Test device

Abstract

The utility model discloses a test device, which is used for testing an acoustic product and is characterized by comprising a workbench; the positioning piece is connected to the workbench and is provided with a supporting surface; the driving device comprises a fixed seat and a movable end which are connected, the fixed seat is connected to the workbench, and the movable end is driven to move in the first direction; the movable assembly is connected to the movable end, and at least one part of the movable assembly corresponds to the supporting face in the first direction; the detection element is connected to the side, facing the supporting face, of the movable assembly and corresponds to the supporting face in the first direction; the first abutting piece is connected to the workbench and corresponds to the movable assembly in the first direction. The movable assembly moves along with the movable end and drives the detection element to move in the first direction until the movable assembly abuts against the first abutting piece. The testing equipment can apply stable pressure to the loudspeaker of the acoustic product, ensures the contact stability of the detection element and the loudspeaker, and improves the testing efficiency and the yield of the product.

Description

Technical Field

[0001] The utility model relates to the technical field of acoustic testing, and particularly relates to a testing device. Background Art

[0002] Before the acoustic product is assembled, it is often necessary to detect the speaker of the product to check the qualification of the product. In the related art, the detection element is manually held to contact the speaker of the acoustic product for inspection. During the detection process, the tester needs to apply a certain pressure to the speaker to avoid poor contact between the detection element and the speaker. However, the contact points of some speakers cannot withstand a large force. Therefore, during the manual testing process, there will be a phenomenon that the applied force is too large, resulting in defective products, but if the applied force is too small, there will be poor contact and the need for repeated detection, thus reducing the testing efficiency and the yield rate of the products. Summary of the Utility Model

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. For this purpose, the utility model provides a testing device, which can apply a stable pressure to the speaker of the acoustic product, ensure the contact stability between the detection element and the speaker, and improve the testing efficiency and the yield rate of the products.

[0004] The testing device according to the first aspect embodiment of the utility model is used for testing acoustic products, and includes:

[0005] A workbench;

[0006] A positioning member, connected to the workbench and having a supporting surface;

[0007] A driving device, including a fixed seat and a movable end connected to each other, the fixed seat is connected to the workbench, and the movable end is driven to move along a first direction;

[0008] A movable assembly, connected to the movable end, and at least a part of the movable assembly corresponds to the supporting surface along the first direction;

[0009] A detection element, connected to the side of the movable assembly facing the supporting surface and corresponding to the supporting surface along the first direction; and

[0010] A first abutting member, connected to the workbench and corresponding to the movable assembly along the first direction;

[0011] Wherein, the movable assembly moves along with the movable end and drives the detection element to move along the first direction until the movable assembly abuts against the first abutting member.

[0012] The testing device according to the embodiment of the present utility model has at least the following beneficial effects: The driving device drives the moving component to move, thereby driving the detecting element to move towards the supporting surface. When the moving component abuts against the first abutting member, the driving device stops working, so that the contact position between the detecting element and the acoustic product is the same each time, ensuring the contact stability between the detecting element and the acoustic product.

[0013] According to some embodiments of the present utility model, the workbench includes a base body, a fixing plate and a guide post. The base body and the fixing plate are arranged at intervals along the first direction. Two ends of the guide post are respectively connected to the fixing plate and the base body, and the fixing seat is connected to the fixing plate.

[0014] According to some embodiments of the present utility model, it further includes a movable shaft. The movable shaft is movably connected to the guide post. The moving component is provided with a through hole, and the movable shaft and the guide post are inserted through the through hole. The movable shaft moves along the first direction following the moving component.

[0015] According to some embodiments of the present utility model, it further includes a second abutting member. The second abutting member is connected to the fixing plate. One end of the second abutting member is arranged between the fixing plate and the moving component, and has a first distance from the side of the fixing plate facing the moving component. One end of the movable shaft facing the fixing plate has a second distance from the side of the moving component facing the fixing plate. The first distance is not less than the second distance.

