connector

Abstract

The utility model discloses a connector, including shell, inner shell, terminal and stop piece, the shell includes main part, clamping arm and elastic lock catch, the inside of main part is equipped with a inner chamber, and the outside of main part is equipped with a accommodation space, and the elastic lock catch and clamping arm respectively show in the opposite two sides of accommodation space and can all be relative main body elastic flexure, the inner shell inserts in the inner chamber, and the inner shell is equipped with the clamping portion that is buckled with the clamping portion, stop piece is assembled in the accommodation space, and the upper and lower sides of stop piece respectively stop clamping arm and elastic lock catch. The clamping arm of elastic flexure shows in the accommodation space for stop piece to install, and the inner shell will lift up clamping arm in the process of installing in the shell, makes clamping arm flexure and partly convex in accommodation space, thereby prevents stop piece and installs in the accommodation space, can judge whether clamping arm is still in the state of being lifted up through detecting whether stop piece can install in the accommodation space, and further realizes the detection whether the assembly of inner shell and shell is in place.

Description

Technical Field

[0001] This utility model relates to the field of connector technology, and in particular to a connector that can detect whether the inner shell and outer shell are properly assembled. Background Technology

[0002] Connectors used in automobiles generally have stringent requirements. To meet current automotive performance requirements, some existing connectors consist of both an inner shell and an outer shell. During installation, the inner shell is inserted into the outer shell, and then the snap-fit ​​portion on the inner shell engages with the snap-fit ​​arm on the outer shell to secure the inner shell within the outer shell. After the connector is mated with the mating connector, to ensure the stability of the engagement between the elastic latch on the outer shell and the mating connector, a stop is installed on the outer shell. This stop limits and restricts the elastic latch, preventing it from becoming abnormally loose from the mating connector.

[0003] The existing connectors have relatively separate locking arms and stop components. This makes it impossible to detect whether the locking part and locking arm are properly engaged during connector assembly, i.e., it is impossible to detect whether the inner shell and outer shell are properly assembled. Improper assembly can lead to the inner shell and outer shell separating, posing a safety hazard.

[0004] Therefore, it is necessary to design an improved connector to overcome the above problems. Summary of the Invention

[0005] To address the problems encountered in the background technology, the present invention aims to provide a connector that exposes the snap-fit ​​arm within the receiving space for the installation stop. If the snap-fit ​​arm and snap-fit ​​part do not mate properly during the installation of the inner shell into the outer shell, the snap-fit ​​arm will warp and deform, thus hindering the installation of the stop. By determining whether the stop can be properly installed into the receiving space, the proper engagement of the snap-fit ​​arm and snap-fit ​​part can be detected, thereby solving the problem of detecting whether the inner shell and outer shell are properly assembled.

[0006] To achieve the above objectives, the present invention employs the following technical means:

[0007] A connector for mating with a pair of mating connectors, comprising:

[0008] The housing includes a main body, a snap-fit ​​arm connecting the main body, and an elastic latch spaced apart from the snap-fit ​​arm; the main body has an inner cavity inside and a receiving space outside the main body; the elastic latch is used to engage with the mating connector; the snap-fit ​​arm is located between the inner cavity and the receiving space; the snap-fit ​​arm has a locking part; the elastic latch and the snap-fit ​​arm are respectively exposed on opposite sides of the receiving space and can both be elastically flexed relative to the main body;

[0009] The inner shell is inserted into the inner cavity from front to back, and the inner shell is provided with a snap-fit ​​part that snaps into the locking part in the front-to-back direction;

[0010] Terminals, housed within the inner housing; and

[0011] A stop member is assembled from back to front in the receiving space and located on the side of the snap-fit ​​arm away from the inner shell. The stop member moves relative to the outer shell between a pre-lock position and a final lock position. When the stop member is in the pre-lock position, the resilient latch can elastically flex relative to the main body. When the connector is inserted into the mating connector until the resilient latch engages with the mating connector, the stop member can move from the pre-lock position to the final lock position. In the final lock position, the upper and lower sides of the stop member respectively block the snap-fit ​​arm and the resilient latch.

[0012] During the insertion of the inner shell into the inner cavity, the snap-fit ​​arm will be pushed up toward the side closer to the elastic latch, so that the snap-fit ​​arm elastically deforms and at least partially protrudes into the receiving space to block the insertion of the stop. When the inner shell and the outer shell are assembled in place, the locking part is snapped and fixed with the snap-fit ​​part by the elastic recovery of the snap-fit ​​arm, and the snap-fit ​​arm no longer blocks the insertion of the stop.

[0013] In one embodiment, the snap-fit ​​arm extends in a front-rear direction, the front end of the snap-fit ​​arm is a fixed end connected to the main body, the rear end of the snap-fit ​​arm is a suspended free end, a locking part protruding between the fixed end and the free end to engage with the snap-fit ​​part, and the free end is exposed on the rear end face of the main body.

[0014] In one embodiment, the resilient latch extends in the front-to-back direction, and the resilient latch and the snap-fit ​​arm are staggered in the front-to-back direction. When viewed in the vertical direction, the fixed end of the snap-fit ​​arm is flush with the rear end of the resilient latch.

[0015] In one embodiment, the snap-fit ​​portion protrudes from the outer wall surface of the inner shell, and the inner wall surface of the outer shell is recessed along the assembly path of the snap-fit ​​portion; the recessed groove extends along the front-back direction to the snap-fit ​​arm, and the locking portion is located at the end of the recessed groove.

[0016] Wherein, the width of the clearance groove in the left-right direction is smaller than the width of the snap-fit ​​arm in the left-right direction, and in the up-down direction, the thickness of the snap-fit ​​arm where the clearance groove is provided is greater than the thickness of the snap-fit ​​arm where the clearance groove is not provided.

[0017] In one embodiment, the front end of the locking portion is provided with a first inclined surface, the distance between the first inclined surface and the locking arm gradually increases from front to back, and the rear end of the locking portion is provided with a second inclined surface, the distance between the second inclined surface and the outer wall of the inner shell gradually decreases from front to back. During the process of inserting the inner shell into the inner cavity, the first inclined surface and the second inclined surface abut against each other to push the locking arm into the receiving space.

[0018] In one embodiment, the stop includes a push-pull portion, a stop portion connected to the push-pull portion, and a latch portion flexibly connected to the stop portion. The stop portion extends forward from the push-pull portion, and the latch portion extends forward from the end of the stop portion away from the push-pull portion. When the stop is in the final locked position, the upper side of the stop portion abuts against the elastic latch to prevent the elastic latch from flexing relative to the body, and the lower side of the stop portion prevents the snap-fit ​​arm from flexing into the receiving space. A snap-fit ​​block protrudes from the latch portion, and a first stop block corresponding to the snap-fit ​​block protrudes from the receiving space. When the stop is in the pre-locked position, the first stop block stops at the front end of the snap-fit ​​block. When the mating connector is inserted into the connector until the elastic latch is engaged with the mating connector, the latch portion is deformed by the pressure of the mating connector, causing the snap-fit ​​block to disengage from the first stop block, and the stop can move forward to the final locked position.

[0019] In one embodiment, the stop portion has an inclined surface at one end near the push-pull portion, and the distance between the inclined surface and the latching arm gradually decreases from the push-pull portion toward the latching portion, so as to form a separation gap between the push-pull portion and the latching arm.

[0020] In one embodiment, the stop further includes a flexible elastic arm connected to the push-pull portion and a hook portion connected to the elastic arm; the elastic arm is inserted into the receiving space in a front-rear direction, the hook portion protrudes from the elastic arm in a direction away from the latch portion, the front end of the hook portion is provided with a front abutment surface, the rear end of the hook portion is provided with a rear abutment surface, a second stop block corresponding to the hook portion is protruding in the receiving space, when the stop is in the pre-lock position, the front abutment surface of the hook portion stops the second stop block, and when the stop is in the final lock position, the rear abutment surface of the hook portion stops the second stop block;

[0021] The distance between the front abutment and the rear abutment and the latch portion gradually decreases along the direction from back to front, and the angle between the front abutment and the front-back direction is smaller than the angle between the rear abutment and the front-back direction.

[0022] In one embodiment, the connector further includes a seal installed between the inner shell and the outer shell; the rear end of the inner shell is recessed with a receiving groove, the seal is embedded in the receiving groove, and a rear plate extends integrally from the rear side of the main body, the rear plate covering the receiving groove to block the seal in the receiving groove, the seal being used to prevent moisture from entering the terminal from the rear end of the outer shell.

[0023] In one embodiment, the housing further includes a connecting wall that protrudes upward from the main body, the elastic latch is connected to the connecting wall, the connecting wall protrudes into the receiving space with a limiting block, the limiting block abutting above the stop member, and in the vertical direction, the distance between the limiting block and the stop member is less than the height of the snap-fit ​​portion.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] 1. The flexible snap-fit ​​arm is exposed in the receiving space for the stop to be inserted. During the insertion of the inner shell into the outer shell, the snap-fit ​​arm is lifted, causing it to flex and partially protrude into the receiving space, thus preventing the stop from being inserted. By detecting whether the stop can be inserted into the receiving space, it can be determined whether the snap-fit ​​arm is still in the lifted state, thereby detecting whether the inner shell and outer shell are properly assembled. Furthermore, since the stop is located on the side of the snap-fit ​​arm away from the inner shell, it shields the snap-fit ​​arm after being inserted into the receiving space, thus preventing deformation of the snap-fit ​​arm. This prevents the snap-fit ​​arm from shifting due to vibration during use and accidentally disengaging from the snap-fit ​​part, improving the stability of the snap-fit ​​arm engagement with the snap-fit ​​part. It also prevents damage to the snap-fit ​​arm from external impacts, effectively protecting the snap-fit ​​arm and improving the overall structural stability of the connector.

[0026] 2. The free end of the snap-fit ​​arm is exposed on the rear end of the main body, which makes it convenient for the user to move the free end of the snap-fit ​​arm during later maintenance and disassembly, thereby releasing the snap-fit ​​part from the locking part, simplifying the disassembly and assembly of the inner shell and the outer shell, and improving the convenience of maintenance work.

[0027] 3. Since the snap-fit ​​arm is a flexible elastic structure, and the stop is located above the snap-fit ​​arm, the stop prevents and limits the elastic latch above it. By staggering the elastic latch and snap-fit ​​arm in the front-to-back direction, and aligning the fixed end with the rear end of the elastic latch in the vertical direction, it can effectively ensure that the rigid structure of the outer shell is directly below the contact point between the stop and the elastic latch, avoiding the elastic part of the snap-fit ​​arm. This eliminates the influence of the flexible elastic structure of the snap-fit ​​arm on the stop preventing the elastic latch when the snap-fit ​​arm and the elastic latch are respectively arranged on the upper and lower sides of the stop, thus improving the structural stability of the stop preventing and limiting the elastic latch.

[0028] 4. In the vertical direction, the thickness of the snap-fit ​​arm where the clearance groove is provided is greater than the thickness of the snap-fit ​​arm where the clearance groove is not provided. This strengthens the structural strength at the connection point between the snap-fit ​​arm and the main body, prevents the snap-fit ​​arm from breaking due to prolonged bending use, and extends the service life of the snap-fit ​​arm.

[0029] 5. An inclined surface is provided at the end of the stop near the push-pull part, so that a separation gap is formed between the push-pull part and the snap-fit ​​arm. When the user applies a pushing or pulling force to the push-pull part, the push-pull part can offset the load transmitted downward to the snap-fit ​​arm by the stop by a certain amount of downward displacement, thereby reducing the load applied to the snap-fit ​​arm by the stop during the pushing process, preventing the snap-fit ​​arm from deforming or even breaking, and extending the service life of the snap-fit ​​arm.

[0030] 6. Both the front and rear abutments of the hook-up part are used to cooperate with the second stop to limit the movement of the stop. By setting a certain angle between the front and rear abutments and the front-to-back direction, the contact area between the hook-up part and the second stop is reduced, thereby reducing the resistance of the second stop to the stop. This makes it easier for the user to push the stop and provides a better user experience. At the same time, the angle between the front abutment and the front-to-back direction is smaller than the angle between the rear abutment and the front-to-back direction, so that the resistance of the stop moving from the pre-locked position to the final locked position is less than the resistance of moving from the final locked position to the pre-locked position, ensuring the stability of the stop in the final locked position. Attached Figure Description

[0031] Figure 1 This is an exploded structural diagram of the connector according to the first embodiment of the present invention;

[0032] Figure 2 for Figure 1 A schematic diagram of the connector structure;

[0033] Figure 3 for Figure 2 A cross-sectional view of the middle AA position, where the stop is not installed in the receiving space during the insertion of the inner shell into the outer shell;

[0034] Figure 4 for Figure 2 A cross-sectional view of the stopper being installed in the receiving space at position AA;

[0035] Figure 5 for Figure 2 Cross-sectional view at position BB;

[0036] Figure 6 for Figure 2 A cross-sectional view of the stop component in the pre-locked position at the CC position;

[0037] Figure 7 for Figure 1 A schematic diagram of the structure of the middle connector and the mating connector before assembly;

[0038] Figure 8 for Figure 7 A schematic diagram of the assembled structure of the middle connector and the mating connector;

[0039] Figure 9 for Figure 8 A cross-sectional view of the stopper at the DD position, where the stopper is in the final locking position;

[0040] Figure 10 for Figure 1 Schematic diagram of the inner and outer shell structure;

[0041] Figure 11 for Figure 10 Cross-sectional view at the location of the middle EE;

[0042] Figure 12 for Figure 10 Cross-sectional view at the FF position;

[0043] Figure 13 for Figure 1 Schematic diagram of the middle stop component;

[0044] Figure 14 for Figure 13 A cross-sectional view of the GG location.

[0045] Explanation of reference numerals in the accompanying drawings for specific embodiments:

[0046] 1. Connector 10. Outer shell 11. Main Body 111. Inner cavity 112. Back panel 12. Elastic locking mechanism 13. Clip-on arm 131. Locking part 132. First inclined plane 135. Fixed end 136. Free end 14. Containment Space 141. First stop 142. Second stop 15. Alternating groove 16. First through hole 17. Connecting wall 18. Limiting block 20. Inner shell 21. Connecting part 211. Second slope 22. Second through hole 23. Receiving tank 30. Stopping parts 31. Push-pull section 311. Grooving 32. Stopping part 321. Inclined surface 33. Latch 331. Card Block 34. Flexible arm 35. Hook-up section 351. Front contact 352. Back face 40. Terminal 50. Cables 60. Sealing components 61. Sealing body 62. External sealing part 63. Inner sealing part 64. Perforation 90. Plug-in connector 91. Locking block 92. Unlock Block X, forward / backward direction Y, left and right directions Z, Up / Down Direction Detailed Implementation

[0047] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0048] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0049] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0050] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0051] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0052] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only embodiments.

[0053] It should be noted that, according to Figures 1 to 14 As shown, in this embodiment of the invention, the X-axis, Y-axis, and Z-axis intersect each other in pairs. For ease of explanation, the front-back direction is defined as the X-axis direction, the direction of the X-axis arrow is forward, and the opposite direction of the X-axis arrow is backward. The up-down direction is defined as the Z-axis direction, and the left-right direction is defined as the Y-axis direction. In this embodiment, the X-axis and Y-axis directions are coplanar and relatively perpendicular, and the Z-axis direction is relatively perpendicular to the common plane of the X-axis and Y-axis. The up-down, left-right, and front-back directions are relatively perpendicular to each other. Further explanation: the term "parallel" in this application includes not only absolute parallelism but also approximately parallelism as commonly understood in engineering, such as "parallel" referring to an angle of -1° to 1° between lines, lines and surfaces, or surfaces. Similarly, "perpendicular" also includes not only absolute perpendicularity but also approximately perpendicularity as commonly understood in engineering, such as "perpendicular" referring to an angle of 89° to 91° between lines, lines and surfaces, or surfaces. Equal distances or equal angles include not only absolute equality, but also approximate equality as commonly understood in engineering, which means there can be a certain degree of error, such as a tolerance range of -1% to 1%.

[0054] Please see Figures 1 to 14The connector 1, as described in the first embodiment of this utility model, is used to engage with a pair of mating connectors 90 for transmitting current or signals. The connector 1 includes a housing 10, an inner housing 20 connected to the housing 10, a stop 30 mounted on the housing 10, and terminals 40 housed within the inner housing 20. The housing 10 is used for inserting the mating connectors 90, the inner housing 20 is used to fix the terminals 40 within the housing 10, the stop 30 is used to detect whether the connector 1 and the mating connectors 90 are properly engaged, and the terminals 40 are used for electrical connection with the mating connectors 90 to transmit current or signals. Furthermore, the mating connector 90 is provided with a locking block 91 and an unlocking block 92. When the mating connector 90 is mated with the connector 1, the locking block 91 engages with the housing 10 to fix the mating connector 90 to the connector 1. At the same time, the unlocking block 92 presses against the stop member 30 to put the stop member 30 in an unlocked state. The stop member 30 in the unlocked state can move from the pre-locked position to the final locked position. The stop member 30 in the final locked position is used to keep the housing 10 engaged with the locking block 91 to prevent the mating connector 90 from disengaging from the connector 1.

[0055] Please see Figures 1 to 12 The housing 10 is located outside the connector 1 to protect other components inside it. The housing 10 includes a main body 11, a snap-fit ​​arm 13 connecting the main body 11, and a resilient latch 12 spaced apart from the snap-fit ​​arm 13. The main body 11 has an inner cavity 111 for the inner shell 20 to be installed. The outer rear end of the main body 11 has a receiving space 14 recessed forward for the stop 30 to be installed. The receiving space 14 is located below the elastic latch 12. The width of the receiving space 14 in the left-right direction is greater than the width of the snap-fit ​​arm 13 in the left-right direction. The space at the rear end of the outer shell 10 for the stop 30 to be installed and slide back and forth belongs to the receiving space 14. The elastic latch 12 is used to engage with the mating connector 90. The snap-fit ​​arm 13 is located between the inner cavity 111 and the receiving space 14. The snap-fit ​​arm 13 has a locking part 131. The snap-fit ​​arm 13 engages with the inner shell 20 through the locking part 131. The elastic latch 12 and the snap-fit ​​arm 13 are respectively exposed on opposite sides of the receiving space 14, and both the elastic latch 12 and the snap-fit ​​arm 13 can be elastically flexed relative to the main body 11. Understandably, the housing 10 is either a single piece or assembled from multiple parts. There is no restriction on whether the housing 10 is a single piece. The housing 10 is ensured to obtain the main body 11 through an integrated molding or assembly method, and both the elastic latch 12 and the snap-fit ​​arm 13 can be elastically flexed relative to the main body 11.

