CN114217443A - Tightness adjusting mechanism and wearable equipment with same - Google Patents
Tightness adjusting mechanism and wearable equipment with same Download PDFInfo
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- CN114217443A CN114217443A CN202111681039.0A CN202111681039A CN114217443A CN 114217443 A CN114217443 A CN 114217443A CN 202111681039 A CN202111681039 A CN 202111681039A CN 114217443 A CN114217443 A CN 114217443A
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- 230000002093 peripheral effect Effects 0.000 claims description 7
- 238000007373 indentation Methods 0.000 claims description 4
- 238000009434 installation Methods 0.000 claims description 4
- 230000009471 action Effects 0.000 claims description 3
- 238000004891 communication Methods 0.000 claims description 2
- 230000008878 coupling Effects 0.000 claims 3
- 238000010168 coupling process Methods 0.000 claims 3
- 238000005859 coupling reaction Methods 0.000 claims 3
- 230000003993 interaction Effects 0.000 description 4
- 230000008602 contraction Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/01—Head-up displays
- G02B27/017—Head mounted
- G02B27/0176—Head mounted characterised by mechanical features
Abstract
The invention provides a tightness adjusting mechanism and wearable equipment with the same, wherein the tightness adjusting mechanism comprises a shell, a first telescopic belt, a second telescopic belt and an adjusting component, a slide channel groove is arranged in the shell, a first slide channel hole is formed in the left side of the shell, and a second slide channel hole is formed in the right side of the shell; the first telescopic belt extends into the chute, a first opening positioned in the chute is formed in the first telescopic belt, and a first rack is arranged in the first opening; the second telescopic belt extends into the slide way groove, a second opening positioned in the slide way groove is formed in the second telescopic belt, a second rack is arranged in the second opening, and the first rack and the second rack are distributed in a vertical opposite mode; the adjusting component is rotatably arranged on the shell and meshed with the first rack and the second rack, and the adjusting component is driven to rotate, so that the first telescopic belt is retracted into the first slide way hole, and the second telescopic belt is retracted into the second slide way hole, or the first telescopic belt extends out of the first slide way hole, and the second telescopic belt extends out of the second slide way hole.
Description
Technical Field
The invention relates to the technical field of wearable equipment, in particular to a tightness adjusting mechanism.
Background
With the continuous development of economy and the continuous progress of science and technology, more and more wearable devices such as head-mounted electronic equipment, smart watches, smart bracelets and the like appear in people's lives. Among them, the application of the head-mounted electronic device in human life is more and more widespread, and the head-mounted electronic device is generally fixed to the head through a bandage-type head-mounted structure. The head-wearing structure is mainly divided into a common bandage type and a mechanical type. Ordinary bandage formula generally comprises two side bandages, and two side bandages pass through the magic subsides or the buckle realizes wearing the regulation of size to make the head wear can with the fine laminating of head. When the ordinary bandage formula structure of wearing unclamped, need both hands concurrent operation, it is more troublesome to operate to two side bandages loosen easily after long-time the use, have reduced user and have used experience. The mechanical head-wearing structure is generally adjusted by adopting a gear and a rack, two problems also exist along with the matching of a ratchet wheel and a ratchet, one is that noise can be generated during adjustment, the other is that the adjustment can be realized only by pressing an operation key and rotating a knob at the same time during adjustment, the operation is troublesome, and the high requirement of a user on the use experience cannot be met.
Disclosure of Invention
The invention aims to provide a tightness adjusting mechanism which is simple to operate and low in noise.
The second purpose of the invention is to provide a wearable device with simple tightness adjustment operation and low noise.
In order to achieve the first purpose, the invention provides a tightness adjusting mechanism which comprises a shell, a first telescopic belt, a second telescopic belt and an adjusting assembly, wherein a slide channel groove is formed in the shell, a first slide channel hole communicated with the left end of the slide channel groove is formed in the left side of the shell, and a second slide channel hole communicated with the right end of the slide channel groove is formed in the right side of the shell; the right end of the first telescopic belt extends into the chute through the first chute hole, a first opening positioned in the chute is formed in the first telescopic belt, and a first rack is arranged on the upper inner wall of the first opening; the left end of the second telescopic belt extends into the chute groove through the second chute hole, a second opening positioned in the chute groove is formed in the second telescopic belt, a second rack is arranged on the lower inner wall of the second opening, and the first rack and the second rack are distributed in a vertical opposite mode; the adjusting part rotationally set up in on the casing, just adjusting part's one end penetrate extremely in the slide groove and respectively with first rack the second rack meshing, borrow and order about adjusting part rotates, makes first telescopic band removes the indentation first slide is downthehole and second telescopic band removes the indentation the second slide is downthehole, perhaps, makes first telescopic band removes to stretch out first slide hole and second telescopic band removes to stretch out the second slide hole.
