CN218845706U

CN218845706U - Telescopic adjusting mechanism and wearable device

Info

Publication number: CN218845706U
Application number: CN202222663843.2U
Authority: CN
Inventors: 梁栋
Original assignee: Goertek Techology Co Ltd
Current assignee: Goertek Techology Co Ltd
Priority date: 2022-10-10
Filing date: 2022-10-10
Publication date: 2023-04-11
Anticipated expiration: 2032-10-10

Abstract

The utility model discloses a flexible adjustment mechanism and wearing equipment, flexible adjustment mechanism include installation carrier, adjusting part, clutch assembly and locking structure. The adjusting assembly comprises an adjusting knob, a driving gear, a first elastic piece and two driven racks, the adjusting knob and the driving gear can be rotatably arranged on the mounting carrier, the first elastic piece is arranged between the mounting carrier and the driving gear, and the two driven racks are respectively meshed with the two opposite sides of the driving gear; the clutch assembly is used for conducting transmission between the adjusting knob and the driving gear when the adjusting knob rotates along a first direction, and blocking transmission between the adjusting knob and the driving gear when the adjusting knob rotates along a second direction opposite to the first direction; the stopping structure is used for preventing the clutch assembly from rotating along the second direction when the transmission between the adjusting knob and the driving gear is conducted. The utility model discloses technical scheme improves the convenience that flexible adjustment mechanism used to promote user's use and experience.

Description

Telescopic adjusting mechanism and wearable device

Technical Field

The utility model relates to a wearing equipment technical field, in particular to flexible adjustment mechanism and applied this flexible adjustment mechanism's wearing equipment.

Background

At present, wearing equipment such as AR product and VR product can be adjusted two bandage pieces through flexible adjustment mechanism to stretch out and draw back in order to adapt to different users' wearing, partial wearing equipment. The telescopic adjusting mechanism of the wearing device in the related art generally includes an adjusting knob, a driving gear, a driven rack connected to two straps or directly disposed on the straps, a stopping pawl for performing unidirectional stopping on the driving gear, and an unlocking paddle. At the moment, the adjusting knob is driven to rotate along one direction (which can be defined as clockwise), and the two binding band pieces can be driven to mutually approach to contract through the transmission of the driving gear and the two driven racks; after the two binding band pieces are adjusted in place, the stop pawl abuts against the driving gear in a limiting mode, so that the two binding band pieces are limited and fixed relatively, and wearing of the wearing equipment is completed. When the wearable device needs to be taken down, the locking pawl is driven to be far away from the driving gear through the driving unlocking shifting piece, so that the locking of the locking pawl to the driving gear is released, the adjusting knob can be driven to rotate along the other direction (which can be defined as anticlockwise) to drive the two binding belt pieces to be far away from each other for extension, and the wearable device is taken down.

However, in the practical use of the above-described telescopic adjustment mechanism, because the driving gear is abutted and limited by the stopping pawl and only rotates clockwise in a single direction, the corresponding two driven racks can be driven by the driving gear. The two binding belt pieces can be adjusted in place only by continuously driving the adjusting and rotating knob to operate when the user needs to wear the band. And the distance that two bandage pieces are driven to move by the driving gear and the driven rack is limited when the adjusting knob rotates for one circle, so that the operation time for a user to adjust the two bandage pieces in place by driving the adjusting knob is long. Especially, when the wearing size that two bandage pieces enclose to close and form is less than the wearing size that current user needs, need the user to stir the unblock plectrum in advance and drive the locking pawl and keep away from the driving gear, just can further drive two bandage pieces through drive adjust knob and extend earlier after removing the locking of locking pawl to the driving gear, contract the regulation afterwards. Therefore, the telescopic adjusting mechanism in the related art is inconvenient to use, and the use experience of a user is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a flexible adjustment mechanism aims at improving the convenience that flexible adjustment mechanism used to promote user's use and experience.

In order to achieve the above object, the utility model provides a telescopic adjusting mechanism includes:

mounting a carrier;

the adjusting assembly comprises an adjusting knob, a driving gear, a first elastic piece and two driven racks, the adjusting knob and the driving gear can be rotatably arranged on the mounting carrier, the first elastic piece is arranged between the mounting carrier and the driving gear, and the two driven racks are respectively meshed with two opposite sides of the driving gear;

the clutch assembly is used for conducting transmission between the adjusting knob and the driving gear when the adjusting knob rotates along a first direction, and blocking transmission between the adjusting knob and the driving gear when the adjusting knob rotates along a second direction opposite to the first direction; and

a stop structure for blocking the clutch assembly from rotating in a second direction when the transmission between the adjustment knob and the drive gear is conducted.

Optionally, the clutch assembly comprises:

the rotating wheel is rotatably arranged on the mounting carrier, and the rotating axis of the rotating wheel is parallel to the rotating axis of the adjusting knob and the driving gear and can be abutted and driven by the adjusting knob; and

the sliding piece is movably arranged on the mounting carrier, when the adjusting knob drives the rotating wheel to rotate along a first direction, the sliding piece can move to conduct transmission between the rotating wheel and the driving gear, and when the adjusting knob rotates relative to the rotating wheel along a second direction, the sliding piece can move to block the transmission between the rotating wheel and the driving gear.

Optionally, the sliding member is rotatably and slidably disposed between the driving gear and the rotating wheel, a rotating axis of the sliding member is collinear with rotating axes of the rotating wheel and the driving gear, and a sliding direction of the sliding member is parallel to the rotating axis of the rotating wheel;

the sliding piece is provided with a first meshing tooth at one end close to the driving gear, and a second meshing tooth at one end close to the rotating wheel;

the driving gear is provided with a first driving tooth at a position corresponding to the first meshing tooth, and the first driving tooth is meshed with the first meshing tooth;

the rotating wheel is provided with a second driving tooth at a position corresponding to the second meshing tooth, the sliding piece slides to conduct transmission between the rotating wheel and the driving gear, and the second driving tooth is meshed with the second meshing tooth.

Optionally, one end of the stopping structure is used for abutting against and blocking the rotating wheel to rotate along the second direction, and the other end of the stopping structure can abut against and block the sliding piece from sliding until the second meshing tooth is meshed with the second driving tooth;

when the adjusting knob drives the rotating wheel to rotate along the first direction, one end, which is used for abutting against and blocking the rotating wheel to rotate along the second direction, of the stopping structure can also be abutted against and driven by the rotating wheel, so that the other end of the stopping structure is not abutted against and blocked on the sliding part;

when the adjusting knob rotates relative to the rotating wheel along a second direction opposite to the first direction, the adjusting knob can abut against and drive the sliding piece to slide until the second meshing teeth are separated from the second driving teeth.

