CN219738335U - Novel simulated racing car sequence file - Google Patents
Novel simulated racing car sequence file Download PDFInfo
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- CN219738335U CN219738335U CN202320154571.5U CN202320154571U CN219738335U CN 219738335 U CN219738335 U CN 219738335U CN 202320154571 U CN202320154571 U CN 202320154571U CN 219738335 U CN219738335 U CN 219738335U
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- 229910000831 Steel Inorganic materials 0.000 claims abstract description 52
- 239000010959 steel Substances 0.000 claims abstract description 52
- 238000004088 simulation Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012549 training Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
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Abstract
The utility model discloses a novel simulated racing car sequence gear which comprises a main body, a handle part, a handle resetting part, a cam part, a steel ball positioning part and a control board, wherein the main body is provided with a plurality of control boards; the handle resetting component, the cam component, the steel ball positioning component and the control board are all arranged in the main body, one end of the handle component is arranged in the main body, and the other end of the handle component penetrates through the main body and is arranged outside the main body; the handle part is respectively contacted with the handle resetting part and the cam part, and the cam part is contacted with the steel ball positioning part; the handle component is electrically connected with the control board; the handle part swings left and right to form interlocking mechanical linkage, when the magnet and the Hall sensor reach a certain distance, an electric signal is recognized, and at the moment, the control board can give the signal to software through the USB interface to trigger a corresponding instruction; the digital tube can acquire the gear of the game through software and return signals to be synchronously displayed on the digital tube.
Description
Technical Field
The utility model relates to the technical field of simulated racing vehicles, in particular to a novel simulated racing vehicle sequence file.
Background
At present, with the development of automobile technology and the progress of society, automobiles start to enter China families, and the trend of rapid growth is that the traditional method for training drivers is to train on a real automobile, so that time and labor are wasted, and the operation level of the drivers directly influences traffic safety.
In recent years, simulation training of a driver by using an automobile driving simulator is becoming more and more important. Among existing simulators, there are both simple driving simulators and driving simulators built using a real vehicle body. The driving simulator built by the real vehicle body has the environment of the real vehicle, and the simulation fidelity is far higher than that of a simple driving simulator. The gear simulator in the automobile driving simulation device in the prior art records the acquired signals by recording the travel of the gear lever and then transmits the recorded signals to the host machine for analog signal processing instead of actually engaging in gears. The stroke record of the gear lever generally adopts mechanical contact type, and the wear and collision in the use process, especially the mechanical collision of the signal acquisition contact, can generate the problems of poor contact and the like over time, and influence the service life of the gear simulator
Disclosure of Invention
The utility model aims to solve the defects in the prior art and provides a novel simulated racing car sequence file.
In order to achieve the above purpose, the present utility model adopts the following technical scheme:
a novel simulated racing car sequence gear comprises a main body, a handle part, a handle resetting part, a cam part, a steel ball positioning part and a control board; the handle resetting component, the cam component, the steel ball positioning component and the control board are all arranged in the main body, one end of the handle component is arranged in the main body, and the other end of the handle component penetrates through the main body and is arranged outside the main body; the handle part is respectively contacted with the handle resetting part and the cam part, and the cam part is contacted with the steel ball positioning part; the handle component is electrically connected with the control board.
Preferably, the handle part comprises a handle bracket, a shifting block module, a shifting piece and a gear gate; the shifting block module and the shifting piece are respectively connected with the handle bracket; the handle bracket is provided with a first groove, and the gear gate is arranged in the first groove; a gear contact is arranged in the first groove and is electrically connected with the control board; the gear gate is provided with a gear PCB which is abutted against the gear contact; the gear gate is connected with the bottom of the first groove through a first spring, and the gear gate is connected with the two inner walls of the first groove through screws respectively; the handle support is provided with a first through hole, two ends of the first through hole are respectively provided with a flange bearing, one side of each flange bearing is provided with a shaft sleeve, screws are arranged in the shaft sleeve, and the handle support is respectively connected with two side edges of the main body through the screws.
