Sealing/pump-up device

Abstract

To prevent a burr, produced from the joint portion by welding between a liquid agent container and an injection unit, from interfering with a boring member inserted into a jig communication passage when the boring member is inserted into the jig communication passage to prevent the obstruction of the piercing action through a sealing member by the edge of the boring member. In the sealing pump-up device 10, a tubular inner annular member 104 is integrally formed on the inner peripheral side of a joined portion 37 in an injection unit 20 so as to surround, from an outer peripheral side, a boring member 62 held in a jig insertion hole 44, and a burr housing unit 106 consisting of an almost cylindrical space is formed between the outer annular member 28 of a liquid container 18 and the tubular inner annular member 104, whereby it is possible to guide the tip end side of a burr 110, extending from the joint portion between the outer annular member 28 and a joined portion 37 toward the inner peripheral side, from moving toward the boring member 62 side of the burr 110 by means of the tubular inner annular member 104.

Description

technical field [0001] The present invention relates to a method of injecting a sealant for sealing a punctured pneumatic tire into a pneumatic tire, and supplying compressed air into the pneumatic tire to increase the internal pressure of the pneumatic tire. pump-up) device. Background technique [0002] In recent years, a kind of sealing and pumping device has been popularized. When the pneumatic tire (hereinafter referred to as "tyre") is punctured, it does not need to replace the tire and the wheel, but uses a sealant to repair the tire and pump the tire to make it The internal pressure is raised to the specified specified pressure. As such a sealing pumping device, for example, the device described in JP-A-2005-199618 is known. [0003] The sealing and inflating device described in Japanese Patent Application Laid-Open No. 2005-199618 includes a liquid agent container and a unit main body (injection unit). A punctureable lid (sealing member) made of aluminum foil or ...

AI Technical Summary

Problems solved by technology

[0007] However, in the case where the neck of the liquid agent container is joined to the connection portion of the injection unit by welding as described above, it is difficult to control the The extension direction of the welding burr, when the welding burr extends from the joint part to the inner peripheral side, the front end side of the welding burr may cover the sealing member from the lower side

In addition, if the welding is reduced, the amount of welding burrs can be reduced, but the strength of the connection cannot be ensured, and it is difficult to manage mass production

In addition, if a large amount of welding burr is generated and the front end of the welding burr covers the sealing member, when the piercing member is pushed toward the rupture position, the cutting edge of the piercing member will hit the resin welding burr, which may prevent the seal from sealing. The piercing member moves toward the rupture position, or the blade cannot normally pierce the sealing member even when it reaches the rupture position

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