阅读说明：本技术 一种小型高可靠线簧孔鱼眼压接型插孔 (Small-size highly reliable wire spring hole flake crimping type jack ) 是由 郭建设 童猛 李佳 于 2019-11-18 设计创作，主要内容包括：一种小型高可靠线簧孔鱼眼压接型插孔,包括前套管、后套管、以及插孔管；所述插孔管外圆面的中间部位设有压接环槽,插孔管外圆面的一端与前套管的内管壁插接,另一端与后套管的内管壁插接；所述前套管、所述后套管位于压接环槽内的管口与压接环槽压接；所述后套管远离插孔管的一端设有鱼眼结构。本发明通过压接的方式,增大插孔的插拔拉脱力,并降低了插孔的加工尺寸精度要求,提高了良品率；通过在插孔管内设置线簧丝,增强了插孔与插针电性连接的可靠性,使插孔具备了振动等级高、插拔寿命长、插拔力柔、接触件可靠、接触电阻小的特点。本发明的结构紧凑、解决了插孔的高密度要求；采用鱼眼压接,解决了过孔处阻抗不匹配的问题。(A small-sized high-reliability fisheye pressing type jack with a wire spring hole comprises a front sleeve, a rear sleeve and a jack pipe; the middle part of the outer circular surface of the jack pipe is provided with a crimping ring groove, one end of the outer circular surface of the jack pipe is spliced with the inner pipe wall of the front sleeve pipe, and the other end of the outer circular surface of the jack pipe is spliced with the inner pipe wall of the rear sleeve pipe; the pipe orifices of the front sleeve and the rear sleeve, which are positioned in the crimping ring groove, are crimped with the crimping ring groove; and one end of the rear sleeve, which is far away from the jack pipe, is provided with a fisheye structure. According to the invention, through a compression joint mode, the plugging and pulling-out force of the jack is increased, the requirement on the machining size precision of the jack is reduced, and the yield is improved; through set up the line spring silk in the jack pipe, strengthened jack and contact pin electric connection's reliability, made the jack possess vibration level height, plug longe-lived, the gentle characteristics of plug power, contact reliable, contact resistance are little. The invention has compact structure and solves the high density requirement of the jacks; and the fisheye compression joint is adopted, so that the problem of impedance mismatching at the via hole is solved.)

1. The utility model provides a small-size high reliable wire spring hole flake crimping type jack, characterized by: comprises a front sleeve (1), a rear sleeve (2) and a jack pipe (3); a crimping ring groove (3.1) is formed in the middle of the outer circular surface of the jack pipe (3), one end of the outer circular surface of the jack pipe (3) is inserted into the inner wall of the front sleeve (1), and the other end of the outer circular surface of the jack pipe (3) is inserted into the inner wall of the rear sleeve (2); the pipe orifices of the front sleeve (1) and the rear sleeve (2) in the crimping ring groove (3.1) are crimped with the crimping ring groove (3.1); one end of the rear sleeve (2) far away from the jack pipe (3) is provided with a fisheye structure (2.1).

2. A small-sized highly reliable wire spring hole fisheye crimp type jack as claimed in claim 1, wherein: the inner wall of the jack pipe (3) is provided with a plurality of wire spring wires (4), the wire spring wires (4) extend out of two ends of the jack pipe (3), when one end of the outer circular surface of the jack pipe (3) is connected with the inner wall of the front sleeve (1) in an inserting mode, and the other end of the outer circular surface of the jack pipe (3) is connected with the inner wall of the rear sleeve (2) in an inserting mode, one end of each wire spring wire (4) is connected between the outer circular surface of the jack pipe (3) and the inner wall of the front sleeve (1) in a pressing mode, and the other end of each wire spring wire is connected between the outer circular surface of the jack pipe (3) and the inner wall of the rear.

