JP5784946B2 - Vehicle seat - Google Patents

Description

  The present invention includes a seat back having a frame and a pad attached to the frame, and a cover material covering at least a back portion of the seat back, and blows air to the seat back from the back side of the pad to the front side. The present invention relates to a vehicle seat provided with a unit.

As a technique related to a conventional vehicle seat, for example, there is one disclosed in Patent Document 1.
This technique is intended to ensure a sufficient amount of air flow and reduce discomfort due to noise in an air conditioning seat device for a vehicle. Specifically, a blower unit that blows air inside the cushion member is provided on the back side of the cushion member that cushions the occupant, and a plate-shaped protection is provided while maintaining a certain gap on the back side of the blower unit. The members are arranged to face each other. Thus, even when the occupant is seated and the distance between the blower unit and the protection member varies somewhat, the gap between the blower unit and the protection member is appropriately maintained, and the air suction function is prevented from being hindered. In addition, by appropriately maintaining the distance between the blower unit and the protection member, the noise of the airflow is not excessive, and the passenger is prevented from feeling uncomfortable.
In this technique, a member having a size capable of covering the entire rear surface of the sheet and having a hole for taking in air is used as the protective member.

On the other hand, as a technique for disclosing a technique related to a member on the rear surface side of a vehicle seat, there is one disclosed in Patent Document 2, for example.
Although this technique is not a seat provided with a blower unit, it is intended to simplify the covering operation in the seat back. Specifically, it includes a backboard formed of a plate member having elasticity, and a skin material affixed to the backboard. It is inserted and fixed to the mounting part of the frame. This back boat is not a large one that covers the entire area of the seat back, but is a member that covers only the lower portion from the central portion of the seat back. No skin material is affixed to the insertion part of the backboard, and the skin material itself is configured to cover the entire rear surface of the sheet.
In addition, when the occupant strongly pushes the seat pad backward, this backboard comes into contact with the pad support spring pushed backward, and the backboard itself bends to absorb the load behind it. It has a structure to do.

JP 2004-224108 A JP 2006-320611 A

In a sheet provided with a blower unit, the blower function is the most important. In that respect, the technique of Patent Document 1 is considered to be appropriate in that the distance between the blower unit and the protection member can be reliably ensured. However, it is not necessarily excellent in design such as providing a hole portion for taking in air, and processing costs for that are also required.
Further, the protective member is formed of a resin material or the like so as to cover almost the entire rear surface of the seat back, and since the size is large, it cannot be said that it is sufficiently reasonable from the viewpoint of economy.

On the other hand, although the technology of Patent Document 2 is configured so that the size of the backboard is compact, the backboat is configured to be slidable with respect to the seat frame so as to be able to receive and deform the occupant's load. is there. Therefore, the mounting position with respect to the seat frame becomes unstable, and it is unclear whether or not the air circulation space can be appropriately secured even if the backboard is immediately applied to the seat provided with the blower unit.
As described above, in the conventional known technology described above, there is still room for improvement in order to more rationally configure the sheet provided with the blower unit.

  An object of the present invention is to provide a vehicle seat that exhibits a sufficient air blowing function of a blower unit and is excellent in economy and design.

A first characteristic configuration of a vehicle seat according to the present invention includes: a seat back having a frame and a pad attached to the frame; and a cover material covering at least a back portion of the seat back, wherein the seat back And an air blower unit for blowing air from the back side of the pad to the front side, and is a region excluding a part of the back portion of the seat back in the rear view of the seat back, and at least a part of the air blow unit the cover member overlapping, Ri Oh by fixedly supported on the frame in a state of being spaced rearwardly from said blower unit inside of the table covering member, the covering member is configured in an arch shape protruding rearward in In the point.

  According to this configuration, since the covering member is fixedly supported on the frame in a state of being separated rearward from the air blowing unit inside the cover material, for example, even if an occupant or the like comes into contact with the back portion of the seat back, the covering member is covered. The member does not come close to the seat back, and a sufficient space can be secured between the blower unit and the cover member or cover material. Therefore, a sufficient amount of air taken from the back side of the blower unit can be secured.

