Connector and connector assembly

Abstract

The invention relates to the technical field of conductive connecting devices, in particular to a connector and a connector assembly. The connector comprises a shell and a terminal, the shell is internally provided with an installation cavity allowing the terminal to be installed in from the tail of the shell, the shell is provided with a notch, the notch is provided with a retaining claw overhanging towards the tail of the shell, the tail end of the retaining claw is provided with a retaining convex part, the terminal is provided with a retaining matching groove, and the retaining matching groove is matched with the retaining claw. The retaining claw has an avoiding state for avoiding the terminal when the terminal is mounted in the mounting cavity and a retaining state for elastically deforming towards the interior of the mounting cavity to enable the retaining convex part to extend into the retaining matching groove of the terminal; and the retaining claw is provided with a jacking limiting part for jacking the inner wall of the adaptive connector and / or a retaining limiting part which is clamped with the notch part of the shell and forms outward retaining fit, so that the retaining claw is kept in a retaining state. The inner wall of the adapter connector and the rigid part of the shell are used for keeping the retaining state of the retaining claw, so that a reliable retaining effect is formed on the terminal, and the terminal is not easy to retreat to influence the plugging performance.

Description

Technical Field

[0001] The present invention relates to the technical field of conductive connection devices, and in particular to a connector and a connector assembly. Background Art

[0002] The terminals of the new energy electrical connector are crimped and fixed with the cables and then installed as a whole in the connector housing. In order to prevent the cables from driving the terminals backward, a wire clamp is currently used to fix the cables. For example, a connector disclosed in the Chinese utility model patent with authorization announcement number CN219553931U comprises a contact, a connector housing and a wire fixing assembly. The contact is a terminal fixedly connected to the cable. The wire fixing assembly comprises a tail cover and a wire fixing clamp. The wire fixing clamp is provided with a plurality of elastic claws. When the tail cover is installed on the housing, the tail cover squeezes the elastic claws of the wire fixing clamp, causing the elastic claws to gradually deform and tighten. The elastic claws are used to clamp the cable to fix the cable. When the cable is fixed, the terminal position is fixed.

[0003] The above-mentioned structure that uses a wire clamp to fix the cable to prevent the terminal from retreating mainly uses the friction force formed by the clamping action of the elastic claw on the cable. The anti-retreat fixing function is limited. It can prevent the terminal from retreating in some scenes where the cable force is small. However, the tail cables of many new energy electrical connectors are relatively hard and curved, and the stress on the cables is relatively large. It is a multi-core electrical connector product that connects multiple cables. When the plug connector is plugged into the matching socket connector, it is easy for the operator to use greater force to cause the plug connector housing and the cable to move relative to each other, and then the terminal retreats under the pull of the cable, affecting the reliability of the connector plug-in conduction. In addition, a wire clamp needs to be set up separately, which is inconvenient to assemble and not conducive to reducing the cost of the connector. Summary of the invention

[0004] The object of the present invention is to provide a connector to solve the problem that the current connector uses a wire clamp to fix the cable to prevent the terminal from retreating, but the terminal is still prone to retreat when subjected to large force, affecting the plug-in performance; the object of the present invention is also to provide a connector assembly to solve the above problem.

[0005] The technical solution of the connector of the present invention is: A connector comprises a shell and a terminal, wherein a mounting cavity is provided in the shell for the terminal to be installed from the rear end of the shell, a notch is provided on the shell and a back-moving claw is provided at the notch and cantilevered toward the rear end of the shell, a back-moving protrusion is provided at the end of the back-moving claw, and a back-moving matching groove is provided on the terminal. The back-moving claw has a giving way state to avoid the terminal when the terminal is installed in the mounting cavity, and a back-moving state to elastically deform into the mounting cavity so that the back-moving protrusion extends into the back-moving matching groove of the terminal, and the back-moving claw is provided with a pressing limit portion for pressing against the inner wall of the adapter connector and / or a stopping limit portion for engaging with the notch of the shell and forming an outward stopping match to keep the back-moving claw in the back-moving state.

