Female end plastic shell and connector

Abstract

The utility model belongs to the technical field of connectors, and discloses a female end plastic shell and a connector. The female-end plastic shell comprises a body, a plugging arm and a protection structure, the body is used for installing a terminal, the plugging arm is used for locking or loosening the relative position of the female-end plastic shell and a male-end plastic shell, the plugging arm comprises an abutting part and an elastic part which are fixedly connected, the elastic part is connected to the body, and the elastic part can deform so that the abutting part can be close to the body, and the protection structure is used for protecting the female-end plastic shell. The protection structure comprises a connecting part and a limiting part, one end of the connecting part is fixedly connected with the body, the other end of the connecting part is connected with the limiting part, the limiting part and the body are arranged in a spaced mode, and the abutting part is limited between the body and the limiting part and can abut against the limiting part. The female end plastic shell can prevent the elastic part from losing elasticity or fatigue fracture, ensures the normal plugging function of the female end plastic shell, and further ensures the stable connection of a connector and the stable circulation of current or signals.

Description

Technical Field

[0001] This utility model relates to the field of connector technology, and in particular to a female end plastic shell and connector. Background Technology

[0002] Connectors, also known as plugs or connectors, are fundamental components in electronic systems used to transmit electrical signals or current. Their core function is to establish a separable electrical connection at points of blockage in circuits, allowing current or signals to flow stably and ensuring normal system operation. Connectors typically form electrical contacts through mating male and female terminals. The female terminal of a connector usually consists of a female housing and terminals that insert into the housing.

[0003] To ensure a secure connection, the female end shell typically has a locking block that mates with the male end shell. This locking block is located on the elastic part that connects to the female end shell body. During mating, the elastic part is compressed and deformed towards the body by the interference force of the male end shell until the locking block enters the slot of the male end shell. The elastic part then resets, and the locking block engages in the slot, locking the male and female ends together. At this point, the connector is in the assembled state. When it is necessary to separate the male and female ends, pressure can be applied to the elastic part to deform it, and the female end shell can be pulled out, at which point the connector is in the disassembled state.

[0004] When the elastic part is subjected to pressure, it deforms towards the body and can recover its elasticity on its own. However, due to improper operation, the elastic part may be subjected to an outward force opposite to the pressure direction, causing deformation away from the body. This can affect or even destroy the elasticity of the structure itself. When the outward force is too large, the elastic part may even experience fatigue fracture, damaging the connector structure, making it unable to make a stable connection, and thus affecting the stable flow of current or signals. Utility Model Content

[0005] The purpose of this utility model is to provide a female end plastic shell and connector. The female end plastic shell can prevent the elastic part from losing elasticity or fatigue fracture, ensure the normal insertion and removal function of the female end plastic shell, and thus ensure the stable connection of the connector and the stable flow of current or signal.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] On one hand, this utility model provides a female end plastic shell, including a body and a plug arm. The body is used to install terminals, and the plug arm is used to lock or release the relative position of the female end plastic shell and the male end plastic shell. The plug arm includes a fixedly connected abutment part and an elastic part. The elastic part is connected to the body and can deform so that the abutment part is close to the body. The female end plastic shell also includes a protective structure, which includes a connecting part and a limiting part. One end of the connecting part is fixedly connected to the body, and the other end is connected to the limiting part. The limiting part is spaced apart from the body, and the abutment part is limited between the body and the limiting part, and the abutment part can abut against the limiting part.

[0008] Preferably, the first end of the main body is fixedly connected to the elastic part of the plug-in arm, the connecting part of the protective structure is perpendicular to the main body and fixedly connected to the second end of the main body, and the end of the connecting part away from the main body is bent toward the plug-in arm to form a limiting part. When the elastic part does not undergo elastic deformation, the end of the abutting part of the plug-in arm away from the elastic part abuts against the limiting part.

[0009] Preferably, the female end plastic shell includes two protective structures, both of which are fixedly connected to the second end of the body, and the two protective structures are disposed on opposite sides of the plug-in arm.

[0010] Preferably, the abutting part is provided with a press-to-unlock structure, and there is a clearance space between the two protective structures. When the elastic part does not undergo elastic deformation, the press-to-unlock structure is located in the clearance space, and the top of the press-to-unlock structure is flush with the end of the connecting part away from the main body.

[0011] Preferably, the plug arm is provided with a snap-fit ​​block, which is used to snap-fit ​​with the male end plastic shell.

[0012] Preferably, the body is provided with a terminal mounting groove for mounting terminals, and the terminal mounting groove extends through the body along the insertion direction of the female end plastic shell.

