Test fixture and sound listening test equipment

Abstract

The embodiment of the present invention discloses a test fixture and a listening test device for a listening test of a speaker unit. The speaker unit has a first sound-emitting surface and a second sound-emitting surface that are relatively arranged. The test fixture includes a base and a cover plate. The cover plate is relatively arranged with the base and can move relative to the base. When the cover plate moves to a first working position relative to the base, a cavity that can accommodate the speaker unit is formed between the cover plate and the base. A first sound outlet is arranged at the lower end of the base, and a second sound outlet is arranged at the upper end of the cover plate, and the first sound outlet corresponds to the first sound-emitting surface, and the second sound outlet corresponds to the second sound-emitting surface. Therefore, during the test, after the speaker unit is installed in the test fixture, the actual installation effect can be better restored, thereby ensuring the accuracy of the listening test results of the double-sided sound-emitting speaker unit, and also improving the test efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of speaker testing, and particularly relates to a testing fixture and a listening test device. Background Art

[0002] Before the speaker unit is installed in an electronic device, a listening test needs to be carried out to ensure the quality of the speaker unit. To improve the efficiency of the listening test, a testing fixture is used in related technologies to install the speaker unit to be tested. The double-sided sounding speaker unit can achieve the effect of two-way sound emission by setting two sets of vibration components. Traditional listening test fixtures are mostly designed for single-sided sounding speaker units, and the double-sided sounding speaker unit cannot be tested with traditional listening test fixtures; even if it can be used, the adaptation degree is relatively low, and the sound field after the double-sided sounding speaker unit is actually installed cannot be accurately restored during the test, which easily leads to misjudgment and affects the accuracy of the test results. Summary of the Invention

[0003] The purpose of the embodiments of the present invention is to provide a testing fixture and a listening test device, which can meet the listening test requirements of double-sided sounding speaker units.

[0004] In a first aspect, the embodiments of the present invention provide a testing fixture for the listening test of a speaker unit. The speaker unit has a first sounding surface and a second sounding surface arranged oppositely. The testing fixture includes a base and a cover plate; the lower end of the base has a first sound outlet; the cover plate is arranged oppositely to the base and can move relative to the base, and the upper end of the cover plate has a second sound outlet; wherein, when the cover plate moves relative to the base to the first working position, a cavity capable of accommodating the speaker unit is formed between the cover plate and the base, the first sound outlet corresponds to the first sounding surface, and the second sound outlet corresponds to the second sounding surface. Thus, during the test, the sound waves generated by the first sounding surface of the speaker unit can be transmitted out from the first sound outlet, and the sound waves generated by the second sounding surface can be transmitted out from the second sound outlet. After the speaker unit is installed in the testing fixture, the actual installation effect can be better restored, thereby ensuring the accuracy of the listening test results of the double-sided sounding speaker unit and improving the test efficiency at the same time.

[0005] In some embodiments, the rear side of the cavity has an opening; the testing fixture further includes a movable pressing block, at least part of the movable pressing block is arranged at the rear side of the opening and can move back and forth relative to the base; wherein, when the cover plate is in the first working position and the movable pressing block moves relative to the base to the second working position, the movable pressing block can close the opening. Through this setting, it is beneficial to ensure the sealing performance inside the testing fixture during the test, ensure the accuracy of the test results, and facilitate the installation and removal of the speaker unit.

[0006] In some embodiments, the movable pressing block has a first inclined surface; the test fixture further includes a pushing block having a second inclined surface corresponding to the first inclined surface; wherein, when the pushing block moves downward, the second inclined surface can push the first inclined surface, thereby driving the movable pressing block to move in a direction close to the opening; when the pushing block moves downward to the third working position, the movable pressing block moves to the second working position. Through this setting, the convenience of operating the test fixture and the flexibility of the setting scenario can be improved.

[0007] In some embodiments, the pushing block is fixedly connected to the cover plate; when or after the cover plate moves to the first working position, the pushing block moves to the third working position. Through this setting, the pushing block and the cover plate can move synchronously, which is beneficial to reducing the number of external forces applied during the operation of the test fixture. At the same time, when the cover plate moves into place and the base positions the speaker unit, the movable slider then seals the cavity, which is beneficial to ensuring the positioning accuracy of the speaker unit during testing and the sealing performance inside the test fixture, thereby further ensuring the accuracy of the test results.

[0008] In some embodiments, the test fixture further includes a reset device configured to be able to drive the movable pressing block to move in a direction away from the opening. Through this setting, the convenience of operating the test fixture can be improved, which is beneficial to improving the test efficiency.

[0009] In some embodiments, the reset device includes a first connecting member and a second connecting member, and the first connecting member is elastically connected to the second connecting member; the first connecting member is fixedly connected to the base, and the second connecting member is fixedly connected to the movable pressing block. Through this setting, the stability of the reset device can be improved, which is beneficial to ensuring the reliability of the test fixture during operation and the accuracy of the test results.

[0010] In some embodiments, the base has a guiding groove extending in the front-rear direction, and the movable pressing block is disposed in the guiding groove and can move along the guiding groove. Through this setting, it is beneficial to ensuring the reliability of the test fixture during operation and the accuracy of the test results.

