CN213242993U - Ratchet push-pull self-locking electric connector - Google Patents

Abstract

The utility model discloses a self-locking electric connector of ratchet push-and-pull, including plug subassembly and socket subassembly, plug housing cover is equipped with the locking ring, movable mounting has the ratchet on the locking ring, the locating piece is installed to the outer lateral wall of head housing, be fixed with the position sleeve on the lateral wall of head housing rear end, the position sleeve is outside, the outside cover of locking ring is equipped with the push-and-pull ring, the push-and-pull gear of push-and-pull ring opens there is locating piece cooperation groove, the ratchet has four continuous ratchets, socket subassembly includes seat casing and needle insulator, be equipped with rectangular about block on the internal lateral wall of seat casing, still be equipped with the locking bottom plate on the internal lateral wall of seat casing, the locking clearance has between rectangular about block tip and the locking bottom plate. The utility model discloses combine plug and socket grafting position relation, push-and-pull ring to promote ratchet position relation and realize locking and unblock operation jointly, realized plug-type, cut straightly and pull out operation auto-lock purpose, have advantages such as longe-lived height, dependable performance.

Description

Ratchet push-pull self-locking electric connector

Technical Field

The utility model relates to an electric connector especially relates to a ratchet push-and-pull auto-lock electric connector.

Background

The electric connector comprises a plug and a socket, and is a combined structure for realizing electric plug-in connection of the plug and the socket. After the plug is inserted into the socket, the plug can be withdrawn from the socket due to the influence of vibration of external equipment and the like in the using process, the traditional mode is locking connection by adopting a thread mode, a buckle mode or a clamping lock mode and the like, so that locking parts are often additionally arranged, the installation difficulty is increased, a locking structure is installed without a special space sometimes, the locking and unlocking process is relatively complex in operation, and the limitation of the assembling environment is easy to realize. In recent years, a direct-plug and pull-out quick push-pull self-locking mode becomes a research direction, so that how to realize self-locking through a plug and a socket of an electric connector is a technical problem which needs to be mainly solved by technical personnel in the field.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects existing in the prior art, the utility model aims to provide a ratchet push-pull self-locking electric connector, control the locking ring through the ratchet and take place to rotate and realize the locking, when pegging graft, the restriction edge of locking ring and the rectangular restriction piece of seat casing are mutually supported and are pegged graft the motion, push-and-pull gear of pushing away the pull ring simultaneously can be along with the rotation restriction of grafting position change contact ratchet, after pegging graft and target in place, the round platform step of turning up of locking ring just in time lies in the locking clearance, the ratchet rotation restriction is relieved temporarily, the ratchet rotates certain angle and drives the round platform step of turning up to rotate in step, let the round platform step of turning up lock in the locking clearance and can not withdraw; when the control ratchet wheel rotates to the release position, the outward-turning round platform step plate rotates and can withdraw from the locking gap, so that the locking contact of the plug assembly is realized, and the plug assembly is easily pulled out of the socket assembly.

The purpose of the utility model is realized through the following technical scheme:

a ratchet push-pull self-locking electric connector comprises a plug assembly and a socket assembly, wherein the plug assembly comprises a head shell and a tail nut connected with the head shell, the front end of the head shell is movably sleeved with a locking ring, a ratchet is movably mounted on the locking ring, the locking ring is provided with a limiting sliding groove A, the outer side wall of the ratchet is provided with a limiting sliding block A corresponding to the limiting sliding groove A, a spring seat A is arranged inside the locking ring, and a large spring is mounted between the end surface of the ratchet and the spring seat A of the locking ring; the outer side wall of the head shell is provided with a positioning block correspondingly contacted with the ratchet wheel, the outer side wall of the rear end of the head shell is fixed with a positioning sleeve, the outer side wall of the positioning sleeve is provided with a limiting sliding chute B, the outer part of the positioning sleeve and the outer part of the locking ring are sleeved with push-pull rings capable of axially sliding, the inner side wall of the push-pull ring is convexly provided with a push-pull gear which can limit and slide in the limit sliding groove B of the positioning sleeve, a small spring is arranged in a limiting sliding groove B at the rear end of the push-pull gear, the push-pull gear is provided with a positioning block matching groove matched with the positioning block, the ratchet wheel is provided with four continuous ratchets, the ratchets are provided with ratchet surfaces, the front end of the push-pull gear is provided with a ratchet matching surface A matched with the ratchet surfaces of the ratchets, the front end of the positioning block is provided with a ratchet matching surface B matched with a ratchet surface of a ratchet, and the ratchet matching surface A corresponds to the ratchet matching surface B; a hole insulator is arranged in the head shell, and a plurality of electric plug-in holes are formed in the hole insulator; the socket assembly comprises a socket shell and a pin insulator arranged in the socket shell, wherein a plurality of electric plug pins are arranged on the pin insulator, and all the electric plug pins are in one-to-one inserting correspondence with all the electric plug holes; the seat shell is characterized in that a long-strip restraint block is arranged on the inner side wall of the seat shell, a locking bottom plate is further arranged on the inner side wall of the seat shell, a locking gap is formed between the end part of the long-strip restraint block and the locking bottom plate, an outward-turning round platform step plate corresponding to the locking gap is arranged at the front end of the locking ring, and a restraint edge corresponding to the long-strip restraint block and sliding in contact is arranged on the outward-turning round platform step plate.

