CN110504590B

CN110504590B - Push-pull locking connector

Info

Publication number: CN110504590B
Application number: CN201910696319.5A
Authority: CN
Inventors: 唐盘龙; 张鹏; 赵光辉; 韩云钊; 张志中; 王新
Original assignee: China Aviation Optical Electrical Technology Co Ltd
Current assignee: China Aviation Optical Electrical Technology Co Ltd
Priority date: 2019-07-30
Filing date: 2019-07-30
Publication date: 2021-01-29
Anticipated expiration: 2039-07-30
Also published as: CN110504590A

Abstract

The invention relates to a push-pull locking connector, which comprises a socket and a plug, wherein the plug comprises a plug connecting cap and an insulator assembled in the plug connecting cap, the front end of the insulator is at least provided with a cantilever beam structure which is used for realizing the head seat insertion with the socket in an opposite insertion way, the cantilever beam structure comprises a cantilever beam which can be elastically bent and deformed under stress, a limiting block which is arranged at the front end of the cantilever beam and used for limiting the plug connecting cap, a cantilever hook which is arranged at the front end of the cantilever beam and used for realizing the head seat locking in a matching way with a convex key of the socket, and a cantilever hole which; the plug is provided with the groove of stepping down that is used for providing the removal space for the stopper and the cantilever hook of cantilever beam front end even, and the groove front end of stepping down is equipped with the opening and is used for providing the removal space for the socket convex key, and the socket convex key passes the opening and falls into the cantilever hole and then realizes the headstock with cantilever hook locking and is to inserting. The invention integrates the cantilever hole and the cantilever hook on the same part, when the plug is pulled, the headstock can ensure larger holding force and avoid the headstock being pulled off.

Description

Push-pull locking connector

Technical Field

The invention relates to a push-pull locking connector.

Background

The push-pull locking connector is widely applied to the fields of telecommunication instruments, electronic equipment and the like due to the characteristics of quick connection and separation, small volume and the like, wherein the cantilever hook structure is a common structure in the push-pull locking structure. However, this structure cannot withstand a large holding force due to an unavoidable bending moment.

One common configuration of current push-pull locking connectors is that the cantilever hook engages the base member to effect locking. When the head seat is plugged, the suspension arm hook of the plug bends and deforms downwards under the force of the socket retainer, and then the suspension arm hook returns to the horizontal state, so that the head seat is locked; when the plug is pulled, the cantilever hook hooks the socket retainer to realize the retention of the head seat; when the head seat is separated, the plug connecting cap is pulled backwards, the connecting cap presses the plug cantilever hook downwards to enable the plug cantilever hook to bend and deform, unlocking is achieved, and the head seat is separated.

The problems of the prior art structure are that: the force bearing point of the cantilever hook of the head seat plug deviates from the central axis of the cantilever beam by a distance L, and when the plug is pulled, the acting force F of the socket retainer on the socket retainer and the distance L form a bending moment M which drives the cantilever hook to move downwards. When the bending moment is large enough, the cantilever hook is separated from the socket retainer, and the head seat is separated, so that the connector is pulled off.

Disclosure of Invention

The invention aims to provide a push-pull locking connector, which adopts a structure that a cantilever hole is combined with a cantilever hook, the cantilever hole and the cantilever hook are integrated on the same part, when a plug is pulled, the force of a socket convex key on the cantilever hook is along the central axis of a cantilever beam, so that the generation of bending moment is avoided, larger holding force can be ensured, and a headstock is prevented from being pulled off.

