CN109375375B - A weight-reducing device for head-mounted equipment - Google Patents

Abstract

The application discloses a weight-reducing device of head-mounted equipment, which comprises a balance disc, a traction wire and a plurality of coiling and uncoiling devices; the balance disc is used for fixedly connecting with the head-mounted equipment, a plurality of coiling and uncoiling devices are hung and installed at different positions above the head-mounted equipment, each coiling and uncoiling device pulls the balance disc through a pulling wire, and the pulling force of each coiling and uncoiling device pulling the balance disc is adjusted along with the position change of the balance disc. According to the application, through a suspension mode, an auxiliary force for upward lifting is provided for the head-mounted equipment by means of the balance disc, the traction wire and the winding and unwinding device, so that the pressure on the head of a user when the head-mounted equipment is used is reduced, the light wearing of the head-mounted equipment is realized, neck fatigue is not caused even if the head-mounted equipment is used for a long time, and the head-mounted equipment is not limited by the gravity of the head-mounted equipment.

Description

A weight-reducing device for head-mounted equipment

Technical field

The invention relates to a weight-reducing device for head-mounted equipment.

Background technique

With the continuous popularity of virtual reality/augmented reality (VR/AR) devices, how to improve the comfort of head-mounted devices and meet users' needs for long-term immersive experience is becoming an important consideration in the design of VR/AR devices. . Current VR/AR head-mounted products generally have the problem of heavy product weight. If users wear them for a long time, they are prone to neck fatigue, which seriously affects the user experience. Therefore, product weight has become an important factor in the design of such products. Control parameters. However, the current common weight reduction design ideas only include trying lighter materials, reducing product thickness, optimizing structural disassembly, and selecting lighter components. Limited by the current technical level and cost budget, the above design ideas can only slightly reduce the weight of the headset product, but are not enough to significantly improve the user experience.

Contents of the invention

In view of the problem in the prior art that head-mounted products are heavy and uncomfortable to wear, a head-mounted device weight reduction device of the present invention is proposed to overcome the above problems.

In order to achieve the above objects, the present invention adopts the following technical solutions:

A head-mounted equipment weight reduction device, including a balance plate, a traction line and multiple retracting and releasing wire devices;

The balance plate is used to fixedly connect the headset. Multiple retracting and unwinding devices are suspended and installed at different positions above the headset. Each retracting and unwinding device pulls the balance plate through a traction line, and each retracting and unwinding device pulls the balance plate. The pulling force is adjusted as the position of the balance plate changes.

Optionally, the line retracting and unwinding device includes: a line retracting and unwinding device shell, a line retracting and unwinding motor, and a line retracting and unwinding device mainboard. The line retracting and unwinding device mainboard is connected to the line retracting and unwinding motor, and controls the rotation of the line retracting and unwinding motor. Adjust the pulling force of the pulling line.

Optionally, a distance measuring device is provided between each wire retracting and unwinding device and the balance plate to measure the distance between each wire retracting and unwinding device and the balance plate respectively.

Optionally, the distance measuring device includes: an infrared sensor provided on each line retracting and releasing device, and an infrared luminescent element provided on the balance plate.

Optionally, the balance plate is also provided with a balance plate main board and a battery, and the infrared light-emitting element is arranged on the balance plate main board and is powered by the battery.

Optionally, the balance plate also includes a balance plate housing. The balance plate mainboard, together with the infrared light-emitting element and the battery, are arranged in the balance plate housing. The balance plate housing is provided with an infrared-transmitting lens aligned with the infrared light-emitting element.

Optionally, the balance plate is also provided with a ball head rotating shaft, and the balance plate is connected to the headset through the ball head rotating shaft.

Optionally, the ball head of the ball head rotating shaft is connected to a strap holder, the strap holder is provided with a perforation, and the strap of the headset passes through the perforation and is connected to the balance plate.

Optionally, there are four wire retracting and unwinding devices.

Optionally, the cable retracting and releasing device is suspended and installed at different positions above the headset through screws or slide rails.