In order to better realize the utility model discloses, the seat casing is inside to be equipped with the needle clamp plate corresponding with the needle insulator, the end of drawing forth of electric mortiser grafting needle passes the needle clamp plate.

Preferably, the head shell is provided with a front sleeve and a rear sleeve inside the rear end, the front sleeve is completely assembled inside the rear end of the head shell, and the front end part of the rear sleeve is matched, inserted and fixed between the front sleeve and the rear end of the head shell.

Preferably, a wire sealing body and a pressing sleeve corresponding to the wire sealing body are installed inside the rear sleeve, the wire sealing body and the pressing sleeve are located inside the tail nut, and the tail nut is in threaded connection with the rear end of the head shell.

Preferably, one end of the large spring is fixed on the front end face of the ratchet wheel, the other end of the large spring is fixed in the spring seat A of the locking ring, and the large spring is completely accommodated in the locking ring; the elastic prestress of the large spring to the ratchet wheel is larger than the elastic prestress of the small spring to the push-pull gear.

Preferably, the outer side wall of the head shell is provided with a fixing groove, the inner side wall of the positioning block is fixedly provided with a fixing block, and the fixing block of the positioning block is assembled in the fixing groove of the head shell in a matching manner; the front end part of the positioning sleeve is in close fit contact with the rear end part of the positioning block.

Preferably, the ratchet surface of each ratchet tooth is provided with a ratchet surface groove part and a ratchet surface top, the ratchet surface groove parts of two adjacent ratchet teeth form a height difference with the ratchet surface top, and the positioning block is provided with a limiting corner corresponding to the ratchet surface groove part.

Preferably, the positioning blocks and the positioning block matching grooves are identical in shape and size, the push-pull ring is symmetrically provided with two positioning block matching grooves, the outer side wall of the head shell is provided with two positioning blocks, and the two positioning blocks and the two positioning block matching grooves are arranged in a one-to-one correspondence manner.

Preferably, a boundary gasket is further arranged inside the seat shell, the boundary gasket corresponds to the locking bottom plate, and the end face of the boundary gasket is flush with the end face of the locking bottom plate; a clamping ring B is arranged between the needle pressing plate and the inner part of the seat shell.

Preferably, a clamping ring A is mounted at the rear end of the head shell and is tightly matched with the end part of the rear end of the positioning sleeve.

Compared with the prior art, the utility model, have following advantage and beneficial effect:

(1) the utility model is characterized in that a positioning block is fixed on the head shell, a push-pull ring is axially and movably arranged on the head shell, a push-pull gear is arranged inside the push-pull ring, a ratchet wheel is arranged on the head shell in an axially and rotatably way, and the release rotation control of the ratchet wheel and the control of the rotation angle of the ratchet wheel at each time are realized through the relative position relation of the push-pull gear and the positioning block; whether take place to rotate through plug subassembly and socket subassembly's grafting position restraint ratchet, after plug subassembly pegs graft and targets in place, the ratchet just can finally be relieved and rotate fixed angle by two restraints, reaches the purpose of plug subassembly and socket subassembly auto-lock, during the unblock operation, only needs the control ratchet to rotate certain angle again and just can easily realize the unblock operation, the utility model discloses the grafting operation is very convenient, can in time obtain pegging graft and target in place, in case peg graft and target in place after just can realizing the auto-lock, and the unblock operation is also very convenient simultaneously, has that the structure is ingenious, the simple operation, advantages such as auto-lock stable performance.

