CN118198773A - Coaxial connector - Google Patents

Abstract

The utility model provides a coaxial connector, includes metal casing, insulator, conductive terminal and cable, the metal casing includes a tube-shape interface, the insulator set up in the interface and be equipped with down open-ended butt joint hole, conductive terminal include vertically long dull and stereotyped portion with from the lateral both sides reason of dull and stereotyped portion is buckled downwards and is extended into the contact arm of butt joint hole, the cable is including being located its innermost heart yearn, conductive terminal includes from the flat board portion is far away from the front end of cable and is buckled support the pressure portion and from a pair of buckling arms that support the lateral both sides of pressure portion buckled, the heart yearn by support the pressure portion from top down to dull and stereotyped portion, a pair of buckling arms pass the both sides of heart yearn and paste in the lateral both sides of flat board portion, support pressure portion and a pair of buckling arms and enclose jointly and locate the heart yearn periphery can reduce because heart yearn is scattered and lead to heart yearn and metal casing overlap joint and cause the risk of short circuit.

Description

Coaxial connector

[ Field of technology ]

The present invention relates to a coaxial connector, and more particularly, to a coaxial connector with improved electrical reliability.

[ Background Art ]

In the related art, referring to chinese patent No. CN105826709B, a coaxial connector is disclosed, which includes an outer conductor shell, an insulating housing assembled to the outer conductor shell, an inner conductor contact held by the insulating housing, and a coaxial cable, wherein the inner conductor contact includes a tongue-shaped portion and a cable mounting portion, the insulating housing is provided with an insulating pressing plate capable of opening and closing, and after the core wire of the cable is mounted on the cable mounting portion, the tongue-shaped portion is pressed down to be in a substantially horizontal state by the insulating pressing plate and presses the core wire from above. At this time, the core wire is fixed by the tongue-shaped portion and the cable mounting portion in the up-down direction, but the core wire is not fixed in the lateral direction thereof, and therefore there is a risk that the core wire overlaps the outer conductor shell due to scattering of the core wire, resulting in a short circuit.

Accordingly, there is a need for an improved coaxial connector that addresses the above issues.

[ Invention ]

The main object of the present invention is to provide a coaxial connector with better electrical performance reliability.

In order to achieve the above purpose, the present invention adopts the following technical scheme: the utility model provides a coaxial connector, includes metal casing, insulator, conductive terminal and cable, the metal casing includes a tube-shape interface, the insulator set up in the interface and be equipped with downward open-ended butt joint hole, conductive terminal include the lengthwise dull and stereotyped portion with from the lateral both sides limit of dull and stereotyped portion is buckled downwards and is extended into the contact arm of butt joint hole, the cable is including being located its inlayer heart yearn, conductive terminal includes from the flat board portion is far away from the front end of cable the back press portion of buckling with from a pair of buckling arms of buckling of pressing portion in the lateral both sides of pressing portion, the heart yearn is by press portion from top down to dull and stereotyped portion, a pair of buckling arms pass the both sides of heart yearn and paste and cover in the lateral both sides of dull and stereotyped portion.

Further, the insulator is provided with a platform part, the flat plate part of the conductive terminal is arranged on the platform part, and the buckling arm is propped against the platform part downwards.

Further, the insulator comprises a body part and a pressing part connected to the body part, the body part is provided with a containing cavity penetrating up and down and containing the conductive terminal, the butt joint hole is a lower opening of the containing cavity, the pressing part is arranged on an upper opening of the containing cavity in a cantilever shape to press the pressing part downwards, and the platform part is arranged on the body part and faces to the upper opening of the containing cavity.

Further, the platform part comprises two parts which are respectively positioned at the two longitudinal ends of the accommodating cavity, and the flat plate part is simultaneously erected at the two parts of the platform part.

Further, a pair of the buckling arms are symmetrical to each other.

