CN106959515B - Head-mounted display equipment - Google Patents

Abstract

The invention discloses a head-mounted display device, comprising: two lens barrel assemblies arranged side by side with the same structure; each lens barrel assembly includes a corresponding lens unit and a display screen unit, and the lens barrel assemblies are respectively installed with The first guide transmission mechanism and the second guide transmission mechanism; the first guide transmission mechanism is threadedly connected with the first screw rod, and the rotation of the first screw rod can make the first guide transmission mechanism move and drive the lens barrel assembly to move relative to the other lens barrel assembly; The two guide transmission mechanisms are threadedly connected with the second screw rod, and the rotation of the second screw rod can move the second guide transmission mechanism and adjust the distance between the lens unit and the display screen unit. The head-mounted display device in the embodiment of the present invention realizes that each lens barrel assembly can adjust the interpupillary distance and the viewing distance independently by installing the first guide transmission mechanism and the second guide transmission mechanism on each lens barrel assembly, which improves the adjustment Accuracy and stability in use.

Description

A head-mounted display device

technical field

The present invention relates to the technical field of display devices, in particular to a head-mounted display device.

Background technique

Virtual reality technology is a computer simulation system that can create and experience a virtual world. It uses a computer to generate a simulated environment. Immerse yourself in that environment. The head-mounted display device utilizes the parallax principle of the two eyes, puts the left and right images into the two eyes respectively through the lens, and then produces a three-dimensional visual effect with a sense of space. Since the position of the center point of the interpupillary distance of different users is not fixed relative to the head-mounted display device, and the viewing distance of the eyes of the same user may be inconsistent, the current head-mounted display device products on the market are in the process of realizing the user's personalized interpupillary distance and viewing distance. In terms of distance adjustment, only the left and right lens barrels can be adjusted to the same distance. In the prior art, when the pupillary distance is adjusted, the two lens barrels move in reverse synchronously, and the displacement of each adjustment is equal. For example, if the left lens barrel moves 3 mm to the left, the right mirror The tubes move 3 mm to the right synchronously and reversely. In the prior art, when the viewing distance is adjusted, the lenses in the two lens tubes move synchronously with the distance from the display screen. The display is synchronously moved closer or farther away by 3 mm. This adjustment method will result in low precision, poor flexibility, etc., which cannot meet the needs of some users, and the user experience is not good.

Contents of the invention

The invention provides a head-mounted display device with flexible operation and use, high adjustment precision and strong structural stability.

In order to achieve the above object, the technical solution of the present invention is achieved in that:

The present invention provides a head-mounted display device, comprising: two lens barrel assemblies arranged side by side and having the same structure;

Each lens barrel assembly includes a corresponding lens unit and a display screen unit, and a first guide transmission mechanism and a second guide transmission mechanism are respectively installed on the lens barrel assembly;

The first guide transmission mechanism is threadedly connected to a first screw rod, and the rotation of the first screw rod can make the first guide transmission mechanism move along the axial direction of the first screw rod and drive the lens barrel assembly to move relative to the other lens barrel assembly, thereby realizing interpupillary distance adjustment;

The second guide transmission mechanism is threadedly connected with a second screw rod, and the rotation of the second screw rod can make the second guide transmission mechanism move axially along the second screw rod to drive the display screen unit to move, so as to adjust the distance between the lens unit and the display screen unit.

The beneficial effects of the present invention are: in the head-mounted display device provided by the present invention, a first guide transmission mechanism and a second guide transmission mechanism are correspondingly installed for each lens barrel assembly, and the first guide transmission mechanism is connected to the first screw rod. When the screw rotates, it drives the first guide transmission mechanism to move axially along the first screw and then drives the lens barrel assembly to move relative to the other lens barrel assembly, which not only realizes the individual adjustment of the interpupillary distance of each lens barrel assembly but also the adjustment of the left and right lens barrel assemblies The distance can be inconsistent, which improves the adjustment flexibility and adjustment accuracy. The second guide transmission mechanism is connected with a second screw rod, and when the second screw rod rotates, it drives the second guide transmission mechanism to move axially along the second screw rod, and then drives the display screen unit to move to adjust the distance between the display screen unit and the lens unit, which not only realizes Each lens barrel assembly has separate pupillary distance and visual distance adjustment, and realizes different pupillary distance and visual distance adjustments for the left and right lens barrels, which meets the adjustment needs of users with different interpupillary distances and diopters of both eyes, and improves adjustment flexibility. , to optimize the user experience. At the same time, the head-mounted display device of this embodiment has a simple structure and improves the stability of use.

Description of drawings

Fig. 1 is the front view of the local structure of Embodiment 1 of the present invention;

Fig. 2 is the rear view of the partial structure of Embodiment 1 of the present invention;

Fig. 3 is a side view of a partial structure of Embodiment 1 of the present invention;

FIG. 4 is a schematic diagram of an exploded structure of Embodiment 1 of the present invention;

Fig. 5 is a partial structural schematic diagram of Embodiment 2 of the present invention.

