Wheelchair spring cushion

Abstract

The utility model discloses a wheelchair spring cushion which comprises a cushion body, the cushion body comprises a spring component arranged in a cavity in the bottom of the cushion body, and the upper surface of the cushion body gradually descends and transitions from the rear end to the front end and from the two sides to the middle to form a shape which is high in the rear, low in the front, high in the outer portion and low in the inner portion and is attached to the buttocks. A first groove is formed between two leg placing positions on the upper surface of the cushion body and / or a second groove is formed in the middle of a hip rear side placing position on the upper surface of the cushion body. The cushion can conform to the shape of the buttocks, so that the contact area is increased to the maximum extent, the buttocks are wrapped and lifted to absorb and disperse local skin pressure, the ventilation grooves are designed in the upper surface of the cushion, the bottom of the cushion is connected with the springs through the ventilation grid non-woven fabric, and the springs are hollow inside, so that ventilation, heat dissipation and cooling of the cushion are facilitated, and bedsores are prevented.

Description

Technical Field

[0001] The utility model relates to the field of seat cushions, in particular to a spring seat cushion wrapped with memory foam, and more particularly to a wheelchair spring seat cushion for preventing bedsore. Background Art

[0002] A wheelchair is a chair equipped with wheels to help replace walking. It is an important mobile tool for the wounded, sick, and disabled for home rehabilitation, transportation, medical treatment, and outdoor activities. To improve comfort during use, a seat cushion is installed. The materials of the seat cushion usually include cotton cloth, flannelette, brocade, nylon, or linen. The structure of the seat cushion is single. After sitting for a long time, the seat cushion will be compacted and difficult to return to its original state, the elasticity will be greatly weakened, and the comfort will also be reduced. There is also an airbag seat cushion that can adjust the inflation degree of the airbag according to user needs, so that the seat cushion adapts to the user. However, the price of such airbag seat cushions is expensive, often several thousand yuan, and they are easily punctured and deflated, with high usage costs.

[0003] The Chinese utility model patent with the publication number CN210446361U discloses a spring seat cushion wrapped with memory foam, including a seat cushion cover. A zipper is sewn on the side of the seat cushion cover. Two pieces of memory foam are filled in the seat cushion cover. The two pieces of memory foam are of the same size and are both square. The two pieces of memory foam are arranged one above the other. A silica gel sleeve surrounds the edges of the two pieces of memory foam. Holes are opened at the tops of the two pieces of memory foam. Multiple notches are provided at the bottoms of the two pieces of memory foam. The notches are arranged in a 9*9 rectangle. A circular rubber sleeve is fixed in each notch. The structure of the utility model is reasonably designed and has a high softness. By combining memory foam with a spring, the spring is used to connect the two pieces of memory foam to increase its elasticity. When the surface is squeezed, the spring provides support and can quickly rebound. At the same time, the memory foam is not easily deformed. Multiple holes are opened on the surface of the memory foam, and the air permeability is good. Whether it is used as a seat or a backrest, it is very comfortable.

[0004] Although this seat cushion can solve some of the above problems, its deficiencies are as follows: an air circulation groove is not designed on the upper surface of the seat cushion body, and the bottom is not hollowed out, so air cannot enter and gas circulation cannot be provided; the multiple layers of the seat cushion are fixed by glue, the process is simple and rough, it is easy to be debonded and damaged after sitting for a long time, and there will be a residual odor of industrial glue, which affects the health of users; the surface of this seat cushion is designed as a flat surface. Although it can play a certain role in decompression, there are still some skin areas where the pressure cannot be completely released, which will increase the risk of bedsore for users. The design does not conform to ergonomics, and it will cause soreness in the waist and back after sitting for a long time, and it cannot meet the needs of people sitting for a long time. The inventor of this application believes that there is still room for further improvement in the above seat cushion structure. Summary of the Utility Model

[0005] In view of the technical problems raised in the background art, the present utility model provides a wheelchair spring cushion to solve at least one of the technical problems mentioned in the background art.

