A power transmission device and retractable data line

Abstract

The application discloses a power transmission device, which comprises a power transmission shaft and a power transmission carrier, the power transmission shaft comprises a power transmission shaft core, at least one power transmission shaft sleeve and a first insulator, the power transmission carrier comprises a second insulator and at least two electrically conductive leads, the second insulator is provided with at least one inner convex edge, the power transmission carrier is assembled with the power transmission shaft, one of the electrically conductive leads contacts the power transmission shaft core, one of the electrically conductive leads contacts one of the power transmission shaft sleeves, and the two electrically conductive leads are provided with the inner convex edge, so that the electrically conductive leads are stably connected with the power transmission shaft core and the power transmission shaft sleeve. The application further discloses a telescopic data line, which comprises the power transmission device, a power output device and a winding assembly, the power output device comprises a wire and an interface, the connection part of the wire and the interface is provided with a hook, the wire is internally provided with a plurality of conductors and a bulletproof wire, and the hook hooks the bulletproof wire.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of electric transmission products, and particularly relates to an electric transmission device and a telescopic data line. BACKGROUND

[0002] In order to develop an electric conduction device capable of achieving stable input and output current during rotation and having a long service life, the applicant has applied for a patent for an electric conduction device with application number 202320864487.2.

[0003] However, during product testing, it was found that the electric conduction device described above easily slips onto the insulating shaft during rotation and electric transmission, that is, it easily produces a skidding phenomenon, resulting in poor contact and thus failing to achieve normal electric conduction. SUMMARY

[0004] In order to solve the above problems, the present application provides an electric transmission device and a telescopic data line.

[0005] The technical solution of the present application is as follows:

[0006] In order to solve the problem that the existing electric conduction device easily slips and misplaces during rotation and electric conduction, resulting in failure to achieve normal electric conduction, an electric transmission device is disclosed, comprising:

[0007] An electric transmission shaft, the electric transmission shaft comprising an electric transmission shaft core, at least one electric transmission shaft sleeve, and a first insulator, when there is only one electric transmission shaft sleeve, the electric transmission shaft sleeve is sleeved on the electric transmission shaft core, and the first insulator is filled between the electric transmission shaft core and the electric transmission shaft sleeve, when there are two electric transmission shaft sleeves, a first electric transmission shaft sleeve is sleeved on the electric transmission shaft core, and a second electric transmission shaft sleeve is sleeved on the first electric transmission shaft sleeve, and the first insulator is filled between the electric transmission shaft core and the first electric transmission shaft sleeve and between the first electric transmission shaft sleeve and the second electric transmission shaft sleeve;

[0008] An electric transmission carrier, the electric transmission carrier comprising a second insulator and at least two electrically conductive leads, the second insulator being provided with at least one inner convex edge, and the electrically conductive leads being spaced apart on the second insulator, and one inner convex edge being provided between two electrically conductive leads;

[0009] The electric transmission carrier and the electric transmission shaft are assembled and cooperated, and one electrically conductive lead contacts the electric transmission shaft core, and one electrically conductive lead contacts the corresponding electric transmission shaft sleeve.

[0010] Further implementation, when the power transmission device is designed as an extendable data line, the power transmission device further comprises a connecting seat, the connecting seat comprises a third insulator and at least two power transmission parts, one end of one of the power transmission parts is connected with the power transmission shaft core, one end of another of the power transmission parts is connected with the power transmission shaft sleeve, and the third insulator is filled in the connecting part of the power transmission part and the power transmission shaft core and the power transmission shaft sleeve.

[0011] Further, when two power transmission shaft sleeves are provided, the two power transmission shaft sleeves are respectively a first power transmission shaft sleeve and a second power transmission shaft sleeve, the first power transmission shaft sleeve is provided with a slot, and the second power transmission shaft sleeve is provided with a clamping position, and the first insulator fills the slot and the clamping position.

[0012] Further, the second insulator is provided with a plurality of symmetrical slots, one of the electrical leads is arranged in a corresponding one of the symmetrical slots, the symmetrical slots divide the electrical lead into an inner contact part and an outer contact part, the inner contact part is located on the inner wall of the second insulator, and the inner contact part is in contact with the power transmission shaft core and the power transmission shaft sleeve of the power transmission shaft, and the outer contact part is located on the outer wall of the second insulator.

