CN208477215U - A kind of band body slack adjuster and helmet - Google Patents

Abstract

The utility model discloses a kind of helmet for belonging to wearable device technical field and with body slack adjuster, including shell, gear and regulating wheel.Wherein, gear is installed in shell, for engaging with the rack gear on body；Regulating wheel is installed on shell, and elastomer is provided between regulating wheel and gear；Under natural conditions, gear and shell locking；External force rotate regulating wheel when, regulating wheel can opposed gear rotation, gear is unlocked, deformation occurs for elastomer, regulating wheel opposed gear turn an angle pusher moving gear synchronous rotation.This passes through the cooperation of shell, gear and regulating wheel with body slack adjuster, can conveniently realize the elastic adjusting with body, and then for the equipment by wearing with body, can adjust clamping force easily to meet the use demand of different user.

Description

A kind of band body slack adjuster and helmet

Technical field

The utility model relates to wearable device technical field, more specifically to a kind of band body slack adjuster, Further relate to a kind of helmet with the regulating device.

Background technique

It is more and more appeared in the Working Life of people by the equipment worn with body, as VR (virtual reality) is worn Equipment.Wear be VR equipment chief component, for HMD (head-mounted display) to be fixed on head, to entire VR product Experience play an important role.At present mainstream wear set wear form mainly and have head-hoop, bandage type, head clip.Bandage type head Wear at low cost, but Product Experience is poor, gives cheap sense, and when wearing is easy winding hair, and adjusts to head clamping force Process compares low side, cumbersome.Head clip wears product and wears clamping force depending on wearer's head circumference size to wearer, presss from both sides in this way It will lead to collet when clamp force is excessive, will lead to product when too small and be not fixed firmly and lean on.

It is asked in conclusion how to efficiently solve helmet etc. and be difficult to adjust etc. by the equipment clamping force worn with body Topic, is current those skilled in the art's problem to be solved.

Utility model content

In view of this, first of the utility model is designed to provide a kind of band body slack adjuster, the band body pine The structure design of tight regulating device, which can be efficiently solved, is difficult to the problem of adjusting, this reality by the equipment clamping force worn with body It is to provide with second novel purpose a kind of including the above-mentioned helmet with body slack adjuster.

In order to reach above-mentioned first purpose, the utility model is provided the following technical solutions:

A kind of band body slack adjuster, including shell, the regulating wheel being installed on the shell and gear, the gear For being engaged with the rack gear on body；Elastomer is provided between the regulating wheel and the gear；Under natural conditions, the gear It is locked with the shell；The regulating wheel can be rotated and be unlocked the gear, the elasticity relative to the gear when rotating Deformation occurs for body, the regulating wheel relative to the gear turn an angle after push the gear synchronous to rotate.

Preferably, in above-mentioned band body slack adjuster, there is internal tooth on the shell, be slidably fitted on the gear Locking member, the regulating wheel have the protrusion cooperated with the locking member；Under natural conditions, the protrusion will be described Locking member ejection and the interior tooth engagement；The regulating wheel can rotate when rotating relative to the gear, so that the protrusion Portion and the locking member are staggered to discharge the locking member, and deformation occurs for the elastomer, and the regulating wheel is relatively described Gear pushes the gear synchronous to rotate after turning an angle.

Preferably, in above-mentioned band body slack adjuster, the gear is circumferentially arranged at least two limiting sections, described Regulating wheel have pushing part, under natural conditions the pushing part between the opposite limiting section, and the pushing part away from There is gap between the limiting section at both ends；

Alternatively, the regulating wheel is circumferentially arranged there are at least two pushing parts, there is limiting section, natural shape on the gear Between the limiting section is between two pushing parts under state, and the limiting section has between the pushing part at both ends Gap.

Preferably, in above-mentioned band body slack adjuster, the locking member is slidably mounted in the limiting section.

Preferably, in above-mentioned band body slack adjuster, multiple limits have been uniformly arranged in the circumferential direction on the gear Portion is respectively arranged with the pushing part between the limiting section of adjacent two.

