CN213243038U

CN213243038U - Automatic limiting device for electronic mechanical port

Info

Publication number: CN213243038U
Application number: CN202021735146.8U
Authority: CN
Inventors: 刘文程; 王哲; 姚晶晶; 冯琪
Original assignee: Zhijiang College of ZJUT
Current assignee: Zhijiang College of ZJUT
Priority date: 2020-08-19
Filing date: 2020-08-19
Publication date: 2021-05-18
Anticipated expiration: 2030-08-19

Abstract

The utility model discloses an automatic limiting device for an electronic mechanical port, which comprises an external connecting piece, an electronic mechanical element, a connecting mechanism, an anti-deviation mechanism and a protecting mechanism, wherein the external connecting piece is connected with the electronic mechanical element through the connecting mechanism, the anti-deviation mechanism is arranged between the external connecting piece and the electronic mechanical element, one side of the external connecting piece close to the electronic mechanical element is provided with the protecting mechanism, the movable block compresses a spring by pushing the movable block, the movable block loses the restraint on a clamping bead below in the sliding process of the movable block, the external connecting end is moved and installed outside an internal connecting end, a needle seat is connected with a contact pin, the clamping bead is moved to a groove, then the movable block is not pushed any more, the movable block is reset under the action of the spring, and the clamping bead is fixed at the groove through the inner wall of the movable block, the connection between the external connection member and the electromechanical component.

Description

Automatic limiting device for electronic mechanical port

Technical Field

The invention belongs to the technical field of electronic machinery, and particularly relates to an automatic limiting device for an electronic machinery port.

Background

The electronic mechanical port is composed of a plastic shell, a contact pin on a PCB and a plastic positioning hook, wherein the contact pin is a functional PI N pin and is mainly used for supplying power to other circuit boards or electrically connecting with other signal communication ports, the plastic shell is used for fixing the contact pin and a carrier which is convenient for connecting the plastic shell with other electronic mechanical ports, and the plastic positioning hook is used for positioning the placing direction of the electronic mechanical port and preventing the plastic shell from deforming or shifting and other problems when other electronic mechanical ports are inserted.

The connection limiting mode of the electromechanical port is generally realized by connecting the hook arranged on the plastic shell with the external port, so that the electromechanical port is correspondingly connected, and the connection of the electromechanical element and the external equipment is realized after the port is firmly connected and fixed.

The existing device has the following defects:

1. the bolt is adopted for limiting, the operation steps are complex, and the positions of two groups of screw holes need to be accurately positioned;

2. when the ports are separated, a horizontal pulling-out mode is not adopted, so that the contact pins are easily damaged;

3. when the ports are connected, the elastic piece arranged on one group of ports is easy to damage the shell of the other group of ports.

Disclosure of Invention

To solve at least one of the problems set forth in the background art described above. The invention provides an automatic limiting device for an electromechanical port.

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides an automatic defining device of electron machinery port, includes outer connecting piece, electron mechanical component, coupling mechanism, prevents deviating from mechanism and protection mechanism, its characterized in that: the outer connecting piece is connected with the electronic mechanical element through a connecting mechanism, an anti-deviation mechanism is arranged between the outer connecting piece and the electronic mechanical element, and a protection mechanism is arranged on one side, close to the electronic mechanical element, of the outer connecting piece.

As a further improvement of the above technical solution, the connecting mechanism includes an inner connecting end, a needle seat, a groove, an outer connecting end, a needle, a limiting groove, a clamping ball, a movable block, a spring and a fixing plate, the inner connecting end is fixed at one end of the outer connecting piece close to the electromechanical component, a plurality of needle seats are arranged inside the inner connecting end, the grooves are arranged at the upper and lower ends of the outer side of the inner connecting end, the outer connecting end is fixed at one end of the electromechanical component close to the outer connecting end, the outer connecting end is installed at the outer side of the inner connecting end, the needle is arranged inside the outer connecting end, the limiting groove is arranged at the upper and lower ends of the outer connecting end, the clamping ball is installed inside the limiting groove, the movable block is connected to the outer connecting end in a sliding manner, one side of the movable block is connected with, the fixing plate is disposed on the outer connection end.

As a further improvement of the above technical solution, the external dimension of the inner connecting end is the same as the internal dimension of the outer connecting end, a detachable structure is formed between the inner connecting end and the outer connecting end, and the clamping beads are mounted inside the grooves vertically arranged on the inner connecting end.