The invention solves the technical problem by adopting the following technical scheme, and the push-pull locking connector provided by the invention comprises a socket and a plug which is inserted into the socket, wherein the plug comprises a plug connecting cap, an insulator assembled in the plug connecting cap and a tail nut connected with the tail of the insulator, and a spring is assembled on the periphery of the insulator, wherein the front end of the insulator is at least provided with a cantilever beam structure which is used for realizing the head-seat insertion with the socket, and the cantilever beam structure comprises a cantilever beam which can be elastically bent and deformed under stress, a limiting block which is arranged at the front end of the cantilever beam and used for limiting the plug connecting cap, a cantilever beam hook which is arranged at the middle part of the front end of the cantilever beam and used for being matched with a convex key on the socket to clamp so as to realize the head-seat locking, and a cantilever hole which is arranged at the rear part of; the front end of the plug connecting cap is provided with a abdicating groove which is used for providing a moving space for a limiting block and a cantilever hook at the front end of the cantilever beam so as to realize the insertion locking or separation of the head seat, and the abdicating groove is arranged corresponding to the cantilever beam structure on the insulator; the front end of the abdicating groove is provided with an opening for providing a moving space for a convex key in the socket when the headstock is inserted and closed or separated, and the convex key in the socket passes through the opening at the front end of the abdicating groove and falls into the cantilever hole to be locked with the cantilever hook so as to realize the butt-insertion of the headstock.

Furthermore, the front end of the cantilever hook is provided with an insertion guide surface I which is an inclined surface and is used for being matched with an insertion guide surface II which is an inclined surface on the socket convex key, when the headstock is plugged, the cantilever hook and the convex key are guided by the insertion guide surface I and the insertion guide surface II to enable the convex key to fall into the cantilever hole, and the holding fitting surface I at the rear end of the cantilever hook and the holding fitting surface II at the front end of the socket convex key are clamped, so that the headstock is plugged and locked.

Furthermore, the periphery of the front end of the plug connecting cap is also provided with a bulge with a guiding and positioning effect for matching with a positioning groove in the socket, and the bulge is inserted into the positioning groove when the head seat is plugged, so that the convex key in the socket accurately penetrates into the opening at the front end of the abdicating groove and is finally matched and locked with the cantilever hook.

Furthermore, under the inserting state of the head seat, the midpoint of the matching surface I in the longitudinal section of the cantilever hook is coincided with the central axis of the longitudinal section of the cantilever beam.

Furthermore, the rear end of the limiting block is provided with a matching surface I which is used for matching and locking with a matching surface II at the rear end of the abdicating groove, and the axial positioning of the plug connecting cap is realized under the combined action of a limiting step I in the plug connecting cap and an outer spring of the insulator; when the plug is pulled backwards to connect the cap, the abdicating groove provides a compensation space, the spring is compressed, and the matching surface I and the matching surface II are separated.

Furthermore, the connecting part of the front end of the abdicating groove and the opening is provided with a separation matching surface used for being matched with a separation guide surface of an inclined plane at the front end of the limiting block, when the head seat is separated, the plug connecting cap is pulled backwards, the separation matching surface moves backwards along with the plug connecting cap and presses the separation guide surface, the separation matching surface is matched with the separation guide surface to apply pressure to the inside of the insulator on the cantilever beam, the cantilever beam generates elastic bending deformation to the inside of the insulator, and finally the holding matching surface I on the cantilever hook is separated from the holding matching surface II on the convex key, so that the head seat is separated by unlocking.

Furthermore, the separating and matching surface is a curved surface.

Further, the cross section of the cantilever beam is rectangular or fan-shaped or trapezoidal.

Furthermore, the cantilever beam is in a head-tail equal width or head-narrow tail width or head-wide tail width or head-thin tail thickness type structure.

Furthermore, a reinforcing rib is further arranged on one side, close to the inside of the insulator, of the cantilever beam.

Compared with the prior art, the invention has the following advantages:

the invention adopts the structure that the cantilever hole is combined with the cantilever hook, the cantilever hole and the cantilever hook are integrated on the same part, the cantilever beam is designed into an elastic deformation structure, the insertion and the separation of the headstock are realized through the characteristic that the cantilever beam generates elastic bending deformation under stress, the maintenance of the headstock is realized through the tensile characteristic of the cantilever beam, when the plug is under tensile force, the force F of the socket convex key on the cantilever hook is along the central axis of the cantilever beam, the generation of bending moment is avoided, larger maintenance force can be ensured, and the headstock is prevented from being pulled off.

Drawings

Fig. 1 is a schematic diagram of the insertion state of the header of the connector of the present invention.

Fig. 2 is a schematic view showing a separated state of the header of the connector of the present invention.

Fig. 3 is an enlarged view of a portion a of fig. 1.

