CN215221080U

CN215221080U - High-reliability subminiature rectangular straight socket electric connector

Info

Publication number: CN215221080U
Application number: CN202120599470.XU
Authority: CN
Inventors: 曾俊杰; 曾祥荣
Original assignee: Beijing Rongjun Kaiye Electronic Technology Co ltd
Current assignee: Beijing Rongjun Kaiye Electronic Technology Co ltd
Priority date: 2021-03-24
Filing date: 2021-03-24
Publication date: 2021-12-17
Anticipated expiration: 2031-03-24

Abstract

The utility model provides a high-reliability, straight formula socket electric connector of subminiature rectangle, include metal flange, irritate capsule and socket, the inside insulation board that is equipped with of socket, socket mouth department is equipped with seal gasket, insulation board surface equipartition is equipped with a plurality of terminals, a plurality of terminals run through metal flange, irritate capsule and socket and be connected with a plurality of pin one-to-ones, the output direction of terminal and pin is unanimous. The clavate pin type terminal can solve the technical problems that a twist pin contact pin provided by the background technology is formed by adopting multi-wire twisting, bump bulging and laser head bonding, is restricted by the process, has poor structural consistency and large discreteness of insertion and extraction force, is often compensated by adopting overlarge insertion and extraction force setting, has poor connection performance and is easy to damage an insertion alloy layer.

Description

High-reliability subminiature rectangular straight socket electric connector

Technical Field

The utility model relates to an electric connector technical field specifically is a high reliable, straight formula socket electric connector of subminiature rectangle.

Background

The technical development of light weight and miniaturization strongly needs the support of a subminiature rectangular electric connector with high reliability, while the development of the traditional domestic subminiature rectangular J63 type electric connector (the distance between terminals is 0.635mm) is not mature, the physical appearance of the subminiature rectangular J63 type electric connector borrows the import MIL-C-32139 standard, but the terminals use miniaturized 'twist needle' contact pins (8-wire twisting, bump and laser bonding head forming), so that J63 has the following two technical defects and poor reliability; secondly, the pins are densely arranged, the welding is difficult and the detection and the repair are difficult.

SUMMERY OF THE UTILITY MODEL

An object of the present invention is to provide a highly reliable, subminiature rectangular plug electrical connector, which employs a new microminiature terminal and a new electrical connector structure to solve all the problems proposed in the above background art. In order to achieve the above object, the utility model provides a following technical scheme:

the utility model discloses a straight formula socket product of high-reliability, subminiature electric connector, include a plurality of terminals, metal flange, irritate capsule and socket, the inside insulation board that is equipped with of socket, insulation board surface equipartition is equipped with a plurality of terminals, the terminal includes clavate contact pin type terminal, a plurality of terminals run through metal flange, irritate capsule and socket and be connected with a plurality of pin one-to-one, the output direction of terminal and pin is unanimous.

Preferably, the socket is of a rectangular but asymmetric structure, a sealing gasket is arranged at the opening of the socket, a metal O-shaped ring is arranged on one side, close to the socket, of the metal flange, and fastening pieces are symmetrically arranged on two sides of the socket on the metal flange.

Preferably, the potting shell is of a rectangular cavity structure, the potting shell is filled with the potting body, the potting body covers the rear section of the terminal and a part of the pins, the joint of the terminal and the pins is welded in a seamless mode, threaded holes III are symmetrically formed in the front side and the rear side of the lower end of the potting shell, a bottom step is arranged in the middle of the potting shell and plays a role in guiding and installing the PCB, the threaded holes III are used for fixing the connector and the PCB, and the pins are connected with a circuit on the PCB.

Preferably, the line spacing and the row spacing of the terminals are both 1.06mm, the line spacing of the pins is 1.50mm, and the row spacing of the pins is 1.27 mm.

Preferably, the rod-shaped pin-type terminal is of a cone head round rod-shaped structure and comprises a front section and a rear section, the front section is of a conical structure, and the head diameter of the front section is smaller than the bottom diameter; the rear section is of a round bar-shaped structure, the diameter of the rear section is larger than that of the front section, and a second pin mounting part for mounting the pins is arranged on the rear section.

