JP7470341B2 - Shading knitted fabric and vehicle-mounted shading curtain using the same - Google Patents

Description

This invention relates to a mesh-based light-blocking fabric that blocks sunlight and other light while also having a certain degree of light translucency, and to a vehicle-mounted light-blocking curtain that uses the same.

Conventionally, the light-shielding knitted fabric disclosed in Patent Document 1, for example, is made by forming Denbigh stitch and cord stitch with back and front reeds. Furthermore, light-shielding knitted fabrics such as those disclosed in Patent Documents 2 and 3, which use three reeds and are made of chain stitch, Denbigh stitch, and cord stitch, are also used.

Japanese Patent Application Laid-Open No. 11-93034 JP 2000-314942 A JP 2002-229160 A

As disclosed in the conventional Patent Document 1, when a mesh light-blocking curtain for use in a vehicle is formed using two reeds, the fabric is easily stretched and has poor shape stability, and the side edges of the fabric are prone to curling and rippling, and the light-blocking rate is relatively low. Furthermore, as disclosed in Patent Documents 2 and 3, when a chain stitch structure is added using three reeds, the tensile strength is high, but when the curtain is repeatedly stretched and rolled up as a vehicle curtain, there is a problem that, although wrinkles do not occur with repeated stretching in normal operations, when irregular operations such as forcibly operating the curtain from the front or back seat position are performed, wrinkles such as folds are likely to occur.

This invention was made in consideration of the above-mentioned background technology, and aims to provide a light-shielding knitted fabric that is simple in structure, inexpensive, has high tensile strength, is wrinkle-resistant, and has a high design quality, and an in-vehicle light-shielding curtain using the same.

This invention relates to a light-blocking fabric for use in vehicle blackout curtains, which comprises a first knitted structure made of chain stitches knitted by a first reed, a second knitted structure made of cord stitches formed by a second reed, and a third knitted structure made of cord stitches formed by a third reed and which together with the second knitted structure forms an opening, and the warp threads are inelastic threads.The first knitted structure made of chain stitches is knitted in a meandering manner, swaying sideways at every predetermined course.

In the first knitted structure made of chain stitch, the warp threads are swung laterally by one wale for each specified course, and the warp threads at the swung laterally are knitted with closed stitches in a meandering pattern , while the second knitted structure and the third knitted structure are knitted symmetrically with each other, the warp threads are swung laterally by a specified wale for each specified course, and the warp threads at the swung laterally are knitted with open stitches to form the opening, and the warp threads of the first knitted structure made of chain stitch are knitted so as to cross diagonally with the wale direction of the second and third knitted structures .

This invention also provides a vehicle-mounted light-shielding curtain in which the light-shielding fabric is attached to a frame member for opening and closing, and is capable of being rolled up and extended.

The light-shielding knitted fabric of this invention and the vehicle-mounted light-shielding curtain using the same are simple in construction and inexpensive, and are highly flexible, have high shape stability, and have high tensile strength. They also do not wrinkle easily even under various conditions of use, and have a high design quality.

In particular, the vehicle-mounted light-shielding curtain of this invention is less likely to wrinkle even when repeatedly stretched and rolled up, and it effectively blocks light while also having a good design.

1 is a front view showing the knitting structure of a light-shielding knitted fabric according to one embodiment of the present invention. 1 is a front view showing a light-shielding knitted fabric according to one embodiment of the present invention. FIG. 11 is a front view showing a conventional light-shielding knitted fabric. FIG. 2 is a front view showing the cut edge of a light-shielding knitted fabric according to one embodiment of the present invention. FIG. 11 is a front view showing a cut edge of a conventional light-shielding knitted fabric.

The light-blocking knitted fabric according to an embodiment of the present invention will be described below with reference to the drawings. Figures 1 and 2 show a light-blocking knitted fabric according to one embodiment of the present invention. The light-blocking knitted fabric 10 according to this embodiment is a warp knitted fabric made of mesh fabric, and the first knitted structure 12 is chain-stitched with the front-side reed GB1, with thread position numbers (1-0/0-1) and (1-2/2-1) repeated every four courses. The chain-stitched warp threads 11 of the first knitted structure 12 meander by being swung horizontally one wale every four courses, and the warp threads 11 at the swung horizontally form closed loops.

