Vacuum testing device for detecting interior of loudspeaker cavity

Abstract

The utility model discloses a vacuum testing device for detecting the interior of a loudspeaker cavity, which comprises a base and a loudspeaker detachably mounted on the base, the base is provided with a frame, the frame is provided with a movable adjusting mechanism, the output end of the movable adjusting mechanism is provided with a fixing head, and the fixing head is abutted against the rear end of the loudspeaker; a vacuum tester is further included, an air pipe is arranged at the output end of the vacuum tester, and the air pipe is detachably connected with the fixing head. According to the device, the vacuum tester is arranged, a corresponding air pressure value is set on the vacuum tester, the air pipe is installed on the movable adjusting mechanism, the position of the fixing head can be adjusted through the movable adjusting mechanism, the fixing head is aligned with a loudspeaker horn hole, then the vacuum tester is started to exhaust air into a loudspeaker cavity, and when the air tightness is qualified, the air pipe is installed on the air pipe. If not, the vacuum tester is turned on to be green, and is turned on to be red; therefore, the airtightness of the loudspeaker is detected, and the detection is reasonable and effective.

Description

Technical Field

[0001] This utility model relates to the field of loudspeaker testing technology, specifically to a vacuum testing device for testing the interior of a loudspeaker cavity. Background Technology

[0002] In the current loudspeaker consumer market, some products are positioned for outdoor use. Outdoor scenarios present many uncertainties, including harsh environments. In such cases, loudspeakers face stringent requirements for waterproofing and airtightness. Some conventional loudspeaker manufacturing processes may lack scientifically effective testing methods. Designers often rely on structural analysis and accumulated experience to make judgments. This method lacks scientific rigor and accuracy, and is not convincing to consumers, failing to accurately determine the loudspeaker's waterproofing and airtightness.

[0003] In the absence of effective testing equipment, loudspeakers that have not undergone rigorous testing are at risk of water intrusion once they enter the market. Once water intrusion occurs, it can easily cause the loudspeakers to burn out, affecting the normal use of the product. Moreover, judging based on subjective assumptions is not only unconvincing but also involves many uncertainties. This can lead to a large number of loudspeakers being produced and receiving market complaints due to quality problems. Therefore, there is an urgent need for a device that can scientifically and accurately test the sealing performance of the internal cavity of loudspeakers. Utility Model Content

[0004] The main objective of this invention is to provide a vacuum testing device for detecting the internal vacuum of a loudspeaker cavity, thereby solving the aforementioned technical problems.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a vacuum testing device for detecting the interior of a loudspeaker cavity, comprising a base and a loudspeaker detachably mounted on the base, a frame on the base, a movable adjustment mechanism on the frame, a fixed head at the output end of the movable adjustment mechanism, the fixed head abutting against the rear end of the loudspeaker; and a vacuum tester, the output end of which is provided with an air tube, the air tube being detachably connected to the fixed head.

[0006] Based on the above scheme and as a preferred embodiment of the above scheme: the movable adjustment mechanism includes a horizontal plate detachably mounted on the top of the frame, a first fixing groove is opened on the horizontal plate, an mounting plate is detachably mounted on the first fixing groove, a fixing seat is provided on the mounting plate, and a pressure handle is hinged to the top of the fixing seat; a sleeve is also provided on the fixing seat, a pressure rod is slidably mounted in the sleeve, a connecting block is provided at the top of the pressure rod, and the pressure handle is hinged to the connecting block; the bottom of the pressure rod is detachably connected to the fixing head.

[0007] Based on the above solution and as a preferred embodiment of the above solution: the base is provided with a mounting plate, a support frame is provided on one side of the mounting plate, the support frame is provided with a support groove, and the speaker is detachably connected to the mounting plate.

[0008] Based on the above scheme and as a preferred embodiment of the above scheme: the vacuum tester is equipped with an indicator light.

[0009] Based on the above solution and as a preferred embodiment of the above solution: a second fixing groove is provided at the bottom of the base, and the mounting plate is detachably installed on the second fixing groove.

[0010] The beneficial effects of this utility model are as follows: This device is equipped with a vacuum tester, and a corresponding air pressure value is set on the vacuum tester. Then, the air tube is installed on the movable adjustment mechanism, and the position of the fixed head can be adjusted by the movable adjustment mechanism to align the fixed head with the speaker hole. Then, the vacuum tester is started to evacuate air into the speaker cavity. When the air tightness is qualified, a green light is lit on the vacuum tester; if it is unqualified, a red light is lit. This is used to test the air tightness of the speaker and the rationality and effectiveness of the inspection. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0012] Figure 2 This is a rear perspective view of the present invention. Detailed Implementation

[0013] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. However, the specific implementation methods and embodiments described below are for illustrative purposes only and are not intended to limit the present invention.

[0014] Example 1

[0015] See attached diagram. Figures 1 to 2 This embodiment provides a vacuum testing device for detecting the interior of a loudspeaker cavity, comprising a base 1 and a loudspeaker detachably mounted on the base 1. The device is characterized by: a frame 2 on the base 1, a movable adjustment mechanism on the frame 2, a fixed head 6 at the output end of the movable adjustment mechanism, and the fixed head 6 abutting against the rear end of the loudspeaker; it also includes a vacuum tester 8, with an air pipe 80 at the output end of the vacuum tester 8, and the air pipe 80 being detachably connected to the fixed head 6.

