CN210063109U - Ackerman-like steering mechanism - Google Patents
Ackerman-like steering mechanism Download PDFInfo
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- CN210063109U CN210063109U CN201920953065.6U CN201920953065U CN210063109U CN 210063109 U CN210063109 U CN 210063109U CN 201920953065 U CN201920953065 U CN 201920953065U CN 210063109 U CN210063109 U CN 210063109U
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Abstract
The utility model discloses an ackermann steering mechanism, which comprises a crank unit, a left connecting rod unit, a right connecting rod unit, a left steering unit and a right steering unit, wherein the crank unit is connected with a motor, the crank unit is driven by the motor to rotate, two ends of the left connecting rod unit are respectively connected with the crank unit and the left steering unit, two ends of the right connecting rod unit are respectively connected with the crank unit and the right steering unit, and the left steering unit and the right steering unit are connected through a fixing frame; when the vehicle body needs to turn, the motor drives the crank unit to rotate, the crank unit drives the left connecting rod unit and the right connecting rod unit to rotate, the left connecting rod unit and the right connecting rod unit respectively drive the wheels of the left steering unit and the right steering unit to turn, and finally the vehicle body turns. The utility model has the advantages of simple structure, space saving, convenient assembly and disassembly, adjustable length, reliability, low price and the like.
Description
Technical Field
The utility model belongs to the automobile parts field, concretely relates to imitative ackerman steering mechanism.
Background
The ackerman steering geometry is a geometry designed according to ackerman steering geometry, aiming at solving the problem that the circle centers of the paths of the inner and outer steering wheels are different when a vehicle turns, when the vehicle turns along a curve, the steering angle of the inner side wheel by utilizing the equal crank of the four connecting rods is about 2-4 degrees larger than that of the outer side wheel, so that the circle centers of the paths of the four wheels are approximately crossed with the instantaneous steering center on the extension line of the rear shaft, and the vehicle can smoothly turn.
The size of the four-bar linkage of the Ackerman steering mechanism is closely related to the distance between the steering shafts of the front wheels and the distance between the front axle and the rear axle. If a vehicle model with completely different vehicle body sizes is designed, the steering four-bar linkage mechanism needs to be customized again, the existing vehicle parts cannot be adopted, and if the existing vehicle steering mechanism is forcibly utilized to be assembled on a new vehicle body which does not conform to the original vehicle size, the wheel sideslip is difficult to avoid during steering.
SUMMERY OF THE UTILITY MODEL
Problem to prior art existence, the utility model aims to provide an imitative ackerman steering mechanism who saves space, easy dismounting, adjustable length.
In order to achieve the above object, the utility model relates to an imitative ackermann steering mechanism, including crank unit, left connecting rod unit, right connecting rod unit, left steering unit and right steering unit, wherein, crank unit is connected with the motor, crank unit rotates through motor drive, the both ends of left connecting rod unit are connected with crank unit, left steering unit respectively, the both ends of right connecting rod unit are connected with crank unit, right steering unit respectively, connect through the mount between left steering unit and the right steering unit; when the vehicle body needs to turn, the motor drives the crank unit to rotate, the crank unit drives the left connecting rod unit and the right connecting rod unit to rotate, the left connecting rod unit and the right connecting rod unit respectively drive the wheels of the left steering unit and the right steering unit to turn, and finally the vehicle body turns.
Further, the crank unit comprises a base, a thrust ball bearing, a crank and a fixing piece, slotted holes are formed in the centers of the base, the crank and the fixing piece, an output shaft of the motor penetrates out of the slotted holes, the base is fixedly connected with the motor shell, the base is connected with the crank through the thrust ball bearing, the thrust ball bearing is sleeved on the output shaft of the motor, the fixing piece is fixedly arranged above the output shaft, the fixing piece and the crank can be detachably and fixedly connected, the fixing piece enables the crank to rotate along with the output shaft of the motor, and the thrust ball bearing ensures that the base does not rotate along with the.
Further, the fixed part is connected with an output shaft of the motor through a flat key; the thrust ball bearing is a one-way thrust ball bearing; the crank is an eccentric crank, and the eccentric crank is detachably connected with the fixing piece through a screw.
