Note: Descriptions are shown in the official language in which they were submitted.
SMALL FORM-FACTOR PLUGGABLE TRANSCEIVER
BACKGROUND OF THE INVENTION
1. Field of the Invention
[0001] The present disclosure relates to a pluggable transceiver; in
particular, to a small form-factor pluggable (SFP) transceiver.
2. Description of Related Art
[0002] Conventional SFP transceiver is inserted into an electrical
connection slot of an electronic apparatus and engaged therewith. If a user
wants to separate the conventional SFP transceiver from the electrical
connection slot, the engagement between the conventional SFP transceiver and
the electrical connection slot can be released by using an unlocking member of
the conventional SFP transceiver. However, the conventional SFP transceiver
is not convenient because the engagement and the disengagement between the
conventional SFP transceiver and the electrical connection slot cannot be
directly observed outside the conventional SFP transceiver.
SUMMARY OF THE INVENTION
[0003] The present disclosure provides a small form-factor pluggable
(SFP) transceiver to solve the drawbacks associated with conventional SFP
transceivers, e.g., the engagement and the disengagement between the
conventional SFP transceiver and the electrical connection slot cannot be
directly observed outside the conventional SFP transceiver.
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[0004] The present disclosure discloses a small form-factor pluggable
(SFP) transceiver for being inserted into an electrical connection slot of an
electronic apparatus. The SFP transceiver includes a housing, two electrical
signal connectors, and an unlocking assembly. The housing has a front end, a
rear end opposite the front end, a top surface, a bottom surface opposite the
top
surface, and an engaging portion disposed on the bottom surface. When the
SFP transceiver is inserted into the electrical connection slot, the engaging
portion is engaged with the electrical connection slot. The two electrical
signal
connectors are disposed on the front end of the housing. The unlocking
assembly includes an unlocking member and an interlock member. The
unlocking member is pivotally connected to the housing and includes a
manipulating portion. The manipulating portion is exposed at the front end and
is arranged adjacent to the top surface. The manipulating portion is
configured
to be rotated in a direction away from the front end and the top surface by an
external force. The interlock member is movably disposed on the housing.
When the manipulating portion is rotated in the direction away from the front
end and the top surface, the unlocking member moves the interlock member
such that the engaging portion is out of engagement with the electrical
connection slot.
[0005] In summary, the unlocking member of the SFP transceiver of the
present disclosure can be rotated relative to the housing so that the
engagement
or disengagement between the SFP transceiver and the electrical connection
slot can be directly and easily observed from the position of the unlocking
member.
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[0006] In order to further appreciate the characteristics and
technical
contents of the present disclosure, references are hereunder made to the
detailed descriptions and appended drawings in connection with the present
disclosure. However, the appended drawings are merely shown for exemplary
purposes, and should not be construed as restricting the scope of the present
disclosure.
BRIEF DESCRIPTION OF THE DRAWINGS
[0007] Fig. 1 is a perspective view showing a small form-factor
pluggable (SFP) transceiver according to a first embodiment of the present
disclosure;
[0008] Fig. 1A is a front view of Fig. 1;
[0009] Fig. 2 is an exploded view of Fig. 1;
[0010] Fig. 3 is an exploded view of Fig. 1 from another perspective;
[0011] Fig. 4 is a cross-sectional view of the SFP transceiver
according
to the first embodiment of the present disclosure;
[0012] Fig. 5 is a cross-sectional view showing the SFP transceiver of
Fig. 4 in operation;
[0013] Fig. 6 is a perspective view showing the SFP transceiver
according to a second embodiment of the present disclosure;
[0014] Fig. 7 is an exploded view of Fig. 6;
[0015] Fig. 8 is a cross-sectional perspective view of a front plate
of the
SFP transceiver according to the second embodiment of the present disclosure;
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[0016] Fig. 9 is a cross-sectional perspective view of the SFP
transceiver
according to the second embodiment of the present disclosure;
[0017] Fig. 10 is a cross-sectional perspective view of the front
plate of
the SFP transceiver of another structure according to the second embodiment of
the present disclosure;
[0018] Fig. 11 is a perspective view showing the SFP transceiver
according to a third embodiment of the present disclosure; and
[0019] Fig. 12 is an exploded view of Fig. 11.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
[0020] [First embodiment]
[0021] Reference is made to Figs. 1 to 5, which illustrate a first
embodiment of the present disclosure. The present embodiment discloses a
small form-factor pluggable (SFP) transceiver 1, which can be electrically
connected to two electrical signal wires and inserted into an electrical
connection slot of an electronic apparatus, e.g., a switch or a router so that
electrical signals from the two electrical signal wires can be converted by
the
SFP transceiver 1, and then be transmitted to the electronic apparatus through
the SFP transceiver 1.
