Tone alert

Abstract

The utility model relates to a prompt sound alarm, including the casing, the outer peripheral wall of casing is protruding and is provided with the mounting boss of trapezoidal structure, the mounting boss includes with the mounting surface fixed connection of mounting panel, the mounting panel is composed of damping part and connecting portion, connecting portion with mounting boss fixed connection, damping part includes the extension plate, the extension plate both ends are formed with fixed plate and inclined plate to the same side bending, inclined plate and connecting portion integral connection. Adopt above -mentioned technical scheme, through the unique structure of mounting panel, effectively buffer and absorb the vibration of whole car, the mounting panel is pasted with mounting boss through connecting portion, not only is convenient for the positioning fixation of installation time, can more whole car vibration transmission to damping part, after the vibration that connecting portion received transmission, because the fixed plate and inclined plate in damping part are bent to the same side of extension plate, it has certain elasticity, can absorb and dissipate vibration energy.

Description

Technical Field

[0001] This utility model belongs to the field of alarm technology, and in particular relates to a sound alarm. Background Technology

[0002] Heavy trucks weighing 12 tons or more, especially engineering vehicles, dump trucks, and dump trucks operating in urban areas, often cause traffic accidents involving pedestrians and non-motorized vehicles when making right turns due to the large area affected by the turn and the driver's blind spots to some extent. Therefore, trucks in the current technology are often equipped with right-turn alarms to avoid traffic accidents.

[0003] To meet sound pressure level requirements, existing right turn alarms are typically quite large, which may interfere with the installation location already set up on the customer's vehicle model, making installation impossible. In addition, vibrations from the entire vehicle can easily cause resonance when transmitted to the alarm, leading to damage to the alarm. Utility Model Content

[0004] The purpose of this utility model is to overcome the defects of the prior art by providing a warning sound alarm, which solves the problem that the right turn alarm is large in size and prone to resonance in the whole vehicle.

[0005] The technical solution of this utility model is as follows: a sound alarm device, comprising a housing, a sound-generating unit, a circuit board, and a mounting plate. The sound-generating unit and the circuit board are both fixedly disposed within the housing. The circuit board is electrically connected to the sound-generating unit. The housing has a cylindrical structure with a front cover at its front opening. A cavity is provided on the front cover, which is mounted on the housing, and the sound-generating unit is placed within the cavity. The outer peripheral wall of the housing has a trapezoidal mounting boss protruding from it. The mounting boss includes a mounting surface that is fixedly connected to a mounting plate. The mounting plate is composed of a vibration damping part and a connecting part. The connecting part is fixedly connected to the mounting boss. The vibration damping part includes an extension plate. Both ends of the extension plate are bent to the same side to form a fixing plate and an inclined plate. The inclined plate is integrally connected to the connecting part.

[0006] By adopting the above technical solution, the unique structure of the mounting plate effectively buffers and absorbs the vibration of the entire vehicle. The mounting plate, through the fit between the connecting part and the mounting boss, not only facilitates positioning and fixing during installation, but also transmits the vibration of the entire vehicle to the vibration damping part. After the connecting part receives the transmitted vibration, the fixed plate and inclined plate in the vibration damping part bend to the same side as the extension plate, which has a certain elasticity and can absorb and dissipate vibration energy. This effectively prevents the natural frequency of the alarm from coinciding with the vibration frequency of the entire vehicle, thereby avoiding the occurrence of resonance. At the same time, it also reduces the vibration amplitude transmitted to the internal components of the housing, improving product reliability and service life. Furthermore, by integrating the sound cavity of the sound-emitting unit into the front cover, the sound-emitting unit can play a sound enhancement role, ensuring the effectiveness of the core alarm function.

[0007] A further feature of this invention is as follows: a rear cover is fixedly installed at the rear opening of the housing, and a connector is integrally formed on the rear cover. The connector has a connector groove on the outer side of the housing, and the connector groove has an opening at one end away from the rear cover. A pin is inserted through the connector, one end of the pin extends into the housing and is connected to the circuit board, and the other end of the pin extends into and is exposed in the connector groove.

