A composite mechanical arm connector for a multi-strand single cable connection

Abstract

The application discloses a composite mechanical arm plug connector for a single cable connection, and belongs to the field of cable plug connectors.The plug connector comprises a male head and a female head, the material of the male head and the female head is stainless steel, the male head and the female head are mutually plugged, and a limiting snap ring is arranged on the male head.A fastening mechanism for clamping the limiting snap ring is arranged on the female head, a terminal A is arranged in the male head, a terminal B is arranged in the female head, the terminal A and the terminal B are mutually plugged, a buffer structure is connected to the terminal A, and a scraping mechanism for polishing the outer surface of the terminal B is arranged on the outer surface of the terminal B.The initial performance of the plug connector is improved, the plug connector can continuously play a role in a long-term use process, the service life of the plug connector is prolonged, the maintenance requirement is reduced, the operation cost is reduced, and the reliability and stability of the mechanical arm are improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of cable connectors, in particular to a composite mechanical arm connector for thick single cable connection. BACKGROUND

[0002] In the field of industrial automation, especially in the application of mechanical arms, cable connectors are key components for connecting power and signals, and their reliability and stability are crucial. However, mechanical arms usually work in harsh environments such as high temperature, low temperature, humidity, oil pollution, vibration, etc., and these environmental factors can significantly affect the performance of the connector, especially the contact reliability of the terminal.

[0003] The terminal of the cable connector in the prior art is usually made of conductive materials such as copper alloy, which can meet the basic conductive requirements in the initial use, but in the long-term use process, the terminal surface is easily affected by environmental factors to form an oxide layer or attach pollutants. These oxide layers and pollutants can significantly increase the contact resistance, reduce the conductive performance, cause unstable signal transmission, and even cause heating, open circuit and other faults, which seriously affect the normal operation and safety of the mechanical arm.

[0004] In order to solve the problem of terminal oxidation, the prior art usually adopts the following methods:

[0005] Improve the oxidation resistance of the terminal material: for example, use gold plating, silver plating and other noble metal plating layers, which can improve the oxidation resistance to some extent, but the cost is high, and after long-term use in harsh environments, oxidation or wear will still occur.

[0006] Regular maintenance and cleaning: manually disassemble the terminal regularly, clean and rust-proof the terminal, which not only takes time and effort, increases maintenance costs, but also frequent disassembly and assembly can damage the connector and reduce its service life. Or design a special structure to increase the contact pressure between the terminals to penetrate the oxide layer and achieve good electrical contact. However, excessive contact pressure may cause terminal deformation, affecting the plug-in performance and service life of the connector.

[0007] The above methods can alleviate the problems caused by terminal oxidation and pollution to some extent, but all have obvious limitations and cannot fundamentally solve the problem. Especially in applications such as mechanical arms that require high reliability and long service life, these methods are difficult to meet the actual needs. SUMMARY

[0008] The technical task of the present application is to solve the above problems, and provide a composite mechanical arm connector for thick single cable connection.

[0009] To achieve the above purpose, the present application provides the following technical scheme:

[0010] A composite mechanical arm plug connector for thick strand single cable connection, comprising a male head and a female head, the material of the male head and the female head is stainless steel, the male head and the female head are inserted into each other, and a limiting snap ring is arranged on the male head.

[0011] A fastening mechanism for clamping the limiting snap ring is arranged on the female head, an A terminal is arranged in the male head, a B terminal is arranged in the female head, the A terminal and the B terminal are inserted into each other, a buffer structure is connected to the A terminal, and a scraping mechanism for polishing the outer surface of the B terminal is arranged on the outer surface of the B terminal.

[0012] As a preferred, the male head comprises a cylindrical shell with open ends, the diameter of one end of the cylindrical shell is larger than the diameter of the other end, a limiting boss is arranged in the inside of the cylindrical shell, the A terminal is slidingly arranged in the limiting boss, the A terminal is in U-shaped structure, a plum blossom-shaped pointed cone is arranged on the outside of the head of the B terminal, and the B terminal is inserted into the A terminal.

