CN107020856B - Diaphragm fixing structure - Google Patents

Abstract

The present invention provides a diaphragm fixing structure. The diaphragm fixing structure comprises a first diaphragm and a second diaphragm. The first diaphragm comprises a first diaphragm body and a first tongue, a first opening is formed inside the first diaphragm body, the first tongue is located in the first opening and has a first bottom edge connected to the first diaphragm body, and the first tongue extends from the first bottom edge along a first extension direction. The second diaphragm comprises a second diaphragm body and a second tongue, a second opening is formed inside the second diaphragm body, the second tongue is located in the second opening and has a second bottom edge connected to the second diaphragm body, and the second tongue extends from the second bottom edge along a second extension direction. The second extension direction is opposite to the first extension direction, and the second bottom edge is equal in length to the first bottom edge and is located at a corresponding position.

Description

Diaphragm fixed structure

technical field

The invention relates to a fixing structure, in particular to a membrane fixing structure.

Background technique

One of the common methods of binding documents is to use staples with a stapler. Its advantages include low cost and easy to use, etc. However, because the pins of the staples are exposed at the binding, it is not only easy to stab people's hands, but also may scratch other documents.

Another common method of binding documents is to use glue. Its cost is not high, but it is more troublesome to apply glue when binding, and it is easy to cause damage to the document when removing the binding.

Furthermore, whether the stapler is equipped with staples or bound with glue, when recycling or discarding, because the staples or glue need to be removed, additional time and procedures will be added, and the convenience of use and environmental protection need to be improved. .

Contents of the invention

In view of this, the object of the present invention is to provide a membrane fixing structure, which can fix the membrane without using nails or glue. In addition, when recycling or discarding, no extra time and procedures will be added due to the need to remove the needles or glue, so it has better convenience and environmental protection.

The diaphragm fixing structure of the present invention includes a first diaphragm and a second diaphragm. The first diaphragm includes a first diaphragm body and a first tongue. A first opening is formed inside the first diaphragm body. The first tongue is located in the first opening and has a first bottom edge connected to the first diaphragm body. , the first tongue extends from the first bottom edge along the first extending direction. The second diaphragm includes a second diaphragm body and a second tongue, a second opening is formed inside the second diaphragm body, the second tongue is located in the second opening and has a second bottom edge connected to the second diaphragm body , the second tongue extends from the second bottom edge along the second extending direction. The second extending direction is opposite to the first extending direction, and the second base is equal in length to the first base and located at a corresponding position. Wherein, the first tongue passes through the second opening and leans substantially toward the other side of the second diaphragm relative to the first diaphragm, and the second tongue passes through the first opening and substantially leans toward the opposite side of the first diaphragm. On the other side of the second membrane, the second membrane and the first membrane are thereby fixed to each other.

In an embodiment of the present invention, the first diaphragm further includes a third tongue, a third opening is further formed inside the first diaphragm body, the third tongue is located in the third opening and has a The third bottom edge, the third tongue extends from the third bottom edge along the third extension direction. The second diaphragm further includes a fourth tongue, a fourth opening is further formed inside the second diaphragm body, the fourth tongue is located in the fourth opening and has a fourth bottom edge connected to the second diaphragm body, the fourth tongue The sheet extends along the fourth extension direction from the fourth bottom edge, the fourth extension direction is opposite to the third extension direction, and the fourth bottom edge is equal in length to the third bottom edge. Wherein, the third tongue passes through the fourth opening and leans substantially toward the other side of the second diaphragm relative to the first diaphragm, and the fourth tongue passes through the third opening and leans substantially toward the opposite side of the first diaphragm. On the other side of the second membrane, the second membrane and the first membrane are thereby fixed to each other.

In an embodiment of the invention, the first extending direction is opposite to the third extending direction.

In an embodiment of the present invention, the first extending direction is the same as the third extending direction.

In the embodiment of the present invention, the first bottom edge extends along the first bottom edge direction, the third bottom edge extends along the third bottom edge direction, and the first bottom edge direction and the third bottom edge direction are the same. In an embodiment of the present invention, the median perpendiculars of the first base and the third base overlap.

In an embodiment of the present invention, the first bottom edge extends along the first bottom edge direction, the third bottom edge extends along the third bottom edge direction, and the first bottom edge direction and the third bottom edge direction are different.

In an embodiment of the present invention, the shape of the first tongue is different from that of the second tongue.

In the embodiment of the present invention, the first tongue is triangular.

