KR20200011708A - Lumbar cushion - Google Patents

Abstract

The present invention relates to a rumba cushion. Rumba cushion includes a cushion body and cushion members. The cushioning body is formed to support the spine of the user when the user is seated. The cushioning members are fitted to the fitting grooves of the cushioning body at predetermined intervals in the left and right directions of the cushioning body on the front surface of the cushioning body based on the user's back, and are formed to have a plurality of through-holes of viscoelastic material.

Description

Roomba cushion {Lumbar cushion}

The present invention relates to a cushion that supports the waist of a user when the user is seated on a chair or the like.

Recently, the number of users living in a chair is increasing, and because the user is sitting for a long time while driving a vehicle, it is recommended that the user sit in the right posture to protect his back and waist because the back and the waist are often overwhelmed. To this end, a cushion for supporting the lower back of the chair may be used as an aid.

Such a cushion should have proper softness, compressibility, vibration absorption, dehumidification, deformation tracking, and durability so that the user can feel comfortable at the waist even after sitting for a long time. According to the prior art, the cushion mainly uses cotton, sponge, urethane foam, rubber, and the like as internal fillers.

For example, the cotton cushion absorbs the shock and provides the seated person with a cushion on the waist. The reason is that the fibers constituting the cotton are formed like a net, and air is continuously supplied to the cotton to give restoring force. However, the cotton cushion should be used in a large amount of cotton to give a good cushioning feeling, and if you continue to use the cotton cushion, the thickness of the cotton cushion is thinner can be easily reduced cushioning and breathability.

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

Disclosure of the Invention An object of the present invention is to provide a roomba cushion that enables a user to feel comfortable in a proper spine posture even while sitting for a long time, and induces a comfortable seating.

Rumba cushion according to the present invention for achieving the above object includes a cushion body and cushion members. The cushioning body is formed to support the spine of the user when the user is seated. The cushioning members are fitted to the fitting grooves of the cushioning body at predetermined intervals in the left and right directions of the cushioning body on the front surface of the cushioning body on the basis of the user's back, and are formed to have a plurality of holes made of viscoelastic material.

Here, each cushion member is formed by a first cushion portion formed by first partitions such that the first through holes penetrate back and forth through the regular hexagonal cross section, respectively, and second partitions such that the second through holes penetrate back and forth through the regular hexagonal cross section, respectively. A second cushion portion formed in a compartment and stacked in front of the first cushion portion such that each center of the second through holes coincides with each center of the first through holes, and reinforcement ribs formed at each boundary portion between the first and second through holes; can do.

And, the cushioning body may include a plurality of acupressure protrusions arranged up and down in the upper center of the front surface. The cushion body may include a plurality of first vent holes formed around the cushion members. In each of the fitting grooves, second vent holes may be formed. The roomba cushion may further include a cushion cover covering and covering the cushion body and the cushion members together.

According to the present invention, the user can feel comfortable in the right spine posture even while sitting for a long time, while reducing the skin irritation caused by the pressure dispersion to give comfort and maintain the temperature and humidity according to breathability can induce a comfortable sitting. In addition, according to the present invention, it is possible to give a massage function according to the movement of the lower back during sitting.

1 is a perspective view of a roomba cushion according to an exemplary embodiment of the present invention.
FIG. 2 is a side view illustrating an example of the use of the roomba cushion illustrated in FIG. 1.
FIG. 3 is a perspective view illustrating the inside of a room bar cushion in FIG. 1.
4 is an exploded perspective view of FIG. 3.
FIG. 5 is a front view of the cushion member in FIG. 3. FIG.
6 is a cross-sectional view taken along line AA of FIG. 5.

When described in detail with reference to the accompanying drawings for the present invention. Here, the same reference numerals are used for the same components, and repeated descriptions and detailed descriptions of well-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 to more completely explain the present invention to those skilled in the art. Accordingly, the shape and size of elements in the drawings may be exaggerated for clarity.

1 is a perspective view of a roomba cushion according to an exemplary embodiment of the present invention. FIG. 2 is a side view illustrating an example of the use of the roomba cushion illustrated in FIG. 1. FIG. 3 is a perspective view illustrating the inside of a room bar cushion in FIG. 1. 4 is an exploded perspective view of FIG. 3. FIG. 5 is a front view of the cushion member in FIG. 3. FIG. FIG. 6 is a cross-sectional view taken along the line A-A of FIG. 5.