(2) The utility model discloses a ratchet controls the locking ring to take place to rotate and realizes the locking, when pegging graft, the restriction limit of locking ring and the rectangular restriction piece of seat casing are mutually supported the grafting motion, push-and-pull gear of push-and-pull ring can contact the rotation restriction of ratchet along with the grafting position change simultaneously, after pegging graft targets in place, the round platform step of turning up of locking ring just in time is located the locking clearance, ratchet rotation restriction is relieved temporarily, the ratchet rotates certain angle and drives the round platform step of turning up and rotates in step, let the round platform step of turning up lock in the locking clearance can not withdraw from; when the control ratchet wheel rotates to the release position, the outward-turning round platform step plate rotates and can withdraw from the locking gap, so that the locking contact of the plug assembly is realized, and the plug assembly is easily pulled out of the socket assembly.

(3) The utility model combines the plug and socket inserting position relationship and the push-pull ring pushing ratchet wheel position relationship to jointly realize the locking and unlocking operation, and realizes the self-locking purpose of the push-pull type and direct-insert-pull operation; after locking, the pulling plug can not be unlocked, so that unlocking caused by cable stress or other misoperation is prevented, and the locking device has the advantages of long mechanical life, strong vibration and impact resistance, high reliability and the like.

Drawings

Fig. 1 is a cross-sectional view of the plug assembly of the present invention;

fig. 2 is an exploded schematic view of the plug assembly;

FIG. 3 is a cross-sectional view of the construction of the receptacle assembly;

FIG. 4 is a schematic top view of the receptacle assembly;

FIG. 5 is an exploded view of the receptacle assembly;

FIG. 6 is a perspective cross-sectional view of the seat housing;

FIG. 7 is a schematic structural view of the ratchet;

FIG. 8 is a schematic view of the locking ring;

FIG. 9 is a schematic view of two positioning blocks;

fig. 10 is a schematic structural view of a head housing;

FIG. 11 is a schematic view of the structure of FIG. 10 from another perspective;

FIG. 12 is a schematic view of the push-pull ring as a whole and the internal push-pull gear alone;

fig. 13 is a schematic view of the plug of the present invention in the plugged or disconnected state;

fig. 14 is a schematic view of the plug of the present invention in a locked state;

fig. 15 is a schematic view of the overall structure of the present invention.

Wherein, the names corresponding to the reference numbers in the drawings are:

1-head shell, 101-fixed groove, 2-locking ring, 201-limit sliding groove A, 202-constraint edge, 3-big spring, 4-ratchet wheel, 41-limit sliding block A, 5-locating block, 51-fixed block, 52-limit corner, 6-push-pull ring, 61-push-pull gear, 611-locating block matching groove, 7-small spring, 8-locating sleeve, 9-collar A, 10-hole insulator, 11-electric socket, 12-hole pressure plate, 13-front sleeve, 14-rear sleeve, 15-wire sealing body, 16-press sleeve, 17-tail nut, 18-seat shell, 181-strip constraint block, 182-locking bottom plate, 183-locking gap, 19-interface gasket, 20-needle insulator, 21-electric socket needle, 22-needle pressure plate, 23-collar B.

Detailed Description

The present invention will be described in further detail with reference to the following examples:

