Loudspeaker test equipment

Abstract

The utility model relates to the technical field of loudspeaker testing, and particularly discloses loudspeaker testing equipment, which comprises an equipment bracket; the sound collector is mounted at the lower part of the equipment bracket; a sliding module, comprising a sliding plate which is located above the sound collector and is connected with the equipment support in an up-down sliding mode, and a pressing rod which is installed on the sliding plate and is used for being matched with the sound collector to press a to-be-tested open loudspeaker when the sliding plate slides downwards. The probe assembly is installed on the sliding plate and is used for abutting against the open type loudspeaker to supply power when the sliding plate slides downwards; the hand driving assembly is installed on the upper portion of the equipment support, connected to the sliding plate and used for driving the sliding plate to slide up and down relative to the equipment support. The loudspeaker testing equipment provided by the utility model can effectively solve the problems that an open type loudspeaker is easily interfered by external foreign matters and the power supply stability is poor during testing.

Description

Technical Field

[0001] This utility model relates to the field of speaker testing technology, and in particular to a speaker testing device. Background Technology

[0002] The open-type loudspeaker includes a diaphragm support, a diaphragm mounted at the front end of the diaphragm support, and a magnetic circuit assembly mounted at the rear end of the diaphragm support. The magnetic circuit assembly has a positive conductive plate and a negative conductive plate on the side away from the diaphragm.

[0003] Before leaving the factory, open-back loudspeakers need to undergo functional testing. The specific functional testing process is as follows:

[0004] ① Place the open-face speaker on the sound acquisition unit with the diaphragm facing down;

[0005] ② The tester holds a positive power supply pen in one hand and a negative power supply pen in the other (both the positive and negative power supply pens are electrically connected to the tester). The positive power supply pen is placed against the positive conductive plate and the negative power supply pen is placed against the negative conductive plate. The tester can then drive the open speaker to emit sound downwards.

[0006] ③ The sound acquisition device (also known as "simulated ear") collects the sound emitted by the open-type speaker and then judges whether the sound output of the open-type speaker meets the requirements.

[0007] The following problems exist in the above process:

[0008] ① There is a gap between the open speaker and the sound collector. During the process of the diaphragm vibrating to produce sound, foreign objects such as dust from the outside can easily be sucked into the space between the open speaker and the sound collector through this gap. This will not only affect the accuracy of the test results, but may also damage the diaphragm.

[0009] ② Open-type speakers are prone to lateral displacement on the sound acquisition device, especially when the tester uses a power supply pen to push against the conductive plate, which can easily trigger the lateral displacement of the open-type speaker, resulting in unstable power supply and thus affecting the continuity and stability of the test.

[0010] Therefore, this utility model is dedicated to developing a speaker testing fixture to solve the problems of easy interference from external objects and poor power supply stability during open speaker testing.

[0011] The information disclosed in this background section is included only to enhance the understanding of the context of this disclosure, and therefore may contain information that does not constitute prior art known to those skilled in the art. Utility Model Content

[0012] One objective of this invention is to provide a speaker testing device that can effectively solve the problems of easy interference from external objects and poor power supply stability during open speaker testing.

[0013] To achieve the above objectives, this utility model provides a loudspeaker testing device, comprising:

[0014] Equipment bracket;

[0015] A sound acquisition device, which is installed at the lower part of the equipment bracket;

[0016] The sliding module includes a sliding plate located above the sound collector and slidably connected to the device bracket, a pressure rod mounted on the sliding plate and used to press the open-face speaker under test with the sound collector when the sliding plate slides downward, and a probe assembly mounted on the sliding plate and used to abut against the open-face speaker to supply power when the sliding plate slides downward.

[0017] A hand-driven assembly is mounted on the upper part of the equipment bracket and connected to the sliding plate, for driving the sliding plate to slide up and down relative to the equipment bracket.

[0018] Optionally, the equipment support includes a horizontal base plate and a vertical support fixed to the horizontal base plate;

[0019] The sound collector is mounted on the horizontal base plate, and the hand-driven assembly is mounted on the vertical bracket.

[0020] Optionally, the horizontal base plate is detachably connected to the sound acquisition device.

