Head-mounted device

Abstract

The utility model discloses a head-mounted device, which comprises a hollow shell, a first connecting piece, a second connecting piece, a knob and a head band, an accommodating space is formed in the hollow shell, and two through holes are oppositely arranged on the inner side wall of the hollow shell; a mounting hole is formed in the outer side wall of the hollow shell; the mounting hole and the via hole are communicated with the accommodating space; the first connecting piece and the second connecting piece are arranged in the containing space in parallel, and the first connecting piece and the second connecting piece can reciprocate in the axial direction of the containing space. The knob is inserted into the mounting hole and extends between the first connecting piece and the second connecting piece; the two sides of the rotary knob are connected with the first connecting piece and the second connecting piece correspondingly, and the rotary knob is used for driving the first connecting piece and the second connecting piece to move face to face or back to back. The head band is arranged on the side wall of the hollow shell; the two ends of the head band penetrate through the two via holes respectively and are connected with the first connecting piece and the second connecting piece respectively. And accurate adjustment of the tightness of the head circumference is realized.

Description

Technical Field

[0001] The utility model relates to the technical field of wearable devices, in particular to a head-mounted device. Background Art

[0002] With the development of science and technology, an electroencephalogram is a device used to measure and record a person's brain electrical activity. It usually consists of multiple sensors (electrodes) placed on the person's scalp to capture electrical signals from the brain. These electrical signals are amplified, filtered, and digitized, and can then be analyzed and interpreted. In the process of using a head-mounted electroencephalogram, it is often necessary to wear the device around the head. However, due to the different head shapes, face shapes, and fatness of the wearer, the tightness when wearing it is often different for different wearers.

[0003] This requires a reliable and easy-to-operate adjustment mechanism to adjust the tightness of the headband. A common adjustment method is to set an elastic band. For example, the Chinese patent with publication number CN116036474A discloses a wearable transcutaneous acupoint electrical stimulation physiotherapy device for preventing and treating postoperative cognitive dysfunction. The specification states that the physiotherapy device uses the elastic adjustment of the adjustable ring elastic band on the coronal plane of the head to adapt to the size of the patient's head circumference and tightly fix the headband wearable device on the patient's head.

[0004] However, elastic bands can usually only provide limited tightness adjustment, and lose elasticity after long-term use, resulting in the tightness cannot be effectively adjusted.

[0005] Therefore, the prior art still needs to be improved and developed. Utility Model Content

[0006] In view of the above-mentioned deficiencies in the prior art, an object of the present invention is to provide a head-mounted device, aiming to solve the problem that the elastic band can only provide limited tightness adjustment and loses elasticity during long-term use, resulting in the tightness cannot be effectively adjusted.

[0007] The technical solution of the utility model is as follows:

[0008] A head-mounted device, comprising a hollow shell, a first connecting member and a second connecting member, a knob, and a headband, wherein a accommodating space is formed in the hollow shell, and two through holes are relatively arranged on the inner side wall of the hollow shell; a mounting hole is arranged on the outer side wall of the hollow shell; wherein the mounting hole and the through hole are both connected to the accommodating space; the first connecting member and the second connecting member are arranged in parallel in the accommodating space, and the first connecting member and the second connecting member can both reciprocate along the axial direction of the accommodating space; the knob is plugged into the mounting hole and extends between the first connecting member and the second connecting member; the two sides of the knob are respectively connected to the first connecting member and the second connecting member, and are used to drive the first connecting member and the second connecting member to move toward or away from each other; and a headband, which is arranged on the side wall of the hollow shell; the two ends of the headband respectively pass through the two through holes and are respectively connected to the first connecting member and the second connecting member.

[0009] The head-mounted device, wherein the first connecting member is provided with a first strip-shaped through hole, and a first rack is provided on the side wall of the first strip-shaped through hole along the length direction; the second connecting member is provided with a second strip-shaped through hole, and a second rack is provided on the side wall of the second strip-shaped through hole along the length direction; the first rack and the second rack are arranged opposite to each other, and the knob includes an adjusting gear, which is rotatably arranged in the first strip-shaped through hole and the second strip-shaped through hole, and a gear ring portion is provided on the circumference of the adjusting gear, and the first rack and the second rack are respectively meshed with opposite sides of the gear ring portion.

