Arm motion posture capturing device

Abstract

The utility model provides an arm motion posture capturing device which comprises a base and a motion sensor, the motion sensor is fixedly installed at the top of the base, a matching groove is formed in the base, a fastening mechanism is arranged in the matching groove, and the capturing device can be worn on an arm; the fastening mechanism comprises a shell fixedly connected to the inner wall of the matching groove, a bandage is arranged at the bottom of the base, and the two ends of the bandage penetrate into the shell and are fixedly connected with pulling blocks. The utility model relates to the technical field of arm motion posture capture. According to the arm movement posture capturing device, by arranging the fastening mechanism, the arm movement posture capturing device can be tightened through a bandage and attached to the lower surface of the arm of a user, meanwhile, air returns into an air bag through a conveying pipe, the air bag can be expanded and attached to the upper surface of the arm of the user, and the stability of the movement posture capturing device after installation can be effectively improved; and the falling phenomenon is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of arm motion posture capture, in particular to an arm motion posture capture device. Background Art

[0002] Motion capture is simply motion capture. The motion capture system is a high-tech device used to accurately measure the motion of moving objects in three-dimensional space. It is based on the principles of computer graphics and records the motion of moving objects (trackers) in the form of images through several video capture devices arranged in space. Then, a computer is used to process the image data to obtain the spatial coordinates of different objects (trackers) in different time units. From a technical point of view, the essence of motion capture is to measure, track, and record the motion trajectory of objects in three-dimensional space. Motion capture devices generally have motion sensors that provide position information of the moving object, which is then transmitted to the control end for analysis.

[0003] Publication number "CN115167665A" provides an arm motion tracking device and a motion capture method thereof, comprising a base and a tightening belt, wherein a rectangular movable hole is provided on one side of the outer wall of the top of the base, and a symmetrically arranged fixing block is fixedly connected to the inner wall on the opposite side of the rectangular movable hole, and two fixing blocks are rotatably connected to the same rotating rod on the outer wall on the opposite side, and the tightening belt is wound and connected to the outer wall of the rotating rod. The present invention can move the first positioning hole to the side of the appropriate second positioning hole according to the thickness of the arm, and has good applicability. When the first positioning hole is located on the side of the second positioning hole, the positioning rod is taken out of the base, and the threaded section is screwed into the first positioning hole through the action of the knob, and the threaded section is extended and screwed into the second positioning hole, so as to achieve the positioning effect of the tightening belt.

[0004] However, the above device still has the following problems during implementation:

[0005] When the motion posture capture device is used, it is necessary to wear the motion posture capture device on the arm. However, the existing motion posture capture device is not convenient to wear on the arms of different people, has low applicability, and is prone to fall off during the movement of the arm, thereby affecting the accuracy of the captured data. Utility Model Content

[0006] The purpose of the utility model is to provide an arm movement posture capturing device to solve the problems raised in the above background technology.

[0007] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0008] An arm motion posture capturing device comprises a base and a motion sensor, wherein the motion sensor is fixedly mounted on the top of the base, a matching groove is provided inside the base, a fastening mechanism is provided inside the matching groove, and the capturing device can be worn on the arm;

[0009] The fastening mechanism includes a shell fixedly connected to the inner wall of the matching groove, a strap is provided at the bottom of the base, both ends of the strap penetrate into the interior of the shell and are fixedly connected to a pulling block, one side of the pulling block is fixedly connected to two springs, one end of the spring is fixedly connected to the inner wall of the shell;

[0010] The adjusting mechanism can adjust the length of the strap so that the length of the strap can be adjusted according to the diameter of the arm.

[0011] Preferably, the fastening mechanism further comprises a transmission tube fixedly connected to the bottom of the shell, the bottom of the transmission tube is fixedly connected to an airbag, and the surface of the airbag is fixedly connected to the lower surface of the base.

