Automobile electric horn with high tone quality, low energy consumption and long service life

Abstract

The invention discloses a high-tone-quality low-energy-consumption long-service-life automobile electric horn which comprises an iron cover assembly composed of an iron cover, a static iron core and a coil structure, a sounding assembly composed of a sounding diaphragm and a movable iron core, and a rolling part formed by bending the peripheral edge of the sounding diaphragm. The rolling part is wrapped and fastened on the outer side of the edge of the iron cover through an edge covering and riveting process, so that the iron cover assembly and the sounding assembly are assembled into an integral upper assembly in a riveting manner, a lower assembly is assembled through the horn and the mounting bottom plate, and the upper assembly and the lower assembly form the electric horn assembly through a buckling and pressing structure. By means of the installation design, parts such as plastic rings and bolts needed by traditional screw connection or welding are omitted, the assembly complexity is reduced, the installation structure is simplified, automatic production is easy, cost is reduced, the overall weight of the product is reduced, and reliable sealing performance, anti-rust performance and structural rigidity are obtained; and the structural stability, the acoustic performance and the long-term working reliability of the product are improved.

Description

Technical Field

[0001] The invention belongs to the field of automobile accessories, and in particular relates to an automobile electric horn with high sound quality, low energy consumption and long service life. Background Art

[0002] With the continuous advancement of automotive technology and consumers' increasing emphasis on vehicle comfort and safety, the stability and reliability of electric horns, as a crucial component of automobiles, are attracting increasing attention. Electric horns, a speaker that converts electrical signals into sound, not only emit necessary audible signals to warn pedestrians and attract the attention of other vehicles while driving, but also serve to urge vehicles on and transmit signals, playing an indispensable role in ensuring traffic safety.

[0003] There are many types of electric horns, but they are mainly divided into two categories: snail-shaped horns and disc-shaped horns. The following is the working principle of a snail-shaped electric horn: the electric horn mainly consists of a power connector, a contact assembly, a coil, a sounding diaphragm, a moving iron core (armature), a stationary iron core, an iron cover, and a horn. When the driver presses the horn switch, current flows through the coil via the contacts. The coil generates a magnetic force that moves the moving iron core and the sounding diaphragm. During this movement, the sounding diaphragm drives the contact assembly to open, thereby interrupting the current. The magnetic force of the coil disappears, and the sounding diaphragm, under the action of its own elasticity, returns to its original position together with the moving iron core. The reset contact assembly closes the circuit again, and this cycle repeats, generating vibrations, thus producing sound. Typically, cars use a combination of electric horns with two sound frequencies: a low frequency of 410 Hz and a high frequency of 510 Hz. The frequency accuracy determines the sound quality and volume of the horn. The traditional assembly method of snail electric horns usually adopts the assembly method, among which the screw assembly is to use screws to combine the iron cover and the horn. Because the screw assembly process is prone to thread slippage and rust, the assembly efficiency is low and the installation reliability is poor. This assembly method causes poor sealing between the iron cover and the horn, air leakage or water ingress, resulting in sound reduction and shortened service life; the adhesive assembly is to apply glue on the iron cover and then bond it to the horn. Although there is no plastic base plate, the glue is easy to age and often falls off, and the reliability of the product is significantly reduced. The above increases production costs and management complexity. It can be seen from the above-mentioned electric horn structure that it still has the following problems: 1. The above-mentioned assembly method adopted by the electric horn increases production costs and management complexity, and affects the reliability and stability of the product. There are some problems such as a large number of installed parts, high assembly precision requirements, which are not conducive to product automation and lightweighting, and increase costs. Therefore, it is necessary to optimize and improve the assembly method of the electric horn to improve the quality stability and reliability of the electric horn; 2. During long-term and frequent use of the electric horn, the sound diaphragm moves and deforms due to frequent vibrations, resulting in a decrease in the pressure on the contacts. In addition, the contacts will also cause burning and wear due to long-term on and off, resulting in a small pressure when the contacts are closed, poor contact, a decrease in current, a smaller sound, and a shortened service life. At the same time, abnormal contact pressure will also lead to disordered vibration frequency, abnormal sound quality, mute sound or pitch shift, shortening the service life of the product. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the problems in the prior art of electric horns that the assembly method used increases production costs and management complexity, has a large number of installation parts, a complex production process, and affects product reliability and stability, thereby providing a car electric horn with a simple installation structure, reduced number of installation parts, easy automated production, low costs, and good structural stability.

[0005] In order to solve the above technical problems, the present invention provides a high-quality, low-energy-consumption, and long-life automobile electric horn, comprising: The upper assembly includes an iron cover assembly and a sound producing assembly, wherein the iron cover assembly includes an iron cover, a static iron core fixedly disposed in the iron cover, and a coil structure fixed to the static iron core; the sound producing assembly includes a sound producing diaphragm and a movable iron core fixedly disposed in the middle of the sound producing diaphragm, the outer peripheral edge of the sound producing diaphragm is bent to form a rolled portion, and the rolled portion is covered and fastened to the outer side of the edge of the iron cover by a riveting process, so that the sound producing diaphragm and the iron cover form a circumferentially sealed integrated structure, and the iron cover assembly and the sound producing assembly are assembled into an integral upper assembly by riveting between the sound producing diaphragm and the iron cover; The lower assembly includes a fixedly connected speaker tube and a mounting base. The mounting base has a central area for accommodating a sound-producing component. The sound-producing component is mounted on the mounting base through a buckling structure, so that the upper assembly and the lower assembly are connected through the buckling structure to form an integral electric speaker assembly.

[0006] As a preferred solution, a sealing gasket is provided between the sound diaphragm and the annular flange, and the sealing gasket is clamped between the contact surface between the edge of the sound diaphragm and the edge of the iron cover. After the rolled-up part is riveted to cover the outer edge of the iron cover and the sealing gasket, the sound diaphragm, the sealing gasket and the iron cover are tightly combined to form a continuous edge sealing layer.

[0007] As a preferred solution, the rolled-up portion is a rolled-edge structure formed by folding the outer edge of the sounding diaphragm upward to form a continuous ring shape, and the edge of the iron cover is formed into an annular flange that cooperates with the rolled-edge structure. The rolled-edge structure is covered on the annular flange by riveting and combined with the annular flange to form an uninterrupted locking edging structure.

