CN113504649A

CN113504649A - Adjustable headband and head-mounted equipment

Info

Publication number: CN113504649A
Application number: CN202110773057.5A
Authority: CN
Inventors: 郭延兵
Original assignee: Goertek Optical Technology Co Ltd
Current assignee: Goertek Optical Technology Co Ltd
Priority date: 2021-07-08
Filing date: 2021-07-08
Publication date: 2021-10-15

Abstract

The invention provides an adjustable headband and a head-wearing device, wherein the adjustable headband comprises a shell, a side headband, a gear, a clutch component, a one-way locking component and a driving component, the two side headband can move in an opposite/opposite direction, and the side headband is provided with a rack part; the gear is meshed with the rack parts at the two side parts, and the gear is driven to rotate when the two side parts move towards or away from each other; the clutch component is connected with the gear and rotates along with the gear, and the clutch component can move to a first position and a second position relative to the gear along the axial direction; the clutch component is locked in one direction when in the first position, and the one-way locking component is separated from the clutch component when in the second position; the drive assembly drives the clutch member to move to the first position and the second position. The adjustable headband can realize bidirectional rotatable or unidirectional locking of the clutch component, so that the headband on two sides can be controlled to move in the opposite direction/opposite direction or be locked in the unidirectional direction, and the adjustment of the headband is convenient.

Description

Adjustable headband and head-mounted equipment

Technical Field

The invention relates to the technical field of head-mounted equipment, in particular to an adjustable headband and head-mounted equipment.

Background

Because the head-wearing equipment such as VR glasses and AR glasses is worn on the head of a user in use, the front equipment main body and the rear head band form a closed ring structure, in order to be compatible with different head circumference sizes, the circumference of some head-wearing equipment can be adjusted, the adjusting range can be compatible with a sufficient head circumference size range, and a certain clamping force is provided.

Since the main functional components and the electrical components of the head-mounted device are mainly arranged in the front device body, the perimeter of the head-mounted device can be adjusted mainly due to the fact that the rear head band of the head-mounted device can be adjusted, namely the adjusting structure is arranged on the rear head band, in order to balance the weight and avoid the front weight and the rear weight. However, in the prior art, the rear headband of the head-wearing device is complex in adjustment structure and not easy to operate, so that the user experience is reduced, and fine adjustment cannot be continued after the rear headband is adjusted to a certain size, so that the situation that the adjustment is too large or too small may exist. In addition, the existing adjusting structure occupies a large space, and cannot meet the development trend of miniaturization and light weight of future head-mounted equipment.

The above information disclosed in this background section is only for enhancement of understanding of the background of the application and therefore it may comprise prior art that does not constitute known to a person of ordinary skill in the art.

Disclosure of Invention

The invention provides an adjustable headband and a head-mounted device, which are simple in structure, convenient to operate and small in occupied space, and meanwhile, fine adjustment can be continuously carried out after the headband is preset to a certain size until the headband and the head-mounted device are self-locked after the headband and the head-mounted device reach the proper size.

In order to solve the technical problems, the adjustable headband provided by the invention adopts the following technical scheme: an adjustable headband comprising:

a housing having a mounting cavity formed therein;

the two side head bands are respectively positioned at the left side and the right side of the shell, the side head bands are inserted into the mounting cavity and can be inserted into and pulled out of the shell, the two side head bands can move in an opposite/reverse direction, and rack parts are arranged on the parts of the side head bands positioned in the mounting cavity;

the gear is arranged in the mounting cavity and is meshed with the rack parts of the two side head bands at the same time, and the two side head bands drive the gear to rotate when moving in the opposite direction/opposite direction;

the clutch component is arranged in the mounting cavity, is connected with the gear and can rotate along with the gear, and can move to a first position and a second position relative to the gear along the axial direction;

the one-way locking component is fixedly connected with the shell, when the clutch component is at the first position, the one-way locking component is connected with the clutch component to lock the clutch component in a one-way mode, and when the clutch component is at the second position, the one-way locking component is separated from the clutch component;

a drive assembly for driving the clutch member to move to the first position and the second position.

