JP2011056896A - Seat structure for vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a seat structure for a vehicle having a lightweight means capable of sufficiently enduring impact load applied to a metallic seat structure member such as a seat back frame. <P>SOLUTION: By performing injection molding by inserting a second member 7 of the metallic seat structure member having a coarse surface 7a into a forming die, leg parts 11a of a strength member 11 made of synthetic resin are firmly supported with respect to the coarse face. Since the strength member 11 is thereby firmly supported by the second member 7 of the seat structure member, the strength of the second member 7 of the seat structure member is dramatically increased. Nonetheless, since the strength member 11 is made of synthetic resin, the weight can be reduced, and the second member 7 itself of the seat structure member can be thinned. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a vehicle seat structure for automobiles, ships, aircraft, railway vehicles, and the like, and more particularly to a vehicle seat structure capable of reducing weight despite an increase in strength.

  In a conventional vehicle, particularly a vehicle seat structure, a seat back frame, which is a framework of a seat back that supports an occupant, is constituted by a single cast product obtained by casting an aluminum alloy. In addition, a portion extending in the vertical direction from the attachment portion (support portion) of the retractor supported by the vehicle body side wall portion in the vicinity of the side end portion of the seat back frame to the lower end edge of the seat back frame acts in the vehicle longitudinal direction. What is made into the reinforcement part with respect to a load (prior art document 1) is known as a prior art.

JP 2004-229688 A

  However, such a conventional technology is reinforced in advance such as a high-strength honeycomb structure so that the seat back frame can withstand a large load generated in the event of a collision with an automobile. As a result, the weight of the seat back frame and the like increases, and there is a problem that fuel consumption may be deteriorated.

  In order to solve the above-described problems, the present invention provides a vehicle seat structure provided with lightweight means that can sufficiently withstand an impact load applied to a metal seat structure member such as a seat back frame.

  In order to solve the above-mentioned problems, the vehicle seat structure according to claim 1 of the present invention is roughened by placing a metal sheet structure member having a rough surface in a molding die and injection-molding it. The leg portion of the strength member made of synthetic resin is firmly supported.

  In the vehicle seat structure according to claim 2 of the present invention, the strength member according to claim 1 is made of PPS, PBT, or PA.

  Further, in the vehicle seat structure according to claim 3 of the present invention, the seat structure member according to claim 1 or 2 is any one of aluminum, magnesium, copper, stainless steel, titanium, iron, and brass. It is characterized by.

  Furthermore, the vehicle seat structure according to claim 4 of the present invention is characterized in that the strength member according to any one of claims 1 to 3 has a plurality of continuous substantially honeycomb shapes. .

  Furthermore, the vehicle seat structure according to claim 5 of the present invention is characterized in that the rough surface of the seat structure member according to any one of claims 1 to 4 is a nano-level recess. To do.

  Further, in the vehicle seat structure according to claim 6 of the present invention, the load point applied to the seat structure member according to any one of claims 1 to 5 is a support portion of the seat belt retractor. It is characterized by.

  Further, in the vehicle seat structure according to claim 7 of the present invention, the load point applied to the seat structure member according to any one of claims 1 to 5 is a support portion of the reclining device. Features.

  According to the first aspect of the present invention, a metal sheet structure member having a rough surface is placed in a mold and injection-molded so that the legs of the strength member made of synthetic resin are formed on the rough surface. Since the strength member is made of synthetic resin, although the strength member is strongly supported by the sheet structure member, the strength of the sheet structure member is remarkably increased. There is an effect that the weight can be reduced and the sheet structure member itself can be made into a thin plate.

  Further, according to the present invention, the strength member is made of PPS, PBT, or PA, so that the strength member of synthetic resin can be reliably integrated with the metal sheet structure member. There is an effect.

  Further, according to the present invention, the sheet structure member is any one of aluminum, magnesium, copper, stainless steel, titanium, iron, and brass, so that the strength member is in a rough surface. Can flow in securely and can be firmly fixed.

  Further, according to the present invention, the strength member is formed into a plurality of continuous substantially honeycomb shapes, so that the impact load applied to the sheet structure member is dispersed, and a reliable impact can be obtained. There is an effect that absorption is possible.

  Further, according to the present invention, the rough surface of the sheet structure member is a nano-level recess, so that a person who touched the surface of the sheet structure member has a recess there. Since it does not feel something, a simple surface treatment is sufficient, and the manufacturing cost is reduced.