[0013] Further, one side of the symmetrical slot is provided with a plurality of protruding columns, the protruding columns define the position of the power supply output device electrically connected with the outer contact part, when the power supply output device is a wire, the inside of the wire is provided with a plurality of wires, the plurality of wires are connected with the outer contact part, and each wire is spaced apart by the protruding columns, so as to prevent the wires from being entangled, a bayonet is further arranged in the middle of the symmetrical slot, and the outer contact part is provided with a protrusion, the protrusion is clamped into the bayonet.

[0014] Further, the second insulator is provided with a notch, and the notch is located on the side of the inner contact part.

[0015] In addition, the application further discloses an extendable data line, which needs to solve the problem of tensile force of the extendable data line, that is, when the extendable data line is used as a part of a power socket, the problem of easy breakage of the data line when the data line is violently pulled is prevented,

[0016] The extendable data line comprises the power transmission device,

[0017] a power supply output device, the power supply output device is electrically connected with the outer contact part;

[0018] a winding assembly, the winding assembly comprises an elastic device and a clamping position device, the elastic device is connected with the connecting seat, the clamping position device is connected with the power transmission shaft, the power supply output device is connected with the power transmission carrier, and the power supply output device is arranged between the elastic device and the clamping position device.

[0019] The power output device comprises a wire and an interface, a hook is arranged at the connection between the wire and the interface, a plurality of conductors and bulletproof wires are arranged in the wire, and the hook hooks the bulletproof wires.

[0020] Further, in order to realize the stretching of the data line, the elastic device comprises a first rotating disc, a first elastic member and a clamping ring, the center hole of the first rotating disc is arranged in the power transmission shaft, a cylinder is arranged on the first rotating disc, a round hole and a groove are arranged on the clamping ring, the cylinder clamps the round hole, the first elastic member and the clamping ring are arranged on the same side of the first rotating disc, one end of the first elastic member is arranged around the outer wall of the connecting seat, and the other end of the first elastic member clamps the groove.

[0021] Further, in order to realize that the data line can be stretched to different length states, the clamping device comprises a second rotating disc, a connecting hole and a connecting piece are arranged on the second rotating disc and the second insulator respectively, the connecting piece is arranged in the connecting hole, a through hole is further arranged on the second rotating disc, the through hole is sleeved on the power transmission shaft core, the power output device clamps the first rotating disc and the second rotating disc, and the power transmission carrier and the power output device are located between the first rotating disc and the second rotating disc.

[0022] Further, a clamping head is arranged on the power output device, one end of the clamping head is clamped into the notch of the second insulator, holes are arranged on the first rotating disc and the second rotating disc respectively, and the other end of the clamping head is clamped into the holes.

[0023] The beneficial effects of the present application are as follows:

[0024] In order to solve the problem that the existing conductive device is prone to slipping and mispositioning during rotation and thus cannot conduct electricity normally, the power transmission shaft and the power transmission carrier of the power transmission device are redesigned, the power transmission shaft comprises a power transmission shaft core, at least one power transmission shaft sleeve and a first insulator, the power transmission carrier comprises a second insulator and at least two electrically conductive leads, at least one inner protruding edge is arranged on the second insulator, the power transmission carrier is clamped on the power transmission shaft, one of the electrically conductive leads contacts the power transmission shaft core, one of the electrically conductive leads contacts the corresponding power transmission shaft sleeve, the inner protruding edge separates the electrically conductive leads, and the inner protruding edge is aligned with the first insulator, and the inner protruding edge can effectively prevent the electrically conductive leads from being displaced onto the first insulator. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of the first scheme of the power transmission device of the present application.

[0026] Figure 2This is a schematic diagram of the overall structure of a second embodiment of a power transmission device according to the present invention;

[0027] Figure 3 This is an exploded structural diagram of the power transmission shaft of a power transmission device according to the present invention.