[0010] The head-mounted device described herein is characterized in that a ratchet ring is provided on the side wall of the mounting hole, and the knob includes a mounting cover and a stop body; the mounting cover is arranged on the side of the mounting hole away from the accommodating space, and a central rotating shaft is provided on the mounting cover, and the adjusting gear is sleeved on the central rotating shaft, and the mounting cover is used to drive the adjusting gear to rotate; the stop body is sleeved on the central rotating shaft and rotates synchronously with the adjusting gear, and a pawl portion is provided on the outer peripheral wall of the stop body, and the pawl portion has a stop surface and a guide inclined surface, and when the stop body rotates in a direction toward the stop surface, the stop surface engages with the ratchet ring; when the stop body rotates in a direction toward the guide inclined surface, the guide inclined surface and the ratchet ring slide relative to each other.

[0011] The head-mounted device, wherein the angle between the guiding inclined surface and the stop body is an acute angle; and the angle between the abutment surface and the stop body is a right angle or an obtuse angle.

[0012] The head-mounted device described above, wherein a rib is provided on the mounting cover on a side facing the accommodating space, and an arc groove adapted to the rib is provided on the stop body, and the rib is passed through the arc groove. When the mounting cover rotates, the rib abuts against the arc groove to push the stop body to rotate.

[0013] The head-mounted device described above, wherein a push column is further provided on the side of the mounting cover facing the accommodating space, a hook opening is provided on the stop body, the end of the stop body is bent toward the hook opening to form a hook-shaped component, and the push column is passed through the hook opening. When the stop body rotates in the direction toward the stop surface, the push column squeezes the hook-shaped component inward to tighten it so that the stop surface and the ratchet ring are out of engagement.

[0014] The head-mounted device, wherein the stop body and the adjusting gear are integrally formed; and / or the stop body and the pawl portion are integrally formed.

[0015] The head mounted device, wherein at least two ratchet parts are arranged at intervals along the circumferential direction on the outer edge of the ratchet ring.

[0016] The head-mounted device, wherein the hollow shell includes a wearable shell and an assembly shell, the assembly shell cooperates with the wearable shell to form the accommodating space, the headband is arranged on the wearable shell, and the mounting hole is opened on the assembly shell; a first guide column and a second guide column are arranged on the side of the assembly shell facing the accommodating space, the first guide column and the second guide column are arranged at intervals along the width direction of the assembly shell, and the first connecting member or the second connecting member is arranged between the first guide column and the second guide column.

[0017] The head-mounted device, wherein a first positioning groove is provided on the first guide column, a first positioning column adapted to the first positioning groove is provided on the wearable shell, and the first positioning column is inserted in the first positioning groove; and / or a second positioning groove is provided on the second guide column, a second positioning column adapted to the second positioning groove is provided on the wearable shell, and the second positioning column is inserted in the second positioning groove.

[0018] Compared with the prior art, the embodiment of the utility model has the following advantages:

[0019] The utility model provides a head-mounted device with adjustable tightness and easy operation, which is provided with a hollow shell for wearing on the top of the user's head, and is also provided with a first connector, a second connector and a headband. The headband passes through a through hole and is connected with the first connector and the second connector, so that the entire head-mounted device can be tightly fixed on the wearer's head to reduce movement and shaking. The first connector and the second connector are connected with the headband to form a ring for enclosing the user's head. The user can move the first connector and the second connector toward or away from each other by turning a knob, that is, adjust the length of the overlapping part between the first connector and the second connector, without the need for additional tools or operations, thereby achieving more precise tightness adjustment, and is flexibly applicable to users of various head circumferences, and can be operated by touch without naked eye observation, which is simple and convenient. Reduce the sliding and shaking of the head-mounted device and provide better stability.

