CN219892487U - Electrical connector and electrical connector assembly - Google Patents

Abstract

The utility model discloses an electric connector and an electric connector assembly, which comprises an electric connector and a butt connector which are mutually spliced, wherein the electric connector comprises an insulating shell, the insulating shell is provided with a lock catch arm, the lock catch arm is provided with a lock catch part and a locking part of the butt connector, a CPA element is arranged on the lock catch arm and can move in a pre-locking position and a final locking position along the front-back direction, the CPA element is provided with a first arm and a limiting part extending from the first arm, the first arm is provided with a locking part which is blocked by the lock catch part and keeps the CPA element in the pre-locking position, when the electric connector and the butt connector are not spliced, if the lock catch arm is deflected due to the mistakenly touching of the CPA element, the lock catch arm presses the limiting part, so that the limiting part is pressed to limit the movement of the first arm, excessive displacement of the locking part towards the direction away from the lock catch part is restrained, the locking part is kept still blocked by the lock catch part to stay in the pre-locking position, and the CPA element is prevented from moving to the final locking position too early.

Description

Electrical connector and electrical connector assembly

[ field of technology ]

The present utility model relates to an electrical connector and an electrical connector assembly, and more particularly to an electrical connector and an electrical connector assembly relating to CPA devices.

[ background Art ]

An existing electrical connector is in plug-in fit with a mating connector, the electrical connector includes an insulating housing, an elastic latch arm is provided on the insulating housing to lock with a locking portion of the mating connector, a CPA member is mounted on the insulating housing and is capable of moving between a pre-locking position and a final locking position relative to the insulating housing, the CPA member has a first arm, the latch arm blocks a front end of the first arm to hold the CPA member in the pre-locking position, the latch arm can flex to release the blocking relationship with the first arm when receiving an external force, at this time, the CPA member can move from the pre-locking position to the final locking position, and when the CPA member is located in the final locking position, the CPA member can prevent the latch arm from flexing, thereby maintaining stable locking of the latch arm and the locking portion of the mating connector, and realizing a connector position assurance function.

However, when the electric connector is not in plug-in fit with the butt connector, the latch arm is easy to flex due to the fact that the latch arm is in error contact with the butt connector by external force, so that the latch arm and the first arm are separated in a tripping way, the blocking function of the latch arm to the CPA element is invalid, the CPA element can be moved from the pre-locking position to the final locking position before the electric connector is plugged in the butt connector, the latch arm cannot flex due to the fact that the CPA element is moved to the final locking position too early, the butt connector is difficult to be plugged into the electric connector, the problem that the CPA element is required to be manually moved back to the pre-locking position is solved, normal plug-in connection of the electric connector and the butt connector can be achieved, the plugging process is complicated, and if the CPA element is located in the final locking position and an operator is forced to plug in the butt connector, the latch arm and the first arm of the electric connector are subjected to strong extrusion to cause the risk of breaking damage, and under the requirement of gradual miniaturization of the electric connector, the first arm is located on one side of the flexible arm, deformation space of the latch arm cannot be increased, and the whole insulation shell is unfavorable for the requirement of customers.

Accordingly, there is a need for an improved electrical connector and electrical connector assembly that solves the above-mentioned problems.

[ utility model ]

In view of the above-mentioned problems, it is an object of the present utility model to provide an electrical connector and an electrical connector assembly, in which the first arm of the CPA member is provided on a side of the latch arm away from the deformation space, the volume is reduced, the restricting portion is extended from the first arm, the restricting portion is pressed by the unlocking portion when the CPA member is in the pre-lock position and when the latch arm is deflected by erroneous contact with the CPA member, the restricting portion restricts movement of the first arm, excessive displacement of the locking portion of the first arm in a direction away from the latch portion is suppressed, and the latch portion is prevented from being released from the locking portion, thereby preventing the CPA member from being prematurely moved from the pre-lock position to the final lock position.

In order to achieve the above purpose, the utility model adopts the following technical scheme: an electric connector comprises an insulating shell, wherein the insulating shell comprises a latch arm, the latch arm comprises at least one latch part and an unlocking part, the latch part is more forward than the unlocking part along the front-back direction, and a deformation space for the latch arm to flex is formed on one side of the latch arm; the CPA element is arranged on the lock catch arm and can move between a pre-locking position and a final-locking position relative to the lock catch arm along the front-back direction, the CPA element comprises a base and a first arm extending forwards from the base, the first arm is positioned on one side of the lock catch arm far away from the deformation space, at least one clamping part is arranged on the first arm in a protruding mode towards the lock catch part, at least one limiting part extends from the first arm and is positioned behind the clamping part and at least partially in front of the unlocking part, the limiting part comprises a first part extending along the up-down direction and a second part extending from the first part towards the unlocking part, the second part is positioned on one side of the unlocking part close to the deformation space, the front side of the clamping part is blocked by the lock catch part so as to keep the CPA element at the pre-locking position, the rear side of the unlocking part is blocked by the unlocking part so as to prevent the CPA element from being separated from the lock catch part from being separated from the pre-locking part in the back direction, and the CPA element is prevented from being deformed towards the release part along the release space when the CPA element is separated from the release part along the pre-locking position.

Further, at least one accommodating groove is formed in one side, away from the deformation space, of the latch arm, the second portion is accommodated in the accommodating groove, the accommodating groove extends backwards to the unlocking portion to enable the accommodating groove to be at least partially overlapped with the unlocking portion in the up-down direction, the unlocking portion blocks the second portion from being separated from the accommodating groove in the up-down direction, and when the CPA element is located at the pre-locking position and the first arm deflects, the second portion abuts against the bottom wall surface of the accommodating groove.

