Connector with secondary locking structure

Abstract

The utility model discloses a connector with a secondary locking structure, which is characterized in that a female end base and a male end base are connected in an inserting manner, the top of the female end base is provided with an inserting hole, two side walls of the inserting hole are provided with a pre-locking hole and a locking hole, a spring bolt is also arranged in the inserting hole, the rear end of the spring bolt is tilted, the spring bolt is provided with an accommodating groove, and the accommodating groove is provided with a locking hole. The front end face of the containing groove is a limiting end face, a locking piece is installed in the inserting hole and comprises a limiting plate located in the middle, cantilever elastic buckles extending forwards are arranged on the two sides of the front end face of the limiting plate, locking blocks are arranged on the outer sides of the front ends of the cantilever elastic buckles, and elastic pieces extending forwards are further arranged on the front end face of the limiting plate. The elastic piece is located between the two cantilever elastic buckles, and the top of the male end base is provided with a protruding block. The connector has the beneficial effects that the connector can be locked through secondary locking by switching the locking piece between the pre-locking hole and the locking hole, so that the locking reliability of the connector is ensured.

Description

Technical Field

[0001] The utility model relates to locking of a male end and a female end of a connector, in particular to a connector with a secondary locking structure. Background Art

[0002] The locking structure usually acts on the connector connection to fix the male base and the female base of the connector together, thereby improving the stability of the connector in special environments.

[0003] Generally, the lock structure commonly used in existing connectors can only be unlocked once, which is prone to mis-locking and poses a great risk of use.

[0004] After long-term research, the inventor designed a locking structure with a secondary locking function. Utility Model Content

[0005] The purpose of the utility model is to overcome the shortcomings of the prior art and provide a connector with a secondary locking structure.

[0006] The purpose of the utility model is achieved through the following technical solutions: a connector with a secondary locking structure, comprising a female end base and a male end base, the female end base and the male end base are plug-connected, a protrusion is arranged on the top of the female end base, a plug hole is axially opened on the protrusion, a pre-locking hole and a locking hole are opened on both side walls of the plug hole, the locking hole is located between the pre-locking hole and the male end base, a locking tongue is also installed in the plug hole, the rear end of the locking tongue is tilted, and the two outer side walls of the middle part of the locking tongue are connected to the inner side walls of the corresponding plug hole through connecting ribs, a receiving groove is opened on the locking tongue, and the front end surface of the receiving groove is a limit end A locking piece is installed in the socket, and the locking piece includes a limiting plate located in the middle, and cantilever elastic buckles extending forward are arranged on both sides of the front end surface of the limiting plate, and a locking block is arranged on the outer side of the front end of the cantilever elastic buckle, and a spring piece extending forward is also arranged on the front end surface of the limiting plate, and the spring piece is located between the two cantilever elastic buckles. When it is in the pre-locking position, the locking block is located in the corresponding pre-locking hole, and the spring piece is located in the accommodating groove; a protrusion is arranged on the top of the male end base, and when it is in the locking position, the locking block is located in the corresponding locking hole, and the front end of the spring piece is pressed on the front end part of the lock tongue, and the protrusion is located at the front end of the accommodating groove.

[0007] Optionally, downwardly bent cantilever beams are provided on both sides of the rear end of the limiting plate, the rear ends of the two cantilever beams are connected by a pad, the pad is attached to the female end base, and a through hole is formed between the two cantilever beams, the pad and the limiting plate, through which the rear end of the lock tongue passes.

[0008] Optionally, a wedge-shaped surface is provided on the side wall of the protrusion close to the female end base.

[0009] Optionally, the front end surface of the locking block is provided with a bevel.

[0010] Optionally, the connecting rib is arranged at the raised portion of the locking tongue.

[0011] Optionally, a reinforcing rib is provided on the back side of the spring piece.

[0012] The utility model has the following advantages:

[0013] 1. The connector of the utility model can be locked by secondary locking through the conversion of the locking member between the pre-locking hole and the locking hole. After locking, the locking member has a limiting effect on the locking tongue, thereby preventing the protrusion from being separated from the receiving groove due to the downward pressure of the locking tongue, thereby ensuring the reliability of the locking of the connector;

[0014] 2. The locking member is provided with a spring sheet. In the pre-locking position, the limiting end face can resist the spring sheet, so that the locking member cannot be moved to the locking position even if an external force is applied to the locking member. After the female end base and the male end base are plugged into place, the protrusion causes the spring sheet to withdraw from the accommodating groove, and then a thrust is applied to the locking member so that the locking member can reach the locking position, thereby making the connector anti-misunderstanding function. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the utility model;

[0016] Figure 2 It is a schematic diagram of the structure after the top cover of the jack is removed from the female end base;

