Sun visor

Abstract

To provide a sun visor made of one blank sheet, which prevents the tearing of the belt starting from a cut for connecting the ends of the belt, and which is difficult to separate the ends of the belt from each other and difficult to come off from the head of a wearer. [Solution] A blank sheet 2 forming a sun visor 1 is integrally provided with a band-shaped belt 3 extending in the left-right direction and a tongue-shaped visor 5 connected to the center of the lower side of the belt 3. A first end 11 of the belt 3 is provided with a plurality of notches 12 extending in the up-down direction from below the upper side of the belt 3 to above the lower side, and a second end 14 of the belt 3 is provided with insertion pieces 15 that can be inserted into each of the notches 12. The length L in the left-right direction of the insertion pieces 15 at the second end 14 is larger than the arrangement pitch P of the notches 12, and specifically is set to be equal to or greater than 150% and less than 200% of the arrangement pitch P.

Description

[Technical Field]

[0001] This invention relates to a sun visor made from a single blank sheet. [Background technology]

[0002] This type of sun visor is disclosed, for example, in Patent Document 1. In Patent Document 1, the blank sheet that becomes the sun visor is formed by punching out sheet material such as thick paper, plastic sheet, or thin metal plate, and is integrally equipped with a band-shaped belt that is longer than the average person's head circumference and a tongue-shaped visor that is connected to the center of the lower edge of the belt. A valley fold line is formed at the boundary between the belt and the visor, and a downward-convex arc-shaped mountain fold line that connects both ends of the valley fold line is formed at the base end of the visor. When the blank sheet is folded along these valley fold lines and mountain fold lines, a three-dimensional sun visor appears in which the visor curves upward in a convex shape and slopes downward toward the front.

[0003] Each end of the belt has a notch that is half the length of the vertical width of the belt. Specifically, one end of the belt has multiple notches that are evenly spaced and extend downward from the top edge, and the other end of the belt has one notch that extends upward from the bottom edge. When one of the notches at one end of the belt engages with a notch at the other end, the belt as a whole forms a ring shape, and the diameter of the belt changes depending on the engaged notch. In other words, the wearer of the sun visor can adjust the diameter of the ring-shaped belt to fit their head circumference, and can wear the sun visor on their head by placing the adjusted belt over their head from above and hanging it over their ears. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2001-49515 Summary of the Invention [Problem to be solved by the invention]

[0005] As described above, the sun visor (blank sheet) of Patent Document 1 has widthwise (vertical) notches at both ends of the belt, and the belt is formed into a ring shape by the interlocking of the notches. However, these notches may cause the belt to tear. In other words, if a strong external force acts on the ends of the belt in the widthwise direction, the belt may tear starting from the inner end of the notch, depending on the material and thickness of the blank sheet. Furthermore, in Patent Document 1, since the ends of the belt are connected only by the interlocking of the notches, if an external force acts on the belt in the opposite direction to the interlocking direction, the interlocking is released and the ends are easily separated. In other words, the sun visor is relatively prone to coming off the wearer's head.

[0006] The purpose of this invention is to prevent tearing of the belt at the cuts used to connect the ends of the belt in a sun visor made from a single blank sheet. Another purpose of this invention is to provide a sun visor in which the ends of the belt are difficult to undo and the visor is difficult to remove from the wearer's head. [Means for solving the problem]

[0007] This device is directed to a sun visor made of a single blank sheet 2 whose thickness is in the front-to-rear direction. The blank sheet 2 is integrally provided with a band-shaped belt 3 extending in the left-to-right direction and a tongue-shaped visor 5 connected to the center of the lower edge of the belt 3. A first end 11, which is one of the left and right ends of the belt 3, is provided with multiple notches 12 extending in the up-down direction from below the upper edge of the belt 3 to above the lower edge, and a second end 14, which is the other left and right end of the belt 3, is provided with insertion pieces 15 that can be inserted into each notch 12.

[0008] The multiple notches 12 at the first end 11 are provided at equal intervals in the left-right direction. The length L in the left-right direction of the insertion piece 15 at the second end 14 is set to be larger than the arrangement pitch P of the notches 12.