Furthermore, the eccentric crank is axially positioned through a retaining ring, and the retaining ring is sleeved on the output shaft of the motor and is positioned between the output shaft and the fixing piece.
Further, the left connecting rod unit and the right connecting rod unit can be extended and retracted to adjust the length of the left connecting rod unit and the right connecting rod unit.
Further, the left connecting rod unit and the right connecting rod unit have the same structure and the same connection principle with other components; the left steering unit and the right steering unit have the same structure and the same connection principle with other components.
Further, the left connecting rod unit comprises a sleeve, a left-handed thread screw rod, a right-handed thread screw rod, a left T-shaped connecting piece and a right T-shaped connecting piece, wherein the left end of the left-handed thread screw rod is detachably connected with the left T-shaped connecting piece, the right end of the left-handed thread screw rod is sleeved in the sleeve, the left-handed thread screw rod is detachably connected with the sleeve, and the length sleeved in the sleeve is adjusted by rotating the left-handed thread screw rod; the right end of the right-handed thread screw rod is detachably connected with the right T-shaped connecting piece, the left end of the right-handed thread screw rod is sleeved in the sleeve, the right-handed thread screw rod is detachably connected with the sleeve, and the length of the sleeve is adjusted by rotating the right-handed thread screw rod; the left T-shaped connecting piece is detachably connected with the left steering unit, and the right T-shaped connecting piece is detachably connected with the crank unit.
Furthermore, the left connecting rod unit and the right connecting rod unit are detachably connected with the crank unit through a plug screw, and the plug screw downwards penetrates through the left T-shaped connecting piece of the right connecting rod unit and the right T-shaped connecting piece of the left connecting rod unit and is finally fixed on the eccentric crank.
Furthermore, the left steering unit comprises a V-shaped connecting piece, a rotating shaft, a wheel fixing frame and wheels, wherein the left end of the V-shaped connecting piece is detachably connected with the left T-shaped connecting piece of the left connecting rod unit through a plug screw, so that the V-shaped connecting piece is driven to rotate when the left connecting rod unit rotates; the axis of rotation includes locking cap and dwang, and dwang one end is connected with the locking cap, and the dwang of other end axis of rotation passes V type connecting piece right-hand member, mount left end, can dismantle fixed connection finally with the wheel mount, and the locking cap of axis of rotation is fixed at the right-hand member of V type connecting piece, and the wheel can be dismantled and set up in the wheel mount.
Furthermore, a gasket is arranged between the screw cap of the plug screw and the left T-shaped connecting piece of the right connecting rod unit, a shaft sleeve is arranged at the position where the right T-shaped connecting piece of the left connecting rod unit is contacted with the plug screw rod, and a shaft sleeve is arranged at the position where the left T-shaped connecting piece of the right connecting rod unit is contacted with the plug screw rod; a gasket is arranged between the screw cap of the plug screw and the V-shaped connecting piece, and a shaft sleeve is arranged at the contact position of the left T-shaped connecting piece of the left connecting rod unit and the plug screw rod; and a shaft sleeve is arranged at the contact position of the fixed frame and the screw rod of the rotating rod.
The utility model relates to an imitative ackerman turns to simplify steering mechanism has simple structure, saves space, easy dismounting, adjustable length, reliable advantage such as low price, and it drives the wheel through eccentric crank and turns, through the connecting rod structural design with adjustable length, makes it can be applicable to different motorcycle types, has realized the simplification of turning to the structure, saving of resource.
Drawings
Fig. 1 is a schematic structural view of the present invention;
fig. 2 is a side view of the present invention;
fig. 3 is a top view of the present invention;
FIG. 4 is a schematic view of the left turn state of the present invention;
fig. 5 is a schematic view of the right turn state of the present invention.
Detailed Description
The present invention now will be described more fully hereinafter with reference to the accompanying drawings, in which exemplary embodiments of the invention are shown. The present invention may, however, be embodied in many different forms and should not be construed as limited to the exemplary embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.