Optionally, the rotating wheel is provided with a convex tooth along a rotation circumferential direction thereof, the stopping structure includes a pawl member and a second elastic member, the pawl member is capable of rotating the mounting carrier, one end of the pawl member abuts against the convex tooth to abut against and block the rotating wheel from rotating along a second direction, and the other end of the pawl member can abut against and block the sliding member from moving, and the second engaging tooth is engaged with the second driving tooth; when the adjusting knob drives the rotating wheel to rotate along a first direction, one end of the pawl piece, which is abutted to the convex teeth, can be abutted to drive by the rotating wheel, so that the other end of the pawl piece is not abutted to and blocked from the sliding piece; the second elastic piece is arranged between the mounting carrier and the pawl piece so as to drive the pawl piece to rotate and reset;

and/or, the clutch assembly further comprises a third elastic piece, and the third elastic piece is arranged between the driving gear and the sliding piece so as to drive the sliding piece to slide until the second meshing teeth are meshed with the second driving teeth.

Optionally, the sliding part is further provided with a third engaging tooth at one end close to the rotating wheel, part of the structure of the adjusting knob rotatably penetrates through the rotating wheel, and a third driving tooth is arranged at a position corresponding to the third engaging tooth;

when the adjusting knob rotates relative to the rotating wheel along a second direction opposite to the first direction, the adjusting knob drives the sliding piece to slide to a position where the second meshing tooth is separated from the second driving tooth through the matching of the third driving tooth and the third meshing tooth.

Optionally, a reset piece is movably mounted at one end of the sliding piece close to the rotating wheel, and the reset piece is provided with the third meshing teeth;

and the rotating wheel is provided with a fourth driving tooth at a position corresponding to the second driving tooth, and the fourth driving tooth and the third driving tooth have the same structure and are abutted against the third meshing tooth together.

Optionally, the sliding member is arranged in an annular structure, and the resetting member is movably mounted on the inner side of one end of the sliding member, which is close to the rotating wheel;

the second meshing teeth are arranged on the inner side wall of one end, close to the rotating wheel, of the sliding part and are arranged at intervals with the resetting part;

a connecting cylinder is arranged on one side of the rotating wheel facing the driving gear, the second driving teeth are arranged on the outer side wall of the connecting cylinder, and the fourth driving teeth are arranged on the inner side of the connecting cylinder;

part of the structure of the adjusting knob penetrates through the connecting cylinder, and the third driving tooth is arranged in the adjusting rotation penetrating through the connecting cylinder.

Optionally, a mounting groove is formed in one side, facing the rotating wheel, of the driving gear, and the groove wall of the mounting groove, which is used for enclosing the notch of the mounting groove, is provided with the first driving tooth;

one end, far away from the rotating wheel, of the sliding piece is rotatably and slidably inserted into the mounting groove, the sliding piece is arranged in an annular structure, and the first meshing teeth are arranged on the outer side wall of one end, close to the driving gear, of the sliding piece.

Optionally, the adjusting knob is sleeved outside the rotating wheel, the adjusting knob is provided with a first abutting portion, the rotating wheel is provided with a second abutting portion, and the adjusting knob can drive the rotating wheel to abut through the cooperation of the first abutting portion and the abutting portion; the telescopic adjusting mechanism further comprises a fourth elastic piece, and the fourth elastic piece is arranged on the rotating wheel so as to drive the first abutting part to abut against the second abutting part;

and/or, the first elastic piece is a volute spiral spring, the inner side end of the volute spiral spring is provided with an inner connecting arm, the outer side end of the volute spiral spring is provided with an outer connecting arm, the inner connecting arm is connected to the driving gear in an inserting mode, and the outer connecting arm is connected to the mounting carrier in an inserting mode.

The utility model also provides a wearing equipment, include as above flexible adjustment mechanism.

The technical scheme of the utility model flexible adjustment mechanism when being applied to wearing equipment, because flexible adjustment mechanism's clutch assembly does not switch on its and adjustment assembly's driven between the driving gear when initial condition for the driving gear can carry out two-way free rotation. At this time, the user can directly pull the two driven racks to adjust the elongation of the wearing device, and then directly wear the wearing device. After the human body part is worn and the pulling force to the two driven racks is cancelled, the first elastic piece can drive the gear to rotate and reset under the action of the deformation elastic force of the first elastic piece, and the two racks are driven to mutually approach and shrink in the rotating and resetting process, so that the primary wearing and the adjusting of the telescopic adjusting mechanism on the human body are achieved. Then, a user can drive the adjusting knob to rotate along the first direction (which can be one of clockwise and anticlockwise), at the moment, the clutch assembly can conduct transmission between the adjusting knob and the driving gear, and the user can drive the driving gear to rotate in the process of driving the adjusting knob to rotate along the first direction. And the driving gear can drive two driven racks again and be close to each other at the pivoted in-process to make flexible adjustment mechanism can contract once more and have certain power of wearing and come the stable wearing in human body. And then the clutch assembly is prevented from rotating along the second direction when the transmission between the adjusting knob and the driving gear is conducted through the stop structure, so that the driving gear of the adjusting host can not rotate along the second direction (the other one of the driving gear can rotate clockwise and anticlockwise), the telescopic adjusting mechanism is ensured to be stable and limited under the state of having certain contraction force, and the final wearing and adjusting in place on a human body are completed.

Therefore, the setting of the structure of the telescopic adjusting mechanism in the scheme enables a user to directly extend through pulling two driven racks when the user uses the telescopic adjusting mechanism, and the first elastic piece drives the two driven racks to preliminarily contract to adapt to the wearing position of a human body, so that the telescopic adjusting mechanism of the telescopic adjusting mechanism can be quickly preliminarily adjusted. After finishing preliminary regulation, the driving gear is driven to rotate along the first direction by driving the regulating knob so as to further contract the two driven racks, and further accurate regulation of the telescopic regulating mechanism is realized. So compare in the flexible adjustment mechanism among the prior art in the adjustment process, need the user to carry out the operation of the drive adjust knob that comparatively wastes time and energy always and just can accomplish flexible regulation. Adjustment mechanism in this scheme is when using because it has primary adjustment and accurate regulation, and just makes the preliminary adaptation of flexible adjustment mechanism in human after primary adjustment is accomplished, so only need the user to drive adjust knob during accurate regulation and rotate for a short time (can rotate even and be less than the round), guarantee that flexible adjustment mechanism can further have certain shrink power can. At this moment, tentatively adjust comparatively simply swiftly with accurate regulation homogeneous phase, need not the user and carry out the regulation operation that comparatively wastes time and energy for can improve the convenience that telescopic adjusting mechanism used, thereby promote user's use and experience.