[0056] The elastic latch 12 extends in the front-to-back direction. The rear end of the elastic latch 12 is in a pressing position, and the front end of the elastic latch 12 engages with the locking block 91 of the mating connector 90 to fix the mating connector 90 on the connector 1. By pressing the rear end of the elastic latch 12, the elastic latch 12 can bend relative to the main body 11, thereby controlling the front end of the elastic latch 12 to disengage from the locking block 91. At this time, the mating connector 90 can be pulled out from the outer shell 10. The latching arm 13 extends in the front-to-back direction. The latching arm 13 and the elastic latch 12 are located on the upper and lower sides of the receiving space 14, respectively. The latching arm 13 is used to engage with the inner shell 20 to fix the inner shell 20 inside the outer shell 10. The latching arm 13 is cantilevered on the main body 11. The front end of the latching arm 13 is a fixed end 135 connected to the main body 11, and the rear end of the latching arm 13 is a suspended free end 136. The free end 136 is exposed on the rear end face of the main body 11. The free end 136 of the latching arm 13 can be moved through the rear end face of the main body 11, thereby disengaging the latching arm 13 from the inner shell 20, which facilitates the removal of the inner shell 20 from the outer shell 10 during later maintenance. In this embodiment, the elastic latch 12 and the snap-fit ​​arm 13 are staggered in the front-rear direction. The rear end of the elastic latch 12 is planar and arranged perpendicular to the front-rear direction. Viewed from the top and bottom, the fixed end 135 of the front end of the snap-fit ​​arm 13 is flush with the rear end of the elastic latch 12. Since the snap-fit ​​arm 13 is an elastic structure, setting the front end of the snap-fit ​​arm 13 flush with the rear end of the elastic latch 12 ensures that the rigid structure of the outer shell 10 is directly below the abutment position of the stop member 30 corresponding to the elastic latch 12, thereby avoiding the snap-fit ​​arm. In the elastic part of 13, the stop 30 is inserted between the snap-fit ​​arm 13 and the elastic latch 12 during use. At the final locking position, the stop 30 needs to keep the outer shell 10 in a snap-fit ​​state with the latch block 91. That is, the stop 30 needs to prevent the elastic latch 12 from bending and deforming. By setting the lower part of the elastic latch 12 as a rigid structure of the outer shell 10, the stop 30 is not affected by the elastic structure of the snap-fit ​​arm 13 at the position of stopping the elastic latch 12, thereby improving the stability of the stop 30 in stopping the elastic latch 12.

[0057] Please see Figures 1 to 9 The inner shell 20 is inserted into the inner cavity 111 from front to back. The inner shell 20 has multiple terminal slots 40 to accommodate the terminals 40. The inner shell 20 has a snap-fit ​​portion 21 that interferes with the snap-fit ​​arm 13 in the front-to-back direction. After the snap-fit ​​arm 13 flexes and deforms, it engages with the snap-fit ​​portion 21 to fix the inner shell 20 inside the outer shell 10. (See also...) Figures 1 to 12In this embodiment, the snap-fit ​​part 21 is protruding in the shape of a protrusion on the outer wall surface of the inner shell 20, and the inner wall surface of the outer shell 10 is recessed with a relief groove 15 on the assembly path corresponding to the snap-fit ​​part 21. The recess 15 is positioned corresponding to the snap-fit ​​part 21. Located below the snap-fit ​​arm 13, the recess 15 allows the snap-fit ​​part 21 to move aside during the insertion of the inner shell 20 into the inner cavity 111. The recess 15 extends along the front-rear direction to the snap-fit ​​arm 13. A locking part 131 is located at the end of the recess 15, meaning the end of the recess 15 is closer to the snap-fit ​​arm 13 in the front-rear direction. The locking part 131 engages with the snap-fit ​​part 21. During the insertion of the inner shell 20 into the inner cavity 111, the snap-fit ​​part 21 abuts against the locking part 131. As the locking part 131 crosses the snap-fit ​​part 21, the snap-fit ​​part 21 tilts the snap-fit ​​arm 13 towards the side closer to the elastic latch 12. The side is pushed up so that the latching arm 13 at least partially protrudes into the receiving space 14, thereby preventing the stop 30 from being inserted into the receiving space 14. When the inner shell 20 and the outer shell 10 are assembled in place (here, "assembled in place" means that the inner shell 20 and the outer shell 10 are relatively fixed to each other by the latching part 131 and the latching part 21), the latching part 131 is fixed to the latching part 21 by the elastic recovery of the latching arm 13. The latching arm 13 no longer prevents the stop 30 from being inserted into the receiving space 14. Thus, by detecting whether the stop 30 can be inserted into the receiving space 14, it can be determined whether the latching part 21 and the latching arm 13 are properly engaged, thereby realizing the detection of whether the assembly between the inner shell 20 and the outer shell 10 is in place. In another embodiment, the latching portion 21 is recessed into the outer wall surface of the inner shell 20 in the shape of a groove. The locking portion 131 is inserted into the latching portion 21 and engages with the latching portion 21. During the process of inserting the inner shell 20 into the inner cavity 111, the locking portion 131 will abut against the outer wall surface of the inner shell 20. The outer wall surface of the inner shell 20 will push the latching arm 13 towards the elastic latch 12 so that the latching arm 13 at least partially protrudes into the receiving space 14, preventing the stop member 30 from being installed into the receiving space 14. Until the locking portion 131 is inserted into the latching portion 21, the deformation of the latching arm 13 disappears. At this time, the stop member 30 can be smoothly installed into the receiving space 14. Understandably, during the process of inserting the inner shell 20 into the inner cavity 111, at least at some point, the inner shell 20 will push the latching arm 13 into the receiving space 14, so that part of the structure of the latching arm 13 protrudes into the receiving space 14 to prevent the stop 30 from being smoothly installed into the receiving space 14. When the inner shell 20 is assembled with the outer shell 10, the latching arm 13 is in a natural flat state, that is, the latching arm 13 no longer bears the pressure of the inner shell 20. At this time, the latching arm 13 no longer protrudes into the receiving space 14 to block the stop 30. By detecting whether the stop 30 can be installed into the receiving space 14, it can be determined whether the assembly between the inner shell 20 and the outer shell 10 is in place.

[0058] The front end of the locking part 131 is provided with a first inclined surface 132, and the distance between the first inclined surface 132 and the locking arm 13 gradually increases from front to back. The rear end of the locking part 21 is provided with a second inclined surface 211, and the distance between the second inclined surface 211 and the outer wall of the inner shell 20 gradually decreases from front to back. During the process of inserting the inner shell 20 into the inner cavity 111, the first inclined surface 132 and the second inclined surface 211 abut against each other to push the locking arm 13 into the receiving space 14. In this embodiment, the width of the recess 15 in the left-right direction is smaller than the width of the snap-fit ​​arm 13 in the left-right direction. In the up-down direction, the thickness of the snap-fit ​​arm 13 where the recess 15 is provided is greater than the thickness of the snap-fit ​​arm 13 where the recess 15 is not provided. That is, the thickness of the snap-fit ​​arm 13 varies in the up-down direction. The recess 15 is located at the fixed end 135 of the snap-fit ​​arm 13, and the thickness at the fixed end 135 of the snap-fit ​​arm 13 is greater than the thickness at the free end 136. This strengthens the structural strength at the connection point between the snap-fit ​​arm 13 and the main body 11, thereby preventing the snap-fit ​​arm 13 from breaking due to long-term bending and flexing, and extending the service life of the snap-fit ​​arm 13.

