JPH0433656Y2 - - Google Patents

Description

[Detailed description of the invention] A. Industrial application field This invention is an external conductor retaining plate that is attached to the connecting end of a coaxial cable that transmits high-frequency signals such as television signals, and is housed and fixed in a case. In contrast, the present invention relates to a coaxial cable plug in which an external conductor connecting tube is electrically connected via a connecting piece protruding from the end edge of the outer conductor connecting tube.

B. Prior art To connect the external conductor fixing plate and the external conductor connecting tube, for example, as disclosed in Japanese Utility Model Publication No. 60-1497, the fixing claw of the external conductor connecting piece is inserted into the fixing hole of the base material. The one that is bent and fixed by soldering was also developed in 1977.
Japanese Patent No. 163,684 discloses a configuration in which a coaxial cable is guided, the tip of a connecting fitting serving as an engaging member is inserted into a corresponding hole in a printed wiring board, and the coaxial cable is bent and engaged.

C. Problems to be solved by the invention In the above-mentioned prior art, both the former connection mechanism and the engagement technology disclosed in the latter involve inserting the connection part formed on the external conductor connection tube or the connection fitting into the insertion hole. However, since it is bent, caulked, and fixed with solder, it does not provide enough support after insertion, and there is a risk that the coaxial cable may fall off, resulting in incomplete contact. Also, it makes the work process complicated and difficult. Particularly, as typified by the latter, an engagement technique consisting only of a simple engagement member and a through hole provides insufficient supporting force and cannot be adopted for the connection member.

D. Means for solving the problem Therefore, the present invention is a coaxial cable plug that can connect an external conductor fixing plate and an external conductor connecting tube with one touch, and also securely supports and fixes both. The case main body 1a has a terminal block 7 consisting of a surface opposite to the coaxial cable insertion side and walls on both sides of the terminal block 7, and a tapered surface that expands outward on both side walls of the terminal block 7 at the upper end. The external conductor fixing plate 10 has a fitting window 14 cut out to match the terminal block 7, and a rising member 15 with both ends bent.
In addition, guide recesses 15a, 15a are formed by extending outwardly from the extension of the through hole 8 in the housed and fixed state, and furthermore, the outer conductor connecting tube 4 is provided with guide recesses 15a, 15a on each outer surface of the connecting piece 4a. An engaging protrusion 16 is provided that projects in a tapered shape from the distal end toward the proximal end,
Connect the fitting window 14 of the external conductor retaining plate 10 to the case body 1.
In a state where the connecting piece 4a of the external conductor connecting cylinder 4 is fitted to the outside of the terminal block 7 of
It is characterized in that it can be engaged with.

E. Effect When the connecting piece 4a of the external conductor connecting tube 4 is inserted into the through hole 8 of the case body 1a in which the external conductor fixing plate 10 is housed and fixed, and it is slid along the inner surface of the through hole 8 in a press-contact state, it is engaged. The protrusion 16 is engaged with the guide recess 15a of the external conductor fixing plate 10, and is electrically and mechanically excellent, and a reliable connection that is prevented from coming off can be made with one touch.