[0006] Beneficial effects: The present invention provides a connector which utilizes a spring claw on a connector shell to form a rigid retaining structure, wherein the retaining claw on the connector shell cantilevers toward the rear of the shell; when the retaining claw is in the out-of-the-way state, the retaining claw can avoid the terminal so that the terminal can be installed into the mounting cavity from the rear of the shell; when the retaining claw is in the retaining state, the retaining claw elastically deforms into the mounting cavity, and the retaining protrusion at the end of the retaining claw extends into the retaining mating groove of the terminal, and at the same time, the retaining claw is pressed against the inner wall of the adapter connector or the notch of the shell is used to engage with the retaining claw. The stopping fit can keep the stopping claw in the stopping state. The stopping protrusion of the stopping claw can stop the terminal, and the stopping claw will not be deformed outward and exit the stopping fitting groove when it is pressed by the inner wall of the adapter connector and stopped by the notch of the shell. The rigid part of the inner wall of the adapter connector and the shell can be used to maintain the stopping state of the stopping claw. The stopping claw will not be deformed by the retreat force of the terminal, so that the stopping protrusion of the stopping claw can form a reliable stopping effect on the terminal, which is conducive to bearing a larger force and is not easy to cause the terminal to retreat and affect the plug-in performance.

[0007] Furthermore, the stop protrusion has a stop surface for cooperating with the terminal to prevent the terminal from retreating toward the rear of the shell. A barb is provided on the side of the stop protrusion facing away from the stop surface, and the barb forms a stop limit portion. The notch portion of the shell has a limit edge corresponding to the end of the stop protrusion, and the limit edge is engaged with the barb.

[0008] Furthermore, the stop and limit portion and / or the limit edge are provided with a guiding inclined surface for guiding the deformation of the stop claw when the stop and limit portion is engaged with the limit edge.

[0009] Furthermore, a limiting surface at the notch portion of the shell for stopping and cooperating with the stopping and limiting portion is located on the inner wall of the installation cavity.

[0010] Furthermore, when the back-stop claw is not subjected to external force, it cantilevers out of the installation cavity to form a yielding state.

[0011] Furthermore, the outer side surface of the end of the anti-retraction claw facing away from the anti-retraction protrusion is an avoidance inclined surface, and the outer side surface of the main body of the anti-retraction claw is arranged at an angle to the avoidance inclined surface.

[0012] Further, when the retraction-stopping claw is in the retraction-stopping state, the retraction-stopping claw does not protrude from the outer wall surface of the main body portion of the housing.

[0013] Furthermore, an anti-spring-back arm is provided on the terminal, and a stop portion is provided in the installation cavity for forming a stop fit with the end of the anti-spring-back arm of the terminal in a direction toward the rear of the shell.

[0014] Furthermore, the blocking portion is provided with a groove for the end of the anti-bounce arm to extend into.

[0015] The technical solution of the connector assembly of the present invention is: A connector assembly comprises a connector and an adaptor connector adapted to be plugged into the connector, the connector comprising a shell and a terminal, a mounting cavity is provided in the shell for the terminal to be installed from the rear end of the shell, a notch is provided on the shell and a back-moving claw is provided at the notch and cantilevered toward the rear end of the shell, a back-moving protrusion is provided at the end of the back-moving claw, a back-moving mating groove is provided on the terminal, the back-moving claw has a giving-way state to avoid the terminal when the terminal is installed in the mounting cavity and a back-moving state to elastically deform into the mounting cavity so that the back-moving protrusion extends into the back-moving mating groove of the terminal, the back-moving claw is provided with a pressing limit portion for pressing against the inner wall of the adaptor connector and / or a stopping limit portion for engaging with the notch of the shell and forming an outward stopping fit to keep the back-moving claw in the back-moving state.