Preferably, in above-mentioned band body slack adjuster, multiple locking members, Duo Gesuo are provided on the gear State locking member being arranged circumferentially along the gear, in the regulating wheel with each locking member is opposite is respectively set There is the protrusion.

Preferably, in above-mentioned band body slack adjuster, the center of the gear has a pilot hole, in the regulating wheel The heart has the connecting column for being inserted into the pilot hole, and the protrusion is radially protruded by the outer wall of the connecting column to be formed.

Preferably, in above-mentioned band body slack adjuster, the pilot hole is through-hole, and the connecting column passes through the assembly Hole, and clamp is provided on one of the end of the connecting column and the Both, be correspondingly arranged in another one with it is described The card slot of clamp cooperation.

Preferably, in above-mentioned band body slack adjuster, the elastomer be torsional spring, the both ends of the torsional spring respectively with The gear and the regulating wheel offset so that the regulating wheel relatively the gear positive and negative rotation when compress the torsional spring.

Preferably, in above-mentioned band body slack adjuster, compression bullet is provided between the locking member and the gear Property part, to push the locking member and the interior tooth engagement.

Band body slack adjuster provided by the utility model includes shell, gear and regulating wheel.Wherein, gear is installed on In shell, for being engaged with the rack gear on body；Regulating wheel is installed on shell, and elastomer is provided between regulating wheel and gear； Under natural conditions, gear and shell locking；External force rotate regulating wheel when, regulating wheel can opposed gear rotation, gear is unlocked, Deformation occurs for elastomer, regulating wheel opposed gear turn an angle pusher moving gear synchronous rotation.

Using band body slack adjuster provided by the utility model, when needing to adjust elastic with body, external force overcomes bullet Property body elastic force rotate regulating wheel, regulating wheel first opposed gear rotate, the locking relation of lifting gear and shell.Regulating wheel phase To the elastomer in gear rotation process, being set between regulating wheel and gear, deformation occurs, after regulating wheel turns an angle, Continuing to rotate for regulating wheel will drive gear synchronous rotation, and the rotation of gear drives the rack gear being engaged with to move forward or back, into And change with the elastic of body.After band body is adjusted in place, regulating wheel is discharged, the restoring force of elastomer pushes regulating wheel to reset, tooth Wheel is lock on shell, will be fixed on corresponding position with body.To sum up, which passes through shell, gear and tune The cooperation for saving wheel, can conveniently realize the elastic adjusting with body, and then for the equipment by wearing with body, Neng Goufang Just adjusting clamping force is to meet the use demand of different user.

In order to reach above-mentioned second purpose, the utility model additionally provides a kind of helmet, which includes Band body and any of the above-described kind of band body slack adjuster, with having rack gear on body, rack and pinion is engaged.Due to above-mentioned band body Slack adjuster has above-mentioned technique effect, and there is the helmet with body slack adjuster should also have corresponding skill Art effect.

Detailed description of the invention

In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor Under, it is also possible to obtain other drawings based on these drawings.

Fig. 1 is the configuration schematic diagram with body slack adjuster of one specific embodiment of the utility model；

Fig. 2 is the schematic diagram of the section structure shown in FIG. 1 with body slack adjuster；

Fig. 3 is that wheel and rack cooperates schematic diagram；

Fig. 4 is that schematic diagram is arranged in elastomer；

Fig. 5 is the assembling schematic diagram of gear and locking member；

Fig. 6 is the floor map of gear；

Fig. 7 is the structural schematic diagram of regulating wheel.

It is marked in attached drawing as follows:

Shell 1, shell 11, inner casing 12, internal tooth 13, gear 2, external tooth 21, clamp 22, limiting section 23, regulating wheel 3, protrusion Portion 31, pushing part 32, the first support portion 33, the second support portion 34, locking member 4, elastomer 5, first end 51, second end 52, Compression elastic piece 6, band body 7, rack gear 71.

Specific embodiment

The utility model embodiment discloses a kind of band body slack adjuster, in order to adjust with the elastic of body, meets Different client's use demands.