Detailed ways

The design concept of the present invention is: to solve the problems that both eyes can only adjust the same distance and poor adjustment flexibility when adjusting the pupillary distance and viewing distance of the head-mounted display device in the prior art, the embodiment of the present invention provides a head-mounted display device. equipment, each lens barrel assembly of the head-mounted display device is individually connected and installed with the first guide transmission mechanism and the second guide transmission mechanism, and each lens barrel assembly can independently adjust the viewing distance and interpupillary distance, thus satisfying the The adjustment needs of users with different or different diopters optimize the user experience. At the same time, the structure of the device is simple, which ensures the stability of use.

The current head-mounted display devices also have some solutions for setting separate adjustment mechanisms for diopter and interpupillary distance. For example, based on the cooperation of the push rack and the slide rack, and relying on the left and right push of the adjustment push button, the interpupillary distance or the sight distance can be adjusted. But the shortcoming of this existing technology is: when adjusting the interpupillary distance, rely on the adjustment push button, the operation mode is inflexible, and the adjustment accuracy is low by using the push rack and the sliding rack, and the adjustment push button fluctuates up and down following the rack during operation. affect the viewing experience of users. In addition, the design of the push button of the interpupillary distance adjustment mechanism requires a large hole in the casing to facilitate the left and right movement of the push button, which not only affects the appearance of the product, but also easily enters dust. Therefore, in the process of manually adjusting the pupillary distance or visual distance in the prior art, the adjustment accuracy is low, the operation flexibility is poor, there are many parts, the structure is complicated, the assembly is difficult, and the cost is high.

The head-mounted display device according to the embodiment of the present invention will be introduced below, and the technical means adopted in this embodiment to solve the problems in the prior art will be described in detail.

Here, we first explain the meanings of pupillary distance and visual distance. Unless otherwise specified, pupillary distance refers to the distance between the pupils of the two eyes, and visual distance refers to the distance from the lens to the display screen after the user wears the head-mounted display device. distance.

Embodiment one

The structure of the head-mounted display device of this embodiment will be described in detail with reference to FIGS. 1 to 4 . This embodiment only describes the devices in the head-mounted display device that are closely related to the improvement of the present invention. It can be understood that the head-mounted display device also includes other devices such as main body brackets, casings, cables, circuit boards, etc. These devices The details of the design and working principle can be referred to the prior art, and will not be repeated here.

Referring to FIG. 1, the head-mounted display device of this embodiment includes two lens barrel assemblies arranged side by side and having the same structure (when in use, the two lens barrel assemblies correspond to the user's left eye and right eye respectively);

1 and 2, in the device provided by the first embodiment, each lens barrel assembly includes a corresponding lens unit 13 and a display screen unit 12, and the first guide transmission mechanism 3 and the second guide transmission mechanism 3 are respectively installed on the lens barrel assembly. Two guiding transmission mechanism 4;

The first guide transmission mechanism 3 is threadedly connected with the first screw rod 1, the rotation of the first screw rod 1 can make the first guide transmission mechanism 3 move axially along the first screw rod 1 and drive the lens barrel assembly to move relative to another lens barrel assembly, for example , when the other lens barrel component remains stationary, the currently adjusted lens barrel component moves to approach or move away from the other lens barrel component, so as to realize interpupillary distance adjustment;

The second guide transmission mechanism 4 is threadedly connected with the second screw rod 2, the rotation of the second screw rod 2 can make the second guide transmission mechanism 4 move along the axial direction of the second screw rod 2 and drive the display screen unit 12 to move, for example, when the second screw rod 2 is installed When the lens bracket of the lens unit remains stationary, the display bracket mounted with the display unit moves to approach or move away from the lens unit, thereby adjusting the distance between the lens unit 13 and the display unit 12 (ie, viewing distance).

It should be noted that each lens barrel assembly of the head-mounted display device in this embodiment includes an interpupillary distance adjustment mechanism and a viewing distance adjustment mechanism. In practical applications, users can choose to adjust the interpupillary distance or the viewing distance adjust. For example, if the user wants to adjust the interpupillary distance but does not want to adjust the viewing distance during use, the first screw can be rotated independently, and then the first screw rotates to make the first guide transmission mechanism move axially along the first screw and drive the lens barrel assembly The interpupillary distance can be adjusted by moving relative to another lens barrel assembly. Or, if the user wants to adjust the viewing distance but does not want to adjust the interpupillary distance during use, the user can rotate the second screw rod, and the rotation of the second screw rod will make the second guide transmission mechanism move along the axial direction of the second screw rod and drive the display unit to move to complete Sight adjustment.

Referring to Fig. 1 and Fig. 2, in this embodiment, the first guide transmission mechanism 3 includes: a first guide member 31 threadedly connected with the first screw rod 1 and a first transmission member 32 fitted in cooperation with the first guide member 31; The second guide transmission mechanism 4 includes: a second guide 41 threaded with the second screw 2 and a second transmission 42 fitted with the second guide 41; the rotation of the first screw 1 can make the first guide 31 along the As the first screw 1 moves axially and can drive the second transmission member 42 to move synchronously relative to the second guide 41, the rotation of the second screw 2 can make the second guide 41 move axially along the second screw 2 and drive the second guide 41. A transmission member 32 moves synchronously relative to the first guide member 31 . The two sets of guiding transmission mechanisms are flexible and reliable, which not only improves the adjustment accuracy, but also ensures the stability of the operation process.

