WO2012071802A1 - 调节式头盔及头部按摩器 - Google Patents

调节式头盔及头部按摩器 Download PDF

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Publication number
WO2012071802A1
WO2012071802A1 PCT/CN2011/070861 CN2011070861W WO2012071802A1 WO 2012071802 A1 WO2012071802 A1 WO 2012071802A1 CN 2011070861 W CN2011070861 W CN 2011070861W WO 2012071802 A1 WO2012071802 A1 WO 2012071802A1
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WO
WIPO (PCT)
Prior art keywords
ratchet
casing
housing
weft
adjustable helmet
Prior art date
Application number
PCT/CN2011/070861
Other languages
English (en)
French (fr)
Inventor
马学军
万勇
Original Assignee
深圳市轻松科技股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 深圳市轻松科技股份有限公司 filed Critical 深圳市轻松科技股份有限公司
Priority to US13/522,406 priority Critical patent/US9380824B2/en
Publication of WO2012071802A1 publication Critical patent/WO2012071802A1/zh

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Classifications

    • A—HUMAN NECESSITIES
    • A42—HEADWEAR
    • A42B—HATS; HEAD COVERINGS
    • A42B3/00—Helmets; Helmet covers ; Other protective head coverings
    • A42B3/04—Parts, details or accessories of helmets
    • A42B3/10—Linings
    • A42B3/14—Suspension devices
    • A42B3/145—Size adjustment devices
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61H—PHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY
    • A61H7/00—Devices for suction-kneading massage; Devices for massaging the skin by rubbing or brushing not otherwise provided for
    • A61H7/006—Helmets for head-massage

Definitions

  • the utility model relates to the technical field of health massage instruments, and more particularly to an adjustable helmet and a head massager.
  • the head massager is used to massage the user's head, which generally includes a helmet and a massage device.
  • the helmet is worn on the user's head, and the massage device is disposed on the helmet and used to massage the user's head.
  • the helmet is generally adjustable.
  • the adjustable helmet comprises a warp direction housing and a weft direction housing, wherein the warp direction housing and the weft direction housing are provided with an adjustable length adjustment device, but the existing adjustment device has only a single
  • the locking structure that is, the warp casing and the weft casing are opened and fixed, and then locked in the telescopic direction, the helmet can no longer be reduced, but is not fixed in the extending direction, the warp casing and the weft casing It can continue to stretch, and this one-way locking helmet is also inconvenient in use.
  • the technical problem to be solved by the utility model is to overcome the defects of the prior art, and to provide a helmet with a simple structure and a two-way locking and fixing, and a head massager using the same.
  • the technical solution of the present invention is to provide an adjustable helmet, comprising a ring-shaped weft housing and a warp direction shell spanning the weft housing, the weft direction At least one of the housing and the meridional housing is provided with an adjustment device for adjusting the length of the housing, and the adjustment device is provided with a two-way locking mechanism.
  • the two-way locking mechanism includes a ratchet and a ratchet seat that are engaged with each other.
  • the ratchet has an upper ratchet and a lower ratchet in opposite directions, and the ratchet seat is sleeved on the ratchet, and the ratchet seat is respectively provided with the upper and lower spines Upper ratchet ring and lower ratchet ring.
  • the ratchet includes a body, the upper and lower ratchets are symmetrically disposed along a radial direction of the body, and the upper and lower ratchets are disposed forward and backward along an axial direction of the body,
  • the upper and lower spine buckles are symmetrically disposed with a first mounting slot, the two first mounting slots are located on the same circumferential line, and the inner side of the knob is respectively disposed to be respectively disposed in the two first mountings The first fixed column of the slot.
  • a second fixing post is disposed on the lower spine and on a radial axis of the body, the second fixing post abuts the edge of the upper ratchet, and the inner side of the knob is correspondingly disposed There is a second mounting groove that is slidable when the second fixing post is rotated.
  • the outer edge of the upper ratchet is provided with a first protrusion
  • the outer edge of the lower ratchet is provided with a second protrusion
  • the first protrusion and the second protrusion are along the circumference of the ratchet
  • the inner side of the direction is a right angle surface
  • the outer side surface is a circular arc surface.
  • a gap is formed between the upper ratchet and the lower ratchet and the body, and the gap is curved.
  • the adjusting device includes a fixed casing disposed on the outer side of the weft casing or the warp casing, a knob mounted on the fixed casing, and a knob mounted on the weft casing or the warp casing
  • An adjustment block, the ratchet is fixed to an inner side of the knob, and the adjustment block is fixed to an inner side of the ratchet.
  • At least one of the weft housing or the warp direction housing is provided with a first card slot and a second card slot that overlap each other, and the upper slot of the first card slot is provided with an upper tooth a lower rack along the lower slot of the second slot, the adjusting block is disposed in the first slot and the second slot and respectively meshes with the upper rack and the lower rack Gears.