In an embodiment of the present invention, the first diaphragm and the second diaphragm are curved surfaces.

In an embodiment of the present invention, the diaphragm fixing structure further includes a third diaphragm disposed between the first diaphragm and the second diaphragm, including the third diaphragm body and the fifth tongue, and the inside of the third diaphragm body A fifth opening is formed, the fifth tongue is located in the fifth opening and has a fifth bottom edge connected to the third diaphragm body, the fifth tongue extends from the fifth bottom edge along the first extending direction, and the fifth bottom edge is connected to the first extending direction. A bottom edge is equal in length and located at a corresponding position; wherein the second tongue passes through the fifth opening and leans substantially toward the other side of the first diaphragm relative to the second diaphragm, and the fifth tongue passes through the second The opening is substantially leaning against the other side of the second membrane relative to the first membrane, whereby the third membrane and the second membrane are fixed to each other.

In an embodiment of the present invention, the membrane fixing structure includes a plurality of first membranes and a plurality of second membranes. Each first diaphragm includes a first diaphragm body and a first tongue. A first opening is formed inside the first diaphragm body. The first tongue is located in the first opening and has a first bottom connected to the first diaphragm body. The first tongue piece extends from the first bottom edge along the first extending direction. Each second diaphragm includes a second diaphragm body and a second tongue. A second opening is formed inside the second diaphragm body. The second tongue is located in the second opening and has a second bottom connected to the second diaphragm body. The second tongue extends from the second bottom edge along the second extension direction, the second extension direction is opposite to the first extension direction, the second bottom edge is equal to the first bottom edge and is located at a corresponding position. Wherein the first tongues of the plurality of first diaphragms substantially overlap and pass through the second opening and substantially lean toward the other side of the second diaphragm relative to the first diaphragm, each of the plurality of second diaphragms The second tongue substantially overlaps and passes through the first opening and leans substantially toward the other side of the first diaphragm relative to the second diaphragm, thereby fixing the plurality of second diaphragms and the plurality of first diaphragms to each other .

Description of drawings

1A to 1C are schematic diagrams of embodiments of the present invention;

2A to 2E are schematic diagrams of embodiments in which the first diaphragm and the second diaphragm are fixed to each other in the present invention;

3 is a schematic diagram of an embodiment of the present invention where the first tongue and the third tongue extend toward the same direction;

Fig. 4 is a schematic diagram of an embodiment in which the first bottom edge and the third bottom edge of the present invention are not parallel;

Fig. 5 is a schematic diagram of an embodiment in which the first tongue of the present invention is a semicircle;

6 is a schematic diagram of an embodiment in which the first diaphragm and the second diaphragm of the present invention are curved surfaces;

7A to 7G are schematic diagrams of an embodiment in which the membrane fixing structure of the present invention is used to fix more than two membranes to each other;

Fig. 8 is a schematic diagram of an embodiment in which the second tongue and the fourth tongue are both arranged in the second opening of the present invention;

Fig. 9 is a schematic diagram of an embodiment in which the tongue of the present invention is provided with round guide notches at both ends of its bottom edge; and

FIG. 10 is a schematic diagram of an embodiment of the present invention with no space between the second tongue and the fourth tongue.

Description of main component symbols:

100 first diaphragm

110 The first diaphragm body

200 second diaphragm

210 Second Diaphragm Body

310 First tongue

311 First bottom edge

315 First base direction

320 Second tongue

321 second bottom edge

330 Third tongue

331 third bottom edge

335 Third base direction

340 Fourth tongue

341 fourth base

350 Fifth tongue

351 fifth base

390 round lead notch

410 First opening

420 second opening

430 Third opening

440 Fourth opening

450 fifth opening

510 First extension direction

520 Second extension direction

530 Third extension direction

540 Fourth extension direction

610 First folding direction

620 Second folding direction

700 Third diaphragm

710 The third diaphragm body

900 diaphragm fixed structure

d first distance

Detailed ways

The membrane fixing structure of the present invention is used to fix multiple membranes to each other. Wherein, the membrane includes a paper sheet, a plastic sheet or a metal sheet, which can be cut and bent into shape.