[0016] Beneficial effects: The present invention provides a connector which utilizes a spring claw on a connector shell to form a rigid retaining structure, wherein the retaining claw on the connector shell cantilevers toward the rear of the shell; when the retaining claw is in the out-of-the-way state, the retaining claw can avoid the terminal so that the terminal can be installed into the mounting cavity from the rear of the shell; when the retaining claw is in the retaining state, the retaining claw elastically deforms into the mounting cavity, and the retaining protrusion at the end of the retaining claw extends into the retaining mating groove of the terminal, and at the same time, the retaining claw is pressed against the inner wall of the adapter connector or the notch of the shell is used to engage with the retaining claw. The stopping fit can keep the stopping claw in the stopping state. The stopping protrusion of the stopping claw can stop the terminal, and the stopping claw will not be deformed outward and exit the stopping fitting groove when it is pressed by the inner wall of the adapter connector and stopped by the notch of the shell. The rigid part of the inner wall of the adapter connector and the shell can be used to maintain the stopping state of the stopping claw. The stopping claw will not be deformed by the retreat force of the terminal, so that the stopping protrusion of the stopping claw can form a reliable stopping effect on the terminal, which is conducive to bearing a larger force and is not easy to cause the terminal to retreat and affect the plug-in performance.

[0017] Furthermore, the stop protrusion has a stop surface for cooperating with the terminal to prevent the terminal from retreating toward the rear of the shell. A barb is provided on the side of the stop protrusion facing away from the stop surface, and the barb forms a stop limit portion. The notch portion of the shell has a limit edge corresponding to the end of the stop protrusion, and the limit edge is engaged with the barb.

[0018] Furthermore, the stop and limit portion and / or the limit edge are provided with a guiding inclined surface for guiding the deformation of the stop claw when the stop and limit portion is engaged with the limit edge.

[0019] Furthermore, a limiting surface at the notch portion of the shell for stopping and cooperating with the stopping and limiting portion is located on the inner wall of the installation cavity.

[0020] Furthermore, when the back-stop claw is not subjected to external force, it cantilevers out of the installation cavity to form a yielding state.

[0021] Furthermore, the outer side surface of the end of the anti-retraction claw facing away from the anti-retraction protrusion is an avoidance inclined surface, and the outer side surface of the main body of the anti-retraction claw is arranged at an angle to the avoidance inclined surface.

[0022] Further, when the retraction-stopping claw is in the retraction-stopping state, the retraction-stopping claw does not protrude from the outer wall surface of the main body portion of the housing.

[0023] Furthermore, an anti-spring-back arm is provided on the terminal, and a stop portion is provided in the installation cavity for forming a stop fit with the end of the anti-spring-back arm of the terminal in a direction toward the rear of the shell.

[0024] Furthermore, the blocking portion is provided with a groove for the end of the anti-bounce arm to extend into. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is a schematic diagram of a connector assembly according to an embodiment of the present invention; Figure 2 for Figure 1 A schematic diagram of the structure of the plug in FIG. Figure 3 for Figure 2 A schematic diagram showing that the stop claw of the plug inner housing is in a released state; Figure 4 for Figure 2 A schematic diagram showing that the stop claw of the plug inner housing is in a stop state; Figure 5 for Figure 1 A schematic diagram of one view of the jack terminal in FIG. Figure 6 for Figure 1 A schematic diagram of another perspective of the jack terminal; Figure 7 for Figure 1 A schematic diagram of the installation structure of the jack terminal and the inner housing of the plug; Figure 8 for Figure 7 Schematic diagram of the anti-retraction arm of the socket terminal and the blocking matching structure of the inner shell of the plug.

[0026] In the figure: 100. Plug; 11. jack terminal; 111. anti-retraction matching groove; 112. wire pressing part; 113. sheath; 114. anti-retraction arm; 115. contact spring; 116. stopper slope; 12. Plug inner housing; 120. Terminal mounting cavity; 121. Retraction claw; 122. Retraction convex portion; 123. Barb; 124. Avoidance inclined surface; 125. Limiting edge; 13. Cable; 14. Plug housing; 200, socket; 21, pin; 22, socket housing. DETAILED DESCRIPTION

[0027] The connector of the present invention utilizes the rigid parts of the inner wall of the adapter connector and the shell to maintain the stop claw on the shell in the stop state of the terminal, which is conducive to forming a reliable blocking effect and is not easy to cause the terminal to retreat and affect the plug-in performance.

