Machine element or mechanism – Mechanical movements – Reciprocating or oscillating to or from alternating rotary
Reexamination Certificate
1999-11-01
2001-11-20
Herrmann, Allan D. (Department: 3682)
Machine element or mechanism
Mechanical movements
Reciprocating or oscillating to or from alternating rotary
C074S089170, C292S144000, C292SDIG006, C464S160000
Reexamination Certificate
active
06318196
ABSTRACT:
BACKGROUND OF THE INVENTION
a) Technical Field of the Invention
The present invention relates to an improved structure of a pistol-like automobile center lock driving apparatus, wherein the inertia gap formed between gear modules provides the ability of dislocation from the engagement of a transmission gear and an inertia clutching gear to form a gear gap.
b) Description of the Prior Art
As shown in
FIG. 1
, there is shown a conventional pistol-like center lock comprising a driving pull-rod A
1
, various gear modules A
2
and a motor A
3
. The drawbacks of this conventional center lock are as follows:
(1) There is no gap formed between the gear modules, any vibration and inertia force formed as a result of pulling or pushing of the driving pull-rod A
1
are absorbed by the various group of gear modules A
2
. Thus, the various gears form a strong instantaneous stress resistance force so as to overcome the inertia force during the opening or locking of the center lock. Thus, the gears may be damaged or worm, and its life span is affected.
(2) After the plastic gear module A
2
has been damaged, the precision of the gears A
2
is poor. Thus, gap is formed between the gears A
2
and the gear rack A
21
. In the process of instantaneous driving of the gear module, the gears may be “dead locked” or dislocated
3) As a result of the drawback mentioned in (2), dislocation of gears or damages of gears shall occur.
(4) The positioning of the motor of the conventional center lock is poor, and high vibration is occurred in the process of locking and unlocking of the center lock, these will further damage the gears to wear.
SUMMARY OF THE INVENTION
Accordingly, it is an object of the present invention to provide an improved structure of a pistol-like automobile center lock driving apparatus, wherein the driving apparatus can solve the above mentioned drawbacks.
One object of the present invention is to provide an improved structure of an automobile center lock driving apparatus comprising a driving pull-rod, a transmission gear, an inertia clutching gear, a positioning block, an active gear and a motor, characterized in that the driving pull-rod is combined together with a gear rack to form as a unit and has a pulling rod at the front section and a gear rack structure at the rear section, and is retained in a side recess of the positioning block, and is formed into a restrictive railing slot structure with the side wall of a bottom seat, the transmission gear is pivotally mounted to the shaft of the positioning block and is in engagement with the active gear of the motor to transmit power to the inertia clutching gear at the bottom thereof, the bottom section of the transmission gear is provided with an engaging circular body in associated with the inertia clutching gear, the circular body has an arch-shaped engaging portion and has an external larger diameter section; the inertia clutching gear is pivotally mounted at the shaft of the positioning block and is located below the transmission gear and forms into a securing section and a gear section, the securing section is in associated with the circular body at the bottom of the transmission gear, and the gear section is in engagement with the gear rack of the driving pull-rod, and the positioning block is a disc-like structure and includes a pivotal shaft, the side recess, and a motor-positioning covering, wherein the covering enables the active gear to engage with the external transmission gear, and covers the motor, isolates and positions the motor within the motor recess at the center lock base seat.
The foregoing objects and summary provide only a brief introduction to the present invention. To fully appreciate these and other objects of the present invention as well as the invention itself, all of which will become apparent to those skilled in the art, the following detailed description of the invention and the claims should be read in conjunction with the accompanying drawings. Throughout the specification and drawings identical reference numerals refer to identical or similar parts. Many other advantages and features of the present invention will become manifest to those versed in the art upon making reference to the detailed description and the accompanying sheets of drawings in which a preferred structural embodiment incorporating the principles of the present invention is shown by way of illustrative example.
REFERENCES:
patent: 4759192 (1988-07-01), Bertram et al.
patent: 4819493 (1989-04-01), Dornan
patent: 4864322 (1989-09-01), Yamamoto et al.
patent: 4889002 (1989-12-01), Abraham
patent: 5173716 (1992-12-01), Tetsuka
patent: 5215447 (1993-06-01), Wen
patent: 6119538 (2000-09-01), Chang
A & J
Herrmann Allan D.
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