Referring to Fig. 4, in this embodiment, the first guide member 31 is a first guide rail, and the first guide rail is provided with a first internally threaded hole 310 that cooperates with the first screw rod 1, and is connected with the head-mounted display device housing. The first limiting portion 311 of the first installation frame 5 and the first groove 312 located on both sides of the first guide rail and installed in cooperation with the first transmission member 32 (see FIG. 3 );

The second guide 41 is a second guide rail, and the second guide rail is provided with a second internal thread hole 410 that cooperates with the second screw rod 2, and a second internal thread hole 410 that cooperates with the second installation frame 6 on the housing of the head-mounted display device. The limiting part 411 and the second groove 412 located on both sides of the second guide rail and installed in cooperation with the second transmission member 42; after installation, the first guide rail and the second guide rail are relatively vertical, so that the first guide rail and the second guide rail The guiding directions of the guide pieces are different. Referring to FIG. 1 , the guiding direction of the first guiding piece is the left-right direction, and the guiding direction of the second guiding piece is the front-back direction. The limit part is set on the guide rail, and the limit part and the limit groove on the installation frame (multiple triangular ribs are set on the side of the groove, which improves the strength and bearing capacity of the limit groove) work together to play a role in the guide rail. The movement stroke is limited to ensure the controllable stroke and adjustment stability when the pupil distance or viewing distance is adjusted. In addition, grooves are provided on the guide rail, which is not only convenient for installation with transmission parts (such as rollers or sliders), for the transmission parts to slide or roll in the grooves, but also reduces friction and improves the flexibility of adjustment. It should be noted that, in this embodiment, the structures of the first guiding transmission mechanism 3 and the second guiding transmission mechanism 4 are completely the same, but the installation directions and positions of the two are different during installation. Specifically, the first guiding transmission mechanism is installed above the lens barrel assembly, the second guiding transmission mechanism is installed below the lens barrel assembly, and the guiding direction of the first guiding transmission mechanism and the guiding direction of the second guiding transmission mechanism are perpendicular to each other. As shown in FIG. 4 , the guiding direction of the first guiding transmission mechanism is the front-rear direction, the guiding direction of the second guiding transmission mechanism is the left-right direction, and the guiding directions are perpendicular to each other.

The reason why this embodiment adopts the first guide transmission mechanism and the second guide mechanism with the same structure is to facilitate installation. Because the two structures are the same, there is no need to distinguish them during installation, which reduces the difficulty of installation. The second is to save the cost of the product. Compared with two parts with different production or procurement structures, the cost of this method in this embodiment is obviously lower. Finally, the guide transmission mechanism adopts the same structure design, which also facilitates the replacement of parts after damage.

As shown in Figure 2 and Figure 4, the first transmission member 32 is a roller structure, including: a plurality of rollers 320 and a first connecting member 321,

The first connecting piece 321 is provided with a first connecting column; the roller 320 is locked on the first connecting column by a screw; the specific connection method can be that the center of the roller is opened, and the screw passes through the hole in the center of the roller and screwed into the first connecting column. In the threaded hole on the connecting column, the roller can rotate relative to the screw. Or, the roller is fixed on the first connecting column through bolts and nuts, or the roller is fixed on the first connecting column through a clip spring; it should be noted that the connection method between the roller and the first connecting column can be selected according to actual needs , there is no limitation on this, and other connection methods can also be used in addition to the connection method of this embodiment, as long as the rollers are fixed on the connecting columns.

The structure of the second transmission member 42 is the same as that of the first transmission member 32 . That is to say, as shown in FIG. 3 , the second transmission member 42 also adopts a roller structure, and the roller structure includes: a plurality of second rollers 420 and a second connecting member 421 .

It should be noted that in this embodiment, each guide transmission mechanism includes four rollers, and the four rollers are evenly distributed on the two sides of the guide rail, so as to improve the flexibility in adjusting the interpupillary distance and the viewing distance. Specifically, as shown in Figures 1 and 2, two of the four rollers 320 included in the first guide transmission mechanism 3 cooperate with the first groove 312 on the left side of the first guide rail, and the other two rollers 320 cooperate with the first groove 312 on the left side of the first guide rail. The first groove 312 on the right side of the guide rail cooperates, and two of the four rollers 420 included in the second guide transmission mechanism 4 cooperate with the second groove 412 on the front side of the first guide rail, and the other two rollers 420 cooperate with the first guide rail. The second groove 412 on the rear side fits in.

As shown in Figure 3, the roller 320 of the first transmission member matches the first groove 312 on the first guide rail; as shown in Figure 4, the roller 420 of the second transmission member matches the second groove on the second guide rail. 412 match. The roller and the groove are used to adjust the viewing distance or interpupillary distance based on rolling friction, which improves the flexibility of adjustment and saves effort during use.