  • the utility model also provides a massager comprising a helmet and a massager arranged on the helmet, wherein the helmet is the above-mentioned adjustable helmet.
  • a two-way locking mechanism is disposed in the adjusting device, and the adjustable length weft or warp casing is locked by the two-way locking mechanism, and the weft or warp casing After the adjusting device is opened, it is locked and fixed by the two-way locking mechanism, and the weft housing or the warp casing is fixed in the extending or contracting direction, and can no longer continue to expand or inwardly contract; when the weft shell or warp direction After the casing is contracted by the adjusting device, the casing is locked and fixed by the two-way locking mechanism, and the weft casing or the warp casing is fixed in the extending or contracting direction, and can no longer continue to contract or extend outward, so that the helmet is in use. In the state, it has a fixed head circumference size, which is convenient for the user to use; when the above-mentioned adjustable helmet is applied to the head massager, the massage is more convenient.
  • FIG. 1 is a perspective exploded view of a preferred embodiment of the adjustable helmet of the present invention
  • FIG. 2 is a schematic perspective view of a ratchet wheel in an embodiment of the present invention.
  • FIG. 3 is a schematic perspective view of a knob of the embodiment of the present invention.
  • FIG. 4 is a schematic perspective view of a ratchet seat in the embodiment of the present invention.
  • Figure 5 is a schematic view showing the state of the adjustable helmet when it is locked in the embodiment of the present invention.
  • FIG. 6 is a schematic view showing a state in which the adjustable helmet is contracted and adjusted in the embodiment of the present invention.
  • FIG. 7 is a schematic view showing a state in which the adjustable helmet is expanded and adjusted in the embodiment of the present invention.
  • a two-way locking mechanism is disposed in the adjusting device, and the adjustable length weft or warp casing is locked by the two-way locking mechanism, and the weft or warp casing After the adjusting device is opened, it is locked and fixed by the two-way locking mechanism, and the weft housing or the warp casing is fixed in the extending or contracting direction, and can no longer continue to expand or inwardly contract; when the weft shell or warp direction After the casing is contracted by the adjusting device, the casing is locked and fixed by the two-way locking mechanism, and the weft casing or the warp casing is fixed in the extending or contracting direction, and can no longer continue to contract or extend outward, so that the helmet is in use. In the state, it has a fixed head circumference size, which is convenient for the user to use; when the above-mentioned adjustable helmet is applied to the head massager, the massage is more convenient.
  • the two-way locking mechanism may be a ratchet and a ratchet seat that are engaged with each other, or a turntable with a symmetrical locking piece and a turntable seat matched thereto, and of course, other locking mechanisms. .
  • the two-way locking mechanism is a ratchet and a ratchet seat that are engaged with each other.
  • the adjustable helmet 1 includes a ring-shaped weft casing 11 and a meridional casing 12 spanning the weft casing 11 , at least one of the weft casing 11 and the warp casing 12 . It is made up of two shells that can move each other.
  • the weft housing 11 is formed by splicing the first housing 13 and the second housing 14 that are mutually movable, and the third housing 15 and the fourth housing 16 are movable relative to each other. composition.
  • the splicing portion of the first housing 13 and the second housing 14 and the splicing portion of the third housing 15 and the fourth housing 16 are each provided with an adjusting device 2.
  • the weft housing 11 will be described as an example.
  • the adjusting device 2 includes a fixing shell 21 disposed outside the first housing 13 and the second housing 14 , a knob 22 mounted on the fixing shell 21 , and being fixed to the inside of the knob 22 and acting on the first housing 13 and the An adjustment block on the second housing 14.
  • a two-way locking mechanism 3 is disposed in the adjusting device 2.
  • the bidirectional locking mechanism 3 includes a ratchet 31 and a ratchet seat 32.
  • the ratchet 31 has an upper ratchet 311 and a lower ratchet 312 in opposite directions, and the ratchet seat 32 is sleeved.
  • the ratchet seat 32 is provided with an upper ratchet ring 321 and a lower ratchet ring 322 which are respectively engaged with the upper ratchet 311 and the lower ratchet 312.
  • the ratchet 31 is fixed to the inner side of the knob 22, and the adjustment block is fixed to the inner side of the ratchet 31.
  • the ratchet 31 includes a columnar body 313.
  • the upper and lower ratchets 311 and 312 are disposed in the axial direction of the body 313, and the upper and lower ratchets 311 and 312 are respectively semi-circular.
  • the two semi-circular structures are symmetrically disposed along a radial axis of the body 313.
  • the upper and lower ratchets 311 and 312 are symmetrically disposed with the first mounting grooves 3111 and 3121 along the radial axis.
