Change-over connector with mistake-proof structure

Abstract

The utility model relates to the field of mechanical connection devices, in particular to a change-over head with a mistake-proof structure, and aims to solve the problem that a user uses a change-over head of a certain model under the condition of random cooperation, so that the phenomenon of overlarge current of a small plug is caused, the change-over head comprises a shell, and a mistake-proof module is arranged in an inner cavity of the shell; the mistake proofing module comprises an identification rod, a switching-on rod and a linkage assembly, and the identification rod and the switching-on rod can penetrate through the shell; the identification rod and the switch-on rod are both connected with the linkage assembly. After the identification rod makes contact with the plug, the switch-on rod is controlled to make contact with a contact of the plug through the linkage assembly. The application has the effect of guaranteeing the use pairing of the adapter and the plug.

Description

Technical Field

[0001] This application relates to the field of mechanical connection devices, and in particular to a replacement connector with a fault-prevention structure. Background Technology

[0002] Connection adapters are widely used in various electrical devices to connect and convert between interfaces of different specifications. With the increasing variety of electrical equipment and the diversification of application scenarios, the demand for connection adapters is also constantly increasing.

[0003] However, existing adapter designs still have significant shortcomings in preventing users from arbitrarily mixing and matching plugs. Especially when multiple plug types are used interchangeably, users can easily use incompatible plugs due to negligence or lack of understanding, causing excessive current to flow through the smaller plug, potentially leading to equipment damage or fires. Therefore, effectively preventing such misoperation and ensuring proper matching of plugs and adapters has become an urgent technical problem to be solved. Utility Model Content

[0004] To ensure the compatibility of the adapter and plug, this application provides an adapter with a mis-proof structure.

[0005] The technical solution for a changeover connector with a fault-prevention structure provided in this application is as follows:

[0006] A connector with a fault-proof structure includes a housing, and a fault-proof module is disposed inside the cavity of the housing. The fault-proof module includes an identification rod, a connection rod, and a linkage component. Both the identification rod and the connection rod can penetrate the housing. Both the identification rod and the connection rod are connected to the linkage component. After the identification rod contacts the plug, the linkage component controls the connection rod to contact the plug's contacts.

[0007] By adopting the above technical solution, when the identification rod contacts a specific plug, the linkage component makes the contact point of the connecting rod contact the plug, ensuring that only the correctly matched plug can trigger the current conversion function and work normally. This effectively prevents the overload of small plugs caused by incorrect matching and ensures the safe use and pairing of the adapter and plug.

[0008] Preferably, the linkage assembly includes a linkage rod and a reset component. The linkage rod is rotatably connected in the inner cavity of the housing. The identification rod and the connection rod are respectively connected to the two ends of the linkage rod. The reset component is connected to the linkage rod so that the identification rod and the connection rod are reset to their initial state under the action of the linkage rod.

[0009] By adopting the above technical solution, precise matching between the adapter and the plug is achieved, ensuring that the current conversion function is triggered only when a plug with a specific structure is inserted. Specifically, the linkage rod and reset component in the linkage assembly work together so that after the identification rod contacts the plug, the linkage rod drives the connection rod to contact the plug's contacts, thereby establishing circuit connection. Simultaneously, the reset component ensures that the identification rod and connection rod quickly return to their initial state after the plug is removed, guaranteeing the reliability and safety of the device.

[0010] Preferably, the identification rod and the connection rod are fixedly connected to both ends of the linkage rod, and the outer shell has through holes that fit the identification rod and the connection rod with a clearance.

[0011] By adopting the above technical solution, the identification rod and the connection rod are fixedly connected to both ends of the linkage rod, so that when the plug is inserted, the identification rod, under force, can drive the connection rod to move through the linkage rod, realizing the contact or separation. Through holes on the housing that fit the gap between the identification rod and the connection rod ensure that the identification rod and the connection rod will not shift during movement, guaranteeing the accuracy and reliability of the contact. This design effectively avoids the problem of excessive current in small plugs due to incorrect plug insertion, improving the safety and stability of use.

[0012] Preferably, the end of the identification rod away from the linkage rod is provided with an abutting slope, which can contact the end face of the plug.

[0013] By adopting the above technical solution, when the plug is inserted, the abutting bevel can smoothly contact the plug end face, reducing friction during insertion and ensuring that the identification rod smoothly pushes the linkage component, thereby achieving precise control of the connection rod. This design not only improves the compatibility and stability between the plug and the adapter, but also effectively avoids overcurrent in small plugs caused by misinsertion.

[0014] Preferably, the abutting inclined surface has a protective arc angle on the side near the connecting rod.