Preferably, clavate contact pin type terminal is for dismantling the terminal, the right side of anterior segment is equipped with screw hole one, the junction of anterior segment and back end is equipped with dismounting device, dismounting device includes fixed cover, fixed cover right-hand member with back end fixed connection, the left end of fixed cover is equipped with the locating hole, the locating hole is used for the installation the anterior segment, the upper end of fixed cover is equipped with the counter bore, counter bore lower extreme intercommunication threaded hole two, threaded hole two with the locating hole intercommunication, threaded hole two with a threaded hole size equals and keeps same axle center.

Preferably, the fixing device further comprises a bar-shaped pin terminal, the fixing device comprising:

the fixing seat is arranged inside the socket, a plurality of mounting holes are uniformly distributed in the lower end face of the fixing seat, elastic pieces are symmetrically arranged on the left side and the right side of the upper end of each mounting hole, each elastic piece is arranged inside a limiting hole in the upper end of the fixing seat, each limiting hole is communicated with the corresponding mounting hole, fixing blocks are symmetrically arranged on the left side and the right side of each limiting hole, and a groove is formed between each fixing block and the corresponding fixing seat;

the set casing, the upper surface of set casing with insulation board fixed connection, set casing lower extreme left and right sides symmetry is equipped with the stopper, the stopper with the recess cooperation, set casing upper end equipartition is equipped with the conical head hole, conical head hole lower extreme intercommunication has the disassembly hole, the disassembly hole with spacing hole intercommunication.

Preferably, the recess passes through chucking device with the stopper and can dismantle the connection, chucking device includes the base, the base is fixed to be set up the inside of recess, the inside left and right sides symmetry of base is equipped with the elastic plate, elastic plate upper end fixedly connected with dop, the inside spring that is equipped with of base, the spring upper end with stopper lower extreme fixed connection, stopper lower extreme fixedly connected with fixture block, the spring housing is established the outside of fixture block and elastic plate, the fixture block lower extreme is equipped with the plush copper, the plush copper with the dop joint.

The technical solution of the present invention is further described in detail by the accompanying drawings and examples.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, 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 schematic structural view of the present invention;

fig. 2 is a bottom view of the potting case of the present invention;

fig. 3 is a schematic view of a bar-shaped pin type terminal according to the present invention;

fig. 4 is a schematic view of the detachable rod-shaped pin type terminal of the present invention;

fig. 5 is a schematic structural view of the fixing device of the present invention;

FIG. 6 is a schematic view of the fixing base of the present invention;

fig. 7 is a schematic structural view of the fixing shell of the present invention;

fig. 8 is a schematic view of the clamping structure of the present invention;

fig. 9 is a schematic view of the fixing sleeve structure of the present invention.

In the figure: 1. a terminal; 2. a fastener; 3. a metal flange; 4. encapsulating the filling material; 5. a socket; 501. sealing gaskets; 6. an insulating plate; 7. a pin; 8. a metal O-ring; 9. a bar-shaped pin-type terminal; 901. a front section; 9011. a first threaded hole; 902. a rear section; 10. a stationary case; 1001. a conical head hole; 1002. disassembling the hole; 11. a fixed seat; 1101. mounting holes; 1102. a limiting hole; 1103. a groove; 12. fixing a sleeve; 1201. a counter bore; 1202. positioning holes; 1203. a second threaded hole; 13. a fixed block; 14. an elastic sheet; 15. a limiting block; 16. a clamping block; 1601. a raised head; 17. a spring; 18. an elastic plate; 1801. clamping a head; 19. a base; 20. a third threaded hole; 21. a bottom step.

Detailed Description

The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are presented herein only to illustrate and explain the present invention, and not to limit the present invention.

In addition, the descriptions related to "first", "second", etc. in the present invention are only for description purposes, not specifically referring to the order or sequence, and are not intended to limit the present invention, but only to distinguish the components or operations described in the same technical terms, and are not to be construed as indicating or implying any relative importance or implicit indication of the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions and technical features between the various embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent, and is not within the protection scope of the present invention.

The utility model provides an embodiment as follows

Example 1

The embodiment of the utility model provides a high reliability, straight formula socket electric connector of subminiature rectangle, as shown in fig. 1-fig. 2, including a plurality of terminals 1, metal flange 3, embedment shell 4 and socket 5, the inside insulation board 6 that is equipped with of

socket

5, 6 surface equipartitions of insulation board are equipped with a plurality of terminals 1, terminal 1 includes clavate contact pin type terminal 9, a plurality of terminals 1 run through metal flange 3, embedment shell 4 and socket 5 are connected with a plurality of 7 one-to-one of pins, terminal 1 is unanimous with pin 7's output direction.

