High-quality, low-energy consumption and long-life automobile electric horn

Abstract

This invention discloses a high-quality, low-energy-consumption, long-life automotive electric horn, comprising an iron cover assembly consisting of an iron cover, a stationary iron core, and a coil structure, and a sound-producing assembly consisting of a sound-producing diaphragm and a moving iron core. The sound-producing diaphragm has a rolled-up portion formed by bending its outer periphery. This rolled-up portion is then wrapped and fastened to the outer edge of the iron cover using a riveting process, allowing the iron cover assembly and the sound-producing assembly to be riveted together into a single upper assembly. A lower assembly is formed by assembling the horn tube and a mounting base plate. The upper and lower assemblies are then joined together by a snap-fit ​​structure to form the electric horn assembly. This installation design eliminates the need for traditional screw connections or welding, requiring plastic rings, bolts, and other parts, reducing assembly complexity, simplifying the installation structure, facilitating automated production, reducing costs, lightening the overall product weight, and achieving reliable sealing, rust prevention, and structural rigidity, thereby improving the product's structural stability, acoustic performance, and long-term operational reliability.

Description

Technical Field

[0001] This invention belongs to the field of automotive parts, specifically relating to a high-quality, low-energy-consumption, long-life automotive electric horn. Background Technology

[0002] With the continuous advancement of automotive technology and consumers' increasing emphasis on vehicle comfort and safety, the stability and reliability of the electric horn, as an important component of automobiles, are receiving more and more attention. An electric horn is a loudspeaker that converts electrical signals into sound. During vehicle operation, it is used not only to emit necessary audible signals to warn pedestrians and attract the attention of other vehicles, but also to urge vehicles forward and transmit signals, playing an indispensable role in ensuring traffic safety.

[0003] There are many types of electric horns, mainly divided into two categories: snail horns and disc horns. The working principle of a snail horn is as follows: An electric horn mainly consists of a power connector, contact assembly, coil, diaphragm, moving iron core (armature), stationary iron core, iron cover, and horn tube. When the driver presses the horn switch, current flows through the contacts and coil. The coil generates magnetic force, causing the moving iron core and diaphragm to move. During this movement, the diaphragm drives the contact assembly to open, thus interrupting the current. The coil's magnetic force disappears, and the diaphragm, along with the moving iron core, returns to its original position under its own elasticity. The reset contact assembly then closes the circuit again. This cycle repeats, generating vibration and producing sound. Typically, cars use a combination of two electric horns with different frequencies: a low frequency of 410Hz and a high frequency of 510Hz. The frequency accuracy determines the horn's sound quality and volume. Traditional snail-shaped electric horns are typically assembled using two methods. Screw assembly involves using screws to connect the metal cap to the horn tube. However, screw assembly is prone to stripping and rusting, resulting in low assembly efficiency and poor installation reliability. This method also leads to poor sealing between the metal cap and the horn tube, causing air or water leakage, which reduces sound quality and shortens the product's lifespan. Adhesive assembly involves applying adhesive to the metal cap and then bonding it to the horn tube. While this eliminates the need for a plastic base plate, the adhesive is prone to aging and frequently detaches, significantly reducing product reliability. All of these methods increase production costs and management complexity. The above-described electric horn structure reveals the following problems: 1. The assembly method increases production costs and management complexity, impacting product reliability and stability. It involves a large number of parts, requires high assembly precision, hinders product automation and lightweighting, and increases costs. Therefore, it is necessary to optimize and improve the electric horn assembly method to enhance its quality, stability, and reliability. 2. During long-term, frequent use, the diaphragm vibrates and deforms, causing a decrease in pressure on the contacts. Furthermore, the long-term switching between contacts causes burning and wear, resulting in lower pressure when the contacts close, leading to poor contact, reduced current, quieter sound, and shortened lifespan. Abnormal contact pressure can also cause erratic vibration frequencies, abnormal sound quality, muffled sound, or pitch shift, further shortening the product's lifespan. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the problems of increased production cost and management complexity, large number of installation parts, complex production process, and impact on product reliability and stability caused by the assembly method used in the existing electric horn. Therefore, the present invention provides an electric car horn with a simple installation structure, reduced number of installation parts, easy automation production, reduced cost, and good structural stability.

[0005] To solve the above-mentioned technical problems, the present invention provides a high-quality, low-power, long-life automotive electric horn, comprising:

[0006] The upper assembly includes an iron cover assembly and a sound-producing assembly. The iron cover assembly includes an iron cover, a stationary iron core fixedly disposed within the iron cover, and a coil structure fixedly disposed within the stationary iron core. The sound-producing assembly includes a sound-producing diaphragm and a moving iron core fixedly disposed in the middle of the sound-producing diaphragm. The outer peripheral edge of the sound-producing diaphragm is bent into a rolled-up portion. The rolled-up portion is wrapped and fastened to the outer edge of the iron cover by an edge-wrapping and riveting process, so that the sound-producing diaphragm and the iron cover form a circumferentially sealed integrated structure. The iron cover assembly and the sound-producing assembly are assembled into an integral upper assembly by riveting the sound-producing diaphragm and the iron cover.

[0007] The lower assembly includes a fixedly connected horn tube and a mounting base plate. The mounting base plate has a central area for accommodating a sound-producing component. The sound-producing component is mounted on the mounting base plate via a snap-fit ​​structure, so that the upper assembly and the lower assembly are connected by the snap-fit ​​structure to form an integral electric horn assembly.

[0008] As a preferred embodiment, a sealing gasket is provided between the sound-producing diaphragm and the annular flange. The sealing gasket is clamped between the contact surfaces of the edge of the sound-producing diaphragm and the edge of the iron cover. After the rolled-up part is riveted and covers the outer edge of the iron cover and the sealing gasket, the sound-producing diaphragm, the sealing gasket and the iron cover are tightly combined to form a continuous edge sealing layer.

