CN111923843B - Automobile - Google Patents
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- CN111923843B CN111923843B CN202010641840.1A CN202010641840A CN111923843B CN 111923843 B CN111923843 B CN 111923843B CN 202010641840 A CN202010641840 A CN 202010641840A CN 111923843 B CN111923843 B CN 111923843B
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- sound
- hole
- side door
- cavity
- automobile
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R11/00—Arrangements for holding or mounting articles, not otherwise provided for
- B60R11/02—Arrangements for holding or mounting articles, not otherwise provided for for radio sets, television sets, telephones, or the like; Arrangement of controls thereof
- B60R11/0217—Arrangements for holding or mounting articles, not otherwise provided for for radio sets, television sets, telephones, or the like; Arrangement of controls thereof for loud-speakers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
- B60Q5/00—Arrangement or adaptation of acoustic signal devices
Abstract
The invention provides an automobile. The automobile comprises an automobile door with an accommodating space and an on-board sound wave device arranged in the automobile door, wherein the on-board sound wave device comprises a shell with a cavity and a sound production unit which is accommodated in the cavity and fixed with the shell, the sound production unit separates the cavity into a sound guide front cavity and a coupling rear cavity, the shell is provided with a first sound outlet hole and a second sound outlet hole which are communicated with the sound guide front cavity and are mutually spaced, the first sound outlet hole is communicated with the sound guide front cavity and an automobile inner space, and the second sound outlet hole is communicated with the sound guide front cavity and an automobile outer space. The sound of simulation sports car engine sound is sent to sound producing unit can propagate car inner space and car outer space through sound conduction front chamber, first sound hole and second sound hole, realizes that the sound that a sound producing unit sent can propagate car inner space and car outer space simultaneously, has avoided the increase of the cost that installation sound producing unit caused and design complexity on the outline of car outside, has reduced the degree of difficulty that the driving that realizes simulation sports car engine sound experienced simultaneously.
Description
[ technical field ] A method for producing a semiconductor device
The invention relates to the technical field of vehicle-mounted sound fields, in particular to an automobile with a vehicle-mounted sound wave device.
[ background of the invention ]
Nowadays, automobile electronic technology is rapidly developed, and it has become an indispensable part of automobiles to provide users with excellent driving experience. Moreover, cross-boundary automobiles have become a development trend of the whole automobile industry, and especially in aspects of sedan running, sports cars, coure SUV and the like, the cross-boundary combination fused with sports car elements is not the exception. In aspects of appearance, driving controllability, interior trim style, power and the like, the cross-border vehicle initially has most elements of a sports car, so that better user experience is brought to a user, but the cross-border vehicle has obvious defects in the aspect of simulating the sound of a sports car engine. The reason is that in consideration of various factors such as target market, cost, oil consumption and displacement, the cross-border vehicle cannot really adopt an engine with a high cylinder number like a sports car, for example, a common household car is a 3-cylinder or 4-cylinder engine, while a top-level sports car adopts a 12-cylinder engine, so that the engine sound has obvious difference in the running process of the engine, and the driving experience is obviously influenced.
At present, for the space in the car, the sound of a high-cylinder-number engine can be simulated by adopting a vehicle-mounted loudspeaker, and the driving experience of simulating the sound of the sports car engine is provided for the personnel in the car. For the space outside the vehicle and around the vehicle body, the loudspeaker is generally mounted on the external contour of the vehicle to emit the engine sound simulating the high-cylinder engine and directly radiate to the external space, and because the loudspeaker is mounted on the external contour of the vehicle, the requirements for reliability and safety are far higher than those of the loudspeaker mounted in the vehicle, so that the cost, the design complexity and the implementation difficulty of the whole scheme are increased.
Therefore, there is a need for an automobile having an on-board sound wave device.
[ summary of the invention ]
The invention aims to provide an automobile, which aims to reduce the cost, the design complexity and the realization difficulty of the whole scheme when the sports car engine sound is simulated.