The beneficial effects of the above technical scheme are:

the insulating plate 6, the encapsulation shell 4, the encapsulation body and the like are used for fixing and protecting the terminal 1 and the pins 7 and preventing the damage of transportation and use; the socket 5 is used for matching a plug and a socket, the pin 7 is used for connecting an electric connector and a circuit on a PCB, the output direction of the pin 7 is the same as that of the terminal 1 so as to meet the use requirement of an application scene, the joint of the terminal 1 and the pin 7 adopts seamless welding, and compared with a crimping mode (combination of a round bar and a polygonal hole sleeve and multiple seams) commonly adopted by the existing product, the possibility of glue leakage during liquid resin encapsulation in the production process of the product can be completely eliminated, and the rod-shaped pin type terminal 9 can solve the technical problems that a twist pin provided by the background technology is formed by multi-wire twisting, bump and laser bonding of a head, is limited by the technology, has poor structural consistency of the twist pin and large insertion and extraction force discreteness, is often compensated by adopting too large insertion and extraction force, has poor connection performance and a gold insertion and extraction layer is easy to damage.

Example 2

On the basis of the above embodiment 1, as shown in fig. 1, the socket 5 is rectangular but has an asymmetric structure, a sealing gasket 501 is arranged at a port of the socket 5, a metal O-ring 8 is arranged on one side of the metal flange 3 close to the socket 5, the metal O-ring 8 is made of a stainless steel metal hose, fastening pieces 2 are symmetrically arranged on two sides of the socket 5 on the metal flange 3, and the fastening pieces 2 are nuts or screws.

The beneficial effects of the above technical scheme are:

the sealing gasket 501 is arranged at the position, close to the insulating plate 6, in the socket 5, so that no gap exists when the plug is in contact with the socket, the terminal 1 can be isolated from external water vapor after the plug and the socket are fixed, and the problem that the external water vapor cannot be isolated in a humid environment due to the fact that a gap is formed between the plug and the socket after the existing plug and socket are fixed is solved, the socket is in poor contact after long-term use, and safety accidents are easily caused; socket 5 designs for rectangle, asymmetric mouthful structural design, has effectively prevented that user's anti-inserting, increases this utility model's practicality, and user's anti-inserting probably causes the damage of socket, plug, and more serious is the connection error and the system damage of circuit. Metal O type circle 8 uses stainless steel metal collapsible tube's material preparation, and the embedding is installed on metal flange 3, utilizes its good elasticity, and the above-mentioned fastener 2 that is provided with the step uses of cooperation, can fill socket electric connector after being extruded and by the small clearance between mounting structure, improves metal flange 3 and by mounting structure's conductivity when realizing good EMC isolation, fastener 2 and the combination of screw on the plug guarantee that plug and socket are firmly connected and be unlikely to take place to break away from, when setting up the step on fastener 2, when realizing the connector and by mounting structure's fastening, extrusion metal O type circle 8 realizes following function with help it, increases this utility model's practicality.

Example 3

On the basis of the embodiment 1, as shown in fig. 2, the potting shell 4 has a rectangular cavity structure, a potting body is filled in the potting shell 4, the potting body covers the rear section 11 of the terminal 1 and a part of the pin 7, the joint of the terminal 1 and the pin 7 is welded in a seamless manner, three threaded holes 20 are symmetrically formed in the front side and the rear side of the lower end of the potting shell 4, a bottom step 21 is arranged in the middle of the potting shell 4, the bottom step 21 plays a role in guiding and mounting the PCB, the threaded holes three 20 are used for fixing the connector and the PCB, and the pin 7 is connected with a circuit on the PCB.

