Bonded part, manufacturing method of bonded part, ink tank, and ink cartridge

Patent metadata

Field	Value
Publication number	US-10377089-B2
Application number	US-201715673288-A
Country	US
Kind code	B2
Filing date	Aug 9, 2017
Priority date	Aug 12, 2016
Publication date	Aug 13, 2019
Grant date	Aug 13, 2019

Abstract

In order to provide a bonded part capable of reducing deformation caused by injection pressure of bonding resin and preventing an increase in cost, the bonded part includes a first part, a second part, and a third part, wherein the first part includes a wall portion and a hollow portion surrounded by the wall portion, wherein a first shape portion formed of bonding resin is arranged at a position between the second part and the wall portion, wherein a second shape portion formed of the bonding resin is arranged at a position between the wall portion and the third part, and wherein a third shape portion formed of the bonding resin which connects the first shape portion and the second shape portion is arranged on the wall portion.

First claim

What is claimed is:

1. A bonded part comprising:
a first part; and
a second part;
wherein the first part includes a wall portion and a space portion surrounded by the wall portion,
wherein a first shape portion formed of bonding resin is arranged at a position between the second part and the wall portion, and
wherein the first shape portion includes a convex portion that passes through an internal portion of the second part and penetrates to an opposite side of the first part.

2. The bonded part according to claim 1 , wherein the convex portion is provided more than one.

3. The bonded part according to claim 1 , wherein the wall portion is formed into a rectangular shape when the wall portion is viewed from a side on which the first shape portion is arranged.

4. The bonded part according to claim 1 , further comprising:
a third part;
wherein a second shape portion formed of the bonding resin is arranged at a position between the wall portion and the third part, and
wherein a third shape portion formed of the bonding resin which connects the first shape portion and the second shape portion is arranged on the wall portion.

5. The bonded part according to claim 4 , wherein the second shape portion includes a convex portion that passes through an internal portion of the third part and penetrates to an opposite side of the first part.

6. The bonded part according to claim 5 , wherein the convex portion is provided more than one.

7. The bonded part according to claim 4 , wherein the first shape portion and the second shape portion are connected by a plurality of the third shape portions.

8. The bonded part according to claim 4 ,
wherein the first part includes a partition coupled to an inner side of the wall portion so as to divide the hollow portion, and
wherein the third shape portion is arranged at a position on an outer side of the portion where the partition is coupled to the wall portion.

9. The bonded part according to claim 4 , wherein the wall portion is formed into a rectangular shape when the wall portion is viewed from a side on which the first shape portion is arranged.

10. The bonded part according to claim 9 , wherein the third shape portion is arranged on the wall portion at a corner portion of the rectangular shape.

11. The bonded part according to claim 10 , wherein the convex portion is positioned at a distance of one-third or less of an entire distance of the rectangular shape in a breadthwise direction from a side on which the third shape portion is arranged.

12. An ink tank comprising:
a bonded part including:
a first part; and
a second part;
wherein the first part includes a wall portion and a space portion surrounded by the wall portion,
wherein a first shape portion formed of bonding resin is arranged at a position between the second part and the wall portion, and
wherein the first shape portion includes a convex portion that passes through an internal portion of the second part and penetrates to an opposite side of the first part.

13. The ink tank according to claim 12 , further comprising:
a third part;
wherein a second shape portion formed of the bonding resin is arranged at a position between the wall portion and the third part, and
wherein a third shape portion formed of the bonding resin which connects the first shape portion and the second shape portion is arranged on the wall portion.

14. The ink tank according to claim 13 ,
wherein the first part includes a partition coupled to an inner side of the wall portion so as to divide the hollow portion, and
wherein the third shape portion is arranged at a position on an outer side of the portion where the partition is coupled to the wall portion.

15. An ink cartridge comprising:
a bonded part including:
a first part; and
a second part,
wherein the first part includes a wall portion and a space portion surrounded by the wall portion,
wherein a first shape portion formed of bonding resin is arranged at a position between the second part and the wall portion, and
wherein the first shape portion includes a convex portion that passes through an internal portion of the second part and penetrates to an opposite side of the first part.

16. The ink cartridge according to claim 15 , further comprising:
a third part;
wherein a second shape portion formed of the bonding resin is arranged at a position between the wall portion and the third part, and
wherein a third shape portion formed of the bonding resin which connects the first shape portion and the second shape portion is arranged on the wall portion.

17. The ink cartridge according to claim 16 , wherein the first part includes a partition coupled to an inner side of the wall portion so as to divide the hollow portion, and
wherein the third shape portion is arranged at a position on an outer side of the portion where the partition is coupled to the wall portion.

Assignees

• Canon Kk

Inventors

• Wakayama Hiroki
• Watanabe Motohiro
• Tomita Toshiyuki

Classifications

• B29C33/0022

  Multi-cavity moulds (B29C33/301 takes precedence) · CPC title

• B29C66/49

  Internally supporting the, e.g. tubular, article during joining (B29C66/63 takes precedence) · CPC title

• B29C66/71 Primary

  characterised by the composition of the plastics material of the parts to be joined (welding bar compositions B29C65/125) · CPC title

• B29C66/7252

  hollow-walled · CPC title

• B41J2/17553

  Outer structure · CPC title