Plantar pressure detection device

Abstract

The invention discloses a plantar pressure detection device, and belongs to the technical field of plantar pressure detection.The plantar pressure detection device comprises a leg clamping part, a pedal part and a synchronous disc, the leg clamping part is slidably connected to a second sliding seat, and the second sliding seat is slidably connected to a first sliding seat; the pedal part is connected to the third sliding seat in a sliding manner, a pressure sensing device is integrated on the pedal part, and the pedal part is connected to the second sliding seat; the device has the advantages that the third connecting rods are fixed to the faces, away from each other, of the two synchronous discs, the included angle formed by the connecting lines from the two third connecting rods to the centers of the synchronous discs is a flat angle, the third connecting rods and the second sliding bases are connected through the second connecting rods, and the two third connecting rods do circular motion around the centers of the synchronous discs; the two second connecting rods drive the leg clamping parts and the pedal parts on the corresponding sides to alternately move, so that the effect of stepping in situ is achieved, and a person standing on the pedal parts can perform plantar pressure detection in a limited space in a walking posture.

Description

Technical Field

[0001] The present invention relates to the technical field of plantar pressure detection, and in particular to a plantar pressure detection device. Background Art

[0002] Plantar pressure testing is a biomechanical assessment method that uses pressure sensing technology to quantitatively collect the pressure distribution and dynamic changes of the human body's plantar surface when it is in static standing, dynamic walking or exercising. Its core value lies in providing a quantitative analysis basis for foot function in clinical diagnosis, sports science, rehabilitation medicine and other fields, thereby achieving early identification, precise intervention and full-cycle management of foot health problems.

[0003] The implementation of this technology relies on a plantar pressure detection device. During the test, the subject stands on the surface of the device in a prescribed posture or completes a specified action. The device collects plantar pressure distribution data in real time through an array of pressure sensors, and then extracts key characteristic parameters. However, existing detection devices generally have the problem of insufficient adaptability to multiple scenarios: the static detection mode can only obtain standing position pressure data, and the dynamic detection relies on the traditional long-distance pressure sensor array runway to achieve walking gait analysis. This separate design not only leads to high equipment costs, but also has strict requirements on the spatial size of the detection site, which significantly limits its application in different scenarios. Summary of the Invention

[0004] In view of the above-mentioned technical deficiencies, the purpose of the present invention is to provide a plantar pressure detection device to solve the problem of insufficient multi-scenario adaptability of plantar pressure detection devices in the prior art.

[0005] The pedal of the present invention is a pedal of the second embodiment of the present invention, and the pedal of the present invention is a pedal of the second embodiment of the present invention, and the pedal of the present invention is a pedal of the second embodiment of the present invention, and the pedal of the second embodiment of the present invention is a pedal of the second embodiment of the present invention, and the pedal of the second embodiment of the present invention is a pedal of the second embodiment of the present invention, and the pedal of the second embodiment of the present invention is a pedal of the second embodiment of the present invention, and the pedal of the second embodiment of the present invention is a pedal of the second embodiment of the present invention, and the pedal of the second embodiment of the present invention is a pedal of the second embodiment of the present invention, and the pedal of the second embodiment of the present invention is a pedal of the second embodiment of the present invention, and the pedal of the second embodiment of the present invention is a pedal of the second embodiment of the present invention, and the pedal of the second embodiment of the present invention is a pedal of the second embodiment of the present invention,

[0006] Preferably, the first slide includes a first support and a first slide rod fixed on the first support; the second slide includes a first slider slidably connected to the first slide rod, a second support is fixed on the first slider, a second slide rod is fixed on the second support, and the clamping leg part is slidably connected to the second slide rod; the third slide includes a third support and a third slide rod fixed on the third support, and the foot pedal part is slidably connected to the third slide rod.

[0007] Preferably, a limiting plate is sleeved on the second slide rod, and a first spring is sleeved on the outside of the second slide rod, with two ends of the first spring respectively abutting against the limiting plate and the second support.

[0008] Preferably, the clamping leg portion includes a second slider slidably connected to the second sliding rod, a fourth support is fixed on the second slider, a forward and reverse screw rod with a hand wheel is rotatably arranged in the fourth support, and two symmetrically arranged threaded parts are threadedly connected to the forward and reverse screw rods, and a clamp is fixed on the threaded part.

[0009] Preferably, an abutment piece is fixed to the middle of the forward and reverse screw rods, and the threads on the forward and reverse screw rods are centered on the abutment piece and spirally extend in opposite directions toward the two ends of the forward and reverse screw rods.