In the embodiment shown in FIGS. 1A and 1B , the membrane fixing structure 900 of the present invention includes a first membrane 100 and a second membrane 200 . The first diaphragm 100 includes a first diaphragm body 110 and a first tongue 310 . A first opening 410 is formed inside the first diaphragm body 110. The first tongue 310 is located in the first opening 410 and has a first bottom edge 311 connected to the first diaphragm body 110. The first tongue 310 is defined by the first bottom. The side 311 extends along the first extending direction 510 . The second diaphragm 200 includes a second diaphragm body 210 and a second tongue 320. A second opening 420 is formed inside the second diaphragm body 210. The second tongue 320 is located in the second opening 420 and has a The body 210 is connected to the second bottom edge 321 , and the second tongue 320 extends along the second extension direction 520 from the second bottom edge 321 . The second extending direction 520 is opposite to the first extending direction 510 , and the second base 321 is equal in length to the first base 311 and located at a corresponding position. In a preferred embodiment, the tongue is formed by directly cutting the diaphragm body, in other words, the tongue and the diaphragm body are integrally formed in a continuous structure. However, in different embodiments, an opening may be formed on the diaphragm body by cutting first, the tongue is disposed in the opening, and then the tongue is connected to the diaphragm body by bonding or welding.

In the embodiment shown in FIG. 1B , the first tongue 310 can be folded along the first bottom edge 311 toward the first folding direction 610 to expose the first opening 410 , and the second tongue 320 can be folded along the second bottom edge 321 . The second opening 420 is exposed by being folded toward the second folding direction 620 . The first folding direction 610 is opposite to the second folding direction 620 . In the embodiment shown in Figure 1C, the first diaphragm 100 and the second diaphragm 200 can be close to each other so that the first tongue 310 and the second tongue 320 pass through the second opening 420 and the first opening 410 respectively, the first After the tongue piece 310 and the second tongue piece 320 pass through the second opening 420 and the first opening 410 respectively, they can be folded toward the second folding direction 620 and the first folding direction 610 respectively so that the second diaphragm 200 and the second A diaphragm 100 is fixed to each other. More specifically, how to turn over the first tongue 310 and the second tongue 320, pass through the second opening 420 and the first opening 410, and then turn over to make the first diaphragm 100 and the second diaphragm 200 mutually For the fixing steps, please refer to the sectional views of the embodiment shown in FIGS. 2A to 2E .

2A, the first tongue 310 extends from the first bottom edge 311 along the first extension direction 510, the second tongue 320 extends from the second bottom edge 321 along the second extension direction 520, and the second extension The direction 520 is opposite to the first extension direction 510 . At this time, the first tongue 310 and the second tongue 320 are not folded away from the first diaphragm 100 and the second diaphragm 200 respectively. In other words, before using the membrane fixing structure of the present invention to fix the membranes, each membrane can be in a flat state, which can reduce the space required for storage.

In the embodiment shown in FIG. 2B , the first tongue 310 is folded along the first bottom edge 311 toward the first folding direction 610 to expose the first opening 410 , and the second tongue 320 is along the second bottom edge 321 toward the first opening 410 . The second folding direction 620 is reversed to expose the second opening 420 , and the first folding direction 610 is opposite to the second folding direction 620 . Furthermore, the first tongue piece 310 and the second tongue piece 320 are folded to face the second diaphragm 200 and the first diaphragm 100 respectively, and specifically, respectively face the second opening 420 and the first opening 410 .

2C and 2D, the first diaphragm 100 and the second diaphragm 200 can be close to each other so that the first tongue 310 and the second tongue 320 pass through the second opening 420 and the first opening 410 respectively, And specifically, pass through the second opening 420 close to the second bottom edge 321 and the first opening 410 close to the first bottom edge 311 respectively. Finally, the first tongue piece 310 and the second tongue piece 320 passing through the second opening 420 and the first opening 410 respectively can be folded toward the second folding direction 620 and the first folding direction 610 as shown in FIG. 2E The location of the example shown. More specifically, the first tongue 310 passes through the second opening 420 and leans substantially toward the other side of the second diaphragm 200 relative to the first diaphragm 100 , the second tongue 320 passes through the first opening 410 and Essentially leaning toward the other side of the first diaphragm 100 relative to the second diaphragm 200 . Because the first tongue piece 310 passes through the second diaphragm 200 substantially and is flat-pressed on its opposite side facing the first diaphragm 100, and the second tongue piece 320 passes through the first diaphragm 100 substantially and flat-presses on it. The opposite side facing the second membrane 200 , that is, a part of each of the first membrane 100 and the second membrane 200 actually passes through each other to achieve the effect of interlaced clamping. Thus, the first membrane 100 and the second membrane 200 can be fixed to each other without using nails or glue.

