JPH04183413A - Seat cushion - Google Patents

Abstract

PURPOSE:To improve the slide condition of a body along a cushion cover in seated posture, and prevent the deformation of a body skin due to a nipping phenomenon between the body skin and muscle by using a cover pad with a flocked fabric having the predetermined length of numerous fabric projections at least for the side of the surface skin cloth of the cover pad constituting the cushion cover. CONSTITUTION:A cushion cover 20 comprises a cover pad 21 of foamed urethane, a surface skin cloth of woven cloth and a back foundation 23. In addition, the cover pad 21 has a flocked fabric with the predetermined length of numerous fabrics 24 projected from both sides thereof. As a result, the cover pad 21, the surface skin cloth 22 and the back foundation 23 are separated from one another via the fabrics 24. In addition, the fabrics 24 are resistively bent and deformed back and forth, or right and left, due to a downward load. Consequently, when a seated person tries to move his/her body in seated posture, the surface skin cloth 22 moves integrally with the body. According to the aforesaid construction, the skin of the body becomes free from deformation due to a nipping phenomenon between the skin and muscle. Also, it is possible to prevent a hindrance to a blood flow due to local body deformation and a partial pressure increase.

Description

[Detailed description of the invention]

[Industrial application field] The present invention relates to a seat cushion that constitutes a seat.

[Prior art]

As a type of seat cushion and seat 1 that constitute a seat such as a vehicle seat, the crank body is made up of a crank pad supported on a spring arranged on a cushion cover pad, and the cover pad is used as a backing fabric. There is a seat cushion that is covered with a cushion cover that is covered with a skin cloth. In this type of seat cushion/W, the sitting comfort and feeling are influenced by the cranlon body and the cushion cover, but the cushion cover has a large influence on the sitting feeling in particular, and if the contact pressure is not appropriate, it can lead to fatigue.

[Problem to be solved by the invention]

By the way, in order to suppress fatigue as much as possible in a seated position, it is important to move your body within an appropriate time to promote blood circulation. It is necessary to eliminate local pressure on the body and to be able to slide the body against the surface of the cover without resistance. However, in the above-mentioned type of seat cushion, due to the structure of the cushion pad, the outer skin fabric, and the back base fabric, slippage between these three members is extremely poor, and when the body moves due to the load when sitting, the skin of the body There is a risk that a pinching phenomenon may occur between the skin and the muscles, deforming the skin, locally deforming the body, increasing pressure locally, inhibiting blood flow, and increasing fatigue. Therefore, an object of the present invention is to eliminate the above-mentioned obstruction of blood flow by preventing the body from sliding against the cover in a sitting position.

[Means to solve problems] In the seat cushion of the above type, the present invention employs a flocked cover pad in which numerous fibers protrude for a predetermined length from at least the side surface of the outer fabric of the cover pad as the cover pad constituting the soft cover. This is a characteristic feature. [Actions and effects of the invention]

In the 7-Tokutsunyeon having such a structure, the cover pad and the outer fabric are reliably separated by the numerous fibers protruding from one surface of the cover pad, and the elastic bending action of the fibers in the longitudinal and lateral directions It is possible for the skin fabric to move with very little resistance against one side of the cover pad. For this reason, even when a large load is applied to the shoes/masks cover when sitting, the body moves relative to the cover pad almost as one with the outer fabric, and there is no gap between the skin and muscles of the body, as in the past. The pinching phenomenon does not occur and deform the skin, and therefore there is no risk of locally deforming the body and increasing pressure locally, obstructing blood flow, and compared to conventional methods, the body It is possible to move the body without resistance and relieve fatigue even more moderately.