[0008] As a preferred solution, the buckling structure includes a buckling flange arranged on the outer peripheral edge of the mounting base plate, and a buckling groove formed by the buckling flange. The locking edging structure of the rolled-up portion wrapped on the edge of the iron cover is adapted to the buckling groove, and the locking edging structure is elastically buckled in the buckling groove by extrusion.

[0009] As a preferred solution, the cross-sectional shape of the snap-fit ​​flange is a barb shape, the locking edging structure is embedded in the snap-fit ​​groove to form a limiting fit with the snap-fit ​​flange, the mounting base is fixedly connected to the horn through a welding structure or a snap-fit ​​structure, so that the mounting base is clamped between the iron cover assembly and the horn, and the upper assembly consisting of the sounding assembly and the iron cover assembly and the lower assembly consisting of the mounting base and the horn are snap-connected.

[0010] As a preferred solution, the mounting base plate includes a center hole opposite to the moving iron core above and below and a conical surface structure arranged around the center hole, as well as an annular sealing groove formed around the conical surface structure, and a buckling structure arranged on the outer peripheral edge of the mounting base plate. The annular sealing groove is filled with a sealing layer that cooperates with the sound diaphragm. A smooth rounded structure transition is set between the root of the conical surface structure and the center hole, and the center hole is connected to the acoustic cavity of the speaker.

[0011] As a preferred solution, the iron cover is sealed and connected to the sound-producing diaphragm to form an inner cavity of the iron cover that accommodates the static iron core, the moving iron core and the coil structure. The static iron core is fixed to the center of the inner surface of the iron cover by a riveting structure; the coil structure is fixed to the static iron core by a riveting structure to form an integrated coil component; the moving iron core is fixed to the center of the sound-producing diaphragm by a riveting structure to form an integrated diaphragm component; the electromagnetic force generated by the power-on of the coil structure attracts the moving iron core to make reciprocating motion along the axial direction of the coil structure.

[0012] As a preferred solution, the iron cover assembly further includes a contact assembly integrated inside the iron cover, and the contact assembly includes: The insulating baffle is fixed in the iron cover and has contact holes extending through both sides; A lower contact piece is provided on one side of the insulating blocking piece and is provided with a lower contact opposite to the contact through hole; An upper contact piece is provided on the other side of the insulating baffle and is provided with an upper contact that can pass through the contact through hole and cooperate with the lower contact; the upper contact piece is arranged on the movement path of the movable iron core so that the upper contact piece contacts or separates with the lower contact piece under the drive of the movable iron core; The lower contact piece and the upper contact piece are respectively spring structures and are electrically connected to the electrical circuit of the coil structure; The pressure compensation structure comprises a first compensation spring arranged between the coil structure and the upper contact piece, wherein the first compensation spring is used to provide an elastic pre-pressure to the upper contact toward the lower contact.

[0013] As a preferred solution, the pressure compensation structure also includes a connecting seat arranged on the iron cover and an adjusting member that passes through the connecting seat and extends into the iron cover and is threadedly connected to the lower contact piece, and a second compensation spring arranged between the adjusting member and the connecting seat. The second compensation spring applies an adjustable upward elastic pre-pressure toward the upper contact piece to the lower contact piece. The adjusting member is movably arranged relative to the lower contact piece through a threaded structure. When the adjusting member moves, the second compensation spring is compressed or released to adjust the elastic pre-pressure of the second compensation spring on the lower contact piece.

[0014] As a preferred solution, the lower contact piece has an intermediate bridging portion connected between its two ends in a bridge structure, and the lower contact is arranged on the intermediate bridging portion. One end of the lower contact piece is fixed to the insulating baffle, and the other end is an adjusting end threadedly connected to the adjusting member, so that the lower contact piece forms a double-end constrained elastic beam structure, and a threaded hole is provided on the adjusting end. The adjusting member is an adjusting screw connected to the threaded hole, and the second compensation spring is compressed or released when the adjusting member is rotated and moves axially along the threaded hole.

[0015] As a preferred solution, the connecting seat includes a connecting cavity suitable for accommodating a second compensation spring and an adjusting member, and a connecting hole connecting the connecting cavity and the inner cavity of the iron cover and allowing the adjusting member to pass through. The second compensation spring is sleeved on the outside of the adjusting member, and its two ends respectively abut the connecting seat and the head of the adjusting member. The adjusting member is sleeved with a shock-absorbing component located between the connecting seat and the lower contact piece. A protective cover covering the adjusting member and the second compensation spring is installed on the connecting seat, and a sealing ring is provided between the connecting seat and the iron cover.

[0016] As a preferred solution, one end of the upper contact piece is fixed on the insulating baffle, and the other end is a movable end provided with an upper contact. The coil frame of the coil structure is provided with a positioning protrusion protruding toward one side of the upper contact, and the two ends of the first compensation spring are respectively positioned on the positioning protrusion and the movable end of the upper contact piece.

[0017] The technical solution of the present invention has the following advantages over the prior art: 1. In the automobile electric horn provided by the present invention, the rolled-up portion of the sounding diaphragm is wrapped and fastened to the edge of the iron cover by a rim riveting process, thereby directly integrating the iron cover assembly and the sounding assembly into a sealed integral upper assembly. This eliminates the need for plastic rings, bolts and other parts required for traditional screw connections or welding, greatly reduces the number of installation parts, reduces assembly complexity, and reduces the overall weight of the product. At the same time, the lower assembly composed of the horn tube and the mounting base plate is pre-assembled separately from the upper assembly and the lower assembly, and then the sounding assembly is installed on the mounting base plate through a buckling structure, so that the upper assembly and the lower assembly are directly buckled and assembled into a complete electric horn assembly. The core of the automobile electric horn structural design using this technical solution lies in the integrated sealing connection of the upper assembly through the rim riveting process and the convenient assembly of the upper and lower assemblies through the buckling structure, which simplifies the installation structure, facilitates automated production, reduces costs, and obtains reliable sealing, rust resistance, structural rigidity and stability, providing a more stable structural support for good sound quality, and improving the working performance and service life of the electric horn product.