[0009] As a preferred embodiment, the rolled-up portion is a rolled edge structure in which the outer peripheral edge of the sound-producing diaphragm is folded upward to form a continuous ring shape. The edge of the iron cover is formed into an annular flange that cooperates with the rolled edge structure. The rolled edge structure is riveted and wrapped around the annular flange, and together with the annular flange, it forms a continuous locking edge structure.

[0010] As a preferred embodiment, the snap-fit ​​structure includes a snap-fit ​​flange disposed on the outer peripheral edge of the mounting base plate, and a snap-fit ​​groove formed by the snap-fit ​​flange. The locking edge structure covering the edge of the rolled-up portion is adapted to the snap-fit ​​groove, and the locking edge structure is elastically snapped into the snap-fit ​​groove by compression.

[0011] As a preferred embodiment, the cross-sectional shape of the fastening flange is barbed, the locking edge structure is embedded in the fastening groove to form a limiting fit with the fastening flange, and the mounting base plate is fixedly connected to the speaker tube through a welding structure or a snap-fit ​​structure, so that the mounting base plate is sandwiched between the iron cover assembly and the speaker tube, and the upper assembly composed of the sound-producing assembly and the iron cover assembly is connected to the lower assembly composed of the mounting base plate and the speaker tube by a snap-fit ​​connection.

[0012] As a preferred embodiment, the mounting base plate includes a central hole that is vertically opposite to the moving iron core and a conical surface structure surrounding the central hole, an annular sealing groove forming the periphery of the conical surface structure, and a snap-fit ​​structure disposed on the outer periphery of the mounting base plate. The annular sealing groove is filled with a sealing adhesive layer that mates with the sound-producing diaphragm. A smooth rounded corner structure is provided between the root of the conical surface structure and the central hole. The central hole communicates with the acoustic cavity of the speaker tube.

[0013] As a preferred embodiment, the iron cover is sealed to the sounding diaphragm to form an inner cavity that accommodates the stationary iron core, the moving iron core, and the coil structure. The stationary 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 stationary iron core by a riveting structure to form an integral coil component. The moving iron core is fixed to the center of the sounding diaphragm by a riveting structure to form an integral diaphragm component. The electromagnetic force generated by the coil structure when energized attracts the moving iron core to reciprocate along the axial direction of the coil structure.

[0014] As a preferred embodiment, the metal cover assembly further includes a contact component integrated inside the metal cover, the contact component comprising:

[0015] An insulating baffle is fixed inside the iron cover, and a contact through hole is opened on it to connect both sides;

[0016] The lower contact piece is located on one side of the insulating baffle and has a lower contact opposite to the contact through hole;

[0017] An upper contact piece is disposed on the other side of the insulating baffle. It has an upper contact that can pass through the contact through hole and engage with the lower contact. The upper contact piece is disposed on the movement path of the moving iron core, so that the upper contact piece can contact or separate from the lower contact piece under the drive of the moving iron core.

[0018] The lower contact piece and the upper contact piece are spring-loaded structures and are electrically connected in the electrical circuit of the coil structure;

[0019] The pressure compensation structure includes a first compensation spring disposed between the coil structure and the upper contact piece, the first compensation spring being used to provide an elastic preload to the upper contact toward the lower contact.

[0020] As a preferred embodiment, the pressure compensation structure further includes a connecting seat disposed on the iron cover and an adjusting member extending through the connecting seat into the iron cover and threadedly connected to the lower contact piece, as well as a second compensating spring disposed between the adjusting member and the connecting seat. The second compensating spring applies an adjustable upward elastic preload to the lower contact piece toward the upper contact piece. The adjusting member is movable relative to the lower contact piece via a threaded structure. When the adjusting member moves, it adjusts the elastic preload of the second compensating spring on the lower contact piece by compressing or releasing the second compensating spring.

[0021] As a preferred embodiment, the lower contact piece has an intermediate bridging portion connected between its two ends in a bridge-like structure. The lower contact is disposed 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 an elastic beam structure constrained at both ends. The adjusting end is provided with a threaded hole, and the adjusting member is an adjusting screw connected to the threaded hole. When the adjusting member is rotated and moved axially along the threaded hole, the second compensating spring is compressed or released.

[0022] As a preferred embodiment, the connecting seat includes a connecting cavity suitable for accommodating the second compensating spring and the adjusting member, and a connecting hole communicating with the connecting cavity and the inner cavity of the iron cover and allowing the adjusting member to pass through. The second compensating spring is sleeved on the outside of the adjusting member, and its two ends abut against the connecting seat and the head of the adjusting member, respectively. A shock-absorbing component is sleeved on the adjusting member between the connecting seat and the lower contact piece. A protective cover covering the adjusting member and the second compensating spring is installed on the connecting seat, and a sealing ring is provided between the connecting seat and the iron cover.

[0023] As a preferred embodiment, one end of the upper contact piece is fixed to the insulating baffle, and the other end is a movable end with an upper contact. The coil frame of the coil structure is provided with a positioning protrusion protruding toward the upper contact. The two ends of the first compensating spring are respectively positioned on the positioning protrusion and the movable end of the upper contact piece.

