Vibration controlling construction of a quick-release member...

Elongated-member-driving apparatus – With means to move or guide member into driving position – Including supply magazine for constantly urged members

Reexamination Certificate

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Details

C227S127000

Reexamination Certificate

active

06325268

ABSTRACT:

BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a vibration controlling construction of a quick-release member for a fastening element driving tool, and more particularly to an improved vibration controlling construction of a quick-release member applicable to the field of the fastening element driving tools.
2. Description of the Related Prior Art
A conventional quick release device for a fastening element driving tool as shown in
FIG. 5
is disclosed including a locking ring
55
of a trigger
54
. The locking ring
55
is so configured to lock the hook
52
. However, the horizontal component force exerted to the locking ring
55
when it is locked is more than the vertical component force exerted to it. In such a configuration, when the conventional fastening element driving tool is actuated, the recoil force will cause the central plate
51
together with the hook
52
to slightly vibrate in horizontal direction as shown by two arrows in FIG.
5
. However, there is no normal force between the quick-release member
53
and the central plate
51
to allow them to come to abut to each other closely Therefore, when central plate
51
and hook
52
vibrate the locking ring
55
will be pulled and then released immediately after time. After a certain period of time, the locking ring
55
will be easily broken due to fatigue by vibration. In such a situation, a trouble in maintenance or substitution of the quick-release member
53
is often caused.
SUMMARY OF THE INVENTION
However, it is found a disadvantage in the subject matter of the above-mentioned prior art that the locking ring will be easily broken due to fatigue by the vibration.
Thus, there is still a need for improving the subject matter of prior art.
Therefore, an object of the present invention is to provide a vibration controlling construction of a quick-release member for a fastening element driving tool. The vibration controlling construction can exactly and constantly provide a normal force from a controlling member so as to reduce the chance of the fatigue of the quick-release member to extend the life of the quick-release member.
To accomplish the object of the present invention, the construction includes a central plate mounted on a top surface of a magazine of the tool. A detachable quick-release member is mounted on the top surface of the central plate. A trigger is pivotally mounted on the quick-release member and has a locking ring. At least one hook integrally protrudes from the central plate and extends over the quick-release member to form a protrusion. The hook has a slot formed on a face thereof and a slope extending from a top edge of the slot. The slot of the hook has a controlling member received therein. The controlling member includes a bottom surface abutting upon the face of the quick-release member. a slant formed on a first position corresponding to the slope of the hook to abut upon the slope of the hook, and a second position located to form a lock relationship with the locking ring.
The other object of the present invention is to provide a simple structured, suppressing-orientation-exact, and quickly detachable controlling member for a quick release member of a fastening element driving tool
To accomplish this object of the present invention, the second position of the controlling member has a locking slot and the locking ring is so configured that it can be locked by the locking slot.


REFERENCES:
patent: 4436236 (1984-03-01), Jobe
patent: 4688710 (1987-08-01), Massari, Jr. et al.
patent: 5642849 (1997-07-01), Chen
patent: 6056182 (2000-05-01), Chen
patent: 6076722 (2000-06-01), Huang

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