Winding roll

Abstract

The winding roll comprises a support body, a socket assembly and a winding wheel, the support body is provided with a straight shaft part, the straight shaft part comprises a fixed end and a connecting end, the socket assembly is fixedly connected to the fixed end, the winding wheel is provided with a shaft hole, the winding wheel is rotationally arranged on the straight shaft part in a sleeving mode through the shaft hole, and the winding wheel is fixedly provided with a power supply disc. The socket assembly is fixedly provided with a power connection disc assembly, the power supply disc is provided with a plurality of power supply rings, the power connection disc assembly is provided with a plurality of elastic power connection components, each elastic power connection component comprises an elastic piece and a plurality of conductive rings, the conductive rings and the power supply rings are arranged in a one-to-one correspondence mode, and the conductive rings are provided with a plurality of electric contact protruding parts. The elastic piece has a movement trend of pushing the electric contact convex part of the conductive ring to be electrically propped against the corresponding power supply ring; a first sealing structure is arranged between the socket assembly and the winding wheel, and a second sealing structure is arranged between the inner wall of the side, close to the connecting end, of the shaft hole and the outer wall of the straight shaft part. The effects of improving the electric connection stability and improving the sealing performance of the winding roll are achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of cable reels, and particularly to a cable reel. Background Art

[0002] The existing Chinese patent with the publication number CN216903375U discloses a rotary electrical connector, which includes a fixed disk and a rotating disk. One end of the rotating disk is convexly provided with a rotating shaft that is rotatably matched with the fixed disk. Two mutually isolated first energizing coils and second energizing coils are sleeved on the rotating shaft. A main wire is provided on the fixed disk, and a first voltage conducting spring and a second voltage conducting spring that are respectively elastically abutted against the first energizing coil and the second energizing coil are provided on the fixed disk. The incoming wire end of the main wire is connected to the first voltage conducting spring, and the outgoing wire end of the main wire is connected to the second voltage conducting spring. At least one set of branch wires is provided on the rotating disk. The incoming wire end of the branch wire is connected to the first energizing coil, and the outgoing wire end of the branch wire is connected to the second energizing coil.

[0003] However, the above electrical connector has the following disadvantages: The electrical connector realizes power-on by providing the first voltage conducting spring and the second voltage conducting spring on the fixed disk and elastically abutting the first voltage conducting spring and the second voltage conducting spring against the first energizing coil and the second energizing coil sleeved on the rotating shaft respectively. However, after long-term use, the surfaces of the first voltage conducting spring and the second voltage conducting spring are prone to wear, resulting in poor power connection effect, and urgent improvement is needed. Summary of the Invention

[0004] The purpose of the present invention is to provide a cable reel, which has the effects of improving the electrical connection stability of the present invention and improving the sealing performance of the cable reel.

[0005] The above technical purpose of the present invention is achieved through the following technical solutions: A cable reel includes a bracket main body, a socket assembly, and a cable reel for winding a power cord. The bracket main body has a straight shaft portion, and the straight shaft portion includes a fixed end and a connection end. The socket assembly is fixedly connected to the fixed end. The cable reel is provided with a shaft hole, and the cable reel is rotatably sleeved on the straight shaft portion through the shaft hole. A power supply disk is coaxially fixed on one side of the cable reel close to the fixed end. A power connection disk assembly is fixedly provided on one side of the socket assembly facing the power supply disk. A plurality of power supply rings are concentrically arranged on the end surface of the power supply disk facing the socket assembly. A plurality of elastic power connection members are provided on the power connection disk assembly corresponding to the power supply rings. The elastic power connection member includes an elastic member and a plurality of conductive rings electrically connected to the socket assembly. The conductive rings are arranged in one-to-one correspondence with the power supply rings. The conductive ring has a plurality of electrical contact protrusions. The elastic member has a movement tendency to push the electrical contact protrusions of the conductive ring to electrically abut against the corresponding power supply ring. A first sealing structure is provided between the socket assembly and the cable reel, and a second sealing structure is provided between the inner wall of the shaft hole near the connection end side and the outer wall of the straight shaft portion.

