CN212062909U

CN212062909U - Coaxial contact element

Info

Publication number: CN212062909U
Application number: CN202020660554.5U
Authority: CN
Inventors: 王文理; 陆文举; 邹紫怡
Original assignee: Suzhou Huayang Aerospace Electric Co Ltd
Current assignee: Suzhou Huayang Aerospace Electric Co Ltd
Priority date: 2020-04-27
Filing date: 2020-04-27
Publication date: 2020-12-01
Anticipated expiration: 2030-04-27

Abstract

The utility model provides a coaxial contact element, which comprises a floating component and a fixed component which are mutually butted, wherein an elastic element for elastic spacing abutting and a retaining ring for floating limiting are arranged between the floating component and the fixed component; the floating assembly comprises an inner conductor assembly and a first shell assembly sleeved outside the inner conductor assembly, and a first insulating medium is arranged between the inner conductor assembly and the first shell assembly; the fixed subassembly includes the switching hole closes the piece that can dock with the inner conductor closes the piece to and the cover is established the outside second shell closes the piece of switching hole closes the piece, is provided with the second insulating medium between switching hole closes the piece and the second shell closes the piece. The utility model provides a coaxial contact, contact connect install in the collection moulding piece after the cable, can realize self floating, the cable can fix motionlessly, satisfies the electrical performance requirement simultaneously, and specially adapted has waterproof sealing, and the cable needs the service environment of pencil ligature fixed processing.

Description

Coaxial contact element

Technical Field

The utility model relates to a connector technical field, concretely relates to radio frequency coaxial connector field especially relates to a coaxial contact.

Background

With the development of miniaturization, integration and high frequency of electronic components, the requirement on the integration degree is higher and higher, and higher requirements on the reliability and the sealing property of products are also provided.

The radio frequency coaxial connector is mainly used for realizing the switching and transmission of radio frequency signals and is widely applied to the fields of communication systems, microwave measurement systems, instruments and meters and the like. Radio frequency coaxial connectors typically include an outer conductor, an inner conductor, and an insulator between the inner and outer conductors that are coaxially assembled together; the function division can be divided into a distribution cable connector, a micro-strip connector, an adapter and the like according to the realized function division.

The radio frequency coaxial connector of the matching cable is mainly used for being connected with a radio frequency coaxial cable to realize signal transmission, the radio frequency coaxial cable consists of a core wire, a shielding layer and an insulating layer, the connection of the connector and the radio frequency coaxial cable is to connect the cable core wire with an inner conductor of the connector and connect the shielding layer of the cable with a shell of the connector, and the continuity of characteristic impedance is ensured during the connection so as to ensure the quality of signal transmission.

The radio frequency coaxial connector is widely applied to production, but when a cable is bent or expands with heat and contracts with cold, a core wire of the radio frequency coaxial connector often drives an inner conductor of the connector to stretch, which is a needle retracting phenomenon generally known in the industry.

The prior art improves upon the above technical problem, for example, patent application nos.: CN201210291892.6, patent name: the radio frequency coaxial connector comprises an outer conductor and an inner conductor assembled in the outer conductor, wherein an insulated hard retaining body is arranged in the outer conductor, the hard retaining body is positioned at the rear end of the inner conductor and is provided with a wire passing hole for a core wire of a corresponding coaxial cable to pass through, when the connector is connected with the corresponding coaxial cable, a shielding layer of the coaxial cable stops the hard retaining body from moving backwards in the outer conductor, and the hard retaining body props against the inner conductor and prevents the inner conductor from moving backwards in the outer conductor. Although the hard retaining body is arranged to prevent the inner conductor from moving backwards in the outer conductor in the prior art, the problem of needle retraction of the existing cable radio-frequency coaxial connector for matching is solved, the mechanical stress generated during butt joint still cannot be absorbed, and the problem of coaxial cable displacement cannot be solved.

For a radio frequency coaxial contact in an integrated module, not only needs to realize transmission of radio frequency signals, but also needs the radio frequency coaxial contact to float freely in the integrated module, so as to meet the reliable requirement of mechanical installation; meanwhile, as the sealing requirements of the integrated module are improved, the integrated module needs to be sealed; in addition, for long integrated cable assemblies, the cable assemblies need to be subjected to wiring harness treatment and binding fixation.

The radio frequency coaxial contact element in the prior art mostly adopts the connector to freely float along with a cable in order to meet the floating requirement of the connector, and the existing problems are that: the cable cannot be fixed; particularly, for a longer integrated cable assembly, the cable is not fixed, the tail end of the connector is stressed greatly, and the reliability is greatly reduced; meanwhile, the waterproof and sealing requirements cannot be met.