Further, the top surface of the locking portion is higher than the bottom wall surface of the accommodating groove along the up-down direction, the bottom wall surface of the accommodating groove continuously and flatly extends along the front-back direction, the first portion vertically extends downwards, the lower end of the first portion is lower than the bottom surface of the unlocking portion, the second portion horizontally extends from the lower end of the first portion to the rear side, and when the CPA element moves back and forth between the pre-locking position and the final-locking position, the second portion slides along the bottom wall surface of the accommodating groove.

Further, the top surface of the unlocking part is higher than the top surface of the locking part, the first arm is located on the upper side of the locking arm, two limiting parts are respectively extended from the left side and the right side of the first arm, two first parts are located on the front side of the unlocking part, the unlocking part simultaneously stops the two first parts from being displaced backwards, and the tail ends of the two second parts are free ends.

Further, a side blocking portion extends forward from both left and right sides of the unlocking portion, when the CPA member is located at the pre-lock position, the first arm is located at least partially between the two side blocking portions in the left and right directions, and the two side blocking portions block outer side surfaces of the two first portions, respectively.

Further, the latch arm includes two arms disposed at intervals along a left-right direction, the latch portion is protruded upward from each arm, a gap is formed between the two latch portions along the left-right direction, rear ends of the two arms are connected along the left-right direction to form the unlocking portion, the first arm extends from the base portion obliquely downward and then bends upward to form an inclined propping portion at the bottom of the front end of the first arm, the first arm is concavely formed at left and right sides of the propping portion to form two notches and two latch portions in a one-to-one correspondence along a front-rear direction, rear wall surfaces of the two notches form two locking portions, the propping portion is further in front than the locking portions, when the CPA element is located at the pre-locking position, the two latch portions at least partially enter the two notches and block front sides of the two locking portions, the propping portion is accommodated in the gap, and the two latch portions are connected with the two latch portions in a butting direction.

Further, two stopping bosses are protruded from the insulating housing, the two stopping bosses are located at left and right sides of the unlocking portion, a stopping portion is extended forward from each of the left and right sides of the base portion, when the CPA member is located at the pre-locking position, the stopping bosses located at the same side are vertically offset from the stopping portions to allow the CPA member to be actuated in the vertical direction, and when the CPA member is actuated downward to move the stopping portions to partially overlap with the stopping bosses in the front-rear direction, the stopping bosses stop the front side of the stopping portions to prevent the CPA member from moving forward from the pre-locking position, and when the CPA member is located at the final-locking position, the two stopping bosses are respectively stopped at the lower sides of the two stopping portions to prevent the CPA member from being displaced downward.

Further, two second arms extend forward from the base, the two second arms are respectively located at the left and right sides of the first arm, a sliding groove is concavely formed in one side, close to the first arm, of each second arm, the two sliding grooves are respectively engaged with the left and right sides of the latch arm so as to enable the CPA element to slide between the pre-locking position and the final-locking position, each second arm is connected with the first arm through a connecting portion along the left and right directions, and the limiting portion is more forward than the connecting portion.

Further, a hanging table is outwards protruded at the front end of each second arm along the left-right direction, the CPA element moves from the pre-locking position to the final locking position, and the two hanging tables are respectively clamped with the two buckling and holding grooves of the butt connector so that the CPA element is kept at the final locking position.

The utility model also adopts the following technical scheme: an electric connector assembly comprises an electric connector and a butt joint connector, wherein the electric connector is in plug-in fit, the electric connector comprises an insulating shell, the insulating shell comprises a lock catch arm, the lock catch arm comprises at least one lock catch part and an unlocking part, the lock catch part is more forward than the unlocking part along the front-back direction, a deformation space for the lock catch arm to flex is formed on one side of the lock catch arm, the butt joint connector comprises a butt joint shell, and the butt joint shell comprises at least one locking part and the lock catch part which are matched to lock the electric connector and the butt joint connector; a CPA member mounted to the latch arm and movable in a front-to-rear direction relative to the latch arm between a pre-lock position and a final-lock position, the CPA member including a base portion and a first arm extending forward from the base portion, the first arm being located on a side of the latch arm away from the deformation space, at least one locking portion protruding from the first arm toward the latch portion, at least one restricting portion extending from the first arm being located rearward of the locking portion and at least partially forward of the unlocking portion, the restricting portion including a first portion extending in the up-to-down direction and a second portion extending from the first portion toward the unlocking portion, the second portion being located on a side of the unlocking portion adjacent to the deformation space, the locking portion blocking a front side of the locking portion to hold the CPA member in the pre-lock position, the unlocking portion blocking a rear side of the first portion to block the CPA member from being pulled rearward of the latch arm; when the electric connector is not in plug-in fit with the butting connector, and the CPA element is positioned at the pre-locking position and is deflected by external force, the unlocking part is pressed by the pressing force of the CPA element to move towards the deformation space and press the second part so as to prevent the clamping part and the locking part from being separated and tripped along the vertical direction; when the electric connector is in plug-in fit with the butting connector, the butting shell abuts against the first arm to enable the locking part and the clamping part to be separated and tripped along the vertical direction, the locking part is matched with the locking part, the CPA element moves from the pre-locking position to the final locking position, the CPA element is buckled with the butting shell to be kept at the final locking position, and when the CPA element is located at the final locking position, the CPA element is blocked by the insulating shell along the vertical direction.

