KR102173498B1 - Lumbar cushion - Google Patents

Abstract

The present invention relates to a roomba cushion. The roomba cushion includes a cushion body and cushion members. The cushion body is formed to support the user's spine when the user is seated. The cushion members are fitted to each of the fitting grooves of the cushion body at a set interval in the left and right direction of the cushion body on the front surface of the cushion body based on the user's back, and formed to have a plurality of through holes made of a viscoelastic material.

Description

Roomba cushion {Lumbar cushion}

The present invention relates to a cushion that supports the user's waist when the user sits on a chair or the like.

In recent years, the number of users sitting on a chair is increasing, and since the user sits for a long time while driving a vehicle, there is a lot of stress on the back and back, so it is recommended to have a habit of sitting in a correct posture to protect the back and back. To this end, a cushion to support the back of the chair is also used as an auxiliary.

Such a cushion should have properties such as moderate softness, compressibility, vibration absorption, dehumidification, deformation following, and durability so that the user can feel comfortable on the waist even when sitting for a long time. According to the prior art, the cushion is mainly used as an internal filling material such as cotton, sponge, urethane foam, rubber.

For example, a cotton cushion absorbs shock and provides a cushioning feeling to the seated person's waist. The reason is that the fibers that make up the cotton are formed like a net, and air is continuously supplied to the cotton to give it a resilience. However, the cotton cushion needs to use a large amount of cotton to give a good cushioning feeling, and if the cotton cushion is continuously used, the thickness of the cotton cushion becomes thin, so that the cushioning feeling and breathability can be easily deteriorated.

Public Utility Model Publication No. 20-2010-0011743 (released on Dec. 03, 2010)

An object of the present invention is to provide a roomba cushion that enables a user to feel comfortable with a correct spine posture even when sitting for a long time and induce a comfortable sitting.

Roomba cushion according to the present invention for achieving the above object includes a cushion body and cushion members. The cushion body is formed to support the user's spine when the user is seated. The cushion members are fitted to each of the fitting grooves of the cushion body at a set interval in the left and right direction of the cushion body on the front surface of the cushion body based on the user's back, and formed to have a plurality of through holes made of a viscoelastic material.

Here, each of the cushion members is formed by a first cushion portion divided by the first partition walls so that the first through holes are respectively penetrated back and forth in a regular hexagonal cross-section, and the second through holes are formed by second partition walls so that the second through holes are respectively passed back and forth in a regular hexagonal cross-section. Includes a second cushion portion that is formed divided and stacked in front of the first cushion portion so that each center of the second through holes coincides with each center of the first through holes, and reinforcing ribs formed at each boundary portion between the first through hole and the second through hole can do.

In addition, the cushion body may include a plurality of acupressure protrusions arranged vertically in the upper center of the front surface. The cushion body may include a plurality of first ventilation holes formed around the cushion members. A second ventilation hole may be formed in each of the fitting grooves. The roomba cushion may further include a cushion cover covering the cushion body and the cushion members together.

According to the present invention, even if the user sits for a long time, the user can feel comfortable with the correct spine posture, and it is possible to induce comfortable seating by reducing skin irritation due to pressure distribution, providing comfort, and maintaining temperature and humidity according to ventilation. In addition, according to the present invention, it is possible to provide a massage function according to the movement of the lower back while seated.

1 is a perspective view of a roomba cushion according to an embodiment of the present invention.
2 is a side view showing an example of using the roomba cushion shown in FIG. 1.
3 is a perspective view showing the interior of the roomba cushion in FIG. 1.
4 is an exploded perspective view of FIG. 3.
5 is a front view of the cushion member in FIG. 3.
6 is a cross-sectional view taken along line AA of FIG. 5.

The present invention will be described in detail with reference to the accompanying drawings as follows. Here, the same reference numerals are used for the same configuration, and repeated descriptions and detailed descriptions of known functions and configurations that may unnecessarily obscure the subject matter of the present invention will be omitted. Embodiments of the present invention are provided in order to more completely describe the present invention to those of ordinary skill in the art. Accordingly, the shapes and sizes of elements in the drawings may be exaggerated for clearer explanation.

1 is a perspective view of a roomba cushion according to an embodiment of the present invention. 2 is a side view showing an example of using the roomba cushion shown in FIG. 1. 3 is a perspective view showing the interior of the roomba cushion in FIG. 1. 4 is an exploded perspective view of FIG. 3. 5 is a front view of the cushion member in FIG. 3. 6 is a cross-sectional view taken along line A-A of FIG. 5.

