CN212366366U

CN212366366U - Coaxial connector

Info

Publication number: CN212366366U
Application number: CN202021407951.8U
Authority: CN
Inventors: 杨云超; 白攀
Original assignee: Kunshan Leijiang Communication Technology Co ltd
Current assignee: Kunshan Leijiang Communication Technology Co ltd
Priority date: 2020-07-16
Filing date: 2020-07-16
Publication date: 2021-01-15
Anticipated expiration: 2030-07-16

Abstract

The utility model relates to a coaxial connector, include outer conductor, central conductor and general outer conductor and central conductor fixing insulator as an organic whole, the outer conductor includes the barrel, certainly barrel bottom level is bent and is extended the weld part that forms and pass through the grafting chamber that the barrel encloses the establishment, the central conductor is including being located the contact site of barrel central point department of putting and certainly contact site bottom level is bent the leg of formation, the free end of the leg of central conductor is located the barrel encloses the grafting intracavity of establishing. The signal transmission performance can be effectively improved.

Description

Coaxial connector

Technical Field

The utility model relates to an electric connector field especially relates to a coaxial connector.

Background

Chinese patent No. 204067768 discloses a coaxial connector including a center conductor, an outer conductor, and an insulating body that combines the center conductor and the outer conductor into a whole, wherein the center conductor includes a contact portion formed by axially stretching inside the outer conductor, a base portion formed at the bottom of the contact portion, and a leg extending radially from the base portion to outside the outer conductor. The periphery of contact site is the contact surface, and inside cavity forms the cavity central conductor shaping in this internal back of insulator, the opening of the cavity bottom of contact site is sealed by insulator, causes the space in the cavity is sealed and is formed the cavity, the cavity does not lead to the fact the influence to radio frequency signal's matching and continuity with external intercommunication. The bottom surface of the extended part of the welding leg needs to be exposed at the bottom of the insulating body, and the bonding surface of the welding leg and the insulating body is insufficient, so that the bonding strength between the extended part of the welding leg and the insulating body is insufficient.

Meanwhile, the coaxial connector is used for transmitting radio frequency signals, the welding leg of the central conductor extends out of the outer conductor, when the radio frequency signals are transmitted, the radio frequency signals are conducted to the contact part of the central conductor through the welding leg, the contact part is surrounded and shielded by the outer conductor, but the radio frequency signals of the welding leg still cause interference to the outside or the interference of the outside signals to the radio frequency signals transmitted by the welding leg.

SUMMERY OF THE UTILITY MODEL

Based on this, the utility model provides a coaxial connector makes the transmission of signal on the center conductor be in shielding state completely in order to obtain better signal transmission performance.

In order to solve the technical problem, the application provides a coaxial connector, include outer conductor, central conductor and incite somebody to action outer conductor and central conductor fix insulator as an organic whole, the outer conductor includes the barrel, certainly barrel bottom level is bent and is extended the weld part that forms and pass through the barrel encloses the grafting chamber of establishing, the central conductor is including being located the contact site of barrel central point department of putting and certainly contact site bottom level is bent the leg of formation, the free end of the leg of central conductor is located the barrel encloses the grafting intracavity of establishing.

Preferably, the insulation body comprises a substrate which is formed at the bottom of the insertion cavity and integrally forms the bottom of the barrel body, the welding leg and the bottom of the contact part, and a through hole is formed in the position of the welding leg in a vertically penetrating mode so that the free end of the welding leg is located in the through hole.

Preferably, the outer conductor still includes the breach of seting up on the barrel front and back direction, the weld part is located the horizontal both sides of barrel, insulator still include certainly the basement extends to the breach fills the rib of breach, the leg is just to one of them breach, the bottom surface of rib is equipped with the material trough of belt, the free end of leg is connected with the material area, the material area extends to through the material trough the barrel outside.

Preferably, the through hole is formed when the insulation body is molded, and the material strap connected with the central conductor is cut off through the through hole after the insulation body is injection molded.

Preferably, the material belt connected with the central conductor is cut off in the plug cavity after the insulation body is injection molded, and the through hole is formed by cutting off at the same time.

Preferably, the contact portion includes a first wall portion and a second wall portion connected to one end of the solder tail, the first wall portion and the second wall portion are folded oppositely to form a cavity, and a free end of the first wall portion and a free end of the second wall portion are formed with a connecting seam.

