CN215488988U

CN215488988U - Head-wearing structure with one-key tightness adjusting function

Info

Publication number: CN215488988U
Application number: CN202121409691.2U
Authority: CN
Inventors: 石宇; 罗瑞
Original assignee: Shenzhen Ranvoo Technology Co Ltd
Current assignee: Shenzhen Jianjun Technology Co ltd
Priority date: 2021-06-23
Filing date: 2021-06-23
Publication date: 2022-01-11
Anticipated expiration: 2031-06-23

Abstract

The utility model discloses a head-wearing structure with one-key tightness adjusting function, which comprises a first head band, a second head band and an adjusting assembly connected with the first head band and the second head band, wherein the adjusting assembly comprises a base, a driving wheel rotatably connected to the base, a first elastic piece connected between the base and the driving wheel, a locking piece and a pressing piece; when the second pressed position, the pressing piece pushed the locking piece to keep away from the driving wheel, and the skewed tooth and the one-way tooth phase separation make the driving wheel take place the antiport under the effect of first elastic component, realize a key release or tighten up, simple structure, convenient operation.

Description

Head-wearing structure with one-key tightness adjusting function

Technical Field

The utility model relates to the technical field of VR equipment, in particular to a head-mounted structure with one-key tightness adjusting function for VR equipment.

Background

VR technology is the computer generation of a simulated environment into which a user is immersed to create an immersive and wonderful experience. Along with the rapid development of VR technique, equipment is constantly updated and iterated, and the outward appearance of VR equipment is from helmet-mounted to goggles formula, and the volume is littleer and more, light in weight, and the comfort level is higher and more. Current VR equipment is mostly worn overhead through the bandage, and the elasticity of bandage is either fixed unadjustable, or adjusts structure complicacy, complex operation, brings certain inconvenience for the user.

SUMMERY OF THE UTILITY MODEL

In view of this, a head-wearing structure with one-key tightness adjustment function is provided.

A head-wearing structure comprises a first head band, a second head band and an adjusting assembly connected with the first head band and the second head band, wherein the adjusting assembly comprises a base, a driving wheel rotatably connected to the base, a first elastic piece connected between the base and the driving wheel, a locking piece and a pressing piece, the driving wheel comprises a circle of transmission teeth and a circle of one-way teeth, the first head band and the second head band are respectively meshed with two opposite sides of the transmission teeth, the locking piece comprises oblique teeth acting with the one-way teeth, the pressing piece is movably connected with the base and can move between a first pressing position and a second pressing position, and in the first pressing position, the oblique teeth are meshed with the one-way teeth to enable the driving wheel to rotate only in one direction; in a second pressing position, the pressing piece pushes the locking piece to be far away from the driving wheel, the inclined teeth are separated from the one-way teeth, and the driving wheel is enabled to rotate reversely under the action of the first elastic piece.

Further, a first inclined surface is formed on one side, facing the locking piece, of the pressing piece, and a second inclined surface corresponding to the first inclined surface is formed on the locking piece; the pressing piece moves between a first pressing position and a second pressing position along the axial direction of the driving piece, and the first inclined surface and the second inclined surface are staggered in the first pressing position; when the first pressing position is located, the first inclined surface abuts against the second inclined surface, so that the locking piece moves along the radial direction of the driving piece and is far away from the driving piece.

Furthermore, the locking piece is arranged in a sliding chute, and a second elastic piece is clamped between the sliding chute and the locking piece; when the pressing piece is at the second pressing position, the locking piece compresses or stretches the second elastic piece, and when the pressing piece is at the first pressing position, the second elastic piece recovers to deform to push the locking piece to reset, so that the helical teeth are meshed with the unidirectional teeth.

Furthermore, a third elastic piece is arranged between the base and the pressing piece, the pressing piece compresses or stretches the third elastic piece when in a second pressing position, and the third elastic piece recovers to deform to push the pressing piece to move to the first pressing position.

The limiting part is matched with the pressing piece, the limiting part forms a protruding limiting part, the pressing piece cuts to form a stopping part, and the limiting part is located at the position of the cut and located on the outer side of the stopping part.