[0006] The specific implementation embodiments of the patent of the present utility model include:

[0007] A wheelchair spring cushion, comprising a cushion body, the cushion body including a spring member disposed in a cavity at the bottom of the cushion body, the upper surface of the cushion body gradually descending from the rear end to the front end and from both sides to the middle, forming a shape that is higher at the back and lower at the front, higher on the outside and lower on the inside and conforming to the shape of the buttocks, and a first groove is provided between the positions where the two legs are placed on the upper surface of the cushion body and / or a second groove is provided in the middle of the position where the rear side of the buttocks is placed on the upper surface of the cushion body.

[0008] In a further preferred implementation embodiment, the first groove gradually transitions from shallow to deep from the middle of the upper surface of the cushion body towards the front of the cushion body, and / or the second groove gradually transitions from shallow to deep from the middle of the upper surface of the cushion body towards the rear of the cushion body.

[0009] In a further preferred implementation embodiment, the first groove extends through the front side surface of the cushion body or is close to the front side surface of the cushion body, and / or the second groove extends through the rear side surface of the cushion body or is close to the rear side surface of the cushion body.

[0010] In a further preferred implementation embodiment, the cushion body includes a crystal flannel layer, an inner core layer, and a bottom anti-slip layer sequentially arranged from top to bottom.

[0011] In a further preferred implementation embodiment, the inner core layer includes memory foam, a spring member, and a breathable mesh non-woven fabric sequentially arranged from top to bottom, wherein a cavity for accommodating the spring member is formed at the bottom of the memory foam.

[0012] In a further preferred implementation embodiment, a plastic mesh and / or a woven wire are / is provided inside the cavity of the memory foam.

[0013] In a further preferred implementation embodiment, the spring member is a plurality of independent pocket springs, and the breathable mesh non-woven fabric connects and fixes the plurality of independent pocket springs.

[0014] In a further preferred implementation embodiment, the memory foam, the spring member, and the breathable mesh non-woven fabric are integrally molded by molding.

[0015] In a further preferred implementation embodiment, the rear side of the cushion body gradually descends from the middle to both sides to form a shape that is higher in the middle and lower on both sides, and the highest position in the middle is designed in the shape of a V-shaped opening.

[0016] In a further preferred implementation embodiment, it further includes a cushion cover covering the cushion body, and a handle is provided on the left side and / or the right side of the cushion cover.

[0017] The spring cushion protected by the utility model patent can fit the shape of the buttocks, thus maximizing the contact area, wrapping and lifting the buttocks to absorb and disperse the local skin pressure, and preventing the occurrence of bedsore; the ergonomic position design can relieve the symptoms of low back pain, and is suitable for patients with low back pain, sciatica, scoliosis and children who need to correct bad sitting postures; the upper surface of the cushion is designed with breathable grooves, and the bottom uses breathable mesh non-woven fabric to connect and fix the hollow interior of the spring, which is conducive to air circulation, heat dissipation and temperature reduction of the cushion, and prevents the occurrence of bedsore (pressure sore). Using independent pocket springs can effectively isolate a part of the noise of metal friction, and each spring operates independently, with strong anti-interference ability; the molded one-piece molding has no industrial adhesives, which is beautiful, durable and environmentally friendly. Description of the Drawings

[0018] Figure 1 It is a three-dimensional view of the cushion of the present utility model;

[0019] Figure 2 It is a front view of the cushion of the present utility model;

[0020] Figure 3 It is a top view of the cushion of the present utility model;

[0021] Figure 4 It is a cross-sectional view of the cushion of the present utility model;

[0022] Figure 5 It is a bottom view of the cushion of the present utility model;

[0023] Figure 6 It is a side view of the cushion of the present utility model;

[0024] Figure 7 It is a rear view of the cushion of the present utility model.

