TWM510168U - Adjustable helmet and helmet massager - Google Patents

Description

Adjustable helmet and helmet massager

This creation belongs to the massager, especially with regard to an adjustable helmet and a helmet massager.

The massager can be divided into different types according to different parts of the human body, such as a neck massager and a head massager. At present, the massager for the human head massage mainly adopts two structural forms, one uses the hand grip of the user to move the massager on the head, the structure is simple but the operation is troublesome, and the other uses the helmet. The structure is that the massager is directly worn on the head, and the massager massages the head position by itself, which is convenient. However, in the above-mentioned helmet type massager, since the size of the human head is different, the massager needs to adjust the size of the helmet. However, in the existing massager, the control of the size adjustment of the helmet is relatively simple. One-way adjustment, and easy to loose after adjustment is not very convenient.

The purpose of this creation is to provide an adjustable helmet that is intended to be used to solve existing The helmet is not a very convenient problem when adjusting its size.

In order to solve the above technical problem, the technical solution of the present invention is to provide an adjustable helmet, comprising a helmet body, the helmet body comprising a front housing and a rear housing, and a connection between the front housing and the rear housing Two racks are connected, the two racks have overlapping portions, and the front casing, the rear casing and the two racks are arranged to form an endless belt that can be fastened to the head of the human body, and the helmet body is further provided with An adjusting mechanism for controlling the relative expansion or relative contraction of the rack to adjust the size of the annular belt, the adjusting mechanism comprising a knob element and a locking element, the knob element comprising a rotatable knob outer ring and a knob housing having internal teeth And a ratchet set coupled to the knob housing, the ratchet set including a ratchet that is rotated by the outer ring of the knob and coupled to the knob housing, and a ratchet seat that cooperates with the ratchet, the ratchet seat being provided with up and down and opposite directions a pair of ratchet rings, wherein the ratchet wheel is provided with two dial teeth which are respectively matched with the two ratchet ring and are arranged above and below the outer ring of the knob, and the locking element is disposed on the helmet a rotating shaft, a gear sleeved on the rotating shaft, and a knob lock sleeved on the rotating shaft to prevent the ratchet seat from rotating, the gear meshes with the two racks and the internal tooth of the knob housing, the knob lock The buckle is provided with a first ring gear, and the ratchet seat is provided with a second ring gear that meshes with the first ring gear.

Further, the ratchet set further includes a ratchet unlocking plate driven by the outer ring of the knob, and the ratchet unlocking plate is provided with two positioning posts that are centrally symmetric about the rotation axis of the ratchet unlocking plate, and the ratchet includes a ratchet body and Two rotating blocks that are rotatable about the ratchet body and are disposed above and below, and the two teeth are respectively located on the two rotating blocks, and each of the rotating blocks further has a sliding slot, and the two positioning posts are respectively slidably disposed on the rotating block Inside the two chutes.

Specifically, the knob housing has a plurality of latching teeth disposed on one end of the knob housing, and the ratchet body is provided with a plurality of latching slots extending outwardly for engaging the latching teeth. The latches are in one-to-one correspondence with the respective card slots.

Further, the method further includes two tension springs, one of the two ends of the tension spring is fixed on the helmet body, and the other end is respectively fixed on the two racks, and the rotating shaft is further sleeved to abut the knob lock An elastic member that engages the first ring gear and the second ring gear, and the knob housing further has a knob button that is movable along the length of the elastic member and abuts the knob lock.

Further, the rotating shaft has a flange protruding from the outer edge surface thereof, the elastic member is sleeved on the rotating shaft and one end abuts against the flange, and the other end of the elastic member abuts the knob lock.

Specifically, the knob lock includes a rotary table and a boss extending upward along an axis of rotation of the rotary table, the first ring gear is located on the rotary table and surrounds the boss, and the boss has a shaft for the shaft a through groove extending through the boss and the rotating table and having an abutting baffle disposed along the inner wall of the through groove, the other end of the elastic member abutting against the abutting plate, and the protruding plate sequentially passes through the ratchet seat And the ratchet is engaged with the knob button.

