Joints and connections – Including ancillary means blocking disconnection of joint – Cam or thread lock
Reexamination Certificate
1998-01-23
2001-03-27
Dayoan, B. (Department: 3629)
Joints and connections
Including ancillary means blocking disconnection of joint
Cam or thread lock
C411S349000, C248S071000, C248S074300
Reexamination Certificate
active
06206606
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to improvements in a fixing device for fixing a rod body such as a pipe or a tube to an objective member such as a panel.
2. Related Background Art
An example of the fixing device of this type is the one as shown in Japanese Laid-open Utility Model Applications No. 57-190904 and No. 60-16078.
The conventional fixing device has a main body formed in an annular shape capable of holding a rod body inside and separated at the both ends, and flanges extending from the both ends of the main body and having a through hole. In practical use, the rod body is retained inside the main body and, while keeping the two flanges superimposed, the tip of a bolt is inserted through the through holes of each flange into a through hole of a panel being an objective member. Then a nut is coupled with the tip of the bolt on the back surface side of the panel, whereby the rod body can be fixed to the panel.
Accordingly, the conventional fixing device had an advantage that the rod body was able to be firmly fixed to the panel because of the use of bolt and nut, whereas it also had big problems that the number of parts was naturally increased and, particularly, that the fixing work of the rod body to the panel required great effort.
SUMMARY OF THE INVENTION
An object of the present invention is to provide a fixing device that can firmly fix a rod body to a panel, that involves a small number of parts, and that facilitates the fixing work of the rod body to the panel.
A fixing device for rod body according to the present invention is a fixing device for fixing a rod body to an objective member, comprising a base body with a through hole formed in the center thereof, a grommet body arranged to be inserted into the through hole of the base body, and a pin body arranged to be pushed into an inner hole of the grommet body to expand the grommet body, said grommet body being interlinked with one side edge of the base body through a holder portion for holding the rod body, said pin body being interlinked with another side edge of the base body through a hinge portion, and temporary fixing means being provided between said grommet body and said through hole of the base body, wherein when the grommet body is inserted into the through hole of the base body with the rod body being held by the holder portion, the grommet body is temporarily fixed to the base body by said temporary fixing means and wherein when said grommet body is inserted into a mounting hole of the objective member and said pin body is pushed into the inner hole of the grommet body, the base body is regularly fixed to the objective member by expansion of the grommet body.
In an embodiment of the fixing device for rod body according to the present invention, said pin body has a shank for expanding the grommet body when being pushed in a first posture into the inner hole of the grommet body and for releasing expansion of the grommet body when being changed from the first posture into a second posture in the inner hole of the grommet body and wherein said hinge portion, in a free state thereof, supports the pin body in said first posture.
In an embodiment of the fixing device for rod body according to the present invention, a lock wall is provided on an outer surface of the flange portion of the grommet body and a swelling wall is provided on a side face of a head of the pin body, and wherein when the pin body is pushed in the first posture into the inner hole of the grommet body, said swelling wall comes to engage the lock wall, thereby defining a direction of change of the pin body from the first posture to the second posture in the inner hole of the grommet body.
In an embodiment of the fixing device for rod body according to the present invention, said holder portion and hinge portion extend in directions away from each other from the base body and thereafter curve in a direction opposite to a surface of the base body intended to contact the objective member, whereby the grommet body and the pin body are supported opposite to each other at respective curving tip portions of said portions.
In an embodiment of the fixing device for rod body according to the present invention, the tip of the grommet body is closer to the through hole of the base body than the tip of the pin body.
In an embodiment of the fixing device for rod body according to the present invention, said hinge portion is more elongate than the holder portion.
In an embodiment of the fixing device for rod body according to the present invention, the pin body, the hinge portion, the base body, the holder portion, and the grommet body are positioned on a straight line, the through hole of the base body is open on one edge side of the base body perpendicular to a direction of said straight line, and a projecting portion arranged to contact side faces of the grommet body is provided at edges of the through hole except for the opening side.
In an embodiment of the fixing device for rod body according to the present invention, the base body surrounds the entire periphery of the through hole.
As described above, the present invention permits the rod body to surely be fixed to the objective member in such a manner that the grommet body is temporarily fixed to the base body to achieve the temporary holding state of the rod body to the holder portion, thereafter the grommet body is inserted into the mounting hole of the objective member, and the pin body is inserted into the inner hole of the grommet body, thereby regularly fixing the fixing device to the objective member, and thus the workability is drastically improved as against the conventional fixing devices.
In addition, in an embodiment according to the present invention, the grommet body can be expanded by simply pushing the pin body in its first posture into the inner hole of the grommet body by blind work, and the workability is thus improved furthermore.
In an embodiment according to the present invention, the pin body can be regulated to change in the direction from the first posture to the second posture, whereby the expansion of the grommet body can be prevented from erroneously and readily being released.
In an embodiment according to the present invention, the rod body will be prevented from readily slipping off from the fixing device, even if the expanding state of the grommet body is released.
In an embodiment according to the present invention, the orderly work is very easy.
In an embodiment according to the present invention, the changing work of the pin body from the first posture to the second posture is easy.
In an embodiment according to the present invention, the fixing device itself can be molded by the simple, upper and lower split mold structure, and slipping-off of the pin body from the grommet body can be prevented by the contact action of the projecting portion with the grommet body, even if unexpected external force is exerted on the holder portion.
In an embodiment according to the present invention, the rigidity of the through hole of the base body is enhanced, thereby assuring the sure, temporary fixing state of the grommet body.
REFERENCES:
patent: 2896889 (1959-07-01), Hershberger et al.
patent: 2937834 (1960-05-01), Orenick et al.
patent: 2995328 (1961-08-01), Whitted
patent: 3144695 (1964-08-01), Budwig
patent: 3272061 (1966-09-01), Seckerson
patent: 3465992 (1969-09-01), Schuplin
patent: 3758060 (1973-09-01), Schuplin
patent: 5211519 (1993-05-01), Saito
patent: 5669108 (1997-09-01), Ferrari et al.
patent: 5718549 (1998-02-01), Noda et al.
patent: 60-16078 (1982-12-01), None
patent: 57-190904 (1985-02-01), None
Arisaka Ohmi
Mita Kazuhiro
Bochna David E.
Dayoan B.
Ladas & Parry
Piolax Inc.
LandOfFree
Fixing device for rod body does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Fixing device for rod body, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Fixing device for rod body will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2539750