Automobile pedestrian warning indicator

Abstract

The utility model discloses a pedestrian warning indicator for an automobile. The automobile pedestrian warning indicator comprises a shell with an open end and a loudspeaker arranged in the shell, the loudspeaker seals the open end so that an inner cavity can be formed in the shell, and a through hole communicated with the inner cavity is formed in the shell. The automobile pedestrian warning indicator further comprises a waterproof breathable film, and the waterproof breathable film is arranged on the inner surface of the shell and covers the through hole. The automobile pedestrian warning indicator further comprises a vent plug, the vent plug comprises a base, a positioning column extending into the inner cavity from the base and a plurality of fixing columns, the positioning column is inserted into the through hole, and a first vent gap allowing airflow to pass through is formed between the outer surface of the positioning column and the hole wall of the through hole. The multiple fixing columns surround the positioning column, the adjacent fixing columns are arranged at intervals to form second ventilation gaps for airflow to pass through, and the fixing columns are fixed to the outer surface of the shell. According to the automobile pedestrian warning indicator, the risk of water leakage is reduced, and the automobile pedestrian warning indicator is breathable, good in waterproofness and long in service life.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of automobile pedestrian warning device. BACKGROUND

[0002] For new energy vehicles such as battery-driven electric vehicles, pedestrian warning devices need to be configured to issue warning sounds to pedestrians and others to warn of the presence or proximity of the vehicle, especially when the vehicle is traveling at low speed. Pedestrian warning devices are usually installed on the outside of the vehicle, and their use environment is an outdoor environment, so they are inevitably often exposed to humid (e.g., rain) and dusty environments (e.g., dust, small stones, etc.). Most existing vehicle-mounted speakers are used in dry indoor environments and do not have waterproof and dustproof properties, making it impossible to meet the requirements in this special environment. Although some speakers suitable for outdoor use have a waterproof and breathable membrane that seals the airflow openings on the speaker housing, the waterproof and breathable membrane is at risk of falling off after a period of use, and water vapor can enter the speaker interior through the airflow openings, impacting the diaphragm inside the speaker, which also shortens the service life of the speaker.

[0003] The above information disclosed in the BACKGROUND section is only intended to enhance the understanding of the background of the present application, and therefore it can include information that does not constitute the prior art known to those of ordinary skill in the art. SUMMARY

[0004] The utility model provides an improved automobile pedestrian warning device that reduces the risk of water leakage, is breathable and has good waterproof properties, and has a long service life.

[0005] The utility model adopts the following technical solutions:

[0006] An automobile pedestrian warning device includes a housing with an open end and a speaker disposed within the housing. The speaker closes the open end to form an internal cavity within the housing. The housing has a through hole that is in communication with the internal cavity. The automobile pedestrian warning device further includes a waterproof and breathable membrane that allows air to pass through while preventing water from passing through. The waterproof and breathable membrane is disposed on the inner surface of the housing and covers the through hole.

[0007] The automobile pedestrian warning device further includes a breathable plug. The breathable plug includes a base, a positioning column extending from the base into the internal cavity, and a plurality of fixing columns. The positioning column is inserted into the through hole, and a first breathable gap for airflow is formed between the outer surface of the positioning column and the hole wall of the through hole. The plurality of fixing columns surround the positioning column, and adjacent fixing columns are spaced apart to form a second breathable gap for airflow. The fixing columns are fixed to the outer surface of the housing.

[0008] In a preferred embodiment, the fixing column is provided with a fixing protrusion, and the outer surface of the shell is provided with a matching positioning groove, and the fixing protrusion is inserted into the positioning groove.

[0009] In a more preferred embodiment, the fixing column is fixed on a horizontal first outer surface of the shell, and the orthographic projection of the fixing protrusion on the first outer surface is a fan ring.

[0010] In a further preferred embodiment, in a cross section along the diameter direction of the air permeable plug, the cross section of the fixing protrusion is triangular or trapezoidal as a whole.

[0011] In a more preferred embodiment, the ratio of the height of the fixing protrusion to the height of the fixing column is 0.1-0.8. The ratio of the height of the fixing protrusion to the height of the fixing column is 0.4-0.8.

[0012] In a more preferred embodiment, the fixing protrusion is bonded or welded in the positioning groove.

[0013] In a preferred embodiment, the ratio of the height of the positioning column to the height of the fixing column is 1.5-2. More preferably, the ratio of the height of the positioning column to the height of the fixing column is 1.6-1.8.

