Wire harness connector with terminal anti-drop structure
By setting a double anti-disengagement structure on the terminals of the wire harness connector, and using the snap-fit design of the return spring and the limit block, combined with the screw sleeve, the problem of loosening of the wire harness connector under complex working conditions is solved, realizing the stability and reliability of the connection, and avoiding poor contact and safety hazards.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHONGSHAN JINFENGSHENG ELECTRONICS CO LTD
- Filing Date
- 2025-05-28
- Publication Date
- 2026-05-12
AI Technical Summary
Under complex operating conditions such as high-frequency vibration, severe impact, or long-term high temperature, the terminals of existing wire harness connectors are prone to poor contact or even falling off due to factors such as vibration loosening, external force pulling, or thermal expansion and contraction. Existing locking mechanisms are mostly single anti-disengagement structures, which are prone to loosening or falling off after long-term use, resulting in circuit interruption, signal loss, and safety hazards.
The terminal adopts a dual anti-detachment structure, including a return spring and a limit block design. The spring force of the return spring drives the limit block to engage, and combined with the threaded engagement of the screw, it ensures the fixation of the connection terminal and the connection seat, forming a double protection to prevent loosening, and providing backup protection when the single anti-detachment structure fails.
Effectively prevents terminals from coming loose, ensures the continuity of circuit or signal transmission, reduces poor contact, improves connection reliability, reduces the risk caused by detachment, and ensures that the connector is always in the correct position.
Smart Images
Figure CN224233059U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of connector anti-detachment technology, and in particular to a wire harness connector with a terminal anti-detachment structure. Background Technology
[0002] Wire harness connectors, as key components in electrical systems for circuit connections and signal transmission, are widely used in automotive manufacturing, aerospace, industrial automation, and consumer electronics. They ensure stable power and data transmission between devices through reliable electrical connections, playing a crucial role in the normal operation of the system. In practical applications, wire harness connectors typically include the following core components:
[0003] 1. The connecting terminal is the core component of the wire harness connector, responsible for making electrical connections with the wires. Its material is generally a copper alloy with good conductivity, and it is surface treated to enhance its anti-oxidation and anti-corrosion properties.
[0004] 2. The outer shell serves to protect the internal terminals and provide insulation, while also providing mechanical support for the installation and fixation of the connector. It is usually made of high-strength, flame-retardant engineering plastics.
[0005] 3. Sealing components are used to prevent the intrusion of external contaminants such as water, dust, and oil, ensuring the electrical performance of the connector in harsh environments. Common sealing materials include rubber and silicone.
[0006] 4. Locking mechanisms are used to ensure the stability of the connector in the connected state and prevent accidental detachment. Common forms include snap-fit and locking plates.
[0007] Currently, to ensure reliable connections for wire harness connectors, manufacturers employ various structural designs and technical methods. Some manufacturers optimize the insertion and extraction force design of the terminals, ensuring a tight connection while facilitating operation during insertion and extraction. Others add anti-misinsertion structures to the housing to prevent connection failures caused by incorrect insertion. Still others utilize multi-layer sealing designs on sealing components to enhance waterproof and dustproof performance.
[0008] However, the above implementation still has the following problems. In terms of terminal connection stability, existing connectors lack effective limiting. When the equipment is under complex working conditions such as high-frequency vibration, severe impact, or long-term high temperature, the terminals may become loose due to vibration, external force pulling, or thermal expansion and contraction, resulting in poor contact or even falling off. The existing locking mechanism is mostly a single anti-detachment structure that relies on ordinary buckles for fixation. After long-term use, the connector terminals are prone to loosening or even falling off. Terminal falling off can not only cause circuit interruption and signal loss, leading to equipment shutdown and functional failure, but in severe cases, it may also generate electric sparks due to poor contact, causing safety hazards such as fire. A solution is proposed: by setting a double anti-detachment structure on the wire harness connector, the poor contact caused by falling off can be reduced, ensuring that the connector is always in the correct position, effectively improving connection reliability and reducing various risks caused by terminal falling off. Utility Model Content
[0009] To address the shortcomings of existing technologies, this utility model provides a wire harness connector with a terminal anti-detachment structure, which solves the problem that existing connectors lack effective limiting. When the equipment is under complex working conditions such as high-frequency vibration, severe impact, or long-term high temperature, the terminals may become loose due to vibration, external force pulling, or thermal expansion and contraction, resulting in poor contact or even detachment. Existing locking mechanisms are mostly single anti-detachment structures that rely solely on ordinary buckles for fixation. After long-term use, the connector terminals are prone to loosening or even detachment.
