JP7495074B1 - Curtain hooks - Google Patents

Abstract

[Problem] To reduce the height adjustment of the hook body compared to the conventional pitch interval while maintaining the strength of the teeth. [Solution] The curtain hook 10 of the present invention has an insertion rod 12 that can be inserted upward into the tuck part at the top end of the curtain, a main rod 11 that is continuous with the lower end of the insertion rod 12 and extends upward in parallel with the insertion rod 12, rack-shaped teeth 11a, 11b formed in multiple stages in the longitudinal direction of the main rod 11, and a hook body (adjuster hook 13) having claws 13b, 13c at the bottom that engage with the teeth in a ratchet-like manner and a hook part 13e at the top that engages with a hanging ring of a curtain rail runner, characterized in that the rack-shaped teeth 11a, 11b are formed in multiple rows in the longitudinal direction of the main rod 11, and the pitch intervals of the teeth 11a, 11b are shifted from each other in the vertical direction between the multiple rows. [Selected Figure] Figure 3C

Description

The present invention relates to curtain hooks.

Curtain hooks are used to attach curtains to curtain rails. Simple and inexpensive curtain hooks are made from wire, which is made by bending a single piece of wire to form an insertion rod, main rod, and hook part as a single unit. Since the height of the hook part of wire curtain hooks cannot be adjusted, multiple types of curtain hooks are required depending on the installation position (height) of the curtain.

On the other hand, curtain hooks with adjustable hook heights, such as those in Patent Documents 1 and 2, are also widely used (see Figures 6 and 7). This type of curtain hook is generally made of polymer resin, with the main rod 21 and insertion rod 22 cast-molded into a U-shape from polymer resin, and the hook body 23 (adjuster hook) also cast-molded from polymer resin.

The insertion rod 22 is inserted upward into the upper end tuck portion of the curtain C as shown in Figure 7. Multiple rack-shaped teeth 21a are formed in the longitudinal direction of the main rod 21. The claw portion 23b of the hook body 23 engages with these teeth 21a in a ratchet-like manner.

Japanese Patent No. 2588160 (Fig. 3) JP-A-8-256901 (FIG. 3)

Most conventional curtain hooks 20 have teeth 21a spaced at 5mm intervals. If the pitch is shorter than 5mm, the weight of the curtain C will cause the teeth 21a to elastically deform and the strength will not be sufficient.

For this reason, conventional curtain hooks 20 limited curtain height adjustment to 5 mm increments (see Figure 6), and the top and bottom positions of the curtain C could not be finely adjusted to less than 5 mm. As a result, cold air could enter from the bottom of the curtain C in winter, and light could leak from the top or bottom in the case of a light-blocking curtain.

The objective of the present invention is to reduce the height adjustment of the hook body below the conventional pitch interval while maintaining the strength of the teeth.

In order to solve the above problems, the curtain hook of the present invention has an insertion rod that can be inserted upward into the upper tuck portion of the curtain, a main rod that is continuous with the lower end of the insertion rod and extends upward in parallel with the insertion rod, a rack-shaped tooth portion formed in multiple stages in the longitudinal direction of the main rod, and a hook body that has a claw portion at the bottom that engages with the tooth portion in a ratchet-like manner and a hook portion at the top that engages with a hanging ring of a curtain rail runner, the rack-shaped tooth portion is formed in multiple rows in the longitudinal direction of the main rod, and the pitch intervals of the tooth portions are shifted vertically between the multiple rows.

The curtain hook of the present invention allows the height adjustment of the hook body to be reduced compared to conventional pitch intervals while maintaining the strength of the teeth.

FIG. 1 is a perspective view of a curtain hook according to an embodiment of the present invention. FIG. 1 is a perspective view of a curtain hook according to an embodiment of the present invention. FIG. 2 is a side view of the curtain hook according to the embodiment of the present invention. FIG. 2A is a plan view taken along the line 2A-2A in FIG. 1C. FIG. 2B is a bottom view taken along the line 2B-2B in FIG. 1C. FIG. 2 is a perspective view of the main body of the curtain hook. FIG. 2 is a perspective view of the main body of the curtain hook. FIG. 2 is a partially enlarged view of the main body of the curtain hook. FIG. FIG. FIG. 11A to 11C are perspective views showing states in which the height position of the adjuster hook is lowered in stages. FIG. 1 is a side view of a conventional curtain hook. FIG. 1 is a side view showing a state in which a curtain is attached to a curtain rail using a conventional curtain hook.