[0018] 2. In the automobile electric horn provided by the present invention, the sounding diaphragm is riveted with the edge of the iron cover through the rolled-up portion to form a continuous and uniform circumferential connection, so that the sounding diaphragm and the iron cover are firmly combined into a whole, and then the assembled sounding diaphragm is assembled to the mounting base through the buckling structure, so that a reliable rigid connection is maintained between the sounding diaphragm, the iron cover and the mounting base to reduce vibration attenuation, and avoid noise and air leakage caused by loose connection or poor sealing. This sounding diaphragm forms an overall rigid locking edging structure with the flange of the iron cover through continuous riveting, which provides higher rigidity and strength than traditional single-point screw fixation, more uniform vibration energy transmission, reduced local stress concentration at the edge of the diaphragm, and can better withstand the vibration and impact force generated when the horn is working, reduce relative displacement and micro-wear between components, thereby improving the structural stability, acoustic performance and long-term working reliability of the product.

[0019] 3. In the automobile electric horn provided by the present invention, a sealing gasket is provided between the sounding diaphragm and the annular flange. The sealing gasket is clamped and generates a continuous elastic pre-tightening force after riveting, which can offset the loosening of the contact surface caused by temperature changes or vibrations, so that the combination of the sounding diaphragm, the sealing gasket and the iron cover is tighter and more stable, the structural fit is enhanced, the connection reliability is improved, and the structural gap in long-term use is reduced. This design forms a multiple sealing mechanism at the riveted combination position of the sounding diaphragm and the iron cover, which can be divided into a first seal formed by the plastic deformation of the diaphragm curling and the riveted iron cover flange, a second seal formed by the elastomer of the sealing gasket itself, and an overall sealing barrier formed by the curling structure covering and pressing the three, which significantly improves the sealing performance of the product and makes the product more reliable and durable.

[0020] 4. In the automobile electric horn provided by the present invention, the curling structure formed by the upward folding of the sounding diaphragm is coated on the annular flange of the iron cover, and is combined with the riveting of the annular flange through the riveting process to form an uninterrupted locking edge structure. This arrangement has the following advantages: First, the annular flange on the edge of the iron cover provides a precise positioning reference and strong internal support for the riveting process. During riveting, the curling of the sounding diaphragm is evenly and tightly wrapped under pressure and plastically deformed to fit the contour of the annular flange, thereby covering the edge of the iron cover to form a highly consistent circumferential seal, effectively isolating water vapor , dust, and corrosive media enter the core area of ​​the speaker, thereby improving the protection level of the product; secondly, the annular flange of the iron cover acts as a rigid support, sharing the load transmitted by the curling structure, thereby reducing the stress directly acting on the flat sounding area of ​​the pronunciation diaphragm, reducing the risk of fatigue cracking of the diaphragm, extending the service life of the diaphragm, and helping to maintain the stability of the speaker sound quality; finally, in terms of assembly, the sealing and mechanical connection between the iron cover assembly and the pronunciation assembly can be completed through only one continuous annular riveting, realizing modular assembly, reducing material costs, and improving production efficiency.

[0021] 5. In the automobile electric horn provided by the present invention, the locking edging structure of the sounding diaphragm is elastically engaged in the snap-fit ​​groove through extrusion. Since the locking edging structure itself is an annular rigid structure, it forms circumferentially uniform contact with the surrounding snap-fit ​​groove, and the elastic pre-tightening force generated by extrusion makes the two tightly engaged, thereby realizing a fixed connection between the sounding diaphragm and the mounting base plate. The design of circumferentially uniform force can effectively resist high-frequency vibration and bumpy impact during driving of the car, avoid the upper assembly and the lower assembly from loosening due to vibration, and ensure the connection stability of the overall structure under complex working conditions. Moreover, this buckling installation method does not require additional fasteners. During assembly, it is only necessary to align the locking edging structure of the upper assembly with the snap-fit ​​groove, and achieve one-time snap-fit ​​fixation through pressure, which greatly reduces the number of assembly steps and parts, facilitates maintenance, and greatly reduces after-sales maintenance costs.

[0022] 6. In the automobile electric horn provided by the present invention, the first compensation spring is pre-compressed and installed between the inner wall of the iron cover and the upper contact piece, which not only provides pressure compensation, but also absorbs and dissipates the vibration energy from the horn's own working vibration and the vibration energy transmitted by the vehicle. When the sound diaphragm is slightly deformed due to long-term vibration or the contact is worn, resulting in a decrease in contact pressure, the pre-pressure of the first compensation spring is used to automatically fill this part of the lost pressure, maintain the stability of the total contact pressure, and ensure that the contact maintains close and sufficient physical contact when the contact is closed. The first compensation spring is designed to mainly compensate for the pressure attenuation on the upper contact piece side caused by diaphragm deformation or upper contact wear. In this way, it is ensured that throughout the life cycle of the product, regardless of diaphragm deformation or contact wear, the contact pressure when the contact is closed can be maintained within the optimal design range, avoiding the increase of contact resistance, heat generation and even contact failure due to insufficient pressure.

[0023] 7. In the automobile electric horn provided by the present invention, the wear of the lower contact will also cause the contact gap to increase and the pressure to drop. The structural design of the second compensation spring and the adjustment member is mainly used to compensate for the pressure attenuation on the side of the lower contact piece. With this structural setting, the initial pre-pressure of the second compensation spring on the lower contact piece can be accurately adjusted by rotating the adjustment member, so that it is perfectly matched with the pre-pressure of the first compensation spring and the driving force of the moving iron core to achieve the optimal initial contact pressure; and if the lower contact is significantly worn, it is only necessary to rotate the adjustment member again and compress the second compensation spring. The second compensation spring increases its upward pre-pressure thrust on the lower contact piece. This thrust is transmitted through the lower contact piece to compensate for the increase in gap and pressure loss caused by the wear of the lower contact, which not only compensates for the wear, but also significantly enhances the anti-vibration ability of the lower contact piece in a vibration environment.

[0024] 8. In the automotive electric horn provided by the present invention, the pitch (frequency) and loudness of the electric horn are highly dependent on the frequency and amplitude of the diaphragm vibration driven by the moving iron core, and this frequency is precisely controlled by the period of the contact on-off coil current. This technical solution achieves the purpose of bidirectional independent compensation by designing two sets of spring compensation structures. The first compensation spring can continuously compensate for pressure loss on the upper contact piece side, and the second compensation spring can compensate for pressure loss on the lower contact piece side through the pressure adjustment of the adjusting member. The coordinated control of bidirectional pressure forms a dynamic-static dual elastic preload system, which effectively solves the problem of pressure attenuation caused by independent wear on both sides of the contact pair. It ensures that regardless of which side of the contact wears, the contact pressure when the contact is closed can be accurately maintained within the optimal range, and the pressure compensation is more comprehensive and thorough. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the specific implementation of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the specific implementation or the description of the prior art.

