CN206224053U - A kind of virtual reality device - Google Patents

Abstract

The utility model provides a kind of virtual reality device, correspond to including shell body, eyeglass module, in shell body and respectively the focal length setting mechanism of right and left eyes setting and for adjusting two interpupillary adjustment mechanisms of focal length setting mechanism, eyeglass module is arranged at focal length setting mechanism；Interpupillary adjustment mechanism includes light bracing strut, gear and gear fixing component, and gear is fixed on gear fixing component, and light bracing strut is fixed on shell body；Focal length setting mechanism includes transverse gear auxiliary section；Focal length setting mechanism is transversely movable to be installed on light bracing strut, and gear is ratcheting with gear auxiliary section, and one of focal length setting mechanism transverse shifting drives another focal length setting mechanism closer or far from gear.

Description

a virtual reality device

technical field

The utility model relates to the technical field of virtual reality, in particular to a virtual reality device.

Background technique

With the development of science and technology, the application of virtual reality technology in people's production and life is becoming more and more extensive. In particular, the head-mounted virtual reality device is more widely used. The head-mounted virtual reality device is a stereoscopic display that uses people's left and right eyes to obtain information differences and guides users to create a feeling of being in a virtual environment. The display principle is that the left and right eye screens display the images of the left and right eyes respectively, and the human eyes will generate a three-dimensional feeling in the brain after obtaining this information with differences. After wearing the head-mounted virtual reality device, the user can see a virtual world with a strong sense of three-dimensionality. However, for people with vision defects such as myopia or hyperopia, it is impossible to wear glasses while wearing a head-mounted virtual reality device. Therefore, current virtual reality devices generally have a focal length adjustment function to adapt to people with different visions.

At present, the focus adjustment mechanism in a virtual reality device usually occupies a relatively large internal space, is heavy, and has relatively poor focus adjustment accuracy.

Utility model content

In order to solve the above-mentioned technical problems, the utility model provides a virtual reality device that can precisely adjust the interpupillary distance and adjust the focal length.

The utility model is a virtual reality device, comprising an outer shell, a lens module, a focus adjustment mechanism located in the outer shell and corresponding to the left and right eyes, and a pupil distance adjustment mechanism for adjusting the two focus adjustment mechanisms. The lens module is arranged on The focal length adjustment mechanism; the interpupillary distance adjustment mechanism includes an optical axis bracket, a gear and a gear fixing member, the gear is fixed on the gear fixing member, and the optical axis bracket is fixed on the outer shell; the focal length adjustment mechanism includes a lateral gear matching part; the focal length adjustment mechanism can move laterally Installed on the optical axis bracket, the gear meshes with the gear matching part, and one of the focus adjustment mechanisms moves laterally to drive the other focus adjustment mechanism to approach or move away from the gear.

The virtual reality device of the utility model can not only realize the adjustment of the focal length, but also realize the adjustment of the interpupillary distance at the same time, and the interpupillary distance adjustment mechanism is simple, which greatly reduces the weight of the virtual reality device.

Description of drawings

Fig. 1 is a schematic view of the isometric appearance of the virtual reality device of the first embodiment of the present invention;

Fig. 2 is a schematic exploded view of the internal structure of the virtual reality device according to the first embodiment of the present invention;

3 is a schematic diagram of the optical axis support of the interpupillary distance adjustment mechanism in the virtual reality device of the first embodiment of the present invention;

4 is a schematic diagram of the first mounting part of the interpupillary distance adjustment mechanism in the virtual reality device of the first embodiment of the present invention;

Fig. 5 is a schematic diagram of the gear fixing part of the interpupillary distance adjustment mechanism in the virtual reality device of the first embodiment of the present invention;

Fig. 6 is a structural exploded schematic diagram of the focus adjustment mechanism applied to a virtual reality device according to the first embodiment of the present invention;

7 is a schematic diagram of the second embodiment of the present invention applied to the driving wheel and the driven wheel of the focus adjustment mechanism of the virtual reality device;

Fig. 8 is a schematic diagram of another arrangement of the chute in the second embodiment of the present invention;

detailed description

In order to save the internal space of the virtual reality device and improve the accuracy of focus adjustment, the embodiment of the utility model provides a focus adjustment mechanism and a virtual reality device applied to the virtual reality device. In order to make the purpose, technical solutions and advantages of the utility model clearer, the following examples are given to further describe the utility model in detail.

