New dual-displacement running platform

Abstract

Disclosed in the present application is a dual-displacement running platform, comprising: a bottom support frame and a track, wherein the bottom support frame is equipped with rollers arranged in the X-axis direction and a first electric motor, and the rollers are drive by the first electric motor to rotate around the Y-axis direction; the track is composed of a plurality of track plates that are fixedly assembled on a first belt, and the first belt is assembled on the rollers of a chassis support frame, and is driven by the first electric motor to drive the track plates to move in the X-axis direction; the bottom support frame is equipped with a second electric motor and a gear shaft in the X-axis direction, and the second electric motor drives the gear shaft to rotate; the bottom support frame is equipped with a limiting rod in the X-axis direction; the track plates are equipped with a driven gear set; under the adjustment of the limiting rod, the driven gear set engages with and disengages from the gear shaft on the bottom support frame; and when the driven gear set engages with the gear shaft, the driven gear set drives a second belt on the track plates to rotate along the Y axis.

Description

Novel dual displacement running platform

[0001] Cross Reference to Related Applications

[0002] This application claims priority to the Chinese patent application No. 2024218719441, filed on August 5, 2024, entitled "Novel dual displacement running platform", the content of which is incorporated herein by reference in its entirety. TECHNICAL FIELD

[0003] The present application relates to the field of sports equipment, in particular to a dual displacement running platform for virtual reality. BACKGROUND

[0004] Virtual reality technology (VR) is a computer simulation system that can create and experience a virtual world. It uses hardware and software to create a highly realistic three-dimensional virtual environment, and then users interact with the virtual environment through necessary auxiliary devices, producing a feeling and experience as if they were in the real environment.

[0005] As a representative of virtual reality technology, the universal running platform is increasingly popular among young people, especially in the virtual game world, which allows people to have an immersive experience while playing. Chinese patent CN104874152A discloses a universal running exercise machine, which has a center platform and a ring-shaped universal running platform. The center platform is located at the center of the running platform, and the upper surface of the universal running platform is covered with a plurality of rolling elements. The rolling elements can roll in place and have a rolling direction towards the center platform. The running platform has a human body support frame. Chinese patent CN113975720A discloses a multi-sensory integrated immersive simulation system, which includes a universal treadmill and at least two movable plate units. The universal treadmill is used to restrict the experimenter within the experience area. The movable plate unit includes an adjusting device and a plate body. The adjusting device is used to drive the plate body to approach or move away from the experimenter.

[0006] However, the above-mentioned universal running platform or exercise machine has the problem of serious limitation of human movement, poor virtual reality experience, and insufficient immersion. The present platform, while retaining the characteristics of the fitness treadmill that are closer to the real world movement, innovatively breaks through the spatial limitation of the daily treadmill that can only move in a single direction through the belt combination that can rotate along the X and Y axes. This not only increases the real movement feeling and enhances the immersion, but also realizes the unlimited spatial expansion of human running, jumping, arbitrary turning, and arbitrary speed. SUMMARY

[0007] The application discloses a double-displacement track type virtual reality universal running platform, and specifically discloses the following contents.

[0008] The running platform comprises a bottom support, a first driving system, a second driving system and a track plate.

[0009] The second driving system comprises a second motor and a gear shaft.

[0010] The driven gear set is arranged at one end of the track plate support close to the gear shaft, is in transmission connection with the driving roller and is engaged with the gear shaft at the opposite position.

[0011] The length direction of the bottom support is perpendicular to the length direction of the track plate.

[0012] The track plate is provided with assembly holes at two ends and is fixed to the outer surface of the belt through assembly bolts.

[0013] Preferably, the first motor and the second motor work alternately.

[0014] Preferably, the first motor and the second motor work simultaneously.

[0015] Preferably, the gear part of the gear shaft has a length smaller than the minimum distance between the driving roller and the driven roller.

[0016] Preferably, the gear support of the driven gear set in the track plate is designed as a convex arc configuration, such as a tortoise back configuration.

