending on the situation, you can use the 'triangle attachment stand' to adjust the height of the pillow.
Chair headrest (Passenger, passenger ship, train, bus, long-distance public transport chair, office chair, armchair)
The chair body is remodeled to use the standard type 'headrest' (5th and 11th drawings). Particularly, this part is an important point of the present invention, and the detailed structure of the chair body is described in the [Details of the Invention] section.
Sofa headrest
The upper head of the sofa body is cut out in the form of an 'L' (6) and is remodeled and used by mounting 'headrests' of various sizes. (See Figure 6 for the form and mounting method.) Attaching the half moon type additional support (Fig. 6, reference numeral 44) allows the headrest to move up and down, thus controlling the height of the head. . In order to better control the direction desired by the user, the 'half moon type additional support' should be rolled along the semicircle using a harder sponge material. In the case of the rear seats of passenger cars, you can also use the 'half-moon additional support'.
Headrest for passenger car rear seat
In the production of passenger car seats, the rear seats are remodeled and used in combination with standard 'headrests' (see Figures 8 and 9 for the shape and combination). Like the sofa, it can also be used as a 'L' shaped body, which can be used as a 'pillow / headrest'.Also, the chair can't be tilted backwards, so a' half moon additional support '(44) is attached. Use it by adjusting the height and direction of 'headrest'.
The overall size of the standard pillow / headrest 'must be standardized for accurate coupling and compatibility with various applications, and the external size will be approximately 26cm ~ 28CM x length 18CM ~ 20CM x height 10CM ~ 12CM. to be.
As can be seen in the first figure, 'a' among the symbols a, b, and c is the 'width' (WIDTH) of the standard pillow / headrest, which is the basis for standardization of all the 'pillows / headrest'. Once determined, it must be determined to be of a uniform size in order to be compatible with the application as an unchangeable part. 'b' is the length of 'pillow / headrest' (LENGTH), which can be changed depending on the application. It will be around 18CM to 20CM. In case of 'drilling cutting', the situation when making 'BASE' The length can be adjusted accordingly. Lastly, 'c' is the height of the 'pillow / headrest', which is to be cut according to the standard determined according to the size of the 'head shape fixing groove' (large, medium and small). For 'bed pillow', the size of the overall appearance can be changed by changing the production process.
Height adjustment function of the 'headrest' suitable for sitting height in the chair.
The height of the 'headrest' should be configured so that it can be adjusted at any time according to a person's sitting height (11th drawing).
Method "A" type (10th drawing)
It is a direct type that can be used to sit on the chair body combined with 'headrest' and adjust the position (height) of the 'head shape fixing groove' at any time according to the user's own sitting height. It is worn and the squeegee / velcro tape (Fig. 10) is attached to both sides of the headrest and the contact of the chair body so that the adjusted position does not change. Alternatively, the body of the chair body insertion groove and the 'headrest' may be used as a material with a squeaking function. Some long distance transit vehicles risk theft of the 'headrest' and can be prevented by attaching a safety strap inside the 'headrest' and the insertion groove. (It is difficult to manage theft in trains and buses, and it is suitable for use in airliners). This method is applied to new production, and when modifying the existing user, follow the procedure of 'inserting auxiliary tray' (Fig. 14).
Type "B" type (drawing 12)
Direct combination of 'headrest' and chair body is simple. This is an indirect insertion method using auxiliary attachments, not an attachment method. BOX type 'auxiliary frame' (Fig. 9) that can be equipped with 'headrest' is made by attaching 'headrest' firmly to 'auxiliary frame'. The material of the 'secondary frame' is made of metal or synthetic resin, and the shape and size of the frame is slightly smaller than the size of the entire head restraint to prevent the hard parts of the frame from touching when people lean on the head. Made to size (12). The insertion rod (8) and the long groove (groove 13) are inserted and combined to allow the adjustment of the height of the 'head shaped groove' while the rod is pulled up or down. This method is applicable only to new productions and is used for chairs of passenger cars or long-distance public transports. It is suitable for use on trains and buses because of the low risk of theft.

A) Convenience: greatly improves the comfort of life.

1) When you sleep on the bed or watch TV (use a pillow or auxiliary pillow)

2) When sleeping at campsites or outdoor outings (carry a 'standard pillow / headrest' on your backpack or separate 'headrest / pillow' from the rear seat of your car and use it as a 'simple pillow')

3) When traveling for a long time using long distance public transportation such as passenger plane, passenger ship, train, bus, etc.