[0006] By adopting the above technical solution, the wire reel can rotate around the straight shaft part as the rotation center to realize the wire release or wire winding of the power cord. The rotation of the wire reel will drive the power supply disc and the power supply ring to rotate synchronously. Whether the power supply ring is in a rotating state or a stationary state, the elastic member on the power connection disc assembly uses its own elastic force to push the electrical contact protrusion of the conductive ring to always abut tightly against the power supply ring, so that the power supply ring is in contact and energized with the conductive ring through the electrical contact protrusion, thereby realizing the power connection of the socket assembly. At the same time, the elastic member can also damp and buffer the axial shaking force of the wire reel, reduce the noise during the operation of the present invention, and ensure that the socket assembly will not be powered off when the wire reel rotates; in addition, during the rotation of the wire reel, both ends of the wire reel are hermetically fitted with the socket assembly and the straight shaft part through the corresponding first sealing structure and second sealing structure respectively, improving the waterproof and dustproof performance of the wire reel, and having the effects of improving the electrical connection stability of the present invention and improving the sealing performance of the wire reel.

[0007] A further setting of the present invention is that: the power connection disc assembly has an annular chamber, the conductive ring includes an annular conductive part, a plurality of electrical contact protrusions are integrally arranged on the annular conductive part, the annular conductive part is floatingly arranged in the annular chamber, the power connection disc assembly is provided with a plurality of through holes on the side facing the power supply disc, the through holes are communicated with the annular chamber, the elastic member is built in the annular chamber, and the elastic member is used to push the electrical contact protrusion to extend out of the through hole.

[0008] By adopting the above technical solution, when the contact points of the plurality of electrical contact protrusions and the power supply ring are not coplanar, the rotation of the power supply disc will push each electrical contact protrusion to generate an axial displacement. At this time, the elastic members corresponding to each electrical contact protrusion accumulate or release elastic force, ensuring that the end of the electrical contact protrusion can extend out of the corresponding through hole and always be able to abut against the power supply ring for power connection.

[0009] A further setting of the present invention is that: a plurality of the elastic members are arranged at equal intervals in the annular chamber corresponding to the electrical contact protrusions, a plurality of the electrical contact protrusions are distributed at equal intervals in the circumferential direction of the annular conductive part, and the electrical contact protrusions on adjacent conductive rings are arranged in a staggered manner.

[0010] By adopting the above technical solution, the elastic members and the electrical contact protrusions arranged at equal intervals make the compressive stress distribution generated by the electrical contact protrusions on the conductive ring more uniform.

[0011] A further setting of the present invention is that: the power connection disc assembly includes a left cover and a right cover. The left cover is provided with a first circular groove corresponding to the annular conductive part, and the right cover is provided with a second circular groove corresponding to the annular conductive part. When the left cover is fixedly connected to the right cover, the first circular groove and the second circular groove are aligned with each other and jointly form the annular chamber.

[0012] By adopting the above technical solution, the detachable left cover and right cover are beneficial to the disassembly and assembly of the slip ring in the power connection plate assembly.

[0013] The further setting of the present invention is that: the elastic member is set as a spring, the left cover is provided with a positioning post corresponding to the first end of the spring, the electrical contact convex part is provided with a positioning groove corresponding to the second end of the spring, the first end of the spring is sleeved outside the positioning post and abuts against the left cover, and the second end of the spring abuts in the positioning groove.

[0014] By adopting the above technical solution, by using the positioning effect of the positioning post and the positioning groove on both ends of the spring, it can effectively prevent the spring from accidentally shifting in the annular chamber and causing elastic failure.

[0015] The further setting of the present invention is that: an inner ring annular rib extends towards the side of the power supply plate in the middle of the power connection plate assembly, the power supply plate is provided with an annular sleeve corresponding to the inner ring annular rib, the annular sleeve is rotatably sleeved outside the inner ring annular rib, and an anti - detachment part extends radially outwards at one end of the inner ring annular rib away from the power connection plate assembly, and the inner ring annular rib is in anti - detachment cooperation with the annular sleeve through the anti - detachment part.

[0016] By adopting the above technical solution, the setting of the anti - detachment part can effectively prevent the power supply plate from detaching from the power connection plate assembly, so that the power supply plate can only rotate coaxially outside the inner ring annular rib.

[0017] The further setting of the present invention is that: an outer ring annular rib extends towards the side of the power supply plate at the edge of the power connection plate assembly, the outer ring annular rib forms a rotation groove on the power connection plate assembly, and the power supply plate is rotatably arranged in the rotation groove.