Further, the docking shell is provided with two buckling grooves located on the left side and the right side of the locking portion, each buckling groove penetrates through the docking shell upwards, a protection portion is arranged above each buckling groove of the docking shell, two second arms extending forwards from the base portion are located on the left side and the right side of the first arm, the two second arms are located on the left side and the right side of the locking arm, a hanging table is outwards protruded at the front end of each second arm along the left direction and the right direction, when the CPA element is located at the final locking position, the front ends of the two second arms correspondingly enter the two buckling grooves, the two hanging tables are respectively clamped in the two buckling grooves to enable the CPA element to be kept at the final locking position, and the two protection portions respectively stop the front ends of the two second arms to prevent the two second arms from upwards displacing.

Compared with the prior art, the utility model has the following beneficial effects:

the CPA element is arranged on the latch arm, so that the CPA element and the latch arm are displaced together, an operator can operate the latch arm through the CPA element, the first arm is positioned on one side of the latch arm away from the deformation space, the CPA element occupies the deformation space, the size is reduced, the miniaturization of the electric connector is facilitated, the latch part stops the front side of the blocking part of the first arm to keep the CPA element at the pre-locking position, the limiting part extends from the first arm to the limiting part, the limiting part comprises a first part extending along the upper and lower direction, the unlocking part can stop the rear side of the first part to prevent the CPA element from being separated from the latch arm when the CPA element is at the pre-locking position, the second part is positioned on one side of the unlocking part close to the deformation space, the CPA element is prevented from being moved towards the pre-locking part when the CPA element is contacted with the pre-locking part, the CPA element is prevented from being moved towards the pre-locking part in the upper direction, the CPA element is prevented from moving towards the pre-locking part when the CPA element is stopped from being pushed by the pre-locking part, the CPA element is prevented from moving towards the pre-locking part, and the CPA element is prevented from moving part, the electric connector is convenient for subsequent operators to directly plug in the electric connector and the butt connector, the risk of damaging the lock catch arm and the first arm by forced plug in is reduced, and the service lives of the electric connector and the CPA element are prolonged.

[ description of the drawings ]

FIG. 1 is a perspective view of an electrical connector assembly of the present utility model;

FIG. 2 is an exploded perspective view of the electrical connector assembly of the present utility model;

FIG. 3 is an exploded perspective view of the electrical connector of the present utility model;

FIG. 4 is an exploded perspective view of FIG. 3 from another perspective;

FIG. 5 is a perspective view of the CPA component of the electrical connector of the present utility model in a pre-lock position;

FIG. 6 is a perspective partial cross-sectional view of FIG. 5 taken in a horizontal direction;

FIG. 7 is a perspective partial cross-sectional view of FIG. 5 taken in a vertical direction;

FIG. 8 is a partial cross-sectional side view of the CPA member of the electrical connector of the present utility model in a pre-lock position;

FIG. 9 is a partial cross-sectional side view of the mis-touch CPA element of FIG. 8 flexing a latch arm;

FIG. 10 is a partial cross-sectional side view of the stop boss stop block of FIG. 9;

FIG. 11 is a partial cross-sectional side view of the CPA component of the present utility model in a pre-lock position with an electrical connector just mated with a mating connector;

FIG. 12 is a partial cross-sectional side view of the electrical connector of FIG. 10 further mated with a mating connector;

FIG. 13 is a partial cross-sectional side view of the electrical connector in the final lock position with the mating connector in the completed CPA component of the present utility model;

FIG. 14 is a partial cutaway top view of the electrical connector in the final lock position with the mating connector completed with the CPA component of the present utility model;

fig. 15 is a schematic perspective view of the CPA member of the electrical connector of the present utility model.

Reference numerals of the specific embodiments illustrate:

[ detailed description ] of the utility model

For a better understanding of the utility model with objects, structures, features, and effects, the utility model will be described further with reference to the drawings and to the detailed description.

As shown in fig. 1 to 15, for the electrical connector 100 and the electrical connector assembly provided by the present utility model, the electrical connector assembly includes an electrical connector 100 and a mating connector 200 that are mated in the front-rear direction, the electrical connector 100 includes an insulating housing 1, the insulating housing 1 is provided with a latch arm 11, the latch arm 11 has a latch portion 112 that is locked with a locking portion 32 of the mating connector 200, a CPA member 2 is mounted on the latch arm 11 and is movable in a pre-latch position and a final latch position relative to the latch arm 11 in the front-rear direction, the CPA member 2 is provided with a first arm 22 and a limiting portion 23 extending from the first arm 22, the first arm 22 has a blocking portion 223 that is blocked by the latch portion 112 to keep the CPA member 2 in the pre-latch position, and if the latch arm 11 is deflected by a mistake of the CPA member 2 when the electrical connector 100 and the mating connector 200 are not mated, the latch arm 11 is prevented from being moved toward the pre-latch position, the first arm 23 is prevented from being stopped from moving toward the pre-latch position, and the limiting portion 23 is prevented from moving toward the pre-latch position by the first arm 22 and the limiting portion 23. The front-back direction is defined as the X-axis direction in the figure, the X-axis forward direction is the front, the left-right direction is the Y-axis direction in the figure, the Y-axis forward direction is the right, the up-down direction is the Z-axis direction in the figure, and the Z-axis forward direction is the up-direction.