As a further improvement of the technical scheme, a plurality of groups of limiting grooves are arranged at the upper end and the lower end of the outer connecting end at equal intervals, each group of limiting grooves is internally and movably provided with clamping beads, the maximum diameter of each clamping bead is larger than the minimum diameter of each limiting groove, and the clamping beads are movably connected with the outer connecting end through the limiting grooves.

As a further improvement of the technical scheme, the inner size of the movable block is the same as the outer size of the outer connecting end, a sliding structure is formed between the movable block and the outer connecting end, and the movable block and the fixed plate form a telescopic structure through a spring.

As a further improvement of the technical scheme, the deviation preventing mechanism comprises a connecting block, a first correcting hole, a convex block and a second correcting hole, a plurality of groups of connecting blocks are vertically fixed on the side face of the outer connecting piece, the first correcting hole is formed in the four corners of the movable block, the convex block is fixed on the two sides of the movable block, the second correcting hole is formed in the four corners of the fixed plate, and one end of the connecting block penetrates through the first correcting hole and the second correcting hole.

As a further improvement of the above technical scheme, the outer connecting member and the connecting blocks are of an integrated structure, the side face of one end of each connecting block is semicircular, four groups of the connecting blocks are arranged, and the connecting blocks are pairwise symmetrical about the central axis of the outer connecting member.

As a further improvement of the above technical solution, the cross-sectional shape of the connecting block is rectangular, the cross-sectional dimension of the connecting block is the same as the dimensions of the first correction hole and the second correction hole, and the outer connecting member and the electromechanical component are horizontally slidably connected.

As a further improvement of the above technical scheme, the protection mechanism includes a clamping groove, a rubber pad, through holes and convex particles, the clamping groove is formed in one side of the outer connecting piece, a connecting block is fixed in the clamping groove, four groups of through holes are formed in the rubber pad, the rubber pad passes through the through holes and is installed on the connecting block, the rubber pad is installed in the clamping groove, the convex particles are arranged on the rubber pad, and the convex particles are tightly attached to the side faces of the movable blocks.

As a further improvement of the technical scheme, the area of the rubber pad is larger than the area of the side face of the movable block, and a detachable structure is formed between the rubber pad and the outer connecting piece.

Compared with the prior art, the invention has the beneficial effects that:

the invention discloses an automatic limiting device of an electronic mechanical port, which comprises an external connecting piece, an electronic mechanical element, a connecting mechanism, an anti-deviation mechanism and a protection mechanism, wherein the external connecting piece is connected with the electronic mechanical element through the connecting mechanism, the anti-deviation mechanism is arranged between the external connecting piece and the electronic mechanical element, and the protection mechanism is arranged on one side of the external connecting piece, which is close to the electronic mechanical element.

1. The connecting mechanism is arranged between the external connecting piece and the electronic mechanical element, so that the external connecting piece and the electronic mechanical element can be connected and assembled together more conveniently and quickly, and the operation steps are simple;

2. through the arrangement of the deviation preventing mechanism, when the external connecting piece and the electronic mechanical element are separated, the external connecting piece and the electronic mechanical element can be horizontally separated, and the contact pins arranged on the external connecting piece and the electronic mechanical element cannot be damaged;

3. by means of the protection mechanism arranged on the outer connecting piece, when the outer connecting piece and the electronic mechanical element are connected and assembled, the outer shells of the outer connecting piece and the electronic mechanical element cannot be damaged due to direct contact collision, and the device is protected.

Drawings

The accompanying drawings, which 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 principles of the invention and not to limit the invention. In the drawings:

FIG. 1 is a schematic perspective view of the present invention;

FIG. 2 is a schematic view of an external connecting member and an electronic mechanical component assembly according to the present invention;

FIG. 3 is a schematic view of an end of the external connector of the present invention;

FIG. 4 is a schematic view of an end structure of the electromechanical device of the present invention;

FIG. 5 is a schematic diagram of a structure of the movable block in a contracted state according to the present invention.

In the figure: 1. an outer connecting member; 2. an electromechanical element; 3. a connecting mechanism; 301. an inner connection end; 302. A needle seat; 303. a groove; 304. an outer connecting end; 305. inserting a pin; 306. a limiting groove; 307. clamping the beads; 308. a movable block; 309. a spring; 310. a fixing plate; 4. an anti-deviation mechanism; 401. connecting blocks; 402. a first correction hole; 403. a bump; 404. a second correction hole; 5. a protection mechanism; 501. a card slot; 502. a rubber pad; 503. a through hole; 504. and (5) convex particles.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the embodiments of the present invention, it should be understood that the terms "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing embodiments of the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the embodiments of the present invention.