The display screen bracket 7 of the lens barrel assembly is provided with a first boss 74 and a second boss 71, and the first transmission member 32 and the second transmission member 42 are respectively connected to the first boss 74 and the second boss 71 by screws. in the mounting holes on the Specifically, the first transmission member 32 is connected to the first boss 74 through the first connecting member 321, and the second transmission member 42 is connected to the second boss 71 through the second connecting member 421 to realize the first transmission. The connection between the component or the second transmission component and the display screen bracket 7 of the lens barrel assembly.

It should be noted that the first boss is arranged above the display screen bracket, and the second boss is arranged under the display screen bracket. The structures of the first boss and the second boss can be the same or different, and the structure of the boss can be Design and adjust according to the position of the screw hole on the first connecting piece and the position of the screw hole on the second connecting piece. Referring to FIG. 3 , the first connecting member 321 connecting the roller 320 and the second connecting member 421 connecting the roller 420 are respectively connected to the first boss 74 and the second boss 71 of the display bracket 7 to realize the first transmission member 32 The synchronous movement with the second transmission member 42 improves the flexibility in adjusting the interpupillary distance or the viewing distance.

Referring to Fig. 4, one end of the first screw rod 1 is sleeved with the first fixing member 53, and inserted into the first fixing ring 52 on the first installation frame 5 after passing through the first internal thread hole 310 on the first guide rail, and then the position is limited Install the first screw rod 1; the first mounting frame 5 is provided with a first limiting groove 51, and the first limiting part 311 on the first guide rail is matched with the first limiting groove 51; through the first limiting part and the first limiting groove 51 The cooperation of a limit groove realizes the limit of the first guide transmission mechanism, so that the first guide rail keeps moving left and right on the first installation frame. The stability of the movement is guaranteed.

Similarly, after one end of the second screw rod 2 is sleeved on the second fixing member 63, it is inserted into the second fixing ring 62 on the second mounting frame 6 after passing through the second internal thread hole 410 on the second guide rail, and then the position is limited. Install the second screw rod 2; the second mounting frame 6 is provided with a second limiting groove 61, and the second limiting part 411 on the second guide rail is matched with the second limiting groove 61, so that the second guide rail is installed in the second Maintain a straight forward and backward motion on the frame.

The other end of the first screw 1 is connected to the first adjusting knob 10 , and the other end of the second screw 2 is connected to the second adjusting knob 11 . As shown in FIG. 2 , in this embodiment, the first adjustment knob 10 is arranged on one side of the head-mounted display device in the left-right direction, and the second adjustment knob 11 is arranged on one side of the head-mounted display device in the up-down direction. The design can achieve a relatively small relief hole on the head-mounted display device, ensuring the aesthetics of the product, and at the same time, it also reduces the occurrence of dust entering the product through the relief hole of the adjustment knob, which may affect the use of the product.

The first fixing member 53 and the second fixing member 63 are respectively fixed on the first installation frame 5 and the second installation frame 6 by screws.

As shown in Figure 4, each lens barrel assembly includes: display screen support 7 and lens support 8, and the peripheral surface of lens support 8 is provided with a plurality of third connectors 81, three third connections are shown in Figure 4 81, the angles between the three third connecting pieces 81 are all 120 degrees. The embodiment of the present invention does not limit the number of the third connecting parts, which can be selected and set according to actual application requirements. In addition, in this embodiment, what the third connecting piece adopts is a pin, and in other embodiments of the present invention, the third connecting piece can also use other feasible parts, as long as it can ensure that the lens bracket and the display screen bracket are connected through the third connecting piece. Just get up.

Referring to FIG. 3 and FIG. 4 , the display screen support 7 is provided with a sliding limit hole 72 matched with the third connecting piece 81 , and the lens support 8 is mounted on the display screen support 7 through the third connecting piece 81 .

Referring to FIG. 4 , the sliding limit hole 72 includes two sections, which are respectively an inclined guide part 720 for installing the third connecting piece 81, connected with the guide part 720 and used for adjusting the distance between the lens unit and the display screen unit. bit part 721.

It should be noted here that the inclined design of the guide portion facilitates sliding the third connecting member 81 (such as a pin mounted on the lens holder or a connecting column integrally formed with the lens holder) into the limiting hole. During installation, the lens holder is first screwed into the guide part, and then screwed into the limit part. The limiting part is a section of hole extending along the front and back direction of the display screen bracket, and the function of the limiting part is to adjust the distance between the lens unit and the display screen unit, that is, to limit the movement stroke when the viewing distance is adjusted.

In addition, the foregoing is an illustration of a connection method between the lens holder and the display screen holder. In other embodiments of the present invention, the connection between the lens holder and the display screen holder can also be realized in the following manner:

A plurality of connecting holes are opened on the lens holder, and a sliding limiting hole matched with the connecting hole is opened on the display screen holder, and the lens holder passes through the sliding limiting hole and extends into a connecting hole on the lens holder. A fourth connecting member (such as a pin) is installed on the display screen bracket.