[0028] Figure 4 This is a schematic cross-sectional view of the power transmission shaft of a power transmission device according to the present invention.

[0029] Figure 5 This is a schematic diagram of the connection between the power transmission shaft and the power transmission part of a power transmission device according to the present invention;

[0030] Figure 6 This is an exploded structural diagram of the power transmission carrier of a power transmission device according to the present invention.

[0031] Figure 7 This is an exploded view of the retractable data cable of the present invention;

[0032] Figure 8 This is a schematic cross-sectional view of the cable structure of a retractable data cable according to the present invention.

[0033] Figure 9 This is a schematic diagram of the connector structure of a retractable data cable according to the present invention;

[0034] Figure 10 This is a schematic diagram of the overall structure of a retractable data cable according to the present invention. Figure 1 ;

[0035] Figure 11 This is a schematic diagram of the overall structure of a retractable data cable according to the present invention. Figure 2 ;

[0036] Figure 12 This is a schematic diagram of the structure of a retractable data cable as a travel charger according to the present invention;

[0037] Figure 13 This is a schematic diagram of the structure of a retractable data cable of the present invention, which is a unidirectional retractable data cable with interfaces on both ends;

[0038] Figure 14 This is a schematic diagram of the structure of a retractable data cable as a socket according to the present invention;

[0039] Figure 15 for Figure 14 A schematic diagram of the retractable data cable inside the socket;

[0040] A, power transmission device, 1, power transmission shaft, 11, power transmission shaft core, 12, power transmission shaft sleeve, 121, first power transmission shaft sleeve, 1211, slot, 122, second power transmission shaft sleeve, 1221, clamping position, 13, first insulator, 2, power transmission carrier, 21, second insulator, 211, inner flange, 212, symmetrical slot, 213, protruding column, 214, notch, 215, bayonet, 22, electrical lead-out piece, 221, inner contact, 222, outer contact, 223, protrusion, 3, connecting seat, 31, third insulator, 32, power transmission part, B, telescopic charging line, 4, power input device, 5, power output device, 51, clamping head, 6, winding assembly, 61, elastic device, 611, first turntable, 6111, center, 6112, cylinder, 612, first elastic piece, 613, clamping ring, 6131, circular hole, 6132, groove, 62, clamping position device, 621, second turntable, 6211, connecting hole, 6212, connecting piece, 6213, through hole, 622, gear, 623, swing arm, 624, second elastic piece, 7, wire, 71, conductor, 72, anti-bounce wire, 8, interface, 81, hook, 9, hole position. DETAILED DESCRIPTION

[0041] In order to make the technical problems to be solved by the present application, technical solutions and beneficial effects more clearly understood, the present application will be further described in detail below in conjunction with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and not to limit the present application.

[0042] It should be noted that when an element is referred to as being "mounted on", "provided on", "covered on", "sleeved on", "clamped on" another element, it can be directly on the other element or indirectly on the other element.

[0043] It should be understood that in the description of the present application, the meaning of "several" is two or more than two, unless otherwise explicitly and specifically limited.

[0044] In addition, the terms "inner", "upper", "between", "two sides", "one side", "top", "bottom", "side" and the like indicate the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0045] It should be noted that the terms "first", "second", "third", etc. are used only for descriptive purposes and cannot be understood to indicate or imply relative importance or imply the number of the technical features indicated. Therefore, the features defined with "first", "second", "third", etc. can explicitly or implicitly include one or more of the features.

[0046] It should be noted that "and / or" herein only describes the association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B, which can represent the three cases of A alone, A and B together, and B alone. Wherein, A and B can be singular or plural.

