JP3240265U - elastic seat cushion - Google Patents

Abstract

The present invention provides an elastic seat cushion that uniformly receives force and is excellent in comfort and repulsive force. A first elastic body (1), a second elastic body (2), and a cover body (3) are provided, wherein the second elastic body is internally fitted or fused to the first elastic body, and the cover body is the above-mentioned cover body. A wear-resistant cover covering the outer side of the first elastic body, the second elastic body having a plurality of storage chambers, and a plurality of elastic units provided in the plurality of storage chambers in a one-to-one correspondence, The plurality of storage chambers of the wear-resistant cover are provided independently of each other, the softness of the first elastic body is greater than the softness of the second elastic body, and the elastic force of the second elastic body is greater than the softness of the second elastic body. 1 Discloses an elastic seat cushion with an elastic force greater than that of an elastic body. [Selection drawing] Fig. 1

Description

TECHNICAL FIELD The present invention relates to the technical field of cushion structures, and more particularly to elastic seat cushions.

Conventional chairs or sofas are usually equipped with seat cushions or back cushions with soft fillings such as foams and sponges, but after long-term use, the fillings are compressed and lose their elastic effect and become dented. Transforms with Also, although the softness can be increased by installing stuffing, the stuffing itself does not have a cushioning effect and the repulsive force is small, so it cannot assist a person to stand up. There are also seat cushions or back cushions in which springs are provided. For example, Patent Document 1 discloses a spring seat cushion that achieves repulsion by providing a spring with padding such as felt, coconut, sponge, etc. It is easy to interfere, the force distribution is poor, and the force received by the seat cushion is uneven. Patent Document 2 discloses a spring seat cushion with multiple linear springs arranged in parallel to provide elastic support by tilting deformation of coil springs, but the deformation range and load-bearing capacity are small, and the hardness is too large. Therefore, it is not suitable for long periods of sitting.

Chinese Patent Publication No. CN204378584U Chinese Patent Publication No. CN211130429U

The present invention focuses on the above-mentioned problems, and proposes an elastic seat cushion that receives uniform force and has excellent comfort and resilience.

The present invention takes the following technical means. The present invention comprises a first elastic body, a second elastic body and a cover body, wherein the second elastic body is internally fitted or fused to the first elastic body, and the cover body is outside the first elastic body. The second elastic body includes a wear-resistant cover having a plurality of storage chambers and a plurality of elastic units provided in the plurality of storage chambers in a one-to-one relationship, and the wear-resistant cover includes a plurality of storage chambers. are provided independently of each other, the softness of the first elastic body is greater than the softness of the second elastic body, and the elastic force of the second elastic body is greater than the elastic force of the first elastic body.

The second elastic body having a large elastic force in the present application is wrapped in the first elastic body having a large softness, so that the part that directly contacts the human body is soft and comfortable to use. The action of the elastic force of the second elastic body can effectively support the human body, so that the deformation of the entire elastic seat cushion is relatively small. Since the elastic force is relatively large, it has a large repulsive effect on the human body and can play a role in assisting the person to stand up.

In addition, since the elastic unit in the second elastic body does not come into direct contact with the first elastic body and is separated through the wear-resistant cover, the wear that occurs after long-term contact between the elastic unit and the first elastic body is reduced. Problems can be effectively prevented. By distributing the plurality of elastic units in the first elastic body, the acting force can be effectively dispersed, and the force received by the elastic seat cushion can be made more uniform. A plurality of elastic units are placed in separate storage chambers, that is, the elastic units are independent of each other, and do not interfere with each other during use, the space in the storage chamber is relatively small, and the movement range of the elastic units is can be limited, and failure of the elastic structure due to displacement or collapse of the elastic unit can be avoided to some extent.

Alternatively, the compressibility of the elastic seat cushion is 80% or less, the elastic seat cushion has strong elastic support, can effectively assist a person to stand up, and the compression ratio of the elastic seat cushion is small, and the overall strong load and long service life.

Alternatively, the modulus of elasticity of each elastic unit is the same, and the elastic units can be arranged in sequence, such as in a row, in a polygon or in a circle, so that the elastic seat cushion receives more uniform forces.

