JPS5811259Y2 - handcuffs for keychain - Google Patents

Description

[Detailed Description of the Invention] This invention relates to so-called mini handcuffs for key chains.

Previously known mini handcuffs of this type include two semicircular curved plates of the same shape with a slightly wider side plate integrally connected to the base side, and a similar semicircular rotation between the tips of the curved plates. The curved plate is pivotally mounted, and a locking mechanism for the rotating curved plate is housed between the side plate parts and fixed at an appropriate interval. In order to close the resulting gap, a metal plate of an appropriate thickness is interposed along the outer periphery of the side plate, or a side wall of an appropriate thickness is integrally formed on the inner surface of one of the side plates along the outer periphery. Insert the mounting pins into the multiple holes pre-prepared on the side plate,
Generally, a locking mechanism is pivotally attached to some of the mounting pins and caulked to fix both side plate parts.

However, according to this method, the semicircular curved plate part and its side plate parts are all formed by die-casting, which increases the cost. Due to caulking, the manufacturing process has been diversified and complicated.

This project was devised to solve these various shortcomings.
The embodiments shown in the drawings will be specifically described below.

The template shown in Fig. 2 is a template formed by punching out a metal plate of appropriate thickness, and each half body 1, 1 consists of a semicircular curved plate part 2, 2' and wide side plate parts 3, 3' connected thereto. ' are formed symmetrically with respect to the connecting portion 4 having a predetermined width.

Side plates 5 and 6 having the same width as the connecting portion 4 are provided on both sides of the connecting portion 4.
has been extended.

The side plate 6 on the right side (in the figure) is slightly longer than the side plate 5 on the left side.

The corresponding tips of the semicircular curved plate portions 2 and 2' are provided with through holes 7 and 7' for pivotally mounting a rotating semicircular curved plate to be described later.

Further, a through hole 8 for pivotally mounting a locking lever to be described later is bored at a position slightly to the left (in the drawing) of the center of the side plate portion 3.

A hookhole-shaped hole 9 is bored approximately in the center of the side plate portion 3'.

Further, two through holes 10, 10 for attaching rings, which will be described later, are bored in the center of the connecting portion 4 at appropriate intervals.

In the figure, reference numeral 11 denotes a rotating semicircular curved plate having approximately the same curvature as the semicircular curved plate, and a serrated tooth portion 12 is provided on the outer end surface extending an appropriate length from its tip.

As shown in FIG. 3, this tooth portion is formed by a slope descending from left to right and a vertical surface.

Reference numeral 13 denotes a locking lever, which is formed of a metal plate slightly narrower than the connecting portion 4 into an elongated plate shape slightly wider than the side plate portions 3 and 3', and is positioned slightly to the left (in the figure) of the central portion. A support shaft 1 having a thickness that matches the corresponding through hole 8 described above.
4 is provided protrudingly, and the rotating semicircular curved plate 1 is provided at the right end.
A pawl 15 is formed which engages with the tooth portion 12 of the lever 1, and a lever portion 16 is formed at the left end.

The left side (in the figure) of the claw 15 is a vertical surface.

Reference numeral 17 is a leaf spring that is bent at the center and has the property of springing outward.

To assemble the handcuffs, first fit the support shaft 14 of the locking lever 13 into the through hole 8 of the side plate 3, and then insert the halves 1, 1' into the connecting part 4.
is bent inwardly at right angles at its upper and lower (in FIG. 2) edges so that the two halves 1, 1' face approximately parallel to each other.

The plate spring 1 is inserted between the lower part of the locking lever 13 and the connecting part 4.
7 so that one piece of the leaf spring 17 comes into contact with the upper surface of the connecting portion 4 and the other piece comes into contact with the lower end surface of the locking lever 13.

The side plates 5 and 6 extending from the connecting part 4 to both sides are connected to the third and fourth side plates.
As shown in the figure, it is bent to match the shape of the left and right lower ends of the side plates 3, 3'.

One end of the rotating semicircular curved plate 11 is rotatably attached to the through holes 7, 7' at the tips of the semicircular curved plate parts 2, 2'.

A ring 18 is attached to the through holes 10, 10 of the connecting portion 4.