Preferably, the shifting block module comprises a shifting block fixing seat, a first shifting block, a second spring and a third spring, wherein the positions of the first shifting block, the second spring and the third spring are symmetrical, a second through hole and a third through hole, the positions of which correspond to each other, are arranged on the shifting block fixing seat, one end of the first shifting block is arranged in the second through hole, and the other end of the first shifting block is arranged outside the second through hole; the second spring is arranged in the second through hole and sleeved on the first shifting block, a first split washer is arranged in the second through hole, and one end of the first shifting block is limited in the second through hole by the first split washer; one end of the second shifting block is arranged in the third through hole, and the other end of the second shifting block is arranged outside the third through hole; the third spring is arranged in the third through hole and sleeved on the second shifting block, a second split washer is arranged in the third through hole, and one end of the second shifting block is limited in the third through hole by the second split washer; the shifting block fixing seat is provided with a cover plate, and the cover plate covers one end of the second through hole and one end of the third through hole.
Preferably, the handle resetting component comprises a resetting fixed seat, a tension spring, a first tension spring fixing plate and a second tension spring fixing plate; the reset fixing seat is connected with the inner wall of the main body and is arranged at one side of the poking piece, and the first tension spring fixing plate and the second tension spring fixing plate are arranged on the reset fixing seat and are symmetrical in position; one end of the tension spring is connected with the first tension spring fixing plate, and the other end of the tension spring is connected with the second tension spring fixing plate; the reset fixing seat is provided with a limiting block, one end of the shifting piece is connected with the handle support, and the other end of the shifting piece is arranged between the first tension spring fixing plate and the second tension spring fixing plate and is positioned on one side of the limiting block.
Preferably, the cam component comprises a cam fixing seat, a cam and a bearing; the cam is arranged on the cam fixing seat, a fourth through hole is formed in the middle of the cam, and the bearing is arranged in the fourth through hole; a screw is arranged in the bearing, and one end of the screw is connected with the cam fixing seat; a plurality of convex angles with equal distances are circumferentially arranged on the cam, and a second groove is formed between two adjacent convex angles; each lobe is provided with a cylinder disposed between the first and second dials.
Preferably, the steel ball positioning component comprises a steel ball positioning seat, a cavity is arranged in the steel ball positioning seat, a fourth spring, a set screw and steel balls are arranged in the cavity, one end of the fourth spring is abutted against the set screw, and the other end of the fourth spring is abutted against the steel balls; the steel ball is abutted against the second groove, and the set screw is in threaded connection with the steel ball positioning seat; one end of the set screw is arranged outside the main body.
Preferably, the fixed base of the shifting block is also provided with magnets corresponding to the two positions.
Preferably, a tube of a Chinese character 'mi' is also arranged in the main body.
Preferably, the control board is provided with two corresponding Hall sensors at one side of the handle bracket.
Preferably, the main body is further provided with a USB interface.
Compared with the prior art, the utility model has the beneficial effects that:
the utility model designs a novel simulated racing car sequence gear, when a handle part swings left and right, a first pulling block and a second pulling block are mechanically linked with a cam, a steel ball positioning part is attached to the cam to form a fixed mode, and when the handle part swings left and right, the cam is pulled to rotate for one frame; the steel ball positioning component simultaneously limits the cam to only move one lattice every time the cam rotates; the steel balls are in contact with the cam, and when the set screw is adjusted, the pre-pressing force can be converted into resistance for the rotation of the cam, so that all the required force can be achieved when the handle part is adjusted to swing left and right; when the handle part is loosened, the tension spring drives the first tension spring fixing plate and the second tension spring fixing plate to bring the handle part back to the original position; the handle part swings left and right to form interlocking mechanical linkage, when the magnet and the Hall sensor reach a certain distance, an electric signal is recognized, and at the moment, the control board can give the signal to software through the USB interface to trigger a corresponding instruction; the digital tube can acquire the gear of the game through software and return signals to be synchronously displayed on the digital tube.