[0047] In order to solve the problem that the existing conductive device is easy to slip and misposition during rotation and conduct, thereby causing the problem of normal conduction, the application discloses a power transmission device A, which is a product capable of rotating to take power, such as: a one-way telescopic data line, a travel charger provided with a telescopic data line, a power socket provided with a telescopic data line, a fascia gun and a massage head thereof, etc. Figure 1 It comprises:

[0048] The power transmission shaft 1 comprises a power transmission shaft core 11, at least one power transmission shaft sleeve 12 and a first insulator 13. When there is only one power transmission shaft sleeve 12, the power transmission shaft sleeve 12 is sleeved on the power transmission shaft core 11, and the first insulator 13 is filled between the power transmission shaft core 11 and the power transmission shaft sleeve 12. When there are two power transmission shaft sleeves 12, the first power transmission shaft sleeve 12 is sleeved on the power transmission shaft core 11, and the second power transmission shaft sleeve 12 is sleeved on the first power transmission shaft sleeve 12. The first insulator 13 is filled between the power transmission shaft core 11 and the first power transmission shaft sleeve 12 and between the first power transmission shaft sleeve 12 and the second power transmission shaft sleeve 12.

[0049] The power transmission carrier 2 comprises a second insulator 21 and at least two electrical leads 22. The second insulator 21 is provided with at least one inner convex edge 211, and the electrical leads 22 are spaced apart on the second insulator 21. One inner convex edge 211 is arranged between two electrical leads 22.

[0050] The power transmission carrier 2 is assembled with the power transmission shaft 1, one electrical lead 22 contacts the power transmission shaft core 11, one electrical lead 22 contacts the corresponding power transmission shaft sleeve 12, the inner convex edge 211 separates the electrical leads 22, and the inner convex edge 211 is aligned with the first insulator 13. The inner convex edge 211 can effectively prevent the electrical leads 22 from being displaced onto the first insulator 13.

[0051] The transmission electricity shaft core 11 can be connected to the positive pole of the power supply, and the transmission electricity shaft sleeve 12 can be connected to the negative pole of the power supply. Generally, one transmission electricity shaft core 11 and one transmission electricity shaft sleeve 12 can realize electricity conduction. However, for some products, one more transmission electricity shaft sleeve 12 can be added, and the added transmission electricity shaft sleeve 12 can be connected to a signal line to transmit a fast charging protocol, so as to accelerate the charging speed and realize the fast charging function.

[0052] The following will take the transmission electricity device A for realizing ordinary charging and the transmission electricity device A for realizing fast charging as examples to respectively describe the specific structures in the cases of setting different numbers of transmission electricity shaft sleeves 12.

[0053] The transmission electricity shaft 1 comprises the transmission electricity shaft core 11, the transmission electricity shaft sleeve 12 and the first insulator 13. The transmission electricity carrier 2 comprises the second insulator 21 and the two electrically conductive leads 22. The inner protruding edge 211 is arranged between the two electrically conductive leads 22. When the transmission electricity carrier 2 is assembled with the transmission electricity shaft 1, one electrically conductive lead 22 is in contact with the transmission electricity shaft core 11, and the other electrically conductive lead 22 is in contact with the transmission electricity shaft sleeve 12. The inner protruding edge 211 separates the two electrically conductive leads 22, and the inner protruding edge 211 is opposite to the first insulator 13. The first insulator 13 is filled between the transmission electricity shaft core 11 and the transmission electricity shaft sleeve 12 in the mode of injection molding. The transmission electricity shaft sleeve 12 is in the shape of a cylinder. The transmission electricity shaft core 11 is connected to the positive pole, and the transmission electricity shaft sleeve 12 is connected to the negative pole. The second insulator 21 is provided with two symmetrical grooves 212. One electrically conductive lead 22 is arranged in one symmetrical groove 212. The symmetrical groove 212 separates the electrically conductive lead 22 into the inner contact part 221 and the outer contact part 222. The inner contact part 221 is located on the inner wall of the second insulator 21, and the inner contact part 221 is in contact with the transmission electricity shaft core 11 and the transmission electricity shaft sleeve 12 of the transmission electricity shaft 1. The outer contact part 222 is located on the outer wall of the second insulator 21, and the power supply output device 5 is electrically connected to the outer contact part 222. The transmission electricity part 32 is electrically connected to the transmission electricity shaft core 11 and the transmission electricity shaft sleeve 12 exposed on the other end of the transmission electricity shaft 1.

