Pedestrian warning device for vehicle

Abstract

The invention provides a pedestrian warning device for a vehicle, and belongs to the technical field of vehicle parts, the pedestrian warning device comprises a shell assembly, the shell assembly comprises an upper shell and a lower shell, the surface of the upper shell is provided with a plurality of openings, and the lower shell is internally provided with a containing cavity; the edge of the upper shell protrudes towards the periphery to form an upper flange part, the edge of the lower shell protrudes towards the periphery to form a lower flange part, and the upper flange part and the lower flange part are in butt joint and are fixedly connected through a plurality of first screws; the loudspeaker is fixedly installed in the upper shell and divides the space in the upper shell into a first cavity and a second cavity, the first cavity and the second cavity are isolated, the opening is communicated with the first cavity, and the second cavity is communicated with the containing cavity. The device has the advantages that the upper shell and the lower shell are combined, sealing connection is conducted through the flange part, the whole device is more compact, good waterproof and dustproof performance is provided, internal electronic elements are protected against the influence of the external environment, and the service life is prolonged.

Description

Technical Field

[0001] The invention belongs to the technical field of vehicle parts and components, and relates to a vehicle-used pedestrian warning device. Background Art

[0002] Many electric vehicles (EVs) and plug-in hybrid electric vehicles (PHEVs) are equipped with pedestrian warning systems, also known as vehicle approaching sound for pedestrians (VASP). This is because electric vehicles are very quiet at low speeds, especially when driving slowly or reversing in urban environments, which may pose a potential safety hazard to pedestrians, especially those with visual impairments.

[0003] The existing vehicle pedestrian warning device is relatively complex in structure, and there is still room for improvement in its waterproof and dustproof performance. Summary of the invention

[0004] The purpose of the present invention is to address the above-mentioned problems in the prior art and to provide a vehicle-based pedestrian warning device.

[0005] The purpose of the present invention can be achieved through the following technical solutions: A pedestrian warning device for a vehicle, comprising:

[0006] A shell assembly, the shell assembly comprising an upper shell and a lower shell, the surface of the upper shell is provided with a plurality of openings, and the interior of the lower shell has a receiving cavity; the edge of the upper shell protrudes toward the periphery to form an upper flange portion, and the edge of the lower shell protrudes toward the periphery to form a lower flange portion, the upper flange portion is butted against the lower flange portion and the two are fixedly connected by a plurality of first screws;

[0007] A speaker is fixedly installed in the upper shell, and the speaker divides the space in the upper shell into a first cavity and a second cavity, the first cavity and the second cavity are isolated, the opening is connected to the first cavity, and the second cavity is connected to the accommodating cavity.

[0008] Preferably, the lower surface of the upper flange portion is in close contact with the upper surface of the lower flange portion, one of the upper flange portion and the lower flange portion is provided with an annular sealing groove and the other is provided with an annular protrusion, and the annular protrusion is embedded in the annular sealing groove.

[0009] Preferably, an annular sealing ring is arranged in the annular sealing groove, and the annular protrusion presses the annular sealing ring so that the annular sealing ring seals the gap between the annular protrusion and the annular sealing groove.

[0010] Preferably, a balancing hole for balancing the internal and external air pressure difference is opened in the shell wall of the lower shell, the balancing hole is communicated with the accommodating cavity, and a breathable waterproof film is pasted on the shell wall of the lower shell, and the breathable waterproof film covers the balancing hole.

[0011] Preferably, it also includes a flange bracket, the speaker is installed on the flange bracket, the flange bracket is fixedly connected to the top surface of the upper shell by a second screw to fix the speaker in the upper shell, the flange bracket cooperates with the top surface of the speaker to isolate the first cavity and the second cavity, the top surface of the speaker faces the opening, and the first cavity is formed between the top surface of the speaker and the top of the upper shell.

[0012] Preferably, the accommodating cavity is configured as a redundant structure.

[0013] Preferably, a circuit board is disposed in the accommodating cavity, the speaker is electrically connected to the circuit board, a socket is disposed on the outer wall of the lower shell, and pins on the circuit board are inserted into the socket.

[0014] Preferably, it further comprises a connecting bracket, one end of which is fixedly connected to the lower shell.

[0015] Preferably, the bottom surface of the lower shell is provided with two symmetrical slot seats, and the connecting bracket includes a first connecting part, which is inserted between the two slot seats and tightly attached to the bottom surface of the lower shell, and the first connecting part is fixedly connected to the bottom surface of the lower shell by a third screw.

