Earphone air tightness test fixture

Abstract

The utility model discloses an earphone air tightness test fixture, which comprises a fixed frame, a test pressing block is slidably mounted on the inner side of the fixed frame, a plurality of electric telescopic rods are fixed between the test pressing block and the fixed frame, a test board is arranged below the test pressing block, the test board is detachably fixed with the fixed frame, and the electric telescopic rods are fixed on the test pressing block. A detection groove is formed in the upper surface of the test board, two symmetrical test holes are formed in the middle of the bottom face of the detection groove, two guide strips are arranged above the test board, supporting columns are fixed to the bottoms of the two ends of the two guide strips, fixing rods are arranged below the supporting columns, the bottom ends of the fixing rods are fixed to a fixing frame, and the bottom ends of the fixing rods are fixed to the test board. A moving plate is slidably mounted between the two guide strips, and a plurality of positioning holes are distributed in the surface of the moving plate in a rectangular array mode. According to the utility model, more operation time can be saved, so that the time required for testing the air tightness of the earphone is shortened, and the testing efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of earphone test fixtures, in particular to an earphone air tightness test fixture. Background Art

[0002] Headphones are a pair of conversion units that receive electrical signals from a media player or receiver and convert them into audible sound waves using speakers close to the ears. Headphones can be detached from the media player and connected using just a single plug, allowing you to listen to audio without disturbing others. They can also block out ambient sounds, making them useful for use in noisy environments such as recording studios, bars, travel, and while exercising.

[0003] In order to ensure the waterproof and sealing performance of headphones, they need to be tested for airtightness after production. The core purpose of airtightness testing of headphones is to ensure the waterproof and sealing performance of the product, thereby improving product quality and user experience. Through airtightness testing, the waterproof and sealing performance of headphones in various usage scenarios can be tested to ensure that the headphones can still work normally in humid or underwater environments, avoiding damage or malfunction caused by water intrusion.

[0004] However, when performing air tightness testing on headphones, manual placement and removal of the headphones are required. Manual operation wastes a lot of time during the test, resulting in reduced test efficiency. Therefore, this does not meet existing needs. We have proposed an earphone air tightness test fixture. Utility Model Content

[0005] The purpose of the present invention is to provide an earphone air tightness test fixture to solve the problem that when performing air tightness test on earphones proposed in the above background technology, manual placement and removal of earphones are required, and manual operation wastes a lot of time during the test, resulting in reduced test efficiency.

[0006] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: an earphone air tightness test fixture, comprising a fixed frame, a test pressure block is slidably installed on the inner side of the fixed frame, a plurality of electric telescopic rods are fixed between the test pressure block and the fixed frame, a test table is provided below the test pressure block, the test table and the fixed frame are detachably fixed, a detection groove is provided on the upper surface of the test table, two symmetrical test holes are provided in the middle of the bottom surface of the detection groove, two guide bars are provided above the test table, support columns are fixed to the bottom of both ends of the two guide bars, a fixing rod is provided below the support column, the bottom end of the fixing rod is fixed to the fixed frame, a movable plate is slidably installed between the two guide bars, and a plurality of positioning holes are distributed in a rectangular array on the surface of the movable plate.

[0007] Preferably, a circular hole is provided inside the bottom end of the support column, the top end of the fixing rod is slidably inserted into the inner side of the circular hole, and the inner diameter of the circular hole is consistent with the outer diameter of the fixing rod.

[0008] Preferably, a return spring is sleeved on the outer side of the fixing rod, the top end of the return spring is fixed to the bottom end of the support column, and the bottom end of the return spring is detachably connected to the fixing frame.

[0009] Preferably, buffer holes are provided on both sides of the test hole, and the size of the buffer holes is exactly the same as that of the test hole.

[0010] Preferably, the bottom of the test pressing block is provided with grooves corresponding to the test holes and the buffer holes, and the grooves match the shape of the earphones.

[0011] Preferably, a buffer sealing pad is bonded to the bottom surface of the test pressing block, and a surface of the buffer sealing pad is provided with a reserved hole.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] 1. This utility model utilizes the rectangular array of positioning holes on the surface of the movable plate to place multiple test headphones. During the test, the position of the test headphones can be changed by simply sliding the movable plate, which can save more operation time, thereby shortening the time required for headphone air tightness testing and improving test efficiency.

[0014] 2. The utility model provides buffer holes of the same size on both sides of the test hole. The buffer holes ensure that the earphones on both sides of the tested earphone will not be damaged due to the squeezing between the test block and the test table when they are moved down at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the structure of the test bench of the utility model;

[0017] Figure 3 This is a schematic structural diagram of the buffer seal of the utility model;

[0018] Figure 4 for Figure 1 A magnified view of the structure at point A in the middle.

[0019] In the figure: 1. Fixed frame; 2. Test block; 3. Electric telescopic rod; 4. Test table; 5. Guide bar; 6. Support column; 7. Moving plate; 8. Positioning hole; 9. Inspection slot; 10. Test hole; 11. Buffer hole; 12. Buffer sealing pad; 13. Reserved hole; 14. Fixed rod; 15. Reset spring. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0021] like Figures 1 to 4 As shown, a headphone air tightness test fixture is provided, a test pressure block 2 is slidably installed on the inner side of the fixing frame 1, a plurality of electric telescopic rods 3 are fixed between the test pressure block 2 and the fixing frame 1, a test table 4 is provided below the test pressure block 2, the test table 4 and the fixing frame 1 are detachably fixed, a detection groove 9 is provided on the upper surface of the test table 4, two symmetrical test holes 10 are provided in the middle of the bottom surface of the detection groove 9, two guide bars 5 are provided above the test table 4, support columns 6 are fixed at the bottom of both ends of the two guide bars 5, a fixing rod 14 is provided below the support column 6, the bottom end of the fixing rod 14 is fixed to the fixing frame 1, a movable plate 7 is slidably installed between the two guide bars 5, a plurality of positioning holes 8 are distributed in a rectangular array on the surface of the movable plate 7, and a plurality of headphones with tests are placed using the positioning holes 8 distributed in a rectangular array on the surface of the movable plate 7. During the test, it is only necessary to slide the movable plate 7 to change the position of the test headphones, which can save more operation time.