[0016] Preferably, the movable adjustment mechanism includes a horizontal plate 3 detachably mounted on the top of the frame 2, a first fixing groove 30 is provided on the horizontal plate 3, an mounting plate 4 is detachably mounted on the first fixing groove 30, a fixing seat 5 is provided on the mounting plate 4, and a pressure handle 50 is hinged to the top of the fixing seat 5; a sleeve 51 is also provided on the fixing seat 5, a pressure rod 43 is slidably mounted in the sleeve 51, a connecting block 52 is provided at the top of the pressure rod 43, and the pressure handle 50 is hinged to the connecting block 52; the bottom of the pressure rod 43 is detachably connected to the fixing head 6.

[0017] Furthermore, the base 1 is provided with a mounting plate 7, and a support frame 70 is provided on one side of the mounting plate 7. The support frame 70 is provided with a support groove 71, and the speaker is detachably connected to the mounting plate 7.

[0018] Furthermore, the vacuum tester 8 is equipped with an indicator light 81.

[0019] Furthermore, a second fixing groove is provided at the bottom of the base 1, and the mounting plate 7 is detachably installed on the second fixing groove.

[0020] Working principle: This device is equipped with a vacuum tester, and the corresponding air pressure value is set on the vacuum tester 8. Then, the air tube 80 is installed on the movable adjustment mechanism. The position of the fixed head 6 can then be adjusted through the movable adjustment mechanism to align the fixed head 6 with the speaker hole of the speaker 10 (the speaker 10 has a breathable sticker inside, which allows gas to pass through but prevents water from entering. The internal seal of the speaker cavity is achieved by sealing the speaker with glue and a sealing gasket). Then, the vacuum tester 8 is started to evacuate air from the speaker cavity of the speaker 10. When the air tightness is qualified, a green light illuminates on the vacuum tester 8; if it fails, a red light illuminates. This method is used to test the air tightness of the speaker and the rationality and validity of the inspection.

[0021] In the movable adjustment mechanism, the horizontal plate 3 is installed on the frame 2 by bolts 300, and the mounting plate 4 is installed on the first fixed groove 30 by bolts 300. Since the center hole at the bottom of the speaker may not be set in the exact center, it may be on the left, right, or lower or higher. Therefore, the position of the fixed head 6 needs to be adjusted by the movable adjustment mechanism to align with the hole for air extraction detection. The mounting plate 7 and the support frame 70 on one side are used to fix and protect the speaker.

[0022] Example 2

[0023] Unlike Embodiment 1, the moving adjustment mechanism in this embodiment uses a cylinder for moving adjustment. Specifically, a first cylinder can be installed on the top of the frame 2, the horizontal plate 3 is slidably connected to the frame, and the output end of the first cylinder is fixedly connected to the horizontal plate 3 to adjust the vertical height of the horizontal plate; a second cylinder is installed on the horizontal plate 3, and the output end of the second cylinder is fixedly connected to one side of the mounting plate 4, and the mounting plate 4 is slidably connected to the first fixing groove 30.

[0024] The above embodiments are merely preferred embodiments of the present utility model and are not intended to limit the scope of protection of the present utility model. Therefore, all equivalent changes made to the structure, shape, and principle of the present utility model should be covered within the scope of protection of the present utility model.

Claims

1. A vacuum testing device for detecting the interior of a loudspeaker cavity, comprising a base (1) and a loudspeaker detachably mounted on the base (1), characterized in that: The base (1) is provided with a frame (2), the frame (2) is provided with a moving adjustment mechanism, the output end of the moving adjustment mechanism is provided with a fixed head (6), the fixed head (6) abuts against the rear end of the speaker; it also includes a vacuum tester (8), the output end of the vacuum tester (8) is provided with an air pipe (80), the air pipe (80) is detachably connected to the fixed head (6).

2. The vacuum testing device for detecting the interior of a loudspeaker cavity according to claim 1, characterized in that: The movable adjustment mechanism includes a horizontal plate (3) that is detachably installed on the top of the frame (2). A first fixing groove (30) is opened on the horizontal plate (3). An installation plate (4) is detachably installed on the first fixing groove (30). A fixing seat (5) is provided on the installation plate (4). A pressure handle (50) is hinged to the top of the fixing seat (5). A sleeve (51) is also provided on the fixing seat (5). A pressure rod (43) is slidably installed in the sleeve (51). A connecting block (52) is provided at the top of the pressure rod (43). The pressure handle (50) is hinged to the connecting block (52). The bottom of the pressure rod (43) is detachably connected to the fixing head (6).

3. The vacuum testing device for detecting the interior of a loudspeaker cavity according to claim 2, characterized in that: The base (1) is provided with a mounting plate (7), and a support frame (70) is provided on one side of the mounting plate (7). The support frame (70) is provided with a support groove (71). The speaker is detachably connected to the mounting plate (7).

4. The vacuum testing device for detecting the interior of a loudspeaker cavity according to claim 3, characterized in that: The vacuum tester (8) is equipped with an indicator light (81).

5. A testing device for detecting the vacuum inside a loudspeaker cavity according to claim 4, characterized in that: The base (1) has a second fixing groove at its bottom, and the mounting plate (7) is detachably mounted on the second fixing groove.

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