Earphone headband sliding test device

Abstract

The invention relates to the technical field of earphone testing devices, and particularly discloses an earphone headband sliding testing device which comprises a shell and a testing mechanism, the testing mechanism comprises a driving assembly, a transmission assembly, a supporting plate and a testing assembly, and the driving assembly comprises a rotating shaft and a rotating driving part which are arranged at the bottom of a containing cavity at intervals; single-face gear discs are arranged on the surface of the rotating shaft at intervals, gear faces of the single-face gear discs are oppositely arranged, an output shaft of the rotating driving part is provided with a tooth-missing gear between the two single-face gear discs, the supporting plate is arranged in the containing cavity, and an arc-shaped through hole and a guide groove are formed in the supporting plate; the testing assembly comprises a first arc-shaped block, a second arc-shaped block and a third arc-shaped block which are connected in sequence, the second arc-shaped block is provided with a connecting rod in transmission connection with the limiting ring, and the first arc-shaped block and the third arc-shaped block are provided with protrusions extending into the guide grooves and clamping pieces used for clamping one ends of earmuffs of the headphone; according to the device, the telescopic test of the headphone is more efficient, and the accuracy of a test result is improved.

Description

Technical Field

[0001] The present application relates to the technical field of headphone testing devices, and in particular to a headphone headband sliding testing device. Background Art

[0002] As a widely used audio device, headphones are mainly divided into two parts: an external frame and an internal acoustic component. The external frame includes a headband and earmuffs that are retractably connected to both ends of the headband. In order to test the structural performance of headphones, the testing equipment in related technologies completes the structural performance test by fixing the headband and stretching one side of the earmuff back and forth. However, this unilateral testing method is inefficient. At the same time, since everyone's head shape is different, when adjusting the extension of the earmuff, the two earmuffs are often expanded in opposite directions. This action actually has a great impact on the structural performance test of the headband and earmuffs. The current testing devices have not yet taken this actual usage scenario into consideration. Summary of the Invention

[0003] The present application aims to propose an earphone headband sliding test device to at least solve the problems in the prior art of low testing efficiency of the earphone headband sliding test device and the single actual usage scenario considered during the test process, which leads to low accuracy in testing the structural performance of the earphone.

[0004] To achieve the above objectives, an embodiment of the present application provides an earphone headband sliding test device, comprising a housing having a cavity and a testing mechanism disposed in the cavity, the testing mechanism comprising: A drive assembly includes a rotating shaft and a rotating drive member spaced apart at the bottom of the cavity, wherein the rotating shaft is coaxially spaced apart with single-sided gear plates, the gear surfaces of the two single-sided gear plates being disposed opposite each other, and an output shaft of the rotating drive member is provided with a toothless gear, the toothless gear being interposed between the two single-sided gear plates and intermittently meshing with the single-sided gear plates; A transmission assembly including a first end having a limiting ring, wherein the first end is connected to the rotating shaft; A support plate is disposed in the cavity, wherein the support plate is provided with an arc-shaped through hole along the thickness direction, a guide groove is provided on the surface facing away from the transmission assembly, and a fixing seat is spaced apart from the guide groove; The test assembly includes a first arc block, a second arc block and a third arc block which are movably connected end to end in sequence. The surface of the second arc block is provided with a connecting rod which passes through the arc through hole and is transmission-connected to the limit ring. The first arc block and the third arc block are provided with a protrusion extending into the guide groove and a clamping piece for clamping one end of the earmuff of the headphone.

[0005] In some embodiments, the driving assembly, the transmission assembly, the support plate, and the testing assembly are sequentially arranged along the height direction of the cavity, and one end of the rotating shaft is rotatably connected to the bottom surface of the cavity.

[0006] In some embodiments, during one rotation of the toothless gear, the stroke of the single-sided gear plate engaged therewith is less than or equal to the arc length of the two opposite ends of the arc-shaped through hole on the circle to which they belong.

[0007] In some embodiments, the guide groove is between the side edge of the support plate and the circle to which the arc-shaped through hole belongs, and the guide groove is provided with a bending portion, which is configured to guide the protrusion to slide toward a direction away from the circle to which the arc-shaped through hole belongs.

[0008] In some embodiments, a telescopic drive member is provided on the bottom surface of the first end, an output shaft of the telescopic drive member is connected to a limit frame, and the telescopic drive member is configured to change an overlapping area of a vertical projection profile of the limit frame and the arc-shaped through hole.

