A kind of pressure relief diabetic foot shoe with adjustable support point

Abstract

The present invention discloses a decompression diabetic foot shoe with adjustable support points, comprising: a sole and an upper, the sole has an inner cavity, and a support point adjustment mechanism is arranged in the inner cavity; the support point adjustment mechanism comprises: a hard support plate close to the shape of the sole of a human body or the shape of a partial sole of a human body and an adjustment device for pushing the support plate to move; the length of the support plate is less than the length of the inner cavity, and a support area for supporting the junction of the phalanges and the forefoot bones of the human body is arranged on the support plate; the adjustment device comprises at least one trigger part exposed on the sole, and the support plate is pushed to move in the inner cavity by the trigger part, so that the support area is adjusted corresponding to the position of the sole to adapt to different foot shapes. The present invention adds a support point adjustment mechanism inside the sole, which can adjust the shoe support point and the front foot force point for different wearers, increase the comfort of wearing, and meet the needs of different wearers for private customization while realizing mass production.

Description

Technical Field

[0001] The invention relates to the technical field of functional shoes, and more particularly to a pair of pressure-reducing diabetic foot shoes with adjustable support points. Background Art

[0002] Shoes are worn on the feet and there are many types. Generally speaking, shoes include a sole and an upper. A shoe cavity is formed between the sole and the upper, and the foot is inserted into the shoe cavity.

[0003] Different people have different foot sizes. Shoes are numbered according to size according to Chinese standards or international standards. The country's shoe size identification stipulates that manufacturers should mark shoe sizes in millimeters. The marked numbers represent the size of the shoe. For example, if the shoe size is marked as 240, it means that the size of this shoe is 240 mm. Generally, adult shoe sizes are at least: 220, 225, 230---255, 260, 265, etc. Choose the corresponding shoe size according to your foot length.

[0004] Although different people have the same foot length, the same pair of shoes of the same shoe size and foot length may feel different when worn by different people. Some people may feel very comfortable wearing them, while others may feel average. This is due to the differences in foot shapes of different people.

[0005] When people walk, there are two important points of force (force surfaces) on the feet, one at the forefoot and the other at the back of the heel. The point of force at the forefoot is specifically at the connection between the phalanges and metacarpals, which is the front point of force, and the heel is the back point of force. Shoes of the same type and size are all made according to the same mold. Through observation, we can know that the front end (toe) of the shoe will have a certain degree of warpage, and the end point of the warpage generally corresponds to the connection between the phalanges and metacarpals of the human foot, which serves as the support point of the shoe. However, different people with the same foot length will have different lengths of phalanges. The front point of force on the feet of different people is different from the support point made on the shoes they wear. Therefore, when wearing, different people will have different wearing feelings.

[0006] Generally speaking, the supporting points of the soles are subject to more pressure or deformation, and the soles are usually damaged by breaking at the supporting points.

[0007] In addition, for diabetic patients, when the blood sugar of diabetic patients is not well controlled, peripheral neuropathy, peripheral vascular disease and excessive mechanical pressure can cause damage to the soft tissue and bone joint system of the foot, leading to diabetic foot disease. Patients with diabetic foot will have foot deformities, dry and cold skin, calluses, and even foot ulcers and gangrene. Abnormal plantar pressure and shear force are high-risk factors for diabetic foot. The metatarsophalangeal joint is the key support point for human standing and walking, and it is very easy to have abnormal pressure concentration and shear force. In particular, diabetic patients are more likely to have increased pressure on the forefoot due to peripheral neuropathy and peripheral vascular disease, and because the skin at the metatarsophalangeal joint often rubs against the bottom wall of the shoe cavity, diabetic patients wearing ordinary shoes will often have ulcers at the front point of force. The key to solving this problem is to use the warping technology on the sole. Its ability to relieve plantar pressure depends on the warping angle and the warping point.

[0008] However, there are two problems with ordinary shoes when walking: 1. The tilt angle cannot be maintained when walking. 2. The tilt point cannot be adjusted according to personal circumstances and cannot provide the best decompression ability.

