CN212637795U - Vehicle steel plate damping system and motor vehicle - Google Patents
Vehicle steel plate damping system and motor vehicle Download PDFInfo
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- CN212637795U CN212637795U CN202022150282.7U CN202022150282U CN212637795U CN 212637795 U CN212637795 U CN 212637795U CN 202022150282 U CN202022150282 U CN 202022150282U CN 212637795 U CN212637795 U CN 212637795U
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Abstract
The utility model relates to a motor vehicle shock attenuation technical field, concretely relates to vehicle steel sheet shock mitigation system and motor vehicle, including wheel support frame and leaf spring, this wheel support frame lower extreme is connected with the axletree, and leaf spring sets up in the wheel top, is bow-shaped, and kickup, leaf spring's bending line is located promptly the top of leaf spring both ends line. The two ends of the steel plate spring are connected with the vehicle body bottom plate or the vehicle bottom frame. The upper end of the wheel supporting frame is connected with the steel plate spring. The utility model provides a vehicle steel sheet shock mitigation system adopts the steel sheet spring of kickup, and on the wheel support frame snap-on was in steel sheet spring, steel sheet spring directly regarded as vehicle body bottom plate's partly, and occupation space is little, and the shock attenuation is effectual, and can furthest's reduction automobile body height, increase vehicle stability. The auxiliary tension spring is combined, the damping effect is further improved, and the whole damping performance can be conveniently adjusted.
Description
Technical Field
The utility model relates to a motor vehicle shock attenuation technical field, concretely relates to vehicle steel sheet shock mitigation system and motor vehicle.
Background
At present, the world faces the problems of energy shortage, atmospheric pollution, traffic jam, parking difficulty and the like. Energy shortage and automobile energy consumption have a direct relation; the air pollution has great relation with the emission of automobile exhaust, and destroys an ecological system and normal living and developing conditions of human beings; the traffic jam and the parking difficulty bring inconvenience to the citizens when going out.
In order to solve the problems, a mini-vehicle which is energy-saving, environment-friendly and small in floor area is needed. To reduce the occupied area, the length of the vehicle is shortened, the width of the vehicle is reduced, and the height of the vehicle is reduced. After the height is reduced, the vehicle has better stability. The self weight of the existing automobile is 1.2-1.3 tons, the length of the automobile is 3.8-4.3 meters, the width of the automobile is 1.6-1.8 meters, and the occupied area is about 6-8 square meters. If one person drives a vehicle for going out, most energy is consumed on the dead weight of the vehicle, and the exhaust emission is greatly increased. Traffic jam and parking difficulty are also related to the occupied area of the automobile.
The miniature vehicle is a vehicle whose length, width and height are reduced simultaneously. However, the suspension damping system on the existing vehicle occupies a large space, is not matched with the structure and the weight of a miniature vehicle, and is not suitable for the development of vehicle miniaturization.
In view of the above problems, the inventor of the present invention has finally obtained the present invention through long-term research and practice.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model provides a vehicle steel sheet shock mitigation system and motor vehicle, this vehicle steel sheet shock mitigation system's shock attenuation is effectual, with low costs, simple structure, occupation position is few, can increase the car inner space, can lighten the dead weight of car again.
The utility model discloses a technical scheme lie in:
on one hand, the vehicle steel plate damping system comprises a wheel supporting frame, a steel plate spring and a wheel shaft, wherein the lower end of the wheel supporting frame is connected with the wheel shaft;
the steel plate spring is arranged above the wheel, is arched and is bent upwards, namely the bending line of the steel plate spring is positioned above the connecting line of the two ends of the steel plate spring;
one end of the steel plate spring is connected with a vehicle body bottom plate or a vehicle bottom frame, and the other end of the steel plate spring is a free end;
the upper end of the wheel supporting frame is connected with the steel plate spring.
Further, still include supplementary extension spring, leaf spring's one end is direct and underbody or vehicle bottom frame fixed connection, the other end with supplementary extension spring fixed connection, supplementary extension spring and underbody or vehicle bottom frame fixed connection.
Further, the direction of the vehicle head is taken as the front, and the direction of the vehicle tail is taken as the rear;
the rear end of the steel plate spring above the front wheel is directly and fixedly connected with the vehicle body bottom plate or the vehicle bottom frame, and the front end of the steel plate spring is indirectly connected with the vehicle body bottom plate or the vehicle bottom frame through the auxiliary tension spring;
the front end of the steel plate spring above the rear wheel is directly fixedly connected with the vehicle body bottom plate or the vehicle bottom frame, and the rear end of the steel plate spring is indirectly connected to the vehicle body bottom plate or the vehicle bottom frame through the auxiliary tension spring.
