Electricity conversion structure and winder

Abstract

The utility model provides an electric conversion structure and a winder. The electric conversion structure comprises a fixed base; the fixed conducting ring is arranged on the fixed base in a sleeving mode, the fixed conducting ring is provided with a first wiring part and a guide groove, the first wiring part is used for being connected with an input line so that the fixed conducting ring can be electrically connected with the input line, then the fixed conducting ring can be connected with an external power source, and the guide groove is formed around the axial center line of the fixed conducting ring; the movable base is rotatably arranged on the fixed base in a sleeving manner; the movable conductive elastic piece is connected with the movable base and located between the movable base and the fixed conductive ring, at least part of the movable conductive elastic piece is rotatably arranged in the guide groove and abuts against the groove bottom of the guide groove, the movable conductive elastic piece is provided with a second wiring part, and the second wiring part is used for being connected with an output line. According to the invention, the movable conductive elastic member always abuts against the groove bottom of the guide groove, so that the movable conductive elastic member is ensured to be in good contact with the fixed conductive ring, and the problem of tripping can be effectively avoided.

Description

Technical Field

[0001] The present application relates to a conversion structure, and more particularly to an electric conversion structure and a cable reel. Background Art

[0002] Automatic retractable cable reels usually have an input and an output. The input is not retractable, while the output can wind different lengths of wires according to the specifications of the wires. When in use, the user can freely stretch the wire to the desired length. The reel is equipped with a self-locking device. When the wire is stretched to a certain length, the self-locking device will lock the wire to prevent it from extending further. To retract the wire, the user needs to first pull out a small section of the wire so that the wire passes the self-locking device, and then the wire will automatically retract under the action of the spring force and be neatly rolled into the reel.

[0003] At present, the input end and the output end of the automatic retractable reel on the market are conductively connected through an electric conversion structure. The electric conversion structure includes a fixed copper ring and a moving copper ring. The fixed copper ring is connected to the input end, and the moving copper ring is connected to the output end. The moving copper ring is rotatably mounted on the outer ring of the fixed copper ring. However, in actual applications, the electric conversion structure composed of the fixed copper ring and the moving copper ring often has power outage problems. Utility Model Content

[0004] The embodiment of the present application provides an electric conversion structure and a cable reel to solve the problems existing in the related art. The technical solution is as follows:

[0005] In a first aspect, an embodiment of the present application provides an electrical conversion structure, including:

[0006] Fixed base;

[0007] A fixed conductive ring, the fixed conductive ring is sleeved on the fixed base, the fixed conductive ring is provided with a first wiring portion and a guide groove, the first wiring portion is used to connect with the input line, and the guide groove is arranged around the axial center line of the fixed conductive ring;

[0008] A movable base, the movable base being rotatably sleeved on the fixed base;

[0009] A dynamic conductive elastic member, which is connected to the dynamic base and is located between the dynamic base and the fixed conductive ring. At least part of the dynamic conductive elastic member is rotatably disposed in the guide groove and abuts against the bottom of the guide groove. A second wiring portion is provided on the dynamic conductive elastic member, and the second wiring portion is used to connect to the output line.

[0010] In one embodiment, the dynamic conductive elastic member comprises:

[0011] Two elastic arms, the first ends of the two elastic arms are connected, the second ends of the two elastic arms are set apart, the two elastic arms are placed on both sides of the fixed conductive ring, and the second ends of the elastic arms are provided with abutment parts, and the abutment parts abut against the bottom of the guide groove.

[0012] In one embodiment, the dynamic conductive elastic member further comprises:

[0013] A connecting portion, wherein the connecting portion is located between the first ends of the two elastic arms and connects the first ends of the two elastic arms, and the connecting portion is connected to the moving base.

[0014] In one embodiment, a first slot is provided on the dynamic base, and the first slot is adapted to the connecting portion to connect the dynamic base and the dynamic conductive elastic member together.

[0015] In one embodiment, the electrical conversion structure further comprises:

[0016] A fixing member is disposed in the dynamic base, and the fixing member connects the first end of the elastic arm and the connecting portion to limit the dynamic conductive elastic member from being separated from the dynamic base.