[0013] Preferably, the female end plastic shell also includes a secondary locking structure, which includes a locking cover and a locking structure that are fixedly connected. The side of the body away from the plug arm is provided with an opening that communicates with the terminal mounting groove. The locking cover is rotatably connected to the body so that the locking cover can close or open the opening. When the locking cover closes the opening, the locking structure can press the terminal located between the locking structure and the groove wall of the terminal mounting groove.

[0014] Preferably, the connector arm is a single molded part; and / or, the body and the protective structure are integrally molded.

[0015] Preferably, the connection between the elastic part and the body is arc-shaped, and the central angle of the connection is 180 degrees.

[0016] On the other hand, this utility model provides a connector, which includes a male plastic shell, terminals, and a female plastic shell of any of the above technical solutions, wherein the terminals are inserted into the female plastic shell and the female plastic shell is inserted into the male plastic shell.

[0017] The beneficial effects of this utility model are as follows:

[0018] A female plastic shell and connector are provided. The female plastic shell includes a body, a plug arm, and a protective structure. The plug arm includes a fixedly connected abutment portion and an elastic portion. The elastic portion is connected to the body and can deform to bring the abutment portion closer to the body. The protective structure includes a connecting portion and a limiting portion. One end of the connecting portion is fixedly connected to the body, and the other end is connected to the limiting portion. The limiting portion is spaced apart from the body. By setting the limiting portion, the abutment portion is limited to the body and the limiting portion, and the abutment portion abuts against the limiting portion, thereby limiting the elastic portion from elastically deforming away from the body. During transportation, drops, or rough insertion and removal, the plug arm will not be "bent over" by external force and exceed the yield point, permanently lose elasticity, or even fatigue fracture, ensuring the normal insertion and removal function of the female plastic shell, thereby ensuring the stable connection of the connector and the stable flow of current or signal. Attached Figure Description

[0019] Figure 1 This is a first-view structural schematic diagram of the female end plastic shell provided by this utility model;

[0020] Figure 2 This is a second-view structural diagram of the female end plastic shell provided by this utility model;

[0021] Figure 3 This is a third-view structural diagram of the female end plastic shell provided by this utility model;

[0022] Figure 4 This is a structural schematic diagram of the connector provided by this utility model.

[0023] In the picture:

[0024] 1. Body; 11. Terminal mounting slot; 12. Secondary locking structure; 121. Lock cover; 122. Locking structure; 13. Foolproof structure;

[0025] 2. Insertion arm; 21. Abutment part; 211. Press-to-unlock mechanism; 22. Elastic part; 23. Locking block;

[0026] 3. Protective structure; 31. Connecting part; 32. Limiting part; 33. Clearance space;

[0027] 4. Male end plastic shell; 41. Card slot. Detailed Implementation

[0028] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0029] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" 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. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0030] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0031] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0032] On the one hand, please refer to Figures 1 to 4This utility model provides a female end plastic shell, including a body 1 and a plug arm 2. The body 1 is used to install terminals, and the plug arm 2 is used to lock or release the relative position of the female end plastic shell and the male end plastic shell 4. The plug arm 2 includes a fixedly connected abutment part 21 and an elastic part 22. The elastic part 22 is connected to the body 1 and can deform so that the abutment part 21 is close to the body 1. The female end plastic shell also includes a protective structure 3. The protective structure 3 includes a connecting part 31 and a limiting part 32. One end of the connecting part 31 is fixedly connected to the body 1, and the other end is connected to the limiting part 32. The limiting part 32 is spaced apart from the body 1. The abutment part 21 is limited between the body 1 and the limiting part 32, and the abutment part 21 can abut against the limiting part 32.

[0033] By setting the limiting part 32, the abutting part 21 is limited between the body 1 and the limiting part 32, and the abutting part 21 abuts against the limiting part 32, thereby limiting the elastic part 22 from elastic deformation in the direction away from the body 1. During transportation, dropping or rough insertion and removal, the plug arm 2 will not be "bent over" by external force and exceed the yield point, permanently lose elasticity or even fatigue fracture, thus ensuring the normal insertion and removal function of the female end plastic shell, thereby ensuring the stable connection of the connector and the stable flow of current or signal.