4) Sitting in an office chair in the office to rest and sleep

5) When installed on the back seat of a sofa or a passenger car

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7) When taking a break with the existing passenger car driver's seat or front passenger's chair back (using the 'pillow / headrest' of the present invention on the back of the neck, you can rest and sleep comfortably. HEADREST is not only hard on the surface, but also unsuitable for taking a rest or sleeping).

8) When you want to sleep comfortably in an armchair (use a standard 'pillow / headrest' for the beach or a pillow for the bed)

B) practicality

1) It can be used in various fields through standardization and standardization.

2) Because it is light and compact, it can be carried anywhere and anytime.

The actual volume reduction method for the consumer is to put the 'pillow / headrest' into a plastic bag (clean bag) and press down to apply pressure to reduce the size and to keep the air tight after removing the air. It can be kept in a bag or backpack and can be carried with you.

C) Economics

1) It is economical because it saves resources and costs as it can be used without modifying the chair in use.

2) Its business potential is high due to its many alternative fields of use.

In this section, the key points of the present invention will be described in more detail and in detail.
In order to fix the head naturally, the 'ergonomic shape groove' is to make the head stable in the present invention. In the present invention, the 'head shape fixing groove' is modeled after the shape of a person's back and neck on a 'pillow / headrest'. The key concept is to make deep grooves, to fix and comfortably support the head.
The present invention has attempted to solve the problem by making a deep groove of the ergonomic shape in the part where the head touches in a way that has not been tried in the field of the chair and improving the structure of the chair head (second drawing).
If there is a deep groove in the chair of the present invention may be uncomfortable when sitting, but because of the body structure of the person sitting on the chair to do something or read a book, the person's head is head If you don't have a lot of time to rest and sleep or sleep, you'll naturally rest your head in the groove and get the most comfortable posture.
Improvement focus
Although the concept of the 'head shape fixing groove' of the present invention was a part that was difficult to apply in the past despite being a simple theory, no one is interested and trying to put it to practical use even though it is technically applicable in the pillow and chair field in the present age. Did. In the present invention, focusing on the groove shape of the 'pillow / headrest' to find an improvement point and select the material accordingly, and improved the structure of the object to be used effectively combined.
Concept and Application of Structural Composition
The present invention is to make and use a 'head shape fixing groove' for each application (pillows, chairs, sofas, etc.), the concept and multi-purpose to use the combined 'pillows / headrests' by modifying the application for proper use For the purpose of use, it is easy to carry by increasing the compatibility with the unified coupling and standardization and minimizing the size and weight of the 'pillow / headrest'. As a result, it is possible to provide more comfort in real life because it can be diversified and widely used in various fields beyond the use of limited fields.
It can be applied indoors to couches, sofas, armchairs, and office chairs. Outdoors, it can be applied to aircraft, ships, trains, buses and passenger vehicles, which are long-distance public transport vehicles, as well as to sleep in camp tents or to go out in the open air. Satisfy your needs according to various situations, such as the use of a simple pillow that you can use to sleep for a while.
Technical condition
The present invention focuses on helping to keep the head in the most comfortable state in any environment or situation, and has the following technical conditions.
1) The pillow / headrest of the present invention (the first drawing) is an ergonomic shape ('head fixation groove') that mimics the shape of the back of the head and neck, and can comfort the head and neck for a long time. You can feel the satisfaction while using it.
2) Latex foam, memory foam, and sponge, which are the materials of the pillow / headrest of the present invention, are soft to the touch, lightweight, cushioned, and can clearly make the 'head fixing grooves' (symbols 1 and 2). It is made of materials that can be used for each purpose.
3) 'Pillow / headrest' of the present invention is easy to assemble and separate so that it can be effectively used in the application field, and remodeled by standardizing the uniform size (to be 26 ~ 28cm wide) to one standard Compatible with the body of each application at any time. It is also equipped with a function to adjust the height of the pillow / headrest according to the user's sitting height.
4) The production cost of the pillow / headrest of the present invention may increase somewhat compared to the conventional method, but as a result, it is much more economical than the existing product.
