Curtain hook

Abstract

To reduce height adjustment of a hook body more than a conventional pitch interval while maintaining strength of a tooth part.SOLUTION: A curtain hook 10 has an insertion rod 12 capable of upward insertion in an upper end tack part of a curtain, a main rod 11 following a lower end part of the insertion rod 12 and extending upward in parallel to the insertion rod 12, rack-like tooth parts 11a, 11b formed in multi-stages in a longitudinal direction of the main rod 11, and a hook body (an adjuster hook 13) which has claw parts 13b, 13c in a lower part engaging the tooth parts in a ratchet type and a hook part 13e engaging a hanging ring of a curtain rail runner in an upper part. In such a curtain hook, a plurality of columns of rack-like tooth parts 11a, 11b are formed in the longitudinal direction of the main rod 11, and pitch intervals of the tooth parts 11a, 11b are displaced vertically among a plurality of columns.SELECTED DRAWING: Figure 3C

Description

[Technical Field]

[0001] The present invention relates to a curtain hook. [Background technology]

[0002] Curtain hooks are used to attach curtains to curtain rails. A simple and inexpensive curtain hook is made from wire, which is made by bending a single wire to form an insertion rod, main rod, and hook part as a single unit. Wire curtain hooks cannot adjust the height of the hook part, so multiple types of curtain hooks are required depending on the installation position (height) of the curtain.

[0003] On the other hand, curtain hooks with adjustable hook heights, such as those disclosed 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.

[0004] As shown in Figure 7, the insertion rod 22 is inserted upward into the tuck portion at the top end of the curtain C. Rack-shaped teeth 21a are formed in multiple stages along the longitudinal direction of the main rod 21. The claws 23b of the hook body 23 engage with these teeth 21a in a ratchet-like manner. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Patent No. 2588160 (Figure 3) [Patent Document 2] Japanese Patent Application Laid-Open No. 8-256901 (Fig. 3) DISCLOSURE OF THE INVENTION [Problem to be solved by the invention]

[0006] In most conventional curtain hooks 20, the teeth 21a are formed at 5mm intervals. If the intervals are shorter than 5mm, the teeth 21a will be elastically deformed by the weight of the curtain C and will not be strong enough.

[0007] For this reason, conventional curtain hooks 20 are limited to adjusting the height of curtains in 5 mm increments (see Figure 6), and it is not possible to precisely adjust the top and bottom positions of the curtain C to less than 5 mm. As a result, in winter, cold air may enter through the bottom of the curtain C, and in the case of blackout curtains, light may leak through the top or bottom.

[0008] Therefore, an object of the present invention is to reduce the height adjustment of the hook body to a pitch interval smaller than that of the conventional pitch interval while maintaining the strength of the tooth portion. [Means for solving the problem]

[0009] In order to solve the above-mentioned problems, the curtain hook of the present invention comprises 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 parallel to 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 the hanging ring of a runner on a curtain rail, wherein the rack-shaped tooth portion is formed in multiple rows in the longitudinal direction of the main rod and the pitch spacing of the tooth portion is shifted vertically between the multiple rows. [Effects of the Invention]

[0010] According to the curtain hook of the present invention, the height adjustment of the hook body can be reduced compared to the conventional pitch interval while maintaining the strength of the tooth portion. [Brief explanation of the drawings]

[0011] [Figure 1A] 1 is a perspective view of a curtain hook according to an embodiment of the present invention. FIG. [Figure 1B]1 is a perspective view of a curtain hook according to an embodiment of the present invention. FIG. [Figure 1C] 1 is a side view of a curtain hook according to an embodiment of the present invention. FIG. [Figure 2A] FIG. 2A is a plan view taken along the line 2A-2A in FIG. 1C. [Figure 2B] FIG. 2B is a bottom view taken along the line 2B-2B in FIG. 1C. [Figure 3A] FIG. 2 is a perspective view of the main body of the curtain hook. [Figure 3B] FIG. 2 is a perspective view of the main body of the curtain hook. [Figure 3C] FIG. 2 is a partially enlarged view of the main body of the curtain hook. [Figure 4A] FIG. [Figure 4B] FIG. [Figure 4C] FIG. [Figure 5] 10A to 10C are perspective views showing the state in which the height position of the adjuster hook is lowered in a stepwise manner. [Figure 6] FIG. 1 is a side view of a conventional curtain hook. [Figure 7] FIG. 1 is a side view showing a state in which a curtain is attached to a curtain rail using a conventional curtain hook. DETAILED DESCRIPTION OF THE INVENTION

[0012] An embodiment of a curtain hook of the present invention will be described below with reference to the drawings. Figures 1A to 1C are perspective views of a curtain hook 10 seen from different directions. Also, Figure 2A is a plan view taken along the line 2A-2A in Figure 1C, and Figure 2B is a bottom view taken along the line 2B-2B.

[0013] ●Main rod and insertion rod The curtain hook 10 has a main body (shown in white in Figures 1A-1C) made of a polymer resin by casting, which consists of a main rod 11 and an insert rod 12. The main rod 11 and the insert rod 12 are interconnected and integrated by a U-shaped connector 14 at the bottom.

[0014] The upper end 12a of the insertion rod 12 is bent outward in an arc shape to make it easier to insert upward into the entrance of the upper tuck part 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 insertion rod 12 are at approximately the same height.

[0015] ●Tooth part of main rod The horizontal cross section of the main rod 11 is approximately 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 tooth portion 11a is formed on this first surface.

[0016] 1A and 1B, the second surface is the side surface (front surface) on the near side, and the second teeth 11b are formed on this second surface. The first teeth 11a and the second teeth 11b are configured as inclined surfaces that gradually become thicker toward the bottom.