[0013] As a preferred, the side of the limiting boss is integrally connected with a ring-shaped slide, and a sealing ring is slidingly connected to the ring-shaped slide;

[0014] The sealing ring comprises an integral connecting sliding segment and a sealing segment, the sliding segment is arranged in a bent shape and is slidingly arranged in the ring-shaped slide, and the sealing segment is arranged in a circular ring shape, and the inner ring of the sealing segment is clamped on the outer surface of the A terminal.

[0015] As a preferred, the female head comprises a butt ring matched with the large-diameter end of the cylindrical shell, the B terminal is installed on the inner ring of the butt ring, and the fastening mechanism is installed on the outside of the butt ring.

[0016] As a preferred, the fastening mechanism comprises a limiting disc, at least three limiting sliding grooves are arranged on the limiting disc, clamping blocks are slidingly connected in the three limiting sliding grooves, the clamping blocks are in "J" shape, a wedge surface is arranged at one end of the clamping blocks, a slope matched with the wedge surface is arranged on the outside of the limiting snap ring, when the clamping blocks move towards the limiting snap ring, the wedge surface of the clamping blocks abuts against the slope on the limiting snap ring, for clamping the male head and the female head, and a guide column is fixedly connected to the other end of the clamping blocks.

[0017] As a preferred, a circular ring shell is connected to one side of the limiting disc, a notch is arranged on the circular ring shell, a turntable cavity is arranged in the circular ring shell, a turntable is rotatably arranged in the turntable cavity, the turntable is arranged in a circular ring shape, anti-slip teeth are arranged on the position of the notch of the turntable, and a positioning assembly for fixing the turntable is also installed on the circular ring shell.

[0018] As preferred, the inner ring of the rotating disc is provided with a ring of splines, the circular ring shell and the butt joint ring are provided with annular grooves in communication with each other, the splines of the rotating disc extend into the annular grooves, the scraping mechanism comprises a polishing sleeve arranged between the butt joint ring and the terminal B, the inside of the polishing sleeve is provided with two groups of scraping pieces arranged in a semicircle, one side of the scraping piece is attached to the outer surface of the terminal B, the other side of the scraping piece is connected with a Z-shaped elastic piece, the outer surface of the polishing sleeve is provided with a ring of convex rings, the convex rings are provided with keys matched with the splines, so that the rotation of the rotating disc drives the rotation of the polishing sleeve.

[0019] As preferred, the inner wall of the polishing sleeve is provided with a strip-shaped sliding groove, the other end of the Z-shaped elastic piece is connected with a sliding block, and the sliding block is slidingly arranged in the strip-shaped sliding groove.

[0020] As preferred, the rotating disc is further provided with an inclined groove matched with the position of the limiting sliding groove, and the other end of the guide column is slidingly inserted into the inclined groove, so that the clamping block moves along the limiting sliding groove when the rotating disc rotates.

[0021] Compared with the prior art, the application has the advantages and positive effects that:

[0022] 1. The plug-in connector integrates the scraping mechanism, which can scrape and clean the surface of the terminal B before and during plugging, remove the oxidation layer and contaminants, and restore the cleanliness and conductivity of the terminal surface. The contact resistance is effectively reduced, and the electrical performance of the plug-in connector is improved. At the same time, the scraping mechanism drives the polishing sleeve and the scraping piece to move through the rotation of the rotating disc, realizing the circumferential and axial scraping and cleaning of the terminal B, ensuring that each part of the terminal B surface can be effectively cleaned. Not only the initial performance of the plug-in connector is improved, but also the plug-in connector can continuously function during long-term use, prolonging the service life of the plug-in connector, reducing maintenance requirements, reducing operating costs, and improving the reliability and stability of the mechanical arm.

[0023] 2. The application adopts a fastening mechanism to realize the stable connection of the male head and the female head, utilizes the mutual cooperation of the wedge surface of the clamping block and the inclined surface of the limiting clamping ring, drives the clamping block to move through the rotation of the rotating disc, ensures the firm connection of the plug-in connector, and prevents the plug-in connector from loosening due to vibration or other external forces during the operation of the mechanical arm. At the same time, the fastening mechanism is designed without vulnerable parts, and the operation is simple, which can efficiently complete the connection and disassembly without tools, greatly simplifying the assembly and disassembly process. Especially in the scene where the plug-in connector needs to be frequently disassembled and assembled for maintenance or replacement, a lot of time can be saved for workers, and the labor intensity is reduced. Compared with the traditional screw fastening method, the fastening mechanism is more humanized and convenient to operate, reduces the damage risk caused by improper tool operation, and improves the service life and reliability of the plug-in connector.