When the clutch component is locked in one direction, the two side head belts can only move towards each other.

A plurality of first limit structures are distributed on the clutch component along the circumferential direction of the clutch component, a plurality of second limit structures are correspondingly distributed on the gear along the circumferential direction of the gear, and the first limit structures and the second limit structures are matched to enable the clutch component to be connected with the gear and can move along the axial direction relative to the gear.

The gear is provided with a guide groove arranged along the axial direction of the gear, the second limiting structure is formed on the inner wall of the guide groove, the first limiting structure is formed on the circumferential outer wall of the clutch component, and the clutch component is embedded into the guide groove along the axial direction and is in guide fit with the guide groove.

The clutch component is provided with a plurality of first locking teeth along the circumferential direction, the one-way locking component is provided with a plurality of second locking teeth along the circumferential direction, the first locking teeth and the second locking teeth are triangular teeth with one side tooth surface being a straight surface and the other side tooth surface being an inclined surface, the inclined surface tooth surface of the first locking teeth is matched with the inclined surface tooth surface of the second locking teeth, when the clutch component is connected with the one-way locking component, the first locking teeth are meshed with the second locking teeth, and the straight surface tooth surface of the first locking teeth is jointed with the straight surface tooth surface of the second locking teeth to realize one-way locking of the clutch component.

The number of the first locking teeth is Z₁The number of the second locking teeth is Z₂，Z₁=nZ₂And n is a natural number.

And the one-way locking component and the clutch component are provided with guide structures which are matched with each other so as to guide the axial movement of the clutch component.

The gear, the clutch component and the one-way locking component are coaxially arranged, and the clutch component is located between the gear and the one-way locking component.

The drive assembly includes:

the key is arranged on the shell in a pressing mode and is connected with the clutch component, and when the key is pressed down, the clutch component is driven to move to the second position;

and the elastic component is used for providing restoring force to drive the clutch component to move to the first position and drive the key to reset when the key is released.

The invention also provides a head-mounted device which comprises the adjustable headband.

Compared with the prior art, the invention has the following advantages and positive effects:

1. according to the adjustable headband, the headband at the two sides can move in a reverse/reverse manner under the action of external force (expansion of the head or pulling of the hand), when the headband and the headband move in the reverse direction, the wearing space enclosed by the headband and the headband is reduced, and when the headband moves in the reverse direction, the wearing space is increased, so that the headband is adjustable, and the headband adapts to the size of the head of a wearer once to provide corresponding clamping force;

2. the headband at the two sides moves in the opposite direction/opposite direction to drive the gear to rotate, and the driving assembly is arranged to control the clutch component and the one-way locking component to be jointed or separated, so that the clutch component can be bidirectionally rotated or locked in one direction, the rotation of the clutch component is driven by the gear which is driven by the headband at the two sides, so that the headband at the two sides can be controlled to move in the opposite direction/opposite direction or move only in the opposite direction, when the headband can move only in the opposite direction or move only in the opposite direction, namely the headband can be adjusted to be locked in one direction, when the headband is worn, the driving assembly can be operated to move the clutch component to the second position, at the moment, the clutch component is separated from the one-way locking component, the gear can drive the clutch component to rotate in two directions, a user can preset the headband to a certain size according to the self requirement, and then the driving assembly controls the clutch component to move to the first position, the headband is locked in a single direction, so that a user can perform fine adjustment in the direction which is not locked conveniently, the headband is still locked in the single direction after fine adjustment in place, and the wearing reliability is effectively guaranteed;

3. the gear is meshed with the rack parts of the head bands at the two side parts to realize the adjustment of the head band, and the fine adjustment of the head band can be realized by reasonably setting the tooth shape and the tooth number;

4. the novel head-wearing device has the advantages of few structural components, simple structure, convenience in adjustment and small occupied space, and is particularly suitable for the development trend of miniaturization and light weight of future head-wearing equipment.

Other features and advantages of the present invention will become more apparent from the following detailed description of the invention when taken in conjunction with the accompanying drawings.