And when the wearing equipment needs to be taken down, the adjusting knob of the driving adjusting assembly can be driven to rotate along the second direction so as to block the transmission between the adjusting knob and the driving gear. At this moment, this driving gear has also obtained the unblock again and can carry out two-way free rotation to when the user of convenience comes to stimulate these two driven racks, can be quick take off wearing equipment. It is thus clear that this flexible adjustment mechanism's unblock operation is simple equally, also need not the user to carry out comparatively loaded down with trivial details through the operation that the drive gear pivoted was rotated to the drive knob, just can realize keeping away from the extension each other with two driven racks to further improve the convenience that flexible adjustment mechanism used, experience in order further to promote user's use.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

Fig. 1 is a schematic structural view of an embodiment of the telescopic adjustment mechanism of the present invention;

FIG. 2 is a schematic view of an exploded structure of the telescoping adjustment mechanism of FIG. 1;

FIG. 3 is another schematic view of the exploded structure of the telescoping adjustment mechanism of FIG. 2;

fig. 4 is a schematic view of the clutch assembly of the telescopic adjusting mechanism of the present invention in a state of turning on the transmission between the adjusting knob and the driving gear;

fig. 5 is a schematic view of the clutch assembly of the telescopic adjusting mechanism of the present invention in a state of blocking the transmission between the adjusting knob and the driving gear;

fig. 6 is a schematic view of a partial structure of the telescopic adjustment mechanism of the present invention;

FIG. 7 is another schematic view of a portion of the telescoping adjustment mechanism of FIG. 6;

fig. 8 is another partial structural schematic view of the telescopic adjustment mechanism of the present invention;

fig. 9 is a schematic view of another partial structure of the telescopic adjustment mechanism of the present invention;

fig. 10 is a schematic view of another partial structure of the telescopic adjustment mechanism of the present invention;

FIG. 11 is an exploded view of a portion of the telescoping adjustment mechanism of FIG. 10;

fig. 12 is an exploded view of a part of the telescopic adjustment mechanism of fig. 11.

The reference numbers illustrate:

reference numerals	Name (R)	Reference numerals	Name (R)
				100	Telescopic adjusting mechanism	50	Clutch assembly
10	Mounting carrier	51	Rotating wheel
				11	Base plate	511	Second driving gear
13	Outer casing	513	Convex tooth
				15	Middle frame	515	Fourth drive tooth
30	Adjusting assembly	517	Connecting cylinder
				31	Adjusting knob	519	Second abutting part
311	Third drive tooth	53	Sliding member
				313	First contact part	531	First gear tooth
33	Driving gear	533	Second engagement tooth
				331	First driving gear	535	Resetting piece
333	Mounting groove	537	Third engaging tooth
				335	Mounting cylinder	55	Third elastic member
35	First elastic member	70	Stop structure
				37	Driven rack	71	Pawl member

The realization, the functional characteristics and the advantages of the utility model are further explained by combining the embodiment and referring to the attached drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that all directional indicators (such as upper, lower, left, right, front, and rear … …) in the embodiments of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly.

In the present application, unless expressly stated or limited otherwise, the terms "connected" and "fixed" are to be construed broadly, e.g., "fixed" may be fixedly connected or detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.

In addition, the descriptions related to "first", "second", etc. in the present invention are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit ly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" appearing throughout is to include three juxtapositions, exemplified by "A and/or B," including either the A or B arrangement, or both A and B satisfied arrangement. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.

Referring to fig. 1 to 5, the present invention provides a telescopic adjusting mechanism 100, in an embodiment of the present invention, the telescopic adjusting mechanism 100 includes a mounting carrier 10, a clutch assembly 50 and a stop structure 70; the adjusting assembly 30, the adjusting assembly 30 includes an adjusting knob 31, a driving gear 33, a first elastic member 35 and two driven racks 37, the adjusting knob 31 and the driving gear 33 are both rotatably disposed on the installation carrier 10, the first elastic member 35 is disposed between the installation carrier 10 and the driving gear 33, and the two driven racks 37 are respectively engaged with two opposite sides of the driving gear 33; the clutch assembly 50 is used for conducting transmission between the adjusting knob 31 and the driving gear 33 when the adjusting knob 31 rotates along a first direction, and blocking transmission between the adjusting knob 31 and the driving gear 33 when the adjusting knob 31 rotates along a second direction opposite to the first direction; the stopper 70 is used to block the clutch assembly 50 from rotating in the second direction when the transmission between the conduction adjustment knob 31 and the driving gear 33 is conducted.

