Head circumference structure and head-mounted display device
By using an open headband structure and magnetic attraction technology, combined with motor drive and traction rope, the problem of large size and inconvenience of wearing closed headbands has been solved, achieving convenient wearing and storage.
Patent Information
- Application Number
- CN202410528224.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-28
- Publication Date
- 2025-10-28
AI Technical Summary
Existing head-mounted display devices have a closed head structure, are bulky and inconvenient to wear, require two hands to operate, and have a poor wearing experience.
It adopts an open headband structure. The headband extends out through the first drive mechanism and is pulled and bent by the traction mechanism to connect with the front shell. It is fixed by magnetic attraction. Combined with motor drive and traction rope, it can achieve automatic adjustment, freeing up the hands and ensuring a stable wearing experience.
It enables convenient wearing and storage of head-mounted devices, improves the wearing experience, reduces space occupation, and makes them easy to carry.
Smart Images
Figure CN120848016A_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of head-mounted devices, specifically to a head circumference structure and a head-mounted display device. Background Technology
[0002] Currently, the headband structure of head-mounted display devices is mainly a closed structure, or requires users to manually connect the headband to the front shell of the head-mounted display to form a closed structure. This makes them bulky, inconvenient to place or carry, and requires both hands to cover the head when wearing them, resulting in a poor wearing experience. Summary of the Invention
[0003] On one hand, embodiments of this application provide a head circumference structure, including a front shell, a connecting mechanism, a first driving mechanism, and a first traction mechanism. The front shell has a first end and a second end on each side, and the first end is connected to a first headband.
[0004] The first headband can maintain its own structural shape under normal conditions and deform under external force. The first headband has a connecting end and a free end. The connecting end of the first headband is located inside the front shell, and the free end of the first headband can extend or retract into the front shell under the action of the first drive mechanism.
[0005] The connecting mechanism is used to connect the free end of the first headband and the second end of the front shell;
[0006] The first traction mechanism is connected to the first headband, and the first traction mechanism is used to traction the first headband to deform so that the connecting mechanism connects the free end of the first headband to the second end of the front shell.
[0007] On the other hand, embodiments of this application provide a head-mounted display device, including a head-mounted display body and the head circumference structure described above. The head-mounted display body is disposed within the front shell and is used to transmit optical signals.
[0008] The headband structure provided in this embodiment is an open structure. When worn, a first driving mechanism drives the free end of the first headband to extend beyond the first end of the front shell. After extending a certain length, a first traction mechanism pulls the free end of the first headband to bend around the user's head and connect it to the second end of the front shell. A connecting mechanism connects the free end of the first headband to the second end of the front shell. Subsequently, the first driving mechanism drives the first headband to retract back to the first end of the front shell, thereby tightening the first headband and ensuring the headband structure is securely worn on the user's head. The automatic extension and retraction of the free end of the first headband, its connection to the second end of the front shell, frees the user's hands and improves the wearing experience. When not in use, the first driving mechanism can drive the free end of the first headband to retract back to the first end of the front shell, reducing space occupation and facilitating storage or carrying. Attached Figure Description
[0009] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0010] Figure 1 This is a schematic diagram of the structure of a head-mounted display device in one embodiment;
[0011] Figure 2 yes Figure 1 A schematic diagram of the head circumference structure in the embodiment;
[0012] Figure 3 yes Figure 2 A front view of the head circumference structure in the embodiment when it is open;
[0013] Figure 4 yes Figure 2 An exploded view of the head circumference structure in the embodiment;
[0014] Figure 5 This is a schematic diagram of the head circumference structure in another embodiment;
[0015] Figure 6 This is a schematic diagram of the head circumference structure in yet another embodiment;
[0016] Figure 7 yes Figure 6 An exploded view of the head circumference structure in the embodiment;
[0017] Figure 8 yes Figure 6 A front view of the head circumference structure in the embodiment when it is open;
[0018] Figure 9 yes Figure 6 A front view of the head circumference structure when closed in the embodiment;
[0019] Figure 10 yes Figure 2 An exploded view of the connecting mechanism in the embodiment;
[0020] Figure 11 This is an exploded view of the connecting mechanism in another embodiment;
[0021] Figure 12 yes Figure 10 An exploded view of the connecting mechanism from another perspective in the embodiment. Detailed Implementation
[0022] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It should be particularly noted that the following embodiments are for illustrative purposes only and do not limit the scope of the application. Similarly, the following embodiments are only some, not all, embodiments of the present application, and all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of the present application.
