Pedestrian warning device

Abstract

The utility model relates to the technical field of vehicle engineering, in particular to a pedestrian warning device which comprises a rear shell, the rear shell comprises a bottom plate and a terminal connecting piece integrally formed on the bottom plate, the terminal connecting piece comprises a bayonet socket perpendicular to the edge of the bottom plate and a plug-in pipe connected with the side wall of the bayonet socket, and the plug-in pipe is connected with the side wall of the bayonet socket. A pin is further integrally formed in the terminal connecting piece in an injection molding mode, one end of the pin is arranged in the plugging pipe and used for being connected with an external circuit, and the other end of the pin penetrates through the plugging seat, protrudes out of the inner wall of the plugging seat and is used for being connected with a voice coil lead. A sounding assembly and a front shell are further included. According to the utility model, the contact pin is directly injected into the terminal connecting piece, so that the contact pin is directly connected with the lead of the voice diaphragm, and compared with the prior art, a circuit board is omitted, so that the contact pin can be directly connected with the lead of the voice coil, more installation steps are omitted, and the cost is further reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle engineering, in particular to a pedestrian warning device. Background Art

[0002] AVAS (Acoustic Vehicle Alerting System), also known as the acoustic vehicle warning system, is an acoustic system used in low-speed electric vehicles and hybrid vehicles. It is mainly used to emit sound to alert pedestrians and other road users that a vehicle is approaching or moving.

[0003] In the prior art, the Chinese invention patent application with publication number CN119319801A disclosed on January 17, 2025, a vehicle pedestrian warning device, including an upper shell, a lower shell, speakers arranged in the upper shell and the lower shell, and a circuit board. The voice coil lead of the speaker is first connected to the circuit board, and then passed through the pins on the circuit board to the socket of the lower shell. The signal is transmitted to the pins on the circuit board through the socket, causing the speaker to make a sound.

[0004] However, the above-mentioned pedestrian warning device not only requires the assembly of the speaker, but also requires the connection of the circuit board and pins, resulting in high manufacturing and installation costs. Utility Model Content

[0005] In view of at least one of the above technical problems, the present invention provides a pedestrian warning device that adopts structural improvement to reduce costs.

[0006] According to a first aspect of the present invention, a pedestrian warning device is provided, comprising:

[0007] A rear shell, the rear shell including a bottom plate and a terminal connector integrally formed on the bottom plate, the terminal connector including a socket perpendicular to the edge of the bottom plate and a socket tube connected to the side wall of the socket, the terminal connector also having a pin integrally injection-molded therein, one end of the pin disposed in the socket tube for connection to an external circuit, the other end of the pin passing through the socket and protruding from the inner wall of the socket;

[0008] A sound-generating assembly, comprising a magnetic circuit mechanism fixed to the rear housing and a vibration mechanism vibratingly connected to the rear housing, the vibration mechanism comprising a diaphragm and a voice coil connected to the diaphragm, the lead of the voice coil being connected to the pin;

[0009] The front shell is covered on the rear shell and connected to the bottom plate.

[0010] Furthermore, the plug pin is L-shaped, including a straight section located in the plug tube and passing through the socket, and a bent section protruding from the socket.

[0011] Furthermore, the bending section is arranged perpendicular to the bottom plate or parallel to the bottom plate.

[0012] Furthermore, the end of the bent section also has a plug-in slot for connecting to the lead of the voice coil.

[0013] Furthermore, a positioning groove is provided on the top of the socket, and the trajectory of the positioning groove corresponds to the front shell, which is used for embedding and positioning of the front shell.

[0014] Furthermore, a bracket fixing piece is integrally formed at the bottom of the base plate, and the bracket fixing piece is used for inserting and fixing the bracket.

[0015] Furthermore, the bracket fixing member includes two relatively arranged L-shaped snap-in ears, the L-shaped snap-in ears include a short arm and a long arm perpendicular to the short arm, the short arm is vertically fixed to the base plate, the long arms of the two L-shaped snap-in ears are arranged parallel to each other, and the bracket is snapped in the gap between the two L-shaped snap-in ears and the base plate.