[0026] Figure 1 A schematic diagram of the three-dimensional structure of the automobile electric horn provided by the present invention; Figure 2 It is a schematic diagram of the split structure of the automobile electric horn of the present invention; Figure 3 This is a schematic diagram of the explosion of the automobile electric horn of the present invention; Figure 4 is a cross-sectional schematic diagram of the automobile electric horn of the present invention; Figure 5 for Figure 4 A schematic diagram of the local enlarged structure of position A shown in FIG; Figure 6 is a schematic structural diagram of the contact assembly of the present invention; Figure 7 It is a structural schematic diagram of the contact assembly and pressure compensation structure of the present invention; Figure 8 It is a structural schematic diagram of the mounting base plate and the horn of the present invention.

[0027] Explanation of the accompanying drawings: 1. Iron cover; 11. Annular flange; 2. Pronunciation diaphragm; 21. Rolling portion; 22. Locking edging structure; 3. Mounting base; 31. Snap-fit ​​flange; 32. Center hole; 33. Conical surface structure; 34. Sealant layer; 4. Speaker; 41. Acoustic cavity; 5. Sealing gasket; 6. Contact assembly; 61. Insulating baffle; 62. Upper contact piece; 63. Lower contact piece; 631. Adjustment end; 632. Middle bridge portion; 64. Threaded hole; 7. First compensation spring; 8. Second compensation spring; 81. Adjustment member; 82. Connecting seat; 83. Connecting hole; 84. Protective cover; 85. Sealing ring; 86. Shock-absorbing component; 91. Coil structure; 92. Static iron core; 93. Moving iron core; 100. Upper assembly; 101. Iron cover assembly; 102. Pronunciation assembly; 200. Lower assembly. DETAILED DESCRIPTION

[0028] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0029] In the description of the present invention, it should be noted that the terms "first", "second" and "third" are only used for descriptive purposes and should not be understood as indicating or implying relative importance.

[0030] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0031] Example This embodiment provides Figures 1-8 The present invention provides a high-quality, low-energy-consumption, and long-life automobile electric horn, comprising: The upper assembly 100 includes an iron cover assembly 101 and a sound producing assembly 102. The iron cover assembly 101 includes an iron cover 1, a static iron core 92 fixedly disposed in the iron cover 1, and a coil structure 91 fixed to the static iron core 92. The sound producing assembly 102 includes a sound producing diaphragm 2 and a movable iron core 93 fixedly disposed in the middle of the sound producing diaphragm 2. The outer peripheral edge of the sound producing diaphragm 2 is bent to form a rolled portion 21. The rolled portion 21 is wrapped and fastened to the outer side of the edge of the iron cover 1 through a riveting process, so that the sound producing diaphragm 2 and the iron cover 1 form a circumferentially sealed integrated structure. The iron cover assembly 101 and the sound producing assembly 102 are assembled into an integral upper assembly 100 by riveting the sound producing diaphragm 2 and the iron cover 1. The lower assembly 200 includes a fixedly connected speaker 4 and a mounting base 3, so that the speaker 4 and the mounting base 3 are connected to form a closed speaker cavity. The mounting base 3 has a central area for accommodating the sound-producing component 102. The sound-producing component 102 is installed on the mounting base 3 through a buckling structure, so that the upper assembly 100 and the lower assembly 200 are connected through the buckling structure to form an integral electric speaker assembly.

[0032] In the above embodiment, the rolled portion 21 of the pronunciation diaphragm 2 is wrapped and fastened to the edge of the iron cover 1 through the edge riveting process, thereby directly integrating the iron cover component 101 and the pronunciation component 102 into a sealed upper assembly 100. This eliminates the need for plastic rings, bolts and other parts required for traditional screw connections or welding, greatly reduces the number of installation parts, reduces assembly complexity, and directly reduces the overall weight of the product. At the same time, the lower assembly composed of the speaker 4 and the mounting base 3 is assembled separately and independently according to the upper assembly 100 and the lower assembly 200, which improves the assembly effect. The sound-producing component is then installed on the mounting base 3 through the buckling structure, and the upper assembly 100 and the lower assembly 200 are directly buckled and assembled into a complete electric horn assembly. The core of the automobile electric horn structure design using this technical solution is to achieve an integrated sealed connection of the upper component through the edge riveting process and to achieve convenient assembly of the upper and lower assemblies through the buckling structure. This simplifies the installation structure, facilitates automated production, reduces costs, and obtains reliable sealing, rust resistance, structural rigidity and stability, providing more stable structural support for good sound quality and improving the working performance of the electric horn product.

[0033] The following combination Figure 2-Figure 5 A detailed explanation of the specific setting method between the pronunciation diaphragm and the iron cover: The rolled portion 21 is a rolled edge structure that is folded upward and formed on the outer peripheral edge of the pronunciation diaphragm 2 in a continuous ring shape. The edge of the iron cover 1 is formed into an annular flange 11 that cooperates with the rolled edge structure. The rolled edge structure is covered on the annular flange 11 by riveting, and is combined with the annular flange 11 to form an uninterrupted locking edge structure 22. The locking edge structure 22 formed by the riveting process has extremely high tensile strength, shear strength and torsional strength, thereby achieving high-strength and uniform mechanical locking. This structural setting has the following advantages: First, the annular flange 11 on the edge of the iron cover 1 provides a precise positioning reference and strong internal support for the riveting process. During riveting, the rolled edge of the pronunciation diaphragm 2 is evenly and tightly wrapped and molded under pressure. The iron cover 101 is deformed to fit the contour of the annular flange 11, thereby covering the edge of the iron cover 1 to form a highly consistent circumferential seal, effectively isolating water vapor, dust, and corrosive media from entering the core area of ​​the speaker, greatly improving the dust and water resistance of the product; secondly, the annular flange 11 of the iron cover 1 acts as a rigid support, sharing the load transmitted by the curling structure, thereby reducing the stress directly acting on the flat sound-producing area of ​​the pronunciation diaphragm 2, reducing the risk of fatigue cracking of the diaphragm, extending the service life of the diaphragm, and helping to maintain the stability of the speaker sound quality; finally, in terms of assembly, the sealing and mechanical connection between the iron cover assembly 101 and the pronunciation assembly 102 can be completed through only one continuous annular riveting, streamlining the structure, realizing modular assembly, reducing material costs, and improving production efficiency.

