CN220797293U

CN220797293U - Miniaturized low intermodulation coaxial connector

Info

Publication number: CN220797293U
Application number: CN202322521975.6U
Authority: CN
Inventors: 张伟超; 李磊; 黄兴武; 任家发
Original assignee: Anhui Run Electronic Technology Co ltd
Current assignee: Anhui Run Electronic Technology Co ltd
Priority date: 2023-09-15
Filing date: 2023-09-15
Publication date: 2024-04-16
Anticipated expiration: 2033-09-15

Abstract

The utility model relates to the field of coaxial connectors, in particular to a miniaturized low intermodulation coaxial connector which comprises a male head and a female head, wherein the male head comprises a male head outer conductor, a male head insulator and a male head central conductor, which are coaxially and sequentially arranged from outside to inside and are used for being matched with a female head outer conductor, and the male head central conductor is in plug-in fit with the female head central conductor; an inner elastic piece positioned between the male outer conductor and the female outer conductor is coaxially arranged on the male outer conductor, the inner elastic piece is provided with an inner compression section and an outer compression section, the inner compression section of the inner elastic piece is abutted with the male insulator, and the outer compression section of the inner elastic piece is abutted with the inner ring of the female outer conductor. The utility model greatly improves the firmness of the male head and the female head during the plug-in and pull-out fixation.

Description

Miniaturized low intermodulation coaxial connector

Technical Field

The utility model relates to the field of coaxial connectors, in particular to a miniaturized low intermodulation coaxial connector.

Background

The coaxial connector is a component which is attached to a cable or mounted on an instrument, is used as a component for electrically connecting or separating a transmission line, and consists of a male head and a female head, and when the male head connector and the female head connector are plugged, a pin of a male head center conductor is inserted into a jack of a female head center conductor, so that connection is formed.

The existing coaxial connector is as described in patent number 202320663567.1, and the female and male connectors are connected by inserting the push-in plug into the female end shell, so that the installation and arrangement operation of the radio frequency circuit system are facilitated; under the long-time operation, the plug is easy to loosen after being worn, and the normal operation of the coaxial connector is affected, so that the stability is poor, and the problem is to be solved.

Disclosure of Invention

In order to avoid and overcome the technical problems in the prior art, the utility model provides a miniaturized low intermodulation coaxial connector. The utility model greatly improves the firmness of the male head and the female head during the plug-in and pull-out fixation.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

the miniaturized low intermodulation coaxial connector comprises a male head and a female head, wherein the male head comprises a male head outer conductor, a male head insulator and a male head central conductor, which are coaxially and sequentially arranged from outside to inside and are used for being matched with a female head outer conductor, and the male head central conductor is in plug-in fit with the female head central conductor; an inner elastic piece positioned between the male outer conductor and the female outer conductor is coaxially arranged on the male outer conductor, the inner elastic piece is provided with an inner compression section and an outer compression section, the inner compression section of the inner elastic piece is abutted with the male insulator, and the outer compression section of the inner elastic piece is abutted with the inner ring of the female outer conductor.

As a further scheme of the utility model: the inner elastic sheet comprises flap sheets which are uniformly and outwardly spread along the circumferential direction, the root of each flap sheet is provided with an inner bulge, and each inner bulge is abutted with the male insulator to form an inner compression section; the head of each petal is abutted with the inner ring of the outer conductor of the female head to form an outer compression section.

As still further aspects of the utility model: and the inner ring of the male outer conductor is provided with an inner positioning step for assembling the inner spring plate.

As still further aspects of the utility model: the inner spring piece is a beryllium bronze spring piece which is formed by stamping after heat treatment, and a straight line for guiding is arranged at the matching surface of the inner spring piece and the outer conductor of the male head.

As still further aspects of the utility model: the outer ring of the male outer conductor is provided with an outer positioning step, the outer positioning step is provided with a silica gel ring, and when the male and female connectors are in plug-in fit, the end part of the female outer conductor is abutted with the silica gel ring.