[0018] By adopting the above technical solution, the inner wall of the outer ring annular rib can limit the outer circumference of the power supply plate, so that the power supply plate can only rotate in the rotation groove surrounded by the outer ring annular rib.

[0019] The further setting of the present invention is that: the socket assembly extends along the axial direction of the straight shaft part to form a first annular convex part, the wire reel extends a second annular convex part corresponding to the first annular convex part, the first annular convex part and the second annular convex part are in rotational cooperation, and the first sealing structure is coaxially arranged between the first annular convex part and the second annular convex part.

[0020] By adopting the above technical solution, by using the rotational cooperation relationship between the first annular convex part and the second annular convex part, the rotational concentricity of the wire reel relative to the socket assembly can be improved. At the same time, by coaxially arranging the first sealing structure between the first annular convex part and the second annular convex part, the waterproof and dust - proof sealing performance on the side of the wire reel close to the fixed end can be improved.

[0021] A further setting of the present invention is that: both the first sealing structure and the second sealing structure are provided as annular seals. The annular seal includes a connecting portion, an outer ring sealing portion and an inner ring sealing portion located on both sides of the connecting portion. The outer ring sealing portion is in sealing fit with the inner wall of the corresponding first annular convex portion or the shaft hole, and the inner ring sealing portion is in contact fit with the outer wall of the corresponding second annular convex portion or the straight shaft portion.

[0022] By adopting the above technical solution, when the wire reel rotates, it will drive the second annular convex portion to rotate relative to the first annular convex portion. At this time, the annular seal on the fixed end side can use its outer ring sealing portion and inner ring sealing portion to keep sealed with the first annular convex portion and the second annular convex portion respectively, and the annular seal on the connecting end side can use its outer ring sealing portion and inner ring sealing portion to be in contact and sealed with the inner wall of the shaft hole and the outer wall of the straight shaft portion respectively.

[0023] A further setting of the present invention is that: a buffer gap is formed between the outer ring sealing portion and the inner ring sealing portion, and an annular spring is provided in the buffer gap. The annular spring has a tendency to lock the inner ring sealing portion to the second annular convex portion or the straight shaft portion.

[0024] By adopting the above technical solution, the addition of the annular spring can improve the fitting property between the inner ring sealing portion of the annular seal and the outer wall of the corresponding second annular convex portion or the straight shaft portion, thereby improving the overall sealing performance of the present invention.

[0025] In summary, the present invention has the following beneficial effects: A socket assembly is fixedly connected to the end of the straight shaft portion of the bracket body. A wire reel is rotatably sleeved on the straight shaft portion. A power supply disk is fixedly arranged on the wire reel, and a power connection disk assembly is fixedly arranged on the socket assembly. A plurality of power supply rings are concentrically arranged on the end face of the power supply disk facing the socket assembly. A plurality of elastic power connection members are arranged on the power connection disk assembly. The elastic power connection member includes an elastic member and a plurality of conductive rings electrically connected to the socket assembly. The socket assembly extends along the axial direction of the straight shaft portion to form a first annular convex portion. The wire reel extends a second annular convex portion corresponding to the first annular convex portion. And a first sealing structure is coaxially arranged between the first annular convex portion and the second annular convex portion. A second sealing structure is arranged between the inner wall of the shaft hole near the connection end and the outer wall of the straight shaft portion. The wire reel can rotate around the straight shaft portion as the rotation center to realize the pay-out or take-up of the power cord. When the wire reel rotates, it will drive the power supply disk and the power supply rings to rotate synchronously. No matter whether the power supply rings are in a rotating state or a stationary state, the elastic member on the power connection disk assembly uses its own elastic force to push the electrical contact convex portion of the conductive ring to always tightly abut against the power supply ring, so that the power supply ring is in contact with the conductive ring through the electrical contact convex portion to conduct electricity, thereby realizing the power connection of the socket assembly. At the same time, the elastic member can also damp and buffer the axial shaking force of the wire reel, reduce the noise during the operation of the present invention, and ensure that the socket assembly will not be powered off when the wire reel rotates; in addition, when the wire reel is rotating, one side of the wire reel close to the fixed end is kept sealed through the first sealing structure between the second annular convex portion and the first annular convex portion. Similarly, one side of the wire reel close to the connection end is kept sealed through the second sealing structure between the inner wall of the shaft hole and the outer wall of the straight shaft portion, thereby improving the waterproof and dustproof performance of the wire reel, and having the effects of improving the electrical connection stability of the present invention and improving the sealing performance of the wire reel. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is the overall structure diagram of the present invention.