In order to achieve the above purpose, the first technical solution of the present invention is as follows:
the utility model provides an automobile, is including the door that has accommodating space, the automobile is still including locating on-vehicle sound wave device in the door, on-vehicle sound wave device including the casing that has the cavity and accept in the cavity and with the sound production unit that the casing is fixed, sound production unit is including the vibrating diaphragm that is used for the vibration sound production, sound production unit will the cavity is separated and is close to the preceding chamber of sound of leading of vibrating diaphragm and keeping away from the coupling back chamber of vibrating diaphragm, be equipped with on the casing with the preceding chamber intercommunication of sound of leading and the first phonate hole and the second phonate hole of mutual interval, first phonate hole will chamber and interior space intercommunication of car before the sound is led, the second phonate hole will chamber and exterior space intercommunication of car before the sound is led.
In some embodiments of the automobile, the sound generating unit is opposite to and spaced apart from the first sound outlet.
In some embodiments of car, the door includes the first side door that is close to car inner space and the second side door that is close to the outer space of car, the casing includes that one end is fixed in first side door, the other end are fixed in the first casing and the second casing of second side door, sound producing unit is fixed in first casing and with first casing encloses to establish and forms the coupling back chamber, the coupling back chamber with first side door with the equal interval setting of second side door.
In some embodiments of the car, first casing, the second casing, with sound generating unit encloses jointly and establishes formation leading sound front chamber, first sound outlet with second sound outlet all forms in the second casing, first side door with the part of second casing butt is equipped with the second through-hole that runs through on it, first sound outlet with second through-hole intercommunication, the second side door with the part of second casing butt is equipped with the third through-hole that runs through on it, the second sound outlet with the third through-hole intercommunication.
In some embodiments of the vehicle, the vehicle-mounted sound wave device further includes a first dust-proof portion and a second dust-proof portion having meshes, the first dust-proof portion is fixed to the first side door and covers the second through hole, and the second dust-proof portion is fixed to the second housing and covers the second sound outlet hole.
In some embodiments of car, the door includes the first side door that is close to the car inner space and is close to the second side door of car outer space, the casing includes that one end is fixed in first side door, the other end are fixed in the baffle of second side door, the casing includes be equipped with the first through-hole that runs through on the baffle, sound producing unit is fixed in the baffle covers first through-hole, the baffle sound producing unit with first side door with the second side door encloses and establishes the formation lead the sound front chamber, first sound outlet is located first side door, second sound outlet is located the second side door.
In some embodiments of the vehicle, the partition, the sound generating unit, and the first side door and the second side door enclose the rear coupling cavity.
In some embodiments of the vehicle, a fourth through hole corresponding to the second sound outlet is provided in the partition plate, and the fourth through hole is communicated with the second sound outlet.
In some embodiments of the vehicle, the vehicle-mounted sound wave device further includes a first dust-proof portion and a second dust-proof portion having meshes, the first dust-proof portion is fixed to the first side door and covers the first sound outlet, and the second dust-proof portion is fixed to the partition plate and covers the fourth through hole.
In some embodiments of the vehicle, the rear coupling cavity contains sound absorbing material therein.
The invention has the beneficial effects that:
above-mentioned car, through first sound hole with leading sound antetheca and car inner space intercommunication and through second sound hole with leading sound antetheca and car outer space intercommunication, make the sound of sound generating unit sound simulation sports car engine sound can be through leading sound antetheca, first sound hole and second sound hole propagate car inner space and car outer space, the sound that realizes a sound generating unit and send can propagate car inner space and car outer space simultaneously, the increase of the cost and the design complexity that installation sound generating unit caused on the outline of car outside has been avoided, the degree of difficulty of the driving experience of realizing simulation sports car engine sound has been reduced simultaneously.
[ description of the drawings ]
FIG. 1 is a schematic view of an outside door structure of an automobile according to an embodiment of the present invention;
FIG. 2 is a schematic view of the inside structure of the door shown in FIG. 1;
FIG. 3 is a sectional view taken along line A-A of FIG. 2;
FIG. 4 is an enlarged view of the portion B of FIG. 3;
FIG. 5 is an enlarged view of the portion C of FIG. 3;
FIG. 6 is a schematic view of the interior structure of the door shown in FIG. 1;
FIG. 7 is a schematic view of an outer side structure of a door according to another embodiment of the present invention;
FIG. 8 is a schematic view of the inside structure of the door shown in FIG. 7;
FIG. 9 is a sectional view taken along line D-D of FIG. 8;
FIG. 10 is an enlarged view of section E of FIG. 9;
FIG. 11 is an enlarged view of the portion F of FIG. 9;
FIG. 12 is a schematic view of the interior structure of the door shown in FIG. 7;
fig. 13 is a graph of the acoustic transfer function of the sound guiding front volume in an embodiment of the invention.