Drawings
FIG. 1 is a schematic diagram of a structure according to the present utility model;
FIG. 2 is a schematic view of the structure of the main body according to the present utility model;
FIG. 3 is a schematic view of the handle assembly according to the present utility model;
FIG. 4 is an exploded view of the handle assembly of the present utility model;
FIG. 5 is a schematic view of a handle reset device according to the present utility model;
FIG. 6 is a schematic view of a cam member according to the present utility model;
fig. 7 is an exploded view of the steel ball positioning member according to the present utility model;
fig. 8 is a schematic structural diagram of a control board according to the present utility model.
Legend description:
1. a main body, 2, a handle part, 3, a handle resetting part, 4, a cam part, 5 and a steel ball positioning part,
6. a control board, 11 meter-shaped digital tubes, 12 USB interfaces, 21 and a handle bracket,
22. a shifting block module 23, a shifting sheet 24, a gear gate 25, a first spring 31 and a reset fixing seat,
32. tension springs 33, a first tension spring fixing plate 34, a second tension spring fixing plate 41 and a cam fixing seat,
42. cam, 43, bearing, 44, screw, 51, steel ball fixing seat, 52, cavity,
53. fourth spring, 54, set screw, 55, steel ball, 61, hall sensor,
211. first grooves 212, gear contacts 213, first through holes 214, flange bearings,
215. a shaft sleeve 221, a shifting block fixing seat 222, a first shifting block 223 and a second shifting block,
224. a second spring 225, a third spring 241, a gear PCB board 311 and a limiting block,
421. lobe, 422, second groove, 423, cylinder, 2211, second through hole,
2212. a third through hole 2213, a first split ring 2214, a second split ring 2215, a cover plate,
2216. and (3) a magnet.
Description of the embodiments
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
In the description of the present utility model, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are based on directions or positional relationships shown in the drawings, are merely for convenience of description and simplification of description, and do not indicate or imply that the apparatus or element to be referred to must have a specific direction, be constructed and operated in the specific direction, and thus should not be construed as limiting the present utility model; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; furthermore, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
Referring to fig. 1 to 8, a novel simulated racing car sequence gear comprises a main body 1, a handle part 2, a handle resetting part 3, a cam part 4, a steel ball positioning part 5 and a control board 6; the handle resetting part 3, the cam part 4, the steel ball positioning part 5 and the control board 6 are all arranged in the main body 1, one end of the handle part 2 is arranged in the main body 1, and the other end of the handle part 2 passes through the main body 1 and is arranged outside the main body 1; the handle part 2 is respectively contacted with the handle resetting part 3 and the cam part 4, and the cam part 4 is contacted with the steel ball positioning part 5; the handle member 2 is electrically connected to the control board 6.
The handle part 2 comprises a handle bracket 21, a shifting block module 22, a shifting piece 23 and a gear gate 24; the shifting block module 22 and the shifting piece 23 are respectively connected with the handle bracket 21; the handle bracket 21 is provided with a first groove 211, and the gear gate 24 is arranged in the first groove 211; a gear contact 212 is arranged in the first groove 211, and the gear contact 212 is electrically connected with the control board 6; the gear gate 24 is provided with a gear PCB 241, and the gear PCB 241 is abutted against the gear contact 212; the gear gate 24 is connected with the bottom of the first groove 211 through a first spring 25, and the gear gate 24 is respectively connected with the two inner walls of the first groove 211 through screws; the handle bracket 21 is provided with a first through hole 213, two ends of the first through hole 213 are respectively provided with a flange bearing 214, one side of each flange bearing 214 is provided with a shaft sleeve 215, a screw is arranged in the shaft sleeve 215, and the handle bracket 21 is respectively connected with two side edges of the main body 1 through the screw; the gear contact 212 is connected with the control board through a wire 6, and when the gear gate 24 is pulled up, a signal is triggered, and at the moment, the control board 6 gives a corresponding instruction to software triggering through the USB interface 12.