[0009] The length L of the insertion piece 15 is set to be equal to or greater than 150% and less than 200% of the arrangement pitch P of the notches 12. [Effects of the Invention]

[0010] In the blank sheet 2 constituting the sun visor 1 according to the present invention, a first end 11, which is one of the left and right ends of the belt 3, is provided with a plurality of notches 12 extending in the vertical direction. A second end 14, which is the other of the left and right ends of the belt 3, is provided with insertion pieces 15 that can be inserted into each of the notches 12. When the insertion piece 15 is inserted into one of the notches 12, the first end 11 and the second end 14 are connected, and the belt 3 as a whole forms a ring shape. The wearer of the sun visor 1 can adjust the diameter of the ring-shaped belt 3 to fit their head circumference by selecting one of the multiple notches 12 to insert the insertion piece 15 into, and can wear the sun visor 1 on their head by placing the adjusted belt 3 over their head from above and looping it around their ears.

[0011] In addition, in the present invention, each notch 12 in the first end 11 of the belt 3 is provided from below the top edge to above the bottom edge of the belt 3 so that the notches 12 do not reach the top or bottom edges of the belt 3. As a result, even if a strong external force acts on the first end 11 of the belt 3 in the width direction, the external force is received by the top or bottom edge of the first end 11, making it difficult for the force to act on the inward notches 12, thereby preventing the belt 3 from tearing from the notches 12.

[0012] If the length dimension L in the left-right direction of the insertion piece 15 of the second end 14 is set to be greater than the arrangement pitch P of the multiple notches 12 of the first end 11, the tip of the insertion piece 15 inserted into one of the notches 12 can also be inserted into the notch 12 adjacent to that notch 12. In other words, by inserting the insertion piece 15 into multiple notches 12, the first end 11 and the second end 14 can be firmly connected, making it possible to obtain a sun visor 1 in which the connection between the ends of the belt 3 is difficult to unravel, that is, which is difficult to come off the wearer's head.

[0013] Setting the length dimension L of the insertion piece 15 to be 150% or more and less than 200% of the arrangement pitch P of the notches 12 allows for a strong and easy connection between the first end 11 and the second end 14. If the length dimension L is less than 150% of the arrangement pitch P, when the insertion piece 15 is inserted into two adjacent notches 12, the length of the portion protruding from the second notch 12 will be less than 50% of the arrangement pitch P, and it will be difficult to obtain sufficient connection strength even if that portion is folded back. Also, if the length dimension L is 200% or more of the arrangement pitch P, the insertion piece 15 will be too long and its tension will be weak, making it difficult to easily insert it into the notches 12. [Brief explanation of the drawings]

[0014] [Figure 1] 1 is a front view of a blank sheet forming a sun visor according to an embodiment of the present invention; [Figure 2] FIG. 1 is a perspective view of a sun visor formed by forming a blank sheet into a three-dimensional shape. [Figure 3] FIG. 2 is a front view showing the structure for connecting the ends of the belts. [Figure 4] FIG. DETAILED DESCRIPTION OF THE INVENTION

[0015] (Embodiment) Figures 1 to 4 show an embodiment of a sun visor according to the present invention. As shown in Figure 1, the sun visor 1 is made of a single blank sheet 2 formed by punching out a sheet material such as thick paper or plastic. The front, back, left, right, and top and bottom of the blank sheet 2 in this embodiment are indicated by the crossed arrows shown in the figure and the indications near each arrow. The blank sheet 2 is integrally provided with a band-like belt 3 extending in the left-right direction and longer than the average person's head circumference, a decorative piece 4 connected to the center of the upper edge of the belt 3, and a tongue-shaped visor 5 connected to the center of the lower edge of the belt 3.

[0016] Decorative piece 4 is a part that is shaped to resemble the head of, for example, an animal or character, and has a pattern drawn on its front that extends down to belt 3. A horizontal valley fold line 7 is formed at the boundary between belt 3 and eaves 5, and a downward-convex arc-shaped mountain fold line 8 is formed at the base end (top end) of eaves 5. When blank sheet 2 is folded along these valley fold lines 7 and mountain fold lines 8, a three-dimensional sun visor 1 appears in which eaves 5 curves upward in a convex shape while sloping downward toward the front (see Figure 2).

