CN214013294U - A kind of interface unit - Google Patents

Abstract

The utility model discloses a connector, it includes plug and socket, and the plug has and holds chamber, connector and counter bore all with hold the chamber intercommunication, and the socket has the link, has cyclic annular spacing arch on the link, through installing the link and making plug and socket connection in holding the intracavity, the axis direction of counter bore is perpendicular with the axis direction of connector, installs the retaining member in the counter bore, the retaining member can be contradicted with one side that the plug was kept away from to cyclic annular spacing arch and be connected, and then blocks the socket. The connector of this application has the retaining member of elasticity end through adopting the integral type to lock the socket, both can reduce the use quantity of part, reduces part and processing cost, simplifies the dismouting flow, also can make certain contribution for energy saving and emission reduction when realizing more economic benefits, in addition, the plug tail-hood of the connector of this application adopts the buckle fastening to replace original screw-thread fastening for it is more convenient and firm to install.

Description

A kind of interface unit

Technical Field

The utility model relates to an electric connector technical field especially relates to a connector.

Background

Connectors are the basic elements for electrical connections and signal transfer between devices, assemblies and components, systems and systems. Connectors, which are generally composed of a socket and a plug, are widely used in various electrical circuits. The locking is realized through threaded connection mostly between current plug and the socket, nevertheless this kind of mode exists that the connection step is loaded down with trivial details, and the operation is consuming time, receives the easy pine of external force and takes off the scheduling problem, though there are some connectors that use retaining member to replace screw locking on the market, the retaining member structure of these connectors is complicated nevertheless, and part quantity is many, and product part and processing cost are higher. In addition, most of the terminals of the plugs of the existing connectors are locked by threads, so that the wires are easy to loosen after long-time use, the waterproof effect is poor, electric leakage is caused in serious cases, and irretrievable harm is caused.

Therefore, in combination with the above-mentioned technical problems, a new technical solution is needed.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the problem that the structure of current connector is complicated, the part is more and with high costs, replaces the spring part of original technique universal use through adopting a retaining member that has the elasticity end to it is many to solve part quantity, and the installation flow is loaded down with trivial details, and part and the higher problem of processing cost. And the connection mode of the plug tail cover is changed, and the original threaded connection is replaced by the buckle type connection, so that the installation of the plug tail cover is firmer.

For realizing the utility model discloses a purpose, the utility model provides a connector, it includes plug and socket, the plug has and holds chamber, connector and counter bore all with hold the chamber intercommunication, the socket has the link, cyclic annular spacing arch has on the link, through inciting somebody to action the link is installed it makes to hold the intracavity plug and socket are connected, the axis direction of counter bore with the axis direction of connector is perpendicular, install the retaining member in the counter bore, the retaining member can with cyclic annular spacing arch is kept away from one side conflict of plug is connected, and then blocks the socket.

In a further embodiment, a connecting assembly is arranged in the plug, the connecting assembly comprises a first connecting port and a second connecting port, a plug tail cover is clamped on the first connecting port, a connecting wire can penetrate through the plug tail cover to be connected with the connecting assembly, and the connecting end of the socket can be inserted into the accommodating cavity through the second connecting port to be connected with the connecting assembly.

In a further embodiment, the retaining member comprises a pressing part, a rebounding part and a locking part, the rebounding part and the locking part are perpendicularly arranged on one side of the pressing part, when the retaining member is installed in the counter bore, one end, away from the pressing part, of the rebounding part is in abutting connection with the bottom of the counter bore, and the locking part can be in abutting connection with one side, away from the plug, of the annular limiting protrusion.

In a further embodiment, the resilient portion is resilient and is capable of being compressed along its length by an external force and resiliently springing back along its length in its natural state.

In a further embodiment, one end, away from the resilience supporting portion, of the resilience portion is provided with an abutting portion, the abutting portion is parallel to the bottom of the counter bore, and the resilience portion is in abutting connection with the bottom of the counter bore through the abutting portion.

In a further embodiment, the retaining member further comprises a retaining portion, the retaining portion is vertically arranged on one side of the pressing portion, which is provided with the rebounding portion or the locking portion, the retaining portion is connected with the inner wall of the counter bore in a buckling mode, and when the rebounding portion rebounds to the initial state, the retaining portion can prevent the retaining member from continuing to move towards the direction far away from the bottom of the counter bore.

In a further embodiment, the locking part is kept away from a side surface of the accommodating cavity is further provided with a limiting groove, the length direction of the limiting groove is consistent with that of the locking part, the bottom of the counter bore corresponds to the position of the limiting groove, a limiting block is arranged at the position of the limiting groove, the height direction of the limiting block is consistent with the axis direction of the counter bore, and the locking part can slide on the limiting block through the limiting groove.