[0016] According to some embodiments of the present utility model, the moving component includes a moving part and a connecting part. The moving part is connected to the moving end. The connecting part has a first end and a second end. The first end is movably connected to the moving part, and the second end corresponds to the supporting surface along the first direction and is connected to the detecting element.

[0017] According to some embodiments of the present utility model, the moving part is provided with a first connecting hole, and the first end is provided with a first counterbore. The length of the first counterbore along the second direction is greater than the aperture of the first connecting hole, so that the first end can move relative to the moving part along the second direction; the second direction is perpendicular to the first direction.

[0018] According to some embodiments of the present utility model, the connecting part has a fixing hole. The fixing hole is arranged at the second end and penetrates through the connecting part. The testing device further includes a fixing member. The fixing member is inserted through the fixing hole, and the detecting element is connected to the fixing member; the fixing member is made of an insulating material.

[0019] According to some embodiments of the present utility model, the first abutting member includes a fixed portion and an adjusting portion connected to each other. The fixed portion is connected to the workbench, and the adjusting portion is movable relative to the fixed portion along a first direction.

[0020] According to some embodiments of the present utility model, it further includes a receiver. The receiver is connected to the supporting surface and is disposed opposite to the detecting element. A positioning hole is provided on a side of the receiver facing the detecting element, and the positioning hole is used for fixing the acoustic product.

[0021] According to some embodiments of the present utility model, the workbench is provided with a second connection hole, and the positioning member is provided with a second counterbore. The length of the second counterbore along a third direction is greater than the aperture of the second connection hole, so that the positioning member can move relative to the workbench along the third direction; the third direction is perpendicular to the first direction.

[0022] Additional aspects and advantages of the present utility model will be given in part in the following description, become apparent in part from the following description, or be understood through the practice of the present utility model. Description of the Drawings

[0023] The following further describes the present utility model in conjunction with the drawings and embodiments, where:

[0024] Figure 1 is a schematic diagram of the testing device in the embodiment of the present utility model;

[0025] Figure 2 is a side view schematic diagram of the testing device in the embodiment of the present utility model;

[0026] Figure 3 is a front view schematic diagram of the testing device in the embodiment of the present utility model;

[0027] Figure 4 is a sectional view schematic diagram of the testing device in the embodiment of the present utility model;

[0028] Figure 5 is a schematic diagram of the workbench in the embodiment of the present utility model;

[0029] Figure 6 is a schematic diagram of the movable assembly in the embodiment of the present utility model;

[0030] Figure 7 is a connection schematic diagram of the connecting member and the detecting element in the embodiment of the present utility model;

[0031] Figure 8 is a schematic diagram of the positioning member in the embodiment of the present utility model;

[0032] Figure 9 is a schematic diagram of the positioning member in the embodiment of the present utility model;

[0033] Figure 10 In the embodiment of the present utility model Figure 4 is an enlarged schematic view of part B.

[0034] Reference numerals:

[0035] Testing device 10; Workbench 100; Base body 110; Second connection hole 111; Fixed plate 120; Guide post 130; Moving shaft 140; Positioning member 200; Support surface 210; Second sink 211; Receiver 220; Positioning hole 221; Limiting structure 230; Plug hole 240; Driving device 300; Fixed seat 310; Moving end 320; Moving assembly 400; Moving part 410; Through hole 411; First connection hole 412; Connecting member 420; First end 421; First sink 4211; Second end 422; Fixed hole 4221; Fixing member 500; Detection element 510; First abutting member 600; Fixing portion 610; Adjusting portion 620; Second abutting member 700; First distance L1; Second distance L2. Detailed implementation manners

[0036] The embodiments of the present utility model will be described in detail below. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present utility model, and should not be construed as a limitation of the present utility model.

[0037] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as up, down, front, back, left, right, etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model.

