TW202007316A - 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

Waist pad

The present invention relates to a cushion that supports a user's waist when the user sits on an object such as a chair.

Recently, the number of people who sit on a chair for a long time in life has been increasing. Since users maintain a sitting posture for a long time while driving a vehicle, the back and waist may be subjected to excessive burdens. Therefore, it is recommended to develop a good sitting habit to protect the back and waist. Therefore, cushions are also used on the backrest of the chair to assist in supporting the waist.

Such cushions should have appropriate flexibility, 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, existing cushions mainly use cotton, sponge, polyurethane foam, rubber, etc. as internal filling materials.

For example, cotton cushions provide comfort to the seated waist by absorbing impact. The reason is that the fiber structure of cotton forms a net shape, and continuously supplies air to the cotton to produce a restoring force. However, the cotton cushion should use a large amount 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 property and breathability.

An object of the present invention is to provide a lumbar pad that allows a user to maintain a correct spine posture and feel comfortable even after sitting for a long time, and also achieve a refreshing sitting sensation.

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

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

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

According to the present invention, the lumbar pad allows the user to maintain a correct spine posture and feel comfortable even when seated for a long time, and at the same time reduces the irritation to the skin by dispersing the pressure, thereby providing comfort, and maintaining proper temperature and humidity through its breathability, Provides comfortable seating. In addition, according to the present invention, a massage function can be provided as the waist moves while 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 the sake of clarity, the shapes and sizes of elements in the drawings may be enlarged.

FIG. 1 is a perspective view of a waist pad according to an embodiment of the invention. Fig. 2 is a side view of the use case of the waist pad shown in Fig. 1. 3 is a perspective view of the interior of the waist pad of FIG. 1. 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 line A-A of Fig. 5.

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

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

The front surface of the cushion body (110) is formed into a shape in which the middle portion is concavely curved to the left and right, so that it can wrap and support both sides of the waist. 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 main body (110) may include a plurality of finger pressing protrusions (111) arranged up and down at the upper central portion of the front surface. Each finger pressing protrusion (111) can bring a finger pressing 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 acupressure protrusion (111) may protrude from the front of the cushion body (110) in a mountain shape. The apex portion of the acupressure protrusion (111) is convexly curved, and may have a circular cross section. Each finger pressing protrusion (111) can be formed in various numbers, sizes, and shapes within the scope capable of performing the above functions.

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 breathability. The first vent holes (112) penetrate back and forth, and each of the first vent holes (112) is provided with finger pressing protrusions (111), which are arranged in two rows on the left and right sides. Of course, within the range capable of maintaining the durability of the cushion body (110), 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 hexagonal 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) improves breathability together with each cushion member (120). The second vent hole (113) may 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 a memory foam. Memory sponge is a material developed by the National Aeronautics and Space Administration to buffer the impact of astronauts when launching the space shuttle. The memory sponge has a restoring force that can slowly return to its original state after being applied with pressure, so the cushion body (110) can properly disperse the pressure exerted 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, and the pressure exerted by the spine can be appropriately dispersed as a whole through the restoring force of the latex.

Each cushion member (120) is based on the user's back leaning, and is inserted into each slot coupled to the cushion body (110) on the front of the cushion body (110) at a set interval in the left-right direction of the cushion body (110) (110a). Each cushion member (120) is arranged on the lower side near the front 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 as it corresponds.

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

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

Each cushion member (120) is a viscoelastic material and has a plurality of through holes. That is, the cushion member (120) has viscosity and elasticity, and is formed as a through-hole structure. Therefore, when the user is seated, the cushion member (120) can disperse the pressure applied to the lumbar spine, with a low critical pressure so as not to squeeze the skin and microvessels, thereby providing optimal comfort. In addition, for body heat and sweat generated at the waist when seated, the cushion member (120) can effectively distribute moisture and sweat through the air pump effect and excellent breathability of the through-hole structure, 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 role in perfecting the viscous cushion body (110) and improves the effect of maintaining the supporting force 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) perfects the elastic cushion body (110), reduces the contact area and pressure with inherent viscosity, thereby reducing the impact on the waist skin Stimulation makes it easy to apply to various body types.

