CN106954145A - A diaphragm mechanism applied to a receiver - Google Patents

Abstract

The present invention discloses a kind of vibrating diaphragm mechanism applied to receiver, including fixed frame, reed and sound film.Fixed frame has hollow lumen；Reed one end is connected for root side by fixing end with fixed frame, and gap is formed between other sides and fixed frame, and is vacantly arranged in hollow lumen；Vibration frequency of the edge shape of the side in reed correspondence gap according to needed for reed is determined；Reed is done of reciprocating vibration by the driving of electromagnetic mechanism；Sound film is fixed on fixed frame and is covered on reed；The gas channel between fixed frame and the upper and lower surface of reed formed with seal clearance.Vibration frequency according to needed for reed determines that reed corresponds to the edge shape of the side in gap, namely the edge shape of the free end relative with fixing end on reed is changed, vibration frequency during changing reed vibration needed for high pitch, so that reed is shifted with air resonance point, so as to improve the high frequency performance of receiver.

Description

A diaphragm mechanism applied to a receiver

technical field

The invention relates to the technical field of receivers, in particular to a diaphragm mechanism applied to receivers.

Background technique

The receiver is an electroacoustic device that converts audio electrical signals into audio signals without sound leakage. It is widely used in communication terminal equipment such as mobile phones, fixed phones, and earphones to realize audio output.

With the continuous development of mobile devices, people have higher and higher requirements for the quality of receivers, such as the requirements for low-frequency performance of receivers. A receiver with good low-frequency performance disclosed in Chinese patent document CN204498334U includes a shell, which is horizontally installed on the shell The flapping mechanism in the body divides the shell into two cavities vertically. The vibrating wing mechanism includes a fixed frame, a vibrating piece and a sound film. The sound film is first fixed on the fixed frame, and then the vibrating piece is fixed on the sound film. The vibrating piece and the fixed frame are located on both sides of the sound film. A sound-emitting cavity is formed between the top surfaces; the flapping mechanism is driven by a separately set reed to vibrate.

For the receiver with this structure, a hole with a diameter of 0.007mm-0.017mm is opened on the sound membrane in the flapping mechanism. The flow of air in the sound chamber improves the low-frequency performance of the receiver, but does not improve the high-frequency performance corresponding to its treble; at the same time, the flapping mechanism also needs to be driven by a separate reed, so there are many parts in the receiver, resulting in a complicated structure , the defects of inconvenient installation and high thickness of the receiver.

Contents of the invention

Therefore, the technical problem to be solved by the present invention is to overcome the problem that the diaphragm mechanism of the receiver in the prior art can only improve the low-frequency performance of the bass, but cannot improve the high-frequency performance of the diaphragm mechanism.

For this reason, the present invention provides a kind of diaphragm mechanism that is applied to receiver, comprises

The fixed frame has a hollow inner cavity;

A reed, one end of which is the root side is connected to the fixed frame through a fixed end, and a gap is formed between the other sides and the fixed frame, and is suspended in the hollow cavity; the reed corresponds to the gap of the gap. The edge shape of the side is determined according to the vibration frequency required by the reed; the reed is driven by the electromagnetic mechanism to reciprocate and vibrate;

The sound membrane is fixed on the fixed frame and covered on the reed; the airflow channel formed between the fixed frame and the upper and lower surfaces of the reed is formed by sealing the gap.

Preferably, in the above-mentioned diaphragm mechanism applied to a receiver, the edge shape is such that the end of the free end of the reed opposite to the fixed end has at least one notch.

Further preferably, in the above-mentioned diaphragm mechanism applied to a receiver, there are two missing corners, and the ends of the suspended ends are trapezoidal or triangular.

Preferably, in the above-mentioned diaphragm mechanism applied to a receiver, at least one treble hole is opened on the suspended end of the reed opposite to the fixed end, and in the direction perpendicular to the root side of the reed, the The tweeter holes are distributed in the range of 2/3-1 of the length of the reed from the fixed end.

Further preferably, in the above-mentioned diaphragm mechanism applied to a receiver, at least one bass hole is opened on the fixed end of the reed, and in the direction perpendicular to the root side of the reed, the bass holes are distributed from Within the range of 1/3 of the length of the reed from the fixed end, the diameter of the bass hole is larger than the diameter of the treble hole.

