Title: Fiber-optic transmitting and receiving device
Abstract: A fiber-optic transmitting and receiving device is used on the mainstream fiber-optic system. A cover of which is used to cover the metal board and the metal tips of the fiber-optic transmitting and receiving device, the cover is formed with inserting grooves and inserting holes respectively corresponding to the metal board and the metal tips. The cover can protect the metal tips from damage and prevent short circuit. Furthermore, the independent feet are provided with check retainer which serves to engage in the sockets and the retaining holes on the transmitting and receiving head. Through this way, the independent feet can be firmly fixed, so as to prevent failures in assembly.
Patent Number: 6,988,835 Issued on 01/24/2006 to Yang
| Inventors:
|
Yang; Johnson (No. 93-1, Ciaohe Rd., Jhonghe City, Taipei County, TW)
|
| Appl. No.:
|
849735 |
| Filed:
|
May 19, 2004 |
| Current U.S. Class: |
385/92 |
| Current Intern'l Class: |
G02B 6/42 (20060101) |
| Field of Search: |
385/88- 94
|
References Cited [Referenced By]
U.S. Patent Documents
Primary Examiner: Song; Sarah U
Attorney, Agent or Firm: Baxley; Charles E.
Claims
What is claimed is:
1. A fiber-optic transmitting and receiving device comprising a transmitting
and receiving head and a metal board, the transmitting and receiving head being
formed with a plurality of optic-transmitting legs, plural independent feet and
a groove for insertion of the metal board, and the metal board being formed with
at least a metal tip; wherein:
the transmitting and receiving head is formed with a Π-shaped socket that
is located correspondingly to the groove, the transmitting and receiving head is
further formed with a recess, on both sides of the Π-shaped socket and in
the recess is formed at least a projection;
a cover made of non-conductive plastic is provided on its outer periphery with
a plurality of bent arms to be engaged in the Π-shaped socket and the recess
of the transmitting and receiving head, the respective bent arms are formed with
a locking aperture for engaging the projection of the transmitting and receiving
head, the cover fully covers the metal board of the transmitting and receiving
head and is formed with a plurality of inserting holes for insertion of the optic-transmitting
legs and the metal tip of the transmitting and receiving head.
2. The fiber-optic transmitting and receiving device as claimed in claim 1, wherein
an inserting groove for insertion of the metal board of the transmitting and receiving
head is formed on an inner wall of the cover.
3. The fiber-optic transmitting and receiving device as claimed in claim 1, wherein
the cover is formed on the periphery thereof with inclined locking surface which
enables the cover to be easily covered on the transmitting and receiving head.
4. The fiber-optic transmitting and receiving device as claimed in claim 1, wherein
the inserting holes is formed on its inner periphery with inclined locking surface
which enables the optic-transmitting legs and the metal tip to be inserted through
the inserting holes more smoothly.
5. The fiber-optic transmitting and receiving device as claimed in claim 1, wherein:
the transmitting and receiving head is formed with plural sockets for insertion
of connecting elements inside the transmitting and receiving head, the sockets
are in communication with plural mounting holes formed on another side of the transmitting
and receiving head, a retaining hole is formed on an inner wall of the respective
sockets and is located correspondingly to the height that the sockets to be positioned;
the plural independent feet are integrally formed bent members and made of metal
material, a first end of the respective independent feet is a connecting end, a
check retainer is protruded out of a surface of the first end and located adjacent
to a U-shaped bent portion of the respective independent feet, and the U-shaped
bent portion of the independent feet is inserted in the sockets of the transmitting
and receiving head, the connecting end is inserted in the mounting holes and the
check retainer is inserted in the retaining hole of the sockets.
6. The fiber-optic transmitting and receiving device as claimed in claim 5, wherein
an abutting block is provided on each of the independent feet and serves to insert
in the sockets of the transmitting and receiving head.
Description
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a fiber-optic transmitting and receiving device,
which is used on mainstream fiber-optic system. A cover is used to cover a metal
board and metal tips of the fiber-optic transmitting and receiving device, the
cover is formed with inserting groove and inserting holes respectively corresponding
to the metal board and the metal tips. The cover can protect the metal tips from
damage and prevent short circuit. Furthermore, the independent feet, which are
not covered by the cover, are provided with check retainers that are used to engage
in the sockets and the retaining holes on the transmitting and receiving head.
Through this way, the independent feet can be firmly fixed and so as to prevent
failures in assembly.
2. Description of the Prior Arts
So far, all the fiber-optic transmitting and receiving heads are made of plastic.