[0059] Please see Figures 1 to 14The stop 30 is assembled from back to front into the receiving space 14 and is located on the side of the latching arm 13 away from the inner shell 20. Understandably, in order to ensure that the stop 30 is installed into the receiving space 14, the bottom surface of the stop 30 and the top surface of the latching arm 13 are in clearance fit. The clearance between the bottom surface of the stop 30 and the top surface of the latching arm 13 is small, about 0.05 mm to 0.2 mm. This clearance can prevent the stop 30 from rubbing against the latching arm 13 in its natural state (i.e., not being lifted) during the installation of the stop into the receiving space 14, making it easier and more convenient to install the stop 30 into the receiving space 14. During the process of inserting the inner shell 20 into the inner cavity 111, the inner shell 20 will push the snap-fit ​​arm 13 upward to a height greater than the reserved gap between the stop 30 and the snap-fit ​​arm 13. This allows the snap-fit ​​arm 13 to effectively prevent the stop 30 from being inserted into the receiving space 14. This ensures that by detecting whether the stop 30 can be inserted into the receiving space 14, it can be determined whether the inner shell 20 and the outer shell 10 are properly assembled. Furthermore, the stop member 30 slides within the receiving space 14 in the front-to-back direction. The stop member 30 moves relative to the outer casing 10 between a pre-locked position and a final locked position. When the stop member 30 is in the pre-locked position, it maintains a blocking relationship with the outer casing 10, keeping it positioned at the pre-locked position. The elastic latch 12 can elastically flex relative to the main body 11. When the connector 1 is inserted into the mating connector 90 until the elastic latch 12 engages with the latching block 91 of the mating connector 90, the unlocking block 92 of the mating connector 90 releases the blocking relationship between the stop member 30 and the outer casing 10. At this time, the stop member 30 can... Moving from the pre-lock position to the final lock position, in the final lock position, the upper and lower sides of the stop member 30 respectively stop the latching arm 13 and the elastic latch 12. By detecting whether the stop member 30 can be inserted into the receiving space 14, it is determined whether the assembly of the inner shell 20 and the outer shell 10 is in place. By detecting whether the stop member 30 can move from the pre-lock position to the final lock position, it is determined whether the insertion of the connector 1 and the mating connector 90 is in place. Thus, the stop member 30 can simultaneously detect whether the assembly between the inner shell 20 and the outer shell 10 and the assembly between the outer shell 10 and the mating connector 90 is in place, thereby ensuring the reliability of the connector 1. It can be understood that the stop member 30 can also only detect whether the assembly between the inner shell 20 and the outer shell 10 is in place, that is, the stop member 30 can move within the receiving space 14 when the outer shell 10 and the mating connector 90 are not assembled. Users can choose whether the stop member 30 needs to detect whether the assembly between the outer shell 10 and the mating connector 90 is in place according to actual needs.In this embodiment, the outer shell 10 also includes a connecting wall 17 extending upward from the main body 11. The elastic latch 12 is connected to the connecting wall 17. The connecting wall 17 extends into the receiving space 14 with a limiting block 18. The limiting block 18 stops above the stop member 30. In the vertical direction, the distance between the limiting block 18 and the stop member 30 is less than the height of the snap-fit ​​part 21. This is because the height at which the snap-fit ​​arm 13 is lifted is actually the height of the snap-fit ​​part 21. By ensuring that the gap between the limiting block 18 and the stop member 30 is less than the height of the snap-fit ​​part 21, it is ensured that when the snap-fit ​​arm 13 is lifted by the inner shell 20, i.e., when the inner shell 20 and the outer shell 10 are not properly assembled, the stop member 30 will interfere with the limiting block 18, preventing the stop member 30 from being inserted into the receiving space 14.

[0060] The stop 30 includes a push-pull portion 31, a stop portion 32 connected to the push-pull portion 31, and a latch portion 33 flexibly connected to the stop portion 32. The push-pull portion 31 is a straight plate extending along a common surface in the vertical and horizontal directions. The push-pull portion 31 is located at the rear end of the stop 30 and is used for the human hand to push and pull the stop 30 to move. The stop portion 32 extends forward from the push-pull portion 31, and the latch portion 33 extends forward from the end of the stop portion 32 away from the push-pull portion 31. The height dimension of the stop portion 32 in the vertical direction is greater than that of the latch portion 33 in the vertical direction. When the stop member 30 is in the final locked position, the upper side of the stop portion 32 abuts against the elastic latch 12 to prevent the elastic latch 12 from bending relative to the main body 11, thereby preventing the elastic latch 12 from separating from the latch block 91 of the mating connector 90, ensuring the fastening stability of the connector 1 and the mating connector 90. The lower side of the stop portion 32 stops the latch arm 13 from bending into the receiving space 14 to prevent the latch portion 21 from separating from the latch portion 131, ensuring the fastening stability between the inner shell 20 and the outer shell 10. In this embodiment, a latching block 331 protrudes from the latching part 33, and a first stop block 141 corresponding to the latching block 331 protrudes from the receiving space 14. When the stop member 30 is in the pre-locked position, the first stop block 141 stops at the front end of the latching block 331, thereby forming a stopping relationship between the stop member 30 and the outer shell 10 in the pre-locked position, so as to keep the stop member 30 in the pre-locked position and prevent human error from pushing the stop member 30 to the final locked position. When the mating connector 90 is inserted into the connector 1 until the elastic latch 12 is engaged with the mating connector 90, that is, when the mating connector 90 and the connector 1 are fully engaged, the unlocking block 92 of the mating connector 90 will lock the latching part 33. When the latch 33 is pushed upward, it is bent and deformed upward by the pressure of the mating connector 90, causing the locking block 331 to disengage from the first stop block 141. This releases the blocking relationship between the stop member 30 and the housing 10 in the pre-lock position. At this time, the stop member 30 can move forward to the final lock position. Thus, only when the mating connector 90 and the connector 1 are fully engaged will the latch 33 be pushed up and deformed by the unlocking block 92, causing the locking block 331 to disengage from the first stop block 141. Then the stop member 30 can move forward from the pre-lock position to the final lock position. Therefore, by detecting whether the stop member 30 can move from the pre-lock position to the final lock position, it can be determined whether the mating connector 90 and the connector 1 are fully engaged.In another embodiment, the latching part 33 can be directly connected to the push-pull part 31, and the stop part 32 is connected to the upper side of the latching part 33 or arranged at a distance from the latching part 33. It can be understood that the specific structure and shape of the latching part 33 are not limited here, ensuring that the latching part 33 can be deformed by the unlocking block 92 of the mating connector 90, thereby causing the locking block 331 on the latching part 33 to disengage from the first stop block 141. The first stop block 141 no longer blocks the movement of the stop member 30, and the stop member 30 can move from the pre-lock position to the final lock position, thereby ensuring that the stop member 30 can detect whether the connector 1 and the mating connector 90 are properly engaged.