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

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

The front surface of the cushion body 110 is formed in a concave curved shape concave to the center portion left and right can be supported by wrapping both sides of the waist. In addition, the front surface of the cushion body 110 may be formed in a curved shape along the front and rear direction to support the spine with 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. Acupressure protrusions 111 may impart acupressure effect on the waist of the user. Acupressure protrusions 111 may be disposed above the cushion members 120. Acupressure protrusion 111 may protrude in the shape of a mountain peak from the front surface of the cushion body (110). The acupressure protrusion 111 has a vertex curved convex, it may have a circular cross section. The acupressure protrusions 111 may be formed in various numbers, sizes, and shapes in a range capable of performing the above-described functions.

The cushion body 110 may include a plurality of first vent holes 112 formed around the cushion members 120. The first vent holes 112 increase the breathability. The first vent hole 112 penetrates in the front-rear direction. The first vent 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 vent hole 112 may be arranged with various sizes and numbers in a range capable of maintaining the durability of the cushion body 110. The first vent 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 vent hole 113 is formed through the front and rear directions. The second vent holes 113 may increase the breathability together with the cushion members 120. The second vent hole 113 may be formed of a regular hexagonal hole, but may also be formed of a circular hole. The second vent hole 113 may have the same size as the first vent hole 112.

As an example, the cushion body 110 may be formed of a memory foam. Memory Foam is a material developed by NASA to mitigate the impact of astronauts on spacecraft launches. Since the memory foam has a restoring force to gradually return to its original form when pressed, the cushioning body 110 may appropriately distribute the pressure that the spine presses by the restoring force of the memory foam as a whole. As another example, the cushion body 110 is made of a latex material, it is possible to appropriately disperse the pressure that the spine is pressed overall by the restoring force of the latex.

The cushioning members 120 are fitted to the fitting grooves 110a of the cushioning body 110 at predetermined intervals in the left and right directions of the cushioning body 110 on the front surface of the cushioning body 110 based on the user's back. do. Cushion members 120 may be arranged left and right close to the front lower side of the cushion body 110 to support the spine. The cushion members 120 may all be formed in the same size and shape, and the fitting grooves 110a may be formed in the same shape.

The fitting grooves 110a may be formed by recessing the front surface of the cushion body 110 to a predetermined depth. Cushion body 110 may be connected to the protrusion 114 is projected to a predetermined thickness in the front around each of the fitting groove (110a). The protrusion 114 may surround the periphery of the fitting grooves 110a in a curved shape.

The bottom of the fitting groove (110a) may be made in the form of supporting the rear portion of the cushion member 120 as a whole. The fitting groove 110a may have an inner wall of the fitting groove 110a having the same shape as the outer wall of the cushion member 120 to fit the cushion member 120. Therefore, the cushion member 120 may be stably supported by the rear portion and the outer walls of the fitting groove 110a.

The cushion members 120 are formed to have a plurality of through holes made of viscoelastic material. That is, the cushion member 120 has both viscosity and elasticity, and consists of a through structure. Accordingly, the cushion member 120 may provide optimal comfort by dispersing the pressure applied to the vertebral portion of the lower back during seating so as not to press the skin and the microvascular vessel at a low critical pressure. In addition, the cushion member 120 can effectively induce moisture and sweat by releasing moisture and sweat through the air pumping effect and excellent air permeability of the perforated structure of the body heat and sweat during seating, thereby inducing comfortable sitting.

In addition, the cushion member 120 may complement the cushion body 110. That is, when the cushioning body 110 is made of a memory foam, the cushioning member 120 complements the cushioning body 110 in which the viscosity is emphasized, thereby increasing the holding force and shape maintaining effect with inherent elasticity, so that the vertebrae form an S-shaped line. Help maintain

When the cushioning body 110 is made of latex, the cushioning member 120 supplements the cushioning body 110 with emphasis on elasticity, thereby reducing contact area and lowering pressure due to its inherent viscosity, thereby reducing skin irritation at the waist and various body shapes. Make it easy to respond to

Since the cushion member 120 having the above-described structure is physically fitted without being bonded to the fitting groove 110a, the cushion member 120 may be deformed independently of the cushion body 110 to support the user's spine. Accordingly, the cushion members 120 may provide a heterogeneous feeling with the surrounding cushion body 110, thereby giving a massage function according to the movement of the lower back during sitting.