It should be noted that the front and back descriptions mentioned in the embodiments of the present utility model refer to the distance between the virtual reality device and the human eye when it is used. The closer to the human eye is the front end, and the farther away from the human eye is the rear end. . In other words, the forward and backward movement refers to the movement of approaching or moving away relative to the position of human eyes when the virtual reality device is worn on the user's head.

The utility model provides a virtual reality device, comprising an outer shell, a lens module, a focus adjustment mechanism located in the outer shell and corresponding to the left and right eyes, and a pupil distance adjustment mechanism for adjusting the two focus adjustment mechanisms. In the focus adjustment mechanism; the interpupillary distance adjustment mechanism includes an optical axis bracket, a gear and a gear fixing member, the gear is fixed on the gear fixing member, and the optical axis bracket is fixed on the outer shell; the focus adjustment mechanism includes a horizontal gear matching part; the focus adjustment mechanism can move laterally The gear is mounted on the optical axis bracket, the gear meshes with the gear matching part, and one of the focus adjustment mechanisms moves laterally to drive the other focus adjustment mechanism to approach or move away from the gear.

The pupil distance adjustment mechanism and the focal length adjustment mechanism in the embodiment of the present invention will be described in detail below through Embodiment 1 and Embodiment 2

Implementation Mode 1

Please refer to Fig. 1, the virtual reality device provided by the embodiment of the present invention includes: an outer shell (not shown), two focus adjustment mechanisms 1, a lens module 2, a screen assembly (not shown) and a The pupil distance adjustment mechanism 4 is horizontally spaced between two focal length adjustment mechanisms, and two focal length adjustment mechanisms 1 are mounted on the pupil distance adjustment mechanism 4 so that they can move laterally. The screen assembly is fixed on one of the outer casing or the focus adjustment mechanism, and the screen assembly faces the lens module 2 .

In this embodiment, the virtual reality device not only has the function of adjusting the focal length, but also has the function of adjusting the interpupillary distance. The focal length adjustment mechanism is driven by an external force to rotate as a whole to transmit the driving force to the interpupillary distance adjustment mechanism 4, and the interpupillary distance adjustment mechanism 4 then drives the two focal length adjustment mechanisms 1 to move toward or relative to each other as a whole to adjust the lateral distance between the two focal length adjustment mechanisms distance, and then adjust the interpupillary distance of the virtual reality device.

Referring to FIGS. 2 to 5 , in a specific embodiment, the interpupillary distance adjustment mechanism 4 includes: an optical axis support 41 , a gear 42 and a gear fixing member 43 . Wherein, the gear 42 is fixed to the gear fixing member 43, the gear fixing member 43 is fixed to the optical axis bracket 41, and the optical axis bracket 41 is fixed to the outer casing of the virtual reality device (not shown). The focus adjustment mechanism 1 includes a gear matching part, and the gear matching part meshes with the gear 42 .

The optical axis support 41 in this embodiment includes a first optical axis support 411 and a second optical axis support 412 . The first optical axis bracket 411 includes a first mounting part 4111 and two optical axis guide rods 4111 a and 4111 b parallel to the first mounting part 4111 . The second optical axis bracket 412 includes a second mounting part 4121 and two optical axis guide rods 4121a, 4121b parallel mounted on the second mounting part 4121 . The focus adjustment mechanism 1 is mounted on the optical axis bracket 41 so as to be movable laterally, that is, the two focus adjustment mechanisms 1 are sleeved on the first optical axis bracket 411 and the second optical axis bracket 412 respectively.

Wherein, the two ends of the first mounting part 4111 are provided with a shell mounting part A, and the end surface of the shell mounting part A facing the outer shell is provided with a through hole A1 for fixing the interpupillary distance adjustment mechanism and the outer shell. A blind hole (not shown in the figure) is opened on the side of the housing installation part A, and the blind hole is used for installing the optical axis guide rod. Between the two housing installation parts A is a cavity structure B with one side open, and a boss B1 is formed at both ends of the bottom of the cavity, and the installation through hole B11 runs through the boss B1. The structure of the second mounting part 4121 is the same as that of the first mounting part 4111 , and will not be repeated here. In this embodiment, the first mounting part 4111 and the second mounting part 4121 are integrally formed. Apparently, in other embodiments, the first mounting part 4111 and the second mounting part 4121 can also be composed of multiple parts, and are not limited to the shapes shown in this embodiment. The mounting part in this embodiment has a cavity structure with one side open, which saves materials while ensuring the supporting force.