[0010] Preferably, a second connecting rod is fixed to the bottom of the second support, the second connecting rod is fixedly connected to the pedal portion, and the second connecting rod is also rotatably connected to the first connecting rod.

[0011] Preferably, the synchronous disc is fixed on the disc seat, and an eccentric block is fixed between the two synchronous discs.

[0012] Preferably, a roller is fixed to the bottom of the pedal portion.

[0013] Preferably, a second spring is sleeved on both ends of the first slide bar, one end of the second spring is fixed on the first support, and the other end faces the first slide block.

[0014] Preferably, both ends of the third slide rod are sleeved with a third spring, one end of the third spring is fixed on the third support, and the other end faces the pedal portion.

[0015] The beneficial effects of the present invention are: The present invention effectively solves the technical problem of requiring a long runway for existing dynamic testing through the design of a synchronization disk and a connecting rod mechanism. Specifically, the third connecting rod on the two synchronization disks is arranged at a right angle. When performing circular motion around the center of the disk, the second connecting rod drives the leg clamping part and the foot pedal part to achieve alternating motion, allowing the subject to complete the stepping action on the device, and dynamic walking plantar pressure data can be collected without the need for a long runway. This design converts the linear detection space of a traditional runway into a circular motion space within the device, significantly reducing the equipment's requirements for site size, saving the occupied area of ​​the detection site and avoiding the high cost of long-distance pressure sensor arrays.

[0016] Furthermore, the present invention achieves the integration of static and dynamic testing through a modular structural design. The pressure sensor integrated into the footrest directly captures static pressure data while the subject is standing, while the alternating motion mechanism driven by the synchronization disk simultaneously supports dynamic gait analysis. When switching detection modes, the transition from static to dynamic testing is accomplished simply by controlling the rotational state of the synchronization disk, without having to replace the equipment or rearrange the site. This enables the device to meet diverse testing needs within the same hardware architecture.

[0017] Furthermore, the present invention effectively addresses the technical issue of existing devices' inadequate adaptability to subjects of varying body shapes through the adjustable mechanical design of the leg clamp. Specifically, the leg clamp utilizes a combination of positive and negative screws and symmetrical clips. When the handplate is rotated, the threads on the positive and negative screws drive the clips to move synchronously away from or towards each other, enabling precise adjustment of the clamping force based on the subject's leg size. This adjustable design ensures that subjects of varying body shapes maintain a stable standing posture during testing, avoiding deviations in pressure data due to insecure fixation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 A schematic diagram of the three-dimensional structure of a plantar pressure detection device of the present invention Figure 1 .

[0020] Figure 2 A schematic diagram of the three-dimensional structure of a plantar pressure detection device of the present invention Figure 2 .

[0021] Figure 3 A plantar pressure detection device of the present invention Figure 2Enlarged view of point A in the middle.

[0022] Figure 4 A plantar pressure detection device of the present invention Figure 1 Enlarged view of point B in the middle.

[0023] Figure 5 This is a partial three-dimensional structural diagram of a plantar pressure detection device of the present invention.

[0024] Figure 6 This is a simplified front view of a synchronization disk of a plantar pressure detection device according to the present invention.

[0025] Figure 7 The invention discloses a synchronous disk motion diagram of a plantar pressure detection device. Figure 1 .

[0026] Figure 8 The invention discloses a synchronous disk motion diagram of a plantar pressure detection device. Figure 2 .

[0027] Description of reference numerals: 1. First slide; 11. First support; 12. First slide rod; 2. Second slide; 21. Second support; 22. Second slide rod; 23. First slider; 24. Limiting plate; 25. First spring; 3. Third slide; 31. Third support; 32. Third slide rod; 4. Leg clamp; 41. Second slider; 42. Fourth support; 43. Forward and reverse screw rods; 44. Threaded portion; 45. Clamp; 46. Abutment plate; 47. Hand plate; 5. Synchronous plate; 51. First connecting rod; 52. Second connecting rod; 53. Third connecting rod; 54. Plate seat; 55. Eccentric block; 6. Pedal; 61. Roller. DETAILED DESCRIPTION

[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0029] As mentioned above, existing detection devices generally lack adaptability to multiple scenarios: static detection mode can only obtain pressure data in the standing position, while dynamic detection relies on a traditional long-distance pressure sensor array runway to analyze walking gait. This separate design not only leads to high equipment costs but also places strict requirements on the testing site space, significantly limiting its application in different scenarios.