[0008] By adopting the above-mentioned further design, the connector and the rear cover are integrally molded, reducing the number of independent parts, optimizing material costs, and reducing assembly steps for better consistency. Only one connection is needed between the pin and the circuit board, and then the rear cover is fixed to the housing. There is no need to install and seal external connectors separately. The integral molding design eliminates the gap problem at the connector on the rear cover in the traditional split design, effectively preventing the entry of contaminants such as moisture and dust, improving the dustproof and waterproof rating of the alarm. In addition, the connector slot can be used as a socket, and only one wire harness is needed to connect the circuit board and the plug on the car, reducing the number of wire harnesses in the whole vehicle.

[0009] A further feature of this invention is that the mounting boss includes an inclined surface on the side, and the inclined plate is in contact with the inclined surface.

[0010] With the above-mentioned further design, the inclined plate and the inclined surface are fitted together, which increases the contact area between the vibration damping part and the mounting boss, thereby enabling the vibration transmitted from the shell to be transmitted to the vibration damping part more quickly and improving the vibration damping effect.

[0011] A further feature of this invention is that a sealing ring is provided between the sound-generating unit and the housing, and bolts are passed through the sound-generating unit and the sealing ring in sequence and then fixedly connected to the housing.

[0012] With the above-mentioned further configuration, when the sound-generating unit is fixed to the housing, the sealing ring is squeezed to achieve waterproofing inside the housing.

[0013] A further feature of this invention is that the housing has a stepped surface for placing a sealing ring, the sealing ring has circumferentially distributed limiting grooves, and the stepped surface has limiting protrusions that match the limiting grooves.

[0014] By adopting the above-mentioned further design, the matching design of the upper limit groove of the sealing ring and the upper limit protrusion of the housing can avoid displacement and deformation during the installation of the sealing ring.

[0015] A further improvement of this invention is that the portion of the stepped surface where the sealing ring is placed has anti-slip texture.

[0016] By adopting the above-mentioned further settings, the friction coefficient between the sealing ring and the stepped surface is increased, thus preventing the sealing ring from sliding and causing poor sealing.

[0017] A further improvement of this invention is that an O-ring is provided to seal the rear cover and the housing.

[0018] By adopting the above-mentioned further design, the connection between the back cover and the housing is sealed to improve the waterproof and dustproof performance of the rear end of the housing and protect the internal components of the housing.

[0019] A further feature of this invention is that the inclined surface is tangent to the outer surface of the shell.

[0020] By adopting the above-mentioned further settings, the connection point between the mounting boss and the housing is smoothly set, so that the stress generated by vibration can be smoothly transmitted and dispersed to the entire housing along the tangential transition area, avoiding stress concentration, improving the vibration resistance at the connection between the mounting boss and the housing, enhancing the structural reliability and durability of the alarm in a vibration environment, and the smooth transition structure is conducive to the flow of plastic or metal materials during injection molding, facilitating mold processing and demolding.

[0021] A further feature of this invention is that reinforcing ribs are provided between the extension plate and the fixing plates and inclined plates on both sides.

[0022] By adopting the above-mentioned further settings, the connection strength at the bend of the vibration damping part is enhanced, so as to avoid excessive force causing deformation and damaging the elastic structure of the vibration damping part.

[0023] A further feature of this invention is that the outer wall of the housing and the inner wall of the front cover are respectively provided with screw-in and fixed threaded structures.

[0024] With the above-mentioned further design, the housing and the front cover are detachably connected by threads, which facilitates disassembly and subsequent maintenance and replacement of the sound unit inside the housing.

[0025] A further feature of this invention is that a plurality of water guide holes are provided between the end face of the front cover and the cavity.