[0017] In one embodiment, the first slot passes through the outer side wall of the dynamic base;

[0018] The second wiring portion is connected to the connecting portion, and the second wiring portion passes through the first clamping groove and out of the dynamic base.

[0019] In one embodiment, a positioning portion is provided on the elastic arm, the positioning portion is spaced apart from the fixed conductive ring, and the positioning portion is used to keep the abutting portion in abutment with the bottom of the guide groove;

[0020] The movable base is provided with a limiting groove, which is arranged around the guide groove. The limiting groove cooperates with the positioning portion so that the positioning portion and the fixed conductive ring maintain a clearance fit.

[0021] In one embodiment, the fixed base comprises:

[0022] A base body, wherein a connecting column and a first limiting protrusion are provided on the base body, wherein the first limiting protrusion is provided on a first end of the connecting column, and an outer diameter of the first limiting protrusion is greater than an inner diameter of the fixed conductive ring;

[0023] A limit cover, the limit cover and the base body are separately provided, the limit cover is located on the second end of the connecting column and is connected to the connecting column, and the outer diameter of the limit cover is larger than the inner diameter of the fixed conductive ring;

[0024] The fixed conductive ring is sleeved on the connecting column, the first end of the fixed conductive ring abuts against the first limiting protrusion, and the second end of the fixed conductive ring abuts against the limiting cover.

[0025] In one embodiment, the electrical conversion structure further comprises:

[0026] An insulating seat, wherein the insulating seat sleeve is arranged on the connecting column, and a first mounting portion and a second limiting protrusion are arranged on the insulating seat, wherein the first mounting portion is inserted into the central hole of the fixed conductive ring, and an end of the first mounting portion away from the second limiting protrusion can be abutted against the limiting cover, and an end of the second limiting protrusion away from the first mounting portion can be abutted against the first limiting protrusion, and a connecting groove is arranged in the second limiting protrusion, and the connecting groove is plug-matched with the first mounting portion on the other of the two adjacent insulating seats, and the two adjacent fixed conductive rings are separated from the first mounting portion by the second limiting protrusion;

[0027] And / or, the dynamic base comprises:

[0028] A first movable base, wherein second clamping grooves are provided on both circumferential sides of the first movable base;

[0029] A second moving base, the second moving base and the first moving base are arranged in sequence along the circumference of the moving base and surround the moving base, and both sides of the circumference of the second moving base are provided with snap-fitting protrusions, and the snap-fitting protrusions and the corresponding second snap-fitting grooves are snap-fitted to connect the first moving base and the second moving base together.

[0030] In a second aspect, an embodiment of the present application provides a cable reel including the above-mentioned electrical conversion structure.

[0031] The advantages or beneficial effects of the above technical solution include at least:

[0032] The electric conversion structure of the utility model connects the fixed conductive ring with the input line and makes at least part of the dynamic conductive elastic member abut against the groove bottom of the guide groove. When the input line is connected to an external power source, the output line can be electrically connected to the input line through the dynamic conductive elastic member abutting against the fixed conductive ring, thereby connecting the output line to the external power source. In particular, since the fixed conductive ring is provided with a guide groove, at least part of the dynamic conductive elastic member is rotatably arranged in the guide groove and abuts against the groove bottom of the guide groove. In the process that the dynamic conductive elastic member rotates following the dynamic base, the dynamic conductive elastic member always rotates along the circumferential direction of the fixed conductive ring under the guidance and limiting action of the guide groove, and the dynamic conductive elastic member is The dynamic conductive elastic part is connected to the dynamic base and is located between the dynamic base and the fixed conductive ring, so that the dynamic conductive elastic part always keeps in contact with the bottom of the guide groove, ensuring that the dynamic conductive elastic part is in good contact with the fixed conductive ring, thereby effectively avoiding problems such as electric shock and sparking; in addition, since the dynamic conductive elastic part is elastic, when the bottom of the guide groove is out of round, the dynamic conductive elastic part can still rotate smoothly along the guide groove and keep in contact with the bottom of the guide groove under the action of its own elastic force, the structural reliability is high, and the elastic dynamic conductive elastic part has less resistance to rotation along the guide groove, which can effectively avoid overheating and abnormal noise problems, and at the same time, the dynamic base can rotate smoothly.