[0016] Preferably, the connecting bracket further includes a second connecting portion, the second connecting portion is in close contact with the side surface of the lower shell, and the second connecting portion is fixedly connected to the side surface of the lower shell by a fourth screw.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. The upper and lower shells are combined and sealed through the flange, making the entire device more compact and providing good waterproof and dustproof performance, protecting the internal electronic components from the external environment and extending the service life.

[0019] 2. When the upper flange and the lower flange are butted, the annular protrusion is just embedded in the annular sealing groove. This design can form a labyrinth-like sealing path, increasing the difficulty of water vapor and dust entering the shell.

[0020] 3. The annular sealing ring is an annular component made of elastic material (such as rubber or silicone) and is placed in the annular sealing groove. Since the sealing ring is made of elastic material, even if there are slight unevenness or manufacturing tolerances between the annular protrusion and the annular sealing groove, the sealing ring can compensate for these differences by deformation, thereby ensuring the integrity of the seal.

[0021] 4. By balancing the internal and external air pressure, the shell can be prevented from deformation or rupture due to the pressure difference. The breathable waterproof membrane can effectively prevent moisture and dust from entering the shell, thereby protecting the internal electronic components from moisture and pollution and extending the service life of the equipment.

[0022] 5. Adding a connecting bracket to the vehicle pedestrian warning device can further enhance the installation stability and structural integrity of the device. One end of the connecting bracket is fixedly connected to the lower shell, and the other end can be connected to the structure of the vehicle, such as the body or frame. The shell assembly is fixedly connected to the vehicle through the connecting bracket. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural exploded view of the pedestrian warning device for a vehicle of the present invention.

[0024] Figure 2 It is a top view of the vehicle pedestrian warning device of the present invention.

[0025] Figure 3 for Figure 2 Schematic diagram of the cross section of AA.

[0026] Figure 4 for Figure 2 Schematic diagram of the cross section of BB.

[0027] Figure 5 It is a schematic structural diagram of the vehicle pedestrian warning device of the present invention.

[0028] Figure 6 The figure is a schematic diagram of the connection relationship between the loudspeaker and the flange bracket of the present invention.

[0029] In the figure, 100, upper shell; 110, opening; 120, upper flange; 121, annular protrusion; 130, first cavity; 140, second cavity; 200, lower shell; 210, accommodating cavity; 220, lower flange; 221, annular sealing groove; 222, annular sealing ring; 230, first screw; 240, breathable waterproof membrane; 250, socket; 260, slot seat; 300, speaker; 400, flange bracket; 410, second screw; 500, circuit board; 600, connecting bracket; 610, first connecting part; 611, third screw; 620, second connecting part; 621, fourth screw. DETAILED DESCRIPTION

[0030] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0031] like Figures 1 to 6 As shown, a pedestrian warning device for a vehicle includes: a shell assembly, the shell assembly includes an upper shell 100 and a lower shell 200, the surface of the upper shell 100 is provided with a plurality of openings 110, and the interior of the lower shell 200 has a accommodating cavity 210; the edge of the upper shell 100 protrudes toward the periphery to form an upper flange portion 120, and the edge of the lower shell 200 protrudes toward the periphery to form a lower flange portion 220, the upper flange portion 120 and the lower flange portion 220 are butted against each other and the two are fixedly connected by a plurality of first screws 230; a speaker 300, the speaker 300 is fixedly installed in the upper shell 100, the speaker 300 divides the space in the upper shell 100 into a first cavity 130 and a second cavity 140, the first cavity 130 and the second cavity 140 are isolated, the opening 110 is communicated with the first cavity 130, and the second cavity 140 is communicated with the accommodating cavity 210.

[0032] The housing assembly is composed of an upper housing 100 and a lower housing 200. The upper housing 100 is provided with a plurality of openings 110 on its surface, which are used to allow sound to be transmitted. The edge of the upper housing 100 extends toward the periphery to form an upper flange 120. The lower housing 200 has an accommodating cavity 210 inside, which is designed as a redundancy or used to install other components. The edge of the lower housing 200 also extends toward the periphery to form a lower flange 220. The upper flange 120 is butted against the lower flange 220 and fixedly connected by a plurality of first screws 230, which ensures the sealing of the housing and facilitates assembly and disassembly.

[0033] When the speaker 300 is fixedly installed in the upper shell 100, the space in the upper shell 100 is naturally divided into a first cavity 130 and a second cavity 140. The first cavity 130 is connected to the opening 110 on the surface of the upper shell 100, allowing sound to be transmitted directly from here to the outside. The second cavity 140 can also be used to accommodate some electrical components and optimize the internal space layout of the shell assembly. The second cavity 140 is connected to the accommodating cavity 210 of the lower shell 200. The circuit of the speaker 300 can enter the accommodating cavity 210, which is convenient for subsequent connection with the circuit board 500, and the first cavity 130 is isolated from the second cavity 140, which means that debris or dust cannot enter the second cavity 140 and the accommodating cavity 210 from the first cavity 130, providing good waterproof and dustproof performance, protecting internal electronic components from the external environment, and extending the service life.