More preferably, in the above-mentioned diaphragm mechanism applied to a receiver, at least one mid-tone hole is opened on the reed, and in the direction perpendicular to the root side of the reed, the mid-tone holes are distributed from The range of 1/3-2/3 of the length of the reed from the fixed end.

Further preferably, in the above-mentioned diaphragm mechanism applied to a receiver, the diameter of the middle sound hole is larger than the diameter of the tweeter hole and smaller than the diameter of the bass hole.

Preferably, in the above-mentioned diaphragm mechanism applied to the receiver, the diameter of the bass hole is 0.1mm-1mm;

The diameter of the middle tone hole is 0.01mm-0.1mm; the diameter of the tweeter hole is 0.003mm-0.01mm.

Preferably, in the above-mentioned diaphragm mechanism applied to a receiver, on the reed, the end of the notch facing the fixed end is located in the region of the reed where the treble hole is located.

Preferably, the fixed end of the reed is provided with an elongated hole extending along the root side.

Preferably, in the above-mentioned diaphragm mechanism applied to a receiver, at least one notch recessed inward is provided on the side of the reed perpendicular to the root side.

Preferably, in the above-mentioned diaphragm mechanism applied to the receiver, a thin metal sheet is provided on the surface of the reed facing away from the sound diaphragm, and the elasticity of the thin metal sheet is greater than that of the reed, and its The thickness is smaller than that of the reed.

Preferably, in the above-mentioned diaphragm mechanism applied to a receiver, the thickness of the reed gradually increases from the suspended end to the other end away from the suspended end; and/or

The elasticity of the suspended end is greater than that of the fixed end.

The technical solution of the present invention has the following advantages:

1. The diaphragm mechanism applied to the receiver provided by the present invention includes a fixed frame, a reed and a sound diaphragm. The fixed frame has a hollow inner cavity; one end of the reed is connected to the fixed frame through the fixed end at the root side, and a gap is formed between the other sides and the fixed frame, and is suspended in the hollow inner cavity; the spring The edge shape of the side of the sheet corresponding to the gap is determined according to the required vibration frequency of the reed; the reed is driven by the electromagnetic mechanism to vibrate reciprocatingly; the sound membrane is fixed on the fixed frame and covered on the reed ; An air flow channel formed between the fixed frame and the upper and lower surfaces of the reed by sealing the gap.

The diaphragm mechanism of this structure determines the edge shape of the side of the reed corresponding to the gap according to the required vibration frequency of the reed, that is, changes the edge shape of the free end of the reed opposite to the fixed end to change the shape of the reed. The vibration frequency required for treble when the reed vibrates makes the resonance point between the reed and the air shift, thereby improving the high-frequency performance of the receiver. However, there are no holes on the sound membrane. After the sound membrane is fixed on the fixed frame, the sound membrane can isolate the sound-emitting cavity in the receiver from the installation cavity, and the gas in the two cavities will not be connected to ensure the sound output. The sealing performance of the acoustic cavity. In addition, the reed and the vibrating piece are combined into one, no need to set up a separate conductive rod, only the electromagnetic drive mechanism directly drives the reed to vibrate. Before the diaphragm mechanism is installed on the receiver, the sound film is pre-fixed on the fixed frame. The diaphragm mechanism as a whole can be installed on the shell of the receiver only through the fixing frame, thus simplifying the installation process of the receiver.

2. In the diaphragm mechanism applied to a receiver provided by the present invention, the shape of the edge is that the end of the free end of the reed opposite to the fixed end has at least one notch. The design of the cutaway makes the length of the reed constant, the smaller the width of the free end of the reed, the higher the vibration frequency of the reed, which is more conducive to improving the high-frequency performance.

3. In the diaphragm mechanism applied to the receiver provided by the present invention, at least one treble hole is opened on the suspended end opposite to the fixed end on the reed, and in the direction perpendicular to the root side of the reed, The tweeter holes are distributed in the range of 2/3-1 of the length of the reed from the fixed end. The diaphragm mechanism of this structure opens a treble hole at the treble sounding position of the reed to change the vibration frequency of the reed material itself, so that the resonance point of the reed and air resonance is transferred, and the treble vibration frequency is adjusted. To improve the high-frequency performance of the receiver.