[0020] This head-mounted device can still maintain stability and comfort during long-term use. By using this head-mounted device, the tightness of the head-mounted device can be flexibly adjusted according to the head circumference of different wearers to obtain better wearing comfort and stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 This is an assembly diagram of the head mounted device in the present utility model;

[0023] Figure 2 This is an exploded diagram of the structure of the head-mounted device in the present utility model;

[0024] Figure 3 This is another structural exploded diagram of the head mounted device in the present invention;

[0025] Figure 4 It is a structural schematic diagram of the knob in the utility model;

[0026] Figure 5 It is an assembly diagram of the knob, the first connecting member, the second connecting member and the assembly housing in the utility model;

[0027] Figure 6 It is a structural exploded view of the knob, the first connecting member, the second connecting member and the assembly housing in the utility model;

[0028] Figure 7 for Figure 6 A partial enlarged view of the middle A;

[0029] Figure 8 It is a structural schematic diagram of the assembly housing and knob structure in the utility model;

[0030] Fig. 9 This is a local enlarged view of point B in 8.

[0031] Among them, 10, hollow shell; 11, wearable shell; 111, first positioning column; 112, second positioning column; 12, assembly shell; 121, mounting hole; 1211, ratchet ring; 122, first guide column; 1221, first positioning groove; 123, second guide column; 1231, second positioning groove; 20, headband; 30, first connecting member; 31, first strip through hole; 311, first rack; 40. Second connecting member; 41. Second strip-shaped through hole; 411. Second rack; 50. Knob; 51. Adjusting gear; 511. Gear ring; 52. Mounting cover; 521. Central rotating shaft; 522. Rib column; 523. Push column; 53. Stop body; 531. Ratchet pawl; 5311. Stop surface; 5312. Guide slope; 532. Circular arc groove; 533. Hook mouth; 534. Hook-shaped component. DETAILED DESCRIPTION

[0032] In order to enable those skilled in the art to better understand the solution of the utility model, the following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0033] See also Figure 1 , Figure 2 and Figure 3In one embodiment of the utility model application, a head-mounted device is disclosed, which includes a hollow shell 10, a first connecting member 30, a second connecting member 40, a knob 50, and a headband 20. The hollow shell 10 is formed with a receiving space, and two through holes are relatively arranged on the inner side wall of the hollow shell 10; a mounting hole 121 is arranged on the outer side wall of the hollow shell 10; the mounting hole 121 and the through hole are both connected to the receiving space; the first connecting member 30 and the second connecting member 40 are arranged in parallel in the receiving space, and the first connecting member 30 and the second connecting member 40 are arranged in parallel in the receiving space. 40 can reciprocate along the axial direction of the accommodating space; the knob 50 is plugged into the mounting hole 121, and extends between the first connecting member 30 and the second connecting member 40; the two sides of the knob 50 are respectively connected to the first connecting member 30 and the second connecting member 40, and are used to drive the first connecting member 30 and the second connecting member 40 to move toward or away from each other; and the headband 20, the headband 20 is arranged on the side wall of the hollow shell 10; the two ends of the headband 20 respectively pass through the two through holes, and are respectively connected to the first connecting member 30 and the second connecting member 40.

[0034] The present embodiment discloses a head-mounted device with adjustable tightness and easy operation, which is provided with a hollow shell 10 for wearing on the top of the user's head, and is also provided with a first connector 30, a second connector 40 and a headband 20. The headband 20 passes through the through hole and is connected with the first connector 30 and the second connector 40, so that the entire head-mounted device can be tightly fixed on the wearer's head to reduce movement and shaking; the first connector 30 and the second connector 40 are connected with the headband 20 to form a ring for enclosing the user's head. The user can use the knob 50 to move the first connector 30 and the second connector 40 toward or away from each other, that is, adjust the length of the overlapping part between the first connector 30 and the second connector 40, without the need for additional tools or operations, thereby achieving more precise tightness adjustment, flexibly applicable to users of various head circumferences, and can be operated by touch without naked eye observation, which is simple and convenient. Reduce the sliding and shaking of the head-mounted device and provide better stability.

[0035] Exemplarily, after the user puts on the head-mounted device, if the user feels that the enclosure between the head and the head is not firm enough, the knob 50 can be used to adjust the first connecting member 30 and the second connecting member 40 to move in the same direction, that is, the length of the overlapping portion between the first connecting member 30 and the second connecting member 40 increases, so that the enclosure structure in contact with the head is tightened as a whole; if the user feels that too much pressure is exerted on the head after putting it on, that is, the enclosure is too tight, the knob 50 can be used to adjust the first connecting member 30 and the second connecting member 40 to move in opposite directions, that is, the length of the overlapping portion between the first connecting member 30 and the second connecting member 40 decreases, so that the enclosure structure in contact with the head becomes loose as a whole and is adjusted to a degree suitable for the head circumference.

[0036] This head-mounted device can still maintain stability and comfort during long-term use. By using this head-mounted device, the tightness of the head-mounted device can be flexibly adjusted according to the head circumference of different wearers to obtain better wearing comfort and stability.

[0037] like Figure 5 and Figure 6 As shown, as another implementation manner of the present embodiment, the first connecting member 30 is disclosed to be provided with a first strip-shaped through hole 31, and a first rack 311 is provided on the side wall of the first strip-shaped through hole 31 along the length direction; the second connecting member 40 is provided with a second strip-shaped through hole 41, and a second rack 411 is provided on the side wall of the second strip-shaped through hole 41 along the length direction, the first rack 311 and the second rack 411 are arranged opposite to each other, the knob 50 includes an adjusting gear 51, and the adjusting gear 51 is rotatably arranged in the first strip-shaped through hole 31 and the second strip-shaped through hole 41, and a ring gear portion 511 is arranged on the circumference of the adjusting gear 51, the first rack 311 and the second rack 411 are respectively meshed with opposite sides of the ring gear portion 511, the adjusting gear 51 is used to make the first connecting member 30 and the second connecting member 40 move toward or away from each other, and the tightness of the head circumference can be adjusted by rotating the adjusting gear 51, which is easy to operate and convenient and quick.

[0038] Specifically, the length of the first rack 311 and the second rack 411 disclosed in this embodiment is the stroke length that the adjusting gear 51 can adjust. The adjusting gear 51 meshes the first rack 311 and the second rack 411 to increase or decrease the length of the overlapping portion thereof. Here, the length of the first rack 311 and the second rack 411 is not limited and can be set according to actual usage requirements.

[0039] Specifically, the first connecting member 30 and the second connecting member 40 disclosed in this embodiment are made of PP material, which has excellent softness and plastic strength. They can move toward each other driven by the adjusting gear 51 to tighten the head circumference size, or move away from each other driven by the adjusting gear 51 to loosen the head circumference size.

[0040] It should be noted that, in this embodiment, only the materials of the first connecting member 30 and the second connecting member 40 are exemplified, but the protection scope of the present invention is not limited thereto. Other types of materials can achieve the technical effects disclosed in this application and, as equivalent replacements for the concept of the present invention, should also be within the protection scope of this application.

[0041] Specifically, the first connector 30 and the second connector 40 disclosed in this embodiment are arranged in an arc shape, and the two free ends are connected to the head mounted device to form a ring shape surrounding the user's head circumference. The first connector 30 and the second connector 40 are also provided with hollow grooves, and the provision of the hollow grooves can reduce the weight of the first connector 30 and the second connector 40, and reduce the difficulty of wearing.

[0042] Specifically, the first rack 311 and the second rack 411 disclosed in this embodiment are arranged opposite to each other. Figure 2 As shown, the first rack 311 is arranged on the upper side of the first bar-shaped through hole 31 and on the left side of the adjusting gear 51, and the second rack 411 is arranged on the lower side of the second bar-shaped through hole 41 and on the right side of the adjusting gear 51. The two are arranged opposite to each other and mesh with the adjusting gear 51; that is, when the adjusting gear 51 rotates clockwise, the first connecting member 30 and the second connecting member 40 move toward each other; when the adjusting gear 51 rotates counterclockwise, the first connecting member 30 and the second connecting member 40 move away from each other to achieve tightness adjustment.