[0021] Optionally, the horizontal base plate and the sound collector are magnetically connected via a magnetic reed assembly.

[0022] Optionally, the magnetic reed assembly includes a vertically arranged buffer spring, an upper magnet fixed to the upper end of the buffer spring and magnetically connected to the bottom surface of the sound collector, and a lower magnet fixed to the lower end of the buffer spring and magnetically connected to the top surface of the horizontal base plate.

[0023] Optionally, the manual drive assembly includes:

[0024] A fixed guide rod is fixed to the horizontal base plate and slides through the sliding plate;

[0025] The movable guide rod has its lower end fixedly connected to the sliding plate and its middle part slidably connected to the vertical support.

[0026] A double-rotating hinge, wherein the lower end of the double-rotating hinge is hinged to the upper end of the movable guide rod;

[0027] The L-shaped handle has one end hinged to the vertical support and the middle position hinged to the upper end of the double-rotation hinge.

[0028] Optionally, the probe assembly includes a positive probe electrically connected to the positive terminal of the tester and a negative probe electrically connected to the negative terminal of the tester.

[0029] Optionally, both the positive and negative probes are spring probes.

[0030] The beneficial effect of this utility model is that it provides a speaker testing device:

[0031] On the one hand, the design of the pressure bar tightly presses the diaphragm of the speaker against the sound acquisition device during testing, reducing or even eliminating the gap between the two. This not only effectively prevents the entry of foreign objects such as dust, ensuring the cleanliness of the testing environment and avoiding the risk of diaphragm damage, but also prevents the open speaker from shifting laterally during testing.

[0032] On the other hand, the design combines a probe assembly with a sliding plate. The probe assembly automatically contacts the conductive plate of the speaker under the action of the sliding plate, requiring no manual intervention. This automated contact method avoids the instability caused by manual operation. Furthermore, combined with the clamping and anti-lateral displacement gauge of the pressure rod, it ensures the stability of the power supply and the continuity of the test.

[0033] Therefore, the speaker testing equipment provided by this utility model can effectively solve the problems of easy interference from external objects and poor power supply stability during open speaker testing. Attached Figure Description

[0034] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0035] Figure 1 This is a schematic diagram of the horn testing device provided in the embodiment.

[0036] In the picture:

[0037] 100, Open-type speaker; 100a, Positive conductive plate; 100b, Negative conductive plate;

[0038] 1. Equipment support frame; 101. Horizontal base plate; 102. Vertical support frame;

[0039] 2. Sound recording device;

[0040] 3. Sliding module; 301. Sliding plate; 302. Pressure rod; 303. Positive electrode probe; 304. Negative electrode probe;

[0041] 4. Hand drive assembly; 401. Fixed guide rod; 402. Movable guide rod; 403. Double-rotor hinge; 404. L-shaped handle;

[0042] 5. Magnetic reed assembly. Detailed Implementation

[0043] In this utility model, the reference to "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment can be included in at least one embodiment of this utility model. The term "embodiment" appearing in various places in the specification does not necessarily refer to the same embodiment, nor does it specifically limit its independence or connection with other embodiments. In principle, in this utility model, as long as there is no technical contradiction or conflict, the technical features mentioned in each embodiment can be combined in any way to form a corresponding implementable technical solution.

[0044] Unless otherwise defined, the technical terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains; the use of related terms herein is merely for the purpose of describing particular embodiments and is not intended to limit the invention.

[0045] In the description of this utility model, the term "and / or" is used to describe the logical relationship between objects, indicating that three relationships can exist. For example, A and / or B means: A exists, B exists, and A and B exist simultaneously. Additionally, the character " / " generally indicates that the preceding and following objects have an "or" logical relationship.

[0046] In this invention, terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any actual quantity, hierarchy, or order between these entities or operations.

[0047] Without further limitations, the use of terms such as “comprising,” “including,” “having,” or other similar expressions in this invention is intended to cover non-exclusive inclusion, which does not exclude the presence of additional elements in a process, method, or product that includes the stated elements, such that a process, method, or product that includes a series of elements may include not only those defined elements but also other elements not expressly listed, or elements inherent to such a process, method, or product.