Further, an end of the rotating shaft is further provided with a knob anti-rotation piece, and two end slides extending along a length of the through slot are provided at an end of the boss, and the knob anti-rotation piece is disposed at the end a slider in the slot and movable along the slot, and two ribs disposed on the slider and respectively slidably disposed in the two slides.

Further, a ruler is further disposed between the two joints of the front casing and the rear casing, and both ends of each of the rulers are respectively embedded in the front casing and the rear casing.

Further, the helmet body is further provided with a cover for concealing the two racks. The cover is provided with an opening, and the gear extends along the opening and engages with the internal teeth of the knob housing.

The present invention also provides a helmet type massager comprising the above-described adjustable helmet, on the inside of which a plurality of massage components for a human head massage are provided.

This creation has the following technical effects:

In the helmet of the present invention, the helmet body comprises two parts, a front casing and a rear casing, and two racks are connected between the two, and an adjustment mechanism is used for controlling the relative contraction or relative extension of the two racks, thereby controlling the front. The size of the diameter of the annular belt formed by the housing, the two racks and the rear housing comprises a knob element and a locking element for the adjustment mechanism, and the knob element comprises a knob outer ring, a knob housing and a ratchet set, when counterclockwise or When the outer ring of the knob is rotated clockwise, the outer ring of the knob drives the ratchet wheel in the ratchet set to rotate, and the ratchet wheel rotates the knob housing connected thereto, and the knob casing drives the gear meshing with the rotation thereof, and finally the two racks that are engaged by the gear are relatively extended. Or the relative contraction has reached the purpose of adjusting the diameter of the annular band. In this creation, the ratchet outer ring is driven between the outer ring of the knob and the knob casing, so that the outer ring of the knob can be rotated counterclockwise or clockwise. At the same time, because the ratchet seat is provided with two sets of teeth to the opposite ratchet ring, and the ratchet seat and the knob lock pass A ring gear is meshed with the second ring gear, and the knob lock restricts the rotation of the ratchet seat, so that the phenomenon that the two racks drive the gear to reverse drive due to the tensioning force can be avoided, that is, the loosening is not easy after the adjustment is completed. When the helmet is applied to the massager, the massage element is arranged on the helmet body, so that the user can adjust the diameter of the endless belt according to the need, thereby realizing the automatic adjustment of the massaging force of the massage component to the head. To ensure the comfort of the massage, the knob is used to adjust the counterclockwise and clockwise directions. The adjustment is convenient, and it is not easy to loosen after the adjustment is completed.

