JP3286746B2 - Video pair line type branching / distributor - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a video pair line type branching / distributing device which can be easily mounted during construction.

[0002]

2. Description of the Related Art FIG. 10 shows a conventional video pair line type branching / distributing device, wherein (A) is a plan view showing a state in which a protective cover is removed from a body, and (B) is a state in which a protective cover is attached to the body. FIG.

[0003] In these drawings, reference numeral 11 denotes a body, and a large number of connection terminals 22 are arranged in a row on the surface side of the body 11. On the other hand, reference numeral 33 denotes a protective cover detachably mounted on the body 11.
A P plate block 44 on which an attenuation circuit is mounted is provided inside. The body 11 and the protective cover 44 are connected by a lead wire 55.

[0004]

However, in the conventional video pair line type branching / distributing device described above,
Since the body 11 side is attached to a wall surface or the like, and the respective connection terminals 22 are connected, the body 11 side and the protective cover 33 side must be connected with the lead wire 55, so that the workability is inferior. In addition, since the connection at each connection terminal 22 is also performed by screwing with each screw 66 at each connection terminal 22, each screw is loosened, each core wire is wound, and then each screw is tightened. Therefore, there is a problem that it takes time and effort, and the workability is poor.

The present invention has been made in view of the above points, and eliminates the connection of the lead wires between the body and the protective cover, and provides a means for simplifying the connection in place of the screw connection method. Accordingly, it is an object of the present invention to provide a video pair line type branching / distributing device capable of improving the mounting workability and the workability.

[0006]

In order to achieve the above object, according to the first aspect of the present invention, there is provided a body back cover attached to a wall, a body detachably attached to the body back cover, A P plate block mounted with a damping circuit integrally mounted on the back of the body and housed between the body and the back cover, and a protective cover detachably attached to the body, A common electric wire insertion hole is formed in each of the P plate block and the back cover of the main body, and quick connection terminals are arranged in rows on both sides in the short direction of the body.

According to a second aspect of the present invention, there is provided a body back cover attached to a wall surface, a body detachably mounted on the body back cover, a body accommodated between the body and the body back cover, and a back surface of the body. And a protective cover detachably mounted on the body, and provided with a wire-distributing groove on both longitudinal sides of the body. It is characterized by having.

According to a third aspect of the present invention, in the second aspect,
It is characterized in that the groove for arranging electric wires is formed with a downward slope.

According to a fourth aspect of the present invention, in the first aspect, the attaching / detaching means for attaching and detaching the body and the protective cover is provided for elastically engaging the inner surface of the protective cover to attach the body and the protective cover. The present invention is characterized in that a projecting portion and a detachable projecting piece formed integrally with the projecting portion and releasing the engagement of the projecting portion by pressing are provided on the body side.

According to a fifth aspect of the present invention, in the first to third aspects, the protective cover has a weak portion which can be punched out by application of an external force to become a wire insertion hole, and the weak portion is formed in the lower half. Are characterized in that they are thin, the upper half is formed thick, and a kerf is formed at their boundary.

[0011]

According to the first aspect of the present invention,
Since the P-plate block is integrally attached to the rear surface of the body instead of the protective cover, there is no need to connect the protective cover and the body with a lead wire during construction, thus improving workability. .

Further, the electric wire can be led out of the body through the electric wire insertion hole, and the core of the electric wire can be easily connected to the quick connection terminals arranged on both sides in the lateral direction of the body by one-touch type insertion. Therefore, the workability in the case of the embedded wiring is improved.

According to the second and third aspects of the present invention, the electric wires can be stably arranged and fixed in the electric wire distribution grooves.
When the groove is formed so as to have a downward slope in the longitudinal direction of the body as in the invention, supportability for the electric wire arranged and fixed in the groove is improved, and the electric wire is displaced. The wire can be held without any stress, and there is no possibility that an unnecessary stress is applied to the electric wire to cause a connection failure.