[0024] 3. The reliability and low resistance of the electrical connection are ensured through multiple mechanisms. Both terminal A and terminal B are designed with special structures. The U-shaped structure of terminal A and the star-shaped pointed design of terminal B effectively increase the contact area and reduce the contact resistance. At the same time, when terminal B is inserted into terminal A, the pointed cone can pierce the oxide layer on the surface of terminal A, ensuring good electrical contact.

[0025] 4. The invention is equipped with a buffer structure on terminal A, which can absorb vibration and impact, avoiding poor contact caused by vibration. These designs work together to ensure that the plug-in connector can maintain stable electrical performance during long-term use, reduce resistance, reduce energy loss, and improve the working efficiency and reliability of the mechanical arm.

[0026] 5. To prevent dust from entering the plug-in connector and affecting its use, a sealing ring is provided inside the male head and a rubber pad is provided at the joint of the female head. The sealing ring can move during the terminal insertion process and always maintain sealing of the exposed part of the terminal, effectively preventing dust from entering. The rubber pad at the joint of the female head can seal the joint gap between the male and female heads, further reducing the possibility of dust entering. These designs work together to create multiple dust barriers. Effectively reduce the poor contact caused by dust accumulation, improve the reliability and service life of the plug-in connector. Especially in the industrial environment with more dust, effectively ensure the stable operation of the mechanical arm, reduce the maintenance frequency, and reduce the operating cost. BRIEF DESCRIPTION OF DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0028] Figure 1 The plug-in connector structure of the embodiment of the present application is shown in the figure;

[0029] Figure 2 The closed structure of the plug-in connector of the embodiment of the present application is shown in the figure;

[0030] Figure 3 The three-dimensional structure of the embodiment of the present application is shown in the figure;

[0031] Figure 4 The internal structure of the embodiment of the present application is shown in the figure;

[0032] Figure 5 The enlarged structure of A in the embodiment of the present application is shown in the figure; Figure 4

[0033] Figure 6 ​It is a schematic view of the internal structure of the ring shell of the embodiment of the present application.

[0034] Figure 7 It is a schematic view of the structure of terminal B of the embodiment of the present application.

[0035] Figure 8 It is a schematic view of the structure of the scraping mechanism of the embodiment of the present application.

[0036] Figure 9 It is a schematic view of the cross-sectional structure of the scraping mechanism of the embodiment of the present application.

[0037] Figure 10 It is a schematic view of the internal structure of the scraping mechanism of the embodiment of the present application.

[0038] Figure 11 It is a schematic view of the circumferential friction trace of terminal B of the embodiment of the present application.

[0039] Figure 12 It is a schematic view of the axial friction trace of the embodiment of the present application.

[0040] In the figure: 100, male head; 101, limit snap ring; 102, terminal A; 103, cylindrical shell; 104, limit protruding ring; 105, annular slide; 106, sealing ring; 107, sliding section; 108, sealing section; 109, stop ring; 110, inclined surface; 200, female head; 201, fastening mechanism; 202, terminal B; 203, scraping mechanism; 204, pointed cone; 205, abutting ring; 206, limit disc; 207, limit sliding groove; 208, clamping block; 209, wedge surface; 210, guide column; 211, ring shell; 212, notch; 213, turntable cavity; 214, turntable; 215, anti-skid tooth; 216, positioning assembly; 217, annular groove; 218, polishing sleeve; 219, scraping sheet; 220, Z-shaped elastic sheet; 221, protruding ring; 222, strip-shaped sliding groove; 223, sliding block; 224, inclined groove. DETAILED DESCRIPTION

[0041] In order to enable the above-mentioned objects, features and advantages of the present application to be more clearly understood, the present application will be further described below with reference to the drawings and embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0042] The present application will be further described below with reference to the drawings and specific embodiments.

[0043] Embodiment 1: The common cable connector on the market can meet the basic needs of the mechanical arm in some aspects, but also has many limitations.

