Rear bumper device integrated with exciter and automobile

Abstract

The invention relates to the technical field of automobile manufacturing, in particular to a rear bumper device integrated with an exciter and an automobile. The rear bumper device integrated with the exciter comprises a bumper support used for being installed on a vehicle; the bumper body is installed on the bumper support, a gap is formed between the bumper body and the bumper support so that a cavity can be formed between the bumper body and the bumper support, and the bumper body is wrapped with a bumper skin; the sound exciter is installed in a cavity between the bumper support and the bumper body, and the surface of the sound exciter is wrapped with a heat preservation layer. The sound exciter is arranged between the bumper and the mounting bracket of the bumper, the sound exciter is mounted on the inner side of the bumper without damaging the modeling characteristics of the whole vehicle, and the bumper skin is used as a medium to vibrate and transmit sound. Furthermore, a thermal insulation layer is arranged on the surface of the sound exciter, so that the influence of a low-temperature environment on the sound quality is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of automobile manufacturing, and in particular to a rear bumper device with an integrated exciter and an automobile. Background Art

[0002] With the development of electric and intelligent vehicles, cars are no longer just a means of transportation for drivers and passengers, but another place for leisure and entertainment. Traditional cars only meet the function of transportation and pursue simplicity and practicality, while in the future, electrification and entertainment will be the new development trend, and high-quality music speakers are an urgent solution to entertainment needs.

[0003] In the related technology, vehicles with external sound function will be equipped with a car audio system that can play music outside the car. When users are camping outdoors, the car audio system can play music outside. However, the external environment has a great impact on the external sound playback. How to take into account the impact of low temperature environment on sound quality without destroying the overall vehicle styling characteristics has become a difficult problem that practitioners need to solve urgently. Summary of the invention

[0004] Regarding the related technologies, the external environment of the vehicle has a great influence on the external sound playback. Vehicles with external sound function are difficult to improve the quality of the external sound without destroying the styling characteristics of the entire vehicle.

[0005] In a first aspect, an embodiment of the present application provides a rear bumper device with an integrated exciter, which includes: a bumper bracket, a bumper body and a sound exciter; wherein:

[0006] A bumper bracket, which is used to be installed on a vehicle;

[0007] A bumper body is mounted on the bumper bracket, and a gap is set between the bumper body and the bumper bracket to form a cavity therebetween, and the bumper body is wrapped with a bumper skin;

[0008] A sound exciter is installed in a cavity between the bumper bracket and the bumper body. The surface of the sound exciter is wrapped with a heat-insulating layer, and the sound exciter is used to transmit sound using the bumper skin as a medium.

[0009] In combination with the first aspect, in one implementation, an energy absorbing structure is provided on the bumper bracket.

[0010] It should be noted that the sound exciter is arranged on the inner side of the bumper body, which can prevent the sound exciter from being directly hit and damaged. However, once the bumper body collides, the vibration energy will still be transmitted to the sound exciter, and even if the bumper body is hit violently, it will still exert pressure on the sound exciter and cause damage to it.

[0011] In combination with the first aspect, in one implementation, the energy absorbing structure on the bumper bracket is a weakened groove, and the weakened groove corresponds to the position of the sound exciter.

[0012] It is worth mentioning that the bumper bracket has a weakened groove at the assembly position of the sound exciter. When the vehicle collides, the force is transmitted and the sound exciter can act as a buffer at the weakened groove to absorb part of the collision energy, which can play a partial pedestrian protection effect to a certain extent.

[0013] In combination with the first aspect, in one embodiment, the energy absorption structure on the bumper bracket is an energy absorption box, and the energy absorption box includes an outer collapse tube and a collapse groove. The outer collapse tube is a hollow structure, and the collapse groove is arranged on the outside of the outer collapse tube, and the collapse groove is perpendicular to the axis of the outer collapse tube.

[0014] It should be noted that when the energy absorbing box is subjected to excessive impact energy, the energy absorbing box will collapse to protect the sound exciter from damage.

[0015] In combination with the first aspect, in one implementation, a buffer structure is provided in the outer collapse tube.