The dial block module 22 comprises a dial block fixing seat 221, a first dial block 222, a second dial block 223, a second spring 224 and a third spring 225 which are symmetrical in position, wherein a second through hole 2211 and a third through hole 2212 which are corresponding in position are formed in the dial block fixing seat 221, one end of the first dial block 222 is arranged in the second through hole 2211, and the other end of the first dial block 222 is arranged outside the second through hole 2211; the second spring 224 is disposed in the second through hole 2211 and sleeved on the first dial block 222, a first opening check ring 2213 is disposed in the second through hole 2211, and the first opening check ring 2213 limits one end of the first dial block 222 to be located in the second through hole 2211; one end of the second shifting block 223 is arranged in the third through hole 2212, and the other end of the second shifting block 223 is arranged outside the third through hole 2212; the third spring 225 is disposed in the third through hole 2212 and sleeved on the second shifting block 223, a second split retaining ring 2214 is disposed in the third through hole 2212, and the second split retaining ring 2214 limits one end of the second shifting block 223 to be located in the third through hole 2212; the dial block fixing base 221 is provided with a cover plate 2215, and the cover plate 2215 covers one end of the second through hole 2211 and one end of the third through hole 2212.
The handle resetting part 3 comprises a resetting fixed seat 31, a tension spring 32, a first tension spring fixed plate 33 and a second tension spring fixed plate 34; the reset fixing seat 31 is connected with the inner wall of the main body 1 and is arranged on one side of the poking piece 23, and the first tension spring fixing plate 33 and the second tension spring fixing plate 34 are arranged on the reset fixing seat 31 and are symmetrical in position; one end of the tension spring 32 is connected with the first tension spring fixing plate 33, and the other end of the tension spring 32 is connected with the second tension spring fixing plate 34; a limiting block 311 is arranged on the reset fixing seat 31, one end of the pulling piece 23 is connected with the handle bracket 21, and the other end of the pulling piece 23 is arranged between the first tension spring fixing plate 33 and the second tension spring fixing plate 34 and is positioned at one side of the limiting block 311; the handle part 2 can mechanically link with the handle resetting part 3, the pulling piece 23 can link with the tension spring 32 fixing plate, when the handle part 2 is swung, the first tension spring fixing plate 33 and the second tension spring fixing plate 34 can be driven to move together, the tension spring 32 is hung between the first tension spring fixing plate 33 and the second tension spring fixing plate 34, and when the handle part 2 is loosened, the tension spring 32 can drive the first tension spring fixing plate 33 and the second tension spring fixing plate 34 to bring the handle part 2 back to the original position.
The cam member 4 includes a cam fixing seat 41, a cam 42, and a bearing 43; the cam 42 is arranged on the cam fixing seat 41, a fourth through hole is arranged in the middle of the cam 42, and the bearing 43 is arranged in the fourth through hole; a screw 44 is arranged in the bearing 43, and one end of the screw 44 is connected with the cam fixing seat 41; the cam 42 is circumferentially provided with a plurality of convex corners 421 with equal distances, and a second groove 422 is formed between two adjacent convex corners 421; each lobe 421 has a cylinder 423 disposed thereon, cylinder 423 being disposed between first dial 222 and second dial 223; the cam fixing seat 41 has the function of smoothly reducing friction when the cam 42 rotates; when the handle part 2 swings left and right, the first pulling block and the second pulling block are mechanically linked with the cam 42, the steel ball positioning part 5 is attached to the cam 42 to form a fixed mode, and when the handle part 2 swings left and right, the cam 42 is pulled to rotate for one frame; the steel ball positioning member 5 simultaneously restricts the cam 42 to move only one cell per rotation.