Further, the buckling arms are bent from two sides of the extending end of the pressing part, and the buckling arms are located behind the contact arms.

Further, the pressing part is bent upwards from the front end of the flat plate part, then bent downwards to press against the core wire, and the pair of buckling arms are suspended on two sides of the flat plate part.

Further, the metal shell comprises a cover plate connected to the upper edge of the connector and wing parts connected to two sides of the cover plate, the cover plate is bent downwards to cover the upper opening of the connector, the corresponding wing parts are bent towards each other to clamp the cable, and the bending parts of the wing parts are provided with cuts.

Further, the inner surface of the wing part is provided with a bump.

Further, the accommodating cavity is provided with an opening penetrating in the longitudinal direction, the core wire extends into the accommodating cavity from the opening, the platform part is connected with the opening, and the flat plate part extends to the opening.

Compared with the prior art, the coaxial connector forms the cavity through the panel part, the pressing part and the pair of buckling arms, the core wire can be completely arranged in the cavity in a framing mode, short circuits caused by overlapping of the core wire and the metal shell due to displacement or scattering of the core wire can be effectively avoided, and the reliability of the electrical performance of the coaxial connector is improved.

[ Description of the drawings ]

Fig. 1 is a perspective view of the coaxial connector of the present invention.

Fig. 2 is a schematic view showing a state in which a core wire of the coaxial connector of the present invention is placed on a flat plate portion of a conductive terminal.

Fig. 3 is a schematic view illustrating a state in which the pressing portion of the conductive terminal presses the core wire downward in fig. 2.

Fig. 4 is an exploded perspective view of fig. 2.

Fig. 5 is a perspective view of the other angle of fig. 4.

Fig. 6 is a perspective view of the cable and conductive terminal of fig. 3 at another angle.

Fig. 7 is a cross-sectional view taken along line A-A of fig. 1.

Fig. 8 is a sectional view taken along line B-B of fig. 1.

[ Main element symbols description ]

Coaxial connector 100 opening 240

Yielding inclined plane 25 of metal shell 1

Interface 10 conductive terminal 3

Cover plate 11 chamber 30

Wing 12 flat plate portion 31

Cutout 120 contacts arm 32

The first wing part 121 abuts against the pressing part 33

The second wing 122 engages the arm 34

Bump 123 through hole 35

Insulator 2 cable 4

Core wire 40 of butt joint hole 20

Insulating layer 41 in mesa portion 21

Body portion 22 shielding layer 42

Outer insulation layer 43 of press-fit portion 23

Housing cavity 24

The invention will be further described in the following detailed description in conjunction with the above-described figures.

[ Detailed description ] of the invention

For a better understanding of the objects, structures, features, and effects of the present invention, a specific embodiment of the coaxial connector of the present invention will now be described with reference to fig. 1-8.

Referring to fig. 1 to 6, the present invention discloses a coaxial connector 100, which comprises a metal shell 1, an insulator 2, a conductive terminal 3 and a cable 4, wherein the metal shell 1 comprises a cylindrical connector 10, the insulator 2 is disposed in the connector 10 and is provided with a butt joint hole 20 opened downwards, the conductive terminal 3 comprises a longitudinal flat plate portion 31 and contact arms 32 bent downwards from two lateral side edges of the flat plate portion 31 and extending into the butt joint hole 20, the cable 4 comprises a core wire 40 positioned at the innermost layer of the core wire, the conductive terminal 3 comprises a pressing portion 33 bent reversely from the front end of the flat plate portion 31 away from the cable and a pair of buckling arms 34 bent from two lateral sides of the pressing portion 33, the core wire 40 is pressed downwards to the flat plate portion 31 from above by the pressing portion 32, and the pair of buckling arms 33 pass through two lateral sides of the core wire 40 and are attached to two lateral sides of the flat plate portion 31. The flat plate portion 31, the pressing portion 33 and the pair of buckling arms 34 together enclose a substantially closed cavity 30 (reference numeral see fig. 6), the core wire 40 penetrates through the cavity 30 and is completely framed in the cavity 30, so that a short circuit caused by overlapping the core wire 40 with the metal shell 1 due to displacement or scattering of the core wire 40 can be effectively avoided, and the stability of the electrical performance of the coaxial connector 100 can be improved.