As an alternative, the modulus of elasticity of each elastic unit gradually decreases from bottom to top along its axial direction, i.e., the modulus of elasticity at the top is small, the modulus of elasticity at the bottom is large, and the top is more flexible. 、When the elastic seat cushion deforms, it deforms according to the first spring and the load capacity, ensuring the fit between the elastic seat cushion and the surface of the human body, and the lower part is harder, so it is more stable during use. can provide support.

Alternatively, the modulus of elasticity of each elastic unit is 50-750 N/m, the density of the elastic unit is 200-800 pcs/m ² , and the elastic seat cushion can support a user weighing 30-120 kg. If the elastic modulus and density of the elastic unit are too small, the elastic bearing capacity will be small, and it will easily deform after being used for a long time. If the elastic modulus and density of the elastic unit are too large, it will affect the comfort during use. Specifically, by adjusting the elastic modulus and density of the elastic unit, it is possible to achieve the purpose of achieving both elastic support and comfort.

Preferably, the modulus of elasticity of each elastic unit is 350 N/m and the density of the elastic units is 400 pieces/m ² for optimum elastic support and comfort. An elastic unit is a single spring whose radius and modulus of elasticity are the same everywhere along its axis. Specifically, the spring steel wire diameter after quenching is 1.4 mm, the spring coil diameter is 4 cm, and the spring height is 3 to 5 cm. The material springs can ensure sufficient supporting force and repulsive force as seat cushion padding, and the density of 400 springs per square meter is the most comfortable and economical. meet.

Alternatively, the elastic unit comprises a first spring and a second spring that fit from the outside to the inside, the radius and modulus of elasticity of the first spring being the same everywhere along its axial direction, and the radius and modulus of the second spring being the same everywhere along its axis. The modulus of elasticity decreases gradually from bottom to top along its axial direction. The structure with two springs effectively disperses the acting force and makes the received force more uniform, ensuring the life of the elastic unit, maintaining a stable elastic force, and resisting extreme repeated impacts. can withstand.

Also, since the radii of the first spring and the second spring are different, there is no entanglement or interference between the two during expansion and contraction. Specifically, the rotation direction of the first spring is different from the rotation direction of the second spring, and the elastic modulus of the second spring gradually decreases from bottom to top along its axial direction, providing both comfort and stability. be able to. The density of the steel wires in the upper and lower parts of the second spring is also different, that is, the lower part is relatively dense and the upper part is relatively sparse. can be avoided.

Alternatively, the second elastic body further comprises a guide device for mounting and guiding the elastic unit, the guide device being provided on the inner wall corresponding to each receiving chamber of the wear-resistant cover. The guide device can prevent the elastic unit from swaying in the horizontal direction to a certain extent, and can stably support the elastic unit.

Specifically, the guide device comprises a base and a guide post, the base being circular or elliptical, the guide post being provided on the base and tapering towards the free end of the guide post. The elastic unit fits the guide post, the height of the elastic unit after compression is not less than the height of the guide post, and the guide device will not affect the comfort of the elastic seat cushion after the elastic unit is compressed. do not have. In addition, the center of gravity of the guide device can be lowered, and since the elastic unit fits the guide device, it is difficult to fall down.

One end of the elastic unit can be fixed to the guide device so that the elastic unit does not drop out of the guide device. The guide device has an integral structure and is excellent in integrity. The entire guide device is a trumpet-like structure that contracts from bottom to top, and since the side surface of the guide post is a concave arc surface, it does not affect the expansion and contraction of the elastic unit, and has a guiding effect on the expansion and contraction of the elastic unit. become smoother. Since the guide device is made of Teflon (registered trademark) material, it reduces friction and has excellent lubricity, so that noise due to friction with the guide device does not occur when the elastic unit is stretched and deformed.

Alternatively, the first elastic body is made of a foam material and the second elastic body and the first elastic body form a unitary structure through foaming. When foam-molding the first elastic body, the second elastic body is placed in the center of the mold, the foam material is chemically reacted in the mold and molded, and then the first elastic body and the second elastic body are fused. After molding, the first elastic body can tightly wrap the second elastic body, and the integration is improved. However, the present invention is not limited to this. The first elastic body is cut into different shapes and thicknesses according to requirements, and then the second elastic body is inserted into the center of the first elastic body and adhered with an adhesive material. It can be fixed, which increases the operation procedure and wastes scraps, but by connecting the first elastic body and the second elastic body, it is possible to achieve the purpose of achieving both comfort and repulsion. , the invention is not particularly limited in this respect.