The driving wheel is provided with a driving wheel, the driving wheel is provided with an operating piece in sliding connection with the driving wheel, one of the operating piece and the driving wheel forms a groove, the other one of the operating piece and the driving wheel forms a convex column, the operating piece moves between a first operating position and a second operating position along the axial direction of the driving wheel, and the convex column is separated from the groove in the first operating position; when the operating piece is in the second operating position, the convex column is inserted into the groove, so that the operating piece can drive the driving wheel to rotate.

Furthermore, one of the operating part and the base forms a positioning hole, the other forms a positioning column inserted into the positioning hole, a fourth elastic part is sleeved on the positioning column, the tail end of the fourth elastic part is contained in the positioning hole, the operating part compresses or stretches the fourth elastic part when in a second operating position, and the fourth elastic part restores to deform to push the operating part to move to the first operating position.

Furthermore, the base protrudes to form an installation column, the driving wheel is sleeved on the installation column, and a space is formed between the driving wheel and the installation column to accommodate the first elastic piece; the first elastic piece is a coil spring, the outer end of the first elastic piece is connected with the driving wheel, and the inner end of the first elastic piece is connected with the mounting column.

Furthermore, a connecting piece is embedded in the driving wheel, one of the driving wheel and the connecting piece is provided with a fixing groove, and the other one of the driving wheel and the connecting piece is provided with a fixing block inserted into the fixing groove; the mounting post is provided with a first slot, the connecting piece is provided with a second slot, the inner end of the first elastic piece is inserted into the first slot, and the outer end of the first elastic piece is inserted into the second slot.

The first headband and the second headband are respectively meshed with the upper side and the lower side of the driving teeth, and the third headband is meshed with the left side or the right side of the driving teeth.

Compared with the prior art, the head-mounted structure with the one-key tightness adjusting function can realize one-key release or tightening, is simple in structure and convenient to operate, and can be used for a long time by a user to keep good comfort.

Drawings

Fig. 1 is a schematic structural view of an embodiment of the head-wearing structure with a one-key tightness adjusting function according to the present invention.

Fig. 2 is another angular view of the headgear structure shown in fig. 1.

Fig. 3 is a schematic view of the headgear structure shown in fig. 1 with the outer cover opened.

Fig. 4 is a further exploded view of the headgear structure shown in fig. 3.

Fig. 5 is a further exploded view of the actuator of fig. 4.

Fig. 6 is another angular view of fig. 5.

Fig. 7 is a further exploded view of the operating mechanism of fig. 4.

Fig. 8 is another angular view of fig. 7.

Fig. 9 is a cross-sectional view of the headgear structure shown in fig. 1.

Detailed Description

To facilitate an understanding of the utility model, the utility model will now be described more fully with reference to the accompanying drawings. One or more embodiments of the present invention are illustrated in the accompanying drawings to provide a more accurate and thorough understanding of the disclosed embodiments. It should be understood, however, that the present invention may be embodied in many different forms and should not be construed as being limited to the embodiments set forth herein.

The same or similar reference numbers in the drawings correspond to the same or similar parts; in the description of the present invention, it should be understood that if there is an orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", etc. based on the orientation or positional relationship shown in the drawings, it is only for convenience of describing the present invention and simplifying the description, but it is not intended to indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and are not to be construed as limiting the present patent, and the specific meaning of the terms may be understood by those skilled in the art according to specific circumstances.

The utility model provides a head-wearing structure with a one-key tightness adjusting function, which is used for wearing VR equipment such as VR glasses (not shown) on the head of a user.

As shown in fig. 1-3, a headgear structure is shown that includes a first headband 10, a second headband 12, a third headband 14, and an adjustment assembly 20, according to an embodiment of the present invention. The first headband 10 and the second headband 12 are respectively connected to the left side and the right side of the VR device, the third headband 14 is connected to the upper center of the VR device, and the ends (i.e., the ends far away from the VR device) of the first headband 10, the second headband 12 and the third headband 14 are in transmission connection with the adjusting assembly 20. The first headband 10 is formed at an end thereof with a first rack 11, the second headband 12 is formed at an end thereof with a second rack 13, and the third headband 14 is formed at an end thereof with a third rack 15. The first rack 11 and the second rack 13 extend transversely and are arranged at intervals up and down and are arranged oppositely; the third rack 15 extends longitudinally and is substantially perpendicular to the first and

second racks

11, 13.