[0009] In some embodiments, a fixing seat is provided on the surface of the support plate, and the fixing seat includes a fixing block having an arc-shaped groove and a clamping block provided in the arc-shaped groove. The arc-shaped groove is adapted to the shape of the headband, and the clamping block is used to fasten the headband.

[0010] In some embodiments, the transmission assembly further includes a second end disposed opposite the first end, the second end being transmission-connected to a cooling assembly, and the cooling assembly being configured to continuously cool the telescopic connection between the headband and the earmuff of the headphones.

[0011] In some embodiments, a limiting groove is provided on the second end surface along the length direction, and the cooling component includes a guide rail arranged on the support plate, a slider slidably connected to the rail, a transmission rod arranged on the opposite surface of the slider, and a piston structure arranged on the end of the transmission rod away from the slider.

[0012] In some embodiments, the piston structure includes a sleeve connected to the support plate, a heat dissipation plate connected to one end of the sleeve, and a piston connected to the end of the transmission rod away from the slider, wherein the piston is slidably connected to the sleeve.

[0013] In some embodiments, the heat dissipation plate is arc-shaped, and a plurality of air holes communicating with the inner cavity of the sleeve are opened on the surface of the heat dissipation plate, and the air holes face the telescopic connection between the headband and the earmuff during the headphone testing.

[0014] Compared with the prior art, the technical solutions provided by the above embodiments of the present application include at least the following beneficial effects or advantages: 1) The device of the present application is provided with a test mechanism, which includes a drive assembly, a transmission assembly, a support plate and a test assembly. The support plate is provided with an arcuate through hole and a guide groove and a fixed seat are provided on the surface away from the transmission assembly. The guide groove is between the side edge of the support plate and the circle to which the arcuate through hole belongs. The test assembly includes a first arcuate block, a second arcuate block and a third arcuate block that are movably connected end to end in sequence. The surface of the second arcuate block is provided with a projection extending into the guide groove and a clamping member for clamping one end of the earmuff of the headphone. At the same time, the drive assembly is cooperated with by arranging opposite single-sided gear plates at intervals on the rotating shaft, and meshing with the two single-sided gear plates. The toothless gear is combined. During the test, when the driving motor is running, the setting of the two single-sided gear plates and the toothless gear realizes the forward and reverse rotation of the rotating shaft, thereby driving the first arc block and the third arc block to slide back and forth, and the clamping members of the first arc block and the third arc block respectively clamp one end of the earmuff of the headphone, thereby realizing synchronous testing of the earmuffs at both ends of the headband, thereby improving the test efficiency. At the same time, the first arc block and the third arc block are guided by the guide groove, and when the first arc block and the third arc block slide back and forth, they synchronously perform centrifugal motion, thereby realizing the outward expansion of the two earmuffs in the diverging direction during the extension and retraction process of the headband and the earmuffs, thereby better simulating the actual situation of the headphones in normal use, and improving the accuracy of the structural performance test of the sliding connection between the headband and the earmuffs.

[0015] 2) A cooling component is provided, which is connected to the driving component through a transmission component. The cooling component includes a guide rail provided on the support plate, a slider slidably connected to the rail, a transmission rod provided on the opposite surface of the slider, and a piston structure provided at the end of the transmission rod away from the slider. The piston structure includes a sleeve connected to the support plate, a heat sink connected to one end of the sleeve, and a piston connected to the end of the transmission rod away from the slider. The piston is slidably connected to the sleeve, the heat sink is arc-shaped, and a plurality of air holes connected to the inner cavity of the sleeve are provided on the surface of the heat sink. When the headband and earmuff extension test is performed, the heat sink cools the extension connection of the headband and earmuff, thereby avoiding local high temperature at the extension connection caused by continuous extension and retraction during the test of the headband and earmuff, affecting the structural strength, and further affecting the accuracy of the structural performance test of the sliding connection of the headband and earmuff.