[0048] Similar to the understanding in the Examination Guidelines, in this utility model, expressions such as "greater than," "less than," and "exceeding" are understood to exclude the stated number; expressions such as "above," "below," and "within" are understood to include the stated number. Furthermore, in the description of the embodiments of this utility model, "multiple" means two or more (including two), and similar expressions related to "multiple" are also understood in this way, such as "multiple groups" and "multiple times," unless otherwise explicitly specified.

[0049] In the description of the embodiments of this utility model, the space-related expressions used, such as "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "vertical," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," indicate the orientation or positional relationship based on the orientation or positional relationship shown in the specific embodiments or drawings. They are only for the convenience of describing the specific embodiments of this utility model or for the reader's understanding, and do not indicate or imply that the device or component referred to must have a specific position, a specific orientation, or be constructed or operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this utility model.

[0050] Unless otherwise expressly specified or limited, the terms "installation," "connection," "linking," "fixing," and "setting," as used in the description of the embodiments of this utility model, should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral setting; it can be a mechanical connection, an electrical connection, or a communication connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two components or the interaction between two components. For those skilled in the art to which this utility model pertains, the specific meaning of the above terms in the embodiments of this utility model can be understood according to the specific circumstances.

[0051] See Figure 1 This utility model provides a loudspeaker testing device, including a device bracket 1, a sound acquisition unit 2, a sliding module 3, and a hand-driven assembly 4.

[0052] The sound acquisition unit 2 is mounted on the lower part of the device bracket 1. The sliding module 3 includes a sliding plate 301 located above the sound acquisition unit 2 and slidably connected to the device bracket 1; a pressure rod 302 mounted on the sliding plate 301 and used to cooperate with the sound acquisition unit 2 to press the open-face speaker 100 under test when the sliding plate 301 slides downward; and a probe assembly mounted on the sliding plate 301 and used to abut against the open-face speaker 100 to supply power when the sliding plate 301 slides downward. The hand-driven assembly 4 is mounted on the upper part of the device bracket 1 and connected to the sliding plate 301, and is used to drive the sliding plate 301 to slide up and down relative to the device bracket 1.

[0053] The probe assembly includes a positive probe 303 electrically connected to the positive terminal of the tester and a negative probe 304 electrically connected to the negative terminal of the tester.

[0054] The working process of the speaker testing equipment provided in this embodiment is as follows:

[0055] S10: Place the speaker to be tested

[0056] The open-face speaker 100 to be tested is placed on the sound acquisition unit 2 (simulated ear) with the diaphragm facing down. The sound acquisition unit 2 is located at the lower part of the equipment bracket 1 and is used to acquire the sound signal emitted by the speaker.

[0057] S20: Drive sliding module 3

[0058] Operate the manual drive assembly 4 to drive the sliding plate 301 to slide downward along the equipment bracket 1.

[0059] A pressure rod 302 and a probe assembly are mounted on the sliding plate 301. When the sliding plate 301 moves downward, the pressure rod 302 gradually approaches the open horn 100 to be tested.

[0060] S30: Press the horn down

[0061] The pressure rod 302 moves downward under the action of the sliding plate 301, finally pressing the open-type speaker 100 under test, making the open-type speaker 100 in close contact with the sound acquisition unit 2. This pressing state reduces or even eliminates the gap between the speaker and the sound acquisition unit 2, preventing foreign objects such as dust from entering, while ensuring that the speaker does not shift laterally during the test.

[0062] S40: Power Supply and Testing

[0063] The probe assembly is mounted on the sliding plate 301. As the sliding plate 301 descends, the positive probe 303 and the negative probe 304 in the probe assembly come into contact with the positive conductive plate 100a and the negative conductive plate 100b of the open horn 100, respectively, to achieve power supply.

[0064] After power is supplied, the tester drives the open-type speaker 100 to produce sound. The sound acquisition unit 2 collects the sound signal emitted by the speaker and transmits the data to the tester for analysis to determine whether the speaker's sound performance meets the requirements.