The utility model has the following contents:

the utility model overcomes prior art's is not enough, provides a coaxial contact, and the contact connects and installs in the collection moulding piece after the cable, can realize self floating, satisfies the electrical performance requirement simultaneously, and specially adapted has waterproof sealing, and the cable needs the service environment of the fixed processing of pencil ligature.

In order to achieve the above purpose, the utility model adopts the technical scheme that: a coaxial contact element comprises a floating assembly and a fixed assembly which are mutually butted, wherein an elastic element for elastic interval abutting and a check ring for floating limit are arranged between the floating assembly and the fixed assembly; the floating assembly comprises an inner conductor assembly and a first shell assembly sleeved outside the inner conductor assembly, wherein a first insulating medium is arranged between the inner conductor assembly and the first shell assembly; the fixed subassembly includes can with the switching hole closes the piece of piece, and the cover of inner conductor closes the outside second shell closes the piece of piece, switching hole closes the piece with be provided with the second insulating medium between the second shell closes the piece.

The utility model discloses an in the preferred embodiment, first shell closes the first outer conductor that the piece includes well expert, the outside of the one end of first outer conductor is provided with the draw-in groove, be provided with the reed in the draw-in groove, the other end of first outer conductor with second shell closes the piece butt joint.

In a preferred embodiment of the present invention, the inner conductor assembly comprises a central conductor penetrating through the first insulating medium, and an elastic conductor arranged inside the cavity of the first housing assembly and assembling the first insulating medium and the central conductor.

In a preferred embodiment of the present invention, one end of the elastic conductor of the annular structure is embedded between the first insulating medium and the first outer conductor; the other end of the elastic conductor is elastically embedded between the first insulating medium and the second outer conductor.

The utility model discloses an in the preferred embodiment, be provided with the spacing groove on the first outer conductor, the spacing groove provides the spacing space that floats with the retaining ring cooperation.

In a preferred embodiment of the present invention, at least one elastic tongue is axially disposed at the other end of the elastic conductor and supported on the first insulating medium, and the elastic tongue is in elastic contact with the second outer conductor.

In a preferred embodiment of the present invention, the central conductor includes a pin end inserted into the through hole assembly, and a butt end inserted into the first outer conductor; and a limiting section which is sleeved with the first insulating medium in a penetrating manner is arranged between the needle end and the butt joint end.

The utility model discloses an in the preferred embodiment, second shell closes the piece include with the butt joint sleeve pipe of first outer conductor butt joint, butt joint sleeve pipe one end is provided with annular two, butt joint sheathed tube other end is provided with and is used for inserting the end that inserts of cable.

The utility model discloses an in the preferred embodiment, switching hole closes the piece and includes the switching hole that supports through second insulating medium, switching hole both ends are provided with the hole, the hole of one end with center conductor elastic contact, the hole of the other end and grafting income the heart yearn of the cable of second shell closes the piece is fixed.

The utility model discloses an in the preferred embodiment, the butt joint sleeve pipe is close to the outside of inserting one side of end is provided with the ring platform, butt joint sheathed tube outside cover is equipped with the elastic component, the elastic component activity is injectd the ring platform with the activity that constitutes between the first shell closes the piece is accomodate the intracavity.

The utility model provides a defect that exists in the technical background, the utility model discloses profitable technological effect is:

the utility model discloses a coaxial contact, contact connect install in the collection moulding piece after the cable, can realize that self floats, the cable can fix motionlessly, satisfies the electrical performance requirement simultaneously, and specially adapted has waterproof sealing, and the cable needs the service environment of pencil ligature fixed processing.

The shaft contact part movably limits and combines the floating assembly and the fixed assembly through a check ring and realizes floating through an elastic part; the elastic reed of the elastic conductor is in elastic contact with the second outer conductor, and the needle end of the central conductor is in elastic contact with the switching hole through the insertion of the needle hole, so that the mechanical performance and the electrical performance are met; fixedly connecting the second shell assembly with the switching hole assembly through a cable; therefore, after the contact element is connected with the cable, the connector can float, and the cable can be ensured to be fixed.

Drawings

The present invention will be further explained with reference to the drawings and examples.