[0028] Embodiments of the connector assembly of the present invention: The connector assembly includes a connector and an adapter connector that is adapted to be plugged into the connector. The connector includes a shell and a terminal. A mounting cavity is provided in the shell for the terminal to be installed from the rear of the shell. A notch is provided on the shell and a back-moving claw is provided at the notch and extends toward the rear of the shell. A back-moving protrusion is provided at the end of the back-moving claw. A back-moving matching groove is provided on the terminal. The back-moving claw has a state of avoiding the terminal when the terminal is installed in the mounting cavity and a back-moving state of elastically deforming into the mounting cavity so that the back-moving protrusion extends into the back-moving matching groove. The back-moving claw is provided with a pressing limit portion for pressing against the inner wall of the adapter connector and a stopping limit portion for engaging with the notch of the shell and forming an outward stopping match to keep the back-moving claw in the back-moving state, so as to play a reliable back-moving role for the terminal. When the terminal is subjected to a large pulling force from the cable, it is not easy for the terminal to be pulled off.

[0029] Specifically, Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 As shown, the connector is a plug 100, and the matching connector that is adapted to be plugged with the connector is a socket 200. The connector assembly includes a plug and a socket. The socket 200 is fixed on the corresponding device. The rear end of the plug 100 is connected to a cable 13. When the plug 100 and the socket 200 are plugged together, the operator picks up the plug 100 and plugs it into the socket 200. The plug 100 includes a jack terminal 11, a plug inner shell 12, and a plug outer shell 14. The jack terminal 11 is installed in the plug inner shell 12, and the plug inner shell 12 is installed in the plug outer shell 14. A metal shielding structure is provided between the plug outer shell 14 and the plug inner shell 12. The plug inner shell 12 is the shell of the connector, and the jack terminal 11 is the terminal of the connector. The socket 200 includes a socket shell 22 and a pin 21 installed in the socket shell 22. The pin 21 is adapted to be plugged with the jack terminal 11.

[0030] With the tail of the plug 100 as its rear part and the head as its front part, a terminal installation cavity 120 is provided in the inner shell 12 of the plug, which runs through from front to back. The terminal installation cavity 120 is an installation cavity for the socket terminal 11 to be installed from the rear of the inner shell 12 of the plug. The rear opening of the terminal installation cavity 120 is a terminal installation entrance, and the front opening is an insertion entrance for the pin 21. A notch is provided on the inner housing 12 of the plug, and a retaining claw 121 is provided at the notch and cantilevered toward the tail of the inner housing 12 of the plug, a retaining protrusion 122 is provided at the end of the retaining claw 121, and a retaining mating groove 111 is provided on the jack terminal 11. The retaining claw 121 has a making way state in which it cantilevers out of the terminal mounting cavity 120 to make way for the terminal mounting cavity 120 when not subject to external force, and a retaining state in which it elastically deforms into the terminal mounting cavity 120 under the action of external force so that the retaining protrusion 122 enters the terminal mounting cavity 120 and extends into the retaining mating groove 111. The retaining claw 121 is provided with a pressing limit portion for pressing the inner wall of the socket housing 22 and a stopping limit portion for engaging with the notch of the inner housing 12 of the plug and forming an outward stopping fit to keep the retaining claw 121 in the retaining state.

[0031] The stop claw 121 is formed integrally with the main body of the plug inner housing 12. The notch of the plug inner housing 12 corresponding to the stop claw 121 allows the stop claw 121 to deform into the terminal installation cavity 120. The stop claw 121 is a cantilevered spring claw, the root of which is connected to the front edge of the notch, and the other edges of the notch are spaced apart from the stop claw 121 when the stop claw 121 is in the let-away state. When the stop claw 121 is not subjected to external force, it is in the let-away state, and the stop claw 121 is cantilevered outside the terminal installation cavity 120, that is, the stop claw 121 tilts outward to let the terminal installation cavity 120 away, so that the jack terminal 11 can be installed into the terminal installation cavity 120 from the rear of the plug inner housing 12 without interfering with the stop claw 121.

