JOINT ASSEMBLY FOR DOLLS

Disclosed is a joint assembly for dolls for connecting two limb portions. A first joining surface and a second joining surface are disposed at a connecting position of the limbs and a first embedding hole and a second embedding hole are formed at the center of the first joining surface and second joining surface respectively, and an expanding portion is formed and extended inwardly along an opening of each of the embedding holes for inserting an embedding column with circular protrusions at both ends, so as to improve the convenience of installation. The circular protrusions and the expanding portions can improve the smoothness of movement and prevent the limb portions from falling out.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

The technical content of the present invention will become apparent with the detailed description of preferred embodiments and the illustration of related drawings as follows.

With reference toFIGS. 2,3and4for an exploded view, a perspective view and a cross-sectional view of a joint assembly for dolls in accordance with a preferred embodiment of the present invention respectively, the joint assembly for dolls2is provided for connecting a plurality of limb portions3and setting two adjacent limb portions3into a movable state, and the limb portions3are made of soft rubber, and the joint assembly for dolls2comprises a first joining surface21, a second joining surface22and an embedding column23.

The first joining surface21is a planar surface formed at a connecting position of one of the limb portions3and has a first embedding hole211with a diameter ø1 formed at the center of the first joining surface21. A first expanding portion212with a diameter ø2is formed and extended along inwardly extended along an opening of the first embedding hole211to a bottom of the first embedding hole211, and ø2>ø1. In addition, a first cambered surface213is disposed on a side of the first joining surface21, and the first joining surface21has a first circular slot214formed at a position adjacent to the first embedding hole211.

The second joining surface22is formed at a joining position of another limb portion3, and the second joining surface22is a substantially planar surface disposed opposite to the first joining surface21and has a second embedding hole221with a diameter ø3 formed at the center of the second joining surface. In addition, a second expanding portion222with a diameter ø4 is formed and extended inwardly along an opening of the second embedding hole221to a bottom of the second embedding hole221, and ø4>ø3. In addition, a second cambered surface223is disposed adjacent to a side of the second joining surface22, and the first cambered surface213and the second cambered surface223are disposed opposite to each other. In addition, the second joining surface22has a second circular slot224formed at a position adjacent to the second embedding hole221, and the first circular slot214and the second circular slot224are disposed opposite to each other.

The embedding column23has a first circular protrusion231and a second circular protrusion232disposed at both ends of the embedding column23respectively, and the embedding column23has a diameter ø5, and a cylindrical column body233with a diameter ø6 is formed at the center of the embedding column23, wherein ø5>ø6, and ø2=ø4≧ø5>ø1=ø3. During an assembling process, the first circular protrusion231at the end of the embedding column23is inserted into the first embedding hole211, such that the first circular protrusion231is movably snapped into the first expanding portion212, and the second circular protrusion232is inserted into the second embedding hole221, such that the second circular protrusion232is movably snapped into the second expanding portion222. Therefore, the first joining surface21and the second joining surface22can be attached with each other to provide a frictional force for the rotation and achieve the effect of positioning after turning the limb portions3. It is noteworthy that the first circular protrusion231and the second circular protrusion232have cambered surfaces, and the first expanding portion212and the second expanding portion222corresponding to the first circular protrusion231and the second circular protrusion232are cambered surfaces.

To provide a smooth rotation effect, other implementation modes of the embedding column of the present invention as shown inFIGS. 5 and 6are provided. The first circular protrusion231further has a first pattern portion2311concavely formed on a surface of the first circular protrusion231and the second circular protrusion232further has a second pattern portion2321concavely formed on a surface of the second circular protrusion232. InFIG. 5, the first pattern portion2311and the second pattern portion2321are staggered to form a mesh structure. InFIG. 6, the first pattern portion2311and the second pattern portion2321are arranged parallel to each other to form a strip structure. To further improve the lubricating effect, a lubricant grease24is coated onto the first pattern portion2311and the second pattern portion2321to maintain a good lubrication with the surfaces of the first expanding portion212and the second expanding portion222respectively.

With reference toFIG. 7for another implementation mode of a preferred embodiment of the present invention, the present invention further comprises stop portions2111,2211disposed separately in the first embedding hole211and the second embedding hole221, and the stop portions2111,2211are protruding plates integrally formed in the first embedding hole211and the second embedding hole221, and the stop portions2111,2211have a height precisely corresponding to the depth of the first pattern portion2311and the second pattern portion2321. Such arrangement not only provides the positioning and engagement effects for the rotation, but also snaps the first pattern portion2311and the second pattern portion2321to achieve the position limitation effect for rotating the joint assembly for dolls2in order to limit the angle of swaying the pair of limb portions3.