JPH0531997Y2 - - Google Patents

Description

[Detailed explanation of the invention] [Industrial application field] This invention enables height adjustment in the vertical direction.
This invention relates to an improvement in a so-called Asia star type plastic curtain hook.

[Conventional technology]

Conventional curtain hooks of this kind, for example,
As shown in the figure, a hook body 12 with a U-shaped cross section and a curtain runner locking rod 11 is attached to a main body 10 having curtain fixing rods 9 on the back side, and a guide forming the front surface of the main body. The bent free end portions 14 of the hook body 12, which are opposed to each other, are formed with engaging pawls for detents, and downward serrations that engage with the engaging pawls. The protrusion 15 is formed on the back surface of the main body part 10 so that the saw teeth protrude repeatedly in both left and right directions, thereby making it possible to fix the height position.

[Problem that the invention attempts to solve]

However, in conventional curtain hooks of this type, the engaging claws are formed inside the hook body 12, and the downward serrations 15 are formed on the back surface of the main body so that the serrations protrude repeatedly in both left and right directions. If you slide it,
The force required to move the engaging claw from the bottom to the top of the downward serrated projection 15 also requires a force that resists the elasticity of the hook body 12 itself made of plastic material, and therefore it is smooth. Furthermore, as the engaging pawl moves on the downward serrated projection 15, the hook body 12 repeatedly opens and closes in both left and right directions.
This is not preferable because the insertion state of the second part changes, and it also poses a problem from the viewpoint of durability.

In this regard, the curtain hook of Utility Model Application Publication No. 62-15291 has downward serrations formed on the front side of the main body.
An engaging pawl that engages with the protrusion is externally formed on the lower part of the hook body, and the open end of the hook body is fitted into a guide groove formed in the main body part so as to slide. As shown in the figure, there is no risk of the hook body opening and closing from side to side as it slides. However, when the open end of the hook body is fitted into the guide groove of the main body part, it has a structure that exerts a ratchet effect on the front side of the main body part. Since it is necessary to go over the peaks of the serrated projections, a considerably large force is required at that time, and smooth sliding performance cannot be obtained, which is no different from the prior art described above. Further, this curtain hook has the problem that stable sliding performance cannot be obtained because the hook body is slid with the inner surface of the hook body touching the peaks of the downward serrations.

Therefore, the purpose of this invention is to make it possible to slide smoothly and extremely easily, to ensure that it stays in place, and to maintain a stable state of insertion of the hook body into the guide part of the main body at all times. To provide a curtain hook made of plastic that is durable and simple in structure.

[Means for solving problems]

Approximately H cross section with rods for attaching to the curtain on the back side
It consists of a main body part shaped like the shape of a curtain runner, and a hook body having a substantially U-shaped cross section and having a locking rod for the curtain runner. A pair of downward sawtooth projections extending vertically is formed on the inner surface of the back surface, and a pair of engaging claws extending upward from the back surface of the hook body are engaged with the downward sawtooth projections to slide and fix. made possible.

[Effect]

Therefore, since the engagement between the engaging pawl and the downward serrations is performed at the rear position of the hook body, the transition movement of the engaging pawl on the downward serrations is different from the conventional one with respect to the hook body. Since it is carried out not in the left-right horizontal direction, but in the front-rear and depth direction, the U-shaped hook body no longer opens and closes, and moreover, it is
Unlike the curtain hook of No. 15291, only the engaging claws move independently from the hook body in terms of ratchet movement, so the force for sliding the hook body is significantly reduced, allowing for smooth height adjustment.

〔Example〕

FIG. 1 is a side view showing an embodiment of the curtain hook according to this invention, and 1 is a rod 2 that fastens to the curtain.
3 is a hook body having a substantially U-shaped cross section and having a locking rod 4 for securing to the curtain runner. Further, reference numeral 5 denotes a guide section constituting the front surface of the main body, and the hook body 3 can be slid by fitting into this guide section 5. On the other hand, reference numerals 6, 6 are engagement claws provided on the back side of the hook body, and the bent free ends 3a, 3b of the hook body are opposed to each other.
They are formed in a pair in a diagonally upward direction from approximately the bottom position toward the back side. In addition, this engaging claw 6,
As shown in the figure, the downward serrated projections 7, 7 with which the hook 6 engages are formed so as to protrude repeatedly in the front direction at positions facing the back surface of the hook body 3. In particular, in this embodiment, as shown in FIG. 2, the main body part 1 has a substantially H-shaped cross section, and the front surface of the main body part serves as the guide part 5 for the hook body 3 as described above, while the downwardly serrated shape is used. By forming the protrusions 7, 7 on the inner surface of the back surface portion 8, the protrusions 7, 7 are arranged so as to face the hook body. Note that A is a downward angular projection provided to ensure that the main body is fixed to the curtain material.

Since this embodiment is as described above, when adjusting the height position, the force pushing down the hook body 3 with respect to the main body part 1 is applied only to the force of bending it in the front and back direction against the elasticity of the engaging claws 6, 6. Since it depends on the force of the bending motion, it can be done with extremely less force than in the past, and in the case of fixed fixing, the tips of the engaging claws 6, 6 are connected to the step part of the downward serrated projection. 7a.

Incidentally, in this embodiment, the engaging claws 6, 6 are formed at substantially lower positions of the bent free ends 3a, 3b of the hook body 3, but the present invention is not limited thereto. For example, an extension piece may be provided that extends slightly downward from the rear position of the hook body 3, and an engaging claw may be extended diagonally upward on this extension piece. However, from the viewpoint of improving the durability of the engaging claws 6, 6, facilitating and ensuring engagement, and further facilitating and stabilizing sliding, the hook body is foldable as in this embodiment. It is preferable to adopt a shape in which the free curved end protrudes toward the back side in a slightly rounded state, and to form an engaging pawl at this position on the back side.

[Effect of idea]

As described above, this invention adopts a configuration in which the engaging position of the engaging claw and the downward serrated projection is performed on the back surface of the hook body, so that the sliding state is stable and can be smoothly and easily without any hindrance. It is extremely practical in that it can be used in various ways, the engagement is reliable, and the durability is improved.

[Brief explanation of the drawing]

Fig. 1 is a side view showing one embodiment of the curtain hook according to this invention, Fig. 2 is a plan view thereof, Fig. 3 is a front view thereof, Fig. 4 is a rear view thereof, and Fig. 5 is a conventional example. FIG. 1... Main body, 2... Locking rod, 3... Hook body, 4... Locking rod, 5... Guide portion, 6, 6... Engaging pawl, 7, 7... Downward serration protrusion.

Claims (1)

[Scope of utility model registration request] Approximately H cross section with rods for attaching to the curtain on the back side
It consists of a main body part shaped like the shape of a curtain runner, and a hook body having a substantially U-shaped cross section and having a locking rod for the curtain runner. A pair of downward sawtooth projections extending vertically is formed on the inner surface of the back surface, and a pair of engaging claws extending upward from the back surface of the hook body are engaged with the downward sawtooth projections to slide and fix. A plastic curtain hook that is characterized by the following features: