A connector

Abstract

The utility model provides a kind of connector, belong to connecting device field.The connector includes shell, cover and locking piece, locking piece includes base body and the locking arm of extension of being connected with base body and along plug direction, pawl for being arranged on locking arm of indication of buckling is set with the step structure stop cooperation to prevent locking piece from moving to stop position with being arranged on shell, pawl is also set with the buckling top pressure convex part for being pushed by the top pushing action of cover after being buckled in place to lift locking arm of indication of buckling to make pawl and step structure disengage stop, buckling top pressure convex part and the at least one of cover is provided with the guide surface for with another sliding top pressure cooperation.The connector is indicated whether buckling in place is realized to cover by locking arm of indication of buckling, to reduce the probability that cover cannot be buckled in place due to operator's carelessness, reduce security risk.

Description

Technical Field

[0001] This utility model belongs to the field of connection devices, and in particular relates to a connector. Background Technology

[0002] Some plug and socket connectors require a locking mechanism for additional locking after mating, in order to ensure reliable mating and prevent them from coming apart during use.

[0003] Chinese invention patent application CN109309317A discloses a secondary locking plug connector and connector assembly. The plug connector has a swingable locking plate with primary and secondary locking hooks for engaging with primary and secondary locking latches on a mating socket connector. The locking plate and its primary and secondary locking hooks constitute a locking structure, which requires sequential unlocking operations to unlock the entire connector. The plug connector also has a sliding locking plate (i.e., locking block). After the plug connector and socket connector are mated, a limiting part on the locking plate is pushed below the locking plate to limit its movement, preventing accidental operation. The position where the limiting part is below the locking plate is a stop position, and the position where the limiting part is removed from below the locking plate is a clearance position.

[0004] The locking plate has a barb on its lower side, and a boss on the plug connector housing that engages with the barb to prevent it from sliding from the clearance position to the stop position. On the side of the barb near the insertion end, the locking plate has a push-type portion that engages with the socket after insertion, causing the front end of the locking plate to tilt upwards and disengage the barb from the boss. This ensures that the locking plate can only be pushed forward after the plug and socket connectors are fully inserted. This allows the locking plate to indicate the insertion status of the plug and socket connectors and also prevents it from being in the stop position, which could interfere with the normal insertion of the plug and socket connectors.

[0005] For some conductive terminals that achieve conductivity through contact, to ensure reliable contact between the terminals in the plug connector and the socket connector, the terminals of some plug connectors are fixed together with bolts. This type of plug connector has an L-shaped structure, with its insertion / removal direction perpendicular to the cable's extension direction. The housing of this type of plug connector has an openable cover at the end away from the mating end in the insertion / removal direction. After opening the cover, bolts can be installed to connect the terminals in the plug connector and the socket connector. The cover is then closed. The cover is used to insulate and seal the terminals in the plug connector, preventing operators from touching the terminals and preventing foreign objects or liquids from entering the connector. The cover must be properly engaged to function correctly; however, in actual use, operator negligence often results in the cover not being properly engaged, posing a safety risk. Utility Model Content

[0006] The purpose of this utility model is to provide a connector to solve the technical problem in the prior art where the connector cannot be properly engaged due to negligence in operation because the cover is easily damaged.

[0007] To achieve the above objectives, the technical solution for the connector provided by this utility model is as follows: A connector includes a housing and a cover. The housing has a locking piece for locking with an adapter connector. The housing also has a movable locking piece that can move in the insertion / removal direction. The locking piece has a stop position that can stop and limit the locking piece and a clearance position that can disengage from the stop. The locking piece includes a base and a snap-in indicator spring arm connected to the base and extending in the insertion / removal direction. The snap-in indicator spring arm has a pawl for engaging with a stepped structure provided on the housing to prevent the locking piece from moving to the stop position. The snap-in indicator spring arm also has a snap-in pressing protrusion for lifting the snap-in indicator spring arm under the pushing action of the cover after the cover is snapped into place, so that the pawl disengages from the stepped structure. At least one of the snap-in pressing protrusion and the cover has a guide surface for engaging with another sliding pressing protrusion.

[0008] As a further improvement, a mating protrusion is provided on the cover at the position for mating with the snap-fit ​​pressing protrusion, and a relief groove is provided on the base to avoid the mating protrusion. The relief groove is directly opposite the snap-fit ​​indicator spring arm in the insertion and removal direction.