[0016] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become obvious from the description below, or will be learned through practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 is a schematic structural diagram of a testing device according to an embodiment of the present application; Figure 2 is a front view of a testing device according to an embodiment of the present application; Figure 3 is based on Figure 2 Cross-sectional view along the AA direction; Figure 4 is a schematic structural diagram of a testing device according to an embodiment of the present application with the housing removed; Figure 5 is a schematic structural diagram of a drive assembly and a transmission assembly according to an embodiment of the present application; Figure 6 is a structural schematic diagram of a support plate according to an embodiment of the present application; Figure 7 is a top view of a support plate according to an embodiment of the present application; Figure 8 is a schematic structural diagram of a test assembly according to an embodiment of the present application; Figure 9 is another structural schematic diagram of the testing device according to an embodiment of the present application with the housing removed; Figure 10 It is a structural schematic diagram of a cooling component according to an embodiment of the present application.

[0019] Reference numerals: 10. Test device; 100, housing; 110, cavity; 111, limiting portion; 200. Testing agency; 210, drive assembly; 211, rotating shaft; 2111, single-sided gear plate; 212, rotating drive member; 2121, toothless gear; 220, transmission assembly; 221, first end; 2211, limiting ring; 222, second end; 2221, limiting groove; 223, telescopic drive member; 224, limiting frame; 230, support plate; 231, arc-shaped through hole; 232, guide groove; 232, bending portion; 233, fixing seat; 2331, fixing block; 23311, arc-shaped groove; 2332, clamping block; 2333, adjusting bolt; 234, bracket; 240, test assembly; 241, first arc-shaped block; 2411, connecting rod; 242, second arc-shaped block; 2422, clamping member; 2421, protrusion; 243, third arc-shaped block; 250, cooling assembly; 251, guide rail; 2511, slideway; 252, slider; 253, transmission rod; 254, piston structure; 2541, sleeve; 2542, piston; 2543, heat sink; 25431, air hole; 300. Wear headphones. DETAILED DESCRIPTION

[0020] The embodiments of the present application are described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0021] It should be noted that when an element is referred to as being “fixed to” another element, it may be directly on the other element or there may be an intermediate element. When an element is referred to as being “connected to” another element, it may be directly connected to the other element or there may be an intermediate element.

[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application pertains. The terms used herein in the specification of this application are for the purpose of describing specific embodiments only and are not intended to limit this application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0023] See also Figures 1 to 4 The present embodiment provides an earphone headband sliding test device 10, which includes a shell 100 having a cavity 110 and a test mechanism 200 disposed in the cavity 110. The shell 100 may be in the shape of a rectangular box, and an opening communicating with the cavity 110 is provided on the top. The size of the opening should be sufficient to allow headphones to be placed on the test mechanism 200. Of course, the shell 100 may also be in other shapes, such as a cylindrical shape or one that surrounds part of the test mechanism 200. The specific shape is selected according to actual needs. The setting of the shell 100, on the one hand, protects the test mechanism 200, and on the other hand, makes the test device 10 more integrated and more integrated, and facilitates the transfer and placement of the test device 10.

[0024] In some embodiments, combined Figure 3 and Figure 4The testing mechanism 200 includes a driving assembly 210, a transmission assembly 220, a support plate 230, a testing assembly 240 and a cooling assembly 250. A limiting portion 111 is set in the central area of the bottom of the cavity 110. The limiting portion 111 can be an annular groove. One end of the driving assembly 210 is rotatably connected to the limiting portion 111. The driving assembly 210, the transmission assembly 220, the support plate 230 and the testing assembly 240 are arranged in sequence along the height direction of the cavity 110. The space area above the testing assembly 240 is used to place the headphones 300 for telescopic sliding testing. The support plate 230 is fixedly connected to the inner wall of the cavity 110. Through the setting of the support plate 230, it can play a supporting role in the installation of the transmission assembly 220, the testing assembly 240 and the cooling assembly 250.

[0025] See also Figure 5 The driving assembly 210 includes a rotating shaft 211 and a rotating driving member 212 which are spaced apart at the bottom of the cavity 110. The rotating shaft 211 is coaxially spaced apart with single-sided gear plates 2111. The gear surfaces of the single-sided gear plates 2111 are arranged opposite to each other. The output shaft of the rotating driving member 212 is provided with a toothless gear 2121. The toothless gear 2121 is located between the two single-sided gear plates 2111 and is intermittently meshed with the single-sided gear plates 2111. The top of the rotating shaft 211 is connected to the rotating assembly 220. During the rotation of the rotating shaft 211, the rotating assembly 220 is driven to rotate, thereby further controlling the operation of the test assembly 240.

