Adjusting mechanism of head-mounted display equipment, head-mounted display equipment and display method of head-mounted display equipment

Abstract

The invention discloses an adjusting mechanism of head-mounted display equipment, the head-mounted display equipment and a display method of the head-mounted display equipment, and aims to improve the interactivity of the head-mounted display equipment in different scenes and improve the operation convenience of a user. The adjusting mechanism is installed on a shell of the head-mounted display equipment, the adjusting mechanism comprises an adjusting rod and a transmission assembly, the adjusting rod has a first state and a second state, and the adjusting rod is used for being disconnected with the transmission assembly in the first state and triggering an electric device of the head-mounted display equipment to send a signal when receiving pressing or rotating operation; the adjusting rod is used for being in transmission connection with the transmission assembly in the second state and transmitting power to the transmission assembly when receiving the rotating operation. The transmission assembly is used for receiving the power transmitted by the adjusting rod and driving a display assembly of the head-mounted display device to carry out myopia or hyperopia adjustment.

Description

Technical Field

[0001] The present application relates to the technical field of electronic equipment, and in particular to an adjustment mechanism of a head-mounted display device, a head-mounted display device and a display method thereof. Background Art

[0002] The metaverse is a virtual world built with digital technology that maps or transcends the real world and can interact with the real world. Head-mounted display devices are the entrance to the metaverse. Users can use head-mounted display devices to interact with the virtual world to meet entertainment and work needs. Common head-mounted display devices include augmented reality (AR) devices or virtual reality (VR) devices.

[0003] At present, head-mounted display devices have the problem of gesture interaction failure in some scenarios, which means that users need to use peripherals to interact with the device, and the interactivity is relatively poor. In addition, for myopic or hyperopic users, although some head-mounted display devices are equipped with vision correction functions, users are often required to take off the device for adjustment. In this state, users cannot determine whether the effect of the adjustment is compatible with their myopia or hyperopia, resulting in long operation time and cumbersome operation. Summary of the invention

[0004] The present application provides an adjustment mechanism for a head-mounted display device, a head-mounted display device and a display method thereof, so as to improve the interactivity of the head-mounted display device in different scenarios and improve the operation convenience of the user.

[0005] In the first aspect, the present application provides an adjustment mechanism for a head-mounted display device, which can be installed on the housing of the head-mounted display device and is used to adjust the head-mounted display device when receiving user operations. The adjustment mechanism includes an adjustable rod and a transmission assembly, the adjustment rod has a first state and a second state, the adjustment rod can be used to disconnect from the transmission assembly in the first state, and trigger the electrical device in the head-mounted display device to send a signal when receiving a pressing or rotating operation; and the adjustment rod can be used to be connected to the transmission assembly in the second state, and transmit power to the transmission assembly when receiving a rotating operation. The transmission assembly can be used to receive the power transmitted by the adjustment rod in the second state, and drive the display assembly of the head-mounted display device to adjust myopia or hyperopia through the power. With the adjustment mechanism, the user can interact with the head-mounted display device without the help of a handle or gestures during the process of wearing the head-mounted display device, but can control the head-mounted display device through the adjustment mechanism, so that even in a scene without a handle or dim light, the user can still use the head-mounted display device, thereby effectively improving the interactivity of the head-mounted display device in different scenes and improving the user's operating convenience.

[0006] In some embodiments, an adjustment button may be provided at one end of the adjustment rod to facilitate user operation. Parameters such as the diameter and thickness of the adjustment button may be designed based on ergonomics to reduce the difficulty of operation for the user.

[0007] In some embodiments, the adjustment rod may include a first rod body and a second rod body, the diameter of the first rod body is larger than the diameter of the second rod body, one end of the first rod body may be used to set the above-mentioned adjustment button, and the other end surface may have a groove; one end of the second rod body may be assembled in the groove of the first rod body, thereby realizing a fixed connection between the first rod body and the second rod body. This split structure design can reduce the difficulty of assembling the adjustment rod and the transmission assembly, and because the radial size of the second rod body is relatively small, the transmission assembly can also be matched with the second rod body with a relatively small size, thereby helping to reduce the overall size of the adjustment mechanism.

[0008] In some embodiments, the adjustment mechanism may further include a limit assembly, the limit assembly having an elastic arm, the end of the elastic arm having a protrusion arranged toward the peripheral side of the adjustment rod. The peripheral side of the adjustment rod may be provided with a first limit groove and a second limit groove, the first limit groove and the second limit groove are arranged at intervals along the axial direction of the adjustment rod, the adjustment rod may slide relative to the limit assembly, and the adjustment rod may be in a first state when the protrusion of the elastic arm is limited in the first limit groove, and in a second state when the limit protrusion of the elastic arm is limited in the second limit groove, so that the adjustment rod is reliably maintained in the first state or the second state by using the limit assembly.

[0009] In addition, the limiting assembly may further include a fixing frame and a limiting cover, the fixing frame and the limiting cover may be fixedly connected to form a limiting hole, and the adjusting rod is slidably arranged in the limiting hole. The elastic arm may be fixed to the fixing frame or the limiting cover, and the side of the elastic member provided with the protrusion may be arranged toward the limiting hole, so that when the adjusting rod slides in the limiting hole, the protrusion can switch between the first limiting groove and the second limiting groove of the adjusting rod.

[0010] In some embodiments, the first limiting groove and the second limiting groove may be separated by a limiting step, and the two side end faces of the limiting step along the axial direction of the adjusting rod may respectively have a chamfered structure to reduce the risk of the protrusion of the elastic arm getting stuck in the first limiting groove or the second limiting groove, so that the adjusting rod can smoothly switch between the first state and the second state.

[0011] In some embodiments, the axial length of the first limiting groove along the adjusting rod may be greater than the axial length of the protrusion of the elastic arm along the adjusting rod, so that when the adjusting rod is in the first state, the adjusting rod can produce a small displacement under the action of pressing, thereby facilitating triggering the electrical components in the head-mounted display device.

[0012] In some embodiments, the adjustment mechanism may include another form of a limiting assembly, which may include a spring sheet and a rotating member, the spring sheet may be fixed to a structural member in the shell, and the spring sheet has a first receiving groove and a second receiving groove arranged at intervals; the rotating member may include a rotating part and a first rotating arm and a second rotating arm connected to the rotating part, the rotating part may be a structural member rotatably arranged in the shell of the head-mounted display device, the first rotating arm has a first limiting column, the first limiting column can be switched between the first receiving groove and the second receiving groove with the rotation of the rotating part, and the second rotating arm has a second limiting column. The peripheral side of the adjustment rod has a clamping groove, the clamping groove can be used to clamp the second limiting column, the adjustment rod can drive the rotating member to rotate through the second limiting column when sliding, and the adjustment rod is in the first state when the first limiting column is limited in the first receiving groove, and the adjustment rod is in the second state when the second limiting column is limited in the second receiving groove, so that the adjustment rod can be reliably limited to the first state or the second state by the limiting assembly.

[0013] Exemplarily, the rotating member may be located between the spring sheet and the adjusting rod. In this case, the first limiting column and the second limiting column may be located on opposite sides of the rotating portion, so as to cooperate with the corresponding structures of the spring sheet and the adjusting rod.

[0014] In some embodiments, the first receiving groove and the second receiving groove are separated by a limiting protrusion, and the limiting protrusion may have an arcuate surface to reduce the risk of the first limiting column getting stuck when moving from the first receiving groove to the second receiving groove, or from the second receiving groove to the second receiving groove.

[0015] In some embodiments, the width of the first receiving groove may be greater than the diameter of the first limiting column, so that when the adjustment rod is in the first state, the adjustment rod can produce a small displacement under the action of pressing, thereby facilitating triggering the electrical components in the head-mounted display device.

[0016] In some embodiments, the transmission assembly may include a housing and a plurality of gear pairs that are sequentially connected in transmission, wherein at least one gear pair is installed in the housing, and along the power transmission direction, the first gear pair of the multi-stage gear pair can be used to be connected in transmission with the adjustment rod in an engaged state, and disconnected from the adjustment rod in a non-engaged state, and the last gear pair in the multi-stage gear pair can be used to be connected in transmission with the display assembly of the head-mounted display device to facilitate driving the display assembly for myopia or hyperopia adjustment.

[0017] In some embodiments, the first-stage gear pair may include a first gear and a second gear, the first gear and the second gear may be sleeved on the adjustment rod respectively, the first gear may be fixedly connected to the adjustment rod, the second gear may be loosely matched with the adjustment rod, and the second gear may be rotatably assembled in the housing, and the first gear and the second gear may be end gears respectively. When the adjustment rod is in the first state, the first gear and the second gear are spaced apart, thereby disconnecting the transmission chain of the transmission assembly; when the adjustment rod is in the second state, the first gear and the second gear are meshed, thereby transmitting power from the first gear to the second gear.

[0018] In addition, in order to smoothly connect the first gear and the second gear, the tooth tops of the gear teeth of the first gear can be transitioned by an arc surface. Similarly, the tooth tops of the gear teeth of the second gear can also be transitioned by an arc surface.

[0019] In some embodiments, the last gear pair is located outside the casing, and the last gear pair may include a first bevel gear and a second bevel gear. The first bevel gear may be transmission-connected to the previous gear pair of the last gear pair, and the second bevel gear may be fixedly connected to the display assembly, thereby transmitting power from the adjusting rod to the display assembly in sequence.

[0020] In some embodiments, in addition to the first-stage gear pair and the last-stage gear pair, the gear assembly may also include a second-stage gear pair and a third-stage gear pair. The second-stage gear pair is a cylindrical gear pair, and the second-stage gear pair includes a third gear and a fourth gear. The third gear and the fourth gear can be rotatably assembled in the housing, and the third gear is fixedly connected to the second gear; the third-stage gear pair is a cylindrical gear pair, and the third-stage gear pair includes a fifth gear and a sixth gear. The fifth gear and the sixth gear can be rotatably assembled in the housing, and the fifth gear is connected to the fourth gear through a universal joint transmission, and the sixth gear is driven by the driving wheel of the last-stage gear pair. By connecting the fourth gear and the fifth gear through a universal joint, variable-angle power transmission can be achieved between the fourth gear and the fifth gear, reducing the requirements for the setting position of the starting and ending points of the power transmission.

[0021] In some embodiments, the transmission assembly may further include a gear rod, which may extend from inside the housing to outside the housing, and the gear rod is slidably connected to the housing, and the gear rod may rotate relative to the housing, and the portion of the gear rod located inside the housing has a special-shaped cross section. The sixth gear may be slidably assembled on the portion of the gear rod located inside the housing, and the cross-sectional shape of the gear hole of the sixth gear is the same as the cross-sectional shape of the special-shaped cross section of the gear rod, so that the sixth gear can drive the gear rod to rotate, and also release the axial freedom of the gear rod, so that the gear rod can move along the axial direction of the gear rod. The driving wheel of the last-stage gear pair is fixed to the portion of the gear rod located outside the housing, so that it can rotate or slide synchronously with the gear rod.

[0022] In some embodiments, the box body may include a main body, a first gear cover, a second gear cover and a third gear cover, the first gear cover and the second gear cover are respectively covered on two opposite sides of the main body, the third gear cover is arranged adjacent to the first gear cover and the second gear cover, and the third gear cover is respectively fixedly connected to the main body, the first gear cover and the second gear cover.

[0023] In some other embodiments, in addition to the first-stage gear pair and the last-stage gear pair, the gear assembly may also include a second-stage gear pair, the second-stage gear pair may be a cylindrical gear pair, the second-stage gear pair includes a third gear and a fourth gear, the third gear and the fourth gear can be rotatably assembled on the housing respectively, the third gear is fixedly connected to the second gear, and the fourth gear is connected to the driving wheel of the last-stage gear pair through a universal joint transmission, so that variable-angle power transmission can be achieved between the fourth gear and the last-stage gear pair, thereby reducing the requirements for the setting positions of the starting and ending points of the power transmission.

[0024] In the above scheme, the universal joint may include a first universal joint fork, a second universal joint fork and a cross shaft, the cross shaft is respectively assembled on the first universal joint fork and the second universal joint fork, the first universal joint fork is fixedly connected to the fourth gear, and the second universal joint fork has a sleeve at one end away from the cross shaft, and the inner hole of the sleeve can be a special-shaped hole. One end of the gear rod can be slidably assembled on the sleeve, and the cross-sectional shape of the gear rod is the same as the cross-sectional shape of the special-shaped hole, so that the universal joint can drive the gear rod to rotate, and also release the axial freedom of the gear rod, so that the gear rod can move along the axial direction of the gear rod. The other end of the gear rod is fixedly connected to the driving wheel of the last gear pair, so that the driving wheel of the last gear pair can rotate or slide synchronously with the gear rod.

[0025] In the second aspect, the present application also provides a head-mounted display device, which includes a shell, a display component, and an adjustment mechanism in any embodiment of the first aspect, the display component and the adjustment mechanism are installed in the shell, and there are two display components and two adjustment mechanisms, respectively, and the two display components are arranged in a one-to-one correspondence with the two adjustment mechanisms. Among them, the two display components are arranged along the first direction, and each adjustment mechanism can be arranged on the side of the corresponding display component facing away from the other display component. The adjustment rod of the adjustment mechanism is slidably assembled in the shell, and the adjustment rod has a first end exposed outside the shell. When the first end of the adjustment rod moves close to the shell, the adjustment rod is in a first state, and when the first end of the adjustment rod moves away from the shell, the adjustment rod is in a second state. In the present application, when the adjustment rod is in the first state, the adjustment rod can be switched from the first state to the second state by applying a pulling force to the adjustment rod; conversely, when the adjustment rod is in the second state, the adjustment rod can be switched from the second state to the first state by applying a pushing force to the adjustment button.

[0026] In some embodiments, the display assembly may include a lens barrel, a display screen, a first lens, and a lens holder. The display screen may be fixed in the lens barrel, the first lens is carried by the lens holder, the lens holder may be slidably disposed in the lens barrel along the axial direction of the lens barrel, and the lens holder is in transmission connection with the transmission assembly. The lens holder may be used to slide in a direction close to or away from the display screen under the drive of the transmission assembly, thereby driving the first lens to slide synchronously. Based on this design, when a user wears a head-mounted display device, the focal length of the user's eyes can be adjusted by adjusting the distance between the first lens and the user's eyes, so as to adjust the focal length of the user's eyes with different degrees of myopia or hyperopia to the retina, that is, the display assembly realizes the myopia or hyperopia adjustment function.

