JP4053894B2 - Coaxial cable plug mounting structure - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a coaxial cable plug mounting structure.
[0002]
[Prior art]
As a conventional coaxial cable plug mounting structure, one described in Patent Document 1 is known. This is because the coaxial cable plug is provided with a flange part to be joined to the terminal panel, a caulking piece to be inserted into the mounting hole is protruded from the flange part, and the caulking piece is caulked to the terminal panel to connect the coaxial cable plug in the axial direction. It is fastened to prevent it from coming off, and the coaxial cable plug is prevented from rotating about the axis with respect to the terminal panel by the engagement of the engaging portion of the flange portion and the engaging portion of the terminal panel.
[0003]
[Patent Document 1]
Japanese Patent Laid-Open No. 2002-216917
[Problems to be solved by the invention]
However, since the conventional coaxial cable plug is formed of a low-toughness conductive material such as die casting, there is a problem that the caulking piece formed integrally with the flange portion is easily broken during caulking, and the caulking strength is weakened. . Further, in the second embodiment described in paragraph 0014 of Patent Document 1, the pair of locking protrusions that pass through the engaging holes of the flange portion and stop rotating are simply bent and raised from the terminal panel as elongated bars. However, the coaxial cable plug is liable to be loosened in the rotational direction because it tends to collapse due to an external force applied from the side.
[0005]
In view of these problems, an object of the present invention is to improve the caulking strength and make it difficult to loosen in the rotation direction in the caulking coaxial cable plug mounting structure.
[0006]
[Means for Solving the Problems]
In order to solve the above problems, the coaxial cable plug mounting structure according to the first aspect of the present invention has a coaxial cable plug mounting hole formed in the terminal panel, and an arc-shaped caulking piece projects around the mounting hole. Provide a flange part to be inserted into the mounting hole at the base end of the coaxial cable plug, and insert the base part of the coaxial cable plug in a state where the base end of the coaxial cable plug protrudes from the mounting hole. Extending the insertion stop portion to be stopped, caulking the flange portion and crimping the coaxial cable plug to the terminal panel in the axial direction, and by contacting the insertion stop portion and the caulking piece, The coaxial cable plug is configured to be prevented from rotating about the axis with respect to the terminal panel.
[0007]
The coaxial cable plug mounting structure according to the second aspect of the present invention is a position in which a pair of caulking pieces are provided at axially symmetrical positions of the mounting holes, and an angle between the ends of the caulking pieces and the center of the mounting hole is approximately 90 °. It is prescribed and configured.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings. In addition, the same code | symbol is attached | subjected to the same or similar component in each figure. As shown in FIGS. 1A to 1D, the coaxial cable connector 10 has a coaxial structure in which an insulator 21 is disposed between a cylindrical coaxial cable connection portion 12 that is an outer conductor and a central conductor 22. A disk-like flange portion 16 to be inserted into the mounting hole 3 of the terminal panel 2 at the base end of the coaxial cable connection portion 12, and the flange portion 16 abuts the terminal panel 2 and the coaxial cable plug 10 An insertion stop portion 11 that extends and stops with the base end positioned from the mounting hole 3 is extended. Moreover, the coaxial cable connection part 12, the flange part 16, and the insertion stop part 11 are integrally molded using, for example, zinc die casting. A screw thread to which an F-type coaxial cable connector (not shown) is connected is engraved around the tube of the coaxial cable connection portion 12.
[0009]
For example, a steel plate is used as the material of the terminal panel 2, and a circular attachment hole 3 into which the flange portion 16 of the coaxial cable plug 10 is inserted is formed. The hole diameter of the mounting hole 3 is substantially equal to the circular diameter of the flange portion 16. Around the mounting hole 3, a pair of caulking pieces 15 each having an arc-shaped band shape are provided so as to protrude in an axially symmetric position along the end side. Both ends of the caulking piece 15 are defined at positions where an angle θ1 formed with respect to the center of the mounting hole 3 is approximately 90 °. The band length of the caulking piece 15 is formed to be approximately a quarter of the entire circumferential length of the mounting hole 3 by the position defining angle θ1.
