Earphone arm telescoping mechanism and headphone

Abstract

The utility model discloses an earphone arm telescoping mechanism and a headphone, relates to the earphone technology field, the earphone arm telescoping mechanism comprises a headband skeleton and a telescoping structure, the telescoping structure comprises a housing, a support and a positioning member, the support is connected with the headband skeleton, the housing is slidably arranged on the support, and the positioning member is arranged on the support. The positioning piece is elastically connected with the support, and a plurality of positioning grooves are formed in the side, facing the support, of the shell. The shell can slide relative to the support and drive the positioning piece to be connected with any positioning groove in a clamped mode. The arrangement of the telescopic structure can reduce the impact of the groove wall of the positioning groove on the positioning piece, thereby improving the sliding hand feeling of the left and right sides of the earphone arm, and prolonging the service life of the earphone arm telescopic mechanism.

Description

Technical Field

[0001] The utility model relates to the technical field of earphones, in particular to an earphone arm telescopic mechanism and a headset. Background Art

[0002] Headphones are used to isolate and transmit audio, allowing users to listen to music, radio, movies or make voice calls without being disturbed by external noise. To accommodate users with different head sizes, the headphone arms of headphones are usually designed to be retractable, and users can adjust the length of the headphone arms as needed to ensure a comfortable wearing experience.

[0003] In the related art, the telescopic structure of the earphone arm includes a cover body and a telescopic part slidably connected in the cover body, the telescopic part is connected to the headband frame, the spring sheet is assembled to the telescopic part, and a plurality of clamping grooves matched with the protrusions of the spring sheet are arranged on the cover body, the cover body is connected to the ear shell, and the length of the earphone arm can be adjusted by moving the cover body; however, when the cover body is moved to realize the extension and retraction of the earphone arm, the protrusion of the spring sheet is impacted by the wall of the clamping groove, and the spring sheet is easily deformed after long-term use, and then the sliding feel of the left and right sides of the earphone arm is quite different, and the service life of the spring sheet will be greatly shortened. Utility Model Content

[0004] The main purpose of the utility model is to provide an earphone arm telescopic mechanism and a headphone, aiming to improve the sliding feel of the left and right sides of the earphone arm and prolong the service life of the earphone arm telescopic mechanism.

[0005] In order to achieve the above-mentioned purpose, the earphone arm telescopic mechanism proposed in the utility model comprises:

[0006] Headband frame; and

[0007] A telescopic structure, the telescopic structure comprising a shell, a bracket and a positioning member, the bracket being connected to the headband frame, the shell being slidably disposed on the bracket, the positioning member being elastically connected to the bracket, and a plurality of positioning grooves being disposed on a side of the shell facing the bracket;

[0008] Wherein, the housing can slide relative to the bracket and drive the positioning member to engage with any of the positioning grooves.

[0009] In one embodiment of the utility model, the bracket is provided with an installation cavity, a partial structure of the headband skeleton is passed through the bracket and accommodated in the installation cavity, the positioning member is passed through the bottom wall of the installation cavity and is elastically connected to the headband skeleton, and a partial structure of the positioning member can be exposed at the cavity opening of the installation cavity and be engaged with any of the positioning grooves.

[0010] In an embodiment of the present invention, a guide through groove is formed on the bottom wall of the installation cavity, and the positioning member is accommodated in the guide through groove.

[0011] In one embodiment of the utility model, the telescopic structure includes an elastic member, the inner peripheral wall of the guide groove is formed with a first limiting step, the outer peripheral wall of the positioning member is formed with a second limiting step, the first limiting step can be abutted against the second limiting step for limiting, the elastic member is sleeved on the positioning member, and is located between the second limiting step and the headband frame.

[0012] In an embodiment of the present invention, a plurality of protrusions are provided at intervals on a side of the second limiting step facing the first limiting step.

[0013] In an embodiment of the utility model, an arc transition section is provided between any two adjacent positioning grooves.