When the head-wearing structure with the one-key tightness adjusting function is used, the first head band 10, the second head band 12 and VR equipment form a whole ring and are sleeved on the head, the third head band 14 and the VR equipment form a semi-ring and are supported on the top of the head, the adjusting component 20 is positioned at the position of the hindbrain, and a user drives the first rack 11 and the second rack 13 to transversely move and drives the third rack 15 to vertically move through rotating the adjusting component 20 so as to adjust the tightness of the head-wearing structure. It should be understood that the VR device can be worn around the head by a full ring of the first headband 10, the second headband 12 and the VR device, and particularly in the case of a light VR device, the third headband 14 can be omitted. When the third headband 14 is provided, the third headband 14 may be fixedly connected to the adjustment unit 20, or the like, so as to be non-adjustable in length.

Referring to fig. 4-8, the adjusting assembly 20 includes a base 22, a driving wheel 24 rotatably mounted on the base 22, a first elastic member 26 connected between the driving wheel 24 and the base 22, and an operating member 28 and a locking member 30 cooperating with the driving wheel 24.

The center of the base 22 is provided with a mounting post 220 protruding outwards, and the driving wheel 24 is movably sleeved on the mounting post 220, and the two are in clearance fit to facilitate the rotation of the driving wheel 24. A circle of transmission teeth 240 is formed on the peripheral surface of the driving wheel 24, according to the direction shown in the figure, the first rack 11 and the second rack 13 are respectively meshed with the upper side and the lower side of the transmission teeth 240, the third rack 15 is meshed with the right side of the transmission teeth 240, the driving wheel 24 rotates clockwise to enable the first elastic piece 26 to deform, meanwhile, the first rack 11 and the second rack 13 are driven to move oppositely, the third rack 15 moves downwards, and the head-mounted structure is tightened. On the contrary, the first elastic member 26 recovers deformation to enable the driving wheel 24 to rotate reversely, so as to drive the first rack 11, the second rack 13 to move backwards, drive the third rack 15 to move upwards, and release the head-wearing structure.

The driving wheel 24 has an inner diameter substantially larger than an outer diameter of the mounting post 220, and a mounting space is formed therebetween for disposing the first elastic member 26. The first resilient member 26 is preferably a coil spring having an inner end connected to the mounting post 220 and an outer end connected to the drive wheel 24. The drive wheel 24 pulls the outer end of the first elastic member 26 when rotating, so that the first elastic member 26 is compressed or stretched. In the illustrated orientation, clockwise rotation of the drive wheel 24 causes compression of the first resilient member 26; the first elastic member 26 is deformed again so that the driving wheel 24 is rotated in a reverse direction, i.e., counterclockwise direction. It should be understood that in other embodiments, the driving wheel 24 may rotate counterclockwise to compress the first elastic member 26, or the driving wheel 24 may rotate to stretch the first elastic member 26, and the first elastic member 26 may return to the original shape to allow the driving wheel 24 to rotate reversely.

As shown in fig. 5 and 6, the driving wheel 24 is embedded with the coupling 25, the coupling 25 is provided with a fixing groove 250, the inner wall of the driving wheel 24 is provided with a fixing block 242, and the fixing block 242 is inserted into the fixing groove 250 to limit the relative rotation of the coupling 25 and the driving wheel 24. In other embodiments, the fixing groove may be disposed on the driving wheel 24, and the fixing block may be disposed on the coupling 25 to be inserted into the fixing groove of the driving wheel 24. Of course, the coupling 25 and the driving wheel 24 may be connected in other ways as long as they can rotate synchronously. Preferably, the mounting post 220 is provided with a first slot 222, the connecting member 25 is provided with a second slot 252, an inner end of the first elastic member 26 is inserted into the first slot 222, and an outer end thereof is inserted into the second slot 252, so as to connect the first elastic member 26 between the base 22 and the driving wheel 24.