The gear 42 includes a gear portion 421 and a connecting shaft 422 disposed in the middle of the gear 42 and protruding from the middle of the gear.

The gear fixing member 43 includes a carrier 431 and a fixed connector 432 for carrying the gear 42. The carrier 431 includes a fixing part 4311 arranged at two opposite ends, a cavity part 4312 arranged in the middle, and a cavity part 4312 extending from the cavity part 4312. The opposite end step is connected to the connection part 4313 of the fixing part 4311 . A through hole 4311a is opened in the middle of the fixing part 4311. The fixing part 4311 is formed on the same surface as the opening of the cavity part 4312 with two elongated grooves 4311b with an arc-shaped cross section. The two elongated grooves 4311b are located in the through hole Both sides of hole 4311a. The connecting portion 4313 includes a first connecting portion 4313a connecting to the cavity portion 4312 and a second connecting portion 4313b connecting to the fixing portion 4311 . The first connecting portion 4313a is hollow to reduce the weight of the carrier 431 while ensuring the rigidity of the carrier 431 . A stabilizing portion 4312a is formed on the other surface of the bottom of the concave cavity portion 4312, and a shaft receiving hole 4312b is opened at the center of the bottom to pass through the bottom and the stabilizing portion 4312a.

The fixed connector 432 is roughly in the shape of a strip, and two opposite end plate surfaces are formed with mounting and fixing parts 4321 with steps. The mounting and fixing holes (not shown) run through the steps of the fixing and fixing parts 4321, and the steps can strengthen the fixing The rigidity of the connector 432. The stabilizing part 4322 can strengthen the rigidity of the gear fixing member 43, so that the gear 42 mounted on the gear fixing member 43 has better stability during transmission.

The gear 42 is accommodated in the cavity portion 4312 of the carrier 431 , and one end of the connecting shaft 422 of the gear 42 passes through the shaft receiving hole 4312 b of the cavity portion 4312 .

The optical axis guide rods of the first optical axis bracket 411 and the second optical axis bracket 412 are respectively inserted into the grooves of the fixing part 4311 of the carrier 431, so that the first optical axis bracket 411 and the second optical axis bracket 412 are separately arranged on the carrier Two ends of 431 ; the two focus adjustment mechanisms are sleeved on the optical axis guide rods of the first optical axis bracket 411 and the second optical axis bracket 412 respectively.

The fixing part 4311 of the carrier 431 and the fixing part 4321 of the fixing connector 432 are closely fitted and aligned, so that the installation and fixing holes of the fixing connector 432 and the through hole 4311a of the fixing part 4311 of the carrier 431 are aligned and conducted, and then Fasteners (not shown) are fixedly connected so that the other end of the connecting shaft 422 of the gear 42 touches the surface of the fixed connecting member 432 to prevent the gear 42 from coming out of the concave cavity 4312 .

Finally, the optical axis bracket 41 is screwed to the outer casing of the virtual reality device through the installation through hole of the housing installation part A of the optical axis bracket 41 through a screw (not shown), so that the interpupillary distance adjustment mechanism 4 and the focal length can be finally realized. The adjustment mechanism 1, the lens module 2 and the screen assembly 3 are fixed in the outer shell of the virtual reality device.

Obviously, the structure of the carrier 431 and the fixed connector 432 is not limited to the manner shown in this embodiment; the fixed connection method of the carrier 431 and the fixed connector 432 is not limited to the method described in this embodiment, for example, direct adhesive fixing can also be .

All optical axis guide rails and related holes described in this embodiment are preferably arranged coaxially.