examples

As shown in fig. 1 to 15, a ratchet push-pull self-locking electrical connector comprises a plug assembly and a socket assembly, wherein the plug assembly comprises a head shell 1 and a tail nut 17 connected with the head shell 1, a locking ring 2 is movably sleeved at the front end of the head shell 1, a ratchet 4 is movably mounted on the locking ring 2, the ratchet 4 can axially move between the head shell 1 and the locking ring 2, as shown in fig. 1, the ratchet 4 axially moves on the locking ring 2, and simultaneously, the ratchet 4 can drive the locking ring 2 to rotate outside the head shell 1. As shown in fig. 7 and 8, the locking ring 2 is provided with a limit sliding groove a201, the outer side wall of the ratchet 4 is provided with a limit sliding block a41 corresponding to the limit sliding groove a201, when assembling, the limit sliding block a41 of the ratchet 4 is limit-mounted in the limit sliding groove a201 of the locking ring 2, when the ratchet 4 moves axially in the locking ring 2, the limit sliding block a41 moves axially in the limit sliding groove a201, the limit sliding block a41 and the limit sliding groove a201 are both axially arranged, and when the ratchet 4 rotates, the large spring 3 and the locking ring 2 are also driven to rotate integrally. The locking ring 2 is internally provided with a spring seat A, and a large spring 3 is arranged between the end surface of the ratchet wheel 4 and the spring seat A of the locking ring 2.

The outer side wall of the head shell 1 is provided with a positioning block 5 correspondingly contacted with the ratchet 4, the outer side wall of the rear end of the head shell 1 is fixed with a positioning sleeve 8, the outer side wall of the positioning sleeve 8 is provided with a limiting sliding chute B, and the outer part of the positioning sleeve 8 and the outer part of the locking ring 2 are sleeved with a push-pull ring 6 capable of axially sliding, as shown in figure 1, the push-pull ring 6 can axially slide left and right outside the positioning sleeve 8 and the locking ring 2. A push-pull gear 61 which can slide in a limiting sliding groove B of the positioning sleeve 8 in a limiting manner is arranged on the inner side wall of the push-pull ring 6 in a protruding manner, a small spring 7 is installed in the limiting sliding groove B at the rear end of the push-pull gear 61 (namely, the small spring 7 is installed in the limiting sliding groove B on the left side of the push-pull gear 61), and as shown in fig. 12, a positioning block matching groove 611 which is matched with the positioning block 5 is formed in the push-pull. As shown in fig. 7, the ratchet 4 has four continuous ratchets, the ratchets have ratchet surfaces, the front end of the push-pull gear 61 has a ratchet mating surface a mating with the ratchet surfaces of the ratchets, the front end of the positioning block 5 has a ratchet mating surface B mating with the ratchet surfaces of the ratchets, and the ratchet mating surface a corresponds to the ratchet mating surface B. The ratchet surface of each ratchet tooth is provided with a ratchet surface groove part and a ratchet surface top, the ratchet surface groove parts of two adjacent ratchet teeth and the ratchet surface top form a height difference, and the positioning block 5 is provided with a limiting corner part 52 corresponding to the ratchet surface groove parts. The positioning block 5 and the positioning block fitting groove 611 have the same shape and size, the push-pull ring 6 is symmetrically provided with two positioning block fitting grooves 611, the embodiment has two symmetrical ratchet fitting surfaces a, as shown in fig. 12, one positioning block fitting groove 611, one ratchet fitting surface a, one positioning block fitting groove 611, and one ratchet fitting surface a are sequentially arranged, the outer side wall of the head housing 1 is provided with two positioning blocks 5, and the two positioning blocks 5 and the two positioning block fitting grooves 611 are arranged in a one-to-one correspondence manner. As shown in fig. 13, a positioning block fitting groove 611 divides the ratchet fitting surface a of the push-pull gear 61 into an upper ratchet fitting surface a and a lower ratchet fitting surface a, which is higher than the upper ratchet fitting surface a.

As shown in fig. 1 and 2, a hole insulator 10 is installed inside the head housing 1, a plurality of electrical connection holes 11 are opened on the hole insulator 10, and a hole pressing plate 12 corresponding to the hole insulator 10 is further installed inside the head housing 1. The socket assembly comprises a socket shell 18 and a pin insulator 20 arranged inside the socket shell 18, wherein a plurality of electric plug pins 21 are arranged on the pin insulator 20, and all the electric plug pins 21 are in one-to-one plug-in correspondence with all the electric plug holes 11. The inner side wall of the seat shell 18 is provided with a long strip restraining block 181, the inner side wall of the seat shell 18 is further provided with a locking bottom plate 182, a locking gap 183 is formed between the end part of the long strip restraining block 181 and the locking bottom plate 182, the front end of the locking ring 2 is provided with an outward turning round platform step plate corresponding to the locking gap 183, and the outward turning round platform step plate is provided with a restraining edge 202 which is in corresponding contact with the long strip restraining block 181 and slides.

