Telescopic earphone cord

Abstract

The utility model relates to the technical field of earphones, and discloses a telescopic earphone cord, which comprises an earphone storage box and an earphone cord main body, the left side of the earphone storage box is fixedly connected with a limiting sleeve, the left side of the limiting sleeve is provided with a first reserved sleeve, the right side of the earphone storage box is fixedly connected with a second reserved sleeve, and the earphone cord main body is provided with a telescopic rod. A protective cover is mounted on the right side of the second reserved sleeve, a mounting column is fixedly connected to the center of the interior of the earphone storage box, a pressure spring is mounted outside the mounting column, and a protective sleeve is mounted outside the pressure spring. The telescopic earphone cable is placed in the protective sleeve, the earphone cable main body slides in the protective sleeve when being pulled, the protective sleeve can extrude the pressure spring after being extruded, the smooth layer in the protective sleeve can improve the moving smoothness of the earphone cable main body, and the earphone cable main body does not directly contact with the pressure spring; therefore, abrasion of the surface of the earphone cable body is reduced, durability of the earphone cable body is improved, and the problem that the earphone cable is seriously abraded is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of earphones, in particular to a retractable earphone cable. Background Art

[0002] An earphone uses a speaker close to the ear to convert it into audible sound waves. The earphone can be separated from the media player and can be connected only with a plug, enabling a person to listen to the sound alone without disturbing others. An earphone cable is a cable used to connect devices. To facilitate the storage of the earphone cable, a retractable earphone cable came into being.

[0003] After retrieval, most of the common retractable earphone cables on the market use a winding method to store the earphone cable inside the housing, and then use a spring assembly to achieve the telescopic reset of the earphone cable. However, the earphone cable is directly in contact with the spring assembly, and the edge of the spring assembly is relatively sharp, which is easy to scratch and cause wear to the earphone cable, thus affecting the service life of the earphone cable.

[0004] There is an urgent need for a retractable earphone cable to solve the technical defects mentioned in the above technology. Content of the Utility Model

[0005] The purpose of the utility model is to provide a retractable earphone cable to solve the problem of serious wear of the earphone cable mentioned in the above background art.

[0006] To achieve the above purpose, the utility model provides the following technical solution: A retractable earphone cable, including an earphone storage box and an earphone cable main body. A limit sleeve is fixedly connected to the left side of the earphone storage box, a first reserved sleeve is installed on the left side of the limit sleeve, a second reserved sleeve is fixedly connected to the right side of the earphone storage box, a protective cover is installed on the right side of the second reserved sleeve, a mounting column is fixedly connected to the central position inside the earphone storage box, a compression spring is installed outside the mounting column, a protective sleeve is installed outside the compression spring, an elastic sleeve is arranged outside the protective sleeve, a wear-resistant layer is arranged outside the elastic sleeve, a placement channel is arranged inside the protective sleeve, a smooth layer is arranged on the inner wall of the placement channel, a plug connector is arranged at the connection end of the earphone cable main body, the plug connector penetrates through the inside of the second reserved sleeve, and the earphone cable main body is embedded inside the placement channel.

[0007] Preferably, the protective sleeve is wound outside the compression spring, and the earphone end of the earphone cable main body penetrates through the inside of the first reserved sleeve.

[0008] Preferably, limit flanges are fixedly connected to the top and bottom inside the earphone storage box, and limit balls are movably connected to the top and bottom on the right side of the limit sleeve.

[0009] Preferably, a limiting chute is provided at the front end of the limiting sleeve, a limiting component is provided at the front end of the limiting sleeve, and a limiting pressing block is provided at the rear end of the limiting sleeve.

[0010] Preferably, the rear end of the limiting component is embedded inside the limiting chute and is slidably connected. A toothed block is provided inside the limiting chute, and the limiting component is fixedly connected to the limiting pressing block.

[0011] Preferably, mounting rods are fixedly connected to the top and bottom of the left side of the protective cover. Mounting slots are fixedly connected to the top and bottom of the second reserved sleeve. The rear end of the mounting rod is movably connected to a limiting rod.