The focus adjustment mechanism 1 sleeved on the first optical axis bracket 411 and the second optical axis bracket 412 can slide laterally on the optical axis guide rod. Toggle one of the focal length adjustment mechanisms 1 as a whole, the gear matching part of the focus adjustment mechanism 1 drives the gear 42 to rotate, and the gear 42 transmits the driving force to the gear matching part of the other focus adjustment mechanism 1 and then drives the other focus adjustment mechanism 1 to approach Or away from the lateral movement of the gear 42 to achieve interpupillary distance adjustment.

As shown in FIG. 6 , the focus adjustment mechanism 1 includes a first housing 11 , a driving wheel 12 , a driven wheel 13 and a second housing 14 . Wherein, the first casing 11, the driving wheel 12, the driven wheel 13, and the second casing 14 are all hollow; The accommodation space of the driven wheel 13; the driven wheel 13 is adjacent to the second housing 14, and passes through the driving wheel 12, and one end of the driven wheel 13 is accommodated in the second housing 14, and the other end is accommodated in the first housing 11; The lens module 2 is fixed in the driven wheel 13; the second housing 14 is against the optical axis bracket 41 to prevent the entire focus adjustment mechanism 1 from moving forward and backward; the driving wheel 12 is rotatable relative to the driven wheel 13, and the driven wheel 13 is relatively rotatable to the first Any one of a housing 11, the driving wheel 12 and the second housing 14 is not rotatable but can move forward and backward; Move back and forth in the space, that is, approach the first casing 11 or move away from the first casing 11 .

A first positioning portion 111 is provided inside the top of the first housing 11 , and the first positioning portion 111 of the first housing 11 in this embodiment may be a positioning groove. The bottom of the first housing 11 is provided with the same structure as the top of the first housing. The end surface of the first housing 11 facing the driving wheel 12 is provided with a mounting boss 112 , and the surface of the mounting boss 112 facing the driving wheel 12 is provided with a first mounting hole 1121 .

The inner side of the drive wheel 12 is provided with threads, and the number of threads can be a single group or multiple groups. In this implementation, there are 6 groups of threads.

The top surface of the driven wheel 13 is the first positioning plane 131, the surface of the first positioning plane 131 of the driven wheel 13 is provided with a guide protrusion 1311, and the guide protrusion 1311 is provided with a matching hole 1312, and the matching hole 1312 The extending direction is parallel to the hollow direction of the driven wheel 13 . The same structure as that of the top surface of the driven wheel 13 is provided on the bottom surface of the driven wheel 13 . Threads are provided on the outer ring surface between the two positioning planes of the driven wheel 13, so that the driving wheel 12 can be screwed to the peripheral outer surface of the driven wheel 13, and the number of threads can be a single group or multiple group, which is 6 groups of threads in this implementation. A boss 132 is disposed on an end surface of the driven wheel 13 facing the first housing 11 .