[0012] By setting up a fastening mechanism, the strap can be pulled downward, and the strap will slide under the restriction of the guide roller, the exposed part of the strap will become longer, and at the same time the strap will drive the pulling block to slide in the shell, and the pulling block will drive the piston to move. At this time, the shell is under negative pressure, and the gas in the airbag will enter the shell through the transmission tube. At this time, the user puts his arm into the strap and loosens the strap. The elastic force generated by the spring will drive the pulling block to reset, and the pulling block will drive the strap to tighten and fit against the lower surface of the user's arm. At this time, the gas will return to the inside of the airbag through the transmission tube, and the airbag will expand and fit against the upper surface of the user's arm, which can effectively improve the stability of the motion posture capture device after installation and avoid falling off.

[0013] Preferably, the adjustment mechanism includes an adjustment block located at the bottom of the base, and two adjustment grooves for use with the straps are provided on the top of the adjustment block. Threaded rods are threadedly connected to both sides of the adjustment block, and one end of the threaded rod is fixedly connected to a twisting block, and the other end of the threaded rod passes through the interior of the adjustment groove and is provided with a first bearing. One end of the threaded rod is rotatably connected to a moving block through the first bearing, and one side of the moving block is fixedly connected to two pressing rods.

[0014] By setting up an adjustment mechanism, the twisting block can be rotated, and the twisting block can drive the threaded rod to rotate. The threaded rod will gradually move to the side close to the twisting block, and at the same time drive the first bearing and the moving block to move. The moving block will drive the pressing rod and the friction block to move, contact and restrict the strap, and then move the adjustment block on the strap. After reaching the appropriate position, the twisting block is rotated in the opposite direction. Contrary to the above steps, the pressing rod and the friction block will move to the side close to the strap to restrict the strap, thereby completing the adjustment of the strap length to make its length adapt to the thickness of the user's arm.

[0015] Preferably, sliding blocks are fixedly connected to both sides of the moving block, and the inner wall of the adjusting groove is provided with a sliding groove used in conjunction with the sliding block.

[0016] By setting the sliding block and the sliding groove, the moving track of the moving block and other structures can be limited. When the threaded rod rotates to drive the first bearing and the moving block to move, the moving block and other structures can only move along the track of the sliding block and the sliding groove.

[0017] Preferably, one end of the pressing rod is fixedly connected to a friction block, and the friction block is made of plastic.

[0018] By providing the friction block, the friction force when the pressing rod contacts the strap can be increased, thereby effectively limiting the positioning of the strap.

[0019] Preferably, the inner wall of the matching groove is provided with two guide rollers used in conjunction with the binding belt, and second bearings are provided on both sides of the guide rollers, which are rotatably connected to the inner wall of the matching groove through the second bearings.

[0020] The guide roller and the second bearing are provided to limit the pulling trajectory of the strap, so that the strap can only move along the limit of the guide roller and the second bearing during the pulling process. At the same time, the guide roller can also change the downward pulling force of the strap into a horizontal pulling force.

[0021] Preferably, a piston is fixedly connected to one side of the pulling block, and a surface of the piston is in close contact with an inner wall of the housing.

[0022] By arranging the piston, a closed cavity can be formed between the two pulling blocks. When the pulling block is driven by the strap to move, negative pressure is formed to draw the gas in the airbag into the shell.

[0023] Compared with the prior art, the beneficial effects of the utility model are:

[0024] 1. The utility model is provided with a fastening mechanism, which can pull the strap downward, the strap will slide under the restriction of the guide roller, the exposed part of the strap will become longer, and at the same time the strap will drive the pulling block to slide in the shell, and the pulling block will drive the piston to move. At this time, the shell is under negative pressure, and the gas in the airbag will enter the shell through the transmission tube. At this time, the user puts his arm into the strap and loosens the strap. The elastic force generated by the spring will drive the pulling block to reset, and the pulling block will drive the strap to tighten and fit with the lower surface of the user's arm. At this time, the gas will return to the inside of the airbag through the transmission tube, and the airbag will expand and fit with the upper surface of the user's arm, which can effectively improve the stability of the motion posture capture device after installation and avoid falling off.

