阅读说明：本技术 一种盲插式自锁连接器 (Blind-plugging self-locking connector ) 是由 杨海涛 王平 于 2019-10-14 设计创作，主要内容包括：本发明公开了一种盲插式自锁连接器,包括插头和插座；所述插头包括插头外壳,密封套套设于插头外壳外；插头外壳的右端设有第一台阶孔,钢珠放置于第一台阶孔内；插头绝缘子固定于插头外壳内,插头内导体固定于插头绝缘子内,接触头固定于插头外壳内并连接插头内导体；所述插座包括插座内导体,插座绝缘子套设于插座内导体外,插座外壳套设于插座绝缘子外,插座外壳的外壁中部设有插座凹槽。本发明采用钢珠自锁的形式,自锁紧后不需要辅助固定,且相对于现有的钢珠自锁连接器,体积更小,能够适应更多的操作环境。(The invention discloses a blind-mate self-locking connector, which comprises a plug and a socket, wherein the plug is provided with a plug hole; the plug comprises a plug shell, and the plug shell is sleeved with the sealing sleeve; a first step hole is formed in the right end of the plug shell, and the steel ball is placed in the first step hole; the plug insulator is fixed in the plug shell, the plug inner conductor is fixed in the plug insulator, and the contact is fixed in the plug shell and connected with the plug inner conductor in parallel; the socket comprises a socket inner conductor, a socket insulator is sleeved outside the socket inner conductor, a socket shell is sleeved outside the socket insulator, and a socket groove is formed in the middle of the outer wall of the socket shell. The invention adopts a steel ball self-locking mode, does not need auxiliary fixation after self-locking, has smaller volume compared with the existing steel ball self-locking connector, and can adapt to more operating environments.)

1. The blind-mate self-locking connector is characterized by comprising a plug and a socket;

the plug comprises a plug outer shell (5), and a sealing sleeve (8) is sleeved outside the plug outer shell (5); a first stepped hole (51) is formed in the right end of the plug shell (5), and the steel ball (9) is placed in the first stepped hole (51); the plug insulator (6) is fixed in the plug outer shell (5), the plug inner conductor (1) is fixed in the plug insulator (6), and the contact head (2) is fixed in the plug outer shell (5) and connected with the plug inner conductor (1) in parallel;

the socket comprises a socket inner conductor (11), the socket insulator (12) is sleeved outside the socket inner conductor (11), the socket shell (13) is sleeved outside the socket insulator (12), and a socket groove (131) is formed in the middle of the outer wall of the socket shell (13).

2. The blind-mate self-locking connector according to claim 1, wherein a locking sleeve (3) is arranged between the right end of the plug housing (5) and the sealing sleeve (8), and a plug groove (31) matched with the first stepped hole (51) is formed in the inner side of the right end of the locking sleeve (3); the lower part of the steel ball (9) is positioned in the plug groove (31), and the upper part of the steel ball is positioned in the first step hole (51); a slip ring limiting groove (32) is formed in the inner side of the left end of the locking sleeve (3), and a slip ring (10) capable of rolling is arranged in the slip ring limiting groove (32).

3. A blind mate self-locking connector according to claim 2, characterised in that the joint of the locking sleeve (3) and the sealing sleeve (8) is provided with mutually cooperating grooves.

4. The blind-mate self-locking connector according to claim 1, wherein a second stepped hole (52) is formed at the left side of the first stepped hole (51), and the first sealing ring (7) is disposed in the second stepped hole (52).

5. A blind mate self-locking connector according to claim 1, characterised in that the sealing sleeve (8) is fixed outside the plug housing (5) by a clamping ring (4).

6. Blind mate self-locking connector according to claim 1, characterised in that an elastic element (17) is provided under the steel ball (9).

7. The blind mate self-locking connector according to claim 1, wherein the left side wall of the socket groove (131) is inclined at an angle of 122.5 ° to 127.5 ° from the horizontal.

8. The blind-mate self-locking connector according to claim 1, wherein a projection is provided at the joint of the outer side of the left end of the housing (5) and the sealing sleeve (8).