1‧‧‧ helmet body

11‧‧‧ front housing

12‧‧‧ Rear housing

121‧‧‧ Cover

13‧‧‧racks

14‧‧‧ rule

15‧‧‧ Cover

151‧‧‧ openings

2‧‧‧Adjustment agency

21‧‧‧ knob components

22‧‧‧Locking elements

23‧‧‧ knob outer ring

24‧‧‧ knob housing

241‧‧‧ card teeth

242‧‧‧ knob button

25‧‧‧ratchet group

251‧‧‧ ratchet

2511‧‧‧ teeth

2512‧‧‧rat body

2513‧‧‧Rotating block

2514‧‧ ‧ chute

2515‧‧‧ card slot

252‧‧‧ ratchet seat

2521‧‧‧ ratchet ring

2522‧‧‧second ring gear

253‧‧‧ratchet unlocking plate

2531‧‧‧Positioning column

26‧‧‧ shaft

261‧‧‧Flexible parts

262‧‧‧Flange

263‧‧‧ knob anti-rotation piece

2631‧‧‧Slider

2632‧‧‧ ribs

27‧‧‧ Gears

28‧‧‧ knob lock

281‧‧‧First ring gear

282‧‧‧Rotating table

283‧‧‧Boss

284‧‧‧through slot

285‧‧‧Resist the baffle

286‧‧ ‧ slide

29‧‧‧Spring

3‧‧‧ Massage elements

1 is a schematic structural view of a helmet type massager according to an embodiment of the present invention; FIG. 2 is a schematic structural view of the helmet type massager of FIG. 1 after the outer ring of the knob is opened; and FIG. 3 is an adjustment mechanism of the helmet type massage device of FIG. FIG. 4 is a schematic structural view of a ratchet wheel of the helmet type massage device of FIG. 1; FIG. 5 is a schematic structural view of the knob button of the helmet type massage device of FIG. 1 in a normal state; FIG. 6 is an enlarged view of a portion A of FIG. 7 is a schematic structural view of the helmet type massager of FIG. 1 after being pressed by a knob; FIG. 8 is an enlarged view of a portion B of FIG. 7; and FIG. 9 is a structural schematic view of the helmet type of the helmet type massager of FIG.

In order to make the purpose, technical solution and advantages of the present invention more clear, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It is understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

Referring to FIGS. 1-3, the present embodiment provides an adjustable helmet, including a helmet body 1. The helmet body 1 mainly includes two parts, a front housing 11 and a rear housing 12, and a front housing 11 and a rear housing 12 There are two oppositely disposed joints between the two joints, which are connected by a rack 13 between the two joints, that is, one rack 13 connects one of the joints between the front casing 11 and the rear casing 12, and two racks 13 There is a certain overlapping portion between the front housing 11 , the two racks 13 and the rear housing 12 to form a complete annular belt, by which the helmet can be fastened to the human head. An adjustment mechanism 2 is further provided on the helmet body 1, and the adjustment mechanism 2 can make two racks The relative movement or the opposite movement between the two 13 causes the two racks 13 to be relatively contracted or relatively extended to achieve the adjustment of the size of the annular belt. For the installation position of the adjustment mechanism 2, it can be located on the front housing 11. It can also be located on the rear housing 12, in the present invention, mainly taking the adjustment mechanism 2 on the rear housing 12 as an example, which mainly comprises a knob element 21 and a locking element 22, in particular, the knob element 21 comprises a rotatable element. a knob outer ring 23, a knob housing 24 having internal teeth (not shown), and a ratchet assembly 25 connected to the knob housing 24, the knob outer ring 23 is located on the knob housing 24, and the two are arranged to form a certain receiving space. The ratchet set 25 is located in the accommodating space, and the further ratchet set 25 mainly includes a ratchet 251 and a ratchet seat 252 engaged with the ratchet 251. The ratchet 251 is rotatable with the knob outer ring 23, and is also connected to the knob housing 24. After the outer ring 23 of the knob drives the ratchet 251 to rotate, the ratchet 251 drives the knob housing 24 to rotate. The ratchet wheel 251 is provided with two teeth 2511, and correspondingly two sets of ratchet rings 2521 are provided on the ratchet seat 252. The two ratchet rings 2521 are arranged up and down, the two ratchet rings 2521 are all helical teeth and opposite directions, and the two teeth 2511 are in one-to-one correspondence with the two sets of ratchet rings 2521. When the knob outer ring 23 drives the ratchet wheel 251 to rotate clockwise or When the counterclockwise rotation is performed, one of the teeth 2511 and the corresponding ratchet ring 2521 are unlocked, and the other tooth 2511 is in a mating state with the corresponding ratchet ring 2521. Of course, the cooperation does not affect the ratchet 251. The rotation in this direction only limits the rotation in the opposite direction of the ratchet 251. Specifically, the locking member 22 includes a rotating shaft 26 fixed to the helmet body 1, a gear 27 sleeved on the rotating shaft 26, and a rotation preventing the ratchet seat 252. In the present invention, the rotating shaft 26 is fixed on the rear casing 12, and the gear 27 and the knob lock 28 are sleeved on the rotating shaft 26, and the gear 27 is simultaneously with the two racks 13 and the knob. The inner teeth of the outer casing 24 are engaged and engaged, the gear 27 is rotatable about the rotating shaft 26, and the rotating shaft 26 limits the rotation of the knob lock 28, and the knob lock 28 is provided with a first ring gear 281, correspondingly at the ratchet seat 252. There is also a second ring gear 2522, a first ring gear 281 and Two engagement ring 2522, spindle knob 26 to limit rotation of the latch 28, thereby rotating The button lock 28 limits the rotation of the ratchet seat 252.