[0027] Figure 2 is the longitudinal sectional view of the present invention.

[0028] Figure 3 is the present invention Figure 2 partial enlarged view of area A in.

[0029] Figure 4 is the present invention Figure 2 partial enlarged view of area B in.

[0030] Figure 5 is the present invention Figure 2 partial enlarged view of area C in.

[0031] Figure 6 is the exploded view of the socket assembly and the bracket body of the present invention.

[0032] Figure 7 is the overall exploded view of the present invention.

[0033] Figure 8 is the present invention Figure 7 a view from another perspective.

[0034] Figure 9 is a structural diagram of the elastic power connection member of the present invention.

[0035] In the figure: 1. bracket main body; 11. straight shaft part; 111. fixed end; 112. connection end; 2. socket assembly; 21. conductive sheet; 22. first annular convex part; 3. power connection disk assembly; 30. annular chamber; 4. left cover; 41. first annular groove; 42. positioning post; 5. right cover; 51. second annular groove; 52. through hole; 53. limiting groove; 54. outer ring annular rib; 541. rotation groove; 55. inner ring annular rib; 551. anti - detachment part; 6. elastic power connection member; 61. elastic member; 62. conductive ring; 621. annular conductive part; 6211. strengthening part; 622. electrical contact convex part; 6221. positioning groove; 7. wire wheel assembly; 8. wire winding wheel; 81. shaft hole; 82. second annular convex part; 83. sealing cover; 9. power supply disk; 90. annular installation groove; 91. power supply ring; 911. ground wire electrode ring; 912. zero - line electrode ring; 913. live - wire electrode ring; 92. annular sleeve; 10. annular seal; 101. outer - ring seal part; 1011. annular strengthening member; 102. inner - ring seal part; 1021. annular convex rib; 103. connection part; 104. buffer gap; 1041. annular embedding groove; 1042. filling gap; 105. annular spring. Detailed implementation manners

[0036] The present invention will be further described below with reference to the accompanying drawings.

[0037] A wire winding reel, as Figures 1 - 9As shown, it includes a bracket body 1, a socket assembly 2, and a wire reel 8 for winding the power cord. The bracket body 1 has a straight shaft portion 11. The straight shaft portion 11 includes a fixed end 111 and a connection end 112. The socket assembly 2 is fixedly connected to the fixed end 111. The wire reel 8 is provided with a shaft hole 81. The wire reel 8 is rotatably sleeved on the straight shaft portion 11 through the shaft hole 81. A power supply disk 9 is coaxially fixed on one side of the wire reel 8 close to the fixed end 111. The wire reel 8 and the power supply disk 9 together form a wire wheel assembly 7. In this embodiment, one end of the power cord is fixedly connected to the wire reel 8. An electrical connection portion 103 is provided on the power supply disk 9. The electrical connection portion 103 is electrically connected to the power cord through a wire. On one side of the socket assembly 2 facing the power supply disk 9, a power connection disk assembly 3 is fixedly provided. On the end face of one side of the power supply disk 9 facing the socket assembly 2, a plurality of power supply rings 91 are concentrically arranged. In this embodiment, an annular installation groove 90 is provided on the power supply disk 9 corresponding to the power supply rings 91. The power supply rings 91 are fixedly installed in the corresponding annular installation grooves 90. And the socket assembly 2 has jacks, and conductive sheets 21 are inserted into the jacks. Both ends of a conductive ring 62 are electrically connected to the power supply ring 91 and the conductive sheet 21 respectively. A plurality of elastic power connection members 6 are provided on the power connection disk assembly 3 corresponding to the power supply rings 91. The elastic power connection members 6 include elastic members 61 and a plurality of conductive rings 62 electrically connected to the socket assembly 2. The conductive rings 62 are arranged in one-to-one correspondence with the power supply rings 91. The conductive rings 62 have a plurality of electrical contact protrusions 622. The elastic members 61 have a tendency to push the electrical contact protrusions 622 of the conductive rings 62 to be electrically abutted against the corresponding power supply rings 91. The socket assembly 2 extends along the axial direction of the straight shaft portion 11 to form a first annular convex portion 22. The wire reel 8 extends a second annular convex portion 82 corresponding to the first annular convex portion 22. The first annular convex portion 22 is in rotational cooperation with the second annular convex portion 82. And a first sealing structure is coaxially provided between the first annular convex portion 22 and the second annular convex portion 82. A second sealing structure is provided between the inner wall of one side of the shaft hole 81 close to the connection end 112 and the outer wall of the straight shaft portion 11. In this embodiment, the power supply rings 91 include a live wire electrode ring 913, a neutral wire electrode ring 912, and a ground wire electrode ring 911 concentrically arranged on the side wall of the power supply disk 9. There are three conductive rings 62. The three conductive rings 62 are concentrically arranged on the side wall of the power connection disk assembly 3 corresponding to the live wire electrode ring 913, the neutral wire electrode ring 912, and the ground wire electrode ring 911, so that the live wire electrode ring 913, the neutral wire electrode ring 912, and the ground wire electrode ring 911 can be aligned and contacted with the corresponding conductive rings 62 to conduct electricity. And in this embodiment, each elastic member 61 of each group of elastic power connection members 6 has three. The three elastic members 61 are circumferentially arranged corresponding to the annular conductive portion 621 in the annular chamber 30. And adjacent elastic members 61 are arranged at equal intervals. The plurality of elastic members 61 arranged at equal intervals are distributed in an equilateral triangle, so that the elastic pressing force acting on the conductive rings 62 is more uniform and consistent.

