Tire-holding device

Patent metadata

Field	Value
Publication number	US-9969140-B2
Application number	US-201615292807-A
Country	US
Kind code	B2
Filing date	Oct 13, 2016
Priority date	Oct 15, 2015
Publication date	May 15, 2018
Grant date	May 15, 2018

Abstract

A tire-holding device includes:
a shaft body having a portion thereof inserted into a bladder which is fixed to the shaft body, the bladder expanding in a tire to hold the tire; and a support body which comes into contact with the shaft body to support the shaft body, the shaft body includes an inner hole placed inside the bladder, and an outer hole placed outside the bladder and is brought into communication with the inner hole, and the support body includes a support hole, and when the support body supports the shaft body, the outer hole and the support hole come into communication with each other irrespective of a position of the shaft body in its circumferential direction.

First claim

What is claimed is:

1. A tire-holding device comprising:
a shaft body having a portion thereof inserted into a bladder which is fixed to the shaft body, the bladder expanding in a tire to hold the tire; and
a support body which comes into contact with the shaft body to support the shaft body, wherein
the shaft body includes an inner hole placed inside the bladder, and an outer hole placed outside the bladder and is brought into communication with the inner hole, and
the support body includes a support hole, and when the support body supports the shaft body, the outer hole and the support hole come into communication with each other irrespective of a position of the shaft body in its circumferential direction.

2. The tire-holding device according to claim 1 , wherein
the support body includes an end surface support portion which supports an end surface of the shaft body,
the outer hole is placed in a position on an axis of the shaft body in the end surface of the shaft body, and
when the support body supports the shaft body, the support hole is placed at a position on the axis of the shaft body in the end surface support portion so that the support hole comes into communication with the outer hole irrespective of a position of the shaft body in the circumferential direction.

3. The tire-holding device according to claim 1 , wherein
the support body includes an end surface support portion which supports an end surface of the shaft body,
the outer hole is placed at a position deviated from an axis of the shaft body in the end surface of the shaft body,
the support hole is placed at a position deviated from the axis of the shaft body in the end surface support portion, and
when the support body supports the shaft body, at least one of the outer hole and the support hole extends around an axis of the shaft body such that the outer hole and the support hole come into communication with each other irrespective of a position of the shaft body in the circumferential direction.

4. The tire-holding device according to claim 1 , wherein
the support body includes a peripheral surface support portion which supports a peripheral surface of the shaft body,
the outer hole is placed in the peripheral surface of the shaft body,
the support hole is placed in the peripheral surface support portion, and
when the support body supports the shaft body, at least one of the outer hole and the support hole extends around the axis of the shaft body such that the outer hole and the support hole come into communication with each other irrespective of a position of the shaft body in its circumferential direction.

5. The tire-holding device according to claim 2 , wherein
the shaft body is provided therein with a valve which opens and closes between the inner hole and the outer hole,
the valve includes a movable valve body, a valve seat placed closer to the outer hole than the valve body, and a projecting portion which projects from the valve body and which can move with respect to the valve seat together with the valve body, and
the projecting portion passes through the valve seat and extends toward the outer hole, and when the valve body comes into contact with the valve seat, the projecting portion projects from the end surface.

6. The tire-holding device according to claim 3 , wherein
the shaft body is provided therein with a valve which opens and closes between the inner hole and the outer hole,
the valve includes a movable valve body, a valve seat placed closer to the outer hole than the valve body, and a projecting portion which projects from the valve body and which can move with respect to the valve seat together with the valve body, and
the projecting portion passes through the valve seat and extends toward the outer hole, and when the valve body comes into contact with the valve seat, the projecting portion projects from the end surface.

7. The tire-holding device according to claim 2 , wherein
the shaft body is provided therein with a valve which opens and closes between the inner hole and the outer hole,
the valve includes a movable valve body, and a valve seat placed closer to the outer hole than the valve body,
the support body includes a projecting portion which projects from the end surface support portion, and
a length of the projecting portion is set in such a manner that when the support body supports the shaft body, the projecting portion passes through the outer hole and the valve seat to press the valve body.

8. The tire-holding device according to claim 5 , wherein
the valve includes an elastic body which biases the valve body toward the valve seat.

9. The tire-holding device according to claim 6 , wherein
the valve includes an elastic body which biases the valve body toward the valve seat.

10. The tire-holding device according to claim 7 , wherein
the valve includes an elastic body which biases the valve body toward the valve seat.

Assignees

• Toyo Tire & Rubber Co

Inventors

• Nonogaki Yuta
• Yamamoto Taizo

Classifications

• B29K2821/00

  Use of unspecified rubbers as mould material · CPC title

• B29D30/0645

  Devices for inserting vulcanising cores, i.e. bladders, into the tyres; Closing the press in combination herewith · CPC title

• B29D30/0605 Primary

  Vulcanising presses characterised by moulds integral with the presses having radially movable sectors · CPC title

• B29D30/0654

  Flexible cores therefor, e.g. bladders, bags, membranes, diaphragms (elastic cores or mandrels for shaping of plastics B29C33/505; bags for isostatic pressing in compression moulding B29C43/12, B29C43/3642) · CPC title

• B29D2030/0675

  Controlling the vulcanization processes · CPC title