Analog walking device for virtual reality

Abstract

The application relates to the technical field of virtual reality, in particular to a simulation walking device for virtual reality, which comprises a base, the base is rotationally connected with a rotary disc, the rotary disc is installed with a supporting plate, the supporting plate is provided with a fixing groove, the fixing groove is slidably connected with a sliding seat, the sliding seat is provided with a waistband, the supporting plate is provided with a friction mechanism for limiting the rotation of the rotary disc, the friction mechanism comprises a friction ring installed on the base, the fixing groove is provided with a sliding block, the sliding block is installed with a linkage rod, and the linkage rod is provided with a friction pushing structure. The application realizes the gradual increase of the locking force of the rotary disc in the squatting process through the cooperation of the inclined surface of the sliding seat and the sliding block and with the help of the friction ring; meanwhile, a protection structure is arranged, when the user accidentally loses stability and falls, the rotary disc can be continuously kept in the braking state, the user can avoid falling again when getting up from the ground by habitually supporting the ground with hands after falling down because the rotary disc can rotate, and secondary injury can be prevented.

Description

Technical Field

[0001] This invention relates to the field of virtual reality technology, and more specifically to a simulated walking device for virtual reality. Background Technology

[0002] Virtual reality walking simulators are physical training devices that enable large-scale movement in virtual space while stationary. Their core working principle is to collect signals of the user's steps and changes in center of gravity, and drive the platform to perform reverse compensation movements, so that the user is always constrained to stay in a safe area in the center of the platform. In existing devices of this type, the user stands on a rotatable turntable, and the body is connected to the protective slider on the support arm through a belt. The slider can follow the body's movements and adapt to various posture changes such as standing, squatting, and kneeling.

[0003] In actual squat training, if a user experiences slippage or loss of balance, relying solely on the waist belt for restraint is a limited and unreliable protective measure. While some existing devices can lock the rotating platform after the user has squatted down, this locking only takes effect after the squatting motion is fully completed. During the dynamic descent phase, there is a lack of effective transitional protection, allowing the rotating platform to continue rotating freely, which can easily cause the user's feet to twist and slip, posing a significant safety hazard. At the same time, in a semi-squatting position, users often need to retain the ability to make small adjustments. Most existing devices do not lock this position, but if the rotating platform's rotational resistance is too low and the rotation is too smooth, it can easily lead to excessive rotation and uncontrolled deflection, affecting training operations and further increasing the risk of use.

[0004] Therefore, it is necessary to invent a simulated walking device for virtual reality to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to provide a simulated walking device for virtual reality, which improves the safety of the user during squatting and standing by gradually locking the turntable through a linkage locking mechanism.

[0006] To achieve this objective, the present invention adopts the following technical solution: A simulated walking device for virtual reality is provided, comprising a base, a turntable rotatably connected to the base, a support plate mounted on the turntable, a fixing groove on the support plate, a sliding seat slidably connected to the fixing groove, a waist belt on the sliding seat, and a friction mechanism on the support plate for limiting the rotation of the turntable. The friction mechanism includes a friction ring mounted on the base, a sliding block on the fixing groove, a linkage rod mounted on the sliding block, and a friction pushing structure on the linkage rod. The sliding seat sliding downwards can drive the sliding block to move, and the linkage rod drives the friction pushing structure to press against the inner wall of the friction ring.

[0007] As a preferred embodiment of a simulated walking device for virtual reality, the friction mechanism further includes a sliding groove formed in the support plate, a sliding rod installed in the sliding groove, a slider slidably connected to the sliding block, and a return spring sleeved on the outer side of the sliding rod.

[0008] As a preferred embodiment of a simulated walking device for virtual reality, the friction pushing structure includes a telescopic groove formed in the linkage rod, a telescopic spring installed in the telescopic groove, a telescopic rod installed in the telescopic spring, and a friction block that abuts against the friction ring installed in the telescopic rod.

[0009] As a preferred embodiment of a simulated walking device for virtual reality, the support plate is provided with a protective structure for limiting the sliding of the sliding seat. The protective structure includes a reserved groove in the support plate, a positioning block slidably connected to the reserved groove, a pull rod installed on the positioning block, a positioning spring sleeved on the outside of the pull rod, and a positioning hole for engaging with the positioning block on the sliding seat.

[0010] As a preferred embodiment of a simulated walking device for virtual reality, the positioning block is arranged in an arc shape, and the sliding seat is provided with a guide arc surface adapted to it.