[0014] In a more preferred embodiment, the number of the fixing columns is 3-10. Further, the number of the fixing columns is 4-8.

[0015] In a preferred embodiment, the top surface of the fixing column is bonded or welded on the outer surface of the shell.

[0016] In a preferred embodiment, the shell has a back plate opposite to the loudspeaker, the outer surface of the back plate is provided with a counterbore, the through hole is arranged in the counterbore, and the pedestal is located in the counterbore. Specifically, the air permeable plug is embedded in the shell as a whole, and the pedestal does not protrude relative to the outer surface of the back plate.

[0017] The utility model discloses the above scheme, compared with prior art has the following advantages:

[0018] The automobile pedestrian warning device of the utility model sets the waterproof air permeable membrane on the inner side of the through hole, sets the air permeable plug on the outer side of the through hole, the air permeable plug can be positioned and fixed by the wall thickness, that is, the outer surface of the waterproof air permeable membrane is not touched, and the air permeable plug can be well clamped in the air permeable through hole, waterproof air permeable is realized, and the waterproof air permeable membrane in the interior is better protected, waterproof air permeable membrane is prevented from falling off, and the service life of the automobile pedestrian warning device is prevented from being reduced due to the failure of the waterproof air permeable membrane. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the present application, the following will briefly introduce the drawings needed in the embodiment description. Obviously, the drawings described below only constitute some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from these drawings without creative labor.

[0020] Figure 1 Figure 1 is a structural diagram of an automobile pedestrian warning device according to an embodiment of the present application.

[0021] Figure 2 Figure 2 is a sectional view of the automobile pedestrian warning device along the direction of A-A in Figure 1. Figure 1

[0022] Figure 3 Figure 3 is a perspective view of a vent plug according to an embodiment of the present application.

[0023] Figure 4 Figure 4 is a plan view of the vent plug according to an embodiment of the present application.

[0024] Figure 5 Figure 5 is a sectional view of the vent plug along the direction of B-B in Figure 4. Figure 4

[0025] In the above drawings,

[0026] 1, automobile pedestrian warning device;

[0027] 100, housing; 101, rear plate; 102, first outer surface; 103, positioning groove; 110, through hole; 120, counterbore;

[0028] 200, waterproof and breathable film;

[0029] 300, vent plug; 301, base; 310, positioning column; 320, fixing column; 321, fixing ridge; 330, first vent gap; 340, second vent gap. DETAILED DESCRIPTION

[0030] The preferred embodiments of the present application will be described below in detail with reference to the drawings, so that the advantages and features of the present application can be more easily understood by those skilled in the art. It should be noted that the description of these embodiments is used to help understand the present application, but does not constitute a limitation on the present application. In addition, the technical features involved in each embodiment of the present application described below can be combined with each other as long as they do not conflict with each other.

[0031] Figures 1 to 5 The drawings are drawn in true proportion, and in order to maintain the brevity of the specification, the proportions and positions of the elements are not listed one by one, but the proportions and positions of the elements should be considered as part of the content of the specification.​​

[0032] In this document, "inner" and "outer" are defined with reference to the loudspeaker, with the orientation closer to the loudspeaker being inner, and vice versa. The orientation words "upper", "lower", and "horizontal" are intended to facilitate understanding of the structure of the automobile pedestrian warning device by those skilled in the art, and are not used to define the state of the automobile pedestrian warning device after it is installed into a use scenario. For example, the automobile pedestrian warning device can be installed on a horizontal surface, an inclined surface, or a vertical surface of a vehicle.

[0033] Figures 1 to 5 An automobile pedestrian warning device 1 of the present embodiment is shown, which is installed on a vehicle (specifically, a new energy vehicle driven by a battery), and functions to play a pedestrian warning sound to pedestrians and the like outside the vehicle, to remind the existence or proximity of the vehicle.

[0034] Referring to Figures 1 to 5 As shown, the automobile pedestrian warning device 1 includes a housing 100 and a loudspeaker (not shown in the figure). The housing 100 has an open end, the loudspeaker is arranged in the housing 100, and the loudspeaker closes the open end to form a substantially closed inner cavity in the housing 100. Further, the automobile pedestrian warning device 1 also includes a protective cover (not shown in the figure), which is fixed on the housing 100 and covers the outer side of the loudspeaker. The protective cover has a sound transmission channel, and can also protect the diaphragm and other components of the loudspeaker, preventing water droplets from splashing onto the diaphragm or other foreign objects from impacting the diaphragm. The loudspeaker is typically a moving coil loudspeaker, which drives the voice coil through a magnetic circuit, and then drives the diaphragm to vibrate and sound, to perform electro-acoustic conversion. The loudspeaker uses a conventional loudspeaker, and its structure is not the key point of the present application, and will not be described here.