[0023] The terms "first," "second," and "third" used in the embodiments of this application are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first," "second," or "third" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified. All directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of this application are only used to explain the relative positional relationships and movement of components in a specific posture (as shown in the figures). If the specific posture changes, the directional indication will also change accordingly. The terms "comprising" and "having," and any variations thereof, in the embodiments of this application are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or components inherent to these processes, methods, products, or devices.
[0024] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.
[0025] Please see Figure 1 , Figure 1 This is a schematic diagram of the structure of a head-mounted display device in one embodiment. This application provides a head-mounted display device, including a head-mounted display body 200 and a head-circle structure 100. The head-circle structure 100 includes a front shell 10, and the head-mounted display body 200 is disposed within the front shell 10 for transmitting optical signals. The head-circle structure 100 can fix the head-mounted display body 200 to the user's head. It should be noted that the head-mounted display device in this application can be a smart glasses structure and form, including AR, VR, XR, MR, etc.
[0026] Please see Figures 2 to 4 , Figure 2 yes Figure 1 A schematic diagram of the head circumference structure in the embodiment. Figure 3 yes Figure 2 A front view of the head circumference structure when it is open in the embodiment. Figure 4 yes Figure 2 An exploded view of the head circumference structure in this embodiment. The head circumference structure 100 in this embodiment includes a front shell 10, a connecting mechanism 20, a first driving mechanism 30, and a first traction mechanism 40. The front shell 10 has a first end 11 and a second end 12 on both sides. The first end 11 is connected to a first headband 50. The first headband 50 can maintain its own structural shape under normal conditions and deform under external force. The first headband 50 can be a sheet structure made of rubber, plastic, metal, or composite materials. It can be understood that the structure of the first headband 50 is between a rigid and a flexible structure. It can provide support under certain pressure and bend and deform under greater force. Optionally, in this embodiment, the first headband 50 is made of a thin sheet of metal, and the outside of the thin sheet of metal is covered with a rubber sleeve to ensure wearing comfort. The first headband 50 has a connecting end 50a and a free end 50b. The first end 11 of the front shell 10 is provided with a first through hole 111. The connecting end 50a of the first headband 50 passes through the first through hole 111 and is located inside the front shell 10. The free end 50b of the first headband 50 can extend or retract into the front shell 10 through the first through hole 111 under the action of the first driving mechanism 30. The cross-sectional shape of the first through hole 111 matches the cross-sectional shape of the first headband 50 to prevent the first headband 50 from twisting and deforming along its length direction during the process of extending or retracting into the front shell 10, which would affect the wearing comfort or the neatness of storage.
[0027] Please see Figure 4 Optionally, the first drive mechanism 30 includes a first roller 31, which is driven to rotate by a motor. The first roller 31 is frictionally connected to the first headband 50. The motor is installed inside the front housing 10, and its specific location is not limited. The specific structure of the connection between the motor and the first roller 31 is familiar to those skilled in the art and will not be described in detail here.
[0028] Please see Figure 5 , Figure 5 This is a schematic diagram of the headband structure in another embodiment. Optionally, the first drive mechanism 30 includes a first gear 32, which is driven to rotate by a motor. The first headband 50 is provided with first teeth 33 that mesh with the first gear 32. It should be noted that, in order to avoid discomfort caused by the first teeth 33 contacting the user's head during wear, the first teeth 33 can be located on the side of the first headband 50 away from the second end 12 of the front shell 10. Correspondingly, the first gear 32 is installed inside the front shell 10 and located on the side of the first headband 50 away from the second end 12 of the front shell 10, so that the first gear 32 meshes with the first teeth 33 on the first headband 50.
[0029] Please see Figure 2 The connecting mechanism 20 is used to connect the free end 50b of the first headband 50 and the second end 12 of the front shell 10. Specifically, in this embodiment, the connecting mechanism 20 includes a first magnet 21 and a second magnet 22. The first magnet 21 is fixedly connected to the free end 50b of the first headband 50, and the second magnet 22 is fixedly connected to the second end 12 of the front shell 10. The magnetic poles of the end of the first magnet 21 away from the first headband 50 and the end of the second magnet 22 away from the front shell 10 are opposite to each other. Thus, when the free end 50b of the first headband 50 approaches the second end 12 of the front shell 10, the first magnet 21 and the second magnet 22 can attract each other, thereby connecting the free end 50b of the first headband 50 to the second end 12 of the front shell 10.