[0011] In some embodiments, the test fixture further includes a conductive probe connected to the movable pressing block; wherein, when the movable pressing block moves to the second working position, the conductive probe can be electrically connected to the speaker unit in the cavity. Through this setting, it is convenient to transmit electrical signals to the speaker unit during testing.

[0012] In some embodiments, the test fixture further includes a first seal and a second seal; the first seal is disposed at the upper end of the base and / or the lower end of the cover plate; the second seal is disposed on at least one of the front end of the movable pressing block, the end face of the base opposite to the movable pressing block, or the end face of the cover plate opposite to the movable pressing block. By this arrangement, the sealing performance of the cavity during testing can be improved, and the accuracy of the test results can be further ensured.

[0013] In some embodiments, the cavity is larger than the speaker unit, so that when the speaker unit is positioned in the cavity, there is a gap between the speaker unit and at least one side wall of the cavity. By this arrangement, the sound emission effect after the actual installation of the speaker unit can be better simulated, which is beneficial to further ensuring the accuracy of the test results.

[0014] In some embodiments, the base has a first positioning groove, and the cover plate has a second positioning groove opposite to the first positioning groove. The first positioning groove and the second positioning groove are used to position the speaker unit, and there is a predetermined distance between the first positioning groove and the second positioning groove and at least one side wall of the cavity. By this arrangement, it is convenient to position the speaker unit and simulate the effect after the actual installation of the speaker unit, which is beneficial to further ensuring the accuracy of the test results.

[0015] In some embodiments, the base has a first mold closing guiding structure, and the cover plate has a second mold closing guiding structure corresponding to the first mold closing guiding structure. The first mold closing guiding structure and the second mold closing guiding structure cooperate to guide the cover plate to move relative to the base to the first working position. By this arrangement, it is beneficial to the positioning between the cover plate and the base during testing, and it is beneficial to further ensuring the accuracy of the test results.

[0016] In some embodiments, the base has a third mold closing guiding structure, and the movable pressing block has a fourth mold closing guiding structure corresponding to the third mold closing guiding structure. The third mold closing guiding structure and the fourth mold closing guiding structure cooperate to guide the movable pressing block to move relative to the base to the second working position. By this arrangement, it is beneficial to the positioning of the movable pressing block during testing, and it is beneficial to further ensuring the accuracy of the test results.

[0017] In some embodiments, the size of the cross-section of the first sound outlet perpendicular to the axis gradually increases from top to bottom, and the size of the cross-section of the second sound outlet perpendicular to the axis gradually increases from bottom to top. By this arrangement, it is beneficial to reduce the sound loop caused by the channel, better restore the sound emission effect after the actual installation of the speaker unit, and is beneficial to further ensuring the accuracy of the test results.

[0018] Second aspect, embodiments of the present invention further provide a listening test device, including a test fixture as described in the first aspect and a driving component; the driving component includes a driving device configured to drive the cover plate to move up and down relative to the base. By adopting the test fixture of the first aspect and driving the cover plate by the driving device, the test efficiency of the listening test of the speaker unit with double-sided sound emission can be improved, and at the same time, it is convenient to ensure the consistency of the pressure when the test fixture is tightened, and the accuracy of the test result is ensured.

[0019] In some embodiments, the listening test device further includes a mounting table, the mounting table includes a panel, the panel has a base mounting structure for mounting the base, and the panel also has an avoidance structure; wherein, when the base is connected to the base mounting structure, the first sound outlet is exposed to the avoidance structure. By this setting, the formation of a loop due to the blockage of sound can be reduced, which is beneficial to accurately restoring the sound emission effect of the speaker unit after actual installation during the test, and further ensuring the accuracy of the test result.

[0020] In some embodiments, the mounting table further includes a bottom plate and support columns; the bottom plate is spaced below the panel; the support columns are supported between the panel and the bottom plate, and the support columns are away from the avoidance structure. By this setting, the formation of a loop due to the blockage of sound can be reduced, which is beneficial to accurately restoring the sound emission effect of the speaker unit after actual installation during the test, and further ensuring the accuracy of the test result.

[0021] In some embodiments, the panel further has a notch, and the notch extends from one side of the base mounting structure to the edge of the panel. By this setting, the formation of a loop due to the blockage of sound can be reduced, which is beneficial to accurately restoring the sound emission effect of the speaker unit after actual installation during the test, and further ensuring the accuracy of the test result.

[0022] In some embodiments, the base is detachably connected to the panel. By this setting, the loading and unloading of the base are facilitated, which is beneficial to improving the wide applicability of the listening test device.

[0023] In some embodiments, the driving component further includes a support frame, the support frame is arranged on one side of the panel, the support frame has a hollow structure, and the penetration direction of the hollow structure is opposite to the base; wherein, the driving device is arranged on the support frame. By this setting, the formation of a loop due to the blockage of sound can be reduced, which is beneficial to accurately restoring the sound emission effect of the speaker unit after actual installation during the test, and further ensuring the accuracy of the test result. Description of the Drawings

[0024] Through the following description of the embodiments of the present invention with reference to the accompanying drawings, the above and other objects, features, and advantages of the present invention will become clearer. In the drawings:

[0025] Figure 1 is a schematic perspective view of a test fixture according to an embodiment of the present invention as observed from the upper right front;

[0026] Figure 2 is a top view of a test fixture according to an embodiment of the present invention;