The cushion members 120 may protrude from the fitting grooves 110a with a length of 2 mm to 8 mm based on the maximum front and rear thickness of the cushion body 110 to increase the massage effect. The shorter the protruding length of the cushion member 120, the lower the massage effect, and the longer the protruding length of the cushion member 120, the higher the cushion strength can be inconvenient.

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

Of course, as another example, the front edge of the cushion member 120 is formed to match the front edge of the fitting groove (110a), the cushion member 120 can be fitted to the fitting groove (110a) without stepped. 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 feeling of cushioning through pressure dispersion 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 center cushion member 120. Of course, the cushion member 120 may be provided with 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 part 121 is formed by being partitioned by the first partition walls 121b such that the first through holes 121a penetrate back and forth through the regular hexagonal cross section, respectively. The first through holes 121a may be arranged in a hexagon.

The thickness of the first partition wall 121b may gradually become thinner toward the rear side. The first barrier rib 121b may have a front end thickness of 1.65 mm to 1.7 mm and a rear end thickness of approximately 1.55 mm to 1.6 mm. Therefore, the first through-hole 121a is gradually expanded toward the rear, thereby facilitating take-out of the first cushion portion 121 molded from the mold during injection molding of the first cushion portion 121. The strength of the first partition wall 121b may be weakened if the difference in thickness between the front and rear ends thereof is too large.

The second cushion portion 122 is formed by being partitioned by the second partition walls 122b such that the second through holes 122a penetrate back and forth through the regular hexagonal cross section, respectively. The second through holes 122a may be arranged in a hexagon.

The thickness of the second partition wall 122b may be gradually thinner toward the front. The second barrier rib 122b may have a rear end thickness of 1.65 to 1.7 mm and a front end thickness of approximately 1.5 mm. Therefore, the second through hole 122a gradually expands toward the front, thereby facilitating the extraction of the second cushion portion 122 molded from the mold during injection molding of the second cushion portion 122. In addition, since the thickness of the front end is thinner than the thickness of the rear end, the second partition 122b may reduce the area of contact with the spine of the user, thereby reducing the pressure. The strength of the second partition wall 122b may be weakened if the difference between the thickness of 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 each center of the second through holes 122a coincides with each center of the first through holes 121a. The second cushion part 122 may be integrally formed with the first cushion part 121. Accordingly, the cushion member 120 may have a double honeycomb structure by the second through holes 122a and the first through holes 121a to have a breathability and more effectively distribute pressure. .

The sizes of the second through holes 122a and the first through holes 121a may be minimized in a range capable of injection molding, thereby maximizing the pressure dispersion effect. For example, the shortest widths of the second through holes 122a and the first through holes 121a are set to 10 mm to 12 mm, and the maximum depths of the second through holes 122 a and the first through holes 121 a to 12 mm to 14 mm. It can be set to.

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

The reinforcing rib 123 supports the second partition 122b and the first partition 121b in the vertical direction of the second partition 122b and the first partition 121b to reinforce the cushion member 120. The reinforcing rib 123 may have a structure in which three straight ribs are connected to each other at the center. Six ends of the reinforcing rib 123 may be connected to six corners at the boundary between the second partition wall 122b and the first partition wall 121b.

That is, the reinforcing rib 123 has three straight ribs arranged side by side in the vertical direction to the second partition 122b and the first partition 121b, respectively. Therefore, the reinforcing rib 123 may increase the durability of the cushion member 120 by further increasing the effect of supporting the second partition 122b and the first partition 121b in the vertical direction. Each rib width of the reinforcing rib 123 may be set 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 the viscoelastic material used in the manufacture of the cushion member 120 may include a mixture of a polystyrene-based polymer and a copolymer of polypropylene and an oil. Polystyrene-based polymers have 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 (SEEEPS). Therefore, the copolymer copolymerized with the polystyrene-based polymer and the polypropylene may be PP-SEBS.

The mixture may include 30 to 40% by weight of the copolymer copolymerized with the polystyrene-based polymer and polypropylene and 60 to 70% by weight of the oil. Here, when the oil content is less than 60% by weight, the hardness (Shore A) is increased, so that the effect of suppression dispersion is reduced and the shrinkage rate is very large, so that ejecting is very difficult during injection. Injection is not possible because it is not easy to mix, and even if it is injection, it is preferable to set the oil content in the above range because oil blooming occurs during use.