[0012] Preferably, the mounting rod is embedded inside the mounting slot, and the limiting rod can be arranged on the left side of the mounting slot.

[0013] Preferably, four magnetic attraction pieces are fixedly connected to the front end of the earphone storage box, and the magnetic attraction pieces are annularly distributed at the front end of the earphone storage box.

[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows: The retractable earphone cable not only realizes the function of reducing the wear of the earphone cable, realizes the function of facilitating limiting, but also realizes the function of facilitating protection;

[0015] (1) By providing an earphone cable main body, a protective sleeve, a limiting baffle, an elastic sleeve, a wear-resistant layer, a placement channel and a smooth layer, the earphone cable main body can be placed inside the protective sleeve. When pulled, the earphone cable main body slides inside the protective sleeve. After the protective sleeve is squeezed, it will squeeze the compression spring. The smooth layer inside the protective sleeve can improve the smoothness of the movement of the earphone cable main body, and the earphone cable main body will not directly contact the compression spring, thereby reducing the wear on the surface of the earphone cable main body and improving the durability of the earphone cable main body. This structure realizes the function of reducing the wear of the earphone cable;

[0016] (2) By providing a limiting component, a limiting sleeve, a limiting pressing block and a limiting chute, when the earphone cable main body is pulled to a suitable use length, the limiting component can be pushed upward. The limiting component slides inside the limiting chute. Since there are limiting toothed blocks inside the limiting chute, the resistance to the movement of the limiting component is large and it is convenient for positioning. The limiting component drives the limiting pressing block to tightly press the first reserved sleeve, which can prevent the earphone cable main body from retracting into the earphone storage box. After pushing the limiting component downward, the earphone cable main body can be reset. This structure realizes the function of facilitating limiting;

[0017] (3) By providing a protective cover, a limiting rod, a mounting rod and a mounting slot, the protective cover can protect the plug on the main body of the headphone cable. When not in use, the protective cover can be installed on the second reserved sleeve. The mounting rod on the protective cover is inserted into the interior of the mounting slot, and then the limiting rod is rotated to fit against the side of the mounting slot for limiting. The protective cover can prevent the surface of the plug from getting wet and dusty, and this structure realizes the function of convenient protection. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a front sectional structure schematic diagram of the present utility model;

[0019] Figure 2 is a front structure schematic diagram of the present utility model;

[0020] Figure 3 of the present utility model Figure 1 is an enlarged structure schematic diagram at A in;

[0021] Figure 4 is a side sectional structure schematic diagram of the protective sleeve of the present utility model.

[0022] In the figure: 1, headphone storage box; 2, limiting component; 3, main body of headphone cable; 4, first reserved sleeve; 5, limiting sleeve; 6, limiting ball; 7, protective sleeve; 8, limiting retaining piece; 9, compression spring; 10, mounting post; 11, protective cover; 12, plug; 13, limiting pressing block; 14, limiting sliding groove; 15, magnetic attracting piece; 16, second reserved sleeve; 17, limiting rod; 18, mounting rod; 19, mounting slot; 20, elastic sleeve; 21, wear-resistant layer; 22, placing channel; 23, smooth layer. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0024] Embodiment 1: Please refer to Figures 1-4, A retractable headphone cable, comprising a headphone storage box 1 and a headphone cable main body 3. A limit sleeve 5 is fixedly connected to the left side of the headphone storage box 1. A first reserved sleeve 4 is installed on the left side of the limit sleeve 5. A second reserved sleeve 16 is fixedly connected to the right side of the headphone storage box 1. A protective cover 11 is installed on the right side of the second reserved sleeve 16. An installation post 10 is fixedly connected to the central position inside the headphone storage box 1. A compression spring 9 is installed outside the installation post 10. A protective sleeve 7 is installed outside the compression spring 9. An elastic sleeve 20 is arranged outside the protective sleeve 7. A wear-resistant layer 21 is arranged outside the elastic sleeve 20. A placement channel 22 is arranged inside the protective sleeve 7. A smooth layer 23 is arranged on the inner wall of the placement channel 22. A plug connector 12 is arranged at the connection end of the headphone cable main body 3. The plug connector 12 penetrates through the inside of the second reserved sleeve 16. The headphone cable main body 3 is embedded inside the placement channel 22;