Compared with the prior art, the adjusting assembly of the tightness adjusting mechanism is characterized in that the first gear is arranged on the first telescopic belt, the second rack is arranged on the second telescopic belt, the first rack and the second rack are arranged to be vertically and oppositely distributed, and then the adjusting assembly is respectively meshed with the first rack and the second rack, so that the first telescopic belt can be movably retracted into the first slideway hole and the second telescopic belt can be movably retracted into the second slideway hole by driving the adjusting assembly to rotate, or the first telescopic belt can be movably extended out of the first slideway hole and the second telescopic belt can be movably extended out of the second slideway hole, so that the tightness of the first telescopic belt and the second telescopic belt can be adjusted, the tightness adjusting mechanism can be operated by one hand, the operation is simple, no ratchet mechanism is provided, and the noise is low.
Preferably, the casing includes preceding shell and backshell, preceding shell with the backshell is connected and encloses and be equipped with a mounting cavity, the slide groove form in on the backshell and be located in the mounting cavity, first slide hole form in the left side of backshell, second slide hole form in the right side of backshell, adjusting part rotationally set up in on the preceding shell.
Preferably, the housing further includes a support member disposed in the mounting cavity and connected to the rear housing, and the support member covers the chute.
Preferably, the front shell is provided with a mounting groove communicated with the mounting cavity, and the adjusting component is mounted in the mounting groove.
Preferably, the adjusting assembly includes a knob and an adjusting gear, the knob is connected to the adjusting gear, the adjusting gear is rotatably disposed in the mounting groove and engaged between the first rack and the second rack, and the knob is operated to drive the adjusting gear to rotate so as to drive the first rack and the second rack to move.
Preferably, the adjusting gear includes a gear fixing portion and a gear body portion connected to one side of the gear fixing portion, the other side of the gear fixing portion is connected to the knob, and the gear body portion is rotatably disposed in the mounting groove and engaged between the first rack and the second rack.
Preferably, the mounting groove includes a knob mounting groove portion, a gear mounting groove portion and a connecting hole portion, the knob mounting groove portion, the gear mounting groove portion and the connecting hole portion are formed by sequentially extending from the front side of the front housing to the rear side, the support member is provided with a first through hole, the connecting hole portion penetrates through the first through hole and is communicated with the mounting cavity, the knob is disposed in the knob mounting groove portion, the gear fixing portion is disposed in the gear mounting groove portion, and the adjusting gear is rotatably disposed in the connecting hole portion.
Preferably, the adjusting assembly further includes a ball and a first elastic member, the bottom surface of the gear mounting groove portion is provided with a plurality of first ball mounting grooves distributed around the connecting hole portion, the first elastic member is disposed in the first ball mounting grooves, the gear fixing portion is provided with a plurality of second ball mounting grooves along the circumferential direction thereof, one end of the ball is disposed in the first ball mounting groove and abuts against the first elastic member, and the other end of the ball is engaged in one of the second ball mounting grooves; the adjusting gear rotates, so that the ball is clamped with different second ball mounting grooves under the action of the first elastic piece.