[0026] With the above-mentioned further design, the water guide hole structure can avoid the problem of reduced sound pressure level caused by water entering the cavity that cannot be drained. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of a specific embodiment of the present utility model; Figure 2 This is a schematic diagram of the overall structure from another perspective of a specific embodiment of the present utility model; Figure 3 This is a schematic diagram of the overall structure of the mounting plate in a specific embodiment of this utility model; Figure 4 This is a schematic diagram of the overall structure of the shell in a specific embodiment of this utility model; Figure 5 This is a schematic diagram of the circuit board and sealing ring in the housing in a specific embodiment of this utility model; Figure 6 This is a schematic diagram of the structure of the rear cover, connector, and circuit board in a specific embodiment of the present utility model; Figure 7 This is a schematic diagram of the structure of the sound-generating unit in the housing in a specific embodiment of this utility model; Figure 8 This is a schematic diagram of the overall structure of the front cover in a specific embodiment of this utility model.

[0028] In the diagram: 1. Housing; 11. Mounting boss; 111. Mounting surface; 112. Angled surface; 12. Stepped surface; 121. Limiting protrusion; 122. Anti-slip texture; 2. Sound generating unit; 3. Front cover; 31. Cavity; 4. Circuit board; 5. Mounting plate; 51. Vibration damping part; 511. Extension plate; 512. Fixing plate; 513. Angled plate; 52. Connecting part; 53. Reinforcing rib; 6. Sealing ring; 61. Limiting groove; 7. O-ring; 8. Connector; 81. Pin; 82. Connecting groove; 9. Rear cover; 10. Water guide hole. Detailed Implementation

[0029] The technical solutions in this embodiment will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0030] It should be noted that in the description of this utility model, all directional indicators (such as up, down, forward, backward, etc.) are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0031] Furthermore, in this utility model, the use of terms such as "first," "second," etc., is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. In the description of this utility model, "a number" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0032] Furthermore, the technical solutions of the various embodiments of this utility model can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0033] like Figure 1-8 The alarm device shown includes a housing 1, a sound-generating unit 2, a circuit board 4, and a mounting plate 5. The sound-generating unit 2 and the circuit board 4 are both fixedly installed inside the housing 1. The circuit board 4 has a groove with an upward circumferential opening. The housing 1 has an arc-shaped column protruding inside that can be engaged with the groove of the circuit board to fix the circuit board 4 and prevent the circuit board 4 from rotating in the circumferential direction. The circuit board 4 is electrically connected to the sound-generating unit 2. The housing 1 is a cylindrical hollow structure with a front cover 3 and a rear cover 9 at its front and rear openings, respectively.

[0034] In this embodiment, the generating unit 2 is selected as a diaphragm, or it can be a sound-generating device that can vibrate up and down; The outer side wall of the front end of the housing 1 and the inner side wall of the front cover 3 are respectively provided with screw-in and fixed threaded structures. The front cover 3 is detachably connected to the housing 1 by screwing in or out of the thread.

[0035] The front cover 3 has a recessed cavity 31. After the front cover 3 is installed on the housing 1, the cavity 31 forms the sound cavity of the sound unit 2 or the enlarged sound cavity of the sound unit 2. The volume of the sound cavity is appropriately selected to enhance the sound effect. At the same time, a number of water guide holes 10 are provided between the end face of the front cover 3 and the cavity 31. The structure of the water guide holes 10 can prevent the sound pressure level from decreasing because water cannot be discharged after entering the cavity 31.

[0036] A sealing ring 6 is provided at the connection between the sound-generating unit 2 and the housing 1. The housing 1 has a stepped surface 12 in the shape of a ring, and annular anti-slip texture 122 is provided on the stepped surface 12. The sealing ring 6 is placed on the stepped surface 12, and its bottom surface contacts the anti-slip texture 122. After the sound-generating unit 2 presses the sealing ring 6 onto the stepped surface 12, it is fastened to the housing 1 by bolts passing through the sound-generating unit 2 and the sealing ring 6 in sequence, thereby realizing the fixed connection between the sound-generating unit 2 and the housing 1. Furthermore, the sealing ring 6 has limit grooves 61 evenly distributed in the circumferential direction, and the stepped surface 12 has limit protrusions 121 that match the limit grooves 61, which can prevent the sealing ring 6 from being displaced and deformed during the installation process, thereby achieving a seal between the sound-generating unit 2 and the housing 1 and enhancing the waterproofness of the housing at the front connection.

