Swing arm device for fishing reel

Details Swing arm device for fishing reel Swing arm device for fishing reel

2001-05-08

2002-05-07

Marcelo, Emmanuel M. (Department: 3653)

Winding, tensioning, or guiding

Reeling device

Fishing rod reel

C242S284000, C074S547000

Reexamination Certificate

active

06382543

ABSTRACT:

BACKGROUND OF THE INVENTION
1. Field of the Invention
This invention relates to a fishing reel, more particularly to a swing arm device for a fishing reel, which can be operated smoothly.
2. Description of the Related Art
Referring to
FIGS. 1 and 2
, a conventional fishing reel is shown to include a reel body
11
, a main shaft
12
, a spool
13
, a swing arm device
20
, and a driving tube
30
. The driving tube
30
is provided with a fixed bevel gear
31
that engages a threaded end portion
121
of the main shaft
12
so as to transfer the rotation of the driving tube
30
to the main shaft
12
and subsequently to the spool
13
. The swing arm device
20
includes a swing arm
21
, a sleeve
22
, a driving shaft
23
, and a bolt
24
. The sleeve
22
is sleeved fixedly on the driving shaft
23
. The driving shaft
23
has a hexagonal cross-section, and is engaged within a hexagonal cross-sectioned hole in the driving tube
30
, thereby permitting synchronous rotation of the driving shaft
23
and the driving tube
30
. The bolt
24
retains the driving shaft
23
on the body
11
. As such, the rotation of the swing arm
21
can be transferred to the spool
13
. However, because clearance is inevitably present between the driving shaft
23
and the driving tube
30
, when the swing arm
21
is actuated, the driving shaft
23
moves radially within the driving tube
30
, thereby resulting in unsmooth operation of the swing arm
20
.
SUMMARY OF THE INVENTION
An object of this invention is to provide a fishing reel with an improved swing arm device, which can be operated smoothly.
According to this invention, a fishing reel includes a reel body, a main shaft, a spool, a driving tube, and a swing arm device. The swing arm device includes a swing arm, a driving shaft journalled in the body, and a sleeve unit journalled on the body and disposed around the driving shaft. Each of the driving shaft and the sleeve unit has an end that is coupled to and that is rotatable with the swing arm. The driving shaft has a polygonal cross-section, and extends into a polygonal-cross-sectioned hole in the driving tube. The driving tube has an end surface, which is formed with several tongues that engage respectively and fittingly several grooves in the sleeve unit, thereby transferring smoothly the rotation of the driving shaft to the driving tube.


REFERENCES:
patent: 3967791 (1976-07-01), Morishita
patent: 4196867 (1980-04-01), Miller
patent: 4332358 (1982-06-01), Neufeld
patent: 4369930 (1983-01-01), Noda
patent: 5540397 (1996-07-01), Yoshikawa
patent: 5690289 (1997-11-01), Takeuchi et al.
patent: 6102315 (2000-08-01), Sato

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