[0033] The cable reel of the utility model can also effectively avoid the problems of power outages and sparks due to the adoption of the above-mentioned electrical conversion structure.

[0034] The above summary is for illustrative purposes only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments and features described above, further aspects, embodiments and features of the present application will be readily apparent by reference to the accompanying drawings and the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In the accompanying drawings, unless otherwise specified, the same reference numerals throughout the multiple drawings represent the same or similar parts or elements. These drawings are not necessarily drawn to scale. It should be understood that these drawings only depict some embodiments disclosed in the present application and should not be regarded as limiting the scope of the present application.

[0036] Figure 1 It is a three-dimensional structural schematic diagram of the electric conversion structure of the utility model;

[0037] Figure 2 It is a cross-sectional view of the electric conversion structure of the utility model at a first viewing angle;

[0038] Figure 3 is a cross-sectional view of the electric conversion structure of the utility model at a second viewing angle;

[0039] Figure 4 It is an exploded view of the electric conversion structure of the utility model;

[0040] Figure 5 It is a three-dimensional structural schematic diagram of a fixed conductive ring in the utility model;

[0041] Figure 6 It is a three-dimensional structural schematic diagram of the dynamic conductive elastic member in the utility model;

[0042] Figure 7 It is a three-dimensional structural schematic diagram of the wire reel of the utility model;

[0043] Figure 8 It is a cross-sectional view of the cable reel of the utility model;

[0044] Fig. 9 This is an exploded view of the cable reel of the present utility model.

[0045] Reference numerals

[0046] 1. Fixed base; 11. Base body; 111. Connecting column; 112. First limiting protrusion; 113. Connecting hole; 12. Limiting cover; 2. Fixed conductive ring; 21. First wiring part; 22. Guide groove; 3. Moving base; 31. First moving base; 311. Second clamping groove; 32. Second moving base; 321. Clamping protrusion; 33. First clamping groove; 34. Limiting groove; 4. Moving conductive elastic member; 41. Elastic arm; 411. Abutment part; 412, positioning part; 42, connecting part; 43, second wiring part; 5, input line; 6, output line; 7, fixing piece; 8, insulating seat; 81, first mounting part; 82, second limiting protrusion; 83, connecting groove; 9, connecting seat; 10, first bearing; 20, winding drum; 201, first winding body; 202, second winding body; 30, core shaft; 40, second bearing; 50, first sealing cover; 60, second sealing cover. DETAILED DESCRIPTION

[0047] In the following, only some exemplary embodiments are briefly described. As those skilled in the art will appreciate, the described embodiments may be modified in various ways without departing from the spirit or scope of the present application. Therefore, the drawings and descriptions are considered to be exemplary and non-restrictive in nature.

[0048] See also Figure 1-Figure 6 , shows an electric conversion structure of a preferred embodiment of the utility model, comprising:

[0049] Fixed base 1;

[0050] A fixed conductive ring 2, which is sleeved on the fixed base 1. The fixed conductive ring 2 is provided with a first wiring portion 21 and a guide groove 22. The first wiring portion 21 is used to connect with the input line 5 so that the fixed conductive ring 2 and the input line 5 are electrically connected, and then the fixed conductive ring 2 is connected to an external power source. The guide groove 22 is arranged around the axial center line of the fixed conductive ring 2;

[0051] A movable base 3 is rotatably mounted on the fixed base 1;

[0052] The dynamic conductive elastic member 4 is connected to the dynamic base 3 and is located between the dynamic base 3 and the fixed conductive ring 2. At least part of the dynamic conductive elastic member 4 is rotatably disposed in the guide groove 22 and abuts against the bottom of the guide groove 22. The dynamic conductive elastic member 4 is provided with a second wiring portion 43, and the second wiring portion 43 is used to connect to the output line 6.