[0010] To achieve the above objectives, this utility model provides the following technical solution:
[0011] A wire harness connector with a terminal anti-detachment structure includes a connecting terminal and a connecting base. A connecting plate is fixedly connected to the upper surface of the connecting terminal. Connecting blocks are fixedly connected to both the front and rear sides of the connecting terminal and the connecting base. Two screws are provided in each pair of connecting blocks. A fixing block is fixedly connected to the upper surface of the connecting base. A limit block is movably engaged in the fixing block. A return spring is fixedly connected to the front surface of the limit block. A slot is formed on the surface of the connecting plate, and the slot is movably engaged with the limit block.
[0012] Preferably, a limiting groove is formed on the left surface of the fixing block, the limiting groove is movably engaged with the connecting plate, and a rectangular groove is formed on the inner wall of the limiting groove, the rectangular groove is movably engaged with the limiting block.
[0013] Preferably, the rectangular groove is fixedly connected to the reset spring, and a push block is fixedly connected to the upper surface of the limiting block.
[0014] Compared with the prior art, the present invention has the following beneficial effects:
[0015] 1. The limit block is reset by the elastic force of the reset spring. At this time, the limit block will engage with the slot opened on the surface of the connecting plate. The two are in a limited and fixed state. The connecting terminal and the connecting seat are also in a fixed state. The limit can prevent the terminal from coming loose from the connector due to external force, ensuring the continuity of circuit or signal transmission. The limit can also ensure that the terminal and the connector contact are tightly fitted, reducing problems such as increased contact resistance and heat generation caused by loosening.
[0016] 2. After the connection is completed, rotate the screw to thread it onto the two connecting blocks fixed on the connecting terminal and the connecting seat. As the screw is threaded, the connection between the connecting terminal and the connecting seat becomes tighter. If the single anti-detachment structure fails due to aging, vibration or external force, the double structure can serve as a backup protection. The double anti-detachment structure can reduce poor contact caused by detachment and ensure that the connector is always in the correct position, avoiding exposed cables or accidental contact of metal contacts. Attached Figure Description
[0017] The above description is only an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings.
[0018] Figure 1 This is an overall structural diagram of the present invention;
[0019] Figure 2 This is an exploded view of the overall structure of this utility model;
[0020] Figure 3 This is a structural diagram of the fixing block of this utility model;
[0021] Figure 4 This is a structural diagram of the connector of this utility model.
[0022] Legend: 1. Connecting terminal; 2. Connecting base; 3. Connecting plate; 4. Fixing block; 5. Screw; 6. Connecting block; 7. Slot; 8. Push block; 9. Limiting block; 10. Return spring; 11. Limiting groove; 12. Rectangular groove. Detailed Implementation
[0023] This application provides a wire harness connector with a terminal anti-detachment structure, effectively solving the problem that existing connectors lack effective limiting. When the equipment is under complex operating conditions such as high-frequency vibration, severe impact, or long-term high temperature, the terminals may become loose due to vibration, external force pulling, or thermal expansion and contraction, resulting in poor contact or even detachment. Existing locking mechanisms are mostly single anti-detachment structures that rely solely on ordinary buckles for fixation. After long-term use, the connector terminals are prone to loosening or even detachment. Terminal detachment can cause circuit interruption, signal loss, equipment shutdown, and functional failure. By setting a double anti-detachment structure on the wire harness connector, poor contact caused by detachment is reduced, ensuring that the connector is always in the correct position, effectively improving connection reliability and reducing various risks caused by terminal detachment.