[0027] In one implementation, the first lens is a concave lens, in which case the first lens can be used as a myopic lens, so that the display assembly can correct the vision of a myopic user. In another implementation, the first lens is a convex lens, in which case the first lens can be used as a hyperopic lens, so that the display assembly can correct the vision of a hyperopic user.

[0028] In some embodiments, the lens barrel may include a first barrel and a second barrel, the first barrel may be used to accommodate a display screen, a first lens and a lens holder, and the first barrel is provided with a slide rail extending in the axial direction, and a sliding pin may be provided on the peripheral side of the lens holder, and the sliding pin is slidably provided on the slide rail. The second barrel is sleeved on the outer side of the first barrel, and the inner wall of the second barrel may be provided with a spiral slide groove, and the end of the sliding pin may extend from the slide rail and be assembled in the slide groove; the second barrel is connected to the transmission component in a transmission manner, and the second barrel can rotate under the drive of the transmission component. When the second barrel rotates, the end of the sliding pin can slide in the slide groove of the second barrel, and there is a spiral upward or spiral downward movement trend, and due to the limitation of the slide rail of the first barrel, the lens holder is driven by the second barrel and only has an axial displacement, thereby realizing the position adjustment of the lens holder and the first lens carried thereon.

[0029] In some embodiments, the lens assembly may further include a second lens, which may be fixed in the first barrel and located on the side of the first lens facing away from the display screen. The second lens may be used to correct the angle of the light source of the lens of the user's eye so that the user can clearly see the display screen.

[0030] In some embodiments, the housing may include a frame and a cover plate fixed in the frame, the cover plate may be provided with a first guide rail and a second guide rail, the first guide rail and the second guide rail may be arranged along a first direction, and the first guide rail and the second guide rail may extend along the first direction respectively. One of the two display components may be slidably mounted on the first guide rail, and the other display component may be slidably mounted on the second guide rail. This design allows the distance between the two display components to be adjustable, so that the head-mounted display device can realize the pupil distance adjustment function, meet the use needs of user groups with different pupil distances, and improve the user experience.

[0031] In some embodiments, the electrical device of the head mounted display device may include a button, a first support arm may be disposed in the housing, an end of the first support arm is disposed near the second end of the adjustment rod located in the housing, and the button may be fixed to a side of the first support arm facing the second end of the adjustment rod. The adjustment rod may be used to trigger the button when receiving a pressing operation in the first state, so that a pressing signal is emitted when the button is triggered.

[0032] In some embodiments, the electrical device of the head mounted display device may further include a sensor, a second support arm may be disposed in the housing, an end of the second support arm is disposed near the peripheral side of the adjustment rod, and the sensor may be disposed at the end of the second support arm to detect the rotation signal of the adjustment rod. Alternatively, it can be understood that the adjustment rod may trigger the sensor to send a rotation signal when rotating.

[0033] Exemplarily, the outer wall of the adjusting rod may include a plurality of regions distributed along the circumferential direction, and the surface roughness of the plurality of regions is different from each other. The side of the sensor facing the adjusting rod includes a light source and a photosensitive area, the light source can be used to emit light to the adjusting rod so that the light is reflected on the outer wall of the adjusting rod, and the photosensitive area can be used to receive the reflected light. Since the roughness of each region of the outer wall of the adjusting rod is different, the degree of reflection of the light is also different. When the light is reflected by different regions of the adjusting rod, the reflected light received by the photosensitive area is also different, so the area on the adjusting rod that reflects the light can be determined based on the reflected light received by the photosensitive area, and then the rotation angle of the adjusting rod can be calculated.

[0034] In some embodiments, the head mounted display device may further include a processor, which may be used to:

[0035] When determining that the head mounted display device is in a state where the handle is not connected, receiving a signal sent by the electrical device when it is triggered by the adjustment mechanism;

[0036] A corresponding control instruction is generated according to the type of the signal, and the control instruction is used to control the display content of the display interface of the head-mounted display device.

[0037] In the present application, the user can interact with the head-mounted display device without the help of a handle or through gestures, but can instead control the head-mounted display device through an adjustment mechanism. In this way, the head-mounted display device can still be used even in a scene without a handle or in dim light, thereby effectively improving the interactivity of the head-mounted display device in different scenarios and improving the user's operational convenience.

[0038] In some embodiments, the processor may also be used to:

[0039] Before receiving the signal sent by the electrical device when being triggered by the adjustment rod, the cursor in the display interface is controlled to point to the interactive control in the display interface according to the user's head movement or eye movement, thereby improving the effectiveness of the control instruction.

[0040] In some embodiments, the type of signal may include a compression signal, and the processor may be configured to:

[0041] A first control instruction is generated according to the pressing signal, and the first control instruction can control a cursor in the display interface to click an interactive control in the display interface.

[0042] In some embodiments, the type of signal may include a rotation signal, and the processor may be used to:

[0043] A second control instruction is generated according to the rotation signal, and the second control instruction can control the display interface to slide.

[0044] In some embodiments, the processor may also be used to:

[0045] When a rotation signal is received, the state of the adjusting lever is determined, and when the adjusting lever is in the first state, a second control instruction is generated according to the rotation signal; that is, the adjusting lever can trigger the electrical device and cause it to send a valid rotation signal after receiving a rotation operation in the first state. Although the adjusting lever can also trigger the electrical device and cause it to send a rotation signal after receiving a rotation operation in the second state, the rotation signal in this state is invalid, and the processor may not process the signal to avoid misoperation.

[0046] In a third aspect, the present application also provides a display method for a head mounted display device, the display method comprising:

[0047] When it is determined that the head mounted display device is in a state where the handle is not connected, receiving a signal sent by an electrical device of the head mounted display device when being triggered by an adjustment mechanism of the head mounted display device;

[0048] A corresponding control instruction is generated according to the type of the signal, and the control instruction is used to control the display content of the display interface of the head-mounted display device.

[0049] By applying the display method provided in the present application, the user can interact with the head-mounted display device without the help of a handle or through gestures, but can control the head-mounted display device through an adjustment mechanism. In this way, the head-mounted display device can still be used even in a scene without a handle or in dim light, thereby effectively improving the interactivity of the head-mounted display device in different scenes and improving the user's operating convenience.

[0050] In some embodiments, the display method may further include:

[0051] Before receiving the signal sent by the electrical device when being triggered by the adjustment rod, the cursor in the display interface is controlled to point to the interactive control in the display interface according to the user's head movement or eye movement, thereby improving the effectiveness of the control instruction.

[0052] In some embodiments, the type of signal may include a pressing signal, and the display method may specifically include:

[0053] A first control instruction is generated according to the pressing signal, and the first control instruction can control a cursor in the display interface to click an interactive control in the display interface.

[0054] In some embodiments, the type of signal may include a rotation signal, and the display method may specifically include:

[0055] A second control instruction is generated according to the rotation signal, and the second control instruction can control the display interface to slide. BRIEF DESCRIPTION OF THE DRAWINGS

[0056] Figure 1 A schematic diagram of the structure of a head mounted display device provided in an embodiment of the present application;

[0057] Figure 2 A schematic diagram of the structure of a display module provided in an embodiment of the present application;

[0058] Figure 3 A schematic diagram of the structure of a first display component provided in an embodiment of the present application;

[0059] Figure 4 A partially exploded schematic diagram of a first display assembly provided in an embodiment of the present application;

[0060] Figure 5 A schematic cross-sectional structure diagram of a first display assembly provided in an embodiment of the present application;

[0061] Figure 6 A schematic diagram of a partial structure of a display module provided in an embodiment of the present application;

[0062] Figure 7 for Figure 6 A partial cross-sectional structural schematic diagram of a display module shown in ;

[0063] Figure 8 A schematic diagram of the structure of a first adjustment mechanism in a state provided in an embodiment of the present application;

[0064] Fig. 9 A schematic diagram of the structure of a first adjustment mechanism in another state provided in an embodiment of the present application;

[0065] Fig.10 for Figure 8 The structural schematic diagram of the universal joint shown in ;

[0066] Fig.11 A schematic diagram of the partial structural decomposition of the lens barrel and the transmission assembly provided in an embodiment of the present application;

[0067] Fig.12 A partially exploded schematic diagram of a transmission assembly provided in an embodiment of the present application;

[0068] Fig.13 A schematic diagram of the structure of another first adjustment mechanism provided in an embodiment of the present application;

[0069] Fig.14 for Fig.13 A partial structural exploded schematic diagram of the first adjustment mechanism shown in ;

[0070] Fig.15 for Fig.13 A schematic diagram of a partial structure of the first regulating mechanism described in ;

[0071] Fig.16 for Fig.13 A schematic diagram of a partial structure of a limiting component of the first adjusting mechanism in one state as shown in FIG.

[0072] Fig.17 for Fig.13 A schematic diagram of a partial structure of the limiting component of the first adjusting mechanism in another state as shown in FIG.

[0073] Fig.18 for Fig.13 A schematic diagram of a partial structure of a transmission assembly of the first adjustment mechanism in one state as shown in FIG.

[0074] Fig.19 for Fig.13 A schematic diagram of a partial structure of the transmission assembly of the first adjustment mechanism in another state as shown in FIG.

[0075] Fig. 20 for Fig.13 Schematic diagram of partial structural decomposition of the lens barrel and transmission assembly shown in ;

[0076] Fig.21 for Fig.13A partial exploded schematic diagram of the transmission assembly shown in ;

[0077] Fig.22a A display interface of a head mounted display device provided in an embodiment of the present application;

[0078] Figure 22b Another display interface of a head mounted display device provided in an embodiment of the present application;

[0079] Fig.23 A flow chart of a display method for a head mounted display device provided in an embodiment of the present application.

[0080] Description of reference numerals:

[0081] 100-display module; 110-housing; 111-frame; 1111-first through hole; 112-cover plate; 1121-first guide rail; 113-accommodating space;

[0082] 114-first support arm; 115-second support arm;

[0083] 120-display assembly; 120a-first display assembly; 120b-second display assembly; 121-lens barrel; 1211-first barrel; 12111-slide rail;

[0084] 12112-flange; 1212-second cylinder; 12121-slideway; 1213-lug; 1214-first limiting wall; 1215-second limiting wall;

[0085] 122-lens group; 1221-first lens; 1222-second lens; 123-lens bracket; 1231-sliding pin;

[0086] 130-adjustment mechanism; 130a-first adjustment mechanism; 130b-second adjustment mechanism; 131-adjustment rod; 1311-first rod body; 13111-groove;

[0087] 1312-second rod body; 1313-first limiting groove; 1314-second limiting groove; 1315-limiting step; 1316-special-shaped plug;

[0088] 1317-seal ring; 1318-slot; 132-transmission assembly; 1321-box; 132101-first opening; 132102-second opening;

[0089] 132103-third opening; 13211-body; 132111-first accommodating cavity; 132112-second accommodating cavity; 132113-third accommodating cavity;

[0090] 132114-fourth accommodating chamber; 13212-gear cover; 13212a-first gear cover; 13212b-second gear cover; 13212c-third gear cover;

[0091] 13213-first part; 13214-second part; 132141-through groove; 1322-first stage gear pair; 13221-first gear;

[0092] 13222-second gear; 1323-second stage gear pair; 13231-third gear; 13232-fourth gear; 1324-third stage gear pair;

[0093] 13241a-fifth gear; 13242a-sixth gear; 132421-guide protrusion; 1325-fourth gear pair;

[0094] 13251, 13241b-first bevel gear; 13252, 13242b-second bevel gear; 1326-universal joint; 13261-first universal joint fork;

[0095] 132621-sleeve; 13262-second universal joint fork; 13263-cross shaft; 1327-gear rod; 13271-guide groove; 13272-first boss;

[0096] 13273-second boss; 13274-annular groove; 133-adjusting button; 1331-first mounting groove; 13311-slot; 134-limiting assembly;

[0097] 1341-elastic arm; 13411-protrusion; 1342-fixing frame; 1343-limiting cover; 1344-limiting hole; 1346-spring; 13461-fixing part;

[0098] 13462-first elastic branch; 134621-first receiving groove; 134622-second receiving groove; 134623-limiting protrusion;

[0099] 13463-second elastic branch; 1347-rotating member; 13471-rotating portion; 13472-first rotating arm; 134721-first limiting column;

[0100] 13473-second rotating arm; 134731-second limiting column; 135-follower; 1351-second mounting groove; 13511-protruding portion;

[0101] 135111-special-shaped groove; 1352-bump; 136-mounting seat; 1361-first seat body; 1362-second seat body; 13621-mounting hole;

[0102] 140-buttons;

[0103] 150-Sensor;

[0104] 200-Fixed components. DETAILED DESCRIPTION

[0105] In order to make the purpose, technical scheme and advantages of the present application clearer, the embodiments of the present application will be further described in detail below in conjunction with the accompanying drawings. However, the example implementation can be implemented in various forms and should not be construed as being limited to the implementations set forth herein. The same reference numerals in the figures represent the same or similar structures, and thus their repeated description will be omitted. The words expressing position and direction described in the embodiments of the present application are all illustrated by taking the accompanying drawings as examples, but changes may be made as needed, and the changes made are all included in the scope of protection of the present application. The drawings of the embodiments of the present application are only used to illustrate the relative position relationship and do not represent the true proportion.

[0106] It should be noted that specific details are described in the following description to facilitate understanding of the present application. However, the embodiments of the present application can be implemented in a variety of other ways different from those described herein, and those skilled in the art can make similar generalizations without violating the connotation of the embodiments of the present application. Therefore, the present application is not limited to the specific implementation methods disclosed below.

[0107] refer to Figure 1 As shown, Figure 1 A schematic diagram of the structure of a head-mounted display device provided in an embodiment of the present application. In an embodiment of the present application, the head-mounted display device may be an augmented reality (AR) display device, a virtual reality (VR) display device, or a mixed reality (MR) display device, such as VR glasses, VR helmets, or AR glasses, AR helmets, or MR glasses, MR helmets, etc. Users can wear the head-mounted display device to play games, read, watch movies (or TV series), participate in virtual meetings, participate in video education, or video shopping, etc. Figure 1 The head mounted display device of the illustrated embodiment is described by taking VR glasses as an example.