[0024] The technical solution of this invention has the following advantages compared with the prior art:

[0025] 1. In the automotive electric horn provided by this invention, the rolled-up portion of the sound-producing diaphragm is wrapped and fastened to the edge of the iron cover through an edge-wrapping and riveting process, thereby directly integrating the iron cover assembly and the sound-producing assembly into a sealed upper assembly. This eliminates the need for plastic rings, bolts, and other parts required by traditional screw connections or welding, greatly reducing the number of installation parts, lowering assembly complexity, and reducing the overall weight of the product. Meanwhile, the lower assembly, which is composed of the horn tube and the mounting base plate, is pre-assembled separately from the upper assembly. Then, the sound-producing assembly is installed onto the mounting base plate through a snap-fit ​​structure, thus directly snapping the upper and lower assemblies together to form a complete electric horn assembly. The core of the automotive electric horn structural design using this technical solution lies in achieving an integrated sealed connection of the upper components through the edge-wrapping and riveting process and convenient assembly of the upper and lower assemblies through the snap-fit ​​structure. This simplifies the installation structure, facilitates automated production, reduces costs, and achieves reliable sealing, rust prevention, structural rigidity, and stability, providing more stable structural support for good sound quality and improving the working performance and service life of the electric horn product.

[0026] 2. In the car electric horn provided by this invention, the sound-producing diaphragm is continuously and uniformly connected to the edge of the iron cover by riveting the rolled-up part, thus firmly combining the sound-producing diaphragm and the iron cover into a whole. Then, the assembled sound-producing diaphragm is assembled onto the mounting base plate by a snap-fit ​​structure, so that the sound-producing diaphragm, the iron cover and the mounting base plate maintain a reliable rigid connection to reduce vibration attenuation and avoid noise and air leakage caused by loose connection or poor sealing. This sound-producing diaphragm forms an integral rigid locking edge structure with the iron cover flange by continuous riveting, which provides higher rigidity and strength compared with the traditional single-point screw fixing, more uniform vibration energy transmission, and reduces local stress concentration at the edge of the diaphragm. It can better withstand the vibration and impact generated when the horn is working, reduce the relative displacement and fretting wear between components, thereby improving the structural stability, acoustic performance and long-term working reliability of the product.

[0027] 3. In the automotive electric horn provided by this invention, a sealing gasket is provided between the sound-producing diaphragm and the annular flange. The sealing gasket is clamped and riveted to generate a continuous elastic pre-tightening force, which can counteract the loosening of the contact surface caused by temperature changes or vibration. This makes the combination of the sound-producing diaphragm, the sealing gasket and the iron cover tighter and more stable, enhances the structural fit, improves the connection reliability, and reduces the structural gap during long-term use. This design forms a multi-layer sealing mechanism at the riveting joint of the sound-producing diaphragm and the iron cover. It can be divided into a first layer of sealing formed by the plastic deformation of the diaphragm edge and the iron cover flange through riveting, a second layer of sealing formed by the elastic body of the sealing gasket itself, and an overall sealing barrier formed by the rolled edge structure covering and pressing the three together. This significantly improves the sealing performance of the product and makes the product more reliable and durable.

[0028] 4. In the car electric horn provided by this invention, the diaphragm, folded upwards to form a rolled edge structure, covers the annular flange of the iron cover. This structure is then riveted together with the annular flange to form a seamless locking edge structure. This design offers 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 rolled edge of the diaphragm is uniformly and tightly wrapped and plastically deformed to conform to the contour of the annular flange under pressure, thus covering the edge of the iron cover to form a highly consistent circumferential seal, effectively isolating moisture. First, the protection level of the product is improved by preventing dust and corrosive media from entering the core area of ​​the speaker. Second, the annular flange of the iron cover acts as a rigid support, distributing the load transmitted by the rolled edge structure. This reduces the stress directly acting on the flat sound-producing area of ​​the diaphragm, lowers the risk of diaphragm fatigue cracking, extends the diaphragm's service life, and helps maintain the stability of the speaker's sound quality. Finally, in terms of assembly, the sealing and mechanical connection between the iron cover assembly and the sound-producing assembly can be completed by a single continuous annular riveting, realizing modular assembly, reducing material costs, and improving production efficiency.

[0029] 5. In the automotive electric horn provided by this invention, the locking edge structure of the sound-producing diaphragm is elastically engaged in the fastening groove by compression. Since the locking edge structure itself is a ring-shaped rigid structure, it forms a uniform circumferential contact with the surrounding fastening groove. The elastic pre-tightening force generated by compression makes the two tightly engaged, thereby realizing the fixed connection between the sound-producing diaphragm and the mounting base plate. Through the design of uniform circumferential force, it can effectively resist high-frequency vibration and bump impact during vehicle operation, prevent 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. Furthermore, this snap-fit ​​installation method does not require additional fasteners. During assembly, only the locking edge structure of the upper assembly needs to be aligned with the fastening groove, and the one-time snap-fit ​​fixation is achieved by pressure, which greatly reduces the assembly steps and the number of parts, facilitates maintenance, and significantly reduces after-sales maintenance costs.

[0030] 6. In the automotive electric horn provided by this invention, the first compensating spring is pre-compressed and installed between the inner wall of the iron cover and the upper contact piece. It not only provides pressure compensation but also absorbs and dissipates the vibration energy from the horn's own operation and the vibration energy transmitted by the vehicle. When the sounding diaphragm undergoes slight deformation due to long-term vibration or the contact wears down, resulting in a weakening of the contact pressure, the pre-pressure of the first compensating spring automatically fills this lost pressure, maintaining a stable total contact pressure and ensuring that the contacts remain in tight and sufficient physical contact when closed. The first compensating spring is designed to compensate for the pressure attenuation on the upper contact piece side caused by diaphragm deformation or upper contact wear. This ensures that throughout the entire product life cycle, regardless of diaphragm deformation or contact wear, the contact pressure when the contacts are closed can be maintained within the optimal design range, avoiding increased contact resistance, overheating, or even contact failure due to insufficient pressure.

