A diaphragm mechanism for receiver

Abstract

The present invention discloses a diaphragm mechanism for a receiver, comprising a fixed frame, a reed and a sound film. The fixed frame has a hollow inner cavity; one end of the reed is connected to the fixed frame through a fixed end at the root side, and a gap is formed between the other side and the fixed frame, and the reed is suspended in the hollow inner cavity; the edge shape of the side of the reed corresponding to the gap is determined according to the vibration frequency required by the reed; the reed is driven by an electromagnetic mechanism to reciprocate; the sound film is fixed on the fixed frame and covers the reed; an air flow channel is formed between the upper and lower surfaces of the fixed frame and the reed by the sealed gap. The edge shape of the side of the reed corresponding to the gap is determined according to the vibration frequency required by the reed, that is, the edge shape of the suspended end of the reed opposite to the fixed end is changed to change the vibration frequency required for the high pitch when the reed vibrates, so that the resonance point between the reed and the air is shifted, thereby improving the high-frequency performance of the receiver.

Description

Technical Field

[0001] The present invention relates to the technical field of receivers, and in particular to a diaphragm mechanism applied to a receiver. Background Art

[0002] A receiver is an electroacoustic device that converts audio electrical signals into sound signals without sound leakage. It is widely used in communication terminal equipment such as mobile phones, landlines, and headphones to achieve audio output.

[0003] With the continuous development of mobile devices, people have higher and higher requirements for the quality of receivers, such as the requirements for the low-frequency performance of receivers. Chinese patent document CN204498334U discloses a receiver with good low-frequency performance, including a shell, a flap mechanism installed horizontally in the shell, and the flap mechanism divides the shell into two cavities along the vertical direction. The flap mechanism includes a fixed frame, a vibration plate and a sound membrane. The sound membrane is first fixed on the fixed frame, and then the vibration plate is fixed on the sound membrane. The vibration plate and the fixed frame are located on both sides of the sound membrane, and a sound cavity is formed between the sound membrane and the top surface of the shell; the flap mechanism is driven to vibrate by a separately arranged reed.

[0004] The receiver of this structure has a hole with a diameter ranging from 0.007mm to 0.017mm on the sound membrane in the flapping wing mechanism. The hole connects the sound cavity with the cavity below the flapping wing mechanism, thereby changing the flow of air entering the sound cavity through the hole, so as to improve 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 wing mechanism also requires a separately arranged reed to drive it, so there are many components in the receiver, resulting in a complex structure, inconvenient installation and high thickness of the receiver. Summary of the invention

[0005] 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.

[0006] To this end, the present invention provides a diaphragm mechanism for a receiver, comprising:

[0007] A fixed frame having a hollow inner cavity;

[0008] A reed, one end of which is a root side connected to the fixing frame through a fixing end, and a gap is formed between the other side and the fixing frame, and the reed is suspended in the hollow inner cavity; the edge shape of the side of the reed corresponding to the gap is determined according to the vibration frequency required by the reed; the reed is driven by an electromagnetic mechanism to reciprocate;

[0009] The sound film is fixed on the fixed frame and covers the reed to seal the air flow channel formed by the gap between the upper and lower surfaces of the fixed frame and the reed.

[0010] Preferably, in the above-mentioned diaphragm mechanism applied to a receiver, the edge shape is such that the end of the suspended end on the reed sheet opposite to the fixed end has at least one missing corner.

[0011] Further preferably, in the above-mentioned diaphragm mechanism applied to a receiver, the number of the missing corners is two, and the end of the suspended end is in the shape of a trapezoid or a triangle.

[0012] Preferably, in the above-mentioned diaphragm mechanism applied to the receiver, at least one treble hole is provided on the suspended end of the reed opposite to the fixed end, and in the direction of the reed perpendicular to the root side, the treble hole is distributed in the range of 2 / 3-1 of the length of the reed from the fixed end.

[0013] Further preferably, in the above-mentioned diaphragm mechanism applied to the receiver, at least one bass hole is provided on the fixed end of the reed, and in the direction of the reed perpendicular to the root side, the bass holes are distributed within the range of 1 / 3 of the length of the reed from the fixed end, and the diameter of the bass hole is larger than the diameter of the treble hole.