[0009] In view of the above problems, there are some customized shoes on the market, but the customization is expensive and cannot be mass-produced. Therefore, the applicant has made technical innovations to the shoes and proposed the following technical solutions. Summary of the invention

[0010] In view of this, the present invention provides a decompression diabetic foot shoe with adjustable support points.

[0011] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a decompression diabetic foot shoe with adjustable support points, comprising:

[0012] A sole and an upper, wherein the sole has an inner cavity extending at least from the arch to the forefoot;

[0013] A support point adjustment mechanism is provided in the inner cavity;

[0014] The support point adjustment mechanism comprises: a hard support plate having a shape close to the sole of a human foot or a partial sole of a human foot, and an adjustment device for pushing the support plate to move in the inner cavity;

[0015] The length of the support plate is smaller than the length of the inner cavity, and a support area is provided on the support plate to support the junction of the phalanges and the forefoot bones of the human foot;

[0016] The adjusting device at least comprises a trigger part exposed on the sole, and the trigger part pushes the support plate to move in the inner cavity, so that the support area is adjusted corresponding to the position of the sole to adapt to different foot shapes.

[0017] In a further technical solution, the support plate is a carbon fiber plate.

[0018] In a further technical solution, the adjusting device also includes: a fixed part and a movable part, the fixed part is fixedly installed in the inner cavity, the movable part is fixedly installed on the support plate, and the movable part can move linearly on the fixed part to push the support plate and the inner cavity to move linearly back and forth.

[0019] In a further technical solution, the fixed member is a slide rail, the movable member is a slider, the triggering part is connected to the slider, and the triggering part pushes the slider to move on the slide rail.

[0020] In a further technical solution, the fixed part includes: a base and an adjusting wheel arranged on the base; a slide groove is arranged on the base; the movable part is a slider, the slider is fixed to the support plate, and the slider is provided with linear teeth, which mesh with the adjusting wheel; the adjusting wheel is connected to the trigger part.

[0021] In a further technical solution, the base is "concave" shaped, the adjusting wheel is installed at the center of the base and can rotate; the trigger part is connected or formed on the adjusting wheel; the base is formed with the sliding grooves on both sides of the adjusting wheel.

[0022] A further technical solution also includes: a decompression insole; the decompression insole is detachable and placed on the sole.

[0023] In a further technical solution, the decompression insole comprises: a surface layer and a bottom layer made of soft material, the bottom layer comprises: a pad frame and pad particles, the pad particles are detachably installed in the space surrounded by the pad frame, and the pad particles are disassembled and assembled as needed.

[0024] In a further technical solution, the bottom surface of the surface layer is provided with adhesive, and the pad particles are installed with the adhesive; the cross-section of the pad particles is a regular polygon.

[0025] In a further technical solution, the surface of the surface layer is provided with markings corresponding to the installation positions of the cushion particles.

[0026] It can be seen from the above technical solutions that, compared with the prior art, the present invention has the following beneficial technical effects:

[0027] 1. The present invention adds a support point adjustment mechanism inside the sole, which can adjust the support point of the shoe and the front force point of the foot for different wearers, thereby increasing the wearing comfort. While realizing mass production, it also meets the needs of different wearers for private customization;

[0028] 2. The support board of the present invention is made of carbon fiber board, which has the characteristics of high hardness. It can automatically drive forward when walking, reduce the force of the sole of the foot, and is suitable for diabetic foot patients to reduce pressure and friction;

[0029] 3. The present invention adds a decompression insole, and the decompression insole can remove the pad particles at the damaged position to form a hollow, thereby reducing the pressure on the damaged position, making it more comfortable and free to wear.