Below, an embodiment of the curtain hook of the present invention will be described with reference to the drawings. Figs. 1A-1C are perspective views of the curtain hook 10 as viewed from different directions. Fig. 2A is a plan view taken along the arrows 2A-2A in Fig. 1C, and Fig. 2B is a bottom view taken along the arrows 2B-2B.

The main rod and the insert rod of the curtain hook 10 have a main body (white area in Fig. 1A-1C) made of a polymer resin by casting molding, which consists of a main rod 11 and an insert rod 12. The main rod 11 and the insert rod 12 are connected to each other by a U-shaped connector 14 at the bottom to be integrated.

The upper end 12a of the insertion rod 12 is bent outward in an arc shape to make it easier to insert it upward into the opening of the upper end tuck of the curtain. The main rod 11 extends upward in parallel with the insertion rod 12, and the upper ends of the main rod 11 and the insertion rod 12 are at approximately the same height.

The horizontal cross section of the main rod 11 is substantially rectangular, with a first surface and a second surface formed in the longitudinal direction of the main rod. That is, the "first surface" refers to both the left and right side surfaces in Figures 1A and 1B, and to a pair of front and rear side surfaces in Figure 1C. The first teeth 11a are formed on this first surface.

The second surface is the side surface (front surface) on the near side in Figs. 1A and 1B, and the second tooth portion 11b is formed on this second surface. The first tooth portion 11a and the second tooth portion 11b are configured as inclined surfaces that gradually become thicker toward the bottom.

The first tooth portion 11a and the second tooth portion 11b are formed in a rack shape in multiple stages in the longitudinal direction of the main rod 11. The first tooth portion 11a and the second tooth portion 11b are configured to engage with the claw portions 13b and 13c of the adjuster hook 13, which is a hook body, in a ratchet-like manner.

In other words, when the adjuster hook 13 is moved from the upper end to the lower end of the main rod 11, the claws 13b, 13c are elastically deformed and can climb over the first tooth portion 11a and the second tooth portion 11b. On the other hand, even if you try to move the adjuster hook 13 upward along the main rod 11, the claws 13b, 13c of the adjuster hook 13 engage with the first tooth portion 11a or the second tooth portion 11b of the main rod 11, so it cannot be moved.

The ratio of the widths H1, H2 of the first tooth portion 11a and the second tooth portion 11b is 1/2 (see Figures 1A and 1C), and the width H2 of the second tooth portion 11b is twice the width H1 of the first tooth portion 11a. This is because the first tooth portion 11a is formed in two rows, while the second tooth portion 11b is formed in one row. In other words, the weight of the curtain acts on the first tooth portion 11a and the second tooth portion 11b with approximately the same magnitude.

A guide groove 11c extending in the longitudinal direction of the main rod 11 is formed on the first surface on which the first tooth portion 11a of the main rod 11 is formed. The plate-shaped protrusion 13d of the adjuster hook 13 is configured to slidably fit into this guide groove 11c.

4A-4C, the adjuster hook 13 is formed in an inverted U-shape, and its tip 13e is inserted into the hanging ring of the runner of the curtain rail. The tip 13e of the adjuster hook 13 is bent slightly outward to make it easier to insert into the hanging ring of the runner, and is formed with a smaller diameter toward the tip.

The adjuster hook 13 has a box-shaped frame-like base end 13a at its lower end. This base end 13a is U-shaped in plan view and is attached to the upper end of the main rod 11. When attached, the plate-shaped protrusion 13d of the base end 13a is slidably fitted into the guide groove 11c of the main rod 11.

Upward claws 13b and 13c protrude toward the inner space of the base end 13a. That is, one claw 13c extends toward between the pair of left and right claws 13b.

The left and right claws 13b are configured to engage with the first tooth portion 11a of the main rod 11 in a ratchet-like manner. The front claw portion 13c is configured to engage with the second tooth portion 11b of the main rod 11 in a ratchet-like manner.

● Pitch interval of teeth The first teeth 11a and the second teeth 11b are formed at equal intervals in the up-down direction at pitch intervals P1 and P2, as shown in Figures 3A to 3C. The pitch interval P1 of the first teeth 11a and the pitch interval P2 of the second teeth 11b are the same. However, the pitch intervals P1 and P2 are shifted from each other by half a pitch.

In other words, the second tooth portion 11b is located in the vertical center of the pitch interval P1 of the first tooth portion 11a. Therefore, when the adjuster hook 13 is moved from the upper end to the lower end of the main rod 11, the claw portions 13b, 13c of the adjuster hook 13 alternately ride up onto the first tooth portion 11a and the second tooth portion 11b.

