Telescopic high-voltage large-current connecting structure

Abstract

The invention discloses a telescopic high-voltage large-current connection structure, belongs to the technical field of conductive connection structures, and solves the problem that the pulling effect on a cable is large in the plugging process of an existing plugging connection device. The device specifically comprises a shell, and a telescopic connecting mechanism and a driving mechanism are arranged in the shell; one end of the telescopic connecting mechanism is connected with a connector plug, and the connector plug is connected with the driving mechanism; and the other end of the telescopic connecting mechanism is connected with a cable connecting plug. According to the invention, when the connector plug and the connector socket are plugged, the driving mechanism drives the connector plug to move forwards, the cable connecting plug is kept static, and at the moment, the cable connecting plug and the connector plug are electrically connected through the telescopic effect of the telescopic connecting mechanism; when the automatic plugging connection device performs plugging operation, the cable cannot be dragged to move, and the plugging process is not affected by the flexible cable; and meanwhile, the cable is prevented from being pulled, so that a cable joint is prevented from being damaged.

Description

Technical Field

[0001] The invention relates to the technical field of conductive connection structures, and in particular to a telescopic high-voltage and high-current connection structure. Background Art

[0002] With the continuous improvement of automation level, automatic plug-in connection devices are becoming more and more popular in the market. As the hub of signal transmission, automatic plug-in connection devices are responsible for transmitting electrical, optical, fluid and other signals. When transmitting electrical signals, especially high-voltage and high-current signals, the traditional method is to use cables for connection; the diameter of high-voltage and high-current transmission cables is generally required to be large.

[0003] There are many defects in the cable connection method in the prior art. For example, due to the limitations of the use environment, the external dimensions of some automatic plug-in connection devices are very small, while the diameter of the cable that transmits large current signals is very large, and it is difficult or even impossible to route the wires inside the device; a motor drive mechanism is designed at one end of the automatic plug-in connection device, and the motor drive mechanism drives the cable to retract together, but because the cable is flexible, its movement trajectory during the retraction process is not controlled, and it is easy to interfere with the transmission mechanism, causing the mechanism to get stuck or the cable to be damaged. In addition, the joints at both ends of the cable are pulled for a long time during the movement, and the cable is heavy, so the pulling force is large, which can easily cause damage to the cable or even fall off.

[0004] Therefore, the present invention provides a retractable reliable high-voltage and high-current connection structure, through the retractable effect of the connection structure, it is unnecessary to drag the cable to move during the plugging process. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides a telescopic high-voltage and high-current connection structure, which solves the problem of large pulling effect on cables during the plugging process of the existing plug-in connection device.

[0006] In order to achieve the above object, the technical solution adopted by the present invention is:

[0007] A telescopic high-voltage and high-current connection structure comprises a shell, wherein a telescopic connection mechanism and a drive mechanism are arranged inside the shell; one end of the telescopic connection mechanism is connected to a connector plug, and the connector plug is connected to the drive mechanism; the other end of the telescopic connection mechanism is connected to a cable connection plug.

[0008] In this solution, when the connector plug is plugged into the connector socket, the driving mechanism drives the connector plug to move forward, and the cable connection plug used to connect the cable remains stationary. At this time, the cable connection plug and the connector plug are electrically connected through the telescopic action of the telescopic connection mechanism; when the automatic plug-in connection device is performing the plug-in operation, it will not drag the cable to expand and contract, and the plug-in process will not be affected by the flexible cable, while avoiding pulling on the cable, which may cause damage to the cable connector.

[0009] Furthermore, the telescopic connection mechanism includes a pin member and a socket member, one end of the socket member is connected to the cable connection plug, and the other end of the socket member is provided with a plug-in hole; one end of the pin member is inserted into the plug-in hole, and the other end of the pin member is connected to the connector plug; a ring spring is embedded on the inner wall of the plug-in hole, and the ring spring abuts against the outer surface of the pin member.