4. In the diaphragm mechanism applied to the receiver provided by the present invention, at least one bass hole is provided on the fixed end of the reed, and in the direction perpendicular to the root side of the reed, the bass holes are distributed on the Within the range of 1/3 of the length of the reed from the fixed end, the diameter of the bass hole is larger than the diameter of the treble hole. Open the bass hole to change the vibration frequency of the reed material itself, so that the resonant point of the reed and air resonance is shifted to adjust the vibration frequency of the bass, thereby improving the low-frequency performance of the receiver.

Description of drawings

In order to more clearly illustrate the specific implementation of the present invention or the technical solutions in the prior art, the following will briefly introduce the accompanying drawings that need to be used in the specific implementation or description of the prior art. Obviously, the accompanying drawings in the following description The drawings show some implementations of the present invention, and those skilled in the art can obtain other drawings based on these drawings without any creative work.

Fig. 1 is the schematic plan view of the fixed frame and the reed in the diaphragm mechanism applied to the receiver provided by the present invention (the reed and the fixed frame are integrally formed);

Fig. 2 is the three-dimensional structure schematic diagram (looking up direction) of diaphragm mechanism in Fig. 1;

Fig. 3 is a top view structural schematic diagram of the diaphragm mechanism in Fig. 1 (the sound diaphragm is fixed on the top surface of the fixed frame, covering the reed and the fixed frame);

Fig. 4 is the second structural schematic view of the fixed frame and the reed used in the receiver diaphragm mechanism provided by the present invention;

5 is a schematic diagram of the third structure of the fixed frame and the reed in the diaphragm mechanism provided by the present invention;

Fig. 6 is a schematic diagram of the assembly of the fixed frame and the reed in the diaphragm mechanism provided by the present invention;

Fig. 7 is a structural schematic diagram of a thin metal sheet provided on the reed in the diaphragm mechanism provided by the present invention;

Explanation of reference signs: 1-fixed frame; 2-reed; 21-fixed end; 211-long hole; 22-hanging end; ; 26-treble hole; 3-sound film; 4-magnet; 5-gap; 6-metal sheet.

detailed description

The technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Apparently, the described embodiments are some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, or in a specific orientation. construction and operation, therefore, should not be construed as limiting the invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and should not be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that unless otherwise specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection. Connected, or integrally connected; it can be mechanically connected or electrically connected; it can be directly connected or indirectly connected through an intermediary, and it can be the internal communication of two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention in specific situations.

In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as there is no conflict with each other.

Example 1

This embodiment provides a diaphragm mechanism applied to a receiver, as shown in FIGS. 1 to 3 , including a fixed frame 1 , a reed 2 and a sound diaphragm 3 . Wherein, the fixed frame 1 has a hollow inner cavity.

The reed 2 is made of magnetically conductive material, such as iron-nickel alloy, as shown in Figure 1, one end of the reed 2 is the root side and is connected to the fixed frame 1 through the fixed end 21, and there is a gap between the other sides and the fixed frame 1 5, while the suspension is arranged in the hollow inner cavity, the end opposite to the fixed end 21 on the reed 2 is a suspension end 22, and the suspension end 22 is driven by the electromagnetic mechanism to reciprocate and vibrate; as shown in Figure 3, the sound membrane 3 is completely Attached to the entire fixed frame 1 and covered on the reed 2 to seal the air flow passage between the upper and lower surfaces of the fixed frame 1 and the reed 2 formed by the gap 5 . For example, glue is provided on one side of the sound membrane 3 at positions corresponding to the fixed frame 1 and the reed 2 , and the sound membrane 3 is fixed on the fixed frame 1 and the reed 2 through the glue. That is to say, the sound membrane 3 seals the gap 5 between the fixed frame 1 and the reed 2, the sound membrane 3 does not have any structural holes, and the gas on one side of the fixed frame 1 cannot pass through the sound membrane 3 to the other side. in the side space.