[0016] Furthermore, the bracket fixing piece also includes a wedge-shaped top block arranged between the two L-shaped snap-on ears, the wedge-shaped top block is formed on the bottom plate, and the thickness of the wedge-shaped top block is gradually increased from close to the bracket insertion direction to away from the bracket insertion direction.

[0017] Furthermore, the rear shell also has a basin frame integrally formed on the bottom plate, the top of the basin frame has an annular step groove, the edge of the sound membrane is fixed to the annular step groove, and the edge of the sound membrane is in contact with the front shell at the same time.

[0018] Furthermore, an annular support is integrally formed on the base plate, and the annular support is located inside the basin frame. The height of the annular support is lower than the basin frame. An elastic support member is fixed to the top of the annular support. The elastic support member is annular and has a wavy cross-section. The inner side of the elastic support member is fixed to the voice coil.

[0019] The beneficial effects of the present invention are as follows: the present invention realizes direct connection between the pin and the lead of the sound membrane by directly injecting the pin into the terminal connector. Compared with the prior art, the circuit board is omitted, and the pin can be directly connected to the lead of the voice coil, thereby omitting more installation steps and reducing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0021] Figure 1 This is a schematic diagram of the exploded structure of the pedestrian warning device in an embodiment of the present utility model;

[0022] Figure 2 This is a schematic structural diagram of the rear housing in an embodiment of the present utility model;

[0023] Figure 3 This is a schematic cross-sectional view of the rear housing in an embodiment of the present utility model;

[0024] Figure 4 This is a structural diagram of the rear housing from another perspective in an embodiment of the present utility model;

[0025] Figure 5 In the embodiment of the present utility model Figure 4 A local enlarged structural diagram in FIG.

[0026] Figure 6 This is a schematic diagram of the exploded structure of the connection structure between the rear housing and the bracket in an embodiment of the present utility model;

[0027] Figure 7 In the embodiment of the present utility model Figure 6 A schematic diagram of the local enlarged structure at point B in FIG.

[0028] Figure 8 This is a schematic diagram of the connection structure between the rear shell, the front shell and the bracket in an embodiment of the present utility model;

[0029] Figure 9 It is a schematic cross-sectional view of a pedestrian warning device in an embodiment of the present utility model.

[0030] Explanation of the accompanying drawings: 1. Rear shell; 11. Bottom plate; 12. Terminal connector; 121. Plug socket; 1211. Positioning groove; 122. Plug tube; 13. Pin; 131. Straight section; 132. Bend section; 1321. Plug slot; 14. Bracket fixing part; 141. L-shaped snap-on ear; 141a. Short arm; 141b. Long arm; 142. Wedge-shaped top block; 15. Basin; 151. Annular step groove; 16. Annular support; 17. Elastic support member; 2. Sound-generating component; 21. Vibration mechanism; 211. Sound membrane; 212. Voice coil; 22. Magnetic circuit mechanism; 3. Front shell. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0032] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly attached to the other element or there may be an intermediate element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only implementation methods.

[0033] Unless otherwise defined, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which this invention pertains. The terms used in this specification are for the purpose of describing specific embodiments only and are not intended to limit this invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0034] like Figures 1 to 9 The pedestrian warning device shown includes a rear shell 1, a sound generating assembly 2 and a front shell 3. Figures 1 to 3 As shown in , the rear housing 1 includes a base plate 11 and a terminal connector 12 integrally formed on the base plate 11. The terminal connector 12 includes a socket 121 perpendicular to the edge of the base plate 11 and a socket tube 122 connected to the side wall of the socket 121. A pin 13 is also integrally injection-molded in the terminal connector 12. One end of the pin 13 is disposed in the socket tube 122 for connecting to an external circuit, and the other end of the pin 13 passes through the socket 121 and protrudes from the inner wall of the socket 121.