  • the two first mounting grooves 3111 and 3121 are located on the same circumferential line.
  • Two symmetrical first fixing posts 221 are disposed on the inner side of the knob 22, and the two first fixing posts 221 are respectively disposed in the first mounting slots 3111, 3121.
  • the ratchet wheel 31 and the ratchet seat 32 are effectively pulled apart by the first fitting grooves 3111 and 3121 and the first fixing post 221 which are engaged with each other.
  • two lower fixing posts 3122 are disposed on the lower ratchet 312 and located at the radial axis, and both of the first fixing posts 3122 abut against the edge of the top buckle 311.
  • Two second mounting slots 222 are disposed on the inner side of the knob 22, and the two second fixing posts 3122 are respectively slidably disposed in the two second mounting slots 222.
  • a hollow gap 314 is provided between the upper buckle 311 and the body 313, and a hollow gap 314 is also provided between the lower buckle 312 and the body 313, and the gap 314 is curved.
  • the upper ratchet 311 and the lower ratchet 312 are more elastic and more easily separated from the ratchet seat 32 when rotated.
  • the ratchet seat 32 is a hollow sleeve-like structure
  • the upper ratchet ring 321 is disposed on the outer side of the hollow inner hole of the sleeve structure
  • the lower ratchet ring 322 is disposed on the inner side of the upper ratchet ring 321 .
  • the upper ratchet ring 321 has a left side tooth surface of the upper ratchet tooth 3211 which is a right angle surface, the right side tooth surface is a sloped inclined surface
  • the lower ratchet ring 322 has a lower ratchet tooth 3221 whose left side tooth surface is an inclined inclined surface, and the right side The tooth surface is a right angle surface.
  • the outer edge of the upper ratchet 311 of the ratchet 31 is provided with a first protrusion 3112
  • the outer edge of the lower ratchet 312 is provided with a second protrusion 3123.
  • the inner side surface of the first protrusion 3112 in the circumferential direction of the ratchet wheel 31 is a right-angled surface, and the outer side surface is a circular arc surface.
  • the inner side surface of the second protrusion 3123 in the circumferential direction of the ratchet wheel 31 is a right-angled surface, and the outer side surface is a circular arc surface.
  • the ratchet seat 32 is sleeved on the outer side of the ratchet 31.
  • the right angle surface of the first protrusion 3112 is caught at the left tooth surface of the upper ratchet 3211 on the upper ratchet ring 321, and the right angle of the second protrusion 3123 The card is stuck to the right flank of the lower ratchet 3221 on the lower ratchet ring 322.
  • the weft housing 11 is formed by splicing the first housing 13 and the second housing 14, and the first housing 13 and the second housing 14 are respectively overlapped at the splicing portion.
  • the upper slot of the first slot 131 is provided with an upper rack 1311
  • the lower slot of the second slot 141 is provided with a lower rack 1411.
  • the adjusting block is a gear 23 that is inserted through the first card slot 131 and the second card slot 141 and meshes with the upper rack 1311 and the lower rack 1411, respectively.
  • a fixing hole 223 is defined in the center of the knob 22.
  • a through hole 3131 is defined in the center of the body 313 of the ratchet 31.
  • One end of the transmission shaft 231 of the gear 23 is screwed into the fixing hole 223 through the through hole 2331.
  • the other end is fixed to the inside of the second housing 14 such that the gear 23 is fixed to the ratchet 31 and the knob 22 by the transmission shaft 231.
  • the mutual movement between the first housing 13 and the second housing 14 is realized by the upper rack 1311 and the lower rack 1411 that mesh with the gear 23, and the first housing 13 and the second housing 14 are adjusted.
  • the structure for moving the two to each other is not limited to the above-described configuration, and other methods such as overlapping setting and adjustment by means of the corresponding movable buckle may be employed.
  • a rack cover 24 is further disposed on the outer side of the splicing portion of the first housing 13 and the second housing 14 , and the rack cover 24 is fixed to the second housing 14 .
  • the fixed casing 21 described above is provided on the outer side of the rack cover 24.
  • the weft length of the rack cover 24 is the sum of the lengths of the first card slot 131 and the second card slot 141 when fully expanded.
  • a central hole 241 through which the gear 23 extends is formed in the middle of the rack cover 24.
  • the ratchet seat 32, the ratchet 31 and the knob 22 are sequentially inserted from the front surface of the mounting hole 211 of the fixed casing 21, and the upper ratchet 311 of the ratchet 31 is
  • the lower ratchet 312 is in a state of being engaged with the upper ratchet ring 321 and the lower ratchet ring 322 of the ratchet seat 32, respectively.
  • the mounted fixed casing 21 is fixed to the weft casing 11 such that the transmission shaft 231 of the gear 23 mounted on the weft casing 11 is fixed to the fixing hole 223 of the knob 22 through the ratchet wheel 31.
