Miniature loudspeaker resonance test tool

Abstract

The utility model discloses a miniature loudspeaker resonance test tool, comprising a miniature loudspeaker body and a pedestal, one side of the bottom surface of the loudspeaker body is provided with a contact, the center of the top surface of the pedestal is provided with a first circular opening, the center of the bottom surface of the pedestal is provided with a second circular opening, the inner side of the pedestal is provided with a test clamp, and the test clamp is provided with a second circular opening. The utility model relates to the technical field of loudspeaker testing devices, in particular to a miniature loudspeaker body resonance testing device, which aims to solve the problem that after a loudspeaker is fixed manually, the efficiency of listening test on the loudspeaker through a listening pen is low. The technical effects are that the miniature loudspeaker body is clamped through the test clamp, and resonance test can be conveniently carried out on the miniature loudspeaker body.

Description

Technical Field

[0001] The utility model relates to the technical field of loudspeaker testing devices, in particular to a micro loudspeaker resonance testing tool. Background Art

[0002] Micro speaker resonance test refers to the frequency response test of the micro speaker to determine its parameters such as resonant frequency and damping factor to evaluate the performance and sound quality of the speaker, and provide an important reference for the design and optimization of the speaker. The resonant frequency of the micro speaker refers to the inherent vibration frequency of the speaker. If the resonant frequency is too high or too low, it will lead to insufficient response, distortion and other problems of the speaker, affecting the sound quality. The resonance test can determine the resonant frequency of the speaker in order to select the appropriate operating frequency and components such as filters to optimize the sound quality. The damping factor refers to the speed at which the vibration of the speaker decays in the resonant state. If the damping is insufficient, the vibration of the speaker will continue for a long time, resulting in distortion of the sound quality. The resonance test can measure the damping factor of the speaker to determine whether the damping is sufficient and adjust it as needed. At high volume, nonlinear distortion may affect the sound quality of the micro speaker. The resonance test can detect the nonlinear distortion of the speaker and take corresponding measures to optimize it.

[0003] The existing resonance test of micro speakers is mostly done by manually fixing the speakers and then performing a listening test on the speakers with a listening pen to achieve the effect of detecting resonant products. However, this method is relatively cumbersome and manual testing is inefficient.

[0004] In view of this, we propose a micro speaker resonance test fixture. Utility Model Content

[0005] Therefore, the purpose of the present invention is to provide a micro speaker resonance test tool to solve the above problems in the prior art.

[0006] In order to solve the above technical problems, according to one aspect of the present invention, the present invention provides the following technical solutions:

[0007] According to the first aspect of the utility model, it includes a micro-speaker body and a base, wherein a contact is provided on one side of the bottom surface of the micro-speaker body, a circular opening 1 is provided at the center of the top surface of the base, a circular opening 2 is provided at the center of the bottom surface of the base, and a test fixture is provided on the inner side of the base, wherein the test fixture can clamp the micro-speaker body and perform a resonance test on the micro-speaker body.

[0008] Furthermore, the test fixture comprises a hydraulic cylinder, a groove is formed on one side of the top surface of the base, the hydraulic cylinder is fixedly installed in the groove on one side of the top surface of the base, and a connecting rod is fixedly installed on the output end of the hydraulic cylinder.

[0009] Furthermore, a bracket is fixedly mounted on one end of the connecting rod, the bracket is in an L-shaped structure, an artificial ear is fixedly mounted on the inner wall of one end of the bracket away from the connecting rod, and the artificial ear can be connected to the resonance test equipment through a signal line.

[0010] Furthermore, arms are fixedly mounted on both sides of the outer wall of one end of the bracket close to the artificial ear, and a top rod is fixedly mounted on the inner wall of one end of the bracket away from the artificial ear.

[0011] Furthermore, the test fixture also includes a circular plate, a card block is fixedly mounted on the top surface of the circular plate, the card block is in a C-shaped structure, and the card block can be inserted and connected to the bottom of the micro speaker body.

[0012] Furthermore, a circular hole is opened on one side of the top surface of the circular plate, and the circular hole penetrates the top surface of the circular plate and extends to one side of the bottom surface of the circular plate. A second top rod is fixedly installed at the center of the bottom surface of the circular plate.

[0013] Furthermore, a limiting plate is fixedly mounted on one end of the second push rod away from the circular plate, the surface of the limiting plate is slidably connected to the inner wall of the second circular opening, and a spring is sleeved on the surface of the second push rod.

[0014] Furthermore, a connecting plate is provided on one side of the bottom surface of the circular opening one, and the connecting plate passes through the inner wall of the circular opening one and extends to one side of the outer wall of the base. A copper tube is fixedly installed on one side of the top surface of the connecting plate, and the copper tube is electrically connected to the sound source through the other end of the connecting plate.

