JPS5841749Y2 - triplex coaxial connector - Google Patents

Description

[Detailed description of the invention] The present invention has a triple structure with an outer shell, an inner shell through each insulator, and a central contact to block radio noise such as external noise, and to block electrostatic noise. Regarding the triplex coaxial connector, which is effective for transmitting low-level signals by preventing radiated radio waves and enabling clean signal transmission,
The purpose of this is to provide a means of protection for the contact parts of the inner shell by means of an insulating collar.
To provide a highly reliable triplex coaxial connector that prevents deformation such as outward expansion of an inner shell contact part due to external conditions, and thereby always provides good electrical and mechanical connection with a plug. There is a particular thing.

For this purpose, the present invention provides a triplex coaxial connector having a center contact and an inner shell having a terminal section through an insulator, the inner and outer parts of the inner shell being fixed in the outer shell. A locking step is provided on each circumference, a contact portion is provided on the outer periphery of the front edge, and four grooves are provided in a cross shape in the axial direction of the front end. The book is notched up to the outer peripheral locking step, and the other two opposing pieces are cut out longer than that, and in the internal axial direction of this inner shell, its outer diameter is at the front end of the inner shell contact part. An insulator for inserting and fixing a center contact, which is provided with a flange having the same diameter as the outer diameter of the part with a short groove and a locking step on the outer periphery of the approximately central part. The object protrudes outward with a gap between its brim and the front end surface of the inner shell, and also has a gap between it and the inner circumferential surface of the portion from the front end to the inner circumferential locking step. It is characterized by a structure in which the locking step portion is locked to the internal shell locking step portion and press-fitted.

Hereinafter, the present invention will be explained based on the illustrated embodiments.

Figures 1 to 4 a and l) show an example of a triplex coaxial connector according to the present invention. In the figure, 1 is a cylindrical outer shell, and plugs (not shown) are provided on the upper and lower outer periphery of the front part. Projecting parts 1a and la are symmetrically protruded for bayonet connection with the rear part, and a mounting plate (not shown) for a chassis etc. having holes 1C at the four corners is provided on the outer periphery of the rearward part.
A flange portion 1b is provided for attachment to the flange portion 1b, and a locking step portion 1d is provided around the inner peripheral surface where the flange portion 1b is located.

2 has a locking step 2a provided on the outer periphery of the outer shell 1.
The leading end of the bag is locked to the locking stepped portion 1d of the protruding portion 1.
It is an insulator that is press-fitted into the outer shell 1 with its rear end located slightly rearward than the collar part 1b, and 3 is an electric wire connection of the outer shell 1. By joining the front end surface to the insulator 2 inside the side (the rear opening side of the collar 1b), and making the rear end protrude slightly outward, the opening edge of the outer shell 1 is caulked. This is an insulator that is integrally fixed with the insulator 2.

Reference numeral 4 denotes an internal shell, which is provided with a locking step 4b and a locking step 4a on the outer and inner peripheries of the front-side portion, and a contact portion 4g on the outer periphery of the front edge. In order to make the contact portion 4g come into contact with the spring in the direction,
Four dividing grooves 4C are provided in a cross shape, two of which are opposed to each other and are cut out to the outer circumferential locking step 4b, and the other two are cut out to the outer circumferential locking step portion 4b.
The book is cut out to approximately twice the length.

The inner shell 4 is also provided with a collar portion 4d on the outer periphery of its rearward portion, and a portion of this rearward portion extends integrally into a rectangular shape and has a terminal portion 4e having a hole 4f.
It becomes.

The inner shell 4 has its outer circumferential locking step 4b connected to the inner circumferential locking step 2b in front of the insulator 2, and its collar 4d connected to the inner circumferential locking step 2C behind the insulator 2. 3 to the edges of the square holes 3a of the insulator 3 so that the split groove 4C side protrudes outward from the insulator 2, and the terminal portion 4e protrudes outward from the rectangle hole 3a of the insulator 3. It is fixed in the axial direction within the insulators 2 and 3.

Reference numeral 5 denotes an insulator that is press-fitted in the axial direction inside the inner shell 4, and has a short groove 4C at the front end, the outer diameter of which is slightly smaller than the outer diameter of the inner shell contact part 4g. A slightly thick collar portion 5a having the same diameter as the insulator 5 is provided, and a locking step portion 5b is provided on the outer periphery of the approximately central portion, and this insulator 5
is the split groove 4C from the opening on the contact part 4g side of the inner shell 4.
(see Figure 4), the flange 5a protrudes outward with a slight gap a between it and the front end surface of the inner shell 4, and the front end of the inner shell 4 The locking step 5b is attached to the inner locking step 4a with a gap between the inner circumferential surface and the inner circumferential locking step 4a.
(see FIG. 1), and the contact portion of the inner shell 4 is brought into spring contact by the spring action via the groove 4C.