[0053] The electric conversion structure of the utility model connects the fixed conductive ring 2 and the input line 5 and makes at least a part of the dynamic conductive elastic member 4 abut against the bottom of the guide groove 22. When the input line 5 is connected to an external power source, the output line 6 can be electrically connected to the input line 5 through the dynamic conductive elastic member 4 abutting against the fixed conductive ring 2, thereby connecting the output line 6 to the external power source. In particular, since the fixed conductive ring 2 is provided with a guide groove 22, at least a part of the dynamic conductive elastic member 4 is rotatably arranged in the guide groove 22 and abuts against the bottom of the guide groove 22. When the dynamic conductive elastic member 4 rotates following the dynamic base 3, the dynamic conductive elastic member 4 always rotates along the circumferential direction of the fixed conductive ring 2 under the guidance and limiting action of the guide groove 22. And because the dynamic conductive elastic part 4 is connected to the dynamic base 3 and is located between the dynamic base 3 and the fixed conductive ring 2, the dynamic conductive elastic part 4 always maintains contact with the bottom of the guide groove 22, ensuring that the dynamic conductive elastic part 4 is in good contact with the fixed conductive ring 2, thereby effectively avoiding problems such as electric shock and sparking; in addition, because the dynamic conductive elastic part 4 is elastic, when the bottom of the guide groove 22 is out of round, the dynamic conductive elastic part 4 can still rotate smoothly along the guide groove 22 and maintain contact with the bottom of the guide groove 22 under the action of its own elastic force, the structural reliability is high, and the elastic dynamic conductive elastic part 4 has less resistance to rotation along the guide groove 22, which can effectively avoid overheating and abnormal noise problems, and at the same time, the dynamic base 3 can rotate smoothly.

[0054] See also Figure 2 and Figure 6 In one embodiment, the dynamic conductive elastic member 4 includes:

[0055] Two elastic arms 41, the first ends of the two elastic arms 41 are connected, the second ends of the two elastic arms 41 are spaced apart, the two elastic arms 41 are respectively placed on both sides of the fixed conductive ring 2, and abutting portions 411 are provided on the second ends of the elastic arms 41, and the abutting portions 411 abut against the bottom of the guide groove 22. In this way, by placing the two elastic arms 41 on both sides of the fixed conductive ring 2 and abutting against the bottom of the guide groove 22, the dynamic conductive elastic member 4 has a better clamping force, and then the dynamic conductive elastic member 4 is reliably abutted against the fixed conductive ring 2, ensuring that the dynamic conductive elastic member 4 is in good contact with the fixed conductive ring 2. At the same time, since the dynamic conductive elastic member 4 is in contact with the fixed conductive ring 2 through the two abutting portions 411, the contact area between the dynamic conductive elastic member 4 and the fixed conductive ring 2 is moderate, and thus the overheating problem can be further avoided.

[0056] See also Figure 2 and Figure 6 In one embodiment, the dynamic conductive elastic member 4 further includes:

[0057] The connecting portion 42 is located between the first ends of the two elastic arms 41 and connects the first ends of the two elastic arms 41. The connecting portion 42 is connected to the dynamic base 3 so that the dynamic conductive elastic member 4 and the dynamic base 3 are reliably connected together. At the same time, since the connecting portion 42 is located between the first ends of the two elastic arms 41 and is connected to the dynamic base 3 through the connecting portion 42, each elastic arm 41 can maintain contact with the fixed conductive ring 2, and the structural reliability is higher.

[0058] In one embodiment, the connection between the connecting portion 42 and the dynamic base 3 is a snap-on connection, so that tool-free installation of the dynamic conductive elastic member 4 can be achieved, the installation operation is simple, and the installation efficiency is higher.

[0059] See also Figure 2 In one embodiment, the dynamic base 3 is provided with a first slot 33, and the first slot 33 and the connecting portion 42 are adapted to clamp the dynamic base 3 and the dynamic conductive elastic member 4 together. In this way, during installation, the dynamic conductive elastic member 4 can be installed on the dynamic base 3 by inserting the connecting portion 42 into the first slot 33, which is simple to operate and can effectively improve the installation efficiency.