3. A small-sized highly reliable wire spring hole fisheye crimp type jack as claimed in claim 1, wherein: the rear sleeve (2) is also provided with a conical step (2.2) for fixing the insulating sleeve, and the outer diameter of one end, far away from the fisheye structure (2.1), of the conical step (2.2) is larger than that of one end, close to the fisheye structure (2.1); the rear sleeve (2) is sleeved with the insulating sleeve in a mode that the fish eye structure (2.1) punctures and pierces.

4. A small-sized highly reliable wire spring hole fisheye crimp type jack as claimed in claim 1, wherein: an inner shaft shoulder (2.3) used for preventing the jack pipe (3) from axially moving is arranged in the rear sleeve (2).

5. A small-sized highly reliable wire spring hole fisheye crimp type jack as claimed in claim 1, wherein: the front sleeve (1) is internally provided with an inner flange (1.1) for preventing the axial movement of the jack pipe (3), and one end of the inner flange (1.1) far away from the jack pipe (3) is provided with an inner chamfer for guiding a contact pin to enter the jack pipe (3).

6. A small-sized highly reliable wire spring hole fisheye crimp type jack as claimed in claim 1, wherein: the front sleeve (1) and the rear sleeve (2) are positioned in the crimping ring groove (3.1), and the crimping of the pipe orifice and the crimping ring groove (3.1) is arc rolling crimping.

Technical Field

The invention relates to the technical field of connectors, in particular to a small-sized high-reliability fisheye crimping type jack of a wire spring hole.

Background

In order to realize high speed, high density, miniaturization and high reliability of the connector, a small-sized high-reliability jack contact element is needed, which is characterized in that the jack contact element has smaller outer diameter and higher reliability, and the end fisheye crimping is integrated (in order to realize high-speed transmission, the end welding can have the problems of impedance mismatching and the like, and the termination mode of fisheye crimping can only be adopted at present), but the jack of the contact element at home and abroad has the characteristics that: the outer diameter of the large-piece contact piece is small, the end of the large-piece contact piece is welded (high-speed transmission cannot be achieved), and no jack which integrates the three characteristics of small outer diameter, high reliability and fisheye crimping of the end is provided to meet the requirements of high speed, high density and high reliability of the connector.

Patent application No. CN201910148091.6 discloses a small-sized spring claw fisheye press-fit type socket contact, which adopts the form of spring claw to make fit contact with the pin. The connecting structure has the characteristics of high vibration level, long plugging service life and high reliability, the problem of impedance mismatching at the position of a via hole is solved by adopting fisheye compression joint, and meanwhile, the matching position of the fisheye rear sleeve and the insulator adopts a puncturing and piercing dual-characteristic assembly technology, so that the advantages of simplicity in assembly, reliability in fixation and no shaking are realized. The plugging and pulling-out force of the connecting structure depends on the magnitude of interference of the spring claw and the rear sleeve, and the electric conductivity of the contact pin and the socket depends on the contact condition of the spring claw and the contact pin. Therefore, the requirement on the machining dimensional precision of the spring claw is high, and the qualification rate of finished products is low.

Disclosure of Invention

In order to overcome the defects in the background art, the invention discloses a small-sized high-reliability wire spring hole fisheye crimping type jack, which aims to:

1. through the compression joint mode, the plugging pull-out force of the jack is increased, and the requirement on the machining size precision of the jack is lowered;

2. through set up the line spring silk in the jack pipe, reinforcing jack and contact pin electric connection's reliability.

In order to achieve the above object, a first technical solution of the present invention is: comprises a front sleeve, a rear sleeve and a jack pipe; the middle part of the outer circular surface of the jack pipe is provided with a crimping ring groove, one end of the outer circular surface of the jack pipe is spliced with the inner pipe wall of the front sleeve pipe, and the other end of the outer circular surface of the jack pipe is spliced with the inner pipe wall of the rear sleeve pipe; the pipe orifices of the front sleeve and the rear sleeve, which are positioned in the crimping ring groove, are crimped with the crimping ring groove; and one end of the rear sleeve, which is far away from the jack pipe, is provided with a fisheye structure.