[0026] In some embodiments, one end of the rotating shaft 211 is rotatably connected to the limiting portion 111 in the cavity 11. The rotating driving member 212 can be a servo motor, a stepping motor or other motors, and the selection can be made based on actual needs. The rotating driving member 212 can be fixed by a support block, and the rotating driving member 212 can be supported so that its output shaft is located between the two single-sided gear plates 2111.

[0027] Optionally, the single-sided gear disk 2111 can also be a double-sided gear disk. The number of teeth of the toothless gear 2121 can be determined based on the maximum stretching distance that the test component 240 needs to drive the headband and earmuff of the headphones. At the same time, it is also necessary to meet the requirement that during the engagement process of the toothless gear 2121 with the single-sided gear disk 2111 on one side, the toothless gear 2121 and the single-sided gear disk 2111 on the opposite side should be in a non-engaged state.

[0028] With this arrangement, when the motor rotates continuously, the toothless gear 2121 intermittently engages with the two single-sided gear plates 2111. Specifically, when the toothless gear 2121 engages with the upper single-sided gear plate 2111, the rotating shaft 211 rotates in one direction. When the toothless gear 2121 engages with the lower single-sided gear plate 2111, the rotating shaft 211 rotates in the other direction. In this way, continuous stretching and retraction testing of the headband and earmuffs of the headphones is achieved.

[0029] In some embodiments, continued binding Figure 5 The transmission component 220 includes a first end 221 having a limiting ring 2211 and a second end 222 having a limiting groove 2221. The first end 221 and the second end 222 can be the two end parts of a rod-shaped structure. Specifically, the transmission component 220 on both sides of the rotating shaft 211 is divided by a limiting ring 2211. The limiting ring 2211 is arranged on the end face of the first end 221, and the limiting groove 2221 is opened on the surface along the length direction of the second end 222.

[0030] Optionally, the limit groove 2221 can be a blind groove or a through groove, and a telescopic drive member 223 is provided on the bottom surface of the first end 221. The output shaft of the telescopic drive member 223 is connected to the limit frame 224. The telescopic drive member 223 is constructed to change the overlapping area of the vertical projection contour of the limit frame 224 and the arc-shaped through hole 231. The telescopic drive member 223 can be a micro telescopic motor, and the limit frame 224 can be an equilateral or isosceles triangle frame. By changing the overlapping area of the vertical projection contour of the limit frame 224 and the arc-shaped through hole 231, the stretching amplitude of the test component 244 can be controlled.

[0031] See also Figure 6 and Figure 7 The support plate 230 is arranged in the cavity 110, and the support plate 230 is provided with an arc-shaped through hole 231 along the thickness direction, and a guide groove 232 and a fixing seat 233 spaced apart from the guide groove 232 are provided on the surface away from the transmission assembly 220. The guide groove 232 is between the side edge of the support plate 230 and the circle to which the arc-shaped through hole 231 belongs, and the guide groove 232 is provided with a bending portion 2321, which is configured to guide the protrusion to slide toward the direction of the circle away from the arc-shaped through hole 231.

[0032] It should be noted that the arc-shaped through hole 231 is projected into an arc segment along the vertical direction. For the circle to which it belongs, that is, the circle where the arc segment of the arc-shaped through hole 231 is located, Figure 7For example, the dotted circle in the figure is the circle corresponding to the arc-shaped through hole 231. The angle a corresponding to the arc-shaped through hole 231 in the circle can be designed according to the telescopic test amplitude or length of the headphone. During the rotation of the toothless gear 2121, the stroke of the single-sided gear plate 2111 engaged with it is less than or equal to the arc length corresponding to the two opposite ends of the arc-shaped through hole 231 in the circle.

[0033] Optionally, the guide groove 232 can be a blind groove or a through groove, two guide grooves 232 are arranged at intervals, and the two guide grooves 232 can be mirror-distributed on both sides of the arc-shaped through hole 231, and the bending portion 2321 set in the guide groove 232 needs to extend toward the edge of the support plate 230.

[0034] In some embodiments, in order to better test the headphones, a fixing seat 233 is set on the edge of the support plate 230 opposite to the arc-shaped through hole 231. The fixing seat 233 includes a fixing block 1331 having an arc-shaped groove 23311 and a clamping block 2332 arranged in the arc-shaped groove 23311. The arc-shaped groove 23311 is adapted to the shape of the headband, and the clamping block 2332 is used to fasten the headband.