[0108] The head mounted display device may include a display module 100 and a fixing component 200. The display module 100 may be used to display an image. In a specific implementation, the image displayed by the display module 100 may be an image projected onto the display module 100 by a terminal device (such as a mobile phone, a tablet computer, etc.), or may be an image formed by the display module 100. The fixing component 200 may be used to support the display module 100 and fix the display module 100 in front of the user's eyes when the user wears the head mounted display device.

[0109] Exemplarily, the fixing component 200 may include two temples, which are respectively connected to the two sides of the display module 100 to form a wearing space for accommodating the user's head together with the display module 100; alternatively, the fixing component 200 may also be a fixing belt, which may include at least two ends, and the two ends of the fixing belt are respectively connected to the two sides of the display module 100, so that a wearing space for accommodating the user's head can also be formed between the fixing belt and the display module 100; alternatively, the fixing component 200 may also be a headband or a helmet shell.

[0110] refer to Figure 2 As shown, Figure 2 A schematic diagram of the structure of a display module 100 provided in an embodiment of the present application. In an embodiment of the present application, the display module 100 may include a housing 110, a display component 120, and an adjustment mechanism 130. Among them, the display component 120 and the adjustment mechanism 130 are both installed on the housing 110, and there are two display components 120, and the two display components 120 can provide image display for the left eye and the right eye of the user respectively; there can also be two adjustment mechanisms 130, and the two adjustment mechanisms 130 are arranged in a one-to-one correspondence with the two display components 120, and each adjustment mechanism 130 can be used to adjust the display mode, position and other information of the corresponding display component, so that the user can interact with the head-mounted display device, adjust myopia / hyperopia or pupil distance by operating the adjustment mechanism 130.

[0111] In this embodiment, the display module 120 may also include a circuit board (not shown in the figure), which may be used to set a processor, a memory, and a communication module. The processor is used to control the overall operation of the head-mounted display device, which may include one or more processing units, for example: the processor may include an application processor (application processor, AP), a modem processor, a graphics processor (graphics processing unit, GPU), an image signal processor (imagesignal processor, ISP), a video processing unit (video processing unit, VPU) controller, a memory, a video codec, a digital signal processor (digital signal processor, DSP), a baseband processor, and / or a neural network processor (neural-network processing unit, NPU), etc. Among them, different processing units can be independent devices or integrated in one or more processors. The memory can be used to store instructions and data. The communication module can be used to realize the communication function between the head-mounted display device and the external device. In addition, the display module may also include a battery, a camera, a microphone and other devices.

[0112] Continue to refer Figure 2 The housing 110 may include a frame 111 and a cover plate 112. The cover plate 112 may be fixed in the frame 111 and enclosed with the frame 111 to form a receiving space 113. For example, the frame 111 and the cover plate 112 may be an integral structure, or the frame 111 and the cover plate 112 may be formed separately and then fixedly connected by riveting, bonding, or the like.

[0113] In order to make the display module 100 fit the user's face better, the two ends of the frame 111 along its width direction can be bent relative to its main body. When the user wears the head-mounted display device, the main body of the frame 111 is opposite to the front of the user's face, and the bent parts at both ends of the frame are opposite to the side of the user's face. In addition, the shell 110 can also include a mask (not shown in the figure), which can be fixed to the frame 111. When the user wears the head-mounted display device, the mask is located on the side of the display module 100 facing the user's face, and the mask can fit the user's face. This can improve the wearing comfort of the user on the one hand, and on the other hand, it can also make the accommodating space 113 of the shell 110 form an effect similar to a dark room, which helps to improve the display effect of the head-mounted display device.

[0114] For ease of explanation, in the embodiment of the present application, the two display components 120 may be respectively referred to as the first display component 120a and the second display component 120b. Correspondingly, the adjustment mechanism 130 corresponding to the first display component 120a is referred to as the first adjustment mechanism 130a, and the adjustment mechanism 130 corresponding to the second display component 120b is referred to as the second adjustment mechanism 130b.

[0115] The first display component 120a and the second display component 120b are located in the accommodating space 113 of the housing 110, and the first display component 120a and the second display component 120b are arranged along a first direction, which can be understood as the width direction of the head-mounted display device, or can be understood as the arrangement direction of the two eyes of the user when the user wears the head-mounted display device. The first adjustment mechanism 130a can be partially located in the accommodating space 113 to facilitate connection with the first display component 120a, and the other part of the first adjustment mechanism 130a is located outside the accommodating space 113 to facilitate user operation. Similarly, the second adjustment mechanism 130b can also be partially located in the accommodating space 113 and the other part is located outside the accommodating space 113.

[0116] The following embodiments mainly use the first display component 120a and the first adjustment mechanism 130a as examples to illustrate the display module 100. The second display component 120b and the second adjustment mechanism 130b can be configured with reference to the first display component 120a and the first adjustment mechanism 130a, respectively.

[0117] For reference Figure 3 and Figure 4 As shown, Figure 3 This is a schematic diagram of the structure of the first display component 120a provided in an embodiment of the present application. Figure 4 A partially exploded schematic diagram of the first display assembly 120a provided in an embodiment of the present application. In an embodiment of the present application, the first display assembly 120a may include a lens barrel 121, a display screen (not shown in the figure), and a lens group 122, wherein the axial direction of the lens barrel 122 extends along a second direction, and the second direction may be understood as the thickness direction of the display module, or may be understood as the direction approaching or moving away from the user's eyes when the user wears the head-mounted display device. Both the lens group 122 and the display screen may be disposed in the lens barrel 121, and the display screen is located on the side of the lens group 122 facing the cover plate. That is, when the user wears the head-mounted display device, the display screen is located on the side of the lens group 122 away from the user's glasses.

[0118] In the embodiments of the present application, the display screen may be a micro organic light emitting diode display (micro OLED), a silicon-based OLED, a liquid crystal display (liquid crystal display, LCD), a micro light emitting diode (micro LED) or other display devices, and the present application does not make any specific limitation on this.

[0119] In an embodiment of the present application, the lens group 122 may include a first lens 1221. The surface shape of the first lens 1221 may be designed as a concave lens or a convex lens according to requirements. For example, in one implementation, the first lens 1221 is a concave lens, in which case the first lens 1221 may be used as a myopic lens, so that the first display component 120a can achieve the function of correcting the vision of a myopic user, thereby enabling the head-mounted display device to meet the usage requirements of a myopic user. In another implementation, the first lens 1221 is a convex lens, in which case the first lens 1221 may be used as a hyperopic lens, so that the first display component 120a has the function of correcting the vision of a hyperopic user, thereby enabling the head-mounted display device to meet the usage requirements of a hyperopic user.

[0120] In some embodiments, the first lens 1221 can be slidably disposed on the lens barrel 121 along the second direction. In this way, by moving the position of the first lens 1221, the relative distance between the first lens 1221 and the user's eyes can be changed, so that the focal length of the user's eyes can be adjusted. It is easy to understand that the focal lengths of eyes with different degrees of myopia or hyperopia are different, and based on the above-mentioned adjustment function, the first display component 120a can adjust the focal lengths of the user's eyes with different degrees of myopia or hyperopia to the retina, which is equivalent to the first display component 120a achieving the effect of myopia glasses or hyperopia glasses with different degrees, thereby effectively expanding the user group of the head-mounted display device and improving the user experience.

[0121] In this embodiment, the first display component 120a may further include a lens bracket 123, which is roughly annular in structure. The first lens 1221 can be fixed to the lens bracket, and the lens bracket 123 can be slidably disposed in the lens barrel 121 along the second direction, so that the position of the first lens 1221 can be adjusted by moving the lens 123 bracket, thereby reducing the difficulty of sliding connection between the first lens 1221 and the lens barrel 121.

[0122] Exemplarily, the first lens 1221 can be fixed to the inner wall of the lens holder 123. In order to improve the connection reliability between the first lens 1221 and the lens holder 123, the inner wall of the lens holder 123 is provided with a step surface, and the edge of the first lens 1221 is fixed to the step surface. In addition, the first lens 1221 and the lens holder 123 can be fixed by, but not limited to, bonding.

[0123] Continue to refer Figure 3 and Figure 4 The lens barrel 121 may include a first barrel 1211 and a second barrel 1212, wherein the second barrel 1212 is sleeved on the outer side of the first barrel 1211, and the lens holder 123 may be slidably disposed in the first barrel 1211. One or more sliding pins 1231 may be disposed on the circumferential side of the lens holder 123, and the sliding pins 1231 extend along the radial direction of the lens holder 123. Correspondingly, the first barrel 1211 may be provided with one or more slide rails 12111 extending along the second direction, and the slide rails 12111 and the slide pins 1231 of the lens holder 123 may be disposed one by one, and each slide pin 1231 may be slidably disposed in the corresponding slide rail 12111, and the end of the slide pin 1231 may extend from the slide rail 12111 to the outer side of the first barrel 1211.

[0124] The inner wall of the second barrel 1212 may be provided with one or more slide grooves 12121, and the slide grooves 12121 may be provided in a one-to-one correspondence with the sliding pins 1231 of the lens holder 123. The slide grooves 12121 may extend along the circumference of the second barrel, and the slide grooves 12121 gradually extend from the side away from the display screen to the side close to the display screen. Therefore, in this embodiment, the slide grooves 12121 may be regarded as a spiral structure that rotates along the circumference of the second barrel 1212. In addition, in the case where there are multiple slide grooves 12121, the multiple slide grooves 12121 are distributed along the circumference of the second barrel, and the spiral directions of the multiple slide grooves 12121 are the same. At this time, the ends of the multiple slide grooves 12121 away from the display screen are roughly in the same plane in the second direction, and the ends of the multiple slide grooves 12121 close to the display screen are also roughly in the same plane in the second direction.

[0125] For reference Figure 4 and Figure 5 As shown, Figure 5 The cross-sectional structure diagram of the first display assembly 120a provided in the embodiment of the present application. As mentioned above, the sliding pin 1231 of the lens holder 123 is assembled in the slide rail 12111 of the first barrel 1211, and the end of the sliding pin 1231 can extend from the slide rail 12111 to the outside of the first barrel 1211. In a specific implementation, the end of the sliding pin 1231 can be assembled in the corresponding slide groove 12121 of the second barrel 1212. In other words, the lens holder 123 has a relative motion relationship with the first barrel 1211 and the second barrel 1212 respectively. By rotating the second barrel 1212, the end of the sliding pin 1231 can slide in the slide groove 12121 of the second barrel 1212, and there is a tendency of spiral upward (which can be understood as the direction approaching the display screen) or spiral downward (which can be understood as the direction away from the display screen). Due to the limitation of the slide rail 12111 of the first barrel 1211, the lens holder 123 can only move in the second direction under the drive of the second barrel 1212, thereby realizing the position adjustment of the lens holder 123 and the first lens 1221 carried thereon in the second direction.

[0126] In some embodiments, the lens group 122 may further include a second lens 1222, which may be fixed in the first barrel 1211, and the second lens 1222 is located on the side of the first lens 1221 facing away from the display screen. In a specific design, the second lens 1222 may be a convex lens. When a user wears a head mounted display device, it is not easy to see the display screen of the display screen because the distance between the user's eyes and the display screen is too close. By configuring the second lens 1222, the angle of the light source of the lens of the user's eye can be corrected, so that the user can clearly see the display screen of the display screen.

[0127] Exemplarily, the second lens 1222 can be fixed to the inner wall of the first barrel 1211. In order to improve the connection reliability between the second lens 1222 and the first barrel 1211, the inner wall of the first barrel 1211 can be provided with a step surface, and the edge of the second lens 1222 can be fixed to the step surface. In addition, the second lens 1222 and the first barrel 1211 can be fixed by, but not limited to, bonding.

[0128] refer to Figure 6 As shown, Figure 6 A partial structural schematic diagram of a display module 100 provided in an embodiment of the present application shows a partial structure of the display module 100 on the first display component 120a and the first adjustment mechanism 130a side, and the first adjustment mechanism 130a can be located on the side of the first display component 120a away from the second display component. In the embodiment of the present application, a first guide rail 1121 can be provided on a side of the cover plate 112 facing the accommodating space, and the first guide rail 1121 is fixed on the cover plate 112 along a first direction, and the first display component 120a is slidably provided on the first guide rail 1121. In a specific implementation, the end of the lens barrel 121 of the first display component 120a facing the cover plate 112 has a lug 1213, and the lug 1213 is provided with an opening, and the above-mentioned first guide rail 1121 can be penetrated in the opening, so that the first display component 120a is slidably assembled on the first guide rail 1121 through the cooperation between the lug 1213 and the first guide rail 1121. In this embodiment, by sliding the display component along the first direction and assembling it on the cover 112, the distance between the two display components can be changed, so that the head-mounted display device can achieve the pupil distance adjustment function, meet the usage needs of user groups with different pupil distances, and improve the user experience.

[0129] The lug 1213 may be arranged on the end surface of the first barrel 1211. In order to provide sufficient installation space for the lug 1213, a flange 12112 may be arranged on one end of the first barrel 1211 facing the cover plate 112, and the lug 1213 may be arranged on the side of the flange 12112 facing the cover plate 112. The lug 1213 and the first barrel 1211 may be an integrally formed structure, or the two may be formed separately and then fixedly connected by bonding or the like. In addition, after the first barrel 1211 and the second barrel 1212 are assembled, the second barrel 1212 may be located on the side of the flange 12112 of the first barrel 1211 facing away from the cover plate 112.

[0130] In order to improve the sliding stability of the first display component 120a relative to the cover plate 112, a plurality of first guide rails 1121 may be provided on the cover plate 112, and the plurality of first guide rails 1121 may be arranged along a third direction, where the third direction may be understood as the height direction of the head mounted display device, or may be understood as the length direction of the user's face when the user wears the head mounted display device. Accordingly, a plurality of groups of lugs 1213 may be provided on the end surface of the first cylinder 1211, and the plurality of groups of lugs 1213 are provided in one-to-one correspondence with the plurality of first guide rails 1121, and each group of lugs 1213 may include one or more lugs 1213, and each lug 1213 in each group of lugs 1213 is respectively slidably connected with a corresponding first guide rail 1121.