[0030] Please see Figure 4 The first traction mechanism 40 is connected to the first headband 50. The first traction mechanism 40 is used to traction the first headband 50 to deform so that the connecting mechanism 20 connects the free end 50b of the first headband 50 to the second end 12 of the front shell 10. Specifically, the first traction mechanism 40 includes a first traction rope 41, which has a fixed end 41b and a traction end 41a. The fixed end 41b of the first traction rope 41 is fixedly connected to the free end 50b of the first headband 50. The traction end 41a of the first traction rope 41 is connected to the front shell 10. When the free end 50b of the first headband 50 extends out of the front shell 10, the traction end 41a of the first traction rope 41, under tension, tractions the first headband 50 to bend and deform towards the second end 12 of the front shell 10. The first end 11 of the front shell 10 has a first limiting hole 112. The traction end 41a of the first traction rope 41 can pass through the first limiting hole 112. The first traction rope 41 is a flexible structure, and the traction end 41a of the first traction rope 41 can move axially relative to the first limiting hole 112, thereby driving the fixed end 41b of the first traction rope 41 and the free end 50b of the first headband 50 to move. The user can manually pull the traction end 41a of the first traction rope 41. The traction end 41a of the first traction rope 41 has a limiting structure on the side of the first limiting hole 112 away from the free end 50b of the first headband 50 to prevent the traction end 41a of the first traction rope 41 from disengaging from the first limiting hole 112. The limiting structure can be a limiting plate, knot, etc., which are well known to those skilled in the art.
[0031] Since the first headband 50 can maintain its own structural shape under normal conditions, when the free end 50b of the first headband 50 gradually extends to the outside of the front shell 10 under the action of the first drive mechanism 30, the first headband 50 can automatically extend; and since the first headband 50 can deform under the action of external force, when the first headband 50 extends to a certain length, by stretching the traction end 41a of the first traction rope 41, the fixed end 41b of the first traction rope 41 provides tension to the free end 50b of the first headband 50, causing the first headband 50 to bend and deform in the direction of the second end 12 of the front shell 10, so that the first magnet 21 and the second magnet 22 are attracted together. During wear, the first headband 50 extends from the first end 11 of the front shell 10 under the action of the first drive mechanism 30, that is, it gradually extends from the side of the user's cheek to the back of the user's head. When the first traction rope 41 pulls the first headband 50 to bend and deform, the user's head is supported on the inner side of the first traction rope 41 and the first headband 50 (that is, the side of the first headband 50 closer to the second end 12 of the front shell 10), so that the first headband 50 can adapt to the bending and deformation of the user's head. It can be understood that when the first magnet 21 and the second magnet 22 approach each other, the attraction between them also plays a guiding role in the bending and deformation direction of the first headband 50, so that the first headband 50 can be accurately aligned and connected with the second end 12 of the front shell 10. After the first magnet 21 and the second magnet 22 are attracted together, that is, after the free end 50b of the first headband 50 is connected to the second tube of the front shell 10, the first drive mechanism 30 drives the first headband 50 to retract to the first end 11 of the front shell 10 to tighten the first headband 50, thereby stably wearing the head circumference structure 100 on the user's head.
[0032] Please see Figure 6 , Figure 6 This is a schematic diagram of the headband structure in another embodiment. In some embodiments, the headband structure 100 further includes a second headband 80, which has a connecting end 80a and a free end 80b. The connecting end 80a of the second headband 80 is fixedly connected to the second end 12 of the front shell 10, and the free end 80b of the second headband 80 is fixedly connected to the second magnet 22. The second headband 80 can be a rigid structure or a semi-rigid structure that maintains its own structural shape under normal conditions and deforms under external force. The side of the second headband 80 closest to the first headband 50 is arc-shaped to facilitate a fit to the user's head. The second headband 80 can be set to be shorter; optionally, the length of the second headband 80 can extend to behind the user's ear. This reduces the curvature of the bend when the first traction cord 41 pulls the first headband 50 during use, facilitating the alignment and connection of the first magnet 21 and the second magnet 22. When the head-mounted display device is not in use, the second headband 80 will not occupy too much space for easy storage.
