JPH0428431Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a vehicle seat such as an automobile, and particularly to a vehicle seat having a structure that can eliminate squeaks and the like between a seat frame and a seat pad.

[Prior Art] This type of vehicle seat has a seat pad made of a foam such as urethane foam placed on a seat frame equipped with a cushion spring, and then covered with a skin material from the outside to cover the seat pad with the skin material. fixed on the frame. However, due to their flexibility, these seat pads cannot be completely fixed to the seat frame, and are fixed in a state where they can move slightly relative to the seat frame to an extent that does not pose any practical problem.

[Problem that the invention aims to solve] Therefore, when a person moves and shifts their weight while sitting on the seat, or when getting on and off the seat, or due to vibrations while driving, the seat pad may be affected by the seat frame and cushion spring. will move slightly while rubbing, and at this time an abnormal sound (rubbing sound) will be made.
There was a problem in which this occurred, causing discomfort to the passengers.

The present invention was developed in view of the above problems, and its purpose is to create a structure that can prevent abnormal noises such as squeaks from occurring at the contact area between the seat pad and the seat frame. The purpose of the present invention is to provide a vehicle seat with a high quality.

[Means for Solving the Problems] In order to achieve the above object, the present invention has a foam-molded seat pad with a flexible sheet-like supporter on the back side, and a part of the seat frame side on the back side. The vehicle seat is rolled up and attached, and the supporter is provided with an end portion extending from the outer peripheral end surface of the seat pad, and the end portion is folded back along the back surface of the seat pad so that the seat pad At the same time, a part of the seat frame is wrapped around and supported.

[Function] According to the above configuration, the seat pad and the seat frame are brought into abutting engagement with each other via the end portion of the flexible supporter folded back on the back side of the seat pad, and this abutting engagement causes the seat pad and the seat frame to come into contact with each other. are combined with each other. Since the frictional resistance between the end portion and the seat frame is reduced due to the presence of the end portion, when an external force is applied to move the seat pad and the seat frame relative to each other, the frictional resistance between the two ends is reduced. This allows for smooth relative movement. This makes it possible to prevent abnormal noises from occurring between the seat pad and the seat frame without having to separately prepare special parts that would make parts management troublesome and interpose them between the seat pad and the seat frame. can. Further, since the end portion is not integrated with the seat pad during foam molding of the seat pad, the end portion is not impregnated with a portion of the foamed resin. This ensures a smooth surface at all times and also suppresses the occurrence of abnormal noises. Also, when folding back the terminal part, we will remove the burrs that occur on the outer peripheral edge of the seat pad.
Since it can be processed by folding it inward together with the end portion, there is no need for deburring work after sheet pad molding.

[Example] Hereinafter, an example of the present invention will be described in detail using the drawings.

Fig. 1 is an external perspective view showing an example of a vehicle seat to which the present invention is applied, and Fig. 2 is a -
FIG. 3 is a schematic vertical cross-sectional view taken along a line.

In the figure, a seat 1 has a general configuration including a seat cushion part 2, a seat back part 3, a head rest 4 attached to the upper part of the seat back part 3, and the like.

Further, the seat back portion 3 is connected to a seat frame 5 and a seat pad 6, as shown in FIG.
, a skin material 7, a cushion spring (S spring) 8, and the like.

Furthermore, as shown in FIG. 3, the seat frame 5 is made by bending a steel pipe material into a substantially rectangular shape. The cushion springs are fixed to a seat frame (not shown) on the side of the seat cushion part 2 via a reclining device (not shown), and are connected to the plurality of cushion springs via a bracket 20 between the left and right side frames of the seat frame 5. 8 is installed.

Next, the seat pad 6 is foam-molded into a predetermined shape using a foamed resin material such as foamed urethane resin, and is integrated with the supporter 10 during this foam-molding. The seat pad 6 is provided with a protective wall 6b for holding the seat frame 5 in a rolled-up state on the back side when the seat pad 6 is attached to the seat frame 5.
It is formed to correspond to the rectangular shape of the seat frame 5 during molding. A circumferential groove 9 is formed on the back side of the seat pad 6 by the protective wall 6b and the main body portion 6a.

On the other hand, the supporter 10 integrated with the seat pad 6 includes a rectangular main body portion 10a,
It integrally has four terminal parts 10b extending from the four sides of the main body part 10a, and is made of a flexible coarse blanket or the like. Then, before the seat pad 6 is foam-molded, a mold (not shown) for the seat pad 6 is formed.
It is placed inside the seat pad 6 and set at a position corresponding to the back surface of the seat pad 6. Also, at this time, the terminal section 10b
is placed in a state where it is led out from inside the mold to prevent the undiluted solution of the sheet pad 6 from adhering to the end portion 10b. Next, when the foamed resin material is filled and foamed into the mold in this state, the main body portion 10a of the supporter 10 is foam-molded with a portion of the foamed resin material impregnated, and the supporter 1
0 and the seat pad 6 are integrated. As a result, as shown in FIGS. 3 and 5, the seat pad 6
The entire back surface is covered with the main body part 10a, and the four terminal parts 10b are free, and the outer peripheral end surface 6 on the back side is
It is derived from c.