In the above embodiment, when it is necessary to adjust the size of the ring belt, the knob outer ring 23 is rotated, and then the knob outer ring 23 drives the ratchet wheel 251 to rotate, and a set of teeth 2511 and the spine between the ratchet wheel 251 and the ratchet seat 252. The mating structure of the ring gear 2521 is unlocked, and the other set of middle teeth 2511 continues to cooperate with its corresponding ratchet ring 2521. The ratchet wheel 251 continues to rotate the knob housing 24 connected thereto, and the knob housing 24 drives the gear meshing with the internal teeth thereof. 27 is rotated about the rotating shaft 26, so that after the gear 27 is rotated, the two racks 13 meshing therewith are relatively moved or moved back to each other to realize the size of the annular belt. During the entire transmission process, the lines of the rotating shaft 26 of the gear 27, the knob housing 24, the ratchet wheel 251, and the knob outer ring 23 are all on the same straight line, that is, both are coaxial with the rotating shaft 26, and in the above transmission process, the knob outer ring 23 is The knob housing 24 is driven by a ratchet wheel 251, and the knob outer ring 23 can be rotated in both directions, and the ring belt diameter is adjusted in the same direction, and the ring belt diameter is reduced in the other direction. It is very convenient, and the knob lock 28 is used for reverse locking. When the knob outer ring 23 rotates in one direction, the knob outer ring 23 is not subjected to the reverse rotation force, and the knob outer ring 23 is rotated. It is easier, and at the same time, after the rotation is stopped, the two teeth 2511 of the ratchet 251 are respectively engaged with the two ratchet rings 2521 of the ratchet seat 252, that is, the ratchet seat 252 limits the rotation in the reverse direction of the ratchet 251, two teeth. The strip 13 does not reversely drive the rotation of the gear 27, the knob housing 24, the ratchet wheel 251 and the knob outer ring 23, so that the two racks 13 can not automatically loosen under the action of a certain external force. Locking structural performance is very good.

Referring to FIGS. 2 to 4, further, the ratchet set 25 further includes a ratchet unlocking plate 253. The knob outer ring 23 directly drives the ratchet unlocking plate 253 to rotate, thereby rotating the ratchet wheel 251 by the ratchet unlocking plate 253, specifically, the ratchet wheel is unlocked. Two positioning posts 2531 are provided on the plate 253, two positioning The column 2531 is centrally symmetric about the axis of rotation 26 of the ratchet unlocking plate 253. Correspondingly, the ratchet 251 includes a ratchet body 2512 and two rotating blocks 2513 rotatable about the ratchet body 2512. The two rotating blocks 2513 are arranged up and down, and two dials are provided. The two teeth 2511 are respectively disposed on the two rotating blocks 2513. Each of the rotating blocks 2513 is further provided with a sliding slot 2514. The two sliding slots 2514 are oppositely disposed, and the two positioning posts 2531 of the ratchet unlocking plate 253 are respectively disposed on the two sliding blocks 2531. Within the chute 2514. In the normal state, the two positioning posts 2531 are respectively located at the middle of the two sliding slots 2514. When the knob outer ring 23 drives the ratchet unlocking plate 253 to rotate, the two positioning posts 2531 also start to rotate around the rotating shaft 26, and two The positioning posts 2531 are respectively slid along the two sliding slots 2514 and are relatively far apart, and when the two positioning posts 2531 are respectively slid to the end positions of the two sliding slots 2514, the positioning post 2531 is difficult to continue to move, and thus the ratchet 251 is The two rotating blocks 2513 generate a force and rotate the two around the ratchet body 2512 at a small angle. The two rotating blocks 2513 simultaneously exert a force on the ratchet body 2512 and drive the ratchet body 2512 to rotate, that is, the ratchet 251 rotates integrally. A positioning post 2531 is adjacent to a corresponding tooth 2511, and the other positioning post 2531 is away from the corresponding tooth 2511. For this reason, the positioning post 2531 exerts a force on the rotating block 2513, so that the tooth 2511 adjacent thereto continues with the ratchet. The ratchet ring 2521 of the seat 252 is engaged, and the other positioning post 2531 is remote from the corresponding tooth 2511, so that the dial 2511 can be rotated around the positioning post 2531. That is, the matching relationship between the finger 2511 and the corresponding ratchet ring 2521 is released, and when the entire rotation process is finished, the rotating outer ring does not generate a rotating force, and the two positioning posts 2531 of the ratchet unlocking plate 253 are along two The sliding grooves 2514 slide and slide to the middle position of the two sliding grooves 2514. At this time, the two teeth 2511 of the ratchet wheel 251 and the two ratchet rings 2521 of the ratchet seat 252 are in a mating state. In the above structure, the two positioning posts 2531 of the ratchet unlocking plate 253 realize the release of the cooperation relationship between the two teeth 2511 and the two ratchet rings 2521 when the knob outer ring 23 rotates, thereby realizing the adjustment of the annular belt diameter. With the locking action of the locking element 22, the structure is simple, the operator Will.