[0031] 7. In the automotive electric horn provided by this invention, since wear of the lower contact also leads to an increase in the contact gap and a decrease in pressure, the structural design of the second compensating spring and the adjusting component is mainly used to compensate for the pressure attenuation on the lower contact plate side. With this structural setting, the initial pre-pressure of the second compensating spring on the lower contact plate can be precisely adjusted by rotating the adjusting component, so that it is perfectly matched with the pre-pressure of the first compensating spring and the driving force of the moving iron core to achieve the optimal initial contact pressure. If the lower contact wear is significant, it is only necessary to rotate the adjusting component again and compress the second compensating spring. The second compensating spring increases its upward pre-pressure thrust on the lower contact plate. This thrust is transmitted through the lower contact plate to compensate for the increase in gap and pressure loss caused by the wear of the lower contact. It not only compensates for wear, but also significantly enhances the anti-flutter ability of the lower contact plate in a vibration environment.

[0032] 8. In the car electric horn provided by this invention, since 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 coil current switching on and off at the contact, this technical solution achieves bidirectional independent compensation by designing two sets of spring compensation structures. The first compensation spring can continuously compensate for the pressure loss on the upper contact side, and the second compensation spring, in conjunction with the pressure adjustment of the adjusting component, can compensate for the pressure loss on the lower contact side. Through the coordinated control of bidirectional pressure, a dynamic-static dual elastic pre-pressure system is formed, which effectively solves the problem of pressure attenuation caused by independent wear on both sides of the contact pair, ensuring that the contact pressure when the contact is closed can be precisely maintained within the optimal range regardless of which side of the contact is worn, and the pressure compensation is more comprehensive and thorough. Attached Figure Description

[0033] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the accompanying drawings used in the description of the specific embodiments or the prior art will be briefly introduced below.

[0034] Figure 1 A three-dimensional structural schematic diagram of the automobile electric horn provided by the present invention;

[0035] Figure 2 This is a schematic diagram of the split structure of the car electric horn of the present invention;

[0036] Figure 3 This is an exploded schematic diagram of the car electric horn of the present invention.

[0037] Figure 4 This is a cross-sectional schematic diagram of the car electric horn of the present invention;

[0038] Figure 5 for Figure 4 A partially enlarged structural diagram of location A shown in the figure;

[0039] Figure 6 This is a schematic diagram of the contact assembly of the present invention;

[0040] Figure 7 This is a schematic diagram of the contact component and pressure compensation structure of the present invention;

[0041] Figure 8 This is a schematic diagram of the mounting base plate and the speaker tube of the present invention.

[0042] Explanation of reference numerals in the attached drawings: 1. Iron cover; 11. Annular flange; 2. Diaphragm; 21. Roll-up part; 22. Locking edge structure; 3. Mounting base plate; 31. Snap-fit ​​flange; 32. Center hole; 33. Conical surface structure; 34. Sealing layer; 4. Horn tube; 41. Acoustic cavity; 5. Sealing gasket; 6. Contact assembly; 61. Insulating baffle; 62. Upper contact piece; 63. Lower contact piece; 631. Adjusting end; 632. Intermediate bridging part; 64. Threaded hole; 7. First compensating spring; 8. Second compensating spring; 81. Adjusting component; 82. Connecting seat; 83. Connecting hole; 84. Protective cover; 85. Sealing ring; 86. Vibration damping component; 91. Coil structure; 92. Static iron core; 93. Moving iron core; 100. Upper assembly; 101. Iron cover assembly; 102. Sounding assembly; 200. Lower assembly. Detailed Implementation

[0043] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0044] In the description of this invention, it should be noted that the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0045] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0046] Example

[0047] This embodiment provides, as follows: Figures 1-8 The high-quality, low-power, long-life car horn shown includes:

[0048] 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 stationary iron core 92 fixedly disposed inside the iron cover 1, and a coil structure 91 fixedly disposed in the stationary iron core 92. The sound-producing assembly 102 includes a sound-producing diaphragm 2 and a moving 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-up portion 21. The rolled-up portion 21 is wrapped and fastened to the outer edge of the iron cover 1 by a wrapping and 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.

[0049] The lower assembly 200 includes a fixedly connected horn tube 4 and a mounting base plate 3, which connect the horn tube 4 and the mounting base plate 3 to form a closed horn cavity. The mounting base plate 3 has a central area for accommodating the sound-producing component 102. The sound-producing component 102 is mounted on the mounting base plate 3 by a snap-fit ​​structure, so that the upper assembly 100 and the lower assembly 200 are connected by a snap-fit ​​structure to form an integral electric horn assembly.

[0050] In the above embodiment, the rolled-up portion 21 of the sound-producing diaphragm 2 is wrapped and fastened to the edge of the iron cover 1 by an edge-wrapping and riveting process, thereby directly integrating the iron cover assembly 101 and the sound-producing assembly 102 into a sealed upper assembly 100. This eliminates the need for plastic rings, bolts, and other parts required by traditional screw connections or welding, greatly reducing the number of installation parts, lowering assembly complexity, and directly reducing the overall weight of the product. Meanwhile, the lower assembly, composed of the speaker tube 4 and the mounting base plate 3, is pre-assembled separately from the upper assembly 100, improving the assembly effect. The sound-producing components are then installed onto the mounting base plate 3 via a snap-fit ​​structure. The upper assembly 100 and the lower assembly 200 are directly snapped together to form a complete electric horn assembly. The core of the automotive electric horn structural design using this technical solution lies in achieving an integrated sealed connection of the upper components through an edge-wrapping and riveting process and in facilitating the assembly of the upper and lower assemblies through a snap-fit ​​structure. This simplifies the installation structure, facilitates automated production, reduces costs, and achieves reliable sealing, rust prevention, structural rigidity, and stability. It provides a more stable structural support for good sound quality and improves the performance of the electric horn product.