The telescopic adjustment mechanism 100 described above may be applied to a wearable device, wherein the wearable device may be a head-mounted display device. The head-mounted display device can comprise a display host, a rear shell and two binding pieces; the back casing is relative interval setting with the demonstration host computer, and the one end of two bandage spares can be connected respectively in the relative both ends of demonstration host computer, and the both ends of locating the back casing are inserted to the other end slidable. At this time, the mount carrier 10 in the telescopic adjustment mechanism 100 may be directly formed by a part of the structure on the rear housing; of course, the mounting carrier 10 may be provided separately from the rear housing, and may be used to provide a mounting position for mounting the adjustment assembly 30, the clutch assembly 50, the stopper 70, and the like. Likewise, the two driven racks 37 in the telescopic mechanism can also be formed directly by a part of the structure on the two binding members; of course, two driven racks 37 may be additionally provided independently of the two binding members, and the two driven racks 37 may be respectively connected to the two binding members to correspondingly drive the two binding members to be tightened or extended when the two driven racks 37 are driven to approach each other or move away from each other. In some embodiments, the wearable device may also be a waist-worn device. The waist-worn device may include a main body portion (e.g., a part for physical therapy or shaping of a human body, etc.), and two strap members connected to the main body portion. In this case, the mounting carrier 10 and the driving portion may be disposed at an interval, and the two binding members may be directly connected to the two driven racks 37. Therefore, the specific type of the device to which the telescopic adjustment mechanism 100 is applied is not limited in this application, and the telescopic adjustment mechanism 100 in this application can be applied to a device that can be telescopically adjusted like two straps. Further, the mounting carrier 10 of the telescoping adjustment mechanism 100 may be used to provide a mounting location for assembling the adjustment assembly 30, the clutch assembly 50, the stop structure 70, or other components of the telescoping adjustment mechanism 100 into a single unit in the telescoping adjustment mechanism 100. As above, it may be a part of the structure of the housing to which the subsequent telescopic adjustment mechanism 100 is applied to the apparatus (the rear housing in the head-mounted display apparatus as above); or a part provided separately from the housing, in which case the mounting carrier 10 may be formed by combining a plurality of plates, or by combining a plurality of columns, or by combining a plurality of plates and a plurality of columns. The pinion gear 33 may be configured to engage with the two driven racks 37 to move the two driven racks 37 toward each other when the pinion gear 33 is rotated in a first direction (which may be one of clockwise and counterclockwise). And when the driving gear 33 is driven to rotate in a second direction (which may be the other of clockwise and counterclockwise), the two driven racks 37 are driven to move away from each other. The first elastic member 35 can drive the driving gear 33 to maintain the state that the two driven racks 37 are not adjusted by stretching, and the clutch assembly 50 does not conduct the transmission between the adjusting knob 31 and the driving gear 33 when the two driven racks 37 are not adjusted by stretching in the stretching adjustment. Therefore, the pinion gear 33, the two driven racks 37, and the first elastic member 35 constitute a coarse adjustment mechanism. That is, when the driving gear 33 is in a free state capable of rotating in two directions (the first direction and the second direction), the user can directly pull the two tie pieces by directly pulling the two driven racks 37, so that the two tie pieces are enclosed to form a wearing size larger than the wearing part, and the wearing device can be conveniently worn. And after being worn, the driving gear 33 can be driven by the first elastic piece 35 to rotate and reset so as to drive the two driven racks 37 to approach each other, so that the two binding pieces can be initially tightened. Since the telescopic adjusting mechanisms 100 only have the first elastic member 35 to provide elastic force for limiting and tightening, the two telescopic adjusting mechanisms 100 have limited contraction force and are difficult to wear stably. Therefore, the fine adjustment mechanism is further constituted by the adjustment knob 31 and the clutch assembly 50. In particular, the adjustment knob 31 may be used to provide an operating position, and is at least partially exposed for rotational operation by a user. The clutch assembly 50 is configured to allow transmission between the adjustment knob 31 and the drive gear 33 when the adjustment knob 31 is rotated in a first direction, as shown in fig. 4. Therefore, the first elastic member 35 drives the driving gear 33 to rotate and return in the first direction by its deformation elasticity, so as to drive the two driven racks 37 to approach each other. Can further finely tune through adjust knob 31, rotate along the first direction through drive adjust knob 31, can the separation and reunion subassembly 50 switch on the transmission between adjust knob 31 and the driving gear 33 to at drive adjust knob 31 along the pivoted in-process of first direction, can drive driving gear 33 simultaneously and continue to rotate along the first direction, and then drive two driven gears and further be close to each other. When the two strap members are contracted to have proper tightening force, the driving of the adjusting knob 31 is cancelled, the clutch component 50 at the moment is blocked by the stopping structure 70 to rotate along the second direction, and the driving gear 33 communicated with the clutch component can be blocked to rotate along the second direction, so that the stable limiting of the two driven gears and the strap members after the two strap members are adjusted in place is ensured. When the wearable device needs to be removed, the adjusting knob 31 can be driven to rotate along the second direction, so that the transmission between the adjusting knob 31 and the driving gear 33 can be blocked by the clutch assembly 50, as shown in fig. 4. At this time, it can be said that the locking of the rotation of the driving gear 33 in the second direction is released, so that the user can directly pull the two driven racks 37 or the strap connected to the driven racks 37 to rapidly extend the telescopic adjustment mechanism 100 and rapidly remove the wearable device.

The utility model discloses a technical scheme's flexible adjustment mechanism 100 is when being applied to wearing equipment, because flexible adjustment mechanism 100's clutch assembly 50 does not switch on its and adjustment assembly 30's driven between the driving gear 33 when initial condition for driving gear 33 can carry out two-way free rotation. At this time, the user can directly pull the two driven racks 37 to adjust the elongation of the wearing apparatus and then directly wear the wearing apparatus. After the human body part is worn and the pulling force on the two driven racks 37 is cancelled, the first elastic part 35 can drive the gear to rotate and reset under the action of the deformation elastic force of the first elastic part, and the two racks are driven to mutually approach and contract in the rotating and resetting process, so that the initial wearing and the positioning of the telescopic adjusting mechanism 100 on the human body are realized. Then, the user can drive the adjusting knob 31 to rotate in a first direction (which may be one of clockwise and counterclockwise), and at this time, the clutch assembly 50 can conduct transmission between the adjusting knob 31 and the driving gear 33, so that the user can drive the driving gear 33 to rotate in the process of driving the adjusting knob 31 to rotate in the first direction. The driving gear 33 can drive the two driven racks 37 to approach each other during the rotation process, so that the telescopic adjusting mechanism 100 can be contracted again to have a certain wearing force to be stably worn on a human body. Then, the stop structure 70 is used for preventing the clutch assembly 50 from rotating along the second direction when the transmission between the adjusting knob 31 and the driving gear 33 is conducted, so that the driving gear 33 of the adjusting main machine cannot rotate along the second direction (the other one of the clockwise direction and the counterclockwise direction), the telescopic adjusting mechanism 100 is ensured to be stably limited under the state of having a certain contraction force, and the final wearing and adjusting on the human body is completed.

It can be seen from this that, the setting of the structure of flexible adjustment mechanism 100 in this scheme for the user can directly extend through two driven racks 37 of pulling earlier when using, and order about two driven racks 37 by first elastic component 35 and carry out preliminary shrink and come the human position of wearing of adaptation, in order to reach comparatively quick flexible adjustment mechanism 100 to flexible adjustment mechanism 100 and carry out preliminary adjustment. After finishing preliminary adjustment, the driving gear 33 is driven to rotate by driving the adjusting knob 31 along the first direction, so that the two driven racks 37 are further contracted, and the telescopic adjusting mechanism 100 of the telescopic adjusting mechanism 100 is further precisely adjusted. Compared with the telescopic adjusting mechanism 100 in the prior art, the telescopic adjusting mechanism needs the user to always perform the operation of driving the adjusting knob 31 which is time-consuming and labor-consuming in the adjusting process. Adjustment mechanism in this scheme is when using, because it has primary regulation and accurate regulation, and just make the preliminary adaptation of flexible adjustment mechanism 100 in human body after primary regulation is accomplished, so only need user drive adjust knob 31 to rotate the short time during accurate regulation (can rotate even and be less than the round), guarantee that flexible adjustment mechanism 100 can further have certain shrink power can. At this moment, tentatively adjust comparatively simply swiftly with accurate regulation homogeneous phase, need not the user and carry out the regulation operation that comparatively wastes time and energy for can improve the convenience that telescopic adjusting mechanism 100 used, thereby promote user's use and experience.