Fig. 1 is a schematic structural view of a preferred embodiment of the present invention;

fig. 2 is an external structural view of a preferred embodiment of the present invention;

FIG. 3 is a schematic cross-sectional structural view of a preferred embodiment of the present invention;

FIG. 4 is a schematic diagram of the external structure of the preferred embodiment of the present invention installed in an integrated module;

FIG. 5 is a schematic cross-sectional view of a preferred embodiment of the present invention installed in an integrated module;

fig. 6 is an exploded view of the structure of the preferred embodiment of the present invention;

wherein, 1-floating component, 11-first housing assembly, 111-reed, 112-first outer conductor, 12-inner conductor assembly, 121-elastic conductor, 122-first insulating medium, 123-central conductor, 2-fixing component, 21-second housing assembly, 211-elastic element, 212-second outer conductor, 22-switching hole assembly, 221-switching hole, 222-second insulating medium, 223-gasket, 3-retainer, 4-cable, and X-axis.

Detailed Description

The invention will now be described in further detail with reference to the accompanying drawings, which are simplified schematic drawings and illustrate, by way of illustration only, the basic structure of the invention, and which therefore show only the constituents relevant to the invention.

It should be noted that, if directional indications (such as up, down, bottom, top, etc.) are involved in the embodiments of the present invention, the directional indications are only used for explaining the relative position relationship between the components, the motion situation, etc. in a specific posture, and if the specific posture is changed, the directional indications are changed accordingly. The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. Unless expressly stated or limited otherwise, the terms "disposed," "connected," and "connected" are intended to be inclusive and mean, for example, that there may be a fixed connection, a removable connection, or an integral connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in figures 1-6, the coaxial contact comprises a floating assembly 1 and a fixed assembly 2 which are mutually butted, and an elastic piece 211 for elastic interval abutting and a retaining ring 3 for floating limiting are arranged between the floating assembly 1 and the fixed assembly 2. The floating component 1 can perform linear reciprocating motion in the axial direction relative to the fixed component 2 under the action of external force; and elastically abutted or elastically restored by an elastic member 211 for elastically spacing abutment provided between the floating assembly 1 and the fixed assembly 2. The elastic member 211 is preferably a spring, but is not limited thereto, and other elastic structure products may be used. Utilize floating assembly 1 and fixed subassembly 2 between be provided with the elastic component 211 that is used for the elasticity interval to lean on and be used for spacing retaining ring 3 that links up, the spacing that floats when carrying out straight reciprocating motion in the axial. More specifically, the floating assembly 1 and the fixed assembly 2 in the coaxial contact are combined through the elastic member 211 and the retainer ring 3 to form a coaxial contact structure in which an inner conductor, an insulator and an outer conductor are sleeved and assembled from the central axis to the outside.

In a preferred embodiment of the present invention, the floating assembly 1 includes an inner conductor assembly 12 and a first outer casing assembly 11 sleeved outside the inner conductor assembly 12, and a first insulating medium 122 is disposed between the inner conductor assembly 12 and the first outer casing assembly 11.

Specifically, the first housing assembly 11 includes a first outer conductor 112 passing through the first housing assembly, one end of the first outer conductor 112 is provided with a clamping groove, a spring 111 is arranged in the clamping groove, preferably, the clamping groove is a first ring groove, and the first ring groove is externally sleeved or surrounded with the spring 111; the other end of the first outer conductor 112 is butted against the fixed member 2. Furthermore, the spring 111 has a bump.

Specifically, the inner conductor assembly 12 includes a central conductor 123 disposed in the first insulating medium 122, and an elastic conductor 121 disposed between the first insulating medium 122 and the first outer conductor 112. More specifically, the central conductor 123 includes a pin end inserted into the fixing component 2, and a butt end with the other end inserted into the first outer conductor 112, and a limiting section sleeved with the first insulating medium 122 is disposed between the pin end and the butt end. Preferably, the butt end of the head of the central conductor 123 is provided with a tongue, so that the contact is inserted and jointed strongly when the butt joint is used.

Furthermore, in a preferred embodiment of the present invention, the first insulating medium 122 of the floating assembly 1 is sleeved on the limiting section of the central conductor 123 in the inner conductor assembly 12, the elastic conductor 121 in the inner conductor assembly 12 is sleeved outside the first insulating medium 122, and the elastic conductor 121 and the first insulating medium 122 are embedded in each other to form a clamping joint. The elastic conductor 121 assembles the first insulating medium 122 and the central conductor 123 and is arranged inside the cavity of the first housing assembly 11. One end of the elastic conductor 121 with an annular structure is embedded between the first insulating medium 122 and the first outer conductor 112, and the other end of the elastic conductor 121 is provided with one or more elastic tongues abutting against the first insulating medium 122, the elastic tongues are in elastic contact with the fixing component 2, and a gap is reserved between the elastic conductor 121 and the first housing assembly 11. Resilient conductor 121 cooperates with first insulating medium 122 to coaxially confine center conductor 123 within first outer conductor 112, spacing center conductor 123 from first outer conductor 112 without making electrical contact.