In this case, metal board should be used to synchronously produce positioning elastic
force and a function of contact transmission when the fiber-optic transmitting
and receiving head is positioned to other electronic elements. With reference to
FIGS. 1 and 2, a conventional fiber-optic transmitting and receiving head
10
usually uses a metal board
11 to cover a recess
12 and the metal
board
11 contacts the optic fibers inside the metal board. Through this
way, the signal can be transmitted via the metal tip
13. The metal board
11 is provided at the inner side with elastic member so as to elastically
fix the optic fibers. Furthermore, the conventional fiber-optic transmitting and
receiving head
10 is formed with receiving recess
15 corresponds
to the inner transmitting elements, and then U-shaped metal independent foot
16
is used to insert in the receiving recess
15. The receiving recess
15
is formed in a direction from which the independent foot
16 extends. The
U-shaped portion
161 of the independent foot
16 can produce an elastic
positioning effect. Such kind of fiber-optic transmitting and receiving device
has been used for a long period of time, however, it still has some disadvantages
that need to be improved as follows:
First, the metal board
11 is exposed since it directly covers the recess
12 of the fiber-optic transmitting and receiving head, thereby, the metal
board
11 is inclined to contact a surface of the circuit board, which will
lead to a short-circuit. The operator has to take time to reassemble it, besides,
a potential danger may exist (a short circuit will be probably caused when the
metal tip
13 of the metal board
11 contacts the circuit board).
Second, the metal tip
13 of the metal board
11 and the optic-transmitting
leg
14 of the fiber-optic transmitting and receiving head
10 are
very fragile, which are usually broken during assembly. Although the metal tip
13 is not dropped down, a bad contact between the metal tip
13 and
the optic-transmitting leg
14 will be caused.
Third, due to the independent foot
16 is elastically positioned by
elastic force produced by the U-shaped portion
161, when the independent
foot
16 is welded with other electronic elements at a high temperature,
the elastic force of the U-shaped portion
161 of the independent foot
16
will be affected by the high temperature. Furthermore, the independent foot
16
will probably be dropped out of the receiving recess
15 due to shortage
of the elastic force of the U-shaped portion
161. Thus, the operator has
to take time to reassembly the product.
Fourth, the independent foot
16 is positioned only by the elastic
force, and the height at which the independent foot
16 to be positioned
cannot be decided, during assembly, the operator is unable to decide the height
where the independent foot
16 to be positioned. Thereby, the independent
foot
16 is not easy to be fixed, this will result in a problem of bad contact.
The present invention has arisen to mitigate and/or obviate the afore-described
disadvantages of the conventional fiber-optic transmitting and receiving device.
SUMMARY OF THE INVENTION
The primary object of the present invention is to provide a fiber-optic transmitting
and receiving device capable of preventing improper short circuit. In which, the
metal board of the fiber-optic transmitting and receiving head is covered with
a cover, the cover is provided with bent arms that are used to fix the fiber-optic
transmitting and receiving head.
The secondary object of the present invention is to provide a fiber-optic transmitting
and receiving device that is easily assembled and firmly positioned. The independent
foot of the fiber-optic transmitting and receiving device is provided with a check
retainer adjacent to the bent portion. The check retainer is integrally formed
and projected from the base body of the independent foot. On the peripheral sides
of the fiber-optic transmitting and receiving head is formed with sockets and corresponding
retaining holes. The above-mentioned structure is able to overcome the problem
that the independent of the conventional fiber-optic head will be loosened, subject
to high temperature.
Another object of the present invention is to provide a fiber-optic transmitting
and receiving device that can be firmly positioned. In which, the metal tips of
the fiber-optic transmitting and receiving device are covered with the cover, and
the cover is formed with inserting grooves and inserting holes that are used to
receive the metal board and the metal tips. Through this way, the cover is capable
of protecting the metal tips from break.
The present invention will become more obvious from the following description
when taken in connection with the accompanying drawings, which show, for purpose
of illustrations only, the preferred embodiment in accordance with the present invention.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a perspective view of a conventional fiber-optic transmitting and
receiving device;
FIG. 2 is another perspective view of a conventional fiber-optic transmitting
and receiving device;
FIG. 3 is an exploded view of a fiber-optic transmitting and receiving device
in accordance with the present invention;
FIG. 4 is a partial perspective view of a fiber-optic transmitting and receiving
device in accordance with the present invention;
FIG. 5 is an assembly view of a fiber-optic transmitting and receiving device
in accordance with the present invention;
FIG. 6 is a perspective view of an independent foot in accordance with the present invention;
FIG. 7 is an exploded view of an independent foot in accordance with the present invention;
FIG. 8 is an assembly cross sectional view of an independent foot in accordance
with the present invention.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
Referring to FIGS. 3,
4,
6 and
7, a fiber-optic transmitting
and receiving device in accordance with the present invention is shown and generally
comprising a transmitting and receiving head
20, a cover
30 and a
plurality of independent feet
40.
The transmitting and receiving head
20 is integrally formed, on which
is formed with a Π-shaped socket
21, and at an end of the transmitting
and receiving head
20 is provided with three optic-transmitting legs
24.
The Π-shaped socket
21 corresponds to the fiber optic elements inside
the transmitting and receiving head
20. On the periphery of topside of the
socket
21 is provided with a groove
22, in which is received a metal
board
26 having a metal tip
261. The metal tip
261 is folded
and projected out of the surface of the metal board
26. On an end surface
of the optic-transmitting legs
24 is defined with a recess
25, in
both concave sides
27 of the Π-shaped socket
21 and in the
recess
25 of the transmitting and receiving head
20 is respectively
formed with a projection
23. The transmitting and receiving head
20
is further formed with sockets
28 that correspond to the connecting elements
inside the transmitting and receiving head
20 and the opening direction
is opposite to the assembly direction of the transmitting and receiving head
20.