[0022] As shown in Figs. 1 to 3, the SFP transceiver 1 includes a
housing 10, an unlocking assembly 20, two electrical signal connectors 30, two
flexible assemblies 40, and a circuit board 50. The housing 10 includes an
upper cover 11 and a lower cover 12. The upper cover 11 and the lower cover
12 in the present embodiment are connected to each other so as to form the
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housing 10 defining an accommodating space SP therein, as shown in Fig. 4.
The two flexible assemblies 40 and the circuit board 50 are arranged in the
accommodating space SP. In practical applications, the upper cover 11 and/or
the lower cover 12 can be made of an anti-electromagnetic interference
material, such as zinc alloy, but the present disclosure is not limited
thereto.
The connection mechanism between the upper cover 11 and the lower cover 12
can be determined according to design requirements. For example, the
connection mechanism between the upper cover 11 and the lower cover 12 can
be an engaging connection, an adhering connection, or a soldering connection.
[0023] The housing 10 has a front end 10a, a rear end 10b opposite the
front end 10a, a top surface 10A, and a bottom surface 10B opposite the top
surface 10A. The top surface 10A is a surface of the upper cover 11 arranged
away from the lower cover 12, and the bottom surface 10B is a surface of the
lower cover 12 arranged away from the upper cover 11. The front end 10a of
the housing 10 is fastened to the two electrical signal connectors 30, and the
rear end 10b of the housing 10 is inserted into the electrical connection slot
of
the electronic apparatus. The housing 10 has an engaging portion 10C
outwardly protruding from the bottom surface 10B. When the SFP transceiver
1 is inserted into the electrical connection slot, the engaging portion 10C is
engaged with a mating structure of the electrical connection slot, thereby
firmly
fastening the SFP transceiver 1 to the electrical connection slot.
[0024] The upper cover 11 has an upper front plate 111 located at the
front end 10a of the housing 10, and the lower cover 12 has a lower front
plate
121 located at the front end 10a of the housing 10. When the upper cover ibis
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connected to the lower cover 12, and the upper front plate 111 and the lower
front plate 121 are jointly defined as a front plate 13. The two electrical
signal
connectors 30 and part of the unlocking assembly 20 are disposed on the front
plate 13. The upper front plate 111 and the lower front plate 121 are
respectively formed with two openings for accommodating the two electrical
signal connectors 30. In a preferred embodiment, when the upper front plate
111 and the lower front plate 121 are connected to each other, the two
electrical
signal connectors 30 are seamlessly connected to the front plate 13. The
housing 10 includes a front opening 1OF and a top opening 10G, and the front
opening 1OF and the top opening 10G in the present embodiment are in air-
communication with each other. The front opening 1OF can be formed in a
portion of the front plate 13 adjacent to the upper cover 11, and the top
opening
10G can be formed in a portion of the upper cover 11 adjacent to the front
plate
13. In the present embodiment, the front opening 1OF is formed in the upper
front plate 111.
[0025] The
unlocking assembly 20 includes an unlocking member 21
and an interlock member 22. The unlocking member 21 includes a pivotal
portion 211, a manipulating portion 212, and a driving portion 213. The
pivotal portion 211 of the unlocking member 21 is pivotally connected to the
front plate 13. The housing 10 can include a pivotal structure 10D, and the
pivotal portion 211 of the unlocking member 21 is pivotally connected to the
pivotal structure 10D. In the present embodiment, the pivotal structure 10D is
arranged on the upper front plate 111 and faces the accommodating space SP,
and the pivotal portion 211 of the unlocking member 21 is pivotally connected
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to the pivotal structure 10D of the front plate 13. In other embodiments of
the
present disclosure, the pivotal structure 10D can be arranged on the lower
front
plate 121, or the pivotal structure 10D can be arranged on both of the upper
front plate 111 and the lower front plate 121.