For ease of description, spatially relative terms, such as "upper," "lower," "left," "right," and the like, may be used herein to describe one element or feature's relationship to another element or feature as illustrated in the figures. It will be understood that the spatial terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" other elements or features would then be oriented "above" the other elements or features. Thus, the exemplary term "lower" can encompass both an upper and a lower orientation. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
As shown in fig. 1 to 5, the utility model relates to an imitative ackermann steering mechanism, including crank unit 1, left connecting rod unit 2, right connecting rod unit 3, left steering unit 4 and right steering unit 5, wherein, crank unit 1 is connected with motor 6, crank unit 1 is rotatory through motor 6 drive, the both ends of left connecting rod unit 2 are connected with crank unit 1, left steering unit 4 respectively, the both ends of right connecting rod unit 3 are connected with crank unit 1, right steering unit 5 respectively, be connected through mount 7 between left steering unit 4 and the right steering unit 5; when the vehicle body needs to turn, the motor 6 drives the crank unit 1 to rotate, the crank unit 1 drives the left connecting rod unit 2 and the right connecting rod unit 3 to rotate, the left connecting rod unit 2 and the right connecting rod unit 3 further drive wheels of the left steering unit 4 and the right steering unit 5 to turn respectively, and finally the vehicle body is turned.
The crank unit 1 comprises a base 11, a thrust ball bearing 12, a crank 13 and a fixing piece 14, wherein slotted holes are formed in the centers of the base 11, the crank 13 and the fixing piece 14, an output shaft 61 of the motor 6 penetrates out of the slotted holes, the base 11 is fixedly connected with a shell of the motor 6, the base 11 is connected with the crank 13 through the thrust ball bearing 12, the thrust ball bearing 12 is sleeved on the output shaft 61 of the motor 6, the fixing piece 14 is fixedly arranged above the output shaft 61, in the embodiment, the fixing piece 14 is connected with the output shaft 61 of the motor through a flat key, the fixing piece 14 is detachably and fixedly connected with the crank 13, the fixing piece 14 enables the crank 13 to rotate along with the output shaft 61 of the motor, and the thrust ball bearing 12 can ensure that the base does not rotate along with the rotation of the crank. In addition, in this embodiment, the crank 13 is an eccentric crank, and the eccentric crank is detachably connected to the fixing member through a screw, further, the eccentric crank is axially positioned through a retainer ring 15, and the retainer ring 15 is sleeved on the output shaft 61 and is located between the output shaft 61 and the fixing member 14.
Left side connecting rod unit 2, right connecting rod unit 3 can stretch out and draw back in order to adjust its length, make the utility model discloses a length of adjusting the connecting rod unit is applicable to the motorcycle type of different specifications, need not to change whole device that turns to.
The left link unit 2 and the right link unit 3 have the same structure and the similar connection relationship with other components, and the left steering unit 4 and the right steering unit 5 have the same structure and the similar connection relationship with other components, and the structures and the connection relationship with other components will be described by taking the left link unit 2 and the left steering unit 4 as examples, and the structures and the connection relationship with other components of the right link unit 3 and the right steering unit 5 will not be described again.
The left connecting rod unit 2 comprises a sleeve 21, a left-handed thread screw rod 22, a right-handed thread screw rod 23, a left T-shaped connecting piece 24 and a right T-shaped connecting piece 25, wherein a through hole parallel to the left T-shaped connecting piece 24 and the right T-shaped connecting piece 25 is formed in the L-shaped connecting piece and the right T-shaped connecting piece, the through hole is called as a parallel through hole, the left-handed thread screw rod 22 and the right-handed thread screw rod 23 can penetrate through the parallel through hole, and a through hole perpendicular to the L-shaped connecting piece is formed in the L-shaped connecting piece; the left end of the left-handed thread screw rod 22 penetrates through a parallel through hole of the left T-shaped connecting piece 24 and is detachably connected with the left T-shaped connecting piece 24 through a fastening screw, the right end of the left-handed thread screw rod 22 is embedded in the sleeve 21, the left-handed thread screw rod 22 is detachably connected with the sleeve 21 through the fastening screw, the right part of the left-handed thread screw rod 22 is sleeved in the sleeve 21, and the length of the part sleeved in the sleeve 21 is adjusted by rotating the left-handed thread screw rod; the right end of the right-handed thread screw rod 23 penetrates through a parallel through hole of the right T-shaped connecting piece 25 and is detachably connected with the right T-shaped connecting piece 25 through a fastening screw, the left end of the right-handed thread screw rod 23 is embedded in the sleeve 21, the right-handed thread screw rod 22 is detachably connected with the sleeve 21 through the fastening screw, part of the left side of the right-handed thread screw rod 23 is sleeved in the sleeve 21, and the length of the part sleeved in the sleeve 21 is adjusted by rotating the right-handed thread screw rod; the vertical through hole through the left T-shaped connecting piece is detachably connected with the left steering unit 4, and the vertical through hole through the right T-shaped connecting piece is detachably connected with the crank unit 1. The length of the sleeve 21 sleeved by the left-handed thread screw rod 22 and the right-handed thread screw rod 23 is adjusted by rotating the two screws, so that the total length of the left connecting rod unit 2 is adjusted.