[0038] As Figures 1 - 3 and Figures 7 - 9As shown, the power connection plate assembly 3 has an annular chamber 30. The conductive ring 62 includes an annular conductive portion 621, and a plurality of electrical contact protrusions 622 are integrally provided in the circumferential direction of the annular conductive portion 621. The annular conductive portion 621 is floatingly arranged in the annular chamber 30. A plurality of through holes 52 are formed on one side of the power connection plate assembly 3 facing the power supply plate 9, and the through holes 52 communicate with the annular chamber 30. The elastic member 61 is disposed in the annular chamber 30, and the elastic member 61 is used to push the electrical contact protrusions 622 to extend out of the through holes 52. When the contact points of the plurality of electrical contact protrusions 622 with the power supply ring 91 are not coplanar, the rotation of the power supply plate 9 will push each electrical contact protrusion 622 to generate an axial displacement. At this time, the elastic members 61 corresponding to each electrical contact protrusion 622 accumulate or release elastic force to ensure that the end of the electrical contact protrusion 622 can extend out of the corresponding through hole 52 and always be in contact with the power supply ring 91 for power connection; a plurality of elastic members 61 are arranged at equal intervals in the annular chamber 30 corresponding to the electrical contact protrusions 622, and the plurality of electrical contact protrusions 622 are equally spaced in the circumferential direction of the annular conductive portion 621, and the electrical contact protrusions 622 on adjacent conductive rings 62 are arranged in a staggered manner. The equally spaced elastic members 61 and electrical contact protrusions 622 make the compressive stress distribution of the electrical contact protrusions 622 on the conductive ring 62 on the power supply plate 9 more uniform; the power connection plate assembly 3 includes a left cover 4 and a right cover 5. The left cover 4 is provided with a first circular groove 41 corresponding to the annular conductive portion 621, and the right cover 5 is provided with a second circular groove 51 corresponding to the annular conductive portion 621. When the left cover 4 is fixedly connected to the right cover 5, the first circular groove 41 and the second circular groove 51 are aligned with each other and jointly form the annular chamber 30. The detachable design of the left cover 4 and the right cover 5 is beneficial to the disassembly and assembly of the conductive ring 62 in the power connection plate assembly 3; the elastic member 61 is a spring. The left cover 4 is provided with a positioning post 42 corresponding to the first end of the spring, and the electrical contact protrusion 622 is provided with a positioning groove 6221 corresponding to the second end of the spring. The first end of the spring is sleeved outside the positioning post 42 and abuts against the left cover 4, and the second end of the spring abuts against the positioning groove 6221. By using the positioning function of the positioning post 42 and the positioning groove 6221 on both ends of the spring, it can effectively prevent the spring from accidentally shifting in the annular chamber 30 and causing elastic failure; in addition, in this embodiment, the annular conductive portion 621 is provided with a reinforcing portion 6211 extending in the radial direction at the position of the electrical contact protrusion 622. The power connection plate assembly 3 is provided with a limiting groove 53 on the side wall of the annular chamber 30 for restricting the reinforcing portion 6211, and the reinforcing portion 6211 is restricted in the limiting groove 53 and slidably cooperates with it in the axial direction. The setting of the reinforcing portion 6211 improves the structural strength of the position of the electrical contact protrusion 622. At the same time, by using the limiting effect of the limiting groove 53 on the reinforcing portion 6211 and the sliding cooperation between the reinforcing portion 6211 and the limiting groove 53, it can effectively prevent the conductive ring 62 from rotating in the annular chamber 30;One side of the middle part of the power connection plate assembly 3 extends towards the power supply plate 9 with an inner ring annular rib 55. The power supply plate 9 is provided with an annular sleeve 92 corresponding to the inner ring annular rib 55. The annular sleeve 92 is rotatably sleeved outside the inner ring annular rib 55. And one end of the inner ring annular rib 55 far from the power connection plate assembly 3 extends radially outwards with an anti-disengagement part 551. The inner ring annular rib is anti-disengaged with the annular sleeve through the anti-disengagement part. The setting of the anti-disengagement part 551 can effectively prevent the power supply plate 9 from disengaging from the power connection plate assembly 3, so that the power supply plate 9 can only rotate coaxially outside the inner ring annular rib 55; One side of the edge of the power connection plate assembly 3 extends towards the power supply plate 9 with an outer ring annular rib 54. The outer ring annular rib 54 forms a rotation groove 541 on the power connection plate assembly 3. The power supply plate 9 is rotatably arranged in the rotation groove 541. The inner wall of the outer ring annular rib 54 can limit the outer circumference of the power supply plate 9, so that the power supply plate 9 can only rotate in the rotation groove 541 surrounded by the outer ring annular rib 54.;