[0035] The sound-generating assembly 2 includes a magnetic circuit mechanism 22 fixed to the rear housing 1 and a vibrating mechanism 21 vibratingly connected to the rear housing 1. The vibrating mechanism 21 includes a diaphragm 211 and a voice coil 212 connected to the diaphragm 211. The leads of the voice coil 212 are connected to the pins 13. This arrangement enables the voice coil 212 to reciprocate in the magnetic field created by the magnetic circuit mechanism 22 when energized, cutting through the magnetic flux lines, thereby driving the diaphragm 211 to vibrate and produce sound. The front housing 3 is mounted over the rear housing 1 and connected to the base plate 11. It should be noted that in this embodiment of the present invention, cost reduction is achieved by integrally molding the pins 13 within the terminal connector 12. This integral molding method can be injection molding, allowing the pins 13 to be securely fixed within the socket 121. The external circuit here refers to the drive circuit used to drive the voice coil 212 to vibrate according to a set pattern. This drive circuit is conventional and will not be described in detail here. In this embodiment of the present invention, the rear housing 1 can be made of plastic.

[0036] In the above embodiment, the pin 13 is directly injection-molded into the terminal connector 12 to achieve direct connection between the pin 13 and the lead of the sound membrane 211. Compared with the prior art, the circuit board is omitted, and the pin 13 can be directly connected to the lead of the voice coil, thereby omitting more installation steps and reducing costs.

[0037] Based on the above embodiments, Figure 3 As shown in , the pin 13 is L-shaped, including a straight section 131 that is inside the plug tube 122 and passes through the socket 121, and a bent section 132 that protrudes from the socket 121. In an embodiment of the present invention, the pin 13 is made of conductive material, and the external circuit is connected by plugging into the plug tube 122. The end of the pin 13 that is inside the plug tube 122 is connected to the external circuit. The bent section 132 is inside the socket 121, and the inside here refers to the upper space of the bottom plate 11. In an embodiment of the present invention, the lead on the voice coil 212 is directly connected to the pin 13; the bent section 132 can improve the reliability of the connection by bending, and avoid the vibration of the sound membrane causing the lead to be disconnected from the pin 13.

[0038] In the embodiment of the present utility model, as Figure 3 and Figure 4 As shown in FIG, the bent section 132 of the pin 13 can be as follows Figure 3 As shown in the figure, the pin 13 is arranged perpendicular to the bottom plate 11, that is, the pin 13 is arranged in a vertical manner, and the free end of the bent section 132 is at the top. This structural form can also reduce the length of the lead wire; In addition, in other embodiments of the present invention, such as Figure 4As shown in the figure, the bending section 132 is arranged in parallel to the bottom plate 11, that is, the bending section 132 and the straight section 131 are in the same horizontal plane, and in the embodiment of the utility model, the pin 13 has two and is symmetrically arranged, the two bending sections 132 are bent in the direction away from each other, through the setting of the structure form, the distance between the two voice coil leads can be increased as much as possible, and the interference between them is reduced.

[0039] The specific structure of the bending section 132 is as shown in the figure Figure 5 As shown in the figure, the end of the bending section 132 also has a plug-in slot 1321 for connecting with the lead of the voice coil. In the embodiment of the utility model, the end of the plug-in slot 1321 is flared, the width of the plug-in slot 1321 is matched with the diameter of the lead, so that when the lead is connected, the lead only needs to be inserted into the plug-in slot 1321, and then welded or wrapped and fixed.

[0040] Please refer to Figure 3 and Figure 5 In the embodiment of the utility model, the top of the plug-in seat 121 is also provided with a positioning slot 1211, the track of the positioning slot 1211 corresponds to the front shell 3, and the front shell 3 is embedded and positioned. Please refer to Figure 8 In the embodiment of the utility model, the structure of the front shell 3 has a variety of forms, and the sidewall of the front shell 3 has a slot corresponding to the plug-in seat 121, the top of the slot has a positioning strip matched with the positioning slot 1211 of the top of the plug-in seat 121, and when the front shell 3 is connected with the rear shell 1, the positioning of the positioning slot 1211 not only improves the connection accuracy of the front shell 3 and the rear shell 1, but also strengthens the overall strength of the structure.