The shape of the edge of the side of the reed 2 corresponding to the gap 5 is determined according to the required vibration frequency of the reed 2 to improve the treble performance of the vibration of the reed 2 . As shown in FIG. 3 , the edge shape of the side of the reed 2 is two missing corners 221 at the end of the free end 22 of the reed, and the end of the free end 22 is trapezoidal. For the reed 2, under the premise that the length of the reed 2 is constant, the smaller the width of the free end 22 is, the easier the free end 22 vibrates and the higher the vibration frequency is, and the better the high frequency performance of the reed 2 is improved. That is, the vibration frequency of the reed 2 itself is changed, so that the resonance point between the reed 2 and the air is shifted, thereby improving the high-frequency performance of the reed 2 vibration. Optimally, the two missing corners 221 make the end of the free end 22 of the reed 2 triangular or tapered. If it is only necessary to slightly improve the high-frequency performance of the vibration of the reed 2 , the areas of the two notch corners 221 can be reduced, or only one notch corner 221 can be provided.

As shown in Figure 1, six high-pitched holes 26 are provided on the suspended end 22 of the reed 2, and on the direction of the vertical root side of the reed 2, the high-pitched holes 26 are distributed in 2 of the length of the reed 2 from the fixed end 21. /3-1 range. For example, the caliber of the tweeter hole 26 is within the range of 0.003mm-0.01mm, such as 0.003mm, 0.004mm, 0.005mm, 0.006mm, 0.007mm, 0.008mm, 0.009mm, 0.01mm, etc. In this range, the tweeter hole The smaller the caliber of 26, the higher the vibration frequency of the reed 2, and the better the audio performance of the treble is improved. However, when the caliber of the treble hole 26 is less than 0.003mm, the degree of improvement of the treble is still at the level of the 0.003mm diameter of the treble hole 26. At this time, after the caliber is reduced again, it exceeds the polarity value of the treble pushing energy. Even if the caliber is further reduced, the treble will not be further improved. This is related to the performance of the material and structure of the reed 2 itself. . Of course, the diameter of the treble hole 26 can be designed to be greater than 0.01mm, and the degree of improving the treble is very weak at this time, and the treble will hardly be further improved. In a word, the setting of the treble hole 26 can further improve the high-frequency performance of the treble without changing the length of the reed 2 .

For the reed, when the width of the reed 2 is constant, the smaller the length of the reed 2, the better the improvement performance of the bass, in order not to affect the high frequency performance, the present embodiment does not reduce the length of the reed 2 Under the premise of the reed 2, the mid-sound hole 25 and the bass hole 24 are set on the reed 2 to improve the mid-frequency performance and low-frequency performance of the reed vibration. Open any hole structure.

As shown in Figure 1, two bass holes 24 are provided on the fixed end 21 of the reed 2, and on the direction of the vertical root side of the reed 2 (the direction indicated by the arrow in Figure 1), the bass holes 24 are distributed from the fixed end 21 In the 1/3 range of the reed 2 lengths that have been raised. The caliber of bass hole 24 is greater than the caliber of treble hole, and the caliber of bass hole is generally controlled in the scope of 0.1mm-1mm, such as 0.1mm, 0.12mm, 0.13mm, 0.14mm, 0.2mm, 0.3mm, 0.4mm, 0.5mm, 0.6mm, 0.7mm, 0.8mm, 0.9mm, 1mm, etc. Of course, the diameter of the bass hole 24 can also be smaller than 0.1mm, which can also improve the low-frequency performance, but the improvement effect is weak; the diameter of the bass hole 24 can also be greater than 1mm , but when the diameter of the bass hole 24 is greater than 1 mm, the degree of improvement of the low-frequency performance is the same as that of the bass hole 24 when the diameter is 1 mm, because when the diameter of the bass hole 24 exceeds 1 mm, it exceeds the limit range of bass push energy, even if Increasing the caliber will no longer further improve the bass. When the diameter of the bass hole 24 is in the range of 0.1mm-1mm, the larger the diameter of the bass hole 24, the smaller the vibration frequency of the reed 2 and the better the bass quality. Two bass holes 24 can be evenly distributed on the fixed end 21 of reed 2, also can not be uniform distribution, the even distribution of bass holes 24 makes the more regularity of bass improvement; vibration frequency, making the bass quality richer and fuller.