[0027] Figure 3 is a cross-sectional view of a test fixture according to an embodiment of the present invention taken along the plane A-A;

[0028] Figure 4 is a schematic perspective view of a test fixture according to another embodiment of the present invention as observed from the upper right front;

[0029] Figure 5 is a schematic perspective view of a test fixture according to another embodiment of the present invention as observed from the upper left rear;

[0030] Figure 6 is a schematic perspective view of a base according to an embodiment of the present invention as observed from the upper right rear;

[0031] Figure 7 is a top view of a base according to an embodiment of the present invention;

[0032] Figure 8 is a cross-sectional view of a base according to an embodiment of the present invention taken along the plane B-B;

[0033] Figure 9 is a schematic perspective view of a cover plate according to an embodiment of the present invention as observed from the upper right front;

[0034] Figure 10 is a schematic perspective view of a cover plate according to an embodiment of the present invention as observed from the lower right rear;

[0035] Figure 11 is a bottom view of a cover plate according to an embodiment of the present invention;

[0036] Figure 12 is a cross-sectional view of a cover plate according to an embodiment of the present invention taken along the plane C-C;

[0037] Figure 13 is an exploded structural view of a test fixture according to another embodiment of the present invention;

[0038] Figure 14 is a structural view of a reset device of a test fixture according to an embodiment of the present invention;

[0039] Figure 15Schematic perspective view of the test fixture according to another embodiment of the present invention, observed from the upper left rear;

[0040] Figure 16 Top view of the test fixture according to another embodiment of the present invention;

[0041] Figure 17 Schematic view of the test fixture according to another embodiment of the present invention, observed from the upper left rear when the cover plate and the base are separated;

[0042] Figure 18 Schematic view of the test fixture according to another embodiment of the present invention, observed from the upper right front when the cover plate and the base are separated;

[0043] Figure 19 Cross-sectional view of the test fixture according to another embodiment of the present invention, cut along the D-D plane;

[0044] Figure 20 Schematic perspective view of the sound listening test device according to an embodiment of the present invention;

[0045] Figure 21 Front view of the sound listening test device according to an embodiment of the present invention;

[0046] Figure 22 Top view of the sound listening test device according to an embodiment of the present invention;

[0047] Figure 23 Schematic perspective view of the panel according to an embodiment of the present invention, observed from the upper right front;

[0048] Figure 24 Top view of the panel according to an embodiment of the present invention.

[0049] Explanation of reference numerals:

[0050] 100 - Test fixture; 110 - Base; 111 - First sound outlet; 112 - Guide groove; 113 - First positioning groove; 114 - First mold closing guide structure; 115 - Third mold closing guide structure; 116 - Boss; 120 - Cover plate; 121 - Second sound outlet; 122 - Second positioning groove; 123 - Second mold closing guide structure; 124 - Connecting member; 130 - Movable pressing block; 131 - First inclined surface; 132 - Fourth mold closing guide structure; 140 - Pusher block; 141 - Second inclined surface; 150 - Reset device; 151 - First connecting member; 152 - Second connecting member; 160 - Conductive probe; 170 - First seal; 180 - Second seal; 190 - Cavity; 191 - Opening;

[0051] 200 - Driving assembly; 210 - Driving device; 220 - Support frame; 221 - Hollow structure;

[0052] 300 - Mounting table; 310 - Panel; 311 - Avoidance structure; 312 - Notch; 313 - Base mounting structure; 314 - Base mounting guide pin; 320 - Bottom plate; 330 - Support column;

[0053] 400 - Speaker unit; 410 - First sounding surface; 420 - Second sounding surface. Detailed implementation manners

[0054] The present invention will be described below based on embodiments, but the present invention is not limited to these embodiments. In the following detailed description of the present invention, some specific details are described in detail. Those skilled in the art can fully understand the present invention without the description of these details. In order to avoid obscuring the essence of the present invention, well-known methods, processes, procedures, elements, and circuits are not described in detail.

[0055] In addition, those of ordinary skill in the art should understand that the drawings provided herein are for illustrative purposes only, and the drawings are not necessarily drawn to scale.

[0056] Unless the context clearly requires otherwise, the words such as "including" and "comprising" in the specification shall be construed in an inclusive sense rather than an exclusive or exhaustive sense; that is, the meaning of "including but not limited to".

[0057] In the description of the present invention, it should be understood that the terms "first", "second", etc. are only used for descriptive purposes and cannot be construed as indicating or implying relative importance. In addition, in the description of the present invention, unless otherwise specified, the meaning of "a plurality" is two or more.

[0058] When an element or layer is referred to as being "on", "joined to", "connected to", or "coupled to" another element or layer, it can be directly on the other element or layer, directly joined, connected, or coupled to the other element or layer, or there may be intermediate elements or layers. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0059] Figures 1 - 19 It is a schematic structural diagram of a test fixture of several different embodiments of the present invention. Among them, Figure 3 is Figure 2 a cross-sectional view of the test fixture 100 shown in Figure 8 is Figure 7 an enlarged cross-sectional view of the base 110 shown in Figure 12 is Figure 11 a cross-sectional view of the cover plate 120 shown in Figure 14The cutting plane is parallel to the B-B plane and the C-C plane; Figure 19 is Figure 16 a cross-sectional view of the test fixture 100 shown in Figure 19 cut along the D-D plane.