The beneficial effects of the above technical scheme are:

the terminal 1 and the pin 7 are combined to form a contact pair, the joint part of the terminal 1 and the pin 7 is arranged in the resin filling body, if a gap exists in the joint part, the gap position 'glue permeation' inevitably occurs during liquid resin encapsulation, so that abnormal conduction of the contact pair is directly caused or caused after shrinkage and expansion, the adopted combination mode of the terminal 1 and the pin 7 is welding, the terminal 1 and the pin 7 form seamless combination, compared with the combination and multi-seam of a round rod and a polygonal hole sleeve which are generally adopted in the existing product in a compression joint mode, the possibility of 'glue permeation' during liquid resin encapsulation in the production process of the product can be completely eradicated, two symmetrical threaded holes three 20 arranged on the encapsulation shell 4 are used for fixing the connector and the PCB to be installed, when in use, the connector and the PCB to be installed are fixed through the two threaded holes three 20 arranged on the encapsulation shell 4, then, pin welding is carried out, so that internal stress does not exist after the pin 7 is welded; the bottom step 21 is higher than the ground plane of the potting shell 4 and used for air circulation during welding of the pins 7 so as to ensure discharge of gas in soldering tin and avoid insufficient soldering, and the technical problems that the pins 7 are densely arranged and are difficult to weld and detect and repair in the background art are solved.

Example 4

On the basis of embodiment 1, as shown in fig. 1, the row pitch and the column pitch of the terminals 1 are both 1.06mm, the row pitch of the pins 7 is 1.50mm, and the column pitch of the pins 7 is 1.27 mm.

The beneficial effects of the above technical scheme are:

the arrangement pitch of the terminals 1 is 1.06 +/-0.02 mm, so that the volume of the electric connector is reduced to 25% of that of the conventional rectangular electric connector J30 (the terminal pitch is 1.27mm), and the microminiaturization of the electric connector is realized.

Example 5

On the basis of embodiment 1, as shown in fig. 3, the rod-shaped pin-type terminal 9 is a conical head round rod-shaped structure, and comprises a front section 901 and a rear section 902, wherein the front section 901 is a conical structure, and the head diameter of the front section 901 is smaller than the bottom diameter; the rear section 902 is a round bar structure, the diameter of which is larger than that of the front section 901, and the rear section 902 is provided with a second pin mounting part for mounting the pin 7.

The beneficial effects of the above technical scheme are:

the rod-shaped pin type terminal 9 changes the point contact of the existing twist pin into the annular contact matched with the terminal, so that the damage to the plating layer during the matching and the separation of the terminal can be effectively avoided, the damage to the plating layer during the matching and the separation of the terminal becomes one of the hidden fault sources of an equipment system, and the risk of system breakdown is caused by the terminal connection failure due to long-term corrosion.

Example 6

On the basis of embodiment 5, as shown in fig. 4, the rod-shaped pin-type terminal 9 is a detachable conical head, a first threaded hole 9011 is formed in the right side of the front section 901, a detaching device is arranged at the joint of the front section 901 and the rear section 902, the detaching device includes a fixing sleeve 12, the right end of the fixing sleeve 12 is fixedly connected with the rear section 902, a positioning hole 1202 is formed in the left end of the fixing sleeve 12, the positioning hole 1202 is used for mounting the front section 901, a counter bore 1201 is formed in the upper end of the fixing sleeve 12, a second threaded hole 1203 is communicated with the lower end of the counter bore 1201, the second threaded hole 1203 is communicated with the positioning hole 1202, and the second threaded hole 1203 and the first threaded hole 9011 have the same size and keep the same axis.

The beneficial effects of the above technical scheme are:

the screw is screwed into the screw hole II 1203 and the screw hole I9011, the fixing sleeve 12 is in threaded connection with the front section 901, the front section 901 is replaced through the adjusting screw, the front section 901 is extremely easy to wear after being used for a period of time, so that the charging effect is influenced, the worn front section 901 usually leads to the replacement of the whole clavate pin type terminal 9 due to the inconvenience in maintenance, the cost is increased, the counter bore 1201 enables the screw to be flush with the surface of the fixing sleeve 12, and the influence on the flatness of the outer surface of the clavate pin type terminal 9 due to the fact that the screw head protrudes out of the fixing sleeve 12 is avoided.

