JPH0348637B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a connector holder that prevents a pair of connectors housed therein from coming off in the connection direction.

A pair of connectors for electrically connecting cables has a plug formed on one side and a socket on the other, and the plug is inserted into the socket to electrically connect the cables. Connected. The plug is elastically held while being inserted into the socket, thereby preventing the pair of connectors from coming off in the connection direction.

However, this method is not reliable in preventing the cable from coming off, and it easily comes off when tension is applied to the cable. For this purpose, for example, a male thread is formed on the outer periphery of one connector, and a ring with a female thread is fitted to the other connector, and the female thread of this ring is screwed together with the male thread to remove the connector. We are trying to prevent this. However, in this case, there were problems such as the connector was expensive and it took time and effort to attach and detach the connector.

A conventional example related to the present invention will be described using an extension cable connection device for a video camera.

Video tape recorder (hereinafter referred to as VTR)
When using the above-mentioned extension cable in a connection device for a camera extension cable, the purpose is to prevent the plug from separating from the socket at an intermediate connection point.

When connecting the video tape recorder main body and a VTR camera, or when photographing a place close to the video tape recorder main body, connect the video tape recorder main body (not shown) as shown in Figure 1.
Short connection lead wire 3 between VTR camera 1
However, when shooting long-distance shots, as shown in Figure 2, insert a socket 4 and a plug 5 at both ends between the VTR camera 1 and the end plug 2 of the short-distance lead wire 3. Using an extension cable 6, the plug 5 was directly connected to the VTR camera 1, while the socket 4 was connected to the plug 2 of the short-distance lead wire 3.

In this case, since the camera 1 is operated at a distance from the video tape recorder, if force is applied to the camera 1 by mistake, the plug 2, which is the intermediate connection part,
Otherwise, socket 4 may become disconnected. At this time, since the shooting location is far from the intermediate connection part,
It is difficult to detect the disconnection between plug 2 and socket 4,
A problem arises in which people think that they have taken a picture and recorded it, but it turns out that no picture was actually taken.

In order to solve the above problems, as shown in FIGS. 3 and 4, the conventional example uses a connecting case 7 made of resin, and this connecting case 7 connects the intermediate connection between the plug 2 and the socket 4. Even if the cover, lead wire 3 and extension cable 6 are pulled in opposite directions, the plug 2 and socket 4 are prevented from coming off.

As shown in FIG. 4, the connection case 7 is a half-case with a semicircular cross section, which has a recess 8 for passing the short-distance lead wire 3 through it at one end and a recess 9 for the extension cable 6 at the other end. 7a, 7b and a thin wall portion 1 that joins one end of these half cases 7a, 7b.
0 and a plurality of locking pieces 11 formed at the other end of one half case 7a and a plurality of insertion holes 12 formed at the other end of the other half case 7b. The socket 4 and the plug 2 are housed in the half cases 7a and 7b, and the half cases 7a and
7b is rotated in the direction of the arrow, and the locking piece 11 is inserted into the insertion hole 12 and locked to the other half case 7b. As a result, the plug 2 and the socket 4 are completely covered by the case 7, and only the short-distance lead wire 3 and the extension cable 6 are inserted through the holes formed by the recesses 8 and 9, respectively. Even if tension forces are applied to the extension cables 6 in opposite directions, the connection case 7 keeps the plug 2 and socket 4 connected.
will never come off. In addition, in Figure 3, 2
a and 4a are terminals for the plug 2 and socket 4, respectively.

In the conventional example described above, the purpose of preventing the connector from coming off in the connection direction has been achieved to a certain extent, but the mold structure of the connection case 7 is complicated, and the hinge part is attached to the thin part 10 that joins one end of the half cases 7a and 7b. Because of this, the materials used were limited to expensive ones. Furthermore, a dedicated connection case 7 is required for each pair of plug and socket combinations, resulting in a lack of common use. Further, since the locking piece 11 and the locking piece insertion hole 12 have a convex structure, the cable is likely to hit obstacles when moving, and the connected equipment lacks operability. Furthermore, there are many drawbacks, such as the fact that one cable cannot be temporarily attached and there is a high possibility that the case 7 will be lost.

The present invention eliminates the above-mentioned drawbacks, and provides a connector holder that is inexpensive, easy to attach and detach, has high compatibility, and can effectively prevent the connector from coming off. An example of this will be described below with reference to FIGS. 5 to 8. Portions corresponding to those in FIGS. 1 to 4 of the conventional example are designated by the same reference numerals, and their explanations will be omitted.

FIG. 5 is a perspective view of a holder of a connector according to an embodiment of the present invention, and FIG. 6 is a plan view of the holder. Two parallel cut lines 51a, 51a are provided at a plurality of locations, respectively. As a result, a plurality of fixing pieces 51
(The drawing shows three cases) are arranged and formed. The illustrated example has two fixing pieces 51 on each end side.
are placed at 120° intervals around the circumference. These can be easily formed by integral molding using a synthetic resin having hinge characteristics (for example, polypropylene or polyethylene resin). The mutual dimensions H ₀ and H ₁ of the fixed piece 51 are the socket 4 and plug 2.
Set the length to be approximately the same as the length in the connected state. If the fixing piece 51 formed by the two cut lines 51a, 51a on the same circumference is arranged with the same angle distribution as a whole, the holding strength will be increased and the attachment/detachment operation will be made easier.

Next, we will explain how to use the holder 50 of this connector in the seventh section.
This will be explained with reference to the figure and FIGS. 8A and 8B.

