JPS598312Y2 - Contact terminals for coaxial plugs - Google Patents

Description

[Detailed description of the invention] The present invention is a coaxial plug used for relaying when a non-standard plug is inserted into the plug socket of a light electrical device, etc. This invention relates to improvements in the means for assembling contact terminals.

An object of the present invention is to make it possible to easily assemble a contact terminal, and to ensure that the assembled portion can be held securely.

To explain the embodiment in detail based on the drawings, 1 is the main body of a coaxial plug A assembled into a multi-pole structure, and in this embodiment, the leading chip 2 and the sleeve 3 on the front half side are used as terminals for the inner poles. In addition, the sleeve 4 on the rear half side is configured as a three-pole terminal as an outer terminal for grounding, etc.

The leading chip 2 and the sleeve 3 on the front half side, which serve as the inner electrode terminals, each have a rod-shaped terminal portion 20. 30
are connected, and their rear ends are passed through the inside of the sleeve 4 on the rear half side, which will serve as the terminal for the outer pole, and extended sequentially to the rear (to the right in Fig. 2) so that the terminal part 20 in the center part is the longest. Seshime,
It is constructed as an embedded type in which a resin material serving as an insulating material is injected between them and the whole is covered with resin, and is assembled into three poles having a concentric cross section with the terminal portion 20 at the center.

Reference numerals 5 and 5 indicate engagement grooves provided in the covering portion 6, which is the rear core.

The engaging grooves 5, 5 are formed in the covering part 6 so that the peripheral surfaces of the terminal part 20 of the chip 2 and the terminal part 30 of the sleeve 3 are exposed, respectively.
On the other hand, it is shaped like a groove along the circumferential direction with a desired width from the top and bottom directions.

7, 7 are contact terminals assembled into the engagement grooves 5, 5.

The contact terminals 7, 7 have a connecting portion 70 that comes into contact with and connects to the tip and sleeve of a separately constructed plug B, and a proximal end portion on the opposite side of the connecting portion 70, in a part of the circumferential direction. It consists of a cylindrical supporting body 72 having a cleavage-shaped opening 71 along the axial direction. ．． 3
The connecting portion 70 has a diameter slightly reduced from the diameter of 0 to obtain a spring action that expands and contracts to fit tightly in the fitted state.
It has a continuous oval shape.

Further, the width L is set to be the same as the width of the engaging grooves 5, 5.

A metal body 8 surrounds the contact terminals 7, 7 that are engaged with the engagement grooves 5, 5.

The metal body 8 has a fitting opening 80 on its front end side that fits into the rear fitting part 40 of the sleeve 4 which becomes a multi-pole terminal.
It is shaped like this.

Further, the rear end side is provided as a plug insertion port 81 for another plug B, and in this embodiment, the insertion port 81 is formed separately from the same material as the metal body 8. By forcibly inserting the collar into the collar, the front end surface 81a of the collar also serves to prevent the insulating collar 9 inserted into the inner cavity of the metal body 8 from coming off.

Next, to explain the operation, in order to attach the separately shaped contact terminals 7, 7 to the respective engagement grooves 5, 5 of the coaxial plug A assembled for three poles, the contact terminals 7, 7 are attached. opening 7
1 is made to correspond to the engagement grooves 5, 5 as shown in FIG. 2, and is attached by forcing the opening 71 into the engagement grooves 5, 5 and pushing it in fully while expanding the cleavage-shaped opening 71.

Next, the insulating collar 9 is attached to the connection part 70 . of the contact terminals 7 , 7 .
After fully inserting the metal body 8 from the 70 side, insert the metal body 8 into the rear fitting portion 4 of the sleeve 4 with its opening 80 at the beginning.
0, its movement in the axial direction is regulated by the engagement grooves 5, 5, and its movement in the direction orthogonal to the axial direction is regulated by the metal body 8. It is used by assembling it into a plug.

As described above, according to this invention, the terminal portion 20 . 30 is shaped like a shaft and extends rearward, and its outer periphery is coated or molded concentrically with resin, and the resin coating portion 6 is provided with engagement grooves 5 along the circumferential direction.
5 is formed at a depth such that the circumferential surface of the rod-shaped terminal portion 20.30 is exposed by the groove width of the engagement grooves 5, 5, and the base end portion of the contact terminal 7 is formed separately. into a cylindrical winding body 72 having a cleavage-shaped opening 71 along the axial direction in a part of the circumferential direction, or
The clamping body 72 is inserted along the aforementioned engagement grooves 5, 5 from the split-shaped clamping opening 71 side, and the terminal portion 20. 30
Since the contact terminals 7, 7 are fitted onto the outer periphery of the support body 72, 72 and the axial ends of the supporting body 72, 72 are held on the walls of the retaining grooves 5, 5, the contact terminals 7, 7 can be attached to the shaft. Rod-shaped terminal portion 20. contact terminal 7 for 30,
The installation work in step 7 can be done easily.

Moreover, since it is held by the cylindrical support member 72, its holding surface becomes a support by wide surface contact to ensure secure holding.

[Brief explanation of drawings]

Figure 1 is a partially cutaway side view of a plug implementing this invention.
FIG. 2 is an exploded perspective view of the same, FIG. 3 is a cutaway side view of the contact terminal, FIG. 4 is a front view of the same, and FIG. 5 is a plan view of the same. Explanation of drawing symbols A...Plug, 1...
・Main part, 2... Chip, 3, 4...
Sleeve, 5... Engagement groove, 6... Covering portion, 7... Contact terminal, 8... Metal body, 9... ...Insulation color, 70...
Connection portion of contact terminal, 71... Opening of clamping body, 7
2... Clamping body.

Claims (1)

[Scope of utility model registration request] The terminal portion of the inner pole formed at the rear end of the main body of the coaxial plug is shaped into a rod shape and extends rearward, and the outer periphery of the inner pole is coated or molded in a concentric circle with resin. In the covering part,
An engagement groove extending in the circumferential direction is formed at a depth such that the circumferential surface of the rod-shaped terminal portion is exposed at the bottom of the engagement groove, and the base end portion of the contact terminal formed separately is formed. The support body is formed into a cylindrical supporting body having a split-shaped opening along the axial direction in a part of the circumferential direction, and the supporting body is fitted along the above-mentioned engagement groove from the split-shaped opening side. A contact terminal for coaxial plugs, characterized in that the contact terminal is attached by fitting onto the outer periphery of the terminal portion and holding both axial ends of the supporting body on the wall surface of an engagement groove.