[0009] As a further improvement, the cover is a flip cover that is hinged to the housing on one side so that the cover can be flipped open and flipped closed, and the side of the cover away from the hinge axis is engaged with the fastening pressing protrusion.

[0010] As a further improvement, the locking top pressing protrusion and the locking claw are arranged at intervals along the insertion and extraction direction, with the locking top pressing protrusion located on the side of the locking claw away from the insertion end.

[0011] As a further improvement, the substrate is provided with an interlocking plug portion extending in the direction of the mating end, and the interlocking plug portion is provided with a plug conductor for plugging into the signal terminal on the adapter connector after the locking piece reaches the stop position to form a complete interlocking signal circuit.

[0012] As a further improvement, the base is also connected to a mating indicator spring arm. The mating indicator spring arm is provided with a stop pawl for engaging with a stepped structure provided on the housing to prevent the locking piece from moving to the stop position. The mating indicator spring arm is also provided with a mating pressing part for lifting the mating indicator spring arm by the pushing action of the adapter connector after the connector and the adapter connector are mated in place, so that the stop pawl is disengaged from the stepped structure. The mating indicator spring arm and the locking indicator spring arm are located on both sides of the interlocking mating part.

[0013] As a further improvement, the mating pressing part is a mating pressing protrusion. The mating pressing protrusion and the stop pawl are arranged side by side. The arrangement direction of the mating pressing protrusion and the stop pawl is the same as the arrangement direction of the mating indicator spring arm, the fastening indicator spring arm, and the interlocking mating part.

[0014] As a further improvement, the stop pawl and the interlocking connector at least partially overlap in the insertion and extraction direction, and the insertion pressure protrusion is located on the side of the stop pawl away from the interlocking connector.

[0015] As a further improvement, both sides of the interlocking connector are provided with retaining spring arms for engaging with the adapter connector to keep the locking piece stationary. The engagement indicator spring arm and the corresponding retaining spring arm are arranged at intervals along the insertion and removal direction, and the latching indicator spring arm and the corresponding retaining spring arm are arranged at intervals along the insertion and removal direction.

[0016] As a further improvement, the base is also connected to an engagement indicator spring arm. The engagement indicator spring arm is provided with a stop pawl for engaging with a stepped structure provided on the housing to prevent the locking piece from moving to the stop position. The engagement indicator spring arm is also provided with an engagement pressing part for lifting the engagement indicator spring arm by the pushing action of the adapter connector after the connector and the adapter connector are fully engaged, so that the stop pawl is disengaged from the stepped structure. An extension part extending in the insertion and removal direction is provided on the base between the engagement indicator spring arm and the engagement indicator spring arm. A limiting step is provided on the extension part. A limiting protrusion is provided on the housing to engage with the limiting step to prevent the locking piece from moving away from the engagement end and falling off.

[0017] As a further improvement, the base is provided with an extension extending in the insertion direction, the extension is provided with a limiting step, the housing is provided with a mating spring arm, the mating spring arm is provided with a limiting protrusion that can engage with the limiting step to prevent the locking piece from moving away from the insertion end and falling off, and the limiting protrusion or the locking piece is provided with a sliding mating surface that allows the limiting step to pass unidirectionally in the direction of the insertion end to complete the assembly of the locking piece.

[0018] The beneficial effects are as follows: The connector provided by this utility model is an improvement on the existing technology. This connector features a locking indicator spring arm on the locking plate. The claws on the locking indicator spring arm can engage with the stepped structure on the housing to prevent the locking plate from moving towards the mating end. Only after the cover is fully engaged can the cover push against the locking protrusion, lifting the locking indicator spring arm and disengaging the claws from the stepped structure, allowing the locking plate to move towards the mating end. Thus, if the locking plate cannot be pushed forward when the operator moves it, the cover may not be fully engaged. The locking plate thus serves as an indicator of whether the cover is fully engaged, reducing the probability of the cover not being fully engaged due to operator negligence and lowering safety risks. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of the connector in this utility model; Figure 2 This is a schematic diagram of the locking piece in Embodiment 1 of the connector of this utility model; Figure 3 This is a cross-sectional view of Embodiment 1 of the connector in this utility model, which demonstrates the function of the insertion indicator spring arm. Figure 4 This is a cross-sectional view of Embodiment 1 of the connector in this utility model, which demonstrates the function of the snap-fit ​​indicator spring arm. Figure 5 This is a cross-sectional view of Embodiment 1 of the connector in this utility model, which demonstrates the function of the interlocking plug-in part. Figure 6 This is a cross-sectional view of Embodiment 1 of the connector in this utility model, which shows the sealing between the interlocking insertion part and the insertion cavity. Figure 7 This is a cross-sectional view of Embodiment 1 of the connector in this utility model, which shows the interlocking connection part.

