Single-pull winder mechanism

Abstract

The utility model relates to the technical field of winders, in particular to a single-pull winder mechanism which comprises an upper shell, a lower shell and a wire coil, the inner side of the upper shell is rotationally connected with a winding assembly used for containing the wire coil, and the inner side of the upper shell is provided with a positioning assembly used for locking after the wire coil is wound or released. A reset assembly used for automatically rewinding a wire coil is arranged between the upper shell and the lower shell, a connecting assembly is arranged between the upper shell and the lower shell, wire outlets are formed in the opposite sides of the upper shell and the outer shell respectively and are symmetrical to each other, one end of the wire coil is located between the two wire outlets, and the wire winding assembly comprises a wire coil and a winding reel. A first annular guide rail, a second annular guide rail and an arc-shaped block are fixedly installed on the side, away from the winding reel, of the wire coil, a notch is formed in the second annular guide rail, an arc-shaped clamping groove is formed in one side of the arc-shaped block, and the upper positioning assembly comprises a rotating block and a sliding column. Therefore, the convenience of the device is improved.

Description

Technical Field

[0001] This application relates to the field of cable reel technology, and in particular to a single-pull cable reel mechanism. Background Technology

[0002] Cable reels are used to store or release cables, such as data cables, charging cables, headphone cables, network cables, audio / video cables, and power cords. They are designed to retract cables for easy carrying and small storage space.

[0003] Existing devices are not very convenient because they do not allow for easy adjustment of the cable length when storing or releasing the cable. The cable can only be stretched or shortened normally. Utility Model Content

[0004] To address the shortcomings of existing technologies, the purpose of this application is to provide a single-pull cable reel mechanism that solves the problem of difficulty in adjusting the length of the cable, which only allows for normal lengthening or shortening, resulting in low device convenience.

[0005] The above-mentioned objective of this application is achieved through the following technical solution: a single-pull winding mechanism, including an upper shell, a lower shell, and a wire roll, wherein a winding assembly for placing the wire roll is rotatably connected to the inner side of the upper shell, a positioning assembly for locking after winding or releasing the wire roll is provided on the inner side of the upper shell, a reset assembly for automatically rewinding the wire roll is provided between the upper shell and the lower shell, a connecting assembly is provided between the upper shell and the lower shell, and wire outlets are respectively opened on the opposite side of the upper shell and the outer shell, and are symmetrical to each other, with one end of the wire roll located between the two wire outlets.

[0006] Furthermore, the winding assembly includes a spool and a winding drum. A fixing post is provided on the inner side of the lower shell, and the fixing post is rotatably connected to the winding drum. The spool is sleeved on the winding drum. The end of the winding drum away from the fixing post is fixedly connected to one side of the spool. A first annular guide rail, a second annular guide rail, and an arc-shaped block are fixedly installed on the side of the spool away from the winding drum. The second annular guide rail is located inside the first annular guide rail and has a notch. The arc-shaped block is located between the first and second annular guide rails and is located at the notch on the second annular guide rail. One side of the arc-shaped block has an arc-shaped groove. A rotating rod is fixedly connected to the inner side of the upper shell. The positioning assembly includes a rotating block and a sliding post. One side of the rotating block is rotatably connected to the rotating rod. One side of the sliding post is fixedly connected to the side of the rotating block away from the rotating rod. The other side of the sliding post abuts against the spool and is located between the first and second annular guide rails.

[0007] Furthermore, the reset assembly includes a flat reset spring and a connecting block. The connecting block is fixedly connected to the side of the coil near the lower shell. The flat reset spring is sleeved on the fixing post. The fixing post has a snap-fit ​​groove. The inner end of the flat reset spring is inserted into the snap-fit ​​groove. The outer end of the flat reset spring is fixed to the connecting block. The flat reset spring is located inside the coil.

[0008] Furthermore, a first PCB board is fixedly installed on the side of the coil away from the flat return spring, a bent spring connector is fixedly installed on one side of the first PCB board, a second PCB board is fixedly installed on the inner side of the upper shell, an annular metal piece is provided on one side of the second PCB board, the contact of the bent spring connector abuts against the annular metal piece, a connection port is provided on the top surface of the upper shell, and one end of the second PCB board is connected to the connection port.