In a further embodiment, the retaining member is in a natural state, and a side of the pressing portion away from the resilient portion is flush with a side of the plug; and the opening of the counter bore is provided with a flaring.

In a further embodiment, a plurality of insertion portions and/or a plurality of fastening portions are provided at one end of the plug tail cover connected to the first connection port, a plurality of slots and/or a plurality of fastening grooves are provided on the plug corresponding to the fastening positions of the plug tail cover, the slots correspond to the insertion portions one to one, and the fastening grooves correspond to the fastening portions one to one.

Compared with the prior art, the connector of the application has one or more of the following beneficial effects:

(1) according to the connector, the locking piece with the elastic end is adopted to replace a spring part commonly used in the prior art, so that the using number of the parts is reduced, the installation process is simplified, and the parts and the process cost are reduced;

(2) the utility model provides a connector, its plug tail-hood adopts the buckle fastening to replace original screw-thread fastening for its installation is more convenient and firm, and difficult pine takes off.

Drawings

Fig. 1 is a schematic structural diagram of a connector provided in an embodiment of the present application;

fig. 2 is an exploded view of a connector according to an embodiment of the present disclosure;

fig. 3 is an exploded view of a plug according to an embodiment of the present disclosure;

fig. 4 is a schematic structural diagram of another plug tail cover provided in the embodiment of the present application;

fig. 5 is a schematic cross-sectional view of a connector provided in an embodiment of the present application along an axial direction thereof;

FIG. 6 is a schematic view of a retaining member according to an embodiment of the present disclosure;

FIG. 7 is a schematic cross-sectional view of a plug having a retaining member of FIG. 6 mounted thereon according to an embodiment of the present application;

FIG. 8 is a schematic perspective view of another retaining member according to an embodiment of the present application;

FIG. 9 is a schematic side view of another retaining member according to an embodiment of the present disclosure;

FIG. 10 is a schematic cross-sectional view of a plug having a retaining member of FIG. 8 mounted thereon according to an embodiment of the present application;

FIG. 11 is a schematic view of a fitting structure between the locking member and the limiting block according to the embodiment of the present application;

fig. 12 is an exploded view of a plug with a fool-proof member installed therein according to an embodiment of the present disclosure;

fig. 13 is a schematic structural view of a fool-proof member according to an embodiment of the present disclosure;

fig. 14 is a schematic structural view of another fool-proof member according to an embodiment of the present application.

Wherein, 1-plug, 11-plug main body, 111-connecting component, 1111-connecting terminal, 1112-female terminal, 112-plug shell, 113-first connecting port, 114-second connecting port, 115-counter bore, 1151-limiting block, 1152-flaring, 116-guide tube, 12-plug tail cover, 121-inserting part, 122-buckling part, 13-locking piece, 131-pressing part, 1311-antiskid structure, 132-resilience part, 1321-resilience supporting part, 1322-elastic part, 1323-interference part, 133-locking part, 1331-locking supporting part, 1332-clamping part, 1333-limiting groove, 1334-limiting surface, 134-backstop part, 1341-boss, 1342-strip notch, 2-socket, 21-connecting end, 211-annular limiting protrusion, 212-first inner cavity, 213-second inner cavity, 214-stop surface, 22-socket fixing plate, 3-fool-proof piece, 31-mounting hole, 32-insertion hole, 33-fool-proof protrusion, 34-fool-proof groove, 35-annular protrusion and 4-connecting wire.

Detailed Description

To further illustrate the technical means and effects of the present invention adopted to achieve the intended purpose of the present invention, the following detailed description is given to the embodiments, structures, features and effects according to the present invention with reference to the accompanying drawings and preferred embodiments.

Referring to fig. 1 to 14, fig. 1 is a schematic structural diagram of a connector according to an embodiment of the present disclosure; fig. 2 is an exploded view of a connector according to an embodiment of the present disclosure; fig. 3 is an exploded view of a plug according to an embodiment of the present disclosure; fig. 4 is a schematic structural diagram of another plug tail cover provided in the embodiment of the present application; fig. 5 is a schematic cross-sectional view of a connector provided in an embodiment of the present application along an axial direction thereof; FIG. 6 is a schematic view of a retaining member according to an embodiment of the present disclosure; FIG. 7 is a schematic cross-sectional view of a plug having a retaining member of FIG. 6 mounted thereon according to an embodiment of the present application; FIG. 8 is a schematic perspective view of another retaining member according to an embodiment of the present application; FIG. 9 is a schematic side view of another retaining member according to an embodiment of the present disclosure; FIG. 10 is a schematic cross-sectional view of a plug having a retaining member of FIG. 8 mounted thereon according to an embodiment of the present application; FIG. 11 is a schematic view of a fitting structure between the locking member and the limiting block according to the embodiment of the present application; fig. 12 is an exploded view of a plug with a fool-proof member installed therein according to an embodiment of the present disclosure; fig. 13 is a schematic structural view of a fool-proof member according to an embodiment of the present disclosure; fig. 14 is a schematic structural view of another fool-proof member according to an embodiment of the present application.