[0034] The vehicle pedestrian warning device is installed on the vehicle. When the vehicle is in a low-speed state or reversing, etc. and pedestrians need to be reminded, the vehicle control system will trigger the warning device, and the speaker 300 will start to make a sound after receiving the electrical signal. The sound generated is mainly transmitted through the opening 110 on the upper shell 100, thereby effectively sending an alarm to the surrounding environment.

[0035] like Figures 1 to 4 As shown, on the basis of the above embodiment, the lower surface of the upper flange portion 120 is tightly attached to the upper surface of the lower flange portion 220, one of the upper flange portion 120 and the lower flange portion 220 is provided with an annular sealing groove 221 and the other is provided with an annular protrusion 121, and the annular protrusion 121 is embedded in the annular sealing groove 221.

[0036] The annular sealing groove 221 is a concave annular groove, and the annular protrusion 121 is a protrusion structure that matches the annular sealing groove 221. When the upper flange portion 120 and the lower flange portion 220 are connected, the annular protrusion 121 is just embedded in the annular sealing groove 221. This design can form a labyrinth-like sealing path, which increases the difficulty of water vapor and dust entering the interior of the shell. The close fit between the annular protrusion 121 and the annular sealing groove 221 can effectively prevent external moisture and dust from entering the interior of the shell, protecting the internal electronic components from damage. Compared with simple planar contact, this structure can provide a better sealing effect, especially in the face of vibration or temperature changes. It can also maintain good sealing performance.

[0037] On the basis of the above embodiment, an annular sealing ring 222 is disposed in the annular sealing groove 221 , and the annular protrusion 121 squeezes the annular sealing ring 222 so that the annular sealing ring 222 seals the gap between the annular protrusion 121 and the annular sealing groove 221 .

[0038] The annular sealing ring 222 is an annular component made of elastic material (such as rubber or silicone), and is placed in the annular sealing groove 221. Since the sealing ring is made of elastic material, even if there are slight unevenness or manufacturing tolerances between the annular protrusion 121 and the annular sealing groove 221, the sealing ring can compensate for these differences by deformation, thereby ensuring the integrity of the seal.

[0039] During installation, first, the annular sealing ring 222 is placed in the annular sealing groove 221, and then the annular protrusion 121 is butted against the annular sealing groove 221. When the upper flange 120 and the lower flange 220 are fixed together by the first screw 230, the annular protrusion 121 will squeeze the annular sealing ring 222. The sealing ring will deform under pressure, filling the small gap between the annular protrusion 121 and the annular sealing groove 221 to form a continuous sealing surface.

[0040] This sealing design is particularly suitable for equipment that needs to work in harsh environments, such as vehicle parts and electronic equipment used outdoors. For vehicle pedestrian warning devices, this design can ensure that the device can still work normally under conditions such as rain, snow or sandstorms, and will not fail due to water ingress or dust accumulation.

[0041] like Figure 1 , Figure 5 As shown, on the basis of the above embodiment, a balancing hole for balancing the internal and external air pressure difference is opened in the shell wall of the lower shell 200, and the balancing hole is connected to the accommodating cavity 210. A breathable waterproof membrane 240 is pasted on the shell wall of the lower shell 200, and the breathable waterproof membrane 240 covers the balancing hole.

[0042] The design of setting a balancing hole on the shell wall of the lower shell 200 and covering it with a breathable waterproof membrane 240 is mainly to balance the air pressure difference inside and outside the shell while maintaining the waterproof and dustproof performance of the shell. The breathable waterproof membrane 240 is a special film, usually made of porous materials such as PTFE (polytetrafluoroethylene) or ePTFE (expanded polytetrafluoroethylene). This film allows gas molecules to pass through, but prevents liquids and larger particles (such as dust) from passing through; when the temperature inside the shell changes (for example, due to heating of internal electronic components or changes in external ambient temperature), the air inside the shell will expand or contract, resulting in a difference between the internal air pressure and the external air pressure. The presence of the balancing hole allows air to enter and exit to eliminate this air pressure difference and prevent the shell from being deformed or damaged due to excessively high or low internal pressure.