The steel ball positioning part 5 comprises a steel ball positioning seat 51, a cavity 52 is arranged in the steel ball positioning seat 51, a fourth spring 53, a set screw 54 and a steel ball 55 are arranged in the cavity 52, one end of the fourth spring 53 is abutted against the set screw 54, and the other end of the fourth spring 53 is abutted against the steel ball 55; the steel ball 55 is abutted against the second groove 422, and the set screw 54 is in threaded connection with the steel ball positioning seat 51; one end of the set screw 54 is disposed outside the main body 1; the steel balls 55 are arranged in the steel ball fixing seat 51, the fourth spring 53 is arranged in the steel ball fixing seat 51 to prop against the steel balls 55, the set screw 54 is arranged in the steel ball fixing seat 51 to prop against the fourth spring 53, and the force of the fourth spring 53 for pre-pressing the steel balls 55 can be adjusted by rotating the set screw 54; the steel ball 55 contacts with the cam 42, and when the set screw 54 is adjusted, the pre-pressing force is converted into resistance to the rotation of the cam 42, so that all the required force is achieved when the adjusting handle part 2 swings left and right.
The shifting block fixing seat 221 is also provided with two magnets 2216 corresponding to two positions, and one side of the control board 6, which is positioned on the handle bracket 21, is provided with two Hall sensors 61 corresponding to two positions; the main body 1 is also provided with a USB interface 12; the handle part 2 forms interlocking mechanical linkage when swinging leftwards and rightwards, and when the magnet 2216 is at a certain distance from the Hall sensor 61, an electric signal is recognized, and at the moment, the control board 6 can give the signal to software through the USB interface 12 to trigger a corresponding instruction; the main body 1 is also internally provided with a meter-word digital tube 11, and the meter-word digital tube 11 can acquire the gear of the game through software and return signals to be synchronously displayed on the meter-word digital tube 11.
The working principle of the utility model is as follows: when the handle part 2 swings left and right, the first pulling block and the second pulling block are mechanically linked with the cam 42, the steel ball positioning part 5 is attached to the cam 42 to form a fixed mode, and when the handle part 2 swings left and right, the cam 42 is pulled to rotate for one frame; the steel ball positioning part 5 simultaneously limits the cam 42 to only move one lattice every time of rotation; the steel balls 55 are in contact with the cam 42, and when the set screw 54 is adjusted, the pre-pressing force is converted into resistance to the rotation of the cam 42, so that all the required force is achieved when the adjusting handle part 2 swings left and right; when the handle part 2 is swung, the first tension spring fixing plate 33 and the second tension spring fixing plate 34 are driven to move together, a tension spring 32 is hung between the first tension spring fixing plate 33 and the second tension spring fixing plate 34, and when the handle part 2 is released, the tension spring 32 drives the first tension spring fixing plate 33 and the second tension spring fixing plate 34 to bring the handle part 2 back to the original position; the handle part 2 forms interlocking mechanical linkage when swinging leftwards and rightwards, and when the magnet 2216 is at a certain distance from the Hall sensor 61, an electric signal is recognized, and at the moment, the control board 6 can give the signal to software through the USB interface 12 to trigger a corresponding instruction; the meter-word digital tube 11 can acquire the gear of the game through software and return signals to be synchronously displayed on the meter-word digital tube 11.
The present utility model is not limited to the above-mentioned embodiments, and any person skilled in the art, based on the technical solution of the present utility model and the inventive concept thereof, can be replaced or changed within the scope of the present utility model.
Claims (10)
1. The novel simulated racing car sequence gear is characterized by comprising a main body, a handle part, a handle resetting part, a cam part, a steel ball positioning part and a control board; the handle resetting component, the cam component, the steel ball positioning component and the control board are all arranged in the main body, one end of the handle component is arranged in the main body, and the other end of the handle component penetrates through the main body and is arranged outside the main body; the handle part is respectively contacted with the handle resetting part and the cam part, and the cam part is contacted with the steel ball positioning part; the handle component is electrically connected with the control board.
2. The new simulated racing car sequence as claimed in claim 1, wherein said handle member comprises a handle bracket, a dial module, a dial and a gear gate; the shifting block module and the shifting piece are respectively connected with the handle bracket; the handle bracket is provided with a first groove, and the gear gate is arranged in the first groove; a gear contact is arranged in the first groove and is electrically connected with the control board; the gear gate is provided with a gear PCB which is abutted against the gear contact; the gear gate is connected with the bottom of the first groove through a first spring, and the gear gate is connected with the two inner walls of the first groove through screws respectively; the handle support is provided with a first through hole, two ends of the first through hole are respectively provided with a flange bearing, one side of each flange bearing is provided with a shaft sleeve, screws are arranged in the shaft sleeve, and the handle support is respectively connected with two side edges of the main body through the screws.