In the embodiment of the present invention, the fixing effect can be enhanced by increasing the number of tongue pieces. 1A to 1C, the first diaphragm 100 further includes a third tongue 330, the first diaphragm body 110 further forms a third opening 430, the third tongue 330 is located in the third opening 430 and It has a third bottom edge 331 connected to the first membrane body 110 , and the third tongue 330 extends from the third bottom edge 331 along the third extending direction 530 . The second diaphragm 200 further includes a fourth tongue 340 , and a fourth opening 440 is further formed inside the second diaphragm body 210 . Four bottom sides 341, the fourth tongue piece 340 extends from the fourth bottom side 341 along the fourth extension direction 540, the fourth extension direction 540 is opposite to the third extension direction 530, the fourth bottom side 341 is equal in length to the third bottom side 331 .

The third tongue 330 can be folded along the third bottom edge 331 toward the first folding direction 610 to expose the third opening 430 , and the fourth tongue 340 can be folded along the fourth bottom edge 341 toward the second folding direction 620 While exposing the fourth opening 440, the first diaphragm 100 and the second diaphragm 200 can be close to each other so that the third tongue 330 and the fourth tongue 340 pass through the fourth opening 440 and the third opening 430 respectively, and the third tongue After the sheet 330 and the fourth tongue 340 pass through the fourth opening 440 and the third opening 430 respectively, they can be folded toward the second folding direction 620 and the first folding direction 610 so that the second diaphragm 200 and the first The membranes 100 are fixed to each other. More specifically, the third tongue 330 passes through the fourth opening 440 and leans substantially toward the other side of the second diaphragm 200 relative to the first diaphragm 100 , the fourth tongue 340 passes through the third opening 430 and Essentially leaning toward the other side of the first diaphragm 100 relative to the second diaphragm 200 . For the steps of how to turn over the third tongue 330 and the fourth tongue 340, pass through the second opening 420 and the first opening 410, and then turn over to fix the first diaphragm 100 and the second diaphragm 200 to each other, please refer to Reference is made to the foregoing description regarding the embodiment shown in Figures 2A to 2E.

In the embodiment shown in FIGS. 1A to 1C , the first extending direction 510 is opposite to the third extending direction 530 , that is, the first tongue piece 310 and the third tongue piece 330 extend in opposite directions. However, in different embodiments, the extending directions of the first tongue piece 310 and the third tongue piece 330 can be set differently based on manufacturing or design requirements. For example, in the embodiment shown in FIG. 3 , the first extending direction 510 is the same as the third extending direction 530 , that is, the first tongue piece 310 and the third tongue piece 330 extend toward the same direction. At this time, the second tongue 320 and the fourth tongue 340 respectively corresponding to the first tongue 310 and the third tongue 330 also extend towards the same direction.

In the embodiment shown in FIGS. 1A to 1C, the first base 311 extends along the first base direction 315, the third base 331 extends along the third base direction 335, the first base direction 315 and the third base The edge directions 335 are the same. In other words, the first bottom edge 311 is parallel to the third bottom edge 331 . In these embodiments, the perpendicular lines of the first bottom edge 311 and the third bottom edge 331 further overlap, that is, the first tongue piece 310 and the third tongue piece 330 are actually opposite to each other on the same axis, The second tongue 320 and the fourth tongue 340 actually face each other on the same axis. However, in different embodiments, the extending directions of the first bottom edge 311 and the third bottom edge 331 can be set differently based on manufacturing or design requirements. For example, in the embodiment shown in FIG. 4 , the first bottom edge direction 315 and the third bottom edge direction 335 are different, that is, the first bottom edge 311 and the third bottom edge 331 are not parallel. Although the tongue piece 310 and the third tongue piece 330 also extend in opposite directions, they are not directly facing away from each other, but slightly angled. More specifically, the first tongue piece 310 and the second tongue piece 330 are not limited to being arranged in a front-to-back or front-to-back manner, so that the position of the tongue pieces is more flexible.

In the embodiment shown in FIGS. 1A to 1C , the first tongue piece 310 and the second tongue piece 320 are both triangular in shape. However, in different embodiments, the shapes of the first tongue 310 and the second tongue 320 may be different based on manufacturing or design requirements. For example, in the embodiment shown in FIG. 5 , the first tongue piece 310 is semicircular, while the second tongue piece 320 is still triangular.

In the embodiment shown in FIGS. 1A to 1C and 2A, the first diaphragm 100 and the second diaphragm 200 are planes. However, in different embodiments, the first diaphragm 100 and the second diaphragm 200 may have different configurations based on manufacturing or design requirements. For example, in the embodiment shown in FIG. 6 , the first diaphragm 100 and the second diaphragm 200 are curved surfaces.