The left connecting rod unit 2 and the right connecting rod unit 3 are detachably connected with the crank unit through a plug screw 8, specifically, the plug screw 8 downwards penetrates through a vertical through hole of a left T-shaped connecting piece of the right connecting rod unit 3 and a vertical through hole of a right T-shaped connecting piece of the left connecting rod unit 2 and is finally fixed on the eccentric crank, and thus, when the eccentric crank rotates along with the motor, the left connecting rod unit 2 and the right connecting rod unit 3 can be simultaneously driven to rotate. It can be seen from the above that the diameter of the screw of the plug screw 8 is smaller than the aperture of the through hole of the T-shaped connecting piece, and the diameter of the nut of the plug screw 8 is larger than the aperture of the through hole of the T-shaped connecting piece; the farther the position fixed by the screwing screw 8 is from the center of the circle of the eccentric crank, the larger the rotating range of the wheel is, and in practical application, the position fixed by the screwing screw 8 is far away from the center of the circle of the eccentric crank as far as possible.
The left steering unit 4 comprises a V-shaped connecting piece 41, a rotating shaft 42, a wheel fixing frame 43 and a wheel 44, wherein the V-shaped connecting piece 41 is provided with a V-shaped groove which is parallel to a V shape and is called as a V-shaped groove, two ends of the V shape of the V-shaped connecting piece 41 are provided with through holes which are vertical to the V shape and are respectively called as a left through hole and a right through hole, the inner surface of the left through hole is provided with threads, a left T-shaped connecting piece 24 of the left connecting rod unit is connected with the left end of the V-shaped connecting piece through a plugging screw 8, namely, the left T-shaped connecting piece 24 is plugged into the left end of the V-shaped groove, the vertical through hole of the left T-shaped connecting piece 24 is vertically aligned with the circle center of the left through hole, the plugging screw 8 downwards passes through the left through hole, the vertical through hole and the; the rotating shaft 42 comprises a fixing cap 421 and a rotating rod 422, one end of the rotating rod 422 is connected with the fixing cap, the other end of the rotating rod 422 is connected with the wheel fixing frame 43, the wheel 44 is detachably arranged in the wheel fixing frame 43, and in the embodiment, the wheel is connected with the wheel fixing frame through a tibia nut; through holes are formed in two ends of the fixing frame 7, the left end of the fixing frame 7 is arranged in the right end of the V-shaped groove of the left steering unit 4, the through hole of the left end of the fixing frame is vertically aligned with the center of the right through hole, the rotating rod 422 of the rotating shaft 42 penetrates through the right through hole of the V-shaped connecting piece 41, the through hole of the left end of the fixing frame and the right through hole of the left end of the fixing frame, and finally is fixedly connected with the wheel fixing frame 43, the fixing cap 421 of the rotating shaft 42 is fixed on the upper side of the left end of the V-shaped connecting piece 41, in the embodiment, the fixing cap 421 is fixed at the right end of the V-shaped connecting piece 41 through screws, so that when the left connecting rod unit 2 rotates, the rotating shaft. From the above, the screw diameter of the plug screw 8 is smaller than the left through hole aperture of the V-shaped connecting piece, the nut diameter of the plug screw 8 is larger than the left through hole aperture of the V-shaped connecting piece, the diameter of the rotating rod 422 is smaller than the right through hole aperture of the V-shaped connecting piece, and the diameter of the fixing cap 421 is larger than the right through hole aperture of the V-shaped connecting piece.