[0051] The following is combined with Figures 2-5 The specific arrangement between the sound-producing diaphragm and the metal cover is explained in detail:

[0052] The rolled-up portion 21 is a rolled edge structure formed by folding upwards and forming a continuous ring shape on the outer periphery of the sound-producing diaphragm 2. The edge of the iron cover 1 is formed into an annular flange 11 that mates with the rolled edge structure. The rolled edge structure is riveted and wrapped around the annular flange 11, forming a seamless 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 structure 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 sound-producing diaphragm 2 is uniformly and tightly wrapped and molded under pressure. The deformable shape conforms to the contour of the annular flange 11, thereby covering the edge of the iron cover 1 to form a highly consistent circumferential seal, effectively preventing moisture, dust, and corrosive media from entering the core area of ​​the speaker, greatly improving the dustproof and waterproof rating of the product. Secondly, the annular flange 11 of the iron cover 1 acts as a rigid support, distributing the load transmitted by the rolled edge structure. This reduces the stress directly acting on the flat sound-producing area of ​​the diaphragm 2, lowers the risk of diaphragm fatigue cracking, extends the diaphragm's service life, and helps maintain the stability of the speaker's sound quality. Finally, in terms of assembly, the sealing and mechanical connection between the iron cover assembly 101 and the sound-producing assembly 102 can be completed by a single continuous annular riveting, simplifying the structure, realizing modular assembly, reducing material costs, and improving production efficiency.

[0053] To improve the sealing performance of the sound-producing assembly 102 and the iron cover assembly 101 after riveting connection, refer to Figure 5 A sealing gasket 5 is provided between the sound-producing diaphragm 2 and the annular flange 11. The sealing gasket 5 is clamped between the contact surfaces of the edge of the sound-producing diaphragm 2 and the edge of the iron cover 1. After the rolled-up part 21 is riveted and covers the outer edge of the iron cover 1 and the sealing gasket 5, the sound-producing 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 counteract the loosening of the contact surface caused by temperature changes or vibration, so that the sound-producing diaphragm 2 and the sealing gasket 11 are tightly combined. The tighter and more stable connection between ring 5 and iron cover 1 enhances the structural fit, improves connection reliability, and reduces structural gaps during long-term use. This structural design creates a multi-layer sealing mechanism at the riveted joint of the sound diaphragm 2 and iron cover 1. It can be divided into the first layer of sealing formed by the plastic deformation of the diaphragm edge and the iron cover flange through riveting, the second layer of sealing formed by the elasticity of the sealing gasket itself, and the overall sealing barrier formed by the rolled edge structure covering and pressing the three together. This significantly improves the product's sealing performance and makes the product more reliable and durable.

[0054] The following is combined with Figures 1-4 The specific configuration of the clamping structure for the upper and lower assemblies is explained in detail:

[0055] The mounting base plate 3 is a plastic base plate structure, preferably fixedly connected to the top of the speaker tube by a welding structure, or a snap-fit ​​structure can be used to achieve a fixed connection between the mounting base plate 3 and the speaker tube 4. More preferably, the snap-fit ​​structure includes a snap-fit ​​flange 31 located on the outer periphery of the mounting base plate 3, and a snap-fit ​​groove formed by the snap-fit ​​flange 31. The locking edge structure 22, which covers the edge of the rolled-up portion 21, is adapted to the snap-fit ​​groove. The locking edge structure 22 is elastically engaged in the snap-fit ​​groove by compression. Specifically, the cross-sectional shape of the snap-fit ​​flange 31 is barbed. The locking edge structure 22 is embedded in the snap-fit ​​groove and forms a limiting fit with the snap-fit ​​flange 31, so that the mounting base plate 3 is sandwiched between the iron cover assembly and the speaker tube 4. The upper assembly 100, composed of the sound-producing assembly and the iron cover assembly, is connected to the mounting base plate 3 and the speaker tube 4. The lower assembly 200 is connected by a snap-fit ​​connection along the axial direction. The advantage of this installation design is that, since the locking edge structure 22 itself is a ring-shaped rigid structure, it forms a uniform circumferential contact with the surrounding snap-fit ​​groove. The elastic pre-tightening force generated by compression makes the two tightly snap together, thereby achieving a fixed connection between the sound diaphragm 2 and the mounting base plate 3. Through the design of uniform circumferential force, it can effectively resist high-frequency vibration and bump impact during vehicle operation, preventing the upper assembly 100 and the lower assembly 200 from loosening due to vibration, ensuring the connection stability of the overall structure under complex working conditions. Furthermore, this snap-fit ​​installation method does not require additional fasteners. During assembly, only the locking edge structure of the sound component needs to be aligned with the snap-fit ​​groove, and a one-time snap-fit ​​fixation is achieved through pressure, which greatly reduces the assembly steps and the number of parts. The snap-fit ​​structure can be separated by applying a reverse force with a special tool, which is convenient for disassembly and maintenance, and greatly reduces after-sales maintenance costs.

[0056] In this embodiment, the iron cover 1 and the sound-producing diaphragm 2 are sealed together to form an inner cavity of the iron cover that accommodates the stationary iron core 92, the moving iron core 93, and the coil structure 91. The stationary 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 frame and a coil coil. The coil structure 91 is fixed to the stationary 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 sound-producing diaphragm 2 by a riveting structure to form an integral diaphragm component. The electromagnetic force generated by the coil structure 91 when energized attracts the moving iron core 93 to reciprocate along the axial direction of the coil structure 91. The integral coil component and the integral diaphragm component are modularly pre-assembled. The final assembly only requires riveting the pre-components into the iron cover, simplifying the installation process and achieving highly integrated installation. Finally, through the sealed inner cavity and triple riveting modular construction, an electromagnetic acoustic system with high rigidity, excellent magnetic circuit, tight sealing, long life, and easy production is constructed.