[0020] Explanation of reference numerals in the attached figures: 1. Plug connector; 11. Plug end; 12. Housing; 13. Cover; 131. Mating protrusion; 14. Locking plate; 15. Cavity; 16. Locking plate; 161. Base; 1611. Clearance groove; 162. Snap-on indicator arm; 1621. Claw; 1622. Snap-on pressing protrusion; 163. Interlocking plug part; 1631. Groove; 1632. Plug conductor; 1633. Snap-on protrusion; 1634. Sealing groove; 1635. Sealing ring; 1636. Limiting position 164. Step; 1641. Engagement indicator spring arm; 1642. Stop pawl; 1643. Engagement pressing protrusion; 165. Guide arm; 166. Retaining spring arm; 167. Push plate; 168. Limiting part; 169. Anti-reverse part; 1691. Connecting arm; 1692. Connecting hole; 1693. Anti-reverse part; 1694. Through hole; 17. Mating spring arm; 171. Stopping protrusion; 172. Limiting protrusion; 2. Socket connector; 21. Adapting protrusion; 22. Socket cavity; 23. Pin. Detailed Implementation

[0021] The present invention will be further described in detail below with reference to the embodiments.

[0022] Specific embodiment 1 of the connector provided by this utility model: See appendix Figure 1 The connector is a plug connector 1, and the adapter connector that mates with it is a socket connector 2. The connector is generally L-shaped, and its mating direction with the adapter connector is perpendicular to the extension direction of the cable connected to it. The end of the connector that mates with the adapter connector is its mating end 11, with the mating direction as the front-back direction and the mating end 11 as the front end of the connector; the extension direction of the cable connected to the connector is the up-down direction, and the cable is connected to the lower side of the connector; the direction perpendicular to both the front-back and up-down directions is the left-right direction.

[0023] The connector includes a housing 12 and a cover 13. The rear end of the housing 12 has an opening for mounting bolts, and the cover 13 is located at the rear end of the housing 12 and closes the opening. The underside of the cover 13 is hinged to the housing 12 via a hinge axis, thereby allowing the cover 13 to be opened by flipping or to be fastened to the housing 12 by flipping.

[0024] The upper side of the housing 12 is provided with a locking structure for locking with the adapter connector. The locking structure includes a locking plate 14, the middle of which is connected to the main body of the housing 12 via a torsion bar, allowing the locking plate 14 to swing up and down. The locking structure also includes a primary locking hook and a secondary locking hook located on the lower front end of the locking plate 14. The specific structure of the locking structure is the same as that of the prior art and will not be described in detail.

[0025] The main body of housing 12 has a groove-shaped structure on its upper side. A locking piece 14 is located at the upper opening of the groove-shaped structure. The locking piece 14 and the groove-shaped structure on housing 12 together form a cavity 15. The connector also includes a locking piece 16, which is located in the cavity 15. The upper wall of the cavity 15 is the lower surface of the locking piece 14, and the lower wall and the left and right side walls of the cavity 15 are the surfaces of the main body of housing 12.

[0026] See appendix Figure 2 The locking piece 16 includes a base 161 and a latching indicator spring arm 162 integrally connected to the front side of the base 161 and extending forward, an interlocking insertion part 163, an insertion indicator spring arm 164, and a guide arm 165. The interlocking insertion part 163 is centrally located, the latching indicator spring arm 162 and the insertion indicator spring arm 164 are located on the left and right sides of the interlocking insertion part 163, respectively, and there are two guide arms 165. One guide arm 165 is located on the side of the latching indicator spring arm 162 away from the interlocking insertion part 163, and the other guide arm 165 is located on the side of the insertion indicator spring arm 164 away from the interlocking insertion part 163.

[0027] Both sides of the interlocking connector 163 are integrally connected with retaining spring arms 166, which are located between the interlocking connector 163 and the corresponding guide arm 165. The retaining spring arm 166 has an L-shaped structure, with one end engaging with the interlocking connector 163 and the other end facing forward for engaging with the adapter connector, so that the locking piece 16 can be kept in place. One retaining spring arm 166 is located in front of the engagement indicator spring arm 162, and the other retaining spring arm 166 is located in front of the engagement indicator spring arm 164.