[0017] Preferably, the limiting rod is located above the driven gear set and is fixed at both ends to the bottom support; the limiting rod is composed of two circular arc segments protruding downward from both ends and a horizontal segment connecting the two circular arc segments, the length of the horizontal segment is less than the length of the gear shaft gear part; when the driven gear set gradually enters the horizontal position with the rotation of the first belt, the end of the circular arc segment close to the horizontal segment abuts and presses the upper part of the gear support, so that the relative driven gear set at the end of the circular arc segment rotates around the sun gear shaft, and the planetary gear starts to mesh with the gear shaft; the horizontal segment abuts against the upper part of the gear support and presses the gear support downward, so that the planetary gear of the relative driven gear set at the horizontal segment keeps a complete meshing state with the gear shaft. The limiting rod plays a role in assisting the smooth meshing or disengagement of the planetary gear and the gear shaft gear, and maintaining the meshing state.

[0018] Preferably, the side surface of the track shoe support and the side surface of the gear support are provided with columnar protrusions, and the two ends of the positioning spring are connected to the two columnar protrusions respectively.

[0019] Preferably, in the initial state of the driven gear set in the track shoe, the planetary gear is constrained by the positioning spring, and the gear support keeps a fixed included angle with the track shoe support, and when not subjected to the force of the limiting rod, the planetary gear and the gear teeth of the gear shaft always keep a disengaged contact state.

[0020] Preferably, the gear involved in the present application is a spur cylindrical gear, and the top end of the gear tooth is treated with a circular arc.

[0021] The implementation principle of the platform is real-time decomposition of speed, that is, the speed in any direction at any time can be decomposed into the speed along the X-axis and Y-axis directions, the moving direction and speed of the human body are detected in real time through an external sensor, and the detected speed is decomposed into the speed along the X-axis and Y-axis directions in real time through an external computer, while the first motor and the second motor are controlled to perform reverse speed hedging along the X-axis and Y-axis directions, so that the human body always remains in the center position of the platform.

[0022] The platform of the present application has the beneficial effects that: the platform expands the spatial limitation of the daily one-dimensional treadmill through the belt set which can rotate along two mutually perpendicular axes, realizes double displacement motion, and is closer to the real motion feeling of infinite space.

[0023] The platform provides a set of basic hardware system, which can be used in cooperation with external sensors, external VR equipment and external computer control system. BRIEF DESCRIPTION OF DRAWINGS

[0024] The accompanying drawings, which are incorporated herein and constitute part of this specification, illustrate embodiments consistent with the application and, together with the description, further serve to explain the principles of the application. It is apparent that the drawing in the following description is only some embodiments of the present application, and other drawings can be obtained according to these drawings without creative labor for those skilled in the art. In the drawings:

[0025] Figure 1: Overall schematic diagram of the double displacement running platform 1;

[0026] Figure 2: Overall schematic diagram of the double displacement running platform 2 (hidden part of the track plate);

[0027] Figure 3: Front view of the track plate of the double displacement running platform;

[0028] Figure 4: Exploded view of the track plate of the double displacement running platform;

[0029] Figure 5: Partial view of the double displacement running platform.

[0030] Figure 5: Partial view of the double displacement running platform. DETAILED DESCRIPTION

[0031] Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments, however, can be implemented in many different forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art.

[0032] Please refer to Figures 1 and 2, which respectively show the overall schematic diagram of the running platform of the present application from different perspectives.

[0033] The running platform comprises a bottom support 2, a first driving system, a second driving system and a track plate. The first driving system comprises a first motor 1, two driving rollers 11, two driven rollers 4 and a first belt 3. The two driving rollers 11 are arranged on both sides of a driving roller shaft 8 and are installed at one end of the X-axis direction of the bottom support 2. The first motor 1 is connected with the driving roller shaft 8 and can drive the driving rollers 11 to rotate. The two driven rollers 4 are installed at the other end of the X-axis direction of the bottom support 2 through a driven roller shaft 5. The driving rollers 11 and the driven rollers 4 on the same side of the roller shaft are connected through the first belt 3. When the first motor 1 works, it drives the driving rollers 11 and the first belt 3 to rotate, thereby realizing the displacement in the X direction.