[0065] S50: Test Completed

[0066] After the test is completed, the manual drive assembly 4 moves the sliding plate 301 upward, causing the pressure rod 302 and the probe assembly to move away from the horn. At this point, the tester can remove the horn, completing the test process.

[0067] The speaker testing device provided by this utility model, on the one hand, through the design of the pressure rod 302, tightly presses the diaphragm of the speaker and the sound collector 2 together during the test, reducing or even eliminating the gap between the two. This not only effectively prevents the entry of foreign objects such as dust, ensuring the cleanliness of the test environment and avoiding the risk of diaphragm damage, but also prevents the open speaker 100 from shifting laterally during the test.

[0068] On the other hand, the design combines the probe assembly with the sliding plate 301. Under the action of the sliding plate 301, the probe assembly automatically contacts the conductive sheet of the speaker without manual intervention. This automated contact method avoids the instability caused by manual operation. Furthermore, combined with the clamping and anti-lateral displacement gauge of the pressure rod 302, it ensures the stability of power supply and the continuity of testing.

[0069] Therefore, the speaker testing equipment provided by this utility model can effectively solve the problems of easy interference from external objects and poor power supply stability when testing open speakers 100.

[0070] It should be noted that the specific structure and working principle of the tester and the sound acquisition device 2 are existing technologies and are not the focus of this utility model, so they will not be described in detail.

[0071] In this embodiment, the equipment support 1 includes a horizontal base plate 101 and a vertical support 102 fixed on the horizontal base plate 101;

[0072] The sound collector 2 is mounted on the horizontal base plate 101, and the hand-driven assembly 4 is mounted on the vertical bracket 102.

[0073] Optionally, the horizontal base plate 101 is detachably connected to the sound acquisition unit 2. This detachable design allows for the replacement of the sound acquisition unit 2 with different shapes and sizes to accommodate different specifications of open-type speakers 100, while other components can be reused, thereby reducing testing costs.

[0074] In this embodiment, the horizontal base plate 101 and the sound collector 2 are magnetically connected via a magnetic reed assembly 5. Specifically, the magnetic reed assembly 5 includes a vertically arranged buffer spring, an upper magnet fixed to the upper end of the buffer spring and magnetically connected to the bottom surface of the sound collector 2, and a lower magnet fixed to the lower end of the buffer spring and magnetically connected to the top surface of the horizontal base plate 101.

[0075] The magnetic connection facilitates assembly and disassembly, and the buffer spring in the middle can be compressed and deformed when the pressure rod 302 presses down on the open speaker 100, so as to prevent the pressure of the pressure rod 302 from being too great and damaging the open speaker 100 or the sound acquisition device 2.

[0076] In this embodiment, the hand-drive assembly 4 includes a fixed guide rod 401, a movable guide rod 402, a double-rotating hinge 403, and an L-shaped handle 404.

[0077] The fixed guide rod 401 is fixed on the horizontal base plate 101 and slides through the sliding plate 301; the lower end of the movable guide rod 402 is fixed to the sliding plate 301, and the middle part is slidably connected to the vertical support 102; the lower end of the double-rotary hinge 403 is hinged to the upper end of the movable guide rod 402; one end of the L-shaped handle 404 is hinged to the vertical support 102, and the middle part is hinged to the upper end of the double-rotary hinge 403.

[0078] Turning the L-shaped handle 404 upwards will drive the sliding plate 301 to move the pressure rod 302 and the probe assembly upwards, thereby releasing the open horn 100; conversely, turning the L-shaped handle 404 downwards will drive the sliding plate 301 to move the pressure rod 302 and the probe assembly downwards, thereby pressing the open horn 100.

[0079] Optionally, both the positive electrode probe 303 and the negative electrode probe 304 are spring probes. The spring probes can undergo a certain amount of compression and buffer deformation when they contact the corresponding conductive sheets downwards, so as to avoid damaging the positive electrode conductive sheet 100a and the negative electrode conductive sheet 100b.