[0028] The locking piece 16 has a compact overall layout, making the most of the space on the locking piece 16, thus enabling the locking piece 16 to achieve more functions in a small volume.

[0029] Both sides of the cavity 15 are provided with guide grooves extending forward and backward, and the guide arm 165 is guided and engaged with the corresponding guide groove in the forward and backward direction. The rear side of the base 161 is provided with an upwardly protruding push plate 167. After the preliminary preparation operations are completed, the operator can manually push the push plate 167 forward to move the locking piece 16 forward.

[0030] The inner side of the guide arm 165 is provided with a recess to avoid the retaining spring arm 166. Since the retaining spring arm 166 is engaged with the adapter connector through the inner protrusion, the retaining spring arm 166 will bend and deform outward during the insertion and removal of the connector and the adapter connector. The recess on the guide arm 165 can prevent interference when the retaining spring arm 166 is deformed.

[0031] The locking piece 16 has a stop position and a clearance position in the front-to-back direction, with the stop position in front and the clearance position in the back. Both the stop position and the clearance position are a segment, and the locking piece 16 can perform corresponding functions in the corresponding areas. The base 161 of the locking piece 16 is provided with a limiting part 168 for limiting the locking piece 14. When the locking piece 16 is in the stop position, the limiting part 168 can be locked below the rear end of the locking piece 14, so that the rear end of the locking piece 14 cannot swing downward, thereby locking the locking piece 14 and preventing accidental unlocking due to misoperation. When the locking piece 14 is in the clearance position, the limiting part 168 moves backward to avoid the locking piece 14, and the locking piece 14 is no longer limited. The rear end of the locking piece 14 can swing downward, thus enabling the unlocking operation between the connector and the adapter connector.

[0032] When the connector and adapter are not fully engaged, or when the cover 13 is not fully latched, the locking piece 16 can only remain in the clearance position and cannot be pushed forward to the stop position. In this way, the locking piece 16 can also indicate the engagement status of the connector and adapter and the latching status of the cover 13. The above two functions are achieved by the engagement indicator spring arm 164 and the latching indicator spring arm 162, respectively.

[0033] See appendix Figure 3 and in conjunction with the appendix Figure 2 The cavity 15 contains a mating spring arm 17 integrally connected to the main body of the housing 12. The mating spring arm 17 is plate-shaped, with its thickness direction aligned with the vertical direction. The front end of the mating spring arm 17 is an overhanging end that can swing up and down. The mating spring arm 17 is located below the locking plate 16. A stop protrusion 171 is provided on the mating spring arm 17 at positions corresponding to the insertion indicator spring arm 164 and the latching indicator spring arm 162. The rear side of the stop protrusion 171 is perpendicular to the front-back direction and forms a stepped surface. The front side of the stop protrusion 171 is a slope.

[0034] The lower side of the engagement indicator spring arm 164 is provided with a stop pawl 1641 and an engagement pressing part. The front side of the stop pawl 1641 can engage with the rear side of the corresponding stop protrusion 171 to prevent the locking piece 16 from moving forward to the stop position. The rear side of the stop pawl 1641 is a slope. In this way, when the locking piece 16 moves backward to the avoidance position, the slope of the stop pawl 1641 can engage with the slope of the stop protrusion 171 to lift the engagement indicator spring arm 164 upward, so that the stop pawl 1641 passes over the stop protrusion 171. The engagement pressing part is an engagement pressing protrusion 1642, and both the front and rear sides of the engagement pressing protrusion 1642 are sloped.

[0035] The adapter connector has an adapter protrusion 21 at a position corresponding to the mating pressing protrusion 1642. After the connector and the adapter connector are mated in place, the adapter protrusion 21 presses against the mating pressing protrusion 1642, thereby lifting the mating indicator spring arm 164 on the locking piece 16 which is in the avoidance position upward, so that the stop pawl 1641 disengages from the stepped structure on the corresponding stop protrusion 171, thus achieving a prerequisite for the locking piece 16 to move forward.

[0036] In this embodiment, the stop claw 1641 and the mating pressing protrusion 1642 are arranged side by side, with the mating pressing protrusion 1642 and the stop claw 1641 arranged along the left-right direction. The mating pressing protrusion 1642 is located on the side of the stop claw 1641 furthest from the interlocking connector 163. This arrangement aims to shorten the front-to-back length of the entire mating indicator spring arm 164, making the locking plate 16 structure more compact. Furthermore, this arrangement allows the mating indicator spring arm 164 to be as close as possible to the interlocking connector 163. Even if there is an overlap between the stop claw 1641 and the front end of the interlocking connector 163 in the front-to-back direction, the mating pressing protrusion 1642 should not engage with the adapter protrusion 21 on the adapter connector, thus reducing the overall left-right dimensions of the locking plate 16.