[0017] A plurality of (nine in this embodiment) notches 12 extending in the vertical direction are provided at equal intervals in the left-right direction in a first end 11, which is the right end of the belt 3. These notches 12 are provided from below the top edge of the belt 3 to above the bottom edge, i.e., not reaching the top or bottom edges of the belt 3.

[0018] An insertion piece 15 having a vertical width smaller than that of the belt 3 extends from the tip of the second end 14, which is the left end of the belt 3. The vertical width of the insertion piece 15 is set to be the same as or slightly smaller than the vertical length of each notch 12 of the first end 11, that is, the insertion piece 15 is formed so that it can be inserted into each notch 12. To facilitate this insertion, the insertion piece 15 is formed in a tapered shape where the vertical width gradually decreases toward the tip.

[0019] When insertion piece 15 is inserted into one of the notches 12, first end 11 and second end 14 are connected, and belt 3 as a whole forms a ring shape. The wearer of sun visor 1 can adjust the diameter of ring-shaped belt 3 to fit their own head circumference by selecting one of the multiple notches 12 into which to insert insertion piece 15, and can wear sun visor 1 on their head by placing the adjusted belt 3 over their head from above and hanging it over their ears.

[0020] The length L of the insertion piece 15 in the left-right direction is set to be larger than the arrangement pitch P of the notches 12 in the left-right direction, and more specifically, is set to be slightly less than twice the arrangement pitch P (150% or more but less than 200%). By setting the length L of the insertion piece 15 to be larger than the arrangement pitch P of the notches 12 in this way, as shown in Figures 3 and 4, the tip of the insertion piece 15 inserted into one of the notches 12 can also be inserted into a second notch 12 adjacent to the first notch 12, and further, by folding back the portion protruding from the second notch 12, the first end 11 and the second end 14 can be firmly connected. This makes it possible to obtain a sun visor 1 in which the ends of the belt 3 are difficult to undo, that is, which is difficult to come off the wearer's head.

[0021] If the length dimension L of the insertion piece 15 is less than 150% of the arrangement pitch P of the notches 12, when the insertion piece 15 is inserted into two adjacent notches 12, the length of the portion protruding from the second notch 12 will be less than 50% of the arrangement pitch P, and it will be difficult to obtain sufficient connecting strength even if that portion is folded back. Also, if the length dimension L is 200% or more of the arrangement pitch P, the insertion piece 15 will be too long and its tension will be weak, making it difficult to easily insert it into the notches 12.

[0022] As described above, in this embodiment, each notch 12 of the first end 11 of the belt 3 is provided from below the top edge to above the bottom edge of the belt 3 so that the notches 12 do not reach the top or bottom edges of the belt 3. With this, even if a strong external force acts on the first end 11 of the belt 3 in the width direction, the external force is received by the top edge or bottom edge of the first end 11, making it difficult for the external force to act on the inward notches 12. Therefore, it is possible to prevent the belt 3 from tearing starting from the notches 12. [Explanation of symbols]

[0023] 1 sun visor 2 blank sheets 3 Belt 5 Eaves 11 First end 12 Cut 14 Second end 15 Insert L Length of the insert P: Notch arrangement pitch

Claims

1. A sun visor made of a single blank sheet (2) with the thickness direction in the front-to-rear direction, The blank sheet (2) is integrally provided with a strip-shaped belt (3) extending in the left-right direction and a tongue-shaped eaves (5) connected to the center of the lower side of the belt (3), A first end (11), which is one of the left and right ends of the belt (3), is provided with a plurality of notches (12) extending in the vertical direction from below the upper edge of the belt (3) to above the lower edge thereof, The sun visor is characterized in that an insertion piece (15) that can be inserted into each notch (12) is provided at a second end (14) which is the other of the left and right ends of the belt (3).

2. The plurality of notches (12) in the first end (11) are provided at equal intervals in the left-right direction, 2. The sun visor according to claim 1, wherein the length (L) in the left-right direction of the insertion piece (15) of the second end (14) is set to be greater than the arrangement pitch (P) of the notches (12).

3. 3. The sun visor according to claim 2, wherein the length (L) of the insertion piece (15) is set to be 150% or more and less than 200% of the arrangement pitch (P) of the notches (12).

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