[0010] In this solution, the movement of the connector plug drives the pin member to move synchronously, and the pin member moves inside the plug-in hole of the socket member. During the movement, the pin member and the socket member always maintain electrical connection, thereby realizing the transmission of electrical signals between the cable connection plug and the connector plug. A ring spring is designed between the pin member and the socket member to ensure the stability of the electrical signal transmission between the two.

[0011] Furthermore, a protective shell is arranged outside the pin part; an insulating sleeve is wrapped outside the socket part, and the insulating sleeve is fixed on the shell;

[0012] A split groove structure is provided at the end of the jack piece, and the split groove structure is connected to the cable connection plug through the cable connection socket.

[0013] In this solution, since the pins of the connector plug and the center lines of the cable connection plug are not in the same straight line, the socket part and the insulating hole are designed as special-shaped structures to ensure the assembly accuracy and fixation reliability of the pin part and the socket part; the insulating sleeve can ensure safety during use.

[0014] Furthermore, the driving mechanism includes a motor, which is connected to the moving component through a transmission mechanism; the connector plug is arranged on the moving component;

[0015] The moving assembly includes a first movable plate, one end of the guide rod is connected to the first movable plate, the other end of the guide rod passes through the first support frame and the second support frame in sequence, and is connected to the second movable plate; the connector plug is embedded in the middle mounting hole of the second movable plate, and is connected to the second movable plate by bolts; the bottoms of the first support frame and the second support frame are installed on the housing;

[0016] Two transmission racks are connected between the first movable plate and the second movable plate, and the two transmission racks are connected to the transmission mechanism.

[0017] In this solution, the motor drives the first movable plate, the guide rod and the second movable plate to move through the transmission mechanism. The guide rod can make the first movable plate and the second movable plate move smoothly to ensure the accuracy of the connector plug when plugging.

[0018] Furthermore, the transmission mechanism includes a worm, two ends of which are movably connected to the first support frame and the second support frame respectively, one end of the worm is transmission connected to the motor, and the motor is installed at the bottom of the shell; the top of the worm is transmission connected to a worm wheel, and the two ends of the transmission shaft in the center of the worm wheel are respectively movably connected to two shaft seats, and the two shaft seats are installed on the second support frame; two transmission gears are arranged on the transmission shaft, and the two transmission gears are respectively meshed and connected with two transmission racks.

[0019] In this solution, when electric drive is used, the motor drives the worm wheel and the transmission shaft in the center of the worm wheel to rotate through the worm, and the transmission gears at both ends of the transmission shaft rotate synchronously. The transmission gears rotate to drive the transmission rack forward or backward, thereby driving the first movable plate and the second movable plate to move forward or backward, so that the connector plug can be plugged in and out.

[0020] Furthermore, a first bevel gear is provided on the worm, the first bevel gear is meshed and connected with the second bevel gear, and the center of the second bevel gear is connected with a manual input shaft.

[0021] In this solution, when human drive is used, the manual input shaft is manually driven to rotate, driving the second bevel gear to rotate, the second bevel gear drives the first bevel gear and the worm to rotate synchronously, the worm drives the worm wheel and the transmission gear to rotate, and the transmission gear drives the transmission rack to move, thereby realizing the connection and separation of the connector plug; this design is applicable to both electric drive and human drive, has a wide range of uses, and can be applied to a variety of scenarios.

[0022] Furthermore, the insulating sleeve is made of PPS material in one piece; the wall thickness of the insulating sleeve is not less than 12.5 mm.

[0023] In this solution, the wall thickness of the insulating sleeve is not less than 12.5 mm, which can effectively prevent voltage breakdown during power-on.

[0024] Furthermore, a forward limit sensor and a backward limit sensor are also arranged in the shell.

[0025] In this solution, the forward limit sensor and the reverse limit sensor are used to detect the forward or reverse position of the connector plug, so as to facilitate precise control thereof.

[0026] Furthermore, the material of the jack is copper, and the surface of the copper is silver-plated.

[0027] Furthermore, the diameter of the pin member is not less than 10 mm; the length of the pin member and the depth of the plug hole are not less than 50 mm.

