JPH0531164U - Coaxial connector - Google Patents

Abstract

(57) [Summary] [Object] The present invention reduces the number of parts while maintaining the same deformation prevention function and contact force as the conventional example against the twisting action given when the coaxial connector is inserted and removed. To facilitate the assembly work. [Structure] Earth metal fitting 6 which is a component of the coaxial connector
A plurality of projecting portions 11 are formed on the outer peripheral surface near the open end portion of the above, and the open end side of the cover portion 5 is formed by covering the projecting portions. This protects the open end of the ground metal fitting from deformation due to contact.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a coaxial connector used by being attached to the end of a coaxial cable.

[0002]

[Prior art]

 As this type of coaxial connector, the structure shown in FIG. 6 is well known as a conventional example. As is well known, the coaxial cable 1 has a central conductor 2 arranged in the central portion thereof, the outside of the central conductor 2 is covered with an insulator, and the outer conductor 3 knitted with a fine wire is arranged on the outer peripheral surface of the insulator. The outer conductor 3 is provided with a tubular outer cover.

The conventional coaxial connector 4 attached to the coaxial cable 1 having the above-described configuration includes a cover portion 5, a grounding metal piece 6, an insulator 7, a center pin 8 and an auxiliary ring 9. .

When the coaxial connector 4 is attached to the coaxial cable 1, the outer conductor 3 is completely folded back by peeling off the outer skin of the end portion of the coaxial cable 1 and then the coaxial portion 4 is coaxially attached to the cover portion 5. After inserting the cable 1, insert the insulator 7 into the grounding metal fitting 6 from the opening 6d side, attach the auxiliary ring 9 to the grounding metal fitting 6, and crimp the center conductor 2 to the center pin 8. After that, the center pin 8 is press-fitted into the insulator 7, the clamp portion 6a of the grounding metal fitting 6 is entirely brought into contact with the outer peripheral surface of the outer conductor 3, and the clamp portion 6a is swaged to be fixed. The cover portion 5 is displaced toward the end side, the stopper piece 6b of the earth metal fitting 6 and the convex portion 7a of the insulator 7 are engaged with the concave portion 5a provided on the inner peripheral surface of the cover portion 5, and the step portion 5b is grounded. The rear end 6c of the metal fitting 6 comes into contact The cover portion 5 and the grounding metal fitting 6 are stably coupled, and the auxiliary ring 9 is provided between the edge of the cover portion 5 and the outer peripheral surface of the opening 6d on the front end side where the diameter of the grounding metal fitting 6 is expanded. And suppresses the expansion of the opening 6d.

[0005]

[Problems to be solved by the device]

 In the structure of the coaxial connector 4 in the conventional example, it is unavoidable that a load such as prying is applied in addition to the insertion / removal force during the insertion / removal operation with respect to the socket portion connected to the connector, and the opening due to the load is inevitable. It is essential to assemble the auxiliary ring 9 in order to suppress the spread of the portion 6d, improve the stability at the time of insertion and removal, and maintain the contact force. However, the presence of the auxiliary ring 9 as a separate body not only increases the number of parts and leads to cost increase, but also complicates storage and management of parts, and also reduces workability in assembling the coaxial connector 4. It has issues that must be addressed.

[0006]

[Means for Solving the Problems]

 The present invention is, as a concrete means for solving the problems of the conventional example, a coaxial connector equipped with a cover portion, an earth metal fitting, an insulator and a center pin and attached to an end portion of a coaxial cable. The present invention provides a coaxial connector, characterized in that a plurality of protrusions are provided on the outer peripheral surface of the metal fitting near the opening end, and the protrusions are covered to form the opening end side of the cover portion.

[0007]

[Action]

 According to the present invention, a plurality of projecting portions are formed on the outer peripheral surface of the grounding metal fitting near the open end portion, and the open end side of the cover portion is formed by covering the projecting portions. Even if a prying action is applied during the insertion / removal operation, the projecting part and the cover part that covers the projecting part do not deform the open end of the grounding metal fitting, maintaining proper elasticity and always maintaining a proper property. The connection is made in this state.

[0008]

【Example】

 Next, the present invention will be described in detail with reference to the illustrated embodiment. For the sake of easy understanding, the same parts as those of the conventional example are designated by the same reference numerals and the details thereof will be omitted. In the first embodiment shown in FIGS. 1 to 3, the coaxial cable 1 has the central conductor 2 at the center, and the outer conductor 3 is disposed on the outer peripheral surface of the coaxial cable 1 via an insulator. , The same as the conventional example.

The coaxial connector 4 attached to the end of the coaxial cable 1 has a cover portion 5, a grounding metal piece 6, an insulator 7 and a center pin 8 as in the conventional example. The auxiliary ring 9 in the example is omitted.