1 to 6, the roomba cushion 100 according to an embodiment of the present invention includes a cushion body 110 and a cushion member 120.

The cushion body 110 is formed to support the user's spine when the user is seated. The cushion body 110 holds the spine so that the user can feel comfortable with the correct spine posture even when sitting for a long time. The cushion body 110 may be ergonomically designed to have a shape and size capable of maintaining the spine of an average adult man and woman in an S-shaped line. The cushion body 110 may have a maximum left and right width of 39mm±5mm, a maximum height of 32mm±5mm, and a maximum front and rear thickness of 11mm±5mm. The cushion body 110 may have a flat back surface.

The front surface of the cushion body 110 is formed in a curved shape with a central portion concave to the left and right, so that both sides of the waist may be wrapped and supported. In addition, the front surface of the cushion body 110 may be formed in a curved shape along the front-rear direction to support the spine in an S-shaped line.

The cushion body 110 may include a plurality of acupressure protrusions 111 arranged vertically in the upper center of the front surface. The acupressure protrusions 111 may impart an acupressure effect to the user's waist. The acupressure protrusions 111 may be disposed above the cushion members 120. The acupressure protrusion 111 may protrude from the front surface of the cushion body 110 in the shape of a mountain peak. The acupressure protrusion 111 has a convex curved surface and may have a circular cross section. The acupressure protrusions 111 may be formed in various numbers, sizes, and shapes within the category capable of performing the above-described functions.

The cushion body 110 may include a plurality of first ventilation holes 112 formed around the cushion members 120. The first ventilation holes 112 increase ventilation. The first ventilation hole 112 is formed to penetrate in the front-rear direction. The first ventilation holes 112 may be arranged in two rows on the left and right sides with the acupressure protrusions 111 interposed therebetween. Of course, the first ventilation holes 112 may be arranged with various sizes and numbers in a category capable of maintaining the durability of the cushion body 110. The first ventilation hole 112 may be formed as a regular hexagonal hole, but may also be formed as a circular hole.

Second ventilation holes 113 may be formed in the fitting grooves 110a, respectively. The second ventilation hole 113 is formed to penetrate in the front-rear direction. The second ventilation holes 113 together with the cushion members 120 may increase ventilation. The second ventilation hole 113 may be formed as a regular hexagonal hole, but may also be formed as a circular hole. The second ventilation hole 113 may have the same size as the first ventilation hole 112.

For example, the cushion body 110 may be made of memory foam. Memory foam is a material developed by the National Aeronautics and Space Administration to mitigate the impact of aviators when launching a spacecraft. Since the memory foam has a restoring force to gradually return to its original shape when pressed, the cushion body 110 may appropriately distribute the pressure pressed by the spine by the restoring force of the memory foam. As another example, the cushion body 110 may be made of a latex material, and the pressure pressed by the spine may be appropriately distributed as a whole by the restoring force of the latex.

The cushion members 120 are fitted to each of the fitting grooves 110a of the cushion body 110 with a set interval in the left and right direction of the cushion body 110 on the front surface of the cushion body 110 based on the user's back. do. The cushion members 120 may be arranged left and right close to the lower front side of the cushion body 110 to support the spine. All of the cushion members 120 may have the same size and shape, and correspondingly, the fitting grooves 110a may have the same shape.

The fitting grooves 110a may be formed by being recessed to a predetermined depth in the front surface of the cushion body 110. The cushion body 110 may be connected by protruding a protrusion 114 at a predetermined thickness in the front around each of the fitting grooves 110a. The protrusion 114 may surround the periphery of the fitting grooves 110a in a curved shape.

The bottom surface of the fitting groove 110a may be formed to support the rear portion of the cushion member 120 as a whole. In the fitting groove 110a, the inner walls of the fitting groove 110a may have the same shape as the outer wall of the cushion member 120 to fit the cushion member 120. Accordingly, the cushion member 120 may be stably supported by the rear portion and the outer walls by the fitting groove (110a).