Preferably, the adjusting assembly further includes a pressing member, a locking member, a moving member and a second elastic member, the knob is provided with a mounting hole along a front-rear direction thereof, the inner wall of the mounting hole is provided with a plurality of guide grooves along a circumferential direction thereof, a first guide chute and a second guide chute are sequentially connected between rear ends of two adjacent guide grooves, the first guide chute is located behind the second guide chute, and a step portion is formed between the first guide chute and the second guide chute; the pressing piece and the locking piece are movably arranged in the mounting hole in sequence from front to back, the rear end of the pressing piece is provided with a plurality of first guide helical teeth along the circumferential direction, the peripheral side of the pressing piece is convexly provided with a plurality of first guide keys, the front end of the locking piece is provided with second guide helical teeth opposite to the first guide helical teeth, the periphery of the locking piece is convexly provided with a plurality of second guide keys, the oblique groove direction of the first guide oblique tooth is opposite to the oblique tooth direction of the second guide oblique tooth, the oblique tooth surface of the first guide oblique tooth is abutted with the oblique tooth surface of the second guide oblique tooth, the first guide key and the second guide key are respectively movably inserted in the guide grooves, the first guide key is provided with a first inclined surface, the second guide key is provided with a second inclined surface, and the first inclined surface is abutted to the second inclined surface; the movable piece penetrates through the locking piece and is connected with the pressing piece, external teeth are arranged on the outer peripheral side of the movable piece, internal teeth are arranged on the inner wall of the gear installation groove part, and two ends of the second elastic piece are respectively abutted between the movable piece and the adjusting gear; the knob is locked or unlocked by pressing the pressing piece to move backwards so that the outer teeth are meshed with or separated from the inner teeth.
In order to achieve the second object, the invention provides a wearable device, which comprises a device body and the tightness adjusting mechanism, wherein the left end of the first telescopic belt and the right end of the second telescopic belt can be respectively connected to two sides of the device body.
Compared with the prior art, the wearable device of the invention is provided with the tightness adjusting mechanism, the adjusting component of the tightness adjusting mechanism is provided with the first gear on the first telescopic belt, a second rack is arranged on the second telescopic belt, the first rack and the second rack are arranged to be distributed up and down oppositely, then the adjusting component is respectively meshed with the first rack and the second rack, so that the first telescopic belt can move and retract into the first slideway hole and the second telescopic belt can move and retract into the second slideway hole by driving the adjusting component to rotate, or, the first telescopic belt is enabled to move and extend out of the first slideway hole, and the second telescopic belt is enabled to move and extend out of the second slideway hole, thereby adjust the elasticity of first telescopic band and second telescopic band, but and one-hand operation, the elasticity adjustment easy operation, no ratchet mechanism has the characteristics that the noise is little.
Drawings
Fig. 1 is a schematic perspective view of the slack adjuster mechanism of the present invention.
FIG. 2 is an exploded view of the slack adjustment mechanism of the present invention.
Fig. 3 is a perspective view of the first stretch band of the present invention.
Fig. 4 is a perspective view of a second stretch band of the present invention.
Fig. 5 is a perspective view of the rear case of the present invention.
Fig. 6 is a front view of the front housing of the present invention.
Fig. 7 is a top view of the front housing of the present invention.
Fig. 8 is an exploded view of the front housing and support of the present invention.
Fig. 9 is an exploded view of the adjustment assembly of the present invention.
Fig. 10 is an enlarged view at a in fig. 9.
Fig. 11 is a perspective view of the adjusting gear of the present invention.
Fig. 12 is an exploded view of the pressing member and the locking member of the present invention.
Fig. 13 is a perspective view of the pressing member of the present invention.
Fig. 14 is a perspective view of a moving part of the present invention.
Fig. 15 is a perspective view of the fastener of the present invention.
FIG. 16 is a front view of the tightness adjustment mechanism of the present invention.
Fig. 17 is a sectional view taken along the direction B-B in fig. 16.
Detailed Description
In order to explain technical contents and structural features of the present invention in detail, the following description is made with reference to the embodiments and the accompanying drawings.
Referring to fig. 1 to 5, the wearable device of the present invention includes a device body (not shown) and a tightness adjusting mechanism 100. The tightness adjusting mechanism 100 includes a housing 1, a first telescopic belt 2, a second telescopic belt 3, and an adjusting assembly 4. The casing 1 is provided with a slide groove 121 inside, the left side of the casing 1 is provided with a first slide hole 122 communicated with the left end of the slide groove 121, and the right side of the casing 1 is provided with a second slide hole 123 communicated with the right end of the slide groove 121. The right end of the first telescopic belt 2 extends into the slide groove 121 through the first slide hole 122, the first telescopic belt 2 is provided with a first opening 21 located in the slide groove 121, and the upper inner wall of the first opening 21 is provided with a first rack 22. The left end of the second telescopic belt 3 extends into the slide groove 121 through the second slide hole 123, the second telescopic belt 3 is provided with a second opening 31 located in the slide groove 121, the lower inner wall of the second opening 31 is provided with a second rack 32, and the first rack 22 and the second rack 32 are distributed up and down relatively. The adjusting component 4 is rotatably disposed on the housing 1, and one end of the adjusting component 4 penetrates into the sliding channel groove 121 and is respectively engaged with the first rack 22 and the second rack 32, so as to drive the adjusting component 4 to rotate, such that the first retractable belt 2 moves and retracts into the first sliding channel hole 122 and the second retractable belt 3 moves and retracts into the second sliding channel hole 123, or such that the first retractable belt 2 moves and extends out of the first sliding channel hole 122 and the second retractable belt 3 moves and extends out of the second sliding channel hole 123. The left end of the first telescopic belt 2 and the right end of the second telescopic belt 3 can be respectively connected to two sides of the equipment body. However, the main body of the slack adjuster mechanism 100 to which the first extensible belt 2 and the second extensible belt 3 are connected is not limited to this.
