Self-locking connector capable of being assembled

Abstract

The utility model relates to the technical field of electric connectors, and discloses a self-locking joint capable of being assembled, which comprises a main body mechanism and an internal mechanism, the internal mechanism is positioned in the main body mechanism, and the main body mechanism comprises a compression nut, a middle sleeve, a rubber core, a locking ring, a waterproof gasket, an electric contact piece, a waterproof rubber ring I, a spring body and a waterproof rubber ring II. According to the self-locking connector capable of being assembled, the wiring efficiency of a user can be greatly improved through a quick self-locking locking mode, meanwhile, the requirement of the user for wiring in a narrow space can be met, after locking, the locking ring can be stably kept in a locking state under the elastic force effect of the spring, the requirement of the user for field wiring can be met, and the practicability is high. The wire length is pulled according to the actual position, on-site autonomous wiring can be achieved to complete installation, instant cutting and real-time wire length wiring installation can be achieved according to requirements, waste caused by the fact that the wire rod is too long is avoided, equipment is simpler, and on-site wiring management is safer and more convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of electric connectors, in particular to an assembleable self-locking connector. Background Art

[0002] Self-locking connectors Connectors with self-locking structures are mainly used in mechanical engineering, instrumentation components, etc.

[0003] Prior art CN211508035U A self-locking connector, the utility model discloses a self-locking connector, including an insulating shell, including an upper shell and a lower shell, the upper shell is connected to the lower shell, and the upper shell is provided with a pressing portion; a baffle connected to the lower end of the upper shell is used to block the gap between the upper shell and the pressing portion. A baffle is provided at the lower end of the upper shell, and the baffle can block dust from entering the interior of the self-locking connector, prevent the connection between the internal cable and the connector of the self-locking connector from being covered by dust and corroding the line, prevent the signal from weakening in strength during transmission, and extend the service life of the self-locking connector. At the same time, the sheet can support the pressing portion to prevent fatigue fracture of the pressing portion. It can be understood that the insulating shell can be a rubber shell, a plastic shell, or a ceramic shell, etc. It should be noted that the pressing portion is integrally formed with the upper shell. In the process of integral forming, in order to facilitate pressing, there is a certain gap between the pressing portion and the upper shell, and one end of the pressing portion is not connected to the upper shell.

[0004] Currently, most existing connectors use threaded connection locking or rotation clamping, and the wiring is mostly welding type, and the cable fixing method is mostly molded injection molding and rubber coating. When the above-mentioned existing connectors are plugged in, they need to rotate the relevant accessories manually or with the help of tools to achieve the purpose of locking, which has slow installation efficiency, and it is not easy to use tools to rotate and reinforce the locking in a small space, and the application environment is limited. In addition, the above locking methods will also have the risk of loosening. In a vibrating environment, its rotating accessories are easy to loosen and withdraw, which will lead to poor contact of the contact parts and product failure. In terms of production, the above-mentioned existing connectors all need to install the waterproof rubber ring and the rotating accessories on the rubber core first, and then inject the rubber coating of the cylindrical sheath. During the production process, it is easy to cause the waterproof rubber ring to fall off and the appearance of the rotating accessories to be scratched. After compression molding, the length of the cable is determined and cannot be changed. During on-site wiring, if it is too short, it cannot be used. If it is too long, it will cause a waste of wires, and the extra wires will also take up space. The welding method has high requirements on practitioners and requires a certain level of skill. The operating equipment is costly, inefficient, and inconvenient. In order to meet the needs of users to be able to use on-site wiring in complex environments, the wire length standard is set, which can improve space utilization, improve users' assembly efficiency, meet users' needs in various narrow space environments, and solve the risk of poor contact of connector contacts; ensure the reliability of connector connections. Utility Model Content

[0005] 1. Technical issues to be resolved

[0006] The utility model aims to provide an assemblable self-locking joint to solve the problems of high cost, low efficiency and inconvenience of the operating equipment proposed in the above background technology.