[0014] In one embodiment of the utility model, a first limiting protrusion and a second limiting protrusion are respectively formed at both ends of the bracket, and a third limiting protrusion is formed at one end of the shell close to the bracket, and the third limiting protrusion can be respectively abutted and limited with the first limiting protrusion and the second limiting protrusion.

[0015] In one embodiment of the utility model, the shell includes a shell and a positioning piece, the shell includes a first cover body and a second cover body that are detachably connected, the first cover body and the second cover body are enclosed to form an installation groove with a notch, a part of the structure of the bracket is slidably accommodated in the installation groove, the periphery of the notch of the installation groove is provided with the third limiting protrusion, and the first limiting protrusion is exposed in the notch of the installation groove; the positioning piece is provided on the side of the second cover body facing the bracket, and a plurality of the positioning grooves are spaced apart on the side of the positioning piece facing the bracket.

[0016] In an embodiment of the utility model, the bracket includes a third cover body and a fourth cover body that are detachably connected, and the third cover body and the fourth cover body enclose the installation cavity;

[0017] The earphone arm retractable mechanism also includes a fixing frame and a fastener, the fixing frame is located between the third cover body and the fourth cover body, the headband frame is passed through the fixing frame, the fixing frame is provided with a limiting protrusion, the headband frame is provided with a limiting groove, the limiting protrusion is clamped and limited in the limiting groove, and the fastener is passed through the third cover body, the fixing frame and the fourth cover body to connect the third cover body, the fixing frame and the fourth cover body.

[0018] The utility model also proposes a headset, which includes the earphone arm telescopic mechanism and two earphone shells in any of the above embodiments, wherein the earphone arm telescopic mechanism includes two telescopic structures, and the two telescopic structures are respectively arranged at two ends of the headband skeleton; each of the earphone shells is connected to one end of the shell away from the bracket.

[0019] In the technical solution of the utility model, when the shell is pulled in a direction away from or close to the bracket, the positioning piece is compressed by the wall of a positioning groove and moves closer to the bracket. When the positioning piece enters the next positioning groove, the positioning piece moves away from the bracket under the action of the elastic restoring force and is accommodated and limited in the next positioning groove, thereby realizing adjustment of the length of the earphone arm. The user can pull the shell to the required length according to actual needs to adapt to different user head sizes, thereby improving wearing comfort and stability; the setting of the telescopic structure can reduce the impact of the wall of the positioning groove on the positioning piece, thereby improving the sliding feel of the left and right sides of the earphone arm and extending the service life of the telescopic mechanism of the earphone arm. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0021] Figure 1 An exploded structural diagram of a first perspective of an embodiment of an earphone arm telescopic mechanism provided by the utility model;

[0022] Figure 2 for Figure 1 A magnified schematic diagram of the local A in the middle;

[0023] Figure 3 An exploded structural diagram of a second viewing angle of an embodiment of an earphone arm telescopic mechanism provided by the utility model;

[0024] Figure 4 A cross-sectional view of an embodiment of the earphone arm telescopic mechanism provided by the utility model;

[0025] Figure 5 for Figure 4 Enlarged schematic diagram of part B in the middle.

[0026] Description of Figure Numbers:

[0027] 1000, earphone arm telescopic mechanism; 1, headband skeleton; 11, limiting groove; 2, telescopic structure; 21, shell; 211, positioning groove; 212, arc transition section; 213, third limiting convex part; 214, shell; 214a, first cover body; 214b, second cover body; 214c, mounting groove; 215, positioning sheet; 22, bracket; 221, mounting cavity; 222, guide through groove; 222a, first limiting step; 223, first limiting convex part; 224, second limiting convex part; 225, third cover body; 226, fourth cover body; 227, second wire groove; 23, positioning member; 231, second limiting step; 232, protrusion; 24, elastic member; 3, fixing frame; 31, limiting convex block; 32, first wire groove; 33, positioning convex rib; 4, headband line.