As shown in fig. 3 to 6, a pin presser plate 22 corresponding to the pin insulator 20 is provided inside the socket housing 18, and the leading end of the electrical plug pin 21 passes through the pin presser plate 22. The rear sleeve 14 is internally provided with a wire sealing body 15 and a pressing sleeve 16 corresponding to the wire sealing body 15, the rear sleeve 14, the wire sealing body 15 and the pressing sleeve 16 are all positioned inside a tail nut 17, and the tail nut 17 is in threaded connection with the rear end of the head shell 1. The seat shell 18 is also internally provided with a boundary gasket 19, the boundary gasket 19 corresponds to the locking bottom plate 182, and the end surface of the boundary gasket 19 is flush with the end surface of the locking bottom plate 182. A collar B23 is provided between needle pressure plate 22 and the interior of hub housing 18.

As shown in fig. 1 and 2, a front sleeve 13 and a rear sleeve 14 are further mounted inside the rear end of the head housing 1, the front sleeve 13 is completely assembled inside the rear end of the head housing 1, and the front end of the rear sleeve 14 is fittingly inserted and fixed between the front sleeve 13 and the rear end of the head housing 1. One end of the large spring 3 is fixed on the front end face of the ratchet 4, the other end of the large spring 3 is fixed in the spring seat A of the locking ring 2, and the large spring 3 is completely accommodated in the locking ring 2. The elastic prestress of the large spring 3 to the ratchet 4 is greater than the elastic prestress of the small spring 7 to the push-pull gear 61. The outer side wall of the head shell 1 is provided with a fixing groove 101, the inner side wall of the positioning block 5 is fixedly provided with a fixing block 51, and the fixing block 51 of the positioning block 5 is assembled in the fixing groove 101 of the head shell 1 in a matching mode. The front end part of the positioning sleeve 8 is in close fit contact with the rear end part of the positioning block 5. A clamping ring A9 is arranged at the rear end of the head shell 1, and a clamping ring A9 is tightly matched with the rear end part of the positioning sleeve 8.

The utility model discloses a locking ring 2 cover is outside first casing 1, and in locking ring 2 and the clearance between the first casing 1 were adorned to big spring 3, the spacing slider A41 of ratchet 4 was packed into in locking ring 2's spacing spout A201. The fixing block 51 of the positioning block 5 is arranged in the fixing groove 101 of the head shell 1, the push-pull ring 6 is sleeved outside the head shell 1, the small spring 7 is arranged in the push-pull ring 6, and the positioning sleeve 8 is arranged in the gap between the push-pull ring 6 and the head shell 1.

In order to achieve better assembly of the various components, the following technical assembly structure can be adopted in the embodiment: the head case 1 is formed at the rear end with a groove E, a collar a9 is fitted in the groove E of the head case 1, and the orifice insulator 10 is fitted in the head case 1. The hole insulator 10 is provided with a groove F, the head shell 1 is provided with a convex rib G, and the groove F of the hole insulator 10 is matched and positioned with the convex rib G of the head shell 1. The electric plug hole 11 is arranged in the cavity of the hole insulator 10, the hole pressing plate 12 is arranged in the head shell 1, a groove H is arranged on the hole pressing plate 12, and the groove H of the hole pressing plate 12 is positioned with the convex rib G of the head shell 1. The front sleeve 13 is arranged in the head shell 1, and the rear sleeve 14, the wire sealing body 15 and the pressing sleeve 16 are arranged at the tail part of the head shell 1 together with the tail nut 17. The utility model discloses a needle insulator 20 is adorned in seat casing 18, is equipped with groove J on the needle insulator 20, be equipped with on the seat casing 18 with groove J complex protruding muscle I, the groove J of needle insulator 20 and the protruding muscle I cooperation location of seat casing 18. The contact pin 21 is arranged in the cavity of the pin insulator 20, the pin pressing plate 22 is arranged in the seat shell 18, a groove K is arranged on the pin pressing plate 22, a convex rib I matched with the groove K is arranged on the seat shell 18, and the groove K of the pin pressing plate 22 is matched and positioned with the convex rib I of the seat shell 18. Seat housing 18 is provided with a slot L, a collar B23 is received in slot L of seat housing 18, and a packing 19 is mounted through pin 21 in front of pin insulator 20. The utility model discloses plug, socket structure function description are as follows: jack 11 is mated with pin 21 to transmit electrical signals, the wires are soldered in the solder cup of jack 11, and the shielding mesh of the cable is pressed between front sleeve 13 and rear sleeve 14. The rear sleeve 14 and the wire sealing body 15 are made of elastic materials, and the rear sleeve 14 presses the head shell 1 and the wire sealing body 15 wraps the cable tightly to achieve a sealing function after the tail nut 17 is screwed tightly. The head shell 1 is provided with a convex key O, the seat shell 18 is provided with a groove P matched with the convex key O, the convex key O of the head shell 1 is matched and positioned with the groove P of the seat shell 18, and the boundary gasket 19 is matched with the conical surface of the hole insulator 10 to realize sealing.