[0026] When the unlocking member 21 is pivotally connected to the
front plate 13, the manipulating portion 212 is exposed at the front end 10a
of
the housing 10. Specifically, a part of the manipulating portion 212 is
exposed
at the top surface 10A of the housing 10, and the driving portion 213 is
arranged in the accommodating space SP of the housing 10. Accordingly, the
part of the manipulating portion 212 exposed at the top surface 10A is easily
reachable such that the unlocking member 21 can be rotated in a direction away
from the upper cover 11 and the front plate 13.
[0027] In the present embodiment, the pivotal portion 211 of the
unlocking member 21 is a shaft, and the pivotal structure 10D of the upper
front plate 111 is a groove corresponding in shape to the shaft, but the
present
disclosure is not limited thereto. As shown in Fig. 1, the upper cover 11
includes a concavity 112 formed on a portion of the top surface 10A and
adjacent to the top opening 10G. The part of the manipulating portion 212
exposed at the top surface 10A is arranged in the concavity 112 so that the
manipulating portion 212 of the unlocking member 21 can be rotated easily.
[0028] Specifically, when the unlocking member 21 is pivotally
connected to the front plate 13, the unlocking member 21 covers the front
opening 1OF and the top opening 10G, and a distance G (as shown in Fig. 4)
between the unlocking member 21 and a side wall defining the top opening
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10G is less than 0.5mm, thereby effectively reducing electromagnetic
interference caused by external signals entering the housing 10. Preferably,
the
unlocking member 21 can be made of an anti-electromagnetic interference
material. In practical applications, the unlocking member 21 and the housing
are made of zinc alloy, thereby effectively reducing electromagnetic
interference. The concavity 112 can be in air-communication with the top
opening 10G, and the manipulating portion 212 corresponds in position to the
concavity 112 and the top opening 10G.
[0029] The interlock member 22 can be disposed on the lower cover 12
and is connected to the driving portion 213 of the unlocking member 21. As
shown in Figs. 4 and 5, when the manipulating portion 212 of the unlocking
member 21 is rotated away from the housing 10 by an external force, the
unlocking member 21 moves the interlock member 22 toward the engaging
portion 10C with the driving portion 213 such that the interlock member 22
presses the mating structure of the electrical connection slot engaged with
the
engaging portion 10C, thereby releasing the engaging portion 10C from the
engagement with the electrical connection slot. Afterwards, the SFP
transceiver 1 can be retracted from the electrical connection slot.
[0030] Specifically, the housing 10 includes a grooved track 122
formed
on the bottom surface 10B or on one side of the lower cover 12 arranged away
from the upper cover 11, and the track 122 is in air-communication with the
accommodating space SP. The interlock member 22 is slidably arranged in the
track 122, a side portion of the interlock member 22, i.e., the left side
portion of
the interlock member 22 as shown in Fig. 4, is arranged in the accommodating
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space SP, and the interlock member 22 includes a slot 221 formed on the side
portion thereof. The driving portion 213 of the unlocking member 21 is
engaged with the slot 221. When the unlocking member 21 is rotated relative
to the housing 10 by the external force, the driving portion 213 presses an
inner
wall of the slot 221 such that the interlock member 22 is moved relative to
the
housing 10.
[0031] In practical applications, the housing 10 further includes a
limiting structure 10E configured to limit a rotation angle of the unlocking
member 21 with respect to the housing 10. The limiting structure 10E can be
arranged adjacent to the pivotal structure 10D and can be arranged on the
front
plate 13. Moreover, the limiting structure 10E is preferably configured to
limit
the rotation angle of the unlocking member 21 to a range of 15 to 30 degrees.
For example, when the manipulating portion 212 of the unlocking member 21
is rotated away from the housing 10, a part of the unlocking member 21 abuts
against a slanting surface of the limiting structure 10E and is therefore
limited
by the limiting structure 10E. In practical applications, the pivotal
structure
10D can be integrally formed as a one-piece unit with the limiting structure
10E.