[0014] More preferably, in the above-mentioned diaphragm mechanism applied to the receiver, the reed is further provided with at least one mid-tone hole, and in the direction of the reed perpendicular to the root side, the mid-tone hole is distributed in the range of 1 / 3-2 / 3 of the length of the reed from the fixed end.

[0015] Further preferably, in the above-mentioned diaphragm mechanism applied to a receiver, the diameter of the mid-range hole is larger than the diameter of the treble hole and smaller than the diameter of the bass hole.

[0016] Preferably, in the above-mentioned diaphragm mechanism applied to the receiver, the caliber of the bass hole is 0.1mm-1mm;

[0017] The caliber of the mid-range hole is 0.01mm-0.1mm; the caliber of the treble hole is 0.003mm-0.01mm.

[0018] Preferably, in the above-mentioned diaphragm mechanism applied to a receiver, on the reed, the end of the notched angle facing the fixed end is located in the area of ​​the reed where the tweeter hole is located.

[0019] Preferably, an elongated hole extending along the root side is provided on the fixed end of the spring leaf.

[0020] Preferably, the diaphragm mechanism used in the receiver is provided with at least one inwardly recessed notch on the side of the reed perpendicular to the root side.

[0021] Preferably, in the above-mentioned diaphragm mechanism applied to the receiver, a metal sheet is provided on the surface of the reed facing away from the sound diaphragm, the elasticity of the metal sheet is greater than the elasticity of the reed, and the thickness of the metal sheet is less than the thickness of the reed.

[0022] 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

[0023] The elasticity of the suspended end is greater than the elasticity of the fixed end.

[0024] The technical solution of the present invention has the following advantages:

[0025] 1. The diaphragm mechanism for a receiver provided by the present invention comprises a fixed frame, a reed and a sound film. The fixed frame has a hollow inner cavity; one end of the reed is connected to the fixed frame through a fixed end at the root side, and a gap is formed between the other side and the fixed frame, and the reed is suspended in the hollow inner cavity; the edge shape of the side of the reed corresponding to the gap is determined according to the vibration frequency required by the reed; the reed is driven by an electromagnetic mechanism to reciprocate; the sound film is fixed on the fixed frame and covers the reed; and an airflow channel is formed between the upper and lower surfaces of the fixed frame and the reed to seal the gap.

[0026] The diaphragm mechanism of this structure determines the edge shape of the side of the reed corresponding to the gap according to the vibration frequency required by the reed, that is, the edge shape of the suspended end of the reed opposite to the fixed end is changed to change the vibration frequency required for the high pitch when the reed vibrates, so that the resonance point between the reed and the air is shifted, thereby improving the high-frequency performance of the receiver. No holes are provided on the diaphragm. After the diaphragm is fixed on the fixed frame, the diaphragm can separate the sound cavity in the receiver from the installation cavity, and the gas in the two cavities will not be connected, thereby ensuring the sealing performance of the sound cavity. In addition, the reed and the vibration plate are combined into one, and there is no need to set up a separate conduction rod. Only the electromagnetic drive mechanism is needed to directly drive the reed to vibrate. Before the diaphragm mechanism is installed on the receiver, the diaphragm is pre-fixed on the fixed frame. The diaphragm mechanism as a whole can be installed on the housing of the receiver only through the fixed frame, thereby simplifying the installation process of the receiver.

[0027] 2. The diaphragm mechanism used in the receiver provided by the present invention has an edge shape in which the end of the suspended end on the reed opposite to the fixed end has at least one missing corner. The design of the missing corner makes it possible for the reed to have a smaller width of the suspended end while the length of the reed remains unchanged, thereby increasing the frequency of the reed vibration and improving the high-frequency performance.

[0028] 3. The diaphragm mechanism used in the receiver provided by the present invention has at least one treble hole on the suspended end of the reed opposite to the fixed end, and in the direction of the reed perpendicular to the root side, the treble 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 has treble holes 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 the air resonates is shifted, and the treble vibration frequency is adjusted, thereby improving the high-frequency performance of the receiver.