As still further aspects of the utility model: the outer elastic sheet is arranged on the outer positioning step and comprises L-shaped petals uniformly distributed along the circumferential direction, the petals are matched to form a clamping cavity in a surrounding mode to clamp and fix the silica gel ring, and when the end portion of the outer conductor of the female head is abutted to the silica gel ring, the head portion of each petal generates elastic clamping action on the outer ring of the outer conductor of the female head.

As still further aspects of the utility model: the male outer conductor outer ring is coaxially provided with a lock nut in threaded fit with the female outer conductor, the lock nut is in clamping fit with the male outer conductor through a clamping ring, a gap is reserved between the lock nut and the male outer conductor for screwing the female outer conductor, and at least two groups of planar screwing surfaces are formed in the axial cutting mode for screwing operation.

As still further aspects of the utility model: the outer ring of the male insulator is provided with a positioning groove along the circumferential direction, and the inner ring of the male outer conductor is provided with positioning teeth matched with the positioning groove along the circumferential direction in a protruding manner, so that the male outer conductor is matched with the male insulator in a clamping manner.

Compared with the prior art, the utility model has the beneficial effects that:

1. according to the utility model, the inner spring plate is arranged between the male outer conductor and the male insulator, the inner protrusions of the inner spring plate are arranged in the inner rings of the inner spring plate, so that the inner protrusions serve as a fulcrum, when the inner protrusions are abutted against the male insulator, an inward elastic clamping force is applied to the female central conductor through the male insulator, the female central conductor is clamped and fixed, meanwhile, the heads of the inner spring plate plates are abutted against the inner rings of the female outer conductor, so that an elastic clamping force is applied to the female outer conductor, lever relations are formed between the head of the inner spring plate and the inner protrusions, the generated elastic clamping force is opposite in direction, and the female central conductor and the female outer conductor are simultaneously clamped and fixed through the arrangement of the inner spring plate, so that the firmness of the male and female plug in the inserting and pulling fixing process is greatly improved.

2. According to the utility model, the positioning step is formed in the inner ring of the male outer conductor, so that the positioning of the inner spring piece is facilitated, the inner spring piece is made of beryllium bronze, the stress of a product is removed firstly through processing in a heat treatment mode, meanwhile, the elasticity and the hardness of the product are ensured, and the defects caused by the assembly problem and the instability of the quality of the product are avoided.

3. According to the utility model, the positioning step is formed on the outer ring of the male outer conductor so as to facilitate positioning of the outer spring plate, the outer spring plate clamps and fixes the silica gel ring through the L-shaped flap design, the female outer conductor is pressed on the silica gel ring after passing through the head of the outer spring plate, at the moment, the head of the outer spring plate generates an inward elastic clamping action on the outer ring of the female outer conductor, so that fastening operation of the female is realized, the silica gel ring adopts the conductive silica gel ring to play a waterproof role, meanwhile, the electrical property of a product is improved, signal leakage caused by the fact that the product is not tightly matched is avoided, signal interference is avoided, the outer spring plate also plays a role of shielding ring, signal interference is prevented, the contact area between the male outer conductor and the female outer conductor is improved, the shielding effect is better, intermodulation performance is better, meanwhile, the contact resistance of the male outer conductor is reduced, and the electrical property of the product is improved.

Drawings

Fig. 1 is a schematic structural view of the present utility model.

Fig. 2 is a schematic structural diagram of an inner spring in the present utility model.

Fig. 3 is a schematic structural diagram of an outer spring in the present utility model.

In the figure:

1. a male outer conductor; 11. positioning the step; 12. an outer positioning step;

2. a male insulator; 3. a male center conductor;

4. An inner spring plate; 41. an inner protrusion;

5. a lock nut; 6. a clasp;

7. An outer spring plate; 71. and a silica gel ring.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1 to 3, in an embodiment of the present utility model, a miniaturized low intermodulation coaxial connector, a male of the connector includes a male outer conductor 1, a male insulator 2 and a male center conductor 3 coaxially and sequentially arranged from outside to inside; positioning teeth are convexly arranged on the inner ring of the male central conductor 3, and positioning grooves corresponding to the positions of the positioning teeth are formed in the outer ring of the male insulator 2 along the circumferential direction; the male central conductor 3 and the male insulator 2 are fixedly clamped and matched through a tooth slot structure, so that axial movement between the two is avoided.