[0028] In this solution, the diameter of the pin part is not less than 10mm to meet the current requirement of 200A; the length of the pin part is not less than 50mm to ensure that after the connector plug is inserted into place, the pin part and the socket part have sufficient contact area to ensure that a passage is formed between the cable connection plug and the connector plug.

[0029] The beneficial effects of the present invention are:

[0030] In the telescopic high-voltage and high-current connection structure provided by the present invention, a telescopic current connection structure is introduced into an automatic plug-in connection device for the first time, which improves the intelligence and automation of the plug-in work, can avoid internal wiring problems to a limited extent, and improve the stability of the current transmitted by the device; at the same time, by adopting a telescopic connection method, the cable will not be dragged during the plug-in process, thereby avoiding damage to the cable connector.

[0031] When the connector plug is plugged into the connector socket, the motor drives the connector plug forward through the transmission mechanism, so that the pin part moves inside the plug-in hole of the socket part. During the movement, the pin part and the socket part always maintain electrical connection, realizing the transmission of electrical signals when the distance between the cable connection plug and the connector plug is extended or retracted; a ring spring is designed between the pin part and the socket part to ensure the stability of the electrical signal transmission between the two. The design of the drive mechanism is compatible with both electric drive and human drive, with a wider range of uses and more application scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a structural schematic diagram of a telescopic high-voltage and high-current connection structure of the present invention;

[0033] Figure 2 This is a schematic structural diagram of a telescopic high-voltage and high-current connection structure of the present invention after removing the shell;

[0034] Figure 3 It is a structural schematic diagram of the telescopic connection mechanism in the present invention;

[0035] Figure 4 is a schematic cross-sectional structure diagram of the telescopic connection mechanism of the present invention;

[0036] Figure 5 It is a schematic diagram of the structure of the pin member in the present invention;

[0037] Figure 6 It is a schematic diagram of the structure of the jack component in the present invention;

[0038] Figure 7 This is a schematic structural diagram of a telescopic high-voltage and high-current connection structure of the present invention from another perspective after removing the shell;

[0039] Figure 8 It is a structural schematic diagram of the mobile component in the present invention;

[0040] Fig. 9 It is a structural schematic diagram of the transmission mechanism in the present invention;

[0041] Fig.10 It is a top view of the transmission mechanism in the present invention.

[0042] Reference numerals:

[0043] 1. Shell; 2. Telescopic connection mechanism; 21. Pin member; 22. Socket member; 23. Insulating sleeve; 24. Protective shell; 25. Ring spring; 26. Cable connection socket; 3. Driving mechanism; 31. Motor; 32. Transmission mechanism; 321. Worm; 322. Worm wheel; 323. Transmission shaft; 324. Shaft seat; 325. Transmission gear; 327. First bevel gear; 328. Second bevel gear; 329. Manual input shaft; 33. Moving assembly; 331. First support frame; 332. Second support frame; 333. Guide rod; 334. Second movable plate; 335. First movable plate; 336. Transmission rack; 4. Connector plug; 5. Cable connection plug; 6. Forward limit sensor; 7. Reverse limit sensor; DETAILED DESCRIPTION

[0044] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments. The specific implementation of the present invention is described below to facilitate the understanding of the present invention by those skilled in the art, but it should be clear that the present invention is not limited to the scope of the specific implementation. For those of ordinary skill in the art, as long as various changes are within the spirit and scope of the present invention defined and determined by the attached claims, these changes are obvious, and all inventions and creations using the concept of the present invention are protected.