[0038] In the description of the present utility model, the meaning of "several" is more than one, the meaning of "multiple" is more than two, "greater than", "less than", "exceeding", etc. are understood as not including the present number, and "above", "below", "within", etc. are understood as including the present number. If there is a description of "first" and "second", it is only for the purpose of distinguishing technical features, and should not be construed as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the sequence relationship of the indicated technical features.

[0039] In the description of the present utility model, unless otherwise clearly defined, terms such as "set", "installed", "connected", etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present utility model in combination with the specific content of the technical solution.

[0040] In the description of the present utility model, the descriptions with reference to terms such as "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples" mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0041] The present utility model provides a test device, which can be used to test acoustic products, such as headphones, sound cards, or speakers, etc. It should be noted that the first direction in the present utility model is the direction in which the test element moves during the detection process, and the up-down direction in the attached drawings is the first direction. The second direction and the third direction are the directions in which the relative positions of the probe and the positioning member are changed, and the left-right direction in the attached drawings is the second direction, and the front-back direction is the third direction. The second direction and the third direction are perpendicular to the first direction.

[0042] Next, with reference to the accompanying drawings of the specification, the test device 10 of the first aspect embodiment of the present utility model will be described. Refer to Figures 1 to 3 As shown, the embodiment of the present utility model provides a test device for testing acoustic products. The test device 10 includes a workbench 100, a positioning member 200, a driving device 300, a movable assembly 400, a detection element 510, and a first abutting member 600. Among them, the workbench 100 is the base for testing. The positioning member 200 is connected to the workbench 100 and placed on the workbench 100. The positioning member 200 has a support surface 210, and the support surface 210 is used to place and fix the acoustic product.

[0043] The driving device 300 includes a fixed seat 310 and a movable end 320. The fixed seat 310 is fixedly connected to the workbench 100. The movable end 320 is connected to the fixed seat 310, and the movable end 320 is driven to move along the first direction, that is, the movable end 320 can move relative to the fixed seat 310 along the first direction under the action of an external force. In this embodiment, the driving mode of the driving device 300 is cylinder transmission, and the movable end 320 is the part where the cylinder performs telescopic movement. In other embodiments (not shown in the figure), the driving mode of the driving device 300 can also be gear transmission, or belt transmission, or chain transmission, etc.

[0044] The movable component 400 is connected to the movable end 320 of the driving device 300. When the movable end 320 moves in the first direction, the movable component 400 will also move in the same direction following the movable end 320, and at least a part of the movable component 400 corresponds to the support surface 210 in the first direction. Since the detection element 510 is the main component for testing acoustic products, the position where the detection element 510 is arranged needs to correspond to the support surface 210 in the first direction, so that the detection element 510 can normally detect the acoustic products. Also, since the detection element 510 is connected to the side of the movable component 400 facing the support surface 210, when the movable component 400 moves following the movable end 320, the movable component 400 will also drive the detection element 510 to move so that the detection element 510 can contact the acoustic products. Therefore, a part of the movable component 400 also needs to correspond to the support surface 210, and this part of the movable component 400 corresponding to the support surface 210 is used to connect the detection element 510.

[0045] The first abutting member 600 is connected to the workbench 100, and the first abutting member 600 corresponds to the movable component 400 in the first direction. When the movable component 400 moves following the movable end 320 of the driving device 300, the movable component 400 will move a certain distance in the first direction and then abut against the first abutting member 600. At this time, the first abutting member 600 will hinder the movement of the movable component 400.