[0054] Referring to Figure 1 , Figure 3- Figure 6, the power transmission shaft 1 comprises a power transmission shaft core 11, two power transmission shaft sleeves 12 and a first insulator 13, the two power transmission shaft sleeves 12 are respectively a first power transmission shaft sleeve 121 and a second power transmission shaft sleeve 122, when the first insulator 13 is injection filled, the first power transmission shaft sleeve 121 is sleeved on the power transmission shaft core 11, the second power transmission shaft sleeve 122 is sleeved on the first power transmission shaft sleeve 121, the first power transmission shaft sleeve 121 is provided with a slot 1211, the second power transmission shaft sleeve 122 is provided with a clamping position 1221, the first insulator 13 fills the slot 1211 and the clamping position 1221, that is, the slot 1211 is designed to enable the first insulator 13 to enter the gap between the power transmission shaft 1 and the first power transmission shaft sleeve 121, and the clamping position 1221 is designed to enable the first insulator 13 to fix the second power transmission shaft sleeve 122 on the first power transmission shaft sleeve 121; the power transmission carrier 2 comprises a second insulator 21 and three electrical leads 22, the second insulator 21 is provided with two inner convex edges 211, and there is one of the inner convex edges 211 between the two electrical leads 22; when the power transmission carrier 2 is assembled with the power transmission shaft 1, the first electrical lead 22 is in contact with the power transmission shaft core 11, the second electrical lead 22 is in contact with the first power transmission shaft sleeve 121, the third electrical lead 22 is in contact with the second power transmission shaft sleeve 122, the inner convex edge 211 separates the two electrical leads 22, and the inner convex edge 211 is opposite to the first insulator 13; the second insulator 21 is provided with three symmetrical slots 212, one of the electrical leads 22 is arranged in one of the symmetrical slots 212, the symmetrical slots 212 divide the electrical lead 22 into an inner contact part 221 and an outer contact part 222, the inner contact part 221 is located on the inner wall of the second insulator 21, and the inner contact part is in contact with the power transmission shaft core, the first power transmission shaft sleeve and the second power transmission shaft sleeve of the power transmission shaft, the outer contact part 222 is located on the outer wall of the second insulator 21, and the power supply output device 5 is electrically connected with the outer contact part 222, and the power transmission part 32 is electrically connected with the power transmission shaft core 11 and the power transmission shaft sleeve 12 exposed on the other end of the power transmission shaft 1.

[0055] By analogy, when the power transmission shaft sleeve 12 is provided with three, the third power transmission shaft sleeve is arranged above the second power transmission shaft sleeve and then the first insulator 13 is injection filled, so that each power transmission shaft sleeve 12 is connected with one action line, and the third power transmission shaft sleeve can be connected with one more signal line to transmit different protocols and realize faster charging speed.

[0056] Further, in order to make the electrical lead 22 more firmly assembled with the second insulator 21, referring to Figure 6 , the symmetrical slot 212 is further provided with a clamping opening 215, and the outer contact part 222 is provided with a protrusion 223, the protrusion 223 is clamped into the clamping opening 215.

[0057] Referring to Figure 1 , Figure 2 and Figure 6 , when the power transmission device A is applied to the one-way telescopic data line, the travel charger provided with the telescopic data line and the power socket provided with the telescopic data line, the power transmission carrier 2 is in the shape of a pie-shaped weight, which is more convenient to assemble;

[0058] It is worth noting that when the power transmission device A is applied to the fascia gun and the massage head thereof, the shape of the power transmission carrier 2 can also be designed as a cylindrical shape, and the power transmission shaft 1 is directly inserted into the power transmission carrier 2.

[0059] The power output device 5 described above can be a data line or a massage head. When the power output device 5 is a data line, referring to Figure 7 , the wire on the data line is connected with the electrically conductive part 222; when the power output device 5 is a massage head, the power transmission carrier 2 is directly built into the massage head, and the electrically conductive design in the massage head is electrically connected with the outer contact part 222; the power transmission part 32 described above is an electrically conductive wire.

