Secure terminal plug

Abstract

The utility model discloses a kind of firm terminal plug, it includes terminal seat, front inner shell, front shell, tail shell, front lock cap, rear lock cap, tail rubber sleeve, upper half lock hoop, lower half lock hoop and locking screw, terminal seat is located in front inner shell, front shell is sleeved on front inner shell to form annular slot, for inserting corresponding component.Tail shell front end is connected with front inner shell through front lock cap, tail rubber sleeve front end is connected with tail shell tail end through rear lock cap, the connecting lug of rear lock cap both sides is connected with upper half lock hoop, lower half lock hoop by locking screw, to hold fixedly tail rubber sleeve, so that tail rubber sleeve contraction is closely connected with cable, avoid cable tension direct action in the connecting place of cable and terminal, effectively solve the problem that traditional terminal plug is without fixed structure due to shell and cable, lead to cable back and forth to pull and make connecting place loose or disengagement, greatly improve the working stability and reliability of terminal plug, reduce the risk of electrical signal or power interruption, and long service life.

Description

Technical Field

[0001] This utility model relates to the field of plug technology, specifically to a stable terminal plug. Background Technology

[0002] In many electrical connection fields, terminal plugs, as a key connecting element, are widely used in various equipment and systems to realize the transmission of electrical signals or power. Traditional terminal plugs typically consist of a housing, a terminal block inside the housing, and terminals mounted on the terminal block. Cables pass through the housing and connect to the terminals.

[0003] However, the repeated plugging and unplugging of the terminal plug over a long period of time will also generate a pulling force on the cable. Since there is no fixed structure between the shell and the cable, the pulling force will directly act on the connection between the cable and the terminal. Under the long-term pulling force, the connection is prone to loosening or detachment, which will lead to the interruption of electrical signals or power and affect the stability of operation. Utility Model Content

[0004] To address the aforementioned shortcomings, the purpose of this utility model is to provide a stable terminal plug with a reasonable structural design and convenient use.

[0005] To achieve the above objectives, the technical solution provided by this utility model is as follows:

[0006] A sturdy terminal plug includes a terminal base and terminals disposed on the terminal base. It also includes a front inner shell, a front outer shell, a tail shell, a front locking cap, a rear locking cap, a tail rubber sleeve, an upper locking clamp, a lower locking clamp, and locking screws. The terminal base is disposed within the front inner shell, and the front outer shell is fitted onto the front inner shell, forming an annular slot between them. The front end of the tail shell is connected to the front inner shell via the front locking cap, and the front end of the tail rubber sleeve is connected to the tail end of the tail shell via the rear locking cap. A connecting ear is symmetrically provided on each side of the rear locking cap. The upper and lower locking clamps hold the tail rubber sleeve in the middle, and both ends are connected to their corresponding connecting ears via the locking screws.

[0007] In a preferred embodiment of this utility model, a sealing groove, a raised ring, and a front external thread are sequentially provided on the outer wall of the rear end of the front inner shell. A sealing ring is fitted onto the sealing groove, and a flange that can be engaged with the raised ring is provided on the inner wall of the rear end of the front outer shell. The engagement between the flange and the raised ring enhances the stability of the structure, making the connection between the front outer shell and the front inner shell tighter. The sealing ring effectively prevents external liquids, dust, and other foreign objects from entering the plug, enhancing the plug's sealing performance and stability, effectively preventing electrical faults caused by foreign object intrusion, and improving the plug's adaptability and service life in harsh environments.

[0008] In a preferred embodiment of this utility model, the outer wall of the front end of the tail shell has a radially protruding head, and the outer wall of the tail end is provided with a rear external thread. The protruding head can be used to engage with the front locking cap to achieve positioning and connection of the front end of the tail shell; the rear external thread facilitates the connection between the tail end of the tail shell and the rear locking cap, improving the overall assembly efficiency and quality of the plug, and also facilitating subsequent disassembly and maintenance.

[0009] In a preferred embodiment of this utility model, the front locking cap is fitted onto the tail shell, and the inner wall of the tail end has a snap-fit ​​that matches the protruding head. The inner wall of the front end of the front locking cap has a front internal thread that matches the front external thread. The snap-fit ​​connection with the protruding head and the thread improves the stability and firmness of the connection between the front locking cap and the tail shell and the front inner shell, ensuring the structural integrity of the plug during use, further enhancing the structural strength of the plug, and extending its service life.

