Portable handheld 3D scanner

Abstract

The present invention relates to the field of laser scanners, in particular to portable handheld three-dimensional scanners. In view of the problems in the prior art that the size of the three-dimensional scanner cannot be adjusted and the lens protection is lacking, the following scheme is proposed, which includes: a scanning unit, which includes a telescopic tube and two scanning components respectively installed at both ends of the telescopic tube, a driving component for adjusting its length is installed inside the telescopic tube, the scanning component includes a mounting plate and a fixing plate fixed in parallel on the telescopic tube, and a three-dimensional scanner connected between the mounting plate and the fixing plate by a rotating shaft, an adjusting gear is sleeved on the outer periphery of the rotating shaft, the mounting plate is fixed on the end of the telescopic tube, and the fixing plate is fixed on the outer periphery of the telescopic tube. The present invention can conveniently adjust the size of the three-dimensional scanner, and can also well protect the lens of the three-dimensional scanner when it is stored, so as to avoid bumping into the lens during carrying.

Description

Technical Field

[0001] The invention relates to the field of laser scanners, and in particular to a portable handheld three-dimensional scanner. Background Art

[0002] A 3D scanner is a scientific instrument used to detect and analyze the geometric structure and appearance data of real-world objects or environments. Currently, there are many types of 3D scanners, among which small handheld 3D scanners are more widely used and have more users.

[0003] Since the 3D scanner is a precision instrument, it is necessary to avoid being bumped during use, and attention should be paid to the impact of dust on the instrument. As a handheld scanner, it should be small in size, otherwise it will be inconvenient to carry. The handheld 3D scanners in the prior art have a fixed size and cannot be adjusted in size. They also lack a protective structure for the scanner, which can easily cause the lens to be bumped during carrying. For this reason, this solution proposes a portable handheld 3D scanner. Summary of the invention

[0004] The portable handheld three-dimensional scanner proposed by the present invention solves the problems of the three-dimensional scanner in the prior art that the size cannot be adjusted and the lens protection is lacking.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] Portable handheld 3D scanner, including:

[0007] The scanning part includes a telescopic tube and two scanning assemblies respectively mounted at both ends of the telescopic tube, wherein a driving assembly for adjusting the length of the telescopic tube is mounted inside the telescopic tube, and the scanning assembly includes a mounting plate and a fixing plate fixed in parallel on the telescopic tube, and a three-dimensional scanner rotatably connected between the mounting plate and the fixing plate through a rotating shaft, wherein an adjusting gear is sleeved on the outer circumference of the rotating shaft;

[0008] An adjusting mechanism, which is used to drive the rotating shaft to rotate when the telescopic tube is extended or retracted, the adjusting mechanism includes an adjusting rack installed on the mounting plate through a first elastic member and a connecting member installed inside the telescopic tube, the adjusting rack is meshed with the adjusting gear, a first mounting groove is provided on a side of the mounting plate close to the fixed plate, the first elastic member includes a first sleeve rod fixed in the first mounting groove, a first sliding sleeve movably sleeved on the outer periphery of the first sleeve rod, and a first spring for connecting the first sliding sleeve and the inner wall of the first mounting groove, the connecting member includes two rope wheels rotatably connected to the inside of the storage tube and the inside of the movable tube respectively and a pull rope wound around the two rope wheels, and two ends of the pull rope are respectively fixed to one end of the two adjusting racks;

[0009] The hand-held part comprises a grip installed on the outer periphery of the telescopic tube through a hinge and a transmission shaft installed on the inner side of the grip for driving the telescopic tube to rotate.

[0010] Through the above technical solution, not only can the size of the three-dimensional scanner be easily adjusted, but also the lens of the three-dimensional scanner can be well protected when the three-dimensional scanner is stored.

[0011] As a further improvement of the above scheme, the telescopic tube includes a storage tube and a movable tube movably mounted on the inner side of the storage tube, the mounting plates in the two scanning assemblies are respectively fixed to the end of the storage tube and the end of the movable tube, and the fixing plates in the two scanning assemblies are respectively fixed to the outer periphery of the movable tube and the outer periphery of the storage tube.

[0012] Through the above technical solution, the two scanning components are respectively installed on the storage tube and the movable tube, which is convenient for storage.