[0046] Specifically, for the convenience of understanding, this embodiment will be exemplarily described by taking one of the acoustic products (such as headphones) as an example. Before testing the headphones, it is necessary to preset the abutting height of the first abutting member 600 against the movable component 400. When the movable end 320 of the driving device 300 moves, the movable component 400 will move along the first direction following the movable end 320, and the movable component 400 will drive the detection element 510 to move along the first direction. When the movable component 400 abuts against the first abutting member 600, the first abutting member 600 will hinder the movement of the movable component 400 and keep the movable component 400 in its original position. Since the abutting height between the first abutting member 600 and the movable component 400 is preset, when the first abutting member 600 contacts the movable component 400, the detection element 510 just contacts the speaker of the headphones and applies a certain pressure to the headphones, avoiding the situation of poor contact and the need for repeated detection caused by too small pressure applied by the detection element 510. At the same time, the preset abutting height can also avoid the phenomenon of product defect caused by too large pressure applied by the detection element 510, so that the testing device 10 can test the headphones for qualification. Since the contact position between the first abutting member 600 and the movable component 400 can be kept consistent during each test process, the contact position between the detection element 510 and the headphones and the pressure applied by the detection element 510 to the headphones are both kept consistent, ensuring the contact stability between the detection element 510 and the speaker of the headphones and improving the testing efficiency of the acoustic product and the yield rate of the product.

[0047] In some embodiments, referring to Figures 2 to 5 As shown, the workbench 100 includes a base body 110, a fixing plate 120 and guide columns 130. The base body 110 and the fixing plate 120 are arranged at intervals along the first direction. The two ends of the guide columns 130 are respectively connected to the fixing plate 120 and the base body 110, and the fixed seat 310 is connected to the fixing plate 120. Specifically, the guide columns 130 are arranged between the base body 110 and the fixing plate 120, and the guide columns 130 are used to connect the base body 110 and the fixing plate 120 and support the fixing plate 120. The first abutting member 600 and the positioning member 200 are connected to the base body 110, the fixed seat 310 of the driving device 300 is fixed to the fixing plate 120, and the movable end 320 is located between the fixing plate 120 and the base body 110. In this embodiment, the fixed seat 310 of the driving device 300 is fixedly connected to the fixing plate 120 by bolts. In other embodiments, the fixed seat 310 can also be connected to the fixing plate 120 by flange connection or other connection methods such as welding.

[0048] In some embodiments, referring to Figure 1As shown, the testing device 10 further includes a movable shaft 140. The movable shaft 140 is movably connected to the guide post 130. The movable component 400 is provided with a through hole 411. The movable shaft 140 and the guide post 130 are inserted through the through hole 411, and the movable shaft 140 moves along with the movable component 400 in the first direction. Specifically, the movable shaft 140 and the guide post 130 are inserted through the through hole 411 of the movable component 400, and the movable shaft 140 is connected to the movable component 400 through the through hole 411. When the movable component 400 moves along with the movable end 320 of the driving device 300, the movable component 400 also drives the movable shaft 140 to move in the first direction. The guide post 130 is arranged along the first direction, and the movable shaft 140 is connected to the guide post 130. The guide post 130 provides a guiding function for the movable shaft 140. Therefore, when the movable component 400 drives the movable shaft 140 to move, the movable component 400 can ensure that the moving direction of each test is always along the first direction through the movable shaft 140 and the guide post 130, thereby ensuring that the position where the detection element 510 contacts the acoustic product each time is the same position, and thus improving the contact stability between the detection element 510 and the acoustic product.

