Loudspeaker cavity sealing performance detection tool

Abstract

The utility model relates to a loudspeaker cavity leakproofness detection jig in the technical field of test fixtures, which comprises a jig main board, a die and two sealing modules, the die comprises a lower die and an upper die, the lower die is fixedly connected to the middle of the top end face of the jig main board, the upper die can abut against the top end face of the upper die, and the number of the sealing modules is two. The two sets of sealing modules are symmetrically arranged on the two sides of the lower mold in a horizontal moving mode, each sealing module comprises a clamping head, a sealing head and a water injection runner, the sealing heads are arranged at the ends, close to the mold, of the clamping heads, and the water injection runners are formed in the clamping heads; one end of the water injection runner penetrates through the interior of the sealing head and extends to the end face of one side close to the mold, the sealing head horizontally blocks the loudspeaker cavity, a good clamping and sealing structure is formed for a product shell, meanwhile, test water can be effectively injected into the loudspeaker cavity through the water injection runner, and a water tightness test is completed.

Description

Technical Field

[0001] The utility model relates to the technical field of test fixtures, in particular to a fixture for detecting the sealing performance of a loudspeaker cavity. Background Art

[0002] Micro speaker modules are important acoustic components for portable electronic devices and are widely used in portable devices such as mobile phones, computers, and tablets. Micro speaker modules are energy converters used to convert electrical and acoustic signals, emitting sound through the sound outlet on the module. Furthermore, to meet heat dissipation requirements during long-term operation, a leak vent is provided in the rear cavity of the module, which also emits a small sound when the module is operating. To ensure product reliability, the product must be leak-free at locations that should be sealed, such as gluing points, ultrasonic weld lines, and in-mold injection-molded steel sheets, excluding the sound outlet and leak vent. Therefore, product manufacturers must conduct watertightness testing on their products.

[0003] Therefore, in view of these current situations, there is an urgent need to develop a speaker cavity sealing detection fixture to meet the needs of practical use. Utility Model Content

[0004] The purpose of the present invention is to provide a speaker cavity sealing detection jig for solving the above-mentioned defects.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0006] A speaker cavity sealing detection jig includes a jig mainboard, a mold and a sealing module, the mold includes a lower mold and an upper mold, the lower mold is fixedly connected to the middle part of the top surface of the jig mainboard, and the upper mold can abut the top surface of the upper mold, there are two sealing modules, and the two groups of sealing modules can be horizontally moved and symmetrically arranged on both sides of the lower mold, the sealing module includes a clamping head, a sealing head and a water injection channel, the sealing head is arranged at the end of the clamping head close to the mold side, and the water injection channel is opened in the interior of the clamping head, one end of the water injection channel passes through the interior of the sealing head and extends to one end surface close to the mold.

[0007] In the above description, as a further solution, the sealing module also includes a starting valve, the interior of the starting valve is a retractable valve core, one end of the valve core can extend to the interior of the clamping head, and the valve core extends to the interior of the water injection channel to form a conducting or blocking structure.

[0008] In the above description, as a further solution, a clearance hole matching the clamping head is opened in the middle of the fixture mainboard, and a guide rail is provided on the edge of the clearance hole, and the clamping head is movably arranged above the clearance hole through the guide rail.

[0009] In the above description, as a further solution, the sealing module also includes a clamping cylinder, the telescopic end of the clamping cylinder is fixedly connected to the clamping head, and the clamping head can move along the axial direction of the guide rail through the clamping cylinder.

[0010] In the above description, as a further solution, the edges of the lower mold and the upper mold are provided with inlay grooves matching the clamping head, and a closed cavity can be formed between the clamping head and the lower mold and the upper mold.

[0011] In the above description, as a further solution, a water tank is provided at the bottom of the jig mainboard, the interior of the water tank is a water storage cavity, the jig mainboard cover is above the water storage cavity, and a control valve group is also provided on one side of the jig mainboard, which is connected to the water injection channel through the pipe body.

[0012] The beneficial effects produced by the utility model are as follows:

[0013] The present application relates to a speaker cavity sealing test jig that can clamp a mobile phone casing through the sealing modules on both sides of the lower mold, upper mold and jig mainboard, and horizontally block the speaker cavity through the sealing head to form a good clamping sealing structure for the product casing. At the same time, the test water can be effectively injected into the speaker cavity through the water injection channel to complete the water tightness test. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the three-dimensional structure of a speaker cavity sealing detection fixture described in this embodiment;

[0015] Figure 2 This is a schematic diagram of the structural decomposition of a speaker cavity sealing detection fixture described in this embodiment;

[0016] Figure 3 Schematic diagram of the structural decomposition of the fixture mainboard and the sealing module in this embodiment;

[0017] Figure 4 Schematic diagram of the structure of the fixture mainboard in this embodiment from the bottom perspective;

[0018] Figure 5 Schematic diagram of the structure of the fixture mainboard in this embodiment from a top view;

[0019] Figure 6 for Figure 5 Schematic diagram of the cross-sectional structure along the direction of AA;

[0020] Figure 7 for Figure 6 A schematic diagram of the partially enlarged structure of B in the middle;

[0021] In the figure: 1- fixture main board, 11- avoidance hole, 12- guide rail, 2- lower mold, 3- upper mold, 4- water tank, 41- water storage cavity, 5- sealing module, 51- clamping head, 511- water injection channel, 512- sealing head, 52- starting valve, 521- valve core, 53- clamping cylinder, 54- control valve group, 6- inlay groove. DETAILED DESCRIPTION

[0022] In order to facilitate the understanding of those skilled in the art, the present invention is further described below in conjunction with the embodiments and drawings. The contents mentioned in the embodiments are not intended to limit the present invention. The present invention is described in detail below in conjunction with the drawings.