[0060] Referring to Figures 1 - 19 , the test fixture 100 of the embodiment of the present invention includes a base 110 and a cover plate 120, and the cover plate 120 is disposed above the base 110. The cover plate 120 and the base 110 can move relative to each other. When the cover plate 120 moves relative to the base 110 to the first station (referring to Figures 1 - 5 and Figure 15 and Figure 19 ), the cover plate 120 presses on the base 110, and a cavity 190 capable of accommodating the speaker unit 400 is formed between the cover plate 120 and the base 110. The test fixture 100 has at least one sound outlet 111, 121, and the sound outlets 111, 121 communicate with the cavity 190. The speaker unit 400 has at least one sounding surface 410, 420. When performing a listening test on the speaker unit 400, the speaker unit 400 is placed on the base 110, the cover plate 120 is moved to the first station, so that the speaker unit 400 is placed between the cover plate 120 and the base 110, and the positions of the sounding surfaces 410, 420 of the speaker unit 400 correspond to the sound outlets 111, 121, so that the sound waves generated by the sounding surfaces can be transmitted from the sound outlets to the outside of the test fixture 100.

[0061] The test fixture 100 of the embodiment of the present invention can be applied to a variety of speaker units 400. In some embodiments, the test fixture 100 can be applied to the listening test of a speaker unit 400 with double-sided sound emission, and the speaker unit 400 has a first sounding surface 410 and a second sounding surface 420 that are oppositely arranged. Referring to Figure 3 , Figures 6 - 12 and Figure 19 , the test fixture 100 has two sound outlets 111, 121, and the two sound outlets 111, 121 are respectively a first sound outlet 111 and a second sound outlet 121. The first sound outlet 111 is disposed at the lower end of the base 110, and the second sound outlet 121 is disposed at the upper end of the cover plate 120. When the cover plate 120 moves to the first station (referring to Figure 3 ), the first sounding surface 410 of the speaker unit 400 placed in the cavity 190 is aligned with the first sound outlet 111, and the second sounding surface 420 is aligned with the second sound outlet 121; the sound waves generated by the first sounding surface 410 can be transmitted from the first sound outlet 111, and the sound waves generated by the second sounding surface 420 can be transmitted from the second sound outlet 121.

[0062] The test fixture 100 has a product positioning structure for positioning the speaker unit 400, so that the sounding surface of the speaker unit 400 can be aligned with the corresponding sound outlet. The form of the product positioning structure can be designed according to the shape, structure, etc. of the speaker unit 400. In some embodiments, referring to Figures 6 - 12 , the product positioning structure may include a first positioning groove 113 and a second positioning groove 122. The upper end of the base 110 has the first positioning groove 113, and the lower end of the cover plate 120 has the second positioning groove 122 opposite to the first positioning groove 113. The first positioning groove 113 and the second positioning groove 122 cooperate to position the speaker unit 400. The sizes and shapes of the first positioning groove 113 and the second positioning groove 122 correspond to the outer contour of the speaker unit 400.

[0063] In some embodiments, referring to Figure 3 , the cavity 190 is enclosed by both the base 110 and the cover plate 120; in other embodiments, the cavity 190 can also be enclosed by more than two components. For example, Figures 4 - 5 and Figures 13 - 19 the cavity 190 of the test fixture 100 shown in is enclosed by at least the base 110, the cover plate 120 and the movable slider 130; the specific setting method can be selected according to the needs of the listening test. During the test, placing the speaker unit 400 in the cavity 190 can ensure good airtightness to ensure the accuracy of the test results.

[0064] Referring to Figure 3 , Figure 13 and Figure 19 , in some embodiments, the size of the cavity 190 in the test fixture 100 is larger than the outer contour size of the speaker unit 400, so that when the speaker unit 400 is positioned in the cavity 190, there is still remaining space in the cavity 190, and there is a gap between the speaker unit 400 and at least one side wall of the cavity 190 to simulate the effect of the speaker unit 400 assembled in the electronic device, ensure that the sound field during the test is basically the same as the sound field after installation, and ensure the accuracy of the listening test results. At the same time, the cavity 190 can also amplify the sound generated by the speaker unit 400, which is convenient for distinguishing the sound emitted by the speaker unit 400 during the listening test. In some embodiments, a predetermined distance can be provided between the first positioning groove 113 and the second positioning groove 122 and at least one side wall of the cavity 190. For example, a predetermined distance can be provided between each edge of the first positioning groove 113 and the second positioning groove 122 and the corresponding side wall of the cavity 190.

[0065] Referring to Figure 3 , Figures 6 - 12 and Figure 19, the size of the cross-section of the first sound outlet 111 perpendicular to the axis gradually increases from top to bottom, and the size of the cross-section of the second sound outlet 121 perpendicular to the axis gradually increases from bottom to top. That is to say, the first sound outlet 111 and the second sound outlet 121 are flared structures similar to trumpet mouths, which is beneficial to guiding and concentrating the direction of sound wave propagation, avoiding the scattering of sound waves, and facilitating the discrimination of sounds in the listening test.

