A positioning device for headphone testing

Abstract

This utility model discloses a positioning device for testing over-ear headphones, including a positioning frame with open sides. A support block is fixedly connected inside the positioning frame, and fixed rods are symmetrically fixedly connected to both sides of the support block. Fixed blocks are fixedly connected to the outer ends of the fixed rods, and a microphone is fixedly connected to the outer side of each fixed block. Four first connecting seats are evenly fixed to the fixed blocks, and support rods are hinged within the first connecting seats. The fixed rods are equipped with extension components for driving the extension components to unfold. The positioning frame is equipped with a driving component for driving the extension components on both sides to translate. A fixed column is fixedly connected to the top of the positioning frame, and support components for supporting the ear bridge of the over-ear headphones are symmetrically arranged on the left and right sides of the fixed column. In this utility model, the ear pads of the earcups are opened and positioned so that the sound-emitting center of the earcups is directly aligned with the microphone located in the center of the fixed block, improving stability and preventing the earcups from shifting and affecting the test results.

Description

Technical Field

[0001] This utility model relates to the technical field of a positioning device for testing headphones, and more particularly to a positioning device for testing headphones. Background Technology

[0002] With technological advancements and increasing consumer demands for superior audio experiences, the headphone market has experienced rapid growth. Over-ear headphones, due to their excellent sound quality, comfortable fit, and portability, have become the preferred choice for music lovers, gamers, and professional audio engineers. However, as market competition intensifies, headphone manufacturers need to ensure their products maintain a competitive edge in performance, quality, and user experience. Headphone testing positioning devices have emerged to address this need. These devices provide a repeatable testing environment, using adjustable supports and positioning components to position the headphones in a predetermined location, simulating headphone performance tests. During frequency response testing, a signal generator plays a sweep signal (20Hz-20kHz) through the headphones, and a microphone within the positioning device captures the sound. This microphone is then connected to an audio analyzer, which records the frequency response curve.

[0003] Chinese patent publication number CN222776326U discloses a positioning device for testing over-ear headphones, including a base, a linear drive mechanism mounted on the base, a first testing assembly and a second testing assembly mounted on the linear drive mechanism, and a first pressing mechanism and a second pressing mechanism mounted on the base. Both the first and second testing assemblies include an artificial ear connected to the linear drive mechanism and a support seat positioned above the artificial ear. This invention, with its first and second testing assemblies, allows for the pressing and positioning of the headphones by placing the two sound-producing units of the over-ear headphones flat on the first and second pressing mechanisms in cooperation. This eliminates the need for manual operation, provides fast and accurate positioning, and improves testing efficiency.

[0004] Existing positioning devices for testing over-ear headphones suffer from problems such as inaccurate earcup positioning and insufficient stability, and the earcup's sound-emitting part easily shifting from the microphone, affecting test results. To overcome these disadvantages, this invention provides a positioning device for testing over-ear headphones. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a positioning device for testing headphones.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a positioning device for testing headphones, comprising a positioning frame, wherein the positioning frame has an open structure on both sides, a support block is fixedly connected inside the positioning frame, a fixing rod is symmetrically fixedly connected to both sides of the support block, a fixing block is fixedly connected to the outer end of each fixing rod, a microphone is fixedly connected to the outer side of the fixing block, four first connecting seats are evenly fixedly connected to the fixing block, a support rod is hinged inside the first connecting seat, an extension component for driving the support rod to unfold is provided on the fixing rod, a driving component for driving the extension components on both sides to translate is provided on the positioning frame, a fixing column is fixedly connected to the top of the positioning frame, and a support component for supporting the ear bridge of the headphones is symmetrically arranged on the left and right sides of the fixing column.

[0007] Furthermore, the support assembly includes a slider slidably connected to a fixed rod, and a second connecting seat is fixedly connected to each position on the slider corresponding to the first connecting seat. A connecting rod is hinged inside the second connecting seat. A third connecting seat is fixedly connected to the support rod. The end of the connecting rod is hinged to the corresponding third connecting seat. The support rod has a curved structure and an anti-slip pad is fixedly connected to its end.

[0008] Furthermore, the drive assembly includes a slide groove on the front side of the positioning frame, a bidirectional screw is rotatably connected in the slide groove, the slider is an L-shaped structure, the sliders on both sides are slidably connected in the slide groove, the bidirectional screw has symmetrically opened threaded grooves with opposite directions of rotation, the slider is threadedly connected to the corresponding threaded groove on the bidirectional screw, and one end of the bidirectional screw extends to the outside of the positioning frame and is fixedly connected to a knob.

[0009] Furthermore, the support assembly includes a support platform that is inclinedly fixed to a fixed column, and a pressing assembly is provided on the support platform.

[0010] Furthermore, the pressing assembly includes a pressing block, and a telescopic rod is fixedly connected between the pressing block and the support platform. A return spring is sleeved on the outer side of the telescopic rod, and the two ends of the return spring are fixedly connected to the pressing block and the support platform, respectively.