[0025] 2. The utility model is provided with an adjustment mechanism, which can rotate the twisting block, and the twisting block drives the threaded rod to rotate, and the threaded rod will gradually move to the side close to the twisting block, and at the same time drive the first bearing and the moving block to move, and the moving block will drive the pressing rod and the friction block to move, contact and restrict the strap, and then move the position of the adjustment block on the strap. After reaching the appropriate position, the twisting block is rotated in the opposite direction, which is opposite to the above steps. The pressing rod and the friction block will move to the side close to the strap to restrict the strap, thereby completing the adjustment of the length of the strap to make its length adapt to the thickness of the user's arm. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the main structure of the utility model;

[0027] Figure 2 It is a schematic diagram of a cross-section of the main structure of the utility model;

[0028] Figure 3 For this utility model Figure 2 A partial enlarged view of the middle A;

[0029] Figure 4 It is a three-dimensional diagram of the binding strap of the utility model;

[0030] Figure 5 It is a three-dimensional diagram of the adjustment block of the utility model;

[0031] Figure 6 It is a three-dimensional diagram of the local structure of the adjustment mechanism of the utility model.

[0032] In the figure: 1. base; 2. motion sensor; 3. matching groove; 4. shell; 5. strap; 6. pulling block; 7. spring; 8. transmission tube; 9. airbag; 10. adjusting block; 11. adjusting groove; 12. threaded rod; 13. twisting block; 14. first bearing; 15. moving block; 16. pressing rod; 17. sliding block; 18. sliding groove; 19. friction block; 20. guide roller; 21. second bearing; 22. piston. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0034] See also Figure 1-Figure 6 , the utility model provides a technical solution:

[0035] Embodiment 1:

[0036] An arm motion posture capturing device comprises a base 1 and a motion sensor 2, wherein the motion sensor 2 is fixedly mounted on the top of the base 1, a matching groove 3 is provided inside the base 1, and a fastening mechanism is provided inside the matching groove 3, so that the capturing device can be worn on the arm;

[0037] One implementation of the first embodiment is as follows: the fastening mechanism includes a shell 4 fixedly connected to the inner wall of the matching groove 3, a strap 5 is provided at the bottom of the base 1, both ends of the strap 5 penetrate into the inside of the shell 4 and are fixedly connected to a pulling block 6, one side of the pulling block 6 is fixedly connected to two springs 7, one end of the spring 7 is fixedly connected to the inner wall of the shell 4;

[0038] The adjustment mechanism can adjust the length of the strap 5 so that the length of the strap 5 can be adjusted according to the diameter of the arm.

[0039] The fastening mechanism further includes a transmission tube 8 fixedly connected to the bottom of the shell 4 , an air bag 9 is fixedly connected to the bottom of the transmission tube 8 , and a surface of the air bag 9 is fixedly connected to the lower surface of the base 1 .

[0040] In this embodiment, it is considered that when the motion posture capture device is used, it is necessary to wear the motion posture capture device on the arm, but the existing motion posture capture device is not convenient to be worn on the arms of different people, and has low applicability. In addition, the arm is prone to fall off during activities, thereby affecting the accuracy of the captured data. Therefore, by setting a fastening mechanism, the strap 5 can be pulled downward, and the strap 5 will slide under the restriction of the guide roller 20, and the exposed part of the strap 5 will become longer. At the same time, the strap 5 will drive the pulling block 6 to slide in the shell 4, and the pulling block 6 will drive the piston 22 to move. At this time, the shell 4 is negative. When the pressure is applied, the gas in the airbag 9 will enter the shell 4 through the transmission tube 8. At this time, the user puts his arm into the strap 5 and loosens the strap 5. The elastic force generated by the spring 7 will drive the pulling block 6 to reset, and the pulling block 6 will drive the strap 5 to tighten and fit the lower surface of the user's arm. When the pulling block 6 is reset, it will drive the piston 22 to reset, squeeze the gas in the shell 4, and make the gas return to the airbag 9 through the transmission tube 8. The airbag 9 will expand and fit the upper surface of the user's arm. The lower surface of the arm is restricted by the strap 5, and the upper surface is restricted by the airbag 9, which can effectively improve the stability of the motion posture capture device after installation and avoid falling off.

[0041] The invention solves the problem that when a motion posture capture device is used, the motion posture capture device needs to be worn on the arm, but the existing motion posture capture device is not convenient to be worn on the arms of different people, has low applicability, and is easy to fall off during the activity of the arm, thereby affecting the accuracy of the captured data.