[0044] For example: the mechanical arm usually works in harsh environments, such as high temperature, low temperature, humidity, oil stain, vibration, etc. The material and structure of the traditional cable connector are easy to cause terminal oxidation in such environment, resulting in poor contact problem, affecting the reliability and service life of the mechanical arm.

[0045] Some connectors are easy to leave dust in the gap after docking for a long time, causing disassembly difficulty, and it is difficult to quickly remove during maintenance.

[0046] The present application aims to solve these problems, and provides a composite mechanical arm connector for thick single cable connection.

[0047] As shown in Figures 1-3 The male head 100 and the female head 200 are covered with a layer of stainless steel material, preferably 316L stainless steel, on the outer surface. 316L stainless steel has excellent corrosion resistance and can resist high temperature, low temperature, humidity, oil stain and corrosion of most chemicals. The male head 100 and the female head 200 are inserted into each other, the male head 100 is provided with a limiting snap ring 101, the female head 200 is provided with a fastening mechanism 201 for clamping the limiting snap ring 101, compared with the traditional screw fastening method, no tools are needed, the assembly and disassembly efficiency is improved, the inside of the male head 100 is slidably provided with a terminal A 102, the inside of the female head 200 is provided with a terminal B 202, the terminal A 102 and the terminal B 202 are inserted into each other, the traditional connector has no buffering mechanism, vibration is easy to cause poor contact, the present application is connected with a buffering structure on the terminal A 102, the buffering structure includes a buffering spring sleeved on the terminal A 102, a stop ring 109 is further arranged in the inside of the male head 100, one end of the buffering spring abuts against the stop ring 109, the other end of the buffering spring abuts against the side surface of the terminal A 102, can absorb vibration and impact, prolong the service life, the outer surface of the terminal B 202 is provided with a scraping mechanism 203 for polishing the outer surface of the terminal B 202, the scraping mechanism 203 will slightly scrape or polish the outer surface of the terminal B 202, remove the surface oxide layer, ensure that the terminal B 202 contacts well with the terminal A 102.

[0048] The male head 100 comprises a cylindrical shell 103 with two open ends, the diameter of one end of the cylindrical shell 103 is larger than that of the other end, the inside of the cylindrical shell 103 is provided with a limiting convex ring 104, and the terminal A 102 is slidingly arranged in the limiting convex ring 104. The terminal A 102 is in a U-shaped structure, which increases the contact area with the terminal B 202 and reduces the resistance. The terminal B 202 is provided with a plurality of sharp cones 204 in a plum blossom shape on the outside of the end, the terminal B 202 is inserted into the terminal A 102, the sharp cones 204 protrude 0.1 mm from the outer surface of the terminal B 202, and can pierce the oxide layer possibly formed on the surface of the terminal A 102 in the process of pulling and inserting. Through the way of increasing the contact area and setting the sharp cones 204, the reliability and conductivity of the contact are double-protected.

[0049] The side surface of the limiting convex ring 104 is integrally connected with a ring-shaped sliding channel 105, and the ring-shaped sliding channel 105 is slidingly connected with a sealing ring 106;

[0050] The sealing ring 106 comprises a sliding section 107 and a sealing section 108 which are integrally connected, the sliding section 107 is arranged in a bent shape and is slidingly arranged in the ring-shaped sliding channel 105, and the sealing section 108 is arranged in a circular ring shape and the inner ring of the sealing section 108 is clamped on the outer surface of the terminal A 102.

[0051] When the terminal B 202 is inserted into the terminal A 102, the terminal A 102 is extruded and moves to the rear side. In order to improve the sealing effect, the sealing ring 106 will move together. The sliding section 107 of the sealing ring 106 has a certain elasticity, and the sealing section 108 always plays a sealing role in the sliding process, so as to prevent dust from entering the plug-in part during use and affect the service life.

[0052] The female head 200 comprises a butt ring 205 matched with the large-diameter end of the cylindrical shell 103, a plurality of gasket grooves are arranged on the outer surface of the butt ring 205, and rubber pads are arranged in the gasket grooves. After the butt ring 205 is butted with the cylindrical shell 103, a close fit is formed, the joint can be sealed by the arranged rubber pads, dust entering is reduced, and the rubber pads are soft, so that the butt of the butt ring 205 and the cylindrical shell 103 is flexible butt, and then the fastening mechanism 201 is gradually pressed tightly. The terminal B 202 is arranged on the inner ring of the butt ring 205, and the fastening mechanism 201 is arranged on the outside of the butt ring 205.