[0039] Such as Figures 3 - 5 And Figures 7 - 8As shown, both the first sealing structure and the second sealing structure are provided as an annular seal 10 with a U-shaped cross-section. The annular seal 10 includes a connecting portion 103, an outer ring sealing portion 101 and an inner ring sealing portion 102 located on both sides of the connecting portion 103. The outer ring sealing portion 101 is in sealing fit with the inner wall of the corresponding first annular convex portion 22 or the shaft hole 81, and the inner ring sealing portion 102 is in contact and cooperation with the outer wall of the corresponding second annular convex portion 82 or the straight shaft portion 11. When the winding wheel 8 rotates, it will drive the second annular convex portion 82 to rotate relative to the first annular convex portion 22. At this time, the annular seal 10 on the side of the fixed end 111 can use its outer ring sealing portion 101 and inner ring sealing portion 102 to maintain sealing with the first annular convex portion 22 and the second annular convex portion 82 respectively. In this embodiment, the winding wheel 8 is provided with a stepped hole at the connecting end 112 of the straight shaft portion 11, and an annular seal 10 is installed in the stepped hole. The winding wheel 8 is fixedly provided with a sealing cover 83 at the opening of the stepped hole. The sealing cover 83 is in rotational cooperation with the straight shaft portion 11. The annular seal 10 on the side of the connecting end 112 can use its outer ring sealing portion 101 and inner ring sealing portion 102 to be in contact and sealing with the inner wall of the shaft hole 81 and the outer wall of the straight shaft portion 11 respectively; a plurality of annular ribs 1021 are provided on the side wall of the inner ring sealing portion 102 facing the straight shaft portion 11, and an included angle is formed between the extending direction of the annular ribs 1021 and the extending direction of the inner ring sealing portion 102, so that the inner ring sealing portion 102 can be in contact and sealing with the outer wall of the corresponding second annular convex portion 82 or the straight shaft portion 11 through the end portions of the annular ribs 1021. Additionally, in other embodiments, grease can be filled in the filling gap 1042 between adjacent annular ribs 1021; a buffer gap 104 is formed between the outer ring sealing portion 101 and the inner ring sealing portion 102. An annular embedding groove 1041 is opened at one end of the side wall of the inner ring sealing portion 102 facing the buffer gap 104. An annular spring 105 is installed in the annular embedding groove 1041. The annular spring 105 has a tendency to lock the inner ring sealing portion 102 to the second annular convex portion 82 or the straight shaft portion 11. The addition of the annular spring 105 can improve the fitting property between the inner ring sealing portion 102 of the annular seal 10 and the outer wall of the corresponding second annular convex portion 82 or the straight shaft portion 11, thereby improving the overall sealing performance of the present invention; additionally, in this embodiment, an annular reinforcing member 1011 is provided in the inner ring sealing portion 102. The cross-section of the annular reinforcing member 1011 is L-shaped. The annular reinforcing member 1011 is placed in the area where the outer ring sealing portion 101 and the connecting portion 103 are located to improve the radial supporting force of the outer ring sealing portion 101.