[0011] As a preferred embodiment of a simulated walking device for virtual reality, the protective structure further includes a fixed cylinder installed in a fixed groove, a fixed spring installed inside the fixed cylinder, a fixed rod installed on the fixed spring, a protective plate installed on the fixed rod, and a limit switch installed in the fixed groove. The limit switch is used to detect whether the sliding seat has slid to the lowest position, thereby determining whether the user has lost stability and fallen.

[0012] As a preferred embodiment of a simulated walking device for virtual reality, the sliding seat is provided with a driving ramp, and the sliding block is provided with a guide ramp adapted to the driving ramp of the sliding seat.

[0013] As a preferred embodiment of a simulated walking device for virtual reality, the support plate is equipped with a vertical plate that provides sliding support for the linkage rod.

[0014] As a preferred embodiment of a simulated walking device for virtual reality, a sliding rod is installed in the fixed groove, and the sliding seat has a through hole that slides with the sliding rod.

[0015] As a preferred embodiment of a simulated walking device for virtual reality, the base is provided with steps to facilitate the user's entry and exit from the device, the steps are equipped with locking blocks, and the base has slots for engaging and positioning with the locking blocks.

[0016] The beneficial effects of this invention are as follows: 1. Through the transmission between the sliding seat and the inclined plane of the sliding block, the clamping force of the friction block on the friction ring is adaptively changed according to the squatting depth: In the half-squatting state, the turntable rotates with damping, which can not only meet the rotation requirements of simulated walking training, but also suppress the turntable from rotating too flexibly, reducing the risk of instability and falling during training; while after squatting completely, the locking force is significantly increased, and the turntable is not easy to rotate at will, improving the stability of use in the squatting posture; and elastic buffering compensation can be achieved with the help of telescopic springs to avoid component impact and jamming damage caused by rigid hard top of the mechanism, realize smooth adjustment of damping force, and improve the service life and smooth operation of the mechanism.

[0017] 2. In the event of instability and fall, the sliding seat pushes the protective plate to trigger the limit switch, achieving electrical locking of the turntable and completing electrical protection. On the other hand, the positioning block engages with the positioning hole to achieve purely mechanical rigid locking, preventing the sliding seat from sliding up automatically. The mechanical locking does not rely on the circuit, and can still reliably lock even if the electrical control fails, preventing the turntable from rotating when the user gets up after falling and bracing themselves with their hands, thus avoiding secondary injuries from falling again, providing high safety redundancy. Furthermore, during the instability and fall, the fixing spring can buffer the impact load brought by the rapid fall of the sliding seat, preventing the limit switch from being damaged by violent impact, protecting electrical detection components, and improving equipment reliability. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments of the present invention will be briefly described below. Obviously, the drawings described below are merely some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0019] Figure 1 This is a schematic diagram of the overall partial cross-sectional structure of the present invention.

[0020] Figure 2 This is a schematic diagram of the overall structure of the explosion at the step of the present invention.

[0021] Figure 3 This is a schematic diagram of the overall structure of the invention viewed from below.

[0022] Figure 4 This is a top view of the structure of the present invention.

[0023] Figure 5 This is a schematic diagram of a partial cross-sectional structure of the support plate of the present invention.

[0024] Figure 6 This is a side view cross-sectional structural diagram of the support plate of the present invention.

[0025] Figure 7 This is the present invention. Figure 1Enlarged structural diagram at point A in the middle.

[0026] Figure 8 This is the present invention. Figure 5 Enlarged structural diagram at point B.

[0027] Figure 9 This is the present invention. Figure 6 Enlarged structural diagram at point C.

[0028] In the picture: 1. Waist belt; 2. Support plate; 3. Friction mechanism; 31. Friction ring; 32. Friction pushing structure; 321. Friction block; 322. Telescopic groove; 323. Telescopic spring; 324. Telescopic rod; 33. Linkage rod; 34. Sliding block; 35. Protective structure; 351. Positioning hole; 352. Fixed cylinder; 353. Limit switch; 354. Protective plate; 355. Positioning block; 356. Fixed spring; 357. Fixed rod; 358. Reserved groove; 359. Positioning spring; 3510. Pull rod; 36. Sliding groove; 37. Slide rod; 38. Return spring; 39. Slider; 4. Vertical plate; 5. Turntable; 6. Base; 7. Step; 8. Fixed groove; 9. Slot; 10. Locking block; 11. Sliding rod; 12. Sliding seat. Detailed Implementation