[0053] In the embodiment 2, the embodiment is realized on the basis of the above-mentioned embodiment 1.

[0054] As Figures 4-10As shown, the specific structure of the fastening mechanism 201 is specifically disclosed, wherein the fastening mechanism 201 comprises a limiting disc 206, at least three limiting sliding grooves 207 are formed on the limiting disc 206, three clamping blocks 208 are slidingly connected in the three limiting sliding grooves 207, the clamping blocks 208 are in the shape of "J", a wedge surface 209 is arranged at one end of the clamping blocks 208, an inclined surface 110 matched with the wedge surface 209 is arranged on the outer side of the limiting snap ring 101, when the clamping blocks 208 move towards the limiting snap ring 101, the wedge surface 209 of the clamping blocks 208 abuts against the inclined surface 110 on the limiting snap ring 101, for clamping the male head 100 and the female head 200, the other end of the clamping blocks 208 is fixedly connected with a guide column 210.

[0055] One side of the limiting disc 206 is connected with a circular ring shell 211, a notch 212 is formed on the circular ring shell 211, a rotating disc cavity 213 is arranged in the circular ring shell 211, a rotating disc 214 is rotatably arranged in the rotating disc cavity 213, the rotating disc 214 is arranged in the shape of a circular ring, an anti-skid tooth 215 is arranged at the position of the rotating disc 214 located at the notch 212, and a positioning assembly 216 for fixing the rotating disc 214 is further installed on the circular ring shell 211.

[0056] The positioning assembly 216 can adopt a common positioning pin structure, which comprises two main parts of a positioning pin and an elastic mechanism, the positioning pin is arranged on the side wall of the circular ring shell 211, and is located at the position near the notch 212 and deviates from the center line of the notch 212 by a certain distance, the positioning pin is in the shape of a cylinder, and the diameter thereof is matched with the diameter of the positioning hole prearranged on the rotating disc 214, and the elastic mechanism is installed inside the circular ring shell 211 and connected with the positioning pin, so as to provide elastic support and reset force for the positioning pin.

[0057] The rotating disc 214 is further provided with an inclined groove 224 matched with the position of the limiting sliding groove 207, the other end of the guide column 210 is slidingly inserted into the inclined groove 224, when the rotating disc 214 rotates, the clamping blocks 208 are driven to move along the limiting sliding groove 207 due to the limiting effect of the guide column 210.

[0058] In specific use, first, the male head 100 and the female head 200 are connected, and after connection, the anti-skid teeth 215 at the notch 212 are rotated by fingers to rotate the rotating disc 214, the rotation of the rotating disc 214 can make the inclined groove 224 rotate, and since one end of the guide column 210 is inserted into the inclined groove 224, the rotation of the rotating disc 214 can push the guide column 210 through the inclined surface of the inclined groove 224, thereby driving the clamping block 208 to move along the limiting sliding groove 207 to the direction of the limiting clasp 101, when the clamping block 208 moves to the position of the limiting clasp 101, the wedge surface 209 of the clamping block 208 will abut against the inclined surface 110 on the limiting clasp 101. Due to the cooperation of the wedge surface 209 and the inclined surface 110, the clamping block 208 will be gradually squeezed inward, thereby firmly clamping the male head 100 and the female head 200, and realizing stable connection.

[0059] After the clamping operation is completed, the rotating disc 214 is fixed by using the positioning assembly 216 to prevent accidental rotation, thereby ensuring the stability of the connection.

[0060] When it is needed to release the connection, the rotating disc 214 is rotated in the reverse direction again, the clamping block 208 is moved in the reverse direction along the limiting sliding groove 207, and the clamping block 208 is separated from the limiting clasp 101, so that the male head 100 and the female head 200 can be easily separated.