[0040] The basic working principle of the present invention is as follows: A socket assembly 2 is fixedly connected to the end of the straight shaft portion 11 of the bracket main body 1. A wire reel 8 is rotatably sleeved on the straight shaft portion 11. A power supply disk 9 is fixedly provided on the wire reel 8. A power connection disk assembly 3 is fixedly provided on the socket assembly 2. A plurality of power supply rings 91 are concentrically arranged on the end face of the power supply disk 9 facing the socket assembly 2. A plurality of elastic power connection members 6 are provided on the power connection disk assembly 3. The elastic power connection member 6 includes an elastic member 61 and a plurality of conductive rings 62 electrically connected to the socket assembly 2. The socket assembly 2 extends along the axial direction of the straight shaft portion 11 to form a first annular convex portion 22. The wire reel 8 extends a second annular convex portion 82 corresponding to the first annular convex portion 22. And a first sealing structure is coaxially arranged between the first annular convex portion 22 and the second annular convex portion 82. A second sealing structure is provided between the inner wall of the shaft hole 81 near the connection end 112 and the outer wall of the straight shaft portion 11. The wire reel 8 can rotate around the straight shaft portion 11 as the rotation center to realize the unwinding or winding of the power cord. When the wire reel 8 rotates, it will drive the power supply disk 9 and the power supply rings 91 to rotate synchronously. Whether the power supply rings 91 are in a rotating state or a stationary state, the elastic member 61 on the power connection disk assembly 3 uses its own elastic force to push the electrical contact convex portion 622 of the conductive ring 62 to always press tightly against the power supply ring 91, so that the power supply ring 91 is in contact with the conductive ring 62 through the electrical contact convex portion 622 to conduct electricity, thereby realizing the power connection of the socket assembly 2. At the same time, the elastic member 61 can also damp and buffer the axial shaking force of the wire reel 8, reduce the noise during the operation of the present invention, and ensure that the socket assembly 2 will not be powered off when the wire reel 8 rotates; in addition, when the wire reel 8 is rotating, the side of the wire reel 8 close to the fixed end 111 is kept sealed through the first sealing structure between the second annular convex portion 82 and the first annular convex portion 22. Similarly, the side of the wire reel 8 close to the connection end 112 is kept sealed through the second sealing structure between the inner wall of the shaft hole 81 and the outer wall of the straight shaft portion 11, thereby improving the waterproof and dustproof performance of the wire reel, and having the effects of improving the electrical connection stability of the present invention and improving the sealing performance of the wire reel.

[0041] The above is only a preferred embodiment of the present invention. Therefore, all equivalent changes or modifications made according to the structure, features and principles described in the scope of the present invention patent application are included in the scope of the present invention patent application.

Claims

1. A wire reel, comprising a bracket body (1), a socket assembly (2) and a wire spool (8) for winding a power cord, characterized in that: The support body (1) has a straight shaft portion (11), the straight shaft portion (11) includes a fixed end (111) and a connecting end (112), the socket assembly (2) is fixedly connected to the fixed end (111), the winding wheel (8) is provided with an axial hole (81), the winding wheel (8) is rotatably sleeved on the straight shaft portion (11) through the axial hole (81), a power supply disk (9) is coaxially fixedly provided on a side of the winding wheel (8) close to the fixed end (111), a power connection disk assembly (3) is fixedly provided on a side of the socket assembly (2) facing the power supply disk (9), the power supply disk (9) facing the socket assembly A plurality of power supply rings (91) are concentrically arranged on an end surface of one side of the socket assembly (2); a plurality of elastic power supply components (6) are arranged on the power supply panel assembly (3) corresponding to the power supply rings (91); the elastic power supply components (6) include an elastic member (61) and a plurality of conductive rings (62) electrically connected to the socket assembly (2); the conductive rings (62) are arranged in one-to-one correspondence with the power supply rings (91); the conductive rings (62) have a plurality of electrical contact protrusions (622); and the elastic member (61) has a movement tendency to push the electrical contact protrusions (622) of the conductive rings (62) to electrically contact the corresponding power supply rings (91); A first sealing structure is provided between the socket assembly (2) and the winding wheel (8), and a second sealing structure is provided between the inner wall of the shaft hole (81) close to the connecting end (112) and the outer wall of the straight shaft portion (11).

