JPH0978390A - Coupling hood sheet for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a hood fabric jointly provided with a reinforcing fiber capable of imparting physical properties for preventing hanging down as a substrate for coupling hood sheet by simple operation and short operation time. SOLUTION: In roving cloth woven into plain weave structure by a synthetic fiber filament, warp and weft obtained by uniformly arranging twistless synthetic fiber filament using many numbers of organic elastic structure (e.g. aramid fiber) mutually parallel in one direction and yarn strand state adjacent to yarn corresponding to crease position in longitudinal and horizontal directions which corresponds at equal spaces S are woven into lattice like shape so as to entangle mutually at a right angle at a proper interval and entangled in matrix direction in which length and width in plane weave density direct and integrally woven. Thereby, the hood comprising a weave structure jointly having reinforcing fiber in which crude mesh lattice-like woven fabric as reinforced fabric is integrated in single structure is formed and a thermoplastic polymer resin having flexibility is formed as the front and the back face layer on the hood fabric.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hood used for a hood sheet having an excellent function of preventing drooping of a connecting hood for a vehicle, and more particularly to the height of a vehicle hood (hereinafter referred to as a hood). This is to make it possible to economically advantageously utilize a hood sheet base material for a hood sheet, which is suitable for sufficiently exhibiting strength and high elastic modulus and has high durability.

[0002]

2. Description of the Related Art A vehicle connecting hood sheet that has been widely used in the past uses polyester fibers typified by polyalkylene terephthalate and synthetic fibers such as vinylon as roving cloth (plain weave) as a base material for calenders. It is known that the base is a so-called single piece plain (single-layered structure), which is made of thermoplastic synthetic resin processed by rolls. Usually, when the hood is attached to the hood frame and configured as a rectangular hood, the slack (descent) phenomenon occurs over time between the vehicle connection parts in relation to the vehicle operating conditions. The improvement of the durability of the hood has been screaming more than ever before. Therefore, various proposals have been made for the material for the hood body, including reduction of the weight of the hood body. As one of the measures for preventing the drooping of the hood, the applicant of the present invention (1) in Japanese Unexamined Patent Publication (Kokai) No. 6-212532 discloses that a hood is formed in a double structure, and a coarse lattice woven fabric is embedded as a reinforcing cloth in the intermediate layer. The top bone can be loosely inserted into the stratified boundary so as to be held, so that the top bone can be three-dimensionally configured by a conventional method. That is, an aramid filament yarn of organic high elasticity fiber is interleaved as a lattice weave in the intermediate layer of two roving cloths of a base material to be integrated, and the strength of the base material is increased to improve the elastic modulus. We proposed a method that can improve the work efficiency of the hood structure. In addition, according to JP-A-6-322231, organic high-elasticity aramid fiber is also woven into a multiaxial weave of a highly meshed organic aramid fiber to form a reinforcing fiber, which is attached with an adhesive or the like. Laminated Shihorochi was used as a hood sheet base. By improving the strength and elongation of the hood body as described above, in addition to the above-mentioned proposal (1), the reinforcement effect corresponding to the drooping prevention effect of the hood body can be achieved by stacking on the conventional hood.

[0003]

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention As a reinforcing means for a single-layered single-piece hood using the above-mentioned conventional roving cloth, a reinforcing synthetic fiber filament yarn is formed into a woven fabric having a lattice or a network structure, which is used as a hood. In the manufacturing process such as sandwiching between the ground polymerization layers to form a laminated structure, the sticking work is required, the work is very troublesome, and the rough woven fabric is prepared in another process, and the morphology of the coarse woven fabric itself is unstable. There was a drawback that it was difficult to handle and the work efficiency was very troublesome. Therefore, in view of the above circumstances, the present invention solves the above problems and can be used for a hood sheet to sufficiently exhibit physical properties and mechanical properties, and cut the process steps associated with lamination to improve work efficiency. The purpose is to improve.

