Tools – Wrench – screwdriver – or driver therefor – Machine
Reexamination Certificate
2001-01-16
2002-07-02
Meislin, D. S. (Department: 3723)
Tools
Wrench, screwdriver, or driver therefor
Machine
C081S435000
Reexamination Certificate
active
06412370
ABSTRACT:
BACKGROUND OF THE INVENTION
(a) Technical Field of the Invention
The present invention relates to an improved structure of a screw-mounting device, and in particular, to a device with simple structures which do not wear out or damage easily. The device of the present invention is easily assembled and can be easily and conveniently maintained.
(b) Description of the Prior Art
FIG. 1
shows a conventional screw-mounting device comprising a machine body A, a machine tubing B, and a controlling/pushing screw block module C, wherein the interior of the top section of the machine body A is provided with a spring A
1
, and the two lateral sides of the machine body A are provided respectively with a corresponding passage A
2
. The lower section of one lateral side of the passage A
2
is provided with a sloping slot A
3
, and the sloping slot A
3
allows the sliding of a triggering rod C
2
of the controlling/pushing screw block C. One end of the spring A
1
is connected to a mounting seat B
1
at the rear end of the machine tubing B. The machine tubing B is protruded from the front end of the machine body A and the rear end is connected to the mounting seat B
1
moveable along the path A
2
such that the machine tubing B is retractable within the interior of the machine body A. The bottom section of the machine tubing B is provided with a screw block slot B
2
, allowing the insertion of a screw block C. One lateral side of the screw slot B
2
is provided with a screw-pushing block B
21
. By means of the triggering rod C
2
of the controlling pushing screw block module C, the screw block module C, the screw-pushing block B
21
is triggered to cause screws of the screw block to be pushed to the center of the machine tubing B so as to wait for next mounting procedure. The controlling/pushing screw block module C comprises a connection seat C
1
, a triggering rod C
2
, and a sliding rod C
3
.
The connection seat C
1
is connected to the lower section of the mounting seat B
1
of the machine tubing B, and the top of the mounting seat B
1
is provided with a spring ring C
11
. The spring ring C
11
is connected to the triggering rod C
2
which is
a shaped, and the front end head is bent and is located within the screw-pushing block B
21
of the screw block slot B
2
to allow triggering. In addition, the other end (rear end) of the triggering rod C
2
is horizontally connected to the sliding rod C
3
. The sliding rod C
3
is extended to urge at the sloping slot A
3
of the machine body A. Thus, when the machine tubing B moves backwards by a pulling force (as shown in FIG.
2
), the mounting seat B
1
is moveable along the passage A
2
, and at the same time, the connection seat C
1
of the controlling/pushing screw block module C is driven to move backwards. When the connection seat C
1
moves backwards, due to the shape of the sloping slot A
3
, the sliding rod C
3
gradually slides to the sloping slot A
3
and the front end of connected triggering rod C
2
moves downwards such that the front end head of the triggering rod C
2
drives the screw-pushing block B
21
to move downwards. At this instance, the pushing plate B
22
of the screw-pushing block B
21
is driven to move downwards to urge at the bottom section of the screws of the screw block Additionally, when the mounting seat B
1
moves forwards so as to be positioned, the triggering rod C
2
moves in accordance with the sliding rod C
3
and the front end head of the triggering rod C
2
urges the screw-pushing block B
21
to move upwards, and the pushing plate B
22
causes the screw to move upwards. In the conventional screw-mounting device, the sliding rod C
3
moves along the sloping slot A
3
so as to drive the end head of the triggering rod C
2
to drive the screw-pushing block B
21
to move downwards, and the pushing plate B
22
of the screw-pushing block B
21
urges the bottom section of the screw of the screw block.
When the triggering rod C
2
moves forwards with the sliding rod C
3
, the screw is moved upwards and the objective of screw pushing is attained. However, as the sliding rod C
3
and the triggering rod C
2
are connected, and the sliding rod C
3
is urged at the sloping slot A
3
, after a period of use, the sliding rod C
3
will erode the sloping slot A
3
to form a recess which affects the smoothness of sliding movement. This will also affect the pushing of the screws. In addition, the sliding rod C
3
is driven by the connection seat C
1
, and the connection seat C
1
is connected to the lower section of the mounting seat B
1
, and the triggering rod C
2
is bent, the end head is required to be extended at the screw-pushing block B
21
of the screw block slot B
2
. Thus, with respect to the component, the conventional structure is too complicated and the assembly thereof is laborious and time consuming.
SUMMARY OF BE INVENTION
Accordingly, it is an object of the present invention to provide an improved structure of a screw-mounting device comprising a machine body, a machine tubing, a controlling module and a retractable adjusting device located at one lateral side of the machine body, the end face of the front end of the machine body being a sloping side to allow a sliding wheel of the controlling module to urge against the sliding movement, the controlling module comprising a guiding rod, the sliding wheel and a cavity body, and the controlling module located at the side of a screw insertion slot module, characterized in that the lateral side of the sliding rod is extended to provide a
shaped holding block, and the holding block is appropriately mounted at a recess located at the bottom section of the screw-pushing plate, the sliding wheel is pivotally mounted at the top section of the guiding rod, and the bottom section of the guiding rod is provided with a spring within the cavity body, thereby when the sliding wheel urgingly slides together with the sloping side, the guiding block is simultaneously moves upwards or downwards according to the sloping side, so that the holding block drives the sliding block to move upwards or downwards with the sliding slot, and therefore the screw-pushing plate can urge against the bottom section of the screw, and the screw is elevated until the screw rod is inserted for mounting.
Other object and advantages of the present invention will become more apparent from the following description taken in conjunction with the accompanying drawing.
REFERENCES:
patent: 5855151 (1999-01-01), Habermehl
Chu Yue Kin
Hsu Ming-Chieh
Chu Yue Kin
Hsu Ming-Chieh
Meislin D. S.
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