[0042] Preferably, the inner wall of the matching groove 3 is provided with two guide rollers 20 used in conjunction with the binding belt 5 , and second bearings 21 are provided on both sides of the guide rollers 20 , and the guide rollers 20 are rotatably connected to the inner wall of the matching groove 3 through the second bearings 21 .

[0043] In this embodiment, by providing a guide roller 20 and a second bearing 21, the pulling trajectory of the strap 5 can be restricted so that the strap 5 can only move along the restriction of the guide roller 20 and the second bearing 21 during the pulling process. At the same time, the guide roller 20 can also change the downward pulling force of the strap 5 into a horizontal pulling force.

[0044] Preferably, a piston 22 is fixedly connected to one side of the pulling block 6 , and a surface of the piston 22 is in close contact with an inner wall of the housing 4 .

[0045] In this embodiment, by providing a piston 22, a closed cavity can be formed between the two pulling blocks 6. When the strap 5 drives the pulling block (6) to move, negative pressure is formed, and the gas in the airbag 9 is sucked into the interior of the shell 4.

[0046] Embodiment 2:

[0047] On the basis of Example 1, the fastening mechanism in this embodiment can contact the arm through the strap 5 and the airbag 9 to facilitate wearing. However, considering the different thickness of the user's arm, the length of the strap 5 may not be suitable. The adjustment mechanism in this application includes an adjustment block 10 located at the bottom of the base 1, and two adjustment grooves 11 used in conjunction with the strap 5 are provided on the top of the adjustment block 10. Threaded rods 12 are threadedly connected on both sides of the adjustment block 10, and one end of the threaded rod 12 is fixedly connected to a twisting block 13, and the other end of the threaded rod 12 passes through the interior of the adjustment groove 11 and is provided with a first bearing 14. One end of the threaded rod 12 is rotatably connected to a moving block 15 through the first bearing 14, and one side of the moving block 15 is fixedly connected to two pressing rods 16.

[0048] In this embodiment, considering that the thickness of users' arms is different, the length of the strap 5 may not be suitable. Therefore, by setting an adjustment mechanism, the twisting block 13 can be rotated, and the twisting block 13 drives the threaded rod 12 to rotate, and the threaded rod 12 will gradually move to the side close to the twisting block 13, and at the same time drive the first bearing 14 and the moving block 15 to move, and the moving block 15 will drive the pressing rod 16 and the friction block 19 to move, contact the restriction of the strap 5, and then move the position of the adjustment block 10 on the strap 5. After reaching the appropriate position, the twisting block 13 is rotated in the opposite direction. Contrary to the above steps, the pressing rod 16 and the friction block 19 will move to the side close to the strap 5 to restrict the strap 5, thereby completing the adjustment of the length of the strap 5 to make its length adapt to the thickness of the user's arm;

[0049] The problem that the length of the strap 5 may not be suitable for different users' arms due to their different arm thicknesses is solved.

[0050] Preferably, sliding blocks 17 are fixedly connected to both sides of the moving block 15 , and a sliding groove 18 for use with the sliding block 17 is formed on the inner wall of the adjusting groove 11 .

[0051] In this embodiment, by providing a sliding block 17 and a sliding groove 18, the moving trajectory of structures such as the moving block 15 can be limited. When the threaded rod 12 rotates to drive the first bearing (14) and the moving block 15 to move, the moving block 15 and other structures can only move along the trajectory of the sliding block 17 and the sliding groove 18.

[0052] Preferably, one end of the pressing rod 16 is fixedly connected to a friction block 19 , and the friction block 19 is made of plastic.

[0053] In this embodiment, by providing the friction block 19 , the friction force when the pressing rod 16 contacts the binding belt 5 can be increased, thereby effectively limiting the positioning of the binding belt 5 .