As described above, the portion of the inner shell 4 including the contact portion 4g is completely protected by the collar portion 5a of the insulator 5, so that even if an external load is applied in the axial direction to the inner shell contact portion, the contact portion will not be exposed to the outside. Therefore, the electrical and mechanical connection between the inner shell 4 and the plug is always ensured by spring contact.

Reference numeral 6 denotes a center contact having a split groove 6a in the axial direction at the front end and a notch 6b at the rear end. It is fixed in the direction of the center axis within the insulators 5 and 3 with the notch 6b side slightly protruding outward.

Figures 5 to 7 a, l) and c show the other side of the triplex coaxial connector according to the present invention. is formed by two divided insulators 8 and 9, and is different from the above embodiment in that the insulator 9 is caulked and fixed by the edge of the inner shell 4 excluding the terminal portion 4e. However, since the other configurations are exactly the same, their explanation will be omitted.

In addition, the proposed triple coaxial connector can also have a screw type connection structure with the plug, and is dimensionally set to be electrically and mechanically compatible with the conventional double coaxial connector. , double coaxial cables can be electrically and mechanically connected, and depending on the application, they can be used under the same conditions as conventional double coaxial connectors.

According to the present invention, in the triplex coaxial connector having the outer shell 1, the inner shell 4, and the center contact 6, the tip portion of the inner shell 4 including the contact portion 4g is completely covered by the collar portion 5a of the insulator 5. Since it is protected, even if any external load is applied in the axial direction to the contact portion of the inner shell 4, the gap between the inner shell contact portion and the insulator 5 is closed by the collar portion 5a. Therefore, there is no risk of the inner shell contacting part expanding outward due to external forces acting on the gap, and a reliable electrical and mechanical connection is always obtained through the spring contact with the plug. Therefore, it is possible to provide a triplex coaxial connector with excellent performance.

[Brief explanation of the drawing]

Fig. 1 is a half-sectional view of an example of the triplex coaxial connector according to the present invention, Fig. 2 is a top side view of the same, Fig. 3 is a plan view, Fig. 4a is a half-sectional view of the inner shell, and Fig. 4 5 is a half sectional view of the other side of the triplex coaxial connector according to the present invention, FIG. 6 is a side view of the same, and FIG. 7a is a sectional view showing how the insulation is inserted into the inner shell. FIG. 7 is a plan view showing a state in which an object is inserted and fixed, FIG. 7 is a half sectional view of the same as the above, and FIG. 7C is a sectional view showing a state in which an insulator is inserted into the inner shell. 1...Outer shell, 2...Insulator, 3
(8,9)...Insulator, 4...Inner shell, 4a...Inner peripheral locking step portion 1.4b...
...Outer circumference locking step, 4C... Division groove, 4e...
...Terminal part, 4g...Contact part, 5...
・Insulator, 5a...Brim part, 5b...
Locking step portion, 6... Center contact, a...
・Gap between the insulator brim and the tip of the inner shell, b...
...Gap between the inner shell contact area and the insulator.

Claims (1)

[Scope of utility model registration request] In a triplex coaxial connector having an inner shell and a center contact, which have a terminal section via an outer shell and an insulator, the inner shell 4 is fixed in the outer shell 1 and is locked to the outer periphery and inner periphery of the front portion of the inner shell 4. Step portion 4b and locking step portion 4
a, a contact portion 4g is provided on the outer periphery of the front edge, and four grooves 4 are provided in the axial direction of the front end portion.
C is provided in a cross shape, and two of the opposing outer peripheral locking step portions 4b are cut out, and the other two opposing steps are cut out longer than that, and the inner shell 4 is cut out in the inner axial direction. is provided with a flange portion 5a at the front end, the outer diameter of which is slightly smaller than the outer diameter of the inner shell contact portion 4g and the same diameter as the outer diameter of the portion having the short groove 4C, and at the outer periphery of the approximately central portion. The insulator 5 which inserts and secures the center contact 6 provided with the locking step portion 5b has its collar portion 5a protruding outward with a gap a between it and the front end surface of the inner shell. The locking step 5b is locked to the inner shell locking step 4a with a gap between the front end and the inner circumferential surface of the inner shell locking step 4a, and the shell is press-fitted and fixed. Triple coaxial connector.