JPH0120889Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an engagement device for connection that is attached to accessories such as necklaces and pendants.

Originally, the engaging device for this type of jewelry must be extremely compact so as not to be noticeable, be easy to engage and disengage, and be robust.

However, all of the conventional methods had advantages and disadvantages and were not satisfactory.

The present invention has been developed in view of the above points, and has deep and shallow notch grooves formed on one end surface of the outer cylinder in directions orthogonal to each other, and the base end of the rod inserted into the outer cylinder. is provided with a head connected to one end of the accessory, a hook is formed at the tip that can be freely engaged with and detached from the other end of the accessory, and the rod is oriented in the direction in which the opening of the hook expands between the other end of the outer cylinder and the other end of the accessory. The rod head is rotatably provided so that it can be selectively engaged with the two types of notched grooves in the outer cylinder, making it compact and robust, and extremely convenient to use with easy engagement and disengagement operations. The object of the present invention is to obtain an engaging device for an accessory.

An embodiment of the configuration of the present invention shown in the drawings will be described in detail below.

The engagement device 1 consists of an outer cylinder 2 and an inner rod 3. The outer cylinder 2 is constructed in the shape of a pipe, one end surface is formed into an inwardly inclined surface 4, and the other end surface has a cross shape. Deep grooves 5 and shallow grooves 6, which are deep and shallow cut grooves, are provided at every other groove as shown in FIG. The inner rod 3 has a flat head 10 at the base end of the rod 9 that is inserted into the outer cylinder 2, and a hole 11 is bored in the head 10 to which the ring B at one end of the chain of the accessory A is connected. At the same time, its tip portion forms an engaging portion 12 that is selectively fitted into the deep groove 5 or the shallow groove 6 of the outer cylinder 2. On one end, a hook 14 is formed which has an opening 13 that is detachably connected to the ring C at the other end of the chain of the accessory A.
Two wide and narrow states are formed between the two. Further, a stopper 15 is provided near the tip of the rod 9, and a spring 16 is elastically mounted between the stopper 15 and the partition wall surface 7 of the cylinder 2 to bias the opening 13 of the tip hook 14 in the direction of expansion.

With this structure, in order to engage the ring C at the other end of the chain of the accessory A, grasp the head 10 of the inner rod 3 and pull it against the tension of the spring 16.
Then, after the engaging part 12 at the tip is rotated so as to face the deep groove 5, the head 10 is released and the spring 1 is released.
When the engaging part 12 of the head 10 is inserted into the deep groove 5 by the tension of 6, the opening 13 of the hook 14 at the tip of the rod 9 is opened with a wide gap formed between it and the inclined surface 7 of the outer cylinder 2. Insert and lock the retaining ring C. After confirming that the head 10 is latched, grasp and pull the head 10 again, rotate the protrusion 12 at the tip 90 degrees so that it faces the shallow groove 6, and release the head 10 to release the spring 16.
Due to the tension, the protrusion 12 is fitted and held in the shallow groove 6, and a slight gap is created between the opening 13 of the hook 14 at the tip of the rod 9 and the inclined surface 7, but it is not large enough to cause the ring C to separate. The chain is securely connected without slipping out from the hook 14. In addition, when removing the chain from the engagement device 1, reverse the above operation and insert the head 1 of the inner rod 3.
0 from the shallow groove 6 of the inner cylinder 2,
When the rod 9 is rotated 90 degrees and inserted into the deep groove 5, the opening 13 of the hook 14 at the tip of the rod 9 forms a large gap with the inclined surface 4 of the inner cylinder 2, so that the chain can be easily removed.

In the above embodiment, the notch groove is provided at the end of the outer cylinder, but it may also be provided on the partition surface 7.

As described in detail above, the present invention has an extremely simple structure in which only the inner rod and spring are housed inside the outer cylinder, so it can be made compact and unobtrusive during use without spoiling the aesthetic appearance. In addition, engagement and disengagement is achieved by pulling out the inner rod and rotating it to switch between shallow and deep grooves on the head and inner cylinder, making it extremely easy to operate and ensuring secure engagement even when external forces are applied. On the one hand, the chain does not come off unnecessarily, and on the other hand, it has various advantages such as being able to quickly remove the chain and is easy to use.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway exploded perspective view of the present invention, FIG. 2 is a vertical side view when the chain is removed, and FIG. 3 is a vertical side view when the chain is connected. 1: Engagement device, 2: Outer cylinder, 3: Inner rod, 4: Inclined surface, 5: Deep groove, 6: Shallow groove, 9: Rod, 10: Head, 13: Opening, 14: Hook, 16: Spring, A: Accessory, B, C: Ring.

Claims (1)

[Scope of utility model registration request] Near one end of the outer cylinder, two deep and shallow notch grooves are formed in directions orthogonal to each other, and the base end of the rod inserted into the outer cylinder is provided with a head that connects to one end of the accessory, and the tip is connected to the end of the accessory. A hook is formed that can be freely engaged and detached from the other end, and the opening of the hook urges the rod in a direction in which it expands between the other end surface of the outer cylinder, and the head of the rod is attached to the two types of the outer cylinder. An engagement device for an accessory that is rotatably provided so as to be selectively engaged with a notched groove.