[0025] In the figure: 1 - cushion body, 21 - first groove, 22 - second groove, 3 - crystal velvet cloth layer, 4 - inner core layer, 5 - bottom anti-slip layer, 6 - memory foam, 7 - plastic grid or mesh wire, 8 - breathable mesh non-woven fabric, 9 - spring member. Detailed Description of the Invention

[0026] The features and exemplary embodiments of each aspect of the utility model patent will be described in detail below. In order to make the purpose, technical solutions and advantages of the utility model patent clearer, the following combines the drawings and embodiments to further describe the utility model patent in detail. It should be understood that the specific embodiments described herein are only configured to explain the utility model patent and are not configured to limit the utility model patent. For those skilled in the art, the utility model patent can be implemented without some of these specific details. The following description of the embodiments is only to provide a better understanding of the utility model patent by showing examples of the utility model patent.

[0027] The technical solution protected by this utility model patent will be further described in detail below in conjunction with the following drawings and embodiments.

[0028] For the convenience of describing the seat cushion structure later, when the user is located on the seat cushion, the front of the user is defined as "front side", "front end", "front part", the back side of the patient is defined as "back side", "back end", "back part", and both sides of the patient are defined as "both sides", "side surface".

[0029] As Figure 1 and Figure 4 shown, it relates to a wheelchair spring seat cushion protected by this utility model patent. This spring seat cushion can disperse the local pressure on the pressure-bearing parts of the human body. The spring seat cushion includes a seat cushion body 1, and the seat cushion body 1 includes a spring member 9 arranged in the cavity at the bottom of the seat cushion body 1. The seat cushion body 1 is in a horseshoe-shaped structure when viewed from the top view. Along the front and back direction of the seat cushion, the middle and front end of the upper surface of the seat cushion body 1 are lower than the back end and both sides. The height of the back end and both sides of the seat cushion body 1 is 11 - 14 cm, and the height of the lowest part in the middle and front end of the seat cushion body 1 is 8 - 10 cm. In actual application, the height of the back end, front end, both sides of the seat cushion body 1 and the height of the highest part in the middle can be designed and selected according to the needs of use.

[0030] Furthermore, along the direction of both sides and the back end of the seat cushion, the upper surface of the seat cushion body 1 gradually slopes down from the back end to the front end and from both sides to the middle, forming a shape that is higher at the back and lower at the front, higher on the outside and lower on the inside, and fits the buttocks. That is, the back end and both side edges are wrapped and raised. With the above seat cushion structure, when the patient sits on the seat cushion, the shape of the upper surface of the seat cushion basically fits the contact surface of the buttocks and thighs, preventing the patient from being displaced during use, and at the same time increasing the force-bearing area and better dispersing the pressure.

[0031] Furthermore, as Figures 1-3 shown, there is a first groove 21 between the positions where the two legs are placed on the upper surface of the seat cushion body 1. The first groove 21 gradually transitions from shallow to deep from the middle of the upper surface of the seat cushion body 1 towards the front end of the seat cushion body 1. Preferably, the first groove 21 extends through the front side surface of the seat cushion body 1 or is close to the front side surface of the seat cushion body 1.

[0032] Furthermore, as Figures 1-4 and Figure 7 shown, there is a second groove 22 in the middle of the position where the buttocks are placed on the upper surface of the seat cushion body 1. The second groove 22 gradually transitions from shallow to deep from the middle of the upper surface of the seat cushion body 1 towards the back part of the seat cushion body. Preferably, the second groove 22 extends through the back side surface of the seat cushion body 1 or is close to the back side surface of the seat cushion body 1.

[0033] Preferably, the first groove 21 and the second groove 22 are spaced a certain distance apart and are not connected together.

[0034] The above-mentioned first groove 21 and second groove 22 improve the air circulation between the patient's buttocks and the cushion, reducing the risk of bedsores.

[0035] As Figure 6 As shown, the cushion body 1 includes a crystal flannel layer 3, a core layer 4, and a bottom anti-slip layer 5, which are arranged in sequence from top to bottom. Through the setting of the crystal flannel layer 3, the functions of moisture absorption and ventilation can be achieved, keeping the surface of the cushion body 1 dry. The core layer 4 can play a role in support and decompression. In addition, the bottom anti-slip layer 5 can increase the friction with the seat, playing an anti-slip role and avoiding the cushion body 1 slipping out of the user's seat during use, resulting in a poor user experience. Further preferably, the bottom anti-slip layer 5 is an anti-slip particle cloth layer.