One end of the male outer conductor 1 adjacent to the female is provided with an inner positioning step 11 in the inner ring and an outer positioning step 12 in the outer ring; the inner positioning step 11 and the outer positioning step 12 can be understood as shoulders of the male outer conductor 1, and the inner positioning step 11 and the outer positioning step 12 are used for installing the inner spring plate 4 and the outer spring plate 7, respectively. The inner spring piece 4 is inserted into the inner ring of the male outer conductor 1 along the axial direction and then is abutted with the inner positioning step 11, and the outer spring piece 7 is sleeved on the outer ring of the male outer conductor 1 in the axial direction and then is abutted with the outer positioning step 12.

The inner spring plate 4 adopts a six-claw or eight-claw structure design, is made of beryllium bronze, is processed in a heat treatment mode, removes the stress of the product, ensures the elasticity and hardness of the product, and avoids the poor quality and the instability of the product caused by the assembly problem. After heat treatment, the steel plate is subjected to stamping forming and then bending inwards to form a circle, and the bottom is processed with straight lines so as to be matched with the inner positioning step 11; the inner spring piece 4 is clamped and supported by the male outer conductor 1 and the male insulator 2 together, and is fixed, so that quality risks caused by riveting deformation of products are saved.

An inner bulge 41 is arranged at the root of the petal of the inner spring plate 4, and after the male head is butted with the female head, the central conductor of the female head is axially inserted into the inner cavity of the male head insulator 2 and is spliced with the central conductor 3 of the male head; after the plug-in connection, the inner bulge 41 of the inner spring plate 4 is abutted with the male insulator 2, and simultaneously, an inward elastic clamping force is applied to the female central conductor through the male insulator 2, so that the female central conductor is clamped and fixed. When the inner protrusion 41 of the inner spring 4 is used as a fulcrum and is abutted against the male insulator 2, the head of the flap of the inner spring 4 is abutted against the inner ring of the female outer conductor, so that elastic clamping force is applied to the female outer conductor, lever relation is formed between the flap of the inner spring 4 and the inner protrusion 41, and the generated elastic clamping force is opposite in direction.

The lock nut 5 of the connector is coaxially fixed outside the male outer conductor 1 through the clamp ring 6, the clamp grooves are formed in the inner ring of the lock nut 5 and the outer ring of the male outer conductor 1 along the circumferential direction for the clamp ring 6 to be assembled, and the clamp ring 6 is used for limiting the lock nut 5 and the male outer conductor 1 to axially move. The outer ring of the lock nut 5 is axially cut to form six groups of planar screwing surfaces for screwing operation.

The locking nut 5, the male outer conductor 1 and the outer positioning step 12 enclose a synthetic annular cavity for the female outer conductor to be inserted and then are in threaded fit with the locking nut 5. The outer spring 7 comprises L-shaped flaps which are uniformly arranged along the axial direction, the heads of the flaps shrink inwards, and the flaps are enclosed to form an annular cavity for the silica gel ring 71 to be installed. After passing through the head of the outer spring 7 flap, the outer conductor of the female head is tightly pressed on the silica gel ring 71, and at the moment, the head of the outer spring 7 flap generates an inward elastic clamping action on the outer ring of the outer conductor of the female head, so that the fastening operation of the female head is realized. The silica gel ring 71 is preferably conductive silica gel, and the outer spring 7 plays a role of a shielding ring, prevents signal interference, improves the contact area of the male and female heads, has better shielding effect and better intermodulation performance, reduces the contact resistance of the male outer conductor 1, and improves the electrical performance of the product.

The basic principles of the present application have been described above in connection with specific embodiments, but it should be noted that the advantages, benefits, effects, etc. mentioned in the present application are merely examples and not intended to be limiting, and these advantages, benefits, effects, etc. are not to be construed as necessarily possessed by the various embodiments of the application. Furthermore, the specific details disclosed herein are for purposes of illustration and understanding only, and are not intended to be limiting, as the application is not necessarily limited to practice with the above described specific details.