[0037] See appendix Figure 4 and in conjunction with the appendix Figure 2 The lower side of the engagement indicator spring arm 162 is provided with a pawl 1621 and an engagement pressing protrusion 1622. The engagement pressing protrusion 1622 is a raised structure and is located behind the pawl 1621. The front side of the pawl 1621 can engage with the rear side of the corresponding stop protrusion 171 to prevent the locking piece 16 from moving forward to the stop position. The rear side of the pawl 1621 is a slope, so that during the process of the locking piece 16 moving backward from the stop position to the avoidance position, the slope of the pawl 1621 can engage with the slope of the stop protrusion 171 to lift the engagement indicator spring arm 1622 upward, so that the pawl 1621 passes over the stop protrusion 171. Both the front and rear sides of the engagement pressing protrusion 1622 are sloped.

[0038] The upper edge of the cover 13 is provided with a mating protrusion 131 that can press against the snap-fit ​​pressing protrusion 1622. The front and rear sides of the mating protrusion 131 are also beveled. When the cover 13 is in the open state, the locking piece 16 is in the clearance position. After the cover 13 flips upward and snaps onto the housing 12 and is fully engaged, the mating protrusion 131 on the cover 13 presses against the snap-fit ​​pressing protrusion 1622, thereby lifting the snap-fit ​​indicator spring arm 162 on the locking piece 16 upward, causing the pawl 1621 to disengage from the stepped structure on the corresponding stop protrusion 171, thus achieving another prerequisite for the locking piece 16 to move forward.

[0039] Since the hinge axis of the cover 13 is at the bottom, the upper edge of the cover 13 has the largest displacement when rotated by the same angle. Using the upper edge of the cover 13 to push and engage the pressing protrusion 1622 can improve the accuracy of the indication and ensure that the cover 13 is fully engaged before triggering the engagement indicator spring arm 162.

[0040] During the process of the mating protrusion 131 pressing against the fastening protrusion 1622, the inclined surface on the front side of the mating protrusion 131 and the inclined surface on the rear side of the fastening protrusion 1622 slide and press against each other, so both of these inclined surfaces constitute guide surfaces.

[0041] To facilitate the elastic deformation of the insertion indicator arm 164 and the latching indicator arm 162, the thickness of the insertion indicator arm 164 and the latching indicator arm 162 in the vertical direction is smaller than that of the base 161 in the vertical direction, and the lower side of the insertion indicator arm 164 and the latching indicator arm 162 is higher than the lower side of the base 161. The lower side of the base 161 is provided with a relief groove 1611 for avoiding the mating protrusion 131 on the cover 13, and the bottom surface of the relief groove 1611 is flush with the lower side of the latching indicator arm 162.

[0042] Meanwhile, the clearance groove 1611 and the fastening indicator spring arm 162 are directly opposite each other in the front-back direction. In this way, after the mating protrusion 131 on the cover 13 passes through the clearance groove 1611, it can definitely press and engage with the fastening pressing protrusion 1622 on the fastening indicator spring arm 162. The clearance groove 1611 plays a role in positioning the cover 13 left and right during the fastening process of the cover 13.

[0043] Furthermore, the locking piece 16, through the interlocking insertion part 163, can realize the connection of the interlocking signal circuit, thereby indicating the mating state of the connector and the adapter connector in the form of an electrical signal. See Appendix Figure 5 and attached Figure 6 The interlocking connector 163 has a groove 1631 at its front end, and a U-shaped insertion conductor 1632 is disposed in the groove 1631. A corresponding insertion cavity 22 is provided at the corresponding position of the adapter connector for the front end of the interlocking connector 163 to be inserted into. Two pins 23 are disposed in the insertion cavity 22, and these two pins 23 are respectively connected to the two ends of the interlocking signal circuit. The interlocking signal circuit is disconnected at the two pins 23. The two pins 23 can be inserted and connected to the two ends of the insertion conductor 1632, and the insertion conductor 1632 short-circuits the two pins 23 to form a complete interlocking signal circuit.