In various embodiments, the membrane fixing structure of the present invention can be used to fix more than two membranes to each other. For example, in the embodiment shown in FIGS. 7A to 7C, the diaphragm fixing structure 900 further includes a third diaphragm 700 disposed between the first diaphragm 100 and the second diaphragm, including the third diaphragm body 710 and the fifth diaphragm body 710. Tongue piece 350, the fifth opening 450 is formed inside the third membrane body 710, the fifth tongue piece 350 is located in the fifth opening 450 and has a fifth bottom edge 351 connected with the third membrane body 710, the fifth tongue piece 350 Extends along the first extending direction 510 from the fifth bottom edge 351 . The fifth bottom edge 351 is equal in length to the first bottom edge 311 and is located at a corresponding position; wherein the second tongue piece 320 passes through the fifth opening 450 and leans substantially toward the gap between the first diaphragm 100 and the second diaphragm 200 On the other side, the fifth tongue 350 passes through the second opening 420 and leans substantially toward the other side of the second diaphragm 200 relative to the first diaphragm 100 , the third diaphragm 700 and the second diaphragm 200 thus fixed to each other. Furthermore, in the embodiment shown in FIG. 7D , each tongue piece is arranged at a specific position (for example, the center), and the mutually fixed membranes are folded in half with the tongue piece as the center to form a booklet. In other words, through the membrane fixing structure of the present invention, these membranes can be fixed to each other without using staples or glue through the interlaced clamping effect as described above, achieving "binding without using staples or glue" Effect. When the number of diaphragms increases, the length of the tongues can be correspondingly increased to maintain the effect of staggered clamping.

In different embodiments, the arrangement of multiple diaphragms is not limited to "one-to-many" (a single second diaphragm 200 on one side is opposed to a first diaphragm 100 on the other side) as shown in Figures 7A to 7C. and the third membrane 700), also according to the design or use requirements, the embodiment shown in Fig. 7E to 7G is "many to many". Further, viewed from different angles, the membrane fixing structure 900 includes a plurality of first membranes 100 and a plurality of second membranes 200 . Each first diaphragm 100 includes a first diaphragm body 110 and a first tongue 310. A first opening 410 is formed inside the first diaphragm body 100. The first tongue 310 is located in the first opening 410 and has a The sheet body 110 is connected to the first bottom edge 311 , and the first tongue 310 extends along the first extending direction 510 from the first bottom edge 311 . Each second diaphragm 200 includes a second diaphragm body 210 and a second tongue 320. A second opening 420 is formed inside the second diaphragm body 210. The second tongue 320 is located in the second opening 420 and has a The second bottom edge 321 connected to the sheet body 210, the second tongue 320 extends from the second bottom edge 321 along the second extension direction 520, the second extension direction 520 is opposite to the first extension direction 510, the second bottom edge 321 and the second extension direction 520 A bottom edge 311 has the same length and is located at a corresponding position. The first tongues 310 of the plurality of first diaphragms 100 substantially overlap and pass through the second opening 420 and substantially lean toward the other side of the second diaphragm 200 relative to the first diaphragm 100 . The second tongues 320 of the two diaphragms 200 substantially overlap and pass through the first opening 410 and substantially lean toward the other side of the first diaphragm 100 relative to the second diaphragm 200 . Multiple second diaphragms 200 And the plurality of first diaphragms 100 are thus fixed to each other.

In the embodiment shown in Figures 1A to 1C, the shape of the opening corresponds to the tongue. However, in different embodiments, the shape of the opening can be set differently based on manufacturing or design requirements. For example, in the embodiment shown in FIG. 8, the second tongue 320 and the fourth tongue 340 are all arranged in the second opening 420, and the second bottom edge 321 and the fourth bottom edge 341 are connected with the second diaphragm body respectively. 200 connections.

In the embodiment shown in FIG. 9 , the tongue can be provided with round guide notches 390 at both ends of its bottom edge, so as to reduce the tearing of the tongue at its bottom edge and the diaphragm body. In the embodiment shown in FIG. 9 , there is a first distance d between the second tongue 320 and the fourth tongue 340 . In different embodiments, the first distance d can be set differently based on manufacturing or design requirements. For example, in the embodiment shown in FIG. 10 , there is no space between the second tongue piece 320 and the fourth tongue piece 340 , that is, the first distance d is zero.