[0009] Furthermore, the connecting assembly includes positioning posts and insertion holes. The positioning posts are fixedly connected to the inner side of the upper shell. There are several positioning posts arranged in a circular array on the inner side of the upper shell. The inner side of the lower shell has positioning holes. There are several positioning holes arranged in a circular array on the inner side of the lower shell. The positioning posts correspond one-to-one with the positioning holes. The positioning posts are inserted into the positioning holes. The insertion holes are fixedly connected to the inner side of the upper shell. The fixing posts pass through the first PCB board and the second PCB board and are inserted into the insertion holes.

[0010] Furthermore, one side of the insertion hole extends through the upper shell, and a threaded groove is provided on the top surface of the fixing post. A screw is inserted into the insertion hole, and the end of the screw near the fixing post is threaded into the threaded groove.

[0011] In summary, this application includes at least one of the following beneficial technical effects:

[0012] When the coil needs to be unwound, the extended end of the coil is pulled outwards. The coil drives the spool to rotate counterclockwise on the fixed post, simultaneously driving the reel to rotate synchronously. At this time, the reset component is compressed and stores energy. The sliding column slides along the first annular guide rail along the trajectory of the reel's rotation, pushing the rotating block to deflect around the rotating rod. After stretching to the target length, the coil is released. The reset component releases its elastic energy, driving the reel to rotate clockwise to rewind. During this process, when the sliding column slides along the first annular guide rail to the arc-shaped slot of the arc-shaped block, it is limited by the slot opening, stopping the reel's rotation, thus achieving... Precise length locking of the wire coil; a brief pull on the wire coil causes the sliding column to slide into the notch of the second annular guide rail under the guidance of the curved groove. After release, the wire coil continues to rotate clockwise under the action of the reset component, and the sliding column slides cyclically along the second annular guide rail until the wire coil is fully retracted. If it is necessary to stretch again, gently pull the wire coil to reset the sliding column from the left end of the notch to the first annular guide rail, and the length stretching operation can be repeated. By recording the number of times the sliding column engages with the curved groove, corresponding to the number of rotations of the wire coil, the amount of wire coil stretching can be intuitively calculated, improving the convenience of the device.

[0013] When the coil is pulled outward, the coil drives the connecting block to rotate counterclockwise, and the flat return spring is torsional and deformed, storing elastic potential energy. When the coil is released, the flat return spring returns to its original shape, driving the connecting block and the coil to rotate clockwise, thus realizing automatic winding of the coil. The flat return spring improves the convenience of the device. Attached Figure Description

[0014] Figure 1 This is an exploded view of the overall structure in the embodiment;

[0015] Figure 2 This is a diagram showing the connection relationship between the coil and the positioning component;

[0016] Figure 3 This is a schematic diagram of the upper shell structure;

[0017] Figure 4 This is a schematic diagram of the lower shell structure;

[0018] Figure 5 This is a diagram showing the connection relationship between the coil and the reset assembly.

[0019] Reference numerals: 1. Upper shell; 11. Cable outlet; 12. Rotating rod; 13. Connecting port; 2. Lower shell; 21. Fixing post; 211. Snap-fit ​​groove; 22. Positioning hole; 3. Wire reel; 4. Wire winding assembly; 41. Wire spool; 411. First annular guide rail; 412. Second annular guide rail; 413. Arc-shaped block; 414. Arc-shaped snap-fit ​​groove; 42. Wire reel; 43. First PCB board; 431. Bending spring connector; 44. Second PCB board; 441. Annular metal sheet; 5. Positioning assembly; 51. Rotating block; 52. Sliding post; 6. Reset assembly; 61. Flat return spring; 62. Connecting block; 7. Connecting assembly; 71. Positioning post; 72. Insertion hole; 73. Screw. Detailed Implementation

[0020] The present application will be further described in detail below with reference to the accompanying drawings.