[0028] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0031] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or solutions that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0032] The utility model provides an earphone arm telescopic mechanism 1000.

[0033] See also Figure 1 and Figure 3 In one embodiment of the utility model, the earphone arm telescopic mechanism 1000 includes a headband frame 1 and a telescopic structure 2, the telescopic structure 2 includes a shell 21, a bracket 22 and a positioning member 23, the bracket 22 is connected to the headband frame 1, the shell 21 is slidably arranged on the bracket 22, the positioning member 23 is elastically connected to the bracket 22, and a plurality of positioning grooves 211 are provided on a side of the shell 21 facing the bracket 22; wherein, the shell 21 can slide relative to the bracket 22 and drive the positioning member 23 to engage with any of the positioning grooves 211.

[0034] In the technical solution of the present utility model, when the shell 21 is pulled in a direction away from or close to the bracket 22, the positioning member 23 is compressed by the groove wall of one positioning groove 211 and moves closer to the bracket 22. When the positioning member 23 enters the next positioning groove 211, the positioning member 23 moves away from the bracket 22 under the action of the elastic restoring force and is accommodated and limited in the next positioning groove 211, thereby realizing adjustment of the length of the earphone arm. The user can pull the shell 21 to the required length according to actual needs to adapt to different user head sizes, thereby improving wearing comfort and stability. The setting of the telescopic structure 2 can reduce the impact of the groove wall of the positioning groove 211 on the positioning member 23, thereby improving the sliding feel of the left and right sides of the earphone arm and extending the service life of the earphone arm telescopic mechanism 1000.

[0035] To improve the uniformity of the force on the headband frame 1, please refer to Figure 4 and Figure 5In one embodiment of the utility model, the bracket 22 is provided with an installation cavity 221, and a partial structure of the headband skeleton 1 is passed through the bracket 22 and accommodated in the installation cavity 221. The positioning member 23 is passed through the bottom wall of the installation cavity 221 and is elastically connected to the headband skeleton 1. A partial structure of the positioning member 23 can be exposed at the cavity opening of the installation cavity 221 and snap-fitted with any of the positioning grooves 211. The positioning member 23 is elastically connected to the headband frame 1. When the shell 21 is pulled in a direction away from or close to the bracket 22, both the elastic restoring force and the elastic compressing force act on the headband frame 1. The headband frame 1 is generally made of steel sheets, which are not easy to deform and have a certain elasticity. This can ensure that when subjected to elastic compression or elastic tension, the headband frame 1 maintains a more stable shape, thereby the force is more evenly applied; and when the shell 21 is pulled in a direction away from or close to the bracket 22, the positioning member 23 is compressed by the groove wall of one of the positioning grooves 211 and enters the installation cavity 221. After the shell 21 is pulled to the required length, the positioning member 23 is exposed at the cavity mouth of the installation cavity 221 under the action of the elastic restoring force and abuts against the next positioning groove 211 to limit the position, which can further reduce the impact of the groove wall of the positioning groove 211 on the positioning member 23, thereby extending its service life.

[0036] To ensure that the positioning member 23 can be accurately positioned during movement, please refer to Figure 4 and Figure 5 In one embodiment of the utility model, a guide slot 222 is provided on the bottom wall of the installation cavity 221, and the positioning member 23 is accommodated in the guide slot 222. When the housing 21 is pulled in a direction away from or close to the bracket 22, the positioning member 23 is compressed by the slot wall of one of the positioning slots 211 and enters the guide slot 222. After the housing 21 is pulled to a desired length, the positioning member 23 is exposed in the notch of the guide slot 222 under the action of the elastic restoring force and abuts against the next positioning slot 211 for limiting. The setting of the guide slot 222 can prevent the positioning member 23 from being misplaced or offset during the movement, and provide an accurate guiding path for the positioning member 23, thereby reducing possible errors in operation and improving the reliability and stability of the operation of the telescopic structure 2.