[0010]
On the other hand, in the flange portion 16, a pair of insertion stop portions 11 for inserting and stopping the coaxial cable plug 10 are extended in the radial direction at axially symmetric positions. Both end portions of each insertion stopper 11 are defined at positions where an angle θ2 formed with respect to the hole center is approximately 90 °. The arc length of the flange portion 16 for caulking the caulking piece 15 is equal to the band length of the caulking piece 15 and the both end portions of the insertion stopper portion 11 are in contact with both end portions of the caulking piece 15 by the position defining angle θ2. It is formed to touch. Further, the caulking piece 15 is formed such that when the caulking piece 15 is caulked to the flange portion 16, a bent portion bent from the outside to the center side has an equal width along the arc. That is, the caulking piece 15 takes into account the surplus portion of the piece due to the narrowing down to the center side so that the band height of the central part is slightly lower than both end parts, and both end parts are hypotenuses. The meat is formed in advance.
[0011]
In the coaxial cable plug mounting structure having the above-described configuration, the caulking piece 15 of the terminal panel 2 and the flange portion 16 are provided at the base end of the coaxial cable connection portion 12 in the mounting hole 3 of the terminal panel 2. The flange portion 16 is inserted, the seat surface of the insertion stop portion 11 is brought into contact with the terminal panel 2, and insertion is stopped in a state where the proximal end of the coaxial cable plug 10 is positioned from the mounting hole 3. Then, the caulking piece 15 is caulked to the flange portion 16, the inner surface of the caulking piece 15 is brought into close contact with the surface of the flange portion 16, and the coaxial cable plug 10 is fastened to the terminal panel 2 in the axial direction to prevent the caulking piece 15 from coming off. At the same time, both ends of the caulking piece 15 and both ends of the insertion stopper 11 are brought into contact with each other, and the coaxial cable plug 10 is prevented from rotating about the axis with respect to the terminal panel 2.
[0012]
According to this configuration, the crimping pieces 15, since the projecting around the mounting hole 3 of the terminal panel 2, either by closing piece 15 by a simple effort of just caulking, installing the coaxial cable connection closure 10 to the terminal panel 2 be able to. Further, since the caulking piece 15 is formed in the shape of a circular arc band, it is difficult to fall down with respect to rotational torque due to a connector mounting tool or other external force applied from the side, torque resistance can be improved, and the coaxial cable plug 10 can be improved. Can be prevented from loosening. Therefore, a strong caulking state can be maintained for a long time. Further, when the caulking piece 15 is formed of the same material as the terminal panel 2, for example, if a steel plate is used as the material of the terminal panel 2, the material properties such as rigidity and toughness of the steel plate can be utilized for the caulking piece 15. The caulking strength of the manufactured coaxial cable plug 10 can be improved.
[0013]
Further, since both ends of the caulking piece 15 are caulked so as to come into contact with both ends of the insertion stopper 11, the anti-rotation strength of the coaxial cable plug 10, that is, the torque resistance against the rotational force in both the forward and reverse directions can be improved. . Further, in the state where the caulking piece 15 is caulked to the flange portion 16, the caulking piece 15 is formed in advance to have a required hollow shape so that the bent portion of the caulking piece 15 is folded from the outside to the center side. Therefore, the caulking force of the caulking piece 15 can be evenly applied to the flange portion 16.
[0014]
In addition, since both ends of the caulking piece 15 are defined at positions where the angle formed with respect to the center of the hole is approximately 90 °, it is possible to obtain the optimum caulking strength and at the same time secure the required contact area of the caulking portion, The grounding characteristics of the coaxial cable connecting portion 12 as a conductor can be improved.
[0015]
FIG. 2 shows another embodiment of the present invention. In the embodiment of FIG. 2, four arc-shaped caulking pieces 15a are projected at equal intervals around the circular mounting hole 3, and four insertion stoppers 11a that come into contact with both ends of the caulking pieces 15a are provided on the flange portion 16a. The present invention is constituted by extending and caulking each caulking piece 15a to the flange portion 16a. According to this configuration, the contact area of the caulking portion of the caulking piece 15a caulking to the flange portion 16a can be increased, and the caulking strength can be further improved. In addition, the other structure of this embodiment, an effect | action, and an effect are the same as that of embodiment of FIG.