The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work Every other embodiment obtained, fall within the protection scope of the utility model.

Fig. 1-Fig. 2 is please referred to, Fig. 1 is the explosion knot with body slack adjuster of one specific embodiment of the utility model Structure schematic diagram；Fig. 2 is the schematic diagram of the section structure shown in FIG. 1 with body slack adjuster.

In a specific embodiment, band body slack adjuster provided by the utility model includes shell 1,2 and of gear Regulating wheel 3.

Wherein, gear 2 and regulating wheel 3 are installed on shell 1.The specific structure of shell 1 can be set as needed, herein not Make specific limit.When with the band body 7 that body 7 is helmet, then the shell that shell 1 is worn after being preferably, for the ease of shell 1 With being coupled with body 7, shell 1 includes the inner casing 12 and shell 11 for being detachably fixed connection, then in one end insertion with body 7 Between shell 12 and shell 11.

Gear 2 with the rack gear 71 on body 7 for engaging, as shown in figure 3, Fig. 3 is that gear 2 and the cooperation of rack gear 71 are illustrated Figure.There is external tooth 21 on gear 2, engaged with the rack gear 71 with body 7, so that the rotation of gear 2 will drive the back-and-forth motion of rack gear 71, To adjust with the elastic of body 7.Be specifically as follows one end with body 7 to be fixedly connected with shell 1, on the other end have rack gear 71 and with Gear 2 engages, and then the rotation band carry-over bar 71 of gear 2 is mobile, degree of the enclosing size surrounded with body 7 is adjusted, to adapt to different use Family.Alternatively, the both ends with body 7 can also be engaged with gear 2, i.e., the both ends with body 7 are movable end, not with shell 1 It is fixedly connected, can specifically penetrate at the both ends with body 7 in shell 1, to be engaged with gear 2.And then the rotation of gear 2 drives band body The rack gear 71 at 7 both ends moves respectively so that the both ends with body 7 are accordingly adjusted towards or away from movement with degree of the enclosing size that body 7 surrounds It is whole to adapt to different users.

Regulating wheel 3 specifically can be removably rotatablely connected with shell 1, in order to the installation and later maintenance of gear 2.It adjusts Elastomer 5 is provided between section wheel 3 and gear 2.Regulating wheel 3 and gear 2 cooperate, and under natural conditions, gear 2 and shell 1 are locked.Outside When power rotates regulating wheel 3 forward or backwards, 3 opposed gear 2 of regulating wheel first rotates forward or backwards, and the unlock of gear 2 is made it It can be with respect to housing into rotation.When 3 opposed gear 2 of regulating wheel turn an angle forward or backwards pusher moving gear 2 rotate synchronously. It should be noted that, be not especially limited herein and the size of certain angle that is mentioned below can be set as needed.Regulating wheel 3 rotating forward certain angle pusher moving gears 2 are rotated synchronously pushes gear 2 to rotate synchronously corresponding angular dimension with reversion certain angle It can be the same or different.

Elastomer 5 is provided between regulating wheel 3 and gear 2, elastomer 5 deforms when 3 opposed gear 2 of regulating wheel rotates, in turn When regulating wheel 3 is released, the effect of the restoring force of elastomer 5 pushes regulating wheel 3 to reset, that is, make regulating wheel 3 return back to The initial relative position of gear 2, and keep regulating wheel 3 in the position when not by external force, i.e., gear 2 is lock on shell 1.

Using band body slack adjuster provided by the utility model, when needing to adjust elastic with body, external force overcomes bullet Property body 5 elastic force rotate regulating wheel 3, regulating wheel 3 first opposed gear 2 rotate, the locking relation of lifting gear 2 and shell 1.It adjusts In section wheel 3 opposed gear, 2 rotation process, deformation occurs for the elastomer 5 for being set between regulating wheel 3 and gear 2, when 3 turns of regulating wheel After dynamic certain angle, continuing to rotate for regulating wheel 3 will drive the synchronous rotation of gear 2, and the rotation of gear 2 drives the tooth being engaged with Item 71 moves forward or back, and then changes with the elastic of body.After band body is adjusted in place, regulating wheel 3, the reply of elastomer 5 are discharged It pushes dynamic regulating wheel 3 to reset, gear 2 is lock on shell 1, will be fixed on corresponding position with body.To sum up, the elastic adjusting of band body Device passes through the cooperation of shell 1, gear 2 and regulating wheel 3, can conveniently realize the elastic adjusting with body, and then for passing through For the equipment worn with body, clamping force can be adjusted easily to meet the use demand of different user.