[0049] In some embodiments, referring to Figure 3 and Figure 4As shown, the testing device 10 further includes a second abutting member 700. The second abutting member 700 is connected to the fixed plate 120. One end of the second abutting member 700 is disposed between the fixed plate 120 and the movable assembly 400, and has a first distance L1 from the side of the fixed plate 120 facing the movable assembly 400. One end of the movable shaft 140 facing the fixed plate 120 has a second distance L2 from the side of the movable assembly 400 facing the fixed plate 120, and the first distance L1 is not less than the second distance L2. Specifically, one end of the second abutting member 700 is connected to the fixed plate 120, and the other end is between the fixed plate 120 and the movable assembly 400. Wherein, the end of the second abutting member 700 between the fixed plate 120 and the movable assembly 400 is spaced from the side of the fixed plate 120 facing the movable assembly 400, and there is a first distance L1 therebetween. Similarly, one end of the movable shaft 140 is also between the fixed plate 120 and the movable assembly 400. The end of the movable shaft 140 between the fixed plate 120 and the movable assembly 400 is spaced from the side of the movable assembly 400 facing the fixed plate 120, and there is a second distance L2 therebetween, and the first distance L1 is not less than the second distance L2. Thus, the fixed plate 120 can be protected when the acoustic product test is completed. Because when the movable end 320 of the driving device 300 moves in the first direction towards the fixed plate 120 for resetting, the movable assembly 400 also moves together with the movable end 320. After moving a certain distance, the second abutting member 700 abuts against the movable assembly 400 and prevents the movable assembly 400 from moving, so that the movable shaft 140 does not contact the fixed plate 120, avoiding damage to the fixed plate 120 caused by the movable shaft 140.

[0050] In some embodiments, referring to Figure 3 and Figure 6 As shown, the movable assembly 400 includes a moving member 410 and a connecting member 420. The moving member 410 is connected to the movable end 320, and the moving member 410 moves along with the movable end 320, thereby driving the detecting element 510 to move. The movable shaft 140 and the guide post 130 are passed through the moving member 410. The connecting member 420 has a first end 421 and a second end 422. The first end 421 of the connecting member 420 is movably connected to the moving member 410. The second end 422 corresponds to the supporting surface 210 in the first direction, and the second end 422 of the connecting member 420 is connected to the detecting element 510. Further, the connecting member 420 is movably connected to the moving member 410 so that the connecting member 420 can move relative to the moving member 410 to adjust the position, thereby indirectly adjusting the position of the detecting element 510, so that the detecting element 510 can be adjusted accordingly according to the position of the acoustic product before the test, thereby improving the test efficiency of the product.

[0051] In some embodiments, referring to Figure 6As shown, a first connection hole 412 is provided on one side of a moving part 410 connected to a connecting part 420. A first sunk groove 4211 is provided at a first end 421 of the connecting part 420. The first sunk groove 4211 penetrates through the first end 421 of the connecting part 420 to be connected and fixed to the first connection hole 412. Among them, the length of the first sunk groove 4211 in the second direction is greater than the aperture of the first connection hole 412, so that the first end 421 can move relative to the moving part 410 in the second direction, and the second direction is perpendicular to the first direction. That is, within the length range of the first sunk groove 4211 in the second direction, the connecting part 420 can move relative to the moving part 410 in the second direction, so as to change the position of the connecting part 420 relative to the moving part 410, thereby realizing the movable connection between the moving part 410 and the connecting part 420. And, since the detection element 510 is connected to the connecting part 420, the connecting part 420 can adjust the position of the detection element 510 relative to the support surface 210 of the positioning part 200 through the first connection hole 412 and the first sunk groove 4211.

[0052] In other embodiments, the connecting part 420 can also be movably connected to the moving part 410 in other ways. For example: a guide rail is provided on the moving part 410, and a sliding groove corresponding to the guide rail is provided on the connecting part 420, and the moving part 410 and the connecting part 420 are movably connected by a sliding method; or multiple groups of threaded holes are provided on the moving part 410, the multiple groups of threaded holes are spaced apart and the spacing of each group of threaded holes is different, and the connecting part 420 is detachably connected to each group of threaded holes, and is movably connected to the moving part 410 by connecting to threaded holes at different positions.