  • the two symmetric first fixing posts 221 on the knob 22 are respectively located at the centers of the two first mounting slots 3111 and 3121.
  • the gear 23 cannot be rotated, and the upper rack 1311 and the lower rack
  • the 1411 is also incapable of meshing with the gear 23 and is displaced so that there is no mutual movement between the first housing 13 and the second housing 14, and the weft housing 11 does not contract or expand.
  • the first fixing post 221 moves upward, because the engaging surface of the lower ratchet 312 of the ratchet 31 and the lower ratchet ring 322 of the ratchet seat 32 is located on the right side of the lower ratchet 3221, thus, in the two first fixing posts 221
  • the right angle surface of the second protrusion 3123 on the lower ratchet 312 is separated from the right right angle tooth surface of the lower ratchet 3221 of the lower ratchet ring 322; and the upper ratchet 311 is first convex when rotated clockwise
  • the arc surface of the 3112 is smoothly separated from the inclined slope of the upper ratchet 3211 of the upper ratchet ring 321, so that the ratchet 31 moves completely away from the constraint of the ratchet seat 32, thereby driving the gear 23 to move clockwise.
  • the upper rack 1311 and the lower rack 1411 which are meshed with the upper and lower sides of the gear 23 are respectively moved inward, so that the first housing 13 and the second housing 14 are contracted inward, that is, the weft direction of the weft housing 11 becomes small.
  • the knob 22 stops rotating, the rotating first protrusion 3112 and the second protrusion 3123 also stop rotating, and the upper ratchet 3211 and the lower spine which are just stuck at the positions of the first protrusion 3112 and the second protrusion 3123.
  • the tooth 3221 is so that the ratchet wheel 31 cannot be rotated under the action of no external force, so that the gear 23 cannot rotate, thereby ensuring that the upper rack 1311 and the lower rack 1411 cannot move inward or outward, thereby expanding or contracting directions.
  • the weft housing 11 is locked.
  • the fixing post 221 moves downward, because the engaging surface of the upper ratchet 311 of the ratchet 31 and the upper ratchet ring 321 of the ratchet seat 32 is located on the left side of the upper ratchet 3211, thus, the pulling of the two first fixing posts 221 Lower, the upper ratchet 311 is separated from the upper ratchet 3211 of the upper ratchet ring 321; and the lower ratchet 312 has a circular arc surface of the second protrusion 3123 and a lower ratchet 3221 of the lower ratchet ring 322 when rotated clockwise
  • the inclined inclined surface is smoothly transitioned and separated, so that the ratchet 31 moves completely away from the constraint of the ratchet seat 32, thereby driving the gear 23 to move counterclockwise.
  • the upper rack 1311 and the lower rack 1411 meshing with the gear 23 up and down.
  • the inner casing 13 and the second casing 14 are respectively expanded outward, that is, the weft casing 11 has a larger weft dimension.
  • the rotating first protrusion 3112 and the second protrusion 3123 also stop rotating, and just hit the upper ratchet 3211 at the position where the first protrusion 3112 and the second protrusion 3123 are located.
  • the above-mentioned adjusting device 2 is also disposed on the warp direction housing 12, and the specific structure thereof will not be described again.
  • the above-mentioned adjusting device 2 in the middle of the weft casing 11 and the warp casing 12, it is only necessary to provide two adjusting devices, that is, two knobs 22, on the entire adjustable helmet to realize the weft direction and the warp direction.
  • the structure in this embodiment is simpler and more convenient to operate.
  • the utility model also provides a head massager (not shown), which comprises the above-mentioned adjustable helmet 1 and a massager provided on the adjustable helmet 1.
  • a head massager (not shown), which comprises the above-mentioned adjustable helmet 1 and a massager provided on the adjustable helmet 1.