[0035] The housing 100 is provided with a through hole 110 communicating with the inner cavity. Specifically, the housing 100 has a back plate 101 and a plurality of side plates, the back plate 101 is opposite to the loudspeaker, and the through hole 110 described above can be provided on the back plate 101, and the through hole 110 penetrates the back plate 101, as shown. Figure 1 In other embodiments, the through hole 110 can also be provided on one of the side plates. The automobile pedestrian warning device 1 also includes a waterproof and breathable membrane 200 that allows air to pass through and prevents water from passing through, which is arranged on the inner surface of the housing 100 and covers the through hole 110, so that air flow can enter and exit the inner cavity through the through hole 110, and external water vapor and the like cannot enter the inner cavity from the through hole 110. The waterproof and breathable membrane 200 can use a known membrane with waterproof and breathable functions.

[0036] The automobile pedestrian warning device 1 further comprises a vent plug 300. The vent plug 300 comprises a base 301, a positioning column 310 extending into the inner cavity from the base 301, and a plurality of fixing columns 320. The positioning column 310 is inserted into the through hole 110, and a first vent gap 330 for air flow is formed between the outer surface of the positioning column 310 and the hole wall of the through hole 110. The plurality of fixing columns 320 surround the positioning column 310, and adjacent fixing columns 320 are arranged at intervals to form a second vent gap 340 for air flow. The fixing columns 320 are fixed to the outer surface of the shell 100. The first vent gap 330 and the second vent gap 340 are in communication with each other, and the air flow in the inner cavity can pass through the waterproof vent film 200, the first vent gap 330, and the second vent gap 340 to enter the external atmosphere. The cross section (as shown in Figure 4 ) of the positioning column 310 is overall cross-shaped, and the maximum outer diameter of the positioning column 310 is smaller than the hole diameter of the through hole 110. The plurality of fixing columns 320 are uniformly distributed on the periphery of the positioning column 310, and the height of the fixing columns 320 is lower than that of the positioning column 310.

[0037] Further, the fixing column 320 is provided with a fixing protruding rib 321, and the outer surface of the shell 100 is provided with a matching positioning groove 103, and the fixing protruding rib 321 is inserted into the positioning groove 103. Among them, the fixing column 320 is fixed to the horizontal first outer surface 102 of the shell 100, and the normal projection (as shown in Figure 4 ) of the fixing protruding rib 321 on the first outer surface 102 is a fan ring shape. In the specific example shown in Figure 1 , the above-mentioned first outer surface 102 is the bottom surface of the above-mentioned rear plate 101. The fixing protruding rib 321 cooperates with the positioning column 310 to play a positioning function.

[0038] In the cross section (as shown in Figure 5 ) along the diameter direction of the vent plug 300, the cross section of the fixing protruding rib 321 is overall triangular or trapezoidal. The ratio of the height of the fixing protruding rib 321 to the height of the fixing column 320 is 0.1-0.8. The ratio of the height of the fixing protruding rib 321 to the height of the fixing column 320 is 0.4-0.8. The fixing protruding rib 321 is bonded or welded in the positioning groove 103. Further, the top surface of the fixing column 320 is bonded or welded on the outer surface of the shell 100. The above-mentioned "bonding" refers to connecting after coating glue and curing; the above-mentioned "welding" refers to ultrasonic welding. In a specific example, the vent plug 300 is a plastic part integrally injection molded, and the shell 100 is also a plastic part, and the two are ultrasonic hot melt welded.

[0039] The ratio of the height of the positioning column 310 to the height of the fixing column 320 is 1.5-2. Preferably, the ratio of the height of the positioning column 310 to the height of the fixing column 320 is 1.6-1.8. In the example shown in the drawings, the ratio of the height of the positioning column 310 to the height of the fixing column 320 is 1.72.

[0040] The number of the fixing columns 320 is 3-10. Further, the number of the fixing columns 320 is 4-8. In the example shown in the drawings, the number of the fixing columns 320 is 6. In other embodiments, the number of the fixing columns 320 can be 4 or 8.