The cushion members 120 are formed of a viscoelastic material to have a plurality of through holes. That is, the cushion member 120 has both viscous and elasticity, and has a through-hole structure. Accordingly, the cushion member 120 can provide optimum comfort by distributing the pressure applied to the spine of the waist during seating so that the skin and microvessels are not pressed with a low critical pressure. In addition, the cushion member 120 effectively emits moisture and sweat with an air pumping effect of a through-hole structure and excellent ventilation for body heat and sweat during seating, thereby maintaining temperature and humidity, thereby inducing comfortable seating.

In addition, the cushion member 120 makes it possible to supplement the cushion body 110. That is, when the cushion body 110 is made of memory foam, the cushion member 120 supplements the cushion body 110 with an emphasis on viscosity to increase the support force and shape retention effect with inherent elasticity, so that the spine has an S-shaped line. Helps to maintain.

When the cushion body 110 is made of latex, the cushion member 120 complements the cushion body 110 with an emphasis on elasticity to reduce the contact area and lower pressure with inherent viscosity, thereby reducing skin irritation at the waist and various body shapes. To be able to respond easily.

Since the cushion member 120 having the above-described structure is not bonded to the fitting groove 110a but is physically fitted, it can be deformed independently of the cushion body 110 to support the user's spine. Therefore, the cushion members 120 may provide a massage function according to the movement of the lower back during seating by providing a sense of difference with the surrounding cushion body 110.

The cushion members 120 may protrude from the fitting groove 110a with a length of 2mm to 8mm based on the maximum front and rear thickness of the cushion body 110 so as to increase the massage effect. The shorter the protruding length of the cushion member 120 is, the lower the massage effect, and the longer the protruding length of the cushion member 120 is, the higher the cushion strength may cause inconvenience.

In addition, the cushion members 120 may be arranged at intervals of 10 mm to 20 mm to increase the massage effect. Here, the spacing between the cushion members 120 may be defined as the shortest distance between adjacent portions of the cushion members 120. If the spacing between the cushion members 120 is too narrow or wide, the degree of imparting a feeling of disparity with the surrounding cushion body 110 may decrease, and the massage effect may be reduced.

Of course, as another example, the front edge of the cushion member 120 is formed to coincide with the front edge of the fitting groove 110a, so that the cushion member 120 may be fitted to the fitting groove 110a without a step difference. In addition, the front and rear thickness of the cushion member 120 may be set equal to the depth of the fitting groove (110a).

Three cushion members 120 may be provided to provide a cushioning feeling through pressure distribution in the center and left and right sides of the spine. The left and right cushion members 120 may be symmetrical with respect to the central cushion member 120. Of course, it is possible that the cushion member 120 is provided in two or four or more.

For example, each cushion member 120 may include a first cushion portion 121, a second cushion portion 122, and reinforcing ribs 123.

The first cushion portion 121 is formed by being partitioned by first partition walls 121b so that the first through holes 121a are respectively passed back and forth in a regular hexagonal cross-section. The first through holes 121a may be arranged in a hexagonal shape.

The thickness of the first partition wall 121b may gradually decrease toward the rear. The first partition wall 121b may have a front end thickness of 1.65 to 1.7 mm, and a rear end thickness of about 1.55 mm to 1.6 mm. Accordingly, since the first through hole 121a gradually expands toward the rear, it is possible to easily take out the molded first cushion part 121 from the mold during injection molding of the first cushion part 121. The strength of the first partition wall 121b may be weakened when the difference between the front end thickness and the rear end thickness is too large.

The second cushion part 122 is formed by being divided by the second partition walls 122b so that the second through holes 122a are respectively passed back and forth in a regular hexagonal cross-section. The second through holes 122a may be arranged in a hexagonal shape.

The thickness of the second partition wall 122b may gradually decrease toward the front. The second partition wall 122b may have a rear end thickness of 1.65 to 1.7 mm, and a front end thickness of approximately 1.5 mm. Accordingly, the second through hole 122a gradually expands toward the front, so that it is possible to easily take out the molded second cushion part 122 from the mold during injection molding of the second cushion part 122. In addition, since the thickness of the front end of the second partition wall 122b is thinner than the thickness of the rear end, an area in contact with the user's spine may be reduced to reduce pressure. The strength of the second partition wall 122b may be weakened if the difference in thickness between the front end and the rear end is too large.

The second cushion part 122 is stacked in front of the first cushion part 121 so that the centers of the second through holes 122a coincide with the centers of the first through holes 121a. The second cushion part 122 may be integrally formed with the first cushion part 121. Therefore, the cushion member 120 has a double honeycomb structure by the second through holes 122a and the first through holes 121a to have breathability and can perform pressure distribution more effectively. .