[0030] Other beneficial effects of the present invention are embodied in the specific implementation manner. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0032] Figure 1 A schematic diagram of a shoe;

[0033] Figure 2 This is an exploded view of the shoe;

[0034] Figure 3 is a schematic diagram of a support plate;

[0035] Figure 4 is a schematic diagram of the regulating device;

[0036] Figure 5 A schematic diagram of a pressure relief insole. DETAILED DESCRIPTION

[0037] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0038] In the description of the present application, it should be understood that the terms "longitudinal", "radial", "length", "width", "thickness", "up", "down", "left", "right", "front", "back", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In the description of the present application, unless otherwise specified, "plurality" means two or more.

[0039] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0040] A decompression diabetic foot shoe with adjustable support points, see Figure 1-2 As shown, it includes: a sole 100 and an upper 200. After the sole 100 and the upper 200 are assembled, a shoe cavity is formed inside for the user's foot to be inserted into.

[0041] like Figure 1 The front end of the shoe is tilted upwards corresponding to the position of the toes, forming a slope. The specific angle of the slope is formulated according to international standards and will not be described in detail here. The main technical points of the present invention are: an inner cavity 101 is provided inside the sole 100, and a support point adjustment mechanism 300 is added in the inner cavity 101, which can adjust the support point position of the sole 100 corresponding to the front support point of the human foot. The support point adjustment mechanism 300 includes: a support plate 310 and an adjustment device 320. The support plate 310 is close to the shape of the sole of the human body or the shape of the partial sole of the human body, because the present invention is mainly adjusted for the position of the support point on the forefoot, therefore, the support plate 310 can be close to the shape of the entire sole, or it can be close to the shape from the arch to the toes. In this embodiment, the support plate 310 is close to the shape of the entire sole, which is more convenient for the overall force uniformity of the entire sole 100.

[0042] The adjusting device 320 is used to push the support plate 310 to move in the inner cavity 101. Figure 2 In the figure, it is assumed that the shaded portion A on the support plate 310 is the support area 311 that supports the front force point at the junction of the phalanges and the forefoot bones of the human foot. However, for different wearers, the front force point has deviations, and not every wearer's front force point is directly opposite the support point. The deviation range may be between 0.1-2cm. Therefore, the support plate 310 is pushed to move in the inner cavity 101 through the adjustment device 320, and can move in a straight line toward the toe or heel direction to adjust the front force point and the support point to correspond, which is more comfortable.

[0043] The support plate 310 is a hard plate material, preferably a carbon fiber plate, which has the characteristics of high hardness and not easy to deform.

[0044] More specifically, when walking, at the moment of lifting the foot to take a step, after the heel rises, the forefoot touches the ground. There is a curvature between the toe bones and metacarpal bones. When wearing ordinary shoes, the front end of the shoe will be pressed down to the ground, causing deformation to adapt to the movement of the foot when walking. Because of this, the friction between the front fulcrum and the inner wall of the shoe increases when walking. After walking for a long time, the front fulcrum of the foot is prone to wear, and people with diabetic foot will often develop ulcers. After the support plate 310 is added, due to the high hardness of the support plate 310, after the heel is lifted, the front end of the foot will naturally tilt forward due to the tilt of the front end of the support plate 310, instead of the front end of the shoe being pressed down and deformed; the difference between the two is: with traditional shoes, the wearer applies force on his own when walking to bend the forefoot, press down the front end of the shoe, and increase the friction between the front force point and the inner wall of the shoe, while the latter is due to the suitable shape and hardness of the support plate 310. After the heel is lifted, the front end of the shoe will hardly be pressed down and deformed, and the wearer's foot will automatically tilt forward, reducing the autonomous force of the forefoot, reducing squeezing and friction, and thus when people with diabetic foot wear this shoe, they can minimize and avoid wear and tear on the front force point.

[0045] The present invention is mainly developed for diabetic foot patients. The shoes can be mass-produced and can meet the needs of private customization of diabetic foot patients' shoes with higher comfort.

[0046] In addition, the present invention can also be used for custom-made shoes for ordinary people. Although ordinary people are not as prone to wear and ulceration of the soles of their feet as diabetic foot patients, everyone's front force points are different, and this design can also be used for custom-made shoes.