[0016] In combination with the first aspect, in one implementation, a heat dissipation hole is provided on the bumper bracket, and the heat dissipation hole corresponds to the position of the sound exciter.

[0017] It is understandable that in hot summer weather, the sound exciter is prone to high temperature and thus damage to the sound exciter. The bumper bracket of the present application is provided with heat dissipation holes to improve the heat dissipation capacity of the sound exciter.

[0018] In combination with the first aspect, in one implementation, the heat dissipation holes on the bumper bracket are aligned with the maximum projection plane of the sound exciter.

[0019] In combination with the first aspect, in one implementation, the thermal insulation layer includes: waterproof foam wrapped on the surface of the sound exciter.

[0020] It is understandable that waterproof foam, due to its unique closed cell structure, can effectively prevent water penetration and is suitable for occasions that require waterproof protection. The thermal insulation performance of waterproof foam enables waterproof foam to effectively maintain temperature in cold environments and reduce energy loss. Furthermore, the independent cell structure of waterproof foam gives waterproof foam good shock absorption performance, which is suitable for items that require cushioning protection.

[0021] In combination with the first aspect, in one embodiment, the thermal insulation layer is a waterproof and sound-permeable membrane.

[0022] In a second aspect, an embodiment of the present application provides a car, comprising: a rear bumper mounting bracket as described in any one of the above.

[0023] The beneficial effects brought by the technical solution provided by the embodiment of the present application include at least:

[0024] The present application arranges the sound exciter between the bumper and its mounting bracket, the sound exciter is installed inside the bumper without destroying the styling features of the whole vehicle, and the bumper skin is used as a medium for vibration transmission of sound. Furthermore, a heat preservation layer is arranged on the surface of the sound exciter to reduce the impact of low temperature environment on the sound quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0026] Figure 1 It is a schematic diagram of the rear bumper device in the embodiment of the present application.

[0027] In the figure: 1. bumper bracket; 11. weakened groove; 2. bumper body; 3. cavity; 4. insulation layer; 5. sound exciter. DETAILED DESCRIPTION

[0028] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0029] Regarding the related technologies, the external environment of the vehicle has a great influence on the external sound playback. Vehicles with external sound function are difficult to improve the quality of the external sound without destroying the styling characteristics of the entire vehicle.

[0030] It should be noted that vehicles with external sound transmission function will be equipped with an in-vehicle audio system that can emit sound to the outside of the vehicle. When users are camping outdoors, the in-vehicle audio system can play music to the outside. However, the external environment of the car has a great influence on the external sound playback. On the one hand, the sound player is relatively fragile. If it is placed directly outside the car, it is easy to be damaged by bumps. On the other hand, when playing outside the car, the player will be affected by the low temperature environment. Therefore, how to take into account the impact of the low temperature environment on the sound quality without destroying the styling characteristics of the entire vehicle has become a difficult problem that practitioners need to solve urgently.

[0031] In order to solve the above technical problems, firstly, Figure 1 As shown, an embodiment of the present application provides a rear bumper device with an integrated exciter, which includes:

[0032] A bumper bracket 1 is used to be installed on a vehicle. A bumper body 2 is installed on the bumper bracket 1, and a gap is set between the bumper body 2 and the bumper bracket 1 to form a cavity 3 therebetween, and the bumper body 2 is wrapped with a bumper skin. A sound exciter 5 is installed in the cavity 3 between the bumper bracket 1 and the bumper body 2, and a heat-insulating layer 4 is wrapped on the surface of the sound exciter 5, and the sound exciter 5 is used to transmit sound using the bumper skin as a medium.

[0033] It is worth noting that, on the one hand, the present application arranges the sound exciter 5 between the bumper and its mounting bracket. The sound exciter is installed on the inner side of the bumper without destroying the styling features of the entire vehicle, and uses the bumper skin as a medium for vibration and sound transmission. On the other hand, a thermal insulation layer is provided on the surface of the sound exciter 5 to reduce the impact of the low temperature environment on the sound quality. Furthermore, the sound exciter 5 is arranged in the cavity 3 between the bumper body 2 and the bumper bracket 1, that is, in the bumper skin of the bumper body 2. In addition to using the bumper skin as a transmission medium for sound transmission, the sound exciter 5 can also be used to strengthen the bumper skin.

