Coil

Abstract

The utility model provides a coil which comprises an upper shell and a lower shell which are mutually buckled and fixedly connected, a rotatable winding roll is arranged between the upper shell and the lower shell, a coil spring is arranged in the winding roll, one end of the coil spring is fixedly connected with the lower shell, and the other end of the coil spring is fixedly connected with the winding roll. A circular first circuit board is arranged on the inner side face of the lower shell and is coaxial with the winding roll. A second circuit board is arranged on the side face, facing the lower shell, of the winding roll, a power connection elastic piece is arranged on the second circuit board, one end is electrically connected with the second circuit board, and the other end is in elastic contact with the first circuit board. The first circuit board is provided with an annular power connection area, when the winding roll rotates, the power connection elastic piece moves along the annular power connection area, and the electric connection state is kept. The wire rod is electrically connected with the second circuit board, and the external wire is electrically connected with the first circuit board. According to the design, the circuit boards and the power connection elastic pieces in elastic contact are arranged at different positions, it is ensured that stable connection can still be achieved when the winding roll rotates, wire storage and use are facilitated, and practicability is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a winding structure technical field, concretely relates to a coil. BACKGROUND

[0002] With the wide application of electronic products, the power cord, data line, charging cord, earphone cord and other slender wires of electronic products become an indispensable part in people's daily life. However, due to the slender structure of these wires, they are prone to winding and knotting during use and storage. This not only brings many inconveniences to users when using, but also may damage the wires due to excessive winding, affecting their service life and performance.

[0003] Currently, in order to solve the problem of wire winding and knotting, a wire winder is usually used for storage. The wire winder generally consists of a shell, a rotatable winding disc and a winding spring. The wire can be wound in the wire winder when not in use, and can be pulled outwards when in use. For example, the wire winder disclosed in the patent with the patent authorization announcement number CN 220950683 U.

[0004] However, in actual application, how to design the circuit connection structure of the wire and the external wire becomes a technical problem to be solved. Since the wound wire itself bears the function of transmitting electrical signals and electrical energy, and the wire needs to be connected with the circuit board, the external wire also needs to be connected with the circuit board, therefore, a reasonable circuit connection structure is needed to ensure stable transmission of signals and electrical energy. SUMMARY

[0005] In view of the problems pointed out in the background art, the utility model provides a coil to solve the above technical problems.

[0006] The technical scheme of the utility model is as follows:

[0007] A coil, comprising an upper shell and a lower shell, the upper shell and the lower shell are fixedly connected by mutual buckling, a rotatable winding disc is arranged between the upper shell and the lower shell, a winding spring is arranged in the winding disc, one end of the winding spring is fixedly connected with the lower shell, the other end of the winding spring is fixedly connected with the winding disc,

[0008] A circular first circuit board is arranged on the inner side of the lower shell, and the first circuit board is coaxially arranged with the winding disc;

[0009] A second circuit board is arranged on the side of the winding disc facing the lower shell, and an electrically-conductive elastic sheet is arranged on the second circuit board, one end of the electrically-conductive elastic sheet is electrically connected with the second circuit board, and the other end of the electrically-conductive elastic sheet forms elastic contact with the first circuit board;

[0010] The first circuit board is provided with a ring-shaped electricity connection area corresponding to the other end of the electricity connection spring.

[0011] The first circuit board is provided with a ring-shaped electricity connection area corresponding to the other end of the electricity connection spring.

[0012] The first circuit board is provided with a ring-shaped electricity connection area corresponding to the other end of the electricity connection spring.

[0013] The first circuit board is provided with a ring-shaped electricity connection area corresponding to the other end of the electricity connection spring.

[0014] The first circuit board is provided with a ring-shaped electricity connection area corresponding to the other end of the electricity connection spring.

[0015] The first circuit board is provided with a ring-shaped electricity connection area corresponding to the other end of the electricity connection spring.

[0016] The first circuit board is provided with a ring-shaped electricity connection area corresponding to the other end of the electricity connection spring.