As shown in fig. 3, 4 and 8, the latch arm 11 extends upward and backward from the top front end of the insulating housing 1, the free end of the latch arm 11 is suspended, so that the insulating housing 1 forms a deformation space 12 under the latch arm 11, in which the latch arm 11 can flex downward, the under side of the latch arm 11 is a side near the deformation space 12, the upper side of the latch arm 11 is a side far from the deformation space 12, the latch arm 11 includes two arm portions 111 disposed at intervals in the left-right direction, the latch portions 112 are protruded upward from each of the arm portions 111 with a gap 113 therebetween, the rear ends of the two latch portions 112 are connected in the left-right direction to form an unlocking portion 114, the two latch portions 112 are further forward than the unlocking portion 114 in the front-rear direction, the two locking portions 112 and the unlocking portion 114 have a height difference in the vertical direction, the top surface of the unlocking portion 114 is higher than the top surfaces of the two locking portions 112, and since each locking portion 112 is formed to protrude upward from each arm portion 111, a receiving groove 115 is formed on the rear side of the locking portion 112 on the side of each arm portion 111 away from the deformation space 12 (i.e., the upper side of the arm portion 111), the top surface of each locking portion 112 is higher than the bottom wall surface of the receiving groove 115 on the rear side thereof in the vertical direction, the rear end surface of the locking portion 112 corresponds to the front wall surface of the receiving groove 115, the top point of each locking portion 112 is located on the bottom wall surface of the receiving groove 115 on the rear side thereof in the vertical direction, each receiving groove 115 extends backward to the lower side of the unlocking portion 114, a part of each of the accommodating grooves 115 is overlapped with the unlocking portion 114 in the up-down direction, another part of each of the accommodating grooves 115 is located in front of the unlocking portion 114, the bottom wall surface of each of the accommodating grooves 115 continuously and flatly extends in the front-back direction, no step is provided on the bottom wall surface of each of the accommodating grooves 115, the bottom wall surface of each of the accommodating grooves 115 extends obliquely downward slightly when seen in the left-right direction, one side blocking portion 116 extends obliquely forward from the left and right sides of the unlocking portion 114, and two side blocking portions 116 are located at the left and right sides of each of the two accommodating grooves 115. Two side walls 14 are provided protruding upwards from the top of the insulating housing 1, the two side walls 14 are respectively located at the left side and the right side of the two arm portions 111, the top ends of the two side walls 14 are connected along the left-right direction to form a bridging portion 15, the bridging portion 15 is suspended above the two arm portions 111, two stop bosses 13 are provided protruding upwards from the rear end of the top of the insulating housing, the two stop bosses 13 are respectively located at the left side and the right side of the unlocking portion 114, and the left boundary and the right boundary of the deformation space 12 are further defined between the two stop bosses 13 along the left-right direction.