[0060] Of course, in other embodiments, the connection method between the connection portion 42 and the dynamic base 3 can be any one of bolting, riveting, welding, etc.

[0061] See also Figure 2 and Figure 4 In one embodiment, the electrical conversion structure further includes:

[0062] The fixing member 7 is arranged in the dynamic base 3. The fixing member 7 connects the first end of the elastic arm 41 and the connecting portion 42 to limit the dynamic conductive elastic member 4 from being separated from the dynamic base 3, thereby improving the connection reliability between the dynamic conductive elastic member 4 and the dynamic base 3, and the structural reliability is higher.

[0063] Specifically, the fixing member 7 is snap-fitted with the moving base 3 so that the fixing member 7 can be quickly installed on the moving base 3, and tool-free installation can be achieved, the installation operation is simpler, and the installation efficiency is higher.

[0064] In other embodiments, the connection between the fixing member 7 and the dynamic base 3 may be any one of bolting, riveting, welding, etc.

[0065] See also Figure 2 In one embodiment, the first slot 33 passes through the outer wall of the dynamic base 3;

[0066] The second wiring part 43 is connected to the connecting part 42, and the second wiring part 43 passes through the first slot 33 and goes out of the dynamic base 3. When the second wiring part 43 is connected to the output line 6, the outer diameter of the second wiring part 43 is expanded outward so that the side of the connecting part 42 abuts against the side wall of the first slot 33. In this way, the output line 6 can be located outside the dynamic base 3 to avoid the output line 6 occupying the internal space of the dynamic base 3, making the dynamic base 3 structure more compact, and the output line 6 located outside the dynamic base 3 is more convenient to lead out to the winding reel 20. In addition, because when the second wiring part 43 is connected to the output line 6, the outer diameter of the second wiring part 43 is expanded outward so that the side of the connecting part 42 abuts against the side wall of the first slot 33, the connection reliability between the connecting part 42 and the first slot 33 can be improved, and the structural reliability is higher.

[0067] See also Figure 2 and Figure 6 In one embodiment, a positioning portion 412 is provided on the elastic arm 41, and the positioning portion 412 is spaced apart from the fixed conductive ring 2. The positioning portion 412 is used to keep the abutting portion 411 in abutment with the bottom of the guide groove 22, so that the abutting portion 411 is always in good contact with the fixed conductive ring 2, and the structural reliability is higher;

[0068] The movable base 3 is provided with a limiting groove 34 , which is arranged around the guide groove 22 , and the limiting groove 34 cooperates with the positioning portion 412 so that the positioning portion 412 and the fixed conductive ring 2 maintain a clearance fit.

[0069] See also Figure 3 and Figure 4 In one embodiment, the fixed base 1 comprises:

[0070] A base body 11, on which a connecting column 111 and a first limiting protrusion 112 are provided, wherein the first limiting protrusion 112 is provided on a first end of the connecting column 111, and an outer diameter of the first limiting protrusion 112 is greater than an inner diameter of the fixed conductive ring 2;

[0071] The limit cover 12 is separately provided with the base body 11, the limit cover 12 is located on the second end of the connecting column 111 and connected to the connecting column 111, and the outer diameter of the limit cover 12 is larger than the inner diameter of the fixed conductive ring 2;

[0072] The fixed conductive ring 2 is sleeved on the connecting column 111, the first end of the fixed conductive ring 2 is abutted against the first limiting protrusion 112, and the second end of the fixed conductive ring 2 is abutted against the limiting cover 12, that is, the first limiting protrusion 112 and the limiting cover 12 are used to clamp the fixed conductive ring 2 together to limit the axial movement and circumferential rotation of the fixed conductive ring 2 along the connecting column 111, so as to fix the fixed conductive ring 2 on the fixed base 1. At the same time, during installation, the fixed conductive ring 2 is passed through the connecting column 111 from the second end of the connecting column 111, and then the limiting cover 12 is installed on the second end of the connecting column 111. The installation difficulty is low and the installation efficiency is high.