[0021] Example, refer to Figures 1-5A single-pull winding mechanism includes an upper shell 1, a lower shell 2, and a wire spool 3. A winding assembly 4 for placing the wire spool 3 is rotatably connected to the inner side of the upper shell 1. A positioning assembly 5 for locking the wire spool 3 after winding or releasing is provided on the inner side of the upper shell 1. A reset assembly 6 for automatically rewinding the wire spool 3 is provided between the upper shell 1 and the lower shell 2. A connecting assembly 7 is provided between the upper shell 1 and the lower shell 2. A wire outlet 11 is opened on the side of the upper shell 1 opposite to the outer shell, and they are symmetrical to each other. One end of the wire spool 3 is located between the two wire outlets 11. The winding assembly 4 includes a spool 41 and a winding drum 42. A fixing post 21 is provided on the inner side of the lower shell 2. The fixing post 21 is rotatably connected to the winding drum 42. The spool 3 is sleeved on the winding drum 42. The end of the winding drum 42 away from the fixing post 21 is fixedly connected to one side of the spool 41. A first annular guide rail 411, a second annular guide rail 412, and an arc-shaped block 413 are fixedly installed on the side of the spool 41 away from the winding drum 42. The second annular guide rail 412 is located inside the first annular guide rail and has a notch. The arc-shaped block 413 is located inside the first annular guide rail. Between the first annular guide rail 411 and the second annular guide rail 412, and located at the notch on the second annular guide rail 412, the arc-shaped block 413 has an arc-shaped slot 414 on one side, and a rotating rod 12 is fixedly connected to the inner side of the upper shell 1. The positioning assembly 5 includes a rotating block 51 and a sliding column 52. One side of the rotating block 51 is rotatably connected to the rotating rod 12, and one side of the sliding column 52 is fixedly connected to the side of the rotating block 51 away from the rotating rod 12. The other side of the sliding column 52 abuts against the coil 41 and is located between the first annular guide rail 411 and the second annular guide rail 412.

[0022] Reference Figure 1 , Figure 2 as well as Figure 3When the coil 3 needs to be pulled out, the extended end of the coil 3 is pulled outward. The coil 3 drives the winding drum 42 to rotate counterclockwise on the fixed column 21, and at the same time drives the coil 41 to rotate synchronously. At this time, the reset component 6 is compressed and stores energy. The sliding column 52 slides along the first annular guide rail 411 with the rotation trajectory of the coil 41, and pushes the rotating block 51 to deflect around the rotating rod 12. After stretching to the target length, the coil 3 is released. The reset component 6 releases elastic energy and drives the coil 41 to rotate clockwise to rewind. During this process, when the sliding column 52 slides along the first annular guide rail 411 to the arc-shaped slot 414 of the arc-shaped block 413, it is limited by the slot opening and stops the rotation of the coil 41, thereby achieving precise length locking of the coil 3. Briefly pulling the coil 3 causes the sliding column 52 to slide. The column 52 is guided by the inclined surface of the arc-shaped groove 414 and slides into the notch of the second annular guide rail 412. After release, the coil 41 continues to rotate clockwise under the action of the reset component 6. The sliding column 52 slides cyclically along the second annular guide rail 412 until the coil 3 is fully retracted. If it needs to be stretched again, gently pull the coil 3 to reset the sliding column 52 from the left end of the notch to the first annular guide rail 411, and the fixed-length stretching operation can be repeated. The sliding column 52 switches positions between the first annular guide rail 411 and the second annular guide rail 412 according to the different rotation directions of the turntable 81. By recording the number of times the sliding column 52 engages with the arc-shaped groove 414, corresponding to the number of rotations of the coil 41, the stretching amount of the coil 3 can be intuitively calculated, which improves the convenience of the device.

[0023] Reference Figure 1 , Figure 2 as well as Figure 4 The reset assembly 6 includes a flat reset spring 61 and a connecting block 62. The connecting block 62 is fixedly connected to the side of the coil 41 near the lower shell 2. The flat reset spring 61 is sleeved on the fixing post 21, which has a snap-fit ​​groove 211. The inner end of the flat reset spring 61 is inserted into the snap-fit ​​groove 211, and the outer end of the flat reset spring 61 is fixed to the connecting block 62. The flat reset spring 61 is located inside the coil 3. When the coil 3 is pulled outward, the coil 41 drives the connecting block 62 to rotate counterclockwise, and the flat reset spring 61 is torsional deformed, storing elastic potential energy. When the coil 3 is released, the flat reset spring 61 returns to its original shape, driving the connecting block 62 and the coil 41 to rotate clockwise, realizing the automatic winding of the coil 3. The flat reset spring 61 improves the convenience of the device.