[0035] Optionally, the clamping block 2332 can be an arc-shaped block, and the curvature of the clamping block 2332 and the arc-shaped groove 23311 should be adapted to the curvature of the headband. An adjusting bolt 2333 and a limiting rod can be provided at the end of the clamping block 2332 that is away from the arc-shaped surface of the arc-shaped groove 23311. By rotating the adjusting bolt 2333, the relative distance between the clamping block 2332 and the arc-shaped surface of the arc-shaped groove 23311 can be adjusted, thereby facilitating the fixation of the headphones.

[0036] See also Figure 4 、 Figure 8 and Figure 9 The test assembly 240 includes a first arc block 241, a second arc block 242 and a third arc block 243 which are movably connected end to end in sequence. A connecting rod 2411 is provided on the surface of the second arc block 242, which passes through the arc through hole 231 and is transmission-connected to the limit ring 2211. The first arc block 241 and the third arc block 243 are provided with a protrusion extending into the guide groove 232 and a clamping piece 2422 for clamping one end of the earmuff of the headphone.

[0037] In some embodiments, the curvature of the first arc block 241, the second arc block 242 and the third arc block 243 can be the same, the first arc block 241 and the third arc block 243 are mirror-set, the arc-shaped through hole 231 limits and guides the sliding direction of the first arc block 241, the second arc block 242 and the third arc block 243, and the connecting rod 2411 passes through the limit ring 2211 and the limit frame 224 in sequence and extends to the bottom of the limit frame 224. When the telescopic range of the headphones needs to be adjusted, the overlapping area of the vertical projection contour of the limit frame 224 and the arc-shaped through hole 231 can be changed by the telescopic drive member 223, thereby changing the maximum sliding range of the connecting rod 2411 in the limit ring 2211, thereby achieving adjustment.

[0038] Optionally, the clamping member 2422 can be a fixed elastic sheet arranged in two structures. By clamping the headphone 300 close to the earmuff part between the two fixed elastic sheets, the clamping member 2422 can drive the earmuff part to expand and contract relative to the headband during the test.

[0039] Optionally, the first arc block 241 and the third arc block 243 are provided with protrusions extending into the guide groove 232. The first arc block 241 and the third arc block 243 are guided by the guide groove 232. When the first arc block 241 and the third arc block 243 slide back and forth, they synchronously perform centrifugal motion, thereby achieving the outward expansion of the two earmuffs in opposite directions during the extension and retraction process of the headband and the earmuffs, better simulating the actual situation of the headphones 300 in normal use, and improving the accuracy of the structural performance test of the sliding connection between the headband and the earmuffs.

[0040] See also Figure 9 and Figure 10 The cooling component 250 includes a guide rail 251 arranged on the support plate 230, a slider 252 slidably connected to the rail 251, a transmission rod 253 arranged on the opposite surface of the slider 252, and a piston structure 254 arranged at the end of the transmission rod 253 away from the slider 252. The piston structure 254 includes a sleeve 2541 connected to the support plate 230, a heat dissipation plate 2543 connected to one end of the sleeve 2541, and a piston 2542 connected to the end of the transmission rod 253 away from the slider 252, wherein the piston 2542 is slidably connected to the sleeve 2541.

[0041] In some embodiments, the guide rail 251 is arranged at the opposite end of the arc-shaped through hole 231, that is, the rotating shaft 211 is between the guide rail 251 and the arc-shaped through hole 231, and the guide rail 251 is arranged on the bottom surface of the support plate 230. The guide rail 251 is provided with a slide groove 2511 for sliding connection of the slider 252. The lower surface of the slider 252 can be provided with a short rod or a protrusion extending into the limiting groove 2221. When the second end 222 is rotating, it drives the slider 252 to slide back and forth along the slide groove 2511.

[0042] Optional, combined Figure 6 and Figure 10 , brackets 234 are set at the two opposite ends of the support plate 230. The brackets 234 are located at the retracted position of the headband, that is, the connection between the headband and the earmuff of the headphone 300. The brackets 234 are fixedly connected to the sleeve 2541 to support the sleeve 2541 to the corresponding height position, thereby achieving a cooling effect on the connection between the headband and the earmuff.