[0073] See also Figure 3 and Fig. 9 In one embodiment, the number of the fixed conductive rings 2 is at least two;

[0074] The electrical conversion structure also includes:

[0075] At least two insulating seats 8 are provided, and the insulating seats 8 are sleeved on the connecting column 111. The insulating seats 8 are provided with a first mounting portion 81 and a second limiting protrusion 82. The first mounting portion 81 is inserted into the central hole of the fixed conductive ring 2. The end of the first mounting portion 81 away from the second limiting protrusion 82 can be against the limiting cover 12, and the end of the second limiting protrusion 82 away from the first mounting portion 81 can be against the first limiting protrusion 112. A connecting groove 83 is provided in the second limiting protrusion 82. The connecting groove 83 is plugged and matched with the first mounting portion 81 on the other of the two adjacent insulating seats 8, and the two adjacent fixed conductive rings 2 are separated by the second limiting protrusion 82. In this way, by making the two adjacent insulating seats 8 plug and match with the first mounting portion 81 through the connecting groove 83, each fixed conductive ring 2 can be installed on the corresponding insulating seat 8. At the same time, the two adjacent fixed conductive rings 2 are separated by the second limiting protrusion 82 to avoid electrical conduction between the two adjacent fixed conductive rings 2, thereby improving the safety performance of the electric conversion structure.

[0076] It can be understood that the number of fixed conductive rings 2, dynamic conductive elastic parts 4, input lines 5, and output lines 6 are the same, each input line 5 is connected one-to-one with the first wiring part 21 on the corresponding fixed conductive ring 2, and each output line 6 is connected one-to-one with the second wiring part 43 on the corresponding dynamic conductive elastic part 4. Multiple input lines 5 and output lines 6 can be configured according to actual needs.

[0077] In one embodiment, the dynamic conductive elastic member 4 is a sheet structure made of beryllium copper, so that the dynamic conductive elastic member 4 has better high temperature resistance, wear resistance, corrosion resistance, conductivity and heat dissipation performance, thereby effectively avoiding problems such as overheating and sparking. At the same time, the dynamic conductive elastic member 4 is provided with two abutment portions 411, which are in full contact with the guide groove 22 on the fixed conductive ring 2, and the contact area is large. Therefore, the electric conversion structure can transmit three-phase power supply, or even high-power power supply.

[0078] See also Figure 2 and Figure 4 In one embodiment, the dynamic base 3 includes:

[0079] A first movable base 31, wherein second slots 311 are provided on both circumferential sides of the first movable base 31;

[0080] The second movable base 32, the second movable base 32 and the first movable base 31 are arranged in sequence along the circumference of the movable base 3 and surround the movable base 3, and the second movable base 32 is provided with a snap-fitting protrusion 321 on both sides of the circumference, and the snap-fitting protrusion 321 and the corresponding second snap-fitting groove 311 are snap-fitted to connect the first movable base 31 and the second movable base 32 together. That is, the dynamic base 3 is composed of a first dynamic base 31 and a second dynamic base 32 which are separately arranged. During installation, a part of the dynamic conductive elastic member 4 is installed on the first dynamic base 31, and another part of the dynamic conductive elastic member 4 is installed on the second dynamic base 32. Then, the first dynamic base 31 and the second dynamic base 32 are snapped together so that at least a part of the dynamic conductive elastic member 4 can abut against the bottom of the guide groove 22. The installation difficulty is low and the installation efficiency is high. At the same time, since the first dynamic base 31 and the second dynamic base 32 are snapped together by the snapping protrusion 321 and the second snapping groove 311, the first dynamic base 31 and the second dynamic base 32 can be quickly installed together, and tool-free installation can be achieved, so the installation operation is simpler and the installation is more convenient.