[0033] Please see Figure 6 and Figure 7 , Figure 7 yes Figure 6 An exploded view of the head circumference structure in this embodiment. In some embodiments, the head circumference structure 100 further includes a second traction mechanism 70 and a second drive mechanism 60. In this embodiment, the second headband 80 can maintain its structural shape under normal conditions and deform under external force. In this embodiment, the second headband 80 is made of a thin sheet of metal, and the outer side of the thin sheet of metal is covered with a rubber sleeve to ensure wearing comfort. The connecting end 80a of the second headband 80 is located inside the front shell 10, and the free end 80b of the second headband 80 can extend or retract into the front shell 10 under the action of the second drive mechanism 60. The second end 12 of the front shell 10 is provided with a second through hole 121. The connecting end 80a of the second headband 80 passes through the second through hole 121 and is located inside the front shell 10. The free end 80b of the second headband 80 can extend or retract into the front shell 10 through the second through hole 121 under the action of the second drive mechanism 60. The cross-sectional shape of the second through hole 121 matches the cross-sectional shape of the second headband 80 to prevent the second headband 80 from twisting and deforming along its length direction during the process of extending or retracting into the front shell 10, which would affect the wearing comfort or the neatness of storage.
[0034] Optionally, the second drive mechanism 60 includes a second roller 61, which is driven to rotate by a motor and is frictionally connected to the second head belt 80.
[0035] Optionally, the second drive mechanism 60 includes a second gear 62 (not shown in the figure), which is driven to rotate by a motor. The second headband 80 is provided with a second tooth 63 (not shown in the figure) that meshes with the second gear 62. It should be noted that, in order to avoid discomfort caused by the second tooth 63 contacting the user's head during wear, the second tooth 63 can be positioned on the side of the second headband 80 away from the first end 11 of the front shell 10. Correspondingly, the second gear 62 is installed inside the front shell 10 and located on the side of the second headband 80 away from the first end 11 of the front shell 10, so that the second gear 62 meshes with the second tooth 63 on the second headband 80. The second traction mechanism 70 is connected to the second headband 80. The first traction mechanism 40 and the second traction mechanism 70 are used to pull the first headband 50 and the second headband 80 to bend towards each other, so that the first magnet 21 and the second magnet 22 attract each other.
[0036] Please continue reading. Figure 7Specifically, in this embodiment, the second traction mechanism 70 includes a second traction rope 71, which has a fixed end 71b and a traction end 71a. The fixed end 71b of the second traction rope 71 is fixedly connected to the free end 80b of the second headband 80, and the traction end 71a of the second traction rope 71 is connected to the front shell 10. When the free end 80b of the second headband 80 extends out of the front shell 10, the traction end 71a of the second traction rope 71, under tension, pulls the second headband 80 to bend and deform towards the direction of the first headband 50. The second end 12 of the front shell 10 is also provided with a second limiting hole 122, through which the traction end 71a of the second traction rope 71 can pass. The second traction rope 71 is a flexible structure, and the traction end 71a of the second traction rope 71 can move axially relative to the second limiting hole 122, thereby driving the fixed end 71b of the second traction rope 71 and the free end 80b of the second headband 80 to move. The user can manually pull the traction end 71a of the second traction rope 71. The traction end 71a of the second traction rope 71 is provided with a limiting structure on the side of the free end 80b of the second headband 80 away from the second limiting hole 122 to prevent the traction end 71a of the second traction rope 71 from disengaging from the second limiting hole 122. The limiting structure can be a limiting plate, knot, etc., which are well known to those skilled in the art.
[0037] In this embodiment, the first headband 50 and the second headband 80 are symmetrically installed on both sides of the front shell 10. The connecting ends 50a of the first headband 50 and 80a of the second headband 80 can be stacked inside the front shell 10. When worn, the first headband 50 and the second headband 80 are respectively connected to the first drive mechanism 30 and the second headband 80.
[0038] Under the action of the second drive mechanism 60, the front shell 10 extends from the side of the user's cheek to the back of the head. Then, by stretching the traction ends 41a of the first traction rope 41 and 71a of the second traction rope 71, the free ends 50b of the first headband 50 and 80b of the second headband 80 bend towards each other, thereby attracting the first magnet 21 and the second magnet 22. Then, the first drive mechanism 30 drives the first headband 50 to retract to the first end 11 of the front shell 10.