[0066] The cover plate 120 and the base 110 can be movably connected through a connecting member. For example, the cover plate 120 and the base 110 can be slidably connected up and down through a guide rail; alternatively, the cover plate 120 and the base 110 can also be separately arranged. In some embodiments, referring to Figures 6 - 12 and Figures 17 - 18 , the base 110 includes a first mold clamping guiding structure 114, and the cover plate 120 includes a second mold clamping guiding structure 123. The first mold clamping guiding structure 114 and the second mold clamping guiding structure 123 cooperate to guide the cover plate 120 to accurately move to the first working position. In one implementation manner, the first mold clamping guiding structure 114 can be a guiding pin protruding from the upper end surface of the base 110, and the second mold clamping guiding structure 123 can be a guiding hole corresponding to the guiding pin on the cover plate 120. When the cover plate 120 is connected to the base 110, align the second mold clamping guiding structure 123 with the first mold clamping guiding structure 114, and the cover plate 120 can move downward along a predetermined trajectory to the first working position, so as to facilitate the positioning between the cover plate 120 and the base 110. Of course, the first mold clamping guiding structure 114 and the second mold clamping guiding structure 123 can also adopt other forms. For example, the first mold clamping guiding structure 114 can be set as a guiding groove, and the second mold clamping guiding structure 123 can be set as a corresponding guiding surface, etc. The number of the first mold clamping guiding structure 114 and the second mold clamping guiding structure 123 can be arbitrarily set according to needs. For example, Figures 6 - 12 the first mold clamping guiding structure 114 and the second mold clamping guiding structure 123 in

[0067] Referring to Figure 3 and Figure 19, the test fixture 100 includes a first seal 170. The first seal 170 is connected to the cover plate 120 or the base 110 and is used to seal between the contact surfaces of the cover plate 120 and the base 110 to ensure the tightness of the cavity 190 during the test and the accuracy of the sound listening test result. The first seal 170 is disposed at the upper end of the base 110 and / or the lower end of the cover plate 120. In one embodiment, the first seal 170 is fixed to the lower end of the cover plate 120. The first seal 170 may include at least one of rubber, silica gel, polytetrafluoroethylene or other sealing materials; the first seal 170 may be disposed at a predetermined position by bonding, fastener connection, snap connection or other connection methods, and the embodiments of the present invention do not limit this.

[0068] Refer to Figures 4 - 5 And Figures 13 - 19 , the test fixture 100 further includes a conductive probe 160, which is used to be electrically connected to the speaker unit 400 to transmit an electrical signal and drive the speaker unit 400 to emit sound. According to the position of the signal access pad on the speaker unit 400, the conductive probe 160 may be disposed at a corresponding position of the test fixture 100, for example, it may be disposed on the base 110, the cover plate 120 or other positions. During the test, the conductive probe 160 is connected to a sweep frequency meter, and the sweep frequency meter drives the tested speaker unit 400 to emit sound with a set excitation signal, and the performance of the speaker unit 400 is judged by listening with the human ear or an analysis device.

[0069] Refer to Figures 4 - 5 And Figures 13 - 19 , in some embodiments, the test fixture 100 further includes a movable pressing block 130. Refer to Figure 13 , one side of the cavity 190 has an opening 191, and the movable pressing block 130 is movable relative to the opening 191 to approach or move away from the opening 191. When the movable pressing block 130 moves to the second working position and the cover plate 120 is located at the first working position (refer to Figure 19 ), the movable pressing block 130 can close the opening 191 of the cavity 190 to ensure airtightness and the accuracy of the test result.

[0070] A guiding structure for guiding the movement of the movable pressing block 130 may be provided on the test fixture 100. In some embodiments, the base 110 has a guiding groove 112 extending in the front-rear direction, and the movable pressing block 130 is disposed in the guiding groove 112 and can move along the guiding groove 112.

[0071] Refer to Figure 5 And Figure 13, in some embodiments, the base 110 has a third mold - closing guiding structure 115, and the movable pressure block 130 has a fourth mold - closing guiding structure 132 corresponding to the third mold - closing guiding structure 115. The third mold - closing guiding structure 115 and the fourth mold - closing guiding structure 132 cooperate to play a guiding and positioning role during the process of the movable pressure block 130 moving relative to the base 110 to the second working position. In one implementation, the third mold - closing guiding structure 115 can be a guiding hole, and the fourth mold - closing guiding structure 132 can be a guiding pin protruding from the front end of the movable pressure block 130. When the cover plate 120 is connected to the base 110 and the fourth mold - closing guiding structure 132 is aligned with the third mold - closing guiding structure 115, the movable pressure block 130 can move forward along a predetermined trajectory to the second working position. Of course, the third mold - closing guiding structure 115 and the fourth mold - closing guiding structure 132 can also adopt other forms. For example, the third mold - closing guiding structure 115 can be set as a guiding pin, and the fourth mold - closing guiding structure 132 can be set as a corresponding guiding hole, etc. The number of the third mold - closing guiding structure 115 and the fourth mold - closing guiding structure 132 can be set arbitrarily according to needs. For example, Figure 13 the third mold - closing guiding structure 115 and the fourth mold - closing guiding structure 132 in

[0072] can be two respectively, so as to perform circumferential positioning between the movable pressure block 130 and the base 110.

[0073] In some embodiments, referring to Figures 4 - 5 and Figures 13 - 19 , the test fixture 100 further includes a reset device 150. The reset device 150 can drive the movable pressure block 130 to move away from the opening 191, so as to open the test fixture 100 to take out the speaker unit 400 in the test fixture 100 or put the speaker unit 400 into the test fixture 100.