Then, the seat pad 6 integrated with the supporter 10 in this way is attached to the seat frame 5.
3 and 5, the end portion 10b extending from the outer peripheral end surface 6c on the back surface of the seat pad 6 is folded back along the back surface of the seat pad 6. At the same time, the seat frame 5 is inserted into the circumferential groove 9 with the end portion 10b being rolled up into the circumferential groove 9. Then, the seat pad 6 and the seat frame 5 are engaged with each other by the insertion engagement between the circumferential groove 9 and the seat frame 5. After this engagement, the seat pad 6
and the seat frame 5 are covered with a skin material 7 and hidden from the outside. Further, with this engagement, the main body portion 10a and the terminal portion 10b of the supporter 10 are placed in a stacked state between the seat frame 5 and the seat pad 6, as shown in FIGS. 2 and 4. Then, as described above, the terminal portion 1 that contacts the seat frame 5
0b is molded in such a way that foamed resin or the like does not adhere to the surface, so the surface in contact with the seat frame 5 is always smooth. As a result, when an external force is applied between the seat pad 6 and the seat frame 5 in the portion of the circumferential groove 9 to rotate the seat pad 6 and the seat frame 5, this end portion 10
A smooth sliding action can be obtained between b and the seat frame 5. Therefore, the seat pad 6 and the seat frame 5 can be easily connected to each other without creating a squeak sound or the like, without having to prepare another member to improve the slippage and interpose it between the seat pad 6 and the seat frame 5. relative movement between the two can be performed smoothly. As a result, it is possible to reliably suppress the occurrence of abnormal noises such as squeaks and improve seating comfort.

Furthermore, by folding back the end portion 10b when engaging the seat pad 6 and the seat frame 5, burrs formed on the outer peripheral end surface 6c during foam molding can be rolled inward together with the end portion 10b and treated at the same time. can. Therefore, there is no need to perform a separate burr treatment operation, which simplifies the work after molding.

In addition, in the above embodiment, the structure applied to the seat back part 3 is disclosed, but the structure applied to the seat cushion part 2 is
It can also be applied in the same way.

[Effects of the invention] As explained above, according to the vehicle seat according to the invention, the seat pad and the seat frame are brought into abutting engagement through the end portion of the flexible supporter folded back on the back side of the seat pad. is,
This abutting engagement connects the seat pad and the seat frame to each other. Since the frictional resistance between the end portion and the seat frame is reduced due to the presence of the end portion, when an external force is applied to move the seat pad and the seat frame relative to each other, the frictional resistance between the two ends is reduced. This allows for smooth relative movement. This makes it possible to prevent abnormal noises from occurring between the seat pad and the seat frame without having to separately prepare special parts that would make parts management troublesome and interpose them between the seat pad and the seat frame. can. Further, since the end portion is not integrated with the seat pad during foam molding of the seat pad, the end portion is not impregnated with a portion of the foamed resin. As a result, a smooth surface is always obtained, and the occurrence of abnormal noises can be suppressed. In addition, since the burrs generated on the outer peripheral end surface of the seat pad when folding back the terminal portion can be removed by folding back inward together with the terminal portion, there is no need for deburring work after molding the sheet pad. Thereby, workability can be improved.

[Brief explanation of the drawing]

Fig. 1 is an external perspective view of a vehicle seat to which the present invention is applied, Fig. 2 is a vertical sectional view taken along the - line in Fig. 1, Fig. 3 is an exploded perspective view of the main parts of the same seat, and Fig. 4 is an exploded perspective view of the main parts of the same seat.
This figure is a perspective view of the main parts of the same seat as shown in the middle of assembly, and FIG. 5 is an enlarged schematic sectional view taken along the line - in FIG. 3. 1... Seat, 5... Seat frame, 6...
Seat pad, 6c...outer peripheral end surface, 9...outer peripheral groove, 10...supporter, 10b...terminal part.

Claims (1)

[Scope of utility model registration request] A vehicle seat in which a foam-molded seat pad with a flexible sheet-like supporter arranged on the back side is attached by wrapping a part of the seat frame side into the back side, and the seat pad is attached to the supporter. A vehicle characterized in that a terminal portion is provided extending from an outer peripheral end surface, and the terminal portion is folded back along the back surface of the seat pad so as to wrap around and support a part of the seat frame together with the seat pad. Sheet for use.