[0034] In some optional implementations, an energy absorbing structure is provided on the bumper bracket 1 .

[0035] It should be noted that the sound exciter 5 is arranged on the inner side of the bumper body 2, which prevents the sound exciter 5 from being directly hit and damaged. However, once the bumper body 2 collides, the vibration energy will still be transmitted to the sound exciter 5, and even if the bumper body 2 is hit violently, pressure will still be applied to the sound exciter 5, causing damage to it.

[0036] In a first specific implementation manner provided in the present application, the energy absorbing structure on the bumper bracket 1 is a weakened groove 11 , and the weakened groove 11 corresponds to the position of the sound exciter 5 .

[0037] It is worth mentioning that the bumper bracket 1 has a weakened groove 11 at the assembly position of the sound exciter 5. When the vehicle collides, the force is transmitted, and the sound exciter 5 can act as a buffer at the weakened groove 11 to absorb part of the collision energy, which can play a partial pedestrian protection effect to a certain extent.

[0038] The present application provides a second specific implementation manner, wherein the energy absorption structure on the bumper bracket 1 is an energy absorption box, and the energy absorption box includes an outer crush tube, which is hollow; a crush groove, which is arranged outside the outer crush tube, and the crush groove is perpendicular to the axis of the outer crush tube. Furthermore, a buffer structure is arranged inside the outer crush tube.

[0039] It should be noted that when the energy absorbing box is subjected to excessive impact energy, the energy absorbing box will collapse to protect the sound exciter 5 from damage.

[0040] In some optional implementations, the bumper bracket 1 is provided with heat dissipation holes, and the heat dissipation holes correspond to the positions of the sound exciter 5 .

[0041] It is understandable that in hot summer weather, the sound exciter 5 is prone to high temperature and thus damage to the sound exciter 5 . The bumper bracket 1 of the present application is provided with heat dissipation holes to improve the heat dissipation capacity of the sound exciter 5 .

[0042] Preferably, in order to maximize the heat dissipation efficiency of the heat dissipation holes, the heat dissipation holes arranged on the bumper bracket 1 of the present application are aligned with the maximum projection plane of the sound exciter 5 .

[0043] In an optional embodiment, the heat-insulating layer 4 includes: waterproof foam, which is wrapped around the surface of the sound exciter 5. Preferably, the waterproof foam is wrapped around the circumference of the sound exciter 5.

[0044] It is understandable that waterproof foam, due to its unique closed cell structure, can effectively prevent water penetration and is suitable for occasions that require waterproof protection. The thermal insulation performance of waterproof foam enables waterproof foam to effectively maintain temperature in cold environments and reduce energy loss. Furthermore, the independent cell structure of waterproof foam gives waterproof foam good shock absorption performance, which is suitable for items that require cushioning protection.

[0045] In another optional implementation manner of the present application, the thermal insulation layer 4 is a waterproof and sound-permeable membrane.

[0046] It is worth mentioning that the waterproof sound-permeable membrane is made of modified polyimide material, which not only has excellent waterproof properties, but also has better sound transmission effect compared with conventional polyimide, so that the volume of the sound exciter 5 will not be disturbed by the setting of the waterproof membrane, thereby providing a better experience.

[0047] In a second aspect, the present application provides an automobile exterior protection system, which includes: a rear bumper device with an integrated exciter, which includes:

[0048] A bumper bracket 1 is used to be installed on a vehicle. A bumper body 2 is installed on the bumper bracket 1, and a gap is set between the bumper body 2 and the bumper bracket 1 to form a cavity 3 therebetween, and the bumper body 2 is wrapped with a bumper skin. A sound exciter 5 is installed in the cavity 3 between the bumper bracket 1 and the bumper body 2, and a heat-insulating layer 4 is wrapped on the surface of the sound exciter 5, and the sound exciter 5 is used to transmit sound using the bumper skin as a medium.