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  • Helmets And Other Head Coverings (AREA)
  • Finger-Pressure Massage (AREA)
  • Massaging Devices (AREA)

Description

调节式头盔及头部按摩器 技术领域
本实用新型涉及保健按摩器械技术领域，更具体地说，是涉及一种调节式头盔及头部按摩器。
背景技术
头部按摩器用于对使用者头部进行按摩，其一般包括头盔及按摩装置。头盔用于佩戴在使用者头部，按摩装置设在该头盔上并用于对使用者头部进行按摩。为了适应不同头围大小的使用者使用，头盔一般为可调节式的。这种可调节式的头盔包括经向壳体和纬向壳体，其中经向壳体和纬向壳体上均设有可调整长度的调节装置，但是现有的这种调节装置只具有单向锁紧结构，即经向壳体和纬向壳体被打开固定后沿伸缩方向上被锁紧，头盔不可再缩小，但是于伸展方向上未被固定，经向壳体和纬向壳体可继续伸展，这种单向锁紧的头盔在使用时也存在较多不便。
 技术问题
本实用新型所要解决的技术问题在于克服现有技术之缺陷，提供一种结构简单，且可双向锁紧固定的头盔以及采用这种头盔的头部按摩器。
技术解决方案
为解决上述技术问题，本实用新型的技术方案是：提供一种调节式头盔，包括圈状的纬向壳体及跨接于所述纬向壳体上的经向壳体，所述纬向壳体和所述经向壳体中至少一个上设有可调节壳体长度的调节装置，所述调节装置内设有一双向锁紧机构。
具体地，所述双向锁紧机构包括相互卡合的棘轮及棘轮座。
具体地，所述棘轮具有方向相反的上棘扣及下棘扣，所述棘轮座套设于所述棘轮上，所述棘轮座上设有分别与所述上棘扣及下棘扣配合的上棘齿圈及下棘齿圈。
进一步地，所述棘轮包括一本体，所述上棘扣及下棘扣沿所述本体的径向对称设置，所述上棘扣及下棘扣沿所述本体的轴向前、后设置，所述上棘扣及下棘扣上对称设有第一安装槽，所述两个第一安装槽位于同一圆周线上的，所述旋钮内侧设有可分别置于所述两个第一安装槽的第一固定柱。
进一步地，所述下棘扣上且位于所述本体的径向轴线上设有第二固定柱，所述第二固定柱与所述上棘扣的边缘抵顶，所述旋钮的内侧对应设有可供所述第二固定柱旋转时滑设的第二安装槽。
更进一步地，所述上棘扣的外侧边缘设有一第一凸起，所述下棘扣的外侧边缘设有一第二凸起，所述第一凸起及第二凸起沿所述棘轮圆周方向的内侧面均为直角面，外侧面为圆弧面。
更进一步地，所述上棘扣及所述下棘扣与所述本体之间均设有镂空的间隙，且所述间隙呈曲线状。
具体地，所述调节装置包括设于所述纬向壳体或所述经向壳体外侧的固定壳，安装于固定壳上的旋钮以及安装于所述纬向壳体或经向壳体的调节块，所述棘轮固定于所述旋钮内侧，所述调节块固定于所述棘轮的内侧。
更具体地，所述纬向壳体或所述经向壳体上至少之一设有相互重叠的第一卡槽及第二卡槽，所述第一卡槽的上槽沿开设有上齿条，所述第二卡槽的下槽沿开设有下齿条，所述调节块为穿设于所述第一卡槽及第二卡槽且分别与所述上齿条与下齿条啮合的齿轮。
本实用新型还提供了一种按摩器，包括头盔及设于头盔上的按摩器，所述头盔为上述的调节式头盔。
 有益效果
本实用新型实施例中，于调节装置内设一双向锁紧机构，通过双向锁紧机构对可调节长度的纬向壳体或经向壳体进行锁定，当纬向壳体或经向壳体经调节装置打开后，经双向锁紧机构锁紧固定，纬向壳体或经向壳体于伸展或收缩方向上均被固定，不能再继续伸展或向内收缩；当纬向壳或经向壳体经调节装置收缩后，经双向锁紧机构锁紧固定，纬向壳体或经向壳体于伸展或收缩方向上均被固定，不能再继续收缩或向外伸展，从而使头盔在使用状态下具有固定的头围大小，方便使用者使用；将上述的调节式头盔应用于头部按摩器时，使得按摩时更方便。
附图说明
图1是本实用新型调节式头盔的一较佳实施例的立体分解示意图；
图2是本实用新型实施例中棘轮的立体结构示意图；
图3是本实用新型实施例中旋钮的立体结构示意图；
图4是本实用新型实施例中棘轮座的立体结构示意图；
图5是本实用新型实施例中调节式头盔锁紧时的状态示意图；
图6是本实用新型实施例中调节式头盔收缩调节时的状态示意图；
图7是本实用新型实施例中调节式头盔扩张调节时的状态示意图。
 本发明的实施方式
