JP2019018613A - Seat - Google Patents

Abstract

To provide a seat which can inhibit forward displacement of a hip of a seating person, achieves good riding quality and low costs, has a simple structure, and enables a recessed state to be adjusted according to preference of the seating person.SOLUTION: A seat 1 has a cushion device 13. The cushion device 13 has: a bag body 20 enclosing a soft member 30 which can deform according to external force and on which restorative force acts; one tube 21 leading from the interior of the bag body 20 to outer air; and a valve 22 which opens or closes the tube 21. The bag body 20 is provided on a seating surface of a seat part 10. The tube 21 extends from the interior to the exterior of the seating part 10. The valve 22 is provided at a tip at the outer part side of the tube 21.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a sheet.

  For example, when the vehicle travels for a long time, the occupant may cause a front shift of the buttocks, which may cause back pain or the like. As a seat for suppressing such a front shift of the buttocks, for example, there is a seat provided with a self-expanding pneumatic seat cushion in the seat (see Patent Document 1). This seat cushion has a foam inside the bag body, and the bag body is provided with two valves, a pressure release valve for discharging air and an automatic re-expansion valve for sucking air, A tube is connected to each valve.

US Pat. No. 6,912,748

  However, in the above-mentioned seat, there is a possibility that the buttock may hit the valve of the bag body when sitting, and the seating comfort is not good. In addition, two valves and tubes for discharging air and sucking air are required, and the structure of the apparatus is complicated and expensive. Furthermore, since the cushion is automatically recessed according to the weight of the occupant when the occupant sits on the seat, the dent (shape) of the seat cannot be adjusted to the occupant's preference.

  The present application has been made in view of the above points, and is a seat capable of suppressing the front shift of the seated person's buttocks, which is comfortable to sit, has a simple apparatus configuration, is low-cost, and is preferred by the seated person. It is an object of the present invention to provide a sheet whose dent can be adjusted according to the conditions.

  As a result of intensive investigations, the present inventors have found that the above problem can be solved by installing a cushion device having a bag body including a soft member, one vent pipe, and a valve provided at the tip of the vent pipe on the seat. The inventors have found that this can be solved, and have completed the present invention.

That is, the present invention includes the following aspects.
(1) A seat having at least a seat portion and a backrest portion, a bag body including a soft member that can be deformed according to an external force and that has a restoring force when deformed, and one that passes through the inside and outside of the bag body A cushion device having a vent pipe and a valve that opens and closes the vent pipe, and a bag body of the cushion device is provided on a seating surface of the seat portion, and the vent tube is disposed inside the seat portion. The seat extends from the outside to the outside, and the valve is provided at the outer end of the vent pipe.
(2) The seat according to (1), wherein the bag body is provided directly under the surface cover of the seat portion.
(3) The sheet according to (1) or (2), wherein a recess is provided in a pad under the surface cover of the seat portion, and the bag is accommodated in the recess.
(4) The seat according to any one of (1) to (3), wherein the vent pipe protrudes from the side of the seat skeleton of the seat to the outside of the seat.

  According to the present invention, it is a seat which can control front gap of a seated person's buttocks. In addition, it is possible to provide a seat that is comfortable to sit on, has a simple apparatus configuration, is low-cost, and can adjust the dent according to the preference of the seated person.

It is explanatory drawing which shows an example of a structure of a sheet | seat. It is a perspective view which shows an example of a structure of a cushion apparatus. It is explanatory drawing which shows the XX cross section of the seat part which installed the bag. It is explanatory drawing which shows an example of a valve | bulb. It is explanatory drawing which shows the cross section of the seat part when a seated person seated.

  The present invention will be specifically described below. In addition, the following embodiment is an illustration for demonstrating this invention, and this invention is not limited only to the embodiment. The same reference numerals are assigned to the same elements, and duplicate descriptions are omitted. In the drawings, positional relationships such as up, down, left, and right are based on the positional relationships shown in the drawings unless otherwise specified. Furthermore, the dimensional ratios in the drawings are not limited to the illustrated ratios.

  FIG. 1 is a schematic diagram illustrating an example of a configuration of a sheet 1 according to the present embodiment. The seat 1 includes, for example, a seat part 10, a backrest part 11, a headrest 12, and a cushion device 13 installed on the seat part 10.

  For example, as shown in FIGS. 1 and 2, the cushion device 13 includes a bag body 20, a tube 21 as a vent pipe, and a valve 22.

  The bag body 20 is made of, for example, a resin and has a square shape, and has airtightness. The bag body 20 includes a soft member 30 that can be deformed according to an external force and has a restoring force when deformed. The soft member 30 is formed in a square shape, for example. The soft member 30 is made of urethane, for example. The material of the soft member 30 may be other as long as it can be deformed according to an external force and a restoring force works when deformed. The size of the soft member 30 is preferably about 300 mm on one side, for example.

  The bag body 20 is provided, for example, in the vicinity of the seating surface of the seated person on the seating surface, for example, the center in the left-right direction of the seat 10 and on the rear side of the center in the front-rear direction of the seat 10. For example, as shown in FIG. 3, a recessed portion 50 is formed in a pad 41 immediately below the surface cover 40 where the collar portion of the seat portion 10 is to be located, and the bag body 20 is accommodated in the recessed portion 50.

  The tube 21 shown in FIGS. 1 and 2 is made of, for example, resin, and communicates from the inside of the bag body 20 to the outside. For example, the tube 21 passes through the pad 41 of the seat portion 10 and protrudes from the resin side plate 42 of the seat skeleton of the seat portion 10 to the outside of the seat portion 10, and the valve 22 is installed at the tip thereof.