Referring to FIG. 2, for the structure of the ratchet body 2512, a plurality of card slots 2515 extending outwardly are further disposed on the ratchet body 2512, and correspondingly one end portion of the knob housing 24 is provided with a plurality of latching teeth 241, of course, the knob One end of the outer casing 24 is provided with internal teeth and meshes with the gears 27, and the ends of the plurality of latching teeth 241 should be the other side, and the respective latching grooves 2515 of the ratchet body 2512 and the respective latching teeth 241 of the knob housing 24 should be Each of the card slots 2515 and the latching teeth 241 are in one-to-one correspondence with each other and are engaged with each other, that is, the ratchet body 2512 is engaged with one end portion of the knob housing 24 . In this embodiment, the ratchet body 2512 is engaged with the knob housing 24, which can meet the requirement that the ratchet body 2512 rotates to drive the knob housing 24 to rotate synchronously, and the snap connection is detachable for convenient knob implementation. The detachment between the outer casing 24 and the two components of the ratchet 251.

Referring to FIG. 1 , FIG. 3 and FIG. 5 to FIG. 9 , the above embodiment is further optimized. Two tension springs 29 are further disposed on the helmet body 1 , and one ends of the two tension springs 29 are respectively fixed on the two racks 13 . The other end of the helmet body 1 is fixed on the other end. Specifically, the other ends of the two tension springs 29 are fixed on the rear casing 12. Generally, the two tension springs 29 are in a stretched state, and further, in the locking component 22 An elastic member 261 is sleeved on the rotating shaft 26. The elastic member 261 is generally a compression spring. The first ring gear 281 of the knob lock 28 and the second ring gear of the ratchet seat 252 are obtained by the elastic member 261 abutting the knob lock 28 . The 2522 is engaged, and a knob button 242 is disposed on the knob housing 24, and the knob button 242 abuts the knob latch 28 and is also movable along the length of the elastic member 261. Generally, when the helmet is worn on the head position of the human body, the annular belt is often over-tightened due to operation or other reasons. If the outer ring 23 is adjusted by the knob, the adjustment speed may be too slow. In the embodiment, the helmet body 1 is provided with a quick release function, that is, the diameter of the endless belt can be quickly increased, and the specific operation is to directly press the knob button 242, so that the knob button 242 is along the elastic member 261. The length direction moves toward the inside of the knob housing 24, and the knob button 242 abuts the knob latch 28, thereby forcing the knob lock 28 to compress the elastic member 261, and the knob lock 28 moves in the same direction as the knob button 242 along the rotating shaft 26, and the knob locks The engagement state between the first ring gear 281 of the 28 and the second ring gear 2522 of the ratchet seat 252 is released, the locking element 22 is unlocked, and the tension springs 29 are always in tension, at the locking element 22 After the locking function is released, the two tension springs 29 have a tendency to restore the original length and generate a pulling force to cause the two racks 13 to move by themselves, thereby sequentially driving the gear 27, the knob housing 24, the ratchet wheel 251, the ratchet unlocking plate 253 and the knob outer ring 23 in reverse. Rotation, the two tension springs 29 continue to drive the two racks 13 to move by themselves, the diameter of the endless belt can be rapidly increased, and in the process, the ratchet seat 252 has no locking action of the knob lock 28, and the ratchet 251 The function rotates