[0034] Specifically, the first end of the main body 1 is fixedly connected to the elastic part 22 of the plug-in arm 2. The connecting part 31 of the protective structure 3 is perpendicular to the main body 1 and fixedly connected to the second end of the main body 1. The end of the connecting part 31 away from the main body 1 is bent towards the plug-in arm 2 to form a limiting part 32. When the elastic part 22 does not undergo elastic deformation, the end of the abutting part 21 of the plug-in arm 2 away from the elastic part 22 abuts against the limiting part 32. The main body 1, the connecting part 31, and the limiting part 32 are connected in sequence to form a C-shaped limiting space. When the plug-in arm 2 is turned outward, the limiting part 32 acts as a stop, restricting the plug-in arm 2 from turning outward. When it is turned inward, the protective structure 3 completely makes way and does not interfere with the plug-in arm 2. This protects the elastic part 22 of the plug-in arm 2 without hindering normal insertion and removal. Preferably, the connecting part 31 is a connecting post, and the limiting part 32 is a limiting block.

[0035] Furthermore, the female end plastic shell includes two protective structures 3, both of which are fixedly connected to the second end of the main body 1. The two protective structures 3 are disposed on opposite sides of the plug-in arm 2. With this arrangement, the abutment portion 21 is limited on three sides by the limiting portions 32 on the left and right sides. Any outward turning force on the plug-in arm 2 in any direction will be stopped by the limiting portions 32 or the connecting portions 31, preventing the elastic portion 22 of the plug-in arm 2 from failing elastically, and further improving the reliability of the protective structure 3.

[0036] Optionally, a press-to-unlock structure 211 protrudes from the abutment portion 21, and a clearance space 33 exists between the two protective structures 3. When the elastic portion 22 does not undergo elastic deformation, the press-to-unlock structure 211 is located in the clearance space 33, and the top of the press-to-unlock structure 211 is flush with the end of the connecting portion 31 away from the body 1. With this configuration, when the female and male ends are assembled and unlocking is required, the operator only needs to apply downward pressure to the press-to-unlock structure 211 to move the plug arm 2 towards the body 1, thereby unlocking the female end housing and the male end housing, facilitating the operator's insertion and removal of the connector. At the same time, the fact that the top of the press-to-unlock structure 211 is flush with the end of the connecting portion 31 away from the body 1 allows for a compact structure of the female end, facilitating connector arrangement. Specifically, the press-to-unlock structure 211 is an operating protrusion.

[0037] Optionally, the connector arm 2 is provided with a snap-fit ​​block 23, which is used to snap-fit ​​with the male end plastic shell 4. For details, please refer to... Figure 4 The male end plastic shell 4 is provided with a slot 41. When the connector is in the assembly state, the snap-fit ​​block 23 on the female end plastic shell snaps into the slot 41 provided on the male end plastic shell 4.

[0038] Alternatively, please refer to Figure 2 The main body 1 is provided with a terminal mounting groove 11, which is used to mount terminals. The terminal mounting groove 11 extends through the main body 1 along the insertion direction of the female end plastic shell. Specifically, the inner wall of the terminal mounting groove 11 is provided with a resilient locking tongue or a backstop hook. After the terminal is inserted, the locking tongue springs up to form a primary lock.

[0039] Furthermore, the female end plastic shell also includes a secondary locking structure 12. The secondary locking structure 12 includes a locking cover 121 and a locking structure 122 fixedly connected. The side of the body 1 away from the plug arm 2 is provided with an opening, which communicates with the terminal mounting groove 11. The locking cover 121 is rotatably connected to the body 1, so that the locking cover 121 closes or opens the opening. When the locking cover 121 closes the opening, the locking structure 122 can press the terminal located between the locking structure 122 and the groove wall of the terminal mounting groove 11. Specifically, the locking structure 122 is a rib or a wedge-shaped block. With this configuration, the locking cover 121 flips downward, causing the locking structure 122 to extend into the opening, thereby abutting the tail of the terminal, so that the terminal is clamped between the locking structure 122 and the groove wall of the terminal mounting groove 11. The secondary locking structure 12 cooperates with the primary locking structure in the terminal mounting groove 11, providing double insurance for the secure insertion of the terminal into the terminal mounting groove 11, preventing the terminal from loosening and improving the reliability of the female end plastic shell.

[0040] Optionally, the plug arm 2 is a one-piece molded part; with this configuration, the elastic part 22, the abutting part 21, and the press-to-unlock structure 211 are formed in one piece in the same stamping mold or injection mold, without welding points, rivets, or screws, which improves the fatigue life of the plug arm 2.

[0041] Optionally, the body 1 and the protective structure 3 are integrally molded. There are no assembly gaps between the protective structure 3 and the body 1, resulting in higher strength and improved reliability of the protective structure 3.