To sum up, the beneficial effects of the present invention are:

This application uses a suspension method, with the help of a balance plate, a traction line, and a retracting and unwinding device, to provide an auxiliary force for lifting the headset upward, thereby reducing the pressure on the user's head when using the headset, and achieving a head-mounted The device is light to wear, will not cause neck fatigue when used for a long time, and is not limited by the gravity of the headset itself.

Description of the drawings

Figure 1 is a schematic diagram of the overall structure of a head-mounted device weight reduction device provided by an embodiment of the present invention;

Figure 2 is an enlarged view of the area indicated by the circle in Figure 1;

Figure 3 is an exploded view of the cable retracting and releasing device of the headset weight reduction device;

Figure 4 is an exploded view of the balance plate of the headset weight reduction device;

Figure 5 is a schematic diagram of the tensile force analysis of the head-mounted device weight reduction device;

Figure 6 is a schematic diagram of the head mounted device weight-reducing device hanging and stowing away the idle head mounted device;

In the figure: the line retracting and releasing device 100, the line retracting and releasing device upper shell 110, the line retracting and releasing device motor 120, the infrared sensor 130, the line retracting and releasing device main board 140, the line retracting and releasing device lower shell 150, the traction line 200, the balance plate 300, Ball head shaft 310, strap holder 320, perforation 321, balance plate upper shell 330, infrared lens 340, balance plate main board 350, infrared light emitting element 360, battery 370, balance plate main body 380, headset 400, straps 410.

Detailed ways

In order to make the purpose, technical solutions and advantages of the present invention clearer, the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.

In the description of this application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description. It does not indicate or imply that the device or element referred to must have a specific orientation or a specific orientation. construction and operation, and therefore should not be construed as limitations on this application. Furthermore, the terms “first”, “second” and “third” are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of this application, it should be noted that, unless otherwise clearly stated and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it can be a fixed connection or a detachable connection. Connection, or integral connection; 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 be an internal connection between two components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood on a case-by-case basis.

The technical concept of the present invention is to provide an auxiliary force for lifting the head-mounted device upward by means of a suspension, with the help of a balance plate, a traction wire and a retracting and releasing wire device, thereby reducing the impact on the user's head when using the head-mounted device. The headset can be worn easily without pressure, and it will not cause neck fatigue when used for a long time, and it is not limited by the gravity of the headset itself.

Figures 1 to 6 illustrate an embodiment of a weight-reducing device for a head-mounted device of the present application. As shown in FIGS. 1 and 2 , the headset weight reduction device includes: a balance plate 300 , a traction wire 200 and a plurality of retracting and releasing wire devices 100 .

The balance plate 300 is used to fixedly connect the head-mounted device 400. A plurality of cable retracting and releasing devices 100 are suspended and installed at different positions above the head-mounted device 400, and each cable retracting and releasing device 100 pulls the balance plate 300 through the pulling wire 200. , the pulling force of each retracting and unwinding device 100 to pull the balance plate 300 is adjusted as the position of the balance plate 300 changes, so that the resultant pulling force of the balance plate 300 remains vertically upward and slightly less than the gravity of the headset 400, thereby maintaining the stability of the headset. The auxiliary traction force of the device 400 is directed upward to ensure that only a small weight is pressed on the top of the user's head, ensuring wearing comfort.

Through the above-mentioned embodiments of the present application, the multiple retracting and unwinding devices 100 pull the balance plate 300 through the traction wire 200 to provide a vertical upward and constant auxiliary pulling force for the headset 400 connected to the balance plate 300, thereby reducing The pressure on the head when using the head-mounted device 400 allows the user to wear it for a long time without causing fatigue problems. Since the pulling force is controlled by the retracting and unwinding device 100, the problem of limited reduction in the gravity of the head-mounted device 400 is overcome. , the weight loss effect is better.

As shown in FIG. 3 , the wire retracting and releasing device 100 includes: a wire retracting and releasing device shell composed of an upper shell 110 and a lower shell 150 of the wire retracting and releasing device; The wire motor 120 and the main board 140 of the wire retracting and unwinding device. The main board 140 of the wire retracting and releasing device is connected with the wire retracting and unwinding motor 120. By controlling the rotation of the wire retracting and releasing motor 120, the pulling force of the traction wire 200 is adjusted. Specifically, the main board 140 of the line retracting and unwinding device adjusts the torque of the line retracting and unwinding motor 120 according to the positional relationship between the line retracting and unwinding device 100 and the balance plate 300 to adjust the pulling force of each traction line 200 so that the multiple traction lines 200 The resultant force of the traction balance plate 300 is vertically upward to partially offset the gravity of the head mounted device 400 .

