TWI717790B - Lumbar cushion - Google Patents

Abstract

The present disclosure provides a lumbar cushion including a cushion body and a plurality of cushion components. The cushion body is configured to support the vertebral of the user when sitting. The cushion components are configured to be based on the resting of the back of the user, and are respectively inserted into insertion holes of the cushion body by a predetermined interval along right direction and left direction of the cushion body on front surface of the cushion body. The cushion components are made by elastic adhesive material and have a plurality of through holes.

Description

Lumbar pad

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

Recently, the number of people sitting for a long time on a chair in daily life is increasing. As users keep sitting for a long time while driving, the back and waist may be overloaded. Therefore, it is recommended to develop good sitting habits to protect the back and waist. Therefore, cushions are also used on the back of the chair to help support the waist.

Such cushions should have appropriate softness, compressibility, vibration absorption, dehumidification, deformation tracking and durability, so that users can feel comfortable even if they sit for a long time. For this reason, the existing cushions mainly use cotton, sponge, polyurethane foam, rubber, etc. as internal filling materials.

For example, cotton cushions provide comfort to the seated person's waist by absorbing impact. The reason is that the fiber structure of cotton forms a net shape, which continuously supplies air to the cotton to generate restoring force. However, the cotton cushion should use a lot of cotton to give a good soothing feeling, and it will become thin after long-term use, and it is easy to reduce the cushioning and breathability.

The purpose of the present invention is to provide a lumbar pad, which allows users to maintain a correct spine posture and feel comfortable even after sitting for a long time, and can also achieve a refreshing sitting feeling.

In order to achieve the above object, the lumbar pad of the present invention includes a cushion body and a plurality of cushion members. The main body of the cushion is formed to support the spine of the user when the user maintains a sitting posture. Each cushion member is based on the user's backrest. The front of the cushion body is inserted into each slot connected to the cushion body with a set interval in the left and right direction of the cushion body, and is formed of a viscoelastic material and has a plurality of Through hole.

Here, each cushion member includes: a first buffer portion formed by partitioning the first partition wall, so that each of the first through holes is penetrated in front and back with a regular hexagonal cross section; the second buffer portion is partitioned and formed by the second partition wall. Make each second through hole penetrate through the front and back in a regular hexagonal cross section, and the second buffer part is stacked in front of the first buffer part so that each center of each second through hole is connected to each center of each first through hole. Consistent; and reinforcing ribs are formed in each boundary area of each of the first through holes and the second through holes.

In addition, the cushion body may include a plurality of acupressure protrusions arranged up and down in the center of the upper side of the front surface. The cushion body may include a plurality of first vent holes formed around each cushion member. Each slot can be respectively formed with a second vent hole. The lumbar cushion may also include a cushion cover that wraps and covers the cushion body and the cushion member.

According to the present invention, the lumbar pad enables the user to maintain the correct spine posture and feel comfortable even if it sits for a long time, and at the same time reduces skin irritation by dispersing the pressure, thereby providing comfort, and maintaining proper temperature and humidity through its breathability, Comfortable seating can be provided. In addition, according to the present invention, a massage function can be provided along with the movement of the waist when sitting.

Hereinafter, the present invention will be described in detail with reference to the drawings. Among them, the same structural elements use the same reference numerals, and detailed descriptions of well-known functions or well-known structures that may unnecessarily obscure the gist of the present invention are omitted. The present invention provides embodiments to enable those of ordinary skill in the art to more fully understand the present invention. Therefore, for clarity, the shapes and sizes of elements in the drawings may be exaggerated.

Fig. 1 is a perspective view of a waist pad according to an embodiment of the present invention. Fig. 2 is a side view of the use case of the lumbar pad shown in Fig. 1. Fig. 3 is a perspective view of the inside of the waist pad of Fig. 1. Fig. 4 is an exploded perspective view of Fig. 3. Fig. 5 is a plan view of the cushion member shown in Fig. 3. Fig. 6 is a cross-sectional view taken along the line A-A in Fig. 5.

1 to 6, a lumbar cushion (100) according to an embodiment of the present invention includes a cushion main body (110) and a plurality of cushion members (120).

The cushion body (110) is formed to support the spine of the user when the user maintains a sitting posture. Since the main body of the cushion (110) supports the spine, the user can maintain a correct spine sitting posture and feel comfortable even if the user sits for a long time. The design of the cushion body (110) accords with ergonomics, and its shape and size can keep the spine of adult men and women in S shape. The maximum left and right width of the main body of the cushion (110) is 39mm±5mm, the maximum height is 32mm±5mm, and the maximum front and back thickness is 11mm±5mm. The cushion body (110) may have a flat back surface.