[0024] Example
[0025] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the technical solution in this application embodiment effectively solves the problem that existing connectors lack effective limiting. When the device is under complex operating conditions such as high-frequency vibration, severe impact, or long-term high temperature, the terminals may become loose due to vibration, external force pulling, or thermal expansion and contraction, resulting in poor contact or even detachment. Existing locking mechanisms are mostly single anti-detachment structures that rely solely on ordinary buckles for fixation. After long-term use, the connector terminals are prone to loosening or even detachment. Terminal detachment not only causes circuit interruption and signal loss, but also leads to equipment shutdown and functional failure. The overall approach is as follows:
[0026] To address the problems existing in the prior art, this utility model provides a wire harness connector with a terminal anti-detachment structure, including a connecting terminal 1 and a connecting base 2. A connecting plate 3 is fixedly connected to the upper surface of the connecting terminal 1. Connecting blocks 6 are fixedly connected to both the front and rear sides of the connecting terminal 1 and the connecting base 2. Two screws 5 are provided in the two pairs of connecting blocks 6. A fixing block 4 is fixedly connected to the upper surface of the connecting base 2. A limit block 9 is movably engaged in the fixing block 4. A return spring 10 is fixedly connected to the front surface of the limit block 9. A slot 7 is formed on the surface of the connecting plate 3, and the slot 7 is movably engaged with the limit block 9. During the connection process between the connecting terminal 1 and the connecting base 2, the fixed limit block 9 is moved together by pushing the push block 8, compressing the return spring 10. Spring 10, at this time the limiting block 9 will be fully engaged in the rectangular groove 12. During the connection process of connecting terminal 1 and connecting seat 2, the connecting plate 3 fixed on the upper surface of connecting terminal 1 will be engaged with the fixing block 4. After the connection is completed, the limiting block 9 will be reset by the elastic force of the reset spring 10. At this time, the limiting block 9 will be engaged with the slot 7 opened on the surface of the connecting plate 3. At this time, the two are in a limited fixed state, and connecting terminal 1 and connecting seat 2 are also in a fixed state. The limiting can prevent the terminal from being loosened from the connector due to external force, ensuring the continuity of circuit or signal transmission. In addition, the limiting can ensure that the terminal and the connector contact are tightly attached, reducing problems such as increased contact resistance and heat generation caused by loosening.
[0027] A limiting groove 11 is provided on the left surface of the fixing block 4. The limiting groove 11 is movably engaged with the connecting plate 3. A rectangular groove 12 is provided on the inner wall of the limiting groove 11. The rectangular groove 12 is movably engaged with the limiting block 9. The rectangular groove 12 is fixedly connected to the return spring 10. A push block 8 is fixedly connected to the upper surface of the limiting block 9. After the connection is completed, the screw 5 is rotated to make it threadedly engaged with the two connecting blocks 6 fixed on the connecting terminal 1 and the connecting seat 2. With the engagement of the screw 5, the connection between the connecting terminal 1 and the connecting seat 2 becomes tighter. If the single anti-detachment structure fails due to aging, vibration or external force, the double structure can serve as a backup protection. The double anti-detachment structure can reduce poor contact caused by detachment and ensure that the connector is always in the correct position, avoiding exposed cables or accidental contact of metal contacts.
[0028] Among them, the connecting terminal 1: as the core conductive component, it is electrically connected to the wire. It is made of copper alloy and has undergone surface treatment to enhance its anti-oxidation and anti-corrosion properties, ensure good conductivity, and achieve stable power and signal transmission.
[0029] Connector 2: Provides an installation position for connector 1, cooperates with connector 1 to realize circuit connection, ensures the stability of the overall connector structure, and is an important component of the connector;
[0030] Connecting plate 3: It snaps into the fixing block 4, and the slot 7 on its surface can cooperate with the limiting block 9. The terminal is prevented from falling off by snapping and limiting, which effectively prevents the connecting terminal 1 from loosening and ensures the stability of the connection.
[0031] Fixed block 4: The interior provides movement space for the limiting block 9, which helps to limit the connection plate 3. It plays an important auxiliary role in the terminal anti-detachment structure and ensures the realization of the anti-detachment function.
[0032] Screw 5: Passes through connecting block 6 to thread the connecting terminal 1 and connecting seat 2, making the connection between the two tighter, enhancing the stability of the overall structure, and improving the reliability of the connector;
[0033] Connecting block 6: Provides an installation position for screw 5, assists in fixing connecting terminal 1 and connecting seat 2, so that screw 5 can better perform its fixing function and ensure the structural strength of connector;
[0034] Slot 7: Engages with limit block 9 to limit the connection plate 3, effectively preventing the connection terminal 1 from coming loose. It is a key part of the terminal anti-loosening structure and ensures the reliability of the connection.