That is, the convex projecting portion 11 provided in place of the auxiliary ring 9 in the conventional example is located near the opening 6d on the front end side where the diameter of the earth metal fitting 6 is expanded and on the peripheral side surface thereof. Is formed into a plurality of protruding shapes having a constant interval, and the edge 5c on the opening side of the cover portion 5 is extended so that the convex protruding portion 11 is covered inside the extended edge 5c. It is configured so that it will be in the correct position.

In the illustrated embodiment, the four convex projecting portions 11 are provided in a region where the diameter of the opening 6d is enlarged, and are provided in a row along the circumferential direction of the grounding metal fitting 6 at equal intervals. However, the present invention is not limited to this, and for example, three or five or more can be appropriately provided.

In addition, in the second embodiment shown in FIGS. 4 to 5, in place of the convex projecting portion 11, three convex projecting portions 12 having a predetermined length and a predetermined length are provided at equal intervals. Is. The length and number of the predetermined-length protruding portions 12 in this case are not limited, and two or four or more can be provided, for example.

In any of the embodiments, a plurality of projecting protrusions 11 or protrusions 12 of a predetermined length are integrally formed on the earth metal fitting 6 and the end 5c of the cover 5 on the opening side is formed. It may be formed a little longer, that is, a length that almost reaches the edge of the grounding metal fitting 6 on the side of the opening 6d.

To mount the coaxial connector 4 according to the present invention having the above-described structure on the coaxial cable 1, firstly, the coaxial cable 1 is first inserted through the cover portion 5 and then the center conductor is inserted. 2 is fitted and fitted to the center pin 8 and the insulator 7 is inserted into the ground metal fitting 6 from the side of the opening 6d. Then, the center pin 8 is press-fitted into the insulator 7 and the clamp portion 6a of the ground metal fitting 6 is inserted. The outer conductor 3 is fixed by being brought into contact with the outer peripheral surface and caulking.

After that, the cover portion 5 is displaced toward the tip end side, and the stopper piece 6b of the grounding metal fitting 6 and the convex portion 7a of the insulator 7 are crimp-engaged with the concave portion 5a provided on the inner peripheral surface of the cover portion 5, The step portion 5b of the cover portion 5 and the rear end portion 6c of the earth metal fitting 6 come into contact with each other, and the cover portion 5 and the earth metal fitting 6 are integrally coupled in a stable state.

In this mounting or assembling work, it is only necessary to crimp the clamp part 6a of the grounding metal fitting 6 and shift the cover part 5 to the tip end side, so that an extra component such as an auxiliary ring as in the conventional example is mounted. Since no work is required, workability is improved and the number of parts is reduced, which facilitates parts management.

When the coaxial connector 4 attached to the coaxial cable 1 is used, for example, when it is inserted into or removed from a socket or the like, even if a prying action is given, it does not become Due to the contact with the end 5c of the cover 5 that covers this, the end of the grounding metal 6 on the side of the opening 6d is not deformed, and the predetermined elasticity is always maintained in a proper state. It is possible to prevent the retention force from being reduced due to repetition.

[0018]

[Effect of the device]

 As described above, in the coaxial connector according to the present invention, a plurality of protrusions are formed on the outer peripheral surface near the opening end of the earth fitting which is a component of the coaxial connector, and the protrusion is covered to cover the cover portion. By forming the structure with the open end side, the covering section covers the protruding section against the prying action given at the time of insertion / removal without using the auxiliary ring that has been used conventionally. It protects by pressing it from the outside, maintains the proper elasticity without deforming the open end of the grounding metal, and always connects in the correct state, it is possible to reduce the number of parts and manage parts easily At the same time, the assembling work is significantly facilitated, which has the excellent effect of reducing costs.

[Brief description of drawings]

FIG. 1 is a cross-sectional side view of a coaxial connector according to a first embodiment of the present invention.

FIG. 2 is a side view of an earth metal fitting used in the coaxial connector of the first embodiment according to the present invention.

FIG. 3 is a schematic front view of a grounding fitting used in the coaxial connector of the first embodiment according to the present invention.

FIG. 4 is a side view of a grounding fitting used in the coaxial connector of the second embodiment according to the present invention.

FIG. 5 is a schematic front view of a grounding fitting used in the coaxial connector of the second embodiment according to the present invention.

FIG. 6 is a side view showing a cross section of a conventional coaxial connector.

[Explanation of symbols]

 1 coaxial cable 2 center conductor 3 outer conductor 4 coaxial connector 5 cover 5a recess 5b step 5c extended opening side end 6 grounding metal fitting 6a clamp 6b stopper piece 6c rear end 6d opening 7 insulator 8 center pin 11 Convex projecting part 12 Projecting part with predetermined length

Claims (1)

[Scope of utility model registration request] 1. A coaxial connector equipped with a cover part, a grounding metal, an insulator and a center pin and attached to an end of a coaxial cable, wherein a plurality of protrusions are provided on an outer peripheral surface near the open end of the grounding metal. A coaxial connector, wherein a portion is provided, and the opening end side of the cover portion is formed so as to cover the protruding portion.