[0032] As shown in Fig. 1A, the two electrical signal connectors 30
are
arranged along a first diagonal of the front plate 13, and the unlocking
member
22 is arranged along a second diagonal of the front plate 13. In other words,
in
the front view, the unlocking member 22 is arranged on an upper right side of
the front plate 13 so that the relative position between the unlocking member
22 and the housing 10 can be observed from an upper side of the housing 10 (or
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the top surface 10A). Thus, the engagement and the disengagement between
the SFP transceiver 1 and the electrical connection slot can be directly and
easily observed from the top surface 10A of the SFP transceiver 1.
Specifically, Fig. 4 shows the engagement between the SFP transceiver 1 and
the electrical connection slot, in which the unlocking member 21 substantially
covers the top opening 10G. Fig. 5 shows the disengagement between the SFP
transceiver 1 and the electrical connection slot, in which the unlocking
member
22 is tilted with respect to the housing 10 and protrudes from the front end
10a
of the housing 10, and the top opening 10G is mostly uncovered.
[0033] [Second embodiment]
[0034] Reference is made to Figs. 6 to 9, which illustrate the SFP
transceiver 1' according to a second embodiment of the present disclosure. The
SFP transceiver 1' in the present embodiment includes a housing 10, an
unlocking assembly 20, two electrical signal connectors 30, two flexible
assemblies 40, and a circuit board 50. The following description discloses the
difference between the present embodiment and the first embodiment.
[0035] In the present embodiment, the housing 10 is formed by
assembling an upper cover 11, a lower cover 12, and a front plate 13 together,
in which the front plate 13 is at the front end 10a of the housing 10. The
upper
cover 11, the lower cover 12, and the front plate 13 are three independent
components, and the connection mechanisms therebetween can be determined
respectively according to design requirements.
[0036] As shown in Figs. 8 and 9, the front plate 13 includes a
plastic
layer 131 and a metallic layer 132, which respectively define two opposite
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main surfaces of the front plate 13. The plastic layer 131 and the metallic
layer
132 have two through holes 13A penetrating through the front plate 13, thereby
respectively accommodating the two electrical signal connectors 30. The
plastic layer 131 is disposed on (or stacked on) an outer surface of the
metallic
layer 132 and partially defines an outer surface of the housing 10, and an
inner
surface of the metallic layer 132 partially defines a boundary of the
accommodating space SP. In practical applications, the metallic layer 132 and
the plastic layer 131 can be formed by an injection-molding process.
[0037] The front
plate 13 includes two plastic structures 13B
respectively arranged in the two through holes 13A and connected to the
metallic layer 132. When the two electrical signal connectors 30 are
respectively disposed in the two through holes 13A, the two plastic structures
13B are located between the metallic layer 132 and the two electrical signal
connectors 30, in which the two electrical signal connectors 30 are separated
from the metallic layer 132 by the two plastic structures 13B. Moreover, the
two plastic structures 13B are integrally connected to the plastic layer 131,
thereby reinforcing the structural strength of the two plastic structures 13B.
More specifically, the metallic layer 132 has two ring-shaped grooves 1321
formed on the inner surface thereof and partially defining the boundary of the
accommodating space SP. The two grooves 1321 are respectively formed
around and in air-communication with the two through holes 13A, and an
aperture of each of the two grooves 1321 is larger than that of the
corresponding through hole 13A. The two grooves 1321are respectively filled
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with the two plastic structures 13B, thereby enhancing the connections between
the two plastic structures 13B and the metallic layer 132.
[0038] Accordingly, the metallic layer 132 and the plastic layer 131
of
the front plate 13 effectively shield external electromagnetic interference so
that the signal transmission performance of the SFP transceiver 1' can be
improved. It should be noted that the upper front plate 111 and the lower
front
plate 121 of the first embodiment can be formed of the plastic layer 131, the
metallic layer 132, and the plastic structures 13B.