The second knitted structure 14 is cord knitted with the middle reed GB2, with thread position numbers (1-0/1-2/1-0/1-2) and (4-5/4-3/4-5/4-3) repeated every four courses. The cord knitted warp threads 13 are knitted by swaying horizontally for four wales every four courses. The warp threads 13 at the swaying positions are open.

The third knitting structure 16 is cord knitted with the reed GB3 on the back side, and is arranged symmetrically to the second knitting structure 14, with thread position numbers (4-5/4-3/4-5/4-3) and (1-0/1-2/1-0/1-2) repeated every four courses. The cord knitted warp threads 15 are swung horizontally every four courses, in the opposite direction to the four-wale second knitting structure 14. As a result, the light-shielding knitted fabric 10, together with the second knitting structure 14, constitutes a mesh fabric that forms openings 20. In the third knitting structure 16, the warp threads 15 at the swung horizontally also form open stitches.

The warp threads 11, 13, 15 of each of the first, second, and third knitted structures 12, 14, and 16 are inelastic threads, such as polyester, nylon, cupra, acetate, polyurethane, or a composite of these. The thickness is appropriately selected and is 30 to 100 denier, preferably 40 to 75 denier, and for example, a 45 denier thread is used. The thickness of the thread may be changed for each of the warp threads 11, 13, 15 of each of the first, second, and third knitted structures 12, 14, and 16. For example, only the warp thread 11 of the chain-stitched first knitted structure 12 may be thickened, or any of the warp threads 11, 13, 15 of each of the first, second, and third knitted structures 12, 14, and 16 may be thickened.

In this embodiment, the warp knitted fabric 10 is manufactured by knitting the first knitted structure 12 with the first reed GB1, knitting the second knitted structure 14 with the second reed GB2, and knitting the third knitted structure 16 with the third reed GB3. The three reeds GB1, GB2, and GB3 are warp knitted by moving the yarn positions as described above.

The warp knit fabric 10 of this embodiment is a warp knitted mesh fabric as shown in FIG. 2, in which the warp yarns 11 of the first knitted structure 12 are knitted in a meandering pattern, and the warp yarns 11 of the chain-stitched first knitted structure 12 are knitted so as to cross obliquely with the wale direction of the second and third knitted structures 14, 16. This gives the warp knit fabric 10 high shape stability, and prevents curling or waviness at the side edges of the fabric. For example, by changing the conventional method of warp knitting 75 denier raw yarn with two reeds to the 45 denier raw yarn of this embodiment with three reeds, the fabric becomes denser and the appearance quality is improved compared to conventional products.

In addition, as in Patent Documents 2 and 3, when a chain knit structure is simply added using three reeds, wrinkles such as folds are likely to occur when the fabric is repeatedly stretched and wound as a vehicle curtain. However, in the warp knitted fabric 10 of this embodiment, the warp yarns 11 of the first knitted structure 12 are knitted in a meandering manner, so that the warp yarns 11 of the first knitted structure 12 are knitted so as to cross obliquely with the wale direction of the second and third knitted structures 14 and 16, and the force that causes wrinkles is dispersed by the warp yarns 11 knitted obliquely with respect to the wale direction. Therefore, compared to conventional warp knitted fabrics, the fabric has high flexibility and is less likely to wrinkle. Moreover, it is possible to form a light-shielding knitted fabric 10 that is translucent but has a high light-shielding rate and high designability. In addition, even if the warp knitted fabric 10 is cut horizontally, the warp yarns 11 of the first knitting structure 12 are knitted in a meandering pattern, so the pile at the cut edge of the warp knitted fabric 10 is shorter or less likely to stick out, and the flammable yarns at the cut edge are shorter, resulting in a warp knitted fabric 10 with high flame retardancy.