Drawings

FIG. 1 is a perspective view of a head-mounted device in an embodiment of the present invention;

FIG. 2 is a perspective view of an adjustable headband in accordance with an embodiment of the present invention;

FIG. 3 is an exploded view of FIG. 2;

FIG. 4 is a perspective view of an embodiment of the present invention with the adjustable headband omitted from the back shell of the shell;

FIG. 5 is an enlarged view of portion A of FIG. 4;

FIG. 6 is a view of the side head band and gear configuration in accordance with an embodiment of the present invention;

FIG. 7 is a perspective view of a gear in an embodiment of the present invention;

FIG. 8 is a perspective view of a clutch member according to an embodiment of the present invention;

FIG. 9 is an assembled perspective view of a gear and clutch assembly in an embodiment of the present invention;

FIG. 10 is a perspective view of a one-way locking feature of an embodiment of the present invention;

FIG. 11 is an assembled perspective view of the clutch member and the one-way locking member in the embodiment of the present invention;

FIG. 12 is an assembled structural view of a gear, a clutch member, a one-way locking member and a drive assembly in an embodiment of the present invention;

FIG. 13 is a sectional view taken along line B-B of FIG. 12;

reference numerals:

1. an adjustable headband; 100. a housing; 110. a mounting cavity; 120. a front housing; 130. a rear housing; 200. a gear; 210. a second limit structure; 220. a guide groove; 300. a clutch; 310. a first limit structure; 320. a first locking tooth; 321. a straight tooth surface; 322. a bevel flank; 330. a guide post; 400. a one-way locking member; 410. a second locking tooth; 411. a straight tooth surface; 412. a bevel flank; 420. a guide hole; 500. a drive assembly; 510. pressing a key; 511. positioning a groove; 520. an elastic member; 600. a left headband; 610. a left rack portion; 700. a right headband; 710. a right rack section;

2. a main body of the glasses.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that in the description of the present invention, the terms of direction or positional relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, which are only for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Referring to fig. 1 to 6, the adjustable headband 1 in the present embodiment may be applied to a headset such as VR glasses, AR glasses, or headphones, as shown in fig. 1, that is, VR glasses with an adjustable headband 1. The adjustable headband 1 in this embodiment mainly includes a housing 100, two side bands, a gear 200, a clutch 300, a one-way locking member 400, and a driving assembly 500.

The housing 100 has a mounting cavity 110 formed therein, specifically, in this embodiment, the housing 100 includes a front shell 120 and a rear shell 130, and the front shell 120 and the rear shell 130 are fastened or connected in other forms to jointly define the mounting cavity 110, but the housing 100 may also be formed by fastening or connecting two housing parts arranged up and down. The left end of the casing 100 is provided with a left opening, the right end is provided with a right opening, and the left opening and the right opening are both communicated with the installation cavity 110.

When the adjustable headband of this embodiment is applied to a head-mounted device and worn on the head of a user, the casing 100 is attached to the rear portion of the head, in order to improve the wearing comfort, in this embodiment, the outer contour of the casing 100 is an arc-shaped structure similar to the contour of the rear side of the head, and a soft cushion layer, such as a fabric layer, may be disposed on the front side surface of the front casing 110, that is, the portion directly contacting with the back of the head of the user.

For convenience of description, the two side head bands are respectively called a left side head band 600 and a right side head band 700, the left side head band 600 is located at the left side portion of the casing 100, the right side head band 700 is located at the right side portion of the casing 100, the right end of the left side head band 600 is inserted into the mounting cavity 110 through the left opening, and the left side head band 600 can move in an inserting and pulling manner relative to the casing 100. Specifically, the right headband 700 is inserted into the mounting cavity 110 through the right opening at the left end thereof, the right headband 700 can be inserted into and pulled out of the housing 100, the left headband 600 and the right headband 700 can move in the opposite/opposite directions, that is, the left headband 600 is pulled out to the left relative to the housing 100, and when the right headband 700 is pulled out to the right, the left headband 600 and the right headband 700 move in the opposite directions, the left headband 600 is inserted to the right relative to the housing 100, and when the right headband 700 is inserted to the left, the left headband 600 and the right headband 700 move in the opposite directions, and the portions of the left headband 600 and the right headband 700 located in the mounting cavity 110 are both provided with a rack portion, and for convenience of description, the rack portion on the left headband 600 is referred to as a left rack portion 610, and the rack portion on the right headband 700 is referred to as a right rack portion 710.