9. The blind-mate self-locking connector according to claim 1, wherein the surface of the socket inner conductor (11) is provided with a knurled section, and the socket inner conductor (11) is connected with the socket insulator (12) in an interference fit manner; a second sealing ring (14) is arranged between the socket inner conductor (11) and the socket insulator (12); and a third sealing ring (15) is arranged between the socket shell (13) and the socket insulator (12).

10. The blind-mate self-locking connector according to claim 1, further comprising a multi-way plug flange (16), wherein the sealing sleeves (8) of the plurality of plugs are fixed on the multi-way plug flange (16).

Technical Field

The invention belongs to the technical field of electric connectors, and particularly relates to a blind-mate self-locking connector.

Background

With the continuous development and upgrading of wireless communication services, especially the sudden rush in recent decades, coaxial electrical connectors are also continuously developed and upgraded. The coaxial electric connector gradually evolves from a threaded type, a buckling type and a blind plugging type, has practical application value, and is convenient to replace and maintain. At present, the fast-plug self-locking coaxial connector is widely applied at home and abroad, and the fast-plug self-locking coaxial connector is a contact type fast-plug self-locking and coaxial electric connector and is most widely applied by QMA; the other is a steel ball type quick-insertion self-locking and coaxial electric connector, and adopts a locking mode of a pneumatic connector and a liquid cooling connector. Compared with a contact type coaxial electric connector, the steel ball type quick-insertion self-locking and coaxial electric connector has obvious advantages in the aspects of tensile falling resistance and reliability.

However, the existing steel ball type quick-insertion self-locking and coaxial electric connector mainly uses the matching of steel balls, springs and grooves required by locking as the design basis; the quick-insertion self-locking device has the advantages that when the quick-insertion self-locking device is used, the locking sleeve needs to be displaced in the opposite direction of the insertion direction in advance, the locking sleeve is pushed to extrude a steel ball into the groove through the counterforce of the spring after insertion is completed, quick-insertion self-locking is completed, and the locking sleeve is directly pulled to complete separation during separation; in the position with highly concentrated installation space, the locking sleeve is difficult to move reversely, which is not beneficial to installation operation; the existing steel ball type quick-insertion self-locking and coaxial electric connector is large in size and cannot be applied to places with narrow spaces. The connector mode similar to the threaded type and the buckling type single-way plugging can be realized only, and the way alignment and the plugging self-locking can not be realized simultaneously.

The existing multi-path blind-inspection connector mainly comprises two types: floating connectors (BMA, SBMA) and rigid connectors (SMP, SSMP), both of which require auxiliary fixation after multi-way mating, for example, generally require screw fixation after mating, increasing the assembly process; when the number of the insertion paths is too large, an auxiliary tool is needed for insertion and separation, the cost of early installation and later maintenance is high, and the process is complicated; and because of its fixed position limitation under the harsh vibration environment; the unpredictable circuit connection failure caused by the uncontrollable factors such as excessive relative displacement or material deformation can occur at individual positions.

Disclosure of Invention

The invention aims to provide a blind-mate self-locking connector to solve the problems in the prior art.

In order to achieve the purpose, the invention adopts the following technical scheme:

a blind-mate self-locking connector comprises a plug and a socket;

the plug comprises a plug shell, and the plug shell is sleeved with the sealing sleeve; a first step hole is formed in the right end of the plug shell, and the steel ball is placed in the first step hole; the plug insulator is fixed in the plug shell, the plug inner conductor is fixed in the plug insulator, and the contact is fixed in the plug shell and connected with the plug inner conductor in parallel;

the socket comprises a socket inner conductor, a socket insulator is sleeved outside the socket inner conductor, a socket shell is sleeved outside the socket insulator, and a socket groove is formed in the middle of the outer wall of the socket shell.

Furthermore, a locking sleeve is arranged between the right end of the plug shell and the sealing sleeve, and a plug groove matched with the first stepped hole is formed in the inner side of the right end of the locking sleeve; the lower part of the steel ball is positioned in the plug groove, and the upper part of the steel ball is positioned in the first step hole; the inner side of the left end of the locking sleeve is provided with a slip ring limiting groove, and a slip ring capable of rolling is arranged in the slip ring limiting groove.

Furthermore, the joint of the locking sleeve and the sealing sleeve is provided with grooves which are matched with each other.

Furthermore, a second stepped hole is formed in the left side of the first stepped hole, and the first sealing ring is arranged in the second stepped hole.