The warp knitted fabric 10 of the present invention is particularly suitable for use as a vehicle-mounted light-blocking curtain, due to its flame retardant nature resulting from little protrusion of yarn at the cut edge, and even when formed into a light-blocking curtain and the frame member for opening and closing is repeatedly opened and closed, the fabric is less likely to wrinkle. In addition, by appropriately setting the knitting conditions according to the application and appropriately arranging the mesh openings 20, a light-blocking curtain with high light-blocking properties while ensuring visibility can be formed. Furthermore, by using yarn of 40 to 75 denier, and more preferably yarn of 40 to 50 denier, a thin light-blocking curtain can be formed, and the diameter can be reduced when wound into a roll, making it preferable as a light-blocking curtain for vehicles as it does not take up much storage space.

The light-blocking knitted fabric of this invention and the vehicle light-blocking curtain using the same are not limited to the above-mentioned embodiment, and the knitting pattern, material and number of warp threads can be set as appropriate. For example, the warp threads 11 of the first knitted structure 12 may be knitted in a meandering manner without forming a closed loop, and the horizontal swing width may be not only one wale as in the above-mentioned embodiment, but also multiple wales. Furthermore, the second knitted structure 14 and the third knitted structure 16 may be swung horizontally by an appropriate width with only closed loops, and the size of the opening 20 and the knitting structure can be set according to the application.

Next, an example of the light-shielding knitted fabric 10 of the present invention will be compared with an example of a conventional light-shielding knitted fabric made with two reeds using Figures 2 and 3. As shown in Figure 2, the light-shielding knitted fabric 10 of the present invention has a relatively small opening 20, a high tensile strength of the knitted structure, and is less likely to wrinkle even after repeated winding and stretching.

In contrast, the light-shielding knitted fabric 22 of the comparative example shown in Figure 3 was knitted under the same conditions using a conventional two-reed knitting system without chain stitching using the first knitting structure 12. In this case, the opening 24 was relatively large, and the knitting structure had low tensile strength, so it was prone to stretching. Furthermore, the shape of the knitting structure was prone to change.

Next, Figures 4 and 5 are used to compare the light-shielding fabric 10 of the present invention with an example of a conventional light-shielding fabric made with three reeds. As shown in Figure 4, in the light-shielding fabric 10 of the present invention, the yarn at the cut edge of the knitted fabric cut in the horizontal direction of the warp knitting is short, and the yarn at the cut edge remains short even after use in a product. Therefore, it can be seen that the flame retardancy resulting from the yarn at the cut edge is high.

In contrast, the light-shielding knitted fabric 26 of the comparative example shown in Figure 5 is knitted with three bars using a conventional knitting structure rather than a meandering chain stitch. In this case, the yarn at the cut edge of the knitted fabric is relatively long, and repeated use makes it easy for the yarn at the cut edge to stick out. Therefore, it can be said to have low flame retardancy. Furthermore, the light-shielding knitted fabric 26 of the comparative example was prone to wrinkling due to repeated winding and stretching.

10 Light-shielding knitted fabric 11, 13, 15 Warp yarn 12 First knitted structure 14 Second knitted structure 16 Third knitted structure 20 Openings GB1, GB2, GB3 Reed

Claims (2)

A light-shielding knitted fabric for use in a vehicle light-shielding curtain, comprising a first knitted structure formed by chain stitching using a first reed, a second knitted structure formed by cord stitching using a second reed, and a third knitted structure formed by cord stitching using a third reed, which together with the second knitted structure forms an opening, and the warp yarns are inelastic yarns;
In the first knitted structure by the chain stitch, the warp yarn is swung laterally by one wale for each predetermined course, and the warp yarn at the swung position is knitted in a meandering manner with a closed stitch ,
The second knitted structure and the third knitted structure are knitted symmetrically to each other, and are swung laterally in a predetermined wale for each predetermined course, and the warp yarns at the swung position are knitted with an open stitch to form the opening,
A light-shielding knitted fabric characterized in that the warp yarns of the first knitted structure, which is chain knit, are knitted so as to cross obliquely with the wale direction of the second and third knitted structures . A vehicle-mounted light-shielding curtain comprising the light-shielding knit fabric according to claim 1 attached to a frame member for opening and closing.

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