As shown in fig. 3 to 7, the CPA member 2 is assembled and suspended on the upper side of the latch arm 11 in the front-rear direction, the CPA member 2 can move together with the latch arm 11, so that an operator can operate the latch arm 11 through the CPA member 2, and the CPA member 2 is located between the latch arm 11 and the bridge 15 in the up-down direction, and the CPA member 2 is located between the two side walls 14 in the left-right direction. As shown in fig. 15, the CPA member 2 includes a base 21, a first arm 22 extending forward from the base 21, two second arms 24 extending forward from the base 21, the two second arms 24 being located on left and right sides of the first arm 22, respectively, each of the second arms 24 being connected to the first arm 22 via a connecting portion 25 in the left and right directions, two stopper portions 26 extending forward from the left and right sides of the base 21, the two stopper portions 26 being located on left and right sides of the two second arms 24, and each of the stopper portions 26 extending in the front and rear directions by a length smaller than that of each of the second arms 24 and the first arm 22. As shown in fig. 8, the first arm 22 is mounted on a side of the latch arm 11 away from the deformation space 12 (i.e., the first arm 22 is mounted on an upper side of the latch arm 11) and is located on a lower side of the bridge portion 15, the first arm 22 extends from the base 21 obliquely downward and then bends upward, and the portions of the first arm 22 that extend obliquely and bends are located on a front side of the connecting portion 25, so that the portion of the first arm 22 located on the front side of the connecting portion 25 has elasticity and is deformable in an up-down direction. As shown in fig. 6 to 8 and 15, when the CPA member 2 is located at the pre-locking position, the portion of the first arm 22 extending obliquely downward is located between the two side blocking portions 116, an inclined abutting portion 221 is formed at the bottom of the front end of the first arm 22, the inclined surface of the abutting portion 221 is disposed obliquely forward and upward, the abutting portion 221 is accommodated in the gap 113 between the two locking portions 112, the first arm 22 is formed with two notches 222 on both sides of the abutting portion 221, the two notches 222 are respectively engaged with the two locking portions 112, the rear wall surfaces of the two notches 222 form two locking portions 223, and when the two locking portions 223 are projected in the left-right direction, the two locking portions 223 are formed to protrude from the first arm 22 toward the two locking portions 112, the two notches 222 are respectively aligned with the two locking portions 112 in the front-rear direction, so that the two locking portions are not locked to the two locking portions 223 are separated from each other in the front-right direction, and the two locking portions 223 are automatically prevented from moving in the front-left-right direction, and the two locking portions 223 are automatically prevented from being moved in the front-right direction, and the two locking portions 112 are automatically prevented from being separated from being moved in the front-left-right direction by the front-left-right direction. As shown in fig. 6, 8 and 15, in order to prevent the CPA member 2 from being separated from the pre-locking position when the electrical connector 100 and the mating connector 200 are not mated, two restricting portions 23 are respectively extended from both left and right sides of the first arm 22, the two restricting portions 23 are used to hold the first arm 22 together, each restricting portion 23 is located at a rear side of the locking portion 223 and at a front side of the connecting portion 25 in the front-rear direction, and each restricting portion 23 is located at least partially in front of the unlocking portion 114, each restricting portion 23 includes a first portion 231 extending vertically in the up-down direction, a lower end of the first portion 231 is lower than a bottom surface of the unlocking portion 114, a second portion 232 is horizontally extended from a lower end of the first portion 231 toward a side where the unlocking portion 114 is located (i.e., toward the rear side), the ends of the two second portions 232 are free ends, each of the first portions 231 and each of the second portions 232 are offset from the locking portion 223 in the front-rear direction, so that stress concentration of the first arm 22 is avoided, the two limiting portions 23 are limited between the two side blocking portions 116 in the left-right direction, the two side blocking portions 116 are blocked at the outer side surfaces of the two first portions 231 to limit displacement of the first arm 22 in the left-right direction, thereby limiting separation of the two locking portions 112 and the two locking portions 223 in the left-right direction, the unlocking portion 114 is blocked at the rear side of the two first portions 231 to prevent the CPA member 2 from being separated from the locking arm 11 backward, the two second portions 232 are respectively corresponding to the two receiving grooves 115, each second portion 232 is located at a side of the unlocking portion 114 near the deformation space 12 (i.e., the second portion 232 is located at a lower side of the unlocking portion 114) and is received in the receiving groove 115 overlapped with the unlocking portion 114, the unlocking portion 114 blocks the second portion 232 from being separated upward from the corresponding receiving groove 115, and each second portion 232 is received in the receiving groove 115 at an upper side of the latch arm 11 without additionally occupying the deformation space 12 at a lower side of the latch arm 11. As shown in fig. 5 and 8, the two stopper portions 26 are further rearward than the two stopper bosses 13 in the front-rear direction, and the stopper bosses 13 on the same side are offset from the stopper portions 26 in the up-down direction to allow the CPA member 2 to be actuated downward in the pre-lock position. As shown in fig. 9, when the CPA member 2 is in the pre-locking position and the electrical connector 100 and the mating connector 200 are not plugged, if the CPA member 2 is touched by an operator and the CPA member 2 is actuated downward by an external force, for example, when the operator holds the electrical connector 100, the latch arm 11 located at the lower side of the CPA member 2 is deflected toward the deformation space 12 by being pressed downward, both the latch portion 112 and the latch portion 114 are displaced downward, the latch portion 114 presses the two second portions 232 downward, and the two second portions 232 are also respectively abutted against the bottom wall surfaces of the two receiving grooves 115, so that during the downward deflection of the latch arm 11, the two second portions 232 are pressed by the pressing force to restrict the movement of the first arm 22, excessive displacement of the locking portion 223 in a direction away from the latch portion 112 (i.e., upward) is suppressed, in other words, the two second portions 232 can drive the locking portion 223 downward, preventing the two latch portions 112 from being separated from the two locking portions 223 up and down, retaining the two latch portions 112 to still block the front sides of the two locking portions 223, thereby preventing the CPA member 2 from moving prematurely from the pre-lock position to the final-lock position, and the two stopper portions 26 move downward to partially overlap with the two stopper bosses 13 in the front-rear direction as shown in fig. 10, respectively, so that the two stopper bosses 13 stop in front of the two stopper portions 26 respectively to further prevent the CPA member 2 from moving forward, thus effectively preventing the CPA member 2 from moving forward to the final-lock position under incorrect operation.

As shown in fig. 6, 7 and 15, the two second arms 24 respectively correspond to the two arm portions 111, a sliding slot 241 is concavely formed on a side of each second arm 24 facing the first arm 22, and the two sliding slots 241 are respectively engaged with the outer sides of the two arm portions 111, so that the CPA member 2 can slide between the pre-locking position and the final-locking position. The front end of each second arm 24 is provided with a hanging platform 242 protruding outwards from the left and right, when the CPA member 2 is in the pre-locking position, the front ends of the two second arms 24 protrude forward to the two side walls 14, and the two side walls 14 block the rear sides of the two hanging platforms 242, so as to strengthen and prevent the CPA member 2 from being separated from the latch arms 11 backward.

As shown in fig. 1, 2 and 14, the mating connector 200 includes a mating housing 3, the mating housing 3 includes a plugging cavity 31, two locking portions 32 and two holding grooves 33 disposed on top walls of the plugging cavity 31, the two holding grooves 33 are respectively located on left and right sides of the two locking portions 32, the locking portions 32 are holes penetrating through top walls of the mating housing 3 in up and down directions, the holding grooves 33 are grooves extending in front and back directions and opening toward one side of the insulating housing 1, edges of each holding groove 33 are configured in a shape of a snap point, each holding groove 33 penetrates through the top wall of the mating housing 3 upward, a protecting portion 34 is disposed above each holding groove 33, and each protecting portion 34 extends upward from left and right sides of the holding groove 33 to be bent to partially cover the upper sides of the holding groove 33.