[0060] When the power transmission device A is designed as a telescopic data line, in order to realize the telescopic function of the data line and better connect the power supply, referring to Figure 2 , the power transmission device A further comprises a connecting seat 3, the connecting seat 3 comprises a third insulating body 31 and at least two power transmission parts 32, the number of the power transmission parts 32 is designed to be the same as that of the electrically conductive part 222, when there are only two power transmission parts 32, one end of one of the power transmission parts 32 is connected with the power transmission shaft core 11, and one end of the other power transmission part 32 is connected with the power transmission shaft sleeve 12; when there are three power transmission parts 32, one end of the first power transmission part 32 is connected with the power transmission shaft core 11, one end of the second power transmission part 32 is connected with the first power transmission shaft sleeve 121, and one end of the third power transmission part 32 is connected with the second power transmission shaft sleeve 122; the third insulating body 31 is filled in the connection position of the power transmission part 32 and the power transmission shaft core 11 and the power transmission shaft sleeve 12, the other end of the power transmission part 32 is connected with the power supply input device 4, and the first insulating body 13 and the third insulating body 31 are an integral structure formed by two-time injection molding, referring to Figure 2 and Figure 6 , the power transmission part 32 is an electrically conductive wire, and the connecting seat 3 after injection molding is provided with three holes, which are reserved for the electrically conductive wire.

[0061] Referring to Figure 6 , one side of the symmetrical slot 212 is provided with four protruding columns 213, the protruding columns 213 are used to limit the position of the power output device 5 electrically connected with the outer contact part 222, referring to Figure 7When the power output device 5 is a wire, the inside of the wire is provided with three wires, the three wires are connected with the outer contact 222, and each wire is spaced apart by the convex column 213, so as to prevent the wires from being wound.

[0062] Further, the second insulator 21 is provided with a notch 214, that is, a pie-shaped shape is formed, so as to better assemble the telescopic data line, the notch 214 is located at the side of the inner contact 221, when the power transmission device is used as a telescopic data line, referring to Figure 7 The wire has a corresponding shape designed to block the notch 214, preventing the power transmission shaft 1 from being separated from the power transmission carrier 2.

[0063] In addition, the problem of tensile force of the telescopic data line needs to be solved, that is, when the telescopic data line is used as part of the power socket, the problem of preventing violent pulling of the data line from causing the data line to easily break needs to be solved.

[0064] Referring to Figures 7-11 The application also discloses a telescopic data line B, comprising:

[0065] The above-mentioned power transmission device A,

[0066] A power output device 5, the power output device 5 is electrically connected with the outer contact 222;

[0067] A winding assembly 6, the winding assembly 6 comprises an elastic device 61 and a detent device 62, the elastic device 61 is connected with the connecting seat 3, the detent device 62 is connected with the power transmission shaft 1, the power output device 5 is connected with the power transmission carrier 2, and the power output device 5 is arranged between the elastic device 61 and the detent device 62;

[0068] The power output device 5 comprises a wire 7 and an interface 8, the connection between the wire 7 and the interface 8 is provided with a hook 81, the wire 7 is provided with a plurality of conductors 71 and a bulletproof silk 72, the hook 81 hooks the bulletproof silk 72, the conductor 71 can form a wire, and the wire can be a positive wire, a negative wire or a signal wire.

[0069] The above-mentioned interface 8 can be a MicroUSB interface or a Type-C interface or a Lightning interface, the bulletproof silk 72 is mainly made of polyarylate fiber, has high tensile strength, high moisture absorption (does not absorb water), stable size, good heat resistance, wear resistance, cutting resistance, acid resistance, impact resistance and excellent flame resistance, and is widely used in optical fiber cables and wire cables for filling and reinforcing, therefore, the bulletproof silk can also be used in the data line.

[0070] The telescopic data line B mainly has two cases, one is that both ends of the telescopic data line are interfaces, that is, the existing telescopic data line has a MicroUSB interface at one end and a Type-C interface at the other end; the second is that one end of the telescopic data line is connected with the power circuit board, and the other end of the telescopic data line is an interface, that is, a socket or a travel charger with a telescopic data line, in this case, the power input device does not have an interface.

[0071] Further, in order to realize the telescopic data line and solve the problem that the first elastic member 612 is easy to rub against the first rotating disc 611, the specific structure of the improved design is described in the patent with the patent number 2023208665436.