[0131] For reference Figure 6 and Figure 7 , Figure 7 for Figure 6 The partial cross-sectional structure diagram of the display module 100 shown in FIG. The first adjustment mechanism 130a includes an adjustment rod 131 and a transmission assembly 132. The first end of the adjustment rod 131 can extend to the outside of the housing 110 through a first through hole 1111 provided in the frame 111, and the second end of the adjustment rod 131 is located inside the housing, and the adjustment rod 131 can slide along the first through hole 1111. Among them, the first through hole 1111 can be provided on a side wall of the frame 111 close to the first display assembly 120a, that is, a side wall of the frame 111 along the first direction. As mentioned above, the two ends of the frame 111 along the first direction are bending parts. Therefore, in order to allow the adjustment rod 131 to have a relatively ample installation space, the sliding direction of the adjustment rod 131 and the first direction may have a certain angle, and the angle may be roughly equal to the bending angle of the bending part of the frame 111 relative to its main body. The transmission assembly 132 is located inside the housing, and the transmission assembly 132 can be transmission-connected to the lens barrel 121 of the first display assembly 120 a . For example, the transmission assembly 132 can be transmission-connected to the second barrel 1212 of the lens barrel 121 .

[0132] In some embodiments, the first end of the adjusting rod 131 may be provided with an adjusting button 133, and the user can control the first adjusting mechanism 130a by operating the adjusting button 133. Parameters such as the diameter and thickness of the adjusting button 133 may be designed based on ergonomics to reduce the difficulty of operation for the user.

[0133] In addition, in the embodiment of the present application, the adjustment rod 131 may be an integral structure or a split structure. Figure 7In the illustrated embodiment, the adjustment rod 131 may include a first rod body 1311 and a second rod body 1312, the diameter of the first rod body 1311 is larger than the diameter of the second rod body 1312, one end of the first rod body 1311 may be configured as the first end of the adjustment rod 131, and the other end surface of the first rod body 1311 may have a groove 13111 extending along its length direction; one end of the second rod body 1312 may be configured as the second end of the adjustment rod 131, and the other end of the second rod body 1312 may be assembled in the groove 13111 of the first rod body 1311, thereby realizing a fixed connection between the second rod body 1312 and the first rod body 1311. In this way, the adjustment rod 131 may use the first rod body 1311 to install the adjustment button 133, and use the second rod body 1312 to realize a transmission connection with the transmission assembly 132. This split structural design can reduce the difficulty of assembling the adjustment rod 131 and the transmission assembly 132, and because the radial dimension of the second rod body 1312 is relatively small, the transmission assembly 132 can also be matched with the second rod body 1312 with a relatively small size, thereby helping to reduce the space occupied by the first adjustment mechanism 130a in the shell 110.

[0134] Exemplarily, the inner wall of the groove 13111 of the first rod 1311 may have an internal thread, and correspondingly, the outer wall of the portion of the second rod 1312 assembled in the groove 13111 may have an external thread, so that the first rod 1311 and the second rod 1312 are fixedly connected by threaded connection. Of course, in some other embodiments, the first rod 1311 and the second rod 1312 may also be fixedly connected by key connection, interference fit, bonding, etc.

[0135] Continue to refer Figure 7 In the embodiment of the present application, the adjusting rod 131 can have two different states. The adjusting rod 131 can switch between the two states by sliding along the first through hole 1111. Corresponding to the two states of the adjusting rod 131, the first adjusting mechanism 130a can realize different adjustment functions. For the convenience of explanation, the state in which the adjusting rod 131 is relatively retracted into the housing 110 is referred to as the first state, and the state in which the adjusting rod 131 is relatively extended out of the housing 110 is referred to as the second state. It is easy to understand that when the adjusting rod 131 is in the first state, the distance between the adjusting button 133 and the outer wall of the frame 111 is closer. Therefore, by pulling the adjusting button 133 toward the outside of the housing 110, the adjusting rod 131 can be switched from the first state to the second state. Conversely, when the adjusting rod 131 is in the second state, by pressing the adjusting button 133 toward the inside of the housing 110, the adjusting rod 131 can be switched from the second state to the first state.

[0136] In the embodiment of the present application, the adjustment rod 131 is disconnected from the transmission assembly 132 in a first state, and the user can interact with the head-mounted display device by operating the adjustment rod 131. In the second state, the adjustment rod 131 is transmission-connected to the transmission assembly 132, and the user can transfer torque to the transmission assembly 132 by operating the adjustment rod 131, so as to transfer the torque to the lens barrel 121 of the first display assembly 120a through the transmission assembly 132.

[0137] In order to ensure that the adjustment rod 131 can be stably and reliably maintained in the first state or the second state, the first adjustment mechanism 130a may further include a limiting component 134 for limiting the adjustment rod 131. The following is an exemplary description of the structure of a possible limiting component 134 provided in an embodiment of the present application.

[0138] Continue to refer Figure 6 and Figure 7 In this embodiment, the limiting assembly 134 includes an elastic arm 1341, one end of which is relatively fixed to the housing 110, and the other end is provided with a protrusion 13411 arranged toward the adjusting rod 131. The peripheral side of the adjusting rod 131 includes a first limiting groove 1313 and a second limiting groove 1314, wherein the first limiting groove 1313 is located on a side of the second limiting groove 1314 close to the adjusting button 133, and a limiting step 1315 can be formed between the first limiting groove 1313 and the second limiting groove 1314. In a specific implementation, the first limiting groove 1313 and the second limiting groove 1314 can be provided on either the first rod body 1311 or the second rod body 1312, and the present application does not impose any limitation on this. Figure 6 1 shows the case where both are arranged on the first rod body 1311. In addition, the first limiting groove 1313 and the second limiting groove 1314 can both be annular grooves, and the limiting step 1315 formed between the two is an annular step.

[0139] The protrusion 13411 of the elastic arm 1341 can be limited in the first limiting groove 1313 or the second limiting groove 1314 . When the protrusion 13411 of the elastic arm 1341 is limited in the first limiting groove 1313, the adjusting rod 131 is in the first state. At this time, if the adjusting rod 131 is subjected to a pulling force and moves to the outside of the shell 110, the elastic arm 1341 is deformed, and the protrusion 13411 of the elastic arm 1341 can move to the second limiting groove 1314 through the limiting step 1315, thereby adjusting the adjusting rod 131 to the second state; when the protrusion 13411 of the elastic arm 1341 is limited in the second limiting groove 1314, the adjusting rod 131 is in the second state. At this time, if the adjusting rod 131 is subjected to a pressing force and moves to the inside of the shell 110, the elastic arm 1341 is deformed, and the protrusion 13411 of the elastic arm 1341 can move to the first limiting groove 1313 through the limiting step 1315, thereby adjusting the adjusting rod 131 to the first state.

[0140] In addition, in order to reduce the risk of the protrusion 13411 of the elastic arm 1341 getting stuck in the first limiting groove 1313 or the second limiting groove 1314, so that the adjustment rod 131 can smoothly switch between the first state and the second state, the two side end surfaces of the protrusion 13411 along the axial direction of the adjustment rod 131 can be chamfered or rounded. Alternatively, the surface of the protrusion 13411 can be designed as an arc surface. Correspondingly, the two side end surfaces of the limiting step 1315 can also be chamfered or rounded.

[0141] In some embodiments, the limiting assembly 134 may include a fixing frame 1342 and a limiting cover 1343. The fixing frame 1342 may be fixed to the inner wall of the housing 110, for example, the inner wall of the cover plate 112 or the inner wall of the frame 111, and the limiting cover 1343 is provided on the end of the fixing frame 1342 away from the inner wall of the housing 110. Exemplarily, the limiting cover 1343 and the fixing frame 1342 may be fixedly connected by fasteners. A groove may be provided at one end of the fixing frame 1342 facing the limiting cover 1343, and a groove may also be provided at one side of the limiting cover 1343 facing the fixing frame. The groove of the fixing frame 1342 and the groove of the limiting cover 1343 are arranged opposite to each other and the two may be combined to form a limiting hole 1344. The axis of the limiting hole 1344 and the axis of the first through hole 1111 may be arranged substantially coaxially. The adjusting rod 131 may be inserted into the limiting hole 1344.

[0142] In one implementation, the elastic arm 1341 may be disposed on the limiting cover 1343, the elastic arm 1341 extends along the axial direction of the adjustment rod 131, and one end of the elastic arm 1341 is fixedly connected to the limiting cover 1343, and the protrusion 13411 is located at the other end of the elastic arm 1341 and is disposed toward the limiting hole 1344. In another implementation, the elastic arm 1341 may be disposed on the fixing frame 1342, one end of the elastic arm 1341 is fixedly connected to the fixing frame 1342, and the protrusion 13411 is located at the other end of the elastic arm 1341 and is disposed toward the limiting hole 1344.

[0143] After understanding the switching mode of the adjusting rod 131 between the first state and the second state and the limiting effect of the limiting assembly 134 on the adjusting rod 131 , the adjusting function of the adjusting rod 131 in the two states is specifically described below.

[0144] Please refer again Figure 6 , the display module 100 may include one or more electrical components, all of which are arranged inside the housing 110. The electrical components may be connected to the circuit board of the display module 100 through a wire, and further connected to the processor through the wiring arranged on the circuit board. The wire used to connect the electrical components to the circuit board may be a cable, or may be a flexible printed circuit board (FPC). Both the cable and the FPC may adapt to the wiring space in the housing 110 by deformation, thereby reducing the difficulty of connecting the electrical components to the circuit board. The adjustment rod 131 may be used to trigger the one or more electrical components when pressed or rotated in the first state, so that the electrical components send signals to the processor, and then the processor performs corresponding functions according to the received signals.

[0145] In some embodiments, the one or more electrical devices may include a button 140, which may be arranged toward the second end of the adjusting rod 131. The button 140 may be triggered in a pressed state, and the processor may perform a corresponding function, such as triggering a control, after receiving a signal that the button 140 is triggered. Exemplarily, the button 140 may be a DOME button. In addition, in order to fix the position of the button 140, a first support arm 114 may be arranged in the housing 110, and the first support arm 114 may be fixed to the inner wall of the housing 110, such as the inner wall of the cover plate 112 or the inner wall of the frame 111. The end of the first support arm 114 away from the inner wall of the housing 110 is arranged close to the second end of the adjusting rod 131, and the button 140 may be arranged at this end of the first support arm 114.

[0146] In a specific implementation, the length of the first limiting groove 1313 along the axial direction of the adjusting rod 131 is greater than the length of the protrusion 13411 of the elastic arm 1341 along the axial direction of the adjusting rod 131, so that when the adjusting rod 131 is in the first state, the adjusting rod 131 can produce a small displacement under the action of pressing. When the adjusting rod 131 is in the first state and is not pressed, there can be a certain gap between the second end of the adjusting rod 131 and the button 140, and when the adjusting rod 131 is pressed, the second end of the adjusting rod 131 can trigger the button 140, thereby realizing the input of the key signal.

[0147] Continue to refer Figure 6 In some embodiments, the one or more electrical devices may further include a sensor 150, which may be used to detect a rotation signal of the adjustment rod 131. The rotation signal may be a rotation angle. The processor may obtain the rotation signal detected by the sensor 150, and perform corresponding functions according to the rotation signal, such as volume increase or decrease, menu switching, etc.

[0148] Further, the processor can be used to first determine the state of the adjustment rod 131, and when it is determined that the adjustment rod 131 is in the first state, obtain the rotation signal detected by the sensor 150. That is, when the user is wearing the head-mounted display device, after adjusting the adjustment rod 131 to the first state, the user can interact with the head-mounted display device by rotating the adjustment knob 133.

[0149] In addition, in this embodiment, a second support arm 115 may be further provided in the housing 110. Similar to the first support arm 114, the second support arm 115 may also be fixed to the inner wall of the housing 110, such as the inner wall of the cover plate 112 or the inner wall of the frame 111. The end of the second support arm 115 away from the inner wall of the housing 110 may be provided close to the peripheral side of the adjustment rod 131. The sensor 150 may be provided at this end of the second support arm 115, and the sensor 150 has a certain distance from the peripheral side of the adjustment rod 131. Exemplarily, the second support arm 115 may be located on one side of the first end of the limit assembly 134 close to the adjustment rod 131.

[0150] The outer wall of the adjustment rod 131 may include multiple areas distributed along the circumferential direction, and the surface roughness of the multiple areas is different from each other. In one implementation, the multiple areas may be specifically located on the outer wall of the first rod body 1311. The side of the sensor 150 facing the adjustment rod 131 includes a light source and a photosensitive area, wherein the light source can be used to emit light to the adjustment rod 131 so that the light is reflected on the outer wall of the adjustment rod 131, and the photosensitive area can be used to receive the reflected light. Since the roughness of each area of ​​the outer wall of the adjustment rod 131 is different, the degree of reflection of the light is also different. When the light is reflected by different areas of the adjustment rod 131, the reflected light received by the photosensitive area is also different, for example, it can be manifested as the wavelengths of the reflected light in each area are different.

[0151] In some implementations, a chip may be integrated in the sensor 150, and the chip may determine the area on the adjustment rod 131 that reflects the light based on the reflected light received by the photosensitive area, and then calculate the approximate rotation angle of the adjustment rod 131. It should be noted that along the circumference of the adjustment rod 131, each area of ​​the outer wall of the adjustment rod 131 has a certain arc length. When the adjustment rod 131 rotates slightly, the light source may be directed to the same area of ​​the outer wall of the adjustment rod 131 before and after the rotation. In this case, the rotation angle calculated by the chip does not change. Of course, in order to improve the detection accuracy of the sensor 150, the arc length of each area of ​​the outer wall of the adjustment rod 131 along the circumference of the adjustment rod 131 can be as small as possible.

[0152] Continue to refer Figure 6 and Figure 7 In the embodiment of the present application, the transmission assembly 132 can realize the transmission of torque through a multi-stage gear pair. Along the transmission direction of the torque, the first stage gear pair in the multi-stage gear pair can be used to be connected to the adjustment rod 131 in a meshing state, and disconnected from the adjustment rod 131 in a non-meshing state, and the last stage gear pair in the multi-stage gear pair can be used to be connected to the second barrel 1212 of the lens barrel 121 in a meshing state, so that the torque of the adjustment rod 131 can be transmitted to the second barrel 1212 through each stage of the gear pair in sequence to drive the second barrel 1212 to rotate.

