JPH0340707A - Cable securing structure - Google Patents

Abstract

PURPOSE:To reduce transmission loss by fitting optical cables in the holes of a plurality of conductive securing members inserted through the inserting sections of a plurality of cable lead-in ports formed in the bottom board of housing and stopped thereto, then choking the inserting sections with shielding boards. CONSTITUTION:A plurality of cable lead-in ports 11 are formed in parallel through the bottom board 1a of housing 1. The cable lead-in port 11 comprises a wide cable inserting section 11b and a stop portion 11a on the side wall. A plurality (three in the figure) of a plurality of conductive securing members 14 having engaging grooves 14b are inserted through the inserting section 11b and engaged with the stop portion 11a. An optical cable 13 is inserted into the hole 14a of the securing member 14 and a plurality of connectors 13-2 for a plurality of strands 13-1 are connected with the connector 5-1 of a printed board 5. The inserting section 11b is choked with a shielding board 12 after the securing board 14 is inserted. By such arrangement, a small securing structure having low transmission loss can be realized.

Description

[Detailed Description of the Invention] [Summary] This invention relates to a cable fixing structure that is widely used for connecting various electronic devices, and which allows easy connection of the cable to a unit inside the device and reduces loss of transmitted signals. A cable, a conductive fixing member that is fixed to the cable and has an engagement groove formed therein, and the cable to which the fixing member is fixed are inserted. Insertion part.

and a locking portion that is engaged with the engagement groove, and a shield plate having a size that can close the cable introduction port.

[Industrial application field]

The present invention relates to a cable fixing structure widely used for connecting various electronic devices.

Recently, as the speed of information transmission increases, large computers and other devices are increasingly being connected using multiple optical cables with high transmission capacity. is provided, and the optical cable to be connected is inserted through the cable inlet and connected to the unit by the core wire exposed from the vicinity, so fix the tip of the coated part of the optical cable to the cable inlet of the frame. I'm doing it. Therefore, there is a need for a new cable fixing structure that minimizes the space for fixing the cable inserted through the cable inlet and allows easy connection of the cable.

[Prior Art] As shown in FIG. 6, the cable fixing structure that has been widely used in the past is made of a thin metal plate and is large enough to be attached to the cable inlet 1-1 provided on the bottom plate 1a of the device housing 1. Shape it into a cube with one side open, and attach it to the side wall opposite to the open side. j! A main body 2-1 provided with holes for disposing several relay terminals 2-3 and tightening the clamp member 4.
and a thin metal plate N2-2 that closes the open side of the shield box 2, and its main body 2-
A shield box 2 with a lid 2-2 fastened to the cable introduction port 1-1 is mounted above the cable introduction port 1-1.

Then, the optical cable 3 inserted from the cable inlet 1-1 is fixed to the side wall of the seal top 2 with the clamp member 4, and the respective strands 3-1 are connected to the middle m ffA element 2-3 to prevent interference. Prevents radio wave leakage,
A relay cable 6 is used to connect the relay terminal 2-3 to a connector 5-1 of, for example, a printed board 5 mounted on the upper part of the device.

[Problem to be solved by the invention]

The problem with the conventional cable fixing structure described above is that a cubic shield box with an open bottom is mounted inside the cable entry port, which increases the space it occupies. Since the optical cable and the printed circuit board attached to the housing are connected via relay terminals arranged on the side wall of the shield box, transmission loss of optical signals occurs.

In addition, relay terminals and relay cables are used to connect the optical cable and the printed circuit board, and many screws are required to fix the clamp member and shield box, which requires a lot of man-hours to connect. The problem is that costs are rising.

In view of the above-mentioned problems, the present invention provides a new cable fixing structure that facilitates the connection between a unit inside a device and an optical cable, reduces the loss of transmitted signals, and reduces the fixing space. For the purpose of providing.

[Means to solve problems]

In the present invention, as shown in FIG.
As shown in FIG.
As shown in FIG. An insertion part 1 through which the fixing member 14 holding the optical cable 13 is inserted.
1b and a cable inlet 11 that is integrated with a locking part 11a that locks the engagement groove 14b is bored in the bottom plate 1a, and the size is such that the insertion part 11b of the cable inlet 11 can be closed. The shield plate 12 has electrical conductivity.

[For production]

In the present invention, the optical cable 13 is inserted into the hole 14a of the fixing member 14.
When the fixing member 14 is press-fitted, the optical cable 13 is
In this state, as shown in FIG. 1, insert the fixing member 14 from the insertion part 11b of the cable introduction port 11, push the engagement groove 14b into the locking part 11a, and then insert it. By attaching the shield plate 12 to the portion 11b, the cable inlet 11 is connected to the conductive fixing member 14.
The optical cable 13 is easily fixed while being shielded by the shield plate 12. In addition, the connection between the printed circuit board 5 inside the device and the bare wire 13-1 of the optical cable 13 is facilitated, signal transmission loss due to relay terminals, etc. is eliminated, and a large shield box is not required, so a large number of wires can be connected. There is no need for a stopper, and the connection space can be reduced.

(Embodiment) The present invention will be described in detail below with reference to FIGS. 1 to 5.

