Combined tyre

Abstract

Disclosed is a combined tire, including a tire casing and a core. The tire casing is an annular member having a core groove around the periphery; the core is an annular member nested within the core groove of the tire casing in an interference fit, and forms a gap with the inner wall of the core groove of the tire casing. The present invention can ensure high production efficiency. The tire casing and the core of the present invention can employ materials of different hardness, offering better comfort.

Claims

1. A combined tire, comprising a tire casing and a core; the tire casing being an annular member having a core groove around a periphery thereof; the core being an annular member nested within the core groove of the tire casing in an interference fit, a gap being defined between an inner wall of the core groove of the tire casing and the core; wherein an annular outer wall of the core is formed with an annular arc recess defined by a single continuous arc curve spanning between two opposite sides of the core and corresponding to and radially spaced from a curved surface of the core groove of the tire casing such that the gap is defined by the arc curve of the annular arc recess of the core and the curved surface of the core groove of the tire casing; and wherein the two opposite sides of the core groove of the tire casing extend inward to form flanges each of which is spaced from and opposite to a portion of the inner wall of the core groove of the tire casing, and the core that is nested within the core groove of the tire casing such that the two opposite sides respectively are sandwiched between the flanges and the portions of the inner wall of the core groove of the tire casing.

2. The combined tire as claimed in claim 1, wherein each of the two opposite sides of the core has a stepped cross-section, which has a stepped surface engaged with the flanges of the core groove of the tire casing.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) FIG. 1 is a flow chart of the method to manufacture a conventional hollow solid tire;

(2) FIG. 2 is a perspective view of the present invention;

(3) FIG. 3 is a front view of the present invention; and

(4) FIG. 4 is a sectional view taken along line A-A of FIG. 3.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

(5) Embodiments of the present invention will now be described, by way of example only, with reference to the accompanying drawings.

(6) As shown in FIG. 2 to FIG. 4, the present invention discloses a combined tire. The combined tire comprises a tire casing 1 and a core 2. The tire casing 1 is an annular member having a core groove 11 around the periphery thereof Two sides of the core groove 11 of the tire casing 1 extend inward to form flanges 12, respectively. The flanges 12 constitute the tire beads of the tire.

(7) The core 2 is an annular member. The core 2 has a stepped cross-section. When the core 2 is nested within the core groove 11 of the tire casing 1 in an interference fit, a gap 13 is defined between the inner wall of the core groove 11 of the tire casing 1 and the core 2. A stepped surface 21 of the core 2 is engaged with the flanges 12 of the core groove 11 of the tire casing 1 to form a tightening force F to compress the flanges 12 inward. When the tire is mounted on a hub, the tightening force F enables the tire bead of the tire to fit on the hub tightly, so that the tire won't fall off. This can prevent the tire casing 1 from disengaging from the core 2 effectively after the tire casing 1 is compressed to expand outward.

(8) The annular outer wall of the core 2 is formed with an annular arc recess 22. The depth of the arc recess 22 corresponds in size to the gap 13 defined between the inner wall of the core groove 11 of the tire casing 1 and the core 2. When the gap 13 is larger, the hardness of the tire is lower. On the contrary, when the gap 13 is smaller, the hardness of the tire is higher.

(9) The feature of the present invention is that the tire is composed of the tire casing and the core fitted in the tire casing.

(10) The aforesaid is just a preferred embodiment of the present invention. The thickness and pattern of the tire casing can be changed according to the demand

(11) Although particular embodiments of the present invention have been described in detail for purposes of illustration, various modifications and enhancements may be made without departing from the spirit and scope of the present invention. Accordingly, the present invention is not to be limited except as by the appended claims.