【Example】

An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 shows approximately half of a seat cushion according to an embodiment of the present invention. The vehicle seat comprises a seat for a vehicle, and the seat is composed of a body 10 and a cover 20. The main body includes a frame 11, a spring 12, and a base 13. The spring 12 is disposed on the cushion frame 11, and a cushion pad 13 is supported on the spring 12. The spring 12 is integrally covered with the spring 12 by a skin 14. has been done. As shown in FIG. 2, the R/7 link cover 2o includes a cover pad 21, an outer fabric 22, and a back base fabric 23, and the cover pad 21 is covered with the outer fabric 22 and the back base fabric 23 on the front and back sides. The cushion cover 20 is divided into a plurality of parts, and each divided cover pad part 20a,
20b are connected to each other by hanging means as shown in FIG. 1, and are fixed to the shoelace body 10,
And the shoelace main body l at the side cover pad part 20b
It is fixed at O. However, in the cushioning force bar 20, as shown in FIG. 2 as a representative example of the cover pad portion 20a, a cover pad 21 made of urethane foam and an outer cloth 2 made of woven cloth are used.
2 and a back base fabric 23, the cover pad 21 is flocked as shown in FIG. 3, and countless fibers 24 protrude from both the front and back surfaces by a predetermined length. The cover pad 21, the outer fabric 22, and the back fabric 23 are sewn together on both sides and are integrated, and countless fibers 24 are formed between each surface of the cover pad 21, the outer fabric 22, and the back fabric 23. A protrusion is present. Therefore, such a seat cushion 20
In this case, the cover pad 21, the outer skin cloth 22, and the back base cloth 23 are separated by fibers 24, and the fibers 24 are separated from each other by fibers 24.
4 elastically bends and deforms in the front-rear or left-right direction due to a load from above. In a seat equipped with the seat cushion 2o having such a configuration, when a passenger is seated, a large load is applied from above, and both the cushion body 10 and the seat cushion 20 elastically bend to support the seated person. At this time, in the cover pad 21 constituting the seat cushion 2o, the fibers 24 elastically bend and deform as shown in FIG. 4, increasing the elasticity of the seat cushion 92°, and
The fibers 24 return to their original state when the action of the load is removed. Therefore, the relationship between the load and the amount of deflection in this notebook is as shown in the graph shown by the solid line in Figure 5, which shows better deflection performance and deflection recovery performance than the conventional relationship graph shown by the two-dot chain line. Performance has improved significantly. In addition, in this seat, since countless fibers 24 are interposed between the cover pad 21 and the outer cloth 22, if the seated person tries to move his or her body while in the seated position, the outer cloth 22 will be moved along with the body. In order to move, the twisting phenomenon that occurs between the skin and muscles of the body does not deform the skin as in the past, and therefore the body is locally deformed and pressure is increased locally. There is no risk of obstructing blood flow, and compared to the past, it is possible to move the body with less resistance and relieve fatigue more appropriately. 6 and 7 show a method of flocking the seat cushion glue and the cover pad 21 constituting the John cover 20. Cover pad with flocked hair. Pad 21 is a new product, and the main processes for forming the cover pad are divided into a flocking process and a shaving process. Each process is located between both winding drums 31aJ1b, and the flocking process is equipped with a needle device 32, a guide roller 33, and a fiber hold belt 34. While the original fabric 21a of the cover pad 21 and the fiber web 24a placed thereon are fed and wound onto the second winding drum 31b, the needle 32a moves up and down in conjunction with the drive of the shield belt 34. As shown in FIG. 7, the fibers 24 are penetrated into the cover pad 21 and flocked. At this time, the needle 32a is inserted between the hold legs 34a of the hold belt 34, and the lower ends of the fibers 24 are left between the legs 34a. let On the other hand, the shaping process includes a shaping device 35 and a guide roller 36, and a second
The protrusions on both sides of the fibers 24 of the flocked cover pad 21 that are wound around the winding drum 31b are connected to the winding band 3.
5a to make the protruding length of the fiber a predetermined length. Thereafter, the flocked cover bud 21 is wound up on the second winding drum 31b, cut as appropriate, and used as a material for the sheet woven fabric 20. In addition, in the /-Tokunoshi Dan 20, the load-deflection curve shown in FIG. 5 can be changed to a desired value by selecting the characteristics of the fiber 24, such as appropriate fiber length, denier, Young's modulus, etc. can do.

[Brief explanation of drawings]

Fig. 1 is a partial longitudinal cross-sectional view of a seat cover according to an embodiment of the present invention, Fig. 2 is a partial longitudinal cross-sectional view of a cover constituting the seat cover, and Fig. 3 is the same. FIG. 4 is a partially enlarged vertical cross-sectional view of the cover, and FIG. 4 is a partial vertical cross-sectional view showing the state of the cover when a load is applied from above. FIG. FIG. 6 is a process diagram of flocking the cover pad, and FIG. 7 is a partially enlarged longitudinal cross-sectional view of the flocking process showing the state at the time of flocking. Explanation of symbols 10...Cushion body, 11...Kunyong frame, 12...Spring, 13...Kunwon panel, 20...Kunyong cover, 21...Cover pad, 22... Outer fabric, 23...Back base fabric, 24.
・□・Fiber, 31a, 31b... Winding drum, 32・
...Needle device, 33J6...Guide roller, 34
...Hold belt, 3S...sheving device.

Claims (1)

[Claims] A seat cushion in which a cushion body comprising a cushion pad supported on a spring disposed on a cushion frame is covered with a cushion cover formed by covering the cover pad with a back base fabric and an outer fabric, wherein the cushion cover 1. A seat cushion comprising a flocked cover pad in which numerous fibers protrude for a predetermined length from at least the side surface of the outer skin fabric of the cover pad.