[0013] As a further improvement of the above-mentioned scheme, the driving assembly includes a screw rod arranged on the inner side of the storage tube and a lifting plate threadedly sleeved on the outer periphery of the screw rod, the lifting plate is fixed on the inner wall of the movable tube, a transmission motor for driving the screw rod to rotate is installed at the bottom of the inner side of the storage tube, and a connecting hole for the pull rope to pass through is opened on the lifting plate.

[0014] Through the above technical solution, the length of the telescopic tube is adjusted by rotating the screw.

[0015] As a further improvement of the above scheme, the hinged part includes an adjustment shaft rotatably connected to the outer periphery of the storage tube, the handle is a rectangular frame with an opening on one side, the short sides of the handle are rotatably connected to the two ends of the adjustment shaft respectively, one end of the transmission shaft is transmission-connected to the adjustment shaft, and the other end of the transmission shaft is rotatably connected to the inner wall of the long side of the handle.

[0016] Through the above technical solution, when holding the handle, the telescopic tube can be driven to rotate by driving the transmission shaft to rotate, thereby adjusting the scanning angle of the three-dimensional scanner.

[0017] As a further improvement of the above scheme, an adjustment component for driving the transmission shaft to rotate is installed on the inner side of the handle, and the adjustment component includes a movable plate installed on the inner wall of the long side of the handle through a second elastic member, a transmission rack fixed to the top of the movable plate, an adjustment plate hinged on the inner wall of the short side of the bottom of the handle, and a connecting rod hinged on the adjustment plate, the outer periphery of the transmission shaft is sleeved with a transmission gear meshing with the transmission rack, and the other end of the connecting rod is hinged to the outer wall of the movable plate.

[0018] Through the above technical solution, the movable plate can be driven to move by pressing the adjustment plate, thereby achieving the purpose of facilitating the rotation of the driving shaft.

[0019] As a further improvement of the above scheme, a second mounting groove is opened on the inner wall of the long side of the handle, and the second elastic member includes a second sleeve fixed in the second mounting groove, a second sleeve movably mounted on the outer periphery of the second sleeve rod, and a second spring for connecting the second sleeve and the inner wall of the bottom of the second mounting groove.

[0020] Through the above technical solution, when the pressure on the adjustment plate disappears or becomes smaller, the movable plate can automatically return to its original position.

[0021] As a further improvement of the above-mentioned scheme, two shielding members for shielding the lens of the three-dimensional scanner are installed on the outer periphery of the telescopic tube, and the shielding member includes an inflatable tube and a soft cushion installed at one end of the inflatable tube. The inflatable tubes in the two shielding members are respectively fixed to the outer periphery of the movable tube and the outer periphery of the fixed tube, and an air supply mechanism for inflating and deflating air into the two inflatable tubes is installed inside the telescopic tube.

[0022] Through the above technical solution, when the lens of the three-dimensional scanner is rotated to face the telescopic tube, the lens of the three-dimensional scanner can be covered by the soft pad, thereby further preventing the lens from being bumped during carrying.

[0023] As a further improvement of the above scheme, the gas delivery mechanism includes an air cylinder fixed on the inner wall of the movable tube, a piston plate arranged on the inner side of the air cylinder, and a piston column fixed on the bottom surface of the piston plate, one end of the piston column extends to the outside of the air cylinder and is rotatably connected to one end of the screw, and an air delivery pipe is installed on the outer periphery of the air cylinder, and the air delivery pipe is connected to the two inflation pipes through a pipeline.

[0024] Through the above technical solution, the air in the air cylinder is pressed into the inflation tube when the telescopic tube contracts, so that the inflation tube is extended, and the soft cushion can be pressed tightly against the lens of the 3D scanner, thereby forming a good protection for the lens.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] 1. Through the cooperation between the scanning part and the adjustment mechanism, not only can the length of the telescopic tube be adjusted conveniently, thereby reducing the volume of the 3D scanner, but also the 3D scanner can be rotated when the telescopic tube is shortened so that its lens faces the telescopic tube, thereby effectively protecting the lens. When the telescopic tube is extended, the lens can be automatically rotated outward, which is convenient for users.

[0027] 2. Through the cooperation between the handheld part and the adjustment component, the direction of the scanning part can be easily adjusted during use, so that the scanning angle of the 3D scanner can be changed without turning the arm, ensuring the stability of the lens.