The difference between the sliding limit hole in this connection method and the sliding limit hole in the aforementioned connection method is that there is no need to set an inclined guide part, and only a hole for adjusting the distance between the lens unit and the display screen unit is required. The limit part is enough.

As shown in FIGS. 1 and 4 , the head-mounted display device further includes: a pair of guide shafts 9 connected to the housing of the head-mounted display device, and the lens holder 8 also includes a corresponding guide shaft connecting portion 82;

After the lens holder 8 and the display screen holder 7 are installed, the guide shafts 9 are respectively installed on the guide shaft connecting parts 82 . Preferably, both the screw rod and the guide shaft are made of metal to ensure structural strength.

It should be noted that in this embodiment, by setting two guide shafts that are parallel to each other and corresponding in position, it can ensure that the left and right lens barrel assemblies move in the same plane when the pupillary distance is adjusted, which improves the stability of the pupillary distance adjustment and optimizes the user experience.

Referring to Fig. 1 and Fig. 2, mounting holes 73 for hot-melt mounting nuts are arranged around the display bracket 7, and after the nuts are installed in the mounting holes 73, they are connected to the fasteners on the display unit 12 (not shown in the figure) connect.

In this embodiment, the first installation frame and the second installation frame are respectively fixedly connected to the casing of the head-mounted display device, that is to say, when adjusting the interpupillary distance and the viewing distance, the first installation frame 5 and the second installation frame 5 The mounting frames 6 are all fixed. One or more of the following methods can be used for fixed connection:

In the first way, the first installation frame and the second installation frame are respectively fixed on the shell of the head-mounted display device through screw connection;

In the second way, the first installation frame and the second installation frame are fastened to the housing of the head-mounted display device through buckles respectively;

In a third manner, the first installation frame and the second installation frame are integrally formed with the casing of the head-mounted display device.

In the actual application process, a specific connection method can be selected according to the product requirements and the design requirements of the housing of the head-mounted display device, without limitation.

It should be noted that the above description is mainly based on the structure of one lens barrel assembly (that is, the left lens barrel assembly). For further details, refer to the relevant description above.

The installation process of the head-mounted display device in this embodiment is roughly as follows:

1) First, assemble the two display screen units 12 on the left and right display screen brackets 7 respectively;

2) Then, the left and right lens units are respectively assembled on the corresponding lens holders 8;

3) Next, install the roller structure of the first transmission part and the roller structure of the second transmission part on the two bosses of the left and right display screen brackets 7 through the cooperation of the screws and the connecting parts respectively;

4) Install a pair of guide shafts 9 into the guide shaft installation parts 82 on the left and right lens holders 8;

5) Assemble the first guide rail to the roller structure on the left side, the end of the first guide rail slides between the two rows of rollers 320 during installation; similarly, assemble the first guide rail to the roller mechanism 32 on the right side;

6) screw the first screw rod 1 into the threaded hole 310 of the first guide rail, and then install the first screw rod 1 on the first mounting frame 5 through the first fixing member 53 and the first fixing ring 52; The first screw rod on the right is screwed into the first internally threaded hole of the guide rail on the right, and then the first screw rod on the right is installed on the first installation frame;

7) Assemble the second guide rail onto the roller mechanism 42, and then assemble the second guide rail on the right side onto the roller mechanism 42 on the right side;

8) Finally, screw the second screw rod 2 into the second internally threaded hole 410 of the second guide rail; install the second screw rod 2 on the second installation frame 6 through the second fixing ring 62 and the second fixing member 63 . Similarly, the second screw rod on the right is screwed into the second internally threaded hole of the guide rail on the right, and then the second screw rod is installed on the second mounting frame 6 .

It can be seen from the above that the assembly process of the head-mounted display device in this embodiment can be assembled in the order of first up, then down, and first left, then right. It can be understood that the above-mentioned assembly process is only illustrative, and some assembly steps can be adjusted in the actual application process, which is not limited thereto.

The working process of this head-mounted display device of the present embodiment is:

Firstly, the interpupillary distance adjustment process of the left lens barrel assembly is introduced. The user turns the first adjustment knob 10 to drive the first screw 1 to rotate, and through the screw transmission, the first guide transmission mechanism 3 fixedly connected with the first screw 1 moves left and right along the axis of the first screw 1, and the first guide The movement of the transmission mechanism 3 drives the left display bracket 7 to move left and right, and the movement of the left display bracket 7 drives the second transmission member 42 to move, that is, the driving roller structure slides left and right in the second groove 412 of the second guide rail, so that the left lens barrel The assembly moves left and right along the guide shaft 9 to realize the adjustment of the left lens barrel assembly relative to the right lens barrel assembly, that is, the adjustment of the interpupillary distance. It can be understood that when the interpupillary distance is adjusted, the cooperation of the limiting portion on the first guide rail, the fixing member on the first installation frame, and the fixing ring together define the movement stroke.

In addition, it should be emphasized that in this embodiment, the rotation of the screw is controlled by the knob, and each pitch of the screw is adjusted by a certain distance, thereby improving the adjustment accuracy of the interpupillary distance or the viewing distance.