[0045] like Figure 1 and Figure 2 As shown, this embodiment provides a telescopic high-voltage and high-current connection structure, which introduces a telescopic current connection structure into an automatic plug-in connection device for the first time, thereby improving the intelligence and automation of the plug-in work; it specifically includes:

[0046] Housing 1, telescopic connection mechanism 2, drive mechanism 3, connector plug 4 and cable connection plug 5;

[0047] Among them, a telescopic connection mechanism 2 and a driving mechanism 3 are arranged inside the housing 1; one end of the telescopic connection mechanism 2 is connected to a connector plug 4, and the connector plug 4 is connected to the driving mechanism 3; the other end of the telescopic connection mechanism 2 is connected to a cable connection plug 5. When the connector plug 4 is plugged into the connector socket, the driving mechanism 3 drives the connector plug 4 to move forward, and the cable connection plug 5 for connecting the cable remains stationary. At this time, the telescopic connection mechanism 2 connecting the cable connection plug 5 and the connector plug 4 realizes the electrical connection between the cable connection plug 5 and the connector plug 4 through telescopic action; this design does not drag the cable to extend and retract when the automatic plug-in connection device is plugging and unplugging, and the plugging process is not affected by the flexible cable, while avoiding pulling on the cable, thereby damaging the cable connector.

[0048] The specific structure of the telescopic connection mechanism 2 is:

[0049] The telescopic connection mechanism 2 includes a pin member 21, a socket member 22, a protective shell 24 and an insulating sleeve 23;

[0050] like Figure 3 and Figure 4 As shown, one end of the socket member 22 is connected to the cable connection plug 5, and the other end of the socket member 22 is provided with a plug hole; one end of the pin member 21 is inserted into the plug hole, and the other end of the pin member 21 is connected to the connector plug 4; a ring spring 25 is embedded on the inner wall of the plug hole, and the ring spring 25 abuts against the outer surface of the pin member 21. The connector plug 4 drives the pin member 21 to move synchronously during movement, and the pin member 21 moves inside the plug hole of the socket member 22. During the movement, the pin member 21 and the socket member 22 always maintain electrical connection, realizing the transmission of electrical signals between the cable connection plug 5 and the connector plug 4; the ring spring 25 is designed between the pin member 21 and the socket member 22 to ensure the stability of the electrical signal transmission between the two.

[0051] like Figure 5 As shown, the pin part 21 is provided with a protective shell 24; the socket part 22 is wrapped with an insulating sleeve 23, and the insulating sleeve 23 is fixed on the housing 1. Figure 6 As shown, the end of the socket member 22 is provided with a split groove structure, which is connected to the cable connection plug 5 through the cable connection socket 26. Since the pins of the connector plug 4 and the center lines of the cable connection plug 5 are not in the same straight line, the socket member 22 and the insulating hole are designed as special-shaped structures to ensure the assembly accuracy and fixation reliability of the pin member 21 and the socket member 22; the insulating sleeve 23 can ensure safety during use.

[0052] The insulating sleeve 23 is made of PPS material in an integrated manner; the wall thickness of the insulating sleeve 23 is not less than 12.5 mm, which can effectively prevent voltage breakdown during power-on.

[0053] The material of the socket 22 is copper, and the surface of the copper is silver-plated.

[0054] The diameter of the pin member 21 is not less than 10 mm; the length of the pin member 21 and the depth of the plug hole are not less than 50 mm, ensuring that after the connector plug 4 is plugged into place, the pin member 21 and the socket member 22 have sufficient contact area to ensure that a passage is formed between the cable connection plug 5 and the connector plug 4.

[0055] The specific structure of the driving mechanism 3 is:

[0056] The driving mechanism 3 includes a motor 31, a transmission mechanism 32 and a moving assembly 33;

[0057] like Figure 7 As shown, the motor 31 is connected to the moving component 33 via a transmission mechanism 32 ; the connector plug 4 is arranged on the moving component 33 .

[0058] The moving assembly 33 includes a first movable plate 335, a second movable plate 334, a first support frame 331 and a second support frame 332;

[0059] like Figure 8 As shown, one end of the guide rod 333 is connected to the first movable plate 335, and the other end of the guide rod 333 passes through the first support frame 331 and the second support frame 332 in sequence, and is connected to the second movable plate 334; the connector plug 4 is embedded in the middle mounting hole of the second movable plate 334, and is connected to the second movable plate 334 by bolts; the bottoms of the first support frame 331 and the second support frame 332 are installed on the housing 1; two transmission racks 336 are connected between the first movable plate 335 and the second movable plate 334, and the two transmission racks 336 are connected to the transmission mechanism 32. The motor 31 drives the first movable plate 335, the guide rod 333 and the second movable plate 334 to move through the transmission mechanism 32, and the guide rod 333 can make the first movable plate 335 and the second movable plate 334 move smoothly, ensuring the accuracy of the connector plug 4 when plugging.