[0011] Furthermore, several pressure heads are uniformly fixed to the bottom side of the pressure block, and the pressure heads are made of elastic rubber.

[0012] The beneficial effects of this utility model are: When in use, this positioning device for testing headphones has the following advantages: 1. In this solution, the earcups of the headphones are placed outside the fixed blocks on both sides, and four support rods are used to abut against the inside of the earcups. The drive component drives the expansion components on both sides to move to both sides. The expansion components drive the four support rods to rotate around the corresponding first connecting seat and open, opening and positioning the ear pads of the earcups so that the sound center of the earcups is directly opposite the microphone set in the center of the fixed block, improving stability, allowing the microphone to collect sound, and avoiding the earcups and microphone from being misaligned and affecting the test results.

[0013] 2. In this solution, the ear bridge of the headphones to be tested is hung on the support platform. The pressure block, together with the telescopic rod and the return spring, positions and fixes the ear bridge, making it easy to install and remove and improving the convenience of use. Attached Figure Description

[0014] To more clearly illustrate the technical solution of this utility model, the drawings used in the description of the specific embodiments 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.

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a cross-sectional schematic diagram of the positioning frame of this utility model; Figure 3 This is a schematic diagram of the structure of the spreading component of this utility model; Figure 4 For the present utility model Figure 1 Enlarged view of point A in the middle.

[0016] The attached figures are labeled as follows: 1. Positioning frame; 2. Support block; 3. Fixing rod; 4. Slider; 5. Slide groove; 6. Bidirectional screw; 7. Knob; 8. Fixing block; 9. Microphone; 10. First connecting seat; 11. Support rod; 12. Second connecting seat; 13. Third connecting seat; 14. Connecting rod; 15. Fixing column; 16. Support platform; 17. Pressure block; 18. Telescopic rod; 19. Return spring; 20. Pressing head. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0018] like Figure 1-4As shown, the present invention has the following specific embodiments.

[0019] Example 1

[0020] A positioning device for testing headphones includes a positioning frame 1 with open sides. A support block 2 is fixed inside the positioning frame 1. Fixed rods 3 are symmetrically fixed to both sides of the support block 2. Fixed blocks 8 are fixed to the outer ends of the fixed rods 3. Microphones 9 are fixed to the outer sides of the fixed blocks 8. Four first connecting seats 10 are evenly fixed to the fixed blocks 8. Support rods 11 are hinged inside the first connecting seats 10. The fixed rods 3 are provided with a support assembly for driving the support rods 11 to unfold. The positioning frame 1 is provided with a drive assembly for driving the two side support assemblies to translate. A fixed column 15 is fixed to the top of the positioning frame 1. Support assemblies for supporting the ear bridge of the headphones are symmetrically arranged on the left and right sides of the fixed column 15.

[0021] In this embodiment, as Figure 1-4 As shown, the ear bridge of the headphones to be tested is hung on the fixed post 15, and the support component is used to press and position the entire ear bridge. The ear cup is placed outside the fixed blocks 8 on both sides, and is supported by four support rods 11. The drive component drives the expansion components on both sides to move to both sides. The expansion components drive the four support rods 11 to rotate around the corresponding first connecting seat 10 to open and open the ear pads of the ear cup for testing. The microphone 9 collects sound and is connected to the audio analyzer. The analyzer records the frequency response curve.

[0022] Example 2

[0023] The support assembly includes a slider 4 slidably connected to a fixed rod 3. A second connecting seat 12 is fixedly connected to each slider 4 at a position corresponding to the first connecting seat 10. A connecting rod 14 is hinged inside the second connecting seat 12. A third connecting seat 13 is fixedly connected to the support rod 11. The end of the connecting rod 14 is hinged to the corresponding third connecting seat 13. The support rod 11 has a curved structure and an anti-slip pad is fixedly connected to its end. The drive assembly includes a slide groove 5 opened on the front side of the positioning frame 1. A bidirectional screw 6 is rotatably connected inside the slide groove 5. The slider 4 has an L-shaped structure. The sliders 4 on both sides are slidably connected inside the slide groove 5. The bidirectional screw 6 has symmetrically opened threaded grooves with opposite directions of rotation. The slider 4 is threadedly connected to the corresponding threaded groove on the bidirectional screw 6. One end of the bidirectional screw 6 extends outside the positioning frame 1 and is fixedly connected to a knob 7.

[0024] In this embodiment, as Figure 1 , 2As shown in Figure 3, the earcups are placed outside the fixed blocks 8 on both sides, and are supported by four support rods 11 on the inside of the earcups. Rotating the knob 7 drives the bidirectional screw 6 to rotate, which in turn drives the sliders 4 on both sides to move away from each other along the slide groove 5 and the fixed rod 3. Through the combined action of the second connecting seat 12, the third connecting seat 13 and the connecting rod 14, the four support rods 11 are driven to unfold outward around the corresponding first connecting seat 10. The support rods 11 open the earcups for sound testing.