19 is a chain connected to ring 18, and this chain 1
Another attachment at the other end of 9 connects a ring 18';
A similar handcuff (not shown) is attached to this ring 18'.

In this way, the key chain handcuff of the present invention is assembled.

At this time, the lever part 16 of the locking lever 13 is in a state of protruding leftward from the upper part of the side plate 5.

Since the pawl 15 of the locking lever 13 is constantly receiving a force in the direction of upward protrusion due to the elastic force of the leaf spring 17,
When the rotating semicircular curved plate 12 is rotated in the clockwise direction as shown in FIG. Circular curved plate 1
1 cannot be rotated counterclockwise.

Therefore, the ring formed by these two semicircular curved plates cannot be released, so if a key or the like is held in this ring, it will function as a key holder.

When the lever portion 16 is pushed in the direction of the arrow in FIG. 4 against the elasticity of the leaf spring 17, the locking lever 13 is rotated clockwise, the engagement between the tooth portion 12 and the pawl 15 is released, and the locking lever 13 is rotated. Dynamic semicircular curved plate 1
1 can freely rotate counterclockwise and the handcuffs will come off.

As mentioned above, according to the present invention, a new template is formed by punching out a metal plate of an appropriate thickness, and the engagement lever is bent by inserting the formed support shaft into the insertion hole of the side plate. Since it is clamped between the side plates, there is no need for the complicated process of inserting and caulking the mounting pins, and all processes can be performed by press working, which simplifies the manufacturing process and reduces costs. Moreover, it has the effect of producing mini-handcuffs that are comparable in quality.

[Brief explanation of the drawing]

Figure 1 is a perspective view of the handcuff according to the present invention, Figure 2 is a developed plan view of the template, Figure 3 is a central vertical cross-sectional view in the locked state, and Figure 4
The figure is a central vertical cross-sectional view of the locking lever in an unlatched state, and FIG. 5 is an explanatory view showing the operation of the locking lever. 1.1'...Half rest, 2,2'...Semi-circular curved plate part, 3゜3'...Side plate part, 4...
...Connection part, 5, 6...Side plate, 11...
・Rotating semicircular curved plate, 12... Teeth, 13...
...Latching lever, 15...Claw, 17...
...Plate spring.

Claims (1)

[Claims for Utility Model Registration] Two halves consisting of opposing side plate parts 3, 3' and opposing semicircular curved plate parts 2, 2' extending in a semicircular arc shape from the side plate parts 3, 3'. One end of a rotating semicircular curved plate 11 having a semicircular arc shape is rotatably pivoted between the tips of the semicircular curved plate parts 2 and 2' of the bodies 1 and 1'. The tooth portion 12 formed on the curved outer edge on the other end side of the circular curved plate 11 is connected to the side plate portions 3, 3'.
The plate spring 17 housed between the side plates 3 and 3' allows the claw 15 for locking the toothed portion at one end of the locking lever 13 to lock in the toothed portion 12. The lock lever 13 is rotatably pivoted between the side plate parts 3 and 3' so that the lock lever 13 can be rotated between the side plate parts 3 and 3'; Project outward; the lever part 1
In the handcuff for a key chain, the locking between the pawl 15 and the tooth portion 12 is released by pressing 6 against the force of the plate spring 17; A connecting portion 4 that integrally connects the circularly curved plate portions 2, 2', the side plate portions 3, 3', and the side plate portions 3, 3', and a connecting portion 4 extending linearly outward from both ends of the connecting portion 4. A through hole 7.7' is provided for pivotally mounting the rotating semicircular curved plate 11 at the tip of the semicircular curved plate portions 2, 2'.
, and the support shaft 1 of the locking lever 13 is attached to the side plate portions 3, 3'.
The template is formed by punching out a metal plate having a through hole 8 into which the connecting part 4 and the side plate part 3 are inserted.
, 3' at a right angle along the boundary line with the side plate parts 3, 3'.
A handcuff for a key chain, characterized in that semicircular curved plate parts 2, 2' are opposed in parallel, and the side plates 5, 6 are bent along the outer periphery of the side plate parts 3, 3'.