A) Determination and production of 'Head shape fixing groove'
In order to use it appropriately for everyone's head size, the size of the 'head shape fixing groove' is classified into large, medium and small by three groups (size) by applying the standard value found through the 'Head size standard survey'. In the field, infants and children will be produced separately). When producing 'Drilling Cutting' production by dividing the size of 'Head Shaped Groove' into Large, Medium and Small, set the desired size as shown in Fig. 19 and cut it with a cutting knife (18). 'Pillow / Headrest' can be made for each shape fixing groove.
The basic concept of determining the head shape groove is based on the fact that the center of gravity of the human head and neck is in one place, as shown in Figure 19. Based on the same diameter (approximately 20CM for head and 14CM for neck), the head and neck size of each group were determined based on the length of the circumference. The larger head (size 'large', 40) is also thicker and the smaller head (size 'small', 39) is also applied to the head and neck circumference. Accordingly, the size of the 'head shape fixing groove' for each group (size) was decided. Changing the length of the circumference of the circle does not depend on the difference in diameter, but on the position of cutting the circle (see Figures 42 and 43). The increase in the size of the head means that the circumference is larger and the cutting point is closer to the center of the circle. As a result, the cutting position of the 'headrest' is increased, and the height of the 'headrest' is naturally determined for each group (size).
In general, the size of the 'drilling tool' is different depending on the size of the head, but the other way is to use the 'drilling cutting' method to unify the process so that a group can be produced in one process. Bonding inside the mold also in the 'foam forming' method. This is because the combination of separations allows the production of size-specific products in one mold. Of course, in general 'foaming molding' molds can be produced in a separate size for each group (size), and in the 'drilling cutting' can also be made by varying the diameter of the 'drilling tool' for each group (size).
B) Modification and composition of the chair among the objects (passenger plane, passenger ship, train, bus, office chair)
1) Combined
-Cutting finish type: It is possible to produce the chair precisely the space for inserting the 'headrest' and to finish the skin only in case of new production (Fig. 10, 41 and 12). 41)
-TRAY inserting type: It is possible to both produce new chair and recycle existing chair by digging out space for inserting 'headrest' and installing 'supplement tray' (Fig. 14). 'Auxiliary tray' refers to a plastic injection molding in the shape of a tray, which is an auxiliary accessory that serves as a binding bridge between the chair body and the 'headrest'. (See 14th drawing for shape and joining method). Since this field is an important part of the present invention, it will be described in more detail later.
-BODY type: While producing chairs, the head of the chair body (Fig. 17) is made into injection molding (or foam molding), and the space for inserting the 'headrest' is also included (22). In order to maintain the shape firmly, the material is a kind of hard synthetic resin, but the texture is as soft as possible, and in some cases, a special fiber jacket is added to increase the cushioning feeling. It is possible only for the new production of the chair. After adjusting the height of the 'headrest', a protruding part (symbol 23 in Fig. 17) was made for fixing. Combination with the chair body was either a fixed insertion rod (Fig. 17, 32) or a joint coupling method. The height of the head was controlled by moving the headrest up and down like the 'A' type.
2) Direct type: While producing the chair, the material is made of latex foam by directly making the 'head shape fixing groove' by the 'drilling cutting' method or the 'foam molding' method on the head of the chair body (No. 24 in Fig. 18). , Memory foam, sponge. The combination with the chair body is made by adjusting the size in the 'subsidiary accessory frame' method, and it is possible to adjust the height of the sitting height in the 'B' type insertion rod type (33 in Fig. 18).
C) The use of the auxiliary trays (Fig. 14 'Tray Insertion' method) of the remodeling method of the chair body is not only related to the practical use of chair recycling in new production or the existing use of chairs, As an important part to achieve standardization of the modified structure, it is specifically described in terms of application.
1) Concept: Combining the 'headrest' in the remodeling of the main body of passenger aircraft, passenger ships, trains, and bus chairs, a means of long-distance public transportation. Auxiliary tray / TRAY (injection molding, referred to as tray) is designed for easy and neat insertion when inserting into the chair body for mounting. 'Tray' insertion method is a method developed to enable efficient operation in large quantities on the site where the chair is installed (in passenger plane, passenger ship, train, bus), and also can be used by individuals without disposing the existing chair. It is useful also when. The developed method follows the method of cutting out the part where the head of the chair touches, making a certain size of insertion groove, inserting a standardized tray into the groove, and recombining the headrest on the tray. (See Figure 14). In order to be fully compatible with all 'headrests', the insertion grooves of all chairs must be precisely sized and precise. In order to meet these conditions, it is necessary to use the auxiliary tray.