[0049] It is worth noting that, on the one hand, the present application arranges the sound exciter 5 between the bumper and its mounting bracket. The sound exciter is installed on the inner side of the bumper without destroying the styling features of the entire vehicle, and uses the bumper skin as a medium for vibration and sound transmission. On the other hand, a thermal insulation layer is provided on the surface of the sound exciter 5 to reduce the impact of the low temperature environment on the sound quality. Furthermore, the sound exciter 5 is arranged in the cavity 3 between the bumper body 2 and the bumper bracket 1, that is, in the bumper skin of the bumper body 2. In addition to using the bumper skin as a transmission medium for sound transmission, the sound exciter 5 can also be used to strengthen the bumper skin.

[0050] In some optional implementations, an energy absorbing structure is provided on the bumper bracket 1 .

[0051] It should be noted that the sound exciter 5 is arranged on the inner side of the bumper body 2, which prevents the sound exciter 5 from being directly hit and damaged. However, once the bumper body 2 collides, the vibration energy will still be transmitted to the sound exciter 5, and even if the bumper body 2 is hit violently, pressure will still be applied to the sound exciter 5, causing damage to it.

[0052] In a first specific implementation manner provided in the present application, the energy absorbing structure on the bumper bracket 1 is a weakened groove 11 , and the weakened groove 11 corresponds to the position of the sound exciter 5 .

[0053] It is worth mentioning that the bumper bracket 1 has a weakened groove 11 at the assembly position of the sound exciter 5. When the vehicle collides, the force is transmitted, and the sound exciter 5 can act as a buffer at the weakened groove 11 to absorb part of the collision energy, which can play a partial pedestrian protection effect to a certain extent.

[0054] The present application provides a second specific implementation manner, wherein the energy absorption structure on the bumper bracket 1 is an energy absorption box, and the energy absorption box includes an outer crush tube, which is hollow; a crush groove, which is arranged outside the outer crush tube, and the crush groove is perpendicular to the axis of the outer crush tube. Furthermore, a buffer structure is arranged inside the outer crush tube.

[0055] It should be noted that when the energy absorbing box is subjected to excessive impact energy, the energy absorbing box will collapse to protect the sound exciter 5 from damage.

[0056] In some optional implementations, the bumper bracket 1 is provided with heat dissipation holes, and the heat dissipation holes correspond to the positions of the sound exciter 5 .

[0057] It is understandable that in hot summer weather, the sound exciter 5 is prone to high temperature and thus damage to the sound exciter 5 . The bumper bracket 1 of the present application is provided with heat dissipation holes to improve the heat dissipation capacity of the sound exciter 5 .

[0058] Preferably, in order to maximize the heat dissipation efficiency of the heat dissipation holes, the heat dissipation holes arranged on the bumper bracket 1 of the present application are aligned with the maximum projection plane of the sound exciter 5 .

[0059] In an optional embodiment, the heat-insulating layer 4 includes: waterproof foam, which is wrapped around the surface of the sound exciter 5. Preferably, the waterproof foam is wrapped around the circumference of the sound exciter 5.

[0060] It is understandable that waterproof foam, due to its unique closed cell structure, can effectively prevent water penetration and is suitable for occasions that require waterproof protection. The thermal insulation performance of waterproof foam enables waterproof foam to effectively maintain temperature in cold environments and reduce energy loss. Furthermore, the independent cell structure of waterproof foam gives waterproof foam good shock absorption performance, which is suitable for items that require cushioning protection.

[0061] In another optional implementation manner of the present application, the thermal insulation layer 4 is a waterproof and sound-permeable membrane.

[0062] It is worth mentioning that the waterproof sound-permeable membrane is made of modified polyimide material, which not only has excellent waterproof properties, but also has better sound transmission effect compared with conventional polyimide, so that the volume of the sound exciter 5 will not be disturbed by the setting of the waterproof membrane, thereby providing a better experience.