Next, the working process of the sight distance adjustment of the left lens barrel assembly will be introduced. The user toggles the second adjustment knob 11 to drive the second screw 2 to rotate, and through screw transmission, the second guide transmission mechanism 4 fixedly connected with the second screw 2 moves back and forth along the second screw 2 axially, and the second guide The movement of the transmission mechanism 4 drives the left display screen support 7 to move back and forth, and the movement of the left display screen support 7 drives the first transmission member 32 to move, that is, the driving roller structure slides back and forth in the first groove 312 of the first guide rail, realizing the left display. The adjustment of the screen unit relative to the left lens unit, that is, the adjustment of the viewing distance. It can be understood that when the viewing distance is adjusted, the movement stroke, that is, the range of viewing distance adjustment, is jointly limited by the limiting part on the second guide rail, the fixing piece and the fixing ring on the second installation frame.

The eye-pupillary and viewing distance adjustments of the head-mounted display device in the embodiment of the present invention are realized through the helical transmission of the screw. The adjustment knob rotates one turn, and the guide rail moves one thread pitch, so a more precise adjustment can be realized.

It should be noted that the foregoing is mainly an explanation of the sight distance and pupillary distance adjustment work process of a lens barrel assembly (that is, the left lens barrel assembly). The structures are the same, so the working process is also the same, so I won’t go into details here, and you can refer to the above description of the working process of the lens barrel assembly on the left.

It can be seen from the above that the head-mounted display device of the embodiment of the present invention can realize the adjustment of the pupillary distance and the visual distance independently of each other in terms of the adjustment function of the pupillary distance and the visual distance of the two eyes. Adjustment needs of users with asymmetric axes. The adjustment of pupil distance and visual distance adopts screw transmission, which has high adjustment accuracy. Every time the adjustment knob rotates one circle, the guide rail moves a distance of one pitch, and the roller structure drives the lens barrel assembly to move a distance of one pitch, so precise adjustment can be realized. When adjusting, the lens barrel is carried out inside the product shell, without driving the shell. The transmission design and the adjustment knob design for pupil distance and sight distance adjustment make it unnecessary to open a large hole on the housing for the adjustment knob, but only need to open a round hole that matches the axis of the knob, which does not affect the appearance design of the product, and It is not easy to get in dust. Both the viewing distance and the interpupillary distance are adjusted through the knob, which is flexible and convenient to operate, and the user experience is good. The overall pupillary distance and viewing distance are adjusted, the structure is simple and compact, and there are few parts, so that the weight of the product can be reduced, the assembly is easy, the manufacturing and assembly costs are low, and the market competitiveness of the product is improved.

Embodiment two

The difference from the first embodiment is that the transmission part in this embodiment adopts a slider, and the design of the groove on the corresponding guide rail is modified so that the shape of the groove on the guide rail matches the shape of the slider. Specifically, in this embodiment, the first guide member is a first guide rail, and the first guide rail is provided with a first internal thread hole that cooperates with the first screw rod, a first stopper that cooperates with the first installation frame, and a first stopper that cooperates with the first mounting frame. a first groove for the transmission part;

The second guide member is a second guide rail, and the second guide rail is provided with a second internal thread hole that cooperates with the second screw rod, a second stopper that cooperates with the second installation frame, and a second recess that cooperates with the second transmission member. Groove; that is, the structure of the guide here is the same as that of the foregoing embodiment except that the shapes of the first groove and the second groove are different from those of the foregoing embodiment.

The first transmission member is a first T-shaped slider, and the upper and lower sides of the first T-shaped slider are provided with first arc-shaped protrusions,

The second transmission member is a second T-shaped slider, as shown in Figure 5, the upper and lower sides of the T-shaped slider are provided with a second arc-shaped protrusion;

As shown in FIG. 5 , a schematic diagram of the first guide transmission mechanism installed above the left lens barrel assembly is shown. In FIG. 5 , the first groove of the first guide member 31 matches the first transmission member 32 . Both the first groove and the second groove of the second transmission member are T-shaped grooves, so as to adapt to the shape of the T-shaped slider.

The first arc-shaped protrusion is in contact with the surface of the first groove; the second arc-shaped protrusion is in contact with the surface of the second groove, and the lens barrel assembly passes the line friction between the T-shaped slider and the surface of the T-shaped groove of the guide rail achieve relative motion.

In this embodiment, by setting arc-shaped protrusions on the upper and lower surfaces of the T-shaped slider, the contact area with the groove on the guide rail is reduced (that is, the surface contact between the T-shaped slider and the groove of the guide rail is changed into a line contact. ), thereby reducing friction and improving the flexibility of interpupillary distance or viewing distance adjustment. In other embodiments of the present invention, a plurality of convex points can also be set on the upper and lower surfaces of the T-shaped slider, and the line contact between the T-shaped slider and the groove surface of the guide rail can be changed to a point contact, so as to further reduce friction .

