Brakes – Wheel – Axially movable brake element or housing therefor
Reexamination Certificate
2000-12-29
2002-08-27
Butler, Douglas C. (Department: 3683)
Brakes
Wheel
Axially movable brake element or housing therefor
C188S072100
Reexamination Certificate
active
06439352
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
This invention is related to a thrust structure of brake mechanism.
2. Description of the Prior Art
There are a wide variety of brakes, including conventional swing-arm type brake pad, lining pad, etc. In recent years, disc brakes, electromagnetic brakes and other types of new brakes have been introduced to upgrade braking efficiency and enhance safety. Taking into consideration the different brake performances, scope of applications and costs, the disc brakes are widely applied to various vehicles. Therefore, their braking efficiency has become more and more important. The brake efficiency involves several aspects. One particularly important factor is the brake thrust, as shown in
FIGS. 1 and 2
, a conventional brake mechanism involves mainly a turning block
11
installed inside an outer casing
10
, the turning block
11
is driven by a swing member
12
, on the other side of the turning block
11
is a push block
13
for parallel movement only, the push block
13
can push a moving member
15
with a brake block
18
, between the moving member
15
and the outer cover
17
of the outer casing
10
is a spring that serves to automatically reset the push block
13
to original position.
On opposite sides of the turning block
11
and the push block
13
are the formations of several elongated arched grooves
110
and semi-circular grooves
130
, to accommodate a roller
14
. The elongated arched groove
110
is shaped as a water drop tapering to the direction of brake rotation. When the user pulls the brake handle, as shown in
FIGS. 2 and 3
, the swing member
12
drives the turning block
11
, the roller
14
moves to the area with a small diameter, pushing out the push block
13
in parallel direction, which in turn push the brake block
18
on the moving member
15
to perform braking operation. When the user releases the brake handle, the turning block
11
will be driven by the swing member
12
and reset to its original position, while the compressed spring
16
will synchronously reset the push block
13
and accomplish a braking operation.
The force pushing the brake pad
18
of the above conventional brake mechanism comes mainly from the turning block
11
, the elongated arch groove
110
and semi-circular groove
130
of the push block, and the roller
14
. But the starting point of the semi-circular groove
130
and the elongated arch groove
110
is located to envelop the entire roller
14
(shown in FIG.
2
), which results in increased friction coefficient between the roller
14
and the turning block
11
and the push block
13
. Therefore, it requires a larger force to push the roller
14
. Meanwhile, since the diameter of the roller
14
is small, the maximum length of the entire thrust line is no more than the diameter of the roller
14
. Such a design of smaller brake thrust will result in reduced braking efficiency.
Therefore, it is an object of the present invention to provide a thrust structure of brake mechanism which can obviate and mitigate the above-mentioned drawbacks.
SUMMARY OF THE INVENTION
This invention is related to a thrust structure of brake mechanism.
It is the primary object of the present invention to provide a thrust structure of brake mechanism with enhanced thrust and laborsaving operation, involving mainly an outer casing in which is a turning block that is driven by a swing member, the turning block can drive a push block to move, the push block pressing against a moving member with a brake block, characterized in that, on opposite sides of the turning block and the push block is the formation of several matching cone-shaped elongated grooves, between the cone-shaped elongated grooves is a cone-shaped roller post, and on the bottom of the cone-shaped elongated groove is an incline that ascends gradually toward the direction of brake rotation, so designed that when the turning block is turning, the roller post rolling on the incline of the cone-shaped elongated groove will push the push block to move and perform braking operation, to enhance the brake thrust, reduce friction coefficient and upgrade braking efficiency.
The foregoing object 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: 4029179 (1977-06-01), Butz
patent: 4295548 (1981-10-01), Quiney
patent: 5788022 (1998-08-01), Antony
patent: 5788024 (1998-08-01), Meyer
patent: 6250438 (2001-06-01), Chern
patent: 6264011 (2001-07-01), Zernickel
Butler Douglas C.
Lei Leong C.
LandOfFree
Thrust structure of brake mechanism does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Thrust structure of brake mechanism, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Thrust structure of brake mechanism will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2882174