[0034] The track plate 7 is arranged on the first belt 3 in the X-axis direction at intervals. The two ends of the track plate 7 are fixed on the two first belts 3 through assembly bolts 6. The second driving system comprises a second motor 10 and a gear shaft 9. The gear shaft 9 is arranged horizontally along the length direction of the chassis support 2. The second motor 10 is connected with the gear shaft 9 and can drive the gear shaft 9 to rotate.

[0035] Further referring to FIG. 3 and FIG. 4, the detailed structure of the track plate 7 is shown. The track plate 7 comprises a track plate support 701 and a driven gear set. The driving roller 704 and the driven roller 706 are arranged in the track plate support 701. The driving roller 704 and the driven roller 706 are installed in the driving roller hole 711 and the driven roller hole 712 of the track plate support 701 respectively and are connected through the second belt 705. The second belt 705 rotates along the length direction of the track plate 7. Assembly holes 710 are opened at the two ends of the track plate support 701 in the Y-axis direction. The track plate support 701 is fixed on the first belt 3 through the assembly bolts 6.

[0036] The driven gear set comprises a sun gear 707, a planet gear 702, a gear support 703 and a positioning spring 708. The sun gear 707 is installed on the driving roller 704. The planet gear 702 installed on the gear support 703 is engaged with the sun gear 707. The positioning spring 708 connects the track plate support 701 and the gear support 703. The driving roller 704 of the track plate support 701 is coaxially connected with the sun gear 707 of the driven gear set. The planet gear 702 can rotate around the sun gear 707 under the traction of the gear support 703. The gear support 703 is connected with the driving roller 704 through a bearing 713. The track plate support 701 and the gear support 703 are both provided with columnar protrusions 709. The two ends of the positioning spring 708 are connected with the two columnar protrusions 709 respectively.

[0037] The gear shaft 9 can be engaged with the planet gear 702 at the opposite position. The second motor 10 drives the gear shaft 9 to rotate and drives the driving roller 704 and the second belt 705 to rotate through the planet gear 702 and the sun gear 707, thereby realizing the displacement in the Y direction.

[0038] The first motor 1 can drive the first belt 3 to rotate along the X-axis direction, and the second motor 10 can drive the second belt 705 to rotate along the Y-axis direction, and the X-axis direction is perpendicular to the Y-axis direction, so that the double displacement movement can be realized on the running platform.

[0039] Further referring to Fig. 5, the structure for limiting the gear engagement of the rod is shown. The limiting rod 12 is located above the driven gear set, and both ends are fixed to the bottom support 2; the limiting rod 12 is composed of two downward protruding circular arc segments 1201, 1202 and a horizontal segment 1203 connecting the two circular arc segments 1202, and the length of the horizontal segment 1203 is less than the length of the gear part of the gear shaft 9; when the driven gear set gradually enters the horizontal position with the rotation of the first belt 3, at this time, the high circular arc segment 1201 does not contact the driven gear set, and the positioning spring 708 of the driven gear set is in the initial state, that is, the gear teeth of the driven gear set are in the disengaged contact state with the gear teeth of the gear shaft 9; as the driven gear set continues to pass through the low circular arc segment 1202 of the limiting rod 12, the protruding arc of the gear support 703 of the driven gear set is extruded by the limiting rod 12, the gear support 703 is deflected under force, drives the planetary gear 702 to rotate around the sun gear 707, and gradually narrows the distance with the gear teeth of the gear shaft 9; since the top ends of the planetary gear 702 and the gear teeth of the gear shaft 9 are both arc-shaped, when the planetary gear 702 and the gear teeth of the gear shaft 9 start to contact, the arc-shaped contact part at the top end of the gear teeth will slip, causing the planetary gear 702 and the gear teeth of the gear shaft 9 to relatively deflect, and under the extrusion of the limiting rod 12, they move inward to achieve engagement, and when the driven gear set moves to the horizontal segment of the limiting rod 12, complete engagement with the gear shaft 9 is achieved. Thus, the gear shaft 9 serves as the power source of the track plate 7, driving the second belt 705 of the track plate 7 to rotate. The limiting rod 12 plays a role in assisting the smooth engagement and maintaining the engagement state of the planetary gear 702 and the gear of the gear shaft 9.