[0063] In a third aspect, the present application provides a rear enclosure system for an automobile, which includes a rear bumper device with an integrated exciter, the rear bumper device including:

[0064] A bumper bracket 1 is used to be installed on a vehicle. A bumper body 2 is installed on the bumper bracket 1, and a gap is set between the bumper body 2 and the bumper bracket 1 to form a cavity 3 therebetween, and the bumper body 2 is wrapped with a bumper skin. A sound exciter 5 is installed in the cavity 3 between the bumper bracket 1 and the bumper body 2, and a heat-insulating layer 4 is wrapped on the surface of the sound exciter 5, and the sound exciter 5 is used to transmit sound using the bumper skin as a medium.

[0065] It is worth noting that, on the one hand, the present application arranges the sound exciter 5 between the bumper and its mounting bracket. The sound exciter is installed on the inner side of the bumper without destroying the styling features of the entire vehicle, and uses the bumper skin as a medium for vibration and sound transmission. On the other hand, a thermal insulation layer is provided on the surface of the sound exciter 5 to reduce the impact of the low temperature environment on the sound quality. Furthermore, the sound exciter 5 is arranged in the cavity 3 between the bumper body 2 and the bumper bracket 1, that is, in the bumper skin of the bumper body 2. In addition to using the bumper skin as a transmission medium for sound transmission, the sound exciter 5 can also be used to strengthen the bumper skin.

[0066] In some optional implementations, an energy absorbing structure is provided on the bumper bracket 1 .

[0067] It should be noted that the sound exciter 5 is arranged on the inner side of the bumper body 2, which prevents the sound exciter 5 from being directly hit and damaged. However, once the bumper body 2 collides, the vibration energy will still be transmitted to the sound exciter 5, and even if the bumper body 2 is hit violently, pressure will still be applied to the sound exciter 5, causing damage to it.

[0068] In a first specific implementation manner provided in the present application, the energy absorbing structure on the bumper bracket 1 is a weakened groove 11 , and the weakened groove 11 corresponds to the position of the sound exciter 5 .

[0069] It is worth mentioning that the bumper bracket 1 has a weakened groove 11 at the assembly position of the sound exciter 5. When the vehicle collides, the force is transmitted, and the sound exciter 5 can act as a buffer at the weakened groove 11 to absorb part of the collision energy, which can play a partial pedestrian protection effect to a certain extent.

[0070] The present application provides a second specific implementation manner, wherein the energy absorption structure on the bumper bracket 1 is an energy absorption box, and the energy absorption box includes an outer crush tube, which is hollow; a crush groove, which is arranged outside the outer crush tube, and the crush groove is perpendicular to the axis of the outer crush tube. Furthermore, a buffer structure is arranged inside the outer crush tube.

[0071] It should be noted that when the energy absorbing box is subjected to excessive impact energy, the energy absorbing box will collapse to protect the sound exciter 5 from damage.

[0072] In some optional implementations, the bumper bracket 1 is provided with heat dissipation holes, and the heat dissipation holes correspond to the positions of the sound exciter 5 .

[0073] It is understandable that in hot summer weather, the sound exciter 5 is prone to high temperature and thus damage to the sound exciter 5 . The bumper bracket 1 of the present application is provided with heat dissipation holes to improve the heat dissipation capacity of the sound exciter 5 .

[0074] Preferably, in order to maximize the heat dissipation efficiency of the heat dissipation holes, the heat dissipation holes arranged on the bumper bracket 1 of the present application are aligned with the maximum projection plane of the sound exciter 5 .

[0075] In an optional embodiment, the heat-insulating layer 4 includes: waterproof foam, which is wrapped around the surface of the sound exciter 5. Preferably, the waterproof foam is wrapped around the circumference of the sound exciter 5.

[0076] It is understandable that waterproof foam, due to its unique closed cell structure, can effectively prevent water penetration and is suitable for occasions that require waterproof protection. The thermal insulation performance of waterproof foam enables waterproof foam to effectively maintain temperature in cold environments and reduce energy loss. Furthermore, the independent cell structure of waterproof foam gives waterproof foam good shock absorption performance, which is suitable for items that require cushioning protection.

[0077] In another optional implementation manner of the present application, the thermal insulation layer 4 is a waterproof and sound-permeable membrane.