As shown in fig. 2,3 and 8, the insulator 2 is provided with a platform portion 21, the flat plate portion 31 of the conductive terminal 3 is disposed on the platform portion 21, the buckling arm 34 is abutted downwards to the platform portion 21, and the platform portion 21 can play a role of supporting the buckling arm 34, so that breakage of the conductive terminal 3 caused by excessive pressing of the buckling arm 34 is effectively avoided. As shown in fig. 4, the insulator 2 includes a body 22 and a pressing portion 23 connected to the body 22, the body 22 is provided with a receiving cavity 24 penetrating up and down and receiving the conductive terminal 3, the docking hole 20 is a lower opening of the receiving cavity 24, the pressing portion 23 is cantilever-shaped and disposed at an upper opening of the receiving cavity 24 to press the pressing portion 33 downward, and the platform 21 is disposed at the body 22 and faces to the upper opening of the receiving cavity 24. The metal casing 1 includes a cover plate 11 connected to the upper edge of the interface 10, before assembling, the pressing portion 23 is perpendicular to the body portion 22 and corresponds to the cover plate 11, after the core wire 40 is placed on the flat plate portion 31, the cover plate 11 is bent to drive the pressing portion 23 to be buckled to the accommodating cavity 24 so as to generate downward pressure on the core wire 40, so that assembling stability can be increased, and in a preferred embodiment, an abdication inclined plane 25 is disposed at a connection position of the body portion 22 and the pressing portion 23, so that an abdication space can be provided when the pressing portion 23 is bent. Referring to fig. 4, the platform 21 includes two portions respectively located at two longitudinal ends of the accommodating cavity 24, and the flat plate 31 is simultaneously erected on the two portions of the platform 21, so that the platform 21 provides a better supporting force to the two longitudinal ends of the flat plate 31, which is beneficial to the stress balance of the whole conductive terminal 3 when the pressing portion 33 is pressed down. The accommodating cavity 24 is provided with an opening 240 penetrating in a longitudinal direction, the core wire 40 extends into the accommodating cavity 24 from the opening, the platform portion 21 is connected with the opening 240, and the flat plate portion 31 extends to the opening 240.

As shown in fig. 2 to 4 and 7, the pair of buckling arms 34 are symmetrical to each other. The fastening arms 34 are bent from two sides of the extending end of the pressing portion 33, and after the pressing portion 33 is pressed down, the fastening arms 34 are located behind the contact arms 32. The pressing portion 33 is bent upward from the front end of the flat plate portion 31, and then is folded back and extended downward along the core wire 40, so as to press the core wire 40 downward, thereby improving the fixing effect on the core wire 40, and the pair of buckling arms 34 are suspended on two sides of the flat plate portion 31. Referring to fig. 8, the flat plate 31, the pressing portion 33, and the pair of fastening arms 34 are almost enclosed and disposed on the periphery of the core wire 40, so as to have a better positioning effect on the core wire 40, the flat plate 31 is further provided with a through hole 35 penetrating up and down, and the core wire 40 is pressed down by the pressing portion 33 and then is clamped with the through hole 35, so that the stability of assembling the core wire 40 is further increased.