In this embodiment, the pitch intervals P1 and P2 are set to 5 mm, the same as conventional curtain hooks. However, because the pitch intervals P1 and P2 are shifted by half a pitch in the vertical direction, it is possible to adjust the height position of the adjuster hook 13 in 2.5 mm increments, as shown in Figures 5(a), (b), and (c). This makes it possible to prevent cold air from entering through the bottom edge of the curtain in winter, or light from leaking from the top or bottom edge in the case of blackout curtains.

In addition, since the height of the curtain can be precisely adjusted in increments of 2.5 mm, for example, when the curtain is closed in hanging position A, the visibility of the curtain rail can be made constant in the horizontal direction. Also, when the curtain is closed in hanging position B as shown in Figure 7, the upper end of the curtain can be made to be in a straight line in the horizontal direction, reliably hiding the curtain rail 30. In this way, the curtain hook of this embodiment can improve the appearance of the curtain when viewed from inside the room.

Summary Although the embodiment of the present invention has been described above, the embodiment is a typical example of the present invention, and the present invention is not limited to the embodiment, and various modifications are possible without departing from the spirit of the present invention. For example, in the embodiment, the first tooth portion 11a is formed in two rows in the longitudinal direction of the main rod 11, and the second tooth portion 11b is formed in one row, but it is also possible to configure both tooth portions 11a and 11b in two rows. That is, in the embodiment, it is also possible to divide the second tooth portion 11b in the width direction and configure it in two rows. In this case, a reinforcing rib can be formed linearly in the longitudinal direction of the main rod 11 between the two rows of the second tooth portions 11b.

Also, by ensuring sufficient widths H1 and H2 for both tooth portions 11a and 11b, it is possible to configure both the first tooth portion 11a and the second tooth portion 11b in a single row. In this case, the tooth portions 11a and 11b in a single row can be formed facing each other on both the left and right sides of the main rod 11, or both tooth portions 11a and 11b can be formed in parallel on the front surface of the main rod 11.

In addition, in the above embodiment, the first tooth portion 11a and the second tooth portion 11b are formed at a pitch interval of 5 mm, but if the strength of the polymer resin from which the curtain hook 10 is made can be strengthened more than before, it is possible to reduce the pitch interval to less than 5 mm. Alternatively, the number of rows of the first tooth portion 11a and the second tooth portion 11b can be increased to distribute the load, thereby reducing the pitch interval to less than 5 mm.

Furthermore, it is also possible to form the teeth in three rows along the length of the main rod 11 and shift the pitch intervals of the teeth in each row by one-third, or to form the teeth in four rows and shift the pitch intervals of the teeth in each row by one-quarter. This allows for more precise adjustment of the height of the hook body.

10: Curtain hook 11: Main rod 11a: First tooth portion 11b: Second tooth portion 11c: Guide groove 12: Insertion rod 12a: Upper end portion 13: Adjuster hook (hook body)
13a: base end portion 13b, 13c: claw portion 13d: plate-shaped protrusion 13e: hook portion 14: connecting portion H1, H2: width of tooth portion P1, P2: pitch interval of tooth portion

Claims (6)

A curtain hook having an insertion rod that can be inserted upward into a tuck portion at the upper end of a curtain, a main rod that is continuous with the lower end of the insertion rod and extends upward in parallel with the insertion rod, a rack-shaped tooth portion formed in multiple stages in the longitudinal direction of the main rod, and a hook body having a claw portion at the lower part that engages with the tooth portion in a ratchet type manner and a hook portion at the upper part that engages with a hanging ring of a runner of a curtain rail,
A curtain hook characterized in that the rack-shaped teeth are formed in multiple rows in the longitudinal direction of the main rod, and the pitch intervals of the teeth are shifted vertically between the multiple rows. The curtain hook of claim 1, characterized in that the pitch intervals of the teeth are offset by half a pitch in the vertical direction between the multiple rows. The curtain hook of claim 2, characterized in that the pitch interval of the teeth is 5 mm, and the half-pitch offset between the multiple rows is 2.5 mm. The curtain hook of claim 1, characterized in that the first and second teeth constituting the tooth portion are formed on the first and second longitudinal faces of the main rod, respectively, and the pitch intervals of the first and second teeth are offset by half a pitch. The curtain hook of claim 4, characterized in that the first surface of the main rod is formed on both the left and right sides of the main rod, and the second surface is formed on the front surface of the main rod. The curtain hook according to any one of claims 1 to 5, characterized in that it is made of a polymeric resin.

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