[0007] (II) Technical solution

[0008] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an assemblable self-locking joint, comprising a main body mechanism and an internal mechanism, wherein the internal mechanism is located inside the main body mechanism, and the main body mechanism comprises a clamping nut, a middle sleeve, a rubber core, a locking ring, a waterproof gasket, an electrical contact, a waterproof rubber ring 1, a spring body and a waterproof rubber ring 2, wherein the middle sleeve is movably mounted on the left end of the clamping nut, the rubber core is movably mounted on the left side of the clamping nut, the locking ring is movably mounted on the outer end of the rubber core, the waterproof gasket is movably mounted on the left end of the clamping nut, the electrical contact is movably mounted on the right end of the rubber core, the waterproof rubber ring 1 is movably mounted on the left end of the electrical contact, the spring body is movably mounted on the outer end of the rubber core, and the waterproof rubber ring 2 is movably mounted on the right end of the locking ring.

[0009] Preferably, the internal mechanism includes an internal thread 1, a spring clamping point structure, a thread structure, a contraction taper structure, a convex point, a triangular clamping tooth, a stopper 1, a stopper 2, a slope and an internal thread 2, and the internal thread 1 is fixedly arranged inside the clamping nut.

[0010] Preferably, the spring clamping point structure is fixedly arranged at the outer end of the rubber core, and the threaded structure is fixedly arranged at the outer end of the rubber core.

[0011] Preferably, the contraction taper structure is fixedly arranged at the rear end inside the compression nut, and the protrusion is fixedly arranged at the inner end of the locking ring.

[0012] Preferably, the triangular tooth is fixedly arranged on the inner end of the lock ring, the first stopper is fixedly installed on the outer end of the rubber core, and the second stopper is fixedly installed on the outer end of the rubber core.

[0013] Preferably, the slope is fixedly arranged at the outer end of the rubber core, and the second internal thread is fixedly arranged at the outer end of the rubber core.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] The quick self-locking locking method can greatly improve the user's wiring efficiency, and at the same time meet the user's needs for wiring in a small space. It has a wider application environment. After locking, the locking ring is acted upon by the spring force, so that it can be stably maintained in the locked state, and there is no risk of loosening and causing poor contact. It is safe and reliable, and can meet the user's on-site wiring needs. The line length is pulled according to the actual position, and the on-site independent wiring can be completed and installed. There is no situation where the length is insufficient and cannot be connected, and it can be cut instantly according to demand, and the real-time line length wiring is installed, which will not cause waste caused by excessive wire length, making the equipment simpler and on-site wiring management safer and more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The three-dimensional structure of the utility model is shown in FIG. Figure 1 ;

[0017] Figure 2 The three-dimensional structure of the utility model is shown in FIG. Figure 2 ;

[0018] Figure 3 The three-dimensional structure of the utility model is shown in FIG. Figure 3 ;

[0019] Figure 4 The three-dimensional structure of the utility model is shown in FIG. Figure 4 .

[0020] In the figure: 1. Main body; 101. Locking nut; 102. Middle sleeve; 103. Rubber core; 104. Locking ring; 105. Waterproof gasket; 106. Electrical contact; 107. Waterproof rubber ring 1; 108. Spring body; 109. Waterproof rubber ring 2; 2. Internal mechanism; 201. Internal thread 1; 202. Spring clamping point structure; 203. Thread structure; 204. Contraction taper structure; 205. Protrusion; 206. Triangular clamping teeth; 207. Stopper 1; 208. Stopper 2; 209. Slope; 210. Internal thread 2. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figure 1-Figure 4The utility model provides a technical solution: an assemblable self-locking joint, comprising a main body mechanism 1 and an internal mechanism 2, the internal mechanism 2 is located inside the main body mechanism 1, the main body mechanism 1 comprises a clamping nut 101, a middle sleeve 102, a rubber core 103, a locking ring 104, a waterproof gasket 105, an electrical contact 106, a waterproof rubber ring 107, a spring body 108 and a waterproof rubber ring 2 109, the middle sleeve 102 is movably mounted on the left end of the clamping nut 101, the rubber core 103 is movably mounted on the left side of the clamping nut 101, the locking ring 104 is movably mounted on the outer end of the rubber core 103, the waterproof gasket 105 is movably mounted on the left end of the clamping nut 101, the electrical contact 106 is movably mounted on the right end of the rubber core 103, the waterproof rubber ring 107 is movably mounted on the left end of the electrical contact 106, the spring body 108 is movably mounted on the outer end of the rubber core 103, and the waterproof rubber ring 2 109 is movably mounted on the right end of the locking ring 104.