[0153] In addition, the transmission assembly 132 may include a housing 1321, and at least one gear pair of the transmission assembly 132 may be installed in the housing 1321. Lubricating oil may also be provided in the housing 1321, so as to lubricate the gear pair with the lubricating oil and reduce the wear of the transmission assembly 132. The housing 1321 may be provided with a first opening 132101 and a second opening 132102 at two end surfaces along the axial direction of the adjustment rod 131, respectively. The adjustment rod 131 is partially located in the housing 1321, and the first end of the adjustment rod 131 extends outward through the first opening 132101, and the second end of the adjustment rod 131 extends outward through the second opening 132102. Oil seals may be provided at the first opening 132101 and the second opening 132102, respectively, to reduce the risk of leakage of the lubricating oil in the housing 1321.

[0154] For reference Figure 8 and Fig. 9 As shown, Figure 8 A schematic diagram of the structure of a first adjustment mechanism 130a in a state provided in an embodiment of the present application is shown in FIG. Fig. 9 A schematic diagram of the structure of a first adjustment mechanism 130a in another state provided in an embodiment of the present application. In this embodiment, along the power transmission direction, the transmission assembly 132 may include a first-stage gear pair 1322, a second-stage gear pair 1323, a third-stage gear pair 1324, and a fourth-stage gear pair 1325, wherein the fourth-stage gear pair 1325 is the last-stage gear pair of the transmission assembly 132. The gear pairs of each stage are described below.

[0155] The first-stage gear pair 1322 includes a first gear 13221 and a second gear 13222. Both the first gear 13221 and the second gear 13222 can be sleeved on the adjustment rod 131, and the second gear 13222 is located on the side of the first gear 13221 close to the first end of the adjustment rod 131. The first gear 13221 is fixedly connected to the adjustment rod 131, and the second gear 13222 and the adjustment rod 131 are clearance-fitted, and the second gear 13222 can be rotatably assembled on the box body. The first gear 13221 and the second gear 13222 can be end gears respectively, and the gear teeth of the first gear 13221 are arranged on the end face of one side thereof facing the second gear 13222, and correspondingly, the gear teeth of the second gear 13222 are arranged on the end face of one side thereof facing the first gear 13221. When the adjustment rod 131 is in the first state, there is a certain distance between the gear teeth of the first gear 13221 and the gear teeth of the second gear 13222, and the first gear 13221 is not meshed with the second gear 13222. When the adjustment rod 131 is pulled to the second state, the first gear 13221 moves with the adjustment rod toward the direction close to the second gear 13222, and the first gear 13221 is meshed with the second gear 13222. In addition, in order to smoothly connect the first gear 13221 with the second gear 13222, the tooth top of the gear teeth of the first gear 13221 can be transitioned by an arc surface, and similarly, the tooth top of the gear teeth of the second gear 13222 can also be transitioned by an arc surface.

[0156] The second-stage gear pair 1323 includes a third gear 13231 and a fourth gear 13232. The third gear 13231 can be fixedly connected to the second gear 13222, and the third gear 13231 can be sleeved on the adjustment rod 131, and the third gear 13231 is located on the side of the second gear 13222 away from the first gear 13221, and the third gear 13231 and the adjustment rod 131 can also be clearance fit. Exemplarily, the third gear 13231 and the second gear 13222 can be an integrally formed structure. The fourth gear 13232 can be located on one side of the third gear 13231 in the circumferential direction, and the fourth gear 13232 is rotatably assembled on the box body. The third gear 13231 and the fourth gear 13232 can be cylindrical gears, respectively, and the two are meshed with each other through gear teeth arranged on their respective circumferential sides.

[0157] The third-stage gear pair 1324 includes a fifth gear 13241a and a sixth gear 13242a. The fifth gear 13241a and the sixth gear 13242a can be rotatably assembled in the box body, and the fifth gear 13241a can be transmission-connected with the fourth gear 13232 through a universal joint 1326, and the sixth gear 13242a is located on one side of the circumference of the fifth gear 13241a. The fifth gear 13241a and the sixth gear 13242a can be cylindrical gears, and the two are meshed with each other through gear teeth arranged on their respective circumferences. In this solution, by connecting the fourth gear 13232 and the fifth gear 13241a through the universal joint 1326, variable-angle power transmission can be achieved between the fourth gear 13232 and the fifth gear 13241a, that is, the transmission component 132 can achieve variable-angle power transmission. This can not only simplify the structure of the transmission component 132, but also reduce the requirements for the setting positions of the starting end (adjusting rod 131) and the end end (second cylinder 1212) of the power transmission of the entire device, thereby helping to achieve a miniaturized design of the head-mounted display device.

[0158] refer to Fig.10 As shown, Fig.10 for Figure 8 In the present embodiment, the universal joint 1326 may include a first universal joint fork 13261, a second universal joint fork 13262 and a cross shaft 13263. The first universal joint fork 13261 is fixed to one end face of the fourth gear 13232, the second universal joint fork 13262 is fixed to one end face of the fifth gear 13241a, and two connecting shafts of the cross shaft 13263 are respectively assembled in the first universal joint fork 13261 and the second universal joint fork 13262.

[0159] Reference again Figure 6 , Figure 8 and Fig. 9The fourth stage gear pair 1325 is a bevel gear pair, and the fourth stage gear pair 1325 includes a first bevel gear 13251 and a second bevel gear 13252, and the first bevel gear 13251 and the second bevel gear 13252 are located outside the box body 1321. The box body 1321 may be provided with a third opening 132103, and a gear rod 1327 is assembled in the third opening 132103, one end of the gear rod 1327 is located in the box body 1321, and the other end is located outside the box body 1321, and the gear rod 1327 can slide along the axial direction of the third opening 132103, and can also rotate in the third opening 132103. The sixth gear 13242a can be assembled to one end of the gear rod 1327 located inside the box body 1321, and the sixth gear 13242a can drive the gear rod 1327 to rotate; the first bevel gear 13251 can be assembled to one end of the gear rod 1327 located outside the box body 1321, and the first bevel gear 13251 is fixedly connected to the gear rod 1327. The second bevel gear 13252 is arranged on the circumference of the second cylinder 1212, and the second bevel gear 13252 is fixedly connected to the second cylinder 1212. The gear teeth of the first bevel gear 13251 can drive the second bevel gear 13252 and the second cylinder 1212 to rotate by rolling on the gear teeth of the second bevel gear 13252.

[0160] The first bevel gear 13251 and the gear rod 1327 can be formed separately and then assembled and fixed, or they can also be an integrally formed structure; the second bevel gear 13252 and the second cylinder 1212 can be formed separately and then assembled and fixed, or they can also be an integrally formed structure.

[0161] For reference Fig. 9 and Fig.11 As shown, Fig.11 Schematic diagram of partial structure decomposition of lens barrel and transmission assembly provided in the embodiment of the present application. In the present embodiment, the inner wall of the gear hole of the sixth gear 13242a may be provided with a guide protrusion 132421 extending in the axial direction, and the outer wall of the gear rod 1327 is provided with a guide groove 13271. After the sixth gear 13242a is assembled to the gear rod 1327, the guide protrusion 132421 may be assembled in the guide groove 13271 accordingly. By utilizing the cooperation between the guide protrusion 132421 and the guide groove 13271, the sixth gear 13242a can drive the gear rod 1327 to rotate, thereby realizing the transmission of torque between the sixth gear 13242a and the gear rod 1327, and also release the axial freedom of the gear rod 1327, so that the gear rod 1327 and the first bevel gear 13251 can move along the axial direction of the gear rod.

[0162] There can be multiple guide protrusions 132421 and guide grooves 13271, respectively. Multiple guide protrusions 132421 are distributed along the circumference of the inner wall of the gear hole of the sixth gear 13242a, and multiple guide grooves 13271 are distributed along the circumference of the gear rod 1327. Multiple guide protrusions 132421 are assembled in each guide groove 13271 in a one-to-one correspondence. In this design, the multiple guide grooves 13271 on the circumference of the gear rod 1327 can be regarded as external splines, and the multiple guide protrusions 132421 on the inner wall of the gear hole of the sixth gear 13242a can be regarded as internal splines, and the connection between the sixth gear 13242a and the gear rod 1327 is a spline connection.

[0163] In addition, the peripheral side of the gear rod 1327 may be provided with a first boss 13272 and a second boss 13273, wherein the first boss 13272 is provided near the first bevel gear 13251, and the second boss 13273 is located at a side of the first boss 13272 away from the first bevel gear 13251. The lens barrel 121 may also include a first limiting wall 1214, which is provided at the peripheral side of the lens barrel 121, and is spaced apart between the first limiting wall 1214 and the second barrel 1212. Exemplarily, when the first barrel 1211 is provided with a flange 12112, the first limiting wall 1214 may be fixed to a side of the flange 12112 facing the second barrel 1212. The first bevel gear 13251 may be located between the first limiting wall 1214 and the outer wall of the second barrel 1212, so as to engage with the second bevel gear 13252 fixed to the second barrel 1212. The first boss 13272 and the second boss 13273 of the gear rod 1327 may be located at two sides of the first limiting wall 1214 , and both are respectively in contact with the first limiting wall 1214 , so that the relative movement between the gear rod 1327 and the lens barrel 121 is limited by the first limiting wall 1214 .

[0164] In some embodiments, the lens barrel 121 may further include a second limiting wall 1215, which may be fixed to the side of the first limiting wall 1214 facing away from the flange 12112, and the second limiting wall 1215 and the first limiting wall 1214 may enclose a hole-shaped structure, and the portion of the gear rod 1327 between the first boss 13272 and the second boss 13273 is located in the hole-shaped structure. The second limiting wall 1215 and the first limiting wall 1214 jointly limit the gear rod, which helps to improve the meshing stability of the first bevel gear 13251 and the second bevel gear 13252 during the movement of the first display assembly.

[0165] Of course, in some other embodiments, the gear rod 1327 can also be provided with an annular groove to achieve the above-mentioned limiting function. In this case, the first limiting wall 1214 can be partially set in the annular groove, and the two sides of the first limiting wall 1214 are respectively abutted against the two side groove walls of the annular groove. Similarly, the second limiting wall 1215 can also be partially set in the annular groove, and the two sides of the second limiting wall 1215 are respectively abutted against the two side groove walls of the annular groove. In this way, the relative sliding of the gear rod 1327 and the lens barrel 121 can also be limited by the first limiting wall 1214 and the second limiting wall 1215.

[0166] When the user moves the first display component to adjust the pupil distance, the gear rod 1327 and the first bevel gear 13251 can move synchronously with the first display component through the limiting effect of the first limiting wall 1214 and the second limiting wall 1215 on the gear rod 1327. Therefore, the first bevel gear 13251 and the second bevel gear 13252 can always maintain a meshing state, and due to the sliding connection between the gear rod 1327 and the sixth gear 13242a, the sixth gear 13242a can also always maintain a transmission connection state with the first bevel gear 13251, thereby effectively improving the structural stability of the transmission component.

[0167] Combination Figure 8 and Fig. 9 According to the above description, it can be seen that when the adjusting rod 131 is adjusted to the second state, the power transmission path of the transmission assembly 132 is: the first gear 13221 receives the torque of the adjusting rod 131 and transmits it to the second gear 13222, which is then transmitted to the third gear 13231 by the second gear 13222, and then transmitted to the fourth gear 13232 meshing therewith by the third gear 13231, and then transmitted to the fifth gear 13241a by the fourth gear 13232 through the universal joint 1326, and then transmitted to the sixth gear 13242a meshing therewith by the fifth gear 13241a, and further transmitted to the first bevel gear 13251 by the sixth gear 13242a through the gear rod 1327, and finally transmitted to the second bevel gear 13252 meshing therewith by the first bevel gear 13251, and the second cylinder 1212 is driven to rotate by the second bevel gear 13252. Since the second barrel 1212 can drive the first lens to move during the rotation process, the rotational movement of the adjustment rod 131 in the second state can eventually be converted into the movement of the first lens in the second direction. That is to say, the adjustment rod 131 can receive the user's rotation operation in the second state, so that the first adjustment mechanism 130a can realize the myopia or hyperopia adjustment function.

[0168] refer to Fig.12 As shown, Fig.12A partial exploded schematic diagram of a transmission assembly 132 provided in an embodiment of the present application. In the embodiment of the present application, the housing 1321 may include a body 13211 and a gear cover 13212. The gear cover 13212 is connected to the body 13211 and encloses the interior of the housing 1321. In order to reduce the difficulty of assembling the gear pairs of each level in the housing 1321, the gear cover 13212 may be multiple, such as Fig.14 The box shown in the figure includes three gear covers 13212. The three gear covers 13212 are defined as a first gear cover 13212a, a second gear cover 13212b and a third gear cover 13212c, wherein the first gear cover 13212a is provided on a side of the body 13211 facing the first end of the adjusting rod 131, the second gear cover 13212b is provided on a side of the body 13211 facing the second end of the adjusting rod 131, and the third gear cover 13212c is provided adjacent to the first gear cover 13212a and the second gear cover 13212b, and the third gear cover 13212c is fixedly connected to the body 13211, the first gear cover 13212a and the second gear cover 13212b respectively.

[0169] In this embodiment, the body 13211 includes a first accommodating chamber 132111, and the first gear 13221 and the second gear 13222 can be assembled in the first accommodating chamber 132111. The side of the body 13211 facing the first gear cover 13212a can be surrounded by the first gear cover 13212a to form a second accommodating chamber 132112, the second accommodating chamber 132112 is communicated with the first accommodating chamber 132111, and the third gear 13231 and the fourth gear 13232 can be assembled in the second accommodating chamber 132112. The side of the body 13211 facing the second gear cover 13212b can be surrounded by the second gear cover 13212b to form a third accommodating chamber 132113, and the fifth gear 13241a and the sixth gear 13242a can be assembled in the third accommodating chamber 132113. The side of the body 13211 facing the third gear cover 13212c can form a fourth accommodating chamber 132114 together with the third gear cover 13212c. The fourth accommodating chamber 132114 can be connected to the first accommodating chamber 132111 and the second accommodating chamber 132112 respectively. The universal joint 1326 can be assembled in the fourth accommodating chamber 132114.