Further, since the cover member that overlaps at least a part of the area of the blower unit when viewed from the back of the seat back is fixedly supported on the frame in a state of being separated rearward from the blower unit inside the cover member, for example, an occupant The cover member protects the blower unit when etc. contact the back part of the seat back. Since the covering member is configured in an arch shape that protrudes rearward, the strength against the external force from the rear of the covering member is improved, and the covering member is hardly deformed.

  In addition, since the cover member overlapping the region excluding a part of the back portion of the seat back in the rear view of the seat back is fixedly supported on the frame in a state of being separated rearward from the blower unit inside the cover material, When the cover material is attached to the seat back, the cover material is stretched behind the blower unit by the cover member to constitute the surface design of the cover material. Therefore, the shape of the blower unit is not raised from the cover material.

  As described above, in the case of the vehicle seat of the present configuration, the cover member can be made more compact than the configuration in which the cover member covers almost the entire region of the back portion of the seat back.

It is a disassembled perspective view which shows the vehicle seat of this invention. It is a cross-sectional view showing a vehicle seat of the present invention. It is a longitudinal cross-sectional view which shows the vehicle seat of this invention. It is a perspective view which shows the state which removed the cover material and the pad from the vehicle seat in another embodiment.

Hereinafter, the vehicle seat according to the present invention will be described.
As shown in FIGS. 1 to 3, the vehicle seat has a seat portion 1 that supports the occupant's buttocks, a seat back 2 that supports the upper body of the occupant, and a breathable bag that covers the seat back 2. The fabric 11 (an example of a cover material).

  The seat portion 1 includes a seat cushion frame 3 and a seat side pad (not shown) attached to the seat cushion frame 3.

  The seat cushion frame 3 is configured to be movable in the front-rear direction along the left and right rails 4, the left and right seat frames 5, the front frame 6 that connects the front ends of the both seat frames 5, and both the seat frames 5. The front support frame 7 for connecting the front sides of the two and the rear support frame 8 for connecting the rear sides of the seat frames 5 are provided. A substantially semicircular shaft support portion 9 that pivotally supports the seat back 2 is formed on the upper rear side of both the seat frames 5. A reclining mechanism 10 that adjusts the angle of the seat back 2 is mounted on the outer side of the one shaft support 9.

  The seat back 2 includes a seat back frame 21 and a pad 22 on the seat back side attached to the seat back frame 21.

  The seat back frame 21 has a lower end portion pivotally connected to the shaft support portion 9 via a reclining shaft X, and includes a left and right vertical frame 23 and an upper frame 24 that connects the upper ends of both the vertical frames 23. ing. A wavy spring 25 that elastically supports the pad 22 on the seat back side from the back side is stretched between the vertical frames 23. A plurality (three in this embodiment) of springs 25 are provided side by side in the vertical direction. A blower unit SU is attached to the back side of the spring 25. The position of the blower unit SU is set at the upper and lower and left and right central portions of the seat back frame 21 when viewed from the back of the seat back.

  The pad 22 on the seat back side includes a front wall portion 22a, both side wall portions 22b extending from the left and right ends of the front wall portion 22a to the back side, and an upper portion extending from the upper end of the front wall portion 22a to the back side. The wall part 22c is provided and it is comprised in the rectangular plate shape which a back side and a lower side open. When the pad 22 is inserted into the seat back frame 21, both the vertical frames 23 engage with the groove portions 22d formed in the both side wall portions 22b. Thereby, the pad 22 can be attached to the seat back frame 21. A plurality of vent holes 22e are formed in the upper and lower and left and right central portions of the front wall portion 22a. Thereby, as shown by the arrows in FIGS. 2 and 3, the air on the back side of the pad 22 is blown to the front side of the pad 22 through the vent hole 22e by the operation of the blower unit SU. Moreover, since the cover material is the fabric 11 having air permeability, air can be smoothly flowed from the back side of the seat back 2 through the fabric 11 to the blower unit SU. In this case, it is not necessary to provide a special air inlet in the cover material.

  In a state where the seat back 2 is viewed from the back side, a resin covering member C is disposed in a region excluding the upper side and the lower side of the back portion of the seat back 2 and overlapping the entire blower unit SU, and the inner side of the covering member C. In FIG. 1, the seat back frame 21 is fixedly supported in a state of being separated rearward from the blower unit SU.