[0015] The utility model has the following advantages: the utility model can clamp the micro-speaker body through the test fixture, which is convenient for performing resonance test on the micro-speaker body. After the micro-speaker body is placed on the top of the circular plate, the bottom surface of the micro-speaker body is inserted and connected with the card block, and the hydraulic cylinder drives the push rod to press down, so that the contact on the bottom surface of the micro-speaker body is connected with the copper tube. After the micro-speaker body is sounded by the sound source, the sound data is transmitted to the resonance test equipment through the artificial ear. Compared with the traditional manual detection through the listening pen, the test efficiency of the utility model is higher. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a front and side stereogram of a micro speaker resonance test tooling of the utility model;

[0017] Figure 2 This is a back-side stereoscopic diagram of a micro-speaker resonance test tooling of the utility model;

[0018] Figure 3 A schematic diagram of a micro-speaker body of a micro-speaker resonance test tooling of the utility model;

[0019] Figure 4 It is a top side stereogram of a test fixture structure of a micro speaker resonance test tooling of the utility model;

[0020] Figure 5 The utility model is a bottom stereoscopic view of a test fixture structure of a micro-speaker resonance test tooling.

[0021] In the figure: 11, micro speaker body, 111, contact, 12, base, 121, circular opening one, 122, circular opening two, 13, hydraulic cylinder, 14, connecting rod, 15, bracket, 16, artificial ear, 17, support arm, 171, push rod one, 21, round plate, 211, block, 212, round hole, 22, push rod two, 221, limit plate, 23, spring, 24, connecting plate, 241, copper tube. DETAILED DESCRIPTION

[0022] The following is a specific embodiment of the present invention. People familiar with the technology can easily understand the other advantages and functions of the present invention from the contents disclosed in this specification. Obviously, the described embodiment is a part of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] Example 1

[0024] like Figure 1-Figure 3 As shown, a micro-speaker resonance test tool in an embodiment of the first aspect of the utility model comprises a micro-speaker body 11 and a base 12, a contact 111 is provided on one side of the bottom surface of the micro-speaker body 11, a circular opening 121 is provided at the center of the top surface of the base 12, a circular opening 2 122 is provided at the center of the bottom surface of the base 12, a test fixture is provided on the inner side of the base 12, and the test fixture can clamp the micro-speaker body 11 and perform a resonance test on the micro-speaker body 11;

[0025] In the above embodiment, it should be noted that the inner diameter of the circular opening 121 is consistent with the diameter of the micro-speaker body 11, so that the micro-speaker body 11 can slide on the inner wall of the circular opening 121, and the test fixture can clamp the micro-speaker body 11 and perform a resonance test on the micro-speaker body 11.

[0026] Example 2

[0027] like Figure 4-Figure 5As shown, a micro-speaker resonance test fixture in the embodiment of the first aspect of the utility model includes all the contents of embodiment 1. In addition, the test fixture also includes a circular plate 21, and a card block 211 is fixedly installed on the top surface of the circular plate 21. The card block 211 has a C-shaped structure. The card block 211 can be inserted and connected to the bottom of the micro-speaker body 11. A circular hole 212 is opened on one side of the top surface of the circular plate 21. The circular hole 212 passes through the top surface of the circular plate 21 and extends to one side of the bottom surface of the circular plate 21. The center of the bottom surface of the circular plate 21 is fixed A second push rod 22 is installed, and a limit plate 221 is fixedly installed on one end of the second push rod 22 away from the circular plate 21. The surface of the limit plate 211 is slidably connected to the inner wall of the second circular opening 122. A spring 23 is sleeved on the surface of the second push rod 22. A connecting plate 24 is provided on one side of the bottom surface of the first circular opening 211. The connecting plate 24 penetrates the inner wall of the first circular opening 211 and extends to one side of the outer wall of the base 12. A copper tube 241 is fixedly installed on one side of the top surface of the connecting plate 24. The copper tube 241 is electrically connected to the sound source through the other end of the connecting plate 24.

[0028] In the above embodiment, it should be noted that after the bottom surface of the micro-speaker body 11 is inserted and connected with the card block 211, the contact 111 on the bottom surface of the micro-speaker body 11 corresponds to the position of the circular hole 212. After the micro-speaker body 11 is pressed down, it can slide downward through the top rod 22, so that the top end of the copper tube 241 contacts the contact 111 on the bottom surface of the micro-speaker body 11, and then the micro-speaker body 11 plays sound through the sound source, and the sound source is the existing technology.