[0023] The internal mechanism 2 includes an internal thread 201, a spring clamping point structure 202, a thread structure 203, a contraction taper structure 204, a convex point 205, a triangular clamping tooth 206, a stopper 207, a stopper 208, a slope 209 and an internal thread 210. The internal thread 201 is fixedly arranged inside the clamping nut 101, the spring clamping point structure 202 is fixedly arranged at the outer end of the rubber core 103, the thread structure 203 is fixedly arranged at the outer end of the rubber core 103, the contraction taper structure 204 is fixedly arranged at the rear end inside the clamping nut 101, and the convex point 205 is fixedly arranged at the inner end of the locking ring 104.

[0024] The triangular tooth 206 is fixedly arranged on the inner end of the lock ring 104, the stopper 1 207 is fixedly arranged on the outer end of the rubber core 103, the stopper 208 is fixedly arranged on the outer end of the rubber core 103, the slope 209 is fixedly arranged on the outer end of the rubber core 103, and the inner thread 210 is fixedly arranged on the outer end of the rubber core 103.

[0025] Working principle: When the device needs to be used, the electrical contact is installed on the corresponding hole position of the rubber core 103, and it is pressed into a certain depth with the help of a tool. The electrical contact and the rubber core 103 are clamped by interference fit. The anti-misfit structure on the plug-in surface of the rubber core 103 can effectively prevent mis-insertion during operation, and its related partition groove matches the other end of the rubber core 103. After plugging and matching, each electrical contact can be isolated, which can effectively prevent mutual interference and ensure stability. After the electrical contact is welded to the cable, the cylindrical sheath is molded by compression injection molding, and the threaded structure 203 at the tail of the rubber core 103 can prevent the sheath from rotating and pulling off; then, the waterproof rubber ring can be installed on the rubber core 103, and the inner diameter of the waterproof rubber ring is smaller than the outer diameter of the position where it is sleeved, so that the waterproof rubber ring has A certain contraction force is clamped on the rubber core 103, and after the locking ring 104 is installed, the waterproof rubber ring of the plug surface is protected inside and is not easily touched by external objects, reducing the risk of falling off. A semicircular groove structure is provided on the side of the tail of the rubber core 103, and the waterproof rubber ring is just put into the position of the semicircular groove. When assembling the middle sleeve 102, axial advancement is made to ensure that the waterproof rubber ring will not run to the position following the friction, ensuring reliable waterproof requirements. The clamping point of the spring body 108 on the rubber core 103 is slightly larger than the pitch of the spring body 108, which can well clamp one end of the spring body 108 on the rubber core 103, and the pressing force is not large, and it can be clamped by manual squeezing. After one end of the spring body 108 is stuck, you only need to adjust the other end of the spring body 108, adjust the direction of the locking ring 104 and put it into the spring The spring body 108 is sufficient. This structural method can not only improve the production and assembly efficiency, but also the spring body 108 is not easily damaged, thereby ensuring the qualified rate of the product. In particular, the slot notch on the rubber core 103 and the three convex points 205 on the lock ring 104 are uniquely corresponding. If there is an offset in the assembly angle, it cannot be assembled, perfectly ensuring that the arrow mark on the lock ring 104 can accurately point to the direction. The stopper 1 on the lock ring 104 is provided with a certain guide slope 209, and the lock ring 104 is provided with a rotating block structure. When manually rotating, the focus is on the rotating block, which will not slip, and it is more labor-saving, thereby improving the production and assembly efficiency of the lock ring 104. Since the plastic has a certain elasticity, the convex point 205 will restore its deformation after rotating the stopper 1, and the stopper 1 has no slope 209 on this surface, and the lock ring 1 04 cannot easily turn over the stopper 1 and return to the original position, and the lock ring 104 will not withdraw, ensuring that the product is stable and reliable. After the lock ring 104 is assembled in place, the spring body 108 is compressed and deformed, which will apply an elastic force to the lock ring 104, and the stopper 1 on the rubber core 103 just blocks the rotation of the lock ring 104. In a natural state, the lock ring 104 is balanced and will not rotate, ensuring that the arrow mark of the lock ring 104 always points to a fixed position. This fixed position is the insertion direction of the rubber core 103. The stopper 2 set on the rubber core 103 can effectively limit the rotation range of the lock ring 104. The convex point 205 on the lock ring 104 can only move between the stopper 1 and the stopper 2, thereby limiting the compression deformation of the spring body 108 and ensuring that the deformation of the spring body 108 is within the elastic limit.The spring body 108 will not be damaged and cause