The front of the cushion body (110) is formed in a shape in which the middle part is concave and curved to the left and right, so that both sides of the waist can be wrapped and supported. In addition, the front surface of the cushion body (110) may be formed in a shape curved in the front-rear direction to support the S-shape of the spine.

The cushion body (110) may include a plurality of acupressure protrusions (111) arranged up and down at the upper central part of the front surface. Each finger pressure protrusion (111) can bring a finger pressure effect to the waist of the user. Each finger pressing protrusion (111) may be arranged on the upper side of each cushion member (120). The finger pressing protrusion (111) may protrude in a mountain shape from the front of the cushion body (110). The apex of the finger pressing protrusion (111) is convexly curved and may have a circular cross section. Within the scope capable of implementing the above-mentioned functions, each acupressure protrusion (111) can be formed in various numbers, sizes, and shapes.

The cushion body (110) may include a plurality of first vent holes (112) formed around each cushion member (120). Each first vent hole (112) is used to improve air permeability. The first vent holes (112) are penetrated back and forth, and acupressure protrusions (111) are arranged in the middle of each first vent hole (112), which are arranged in two rows on the left and right sides. Of course, within the range that the durability of the cushion body (110) can be maintained, the first vent holes (112) may have various sizes and numbers and be arranged together. The first vent hole (112) may be formed as a regular hexagon hole or a round hole.

Each slot (110a) may be respectively formed with a second vent hole (113). The second vent hole (113) penetrates back and forth. Each second vent hole (113) and each cushion member (120) improve air permeability. The second vent hole (113) can be formed as a regular hexagonal hole or a round hole. The size of the second vent hole (113) may be the same as that of the first vent hole (112).

For example, the cushion body (110) may be formed of memory foam. Memory sponge is a material developed by the National Aeronautics and Space Administration of the United States to cushion the impact of astronauts when launching a space shuttle. The memory sponge has a restoring force that can slowly return to its original shape after being applied with pressure, so the cushion body (110) can appropriately distribute the pressure applied by the spine as a whole through the restoring force of the memory sponge. For another example, the cushion body (110) is made of latex material, which can appropriately disperse the pressure applied by the spine as a whole through the restoring force of the latex.

Each cushion member (120) is based on the user's back leaning, and the front of the cushion body (110) is inserted into each slot coupled to the cushion body (110) at a predetermined interval in the left-right direction of the cushion body (110) (110a). The cushion members (120) are arranged left and right near the lower side of the front surface of the cushion body (110), and can support the spine. All cushion members (120) have the same size and shape, and each slot (110a) also has the same shape corresponding to it.

Each slot (110a) can be recessed to a certain depth on the front of the cushion body (110). On the main body (110) of the cushion, a protruding part (114) protruding forward with a certain thickness is connected around the slot (110a). The protruding part (114) may surround each slot (110a) in a curved shape.

The bottom surface of the slot (110a) may be formed in a shape that supports the entire back of the cushion member (120). The shape of the inner wall of the slot (110a) may be the same as the outer wall of the cushion member (120), so that the cushion member (120) can be inserted and coupled to the slot (110a). Thereby, the rear and outer wall of the cushion member (120) can be stably supported by the slot (110a).

Each cushion member (120) is made of viscoelastic material and has a plurality of through holes. That is, the cushion member (120) has viscosity and elasticity, and is formed in a through-hole structure. Therefore, when the user is seated, the cushion member (120) can disperse the pressure applied to the lumbar spine and has a low critical pressure so as not to squeeze the skin and capillaries, thereby providing the best comfort. In addition, for body heat and sweat generated at the waist when sitting, the cushion member (120) can effectively radiate moisture and sweat through the air pump effect of the through-hole structure and excellent air permeability, maintain temperature and humidity, and provide a refreshing sitting feeling.

In addition, the cushion member (120) plays a perfect role in the cushion body (110). That is, when the cushion body (110) is made of memory sponge, the cushion member (120) plays a perfect role in the cushion body (110) with adhesiveness, and improves the effect of maintaining support and shape with inherent elasticity, helping The user's spine remains S-shaped.

When the cushion body (110) is made of latex, the cushion member (120) plays a perfect role in the elastic cushion body (110), reducing the contact area and pressure with inherent viscosity, thereby reducing the impact on the waist skin Stimulating, making it easy to adapt to various body types.