[0041] In the embodiment of the utility model, in order to further reduce the difficulty of assembly, as shown in the figure Figure 2 and Figure 6 The bottom plate 11 is also integrally formed with a bracket fixing part 14 at the bottom, and the bracket fixing part 14 is used for the plug-in fixing of the bracket. Of course, it should be pointed out here that the specific structure of the plug-in fixing of the bracket fixing part 14 has a variety of forms, such as buckle structure and the like, and those skilled in the art can set it according to the needs, and the effect of saving cost and improving the convenience of connection is also achieved through the way of being integrally formed at the bottom of the bottom plate 11 and being plug-in fixed.

[0042] Specifically, in some embodiments of the utility model, as shown in the figure Figure 6 and Figure 7As shown in FIG, the bracket fixing member 14 includes two L-shaped snap-fit ​​ears 141 arranged opposite to each other. The L-shaped snap-fit ​​ears 141 include a short arm 141a and a long arm 141b perpendicular to the short arm 141a. The short arm 141a is fixed vertically to the base plate 11. The long arms 141b of the two L-shaped snap-fit ​​ears 141 are arranged parallel to each other. The bracket is snapped into the gap between the two L-shaped snap-fit ​​ears 141 and the base plate 11. Please refer to Figure 8 When fixing, just insert the bracket from the side between the two L-shaped snap ears 141. In the embodiment of the present invention, a clearance fit can be used to fix the bracket through the friction between the bracket and the L-shaped snap ears 141.

[0043] In addition, in order to further improve the reliability of the bracket fixation, e.g. Figure 7 As shown in , the bracket fixing member 14 further includes a wedge-shaped top block 142 disposed between two L-shaped snap-fit ​​ears 141. The wedge-shaped top block 142 is formed on the base plate 11, and the thickness of the wedge-shaped top block 142 gradually increases from the direction close to the bracket insertion direction to the direction away from the bracket insertion direction. The provision of the wedge-shaped top block 142 can squeeze the bracket, thereby further increasing the friction between the bracket and the L-shaped snap-fit ​​ears 141 and the base plate 11. In addition, in an embodiment of the present invention, a bayonet adapted to the wedge-shaped top block 142 can be provided on the bracket. When the bracket is inserted into place, the wedge-shaped top block 142 snaps into the bayonet, thereby preventing the bracket from shaking.

[0044] In the embodiment of the present utility model, in order to further reduce the cost, as Figure 9 As shown in , the rear shell 1 also has a basin frame 15 integrally formed on the bottom plate 11, and the top of the basin frame 15 has an annular step groove 151. The edge of the sound diaphragm 211 is fixed to the annular step groove 151, and the edge of the sound diaphragm 211 is in contact with the front shell 3 at the same time. In an embodiment of the present utility model, the basin frame 15 is a tubular structure perpendicular to the bottom plate 11, and the middle of the basin frame 15 can adopt a hollow structure. With the setting of this structural form, on the one hand, there is no need to perform separate processing on the basin frame 15, and on the other hand, it also saves the connection process between the basin frame 15 and the rear shell 1. Moreover, with the setting of this structural form, the speaker and the rear shell 1 are integrated together, rather than a separate speaker structure, thereby reducing the use of components such as the basin frame for fixing the diaphragm and the magnetic bowl for fixing the magnet in the prior art. It should be pointed out here that in an embodiment of the present utility model, the assembly of the magnetic circuit mechanism 22 can be as follows Figure 3 As shown in FIG, the fixing installation is performed from the bottom of the base plate 11, or as Figure 9As shown in the figure, the magnetic circuit mechanism 22 is installed from the top of the bottom plate 11, and is fixed on the bottom plate, so that the rear shell 1 simultaneously has the functions of fixed installation of the magnetic circuit mechanism 22, fixed installation of the sound film 211, connection of the lead wire of the voice coil 212 with the pin 13, and support and protection of the internal parts.