[0061] The stop portion 32 has an inclined surface 321 at one end near the push-pull portion 31. The distance between the inclined surface 321 and the latching arm 13 decreases in the direction from the push-pull portion 31 to the latching portion 33, so as to form a separation gap between the push-pull portion 31 and the latching arm 13. This allows the push-pull portion 31 to have displacement space in the vertical direction. When the user applies a pushing or pulling force to the push-pull portion 31, the force direction of the push-pull portion 31 cannot be completely horizontal. That is, the user's hand usually applies a certain downward pressure to the push-pull portion 31 when applying the pushing or pulling force. By providing an inclined surface 321 at one end of the stop portion 32 near the push-pull portion 31, the push-pull portion 31 can offset part of the downward pressure by displacing downward, thereby reducing the load applied to the latching arm 13 by the stop portion 30 during the pushing process, avoiding breakage and damage to the latching arm 13, and extending the service life of the latching arm 13.

[0062] The stop 30 also includes a flexible elastic arm 34 connected to the push-pull portion 31 and a hook portion 35 connected to the elastic arm 34. The elastic arm 34 is inserted into the receiving space 14 in the front-back direction. The rear end of the elastic arm 34 is connected to the push-pull portion 31, and the front end of the elastic arm 34 is suspended on one side of the latch portion 33 in the left-right direction and spaced apart from the latch portion 33. The hook portion 35 protrudes from the end of the elastic arm 34 away from the latch portion 33. The elastic arm 34 can be flexed and deformed relative to the push-pull portion 31 in the left-right direction. The receiving space 14 is provided with a second stop 142 corresponding to the hook portion 35. The front end of the hook portion 35 is provided with a front abutment surface 351, and the rear end of the hook portion 35 is provided with a rear abutment surface 352. When the stop member 30 is in the pre-lock position, the front abutment surface 351 of the hook portion 35 stops the second stop 142. When the stop member 30 is in the final lock position, the rear abutment surface 352 of the hook portion 35 stops the second stop 142. That is, during the process of the stop member 30 moving forward from the pre-lock position to the final lock position, the second stop 142 applies force to the hook portion 35. The applied pressure causes the elastic arm 34 to flex toward the latch 33. Similarly, during the process of the stop 30 moving from the final lock position to the pre-lock position, the second stop 142 will also apply pressure to the hook 35, causing the elastic arm 34 to flex toward the latch. Thus, during the movement of the stop 30 between the pre-lock position and the final lock position, it needs to overcome the resistance between the hook 35 and the second stop 142. In turn, the second stop 142 and the front abutment surface 351 or the rear abutment surface 352 of the hook 35 abut against each other to achieve the positioning function of the stop 30. In this embodiment, the distance between the front abutment surface 351 and the rear abutment surface 352 and the latching part 33 gradually decreases in the direction from back to front. The angle between the front abutment surface 351 and the front-back direction is smaller than the angle between the rear abutment surface 352 and the front-back direction. Setting a certain inclined angle between the front abutment surface 351 and the rear abutment surface 352 and the front-back direction can effectively reduce the contact area between the hook part 35 and the second stop 142, thereby reducing the resistance of the second stop 142 to the stop member 30, making it easier for the user to push the stop member 30. Furthermore, making the angle between the front abutment surface 351 and the front-back direction smaller than the angle between the rear abutment surface 352 and the front-back direction makes the resistance of the stop member 30 moving from the pre-locked position to the final locked position less than the resistance of moving from the final locked position to the pre-locked position, ensuring that the stop member 30 is held more stably in the final locked position. Further, the push-pull part 31 has a groove 311 recessed on the side away from the latching part 33. The slot 311 is located at the middle position of the push-pull part 31 in the left-right direction, and the slot 311 penetrates the push-pull part 31 in the up-down direction.Two elastic arms 34 are provided, and the two elastic arms 34 are symmetrically arranged on the left and right sides of the latch part 33. The latch part 33 is located at the middle position of the push-pull part 31 in the left and right direction. By providing a slot 311 at the middle position of the push-pull part 31 in the left and right direction, the hardness at the middle position of the push-pull part 31 is reduced. The push-pull part 31 can make it easier for the elastic arms 34 on both sides to flex and deform in opposite directions through its own deformation, thereby reducing the resistance in the process of pushing the stop 30, and making it easier for the user to push the stop 30.

[0063] Please see Figures 1 to 9 The terminal 40 is installed inside the inner shell 20 and fixed inside the outer shell 10 by the inner shell 20. When the outer shell 10 is mated with the mating connector 90, the terminal 40 is electrically connected to the mating connector 90 to transmit current or signals. In this embodiment, the connector 1 is also provided with a cable 50. One end of the cable 50 is connected to the terminal 40, and the other end of the cable 50 passes through the inner shell 20 and the outer shell 10 in sequence and extends to the outside to ensure that current or signals are transmitted to the outside.