[0028] 3. Through the cooperation between the inflation mechanism, the telescopic tube and the soft cushion, the entire 3D scanner can be stored and the soft cushion can be pressed on the lens of the 3D scanner to cover the lens, thereby further protecting the lens. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the structure when the present invention is used;

[0030] Figure 2 for Figure 1 A schematic diagram of the structure on the back of the device;

[0031] Figure 3 It is a schematic diagram of the structure of the present invention when it is folded;

[0032] Figure 4 for Figure 1 A cross-sectional view of the middle mounting plate;

[0033] Figure 5 is a cross-sectional view of the telescopic tube and the handle of the present invention;

[0034] Figure 6 It is a schematic diagram of the structure inside the telescopic tube;

[0035] Figure 7 It is a schematic diagram of the structure of the handheld part.

[0036] Description of main symbols:

[0037] 1. Storage tube; 2. Movable tube; 3. Mounting plate; 4. Fixed plate; 5. 3D scanner; 6. Adjusting gear; 7. Rotating shaft; 8. Adjusting rack; 9. Cushion; 10. Inflatable tube; 11. First sleeve; 12. Second sleeve; 13. Mounting box; 14. Adjusting shaft; 15. Mounting block; 16. Transmission shaft; 17. Transmission rack; 18. Transmission gear; 19. Movable plate; 20. Connecting rod; 21. Handle; 22. Adjusting plate; 23. Pull rope; 24. First set of rods; 25. First sliding sleeve; 26. First mounting groove; 27. Air pipe; 28. Pulley; 29. ​​Air cylinder; 30. Dial; 31. Pointer; 32. Piston column; 33. Lifting plate; 34. Screw; 35. Transmission motor; 36. Second sliding sleeve; 37. Second set of rods; 38. Second mounting groove. DETAILED DESCRIPTION

[0038] The present invention is further described below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form a new embodiment.

[0039] Example 1

[0040] Please combine Figure 1 - Figure 7 The portable handheld three-dimensional scanner of this embodiment includes:

[0041] The scanning part includes a telescopic tube and two scanning components respectively installed at both ends of the telescopic tube. A driving component for adjusting the length of the telescopic tube is installed inside the telescopic tube. The telescopic tube includes a storage tube 1 and a movable tube 2 movably sleeved on the inner side of the storage tube 1. One end of the movable tube 2 extends to the outside of the storage tube 1. The scanning component includes a mounting plate 3 and a fixing plate 4 fixed in parallel on the telescopic tube, and a three-dimensional scanner 5 rotatably connected between the mounting plate 3 and the fixing plate 4 through a rotating shaft 7. An adjusting gear 6 is sleeved on the outer periphery of the rotating shaft 7. The mounting plates 3 in the two scanning components are respectively fixed to the ends of the movable tube 2 and the end of the storage tube 1. The fixing plates 4 in the two scanning components are respectively fixed to the outer periphery of the movable tube 2 and the outer periphery of the storage tube 1. When the telescopic tube is contracted, the two scanning components can be driven to move closer to or farther from each other, thereby adjusting the size of the entire scanner volume.

[0042] The driving assembly includes a screw rod 34 arranged on the inner side of the storage tube 1 and a lifting plate 33 threadedly sleeved on the outer periphery of the screw rod 34. The lifting plate 33 is fixed on the inner wall of the movable tube 2 located at one end inside the storage tube 1. A transmission motor 35 for driving the screw rod 34 to rotate is installed at the bottom of the inner side of the storage tube 1. One end of the output shaft of the transmission motor 35 is fixedly connected to one end of the screw rod 34. A connecting hole for the pull rope 23 to pass through is provided on the top surface of the lifting plate 33. The transmission motor 35 drives the screw rod 34 to rotate. After the screw 34 rotates, it can drive the lifting plate 33 to rise and fall, thereby driving the movable tube 2 to extend and retract, and then adjusting the length of the telescopic tube for easy carrying.

[0043] A telescopic cylinder is installed between the fixed plates 4 of the two scanning assemblies. The telescopic cylinder includes a first sleeve 11 fixed on one of the fixed plates 4 and a second sleeve 12 movably sleeved on the outer periphery of the first sleeve 11. The other end of the second sleeve 12 is fixedly connected to the other fixed plate 4. The first sleeve 11 and the second sleeve 12 are both coaxially arranged with the rotating shaft 7. An installation box 13 is fixedly connected to one of the fixed plates 4. The installation box 13 is used to install electrical components such as batteries and processors. An operating button electrically connected to the transmission motor 35 is installed on the outside of the installation box 13 for starting and stopping the transmission motor 35 and controlling the forward and reverse rotation of the transmission motor 35. The telescopic cylinder is used to protect the wiring between the two three-dimensional scanners 5.