[0029] The technical solution of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0030] The accompanying drawings are for illustrative purposes only and are schematic diagrams, not actual images. They should not be construed as limiting the scope of this patent. To better illustrate the embodiments of the present invention, some parts in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0031] In the accompanying drawings of the embodiments of the present invention, the same or similar reference numerals correspond to the same or similar components. In the description of the present invention, it should be understood that if terms such as "upper," "lower," "left," "right," "inner," and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting the present patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0032] In the description of this invention, unless otherwise explicitly specified and limited, the term "connection" or similar designation indicating a connection between components should be interpreted broadly. For example, it can refer to a fixed connection, a detachable connection, or an integral part; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can refer to the internal communication between two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0033] refer to Figures 1 to 9 This invention provides a simulated walking device for virtual reality, including a base 6, a turntable 5 rotatably connected to the base 6, a support plate 2 mounted on the turntable 5, a fixing groove 8 on the support plate 2, a sliding seat 12 slidably connected to the fixing groove 8, a waist belt 1 on the sliding seat 12, and a friction mechanism 3 for limiting the rotation of the turntable 5 on the support plate 2. The friction mechanism 3 includes a friction ring 31 mounted on the base 6, a sliding block 34 on the fixing groove 8, a linkage rod 33 mounted on the sliding block 34, and a friction pushing structure 32 on the linkage rod 33. The sliding seat 12 slides downward to drive the sliding block 34 to move, and the linkage rod 33 drives the friction pushing structure 32 to press against the inner wall of the friction ring 31. Through grooves are opened on both sides of the bottom wall of the fixing groove 8, and the linkage rod 33 can slide back and forth in these through grooves.

[0034] Specifically, such as Figure 1 , Figure 5 , Figure 6 and Figure 8 As shown, the friction mechanism 3 also includes a sliding groove 36 formed in the support plate 2. A sliding rod 37 is installed in the sliding groove 36. A slider 39 connected to the sliding block 34 is slidably connected to the sliding rod 37. A return spring 38 is sleeved on the outer side of the sliding rod 37. The sliding seat 12 is provided with a driving inclined surface, and the sliding block 34 is provided with a guide inclined surface adapted to the driving inclined surface of the sliding seat 12.

[0035] In this embodiment, when the user squats, the waist belt 1 drives the sliding seat 12 to slide downwards. Then, with the cooperation of the driving inclined surfaces on both sides of the sliding seat 12 and the guide inclined surface of the sliding block 34, the sliding block 34 is driven to move, thereby driving the linkage rod 33 to move, so that the friction block 321 presses against the inner wall of the friction ring 31. As the squatting depth increases, the friction locking force of the friction block 321 against the inner wall of the friction ring 31 gradually increases: in the half-squatting state, the rotary table 5 can rotate with damping to meet the needs of walking training, while avoiding the rotary table 5 rotating too smoothly and causing the user to lose stability and fall; after squatting completely, the locking force on the friction ring 31 is greatly increased, and the rotary table 5 is not easy to rotate randomly.

[0036] Specifically, such as Figure 1 , Figure 5 and Figure 7As shown, the friction jacking structure 32 includes a telescopic groove 322 opened in the linkage rod 33, a telescopic spring 323 is installed in the telescopic groove 322, a telescopic rod 324 is installed in the telescopic spring 323, and a friction block 321 that abuts against the friction ring 31 is installed in the telescopic rod 324.

[0037] In this embodiment, during the squatting locking process, the friction block 321 abuts against the inner wall of the friction ring 31 and is subjected to the reverse reaction force of the friction ring 31, which drives the telescopic rod 324 to slide into the telescopic groove 322 and compress the telescopic spring 323. At this time, the telescopic spring 323 can provide elastic buffer compensation to avoid rigid tightening causing component jamming and impact damage. At the same time, the friction locking force is gradually increased by the change of the compression of the telescopic spring 323, so as to realize the damping force adaptively adjusts with the squatting stroke.

[0038] Specifically, such as Figure 3 , Figure 5 , Figure 6 , Figure 8 and Figure 9 As shown, the support plate 2 is provided with a protective structure 35 for limiting the sliding of the sliding seat 12. The protective structure 35 includes a reserved groove 358 formed in the support plate 2. A positioning block 355 is slidably connected to the reserved groove 358. A pull rod 3510 is installed on the positioning block 355. A positioning spring 359 is sleeved on the outer side of the pull rod 3510. The sliding seat 12 has a positioning hole 351 that engages with the positioning block 355. The positioning block 355 is arc-shaped, and the sliding seat 12 has a guide arc surface that matches it.