As shown in fig. 5, an end cap 244 is formed at the outer end of the driving wheel 24 (i.e., the end far away from the base 22), and an axle hole 246 is formed at the center of the end cap 244, wherein the size of the axle hole 246 is slightly larger than the outer diameter of the mounting post 220, so as to facilitate the assembly and rotation of the driving wheel 24. Preferably, the end of the mounting post 220 is formed with a protrusion 224 protruding radially outward, and the protrusion 224 may be ring-shaped, block-shaped, strip-shaped, etc. The outer diameter of the mounting post 220 at the position of the protrusion 224 is slightly larger than the diameter of the shaft hole 246, and the protrusion 224 is clamped on the outer surface of the end cover 244 to limit the driving wheel 24 after assembly, so that the driving wheel 24 is prevented from falling off from the mounting post 220. The first slot 222 on the mounting post 220 may allow the mounting post 220 to be more easily deformed during assembly of the drive wheel 24 to facilitate the end cap 244 of the drive wheel 24 to clear the protrusion 224.

Preferably, the end cap 244 also has a ring of one-way teeth 249 formed thereon for interacting with the locking member 30 to limit rotation of the drive wheel 24. In the illustrated embodiment, the locking member 30 is movably disposed in a sliding slot 42, and a second elastic member 50, such as a coil spring, is disposed in the sliding slot 42, and has one end thereof abutting against the top of the sliding slot 42 and the other end abutting against the locking member 30. Preferably, the top of the locking member 30 is formed with a receiving groove 34, and the bottom end of the second elastic member 50 is located in the receiving groove 34 and abuts against the bottom surface of the receiving groove 34. The latch member 30 is formed with helical teeth 32 on the bottom thereof, and the helical teeth 32 normally engage the one-way teeth 249 to permit the drive wheel 24 to rotate only in a clockwise direction, which is maintained when the drive wheel 24 is rotated to an angle to tighten the headgear to a desired size. When the locking member 30 moves up, the second elastic member 50 is compressed and the helical teeth 32 thereof are separated from the one-way teeth 249, and the second elastic member 50 is deformed again to move down the locking member 30, so that the helical teeth 32 are engaged with the one-way teeth 249.

As shown in fig. 7 and 8, the slide groove 42 is formed on a mounting plate 40, and the mounting plate 40 is fixedly attached to the base 22 by screws or the like and is disposed around the drive wheel 24. It should be understood that the mounting plate 40 and the base 22 may also be a unitary structure. Preferably, a pressing member 60 is movably connected to an outer side of the mounting plate 40, a first inclined surface 62 is formed on a side of the pressing member 60 facing the mounting plate 40, and a second inclined surface 36 is formed on a side of the locking member 30 facing the pressing member 60. Normally, as shown in fig. 9, the pressing member 60 is separated from the locking member 30, and the first inclined surface 62 is offset from the second inclined surface 36. When the pressing member 60 is pressed to move toward the locking member 30, the first inclined surface 62 abuts against the second inclined surface 36 to move the locking member 30 upward, and the helical teeth 32 are separated from the one-way teeth 249. At this time, the driving wheel 24 can be rotated in the reverse direction by the first elastic member 26, so that the head mount structure is released.

Preferably, a third elastic member 52, such as a coil spring, is disposed between the pressing member 60 and the mounting plate 40. When the pressing member 60 is pressed, the pressing member 60 moves inward so that the third elastic member 52 is compressed; when the pressing member 60 is released, the third elastic member 52 is deformed again, so that the pressing member 60 moves outward and is reset to be separated from the locking member 30. As shown in fig. 7, a stopper 70 is connected to the mounting plate 40 to stop the pressing member 60 and prevent the pressing member 60 from being disengaged. In other embodiments, the retaining member 70 may be integral with the mounting plate 40 and/or the base 22. The limiting member 70 is provided with a limiting portion 72 protruding outwards, a stopping portion 64 is correspondingly formed on the pressing member 60 by cutting, and after assembly, the limiting portion 72 is located at the position of the cut and is located outside the stopping portion 64, so that the movement of the pressing member 60 is limited in the process of outward movement and resetting of the pressing member 60.