The metal shell 1 further comprises wing parts 12 connected to two sides of the cover plate 11, when assembled, the cover plate 11 is bent downwards and shields the upper opening of the connector 10, the corresponding wing parts 12 are bent towards each other to clamp the cable 4, and the bending parts of the wing parts 12 are provided with notches 120. The cable 4 includes an inner insulating layer 41, a shielding layer 42 and an outer insulating layer 43 sequentially coated on the outer layer of the core wire 40, the wing portion 12 includes a first wing portion 121 tightly fastened on the outer insulating layer 43, and a second wing portion 122 tightly fastened on the shielding layer 42, so that the cover plate 11 is stably fixed on the outer side of the insulator 2 and electrically connected with the shielding layer 42, and thus the metal shell 1 can well form shielding and electrical shielding protection for the conductive terminal 3 inside. The notch 120 can not only accurately preset the bending point of the wing portion 12, but also provide a space for bending the wing portion 12. In this embodiment, the inner surfaces of the first and second wing portions 121 and 122 are respectively provided with a bump 123, and the cover 11 covers the insulating layer 43 and the shielding layer 42 and is also provided with the bumps 123, so as to increase the holding force of the metal casing 1 and the cable 4.

The foregoing is merely illustrative of the preferred embodiments of the present invention, and is not to be construed as limiting the scope of the invention. All simple and equivalent changes and modifications made in accordance with the claims and the specification of this invention shall fall within the scope of the patent covered by this invention.

Claims (10)

1. The utility model provides a coaxial connector, includes metal casing, insulator, conductive terminal and cable, the metal casing includes a cylindric interface, the insulator set up in the interface and be equipped with downward opening's butt joint hole, conductive terminal include the flat board portion of lengthwise and from the lateral both sides limit of flat board portion is buckled downwards and is extended into the contact arm of butt joint hole, the cable is including being located its innermost heart yearn, its characterized in that: the conductive terminal comprises a pressing part and a pair of buckling arms, wherein the pressing part is bent reversely from the front end of the flat plate part far away from the cable, the buckling arms are bent from the two lateral sides of the pressing part, the core wire is pressed to the flat plate part from top to bottom by the pressing part, and the pair of buckling arms penetrate through the two sides of the core wire to be attached to the two lateral sides of the flat plate part.

2. The coaxial connector of claim 1, wherein: the insulator is provided with a platform part, the flat plate part of the conductive terminal is arranged on the platform part, and the buckling arm is propped against the platform part downwards.

3. The coaxial connector of claim 2, wherein: the insulator comprises a body part and a pressing part connected with the body part, wherein the body part is provided with a containing cavity which penetrates through the body part up and down and contains the conductive terminal, the butt joint hole is a lower opening of the containing cavity, the pressing part is arranged on an upper opening of the containing cavity in a cantilever shape so as to press the pressing part downwards, and the platform part is arranged on the body part and faces to the upper opening of the containing cavity.

4. A coaxial connector as defined in claim 3, wherein: the platform part comprises two parts which are respectively positioned at the two longitudinal ends of the accommodating cavity, and the flat plate part is simultaneously erected at the two parts of the platform part.

5. The coaxial connector of any of claims 1-4, wherein: the pair of buckling arms are symmetrical to each other.

6. The coaxial connector of claim 5, wherein: the buckling arms are bent from two sides of the extending tail end of the pressing part, and the buckling arms are positioned behind the contact arms.

7. The coaxial connector of claim 5, wherein: the pressing part is bent upwards from the front end of the flat plate part, then bent downwards to press against the core wire, and the pair of buckling arms are suspended on two sides of the flat plate part.

8. A coaxial connector as defined in claim 3, wherein: the metal shell comprises a cover plate connected to the upper edge of the connector and wing parts connected to two sides of the cover plate, the cover plate is bent downwards and shields the upper opening of the connector, the corresponding wing parts are bent towards each other to clamp the cable, and the bent parts of the wing parts are provided with cuts.

9. The coaxial connector of claim 8, wherein: the inner surface of the wing part is provided with a lug.

10. A coaxial connector as defined in claim 3, wherein: the accommodating cavity is provided with an opening penetrating in the longitudinal direction, the core wire stretches into the accommodating cavity from the opening, the platform part is connected with the opening, and the platform part extends to the opening.