[0017] The first circuit board is provided with a ring-shaped electricity connection area corresponding to the other end of the electricity connection spring.

[0018] The first circuit board is provided with a ring-shaped electricity connection area corresponding to the other end of the electricity connection spring. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description only show some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from these drawings without creative labor.

[0020] Figure 1 The first circuit board is provided with a ring-shaped electricity connection area corresponding to the other end of the electricity connection spring. Figure One . The first circuit board is provided with a ring-shaped electricity connection area corresponding to the other end of the electricity connection spring.

[0021] Figure 2 The first circuit board is provided with a ring-shaped electricity connection area corresponding to the other end of the electricity connection spring.Figure Two .

[0022] Figure 3 A decomposition schematic of the circuit board of the utility model Figure One .

[0023] Figure 4 A decomposition schematic of the circuit board of the utility model Figure Two . DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0025] The following references are made Figures 1-4 The utility model is described as follows:

[0026] Embodiment: a coil, comprising an upper shell 1 and a lower shell 2, the upper shell 1 and the lower shell 2 are fixedly connected by mutual buckling, and the connection mode ensures the stability of the overall structure of the coil, preventing the shell from separating during use. The upper shell 1 and the lower shell 2 are coaxially arranged, which makes the structure of the whole coil more regular and the operation of each component more smooth.

[0027] A rotatable winding disc 3 is arranged between the upper shell 1 and the lower shell 2, and the winding disc 3 is one of the core components of the coil, which functions to wind the wire 11 and realize the storage and release of the wire. The center of the lower shell 2 is provided with a connecting column 9, and the center of the winding disc 3 is provided with a connecting hole 10, the connecting column 9 is connected in the connecting hole 10, and the connecting mode enables the winding disc 3 to be stably installed on the lower shell 2 and can freely rotate around the connecting column 9.

[0028] A coil spring is arranged in the winding disc 3, one end of the coil spring is fixedly connected with the connecting column 9, and the other end of the coil spring is fixedly connected with the winding disc 3. The function of the coil spring is to store energy when the wire is pulled out, and when the external force disappears, the coil spring releases energy to drive the winding disc 3 to rotate reversely and automatically wind up the wire. This design makes the storage of the wire more convenient and fast, and improves the user's experience.

[0029] One end of the wire 11 is fixedly connected with the winding reel 3, and the wire 11 is wound on the winding reel 3. It is ensured that the wire will not be separated from the winding reel 3 during winding and releasing. The wire 11 is wound on the winding reel 3, and when the wire needs to be used, the user can pull the wire outward, the winding reel 3 rotates accordingly, and the coil spring is stretched to store energy; after use, the coil spring releases energy to drive the winding reel 3 to rotate in the opposite direction, and the wire is automatically wound up, realizing the automatic storage function of the wire.

[0030] A circular first circuit board 5 is fixedly arranged on the inner side of the lower shell 2, and the first circuit board 5 is coaxially arranged with the winding reel 3. This design ensures the symmetry and stability of the entire structure, and makes the circuit connection more reasonable in spatial layout.

[0031] The second circuit board 6 is arranged on the side of the winding reel 3 facing the lower shell 2, and the second circuit board 6 is provided with a power contact spring 7. One end of the power contact spring 7 is electrically connected with the second circuit board 6, and the other end of the power contact spring 7 is bent towards the first circuit board 5 and forms an elastic contact with the first circuit board 5. This elastic contact design is very ingenious, which can ensure that the power contact spring 7 always maintains good contact with the first circuit board 5 during the rotation of the winding reel 3, thereby ensuring the smoothness of the circuit.

[0032] The first circuit board 5 is provided with a ring-shaped power contact area 8 corresponding to the other end of the power contact spring 7. When the winding reel 3 rotates, the other end of the power contact spring 7 will move along the ring-shaped power contact area 8. This design ensures that the power contact spring 7 can always be in contact with the power contact area 8 regardless of the rotation of the winding reel 3, thereby forming a stable electrical connection.