In this embodiment, the limiting member 70 limits the pressing member 60, and the third elastic member 52 may be movably interposed between the pressing member 60 and the mounting plate 40. Preferably, two stoppers 70 are symmetrically disposed on two sides of the pressing member 60. In another embodiment, both ends of the third elastic member 52 may be connected to the pressing member 60 and the mounting plate 40, respectively, and the pressing member 60 may be limited by the third elastic member 52, and the limiting member 70 may be omitted. The pressing member 60 is opened at the center thereof, i.e., at a position corresponding to the driving wheel 24, and the inner end of the operating member 28 is connected to the driving wheel 24 through the opening of the pressing member 60 to rotate the driving wheel 24. Preferably, the base 22 is covered with an outer cover 29, the outer cover 29 shields the adjusting assembly 20 to ensure the overall aesthetic appearance and safety of the product, and the outer end of the operating member 28 protrudes from the center of the outer cover 29 to facilitate the operation of the user.

The operating member 28 is provided with a protruding post 280 protruding from a side facing the driving wheel 24, and the protruding post 280 is offset from the center of the operating member 28. Accordingly, the end cap 244 of the driving wheel 24 has a groove 248 for engaging with the protrusion 280, so that the operating member 28 can drive the driving wheel 24 to rotate. Preferably, the posts 280 and recesses 248 are plural and distributed about the center of the operating member 28 and the drive wheel 24, respectively. It will be appreciated that in some embodiments, a recess may be formed in the operating member 28 and a boss may be formed on the drive wheel 24 to mate with the recess of the operating member 28. Preferably, a positioning post 282 protrudes from the center of the operating member 28, a positioning hole 226 is formed in the mounting post 220 of the base 22, and the positioning post 282 is inserted into the positioning hole 226 so that the operating member 28 and the driving wheel 24 are coaxially arranged, thereby facilitating the assembly of the operating member 28 and the driving wheel 24.

In this embodiment, the operating member 28 is movably connected to the driving wheel 24, and the operating member 28 can move back and forth relative to the driving wheel 24 along the axial direction thereof, so that the protruding post 280 is inserted into the groove 248 or disengaged from the groove 248. In a normal state, the operating member 28 is far away from the driving wheel 24, the convex column 280 is separated from the groove 248, and the operating member 28 rotates idly when the operating member 28 is rotated; when the operating member 28 is pressed to move toward the driving wheel 24 and the protruding post 280 is inserted into the groove 248, the driving wheel 24 can be driven to rotate by rotating the operating member 28. In this way, under normal conditions, the drive wheel 24 does not rotate due to an accidental touch or the like on the operating member 28. It should be understood that the operating member 28 and the driving wheel 24 can be fixedly connected or they can be an integral structure, and the driving wheel 24 can be rotated by directly rotating the operating member 28, so that the operating member 28 does not need to be pressed.

Preferably, the positioning post 282 of the operating element 28 is sleeved with the fourth elastic element 54, such as a coil spring, and one end of the fourth elastic element 54 is received in the positioning hole 226 and abuts against the bottom surface of the positioning hole 226, so that when the operating element 28 is pressed, the fourth elastic element 54 is compressed, and after the operating element 28 is released, the fourth elastic element 54 is deformed again to push the operating element 28 to move and reset outwards. During the forward and backward movement of the operating member 28, the positioning post 282 and the positioning hole 226 cooperate to guide the movement of the operating member 28, so that the operating member 28 and the driving wheel 24 are always coaxially arranged. Preferably, the inner end of the operating member 28 is formed with an annular rim 284 protruding radially outward, the annular rim 284 abutting against the inner edge of the pressing member 60 so that the operating member 28 does not disengage from the pressing member 60. In addition, an anti-slip rib 286 is formed on the outer peripheral surface of the operating member 28 to facilitate the user to rotate the operating member 28.