The cushion member (120) of the above structure is not glued to the slot (110a), but is physically inserted and joined, so the cushion member (120) can be deformed independently of the cushion body (110), thereby supporting the user's spine. Since each cushion member (120) has heterogeneity with the cushion body (110) around it, it is possible to provide a massage function as the waist moves while maintaining a sitting posture.

In order to improve the massage effect, each cushion member (120) protrudes from the slot (110a) by a height of 2 mm to 8 mm based on the maximum front and rear thickness of the cushion body (110). The lower the height of the protrusion of the cushion member (120), the worse the massage effect; the higher the height of the protrusion of the cushion member (120), the higher the strength of the cushion, which may 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) may be defined as the shortest distance between adjacent portions 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 coincide with the front edge of the slot (110a), so that the cushion member (120) is inserted into the slot (110a) without a height difference. In addition, the front and back thicknesses of the cushion member (120) may be the same as the depth of the slot (110a).

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

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

The first buffer portion (121) is partitioned and formed by the first partition walls (121b), so that the first through holes (121a) respectively pass through the front and back in a regular hexagonal cross-section. Each first through hole (121a) may be arranged in a hexagon.

The thickness of the first partition wall (121b) may gradually become thinner toward the rear. The first partition wall (121b) may be set to 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. As a result, the first through hole (121a) gradually expands toward the rear, so that when the first buffer portion (121) is injection molded, the molded first buffer portion (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 front to back with a regular hexagonal cross section. Each second through hole (122a) may be arranged in a hexagon.

The thickness of the second partition wall (122b) may gradually become thinner toward the front. The second partition wall (122b) may be set to have a rear end thickness of 1.65 mm to 1.7 mm and a front end thickness of about 1.5 mm. As a result, the second through hole (122a) gradually expands toward the front, so that when the second buffer portion (122) is injection molded, the molded second buffer portion (122) can be easily taken out of the mold. In addition, since the thickness of the front end of the second partition wall (122b) gradually becomes thinner than the thickness of the rear end, the area of contact with the user's spine 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 weak.

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

Each reinforcing rib (123) may be formed in each boundary region of each second through hole (122a) and first through hole (121a). Each reinforcing rib (123) may be molded together when injection molding the second buffer portion (122), and formed around the boundary in the second through hole (122a) connected to the first through hole (121a). As another example, each reinforcing rib (123) may be molded together when injection molding the first buffer portion (121), and formed around the boundary within 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 rib (123) may 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) may be connected to the six corners of the boundary area of the second partition wall (122b) and the first partition wall (121b), respectively.

That is, the three in-line ribs of the reinforcement rib (123) are aligned vertically in the second partition wall (122b) and the first partition wall (121b), respectively. Thus, 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 reinforcement 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 composition of the viscoelastic material used for preparing the cushion member (120) may include a mixture composed of a copolymer of polystyrene polymer and polypropylene and oil. The polystyrene-based polymer has a triblock structure. The polystyrene polymer may be styrene-(ethylene/butene)-styrene block copolymer (SEBS, styrene-(ethylene/buthylene)-styrene block copolymer) or polystyrene-poly(ethylene-ethylene/propylene )-Polystyrene block copolymer (SEEPS, Polystyrene-block-poly(ethylene-ethylene/propylene)-blockpolystyrene). Therefore, the copolymer of polystyrene polymer and polypropylene may be PP-SEBS.

The mixture may comprise 30 to 40% by weight of a copolymer of polystyrene polymer and polypropylene, and 60 to 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 injection will occur during use, so the oil content should be set according to the above range.

The composition may be based on a mixture of polymer and oil 100% by weight, containing 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 decrease. If it exceeds 8% by weight, the hardness increases, so the additive should be added according to the above content range. Additives are used to remove fuel injection and improve heat resistance. Dry silica or wet silica can be used. Fumed Silica can be used for dry silica.

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

The thermal stabilizer can be composed of organic phosphites such as triphenyl phosphite, tri-(2,6-dimethylphenyl) phosphite, tri-(mono- and di-nonylphenyl) phosphite It may be composed of phosphate esters such as phenylphosphonate dimethyl ester or phosphate esters such as trimethyl phosphate, or may be composed of a combination thereof.