[0034] In order to improve the sealing performance of the sounding component 102 and the iron cover component 101 after riveting, refer to Figure 5 A sealing gasket 5 is provided between the sound diaphragm 2 and the annular flange 11. The sealing gasket 5 is clamped between the contact surface of the edge of the sound diaphragm 2 and the edge of the iron cover 1. After the rolled portion 21 is riveted to cover the outer edge of the iron cover 1 and the sealing gasket 5, the sound diaphragm 2, the sealing gasket 5 and the iron cover 1 are tightly combined to form a continuous edge sealing layer. The sealing gasket 5 is clamped and riveted to generate a continuous elastic preload, which can offset the loosening of the contact surface caused by temperature changes or vibrations, so that the sound diaphragm 2 and the sealing gasket are tightly combined. The combination of ring 5 and iron cover 1 is tighter and more stable, which enhances the structural fit, improves the connection reliability, and reduces the structural gap in long-term use. This structural design forms a multiple sealing mechanism at the riveted connection position of the sound diaphragm 2 and the iron cover 1, which can be divided into a first seal formed by the diaphragm curling and the riveted plastic deformation of the iron cover flange, a second seal formed by the elastomer of the sealing gasket itself, and an overall sealing barrier formed by the curling structure covering and pressing the three together, which significantly improves the sealing performance of the product and makes the product more reliable and durable.

[0035] The following combination Figure 1-Figure 4 The specific setting method of the buckling structure of the upper assembly and the lower assembly is described in detail: The mounting base plate 3 is a plastic base plate structure, which is preferably fixedly connected to the top of the horn by a welding structure, and a snap-fit ​​structure can also be used to achieve a fixed connection between the mounting base plate 3 and the horn 4. It is further preferred that the snap-fit ​​structure includes a snap-fit ​​flange 31 arranged on the outer peripheral edge of the mounting base plate 3, and a snap-fit ​​groove formed by the snap-fit ​​flange 31. The locking edging structure 22 of the rolled-up portion 21 wrapped around the edge of the iron cover 1 is adapted to the snap-fit ​​groove, and the locking edging structure 22 is elastically snapped into the snap-fit ​​groove by extrusion. Specifically, the cross-sectional shape of the snap-fit ​​flange 31 is a hook shape, and the locking edging structure 22 is embedded in the snap-fit ​​groove to form a limiting fit with the snap-fit ​​flange 31, so that the mounting base plate 3 is clamped between the iron cover assembly and the horn 4, and the upper assembly 100 composed of the pronunciation assembly and the iron cover assembly is connected to the mounting base plate 3 and the horn 4. The lower assembly 200 is connected by snapping along the axial direction. The advantage of such an installation design is that the locking edging structure 22 itself is an annular rigid structure, which forms circumferentially uniform contact with the circumferential snap-fit ​​groove. The elastic preload generated by extrusion makes the two tightly engaged, thereby realizing a fixed connection between the sound diaphragm 2 and the mounting base 3. The design of circumferentially uniform force can effectively resist high-frequency vibrations and bumps during driving of the car, avoid the upper assembly 100 and the lower assembly 200 from loosening due to vibration, and ensure the connection stability of the overall structure under complex working conditions. In addition, this snap-fit ​​installation method does not require additional fasteners. During assembly, it is only necessary to align the locking edging structure of the sound component with the snap-fit ​​groove, and achieve a one-time snap-fit ​​fixation through pressure, which greatly reduces the number of assembly steps and parts. The snap-fit ​​structure can be separated by applying a reverse force through special tools, which is convenient for disassembly and maintenance, and greatly reduces the after-sales maintenance cost.

[0036] In this embodiment, the iron cover 1 is sealed and connected to the pronunciation diaphragm 2 to form an inner cavity of the iron cover for accommodating a static iron core 92, a moving iron core 93 and a coil structure 91. The static iron core 92 is fixed to the center of the inner surface of the iron cover 1 by a riveting structure. The coil structure 91 is mainly composed of a coil skeleton and a wire package. The coil structure 91 is fixed to the static iron core 92 by a riveting structure to form a coil integral part; the moving iron core 93 is fixed to the center of the pronunciation diaphragm 2 by a riveting structure to form a diaphragm integral part. The electromagnetic force generated by the power-on of the coil structure 91 attracts the moving iron core 93 to make reciprocating motion along the axial direction of the coil structure 91. The coil integral part and the diaphragm integral part are modularly pre-assembled. The final assembly only needs to rivet the pre-assembly into the iron cover, which simplifies the installation process and realizes highly integrated installation. Finally, an electromagnetic acoustic system with strong rigidity, excellent magnetic circuit, strict sealing, long service life and easy production is constructed through the sealed inner cavity and triple riveting modularization.

[0037] As a preferred embodiment, combined with Figure 4 and Figure 8As shown, the mounting base plate 3 includes a center hole 32 opposite to the moving iron core 93 in the upper and lower directions and a conical surface structure 33 arranged around the center hole 32, as well as an annular sealing groove formed on the periphery of the conical surface structure 33 and a buckling structure arranged on the outer peripheral edge of the mounting base plate 3. The annular sealing groove is filled with a sealing rubber layer 34 that cooperates with the pronunciation diaphragm. The buckling structure includes the buckling flange 31 and the buckling groove. The center hole 32 is connected to the acoustic cavity 41 of the horn 4. A smooth rounded structure transition is set between the root of the conical surface structure 33 and the center hole 32, which is conducive to eliminating airflow separation vortices and reducing turbulent noise. The center hole 32 set through the mounting base plate 3 provides a guide channel for axial reciprocating motion for the moving iron core 93. After the pronunciation diaphragm 2 and the iron cover 1 are integrated into one, they are installed on the mounting base plate 3 through a buckling structure. The sealing rubber layer 34 in the annular sealing groove cooperates with the pronunciation diaphragm 2 to form an annular sealing belt, which ensures the sealing between the pronunciation diaphragm 2 and the mounting base plate 3, and can effectively prevent external air from leaking from the contact surface between the mounting base plate and the pronunciation diaphragm. At the same time, it can support the edge of the pronunciation diaphragm to ensure uniform circumferential tension of the diaphragm. The piston-like vibration of the pronunciation diaphragm 2 is converted into a spherical wave through the conical surface structure 33. When the pronunciation diaphragm vibrates, the moving iron core 93 drives the airflow through the center hole 32 to impact the conical surface. The conical surface reflects and diffuses the axial airflow into a spherical wave, which resonates with the acoustic cavity of the speaker 4, significantly improving the sound energy transmission efficiency and sound pressure level.