[0032] The retaining claw 121 can be elastically deformed into the terminal mounting cavity 120 under the action of external force, and the retaining protrusion 122 at the end of the retaining claw 121 enters the terminal mounting cavity 120, and the retaining protrusion 122 extends into the retaining matching groove 111 of the socket terminal 11. That is, when the socket terminal 11 is installed in the terminal mounting cavity 120, the retaining matching groove 111 of the socket terminal 11 is located at a position corresponding to the retaining protrusion 122 at the end of the retaining claw 121. In this way, the retaining protrusion 122 can enter the retaining matching groove 111 by pressing the retaining claw 121 with external force.

[0033] The stop convex portion 122 protrudes inwardly based on the end of the stop claw 121, and the direction from the root to the end of the stop claw 121 is its length direction, that is, the overhang direction, and the inward direction is the direction toward the terminal installation cavity 120. The stop convex portion 122 has a stop surface for blocking and cooperating with the socket terminal 11 to prevent the socket terminal 11 from retreating toward the tail of the plug inner housing 12. The side of the stop convex portion 122 facing away from the stop surface is provided with a barb 123, and the barb 123 forms a stop limit portion. The notch portion of the plug inner housing 12 has a limit edge 125 corresponding to the end of the stop convex portion 122, and the limit edge 125 is engaged with the barb 123. The limit edge 125 is the rear side edge of the notch portion. By pressing the stop claw 121 with external force, the stop claw 121 is deformed, and the barb 123 is made to pass over the limiting edge 125 to form a snap fit. Under the deformation of the stop claw 121, the barb 123 pushes outward against the limiting edge 125 and abuts against it. The limiting edge 125 forms an outward stop for the barb 123, preventing the stop claw 121 from resetting, thereby keeping the stop claw 121 in a state where the stop convex portion 122 extends into the terminal installation cavity 120. The barb 123 is used to cooperate with the rear edge of the notch to form a stop limit, which has a simple structure and is easy to manufacture. In other embodiments, a stop limit portion can also be provided on both sides of the width direction of the stop claw to form a snap fit with the left and right side edges of the notch, and the left and right side edges of the notch are used to form an outward stop for the stop claw in the stop state.

[0034] The head of the socket housing 22 is provided with an inserting cavity for the plug inner housing 12 to be inserted into. When the plug 100 and the socket 200 are normally plugged into each other, the head of the plug inner housing 12 is inserted into the inserting cavity of the socket housing 22, and the portion of the plug inner housing 12 provided with the stop claw 121 is also inserted into the inserting cavity of the socket housing 22. The portion where the limiting edge 125 of the plug inner housing 12 is located also extends into the inserting cavity of the socket housing 22. The stop claw 121 enters the socket housing 22 in a stop state. The gap between the stop claw 121 and the cavity wall of the inserting cavity of the socket housing 22 is very small. When the jack terminal 11 retreats, the plug The hole terminal 11 and the retaining protrusion 122 form a stop, and the retaining claw 121 is subjected to force and tends to deform outward and detach from the terminal installation cavity 120. At this time, in addition to the limiting edge 125 that can prevent the retaining claw 121 from deforming, when the outer side surface of the retaining claw 121 presses against the cavity wall of the plug-in cavity of the socket shell 22, the cavity wall of the plug-in cavity of the socket shell 22 can also prevent it from deforming outward by pressing the retaining claw 121, and it will not deform outward and withdraw from the retaining mating groove 111, thereby maintaining the blocking effect on the socket terminal 11, and the outer side surface of the retaining claw 121 constitutes a pressing limit portion for the adapter connector to press.

[0035] The inner wall of the socket 200 and the rigid parts of the inner shell 12 of the plug are used to maintain the stopping state of the stopping claw 121. The stopping claw 121 will not be deformed and fall out of the stopping matching groove 111 due to the retreat force of the socket terminal 11, so that the stopping protrusion 122 of the stopping claw 121 can form a reliable blocking effect on the terminal, which is conducive to bearing a large force and is not easy to cause the terminal to retreat. Preventing the terminal from retreating here means not allowing the terminal to retreat significantly or even fall out of the terminal installation cavity and lose the normal plug-in contact conduction function.