[ detailed description ] embodiments
The invention is further described with reference to the following figures and embodiments.
Referring to fig. 1 to 12 together, an embodiment of the present invention provides an automobile including a vehicle-mounted sound wave device. The vehicle-mounted sound wave device comprises a shell with a cavity and a sound production unit 100 which is contained in the cavity and fixed with the shell, wherein the sound production unit 100 comprises a vibrating diaphragm for vibrating and producing sound, and the sound production unit 100 divides the cavity into a sound guide front cavity 200 close to the vibrating diaphragm and a coupling rear cavity 300 far away from the vibrating diaphragm. Further, the housing is provided with a first sound outlet 210 and a second sound outlet 220 which are communicated with the sound guide front cavity 200 and are spaced from each other, so as to guide out the sound emitted by the sound emitting unit 100. Specifically, the first sound outlet hole 210 is used to communicate the sound guide front cavity 200 with the vehicle interior space, the sound emitted from the sound emitting unit 100 is transmitted from the first sound outlet hole 210 to the vehicle interior space through the sound guide front cavity 200, the second sound outlet hole 220 is used to communicate the sound guide front cavity 200 with the vehicle exterior space, and the sound emitted from the sound emitting unit 100 is transmitted from the second sound outlet hole 220 to the vehicle exterior space through the sound guide front cavity 200.
Further, the sound emitting unit 100 is used to emit a sound simulating the sound of a sports car engine. The sound can be propagated to the vehicle interior space and the vehicle exterior space through the sound guide front chamber 200 and the first sound outlet hole 210 and the second sound outlet hole 220, respectively. The sound that realizes that a sound generating unit 100 sends promptly can spread space and the outer space of car simultaneously, has avoided the increase of the cost that installation sound generating unit 100 caused on the outer profile of car and the design complexity, has reduced the degree of difficulty that the driving that realizes simulation sports car engine sound experienced simultaneously. It is understood that the number of the vehicle-mounted sound wave devices may be one, two or more. The plurality of vehicle-mounted sound wave devices can achieve the optimal sound wave effect by means of sound combination, that is, the sound units 100 emit the same/different sounds, and the optimal sound wave effect is achieved by means of the combination of the sounds. The sounds simulating the sports car engine sound may be emitted simultaneously by each of the sound emitting units 100, or the sounds emitted by each of the sound emitting units 100 may be combined to form a sound simulating the sports car engine sound.
Further, the rear coupling chamber 300 and the front sound guide chamber 200 may be enclosed by a separate housing that is not a structure of the vehicle door 20 itself. It is understood that in other embodiments, the rear coupling cavity 300 and the front sound guiding cavity 200 may be enclosed by the structure of the vehicle door 20 itself, for example, a cavity of the vehicle itself may be two adjacent cavities, which respectively form the rear coupling cavity 300 and the front sound guiding cavity 200, and the structure between the two cavities is capable of installing the sound generating unit 100. In addition, the cavity of the door 20 itself may be partitioned into the rear coupling cavity 300 and the front sound guide cavity 200 by a partition structure to which the sound emitting unit 100 can be attached.
Further, the sound guiding front cavity 200 has a certain frequency selectivity. The frequency selectivity is expressed by the transfer function g(s) of the sound guiding front cavity 200, as follows,
s＝j*2πf
ωb＝2πfb
wherein f is frequency; f. ofbIs the resonant frequency of the back cavity 300; f. ofcIs the resonant frequency of the sound guiding front cavity 200; csIs the equivalent compliance of the sound generating unit 100; cbIs the equivalent compliance, C, of the coupled back volume 300cIs the equivalent acoustic compliance of the acoustic front cavity 200, h is the coordination ratio, alpha1And alpha2Is the acoustic compliance ratio, j is the unit of an imaginary number, QbIs a quality factor of the coupled cavity 300, and the above units are all international units. With the above acoustic design, the frequency range of the entire sound guiding front cavity 200 can be controlled within a desired sound frequency range.