failure. Two arrow marks are provided on the lock ring 104, one in the plug-in direction and the other in the rotation direction of the lock ring 104; it is convenient for users to observe the plug-in direction and the direction of pulling out and rotating the lock ring 104, and improves the user's assembly efficiency. The four triangular teeth on the lock ring 104 and the triangular shape design make the connector play a certain guiding role when plugging and buffering the plug-in thrust, thereby ensuring that the force change of the spring body 108 is uniform and the amplitude is small, extending the service life of the spring body 108 and ensuring the quality reliability of the product. When the connectors are plugged in, the triangular teeth of the lock ring 104 are rotated under force, which manifests as the spring body 108 being compressed. When the connectors are plugged in, the triangular teeth on the lock ring 104 lose the restriction of the buckle and are elastic. Under the action of the elastic force of the spring body 108, the lock ring 104 will automatically rotate and return to its original position. In this position, the buckle provided on the female rubber core 103 will block the triangular tooth of the lock ring 104, so that it cannot move in the direction of withdrawal, so as to achieve a self-locking effect. When the connector needs to be pulled out, it is only necessary to rotate the lock ring 104 in the direction of the arrow mark to make the triangular tooth deviate to a position without buckle restriction, and then it can be pulled out to achieve disassembly. This quick self-locking connection method does not require the use of tools, and the design does not require reserved tool operation space. It not only greatly improves the user's assembly and connection efficiency, but also can meet the use in various narrow space environments. After locking, the lock ring 104 is always subjected to the compression elastic force of the spring body 108 to ensure that the lock ring 104 In a stable position, it ensures that the product always maintains a stable connection state, ensuring the stability, reliability and safety of the product. In addition, the four triangular teeth of the lock ring 104 are evenly distributed, which can not only effectively decompose the pulling force on the cable and improve the tensile strength of the product, but also when the pulling direction is offset, the four teeth cooperate and restrict each other, so that the offset space of the overall connector is small, thereby avoiding large offsets between the electrical contacts, avoiding poor contact, and ensuring the stability and reliability of the electrical signal connection. The waterproof rubber pad is installed in the middle sleeve 102, and the cable with the stripped core wire passes through the clamping nut 101 and the middle sleeve 102 in turn, and the stripped copper core of the cable is inserted into the wire pressing hole of the electrical contact. The edge of the wire pressing hole is provided with a guide angle to facilitate the insertion of the copper core, and then Use an Allen wrench to lock the screw into the side threaded hole of the corresponding electrical contact, so that the screw presses and locks the copper core in the wire pressing hole to ensure good reliability of contact conduction. Compared with the traditional welding method, this screw crimping wiring method is more suitable for on-site wiring environment, without the need to use tools such as soldering irons, and the wire pulling and power connection process using soldering irons is abandoned. The working environment is safer and the process is simpler. For the requirements of practitioners, screw crimping is easier to use, simple to understand, and has lower labor costs. After the wiring is completed, it is only necessary to manually rotate the middle sleeve 102 to fix the thread on the rubber core 103. The waterproof rubber ring between the rubber core 103 and the middle sleeve 102 can achieve a waterproof effect and meet the user's waterproof needs. The wrench position on the middle sleeve 102 can be used to put a wrench.To further strengthen the locking, then, the clamping nut 101 is fixed to the middle sleeve 102 by selecting the thread. The clamping nut 101 is provided with a shrinkage taper structure. When the clamping nut 101 is retracted a little bit through the thread, the internal taper structure locks the long strip of the middle sleeve 102 toward the central axis, and then squeezes and shrinks the waterproof rubber pad to lock it to the cable to ensure the waterproof effect. When the clamping nut 101 is turned to reach the predetermined torque, the assembly wiring is completed. This predetermined torque strength needs to be determined by the standard determined by the preliminary test. If the strength is too large, the tooth pattern will be damaged, resulting in defects; if the strength is too small, the lock wire is not tight, the cable is easy to pull off, and the waterproof requirements cannot be met. When wiring on site, first connect one end as mentioned above, and then pull the wire to the other end along the wiring path, and then cut it according to the actual length required for the plug-in, and repeat the above wiring operation to complete the on-site wiring. This on-site wiring method is just right for the required wire length, and will not cause waste of wire, thereby saving. ,