[0044] See appendix Figure 7An anti-retraction member 169 is fitted onto the front end of the interlocking connector 163. The anti-retraction member 169 prevents the connector conductor 1632 from exiting from the front end of the interlocking connector 163. The anti-retraction member 169 includes an anti-retraction part 1693 at the front end and a connecting arm 1691 located behind the upper and lower ends of the anti-retraction part 1693 and extending rearward. The connecting arm 1691 can swing up and down and has a connecting hole 1692. The upper and lower sides of the interlocking connector are provided with locking protrusions 1633. The front side of the locking protrusion 1633 has a slope. The locking protrusion 1633 can be engaged into the connecting hole 1692 on the connecting arm 1691 to achieve the connection between the anti-retraction member 169 and the interlocking connector 163. After the anti-retraction component 169 is assembled, the anti-retraction part 1693 is located on the front side of the interlocking plug part 163, blocking the plug conductor 1632 and preventing the plug conductor 1632 from coming out forward. The anti-retraction part 1693 is provided with a through hole 1694 that runs from front to back, allowing the pin 23 on the adapter connector to pass through and plug into the plug conductor 1632 for conduction.

[0045] An annular sealing groove 1634 is provided on the interlocking plug part 163. The sealing groove 1634 is located behind the anti-retraction member 169. A sealing ring 1635 is installed in the sealing groove 1634. During the mutual insertion of the connector and the adapter connector, the interlocking plug part 163 will be inserted into the plug cavity 22 on the adapter connector. The sealing ring 1635 will also be inserted into the plug cavity 22. The sealing ring 1635 achieves a seal between the plug cavity 22 and the interlocking plug part 163.

[0046] See appendix Figure 5 Appendix Figure 6 and appendix Figure 7 A limiting step 1636 is provided on the lower side of the interlocking connector 163, located behind the sealing groove 1634, with the stepped surface of the limiting step 1636 facing rearward. A limiting protrusion 172 is provided on the upper side of the spring arm 17, with the front side of the limiting protrusion 172 perpendicular to the front-rear direction and the rear side of the limiting protrusion 172 being a slope. During use, the front side of the limiting protrusion 172 can engage with the stepped surface of the limiting step 1636 in the front-rear direction, thereby keeping the locking piece 16 in the clearance position and preventing the locking piece 16 from moving excessively rearward and falling off the housing 12.

[0047] The locking piece 16 is inserted into the cavity 15 from back to front. During the assembly process, the limiting step 1636 needs to pass over the limiting protrusion 172 so that the step surface of the limiting step 1636 can stop and engage with the front side of the limiting protrusion 172. As the limiting step 1636 passes over the limiting protrusion 172, the limiting step 1636 applies a downward pressing force to the inclined surface of the rear side of the limiting protrusion 172, thereby causing the engaging spring arm 17 to swing downward. After the limiting step 1636 passes over the limiting protrusion 172, the engaging spring arm 17 returns to its original position.

[0048] The inclined surface on the rear side of the limiting protrusion 172 forms a sliding mating surface that allows the limiting step 1636 and the limiting protrusion 172 to slide against each other. In other embodiments, an arc surface can also be provided on the rear side of the limiting protrusion 172 as a sliding mating surface. In other embodiments, a sliding mating surface can also be provided on the locking piece 16 to achieve mutual sliding between the limiting step 1636 and the limiting protrusion 172, and this sliding mating surface is located on the front side of the limiting step 1636.

[0049] Specific embodiment 2 of the connector provided by this utility model: This embodiment is based on embodiment 1. The difference between this embodiment and embodiment 1 is that the guide surface is not provided on the fastening top pressing protrusion in this embodiment, but is provided on the mating protrusion on the cover.

[0050] Specific embodiment 3 of the connector provided by this utility model: This embodiment is based on Embodiment 1, but differs in that the thickness of the front half of the snap-fit ​​indicator arm in the vertical direction is greater than that of the rear half. The upper side of the front half of the snap-fit ​​indicator arm is flush with the upper side of the rear half, and a stepped structure is formed between the lower side of the front half and the lower side of the rear half. This stepped structure constitutes the snap-fit ​​pressing protrusion. The stepped surface of the stepped structure faces rearward and is inclined, thus forming a guide surface.

[0051] Specific embodiment 4 of the connector provided by this utility model: This embodiment is based on embodiment 1. The difference between this embodiment and embodiment 1 is that the cover does not have a mating protrusion, and the height of the snap-fit ​​pressing protrusion is relatively high. In this way, after the cover is snapped in place, it can naturally press against the guide surface on the snap-fit ​​pressing protrusion.