[0074] The reset device 150 can adopt any structure or device capable of resetting the movable pressing block 130, which can be powered or unpowered. In some embodiments, the reset device 150 can be an elastic device. The reset device 150 is connected to the movable pressing block 130 or connected to both the movable pressing block 130 and the base 110. The reset device 150 can drive the movable pressing block 130 to move and reset by conducting elastic force to the movable pressing block 130. The elastic device can be a spring, a spring sheet, an elastic telescopic rod or other elastic devices.

[0075] Referring to Figure 14 , in one embodiment, the reset device 150 includes a first connecting member 151 and a second connecting member 152, and the first connecting member 151 and the second connecting member 152 are connected by an elastic connection method. For example, the first connecting member 151 is a piston rod, the second connecting rod is a sleeve, a part of the piston rod is arranged in the sleeve and can slide along the sleeve, and a compression spring is connected between the bottom surface of the inner wall of the piston rod and the sleeve. The reset device 150 is arranged in the front-rear direction, and there is a tendency for the first connecting member 151 and the second connecting member 152 to move away from each other. The first connecting member 151 is fixedly connected to the base 110, and the second connecting member 152 is fixedly connected to the movable pressing block 130. When the forward external force applied to the movable pressing block 130 is removed, the elastic force of the reset device 150 causes the movable pressing block 130 and the base 110 to move away from each other. A boss 116 can be arranged on the base 110 to facilitate the installation of the reset device 150, and the first connecting member 151 can be fixed to the boss 116.

[0076] Preferably, referring to Figure 14 , the test fixture 100 further includes a second sealing member 180, and the second sealing member 180 is used for sealing the contact surfaces between the movable pressing block 130 and the base 110 and the cover plate 120 to ensure the airtightness of the cavity 190 during the test, so as to ensure the accuracy of the test results. The second sealing member 180 is arranged on at least one of the front end of the movable pressing block 130, the end face of the base 110 opposite to the movable pressing block 130, or the end face of the cover plate 120 opposite to the movable pressing block 130. For example, referring to Figure 14 , in one embodiment, the second sealing member 180 is arranged at the front end of the movable pressing block 130. The second sealing member 180 can include at least one of natural rubber, silicone rubber, nitrile rubber, acrylate rubber, nylon, polytetrafluoroethylene or other sealing materials; the second sealing member 180 can be arranged at a predetermined position by bonding, fastener connection, snap connection or other connection methods, and the embodiments of the present invention do not limit this.

[0077] Figures 15 - 19 Fig. shows the test fixture 100 according to another embodiment of the present invention. Referring to Figures 15 - 19 , compared with Figures 1 - 3 and Figures 13 - 14Compared with the test fixture 100 shown in [reference], the test fixture 100 of this embodiment is provided with a pushing block 140. The pushing block 140 and the movable pressing block 130 are respectively provided with corresponding commutation structures, which can convert the movement of the pushing block 140 in one direction into the movement of the movable pressing block 130 in another direction, so as to facilitate driving the movement of the movable pressing block 130 relative to the opening 191, and at the same time, the flexibility of the setting scenario of the test fixture 100 can be increased.

[0078] In some embodiments, the commutation structure may be corresponding inclined planes respectively provided on the movable pressing block 130 and the pushing block 140. The movable pressing block 130 has a first inclined plane 131, and the pushing block 140 has a second inclined plane 141 corresponding to the first inclined plane 131. The inclination directions and inclination angles of the first inclined plane 131 and the second inclined plane 141 may correspond. When the first inclined plane 131 and the second inclined plane 141 are in contact, when the pushing block 140 continues to move downward, the second inclined plane 141 presses the first inclined plane 131, and the pressing force of the second inclined plane 141 has a forward component force, so as to push the movable pressing block 130 to move forward and approach the opening 191. Refer to Figure 19 , when the pushing block 140 moves downward to the third station, the movable pressing block 130 moves to the second station, so as to be able to close the opening 191.

[0079] In some embodiments, the pushing block 140 is relatively fixed to the cover plate 120. For example, the pushing block 140 and the cover plate 120 may be directly connected or relatively fixed connection is achieved through a connecting member 124 (refer to Figure 15 and Figures 17 - 19 ). Thus, the cover plate 120 and the pushing block 140 can move synchronously. When the cover plate 120 moves downward, the pushing block 140 also moves downward synchronously to push the movable pressing block 130 to move forward, which can reduce the number of external forces required to operate the test fixture 100. Optionally, when the cover plate 120 moves to the first station simultaneously or afterwards, the pushing block 140 also moves to the third station, and the cavity 190 can be closed by applying an external force. At the same time, it can also ensure that the base 110 and the cover plate 120 have positioned the speaker unit 400 before the movable slider closes the opening 191, which is beneficial to ensuring the accuracy of the test result.

[0080] The embodiment of the present invention also relates to a sound listening test device, and the sound listening test device includes the test fixture 100 in at least some of the above embodiments of the present invention. By adopting the test fixture 100 of the embodiment of the present invention, the sound listening test of the speaker unit 400 can be conveniently carried out. When the test fixture 100 includes two sound outlets, the sound listening test device can be applied to the sound listening test of the double-sided speaker unit 400 with double-sided sound emission, which is beneficial to ensuring the accuracy of the test result and the convenience of the process of the sound listening test of the double-sided speaker unit 400.

