Title:
作業機械の二部材連結構造
Document Type and Number:
Japanese Patent JP5096861
Kind Code:
B2
Abstract:
[PROBLEM] To provide a two-member connection structure for a working machine, which can hold outboard members and their corresponding inboard members for relative pivotal movement without arrangement of stoppers for restricting rotation of flange portions and a connector pin. [SOLUTION] A two-member connection structure is provided with an boom 4 to be arranged on a hydraulic excavator, an arm 5 arranged inboard the boom 4, outboard bushings 6 and inboard bushings 7 press-fitted in pin holes 4a, 5a of the boom 4 and arm 5, respectively, a connector pin 8 inserted in holes 6a of the outboard bushings 6 and holes 7a of the inboard bushings 7 to connect the boom 4 and arm 5 as two members for relative pivotal movement, and flange portions 9 integrally arranged on opposite end portions of the connector pin 8, respectively, to restrict slip-out of the connector pin 8. The connector pin 8 is arranged rotatably relative to both of the outboardbushings 6 and the inboardbushings 7, and the flange portions 9 are arranged slidably relative to outboard end faces 6b of the corresponding outboard bushings 6 without being prevented from rotation relative to the boom 4.
Inventors:
Osamu Gokita
Application Number:
JP2007261959A
Publication Date:
December 12, 2012
Filing Date:
October 05, 2007
Export Citation:
Assignee:
Hitachi Construction Machinery Co., Ltd.
International Classes:
E02F3/38; E02F3/40
Domestic Patent References:
| JP9177125A | ||||
| JP2005030500A | ||||
| JP11021940A | ||||
| JP2004162292A | ||||
| JP7331689A | ||||
| JP2003221838A |
Foreign References:
| US3600015 | ||||
| US6283667 | ||||
| US5630673 |
Attorney, Agent or Firm:
Patent Business Corporation Takewa International Patent Office