Preferably, a butting connector is butted with the coaxial connector, the butting connector comprises a butting terminal clamped on the outer wall surface of the central conductor, and the butting terminal is clamped on the outer wall surface of the central conductor through a pair of elastic clamping arms to realize electrical contact.

Preferably, the seam faces the solder tail, the bottom surfaces of the first and second wall portions at the seam position are formed with exposed portions, the bottom surfaces of the exposed portions are flush with the bottom surfaces of the solder tail, the first and second wall portions are cut away near the solder tail to form cut-away portions, and the surfaces of the cut-away portions are entirely higher than the exposed portions in the vertical direction.

Preferably, the welding part is formed on two transverse sides of the barrel, the notch penetrates through the bottom of the barrel and is communicated with the inserting cavity, the welding part is located on one side of the notch, an inclined surface is formed by thinning, and the top surface of the reinforcing part is flush with the top surface of the welding part and is filled with the inclined surface.

Preferably, the bottom surfaces of the exposed part and the solder leg are exposed to the bottom surface of the insulating body.

The utility model provides a coaxial connector's central conductor's leg does not extend the barrel of outer conductor is outside, simultaneously set up the perforating hole on the insulator of grafting chamber bottom, make the free end of leg is located in the perforating hole, when transmission signal, the signal is in transmission on the central conductor is all by outer conductor shields, is favorable to promoting the transmission performance of signal.

Drawings

Fig. 1 is a perspective assembly view of the coaxial connector of the present application;

FIG. 2 is a perspective assembly view of the coaxial connector of the present application from another angle;

fig. 3 is an exploded perspective view of the coaxial connector of the present application;

fig. 4 is a perspective view of the center conductor of the coaxial connector of the present application;

fig. 5 is a sectional view taken along the broken line a-a shown in fig. 1.

The meaning of the reference symbols in the drawings is:

an outer conductor-10; a cylinder body-11; a plug cavity-12; a weld-13; concave hole-131; a recess-132; an inclined plane-133; gap-14; an insulator body-20; a substrate-21; terminal slot-22; an annular groove-221; fill bottom-222; a through-hole-23; a reinforcement-24; a trough is arranged at-25; a central conductor-30; a solder tail-31; a contact portion-32; a first wall portion-321; a second wall portion-322; seam-323; an exposed portion-324; a cut-out-325; cavity-33.

Detailed Description

In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. The preferred embodiments of the present invention are shown in the drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

In the present application, the X direction shown in fig. 1 is the left-right direction (lateral direction), the Y direction is the front-back direction (longitudinal direction), and the Z direction is the upper side of the up-down direction (vertical direction).

Referring to fig. 1 to 3, a coaxial connector of the present application includes an outer conductor 10, a central conductor 30, and an insulating body 20 holding the outer conductor 10 and the central conductor 30 together.

The outer conductor 10 comprises a cylinder 11, a welding part 13 formed by bending the bottom of the cylinder 11, and an insertion cavity 12 formed by surrounding the cylinder 11.

The welding part 13 is formed by bending and horizontally extending from the bottom of the cylinder 11 along the transverse outer side, and the welding part 13 comprises two independent parts. Notches 14 are respectively formed in the front end and the rear end of the barrel 11, the notches 14 are located between the welding portions 13, and the position, located at the notch 14, of the bottom of the barrel 11 is cut off to enable the notch 14 to be communicated to the inserting cavity 12.

The vertical outer end of welding part 13 is equipped with shrinkage pool 131, the horizontal outside of welding part 13 is equipped with notch 132, shrinkage pool 131 with notch 132 can make soldering tin adhesion extremely when the welding shrinkage pool 131 and notch 132 increase the adhesion surface of soldering tin in order to strengthen the cohesion between welding part 13 and the printed circuit board.

The welding portion 13 is thinned at the position of the notch 14 to form an inclined surface 133, and the thickness of the welding portion 13 at the position of the inclined surface 133 is smaller than that of the rest position of the welding portion 13. In a specific embodiment, the inclined surfaces 133 are provided on both upper and lower sides of the edge of the welded portion 13 located at the notch 14.

As shown in fig. 4 to 5, the central conductor 30 includes a contact portion 32 located at the center of the plug cavity 12, a solder leg 31 extending from the bottom of the contact portion 32 and bent vertically out of the barrel 11, and a cavity 33 located in the middle of the contact portion 32.