[0057] As a preferred implementation method, combined with Figure 4 and Figure 8As shown, the mounting base plate 3 includes a central hole 32 opposite to the moving iron core 93, a conical surface structure 33 surrounding the central hole 32, an annular sealing groove formed around the conical surface structure 33, and a snap-fit ​​structure on the outer periphery of the mounting base plate 3. The annular sealing groove is filled with a sealing adhesive layer 34 that mates with the sound-producing diaphragm. The snap-fit ​​structure includes a snap-fit ​​flange 31 and a snap-fit ​​groove. The central hole 32 connects to the acoustic cavity 41 of the speaker tube 4. A smooth rounded corner structure is provided between the root of the conical surface structure 33 and the central hole 32 to facilitate the elimination of airflow separation vortices and reduce turbulent noise. The central hole 32, which penetrates the mounting base plate 3, provides a guide channel for the axial reciprocating motion of the moving iron core 93. After the sound-producing diaphragm 2 and the iron cover 1 are integrated, they are installed onto the mounting base plate 3 through a snap-fit ​​structure. The sealing adhesive layer 34 in the annular sealing groove cooperates with the sound-producing diaphragm 2 to form an annular sealing band, ensuring the sealing between the sound-producing diaphragm 2 and the mounting base plate 3. This effectively prevents external air from leaking from the contact surface between the mounting base plate and the sound-producing diaphragm, while also supporting the edge of the sound-producing diaphragm to ensure uniform circumferential tension. The conical surface structure 33 converts the piston-like vibration of the sound-producing diaphragm 2 into a spherical wave. When the sound-producing diaphragm vibrates, the moving iron core 93 drives the airflow through the central hole 32 to impact the conical surface. The conical surface reflects and diffuses the axial airflow into a spherical wave, which resonates and couples with the acoustic cavity of the speaker tube 4, significantly improving the sound energy transmission efficiency and sound pressure level.

[0058] Considering that the contact pressure of a car horn may decrease due to slight deformation of the diaphragm or wear of the contacts during frequent use, a contact component 6 is designed to compensate for this pressure loss. This is a preferred design approach, combined with... Figures 4-8As shown, the contact assembly 6 is integrated inside the iron cover and includes an insulating baffle 61, a lower contact piece 63, an upper contact piece 62, a terminal block, and a pressure compensation structure. The insulating baffle 61 is fixed to the inner wall of the iron cover 1 and has a through-hole extending through both sides. The lower contact piece 63 is located on one side of the insulating baffle 61 and has a lower contact opposite to the through-hole. The upper contact piece 62 is located on the other side of the insulating baffle 61 and has an upper contact that can pass through the through-hole and engage with the lower contact. The upper contact piece 62 is elastically movable relative to the lower stationary contact piece and is positioned on the movement path of the moving iron core 93, allowing it to contact or separate 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 spring-loaded structures, connected in parallel... 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 disposed between the coil structure and the upper contact piece 62. The first compensation spring 7 is used to provide elastic preload to the upper contact towards the lower contact. One end of the upper contact piece 62 is fixed to the insulating baffle 61, and the other end is a movable end with an upper contact. The coil frame of the coil structure 91 is provided with a positioning protrusion protruding towards 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 riveting protrusion on which the upper contact is riveted to the movable end. This design serves to position and install the first compensation spring 7. The working principle of this electric horn is as follows: When the horn switch is pressed, current flows through the contact and the coil structure 91. The coil structure 91 generates electromagnetic force to drive the moving iron core 93 and the sound-producing diaphragm 2 to move. The sound-producing diaphragm 2 then drives the upper contact piece 62 to move, thereby disconnecting the contact between the lower and upper contact pieces. This disconnects the current and causes the magnetic force of the coil structure to disappear. At this time, the sound-producing diaphragm 2, under its own elastic action, drives the moving iron core 93 to reset. After the upper contact piece 62 separates from the moving iron core 93, it immediately elastically deforms and resets, closing the contact and reconnecting the circuit. The electric horn repeats this cycle to generate vibration and thus produce sound.

[0059] The advantage of adopting the above-mentioned pressure compensation structure design is that, by pre-compressing the first compensation spring 7 between the inner wall of the iron cover and the upper contact piece 62, the first compensation spring 7 applies a force that presses the upper contact towards the lower contact. This first compensation spring 7 not only provides pressure compensation, but also absorbs and dissipates the vibration energy from the horn's own operating vibration and the vibration energy transmitted by the vehicle. When the sound diaphragm 2 undergoes slight deformation due to long-term vibration or the contact wears down, resulting in a weakening of the contact pressure, the pre-pressure of the first compensation spring 7 automatically compensates for this lost pressure, maintaining the stability of the total contact pressure and ensuring that the contact remains tight and sufficient when closed. This technical solution designs the first compensation spring 7 mainly to compensate for the pressure attenuation on the upper contact piece side, thus ensuring that throughout the entire product life cycle, 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 occurrence of increased contact resistance, overheating, or even contact failure due to insufficient pressure.