[0044] The adjusting mechanism includes an adjusting rack 8 installed on the mounting plate 3 through a first elastic member and a connecting member installed inside the telescopic tube for driving the adjusting rack 8 to move when the telescopic tube is extended or retracted. The adjusting rack 8 is meshed with the adjusting gear 6. A first mounting groove 26 is provided along the radial direction of the telescopic tube on one side of the mounting plate 3 close to the fixed plate 4. The first elastic member includes a first sleeve rod 24 fixed in the first mounting groove 26, a first sliding sleeve 25 movably sleeved on the outer periphery of the first sleeve rod 24, and a first spring for connecting the first sliding sleeve and the inner wall of the first mounting groove. The long sides of the first sliding sleeve 25 are respectively in contact with the long sides of the first mounting groove 26. The bottom of the first sliding sleeve 25 is in contact with the adjusting rack 8. The connection is fixed, and the connecting member includes two rope wheels 28 which are respectively rotatably connected to the inside of the storage tube 1 and the inside of the movable tube 2 through a connecting shaft, and a pull rope 23 which is wound around the two rope wheels 28. The two ends of the pull rope 23 are respectively fixed to one end of the two adjustment racks 8. The length of the pull rope 23 is constant. When the scanner is in the storage state, that is, when the telescopic tube is in the storage state, the pull rope 23 is in a loose state. When the telescopic tube is extended, the two scanning components move away from each other, so that the pull rope 23 is gradually tightened from the loose state. When the pull rope 23 is not tightened, the extension of the telescopic tube will not drive the adjustment rack 8 to move. When the pull rope 23 is tightened, as the telescopic tube continues to extend, the two The adjusting rack 8 is pulled toward the side close to the telescopic tube, and at this time, the three-dimensional scanner 5 is driven to rotate gradually during the movement of the adjusting rack 8 toward the side of the telescopic tube, so that the three-dimensional scanner 5 is gradually rotated to the outside toward the telescopic lens, until the telescopic tube is extended to the length when in use, and the first sliding sleeve 25 also abuts against the inner wall of the first mounting groove 26 on the side close to the telescopic tube, so that the adjusting rack 8 stops moving. At this time, the three-dimensional scanner 5 is also rotated 180 degrees, so that the lens is directed toward the outside of the scanning assembly, and in the process of adjusting the rack 8 approaching the side of the telescopic tube, the first spring is also gradually stretched. Conversely, after the telescopic tube contracts, the tension acting on the pull rope 23 As the pulling force decreases, the first spring gradually recovers its deformation and moves from the driving adjustment rack 8 to the side away from the telescopic tube. At this time, the movement of the adjustment rack 8 can drive the three-dimensional scanner 5 to rotate toward the side close to the telescopic tube until the length of the telescopic tube is shortened to a certain extent. The tension on the pull rope 23 disappears, the first spring returns to its original state, and the lens of the three-dimensional scanner 5 rotates to a position facing the telescopic tube. The three-dimensional scanner 5 will not rotate during the process of further shortening the telescopic tube, thereby achieving the purpose of adjusting the direction of the lens of the three-dimensional scanner 5 while changing the size of the scanner, ensuring that the lens of the three-dimensional scanner 5 can be well protected when the scanner is not in use.

[0045] The hand-held part includes a handle 21 installed on the outer periphery of the telescopic tube through a hinge and a transmission shaft 16 installed on the inner side of the handle 21 for driving the telescopic tube to rotate. The hinge includes two mounting blocks 15 fixed on the outer periphery of the storage tube 1 and an adjustment shaft 14 rotatably connected between the two mounting blocks 15. The adjustment shaft 14 is arranged along the axial direction of the storage tube 1. The handle 21 is a rectangular frame with an opening on one side. The short sides of the handle 21 are rotatably connected to the outer walls of the two mounting blocks 15 respectively. One end of the transmission shaft 16 is transmission-connected to the adjustment shaft 14, and one end of the transmission shaft 16 is rotatably connected to the inner wall of the long side of the handle 21. When using the three-dimensional scanner, you can hold the handle 21, and then you can hold the entire three-dimensional scanner in your hand. When in use, the storage tube 1 is rotated to adjust the scanning angle of the three-dimensional scanner 5.