[0043] By balancing the internal and external air pressure, the shell can be prevented from being deformed or ruptured due to the pressure difference. The breathable waterproof membrane 240 can effectively prevent moisture and dust from entering the shell, thereby protecting the internal electronic components from moisture and pollution and extending the service life of the equipment.

[0044] like Figures 1 to 6 As shown, on the basis of the above embodiment, it also includes a flange bracket 400, the speaker 300 is installed on the flange bracket 400, the flange bracket 400 is fixedly connected to the top surface of the upper shell 100 by a second screw 410 to fix the speaker 300 in the upper shell 100, the flange bracket 400 cooperates with the top surface of the speaker 300 to isolate the first cavity 130 and the second cavity 140, the top surface of the speaker 300 faces the opening 110, and the first cavity 130 is formed between the top surface of the speaker 300 and the top of the upper shell 100.

[0045] The main function of the flange bracket 400 is to serve as an installation platform for the speaker 300. It is fixed to the top of the upper shell 100 by the second screw 410, so as to ensure that the speaker 300 is firmly installed in the predetermined position and will not loosen or move due to the vibration of the vehicle; the flange bracket 400 and the top surface of the speaker 300 together divide the space inside the upper shell 100 into a first cavity 130 and a second cavity 140. The flange bracket 400 not only provides an installation point, but also can realize the separation of the internal space of the upper shell 100.

[0046] Embodiment 1:

[0047] In the first embodiment, the accommodating cavity 210 is configured as a redundant structure. The redundant structure allows the manufacturer to easily upgrade the product in the future, such as adding new sensors, processors or other electronic components, without having to redesign the entire housing. The flexibility, reliability and maintainability of the vehicle pedestrian warning device are greatly improved, so that it can adapt to changing technical requirements and environmental conditions.

[0048] Embodiment 2:

[0049] like Figures 1 to 4 As shown, in the second embodiment, a circuit board 500 is arranged in the accommodating cavity 210, the speaker 300 is electrically connected to the circuit board 500, a socket 250 is arranged on the outer wall of the lower housing 200, and the pins on the circuit board 500 are inserted into the socket 250. The circuit board 500 (PCB) is installed in the accommodating cavity 210 of the lower housing 200, and the circuit required to control the speaker 300 and other electronic components is integrated thereon.

[0050] When the vehicle control system issues a command, the signal is transmitted to the pins on the circuit board 500 through the socket 250, and then the circuit board 500 processes the signal and transmits it to the speaker 300 through the connecting wire, so that the speaker 300 makes a sound. By directly passing the pins on the circuit board 500 through the socket 250, an efficient and reliable electrical connection can be achieved, the number of intermediate connectors is reduced, the risk of poor contact is reduced, and this design simplifies the assembly process because no additional connectors or adapters are required, reducing assembly time and cost.

[0051] like Figures 1 to 5 As shown, based on the above embodiment, a connecting bracket 600 is further included, and one end of the connecting bracket 600 is fixedly connected to the lower shell 200 .

[0052] Adding a connecting bracket 600 to the vehicle pedestrian warning device can further enhance the installation stability and structural integrity of the device. One end of the connecting bracket 600 is fixedly connected to the lower housing 200, and the other end can be connected to the structure of the vehicle, such as the vehicle body or frame. The housing assembly is fixedly connected to the vehicle through the connecting bracket 600.

[0053] Based on the above embodiment, two symmetrical slot seats 260 are provided on the bottom surface of the lower shell 200, and the connecting bracket 600 includes a first connecting portion 610, which is inserted between the two slot seats 260 and is close to the bottom surface of the lower shell 200, and the first connecting portion 610 is fixedly connected to the bottom surface of the lower shell 200 by a third screw 611.

[0054] The design of the slot seat 260 ensures that the connection bracket 600 can be accurately positioned, reducing installation errors. The connection bracket 600 is fixed to the bottom surface of the lower shell 200 by the third screw 611, which can provide additional support and enhance the overall stability of the device. In addition, the matching design of the slot seat 260 and the connection bracket 600 simplifies the assembly process. If the connection bracket 600 needs to be replaced or maintained, it is only necessary to remove the third screw 611. The operation is simple and quick. The connection bracket 600 is tightly combined with the bottom surface of the lower shell 200, which improves the structural rigidity of the entire device and enhances the anti-seismic performance.

[0055] On the basis of the above embodiment, the connecting bracket 600 further includes a second connecting portion 620 , which is in close contact with the side surface of the lower shell 200 , and the second connecting portion 620 is fixedly connected to the side surface of the lower shell 200 by a fourth screw 621 .