[0043] like Figure 4 , Figure 5 and Figure 6 As shown, as another implementation of the present embodiment, a ratchet ring 1211 is disclosed on the side wall of the mounting hole 121, wherein the knob 50 includes a mounting cover 52, which is arranged on the side of the mounting hole 121 away from the accommodating space, that is, the mounting cover 52 is arranged on the outside for the convenience of the user to touch and rotate, and a center shaft 521 is arranged on the side of the mounting cover 52 facing the accommodating space, and the adjusting gear 51 is sleeved on the center shaft 521, and the mounting cover 52 is used to drive the adjusting gear 51 to rotate. The user can drive the center shaft 521 and the adjusting gear 51 sleeved on the center shaft 521 to rotate through the mounting cover 52, so as to flexibly adjust the movement of the first connecting member 30 and the second connecting member 40.

[0044] Specifically, the adjusting gear 51 disclosed in this embodiment is fixedly connected to the mounting cover 52, the central rotating shaft 521 is provided with a support column protruding along its radial direction, the adjusting gear 51 is provided with a central hole for inserting the central rotating shaft 521, and the side wall of the central hole is provided with a support groove adapted to the support column, the adjusting gear 51 and the mounting cover 52 are fixedly connected via the support column and the support groove. It should be noted that the fixed connection method between the adjusting gear 51 and the central rotating shaft 521 is not limited to this.

[0045] Specifically, the knob 50 disclosed in this embodiment also includes the stop body 53, which is sleeved on the central rotating shaft 521 and rotates synchronously with the adjusting gear 51. A pawl portion 531 is provided on the outer peripheral wall of the stop body 53. The pawl portion 531 has a stop surface 5311 and a guide slope 5312. When the stop body 53 rotates in the direction toward the stop surface 5311, the stop surface 5311 engages with the ratchet ring 1211; when the stop body 53 rotates in the direction toward the guide slope 5312, the guide slope 5312 and the ratchet ring 1211 slide relative to each other.

[0046] Specifically, the stop surface 5311 of the pawl portion 531 disclosed in this embodiment engages with the ratchet ring 1211 to play a certain buffering role, which can limit the rotation of the central shaft 521, so that the adjustment gear 51 stays at a specific position. The user can conveniently fix the mounting cover 52 at the desired tightness position to avoid the adjustment of the adjustment gear 51 due to accidental rotation during use, and prevent the first connector 30 and the second connector 40 from loosening by themselves. Even if the head-mounted device is affected by movement or external force, the first connector 30 and the second connector 40 can be stably maintained at the desired tightness position and are not prone to loosening or sliding.

[0047] Specifically, the guide slope 5312 disclosed in this embodiment slides relative to the ratchet ring 1211 and is configured so that the first connecting member 30 and the second connecting member 40 move toward each other, while the stop surface 5311 and the ratchet ring 1211 are engaged with each other and are configured so that the first connecting member 30 and the second connecting member 40 move away from each other. Because the first connecting member 30 and the second connecting member 40 may loosen themselves, they will not shrink by themselves.

[0048] Specifically, as another implementation mode of this embodiment, the angle between the guide bevel 5312 and the stop body 53 is an acute angle. When rotating toward the direction of the guide bevel 5312, the angle between the guide bevel 5312 and the stop body is an acute angle and no contact surface is generated. The ratchet ring 1211 does not limit the rotation of the stop body 53 toward the guide bevel 5312; the angle between the stop surface 5311 and the stop body 53 is a right angle or an obtuse angle. When rotating toward the direction of the stop surface 5311, the stop surface 5311 and the ratchet ring 1211 generate a contact surface, so that the pawl portion 531 is engaged with the ratchet ring 1211, thereby limiting the rotation of the stop body 53.

[0049] For example, Figure 5 As shown, when the first connecting member 30 and the second connecting member 40 loosen by themselves, the adjusting gear 51 will be driven to rotate clockwise. At this time, due to the engagement of the stop surface 5311 and the ratchet ring 1211, the adjusting gear 51 is prevented from rotating, that is, the first connecting member 30 and the second connecting member 40 are prevented from loosening by themselves.

[0050] Specifically, as another implementation of this embodiment, the stop body 53 and the adjusting gear 51 are integrally formed. When the user adjusts the mounting cover 52, the stop body 53 and the adjusting gear 51 rotate synchronously to more accurately adjust the tightness of the head circumference. The connection between the stop body 53 and the adjusting gear 51 is more secure, which reduces the possibility of loosening and swinging, and improves the assembly quality and service life.