The left headband 600 and the right headband 700 are each a flat band structure and each extend along the length of the adjustable headband 1. In order to simultaneously engage the left headband 600 and the right headband 700 with the gear 200, the left rack portion 610 and the right rack portion 710 are in a vertically opposed or a longitudinally opposed positional relationship, and in the present embodiment, the axial direction of the gear 200 is adjustable in the longitudinal direction of the headband 1, so that the left rack portion 610 and the right rack portion 710 are in a vertically opposed positional relationship, the left rack portion 610 is positioned below the right rack portion 710, that is, the left rack portion 610 engages with the lower portion of the gear 200, and the right rack portion 710 engages with the upper portion of the gear 200, as shown in fig. 6.

The gear 200 is disposed in the mounting cavity 110 and engaged with the left rack portion 610 and the right rack portion 710, and when the left headband 600 and the right headband 700 move toward or away from each other, the gear 200 is driven to rotate, i.e., the gear 200 is a passive rotating member. Specifically, when the left headband 600 and the right headband 700 move toward each other, the gear 200 is driven to rotate counterclockwise, and when the left headband 600 and the right headband 700 move away from each other, the gear 200 is driven to rotate clockwise.

The clutch component 300 is arranged in the mounting cavity 110 and connected with the gear 200 so as to be driven by the gear 200 to rotate, namely, the clutch component 300 is also a driven rotating component, when the left headband 600 and the right headband 700 move towards or away from each other, the gear 200 is driven to rotate, and the gear 200 rotates to drive the clutch component 300 to rotate synchronously; meanwhile, in the present embodiment, the clutch member 300 is axially movable to the first position and the second position with respect to the gear 200.

And the one-way locking component 400 is fixedly connected to the casing 100, specifically is fixedly arranged on the front casing 120 and is also positioned in the installation cavity 110. When the clutch member 300 is in the first position, the one-way locking member 400 is engaged with the clutch member 300 to perform one-way locking on the clutch member 300, that is, the clutch member 300 can only rotate in one direction, for example, only can rotate counterclockwise or only can rotate clockwise, under the driving of the gear 200; when the clutch member 300 is in the second position, the one-way locking member 400 is disengaged from the clutch member 300, and the clutch member 300 can rotate clockwise or counterclockwise under the driving of the gear 200.

And a driving assembly 500 for driving the clutch member 300 to move axially to the first position and the second position with respect to the gear 200.

In this embodiment, when the left headband 600 and the right headband 700 move in opposite directions to shorten the length of the adjustable headband 1, the gear 200 is driven to rotate counterclockwise, and when the adjustable headband 1 moves in opposite directions to lengthen the length of the adjustable headband 1, the gear 200 is driven to rotate clockwise. In specific implementation, the driving assembly 500 is first driven to move the clutch component 300 to the second position, i.e. to disengage from the one-way locking component 400, so that the clutch component 300 can be rotated bidirectionally, at this time, the left headband 600 and the right headband 700 move back to back under the external force (expansion of the head or pulling of the hand) to drive the gear 200 to rotate clockwise, the clutch component 300 rotates clockwise, after the adjustable headband 1 is adjusted to a suitable length, the driving assembly 500 is driven to move the clutch component 300 to the first position, the clutch component 300 is engaged with the one-way locking component 400, the clutch component 300 can only rotate in one direction, and then the gear 200 driving the clutch component 300 to rotate can only rotate in one direction, further, the left headband 600 and the right headband 700 can only move in opposite directions or opposite directions, so that the adjustable headband 1 can only be further adjusted in length or shortened, the locking device realizes further fine adjustment, correspondingly realizes the locking of the adjustable headband in the other adjusting direction, and prevents the adjusted headband size from changing again under the action of external force.