The electronic mechanical port is composed of a plastic shell, a contact PIN on a PCB and a plastic positioning clamping hook, wherein the contact PIN is a functional PIN PIN and is mainly used for supplying power to other circuit boards or electrically connecting with other signal communication ports, the plastic shell is used for fixing the contact PIN and facilitating the connection of the contact PIN with other electronic mechanical ports, and the plastic positioning clamping hook is used for positioning the placing direction of the electronic mechanical port and preventing the plastic shell from deforming or shifting and other problems when other electronic mechanical ports are inserted.

The existing device has the following defects:

Therefore, the embodiment of the invention provides an automatic limiting device for an electronic mechanical port, which has the advantages of simple operation steps, difficult damage of a contact pin during use and difficult damage of a port shell.

Hereinafter, the automatic limiting device for an electromechanical port according to the embodiment of the present invention will be described in detail with reference to fig. 1 to 5.

Referring to fig. 1-5, the present invention provides the following technical solutions: an automatic limiting device for an electronic mechanical port comprises an outer connecting piece 1, an electronic mechanical element 2, a connecting mechanism 3, an anti-deviation mechanism 4 and a protection mechanism 5, wherein the outer connecting piece 1 is connected with the electronic mechanical element 2 through the connecting mechanism 3, the anti-deviation mechanism 4 is arranged between the outer connecting piece 1 and the electronic mechanical element 2, and the protection mechanism 5 is arranged on one side, close to the electronic mechanical element 2, of the outer connecting piece 1.

In this embodiment: through at external connector 1, coupling mechanism 3 that sets up between electromechanical component 2, make external connector 1, electromechanical component 2 can be more simple and convenient swift connection equipment together, operation steps are simple, through the setting of preventing deviating mechanism 4, make external connector 1, electromechanical component 2 is when carrying out the separation operation, can make external connector 1, horizontal separation between electromechanical component 2, and then make external connector 1, it can not damage to set up contact pin 305 on electromechanical component 2, with the help of protection mechanism 5 that sets up on external connector 1, make external connector 1, electromechanical component 2 is when carrying out the connection equipment, external connector 1, electromechanical component 2's shell can not lead to damaging because of direct contact collision, play the guard action to the device.

Further, the connecting mechanism 3 includes an inner connecting end 301, a needle seat 302, a groove 303, an outer connecting end 304, a pin 305, a limiting groove 306, a clamping ball 307, a movable block 308, a spring 309 and a fixing plate 310, the inner connecting end 301 is fixed at one end of the outer connecting member 1 close to the electronic mechanical element 2, a plurality of groups of needle seats 302 are arranged inside the inner connecting end 301, the grooves 303 are arranged at the upper and lower ends of the outer side of the inner connecting end 301, the outer connecting end 304 is fixed at one end of the electronic mechanical element 2 close to the outer connecting member 1, the outer connecting end 304 is installed at the outer side of the inner connecting end 301, the pin 305 is arranged inside the outer connecting end 304, the limiting groove 306 is arranged at the upper and lower ends of the outer connecting end 304, the clamping ball 307 is installed inside the limiting groove 306, the movable block 308 is slidably connected on the outer connecting end 304, the fixed plate 310 is arranged on the outer connecting end 304, the movable block 308 is enabled to compress the spring 309 by pushing the movable block 308, in the sliding process of the movable block 308, the movable block 308 loses the restraint on the lower clamping bead 307, the outer connecting end 304 is further movably installed outside the inner connecting end 301, the needle base 302 is connected with the inserting needle 305, the clamping bead 307 is further enabled to move to the groove 303, then the movable block 308 is not pushed any more, the movable block 308 is enabled to reset under the action of the spring 309, the clamping bead 307 is further enabled to be fixed at the groove 303 through the inner wall of the movable block 308, and the outer connecting piece 1 is connected with the electronic mechanical element 2.

Further, the external dimension of the inner connecting end 301 is the same as the internal dimension of the outer connecting end 304, a dismounting structure is formed between the inner connecting end 301 and the outer connecting end 304, a clamping bead 307 is mounted inside a groove 303 formed in the upper portion and the lower portion of the inner connecting end 301, the outer connecting end 304 is movably mounted outside the inner connecting end 301, the needle base 302 is connected with the inserting needle 305, the clamping bead 307 is further moved to the position of the groove 303, the clamping bead 307 is limited, the clamping bead 307 is partially fixed in the groove 303, and the inner connecting end 301 is fixedly connected with the outer connecting end 304.