The utility model discloses plug, socket locking/separation mechanism:

the insertion process comprises the following steps: non-insertion, insertion process, locking, separation process, non-insertion

And (3) non-insertion: the positioning block 5 is assembled outside the head shell 1, so that the positioning block 5 is fixed, and the push-pull ring 6 can only move along the axial direction and cannot rotate along the axial direction; the ratchet 4 can move along the axial direction and can also rotate along the axial direction. As shown in fig. 1, the locking ring 2 cannot move to the right in the axial direction and can rotate in the axial direction. The pull ring 6 is pushed down under the action of the elasticity of the small spring 7 to move towards the right; the ratchet wheel 4 tends to move to the left under the action of the elasticity of the large spring 3; the large spring 3 is designed to have a larger elastic force than the small spring 7. The bottom of the teeth of the ratchet 4 (i.e., at the ratchet surface groove portion position) is thus dropped at the top of the teeth of the positioning block 5 (i.e., at the ratchet surface groove portion 52 position), as shown in fig. 13, at which time the push-pull gear 61 is engaged with the top of the ratchet surface of the ratchet 4 at the lower ratchet engagement surface a below the positioning block engagement groove 611.

Inserting and combining processes: the push-pull ring 6 is held to push the plug assembly into the receptacle assembly. During the insertion process, the push-pull ring 6 moves rightwards against the ratchet 4, and the positioning block 5 is fixed, so that the positioning block 5 can slowly extend into the bottom of the positioning block matching groove 611, when the positioning block matching groove 611 completely accommodates the positioning block 5, the upper ratchet matching surface a of the push-pull ring 6 above the positioning block matching groove 611, the ratchet matching surface B of the positioning block 5 and the lower ratchet matching surface a form a complete ratchet matching complete inclined plane (as shown in fig. 13, the ratchet matching complete inclined plane is an inclined plane inclined to the left), and meanwhile, the limiting corner 52 of the positioning block 5 also completely exits from the ratchet surface groove part of the first ratchet of the ratchet 4. Under the combined action of the elastic force of the large spring 3 and the supporting force of the inclined plane of the positioning block 5, the ratchet wheel 4 tends to rotate along the axial direction (because the ratchet wheel is matched with the complete inclined plane to form an inclined plane, the ratchet wheel matched with the complete inclined plane corresponds to the top of the ratchet surface groove of the second ratchet wheel of the ratchet wheel 4, the top of the ratchet surface groove of the second ratchet wheel of the ratchet wheel 4 moves leftwards along the ratchet wheel matched with the complete inclined plane, namely the mutual acting force of the push-pull gear 61 and the ratchet wheel 4 is applied, and the ratchet surface of the second ratchet wheel of the ratchet wheel 4 is matched with the complete inclined plane in an inclined way, at the moment, the limiting corner part 52 of the positioning block 5 also completely withdraws from the ratchet surface groove part of the first ratchet wheel of the ratchet wheel 4; however, at this time, the ratchet 4 cannot rotate because the elongate restraint blocks 181 of the seat housing 18 and the restraint edge 202 of the locking ring 2 are restrained from interacting with each other.