[0043] Optionally, the heat dissipation plate 2543 is arc-shaped, and a plurality of air holes 25431 connected to the inner cavity of the sleeve 2541 are provided on the surface of the heat dissipation plate 2543. The air holes 25431 face the telescopic connection between the headband and the earmuff during the headphone testing. The shape of the air holes 25431 can be a long strip. At the same time, the air holes 25431 are dispersed on the surface of the heat dissipation plate 2543. During the testing of the headphone 300, the transmission rod drives the piston 2542 to perform piston movement in the sleeve 2541. When the piston 2542 slides toward the side of the headphone 300, a natural wind can be formed to blow toward the telescopic connection between the headband and the earmuff. When the piston 2542 slides away from the side of the headphone 300, the natural wind around the telescopic connection between the headband and the earmuff is extracted, thereby achieving a better cooling effect.

[0044] It should be understood that the test device 10 of the above embodiment is provided with a test mechanism 200, which includes a drive assembly 210, a transmission assembly 220, a support plate 230 and a test assembly 240. The support plate 230 is provided with an arcuate through hole 231 and a guide groove 232 and a fixing seat 233 on the surface 220 away from the transmission assembly. The guide groove 232 is between the side edge of the support plate 230 and the circle to which the arcuate through hole 231 belongs. The test assembly 240 includes a first arc block 241, a second arc block 242 and a third arc block 243 that are movably connected end to end in sequence. The surface of the second arc block 242 is provided with a through-hole 231 that is transmission-connected to the transmission assembly 220. The first arc block 241 and the third arc block 243 are connected in sequence. 43 is provided with a protrusion extending into the guide groove 232 and a clamping piece 2422 for clamping one end of the headphone earmuff. At the same time, in conjunction with the driving assembly 210, opposite single-sided gear plates 2111 are arranged on the rotating shaft 211 at intervals, and a toothless gear 2121 meshed with the two single-sided gear plates 2111. During the test, when the driving motor is running, the arrangement of the two single-sided gear plates 2111 and the toothless gear 2121 realizes the forward and reverse rotation of the rotating shaft 211, thereby driving the first arc block 241 and the third arc block 243 to slide back and forth, and the clamping pieces 2422 of the first arc block 241 and the third arc block 243 respectively clamp one end of the headphone earmuff, thereby realizing synchronous testing of the earmuffs at both ends of the headband, thereby improving the test efficiency. At the same time, the first arc block 241 and the third arc block 243 are guided by the guide groove 232. When the first arc block 241 and the third arc block 243 slide back and forth, they simultaneously perform centrifugal motion, thereby achieving the outward expansion of the two earmuffs in opposite directions during the extension and retraction process of the headband and the earmuffs, thereby improving the accuracy of the structural performance test of the sliding connection between the headband and the earmuffs.

[0045] Furthermore, a cooling component 250 is provided, which is connected to the driving component 210 through the transmission component 220. The cooling component 250 includes a guide rail 251 provided on the support plate 230, a slider 252 slidably connected to the rail 251, a transmission rod 253 provided on the opposite surface of the slider 252, and a piston structure 254 provided at one end of the transmission rod 253 away from the slider 252. The piston structure 254 includes a sleeve 2541 connected to the support plate 230, a heat dissipation plate 2543 connected to one end of the sleeve 2541, and a piston structure 254 provided at one end of the transmission rod 253 away from the slider 252. 253 is away from the piston 2542 connected to one end of the slider 252, wherein the piston 2542 is slidably connected to the sleeve 2541, the heat sink 2543 is arc-shaped, and a plurality of air holes 25431 are opened on the surface of the heat sink 2543 and communicated with the inner cavity of the sleeve 2541. When the headband and earmuff extension test is performed, the heat sink 2543 is used to cool the extension connection between the headband and earmuff, thereby avoiding local high temperature at the extension connection caused by continuous extension and contraction of the headband and earmuff during the test, affecting the structural strength, and further affecting the accuracy of the structural performance test of the sliding connection between the headband and earmuff.

[0046] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation to the invention.

[0047] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "example," "specific example," or "some examples" means that a specific feature, structure, material, or characteristic described in conjunction with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.