When the wearable device needs to be taken down, the adjusting knob 31 of the adjusting assembly 30 can be driven to rotate along the second direction, so that the transmission between the adjusting knob 31 and the driving gear 33 is blocked. At this time, the driving gear 33 is unlocked again and can rotate freely in two directions, so that the user can rapidly take down the wearable device when pulling the two driven racks 37. It can be seen that the unlocking operation of the telescopic adjusting mechanism 100 is also simple, and the two driven racks 37 can be extended away from each other without requiring the user to perform complicated operation of driving the adjusting knob 31 to rotate the driving gear 33, so that the use convenience of the telescopic adjusting mechanism 100 is further improved, and the use experience of the user is further improved.

Referring to fig. 2, fig. 4 and fig. 5, in an embodiment of the present invention, the clutch assembly 50 includes a rotating wheel 51 and a sliding member 53, the rotating wheel 51 is rotatably disposed on the mounting carrier 10, and a rotation axis of the rotating wheel 51 is parallel to rotation axes of the adjusting knob 31 and the driving gear 33 and can be abutted and driven by the adjusting knob 31; the sliding member 53 is movably disposed on the mounting carrier 10, and when the adjusting knob 31 drives the rotating wheel 51 to rotate along a first direction, the sliding member 53 is movable to conduct the transmission between the rotating wheel 51 and the driving gear 33, and when the adjusting knob 31 rotates relative to the rotating wheel 51 along a second direction, the sliding member 53 is movable to block the transmission between the rotating wheel 51 and the driving gear 33.

In this embodiment, since the turning wheel 51 performs a turning motion as does the adjustment knob 31, the adjustment knob 31 facilitates its turning motion to be transmitted to the clutch pack 50. What is more important, when the adjusting knob 31 is rotated in the first direction, the rotating wheel 51 is driven to rotate, and the sliding member 53 is driven to move to a position where the transmission between the rotating wheel 51 and the driving gear 33 is conducted. When the adjustment knob 31 is rotated in the second direction, the rotating wheel 51 is not rotated, and the sliding member 53 is driven to move to a position where the transmission between the rotating wheel 51 and the driving gear 33 is blocked. Therefore, it can be said that the clutch assembly 50 at this time adopts a purely mechanical mechanism for identifying the rotation direction of the adjustment knob 31, that is, the rotation wheel 51 can be determined to rotate in a first direction when being rotated together by the adjustment knob 31, and the rotation of only the adjustment knob 31 relative to the rotation wheel 51 can be determined to rotate in a second direction opposite to the first direction. At this time, a purely mechanical mechanism is adopted to identify the rotation direction of the adjusting knob 31, so that the telescopic adjustment does not involve a circuit, an air path and the like in the part of the structure, and the use safety can be improved. Of course, the present invention is not limited thereto, and in other embodiments, when the clutch assembly 50 does not include the rotating wheel 51, an angle sensor, a steering angle sensor, or the like may be provided. At this time, when the sensor detects that the adjustment knob 31 is rotated in the first direction, the sensor may transmit a first direction rotation signal to the sliding member 53, so that the sliding member 53 is timely moved to a position where the transmission between the rotating wheel 51 and the driving gear 33 is conducted. When the sensor detects that the adjustment knob 31 is rotated in the second direction, a second direction rotation signal may be transmitted to the slider 53 so that the slider 53 is timely moved to a position where the transmission between the rotary wheel 51 and the driving gear 33 is blocked.

Further, referring to fig. 6 to 11, a sliding member 53 is rotatably and slidably disposed between the driving gear 33 and the rotating wheel 51, a rotating axis of the sliding member 53 is collinear with rotating axes of the rotating wheel 51 and the driving gear 33, and a sliding direction of the sliding member 53 is parallel to the rotating axis of the rotating wheel 51; the slider 53 is provided with a first engaging tooth 531 at an end close to the drive gear 33 and a second engaging tooth 533 at an end close to the rotary wheel 51; the driving gear 33 is provided with a first driving tooth 331 at a position corresponding to the first engaging tooth 531, and the first driving tooth 331 is engaged with the first engaging tooth 531; the rotating wheel 51 is provided with a second driving gear 511 at a position corresponding to the second engaging gear 533, and the second driving gear 511 is engaged with the second engaging gear 533 when the sliding member 53 slides to conduct the transmission between the rotating wheel 51 and the driving gear 33.

In the present embodiment, the sliding member 53 is rotatably provided to have the same rotational movement as the rotary wheel 51 and the driving gear 33, thereby facilitating the transmission of the rotational movement of the adjustment knob 31 and the rotary wheel 51 to the driving gear 33 directly through the sliding member 53. The sliding member 53 can be made to have different positions by sliding, so that the transmission between the rotating wheel 51 and the driving gear 33 can be conducted or blocked at different positions. The first driving tooth 331 and the first engaging tooth 531 are respectively provided on the driving gear 33 and the slider 53, so that the slider 53 and the driving gear 33 can be in meshing transmission, thereby improving the stability of the transmission therebetween. Similarly, the second driving teeth 511 and the second engaging teeth 533 are distributed on the rotating wheel 51 and the sliding member 53, so that the sliding member 53 and the rotating wheel 51 can be engaged for transmission, and the stability of transmission between the two can be improved. It should be noted that, the present application is not limited thereto, and in other embodiments, the sliding member 53 may be only slidably disposed, and in this case, a rotatable rotating structure may be additionally disposed on the sliding member 53, so that the rotation of the rotating wheel 51 is transmitted to the driving gear 33 through the rotating structure. The transmission between the slider 53, the rotary wheel 51, and the drive gear 33 may be a friction transmission by surface-to-surface contact, or may be a contact transmission by a convex pillar in contact with each other.