Referring to fig. 1, 2 and 5, the housing 1 includes a front shell 11 and a rear shell 12, the front shell 11 is connected to the rear shell 12 and encloses a mounting cavity 13, a chute 121 is formed on the rear shell 12 and located in the mounting cavity 13, a first chute hole 122 is formed on the left side of the rear shell 12, a second chute hole 123 is formed on the right side of the rear shell 12, and the adjusting assembly 4 is rotatably disposed on the front shell 11. Further, the housing 1 further includes a supporting member 14, the supporting member 14 is disposed in the mounting cavity 13 and connected to the rear shell 12, and the supporting member 14 covers the sliding channel 121.
Referring to fig. 1 and 6, the front housing 11 is provided with a mounting groove 111 communicating with the mounting cavity 13, and the adjusting assembly 4 is mounted in the mounting groove 111. The adjusting assembly 4 penetrates into the slide channel 121 through the mounting groove 111 and is engaged with the first rack 22 and the second rack 32 respectively.
Referring to fig. 6 to 9, the adjusting assembly 4 includes a knob 41 and an adjusting gear 42, the knob 41 is connected to the adjusting gear 42, the adjusting gear 42 is rotatably disposed in the mounting groove 111 and engaged between the first rack 22 and the second rack 32, and the knob 41 is operated to drive the adjusting gear 42 to rotate so as to drive the first rack 22 and the second rack 32 to move. Specifically, the adjusting gear 42 includes a gear fixing portion 421 and a gear body portion 422 connected to one side of the gear fixing portion 421, the other side of the gear fixing portion 421 is connected to the knob 41, and the gear body portion 422 is rotatably disposed in the mounting groove 111 and engaged between the first rack 22 and the second rack 32. In the present embodiment, the mounting groove 111 includes a knob 41 mounting groove portion 111a, a gear mounting groove portion 111b, and a connection hole portion 111c formed to extend in sequence from the front side to the rear side of the front case 11, the supporter 14 is provided with a first through hole 141, and the connection hole portion 111c passes through the first through hole 141 and communicates with the mounting cavity 13; the knob 41 is disposed in the knob 41 mounting groove portion 111a, the gear fixing portion 421 is disposed in the gear mounting groove portion 111b, and the adjustment gear 42 is rotatably disposed in the connection hole portion 111 c.
Referring to fig. 8 and 9, the adjusting assembly 4 further includes a ball 43 and a first elastic element 44, the bottom surface of the gear mounting groove 111b is provided with a plurality of first ball mounting grooves 111b2 distributed around the connecting hole 111c, the first elastic element 44 is disposed in the first ball mounting groove 111b2, the gear fixing portion 421 is provided with a plurality of second ball mounting grooves 421a along the circumferential direction thereof, one end of the ball 43 is disposed in the first ball mounting groove 111b2 and abuts against the first elastic element 44, and the other end of the ball 43 is engaged in one of the second ball mounting grooves 421 a; the adjusting gear 42 rotates, so that the balls 43 are engaged with the different second ball mounting grooves 421a by the first elastic member 44. In the process of rotating the adjusting gear 42, the adjusting gear 42 will first press the ball 43 and compress the first elastic member 44, and when the next second ball mounting groove 421a is aligned with the first ball mounting groove 111b2, the ball 43 moves and resets under the action of the first elastic member 44 and is engaged with the second ball mounting groove 421 a. In the present embodiment, the number of the first ball mounting grooves 111b2 and the number of the balls 43 are four and the number of the second ball mounting grooves 421a is 60, thereby urging the knob 41 and the adjustment gear 42 to rotate at a fixed angle of 6 degrees, but the number of the first ball mounting grooves 111b2, the balls 43, and the second ball mounting grooves 421a is not limited thereto. Further, the first ball mounting groove 111b2 is a through slot, the support member 14 is provided with a first positioning post 142, and the first elastic member 44 is sleeved on the first positioning post 142 and abuts between the ball 43 and the support member 14. For example, the first ball mounting groove 111b2 is also a blind hole, and the first elastic element 44 is disposed in the first ball mounting groove 111b2 and abuts against the ball 43 and the first ball mounting groove 111b 2.