[0017] Figure 3 The structure of the locking part is shown in FIG. Figure 1 ;

[0018] Figure 4 The structure of the locking part is shown in FIG. Figure 2 ;

[0019] Figure 5 It is a schematic diagram of the installation position of the locking member in the pre-locking position;

[0020] Figure 6 It is a structural schematic diagram of the connector in the locking position;

[0021] In the figure, 10-female end base, 20-male end base, 30-locking piece, 11-pre-locking hole, 12-locking hole, 13-jack, 14-locking tongue, 15-connecting rib, 16-accommodating hole, 17-limiting end face, 21-bump, 22-wedge surface, 31-limiting plate, 32-cantilever elastic buckle, 33-locking block, 34-spring, 35-pad, 36-cantilever beam, 37-through hole, 38-reinforcement rib. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical scheme and advantages of the embodiments of the present invention clearer, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. The components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0023] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present invention.

[0024] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features thereof may be combined with each other.

[0025] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0026] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the utility model product is usually placed when in use, or the positions or positional relationships commonly understood by those skilled in the art, which are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0027] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] like Figure 1As shown, a connector with a secondary locking structure includes a female end base 10 and a male end base 20, the female end base 10 and the male end base 20 are plug-connected. In this embodiment, a protrusion is provided on the top of the female end base 10, such as Figure 1 and Figure 2 As shown, an axial insertion hole 13 is opened on the protrusion, and pre-locking holes 11 and locking holes 12 are opened on both side walls of the insertion hole 13. The locking hole 12 is located between the pre-locking hole 11 and the male end base 20. A locking tongue 14 is also installed in the insertion hole 13. The rear end of the locking tongue 14 is tilted, and the two outer side walls of the middle part of the locking tongue 14 are connected to the inner side walls of the corresponding insertion hole 13 through connecting ribs 15. The rear end of the locking tongue 14 is tilted to form a pressing portion. When pressure is applied to the pressing portion, the connecting rib 15 is twisted, and then the front end of the locking tongue 14 is tilted, so that the female end base 10 and the male end base 20 are unlocked.

[0029] In this embodiment, if Figure 2 As shown, the locking tongue 14 is provided with a receiving groove 16, the front end surface of the receiving groove 16 is a limiting end surface 17, and a locking member 30 is installed in the insertion hole 13. Figure 3 and Figure 4 As shown, the locking member 30 includes a limiting plate 31 located in the middle, and cantilever elastic buckles 32 extending forward are arranged on both sides of the front end surface of the limiting plate 31, and a locking block 33 is arranged on the front outer side of the cantilever elastic buckle 32. The front end surface of the limiting plate 31 is also provided with a spring piece 34 extending forward, and the spring piece 34 is located between the two cantilever elastic buckles 32. In this embodiment, a reinforcing rib 38 is arranged on the back of the spring piece 34, thereby ensuring the structural strength of the spring piece 34, thereby ensuring the reliability of the use of the spring piece 34. In this embodiment, in order to avoid locking When the locking member 30 is initially installed, the front end of the locking member 30 is inserted from the rear end of the insertion hole 13, and the locking block 33 contacts the side wall of the insertion hole 13, and then the cantilever elastic buckle 32 is squeezed inwardly, so that the cantilever elastic buckle 32 generates an elastic restoring force. When the locking block 33 moves to the pre-locking hole 11, the locking block 33 of the cantilever elastic buckle 32 enters the pre-locking hole 11 under the action of the elastic restoring force, so that the locking member 30 is in the pre-locking position, such as Figure 5 As shown, at this time, the locking block 33 is located in the corresponding pre-locking hole 11, and the spring piece 34 is located in the receiving groove 16, and the front end face of the receiving groove 16 is the limiting end face 17. If the male end base 20 is not installed, if an axial thrust is applied to the locking member 30 again, at this time, the limiting end face 17 will resist the front end of the spring piece 34, and the locking member 30 can no longer move axially forward, thereby ensuring the stability of the locking member 30 in the pre-locking position.

[0030] In this embodiment, if Figure 1As shown, a protrusion 21 is provided on the top of the male end base 20. During the plugging process of the male end base 20 and the female end base 10, the protrusion 21 pushes the front end of the locking tongue 14 upward, and the protrusion 21 enters the receiving groove 16. At this time, the locking tongue 14 is reset, and the protrusion 21 pushes the front end of the spring piece 34 upward, and the front end of the spring piece 34 is withdrawn from the receiving groove 16, and then an axial thrust is applied to the locking member 30. The locking member 30 can now move axially forward, and the locking block 33 enters the locking hole 12 from the pre-locking hole 11, so that the connector is in the locking position. At this time, the limiting plate 31 abuts against the rear end face of the protrusion to limit the circumferential forward movement of the locking member 30, as shown in FIG. Figure 6 As shown, when the connector is in the locking position, the locking block 33 is located in the corresponding locking hole, the front end of the spring 34 is pressed on the front end of the locking tongue 14 , and the protrusion 21 is located at the front end of the accommodating groove 16 .