3. The novel simulated racing car sequence gear according to claim 2, wherein the shifting block module comprises a shifting block fixing seat, a first shifting block, a second spring and a third spring, wherein the positions of the first shifting block, the second spring and the third spring are symmetrical, a second through hole and a third through hole which correspond to each other are arranged on the shifting block fixing seat, one end of the first shifting block is arranged in the second through hole, and the other end of the first shifting block is arranged outside the second through hole; the second spring is arranged in the second through hole and sleeved on the first shifting block, a first split washer is arranged in the second through hole, and one end of the first shifting block is limited in the second through hole by the first split washer; one end of the second shifting block is arranged in the third through hole, and the other end of the second shifting block is arranged outside the third through hole; the third spring is arranged in the third through hole and sleeved on the second shifting block, a second split washer is arranged in the third through hole, and one end of the second shifting block is limited in the third through hole by the second split washer; the shifting block fixing seat is provided with a cover plate, and the cover plate covers one end of the second through hole and one end of the third through hole.
4. A new simulated racing car sequence gear as claimed in claim 3, said handle return means comprising a return fixing base, a tension spring, a first tension spring fixing plate and a second tension spring fixing plate; the reset fixing seat is connected with the inner wall of the main body and is arranged at one side of the poking piece, and the first tension spring fixing plate and the second tension spring fixing plate are arranged on the reset fixing seat and are symmetrical in position; one end of the tension spring is connected with the first tension spring fixing plate, and the other end of the tension spring is connected with the second tension spring fixing plate; the reset fixing seat is provided with a limiting block, one end of the shifting piece is connected with the handle support, and the other end of the shifting piece is arranged between the first tension spring fixing plate and the second tension spring fixing plate and is positioned on one side of the limiting block.
5. The new simulated racing sequence gear as claimed in claim 4, wherein said cam member comprises a cam mount, cam and bearing; the cam is arranged on the cam fixing seat, a fourth through hole is formed in the middle of the cam, and the bearing is arranged in the fourth through hole; a screw is arranged in the bearing, and one end of the screw is connected with the cam fixing seat; a plurality of convex angles with equal distances are circumferentially arranged on the cam, and a second groove is formed between two adjacent convex angles; each lobe is provided with a cylinder disposed between the first and second dials.
6. The novel simulated racing car sequence gear of claim 5, wherein said steel ball positioning component comprises a steel ball positioning seat, a cavity is arranged in said steel ball positioning seat, a fourth spring, a set screw and a steel ball are arranged in said cavity, one end of said fourth spring is in contact with said set screw, and the other end of said fourth spring is in contact with said steel ball; the steel ball is abutted against the second groove, and the set screw is in threaded connection with the steel ball positioning seat; one end of the set screw is arranged outside the main body.
7. A new simulated racing car sequence as claimed in claim 3, said derailleur mounting further having two magnets positioned in correspondence thereto.
8. The new simulated racing car sequence file as claimed in claim 1, wherein said main body further comprises a # -shaped nixie tube.
9. The novel simulated racing car sequence gear of claim 2, wherein said control board is provided with two corresponding hall sensors on one side of said handle support.
10. The new simulated racing sequence as claimed in claim 1, wherein said body further comprises a USB interface.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223207607 | 2022-12-01 | ||
| CN2022232076076 | 2022-12-01 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219738335U true CN219738335U (en) | 2023-09-22 |
Family
ID=88029861
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320154571.5U Active CN219738335U (en) | 2022-12-01 | 2023-02-08 | Novel simulated racing car sequence file |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219738335U (en) |
-
2023
- 2023-02-08 CN CN202320154571.5U patent/CN219738335U/en active Active
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