As shown in fig. 11 to 14, during the mating process of the electrical connector 100 and the mating connector 200, the front end of the insulating housing 1 is plugged into the plugging cavity 31, as the mating housing 3 and the insulating housing 1 approach each other, the lower surface of the top wall of the mating housing 3 is in sliding contact with the front ends of the latch arms 11, and the lower surface of the top wall of the mating housing 3 abuts against the upper surfaces of the two latch portions 112, so that the latch arms 11 flex, the two latch portions 112 are biased downward by downward pressure, the upper surface of the top wall of the mating housing 3 abuts against the inclined abutting portion 221, so that the abutting portion 221 is lifted upward, and the two latch portions 223 and the two latch portions 112 are separated by the mating housing 3 in the up-down direction, continuing to insert the insulating housing 1 into the mating cavity until the two locking portions 112 move into the two locking portions 32, the mating housing 3 no longer has a downward pressing force on the locking arms 11, the locking arms 11 are restored by elastic restoring, the electrical connector 100 and the mating connector 200 are locked together by the two locking portions 112 respectively holding with the two locking portions 32, the electrical connector 100 and the mating connector 200 are completely engaged and the CPA member 2 is allowed to move forward from the pre-locking position, at this time, the CPA member 2 is moved forward by a hand again, the bottom side of the front end of the first arm 22 slides forward along the upper surface of the top wall of the mating housing 3, the two locking portions 223 move above the two locking portions 112, the two second portions 232 slide along the bottom wall surfaces of the two receiving grooves 115 respectively, each of the second portions 232 slides forward along the bottom wall surface of the corresponding receiving groove 115 to the front side of the unlocking portion 114, the front ends of the two second arms 24 are respectively inserted into the two retaining grooves 33, the two retaining bosses 13 are respectively retained in the two retaining grooves 33, the CPA member 2 reaches and is held in the final locking position, the two protecting portions 34 can respectively retain the upper portions of the front ends of the two second arms 24 as shown in fig. 1, the two retaining bosses 242 are prevented from being separated upward from the two retaining grooves 33, the CPA member 2 is prevented from being separated from the final locking position, the two retaining portions 26 are moved forward to the upper portions of the two retaining bosses 13, the two retaining bosses 13 are respectively retained by the two retaining portions 26 to displace downward, the CPA member 2 is prevented from moving downward, the latch arm 11 located on the lower side of the CPA member 2 is prevented from being retained by the two retaining portions of the latch arm, and the two retaining portions of the latch arm are maintained in a stable connection with the two retaining portions 112, and the stable connection function is ensured. When the locking state of the electrical connector 100 and the mating connector 200 needs to be released, the CPA member 2 is moved backward from the final locking position, the bottom side of the first arm 22 slides along the upper surface of the top wall of the mating housing 3, the two second arms 24 flex inward in the left-right direction, the two hanging tables 242 respectively withdraw the two locking grooves 33, the two second portions 232 respectively slide backward along the bottom wall surfaces of the two receiving grooves 115, the two stopping portions 26 respectively move backward to the rear of the two stopping bosses 13, the CPA member 2 is allowed to be pressed downward, the CPA member 2 is actuated downward to flex the latching arms 11, the two latching portions 112 respectively displace downward, at this time, the electrical connector 100 and the mating connector 200 are released from the locking positions, the two latching portions 112 respectively withdraw the two locking portions 32, the two electrical connector 100 and the mating connector 200 slide backward from the two latching portions 1 to the respective lower side surfaces of the housing 11, and the two latching portions 2 are respectively returned to the opposite positions of the two latching portions 114, and the two latching portions 2 are respectively returned to the latching portions 3. The deflection of the latch arm 11 mentioned in this embodiment is not limited to bending, but includes that the latch arm 11 is elastically deformed, and the deformation space 12 is located at the lower side of the latch arm 11 in this embodiment, but may be left and right sides or other sides of the latch arm 11 in other embodiments.

In summary, the electrical connector 100 and the electrical connector assembly of the present utility model have the following advantages:

1. the CPA member 2 is mounted to the latch arm 11 such that the CPA member 2 is displaced together with the latch arm 11, so that an operator can operate the latch arm 11 by the CPA member 2, and the first arm 22 is located at a side of the latch arm 11 away from the deformation space 12, the CPA member 2 is reduced to occupy the deformation space 12, thereby reducing the size of the electrical connector 100 to facilitate miniaturization, the latch portion 112 is stopped at a front side of the stopper portion 223 of the first arm 22 to hold the CPA member 2 in the pre-latch position, the restricting portion 23 is extended from the first arm 22, the restricting portion 23 includes the first portion 231 extending in an up-down direction, the unlocking portion 114 is capable of stopping a rear side of the first portion 231 to prevent the CPA member 2 from being released rearward from the latch arm 11 in the pre-latch position, and extends the second portion 232 from the first portion 231 toward the unlocking portion 114, the second portion 232 is located at a side of the unlocking portion 114 close to the deformation space 12, if an external force mistakenly touches the CPA element 2 at the pre-locking position, the CPA element 2 drives the latch arm 11 to flex, the unlocking portion 114 is displaced toward the deformation space 12 by the pressing force of the CPA element and presses the second portion 232, the second portion 232 is pressed by the pressing force of the unlocking portion 114 to restrict the movement of the first arm 22, the blocking portion 223 of the first arm 22 is restrained from excessively displacing in a direction away from the latch portion 112, the blocking portion 223 is prevented from disengaging from the latch portion 112 in an up-down direction, so that when the CPA element 2 is actuated by incorrect operation, the latch portion 112 still keeps the front side of the locking portion 223 and prevents the CPA member 2 from moving forward from the pre-locking position to the final-locking position, so that the CPA member 2 is stably installed at the pre-locking position, which facilitates a subsequent operator to directly plug the electrical connector 100 into the mating connector 200, reduces the risk of damaging the latch arm 11 and the first arm 22 by forced plugging, and improves the service lives of the electrical connector 100 and the CPA member 2.