[0047] The structure of the present invention is described in more detail below:

[0048] The sole 100 may include: an outsole 110 and a midsole 120. The outsole 110 and the midsole 120 are assembled. After assembly, the inner cavity 101 is formed between the outsole 110 and the midsole 120. The inner cavity 101 extends from at least the arch to the forefoot. In this embodiment, the inner cavity 101 extends from the heel to the forefoot. In some other embodiments, the sole 100 may be an integrally formed structure, or may not only have the outsole 110 and the midsole 120, but may also be a three-layer or even a four-layer structure, but the specific principle remains unchanged.

[0049] The length of the support plate 310 is smaller than that of the inner cavity 101 so that the support plate 310 can move forward and backward in the inner cavity 101 to adjust the position of the support area 311. The front end of the support plate 310 also has a tilt, which roughly adapts to the shoe shape. Specifically, the length of the support plate 310 is approximately 0.5-3cm less than the length of the inner cavity 101. While being adjustable, it will not cause discomfort or depression due to excessive gaps. The carbon fiber board is sufficient for support.

[0050] The adjusting device 320 includes: a fixing member 321, a moving member 322 and a triggering portion 323. The fixing member 321 is fixedly installed in the inner cavity 101, and the moving member 322 is fixedly installed on the support plate 310. The moving member 322 can be triggered by the triggering portion 323 to move linearly on the fixing member 321 to push the support plate 310 and the inner cavity 101 to move linearly back and forth.

[0051] In the first embodiment of the adjusting device 320, the fixed part 321 is a slide rail, the movable part 322 is a slider, and the trigger part 323 is connected to the slider. The trigger part 323 pushes the slider to move on the slide rail. The trigger part 323 can be exposed on the upper surface of the sole, that is, in the inner bottom wall of the shoe cavity. By pushing the support plate 310 to move, it is adjusted to the most comfortable position. However, this requires a groove on the midsole 120, and the groove is about 2 cm long, so that the trigger part 323 has avoidance space to move and push the support plate 310 to move; subsequently, an insole is added to the shoe cavity to cover the groove and the trigger part 323, and a positioning structure is also required to position the movable part 322 and the fixed part 321 when adjusted to a suitable position to prevent the support plate 310 from shifting during walking; the positioning structure can be a tooth structure added to the fixed part 321 and the movable part 322.

[0052] In a second embodiment, the adjusting device 320 is Figure 2 The fixing member 321 includes: a base 3211 and an adjusting wheel 3212 disposed on the base 3211; a slide groove 3213 is disposed on the base 3211; the moving member 322 is a slider, the slider is fixed to the support plate 310, and a linear tooth 3221 is disposed on the slider, and the linear tooth 3221 is meshed with the adjusting wheel 3212; the adjusting wheel 3212 is connected to the triggering part 323. The base 3211 is "concave" shaped, and the adjusting wheel 3212 is installed at the center of the base 3211 and can rotate; the triggering part 323 is connected or formed on the adjusting wheel 3212; the base 3211 is formed with the slide grooves 3213 on both sides of the adjusting wheel 3212. The support plate 310 has a groove 312 at the approximate position of the heel, and the trigger part 323 can be a "I" groove, a "X" groove, or a special-shaped groove formed at the center of the adjustment wheel 3212. Here, it is a "I" groove, and a flat-blade screwdriver can be used to drive the adjustment wheel 3212 to rotate, without the need for additional tools. The groove 312 corresponds to the trigger part 323, and accordingly, a hole corresponding to the "I" groove can be opened on the surface of the midsole 120. The trigger part 323 is fixed and does not move in this manner.

[0053] The support plate 310 is fastened to the movable part 322 by screws, and the base 3211 is fixed in the inner cavity 101. When the adjusting wheel 3212 is rotated by a screwdriver, the adjusting wheel 3212 drives the slider with linear teeth 3221 to move linearly to adjust the position of the support area 311 to the position that the wearer considers most comfortable. In this embodiment, the adjusting wheel 3212 is positioned by friction and will not rotate by itself, so there is no need to worry about the support plate 310 shifting by itself. Similarly, the trigger part 323 and the groove body 312 are covered under the insole.