[0064] Please see Figure 1 , Figure 3 , Figure 4 , Figure 6 and Figure 10The connector 1 also includes a seal 60 installed between the inner shell 20 and the outer shell 10. The rear end of the inner shell 20 is recessed with a receiving groove 23, and the seal 60 is embedded in the receiving groove 23. A rear plate 112 extends integrally from the rear side of the main body 11. The rear plate 112 covers the receiving groove 23 to block the seal 60 in the receiving groove 23. The seal 60 is used to prevent moisture from entering the terminal 40 from the rear end of the outer shell 10. The rear plate 112 has a first through hole 16, and the rear end of the inner shell 20 has a second through hole 22 corresponding to the first through hole 16. The sealing member 60 has a through hole 64 that connects the first through hole 16 and the second through hole 22 respectively. During assembly, one end of the cable 50 passes through the first through hole 16 and the through hole 64 and is riveted to the terminal 40. Then, the end of the cable 50 with the terminal 40 riveted is inserted into the inner shell 20 through the second through hole 22. Then, the inner shell 20 with the terminal 40 installed is inserted into the inner cavity 111 of the outer shell 10 until the snap-fit ​​arm 13 and the snap-fit ​​part 21 are engaged. Finally, the stop member 30 is installed into the receiving space 14. Understandably, the assembly process can also involve first riveting the terminal 40 onto the cable 50, then passing the end of the cable 50 with the riveted terminal 40 sequentially through the first through hole 16, the through hole 64, and the second through hole 22 before placing it inside the inner shell 20, then assembling the inner shell 20 into the inner cavity 111, and finally assembling the stop member 30 into the receiving space 14. In this embodiment, the sealing member 60 includes a sealing body 61, an outer sealing portion 62 connecting the sealing body 61, and an inner sealing portion 63. The sealing body 61 is a straight plate extending along the common surface in the vertical and horizontal directions. The through hole 64 penetrates the sealing body 61 in the front-back direction. The outer sealing part 62 is wrapped around the outer wall of the sealing body 61 and presses against the inner wall of the receiving groove 23. The outer sealing part 62 is used to seal the joint position between the inner shell 20 and the sealing element 60. The inner sealing part 63 protrudes from the inner wall of the through hole 64 and is used to seal the joint position between the cable 50 and the sealing element 60, thereby preventing moisture from entering the terminal 40 from the second through hole 22. In the front-back direction, the positions of the outer sealing part 62 and the inner sealing part 63 overlap, ensuring that the forces exerted by the outer sealing part 62 and the inner sealing part 63 on the sealing body 61 in the direction perpendicular to the front-back direction are in the same plane, thereby preventing the sealing body 61 from being misaligned and deformed in the front-back direction, and improving the sealing effect of the sealing element 60. Understandably, the number of the first through hole 16, the second through hole 22, and the through hole 64 are the same and correspond one-to-one. There is no limit to the specific number of them. The number of terminals 40 can be adjusted according to the needs.

[0065] In summary, this utility model provides a connector 1, which has the following advantages compared with the prior art:

[0066] 1. The flexible snap-fit ​​arm 13 is exposed in the receiving space 14 into which the stop member 30 is inserted. During the process of the inner shell 20 being inserted into the outer shell 10, the snap-fit ​​arm 13 will be lifted up, causing the snap-fit ​​arm 13 to bend and partially protrude into the receiving space 14, thereby preventing the stop member 30 from being inserted into the receiving space 14. By detecting whether the stop member 30 can be inserted into the receiving space 14, it can be determined whether the snap-fit ​​arm 13 is still in the lifted state, thereby realizing the detection of whether the inner shell 20 and the outer shell 10 are properly assembled. Furthermore, since the stop 30 is located on the side of the latching arm 13 away from the inner shell 20, that is, the stop 30 will block the latching arm 13 after being installed in the receiving space 14, the stop 30 can stop the deformation of the latching arm 13, preventing the latching arm 13 from shifting due to vibration during use and accidentally loosening from the latching part 21, thus improving the stability of the latching arm 13 and the latching part 21 engagement, and preventing damage to the latching arm 13 from external impacts, effectively protecting the latching arm 13 and improving the overall structural stability of the connector 1.

[0067] 2. The free end 136 of the snap-fit ​​arm 13 is exposed on the rear end face of the main body 11, which makes it convenient for the user to move the free end 136 of the snap-fit ​​arm 13 during the later maintenance and disassembly process, thereby releasing the snap-fit ​​part 21 from the snap-fit ​​part 131, simplifying the disassembly and assembly operation between the inner shell 20 and the outer shell 10, and improving the convenience of maintenance work.

[0068] 3. Since the latching arm 13 is a flexible elastic structure, and the stop 30 is located above the latching arm 13, the stop 30 stops and limits the elastic latch 12 above it. By staggering the elastic latch 12 and the latching arm 13 in the front-to-back direction, and aligning the fixed end 135 with the rear end of the elastic latch 12 in the vertical direction, it can be effectively ensured that the rigid structure of the outer shell 10 is directly below the contact position between the stop 30 and the elastic latch 12, avoiding the elastic part of the latching arm 13. This eliminates the influence of the flexible elastic structure of the latching arm 13 on the stop 30's blocking of the elastic latch 12 when the latching arm 13 and the elastic latch 12 are respectively arranged on the upper and lower sides of the stop 30, thus improving the structural stability of the stop 30 in stopping and limiting the elastic latch 12.

[0069] 4. In the vertical direction, the thickness of the snap-fit ​​arm 13 where the relief groove 15 is provided is greater than the thickness of the snap-fit ​​arm 13 where the relief groove 15 is not provided, thereby strengthening the structural strength at the connection position between the snap-fit ​​arm 13 and the main body 11, preventing the snap-fit ​​arm 13 from breaking due to long-term bending use, and extending the service life of the snap-fit ​​arm 13.

[0070] 5. An inclined surface 321 is provided at one end of the stop part 32 near the push-pull part 31, so that a separation gap is formed between the push-pull part 31 and the snap-fit ​​arm 13. When the user applies a pushing or pulling force to the push-pull part 31, the push-pull part 31 can offset the load transmitted downward to the snap-fit ​​arm 13 by the stop member 30 through a certain amount of downward displacement, thereby reducing the load applied to the snap-fit ​​arm 13 by the stop member 30 during the pushing process, preventing the snap-fit ​​arm 13 from deforming or even breaking, and extending the service life of the snap-fit ​​arm 13.

[0071] 6. The front abutment surface 351 and the rear abutment surface 352 of the hook-up portion 35 are both used to cooperate with the second stop block 142 to limit the movement of the stop member 30. By setting a certain inclined angle between the front abutment surface 351 and the rear abutment surface 352 and the front-rear direction, the contact area between the hook-up portion 35 and the second stop block 142 is reduced, thereby reducing the resistance of the second stop block 142 to the stop member 30. This makes it easier for the user to push the stop member 30, resulting in a better user experience. At the same time, the angle between the front abutment surface 351 and the front-rear direction is smaller than the angle between the rear abutment surface 352 and the front-rear direction, so that the resistance of the stop member 30 moving from the pre-lock position to the final lock position is less than the resistance of moving from the final lock position to the pre-lock position, ensuring the stability of keeping the stop member 30 in the final lock position.