[0051] Specifically, the stop body 53 disclosed in this embodiment is integrally formed with the pawl portion 531 , so that when the pawl portion 531 is engaged with the ratchet ring 1211 , it is not easy to damage the pawl portion 531 , thereby extending the service life of the pawl portion 531 .

[0052] Specifically, as another implementation of this embodiment, at least two ratchet parts 531 are arranged at intervals along the circumferential direction on the outer edge of the ratchet ring 1211. The arrangement of the two ratchet parts 531 can provide better connection stability, increase the abutment area, and evenly share the bearing force of the connector. The circumferential spacing of the two ratchet parts 531 can better resist the influence of external forces and reduce the risk of loosening of the first connector 30 and the second connector 40. This can ensure that the head-mounted device remains stable during use and is not prone to loosening or falling off.

[0053] like Figure 7 , Figure 8 and Fig. 9As shown, as another implementation of this embodiment, the installation cover 52 is provided with a rib column 522 on one side facing the accommodating space, and the stop body 53 is provided with an arc groove 532 adapted to the rib column 522, and the rib column 522 is inserted into the arc groove 532. When the installation cover 52 rotates, the rib column 522 abuts against the arc groove 532 to push the stop body 53 to rotate. The purpose of providing the rib column 522 is to enable the stop body 53 to rotate when adjusting the installation cover 52, and also to increase the connection mode between the installation cover 52 and the stop body 53, so that the structure is more compact and the connection is more firm.

[0054] Specifically, the ribs 522 and the arc grooves 532 disclosed in this embodiment are each provided with two, and the two ribs 522 and the two arc grooves 532 are arranged relative to each other. Through the positioning of the two ribs 522 and the guidance of the two arc grooves 532, the accurate alignment of the components during the assembly process can be ensured. During the rotation of the mounting cover 52, the two ribs 522 will contact the inner wall of the arc groove 532, pushing the stop body 53 to rotate.

[0055] Specifically, as another implementation of this embodiment, a push column 523 is further provided on the side of the mounting cover 52 facing the accommodating space, and a hook opening 533 is provided on the stop body 53. The end of the stop body 53 is bent toward the hook opening 533 to form a hook-shaped component 534, and the push column 523 is inserted into the hook opening 533. When the stop body 53 rotates in the direction toward the stop surface 5311, the push column 523 squeezes the hook-shaped component 534 inward to tighten it so that the stop surface 5311 is out of engagement with the ratchet ring 1211.

[0056] For example, Fig. 9 As shown, when the stop body 53 rotates in the clockwise direction, the push column 523 moves in the direction toward the hook-shaped part 534 and squeezes the hook-shaped part 534, so that the hook-shaped part 534 is deformed toward the axis of the stop body 53, thereby driving the pawl part 531 on the stop body 53 to also deform toward the axis of the stop body 53, so that the pawl part 531 is no longer engaged with the ratchet ring 1211 and is out of engagement. At this time, the first connecting member 30 and the second connecting member 40 can be adjusted to move toward or away from each other at will. When the mounting cover 52 is rotated to a suitable position, the rotational force is no longer applied to the stop body 53, and the push column 523 no longer squeezes the hook-shaped part 534, and the pawl part 531 and the ratchet ring 1211 resume the engagement state.

[0057] When rotating counterclockwise, the contact surface between the pawl portion 531 and the ratchet wheel ring 1211 is an inclined surface, and the pawl portion 531 does not produce a blocking effect. Therefore, the length of the overlapping portion can be easily achieved by rotating the mounting cover 52 with one hand, which is easy to operate.

[0058] Specifically, the push column 523 and the hook mouth 533 disclosed in this embodiment are each provided with two, which increases the reliability of the head-mounted device, and the hook-shaped part 534 and the pawl part 531 are arranged on the same radial direction of the non-return body, so that when the hook-shaped part 534 is deformed, the pawl part 531 is also deformed synchronously to release the engaging state.