[0045] In addition, in the embodiment of the utility model, in order to make the pedestrian warning device have the functions of pedestrian warning and car horn simultaneously, like Figure 9 As shown in the figure, the bottom plate 11 is also integrally formed with a ring-shaped support 16, the ring-shaped support 16 is inside the basin frame 15, the height of the ring-shaped support 16 is lower than that of the basin frame 15, the top of the ring-shaped support 16 is also fixedly connected with an elastic support 17, the elastic support 17 is annular and has a wavy cross section, and the inner side of the elastic support 17 is fixedly connected with the voice coil 212. In this way, the elastic support 17 is fixedly connected with the voice coil 212, which provides stronger support for the vibration of the sound film 211, so that the voice coil 212 can provide stronger amplitude and vibration frequency, thereby improving the sound pressure of the sound film 211 to achieve the same level sound effect of a daily vehicle horn. In the embodiment of the utility model, the elastic support 17 can be made of metal material or hard corrugated paper structure, and through the setting of this structure, the sound pressure of the pedestrian warning device is further improved, so that the pedestrian warning device integrates the avas and the horn, compared with the separate setting mode of the horn and the avas in the prior art, not only the cost is saved, but also the installation space is saved.

[0046] Those skilled in the art should understand that the utility model is not limited by the above-mentioned embodiments, and the above-mentioned embodiments and descriptions in the specification are only to illustrate the principle of the utility model, and various changes and improvements can be made without departing from the spirit and scope of the utility model, and these changes and improvements all fall within the scope of the claimed utility model. The scope of protection of the utility model is defined by the appended claims and their equivalents.

Claims

1. A pedestrian warning device, characterized in that: include: A rear shell, the rear shell including a bottom plate and a terminal connector integrally formed on the bottom plate, the terminal connector including a socket perpendicular to the edge of the bottom plate and a socket tube connected to the side wall of the socket, the terminal connector also having a pin integrally injection-molded therein, one end of the pin disposed in the socket tube for connection to an external circuit, the other end of the pin passing through the socket and protruding from the inner wall of the socket; A sound-generating assembly, comprising a magnetic circuit mechanism fixed to the rear housing and a vibration mechanism vibratingly connected to the rear housing, the vibration mechanism comprising a diaphragm and a voice coil connected to the diaphragm, the lead of the voice coil being connected to the pin; The front shell is covered on the rear shell and connected to the bottom plate.

2. The pedestrian warning device according to claim 1, characterized in that: The plug pin is L-shaped, and comprises a straight section located in the plug tube and passing through the socket, and a bent section protruding from the socket.

3. The pedestrian warning device according to claim 2, characterized in that: The bending section is arranged perpendicular to the bottom plate or parallel to the bottom plate.

4. The pedestrian warning device according to claim 2, characterized in that: The end of the bent section also has a plug-in slot for connecting to the lead wire of the voice coil.

5. The pedestrian warning device according to claim 1, characterized in that: A positioning groove is further provided on the top of the socket, and the track of the positioning groove corresponds to the front shell, which is used for embedding and positioning of the front shell.

6. The pedestrian warning device according to claim 1, characterized in that: A bracket fixing piece is also integrally formed at the bottom of the base plate, and the bracket fixing piece is used for inserting and fixing the bracket.

7. The pedestrian warning device according to claim 6, characterized in that: The bracket fixing part includes two oppositely arranged L-shaped snap-in ears, each of which includes a short arm and a long arm perpendicular to the short arm. The short arm is vertically fixed to the base plate, and the long arms of the two L-shaped snap-in ears are arranged parallel to each other. The bracket is snapped into the gap between the two L-shaped snap-in ears and the base plate.

8. The pedestrian warning device according to claim 7, characterized in that: The bracket fixing piece also includes a wedge-shaped top block arranged between the two L-shaped clamping ears. The wedge-shaped top block is formed on the bottom plate, and the thickness of the wedge-shaped top block is gradually increased from close to the bracket insertion direction to away from the bracket insertion direction.

9. The pedestrian warning device according to claim 1, characterized in that: The rear shell also has a basin frame integrally formed on the bottom plate, and the top of the basin frame has an annular step groove. The edge of the sound membrane is fixed to the annular step groove, and the edge of the sound membrane is in contact with the front shell at the same time.

10. The pedestrian warning device according to claim 9, characterized in that: An annular support is also integrally formed on the bottom plate, and the annular support is located inside the basin frame. The height of the annular support is lower than the basin frame. An elastic support member is also fixed to the top of the annular support. The elastic support member is annular and has a wavy cross-section. The inner side of the elastic support member is fixed to the voice coil.

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