with its coaxiality. In the whole process, just press the knob button 242, the helmet can quickly increase the diameter of the ring belt, and quickly release the pressing action of the ring belt and the human head. The operation is very convenient, and the diameter of the ring belt is increased. After the end, the pressing of the knob button 242 is cancelled. At this time, the elastic member 261 is compressed and rebounded, and the abutting knob 28 is moved along the rotating shaft 26 and the first ring gear 281 of the knob latch 28 and the ratchet seat 252 are The second ring gear 2522 is re-engaged, and the locking element 22 regenerates the locking function. Of course, the knob button 242 is also restored to its original state by the push of the knob lock 28. In the above structure, generally, a flange 262 protruding from the outer peripheral surface thereof is disposed on the rotating shaft 26, and when the elastic member 261 is sleeved on the rotating shaft 26, one end portion thereof abuts against the flange 262, and the other end The portion abuts against the knob lock 28, and the flange 262 allows the elastic member 261 to compress or extend between the flange 262 and the knob lock 28 after the knob button 242 is actuated, thereby implementing the locking member 22. Locking function.

3, FIG. 6, and FIG. 8, specifically, for the connection structure between the knob lock 28 and the rotating shaft 26, the knob lock 28 includes a rotating table 282 and a line extending upward along the rotating shaft 26 of the rotating table 282. a boss 283, the first ring gear 281 is disposed on the rotating table 282 and surrounds the boss 283, the boss 283 has a through groove 284 extending through the boss 283 and the rotating table 282. The rotating shaft 26 can sequentially pass through the rotating table 282 and the boss 283 along the through groove 284, and ring on the inner wall of the through groove 284. An anti-baffle 285 is disposed. The rotating shaft 26 passes through the intermediate portion of the annular abutting plate 285. When the elastic member 261 is sleeved on the rotating shaft 26, one end thereof abuts against the flange 262 of the rotating shaft 26, and the other end thereof abuts against the flange 262. The abutment plate 285 in the through groove 284 passes through the ratchet seat 252, the ratchet wheel 251, and the ratchet unlocking plate 253 in turn for the boss 283 and is engaged with the knob button 242. To optimize the above structure, a knob anti-rotation piece 263 is disposed on the end of the rotating shaft 26, and the anti-rotation piece 263 includes a slider 2631 and two ribs 2632 disposed on the slider 2631, corresponding to the knob lock 28 Two guide rails 286 are disposed on the boss 283. The two slide rails 286 are formed at the end of the boss 283 along the length of the through slot 284. The slider 2631 of the knob anti-rotation piece 263 is located on the boss 283. The two grooves 263 are respectively slidably disposed in the two slides 286 of the boss 283. Under normal circumstances, the two ribs 2632 of the knob anti-rotation piece 263 are located in the two slides 286 of the boss 283, and the ribs 2632 and the slide 286 form a snapping effect. Since the knob anti-rotation piece 263 is disposed on the rotating shaft 26, That is, the rotation of the knob lock 28 is restricted by the knob anti-rotation piece 263, so that the locking element 22 has the function of locking the ratchet seat 252, and the knob lock 28 can also move along the rotation shaft 26 under the action of an external force, that is, when it is required to be fast When the helmet is unwrapped, under the pressure of the knob button 242, the knob lock 28 can move along the rotating shaft 26 to release the meshing action of the first ring gear 281 and the second ring gear 2522.