The contact portion 32 includes first and

second wall portions

321 and 322 respectively connected to the ends of the solder tail 31, and an engagement seam 323 formed at the engagement portion of the first and

second wall portions

321 and 322. The first and

second wall portions

321, 322 are connected to the solder fillet 31 at one end, and then the first and

second wall portions

321, 322 are bent toward each other to enclose a cylindrical structure, and the cavity 33 is located in the middle of the cylindrical structure. The joining seam 323 faces the solder fillet 31, i.e., the first and

second wall portions

321 and 322 have a symmetrical structure. The bottom surfaces of the first and

second wall portions

321, 322 at the position of the joining seam 323 form an exposed portion 324, and the exposed portion 324 is planar and flush with the bottom surface of the solder fillet 31. The first and

second wall portions

321 and 322 have a cut-out portion 325 cut out from a side thereof adjacent to the solder tail 31. The top surfaces of the first and

second wall portions

321, 322 are flush.

The free end of the weld leg 31 is located in the plug cavity 12 enclosed by the barrel 11, and does not extend out of the barrel 11.

The center conductor 30 is formed by press-forming a plate-shaped metal, and is punched to have a shape, the leg 31 is bent and formed, and the first and

second wall portions

321 and 322 are folded toward each other to form the contact portion. The extension 312 and the cut-out 325 are formed in advance at the time of punching out the sheet metal, and then are bent or the like. The free end of the welding leg 31 is connected with a material belt, and the material belt extends out of the barrel 11 from one of the notches 14 so as to facilitate automatic operation.

The insulating body 20 holds the central conductor 30 and the outer conductor 10 together. Specifically, the insulating body 20 includes a base 21 formed at the bottom of the plugging cavity 12, a reinforcing portion 24 extending from the front end and the rear end of the base 21 to the notch 14, a terminal slot 22 formed in the center of the base 21 for holding the bottom of the central conductor 30, and a through hole 23 formed at the free end of the solder foot 31.

The terminal groove 22 includes a ring groove 221 in which the first and

second wall portions

321, 322 of the contact portion 32 are embedded in the base 21, and a filling bottom portion 222 which is located in the middle of the ring groove 221 and fills the cavity 33. The bottom surfaces of the base 21 and the reinforcing part 24 corresponding to one side of the fillet 31 are provided with a material belt groove 25, and the material belt is connected to the free end of the fillet 31 in the plug cavity 12 and extends out of the cylinder 11 along the material belt groove 25. The upper and lower surfaces of the reinforcing portion 24 are flush with the upper and lower surfaces of the welded portion 13, respectively. The reinforcing portion 24 fills up the upper and lower sides of the inclined surface 133 of the welding portion 13 at the edge of the notch 14 to reinforce the coupling force between the insulating body 20 and the outer conductor 10. The cut-out 325 of the first and

second wall portions

321, 322 near the solder fillet 31 is filled with plastic to enhance the bonding force between the insulator 20 and the central conductor 30.

After the insulating body 20 is injection molded, the bottom surface of the leg main body 311 and the exposed portions 324 of the bottom surfaces of the first and

second wall portions

321, 322 are exposed to the bottom surface of the insulating body 20 and are flush with the bottom surface of the insulating body 20 and the bottom surface of the soldering portion 13. During soldering, the solder leg 31, the soldering portion 13 and the exposed portion 324 can be soldered to the printed circuit board.

The manufacturing method of the coaxial connector of the present application is as follows:

the outer conductors 10 and the central conductors 30 are formed by punching, and after the punching is finished, the plurality of outer conductors 10 and the plurality of central conductors 30 are respectively connected through material belts; the outer conductor 10 and the central conductor 30 are placed into an injection mold through material belt pulling to injection mold the insulation body 20 so as to hold the outer conductor 10 and the central conductor 30 together. After the injection molding is finished, the material belt is cut, and the material belt of the central conductor 30 is cut in the following two ways:

firstly, when the insulation body 20 is injection molded, the through hole 23 is already molded at the position of the fillet 31 of the central conductor 30, when the material strip is cut off, the material strip is directly cut through the through hole 23, and the part of the material strip located in the material strip groove 25 automatically falls off downwards;

secondly, when the insulating body 20 is injection molded, the through hole 23 is not formed, when the material belt is cut, the substrate 21 of the insulating body 20 is directly cut off to form the through hole 23, the material belt is cut off at the same time, and the material belt falls off downwards.