为了使本实用新型的目的、技术方案及优点更加清楚明白，以下结合附图及实施例，对本实用新型进行进一步详细说明。应当理解，此处所描述的具体实施例仅仅用以解释本实用新型，并不用于限定本实用新型。
本实用新型实施例提供的调节式头盔，包括圈状的纬向壳体及跨接于所述纬向壳体上的经向壳体，所述纬向壳体和所述经向壳体中至少一个上设有可调节壳体长度的调节装置，所述调节装置内设有一双向锁紧机构。
本实用新型实施例中，于调节装置内设一双向锁紧机构，通过双向锁紧机构对可调节长度的纬向壳体或经向壳体进行锁定，当纬向壳体或经向壳体经调节装置打开后，经双向锁紧机构锁紧固定，纬向壳体或经向壳体于伸展或收缩方向上均被固定，不能再继续伸展或向内收缩；当纬向壳或经向壳体经调节装置收缩后，经双向锁紧机构锁紧固定，纬向壳体或经向壳体于伸展或收缩方向上均被固定，不能再继续收缩或向外伸展，从而使头盔在使用状态下具有固定的头围大小，方便使用者使用；将上述的调节式头盔应用于头部按摩器时，使得按摩时更方便。
在本实用新型实施例中，该双向锁紧机构可以为相互卡合的棘轮及棘轮座，也可以为设有对称锁片的转盘及与其配合的转盘座，当然也可以为其它的锁紧机构。
以下就双向锁紧机构为相互卡合配合的棘轮及棘轮座为例，结合附图对本实用新型的具体实现进行详细描述。
参照图1，为本实用新型调节式头盔1的一较佳实施例的立体分解示意图。本实施例中，调节式头盔1包括圈状的纬向壳体11及跨接于纬向壳体11上的经向壳体12，纬向壳体11及经向壳体12中至少之一由可相互移动的两壳体拼接而成。本实施例中，纬向壳体11由可相互移动的第一壳体13及第二壳体14拼接而成，经向壳体由可相互移动的第三壳体15及第四壳体16组成。第一壳体13及第二壳体14拼接处、第三壳体15及第四壳体16的拼接处均设有调节装置2。以下先以纬向壳体11为例进行描述。
调节装置2包括设于第一壳体13及第二壳体14外侧的固定壳21，安装于固定壳21上的旋钮22以及固定于旋钮22内侧且作用于所述第一壳体13及第二壳体14上的调节块。调节装置2内设有一双向锁紧机构3。
作为本实用新型的一实施例，参照图2及图4，双向锁紧机构3包括棘轮31及棘轮座32，棘轮31具有方向相反的上棘扣311及下棘扣312，棘轮座32套设于棘轮31上，棘轮座32上设有分别与上棘扣311及下棘扣312配合的上棘齿圈321及下棘齿圈322。棘轮31固定于旋钮22内侧，调节块固定于棘轮31的内侧。
具体地，棘轮31包括一柱状的本体313，上棘扣311及下棘扣312沿本体313的轴向上、下错位设置，且上棘扣311及下棘扣312分别为半圆形结构，两半圆形结构沿本体313的一径向轴线对称设置。上棘扣311及下棘扣312上沿径向轴线对称设有第一安装槽3111、3121，两个第一安装槽3111、3121位于同一圆周线上的。旋钮22内侧设有两对称的第一固定柱221，安装时两个第一固定柱221分别对应置于第一安装槽3111、3121内。通过上述相互配合的第一安装槽3111、3121及第一固定柱221，有效拉动棘轮31与棘轮座32分离。
具体地，下棘扣312上且位于径向轴线处设有两个第二固定柱3122，两个第一固定柱3122均抵顶上棘扣311的边缘。旋钮22的内侧对应设有两个第二安装槽222，安装时所述两个第二固定柱3122分别滑设于所述两个第二安装槽222内。而通过设置上述相互配合的第二安装槽222及第二固定柱3122，使得旋钮22旋转时有效带动棘轮31旋转。
作为本实用新型实施例的一优化方案，上棘扣311与本体313之间设有镂空的间隙314，下棘扣312与本体313之间也设有镂空的间隙314，且间隙314呈曲线状。采用这种间隙设计，使得上棘扣311与下棘扣312弹性更好，在旋转时更容易与棘轮座32分离。
作为本实用新型的一实施例，棘轮座32为一中空的套状结构，上棘齿圈321设于套状结构中空内孔的外侧，下棘齿圈322设于上棘齿圈321的内侧。上棘齿圈321具有的上棘齿3211的左侧齿面为直角面，右侧齿面为倾斜斜面，下棘齿圈322具有的下棘齿3221的左侧齿面为倾斜斜面，右侧齿面为直角面。请结合图2，棘轮31的上棘扣311的外侧边缘设有一第一凸起3112，下棘扣312的外侧边缘设有一第二凸起3123。第一凸起3112沿棘轮31圆周方向的内侧面为直角面，外侧面为圆弧面，第二凸起3123沿棘轮31圆周方向的内侧面为直角面，外侧面为圆弧面。棘轮座32套设于棘轮31的外侧，此时，第一凸起3112的直角面卡于上棘齿圈321上的上棘齿3211的左侧齿面处，第二凸起3123的直角面卡于下棘齿圈322上的下棘齿3221的右侧齿面处。