[0038] According to the fact that the contact pressure of the car electric horn is reduced due to slight deformation of the diaphragm or wear of the contact during frequent use, a contact component 6 that can compensate for the contact pressure is designed for this situation. As a preferred setting mode, combined with Figure 4-Figure 8As shown, the contact assembly 6 is integrated inside the iron cover, which includes an insulating baffle 61, a lower contact piece 63, an upper contact piece 62, a terminal and a pressure compensation structure, wherein the insulating baffle 61 is fixed on the inner wall of the iron cover 1, and is provided with a contact through-hole running through both sides; the lower contact piece 63 is arranged on one side of the insulating baffle 61, and is provided with a lower contact opposite to the contact through-hole; the upper contact piece 62 is arranged on the other side of the insulating baffle 61, and is provided with an upper contact that can pass through the contact through-hole and cooperate with the lower contact, the upper contact piece 62 is elastically movable relative to the lower static contact piece, and the upper contact piece 62 is arranged on the movement path of the moving iron core 93, so that the upper contact piece 62 is in contact with or separated from the lower contact piece 63 under the drive of the moving iron core 93; the lower contact piece 63 and the upper contact piece 62 are respectively spring structures and electrically In the electrical circuit connected to the coil structure 91, the contacts of the lower contact piece 63 and the upper contact piece 62 are normally closed contacts; the pressure compensation structure includes a first compensation spring 7 arranged between the coil structure and the upper contact piece 62, and the first compensation spring 7 is used to provide an elastic pre-pressure toward the lower contact to the upper contact. One end of the upper contact piece 62 is fixed on the insulating baffle 61, and the other end is a movable end with an upper contact. The coil skeleton of the coil structure 91 is provided with a positioning protrusion protruding toward one side of the upper contact. The two ends of the first compensation spring 7 are respectively positioned on the positioning protrusion and the movable end of the upper contact piece 62. Specifically, one end of the first compensation spring is sleeved on the positioning protrusion, and the other end is sleeved on the riveted protrusion on which the upper contact is riveted to the movable end. This design plays a positioning and installation role for the first compensation spring 7. The working principle of this electric horn is: when the horn switch is pressed, the current passes through the coil structure 91 through the contacts, and the coil structure 91 generates electromagnetic force to drive the moving iron core 93 and the sound diaphragm 2 to move, and drives the upper contact piece 62 to move through the sound diaphragm 2, thereby disconnecting the contacts between the lower and upper contact pieces, that is, disconnecting the current to make the magnetic force of the coil structure disappear. At this time, the sound diaphragm 2 drives the moving iron core 93 to reset under its own elastic action, and the upper contact piece 62 is immediately elastically deformed and reset after being separated from the moving iron core 93, so that the contacts are closed and the circuit is connected again. The electric horn repeats this cycle to generate vibration, thereby making a sound.

[0039] The advantage of adopting the above-mentioned pressure compensation structure design is that the first compensation spring 7 is pre-compressed and installed between the inner wall of the iron cover and the upper contact piece 62, so that the first compensation spring 7 applies a force to press the upper contact toward the lower contact. This first compensation spring 7 not only provides pressure compensation, but also absorbs and dissipates the vibration energy from the speaker's own working vibration and the vibration energy transmitted by the vehicle. When the sound diaphragm 2 is slightly deformed due to long-term vibration or the contact is worn, resulting in a weakening of the contact pressure, the pre-pressure of the first compensation spring 7 is used to automatically compensate for this part of the lost pressure, maintain the stability of the total contact pressure, and ensure that the contact maintains close and sufficient physical contact when the contact is closed. The technical solution is designed to mainly compensate for the pressure attenuation on the upper contact piece side by the first compensation spring 7, so as to ensure that throughout the life cycle of the product, regardless of diaphragm deformation or contact wear, the contact pressure when the contact is closed can be maintained within the optimal design range, avoiding the increase of contact resistance, heat and even contact failure caused by insufficient pressure.

[0040] The wear of the lower contact of the lower contact piece 63 will also cause the contact gap to increase and the pressure to drop. For this reason, the pressure compensation structure also includes a connecting seat 82 arranged on the iron cover 1 and an adjusting member 81 that passes through the adjusting seat and extends into the iron cover 1 and is threadedly connected to the lower contact piece 63, and a second compensation spring 8 arranged between the adjusting member 81 and the connecting seat 82. The second compensation spring 8 applies an adjustable upward elastic pre-pressure toward the upper contact piece 62 to the lower contact piece 63. The adjusting member 81 is movably arranged relative to the lower contact piece 63 through a threaded structure. When the adjusting member 81 moves, the second compensation spring 8 is compressed or released to adjust the elastic pre-pressure of the second compensation spring 8 on the lower contact piece 63. The advantage of this design is that the design of the second compensation spring 8 and the adjustment member 81 is mainly used to compensate for the pressure attenuation on the side of the lower contact piece 63. With this structural setting, the initial preload of the second compensation spring 8 on the lower contact piece 63 can be accurately adjusted by rotating the adjustment member 81. The second compensation spring 8 transmits force to the static contact piece through the adjustment member 81, so that it perfectly matches the preload of the first compensation spring 7 and the driving force of the moving iron core 93 to achieve the optimal initial contact pressure. If the lower contact is significantly worn, it is only necessary to rotate the adjustment member 81 again and compress the second compensation spring 8. The second compensation spring 8 increases its upward preload thrust on the lower contact piece 63. This thrust is transmitted through the lower contact piece 63 to compensate for the increase in gap and pressure loss caused by the wear of the lower contact. The continuous and adjustable upward preload applied to the lower contact piece 63 by the second compensation spring 8 not only compensates for wear, but also significantly enhances the anti-vibration ability of the lower contact piece in a vibration environment.