[0061] The wedge surface 209 of the clamping block 208 and the inclined surface 110 of the limiting clasp 101 cooperate to form a self-locking structure, thereby ensuring the stability and reliability of the connection and effectively preventing accidental loosening. The fastening mechanism 201 has no vulnerable parts, has a long service life, can be repeatedly used, and reduces the maintenance cost. The design is suitable for various types of plug-in connectors, and only the sizes of the limiting sliding groove 207 and the clamping block 208 need to be adjusted to adapt to different connection requirements, thereby improving the universality of the design.

[0062] Although the fastening mechanism 201 in the above embodiment can effectively realize the stable connection of the male head 100 and the female head 200, since the surface of the terminal B 202 can be oxidized or contaminated during long-term use of the plug-in connector, the contact resistance is increased, thereby affecting the stability of the electrical performance.

[0063] Therefore, in order to further improve the electrical performance of the plug-in connector, the inner ring of the rotating disc 214 is provided with a ring of splines, the circular ring shell 211 and the abutting ring 205 are provided with annular grooves 217 that are in communication with each other, the splines of the rotating disc 214 extend into the annular grooves 217, and the scraping mechanism 203 includes a polishing sleeve 218 arranged between the abutting ring 205 and the terminal B 202, the inside of the polishing sleeve 218 is provided with two groups of scraping pieces 219 arranged in a semicircle, one side of the scraping piece 219 is attached to the outer surface of the terminal B 202, the other side of the scraping piece 219 is connected with a Z-shaped elastic piece 220, and the outer surface of the polishing sleeve 218 is provided with a ring of convex rings 221, the convex ring 221 is provided with keys matched with the splines, so that the rotation of the rotating disc 214 drives the rotation of the polishing sleeve 218.

[0064] The inner wall of the polishing sleeve 218 is provided with a strip-shaped sliding groove 222, the other end of the Z-shaped elastic piece 220 is connected with a sliding block 223, and the sliding block 223 is slidingly arranged in the strip-shaped sliding groove 222.

[0065] Before use, the plug-in connector can first idle the rotating disc 214, so that the rotating disc 214 drives the rotation of the polishing sleeve 218, the polishing sleeve 218 drives the rotation of the scraping pieces 219 inside, and due to the arrangement of the Z-shaped elastic piece 220, the scraping piece 219 exerts a certain pressure on the outer surface of the terminal B 202, and the scraping piece 219 performs circumferential movement type scraping and cleaning on the surface of the terminal B 202 in the rotating process, as shown in FIG. 8, removes the oxide layer or contaminants, and restores the conductive performance of the surface of the terminal B 202. Figure 11

[0066] The outer end surface of the terminal B 202 is flush with the outer end surface of the polishing sleeve 218, so that the scraping mechanism 203 can perform circumferential movement type polishing on the end portion of the terminal B 202.

[0067] Through the above design, the scraping mechanism 203 can clean and maintain the surface of the terminal B 202 before the plug-in connector is connected, so as to ensure that the contact resistance always remains at a low level, thereby significantly improving the electrical performance and service life of the plug-in connector. At the same time, the scraping piece 219 and the Z-shaped elastic piece 220 have simple design structure, are easy to manufacture and install, and further reduce the production cost.

[0068] In the use process of the plug-in connector, the scraped part of the terminal B 202 is inserted into the terminal A 102, and due to the arrangement of the plum blossom-shaped sharp cone 204 on the outer side of the end of the terminal B 202, the terminal B 202 can pierce the oxide layer that may be formed on the surface of the terminal A 102 during the insertion into the terminal A 102, and generate a scratching path consistent with the axial direction of the terminal A 102, as shown in FIG. 10. Figure 12

[0069] ​​It needs to be further explained that during the insertion of terminal B202 into terminal A102, the end of terminal A102 will be against the end face of scraping piece 219, and due to the strip-shaped sliding groove 222 opened on the inner wall of the polishing sleeve 218, the Z-shaped elastic piece 220 slides in the strip-shaped sliding groove 222 through the sliding block 223, so that the terminal A102 will extrude the scraping piece 219, so that the scraping piece 219 moves inward, and in the process of moving the scraping piece 219, the scraping piece 219 also realizes the axial scraping and cleaning of the surface of terminal B202.