[0054] Working principle: when the user pulls the strap 5 downward, the strap 5 will slide under the restriction of the guide roller 20, and the exposed part of the strap 5 will become longer. At the same time, the strap 5 will drive the pulling block 6 to slide in the shell 4, and the pulling block 6 will drive the piston 22 to move. At this time, the shell 4 is under negative pressure, and the gas in the airbag 9 will enter the shell 4 through the transmission tube 8. At this time, the user extends his arm into the strap 5 and loosens the strap 5. The elastic force generated by the spring 7 will drive the pulling block 6 to reset, and the pulling block 6 will drive the strap 5 to tighten and fit the lower surface of the user's arm. When the pulling block 6 is reset, it will drive the piston 22 to reset, squeeze the gas in the shell 4, and make the gas return to the inside of the airbag 9 through the transmission tube 8. The airbag 9 will expand and fit the upper surface of the user's arm. The lower surface of the arm is restricted by the strap 5, and the upper surface is restricted by the airbag 9, which can effectively improve the stability of the motion posture capture device after installation and avoid falling off.

[0055] Taking into account the different arm thicknesses of users, the length of the strap 5 may not be suitable. Therefore, by setting up an adjustment mechanism, the twisting block 13 can be rotated, and the twisting block 13 can drive the threaded rod 12 to rotate. The threaded rod 12 will gradually move to the side close to the twisting block 13, and at the same time drive the first bearing 14 and the moving block 15 to move. The moving block 15 will drive the pressing rod 16 and the friction block 19 to move, contacting the restriction on the strap 5, and then move the adjustment block 10 on the strap 5. After reaching the appropriate position, the twisting block 13 is rotated in the opposite direction. Contrary to the above steps, the pressing rod 16 and the friction block 19 will move to the side close to the strap 5 to restrict the strap 5, thereby completing the adjustment of the length of the strap 5 to make its length suitable for the thickness of the user's arm.

[0056] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An arm motion posture capturing device, comprising a base (1) and a motion sensor (2), wherein the motion sensor (2) is fixedly mounted on the top of the base (1), and characterized in that: A matching groove (3) is provided inside the base (1), and a fastening mechanism is provided inside the matching groove (3), so that the capture device can be worn on the arm; The fastening mechanism comprises a shell (4) fixedly connected to the inner wall of the matching groove (3); a binding belt (5) is provided at the bottom of the base (1); both ends of the binding belt (5) penetrate into the interior of the shell (4) and are fixedly connected to a pulling block (6); one side of the pulling block (6) is fixedly connected to two springs (7); one end of the spring (7) is fixedly connected to the inner wall of the shell (4); An adjustment mechanism, wherein the adjustment mechanism is capable of adjusting the length of the strap (5), so that the length of the strap (5) can be adjusted according to the diameter of the arm.

2. The arm movement posture capturing device according to claim 1, characterized in that: The fastening mechanism also includes a transmission tube (8) fixedly connected to the bottom of the shell (4), the bottom of the transmission tube (8) is fixedly connected to an air bag (9), and the surface of the air bag (9) is fixedly connected to the lower surface of the base (1).

3. The arm movement posture capturing device according to claim 2, characterized in that: The adjustment mechanism comprises an adjustment block (10) located at the bottom of the base (1); two adjustment slots (11) for use with the strap (5) are provided on the top of the adjustment block (10); threaded rods (12) are threadedly connected to both sides of the adjustment block (10); one end of the threaded rod (12) is fixedly connected to a twisting block (13); the other end of the threaded rod (12) passes through the inside of the adjustment slot (11) and is provided with a first bearing (14); one end of the threaded rod (12) is rotatably connected to a moving block (15) via the first bearing (14); one side of the moving block (15) is fixedly connected to two pressing rods (16).

4. The arm movement posture capturing device according to claim 3, characterized in that: Sliding blocks (17) are fixedly connected to both sides of the moving block (15), and the inner wall of the adjusting groove (11) is provided with a sliding groove (18) used in conjunction with the sliding block (17).

5. The arm movement posture capturing device according to claim 3, characterized in that: One end of the pressing rod (16) is fixedly connected to a friction block (19), and the friction block (19) is made of plastic.

6. The arm movement posture capturing device according to claim 2, characterized in that: The inner wall of the matching groove (3) is provided with two guide rollers (20) used in conjunction with the binding belt (5), and second bearings (21) are provided on both sides of the guide rollers (20), which are rotatably connected to the inner wall of the matching groove (3) via the second bearings (21).

7. The arm movement posture capturing device according to claim 2, characterized in that: A piston (22) is fixedly connected to one side of the pulling block (6), and the surface of the piston (22) is in close contact with the inner wall of the housing (4).

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