[0041] The following combination Figure 6-Figure 7The specific structure of the adjusting member, the second compensation spring and the lower contact piece is described in detail: the lower contact piece 63 has an intermediate bridging portion 632 connected between its two ends in a bridge structure, the lower contact is arranged on the intermediate bridging portion 632, one end of the lower contact piece 63 is fixed to the insulating baffle 61, and the other end is an adjusting end 631 threadedly connected to the adjusting member 81, and a threaded hole 64 is provided on the adjusting end 631. The adjusting member 81 is an adjusting screw connected to the threaded hole 64. The other end of the lower contact piece 63 cooperates with the adjusting screw to achieve elastic fixation, and is compressed or released when the adjusting member 81 is rotated and moved axially along the threaded hole 64. The second compensation spring 8 is placed, so that the pressure compensation amount applied by the second compensation spring 8 to the lower contact piece 63 can be adjusted. This structural setting enables the lower contact piece 63 to form a double-end constrained elastic beam structure. By constraining the two ends of the lower contact piece 63, the overall stiffness and natural frequency of the lower contact piece 63 are greatly improved, and the use of double-end support greatly suppresses the deflection or distortion of the contact piece when subjected to force, ensuring that the lower contact is almost vertically upward to withstand pressure, so that the pressure acting on the lower contact is evenly dispersed to the constraint points at both ends through the rigid contact piece body, avoiding local stress concentration and reducing the risk of plastic deformation of the contact piece itself, thereby optimizing stress distribution and extending the life of the contact piece.

[0042] like Figure 7 As shown, the connecting seat 82 includes a connecting cavity suitable for accommodating the second compensation spring 8 and the adjusting member 81, and a connecting hole 83 that communicates with the connecting cavity and the inner cavity of the iron cover and can be passed through by the adjusting member 81. The second compensation spring 8 is sleeved on the outside of the adjusting member 81, and its two ends respectively abut the connecting seat 82 and the head of the adjusting member 81. The adjusting member is also sleeved with a shock-absorbing component 86 located between the connecting seat and the lower contact piece. This shock-absorbing component 86 is made of rubber or elastic material in the shape of a sleeve, which can absorb vibration energy through its own elastic deformation, convert the vibration impact on the lower contact piece into flexible buffering, and significantly reduce the vibration The noise generated by movement is suppressed, abnormal structural noise is suppressed, and the quietness of the speaker is improved; a shield 84 covering the adjusting member 81 and the second compensation spring 8 is installed on the connecting seat 82, and a sealing ring 85 is provided between the connecting seat 82 and the iron cover 1. The self-sealing between the connecting seat 82 and the iron cover 1 is achieved by the sealing ring 85, and the entire connecting cavity opening is covered by the shield 84, which completely blocks the direct invasion of external dust, oil, liquid splashing, and mechanical collision into the connecting cavity and the inner cavity of the iron cover, forming multiple sealing protections. At the same time, after opening the shield, the pressure of the second compensation spring can be conveniently adjusted by operating the adjusting member 81.

[0043] In summary, the pitch (frequency) and loudness of the electric horn of this embodiment are highly dependent on the frequency and amplitude of the vibration of the hard diaphragm driven by the moving iron core 93, and this frequency is precisely controlled by the period of the contact on-off coil current. Therefore, this technical solution achieves the purpose of bidirectional independent compensation by designing two sets of spring compensation structures. Among them, the first compensation spring 7 can continuously compensate for the pressure loss on the side of the upper contact piece 62, and the second compensation spring 8 can compensate for the pressure loss on the side of the lower contact piece 63 through the pressure adjustment of the adjustment member 81. The coordinated control of the bidirectional pressure forms a dynamic-static dual elastic preload system, which effectively solves the problem of pressure attenuation caused by independent wear on both sides of the contact pair. It ensures that the contact pressure when the contact is closed can be accurately maintained within the optimal range regardless of the contact wear on either side. The pressure compensation is more comprehensive and thorough. The sufficient and stable contact pressure ensures: large contact area and low resistance when the upper and lower contacts are closed, and low heat generation when current passes. At the same time, it reduces the risk of abnormal high temperature caused by poor contact, which helps to reduce energy consumption and directly improves the service life and sound quality stability of the electric horn.

[0044] Obviously, the above embodiments are merely examples for clarity of explanation and are not intended to limit the implementation methods. Those skilled in the art will readily appreciate that other variations or modifications based on the above descriptions are possible. It is not necessary and impossible to enumerate all implementation methods here. Obvious variations or modifications arising therefrom remain within the scope of protection of the present invention.

Claims

1. A high-quality, low-energy, and long-life electric car horn, characterized in that: include: The upper assembly (100) comprises an iron cover assembly (101) and a sound producing assembly (102), wherein the iron cover assembly comprises an iron cover (1) and a static iron core (92) and a coil structure (91) fixedly arranged in the iron cover (1); the sound producing assembly comprises a sound producing diaphragm (2) and a moving iron core (93) fixedly arranged in the middle of the sound producing diaphragm (2); the outer peripheral edge of the sound producing diaphragm (2) is bent to form a rolled-up portion (21); the rolled-up portion (21) is covered and fastened to the outer side of the edge of the iron cover (1) by a riveting process, so that the sound producing diaphragm (2) and the iron cover (1) form a circumferentially sealed integrated structure, and the iron cover assembly and the sound producing assembly are assembled into an integral upper assembly (100) by riveting between the sound producing diaphragm (2) and the iron cover (1); The lower assembly (200) comprises a fixedly connected loudspeaker tube (4) and a mounting base (3), wherein the mounting base (3) has a central area for accommodating a sound producing assembly (102), and the sound producing assembly is mounted on the mounting base (3) via a buckling structure, so that the upper assembly (100) and the lower assembly (200) are connected via the buckling structure to form an integral electric loudspeaker assembly.

2. The high-quality, low-energy-consumption, long-life automobile electric horn according to claim 1, characterized in that The rolled portion (21) is a continuous ring-shaped rolled edge structure that is folded upward and formed on the outer peripheral edge of the pronunciation diaphragm (2). The edge of the iron cover (1) is formed into an annular flange (11) that is connected to the rolled edge structure. The rolled edge structure is covered on the annular flange (11) by riveting and combined with the annular flange (11) to form an uninterrupted locking edge structure (22).