[0070] After the insertion is completed, then rotate the turntable 214, the turntable 214 drives the clamping block 208 to move along the limiting sliding groove 207 to the direction of the limiting clamping ring 101, firmly clamping the male head 100 and the female head 200, on the other hand, further realizing the rotation of the scraping piece 219, which can scrape and clean the rear side position of terminal B202. In this process, the axial and circumferential movement of the scraping piece 219 effectively removes the possible small dirt or oxidation layer on the surface of terminal B202, ensures that the contact surface of terminal B202 and terminal A102 always remains clean, reduces the increase of contact resistance, and further improves the electrical performance and reliability of the plug-in part.

[0071] Specific working principle:

[0072] Idling:

[0073] Terminal B202 is not inserted into terminal A102. The end face of the scraping piece 219 slightly contacts the outer surface of terminal B202 under the action of the Z-shaped elastic piece 220. The turntable 214 drives the polishing sleeve 218 to rotate through the spline, and the polishing sleeve 218 drives the internal scraping piece 219 to make circumferential motion around the axis of terminal B202. In the process of rotation, the end face of the scraping piece 219 is in close contact with the outer surface of terminal B202, and the surface of terminal B202 is scraped and cleaned to remove the oxidation layer, dirt and dust on the surface. Due to the action of the Z-shaped elastic piece 220, the scraping piece 219 exerts a certain pressure on terminal B202 to ensure the scraping effect.

[0074] Insertion:

[0075] The rotating disc 214 is in the state of idling, and the scraping piece 219 has pre-cleaned the terminal B 202. The terminal B 202 is inserted into the terminal A 102. As the terminal B 202 is inserted into the terminal A 102, the terminal A 102 moves backward and presses the buffer spring, and the terminal B 202 pierces the oxide layer that may be formed on the surface of the terminal A 102. In this process, the insertion of the terminal B 202 pushes the scraping piece 219 to move inward, and the scraping piece 219 is in close contact with the side surface of the terminal B 202 and slides along the axial direction of the terminal B 202, achieving axial scraping cleaning of the surface of the terminal B 202. After the terminal B 202 is completely inserted into the terminal A 102, the end of the terminal A 102 abuts against the end surface of the scraping piece 219, and at this time, the terminal A 102 and the terminal B 202 have established an electrical connection.

[0076] After the insertion is completed:

[0077] The rotating disc 214 is rotated, and the rotating disc 214 drives the clamping block 208 to move through the inclined groove 224 and the guide column 210. The wedge surface 209 of the clamping block 208 abuts against the inclined surface 110 of the limiting clamping ring 101, and the male head 100 and the female head 200 are firmly clamped. While the rotating disc 214 is locked, the rotating disc 214 continues to rotate the polishing sleeve 218 through the spline, and the polishing sleeve 218 drives the scraping piece 219 to continue to make a circular motion around the axis of the terminal B 202, and the scraping piece 219 continuously scrapes the rear position (the end close to the abutting ring 205) of the terminal B 202. The rotating disc 214 is locked by the positioning assembly 216, the male head 100 and the female head 200 are firmly connected, the terminal A 102 and the terminal B 202 maintain good electrical contact, the scraping piece 219 continuously cleans the terminal B 202, and the contact resistance is ensured to be always kept at a low level.

[0078] The skilled in the art can easily implement the present application through the above specific embodiments. However, it should be understood that the present application is not limited to the above specific embodiments. On the basis of the disclosed embodiments, the skilled in the art can arbitrarily combine different technical features to realize different technical solutions.