[0170] Combine the following Figure 7 , Figure 8 and Fig.1213. The assembly process of the display module provided by the embodiment of the present application is described as shown. During assembly, firstly, the second gear 13222 and the third gear 13231 are sleeved on the second rod 1312, and the second rod 1312, the third gear 13231, the fourth gear 13232, the universal joint 1326, the fifth gear 13241a, and the sixth gear 13242a are assembled in the box 1321, and then the box 1321 is fixed to the cover plate; the first lens 1221 and the second lens 1222 are installed on the first barrel 1211, and then the second barrel 1212 is sleeved on the first barrel 1211. outside; assemble the first bevel gear 13251 and the second bevel gear 13252 on the second barrel 1212, and extend the gear rod 1327 of the first bevel gear 13251 into the box body 1321 to be assembled with the sixth gear 13242a, and then assemble the lens barrel 121 on the cover plate 112 through the first guide rail 1121; install the cover plate 112 in the frame body 111; finally, pass one end of the first rod body 1311 with the adjusting button 133 through the frame body 111, and fixedly connect it with the second rod body 1312 in the frame body 111.

[0171] refer to Fig.13 As shown, Fig.13 A schematic diagram of the structure of another first adjustment mechanism 130a provided in an embodiment of the present application. In the embodiment of the present application, the first adjustment mechanism 130a may also include an adjustment rod 131, a transmission assembly 132 and a limit assembly 134, and the functions of the adjustment rod 131, the transmission assembly 132 and the limit assembly 134 and the arrangement method in the display module 100 are similar to those in the above-mentioned embodiment, but there are slight differences in structure. Figures 13 to 21 The specific implementation method of the first adjustment mechanism 130a is illustrated.

[0172] refer to Fig.14 As shown, Fig.14 for Fig.13 . In the present embodiment, at the first end of the adjusting rod 131, in addition to the adjusting button 133, the first adjusting mechanism 130a may also include a follower 135 and a mounting seat 136. The adjusting button 133 has a first mounting groove 1331 on one side, and the follower 135 may be mounted in the first mounting groove 1331; similarly, the follower 135 may have a second mounting groove 1351 on the side facing away from the adjusting button 133, and the mounting seat 136 may be at least partially mounted in the second mounting groove 1351. The first end of the adjusting rod 131 may pass through the mounting seat 136 and be fixedly connected to the follower 135.

[0173] In some embodiments, the inner wall of the first installation groove 1331 has one or more slots 13311, and correspondingly, the outer wall of the follower 135 has protrusions 1352 corresponding to the slots 13311. When the follower 135 is installed in the first installation groove 1331, each protrusion 1352 can be clamped in the corresponding slot 13311, so that the follower 135 and the adjustment button 133 are fixedly connected through the cooperation of the protrusion 1352 and the slot 13311. Of course, in other embodiments, in order to simplify the assembly process of the first adjustment mechanism 130a, the follower 135 and the adjustment button 133 can also be an integrated structure.

[0174] In some embodiments, the bottom wall of the second mounting groove 1351 may be provided with a protrusion 13511, and the protrusion 13511 is provided with a special-shaped groove 135111. Exemplarily, the cross-sectional shape of the special-shaped groove 135111 may be any shape other than a circle, such as a diamond, a square, a sawtooth, and the like.

[0175] In some embodiments, the first end of the adjustment rod 131 may have a special-shaped plug 1316, and the cross-sectional shape of the special-shaped plug 1316 is consistent with the cross-sectional shape of the special-shaped groove 135111. When the above components are assembled, the special-shaped plug 1316 of the adjustment rod 131 can pass through the mounting seat 136 and then be inserted into the special-shaped groove 135111 of the protrusion 13511. Through the cooperation between the special-shaped groove 135111 and the special-shaped plug 1316, the relative movement of the adjustment rod 131 and the follower 135 can be limited, so that when the adjustment knob 133 is adjusted, the adjustment rod 131 can be synchronously driven to move through the follower 135. Of course, in some other embodiments, the adjustment rod 131 and the follower can also be connected by threaded connection, bonding, etc.

[0176] In some embodiments, the mounting seat 136 may be in a stepped structure along the axial direction of the adjusting rod 131. Exemplarily, the mounting seat 136 may include a first seat body 1361 and a second seat body 1362, and the diameter of the first seat body 1361 is greater than the diameter of the second seat body 1362. When the mounting seat 136 is assembled with the follower 135, the first seat body 1361 of the mounting seat 136 may be located in the second mounting groove 1351 of the follower 135, and there may be a clearance fit between the first seat body 1361 of the mounting seat 136 and the second mounting groove 1351 of the follower 135, so that the follower 135 can rotate or move relative to the mounting seat 136. In addition, the first seat body 1361 may be provided with an avoidance groove, which can be used to avoid the protrusion 13511 in the second mounting groove 1351. The second seat body 1362 can be located outside the second mounting groove 1351 of the follower 135, and the second seat body 1362 can be provided with a mounting hole 13621, the mounting hole 13621 is communicated with the avoidance groove, the first end of the adjusting rod 131 can pass through the mounting hole 13621 and then be connected to the protrusion 13511, and the adjusting rod 131 can rotate relative to the mounting seat 136.

[0177] When the adjusting rod 131 is mounted on the display module 100, similar to the above-mentioned embodiment, the housing of the display module 100 may be provided with a first through hole, and the second seat body 1362 of the mounting seat 136 may be fixed in the first through hole, then the first seat body 1361 of the mounting seat 136, the follower 135 sleeved on the first seat body 1361, and the adjusting button 133 sleeved on the follower 135 are all located outside the housing. When the adjusting button 133 receives a push-pull operation from the user, the follower 135 may drive the adjusting rod 131 to move relative to the mounting seat 136, thereby realizing the switching of the adjusting rod 131 between the first state and the second state; when the adjusting button 133 receives a rotation operation from the user, the follower 135 may drive the adjusting rod 131 to rotate relative to the mounting seat 136.

[0178] In addition, in some embodiments, the first adjustment mechanism 130a may further include a sealing ring 1317, and a sealing groove 1317 may be provided on a portion of the circumferential side of the adjusting rod 131 corresponding to the mounting hole 13621 of the second seat body 1362. The sealing ring 137 may be partially accommodated in the sealing groove 1317, and along the radial direction of the adjusting rod 131, the sealing ring 1317 may be squeezed between the bottom of the sealing groove 1317 and the inner wall of the mounting hole 13621. This can not only improve the sealing of the shell at the mounting hole 13621, but also increase the damping of the adjusting rod 131 during movement or rotation, thereby helping to improve the user experience.

[0179] For reference Fig.15 As shown, Fig.15 for Fig.13In the embodiment of the present application, the position limiting assembly 134 may include a spring piece 1346 and a rotating member 1347, and the spring piece 1346 and the rotating member 1347 are both installed on the structural member inside the display module, for example, Fig.15 In the embodiment shown, the spring piece 1346 and the rotating member 1347 can be installed on the box 1321 of the transmission assembly 132, so as to use the existing structural parts in the display module as the carrier of the spring piece 1346 and the rotating member 1347, thereby helping to simplify the structure of the display module. Of course, in some other embodiments, an independent structural part can also be set in the display module to carry the limit assembly 134.

[0180] In the embodiment of the present application, the box body 1321 may include a first part 13213 and a second part 13214, and the first part 13213 and the second part 13214 are sequentially arranged away from the adjusting button 133 along the axial direction of the adjusting rod 131. In a specific design, the second part 13214 has a through groove 132141, and the through groove 132141 penetrates the second part 13214 along the radial direction of the adjusting rod 131. At this time, the second part 13214 is equivalent to a hollow frame structure. The second end of the adjusting rod 131 can extend into the second part 13214, and the second end of the adjusting rod 131 is exposed in the through groove 132141 of the second part 13214.

[0181] In some embodiments, the spring piece 1346 includes a fixing portion 13461 and a first elastic branch 13462. The fixing portion 13461 is fixedly connected to the second portion 13214 of the box body 1321, for example, but not limited to, fixedly connected by a fastener. The first elastic branch 13462 is fixedly connected to the fixing portion 13461, and one side of the first elastic branch 13462 has a first receiving groove 134621 and a second receiving groove 134622, the first receiving groove 134621 and the second receiving groove 134622 are separated by a limiting protrusion 134623, and the width of the first receiving groove 134621 is greater than the width of the second receiving groove 134622. In some embodiments, the spring piece 1346 may further include a second elastic branch 13463 , which is fixedly connected to the fixing portion 13461 , and an end of the second elastic branch 13463 is spaced apart from an end of the first elastic branch 13462 .

[0182] The rotating member 1347 may be arranged on a side of the fixed portion 13461 facing the box body 1321, and the rotating member 1347 includes a rotating portion 13471 and a first rotating arm 13472 and a second rotating arm 13473 connected to the rotating portion 13471, wherein the rotating portion 13471 is rotatably connected to the second portion 13214 of the box body 1321, and the first rotating arm 13472 and the second rotating arm 13473 are arranged at a certain angle, which is greater than 0 degrees and less than 180 degrees. The end of the first rotating arm 13472 may be arranged between the first elastic branch 13462 and the outer wall of the second portion 13214, and the first rotating arm 13472 may be provided with a first limiting column 134721 on a side facing the first elastic branch 13462, and the first limiting column 134721 may be received in the first receiving groove 134621 or the second receiving groove 134622. In addition, in the example where the spring piece 1346 includes the second elastic branch 13463 , the second rotating arm 13473 may be partially crimped between the second elastic branch 13463 and the outer wall of the second portion 13214 of the box body 1321 .

[0183] For reference Fig.16 and Fig.17 As shown, Fig.16 for Fig.13 FIG. 1 is a schematic diagram of a partial structure of the limiting component 134 of the first adjusting mechanism 130a in one state, Fig.17 for Fig.13 FIG. 1 is a schematic diagram of a partial structure of the limiting assembly 134 of the first adjusting mechanism 130a in another state. In order to clearly show the relative position relationship between the limiting assembly 134 and the adjusting rod 131, Fig.16 and Fig.17 The box is omitted in the figure. In the embodiment of the present application, a second limiting column 134731 may be provided at the end of the second rotating arm 13473, and the second limiting column 134731 may be located on the side of the second rotating arm 13473 facing the box. The peripheral side of the adjustment rod 131 includes a slot 1318, and the second limiting column 134731 of the second rotating arm 13473 may be clamped in the slot 1318. Exemplarily, the slot 1318 may be an annular groove arranged along the circumference of the adjustment rod 131.

[0184] When the first limiting column 134721 of the first rotating arm 13472 is limited in the first receiving groove 134621 of the first elastic branch 13462, the adjusting rod 131 is in the first state. At this time, if the adjusting rod 131 is subjected to a pulling force and moves outside the shell, the adjusting rod 131 drives the rotating member 1347 to rotate clockwise through the second limiting column 134731, and the position of the first limiting column 134721 of the first rotating arm 13472 also changes accordingly, and the first elastic branch 13462 is squeezed to deform and move from the first receiving groove 134621 to the second receiving groove 134622, thereby adjusting the adjusting rod 131 to the second state. When the first limiting column 134721 of the first rotating arm 13472 is limited in the second receiving groove 134622 of the first elastic branch 13462, the adjusting rod 131 is in the second state. At this time, if the adjusting rod 131 is subjected to pressing force and moves into the shell, the adjusting rod 131 will drive the rotating member 1347 to rotate counterclockwise through the second limiting column 134731, and the position of the first limiting column 134721 of the first rotating arm 13472 will also change accordingly, and by squeezing the first elastic branch 13462 to deform and move from the second receiving groove 134622 to the first receiving groove 134621, the adjusting rod 131 is adjusted to the first state.

[0185] In addition, in order to reduce the risk of the first limiting column 134721 of the first rotating arm 13472 getting stuck in the first receiving groove 134621 or the second receiving groove 134622, so that the adjusting rod 131 can be smoothly switched between the first state and the second state, the limiting protrusion 134623 between the first receiving groove 134621 and the second receiving groove 134622 can have an arc-shaped surface, so that the first limiting column 134721 can move smoothly between the first receiving groove 134621 and the second receiving groove 134622 along the arc-shaped surface of the limiting protrusion 134623.

[0186] Please refer again Fig.15 In the embodiment of the present application, the electrical components in the display module, such as the button 140 and the sensor (not shown in the figure), can be carried on the second part 13214 of the box 1321, and the corresponding relationship between the button 140, the sensor and the adjustment rod 131 can be designed with reference to the aforementioned embodiment, that is, the button 140 is arranged toward the second end of the adjustment rod 131, and the sensor is provided with a light source and a photosensitive area. The side is arranged toward the outer wall of the adjustment rod 131, so that the adjustment rod 131 can realize a function similar to that in the aforementioned embodiment in the first state.

[0187] In addition, in the present embodiment, the width of the first receiving groove 134621 of the first elastic branch 13462 is greater than the diameter of the first limiting column 134721 of the first rotating arm 13472. Thus, when the adjusting rod 131 is in the first state, the first limiting column 134721 can move slightly in the first receiving groove 134621, thereby allowing the adjusting rod 131 to produce a small displacement under the action of pressing, so that the adjusting rod 131 can trigger the above-mentioned button 140 when being pressed in the first state, thereby realizing the input of the button signal.

[0188] For reference Fig.18 and Fig.19 As shown, Fig.18 for Fig.13 FIG. 1 is a schematic diagram of a partial structure of the transmission assembly 132 of the first adjustment mechanism 130a in one state, Fig.19 for Fig.13 1 is a schematic diagram of the partial structure of the transmission assembly 132 of the first adjustment mechanism 130a in another state. In this embodiment, the transmission assembly 132 can also realize the transmission of torque through a multi-stage gear pair. Along the transmission direction of the torque, the first stage gear pair in the multi-stage gear pair can be used for transmission connection with the adjustment rod 131 in a meshing state, and disconnected from the adjustment rod 131 in a non-meshing state, and the last stage gear pair in the multi-stage gear pair can be used for transmission connection with the second barrel of the lens barrel, so that the torque of the adjustment rod 131 can be transmitted to the second barrel through the individual stage gear pairs in sequence to drive the second barrel to rotate.