Examples

The present embodiment provides a connector including a header 1 and a receptacle 2, as shown in fig. 1 and 2. The plug 1 includes a plug main body 11 and a plug tail cover 12, as shown in fig. 3. The plug main body 11 includes a plug housing 112, a connecting assembly 111 and a locking member 13. Have in the plug shell 112 and hold the chamber, coupling assembling 111 installs hold the intracavity, first connector 113 and second connector 114 have been seted up on the plug shell 112, first connector 113 and second connector 114 respectively with hold the chamber intercommunication, plug tail-hood 12 block is in first connector 113, socket 2 installs second connector 114. The axial direction of the first connection port 113 is perpendicular to the axial direction of the second connection port 114, i.e. an "L" shaped receiving cavity is formed in the plug housing 112. The connection assembly 111 includes a connection terminal 1111 and a female terminal 1112, one end of the connection terminal 1111 is connected to one end of the female terminal 1112, and the female terminal 1112 is perpendicularly connected to the connection terminal 1111. The other end of the connection terminal 1111 communicates with the outside of the plug main body 11 through the first connection port 113, and the other end of the female terminal 1112 communicates with the outside of the plug main body 11 through the second connection port 114. In a specific implementation, the plug housing 112 may be obtained by injection molding on the connection terminal 1111, one end of the connection terminal 1111 is located in the receiving cavity, and the other end of the connection terminal 1111 is located in the first connection port 113. A guide tube 116 is arranged in the accommodating cavity, and one end of the guide tube 116 extends out of the plug 1 through the second connecting port 114. The guide tube 116 may also be injection molded with the plug housing 112, the guide tube 116 being hollow and tubular. As shown in fig. 3 and 5, an end of the connection terminal 1111 located in the receiving cavity has a through hole, and in practical implementation, the inner cavity of the guide tube 116 is corresponding to the size of the through hole on the connection terminal 1111. The female terminal 1112 is installed in the guide tube 116, and one end of the female terminal 1112 is press-fitted into the through hole of the connection terminal 1111 by a press, so that the female terminal 1112 and the connection terminal 1111 are electrically connected.

The plug tail cover 12 is engaged with the plug main body 11, i.e., at the first connection port 113. The connecting cable 4 can be connected to the connecting assembly 111, i.e. to the connecting terminal 1111, via the connector tail cap 12. The plug tail cover 12 is cylindrical, one end of the plug tail cover 12 extends outwards to form a plurality of inserting portions 121 and/or a plurality of buckling portions 122, and a gap is formed between every two adjacent inserting portions 121 and/or buckling portions 122 to form a groove. The plug main body 11 is provided with a plurality of slots and/or a plurality of slots on the outer surface of the first connection port 113, the slots correspond to the insertion portions 121 one to one, the slots correspond to the fastening portions 122 one to one, when the plug tail cover 12 is fastened to the plug main body 11, the insertion portions 121 can be inserted into the corresponding slots, and/or the fastening portions 122 can be fastened and connected to the corresponding slots. As shown in fig. 3, in this embodiment, it is preferable that a plurality of the insertion portions 121 and a plurality of the fastening portions 122 are alternately arranged. And each buckle part 122 is provided with a clamping hole, a clamping table matched with the clamping hole is arranged in each clamping groove, when the plug tail cover 12 is clamped on the plug main body 11, the clamping table can be just clamped in the corresponding clamping hole, so that the plug clamping hole can be firmly clamped on the plug main body 11. Of course, it is also possible that a catch is provided on the catch portion 122 and the catch hole is provided in the catch groove, but preferably, the catch hole is counter-sunk. The width of the insertion portion 121 is not consistent with the width of the buckle portion 122, for example, the width of the insertion portion 121 is greater than the width of the buckle portion 122, or the width of the insertion portion 121 is smaller than the width of the buckle portion 122, preferably, the width of the insertion portion 121 is smaller than the width of the buckle portion 122, so that in this specific implementation, the width of the slot corresponding to the insertion portion 121 is also smaller than the width of the buckle portion 122, so that when the plug tail cover 12 is installed, the buckle portion 122 cannot be inserted into the slot, the insertion portion 121 plays a guiding role, and also plays a role in preventing misplugging, and can effectively ensure the accuracy of installation.

