Device for preventing plug wire from loosening and headphone thereof

Abstract

The utility model relates to the technical field of earphones, in particular to a device for preventing a plug wire from loosening and a headphone thereof, the device comprises a plug wire, a locking sleeve and a nut, one end of the plug wire is provided with a data plug, the data plug is inserted into the locking sleeve, the locking sleeve comprises a conical sleeve and an external thread sleeve, and the surface of the external thread sleeve is provided with external threads. A contraction port of the conical sleeve is connected with the inlet end of the external thread sleeve, the thread depth of the external thread is gradually shallower from the inlet end to the tail end, the external thread sleeve is provided with at least two connecting notches, the connecting notches are evenly distributed on the external thread in the circumferential direction, and the nut is arranged at the inlet end of the external thread in a sleeving mode. The external thread sleeve is contracted, so that the position of the tail end of the data plug is limited, the data plug cannot be pulled out of the locking sleeve, the situation that a plug-pull line loosens and falls off from the headset due to external force when a user uses the headset, and poor contact is caused can be avoided, and the use experience of the user is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of headphone technology, and in particular to a device for preventing loosening of the plug-in cable and its headphones. Background Technology

[0002] In the current headphone market, headphones with detachable cables are favored by some users due to their advantages such as easy cable replacement and portability. However, this design has revealed many problems in actual use, the most prominent of which is that the headphone plug and unplugging points are prone to loosening. Because headphones are frequently subjected to various external forces during use, such as pulling during wearing and frequent plugging and unplugging of the cable, the connection stability of the plug and unplugging points is severely affected. Once the plug and unplugging points become loose, poor contact can easily occur, resulting in intermittent sound, sound quality distortion, and other phenomena, greatly impacting the user's listening experience. Utility Model Content

[0003] To overcome the shortcomings mentioned above, this utility model aims to provide a technical solution that can solve the above problems.

[0004] A device for preventing loosening of a plug-in cable includes a plug-in cable, a locking sleeve, and a nut. One end of the plug-in cable is provided with a data plug, which is inserted into the locking sleeve. The locking sleeve includes a tapered sleeve and an externally threaded sleeve with external threads on its surface. The constricted end of the tapered sleeve is connected to the inlet end of the externally threaded sleeve. The thread depth of the external threads gradually decreases from the inlet end to the outlet end. The externally threaded sleeve has at least two connection notches, which are circumferentially distributed on the external threads. The nut is fitted onto the inlet end of the external threads.

[0005] As a further embodiment of this utility model: the inner wall of the external threaded sleeve is provided with an elastic clamping block, and the thickness of the elastic clamping block gradually increases from the inlet end to the end of the external threaded sleeve.

[0006] As a further embodiment of this utility model, the outer surface of the nut is provided with anti-slip texture.

[0007] As a further embodiment of this utility model: the inner wall of the conical sleeve is provided with at least two guide grooves, and the outer surface of the data plug is provided with corresponding guide protrusions, and the guide grooves are respectively connected to the connection notch.

[0008] As a further embodiment of this utility model: the external threaded sleeve has 4 connection notches, which are evenly distributed circumferentially on the external thread.

[0009] As a further embodiment of this utility model, the external threaded sleeve and the tapered sleeve are integrally formed.

[0010] As a further embodiment of this utility model: a headset, including the aforementioned anti-loosening device for plug-in cables, and also including a headband, a first earphone, and a second earphone, one end of the headband is hinged to the first earphone, the other end of the headband is hinged to the second earphone, the lower surface of the first earphone is provided with a data port, and the locking sleeve is installed on the lower surface of the first earphone and communicates with the data port.

[0011] As a further embodiment of this utility model: the data port is provided with a sealing ring, the surface of the data port is provided with a water-proof groove, the inner wall of the water-proof groove is provided with a retaining strip, the sealing ring has a V-shaped cross section, and the sealing ring is retained in the water-proof groove.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. By setting up a device to prevent loosening of the plug cable, the nut is gradually moved towards the external threaded sleeve, causing the external threaded sleeve to contract and thus restricting the position of the data plug end, making it impossible to pull the data plug out of the locking sleeve. This can prevent the plug cable from loosening and falling off the headphones due to external force during use, resulting in poor contact and ensuring the user experience.

[0014] 2. By setting a water-proof groove on the surface of the data port and installing a sealing ring inside it, when the data plug is inserted into the data port, it will squeeze the sealing ring. At this time, the sealing ring will expand radially under pressure and occupy the gap between the data plug and the data port, thereby achieving the effect of sealing and preventing water.

[0015] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the locking sleeve of this utility model.

[0018] Figure 2 This is an exploded view of the locking sleeve and plug-in cable of this utility model.