2. The winding reel according to claim 1, wherein: The power board assembly (3) has an annular chamber (30); the conductive ring (62) includes an annular conductive portion (621); a plurality of electrical contact protrusions (622) are integrally arranged on the annular conductive portion (621); the annular conductive portion (621) is floatingly arranged in the annular chamber (30); a plurality of through holes (52) are opened on a side of the power board assembly (3) facing the power supply board (9); the through holes (52) are connected to the annular chamber (30); the elastic member (61) is built into the annular chamber (30); and the elastic member (61) is used to push the electrical contact protrusions (622) to extend out of the through holes (52).

3. The coiling reel according to claim 2, characterized in that: A plurality of the elastic members (61) are arranged in the annular chamber (30) at equal intervals corresponding to the electric contact protrusions (622); a plurality of the electric contact protrusions (622) are distributed in the circumference of the annular conductive portion (621) at equal intervals, and the electric contact protrusions (622) on adjacent conductive rings (62) are arranged in a staggered manner.

4. A wire reel according to claim 2, characterized in that: The power board assembly (3) comprises a left cover (4) and a right cover (5); the left cover (4) is provided with a first circular groove (41) corresponding to the annular conductive portion (621); the right cover (5) is provided with a second circular groove (51) corresponding to the annular conductive portion (621); when the left cover (4) and the right cover (5) are fixedly connected, the first circular groove (41) and the second circular groove (51) are aligned with each other and together form the annular chamber (30).

5. The conductive structure of a wire reel according to claim 4, wherein: The elastic member (61) is provided as a spring. The left cover (4) is provided with a positioning post (42) corresponding to the first end of the spring. The electrical contact convex part (622) is provided with a positioning groove (6221) corresponding to the second end of the spring. The first end of the spring is sleeved outside the positioning post (42) and abuts against the left cover (4), and the second end of the spring abuts inside the positioning groove (6221).

6. The winding reel according to claim 1, characterized in that: An inner ring annular rib (55) extends towards one side of the power supply disk (9) from the middle of the power connection disk assembly (3). The power supply disk (9) is provided with an annular sleeve (92) corresponding to the inner ring annular rib (55). The annular sleeve (92) is rotatably sleeved outside the inner ring annular rib (55). And one end of the inner ring annular rib (55) far from the power connection disk assembly (3) extends radially outwards to form an anti-disengagement part (551). The inner ring annular rib (55) is in anti-disengagement cooperation with the annular sleeve (92) through the anti-disengagement part (551).

7. The winding reel according to claim 1, wherein: An outer ring annular rib (54) extends towards one side of the power supply disk (9) from the edge of the power connection disk assembly (3). The outer ring annular rib (54) encloses a rotation groove (541) on the power connection disk assembly (3). The power supply disk (9) is rotatably arranged in the rotation groove (541).

8. A wire reel according to claim 1, characterized in that: The socket assembly (2) extends axially along the straight shaft part (11) to form a first annular convex part (22). The reel (8) extends a second annular convex part (82) corresponding to the first annular convex part (22). The first annular convex part (22) is in rotational cooperation with the second annular convex part (82). The first sealing structure is coaxially arranged between the first annular convex part (22) and the second annular convex part (82).

9. The winding reel according to claim 8, wherein: Both the first sealing structure and the second sealing structure are provided as annular seals (10). The annular seal (10) includes a connecting part (103), an outer ring sealing part (101) and an inner ring sealing part (102) located on both sides of the connecting part (103). The outer ring sealing part (101) is in sealing fit with the inner wall of the corresponding first annular convex part (22) or the shaft hole (81). The inner ring sealing part (102) is in contact and cooperation with the outer wall of the corresponding second annular convex part (82) or the straight shaft part (11).

10. A wire reel according to claim 9, characterized in that: A buffer gap (104) is formed between the outer ring sealing part (101) and the inner ring sealing part (102). An annular spring (105) is arranged in the buffer gap (104). The annular spring (105) has a movement tendency to lock the inner ring sealing part (102) to the second annular convex part (82) or the straight shaft part (11).

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