In other embodiments, the operating member 28 and the pressing member 60 can be an integral structure, and the first inclined surface 62 of the operating member 28 can be a full circle structure, so that the pressing member 60 can rotate any angle to ensure that the first inclined surface 62 can interact with the second inclined surface 36 of the locking member 30, and the locking member 30 can be unlocked only by pressing the pressing member 60, so that the inclined teeth 32 can be separated from the one-way teeth 249 of the driving wheel 24. While the latch member 30 is shown as being vertically disposed and moving up and down, in other embodiments, the latch member 30 can be oriented in any direction and can interact with a full turn of the one-way teeth 249 on the drive wheel 24. In general, the operating member 28 moves back and forth in the axial direction of the drive wheel 24 to be connected to or disconnected from the drive wheel 24; the pressing member 60 moves back and forth in the axial direction of the driving wheel 24 to push the locking member 30 to move in the radial direction of the driving wheel 24 so that the helical teeth 32 thereof are engaged with or disengaged from the one-way teeth 249.

When the headgear is too loose, the user depresses the operating member 28 such that the post 280 is inserted into the recess 248 of the drive wheel 24, and then rotates the operating member 28. When the operating member 28 rotates, the driving wheel 24 is driven to rotate, and when the driving wheel 24 rotates, the first elastic member 26 is compressed, and the first headband 10, the second headband 12 and the third headband 14 are driven to move, so that the head wearing structure is tightened. When the headgear is tightened to the proper size, the operating member 28 is released, and the drive wheel 24 remains stationary and the headgear is held in the tightened position by the helical teeth 32 of the locking member 30 and the one-way teeth 249 of the drive wheel member 24. When it is desired to release the headgear, the user presses the pressing member 60. The pressing member 60 moves to make the first inclined surface 62 abut against the second inclined surface 36 of the locking member 30, the locking member 30 moves upwards to make the inclined teeth 32 and the one-way teeth 249 separate, the first elastic member 26 recovers to drive the driving wheel 24 to rotate reversely, and the first headband 10, the second headband 12 and the third headband 14 move reversely to release the head-wearing structure.

The head-wearing structure with the one-key tightness adjusting function of the utility model adjusts the tightness of the head-wearing structure by rotating the operating part 28 to drive the first rack 11, the second rack 13 and the third rack 15 to move; after the head wearing structure is adjusted in position, the head wearing structure is stopped at a position where the head wearing structure is wanted to be stopped through the clamping action of the inclined teeth 32 of the locking piece 30 and the one-way teeth 249 of the driving wheel 24, and the head wearing structure is matched with the head circumference of a user; when the head-wearing structure needs to be loosened, the pressing piece 60 is pressed to separate the helical teeth 32 from the one-way teeth 249, the first rack 11, the second rack 13 and the third rack 15 are reversely moved and reset under the action of the first elastic piece 26, one-key release or tightening of the head-wearing structure is achieved, the structure is simple, the operation is convenient, the head-wearing structure is automatically kept in a proper tightness state in the using process, and a user can use the head-wearing structure for a long time to keep good comfort.

It should be noted that the present invention is not limited to the above-mentioned embodiments, and other changes and modifications can be made by those skilled in the art according to the spirit of the present invention, and these changes and modifications made according to the spirit of the present invention should be included in the scope of the present invention as claimed.

Claims

1. The utility model provides a wear structure with key regulation elasticity function, includes first bandeau, second bandeau and connects the regulation subassembly of first bandeau, second bandeau which characterized in that: the adjusting assembly comprises a base, a driving wheel, a first elastic piece, a locking piece and a pressing piece, wherein the driving wheel is rotatably connected to the base, the first elastic piece is connected between the base and the driving wheel, the driving wheel comprises a circle of transmission teeth and a circle of unidirectional teeth, the first headband and the second headband are respectively meshed with two opposite sides of the transmission teeth, the locking piece comprises helical teeth which are acted with the unidirectional teeth, the pressing piece is movably connected with the base and can move between a first pressing position and a second pressing position, and when the first pressing position is adopted, the helical teeth are meshed with the unidirectional teeth, so that the driving wheel can only rotate in a unidirectional mode; in a second pressing position, the pressing piece pushes the locking piece to be far away from the driving wheel, the inclined teeth are separated from the one-way teeth, and the driving wheel is enabled to rotate reversely under the action of the first elastic piece.

