Sealing and pump-up device

• US 8,453,683 B2
• Filed: 06/09/2008
• Issued: 06/04/2013
• Est. Priority Date: 06/18/2007
• Status: Active Grant

• Current Assignee: Kakuichikasei Co., Ltd.
• Original Assignee: Bridgestone Corporation
• Inventors: Yoshida, Masaki, Takeda, Yuji, Izumoto, Ryuji, Inoue, Yusuke, Kojima, Takahiko
• Primary Examiner(s): MAUST, TIMOTHY LEWIS
• Application Number:
  US12/665,226
• Publication Number:
  US 20100186849A1
• Time in Patent Office: 1,821 Days
• Field of Search: 141/38, 141/67, 141/105, 141/114, 141/231, 141/330, 152/415
• US Class Current: 141/38
• CPC Class Codes: B29C 73/166 Devices or methods for introducing sealing compositions into articles
• CPC Class Codes: B29L 2030/00 Pneumatic or solid tyres or parts thereof conveyor belts B29L2031/7092; drive belts B29L2031/7094; fourdrinier belts B29L2031/733

Abstract

A sealing and pump-up device (10) includes: a liquid agent container (18) containing a sealing agent (32); an injection unit (20) that is connected to an outlet (29) of the liquid agent container (18) and has a liquid pressurization and supply chamber (40) and a jig insertion hole (44); a jig (82) that by insertion into the jig insertion hole (44) pierces an aluminum seal (30) by means of a piercing member (62) and closes off the jig insertion hole (44); and a leading end portion (85), of an insertion portion (84), having a step (85A) that catches on an edge (44B) of a jig insertion hole (44) before the jig (82) that has been inserted into the jig insertion hole (44) reaches a piercing position, when the aluminum seal (30) is pierced.

Claims

1. A sealing and pump-up device comprising:

a liquid agent container for containing a sealing agent and having an outlet for the sealing agent closed by a seal member;

an injection unit connected to the outlet and having a liquid supply chamber that is in communication with the inside of the liquid agent container by piercing a hole in the seal member, and a jig insertion hole that communicates the liquid supply chamber with the outside of the injection unit;

compressed air supply means that generates compressed air for applying pressure to the sealing agent and for filling a pneumatic tire;

an air and liquid supply tube that supplies sealing agent that has flowed out from the liquid supply chamber and compressed air to the pneumatic tire;

a jig that is insertable into the jig insertion hole, and by insertion into the jig insertion hole, directly or indirectly via another member, pierces a hole in the seal member and also closes off the jig insertion hole; and

first prevention means that, when the jig is in a position inserted into the jig insertion hole and before a hole piercing position of the jig when the seal member is pierced, functions to prevent movement of the jig in a removal direction,

the first prevention means including a first engaged portion formed to the injection unit, and a first catching portion which is provided at the jig so as to catch on the first engaged portion to prevent movement in the removal direction of the jig that has been inserted in the jig insertion hole.

2. The sealing and pump-up device of claim 1, wherein:

the first engaged portion is an edge portion at the liquid supply chamber side of the jig insertion hole; and

the first catching portion which is provided at an insertion portion of the jig for insertion into the jig insertion hole, and is capable of catching on the edge portion on the liquid supply chamber side of the jig insertion hole after insertion through the jig insertion hole.

3. The sealing and pump-up device of claim 1, wherein:

by insertion of an insertion portion into the jig insertion hole, a leading end side of the insertion portion passes through the hole-pierced seal member and intrudes into the liquid agent container and the insertion portion has an internal communication path that guides the compressed air that has been generated into the liquid agent container in a state in which the leading end side intrudes into the liquid agent container; and

the insertion portion is equipped with second prevention means that prevents movement of the jig in the removal direction when in a state in which the leading end side of the insertion portion is intruding into the liquid agent container.

4. The sealing and pump-up device of claim 3, wherein:

the jig is configured including an extending portion provided to a base portion of the insertion portion and extending in directions orthogonal to the axial direction of the insertion portion on both sides of the insertion portion with the insertion portion therebetween, and including first support columns formed at the two sides of the extending portion and provided at the side of the jig that is provided with the insertion portion; and

the second prevention means is configured including a projection portion projecting out from the injection unit, and including a second claw formed at the leading end side of the first support column and extending toward the insertion portion side so as to catch on an edge portion of the projection portion such that the insertion portion, which has been inserted into the jig insertion hole, is prevented from moving in the removal direction.

5. The sealing and pump-up device of claim 2, wherein:

by insertion of the insertion portion into the jig insertion hole, a leading end side of the insertion portion passes through the hole-pierced seal member and intrudes into the liquid agent container and the insertion portion has an internal communication path that guides the compressed air that has been generated into the liquid agent container in a state in which the leading end side intrudes into the liquid agent container; and

the insertion portion is equipped with second prevention means that prevents movement of the jig in the removal direction when in a state in which the leading end side of the insertion portion is intruding into the liquid agent container.

6. The sealing and pump-up device of claim 5, wherein:

the jig is configured including an extending portion provided to a base portion of the insertion portion and extending in directions orthogonal to the axial direction of the insertion portion on both sides of the insertion portion with the insertion portion therebetween, and including first support columns formed at the two sides of the extending portion and provided at the side of the jig that is provided with the insertion portion; and

the second prevention means is configured including a projection portion projecting out from the injection unit, and including a second claw formed at the leading end side of the first support column and extending toward the insertion portion side so as to catch on an edge portion of the projection portion such that movement of the insertion portion that has been inserted into the jig insertion hole is prevent in the removal direction.

7. The sealing and pump-up device of claim 1, wherein:

the jig is configured including an insertion portion for insertion into the jig insertion hole, and an extending portion provided to a base portion of the insertion portion and extending in directions orthogonal to the axial direction of the insertion portion and on both sides of the insertion portion with the insertion portion therebetween, and including first support columns formed at the two sides of the extending portion and provided at the side of the jig that is provided with the insertion portion; and

the first engaged portion is an edge portion of a projection portion projecting out from the injection unit, and the first catching portion is provided to the leading end side of the first support columns and extending toward the insertion portion side so as to catch on the edge portion of the projection portion.

8. The sealing and pump-up device of claim 7, wherein:

by insertion of the insertion portion into the jig insertion hole, a leading end side of the insertion portion passes through the hole-pierced seal member and intrudes into the liquid agent container and the insertion portion has an internal communication path that guides the compressed air that has been generated into the liquid agent container in a state in which the leading end side intrudes into the liquid agent container; and

the insertion portion is equipped with second prevention means that prevents movement of the jig in the removal direction when in a state in which the leading end side of the insertion portion is intruding into the liquid agent container.

9. The sealing and pump-up device of claim 8, wherein:

the jig has second support columns provided on both sides of the extending portion, further to the insertion portion side than the first support columns; and

the second prevention means includes holes formed to the injection unit and second claws formed to the leading end side of the second support columns, the second claws extending in directions toward the opposite sides to those of the insertion portion side so as to catch on an edge portion of the hole, or on an inner peripheral face of the hole, so as to prevent the insertion portion that has been inserted into the jig insertion hole from moving in the removal direction.