In order to reduce the abrasion among the right T-shaped connecting piece of the left connecting rod unit 2, the left T-shaped connecting piece of the right connecting rod unit 3, the eccentric crank 13 and the plug screw 8, a gasket is arranged between the screw cap of the plug screw and the left T-shaped connecting piece of the right connecting rod unit 3, and shaft sleeves are arranged in the vertical through hole of the right T-shaped connecting piece of the left connecting rod unit 2 and the vertical through hole of the left T-shaped connecting piece of the right connecting rod unit 3. In order to reduce the abrasion among the left T-shaped connecting piece of the left connecting rod unit 2, the V-shaped connecting piece of the left steering unit 4 and the tucking screw 8, a gasket is arranged between the screw cap of the tucking screw and the V-shaped connecting piece, and a shaft sleeve is arranged in a vertical through hole of the left T-shaped connecting piece of the left connecting rod unit 2. In addition, shaft sleeves are also arranged in the through holes at the two ends of the fixing frame 7, so that the abrasion between the two ends of the fixing frame 7 and the rotating rod is reduced.
The utility model relates to an imitative ackerman steering mechanism, its theory of operation is: when the wheel needs to rotate left, the motor 6 drives the eccentric crank of the crank unit 1 to rotate anticlockwise, the eccentric crank drives the left connecting rod unit 2 to move towards the left side, the right connecting rod unit 3 to move towards the left side, further, the left connecting rod unit 2 pushes the left steering unit 4 to rotate anticlockwise, the right connecting rod unit 3 pulls the right steering unit 5 to synchronously rotate anticlockwise, the anticlockwise rotation of the rotating shaft is realized, and finally the wheel is driven to rotate left; when the wheel needs to turn right, motor 6 drives the eccentric crank clockwise rotation of crank unit 1, and eccentric crank drives right connecting rod unit 3 and moves towards the right side, and left connecting rod unit 2 moves towards the right side, and further, right connecting rod unit 3 promotes the synchronous clockwise rotation of right turn unit 5, and left connecting rod unit 2 pulling left turn unit 4 clockwise rotates, realizes the clockwise rotation of axis of rotation, finally drives the wheel and turns right.
The utility model relates to an imitative ackerman turns to simplify steering mechanism has simple structure, saves space, easy dismounting, adjustable length, reliable advantage such as low price, and it drives the wheel through eccentric crank and turns, through the connecting rod structural design with adjustable length, makes it can be applicable to different motorcycle types, has realized the simplification of turning to the structure, saving of resource.
Claims (10)
1. An ackermann-imitated steering mechanism is characterized by comprising a crank unit, a left connecting rod unit, a right connecting rod unit, a left steering unit and a right steering unit, wherein the crank unit is connected with a motor and is driven by the motor to rotate; when the vehicle body needs to turn, the motor drives the crank unit to rotate, the crank unit drives the left connecting rod unit and the right connecting rod unit to rotate, the left connecting rod unit and the right connecting rod unit respectively drive the wheels of the left steering unit and the right steering unit to turn, and finally the vehicle body turns.
2. The ackermann-like steering mechanism according to claim 1, wherein the crank unit includes a base, a thrust ball bearing, a crank and a fixing member, the base, the crank and the fixing member have slots at the centers thereof, the output shaft of the motor penetrates out of the slots, the base is fixedly connected with the motor housing, the base is connected with the crank through the thrust ball bearing, the thrust ball bearing is sleeved on the output shaft of the motor, the fixing member is fixedly arranged above the output shaft, the fixing member is detachably and fixedly connected with the crank, the fixing member enables the crank to rotate along with the output shaft of the motor, and the thrust ball bearing ensures that the base does not rotate along with the rotation of the crank.
3. The ackermann-like steering mechanism according to claim 2, wherein the fixed member is connected to the output shaft of the motor by a flat key; the thrust ball bearing is a one-way thrust ball bearing; the crank is an eccentric crank, and the eccentric crank is detachably connected with the fixing piece through a screw.
4. An ackermann-like steering mechanism according to claim 3, wherein the eccentric crank is axially positioned by a retaining ring, which is sleeved on the motor output shaft and is located between the output shaft and the fixed member.