The utility model discloses in a preferred embodiment, fixed subassembly 2 is including the switching close piece 22 that can dock with inner conductor close piece 12 to and the cover is established at the outside second housing close piece 21 of switching close piece 22, is provided with second insulating medium 222 between switching close piece 22 and the second housing close piece 21, and second insulating medium 222 inlays and establishes in the cavity of second housing close piece 21, and second insulating medium 222 supports switching close piece 22 and inlays and establish in the cavity of second housing close piece 21.

Specifically, in a preferred embodiment of the present invention, the second housing assembly 21 includes a docking sleeve to be docked with the first outer conductor 112, the docking sleeve is provided with a boss inside the end close to the first outer conductor 112, the fixed component 2 can be docked with the snap ring or the convex block protruding outward on the elastic tongue spring in the floating component 1 through the boss to realize the docking block, to lean against the limit, and the movable docking of the fixed component 2 and the floating component 1 is realized.

More preferably, a second annular groove is formed on the outer side of one end of the butt-joint sleeve close to the first outer conductor 112, and an insertion end for inserting the cable 4 is formed on the other end of the butt-joint sleeve. And the inner wall of the first outer conductor 112 near one end of the second housing assembly 21 is provided with a limiting groove, the limiting groove corresponds to the second annular groove, a retaining ring embedded in the second annular groove in a sliding manner is embedded in the second annular groove, and the limiting groove, the retaining ring 3 and the second annular groove provide floating limiting.

Furthermore, the external portion of the butt joint sleeve close to the side of the insertion end is provided with a ring table, the external portion of the butt joint sleeve is sleeved with an elastic piece 211, and the elastic piece 211 is movably limited in a movable accommodating cavity formed between the ring table and the first shell assembly 11. Forming an elastic abutment of the fixed assembly 2 and the floating assembly 1.

Specifically, in a preferred embodiment of the present invention, the through hole engaging member 22 includes a through hole 221 supported by the second insulating medium 222, and a gasket 223 embedded inside the second housing engaging member 21. The two ends of the switch hole 221 are provided with inner holes, the inner hole of one end is elastically contacted with the central conductor 123, and the inner hole of the other end is fixed with the core wire of the cable 4 inserted into the second housing assembly 21. More specifically, the second outer conductor 212 is fixed to the cable 4 shield.

The utility model discloses the theory of operation:

as shown in fig. 1-6, the first housing assembly 11 and the second housing assembly 21 movably connected to the first housing assembly 11 form an outer conductor; the inner conductor assembly 12 and the adapting hole assembly 22 correspondingly spliced with the inner conductor assembly 12 form an inner conductor; the inner conductor and the outer conductor are installed at a certain interval through an insulator, and the insulator comprises a first insulating medium 122 sleeved between the first shell assembly 11 and the inner conductor assembly 12 and a second insulating medium 222 sleeved between the second shell assembly 21 and the adapting hole assembly 22. Be provided with between first shell closing member 11 and the second shell closing member 21 and be used for the elasticity interval to lean on elastic component 211, and still be provided with between first shell closing member 11 and the second shell closing member 21 and be used for spacing retaining ring that links up. The elastic contact is realized by inserting the needle end of the inner conductor 123 into the inner hole of the adapting hole 221 through the pinhole.

When in use: when the floating assembly 1 is axially stressed, the elastic piece 211 is compressed, the two elastic contact parts of the floating assembly 1 and the fixed assembly 2 are dislocated and displaced, and the compression of the elastic piece 211 realizes the axial floating of the floating assembly 1 in the coaxial contact piece. When the cable 4 and the fixing component 2 of the coaxial contact are installed and inserted for use, the elastic member 211 is compressed, and the cable 4 and the fixing component 2 do not move.

When the force is removed, the elastic piece 211 rebounds, and the up-down floating distance is limited by the retainer ring 3; in the coaxial contact element, the elastic conductor 121 in the inner conductor assembly 12 is provided with an elastic tongue, the elastic tongue is elastically contacted with the second outer conductor 212, the needle end of the central conductor 123 in the inner conductor assembly 12 is matched with the switching hole 221 through a needle hole, the elastic contact is realized, after the coaxial contact element is connected with the cable 4, the switching hole assembly 22 and the second outer housing assembly 21 are fixed together, and at the moment, the coaxial contact element can realize floating when being stressed and compressed.