[0054] Optionally, in the above two methods, the trigger part 323 is exposed on the upper surface of the sole 100. When adjusting, it is necessary to take off the shoes first, put them on after adjustment, and take them off again for adjustment if the position is not right. For the convenience of adjustment, the trigger part 323 can be exposed on the side of the sole 100. In this way, when adjusting, it is not necessary to take off the shoes, and the adjustment can be made directly, so that the wearing feeling after adjustment can be quickly reflected, which is convenient for continued comparison and the adjustment is simpler and more convenient. However, if the trigger part 323 is set on the side, the opening or slotting needs to be set on the side, which may encounter problems such as water ingress on rainy days. For the second method, since only the opening corresponding to the trigger part 323 is required, the waterproof work between the trigger part 323 and the sole 100 can be achieved. However, for the first method, since the sole 100 needs to be slotted, it is not suitable for the trigger part 323 to be exposed on the side.

[0055] Optionally, in the above two methods, you can also choose to use electric method for adjustment, such as adding a micro motor. In the first embodiment of the above adjustment device 320, the movement of the slider is controlled by the micro motor, and the trigger part can be changed to a control button; in the second embodiment of the above adjustment device 320, the adjustment wheel 3212 is controlled by the micro motor to rotate, thereby driving the slider to move. However, considering the cost and weight of the shoes, although the electric method can achieve adjustment, it is not the best method, and the shape and length of the user's foot will hardly change. After adjusting to the appropriate position, there is no need to adjust frequently. It can be said that it is almost no longer adjusted. The practicality and cost performance of the electric method are relatively low.

[0056] Furthermore, if Figure 2 and Figure 5 As shown, a decompression insole 400 is placed in the shoe cavity. The decompression insole 400 is made of soft material to increase the comfort of the shoe.

[0057] The decompression insole 400 comprises a surface layer 410 and a bottom layer 420. The decompression insole 400 can be detachably placed on the sole 100 for easy replacement.

[0058] The bottom layer 420 includes: a cushion frame 421 and cushion particles 422. After being assembled, the cushion frame 421 and the cushion particles 422 have roughly the same shape as the surface layer 410. The cushion frame 421 is the edge contour shape of the insole, with a hollow setting in the middle, and the cushion particles 422 are installed in the hollow position.

[0059] The soles of the feet of diabetic foot patients are often worn, or the soles of ordinary people may occasionally be injured or develop corns. The squeezing and friction between the soles and the shoes when walking will deepen the wear and tear, and cause great pain when walking. When using the decompression insole 400, the corresponding pad particles 422 can be removed according to the worn position of the sole, so that a hollow area is formed on the insole 400. When the sole of the foot steps on the ground, due to the setting of the hollow area on the insole 400, the worn part will not be squeezed with the insole 400, and the pressure will be transferred to the position outside the worn part, thereby reducing the pain when the sole of the foot steps on the ground and allowing comfortable walking. When the worn area is healed, the removed pad particles 422 can be reinstalled.

[0060] The cushion particles 422 are regular polygons, assembled on the surface layer 410 , and fill the cushion frame 421 . The bottom surface of the surface layer 410 may be provided with non-stick adhesive.

[0061] The surface layer 410 can be set to a larger thickness or a thinner thick sole. The surface layer 410 mainly serves as a carrier for the cushion frame 421 and the cushion particles 422. It has a reference object so that it can be positioned and assembled, while also preventing dirt, mud, etc. on the soles of the feet from falling into the gap between the cushion frame 421 and the cushion particles 422.

[0062] In addition, the surface layer 410 may be provided with a mark for marking the position of the cushion particles 422. Figure 5 In the figure, the surface layer 410 is provided with a grid-shaped mark, which can facilitate the installation of the cushion particles 422 from the bottom; of course, numbers can be added to the grid-shaped mark, and numbers are also added to the bottom of the cushion particles 422. The user steps on the rubber pad, corresponds to the position of the wound, obtains the value on the surface layer 410, and removes the cushion particles 422 with the same number, which is convenient for use and also convenient for correct removal of the cushion particles 422.