The cushion member (120) of the above structure is not glued to the slot (110a), but physically inserted and combined. Therefore, the cushion member (120) can be deformed independently of the cushion body (110) to support the user's spine. Since each cushion member (120) and the surrounding cushion main body (110) have heterogeneity, it can provide a massage function with the movement of the waist while maintaining a sitting posture.

In order to improve the massage effect, each cushion member (120) protrudes from the slot (110a) to a height of 2mm~8mm based on the maximum front and rear thickness of the cushion body (110). The lower the protrusion height of the cushion member (120), the worse the massage effect; the higher the protrusion height of the cushion member (120), the higher the strength of the cushion, which can bring discomfort to the user.

In addition, in order to improve the massage effect, the arrangement interval between the cushion members (120) may be 10-20 mm. Here, the interval of each cushion member (120) can be defined as the shortest distance between adjacent parts of each cushion member (120). If the interval between the cushion members (120) is too narrow or too wide, the degree of heterogeneity with the surrounding cushion body (110) will be reduced, thereby reducing the massage effect.

Of course, as another example, the front edge of the cushion member (120) may be consistent with the front edge of the slot (110a), so that the cushion member (120) is inserted and coupled to the slot (110a) without a height difference. In addition, the front and back thickness of the cushion member (120) may be the same as the depth of the slot (110a).

There are 3 cushion members (120), which can provide cushioning by dispersing the pressure on the center and left and right sides of the spine. The cushion members (120) on the left and right sides may be symmetrical about the center cushion member (120). Of course, two or more cushion members (120) can also be arranged.

For example, each cushion member (120) may include a first buffer portion (121), a second buffer portion (122), and a reinforcing rib (123).

The first buffer portion (121) is partitioned and formed by each first partition wall (121b), so that each first through hole (121a) penetrates the front and back with a regular hexagonal cross section. Each first through hole (121a) may be arranged in a hexagonal shape.

The thickness of the first partition wall (121b) may tend to gradually become thinner toward the rear. The first partition wall (121b) may be set to have a front end thickness of 1.65mm～1.7mm and a rear end thickness of about 1.55mm～1.6mm. Thereby, the first through hole (121a) gradually expands toward the rear, so that when the first buffer part (121) is injection molded, the molded first buffer part (121) can be easily taken out of the mold. If the thickness difference between the front end and the rear end is too large, the strength of the first partition wall (121b) may become weak.

The second buffer portion (122) is partitioned and formed by each second partition wall (122b), so that each second through hole (122a) penetrates the front and back with a regular hexagonal cross section. Each second through hole (122a) may be arranged in a hexagonal shape.

The thickness of the second partition wall (122b) may gradually become thinner toward the front. The second partition wall (122b) can be set to have a thickness of 1.65mm～1.7mm at the rear end and a thickness of about 1.5mm at the front end. Thereby, the second through hole (122a) gradually expands toward the front, so that when the second buffer part (122) is injection molded, the molded second buffer part (122) can be easily taken out from the mold. In addition, since the thickness of the front end of the second partition wall (122b) is gradually thinner than the thickness of the rear end, the contact area with the spine of the user can be reduced, thereby reducing the pressure. If the thickness difference between the front end and the rear end is too large, the strength of the second partition wall (122b) may become weaker.

The second buffer portion (122) is stacked in front of the first buffer portion (121) so that each center of each second through hole (122a) is consistent with each center of each first through hole (121a). The second buffer portion (122) can be integrally formed with the first buffer portion (121). Therefore, the cushion member (120) adopts a double honeycomb structure through each second through hole (122a) and each first through hole (121a), which not only has air permeability, but also distributes pressure more effectively. By minimizing the size of each second through hole (122a) and the first through hole (121a) within the range of injection molding, the pressure dispersion effect can be maximized. For example, the minimum width of each second through hole (122a) and the first through hole (121a) can be set to 10mm-12mm, respectively, and the maximum depth of each second through hole (122a) and the first through hole (121a) are respectively Set to 12mm～14mm.

Each reinforcing rib (123) may be formed in each boundary area of each second through hole (122a) and the first through hole (121a). The reinforcing ribs (123) may be molded together when the second buffer portion (122) is injection molded, and formed around the boundary in the second through hole (122a) connected to the first through hole (121a). As another example, the reinforcing ribs (123) may be molded together during injection molding of the first buffer portion (121), and formed around the boundary in the first through hole (121a) connected to the second through hole (122a).