Further, there is internal tooth 13 on shell 1, mounting hole can be specifically opened up on shell 1, inner wall has internal tooth 13, mounting hole is generally circular hole, and gear 2 is installed in mounting hole.It should be noted that internal tooth 13 herein refers on shell, tool There are multiple grooves on the inner wall of body such as mounting hole, then form tooth between adjacent groove.The number of specific tooth, size and adjacent Spacing between tooth can be set as needed, and be not especially limited herein.

Locking member 4 is slidably fitted on gear 2.Since locking member 4 is installed on gear 2, and being capable of opposed gear 2 Sliding, and then can be engaged with the internal tooth 13 on shell 1 when it is ejected, so that the position of gear 2 be locked.When it is along back After direction sliding abjection internal tooth 13 from internal tooth 13, then the locking to gear 2 is relieved.The top of locking member 4 is in and internal tooth The tip-angled shape of 13 shapes cooperation, as thimble.

Regulating wheel 3 has the protrusion 31 cooperated with locking member 4, under natural conditions, protrusion 31 and 4 phase of locking member It supports, is ejected and engaged with internal tooth 13.When external force rotates regulating wheel 3,3 opposed gear 2 of regulating wheel is rotated first, then regulating wheel 3 protrusion 31 rotates, so that protrusion 31 is staggered with locking member 4, leaving space for locking member 4 can be slided To exiting internal tooth 13.

Locking member 4 is pushed for the ease of protrusion 31, the width of protrusion 31 is gradually increased by top to bottom, and two Side is inclined surface, and locking member 4 is corresponding with the end that protrusion 31 offsets to be set as from center to two sides and protrusion 31 Inclined surface cooperation inclined surface.When regulating wheel 3 resets under the action of elastomer 5 in turn, the effect for passing through inclined surface is pushed Locking member 4 is ejected.

By the cooperation of the locking member 4 of above structure and internal tooth 13, when needing to adjust elastic with body 7, external force overcomes The elastic force of elastomer 5 rotates regulating wheel 3, and the opposed gear 2 first of regulating wheel 3 rotates, so that protrusion 31 and 4 phase of locking member Mistake, locking member 4 are released, and can exit the internal tooth 13 on shell 1, that is, relieve the locking of gear 2 Yu shell 1 Relationship.In 3 opposed gear of regulating wheel, 2 rotation process, deformation occurs for the elastomer 5 for being set between regulating wheel 3 and gear 2, works as tune After section 3 opposed gears 2 of wheel turn an angle, continuing to rotate for regulating wheel 3 will drive the synchronous rotation of gear 2, the rotation of gear 2 It drives the rack gear 71 being engaged with to move forward or back, and then changes with the elastic of body 7.After band body 7 is adjusted in place, release is adjusted Wheel 3, the restoring force of elastomer 5 push regulating wheel 3 to reset so that protrusion 31 offset with locking member 4 with ejected with it is interior Tooth 13 engages, and realization is self-locking, will be fixed on corresponding position with body 7.

Specifically, gear 2 is arranged at intervals at least two limiting sections 23 in the circumferential, regulating wheel 3 has positioned at opposite Pushing part 32 between limiting section 23, and the length of pushing part 32 is less than pre-determined distance.Namely in its natural state, pushing part 32 between two limiting sections 23, and two limiting sections 23 of distance have gap.Alternatively, regulating wheel 3 is circumferentially arranged to be had at least Two pushing parts 32 have limiting section 23 on gear 2, and limiting section 23 is positioned at two pushing parts 32 between under natural conditions, and limit There is gap in portion 23 between the pushing part 32 apart from both ends.