[0037] An O-ring 7 is provided between the rear cover 9, which is fixedly installed at the rear opening of the housing 1, and the housing 1. The rear cover 9 is fixed to the housing 1 by screws, and the O-ring 7 is squeezed. This sealing treatment makes the rear end of the housing 1 waterproof and dustproof. Together with the design of the sealing ring 6 at the front end of the housing 1, the overall waterproof performance meets the requirements of IP67 and IP69K, protecting the internal components of the housing 1.

[0038] The rear cover 9 is integrally formed with a connector 8, which is located in the middle of the rear cover 9. The connector 8 has a connector groove 82 on the outer side of the housing 1. The connector groove 82 has an opening at one end away from the rear cover 9. A pin 81 is inserted through the connector 8 and is snapped and fixed to the rear cover 9 and the connector 8. One end of the pin 81 extends into the housing 1 and is inserted into and connected to the circuit board 4. The other end of the pin 81 extends into and is exposed in the connector groove 82. The connector groove 82 can be used as a socket. Only one wire harness is needed to connect the circuit board 4 and the plug on the car, reducing the number of wire harnesses in the whole vehicle. At the same time, the connector 8 can be provided with a snap-fit ​​structure on the outer side of the housing 1 to snap-fit ​​the end of the connecting wire harness, enhancing the connection stability.

[0039] A trapezoidal mounting boss 11 protrudes from the outer peripheral wall of the housing 1. The mounting boss 11 includes a sloping surface 112 on the side and a mounting surface 111 for fixing and connecting the mounting plate 5. The sloping surface 112 is tangential to the outer surface of the housing 1, so that the connection point between the mounting boss 11 and the housing 1 is smooth. This allows the stress generated by vibration to be smoothly transmitted and dispersed to the entire housing 1 along the tangential transition area, avoiding stress concentration and improving the vibration resistance at the connection between the mounting boss 11 and the housing 1.

[0040] It should be noted that the mounting boss 11 can be a rectangular protrusion, and the two sides of the rectangular protrusion are evenly provided with triangular reinforcing ribs. The side of the reinforcing rib is the inclined surface 122. This solution can ensure the strength of the mounting boss 11 while reducing the overall weight of the shell 1 and optimizing the injection molding cost.

[0041] The mounting plate 5 is composed of a damping part 51 and a connecting part 52, and can be made by sheet metal bending. The damping part 51 includes an extension plate 511. The two ends of the extension plate 511 are bent to the same side to form a fixing plate 512 and an inclined plate 513. In this embodiment, the connecting part 52 is a plate-shaped structure. The connecting part 52 is arranged parallel to the extension plate 511, and the fixing plate 512 is arranged perpendicular to the extension plate 511. The length and bending angle of the extension plate 511 and the fixing plate 512 can be designed according to the vehicle model. The extension plate 511 is provided with reinforcing ribs 53 between itself and the fixing plates 512 and the inclined plates 513 on both sides to strengthen the connection strength at the bending point. The reinforcing ribs 53 can be obtained by die stamping. The inclined plate 513 is integrally connected to the connecting part 52. The connecting part 52 is attached to and fixedly connected to the mounting surface 111. The connecting part 52 is provided with several through holes, and the mounting surface 111 is reserved with a corresponding number of nail slots. Screws are screwed into the nail slots on the mounting boss 11 through the through holes on the connecting part 52 to complete the fixing of the mounting plate 5 and the housing 1. The fixing plate 512 can be reserved with through holes for installation connection with the vehicle.

[0042] It should be noted that the inclined plate 511 and the inclined surface 112 can be attached or not. When the inclined plate 511 and the inclined surface 112 are attached, the contact area between the vibration damping part 51 and the mounting boss 11 is increased, so that the vibration transmitted from the shell can be transmitted to the vibration damping part more quickly, thereby improving the vibration damping effect. In this embodiment, the inclined plate 511 and the inclined surface 112 are attached.