As shown in Figure 1, four mid-tone holes 25 are also provided on the reed 2, and on the direction of the vertical root side of the reed 2, the mid-tone holes 25 are distributed in 1/1 of the length of the reed 2 from the fixed end 21. In the range of 3-2/3; the caliber of the middle tone hole 25 is greater than the caliber of the treble hole 26, and smaller than the caliber of the bass hole 24. Generally, the diameter of the midrange hole 25 is controlled within the range of 0.01mm-0.1mm, such as 0.01mm, 0.02mm, 0.03mm, 0.04mm, 0.05mm, 0.06mm, 0.07mm, 0.08mm, 0.09mm, 0.1mm, etc. Within this range, when the caliber of the mid-tone hole 25 tends toward the middle value, the frequency of its vibration is higher, and the mid-frequency performance is improved better, and the caliber of the mid-tone hole 25 is closer to two edge values (0.01mm or 0.1mm), the lower the vibration frequency, the weaker the effect of improving the midrange, but there is still an improvement effect.

The above-mentioned mid-sound holes 25 or treble holes 26 may also be distributed uniformly or unevenly on the reed 2 . When the mid-sound holes 25 or treble holes 26 are evenly distributed, the improved mid-frequency performance or high-frequency performance is more regular; when the mid-sound holes 25 or tweeter holes 26 are unevenly distributed, the improved mid-frequency or high-frequency range is wider , the sound produced is richer and fuller.

Above-mentioned reed 2 starts from its fixed end 21, along the direction of vertical reed 2 root side, reed 2 is divided into three areas equally, is respectively bass area, mid-range area and treble area, respectively in these three areas. Bass hole 24, middle sound hole 25 and treble hole 26 are set up on the area to change the vibration frequency of reed 2 itself, and then change the low frequency performance, intermediate frequency performance and high frequency performance of reed 2 vibrations, and the caliber size of each hole Do the design so that the calibers of the bass hole 24, the middle sound hole 25 and the treble hole 26 are within the effective range, and the low-frequency performance, mid-frequency performance and high-frequency performance of the reed 2 vibration are improved to the greatest extent, thereby improving the bass and mid-range of the receiver And treble, so that the quality of the receiver sound is better, the sound is more beautiful and full. One end of the notch 221 on the free end 22 towards the fixed end 21 is located in the area where the treble hole 26 is located. With the cooperation of the notch 221 and the treble hole 26, the treble performance can be further improved, so that the treble from the receiver is richer and more beautiful.

The shape of the above-mentioned bass hole 24 , mid-tone hole 25 and treble hole 26 is preferably a circular hole, which is convenient for processing and preparing the above-mentioned bass hole 24 , mid-tone hole 25 and treble hole 26 on the reed 2 .

As shown in Figure 2, the thickness of the reed 2 is flush with the thickness of the fixed frame 1, which is convenient to prepare the fixed frame 1 and the reed 2 in an integral molding manner, and the reed 2 and other side plates of the fixed frame 1 are pre-prepared. The width of the remaining gap 5 is generally controlled at 0.1mm-0.5mm, such as 0.1mm, 0.2mm, 0.3mm, 0.4mm, 0.5mm and so on. Preferably, the shape of the fixing frame 1 is a rectangular frame, and the corresponding spring 2 is a rectangular plate; or as shown in FIG. 5 , the shape of the fixing frame 1 is a circular frame, and the corresponding spring 2 is a circular plate.

The above-mentioned sound membrane 3 is made of elastic metal material, such as beryllium bronze. Or it can also be made of non-metallic material, such as plastic.