In this embodiment, a distance measuring device is disposed between each wire retracting and releasing device 100 and the balance plate 300 to measure the distance between each wire retracting and releasing device 100 and the balance plate 300 respectively.

As shown in the exploded views of Figures 3 and 4, the distance measuring device between the wire retracting and releasing device 100 and the balance plate 300 includes: an infrared sensor 130 (see Figure 3) provided on each wire retracting and releasing device 100, and Infrared light-emitting element 360 on the balance plate 300 (see Figure 4). The infrared light-emitting element 360 of the balance plate 300 emits infrared light, which is received by the infrared sensor 130 of each line retracting and unwinding device 100, thereby obtaining the positional relationship of the balance plate 300 relative to each line retracting and unwinding device 100. In actual use, the entire weight reduction device first needs to be synchronously calibrated, and then the distance to the balance plate 300 can be determined based on the time interval at which the wire retracting and unwinding device 100 receives infrared signals. Theoretically, as long as the distance between the balance plate 300 and the three wire retracting and unwinding devices 100 is known, the position of the balance plate 300 in the three-dimensional space can be determined. In this embodiment, in order to facilitate the adjustment of the traction force, the wire retracting and releasing devices 100 are provided with Four.

In this embodiment, the balance plate 300 is also provided with a balance plate mainboard 350 and a battery 370. The infrared light-emitting element 360 is provided on the balance plate mainboard 350 and is powered by the battery 370 of the balance plate 300 itself, thereby freeing the balance plate 300 from the power supply line. restrain the power supply wire and the traction wire 200 from being entangled and pulled.

In this embodiment, the balance plate 300 also includes a balance plate shell surrounded by a balance plate upper shell 330 and a balance plate main body 380. The balance plate main board 350 together with the infrared light-emitting element 360 and the battery 370 are arranged in the balance plate shell. The balance plate The upper shell 330 is provided with an infrared transparent lens 340 aligned with the infrared light-emitting element 360, which not only protects the infrared light-emitting element 360, but also does not hinder the emission of infrared light. Correspondingly, with reference to Figures 1 and 3, it can be seen that the lower case of the retracting and unwinding device 150 is provided with a hole for the infrared sensor 130 to be exposed, and the hole faces the balance plate 300 when installed, so that the infrared sensor 130 can better receive infrared signals.

Of course, in addition to the infrared ranging method of this embodiment, other ranging methods can also be applied to this application, and will not be described again here. By obtaining the positional relationship between the balance plate 300 and the plurality of retracting and unwinding wire devices 100, the angle between each traction wire 200 and the balance plate 300 can be calculated through a simple geometric relationship, and the retraction and release of the traction wire 200 can be controlled according to the angle relationship. Adjust the pulling force of the traction wire 200 so that the resultant force of the pulling force on the balance plate 300 is vertically upward.

A feasible calculation process is introduced below in conjunction with the tension analysis diagram shown in Figure 5.

In order to ensure that the present invention can achieve the expected weight reduction purpose, it is a very important design point to always ensure that the resultant pulling force of the four traction wires 200 is vertically upward and constant in size. First, according to the previous introduction, when the positions A, B, C, and D of the four wire retracting and releasing devices 100 are known, the balance plate 300 can be monitored in real time according to the distance between each wire retracting and releasing device 100 and the balance plate 300 The spatial position is the point P position in Figure 5. For example, a coordinate system is established with point A as the origin in Figure 5. The positive directions of the PD determines the coordinates of point P, thereby obtaining the angle values required to calculate each force. According to Newton's third law of action and reaction and other great reversal principles, the analysis of the resultant force of the four pulling wires 200 on point P is transformed into the analysis of the pulling forces on point P on the four retracting and releasing wire devices 100 respectively. The four pulling forces The sizes are F _A , F _B , F _C , and F _D respectively, and the directions are from points A, B, C, and D to point P respectively. Each force can be decomposed into three components along the X, Y and Z directions according to the directions defined in the figure. In order to make the final resultant force direction vertical, the sum of the components in the X and Y directions should be 0 respectively. According to the direction of the force components shown in Figure 5, F _AY -F _BY -F _CY +F _DY =0, F _AX +F _BX -F _CX -F _DX =0.