Although the foregoing description and accompanying drawings have disclosed preferred embodiments of the present invention, it must be understood that various additions, modifications and substitutions may be applied to the preferred embodiments of the present invention without departing from the scope of the appended application. spirit and scope of the principles of the invention. Those familiar with the art to which the invention pertains will appreciate that the invention can be employed with many modifications in form, structure, arrangement, proportion, material, element and assembly. Therefore, the embodiments disclosed herein should be regarded as illustrating the present invention rather than limiting the present invention. The scope of the present invention should be defined by the appended claims, including their legal equivalents, and not limited by the foregoing description.

Claims (11)

1. A membrane fixing structure, characterized in that, comprising: A first diaphragm, including a first diaphragm body and a first tongue, a first opening is formed inside the first diaphragm body, the first tongue is located in the first opening and has a a first bottom edge connected to the diaphragm body, and the first tongue extends from the first bottom edge along a first extending direction; A second diaphragm, including a second diaphragm body and a second tongue, a second opening is formed inside the second diaphragm body, the second tongue is located in the second opening and has a A second bottom edge connected to the diaphragm body, the second tongue extends from the second bottom edge along a second extension direction, the second extension direction is opposite to the first extension direction, the second bottom edge and the first extension direction One bottom edge is equal in length and located in a corresponding position; Wherein the first tongue passes through the second opening and leans substantially toward the other side of the second diaphragm relative to the first diaphragm, and the second tongue passes through the first opening and substantially leans toward The other side of the first membrane relative to the second membrane, the second membrane and the first membrane are thereby fixed to each other. 2. The diaphragm fixing structure according to claim 1, characterized in that, The first diaphragm further includes a third tongue, and a third opening is further formed inside the first diaphragm body, the third tongue is located in the third opening and has a connection with the first diaphragm body a third bottom edge, the third tongue extends from the third bottom edge along a third extending direction; The second diaphragm further includes a fourth tongue, and a fourth opening is further formed inside the second diaphragm body, the fourth tongue is located in the fourth opening and has a connection with the second diaphragm body The fourth bottom edge, the fourth tongue extends from the fourth bottom edge along a fourth extension direction, the fourth extension direction is opposite to the third extension direction, the fourth bottom edge is equal in length to the third bottom edge, The third bottom edge and the fourth bottom edge are located at corresponding positions; Wherein the third tongue passes through the fourth opening and leans substantially toward the other side of the second diaphragm relative to the first diaphragm, and the fourth tongue passes through the third opening and substantially leans toward The other side of the first membrane relative to the second membrane, the second membrane and the first membrane are thereby fixed to each other. 3. The membrane fixing structure according to claim 2, wherein the first extending direction is opposite to the third extending direction. 4. The membrane fixing structure according to claim 2, wherein the first extending direction is the same as the third extending direction. 5. The diaphragm fixing structure according to claim 2, wherein the first bottom edge extends along a first bottom edge direction, the third bottom edge extends along a third bottom edge direction, and the first bottom edge extends along a third bottom edge direction. and the third bottom edge are in the same direction. 6. The diaphragm fixing structure according to claim 2, wherein the first bottom edge extends along a first bottom edge direction, the third bottom edge extends along a third bottom edge direction, and the first bottom edge extends along a third bottom edge direction. and the direction of the third bottom edge are different. 7. The membrane fixing structure as claimed in claim 2, wherein the median perpendiculars of the first base and the third base overlap. 8. The membrane fixing structure according to claim 1, wherein the first tongue is triangular in shape. 9. The membrane fixing structure according to claim 1, wherein the first tongue is different from the second tongue in shape. 10. The membrane fixing structure according to claim 1, wherein the first membrane and the second membrane are curved surfaces. 11. The diaphragm fixing structure according to claim 1, further comprising a third diaphragm disposed between the first diaphragm and the second diaphragm, comprising a third diaphragm body and a The fifth tongue, a fifth opening is formed inside the third diaphragm body, the fifth tongue is located in the fifth opening and has a fifth bottom edge connected to the third diaphragm body, the fifth tongue The piece extends along the first extension direction from the fifth bottom edge, the fifth bottom edge is equal to the first bottom edge and is located at a corresponding position; wherein the second tongue piece passes through the fifth opening and leans substantially against To the other side of the first membrane relative to the second membrane, the fifth tongue passes through the second opening and leans substantially toward the other side of the second membrane relative to the first membrane, The third diaphragm and the second diaphragm are thereby fixed to each other.