Corresponding to the gap 5 between the fixed frame 1 and the reed 2 , the acoustic membrane 3 is formed with a corresponding first protrusion along the gap 5 , and the first protrusion protrudes toward the fixing surface facing away from the acoustic membrane 3 . For example, the sound membrane 3 is fixed on the bottom surface of the fixed frame 1 , then the first protrusion protrudes downward and is located below the bottom surface of the fixed frame 1 . As another example, when the sound membrane 3 is fixed on the top surface of the fixed frame 1, the first protrusion protrudes upwards, and the two fixing methods of the sound membrane 3 make the first protrusion not in the gap 5, increasing the sound membrane 3. The amount of agitated air, thereby changing the sound of the receiver.

For the material of the fixed frame 1, the material of the fixed frame 1 can be the same as that of the reed 2, for example, they are all magnetically conductive materials, which are convenient to adopt an integral molding method, and only need to open the above-mentioned gap 5 on the plate, and then The structure of the fixing frame 1 and the reed 2 is prepared.

As shown in Figure 4 and Figure 6, on the side of the vertical root side of the reed 2, there are two notches 23 recessed inward, and the notch 23 changes the stiffness of the reed 2, that is, the vibration elasticity, so that the reed 2 It is easier to vibrate and improve the sensitivity of reed 2 vibration. Preferably, the notches 23 are provided on both sides of the fixing part close to the reed 2 .

As shown in Figure 4, the fixed end 21 of the reed 2 is provided with an elongated hole 211 extending along the root side, the setting of the elongated hole 211 reduces the fixed point between the fixed frame 1 and the reed 2, and increases the size of the spring. The stiffness of the sheet 2 reduces the electromagnetic force required for the vibration of the reed 2, thereby changing the frequency response frequency of the sound membrane 33 agitating the air to make a sound.

As shown in FIG. 7 , a metal sheet 6 is provided on the surface of the reed 2 facing away from the sound membrane 4 . The elasticity of the metal sheet 6 is greater than that of the reed 2 , and its thickness is smaller than that of the reed 2 . The metal sheet 6 is preferably made of a non-magnetic material, such as stainless steel, copper, plastic, aluminum, etc., to increase the vibration elasticity of the reed, so that the reed 2 vibrates more easily and has better vibration sensitivity.

The diaphragm mechanism in this embodiment determines the area occupied by the notch 221 at the edge of the side edge of the reed 2 corresponding to the gap according to the required vibration frequency of the reed 2, so as to change the treble required when the reed 2 vibrates. The vibration frequency of the reed 2 shifts the resonance point of the air, thereby improving the high-frequency performance of the receiver. And do not offer any hole on the sound membrane 3, after the sound membrane 3 is fixed on the fixed frame 1, the sound membrane 3 can isolate the sounding cavity in the receiver from the installation cavity, and the gas in the two cavities will not Connected to ensure the sealing performance of the sound cavity. In addition, the existing reed and vibrating piece are combined into one, no need to set up a separate conduction rod, only the electromagnetic drive mechanism directly drives the reed 2 to vibrate, and the diaphragm mechanism is pre-fixed before the diaphragm mechanism is installed on the receiver On the fixed frame 1, the diaphragm mechanism as a whole can be installed on the shell of the receiver only through the fixed frame 1, thereby simplifying the installation process of the receiver.

As an alternative embodiment, the reed 2 can also be made of a non-magnetic material, such as beryllium copper alloy, single copper, single aluminum, etc. A magnet 4 is arranged on the side surface, such as a magnet, and the electromagnetic drive mechanism drives the reed 2 to vibrate by driving the magnet 4 to generate sound. The number of magnets 4 can be one, two, or three, etc., and the specific number can be determined according to actual needs.

As a modification, the shape of the above-mentioned bass hole 24, the middle sound hole 25 and the treble hole 26 can also be a square hole, a tapered hole, or holes of other shapes, such as polygonal holes. The shapes of the three types of holes can be the same or different. The same, depending on the actual usage.

As an alternative embodiment, the acoustic membrane 3 can also be made of non-metallic material, such as plastic. As a modification, the thickness of the reed 2 is smaller than that of the fixed frame 1, and the fixed frame 1 only needs to play a role of fixing and supporting, and the smaller the thickness of the reed 2, the easier it is to vibrate.