[0060] The transmission mechanism 32 includes a worm 321, a worm wheel 322, a transmission shaft 323, a transmission gear 325 and a transmission rack 336;

[0061] As shown in 9, the two ends of the worm 321 are movably connected to the first support frame 331 and the second support frame 332 respectively, one end of the worm 321 is transmission-connected to the motor 31, and the motor 31 is installed at the bottom of the shell 1; the top of the worm 321 is transmission-connected to the worm wheel 322, and the two ends of the transmission shaft 323 in the center of the worm wheel 322 are movably connected to the two shaft seats 324 respectively, and the two shaft seats 324 are installed on the second support frame 332; two transmission gears 325 are arranged on the transmission shaft 323, and the two transmission gears 325 are respectively meshed and connected with two transmission racks 336.

[0062] When driven by electricity, the motor 31 drives the worm wheel 322 and the transmission shaft 323 at the center of the worm wheel 322 to rotate through the worm 321, and the transmission gears 325 at both ends of the transmission shaft 323 rotate synchronously. The transmission gear 325 drives the transmission rack 336 forward or backward during rotation, thereby driving the first movable plate 335 and the second movable plate 334 to move forward or backward, so that the connector plug 4 can complete the insertion and separation.

[0063] like Fig.10 As shown, a first bevel gear 327 is also provided on the worm 321 , and the first bevel gear 327 is meshedly connected with a second bevel gear 328 , and a manual input shaft 329 is connected to the center of the second bevel gear 328 .

[0064] When using human drive, the manual input shaft 329 is manually driven to rotate, driving the second bevel gear 328 to rotate, and the second bevel gear 328 drives the first bevel gear 327 and the worm 321 to rotate synchronously. The worm 321 drives the worm wheel 322 and the transmission gear 325 to rotate, and the transmission gear 325 drives the transmission rack 336 to move, thereby realizing the insertion and separation of the connector plug 4; this design is applicable to both electric drive and human drive, has a wide range of uses, and can be applied to a variety of scenarios.

[0065] A forward limit sensor 6 and a backward limit sensor 7 are also provided in the housing 1. The forward limit sensor 6 and the backward limit sensor 7 detect the forward or backward position of the connector plug 4, so as to facilitate accurate control thereof.

[0066] The working principle of this embodiment is:

[0067] When the telescopic high-voltage and high-current connection structure of this embodiment is in use, the motor 31 drives the transmission rack 336 to move through the transmission mechanism 32, and the transmission rack 336 drives the overall movement of the first movable plate 335, the guide rod 333 and the second movable plate 334; the first movable plate 335 drives the connector plug 4 to move.

[0068] The pin member 21 moves synchronously with the connector plug 4. During the movement, the pin member 21 moves inside the plug-in hole of the socket member 22. During the movement, the pin member 21 and the socket member 22 always maintain electrical connection, thereby realizing the transmission of electrical signals between the cable connection plug 5 and the connector plug 4. During the plug-in process of the connector plug 4, the telescopic effect of the pin member 21 and the socket member 22 replaces the movement of the cable connection plug 5 and the cable, thereby facilitating wiring while avoiding pulling on the cable.

[0069] Those skilled in the art will appreciate that the embodiments herein are intended to help readers understand the principles of the present invention, and should be understood that the protection scope of the present invention is not limited to such specific statements and embodiments. Those skilled in the art can make various other specific variations and combinations that do not deviate from the essence of the present invention based on the technical revelations disclosed by the present invention, and these variations and combinations are still within the protection scope of the invention.