Further, the acoustic design is mainly achieved by controlling the volume V of the sound guiding front cavity 200cAnd a back cavity 300 volume VbImplemented, parameters relating to the transfer function G(s) of the sound-guiding front volume 200 and the volume V of the sound-guiding front volume 200cAnd a back cavity 300 volume VbThe relationship of (a) is derived from the electro-mechanical-acoustic class ratio of the acoustic principle, and the result is as follows:
wherein f issIs a sound emitting unit 100Testing the resonance frequency by using a baffle; csIs the equivalent compliance of the sound generating unit 100; a is the effective radiation radius of the diaphragm of the sound emitting unit 100; qsIs the figure of merit of the sound unit 100; the four parameters can be directly measured and obtained after the sound production unit 100 is selected, and further design is not needed; vcIs the sound guide front volume 200; vbIs the back cavity 300 volume; f. ofbIs the resonant frequency of the back cavity 300; f. ofcIs the resonant frequency of the sound guiding front cavity 200; cbIs the equivalent compliance, C, of the coupled back volume 300cIs the equivalent acoustic compliance of the acoustic front cavity 200; rho0Is the air density; c is the speed of sound in air. It can be seen that by properly designing the volumes of the acoustic front cavity 200 and the back coupling cavity 300, an acoustic structure with a transfer function meeting specific requirements can be designed. As shown in fig. 13, which is a transfer function graph of a typical design of a band-pass type sound-guiding front cavity 200, it can be seen that the structure of the sound-guiding front cavity 200 realizes a certain bandwidth limitation, so that only sound in a pass-band frequency range can be transmitted into the space inside and outside the vehicle through the structure of the sound-guiding front cavity 200. Since engine sounds of different manufacturers and vehicle models are different, the acoustic characteristics and the size of the sound guide front cavity 200 are not limited, and the sound guide front cavity is specifically designed according to actual design requirements.
Through the design, a user can experience the engine sound of the high-cylinder-number engine under the condition of driving the low-cylinder-number engine automobile, the experience feeling is increased, meanwhile, the fact that the sounding unit 100 is installed on the outer contour of the automobile is avoided, and then the design cost and the realization difficulty of the whole scheme are reduced.
Referring to fig. 1 to 6 together, in one embodiment, an automobile includes a door 20 having a housing space and an on-board sound wave device disposed in the door 20. The vehicle door 20 includes a first side door 22 adjacent to a vehicle interior space and a second side door 21 adjacent to a vehicle exterior space. Specifically, the housing includes a first housing 400 and a second housing 500 fixed at one end to the first side door 22 and at the other end to the second side door 21. The first case 400 and the second case 500 are separate structures from the vehicle door 20. Specifically, the sound generating unit 100 is fixed to the first housing 400 and encloses with the first housing 400 to form the rear coupling cavity 300, and the rear coupling cavity 300 is spaced apart from both the first side door 22 and the second side door 21. The first casing 400, the second casing 500, enclose with the sound generating unit 100 and establish formation sound guide front chamber 200 jointly, first sound outlet 210 and second sound outlet 220 all form in the second casing 500, the part of first side door 22 and second casing 500 butt is equipped with the second through-hole 23 that runs through on it, first sound outlet 210 and second through-hole 23 intercommunication, the part of second side door 21 and second casing 500 butt is equipped with the third through-hole 24 that runs through on it, second sound outlet 220 and third through-hole 24 intercommunication. The first case 400 and the second case 500 are separate structures from the vehicle door 20.
Further, the second case 500 includes a first sidewall 510, a second sidewall 520, and two third sidewalls 530 between the first sidewall 510 and the second sidewall 520, which are oppositely disposed in the thickness direction of the vehicle door 20. The first sidewall 510 includes a first straight plate 511 and a second straight plate 512 connected in sequence, the first straight plate 511 abuts against the first side door 22, a first sound outlet 210 is formed thereon, and the sound generating unit 100 is opposite to the first sound outlet 210 and disposed at an interval. The sound emitted from the sound emitting unit 100 is propagated from the second through hole 23 to the vehicle interior space through the sound guide front chamber 200 and the first sound outlet hole 210. Further, the vehicle-mounted sound wave device further includes a first dust prevention portion 600 having a mesh, and the first dust prevention portion 600 is used for preventing dust from entering the sound guide front cavity 200 through the first sound outlet hole 210. Further, the first dust-proof portion 600 is a mesh structure, and is fixed to the first side door 22 and covers the second through hole 23.