2. The headgear structure having a one-key adjustment function of tightness according to claim 1, wherein a side of the pressing member facing the lock member is formed with a first slope, and the lock member is formed with a second slope corresponding to the first slope; the pressing piece moves between a first pressing position and a second pressing position along the axial direction of the driving piece, and the first inclined surface and the second inclined surface are staggered in the first pressing position; when the first pressing position is located, the first inclined surface abuts against the second inclined surface, so that the locking piece moves along the radial direction of the driving piece and is far away from the driving piece.

3. The headgear structure with a one-key tightness adjusting function according to claim 2, wherein the locking member is disposed in a sliding groove, and a second elastic member is interposed between the sliding groove and the locking member; when the pressing piece is at the second pressing position, the locking piece compresses or stretches the second elastic piece, and when the pressing piece is at the first pressing position, the second elastic piece recovers to deform to push the locking piece to reset, so that the helical teeth are meshed with the unidirectional teeth.

4. The headgear structure with one-key tightness adjusting function according to claim 1, wherein a third elastic member is disposed between the base and the pressing member, the pressing member compresses or stretches the third elastic member when in the second pressing position, and the third elastic member recovers its deformation to push the pressing member to move to the first pressing position.

5. The headgear structure with one-key tightness adjusting function according to claim 4, further comprising a limiting member that interacts with the pressing member, the limiting member forming a protruding limiting portion, the pressing member being notched to form a stopper portion, the limiting portion being located at a position of the notch and outside the stopper portion.

6. The headgear structure with one-touch adjustment function of claim 1, further comprising an operating member slidably coupled to the drive wheel, wherein one of the operating member and the drive wheel forms a recess and the other of the operating member and the drive wheel forms a projection, and wherein the operating member is movable in an axial direction of the drive wheel between a first operating position and a second operating position, and wherein in the first operating position, the projection is disengaged from the recess; when the operating piece is in the second operating position, the convex column is inserted into the groove, so that the operating piece can drive the driving wheel to rotate.

7. The head-wearing structure with one-key tightness adjusting function according to claim 6, wherein one of the operating member and the base forms a positioning hole, the other one forms a positioning post inserted into the positioning hole, the positioning post is sleeved with a fourth elastic member, a tail end of the fourth elastic member is accommodated in the positioning hole, the operating member compresses or stretches the fourth elastic member when in the second operating position, and the fourth elastic member recovers to deform to push the operating member to move to the first operating position.

8. The headgear structure with one-key tightness adjusting function according to claim 1, wherein the base protrudes to form a mounting post, the driving wheel is sleeved on the mounting post, and a space is formed between the driving wheel and the mounting post to accommodate the first elastic member; the first elastic piece is a coil spring, the outer end of the first elastic piece is connected with the driving wheel, and the inner end of the first elastic piece is connected with the mounting column.

9. The head-wearing structure with one-key tightness adjusting function according to claim 8, wherein a connecting piece is embedded in the driving wheel, one of the driving wheel and the connecting piece is provided with a fixing groove, and the other one of the driving wheel and the connecting piece is provided with a fixing block inserted into the fixing groove; the mounting post is provided with a first slot, the connecting piece is provided with a second slot, the inner end of the first elastic piece is inserted into the first slot, and the outer end of the first elastic piece is inserted into the second slot.

10. The headgear structure having a one-touch adjustment function as claimed in any one of claims 1 to 9, further comprising a third headband coupled to the adjustment member, the first headband and the second headband being engaged with the upper and lower sides of the driving teeth, respectively, and the third headband being engaged with the left side or the right side of the driving teeth.