Fig. 4 is an example in which the retaining engagement surface i and the retaining engagement surface ii are both inclined surfaces.

Fig. 5 is a schematic view of the construction of the connector jack of the present invention.

Fig. 6 is an exploded view of the connector plug of the present invention.

Element and symbol description:

1: plug cap 2: insulator 3: and a tail nut 4: and (5) a spring: cantilever beam 6: limiting block

7; the convex key 8: cantilever hook 9: cantilever hole 10: insertion guide surface i 11: insertion guide face II

12: retention mating surface i 13: retention mating surface ii 14: fitting surface I15: fitting surface II

16: limiting step I17: the abdicating groove 18: opening 19: projection 20: locating slot

21: and a limiting step II 22: cantilever beam axis 23: separating the mating surfaces 24: separation guide surface

25: socket 26: cantilever beam elastic deformation space

Detailed Description

In order to further illustrate the technical means and technical effects adopted by the present invention, the present invention is described in detail below with reference to the examples.

It should be noted that: the terms "head", "tail", "front", "back", etc. indicating the orientations of the present invention are based on the illustrated orientations or positional relationships and are used for convenience of describing the present invention, so the present invention should not be construed as being limited thereto. Specifically, fig. 1, 2, and 6 all refer to the left side as the "head", the right side as the "tail", the left side of the same part as the "front end", and the right side as the "rear end".

The plug comprises a plug cap 1, an insulator 2 assembled in the plug cap and a tail nut 3 connected with the tail of the insulator. The insulator is provided with a spring 4, the front end of the insulator is at least provided with a cantilever beam structure for realizing the head seat insertion with the socket, two cantilever beam structures are correspondingly arranged in each of the figures 1, 2 and 6, each cantilever beam structure specifically comprises a cantilever beam 5 which can be elastically bent and deformed under stress, a limiting block 6 arranged at the front end of the cantilever beam, the limiting blocks are used for being clamped on a plug connecting cap matching surface II 15 and matching with a spring on an insulator and axially positioning the plug connecting cap, at least one limiting block is arranged at the front end of each cantilever beam, each cantilever beam front end in fig. 1, fig. 2 and fig. 6 is provided with two limiting blocks, the limiting blocks are distributed on two sides of the cantilever beam front end, a cantilever hook 8 used for being matched and clamped with a convex key 7 on the socket is arranged in the middle of the cantilever beam front end (between the two limiting blocks shown in fig. 6), so that the headstock is locked, and a cantilever hook hole 9 is formed in the rear portion of the cantilever hook and used for providing an assembly space for the convex key on the socket.

Furthermore, the front end of the cantilever hook is provided with an insertion guide surface I10 in an inclined surface state for matching with an insertion guide surface II 11 in an inclined surface state on the socket convex key, and when the head and the base are inserted, the cantilever hook and the convex key enable the convex key 7 to be clamped into the cantilever hole 9 under the guide effect of the insertion guide surface I and the insertion guide surface II, and enable a retaining matching surface I12 at the rear end of the cantilever hook and a retaining matching surface II 13 at the front end of the socket convex key to be clamped, so that head-base locking is realized.

Further, the holding matching surface I and the holding matching surface II are both in a vertical plane structure, as shown in FIG. 3; the holding and matching structure can also be an inclined surface structure, as shown in fig. 4, when the holding and matching structure is an inclined surface structure, the included angles between the holding and matching surface i and the holding and matching surface ii and the vertical direction are the same, and the included angles between the holding and matching surface i and the holding and matching surface ii and the vertical direction do not exceed 15 degrees.

Stopper rear end is provided with and is vertical planar fitting surface I14 and is used for joining the fitting surface II 15 of groove rear end and joining in marriage and locking with the plug, and the insulator is even the cap assembly back with the plug, and spring 4 is spacing by spacing step I16 in the cap even of plug, and fitting surface I14, fitting surface II 15 and spacing step I16 and spring 4 combined action carry out axial positioning to the plug even the cap. The front end of the plug connecting cap is also provided with a yielding groove 17 corresponding to a cantilever beam structure on the insulator and used for providing a moving space for a limiting block and a cantilever hook at the front end of the cantilever beam so as to realize the insertion locking or separation of the head seat. When even the cap of pulling plug backward, the groove of stepping down provides the compensation space that is used for making even the cap of plug to remove, and the stopper and the cantilever hook of cantilever beam front end move forward in the groove of stepping down relatively, and the spring is compressed, and fitting surface I separates with fitting surface II.