[0048] Obviously, the described embodiments are only some of the embodiments of the present application, rather than all of the embodiments. Mentioning "embodiment" in this article means that the specific features, structures or characteristics described in conjunction with the embodiment may be included in at least one embodiment of the present embodiment application. The appearance of this phrase in various positions in the specification does not necessarily mean that they are all the same embodiments, nor are they independent or alternative embodiments that are mutually exclusive with other embodiments. It can be understood explicitly and implicitly by those skilled in the art that the embodiments described herein can be combined with other embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without making creative work are within the scope of protection of this application.

[0049] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and intent of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. A headphone headband sliding test device, comprising a housing having a cavity and a testing mechanism disposed in the cavity, characterized in that: The testing organization includes: A drive assembly includes a rotating shaft and a rotating drive member spaced apart at the bottom of the cavity, wherein the rotating shaft is coaxially spaced apart with single-sided gear plates, the gear surfaces of two single-sided gear plates being arranged opposite to each other, and an output shaft of the rotating drive member is provided with a toothless gear, wherein the toothless gear is interposed between the two single-sided gear plates and intermittently meshed with the single-sided gear plates; A transmission assembly including a first end having a limiting ring, wherein the first end is connected to the rotating shaft; A support plate is disposed in the cavity, wherein the support plate is provided with an arc-shaped through hole along the thickness direction and a guide groove is provided on the surface facing away from the transmission assembly; The test assembly includes a first arc block, a second arc block and a third arc block which are movably connected end to end in sequence. The surface of the second arc block is provided with a connecting rod which passes through the arc through hole and is transmission-connected to the limit ring. The first arc block and the third arc block are provided with a protrusion extending into the guide groove and a clamping piece for clamping one end of the earmuff of the headphone.

2. The headphone headband sliding test device according to claim 1, characterized in that: The driving assembly, the transmission assembly, the support plate and the testing assembly are sequentially arranged along the height direction of the cavity, and one end of the rotating shaft is rotatably connected to the bottom surface of the cavity.

3. The headphone headband sliding test device according to claim 1 or 2, characterized in that: During one rotation of the toothless gear, the stroke of the single-sided gear plate meshing with it is driven to rotate is less than or equal to the arc lengths of the two opposite ends of the arc-shaped through hole on the circles to which they belong.

4. The headphone headband sliding test device according to claim 3, characterized in that: The guide groove is between the side edge of the support plate and the circle to which the arc-shaped through hole belongs, and the guide groove is provided with a bending portion, which is configured to guide the protrusion to slide toward a direction away from the circle to which the arc-shaped through hole belongs.

5. The headphone headband sliding test device according to claim 1, characterized in that: A telescopic driving member is provided on the bottom surface of the first end, an output shaft of the telescopic driving member is connected to a limit frame, and the telescopic driving member is configured to change an overlapping area of a vertical projection profile of the limit frame and the arc-shaped through hole.

6. The headphone headband sliding test device according to claim 1, characterized in that: A fixing seat is provided on the surface of the support plate, and the fixing seat includes a fixing block with an arc-shaped groove and a clamping block provided in the arc-shaped groove. The arc-shaped groove is adapted to the shape of the headband, and the clamping block is used to fasten the headband.

7. The headphone headband sliding test device according to claim 1, characterized in that: The transmission assembly further includes a second end arranged opposite to the first end, and the second end is transmission-connected to a cooling assembly, and the cooling assembly is configured to continuously cool the telescopic connection between the headband and the earmuff of the headset.

8. The headphone headband sliding test device according to claim 7, characterized in that: The second end surface is provided with a limiting groove along the length direction, and the cooling component includes a guide rail arranged on the support plate, a slider slidably connected to the rail, a transmission rod arranged on the opposite surface of the slider, and a piston structure arranged on the end of the transmission rod away from the slider.

9. The headphone headband sliding test device according to claim 8, characterized in that: The piston structure includes a sleeve connected to the support plate, a heat dissipation plate connected to one end of the sleeve, and a piston connected to one end of the transmission rod away from the slider, wherein the piston is slidably connected to the sleeve.

10. The headphone headband sliding test device according to claim 9, characterized in that: The heat dissipation plate is in an arc shape, and a plurality of air holes communicating with the inner cavity of the sleeve are opened on the surface of the heat dissipation plate. The air holes face the telescopic connection between the headband and the earmuff during the headphone testing.

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