The coaxial connector of the present application is mated with a mating connector (not shown), the mating connector includes a mating terminal clamped on the outer wall surface of the central conductor 30, and the mating terminal is clamped on the outer wall surface of the central conductor 30 by a pair of elastic clamping arms to realize electrical contact.

The contact portion 32 of the center conductor 30 of the coaxial connector of the present application is configured as an open cavity 33, which helps to improve signal matching and continuity. Meanwhile, the extended portions 312 are formed on both lateral sides of the solder leg 31, and the cut-out portion 325 is provided to make the combination of the central conductor 30 and the insulating body 20 more firm.

The application discloses coaxial connector's central conductor 30's leg 31 does not extend the barrel 11 of outer conductor 10 is outside, simultaneously, set up perforating hole 23 on the insulator 20 of grafting chamber 12 bottom, make the free end of leg 31 is located in the perforating hole 23, when the transmission, the signal is in transmission on the central conductor 30 is all by outer conductor 10 shields, is favorable to promoting the transmission performance of signal.

The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above examples only represent preferred embodiments of the present invention, which are described in more detail and detail, but are not to be construed as limiting the scope of the invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. The utility model provides a coaxial connector, includes outer conductor, central conductor and will outer conductor and central conductor fixing insulator as an organic whole, the outer conductor includes the barrel, certainly the barrel bottom level is bent and is extended the welding part that forms and pass through the barrel encloses the grafting chamber of establishing, the central conductor is including being located the contact site of barrel central point department and certainly the leg that the contact site bottom level was bent and is formed, its characterized in that, the free end of the leg of central conductor is located the barrel encloses the grafting intracavity of establishing.

2. The coaxial connector of claim 1, wherein the housing includes a base integrally formed at the bottom of the cavity and integrally forming the barrel bottom, the solder leg and the contact portion bottom, and the base has a through hole formed therethrough at the solder leg position such that the free end of the solder leg is located in the through hole.

3. The coaxial connector of claim 2, wherein the outer conductor further comprises notches formed in a front-rear direction of the barrel, the welding portions are located on both lateral sides of the barrel, the insulator further comprises a reinforcing portion extending from the base to the notches and filling the notches, the solder tail faces one of the notches, a material belt groove is formed in a bottom surface of the reinforcing portion, a material belt is connected to a free end of the solder tail, and the material belt extends to an outer side of the barrel through the material belt groove.

4. The coaxial connector of claim 3, wherein the through-hole is formed during molding of the dielectric body, and wherein the strip of material to which the center conductor is connected is cut through the through-hole after injection molding of the dielectric body.

5. The coaxial connector of claim 3, wherein the strip of material to which the center conductor is connected is cut out in the cavity after the injection molding of the housing and at the same time, the through hole is formed.

6. The coaxial connector of claim 3, wherein the contact portion includes first and second wall portions connected to one end of the solder tail, the first and second wall portions being folded toward each other to define a cavity, and engagement slits being formed at free ends of the first and second wall portions.

7. The coaxial connector of claim 6, wherein a mating connector is mated with the coaxial connector, the mating connector includes a mating terminal clamped on the outer wall surface of the center conductor, and the mating terminal is clamped on the outer wall surface of the center conductor by a pair of elastic clamping arms to achieve electrical contact.

8. The coaxial connector according to claim 6, wherein the engagement seam faces the solder tail, bottom surfaces of the first and second wall portions at the position of the engagement seam are formed with exposed portions, bottom surfaces of the exposed portions are flush with the bottom surfaces of the solder tail, the first and second wall portions are cut away near the solder tail to form cut-away portions, and surfaces of the cut-away portions are entirely higher in a vertical direction than the exposed portions.

9. The coaxial connector of claim 8, wherein the welding portion is formed on both lateral sides of the barrel, the notch is communicated with the plug cavity through the bottom of the barrel, the welding portion is thinned on one side of the notch to form an inclined surface, and the top surface of the reinforcing portion is flush with the top surface of the welding portion and fills the inclined surface.

10. The coaxial connector of claim 9, wherein a bottom surface of the exposed portion, the solder tail, is exposed to a bottom surface of the dielectric body.