[0081] See also Figure 3 In one embodiment, the electrical conversion structure further includes:

[0082] A connecting seat 9, wherein the connecting seat 9 has a connecting cavity;

[0083] The dynamic base 3 is provided with a second mounting portion and a third limiting protrusion, the second mounting portion extends along the axial direction of the dynamic base 3, the second mounting portion covers the dynamic conductive elastic member 4, the second mounting portion is inserted in the connection cavity, and the second mounting portion and the connection seat 9 are connected together, the third limiting protrusion is located on one end of the second mounting portion, the outer diameter of the third limiting protrusion is larger than the outer diameter of the second mounting portion, and the third limiting protrusion abuts against one end of the connection seat 9 near the top opening of the connection cavity. In this way, by covering the second mounting portion with the connection seat 9 and abutting against one end of the connection seat 9 near the top opening of the connection cavity, the connection cavity forms a relatively closed cavity, preventing water from entering the interior of the dynamic base 3 from the side gap of the dynamic base 3, thereby improving the waterproof performance, and at the same time, by connecting the connection seat 9 and the winding disk 20, the present electric conversion structure and the winding disk 20 are connected together.

[0084] See also Figure 3 In one embodiment, the electric conversion structure further includes a first bearing 10, which is sleeved on the end of the fixed base 1. The outer ring of the first bearing 10 and the inner cavity of the dynamic base 3 are interference fit to support the dynamic base 3. At the same time, the friction between the dynamic base 3 and the fixed base 1 is reduced, so that the dynamic base 3 rotates more smoothly.

[0085] In one embodiment, the electric conversion structure also includes a first sealing cover 50 and a second sealing cover 60. The first sealing cover 50 is arranged on the first end of the dynamic base 3 and covers the opening on the first end of the dynamic base 3. The second sealing cover 60 is arranged on the second end of the dynamic base 3 and covers the opening on the second end of the dynamic base 3 to improve the sealing performance of the electric conversion structure.

[0086] See also Figure 7-Figure 9 , showing a cable reel according to a preferred embodiment of the utility model, including the above-mentioned electrical conversion structure.

[0087] The cable reel of the utility model can also effectively avoid the problems of power outages and sparks due to the adoption of the above-mentioned electrical conversion structure.

[0088] See also Figure 7-Figure 9 , the reel also includes:

[0089] A mandrel 30, wherein a first end of the mandrel 30 is inserted into a connecting hole 113 on the fixed base 1;

[0090] The winding drum 20 is rotatably sleeved on the core shaft 30, the winding drum 20 is connected to the connecting seat 9 and covers the electric conversion structure, and the winding drum 20 is used to wind the output line 6;

[0091] The clockwork spring is located between the core shaft 30 and the winding drum 20. The inner end of the clockwork spring is connected to the core shaft 30, and the outer end of the clockwork spring is connected to the winding drum 20. In this way, when the output line 6 is pulled, the winding drum 20 rotates, and the clockwork spring accumulates force. At the same time, the connecting seat 9, the dynamic base 3 and the dynamic conductive elastic member 4 all rotate with the winding drum 20. When the output line 6 needs to be wound onto the winding drum 20, the output line 6 is released, and the clockwork spring releases the elastic potential energy to drive the winding drum 20 to rotate, and then the output line 6 is rewound on the winding drum 20.

[0092] See also Figure 8 , the winder also includes:

[0093] The second bearing 40 is sleeved on the second end of the core shaft 30 and is located between the winding drum 20 and the core shaft 30. The winding drum 20 and the outer ring of the second bearing 40 are interference fit to support the winding drum 20. At the same time, the friction between the winding drum 20 and the core shaft 30 is reduced, so that the winding drum 20 rotates more smoothly, thereby making the pulling and returning of the wires lighter.

[0094] In one embodiment, to facilitate the installation of the electric conversion structure, the winding drum 20 includes a first winding body 201 and a second winding body 202. The first winding body 201 and the second winding body 202 are arranged one by one along the height direction of the winding drum 20 and together cover the electric conversion structure.

[0095] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples, unless they are contradictory.

[0096] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0097] The above are only specific implementations of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of various changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. An electrical conversion structure, characterized in that: include: Fixed base; A fixed conductive ring, the fixed conductive ring is sleeved on the fixed base, the fixed conductive ring is provided with a first wiring portion and a guide groove, the first wiring portion is used to connect with the input line, and the guide groove is arranged around the axial center line of the fixed conductive ring; A movable base, the movable base being rotatably sleeved on the fixed base; A dynamic conductive elastic member, which is connected to the dynamic base and is located between the dynamic base and the fixed conductive ring. At least part of the dynamic conductive elastic member is rotatably disposed in the guide groove and abuts against the bottom of the guide groove. A second wiring portion is provided on the dynamic conductive elastic member, and the second wiring portion is used to connect to the output line.