[0056] The connecting bracket 600 is not only fixedly connected to the bottom surface of the lower housing 200 through the first connecting portion 610, but also fixedly connected to the side surface of the lower housing 200 through the second connecting portion 620. This design further enhances the connection strength and stability between the connecting bracket 600 and the lower housing 200. By double fixing on the bottom surface and the side surface, the connection between the connecting bracket 600 and the lower housing 200 is more stable and can better resist various vibrations and impacts.

[0057] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0058] In addition, in the present invention, the descriptions such as "first", "second", "one", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features.

[0059] In the present invention, unless otherwise clearly stipulated and limited, the terms "connected", "fixed", etc. should be understood in a broad sense. For example, "fixed" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly limited.

[0060] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

Claims

1. A pedestrian warning device for a vehicle, characterized in that: include: A shell assembly, the shell assembly comprising an upper shell (100) and a lower shell (200), the surface of the upper shell (100) being provided with a plurality of openings (110), the interior of the lower shell (200) being provided with a receiving cavity (210); the edge of the upper shell (100) protruding toward the periphery to form an upper flange portion (120), the edge of the lower shell (200) protruding toward the periphery to form a lower flange portion (220), the upper flange portion (120) being butted against the lower flange portion (220), and the two being fixedly connected by a plurality of first screws (230); A speaker (300), wherein the speaker (300) is fixedly installed in the upper shell (100), and the speaker (300) divides the space in the upper shell (100) into a first cavity (130) and a second cavity (140), wherein the first cavity (130) and the second cavity (140) are isolated, and the opening (110) is connected to the first cavity (130), and the second cavity (140) is connected to the accommodating cavity (210).

2. A pedestrian warning device for a vehicle as claimed in claim 1, characterized in that: The lower surface of the upper flange part (120) is tightly attached to the upper surface of the lower flange part (220); one of the upper flange part (120) and the lower flange part (220) is provided with an annular sealing groove (221) and the other is provided with an annular protrusion (121); the annular protrusion (121) is embedded in the annular sealing groove (221).

3. A pedestrian warning device for a vehicle as claimed in claim 2, characterized in that: An annular sealing ring (222) is arranged in the annular sealing groove (221), and the annular protrusion (121) squeezes the annular sealing ring (222) so that the annular sealing ring (222) seals the gap between the annular protrusion (121) and the annular sealing groove (221).

4. A pedestrian warning device for a vehicle as claimed in claim 3, characterized in that: The shell wall of the lower shell (200) is provided with a balancing hole for balancing the internal and external air pressure difference, the balancing hole is communicated with the accommodating cavity (210), and the shell wall of the lower shell (200) is adhered with a breathable waterproof film (240), and the breathable waterproof film (240) covers the balancing hole.

5. A pedestrian warning device for a vehicle according to any one of claims 1 to 4, characterized in that: It also includes a flange bracket (400), the speaker (300) is installed on the flange bracket (400), the flange bracket (400) is fixedly connected to the top surface of the upper shell (100) by a second screw (410) to fix the speaker (300) in the upper shell (100), the flange bracket (400) cooperates with the top surface of the speaker (300) to isolate the first cavity (130) and the second cavity (140), the top surface of the speaker (300) faces the opening (110), and the first cavity (130) is formed between the top surface of the speaker (300) and the top of the upper shell (100).

6. The vehicle pedestrian warning device according to claim 1, characterized in that: The accommodating cavity (210) is configured as a redundant structure.

7. The vehicle pedestrian warning device according to claim 1, characterized in that: A circuit board (500) is arranged in the accommodating cavity (210), the speaker (300) is electrically connected to the circuit board (500), a connector (250) is arranged on the outer wall of the lower shell (200), and pins on the circuit board (500) are inserted into the connector (250).

8. The vehicle pedestrian warning device according to claim 1, characterized in that: It also includes a connecting bracket (600), one end of which is fixedly connected to the lower shell (200).

9. A pedestrian warning device for a vehicle as claimed in claim 8, characterized in that: The bottom surface of the lower shell (200) is provided with two symmetrical slot seats (260), and the connecting bracket (600) includes a first connecting portion (610), the first connecting portion (610) is inserted between the two slot seats (260) and is tightly attached to the bottom surface of the lower shell (200), and the first connecting portion (610) is fixedly connected to the bottom surface of the lower shell (200) by a third screw (611).

10. A pedestrian warning device for a vehicle as claimed in claim 9, characterized in that: The connecting bracket (600) further comprises a second connecting portion (620), the second connecting portion (620) being closely attached to the side surface of the lower shell (200), and the second connecting portion (620) being fixedly connected to the side surface of the lower shell (200) by a fourth screw (621).

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