The block diagrams of the devices, apparatuses, devices, systems referred to in the present application are only illustrative examples and are not intended to require or imply that the connections, arrangements, configurations must be made in the manner shown in the block diagrams. As will be appreciated by one of skill in the art, the devices, apparatuses, devices, systems may be connected, arranged, configured in any manner. Words such as "including," "comprising," "having," and the like are words of openness and mean "including but not limited to," and are used interchangeably therewith. The terms "or" and "as used herein refer to and are used interchangeably with the term" and/or "unless the context clearly indicates otherwise. The term "such as" as used herein refers to, and is used interchangeably with, the phrase "such as, but not limited to.

Claims

1. The miniaturized low intermodulation coaxial connector comprises a male head and a female head, and is characterized in that the male head comprises a male head outer conductor (1), a male head insulator (2) and a male head central conductor (3) which are coaxially and sequentially arranged from outside to inside and are used for being matched with a female head outer conductor, and the female head outer conductor is coaxially sleeved outside the male head outer conductor (1) when the female head central conductor is in plug-in fit with the male head central conductor (3); an inner spring piece (4) positioned between the male outer conductor (1) and the female outer conductor is coaxially arranged on the male outer conductor (1), the inner spring piece (4) is provided with an inner compression section and an outer compression section, the inner compression section of the inner spring piece (4) is abutted with the male insulator (2), and the outer compression section of the inner spring piece (4) is abutted with the inner ring of the female outer conductor.

2. A miniaturized low intermodulation coaxial connector according to claim 1, characterized in that said inner spring (4) comprises flaps arranged uniformly and outwardly in circumferential direction, each flap root being provided with an inner protrusion (41), each inner protrusion (41) being in abutment with the male insulator (2) to form an inner compression section; the head of each petal is abutted with the inner ring of the outer conductor of the female head to form an outer compression section.

3. A miniaturized low intermodulation coaxial connector according to claim 1, wherein said male outer conductor (1) is provided with an inner positioning step (11) in the inner ring for assembly of the inner spring (4).

4. The miniaturized low intermodulation coaxial connector according to claim 1, wherein said inner spring (4) is a beryllium bronze spring formed by heat treatment and a mating surface of said inner spring (4) and said male outer conductor (1) is provided with a straight-line for guiding.

5. A miniaturized low intermodulation coaxial connector according to any of the claims 1-4, wherein said male outer conductor (1) outer ring is provided with an outer positioning step (12), said outer positioning step (12) is provided with a silicone ring (71), and when the male and female are in plug-in engagement, the end of the female outer conductor abuts against the silicone ring (71).

6. The miniaturized low intermodulation coaxial connector of claim 5, wherein the outer positioning step (12) is provided with an outer elastic sheet (7), the outer elastic sheet (7) comprises L-shaped flaps uniformly distributed along the circumferential direction, the flaps are matched so as to form a clamping cavity in a surrounding mode to clamp and fix the silica gel ring (71), and when the end portion of the outer conductor of the female head is abutted to the silica gel ring (71), the head of each flap generates elastic clamping action on the outer ring of the outer conductor of the female head.

7. A miniaturized low intermodulation coaxial connector according to any of the claims 1-4, characterized in that the outer ring of the male outer conductor (1) is coaxially provided with a lock nut (5) which is in threaded fit with the female outer conductor, the lock nut (5) is in snap fit with the male outer conductor (1) by means of a snap ring (6), a gap is present between the lock nut (5) and the male outer conductor (1) for screwing in the female outer conductor, and the outer ring of the lock nut (5) is axially cut to form at least two sets of planar screwing surfaces for screwing in.

8. The miniaturized low intermodulation coaxial connector of any of claims 1-4, wherein the outer ring of the male insulator (2) is provided with a positioning groove along the circumferential direction, and the inner ring of the male outer conductor (1) is provided with positioning teeth matched with the positioning groove along the circumferential direction, so as to be in clamping fit with the male insulator (2).