[0039] The second drive mechanism 60 drives the second headband 80 to retract to the second end 12 of the front shell 10, tightening the first headband 50 and the second headband 80, and stably wearing the head circumference structure 100 on the user's head.
[0040] Optionally, the first traction rope 41 and the second traction rope 71 can also be driven by a motor to achieve winding and unwinding. For example, a first spool 42 is rotatably mounted on the first end 11 of the front housing 10, and the traction end 41a of the first traction rope 41 is wound and fixed on the first spool 42. The first spool 42 is driven to rotate by a motor, which is mounted on the front housing 10. A second spool 72 is rotatably mounted on the second end 12 of the front housing 10, and the traction end 71a of the second traction rope 71 is wound and fixed on the second spool 72. The second spool 72 is driven to rotate by a motor, which is mounted on the front housing 10. It is understood that the motors driving the first traction rope 41, the second traction rope 71, the first headband 50, and the second headband 80 are independent of each other.
[0041] Please see Figure 8 and Figure 9 , Figure 8 yes Figure 6 A front view of the head circumference structure when it is open in the embodiment. Figure 9 yes Figure 6 A front view of the head circumference structure in the embodiment when closed. When worn, the first headband 50 and the second headband 80 extend from the first end 11 and the second end 12 of the front shell 10, respectively, driven by their respective connected motors. The first spool 42 and the second spool 72 rotate forward under the drive of their respective connected motors (i.e.,...). Figure 6 As shown in direction C, the wires are laid out so that the fixed end 41b of the first traction rope 41 extends synchronously with the free end 50b of the first headband 50, and the fixed end 71b of the second traction rope 71 extends synchronously with the free end 80b of the second headband 80. After extending a certain length, the first spool 42 and the second spool 72 rotate in opposite directions, so that the first traction rope 41 and the second traction rope 71 respectively pull the first headband 50 and the second headband 80 to bend towards each other, thereby causing the first magnet 21 and the second magnet 22 to align and attract each other. Then, the connecting end 50a of the first headband 50 and the connecting end 80a of the second headband 80 retract to the first end 11 and the second end 12 of the front shell 10 respectively, tightening the first headband 50 and the second headband 80.
[0042] It should be noted that during the bending process, the first headband 50 and the second headband 80 are respectively pulled by the first traction rope 41 and the second traction rope 71, as well as guided by the mutual attraction between the first magnet 21 and the second magnet 22, bending symmetrically along both sides of the user's head, and finally achieving the alignment and connection of the first magnet 21 and the second magnet 22.
[0043] In some embodiments, the connecting mechanism 20 further includes a male lock body 23 and a female lock body 24. The male lock body 23 is fixedly connected to the free end 50b of the first headband 50, and the first magnet 21 is fixedly connected to the end of the male lock body 23 away from the first headband 50. The female lock body 24 is fixedly connected to the free end 80b of the second headband 80, and the second magnet 22 is fixedly connected to the end of the female lock body 24 away from the second headband 80. When the first magnet 21 and the second magnet 22 are attracted, the male lock body 23 and the female lock body 24 engage.
[0044] Please see Figure 10 , Figure 10 yes Figure 2 An exploded view of the connecting mechanism in this embodiment. Specifically, in this embodiment, the male lock body 23 includes a lock hook 231, and the female lock body 24 extends along the first direction (i.e., Figure 9 A lock hole 241 is provided in the direction E shown in the figure, and the lock body 24 is provided along the second direction (i.e. Figure 9 A receiving cavity 242 is provided in the S direction shown in the figure. The receiving cavity 242 communicates with the lock hole 241. The second direction is perpendicular to the first direction. A lock cylinder 243 and a drive assembly 244 are provided in the receiving cavity 242. The lock cylinder 243 can move towards the lock hole 241 and engage with the lock hook 231 inserted into the lock hole 241 under the drive of the drive assembly 244, or move away from the lock hole 241 to disengage from the lock hook 231. In some scenarios, the lock hook 231 has a slot 2313 on the side near the receiving cavity 242, and the lock cylinder 243 can be inserted into the slot 2313 to engage with the lock hook 231, so as to prevent the lock hook 231 from detaching from the main lock body 24. In some scenarios, the lock hook 231 includes a fixedly connected insertion end 2311 and a locking end 2312. The diameter of the insertion end 2311 is smaller than the diameter of the locking end 2312. The insertion end 2311 has a conical structure so that when the first magnet 21 and the second magnet 22 approach each other, the insertion end 2311 and the locking end 2312 are inserted into the lock hole 241 in sequence, and the lock cylinder 243 can abut against the locking end 2312 to prevent the lock hook 231 from detaching from the main lock body 24. In some scenarios, there are two or more lock hooks 231 symmetrically arranged, and the number of lock holes 241, lock cylinders 243 and drive components 244 corresponds one-to-one with the number of lock hooks 231.