The composition may comprise 5 to 8 parts by weight of an additive based on 100 parts by weight of the mixture of the copolymer and the oil. In this case, when the content of the additive is used less than 5 weight, the oil and the copolymer may not be mixed, and thus the physical properties may be lowered. The additive is to remove oil blooming and to improve heat resistance, and dry silica or wet silica may be used. Fumed Silica may be used as the dry silica.

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

The heat stabilizer consists of organic phosphites such as triphenyl phosphite, tris- (2,6-dimethylphenyl) phosphite, tris- (mixture of mono- and di-nonylphenyl) phosphites, or dimethylbenzene phosphonate It may consist of phosphonates such as, or of phosphates such as trimethyl phosphate, or a combination thereof.

The composition may have aromatherapy and antimicrobial functions, including 0.5 to 5.0 parts by weight of fragrance oil and 0.05 to 10.0 parts by weight of antimicrobial agent, relative to 100 parts by weight of the mixture of the copolymer and the oil.

When the content of the fragrance oil is less than 0.5 parts by weight, it is difficult to obtain the aromatherapy effect, and when it exceeds 5.0 parts by weight, the physical properties of the composition may be lowered. The fragrance 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 antimicrobial agent is less than 0.05 part by weight, the antimicrobial activity value is less than 2, which makes it difficult to exert the antimicrobial effect. Can be. The antimicrobial agent may be an organic or 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 which covers the cushion body 110 and the cushion members 120 and covers them 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 that the cushion members 120 are not separated from the fitted state in the fitting grooves 110a of the cushioning body 110. The cushion cover 130 may include a zipper 131 so that the cushion cover 130 can be easily covered or peeled off from the cushion body 110.

The cushion cover 130 may be made of a mesh fabric in the front portion and the side portion except for the rear portion in order to maximize breathability. Therefore, the cushion cover 130 prevents the sweat and body fluids that may occur during seating from directly contacting the cushioning body 110 and the cushioning members 120, and may provide air comfort.

In addition, the cushion cover 130 may be made of a fabric having elasticity and softness to help the cushion members 120 to provide optimum pressure dispersion. For example, the cushion cover 130 may be made of elastin mesh fabric or the like.

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 left and right edges of the cushion cover 130. The fixing band 132 may fix the cushion cover 130 to the back of the chair by the elastic force while wrapping the back of the chair from side to side, so that the room bar cushion 100 may be maintained in a state of being mounted on the back of the chair. .

Although the present invention has been described with reference to one embodiment shown in the accompanying drawings, this is merely exemplary, and it will be understood by those skilled in the art that various modifications and equivalent other embodiments are possible therefrom. Could be. Accordingly, the true scope of protection of the invention should be defined only by the appended claims.

110. Cushion Body
110a..fitting groove
111.Acupressure projections
112..1st ventilation hole
113..2nd ventilation hole
120. Cushion member
130. Cushion Cover

Claims (6)

A cushioning body configured to support the spine of the user when the user is seated; And
Cushion members are fitted to each of the fitting grooves of the cushion body at a predetermined interval in the left and right directions of the cushion body on the front surface of the cushion body on the basis of the user's back, and formed to have a plurality of holes made of viscoelastic material;
Rumba cushion comprising a. The method of claim 1,
Each cushion member,
A first cushioning portion defined by the first partitions such that the first through holes penetrate back and forth through the regular hexagonal cross section;
The second through holes are partitioned and formed by the second partition walls so as to penetrate back and forth through the regular hexagonal cross section, respectively, and the first through the first cushion portion laminated so that the center of each of the second through holes coincide with the respective center of the first through holes 2 cushion portion; And
Reinforcing ribs formed at each boundary portion of the first and second holes;
Rumba cushion comprising a. The method of claim 1,
The cushion body includes a plurality of acupressure protrusions arranged up and down in the upper center of the front surface of the room bar cushion. The method of claim 1,
The cushion body includes a plurality of first vent holes formed around the cushion members. The method of claim 1,
Rumba cushion, characterized in that the fitting grooves are each formed with a second vent hole. The method of claim 1,
Rumba cushion, characterized in that it further comprises a cushion cover for wrapping the cushion body and cushion members together.

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