2. When the CPA member 2 is in the pre-locking position, the second portion 232 is accommodated in the accommodating groove 115 located at the lower side of the unlocking portion 114, and when the unlocking portion 114 is displaced downward and pressed against the second portion 232, the second portion 232 abuts against the bottom wall surface of the accommodating groove 115 and receives a supporting force from the bottom wall surface of the accommodating groove 115 upward, so that the unlocking portion 114 can be stably and continuously contacted with the second portion 232 during the downward displacement, and the first arm 22 is continuously held by the second portion 232; the second portions 232 are received in the receiving grooves 115 on the front side of the unlocking portion 114 when the CPA member 2 is in the final locking position, the bottom wall surfaces of the receiving grooves 115 extend continuously and smoothly in the front-rear direction, and when the CPA member 2 moves between the pre-locking position and the final locking position, the two second portions 232 can slide along the bottom wall surfaces of the receiving grooves 115 corresponding thereto, so that the two second portions 232 can be guided to slide back and forth by the bottom wall surfaces of the corresponding receiving grooves 115, respectively, and when the CPA member 2 moves from the final locking position to the pre-locking position, the two second portions 232 can be guided to slide under the unlocking portion 114.

3. The two limiting portions 23 extend from the left and right sides of the first arm 22, so that the limiting portions 23 and the locking portions 223 are arranged in a staggered manner in the front-rear direction, stress concentration of the first arm 22 is avoided, structural strength of the first arm 22 is enhanced, the two limiting portions 23 are limited between the two side blocking portions 116 in the left-right direction, displacement of the first arm 22 in the left-right direction is limited, the two locking portions 112 and the two locking portions 223 are prevented from being tripped in the left-right direction, and the limiting portions 23 are arranged on the front side of the connecting portion 25, so that the limiting portions 23 can limit the first arm 22 to be located at a portion with elasticity on the front side of the connecting portion 25, and accordingly the restraining force of the second portion 232 on the first arm 22 is further improved.

4. The sliding groove 241 is disposed on the inner side of each second arm 24 and engaged with the corresponding side edge of the arm 111, so that the CPA member 2 is convenient to move between the pre-locking position and the final-locking position, the hanging table 242 is protruded at the front end of each second arm 24 and is clamped with the corresponding latching groove 33 of the docking connector 200, so that the CPA member 2 is kept at the final-locking position, the hanging table 242 is clamped with the docking connector 200, and instead of providing the clamping structure corresponding to the hanging table 242 on the insulating housing 1, the structure of the insulating housing 1 is simplified, the abrasion of the insulating housing 1 and the hanging table 242 caused by multiple abutting with the insulating housing 1 in the process of sliding the hanging table 242 back and forth is avoided, and the force after the electrical connector 100 and the docking connector 200 are locked is increased, so that the locking state between the two is firmer.

The above detailed description is merely illustrative of the preferred embodiments of the utility model and is not intended to limit the scope of the utility model, so that all equivalent technical changes that can be made by the present specification and illustrations are included in the scope of the utility model.

Claims (11)

1. An electrical connector, comprising:

the insulation shell comprises a lock catch arm, the lock catch arm comprises at least one lock catch part and an unlocking part, the lock catch part is more forward than the unlocking part along the front-back direction, and a deformation space for the lock catch arm to flex is formed in one side of the lock catch arm;

the CPA element is arranged on the lock catch arm and can move between a pre-locking position and a final-locking position relative to the lock catch arm along the front-back direction, the CPA element comprises a base and a first arm extending forwards from the base, the first arm is positioned on one side of the lock catch arm far away from the deformation space, at least one clamping part is arranged on the first arm in a protruding mode towards the lock catch part, at least one limiting part extends from the first arm and is positioned behind the clamping part and at least partially in front of the unlocking part, the limiting part comprises a first part extending along the up-down direction and a second part extending from the first part towards the unlocking part, the second part is positioned on one side of the unlocking part close to the deformation space, the front side of the clamping part is blocked by the lock catch part so as to keep the CPA element at the pre-locking position, the rear side of the unlocking part is blocked by the unlocking part so as to prevent the CPA element from being separated from the lock catch part from being separated from the pre-locking part in the back direction, and the CPA element is prevented from being deformed towards the release part along the release space when the CPA element is separated from the release part along the pre-locking position.

2. The electrical connector of claim 1, wherein: the lock catch arm is provided with at least one accommodating groove at one side far away from the deformation space, the second part is accommodated in the accommodating groove, the accommodating groove extends backwards to the unlocking part to enable the accommodating groove to be at least partially overlapped with the unlocking part in the vertical direction, the unlocking part is used for blocking the second part from being separated from the accommodating groove in the vertical direction, and when the CPA element is located at the pre-locking position and the first arm is deflected, the second part is abutted against the bottom wall surface of the accommodating groove.

3. The electrical connector of claim 2, wherein: the top surface of the locking part is higher than the bottom wall surface of the accommodating groove along the up-down direction, the bottom wall surface of the accommodating groove continuously and flatly extends along the front-back direction, the first part vertically extends downwards, the lower end of the first part is lower than the bottom surface of the unlocking part, the second part horizontally extends from the lower end of the first part to the rear side, and when the CPA element moves back and forth between the pre-locking position and the final-locking position, the second part slides along the bottom wall surface of the accommodating groove.

4. The electrical connector of claim 1, wherein: the top surface of the unlocking part is higher than the top surface of the locking part, the first arm is positioned on the upper side of the locking arm, the two limiting parts extend from the left side and the right side of the first arm respectively, the two first parts are positioned on the front side of the unlocking part, the unlocking part simultaneously stops the two first parts from being displaced backwards, and the tail ends of the two second parts are free ends.