The adjustable headband of the embodiment can realize bidirectional rotation or unidirectional locking of the clutch component 300 by arranging the driving component 500 to control the connection or disconnection of the clutch component 300 and the unidirectional locking component 400, because the rotation of the clutch component 300 is driven by the gear 200, the rotation of the gear 200 is driven by the headband at two sides, so that the headband at two sides can be controlled to move in the opposite direction or in the opposite direction, when the headband can only move in the opposite direction or in the opposite direction, the adjustable headband 1 can be locked in one direction, when the headband is worn, the driving component 500 can be operated to move the clutch component 300 to the second position, a user can preset the headband to a certain size according to the requirement of the user, then the driving component 500 controls the clutch component 300 to move to the first position, so that the headband is locked in one direction, and therefore, the user can finely adjust the headband in the unlocked direction, the headband is locked in one direction after fine adjustment, and the wearing reliability is effectively guaranteed.

Since the adjustable headband 1 of the present embodiment is usually pre-adjusted to a size slightly larger than the head circumference of a user in order to facilitate the wearing of the adjustable headband 1 on the head of the user when the adjustable headband 1 of the present embodiment is applied to VR glasses or other head-wearing devices as shown in fig. 1, and then fine adjustment is performed in a direction of reducing the length of the adjustable headband 1, when the clutch component 300 is locked in one direction in the present embodiment, the left headband 600 and the right headband 700 can only move in opposite directions, that is, the direction in which the clutch component 300 is locked and rotated is the direction in which the left headband 600 and the right headband 700 can move in opposite directions, and at this time, the adjustable headband 1 can only be further shortened, thereby improving the wearing comfort and providing the wearing clamping force.

Referring to fig. 7 to 9, a plurality of first limiting structures 310 are disposed on the clutch component 300 along the circumferential direction thereof, a plurality of second limiting structures 210 are correspondingly disposed on the gear 200 along the circumferential direction thereof, and the first limiting structures 310 and the second limiting structures 210 are matched to enable the clutch component 300 to be connected with the gear 200 and to move axially relative to the gear 200.

Specifically, as shown in fig. 7 to 9, the first limiting structure 310 is a bar-shaped limiting protrusion, the extending direction of which is parallel to the axial direction of the clutch component 300, the second limiting structure 210 is a bar-shaped limiting groove correspondingly, the extending direction of which is parallel to the axial direction of the gear 200, and the first limiting structure 310 and the second limiting structure 210 are in sliding fit along the axial direction, so that the clutch component 300 can move along the axial direction relative to the gear 200, and the first limiting structure 310 and the second limiting structure 210 are not disengaged all the time when the clutch component 300 moves along the axial direction relative to the gear 200, so that the gear 200 can drive the clutch component 300 to rotate synchronously when rotating.

Further, a guide groove 220 is formed on the gear 200 along the axial direction thereof, a second limit structure 210 is formed on the inner wall of the guide groove 220, a first limit structure 310 is particularly formed on the circumferential outer wall of the clutch member 300, and the clutch member 300 is embedded into the guide groove 220 along the axial direction and is in guide fit with the guide groove 220. On one hand, the guide groove 220 can guide the axial movement of the clutch component 300, and on the other hand, the guide groove helps to reduce the overall volume of the clutch component 300 and the gear 200 after assembly and connection, and reduces the occupied space.

Referring to fig. 10 and 11, in conjunction with fig. 8, in this embodiment, a plurality of first locking teeth 320 are further disposed on the clutch member 300 along the circumferential direction thereof, and a plurality of second locking teeth 410 are disposed on the one-way locking member 400 along the circumferential direction thereof, as shown in fig. 8, the first locking teeth 320 are right triangle teeth having one side tooth surface being a straight tooth surface 321 and the other side tooth surface being a sloping tooth surface 322, as shown in fig. 9, the second locking teeth 410 are also right triangle teeth having one side tooth surface being a straight tooth surface 411 and the other side tooth surface being a sloping tooth surface 412, that is, both of the right triangle teeth are not regular isosceles triangle teeth. At the same time, the beveled flank 322 of the first locking tooth 320 is matched to the beveled flank 412 of the second locking tooth 410, i.e. the angle of inclination is equal. When the clutch member 300 is engaged with the one-way locking member 400, the first locking tooth 320 is engaged with the second locking tooth 410, and the straight tooth face 321 of the first locking tooth 320 and the straight tooth face 411 of the second locking tooth 410 are adjacent and perform one-way locking on the clutch member 300 when the two are engaged, as shown in fig. 11, while the inclined tooth face 322 is inclined in the same direction as the inclined line of the inclined tooth face 412.