  Further, according to the present invention, the load point applied to the seat structure member is a support portion of the seat belt retractor, so that a large load is applied via the seat belt due to sudden braking of the vehicle or the like. Even if it is added to the support part of the retractor, since the sheet structure member that supports the support part is strengthened by the strength member made of synthetic resin, there is an effect that it can be sufficiently held.

  Further, according to the present invention, the load point applied to the seat structure member is a support portion of the reclining device, so that a large load is applied via the seat back due to sudden braking of the vehicle or the like. Even if it is added to the support part of the reclining device, the sheet structure member that supports the support part is strengthened by the strength member made of synthetic resin, so that there is an effect that it can be sufficiently held.

The perspective view which shows the vehicle seat which concerns on Example 1 of this invention, especially the structural member. FIG. 2 is a schematic cross-sectional explanatory view taken along the line SA-SA in FIG. 1. FIG. 3 is an enlarged cross-sectional explanatory view of a portion B in FIG. FIG. 2 is a cross-sectional view in a closed mold state schematically showing a state in which the sheet structure member shown in FIG. FIG. 5 is a cross-sectional view in an open state schematically showing a sheet structure member provided with an injection-molded strength member that is formed between the second movable die and the movable die shown in FIG. 4. Sectional drawing which shows typically the state which removed the sheet | seat structure member from the 2nd movable type | mold of FIG.

  Hereinafter, embodiments of the present invention will be described in detail. In the present invention, for the purpose of providing a vehicle seat structure provided with lightweight means that can sufficiently withstand an impact load applied to a metal seat structure member such as a seat back frame, a metal sheet structure member having a rough surface is provided. This was realized by firmly supporting the leg portion of the strength member made of synthetic resin on the rough surface by placing in a mold and injection molding. Embodiments of the present invention will be described below with reference to the drawings.

  A structure according to the first embodiment of the present invention will be described with reference to FIGS. The vehicle seat structure 1 as a vehicle according to the first embodiment includes a seat back 2 and a seat cushion 3 supported by a reclining device (not shown). The seat back 2 includes a seat structure member 4 and the seat structure. A cushioning material (not shown) disposed on the member 4 and a skin covering the seat structure member 4 and the cushioning material are provided, and a headrest (not shown) is supported on the upper portion of the seat back 2. Reference numeral 9 denotes a seat belt retractor.

  The sheet structure member 4 is arranged with a pipe-shaped first member 5 formed in a substantially inverted L shape (shown in FIG. 1) when viewed from the front and a right side RH of the first member 5 extending vertically. A second member 7 welded and supported by the first member 5 and a third member 6 to be described later, and a third member 6 welded and supported by the lower ends of the second member 7 and the first member 5. And more. As shown in FIG. 1, a plurality of continuous, substantially honeycomb-shaped strength members 11 are fixed to the second member 7 from the upper end to the lower end of the second member 7.

  The second member 7 is made of an iron plate, and after removing rust and oil on the surface, as shown in FIG. 3, the entire surface 7a of the second member 7 is nano-level, specifically 20 to 50 nano ( Nano molds the recess 12 in 1 billionth of a meter. The recess 12 is formed in an anchor shape.

  A retractor bracket 8 that supports the seat belt retractor 9 on the surface of the rear side RR is integrally formed on the upper end portion of the second member 7. Reference numeral 12 denotes a guide member that guides a seat belt (not shown) wound around the seat belt retractor 9 so that the shoulder of the occupant can be properly supported. Reference numerals 13 and 13 denote holders that are supported on the upper portion of the first member 5 so as to support the stay of the headrest. Reference numeral 10 denotes a side plate that is supported on the side of the first member 5 and supports an upper member of a reclining device (not shown).

  The strength member 11 is made of hard synthetic resin, PPS (polyphenylene sulfide), and the second movable mold 23 between the fixed mold 21 of the mold 20 and the movable mold 22 shown in FIG. By injection molding with the member 7 supported, PPS (polyphenylene sulfide), which is a hard synthetic resin, is formed on the rough surface of the surface 7a of the second member 7, that is, where the recess 12 is formed. By flowing in, the leg portion 11a has a wedge shape schematically shown in FIG. 2, and actually, when viewed with an electron microscope, it is formed by flowing into the recess 12 and solidifying as in the example shown in FIG. The strength member 11 is formed, and the leg portion 11 a of the strength member 11 is firmly supported by the second member 7. Reference numeral 24 denotes an injection means of PPS (polyphenylene sulfide) which is the hard synthetic resin.

  Next, the operation of the first embodiment will be described.