[0052] Specific embodiment 5 of the connector provided by this utility model: This embodiment is based on embodiment 1. The difference between this embodiment and embodiment 1 is that in this embodiment, the lower side of the snap-fit ​​indicator arm is flush with the lower side of the base, and there is no need to set an avoidance groove.

[0053] Specific embodiment 6 of the connector provided by this utility model: This embodiment is based on embodiment 1. The difference between this embodiment and embodiment 1 is that the cap can be completely removed from the housing. When installing the cap, it is moved from back to front and snapped onto the housing.

[0054] Specific embodiment 7 of the connector provided by this utility model: This embodiment is based on embodiment 1. The difference between this embodiment and embodiment 1 is that the snap-fit ​​top pressing protrusion and the pawl are arranged side by side in this embodiment. The snap-fit ​​top pressing protrusion is located on the side of the pawl away from the interlocking insertion part. This makes the front and rear length of the snap-fit ​​indicator spring arm smaller, which facilitates the compact design of the entire locking plate.

[0055] Specific embodiment 8 of the connector provided by this utility model: This embodiment is based on embodiment 1. The difference between this embodiment and embodiment 1 is that no interlocking plug is provided in this embodiment, and the interlocking conductor is provided on the main body of the housing.

[0056] Specific embodiment 9 of the connector provided by this utility model: This embodiment is based on embodiment 1. The difference between this embodiment and embodiment 1 is that in this embodiment, the insertion indicator spring arm and the latching indicator spring arm are located on the same side of the interlocking insertion part, and the width dimension of the entire locking piece in the left and right direction is larger than that in embodiment 1.

[0057] Specific embodiment 10 of the connector provided by this utility model: This embodiment is based on embodiment 1. The difference between this embodiment and embodiment 1 is that in this embodiment, the mating top pressing protrusion is located on the side of the stop pawl near the interlocking mating part.

[0058] Specific embodiment 11 of the connector provided by this utility model: This embodiment is based on Embodiment 1, but differs in that the retaining arms are positioned on the front side of the base. One retaining arm is located between the engagement indicator arm and the corresponding guide arm, and the other retaining arm is located between the latching indicator arm and the corresponding guide arm. Compared to Embodiment 1, the locking piece in this embodiment has a larger left-right width.

[0059] However, there are no other structures in front of the engagement indicator arm, so there is ample space in front of the engagement indicator arm. In this embodiment, the engagement indicator arm is relatively long, and the engagement pressing protrusion is located in front of the stop pawl.

[0060] Specific embodiment 12 of the connector provided by this utility model: This embodiment is based on Embodiment 1, but differs in that the locking plate does not have a limiting step, and the engaging spring arm does not have a limiting protrusion. The locking plate can be pulled out of the cavity backward. Since the limiting protrusion is no longer provided, the assembly difficulty of the locking plate is reduced, the engaging spring arm does not need to be provided in the cavity, and the blocking protrusion can be provided on the main body of the housing.

[0061] Specific embodiment 13 of the connector provided by this utility model: This embodiment is based on embodiment 1. The difference between this embodiment and embodiment 1 is that the interlocking plug-in part is not provided in this embodiment. The snap-on indicator spring arm and the plug-in indicator spring arm are still arranged on the left and right sides at intervals. An extension part that extends forward is provided between the snap-on indicator spring arm and the plug-in indicator spring arm. The limiting step is provided on the extension part.

[0062] Finally, it should be noted that the above description is only a preferred embodiment of this utility model and is not intended to limit this utility model. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still make modifications to the technical solutions described in the foregoing embodiments without creative effort, or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A connector, comprising a housing (12) and a cover (13), wherein the housing (12) is provided with a locking piece (14) for locking with an adapter connector, and the housing (12) is also movably provided with a locking piece (16) movable in the insertion / removal direction, the locking piece (16) having a stop position for blocking and limiting the locking piece (14) and a clearance position for disengaging from the stop, characterized in that, The locking piece (16) includes a base (161) and a locking indicator spring arm (162) connected to the base (161) and extending in the insertion / removal direction. The locking indicator spring arm (162) is provided with a pawl (1621) for engaging with a stepped structure provided on the housing (12) to prevent the locking piece (16) from moving to the stop position. The locking indicator spring arm (162) is also provided with a locking pressing protrusion (1622) for lifting the locking indicator spring arm (1622) by the pushing action of the cover (13) after the cover (13) is locked in place, so that the pawl (1621) disengages from the stepped structure. At least one of the locking pressing protrusion (1622) and the cover (13) is provided with a guide surface for engaging with another sliding pressing protrusion.