[0031] In this embodiment, cantilever beams 36 bent downward are provided on both sides of the rear end of the limiting plate 31, and the rear ends of the two cantilever beams 36 are connected by a pad 35, and the pad 35 is attached to the female end base 10, and the two cantilever beams 36, the pad 35 and the limiting plate 31 form a through hole 37 through which the rear end of the locking tongue 14 passes. When the connector is in the locking position, at this time, since the pad 35 is located below the pressing portion of the locking tongue 14, the pad 35 can be prevented from being pressed down to the bottom. That is to say, even if the pressing portion is pressed down, the front end of the locking tongue 14 will not be lifted too much, thereby making the convex The block 21 cannot axially withdraw from the receiving groove 16, thereby ensuring the reliability of the connector locking. When the connector is unlocked, a special tool is used to push the locking block 33 from the locking hole 12, and an axial backward pulling force is applied to the locking member 30, and the locking block 33 enters the pre-locking hole 11. At this time, the pad 35 is located on the rear side of the pressing portion. At this time, downward pressure is applied to the pressing portion, and the front end of the locking tongue 14 is tilted upward, thereby causing the protrusion 21 to disengage from the receiving groove 16, and then an axial pulling force is applied to the male end base 20, thereby separating the male end base 20 from the female end base 10.

[0032] In this embodiment, a wedge-shaped surface 22 is provided on the side wall of the protrusion 21 close to the female end base 10 , so as to facilitate the protrusion 21 to press the front end of the locking tongue 14 , thereby facilitating the protrusion 21 to enter the receiving groove 16 .

[0033] In this embodiment, the front end surface of the locking block 33 is provided with an inclined surface, thereby facilitating the insertion of the locking block 33 into the insertion hole 13 and facilitating the movement of the locking block 33 from the pre-locking position to the locking position.

[0034] In this embodiment, the connecting rib 15 is disposed at the raised portion of the locking tongue 14 , thereby ensuring that after downward pressure is applied to the pressing portion, the front end of the locking tongue 14 can be raised to a sufficient height, thereby ensuring that the protrusion 21 can exit the receiving groove 16 .

[0035] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A connector with a secondary locking structure, comprising a female end base and a male end base, wherein the female end base and the male end base are plug-connected, characterized in that: The top of the female end base is provided with a protrusion, and a socket is axially opened on the protrusion. Pre-locking holes and locking holes are opened on both side walls of the socket, and the locking hole is located between the pre-locking hole and the male end base. A locking tongue is also installed in the socket, and the rear end of the locking tongue is tilted, and the two outer side walls of the middle part of the locking tongue are connected with the corresponding inner side walls of the socket through connecting ribs. A receiving groove is opened on the locking tongue, and the front end face of the receiving groove is a limiting end face. A locking piece is installed in the socket, and the locking piece includes a limiting plate located in the middle, and the limiting Cantilever elastic buckles extending forward are arranged on both sides of the front end surface of the plate, and locking blocks are arranged on the outer sides of the front ends of the cantilever elastic buckles. The front end surface of the limiting plate is also provided with a spring sheet extending forward, and the spring sheet is located between the two cantilever elastic buckles. When in the pre-locking position, the locking block is located in the corresponding pre-locking hole, and the spring sheet is located in the accommodating groove; a protrusion is arranged on the top of the male end base, and when in the locking position, the locking block is located in the corresponding locking hole, and the front end of the spring sheet is pressed on the front end portion of the lock tongue, and the protrusion is located at the front end of the accommodating groove.

2. A connector with a secondary locking structure according to claim 1, characterized in that: Downward-bending cantilever beams are arranged on both sides of the rear end of the limiting plate, and the rear ends of the two cantilever beams are connected by a pad, which is attached to the female end base, and a through hole is formed between the two cantilever beams, the pad and the limiting plate, through which the rear end of the locking tongue passes.

3. The connector with a secondary locking structure according to claim 1, characterized in that: A wedge-shaped surface is arranged on the side wall of the protrusion close to the female end base.

4. The connector with a secondary locking structure according to claim 1, characterized in that: The front end surface of the locking block is provided with an inclined surface.

5. The connector with a secondary locking structure according to claim 1, characterized in that: The connecting rib is arranged at the raised part of the locking tongue.

6. The connector with a secondary locking structure according to claim 1, characterized in that: The back side of the spring piece is provided with reinforcing ribs.

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