[0017] The first toothed portion 11a and the second toothed portion 11b are formed in a rack shape in multiple stages in the longitudinal direction of the main rod 11. The first toothed portion 11a and the second toothed portion 11b are configured to engage with the claws 13b and 13c of the adjuster hook 13, which is a hook body, in a ratchet-like manner.

[0018] That is, when adjuster hook 13 is moved from the upper end toward the lower end of main rod 11, claws 13b and 13c are elastically deformed and can climb over first toothed portion 11a and second toothed portion 11b. On the other hand, even if you try to move adjuster hook 13 upward along main rod 11, claws 13b and 13c of adjuster hook 13 engage with first toothed portion 11a or second toothed portion 11b of main rod 11, so it cannot be moved.

[0019] The ratio of the widths H1 and H2 of the first teeth 11a and second teeth 11b is 1 / 2 (see FIGS. 1A and 1C), and the width H2 of the second teeth 11b is twice the width H1 of the first teeth 11a. This is because the first teeth 11a are formed in two rows, while the second teeth 11b are formed in one row. In other words, the weight of the curtain acts on the first teeth 11a and the second teeth 11b with approximately the same magnitude.

[0020] 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.

[0021] ●Adjuster hook 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 its diameter becomes smaller as it approaches the tip.

[0022] 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.

[0023] Upward claws 13b and 13c are provided to protrude toward the inner space of the base end portion 13a, that is, one claw 13c extends toward between the pair of left and right claws 13b.

[0024] The left and right claws 13b are configured to engage with the first toothed portion 11a of the main rod 11 in a ratchet-like manner. The front claw 13c is configured to engage with the second toothed portion 11b of the main rod 11 in a ratchet-like manner.

[0025] Tooth pitch interval As shown in Figures 3A to 3C, the first toothed portion 11a and the second toothed portion 11b are formed at equal intervals in the vertical direction at pitch intervals P1 and P2. The pitch interval P1 of the first toothed portion 11a and the pitch interval P2 of the second toothed portion 11b are the same. However, the pitch intervals P1 and P2 are shifted from each other by half a pitch.

[0026] That is, 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 and 13c of the adjuster hook 13 alternately ride up onto the first tooth portion 11a and the second tooth portion 11b.

[0027] 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 prevents cold air from entering through the bottom edge of the curtain in winter, and light from leaking from the top or bottom edge of blackout curtains.

[0028] Furthermore, because the curtain height can be precisely adjusted in 2.5 mm increments, for example, when the curtain is closed in A-hanging position, the visibility of the curtain rail can be made constant in the horizontal direction. Furthermore, when the curtain is closed in B-hanging position as shown in Figure 7, the upper edge of the curtain can be made to be in a horizontal straight line, 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.

[0029] Summary Although the above describes an embodiment of the present invention, the embodiment is merely a typical example of the present invention, and the present invention is not limited to the above embodiment. Various modifications are possible without departing from the spirit of the present invention. For example, in the above embodiment, the first tooth portions 11a are formed in two rows in the longitudinal direction of the main rod 11, and the second tooth portions 11b are formed in one row. However, it is also possible to configure both tooth portions 11a, 11b in two rows. That is, in the above embodiment, it is also possible to divide the second tooth portions 11b in half in the width direction and configure them 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 second tooth portions 11b.

[0030] Furthermore, by ensuring sufficient widths H1 and H2 of both tooth portions 11a and 11b, it is possible to configure both first tooth portion 11a and second tooth portion 11b in a single row. In this case, the single row of tooth portions 11a and 11b can be formed facing each other on both the left and right sides of main rod 11, or both tooth portions 11a and 11b can be formed in parallel on the front surface of main rod 11.

[0031] In addition, in the above embodiment, the first tooth portions 11a and the second tooth portions 11b are formed at a pitch interval of 5 mm, but if the strength of the polymer resin that is the material of the curtain hook 10 can be strengthened more than conventionally, it is possible to reduce the pitch interval to less than 5 mm. Alternatively, the number of double rows of the first tooth portions 11a and the second tooth portions 11b can be increased to distribute the load, thereby reducing the pitch interval to less than 5 mm.

[0032] Furthermore, it is also possible to form the teeth in three rows along the length of the main rod 11, with the pitch intervals of the teeth in each row offset by one-third, or to form the teeth in four rows, with the pitch intervals of the teeth in each row offset by one-quarter, thereby allowing for more precise adjustment of the height of the hook body. [Explanation of symbols]

[0033] 10: Curtain hook 11: Main rod 11a: First tooth portion 11b: Second tooth portion 11c: Guide groove 12: Insertion rod 12a: Upper end 13: Adjuster hook (hook body) 13a: Base end 13b, 13c: Claw part 13d: Plate-shaped protrusion 13e: Hook portion 14: Connection part H1, H2: Width of tooth part P1, P2: Tooth pitch interval

Claims

1. A curtain hook having an insertion rod that can be inserted upward into the tuck portion at the top 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 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 runner of a curtain rail, A curtain hook characterized in that the rack-shaped tooth portions are 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.

2. 2. The curtain hook according to claim 1, wherein the pitch intervals of the tooth portions are offset by half a pitch in the vertical direction between the rows of the tooth portions.

3. 3. The curtain hook according to claim 2, wherein the pitch interval of the tooth portions is 5 mm, and the offset of half a pitch interval between the plurality of rows is 2.5 mm.

4. A curtain hook according to claim 1, characterized in that first and second tooth portions constituting the tooth portion are formed on the first and second longitudinal surfaces of the main rod, respectively, and the pitch intervals between the first and second tooth portions are offset by half a pitch interval.

5. 5. The curtain hook according to claim 4, wherein 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.

6. 6. The curtain hook according to claim 1, wherein the curtain hook is made of a polymer resin.

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