[0037] For further information, see Figure 4 and Figure 5In one embodiment of the utility model, the fixing assembly includes an elastic member 24, the inner peripheral wall of the guide groove 222 is formed with a first limiting step 222a, the outer peripheral wall of the positioning member 23 is formed with a second limiting step 231, the first limiting step 222a can be abutted against the second limiting step 231 for limiting, the elastic member 24 is sleeved on the positioning member 23, and is located between the second limiting step 231 and the headband frame 1. When the shell 21 is pulled in a direction away from or close to the bracket 22, the positioning member 23 is compressed by the groove wall of the positioning groove 211 and enters the guide groove 222. At this time, the elastic member 24 is in a compressed state, and the first limiting step 222a and the second limiting step 231 are separated. After pulling the shell 21 to the required length, the positioning member 23 is exposed in the notch of the guide groove 222 and abuts against the next positioning groove 211 under the action of the elastic restoring force of the elastic member 24. At this time, the first limiting step 222a and the second limiting step 231 abut against each other for limiting. The provision of the first limiting step 222a and the second limiting step 231 can better limit the moving stroke of the positioning member 23, so as to further improve the reliability and stability of the operation of the telescopic structure 2.

[0038] To reduce the wear on the positioning member 23, please refer to Figure 5 In one embodiment of the utility model, a plurality of protrusions 232 are provided at intervals on the side of the second limiting step 231 facing the first limiting step 222a. The arrangement of the protrusions 232 can reduce the contact area between the second limiting step 231 and the first limiting step 222a, thereby reducing wear and friction and extending the service life of the positioning member 23.

[0039] To improve the sliding feel of the left and right sides of the earphone arm, refer to Figure 4 and Figure 5 In one embodiment of the utility model, an arc transition section 212 is provided between any two adjacent positioning grooves 211. The arc transition section 212 is provided to reduce the friction between the positioning member 23 and each positioning groove 211 during the cooperation process, thereby reducing the resistance of the housing 21 moving closer to or away from the bracket 22, and can extend the service life of the positioning member 23.

[0040] To prevent the housing 21 from being separated from the bracket 22 during movement, please refer to Figure 3 and Figure 4In one embodiment of the utility model, the first limiting protrusion 223 and the second limiting protrusion 224 are formed at both ends of the bracket 22, and the third limiting protrusion 213 is formed at one end of the housing 21 close to the bracket 22, and the third limiting protrusion 213 can be respectively abutted with the first limiting protrusion 223 and the second limiting protrusion 224 for limiting. The housing 21 moves away from the bracket 22, and when the third limiting protrusion 213 and the second limiting protrusion 224 abut for limiting, the earphone arm has been stretched to the longest stretching distance; the housing 21 moves close to the bracket 22, and when the third limiting protrusion 213 and the first limiting protrusion 223 abut for limiting, the earphone arm has been shortened to the shortest shortening distance. The first limiting protrusion 223, the second limiting protrusion 224 and the third limiting protrusion 213 are provided to prevent the housing 21 from being separated from the bracket 22 during the stretching process, thereby ensuring that the earphone arm can be stretched normally.

[0041] More specifically, see Figure 1 and Figure 3 In one embodiment of the utility model, the shell 21 includes a shell 214 and a positioning piece 215, the shell 214 includes a first cover body 214a and a second cover body 214b that are detachably connected, the first cover body 214a and the second cover body 214b are enclosed to form a mounting groove 214c with a notch, and part of the structure of the bracket 22 is slidably accommodated in the mounting groove 214c, and the periphery of the notch of the mounting groove 214c is provided with the third limiting protrusion 213, and the first limiting protrusion 223 is exposed in the notch of the mounting groove 214c; the positioning piece 215 is provided on the side of the second cover body 214b facing the bracket 22, and the side of the positioning piece 215 facing the bracket 22 is provided with multiple positioning grooves 211 at intervals. When the shell 21 moves away from the bracket 22 to the longest stretching distance, the third limiting protrusion 213 abuts against the first limiting protrusion 223 to limit the position, and the shell 21 can no longer be stretched; when the shell 21 moves close to the bracket 22 to the shortest shortening distance, the third limiting protrusion 213 abuts against the second limiting protrusion 224 to limit the position, and the shell 21 can no longer be shortened; the first cover body 214a and the second cover body 214b are detachably connected, which can be achieved by fastening screws or fastening nuts and fastening bolts, and the utility model does not impose any restrictions on this; the detachable connection can facilitate the installation of the earphone arm retractable mechanism 1000 and the subsequent maintenance and replacement of some of its structures, thereby improving the convenience of assembly and extending its service life.