After the first locking tooth 320 is engaged with the second locking tooth 410, because the straight tooth surface 321 of the first locking tooth 320 is adjacent to the straight tooth surface 411 of the second locking tooth 410, when the clutch member 300 rotates in a direction that the straight tooth surface 321 of the first locking tooth 320 is close to the straight tooth surface 411 of the second locking tooth 410 until the straight tooth surface 321 is attached to the straight tooth surface 411, the straight tooth surface 411 can block the straight tooth surface 321 from further rotating, that is, the second locking tooth 410 can block the first locking tooth 320 from rotating, so that the clutch member 300 is locked in the direction; when the clutch member 300 rotates in the opposite direction, the inclined tooth surface 322 of the first locking tooth 320 contacts and engages with the inclined tooth surface 412 of the second locking tooth 410, and the first locking tooth 320 can smoothly pass over the second locking tooth 410, so that the clutch member 300 can rotate in this direction.

Since the minimum rotation unit of the clutch member 300 and the one-way rotation stopping member 400 is a distance of one tooth thickness, the fastening fine adjustment function of the adjustable headband 1 can be realized because the clutch member 300 and the gear 200 rotate together and the gear 200 has a rack part to move in a matching manner, the specific adjustment precision of the adjustable headband 1 is related to the number of the first locking teeth 320 on the clutch member 300, the more the number of the teeth is, the higher the adjustment precision is, however, because the clutch member 300 and the gear 200 rotate together, the more the number of the teeth is, the higher the adjustment precision isThe clutch member 300 has a small volume, and the first locking teeth 320 formed thereon in a large number may cause problems of thin teeth and low strength, and may not be easily realized. The number of the first locking tooth 320 and the second locking tooth 410 that can be engaged with each other should be multiple, that is, the number of the first locking tooth 320 is Z1, and the number of the second locking tooth 410 is Z1₂，Z₁=nZ₂N is a natural number, but in order to balance the adjustment precision of the adjustable headband 1, the strength of the clutch member 300, and the strength of the one-way locking member 400, n is preferably 2 or 3, for example, the number of teeth Z of the first locking teeth 320₁Taking the value 8, the number Z of the second locking teeth 410₂With the value of 4, two first locking teeth 320 are arranged between two adjacent second locking teeth 410.

In addition, the unidirectional locking member 400 and the clutch member 300 of the present embodiment are provided with guiding structures that are engaged with each other to guide the axial movement of the clutch member 300. As shown in fig. 8, 10 and 11, the guiding structure includes a guiding post 330 disposed on the clutch member 300 and a guiding hole 420 disposed on the one-way locking member 400, and the one-way locking member 400 and the clutch member 300 are engaged with the first locking tooth 320 through the second locking tooth 410 and are also guided and matched with the guiding post 330 through the guiding hole 420, so as to further ensure the movement accuracy of the clutch member 300, and thus, the adjustment accuracy of the adjustable headband 1 is advantageously ensured.

In this embodiment, referring to fig. 12 and 13, the gear 200, the clutch member 300, and the one-way locking member 400 are coaxially disposed, and the clutch member 300 is located between the gear 200 and the one-way locking member 400, so that the overall structure is compact, the occupied space is reduced as much as possible, and the miniaturization design of the head-mounted device is facilitated.

As for the driving assembly 500, as shown in fig. 1 to 5, and fig. 12 and 13, it includes a button 510 and an elastic member 520, the button 510 is disposed on the housing 100 and connected to the clutch member 300 in a pressing manner, and when the button 510 is pressed, the clutch member 300 is driven to move to the second position; the elastic member 520 is used to provide a restoring force to move the clutch member 300 to the first position when the button 510 is released, and to reset the button 510.