[0189] In a specific implementation, the transmission assembly 134 may include three-stage gear pairs, and along the power transmission direction, the three-stage gear pairs are respectively a first-stage gear pair 1322, a second-stage gear pair 1323, and a third-stage gear pair 1324, wherein the first-stage gear pair 1322 and the second-stage gear pair 1323 may be installed in the box 1321, and the third-stage gear pair 1324 may be located outside the box 1321, and the third-stage gear pair 1324 is the last-stage gear pair of the transmission assembly 132. The gear pairs of each stage are described below.

[0190] The first-stage gear pair 1322 includes a first gear 13221 and a second gear 13222. Both the first gear 13221 and the second gear 13222 can be sleeved on the adjustment rod 131, and the second gear 13222 is located on the side of the first gear 13221 close to the first end of the adjustment rod 131. The first gear 13221 is fixedly connected to the adjustment rod 131, and the second gear 13222 and the adjustment rod 131 are clearance-fitted, and the second gear 13222 can be rotatably assembled on the box body. The first gear 13221 and the second gear 13222 can be end gears respectively, and the gear teeth of the first gear 13221 are arranged on the end face of one side thereof facing the second gear 13222, and correspondingly, the gear teeth of the second gear 13222 are arranged on the end face of one side thereof facing the first gear 13221. When the adjustment rod 131 is in the first state, there is a certain distance between the gear teeth of the first gear 13221 and the gear teeth of the second gear 13222, and the first gear 13221 is not meshed with the second gear 13222. When the adjustment rod 131 is pulled to the second state, the first gear 13221 moves with the adjustment rod 131 in the direction close to the second gear 13222, and the first gear 13221 is meshed with the second gear 13222. In addition, in order to smoothly connect the first gear 13221 with the second gear 13222, the tooth top of the gear teeth of the first gear 13221 can be transitioned by an arc surface, and similarly, the tooth top of the gear teeth of the second gear 13222 can also be transitioned by an arc surface.

[0191] The second gear pair 1323 includes a third gear 13231 and a fourth gear 13232. The third gear 13231 can be fixedly connected to the second gear 13222, the third gear 13231 can be sleeved on the adjustment rod, and the third gear 13231 is located on the side of the second gear 13222 away from the first gear, and the third gear 13231 and the adjustment rod 131 can also be clearance fit. Exemplarily, the third gear 13231 and the second gear 13222 can be an integrally formed structure. The fourth gear 13232 can be located on one side of the circumference of the third gear 13231, and the fourth gear 13232 is rotatably assembled on the box body. The third gear 13231 and the fourth gear 13232 can be cylindrical gears, respectively, and the two are meshed with each other through gear teeth arranged on their respective circumferences.

[0192] The third gear pair 1324 is a bevel gear pair, and the third gear pair 1324 includes a first bevel gear 13241b and a second bevel gear (not shown in the figure), and the first bevel gear 13241b and the second bevel gear are located outside the box. The first bevel gear 13241b is assembled on a gear rod 1327, and the gear rod 1327 can be connected to the fourth gear 13232 through a universal joint 1326. The second bevel gear is arranged on the peripheral side of the second cylinder, and the second bevel gear is fixedly connected to the second cylinder. The first bevel gear 13241b and the second bevel gear can be bevel gears, and the gear teeth of the first bevel gear 13241b can drive the second bevel gear to rotate by rolling on the gear teeth of the second bevel gear.

[0193] In this embodiment, the universal joint 1326 may include a first universal joint fork 13261, a second universal joint fork 13262 and a cross shaft 13263. The first universal joint fork 13261 is fixed to one end surface of the fourth gear 13232, the second universal joint fork 13262 is slidably connected to the gear rod 1327 of the first bevel gear 13241b, and the two connecting shafts of the cross shaft 13263 are respectively assembled in the first universal joint fork 13261 and the second universal joint fork 13262. Exemplarily, the second universal joint fork 13262 has a sleeve 132621 at one end away from the cross shaft, and the gear rod 1327 can be slidably assembled in the sleeve 132621.

[0194] For reference Fig.19 and Fig. 20 As shown, Fig. 20 for Fig.13 . In the embodiment, the inner hole of the sleeve 132621 of the second universal joint fork 13262 can be a special-shaped hole, and accordingly, the cross section of the gear rod 1327 can be a special-shaped cross section matching the special-shaped hole. By using the cooperation between the gear rod 1327 and the sleeve 132621, the fourth gear 13232 can drive the gear rod 1327 to rotate, and then drive the first bevel gear 13241b to rotate, so as to realize the transmission of torque between the fourth gear 13232 and the first bevel gear 13241b, and also release the axial freedom of the gear rod 1327 and the first bevel gear 13241b, so that the gear rod 1327 and the first bevel gear 13241b can move along the axial direction of the gear rod 1327.

[0195] Of course, in some other embodiments, the gear rod 1327 and the sleeve 132621 of the second universal joint fork 13262 may also be connected by means of splines or the like, which will not be described in detail here.

[0196] The gear rod 1327 may also be provided with an annular groove 13274 on one side close to the first bevel gear 13241b. The lens barrel 121 may include a first limiting wall 1214, which may be provided on the peripheral side of the lens barrel 121, and the first limiting wall 1214 and the lens barrel 121 are spaced apart. The first bevel gear 13241b may be located between the first limiting wall 1214 and the outer wall of the second barrel 1212, so as to mesh the first bevel gear 13241b with the second bevel gear 13242b fixed to the second barrel 1212. The first limiting wall 1214 may be partially clamped in the annular groove 13274, and the two sides of the first limiting wall 1214 are respectively abutted against the two side groove walls of the annular groove 13274, and the relative movement of the gear rod 1327 and the lens barrel 121 is limited by the first limiting wall 1214.

[0197] In some embodiments, the lens barrel 121 may further include a second limiting wall 1215, which may be disposed on the side of the first limiting wall 1214 facing the gear rod 1327, and the second limiting wall 1215 is also partially clamped in the annular groove 13274, and the two sides of the second limiting wall 1215 are respectively abutted against the two side groove walls of the annular groove 13274, so that the second limiting wall 1215 can also realize the limiting function of the gear rod 1327. Exemplarily, the first limiting wall 1214 and the second limiting wall 1215 can be surrounded to form a hole-shaped structure, and a part of the shaft section of the gear rod 1327 corresponding to the annular groove 13274 is located in the hole-shaped structure.

[0198] When the user moves the first display component to adjust the pupil distance, based on the cooperation between the first limiting wall 1214, the second limiting wall 1215 and the gear rod 1327, the gear rod 1327 and the first bevel gear 13241b can move synchronously with the first display component, so the first bevel gear 13241b and the second bevel gear 13242b can always maintain a meshing state, and due to the sliding connection between the gear rod 1327 and the second universal joint fork 13262, the fourth gear 13232 can also always maintain a transmission connection state with the first bevel gear 13241b through the universal joint 1326, thereby effectively improving the structural stability of the transmission assembly.

[0199] Combination Figures 18 to 20According to the above description, it can be seen that in this embodiment, when the adjustment rod is adjusted to the second state, the power transmission path of the transmission assembly is: the first gear 13221 receives the torque of the adjustment rod 131 and the second gear 13222, and then the second gear 13222 transmits it to the third gear 13231, and then the third gear 13231 transmits it to the fourth gear 13232 meshed therewith, and then the fourth gear 13232 transmits it to the first bevel gear 13241b through the universal joint 1326, and then the first bevel gear 13241b transmits it to the second bevel gear 13242b meshed therewith, and the second cylinder 1212 is driven to rotate by the second bevel gear 13242b. Since the second cylinder 1212 can drive the first lens to move during the rotation process, the rotational movement of the adjustment rod 131 in the second state can eventually be converted into the movement of the first lens in the second direction, that is, the adjustment rod 131 can receive the user's rotation operation in the second state, so that the first adjustment mechanism 130a can achieve the myopia or hyperopia adjustment function.

[0200] refer to Fig.21 As shown, Fig.21 for Fig.13 13 is a partial exploded schematic diagram of the transmission assembly shown in . In the embodiment of the present application, the box body 1321 may include a main body 13211 and a gear cover 13212, and the main body 13211 and the gear cover 13212 are connected and enclosed to form the interior of the box body 1321. Among them, the first part 13213 and the second part 13214 of the aforementioned box body 1321 may both belong to the main body 13211 part, and the gear cover may be covered on the side of the first part away from the first part. The main body 13211 includes a first accommodating cavity 132111, and the first gear 13221 and the second gear 13222 may be assembled in the first accommodating cavity 132111. The side of the body 13211 facing the first gear cover 13212a can form a second accommodating cavity 132112 together with the first gear cover 13212a. The second accommodating cavity 132112 is connected to the first accommodating cavity 132111. The third gear 13231 and the fourth gear 13232 can be assembled in the second accommodating cavity 132112.

[0201] As mentioned above, the head-mounted display device may also include a processor for controlling the operation of the whole device. For example, in each of the above embodiments, the processor may be used to receive a signal sent by the electrical device of the head-mounted display device when the adjustment rod of the adjustment mechanism is triggered when determining that the head-mounted display device is not connected to the handle; and generate a corresponding control instruction according to the type of signal, wherein the control instruction is used to control the display content of the display interface of the head-mounted display device. Based on this method, the user can interact with the head-mounted display device directly through the adjustment mechanism without the help of a handle or gestures. In this way, the head-mounted display device can still be used even in scenes without a handle or in dim light, thereby effectively expanding the application scenarios of the head-mounted display device and improving the interactivity of the head-mounted display device in different scenarios.

[0202] In one implementation, the processor can determine whether the handle is not connected by the Bluetooth connection status between the head mounted display device and the handle. In another implementation, the processor can determine whether the user is currently using the handle by determining whether the uploaded position and posture of the handle remain unchanged. If the position and posture of the handle remain unchanged for a long time, it can be considered that the head mounted display device is not connected to the handle.

[0203] In the embodiment of the present application, the type of signal may include a pressing signal or a rotation signal, wherein the pressing signal may be generated when the key is pressed by the adjusting rod, and the rotation signal may be obtained by the sensor detecting the rotation state of the adjusting rod.

[0204] refer to Fig.22a As shown, Fig.22a A display interface of a head mounted display device provided in an embodiment of the present application. In this embodiment, the user can trigger a button by pressing the adjustment lever after adjusting the adjustment lever to a first state. The processor can generate a first control instruction according to a pressing signal generated when the button is triggered, and the first control instruction can control a cursor in the display interface to click an interactive control in the display interface, such as Fig.22a Application 1.

[0205] refer to Figure 22b As shown, Figure 22b Another display interface of a head mounted display device provided in an embodiment of the present application. In this embodiment, the user can trigger the sensor by rotating the adjustment rod after adjusting the adjustment rod to the first state. The processor can generate a second control instruction according to the rotation signal generated when the sensor is triggered, and the second control instruction can control the display interface to slide.

[0206] In addition, in this embodiment, the processor is also used to control the cursor in the display interface to point to the interactive control in the display interface according to the user's head movement or eye movement before receiving the signal sent by the electrical device when being triggered by the adjustment rod. Fig.22aIn the embodiment shown, the processor may control the cursor in the display interface to point to application 1 according to the user's head movement or eye movement, so that after receiving the press signal, the processor controls the cursor to click application 1 according to the generated first control instruction to enter the application; or Figure 22b In the illustrated embodiment, the processor may control the cursor in the display interface to point to the selection list according to the user's head movement or eye movement, thereby sliding the selection list according to the generated second control instruction after receiving the rotation signal.

[0207] In one implementation, if the processor controls the cursor movement according to the user's head movement, the processor can control the head mounted display device to shoot the cursor from the center of the display screen perpendicular to the display interface to interact with the display interface. If the processor controls the cursor movement according to the user's eye movement, the processor can obtain the user's eye position information, and the cursor indicates the position where the user is looking.

[0208] Based on the same concept, the present application also provides a display method for a head mounted display device, referring to Fig.23 As shown, the display method includes:

[0209] Step S101, when it is determined that the head mounted display device is in a state where the handle is not connected, receiving a signal sent by an electrical component of the head mounted display device when being triggered by an adjustment mechanism of the head mounted display device;

[0210] Step S102: Generate a corresponding control instruction according to the type of the signal, where the control instruction is used to control the display content of the display interface of the head mounted display device.

[0211] By applying the display method provided in the embodiments of the present application, the user can interact with the head-mounted display device without the help of a handle or through gestures, but can directly control the head-mounted display device through the adjustment mechanism. In this way, the head-mounted display device can still be used even in a scene without a handle or in dim light, thereby effectively expanding the application scenarios of the head-mounted display device and improving the interactivity of the head-mounted display device in different scenarios.

[0212] In some embodiments, the type of signal may include a pressing signal. In this case, the display method may specifically include:

[0213] A first control instruction is generated according to the pressing signal, and the first control instruction can control a cursor in the display interface to click an interactive control in the display interface.

[0214] In some embodiments, the signal type may further include a rotation signal. In this case, the display method may specifically include:

[0215] A second control instruction is generated according to the rotation signal generated when the sensor is triggered, and the second control instruction can control the display interface to slide.

[0216] In some embodiments, the above display method may further include:

[0217] Before receiving the signal sent by the electrical device when it is triggered by the adjustment rod, the cursor in the display interface is controlled to point to the interactive control in the display interface according to the head movement or eye movement of the user. For example, to control the movement of the cursor according to the head movement of the user, the position of the cursor can be determined by vertically shooting from the center of the display screen of the head-mounted display device to the display interface, and the position is the position of the cursor; to control the movement of the cursor according to the eye movement of the user, the position where the user is looking can be determined by the user's eye position information, and the position is the position of the cursor.

[0218] The above are only specific implementations of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. An adjustment mechanism (130) of a head mounted display device, the adjustment mechanism (130) being mounted on a housing (110) of the head mounted display device, characterized in that: The adjusting mechanism (130) comprises an adjusting rod (131) and a transmission assembly (132), wherein the adjusting rod (131) has a first state and a second state, wherein: The adjusting rod (131) is used to disconnect from the transmission component (132) in the first state, and trigger the electrical device of the head mounted display device to send a signal when receiving a pressing or rotating operation; and the adjusting rod (131) is used to be connected to the transmission component (132) in the second state, and transmit power to the transmission component (132) when receiving a rotating operation; The transmission component (132) is used to receive power transmitted by the adjustment rod (131) and drive the display component (120) of the head mounted display device to perform myopia or hyperopia adjustment.