The sizes of the second through-holes 122a and the first through-holes 121a are minimized within the range in which injection molding is possible, thereby maximizing the pressure distribution effect. For example, the shortest widths of the second through holes 122a and the first through holes 121a are set to 10mm to 12mm, and the maximum depths of the second through holes 122a and the first through holes 121a are 12mm to 14mm Can be set to

The reinforcing ribs 123 are formed at each boundary portion between the second through hole 122a and the first through hole 121a. The reinforcing ribs 123 may be formed around a boundary within the second through hole 122a connected to the first through hole 121a by being molded together during injection molding of the second cushion part 122. As another example, the reinforcing ribs 123 may be formed around a boundary within the first through hole 121a connected to the second through hole 122a by being molded together during injection molding of the first cushion part 121.

The reinforcing rib 123 reinforces the cushion member 120 by supporting the second partition wall 122b and the first partition wall 121b in the vertical direction of the second partition wall 122b and the first partition wall 121b. The reinforcing rib 123 may have a structure in which three straight ribs cross and connect at the center. The six ends of the reinforcing rib 123 may be connected to the six corners at the boundary between the second partition wall 122b and the first partition wall 121b, respectively.

That is, in the reinforcing rib 123, three straight ribs are arranged in a vertical direction to the second partition wall 122b and the first partition wall 121b, respectively. Accordingly, the reinforcing rib 123 may further increase the effect of supporting the second partition wall 122b and the first partition wall 121b in each vertical direction, thereby increasing the durability of the cushion member 120. Each rib width of the reinforcing rib 123 may be set to be larger than each thickness of the second partition wall 122b and the first partition wall 121b. The thickness of the reinforcing rib 123 may be set to 1.5 mm.

The composition of a viscoelastic material used in the manufacture of the cushion member 120 may include a mixture of oil and a copolymer obtained by copolymerizing polystyrene-based polymer and polypropylene. Polystyrene-based polymer has a triblock structure. The polystyrene-based polymer may be styrene-(ethylene/buthylene)-styrene block copolymer (SEBS) or polystyrene-block-poly(ethylene-ethylene/propylene)-block polystyrene (SEEPS). Accordingly, the copolymer obtained by copolymerizing polystyrene-based polymer and polypropylene may be PP-SEBS.

The mixture may include 30 to 40% by weight of a copolymer of polystyrene-based polymer and polypropylene and 60 to 70% by weight of oil. Here, if the content of oil is less than 60% by weight, the hardness (Shore A) increases, so that the effect of suppression dispersion decreases and the shrinkage rate is very large, making it very difficult to eject during injection, and if it exceeds 70% by weight, oil and copolymer It is not easy to mix, so injection is impossible. Even if injection is performed, oil blooming occurs during use, so it is desirable to set the oil content in the above range.

The composition may include 5 to 8 parts by weight of an additive based on 100 parts by weight of a mixture consisting of a copolymer and an oil. Here, if the content of the additive is less than 5 weight, the oil and the copolymer are not mixed and the physical properties may be deteriorated. If it exceeds 8 weight, the hardness increases, so it is preferable to add the additive in the above content range. The additive is to remove oil blooming and improve heat resistance, and may use dry silica or wet silica. Fumed silica may be used as the dry silica.

The composition may further include a heat stabilizer as necessary to prevent deterioration due to heating during molding. Here, the composition may include 0.3 to 0.7 parts by weight of a heat stabilizer based on 100 parts by weight of a mixture consisting of a copolymer and an oil.

The heat stabilizer is composed of an organic phosphite such as triphenyl phosphite, tris-(2,6-dimethylphenyl)phosphite, tris-(mixture of mono- and di-nonylphenyl)phosphite, or dimethylbenzene phosphonate It may be made of phosphonates such as, phosphates such as trimethylphosphate, or a combination thereof.

The composition may include 0.5 to 5.0 parts by weight of a fragrance oil and 0.05 to 10.0 parts by weight of an antimicrobial agent based on 100 parts by weight of a mixture composed of a copolymer and an oil, and may have aromatherapy and antibacterial functions.

