A waterproof, dustproof and sound-permeable membrane structure suitable for automatic film pasting

Abstract

The utility model discloses a waterproof, dustproof and sound-transmitting membrane structure suitable for automatic film pasting, comprising: a release tape, a double-sided adhesive layer, a sound-transmitting membrane body, a single-sided adhesive, a spacer, and a structural protection sheet. Through the above method, the utility model discloses a waterproof, dustproof and sound-transmitting membrane structure suitable for automatic film pasting, and uses structures such as a spacer and a structural protection sheet to support and fix the sound-transmitting membrane, which is convenient for improving the accuracy of positioning the sound-transmitting membrane, and at the same time, improves the efficiency and quality of film pasting, reduces the damage rate of the sound-transmitting membrane during the film pasting process, and is conducive to improving the efficiency and stability of automatic film pasting.

Description

Technical Field

[0001] The utility model relates to the technical field of micro-electromechanical system (MEMS) loudspeakers, in particular to a waterproof, dustproof and sound-permeable membrane structure suitable for automatic film pasting. Background Art

[0002] The acoustically transparent membrane is one of the important components of MEMS and is generally installed on the port of electronic equipment to prevent water or other liquids from entering while ensuring sound transmission.

[0003] However, the existing MEMS SPEAKER sound-transmitting membrane is soft, thin and light, and the membrane pasting process is more complicated, which makes the membrane easily damaged during the pasting process. Therefore, the current sound-transmitting membrane structure often has problems such as difficulty in pasting, low efficiency and unstable quality. Utility Model Content

[0004] In order to solve the above technical problems, a technical solution adopted by the utility model is:

[0005] Provided is a waterproof, dustproof and sound-transmitting membrane structure suitable for automatic film pasting, comprising: a release tape, a double-sided adhesive layer, a sound-transmitting membrane body, a single-sided adhesive, a spacer, and a structural protection sheet.

[0006] The structural protection sheet is arranged on the upper surface of the sound-transmitting membrane body by means of a single-sided adhesive tape, a protruding ear is arranged at the edge of the structural protection sheet, and a pre-cut groove is arranged at the connection between the ear and the structural protection sheet, so that the ear can be bent along the pre-cut groove.

[0007] An upper cavity is arranged between the structural protection sheet and the sound-transmitting membrane body, the isolation sheet is arranged in the upper cavity and connected to the bottom surface of the structural protection sheet, the four sides of the bottom surface of the sound-transmitting membrane body are adhered to the release tape through a double-sided adhesive layer, and a lower cavity is arranged between the sound-transmitting membrane body and the release tape.

[0008] In a preferred embodiment of the present invention, single-sided adhesive for bonding the structural protection sheet is provided around the upper surface of the sound-transmitting membrane body.

[0009] In a preferred embodiment of the present invention, double-sided adhesive layers are provided on four sides of the bottom surface of the sound-transmitting membrane body.

[0010] In a preferred embodiment of the present invention, the structural protection sheet includes a PVC protection sheet or a PE protection sheet.

[0011] The beneficial effects of the utility model are as follows: the sound-transmitting membrane is supported and fixed by utilizing structures such as an isolation sheet and a structural protection sheet, thereby facilitating improving the accuracy of positioning the sound-transmitting membrane, and at the same time, improving the efficiency and quality of film pasting, and reducing the damage rate of the sound-transmitting membrane during the film pasting process, thereby facilitating improving the efficiency and stability of automated film pasting. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative work, among which:

[0013] Figure 1 This is a schematic structural diagram of a preferred embodiment of a waterproof, dustproof and sound-permeable membrane structure suitable for automatic film application according to the utility model;

[0014] Figure 2 This is a schematic cross-sectional view of a preferred embodiment of a waterproof, dustproof and sound-permeable membrane structure suitable for automatic film application according to the utility model.

[0015] Figure 3 It is a schematic diagram of a preferred embodiment of a waterproof, dustproof and sound-permeable membrane structure suitable for automatic film sticking according to the utility model. DETAILED DESCRIPTION

[0016] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. 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.

[0017] See also Figure 1-3 , the utility model embodiment includes:

[0018] A waterproof, dustproof and sound-transmitting membrane structure suitable for automatic film pasting includes: a release tape 10, a double-sided adhesive layer 20, a sound-transmitting membrane body 30, a single-sided adhesive 40, a spacer 50, and a structure protection sheet 60.

[0019] 1. The first layer of the structural protection sheet is used to protect the body of the sound-transmitting membrane and provide a certain support force during the peeling and film-pasting process to prevent the membrane from twisting and deforming. The structural protection sheet has single-sided adhesiveness and low peeling strength, which is convenient for peeling after the film is pasted; at the same time, it has a certain anti-bending strength, which is convenient for absorption and mounting during the film-pasting process.

[0020] A small ear 61 is designed on the edge of the structural protection sheet, and a pre-cut groove 62 is provided at the end of the small ear, so that the small ear can be easily bent along the pre-cut groove, and the small ear can be kept upright after the film is applied, which is convenient for the robot to peel off the film after the film is applied.