[0042] See also Figure 1 and Figure 3In one embodiment of the utility model, the bracket 22 includes a third cover body 225 and a fourth cover body 226 that are detachably connected, and the third cover body 225 and the fourth cover body 226 enclose the installation cavity 221; the earphone arm retractable mechanism 1000 also includes a fixing frame 3 and a fastener, the fixing frame 3 is located between the third cover body 225 and the fourth cover body 226, the headband skeleton 1 is passed through the fixing frame 3, the fixing frame 3 is provided with a limiting protrusion 31, the headband skeleton 1 is provided with a limiting groove 11, the limiting protrusion 31 is clamped and limited in the limiting groove 11, and the fastener is passed through the third cover body 225, the fixing frame 3 and the fourth cover body 226 to connect the third cover body 225, the fixing frame 3 and the fourth cover body 226. When assembling the bracket 22, the headband skeleton 1 and the fixing frame 3, the headband skeleton 1 is inserted into the fixing frame 3 so that the limiting protrusion 31 between the fixings is engaged and limited in the limiting groove 11 of the headband skeleton 1 to realize the pre-fixation of the headband skeleton 1, and it is installed between the third cover body 225 and the fourth cover body 226, and then the fastener is inserted into the third cover body 225, the fixing frame 3 and the fourth cover body 226 to realize the connection between the bracket 22, the headband skeleton 1 and the fixings; the third cover body 225 and the fourth cover body 226 are detachably connected, which can be achieved by fastening screws or fastening nuts and fastening bolts, and the utility model does not limit this; the detachable connection can facilitate the installation of the earphone arm telescopic mechanism 1000 and the subsequent maintenance and replacement of its partial structure, thereby improving the convenience of assembly and extending its service life.

[0043] See also Figure 1 , Figure 2 as well as Figure 3 In one embodiment, the earphone arm retractable mechanism 1000 further includes a headband cable 4, which is passed through the fixing frame 3, the bracket 22 and the housing 21. The fixing frame 3 is provided with a first cable groove 32, and the two opposite side walls of the first cable groove 32 are provided with positioning ribs 33, and the top wall of the mounting cavity 221 is provided with a second cable groove 227. The headband cable 4 is fixed in the first cable groove 32 and the second cable groove 227. The positioning ribs 33 can provide additional positioning points for the headband cable 4 in the first cable groove 32, thereby increasing the accuracy of positioning and ensuring the correct position of the headband cable 4 during the assembly process. The positioning ribs 33 can also prevent the headband cable 4 from shifting during the assembly process, ensuring the stability of the position and posture of the headband cable 4.

[0044] The utility model also proposes a headset, which includes two earphone shells and an earphone arm telescopic mechanism 1000. The specific structure of the earphone arm telescopic mechanism 1000 refers to the above-mentioned embodiment. Since the present headset adopts all the technical solutions of all the above-mentioned embodiments, it at least has all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be described one by one here. Among them, the earphone arm telescopic mechanism 1000 includes two telescopic structures 2, and the two telescopic structures 2 are respectively arranged at the two ends of the headband skeleton 1; each earphone shell is connected to an end of the outer shell 21 away from the bracket 22; the headset can adapt to different user head sizes and shapes, and the user can extend or retract the earphone arm according to his or her needs so that the earphone can better fit the head and provide a more comfortable wearing experience.