[0078] It is worth mentioning that the waterproof sound-permeable membrane is made of modified polyimide material, which not only has excellent waterproof properties, but also has better sound transmission effect compared with conventional polyimide, so that the volume of the sound exciter 5 will not be disturbed by the setting of the waterproof membrane, thereby providing a better experience.

[0079] In a fourth aspect, the present application provides a car, comprising: a rear bumper device with an integrated exciter, the rear bumper device comprising:

[0080] A bumper bracket 1 is used to be installed on a vehicle. A bumper body 2 is installed on the bumper bracket 1, and a gap is set between the bumper body 2 and the bumper bracket 1 to form a cavity 3 therebetween, and the bumper body 2 is wrapped with a bumper skin. A sound exciter 5 is installed in the cavity 3 between the bumper bracket 1 and the bumper body 2, and a heat-insulating layer 4 is wrapped on the surface of the sound exciter 5, and the sound exciter 5 is used to transmit sound using the bumper skin as a medium.

[0081] It is worth noting that, on the one hand, the present application arranges the sound exciter 5 between the bumper and its mounting bracket. The sound exciter is installed on the inner side of the bumper without destroying the styling features of the entire vehicle, and uses the bumper skin as a medium for vibration and sound transmission. On the other hand, a thermal insulation layer is provided on the surface of the sound exciter 5 to reduce the impact of the low temperature environment on the sound quality. Furthermore, the sound exciter 5 is arranged in the cavity 3 between the bumper body 2 and the bumper bracket 1, that is, in the bumper skin of the bumper body 2. In addition to using the bumper skin as a transmission medium for sound transmission, the sound exciter 5 can also be used to strengthen the bumper skin.

[0082] In some optional implementations, an energy absorbing structure is provided on the bumper bracket 1 .

[0083] It should be noted that the sound exciter 5 is arranged on the inner side of the bumper body 2, which prevents the sound exciter 5 from being directly hit and damaged. However, once the bumper body 2 collides, the vibration energy will still be transmitted to the sound exciter 5, and even if the bumper body 2 is hit violently, pressure will still be applied to the sound exciter 5, causing damage to it.

[0084] In a first specific implementation manner provided in the present application, the energy absorbing structure on the bumper bracket 1 is a weakened groove 11 , and the weakened groove 11 corresponds to the position of the sound exciter 5 .

[0085] It is worth mentioning that the bumper bracket 1 has a weakened groove 11 at the assembly position of the sound exciter 5. When the vehicle collides, the force is transmitted, and the sound exciter 5 can act as a buffer at the weakened groove 11 to absorb part of the collision energy, which can play a partial pedestrian protection effect to a certain extent.

[0086] The present application provides a second specific implementation manner, wherein the energy absorption structure on the bumper bracket 1 is an energy absorption box, and the energy absorption box includes an outer crush tube, which is hollow; a crush groove, which is arranged outside the outer crush tube, and the crush groove is perpendicular to the axis of the outer crush tube. Furthermore, a buffer structure is arranged inside the outer crush tube.

[0087] It should be noted that when the energy absorbing box is subjected to excessive impact energy, the energy absorbing box will collapse to protect the sound exciter 5 from damage.

[0088] In some optional implementations, the bumper bracket 1 is provided with heat dissipation holes, and the heat dissipation holes correspond to the positions of the sound exciter 5 .

[0089] It is understandable that in hot summer weather, the sound exciter 5 is prone to high temperature and thus damage to the sound exciter 5 . The bumper bracket 1 of the present application is provided with heat dissipation holes to improve the heat dissipation capacity of the sound exciter 5 .

[0090] Preferably, in order to maximize the heat dissipation efficiency of the heat dissipation holes, the heat dissipation holes arranged on the bumper bracket 1 of the present application are aligned with the maximum projection plane of the sound exciter 5 .

[0091] In an optional embodiment, the heat-insulating layer 4 includes: waterproof foam, which is wrapped around the surface of the sound exciter 5. Preferably, the waterproof foam is wrapped around the circumference of the sound exciter 5.