A fixed/detachable cooling gel or heating sheet may be provided on the surface of the first elastic body to meet the needs of use in different climates in summer and winter.

Specifically, the wear-resistant cover can be made of thick non-woven fabric, and the storage chambers in the wear-resistant cover can be separated by ultrasonic welding technology. The outer cover uses a double structure, and the inner cover is a 100% polyester lined fabric cover, making it easy to replace the outer cover. The first elastic body is a high-rebound/low-rebound sponge, the material is soft and comfortable to use, and the surface of the sponge can be molded or cut into a bird's nest, rectangle, triangle, wedge shape, etc. .

The elastic seat cushion structure of the present invention is not only suitable for seat cushions, but also can be used as lumbar cushions, headrests, neck pillows, back cushions, floor cushions, sofa cushions, outdoor cushions, pillows, naps. It can also be used as pillow pad functions such as pillows, wedge-shaped pillows, triangular pillows, leg lift pillows, and foot pillows, as well as mattresses, outdoor pads, pet pads, bath cushions, rehabilitation pads for nursing care assistance, and elderly care. It can also be used as a pad for pets, pet houses, pet sofas, and pet steps, so the product has a wide range of uses.

The present application uses a first elastic body with a large softness to contact the human body, so that it is comfortable to use, and inserts a second elastic body with a large elastic force in the center of the first elastic body. It can provide good elastic support, and considers both comfort and resilience. The second elastic body comprises a plurality of elastic units, which can effectively disperse the acting force, make the received force more uniform, and separate the first elastic bodies with a wear-resistant cover to prevent wear. By partitioning the wear-resistant cover into a plurality of storage chambers independent of each other, mutual interference between elastic units can be effectively prevented, thus ensuring the life of the elastic seat cushion.

1 is a schematic diagram of an internal structure according to Example 1 of the present application; FIG. It is a partial sectional view concerning Example 1 of this application. FIG. 4 is a schematic configuration diagram of an elastic unit according to Example 2 of the present application; FIG. 3 is a schematic configuration diagram of an elastic single body according to Example 3 of the present application; It is a schematic block diagram of the guide apparatus which concerns on Example 4 of this application. FIG. 11 is a schematic configuration diagram of a case where an elastic single body according to a fourth embodiment of the present application is fitted with a guide device; It is a partial sectional view concerning Example 5 of this application.

The present invention will now be described in detail and completely through specific embodiments with reference to the accompanying drawings.

(Example 1)
1 and 2, this embodiment provides an elastic seat cushion comprising a first elastic body 1, a second elastic body 2 and a cover body 3. As shown in FIG. The second elastic body 2 includes a wear-resistant cover having a plurality of independent storage chambers 211 and a plurality of elastic units 22 provided in the storage chambers 211 in a one-to-one correspondence. Here, the first elastic body 1 is a high-resilience/low-resilience sponge, the elastic unit 22 is a high-strength wire spring with a steel wire diameter of 1.4 mm, a spring coil diameter of 4 cm, and a total height of 3-5 cm, and a wear-resistant cover. 21 is made of thick non-woven fabric. The elastic modulus of each elastic unit 22 is the same, 350 N/m, and the radius and elastic modulus of each elastic unit 22 are the same everywhere along its axial direction, and the density of the elastic units 22 is 400/m ² , All elastic monomers 22 are arranged in a row.

When foam-molding the first elastic body 1, the entire second elastic body 2 is put into a mold, and the second elastic body 2 and the first elastic body 1 are fused and integrated. Thereafter, an inner cover 31 made of 100% polyester material and an outer cover 32 made of polyester fiber material were successively covered on the outside of the first elastic body 1 to obtain an elastic seat cushion.

A compression test was performed on an elastic seat cushion with specifications of 420 mm x 420 mm x 77.3 mm at a test speed of 100 mm/min. Specific structures are shown in Table 1.

(Example 2)
2 and 3, the difference from Embodiment 1 is that the elastic modulus of each elastic unit 22 of this embodiment gradually decreases from bottom to top along its axial direction, that is, the upper part 221 The modulus of elasticity is small, the modulus of elasticity of the lower part 222 is large, and the modulus of elasticity of the upper part 221 is more flexible. The lower part 22 is stiffer and therefore provides more stable support in use.