[0039] As shown in Figs. 7 and 8, the metallic layer 132 includes a
ring-
shaped shielding structure 1322 arranged on an edge thereof, and the upper
cover 11 and the lower cover 12 respectively includes a shielding structure
113,
123. When the front plate 13, the upper cover 11, and the lower cover 12 are
assembled together, the shielding structure 1322 of the front plate 13 is
engaged with the shielding structures 113, 123 of the upper cover 11 and the
lower cover 12. Moreover, the shielding structure 1322 of the front plate 13
is
a part of the metallic layer 132 so that the electromagnetic shielding effect
of
the SFP transceiver 1' can be effectively improved. An upper half part of the
shielding structure 1322 of the front plate 13 and the shielding structures
113 of
the upper cover 11 can be a convex structure and a concave structure
respectively, and a lower half part of the shielding structure 1322 of the
front
plate 13 and the shielding structures 123 of the lower cover 12 can be a
convex
structure and a concave structure respectively, thereby enhancing the
electromagnetic shielding effect of the SFP transceiver 1'. In addition, the
connection strength of the front plate 13, the upper cover 11, and the lower
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cover 12 can be enhanced by the engagement of the shielding structure 1322 of
the front plate 13 with shielding structure 113 123 of the upper cover 11 and
the
lower cover 12 respectively. The upper cover 11 and/or the lower cover 12 can
be made of an anti-electromagnetic interference material, such as zinc alloy,
and the shielding structure 1322 of the front plate 13 can also be made of an
anti-electromagnetic interference material, such as zinc alloy. It should be
noted that the pivotal structure 10D pivotally connected to the unlocking
member 21 can be integrally formed with the metallic layer 132 and be
regarded as a part of the front plate 13, thereby effectively enhancing the
structural strength of the pivotal structure 10D. Furthermore, the limiting
structure 10E can be integrally formed with the metallic layer 132 and be
regarded as a part of the front plate 13.
[0040] As shown in Fig. 9, the upper cover 11 in the present
embodiment
has a protruding structure 114 corresponding in position to an inner wall of
the
lower cover 12. When the upper cover 11 and the lower cover 12 are
assembled together, the protruding structure 114 abuts against the inner wall
of
the lower cover 12 such that the electromagnetic shielding performance of the
upper cover 11 and the lower cover 12 is improved. In other embodiments of
the present disclosure, the lower cover 12 can be formed with a structure
similar to the protruding structure 114, i.e. the upper cover 11 and the lower
cover 12 respectively include a protruding structure 114 and a structure
similar
thereto.
[0041] As shown in Fig. 8, the front plate 13 has a limiting portion
13C
arranged on a lower part thereof and corresponding in position to the lower
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cover 12. When the front plate 13, the upper cover 11, and the lower cover 12
are assembled together, the limiting portion 13C is located at a front side of
the
track 122 to limit the motion of the interlock member 22. Moreover, the
limiting portion 13C can be integrally formed with the metallic layer 132,
thereby being provided with a better structural strength.
[0042] As shown in Fig. 10, the front plate 13 can be formed with
another structure, which includes the metallic layer 132 and the two plastic
structures 13B. In other words, the front plate 13 shown in Fig. 10 is
provided
without the plastic layer 131. Specifically, when the two electrical signal
connectors 30 are fastened to the front plate 13 (as shown in Fig. 6), the two
plastic structures 13B are still located between the metallic layer 132 and
the
two electrical signal connectors 30. Each of the two plastic structures 13B
has
a ring shape, and a thickness of a part of each plastic structure 13B arranged
in
the corresponding through hole 13A is less than that of the other part of each
plastic structure 13B exposed at the metallic layer 132 so that the connection
strength between the metallic layer 132 and the two plastic structures 13B can
be enhanced.
[0043] [Third embodiment]
[0044] Reference is made to Figs. 11 and 12, which illustrate the SFP
transceiver 1" according to a third embodiment of the present disclosure. The
SFP transceiver 1" in the present embodiment includes a housing 10, an
unlocking assembly 20, two electrical signal connectors 30, two flexible
assemblies 40, and a circuit board 50. The housing 10 in the present
embodiment includes an upper cover 11, a lower cover 12, and a front plate
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13'. The following description discloses the difference between the present
embodiment and the first and second embodiments.