In addition, the first T-shaped slider and the second T-shaped slider are respectively fixedly connected to the first boss 74 of the display screen bracket 7 of the lens barrel assembly. This is to ensure that the first guide transmission mechanism and the second transmission member move synchronously when adjusting the interpupillary distance, or ensure that the second guide transmission member and the first transmission member move synchronously when adjusting the viewing distance, thereby improving the flexibility of adjustment.

In addition, in this embodiment, the first guide is also connected to the first screw, the first screw is connected to the first adjustment knob, the second guide is also connected to the second screw, and the second screw is connected to the second adjustment knob, The casing of the head-mounted display device is provided with a first relief hole and a second relief hole, and the first adjustment knob and the second adjustment knob respectively expose the surface of the casing through the first relief hole and the second relief hole.

Preferably, the first relief hole is arranged on the left and right sides of the casing of the head-mounted display device, and the second relief hole is arranged under the casing of the head-mounted display device, which reduces the probability of dust entering the product. Alternatively, the second relief holes may also be provided on the left and right sides of the housing to conform to the user's operating habits. When the second relief hole is arranged on the left and right sides of the housing, the other end of the second screw rod is connected to the first bevel gear, and the first bevel gear meshes with the second bevel gear on the third screw rod, and the second adjusting knob is connected to the second bevel gear on the third screw rod. The third screw is connected, so that two bevel gears are used for meshing transmission to realize the adjustment of the viewing distance. That is, by adding bevel gears to change the transmission angle, the installation position of the second adjustment knob of the head-mounted display device in this embodiment can have multiple options, which meets user needs.

To sum up, the head-mounted display device according to the embodiment of the present invention is different from the prior art in the transmission mechanism for adjusting the interpupillary distance and the viewing distance. Structurally: the sight distance adjustment structure of the present invention mainly utilizes the external thread of the screw rod and the internal thread on the guide rail matched with it, and realizes the forward and backward linear motion of a single guide rail through screw transmission; the cooperation between two sets of mutually perpendicular guide rails and the roller structure, Realize the forward and backward movement of a single lens barrel assembly to complete the adjustment of the viewing distance. The interpupillary distance adjustment structure mainly uses the external thread on the screw and the internal thread on the matching guide rail, and uses the screw drive to realize the left and right linear motion of a single guide rail; uses the cooperation of two sets of mutually perpendicular guide rails and the roller mechanism to realize a single lens barrel. left and right movement to complete the interpupillary distance adjustment. In terms of function: the pupillary distance and visual distance of the left and right lens barrel components can be adjusted completely independently, and the adjustment accuracy is high. According to the diopter and pupillary distance data of the eyes provided by the user, it can be adjusted before wearing the headset Well, there is no need for the user to wear the device to slowly adjust the interpupillary distance and visual distance of the eyes according to the applicable conditions of the eyes, and the user experience is better. At the same time, the structure is simple, which improves the stability of use.

The above descriptions are only specific implementations of the present invention. Under the above teaching of the present invention, those skilled in the art can make other improvements or modifications on the basis of the above embodiments. Those skilled in the art should understand that the above specific description is only to better explain the object of the present invention, and the protection scope of the present invention shall be determined by the protection scope of the claims.

Claims (11)

1. A head-mounted display device, comprising: two lens cone assemblies which are arranged side by side and have the same structure;

each lens cone component comprises a lens unit and a display screen unit which are correspondingly arranged, and a first guide transmission mechanism and a second guide transmission mechanism are respectively arranged on each lens cone component;

the first guide transmission mechanism is in threaded connection with a first screw rod, and the rotation of the first screw rod can enable the first guide transmission mechanism to move axially along the first screw rod and drive the lens cone component to move relative to the other lens cone component, so that the pupil distance is adjusted;

the second guide transmission mechanism is in threaded connection with a second screw rod, and the second screw rod rotates to enable the second guide transmission mechanism to move axially along the second screw rod so as to drive the display screen unit to move, so that the distance between the lens unit and the display screen unit is adjusted;

the first guiding transmission mechanism comprises: the first guide piece is in threaded connection with the first screw rod, and the first transmission piece is installed in a matched mode with the first guide piece;

the second guiding transmission mechanism comprises: the second guide piece is in threaded connection with the second screw rod, and the second transmission piece is installed in a matched mode with the second guide piece;

the first screw rod can rotate to enable the first guide piece to move along the axial direction of the first screw rod and drive the second transmission piece to move synchronously relative to the second guide piece,

the second screw rod rotates to enable the second guide piece to move axially along the second screw rod and drive the first transmission piece to move synchronously relative to the first guide piece.

2. The head-mounted display device of claim 1,

the first guide piece is a first guide rail, a first internal threaded hole matched with the first screw rod is formed in the first guide rail, a first limiting part matched with a first mounting frame on a head-mounted display device shell is mounted on the first guide rail, and first grooves are formed in two sides of the first guide rail and matched with the first transmission piece;

the second guide piece is a second guide rail, a second internal threaded hole matched with the second screw rod is formed in the second guide rail, a second limiting part matched with a second mounting frame on the head-mounted display device shell is mounted, and second grooves which are located on two sides of the second guide rail and matched with the second transmission piece are mounted;

after the installation, the first guide rail is relatively vertical to the second guide rail.