In a further embodiment, the outer surface of the plug tail cap 12 may also be provided with a protrusion at a position corresponding to the insertion portion 121, as shown in fig. 4. The protrusion is aligned with the inner end of the groove, the length direction of the protrusion is consistent with the width direction of the insertion part 121, and two ends of the protrusion respectively extend to the edges of the adjacent buckling parts 122 at two sides of the corresponding insertion part 121. When the insertion part 121 is inserted into the corresponding slot, the protrusion abuts against the slot to play a role in limiting. It should be noted that, when in use, the connection wire 4 is connected to the connection terminal 1111, the plug tail cover 12 is sleeved on the connection wire 4, and a sealing component and a claw may be further disposed in the plug tail cover 12, which is not a protection focus of this application and therefore is not described in detail in this embodiment. The plug tail cover 12 of the embodiment is used by matching the buckling part 122 with the inserting part 121, so that the movement of the plug tail cover 12 in the axis direction is effectively limited, the radial rotation of the plug tail cover 12 is effectively avoided, the installation is very firm, and the plug tail cover is not easy to loosen.

In a further embodiment, the receptacle 2 is mounted to the second connection port 114. The connecting end 21 of the socket 2 is provided with an annular limiting protrusion 211, when the plug 1 is mounted on the socket 2 or the socket 2 is mounted on the second connecting port 114, the guide tube 116 is inserted into the connecting end 21 of the socket 2, the connecting end 21 of the socket 2 is inserted into the accommodating cavity through the second connecting port 114, the socket 2 can be electrically connected with the connecting component 111, that is, the socket 2 can be electrically connected with the female terminal 1112.

In a further embodiment, a counter bore 115 is further formed in one side of the plug housing 112, the axial direction of the counter bore 115 is perpendicular to the axial direction of the second connection port 114, the counter bore 115 is communicated with the accommodating cavity, the retaining member 13 is installed in the counter bore 115, and the retaining member 13 can move in the counter bore 115 along the axial direction of the counter bore 115. When the connecting end 21 of the socket 2 is inserted into the accommodating cavity, the locking member 13 can lock the annular limiting protrusion 211, so that the socket 2 and the connecting assembly 111 are locked. The inserting end of the locking member 13 has elasticity, and in a natural state, the locking member 13 is located at a locking position, when the locking member 13 is acted by external force, the locking member 13 can be driven to move to an unlocking position, and the connecting end 21 of the socket 2 can be separated from the accommodating cavity.

In a further embodiment, the locking member 13 is preferably integrally formed of a plastic material. The locker 13 includes a pressing portion 131, a resilient portion 132, and a locking portion 133, as shown in fig. 6. The resilient portion 132 and the locking portion 133 are vertically provided at one side of the pressing portion 131, which is an insertion end of the locker 13, respectively. The length of the resilience portion 132 is greater than that of the locking portion 133, when the locking member 13 is installed in the counterbore 115, one end, away from the pressing portion 131, of the resilience portion 132 is in interference connection with the bottom of the counterbore 115, and the end of the locking portion 133 can serve as a limiting surface 1334, so that the resilience portion 132 is prevented from being excessively compressed, damage is prevented, and the service life of the locking member 13 is prolonged. The locking portion 133 can be abutted against and connected with one side of the annular limiting protrusion 211, which is far away from the plug 1, so as to clamp the socket 2.

The resilient part 132 includes a resilient support 1321 and an elastic part 1322 in this order, the resilient support 1321 is connected to the pressing part 131, the elastic part 1322 has elasticity, and the elastic part 1322 can be compressed in a longitudinal direction of the resilient part 132 by an external force and resiliently return in the longitudinal direction of the resilient part 132 in a natural state. Preferably, the cross-sectional shape of the elastic portion 1322 along the axial direction of the resilient portion 132 is curved or dog-leg shaped.

The present embodiment provides a locking member 13 as shown in fig. 6 and 7, in which the elastic portion 1322 is schematically shown as a "V" shape, and such a structure design can make the elastic portion 1322 have a certain elasticity, and can be compressed after being subjected to an external force, and can rebound to an initial state under a natural state. One end of the elastic part 1322 away from the rebound supporting part 1321 is provided with an interference part 1323, the interference part 1323 is parallel to the bottom of the counter bore 115, and the rebound part 132 is in interference connection with the bottom of the counter bore 115 through the interference part 1323.