2. The connector according to claim 1, characterized in that, The cover (13) is provided with a mating protrusion (131) at the position for mating with the snap-fit ​​pressing protrusion (1622), and the base (161) is provided with a relief groove (1611) for avoiding the mating protrusion (131). The relief groove (1611) and the snap-fit ​​indicator spring arm (162) are directly opposite each other in the insertion and removal direction.

3. The connector according to claim 1 or 2, characterized in that, The cover (13) is a flip cover that is hinged to the housing (12) on one side so that the cover (13) can be flipped open and flipped closed. The side of the cover (13) away from the hinge axis is pressed against the fastening top protrusion (1622).

4. The connector according to claim 1 or 2, characterized in that, The locking top pressing protrusion (1622) and the claw (1621) are arranged at intervals along the insertion and extraction direction, and the locking top pressing protrusion (1622) is located on the side of the claw (1621) away from the insertion end (11).

5. The connector according to claim 1 or 2, characterized in that, The base (161) is provided with an interlocking plug portion (163) extending toward the mating end (11), and the interlocking plug portion (163) is provided with a plug conductor (1632) for plugging into the signal terminal on the adapter connector after the locking piece (16) reaches the stop position to form a complete interlocking signal circuit.

6. The connector according to claim 5, characterized in that, The base (161) is also connected to a mating indicator spring arm (164). The mating indicator spring arm (164) is provided with a stop pawl (1641) for engaging with a stepped structure provided on the housing (12) to prevent the locking piece (16) from moving to the stop position. The mating indicator spring arm (164) is also provided with a mating pressing part for lifting the mating indicator spring arm (164) by the pushing action of the adapter connector after the connector and the adapter connector are mated in place, so that the stop pawl (1641) is disengaged from the stepped structure. The mating indicator spring arm (164) and the locking indicator spring arm (162) are located on both sides of the interlocking mating part (163).

7. The connector according to claim 6, characterized in that, The mating pressing part is a mating pressing protrusion (1642). The mating pressing protrusion (1642) and the stop pawl (1641) are arranged side by side. The arrangement direction of the mating pressing protrusion (1642) and the stop pawl (1641) is the same as the arrangement direction of the mating indicator spring arm (164), the locking indicator spring arm (162), and the interlocking mating part (163).

8. The connector according to claim 7, characterized in that, The stop pawl (1641) and the interlocking connector (163) overlap at least partially in the insertion and extraction direction, and the insertion pressing protrusion (1642) is located on the side of the stop pawl (1641) away from the interlocking connector (163).

9. The connector according to claim 6, characterized in that it is interlocked. Both sides of the plug-in portion (163) are provided with retaining spring arms (166) for locking with the adapter connector to keep the locking piece (16) stationary. The plug-in indicator spring arm (164) and the corresponding retaining spring arm (166) are arranged at intervals along the plugging and unplugging direction, and the fastening indicator spring arm (162) and the corresponding retaining spring arm (166) are arranged at intervals along the plugging and unplugging direction.

10. The connector according to claim 1 or 2, characterized in that, The base (161) is also connected to a mating indicator spring arm (164). The mating indicator spring arm (164) is provided with a stop pawl (1641) for engaging with a stepped structure provided on the housing (12) to prevent the locking piece (16) from moving to the stop position. The mating indicator spring arm (164) is also provided with a stop pawl (1641) for being lifted by the push action of the adapter connector after the connector and the adapter connector are mated in place, so that the stop pawl (1641) can be stopped. 1641) The insertion pressing part is separated from the step structure. An extension part extending in the insertion direction is provided on the base (161) between the fastening indicator spring arm (162) and the insertion indicator spring arm (164). A limiting step (1636) is provided on the extension part. A limiting protrusion (172) is provided on the housing (12) that can stop and cooperate with the limiting step (1636) to prevent the locking piece (16) from moving away from the insertion end (11) and falling off.

11. The connector according to claim 1 or 2, characterized in that, The base is provided with an extension extending in the insertion direction, and a limiting step (1636) is provided on the extension. The housing (12) is provided with a engagement spring arm (17). The engagement spring arm (17) is provided with a limiting protrusion (172) that can engage with the limiting step (1636) to prevent the locking piece (16) from moving away from the insertion end (11) and falling off. The limiting protrusion (172) or the locking piece (16) is provided with a sliding mating surface for the limiting step (1636) to pass unidirectionally in the direction of the insertion end (11) to complete the assembly of the locking piece (16).

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