[0025] The protective sleeve 7 is wound around the outside of the compression spring 9. The earplug end of the headphone cable main body 3 penetrates through the inside of the first reserved sleeve 4. Limit flappers 8 are fixedly connected to the top and bottom inside the headphone storage box 1. Limit balls 6 are movably connected to the top and bottom on the right side of the limit sleeve 5;

[0026] Specifically, as Figure 1 and Figure 4 shown, the headphone cable main body 3 can be placed inside the protective sleeve 7. When pulled, the headphone cable main body 3 slides inside the protective sleeve 7. After the protective sleeve 7 is squeezed, it will squeeze the compression spring 9. The smooth layer 23 inside the protective sleeve 7 can improve the smoothness of the movement of the headphone cable main body 3, and the headphone cable main body 3 will not directly contact the compression spring 9, thereby reducing the wear on the surface of the headphone cable main body 3 and improving the durability of the headphone cable main body 3.

[0027] Embodiment 2: A limit chute 14 is arranged at the front end of the limit sleeve 5. A limit component 2 is arranged at the front end of the limit sleeve 5. A limit pressure block 13 is arranged at the rear end of the limit sleeve 5. The rear end of the limit component 2 is embedded inside the limit chute 14 and is in sliding connection. Tooth blocks are arranged inside the limit chute 14. The limit component 2 and the limit pressure block 13 are fixedly connected;

[0028] Specifically, as Figure 1 and Figure 2 shown, when the headphone cable main body 3 is pulled to a suitable use length, the limit component 2 can be pushed upward. The limit component 2 slides inside the limit chute 14. Since there are limit tooth blocks inside the limit chute 14, the movement resistance of the limit component 2 is relatively large and it is convenient for positioning. The limit component 2 drives the limit pressure block 13 to tightly press the first reserved sleeve 4, which can prevent the headphone cable main body 3 from retracting into the headphone storage box 1.

[0029] Embodiment 3: The top and bottom of the left side of the protective cover 11 are fixedly connected with mounting rods 18, the top and bottom of the second reserved sleeve 16 are fixedly connected with mounting slots 19, the rear end of the mounting rod 18 is movably connected with a limiting rod 17, the mounting rod 18 is embedded inside the mounting slot 19, the limiting rod 17 can be arranged on the left side of the mounting slot 19, and four groups of magnetic attraction sheets 15 are fixedly connected to the front end of the earphone storage box 1, and the magnetic attraction sheets 15 are annularly distributed at the front end of the earphone storage box 1;

[0030] Specifically, as Figure 1 , Figure 2 and Figure 3 shown, in the case of not in use, the protective cover 11 can be installed on the second reserved sleeve 16, the mounting rod 18 on the protective cover 11 is inserted into the inside of the mounting slot 19, and then the limiting rod 17 is rotated to make it fit with the side of the mounting slot 19 for limiting. The protective cover 11 can prevent the surface of the plug connector 12 from getting wet and dusty, and the magnetic attraction sheets 15 on the earphone storage box 1 facilitate its adsorption and suspension.