(Example 3)
2 and 4, the difference from Embodiment 1 is that the elastic unit of this embodiment comprises a first spring 223 and a second spring 224 fitted from the outside to the inside, the radius of the first spring 223 and the The elastic modulus is the same everywhere along its axial direction, the radius and elastic modulus of the second spring 224 gradually decrease along its axial direction from bottom to top, and the two spring structure allows the acting force to be effectively to maintain a stable elastic force and withstand extreme repeated impacts.

(Example 4)
Referring to FIGS. 2, 5 and 6, the difference from the first embodiment is that the guide device 4 for guiding the expansion and contraction of the elastic unit 22 is provided in this embodiment. The guide device 4 is an integral structure comprising a base 41 and a guide post 42. The base 41 is fixed to the inner wall of the wear-resistant cover 21, and the guide post 42 tapers toward its free end. The elastic unit 22 fits the guide post 42, and one end of the elastic unit 22 is fixed to the base 41, so that the elastic unit 22 does not drop off from the guide device 4, and the elastic unit 22 after compression does not fall off. The height of the unit 22 is smaller than the height of the guide post 42, which does not affect the comfort during use.

(Example 5)
Referring to FIG. 7, the difference from the first embodiment is that after the first elastic body 1 is foam-molded, the center of the first elastic body 1 is cut to form a plurality of mounting grooves 11, and the second elastic body 2 are arranged in a row in the mounting groove 11 to form a separate structure for the second elastic body 2 and the first elastic body 1 .

The above are only preferred embodiments of the present invention, the protection scope of the present invention is not limited to such embodiments, equivalent substitutions, direct Any application to other directly or indirectly related technical fields shall also fall within the protection scope of the present invention.

Claims (10)

An elastic seat cushion comprising a first elastic body, a second elastic body, and a cover body, wherein the second elastic body is internally fitted or fused to the first elastic body, and the cover body is the A wear-resistant cover covering the outer side of the first elastic body, the second elastic body having a plurality of storage chambers, and a plurality of elastic units provided in the plurality of storage chambers in a one-to-one correspondence, The plurality of storage chambers of the wear-resistant cover are provided independently of each other, the softness of the first elastic body is greater than the softness of the second elastic body, and the elastic force of the second elastic body is greater than the softness of the second elastic body. 1. An elastic seat cushion having an elastic force greater than that of an elastic body. The elastic seat cushion according to claim 1, wherein the compressibility of the elastic seat cushion is 80% or less. The elastic seat cushion according to claim 1, characterized in that the modulus of elasticity of each said elastic unit is the same. The elastic seat cushion according to claim 3, wherein each elastic unit has an elastic modulus of 50-750 N/m and a density of 200-800 pieces/m ² . The elastic seat cushion according to claim 4, characterized in that the modulus of elasticity of each elastic unit is 350 N/m and the density of the elastic units is 400 pieces/ ^m2 . A resilient seat cushion according to claim 1, characterized in that said resilient unit is a single spring, the radius and modulus of elasticity of said spring being the same everywhere along its axial direction. The elastic unit comprises a first spring and a second spring fitted from the outside to the inside, the radius and elastic modulus of the first spring being the same everywhere along its axial direction, and the radius and elastic modulus of the second spring being the same everywhere along its axial direction. 2. An elastic seat cushion according to claim 1, characterized in that the modulus gradually decreases along its axial direction from bottom to top. The second elastic body further comprises a guide device for mounting and guiding the elastic unit, and the guide device is provided on an inner wall corresponding to each of the storage chambers of the wear-resistant cover. Item 8. The elastic seat cushion according to any one of Items 1 to 7. The guide device comprises a base and a guide post, the base being circular or elliptical, the guide post being provided on the base and tapering towards the free end of the guide post. 9. The elastic seat cushion according to claim 8, wherein said elastic unit fits said guide post, and the height of said elastic unit after compression is not less than the height of said guide post. The elastic seat cushion according to claim 1, wherein the first elastic body is made of a foam material, and the second elastic body and the first elastic body form an integral structure through foaming.

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