Since this embodiment uses four wire retracting and unwinding devices 100, in order to make each component force finally solvable, additional constraints can be added. Taking the Y direction as an example, F _AY =F _BY , F _CY =F _DY or F _AY can be added =F _CY , F _BY =F _DY or other similar conditions. The following is derived by taking the addition of constraints F _AY = F _BY and F _CY = F _DY as an example. Assume that the value of F _AZ is f, then F _AX and F _AY can be derived according to the trigonometric function relationship, and F _AY = F _BY . According to the trigonometric function relationship, F _BX and F _BZ can be obtained. In the same way, F _C and F _D can be obtained in turn. 3 servings each. The angles required in the calculation process can be derived from the spatial positions of the five points A, B, C, D, and P by calculating the coordinates of point P according to the coordinate calculation process of the above example. Ultimately, the sum of the Z-direction components of the four forces is a function of f, and the sum of the Z-direction components of the four forces should be a certain value set initially, so the forces F _A , F _B , F _C , and F _D are all Computable and unique. In addition, the initial set resultant force should be slightly less than the gravity of the head-mounted device 400. That is, when the head-mounted device 400 is worn and used, the force of the balance plate 300 to lift the head-mounted device 400 is less than the gravity of the head-mounted device 400. This ensures that the head-mounted device 400 is always pressed on the user's head, without causing the user's head to feel like his head is being pulled up, so that the head-mounted device 400 can be worn stably and will not loosen and move upward to cause light leakage problems. Whether the user wears the head mounted device 400 and moves horizontally or moves vertically such as squatting or jumping, the cable retracting and releasing device 100 can calculate and adjust the traction force in real time based on the positional relationship with the balance plate 300 to maintain alignment of the head mounted device. 400 vertical upward traction effect.

When the user stops using the headset 400, the weight reduction device is turned off, and the cable retracting and unwinding device 100 can pull the idle headset 400 to a high place for storage by tightening the pulling wire 200, as shown in Figure 6. For example, after use, the user can take off the headset 400 and conveniently control the weight-reducing device to retract the wire through the remote control, handle, voice command or gesture operation command, so that the total pulling force of the traction wire 200 is greater than the balance plate. 300 and the head-mounted device 400, pull the head-mounted device 400 to the top of the house and hang it for storage; when using it again, use the same method to control the release of the weight-reducing device so that the combined pulling force is less than the balance plate 300 and the head-mounted device. The total gravity of 400 slowly lowers the headset 400 so that it can be worn again.

When the weight reduction device is actually used, the fixed positions of the four wire retracting and unwinding devices 100 can be determined according to the space required for the experience content, and the space surrounded by the wire retracting and releasing devices 100 is the maximum range of activities allowed by the user. The cable retracting and releasing device 100 can be suspended and installed at different positions above the head-mounted device in various ways. For example, the wire retracting and releasing device 100 can be fixedly installed on the roof of the house through screws. Alternatively, the cable retracting and unwinding device 100 can also be installed on the top of the house through a slide rail. When the user needs to adjust the range of movement, the cable retracting and unwinding device 100 slides along the slide rail. When adjusted to a suitable position, the cable retracting and unwinding device 100 is locked relative to the slide rail. To determine the position, this installation method is easier to adjust and has greater applicability. When two or more users use head-mounted devices at the same time, each head-mounted device needs to be equipped with a set of this weight-reducing device. The limited activity ranges of the devices cannot overlap and a certain safe distance should be left between each other to avoid time-consuming use. Situations such as wire twisting and body collision may occur.