And (3) locking process: as the plug assembly is pushed into the socket assembly, when the right end face of the head housing 1 contacts the left end face of the locking bottom plate 182 inside the seat housing 18, the bottom of the teeth (i.e. the ratchet surface groove) of the second ratchet of the ratchet 4 falls on the top of the teeth of the push-pull ring 6 (as shown in fig. 14), the outward-turning circular step plate of the locking ring 2 is just in the locking gap 183 of the seat housing 18, the long restraining block 181 of the seat housing 18 and the restraining edge 202 of the locking ring 2 release the restraining action, and the locking ring 2 and the ratchet 4 rotate together by 45 °. In the locking gap 183 of the locking ring 2, the outward turning round platform step plate of the locking ring 2 is buckled with the locking gap 183 of the base shell 18, and because the outward turning round platform step plate of the locking ring 2 rotates by 45 degrees, the restraining edge 202 of the outward turning round platform step plate of the locking ring 2 and the strip restraining block 181 of the shell 18 are staggered by 45 degrees, so that the plug and the socket are locked.

And (3) a separation process: holding the push-pull ring 6 and pulling the plug assembly outward, the tooth tips of the push-pull gear 61 exit the tooth bottoms (i.e., the ratchet surface groove portions) of the ratchet 4. Under the combined action of the elasticity of the large spring 3 and the supporting force of the inclined surface of the positioning block 5, the ratchet wheel 4 rotates for 45 degrees, and the restraining edge 202 of the outward turning round platform step plate of the locking ring 2 is in right correspondence with the long restraining block 181 of the shell 18. The plug assembly is continuously pulled outwards, so that the plug assembly and the socket assembly are separated and return to the non-plugging state.

As shown in FIG. 7, the ratchet 4 of this embodiment has four continuous ratchets, each of which occupies one fourth of the ratchets 4, i.e. the ratchet surface (shown as a slope) of the ratchets occupies one fourth of the area, and the positioning block 5 occupies one half of the ratchets. As shown in fig. 13, when the locking starts, the tooth top of the positioning block 5 starts to be located at the tooth bottom of the first ratchet, and after the ratchet 4 rotates by 45 °, as shown in fig. 14, the tooth top of the positioning block 5 overlaps with the tooth top of the second ratchet, that is, the ratchet matching surface B of the positioning block 5 is in contact fit with a half top area of the ratchet surface of the second ratchet, and at this time, the tooth top of the push-pull gear 61 is located at the tooth bottom of the second ratchet; when the ratchet wheel 4 rotates for another 45 degrees, the tooth top of the positioning block 5 is positioned at the tooth bottom of the second ratchet.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims (10)

1. A ratchet push-pull self-locking electric connector is characterized in that: the plug comprises a plug component and a socket component, wherein the plug component comprises a head shell (1) and a tail nut (17) connected with the head shell (1), a locking ring (2) is movably sleeved at the front end of the head shell (1), a ratchet wheel (4) is movably mounted on the locking ring (2), a limiting sliding chute A (201) is formed in the locking ring (2), a limiting sliding block A (41) corresponding to the limiting sliding chute A (201) is formed in the outer side wall of the ratchet wheel (4), a spring seat A is arranged in the locking ring (2), and a large spring (3) is mounted between the end surface of the ratchet wheel (4) and the spring seat A of the locking ring (2); the outer side wall of the head shell (1) is provided with a positioning block (5) which is correspondingly contacted with the ratchet wheel (4), the outer side wall of the rear end of the head shell (1) is fixed with a positioning sleeve (8), the outer side wall of the positioning sleeve (8) is provided with a limiting sliding groove B, the outer part of the positioning sleeve (8) and the outer part of the locking ring (2) are sleeved with a push-pull ring (6), the inner side wall of the push-pull ring (6) is convexly provided with a push-pull gear (61) which slides in the limiting sliding groove B of the positioning sleeve (8) in a limiting way, a small spring (7) is arranged in the limiting sliding groove B at the rear end of the push-pull gear (61), the push-pull gear (61) is provided with a positioning block matching groove (611) matched with the positioning block (5), the ratchet wheel (4) is provided with four continuous ratchet teeth, the ratchet teeth are, the front end of the positioning block (5) is provided with a ratchet matching surface B matched with the ratchet surface of the ratchet, and the ratchet matching surface A corresponds to the ratchet matching surface B; a hole insulator (10) is arranged in the head shell (1), and a plurality of electric plug-in holes (11) are formed in the hole insulator (10); the socket assembly comprises a socket shell (18) and a pin insulator (20) arranged in the socket shell (18), wherein a plurality of electric plug pins (21) are arranged on the pin insulator (20), and all the electric plug pins (21) are in one-to-one plug-in correspondence with all the electric plug holes (11); be equipped with rectangular about piece (181) on seat casing (18) inside wall, still be equipped with locking bottom plate (182) on seat casing (18) inside wall, locking clearance (183) have between rectangular about piece (181) tip and locking bottom plate (182), locking ring (2) front end has the round platform step plate of turning up corresponding with locking clearance (183), the round platform step plate of turning up is seted up and is corresponded gliding restraint limit (202) of contact with rectangular about piece (181).