The reinforcing rib (123) supports the second partition wall (122b) and the first partition wall (121b) through the vertical direction of the second partition wall (122b) and the first partition wall (121b) to reinforce the cushion member (120). The reinforcing ribs (123) can be formed as a structure in which three in-line ribs are cross-connected at the center. The six ends of the reinforcing rib (123) can be respectively connected to the six corners of the boundary area of the second partition wall (122b) and the first partition wall (121b).

That is, the three in-line ribs of the reinforcing rib (123) are aligned in the vertical direction on the second partition wall (122b) and the first partition wall (121b), respectively. Thereby, the reinforcing rib (123) can further strengthen the effect of supporting the second partition wall (122b) and the first partition wall (121b) in the vertical direction, thereby improving the durability of the cushion member (120). The width of each rib of the reinforcing rib (123) may be greater than the thickness of the second partition wall (122b) and the first partition wall (121b). The thickness of the reinforcing rib (123) can be set to 1.5mm.

The viscoelastic material composition used to prepare the cushion member (120) may include a mixture of polystyrene polymer and polypropylene copolymer and oil. The polystyrene-based polymer is a triblock structure. Polystyrene polymer can be styrene-(ethylene/butylene)-styrene block copolymer (SEBS, styrene-(ethylene/buthylene)-styrene Block Copolymer) or polystyrene-poly(ethylene-ethylene/propylene )-Polystyrene-block-poly(ethylene-ethylene/propylene)-blockpolystyrene (SEEPS). Therefore, the copolymer of polystyrene polymer and polypropylene may be PP-SEBS.

The mixture may contain 30-40% by weight of a copolymer of polystyrene polymer and polypropylene, and 60-70% by weight of oil. At this time, when the oil content is less than 60% by weight, the hardness (Shore A) increases, the effect of controlling dispersion decreases, and the shrinkage rate is large, which makes it difficult to eject during injection. If it exceeds 70% by weight, the oil It is not easy to mix with the copolymer and cannot be injected. Even if the injection is completed, oil spray will occur during use. Therefore, the oil content should be set within the above range.

The composition may be based on 100% by weight of the mixture composed of polymer and oil, and include 5-8% by weight of additives. At this time, if the content of the additive is less than 5% by weight, the oil and the copolymer cannot be mixed and the physical properties are reduced. If it exceeds 8% by weight, the hardness increases. Therefore, the additive should be added in the above content range. Additives are used to remove oil spray and improve heat resistance. Dry silicon dioxide or wet silicon dioxide can be used. Fumed Silica can be used as dry type silica.

The composition may also contain a heat stabilizer as needed to prevent heat generation due to heating during molding. At this time, the composition may contain 0.3 to 0.7% by weight of the heat stabilizer based on 100% by weight of the mixture composed of the copolymer and the oil.

The heat stabilizer can be composed of organic phosphites such as triphenyl phosphite, tris-(2,6-dimethylphenyl) phosphorous acid, tris-(mono- and di-nonylphenyl mixed) phosphites It may be composed of phosphate esters such as phenyl phosphonate dimethyl ester, or phosphate esters such as trimethyl phosphate, or may be composed of a combination thereof.

The composition may be based on 100% by weight of a mixture of copolymer and oil, containing 0.5 to 5.0% by weight of aromatic oil and 0.05 to 10.0% by weight of antibacterial agent, thereby having aroma healing and antibacterial functions.

If the content of aromatic oil is less than 0.5% by weight, the effect of aromatherapy cannot be achieved, and if it is more than 5.0% by weight, the physical properties of the composition are reduced. 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% by weight, the antibacterial activity value is less than 2, and the antibacterial effect cannot be exerted. If it is more than 10.0% by weight, problems such as bubbles, reduced physical properties, inability to shape or incalculable will occur during the preparation process. The antibacterial agent may be an organic antibacterial agent or an inorganic antibacterial agent. The organic antibacterial agent may be zinc pyridinethiol (Zincbis: 2-pyridinethiol-1-oxide).

In addition, the lumbar pad (100) may also include a cushion cover (130) that wraps and covers the cushion body (110) and each cushion member (120). The cushion cover (130) can cover and protect the cushion body (110) and the cushion members (120). The size and shape of the cushion cover (130) can be set such that each cushion member (120) does not deviate from each slot (110a) inserted into the cushion body (110). The cushion cover (130) may include a zipper (131) so that the cushion cover (130) can be easily covered or separated from the cushion body (110).