2. The adjustment mechanism (130) according to claim 1, characterized in that: The adjustment mechanism (130) further comprises a limit assembly (134), wherein the limit assembly (134) comprises an elastic arm (1341), and an end of the elastic arm (1341) comprises a protrusion (13411) arranged toward the peripheral side of the adjustment rod (131); A first limiting groove (1313) and a second limiting groove (1314) are arranged on the circumferential side of the adjusting rod (131); the first limiting groove (1313) and the second limiting groove (1314) are arranged at intervals along the axial direction of the adjusting rod (131); the adjusting rod (131) can slide relative to the limiting assembly (134); and the adjusting rod (131) is in the first state when the protrusion (13411) of the elastic arm (1341) is limited in the first limiting groove (1313); and the adjusting rod (131) is in the second state when the protrusion (13411) of the elastic arm (1341) is limited in the second limiting groove (1314).

3. The adjustment mechanism (130) according to claim 2, characterized in that: The limiting assembly (134) comprises a fixing frame (1342) and a limiting cover (1343); the fixing frame (1342) and the limiting cover (1343) are fixedly connected and enclosed to form a limiting hole (1344); the adjusting rod (131) is slidably disposed in the limiting hole (1344); The elastic arm (1341) is fixedly connected to the fixing frame (1342) or the limiting cover (1343).

4. The adjustment mechanism (130) according to claim 2 or 3, characterized in that: The first limiting groove (1313) and the second limiting groove (1314) are separated by a limiting step (1315), and both side end surfaces of the limiting step (1315) along the axial direction of the adjusting rod (131) respectively have chamfered structures.

5. The adjustment mechanism (130) according to any one of claims 2 to 4, characterized in that: The length of the first limiting groove (1313) along the axial direction of the adjusting rod (131) is greater than the length of the protrusion (13411) of the elastic arm (1341) along the axial direction of the adjusting rod (131).

6. The adjustment mechanism (130) according to claim 1, characterized in that: The adjustment mechanism (130) further comprises a limit assembly (134), wherein the limit assembly (134) comprises a spring sheet (1346) and a rotating member (1347), wherein the spring sheet (1346) is fixed to a structural member in the housing (110), and the spring sheet (1346) has a first receiving groove (134621) and a second receiving groove (134622) arranged at intervals; the rotating member (1347) comprises a rotating portion (13471) and a first rotating arm (13471) connected to the rotating portion (13471). 13472) and a second rotating arm (13473), the rotating portion (13471) rotates a structural member arranged in the housing (110), the first rotating arm (13472) has a first limiting column (134721), the first limiting column (134721) switches between the first receiving groove (134621) and the second receiving groove (134622) as the rotating member (1347) rotates, and the second rotating arm (13473) has a second limiting column (134731); The peripheral side of the adjusting rod (131) is provided with a slot (1318), and the slot (1318) is used to hold the second limiting column (134731). When the adjusting rod (131) slides, it drives the rotating member (1347) to rotate through the second limiting column (134731), and the adjusting rod (131) is in the first state when the first limiting column (134721) is limited in the first receiving groove (134621), and the adjusting rod (131) is in the second state when the first limiting column (134721) is limited in the second receiving groove (134622).

7. The adjustment mechanism (130) according to claim 6, characterized in that: The first receiving groove (134621) and the second receiving groove (134622) are separated by a limiting protrusion (134623), and the limiting protrusion (134623) has an arc surface.

8. The adjustment mechanism according to claim 6 or 7, characterized in that: The width of the first receiving groove (134621) is greater than the diameter of the first limiting column (134721).

9. The adjustment mechanism (130) according to any one of claims 1 to 8, characterized in that: The transmission assembly (132) comprises a housing (1321) and a plurality of gear pairs which are sequentially connected in transmission. At least one gear pair is installed in the housing (1321), and along the transmission direction of the power, a first gear pair (1322) of the plurality of gear pairs is used for transmission connection with the adjustment rod (131) in a meshing state, and is disconnected from the adjustment rod (131) in a non-meshing state, and a last gear pair of the plurality of gear pairs is used for transmission connection with the display assembly (120) of the head mounted display device.

10. The adjustment mechanism (130) according to claim 9, characterized in that: The first-stage gear pair (1322) comprises a first gear (13221) and a second gear (13222); the first gear (13221) and the second gear (13222) are respectively sleeved on the adjusting rod (131); the first gear (13221) is fixedly connected to the adjusting rod (131); the second gear (13222) is clearance-matched with the adjusting rod (131); and the second gear (13222) is rotatably assembled in the box body (1321); the first gear (13221) and the second gear (13222) are respectively face gears; When the adjusting rod (131) is in the first state, the first gear (13221) and the second gear (13222) are spaced apart from each other; when the adjusting rod (131) is in the second state, the first gear (13221) and the second gear (13222) are meshed with each other.

11. The adjustment mechanism (130) according to claim 9 or 10, characterized in that: The last-stage gear pair is located outside the housing (1321), and comprises a first bevel gear (13251) and a second bevel gear (13252), wherein the first bevel gear (13251) is transmission-connected to a previous-stage gear pair of the last-stage gear pair, and the second bevel gear (13252) is fixedly connected to the display assembly (120).

12. The adjustment mechanism (130) according to claim 10 or 11, characterized in that: The transmission assembly (132) further comprises a second-stage gear pair (1323) and a third-stage gear pair (1324), wherein: The second-stage gear pair (1323) is a cylindrical gear pair, and the second-stage gear pair (1323) comprises a third gear (13231) and a fourth gear (13232), wherein the third gear (13231) and the fourth gear (13232) are respectively rotatably assembled on the box body (1321), and the third gear (13231) is fixedly connected to the second gear (13222); The third-stage gear pair (1324) is a cylindrical gear pair. The third-stage gear pair (1324) comprises a fifth gear (13241a) and a sixth gear (13242a). The fifth gear (13241a) and the sixth gear (13242a) are respectively rotatably assembled on the box body (1321). The fifth gear (13241a) is connected to the fourth gear (13232) through a universal joint (1326). The sixth gear (13242a) is connected to the driving wheel of the last-stage gear pair.

13. The adjustment mechanism (130) according to claim 12, characterized in that: The transmission assembly (132) further comprises a gear rod (1327), the gear rod (1327) extending from the inside of the box (1321) to the outside of the box (1321), the gear rod (1327) being slidably connected to the box (1321) and being rotatable relative to the box (1321), and the portion of the gear rod (1327) located inside the box (1321) having a special-shaped cross-section; The sixth gear (13242a) is slidably assembled on the portion of the gear rod (1327) located in the box body (1321), and the cross-sectional shape of the gear hole of the sixth gear (13242a) is the same as the cross-sectional shape of the special-shaped cross section; The driving wheel of the last-stage gear pair is fixed to the portion of the gear rod (1327) located outside the box (1321).

14. The adjustment mechanism (130) according to any one of claims 9 to 11, characterized in that: The transmission assembly (132) further comprises a second-stage gear pair (1323), wherein the second-stage gear pair (1323) is a cylindrical gear pair, and the second-stage gear pair (1323) comprises a third gear (13231) and a fourth gear (13232), wherein the third gear (13231) and the fourth gear (13232) are respectively rotatably assembled on the housing (1321), the third gear (13231) is fixedly connected to the second gear (13222), and the fourth gear (13232) is connected to the driving wheel of the last-stage gear pair via a universal joint transmission.

15. The adjustment mechanism (130) according to claim 14, characterized in that: The transmission assembly (132) further includes a gear rod (1327); The universal joint (1326) comprises a first universal joint fork (13261), a second universal joint fork (13262) and a cross shaft (13263), wherein the cross shaft (13263) is respectively assembled on the first universal joint fork (13261) and the second universal joint fork (13262), wherein the first universal joint fork (13261) is fixedly connected to the fourth gear (13232), and the second universal joint fork (13262) has a sleeve (132621) at one end away from the cross shaft (13263), wherein the inner hole of the sleeve (132621) is a special-shaped hole; One end of the gear rod (1327) is slidably assembled on the sleeve (132621), and the cross-sectional shape of the gear rod (1327) is the same as the cross-sectional shape of the special-shaped hole. The other end of the gear rod (1327) is fixedly connected to the driving wheel of the last-stage gear pair.

16. A head mounted display device, characterized in that: The invention comprises a housing (110), a display assembly (120) mounted on the housing (110), and an adjustment mechanism (130) according to any one of claims 1 to 15, wherein there are two display assemblies (120) and two adjustment mechanisms (130), respectively, and the two display assemblies (120) and the two adjustment mechanisms (130) are arranged in a one-to-one correspondence, wherein: The two display components (120) are arranged along a first direction; Each of the adjustment mechanisms (130) is arranged on a side of the corresponding display assembly (120) facing away from the other display assembly (120); an adjustment rod (131) of the adjustment mechanism (130) is slidably assembled on the shell (110), and the adjustment rod (131) has a first end exposed outside the shell (110); when the first end of the adjustment rod (131) moves close to the shell (110), the adjustment rod (131) is in the first state; when the first end of the adjustment rod (131) moves away from the shell (110), the adjustment rod (131) is in the second state.

17. The head mounted display device according to claim 16, wherein: The display assembly (120) comprises a lens barrel (121), a display screen, a first lens (1221) and a lens holder (123); the display screen is fixed in the lens barrel (121); the first lens (1221) is carried by the lens holder (123); the lens holder (123) is slidably arranged in the lens barrel (121) along the axial direction of the lens barrel (121); the lens holder (123) is transmission-connected to the transmission assembly (132); and the lens holder (123) is used to slide in a direction approaching or moving away from the display screen under the drive of the transmission assembly (132).

18. The head mounted display device according to claim 17, wherein: The lens barrel (121) comprises a first barrel (1211) and a second barrel (1212); the first barrel (1211) is used to accommodate the display screen, the first lens (1221) and the lens holder (123); the first barrel (1211) is provided with a slide rail (12111) extending in the axial direction; a sliding pin (1231) is provided on the peripheral side of the lens holder (123); the sliding pin (1231) is slidably arranged on the slide rail (12111); The second cylinder (1212) is sleeved on the outer side of the first cylinder (1211), and the inner wall of the second cylinder (1212) is provided with a spiral slide groove (12121), and the end of the sliding pin (1231) extends out from the slide rail (12111) and is assembled in the slide groove (12121); the second cylinder (1212) is transmission-connected with the transmission assembly (132), and the second cylinder (1212) is used to rotate under the drive of the transmission assembly (132).

19. The head mounted display device according to any one of claims 16 to 18, characterized in that: The housing (110) comprises a frame (111) and a cover plate (112) fixed in the frame (111); the cover plate (112) is provided with a first guide rail (1121) and a second guide rail; the first guide rail (1121) and the second guide rail are arranged along the first direction, and the first guide rail (1121) and the second guide rail extend along the first direction respectively; One of the two display assemblies (120) is slidably mounted on the first guide rail (1121), and the other display assembly (120) is slidably mounted on the second guide rail.

20. The head mounted display device according to any one of claims 16 to 19, characterized in that: The electrical device of the head mounted display device comprises a button (140); a first support arm (114) is arranged in the housing (110); an end of the first support arm (114) is arranged close to the second end of the adjustment rod (131); and the button is fixed to a side of the first support arm (114) facing the second end of the adjustment rod (131); The adjusting rod (131) is used to trigger the button (140) when receiving a pressing operation in the first state.

21. The head mounted display device according to any one of claims 16 to 20, characterized in that: The electrical device of the head mounted display device further comprises a sensor (150); a second support arm (115) is arranged in the shell (110); an end of the second support arm (115) is arranged close to the peripheral side of the adjustment rod (131); the sensor (150) is arranged at the end of the second support arm (115); and the sensor (150) is used to detect a rotation signal of the adjustment rod (131).

22. The head mounted display device according to any one of claims 16 to 21, characterized in that: The head mounted display device further includes a processor, wherein the processor is configured to: When it is determined that the head mounted display device is in a state where the handle is not connected, receiving a signal sent by the electrical device when it is triggered by the adjustment mechanism; A corresponding control instruction is generated according to the type of the signal, and the control instruction is used to control the display content of the display interface of the head-mounted display device.

23. The head mounted display device according to claim 22, wherein: The processor is further configured to: Before receiving the signal sent by the electrical device when being triggered by the adjustment rod, the cursor in the display interface is controlled to point to the interactive control in the display interface according to the head movement or eye movement of the user.

24. The head mounted display device according to claim 22 or 23, characterized in that: The type of the signal includes a pressing signal; and the processor is configured to: A first control instruction is generated according to the pressing signal, where the first control instruction is used to control a cursor in the display interface to click an interactive control in the display interface.

25. The head mounted display device according to any one of claims 22 to 24, characterized in that: The type of the signal includes a rotation signal; and the processor is configured to: A second control instruction is generated according to the rotation signal, where the second control instruction is used to control the sliding of the display interface.

26. A display method for a head mounted display device, characterized in that: include: When it is determined that the head mounted display device is in a state where the handle is not connected, receiving a signal sent by an electrical device of the head mounted display device when being triggered by an adjustment mechanism of the head mounted display device; A corresponding control instruction is generated according to the type of the signal, and the control instruction is used to control the display content of the display interface of the head-mounted display device.

27. The display method according to claim 26, characterized in that: The display method further includes: Before receiving the signal sent by the electrical device when triggered by the adjustment mechanism, the cursor in the display interface is controlled to point to an interactive control in the display interface according to the user's head movement or eye movement.

28. The display method according to claim 26 or 27, characterized in that: The type of the signal includes a pressing signal; and the display method specifically includes: A first control instruction is generated according to the pressing signal, where the first control instruction is used to control a cursor in the display interface to click an interactive control in the display interface.

29. The display method according to any one of claims 26 to 28, characterized in that: The type of the signal includes a rotation signal; and the display method specifically includes: A second control instruction is generated according to the rotation signal, where the second control instruction is used to control the sliding of the display interface.

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