The top and the bottom of the second housing 14 are provided with guide posts 141 and first limiting surfaces 142 . The second housing 14 is provided with a mating boss 143 and an annular body 144 in steps in a direction facing away from the first housing 11 in sequence. The mating bosses 143 and the torus 144 arranged step by step in sequence enclose a cavity (not shown in the figure), which is used to accommodate the driven wheel 13 . The first installation hole 1121 corresponding to the installation boss 112 on the matching boss 143 is provided with a second installation hole 1431, and the threaded connector is threadedly installed on the first installation hole 1121 on the installation boss 112 and the first installation hole 1121 on the matching boss 143. Two mounting holes 1431 fix the first housing 11 relatively to the second housing 14, so that the driving wheel 12, the lens module 2 and the driven wheel 13 can be installed around the first housing 11 and the second housing 14. In the completed containment space. In this embodiment, since the first housing 11 is connected to the second housing 14 through a threaded connection. The second housing 14 extends outward from the end face away from the first housing 11 to form a gear fitting portion 145, and on the upper and lower end faces of the end face away from the first housing 11, four mounting portions 146 are formed. On the mounting portion 146 A through hole 1461 is opened in the transverse direction, and a toothing part 1462 is formed on the surface of the installation part 146 contacting the virtual reality device casing (not shown), and correspondingly, the casing (not shown) is provided with the toothing part. 1462 cooperates with the gear part (not shown in the figure), and the gear part 1462 and the gear part are transverse tooth structures. Obviously, in other embodiments, the number of mounting parts 146 is not limited to four as shown in the figure, and may be more than four or less than four. The two optical axis guide rods of the first optical axis bracket 411 and the second optical axis bracket 412 are respectively inserted into the through holes 1461 of the mounting part 146 of the second housing 14, and the gears on the second housing 14 are matched with the parts. 145 meshes with the gear portion 421 of the gear 42 . In addition, since the mounting portion 146 on the second housing 14 contacts the surface of the outer casing (not shown) of the virtual reality device, a toothing part 1462 is formed, and correspondingly, the outer casing is provided with teeth that cooperate with the toothing part 1462 The matching part (not shown in the figure), so when the two focal length adjustment mechanisms 1 move laterally, the toothing part 1462 meshes with the tooth matching part on the outer shell to provide motion damping, so as to achieve proper damping during the interpupillary distance adjustment process and improve the hand feeling Comfortable, and can ensure the stable position of the focus adjustment mechanism on both sides when not adjusting. The driving wheel 12 is threadedly connected to the outer peripheral surface of the driven wheel 13 with the lens module 2 fixed thereon and exposes the guide protrusion 1311 of the driven wheel 13, and the guide post 141 of the second housing 14 is inserted into the cooperation of the guide protrusion 1311 of the driven wheel 13. Hole 1312, the first housing 11 and the second housing 14 are fixedly connected, and the driving wheel 12 and the driven wheel 13 with the lens module 2 fixed thereon are accommodated in the first housing 11 and the second housing 14. In the receiving space, the guide protrusion 1311 at one end of the driven wheel 13 is accommodated in the first positioning portion 111 of the first housing 11 , and the other end of the driven wheel 13 is adjacent to the first limiting surface 142 of the second housing 14 .

The virtual reality device provided by the embodiment of the utility model can adjust the focal length of the virtual reality device to meet the needs of people with different eyesight. Specifically, when the user uses a virtual reality device, if the set focal length is inconsistent with the user's vision, since the driving wheel 12 is set on the driven wheel 13, the driving wheel 12 is located in the area surrounded by the first casing 11 and the second casing 14. In the storage space, the user can operate the driving wheel 12 to rotate to drive the driven wheel 13 to move forward and backward. Because there is a guiding structure between the driven wheel 13 and the second housing 14, the driven wheel 13 can move forward and backward in a straight line along a preset direction. Wherein, the guiding structure includes a guiding post 141 and a matching portion, the matching portion includes a guiding bump 1311 and a fitting hole 1312 opened in the guiding bump, and the preset direction is consistent with the optical axis direction of the lens module. Obviously, the guiding function can be realized if one of the guide column and the matching part is arranged on the driven wheel, and the other is arranged on the second housing or the first housing.

When the driving wheel 12 is turned, the driving wheel 12 drives the driven wheel 13 to rotate through threads, and the driven wheel 13 moves along the optical axis direction of the lens module 2 in the accommodation space surrounded by the first housing 11 and the second housing 14 Make a straight forward or backward motion. Correspondingly, the guide protrusion 1311 arranged on the first positioning plane 131 on the driven wheel 13 also moves forward or backward in a straight line along the optical axis of the lens module 2 , and at the same time due to the top of the first housing 11 The first positioning part 111 on the top and the limiting plane 142 on the inner peripheral side of the second housing 14 have a limiting effect on the driven wheel 13 so that the driven wheel 13 is located in the accommodation surrounded by the first housing 11 and the second housing 14. Linear movement in space makes the driven wheel 13 approach or move away from one of the first casing 11 and the second casing 14 along the guide column 141 , avoiding the rotation of the driven wheel 13 . In another preferred embodiment, the matching part of the guide structure may be a non-circular guide groove directly formed on the driven wheel, and the guide post 141 is a guide rail whose section corresponds to that of the guide groove. Obviously, one of the guide groove and the guide rail is formed on the driven wheel, and the other is formed on one of the second housing and the first housing.

It can be known from the above that the focal length adjustment of the virtual reality device of the present invention is realized by only rotating the driving wheel 12 to drive the driven wheel 13 to move forward or backward relative to one of the second housing or the first housing, and Further, under the guiding action of the guiding structure, the driven wheel 13 can move linearly back and forth in the same extension direction as the preset optical axis of the lens module 2, so as to achieve the purpose of adjusting the focal length of the VR device.