5. An ackermann-like steering mechanism according to claim 1, wherein the left and right link units are telescopically adjustable to adjust their lengths.
6. An ackermann-like steering mechanism according to claim 1, wherein the left link unit and the right link unit have the same structure and the same connection principle with other components; the left steering unit and the right steering unit have the same structure and the same connection principle with other components.
7. The ackermann-like steering mechanism according to claim 3, wherein the left link unit comprises a sleeve, a left-handed threaded lead screw, a right-handed threaded lead screw, a left T-shaped connecting piece and a right T-shaped connecting piece, wherein the left end of the left-handed threaded lead screw is detachably connected with the left T-shaped connecting piece, the right end of the left-handed threaded lead screw is sleeved in the sleeve, the left-handed threaded lead screw is detachably connected with the sleeve, and the length of the sleeve is adjusted by rotating the left-handed threaded lead screw; the right end of the right-handed thread screw rod is detachably connected with the right T-shaped connecting piece, the left end of the right-handed thread screw rod is sleeved in the sleeve, the right-handed thread screw rod is detachably connected with the sleeve, and the length of the sleeve is adjusted by rotating the right-handed thread screw rod; the left T-shaped connecting piece is detachably connected with the left steering unit, and the right T-shaped connecting piece is detachably connected with the crank unit.
8. An ackermann-like steering mechanism according to claim 7, wherein the left link unit and the right link unit are detachably connected to the crank unit by means of setscrew, which is passed down through the left T-shaped connecting member of the right link unit and the right T-shaped connecting member of the left link unit and finally fixed to the eccentric crank.
9. The ackermann-like steering mechanism according to claim 8, wherein the left steering unit comprises a V-shaped connecting piece, a rotating shaft, a wheel fixing frame and a wheel, wherein the left end of the V-shaped connecting piece is detachably connected with the left T-shaped connecting piece of the left connecting rod unit through a tucking screw, so that the V-shaped connecting piece is driven to rotate when the left connecting rod unit rotates; the axis of rotation includes locking cap and dwang, and dwang one end is connected with the locking cap, and the dwang of other end axis of rotation passes V type connecting piece right-hand member, mount left end, can dismantle fixed connection finally with the wheel mount, and the locking cap of axis of rotation is fixed at the right-hand member of V type connecting piece, and the wheel can be dismantled and set up in the wheel mount.
10. The ackermann-like steering mechanism according to claim 9, wherein a spacer is provided between the screw cap of the tucking screw and the left T-shaped connecting piece of the right link unit, a bushing is provided at a position where the right T-shaped connecting piece of the left link unit contacts the tucking screw rod, and a bushing is provided at a position where the left T-shaped connecting piece of the right link unit contacts the tucking screw rod; a gasket is arranged between the screw cap of the plug screw and the V-shaped connecting piece, and a shaft sleeve is arranged at the contact position of the left T-shaped connecting piece of the left connecting rod unit and the plug screw rod; and a shaft sleeve is arranged at the contact position of the fixed frame and the screw rod of the rotating rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920953065.6U CN210063109U (en) | 2019-06-24 | 2019-06-24 | Ackerman-like steering mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920953065.6U CN210063109U (en) | 2019-06-24 | 2019-06-24 | Ackerman-like steering mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210063109U true CN210063109U (en) | 2020-02-14 |
Family
ID=69428474
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920953065.6U Active CN210063109U (en) | 2019-06-24 | 2019-06-24 | Ackerman-like steering mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210063109U (en) |
-
2019
- 2019-06-24 CN CN201920953065.6U patent/CN210063109U/en active Active
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| CP03 | Change of name, title or address |
Address after: 518063 202, floor 2, north science and technology innovation building, Gaoxin South Jiudao, Yuehai street, Nanshan District, Shenzhen, Guangdong Patentee after: Shenzhen Benhua Technology Co.,Ltd. Address before: 518055 room 402, West, building 2, private enterprise science park, Pingshan 1st Road, Nanshan District, Shenzhen, Guangdong Patentee before: Shenzhen Lingzhong Datong Intelligent Technology Co.,Ltd. |
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