[0024] Reference Figure 1 as well as Figure 3A first PCB board 43 is fixedly mounted on the side of the coil 41 away from the flat return spring 61. A bent spring connector 431 is fixedly mounted on one side of the first PCB board 43. A second PCB board 44 is fixedly mounted on the inner side of the upper shell 1. An annular metal piece 441 is formed on one side of the second PCB board 44. The contact of the bent spring connector 431 abuts against the annular metal piece 441. A connection port 13 is provided on the top surface of the upper shell 1. One end of the second PCB board 44 is connected to the connection port 13. When using the device, the first PCB board 43 is fixed on the side of the coil 41 away from the flat return spring 61 for integrated circuits or signal transmission. The bent spring connector 431 maintains sliding contact with the annular metal piece 441 of the second PCB board 44 to ensure stable electrical connection during rotation. The external circuit is then connected to one end of the connection port 13 through the second PCB board 44, improving the convenience of the device.

[0025] Reference Figure 1 , Figure 3 as well as Figure 4 The connecting component 7 includes positioning posts 71 and insertion holes 72. Positioning posts 71 are fixedly connected to the inner side of the upper shell 1. Several positioning posts 71 are arranged in a circular array on the inner side of the upper shell 1. Positioning holes 22 are provided on the inner side of the lower shell 2. Several positioning holes 22 are arranged in a circular array on the inner side of the lower shell 2. Each positioning post 71 corresponds to one positioning hole 22. The positioning posts 71 are inserted into the positioning holes 22. The insertion holes 72 are fixedly connected to the inner side of the upper shell 1. Fixing posts 21 pass through the first PCB board 43 and the second PCB board 44 and are inserted into the insertion holes 72. When it is necessary to assemble the upper shell 1 and the lower shell 2 together, the positioning posts 71 are inserted into the positioning holes 22, and the fixing posts 21 are inserted into the insertion holes 72, completing the merging of the upper shell 1 and the lower shell 2.

[0026] Reference Figure 1 One side of the insertion hole 72 extends through the upper shell 1. A threaded groove is provided on the top surface of the fixing post 21. A screw 73 is inserted into the insertion hole 72, and the end of the screw 73 near the fixing post 21 is threaded into the threaded groove. When the upper shell 1 and the lower shell 2 are joined, the screw 73 is inserted into the insertion hole 72 and threaded into the threaded groove, so that the upper shell 1 and the lower shell 2 are joined and locked.

[0027] Working principle:

[0028] 1. When it is necessary to pull out the coil 3, pull the extended end of the coil 3 outward. The coil 3 drives the winding drum 42 to rotate counterclockwise on the fixed column 21, and at the same time drives the coil 41 to rotate synchronously. At this time, the flat return spring 61 is compressed and stores energy. The sliding column 52 slides along the first annular guide rail 411 with the rotation trajectory of the coil 41 and pushes the rotating block 51 to deflect around the rotating rod 12. After stretching to the target length, the coil 3 is released. The flat return spring 61 releases its elastic energy and drives the coil 41 to rotate clockwise to rewind. During this process, when the sliding column 52 slides along the first annular guide rail 411 to the arc-shaped slot 414 of the arc-shaped block 413, it is limited by the slot and the coil 41 stops rotating, thereby achieving precise length locking of the coil 3.

[0029] 2. When it is necessary to retract the wire coil 3, briefly pull the wire coil 3 to guide the sliding column 52 into the notch of the second annular guide rail 412 by the inclined surface of the arc-shaped groove 414. After release, the wire coil 41 continues to rotate clockwise under the action of the flat return spring 61. The sliding column 52 slides cyclically along the second annular guide rail 412 until the wire coil 3 is fully retracted. If it is necessary to stretch it again, gently pull the wire coil 3 to reset the sliding column 52 from the left end of the notch to the first annular guide rail 411. The fixed-length stretching operation can be repeated. By recording the number of times the sliding column 52 engages with the arc-shaped groove 414, corresponding to the number of rotations of the wire coil 41, the stretching amount of the wire coil 3 can be intuitively calculated, which improves the convenience of the device.