Apparently, the virtual reality device of the present invention may include a display screen, and the display screen may be fixed on the second casing, or fixed on the outer casing, located on one side of the second casing and facing the lens module. Of course, the virtual reality device can be an adapter adapted to a smart terminal with a display screen, for example: the virtual reality device has a cavity for inserting a smart phone, and the smart phone is inserted into the cavity to provide the virtual reality The device provides a display screen. In short, the driving wheel is between the display screen and the lens module.

Existing VR products adopt the method of adjusting the focal length of the thread pair, that is, the driven wheel is fixed relative to the driving wheel, and the rotation of the driving wheel drives the driven wheel to move forward or backward in a straight line, thereby realizing the focal length adjustment of the virtual reality device. , the adjustment distance required for optical focal length adjustment in this way is relatively large, that is, if the adjustment distance requirement is X, then the minimum adjustment distance of the driving wheel and the driven wheel cannot be less than X, which will cause the volume of the driving wheel 12 In addition, because the driving wheel is between the lens module and the display screen, part of the volume of the driving wheel will block the light from the display screen to the lens module, resulting in a smaller viewing angle of the product.

However, the present invention uses the drive wheel 12 to rotate itself (not move back and forth) to drive the driven wheel 13 to move forward or backward in a straight line along the optical axis of the lens module 2. When the optical adjustment distance requirement is X, only need It is enough to satisfy that the minimum distance of the driven wheel 13 cannot be less than X, but there is no requirement for the distance of the driving wheel 12, and then the minimum distance of the driving wheel 12 can be greatly reduced, and the required volume and weight of the driving wheel 12 can be greatly reduced. The space occupied between the lens module and the display screen is reduced, and more light can be directed to the lens module on both sides of the display screen, which greatly increases the viewing angle of the product, and can reduce the virtual reality while accurately adjusting the focal length. The volume and weight of the device.

It can be seen from the above analysis that the focus adjustment mechanism of the virtual reality device can drive the driven wheel 13 to move forward and backward only through the rotational movement of the driving wheel 12, thereby realizing the focus adjustment of the virtual reality device without the assistance of other structures, which greatly saves the focal length The internal space of the adjustment mechanism reduces the overall weight of the product, and further, the driving wheel 12 in the embodiment of the present invention drives the driven wheel 13 to move forward and backward through a threaded connection, and the stability and accuracy of the transmission are relatively high, suitable for Precision requirements for virtual reality installations.

Implementation mode two

Please refer to FIG. 7 , the difference between this embodiment and Embodiment 1 is that in this embodiment, the driving wheel of the focus adjustment mechanism drives the driven wheel to rotate through the guide post and the chute. In this embodiment, the inner side of the driving wheel 12 is provided with a guide post 121, and the number of the guide post 121 is at least one, and the number of the guide post 121 is preferably set to two in this embodiment. On the outer ring surface between the two positioning planes of the driven wheel 13, corresponding guide posts 121 are provided with corresponding chute 133a, that is: the number of chute 133a corresponds to the number of guide posts 121 at least one, and simultaneously with the guide post 121 The number corresponds to one by one, and in this embodiment, two are preferably set, and the guide post of the driving wheel 12 can be slidably accommodated on the circumferential outer surface of the driven wheel 13 along its corresponding chute 133a. In this embodiment, the chute 133a extends along the direction of the line connecting the front and rear ends of the driven wheel 13 as a whole, and the driving wheel 12 and the driven wheel 13 are connected and driven through the guide post 121 and the chute 133a. Since the driving wheel 12 is sleeved on the driven wheel 13, the driving wheel 12 is located in the accommodation space surrounded by the first casing 11 and the second casing 14, the user can operate the driving wheel 12 to only rotate to drive the driven wheel 13 to move forward and backward. A guiding structure is provided between the driven wheel 13 and the second housing 14, so that the driven wheel 13 can move linearly back and forth along a preset direction, wherein the guiding structure includes a guiding column 141 and a matching portion, and the matching portion includes a guiding protrusion 1311 and The matching hole 1312 is opened in the guide protrusion, and the preset direction is consistent with the optical axis direction of the lens module. The structures of the components in this embodiment that are the same as those in the first embodiment will not be repeated here, please refer to the first embodiment.