  The second member 7 of the metal sheet structure member 4 having a rough surface 7a is placed in the molding die 20 and injection molded to firmly support the legs 11a of the strength member 11 made of synthetic resin on the rough surface. Therefore, although the strength member 11 is firmly supported by the second member 7 of the sheet structure member 4, the strength of the second member 7 of the sheet structure member 4 is remarkably increased. Since the member 11 is made of synthetic resin, the weight can be reduced, and the second member 7 of the sheet structure member 4 itself can be made into a thin plate.

  The strength member 11 is made of hard synthetic resin PPS (polyphenylene sulfide), so that the synthetic resin strength member 11 can be reliably integrated with the second member 7 of the metal sheet structure member 4. There is an effect.

  Further, the second member 7 of the sheet structure member 4 is made of iron, and the leg portion 11a of the strength member 11 surely flows into the rough concave portion 12 of the surface 7a, so that it can be firmly fixed. There is an effect.

  Further, since the strength member 11 has a plurality of continuous and substantially honeycomb shapes, the impact load applied to the second member 7 of the sheet structure member 4 is dispersed, so that the impact can be reliably absorbed. Play.

  Further, since the rough surface of the second member 7 of the sheet structure member 4 is a nano-level recess 12, the recess 12 is provided to the person who touched the surface of the second member 7 of the sheet structure member 4. Since it does not feel something, a simple surface treatment is sufficient, and the manufacturing cost is reduced.

  Further, according to the present invention, the load point applied to the second member 7 of the seat structure member 4 is applied to the sudden braking of the automobile by the retractor bracket 8 which is a support portion of the seat belt retractor 9. Even if a large load is applied to the retractor bracket 8 that is the support portion of the retractor 9 via the seat belt due to the above, the second member 7 of the seat structure member 4 that supports the retractor bracket 8 that is the support portion is made of synthetic resin. Since it is strengthened by the strength member 11, there is an effect that it can be sufficiently retained.

  In the first embodiment, the load point has been described as the support portion of the reclining device. However, the load point is not limited to the support portion of the reclining device, and may be a support portion of the reclining device. Even if a large load is applied to the support portion of the reclining device (not shown) via the seat back 2, the second member 7 of the seat structure member 4 that supports the support portion is strengthened by the strength member 11 made of synthetic resin. So it can be retained sufficiently.

  Moreover, in the said Example 1, although the material of the 2nd member 7 of the sheet | seat structure member 4 is demonstrated as an iron plate, not only an iron plate but aluminum, magnesium, copper, stainless steel, titanium, brass may be sufficient. .

  Further, in the first embodiment, the strength member 11 made of synthetic resin is described as PPS (polyphenylene sulfide), but is not limited to PPS (polyphenylene sulfide), but PBT (polybutylene terephthalate) or PA. (Polyamide) may be used.

  Furthermore, in the said Example 1, although demonstrated as a seat structure for motor vehicles, it is not restricted to the object for motor vehicles, The seat structure for vehicles, such as a ship, an aircraft, a railway vehicle, may be sufficient.

DESCRIPTION OF SYMBOLS 1 Seat structure for motor vehicles 2 Seat back 4 Seat structure member 7 2nd member of a seat structure member 7a Surface of 2nd member 9 Seat belt retractor 11 Strength member 11a Leg part of strength member 12 Recessed part

Claims (7)

  For vehicle, characterized in that a metal sheet structure member with a rough surface is placed in a mold and injection molded to firmly support the legs of a strength member made of synthetic resin on the rough surface. Sheet structure. The vehicle seat structure according to claim 1,
The vehicle seat structure, wherein the strength member is made of PPS, PBT, or PA. The vehicle seat structure according to claim 1 or 2,
The vehicle seat structure according to claim 1, wherein the seat structure member is one of aluminum, magnesium, copper, stainless steel, titanium, iron, and brass. The vehicle seat structure according to any one of claims 1 to 3,
The vehicle seat structure, wherein the strength member has a plurality of continuous and substantially honeycomb shapes. The vehicle seat structure according to any one of claims 1 to 4,
2. A vehicle seat structure, wherein the rough surface of the seat structure member is a nano-level recess. The vehicle seat structure according to any one of claims 1 to 5,
A vehicle seat structure, wherein a load point applied to the seat structure member is a support portion of a seat belt retractor. The vehicle seat structure according to any one of claims 1 to 5,
A vehicle seat structure, wherein a load point applied to the seat structure member is a support portion of a reclining device.

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