5. The electrical connector of claim 4, wherein: and when the CPA element is positioned at the pre-locking position, the first arm is at least partially positioned between the two side blocking parts along the left and right directions, and the two side blocking parts respectively block the outer side surfaces of the two first parts.

6. The electrical connector of claim 1, wherein: the latch arm comprises two arm parts which are arranged at intervals along the left-right direction, the latch parts are arranged in an upward protruding mode from each arm part, a gap is reserved between the two latch parts along the left-right direction, the rear ends of the two arm parts are connected along the left-right direction to form the unlocking part, the first arm extends downwards in an inclined mode from the base part and then bends upwards to enable the front end bottom of the first arm to form an inclined propping part, two notches are concavely formed in the left side and the right side of the propping part, the two notches are in one-to-one correspondence with the two latch parts along the front-back direction, the rear wall surfaces of the two notches are formed into two locking parts, the propping parts are more front than the locking parts, when the CPA element is located at the pre-locking position, the two latch parts at least partially enter the two notches and block the front sides of the two locking parts, the propping parts are accommodated in the gap, and the propping parts are connected with the two latch parts in a butting mode and are used for being separated from the two latch parts along the upper direction.

7. The electrical connector of claim 1, wherein: two stopping bosses are arranged on the left side and the right side of the unlocking part in a protruding mode, a stopping part extends forwards from the left side and the right side of the base part respectively, when the CPA element is located at the pre-locking position, the stopping bosses located on the same side are staggered with the stopping part up and down to allow the CPA element to be actuated in the up-down direction, and when the CPA element is actuated downwards to enable the stopping part to move downwards to be partially overlapped with the stopping bosses in the front-back direction, the stopping bosses stop the front side of the stopping part to prevent the CPA element from moving forwards from the pre-locking position, when the CPA element is located at the final locking position, the two stopping bosses are at least partially overlapped with the two stopping bosses in the up-down direction respectively, and the two stopping bosses are stopped on the lower sides of the two stopping parts respectively to prevent the CPA element from moving downwards.

8. The electrical connector of claim 1, wherein: two second arms extend forward from the base, the two second arms are respectively located at the left side and the right side of the first arm, a sliding groove is concavely formed in one side, close to the first arm, of each second arm, the two sliding grooves are respectively engaged with the left side edge and the right side edge of the locking arm so that the CPA element can slide between the pre-locking position and the final-locking position, each second arm is connected with the first arm through a connecting portion along the left-right direction, and the limiting portion is more forward than the connecting portion.

9. The electrical connector of claim 8, wherein: and a hanging table is outwards protruded from the front end of each second arm along the left-right direction, the CPA element moves from the pre-locking position to the final locking position, and the two hanging tables are respectively clamped with the two buckling grooves of the butt connector so as to enable the CPA element to be kept at the final locking position.

10. An electrical connector assembly, comprising:

an electric connector is in plug-in fit with a butt-joint connector, the electric connector comprises an insulating shell, the insulating shell comprises a lock catch arm, the lock catch arm comprises at least one lock catch part and an unlocking part, the lock catch part is more forward than the unlocking part along the front-back direction, a deformation space for the lock catch arm to flex is formed on one side of the lock catch arm of the insulating shell, the butt-joint connector comprises a butt-joint shell, and the butt-joint shell comprises at least one locking part and the lock catch part which are matched to lock the electric connector and the butt-joint connector;

a CPA member mounted to the latch arm and movable in a front-to-rear direction relative to the latch arm between a pre-lock position and a final-lock position, the CPA member including a base portion and a first arm extending forward from the base portion, the first arm being located on a side of the latch arm away from the deformation space, at least one locking portion protruding from the first arm toward the latch portion, at least one restricting portion extending from the first arm being located rearward of the locking portion and at least partially forward of the unlocking portion, the restricting portion including a first portion extending in the up-to-down direction and a second portion extending from the first portion toward the unlocking portion, the second portion being located on a side of the unlocking portion adjacent to the deformation space, the locking portion blocking a front side of the locking portion to hold the CPA member in the pre-lock position, the unlocking portion blocking a rear side of the first portion to block the CPA member from being pulled rearward of the latch arm;

When the electric connector is not in plug-in fit with the butting connector, and the CPA element is positioned at the pre-locking position and is deflected by external force, the unlocking part is pressed by the pressing force of the CPA element to move towards the deformation space and press the second part so as to prevent the clamping part and the locking part from being separated and tripped along the vertical direction;

when the electric connector is in plug-in fit with the butting connector, the butting shell abuts against the first arm to enable the locking part and the clamping part to be separated and tripped along the vertical direction, the locking part is matched with the locking part, the CPA element moves from the pre-locking position to the final locking position, the CPA element is buckled with the butting shell to be kept at the final locking position, and when the CPA element is located at the final locking position, the CPA element is blocked by the insulating shell along the vertical direction.

11. The electrical connector assembly of claim 10, wherein: the butt joint shell is provided with two buckling grooves which are positioned on the left side and the right side of the locking part, each buckling groove penetrates through the butt joint shell upwards, a protection part is arranged above each buckling groove of the butt joint shell, two second arms which extend forwards from the base part are positioned on the left side and the right side of the first arm, the two second arms are positioned on the left side and the right side of the locking arm, a hanging table is outwards protruded at the front end of each second arm along the left direction and the right direction, when the CPA element is positioned at the final locking position, the front ends of the two second arms correspondingly enter the two buckling grooves, the two hanging tables are respectively clamped in the two buckling grooves so as to keep the CPA element at the final locking position, and the two protection parts respectively stop the front ends of the two second arms to prevent the two second arms from upwards displacing.