F. Embodiment The drawing shows an embodiment of a coaxial cable plug according to the present invention, and 1 shows a main body 1a and a lid 1b.
and are connected to each other via a hinge 1c, and these are integrally formed of polypropylene (polyethylene). Fitting locking parts 2, 2 having protrusions 2a, 2a on the outer surface are formed on both sides of the main body 1a, and notches 3, 3 corresponding to the fitting locking parts 2, 2 are formed in the lid body 1b. and recesses 3a, 3a corresponding to the protrusions 2a, 2a are formed, respectively. Furthermore, a mounting seat 5 for the external conductor connecting tube 4 made of a ring-shaped groove is formed on the back surface of the main body 1a, and a mounting seat 5 for the external conductor connecting tube 4 that is mounted is formed on the opposite surface (inside) of the mounting seat 5. Correspondingly, a terminal block 7 for arranging the center conductor connection pin 6 in a predetermined posture is provided, and a recess 7a is formed in the terminal block 7, and the center conductor connection pin 6 is disposed on the inner bottom side of the recess 7a. An insertion hole 7b is formed therein. The center conductor connection pin 6 is
An engaging protrusion 6a is formed on the side part, and a screw 6b and a nut member 6 for tightening the center conductor of the coaxial cable are formed on the flat part formed by bending the base end at a right angle.
c is provided. Further, in the main body 1a, through holes 8, 8 are provided at the base ends of both sides of the terminal block 7, through which connection pieces 4a, 4a protruding from the edge of the external conductor connection tube 4 are inserted. The upper ends of the through holes 8, 8 form a tapered surface that expands outward. In the main body 1a,
A semicircular relief part 9 for inserting the coaxial cable is cut out in the wall opposite to the hinge 1c, and a locking claw 10a protruding from an external conductor locking plate 10, which will be described later, is provided inside the relief part 9. A locking hole 11 for locking is provided. On the other hand, a relief part 9a for coaxial cable insertion corresponding to the relief part 9 is also formed in the lid body 1b, and a shield case 12 can be attached to the inner surface. The shield case 12 has cutouts 12a formed on both sides. External conductor fixing plate 1
0 is made of an iron plate with a thickness of 0.8 mm with excellent conductivity, and has an L-shaped locking claw 10a protruding from the back side of the tip, and an arc-shaped coaxial cable fixing part 13 is formed on the tip side. The fastening part 13 has a piercing body 1 facing inward.
3a, 13a... are provided. In addition, a fitting window 14 cut out to match the terminal block 7 is formed in the external conductor fixing plate 10, and both sides are bent upward, and the bent rising portion 15 is provided with a fitting window 14 that is fixed to the case 1. In this state, the portion corresponding to the extension of the through hole 8 is projected outward, thereby forming guide recesses 15a, 15a on the inner surface. These are integrally molded by press working. The external conductor connection tube 4 is made of a brass plate with a thickness of about 0.8 mm and is formed into a cylindrical shape, and has elasticity in the radial direction, and each outer surface of the connection piece 4a has a tapered shape from the tip to the base end. An engaging protrusion 16 is formed that protrudes from. The outer conductor connecting tube 4 has the punched side facing inside and has no corners on its inner edge.
A difference is provided in the width of the connecting pieces 4a, 4a.

To assemble the coaxial cable plug configured as described above, first place the external conductor fixing plate 10 at right angles to the case body with the cover 1b of the case 1 open, and Insert the L-shaped locking claw 10a into the locking hole 11, and then
The terminal block 7 is folded down to the side, and the fitting window 14 is fitted to the outside of the terminal block 7 to be housed and fixed (see FIG. 3). Next, the center conductor connecting pin 6 is attached to the terminal block 7. When the center conductor connecting pin 6 is inserted from the recess 7a of the terminal block 7 into the insertion hole 7b, the engaging protrusion 6a formed on the center conductor connecting pin 6 is inserted. is engaged with and fixed to the step between the insertion hole 7b and the recess 7a. Next, connect the connecting piece 4a of the external conductor connecting tube 4 from the back side of the main body 1a.
is inserted into the through hole 8. Then, the engagement protrusion 16 at the tip of the connecting piece 4a is pushed by the inner surface of the through hole 8, bending it slightly inward, and if it is pushed in as it is, the tip will come into contact with the tapered surface, and the tip will expand along the taper and be inserted. When the locking protrusion 16 passes the rising part, the tips of both connecting pieces 4a come into contact with the tapered surface, and this contact applies a pressing force that forces the connecting pieces 4a outward. will open slightly, and the lower end of the locking protrusion 16 will surely engage with the upper edge of the guide recess 15a, and the external conductor connecting tube 4 will be seated. At the same time, you will feel the sensation in your hand and confirm the engagement. (See Figures 4 and 5 a to d). Furthermore, due to this locking, the external conductor connecting tube 4 is prevented from shaking vertically, and the top surface of the external conductor connecting tube 4 and the bottom surface 5a of the mounting seat 5 are in close contact with each other to prevent lateral movement. Ru. In this way, the external conductor fixing plate 10, the case body 1a, and the external conductor connecting tube 4 are engaged with each other by engaging the engaging members (the guide recess 15a, the through hole 8, and the engaging protrusion 16) formed therein. Therefore, the supporting force that can be obtained is greater than that of conventional engagement techniques that simply consist of an engagement member and a through hole.

In the coaxial cable plug of this embodiment, the outer conductor connection tube 4 is formed of a relatively thick brass plate of 0.8 mm, which, together with the effects of the present invention, exhibits high steel properties. It can be put to practical use even without providing a protruding holding cylinder for externally fitting the external conductor connecting cylinder 4 on the main body, and also allows connection to the terminal T recessed in the recess.

Further, in the case 1, the main body 1a and the lid body 1b are fitted and locked, and the shield case 12 has a notch 12a formed at a portion where it comes into contact with the engagement portion between the connecting piece 4a and the guide recess 15a. At the same time, the notch 12a comes into contact with the connecting piece 4a, preventing it from shifting when it is engaged with the guide recess 15a, and making it more firmly engaged (Figs. 6 and 7).
(see figure).