Furthermore, the wheel support frame comprises a front wheel support frame and a rear wheel support frame, the lower end of the front wheel support frame is connected with the front wheel shaft, and the lower end of the rear wheel support frame is connected with the rear wheel shaft; the front wheel support frame is arranged in a backward inclining mode, and the rear wheel support frame is arranged in a forward inclining mode.
Furthermore, a turntable bearing is connected to the upper end of the wheel support frame, an inner ring of the turntable bearing is fixedly connected with the wheel support frame, and an outer ring of the turntable bearing is fixedly connected with the steel plate spring.
Furthermore, the thickness of one end of the steel plate spring, which is close to the middle part of the vehicle body, is the largest, and the thickness of the steel plate spring is gradually reduced by extending towards the other end.
Further, the width of one end, close to the middle of the vehicle body, of the steel plate spring is the largest, and the width of the steel plate spring is gradually narrowed towards the extension of the other end.
Further, one end of the steel plate spring, which is close to the middle of the vehicle body, is the lowest position of the steel plate spring.
Further, the vehicle is a two-wheeled motor vehicle, the body of the vehicle comprises a cabin for passengers, and the steel plate spring above the front wheels is positioned in the bottom plate area of the cabin for passengers.
In another aspect, a motor vehicle is provided that includes the steel plate damping system described above.
Compared with the prior art, the beneficial effects of the utility model reside in that:
the utility model provides a vehicle steel sheet shock mitigation system adopts the steel sheet spring of kickup, and on the wheel support frame snap-on was in steel sheet spring, steel sheet spring directly regarded as vehicle body bottom plate's partly, and occupation space is little, and the shock attenuation is effectual, and can furthest's reduction automobile body height, increase vehicle stability. The auxiliary tension spring is combined, the damping effect is further improved, and the whole damping performance can be conveniently adjusted.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 shows a side view of a motor vehicle according to an embodiment of the invention;
fig. 2 shows a rear view of a motor vehicle according to an embodiment of the invention;
FIG. 3 illustrates a schematic structural view of a vehicle steel plate damping system according to one embodiment of the present invention;
FIG. 4 illustrates a schematic structural view of a vehicle steel plate damping system according to another embodiment of the present invention;
fig. 5 shows a schematic view of a leaf spring for a two-wheeled motor vehicle according to an embodiment of the present invention;
FIG. 6 shows a top view of FIG. 5;
fig. 7 shows a schematic view of a leaf spring for a three-wheeled motor vehicle according to an embodiment of the invention;
fig. 8 shows a schematic view of a leaf spring for a four-wheel motor vehicle according to an embodiment of the invention.
Detailed Description
The above and further features and advantages of the present invention will be described in more detail below with reference to the accompanying drawings.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
As shown in fig. 1, 2, fig. 1 shows a side view of a motor vehicle according to an embodiment of the present invention, and fig. 2 shows a rear view of a motor vehicle according to an embodiment of the present invention. In this embodiment, the motor vehicle is a two-wheel van, the van body 500 includes a cabin, a liftable auxiliary support wheel 400 is disposed between the front wheel 100 and the rear wheel 200, and the auxiliary support wheel 400 is mounted on the underbody 300. When the speed is too low or the vehicle is parked, the auxiliary support wheels 400 are lowered to support the vehicle body.
The motor vehicle in the example is a mini-type vehicle, the mini-type vehicle is developed in the direction of simultaneously reducing the length, the width and the height of the vehicle, meanwhile, the space in a cabin of a driver and passengers is increased as much as possible, the dead weight of the vehicle is reduced, the height of the vehicle body is reduced to the maximum extent, and after the height is reduced, the pressure of positive wind and crosswind can be reduced, so that the vehicle is kept stable. The development requirement based on the miniature vehicle needs a damping system which is light in weight, simple in structure, small in occupied space and reliable in damping effect.
As shown in fig. 3, fig. 3 shows a schematic structural diagram of a vehicle steel plate damping system according to an embodiment of the present invention, in which the vehicle steel plate damping system includes a wheel support frame and a steel plate spring. The wheel support frame comprises a front wheel support frame 101 and a rear wheel support frame 201, and the steel plate spring comprises a front wheel steel plate spring 1 and a rear wheel steel plate spring 2. The lower end of the front wheel supporting frame 101 is connected with the shaft of the front wheel 100, the lower end of the rear wheel supporting frame 201 is connected with the shaft of the rear wheel 200, and the front wheel steel plate spring 1 is arranged above the front wheel 100, is arched and is bent upwards. The rear wheel leaf spring 2 is disposed above the rear wheel 200, and is arcuate and bent upward. The upper end of the front wheel supporting frame 101 is fixedly connected with the front wheel steel plate spring 1, and the upper end of the front wheel supporting frame 201 is fixedly connected with the rear wheel steel plate spring 2. The vibration from the wheel is transmitted to the steel plate spring through the wheel supporting frame, and the steel plate spring absorbs the vibration.