According to the fourth aspect of the present invention, since the projecting portion provided on the body side is elastically engaged with the inner surface of the protective cover, the body and the protective cover can be mounted. The protective cover can be easily attached simply by pushing the protective cover firmly into the body from above.On the other hand, when removing the protective cover, the detachable projection formed integrally with the protrusion By pressing the protruding portion slightly inward, the locking of the protruding portion on the inner surface of the protective cover can be easily released, and the protective cover can be removed from the body side in a one-touch manner. . Therefore, inspection and repair work can be performed efficiently.

Further, according to the invention of claim 5, by applying an external force to the lower half side of the fragile portion formed thin, the lower half side is easily punched through the incision and opened. If an external force is applied to the upper half side of the thick structure, the entire fragile portion can be easily punched out and an opening having a size twice as large as the above opening can be provided. Therefore, for example, in the case of two lines, an opening formed by punching only the lower half side is used, and in the case of four lines, an opening formed by punching the entire fragile portion is used. One product can be used in two ways, increasing usage.

[0016]

BRIEF DESCRIPTION OF THE DRAWINGS FIG.
One embodiment of the distributor will be described with reference to the drawings.

FIG. 1 is a block diagram showing a video pair line type branching apparatus according to the present invention.
FIG. 2 is an exploded perspective view of the distributor, and FIG. 2 is a perspective view of the same when assembly is completed (before attaching the protective cover). The image pair line type branching / distributor A includes a body 1 and a back of a main body attached to a wall surface. A cover 3 and a P-plate block 2 mounted between the body 1 and the body back cover 3 and mounted with an attenuation circuit integrally attached to the back of the body 1;
A protective cover 4 is detachably covered on the body 1.

Then, among the above-mentioned components, P
The plate block 2 is formed with an electric wire insertion hole 5a at a central portion thereof, and quick connection terminals 6 are provided on both sides of the electric wire insertion hole 5a.
Is provided. 7 is a dummy resistor connection switch, 8
Are mounting holes provided at the four corners of the P plate block 2, and 9 is inserted through the mounting hole 8 so that P
Screws 10a for fixing the plate block 2 itself are provided on both sides of the electric wire insertion hole 5, and are mounting holes for fixing and holding the image pair line type branching / distributor A on the wall surface during assembly. In addition, fasteners (not shown) are inserted into the mounting holes 10a.

The body 1 includes the P plate block 2.
A wire insertion hole 5b corresponding to the set position of the wire insertion hole 5a and being communicable with the wire insertion hole 5a is formed, and corresponds to the set position of the mounting hole 10a on both sides of the wire insertion hole 5b. And a mounting hole 10b communicable with the mounting hole 10a.
Are formed. A pair of openings 11 are provided on both sides of the electric wire insertion hole 5b. When the P plate block 2 is attached and fixed to the back surface of the body 1, the openings 11
The quick connection terminal 6 of the plate block 2 is exposed. Further, at both ends of the electric wire insertion hole 5b, that is, on both sides in the longitudinal direction of the body, a pair of grooves 12 for distributing electric wires (preferably, as shown in FIG. Formed on the outer surface of the body 1 on both the left and right sides of one of the grooves 12, a protrusion 13 that is resiliently locked to the inner surface of the protective cover 4 when the body 1 and the protective cover 4 are mounted. A detachable projection 14 is formed integrally with the projecting portion 13 and can release the engagement of the projecting portion 13 by pressing when the body 1 and the protective cover 4 are detached. Reference numeral 15 denotes a fitting hole for fitting the locking claw 16 of the main body back cover 3 and integrally attaching the main body back cover 3 to the body 1, and is a lower edge of both sides in the longitudinal direction of the body 1. There are a total of four locations.

The body back cover 3 is formed with an electric wire insertion hole 5c corresponding to the set position of the electric wire insertion holes 5a and 5b and capable of communicating with the electric wire insertion holes 5a and 5b. A mounting hole 10c is formed corresponding to the set position of the mounting holes 10a, 10b and communicable with these mounting holes 10a, 10b. The locking claws 16 fitted in the fitting holes 15 of the body 1 are provided at positions corresponding to the fitting holes 15 respectively.