In addition, the coaxial cable plug is usually connected by being inserted into the terminal T as shown in Figure 8, and in this state the coaxial cable C tends to be pulled toward the back.
The outer conductor fixing plate 10 that fixes the coaxial cable C has its tip fixed to the main body 1a, and in addition, the central part is connected to the external conductor connecting tube 4 to form the main body 1a.
Since it is securely fixed, there is no risk that the external conductor fixing plate 10 will lift up.

In the above embodiment, the connection piece 4a is connected to the terminal block 7.
The engaging protrusion 16 formed on the outer surface of the guide recess 15a is inserted between the through hole 8 that continues to the side surface of the guide recess 15a, and is engaged with the upper edge of the guide recess 15a.
The guide recess 15a may be located inside the engagement protrusion 16, and an engagement protrusion may also be provided on the inside of the connecting piece 4a, and the engagement means are not limited to the embodiments described above.

G. Effect of the invention According to the invention, the coaxial cable plug of the invention includes the external conductor retaining plate 10, the case body 1a
Since the three members of the outer conductor connecting tube 4 and the external conductor connecting tube 4 are rationally related to each other and are firmly supported and fixed, vertical wobbling is prevented, and the electrical and mechanical properties are excellent, and it is not just a simple engagement. A reliable connection that is difficult to obtain can be made with a single touch. Particularly, due to its high supporting force, the external conductor connecting tube 4 alone is sufficient for practical use, so there is no need for a holding tube for externally fitting the external conductor connecting tube 4 into the case body as in the past, and the molding process is labor-saving. Furthermore, even when the coaxial cable is connected, the outer conductor fixing plate 10 is firmly fixed, so even if the coaxial cable is easily pulled during use, the outer conductor fixing plate 10 will not come up. Various effects can be realized from the stable supporting force, such as eliminating the risk of slipping or bending, and the practical benefits are enormous.

[Brief explanation of the drawing]

The drawings show an embodiment of the coaxial cable plug according to the present invention; FIG. 1 is an exploded perspective view, FIG. 2 is an assembled perspective view, FIG. 4 is an explanatory diagram of the installation procedure of the external conductor connection tube, FIGS. 5 a to d are explanatory diagrams of the installation procedure of the external conductor connection tube, FIGS. 6 and 7 are explanatory diagrams of the engagement of the lid body and the main body, FIG. 8 is an explanatory diagram of plug insertion, and FIG. 9 is an explanatory diagram of the plug in a state in which the coaxial cable is pulled toward the back. 1...Case, 1a...Main body, 1b...Lid,
1c...Hinge, 2...Fitting locking portion, 2a...Protrusion, 3...Notch, 3a...Recess, 4...External conductor connection tube, 4a...Connection piece, 5...Mounting seat ,
5a... Bottom, 6... Center conductor connection pin, 6a...
...Engaging protrusion, 6b...Screw, 6c...Nut member, 7...Terminal block, 7a...Recess, 7b...Insertion hole, 8...Through hole, 9, 9a...Relief part, 10...
External conductor fixing plate, 10a...Latching claw, 11...Latching hole, 12...Shield case, 12a...Notch, 13...Coaxial cable fixing part, 13a...
Pierce body, 14... Fitting window, 15... Standing portion, 15a... Guide recess, 16... Engaging protrusion, T
...Terminal, C...Coaxial cable.

Claims (1)

[Scope of utility model registration request] The external conductor connecting tube 4 is electrically connected to the external conductor fixing plate 10 housed and fixed in the case body 1a at a predetermined connection position via connecting pieces 4a, 4a protruding from the edges thereof. This is a coaxial cable plug, and the case body 1a includes a terminal block 7 consisting of a surface opposite to the coaxial cable insertion side and walls on both sides thereof, and a terminal block 7 extending outward on both side walls of the terminal block 7. The external conductor fixing plate 10 has a fitting window 14 cut out to match the terminal block 7, and a rising hole with both ends bent. Guide recesses 15a, 15a are formed in the portion 15 by extending the portion corresponding to the extension of the through hole 8 to the outside in the housed and fixed state.
Furthermore, the outer conductor connection tube 4 has the connection piece 4
An engaging protrusion 16 that projects in a tapered manner from the tip to the base is provided on each outer surface of the external conductor retaining plate 1.
The connecting piece 4a of the external conductor connecting tube 4 can be engaged with the guide recess 15a in a state where the fitting window 14 of the case body 1a is fitted to the outside of the terminal block 7 of the case body 1a. Plug for coaxial cable.