[0004]

Means for Solving the Problems In order to achieve the above object, the present invention provides a roving cloth (plain weave) top cloth made of untwisted synthetic fiber filaments between the yarn groups in the vertical and horizontal arrangement directions of the plain weave top cloth fabric. Coarse lattice weaves in which aramid filaments are arranged in parallel in one direction as yarns of a large number of organic elastic fibers adjacent to each yarn at corresponding weaving positions at equal intervals and in a yarn strand shape. The warp yarn reinforcing fiber yarn group 4 of the appropriate interval S (10 to 2
(0 mm) in parallel, and the untwisted synthetic fiber filaments composed of this yarn group and also a large number of organic elastic fibers are aligned parallel to each other in one direction and in the form of yarn strands to form a flat weave for a coarse lattice weave. The yarn-reinforcing fiber yarn group 5 is woven in a lattice pattern so as to be entangled with each other to form a coarse weave structure, and these yarn groups 4 and 5 are arranged in the matrix direction in which the plain-woven fabric yarns 1 and 2 of the upholstery substrate are oriented. A hood sheet for a vehicle, characterized in that a hood ground base material that is entangled and woven together to be integrally woven into a plain weave has a single-layer structure. The layer is conventionally formed with a thermoplastic synthetic resin layer. Further, in the present invention, the organic elastic fiber is used in a roving state, and in order to maintain the performance of the lattice-structured fabric as a coarse reinforcing fabric, the yarn strands of the vertical and horizontal yarn groups 4 and 5 are driven. The length of the roving (plain weave) upholstery and the number of drives to be entangled with the weft yarn groups 1 and 2 can be appropriately determined according to the desired physical property value of the reinforcement.

[0005]