[0092] It is understandable that waterproof foam, due to its unique closed cell structure, can effectively prevent water penetration and is suitable for occasions that require waterproof protection. The thermal insulation performance of waterproof foam enables waterproof foam to effectively maintain temperature in cold environments and reduce energy loss. Furthermore, the independent cell structure of waterproof foam gives waterproof foam good shock absorption performance, which is suitable for items that require cushioning protection.

[0093] In another optional implementation manner of the present application, the thermal insulation layer 4 is a waterproof and sound-permeable membrane.

[0094] It is worth mentioning that the waterproof sound-permeable membrane is made of modified polyimide material, which not only has excellent waterproof properties, but also has better sound transmission effect compared with conventional polyimide, so that the volume of the sound exciter 5 will not be disturbed by the setting of the waterproof membrane, thereby providing a better experience.

[0095] In summary, the present application arranges the sound exciter between the bumper and its mounting bracket, and the sound exciter is installed on the inner side of the bumper without destroying the styling features of the whole vehicle, and uses the bumper skin as a medium for vibration transmission of sound. Furthermore, a thermal insulation layer is provided on the surface of the sound exciter to reduce the impact of low temperature environment on sound quality. On the one hand, the present application arranges the sound exciter 5 between the bumper and its mounting bracket, and the sound exciter is installed on the inner side of the bumper without destroying the styling features of the whole vehicle, and uses the bumper skin as a medium for vibration transmission of sound. On the other hand, a thermal insulation layer is provided on the surface of the sound exciter 5 to reduce the impact of low temperature environment on sound quality. Furthermore, the sound exciter 5 is arranged in the cavity 3 between the bumper body 2 and the bumper bracket 1, that is, in the bumper skin of the bumper body 2. In addition to using the bumper skin as a transmission medium for sound transmission, the sound exciter 5 can also be used to strengthen the bumper skin.

[0096] In the description of the present application, it should be noted that the terms "upper", "lower", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it 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 it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0097] It should be noted that, in this application, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0098] The above description is only a specific implementation of the present application, so that those skilled in the art can understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest range consistent with the principles and novel features applied for herein.

Claims

1. A rear bumper device with an integrated exciter, characterized in that: include: A bumper bracket (1) for installation on a vehicle; A bumper body (2) is mounted on the bumper bracket (1), and a gap is provided between the bumper body (2) and the bumper bracket (1) to form a cavity (3) therebetween, and the bumper body (2) is wrapped with a bumper skin; A sound exciter (5) is installed in a cavity (3) between the bumper bracket (1) and the bumper body (2); the surface of the sound exciter (5) is wrapped with a heat-insulating layer (4); and the sound exciter (5) is used to transmit sound using the bumper skin as a medium.

2. The rear bumper device according to claim 1, characterized in that: The bumper bracket (1) is provided with an energy absorbing structure.

3. The rear bumper device according to claim 2, characterized in that: The energy absorbing structure on the bumper bracket (1) is a weakened groove (11), and the weakened groove (11) corresponds to the position of the sound exciter (5).

4. The rear bumper device according to claim 2, characterized in that: The energy absorption structure on the bumper bracket (1) is an energy absorption box, which comprises an outer crush tube and a crush groove. The outer crush tube is a hollow structure, and the crush groove is arranged outside the outer crush tube, and the crush groove is perpendicular to the axis of the outer crush tube.

5. The rear bumper device according to claim 4, characterized in that: A buffer structure is arranged inside the outer collapse tube.

6. The rear bumper device according to claim 1, characterized in that: The bumper bracket (1) is provided with a heat dissipation hole, and the heat dissipation hole corresponds to the position of the sound exciter (5).

7. The rear bumper device according to claim 6, characterized in that: The heat dissipation holes on the bumper bracket (1) are aligned with the maximum projection surface of the sound exciter (5).

8. The rear bumper device according to claim 1, characterized in that: The thermal insulation layer (4) comprises: waterproof foam, which is wrapped around the surface of the sound exciter (5).

9. The rear bumper device according to claim 1, characterized in that: The thermal insulation layer (4) is a waterproof and sound-permeable membrane.

10. An automobile, characterized in that: include: A rear bumper mounting bracket as claimed in any one of claims 1 to 9.

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