[0080] In summary, the speaker testing equipment provided in this embodiment has the following advantages:

[0081] ① Prevent interference from dust and other foreign objects

[0082] The design of the pressure bar 302 tightly presses the speaker diaphragm against the sound acquisition unit 2 during testing, reducing or even eliminating the gap between them. This design effectively prevents the entry of dust and other foreign objects, ensuring a clean testing environment while avoiding the risk of diaphragm damage.

[0083] ② Prevent the speaker from shifting laterally and improve power supply stability

[0084] The design combines a probe assembly with a sliding plate 301. The probe assembly automatically contacts the conductive plate of the speaker under the action of the sliding plate 301, requiring no manual intervention. This automated contact method avoids the instability caused by manual operation, ensuring the stability of power supply and the continuity of testing.

[0085] The clamping design of the pressure rod 302 not only ensures the seal between the speaker and the sound acquisition unit 2, but also prevents the speaker from shifting laterally during the test, further improving the stability and accuracy of the test.

[0086] ③ Magnetic connection, easy to install and remove

[0087] The sound acquisition unit 2 is connected to the horizontal base plate 101 via a magnetic spring assembly 5. The magnetic design facilitates quick assembly and disassembly, while the buffer spring provides additional protection to prevent damage to the speaker or sound acquisition unit 2 during the clamping process.

[0088] Finally, it should be noted that although the above embodiments have been described in the text and drawings of this application, this should not limit the scope of patent protection of this application. Any technical solutions that are based on the essential concept of this application and utilize the content described in the text and drawings of this application, resulting in equivalent structural or procedural substitutions or modifications, as well as the direct or indirect application of the technical solutions of the above embodiments to other related technical fields, are all included within the scope of patent protection of this application.

Claims

1. A loudspeaker testing device, characterized in that, include: Equipment bracket (1); A sound collector (2) is installed on the lower part of the device bracket (1); The sliding module (3) includes a sliding plate (301) located above the sound collector (2) and slidably connected to the device bracket (1) in the upper and lower directions; a pressure rod (302) mounted on the sliding plate (301) and used to cooperate with the sound collector (2) to press the open speaker (100) under test when the sliding plate (301) slides down; and a probe assembly mounted on the sliding plate (301) and used to abut against the open speaker (100) to supply power when the sliding plate (301) slides down. A hand-drive assembly (4) is installed on the upper part of the equipment bracket (1) and connected to the sliding plate (301) for driving the sliding plate (301) to slide up and down relative to the equipment bracket (1).

2. The horn testing device according to claim 1, characterized in that, The equipment support (1) includes a horizontal base plate (101) and a vertical support (102) fixed on the horizontal base plate (101). The sound collector (2) is mounted on the horizontal base plate (101), and the hand-driven assembly (4) is mounted on the vertical bracket (102).

3. The horn testing device according to claim 2, characterized in that, The horizontal base plate (101) is detachably connected to the sound collector (2).

4. The horn testing device according to claim 3, characterized in that, The horizontal base plate (101) and the sound collector (2) are magnetically connected by a magnetic reed assembly (5).

5. The horn testing device according to claim 4, characterized in that, The magnetic reed assembly (5) includes a vertically arranged buffer spring, an upper magnet fixed to the upper end of the buffer spring and magnetically connected to the bottom surface of the sound collector (2), and a lower magnet fixed to the lower end of the buffer spring and magnetically connected to the top surface of the horizontal base plate (101).

6. The horn testing device according to claim 2, characterized in that, The manual drive assembly (4) includes: A fixed guide rod (401) is fixed on the horizontal base plate (101) and slides through the sliding plate (301). The movable guide rod (402) is fixed at its lower end to the sliding plate (301) and slidably connected to the vertical bracket (102) in the middle. A double-rotating hinge (403), the lower end of which is hinged to the upper end of the movable guide rod (402); L-shaped handle (404), one end of which is hinged to the vertical bracket (102), and the middle position is hinged to the upper end of the double-rotating hinge (403).

7. The horn testing device according to claim 1, characterized in that, The probe assembly includes a positive probe (303) electrically connected to the positive terminal of the tester and a negative probe (304) electrically connected to the negative terminal of the tester.

8. The horn testing device according to claim 7, characterized in that, Both the positive electrode probe (303) and the negative electrode probe (304) are spring probes.

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