As shown in the enlarged view of Figure 2 and the exploded view of Figure 4, in this embodiment, the balance plate 300 is also provided with a ball head rotating shaft 310. The balance plate 300 is connected to the head mounted device 400 through the ball head rotating shaft 310 to allow the head mounted device 400 to The relative balance plate 300 produces twisting and other movements to adapt to the rotation or slight swing of the user's head during use. Moreover, the ball head of the ball head rotating shaft 310 is connected to a strap holder 320. The strap holder 320 is provided with a through hole 321, and the strap 410 of the headset 400 (see the enlarged view of FIG. 2) passes through the through hole 321, thereby balancing the Disk 300 connection.

In actual applications, when the user uses the headset 400, he not only experiences linear motion in the X, Y, and Z directions in space, but also rotates around the Z axis and swings around the X and Y axes. In addition, the retracting and unwinding device 100 will also have slight delays and adjustment errors. In order to prevent the deflection force caused by the above reasons from affecting the user's immersive experience, the balance plate 300 of this embodiment is equipped with a ball head rotating shaft 310, which together with the strap holder 320 forms a ball head universal joint mechanism, which can allow the ball to rotate. The devices below the head rotation axis 310 produce independent rotation and swing movements, thereby adapting to the needs of flexible movement of the head-mounted device 400, so that the weight-reduced head-mounted device 400 is still comfortable and natural to wear.

FIG. 2 shows only one shape of the strap holder 320. In actual application, according to the design of the strap 410 of the existing head-mounted device 400, the strap holder 320 in this embodiment can be adjusted to suit For most existing VR/AR headsets.

The above are only specific embodiments of the present invention. Under the above teachings of the present invention, those skilled in the art can make other improvements or modifications based on the above embodiments. Those skilled in the art should understand that the above specific description is only to better explain the purpose of the present invention, and the protection scope of the present invention should be subject to the protection scope of the claims.

Claims (8)

1. The weight-reducing device of the head-mounted equipment is characterized by comprising a balance disc, a traction wire and a plurality of coiling and uncoiling devices;

the balance disc is used for being fixedly connected with the head-mounted equipment, the plurality of coiling and uncoiling devices are hung and installed at different positions above the head-mounted equipment, each coiling and uncoiling device pulls the balance disc through a pulling wire, and the pulling force of each coiling and uncoiling device pulling the balance disc is adjusted along with the position change of the balance disc;

the take-up and pay-off device comprises: the winding and unwinding device comprises a winding and unwinding device shell, a winding and unwinding motor and a winding and unwinding device main board, wherein the winding and unwinding device main board is connected with the winding and unwinding motor, and the pulling force of the traction wire is adjusted by controlling the rotation of the winding and unwinding motor;

distance measuring devices are arranged between the coiling and uncoiling devices and the balance disc, so that the distance between each coiling and uncoiling device and the balance disc is measured respectively.

2. The headgear weight-reduction device of claim 1, wherein the ranging device comprises: an infrared sensor arranged on each winding and unwinding device and an infrared light-emitting element arranged on the balance disc.

3. The head-mounted device weight-reducing apparatus according to claim 2, wherein the balance disc is further provided with a balance disc main board and a battery, and the infrared light emitting element is provided on the balance disc main board, and is powered by the battery.

4. The head mounted device weight reduction apparatus of claim 3, wherein the balance disc further comprises a balance disc housing, the balance disc motherboard is disposed within the balance disc housing along with the infrared light emitting element and the battery, the balance disc housing is provided with an infrared transmitting lens aligned with the infrared light emitting element.

5. The weight-reducing device for a head-mounted apparatus according to claim 1, wherein the balance disc is further provided with a ball-head rotating shaft, and the balance disc is connected with the head-mounted apparatus through the ball-head rotating shaft.

6. The weight loss device of the head-mounted equipment according to claim 5, wherein the ball head of the ball head rotating shaft is connected with a strap fixer, the strap fixer is provided with a perforation, and the strap of the head-mounted equipment passes through the perforation to be connected with the balance disc.

7. The head-mounted equipment weight-reducing device according to any one of claims 1 to 6, wherein four pay-off and take-up devices are provided.

8. The headgear weight-reduction device according to any one of claims 1-6, wherein the pay-off and take-up device is suspended by screws or rails at different locations over the headgear.