[0033] In order to further improve the connection point of the electrical connection, the power contact spring 7 is provided with multiple power contact springs. These power contact springs 7 are arranged at intervals in the radial direction of the winding reel 3, and the corresponding first circuit board 5 is provided with multiple power contact areas 8 corresponding to the power contact springs 7. The arrangement of multiple power contact springs 7 and power contact areas 8 increases the connection points of the circuit connection.

[0034] It also includes a wire 11, one end of which is electrically connected with the second circuit board 6.

[0035] It also includes an external wire 12, one end of which is electrically connected with the first circuit board 5.

[0036] In the design of the coil, the wire 11 is electrically connected with the second circuit board 6, and the external wire 12 is electrically connected with the first circuit board 5. In this way, the electrical connection between the wire 11 and the external wire 12 is realized. This connection method not only facilitates the use and storage of the wire, but also ensures that the electrical connection between the wire 11 and the external wire 12 remains stable during the rotation of the winding reel 3, providing reliable power transmission and signal transmission functions for users

[0037] The lower shell 2 is provided with an opening 13, which exposes the first circuit board 5, so as to facilitate the connection between the external wire 12 and the first circuit board 5. This design provides convenience for the connection of the external wire, and makes the connection process simpler and faster.

[0038] The winding reel 3 is provided with a groove 14 corresponding to the electrically-conductive elastic sheet 7, and the electrically-conductive elastic sheet 7 can enter the groove 14 when the electrically-conductive elastic sheet 7 is elastically deformed. This groove is designed to adapt to the elastic deformation of the electrically-conductive elastic sheet. During the rotation of the winding reel, the electrically-conductive elastic sheet may be subjected to forces in different directions, and thus elastically deformed. The existence of the groove provides a containing space for the electrically-conductive elastic sheet, so that the electrically-conductive elastic sheet does not interfere with other parts of the winding reel when elastically deformed, thereby ensuring the normal work of the electrically-conductive elastic sheet.

[0039] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A coil, comprising an upper shell (1) and a lower shell (2), the upper shell (1) and the lower shell (2) being fixedly connected to each other by buckling, a rotatable winding drum (3) being provided between the upper shell (1) and the lower shell (2), a coil spring being provided in the winding drum (3), one end of the coil spring being fixedly connected to the lower shell (2), and the other end of the coil spring being fixedly connected to the winding drum (3), characterized in that: A circular first circuit board (5) is provided on the inner side surface of the lower shell (2), and the first circuit board (5) is coaxially arranged with the cable reel (3); A second circuit board (6) is provided on one side of the cable reel (3) facing the lower shell (2) for electrical connection, and an electrical connection spring (7) is provided on the second circuit board (6), one end of the electrical connection spring (7) forms elastic contact with the second circuit board (6), and the other end of the electrical connection spring (7) forms elastic contact with the first circuit board (5); The first circuit board (5) is provided with an annular power connection area (8) corresponding to the other end of the power connection spring (7); when the winding reel (3) rotates, the other end of the power connection spring (7) moves along the annular power connection area (8).

2. A coil according to claim 1, characterized in that: There are a plurality of power connection springs (7), which are arranged at intervals in the radial direction of the cable reel (3), and a plurality of power connection areas (8) corresponding to the power connection springs (7) are provided on the corresponding first circuit board (5).

3. A coil according to claim 2, characterized in that: A connecting column (9) is provided at the center of the lower shell (2), a connecting hole (10) is provided at the center of the winding drum (3), the connecting column (9) is connected to the connecting hole (10), and one end of the coil spring is fixedly connected to the connecting column (9).

4. The coil according to claim 2, wherein: It also includes a wire (11), one end of which is electrically connected to the second circuit board (6).

5. The coil according to claim 2, characterized in that: It also includes an external wire (12), one end of which is electrically connected to the first circuit board (5).

6. The coil according to claim 2, characterized in that: The lower shell (2) is provided with an opening (13).

7. The coil according to claim 2, characterized in that: The cable reel (3) is provided with a groove (14) corresponding to the power connection spring (7).

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