[0029] 4. The diaphragm mechanism used in the receiver provided by the present invention has at least one bass hole on the fixed end of the reed, and in the direction of the reed perpendicular to the root side, the bass holes are distributed within 1 / 3 of the length of the reed from the fixed end, and the diameter of the bass hole is larger than the diameter of the treble hole. The bass hole is opened to change the vibration frequency of the reed material itself, so that the resonance point of the reed and the air resonates is shifted to adjust the vibration frequency of the bass, thereby improving the low-frequency performance of the receiver. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0031] Figure 1 A top view schematic diagram of a fixed frame and a reed in a diaphragm mechanism for a receiver provided by the present invention (the reed and the fixed frame are integrally formed);

[0032] Figure 2 for Figure 1 Schematic diagram of the three-dimensional structure of the middle diaphragm mechanism (looking up);

[0033] Figure 3 for Figure 1 Schematic diagram of the top view of the middle diaphragm mechanism (the diaphragm is fixed on the top surface of the fixed frame, hiding the reed and the fixed frame);

[0034] Figure 4A second structural schematic diagram of a fixed frame and a reed applied to a receiver diaphragm mechanism provided by the present invention;

[0035] Figure 5 A third structural schematic diagram of a fixed frame and a reed in the diaphragm mechanism provided by the present invention;

[0036] Figure 6 This is a schematic diagram of the diaphragm mechanism provided by the present invention after the fixed frame and the reed are separately manufactured and assembled;

[0037] Figure 7 A schematic diagram of a structure in which a metal sheet is arranged on a reed in a diaphragm mechanism provided by the present invention;

[0038] Explanation of the reference numerals: 1-fixed frame; 2-reed; 21-fixed end; 211-long hole; 22-suspended end; 221-missing corner; 23-notch; 24-bass hole; 25-mid-range hole; 26-treble hole; 3-sound membrane; 4-magnet; 5-gap; 6-metal sheet. DETAILED DESCRIPTION

[0039] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. 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.

[0040] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0041] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0042] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0043] Example 1

[0044] This embodiment provides a diaphragm mechanism for a receiver, such as Figures 1 to 3 As shown, it includes a fixing frame 1, a reed 2 and a sound membrane 3. The fixing frame 1 has a hollow inner cavity.

[0045] The reed 2 is made of magnetic conductive material, such as iron-nickel alloy. Figure 1 As shown, one end of the reed 2 is connected to the fixing frame 1 through the fixed end 21 at the root side, and a gap 5 is left between the other side and the fixing frame 1, and the reed 2 is suspended in the hollow inner cavity. The end of the reed 2 opposite to the fixed end 21 is the suspended end 22, and the suspended end 22 is driven by the electromagnetic mechanism to reciprocate. Figure 3 As shown, the sound membrane 3 is completely attached to the entire fixed frame 1 and covers the reed 2 to seal the air flow channel formed by the gap 5 between the upper and lower surfaces of the fixed frame 1 and the reed 2. For example, glue is provided on one side surface of the sound membrane 3 at positions corresponding to the fixed frame 1 and the reed 2, and the sound membrane 3 is fixed to the fixed frame 1 and the reed 2 by the glue. That is, the sound membrane 3 seals the gap 5 between the fixed frame 1 and the reed 2, and no holes of any structure are provided on the sound membrane 3, so that the gas on one side of the fixed frame 1 cannot pass through the sound membrane 3 to the space on the other side.

[0046] 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 to improve the high-pitched performance of the vibration of the reed 2. Figure 3 As shown, the edge shape of the side of the reed 2 is that there are two missing corners 221 at the end of the suspended end 22 of the reed, and the end of the suspended end 22 is trapezoidal. For the reed 2, under the premise that the length of the reed 2 remains unchanged, the smaller the width of the suspended end 22, the easier it is for the suspended end 22 to vibrate and the higher the vibration frequency, and the better the high-frequency performance of the vibration 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 transferred, thereby improving the high-frequency performance of the vibration of the reed 2. Optimally, the two missing corners 221 make the end of the suspended end 22 of the reed 2 triangular, or conical. If only a slight improvement is needed in the high-frequency performance of the vibration of the reed 2, the area of ​​the two missing corners 221 can be reduced, or only one missing corner 221 is provided.

[0047] like Figure 1As shown, six treble holes 26 are provided on the suspended end 22 of the reed 2. In the direction perpendicular to the root side of the reed 2, the treble holes 26 are distributed in the range of 2 / 3-1 of the length of the reed 2 from the fixed end 21. For example, the caliber of the treble hole 26 is in 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 smaller the caliber of the treble hole 26, the higher the frequency of the vibration 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 improvement when the caliber of the treble hole 26 is 0.003mm. At this time, when the caliber is further reduced, it exceeds the polarity value of the treble push energy. Even if the caliber is further reduced, the treble will not be further improved. This is related to the material and structural performance of the reed 2 itself. Of course, the caliber of the treble hole 26 can be designed to be greater than 0.01mm. At this time, the degree of improvement of the treble is very weak, and the treble will hardly be further improved. In short, 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.