[0036] By engaging the limiting edge 125 with the anti-retraction claw 121, the anti-retraction claw 121 can be in the anti-retraction state before the plug 100 and the socket 200 are plugged in, thereby ensuring that the plug terminal 11 can be prevented from retraction when the plug 100 and the socket 200 are plugged in, avoiding the terminal from retracting due to excessive force applied by the operator during the plug-in operation, and ensuring that the terminal does not retract during the plug-in operation. At the same time, the anti-retraction claw 121 is limited by the inner wall of the socket housing 22 with high structural strength to improve the anti-retraction reliability. In other embodiments, a relatively large gap can be made between the inner wall of the socket housing and the anti-retraction claw without forming a top pressure effect on the anti-retraction claw. At this time, the anti-retraction claw is limited by the limiting edge to maintain its anti-retraction state. In other embodiments, the limiting edge may not be provided, and the retaining claw is not engaged with the notch portion of the inner shell of the plug. When the plug and the socket are plugged together, the retaining claw enters the socket shell in an open state. During the plugging process, the inner wall of the socket shell presses the retaining claw to put the retaining claw into the retaining state. In order to maintain the position of the jack terminal in the terminal mounting cavity, the jack terminal should be installed in the terminal mounting cavity with a limit position when the jack terminal is installed.

[0037] The barb 123 and the limiting edge 125 are respectively provided with guiding inclined surfaces for guiding the deformation of the backstop claw 121 when the barb 123 is engaged with the limiting edge 125. The guiding inclined surface on the barb 123 is inclined inward and faces away from the backstop surface on the barb 123. The guiding inclined surface on the limiting edge 125 is inclined outward and is spaced opposite to the guiding inclined surface on the barb when the backstop claw 121 is in the let-away state. The inclined surface cooperates to facilitate the forward deformation of the end of the backstop claw 121 and to cross the limiting edge 125 when the backstop claw 121 is engaged, which is more labor-saving. In other embodiments, the guiding inclined surface can also be set only on the barb or only on the limiting edge. In other embodiments, the outer edge of the limiting edge can also be rounded to facilitate the engagement of the guiding backstop claw.

[0038] The inner side surface of the limiting edge 125 and the outer side surface of the barb 123 form a stop fit, and the inner side surface of the limiting edge 125 constitutes a limiting surface and is located on the inner wall of the terminal installation cavity 120. The entire wall thickness of the limiting edge of the plug inner shell is used to limit the barb of the stop claw, which has a simple structure and reliable limiting. In other embodiments, when the limiting edge is relatively thick, a forward clamping groove can also be set at the limiting edge to allow the barb to be clamped into the clamping groove.

[0039] When the stop claw 121 is not subjected to external force, the stop claw 121 is in a state of letting go, and the stop protrusion 122 does not enter the terminal installation cavity 120, but extends into the space surrounded by the notch of the plug inner shell 12, so that when the jack terminal is installed into the terminal installation cavity, it can be ensured that the jack terminal is not blocked, which is convenient for operation. In other embodiments, the innermost top small part of the stop protrusion can also be extended into the terminal installation cavity, that is, the top of the stop protrusion passes through the notch and protrudes inward from the cavity wall of the terminal installation cavity. At this time, when the jack terminal is installed, the jack terminal will push the top of the stop protrusion outward to make the stop claw in a state of letting go of the terminal. When the terminal is installed in place, the stop groove of the terminal corresponds to the position of the stop protrusion, and the stop protrusion is reset so that its top extends into the stop groove, which can play a preliminary limit role for the terminal. After the terminal is installed, the stop claw is pressed again to make the stop claw engage with the limit edge.

[0040] When the stop claw 121 is in the stop state, the barb 123 abuts against the limiting edge 125 in a direction perpendicular to the terminal installation direction, which is from back to front. The outward side of the barb 123 is lower than the outer side of the end of the stop claw 121 and is parallel to the center line of the terminal installation cavity 120 when the stop claw is in the stop state. The limiting edge 125 provides positive pressure to the stop claw 121, and the limit is reliable, which can withstand the relatively large force transmitted to the stop claw from the jack terminal.