When the driving wheel 12 is turned, the driving wheel 12 drives the driven wheel 13 to rotate through the guide column 121 and the chute 133a during the rotation, and also drives the driven wheel 13 to surround the first housing 11 and the second housing 13. In the formed accommodating space, the lens module 2 can move forward or backward linearly along the optical axis direction of the lens module 2, and the driving wheel 12 only rotates but does not move back and forth. Correspondingly, the guide protrusion 1311 arranged on the first positioning plane 131 on the driven wheel 13 also moves forward or backward in a straight line along the optical axis of the lens module 2, so that the guide protrusion 1311 moves along with the driven wheel. 13 along the guide column 141 on the second housing 14 can only make a corresponding forward or backward linear movement. In another preferred embodiment, the guide protrusion 1311 can also be a guide groove, and the guide column 141 can also be a guide rail. At the same time, because the first positioning portion 111 on the top of the first housing 11 and the limiting plane 142 on the inner peripheral side of the second housing 14 have a limiting effect on the driven wheel 13, so that the driven wheel 13 is located between the first housing 11 and the second housing 14. Linear motion is performed in the accommodation space enclosed by the two casings 14 .

It can be seen from the above that the focus adjustment of the virtual reality device of the present invention is realized by only rotating the driving wheel 12 to drive the driven wheel 13 to move forward or backward relative to the screen assembly, and further in the guide structure Under the action of the guide, the driven wheel 13 can move linearly back and forth in the same extension direction as the preset optical axis of the lens module 2, so as to achieve the purpose of adjusting the focal length of the VR device without the assistance of other structures, which greatly saves internal The space is reduced, the weight of the product is reduced, and the stability and accuracy of the transmission are high.

FIG. 8 is another arrangement of the sliding groove 133a in this embodiment, and the sliding groove 133b extends along the outer circumferential direction of the driven wheel 13 as a whole.

Obviously, the screen components in the virtual reality device in the above embodiments are not necessary. For example, when a smart phone is inserted into the virtual reality device as a display screen, the virtual reality device itself does not need to configure a screen component.

Apparently, those skilled in the art can make various changes and modifications to the embodiments of the utility model without departing from the spirit and scope of the utility model. In this way, if these modifications and variations of the utility model fall within the scope of the claims of the utility model and equivalent technologies thereof, the utility model is also intended to include these modifications and variations.

Claims (11)