As described above, in order to intervene as a reinforcing fiber of a fabric layer in the middle of the conventional double hood as described above, additional means for separately weaving a coarse grid or a mesh fabric and laminating it as a reinforcing fabric is adopted. However, according to the structure of the present invention, it is possible to provide the same level of high strength and elasticity as those of the upholstery that has been laminated in the double structure so far. Does not require weaving. This is because the length and width of the reinforcing fiber yarn 6 for coarse lattice weaving using aramid fiber as the reinforcing fiber and the group of horizontal yarns ( 6 ) 4 and ( 6 ) 5 are roving cloths (plain weave) as a base material. This is because the warp and weft yarn groups ( 3 ) 1 and ( 3 ) 2 of No. 3 and the plain weave fabric were united at the same time and effectively reinforced as a single structure upholstery. Therefore, the hood can be manufactured relatively easily, the process can be shortened, the work efficiency can be improved, the hood thickness can be reduced, and the hood as a whole has a high flexibility. In addition to the above, the present invention has suitable weaving properties and is suitable for a base material. Because of the same weight, aramid fiber has the characteristics of high-strength fiber with high strength and high modulus, which is 8 times that of steel and 3 times that of glass and polyester. When used as a roving cloth, the lattice-woven aramid fiber reinforcing yarns in the arrangement density structure of the roving cloth work as a cross-linking structure in the woven structure in a state where reinforcing fibers that do not have bending to concentrate stress are crossed, It is isotropic with respect to various external forces applied to the hood when it is used as a seat, and plays the role of a reinforcing cloth, so that the lifting force of the hood is highly enhanced. At the corner of the hood body, the flexibility of the hood adapts to the elasticity of the hood and has strength characteristics against friction damage.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings. In FIG. 1, 3 is a roving cloth having a conventional plain weave design, and is a woven cloth having a medium density in which the array density of the warp thread group 1 and the weft thread group 2 is entangled with each other, and 6 is an organic material. Synthetic fiber filaments that are untwisted or slightly twisted using elastic fibers are used,
The reinforcing fiber yarns for the coarse lattice weave simultaneously woven in the structure of the roving cloth 3 are described below by the warp yarn reinforcing fiber yarn group 4 for the lattice weave and the weft yarn reinforcing fiber yarn group 5 for the lattice weave. Is formed into a lattice weave. Reference numeral 1 in the figure is ( 3 ) 1
, 2 are the same members as ( 3 ) 2 and 4, 4 are ( 6 ) 4 and 5 are the same members as ( 6 ) 5. In the yarn group of the lattice weave, the warp yarn reinforcing fiber yarn group ( 6 ) 4 for lattice weaving and the weft reinforcing fiber yarn group ( 6 ) 5 for lattice weaving are the warp yarn group ( 3 ) 1 of the roving cloth 3. , A non-twisted synthetic fiber aramid filament consisting of a large number of organic elastic fibers unidirectionally adjoining each interwoven yarn at appropriate positions with an appropriate interval S between the yarn groups arranged in the weft yarn group ( 3 ) 2. The warp yarn reinforcing fiber yarn groups ( 6 ) 4 for coarse lattice weaving, which are parallel and parallel to each other in the form of yarn strands, are juxtaposed at appropriate intervals, and this yarn group and also a large number of organic elastic fibers are arranged. Said yarn groups ( 6 ) 4 and ( 6 ) having a weft reinforcing fiber yarn group ( 6 ) 5 for coarse lattice weave, which is obtained by aligning untwisted synthetic fiber filaments which are parallel to each other in one direction and flat in the form of yarn strands. 6 ) 5 in a coarse grid pattern The thread groups ( 6 ) 4 and ( 6 ) 5 are woven and coarsely woven, and the thread groups ( 6 ) 4 and ( 6 ) 5 are entangled in the matrix direction in which the vertical thread groups 1 and the horizontal thread groups 2 of the roving cloth of the upholstery base are entwined and united to form a unit. The plain base material woven by the plain weave structure has a single-layer structure. The top and bottom surfaces of the single-layered upholstery substrate are topped with a thermoplastic polymer to form flexible resin surfaces.
In the above-mentioned single-layer hood material, aramid filament fiber as a high-performance fiber is used as a reinforcing fiber material of the hood to reinforce the lifting force of the hood body. The double-bonding composition area of the ground is formed by plain weave hoods made of synthetic fiber filaments (single-layer structure), and the coarse woven fabrics formed in a net or grid pattern are formed in these hood stratifications Then, it is configured by pressure bonding or the like by heat melting of an adhesive or a thermoplastic resin. However, due to the reinforcing form of the plain weave fabric according to the present invention, conventionally, a single roving cloth and the above-mentioned organic high elasticity fiber (aramid fiber) are used.
The woven flat grid fabric is woven at the same time to form a single flat woven fabric. There is no need to prepare by separate weaving, or to attach a coarse woven fabric that is unstable in shape and inconvenient to handle in the pasting process, and the work becomes very simple, and you can omit the troublesome process step work. Of course, the work time is also small.

Further, in the case of combining two single plains, since the ordinary synthetic fiber filaments are plain-woven and polymerized, the strength-elongation measurement result is expected to improve the durability desired for the plain as much. Not done. That is, in the open-top polymer composition, fatigue strain is accumulated in a place where the base material is generally hard and repeatedly bent and where stress concentrates on the open-body. In this connection, the structure of the present invention is a single woven fabric composition having the same degree as that of the conventional laminated composition because the reinforcing fiber group of the coarse lattice weave, which is said to be a mesh fabric based on polyaramid, is also included in the hot ground composition. In addition to showing isotropic and high elongation at break, the weight is reduced. In addition, since the hood itself has high flexibility, the bellows-shaped rectangular hood has a followability with respect to rocking of the hood even at the hood corner portion as shown in FIG.
It is possible to obtain a hood structure that can significantly contribute to the desired function of preventing the drooping of the hood by also exerting advantageous physical properties such as friction resistance and resistance to rubbing. As described above, in the operation of the embodiment of the present invention, remarkable modifications can be obtained in terms of work and material composition.