[0041] The outer side surface of the end of the stop claw 121 facing away from the stop protrusion 122 is an inclined surface, which is a position-avoiding inclined surface 124. The outer side surface of the main body of the stop claw 121 is set at an angle with the position-avoiding inclined surface 124 at the end of the stop claw 121, which can prevent the end of the stop claw 121 from tilting too high. When assembling the plug, the stop claw is pressed into the terminal installation cavity using a tooling that is contoured with the socket housing. In the process of inserting the inner housing of the plug into the contoured insertion cavity of the tooling, the stop claw contacts the tooling smoothly to avoid large friction resistance. In other embodiments, the position-avoiding inclined surface may not be provided.

[0042] When the stop claw 121 is in the stop state, the stop claw 121 does not protrude from the outer wall surface of the main body of the plug inner housing 12, and the outer side surface of the main body of the stop claw 121 is flush with the outer wall surface of the main body of the plug inner housing 12, so as to avoid large resistance when the plug 100 and the socket 200 are plugged together. In other embodiments, the outer side surface of the end of the stop claw can also be slightly protruded outward from the outer wall surface of the main body of the plug inner housing to ensure normal plugging.

[0043] Combination Figure 6 , Figure 7 , Figure 8 The jack terminal 11 is provided with an anti-retraction arm 114, and the terminal installation cavity 120 is provided with a stopper portion for forming a stopper with the end of the anti-retraction arm 114 of the jack terminal 11 in the direction toward the rear of the plug inner housing 12, which is conducive to ensuring that the jack terminal 11 is installed in place in the terminal installation cavity 120, and can also play a role in preventing the jack terminal 11 from retreating. The front part of the plug inner housing 12 is a rectangular structure, and the stopper portion and the anti-retraction claw that cooperate with the anti-retraction arm 114 are arranged on different side walls of the front part of the plug inner housing 12. In other embodiments, the anti-retraction arm may be omitted as needed.

[0044] The stopper portion of the plug inner housing 12 is provided with a groove for the end of the anti-bounce arm 114 to extend into, and the groove has an inclined inner wall surface to form a stopper slope 116. The end of the anti-bounce arm 114 forms a stopper fit with the stopper slope 116 to prevent the anti-bounce arm 114 from slipping off the stopper portion. In other embodiments, a forward plane can also be used as a stopper surface for stopping the end of the anti-bounce arm.

[0045] The jack terminal 11 has a wire pressing part 112 for crimping the cable 13 and a plug-in part for plugging with the pin 21. The jack terminal 11 includes a main body and a sheath 113. The main body is made of copper, and the sheath is made of stainless steel. The sheath 113 has better elasticity. The crimping part 112 is located at the rear of the main body, and the plug-in part is located at the front of the main body. The plug-in part includes two contact springs 115 arranged opposite to each other. The plug-in part is provided with a sheath 113, and the sheath 113 is fixedly connected to the plug-in part. The anti-retraction arm 114 is arranged on the sheath 113 and the left and right side walls of the sheath are provided with the anti-retraction arm 114. The anti-retraction matching groove 111 is located between the wire pressing part 112 and the plug-in part. The space between the sheath 113 and the wire pressing part 112 is used to form the anti-retraction matching groove 111. The anti-retraction protrusion 122 can be matched with the rear end of the sheath 113, and there is no need to set a separate anti-retraction matching groove. The structure is simple and easy to manufacture. In other embodiments, a withdrawal-proof matching groove may be separately provided on the sheath for the withdrawal-proof protrusion to extend into. In other embodiments, no sheath may be provided, and an anti-retraction arm may be provided on the plug-in portion of the terminal body. In other embodiments, the terminal of the connector may also be a pin, and correspondingly, the adapter connector may be provided with a socket terminal.