Specifically, the key 510 and the one-way locking member 400 are located on the same side of the clutch member 300, and are also coaxially disposed with the clutch member 300, and the axial direction is along the front-back direction for convenient operation, the guiding hole 420 is a through hole, the guiding column 330 passes through the guiding hole 420 and is connected with the key 510, specifically, a positioning groove 511 is formed on the key 510, the end of the guiding column 330 is inserted into the positioning groove 511, because the clutch member 300 is a member capable of rotating passively, the guiding column 330 and the positioning groove 511 are only inserted and matched, that is, the guiding column 330 can rotate relatively or move linearly along the axial direction in the positioning groove 511, and the key 510 limits the resetting movement thereof by means of the housing 100, and prevents the key from being separated from the housing 100.

The elastic member 520 is specifically a spring, and is disposed in the guide groove 220 of the gear 200 and sandwiched between the gear 200 and the clutch member 300, so as to facilitate installation and reduce space occupation, when the key 510 is pressed down to drive the clutch member 300 to move to the second position, the elastic member 520 is compressed, and when the key 510 is released, the elastic restoring force of the elastic member 520 drives the clutch member 300 to move to the first position, and at the same time, the key 510 is reset.

Meanwhile, the elastic member 520 can ensure that the clutch member 300 can smoothly rotate in one direction relative to the one-way locking member 400 when in the first position. Specifically, since the one-way locking member 400 is a fixedly disposed member, when the clutch member 300 is in the first position and the sloped flank 322 of the first locking tooth 320 thereof is in contact engagement with the sloped flank 412 of the one-way locking member 400, and the clutch member 300 is driven by the gear 200 to rotate unidirectionally with respect to the unidirectional locking member 400, the clutch member 300 is axially separated from the one-way locking member 400 (but does not disengage from the one-way locking member 400), so that the elastic member 520 is compressed, and when the teeth of the first locking teeth 320 pass the apexes of the second locking teeth 410, under the elastic restoring force of the elastic member 520, the clutch member 300 is again moved toward the one-way locking member 400 in the axial direction, that is, the clutch member 300 is linearly reciprocated in the axial direction relative to the one-way locking member 400 while being rotated in one direction, thereby ensuring that the clutch member 300 can smoothly rotate in one direction relative to the fixedly arranged one-way locking member 400 in the first position.

The embodiment also provides a head-wearing device, as shown in fig. 1, the head-wearing device is specifically a VR glasses, and includes a front glasses main body 2 and a rear adjustable headband 1, which enclose an annular wearing space for being worn on the head of a user, the specific structure of the adjustable headband 1 is described in the embodiment of the adjustable headband 1 and the descriptions of fig. 2 to 13, and will not be described herein again, the left end of the left headband 600 is fixedly connected to the left end of the shell of the glasses main body 2, and the right end of the right headband 700 is fixedly connected to the right end of the shell of the glasses main body 2, as can be known from the above embodiments of the adjustable headband 1, when the button 510 is pressed, the back-to-back/opposite movement of the left headband 600 and the right headband 700 can be realized by manually pulling the shell 100 of the adjustable headband 1 backwards or pushing forwards, the length of the adjustable headband 1 can be adjusted, and further the size of the annular space enclosed by the glasses main body 2 and the rear adjustable headband 1 can be realized, after releasing the key 510, the adjustable headband 1 can be adjusted to be long or short, i.e. the annular wearing space can be adjusted to be large or small.

In addition, the adjustable headband 1 is also applicable to head-mounted devices such as AR glasses, headphones, and the like.

The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions.

Claims

1. An adjustable headband, comprising:

a housing having a mounting cavity formed therein;

2. The adjustable headband of claim 1,

3. The adjustable headband of claim 1 or 2,

4. The adjustable headband of claim 3,

5. The adjustable headband of claim 1,

6. The adjustable headband of claim 5,

7. The adjustable headband of claim 5,

8. The adjustable headband of claim 1,

9. The adjustable headband of claim 1 wherein the drive assembly comprises:

10. A headgear comprising an adjustable headband according to any one of claims 1-9.