[0046] The implementation principle of this embodiment is as follows: when the three-dimensional scanner is in the storage state, the telescopic tube is in the contracted state, at which time, most of the length of the movable tube 2 is stored inside the storage tube 1, the installation box 13 is abutted between the fixed plates 4 in the two scanning components, and the lenses of the three-dimensional scanners 5 in the two scanning components are also located inside the scanning components, facing the telescopic tube;

[0047] When in use, the transmission motor 35 is started to rotate forward, which can drive the movable tube 2 to move outside the storage tube 1, so that the telescopic tube is extended. When the pull rope 23 is straightened, as the telescopic tube continues to extend, the pull rope 23 is gradually pulled, so that the two adjustment racks 8 move to the side close to the telescopic tube at the same time, and then the two three-dimensional scanners 5 can be driven to rotate, so that the lenses of the three-dimensional scanners 5 gradually rotate outward, until the telescopic tube is extended to the working length, the first sliding sleeve 25 abuts against the inner wall of the first mounting groove 26 on one side close to the telescopic tube, and the transmission motor 35 also stops rotating. At this time, the two three-dimensional scanners 5 are rotated 180 degrees, and their lenses face the outside of the scanning assembly. Then, the handle 21 can be held to use the three-dimensional scanner;

[0048] After use, the three-dimensional scanner can be stored. At this time, the transmission motor 35 is started to reverse, thereby driving the movable tube 2 to move into the storage tube 1, and the length of the telescopic tube becomes smaller. At this time, the pulling force of the pull rope 23 on the adjustment rack 8 gradually decreases. Under the action of the first spring, the adjustment rack 8 moves to the side away from the telescopic tube, thereby driving the rotation shaft 7 to reverse. After the rotation shaft 7 reverses, it drives the three-dimensional scanner 5 to rotate inward. The first spring completely recovers its deformation. At this time, the lens of the three-dimensional scanner 5 in the two scanning components is completely rotated to the inside of the scanning component and is in a state facing the telescopic tube. Until the telescopic tube is completely shortened to the set storage state, the transmission motor 35 stops rotating, thereby reducing the volume of the entire scanner and making it more convenient to carry.

[0049] Example 2

[0050] Combination Figure 1 - Figure 2 and Figure 4 - Figure 6 The present embodiment is further improved on the basis of the embodiment 1 in that: two shielding members for shielding the lens of the three-dimensional scanner 5 are installed on the outer periphery of the telescopic tube, and the shielding members include an inflatable tube 10 and a cushion 9 installed at one end of the inflatable tube 10, and the inflatable tube 10 of one shielding member is fixed on the outer periphery of the movable tube 2, and the inflatable tube 10 of the other shielding member is fixed on the outer periphery of the storage tube 1, and an air supply mechanism for inflating the two inflatable tubes 10 is installed inside the telescopic tube, and the air supply mechanism includes an air cylinder fixed on the inner wall of the movable tube. 29. A piston plate is arranged on the inner side of the air cylinder 29, and a piston column 32 is fixed on the bottom surface of the piston plate. One end of the piston column extends to the outside of the air cylinder 29 and is rotatably connected to one end of a screw rod 34. An air supply pipe 27 is installed on the top of the outer periphery of the air cylinder 29, and the air supply pipe 27 is connected to the two inflation tubes 10 through a pipeline. The air supply pipe 27 is a hose. When the telescopic tube is contracted, the air in the air cylinder 29 is input into the two inflation tubes 10. When the contraction tube is extended, the air in the inflation tube 10 can be sucked into the interior of the air cylinder 29.