[0030] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A single-pull winding mechanism, comprising an upper shell (1), a lower shell (2), and a winding (3), characterized in that: The inner side of the upper shell (1) is rotatably connected to a winding assembly (4) for placing a wire roll (3). The inner side of the upper shell (1) is provided with a positioning assembly (5) for locking after winding or releasing the wire roll (3). A reset assembly (6) for automatically rewinding the wire roll (3) is provided between the upper shell (1) and the lower shell (2). A connecting assembly (7) is provided between the upper shell (1) and the lower shell (2). The upper shell (1) and the lower shell (2) are respectively provided with wire outlets (11) on opposite sides and are symmetrical to each other. One end of the wire roll (3) is located between the two wire outlets (11).

2. The single-pull winding mechanism according to claim 1, characterized in that: The winding assembly (4) includes a spool (41) and a winding drum (42). A fixing post (21) is provided on the inner side of the lower shell (2). The fixing post (21) is rotatably connected to the winding drum (42). The spool (3) is sleeved on the winding drum (42). One end of the winding drum (42) away from the fixing post (21) is fixedly connected to one side of the spool (41). A first annular guide rail (411), a second annular guide rail (412), and an arc-shaped block (413) are fixedly installed on the side of the spool (41) away from the winding drum (42). The second annular guide rail (412) is located inside the first annular guide rail. A notch is provided on the second annular guide rail (412). The arc-shaped block (413) is located on the side of the winding drum (42). Between the first annular guide rail (411) and the second annular guide rail (412), and at the notch on the second annular guide rail (412), the arc-shaped block (413) has an arc-shaped slot (414) on one side, and a rotating rod (12) is fixedly connected to the inner side of the upper shell (1). The positioning component (5) includes a rotating block (51) and a sliding column (52). One side of the rotating block (51) is rotatably connected to the rotating rod (12), and one side of the sliding column (52) is fixedly connected to the side of the rotating block (51) away from the rotating rod (12). The other side of the sliding column (52) abuts against the coil (41) and is located between the first annular guide rail (411) and the second annular guide rail (412).

3. The single-pull winding mechanism according to claim 2, characterized in that: The reset assembly (6) includes a flat reset spring (61) and a connecting block (62). The connecting block (62) is fixedly connected to the side of the coil (41) near the lower shell (2). The flat reset spring (61) is sleeved on the fixing post (21). The fixing post (21) has a snap-fit ​​groove (211). The inner end of the flat reset spring (61) is inserted into the snap-fit ​​groove (211). The outer end of the flat reset spring (61) is fixed to the connecting block (62). The flat reset spring (61) is located inside the coil (3).

4. The single-pull winding mechanism according to claim 3, characterized in that: A first PCB board (43) is fixedly installed on the side of the coil (41) away from the flat return spring (61). A bent spring connector (431) is fixedly installed on one side of the first PCB board (43). A second PCB board (44) is fixedly installed on the inner side of the upper shell (1). An annular metal piece (441) is provided on one side of the second PCB board (44). The contact of the bent spring connector (431) abuts against the annular metal piece (441). A connection port (13) is provided on the top surface of the upper shell (1). One end of the second PCB board (44) is connected to the connection port (13).

5. A single-pull winding mechanism according to claim 4, characterized in that: The connecting component (7) includes positioning posts (71) and insertion holes (72). The positioning posts (71) are fixedly connected to the inner side of the upper shell (1). There are several positioning posts (71) arranged in a circular array on the inner side of the upper shell (1). The inner side of the lower shell (2) is provided with positioning holes (22). There are several positioning holes (22) arranged in a circular array on the inner side of the lower shell (2). Several positioning posts (71) correspond one-to-one with several positioning holes (22). The positioning posts (71) are inserted into the positioning holes (22). The insertion holes (72) are fixedly connected to the inner side of the upper shell (1). The fixing post (21) passes through the first PCB board (43) and the second PCB board (44) and is inserted into the insertion holes (72).

6. A single-pull winding mechanism according to claim 5, characterized in that: One side of the insertion hole (72) extends through the upper shell (1), and a threaded groove is provided on the top surface of the fixing post (21). A screw (73) is inserted into the insertion hole (72), and one end of the screw (73) near the fixing post (21) is threaded into the threaded groove.

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