First, before connecting the pair of plugs 2 and sockets 4, attach the connector holder 5 to one extension cable 6.
0, then the plug 2 and the socket 4 are fitted and connected, and the retainer 50 is moved to position the plug 2 and the socket 4 in the retainer 50, as shown in FIG. By plastically deforming the fixing pieces 51 on the end faces of the plug 2 and the socket 4 inward using a fingernail or the tip of a screwdriver, it is possible to easily prevent them from coming off. FIG. 8A is a sectional view when the plug 2 and socket 4 are inserted into the holder 50, and by pressurizing the fixing pieces 51 from the three directions indicated by the arrows, plastic deformation occurs as shown in FIG. 8B. The fixed piece 51' can be made by
This fixing piece 51' serves to prevent the plug 2 and socket 4 from coming off. In addition, the fixed piece 51'
(Cylinder 50) has a hinge characteristic, and its elongated shape allows it to maintain balance while being deformed inward, so that when it detaches from this holder 50, it is able to maintain its balance only by its own elastic action. This is possible by pressing the fixing piece 51' on either side of the connector from the inside and restoring it. In the conventional example, the holder is completely separated from the cable at this time, so it could be lost due to movement, etc., but in this configuration, the problem of loss has been solved because it is temporarily attached to one of the cables. Furthermore, the outer fixing piece 5
If 1 is also plastically deformed inward, it will also have the effect of preventing cable breakage. Although not shown, perforations may be formed at the branching point of the fixed piece 51 with the cylindrical body 50 or at the center for the purpose of facilitating plastic deformation. Furthermore, the strength of preventing the fixing pieces 51 from coming off can be adjusted by appropriately setting the shape, arrangement, and number of the fixing pieces 51 in relation to the material used.

Next, other usage examples of the present invention are shown in FIGS. 9 and 10. Even when connecting a pair of connectors with plugs 2' and sockets 4' of different shapes, the fixing piece 51, which is pressurized inward and plastically deformed, is selected and used. In the conventional example, the holder was a dedicated holder, but in this configuration, it functions as a highly common holder, improving productivity. In FIGS. 9 and 10, 2a' and 4a' are terminals of the plug 2' and socket 4', respectively.

Although the fixing pieces 51 have been described in the case where they are provided in three places on the same circumference as two stages on both sides, it is also possible to provide them in a plurality of other places. Furthermore, it goes without saying that the present invention is applicable not only to connection devices for extension cables for video tape recorders and cameras, but also to various electrical devices.

As is clear from the above embodiments, a plurality of fixing pieces of the present invention are formed by integral molding with two parallel cut lines on the circumference at both ends of a cylindrical body, A connector holder that uses this fixing piece to prevent a pair of connectors housed therein from coming off in the connection direction is: (1) The mold structure is extremely simple, and the materials used are not limited, making it inexpensive. It can be used more widely, and by using it more widely, significant cost reductions can be achieved.

(2) Since the external shape is a cylindrical shape concentric with the socket or plug it holds, the cable can move smoothly, improving the operability of connected devices.

(3) If you want to separate the connecting cable after it has been attached and used, you can restore only the fixing piece on one side, so there is no need to completely separate the holder from the connecting cable, and there is no need to worry about losing it. Fear disappears.

Demonstrates characteristics such as. Furthermore, multiple fixing pieces are provided on both ends of the cylindrical body, and by selectively using these fixing pieces, it is effective in preventing disconnection in the connection direction even when connecting many connectors of different sizes. It is something. Therefore, the connector holder according to the present invention can be used more commonly, improving productivity and significantly reducing costs. Moreover, when a pair of connectors is held, almost the entire part can be covered by the holder, and since this holder can be made of synthetic resin, it has insulating properties. This improves pressure resistance and safety. When used to connect an extension cable of a video tape recorder, there will be no failure in taking pictures.

[Brief explanation of drawings]

Figure 1 shows an example of normal use of a VTR camera, and Figure 2 shows an example of using an extension cable.
Figure 3 is a cross-sectional view of a conventional VTR camera extension cable connection device in use, Figure 4 is a perspective view of a connection case used in the same device, and Figure 5 is a diagram showing an example of how a VTR camera is used. FIG. 6 is a perspective view of a connector holder according to an embodiment of the invention, FIG. 6 is a plan view of the same holder, FIG. 7 is a cross-sectional view of the connector holder according to an embodiment of the invention when in use, Figure A is a cross-sectional view of the fixed piece before plastic deformation, Figure B is a cross-sectional view of the fixed piece after plastic deformation, and Figures 9 and 10 are cross-sectional views showing other uses of the present invention. be. 2, 2'...Plug, 4, 4'...Socket, 3
...Short distance lead wire, 6...Extension cable, 5
0...Connector holder main body, 51...Fixing piece,
51a...Score line, 51'...Fixed piece after plastic deformation.

Claims (1)

[Claims] 1. A cylindrical body molded from a synthetic resin having hinge characteristics, and a plurality of fixing pieces integrally formed with two parallel cut lines on the circumference at both ends. , the fixing piece is processed to protrude inside the cylindrical body, and the fixing piece prevents the pair of connectors housed in the cylindrical body from coming off in the connecting direction. Retainer. 2. The scope of claims, wherein a plurality of fixing pieces are provided at both ends of a cylindrical body, and the fixing pieces are selectively used to prevent a pair of connectors of different sizes from coming off in the connecting direction. A holder for the connector described in paragraph 1.