This embodiment also provides a locking member 13 as shown in fig. 8-10, in which the elastic portion 1322 is shown schematically as a wave formed by two inverted common-side "V" shapes. What is different from the last one is that, this retaining member 13's conflict portion 1323 sets up the second trough position that is close to of wavy elastic component 1322, conflict portion 1323's length is shorter, works as like this elastic component 1322 receives when external force effect is compressed, conflict portion 1323 can follow the bottom downstream of counter bore 115, until conflict portion 1323 with the back is contacted to the lateral wall of counter bore 115, elastic component 1322 just is by compression deformation to under two bending structure's effect, make this retaining member 13's elasticity or resilience compare last one more outstanding, the atress of elastic component 1322 is more even, and is not fragile. Of course, both of the above two schemes are only schematic illustrations, and the shape, number of bending and the like of the elastic part 1322 can be designed according to the needs in specific implementation.

In a further embodiment, the retaining portion 134 is vertically disposed on the side of the pressing portion 131 where the resilient portion 132 or the locking portion 133 is disposed, and when the resilient portion 132 is resilient to the initial state, the retaining portion 134 can prevent the locking member 13 from moving further away from the bottom of the counterbore 115.

In a further embodiment, the rebound supporter 1321 is flush with one end of the pressing part 131, the stopping part 134 and the locking part 133 are flush with the other end of the pressing part 131, respectively, and the stopping part 134 is located at one side of the rebound supporter 1321. Due to the structural layout, the edge profile of the locking member 13 can be consistent with that of the pressing part 131, the pressing part is preferably in a cuboid shape, the locking member 13 is also in a cuboid shape, and the counter bore 115 is adaptively designed in a cuboid shape, so that the locking member 13 can be ensured to effectively move along the axial direction of the counter bore 115, and the locking member 13 can be prevented from rotating. The locking portion 133 is located on one side of the retaining portion 134 close to the accommodating cavity, and the retaining portion 134 is in snap connection with the inner wall of the counter bore 115. One end of the retaining portion 134 remote from the pressing portion 131 is spaced apart from the rebound support 1321. Preferably, a boss 1341 is disposed at one end of the anti-backup portion 134 away from the pressing portion 131, a long notch 1342 is disposed at a position, corresponding to the boss 1341, on an inner wall of the counterbore 115, a length direction of the long notch 1342 is identical to an axial direction of the counterbore 115, and the long notch 1342 may be a groove or a through hole. When the slot 1342 is a through hole, the counterbore 115 is in communication with the outside of the plug 1. The user can use a tool to eject the boss on the retaining portion 134 out of the elongate slot and remove the retaining member 13. When the locking member 13 is damaged, it is very convenient to replace. When the retaining member 13 is installed in the counterbore 115, the boss 1341 is located in the elongated slot 1342, and the boss 1341 is slidable in the elongated slot 1342. Of course, the above is only a preferred solution, and in practical implementation, the elongated notch 1342 may also be disposed on the retaining portion 134, and the boss 1341 is disposed at a corresponding position on the inner wall of the counterbore 115, and can also achieve the same retaining effect. The application also the stopping part 134 has certain elasticity, the stopping part 134 is kept away from the one end of pressing part 131 with resilience supporting part 1321 interval sets up, can guarantee when installing retaining member 13, and stopping part 134 can be crooked to being close to resilience supporting part 1321 direction under the effect of boss 1341 to guarantee that retaining member 13 can be smooth the installation extremely in the counter bore 115, until boss 1341 installs extremely in the rectangular notch 1342, stopping part 134 resilience to initial condition, boss 1341 block is in rectangular notch 1342.

In a further embodiment, the locking part 133 includes a locking support part 1331 and a clamping part 1332 in sequence. The locking support part 1331 is connected to the pressing part 131, and the width of the fastening part 1332 increases from the locking support part 1331 toward a direction away from the locking support part 1331. When the locking member 13 is in a natural state, under the action of the elastic portion 1322, the locking member 13 is in a locking position, and at this time, the clamping portion 1332 extends into the accommodating cavity, but the locking support portion 1331 does not extend into the accommodating cavity. The side of the clamping part 1332 close to the accommodating cavity is an arc surface, that is, the side far away from the retaining part 134 is an arc surface, and a chamfer is arranged on the side edge of the locking part 133 close to the accommodating cavity. The chamfer design can ensure that the connecting end 21 of the socket 2 can be smoothly inserted into the accommodating cavity, and the clamping part 1332 can smoothly move along the axial direction of the counter bore 115 under the action of the annular protrusion when the connecting end 21 of the socket 2 is inserted.