1. A virtual reality device, characterized in that it comprises an outer shell, a lens module, and a focus adjustment mechanism that is located in the outer shell and corresponds to the left and right eyes respectively and the interpupillary distance adjustment mechanism for adjusting two focus adjustment mechanisms, so The lens module is arranged on the focus adjustment mechanism; The interpupillary distance adjustment mechanism includes an optical axis bracket, a gear and a gear fixing member, the gear is fixed on the gear fixing member, the gear fixing member is fixed on the optical axis bracket, and the optical axis bracket is fixed on the The outer shell; the focus adjustment mechanism includes a transverse gear matching part; the focus adjustment mechanism is mounted on the optical axis bracket for lateral movement, and the gears mesh with the gear matching part, and one of the focus adjustment mechanisms The lateral movement drives the other focus adjustment mechanism to approach or move away from the gear. 2. The virtual reality device according to claim 1, wherein the focus adjustment mechanism comprises a hollow first housing, a second housing, a driving wheel and a driven wheel; wherein, the first housing and The second casing is relatively fixed to form a storage space for the driving wheel, the lens module and the driven wheel, and the driven wheel passes through the driving wheel and is opposite to the first shell. The body is not rotatable, the lens module is fixed in the driven wheel, and one end of the driven wheel is accommodated in the second housing, and the other end is accommodated in the first housing, and the driving wheel is opposite to the The driven wheel is rotatable, and the rotation of the driving wheel drives the driven wheel to approach or move away from the first casing in the receiving space. 3. The virtual reality device according to claim 2, wherein the focus adjustment mechanism includes a guide structure, the guide structure includes a guide post and a matching part, and one of the guide post and the matching part is arranged on the The driven wheel is arranged on the second housing or the first housing. 4. The virtual reality device according to claim 3, wherein the matching portion includes a guide bump and a matching hole opened in the guide bump, and a first housing is provided on the top and/or inside the bottom of the first housing. A positioning part, the top surface and the bottom surface of the driven wheel are the first positioning plane, the guide bump is arranged on the first positioning plane corresponding to the first positioning part, and the guide column is correspondingly arranged on the second positioning part. The top and the bottom of the two housings, the guide posts are inserted into the matching holes, and the guide projections are accommodated in the first positioning portion. 5. The virtual reality device according to any one of claims 2 to 4, characterized in that, the inner side of the driving wheel is provided with threads, and the outer ring surface of the driven wheel is provided with threads that match the driving wheels. thread, so that the driving wheel is threadedly connected to the driven wheel, so that when the driving wheel rotates, the driven wheel is driven to approach or move away from the first housing. 6. The virtual reality device according to any one of claims 2 to 4, wherein a guide post is provided on the inner side of the driving wheel, and the outer ring surface of the driven wheel is provided with a housing corresponding to the guide post. When the driving wheel rotates, the guide post slides along the sliding slot and drives the driven wheel to approach or move away from the first housing. 7. The virtual reality device according to claim 4, characterized in that, the end surface of the first housing facing the driving wheel is provided with a mounting boss, and the mounting boss is provided with a first mounting hole, and the second The housing is provided with matching bosses and toroids step by step in the direction facing away from the first casing, and the stepwisely arranged matching bosses and torus bodies form a cavity, and the corresponding mounting bosses on the matching bosses The first installation hole on the top is provided with a second installation hole, and the focus adjustment mechanism includes a threaded connection piece, and the threaded connection piece is threaded on the first installation hole on the installation boss and the matching boss The first casing is relatively fixed to the second casing through the second mounting hole on the top, and the driving wheel is sleeved on the end of the driven wheel close to one end of the second casing and accommodated In the cavity, the other end of the driven wheel is accommodated in the first housing. 8 . The virtual reality device according to claim 7 , wherein a mounting portion is formed on the end surface of the second housing away from the first housing, and a through hole is opened transversely on the mounting portion. , the optical axis bracket includes a first optical axis bracket and a second optical axis bracket, the first optical axis bracket and the second optical axis bracket respectively include guide rods, and the guide rods are inserted into the first housing The mounting portion enables the focus adjustment mechanism to move laterally. 9. The virtual reality device according to claim 8, characterized in that, the surface of the mounting part contacting the shell is formed with a toothed part in a transverse tooth structure, and the shell is provided with a toothing part that cooperates with the toothed part. Tooth fitting with a transverse tooth structure. 10. The virtual reality device according to claim 8, wherein the first optical axis support further comprises a first mounting part, the second optical axis support further comprises a second mounting part, and the first optical axis The guide rod of the shaft bracket is fixed to the first optical axis bracket, the guide rod of the second optical axis bracket is fixed to the second optical axis bracket, and the first mounting part and the second mounting part are respectively fixed to the The outer casing; the gear fixing member includes a carrier for carrying the gear and a fixed connector fixedly connected to the carrier, a groove is formed on the gear fixing member, and the guide rod is passed through the groove groove. 11. The virtual reality device according to claim 10, characterized in that, the supporting member comprises fixing parts arranged at two opposite ends, a cavity part arranged at the middle part, and steps from two opposite ends of the cavity part connected to the fixing part The connecting part; the middle part of the fixed part is provided with a through hole, and the groove is formed laterally on the same surface as the opening of the cavity part, and the groove is located on both sides of the through hole; the cavity A stable part is formed on the other side of the bottom of the part, and the center of the bottom is provided with a shaft receiving hole that runs through the bottom and the stable part; the fixed connecting part is formed with a step-mounted fixing part on its two opposite end plate surfaces, and the installation The fixing hole runs through the step of the mounting and fixing part; the gear is accommodated in the cavity of the carrier, and the connecting shaft of the gear passes through the shaft receiving hole of the cavity; the The optical axis guide rods of the first optical axis bracket and the second optical axis bracket are respectively inserted into the grooves of the fixing part of the carrier, so that the first optical axis bracket and the second optical axis bracket The shaft brackets are respectively arranged at both ends of the bearing part; the end surface of the connecting shaft of the gear is top and bottom surface of the fixed connection part.