  The valve 22 can be manually opened and closed, for example. For example, as shown in FIG. 4, the valve 22 includes a main body 60 connected to an end portion of the tube 21 and a pushing portion 61 protruding from the main body 60 to the outside in the axial direction of the tube 21. As shown in FIG. 4A, the pushing portion 61 is urged outward, for example, protruding from the main body 60. As shown in FIG. 4B, by pushing the pushing portion 61, a vent hole 62 is opened on the side surface of the main body 60, and the inside of the tube 21 communicates with the outside air through the vent hole 62. By releasing the pushing portion 61, the vent hole 62 is closed, and the inside of the tube 21 and the outside air are shut off. The method, shape, etc. of the valve 22 are not limited to this.

  Next, the operation of the cushion device 13 for the seat 1 will be described. When seated on the seat 1, the seated person holds the valve 22 at the tip of the tube 21 with his hand and manually pushes the pushing portion 61 of the valve 22 as shown in FIG. The inside of the bag 20 is communicated with the outside air. When the seated person sits on the seat portion 10 of the seat 1 in this state, the collar portion A presses the bag body 20 as shown in FIG. 5, and the soft member 30 in the bag body 20 is deformed along the shape of the collar portion A. . At this time, the portion of the sciatic nodule B of the buttocks A is particularly recessed, and the shift of the buttocks A is restricted. Along with the deformation of the soft member 30, the air in the bag body 20 escapes from the vent hole 62 of the valve 22 through the tube 21. When the air in the bag body 20 is completely removed, the pushing portion 61 of the valve 22 is released and the tube 21 is closed. Thereby, the bag body 20 is sealed in a vacuum state (or a low pressure state), and the shape and hardness of the soft member 30 are maintained. When the seat 21 rises and the tube 21 is opened, outside air enters the bag body 20 and the soft member 30 is restored to its original shape. When adjusting the degree of depression of the bag body 20 (soft member 30), the pushing portion 61 of the valve 22 is released when the seated person sits on the seat portion 10 and the air in the bag body 20 is released. The tube 21 is closed. Thereby, the dent of the bag body 20 is hold | maintained in a desired position, and the dent condition of the bag body 20 can be adjusted.

  According to the present embodiment, when the seated person sits on the seat portion 10, the soft member 30 is deformed and recessed according to the pressure of the buttocks A, so that the displacement of the buttocks A is suppressed. Further, since the valve 22 is provided at the tip of the tube 21 outside the seat portion 10, it is not necessary to provide a valve on the bag body, and the collar portion does not hit the valve when seated. Therefore, the seat 1 is comfortable to sit on. Furthermore, since the valve 22 is provided in one tube 21, the low-cost cushion device 13 can be realized with a simple configuration. Further, since the valve 22 is located at the tip of the tube 21 outside the seat portion 10, the valve 22 can be manually operated, and the dent of the bag body 20 can be adjusted according to the preference of the seated person. Moreover, since the soft member 30 is included in the bag body 20 of the cushion device 13, it is possible to reliably cope with differences in the sciatic tubercle position and the buttock shape of each seated person.

  Since the bag body 20 is disposed immediately below the surface cover 40 of the seat portion 10, the soft member 30 of the bag body 20 can easily follow the pressure of the seated person's buttocks A. Therefore, the front shift | offset | difference of seated person's buttocks A can be suppressed appropriately. Moreover, since a seated person does not touch the bag body 20 directly, it can suppress that the bag body 20 becomes dirty or damaged by long-term use.

  Since the recessed part 50 is provided in the pad 41 under the surface cover 40 of the seat part 10, and the bag body 20 is accommodated in the recessed part 50, the bag body 20 can be installed easily.

  Since the tube 21 protrudes from the side plate 42 of the seat skeleton of the seat portion 10 to the outside of the seat portion 10, it does not interfere with the seated person.

  The preferred embodiments of the present invention have been described above with reference to the accompanying drawings, but the present invention is not limited to such examples. It is obvious for those skilled in the art that various modifications or modifications can be conceived within the scope of the idea described in the claims, and these naturally belong to the technical scope of the present invention. It is understood.

  For example, the configuration of the cushion device 13 described in the above embodiment is not limited to this. Moreover, the whole structure of the sheet | seat 1 is not restricted to this. The seat 1 may be applied to any seat of a vehicle such as a driver seat of a vehicle, a passenger seat of a vehicle, and a rear seat. Further, the seat 1 is not limited to a vehicle seat, and may be applied to a seat for other purposes.

  The present invention is a seat capable of suppressing the frontal displacement of the seated person's buttocks, having a good seating comfort, a low cost with a simple device configuration, and capable of adjusting the dent according to the seated person's preference. Useful in providing.

DESCRIPTION OF SYMBOLS 1 Seat 10 Seat part 11 Backrest part 13 Cushion apparatus 20 Bag body 21 Tube 22 Valve 30 Soft member 40 Surface cover 50 Recessed part A Buttocks B Sciatic tubercle

Claims (4)

A seat having at least a seat and a backrest,
A cushion having a bag body that includes a soft member that can be deformed according to an external force and has a restoring force when deformed, a single vent pipe that passes through the inside and outside of the bag body, and a valve that opens and closes the vent pipe. Have the equipment,
A bag body of the cushion device is provided on a seating surface of the seat;
The vent pipe extends from the inside to the outside of the seat portion, and the valve is provided at a front end of the vent pipe.   The seat according to claim 1, wherein the bag body is provided directly under the surface cover of the seat portion. A recess is provided in the pad under the surface cover of the seat,
The sheet according to claim 1 or 2, wherein the bag is housed in the recess.   The seat according to any one of claims 1 to 3, wherein the vent pipe protrudes from the side of the seat skeleton of the seat to the outside of the seat.