2. A ratcheting push-pull self-locking electrical connector as defined in claim 1 wherein: a pin pressing plate (22) corresponding to the pin insulator (20) is arranged in the socket shell (18), and the leading-out end of the electric plug pin (21) penetrates through the pin pressing plate (22).

3. A ratcheting push-pull self-locking electrical connector as defined in claim 1 wherein: the novel head shell is characterized in that a front sleeve (13) and a rear sleeve (14) are further mounted inside the rear end of the head shell (1), the front sleeve (13) is completely assembled inside the rear end of the head shell (1), and the front end part of the rear sleeve (14) is matched, inserted and fixed between the front sleeve (13) and the rear end of the head shell (1).

4. A ratcheting push-pull self-locking electrical connector as defined in claim 3 wherein: the rear sleeve (14) is internally provided with a wire sealing body (15) and a pressing sleeve (16) corresponding to the wire sealing body (15), the rear sleeve (14), the wire sealing body (15) and the pressing sleeve (16) are all located inside a tail nut (17), and the tail nut (17) is in threaded connection with the rear end of the head shell (1).

5. A ratcheting push-pull self-locking electrical connector as defined in claim 1 wherein: one end of the large spring (3) is fixed on the front end face of the ratchet wheel (4), the other end of the large spring (3) is fixed in a spring seat A of the locking ring (2), and the large spring (3) is completely accommodated in the locking ring (2); the elastic prestress of the large spring (3) to the ratchet wheel (4) is larger than the elastic prestress of the small spring (7) to the push-pull gear (61).

6. A ratcheting push-pull self-locking electrical connector as defined in claim 1 wherein: a fixing groove (101) is formed in the outer side wall of the head shell (1), a fixing block (51) is fixed on the inner side wall of the positioning block (5), and the fixing block (51) of the positioning block (5) is assembled in the fixing groove (101) of the head shell (1) in a matching mode; the front end part of the positioning sleeve (8) is in close fit contact with the rear end part of the positioning block (5).

7. A ratcheting push-pull self-locking electrical connector as defined in claim 1 wherein: the ratchet surface of each ratchet tooth is provided with a ratchet surface groove part and a ratchet surface top, the ratchet surface groove parts of two adjacent ratchet teeth and the ratchet surface top form a height difference, and the positioning block (5) is provided with a limiting corner part (52) corresponding to the ratchet surface groove parts.

8. A ratcheting push-pull self-locking electrical connector as defined in claim 1 wherein: the positioning block (5) and the positioning block matching groove (611) are identical in shape and size, the push-pull ring (6) is symmetrically provided with two positioning block matching grooves (611), the outer side wall of the head shell (1) is provided with two positioning blocks (5), and the two positioning blocks (5) and the two positioning block matching grooves (611) are arranged in a one-to-one correspondence mode.

9. A ratcheting push-pull self-locking electrical connector as defined in claim 2 wherein: a boundary gasket (19) is further arranged inside the seat shell (18), the boundary gasket (19) corresponds to the locking bottom plate (182), and the end face of the boundary gasket (19) is flush with the end face of the locking bottom plate (182); a clamping ring B (23) is arranged between the needle pressing plate (22) and the seat shell (18).

10. A ratcheting push-pull self-locking electrical connector as defined in claim 1 wherein: rand A (9) is installed to head casing (1) rear end, rand A (9) tight fit position sleeve (8) rear end tip.

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