Furthermore, the sealing sleeve is fixed outside the plug housing by a press ring.

Furthermore, an elastic element is arranged below the steel ball.

Furthermore, the left side wall of the socket groove forms an included angle of 122.5-127.5 degrees with the horizontal direction, and the included angle is arranged in a chute.

Furthermore, a bulge is arranged at the joint of the outer side of the left end of the shell and the sealing sleeve.

Furthermore, a knurled section is arranged on the surface of the inner conductor of the socket, and the inner conductor of the socket is connected with the insulator of the socket in an interference fit mode; a second sealing ring is arranged between the socket inner conductor and the socket insulator; and a third sealing ring is arranged between the socket shell and the socket insulator.

Furthermore, the plug connector further comprises a multi-path plugging flange, and a plurality of sealing sleeves of the plug are fixed on the multi-path plugging flange.

The invention has the following beneficial effects:

1. according to the blind-mate self-locking connector, on the basis of ensuring high connection reliability and electric performance, the directions of insertion, separation and operation of the coaxial electric connector are completely consistent in the process of plugging, so that the defect of difficult operation in high-density installation is effectively overcome; meanwhile, a steel ball self-locking mode is adopted, so that the connector is smaller in size and can adapt to wide operating environments compared with the existing connector;

2. the blind-mate self-locking connector has the functions of single-way locking and multi-way blind-mate locking, and does not need tools for plugging and separating; auxiliary fixing is not needed after self-locking, and the single-path separating force is larger than 1000N, so that the problem of instantaneous interruption of an electric signal caused by the influence of vibration impact environment after multi-path blind detection is solved;

3. the sealing ring and the sealing sleeve arranged in the blind-mate self-locking connector ensure that the plug and the socket can safely, reliably and effectively complete the electric signal transmission function in any severe use environment (such as a seawater environment, an environment influenced by artificial or natural aggressive substances, an underwater environment and the like).

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 is a plug half-plane structure diagram of a blind-mate self-locking connector according to the present invention;

fig. 2 is a half plane structure diagram of a socket of a blind-mate type self-locking connector according to the present invention;

fig. 3 is a schematic diagram illustrating the insertion of the plug and the socket of the blind-mate self-locking connector according to the present invention;

fig. 4 is a schematic diagram of the separation of the plug and the socket of the blind-mate self-locking connector according to the present invention;

fig. 5 is a schematic diagram of a multi-path blind-mate structure of a blind-mate self-locking connector according to the present invention;

fig. 6 is a schematic view of a multi-way blind-mate appearance of a blind-mate self-locking connector according to the present invention;

FIG. 7 is a half-section structure view of a plug with an elastic element arranged below a steel ball of a blind-mate self-locking connector according to the present invention;

FIG. 8 is a socket structure view of the blind-mate type self-locking connector of the present invention with the socket groove being a chute;

wherein: the plug comprises a plug inner conductor 1, a contact 2, a locking sleeve 3, a pressing ring 4, a plug shell 5, a plug insulator 6, a first sealing ring 7, a sealing sleeve 8, a steel ball 9, a sliding ring 10, a socket inner conductor 11, a socket insulator 12, a socket shell 13, a second sealing ring 14, a third sealing ring 15, a multi-way plugging flange 16, an elastic element 17, a plug groove 31, a sliding ring limiting groove 32, a first step hole 51, a second step hole 52 and a socket groove 131.

Detailed Description

The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.

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

As shown in fig. 1, 2 and 7, the blind-mate self-locking connector comprises a plug and a socket;

the plug comprises a plug shell 5, and a sealing sleeve 8 is sleeved outside the plug shell 5; the right end of the plug shell 5 is provided with a first stepped hole 51, and the steel ball 9 is placed in the first stepped hole 51; the plug insulator 6 is fixed in the plug outer shell 5, the plug inner conductor 1 is fixed in the plug insulator 6, and the contact 2 is fixed in the plug outer shell 5 and connected with the plug inner conductor 1 in parallel;

the socket comprises a socket inner conductor 11, a socket insulator 12 is sleeved outside the socket inner conductor 11, a socket shell 13 is sleeved outside the socket insulator 12, and a socket groove 131 is formed in the middle of the outer wall of the socket shell 13. The surface of the socket inner conductor 11 is provided with a knurled section, and the socket inner conductor 11 is connected with the socket insulator 12 in an interference fit mode; a second sealing ring 14 is arranged between the socket inner conductor 11 and the socket insulator 12; a third seal ring 15 is provided between the socket housing 13 and the socket insulator 12.