[0041] Further, the outer surface of the rear plate 101 of the shell 100 is provided with a counterbore 120, the through hole 110 is formed in the counterbore 120, and the base 301 is located in the counterbore 120. Specifically, the air permeable plug 300 is embedded in the shell 100 as a whole, and the base 301 does not protrude relative to the outer surface of the rear plate 101.

[0042] In view of the problem of water leakage and air leakage risk caused by the loosening of the waterproof air permeable film due to long-term external water impact or inflow in the existing pedestrian warning device with waterproof air permeable film, the automobile pedestrian warning device 1 of the present embodiment sets the waterproof air permeable film 200 on the inner side of the through hole 110, and sets the air permeable plug 300 on the outer side of the through hole 110. The air permeable plug 300 can be limited and fixed by the wall thickness, that is, it does not touch the outer surface of the waterproof air permeable film 200, and can be well clamped in the air permeable through hole 110. While achieving waterproof air permeability, the internal waterproof air permeable film 200 can be better protected, preventing the waterproof air permeable film 200 from falling off and reducing the service life of the automobile pedestrian warning device 1 due to related failures of the waterproof air permeable film 200. The process is simpler, and can solve the risk of air and water leakage, air permeability and tightness.

[0043] As shown in the specification and claims, the terms "comprise" and "include" only indicate the inclusion of the steps and elements explicitly identified, and these steps and elements do not constitute an exclusive list, and the method or device can also include other steps or elements.

[0044] It can be further understood that "multiple" in the present disclosure means two or more, and other quantifiers are similar.

[0045] It can be further understood that the terms "first", "second", and the like are used to describe various information, but these information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other, and do not represent a specific order or importance. In fact, the expressions "first", "second", and the like can be used interchangeably. For example, without departing from the scope of the present disclosure, the first information can also be referred to as the second information, and similarly, the second information can also be referred to as the first information.

[0046] The above embodiment is only for illustrating the technical concept and characteristics of the present application, is a preferred embodiment, the purpose is that the person skilled in the art can understand the content of the present application and implement it, and cannot limit the protection scope of the present application.

Claims

1. A vehicle pedestrian warning device comprising a housing having an open end and a speaker disposed within the housing, the speaker closing the open end to form an internal cavity within the housing, the housing having a through hole in communication with the internal cavity, the vehicle pedestrian warning device further comprising a waterproof, air-permeable membrane that allows air to pass through and prevents water from passing through; characterized in that, The waterproof and breathable membrane is arranged on the inner surface of the shell and covers the through hole; The automobile pedestrian warning device further comprises a breathable plug, the breathable plug comprising a base, a positioning column extending from the base into the inner cavity, and a plurality of fixing columns, the positioning column being inserted into the through hole and a first breathable gap for air flow being formed between the outer surface of the positioning column and the hole wall of the through hole; the plurality of fixing columns surrounding the positioning column, adjacent fixing columns being spaced apart to form a second breathable gap for air flow, the fixing columns being fixed to the outer surface of the shell.

2. The automotive pedestrian warning device of claim 1, wherein The fixing column is provided with a fixing protrusion, and the outer surface of the shell is provided with a matching positioning groove, the fixing protrusion being inserted into the positioning groove.

3. The automotive pedestrian warning device of claim 2, wherein The fixing column is fixed to the horizontal first outer surface of the shell, and the normal projection of the fixing protrusion on the first outer surface is a fan ring shape.

4. The automotive pedestrian warning device of claim 3, wherein In a cross section along the diameter direction of the breathable plug, the cross section of the fixing protrusion as a whole is triangular or trapezoidal.

5. The automotive pedestrian warning device of claim 2, wherein, The ratio of the height of the fixing protrusion to the height of the fixing column is 0.1-0.

8.

6. The automotive pedestrian warning device of claim 2, wherein The fixing protrusion is bonded or welded in the positioning groove.

7. The automotive pedestrian warning device of claim 1, wherein The ratio of the height of the positioning column to the height of the fixing column is 1.5-2.

8. The automotive pedestrian warning device of claim 7, wherein, The number of the fixing columns is 3-10.

9. The automotive pedestrian warning device according to any one of claims 1 to 8, characterized in that, The top surface of the fixing column is bonded or welded to the outer surface of the shell.

10. The automotive pedestrian warning device according to any one of claims 1 to 8, characterized in that The shell has a back plate opposite to the loudspeaker, the outer surface of the back plate is provided with a counterbore, the through hole is arranged in the counterbore, and the base is located in the counterbore.

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