Example 7

On the basis of the above embodiment 5, as shown in fig. 5 to 7, there is further provided a fixing device of a bar-shaped pin-type terminal 9, the fixing device comprising:

the fixing seat 11 is arranged inside the socket 5, a plurality of mounting holes 1101 are distributed on the lower end face of the fixing seat 11, elastic pieces 14 are symmetrically arranged on the left side and the right side of the upper end of each mounting hole 1101, the elastic pieces 14 are arranged inside limiting holes 1102 in the upper end of the fixing seat 11, the limiting holes 1102 are communicated with the mounting holes 1101, fixing blocks 13 are symmetrically arranged on the left side and the right side of the limiting holes 1102, and a groove 1103 is formed between each fixing block 13 and the fixing seat 11;

set casing 10, the upper surface of set casing 10 with 6 fixed connection of insulation board, set casing 10 lower extreme left and right sides symmetry is equipped with stopper 15, stopper 15 with recess 1103 cooperation, the equipartition of set casing 10 upper end is equipped with conical head hole 1001, conical head hole 1001 lower extreme intercommunication has disassembly hole 1002, disassembly hole 1002 with spacing hole 1102 intercommunication.

The beneficial effects of the above technical scheme are:

firstly, the fixed shell 10 and the fixed seat 11 are connected together, the diameter of the mounting hole 1101 is equal to that of the fixed sleeve 12, when the bar-shaped pin type terminal 9 is mounted and fixed, the bar-shaped pin type terminal 9 is inserted from the mounting hole 1101, the fixed sleeve 12 enters the dismounting hole 1002 through the elastic sheet 14, the elastic sheet 14 is spread in the process, the elastic sheet 14 returns to the original position after the fixed sleeve 12 enters the dismounting hole 1002, the movement of the bar-shaped pin type terminal 9 in the direction of the mounting hole 1101 is limited, the bar-shaped pin type terminal is prevented from falling off from the fixed seat 11, the diameters of the front section 901 and the conical head hole 1001 are the same, the stability of the front section 901 is improved, the deformation of the front section 901 in the long-term plugging process is prevented, the fixed shell 10 can be dismounted when a new bar-shaped front section 901 is replaced, the whole pin type terminal 9 does not need to be taken out, the workload is reduced, and the replacement and the maintenance of the front section 901 is convenient.

Example 8

On the basis of above-mentioned embodiment 7, as shown in fig. 8-9, recess 1103 and stopper 15 pass through chucking device and can dismantle and be connected, chucking device includes base 19, base 19 is fixed to be set up the inside of recess 1103, the inside left and right sides symmetry of base 19 is equipped with elastic plate 18, elastic plate 18 upper end fixedly connected with dop 1801, the inside spring 17 that is equipped with of base 19, the spring 17 upper end with 15 lower extreme fixed connection of stopper, 15 lower extreme fixedly connected with fixture block 16 of stopper, the spring 17 cover is established the outside of fixture block 16 and elastic plate 18, fixture block 16 lower extreme is equipped with plush copper 1601, plush copper 1601 with dop 1801 joint.

The beneficial effects of the above technical scheme are:

when set casing 10 is connected with fixing base 11, promote set casing 10, make stopper 15 drive fixture block 16 downstream, during the contact of plush copper 1601 and the dop 1801 of the 18 upper ends of elastic plate at the 16 lower extreme of fixture block, elastic plate 18 separates to both sides, know plush copper 1601 breaks away from dop 1801 and gets into in the middle of the elastic plate 18, the lower terminal surface of set casing 10 contacts with the up end of fixing base 11 this moment, elastic plate 18 restores the normal position under the elastic action, it is spacing to cause the removal of plush copper 1601 vertical direction, make set casing 10 and fixing base 11 reach the purpose of dismantling the connection, the convenience is safeguarded operation such as change to clavate contact pin type terminal 9, the manpower is saved.

It will be apparent to those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims and their equivalents, the present invention is also intended to include such modifications and variations.

Claims

1. A high-reliability subminiature rectangular straight socket electric connector is characterized in that: including a plurality of terminals (1), metal flange (3), irritate capsule (4) and socket (5), socket (5) inside is equipped with insulation board (6), insulation board (6) surface equipartition is equipped with a plurality of terminals (1), terminal (1) includes clavate contact pin type terminal (9), a plurality of terminals (1) run through metal flange (3), irritate capsule (4) and socket (5) and be connected with a plurality of pins (7) one-to-one, the output direction of terminal (1) and pin (7) is unanimous.

2. A highly reliable, ultra-small rectangular straight receptacle electrical connector as defined in claim 1, wherein: socket (5) are but asymmetric structure for the rectangle, socket (5) port department is equipped with seal gasket (501), metal flange (3) are close to one side of socket (5) is equipped with metal O type circle (8), metal flange (3) are gone up the bilateral symmetry of socket (5) is equipped with fastener (2).