As an alternative embodiment, the fixed frame 1 and the reed 2 can also be in other shapes, for example, the fixed frame 1 is a circle, and the reed 2 is a regular polygon, such as a hexagon, an octagon, or a quadrangle; or a rhombus , or trapezoidal, etc., the shape of the fixed frame 1 and the reed 2 can be designed according to the actual needs of customers.

As an alternative embodiment, the first protrusion on the sound membrane 3 can also be embedded in the gap 5 between the fixed frame 1 and the reed 2 . As a modification, the first protrusion may not be provided, and the sound membrane 3 is a flat membrane, as long as it has elasticity, and when the reed 2 vibrates, it can drive the sound membrane 3 to agitate the air to vibrate and produce sound.

As a modification, for the reed 2 itself, the thickness of the reed 2 can also gradually increase from its free end 22 to the fixed end 21. Under the same electromagnetic driving force, the thinner the free end 22, the easier it is to vibrate. , the higher the frequency of vibration, it is beneficial to improve the treble part of the receiver; while the fixed end 21 has a large vibration amplitude, but a small vibration frequency, which is beneficial to improve its bass part. Or, different materials are used to prepare the reed 2, so that the elasticity of the free end 22 of the reed 2 is greater than that of the fixed end 21, thereby improving the treble part of the reed 2 free end 22 and the bass part at the fixed end 21.

As an alternative embodiment, as shown in FIG. 6 , the material of the fixed frame 1 can also be different from that of the reed 2 , such as the reed 2 is a magnetically conductive material, while the fixed frame 1 is made of an alloy material, such as stainless steel. At this time, the reed 2 and the fixed frame 1 need to be manufactured separately, and finally the reed 2 is installed in the fixed frame 1 to form a combination of the fixed frame 1 and the reed 2 . For example, a connecting end is molded on the fixed end 21 of the reed 2, and the reed 2 is fixedly connected with the fixed frame 1 by matching the connecting end with the groove provided on the inner wall surface of the fixed frame 1; A piece, the fixed end 21 of the reed 2 is connected with the fixed frame 1.

As an alternative embodiment, multiple notches 23 can also be provided on the two side walls of the reed 2, such as three, four, five, etc., or only one notch can be provided on the side wall of the reed 2. twenty three. As a modification, the above-mentioned notch 23 may not be provided on the side wall surface of the reed 2 . As a modification, the above-mentioned elongated hole 211 may not be provided on the fixed end 21 .

As an alternative embodiment, the number of bass holes 24 can also be one, three, four, five, etc., only need to offer at least one bass hole 24 on the bass region of the reed 2 to change the reed 2 low-frequency performance. Similarly, the number of the mid-tone hole 25 can also be one, two, three, five, six, seven or the like, only need to offer at least one mid-tone hole on the mid-tone region of the reed 2 25; the number of treble holes 26 can also be one, two, three, four, five, seven, eight or the like, only need to offer at least one treble hole on the treble area of reed 2 26 is enough.

As an alternative embodiment, the reed 2 can also not be provided with the above-mentioned mid-tone hole 25, but the above-mentioned treble hole 26 and the bass hole 24; Bass hole 24, or mid-tone hole 25, or treble hole 26 are provided. As a further modification, the above-mentioned bass hole 24 , mid-tone hole 25 and treble hole 26 may not be provided.

As an alternative embodiment, the above-mentioned thin metal sheet 6 may not be provided, and the reed 2 may be made of a magnetically permeable material with better stiffness or elasticity to increase the vibration elasticity of the reed.

As an alternative embodiment, the shape of the notch 221 can also be other shapes, for example, the shape of the notch is quadrangle, pentagon, hexagon, etc., or other irregular figures.

As a further deformation, the shape of the edge of the side of the reed 2 corresponding to the gap 5 can also be other shapes, such as opening a V-shaped opening on the end of the free end 22, or opening an irregular opening. , just keep the length of the reed 2 constant, reduce the width of the reed 2 to change the treble vibration frequency of the reed, or determine the side of the reed corresponding to the gap according to the required vibration frequency of the reed 2 The edge shape of the .