[0015] By adopting the above technical solution, when the plug is inserted, the abutting bevel on the identification rod contacts the end face of the plug, guiding the identification rod downwards. Simultaneously, the linkage component drives the connecting rod to contact the plug's contacts, thus connecting the circuit. Specifically, a protective arc angle is provided on the side of the abutting bevel near the connecting rod, effectively preventing damage to the identification rod during plug insertion and ensuring its normal operation, thereby improving the reliability and service life of the connector. Preferably, the identification rod and the connecting rod are always located within the through hole. By adopting the above technical solution, the identification rod and the connecting rod are always located within the through hole, effectively preventing external debris from entering the housing and affecting the normal operation of the identification and connection functions, thus ensuring the stability and reliability of the error-proof structure. This design also improves the overall aesthetics and compactness of the connector. Preferably, the identification rod and the connecting rod are rotatably connected to both ends of the linkage rod, and the housing has through holes adapted to the identification rod and the connecting rod. By adopting the above technical solution, it is ensured that the identification rod and the connecting rod can respond accurately when the plug is inserted, avoiding malfunctions or failures caused by mechanical jamming. When the plug is correctly inserted, the identification rod is activated, which in turn drives the connecting rod to contact the plug's contacts, thus establishing circuit connection. Simultaneously, the through-hole in the housing ensures smooth movement of the identification rod and connecting rod, improving the device's reliability and stability. Preferably, the reset element is a spring, with one end connected to the inner wall of the housing and the other end connected to and able to abut against the connecting rod. By employing the above technical solution, using a spring as a reset element, when the plug is inserted, the identification rod is pushed, causing the connecting rod to contact the plug's contacts via the linkage assembly, thus establishing circuit connection. When the plug is removed, the spring quickly resets, restoring the identification rod and connecting rod to their initial state, ensuring accurate identification and connection the next time the plug is inserted. The use of a spring not only improves the device's response speed but also ensures its reliability and stability, effectively preventing overload of the small plug due to misoperation.

[0016] In summary, this application includes at least one of the following beneficial technical effects:

[0017] 1. By utilizing the linkage mechanism of the identification rod and the connection rod, the circuit is ensured to be connected only when the plug and the adapter are correctly matched, effectively preventing overcurrent caused by users using incompatible plugs, thus improving the safety and reliability of use.

[0018] 2. The linkage components and reset components in the error prevention module work together to ensure that the identification rod and the connection rod can be quickly reset to their initial state after the plug is unplugged, thus ensuring the consistency and stability of multiple plugging and unplugging operations. Attached Figure Description

[0019] Figure 1This is a schematic diagram of a replacement connector with a fault-prevention structure according to embodiment 1 of this application.

[0020] Figure 2 This is a structural diagram illustrating the specific structure of the error prevention module in Implementation Scheme 1 of this application.

[0021] Figure 3 yes Figure 1 A magnified view of A in the middle.

[0022] Figure 4 The structural diagram in Implementation Scheme 2 of this application is used to illustrate the specific structure of the error prevention module.

[0023] Explanation of reference numerals in the attached drawings: 1. Outer shell; 11. Through hole; 2. Error prevention module; 21. Identification rod; 211. Abutting slope; 212. Protective arc angle; 22. Connecting rod; 23. Linkage component; 231. Linkage rod; 232. Reset component; 2321. Spring; 3. Plug. Detailed Implementation

[0024] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail.

[0025] This application discloses a replacement connector with a fault-prevention structure.

[0026] Example 1

[0027] Reference Figure 1 and Figure 2 The adapter with a fault-proof structure includes a housing 1, and a fault-proof module 2 is provided inside the cavity of the housing 1. The fault-proof module 2 includes an identification rod 21, a connecting rod 22, and a linkage component 23. Both the identification rod 21 and the connecting rod 22 can penetrate the housing 1. Both the identification rod 21 and the connecting rod 22 are connected to the linkage component 23. After the identification rod 21 contacts the plug 3, the linkage component 23 controls the connecting rod 22 to contact the contact point of the plug 3, which effectively prevents the user from arbitrarily using the plug 3 and ensures that the plug 3 and the adapter are correctly matched.

[0028] When the identification rod 21 contacts a specific plug 3, the linkage component 23 makes the connecting rod 22 contact the contact point of the plug 3, ensuring that only the correctly matched plug 3 can trigger the current conversion function and work normally. This effectively prevents the overload of the small plug 3 caused by incorrect matching and ensures the safe use and pairing of the adapter and the plug 3.

[0029] Reference Figure 2 and Figure 3The linkage component 23 includes a linkage rod 231 and a reset component 232. The linkage rod 231 is rotatably connected to the inner cavity of the outer shell 1 via a shaft. A straight rod is preset inside the inner cavity of the outer shell 1, and the shaft is fixed on the shaft. Specifically, there is a clearance fit between the linkage rod 231 and the shaft, with a gap of 5mm.

[0030] The identification rod 21 and the connecting rod 22 are fixedly connected to both ends of the linkage rod 231 along its length by welding or integral molding, respectively; the outer shell 1 is provided with through holes 11 that are clearance-fitted to the identification rod 21 and the connecting rod 22; the identification rod 21 and the connecting rod 22 can pass through the through holes 11. In this embodiment, the identification rod 21 and the connecting rod 22 each correspond to one through hole 11.

[0031] The end of the identification rod 21 furthest from the linkage rod 231 is provided with an abutment bevel 211. The abutment bevel 211 forms an acute angle with the virtual extension line of the linkage rod 231, allowing it to contact the end face of the plug 3. A protective arc angle 212 is provided on the side of the abutment bevel 211 closest to the connecting rod 22, which reduces wear during plug 3 insertion and extends its service life. The identification rod 21 and the connecting rod 22 are always located within the through hole 11, preventing external dust and foreign objects from entering and ensuring the normal operation of internal components.