Further, both ends equidistance is provided with multiunit spacing groove 306 about outer link 304, the equal movable mounting in inside of every group spacing groove 306 has card pearl 307, the maximum diameter of card pearl 307 is greater than the minimum diameter of spacing groove 306, card pearl 307 is swing joint through between spacing groove 306 and the outer link 304, through sliding movable block 308, change movable block 308 to the limited direction of card pearl 307, and simultaneously, the position of spacing groove 306, make card pearl 307 under the condition that can move about, can not break away from spacing groove 306 inside again.

Further, the inside dimension of the movable block 308 is the same as the outside dimension of the outer connecting end 304, a sliding structure is formed between the movable block 308 and the outer connecting end 304, the movable block 308 forms a telescopic structure through a spring 309 and a fixing plate 310, the movable block 308 is made to compress the spring 309 by pushing the movable block 308, the movable block 308 is made to slide on the outer connecting end 304, the distance between the movable block 308 and the fixing plate 310 is further changed, and the movable block 308 can automatically reset after losing external force by means of the spring 309.

Further, the deviation-preventing mechanism 4 comprises a connecting block 401, a first correcting hole 402, a bump 403 and a second correcting hole 404, wherein a plurality of groups of connecting blocks 401 are vertically fixed on the side surface of the outer connecting member 1, the first correcting hole 402 is arranged at the four corners of the movable block 308, the bump 403 is fixed on the two sides of the movable block 308, the second correcting hole 404 is arranged at the four corners of the fixing plate 310, one end of the connecting block 401 penetrates through the first correcting hole 402 and the second correcting hole 404, the deviation-preventing mechanism 4 is arranged between the outer connecting member 1 and the electromechanical element 2, when the outer connecting member 1 and the electromechanical element 2 are separated, the movable block 308 compresses the spring 309 by pulling the bump 403, finally the fixing plate 310 is driven, the electromechanical element 2 horizontally slides on the inner connecting end 301 through the outer connecting end 304, under the correcting action of the first correcting hole 402 and the second correcting hole 404, the electronic mechanical element 2 slides in parallel with the connecting block 401 all the time, so that the situation that the contact pin 305 is damaged due to improper separation angle of the external connecting piece 1 and the electronic mechanical element 2 is avoided.

Further, formula structure as an organic whole between external connection spare 1 and the connecting block 401, connecting block 401's one end side shape is semicircle form, connecting block 401 is provided with four groups, connecting block 401 is two bisymmetry about external connection spare 1's axis, through setting up multiunit connecting block 401, make the connection face between external connection spare 1 and the electromechanical component 2 more, ensure that electromechanical component 2 is in the gliding state, and simultaneously, connecting block 401's one end adopts semicircle column structure to set up, make connecting block 401 can be more convenient pass first correction hole 402 and second correction hole 404.

Further, the cross section of the connecting block 401 is rectangular, the cross section of the connecting block 401 is the same as the first correction hole 402 and the second correction hole 404, the outer connecting piece 1 and the electromechanical element 2 are in horizontal sliding connection, the electromechanical element 2 can finally slide horizontally on the inner connecting end 301 through the outer connecting end 304 by means of the matching of the first correction hole 402 and the second correction hole 404 with the connecting block 401 in the pulling lug 403 mode, and therefore the outer connecting piece 1 and the electromechanical element 2 are prevented from being separated at an inclined angle, and further the inserting pin 305 is guaranteed not to be damaged.

Further, the protection mechanism 5 comprises a clamping groove 501, a rubber pad 502, a through hole 503 and convex particles 504, the clamping groove 501 is formed in one side of the external connecting member 1, a connecting block 401 is fixed in the clamping groove 501, four groups of through holes 503 are formed in the rubber pad 502, the rubber pad 502 is installed on the connecting block 401 through the through holes 503, the rubber pad 502 is installed in the clamping groove 501 in a fitting manner, the convex particles 504 are arranged on the rubber pad 502, the convex particles 504 are tightly attached to the side surface of the movable block 308, the rubber pad 502 is installed on the connecting block 401 through the through holes 503 formed in the rubber pad 502, then the rubber pad 502 is installed and attached to the side surface of the external connecting member 1 through sliding, when the movable block 308 is automatically reset by means of the spring 309, the movable block 308 is prevented from directly contacting the external connecting member 1 through the rubber pad 502, the external, the impulsive force generated when the movable block 308 is reset can be reduced, and the damage of the outer connecting piece 1 caused by collision can be avoided.