[0019] Figure 3 This is a structural schematic diagram of the headphone of this utility model.

[0020] Figure 4 This is an exploded view of the headphone, retractable sleeve, and plug-in cable of this utility model.

[0021] Figure 5 This is a structural schematic diagram of the nut of this utility model.

[0022] Figure 6 yes Figure 5 A cross-sectional view of section AA.

[0023] Figure 7 Figure 6 A magnified view of a section at point B.

[0024] In the diagram: 1. Plug-in cable; 11. Data plug; 111. Guide protrusion; 2. Locking sleeve; 21. Conical sleeve; 211. Guide groove; 22. External thread sleeve; 223. External thread; 224. Connection notch; 3. Nut; 31. Anti-slip texture; 4. Elastic clamping block; 5. Headband support; 6. First earpiece; 7. Second earpiece; 61. Data port; 611. Sealing ring; 612. Waterproof groove; 613. Locking strip. Detailed Implementation

[0025] The technical solutions in the embodiments of this utility model will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0026] In the description of the embodiments of this utility model, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the embodiments of this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0027] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of embodiments of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0028] In this embodiment of the invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this embodiment of the invention according to the specific circumstances.

[0029] Please see Figures 1-6 In this embodiment of the present invention, a device for preventing loosening of the plug-in cable 1 includes a plug-in cable 1, a locking sleeve 2, and a nut 3. One end of the plug-in cable 1 is provided with a data plug 11, and the locking sleeve 2 is inserted into the data plug 11. The locking sleeve 2 includes a tapered sleeve 21 and an externally threaded sleeve 22 with external threads 223 on its surface. The constricted end of the tapered sleeve 21 is connected to the inlet end of the externally threaded sleeve 22. The thread depth of the external threads 223 gradually decreases from the inlet end to the outlet end. The externally threaded sleeve 22 has at least two connection notches 224, which are circumferentially distributed on the external threads 223. The nut 3 is sleeved on the inlet end of the external threads 223 for engaging with the external threads 223. Specifically, the locking sleeve 2 can be made of a material with a certain degree of toughness, including but not limited to PE (polyethylene), PC (polycarbonate), and PE (polyethylene).

[0030] The working principle of this embodiment is as follows: By setting a device to prevent the plug-in cable 1 from loosening, when the nut 3 is turned, it moves along the external thread sleeve 22. Due to the change in thread depth, the external thread sleeve 22 is subjected to radial pressure and contracts inward. It generates elastic deformation through the connection notch 224, squeezing the data plug 11, making it impossible for the user to pull the data plug 11 out of the locking sleeve 2. When the user rotates the nut 3 in the opposite direction to move it back, the external thread 223 will gradually return to its original state due to its own material. At this time, the user can pull the data plug 11 out of the locking sleeve 2. This can prevent the plug-in cable 1 from loosening and falling off the headphone due to external force during use, resulting in poor contact and ensuring the user's user experience.

[0031] like Figures 1-2 and Figures 5-6 As shown, the inlet end is located at the lower end of the external thread sleeve 22, and the end end is located at the upper end of the external thread sleeve 22. The thread depth of the external thread 223 gradually becomes shallower from the inlet end to the end, that is, it gradually becomes shallower from bottom to top.

[0032] Further as Figures 1-2 and Figures 5-6As shown in this embodiment of the invention, the inner wall of the external threaded sleeve 22 is provided with an elastic clamping block 4. The thickness of the elastic clamping block 4 gradually increases from the inlet end to the end end of the external threaded sleeve 22. The outer surface of the nut 3 is provided with anti-slip texture 31, which can play the role of anti-slip and increasing friction. Specifically, the material of the elastic clamping block 4 can be wear-resistant rubber, such as natural rubber. The connection between the elastic clamping block 4 and the inner wall of the external thread 223 includes, but is not limited to, embedding, bonding and threaded connection. The thickness of the elastic clamping block 4 increases from 1mm to 3mm from the inlet end to the end. The elastic clamping block 4 deforms synchronously with the contraction of the external threaded sleeve 22, which can provide a progressive clamping force.

[0033] Further as Figures 1-2 As shown in this embodiment of the invention, the inner wall of the tapered sleeve 21 is provided with at least two guide grooves 211, and the outer surface of the data plug 11 is provided with corresponding guide protrusions 111. The guide grooves 211 are respectively connected to the connection notch 224. The working principle of this embodiment is as follows: when the data plug 11 is inserted, the guide protrusions 111 are engaged at the connection notch 224. As the data plug 11 gradually penetrates deeper, the guide protrusions 111 slide into the guide grooves 211, forcing the guide path to prevent the data plug 11 from being inserted at an angle, thus reducing the risk of interface damage.