2) Achievement goals: first, perfect combination and compatibility of chair body and 'headrest', second, efficiency of renovation work and clean finish, third, adjustment of depth of tray, and fourth, The chair is fixed to the tray and the fifth is to adjust the height of the 'headrest'.
3) Solution
-The perfect combination and compatibility of the chair body and the 'headrest' can be solved automatically by using the 'tray'.
-Efficiency and clean finish of chair remodeling work (15th drawing)
When making the grooves, the cutouts are not good-looking, so it's inconvenient to finish them by applying different outer skins, but insert a neatly standardized tray (Fig. 14) into the chair insertion groove and fix it. If you finish the outer edge of the cut out area with the tray, you can finish the process simply by reducing the appearance and time and effort.
It takes time and effort to precisely work with each chair when cutting out the insertion head of the 'headrest' from the chair's head (36), but it is simple to secure a space to insert the tray. It doesn't need detailed and precise process, so the work speed is high and efficiency is high. Also, even if the grooves cut by mistake are not exactly the same, it is easy to fix the gap by simply filling up the gap between the gaps and inserting a tray. When creating the home space, stamp the size and position of the tray in the center of the chair's head shell with a stamp (a tool in the form of a painting that can mark the cutting line uniformly for quick work). After cutting), cut the left and right sides and the bottom together with the outer sheath with a chainsaw (38) and cut out the contents of the chair's outer shell without cutting the outer shell of the upper part and make a groove of a certain size (36). . Insert the 'tray' into the groove, and attach the cut outer left and right outer skins of the chair to the edge of the tray (26), and the upper outer shell (25) remains as it is. There is no wing on the upper edge of the rim, so just insert the outer shell into the tray and glue it. The upper part of the tray is not attached to the upper edge of the tray because the inclination and shape of the upper horizontal part (48) cannot be unified. to be. In addition, if the color of the chair is different from the color of the 'tray', the modified shape may not be noticeable and neat.
-Adjustment of the depth (height) of the 'tray' (fifteenth drawing)
Since the size and thickness of the chairs used will be different and the depth of the chair grooves will be different, the depth (height) of the tray should be adjusted accordingly. The present invention devised a way to adjust the depth (height) of the 'tray' to be able to freely apply the 'tray insertion' method to all the chairs without limitation. 'Tray' has rim wing, so it should be divided into bottom part (27) and rim (26 and 28). In the case of the rim part, the molds are assembled to each depth in relation to the depth (height). Combination of the tray can be made, but the range is limited, but in the present invention, the tray of the maximum size of one depth of the 'tray' is made by injection, and cut it to the required depth of the 'tray' After the depth (height) was adjusted, it was combined with the bottom part (symbol 29) for use. The part that is to be cut can be used again as an injection raw material, so no waste of raw materials is generated.
-Fixing device of chair body and 'tray' (No. 30 at drawing 14)
Fixing the 'tray' to the chair body is done before joining the outer surface to the tray and finishes it.
-Height adjustment function of 'headrest'
Since the height of each person is different, it is necessary to adjust the height of the 'headrest'. In order to prevent the headrest's rolling after adjusting the height, the 'headrest' combination method is 'A type'. Protrusions (Fig. 14) are to be made on both sides of the tray.
4) Effect: It is possible to increase the efficiency by reducing the work time and convenience for remodeling work by using 'tray'. In addition, the precision of the combination of the chair body and the head restraint has been improved to improve the quality and utility value of the product, and the compatibility between the chair body and the head restraint can be increased to create many practical values. It can be used continuously after remodeling without discarding existing chairs, which saves resources and reduces costs. Also, the tray's depth adjustment function can reduce mold cost by eliminating the need to manufacture many molds. If you make good use of this 'tray' method, you will be able to continue to use the existing chair anywhere in the world, and the demand will be great. Already remodeled chair has a standardized head groove, Repurchases are also expected to be substantial, which will generate many benefits and profits in business terms.