[0030] To address this issue, the present invention provides a plantar pressure detection device. By converting the linear detection space of a traditional runway into a circular motion space within the device, the device significantly reduces the required site size and costs, enabling its application in a variety of scenarios. The present invention solves this problem through the following approach.

[0031] Example 1: Please refer to the instruction manual Figures 1 to 8 As shown in the figure, the present invention provides a plantar pressure detection device, which includes a sliding base group consisting of a first slide 1, a second slide 2 and a third slide 3 (there are two sliding base groups, one for each of the test subject's legs). The first slide 1 includes two first supports 11 arranged opposite to each other, and the two first supports 11 are connected together by two first slide bars 12. The second slide 2 includes a flat U-shaped second support 21, a first slider 23 is fixed to one side of the second support 21, and the first slider 23 is slidably connected to the first slide bar 12. The second slide bar 22 is also provided with a limiting plate 24, and the outside of the second slide bar 22 is also provided with a first spring 25. The two ends of the first spring 25 are respectively in contact with the limiting plate 24 and the second support 21.

[0032] A second slide bar 22 is fixed on the second slide 2. The third slide 3 is composed of two third supports 31 and two third slide bars 32, similar to the first slide 1.

[0033] In this embodiment 1, Figure 1 、 Figure 2 、 Figure 4 As shown, the device also includes two leg clamps 4, which face opposite directions and correspond to the two sliding base groups. The leg clamps 4 include a second slider 41 slidably connected to the second slide bar 22. A fourth support 42 is fixed to the second slider 41. The fourth support 42 is provided with two symmetrical clamps 45 to clamp the subject's legs.

[0034] Below the leg clamp 4 is a corresponding footrest 6 , which incorporates a pressure sensor (e.g., a pressure sensor array). When a subject steps on the footrest, the pressure sensor reads foot pressure information, which is then collected, transmitted, and analyzed. The footrest 6 is slidably connected to the third slide bar 32 , and two rollers 61 are fixed to its bottom to share the pressure of the third slide bar 32 .

[0035] A second connecting rod 52 is provided on the side of the footrest 6 close to the second slide 2, and a rod seat is provided at the bottom of the second support 21. The second connecting rod 52 is rotatably connected to the rod seat. This allows the subject to drive the leg clamping part 4 to move with his legs, even if the foot does not touch the footrest 6, to drive the footrest 6 to move synchronously, thereby avoiding the problem of missing steps caused by asynchronous displacement.

[0036] At the same time, the second connecting rod 52 is also rotatably connected to the first connecting rod 51, and the end of the first connecting rod 51 away from the second connecting rod 52 is rotatably connected to the third connecting rod 53 (as shown in FIG. Figure 1 As shown in FIG, the third connecting rod 53 is fixed to the synchronous disk 5. There are two synchronous disks 5, which are fixed together and rotatably mounted on the disk seat 54. There is a gap between the two synchronous disks 5, and an eccentric block 55 is fixed in the gap. The eccentric block 55 can adjust the initial position between the synchronous disks 5 (as shown in FIG. Figure 6 As shown, the eccentric block 55 adjusts the initial phase difference between the two third connecting rods 53 by changing the center of gravity distribution of the synchronous disk 5, thereby ensuring the stability of the alternating motion. In this initial position, since there are two second supports 21, there are also two first connecting rods 51, and correspondingly, there are also two third connecting rods 53. The angle formed by the lines connecting the two third connecting rods 53 to the center of the synchronous disk 5 is a straight angle, as shown in FIG. Figure 6 This makes the second slide 2, the third slide 3, the leg clamping part 4 and the footrest part 6 on both sides actually in different horizontal positions (as shown in the dotted line part). Figure 1 As shown in FIG5 , the first and second connecting rods 52 drive the corresponding leg clamping parts 4 and the pedal parts 6 to move alternately.

[0037] Therefore, in the specific implementation of this embodiment, the subject first stands with one foot on one of the footrests 6 and adjusts the leg clamp 4 to clamp the subject's leg (the leg clamp 4 is supported by a deformable memory material, such as plastic or memory metal, and is covered with a layer of flexible silicone material). Then, the subject places the other foot on the other footrest 6 and adjusts the leg clamp 4. After the adjustment is completed, the subject stands completely. If a static plantar pressure test is required, the subject can complete the test by simply standing still.