[0072] The elastic device 61 includes a first rotating disc 611, a first elastic member 612, and a clamping ring 613. The structure of fixing the first elastic member 612 is improved into a split type, that is, it is divided into the first rotating disc 611 and the clamping ring 613. The center hole 6111 of the first rotating disc 611 is inserted into the power transmission shaft 1. The first rotating disc 611 is provided with a cylinder 6112. The clamping ring 613 is provided with a round hole 6131 and a groove 6132. The cylinder 6112 clamps the round hole 6131. The first elastic member 612 and the clamping ring 613 are located on the same side of the first rotating disc 611. One end of the first elastic member 612 is wound around the outer wall of the connecting seat 3. The other end of the first elastic member 612 is clamped in the groove 6132.

[0073] Further, in order to realize the telescopic data line and solve the problem that the first elastic member 612 is easy to rub against the first rotating disc 611, the specific structure of the improved design is described in the patent with the patent number 2023208665436.

[0074] However, in the previous design, it cannot be guaranteed that the first rotating disc 611, the power transmission carrier 2, and the second rotating disc 621 rotate together, that is, the connection between them is not firm enough. The clamping device 62 includes a second rotating disc 621. The second rotating disc 621 and the second insulator 21 are respectively provided with a connecting hole 6211 and a connecting piece 6212. The connecting piece 6212 is inserted into the connecting hole 6211. The second rotating disc 621 is further provided with a through hole 6213, which is sleeved on the end of the power transmission shaft core 11 of the power transmission shaft 1. The power output device 5 clamps the first rotating disc 611 and the second rotating disc 621. The power transmission carrier 2 and the power output device 5 are located between the first rotating disc 611 and the second rotating disc 621.

[0075] Further, the power output device 5 is provided with a clamping head 51, that is, the wire is provided with the clamping head 51, one end of the clamping head 51 is clamped into the notch 214 of the second insulator 21, the first rotating disc 611 and the second rotating disc 621 are respectively provided with a hole position 9, the other end of the clamping head 51 is clamped into the hole position 9, so as to prevent the power transmission shaft 1 from being separated from the power transmission carrier 2.

[0076] When the above telescopic data line is produced into corresponding products, the power transmission part 32 needs to be connected with the power input device 4, and the power input device 4 is connected with the other end of the power transmission part 32.

[0077] Referring to Figure 12 The power input device 4 can be a power plug in a travel charger, referring to Figure 13 The power input device 4 can be a data line or a charging line with an interface, referring to Figure 14 And Figure 15 The power input device 4 can be a circuit component connected with a power supply in a socket, that is, the current is first guided to the power transmission shaft core 11, the power transmission shaft core 11 transmits the current to the power transmission carrier 2, the power transmission carrier 2 outputs the current, and the power transmission carrier 2 can rotate around the power transmission shaft core 11, so that the power output device 5 connected with the power transmission carrier 2 can also rotate with the power transmission carrier 2.

[0078] The above embodiment only expresses one embodiment of the present application, and the description is more specific and detailed, but it cannot be understood as a limitation on the scope of the present application. It should be noted that for ordinary skilled persons in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which are all within the protection scope of the present application. Therefore, the protection scope of the present application patent should be subject to the appended claims.

Claims

1. A power transmission device, characterized in that, include: A power transmission shaft (1) includes a power transmission shaft core (11), two power transmission shaft sleeves (12), and a first insulator (13). The two power transmission shaft sleeves (12) are a first power transmission shaft sleeve (121) and a second power transmission shaft sleeve (122). The first power transmission shaft sleeve (121) is sleeved on the power transmission shaft core (11), and the second power transmission shaft sleeve (122) is sleeved on the first power transmission shaft sleeve (121). The first insulator (13) fills the space between the power transmission shaft core (11) and the first power transmission shaft sleeve (121) and between the first power transmission shaft sleeve (121) and the second power transmission shaft sleeve (122). The first power transmission shaft sleeve (121) has a slot (1211), and the second power transmission shaft sleeve (122) has a locking position (1221). The first insulator (13) fills the slot (1211) and the locking position (1221). The power carrier (2) includes a second insulator (21) and three electrical leads (22). The second insulator (21) has two inner protrusions (211). The electrical leads (22) are spaced apart on the second insulator (21). An inner protrusion (211) is provided between two adjacent electrical leads (22). The inner protrusion (211) is aligned with the first insulator (13). The power carrier (2) is assembled with the power shaft (1), and the first electrical lead-out (22) contacts the power shaft core (11), the second electrical lead-out (22) contacts the first power shaft sleeve (121), and the third electrical lead-out (22) contacts the second power shaft sleeve (122).