[0053] In some embodiments, referring to Figure 1 、 Figure 6 and Figure 7 As shown, the connecting part 420 has a fixing hole 4221. The fixing hole 4221 is provided at a second end 422 and penetrates through the connecting part 420. The testing device 10 further includes a fixing part 500. The fixing part 500 passes through the fixing hole 4221. The detection element 510 is connected to the fixing part 500, and the fixing part 500 is made of an insulating material. Specifically, in this embodiment, since the movable assembly 400 needs to be provided with hole positions to be connected to other components, the movable assembly 400 is preferably made of a metal material. And the detection element 510 needs to be connected to a power source during testing, and the metal material has electrical conductivity. Therefore, connecting the detection element 510 through the fixing part 500 made of an insulating material can prevent the movable assembly 400 from affecting the conductivity of the detection element 510, thereby enhancing the testing accuracy of the testing device 10. In other embodiments, the testing device 10 may not include the fixing part 500. For example: the connecting part 420 is made of a rigid insulating material (such as plastic, or resin, etc.), and thus the detection element 510 can be connected to the connecting part 420, and the connecting part 420 will not affect the power-on of the detection element 510.

[0054] In some embodiments, referring to Figure 10 as shown, the first abutting member 600 includes a connected fixing portion 610 and an adjusting portion 620. The fixing portion 610 is connected to the workbench 100, and the adjusting portion 620 can move relative to the fixing portion 610 in a first direction. Specifically, the first abutting member 600 can change the height of abutting against the movable assembly 400 through the adjusting portion 620. Since different acoustic products can withstand different pressures exerted by the detection element 510 during testing, it is necessary to change the abutting height of the first abutting member 600 to change the stop position of the detection element 510 and the pressure exerted on the acoustic product, so that the testing device 10 can be applicable to different acoustic products.

[0055] In some embodiments, referring to Figure 8 and Figure 9 as shown, the testing device 10 further includes a receiver 220. The receiver 220 is connected to the support surface 210 and is disposed opposite to the detection element 510. A positioning hole 221 is provided on the side of the receiver 220 facing the detection element 510, and the positioning hole 221 is used to fix the acoustic product. Specifically, the receiver 220 is an acoustic receiver of the testing device 10. Since the receiver 220 is used to fix the acoustic product, it is necessary to be disposed opposite to the detection element 510 so that the detection element 510 can contact the acoustic product. Specifically, when testing an acoustic product, the acoustic product emits sound, and the receiver 220 receives the sound and transmits it into the testing device. The testing device detects the sound emitted by the acoustic product to determine whether the acoustic product meets the qualified standard.

[0056] In this embodiment, a hole position for fixing the receiver 220 is formed on the support surface 210. The receiver 220 is disposed in the hole position. The support surface 210 limits the circumferential movement of the receiver 220 relative to the support surface 210 through the hole position. At the same time, the positioning member 200 is further provided with a pin hole 240. The positioning member 200 further fixes the receiver 220 by means of a pin to limit the circumferential movement of the receiver 220 relative to the support surface 210 of the positioning member 200. In other embodiments, the receiver 220 can also be connected to the support surface 210 in other ways, such as: bolt connection, or snap connection, or other connection methods such as integral molding connection.

[0057] In some embodiments, referring to Figure 5 and Figure 8As shown, a second connection hole 111 is provided on one side of the workbench 100 connected to the positioning member 200, and the positioning member 200 is provided with a second sinking groove 211, wherein the length of the second sinking groove 211 along the third direction is greater than the aperture of the second connection hole 111, so that the positioning member 200 can move relative to the workbench 100 along the third direction, and the second direction is perpendicular to the first direction. That is, within the length range of the second sinking groove 211 along the third direction, the positioning member 200 can move relative to the workbench 100 along the third direction and be fixed on the workbench 100, thereby changing the position of the positioning member 200 relative to the workbench 100. The acoustic product is provided on the positioning member 200, and the positioning member 200 can adjust the position of the acoustic product relative to the detection element 510 through the second connection hole 111 and the second sinking groove 211.