Further, when the protective cover 4 is covered with the body 1, a pair of fragile portions 17 are formed in the protective cover 4 at positions corresponding to the electric wire arranging grooves 12 of the body 1. By pressing the fragile portion 17 in a knock-out manner in accordance with the condition (1), it is configured to be able to form a through hole. This fragile portion 17 will be described in detail with reference to FIG.
As shown by, the thickness is formed in the thick portion 17a in the upper half and the thin portion 17b in the lower half with the cut groove 18 as a boundary, so when the thin portion 17b is pressed with the cut groove 18 as a boundary, Only the thin portion 17b is punched out, and two wires can be made as shown in FIGS. 4 (A) and 4 (B).
When the thick portion 17a is pressed, the thick portion 17a is also a weak portion which is thinner than the other portions of the protective cover 4, so that the entire weak portion 17 is punched out, as shown in FIGS. 5 (A) and 5 (B). In addition, it is configured such that four lines can be connected.

Next, the operation of the image pair line type branching / distributing device according to the above embodiment will be described. The P plate block 2 is screwed to the back side of the body 1 and then the main body back cover 3 is attached to the body 1 Attach to Thereafter, in the case of the exposed wiring, as shown in FIG.
A wire B is disposed inside the wire B, and each core wire b of the wire B is inserted into each quick connection terminal 6, thereby completing the connection with one touch. In the case of embedded wiring, as shown in FIGS. 8A and 8B, each core wire b of the electric wire B led out from the electric wire insertion hole 5b to the front side of the body 1 is connected to each of the quick connection terminals 6. To terminate the connection in a one-touch manner. Thereafter, when the protective cover 4 is put on the body 1 and pressed down firmly, the protruding portion 13 of the body 1 is pushed inward against the elastic force due to the lowering of the wall end of the protective cover 4. As a result of being elastically locked to the inner wall of the protective cover 4, the protective cover 4 is covered by the body 1, and the protective cover 4 is mounted on the body 1.

On the other hand, when removing the protective cover 4 from the body 1, when the release projection 14 is pushed inward, the projection 13 provided integrally with the release projection 14 is As a result of being slightly pushed inward against the elastic force, the locking of the protruding portion 13 to the inner wall of the protective cover 4 is released, and the protective cover 4 can be smoothly removed from the body 1 (see FIG. 9).

As described above, in the video pair line type branching / distributing device according to the above-described embodiment, the P plate block 2 on which the attenuation circuit is mounted is fixedly attached to the body 1 instead of the inside of the protective cover 4. Therefore, there is no need to connect the body 1 side and the protective cover 4 side with lead wires or the like, and the workability is significantly improved as compared with the conventional one. Further, since the P-plate block 2 on which the damping circuit is mounted is provided on the body 1 side and the quick connection terminals 6 are arranged in a row on the P-plate block 2, the connection can be performed with one touch, so that the connection work can be performed. It can be done efficiently. Furthermore, by selecting the use of the electric wire insertion hole or the groove for distributing the electric wire, it is possible not only to enable the efficient connection to the quick connection terminal 6 irrespective of whether the wiring is the exposed wiring but also the buried wiring, There is an effect that the usability is dramatically improved, for example, it can be applied regardless of whether there are two lines or four lines depending on whether the fragile portion of the protective cover is punched or not. In addition, since the attachment and detachment of the body 1 and the protective cover 4 can be performed with one touch, there is an effect that the workability as a whole and the inspection work after the work can be smoothly performed.

As described above, according to the first aspect of the present invention, the P-plate block on which the damping circuit is mounted is fixedly attached to the rear surface of the body, not to the protective cover, so that There is no need to connect the protective cover and the protective cover side with a lead wire, and there is an effect that workability is remarkably improved.

Further, since the common electric wire insertion hole is in communication with each of the body, the P plate block, and the main body back cover, in the case of the embedded wiring, the electric wire is led out from the electric wire insertion hole. Can be connected by the quick connection terminals provided on both sides in the short direction of the body, and the quick connection terminals can be connected with one touch, so that the connection workability and, consequently, the workability are remarkably improved.

According to the second aspect of the present invention, since the configuration is such that grooves are provided on both sides in the longitudinal direction of the body, wires can be provided in the grooves.