[0045] Optionally, the drive assembly 244 includes a shape memory alloy wire 2441. Both ends of the shape memory alloy wire 2441 are fixedly connected to the inner walls of the lock cylinder 243 and the receiving cavity 242 along a second direction, respectively. The shape memory alloy wire 2441 is connected to a power source. In the de-energized state, the shape memory alloy wire 2441 holds the lock cylinder 243 against the inner walls of the receiving cavity 242, and in the energized state, it pulls the lock cylinder 243 away from the keyhole 241. This embodiment uses a double-pass shape memory alloy wire 2441. It should be understood that the shape memory alloy wire 2441 has a unique shape memory effect and superelastic properties, and has advantages such as simple structure, small size, light weight, high energy density, large strain, and high flexibility. As a good actuating element, the double-ended shape memory alloy wire 2441 will contract like a muscle when driven by current, and will return to its original length when the current is unloaded and cooled to room temperature. In this embodiment, the shape memory alloy wire 2441 can be wound into a spring shape. In the power-off state, the shape memory alloy wire 2441 acts as a spring to hold the lock cylinder 243 against the inner wall of the receiving cavity 242. In the power-on state, the shape memory alloy wire 2441 contracts and pulls the lock cylinder 243 away from the lock hole 241, thereby releasing the lock hook 231. Furthermore, the drive assembly 244 also includes a first elastic element 2442, which may be a sheet, spring, etc. The first elastic element 2442 is installed in the receiving cavity 242 and abuts against the lock cylinder 243 and the inner wall of the receiving cavity 242, so that the lock cylinder 243 always has a tendency to move closer to the key hole 241. The first elastic element 2442 always abuts against the lock cylinder 243 and the inner wall of the receiving cavity 242 to improve the stability when the lock cylinder 243 and the lock hook 231 are engaged. When it is necessary to release the lock hook 231, the shape memory alloy wire 2441 needs to overcome the elastic force of the first elastic element 2442.
[0046] Please see Figure 11 and Figure 12 , Figure 11 This is an exploded view of the connecting mechanism in another embodiment. Figure 12 yes Figure 10 An exploded view of the connecting mechanism from another perspective in the embodiment. Optionally, the main lock body 24 is also provided with a driving cavity 246, and a connecting hole 247 is provided between the driving cavity 246 and the receiving cavity 242. The driving assembly 244 includes a second elastic element 2443, a pull rope 2444, a driving arm 245 disposed in the driving cavity 246, and a driving member 2445. The second elastic element 2443 is installed in the receiving cavity 242 and abuts against the lock cylinder 243 and the inner wall of the receiving cavity 242, so that the lock cylinder 243 always has a tendency to move towards the lock hole 241, thereby realizing the locking function. The second elastic element 2443 can be a spring, a sheet, etc.
[0047] The drive arm 245 has a fixedly connected rotating end 245b and a swing end 245a. The rotating end 245b of the drive arm 245 is rotatably connected in the drive cavity 246. One end of the pull rope 2444 is fixedly connected to the lock cylinder 243, and the other end passes through the connecting hole 247 and is fixedly connected to the rotating end 245b of the drive arm 245. The swing end 245a of the drive arm 245 extends along the first direction. The swing end 245a of the drive arm 245 swings under the action of the drive member 2445, thereby driving the rotating end 245b to rotate.