The second technical scheme of the invention is as follows: on the basis of the first technical scheme, a plurality of wire spring wires are arranged on the inner wall of the jack pipe, the wire spring wires extend out of two ends of the jack pipe, when one end of the outer circular surface of the jack pipe is connected with the inner wall of the front sleeve in an inserting mode, and the other end of the outer circular surface of the jack pipe is connected with the inner wall of the rear sleeve in an inserting mode, one end of each wire spring wire is connected between the outer circular surface of the jack pipe and the inner wall of the front sleeve in a pressing mode, and the other end of each wire spring wire is connected between the outer circular surface of the jack pipe and the inner wall of the rear.

The third technical scheme of the invention is as follows: on the basis of the first technical scheme, the rear sleeve is also provided with a conical step for fixing the insulating sleeve, and the outer diameter of one end, far away from the fisheye structure, of the conical step is larger than that of one end, close to the fisheye structure, of the conical step; the rear sleeve is sleeved with the insulating sleeve in a manner that the rear sleeve is punctured and pierced through the fisheye structure.

The fourth technical scheme of the invention is as follows: on the basis of the first technical scheme, an inner shaft shoulder for preventing the axial movement of the jack pipe is arranged in the rear sleeve.

The fifth technical scheme of the invention is as follows: on the basis of the first technical scheme, an inner flange for preventing the axial movement of the jack pipe is arranged in the front sleeve, and an inner chamfer for guiding the contact pin to enter the jack pipe is arranged at one end, far away from the jack pipe, of the inner flange.

The sixth technical scheme of the invention is as follows: on the basis of the first technical scheme, the front sleeve and the rear sleeve are in arc rolling compression joint with the pipe orifice in the compression joint annular groove and the compression joint of the compression joint annular groove.

Due to the adoption of the technical scheme, compared with the background technology, the invention has the following beneficial effects:

according to the invention, through a compression joint mode, the plugging and pulling-out force of the jack is increased, the requirement on the machining size precision of the jack is reduced, and the yield is improved.

According to the invention, the wire spring wire is arranged in the jack pipe, so that the reliability of the electrical connection between the jack and the contact pin is enhanced, and the wire spring has the characteristics of high vibration level, long plugging and unplugging life, soft plugging and unplugging force, reliable contact element and small contact resistance.

The invention has compact structure and solves the high density requirement of the jacks; the fisheye compression joint is adopted, so that the problem of impedance mismatching at the via hole is solved; the insulation sleeve is simply assembled by adopting a puncturing and piercing dual-characteristic assembly technology, and the jack is fixed reliably and does not shake.

Drawings

FIG. 1 is an exploded view of the present invention.

Fig. 2 is a schematic structural view before crimping in the invention.

FIG. 3 is a schematic view of the structure of the present invention after crimping

In the figure: 1. a front sleeve; 1.1, inner flanges; 2. a rear sleeve; 2.1, fish eye structure; 2.2, a conical step; 2.3, an inner shaft shoulder; 3. a jack tube; 3.1, pressing and connecting the ring grooves; a: a crimping position.

Detailed Description

Preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only for explaining the technical principle of the present invention, and are not intended to limit the scope of the present invention.

It should be noted that in the description of the present invention, the terms of direction or positional relationship indicated by the terms "front", "rear", "inside", "outside", and the like are based on the directions or positional relationships shown in the drawings, which are merely for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

A small-size high-reliability wire spring hole fisheye crimping type jack is mainly composed of a front sleeve 1, a rear sleeve 2 and a jack tube 3, wherein the maximum outer diameters of the front sleeve 1 and the rear sleeve 2 are phi 1mm, the outer diameter of the jack tube 3 is phi 0.83mm, and the small diameter meets the requirement of high density of the jack.