  Specifically, the cover member C is configured in a laterally-shaped band plate shape, and includes a protection portion 26 that is curved to the back side, and substantially L-shaped attachment portions 27 that are formed at the left and right ends of the protection portion 26. ing. Bent portions 26 a are formed on the left and right ends of the protective portion 26. The cover member C is coupled across the left and right vertical frames 23 by bolting the mounting portion 27 to the upper and lower intermediate portions of the left and right vertical frames 23 in a state where the mounting portion 27 and the vertical frame 23 are in close contact with each other.

  Thereby, for example, even if an occupant or the like contacts a portion of the back surface portion of the seat back 2 that is close to the blower unit SU, the blower unit SU is protected by the covering member C. Further, the distance between the blower unit SU and the covering member C is reliably maintained. As a result, the fabric 11 is not sucked by the blower unit SU, and a sufficient intake amount of air from the back side of the blower unit SU can be secured. Examples of the material of the fabric 11 include a fabric that has air permeability and is difficult to see through the blower unit SU.

  The covering member C is not provided on the upper side and the lower side of the back portion of the seat back 2 when viewed from the back direction of the seat back 2, but when the fabric 11 is attached to the seat back 2, the covering member C blows air. The fabric 11 is stretched behind the unit SU to form a surface design of the fabric 11. Thus, although the size of the covering member C is smaller than the seat back 2, the covering member C is provided apart from the blower unit SU, and the fabric 11 is covered on the outside thereof, so the shape of the blower unit SU is It will not be raised from the fabric 11. Further, as in Patent Document 1, the covering member C can be configured to be extremely compact as compared with a configuration in which the covering member C covers almost the entire area of the back surface portion of the seat back 2.

  Further, since the covering member C is configured in an arch shape that protrudes backward, the strength of the covering member C against the external force from the rear is improved, and the covering member C is difficult to deform. In addition, it becomes easy to secure a space between the blower unit SU and the cover member C.

  If the cover member C is fixedly supported on the seat back frame 21 as in this configuration, the blower unit SU is covered even if the blower unit SU moves in the front-rear direction when the occupant leans on the seatback 2. Since it does not contact the member C, the shape of the covering member C does not rise.

[Another embodiment]
(1) You may comprise so that the covering member C may overlap with the one part area | region of ventilation unit SU in the back surface direction view of the seat back 2. FIG. For example, as shown in FIG. 4, the covering member C may be formed of a metal rod-shaped member. Even in this case, the protection function of the blower unit SU can be secured. In such a case, in order to enhance the protection function of the blower unit SU, a box-shaped cover member 31 covering the blower unit SU is attached to the spring 25 in addition to the cover member C as shown in FIG. May be. As a method of attaching the cover member 31, a method of providing an engaging claw at the corner of the cover member 31 and fixing the engaging claw to the spring 25 can be used.

(2) A lower frame for connecting the lower sides of the vertical frames 23 is provided, and the covering member C configured as a strip plate or the covering member C configured as a rod-shaped member extends over the upper frame 24 and the lower frame. It may be fixedly supported in the vertical direction. Further, the covering member C may be cantilevered on one frame in the seat back frame 21.

(3) You may provide the rib which protrudes in the front side at the upper-lower-end edge of the covering member C shown in FIG. Thereby, the rigidity of the covering member C improves and the covering member C becomes difficult to deform | transform. In addition, it is possible to prevent the edge of the covering member C from contacting the fabric 11 and the fabric 11 from being worn.

(4) The surface covering material is not limited to the fabric 11, and various members such as artificial leather and resin surface can be used.

(5) In order to fix the covering member C to both the vertical frames 23, instead of the structure of fixing with the bolts, engaging portions are provided at both ends of the covering member C, and the engaging portions are engaged with the both vertical frames 23. You may let them.

  The present invention is applicable to various vehicles such as passenger cars, buses, and trucks.

2 Seat back 11 Cover material 21 Frame 22 Pad SU Blower unit C Cover member

Claims (1)

A seat back having a frame and a pad attached to the frame;
A cover material covering at least the back portion of the seat back, and
The seat back includes a blower unit that blows air from the back side to the front side of the pad,
A cover member that is an area excluding a part of the back surface portion of the seat back in the rear direction view of the seat back and overlaps at least a partial area of the air blow unit, from the air blow unit inside the cover material. Ri Oh and in a state spaced rearwardly is fixedly supported on the frame, the cover member is a vehicle seat that is configured in an arch shape protruding backwards.

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