[0051] The implementation principle of this embodiment is as follows: when the screw rod 34 reverses to drive the telescopic tube to shrink, the movable tube 2 moves toward the inside of the storage tube 1, and the air cylinder 29 moves synchronously with the movable tube 2, so that the piston rod 32 moves toward the inside of the air cylinder 29, and then the air in the air cylinder 29 can be input into the two inflatable tubes 10 through the air delivery tube 27. After the inflatable tubes 10 are inflated, they gradually extend. Before the first spring recovers its deformation, the cushion 9 will not contact the lens of the three-dimensional scanner 5. Until the lens of the three-dimensional scanner 5 rotates to a position facing the telescopic tube, the inflatable tube 10 will continue to shrink in the telescopic tube. The two inflatable tubes 10 continue to extend during the process until the telescopic tube is completely contracted, and the cushions 9 at one end of the two inflatable tubes 10 are respectively pressed against the lenses of the two three-dimensional scanners 5, thereby covering the lenses of the three-dimensional scanner 5. Conversely, when the telescopic tube is extended, the piston column 32 is drawn out of the air cylinder 29, and the air in the two inflatable tubes 10 can be drawn back into the air cylinder 29, and the two inflatable tubes 10 will also be shortened, thereby separating the cushions 9 from the lenses of the three-dimensional scanner 5, until the pull rope 23 is tightened, and the three-dimensional scanner 5 can rotate outward during the continued extension of the telescopic tube.

[0052] Example 3

[0053] Combination Figure 1 - Figure 2 and Figure 4 - Figure 7The present embodiment is further improved on the basis of the embodiment 1-2 in that: an adjustment assembly for driving the transmission shaft 16 to rotate is installed on the inner side of the handle 21, and the adjustment assembly includes a movable plate 19 installed on the inner wall of the long side of the handle 21 through a second elastic member, a transmission rack 17 fixed to the top of the movable plate 19, an adjustment plate 22 hinged on the inner wall of the short side of the bottom of the handle 21, and a connecting rod 20 hinged on the outer wall of the adjustment plate 22 close to the movable plate 19. The outer periphery of the transmission shaft 16 is sleeved with a transmission gear 18 meshing with the transmission rack 17, and the other end of the connecting rod 20 is hinged to the outer wall of the movable plate 19. A second mounting groove 38 is provided on the inner wall of the long side of the handle 21 along its length direction, and the second elastic member includes a second sleeve rod 37 fixed in the second mounting groove 38, a second sleeve 36 movably sleeved on the outer periphery of the second sleeve rod 37, and a second spring for connecting the second sleeve 36 and the inner wall of the bottom of the second mounting groove 38. The long sides of the second sleeve 36 are respectively abutted against the inner walls of the long sides of the second mounting groove 38, one end of the second sleeve 36 is fixed to the movable plate 19, one end of the second spring is fixed to the inner wall of one side of the second mounting groove 38, and the other end of the second spring is fixed to the second sleeve 36.

[0054] The implementation principle of this embodiment is as follows: by holding the adjustment plate 22 and squeezing it toward the side of the long side close to the handle 21, the adjustment plate 22 will drive the movable plate 19 to descend through the connecting rod 20, and the second spring will be compressed synchronously. After the movable plate 19 moves downward, it drives the transmission rack 17 to move downward, and then drives the transmission gear 18 and the transmission shaft 16 to rotate forward, and the transmission shaft 16 drives the adjustment shaft 14 to rotate forward, so that the telescopic tube rotates to the right, and finally the lens of the three-dimensional scanner 5 rotates to the right; conversely, when the adjustment plate 22 is released, the second spring rebounds, and the lens of the three-dimensional scanner 5 rotates to the left accordingly, and finally the direction adjustment of the lens of the three-dimensional scanner 5 is completed without swinging the arm.

[0055] Example 4

[0056] Combination Figure 7 Based on embodiments 1-3, this embodiment is further improved in that an annular dial 30 is fixed to the top surface of the handle 21, and a pointer 31 matching the dial 30 is rotatably connected to the top surface of the handle 21 through a fixed shaft, and the bottom of the fixed shaft is fixedly connected to one end of the adjustment shaft 14.

[0057] The implementation principle of this embodiment is: the adjusting shaft 14 drives the pointer 31 to rotate simultaneously through the fixed shaft. After the pointer 31 rotates, the rotation angle of the adjusting shaft 14 can be clearly known according to its position on the dial 30, and then the angular direction of the scanning component can be known.