And then external force is when rotating clockwise or counterclockwise regulating wheel 3, first can opposed gear 2 rotate, pushed when turning to After portion 32 and limiting section 23 offset, then regulating wheel 3, which continues to rotate, will push the synchronous rotation of gear 2.Specific pushing part 32 is apart from limit Spacing size between position portion 23 can be set as needed, and need to guarantee that regulating wheel 3 and gear 2 relatively rotate in the spacing range It is enough for protrusion 31 and locking member 4 to be staggered.Specific limiting section 23 and pushing part 32 all can be boss, for the ease of pushing away The setting in dynamic portion 32, can be arc boss.

For the ease of the setting of limiting section 23, gear 2 may include being located remotely from the gear of 3 side of regulating wheel and leaning on The auxiliary section of nearly 3 side of regulating wheel, specific auxiliary section can be cylindrical, and limiting section 23 is fixed on the outside wall surface of auxiliary section.With On illustrate that the first rotation of opposed gear 2 of regulating wheel 3 is enable then to push gear 2 synchronous again by limiting section 23 and pushing part 32 Rotation can also realize above-mentioned function by other drive mechanisms as needed.

By the cooperation of limiting section 23 and pushing part 32, when so that external force rotating regulating wheel 3, regulating wheel 3 can be first opposite Gear 2 rotate, when 3 opposed gear 2 of regulating wheel turn an angle pusher moving gear 2 rotate synchronously.As needed, may be used not Limiting section 23 and pushing part 32 are set, then when external force rotation regulating wheel 3, the first opposed gear 2 of regulating wheel 3 is rotated, when 3 phase of regulating wheel When turning to elastomer 5 to gear 2 and reaching deformation limit, then regulating wheel 3 is able to drive the synchronous rotation of gear 2.

Further, locking member 4 is slidably mounted in limiting section 23.Specifically through-hole can be opened up on limiting section 23, Locking member 4 is installed in the through-hole, and under natural conditions, the bottom end of protrusion 31 and locking member 4, which offsets, to be ejected.It will lock Tight component 4 is installed in limiting section 23, space is utilized, preferably convenient for the volume of effective controling adjustment device.Locking member 4 One can be only arranged, i.e., the installation locking component 4 in a limiting section 23.It as needed, can also be in each limiting section 23 It is respectively mounted locking member 4, engages the locking for realizing gear 2 with internal tooth 13 by multiple locking members 4, reliability is higher.Meanwhile Multiple spot stress is but also stress more balances.

Further, it has been uniformly arranged in the circumferential direction multiple limiting sections 23 on gear 2, has divided between two adjacent limiting sections 23 It is not provided with pushing part 32.It should be noted that three and three, multiple fingers herein or more.As shown in Fig. 2, edge on gear 2 It is circumferentially uniformly arranged there are three limiting section 23, it is corresponding in regulating wheel 3 to be uniformly arranged in the circumferential direction that there are three pushing parts 32, it is located at Between two adjacent limiting sections 23.And then when regulating wheel 3 turns to pushing part 32 and limiting section 23 offsets, three pushing parts 32 Collective effect pushes gear 2 to rotate, and three stress points are uniformly distributed so that the rotation of gear 2 is more steady.Certainly, as needed Can also only opposite two limiting sections 23 of setting, or be uniformly arranged four and the above limiting section 23.

In the above embodiments, multiple locking members 4, week of multiple locking members 4 along gear 2 are provided on gear 2 It is opposite with each locking member 4 in regulating wheel 3 to be respectively arranged with protrusion 31 to being evenly arranged.It should be noted that herein It is multiple multiple locking members 4 are namely uniformly installed in the circumferential direction of gear 2, and be uniformly arranged in the circumferential direction in regulating wheel 3 There is the protrusion 31 of corresponding number, under natural conditions, each protrusion 31, which offsets with each locking member 4, to be ejected and internal tooth 13 Engagement, Multipoint Uniform stress make overall structure reliability more preferably.It, then can be with when locking member 4 is installed on limiting section 23 Installation locking component 4 is distinguished on each limiting section 23.