The rear end 11 of the front wheel leaf spring 1 is fixed to the vehicle body floor 300, the front end 12 is free, the front end 21 of the rear wheel leaf spring 2 is fixed to the vehicle body floor 300, and the rear end 22 is free. The leaf springs are directly included as part of the underbody 300, greatly simplifying the vehicle shock absorbing system structure. It can be understood that the steel plate damping system greatly reduces the height of the whole vehicle body bottom plate 300 from the ground, can reduce the pressure of positive wind and side wind, particularly for miniature vehicles, has light weight, and is particularly important for keeping the vehicle stable and reducing the height of the vehicle body. Moreover, the two-wheeled motor vehicle is in the bottom plate part in driver's cabin the place ahead, and the front wheel leaf spring 1 corresponds the part and forms the arch, and the both sides space of this arch corresponds driver's two legs positions, makes the utilization ratio maximize in driver's cabin, reaches the length of shortening the car, reduces the width of car, reduces the purpose of the height of car.
The lower end of the front wheel support frame 101 is connected with a front wheel shaft, and the lower end of the rear wheel support frame 202 is connected with a rear wheel shaft; the front wheel support 101 is inclined rearwardly and the rear wheel support 202 is inclined forwardly. When braking, the front wheel support frame 101 and the rear wheel support frame 202 decompose the braking force, and the stability of the vehicle is better through the elastic buffering of the steel plate spring.
The upper end of the wheel support frame is connected with a turntable bearing, specifically, the upper end of the front wheel support frame 101 is fixed with a first turntable bearing 102, the upper end of the rear wheel support frame 201 is fixed with a second turntable bearing 202, inner rings of the first turntable bearing 102 and the second turntable bearing 202 are respectively fixedly connected with the front wheel support frame 101 and the rear wheel support frame 201, and outer rings of the first turntable bearing 102 and the second turntable bearing 202 are respectively fixedly connected with the front wheel steel plate spring 1 and the rear wheel steel plate spring 2. The turntable bearing can simultaneously bear large comprehensive loads such as axial load, radial load, overturning moment and the like, can reliably realize the rotation of the wheel support frame while ensuring the firm connection of the wheel support frame and the steel plate spring, and is particularly suitable for a steering system of a miniature vehicle.
The leaf springs are at the end near the middle of the vehicle body, namely the rear end 11 of the front wheel support frame 101 and the front end 21 of the rear wheel leaf spring 2, have the largest thickness, and extend to the other end to become thinner gradually. The damping effect of the steel plate spring can be improved while the weight is reduced.
The leaf spring has the largest width at one end close to the middle of the vehicle body, namely the rear end 11 of the front wheel support frame 101 and the front end 21 of the rear wheel leaf spring 2, and gradually narrows in width towards the other end. The damping effect of the steel plate spring can be improved while the weight is reduced.
One end of the leaf spring near the middle of the vehicle body, namely the rear end 11 of the front wheel support frame 101 and the front end 21 of the rear wheel leaf spring 2, is the lowest position of the leaf spring. The height of the vehicle body is reduced to the maximum extent, and the vehicle is kept stable.
In another embodiment, as shown in fig. 4, fig. 4 shows a schematic structural diagram of a vehicle steel plate damping system according to the present embodiment, and in the present embodiment, the vehicle steel plate damping system includes a wheel support bracket, a steel plate spring and an auxiliary tension spring. The wheel support frame comprises a front wheel support frame 101 and a rear wheel support frame 201, the steel plate spring comprises a front wheel steel plate spring 1 and a rear wheel steel plate spring 2, and the auxiliary tension spring comprises a front auxiliary tension spring 3 and a rear auxiliary tension spring 4. The lower end of the front wheel supporting frame 101 is connected with the shaft of the front wheel 100, the lower end of the rear wheel supporting frame 201 is connected with the shaft of the rear wheel 200, and the front wheel steel plate spring 1 is arranged above the front wheel 100, is arched and is bent upwards. The rear wheel leaf spring 2 is disposed above the rear wheel 200, and is arcuate and bent upward. The upper end of the front wheel supporting frame 101 is fixedly connected with the front wheel steel plate spring 1, and the upper end of the front wheel supporting frame 201 is fixedly connected with the rear wheel steel plate spring 2.