In order to maximize the air permeability of the cushion cover (130), except for the back, the front and side parts of the cushion cover (130) can be formed on a mesh fabric. In this way, on the one hand, the cushion cover (130) prevents the sweat and body fluid discharged when the user sits down from directly contacting the cushion body (110) and the cushion members (120), and on the other hand, it can realize ventilation and provide the user with comfort.

In addition, the cushion cover (130) can be made of elastic and soft fabrics to help the cushion members (120) provide optimal pressure dispersion. For example, the cushion cover (130) may be made of fabrics such as elastin mesh.

The cushion cover (130) can be fixed on the backrest of the seat through a fixing strap (132). The fixing belt (132) can be made of elastic materials such as rubber, and both ends can be fixed on the left and right sides of the cushion cover (130). The fixing belt (132) surrounds the seat back to the left and right to fix the cushion cover (130) on the seat back with elasticity, so that the lumbar cushion (100) is kept fixedly installed on the seat back.

The present invention has been described according to an embodiment in the schematic diagram, but this is only an exemplary description, and a person of ordinary skill in the art can understand that there can be various modifications or other equivalent embodiments. Therefore, the true technical protection scope of the present invention is only limited by the scope of patent application.

100‧‧‧Lumbar Pad 110‧‧‧Cushion body 110a‧‧‧Slot 111‧‧‧Acupressure protrusion 112‧‧‧First vent 113‧‧‧Second vent 114‧‧‧Protrusion 120‧‧‧Cushion member 121‧‧‧First buffer 121a‧‧‧First through hole 121b‧‧‧The first next door 122b‧‧‧The second next door 122‧‧‧Second buffer 122a‧‧‧Second through hole 123‧‧‧Reinforcing rib 130‧‧‧Cushion cover 131‧‧‧Zipper 132‧‧‧Fixed belt

Fig. 1 is a perspective view of a waist pad according to an embodiment of the present invention. Fig. 2 is a side view of the use case of the lumbar pad shown in Fig. 1. Fig. 3 is a perspective view of the inside of the waist pad of Fig. 1. Fig. 4 is an exploded perspective view of Fig. 3. Fig. 5 is a front view of the cushion member of Fig. 3. Fig. 6 is a cross-sectional view taken along the line A-A in Fig. 5.

110‧‧‧Cushion body

111‧‧‧Acupressure protrusion

112‧‧‧First vent

114‧‧‧Protrusion

120‧‧‧Cushion member

130‧‧‧Cushion cover

131‧‧‧Zipper

132‧‧‧Fixed belt

Claims (3)

A lumbar cushion includes: a cushion body that supports the user's spine when the user maintains a sitting posture; and three cushion members, based on the user's back leaning, on a front of the cushion body in the left and right directions of the cushion body The upper and lower cushion members are respectively inserted into the slots connected to the cushion body in a manner of setting intervals, and are formed of viscoelastic material with a plurality of through holes; wherein the cushion members have the same size and shape, and the cushion members on the left and right sides The cushion member is symmetrical with the center cushion member as the center. The cushion member protrudes from the slot by a height of 2mm~8mm based on the maximum front and rear thickness of the cushion body, and the arrangement interval between the cushion members is 10~ 20mm, where the interval is defined as the shortest distance between adjacent parts; the cushion body includes: a protrusion protruding forward with a certain thickness to surround the circumference of the slot; a plurality of acupressure protrusions , Which are arranged up and down in a row at the center of the upper side of the front; and a plurality of first vent holes formed around the cushion member and arranged in two rows on the left and right sides with the acupressure protrusion as the center; the insert The grooves are respectively formed with a second vent hole. The waist pad according to claim 1, wherein the cushion member includes: a first cushioning portion formed by a plurality of first partition walls, so that the plurality of first through holes respectively penetrate through the front and back in a regular hexagonal cross section; A second buffering portion is formed by partitioning a plurality of second partition walls, so that the plurality of second through holes respectively penetrate through the front and back in a regular hexagonal cross section, and the second buffering portion is stacked in front of the first buffering portion, Making each center of the second through hole coincide with each center of the first through hole; and a reinforcing rib formed in each boundary area of each of the first through hole and the second through hole . The lumbar cushion according to claim 1, further comprising a lumbar cushion cover that wraps and covers the cushion body and the cushion member.

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