Further, the front end of the abdicating groove is provided with an opening 18 for providing a moving space for the convex key in the socket when the head seat is inserted or separated. The periphery of the front end of the plug connecting cap is also provided with a bulge 19 with a guiding and positioning effect for matching with a positioning groove 20 in the socket, and when the plug is inserted into the socket, the bulge is inserted into the positioning groove, so that a convex key in the socket can accurately penetrate into an opening at the front end of the abdicating groove and is clamped into the cantilever hole under the guiding of the insertion guide surface I and the insertion guide surface II to realize butt-inserting and locking of the head seat with the clamping of the holding matching surface I of the cantilever hook.

The principle of the invention is as follows:

(1) before the headstock is plugged, the plug connecting cap and the insulator are assembled, the insulator is arranged in the plug connecting cap, a matching surface I on the limiting block is tightly attached and clamped with a matching surface II in the plug connecting cap abdicating groove, and axial positioning of the plug connecting cap is realized under the action of the spring and the limiting step I.

(2) Then the plug and the socket are oppositely inserted, when the plug is oppositely inserted, the plug is oppositely inserted and positioned through the protrusion on the periphery of the plug connecting cap and the positioning groove in the socket, the tail part (not the plug connecting cap) of the handheld plug is pushed forwards, the limiting step II 21 on the plug connecting cap is tightly propped against the rear end of the socket shell to realize the axial positioning of the plug connecting cap when the plug is oppositely inserted, the tail part of the handheld plug is continuously pushed forwards to the insulator, the spring is compressed, the limiting block, the cantilever hook and the cantilever hole simultaneously move forwards in the abdicating groove, the matching surface I is separated from the matching surface II, finally, the convex key in the socket penetrates through the opening at the front end of the abdicating groove, and the insertion guide surface II on the convex key is matched with the insertion guide surface I on the cantilever hook to enable the cantilever beam to be bent and deformed towards the inside of the insulator, finally, the convex key.

(3) When the plug insulator is pulled backwards, a thrust F along the central axis of the cantilever beam is arranged on the holding matching surface I of the cantilever hook by the holding matching surface II of the socket, the thrust F is overlapped with the central axis 22 of the cantilever beam, and the holding force of the head seat is ensured by the tensile capacity of the insulator.

In order to ensure that the thrust F is superposed with the central axis of the cantilever beam so as to ensure the holding force between the cantilever hook and the convex key, the middle point of the holding fitting surface I in the longitudinal section of the cantilever hook is superposed with the central axis of the longitudinal section of the cantilever beam.

(4) When the headstock is separated, the plug connecting cap is pulled backwards, the arc-shaped separation matching surface 23 (namely the separation matching surface 23 is a curved surface) at the connecting part of the front end of the abdicating groove and the opening moves backwards along with the plug connecting cap and is pressed on the separation guide surface 24 with the inclined surface at the front end of the limiting block, the plug connecting cap is continuously pulled backwards, the separation matching surface is matched with the separation guide surface to apply pressure to the inside of the insulator by the cantilever beam, the cantilever beam generates elastic bending deformation towards the inside of the insulator, and finally the holding matching surface I on the cantilever hook is separated from the holding matching surface II on the convex key, so that unlocking is realized, and the headstock is.

After the head seat is separated, the plug connecting cap moves forwards under the action of the spring, and finally the matching surface I on the limiting block and the matching surface II on the plug connecting cap are clamped to realize axial limiting of the plug connecting cap.

Further, the cross section of the cantilever beam of the present invention may be rectangular, or fan-shaped, or trapezoidal, etc., and fig. 6 shows a rectangle. The shape of the cantilever beam can be equal in head and tail width, narrow in head and tail width, wide in head and tail width, thin in head and thick in tail, the head of the cantilever beam refers to one end of the cantilever beam close to the cantilever hook, and the tail of the cantilever beam refers to one end of the cantilever beam close to the spring. And a deformation structure such as a reinforcing rib can be added at the bottom of the cantilever beam (the side of the cantilever beam close to the inside of the insulator).