[0048] For the reed, when the width of the reed 2 remains unchanged, the smaller the length of the reed 2, the better the improvement performance on the bass. In order not to affect the high-frequency performance, this embodiment opens a mid-range hole 25 and a bass hole 24 on the reed 2 without reducing the length of the reed 2, so as to improve the mid-frequency performance and low-frequency performance of the reed vibration. In the process of improving the treble, mid-range and bass, no hole structure will be opened on the sound membrane 3.

[0049] like Figure 1 As shown, two bass holes 24 are provided on the fixed end 21 of the reed 2, in the direction perpendicular to the root side of the reed 2 ( Figure 1The bass hole 24 is distributed in the range of 1 / 3 of the length of the reed 2 from the fixed end 21. The caliber of the bass hole 24 is larger than that of the treble hole. The caliber of the bass hole 24 is generally controlled within the range 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 caliber of the bass hole 24 can also be less than 0.1mm, which also improves the low-frequency performance, but the improvement effect is weak; the caliber of the bass hole 24 can also be greater than 1mm, but when the caliber of the bass hole 24 is greater than 1mm, the degree of improvement of the low-frequency performance is the same as the degree of improvement when the caliber of the bass hole 24 is 1mm, because when the caliber of the bass hole 24 exceeds 1mm, it exceeds the limit range of the bass push energy, and even if the caliber is increased, it will no longer play a further improvement role in the bass. When the caliber of the bass hole 24 is within the range of 0.1mm-1mm, the larger the caliber of the bass hole 24, the smaller the vibration frequency of the reed 2, and the better the quality of the bass. The two bass holes 24 can be evenly distributed on the fixed end 21 of the reed 2, or unevenly distributed. The even distribution of the bass holes 24 makes the bass more regular; the uneven distribution of the bass holes 24 makes the bass have multiple vibration frequencies at the same time, making the bass quality richer and fuller.

[0050] like Figure 1 As shown, the reed 2 is also provided with four mid-tone holes 25, which are distributed in the range of 1 / 3-2 / 3 of the length of the reed 2 from the fixed end 21 in the direction perpendicular to the root side of the reed 2; the caliber of the mid-tone hole 25 is larger than the caliber of the treble hole 26, and smaller than the caliber of the bass hole 24. Generally, the caliber of the mid-tone 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 is closer to the middle value, the higher the frequency of its vibration is, and the better the mid-frequency performance is improved; when the caliber of the mid-tone hole 25 is closer to the two edge values ​​(0.01mm or 0.1mm), the lower the vibration frequency is, and the weaker the effect of improving the mid-tone is, but there is still an improvement effect.

[0051] The above-mentioned middle-frequency holes 25 or treble holes 26 can also be evenly or unevenly distributed on the reed 2. When the middle-frequency holes 25 or treble holes 26 are evenly distributed, the improved middle-frequency performance or high-frequency performance is more regular; when the middle-frequency holes 25 or treble holes 26 are unevenly distributed, the improved middle-frequency or high-frequency range is wider, and the sound produced is richer and fuller.

[0052] The reed 2 is divided into three areas, namely, a bass area, a midrange area and a treble area, from the fixed end 21 thereof, in a direction perpendicular to the root side of the reed 2. A bass hole 24, a midrange hole 25 and a treble hole 26 are respectively provided in these three areas to change the vibration frequency of the reed 2 itself, thereby changing the low-frequency performance, the midrange performance and the high-frequency performance of the vibration of the reed 2. The caliber size of each hole is designed so that the caliber of the bass hole 24, the midrange hole 25 and the treble hole 26 is within the effective range, and the low-frequency performance, the midrange performance and the high-frequency performance of the vibration of the reed 2 are maximized, thereby improving the bass, the midrange and the treble of the receiver, making the sound quality of the receiver better, and the sound more beautiful and full. The end of the notch 221 on the suspended end 22 facing the fixed end 21 is located in the area where the treble hole 26 is located. The cooperation of the notch 221 and the treble hole 26 can further improve the treble performance, making the treble emitted by the receiver richer and more beautiful.