As shown in fig. 2-3, a crimping ring groove 3.1 is formed in the middle of the outer circumferential surface of the jack tube 3, one end of the outer circumferential surface of the jack tube 3 is inserted into the inner wall of the front casing 1, and the other end of the outer circumferential surface of the jack tube 3 is inserted into the inner wall of the rear casing 2. Because the external diameter of crimping annular 3.1 is less than the external diameter of 3 outer disc of jack pipe, preceding sleeve pipe 1 the mouth of pipe that back sleeve pipe 2 is located crimping annular 3.1 has certain clearance with crimping annular 3.1, through circular arc roll extrusion frock, can be located the mouth of pipe and the crimping annular 3.1 circular arc roll extrusion crimping of crimping annular with preceding sleeve pipe 1, back sleeve pipe 2 in crimping annular 3.1. In fig. 2, a is a crimping position, and after crimping, the receptacle pipe 3 is axially positioned by the crimping ring groove 3.1. The circular arc rolling compression joint enables the front sleeve 1, the rear sleeve 2 and the jack pipe 3 to be integrated and can bear large plugging pull-out force. The crimping does not need high machining precision, so that the requirement on machining size precision of the jack is lowered.

One end of the rear sleeve 2 far away from the jack pipe 3 is provided with a fisheye structure 2.1, the fisheye structure 2.1 is used for being electrically connected with a printed board, and the patent with the patent application number of CN201710859612.X discloses the structure of the fisheye in detail, and the description is omitted here. The fisheye is in compression joint with the printed board, so that the problem that the impedance of the printed board at the through hole is not matched is solved.

In order to enhance the reliability of the electrical connection between the jack and the contact pin, five wire springs 4 are arranged on the inner wall of the jack tube 3, and the wire springs 4 extend outwards from two ends of the jack tube 3 and extend outwards along the radial direction; when one end of the outer circular surface of the jack pipe 3 is inserted into the inner wall of the front sleeve 1 and the other end is inserted into the inner wall of the rear sleeve 2, two ends of the wire spring wire 4 are bent and attached to the outer circular surface of the jack pipe 3 under the action of the inserting force, one end of the wire spring wire 4 is in compression joint between the outer circular surface of the jack pipe 3 and the inner wall of the front sleeve 1, and the other end of the wire spring wire 4 is in compression joint between the outer circular surface of the jack pipe 3 and the inner wall of the rear sleeve 2. The wire spring 4 has good contact elasticity and conductivity, and has the functions of increasing the contact force and the conductivity between the contact pin and the jack pipe 3 and increasing the contact force and the conductivity between the jack pipe 3 and the front sleeve 1 and the rear sleeve 2. By adopting the contact form of the wire spring wire 4, the jack has the characteristics of high vibration level, long plugging and unplugging service life, soft plugging and unplugging force, reliable contact element and small contact resistance.

And a conical step 2.2 for fixing the insulating sleeve is further arranged on the rear sleeve 2, and the outer diameter of one end, far away from the fisheye structure 2.1, of the conical step 2.2 is larger than that of one end, close to the fisheye structure 2.1, of the conical step. The structure makes the insulating sleeve easy to enter and difficult to exit. One end of the insulating sleeve is provided with a puncture hole, and the rear sleeve 2 is sleeved with the insulating sleeve in a mode of puncturing and piercing through a fish eye structure 2.1. The sleeve joint of the rear sleeve 2 and the insulating sleeve adopts the assembly technology with double characteristics of puncture and piercing, and the advantages of simple assembly, reliable fixation and no shaking are realized.

In order to prevent the axial movement of the jack tube 3 before crimping, an inner shaft shoulder 2.3 for preventing the axial movement of the jack tube 3 is arranged in the rear sleeve 2; an inner flange 1.1 used for preventing the jack pipe 3 from axially moving is arranged in the front sleeve 1, and an inner chamfer used for guiding a contact pin to enter the jack pipe 3 is arranged at one end, far away from the jack pipe 3, of the inner flange 1.1.

The present invention is not described in detail in the prior art. Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.