2. The electrical conversion structure according to claim 1, characterized in that: The dynamic conductive elastic member comprises: Two elastic arms, the first ends of the two elastic arms are connected, the second ends of the two elastic arms are set apart, the two elastic arms are placed on both sides of the fixed conductive ring, and the second ends of the elastic arms are provided with abutment parts, and the abutment parts abut against the bottom of the guide groove.

3. The electrical conversion structure according to claim 2, characterized in that: The dynamic conductive elastic member also includes: A connecting portion, wherein the connecting portion is located between the first ends of the two elastic arms and connects the first ends of the two elastic arms, and the connecting portion is connected to the moving base.

4. The electrical conversion structure according to claim 3, characterized in that: The dynamic base is provided with a first clamping groove, and the first clamping groove is adapted to the connecting portion to connect the dynamic base and the dynamic conductive elastic member together.

5. The electrical conversion structure according to claim 4, characterized in that: The electrical conversion structure further comprises: A fixing member is disposed in the dynamic base, and the fixing member connects the first end of the elastic arm and the connecting portion to limit the dynamic conductive elastic member from being separated from the dynamic base.

6. The electrical conversion structure according to claim 4, characterized in that: The first slot passes through the outer side wall of the dynamic base; The second wiring portion is connected to the connecting portion, and the second wiring portion passes through the first clamping groove and out of the dynamic base.

7. The electrical conversion structure according to claim 2, characterized in that: The elastic arm is provided with a positioning portion, the positioning portion is spaced apart from the fixed conductive ring, and the positioning portion is used to keep the abutting portion in abutment with the bottom of the guide groove; The movable base is provided with a limiting groove, which is arranged around the guide groove. The limiting groove cooperates with the positioning portion so that the positioning portion and the fixed conductive ring maintain a clearance fit.

8. The electrical conversion structure according to claim 1, characterized in that: The fixed base comprises: A base body, wherein a connecting column and a first limiting protrusion are provided on the base body, wherein the first limiting protrusion is provided on a first end of the connecting column, and an outer diameter of the first limiting protrusion is greater than an inner diameter of the fixed conductive ring; A limit cover, the limit cover and the base body are separately provided, the limit cover is located on the second end of the connecting column and is connected to the connecting column, and the outer diameter of the limit cover is larger than the inner diameter of the fixed conductive ring; The fixed conductive ring is sleeved on the connecting column, the first end of the fixed conductive ring abuts against the first limiting protrusion, and the second end of the fixed conductive ring abuts against the limiting cover.

9. The electrical conversion structure according to claim 8, characterized in that: The number of the fixed conductive rings is at least two; The electrical conversion structure further comprises: At least two insulating seats, the insulating seat sleeve is arranged on the connecting column, the insulating seat is provided with a first mounting portion and a second limiting protrusion, the first mounting portion is inserted into the central hole of the fixed conductive ring, the end of the first mounting portion away from the second limiting protrusion can be abutted against the limiting cover, the end of the second limiting protrusion located at the first mounting portion can be abutted against the first limiting protrusion, a connecting groove is provided in the second limiting protrusion, the connecting groove is plugged and matched with the first mounting portion on the other of the two adjacent insulating seats, and the two adjacent fixed conductive rings are separated by the second limiting protrusion; And / or, the dynamic base comprises: A first movable base, wherein second clamping grooves are provided on both circumferential sides of the first movable base; A second moving base, the second moving base and the first moving base are arranged in sequence along the circumference of the moving base and surround the moving base, and both sides of the circumference of the second moving base are provided with snap-fitting protrusions, and the snap-fitting protrusions and the corresponding second snap-fitting grooves are snap-fitted to connect the first moving base and the second moving base together.

10. A cable reel, characterized in that: The invention comprises the electric conversion structure according to any one of claims 1 to 9.

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