[0053] The shapes of the bass hole 24 , the middle tone hole 25 and the treble hole 26 are preferably circular holes, so as to facilitate processing and preparing the bass hole 24 , the middle tone hole 25 and the treble hole 26 on the reed 2 .

[0054] like Figure 2 As shown, the thickness of the spring 2 is flush with that of the fixing frame 1, so that the fixing frame 1 and the spring 2 can be prepared in an integrated manner. The width of the gap 5 reserved between the spring 2 and other side panels of the fixing frame 1 is generally controlled to be 0.1mm-0.5mm, such as 0.1mm, 0.2mm, 0.3mm, 0.4mm, 0.5mm, etc. Preferably, the fixing frame 1 is in the shape of a rectangular frame, and the spring 2 is correspondingly a rectangular plate; or as Figure 5 As shown, the shape of the fixing frame 1 is a circular frame, and the corresponding spring piece 2 is a circular plate.

[0055] The above-mentioned sound membrane 3 is made of elastic metal material, such as beryllium bronze, or can be made of non-metallic material, such as plastic.

[0056] Corresponding to the gap 5 between the fixed frame 1 and the reed 2, the diaphragm 3 is formed with a corresponding first protrusion along the gap 5, and the first protrusion protrudes toward the fixed surface facing away from the diaphragm 3. For example, when the diaphragm 3 is fixed on the bottom surface of the fixed frame 1, the first protrusion protrudes downward and is located below the bottom surface of the fixed frame 1. For another example, when the diaphragm 3 is fixed on the top surface of the fixed frame 1, the first protrusion protrudes upward. The two fixing methods of the diaphragm 3 make the first protrusion not be in the gap 5, increasing the amount of air agitated by the diaphragm 3, thereby changing the sound of the receiver.

[0057] As for the material of the fixing frame 1, the material of the fixing frame 1 can be the same as that of the reed 2, for example, both are magnetic conductive materials, which is convenient for one-piece molding. The structure of the fixing frame 1 and the reed 2 can be prepared by simply opening the above-mentioned gap 5 on the plate.

[0058] like Figure 4 and Figure 6 As shown, two inwardly recessed notches 23 are provided on the side of the reed 2 perpendicular to the root side, and the notches 23 change the stiffness, that is, the vibration elasticity, of the reed 2, making the reed 2 more likely to vibrate and improving the vibration sensitivity of the reed 2. Preferably, the notches 23 are provided on both sides of the fixing portion close to the reed 2.

[0059] like Figure 4 As shown, an elongated hole 211 extending along the root side is provided on the fixed end 21 of the reed 2. The setting of the elongated hole 211 reduces the fixing points between the fixed frame 1 and the reed 2, increases the stiffness of the reed 2, and reduces the electromagnetic force required for the vibration of the reed 2, thereby changing the frequency response of the sound membrane 33 agitating the air to produce sound.

[0060] like Figure 7 As shown, a metal sheet 6 is provided on the surface of the reed 2 facing away from the diaphragm 4, and the elasticity of the metal sheet 6 is greater than that of the reed 2, and the thickness thereof is less than that of the reed 2. The metal sheet 6 is preferably made of a non-magnetic conductive material, such as stainless steel, copper, plastic, aluminum, etc., to increase the vibration elasticity of the reed, so that the reed 2 is easier to vibrate and has better vibration sensitivity.

[0061] The diaphragm mechanism in this embodiment determines the area occupied by the notch 221 at the edge of the side of the reed 2 corresponding to the gap according to the vibration frequency required by the reed 2, so as to change the vibration frequency required for the high pitch when the reed 2 vibrates, so that the resonance point between the reed 2 and the air is shifted, thereby improving the high-frequency performance of the receiver. No holes are provided on the sound membrane 3. After the sound membrane 3 is fixed on the fixed frame 1, the sound membrane 3 can separate the sound cavity in the receiver from the installation cavity, and the gas in the two cavities will not be connected, thereby ensuring the sealing performance of the sound cavity. In addition, the existing reed and the vibration plate are combined into one, and there is no need to set up a separate conduction rod. Only the electromagnetic drive mechanism is needed to directly drive the reed 2 to vibrate. Before the diaphragm mechanism is installed on the receiver, the sound membrane 3 is pre-fixed on the fixed frame 1. The diaphragm mechanism as a whole can be installed on the housing of the receiver only through the fixed frame 1, thereby simplifying the installation process of the receiver.