A locking sleeve 3 is arranged between the right end of the plug shell 5 and the sealing sleeve 8, and a plug groove 31 matched with the first stepped hole 51 is arranged on the inner side of the right end of the locking sleeve 3; the lower part of the steel ball 9 is positioned in the plug groove 31, and the upper part is positioned in the first stepped hole 51; the inner side of the left end of the locking sleeve 3 is provided with a slip ring limiting groove 32, and a slip ring 10 capable of rolling is arranged in the slip ring limiting groove 32. The joint of the locking sleeve 3 and the sealing sleeve 8 is provided with grooves which are matched with each other. A second stepped hole 52 is formed in the left side of the first stepped hole 51, and the first seal ring 7 is arranged in the second stepped hole 52. The sealing sleeve 8 is fixed outside the plug housing 5 by a clamping ring 4.

As shown in fig. 7 and 8, an elastic element 17 is arranged below the steel ball 9, and an included angle between the left side wall of the socket groove 131 and the horizontal direction is 122.5 to 127.5 degrees, and the inclined groove is formed.

The tail part of the plug shell 5 is provided with a plurality of bulges to prevent liquid from flowing into the tail part of the plug; after the sealing sleeve 8 is inserted, the plug part is effectively isolated from the external environment; the first sealing ring 7 is attached to the socket shell 13 after the insertion, so that the front end is sealed; the plug inner conductor 1, the plug insulator 6 and the contact 2 realize the transmission of high-frequency signals after the plugging is finished; the front part of the right end of the plug shell 5 is provided with a plurality of step holes vertical to the axial line, and the steel balls 9 are placed in the first step holes 51 of the plug shell 5; the locking sleeve 3 is assembled with the plug shell 5 through a sliding ring 10 with certain radial elasticity; a plurality of grooves are arranged at the joint of the locking sleeve 3 and the sealing sleeve 8, and the locking sleeve and the sealing sleeve are tightly matched together; the left end tail part of the locking sleeve 3 is provided with a slip ring limiting groove 32, and the radial elasticity of the slip ring 10 can realize the front and back sliding only by overcoming a certain friction force; a knurled section and a second sealing ring 14 are arranged on the socket inner conductor 11, and the socket inner conductor 11 is assembled with the socket insulator 12 in an interference fit manner and is sealed; a third sealing ring 15 is arranged on the socket insulator 12 and assembled with the socket shell 13 to realize sealing; the socket housing 13 is provided with a socket recess 131 for locking.

The plugging principle of the blind-plugging self-locking connector is as follows:

as shown in fig. 3, during the insertion, the sealing sleeve 8 is pushed, after the contact 2 and the plug inner conductor 1 of the plug part are completely contacted with the socket inner conductor 11 and the socket housing 13 of the socket part, forward thrust is continuously applied to enable the slip ring 10 to roll in the slip ring limiting groove 32 by overcoming friction force, the sealing sleeve 8 drives the locking sleeve 3 to continuously move forward to push the steel ball 9 to move into the socket groove 131 formed in the socket housing 13 to complete locking, and the sealing sleeve 8 is tightly attached to the socket housing 13 through the first sealing ring 7 to complete integral sealing; the sealing sleeve 8 is pulled to enable the locking sleeve 3 to move backwards and the steel ball 9 falls back into the plug groove 31 of the locking sleeve 3, so that separation is completed.

The invention discloses a multi-path blind plugging principle of a blind plugging type self-locking connector, which comprises the following steps:

as shown in fig. 8, a multi-way opposite-insertion flange 16 is added on the sealing sleeve 8, and blind checking and self-locking during multi-way simultaneous opposite-insertion are realized by pushing or pulling. The insertion and separation mechanism of the multi-path electric connector is the same as that of a single path.

It will be appreciated by those skilled in the art that the invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The embodiments disclosed above are therefore to be considered in all respects as illustrative and not restrictive. All changes which come within the scope of or equivalence to the invention are intended to be embraced therein.