[0036] As Figure 4 As shown, the core layer 4 is composed of a memory foam 6, a spring member 9, and a breathable mesh non-woven fabric 8 arranged from top to bottom. Preferably, the thickness of the memory foam 6 is 4 - 10 cm, and a cavity is provided at the bottom of the memory foam 6, and the spring member 9 is arranged in the cavity, and the height of the spring member 9 is 4 - 8 cm. Further preferably, the spring member 9 is an independent pocket spring, and the independent pocket spring is to encapsulate a single spring in an independent bag. Preferably, the spring member 9 in this patent is composed of 5 independent pocket springs arranged horizontally and vertically, or 6 independent pocket springs arranged horizontally and vertically. The independent pocket springs are connected and fixed to each other, and the bottom of the independent pocket spring is connected to the breathable mesh non-woven fabric 8 at the bottom of the cushion to form an integral body. The memory foam 6 is adopted in this patent, making the cushion soft and hard moderate. After the independent pocket spring 9 is compressed for a long time, it can restore its original shape, making the cushion body 1 have good flexibility and resilience. The breathable mesh non-woven fabric 8 has good air permeability and can quickly dissipate heat, and one will not feel stuffy even when sitting for a long time, creating a comfortable use experience.

[0037] Preferably, the cushion body 1 is integrally formed by molding. Specifically, the breathable mesh non-woven fabric 8 and the independent pocket spring 9 are first placed in a mold. Preferably, the breathable mesh non-woven fabric 8 and multiple independent pocket springs 9 are processed into an integral body in advance, and then the memory foam stock solution is injected into the mold, and it is foamed and expanded by heating and pressure. The memory foam has self-adhesion during the foaming process, and the independent pocket spring 9 and the memory foam 6 form an integral body.

[0038] As Figure 4 As shown, when the cushion body 1 is in the molding injection process, a plastic mesh or a woven wire 7 is added inside the cavity at the bottom of the memory foam 6 to enhance the tensile strength of the memory foam main body, avoid the main body of the memory foam 6 from breaking or cracking, and extend the service life of the cushion.

[0039] Further preferably, the cushion body is covered with a cushion cover, and a handle is provided on the left side and / or the right side of the cushion cover, which is convenient for the installation and removal of the cushion on the wheelchair or seat.

[0040] In order to further demonstrate the functions of the cushion of this patent, the following specifically lists the usage scenarios of the cushion and the beneficial effects brought about by using the cushion.

[0041] Example 1

[0042] In this embodiment, when people place the cushion on a seat or wheelchair for use, since the upper surface of the cushion body can fit the shape of the buttocks, the contact area is maximally increased, the buttocks are wrapped to lift and absorb and disperse the local skin pressure, preventing the occurrence of pressure sores. The upper surface is designed with ventilation grooves, and the bottom uses breathable mesh non-woven fabric to connect and fix the spring members, and the interior is hollowed out, which is conducive to the air circulation, heat dissipation and cooling of the cushion.

[0043] Example 2

[0044] In this embodiment, when people have poor blood circulation in the lower limbs due to varicose veins, vasculitis or long-term bedridden, the legs can be placed on the cushion. Because the cushion has a certain height, it can assist in elevating the affected limb, promoting blood return, and helping to improve the conditions such as varicose veins, vasculitis or poor blood circulation in the lower limbs caused by long-term bedridden.

[0045] Example 3

[0046] In this embodiment, when people have discomfort in the waist and need to use a soft cushion, this cushion can be placed on the seat. This cushion conforms to the ergonomic positioning design, can relieve the symptoms of low back pain, and is suitable for patients with low back pain, sciatica, scoliosis and children who need to correct bad sitting postures.

[0047] The inventor of this patent selected this patent cushion and other cushions for a comparative experiment to further illustrate that the technical effects of using this patent cushion are obvious.

