U.S. patent application number 09/846248 was filed with the patent office on 2001-11-15 for lead-in clamp with electric wire protective casing.
Invention is credited to Shak, Man Huang.
Application Number | 20010040045 09/846248 |
Document ID | / |
Family ID | 4623764 |
Filed Date | 2001-11-15 |
United States Patent
Application |
20010040045 |
Kind Code |
A1 |
Shak, Man Huang |
November 15, 2001 |
Lead-in clamp with electric wire protective casing
Abstract
A lead-in clamp with electric wire protective casing are
disclosed. The electric wire protective casing is a long plastic
roll tube, whose longitudinal free edges are not sealed, but rather
can be expanded out and drawn back, on the roll tube there being
formed a series of uniformly spaced transverse recesses. The
lead-in clamp comprises left and right clamp stems, left and right
clamp bodies and a clamping spring. When the left and right clamp
bodies are fitted together, a wire passing cylinder and a casing
guiding head are formed. When in use, the wires are put into the
wire passing cylinder, then insert the casing guiding head into one
end of the wire protective casing tube. After the wire protective
casing tube is fixed stationary by hand, the lead-in clamp is
pushed toward the other end of the wire protective casing, thereby
to encase all of the wires into the wire protection casing.
Inventors: |
Shak, Man Huang; (Shenzhen,
CN) |
Correspondence
Address: |
RABIN & CHAMPAGNE, P.C.
Suite 500
1101 14th Street, N.W.
Washington
DC
20005
US
|
Family ID: |
4623764 |
Appl. No.: |
09/846248 |
Filed: |
May 2, 2001 |
Current U.S.
Class: |
174/135 |
Current CPC
Class: |
H02G 1/08 20130101; Y10T
29/53909 20150115; H02G 3/0475 20130101; H02G 1/085 20130101; H02G
9/06 20130101 |
Class at
Publication: |
174/135 |
International
Class: |
H01B 007/00 |
Foreign Application Data
Date |
Code |
Application Number |
May 10, 2000 |
CN |
00232918.2 |
Claims
1. A lead-in clamp with electric wire protective casing,
characterized in that it is a long plastic roll tube, whose
longitudinal free edges are not sealed, but rather can be expanded
out and drawn back, on the roll tube there being formed a series of
uniformly spaced transverse recesses to make the protective casing
tube more freely bendable.
2. The lead-in clamp with electric wire protective casing according
to claim 1, characterized in that said transverse recesses comprise
rectangular recesses which are not open to the free edges and
notches which are open to the free edges, both of the recesses
being alternately distributed over the wall of said plastic roll
tube.
3. A lead-in clamp with electric wire protective casing comprising
left and right clamp stems, left and right clamp bodies and a
clamping spring, characterized in that when said left and right
clamp bodies are fitted together, a wire passing cylinder and a
casing guiding head are formed.
4. The lead-in clamp with electric wire protective casing according
to claim 1, comprising left and right clamp stems, left and right
clamp bodies and a clamping spring, characterized in that when said
left and right clamp bodies are fitted together, a wire passing
cylinder and a casing guiding head are formed.
5. The lead-in clamp with electric wire protective casing according
to claim 2, comprising left and right clamp stems, left and right
clamp bodies and a clamping spring, characterized in that when said
left and right clamp bodies are fitted together, a wire passing
cylinder and a casing guiding head are formed.
Description
FIELD OF THE INVENTION
[0001] The present invention relates to the protection of electric
wires, in particular, to an electric wire protective casing and a
lead-in clamp to lead the electric wire into the protective
casing.
BACKGROUND OF THE INVENTION
[0002] With the development of science and technology, especially
the rapid development of information industry, computers,
telephones and facsimiles are now in common use in offices,
laboratories or even in households. A lot of electric wires often
pass through among such devices as the computer hardware, printer,
telephone, facsimile, duplicator and socket outlets, making them
appear to be in a muddle, and unpleasant to see. If all these wires
should be orderly encased in a protective casing, they would be not
only neat and tidy, but also safe and durable. Formerly, in order
to be neat and tidy, these wires were usually sheathed or encased
in metallic or plastic pipes. When permanently fixed wires are
encased in such a way as above, or even pipes containing the wires
therein are embedded into the preset groove in the wall or under
the floor, it does look neat and tidy, but the installation process
is complex and laborious. Moreover, it does not meet the
requirement of changes day after day.