[0034] Further as Figures 1-2 and Figures 4-5 As shown in this embodiment of the invention, the external threaded sleeve 22 has four connecting notches 224, which are evenly distributed circumferentially on the external thread 223. Providing connecting notches 224 at the external threaded sleeve 22 facilitates shrinkage, and the multi-notch design ensures uniform stress distribution on the sleeve, avoiding localized stress concentration that could lead to plastic deformation.

[0035] Further as Figures 4-5 As shown in this embodiment of the invention, the external threaded sleeve 22 and the tapered sleeve 21 are integrally formed. The seamless design improves overall rigidity, withstands high-frequency insertion and extraction operations, and avoids stress concentration leading to cracking.

[0036] Further as Figures 3-4 As shown in this embodiment of the invention, a headset includes the aforementioned device for preventing the plug-in cable 1 from loosening, a headset bracket 5, a first earphone 6, and a second earphone 7. One end of the headset bracket 5 is hinged to the first earphone 6, and the other end of the headset bracket 5 is hinged to the second earphone 7. The lower surface of the first earphone 6 is provided with a data port 61, and a locking sleeve 2 is installed on the lower surface of the first earphone 6 and communicates with the data port 61. Specifically, the connection between the locking sleeve 2 and the headset includes, but is not limited to, integral injection molding, snap-fit ​​connection, threaded connection, and adhesive connection.

[0037] Further as Figures 4-7As shown, in this embodiment of the present invention, the data port 61 is provided with a sealing ring 611, and a water-proof groove 612 is formed on the surface of the data port 61. A retaining strip 613 is provided on the inner wall of the water-proof groove 612. The sealing ring 611 has a V-shaped cross-section and is secured within the water-proof groove 612, so that the V-shaped groove of the sealing ring 611 is secured to the retaining strip 613. The working principle of this embodiment is as follows: By setting a water-proof groove 612 on the surface of the data port 61 and installing the sealing ring 611 inside it, when the data plug 11 is inserted into the data port 61, it will compress the sealing ring 611. At this time, the sealing ring 611 expands radially under compression, occupying the gap between the data plug 11 and the data port 61, thereby achieving a sealing and water-proof effect.

[0038] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention.

Claims

1. A device for preventing the loosening of a plug wire, characterized in that The device comprises a plug-in line (1), a locking sleeve (2) and a nut (3), one end of the plug-in line (1) is provided with a data plug (11), the data plug (11) is inserted into the locking sleeve (2), the locking sleeve (2) comprises a tapered sleeve (21) and an external thread sleeve (22) provided with external threads (223) on the surface, the tapered sleeve (21) is connected to the inlet end of the external thread sleeve (22), the thread depth of the external threads (223) gradually becomes shallow from the inlet end to the end, the external thread sleeve (22) is provided with at least two connecting notches (224), the connecting notches (224) are evenly distributed in the external threads (223) in the circumferential direction, and the nut (3) is sleeved on the inlet end of the external threads (223).

2. The device of claim 1, wherein, The inner wall of the external thread sleeve (22) is provided with elastic clamping blocks (4), and the thickness of the elastic clamping blocks (4) gradually increases from the inlet end to the end of the external thread sleeve (22).

3. The device of claim 1, wherein, The outer surface of the nut (3) is provided with anti-skid lines (31).

4. The device of claim 1, wherein, The inner wall of the tapered sleeve (21) is provided with at least two guide grooves (211), the outer surface of the data plug (11) is correspondingly provided with guide protrusions (111), and the guide grooves (211) are respectively connected to the connecting notches (224).

5. The device of claim 1, wherein, The external thread sleeve (22) is provided with four connecting notches (224).

6. The device of claim 1, wherein, The external thread sleeve (22) and the tapered sleeve (21) are integrally formed.

7. A headset, characterized in that The device comprises the device for preventing the plug-in line from loosening according to any one of claims 1 to 6, a head-mounted support (5), a first earphone (6) and a second earphone (7), one end of the head-mounted support (5) is hingedly connected to the first earphone (6), the other end of the head-mounted support (5) is hingedly connected to the second earphone (7), the lower surface of the first earphone (6) is provided with a data socket (61), and the locking sleeve (2) is installed on the lower surface of the first earphone (6) and is connected to the data socket (61).

8. The headset of claim 7, wherein, The data socket (61) is provided with a sealing ring (611), the socket surface of the data socket (61) is provided with a water separation groove (612), the inner wall of the water separation groove (612) is provided with a clamping strip (613), the cross section of the sealing ring (611) is V-shaped, and the sealing ring (611) is clamped in the water separation groove (612).

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