[0046] The plug is a four-core electrical connector connected to four cables. When in use, the rear cable is relatively hard and bent, and the cable stress is relatively large. During the plugging operation or during the working process, the cable exerts a large pulling force on the terminal. When the cable is subjected to excessive outward force, the terminal may withdraw outward, and the anti-retraction spring arm forms an elastic clamping limit structure with a small anti-retraction ability. When the force is relatively large, the spring arm on the terminal may fold, that is, the terminal folds forward and loses the anti-retraction effect. At this time, the rigid anti-retraction structure formed by the anti-retraction claw plays a secondary anti-retraction effect on the terminal to prevent the terminal from withdrawing, which can meet the terminal anti-retraction function when the cable is subjected to large force. The pull-out force of the anti-retraction claw of the four-core connector is above 300N, and the anti-retraction is reliable. In addition, the above-mentioned terminal anti-retraction structure can be used to cancel the wire clamp of the connector, which can reduce the cost of the connector and facilitate assembly.

[0047] Embodiments of the connector of the present invention: The connector in this embodiment has the same structure as the plug in the above-mentioned embodiment of the connector assembly, and will not be described in detail here.

[0048] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention is described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions recorded in the aforementioned embodiments without creative work, or replace some of the technical features therein with equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A connector, characterized in that: The invention comprises a shell and a terminal, wherein a mounting cavity is provided in the shell for the terminal to be installed from the rear of the shell, a notch is provided on the shell and a back-moving claw (121) is provided at the notch and cantilevered toward the rear of the shell, a back-moving protrusion (122) is provided at the end of the back-moving claw, and a back-moving matching groove (111) is provided on the terminal. The back-moving claw (121) has a state of avoiding the terminal when the terminal is installed in the mounting cavity, and a back-moving state of elastically deforming into the mounting cavity so that the back-moving protrusion (122) extends into the back-moving matching groove (111) of the terminal, and the back-moving claw (121) is provided with a pressing limit portion for pressing against the inner wall of the adapter connector and / or a stop limit portion for engaging with the notch of the shell and forming a back-moving matching outward to keep the back-moving claw in the back-moving state.

2. The connector according to claim 1, characterized in that: The stop-retraction protrusion (122) has a stop-retraction surface for cooperating with the terminal to prevent the terminal from retreating toward the rear of the shell, a barb (123) is provided on the side of the stop-retraction protrusion (122) facing away from the stop-retraction surface, the barb (123) forms a stop-limiting portion, and the notch portion of the shell has a limiting edge (125) corresponding to the end of the stop-retraction protrusion (122), the limiting edge (125) being engaged with the barb (123).

3. The connector according to claim 2, characterized in that: The stop limit portion and / or the limit edge (125) are provided with a guiding inclined surface for guiding the stop claw (121) to deform when the stop limit portion is engaged with the limit edge (125).

4. The connector according to claim 1, 2 or 3, characterized in that: The limiting surface at the notch of the shell body and used for blocking and cooperating with the blocking and limiting part is located on the inner wall of the installation cavity.

5. The connector according to claim 1, 2 or 3, characterized in that: When the back-stop claw (121) is not subjected to external force, it cantilevers out of the installation cavity to form a yielding state.

6. The connector according to claim 1, 2 or 3, characterized in that: The outer side surface of the end of the anti-retraction claw (121) facing away from the anti-retraction protrusion (122) is a position avoidance inclined surface (124), and the outer side surface of the main body of the anti-retraction claw (121) is arranged at an angle to the position avoidance inclined surface (124).

7. The connector according to claim 1, 2 or 3, characterized in that: When the stop claw (121) is in the stop state, the stop claw (121) does not protrude from the outer wall surface of the main body part of the shell.

8. The connector according to claim 1, 2 or 3, characterized in that: An anti-spring-back arm (114) is provided on the terminal, and a stopper portion is provided in the installation cavity for forming a stopper match with the end of the anti-spring-back arm (114) of the terminal in a direction toward the rear of the housing.

9. The connector according to claim 8, characterized in that: The blocking portion is provided with a groove into which the end of the anti-bounce arm (114) extends.

10. A connector assembly, characterized in that: It comprises a connector and an adapting connector adapted to be plugged with the connector, and the connector is the connector described in any one of claims 1 to 9.

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