For the ease of the assembly of gear 2 and regulating wheel 3, the center of gear 2 has pilot hole, and the center of regulating wheel 3 has The connecting column in plugging in fitting hole, protrusion 31 is radially protruded by the outer wall of connecting column to be formed.The namely company of regulating wheel 3 In the pilot hole for connecing column insertion gear 2, the outer wall of connecting column outwardly protrudes to form protrusion 31, and protrusion 31 is radially convex Out.Such setting takes full advantage of space, simple and compact for structure, when regulating wheel 3 rotates, the rotation of protrusion 31 and locking member 4 It is staggered.

Preferably, locking member 4 is radially slidably mounted on gear 2, and then protrusion 31 radially pushes tight lock part Part 4 is ejected, and stress is more steady.As needed, locking member 4 can also relatively radially tilt installation.

Further, pilot hole is through-hole, and connecting column passes through pilot hole, and 1 alternative one of the end of connecting column and shell On be provided with clamp 22, be correspondingly arranged in another one with clamp 22 cooperate card slot.Since connecting column is located in regulating wheel 3 The heart, that is, be clamped by the center of regulating wheel 3 and shell 1, so that overall structure is more reliable.Adjusting can also specifically be passed through The outer wall and shell 1 of wheel 3 are clamped.The structure of specific clamp 22 and card slot is correspondingly arranged, and is not especially limited herein.

In the above embodiments, elastomer 5 is torsional spring, and the both ends of torsional spring offset with gear 2 and regulating wheel 3 respectively, So as to compress torsional spring when 32 positive and negative rotation of opposed gear of regulating wheel.Referring specifically to Fig. 4,6 and 7, Fig. 4 is that the setting of elastomer 5 is shown It is intended to；Fig. 6 is the floor map of gear 2；Fig. 7 is the structural schematic diagram of regulating wheel 3.The both ends of torsional spring are denoted as first respectively 51 and second end 52 are held, torsional spring is corresponded in regulating wheel 3 and is provided with the first support portion 33 and the second support portion 34, the first end of torsional spring 51 offset with the first support portion 33, and second end 52 offsets with the second support portion 34, while first end 51 and second end 52 are and tooth Wheel 2 offsets, and gear 2 and regulating wheel 3 are connected to the ipsilateral of torsional spring at first end 51 and second end 52.

When 3 opposed gear 2 of regulating wheel rotates clockwise, the first support portion 33 pushes the first end 51 of torsional spring clockwise Movement, the second support portion 34 is then since the supporting role of gear 2 is remain stationary, thus torsional spring is compressed, and then in 3 quilt of regulating wheel The restoring force of its reset is provided when release.When 3 opposed gear 2 of regulating wheel rotates counterclockwise, the second support portion 34 pushes torsional spring 52 counterclockwise movement of second end, the first support portion 33 is then since the supporting role of gear 2 is remain stationary, thus torsional spring is pressed Contracting, and then the restoring force of its reset is provided when regulating wheel 3 is released.By the effect of torsional spring, it can guarantee that regulating wheel 3 exists Protrusion 31 and locking member 4, which offset, under natural conditions is ejected locking member 4 and locking.

Specifically, in the case where being provided at least two pushing part 32, then the first support portion 33 and the second support portion 34 It can be set on pushing part 32, overall structure is more compact.As needed, first independently of pushing part 32 also can be set Support portion 33 and the second support portion 34.

As needed, torsional spring can also be respectively set corresponding to the positive and negative rotation of regulating wheel 3, two torsional springs is such as set, it is each The both ends of torsional spring offset with regulating wheel 3 and gear 2 respectively, or can also directly by the both ends of each torsional spring respectively with gear 2 and Regulating wheel 3 is fixedly connected, and then when 3 opposed gear 2 of regulating wheel rotates can make torsional spring deformation occurs, to provide the reset of regulating wheel 3 Restoring force.