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1 is a standard perspective view of a multi-purpose 'pillow / headrest' which is a key part of the present invention.

Fig. 2 shows the use side profile of the pillow / headrest in a chair state.

Figure 3 is a front sectional view of the 'head shape fixing groove' which is the original concept of the present invention

4 is a perspective view of the combined pillow

5 is a perspective view of a standard 'pillow / headrest' of the present invention coupled to the chair body

6 is a diagram of the sofa body remodeling form and the mounting state of the standard 'headrest' and the combined state and direction adjustment state of the 'half moon attachment base'

7 is an explanatory view of the height adjustment using the 'triangle attachment base' on the 'pillow / headrest' and the position of attachment of the squeak / velcro tape

8 is a perspective view of the standard 'headrest' coupled to the rear seat of the car

9 is a perspective view of the head of the rear seat is remodeled

10 is an example of the combination of the chair body with the type "A" of the height adjustment function of the head restraint. State of attachment

11 is a perspective view of adjusting the height of the 'headrest' in the chair

FIG. 12 is an example of the combination of the auxiliary frame equipped with the 'headrest' and the chair body and the 'headrest', which is a type "B" type of height adjustment function of the 'headrest'. Drawing of auxiliary frame with mounted state

Figure 13 is a cross-sectional view / plan view and 'drill tool' perspective view of the 'drilling cutting' method of the 'head groove groove' production method

14 is an illustration of the combined progress with the 'headrest', 'secondary tray', chair body

Figure 15 is an illustration of the procedure of the actual chair renovation work using the 'secondary tray' method

Figure 16 is a perspective view of the state combined with the self-separation of the 'supplementary tray'

FIG. 17 is a perspective view of a part of the chair upper body made by injection molding (or foam molding) to make a 'headrest' insertion groove

FIG. 18 is a perspective view of the upper part of the chair manufactured by drilling cutting or foaming to form a 'head shape fixing groove' directly on the chair main body and assembled with the chair main body.

FIG. 19 is a cross-sectional view for explaining the basic concept of creating a 'head shape groove' by a group of 'head shape grooves' (large, medium and small). (Example of 'large' and 'small' size)

＊ Explanation of symbols on main parts of drawing

1. The shape area of the hemispherical shape that mimics the back shape of a person among the head fixing grooves

1-2. Shape area of semi-cylindrical shape instead of head shape hemispherical shape among 'head shape fixing groove'

2. The shape area of the semi-cylindrical shape that mimics the shape of the neck of the head fixing groove.

3. Standard pillow / headrest (head shaped groove)

4. 'Expandable' pillows among some of the pillows

5, ear groove part belonging to 'expandable' pillow of the couch

6. 'L' shaped renovation of the sofa

7. Plain headrest pillows of sofa

8. Joining rod of auxiliary frame

9. Shape of 'Auxiliary frame' (smaller than 'pillow / headrest' size)

10. Modified condition of rear seat for passenger car to insert 'headrest'

11. Attached to the 'headrest' of the squeaker / velcro tape and the insertion groove of the chair body to fix the height.

12. Display the subframe smaller than the size of the 'headrest'

13. Insert groove into which rod of 'auxiliary frame' is inserted

14. Type of 'drilling cutting tool'

15. Side sectional view with 'drilling groove' made by 'drilling cutting' method

16. Base moldings made of 'foaming block molding' as a base required for making 'pillow / headrest' by 'drilling cutting' method. Can be in the BLOCK state, and after cutting the cutting ends

17. Side sectional view of the 'headrest' made by the 'drilling cutting' method

18. Blade tool for cutting pillow / headrest made by 'drilling cutting' to the required size

19. The pillow / headrest opening made by the 'drilling cutting' method is cut and discarded, and the height of the headrest decreases as much as the cutout portion, and the size of the 'head fixed groove' is also reduced. Left part of crop after cutting by size (group) to fit head size

20. Auxiliary Tray

21. A part of the upper body of the chair manufactured by 'injection molding' (or foam molding) method to make 'headrest' insertion space

22. Space made to insert 'headrest' of upper part of chair made by 'injection molding' (or foam molding) method

23, protrusions for fixing after adjusting the height of the 'headrest'

24. Part of the chair upper body made by 'drilling cutting method' or 'foaming' method to directly make the 'head fixing groove' into the chair main body.

25. Outer part that needs to be bonded inside the tray with the chair shell cut while remodeling the chair that is being used by the auxiliary tray method.

26. Area where the outer shell of the auxiliary tray should be bonded

27. Bottom part of 'Accessory Tray'

28. The depth (height) of the tray must be adjusted according to the thickness of the chair to be converted to the frame of the 'accessory tray'.

29. Form and method of joining the underside of the auxiliary tray and the rim.

Since the tray itself has wings, it is inevitable to adjust the 'depth (height)' of the edge only by separating the edge from the bottom and making the injection production. '' The bottom surface is fixed with the chair body and the edge wing and the chair shell are combined so that it is not easily separated.)