[0039] Specifically, such as Figure 1 , Figure 2 , Figure 5 , Figure 6 , Figure 8 and Figure 9 As shown, the protective structure 35 also includes a fixed cylinder 352 installed in the fixed groove 8. A fixed spring 356 is installed inside the fixed cylinder 352, a fixed rod 357 is installed on the fixed spring 356, and a protective plate 354 is installed on the fixed rod 357. A limit switch 353 is installed in the fixed groove 8. The limit switch 353 is used to detect whether the sliding seat 12 has slid to the lowest position, thereby determining whether the user has lost stability and fallen. The limit switch 353 is preferably a push-button limit switch.

[0040] In this embodiment, when the user accidentally loses balance and falls, the downward stroke of the sliding seat 12 is greater than the normal full squat stroke, which will further drive the sliding block 34 to move, further increasing the locking force of the friction block 321 on the friction ring 31; when the sliding seat 12 descends and contacts the top of the protective plate 354, it will push it down and drive the fixed rod 357 to slide and compress the fixed spring 356 until it touches the limit switch 353, triggering the electronic locking of the rotary table 5, completing the electronic protection (this electronic locking is a conventional control method of existing simulated walking devices, and this application has not improved the circuit and controller part corresponding to the electronic locking, so no reference numerals are set in the figure, and no detailed description is given). The fixed spring 356 can absorb the impact of the rapid fall of the sliding seat 12, buffer the collision, and protect the limit switch 353 from impact damage; at the same time, the arc-shaped surface on one side of the bottom of the sliding seat 12 and the positioning block The interaction of the arc-shaped surfaces at the top of 355 causes the sliding seat 12 to descend a certain distance, which in turn drives the positioning block 355 to move, causing the pull rod 3510 to slide and compress the positioning spring 359 until the positioning block 355 is engaged in the positioning hole 351. At this time, the end of the friction block 321 is rigidly engaged with the end of the linkage rod 33, achieving rigid locking of the friction ring 31. This also prevents the sliding seat 12 from continuously pressing down and damaging the limit switch 353. After the positioning block 355 is engaged in the positioning hole 351, it can lock the sliding seat 12, preventing it from automatically returning to its original position. This prevents the user from falling and then habitually using their hands to brace themselves up, which could cause a secondary fall due to the rotation of the turntable 5. After the protective locking is completed, the user can unfasten the waist belt 1, leave the equipment from the base 6, and manually pull the pull rod 3510 to disengage the positioning block 355 from the positioning hole 351, thus completing the manual unlocking. Alternatively, someone else can assist in the manual unlocking operation.

[0041] Specifically, such as Figure 1 , Figure 2 and Figure 5 As shown, the support plate 2 is equipped with a vertical plate 4, which provides sliding support for the linkage rod 33. One end of the linkage rod 33 is slidably engaged with the lower ends of both sides of the support plate 2.

[0042] In this embodiment, the vertical plate 4 can limit the sliding of the linkage rod 33 and prevent the suspended section of the linkage rod 33 from being too long, thus ensuring the smoothness of the back-and-forth sliding of the linkage rod 33.

[0043] Specifically, such as Figure 1 , Figure 2 , Figure 5 , Figure 6 and Figure 8 As shown, a sliding rod 11 is installed in the fixed groove 8, and the sliding seat 12 has a through hole that slides with the sliding rod 11.

[0044] In this embodiment, the sliding rod 11 is used to improve the stability of the vertical sliding of the sliding seat 12, and to ensure that the vertical descent of the sliding seat 12 is in cooperation with the inclined surface of the sliding block 34.

[0045] Specifically, such as Figures 1 to 4 As shown, the base 6 is provided with steps 7 to facilitate users to get on and off the equipment. Steps 7 are equipped with locking blocks 10, and the base 6 has a slot 9 that engages and positions with the locking blocks 10.

[0046] In this embodiment, the step 7 facilitates the user's movement up and down the turntable 5, and the engagement between the locking block 10 and the slot 9 allows for the disassembly and assembly of the step 7 and the base 6, making it convenient to disassemble the step 7 for cleaning or replacement.

[0047] In use, the user can stand on the turntable 5 using the step 7, and then fasten the belt 1 around the waist. With the help of VR glasses and other peripherals, the user can conduct simulated walking training on the turntable 5. When the user squats, the sliding seat 12 and the inclined surface of the sliding block 34 cooperate to push the friction block 321 against the inner wall of the friction ring 31. As the squatting depth increases, the friction locking force of the friction block 321 against the inner wall of the friction ring 31 gradually increases, so that the turntable 5 can rotate with damping in the half-squatting position, which meets the requirements of walking training and avoids the user from losing stability and falling due to the turntable 5 rotating too flexibly. After squatting completely, the locking force on the friction ring 31 is significantly enhanced, and the turntable 5 is difficult to rotate at will. If the user accidentally loses their balance and falls, the sliding seat 12 contacts the protective plate 354 and pushes it down to touch the limit switch 353, triggering the electric locking of the rotary table 5 to achieve electric protection; at the same time, the positioning block 355 locks the sliding seat 12 into the positioning hole 351, restricting it from automatically resetting upwards, and preventing the user from falling again when they habitually use their hands to support themselves and get up, because the rotary table 5 can rotate; afterwards, the user can unfasten the belt 1 to leave the device from the base 6, which can be unlocked manually by themselves or with the assistance of others.