[0045] In the present embodiment, when the upper cover 11, the lower
cover 12, and the front plate 13' are assembled together, an outer surface of
the
front plate 13' is coplanar with an end portion of the upper cover 11 and the
lower cover 12, which are arranged around the outer surface of the front plate
13'. The front plate 13' of the present embodiment is substantially identical
to
that of the second embodiment. For example, the front plate 13' includes a
plastic layer 131 and a metallic layer 132, which respectively define two
opposite main surfaces of the front plate 13'; the plastic layer 131 defines a
part
of an outer surface of the housing 10, and an inner surface of the metallic
layer
132 defines a part of a boundary of the accommodating space SP. Moreover,
the detail description of the front plate 13' can be referred to the second
embodiment.
[0046] The following description discloses other features of the
present
embodiment that are not described above. However, it should be noted that the
following features of the present embodiment can also be applied to the first
and second embodiments.
[0047] As shown in Fig. 12, each of the two electrical signal
connectors
30 has an inserting end 30a and a connecting end 30b opposite the inserting
end
30a. The inserting end 30a is arranged outside the front end 10a of the
housing
10, and the connecting end 30b is arranged in the accommodating space SP.
The circuit board 50 is fixed to the housing 10 and is arranged in the
accommodating space SP. Each of the two flexible assemblies 40 has two
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opposite ends respectively and detachably connected to the circuit board 50
and
the corresponding electrical signal connector 30. The SFP transceiver 1" is
configured to receive a signal, which travels from each of the two electrical
signal connectors 30 to the circuit board 50 through the corresponding
flexible
assembly 40. Each of the two flexible assemblies 40, each of the electrical
signal connectors 30, and the circuit board 50 can be independently tested
before or after being assembled together. In the present embodiment, the two
electrical signal connectors 30, the two flexible assemblies 40, and the
circuit
board 50 are detachably assembled together so that when one of the two
electrical signal connectors 30, the two flexible assemblies 40, and the
circuit
board 50 fails, the SFP transceiver 1" can be fixed by providing a substitute
for
the component that fails. It should be noted that the flexible assemblies 40
and
the circuit board 50 are not composite boards.
[0048] In
addition, the two electrical signal connectors 30, the two
flexible assemblies 40, and the circuit board 50 are produced independently so
as to achieve better impedance matching for the SFP transceiver 1" by proper
selections of the flexible assemblies 40 that match the two electrical signal
connectors 30 and the circuit board 50, thereby enhancing the signal
transmission performance of the SFP transceiver 1".
Furthermore,
conventional electrical signal connectors are soldered on a circuit board, and
the force generated from insertion and pulling the conventional electrical
signal
connectors will be exerted on the soldered joints between the conventional
electrical signal connectors and the circuit board, which causes damage to
conventional SFP transceivers. In the present disclosure, the two electrical
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signal connectors 30 are connected to the circuit board 50 through the two
flexible assemblies 40 so that force generated from insertion and pulling of
the
electrical signal connectors 30 will mostly be absorbed by the flexible
assemblies 40. Thus, the SFP transceiver 1" of the present embodiment can
solve the problems associated with the vulnerability of the soldered
connections between the conventional electrical signal connector and the
circuit
board.
[0049] In practical applications, each electrical signal connector 30
includes a signal terminal and four grounding terminals 32 arranged on the
connecting end 30b thereof, and each flexible assembly 40 has a plurality of
positioning holes arranged on an end thereof. When each of the two electrical
signal connectors 30 is connected to the corresponding flexible assembly 40,
the signal terminal 31 and the four grounding terminal 32 are respectively
inserted and soldered into the positioning holes.
[0050] As shown in Fig. 12, each of the two flexible assemblies 40
includes a flexible board 41 and a supporting plate 42, in which the
supporting
plate 42 is connected between an end of the flexible assembly 40 and the
electrical signal connector 30, thereby enhancing the structural strength of
the
flexible board 41. In practical applications, a structural strength of the
supporting plate 42 is larger than that of the flexible board 41; in other
embodiments, the supporting plate 42 and the flexible board 41 are made of the
same material.
[0051] The descriptions illustrated supra set forth simply the
preferred
embodiments of the present disclosure; however, the characteristics of the
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present disclosure are by no means restricted thereto. All changes,
alterations,
or modifications conveniently considered by those skilled in the art are
deemed
to be encompassed within the scope of the present disclosure delineated by the
following claims.
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