[0043] This embodiment effectively buffers and absorbs the vibration of the entire vehicle through the unique structure of the mounting plate 5. The mounting plate 5 is connected to the mounting boss 11 at multiple points through the connecting part 52 and the inclined plate 513. This not only facilitates positioning and fixing during installation, but also transmits the vibration of the entire vehicle to the vibration damping part 51. After the inclined plate 513 receives the transmitted vibration, it has a certain elasticity due to the bending of the fixed plate 512 and the inclined plate 513 in the vibration damping part 51 towards the same side of the extension plate 511. This elasticity can absorb and dissipate vibration energy, effectively preventing the natural frequency of the alarm from coinciding with the vibration frequency of the entire vehicle, thereby avoiding the occurrence of resonance. It also reduces the vibration amplitude transmitted to the internal components of the housing 1, improving product reliability and service life. Furthermore, by integrating the sound cavity of the sound-emitting unit 2 into the front cover 3, the sound-emitting unit 2 can play a sound enhancement role, ensuring the effectiveness of the core alarm function.

Claims

1. A sound alarm, comprising a housing (1), a sound-generating unit (2), a circuit board (4), and a mounting plate (5), wherein the sound-generating unit (2) and the circuit board (4) are both fixedly disposed within the housing (1), and the circuit board (4) is electrically connected to the sound-generating unit (2), characterized in that, The housing (1) is a cylindrical structure with a front cover (3) at its front opening. A cavity (31) is provided on the front cover (3). The front cover (3) is installed on the housing (1), and the sound-generating unit (2) is placed inside the cavity (31). The outer peripheral wall of the housing (1) is provided with a trapezoidal mounting boss (11). The mounting boss (11) includes a mounting surface (111) that is fixedly connected to the mounting plate (5). The mounting plate (5) is composed of a vibration damping part (51) and a connecting part (52). The connecting part (52) is fixedly connected to the mounting boss (11). The vibration damping part (51) includes an extension plate (511). The two ends of the extension plate (511) are bent to the same side to form a fixing plate (512) and an inclined plate (513). The inclined plate (513) is integrally connected to the connecting part (52).

2. The alarm device with a warning sound according to claim 1, characterized in that, A rear cover (9) is fixedly installed at the rear opening of the housing (1). A connector (8) is integrally formed on the rear cover (9). The connector (8) has a connector groove (82) on the outer side of the housing (1). The connector groove (82) has an opening at one end away from the rear cover (9). A pin (81) is inserted through the connector (8). One end of the pin (81) extends into the housing (1) and is plugged into the circuit board (4) to achieve electrical connection. The other end of the pin (81) is located in the connector groove (82).

3. The audible alarm device according to claim 1 or 2, characterized in that, The mounting boss (11) includes a slope (112) on the side, and the slope plate (513) is in contact with the slope (112).

4. The audible alarm device according to claim 1 or 2, characterized in that, A sealing ring (6) is provided between the sound-generating unit (2) and the housing (1) for sealing. The bolt passes through the sound-generating unit (2) and the sealing ring (6) in sequence and is then fixedly connected to the housing (1).

5. The audible alarm device according to claim 4, characterized in that, The housing (1) is provided with a stepped surface (12) for placing a sealing ring (6). The sealing ring (6) has locating grooves (61) evenly distributed in the circumferential direction. The stepped surface (12) has a locating protrusion (121) that matches the locating groove (61).

6. The audible alarm device according to claim 5, characterized in that, The portion of the stepped surface (12) on which the sealing ring (6) is placed is provided with anti-slip texture (122).

7. The audible alarm device according to claim 2, characterized in that, An O-ring (7) is provided between the rear cover (9) and the housing (1) for sealing.

8. The audible alarm device according to claim 3, characterized in that, The inclined surface (112) is tangential to the outer surface of the shell (1).

9. The audible alarm device according to claim 1 or 8, characterized in that, The extension plate (511) is provided with reinforcing ribs (53) between it and the fixed plate (512) and the inclined plate (513) on both sides.

10. The alarm device with a warning sound according to claim 1, characterized in that, The front cover (3) end face is connected to the cavity (31) and a number of water guide holes (10) are provided.

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