[0035] Push block 8: Facilitates the movement of limit block 9 and compresses return spring 10, providing convenient operation during the installation of connecting terminal 1 and connecting base 2, and facilitating connector installation;
[0036] Limiting block 9: After engaging with slot 7, it limits the connection plate 3, preventing the connection terminal 1 from loosening due to external force, ensuring reliable connection. It is an important component to prevent the terminal from falling off and to ensure the continuity of circuit or signal transmission.
[0037] Reset spring 10: Provides elastic force to reset the limit block 9 and lock it into the slot 7, realizing automatic limit and anti-detachment without manual operation, improving the convenience and reliability of the anti-detachment structure;
[0038] Limiting groove 11: It engages with the connecting plate 3, provides guidance and positioning for the connecting plate 3, assists in achieving the anti-detachment function, ensures that the connecting plate 3 is engaged in the correct position, and improves the anti-detachment effect;
[0039] Rectangular groove 12: Provides installation space for limit block 9 and return spring 10, ensuring smooth movement of limit block 9 and enabling limit block 9 to work normally under the action of return spring 10, thus achieving the anti-detachment function.
[0040] Working principle:
[0041] During the connection process between terminal 1 and connector 2, the pusher 8 moves the fixed limiting block 9, compressing the return spring 10. At this time, the limiting block 9 is fully engaged in the rectangular groove 12. During the connection process, the connecting plate 3 fixed on the upper surface of terminal 1 engages with the fixing block 4. After the connection is completed, the spring force of the return spring 10 drives the limiting block 9 to reset. At this time, the limiting block 9 engages with the slot 7 on the surface of the connecting plate 3. Both are in a limited and fixed state, and terminal 1 and connector 2 are also in a fixed state. The limiting position prevents the terminal from loosening from the connector due to external force. The anti-detachment mechanism ensures the continuity of circuit or signal transmission, and the limiting mechanism ensures a tight fit between the terminal and the connector contact, reducing problems such as increased contact resistance and overheating caused by loosening. After connection, the screw 5 is rotated to thread it onto the two connecting blocks 6 fixed on the connecting terminal 1 and the connecting seat 2. With the screw 5 in place, the connection between the connecting terminal 1 and the connecting seat 2 becomes tighter. If the single anti-detachment structure fails due to aging, vibration or external force, the double structure can serve as a backup protection. The double anti-detachment structure can reduce poor contact caused by detachment and ensure that the connector is always in the correct position, avoiding exposed cables or accidental contact of metal contacts.
[0042] Finally, it should be noted that the above embodiments are merely examples for clearly illustrating the present invention and are not intended to limit the implementation. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.
Claims
1. A wire harness connector with a terminal anti-detachment structure, comprising a connecting terminal (1) and a connecting base (2), characterized in that, A connecting plate (3) is fixedly connected to the upper surface of the connecting terminal (1), and connecting blocks (6) are fixedly connected to both the front and rear sides of the connecting terminal (1) and the connecting seat (2); Among them, two screws (5) are provided in the two pairs of connecting blocks (6), a fixing block (4) is fixedly connected to the upper surface of the connecting seat (2), a limit block (9) is movably engaged in the fixing block (4), and a reset spring (10) is fixedly connected to the front surface of the limit block (9).
2. A wire harness connector with a terminal anti-detachment structure as described in claim 1, characterized in that: The surface of the connecting plate (3) is provided with a slot (7); The slot (7) is movably engaged with the limiting block (9).
3. A wire harness connector with a terminal anti-detachment structure as described in claim 1, characterized in that: The left surface of the fixing block (4) has a limiting groove (11); The limiting groove (11) is movably engaged with the connecting plate (3).
4. A wire harness connector with a terminal anti-detachment structure as described in claim 3, characterized in that: The inner wall of the limiting groove (11) is provided with a rectangular groove (12); The rectangular groove (12) is movably engaged with the limiting block (9).
5. A wire harness connector with a terminal anti-detachment structure as described in claim 4, characterized in that: The rectangular groove (12) is fixedly connected to the return spring (10).
6. A wire harness connector with a terminal anti-detachment structure as described in claim 1, characterized in that: A pusher (8) is fixedly connected to the upper surface of the limiting block (9).