[0031] Working principle: When the present utility model is in use, the protective cover 11 can be first disassembled and removed from the second reserved sleeve 16, then the plug connector 12 is connected to the device, and then when the earphone wire main body 3 is pulled to a suitable use length, the limiting assembly 2 is pushed upward, and the limiting assembly 2 slides inside the limiting chute 14. Since there are limiting teeth inside the limiting chute 14, the movement resistance of the limiting assembly 2 is large and it is convenient for positioning. The limiting assembly 2 drives the limiting pressure block 13 to press the first reserved sleeve 4 tightly, which can prevent the earphone wire main body 3 from retracting into the earphone storage box 1. The earphone wire main body 3 can be placed inside the protective sleeve 7. When pulling, the earphone wire main body 3 slides inside the protective sleeve 7. After the protective sleeve 7 is squeezed, it will squeeze the compression spring 9. The smooth layer 23 inside the protective sleeve 7 can improve the smoothness of the movement of the earphone wire main body 3, and the earphone wire main body 3 will not directly contact the compression spring 9, thereby reducing the wear on the surface of the earphone wire main body 3 and improving the durability of the earphone wire main body 3. This structure realizes the function of enhancing the durability of the earphone wire.

[0032] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above-mentioned exemplary embodiments, and without departing from the spirit or basic characteristics of the present utility model, the present utility model can be implemented in other specific forms. Therefore, in any aspect, the embodiments should be regarded as exemplary and non-limiting. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present utility model. Any reference signs in the claims should not be regarded as limiting the claimed rights.

Claims

1. A retractable earphone cable, comprising an earphone storage box (1) and an earphone cable body (3), characterized in that: The left side of the earphone storage box (1) is fixedly connected to a limiting sleeve (5), the left side of the limiting sleeve (5) is installed with a first reserved sleeve (4), the right side of the earphone storage box (1) is fixedly connected to a second reserved sleeve (16), the right side of the second reserved sleeve (16) is installed with a protective cover (11), a mounting column (10) is fixedly connected at the center position inside the earphone storage box (1), the outside of the mounting column (10) is installed with a compression spring (9), and the outside of the compression spring (9) is installed with a protective cover (7), an elastic sleeve (20) is arranged on the outside of the protective sleeve (7), a wear-resistant layer (21) is arranged on the outside of the elastic sleeve (20), a placement channel (22) is arranged on the inside of the protective sleeve (7), a smooth layer (23) is arranged on the inner wall of the placement channel (22), a plug connector (12) is arranged on the connection end of the headphone cable body (3), the plug connector (12) passes through the inside of the second reserved sleeve (16), and the headphone cable body (3) is embedded in the inside of the placement channel (22).

2. The retractable headphone cable according to claim 1, characterized in that: The protective sleeve (7) is wound around the outside of the compression spring (9), and the ear-entry end of the earphone cable body (3) passes through the inside of the first reserved sleeve (4).

3. The retractable headphone cable according to claim 1, characterized in that: The top and bottom ends of the earphone storage box (1) are fixedly connected to a limit stopper (8), and the top and bottom ends of the right side of the limit sleeve (5) are movably connected to a limit ball (6).

4. The retractable headphone cable according to claim 1, characterized in that: A limiting sliding groove (14) is arranged at the front end of the limiting sleeve (5), a limiting assembly (2) is arranged at the front end of the limiting sleeve (5), and a limiting pressing block (13) is arranged at the rear end of the limiting sleeve (5).

5. The retractable headphone cable according to claim 4, characterized in that: The rear end of the limiting component (2) is embedded in the limiting slide groove (14) in a sliding connection, a tooth block is provided inside the limiting slide groove (14), and the limiting component (2) is fixedly connected to the limiting pressure block (13).

6. The retractable headphone cable according to claim 1, characterized in that: The top and bottom ends of the left side of the protective cover (11) are fixedly connected to a mounting rod (18), the top and bottom ends of the second reserved sleeve (16) are fixedly connected to a mounting slot (19), and the rear end of the mounting rod (18) is movably connected to a limiting rod (17).

7. The retractable headphone cable according to claim 6, characterized in that: The installation rod (18) is embedded in the interior of the installation slot (19), and the limiting rod (17) can be arranged on the left side of the installation slot (19).

8. The retractable headphone cable according to claim 1, characterized in that: Four groups of magnetic sheets (15) are fixedly connected to the front end of the earphone storage box (1), and the magnetic sheets (15) are distributed in a ring shape at the front end of the earphone storage box (1).

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