[0038] When it is necessary to test the plantar pressure of the subject in an active state (such as walking or running), the subject only needs to step out one of the legs in a walking posture, and the leg will drive the leg clamping part 4 to move (driving the second slide 2 on the leg clamping part 4 to move up and down, and the position of the second slide 2 at this time is fixed, or driving the second slide 2 to move back and forth on the first slide 1), thereby changing the position of the second slide 2. Since the second slide 2 is connected to the footrest part 6 through the second connecting rod 52, the footrest part 6 will move with the position of the second slide 2, and then move to the subject's landing point, completing the landing and avoiding stepping on air.

[0039] The movement of the second slide 2 will also drive the first link 51 to move through the second connecting rod 52, thereby driving the synchronous disk 5 to rotate, and the synchronous disk 5 will drive the other second slide 2 and the pedal part 6 to move (for example, Figure 1 For example, the second slide 2 and the pedal 6 on the right side move forward, and under the action of the synchronous disk 5, the second slide 2 and the pedal 6 on the left side move backward. Figures 7 and 8 As shown, alternating motions are achieved. This allows the user to simultaneously achieve the effect of stepping in place while walking, and repeat this process repeatedly. This effectively saves space on the device and reduces the footprint of the pressure sensing unit (which is only located on the footrest 6), thus expanding the device's application scenarios.

[0040] Example 2: Based on the above embodiment, in order to further explain the technical solution clearly and completely, the present invention also provides a second embodiment. In this second embodiment, Figure 4 As shown, a forward and reverse screw rod 43 with a hand plate 47 is rotatably mounted within the fourth support 42. An abutment plate 46 is fixed to the middle of the forward and reverse screw rod 43. The threads on the forward and reverse screw rod 43 extend spirally in opposite directions toward the ends of the forward and reverse screw rod 43, centered on the abutment plate 46. Two symmetrically arranged threaded portions 44 are threadedly connected to the forward and reverse screw rod 43, and a clamping piece 45 is fixed to the threaded portions 44.

[0041] Therefore, when in use, the subject shakes the hand plate 47 to adjust the two clips 45 to move away from or towards each other, thereby adapting to the different leg shapes and specifications of different subjects.

[0042] Example 3: Based on the above embodiments, in order to further clearly and completely explain the technical solutions therein, the present invention also provides a third embodiment. In this third embodiment, a second spring is also sleeved on both ends of the first slide bar 12, one end of the second spring is fixed on the first support 11, and the other end faces the first slider 23 (not shown in the figure). Similarly, a third spring is also sleeved on both ends of the third slide bar 32, one end of the third spring is fixed on the third support 31, and the other end faces the pedal portion 6 (also not shown in the figure). In the natural state, the second spring and the third spring are not respectively in contact with the first slider 23 or the pedal portion 6. As a safety device, the spring mechanism will absorb the impact force during the sliding process in real time, reducing the collision with the device body due to excessive step distance. On the one hand, it effectively protects the device body, and on the other hand, it also reduces the vibration amplitude of the equipment, thereby improving the detection accuracy.

[0043] Therefore, in summary, the present invention and its embodiments have the following advantages over the prior art, including but not limited to: The present invention effectively solves the technical problem of requiring a long runway for existing dynamic testing through the design of the synchronization disk 5 and the connecting rod mechanism. Specifically, the third connecting rod 53 on the two synchronization disks 5 is arranged at a right angle. When performing circular motion around the center of the disk, the second connecting rod 52 drives the leg clamping portion 4 and the foot pedal portion 6 to achieve alternating motion, allowing the subject to complete the in-place stepping action on the device, and dynamic walking plantar pressure data can be collected without the need for a long runway. This design converts the linear detection space of a traditional runway into a circular motion space within the device, significantly reducing the equipment's requirements for site size, saving the occupied area of ​​the testing site and avoiding the high cost of a long-distance pressure sensor array.

[0044] Furthermore, the present invention achieves integrated static and dynamic testing through a modular design. The pressure sensor integrated into the footrest 6 directly captures static pressure data while the subject is standing, while the alternating motion mechanism driven by the synchronization disk 5 simultaneously supports dynamic gait analysis. When switching detection modes, the transition from static to dynamic testing is accomplished simply by controlling the rotational state of the synchronization disk 5, without having to replace equipment or rearrange the site. This enables the device to meet diverse testing needs within the same hardware architecture.