[0060] Wear of the lower contact of the lower contact piece 63 can also lead to an increase in the contact gap and a decrease in pressure. Therefore, the pressure compensation structure also includes a connecting seat 82 disposed on the iron cover 1, an adjusting member 81 extending through the adjusting seat into the iron cover 1 and threadedly connected to the lower contact piece 63, and a second compensating spring 8 disposed between the adjusting member 81 and the connecting seat 82. The second compensating spring 8 applies an adjustable upward elastic preload to the lower contact piece 63 toward the upper contact piece 62. The adjusting member 81 is movable relative to the lower contact piece 63 by means of a threaded structure. When the adjusting member 81 moves, it adjusts the elastic preload of the second compensating spring 8 on the lower contact piece 63 by compressing or releasing the second compensating spring 8. The advantage of this design is that the second compensating spring 8 and the adjusting member 81 are mainly used to compensate for the pressure attenuation on the lower contact piece 63 side. With this structure, the initial pre-pressure of the second compensating spring 8 on the lower contact piece 63 can be precisely adjusted by rotating the adjusting member 81. The second compensating spring 8 transmits force to the stationary contact piece through the adjusting member 81, so that it is perfectly matched with the pre-pressure of the first compensating spring 7 and the driving force of the moving iron core 93, achieving the optimal initial contact pressure. If the lower contact wears significantly, the adjusting member 81 can be rotated again and the second compensating spring 8 can be compressed. The second compensating spring 8 increases its upward pre-pressure thrust on the lower contact piece 63. This thrust is transmitted through the lower contact piece 63 and can compensate for the increased gap and pressure loss caused by the wear of the lower contact. The continuous and adjustable upward pre-pressure applied to the lower contact piece 63 by the second compensating spring 8 not only compensates for wear, but also significantly enhances the anti-flutter ability of the lower contact piece in a vibration environment.

[0061] The following is combined with Figures 6-7The specific structures of the adjusting member, the second compensating spring, and the lower contact piece are described in detail: The lower contact piece 63 has an intermediate bridging portion 632 connected between its two ends in a bridge-like structure. The lower contact is disposed 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. The adjusting end 631 is provided with a threaded hole 64. 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. When the adjusting member 81 is rotated and moved axially along the threaded hole 64, it is compressed or released. The second compensating spring 8 is placed, thereby adjusting the amount of pressure compensation applied by the second compensating spring 8 to the lower contact piece 63. This structural arrangement makes the lower contact piece 63 a double-ended elastic beam structure. By constraining both ends of the lower contact piece 63, the overall stiffness and natural frequency of the lower contact piece 63 are greatly improved. The double-ended support greatly suppresses the deflection or twisting of the contact piece under force, ensuring that the lower contact bears the pressure almost vertically upward. The pressure acting on the lower contact is evenly distributed to the constraint points at both ends through the rigid contact piece body, avoiding local stress concentration, reducing the risk of plastic deformation of the contact piece itself, thereby optimizing stress distribution and extending the life of the contact piece.

[0062] like Figure 7 As shown, the connecting seat 82 includes a connecting cavity suitable for accommodating the second compensating spring 8 and the adjusting member 81, and a connecting hole 83 connecting the connecting cavity and the inner cavity of the iron cover, allowing the adjusting member 81 to pass through. The second compensating spring 8 is sleeved on the outside of the adjusting member 81, with its two ends abutting against the connecting seat 82 and the head of the adjusting member 81, respectively. 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, converting the vibration impact on the lower contact piece into a flexible buffer, significantly reducing the impact caused by vibration. The noise generated by the movement is suppressed, the structural noise is inhibited, and the quietness of the speaker operation is improved; a cover 84 is installed on the connecting seat 82 to cover the adjusting component 81 and the second compensating spring 8, and a sealing ring 85 is provided between the connecting seat 82 and the iron cover 1. The sealing ring 85 achieves self-sealing between the connecting seat 82 and the iron cover 1. The cover 84 covers the entire opening of the connecting cavity, completely shielding the direct intrusion of external dust, oil, liquid splashes, and mechanical collisions into the connecting cavity and the inner cavity of the iron cover, forming multiple sealing protections. At the same time, after opening the cover, the pressure of the second compensating spring can be easily adjusted by operating the adjusting component 81.

[0063] In summary, the pitch (frequency) and loudness of the electric horn in this embodiment are highly dependent on the frequency and amplitude of the vibration of the hardened diaphragm driven by the moving iron core 93. This frequency is precisely controlled by the period of the coil current switching on and off at the contact points. Therefore, this technical solution achieves bidirectional independent compensation by designing two sets of spring compensation structures. The first compensation spring 7 can continuously compensate for the pressure loss on the upper contact plate 62 side, and the second compensation spring 8, in conjunction with the pressure adjustment of the adjusting member 81, can compensate for the pressure loss on the lower contact plate 63 side. Through the coordinated control of bidirectional pressure, a dynamic-static dual elastic pre-pressure system is formed, which effectively solves the problem of pressure attenuation caused by independent wear on both sides of the contact pair. This ensures that regardless of which side of the contact wears, the contact pressure when the contact is closed can be precisely maintained within the optimal range. The pressure compensation is more comprehensive and thorough. Sufficient and stable contact pressure can ensure that the contact area is large and the resistance is low when the upper and lower contacts are closed, and the heat generation is low when current flows. 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 entire electric horn.

[0064] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.