Further, the area of rubber pad 502 is greater than movable block 308 side area, constitutes detachable construction between rubber pad 502 and the external connecting piece 1, and the size area of rubber pad 502 sets up, when making movable block 308 with the help of spring 309 automatic re-setting, movable block 308 passes through rubber pad 502 and keeps apart completely, can not with external connecting piece 1 surface contact, protects external connecting piece 1, simultaneously, can take the mode of quantitative change rubber pad 502, ensures that rubber pad 502 protects external connecting piece 1 under the condition of damaging.

The working principle and the using process of the invention are as follows: firstly, a through hole 503 arranged on a rubber pad 502 is arranged on a connecting block 401, then the rubber pad 502 is arranged and attached to the side surface of an external connecting piece 1 by sliding the rubber pad 502, the installation of the rubber pad 502 is completed, then the connecting block 401 arranged at one side of the external connecting piece 1 is aligned with a first correction hole 402 and a second correction hole 404 for assembly, the external connecting piece 1 and an electronic mechanical element 2 are preliminarily assembled, the electronic mechanical element 2 is continuously pushed, a contact pin 305 arranged inside an external connecting end 304 is connected with a needle base 302, then the movable block 308 is pushed to compress a spring 309, the movable block 308 loses the restraint on a lower clamp bead 307 in the sliding process of the movable block 308, the external connecting end 304 is movably arranged outside the internal connecting end 301, the needle base 302 is completely connected with the contact pin 305, and the clamp bead 307 moves to a groove 303, then no longer promote movable block 308, make movable block 308 reset under the effect of spring 309, and then make card pearl 307 fix in recess 303 department through the inner wall of movable block 308, make and be connected between external connecting piece 1 and the electromechanical component 2, when movable block 308 resets under the effect of spring 309, movable block 308 slides on external connection end 304, avoid movable block 308 direct contact external connecting piece 1 through rubber pad 502, and then play the guard action to external connecting piece 1, simultaneously at evenly distributed's protruding grain 504, can reduce the impulsive force that the movable block 308 produced when reseing, avoid external connecting piece 1 because of the collision impaired, accomplish the equipment connection of external connecting piece 1 and electromechanical component 2.

Therefore, the automatic limiting device for the electromechanical port of the embodiment of the invention mainly comprises an external connecting piece 1, an electromechanical element 2, a connecting mechanism 3, an anti-deviation mechanism 4 and a protection mechanism 5, wherein the external connecting piece 1 is connected with the electromechanical element 2 through the connecting mechanism 3, the anti-deviation mechanism 4 is arranged between the external connecting piece 1 and the electromechanical element 2, and the protection mechanism 5 is arranged on one side of the external connecting piece 1, which is close to the electromechanical element 2. The movable block is pushed to compress the spring, and in the sliding process of the movable block, the movable block loses the restraint on the clamping bead below the movable block, so that the outer connecting end is movably arranged outside the inner connecting end, the needle base is connected with the contact pin, the clamping bead is moved to the groove, the movable block is not pushed any more, the movable block is reset under the action of the spring, the clamping bead is fixed at the groove through the inner wall of the movable block, and the outer connecting piece is connected with the electronic mechanical element; the movable block compresses the spring by pulling the convex block, and finally, the fixed plate is driven, so that the electronic mechanical element horizontally slides on the inner connecting end through the outer connecting end, and under the action of the first correction hole and the second correction hole, the electronic mechanical element always slides in parallel with the connecting block, and the situation that the contact pin is damaged due to improper separation angle of the outer connecting piece and the electronic mechanical element is avoided; through-hole of seting up on the rubber pad is installed it on the connecting block, then through sliding to the rubber pad, make the rubber pad installation laminating in the side of external connection spare, when the movable block is with the help of spring automatic re-setting, avoid movable block direct contact external connection spare through the rubber pad, and then play the guard action to the external connection spare, at evenly distributed's protruding grain simultaneously, the impulsive force that produces when can reducing the movable block and reseing avoids the external connection spare impaired because of the collision.

In the description of the present invention, the terms "first", "second", "another", and "yet" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of the embodiments of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, e.g., as being fixed or detachable or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art. In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.

While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. An automatic limiting device for an electromechanical port comprises an external connecting piece (1), an electromechanical element (2), a connecting mechanism (3), an anti-deviation mechanism (4) and a protection mechanism (5), and is characterized in that: the outer connecting piece (1) is connected with the electronic mechanical elements (2) through a connecting mechanism (3), an anti-deviation mechanism (4) is arranged between the outer connecting piece (1) and the electronic mechanical elements (2), and a protection mechanism (5) is arranged on one side, close to the electronic mechanical elements (2), of the outer connecting piece (1).