[0059] Specifically, the push column 523 and the rib column 522 disclosed in this embodiment are arranged in sequence at intervals. The arrangement of the push column 523 can also reduce the abutment force between the pawl portion 531 and the ratchet ring 1211, prevent the pawl portion 531 from breaking, and extend the service life of the pawl portion 531.

[0060] Specifically, the stop body 53 disclosed in this embodiment is an elastic stop body 53. When the pawl portion 531 is subjected to a large rotational force, the pawl portion 531 can produce elastic deformation to prevent the pawl portion 531 from breaking. By setting the knob 50, the setting of hardware is reduced, which can reduce the weight of the head-mounted device.

[0061] like Figure 5 and Figure 8 As shown, as another implementation of this embodiment, the hollow shell 10 includes a wearable shell 11 and an assembly shell 12, the assembly shell 12 cooperates with the wearable shell 11 to form the accommodating space, the headband 20 is arranged on the side wall of the wearable shell 11, and the mounting hole 121 is opened on the assembly shell 12; a first guide column 122 and a second guide column 123 are arranged on the side of the accommodating space of the assembly shell 12, the first guide column 122 and the second guide column 123 are arranged at intervals along the width direction of the assembly shell 12, and the first connecting member 30 or the second connecting member 40 is arranged between the first guide column 122 and the second guide column 123, that is, the first connecting member 30 or the second connecting member 40 is clamped between the first guide column 122 and the second guide column 123, so as to facilitate the first connecting member 30 and the second connecting member 40 to move along the length direction of the assembly shell 12, thereby improving the efficiency of the first connecting member 30 and the second connecting member 40 to move toward or away from each other.

[0062] Specifically, the first guide column 122 disclosed in this embodiment is provided with a first positioning groove 1221, and the wearable shell 11 is provided with a first positioning column 111 adapted to the first positioning groove 1221, and the first positioning column 111 is inserted in the first positioning groove 1221; and / or the second guide column 123 is provided with a second positioning groove 1231, and the wearable shell 11 is provided with a second positioning column 112 adapted to the second positioning groove 1231, and the second positioning column 112 is inserted in the second positioning groove 1231, so that the wearable shell 11 is fixedly connected to the assembly shell 12, thereby improving the overall reliability.

[0063] In summary, the present application discloses a head-mounted device with adjustable tightness and easy operation, which is provided with a hollow shell 10 for wearing on the top of the user's head, and is also provided with a first connector 30, a second connector 40 and a headband 20. The headband 20 passes through a through hole and is connected to the first connector 30 and the second connector 40, so that the entire head-mounted device can be tightly fixed on the wearer's head to reduce movement and shaking; the first connector 30 and the second connector 40 are connected to the headband 20 to form a ring for enclosing the user's head. The user can use the knob 50 to move the first connector 30 and the second connector 40 toward or away from each other, that is, adjust the length of the overlapping part between the first connector 30 and the second connector 40, without the need for additional tools or operations, thereby achieving more precise tightness adjustment, flexibly applicable to users of various head circumferences, and can be operated by touch without naked eye observation, which is simple and convenient. Reduce the sliding and shaking of the head-mounted device and provide better stability.

[0064] This head-mounted device has stability and comfort during long-term use. By using this head-mounted device, the tightness of the head-mounted device can be flexibly adjusted according to the head circumference of different wearers to obtain better wearing comfort and stability.

[0065] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application may be combined with each other.

[0066] It should be noted that the present invention takes a head-mounted device as an example to introduce the specific structure and working principle of the present invention, but the application of the present invention is not limited to the head-mounted device, and can also be applied to the production and use of other similar workpieces.

[0067] It should be understood that the present invention is not limited to the precise structure described above and shown in the drawings, and various modifications and changes can be made without departing from the scope thereof. The scope of the present invention is limited only by the appended claims.