[0040] At the same time, since the planetary gear 702 of the driven gear set and the gear shaft 9 are both cylindrical spur gears, the planetary gear 702 rotates along the Y-axis direction under the drive of the gear shaft 9, and at the same time, it is displaced along the X-axis direction under the drive of the first motor 1 and the first belt 3. When the driven gear set moves to the high circular arc segment 1201 of the limiting rod 12, the gear support 703 of the driven gear set returns to the initial state under the action of the positioning spring 708, at which time the planetary gear 702 of the driven gear set and the gear shaft 9 are disengaged.

[0041] The above embodiments are only used to illustrate the technical solutions of the present application and not to limit, and the modifications or equivalent replacements of the technical solutions of the present application made by those skilled in the art are all included in the scope of the claims of the present application, as long as they do not deviate from the spirit and scope of the technical solutions of the present application.

Claims

1. A double displacement running platform, comprising a bottom support, two driving rollers arranged on both sides of a driving roller shaft, mounted at one end of the length direction of the chassis support, a first motor connected with the driving roller shaft, configured to drive the two driving rollers to rotate; two driven rollers mounted at the other end of the length direction of the chassis support through a driven roller shaft; the driving rollers and the driven rollers on the same side of the roller shaft are connected through a first belt, the first belt rotates along the length direction of the bottom support, two belts are arranged with track plates perpendicular to the length direction of the bottom support at intervals, and the track plates are fixed on the two belts through assembly bolts at both ends respectively; the track plate comprises a track plate support, a driving roller and a driven roller are arranged in the track plate support, the driving roller and the driven roller are connected through a second belt, and the second belt rotates along the length direction of the track plate; characterized in that: a second motor and a gear shaft connected with the second motor are further included, the gear shaft is arranged horizontally along the length direction of the chassis support, a driven gear set is arranged at one end of the track plate close to the gear shaft, the driven gear set is connected with the driving roller in transmission, and the gear shaft is engaged with the driven gear set in opposite position.

2. The dual displacement running platform of claim 1, wherein, The first motor and the second motor work alternately.

3. The dual displacement running platform of claim 1, wherein, The first motor and the second motor work simultaneously.

4. The dual displacement running platform of claim 1, wherein, The gear part of the gear shaft has a length less than the minimum distance between the driving roller and the driven roller.

5. The dual displacement running platform of claim 1, wherein, The driven gear set of the track plate comprises a sun gear, a planetary gear, a gear support and a positioning spring, the sun gear is mounted on the driving roller, the planetary gear mounted on the gear support is engaged with each other, the positioning spring connects the track plate support and the gear support, and the driving roller is coaxially connected with the sun gear.

6. The dual displacement running platform of claim 5, wherein, The upper part of the gear support is designed as a convex arc configuration.

7. The dual displacement running platform of claim 5, wherein, A limiting rod above the driven gear set is further included, both ends of the limiting rod are fixed to the bottom support; the limiting rod is composed of a high circular arc segment, a low circular arc segment and a horizontal segment connecting the two low circular arc segments, both ends of the limiting rod protrude downward, the length of the horizontal segment is less than the length of the gear part of the gear shaft; wherein the high circular arc segment does not contact the planetary gear set, the low circular arc segment abuts and presses the upper part of the gear support, so that the driven gear set at the end of the circular arc segment rotates around the sun gear shaft; the horizontal segment abuts and presses the upper part of the gear support, so that the planetary gear of the driven gear set opposite to the horizontal segment keeps complete engagement with the gear shaft.

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