3. The head-mounted display device of claim 2,

the first transmission piece is the gyro wheel structure, includes: a plurality of rollers and a first connecting piece,

the first connecting piece is provided with a first connecting column; the roller is locked on the first connecting column through a screw; or the first connecting column is fixed on the first connecting column through the matching of a bolt and a nut, or the first connecting column is fixed on the first connecting column through a clamp spring;

the second transmission piece has the same structure as the first transmission piece and comprises a second connecting piece with the same structure as the first connecting piece;

the roller of the first transmission piece is matched with the first groove on the first guide rail; the roller of the second transmission piece is matched with the second groove on the second guide rail;

the first connecting piece and the second connecting piece are respectively connected to a display screen support of the lens cone assembly, and a display screen unit is installed on the display screen support.

4. The head-mounted display device of claim 1,

the first guide piece is a first guide rail, a first internal threaded hole matched with the first screw rod, a first limiting part matched with a first mounting frame on the head-mounted display equipment shell and a first groove matched with the first transmission piece are formed in the first guide rail;

the second guide piece is a second guide rail, a second internal threaded hole matched with the second screw rod, a second limiting part matched with a second mounting frame on the head-mounted display equipment shell and a second groove matched with the second transmission piece are formed in the second guide rail;

the first transmission piece is a first T-shaped sliding block, the upper surface and the lower surface of the first T-shaped sliding block are provided with first circular arc bulges,

the second transmission part is a second T-shaped sliding block, and second circular arc-shaped bulges are arranged on the upper surface and the lower surface of the second T-shaped sliding block;

the first groove and the second groove are both T-shaped grooves;

the first arc-shaped bulge is in contact with the surface of the first groove;

the second circular arc-shaped bulge is in contact with the surface of the second groove;

the first T-shaped sliding block and the second T-shaped sliding block are fixedly connected to a display screen support of the lens cone component respectively.

5. The head-mounted display device of claim 1,

a first boss and a second boss are arranged on a display screen bracket of the lens cone component,

the first transmission piece is connected to the mounting hole in the first boss through a screw, and the second transmission piece is connected to the mounting hole in the second boss through a screw.

6. The head-mounted display device of claim 2 or 4,

one end of the first screw rod is sleeved with a first fixing piece, penetrates through a first internal threaded hole in the first guide rail and then is inserted into a first fixing ring in the first mounting frame, and the first screw rod is mounted in a limiting manner;

a first limiting groove is formed in the first mounting frame, and a first limiting part on the first guide rail is matched with the first limiting groove;

one end of the second screw rod is sleeved with a second fixing piece, penetrates through a second internal threaded hole in the second guide rail and then is inserted into a second fixing ring in the second mounting frame, and the second screw rod is mounted in a limiting mode;

a second limiting groove is formed in the second mounting frame, and a second limiting part on the second guide rail is matched with the second limiting groove;

the first fixing piece and the second fixing piece are fixed on the first mounting frame and the second mounting frame through screws respectively.

7. The head-mounted display device of claim 1,

the lens barrel assembly includes: a display screen bracket and a lens bracket,

a lens unit mounted to the lens carrier;

a plurality of third connecting pieces are uniformly distributed on the circumferential surface of the lens support;

the display screen bracket is provided with a sliding limit hole matched with the third connecting piece,

the lens support is installed on the display screen support through the cooperation of the third connecting piece and the sliding limiting hole.

8. The head-mounted display device of claim 7, wherein the third connector is a pin mounted to a circumferential surface of a lens holder, or the third connector is a connection post integrally formed with the lens holder,

when the lens support passes through the cooperation installation of third connecting piece and the spacing hole of slip is in on the display screen support, the spacing hole of slip includes: and the limiting part is connected with the guide part and is used for adjusting the distance between the lens unit and the display screen unit.

9. The head-mounted display device of claim 7, further comprising: a pair of guide shafts are arranged on the guide shaft,

the lens support also comprises a guide shaft connecting part which is correspondingly arranged;

after the lens support and the display screen support are installed, the guide shaft is connected with the guide shaft connecting part and is fixed on a shell of the head-mounted display equipment;

when the display screen support moves, the lens support is driven to move axially along the guide shaft.

10. The head-mounted display device of claim 1,

the other end of the first screw rod is connected with a first adjusting knob, the other end of the second screw rod is connected with a second adjusting knob,

be provided with first hole and the second hole of stepping down on the wear-type display device casing, first adjust knob and second adjust knob expose the casing surface through first hole and the second hole of stepping down respectively.

11. The head-mounted display device of claim 10,

the first abdicating holes are arranged at the left side and the right side of the head-mounted display device shell,

the second abdicating hole is arranged below the head-mounted display device shell, or the second abdicating hole is arranged at the left side and the right side of the head-mounted display device shell,

when the second abdicating holes are formed in the left side and the right side of the head-mounted display device shell, the other end of the second screw rod is connected with a first bevel gear, the first bevel gear is meshed with a second bevel gear on the third screw rod, and the second adjusting knob is connected with the third screw rod.

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