Further, referring to fig. 4, fig. 6, fig. 7, fig. 8 and fig. 9, one end of the stopping structure 70 is used for abutting against the blocking rotating wheel 51 to rotate along the second direction, and the other end can abut against the blocking sliding member 53 to slide until the second engaging tooth 533 is engaged with the second driving tooth 511; when the adjusting knob 31 drives the rotating wheel 51 to rotate along the first direction, one end of the stopping structure 70, which is used for abutting against and blocking the rotating wheel 51 to rotate along the second direction, can also be abutted against and driven by the rotating wheel 51, so that the other end of the stopping structure 70 is not abutted against and blocked on the sliding part 53; when the adjustment knob 31 is rotated in a second direction opposite to the first direction relative to the rotating wheel 51, the adjustment knob 31 can abut on the sliding member 53 to slide until the second engaging teeth 533 are disengaged from the second driving teeth 511.

In this embodiment, the stopping structure 70 can be used to block the rotation of the rotating wheel 51 in the second direction when the sliding member 53 turns on the transmission between the adjusting knob 31 and the driving gear 33, and can also be used to abut against the blocking sliding member 53 to move the second engaging tooth 533 to engage with the second driving tooth 511, that is, to make the sliding member 53 maintain the state of not turning on the driving gear 33. Thus, the rotation limit of the rotating wheel 51 in the second direction and the limit of the sliding member 53 in the state of not conducting the driving gear 33 can both adopt the same structure, thereby facilitating the simplification of the structure of the telescopic adjustment mechanism 100 and improving the convenience of manufacturing the same. When the adjusting knob 31 rotates relative to the rotating wheel 51 in a second direction opposite to the first direction, the sliding member 53 can be directly abutted by the adjusting knob 31 to slide until the second engaging teeth 533 are disengaged from the second driving teeth 511, so as to block the transmission of the rotating wheel 51 to the driving gear 33. This also eliminates the need for an additional steering detection structure for rotating the adjustment knob 31 in the second direction and a driving structure for driving the slider 53 to move to a position where the transmission of the rotating wheel 51 to the driving gear 33 is blocked, thereby facilitating further simplification of the structure of the telescopic adjustment mechanism 100 to further improve the convenience of manufacturing thereof. Wherein, the rotating wheel 51 is provided with a convex tooth 513 along the rotating circumferential direction thereof, the stopping structure 70 comprises a pawl 71 and a second elastic member, the pawl 71 is rotatably mounted on the carrier 10, one end of the pawl 71 abuts against the convex tooth 513 to abut against and block the rotating wheel 51 from rotating along the second direction, and the other end can abut against the blocking sliding member 53 to move the second engaging tooth 533 to be meshed with the second driving tooth 511; when the adjusting knob 31 drives the rotating wheel 51 to rotate along the first direction, one end of the pawl 71 abutting against the convex tooth 513 can also be abutted against and driven by the rotating wheel 51, so that the other end of the pawl 71 is not abutted against and blocked on the sliding piece 53; a second resilient member is provided between the mount carrier 10 and the pawl 71 to urge the pawl 71 to rotationally reset. At this time, the abutting engagement of the pawl 71 with the tooth 513 on the rotatable wheel 51 allows rotation of the rotatable wheel 51 in the first direction while restricting rotation of the rotatable wheel 51 in the second direction. The second elastic member (which may be a coil spring or other elastic plastic member) may be used to provide an elastic force to drive the pawl 71 to return, thereby ensuring that the pawl 71 can repeatedly and stably operate. Since both the pawl 71 and the second resilient member are purely mechanical mechanisms, the pawl 71 may also be formed without the involvement of electrical circuits, air passages, etc., which may be advantageous in improving the safety of use of the stop structure 70. Similarly, in order to facilitate that the sliding member 53 can move to the position for conducting the rotating wheel 51 and the driving gear 33 in time when the pawl member 71 rotates to the position where the sliding member 53 is not abutted and blocked after the adjusting knob 31 is driven to rotate along the first direction, the clutch assembly 50 further includes a third elastic member (which may be a coil spring or other elastic plastic member), which is disposed between the driving gear 33 and the sliding member 53, so as to drive the sliding member 53 to slide until the second engaging teeth 533 are engaged with the second driving teeth 511. In addition, it should be noted that, in other embodiments, the stopping structure 70 may also include an air cylinder and a stopping post connected to the air cylinder, so that the air cylinder drives the stopping post to be inserted into the rotating wheel 51 or the sliding member 53, thereby blocking the clutch assembly 50 from rotating in the second direction when the transmission between the adjusting knob 31 and the driving gear 33 is conducted. At this time, the sliding part 53 may be additionally abutted and blocked on a side departing from the third elastic part by a blocking structure composed of an air cylinder and a blocking plate connected to the air cylinder.

Referring to fig. 3 to 8, in an embodiment of the present invention, the sliding member 53 further has a third engaging tooth 537 at an end close to the rotating wheel 51, and a part of the adjusting knob 31 is rotatably passed through the rotating wheel 51, and a third driving tooth 311 is disposed at a position corresponding to the third engaging tooth 537; when the adjusting knob 31 is rotated in a second direction opposite to the first direction relative to the rotating wheel 51, the adjusting knob 31 drives the sliding member 53 to slide until the second engaging teeth 533 are disengaged from the second driving teeth 511 through the cooperation of the third driving teeth 311 and the third engaging teeth 537.

In this embodiment, the adjusting knob 31 abuts against and drives the sliding member 53 through the engagement of the third driving teeth 311 and the third engaging teeth 537, so that the adjusting knob 31 and the sliding member 53 can be engaged and driven, and the stability of the transmission between the adjusting knob 31 and the sliding member 53 can be improved. Here, two opposite side surfaces of the third engaging tooth 537 in the rotating direction around the adjusting knob 31 may be a straight surface, and the other one may be a curved surface, so that when the adjusting knob is rotated around the second direction relative to the rotating wheel 51, the sliding member 53 may be driven to slide in a direction approaching the driving gear 33 by pressing the curved surface.

Further, referring to fig. 7 to fig. 11 in combination, a reset member 535 is movably mounted on one end of the sliding member 53 close to the rotating wheel 51, and the reset member 535 is provided with a third engaging tooth 537; fourth driving tooth 515 is provided on rotating wheel 51 at a position corresponding to second driving tooth 511, and fourth driving tooth 515 and third driving tooth 311 have the same structure and are in contact with third meshing tooth 537.