作为本实用新型的一实施例，纬向壳体11由第一壳体13及第二壳体14拼接而成，第一壳体13及第二壳体14于拼接处分别设有相互重叠第一卡槽131及第二卡槽141。第一卡槽131的上槽沿开设有上齿条1311，第二卡槽141的下槽沿开设有下齿条1411。本实施例中，调节块即为穿设于第一卡槽131及第二卡槽141且分别与上齿条1311与下齿条1411啮合的齿轮23。参照图2、图3，旋钮22的中心设有一固定孔223，棘轮31的本体313中心设有一通孔3131，齿轮23的传动轴231的一端穿过通孔2331旋入固定于固定孔223内，另一端固定于第二壳体14的内部，这样，即通过传动轴231将齿轮23与棘轮31、旋钮22固定于一体。本实施例中，通过与齿轮23啮合的上齿条1311及下齿条1411实现第一壳体13及第二壳体14之间的相互移动，调节第一壳体13及第二壳体14使二者相互移动的结构不限于上述的结构，也可以采用其它的方式，如重叠设置并利用对应活动扣的方式来进行调节。
作为本实用新型的一实施例，第一壳体13及第二壳体14的拼接处的外侧还设有一齿条盖24，齿条盖24固定于第二壳体14上。上述的固定壳21设于齿条盖24的外侧。齿条盖24的纬向长度与第一卡槽131及第二卡槽141完全扩张时的长度之和。齿条盖24的中部开设有可供齿轮23伸出的中心孔241。这样，第一壳体13及第二壳体14在收缩或扩张时，其第一卡槽131及第二卡槽141均被完全遮盖于齿条盖24下方，对上齿条1311及下齿条1411均起到保护作用。
本实施例中调节装置2及双向锁紧机构3安装时，由固定壳21上的安装孔211的正面依次装入棘轮座32、棘轮31及旋钮22，且使棘轮31的上棘扣311与下棘扣312处于分别与棘轮座32的上棘齿圈321及下棘齿圈322卡合的状态。将安装好的固定壳21固定于纬向壳体11上，使已安装于纬向壳体11上齿轮23的传动轴231穿过棘轮31固定于旋钮22的固定孔223上。
请参照图5，本实施例中，调节式头盔1常态下旋钮22未旋转时，旋钮22上的两个对称的第一固定柱221分别位于两个第一安装槽3111、3121的中心，此时，棘轮31的上棘扣311与下棘扣312处于分别与棘轮座32的上棘齿圈321及下棘齿圈322卡合的状态，齿轮23不能转动，上齿条1311及下齿条1411也不能与齿轮23啮合传动而有位移，从而第一壳体13及第二壳体14之间不会有相互的移动，纬向壳体11不会收缩或扩张。
参照图2、图3、图4、图6，当顺时针旋转旋钮22时，由于棘轮31上的两个第二固定柱3122分别对应设于旋钮22的两个第二安装槽222内，故在两个第二固定柱3122的带动下，棘轮31随旋钮22转动。由于旋钮22转动时固定于旋钮22内侧的两个第一固定柱221随之顺时针旋转，其中位于第一安装槽3121内的第一固定柱221向下运动，位于第一安装槽3111内的第一固定柱221向上运动，由于棘轮31的下棘扣312与棘轮座32的下棘齿圈322的卡合面位于下棘齿3221的右侧，这样，在两个第一固定柱221的拉动下，下棘扣312上的第二凸起3123的直角面与下棘齿圈322的下棘齿3221的右侧直角齿面分离；而上棘扣311在顺时针旋转时其第一凸起3112的圆弧面与上棘齿圈321的上棘齿3211的倾斜斜面平稳过渡而分离，这样，棘轮31完全脱离棘轮座32的约束而运动，从而带动齿轮23顺时针运动，此时，与齿轮23上、下啮合的上齿条1311及下齿条1411分别向内运动，从而第一壳体13及第二壳体14向内收缩，即纬向壳体11纬向尺寸变小。当旋钮22停止旋转时，旋转的第一凸起3112和第二凸起3123也停止转动，且恰好卡于第一凸起3112和第二凸起3123所在位置处的上棘齿3211和下棘齿3221上，这样在无外力作用下，棘轮31固定无法转动，因此齿轮23也无法旋转，从而保证上齿条1311及下齿条1411无法向内或向外运动，从而于扩张或收缩方向均对纬向壳体11进行锁定。