In order to avoid the problem that the cable 4 cannot be fixed and processed due to the fact that the cable 4 floats up and down along with the coaxial contact piece, the switching hole 221 is formed in the coaxial contact piece, the elastic piece 211 and the retaining ring 3 floating mechanism are arranged outside the coaxial contact piece, and after the cable 4 is assembled on the coaxial contact piece, the second outer conductor 212, the cable 4 and the switching hole assembly 22 are fixed together. The coaxial contact is installed in the integrated module, when the coaxial contact is plugged, the elastic element is compressed, only the floating component 1 of the coaxial contact moves, and the fixed component 2 and the cable 4 fixedly connected with the fixed component are fixed in position.

Above concrete implementation is right the utility model provides a scheme thought concrete support, can not injecing with this the utility model discloses a protection scope, all according to the utility model provides a technical thought, any change or equivalent change of equivalence that do on this technical scheme basis all still belong to the utility model discloses technical scheme's scope of protection.

Claims

1. Coaxial contact comprising a floating assembly (1) and a fixed assembly (2) reciprocally coupled, characterized in that: an elastic piece (211) for elastic interval abutting and a check ring (3) for floating limiting are arranged between the floating assembly (1) and the fixed assembly (2);

the floating assembly (1) comprises an inner conductor assembly (12) and a first outer shell assembly (11) sleeved outside the inner conductor assembly (12), wherein a first insulating medium (122) is arranged between the inner conductor assembly (12) and the first outer shell assembly (11);

fixed subassembly (2) including can with switching hole closes piece (22) of inner conductor closes piece (12) butt joint, and the cover is established second shell closes piece (21) outside switching hole closes piece (22), switching hole closes piece (22) with be provided with second insulating medium (222) between second shell closes piece (21).

2. A coaxial contact according to claim 1, wherein: the first shell assembly (11) comprises a first outer conductor (112) communicated with the middle, a clamping groove is formed in the outer portion of one end of the first outer conductor (112), a reed (111) is arranged in the clamping groove, and the other end of the first outer conductor (112) is in butt joint with the second shell assembly (21).

3. A coaxial contact according to claim 2, wherein: the inner conductor assembly (12) comprises a central conductor (123) penetrating through the first insulating medium (122), and an elastic conductor (121) which assembles the first insulating medium (122) and the central conductor (123) and is arranged inside the cavity of the first shell assembly (11).

4. A coaxial contact according to claim 3, wherein: one end of the elastic conductor (121) with the annular structure is embedded between the first insulating medium (122) and the first outer conductor (112); the other end of the elastic conductor (121) is elastically embedded between the first insulating medium (122) and the second outer conductor (212).

5. A coaxial contact according to claim 2, wherein: the first outer conductor (112) is provided with a limiting groove, and the limiting groove is matched with the retainer ring (3) to provide a floating limiting space.

6. The coaxial contact of claim 4, wherein: the other end of the elastic conductor (121) is axially provided with at least one elastic tongue spring abutting against the first insulating medium (122), and the elastic tongue spring is in elastic contact with the second outer conductor (212).

7. A coaxial contact according to claim 6, wherein: the central conductor (123) comprises a needle end which is correspondingly inserted with the switching hole assembly (22) and a butt joint end which is arranged in the first outer conductor (112) in a penetrating way; a limiting section which is sleeved with the first insulating medium (122) in a penetrating manner is arranged between the needle end and the butt joint end.

8. A coaxial contact according to claim 7, wherein: the second housing assembly (21) comprises a butt joint sleeve butted with the first outer conductor (112), one end of the butt joint sleeve is provided with a second annular groove, and the other end of the butt joint sleeve is provided with an insertion end for inserting a cable (4).

9. The coaxial contact of claim 4, wherein: switching hole closes piece (22) including switching hole (221) through second insulating medium (222) support, switching hole (221) both ends are provided with the hole, the hole of switching hole (221) one end with central conductor (123) elastic contact, the hole of switching hole (221) other end with peg graft into the heart yearn of cable (4) of second shell closes piece (21) is fixed.

10. A coaxial contact according to claim 8, wherein: the outer portion of one side, close to the insertion end, of the butt joint sleeve is provided with a ring table, the elastic piece (211) is sleeved on the outer portion of the butt joint sleeve, and the elastic piece (211) is movably limited in a movable containing cavity formed between the ring table and the first shell assembly (11).