[0003] The object of the present invention is to overcome the
above-mentioned difficulty by providing a lead-in clamp and an
electric wire protective casing. By means of the lead-in clamp, the
disorderly and confused wires can be conveniently, rapidly,
systematically and integrally encased into the wire protective
casing to make them neat and tidy, safe and durable.
SUMMARY OF THE INVENTION
[0004] The object of the present invention can be thus achieved,
namely, an electric wire protective casing is provided, which is a
long plastic roll tube, whose longitudinal free edges are not
sealed, but rather can be expanded out and drawn back. On the roll
tube there are formed a series of uniformly spaced, transverse
recesses to make the protective casing more freely bendable. The
transverse recesses comprise rectangular recesses which are not
open to the free edges and notches which are open to the free
edges, alternately distributed over the wall of the plastic roll
tube. The lead-in clamp, which is to lead wires into the wire
protective casing, comprises left and right clamp stems, left and
right clamp bodies and a clamping spring. Its features lie in that
when said left and right clamp bodies are fitted together, the wire
passing cylinder and the casing guiding head are formed.
BRIEF DESCRIPTION OF THE DRAWING
[0005] FIG. 1 is a schematic diagram of the lead-in clamp and the
wire protective casing of the present invention.
[0006] FIG. 2 is a front view of the wire protective casing of the
present invention.
[0007] FIG. 3 is a rear view of the wire protective casing of the
present invention.
[0008] FIG. 4 is an operating diagrammatic view showing how wires
are encased into the wire protective casing of the present
invention by means of the lead-in clamp of the present
invention.
[0009] On the figures:
[0010] 1--wire protective casing
[0011] 2--lead in clamp
[0012] 11--free edge
[0013] 12--free edge
[0014] 13--rectangular recesses
[0015] 14--notch
[0016] 15--roll tube
[0017] 21--left half clamp body
[0018] 22--right half clamp body
[0019] 23--mouth shaped dent
[0020] 24--clamping spring
[0021] 25--long and narrow through hole
[0022] 26--left clamp stem
[0023] 27--right clamp stem
[0024] 28--wire passing cylinder
[0025] 29--casing guiding head
DETAILED DESCRIPTION OF THE INVENTION
[0026] The following is a further description of the present
invention incorporating a preferred embodiment and the accompanying
drawings.
[0027] FIG. 1 is a schematic diagram of a preferred embodiment of
the present invention, the lower part being the wire protective
casing 1. As shown in FIG. 2 and FIG. 3, the wire protective casing
1 of the present utility model is a long plastic tube, the free
edges 11, 12 of which can be freely rolled, either expanded out or
drawn back. On the roll tube there are formed, uniformly spaced, a
series of transverse recesses. These recesses comprise rectangular
recesses 13 which are not open to the free edges and notches 14
which are open to the free edges. The recesses 13 and notches 14
are alternately distributed over the plastic roll tube 15, so that
the plastic roll tube can be conveniently and freely bent according
to requirement.
[0028] The upper part of FIG. 1 is a schematic diagram of the
lead-in clamp 2. It comprises left and right clamp stems 26, 27,
left and right clamp bodies 21, 22 and a clamping spring 24. Its
features lie in that when said left clamp body 21 and right clamp
body 22 are fitted together by the clamping force of the clamping
spring 24, a wire passing cylinder 28 and a casing guiding head 29
are formed.
[0029] When in use, first grasp with force the clamp stems 26 and
27 to open the clamp bodies 21, 22, then put the wires to be
encased into the wire passing cylinder 28 of the clamp. After the
loosening of the grip, the clamp bodies 21, 22 are fitted together
by the clamping force of the clamping spring 24. Then insert the
casing guiding head 29 into one end of the wire protective casing
tube (as shown in FIG. 4), and grasp the wire protective casing
tube. Then, the lead-in clamp is pushed toward the other end of the
wire protective casing tube until the full length of all the wire
has been encased in the wire protective easing tube.
[0030] The wire protective casing tube has freely expanding and
contracting functions. A plurality of wires can be smoothly encased
in the wire protective casing tube by means of the lead-in clamp.
Lead-in clamp 2 and wire protective casing tube 1 of different
sizes (here mainly referring to the natural diameter of the roll
tube and that of the wire passing cylinder, that is, the diameters
when no expanding force is applied) can be produced to meet the
requirements of varied plurality of wires.
[0031] Consequently, it is quite evident that disorderly and
unsystematic wires can be conveniently, rapidly, systematically and
integrally encased in the wire protective casing by means of the
lead-in clamp based on the present invention to make them neat and
tidy, safe and durable, thus achieving the object of the
invention.
* * * * *