3. The high-quality, low-energy-consumption, long-life automobile electric horn according to claim 1, characterized in that A sealing gasket (5) is provided between the sound diaphragm (2) and the iron cover (1). The sealing gasket (5) is clamped between the contact surface between the edge of the sound diaphragm (2) and the edge of the iron cover (1). After the rolled portion (21) is riveted and covered with the outer edge of the iron cover (1) and the sealing gasket (5), the sound diaphragm (2), the sealing gasket (5) and the iron cover (1) are tightly combined to form a continuous edge sealing layer.

4. The high-quality, low-energy-consumption, long-life automobile electric horn according to any one of claims 1 to 3, characterized in that The buckling structure comprises a buckling flange (31) arranged on the outer peripheral edge of the mounting base plate (3), and a buckling groove formed by the buckling flange (31); the locking edging structure (22) of the rolled portion (21) wrapped on the edge of the iron cover (1) is adapted to the buckling groove, and the locking edging structure (22) is elastically buckled in the buckling groove by extrusion.

5. The high-quality, low-energy-consumption, long-life automobile electric horn according to claim 4, characterized in that The cross-sectional shape of the buckling flange (31) is a barb shape, the locking edging structure (22) is embedded in the buckling groove to form a limited fit with the buckling flange (31), and the mounting base (3) is fixedly connected to the horn (4) through a welding structure or a snap-fit ​​structure, so that the mounting base (3) is clamped between the iron cover assembly and the horn (4); The mounting base plate (3) includes a center hole (32) opposite to the moving iron core (93) above and below, a conical surface structure (33) arranged around the center hole (32), an annular sealing groove formed on the periphery of the conical surface structure (33), and a buckling structure arranged on the outer peripheral edge of the mounting base plate (3), the annular sealing groove is filled with a sealing rubber layer (34) that cooperates with the sound diaphragm, a smooth rounded structure transition is set between the root of the conical surface structure (33) and the center hole (32), and the center hole (32) is connected to the acoustic cavity (41) of the speaker (4).

6. The high-quality, low-energy-consumption, long-life automobile electric horn according to claim 1, characterized in that The iron cover (1) is sealed and connected to the pronunciation diaphragm (2) to form an inner cavity of the iron cover for accommodating a static iron core (92), a moving iron core (93) and a coil structure (91); the static iron core (92) is fixed to the center of the inner surface of the iron cover (1) by a riveting structure; the coil structure is fixed to the static iron core (92) by a riveting structure to form an integral coil component; the moving iron core (93) is fixed to the center of the pronunciation diaphragm (2) by a riveting structure to form an integral diaphragm component; the electromagnetic force generated by the power supply of the coil structure (91) attracts the moving iron core (93) to make reciprocating motion along the axial direction of the coil structure (91).

7. The high-quality, low-energy-consumption, long-life automobile electric horn according to claim 1, characterized in that The iron cover assembly further comprises a contact assembly (6) integrated inside the iron cover (1), wherein the contact assembly (6) comprises: An insulating baffle (61) is fixed on the inner wall of the iron cover (1) and is provided with contact holes penetrating through both sides; A lower contact piece (63) is arranged on one side of the insulating blocking piece (61) and is provided with a lower contact head opposite to the contact through hole; An upper contact piece (62) is arranged on the other side of the insulating baffle (61), and is provided with an upper contact that can pass through the contact through hole and contact with the lower contact; the upper contact piece (62) is arranged on the movement path of the moving iron core (93), so that the upper contact piece (62) contacts or separates from the lower contact piece (63) under the drive of the moving iron core (93); The lower contact piece (63) and the upper contact piece (62) are respectively spring structures and are electrically connected to the electrical circuit of the coil structure (91); The pressure compensation structure comprises a first compensation spring (7) arranged between a coil structure and an upper contact piece (62), wherein the first compensation spring (7) is used for providing an elastic pre-pressure to the upper contact toward the lower contact.

8. The high-quality, low-energy-consumption, long-life automobile electric horn according to claim 7, characterized in that: The pressure compensation structure further comprises a connecting seat (82) arranged on the iron cover (1) and an adjusting member (81) extending through the adjusting seat into the iron cover (1) and being threadedly connected to the lower contact piece (63), and a second compensation spring (8) arranged between the adjusting member (81) and the connecting seat (82), wherein the second compensation spring (8) applies an upward elastic pre-pressure toward the upper contact piece (62) and is adjustable to the lower contact piece (63), and the adjusting member (81) is movably arranged relative to the lower contact piece (63) through a threaded structure, and when the adjusting member (81) moves, the second compensation spring (8) is compressed or released to adjust the elastic pre-pressure of the second compensation spring on the lower contact piece (63).

9. The high-quality, low-energy-consumption, long-life automobile electric horn according to claim 8, characterized in that: The lower contact piece (63) has an intermediate bridging portion (632) connected between its two ends in a bridge structure, and the lower contact is arranged on the intermediate bridging portion (632). One end of the lower contact piece (63) is fixed to the insulating baffle (61), and the other end is an adjusting end (631) threadedly connected to the adjusting member (81), so that the lower contact piece (63) forms a double-end constrained elastic beam structure, and a threaded hole (64) is provided on the adjusting end (631) for matching with the adjusting member (81). The compensating spring is compressed or released when the adjusting member (81) is rotated and moves axially along the threaded hole (64).

10. The high-quality, low-energy-consumption, long-life automobile electric horn according to claim 9, characterized in that: The connecting seat (82) includes a connecting cavity suitable for accommodating a second compensation spring (8) and an adjusting member (81), and a connecting hole (83) communicating with the connecting cavity and the inner cavity of the iron cover and allowing the adjusting member (81) to pass through. The second compensation spring (8) is sleeved on the outside of the adjusting member (81), and its two ends respectively abut against the connecting seat (82) and the head of the adjusting member. The adjusting member is sleeved with a shock-absorbing component (86) located between the connecting seat and the lower contact piece. A shield (84) covering the adjusting member (81) and the second compensation spring (8) is installed on the connecting seat (82), and a sealing ring (85) is provided between the connecting seat (82) and the iron cover (1).

11. The high-quality, low-energy-consumption, long-life automobile electric horn according to claim 7, characterized in that: One end of the upper contact piece (62) is fixed on the insulating baffle (61), and the other end is a movable end provided with an upper contact. A positioning protrusion protruding toward one side of the upper contact is provided on the coil skeleton of the coil structure (91), and the two ends of the first compensation spring (7) are respectively positioned on the positioning protrusion and the movable end of the upper contact piece (62).

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