Claims

1. A telescopic high-voltage and high-current connection structure, characterized in that: The invention comprises a housing (1), wherein a telescopic connection mechanism (2) and a driving mechanism (3) are arranged inside the housing (1); one end of the telescopic connection mechanism (2) is connected to a connector plug (4), and the connector plug (4) is connected to the driving mechanism (3); and the other end of the telescopic connection mechanism (2) is connected to a cable connection plug (5).

2. The telescopic high-voltage and high-current connection structure according to claim 1, characterized in that: The telescopic connection mechanism (2) comprises a pin member (21) and a socket member (22); one end of the socket member (22) is connected to the cable connection plug (5), and the other end of the socket member (22) is provided with a plug hole; one end of the pin member (21) is inserted into the plug hole, and the other end of the pin member (21) is connected to the connector plug (4); a ring spring (25) is embedded on the inner wall of the plug hole, and the ring spring (25) abuts against the outer surface of the pin member (21).

3. The telescopic high-voltage and high-current connection structure according to claim 2, characterized in that: The pin member (21) is provided with a protective shell (24); the socket member (22) is wrapped with an insulating sleeve (23), and the insulating sleeve (23) is fixed on the housing (1); The end of the socket member (22) is provided with a split groove structure, and the split groove structure is connected to the cable connection plug (5) via a cable connection socket (26).

4. The telescopic high-voltage and high-current connection structure according to claim 2, characterized in that: The driving mechanism (3) comprises a motor (31), and the motor (31) is connected to a moving component (33) via a transmission mechanism (32); the connector plug (4) is arranged on the moving component (33); The movable assembly (33) comprises a first movable plate (335), one end of a guide rod (333) being connected to the first movable plate (335), the other end of the guide rod (333) passing through the first support frame (331) and the second support frame (332) in sequence, and being connected to the second movable plate (334); the connector plug (4) is embedded in a middle mounting hole of the second movable plate (334), and is connected to the second movable plate (334) by means of bolts; the bottoms of the first support frame (331) and the second support frame (332) are mounted on the housing (1); Two transmission racks (336) are connected between the first movable plate (335) and the second movable plate (334), and the two transmission racks (336) are connected to the transmission mechanism (32).

5. The telescopic high-voltage and high-current connection structure according to claim 4, characterized in that: The transmission mechanism (32) comprises a worm (321), the two ends of the worm (321) are respectively movably connected to the first support frame (331) and the second support frame (332), one end of the worm (321) is transmission-connected to the motor (31), and the motor (31) is mounted on the bottom of the housing (1); the top of the worm (321) is transmission-connected to a worm wheel (322), the two ends of a transmission shaft (323) at the center of the worm wheel (322) are respectively movably connected to two shaft seats (324), and the two shaft seats (324) are mounted on the second support frame (332); two transmission gears (325) are arranged on the transmission shaft (323), and the two transmission gears (325) are respectively meshed and connected with the two transmission racks (336).

6. The telescopic high-voltage and high-current connection structure according to claim 5, characterized in that: The worm (321) is also provided with a first bevel gear (327), the first bevel gear (327) is meshedly connected with a second bevel gear (328), and the center of the second bevel gear (328) is connected with a manual input shaft (329).

7. The telescopic high-voltage and high-current connection structure according to claim 3, characterized in that: The material of the insulating sleeve (23) is PPS; the wall thickness of the insulating sleeve (23) is not less than 12.5 mm.

8. The telescopic high-voltage and high-current connection structure according to any one of claims 2 to 6, characterized in that: A forward limit sensor (6) and a backward limit sensor (7) are also provided in the housing (1).

9. The telescopic high-voltage and high-current connection structure according to any one of claims 2 to 6, characterized in that: The material of the socket part (22) is copper, and the surface of the copper is silver-plated.

10. The telescopic high-voltage and high-current connection structure according to any one of claims 2 to 6, characterized in that: The diameter of the pin member (21) is not less than 10 mm; the length of the pin member (21) and the depth of the plug hole are not less than 50 mm.

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