The rear end 11 of the front wheel leaf spring 1 is fixed to the vehicle body floor 300, and the front end 21 of the rear wheel leaf spring 2 is fixed to the vehicle body floor 300. The front end 12 of the front wheel steel plate spring 1 is fixedly connected with one end of the front auxiliary tension spring 3, and the other end of the front auxiliary tension spring 3 is fixedly connected with the vehicle body bottom plate 300. The rear end 22 of the rear wheel steel plate spring 2 is fixedly connected with one end of a rear auxiliary tension spring 4, and the other end of the front auxiliary tension spring 4 is fixedly connected with a vehicle body bottom plate 300. The leaf springs are directly included as part of the underbody 300, greatly simplifying the vehicle shock absorbing system structure. It should be noted that the combination of the auxiliary tension spring and the leaf spring makes the damping effect better. After the vehicle runs for a long time, the steel plate spring is fatigued, the elasticity is reduced, the best damping effect of the damping system can be recovered by adjusting the tension of the auxiliary tension spring, the service life of the damping system is prolonged, and the maintenance is simple.
The lower end of the front wheel support frame 101 is connected with a front wheel shaft, and the lower end of the rear wheel support frame 202 is connected with a rear wheel shaft; the front wheel support 101 is inclined rearwardly and the rear wheel support 202 is inclined forwardly. The front wheel steel plate spring 1 is matched to be arranged in front of the front wheel support frame 101, the rear auxiliary tension spring 4 is arranged behind the rear wheel support frame 201, and when the automobile is braked, the front wheel support frame 101 decomposes backward force, and the front auxiliary tension spring 3 is pulled through the front wheel steel plate spring 1. Meanwhile, the rear wheel support frame 202, the rear wheel steel plate spring 2 and the rear auxiliary tension spring 4 also perform damping, and the whole damping system performs elastic buffering, so that the vehicle has the best stability.
The upper end of the wheel support frame is connected with a turntable bearing, specifically, the upper end of the front wheel support frame 101 is fixed with a first turntable bearing 102, the upper end of the rear wheel support frame 201 is fixed with a second turntable bearing 202, inner rings of the first turntable bearing 102 and the second turntable bearing 202 are respectively fixedly connected with the front wheel support frame 101 and the rear wheel support frame 201, and outer rings of the first turntable bearing 102 and the second turntable bearing 202 are respectively fixedly connected with the front wheel steel plate spring 1 and the rear wheel steel plate spring 2. The turntable bearing can simultaneously bear large comprehensive loads such as axial load, radial load, overturning moment and the like, can reliably realize the rotation of the wheel support frame while ensuring the firm connection of the wheel support frame and the steel plate spring, and is particularly suitable for a steering system of a miniature vehicle. The leaf springs are at the end near the middle of the vehicle body, namely the rear end 11 of the front wheel support frame 101 and the front end 21 of the rear wheel leaf spring 2, have the largest thickness, and extend to the other end to become thinner gradually. The damping effect of the steel plate spring can be improved while the weight is reduced. The leaf spring has the largest width at one end close to the middle of the vehicle body, namely the rear end 11 of the front wheel support frame 101 and the front end 21 of the rear wheel leaf spring 2, and gradually narrows in width towards the other end. The damping effect of the steel plate spring can be improved while the weight is reduced. One end of the leaf spring near the middle of the vehicle body, namely the rear end 11 of the front wheel support frame 101 and the front end 21 of the rear wheel leaf spring 2, is the lowest position of the leaf spring. The height of the vehicle body is reduced to the maximum extent, and the vehicle is kept stable.
It will be appreciated that leaf springs and/or extension springs may also be attached to the vehicle underbody frame, and the overall damping system is similar in principle to that described above.
As shown in fig. 5 and 6, in some examples, the front wheel leaf spring 1 and the rear wheel leaf spring 2 may be an integral structure, and a middle flat plate portion thereof is connected to a vehicle body floor or a vehicle bottom frame.
As shown in fig. 7 and 8, it can be understood that, in some embodiments, the steel plate damping system of the present invention may also be installed in a four-wheel motor vehicle or a three-wheel motor vehicle, and the front wheel steel plate spring 1 and the rear wheel steel plate spring 2 may be an integral structure. Of course, the front wheel support frame and the rear wheel support frame may be of a separate structure and are respectively connected with a front axle and a rear axle of the vehicle. And a front wheel steel plate spring 1 and a rear wheel steel plate spring 2 which correspond to each other are arranged above each wheel. The occupied space can be reduced, the structure is simplified, the height of the vehicle body can be reduced to the maximum extent, and the stability of the vehicle is improved.