The sockets
28 are in communication with plural mounting holes
201
formed on another side of the transmitting and receiving head
20. A square
retaining hole
29 is formed on an inner wall of the respective sockets
28
and open outward. The position of the square retaining hole
29 corresponds
to the height that the sockets
28 to be positioned.
The cover
30 is a non-conductive plastic cover corresponds to the socket
21 of the transmitting and receiving head
20, on outer periphery
of the cover
30 is provided with three bent arms
31a,
31b
and
31c. The bent arms
31a and
31b respectively
correspond to the both concave sides
27 of the Π-shaped socket
21
and the bent arm
31c corresponds to the recess
25 of the transmitting
and receiving head
25. When the cover
30 covers the Π-shaped
socket
21, the respective bent arms
31a,
31b and
31c will engage the projections
23 via a locking aperture
32, and the metal board
26 of the transmitting and receiving head
20 will be fully covered by the cover
30. The cover
30 is
formed with inserting groove
33 so as to correspond to the metal board
26
of the transmitting and receiving head
20, and further formed with inserting
holes
34 corresponding to the three optic-transmitting legs
24 and
the metal tip
261. The respective inserting holes
34 will firmly
abut the outer periphery of the optic-transmitting legs
24 and the metal
tip
261.
The respective independent feet
40 are bent members integrally formed
by metal material, each of which has a U-shaped bent portion
41 so as to
produce a predetermined elastic force. A first end of the each of the independent
feet
40 is a connecting end
42 and a second end of which is provided
with an abutting block
43. A check retainer
41 is protruded out of
a surface of the first end and located adjacent to the U-shaped bent portion
41.
The U-shaped bent portion
41 and the independent feet
40 are used
to insert firmly in the sockets
28 of the transmitting and receiving head
20, and the connecting end
42 inserts in the mounting holes
201
and the check retainer
44 inserts in the square retaining hole
29
of the sockets
28, so as to make the independent feet
40 contact
the connecting elements of the transmitting and receiving head
20.
Referring to FIG. 5, the cover
30 is a non-conductive plastic cover
corresponds to the socket
21 of the transmitting and receiving head
20,
and on outer periphery of the cover
30 is provided with three bent arms
31a,
31b and
31c. Furthermore, the cover
30 fully covers the metal board
26 of the transmitting and receiving
head
20. Thereby, the cover
30 ensures that the metal board
26
is isolated from the circuit board, so as to prevent short circuit. In this case,
the transmitting and receiving head in accordance with the present invention is
capable of preventing short circuit. On the other hand, the cover
30 is
formed with inserting grooves
33 corresponding to the metal board
26,
and further formed with inserting holes
34 corresponding to the three optic-transmitting
legs
24 and the metal tip
261. In this case, the cover
30
can closely and firmly covers the transmitting and receiving head
20, and
the respective inserting holes
34 will firmly abut the outer periphery of
the optic-transmitting legs
24 and the metal tip
261. Thus, the metal
tip
261 and the optic-transmitting legs
24 can be safely protected
from damage and the failure in production and assembly can be reduced as well.
Thereby, the transmitting and receiving head in accordance with the present invention
is capable of effectively preventing assembly defects.
Referring further to FIG. 4, the cover
30 must closely cover the
Π-shaped socket
21, so the periphery of the cover
30 is formed
with inclined locking surface A (the inner periphery of the inserting holes
34
also can be formed with inclined locking surface A). The inclined locking surface
A enables the cover
30 to be easily covered on the transmitting and receiving
head
20. The design of the inclined locking surface A makes the assembly
easy and improve the tightness of the product.
Referring to FIG. 8, when assembling the independent feet
40, the
user will insert the independent feet
40 in the socket
28 of the
transmitting and receiving head
20 so as to make the connecting ends
42
protrude out of the mounting holes
201. The U-shaped bent portion
41
and the independent feet
40 are inserted firmly in the sockets
28
of the transmitting and receiving head
20, and the check retainer
44
is inserted in the square retaining hole
29 of the sockets
28. The
independent feet
40 is precisely positioned when the check retainer
44
inserts in the square retaining hole
29, and the position of the independent
feet
40 can be prevented from being affected by high temperature caused
in soldering.
It is to be noted that the check retainer
44 is integrally formed and
protruded
from the independent feet
40. Thereby, the check retainer
44 is deformable
after being compressed by the inner wall of the sockets
28, so as to make
the insertion of the independent feet
40 inconvenient. And the check retainer
44 will be protruded out and fixed there automatically after entering the
square retaining hole
29. Thus, the independent feet
40 are fixedly positioned.
While we have shown and described various embodiments in accordance with the
present invention, it should be clear to those skilled in the art that further
embodiments may be made without departing from the scope of the present invention.
*