In the present embodiment, the third engagement tooth 537 is provided on the reset member 535, and the reset member 535 is movably mounted on the sliding member 53. In this way, the third tooth 537 can now be arranged on the reset element 535 which has a relatively small volume and a relatively simple structure, and then can be mounted on the sliding element 53, which is advantageous for improving the convenience of machining and forming. In addition, the rotating wheel 51 is provided with a fourth driving tooth 515 at a position corresponding to the second driving tooth 511, and the fourth driving tooth 515 and the third engaging tooth 537 are abutted to limit positions, so that the rotating wheel 51 can be limited in the circumferential direction when the adjustment knob 31 rotates in the second direction relative to the rotating wheel 51, and the slider and the adjusting knob 31 can be driven to slide in a direction approaching the driving gear 33.

Further, referring to fig. 3, fig. 4, fig. 7, fig. 9, fig. 10 and fig. 11, the sliding member 53 is disposed in a ring structure, and the restoring member 535 is movably installed at an inner side of one end of the sliding member 53 close to the rotating wheel 51; the second engaging tooth 533 is disposed on an inner sidewall of the sliding member 53 near one end of the rotating wheel 51, and is spaced apart from the reset member 535; a connecting cylinder 517 is arranged on one side of the rotating wheel 51 facing the driving gear 33, a second driving tooth 511 is arranged on the outer side wall of the connecting cylinder 517, and a fourth driving tooth 515 is arranged on the inner side of the connecting cylinder 517; part of the structure of the adjustment knob 31 passes through the connecting cylinder 517, and the adjustment rotation through the connecting cylinder 517 is provided with a third drive tooth 311.

In this embodiment, the slider 53 is formed in a ring-shaped configuration, so that it is convenient to install the restoring member 535 and provide the second engaging teeth 533 at the inner side thereof. Meanwhile, the adjusting knob 31, the rotating wheel 51, the sliding piece 53 and the like are also conveniently arranged to be more compact, so that the overall size of the telescopic structure is further reduced, and the convenience of subsequently arranging the telescopic adjusting mechanism 100 is improved. Similarly, in order to make the sliding member 53 and the driving gear 33 also be disposed compactly, please refer to fig. 10 to 12, a side of the driving gear 33 facing the rotating wheel 51 may be provided with a mounting groove 333, a groove wall of the mounting groove 333 for enclosing a notch thereof is provided with a first driving tooth 331; one end of the sliding member 53, which is far away from the rotating wheel 51, is rotatably and slidably inserted into the mounting groove 333, the sliding member 53 is disposed in an annular structure, and the first engaging tooth 531 is disposed on an outer side wall of one end of the sliding member 53, which is close to the driving gear 33.

Referring to fig. 2 and fig. 3, in an embodiment of the present invention, the adjusting knob 31 is sleeved outside the rotating wheel 51, the adjusting knob 31 is provided with a first abutting portion 313, the rotating wheel 51 is provided with a second abutting portion 519, and the adjusting knob 31 can be driven by the first abutting portion 313 and the abutting portion in an abutting manner to abut against the rotating wheel 51; the telescopic adjustment mechanism 100 further includes a fourth elastic member disposed on the rotating wheel 51 for urging the first abutting portion 313 to abut against the second abutting portion 519.

In this embodiment, the adjusting knob 31 is sleeved on the rotating wheel 51 at the outer side, so that the two installation devices can be more compact, and the overall size of the telescopic adjusting mechanism 100 can be reduced, so that the telescopic adjusting mechanism 100 can be arranged in a limited space on the wearable device in the following process. And a fourth elastic member (which may be a torsion spring) is provided to allow the adjusting knob 31 and the rotating wheel 51 to have a corresponding abutting relationship. That is, when the adjustment knob 31 is rotated in the first direction, the rotation can be brought into abutment. When the rotation wheel 51 is limited by the stopper 70 and does not rotate, the adjustment knob 31 needs to overcome the elastic force of the fourth elastic member to rotate in the second direction.

Referring to fig. 10 to 12, in an embodiment of the present invention, the first elastic element 35 is a spiral spring, an inner connecting arm is disposed at an inner end of the spiral spring, an outer connecting arm is disposed at an outer end of the spiral spring, the inner connecting arm is inserted into the driving gear 33, and the outer connecting arm is inserted into the mounting carrier 10.

In this embodiment, the first elastic element 35 is configured as a spiral spring, which can be conveniently sleeved and installed. At this time, the driving gear 33 may be provided with an installation cylinder 335 for the spiral spring to be sleeved and installed, and the inner connection arm may be inserted into the installation cylinder 335.

In an embodiment of the present invention, the mounting carrier 10 may include a bottom plate 11, a housing 13 and a middle frame 15, the driving gear 33 and the rack may be mounted on the bottom plate 11, the housing 13 may cover the bottom plate 11, the middle frame 15 is connected to the housing 13, and cooperates with the housing 13 to clamp the adjusting knob 31 and the rotating wheel 51. The mounting carrier 10 is thus divided into a plurality of parts for production and then assembled to form a whole, which can improve the convenience of processing and molding the same.

In an embodiment of the present invention, the use process of the telescopic adjusting mechanism 100 in the present application may be: when the wearing device is worn, the sliding part 53 of the transmission structure is not slid to be meshed with the rotating wheel 51, so that the driving gear 33 is in a bidirectional free rotating state. At this time, the user can directly pull the two driven racks 37 or the two strap members, so that the extension of the two driven racks can enclose a wearing space slightly larger than the size of the wearing part (such as the head), thereby facilitating the user to wear the wearing part on the wearing part quickly. And after the preliminary completion was worn, first elastic component 35 can order about driving gear 33 under the effect of its deformation elasticity and reset for the bandage spare can be automatic accomplish preliminary tightening up fast. Then, in order to improve the wearing stability of the wearable device, the adjustment knob 31 may be rotated in the first direction by driving. During the rotation of the adjustment knob 31 in the first direction, the rotation wheel 51 is driven to rotate due to the abutting relationship between the adjustment knob 31 and the rotation wheel 51. In the process of rotation of the rotating wheel 51, one end of the pawl 71 can be driven to rotate, so that the other end of the pawl does not abut against and obstruct one side of the sliding part 53 departing from the driving gear 33. Therefore, the sliding member 53 can slide toward the rotating wheel 51 by the third elastic member, so that both ends of the sliding member 53 are engaged with the driving gear 33 and the rotating wheel 51, respectively. At this time, the adjusting knob 31 is rotated in the first direction, so that the driving gear 33 is indirectly driven, and the two driven racks 37 are driven to further approach to tighten the strap member. Until the tightening force required by the user is adjusted, the acting force acting on the adjusting knob 31 can be cancelled, at this time, the rotating wheel 51 is prevented from rotating in a second direction opposite to the first direction due to the action of the pawl 71, so that the limitation of the sliding part 53, the driving gear 33 and the driven rack 37 is indirectly realized, and the wearing device can be stably worn on a human body. When the wearable device needs to be taken down, the adjusting knob 31 can be driven to rotate along the second direction, and at the moment, the rotating wheel 51 still cannot rotate, so that the sliding piece 53 engaged with the rotating wheel cannot rotate. However, since the adjustment knob 31 and the sliding member 53 are also in a meshing relationship, the adjustment knob 31 can abut against and drive the sliding member 53 to slide in a direction approaching the driving gear 33 through the cooperation of the third driving tooth 311 and the fourth driving tooth 515, and thus the meshing between the sliding member 53 and the rotating wheel 51 is separated. Meanwhile, the second elastic member can drive the pawl 71 to rotate and reset in time, so that one end of the pawl 71 can abut and block one side of the sliding member 53 away from the driving gear 33 again. Therefore, after the adjustment knob 31 is driven to rotate in the second direction, the transmission between the rotating wheel 51 and the sliding member 53 can be blocked again, so that the driving gear 33 can rotate freely in both directions again, so that the user can directly pull the two driven racks 37 or the binding members to quickly remove the wearable device.

