JPH033506B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Technical Field The present invention relates to a joint device for rotatably connecting the arms of a doll around the shoulders.

PRIOR ART AND ITS DISADVANTAGES Conventionally, joint devices are known that connect a doll's arm to the shoulder in a rotatable or vertically movable manner. Another drawback was that the range of movement was narrowed if the shape and lines were not distorted.

OBJECTS OF THE INVENTION In view of the above-mentioned points, an object of the present invention is to provide a shoulder joint device for a doll that has a relatively simple configuration and has a large range of motion without changing the shape and line of the shoulder.

Embodiment of the Invention Next, an embodiment of the invention will be described with reference to the drawings.

A is a doll's arm made of synthetic resin such as vinyl chloride resin, and a three-quarter spherical hollow shell part 1 is integrally formed at the base (base end) of the arm, and a hollow shell part 1 is formed at the tip of the hollow shell part. A circular hole 2 is provided that communicates the inside and outside.

A sphere 3 is rotatably provided in the hollow shell 1, and one end of a connecting rod 4 having a diameter smaller than that of the circular hole 2 is fixed to the sphere. A disc-shaped stop plate 5 is fixed to the other end.

B is the hollow shoulder of the doll, which is formed into a navel shoulder. The shoulder has a circular hole 6 at its tip that communicates the inside and outside. Then, the circular hole 6 is connected to the arm A.
It has a diameter that is large enough to rotatably fit a part of the hollow shell 1 at the base.

Furthermore, a fixing plate 7 having a spherical curved surface that is convex inward is provided inside the shoulder hole 6. The fixing plate has a vertically elongated hole 8 in the center. This elongated hole may be formed in a circular fixing plate, or it may be formed between a pair of left and right fixing plates by slightly spacing them apart. In either case, the width of the elongated hole is larger than the diameter of the connecting rod 4 of the arm and smaller than the diameter of the stop plate 5.

Then, with the hollow shell part 1 of the arm fitted into the circular hole 6, the connecting rod 4 is passed through the long hole 8 of the fixing plate 7,
A stop plate 5 is slidably abutted on the inner curved surface of the fixing plate.

With the above configuration, arm A is shown as arrow R ₁ in FIG.
As shown, the connecting rod 4 is rotatable around the sphere 3 within the range in which it comes into contact with the periphery of the circular hole 2 .
In addition, the connecting rod 4 is connected to the sphere 3 as shown by arrow R ₂ in FIG. It can swing freely around the center. Therefore, arm A
is the period from the maximum rotation range around the sphere when the connecting rod 4 is at the top position of the long hole 8 to the maximum rotation range around the sphere when the connecting rod is at the bottom position of the long hole. can be rotated in any direction.

Fig. 3 shows that an arm A is formed into a hollow shape, and a core wire 9 such as a flexible wire whose one end is connected to a sphere 3 is extended inside the arm so that the arm can be bent in any direction at the joint. , shows what happens when that state can be maintained. In this case, the range of rotation of the arm A relative to the sphere 3 is limited to the range where the core wire 9 contacts the inner hole 2b of the hollow shell 1. However, if the diameter of the inner hole is equal to the diameter of the outer hole 2a, , it is possible to rotate within a range that is not substantially different from that without the wire.

Effects of the Invention As described above, according to the present invention, a substantially spherical hollow shell having a circular hole communicating between the inside and outside is provided at the base of the doll's arm, and a sphere is rotatably provided within the hollow shell. , a part of the base of the arm is rotatably fitted into a circular hole provided at the tip of the hollow shoulder of the doll body, and one end is fixed to the sphere and protrudes outward from the circular hole of the arm. A connecting rod is passed through a vertically elongated hole in a fixing plate provided inside the circular hole of the shoulder portion, and a stop plate is fixed to the other end of the connecting rod so as to slidably abut on the inner convex curved surface of the fixing plate. Therefore, the fit between the spherical shell of the arm and the circular hole of the shoulder allows the arm to rotate without distorting the shape and line of the shoulder, and the curved surface on which the stop plate and fixing plate can slide Due to the contact, the range of rotation of the arm is significantly expanded.

[Brief explanation of drawings]

The drawings show one embodiment of the invention,
FIG. 1 is a sectional view of an embodiment in which the arm does not have a core wire, and FIG. 2 is a perspective view showing the main parts on the arm side. FIG. 3 is a sectional view of an embodiment in which the arm has a core wire. A... Arm, 1... Hollow spherical shell, 2... Circular hole,
3... Sphere, 4... Connecting rod, 5... Stopping plate, B...
...shoulder, 6...circular hole, 7...fixing plate, 8...vertical hole, 9...core wire.

Claims (1)

[Scope of Claims] 1 (a) An approximately spherical hollow shell having a circular hole communicating between the inside and outside is provided at the base of the doll's arm, and a sphere is rotatably provided within the hollow shell, and (b) the above-mentioned A part of the base of the arm is rotatably fitted into a circular hole provided at the tip of the hollow shoulder of the doll body, and (c) one end is fixed to the sphere and projects outward from the circular hole of the arm. (d) a stop plate at the other end of the connecting rod that slidably abuts on the inner convex curved surface of the fixing plate; (E) Shoulder joint device for dolls.