[0072] 7. Two elastic arms 34 are connected to the push-pull part 31 and are symmetrical about the left and right sides of the latch part 33. This allows the elastic arms 34 on both sides to deform towards each other during the movement of the stop member 30. By opening a slot 311 through the push-pull part 31, the stiffness of the push-pull part 31 in the left and right directions is reduced, making it easier for the elastic arms 34 on both sides to deform towards each other. This reduces the resistance during the movement of the stop member 30, making it easier for the user to push the stop member 30 and ensuring a better user experience.

[0073] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0074] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A connector for mating with a pair of mating connectors, characterized in that, include: The housing includes a main body, a snap-fit ​​arm connecting the main body, and an elastic latch spaced apart from the snap-fit ​​arm; the main body has an inner cavity inside and a receiving space outside the main body; the elastic latch is used to engage with the mating connector; the snap-fit ​​arm is located between the inner cavity and the receiving space; the snap-fit ​​arm has a locking part; the elastic latch and the snap-fit ​​arm are respectively exposed on opposite sides of the receiving space and can both be elastically flexed relative to the main body; The inner shell is inserted into the inner cavity from front to back, and the inner shell is provided with a snap-fit ​​part that snaps into the locking part in the front-to-back direction; Terminals are housed within the inner casing; and A stop member is assembled from back to front in the receiving space and located on the side of the snap-fit ​​arm away from the inner shell. The stop member moves relative to the outer shell between a pre-lock position and a final lock position. When the stop member is in the pre-lock position, the resilient latch can elastically flex relative to the main body. When the connector is inserted into the mating connector until the resilient latch engages with the mating connector, the stop member can move from the pre-lock position to the final lock position. In the final lock position, the upper and lower sides of the stop member respectively block the snap-fit ​​arm and the resilient latch. During the insertion of the inner shell into the inner cavity, the snap-fit ​​arm will be pushed up toward the side closer to the elastic latch, so that the snap-fit ​​arm elastically deforms and at least partially protrudes into the receiving space to block the insertion of the stop. When the inner shell and the outer shell are assembled in place, the locking part is snapped and fixed with the snap-fit ​​part by the elastic recovery of the snap-fit ​​arm, and the snap-fit ​​arm no longer blocks the insertion of the stop.

2. The connector according to claim 1, characterized in that, The snap-fit ​​arm extends in the front-back direction. The front end of the snap-fit ​​arm is a fixed end connected to the main body, and the rear end of the snap-fit ​​arm is a suspended free end. A locking part protrudes between the fixed end and the free end to engage with the snap-fit ​​part. The free end is exposed on the rear end face of the main body.

3. The connector according to claim 2, characterized in that, The elastic latch extends in the front-to-back direction, and the elastic latch and the snap-fit ​​arm are staggered in the front-to-back direction. When viewed in the vertical direction, the fixed end of the snap-fit ​​arm is flush with the rear end of the elastic latch.

4. The connector according to claim 1, characterized in that, The snap-fit ​​part protrudes from the outer wall surface of the inner shell, and the inner wall surface of the outer shell is recessed along the assembly path of the snap-fit ​​part; the recessed groove extends along the front-back direction to the snap-fit ​​arm, and the locking part is located at the end of the recessed groove. Wherein, the width of the clearance groove in the left-right direction is smaller than the width of the snap-fit ​​arm in the left-right direction, and in the up-down direction, the thickness of the snap-fit ​​arm where the clearance groove is provided is greater than the thickness of the snap-fit ​​arm where the clearance groove is not provided.

5. The connector according to claim 4, characterized in that, The front end of the locking part is provided with a first inclined surface, and the distance between the first inclined surface and the locking arm gradually increases from front to back. The rear end of the locking part is provided with a second inclined surface, and the distance between the second inclined surface and the outer wall of the inner shell gradually decreases from front to back. During the process of inserting the inner shell into the inner cavity, the first inclined surface and the second inclined surface abut against each other to push the locking arm into the receiving space.

6. The connector according to claim 1, characterized in that, The stop includes a push-pull portion, a stop portion connected to the push-pull portion, and a latch portion flexibly connected to the stop portion. The stop portion extends forward from the push-pull portion, and the latch portion extends forward from the end of the stop portion away from the push-pull portion. When the stop is in the final locked position, the upper side of the stop portion abuts against the elastic latch to prevent the elastic latch from flexing relative to the main body, and the lower side of the stop portion prevents the snap-fit ​​arm from flexing into the receiving space. A snap-fit ​​block protrudes from the latch portion, and a first stop block corresponding to the snap-fit ​​block protrudes from the receiving space. When the stop is in the pre-locked position, the first stop block stops at the front end of the snap-fit ​​block. When the mating connector is inserted into the connector until the elastic latch is engaged with the mating connector, the latch portion is deformed by the pressure of the mating connector, causing the snap-fit ​​block to disengage from the first stop block, and the stop can move forward to the final locked position.

7. The connector according to claim 6, characterized in that, The stop portion has an inclined surface at one end near the push-pull portion. The distance between the inclined surface and the latching arm gradually decreases from the push-pull portion toward the latch portion, so as to form a separation gap between the push-pull portion and the latching arm.

8. The connector according to claim 6, characterized in that, The stop further includes a flexible elastic arm connected to the push-pull portion and a hook portion connected to the elastic arm; the elastic arm is inserted into the receiving space in the front-rear direction, the hook portion protrudes from the elastic arm in the direction away from the latch portion, the front end of the hook portion is provided with a front abutment surface, the rear end of the hook portion is provided with a rear abutment surface, a second stop block corresponding to the hook portion is protruding in the receiving space, when the stop is in the pre-lock position, the front abutment surface of the hook portion stops the second stop block, when the stop is in the final lock position, the rear abutment surface of the hook portion stops the second stop block; The distance between the front abutment and the rear abutment and the latch portion gradually decreases along the rear-to-front direction, and the angle between the front abutment and the front-to-back direction is smaller than the angle between the rear abutment and the front-to-back direction.

9. The connector according to claim 1, characterized in that, The connector also includes a seal installed between the inner shell and the outer shell; the rear end of the inner shell is recessed with a receiving groove, the seal is embedded in the receiving groove, and a rear plate extends integrally from the rear side of the main body, the rear plate covering the receiving groove to block the seal in the receiving groove, the seal being used to prevent moisture from entering the terminal from the rear end of the outer shell.

10. The connector according to claim 1, characterized in that, The outer casing also includes a connecting wall that protrudes upward from the main body, the elastic buckle is connected to the connecting wall, the connecting wall protrudes into the receiving space with a limiting block, the limiting block stops above the stop member, and in the vertical direction, the distance between the limiting block and the stop member is less than the height of the snap-fit ​​portion.

Images