Referring to fig. 7, 15 and 17, in the embodiment, the tightness adjusting mechanism 100 further includes a fixing member 5, the connecting hole portion 111c is disposed on the rear housing 12 in a penetrating manner, the connecting hole portion 111c is connected to the communication port 111c2 of the installation cavity 13 in the vertical direction, a stepped hole 111c1 is disposed at the rear end of the connecting hole portion 111c, and the fixing member 5 is rotatably disposed in the stepped hole 111c1 and connected to the adjusting gear 42. Specifically, the fixing member 5 is stepped to match the stepped hole 111c1, and a stepped opening is also provided in the fixing member 5.
Referring to fig. 9, 10 and 12, in the present embodiment, the adjusting assembly 4 further includes a pressing member 45, a locking member 46, a moving member 47 and a second elastic member 48, a mounting hole 411 is formed on the knob 41 along a front-back direction thereof, a plurality of guide slots 412 are formed on an inner wall of the mounting hole 411 along a circumferential direction thereof, a first guide chute 413 and a second guide chute 414 are sequentially connected between rear ends of two adjacent guide slots 412, the first guide chute 413 is located behind the second guide chute 414, and a stepped portion 415 is formed between the first guide chute 413 and the second guide chute 414. The pressing member 45 and the locking member 46 are sequentially and movably arranged in the mounting hole 411 from front to back, a plurality of first guiding inclined teeth 451 are arranged at the rear end of the pressing member 45 along the circumferential direction, a plurality of first guiding keys 452 are convexly arranged on the outer periphery of the pressing member 45, a second guiding inclined tooth 461 opposite to the first guiding inclined teeth 451 is arranged at the front end of the locking member 46, a plurality of second guiding keys 462 are convexly arranged on the outer periphery of the locking member 46, the inclined direction of the first guiding inclined teeth 451 is opposite to the inclined tooth direction of the second guiding inclined teeth 461, the inclined tooth surface of the first guiding inclined teeth 451 is abutted against the inclined tooth surface of the second guiding inclined teeth 461, and the first guiding keys 452 and the second guiding keys 462 are respectively and movably inserted in the guiding grooves 412, the first guiding key 452 has a first inclined surface 452a, the second guiding key 462 has a second inclined surface 462a, and the first inclined surface 452a abuts against the second inclined surface 462 a. The movable element 47 penetrates the lock member 46 and is connected to the pressing member 45, external teeth 471 are provided on the outer peripheral side of the movable element 47, internal teeth 111b1 are provided on the inner wall of the gear mounting groove portion 111b, and both ends of the second elastic element 48 are respectively in contact with the space between the movable element 47 and the adjustment gear 42. The knob 41 is locked or unlocked by pressing a lower push piece 45 to move backward so that the external teeth 471 are engaged with or disengaged from the internal teeth 111b 1. Specifically, the external teeth 471 are evenly distributed on the outer peripheral side of the moving member 47, the number of the external teeth 471 is four each, and the plurality of internal teeth 111b1 are evenly distributed on the inner wall of the gear mounting groove portion 111b in the circumferential direction. However, the number of the outer teeth 471 is not limited thereto.