[0063] at last, Figure 1-2 The shoes used in the present invention are in the shape of sports shoes, but they are not limited to sports shoes and can also be used in sandals, single shoes, etc. The present invention does not limit the shape and material of the sole 100 and the upper 200.

[0064] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A decompression diabetic foot shoe with adjustable support points, comprising: a sole (100) and an upper (200), characterized in that: The sole (100) is internally structured with an inner cavity (101), and the inner cavity (101) at least extends from the arch of the foot to the forefoot; a support point adjustment mechanism (300) is arranged in the inner cavity (101); The support point adjustment mechanism (300) comprises: a hard support plate (310) having a shape close to the sole of a human foot or a partial sole of a human foot, and an adjustment device (320) for pushing the support plate (310) to move within the inner cavity (101); The length of the support plate (310) is smaller than the length of the inner cavity (101), and a support area (311) is provided on the support plate (310) for supporting the point of force at the junction of the phalanges and metacarpal bones of the human foot; The adjusting device (320) comprises at least one triggering portion (323) exposed on the sole (100), and the triggering portion (323) pushes the support plate (310) to move in the inner cavity (101), so that the support area (311) is adjusted corresponding to the position of the sole (100) to adapt to different foot shapes; The adjusting device (320) further comprises: a fixing member (321) and a moving member (322), wherein the fixing member (321) is fixedly installed in the inner cavity (101), and the moving member (322) is fixedly installed on the support plate (310), and the moving member (322) can move linearly on the fixing member (321) to push the support plate (310) and the inner cavity (101) to move linearly back and forth.

2. The decompression diabetic foot shoe with adjustable support points according to claim 1, characterized in that: The support plate (310) is a carbon fiber plate.

3. The decompression diabetic foot shoe with adjustable support points according to claim 1, characterized in that: The fixed part (321) is a slide rail, the movable part (322) is a slider, the trigger part (323) is connected to the slider, and the trigger part (323) pushes the slider to move on the slide rail.

4. According to the decompression diabetic foot shoe with adjustable support points as described in claim 1, it is characterized in that: the fixed part (321) includes: a base (3211) and an adjusting wheel (3212) arranged on the base (3211); a slide groove (3213) is arranged on the base (3211); the movable part (322) is a slider, the slider is fixed to the support plate (310), and the slider is provided with linear teeth (3221), and the linear teeth (3221) are meshed with the adjusting wheel (3212); the adjusting wheel (3212) is connected to the trigger part (323).

5. The decompression diabetic foot shoe with adjustable support points according to claim 4, characterized in that: The base (3211) is in a "concave" shape; the adjusting wheel (3212) is installed at the center of the base (3211) and can rotate; the trigger part (323) is connected to or formed on the adjusting wheel (3212); the base (3211) is formed with the sliding grooves (3213) on both sides of the adjusting wheel (3212).

6. The decompression diabetic foot shoe with adjustable support points according to claim 1, characterized in that: Also includes: A decompression insole (400); the decompression insole (400) is detachably placed on the sole (100).

7. The decompression diabetic foot shoe with adjustable support points according to claim 6, characterized in that: The decompression insole (400) comprises: a surface layer (410) made of a soft material and a bottom layer (420); the bottom layer (420) comprises: a pad frame (421) and pad particles (422); the pad particles (422) are detachably installed in the space surrounded by the pad frame (421); and the pad particles (422) can be disassembled and assembled as needed.

8. The decompression diabetic foot shoe with adjustable support points according to claim 7, characterized in that: The bottom surface of the surface layer (410) is provided with adhesive, and the cushion particles (422) are installed with adhesive; the cross section of the cushion particles (422) is a regular polygon.

9. The decompression diabetic foot shoe with adjustable support points according to claim 8, characterized in that: The surface of the surface layer (410) is provided with markings corresponding to the installation positions of the cushion particles (422).

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