The composition may be based on a mixture of copolymer and oil 100% by weight, 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 the aromatic oil is less than 0.5% by weight, the effect of aroma healing 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, mint, and Ylang-Ylang.

If the content of the antibacterial agent is less than 0.05% by weight and the antibacterial activity value is less than 2, the antibacterial effect cannot be exerted. If it is more than 10.0% by weight, problems such as bubbles, reduced physical properties, inability to mold or unmeasured during the preparation process may occur. The antibacterial agent may be an organic antibacterial agent or an inorganic antibacterial agent. The organic antibacterial agent may be zinc pyrithione (Zincbis: 2-pyridinethiol-1-oxide).

In addition, the waist cushion (100) may further 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 each cushion member (120). The size and form of the cushion cover (130) may be set so that each cushion member (120) does not disengage from a state of being inserted into each slot (110a) of the cushion body (110). The cushion cover (130) may include a zipper (131) so that the cushion cover (130) can easily cover or detach from the cushion body (110).

In order to maximize the breathability of the cushion cover (130), in addition to the back, its front and side parts can be formed on a mesh fabric. In this way, the cushion cover (130) on the one hand prevents sweat and body fluids discharged when the user sits down from directly contacting the cushion body (110) and each cushion member (120), and on the other hand, can realize ventilation to provide comfort to the user.

In addition, the cushion cover (130) may be made of a fabric having elasticity and softness to help each cushion member (120) provide optimal pressure distribution. For example, the cushion cover (130) may be made of elastic (elastin) mesh or other fabric.

The cushion cover (130) can be fixed on the seat back through the fixing belt (132). The fixing belt (132) can be made of elastic materials such as rubber, and both ends can be fixed to the left and right edges of the cushion cover (130). The fixing belt (132) fixes the cushion cover (130) to the seat back by elasticity in a state of surrounding the seat back in a left-right direction, so that the lumbar cushion (100) remains fixedly mounted 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 other embodiments of variations or equalities. Therefore, the true technical protection scope of the present invention is limited only by the scope of the patent application.

100‧‧‧waist pad 110‧‧‧Cushion body 110a‧‧‧slot 111‧‧‧ finger pressure protrusion 112‧‧‧First vent 113‧‧‧ Second vent 114‧‧‧Protrusion 120‧‧‧Cushion member 121‧‧‧ First Buffer Department 121a‧‧‧First through hole 121b‧‧‧ Next door 122b‧‧‧Second next door 122‧‧‧Second Buffer Department 122a‧‧‧The second through hole 123‧‧‧reinforced ribs 130‧‧‧Cushion cover 131‧‧‧Zipper 132‧‧‧Strap

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

110‧‧‧Cushion body

111‧‧‧ finger pressure protrusion

112‧‧‧First vent

114‧‧‧Protrusion

120‧‧‧Cushion member

130‧‧‧Cushion cover

131‧‧‧Zipper

132‧‧‧Strap

Claims (6)

A waist pad, including: A cushion body that supports the user's spine while the user maintains a sitting position; and a cushion member based on the user's back leaning on a front surface of the cushion body at a set interval in the left-right direction of the cushion body A slot inserted into the main body of the cushion is formed into a viscoelastic material and has a plurality of through holes. The waist pad of claim 1, wherein the cushion member includes: A first buffer part is formed by a plurality of first partition walls, so that the plurality of first through holes are respectively penetrated in front and back with a regular hexagonal cross-section; a second buffer part is formed by a plurality of second partition walls, so that A plurality of second through-holes respectively pass through the front and back with a regular hexagonal cross-section, the second buffer portion is stacked in front of the first buffer portion, so that each center of the second through-holes communicates with the first Each center of the hole is consistent; and a reinforcing rib is formed in each boundary area of each of the first through hole and the second through hole. The waist pad according to claim 1, wherein the cushion main body includes a plurality of acupressure protrusions arranged up and down in a central portion on the upper side of the front surface. The waist pad according to claim 1, wherein the cushion body includes a plurality of first vent holes formed around the cushion member. The waist pad according to claim 1, wherein the slots are respectively formed with a second vent hole. The waist pad according to claim 1, further comprising a waist pad cover that wraps and covers the cushion body and the cushion member together.

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