[0023] See also Figure 1-7 , a specific implementation of a speaker cavity sealing detection jig includes a jig mainboard 1, a mold and a sealing module 5, the mold includes a lower mold 2 and an upper mold 3, the lower mold 2 is fixedly connected to the middle of the top surface of the jig mainboard 1, and the upper mold 3 can abut the top surface of the upper mold 3, the number of sealing modules 5 is two, and the two groups of sealing modules 5 can be horizontally moved and symmetrically arranged on both sides of the lower mold 2, the sealing module 5 includes a clamping head 51, a sealing head 512 and a water injection channel 511, the sealing head 512 is arranged at the end of the clamping head 51 close to the mold side, and the water injection channel 511 is opened in the interior of the clamping head 51, one end of the water injection channel 511 passes through the interior of the sealing head 512 and extends to one end surface close to the mold.

[0024] A water tank 4 is also provided at the bottom of the fixture main board 1. The interior of the water tank 4 is a water storage cavity 41. The fixture main board 1 covers the water storage cavity 41. A control valve group 54 is also provided on one side of the fixture main board 1. The control valve group 54 is connected to the water injection channel 511 through a pipe body (not shown). The control valve group 54 can be optionally composed of a combination of conventional fluid control valve bodies such as an overflow valve and a throttle valve.

[0025] Specific examples Figure 3-4 As shown, the sealing module 5 also includes a starting valve 52, the interior of the starting valve 52 is a retractable valve core 521, one end of the valve core 521 can extend to the interior of the clamping head 51, and the valve core 521 extends to the interior of the water injection channel 511 to form a conducting or blocking structure. A clearance hole 11 matching the clamping head 51 is provided in the middle of the fixture main board 1, and a guide rail 12 is provided on the edge of the clearance hole 11. The clamping head 51 is movably arranged above the clearance hole 11 through the guide rail 12. The sealing module 5 also includes a clamping cylinder 53, the retractable end of the clamping cylinder 53 is fixedly connected to the clamping head 51, and the clamping head 51 can be moved along the axial direction of the guide rail 12 through the clamping cylinder 53.

[0026] Specific examples Figure 2As shown, the edges of the lower mold 2 and the upper mold 3 are both provided with an inlay groove 6 that matches the clamping head 51 , and a closed cavity can be formed between the clamping head 51 and the lower mold 2 and the upper mold 3 .

[0027] The working process of a speaker cavity sealing test fixture is as follows: the mobile phone shell is fixed to the top surface of the lower mold 2, and then the upper mold 3 and the lower mold 2 are closed by an external pressing mechanism to effectively clamp the mobile phone shell. Then, by starting the clamping cylinder 53, the telescopic end of the clamping cylinder 53 drives the clamping head 51 to move into the inlay groove 6 of the side wall of the lower mold 2 and the upper mold 3. The clamping head 51 can be moved axially along the guide rail 12 by the clamping cylinder 53, so that the sealing head 512 horizontally blocks the speaker cavity, forming a good clamping and sealing structure for the product shell. At the same time, the starting valve 52 is opened, and the valve core 521 inside the starting valve 52 contracts downward, so that the inside of the water injection channel 511 forms a conductive structure. The water injection channel 511 can effectively inject test water into the speaker cavity to complete the water tightness test.

[0028] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention is disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technician familiar with the profession can make some changes or modifications to equivalent embodiments of the above-disclosed technical contents without departing from the scope of the technical solution of the present invention. However, any simple modifications, equivalent changes and modifications made to the above embodiments according to the technology of the present invention, which do not depart from the content of the technical solution of the present invention, are within the scope of the technical solution of the present invention.

Claims

1. A speaker cavity sealing detection fixture, characterized in that: include: A jig mainboard and a mold, the mold comprising a lower mold and an upper mold, the lower mold being fixedly connected to the middle portion of the top surface of the jig mainboard, and the upper mold being capable of abutting against the top surface of the upper mold; Sealing module: Two sets of sealing modules are provided in the middle of the fixture main board. The two sets of sealing modules can be horizontally moved and symmetrically arranged on both sides of the lower mold. The sealing module includes a clamping head, a sealing head and a water injection channel. The sealing head is arranged at the end of the clamping head close to the mold side, and the water injection channel is opened inside the clamping head. One end of the water injection channel passes through the interior of the sealing head and extends to one end face close to the mold.

2. The speaker cavity sealing test fixture according to claim 1, characterized in that: The sealing module also includes a starting valve, the interior of the starting valve is a retractable valve core, one end of the valve core can extend into the interior of the clamping head, and the valve core extends into the interior of the water injection channel to form a conducting or blocking structure.

3. The speaker cavity sealing test fixture according to claim 1, characterized in that: A clearance hole matching the clamping head is provided in the middle of the fixture mainboard, and a guide rail is provided on the edge of the clearance hole. The clamping head is movably arranged above the clearance hole through the guide rail.

4. The speaker cavity sealing test fixture according to claim 3, characterized in that: The sealing module also includes a clamping cylinder, the telescopic end of the clamping cylinder is fixedly connected to the clamping head, and the clamping head can move along the axial direction of the guide rail through the clamping cylinder.

5. The speaker cavity sealing test fixture according to claim 1, characterized in that: The edges of the lower die and the upper die are both provided with inlay grooves matching the clamping head, and a closed cavity can be formed between the clamping head and the lower die and the upper die.

6. A speaker cavity sealing test fixture according to any one of claims 1 to 5, characterized in that: A water tank is also provided at the bottom of the fixture mainboard, the interior of the water tank is a water storage cavity, the fixture mainboard cover is above the water storage cavity, and a control valve group is also provided on one side of the fixture mainboard, which is connected to the water injection channel through the pipe body.

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