[0026] Finally, it should be noted that the above content is only used to illustrate the technical solution of the utility model, rather than to limit the protection scope of the utility model. Simple modifications or equivalent substitutions of the technical solution of the utility model by ordinary technicians in this field do not deviate from the essence and scope of the technical solution of the utility model.

Claims

1. An assemblable self-locking joint, comprising a main body mechanism (1) and an internal mechanism (2), characterized in that: The internal mechanism (2) is located inside the main mechanism (1), and the main mechanism (1) comprises a clamping nut (101), a middle sleeve (102), a rubber core (103), a locking ring (104), a waterproof gasket (105), an electrical contact (106), a waterproof rubber ring 1 (107), a spring body (108) and a waterproof rubber ring 2 (109), wherein the middle sleeve (102) is movably mounted on the left end of the clamping nut (101), and the rubber core (103) is movably mounted on the left end of the clamping nut (101). On the left side, the locking ring (104) is movably mounted on the outer end of the rubber core (103), the waterproof gasket (105) is movably mounted on the left end of the clamping nut (101), the electrical contact (106) is movably mounted on the right end of the rubber core (103), the waterproof rubber ring 1 (107) is movably mounted on the left end of the electrical contact (106), the spring body (108) is movably mounted on the outer end of the rubber core (103), and the waterproof rubber ring 2 (109) is movably mounted on the right end of the locking ring (104).

2. An assemblable self-locking joint according to claim 1, characterized in that: The internal mechanism (2) comprises an internal thread 1 (201), a spring clamping point structure (202), a thread structure (203), a contraction taper structure (204), a convex point (205), a triangular clamping tooth (206), a stopper 1 (207), a stopper 2 (208), a slope (209) and an internal thread 2 (210); the internal thread 1 (201) is fixedly arranged inside the clamping nut (101).

3. An assemblable self-locking joint according to claim 2, characterized in that: The spring clamping point structure (202) is fixedly arranged on the outer end of the rubber core (103), and the thread structure (203) is fixedly arranged on the outer end of the rubber core (103).

4. An assemblable self-locking joint according to claim 3, characterized in that: The contraction taper structure (204) is fixedly arranged at the rear end inside the compression nut (101), and the protrusion (205) is fixedly arranged at the inner end of the locking ring (104).

5. An assemblable self-locking joint according to claim 4, characterized in that: The triangular locking teeth (206) are fixedly arranged on the inner end of the lock ring (104), the first stopper (207) is fixedly installed on the outer end of the rubber core (103), and the second stopper (208) is fixedly installed on the outer end of the rubber core (103).

6. An assemblable self-locking joint according to claim 5, characterized in that: The slope (209) is fixedly arranged at the outer end of the rubber core (103), and the second internal thread (210) is fixedly arranged at the outer end of the rubber core (103).

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