[0032] The reset element 232 is connected to the linkage rod 231 so that the identification rod 21 and the connection rod 22 are reset to their initial state under the action of the linkage rod 231. The reset element 232 is a spring 2321. One end of the spring 2321 is connected to the inner wall of the outer casing 1, and the other end of the spring 2321 is connected to the linkage rod 231 and can abut against the linkage rod 231 to ensure that the identification rod 21 and the connection rod 22 remain in their initial positions when no external force is applied.

[0033] Using spring 2321 as a reset element 232, when plug 3 is inserted, the identification rod 21 is pushed, which drives the connecting rod 22 to contact the contacts of plug 3 through the linkage component 23, thus connecting the circuit. When plug 3 is pulled out, spring 2321 can quickly reset, so that the identification rod 21 and the connecting rod 22 return to their initial state, ensuring accurate identification and connection when plug 3 is inserted again.

[0034] The implementation principle of a connector with a fault-prevention structure in Embodiment 1 of this application is as follows: When the user inserts the customized plug 3 into the connector, the boss structure of the plug 3 will first contact the abutment slope 211 of the identification rod 21, pushing the identification rod 21 to move inward. The movement of the identification rod 21 will be transmitted to the connecting rod 22 through the linkage rod 231, so that the connecting rod 22 contacts the contact of the plug 3, forming a current path. If the plug 3 is not a customized plug 3, the identification rod 21 cannot be activated, and the connecting rod 22 will not contact the contact of the plug 3, thereby preventing current conduction. In addition, when the plug 3 is pulled out, the reset component 232 will automatically reset the identification rod 21 and the connecting rod 22 to their initial positions, ready for the next insertion and removal operation. This design effectively prevents users from arbitrarily using the plug 3, ensures the correct matching of the plug 3 and the connector, and greatly improves the safety and reliability of use.

[0035] Example 2

[0036] The difference between this embodiment and the above embodiments is that: (Refer to...) Figure 4 The identification rod 21 and the connecting rod 22 are rotatably connected to both ends of the linkage rod 231 via shafts. The linkage rod 231 has a pre-set oblong hole for the shaft to move. To guide the movement of the identification rod 21 and the connecting rod 22, the outer casing 1 has a through hole 11 adapted to the identification rod 21 and the connecting rod 22. The identification rod 21 and the connecting rod 22 are always inserted into the through hole 11. Guided by the side wall of the through hole 11, the identification rod 21 and the connecting rod 22 can accurately rise and fall to the corresponding positions.

[0037] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A connector with a fault-prevention structure, characterized in that: The device includes a housing (1), and an error prevention module (2) is provided inside the cavity of the housing (1). The error prevention module (2) includes an identification rod (21), a connecting rod (22), and a linkage component (23). Both the identification rod (21) and the connecting rod (22) can penetrate the housing (1). Both the identification rod (21) and the connecting rod (22) are connected to the linkage component (23). After the identification rod (21) contacts the plug (3), the linkage component (23) controls the contact point of the connecting rod (22) to contact the plug (3).

2. A connector with a fault-prevention structure according to claim 1, characterized in that: The linkage assembly (23) includes a linkage rod (231) and a reset member (232). The linkage rod (231) is rotatably connected in the inner cavity of the outer shell (1). The identification rod (21) and the connecting rod (22) are respectively connected to the two ends of the linkage rod (231). The reset member (232) is connected to the linkage rod (231) so that the identification rod (21) and the connecting rod (22) are reset to their initial state under the action of the linkage rod (231).

3. A connector with a fault-prevention structure according to claim 2, characterized in that: The identification rod (21) and the connecting rod (22) are fixedly connected to the two ends of the linkage rod (231), and the outer shell (1) is provided with a through hole (11) that is clearance-fitted with the identification rod (21) and the connecting rod (22).

4. A connector with a fault-prevention structure according to claim 3, characterized in that: The end of the identification rod (21) away from the linkage rod (231) is provided with an abutting slope (211), which can contact the end face of the plug (3).

5. A connector with a fault-prevention structure according to claim 4, characterized in that: The abutting inclined surface (211) is provided with a protective arc angle (212) on the side near the connecting rod (22).

6. A connector with a fault-prevention structure according to claim 4, characterized in that: The identification rod (21) and the connection rod (22) are always located inside the through hole (11).

7. A connector with a fault-prevention structure according to claim 2, characterized in that: The identification rod (21) and the connecting rod (22) are rotatably connected to the two ends of the linkage rod (231), and the outer shell (1) is provided with through holes (11) that are adapted to the identification rod (21) and the connecting rod (22).

8. A connector with a fault-prevention structure according to claim 2 or 7, characterized in that: The reset component (232) is a spring (2321). One end of the spring (2321) is connected to the inner wall of the outer shell (1), and the other end of the spring (2321) is connected to the linkage rod (231) and can abut against the linkage rod (231).

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