JPH0747022A - Back rest slab for correction - Google Patents

Abstract

PURPOSE:To provide a correctional back rest slab which is used mainly by building it inside the back rest portion of a seat of a vehicle or furnishing it from the outside. CONSTITUTION:This is a lengthwise long slab 1 which consists of an elastic material that is hard enough to have little sinkage caused by a person's weight and which possesses about the same area as that of the back of a person. A center lengthwise groove 3 is formed, and cross sectionwise, thickness increases gradually toward the center lengthwise groove 3, and a predetermined position somewhat descended from the center cross-sectionwise is made to be a maximum thickness portion.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a straightening backrest plate used for a backrest portion of a seat, and is mainly intended to be incorporated in the backrest portion of a car seat or to be used by being mounted from the outside. It was developed by.

[0002]

2. Description of the Related Art Conventionally, there have been significant advances in vehicle performance, safety, style, etc., but the seat, especially the backrest of the driver's seat, which should have been improved, has hardly been improved. It was The cause is that, firstly, the shape of the user's back and waist is inconsistent, and secondly,
Individual requirements are made by people with back problems, low back problems, etc. Third, the structure and shape of the backrest plate in the seat are emphasized in the S-shaped curve observed from the side. It is conceivable that only the improvements that were made were carried out.

Considering a conventional car seat, therefore, the seat of the car is basically supported by the person's back sinking into the cushion of the backrest surface to support the body, and the seat is extended to the left and right. The bucket seat method that wraps the entire back in order to prevent the sway and the method called the lumbar support system that laterally presses around the lumbar vertebra were added.

However, if the entire back continues to sink in an average, the surrounding muscles and muscles holding the spine loosen, the balance of the spine tends to be out of balance, and back pain, stiff shoulders, and internal organ diseases occur. There were fears, and the posture became bad close to the stoop, and it was not suitable for driving, and it was unfavorable for the body.

[0005]

Therefore, according to the present invention, by activating the muscles and muscles of the back, waist and the like even while sitting down, by attaching it to the existing vehicle seat from the outside or incorporating it in the seat. It was developed for the purpose of maintaining the spine in a state close to a standing state, and naturally making the posture correct.

[0006]

SUMMARY OF THE INVENTION In order to solve the above problems, the present invention comprises a cushion material made of a firm and elastic material that hardly sinks due to body weight, and has a vertical length which is about the same as that of the back. In the straightening backrest plate, a central vertical groove is formed in the central vertical direction, and a gentle inclined surface that gradually becomes thicker toward the central vertical groove is formed in the transverse section, and a predetermined position slightly lower than the center in the longitudinal section. The present invention provides a backrest plate for correction, which is characterized in that a gentle inclined surface having a maximum wall thickness is formed.

[0007]

Embodiments will be described below with reference to the illustrated embodiments. Figure 1
FIG. 2 is a front view of the orthodontic backrest plate according to the present invention.
FIG. 3 is a sectional view taken along line A-B, and FIG. In the figure, reference numeral 1 is a straightening backrest plate 1 according to the present invention. The straightening backrest plate 1 is made of a cushion material made of a firm and elastic material with almost no sink due to weight. As shown in FIG. 6, the hardness of the material of the cushion material is such that even if the weight of the backrest plate 1 for correction is applied in a normal posture, the backrest plate 1 for correction
It is necessary that the side edges of the do not touch the body.

The cushioning material used in the embodiment is Mirablock 26S (trademark) sold by JSP Corporation. The Mirablock 26S is a foamed polyethylene in-mold molded product originally developed by the same company, and unlike polystyrene foam, it has strength to withstand repeated impact use.

If the general properties of the Mirablock 26S used as a cushion material are transferred from the technical data of the company,
It has a closed cell structure, a bulk density of 0.036 grams cubic centimeter, a tensile strength of 3.2 kilograms square centimeter, an elongation rate of 54.0 percent, a compression hardness of 0.66.
It is said to be a cushioning material having a resilience of 50.0.

The orthodontic backrest plate 1 is a vertically long one having a size substantially equal to that of the back, and in the embodiment, the plate is 54 cm long and 31 cm wide. As shown in FIG. 1, a central vertical groove 3 is formed in the central vertical direction of the straightening backrest plate 1. In the embodiment, the groove has a width of less than 3 cm and a depth of 1 cm.