As needed, damping rubber can also be set between regulating wheel 3 and gear 2, when 3 opposed gear 2 of regulating wheel rotates When can make damping rubber deformation occurs to be also easy to produce damping force, and then the restoring force of its reset is provided when regulating wheel 3 is released.

On the basis of the various embodiments described above, compression elastic piece 6 is provided between locking member 4 and gear 2, to push Locking member 4 is engaged with internal tooth 13.Referring to FIG. 5, Fig. 5 is the assembling schematic diagram of gear 2 and locking member 4.By locking Compression elastic piece 6 is set between component 4 and gear 2, and under natural conditions, protrusion 31 ejects locking member 4 same regulating wheel 3 When, the elastic force of compression elastic piece 6 pushes locking member 4 to be ejected, and the two collective effect is to guarantee the reliability of locking.And work as For external force when regulating wheel 3 rotates its opposed gear 2, external force need to overcome the resistance of elastomer 5, to rotate regulating wheel 3, Protrusion 31 and locking member 4 are staggered to discharge locking member 4 during this, can be pressed simultaneously by deviating from internal tooth 13 The effect of contracting elastic component 6 ejects locking member 4.When regulating wheel 3, which is turned to, to offset with gear 2, regulating wheel 3 continues to rotate band Moving gear 2 rotates synchronously, and can move up and down with 13 shape of internal tooth in rotation process locking member 4, in the work of compression elastic piece 6 With lower sending " click click " sound, to promote user experience.Certainly, in order to enable regulating wheel 3 to push away when rotating clockwise or counterclockwise Dynamic locking member 4 overcomes the elastic force of compression elastic piece 6 to exit internal tooth 13, and it is in incline that the tooth form of internal tooth 13, which is specifically as follows the flank of tooth, Tiltedly.

Specifically, radially offering stepped hole on gear 2, and stepped hole is located at the aperture in the level-one hole in outside greater than position In the aperture of the second hole of inside, the top of locking member 4 has a trunnion, and trunnion card resistance is in level-one hole, trunnion and stepped hole Step surface between be provided with compression elastic piece 6.By above structure, convenient for the setting of compression elastic piece 6.

The band body slack adjuster provided in based on the above embodiment, the utility model, which additionally provides one kind, to be worn and sets Standby, which includes any one band body slack adjuster in band body 7 and above-described embodiment, has rack gear on band body 7 71, rack gear 71 is engaged with gear 2.Since the helmet uses the band body slack adjuster in above-described embodiment, so The beneficial effect of the helmet please refers to above-described embodiment.

Specifically, one end with body 7 is fixedly connected with shell 1, there is rack gear 71 on the other end and engaged with gear 2, into And the rotation band carry-over bar 71 of gear 2 is mobile, adjusts degree of the enclosing size surrounded with body 7, to adapt to different users.Alternatively, can also To engage at the both ends with body 7 with gear 2, i.e., the both ends with body 7 are movable end, are not fixedly connected with shell 1, specifically Both ends with body 7 can be penetrated in shell 1, to be engaged with gear 2.And then the rotation of gear 2 drives the rack gear 71 with 7 both ends of body It is moved respectively so that the both ends with body 7 are towards or away from movement.It as needed, also may include two band bodies 7, respectively with body 7 One end is connect with the main body of helmet, and the other end is engaged with gear 2 respectively, can specifically be corresponded to each band body 7 and is respectively set Above-mentioned band body slack adjuster can also be by two band bodies 7 and same band body pine to adjust each action length with body 7 respectively The gear 2 of tight regulating device engages, with synchronous adjustment.

Each embodiment in this specification is described in a progressive manner, the highlights of each of the examples are with other The difference of embodiment, the same or similar parts in each embodiment may refer to each other.