Referring to FIG. 1, further, a ruler 14 is further disposed at two joints between the front casing 11 and the rear casing 12. The two ends of the ruler 14 are respectively embedded in the front casing 11 and the rear casing. Within body 12. In the present creation, the front housing 11 and the rear housing 12 are connected by two racks 13, and in the process of adjusting the diameter of the endless belt, one of the front housing 11 and the rear housing 12 remains stationary. And the other is moved by the action of the two racks 13, specifically, the rear housing 12 remains stationary, in the adjustment Under the action of the mechanism 2, the two racks 13 drive the front housing 11 to move relative to the rear housing 12. In this embodiment, the ruler 14 is provided at both joints of the front housing 11 and the rear housing 12. When the user adjusts the diameter of the ring belt in the previous use, the ruler 14 can indicate the corresponding size, and in the next use, the ring belt can be directly adjusted to the size indicated by the last ruler 14. It is convenient, and the ruler 14 can also more specifically present the size of the annular band when the user uses it.

Referring to FIG. 9 , further, a cover 15 is further disposed on the helmet body 1 . The cover 15 can function to hide the two racks 13 and the gear 27 . The cover 15 defines an opening 151 and a gear. 27 extends from the opening 151 to engage the internal teeth of the knob housing 24. In this configuration, the engagement between the gear 27 and the two racks 13 and the teeth of the knob housing 24 is separated by the cover 15, that is, the meshing between the two racks 13 and the gear 27 is located inside the cover 15, and the gear The engagement between the inner teeth of the knob housing 24 and the inner teeth of the knob housing 24 is located outside the cover 15, so that interference between the two meshing engagements of the gears 27 can be avoided, and the movement of the two racks 13 can also be protected by the cover 15. It is avoided that external dust or the like enters the inside of the cover 15 to affect the movement of the two racks 13 in the helmet body 1. Generally, the two racks 13 are arranged in parallel and up and down, the top of the gear 27 meshes with one of the racks 13, and the bottom of the gear 27 meshes with the other rack 13. After the gear 27 is rotated, the two racks are simultaneously driven. 13 moves and moves in the opposite direction, thereby achieving relative extension or relative contraction between the two racks 13.

Referring to FIG. 1 , FIG. 2 and FIG. 9 , the present embodiment further provides a helmet type massager, which is to apply the above-mentioned helmet to the field of massagers, which comprises the above-mentioned adjustable helmet, which is arranged on the inner side of the helmet body 1 . A plurality of massage elements 3, through which the massage elements 3 can achieve a massage effect on the human head. Specifically, the rear housing 12 has an upwardly extending cover 121 having an outer shape similar to that of the human head, that is, when the helmet is worn on the human head, the cover 121 is just The human body head is fastened, and the massage component 3 is disposed on the inner side of the cover 121. After being worn, the massage component 3 can directly massage the human head, and under the adjustment of the adjustment mechanism 2, the annular band is changed. The size of the caliber can further change the size of the massaging force of the massage component 3 on the human head to ensure the comfort of the massage. At the same time, after the adjustment is completed, the annular belt diameter is not easy to loose, the massage effect is good, and the massage force can be directly smashed when the massage force is too large. Pressing the knob button 242, the front housing 11 of the helmet body 1 is directly bounced, and the operation is very convenient.

The above description is only for the preferred embodiment of the present invention, and the structure thereof is not limited to the above-listed shapes, and any modifications, equivalent replacements, and improvements made within the spirit and principles of the present invention should be included in the present invention. Within the scope of creation protection.