The surface of the straightening backrest plate 1 has a cross section (see FIG. 3).
A gradual inclined surface 2 having a gradually increasing thickness is formed toward the central longitudinal groove 3 as shown in the sectional view taken along the line BB). The boundary between the inclined surface 2 and the central longitudinal groove 3 serves as a pressing portion 4 that presses the muscles on both sides of the spine.

The inclined surface 2 on the surface side of the straightening backrest plate 1 is
It is formed in a gentle slope with a maximum thickness portion 5 at a predetermined position slightly lower than the center in the vertical section (see the sectional view taken along the line AA in FIG. 2). 7 and 8 show a state in which the backrest portion 10 of the vehicle seat 11 is used, and FIG. 8 shows a state in which the upright side of the correction backrest plate 1 is reversed. As shown in FIG. 2, 6 is the upper end portion and 7 is the lower end portion in the normal use method.

[0013]

Since the present invention is constructed as described above, it exhibits the following effects. According to the present invention, since the orthodontic backrest plate 1 is made of a cushioning material made of a solid elastic material that hardly sinks due to weight, a correct posture is secured without sinking to the seat, and sitting adversely affects health. Can be excluded.

According to the present invention, since the straightening backrest plate 1 is formed with a gentle inclined surface 2 which gradually becomes thicker toward the central longitudinal groove 3 in a cross section, the backrest plate 1 is leaned against the backrest plate 1. In the case of, the thick part pushes the central part of the back, and the force to open the chest is added as shown by the arrows in FIGS. 5 and 6,
At the same time as the posture improves, it becomes a favorable posture for the internal organs.

According to the present invention, since the predetermined thickness of the orthodontic backrest plate 1 which is slightly lower than the center in the vertical cross section is the maximum wall thickness portion 5, the waist portion is extended as shown in FIG. And is effective on the waist,
You can improve your posture with the effect of opening your chest.

According to the present invention, since the central longitudinal groove 3 is formed in the central longitudinal direction of the orthodontic backrest plate 1, that is, in the position of the spine, even if the material is solid, the spine is directly corrected. Since it does not hit the backrest plate 1, it does not hurt, and it is possible to maintain the spine in a straight state close to a standing state.

According to the present invention, both sides of the central longitudinal groove 3 serve as pressing portions 4 capable of pressing the muscles on both sides of the spine.
The pressing portion 4 can exert the acupressure effect.

The present invention is a normal use method in which the positional relationships shown in FIGS. 1 to 7 are used. However, as shown in FIG. Instead, it can be exerted vertically.

[Brief description of drawings]

FIG. 1 is a front view of a corrective backrest plate according to the present invention.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is a sectional view taken along line BB of FIG.

FIG. 4 is a perspective view of the present invention with a cover attached.

FIG. 5 is a side view showing a usage state of the present invention.

FIG. 6 is a plan view showing a usage state of the present invention.

FIG. 7 is a perspective view showing a state in which the present invention is normally used.

FIG. 8 is a perspective view showing a state in which the present invention is used upside down.

[Explanation of symbols]

 1. ． ． ． ． ． ． ． Orthopedic back plate 2. ． ． ． ． ． ． ． Inclined surface 3. ． ． ． ． ． ． ． Central vertical groove 4. ． ． ． ． ． ． ． Pressing part 5. ． ． ． ． ． ． ． Maximum wall thickness 6. ． ． ． ． ． ． ． Upper end 7. ． ． ． ． ． ． ． Bottom edge

Claims (1)

[Claims] 1. A vertically elongated orthopedic backrest plate, which is made of a firm and elastic cushioning material that hardly sinks due to body weight and has a width about the same as that of the back, with a central vertical groove formed in the central longitudinal direction. However, a gentle inclined surface having a gradually increasing wall thickness is formed toward the central vertical groove in the horizontal cross section, and a gentle inclined surface having a maximum wall thickness at a predetermined position slightly lower than the center in the vertical cross section is formed. A characteristic orthodontic backrest plate.