[0045] The above description is only an exemplary embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the technical concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. An earphone arm telescopic mechanism, characterized in that: include: Headband skeleton; and A telescopic structure, the telescopic structure comprising a shell, a bracket and a positioning member, the bracket being connected to the headband frame, the shell being slidably disposed on the bracket, the positioning member being elastically connected to the bracket, and a plurality of positioning grooves being disposed on a side of the shell facing the bracket; Wherein, the housing can slide relative to the bracket and drive the positioning member to engage with any of the positioning grooves.

2. The earphone arm telescopic mechanism according to claim 1, characterized in that: The bracket is provided with an installation cavity, a partial structure of the headband frame is passed through the bracket and accommodated in the installation cavity, the positioning member is passed through the bottom wall of the installation cavity and is elastically connected to the headband frame, and a partial structure of the positioning member can be exposed at the cavity opening of the installation cavity and be engaged with any of the positioning grooves.

3. The earphone arm telescopic mechanism according to claim 2, characterized in that: The bottom wall of the installation cavity is provided with a guide through groove, and the positioning member is accommodated in the guide through groove.

4. The earphone arm telescopic mechanism according to claim 3, characterized in that: The telescopic structure includes an elastic member, the inner peripheral wall of the guide groove is formed with a first limiting step, the outer peripheral wall of the positioning member is formed with a second limiting step, the first limiting step can abut against the second limiting step for limiting, the elastic member is sleeved on the positioning member, and is located between the second limiting step and the headband frame.

5. The earphone arm telescopic mechanism according to claim 4, characterized in that: A plurality of protrusions are arranged at intervals on a side of the second limiting step facing the first limiting step.

6. The earphone arm retractable mechanism according to claim 1, characterized in that: An arc transition section is provided between any two adjacent positioning grooves.

7. The earphone arm retractable mechanism according to any one of claims 1 to 6, characterized in that: A first limiting protrusion and a second limiting protrusion are formed at both ends of the bracket, and a third limiting protrusion is formed at one end of the housing close to the bracket. The third limiting protrusion can be respectively abutted with the first limiting protrusion and the second limiting protrusion for limiting position.

8. The earphone arm retractable mechanism according to claim 7, characterized in that: The shell includes a shell and a positioning piece, the shell includes a first cover body and a second cover body that are detachably connected, the first cover body and the second cover body are enclosed to form a mounting groove with a notch, a part of the structure of the bracket is slidably accommodated in the mounting groove, the periphery of the notch of the mounting groove is provided with the third limiting protrusion, the first limiting protrusion is exposed in the notch of the mounting groove; the positioning piece is provided on a side of the second cover body facing the bracket, and a plurality of the positioning grooves are spaced apart on the side of the positioning piece facing the bracket.

9. The earphone arm retractable mechanism according to any one of claims 2 to 5, characterized in that: The bracket comprises a third cover body and a fourth cover body which are detachably connected, and the third cover body and the fourth cover body enclose the installation cavity; The earphone arm retractable mechanism also includes a fixing frame and a fastener, the fixing frame is located between the third cover body and the fourth cover body, the headband frame is passed through the fixing frame, the fixing frame is provided with a limiting protrusion, the headband frame is provided with a limiting groove, the limiting protrusion is clamped and limited in the limiting groove, and the fastener is passed through the third cover body, the fixing frame and the fourth cover body to connect the third cover body, the fixing frame and the fourth cover body.

10. A headset, characterized in that: include: The earphone arm telescopic mechanism according to any one of claims 1 to 9, wherein the earphone arm telescopic mechanism comprises two telescopic structures, and the two telescopic structures are respectively arranged at two ends of the headband skeleton; and Two earphone shells, each earphone shell is connected to an end of the housing away from the bracket.

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