[0048] It should be stated that the above-described specific embodiments are merely preferred embodiments of the present invention and the technical principles employed. Those skilled in the art should understand that various modifications, equivalent substitutions, and variations can be made to the present invention. However, such variations, as long as they do not depart from the spirit of the present invention, should be within the scope of protection of the present invention. Furthermore, some terminology used in this specification and claims is not limiting, but merely for ease of description.

Claims

1. A simulated walking device for virtual reality, characterized in that: The system includes a base (6), which is rotatably connected to a turntable (5). The turntable (5) is equipped with a support plate (2). The support plate (2) has a fixed groove (8). The fixed groove (8) is slidably connected to a sliding seat (12). The sliding seat (12) is equipped with a belt (1). The support plate (2) is provided with a friction mechanism (3) for limiting the rotation of the turntable (5). The friction mechanism (3) includes a friction ring (31) installed on the base (6). The fixed groove (8) is provided with a sliding block (34). The sliding block (34) is equipped with a linkage rod (33). The linkage rod (33) is provided with a friction push structure (32). The sliding seat (12) slides downward to drive the sliding block (34) to move, and the linkage rod (33) drives the friction push structure (32) to press against the inner wall of the friction ring (31).

2. The simulated walking device for virtual reality according to claim 1, characterized in that: The friction mechanism (3) further includes a sliding groove (36) opened on the support plate (2), a sliding rod (37) is installed in the sliding groove (36), the sliding rod (37) is slidably connected to a slider (39) connected to the sliding block (34), and a return spring (38) is sleeved on the outside of the sliding rod (37).

3. The simulated walking device for virtual reality according to claim 1, characterized in that: The friction push structure (32) includes a telescopic groove (322) opened in the linkage rod (33), a telescopic spring (323) is installed in the telescopic groove (322), a telescopic rod (324) is installed in the telescopic spring (323), and a friction block (321) abutting against the friction ring (31) is installed in the telescopic rod (324).

4. The simulated walking device for virtual reality according to claim 1, characterized in that: The support plate (2) is provided with a protective structure (35) for limiting the sliding of the sliding seat (12). The protective structure (35) includes a reserved groove (358) opened in the support plate (2). The reserved groove (358) is slidably connected to a positioning block (355). The positioning block (355) is equipped with a pull rod (3510). A positioning spring (359) is sleeved on the outside of the pull rod (3510). The sliding seat (12) is provided with a positioning hole (351) that engages with the positioning block (355).

5. A simulated walking device for virtual reality according to claim 4, characterized in that: The positioning block (355) is arc-shaped, and the sliding seat (12) is provided with a guide arc surface that is adapted to it.

6. A simulated walking device for virtual reality according to claim 4, characterized in that: The protective structure (35) also includes a fixed cylinder (352) installed in the fixed groove (8), a fixed spring (356) installed in the fixed cylinder (352), a fixed rod (357) installed in the fixed spring (356), a protective plate (354) installed in the fixed rod (357), and a limit switch (353) installed in the fixed groove (8). The limit switch (353) is used to detect whether the sliding seat (12) has slid to the lowest position, thereby determining whether the user has lost stability and fallen.

7. The simulated walking device for virtual reality according to claim 1, characterized in that: The sliding seat (12) is provided with a driving slope, and the sliding block (34) is provided with a guide slope that is adapted to the driving slope of the sliding seat (12).

8. A simulated walking device for virtual reality according to claim 1, characterized in that: The support plate (2) is equipped with a vertical plate (4), which is used to provide sliding support for the linkage rod (33).

9. A simulated walking device for virtual reality according to claim 1, characterized in that: A sliding rod (11) is installed in the fixed groove (8), and the sliding seat (12) has a through hole that slides with the sliding rod (11).

10. A simulated walking device for virtual reality according to claim 1, characterized in that: The base (6) is provided with steps (7) to facilitate users to get on and off the equipment. The steps (7) are equipped with a locking block (10). The base (6) is provided with a slot (9) that engages and positions with the locking block (10).

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