[0062] As an alternative embodiment, the reed 2 can also be made of non-magnetic conductive materials, such as beryllium copper alloy, single copper, single aluminum, etc. Figure 2As shown, a magnet 4, such as a magnet, is arranged on the surface of the reed 2 facing away from the sound film 3, and the electromagnetic driving mechanism drives the reed 2 to vibrate to produce sound by driving the magnet 4. The magnet 4 can be one, two, or three, etc., and the specific number of magnets can be determined according to actual needs.

[0063] As a variation, the bass hole 24, midrange hole 25 and treble hole 26 may also be in the shape of a square hole, a conical hole, or holes of other shapes, such as a polygonal hole. The shapes of the three types of holes may be the same or different, depending on actual usage.

[0064] As an alternative embodiment, the sound film 3 can also be made of non-metallic materials, such as plastic. As a variation, the thickness of the reed 2 is less than the thickness of the fixed frame 1, and the fixed frame 1 only needs to play a fixing and supporting role, and the smaller the thickness of the reed 2, the easier it is to vibrate.

[0065] As an alternative embodiment, the fixing frame 1 and the reed 2 can also be in other shapes, for example, the fixing frame 1 is circular, and the reed 2 is a regular polygon, such as a hexagon, an octagon, or a quadrilateral; or a rhombus, or a trapezoid, etc. The shapes of the fixing frame 1 and the reed 2 can be designed according to the actual needs of the customer.

[0066] 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 variation, the first protrusion can also be omitted, and the sound membrane 3 is a flat membrane, which only needs to be elastic, and during the vibration of the reed 2, the sound membrane 3 can be driven to agitate the air to vibrate and produce sound.

[0067] As a variation, for the reed 2 itself, the thickness of the reed 2 can also gradually increase from its suspended end 22 to the fixed end 21. Under the same electromagnetic driving force, the thinner the suspended end 22 is, the easier it is to vibrate, and the higher the frequency of vibration is, which is beneficial to improve the treble part of the receiver; while the fixed end 21 has a large vibration amplitude, but a low vibration frequency, which is beneficial to improve its bass part. Alternatively, different materials are used to prepare the reed 2, so that the elasticity of the suspended end 22 of the reed 2 is greater than the elasticity of the fixed end 21, thereby improving the treble part of the suspended end 22 of the reed 2 and the bass part at the fixed end 21.

[0068] As an alternative implementation, Figure 6As shown, the material of the fixed frame 1 can also be different from the material of the spring 2, such as the spring 2 is a magnetic conductive material, and the fixed frame 1 is an alloy material, such as stainless steel. In this case, the spring 2 and the fixed frame 1 need to be manufactured separately, and finally the spring 2 is installed in the fixed frame 1, so as to form a combination of the fixed frame 1 and the spring 2. For example, a connecting end is formed on the fixed end 21 of the spring 2, and the spring 2 is fixedly connected to the fixed frame 1 by matching the connecting end with the groove provided on the inner wall surface of the fixed frame 1; or at least one connecting piece is separately provided to connect the fixed end 21 of the spring 2 to the fixed frame 1.

[0069] As an alternative embodiment, multiple notches 23 may be provided on the two side walls of the reed 2, for example, three, four, five, etc., or only one notch 23 may be provided on one side wall of the reed 2. As a variation, the notch 23 may not be provided on the side wall of the reed 2. As a variation, the elongated hole 211 may not be provided on the fixed end 21.

[0070] As an alternative embodiment, the number of bass holes 24 can also be one, three, four, five, etc., and the low-frequency performance of the reed 2 can be changed by only opening at least one bass hole 24 in the bass region of the reed 2. Similarly, the number of mid-range holes 25 can also be one, two, three, five, six, seven, etc., and at least one mid-range hole 25 can be opened in the mid-range region of the reed 2; the number of treble holes 26 can also be one, two, three, four, five, seven, eight, etc., and at least one treble hole 26 can be opened in the treble region of the reed 2.