同样地，参照图2、图3、图4及图7，当逆时针旋转旋钮22时，在两个第二固定柱3122的带动下，棘轮31随旋钮22转动。旋钮22转动时固定于旋钮22内侧的两个第一固定柱221随之逆时针旋转，其中位于第一安装槽3121内的第一固定柱221向上运动，位于第一安装槽3111内的第一固定柱221向下运动，由于棘轮31的上棘扣311与棘轮座32的上棘齿圈321的卡合面位于上棘齿3211的左侧，这样，在两个第一固定柱221的拉动下，上棘扣311与上棘齿圈321的上棘齿3211分离；而下棘扣312在顺时针旋转时其第二凸起3123的圆弧面与下棘齿圈322的下棘齿3221的倾斜斜面平稳过渡而分离，这样，棘轮31完全脱离棘轮座32的约束而运动，从而带动齿轮23逆时针运动，此时，与齿轮23上、下啮合的上齿条1311及下齿条1411分别向内运动，从而第一壳体13及第二壳体14向外扩张，即纬向壳体11纬向尺寸变大。同样地，当旋钮22停止旋转时，旋转的第一凸起3112和第二凸起3123也停止转动，且恰好卡于第一凸起3112和第二凸起3123所在位置处的上棘齿3211和下棘齿3221上，这样在无外力作用下，棘轮31固定无法转动，因此齿轮23也无法旋转，从而保证上齿条1311及下齿条1411无法向内或向外运动，从而于扩张或收缩方向均对纬向壳体11进行锁定。
本实施例中，经向壳体12上也设置有上述的调节装置2，其具体结构不再赘述。通过于纬向壳体11及经向壳体12的中部均设置上述的调节装置2，故于整个调节式头盔上只需设置两个调节装置即两个旋钮22即可实现纬向及经向的调节，与现有技术中设置三个调节旋钮的结构相比，本实施例中的结构更简单，操作也更方便。
本实用新型还提供了一种头部按摩器（图中未示出），所述头部按摩器包括上述的调节式头盔1及设于调节式头盔1上的按摩器。将上述调节式头盔1应用于头部按摩器上，只需两个旋钮22即可调节头部按摩器的头围大小，同时，调节后可对头盔进行双向锁定，头盔不能任意收缩或扩张，这样，按摩使用时也更方便。
以上仅为本实用新型的较佳实施例而已，并不用以限制本实用新型，凡在本实用新型的精神和原则之内所作的任何修改、等同替换和改进等，均应包含在本实用新型的保护范围之内。

Claims (10)

  1. 一种调节式头盔，包括圈状的纬向壳体及跨接于所述纬向壳体上的经向壳体，所述纬向壳体和所述经向壳体中至少一个上设有可调节壳体长度的调节装置，其特征在于：所述调节装置内设有一双向锁紧机构。
  2. 如权利要求1所述的调节式头盔，其特征在于：所述双向锁紧机构包括相互卡合的棘轮及棘轮座。
  3. 如权利要求2所述的调节式头盔，其特征在于：所述棘轮具有方向相反的上棘扣及下棘扣，所述棘轮座套设于所述棘轮上，所述棘轮座上设有分别与所述上棘扣及下棘扣配合的上棘齿圈及下棘齿圈。
  4. 如权利要求3所述的调节式头盔，其特征在于：所述棘轮包括一本体，所述上棘扣及下棘扣沿所述本体的径向对称设置，所述上棘扣及下棘扣沿所述本体的轴向前、后设置，所述上棘扣及下棘扣上对称设有第一安装槽，所述两个第一安装槽位于同一圆周线上的，所述旋钮内侧设有可分别置于所述两个第一安装槽的第一固定柱。
  5. 如权利要求4所述的调节式头盔，其特征在于：所述下棘扣上且位于所述本体的径向轴线上设有第二固定柱，所述第二固定柱与所述上棘扣的边缘抵顶，所述旋钮的内侧对应设有可供所述第二固定柱旋转时滑设的第二安装槽。
  6. 如权利要求3或4或5所述的调节式头盔，其特征在于：所述上棘扣的外侧边缘设有一第一凸起，所述下棘扣的外侧边缘设有一第二凸起，所述第一凸起及第二凸起沿所述棘轮圆周方向的内侧面均为直角面，外侧面为圆弧面。
  7. 如权利要求4或5所述的调节式头盔，其特征在于：所述上棘扣及所述下棘扣与所述本体之间均设有镂空的间隙，且所述间隙呈曲线状。
  8. 如权利要求2所述的调节式头盔，其特征在于：所述调节装置包括设于所述纬向壳体或所述经向壳体外侧的固定壳，安装于固定壳上的旋钮以及安装于所述纬向壳体或经向壳体的调节块，所述棘轮固定于所述旋钮内侧，所述调节块固定于所述棘轮的内侧。
  9. 如权利要求2或8所述的调节式头盔，其特征在于：所述纬向壳体或所述经向壳体上至少之一设有相互重叠的第一卡槽及第二卡槽，所述第一卡槽的上槽沿开设有上齿条，所述第二卡槽的下槽沿开设有下齿条，所述调节块为穿设于所述第一卡槽及第二卡槽且分别与所述上齿条与下齿条啮合的齿轮。
  10. 一种按摩器，包括头盔及设于头盔上的按摩器，其特征在于：所述头盔为如权利要求1至9中任一项所述调节式头盔。
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