[0010] In a preferred embodiment of this utility model, the rear locking cap is fitted onto the tail sleeve. The front end of the tail sleeve has a radially protruding outer portion, and the inner wall of the tail end of the rear locking cap has an inner step that matches the outer protrusion. The inner wall of the front end of the rear locking cap has a rear inner thread that matches the rear external thread. The cooperation between the outer protrusion and the inner step provides initial positioning and support for the tail sleeve and the rear locking cap. The threaded connection between the rear inner thread and the rear external thread tightly connects the rear locking cap, the tail sleeve, and the tail shell together, while clamping and fixing the tail sleeve to prevent it from detaching from the tail shell under tensile force. This makes the connection between the tail sleeve and the cable more stable, further dispersing the tensile force on the cable, reducing the risk of loosening at the connection between the cable and the terminal, and improving the reliability and stability of the plug.

[0011] As a preferred embodiment of this utility model, the rear end face of the front locking cap is provided with a radial groove, which facilitates the use of a screwing tool, making the assembly of the front locking cap convenient and secure.

[0012] As a preferred embodiment of this utility model, the outer circumferential surface of the rear lock cap is provided with anti-slip protrusions. When the operator needs to rotate the rear lock cap, the anti-slip protrusions can increase the friction between the hand and the rear lock cap, making the operation more effortless and convenient, and reducing hand slippage.

[0013] In a preferred embodiment of this invention, one end of the upper and lower locking clamps is provided with a through hole for the locking screw to pass through, and the other end is provided with a threaded hole adapted to the locking screw. By having the locking screw pass through the through hole and engage with the threaded hole, the upper and lower locking clamps can be tightly fixed together to form a complete locking clamp structure, thereby firmly clamping the tail sleeve and achieving the fixation and clamping of the cable. Simultaneously, the tightness of the locking screw can be adjusted according to actual needs to accommodate cables of different thicknesses, improving the versatility and flexibility of the plug and enhancing the cable fixing effect.

[0014] In a preferred embodiment of this invention, the front inner shell is provided with a limiting guide groove. This prevents misalignment or displacement during plug insertion and ensures the reliability of the plug connection.

[0015] The beneficial effects of this utility model are as follows: The utility model has a reasonable structural design. The terminal block is located inside the front inner shell, and the front outer shell is fitted onto the front inner shell to form an annular slot for inserting corresponding components. The front end of the tail shell is connected to the front inner shell via a front locking cap, and the front end of the tail rubber sleeve is connected to the tail end of the tail shell via a rear locking cap. The connecting ears on both sides of the rear locking cap are connected to the upper and lower locking clamps via locking screws, thereby clamping and fixing the tail rubber sleeve. This allows the tail rubber sleeve to contract and tightly connect with the cable, preventing the cable tension from acting directly on the connection between the cable and the terminal. This effectively solves the problem of loosening or detachment at the connection point caused by the cable being pulled back and forth due to the lack of a fixed structure between the outer shell and the cable in traditional terminal plugs. This greatly improves the working stability and reliability of the terminal plug, reduces the risk of electrical signal or power interruption, and has a long service life.

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0018] Figure 2 This is a cross-sectional structural diagram of the present invention.

[0019] Figure 3 This is an exploded structural diagram of the present invention. Detailed Implementation

[0020] Example: See Figures 1 to 3 The embodiment provides a stable terminal plug, which includes a terminal base 1, a front inner shell 2, a front outer shell 3, a tail shell 4, a front locking cap 5, a rear locking cap 6, a tail rubber sleeve 7, an upper half locking clamp 8, a lower half locking clamp 9, and a locking screw 10.

[0021] The terminal block 1 is disposed within the front inner shell 2, and the terminal block 1 is provided with terminals. Preferably, the front inner shell 2 is provided with a limiting guide groove 21. During the insertion and insertion of the plug, the limiting guide groove 21 can prevent misalignment or displacement, ensuring the reliability of the plug connection.