Referring to fig. 9, 10 and 12, when the knob 41 is locked, the pushing member 45 moves to push the locking member 46 and the moving member 47, so that the second guide key 462 exits the guide groove 412, then the locking member 46 rotates under the interaction between the first guide helical tooth 451 and the second guide helical tooth 461 and the elastic force of the second elastic member 48, so that the second guide key 462 moves to the step portion 415 along the first guide helical tooth 413 and is locked, and the moving member 47 moves to drive the external teeth 471 to engage with the internal teeth 111b1, so as to lock the knob 41. When the lock releasing knob 41 is released, the pushing locking member 46 and the moving member 47 are pushed by moving the pushing member 45 again, so that the second guiding key 462 is firstly released from the step portion 415, then the locking member 46 continues to rotate under the interaction of the first guiding helical tooth 451 and the second guiding helical tooth 461 and the elastic force of the second elastic member 48, so that the second guiding key 462 moves along the second guiding helical tooth 414 and enters the next guiding groove 412, and the moving member 47 moves and drives the external teeth 471 to be released from the internal teeth 111b1, so as to release the lock releasing knob 41.
Referring to fig. 13 and 14, in the present embodiment, the locking member 46 is provided with a second through hole 463, the moving member 47 is provided with a plug portion 472 in a protruding manner, and the plug portion 472 passes through the second through hole 463 and is connected to the pressing member 45. Furthermore, a positioning groove 472a is disposed on the insertion portion 472, a second positioning column 453 is disposed on the pressing member 45, and the positioning groove 472a is inserted and matched with the second positioning column 453. The second positioning posts 453 and the positioning grooves 472a are cross-shaped, but not limited thereto.
Referring to fig. 9 and 11, in the present embodiment, the moving member 47 is provided with a first positioning hole 473, and the adjusting gear 42 is provided with a second positioning hole 421b, specifically, the second positioning hole 421b is located on the gear fixing portion 421. One end of the second elastic member 48 is disposed in the first positioning hole 473, and the other end of the second elastic member 48 is disposed in the second positioning hole 421 b. Further, the second positioning hole 421b may be provided as a column for positioning the second elastic member 48.
Referring to fig. 11 and 14, in the present embodiment, a plurality of third positioning pillars 416 are disposed on the knob 41, a first threaded hole 416a is disposed on the third positioning pillars 416, a plurality of second threaded holes 421c corresponding to the third positioning pillars 416 are disposed on the gear fixing portion 421, the first threaded hole 416a and the second threaded hole 421c are connected by screws, and a third through hole 474 for the third positioning pillars 416 to pass through is disposed on the outer peripheral side of the moving member 47. The number of the third positioning posts 416, the first threaded holes 416a, the second threaded holes 421c, and the third through holes 474 is four, but not limited thereto.
With reference to fig. 1 to 17, the operation principle of the slack adjuster mechanism 100 of the present invention is as follows:
when the pressing piece 45 is not pressed, the knob 41 can be freely rotated. When the knob 41 is manually rotated, the pressing member 45 and the locking member 46 are driven to rotate together due to the restriction of the guide groove 412, and the moving member 47 rotates along with the rotation of the knob 41 due to the restriction of the third positioning column 416 and the positioning groove 472a and the restriction of the adjustment gear 42 due to the screw fixation. Since the gear body portion 422 of the adjustment gear 42 is extended into the first opening 21 of the first telescopic band 2 and the second opening 31 of the second telescopic band 3 to be engaged with the first rack 22 and the second rack 32, respectively, the contraction or release of the first telescopic band 2 and the second telescopic band 3 can be adjusted when the knob 41 is rotated. Because the influence of mechanisms such as ratchet wheels and ratchets is avoided, the noise is relatively small when the knob 41 is adjusted, and the use experience of a user is met. Since the ball 43 is constrained to the adjusting gear 42, the minimum angle of each rotation of the knob 41 is 6 °, and the moving member 47 and the knob 41 rotate synchronously, the external teeth 471 on the moving member 47 always correspond to the internal teeth 111b1 of the gear mounting groove 111b of the front housing 11, but at this time, the external teeth 471 and the internal teeth 111b1 are disengaged and do not affect each other.
When the first and second extensible belts 2 and 3 are adjusted to a proper position, in order to lock the first and second extensible belts 2 and 3, the pressing member 45 is pressed, the pressing member 45 pushes the locking member 46, the moving member 47 moves backward along the guide groove 412, the second elastic member 48 is compressed, when the second guide key 462 on the locking member 46 is disengaged from the guide groove 412 of the installation hole 411 of the knob 41, the locking member 46 is no longer restrained by the guide groove 412, and due to the interaction of the first guide helical tooth 451 and the second guide helical tooth 461, and the elastic force of the second elastic member 48, the locking member 46 is forced to rotate, and the second guide key 462 slides on the first guide helical groove 413, and when the locking member moves to the 415 formed by the first guide helical groove 413 and the second guide helical groove 414, the locking state is completed. Since the moving member 47 moves backward by a certain distance, the external teeth 471 and the internal teeth 111b1 in the gear mounting groove 111b are engaged with each other from the initial disengaged state, and the knob 41 cannot be rotated to achieve the locking requirement.