[0029] Example 3

[0030] like Figure 4-Figure 5 As shown, a micro-speaker resonance test fixture in an embodiment of the first aspect of the utility model includes all the contents of Example 2, and in addition, the test fixture includes a hydraulic cylinder 13, a groove is provided on one side of the top surface of the base 12, and the hydraulic cylinder 13 is fixedly installed in the groove on one side of the top surface of the base 12, a connecting rod 14 is fixedly installed on the output end of the hydraulic cylinder 13, and a bracket 15 is fixedly installed on one end of the connecting rod 14, and the bracket 15 is in an L-shaped structure, and an artificial ear 16 is fixedly installed on the inner wall of the end of the bracket 15 away from the connecting rod 14, and the artificial ear 16 can be connected to the resonance test equipment through a signal line, and support arms 17 are fixedly installed on both sides of the outer wall of the end of the bracket 15 close to the artificial ear 16, and a top rod 171 is fixedly installed on the inner wall of the end of the support arm 17 away from the artificial ear 16;

[0031] In the above embodiment, it should be noted that the hydraulic cylinder 13 can drive the artificial ear 16 and the top rod 171 on the top to slide up and down. When the artificial ear 16 and the top rod 171 slide downward, the top rod 171 first contacts the top surface of the micro-speaker body 11, so that the micro-speaker body 11 can slide downward and contact the top of the copper tube 241. When the micro-speaker body 11 plays a sound, the sound can be collected by the artificial ear 16 and transmitted to the resonance test equipment. The resonance test equipment is a prior art, and the model of the artificial ear 16 is IEC 60318-4.

[0032] The use process of the utility model is as follows: a person skilled in the art will insert and connect the bottom surface of the micro-speaker body 11 with the card block 211, and the hydraulic cylinder 13 can drive the artificial ear 16 and the top rod 171 on the top to slide up and down. When the artificial ear 16 and the top rod 171 slide downward, the top rod 171 first contacts the top surface of the micro-speaker body 11, so that the micro-speaker body 11 can slide downward, so that the top end of the copper tube 241 contacts the contact point 111 on the bottom surface of the micro-speaker body 11, and then the micro-speaker body 11 plays the sound through the sound source. After the micro-speaker body 11 plays the sound, the sound can be collected through the artificial ear 16 and transmitted to the resonance test equipment.

[0033] Although the utility model has been described in detail above with general descriptions and specific embodiments, it is obvious to those skilled in the art that some modifications or improvements can be made to the utility model. Therefore, these modifications or improvements made without departing from the spirit of the utility model are within the scope of protection claimed by the utility model.

Claims

1. A micro-speaker resonance test tool, comprising a micro-speaker body (11) and a base (12), wherein a contact point (111) is provided on one side of the bottom surface of the micro-speaker body (11), a circular opening 1 (121) is provided at the center of the top surface of the base (12), and a circular opening 2 (122) is provided at the center of the bottom surface of the base (12), characterized in that: A test fixture is provided on the inner side of the base (12), and the test fixture can clamp the micro-speaker body (11) and perform a resonance test on the micro-speaker body (11).

2. A micro speaker resonance test fixture according to claim 1, characterized in that: The test fixture comprises a hydraulic cylinder (13); a groove is provided on one side of the top surface of the base (12); the hydraulic cylinder (13) is fixedly mounted in the groove on one side of the top surface of the base (12); and a connecting rod (14) is fixedly mounted on the output end of the hydraulic cylinder (13).

3. A micro speaker resonance test fixture according to claim 2, characterized in that: A bracket (15) is fixedly mounted on one end of the connecting rod (14), the bracket (15) being in an L-shaped structure, an artificial ear (16) is fixedly mounted on the inner wall of one end of the bracket (15) away from the connecting rod (14), and the artificial ear (16) can be connected to a resonance test device via a signal line.

4. A micro speaker resonance test fixture according to claim 3, characterized in that: Support arms (17) are fixedly mounted on both sides of the outer wall of one end of the support (15) close to the artificial ear (16), and a top rod (171) is fixedly mounted on the inner wall of one end of the support arm (17) away from the artificial ear (16).

5. A micro speaker resonance test fixture according to claim 4, characterized in that: The test fixture further comprises a circular plate (21), a card block (211) being fixedly mounted on the top surface of the circular plate (21), the card block (211) being in a C-shaped structure, and the card block (211) being capable of being inserted and connected to the bottom of the micro-speaker body (11).

6. A micro speaker resonance test fixture according to claim 5, characterized in that: A circular hole (212) is provided on one side of the top surface of the circular plate (21), and the circular hole (212) penetrates the top surface of the circular plate (21) and extends to one side of the bottom surface of the circular plate (21). A second top rod (22) is fixedly mounted at the center of the bottom surface of the circular plate (21).

7. A micro speaker resonance test fixture according to claim 6, characterized in that: A limiting plate (221) is fixedly mounted on one end of the second push rod (22) away from the circular plate (21); the surface of the limiting plate (221) is slidably connected to the inner wall of the second circular opening (122); and a spring (23) is sleeved on the surface of the second push rod (22).

8. The micro speaker resonance test fixture according to claim 7, characterized in that: A connecting plate (24) is provided on one side of the bottom surface of the circular opening one (121); the connecting plate (24) penetrates the inner wall of the circular opening one (121) and extends to one side of the outer wall of the base (12); a copper tube (241) is fixedly mounted on one side of the top surface of the connecting plate (24); the copper tube (241) is electrically connected to the sound source through the other end of the connecting plate (24).

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