2. The power transmission device according to claim 1, characterized in that, It also includes a connector (3), which includes a third insulator (31) and three conductive parts (32). One end of the first conductive part (32) is connected to the conductive shaft core (11), one end of the second conductive part (32) is connected to the first conductive bushing (121), and one end of the third conductive part (32) is connected to the second conductive bushing (122). The third insulator (31) fills the connection position between the conductive part (32) and the conductive shaft core (11) and the conductive bushing (12).

3. The power transmission device according to claim 2, characterized in that, The second insulator (21) is provided with a plurality of symmetrical slots (212), and an electrical lead (22) is disposed in a corresponding symmetrical slot (212). The symmetrical slot (212) divides the electrical lead (22) into an inner contact (221) and an outer contact (222). The inner contact (221) is located on the inner wall of the second insulator (21), and the outer contact (222) is located on the outer wall of the second insulator (21).

4. The power transmission device according to claim 3, characterized in that, The symmetrical slot (212) is provided with a bayonet (215) in the middle, the outer contact part (222) is provided with a protrusion (223), and a number of protruding posts (213) are provided on one side of the symmetrical slot (212). The protrusion (223) is inserted into the bayonet (215).

5. The power transmission device according to claim 4, characterized in that, The second insulator (21) has a notch (214) located on the side of the inner contact (221).

6. A retractable data cable, comprising the power transmission device as described in claim 5, characterized in that, Also includes: A power output device (5) is electrically connected to the external contact (222); The winding assembly (6) includes an elastic device (61) and a locking device (62). The elastic device (61) is connected to the connecting seat (3), the locking device (62) is connected to the power transmission shaft (1), and the power output device (5) is connected to the power transmission carrier (2). The power output device (5) is located between the elastic device (61) and the locking device (62). The power output device (5) includes a wire (7) and an interface (8). A hook (81) is provided at the connection between the wire (7) and the interface (8). The wire (7) contains a plurality of conductors (71) and bulletproof wires (72). The hook (81) hooks the bulletproof wires (72).

7. The retractable data cable according to claim 6, characterized in that, The elastic device (61) includes a first turntable (611), a first elastic element (612), and a snap ring (613). The central hole (6111) of the first turntable (611) passes through the electric shaft (1). A cylinder (6112) is provided on the first turntable (611). A circular hole (6131) and a groove (6132) are provided on the snap ring (613). The cylinder (6112) snaps into the circular hole (6131). The first elastic element (612) and the snap ring (613) are both provided on the same side of the first turntable (611). One end of the first elastic element (612) is wrapped around the outer wall of the connecting seat (3), and the other end of the first elastic element (612) snaps into the groove (6132).

8. The retractable data cable according to claim 7, characterized in that, The positioning device (62) includes a second turntable (621). The second turntable (621) and the second insulator (21) are respectively provided with a connecting hole (6211) and a connector (6212). The connector (6212) passes through the connecting hole (6211). The second turntable (621) is also provided with a through hole (6213). The through hole (6213) is fitted onto the power transmission shaft (11). The power output device (5) is engaged with the first turntable (611) and the second turntable (621). The power transmission carrier (2) and the power output device (5) are both located between the first turntable (611) and the second turntable (621).

9. The retractable data cable according to claim 8, characterized in that, The power output device (5) is provided with a snap-fit ​​head (51). One end of the snap-fit ​​head (51) is snapped into the notch (214) of the second insulator (21). The first turntable (611) and the second turntable (621) are respectively provided with holes (9). The other end of the snap-fit ​​head (51) is snapped into the hole (9).

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