[0042] Furthermore, the connection between the elastic part 22 and the body 1 is arc-shaped, with a central angle of 180 degrees. This configuration creates a semi-circular structure at the connection between the elastic part 22 and the body 1, allowing the bending moment to be continuously distributed along the arc, resulting in a low stress concentration factor and significantly improved fatigue life. At the same time, the "neutral axis" of the arc is located at the center, ensuring symmetrical fiber strain on both sides of the insertion arm 2 when it is under tension or compression, resulting in good springback linearity and a more stable insertion / extraction force curve.

[0043] Further, please refer to Figure 2 The main body 1 has foolproof structures 13 extending along its length on both sides. Generally, the female plastic shell needs to be plugged into and matched with the male plastic shell 4 of the same model. By setting the foolproof structure 13, the cross-sectional shape of the female plastic shell is matched only with the corresponding male plastic shell 4's socket shape, thus avoiding damage to the connector caused by incorrect matching between the female and male ends.

[0044] On the other hand, please refer to Figure 4 An embodiment of this utility model provides a connector, which includes a male plastic shell 4, a terminal and the aforementioned female plastic shell, with the terminal passing through the female plastic shell and the female plastic shell being inserted into the male plastic shell 4.

[0045] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A female plastic shell, comprising a body (1) and a connector arm (2), wherein the body (1) is used to mount a terminal, and the connector arm (2) is used to lock or release the relative position of the female plastic shell and the male plastic shell (4), the connector arm (2) comprising a fixedly connected abutment portion (21) and an elastic portion (22), the elastic portion (22) being connected to the body (1), and the elastic portion (22) being deformable to bring the abutment portion (21) closer to the body (1), characterized in that, The female end plastic shell also includes a protective structure (3), which includes a connecting part (31) and a limiting part (32). One end of the connecting part (31) is fixedly connected to the body (1), and the other end is connected to the limiting part (32). The limiting part (32) is spaced apart from the body (1). The abutting part (21) is located between the body (1) and the limiting part (32), and the abutting part (21) can abut against the limiting part (32).

2. The female end plastic shell according to claim 1, characterized in that, The first end of the body (1) is fixedly connected to the elastic part (22) of the plug arm (2). The connecting part (31) of the protective structure (3) is perpendicular to the body (1) and fixedly connected to the second end of the body (1). The end of the connecting part (31) away from the body (1) is bent toward the plug arm (2) to form the limiting part (32). When the elastic part (22) does not undergo elastic deformation, the end of the abutting part (21) of the plug arm (2) away from the elastic part (22) abuts against the limiting part (32).

3. The female end plastic shell according to claim 2, characterized in that, The female end plastic shell includes two protective structures (3), both of which are fixedly connected to the second end of the body (1) and are disposed on opposite sides of the plug arm (2).

4. The female end plastic shell according to claim 3, characterized in that, The abutting part (21) is provided with a press-to-unlock structure (211), and there is a clearance space (33) between the two protective structures (3). When the elastic part (22) does not undergo elastic deformation, the press-to-unlock structure (211) is located in the clearance space (33), and the top of the press-to-unlock structure (211) is flush with the end of the connecting part (31) away from the body (1).

5. The female end plastic shell according to claim 1, characterized in that, The plug arm (2) is provided with a snap-fit ​​block (23), which is used to snap-fit ​​with the male end plastic shell (4).

6. The female end plastic shell according to claim 1, characterized in that, The main body (1) is provided with a terminal mounting groove (11), which is used to fit a terminal. The terminal mounting groove (11) passes through the main body (1) along the insertion direction of the female end plastic shell.

7. The female end plastic shell according to claim 6, characterized in that, The female end plastic shell also includes a secondary locking structure (12), which includes a locking cover (121) and a locking structure (122) fixedly connected. The body (1) has an opening on the side away from the plug arm (2), which communicates with the terminal mounting groove (11). The locking cover (121) is rotatably connected to the body (1) so that the locking cover (121) can close or open the opening. When the locking cover (121) closes the opening, the locking structure (122) can press the terminal located between the locking structure (122) and the groove wall of the terminal mounting groove (11).

8. The female end plastic shell according to claim 1, characterized in that, The plug arm (2) is an integrally molded part; and / or, the body (1) and the protective structure (3) are integrally molded.

9. The female end plastic shell according to claim 1, characterized in that, The connection between the elastic part (22) and the body (1) is arc-shaped, and the central angle of the connection is 180 degrees.

10. A connector, characterized in that, The connector includes a male plastic shell (4), terminals, and a female plastic shell as described in any one of claims 1-9, wherein the terminals are disposed in the female plastic shell and the female plastic shell is inserted into the male plastic shell (4).

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