FIG. 1 is a perspective view showing the cable fixing structure according to the present embodiment, FIG. 2 is a plan view showing the cable introduction port according to the present embodiment, FIG. 3 is a diagram showing the optical cable according to the present embodiment, and FIG. FIG. 5 shows a perspective view of the fixing member of the second embodiment. In the figure, the same parts as in Figure 6 are given the same symbols, and 11 is the introduction of the optical cable that connects the devices. 12 is the shield plate that prevents the leakage of jamming waves from the cable inlet. , 13 is an optical cable that connects the devices, and 14.24 is a fixing member that holds the optical cable and fixes it to the cable introduction port.

As shown in FIG. 2, the cable introduction port 11 has a locking portion 11a having a width "D"" that is a certain dimension larger than the outer diameter of the optical cable and a length that allows for the insertion of a plurality of optical cables, for example, three optical cables.
and the square insertion portion 11b larger than 11D I+.
As shown in FIG.
They are arranged parallel to a.

As shown in FIG. 1, the shield plate 12 is formed from a conductive thin metal plate, for example, into a rectangular shape large enough to close the insertion portion 11b of the cable introduction port 11.

The optical cable 13 includes a plurality of strands 1 as shown in FIG.
A certain length of the sheath housing 3-1 is peeled off to expose the bare wire 13-1, which has a diameter of several wires, so that it can be connected from the cable introduction port 11 to the connector 5-1 of pudding 0-5. A connector 13-2 that connects to the connector 5-1 of the printed board 5 is attached to the tip of each strand 13-1, and a clamp part 13a is formed at the edge of the sheath to form a large diameter part to ensure secure holding. It is set up.

As shown in FIG. 4, the fixing member 14 is made of a synthetic resin thick plate having conductivity and elasticity, and is attached to the insertion portion 1 of the cable introduction port 11.
1b, and a stepped hole 14a is bored in the center with a size to tighten the outer diameter of the optical cable 13 and the clamp part 13a, and the cable is introduced into the middle part of the plate thickness on the side. The locking portion 11a of the cable introduction port 11 has a width slightly larger than the thickness of the bottom plate 1a provided with the port 11, and has a bottom diameter.
The engaging groove 14b is formed so as to have a diameter of °°D1°, which is large enough to fit and engage with "D".

In addition, as shown in FIG. 5, the hole 24-1a is square and has a size that can be inserted into the insertion part 11b of the cable introduction port 11, and a hole 24-1a in the center into which the optical cable 13 is inserted and tightened, and a side retaining groove 2.
4-1b is formed in the same manner as the fixing member 14, and a narrow slit 24- is formed in a conductive and elastic synthetic resin block having a cylindrical protrusion 24-1c on one end surface.
A second fixing member 24 having a diameter of 1 d reaching the hole 24-1a from one side may be used.

The cable fixing structure using the above-mentioned member is constructed by press-fitting the clamp part 13a of the optical cable 13 shown in FIG. 3 into the hole 14a of the fixing member 14 as shown in FIG. The clamp portion 13a of the optical cable 13 grips it. Furthermore, the fixing member 2 shown in FIG.
4, the clamp portion 13a of the optical cable 13 is inserted into the hole 2.
4-13, and tighten the protrusion 2 with the tightening fitting 24-2.
By tightening 4-1c, the optical cable 13 can be grasped.

In this state, as shown in FIG. 1, the engaging groove 14b of the fixing member 14 is pushed into the locking part 11a from the insertion part 11b of the cable introduction port 11, and the shield plate 12 is inserted into the insertion part 11b of the cable introduction port 11. Optical cable 1
3 is fixed to the bottom plate 1a, and the cable inlet 1
It is configured to block interference radio wave leakage from 1.

Then, the fixed optical cable 13 element 'fLIA13-
1 upright and connect the connector 13-2 at the tip,
It is connected to a connector 13t of a printed board 5 attached to the upper part of the device.

〔Effect of the invention〕

As is clear from the above description, the present invention has an extremely simple configuration, and has advantages such as easy connection to an optical cable, reduced transmission signal loss, and reduction in connection space. Therefore, it is possible to provide a cable fixing structure that can be expected to be significantly economical and to improve reliability.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing a cable fixing structure according to an embodiment of the present invention, FIG. 2 is a plan view showing a cable introduction port according to this embodiment, FIG. 3 is a diagram showing an optical cable according to this embodiment, and FIG. FIG. 5 is a perspective view showing the fixing member of the second embodiment. FIG. 6 is a perspective view showing a conventional cable fixing structure. In the figure, 1 is a housing, 1a is a bottom plate, 5 is a printed board, 5-1.13-2 is a connector, 11 is a cable inlet, 11a is a locking part, 11b is an insertion part, 12 is a shield plate, 13 13a is an optical cable, 13a is a clamp portion, 14.24 is a fixing member, t4a and 24-1a are holes, 24-1 is a main body, 24-1d is a slit, and 24-2 is a tightening metal fitting. 13-1 is a wire, 14b and 24-1b are engagement grooves, 24-1c is a protrusion, ;
Cheek 12 No. 1 Figure Nedenogo 5 swords ηj-7 = le, guide, entrance sobu T乎l amount is revised No. 2 of>
Te; 2r stupid figure 3 IQ+ tbn Auge je example fIl! Figure 4: Oniipu (e.g., 81 ne T slant feather υ 2 conventional ♂γ-), and the needle that makes the food pass through the needle Fig. 6

Claims (1)

[Claims] A cable (13), a fixing member (14) made of a conductive material that is fixed to the cable (13) and formed with an engagement groove (14b), and the fixing member (14) is fixed to the cable (13). A cable inlet (11
), and a shield plate (12) large enough to close the cable inlet (11).