According to the third aspect of the present invention, when the groove is formed to have a downward slope in the longitudinal direction of the body, the arranged electric wires are supported without slack, so that unnecessary stress is generated. However, even if it concentrates on the electric wire, it is possible to prevent a poor connection of the electric wire.

According to the fourth aspect of the present invention, there is provided a projection for attaching the body and the protective cover by elastically locking the attaching / detaching means for the body and the protective cover to the inner surface of the protective cover; Since the detachable projection which is formed integrally with the projection and releases the engagement of the projection by pressing is provided on the body side, attachment and detachment of the body and the protective cover can be performed with one touch, There is also an effect that maintenance and inspection work can be efficiently performed not only at the time of construction but also at the time of inspection after construction.

According to the fifth aspect of the present invention, a weak portion which can be punched out by application of an external force and which can be an electric wire insertion hole is formed at the longitudinal end face of the protective cover, and the lower half of the weak portion is thin. In addition, since the upper half is formed to be thick and a kerf is provided at the boundary between them, an opening is formed in only the lower half of the fragile portion or the entire fragile portion depending on the punching state of the fragile portion. It is possible to quickly respond to the opening of two lines and the opening of four lines as needed at the construction site, and one product can be used in two ways. There is an effect that it can be enlarged.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of an image pair line type branch / distributor according to the present invention.

FIG. 2 is a perspective view of the image pair line type branching / distributing device shown in FIG. 1 when assembly is completed.

FIG. 3 is an exploded perspective view showing another embodiment of the image pair line type branching / distributing device.

FIG. 4 is an explanatory diagram showing a two-line state.

FIG. 5 is an explanatory diagram showing a four-line state.

FIG. 6 is an enlarged sectional view of a fragile portion.

FIG. 7 is a perspective view showing a state of an exposed wiring.

FIG. 8 shows a state of the embedded wiring, (A) is a perspective view thereof,
(B) is a sectional view when the wall is mounted.

FIG. 9 is an explanatory diagram showing a state where the protective cover and the body are mounted.

FIG. 10 shows a conventional video pair line splitter / distributor;
(A) is a plan view when disassembled, and (B) is a side view when assembly is completed.

[Explanation of symbols]

 Reference Signs List A image pair line type branching / distributing device 1 body 2 P plate block 3 main unit back cover 4 protective cover 5a, 5b, 5c electric wire insertion hole 6 quick connection terminal 12 electric wire distribution groove 12a groove with a downward slope 13 Projection part 14 Release piece

Continuation of the front page (72) Shozo Tanaka, Inventor 1048, Ojimon Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Works, Ltd. (56) References JP-A 4-44773 (JP, U) JP-A 62-129870 (JP) , U) Actually open sho 64-3325 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) H04N 5/00

Claims (5)

(57) [Claims] 1. A body back cover attached to a wall,
A body detachably mounted on the back cover of the main body, and a damping circuit mounted between the body and the back cover of the main body and mounted with a damping circuit integrally mounted on the back of the body.
A plate block, and a protective cover detachably attached to the body, wherein a common wire insertion hole is formed in each of the body, the P plate block, and the body back cover, and A video pair line type branching / distributing device characterized in that quick connection terminals are arranged on both sides in the short direction. 2. A body back cover attached to a wall,
A body detachably attached to the back cover of the main body, a P plate block mounted between the body and the back cover of the main body, and mounted with an attenuation circuit integrally attached to the back of the body; An image pair line type branching / distributing device, comprising: a protective cover that can be freely mounted; and a groove for distributing electric wires provided on both longitudinal sides of the body. 3. The image pair line type branching / distributing device according to claim 2, wherein the electric wire mounting groove is formed with a downward slope. 4. A protruding portion according to claim 1, wherein said attaching and detaching means for attaching and detaching said body and said protective cover includes means for elastically engaging said inner surface of said protective cover. A video pair line type branch / offset integrally formed with the projection and provided on the body side with a release projection for releasing the locking of the projection by pressing.
Distributor. 5. The protective cover according to claim 1, further comprising a weak portion that can be punched out by application of an external force to form an electric wire insertion hole at an end surface in the longitudinal direction of the protective cover. Half of the image is formed thick and a kerf is formed at the boundary between them.
Distributor.