[0048] Understandably, the drive arm 245 has room to move within the drive cavity 246. The connection point between the pull rope 2444 and the rotating end 245b is not on the same axis as the rotation center of the rotating end 245b. The rotating end 245b includes a rotating boss 2451, with a rotating shaft 2452 at its center. Fixed posts 2453 are provided around the periphery of the rotating boss 2451. The rotating boss 2451 rotates around the rotating shaft 2452, and the pull rope 2444 is wound and fixed to the fixed posts 2453. The pull rope 2444 is a flexible structure that can only withstand tensile force. The length of the pull rope 2444 is adapted to the distance from the lock cylinder 243 to the fixed post 2453. Thus, when the swing end 245a of the drive arm 245 swings, it drives the rotating boss 2451 and the rotating shaft 2452 to rotate, which in turn drives the pull rope 2444 to move. The pull rope 2444 pulls the lock cylinder 243 away from the lock hole 241 to release the lock hook 231.
[0049] The drive element 2445 includes an electric push rod, the output end of which abuts against the swing end 245a of the drive arm 245. When the lock hook 231 needs to be released, the electric push rod extends to push the swing end 245a of the drive arm 245 to swing. The drive element 2445 can also be other linear drive mechanisms well known to those skilled in the art, and no specific limitation is made here. The cooperation of the drive arm 245, the drive element 2445, and the pull rope 2444 can apply a greater retraction force to the lock cylinder 243, facilitating the unlocking function.
[0050] Furthermore, a cover plate 249 is detachably mounted on the main lock body 24. The cover plate 249 is installed on the side of the receiving cavity 242 and the driving cavity 246. The cover plate 249 can be detachably and fixedly connected to the main lock body 24 by means of buckles, bolts, etc. A button 248 is provided on the main lock body 24. The button 248 includes a mounting plate 2481 and a wedge block 2482. A slot is provided on the cover plate 249. The mounting plate 2481 is fastened in the cover plate 249 and fixedly connected to the main lock body 24 by the cover plate 249. The wedge block 2482 is elastically connected to the mounting plate 2481. The opposite surface of the wedge block 2482 and the driving arm 245 is not parallel. Under pressure, the wedge block 2482 is inserted into the driving cavity 246 and squeezes the driving arm 245, causing the swing end 245a of the driving arm 245 to swing, thereby driving the rotating boss 2451 to rotate.
[0051] The above description is only a part of the embodiments of this application and does not limit the scope of protection of this application. Any equivalent device or equivalent process transformation made based on the content of this application specification and drawings, or direct or indirect application in other related technical fields, are similarly included in the patent protection scope of this application.
Claims
1. A head circumference structure, characterized in that, The system includes a front shell, a connecting mechanism, a first driving mechanism, and a first traction mechanism. The front shell has a first end and a second end on each side, and the first end is connected to a first headband. The first headband can maintain its own structural shape under normal conditions and deform under external force. The first headband has a connecting end and a free end. The connecting end of the first headband is located inside the front shell, and the free end of the first headband can extend or retract into the front shell under the action of the first drive mechanism. The connecting mechanism is used to connect the free end of the first headband and the second end of the front shell; The first traction mechanism is connected to the first headband, and the first traction mechanism is used to traction the first headband to deform so that the connecting mechanism connects the free end of the first headband to the second end of the front shell.
2. The head circumference structure according to claim 1, characterized in that, The connecting mechanism includes a first magnet connected to the free end of the first headband and a second magnet connected to the second end of the front shell, wherein the first magnet and the second magnet can attract each other.
3. The head circumference structure according to claim 2, characterized in that, The first traction mechanism includes a first traction rope, which has a fixed end and a traction end. The fixed end of the first traction rope is fixedly connected to the free end of the first headband. The traction end of the first traction rope is connected to the front shell. When the free end of the first headband extends out of the front shell, the traction end of the first traction rope pulls the first headband to bend and deform towards the second end of the front shell under tension.
4. The head circumference structure according to claim 3, characterized in that, The head circumference structure also includes a second headband, which has a connecting end and a free end. The connecting end of the second headband is connected to the second end of the front shell, and the free end of the second headband is fixedly connected to the second magnet.
5. The head circumference structure according to claim 4, characterized in that, The headband structure also includes a second traction mechanism and a second drive mechanism. The second headband can maintain its own structural shape under normal conditions and deform under external force. The connecting end of the second headband is located inside the front shell, and the free end of the second headband can extend or retract into the front shell under the action of the second drive mechanism. The second traction mechanism is connected to the second headband. The first traction mechanism and the second traction mechanism are respectively used to pull the first headband and the second headband to bend towards each other so that the first magnet and the second magnet attract each other.