[0021] 2. The isolation sheet of the second layer is designed because the structural protection sheet is sticky on one side and the sound-transmitting membrane itself is very thin and soft. In order to prevent the sound-transmitting membrane body and the structural protection sheet from sticking together and causing damage to the sound-transmitting membrane, an isolation sheet is designed. One side of the isolation sheet is adhered to the structural protection sheet, and the isolation sheet is taken away at the same time when the structural protection sheet is peeled off.

[0022] 3. The single-sided adhesive of the third layer has a structural protection sheet attached to the non-adhesive side, and the other side with strong adhesion is bonded to the sound-transmitting membrane body. The single-sided adhesive (the base material can be polyimide) has waterproof and high temperature resistant properties.

[0023] 4. The sound-permeable membrane body of the fourth layer is waterproof and dustproof and has high temperature resistance. One side is pasted on the third layer, and the other side is used to be pasted on the fifth layer to achieve waterproof, dustproof and sound-permeable functions.

[0024] 5. The double-sided adhesive layer of the fifth layer has one side for bonding the sound-transmitting membrane body and the other side for bonding with the release tape, which is convenient for transmission and positioning in the automated film laminating process. The double-sided adhesive layer has strong adhesion and high temperature resistance.

[0025] 6. The release tape of the sixth layer, the entire sound-permeable membrane structure is distributed on the release tape at certain intervals, the tape is non-sticky and is only for the convenience of equipment transmission and positioning.

[0026] In the present application, the film laminating process of the waterproof and dustproof sound-transmitting membrane structure is as follows: the release tape (hereinafter referred to as the material tape 1) carrying the sound-transmitting membrane body is connected to the reel 80 of the material tape feeding machine, and the material tape is driven to move on the feeding platform 70 of the feeding machine through the rotation of the reel. When it moves to the top edge of the feeding platform, since the top edge angle is greater than 90 degrees, the entire sound-transmitting membrane is supported by the structural protection sheet and does not deform, and will not be peeled off automatically with the bending of the material tape. When the sound-transmitting membrane is peeled off by more than 2 / 3 (the peeling ratio is determined by the actual adhesive layer viscosity. If it is peeled off too little, it still has a large viscosity and is not suitable for absorption. Complete peeling will result in the inability to position ), the vacuum suction structure 100 of the loader moves to the top of the sound-transmitting membrane and gently contacts the structural protection sheet, and completely peels off the sound-transmitting membrane from the release tape by vacuum suction (when peeling, it can be translated to the temporary storage platform 90 next to the loading platform, and the surface of the temporary storage platform is coated with a non-stick layer such as Teflon, so that the peeled adhesive layer will not stick to the 90 structure), and moves to the top of the protective cover to be pasted through the moving mechanism and slowly descends until the adhesive layer is completely in contact with the protective cover and the small ears are completely erected due to the squeeze of the edge of the product. The equipment switches the robot arm to clamp the small ears of the protective sheet to peel off the protective sheet and the isolation sheet, and a film pasting is completed.

[0027] The utility model has the beneficial effects of a waterproof, dustproof and sound-permeable membrane structure suitable for automatic film pasting: the sound-permeable membrane is supported and fixed by utilizing structures such as an isolation sheet and a structural protection sheet, so as to improve the accuracy of positioning the sound-permeable membrane, and at the same time, improve the efficiency and quality of film pasting, and reduce the damage rate of the sound-permeable membrane during the film pasting process, which is beneficial to improving the efficiency and stability of automatic film pasting.

[0028] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A waterproof, dustproof and sound-permeable membrane structure suitable for automatic film application, characterized in that: include: Release tape, double-sided adhesive layer, sound-transmitting membrane body, single-sided adhesive, isolation sheet, structural protection sheet, The structural protection sheet is arranged on the upper surface of the sound-transmitting membrane body by means of a single-sided adhesive tape, a protruding ear is arranged at the edge of the structural protection sheet, and a pre-cut groove is arranged at the connection between the ear and the structural protection sheet, so that the ear can be bent along the pre-cut groove. An upper cavity is arranged between the structural protection sheet and the sound-transmitting membrane body, the isolation sheet is arranged in the upper cavity and connected to the bottom surface of the structural protection sheet, the four sides of the bottom surface of the sound-transmitting membrane body are adhered to the release tape through a double-sided adhesive layer, and a lower cavity is arranged between the sound-transmitting membrane body and the release tape.

2. A waterproof, dustproof and sound-permeable membrane structure suitable for automatic film application according to claim 1, characterized in that: Single-sided adhesive for bonding the structural protection sheet is arranged around the upper surface of the sound-transmitting membrane body.

3. The waterproof, dustproof and sound-permeable membrane structure suitable for automatic film application according to claim 1, characterized in that: Double-sided adhesive layers are arranged on the four sides of the bottom surface of the sound-transmitting membrane body.

4. The waterproof, dustproof and sound-permeable membrane structure suitable for automatic film application according to claim 1, characterized in that: The structural protection sheet includes a PVC protection sheet or a PE protection sheet.

Images