The foregoing is merely a preferred embodiment of the invention, which is intended to be illustrative, not limiting. The utility model discloses in all can change to some extent structure and connected mode etc. of each part all be in the utility model discloses equal transform and the improvement of going on technical scheme's the basis all should not get rid of the utility model discloses an outside the protection scope.
Claims (10)
1. A vehicle steel plate damping system comprises a wheel support frame, wherein the lower end of the wheel support frame is connected with a wheel axle;
the steel plate spring is arranged above the wheel, is arched and is bent upwards, namely the bending line of the steel plate spring is positioned above the connecting line of the two ends of the steel plate spring;
one end of the steel plate spring is connected with a vehicle body bottom plate or a vehicle bottom frame, and the other end of the steel plate spring is a free end;
the upper end of the wheel supporting frame is connected with the steel plate spring.
2. The vehicle steel plate damping system of claim 1, further comprising an auxiliary tension spring, wherein one end of the steel plate spring is directly and fixedly connected with the underbody or the vehicle underbody frame, and the other end of the steel plate spring is fixedly connected with the auxiliary tension spring, and the auxiliary tension spring is fixedly connected with the underbody or the vehicle underbody frame.
3. A vehicle steel plate damping system as claimed in claim 2,
the direction of the vehicle head is taken as the front, and the direction of the vehicle tail is taken as the back;
the rear end of the steel plate spring above the front wheel is directly and fixedly connected with the vehicle body bottom plate or the vehicle bottom frame, and the front end of the steel plate spring is indirectly connected with the vehicle body bottom plate or the vehicle bottom frame through the auxiliary tension spring;
the front end of the steel plate spring above the rear wheel is directly fixedly connected with the vehicle body bottom plate or the vehicle bottom frame, and the rear end of the steel plate spring is indirectly connected to the vehicle body bottom plate or the vehicle bottom frame through the auxiliary tension spring.
4. The vehicle steel plate damping system of claim 3, wherein the wheel support bracket comprises a front wheel support bracket and a rear wheel support bracket, the front wheel support bracket being connected at a lower end to the front wheel axle and the rear wheel support bracket being connected at a lower end to the rear wheel axle; the front wheel support frame is arranged in a backward inclining mode, and the rear wheel support frame is arranged in a forward inclining mode.
5. The vehicle steel plate damping system of claim 1, wherein a turntable bearing is connected to the upper end of the wheel support bracket, an inner race of the turntable bearing is fixedly connected to the wheel support bracket, and an outer race of the turntable bearing is fixedly connected to the steel plate spring.
6. A vehicle leaf damper system as claimed in any one of claims 1 to 5, wherein the leaf spring is of the greatest thickness at one end adjacent the mid-section of the vehicle body and tapers to a lesser thickness extending towards the other end.
7. A vehicle leaf damper system according to any one of claims 1 to 5, wherein the leaf spring is of the greatest width at one end adjacent the mid-section of the vehicle body and tapers in width towards the other end.
8. A vehicular leaf damper system according to any one of claims 1 to 5, wherein the end of the leaf spring adjacent the mid-body portion is at the lowest position of the leaf spring.
9. A vehicle leaf damper system according to any one of claims 1 to 5, characterised in that the vehicle is a two-wheeled vehicle, the body including an occupant compartment, the leaf spring above the front wheels being located in the floor region of the occupant compartment.
10. A motor vehicle comprising a steel panel damping system according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022150282.7U CN212637795U (en) | 2020-09-27 | 2020-09-27 | Vehicle steel plate damping system and motor vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022150282.7U CN212637795U (en) | 2020-09-27 | 2020-09-27 | Vehicle steel plate damping system and motor vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212637795U true CN212637795U (en) | 2021-03-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022150282.7U Active CN212637795U (en) | 2020-09-27 | 2020-09-27 | Vehicle steel plate damping system and motor vehicle |
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|---|---|
| CN (1) | CN212637795U (en) |
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2020
- 2020-09-27 CN CN202022150282.7U patent/CN212637795U/en active Active
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Effective date of registration: 20221228 Address after: 100000 Room 106, 1st Floor, Building 1, Jiaolin Jiadao Workshop, Hepingli East Street, Dongcheng District, Beijing Patentee after: Beijing Fudong Technology Co.,Ltd. Address before: 100045 501, courtyard tower, No.13, Erqi Theater Road, Xicheng District, Beijing Patentee before: Li Zunfu |
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