6. The head circumference structure according to claim 5, characterized in that, The second traction mechanism includes a second traction rope, which has a fixed end and a traction end. The fixed end of the second traction rope is fixedly connected to the free end of the second headband, and the traction end of the second traction rope is connected to the front shell. When the free end of the second headband extends out of the front shell, the traction end of the second traction rope pulls the second headband to bend and deform towards the direction of the first headband under tension.
7. The head circumference structure according to any one of claims 4-6, characterized in that, The connecting mechanism further includes a male lock body and a female lock body. The male lock body is fixedly connected to the free end of the first headband, and the first magnet is fixedly connected to the end of the male lock body away from the first headband. The female lock body is fixedly connected to the free end of the second headband, and the second magnet is fixedly connected to the end of the female lock body away from the second headband. When the first magnet and the second magnet are attracted to each other, the male lock body and the female lock body engage.
8. The head circumference structure according to claim 7, characterized in that, The male lock body includes a lock hook, and the female lock body has a lock hole along a first direction and a receiving cavity along a second direction. The receiving cavity communicates with the lock hole, and the second direction is perpendicular to the first direction. The receiving cavity is provided with a lock cylinder and a driving assembly. The lock cylinder can move towards the lock hole and engage with the lock hook inserted into the lock hole under the drive of the driving assembly, or move away from the lock hole to disengage from the lock hook.
9. The head circumference structure according to claim 8, characterized in that, The drive assembly includes a shape memory alloy wire. The two ends of the shape memory alloy wire are fixedly connected to the lock cylinder and the inner wall of the receiving cavity along the second direction, respectively. The shape memory alloy wire is connected to a power source. When the power is off, the shape memory alloy wire holds the lock cylinder against the inner wall of the receiving cavity, and when the power is on, it pulls the lock cylinder away from the keyhole.
10. The head circumference structure according to claim 9, characterized in that, The drive assembly further includes a first elastic element, which is installed in the receiving cavity and abuts against the lock cylinder and the inner wall of the receiving cavity, so that the lock cylinder always tends to move towards the keyhole.
11. The head circumference structure according to claim 8, characterized in that, The main lock body also has a drive cavity, and a communication hole is provided between the drive cavity and the receiving cavity. The drive assembly includes a second elastic element, a pull rope, a drive arm disposed in the drive cavity, and a drive component. The second elastic element is installed in the receiving cavity and abuts against the lock cylinder and the inner wall of the receiving cavity, so that the lock cylinder always has a tendency to move closer to the key hole; The drive arm has a rotating end and a swinging end. The rotating end is rotatably connected in the drive cavity. One end of the pull rope is fixedly connected to the lock cylinder, and the other end passes through the connecting hole and is fixedly connected to the rotating end of the drive arm. The swinging end of the drive arm extends along the first direction and swings under the action of the drive member, thereby driving the rotating end of the drive arm to rotate.
12. The head circumference structure according to claim 11, characterized in that, The driving component includes an electric push rod, the output end of which abuts against the swing end of the driving arm.
13. The head circumference structure according to claim 11, characterized in that, A button is provided on the main lock body. The button includes a mounting plate and a wedge block. The mounting plate is fixedly connected to the main lock body, and the wedge block is elastically connected to the mounting plate. Under pressure, the wedge block is inserted into the drive cavity and squeezes the drive arm, causing the swing end of the drive arm to swing, thereby driving the rotating end of the drive arm to rotate.
14. The head circumference structure according to any one of claims 1-3, characterized in that, The first drive mechanism includes a first roller, which is driven to rotate by a motor, and the first roller is in frictional connection with the first headband.
15. The head circumference structure according to any one of claims 1-3, characterized in that, The first drive mechanism includes a first gear, which is driven to rotate by a motor, and the first headband is provided with first teeth that mesh with the first gear.
16. The head circumference structure according to any one of claims 1-3, characterized in that, The first headband and the second headband have a sheet-like structure.
17. A head-mounted display device, characterized in that, It includes a head-mounted display body and a head circumference structure as described in any one of claims 1-16, wherein the head-mounted display body is disposed within the front shell and is used to transmit optical signals.