Apparently, the above-mentioned embodiments are only examples for clear description, rather than limiting the implementation. For those of ordinary skill in the art, other changes or changes in different forms can be made on the basis of the above description. It is not necessary and impossible to exhaustively list all the implementation manners here. And the obvious changes or changes derived therefrom are still within the scope of protection of the present invention.

Claims (13)

1. A diaphragm mechanism applied to a receiver, characterized in that, comprising The fixed frame (1) has a hollow inner cavity; Reed (2), one end is the root side and is connected to the fixed frame (1) through the fixed end (21), and a gap (5) is formed between the other sides and the fixed frame (1), and is suspended in the air. In the hollow inner cavity; the edge shape of the side of the reed (2) corresponding to the gap (5) is determined according to the required vibration frequency of the reed (2); the reed (2) is controlled by the electromagnetic mechanism Drive to do reciprocating vibration; The sound film (3) is fixed on the fixed frame (1) and covered on the reed (2); to seal the gap (5) formed between the fixed frame (1) and the reed The airflow channel between the upper and lower surfaces of the sheet (2). 2. The diaphragm mechanism applied to a receiver according to claim 1, characterized in that, the shape of the edge is, on the reed (2), a free end opposite to the fixed end (21) ( 22) has at least one notch (221) at its end. 3. The diaphragm mechanism applied to a receiver according to claim 2, characterized in that there are two missing corners (221), and the ends of the suspended ends (22) are trapezoidal or triangular. 4. The diaphragm mechanism applied to a receiver according to any one of claims 1-3, characterized in that, the free end (22) on the reed (2) opposite to the fixed end (21) ) is provided with at least one treble hole (26), and in the direction of the reed (2) perpendicular to the root side, the treble holes (26) are distributed on the side from the fixed end (21) Within the scope of 2/3-1 of reed (2) length. 5. The diaphragm mechanism applied to a receiver according to claim 4, wherein at least one bass hole (24) is provided on the fixed end (21) of the reed (2), and at least one bass hole (24) is provided on the fixed end (21) of the reed (2), (2) In the direction perpendicular to the root side, the bass holes (24) are distributed within 1/3 of the length of the reed (2) from the fixed end (21), and the bass holes The aperture of (24) is greater than the aperture of described tweeter hole (26). 6. The diaphragm mechanism applied to a receiver according to claim 5, characterized in that, said reed (2) is also provided with at least one mid-tone hole (25), which is perpendicular to said reed (2). In the direction of the root side, the middle tone holes (25) are distributed in the range of 1/3-2/3 of the length of the reed (2) from the fixed end (21). 7. The diaphragm mechanism applied to a receiver according to claim 6, characterized in that, the diameter of the middle sound hole (25) is larger than the diameter of the tweeter hole (26) and smaller than the bass hole (24) caliber. 8. The diaphragm mechanism applied to a receiver according to claim 7, characterized in that, the diameter of the bass hole (24) is 0.1mm-1mm; The diameter of the middle tone hole (25) is 0.01mm-0.1mm; the diameter of the tweeter hole (26) is 0.003mm-0.01mm. 9. The diaphragm mechanism applied to a receiver according to any one of claims 4-8, characterized in that, on the reed (2), the notch (221) facing the fixed end One end of (21) is located in the area of the reed (2) where the tweeter hole (26) is located. 10. The diaphragm mechanism applied to a receiver according to any one of claims 1-9, characterized in that, the fixed end (21) of the reed (2) is provided with a hole extending along the root side. Oblong hole (211). 11. The diaphragm mechanism applied to a receiver according to any one of claims 1-10, characterized in that, on the side of the reed (2) perpendicular to the root side, at least an inwardly recessed A gap (23). 12. The diaphragm mechanism applied to a receiver according to any one of claims 1-11, characterized in that, a surface of the side of the reed (2) facing away from the sound diaphragm (3) is provided with a There is a metal sheet (6), the elasticity of the metal sheet (6) is greater than that of the reed (2), and its thickness is smaller than that of the reed (2). 13. The diaphragm mechanism applied to a receiver according to any one of claims 1-12, characterized in that, the thickness of the reed (2) is from the free end (22) to the distance away from the free end The other end of (22) gradually increases; and/or The elasticity of the suspended end (22) is greater than that of the fixed end (21).