Claims

1. A composite mechanical arm connector for a coarse strand single cable connection, comprising a male head (100) and a female head (200), the material of the male head (100) and the female head (200) is stainless steel material, the male head (100) and the female head (200) are mutually plugged, characterized in that: The male head (100) is provided with a limiting snap ring (101), the female head (200) is provided with a fastening mechanism (201) for clamping the limiting snap ring (101), the fastening mechanism (201) comprises a limiting disc (206), at least three limiting sliding grooves (207) are formed in the limiting disc (206), three clamping blocks (208) are slidably connected in the limiting sliding grooves (207), the clamping block (208) is in the shape of "J", one end of the clamping block (208) is provided with a wedge surface (209), the outer side of the limiting snap ring (101) is provided with a slope (110) matched with the wedge surface (209); When the clamping block (208) moves to the limiting snap ring (101), the wedge surface (209) of the clamping block (208) abuts against the slope (110) on the limiting snap ring (101), so as to clamp the male head (100) and the female head (200), the other end of the clamping block (208) is fixedly connected with a guide column (210), the inside of the male head (100) is provided with a terminal A (102), the inside of the female head (200) is provided with a terminal B (202), the terminal A (102) and the terminal B (202) are inserted with each other, the outer side of the terminal B (202) is provided with a sharp cone (204) in the shape of plum blossom, the terminal B (202) is inserted into the terminal A (102), the terminal A (102) is connected with a buffer structure, the outer surface of the terminal B (202) is provided with a scraping mechanism (203) for polishing the outer surface of the terminal B (202); One side of the limiting disc (206) is connected with a circular ring shell (211), the circular ring shell (211) is provided with a notch (212), the circular ring shell (211) is provided with a rotating disc cavity (213) therein, and the rotating disc cavity (213) is rotatably provided with a rotating disc (214); The inner ring of the rotating disc (214) is provided with a ring of splines, the circular ring shell (211) and the butt joint ring (205) are provided with annular grooves (217) in communication with each other, the splines of the rotating disc (214) extend into the annular grooves (217), the scraping mechanism (203) comprises a polishing sleeve (218) arranged between the butt joint ring (205) and the terminal B (202), the inside of the polishing sleeve (218) is provided with two groups of scraping pieces (219) in the shape of semicircle, one side of the scraping piece (219) is attached to the outer surface of the terminal B (202), the other side of the scraping piece (219) is connected with a Z-shaped elastic sheet (220), the outer surface of the polishing sleeve (218) is provided with a ring of convex rings (221), the convex ring (221) is provided with keys matched with the splines, so that the rotation of the rotating disc (214) drives the rotation of the polishing sleeve (218).

2. A composite mechanical arm connector for a single cable connection of a strand according to claim 1, characterized in that: The male head (100) comprises a cylindrical shell (103) with open ends, the diameter of one end of the cylindrical shell (103) is larger than that of the other end, the inside of the cylindrical shell (103) is provided with a limiting boss (104), the terminal A (102) is slidingly arranged in the limiting boss (104), and the terminal A (102) has a U-shaped structure.

3. A composite mechanical arm connector for a single cable connection of a strand according to claim 2, characterized in that: The side of the limiting boss (104) is integrally connected with a ring-shaped sliding channel (105), and a sealing ring (106) is slidingly connected to the ring-shaped sliding channel (105). The sealing ring (106) comprises a sliding section (107) and a sealing section (108) which are integrally connected, the sliding section (107) is arranged in a bent shape and slidingly arranged in the ring-shaped sliding channel (105), and the sealing section (108) is arranged in a circular ring shape, and the inner ring of the sealing section (108) is clamped on the outer surface of the terminal A (102).

4. A composite mechanical arm connector for a single cable connection of a strand according to claim 2, characterized in that: The female head (200) comprises a butt ring (205) matched with the large-diameter end of the cylindrical shell (103), the terminal B (202) is mounted on the inner ring of the butt ring (205), and the fastening mechanism (201) is mounted on the outer side of the butt ring (205).

5. A composite mechanical arm connector for a single cable connection of a strand according to claim 1, characterized in that: The rotating disc (214) is arranged in a circular ring shape, the rotating disc (214) is provided with anti-skid teeth (215) at the position of the notch (212), and the circular ring shell (211) is further provided with a positioning assembly (216) for fixing the rotating disc (214).

6. A composite mechanical arm connector for a single cable connection of a strand according to claim 5, characterized in that: A strip-shaped sliding groove (222) is formed in the inner wall of the polishing sleeve (218), the other end of the Z-shaped elastic sheet (220) is connected with a sliding block (223), and the sliding block (223) is slidingly arranged in the strip-shaped sliding groove (222).

7. A composite mechanical arm connector for a single cable connection of a strand according to claim 6, characterized in that: The rotating disc (214) is further provided with an inclined groove (224) matched with the position of the limiting sliding groove (207), the other end of the guide column (210) is slidingly inserted into the inclined groove (224), and when the rotating disc (214) rotates, the clamping block (208) is driven to move along the limiting sliding groove (207) due to the limiting effect of the guide column (210).

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