When the content of the fragrance oil is less than 0.5 parts by weight, it is difficult to obtain an aromatherapy effect, and when it exceeds 5.0 parts by weight, the physical properties of the composition may be deteriorated. The aromatic oil may be extracted from at least one selected from the group consisting of lavender, grapefruit, eucalyptus, rosemary, peppermint, and Ylang-Ylang.

If the content of the antibacterial agent is less than 0.05 parts by weight, the antibacterial activity value does not reach 2, so it is difficult to exert the antibacterial effect, and if it exceeds 10.0 parts by weight, problems such as bubble generation, decrease in physical properties, non-molding or non-measurement may occur in the manufacturing process. I can. The antimicrobial agent can be an organic antimicrobial agent or an inorganic antimicrobial agent. The organic antimicrobial agent may be zinc bis: 2-pyridinethiol-1-oxide.

Meanwhile, the roomba cushion 100 may further include a cushion cover 130 that wraps and covers the cushion body 110 and the cushion member 120 together. The cushion cover 130 may cover and protect the cushion body 110 and the cushion member 120. The size and shape of the cushion cover 130 may be set so as not to be separated from the state in which the cushion members 120 are inserted into the fitting grooves 110a of the cushion body 110. The cushion cover 130 may be provided with a zipper 131 so as to be easily covered or peeled off the cushion body 110.

The cushion cover 130 may have a front portion and a side portion other than the rear portion made of a mesh fabric in order to maximize breathability. Accordingly, the cushion cover 130 prevents sweat and body fluids that may occur during seating from directly contacting the cushion body 110 and the cushion member 120, and allows air to pass through, thereby providing comfort.

In addition, the cushion cover 130 may be made of a fabric having elasticity and softness so as to help the cushion member 120 to provide optimum pressure distribution. For example, the cushion cover 130 may be made of an elastin mesh fabric.

The cushion cover 130 may be fixed to the back of the chair by the fixing band 132. The fixing band 132 is made of an elastic material such as rubber, and both ends may be fixed to the left and right edges of the cushion cover 130. The fixing band 132 fixes the cushion cover 130 to the backrest of the chair by elastic force while wrapping the backrest of the chair left and right, so that the roomba cushion 100 may be maintained in a state mounted on the backrest of the chair. .

The present invention has been described with reference to one embodiment shown in the accompanying drawings, but this is only illustrative, and those of ordinary skill in the art will understand that various modifications and other equivalent embodiments are possible therefrom. I will be able to. Accordingly, the true scope of protection of the present invention should be determined only by the appended claims.

110..Cushion body
110a..insertion groove
111..Acupressure protrusion
112..1st ventilation hole
113..2nd ventilation hole
120..cushion member
130..cushion cover

Claims (6)

A cushion body formed to support the user's spine when the user is seated; And
Cushion members that are fitted to each of the fitting grooves of the cushion body at a set interval in the left and right direction of the cushion body on the front surface of the cushion body based on the user's back, and formed to have a plurality of through holes made of a viscoelastic material; Including,
The cushion members,
Three are provided and all have the same size and shape, and the left and right cushion members are symmetrical with respect to the central cushion member, and the fitting grooves have a length of 2mm to 8mm based on the maximum front and rear thickness of the cushion body. It protrudes from and is arranged such that a gap defined as the shortest distance between adjacent parts is 10mm to 20mm;
The cushion body,
Protrusions protruding forward to a certain thickness to surround each periphery of the fitting grooves and connected, a plurality of acupressure protrusions arranged in one row vertically at the upper center of the front surface, and the acupressure protrusions formed around the cushion members And a plurality of first ventilation holes arranged in two rows on the left and right sides;
Roomba cushion, characterized in that a second ventilation hole is formed in each of the fitting grooves. The method of claim 1,
Each of the cushion members,
A first cushion portion partitioned and formed by first partition walls so that the first through holes are respectively penetrated back and forth in a regular hexagonal cross-section;
The second through holes are formed by being partitioned by second partition walls so that each of the second through holes is penetrated back and forth in a regular hexagonal cross-section, and the second through holes are stacked in front of the first cushion part so that the centers of the second through holes coincide with the centers of the first through holes. 2 cushion part; And
Reinforcing ribs formed at each boundary portion between the first through hole and the second through hole;
Roomba cushion comprising a. delete delete delete The method of claim 1,
Rumba cushion, characterized in that it further comprises a cushion cover covering the cushion body and the cushion member together.

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