Pedestrian warning loudspeaker for electric car

Abstract

The pedestrian warning loudspeaker comprises a shell and a loudspeaker, the shell comprises a cylindrical shell with an opening at one end, a round cover plate arranged at the opening of the cylindrical shell, and a connecting sleeve used for connecting the cylindrical shell and the round cover plate; an annular groove is formed in the round cover plate, a convex ring is arranged at one end of the connecting sleeve and slidably connected into the annular groove, internal threads are arranged at the other end of the connecting sleeve, external threads are arranged on the barrel shell, and the connecting sleeve is in threaded connection with the outside of the barrel shell; the pedestrian warning loudspeaker for the electric car is simple and reasonable in structure, the round cover plate and the barrel shell are connected through the connecting sleeve without screws, and operation is simpler and more convenient.

Description

Technical Field

[0001] This utility model relates to a pedestrian warning loudspeaker for trams. Background Technology

[0002] Pedestrian warning speakers are typically installed on electric vehicles. When electric vehicles are traveling at low speeds in pure electric mode, the average external noise is significantly reduced compared to traditional internal combustion engine vehicles. This makes it difficult for other road users, including pedestrians and cyclists, especially blind and visually impaired people, to notice the approaching vehicle, which can easily lead to traffic accidents. When the vehicle is traveling at low speeds, the pedestrian warning speakers can emit pedestrian warning sounds to ensure traffic safety.

[0003] However, existing modular warning speakers usually require screws to fasten the base and cover plate together. However, screws are prone to rusting over time, affecting the appearance and making subsequent disassembly inconvenient. Summary of the Invention

[0004] The purpose of this utility model is to provide a pedestrian warning loudspeaker for trams, including a housing and a loudspeaker. The housing includes a cylindrical shell with one end open, a circular cover plate disposed at the opening of the cylindrical shell, and a connecting sleeve for connecting the cylindrical shell and the circular cover plate. A coaxial annular groove is formed on the outer peripheral side of the circular cover plate. One end of the connecting sleeve is provided with an inwardly extending protruding ring, which is slidably connected in the annular groove. An internal thread is formed on the inner side of the other end of the connecting sleeve. An external thread is formed on the outer peripheral side of the cylindrical shell. The connecting sleeve is threadedly connected to the outside of the cylindrical shell.

[0005] Preferably, a sealing rubber ring is provided between the cylindrical shell and the round cover plate, and an annular groove is provided on the opposite surfaces of the cylindrical shell and the round cover plate. The sealing rubber ring has matching sealing protrusions on both sides, and the sealing protrusions are embedded in the corresponding annular grooves.

[0006] Preferably, a plurality of anti-slip strips are axially and evenly spaced on the outer circumferential surface of the connecting sleeve.

[0007] Preferably, the cylindrical shell is provided with a locking device, which includes a locking seat and a locking pin. The locking pin is axially movable in the locking seat and is inserted into the gap between two adjacent anti-slip strips.

[0008] Preferably, the speaker is mounted inside the housing by a bracket.

[0009] The advantages and beneficial effects of this utility model are as follows:

[0010] 1 This utility model provides a pedestrian warning speaker for trams, which has a simple and reasonable structure. The connection between the round cover plate and the cylindrical shell is achieved by a connecting sleeve without the need for screws, making the operation simpler and more convenient.

[0011] 2 This utility model provides a pedestrian warning speaker for trams. By setting a sealing rubber ring between the round cover plate and the cylindrical shell, and the sealing protrusions on both sides of the sealing rubber ring are respectively embedded on the round cover plate and the cylindrical shell, the connection and sealing performance between the round cover plate and the cylindrical shell is improved.

[0012] 3 This utility model provides a pedestrian warning speaker for trams. The locking pin of the locking sleeve device is inserted into the gap between two adjacent anti-slip strips, thus restricting the free rotation of the connecting sleeve on the cylindrical shell, so that the round cover plate is locked on the cylindrical shell, ensuring the connection stability between the round cover plate and the cylindrical shell. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the present invention.

[0014] Figure 2 This is a split diagram of the present invention. Detailed Implementation

[0015] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings and examples. The following examples are only used to more clearly illustrate the technical solution of this utility model and should not be construed as limiting the scope of protection of this utility model.

[0016] The specific technical solution of this utility model is as follows:

[0017] like Figure 1 and Figure 2 As shown, a pedestrian warning loudspeaker for trams includes a housing 1 and a loudspeaker 2. The housing 1 includes a cylindrical shell 3 with one end open, a circular cover plate 4 disposed at the opening of the cylindrical shell 3, and a connecting sleeve 5 for connecting the cylindrical shell 3 and the circular cover plate 4. A coaxial annular groove 6 is formed on the outer peripheral side of the circular cover plate 4. One end of the connecting sleeve 5 is provided with an inwardly extending protruding ring 7, which is slidably connected in the annular groove 6. An internal thread 8 is formed on the inner side of the other end of the connecting sleeve 5. An external thread 9 is formed on the outer peripheral side of the cylindrical shell 3. The connecting sleeve 5 is threadedly connected to the outside of the cylindrical shell 3.