Further, the second sidewall 520 includes a first arc plate 521 and a second arc plate 522 which are connected in series. The second arc plate 522 abuts against the second side door 21, and the second sound outlet hole 220 is formed thereon. The sound emitted from the sound emitting unit 100 propagates to the space outside the vehicle from the third through hole 24 through the sound guide front chamber 200 and the second sound outlet hole 220, forming a sound wave around the outer vehicle body. Further, the vehicle-mounted sound wave device further includes a second dust prevention part 700 having a mesh, and the second dust prevention part 700 is used for preventing dust from entering the sound guide front cavity 200 through the second sound outlet hole 220. Further, the second dust-proof portion 700 is a mesh structure, and is fixed to the second side door 21 and covers the third through hole 24. Further, one end of the second straight plate 512, which is far away from the first straight plate 511, and one end of the second arc-shaped plate 522, which is far away from the first arc-shaped plate 521, are connected into a whole, the first sound outlet 210 and the second sound outlet 220 are arranged along the height direction of the automobile, and the first sound outlet 210 is located below the second sound outlet 220.
In addition, some decorative features, such as grid patterns, can be made to make the whole vehicle body, especially the second side door 21 at the third through hole 24, more sporty and more suitable for sports car style on one hand, and to prevent the formation of abrupt openings on the door 20 to shield and beautify the third through hole 24 on the other hand. Specifically, the door 20 is provided with grids 25 to form the third through holes 24, i.e., the third through holes 24 are formed in the gaps between the grids 25 to provide certain shielding and beautification to the third through holes 24.
Referring to fig. 7 to 12 together, in another embodiment, the automobile includes a door 20 having a housing space and an on-board sound wave device disposed in the door 20. The vehicle door 20 includes a first side door 22 adjacent to a vehicle interior space and a second side door 21 adjacent to a vehicle exterior space. The casing includes that one end is fixed in first side door 22, the other end is fixed in the baffle 30 of second side door 21, and the casing includes that it is equipped with the first through-hole 301 that runs through on the baffle 30, and sound generating unit 100 is fixed in baffle 30 and covers first through-hole 301, and baffle 30, sound generating unit 100 enclose with first side door 22 and second side door 21 and establish and form leading sound front chamber 200, and first side door 22 is located to first sound outlet 210, and second side door 21 is located to second sound outlet 220. The partition 30, the sound generating unit 100, and the first side door 22 and the second side door 21 are enclosed to form a rear coupling chamber 300.
Further, the second arc-shaped plate 304 abuts against the second side door 21, a fourth through hole 3041 corresponding to the second sound outlet hole 220 is formed in the second arc-shaped plate, and the fourth through hole 3041 is communicated with the second sound outlet hole 220. The sound emitted from the sound emitting unit 100 is transmitted to the space outside the vehicle through the second sound outlet hole 220 via the sound guide front cavity 200 and the fourth through hole 3041, and forms sound waves around the outer vehicle body. Further, the vehicle-mounted sound wave device further includes a second dust-proof portion 800 having a mesh, and the second dust-proof portion 800 is configured to prevent dust from entering the sound guide front cavity 200 through the fourth through hole 3041. Further, the second dust-proof portion 800 is a mesh structure, and is fixed to the partition plate 30 and covers the fourth through hole 3041. Further, the first sound outlet 210 and the second sound outlet 220 are disposed along the height direction of the vehicle, and the first sound outlet 210 is located below the second sound outlet 220.
In addition, some decorative features, such as grid-type patterns, can be made to make the whole vehicle body, especially the second side door 21 at the second sound outlet 220, more sporty and more sporty, and to prevent the formation of abrupt openings on the door 20, so as to shield and beautify the second sound outlet 220. Specifically, the door 20 is provided with grids 25 to form the second sound outlet holes 220, that is, the second sound outlet holes 220 are formed in the gaps between the grids 25 to shield and beautify the second sound outlet holes 220 to some extent.
In this embodiment, since the vibration of the sound generating unit 100 is directly transmitted to the vehicle door 20 to cause unnecessary shell vibration, it is necessary to add a part of the sound absorbing material 900 in the rear coupling cavity 300, and the sound absorbing material 900 is disposed on the vehicle door 20.
While the foregoing is directed to embodiments of the present invention, it will be understood by those skilled in the art that various changes may be made without departing from the spirit and scope of the invention.