When it is desired to release the retractable belt assembly, the pressing member 45 is pressed, the pressing member 45 pushes the locking member 46 backward, so that the second guiding key 462 of the locking member 46 is disengaged from the stepped position, and then the interaction between the first guiding helical tooth 451 and the second guiding helical tooth 461 causes the locking member 46 to continue to rotate in the same direction, and at the same time, the second guiding key 462 slides on the second guiding helical groove 414, and finally the second guiding key 462 of the locking member 46 enters the next guiding groove 412 along the second guiding helical groove 414, and at this time, the position of the moving member 47 returns to the initial position. The external teeth 471 and the internal teeth 111b1 in the gear mounting groove 111b are again brought from the initial engagement state to the disengagement state, and the knob 41 is released by the free rotation adjustment.
In summary, the wearable device of the present invention has the tightness adjusting mechanism 100, the adjusting component 4 of the tightness adjusting mechanism 100 is provided with the first gear on the first elastic band 2, the second rack 32 is arranged on the second telescopic belt 3, the first rack 22 and the second rack 32 are arranged to be distributed up and down oppositely, then, the adjusting component 4 is engaged with the first rack 22 and the second rack 32, so that the first retractable belt 2 can be retracted into the first chute hole 122 and the second retractable belt 3 can be retracted into the second chute hole 123 by driving the adjusting component 4 to rotate, alternatively, the first extensible band 2 is moved to extend out of the first chute hole 122 and the second extensible band 3 is moved to extend out of the second chute hole 123, thereby adjust the elasticity of first telescopic band 2 and second telescopic band 3, but and one-hand operation, the elasticity adjustment easy operation, no ratchet mechanism has the characteristics that the noise is little.
The above disclosure is only a preferred embodiment of the present invention, and should not be taken as limiting the scope of the invention, so that the appended claims are intended to cover all such modifications and changes as fall within the true spirit of the invention.
Claims (10)
1. A tightness adjustment mechanism, comprising:
the device comprises a shell, a first slide way and a second slide way, wherein a slide way groove is formed in the shell, a first slide way hole communicated with the left end of the slide way groove is formed in the left side of the shell, and a second slide way hole communicated with the right end of the slide way groove is formed in the right side of the shell;
the right end of the first telescopic belt extends into the chute through the first chute hole, a first opening positioned in the chute is formed in the first telescopic belt, and a first rack is arranged on the upper inner wall of the first opening;
the left end of the second telescopic belt extends into the chute groove through the second chute hole, a second opening positioned in the chute groove is formed in the second telescopic belt, a second rack is arranged on the lower inner wall of the second opening, and the first rack and the second rack are distributed in a vertically opposite mode;
the adjusting part, the adjusting part rotationally set up in on the casing, just the one end of adjusting part penetrate to in the slide groove and respectively with first rack the second rack meshing, borrow by ordering about the adjusting part rotates, makes first telescopic band removes the indentation first slide is downthehole and the indentation is removed to the second telescopic band the second slide is downthehole, perhaps, makes first telescopic band removes to stretch out first slide hole and the second telescopic band removes to stretch out the second slide hole.
2. The tightness adjustment mechanism of claim 1, wherein the housing comprises a front shell and a rear shell, the front shell is connected to the rear shell and encloses a mounting cavity, the slide groove is formed on the rear shell and located in the mounting cavity, the first slide hole is formed on a left side of the rear shell, the second slide hole is formed on a right side of the rear shell, and the adjustment assembly is rotatably disposed on the front shell.
3. The slack adjustment mechanism of claim 2, wherein the housing further comprises a support member disposed within the mounting cavity and coupled to the rear housing, the support member covering the chute.
4. The tightness adjustment mechanism of claim 3, wherein said front housing defines a mounting slot in communication with said mounting cavity, said adjustment assembly being mounted within said mounting slot.