In a further embodiment, a side of the fastening portion 1332 away from the accommodating cavity is further formed with a limiting groove 1333, that is, a side close to the retaining portion 134 is formed with a limiting groove 1333. The length direction of the limiting groove 1333 is the same as the length direction of the locking portion 133, a limiting block 1151 is arranged at the bottom of the counter bore 115 corresponding to the position of the limiting groove 1333, the height direction of the limiting block 1151 is the same as the axial direction of the counter bore 115, and the locking member 13 can slide on the limiting block 1151 through the limiting groove 1333, as shown in fig. 11. Due to the structural design, in practical implementation, the limit block 1151 is located between the elastic portion 1322 and the clamping portion 1332, and can play a role in limiting, so that on one hand, the insertion end of the locking member 13 can be prevented from being inclined when the connecting end 21 of the socket 2 is inserted, and on the other hand, the elastic portion 1322 can be further prevented from being excessively compressed and damaged.

In a further embodiment, the retaining member 13 is in a natural state, the side of the pressing portion 131 away from the resilient portion 132 is flush with the side of the plug 1, the side of the pressing portion 131 away from the resilient portion 132 is provided with an anti-slip structure 1311, the anti-slip structure 1311 may be a plurality of strip-shaped grooves arranged in parallel, and may also be in other shapes, such as strip-shaped protrusions, breaking point grooves, and the like, and the arrangement shape of the anti-slip structure 1311 may also be designed as required. The opening part of counter bore 115 has flaring 1152, and such structural design can guarantee that the user is better presses retaining member 13, for prior art, the partial area of pressing 131 of this application is bigger, combines to adopt the design of flaring 1152, and the user passes through the thumb tripe alright with the realization right retaining member 13 presses, and the unblock is more convenient.

Generally, connectors are fool-proof in color, namely, red is used as the color of a positive connector, and black is used as the color of a negative connector, but the phenomenon that the plug 1 is mistaken for the socket 2 still exists during normal installation or use. Therefore, the embodiment further provides a connector with fool-proof function, wherein a fool-proof member 3 is sleeved on the guiding tube 116, as shown in fig. 12, and then the connecting end 21 of the socket 2 is connected with the plug 1.

As shown in fig. 12 and 13, the fool-proof member 3 is a cylindrical structure having openings at both ends. An inner cavity matched with the guide tube 116 in shape is formed in the fool-proof piece 3, the holes at the two ends of the fool-proof piece 3 are respectively a mounting hole 31 and an insertion hole 32, that is, the mounting hole 31 is formed at the upper end of the fool-proof piece 3 in fig. 12, and the insertion hole 32 is formed at the bottom end of the fool-proof piece. The mounting hole 31 and the insertion hole 32 are both communicated with the inner cavity. The fool-proof piece 3 is sleeved on the guide tube 116 through the mounting hole 31. The diameter of the insertion hole 32 is smaller than the inner diameter of the inner cavity, and when the fool-proof piece 3 is sleeved on the guide tube 116, the bottom end of the fool-proof piece 3 can play a limiting role. The pins of the socket 2 are inserted into the female terminals 1112 through the insertion holes 32 to be connected to the connection assembly 111. The inner wall of the inner cavity is in snap fit connection with the outer wall of the guide tube 116. Fig. 5 shows that the inner wall of the inner cavity is provided with a boss, and the outer wall of the guide tube 116 is provided with a slot to realize the snap connection, but this is only a preferred mode, and in specific implementation, the boss may be provided on the outer wall of the guide tube 116, and the slot may be provided on the inner wall of the inner cavity, so that the same snap connection effect can be realized.

Prevent slow-witted 3 the outer wall with be equipped with between the inner wall of link 21 and prevent slow-witted structure, prevent slow-witted structure include a plurality of prevent slow-witted arch 33 and with prevent slow-witted arch 33 a plurality of complex a plurality of prevent slow-witted recess 34 one by one. As shown in fig. 12 and 13, the fool-proof piece 3 is shown in the figures, wherein the fool-proof protrusion 33 is disposed on the outer wall of the fool-proof piece 3, and the fool-proof groove 34 is disposed on the inner wall of the connecting end 21. Certainly, the fool-proof groove 34 may be disposed on the outer wall of the fool-proof member 3, and the fool-proof protrusion 33 is disposed on the inner wall of the connecting end 21; or the outer wall of the fool-proof piece 3 is provided with the fool-proof protrusion 33 and the fool-proof groove 34, and the same fool-proof function can be achieved. The length directions of the fool-proof protrusion 33 and the fool-proof groove 34 are consistent with the installation direction of the socket 2, namely consistent with the axial direction of the fool-proof piece 3. When the specific implementation, the fool-proof structures on the positive connector and the negative connector are different, for example, the width, the number, the angle and the like of the fool-proof protrusion 33 or the fool-proof groove 34 are different, so that the plug 1 of the negative connector cannot be inserted into the socket 2 of the positive connector, or the plug 1 of the positive connector cannot be inserted into the socket 2 of the negative connector, and the fool-proof effect can be effectively achieved.