[0008]

[Effect] As described above, the configuration according to the present invention is
Rather than using a layer of reinforcing fabric having a high-strength and high-modulus coarse lattice weave separately woven on the reinforcing fiber of the open base material of the connected hood sheet, a plain weave fabric with flat synthetic fiber filaments is used. The vertical and horizontal reinforcing fibers for coarse lattice weave formed by aligning the untwisted synthetic fiber filaments made of organic high elasticity fiber in the matrix direction in the array density woven as Since the yarns are entangled at appropriate intervals and integrally woven together to form a bellows-corner-shaped hood sheet as a hood base, conventional lamination work is not necessary in the manufacturing process of the hood base. Therefore, efficient work can be performed, and the manufacturing cost can be significantly reduced. Further, in the test according to the embodiment of the present invention, the desired reinforcement on the open area shows significantly more physical properties than the conventional single open area (single structure), and the same structure as the double structure by the fiber reinforcing means by lamination. Performance is obtained (see Fig. 4), and since the hood sheet of the hood body can be made thin and highly flexible, it is necessary to reduce the weight and reinforce the hood body (both side walls, four corners). ) Is added to the composition isotropic strength, so it has a great practical effect such as the function of preventing the drooping of the hood.

[Brief description of drawings]

FIG. 1 is a partially enlarged view schematically showing a hooded base material of the present invention,
Schematic plan view with partial cutout enlargement

2 is a partially cutaway enlarged side view schematically showing the line AA of FIG.

FIG. 3 is a partially broken perspective view of the bellows corner tubular hood of the present invention.

FIG. 4 is a strength-elongation measurement test table of the open-air construction of the present invention.

[Explanation of symbols]

1: ( 3 ) 1 Loving cloth warp yarn group 2: ( 3 ) 2 Roving cloth weft yarn group 3: Roving cloth (plain weave) 4: (6) 4 Warp yarn reinforcing fiber yarn group for lattice weave 5: (6) 5 lattice Woven weft reinforcing fiber yarn group 6 Coarse lattice Reinforcing fiber yarn for weaving 7 Surface resin layer 8 Hood sheet 9 Expanded bellows rectangular tubular hood body

Claims (3)

[Claims] 1. A vehicle connecting hood sheet using a plain woven fabric made of synthetic fiber filaments as fiber yarns constituting a woven fabric base material, wherein an appropriate interval is provided between the vertical and horizontal yarn groups of the plain woven fabric. And warp yarns for lattice weave in which untwisted synthetic fiber filaments using a large number of organic elastic fibers adjacent to each other at corresponding weaving positions are aligned in one direction in a yarn bundle. Reinforcing fiber yarn groups 4 are juxtaposed at appropriate intervals S, and this yarn group and untwisted synthetic fiber filaments, which are also composed of a large number of organic elastic fibers, are aligned in one direction in a bundle of yarn yarns. And the weft reinforcing fiber yarn group 5 for lattice weaving are woven in a lattice shape so as to be entangled at right angles with each other to form a coarse weave structure, and these thread groups 4 and 5 are warp yarns 1 of a plain weave fabric of a base material. And weft 2
A hood sheet for vehicles, characterized in that the hood base material, which is woven in a plain weave structure by being entangled and entangled in the matrix direction in which the above is oriented, has a single structure. 2. The warp reinforcing fiber yarn group 4 for the coarse lattice weave.
2. The vehicle connecting hood sheet according to claim 1, wherein the coarse lattice woven fabric texture portion woven from the weft reinforcing fiber yarn group 5 is aramid fiber. 3. The front and back layers of the hood, which are woven integrally with a plain weave woven fabric forming the hood base to form a single structure, are generally provided with a soft thermoplastic resin surface. A connecting hood sheet for a vehicle according to claim 1 or 2, characterized in that