[0081] Figures 20 - 24 The structural schematic diagram of the listening test device according to some embodiments of the present invention is shown. Refer to Figures 20 - 22 , the listening test device further includes a driving assembly 200, and the driving assembly 200 includes a driving device 210. The driving device 210 is used to drive the cover plate 120 to move up and down relative to the base 110, thereby improving the automation degree of the listening test. At the same time, by using the driving device 210 to drive the connection between the cover plate 120 and the base 110, it can better ensure the consistency of the pressure magnitude when the cover plate 120 is pressed against the base 110 during multiple tests, and reduce the error of the listening test caused by different pressures when the test fixture 100 is tightened. The output end of the driving device 210 can be fixedly connected to at least one of the cover plate 120, the connecting member 124 or the push block 140. For example, in this embodiment, the driving device 210 and the connecting member 124 are fixedly connected by screws.

[0082] The form of the driving device 210 can be arbitrarily selected according to needs. For example, it can include one or more of a hydraulic driving device 210, a pneumatic driving device 210, an electric driving device 210, a magnetic driving device 210 or other driving devices 210. In this embodiment, the driving device 210 is a cylinder, and the pressure magnitude when the test fixture 100 is tightened can be more accurately controlled. The driving assembly 200 can also include components such as a throttle valve to precisely control the action of the cylinder and ensure the consistency of the pressure when the test fixture 100 is molded.

[0083] The listening test device further includes a mounting table 300, and the base 110 is arranged on the mounting table 300 to facilitate the carrying out of the listening test. Refer to Figures 20 - 24 , the mounting table 300 includes a panel 310, and the panel 310 has a base mounting structure 313 for mounting the base 110. The base mounting structure 313 can be a mounting groove, a mounting table 300 or other structures suitable for mounting the base 110. Optionally, the base 110 and the panel 310 are connected in a detachable manner to facilitate the replacement of the base 110. Preferably, refer to Figure 23 , the panel 310 further has a base mounting guide pin 314, and the base 110 has a corresponding mounting guide hole, thereby facilitating the installation and positioning of the base 110.

[0084] The panel 310 further has an avoidance structure 311. When the base 110 is mounted on the base mounting structure 313, the first sound outlet 111 on the base 110 is exposed to the avoidance structure 311. By providing the avoidance structure 311, the shielding of the sound emitted from the first sounding surface 410 of the speaker unit 400 can be avoided. The avoidance structure 311 can be a hole, a groove or other structures that can achieve the avoidance effect. Refer to Figure 23, in one embodiment, the base mounting structure 313 is a mounting groove, and a hole penetrating in the up-down direction is provided in the middle of the mounting groove as the avoidance structure 311.

[0085] In some embodiments, the mounting table 300 further includes a bottom plate 320 and support columns 330. The bottom plate 320 is disposed below the panel 310 and spaced apart from the panel 310. The distance between the bottom plate 320 and the panel 310 can be selected according to specific test requirements. The support columns 330 are supported between the bottom plate 320 and the panel 310, and the support columns 330 are away from the avoidance structure 311. The support columns 330 can be a plurality of dispersedly arranged ones to ensure the stability of the support. By arranging the support columns 330 to lift the panel 310, obstacles outside the first sound outlet 111 can be reduced, and the blocking of sound can be avoided, thereby ensuring the accuracy of the sound listening test result.

[0086] In some embodiments, the panel 310 further has a notch 312, and the notch 312 extends outward from one side of the base mounting structure 313 to the edge of the panel 310. By providing the notch 312, the blocking of sound can be further reduced, ensuring that the sound field during the sound listening test of the speaker unit 400 is basically the same as the actual installation effect, and avoiding misjudgment.

[0087] The driving device 210 further includes a support frame 220. The support frame 220 is disposed on one side of the panel 310, and the driving device 210 is mounted on the support frame 220. The support frame 220 can mount the driving device 210 above the panel 310 to reduce the occlusion of the sound propagation emitted by the speaker unit 400. The support frame 220 has a hollow structure 221, and the penetration direction of the hollow structure 221 is opposite to that of the base 110, whereby the occlusion of the sound propagation emitted by the speaker unit 400 can be further reduced. For example, referring to Figures 20 - 22 , if the support frame 220 is disposed behind the panel 310, the penetration direction of the hollow structure 221 is the front-back direction.

[0088] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. For those skilled in the art, the present invention can have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A test fixture for the listening test of a speaker unit (400), wherein the speaker unit (400) has a first sounding surface (410) and a second sounding surface (420) arranged oppositely. Characterized in that, the test fixture (100) comprises: a base (110) having a first sound outlet (111) at its lower end; and a cover plate (120) arranged oppositely to the base (110) and capable of moving relative to the base (110), the cover plate (120) having a second sound outlet (121) at its upper end. When the cover plate (120) moves relative to the base (110) to the first working position, a cavity (190) capable of accommodating the speaker unit (400) is formed between the cover plate (120) and the base (110), and an opening (191) is provided at the rear side of the cavity (190); and a movable pressing block (130) at least partially arranged at the rear side of the opening (191) and capable of moving back and forth relative to the base (110). Wherein, the first sound outlet (111) corresponds to the first sounding surface (410), and the second sound outlet (121) corresponds to the second sounding surface (420). When the cover plate (120) is at the first working position and the movable pressing block (130) moves relative to the base (110) to the second working position, the movable pressing block (130) can close the opening (191).