[0022] The front outer shell 3 is fitted onto the front inner shell 2, forming an annular slot 30 between them. Preferably, a sealing groove 22, a raised ring 23, and a front external thread 24 are sequentially provided on the outer wall of the rear end of the front inner shell 2. A sealing ring 25 is fitted onto the sealing groove 22, and a flange 31 that can be engaged with the raised ring 23 is provided on the inner wall of the rear end of the front outer shell 3. The engagement between the flange 31 and the raised ring 23 enhances the stability of the structure, making the connection between the front outer shell 3 and the front inner shell 2 tighter. The sealing ring 25 can effectively prevent external liquids, dust, and other foreign objects from entering the plug, enhancing the sealing performance and stability of the plug, effectively preventing electrical faults caused by foreign objects entering, and improving the adaptability and service life of the plug in harsh environments.

[0023] The front end of the tail shell 4 is connected to the front inner shell 2 via a front locking cap 5, and the front end of the tail sleeve 7 is connected to the tail end of the tail shell 4 via a rear locking cap 6. Specifically, the outer wall of the front end of the tail shell 4 has a radially protruding head 41, and the outer wall of the tail end has a rear external thread 42. The front locking cap 5 is fitted onto the tail shell 4, and the inner wall of the tail end has a snap-fit ​​that matches the head 41. The inner wall of the front end of the front locking cap 5 has a front internal thread 51 that matches the front external thread 24. Through the engagement of the snap-fit, the head 41, and the thread, the stability and firmness of the connection between the front locking cap 5 and the tail shell 4 and the front inner shell 2 are improved, ensuring the structural integrity of the plug during use, further enhancing the structural strength of the plug, and extending the service life of the plug. The protruding head 41 can be used to engage with the front locking cap 5 to achieve positioning and connection of the front end of the tail shell 4; the rear external thread 42 facilitates the connection between the tail end of the tail shell 4 and the rear locking cap 6, improving the overall assembly efficiency and quality of the plug, and also facilitating subsequent disassembly and maintenance.

[0024] The rear locking cap 6 is fitted onto the tail sleeve 7. The front end of the tail sleeve 7 protrudes radially to form an outward protrusion 71. The inner wall of the tail end of the rear locking cap 6 is provided with an inner step 61 that matches the outward protrusion 71. The inner wall of the front end of the rear locking cap 6 is provided with a rear internal thread 62 that matches the rear external thread 42. The cooperation between the outward protrusion 71 and the inner step 61 provides a preliminary positioning and support for the tail sleeve 7 and the rear locking cap 6. The threaded connection between the rear internal thread 62 and the rear external thread 42 tightly connects the rear locking cap 6, the tail sleeve 7, and the tail shell 4 together, while clamping and fixing the tail sleeve 7 to prevent it from detaching from the tail shell 4 under tensile force. This makes the connection between the tail sleeve 7 and the cable more stable, further dispersing the tensile force on the cable, reducing the risk of loosening at the connection between the cable and the terminal, and improving the reliability and stability of the plug. Preferably, a radial groove 52 is provided on the rear end face of the front locking cap 5 to facilitate cooperation with a tightening tool, thereby making the assembly of the front locking cap 5 convenient and secure. An anti-slip protrusion 63 is provided on the outer circumferential surface of the rear locking cap 6. When the operator needs to rotate the rear locking cap 6, the anti-slip protrusion 63 increases the friction between the hand and the rear locking cap 6, making the operation more effortless and convenient, and reducing hand slippage.

[0025] The rear locking cap 6 has a symmetrical connecting lug 64 on each side. The upper locking clamp 8 and the lower locking clamp 9 clamp the tail rubber sleeve 7 in the middle, and their ends are connected to their respective connecting lugs 64 by locking screws 10. Specifically, one end of the upper locking clamp 8 and the lower locking clamp 9 has a through hole for the locking screw 10 to pass through, and the other end has a threaded hole adapted to the locking screw 10. By having the locking screw 10 pass through the through hole and engage with the threaded hole, the upper locking clamp 8 and the lower locking clamp 9 can be tightly fixed together to form a complete locking structure, thereby firmly clamping the tail rubber sleeve 7 and achieving the fixation and clamping of the cable. At the same time, the tightness of the locking screw 10 can be adjusted according to actual needs to accommodate cables of different thicknesses, improving the versatility and flexibility of the plug and enhancing the fixing effect on the cable.