30. Screw holes to fix the tray to the chair body

31. Protruding part for fixing after adjusting the height of 'headrest'

32. Combination of the molded part of the upper part of the chair and the chair body

33. It is a bar that is combined with the chair body and has the function of adjusting the position of the 'head shape fixing groove'.

34. 'Triangle Attachment'

35. Squeaker / Velcro tape attached for use in combination with 'triangle attachment base' and 'pillow / headrest'

36. A space where a tray can be inserted into a part cut out by a chainsaw while remodeling an existing chair.

37. Cutting line marking cutouts for ease of renovation

38. Area to join chair envelope cut by chainsaw to 'tray' wing

39. Flat cross-sectional view of the groove shape of the 'small' size among the 'head shape fixing grooves'

40. Flat section of groove shape of 'large' size among 'head shape fixing groove'

41. Modified chair body with square insert slots for pillow / headrest

42. Cutting line to make 'small' 'pillow / headrest' in 'drilling cutting' method

43. Cutting line to make 'large' 'pillow / headrest' in 'drilling cutting' method

44. 'Half-moon attachment stand' on the back seat of sofas and cars

45. Backrest Cushion

46, squeak for joining the 'half moon attachment' (also squeaks in the 'headrest'). In some cases, it is possible to combine the 'half moon attachment' with the 'headrest' and wrap the sheath without a squeak.

47. A perspective view of a frame for joining a chair upper body and a main body separately manufactured as an auxiliary accessory frame. The size and shape are made to fit properly and the height of sitting can be adjusted.
48. The upper body of the chair to be remodeled, each chair having a different shape and inclination.
49. A pillow / headrest with a change in size can be exceptionally larger than the standard type for a wider choice of consumers.

a. Width of pillow / headrest (WIDTH)

b. Length of pillow / headrest (LENGTH)

c. Height of pillow / headrest (HEIGHT)

Claims (17)

delete delete delete delete delete delete A chair comprising a headrest with a concave surface formed in a foam material on an upper part of a backrest, The headrest includes a neck support for supporting the neck and a head support for supporting the head, The concave surface of the neck support is a cylindrical surface corresponding to the shape of the back neck of the person, The concave surface of the head support is a curved surface corresponding to the shape of the back of the person, An arc contacting the neck support portion of the arc formed by the cross section of the head support portion orthogonal to the rear surface and the symmetry plane of the head restraint coincides with an arc formed by the cross section of the neck support portion orthogonal to the back surface and the symmetry plane of the head restraint, Among arcs formed by the cross section of the head support perpendicular to the rear face and the symmetry plane of the head restraint, the depth of the opposite arc not contacting the neck support is formed by the cross section of the neck support part orthogonal to the back face and the symmetry plane of the head restraint. Characterized by being deeper than depth, The head support further comprises an extended head support on the opposite side not in contact with the neck support, The concave surface of the extension head support is a cylindrical surface, The depth of the arc formed by the cross section of the extension head support orthogonal to the rear face and the symmetry plane of the headrest is deeper than the depth of the arc formed by the cross section of the neck support orthogonal to the back surface and the symmetry plane of the headrest.        An arc contacting the extension head support portion of an arc formed by a cross section of the head support portion orthogonal to the rear surface and the symmetry plane of the headrest coincides with an arc formed by the cross section of the extension head support portion orthogonal to the back surface and the symmetry plane of the headrest support. ,        And a tray interposed between the headrest and the chair.        The method of claim 7,        The tray includes a tray rear portion and a tray side portion,        The rear surface of the tray is in contact with the rear surface of the head restraint, both side edges and bottom edges are formed extending in the front direction, the cross section of the formed edge is formed with a coupling groove coupled to the tray side portion, The tray side portion is in contact with both sides and the bottom of the neck of the headrest opening, characterized in that the chair is inserted into a fixed groove in the tray rear portion.        The method according to claim 8,        The tray side portion is characterized in that the chair having a wing portion formed in which the opposite edge of the coupling groove extends outward.        The method of claim 7,        An auxiliary frame is interposed between the headrest and the chair,        The auxiliary frame is a chair, characterized in that surrounding the part of the back of the headrest, a part of both sides and a part of the bottom of the neck.        The method according to claim 10,        A coupling rod for coupling with the chair in an outward direction is formed on the side facing the neck bottom of the headrest of the auxiliary frame,        A coupling hole into which the coupling rod is fitted is formed on a surface of the chair facing the coupling rod.        Chairs, characterized in that the height adjustment member is formed in the coupling rod and the entrance of the coupling hole. delete delete delete delete delete delete

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