Prevent that slow-witted 3 opens and is equipped with annular protrusion 35 on the one end periphery that has mounting hole 31, as shown in fig. 13, prevent that slow-witted protruding 33 highly with annular protrusion 35 highly uniform, prevent that slow-witted protruding 33 one end with annular protrusion 35 is connected, prevent that slow-witted protruding 33 the other end with prevent that slow-witted 3 opens and has the one end parallel and level of patchhole 32. Of course, in practical applications, the fool-proof protrusion 33 may not be connected to the annular protrusion 35. The inner chamber of link 21 inwards includes first inner chamber 212 and second inner chamber 213 in proper order from the tip, the diameter of first inner chamber 212 is greater than the diameter of second inner chamber 213, form backstop face 214 between first inner chamber 212 and the second inner chamber 213, prevent slow-witted structure and locate on the inner wall of second inner chamber 213 link 21 inserts during holding the chamber, backstop face 214 can with annular protruding 35 is contradicted and is connected, plays spacing effect. It should be noted that, through reasonable structural design and size design, when a wrong plug 1, such as the plug 1 of a negative connector, is inserted into the socket 2 of a positive connector, the fool-proof piece 3 on the plug 1 of the negative connector can only be inserted into the first inner cavity 212 of the connection end 21 of the socket 2 of the positive connector, and at this time, the contact pin in the socket 2 is located outside the female terminal 1112 or cannot be inserted into the female terminal 1112, and no communication can be realized between the plug 1 and the socket 2.

As shown in fig. 14, there is shown another fool-proof member 3 having fool-proof grooves 34 formed on the outer wall thereof. As can be seen from the figure, one end of the fool-proof groove 34 penetrates through one end of the fool-proof piece 3 where the insertion hole 32 is opened, and the other end of the fool-proof groove 34 does not penetrate through one end of the fool-proof piece 3 where the mounting hole 31 is opened. Work as plug 1 installs on socket 2, socket 2's 21 covers of link establish when preventing slow-witted 3 is last, the corresponding prevent slow-witted arch 33 on the 21 inner walls of link insert to prevent in the slow-witted recess 34 on preventing slow-witted 3, until prevent that slow-witted arch 33's one end with prevent that slow-witted recess 34's inner end is contradicted, accomplish the installation.

In a further embodiment, the inner wall of the fool-proof member 3 is provided with a chamfer at the edge of the mounting hole 31, so as to ensure that the fool-proof member 3 can be smoothly sleeved on the guide tube 116.

The adoption is in the fool-proof mode of fool-proof piece 3 is established to the cover on the stand pipe 116, plays the structure on the one hand and prevents fool, and it is better to prevent the fool-proof effect, and on the other hand also can increase the distance between socket fixing plate 22 and the plug 1, can make the connecting bolt compatibility that uses on the socket fixing plate 22 stronger, need not adopt single special bolt again.

The embodiment further provides a locking method of the connector, which comprises the following specific steps: when the retaining member 13 is installed in the counterbore 115 of the plug 1, the interference part 1323 of the retaining member 13 is in interference connection with the bottom of the counterbore 115, the retaining part 134 of the retaining member 13 is in snap connection with the inner wall of the counterbore 115, the clamping part 1332 of the retaining member 13 retaining part 133 extends into the accommodating cavity of the plug 1, and in a natural state, the side surface of the pressing part 131 of the retaining member 13, which is far away from the rebounding part 132, is flush with the side surface of the plug 1; when the socket 2 is installed, the connecting end 21 of the socket 2 is inserted into the accommodating cavity of the plug 1 through the second connecting port 114 of the plug 1, the annular limiting protrusion 211 on the connecting end 21 of the socket 2 is firstly in chamfer contact with the cambered surface edge of the clamping part 1332 close to the accommodating cavity, along with the continuous insertion of the socket 2, the clamping part 1332 is pushed by the annular limiting protrusion 211 to move along the axial direction of the counter bore 115, the elastic part 1322 of the rebounding part 132 of the locking part 13 is compressed and deformed until the annular limiting protrusion 211 is separated from the clamping part 1332, the elastic part 1322 rebounds to drive the clamping part 1332 to move back to the natural state position, and the side surface of the clamping part 1332 is in interference connection with the side surface of the annular limiting protrusion 211 far from the plug 1, so that the annular limiting protrusion 211 is clamped; when the socket 2 is disassembled, the pressing part 131 of the locking piece 13 is pressed, the locking piece 13 moves along the axial direction of the counter bore 115, the elastic part 1322 of the elastic part 132 of the locking piece 13 is compressed and deformed until the clamping part 1332 is separated from the annular limiting bulge 211, the connecting end 21 of the socket 2 can be separated from the accommodating cavity of the socket 2, then the elastic part 1322 of the elastic part 132 of the locking piece 13 is rebounded, and the locking piece 13 moves back to the natural state position; when the retaining member 13 moves back to the natural position, the retaining portion 134 of the retaining member 13 abuts against the protrusion 1341 and one end of the elongated slot 1342 between the inner walls of the counter bore 115, preventing the retaining member 13 from moving further away from the bottom of the counter bore 115.