[0016]
FIG. 3 shows another embodiment of the present invention. In the embodiment of FIG. 3, a pair of arc-shaped caulking pieces 15b formed with the same curvature as that of the mounting hole 3a are provided at the major axis position where the curvature radius of the elliptical mounting hole 3a is small, and the caulking pieces are caulked to the flange part 16b. The present invention is constituted by extending two insertion stoppers 11b that come into contact with both ends of 15b and caulking each caulking piece 15b to the flange 16b. According to this configuration, since the mounting hole 3a is formed in an elliptical shape and the caulking piece 15b is formed in an arc belt shape, torque resistance can be further improved. In addition, the other structure of this embodiment, an effect | action, and an effect are the same as that of embodiment of FIG.
[0017]
The present invention is not limited to the above-described embodiment, and can be implemented by appropriately changing the shape and configuration of each part without departing from the spirit of the present invention, as exemplified below. .
(1) The mounting hole is not limited to a circle, an ellipse, and a square, and is formed by other polygons such as an oval and a triangle.
(2) Not only two or four caulking pieces project around the mounting hole, but also three, five, etc., and a plurality of projections, etc., are inserted into the flanges so as to abut both ends of the caulking pieces. Extend the part.
(3) The both end portions of the crimping piece are not only defined at positions where the position defining angle θ1 is approximately 90 °, but are also defined at positions where other angles such as approximately 30 °, approximately 45 °, approximately 60 °, etc. thing.
(4) The position defining angle θ1 at both ends of the crimping piece may be smaller than the position defining angle θ2 at both ends of the insertion stopper.
[0018]
【The invention's effect】
As described above in detail, according to the first aspect of the present invention, the attachment hole for the coaxial cable plug is formed in the terminal panel, and the arc-shaped caulking piece protrudes around the attachment hole. A coaxial cable plug can be attached to the terminal panel with a simple effort of caulking.
[0019]
In addition, since the caulking piece is formed in the shape of a circular arc band and protrudes around the mounting hole, the caulking piece can be prevented from falling against rotational torque or other external force applied from the side, and torque resistance can be improved and coaxial. Loose cable plugs can be prevented.
[0020]
According to the invention of claim 2, it is possible to obtain an optimum caulking strength and to secure a required amount of the contact area of the caulking portion, and to improve the grounding characteristics of the coaxial cable connecting portion as the outer conductor.
[Brief description of the drawings]
1A and 1B show an embodiment of the present invention, in which FIG. 1A is a mounting explanatory view showing a mounting state of a coaxial cable plug and a terminal panel, FIG. 1B is a cross-sectional view taken along line AA in FIG. c) is a sectional view taken along line B-B, and (d) is a view taken in the direction of the arrow C.
FIG. 2 is an explanatory view of attachment of a coaxial cable plug showing another embodiment of the present invention.
FIG. 3 is an explanatory view of attachment of a coaxial cable connector showing another embodiment of the present invention.
[Explanation of symbols]
2 ... terminal panel, 3,3 a · · mounting hole, 10 ... coaxial cable plug connector, 11, 11a, 11b ... insertion stop portion, 12 ... coaxial cable connecting portion, 15, 15a, 15b ... caulking 16, 16 a, 16 b .. flange part, 21 .. insulator, 22 .. central conductor.

Claims (2)

A coaxial cable plug mounting hole is formed in the terminal panel,
An arc belt-shaped caulking piece protrudes around the mounting hole,
Provide a flange portion to be inserted into the mounting hole at the proximal end of the coaxial cable plug,
In the flange portion, an insertion stop portion is provided that abuts against the terminal panel and stops the insertion in a state where the proximal end of the coaxial cable plug is located from the mounting hole.
A caulking piece is caulked to the flange portion, and the coaxial cable plug is fastened to the terminal panel in the axial direction.
A coaxial cable connector mounting structure, wherein the coaxial cable connector is prevented from rotating about the axis with respect to the terminal panel by abutting the insertion stopper and the crimping piece. 2. The coaxial cable plug according to claim 1, wherein a pair of caulking pieces are provided at axially symmetrical positions of the mounting hole, and the angle formed between both ends of the caulking piece with respect to the center of the mounting hole is approximately 90 °. Mounting structure.

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