The utility model discloses still provide a wearing equipment, this wearing equipment include flexible adjustment mechanism 100, and the concrete structure of this flexible adjustment mechanism 100 refers to above-mentioned embodiment, because this wearing equipment has adopted the whole technical scheme of above-mentioned all embodiments, consequently has all beneficial effects that the technical scheme of above-mentioned embodiment brought at least, and the repeated description is no longer given here. Wherein, this wearing equipment can be wear display device. The head-mounted display device can comprise a display host, a rear shell and two binding pieces; the back casing is relative interval setting with the demonstration host computer, and the one end of two bandage pieces can be connected respectively in the relative both ends of demonstration host computer, and the both ends of locating the back casing are inserted to the other end slidable. At this time, the mount carrier 10 in the telescopic adjustment mechanism 100 may be directly formed by a part of the structure on the rear housing; of course, the mounting carrier 10 may be provided separately from the rear housing, and may be used to provide a mounting position for mounting the adjustment assembly 30, the clutch assembly 50, the stopper 70, and the like. Likewise, the two driven racks 37 of the retraction mechanism may be formed directly by a portion of the structure on the two straps; of course, two driven racks 37 may be additionally provided independently of the two binding members, and the two driven racks 37 may be respectively connected to the two binding members to correspondingly drive the two driven racks 37 to be tightened or extended when the two driven racks 37 are driven to approach each other or move away from each other. In some embodiments, the wearable device may also be a waist-worn device. The waist-worn device may include a main body portion (e.g., a part for physical therapy or shaping of a human body, etc.), and two strap members connected to the main body portion. In this case, the mounting carrier 10 and the driving part may be disposed at a relative interval, and the two binding members may be directly connected to the two driven racks 37.

The above only is the preferred embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structure changes made by the contents of the specification and the drawings under the inventive concept of the present invention, or the direct/indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A telescoping adjustment mechanism, comprising:

mounting a carrier;

2. The telescoping adjustment mechanism of claim 1, wherein the clutch assembly comprises:

the rotating wheel is rotatably arranged on the mounting carrier, and the rotating axis of the rotating wheel is parallel to the rotating axes of the adjusting knob and the driving gear and can be abutted and driven by the adjusting knob; and

3. The telescoping adjustment mechanism of claim 2, wherein said sliding member is rotatably and slidably disposed between said drive gear and said drive gear, wherein the axis of rotation of said sliding member is collinear with the axis of rotation of said drive gear and said drive gear, and wherein the direction of sliding of said sliding member is parallel to the axis of rotation of said drive gear;

4. A telescopic adjustment mechanism according to claim 3, wherein said stop means has one end for abutting against and blocking rotation of said rotatable wheel in a second direction and another end for abutting against and blocking sliding of said slider until said second engagement tooth engages said second drive tooth;

5. A telescopic adjustment mechanism according to claim 4, wherein said rotatable wheel is provided with teeth along a circumferential direction of rotation thereof, said stop structure comprises a pawl member and a second resilient member, said pawl member is rotatably mounted on said mounting carrier, one end of said pawl member abuts against said teeth to stop said rotatable wheel from rotating in the second direction, and the other end of said pawl member abuts against said second engaging teeth to block said slider from moving, and said second engaging teeth are engaged with said second driving teeth; when the adjusting knob drives the rotating wheel to rotate along a first direction, one end of the pawl piece, which is abutted to the convex tooth, can be abutted to drive by the rotating wheel, so that the other end of the pawl piece is not abutted to and separated from the sliding piece; the second elastic piece is arranged between the mounting carrier and the pawl piece so as to drive the pawl piece to rotate and reset;

6. The telescoping adjustment mechanism of claim 4, wherein said slider member is further provided with a third engagement tooth at an end adjacent said rotatable wheel, a portion of said adjustment knob being rotatably disposed through said rotatable wheel and being provided with a third drive tooth at a location corresponding to said third engagement tooth;

7. The telescoping adjustment mechanism of claim 6, wherein a reset member is movably mounted to the slider at an end adjacent the rotatable wheel, the reset member having the third engagement tooth;

8. The telescoping adjustment mechanism of claim 7, wherein said slider is disposed in an annular configuration, and said reset member is movably mounted to an inner side of said slider adjacent one end of said rotatable wheel;

a connecting cylinder is arranged on one side, facing the driving gear, of the rotating wheel, the second driving teeth are arranged on the outer side wall of the connecting cylinder, and the fourth driving teeth are arranged on the inner side of the connecting cylinder;

9. The telescopic adjustment mechanism according to claim 8, wherein the driving gear has a mounting groove on a side facing the rotating wheel, and the groove wall of the mounting groove for enclosing the notch is provided with the first driving tooth;

10. The telescopic adjustment mechanism according to any one of claims 2 to 9, wherein the adjustment knob is sleeved outside the rotating wheel, the adjustment knob is provided with a first abutting portion, the rotating wheel is provided with a second abutting portion, and the adjustment knob can be driven by the abutting portion through the cooperation of the first abutting portion and the abutting portion; the telescopic adjusting mechanism further comprises a fourth elastic piece, and the fourth elastic piece is arranged on the rotating wheel so as to drive the first abutting part to abut against the second abutting part;

11. A wearable device characterized by comprising a telescopic adjustment mechanism according to any one of claims 1 to 10.