As used herein, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, including not only those elements listed, but also other elements not expressly listed.

In this document, the terms front, back, upper and lower are used to define the components in the drawings and the positions of the components relative to each other, and are used for clarity and convenience of the technical solution. It is to be understood that the use of the directional terms should not be taken to limit the scope of the claims.

The features of the embodiments and embodiments described herein above may be combined with each other without conflict.

The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.

Claims (9)

1. The utility model provides a connector, its characterized in that, it includes plug (1) and socket (2), plug (1) has and holds chamber, connector and counter bore (115) all with hold the chamber intercommunication, socket (2) have link (21), have annular spacing arch (211) on link (21), through with link (21) are installed it makes to hold the intracavity plug (1) and socket (2) are connected, the axis direction of counter bore (115) with the axis direction of connector is perpendicular, install retaining member (13) in counter bore (115), retaining member (13) can with annular spacing arch (211) are kept away from the one side conflict of plug (1) is connected, and then blocks socket (2).

2. The connector according to claim 1, characterized in that a connecting assembly (111) is arranged in the plug (1), the connecting assembly comprises a first connecting port (113) and a second connecting port (114), a plug tail cover (12) is clamped on the first connecting port (113), a connecting wire (4) can pass through the plug tail cover (12) to be connected with the connecting assembly (111), and the connecting end (21) of the socket (2) can be inserted into the accommodating cavity through the second connecting port (114) to be connected with the connecting assembly (111).

3. The connector according to claim 1, wherein the locking member (13) comprises a pressing portion (131), a resilient portion (132) and a locking portion (133), the resilient portion (132) and the locking portion (133) are vertically arranged on one side of the pressing portion (131), when the locking member (13) is installed in the counter bore (115), one end, away from the pressing portion (131), of the resilient portion (132) is in interference connection with the bottom of the counter bore (115), and the locking portion (133) can be in interference connection with one side, away from the plug (1), of the annular limiting protrusion (211).

4. A connector according to claim 3, wherein the resilient portion (132) is resilient, the resilient portion (132) being compressible along its length under an external force and resilient along its length in a natural state.

5. The connector of claim 4, wherein the resilient portion (132) has a resilient support (1321), an end of the resilient portion (132) remote from the resilient support (1321) is provided with an interference portion (1323), the interference portion (1323) is parallel to the bottom of the counterbore (115), and the resilient portion (132) is in interference connection with the bottom of the counterbore (115) through the interference portion (1323).

6. The connector according to claim 5, characterized in that the retaining member (13) further comprises a retaining portion (134), the retaining portion (134) is vertically arranged on one side of the pressing portion (131) where the rebounding portion (132) or the retaining portion (133) is arranged, the retaining portion (134) is in snap connection with the inner wall of the counter bore (115), and when the rebounding portion (132) rebounds to the initial state, the retaining portion (134) can prevent the retaining member from moving continuously in a direction away from the bottom of the counter bore (115).

7. The connector according to claim 6, wherein a limiting groove (1333) is further formed in one side surface of the locking portion (133) away from the accommodating cavity, the length direction of the limiting groove (1333) is consistent with that of the locking portion (133), a limiting block (1151) is arranged at the position, corresponding to the limiting groove (1333), of the bottom of the counter bore (115), the height direction of the limiting block (1151) is consistent with the axial direction of the counter bore (115), and the locking member (13) can slide on the limiting block (1151) through the limiting groove (1333).

8. A connector according to claim 3, characterized in that the retaining member (13) is in a natural state, the side of the pressing portion (131) remote from the resilient portion (132) being flush with the side of the plug (1);

and a flared opening (1152) is formed at the opening of the counter bore (115).

9. The connector according to claim 2, wherein one end of the plug tail cover (12) connected with the first connecting port (113) is provided with a plurality of inserting portions (121) and/or a plurality of buckling portions (122), a plurality of inserting slots and/or a plurality of clamping slots are arranged on the plug (1) corresponding to the buckling positions of the plug tail cover (12), the inserting slots correspond to the inserting portions (121) one by one, and the clamping slots correspond to the buckling portions (122) one by one.

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