[0048] Comparative Experiment 1:

[0049] In this experiment, long-term wheelchair volunteers were randomly selected from a nursing home. 50 people were selected for each of this patent cushion, the horseshoe-shaped cushion and the ring gasket for a comparative experiment. The following table shows the pressure sore incidence data after 7 days, 15 days, 30 days and 60 days of use:

[0050] [Table of Pressure Sore Incidence Test]

[0051]

[0052] Comparative Experiment 2:

[0053] In this experiment, long-term wheelchair volunteers were randomly selected from a disabled persons' federation institution. 50 people were selected for each of the patented cushion, the horseshoe-shaped cushion, and the annular washer for a comparative experiment. The following table shows the data of the cushion rebound recovery rate after 7 days, 15 days, 30 days, and 60 days of use:

[0054] Comparison Table of Cushion Rebound Recovery Rate Test after Compression

[0055] Serial number Types of seat cushions 7 days 15 days 30 days 60 days 1 The seat cushion of this patent 100％ 100％ 98％ 95％ 2 Horseshoe-shaped seat cushion 90％ 85％ 78％ 70％ 3 Circular washer 88％ 80％ 71％ 65％

[0056] From the experimental data comparison table, it can be seen that most users have obvious effects in preventing bedsore after using the patented cushion. After 30 days of use, the effect is very significant, and the cushion can quickly rebound and return to its original state after being compressed and decompressed.

[0057] The above describes the implementation manners of the present utility model. However, the present utility model is not limited to the above implementation manners. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A wheelchair spring cushion, characterized in that, It includes a seat cushion body which includes a spring member disposed in a cavity at the bottom of the seat cushion body. The upper surface of the seat cushion body gradually slopes down from the rear end to the front end and from both sides to the middle, forming a shape that is higher at the back and lower at the front, higher on the outside and lower on the inside, conforming to the shape of the buttocks. There is a first groove between the positions where the legs are placed on the upper surface of the seat cushion body and / or a second groove in the middle of the position where the back of the buttocks is placed on the upper surface of the seat cushion body.

2. The wheelchair spring cushion according to claim 1, characterized in that, The first groove gradually transitions from shallow to deep from the middle of the upper surface of the seat cushion body towards the front of the seat cushion body, and / or the second groove gradually transitions from shallow to deep from the middle of the upper surface of the seat cushion body towards the rear of the seat cushion body.

3. The wheelchair spring cushion according to claim 2, wherein, The first groove extends through the front side surface of the seat cushion body or is close to the front side surface of the seat cushion body, and / or the second groove extends through the rear side surface of the seat cushion body or is close to the rear side surface of the seat cushion body.

4. The wheelchair spring cushion according to any one of claims 1 to 3, characterized in that, The seat cushion body includes a crystal velvet cloth layer, an inner core layer, and a bottom anti-slip layer which are arranged in sequence from top to bottom.

5. The wheelchair spring cushion according to claim 4, characterized in that, The inner core layer includes memory foam, a spring member, and a breathable mesh non-woven fabric which are arranged in sequence from top to bottom. A cavity for accommodating the spring member is formed at the bottom of the memory foam.

6. The wheelchair spring cushion according to claim 5, wherein A plastic grid and / or a woven wire are provided inside the cavity of the memory foam.

7. The wheelchair spring cushion according to claim 5, wherein, The spring member is a plurality of independent pocket springs, and the breathable mesh non-woven fabric connects and fixes the plurality of independent pocket springs.

8. The wheelchair spring cushion according to claim 5, wherein The memory foam, the spring member, and the breathable mesh non-woven fabric are integrally molded by molding.

9. The wheelchair spring cushion according to claim 1, wherein The rear side of the seat cushion body slopes down from the middle to both sides, forming a shape that is higher in the middle and lower on both sides. The highest position in the middle is designed in the shape of a V-shaped opening.

10. The wheelchair spring cushion according to claim 1, characterized in that, It further includes a seat cushion cover covering the seat cushion body, and a handle is provided on the left side and / or the right side of the seat cushion cover.

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