[0068] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A head mounted device, characterized in that: include: A hollow shell, wherein a containing space is formed in the hollow shell, and two through holes are arranged opposite to each other on the inner side wall of the hollow shell; a mounting hole is arranged on the outer side wall of the hollow shell; wherein the mounting hole and the through hole are both connected to the containing space; A first connecting member and a second connecting member, wherein the first connecting member and the second connecting member are arranged in parallel in the accommodating space, and both the first connecting member and the second connecting member can reciprocate along the axial direction of the accommodating space; A knob is plugged into the mounting hole and extends between the first connecting member and the second connecting member; two sides of the knob are respectively connected to the first connecting member and the second connecting member, and are used to drive the first connecting member and the second connecting member to move toward or away from each other; and A headband is arranged on the side wall of the hollow shell; two ends of the headband pass through the two through holes respectively and are connected to the first connecting member and the second connecting member respectively.

2. The head mounted device according to claim 1, wherein: The first connecting member is provided with a first strip-shaped through hole, and a first rack is provided on the side wall of the first strip-shaped through hole along the length direction; the second connecting member is provided with a second strip-shaped through hole, and a second rack is provided on the side wall of the second strip-shaped through hole along the length direction; Among them, the first rack and the second rack are arranged opposite to each other, the knob includes an adjusting gear, the adjusting gear is rotatably arranged in the first bar-shaped through hole and the second bar-shaped through hole, a gear ring part is arranged on the circumference of the adjusting gear, and the first rack and the second rack are respectively meshed with opposite sides of the gear ring part.

3. The head mounted device according to claim 2, wherein: A ratchet ring is provided on the side wall of the mounting hole, wherein the knob comprises: A mounting cover is arranged on a side of the mounting hole away from the accommodating space, the mounting cover is provided with a central rotating shaft, the central rotating shaft is sleeved with the adjusting gear, and the mounting cover is used to drive the adjusting gear to rotate; A stop body, wherein the stop body is sleeved on the central rotating shaft and rotates synchronously with the adjusting gear. A pawl portion is provided on the outer peripheral wall of the stop body, and the pawl portion has a stop surface and a guide inclined surface. When the stop body rotates in a direction toward the stop surface, the stop surface engages with the ratchet ring; when the stop body rotates in a direction toward the guide inclined surface, the guide inclined surface and the ratchet ring slide relative to each other.

4. The head mounted device according to claim 3, wherein: The included angle between the guiding inclined surface and the stop body is an acute angle; The included angle between the stop surface and the stop body is a right angle or an obtuse angle.

5. The head mounted device according to claim 3, wherein: A rib column is arranged on the side of the mounting cover facing the accommodating space, and an arc groove matched with the rib column is arranged on the stop body. The rib column is inserted into the arc groove. When the mounting cover rotates, the rib column abuts against the arc groove to push the stop body to rotate.

6. The head mounted device according to claim 3, wherein: A push column is also provided on the mounting cover on a side facing the accommodating space, a hook opening is provided on the stop body, an end of the stop body is bent toward the hook opening to form a hook-shaped component, and the push column is passed through the hook opening. When the stop body rotates in a direction toward the stop surface, the push column squeezes the hook-shaped component to tighten inwardly so that the stop surface and the ratchet ring are out of engagement.

7. The head mounted device according to claim 3, characterized in that: The stop body and the adjusting gear are integrally formed; and / or The stop body and the pawl portion are integrally formed.

8. The head mounted device according to claim 4, wherein: At least two ratchet parts are arranged at intervals along the circumferential direction on the outer edge of the ratchet ring.

9. The head mounted device according to claim 1, wherein: The hollow shell comprises a wearable shell and an assembly shell, the assembly shell cooperates with the wearable shell to form the accommodating space, the headband is arranged on the wearable shell, and the mounting hole is provided on the assembly shell; Among them, a first guide column and a second guide column are arranged on one side of the assembly shell facing the accommodating space, the first guide column and the second guide column are arranged at intervals along the width direction of the assembly shell, and the first connecting member or the second connecting member is arranged between the first guide column and the second guide column.

10. The head mounted device according to claim 9, wherein: The first guide column is provided with a first positioning groove, the wearable shell is provided with a first positioning column adapted to the first positioning groove, and the first positioning column is inserted into the first positioning groove; and / or The second guide column is provided with a second positioning groove, the wearable shell is provided with a second positioning column adapted to the second positioning groove, and the second positioning column is inserted in the second positioning groove.

Images