3. A highly reliable, ultra-small rectangular straight receptacle electrical connector as defined in claim 1, wherein: irritate capsule (4) and be the rectangle cavity structure, it is filled with the encapsulation body to irritate capsule (4) intussuseption, the encapsulation body covers the back end of terminal (1) and a part of pin (7), terminal (1) with the junction of pin (7) adopts seamless welding, it is equipped with screw hole three (20) to irritate bilateral symmetry around capsule (4) lower extreme, it is equipped with bottom step (21) to irritate capsule (4) middle part, bottom step (21) play the direction installation effect to PCB, screw hole three (20) are used for the fixed of connector and PCB, pin (7) and the circuit connection on the PCB.

4. A highly reliable, ultra-small rectangular straight receptacle electrical connector as defined in claim 1, wherein: the row spacing and the column spacing of the plurality of terminals (1) are both 1.06mm, the row spacing of the plurality of pins (7) is 1.50mm, and the column spacing of the plurality of pins (7) is 1.27 mm.

5. A highly reliable, ultra-small rectangular straight receptacle electrical connector as defined in claim 1, wherein: the rod-shaped pin type terminal (9) is of a conical head round rod-shaped structure and comprises a front section (901) and a rear section (902), the front section (901) is of a conical structure, and the diameter of the head of the front section (901) is smaller than that of the bottom; the rear section (902) is of a round bar-shaped structure, the diameter of the rear section is larger than that of the front section (901), and a second pin mounting part for mounting the pin (7) is arranged on the rear section (902).

6. A highly reliable, ultra-small rectangular straight receptacle electrical connector as defined in claim 5, wherein: the clavate pin type terminal (9) is a detachable terminal, a first threaded hole (9011) is formed in the right side of the front section (901), a detaching device is arranged at the joint of the front section (901) and the rear section (902), the detaching device comprises a fixing sleeve (12), the right end of the fixing sleeve (12) is fixedly connected with the rear section (902), a positioning hole (1202) is formed in the left end of the fixing sleeve (12), the positioning hole (1202) is used for installing the front section (901), a counter bore (1201) is formed in the upper end of the fixing sleeve (12), a second threaded hole (1203) is communicated with the lower end of the counter bore (1201), the second threaded hole (1203) is communicated with the positioning hole (1202), and the second threaded hole (1203) is equal to the first threaded hole (9011) in size and keeps the same axis.

7. A highly reliable, ultra-small rectangular straight receptacle electrical connector as defined in claim 5, wherein: also included is a fixing device for a bar-shaped pin-type terminal (9), the fixing device comprising:

the fixing seat (11) is arranged inside the socket (5), a plurality of mounting holes (1101) are distributed on the lower end face of the fixing seat (11), elastic pieces (14) are symmetrically arranged on the left side and the right side of the upper end of each mounting hole (1101), the elastic pieces (14) are arranged inside limiting holes (1102) in the upper end of the fixing seat (11), the limiting holes (1102) are communicated with the mounting holes (1101), fixing blocks (13) are symmetrically arranged on the left side and the right side of each limiting hole (1102), and a groove (1103) is formed between each fixing block (13) and the fixing seat (11);

set casing (10), the upper surface of set casing (10) with insulation board (6) fixed connection, set casing (10) lower extreme left and right sides symmetry is equipped with stopper (15), stopper (15) with recess (1103) cooperation, the equipartition is equipped with conical head hole (1001) on set casing (10), conical head hole (1001) lower extreme intercommunication has disassembly hole (1002), disassembly hole (1002) with spacing hole (1102) intercommunication.

8. A highly reliable, ultra-small rectangular straight receptacle electrical connector as defined in claim 7, wherein: recess (1103) can be dismantled with stopper (15) and be connected through chucking device, chucking device includes base (19), base (19) are fixed to be set up the inside of recess (1103), the inside left and right sides symmetry of base (19) is equipped with elastic plate (18), elastic plate (18) upper end fixedly connected with dop (1801), base (19) inside is equipped with spring (17), spring (17) upper end with stopper (15) lower extreme fixed connection, stopper (15) lower extreme fixedly connected with fixture block (16), spring (17) cover is established the outside of fixture block (16) and elastic plate (18), fixture block (16) lower extreme is equipped with plush copper (1601), plush copper (1601) with dop (1801) joint.