[0018] A sealing rubber ring 10 is provided between the cylindrical shell 3 and the round cover plate 4. An annular groove 11 is provided on the opposite surfaces of the cylindrical shell 3 and the round cover plate 4. A matching sealing protrusion 12 is provided on both sides of the sealing rubber ring 10. The sealing protrusion 12 is embedded in the corresponding annular groove 11. Specifically, the sealing protrusion 12 on both sides of the sealing rubber ring 10 is embedded in the annular groove 11 of the round cover plate 4 and the cylindrical shell 3, which helps to improve the connection and sealing performance between the round cover plate 4 and the cylindrical shell 3.

[0019] The outer circumferential surface of the connecting sleeve 5 is provided with a plurality of anti-slip strips 13 at uniform intervals along the axis; specifically, the anti-slip strips 13 increase the contact area and friction coefficient of the connecting sleeve 5, thereby making it easier to rotate the connecting sleeve 5.

[0020] The aforementioned cylindrical shell 3 is provided with a locking device 14, which includes a locking seat 15 and a locking pin 16. The locking pin 16 is axially movable within the locking seat 15 and is inserted into the gap between two adjacent anti-slip strips 13. Specifically, by inserting the locking pin 16 of the locking device 14 into the gap between two adjacent anti-slip strips 13, the free rotation of the connecting sleeve 5 on the cylindrical shell 3 is restricted, so that the round cover plate 4 is locked on the cylindrical shell 3, ensuring the connection stability between the round cover plate 4 and the cylindrical shell 3.

[0021] The speaker 2 is mounted inside the casing 3 via a bracket 17.

[0022] When assembling the pedestrian warning speaker, firstly, the convex ring 7 of the connecting sleeve 5 is engaged with the annular groove 6 of the round cover plate 4, so that the round cover plate 4 can be rotatably installed on the connecting sleeve 5. The sealing rubber ring 10 is placed on the round cover plate 4 inside the connecting sleeve 5. Then, the end of the connecting sleeve 5 with the internal thread is aligned with the external thread of the cylindrical shell 3. The connecting sleeve 5 is rotated in the forward direction, so that the connecting sleeve 5 is threadedly connected to the cylindrical shell 3, thereby connecting the round cover plate 4 and the cylindrical shell 3. The sealing rubber ring 10 is clamped by the round cover plate 4 and the cylindrical shell 3, completing the assembly of the pedestrian warning speaker. Furthermore, by inserting the locking pin 16 of the locking sleeve device 14 into the gap between two adjacent anti-slip strips 13, the free rotation of the connecting sleeve 5 on the cylindrical shell 3 is restricted, so that the round cover plate 4 is locked on the cylindrical shell 3, ensuring the stability of the connection between the round cover plate 4 and the cylindrical shell 3.

[0023] When it is necessary to remove the round cover plate 4 from the cylindrical shell 3, simply push the locking pin 16 outward to disengage it from the gap between the two adjacent anti-slip strips 13, and then rotate the connecting sleeve 5 in the opposite direction to separate the connecting sleeve 5 from the cylindrical shell 3, thus completing the disassembly of the round cover plate 4 from the cylindrical shell 3.

[0024] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A pedestrian warning loudspeaker for trams, comprising a housing and a loudspeaker, characterized in that, The housing includes a cylindrical shell with one end open, a round cover plate disposed at the opening of the cylindrical shell, and a connecting sleeve for connecting the cylindrical shell and the round cover plate. The outer peripheral side of the circular cover plate is provided with a coaxial annular groove. One end of the connecting sleeve is provided with an inwardly extending protruding ring, which is slidably connected in the annular groove. The inner side of the other end of the connecting sleeve is provided with an internal thread. The outer peripheral side of the cylindrical shell is provided with an external thread, and the connecting sleeve is threadedly connected to the outside of the cylindrical shell.

2. The pedestrian warning loudspeaker for trams according to claim 1, characterized in that, A sealing rubber ring is provided between the cylindrical shell and the round cover plate. An annular groove is provided on the opposite surfaces of the cylindrical shell and the round cover plate. A matching sealing protrusion is provided on both sides of the sealing rubber ring. The sealing protrusion is embedded in the corresponding annular groove.

3. A pedestrian warning loudspeaker for trams according to claim 2, characterized in that, The outer circumferential surface of the connecting sleeve is provided with several anti-slip strips at uniform intervals along the axis.

4. A pedestrian warning loudspeaker for trams according to claim 3, characterized in that, The cylindrical shell is provided with a locking device, which includes a locking seat and a locking pin. The locking pin is axially movable in the locking seat and is inserted into the gap between two adjacent anti-slip strips.

5. A pedestrian warning loudspeaker for trams according to claim 4, characterized in that, The speaker is mounted inside the cylindrical shell by a bracket.

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