5. The tightness adjusting mechanism of claim 4, wherein the adjusting assembly comprises a knob and an adjusting gear, the knob is connected to the adjusting gear, the adjusting gear is rotatably disposed in the mounting groove and engaged between the first rack and the second rack, and the adjusting gear is driven to rotate by operating the knob to drive the first rack and the second rack to move.
6. The tightness adjustment mechanism of claim 5, wherein said adjustment gear includes a gear fixing portion and a gear body portion connected to one side of said gear fixing portion, the other side of said gear fixing portion being connected to said knob, said gear body portion being rotatably disposed in said mounting groove and engaged between said first rack and said second rack.
7. The tightness adjustment mechanism of claim 6, wherein said mounting groove includes a knob mounting groove portion, a gear mounting groove portion and a coupling hole portion formed to extend in sequence from a front side to a rear side of said front housing, said support member is provided with a first through hole, said coupling hole portion passes through said first through hole and communicates with said mounting cavity, said knob is disposed in said knob mounting groove portion, said gear fixing portion is disposed in said gear mounting groove portion, and said adjustment gear is rotatably disposed in said coupling hole portion.
8. The tightness adjusting mechanism of claim 7, wherein the adjusting assembly further comprises a ball and a first elastic member, wherein a bottom surface of the gear mounting groove portion is provided with a plurality of first ball mounting grooves distributed around the connecting hole portion, the first elastic member is disposed in the first ball mounting grooves, the gear fixing portion is provided with a plurality of second ball mounting grooves along a circumferential direction thereof, one end of the ball is disposed in the first ball mounting groove and abuts against the first elastic member, and the other end of the ball is engaged in one of the second ball mounting grooves; the adjusting gear rotates, so that the ball is clamped with different second ball mounting grooves under the action of the first elastic piece.
9. The tightness adjusting mechanism according to claim 7, wherein the adjusting assembly further comprises a pressing member, a locking member, a moving member and a second elastic member, the knob is provided with a mounting hole along a front-rear direction thereof, the inner wall of the mounting hole is provided with a plurality of guide grooves along a circumferential direction thereof, a first guide chute and a second guide chute are sequentially connected between rear ends of two adjacent guide grooves, the first guide chute is located behind the second guide chute, and a step portion is formed between the first guide chute and the second guide chute;
the pressing piece and the locking piece are movably arranged in the mounting hole in sequence from front to back, the rear end of the pressing piece is provided with a plurality of first guide helical teeth along the circumferential direction, the peripheral side of the pressing piece is convexly provided with a plurality of first guide keys, the front end of the locking piece is provided with second guide helical teeth opposite to the first guide helical teeth, the periphery of the locking piece is convexly provided with a plurality of second guide keys, the oblique groove direction of the first guide oblique tooth is opposite to the oblique tooth direction of the second guide oblique tooth, the oblique tooth surface of the first guide oblique tooth is abutted with the oblique tooth surface of the second guide oblique tooth, the first guide key and the second guide key are respectively movably inserted in the guide grooves, the first guide key is provided with a first inclined surface, the second guide key is provided with a second inclined surface, and the first inclined surface is abutted to the second inclined surface;
the movable piece penetrates through the locking piece and is connected with the pressing piece, external teeth are arranged on the outer peripheral side of the movable piece, internal teeth are arranged on the inner wall of the gear installation groove part, and two ends of the second elastic piece are respectively abutted between the movable piece and the adjusting gear;
the knob is locked or unlocked by pressing the pressing piece to move backwards so that the outer teeth are meshed with or separated from the inner teeth.
10. A wearable device, comprising a device body and the slack adjuster mechanism according to any one of claims 1 to 9, wherein the left end of the first elastic band and the right end of the second elastic band are respectively connected to both sides of the device body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111681039.0A CN114217443A (en) | 2021-12-31 | 2021-12-31 | Tightness adjusting mechanism and wearable equipment with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111681039.0A CN114217443A (en) | 2021-12-31 | 2021-12-31 | Tightness adjusting mechanism and wearable equipment with same |
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| Publication Number | Publication Date |
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| CN114217443A true CN114217443A (en) | 2022-03-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111681039.0A Pending CN114217443A (en) | 2021-12-31 | 2021-12-31 | Tightness adjusting mechanism and wearable equipment with same |
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| CN116449575A (en) * | 2023-06-16 | 2023-07-18 | 上海鱼微阿科技有限公司 | Head-mounted device |
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