2. The test fixture according to claim 1, Characterized in that, the movable pressing block (130) has a first inclined surface (131); the test fixture (100) further comprises: a pushing block (140) having a second inclined surface (141) corresponding to the first inclined surface (131); wherein, when the pushing block (140) moves downward, the second inclined surface (141) can push the first inclined surface (131), thereby driving the movable pressing block (130) to move towards the direction close to the opening (191). When the pushing block (140) moves downward to the third working position, the movable pressing block (130) moves to the second working position.

3. The test fixture according to claim 2, Characterized in that, the pushing block (140) is fixedly connected to the cover plate (120); simultaneously with or after the cover plate (120) moves to the first working position, the pushing block (140) moves to the third working position.

4. The test fixture according to claim 1 or 2, Characterized in that, the test fixture (100) further comprises: a reset device (150) configured to be able to drive the movable pressing block (130) to move away from the opening (191).

5. The test fixture according to claim 4, Characterized in that, the reset device (150) comprises a first connecting member (151) and a second connecting member (152), and the first connecting member (151) is elastically connected to the second connecting member (152). The first connecting member (151) is fixedly connected to the base (110), and the second connecting member (152) is fixedly connected to the movable pressing block (130).

6. The test fixture according to claim 1, wherein, the base (110) has a guiding groove (112) extending in the front-rear direction, and the movable pressing block (130) is disposed in the guiding groove (112) and can move along the guiding groove (112).

7. The test fixture according to claim 1, wherein, the test fixture (100) further includes: a conductive probe (160), connected to the movable pressing block (130); wherein, when the movable pressing block (130) moves to the second working position, the conductive probe (160) can be electrically connected to the speaker unit (400) in the cavity (190).

8. The test fixture according to claim 1, wherein, the test fixture (100) further includes: a first sealing member (170), disposed at the upper end of the base (110) and / or the lower end of the cover plate (120); and a second sealing member (180), disposed on at least one of the front end of the movable pressing block (130), the end face of the base (110) opposite to the movable pressing block (130), or the end face of the cover plate (120) opposite to the movable pressing block (130).

9. The test fixture according to claim 1, wherein, the cavity (190) is larger than the speaker unit (400), so that when the speaker unit (400) is positioned in the cavity (190), there is a gap between the speaker unit (400) and at least one side wall of the cavity (190).

10. The test fixture according to claim 9, wherein, the base (110) has a first positioning groove (113), the cover plate (120) has a second positioning groove (122) opposite to the first positioning groove (113), the first positioning groove (113) and the second positioning groove (122) are used to position the speaker unit (400), and there is a predetermined distance between the first positioning groove (113) and the second positioning groove (122) and at least one side wall of the cavity (190).

11. The test fixture according to claim 1, wherein, the base (110) has a first mold closing guiding structure (114), the cover plate (120) has a second mold closing guiding structure (123) corresponding to the first mold closing guiding structure (114), and the first mold closing guiding structure (114) cooperates with the second mold closing guiding structure (123) to guide the cover plate (120) to move relative to the base (110) to the first working position.

12. The test fixture according to claim 1, wherein, The base (110) has a third die - closing guiding structure (115), and the movable pressure block (130) has a fourth die - closing guiding structure (132) corresponding to the third die - closing guiding structure (115). The third die - closing guiding structure (115) and the fourth die - closing guiding structure (132) cooperate to guide the movable pressure block (130) to move relative to the base (110) to the second working position.

13. The test fixture according to claim 1, wherein, the size of the cross - section of the first sound outlet (111) perpendicular to the axis gradually increases from top to bottom, and the size of the cross - section of the second sound outlet (121) perpendicular to the axis gradually increases from bottom to top.

14. A sound - listening test device, wherein, it includes: a test fixture (100) according to any one of claims 1 - 13; and a driving assembly (200), including a driving device (210), and the driving device (210) is configured to drive the cover plate (120) to move up and down relative to the base (110).

15. The sound - listening test device according to claim 14, wherein, the sound - listening test device further includes a mounting table (300), and the mounting table (300) includes: a panel (310) having a base mounting structure (313) for mounting the base (110), and the panel (310) also has an avoidance structure (311); wherein, when the base (110) is connected to the base mounting structure (313), the first sound outlet (111) is exposed to the avoidance structure (311).

16. The sound - listening test device according to claim 15, wherein, the mounting table (300) further includes: a bottom plate (320) spaced below the panel (310); and support columns (330) supported between the panel (310) and the bottom plate (320), and the support columns (330) are away from the avoidance structure (311).

17. The sound - listening test device according to claim 15, wherein, the panel (310) further has: a notch (312) extending from one side of the base (110) mounting structure to the edge of the panel (310).

18. The sound - listening test device according to claim 15, wherein, the base (110) is detachably connected to the panel (310).

19. The sound - listening test device according to claim 15, wherein, the driving assembly (200) further includes: a support frame (220) provided on one side of the panel (310), and the support frame (220) has a hollow structure (221) whose penetration direction is opposite to the base (110); wherein, the driving device (210) is provided on the support frame (220).

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