2. The electro-mechanical port auto-limiting device of claim 1, wherein: the connecting mechanism (3) comprises an inner connecting end (301), needle seats (302), grooves (303), an outer connecting end (304), inserting needles (305), limiting grooves (306), clamping beads (307), movable blocks (308), springs (309) and a fixing plate (310), wherein the inner connecting end (301) is fixed at one end, close to the electronic mechanical element (2), of the outer connecting piece (1), a plurality of groups of needle seats (302) are arranged inside the inner connecting end (301), the grooves (303) are formed at the upper end and the lower end of the outer side of the inner connecting end (301), the outer connecting end (304) is fixed at one end, close to the outer connecting piece (1), of the electronic mechanical element (2), the outer connecting end (304) is installed at the outer side of the inner connecting end (301), the inserting needles (305) are arranged inside the outer connecting end (304), the limiting grooves (306) are formed at the upper end and the lower end of the outer connecting, the internally mounted of spacing groove (306) has card pearl (307), sliding connection has movable block (308) on outer joint end (304), one side of movable block (308) is connected with spring (309), the other end of spring (309) is connected the side of fixed plate (310), fixed plate (310) set up on outer joint end (304).

3. The electro-mechanical port auto-definition device of claim 2, wherein: the external size of the inner connecting end (301) is the same as the internal size of the outer connecting end (304), a dismounting structure is formed between the inner connecting end (301) and the outer connecting end (304), and the clamping beads (307) are mounted in the grooves (303) which are vertically arranged on the inner connecting end (301).

4. The electro-mechanical port auto-definition device of claim 2, wherein: the utility model discloses a spacing groove (306), including outer link (304), both ends equidistance is provided with the multiunit about outer link (304) spacing groove (306), every group the equal movable mounting in inside of spacing groove (306) has card pearl (307), the maximum diameter of card pearl (307) is greater than the minimum diameter of spacing groove (306), card pearl (307) pass through spacing groove (306) with be swing joint between outer link (304).

5. The electro-mechanical port auto-definition device of claim 2, wherein: the inner size of the movable block (308) is the same as the outer size of the outer connecting end (304), a sliding structure is formed between the movable block (308) and the outer connecting end (304), and the movable block (308) and the fixing plate (310) form a telescopic structure through a spring (309).

6. The electro-mechanical port auto-limiting device of claim 1, wherein: prevent deviating mechanism (4) including connecting block (401), first correction hole (402), lug (403) and second correction hole (404), the side vertical fixation of outer connecting piece (1) has multiunit connecting block (401), the four corners department at movable block (308) is seted up in first correction hole (402), the both sides at movable block (308) are fixed in lug (403), the four corners department at fixed plate (310) is seted up in second correction hole (404), the one end of connecting block (401) is run through the setting and is in first correction hole (402) with the inside of second correction hole (404).

7. The electro-mechanical port auto-limiting device of claim 6, wherein: outer connecting piece (1) with formula structure as an organic whole between connecting block (401), the one end side shape of connecting block (401) is the semicircle form, connecting block (401) are provided with four groups, connecting block (401) about two bisymmetry in the axis of outer connecting piece (1).

8. The electro-mechanical port auto-limiting device of claim 6, wherein: the cross section of the connecting block (401) is rectangular, the cross section of the connecting block (401) is the same as the first correction hole (402) and the second correction hole (404), and the outer connecting piece (1) is horizontally connected with the electromechanical element (2) in a sliding mode.

9. The electro-mechanical port auto-limiting device of claim 1, wherein: protection mechanism (5) are including draw-in groove (501), rubber pad (502), through-hole (503) and protruding grain (504), draw-in groove (501) have been seted up to one side of outer connecting piece (1), the inside of draw-in groove (501) is fixed with connecting block (401), four groups of through-holes (503) have been seted up on rubber pad (502), rubber pad (502) pass through-hole (503) are installed on connecting block (401), rubber pad (502) laminating is installed the inside of draw-in groove (501), be provided with protruding grain (504) on rubber pad (502), the inseparable laminating of protruding grain (504) is in the side of movable block (308).

10. The electro-mechanical port auto-definition device of claim 9, wherein: the area of the rubber pad (502) is larger than the area of the side surface of the movable block (308), and a detachable structure is formed between the rubber pad (502) and the outer connecting piece (1).