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention in any way, and any simple modification, equivalent change and modification made by those skilled in the art according to the technical spirit of the present invention are still within the technical scope of the present invention without departing from the technical scope of the present invention.

Claims

1. A push-pull locking connector comprises a socket and a plug which is oppositely inserted into the socket, wherein the plug comprises a plug connecting cap, an insulator which is assembled in the plug connecting cap and a tail nut which is connected with the tail of the insulator, and a spring is assembled on the periphery of the insulator; the front end of the plug connecting cap is provided with a abdicating groove which is used for providing a moving space for a limiting block and a cantilever hook at the front end of the cantilever beam so as to realize the insertion locking or separation of the head seat, and the abdicating groove is arranged corresponding to the cantilever beam structure on the insulator; the front end of the abdicating groove is provided with an opening for providing a moving space for a convex key in the socket when the head seat is inserted in or separated from the socket, the convex key in the socket passes through the opening at the front end of the abdicating groove and falls into the cantilever hole to be locked with the cantilever hook to realize the butt-insertion of the head seat, the rear end of the limiting block is provided with a matching surface I for matching and locking with a matching surface II at the rear end of the abdicating groove, and the axial positioning of the plug connecting cap is realized under the combined action of a limiting step I in the plug connecting cap and an outer spring of the insulator; when the plug is pulled backwards to connect the cap, the abdicating groove provides a compensation space, the spring is compressed, and the matching surface I and the matching surface II are separated.

2. A push-pull lock connector as defined in claim 1, wherein the front end of the cantilever hook is provided with an inclined insertion guide surface i for engaging with an inclined insertion guide surface ii on the male key of the receptacle, and the cantilever hook and the male key are guided by the insertion guide surface i and the insertion guide surface ii to cause the male key to fall into the cantilever hole and to cause the holding engagement surface i at the rear end of the cantilever hook and the holding engagement surface ii at the front end of the male key of the receptacle to be tightly engaged when the headstock is inserted, thereby achieving the locking of the headstock by insertion.

3. The push-pull locking connector as claimed in claim 2, wherein the plug cap is further provided at its front end with a projection for guiding and positioning for engagement with a positioning groove in the socket, and the projection is inserted into the positioning groove when the head mount is inserted into the head mount so that the tab in the socket is accurately inserted into the opening at the front end of the relief groove and finally engaged and locked with the cantilever hook.

4. A push-pull locking connector as claimed in claim 2, wherein the midpoint of the mating surface i in the longitudinal section of the cantilever hook coincides with the central axis of the longitudinal section of the cantilever beam in the header-plugged state.

5. The push-pull locking connector as claimed in claim 1, wherein a separation fitting surface for fitting with a separation guide surface having an inclined surface with respect to the front end of the stopper is provided at a position where the front end of the relief groove is connected to the opening, and when the head base is separated, the plug connecting cap is pulled backward, the separation fitting surface moves backward along with the plug connecting cap and presses against the separation guide surface, the separation fitting surface is fitted with the separation guide surface to apply a pressure to the inside of the insulator from the cantilever beam, the cantilever beam elastically bends and deforms toward the inside of the insulator, and finally the holding fitting surface i on the cantilever hook is separated from the holding fitting surface ii on the convex key, thereby achieving unlocking to separate the head base.

6. The push-pull locking connector of claim 5 wherein the breakaway mating surface is curved.

7. The push-pull locking connector of claim 1, wherein the cantilever beam has a rectangular or fan-shaped or trapezoidal cross-section.

8. The push-pull locking connector of claim 1, wherein the cantilevered beam is of a head-to-tail equal width or head-to-tail narrow width or head-to-head wide-to-tail narrow or head-to-head thin-to-tail thick configuration.

9. The push-pull locking connector of claim 1, wherein the cantilevered beam is further provided with a stiffener on a side thereof adjacent the interior of the insulator.