Claims (10)
1. An automobile comprising a door having an accommodating space, characterized in that: the automobile also comprises a vehicle-mounted sound wave device arranged in the door, wherein the vehicle-mounted sound wave device comprises a shell with a cavity and a sound production unit which is accommodated in the cavity and fixed with the shell, the sound production unit comprises a vibrating diaphragm for vibrating and producing sound, and the sound production unit divides the cavity into a sound guide front cavity close to the vibrating diaphragm and a coupling rear cavity far away from the vibrating diaphragm;
the shell is provided with a first sound outlet hole and a second sound outlet hole which are communicated with the sound guide front cavity and are mutually spaced, or the car door comprises a first side door close to the space in the car and a second side door close to the space outside the car, and the first side door and the second side door are respectively provided with the first sound outlet hole and the second sound outlet hole which are communicated with the sound guide front cavity and are mutually spaced;
the first sound outlet hole communicates the sound guide front cavity with the space in the vehicle, and the second sound outlet hole communicates the sound guide front cavity with the space outside the vehicle.
2. The automobile of claim 1, wherein: the sound production unit is opposite to the first sound outlet hole and is arranged at intervals.
3. The automobile according to claim 1 or 2, characterized in that: work as be equipped with on the casing with sound conduction front chamber intercommunication and during first sound outlet hole and second sound outlet hole of mutual interval, the door is including the first side door that is close to car inner space and the second side door that is close to the outer space of car, the casing includes that one end is fixed in first side door, the other end are fixed in the first casing and the second casing of second side door, sound producing unit is fixed in first casing and with first casing encloses establishes and forms the coupling back chamber, the coupling back chamber with first side door with the equal interval of second side door sets up.
4. The automobile of claim 3, wherein: first casing the second casing, with sound producing unit encloses jointly and establishes formation sound guide front chamber, first sound outlet with second sound outlet all is formed at the second casing, first side door with the part of second casing butt is equipped with the second through-hole that runs through on it, first sound outlet with second through-hole intercommunication, the second side door with the part of second casing butt is equipped with the third through-hole that runs through on it, the second sound outlet with third through-hole intercommunication.
5. The automobile of claim 4, wherein: the vehicle-mounted sound wave device further comprises a first dustproof portion and a second dustproof portion, the first dustproof portion is provided with meshes, the first dustproof portion is fixed on the first side door and covers the second through hole, and the second dustproof portion is fixed on the second shell and covers the second sound outlet hole.
6. The automobile according to claim 1 or 2, characterized in that: the casing includes that one end is fixed in first side door, the other end are fixed in the baffle of second side door, the casing includes be equipped with on the baffle and run through first through-hole on it, sound producing unit is fixed in baffle and cover first through-hole, the baffle sound producing unit with first side door with second side door encloses establishes the formation leading sound front chamber.
7. The automobile of claim 6, wherein the partition, the sound generating unit, and the first and second side doors enclose the rear coupling cavity.
8. The automobile according to claim 6, wherein a fourth through hole corresponding to the second sound outlet hole is formed in the partition plate, and the fourth through hole is communicated with the second sound outlet hole.
9. The automobile of claim 8, wherein: the vehicle-mounted sound wave device further comprises a first dustproof portion and a second dustproof portion, the first dustproof portion is provided with meshes, the first dustproof portion is fixed on the first side door and covers the first sound outlet hole, and the second dustproof portion is fixed on the partition board and covers the fourth through hole.
10. The automobile of claim 1, wherein: and a sound absorption material is accommodated in the coupling rear cavity.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010641840.1A CN111923843B (en) | 2020-07-06 | 2020-07-06 | Automobile |
| PCT/CN2020/105087 WO2022007042A1 (en) | 2020-07-06 | 2020-07-28 | Automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010641840.1A CN111923843B (en) | 2020-07-06 | 2020-07-06 | Automobile |
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| Publication Number | Publication Date |
|---|---|
| CN111923843A CN111923843A (en) | 2020-11-13 |
| CN111923843B true CN111923843B (en) | 2021-12-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010641840.1A Active CN111923843B (en) | 2020-07-06 | 2020-07-06 | Automobile |
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| WO (1) | WO2022007042A1 (en) |
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Also Published As
| Publication number | Publication date |
|---|---|
| WO2022007042A1 (en) | 2022-01-13 |
| CN111923843A (en) | 2020-11-13 |
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