[0071] As an alternative embodiment, the reed 2 may be provided with the treble hole 26 and the bass hole 24 instead of the middle tone hole 25; or the treble hole 26 may be provided instead of the middle tone hole 25; or only the bass hole 24, the middle tone hole 25, or the treble hole 26 may be provided. As a further variation, the bass hole 24, the middle tone hole 25, and the treble hole 26 may be provided instead of the middle tone hole 25.

[0072] As an alternative implementation, the above-mentioned metal sheet 6 may not be provided, and the reed 2 may be made of a magnetic conductive material with better stiffness or elasticity to increase the vibration elasticity of the reed.

[0073] As an alternative implementation, the shape of the missing corner 221 may also be other shapes, for example, the shape of the missing corner is a quadrilateral, a pentagon, a hexagon, etc., or other irregular shapes.

[0074] As a further variation, the edge shape of the side of the reed 2 corresponding to the gap 5 can be other shapes besides the notch, such as a V-shaped notch at the end of the suspended end 22, or an irregularly shaped notch. It is only necessary to keep the length of the reed 2 unchanged and reduce the width of the reed 2 to change the high-pitched vibration frequency of the reed, or determine the edge shape of the side of the reed corresponding to the gap according to the required vibration frequency of the reed 2.

[0075] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention.

Claims

1. A diaphragm mechanism for a receiver, characterized in that: include A fixed frame (1) having a hollow inner cavity; A reed (2) having one end connected to the fixing frame (1) via a fixed end (21) at the root side, and a gap (5) formed between the other side and the fixing frame (1), and suspended 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 vibration frequency required by the reed (2), and the edge shape is that the end of the suspended end (22) on the reed (2) opposite to the fixed end (21) has at least one notch (221), and at least one treble hole (26) is provided on the suspended end (22) on the reed (2) opposite to the fixed end (21); in the direction of the reed (2) perpendicular to the root side, the treble holes (26) are distributed in the range of 2 / 3-1 of the length of the reed (2) from the fixed end (21). The reed (2) is driven by the electromagnetic mechanism to reciprocate, and at least one bass hole (24) is provided on the fixed end (21) of the reed (2). In the direction of the reed (2) perpendicular to the root side, the bass holes (24) are distributed within a range of 1 / 3 of the length of the reed (2) from the fixed end (21), and the diameter of the bass holes (24) is larger than the diameter of the treble holes (26). The reed (2) is also provided with at least one middle-tone hole (25). In the direction of the reed (2) perpendicular to the root side, the middle-tone holes (25) are distributed within a range of 1 / 3-2 / 3 of the length of the reed (2) from the fixed end (21), and the diameter of the middle-tone holes (25) is larger than the diameter of the treble holes (26) and smaller than the diameter of the bass holes (24); The fixed end (21) of the leaf spring (2) is provided with an elongated hole (211) extending along the root side; At least one inwardly recessed notch (23) is provided on a side edge of the reed (2) perpendicular to the root side; A sound diaphragm (3) is fixed on the fixed frame (1) and covers the reed (2) to seal the air flow channel formed by the gap (5) between the upper and lower surfaces of the fixed frame (1) and the reed (2).

2. The diaphragm mechanism for a receiver according to claim 1, characterized in that: There are two missing corners (221), and the end of the suspended end (22) is in a trapezoidal or triangular shape.

3. The diaphragm mechanism for a receiver according to claim 2, characterized in that: The caliber of the bass hole (24) is 0.1 mm-1 mm; The caliber of the mid-range hole (25) is 0.01 mm-0.1 mm; the caliber of the treble hole (26) is 0.003 mm-0.01 mm.

4. The diaphragm mechanism used in a receiver according to any one of claims 1 to 3, characterized in that: On the reed (2), an end of the notched corner (221) facing the fixed end (21) is located in a region of the reed (2) where the treble hole (26) is located.

5. The diaphragm mechanism used in a receiver according to any one of claims 1 to 3, characterized in that: A metal sheet (6) is provided on the surface of the reed (2) on the side facing away from the sound membrane (3); the elasticity of the metal sheet (6) is greater than the elasticity of the reed (2), and the thickness of the metal sheet (6) is less than the thickness of the reed (2).

6. The diaphragm mechanism used in a receiver according to any one of claims 1 to 3, characterized in that: The thickness of the reed (2) gradually increases from the suspended end (22) to the other end away from the suspended end (22); and / or The elasticity of the suspended end (22) is greater than the elasticity of the fixed end (21).

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