[0022] A circular hole is provided inside the bottom end of the support column 6, and the top end of the fixing rod 14 is slidably inserted into the inside of the circular hole, and the inner diameter of the circular hole is consistent with the outer diameter of the fixing rod 14. A reset spring 15 is sleeved on the outside of the fixing rod 14, and the top end of the reset spring 15 is fixed to the bottom end of the support column 6, and the bottom end of the reset spring 15 is detachably connected to the fixing frame 1. The reset spring 15 is used to elastically support the support column 6. When the test block 2 moves downward and squeezes the guide bar 5, it is ensured that the guide bar 5, the support column 6, and the movable plate 7 can move downward at the same time as the test block 2, so that the earphone to be tested can smoothly enter the test hole 10 and be tested.

[0023] There are buffer holes 11 on both sides of the test hole 10. The size of the buffer holes 11 is exactly the same as that of the test hole 10. The existence of the buffer holes 11 ensures that the earphones on both sides of the tested earphones will not be damaged due to the squeezing between the test block 2 and the test table 4 when they move down at the same time.

[0024] The bottom of the test block 2 is provided with grooves corresponding to the test hole 10 and the buffer hole 11, and the grooves match the shape of the earphone. The bottom surface of the test block 2 is bonded with a buffer sealing gasket 12, and the surface of the buffer sealing gasket 12 is provided with a reserved hole 13. After the test block 2 moves down and fits with the test table 4, the buffer sealing gasket 12 is used to ensure the sealing between the earphone and the test block 2 and the test table 4, so as to avoid the gap between the test block 2 and the test table 4 and affect the test results.

[0025] Working principle: First, the staff pulls the movable plate 7 so that the end of the movable plate 7 is located at one end of the guide bar 5. Then the staff places the earphones to be tested one by one in the positioning holes 8 on the surface of the movable plate 7. After the earphones are placed, the device is powered on and started. The staff pushes the movable plate 7 to move a position so that the earphone at the front end of the movable plate 7 is located directly above the test hole 10. At this time, the electric telescopic rod 3 is powered on and starts to drive the test block 2 to move downward. The test block 2 after moving downward drives the movable plate 7, the support column 6, and the guide bar 5 to move downward at the same time. At this time, the reset spring 15 is compressed until the test The pressing block 2 contacts the test bench 4. At this time, the tested earphone at the front end of the movable plate 7 enters the inner side of the test hole 10, and the earphone at the position behind the tested earphone enters the buffer hole 11. After the tested earphone finishes the test, the test pressing block 2 is reset under the control of the electric telescopic rod 3. At this time, the reset spring 15 elastically recovers and drives the movable plate 7 to reset. At this time, the staff only needs to push the movable plate 7 again to move one position, so that the tested earphone and the subsequent earphone positions are moved, and the subsequent earphones can be tested, which can save more operation time, thereby shortening the time required for earphone air tightness testing and improving test efficiency.

[0026] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. An earphone air tightness test fixture, comprising a fixing frame (1), characterized in that: A test block (2) is slidably mounted on the inner side of the fixed frame (1), and a plurality of electric telescopic rods (3) are fixed between the test block (2) and the fixed frame (1). A test table (4) is provided below the test block (2), and the test table (4) is detachably fixed to the fixed frame (1). A detection groove (9) is provided on the upper surface of the test table (4), and two symmetrical test holes (10) are provided in the middle of the bottom surface of the detection groove (9). Two guide bars (5) are provided above the test table (4), and support columns (6) are fixed at the bottom of both ends of the two guide bars (5). A fixed rod (14) is provided below the support column (6), and the bottom end of the fixed rod (14) is fixed to the fixed frame (1). A movable plate (7) is slidably mounted between the two guide bars (5), and a plurality of positioning holes (8) are distributed in a rectangular array on the surface of the movable plate (7).

2. The earphone air tightness test fixture according to claim 1, characterized in that: A circular hole is provided inside the bottom end of the support column (6), and the top end of the fixing rod (14) is slidably inserted into the inside of the circular hole, and the inner diameter of the circular hole is consistent with the outer diameter of the fixing rod (14).

3. The earphone air tightness test fixture according to claim 2, characterized in that: The outer side of the fixing rod (14) is covered with a return spring (15), the top end of the return spring (15) is fixed to the bottom end of the support column (6), and the bottom end of the return spring (15) is detachably connected to the fixing frame (1).

4. The earphone air tightness test fixture according to claim 1, characterized in that: Buffer holes (11) are provided on both sides of the test hole (10), and the size of the buffer holes (11) is exactly the same as that of the test hole (10).

5. The earphone air tightness test fixture according to claim 4, characterized in that: The bottom of the test pressing block (2) is provided with grooves corresponding to the test hole (10) and the buffer hole (11), and the grooves match the shape of the earphone.

6. The earphone air tightness test fixture according to claim 5, characterized in that: A buffer sealing pad (12) is bonded to the bottom surface of the test pressing block (2), and a reserved hole (13) is provided on the surface of the buffer sealing pad (12).

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