[0026] In use, the terminal block 1 is located inside the front inner shell 2, and the front outer shell 3 is fitted onto the front inner shell 2 to form an annular slot 30 for engaging with the sleeve on the female socket, resulting in a good fit. The front end of the tail shell 4 is connected to the front inner shell 2 via the front locking cap 5, and the front end of the tail rubber sleeve 7 is connected to the tail end of the tail shell 4 via the rear locking cap 6. The connecting ears 64 on both sides of the rear locking cap 6 are connected to the upper half locking clamp 8 and the lower half locking clamp 9 via locking screws 10, thereby clamping and fixing the tail rubber sleeve 7. This allows the tail rubber sleeve 7 to contract and connect tightly with the cable, preventing the cable tension from acting directly on the connection between the cable and the terminal. This effectively solves the problem of loosening or detachment of the connection due to the lack of a fixed structure between the outer shell and the cable in traditional terminal plugs, which causes the cable to be pulled back and forth. This greatly improves the working stability and reliability of the terminal plug.

[0027] Based on the disclosure and teachings of the above specification, those skilled in the art can make changes and modifications to the above embodiments. Therefore, this utility model is not limited to the specific embodiments disclosed and described above, and some modifications and changes to this utility model should also fall within the protection scope of the claims of this utility model. Furthermore, although some specific terms are used in this specification, these terms are only for convenience of explanation and do not constitute any limitation on this utility model. As described in the above embodiments of this utility model, wire harnesses with other structures obtained using the same or similar structures are all within the protection scope of this utility model.

Claims

1. A stable terminal plug, comprising a terminal base and terminals disposed on the terminal base, characterized in that, It also includes a front inner shell, a front outer shell, a tail shell, a front locking cap, a rear locking cap, a tail rubber sleeve, an upper half locking clamp, a lower half locking clamp, and a locking screw. The terminal block is disposed inside the front inner shell, and the front outer shell is sleeved on the front inner shell, with an annular slot formed between the two. The front end of the tail shell is connected to the front inner shell through the front locking cap, and the front end of the tail rubber sleeve is connected to the tail end of the tail shell through the rear locking cap. A connecting ear is symmetrically provided on each side of the rear locking cap. The middle of the upper half locking clamp and the lower half locking clamp clamps the tail rubber sleeve, and both ends are connected to their corresponding connecting ears through the locking screw.

2. The stable terminal plug according to claim 1, characterized in that, The outer wall of the rear end of the front inner shell is provided with a sealing groove, a convex ring and a front external thread in sequence. A sealing ring is fitted on the sealing groove, and a flange that can be snapped onto the convex ring is provided on the inner wall of the rear end of the front outer shell.

3. The stable terminal plug according to claim 2, characterized in that, The outer wall of the front end of the tail shell has a radial protrusion to form a convex head, and the outer wall of the tail end is provided with a rear external thread.

4. The stable terminal plug according to claim 3, characterized in that, The front locking cap is fitted onto the tail shell, and the inner wall of the tail end is provided with a snap that matches the protrusion. The inner wall of the front end of the front locking cap is provided with a front internal thread that matches the front external thread.

5. The stable terminal plug according to claim 4, characterized in that, The rear locking cap is fitted onto the tail rubber sleeve. The front end of the tail rubber sleeve protrudes radially to form an outward protrusion. The inner wall of the tail end of the rear locking cap is provided with an inner step that matches the outward protrusion. The inner wall of the front end of the rear locking cap is provided with a rear internal thread that matches the rear external thread.

6. The stable terminal plug according to claim 1, characterized in that, The rear end face of the front lock cap is provided with a radial groove.

7. The secure terminal plug according to claim 1 or 5, characterized in that, The outer circumferential surface of the rear lock cap is provided with anti-slip ridges.

8. The stable terminal plug according to claim 1, characterized in that, The upper and lower locking clamps are provided with a through hole at one end for the locking screw to pass through, and a threaded hole at the other end for the locking screw to be adapted to the locking screw.

9. The stable terminal plug according to claim 1, characterized in that, The front inner shell is provided with a limiting guide groove.

Images