[0045] Furthermore, the present invention effectively addresses the technical issue of existing devices' inadequate adaptability to subjects of varying body types through the adjustable mechanical design of the leg clamp 4. Specifically, the leg clamp 4 utilizes a combination of forward and reverse screws 43 and symmetrical clips 45. When the hand plate 47 is rotated, the threaded portions 44 on the forward and reverse screws 43 drive the clips 45 to move synchronously away from or towards each other, thereby enabling precise adjustment of the clamping force based on the subject's leg size. This adjustable design ensures that subjects of varying body types maintain a stable standing posture during testing, avoiding pressure data deviations caused by insecure fixation.

[0046] Finally, the present invention also provides a safety device for the movement of the device by setting a second spring and a third spring. The spring mechanism will absorb the impact force during the sliding process in real time, reducing the collision with the device body due to excessive step distance. On the one hand, it effectively protects the device body, and on the other hand, it also reduces the vibration amplitude of the equipment, thereby improving the detection accuracy.

[0047] Obviously, those skilled in the art may make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the present invention and its equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A plantar pressure detection device, characterized in that: include: Two clamping legs (4) facing opposite directions, the clamping legs (4) being slidably connected to the second slide (2), and the second slide (2) being slidably connected to the first slide (1); a foot pedal (6) used in conjunction with the leg clamping portion (4), the foot pedal (6) being slidably connected to the third slide seat (3), a pressure sensing device being integrated into the foot pedal (6), and the foot pedal (6) being connected to the second slide seat (2); Two synchronous disks (5) fixed together, wherein the synchronous disks (5) are rotatably connected to the second slide (2); A third connecting rod (53) is fixed to each side of the two synchronous disks (5) that are away from each other. The angle formed by the lines connecting the two third connecting rods (53) to the center of the synchronous disk (5) is a straight angle. The third connecting rod (53) and the second slide seat (2) are connected via a second connecting rod (52). The two third connecting rods (53) perform circular motion around the center of the synchronous disk (5), so that the two second connecting rods (52) drive the clamping leg portion (4) and the pedal portion (6) on the corresponding side to perform alternating motion.

2. A plantar pressure detection device according to claim 1, characterized in that: The first slide seat (1) comprises a first support seat (11) and a first slide rod (12) fixed on the first support seat (11); The second slide seat (2) includes a first slider (23) slidably connected to the first slide bar (12), a second support (21) is fixed to the first slider (23), a second slide bar (22) is fixed to the second support (21), and the clamping leg portion (4) is slidably connected to the second slide bar (22); The third slide seat (3) comprises a third support seat (31) and a third slide rod (32) fixed on the third support seat (31), and the pedal portion (6) is slidably connected to the third slide rod (32).

3. A plantar pressure detection device according to claim 2, characterized in that: A limiting piece (24) is sleeved on the second slide bar (22), and a first spring (25) is sleeved on the outside of the second slide bar (22), with two ends of the first spring (25) respectively abutting against the limiting piece (24) and the second support (21).

4. A plantar pressure detection device according to claim 2, characterized in that: The clamping leg portion (4) includes a second slider (41) slidably connected to the second slide bar (22), a fourth support (42) is fixed to the second slider (41), a forward and reverse screw rod (43) with a hand plate (47) is rotatably arranged in the fourth support (42), and two symmetrically arranged threaded portions (44) are threadedly connected to the forward and reverse screw rod (43), and a clamping piece (45) is fixed to the threaded portion (44).

5. A plantar pressure detection device according to claim 4, characterized in that: A contact piece (46) is fixed to the middle of the forward and reverse screw rods (43), and the threads on the forward and reverse screw rods (43) are centered on the contact piece (46) and spirally extend in opposite directions toward both ends of the forward and reverse screw rods (43).

6. A plantar pressure detection device according to claim 2, characterized in that: A second connecting rod (52) is fixed to the bottom of the second support (21), the second connecting rod (52) is fixedly connected to the pedal portion (6), and the second connecting rod (52) is also rotatably connected to the first connecting rod (51).

7. The plantar pressure detection device according to claim 1, wherein: The synchronous disc (5) is fixed on a disc seat (54), and an eccentric block (55) is fixed between the two synchronous discs (5).

8. The plantar pressure detection device according to claim 1, wherein: A roller (61) is also fixed to the bottom of the pedal portion (6).

9. The plantar pressure detection device according to claim 2, wherein: Second springs are sleeved on both ends of the first slide bar (12), one end of the second spring is fixed on the first support (11), and the other end faces the first slide block (23).

10. The plantar pressure detection device according to claim 2, characterized in that: A third spring is sleeved on both ends of the third slide bar (32), one end of the third spring is fixed on the third support (31), and the other end faces the pedal portion (6).

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