[0025] Example 3

[0026] The support assembly includes a support platform 16 that is inclinedly fixed to the fixed column 15. A pressing assembly is provided on the support platform 16. The pressing assembly includes a pressing block 17. A telescopic rod 18 is fixed between the pressing block 17 and the support platform 16. A return spring 19 is sleeved on the outside of the telescopic rod 18. The two ends of the return spring 19 are fixedly connected to the pressing block 17 and the support platform 16 respectively. Several pressing heads 20 are evenly fixed to the bottom side of the pressing block 17. The pressing heads 20 are made of elastic rubber.

[0027] In this embodiment, as Figure 1 , 4 As shown, the ear bridge of the headphones to be tested is hung on the support platform 16. The pressure block 17, together with the telescopic rod 18 and the return spring 19, positions and fixes the ear bridge, making it easy to install and remove. The pressure head 20 increases the holding friction.

[0028] The working principle of this utility model is as follows: The ear bridge of the headphone to be tested is hung on the support platform 16. The pressure block 17, together with the telescopic rod 18 and the return spring 19, positions and fixes the ear bridge as a whole, making it easy to install and remove. The earcups are placed outside the fixing blocks 8 on both sides, and are supported by four support rods 11 against the inner side of the ear pads on the inner side of the earcups. Turning the knob 7 drives the bidirectional screw 6 to rotate, which in turn drives the sliders 4 on both sides to move in opposite directions along the slide groove 5 and the fixing rod 3. This is achieved through the second connecting seat 12, the third connecting seat 13, and the connecting rod 19. The linkage of rod 14 causes the four support rods 11 to extend outward around the corresponding first connecting seat 10. The support rods 11 open and position the ear pads of the earmuff, so that the sound center of the earmuff is directly opposite the microphone 9 set in the center of the fixed block 8. The microphone 9 collects the sound. To avoid the earmuff and microphone 9 being misaligned and affecting the test results, when performing frequency response testing, the signal generator plays a sweep frequency signal (20Hz-20kHz) through the headphones. The microphone 9 collects the sound and connects the microphone 9 to the audio analyzer. The analyzer records the frequency response curve.

[0029] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to any specific implementation. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A positioning device for headphone testing, comprising a positioning stand (1), characterized in that: The positioning frame (1) has an open structure on both sides. A support block (2) is fixed inside the positioning frame (1). Fixed rods (3) are symmetrically fixed on both sides of the support block (2). Fixed blocks (8) are fixed at the outer ends of the fixed rods (3). Microphones (9) are fixed on the outer side of the fixed blocks (8). Four first connecting seats (10) are evenly fixed on the fixed blocks (8). A support rod (11) is hinged inside the first connecting seat (10). A support assembly for driving the support rod (11) to unfold is provided on the fixed rod (3). A drive assembly for driving the support assembly on both sides to move is provided on the positioning frame (1). A fixed column (15) is fixed at the top of the positioning frame (1). Support assemblies for supporting the ear bridge of the headphone are symmetrically arranged on the left and right sides of the fixed column (15).

2. A positioning device for headphone testing according to claim 1, characterized in that: The support assembly includes a slider (4) slidably connected to a fixed rod (3). A second connecting seat (12) is fixedly connected to the slider (4) at a position corresponding to the first connecting seat (10). A connecting rod (14) is hinged inside the second connecting seat (12). A third connecting seat (13) is fixedly connected to the support rod (11). The end of the connecting rod (14) is hinged to the corresponding third connecting seat (13). The support rod (11) has a curved structure and an anti-slip pad is fixedly connected to its end.

3. A positioning device for headphone testing according to claim 2, characterized in that: The drive assembly includes a slide groove (5) on the front side of the positioning frame (1), a bidirectional screw (6) is rotatably connected in the slide groove (5), the slider (4) is an L-shaped structure, and the sliders (4) on both sides are slidably connected in the slide groove (5). The bidirectional screw (6) is symmetrically provided with threaded grooves with opposite directions of rotation. The slider (4) is threadedly connected to the corresponding threaded groove on the bidirectional screw (6). One end of the bidirectional screw (6) extends to the outside of the positioning frame (1) and is fixedly connected with a knob (7).

4. A positioning device for headphone testing according to claim 1, characterized in that: The support assembly includes a support platform (16) that is inclinedly fixed to a fixed column (15), and a pressing assembly is provided on the support platform (16).

5. A positioning device for headphone testing according to claim 4, characterized in that: The pressing assembly includes a pressing block (17), and a telescopic rod (18) is fixedly connected between the pressing block (17) and the support platform (16). A return spring (19) is sleeved on the outside of the telescopic rod (18), and the two ends of the return spring (19) are fixedly connected to the pressing block (17) and the support platform (16) respectively.

6. A positioning device for headphone testing according to claim 5, characterized in that: The bottom side of the pressure block (17) is uniformly fixed with several pressure heads (20), and the pressure heads (20) are made of elastic rubber.

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