[0058] In some embodiments, see Figure 9 As shown, in this embodiment, the acoustic product is interference-fitted in the positioning hole 221 of the receiver 220, and the receiver 220 limits the circumferential movement of the acoustic product relative to the receiver 220 through the positioning hole 221. At the same time, the positioning member 200 includes a limiting structure 230, which is connected to the support surface 210, and the side of the limiting structure 230 away from the support surface 210 is raised along the first direction. The raised portion of the limiting structure 230 is used to abut against the acoustic product to prevent the acoustic product from rotating during the test process.

[0059] The embodiments of the utility model are described in detail above in conjunction with the accompanying drawings, but the utility model is not limited to the above embodiments. Various changes can be made within the knowledge of ordinary technicians in the relevant technical field without departing from the purpose of the utility model. In addition, the embodiments of the utility model and the features in the embodiments can be combined with each other without conflict.

Claims

1. A test device for testing acoustic products, characterized in that, Comprising: Workbench; Positioning member, connected to the workbench and having a supporting surface; Driving device, including a fixed seat and a movable end connected to each other, the fixed seat is connected to the workbench, and the movable end is driven to move in a first direction; Movable assembly, connected to the movable end, at least a part of the movable assembly corresponds to the supporting surface in the first direction; Detection element, connected to the side of the movable assembly facing the supporting surface and corresponding to the supporting surface in the first direction; And First abutting member, connected to the workbench and corresponding to the movable assembly in the first direction; Wherein, the movable assembly moves with the movable end and drives the detection element to move in the first direction until the movable assembly abuts against the first abutting member.

2. The test device according to claim 1, characterized in that, The workbench includes a base body, a fixing plate and a guide post. The base body and the fixing plate are arranged at intervals in the first direction. Two ends of the guide post are respectively connected to the fixing plate and the base body, and the fixed seat is connected to the fixing plate.

3. The testing device according to claim 2, characterized in that, It further includes a movable shaft. The movable shaft is movably connected to the guide post. The movable assembly is provided with a through hole. The movable shaft and the guide post are arranged through the through hole, and the movable shaft moves with the movable assembly in the first direction.

4. The testing device according to claim 3, characterized in that, It further includes a second abutting member. The second abutting member is connected to the fixing plate. One end of the second abutting member is arranged between the fixing plate and the movable assembly and has a first distance from the side of the fixing plate facing the movable assembly. One end of the movable shaft facing the fixing plate and the side of the movable assembly facing the fixing plate have a second distance. The first distance is not less than the second distance.

5. The test device according to claim 1, wherein The movable assembly includes a moving member and a connecting member. The moving member is connected to the movable end. The connecting member has a first end and a second end. The first end is movably connected to the moving member. The second end corresponds to the supporting surface in the first direction and is connected to the detection element.

6. The test device according to claim 5, wherein The moving member is provided with a first connecting hole. The first end is provided with a first sunk groove. The length of the first sunk groove in a second direction is greater than the aperture of the first connecting hole, so that the first end can move relative to the moving member in the second direction; the second direction is perpendicular to the first direction.

7. The test device according to claim 5, wherein, The connecting member has a fixing hole. The fixing hole is arranged at the second end and penetrates through the connecting member. The testing device further includes a fixing member. The fixing member is arranged through the fixing hole, and the detection element is connected to the fixing member; the fixing member is made of an insulating material.

8. The test device according to claim 1, characterized in that The first abutting member includes a fixed part and an adjusting part connected to each other. The fixed part is connected to the workbench, and the adjusting part can move relative to the fixed part in the first direction.

9. The testing device according to claim 1, characterized in that, It further includes a receiver. The receiver is connected to the supporting surface and is arranged opposite to the detection element. A positioning hole is arranged on the side of the receiver facing the detection element. The positioning hole is used for fixing the acoustic product.

10. The testing device according to claim 1, wherein The workbench is provided with a second connection hole, and the positioning member is provided with a second counterbore. The length of the second counterbore in the third direction is greater than the aperture of the second connection hole, so that the positioning member can move relative to the workbench in the third direction; the third direction is perpendicular to the first direction.

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