The foregoing description of the disclosed embodiments can be realized professional and technical personnel in the field or using originally practical new Type.Various modifications to these embodiments will be readily apparent to those skilled in the art, and determine herein The General Principle of justice can be realized in other embodiments without departing from the spirit or scope of the present utility model.Cause This, the present invention will not be limited to the embodiments shown herein, and is to fit to and principles disclosed herein The widest scope consistent with features of novelty.

Claims (11)

1. a kind of band body slack adjuster, which is characterized in that including shell (1), the regulating wheel being installed on the shell (1) With gear (2), the gear (2) with the rack gear (71) on body (7) for engaging；The regulating wheel (3) and the gear (2) Between be provided with elastomer (5)；Under natural conditions, the gear (2) and the shell (1) are locked；When the regulating wheel (3) rotates It can be rotated relative to the gear (2) and unlock the gear (2), deformation occurs for the elastomer (5), the regulating wheel (3) the relatively described gear (2) pushes the gear (2) to rotate synchronously after turning an angle.

2. band body slack adjuster according to claim 1, which is characterized in that have internal tooth on the shell (1) (13), it is slidably fitted with locking member (4) on the gear (2), the regulating wheel (3) has matches with the locking member (4) The protrusion (31) of conjunction；Under natural conditions, the locking member (4) are ejected and are nibbled with the internal tooth (13) by the protrusion (31) It closes；The regulating wheel (3) can rotate when rotating relative to the gear (2), so that the protrusion (31) and the tight lock part Part (4) is staggered to discharge the locking member (4), and deformation occurs for the elastomer (5), the relatively described tooth of regulating wheel (3) Wheel (2) pushes the gear (2) to rotate synchronously after turning an angle.

3. band body slack adjuster according to claim 2, which is characterized in that the gear (2) is circumferentially arranged to be had At least two limiting sections (23), the regulating wheel (3) have pushing part (32), and the pushing part (32) is located at two under natural conditions Between the limiting section (23), and there is gap between the described limiting section (23) of the pushing part (32) apart from both ends；

Alternatively, the regulating wheel (3) is circumferentially arranged to be had at least two pushing parts (32), there is limiting section on the gear (2) (23), the limiting section (23) is between two pushing parts (32) under natural conditions, and the limiting section (23) distance two There is gap between the pushing part (32) at end.

4. band body slack adjuster according to claim 3, which is characterized in that the locking member (4) is slidably installed In the limiting section (23).

5. band body slack adjuster according to claim 4, which is characterized in that on the gear (2) circumferentially uniformly Multiple limiting sections (23) are provided with, are respectively arranged with the pushing part (32) between the limiting section of adjacent two (23).

6. band body slack adjuster according to claim 2, which is characterized in that be provided on the gear (2) multiple The locking member (4), multiple locking member (4) being arranged circumferentially along the gear (2), the regulating wheel (3) Upper and opposite each locking member (4) is respectively arranged with the protrusion (31).

7. band body slack adjuster according to claim 2, which is characterized in that the center of the gear (2) has dress Distribution, the center of the regulating wheel (3) have the connecting column for being inserted into the pilot hole, and the protrusion (31) is by the connecting column Outer wall radially protrude to be formed.

8. band body slack adjuster according to claim 7, which is characterized in that the pilot hole is through-hole, the company Column is connect across the pilot hole, and is provided with clamp (22) in the end of the connecting column and the shell (1) alternative one, separately The card slot with the clamp (22) cooperation is correspondingly arranged in one.

9. band body slack adjuster according to claim 1, which is characterized in that the elastomer (5) is torsional spring, described The both ends of torsional spring offset with the gear (2) and the regulating wheel (3) respectively, so that the relatively described tooth of the regulating wheel (3) The torsional spring is compressed when taking turns (2) positive and negative rotation.

10. according to the described in any item band body slack adjusters of claim 2-8, which is characterized in that the locking member (4) Compression elastic piece (6) are provided with, between the gear (2) to push the locking member (4) to engage with the internal tooth (13).

11. a kind of helmet, including band body (7), there are rack gear (71) on the band body (7), which is characterized in that further include as The described in any item band body slack adjusters of claim 1-10, the rack gear (71) are engaged with the gear (2).