[0058] The above-mentioned embodiments are only preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. A portable handheld 3D scanner, characterized in that: include: The scanning part includes a telescopic tube and two scanning assemblies respectively mounted at both ends of the telescopic tube, wherein a driving assembly for adjusting the length of the telescopic tube is mounted inside the telescopic tube, and the scanning assembly includes a mounting plate and a fixing plate fixed in parallel on the telescopic tube, and a three-dimensional scanner rotatably connected between the mounting plate and the fixing plate through a rotating shaft, wherein an adjusting gear is sleeved on the outer circumference of the rotating shaft; An adjusting mechanism, which is used to drive the rotating shaft to rotate when the telescopic tube is extended or retracted, the adjusting mechanism includes an adjusting rack installed on the mounting plate through a first elastic member and a connecting member installed inside the telescopic tube, the adjusting rack is meshed with the adjusting gear, a first mounting groove is provided on a side of the mounting plate close to the fixed plate, the first elastic member includes a first sleeve rod fixed in the first mounting groove, a first sliding sleeve movably sleeved on the outer periphery of the first sleeve rod, and a first spring for connecting the first sliding sleeve and the inner wall of the first mounting groove, the connecting member includes two rope wheels rotatably connected to the inside of the storage tube and the inside of the movable tube respectively and a pull rope wound around the two rope wheels, and two ends of the pull rope are respectively fixed to one end of the two adjusting racks; A hand-held part, which has a grip mounted on the outer periphery of the telescopic tube through a hinge and a transmission shaft mounted on the inner side of the grip for driving the telescopic tube to rotate; The telescopic tube includes a receiving tube and a movable tube movably sleeved inside the receiving tube, the mounting plates in the two scanning assemblies are respectively fixed to the ends of the receiving tube and the ends of the movable tube, and the fixing plates in the two scanning assemblies are respectively fixed to the outer periphery of the movable tube and the outer periphery of the receiving tube; The driving assembly includes a screw rod arranged on the inner side of the storage tube and a lifting plate threadedly sleeved on the outer periphery of the screw rod, the lifting plate is fixed on the inner wall of the movable tube, a transmission motor for driving the screw rod to rotate is installed at the bottom of the inner side of the storage tube, and a connecting hole for the pull rope to pass through is opened on the lifting plate.

2. The portable handheld 3D scanner according to claim 1, characterized in that: The hinged part includes an adjusting shaft rotatably connected to the outer periphery of the storage tube, and the handle is a rectangular frame with an opening on one side. The short sides of the handle are rotatably connected to the two ends of the adjusting shaft respectively, one end of the transmission shaft is transmission-connected to the adjusting shaft, and the other end of the transmission shaft is rotatably connected to the inner wall of the long side of the handle.

3. The portable handheld 3D scanner according to claim 2, characterized in that: An adjustment component for driving the transmission shaft to rotate is installed on the inner side of the handle, and the adjustment component includes a movable plate installed on the inner wall of the long side of the handle through a second elastic member, a transmission rack fixed on the top of the movable plate, an adjustment plate hinged on the inner wall of the short side of the bottom of the handle, and a connecting rod hinged on the adjustment plate. The outer periphery of the transmission shaft is sleeved with a transmission gear meshing with the transmission rack, and the other end of the connecting rod is hinged to the outer wall of the movable plate.

4. The portable handheld 3D scanner according to claim 3, characterized in that: A second mounting groove is provided on the inner wall of the long side of the handle, and the second elastic member includes a second sleeve rod fixed in the second mounting groove, a second sliding sleeve movably sleeved on the outer periphery of the second sleeve rod, and a second spring for connecting the second sliding sleeve and the inner wall of the bottom of the second mounting groove.

5. The portable handheld 3D scanner according to claim 1, characterized in that: Two shielding members for shielding the lens of the three-dimensional scanner are installed on the outer periphery of the telescopic tube, and the shielding member includes an inflatable tube and a soft cushion installed at one end of the inflatable tube. The inflatable tubes in the two shielding members are respectively fixed to the outer periphery of the movable tube and the outer periphery of the fixed tube, and an air supply mechanism for inflating and deflating air into the two inflatable tubes is installed inside the telescopic tube.

6. The portable handheld 3D scanner according to claim 5, characterized in that: The gas delivery mechanism includes an air cylinder fixed on the inner wall of the movable tube, a piston plate arranged on the inner side of the air cylinder, and a piston column fixed on the bottom surface of the piston plate. One end of the piston column extends to the outside of the air cylinder and is rotatably connected to one end of a screw rod. An air delivery pipe is installed on the outer periphery of the air cylinder, and the air delivery pipe is connected to two inflation pipes through a pipeline.

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