Claims

1. A high-quality, low-energy-consumption, long-life automotive electric horn, characterized in that: include: The upper assembly (100) includes an iron cover assembly (101) and a sound-producing assembly (102). The iron cover assembly includes an iron cover (1) and a stationary iron core (92) and a coil structure (91) fixedly disposed inside the iron cover (1). The sound-producing assembly includes a sound-producing diaphragm (2) and a moving 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-up part (21). The rolled-up part (21) is wrapped and fastened to the outer edge of the iron cover (1) by a wrapping and riveting process, so that the sound-producing diaphragm (2) and the iron cover (1) form a circumferentially sealed integrated structure. 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) includes a fixedly connected horn tube (4) and a mounting base plate (3), the mounting base plate (3) having a central area for accommodating a sound-producing component (102), the sound-producing component being mounted on the mounting base plate (3) by a snap-fit ​​structure, so that the upper assembly (100) and the lower assembly (200) are connected by a snap-fit ​​structure to form an integral electric horn assembly; A sealing gasket (5) is provided between the sound-producing diaphragm (2) and the iron cover (1). The snap-fit ​​structure includes a snap-fit ​​flange (31) provided on the outer periphery of the mounting base plate (3) and a snap-fit ​​groove formed by the snap-fit ​​flange (31). The locking edge structure (22) covering the edge of the iron cover (1) of the rolled-up part (21) is adapted to the snap-fit ​​groove. The locking edge structure (22) is elastically snapped into the snap-fit ​​groove by compression. The mounting base plate (3) includes a central hole (32) that is vertically opposite to the moving iron core (93) and a conical surface structure (33) provided around the central hole (32). An annular sealing groove is formed on the periphery of the conical surface structure (33) and a snap-fit ​​structure provided on the outer periphery of the mounting base plate (3). The annular sealing groove is filled with a sealing adhesive layer (34) that cooperates with the sound-producing diaphragm. The iron cover assembly also includes a contact component (6) integrated inside the iron cover (1), the contact component (6) comprising: An insulating baffle (61) is fixed on the inner wall of the iron cover (1), and a contact through hole is provided on it that passes through both sides; The lower contact piece (63) is disposed on one side of the insulating baffle (61) and has a lower contact opposite to the contact through hole; The upper contact piece (62) is disposed on the other side of the insulating baffle (61), and it is provided with an upper contact that can pass through the contact through hole and engage with the lower contact; the upper contact piece (62) is disposed 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 spring-loaded structures and are electrically connected to the electrical circuit of the coil structure (91); The pressure compensation structure includes a first compensation spring (7) disposed between the coil structure and the upper contact piece (62), the first compensation spring (7) being used to provide an elastic preload towards the lower contact to the upper contact.

2. The high-quality, low-energy-consumption, long-life automotive electric horn according to claim 1, characterized in that... The rolled-up part (21) is a rolled edge structure formed by folding upwards and forming a continuous ring shape on the outer periphery of the sound 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 a continuous locking edge structure (22).

3. The high-quality, low-energy-consumption, long-life automotive electric horn according to claim 1, characterized in that... The sealing gasket (5) is clamped between the contact surfaces of the edge of the sound diaphragm (2) and the edge of the iron cover (1). After the rolled-up part (21) is riveted and covers 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 automotive electric horn according to claim 1, characterized in that... The cross-sectional shape of the fastening flange (31) is hook-shaped. The locking edge structure (22) is embedded in the fastening groove and forms a limiting fit with the fastening flange (31). The mounting base plate (3) is fixedly connected to the horn tube (4) through a welding structure or a snap-fit ​​structure, so that the mounting base plate (3) is sandwiched between the iron cover assembly and the horn tube (4). A smooth rounded corner structure is provided between the root of the conical surface structure (33) and the center hole (32). The center hole (32) is connected to the acoustic cavity (41) of the horn tube (4).

5. The high-quality, low-energy-consumption, long-life automotive electric horn according to claim 1, characterized in that... The iron cover (1) and the sound-producing diaphragm (2) are sealed together to form an inner cavity of the iron cover that accommodates the stationary iron core (92), the moving iron core (93) and the coil structure (91). The stationary 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 stationary iron core (92) by a riveting structure to form an integral coil. The moving iron core (93) is fixed to the center of the sound-producing diaphragm (2) by a riveting structure to form an integral diaphragm. The electromagnetic force generated by the coil structure (91) attracts the moving iron core (93) to reciprocate along the axial direction of the coil structure (91).

6. The high-quality, low-energy-consumption, long-life automotive electric horn according to claim 1, characterized in that: The pressure compensation structure also includes a connecting seat (82) disposed on the iron cover (1) and an adjusting member (81) extending through the adjusting seat into the iron cover (1) and threadedly connected to the lower contact piece (63), and a second compensating spring (8) disposed between the adjusting member (81) and the connecting seat (82). The second compensating spring (8) applies an adjustable upward elastic preload to the lower contact piece (63) toward the upper contact piece (62). The adjusting member (81) is movable relative to the lower contact piece (63) by means of a threaded structure. When the adjusting member (81) moves, it adjusts the elastic preload of the second compensating spring on the lower contact piece (63) by compressing or releasing the second compensating spring (8).

7. The high-quality, low-energy-consumption, long-life automotive electric horn according to claim 6, characterized in that: The lower contact piece (63) has an intermediate bridging portion (632) that is connected between its two ends in a bridge-like structure. The lower contact is disposed 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) that is threadedly connected to the adjusting member (81), so that the lower contact piece (63) forms an elastic beam structure with both ends constrained. The adjusting end (631) is provided with a threaded hole (64) that is connected to the adjusting member (81). The compensating spring is compressed or released when the adjusting member (81) is rotated and moved axially along the threaded hole (64).

8. The high-quality, low-energy-consumption, long-life automotive electric horn according to claim 7, characterized in that: The connecting seat (82) includes a connecting cavity suitable for accommodating the second compensating spring (8) and the adjusting member (81), and a connecting hole (83) connecting the connecting cavity and the inner cavity of the iron cover (1) and allowing the adjusting member (81) to pass through. The second compensating spring (8) is sleeved on the outside of the adjusting member (81), and its two ends abut against the connecting seat (82) and the head of the adjusting member, respectively. The adjusting member is sleeved with a shock-absorbing component (86) located between the connecting seat and the lower contact piece. The connecting seat (82) is equipped with a cover (84) that covers the adjusting member (81) and the second compensating spring (8), and a sealing ring (85) is provided between the connecting seat (82) and the iron cover (1).

9. The high-quality, low-energy-consumption, long-life automotive electric horn according to claim 1, 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 with an upper contact. The coil frame of the coil structure (91) is provided with a positioning protrusion protruding towards the upper contact. The two ends of the first compensating spring (7) are respectively positioned on the positioning protrusion and the movable end of the upper contact piece (62).

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