12‧‧‧ Rear housing

121‧‧‧ Cover

23‧‧‧ knob outer ring

24‧‧‧ knob housing

241‧‧‧ card teeth

25‧‧‧ratchet group

251‧‧‧ ratchet

2511‧‧‧ teeth

2514‧‧ ‧ chute

2515‧‧‧ card slot

252‧‧‧ ratchet seat

2521‧‧‧ ratchet ring

253‧‧‧ratchet unlocking plate

2531‧‧‧Positioning column

3‧‧‧ Massage elements

Claims (10)

An adjustable helmet includes a helmet body, the helmet body includes a front housing and a rear housing, and the two connecting ends of the front housing and the rear housing are connected by two racks, and the two racks have overlapping portions. The front casing, the rear casing and the two racks are arranged to form an endless belt that can be fastened to the head of the human body, and the helmet body is further provided for controlling the relative extension or relative contraction of the two racks to adjust the The adjusting mechanism of the annular belt size is characterized in that the adjusting mechanism comprises a knob element and a locking element, the knob element comprises a rotatable knob outer ring, a knob housing with internal teeth and a ratchet set connected with the knob housing. The ratchet set includes a ratchet wheel driven by the outer ring of the knob and connected to the knob casing, and a ratchet seat matched with the ratchet wheel. The ratchet seat is provided with two sets of ratchet rings arranged up and down and opposite directions, and the ratchet wheel is provided After the outer ring of the knob is rotated, the two teeth of the ratchet ring are respectively arranged on the upper and lower sides, and the locking element comprises a rotating shaft disposed on the helmet body and a gear sleeved on the rotating shaft. And a knob lock sleeveed on the rotating shaft to prevent rotation of the ratchet seat, the gear meshes with the two racks and the internal tooth of the knob housing, and the knob lock is provided with a first ring gear, the ratchet seat A second ring gear meshing with the first ring gear is disposed thereon. The adjustable helmet of claim 1, wherein the ratchet set further comprises a ratchet unlocking plate driven by the outer ring of the knob, the ratchet unlocking plate being provided with two central symmetry about the axis of rotation of the ratchet unlocking plate a positioning post, the ratchet includes a ratchet body and two rotating blocks that are rotatable about the ratchet body and are disposed above and below, and the two teeth are respectively located on the two rotating blocks, and each of the rotating blocks further has a sliding portion The slot and the two positioning posts are respectively slidably disposed in the two slots. The adjustable helmet of claim 2, wherein one end of the knob housing has a plurality of spaced apart latches, and the ratchet body is provided with a plurality of cards extending outwardly for engaging the respective latches The slot, each of the latches has a one-to-one correspondence with each of the slots. The adjustable helmet according to claim 1, further comprising two tension springs, wherein the two springs are One end is fixed on the helmet body, and the other end is respectively fixed on the two racks, and the shaft is further sleeved with a spring for abutting the knob lock to mesh the first ring gear with the second ring gear. The knob housing is further provided with a knob button that is movable along the length of the elastic member and abuts the knob lock. The adjustable helmet according to claim 4, wherein the rotating shaft has a flange protruding from an outer peripheral surface thereof, the elastic member is sleeved on the rotating shaft and one end abuts against the flange, the elastic member The other end is against the knob lock. The adjustable helmet of claim 4, wherein the knob lock comprises a rotary table and a boss extending upward along an axis of rotation of the rotary table, the first ring gear being located on the rotary table and surrounding the boss The boss has a through slot for the rotating shaft, the through slot extends through the boss and the rotating table and has an abutting baffle disposed along the inner wall of the through slot, and the other end of the elastic member abuts against the abutting plate The boss sequentially passes through the ratchet seat and the ratchet and is engaged with the knob button. The adjustable helmet of claim 6, wherein the end of the rotating shaft is further provided with a knob anti-rotation piece, and two ends extending along the length of the through groove are provided at the end of the boss The anti-rotation piece of the knob includes a slider disposed in the through slot and movable along the through slot, and two ribs disposed on the slider and respectively slidably disposed in the two sliding passages. The adjustable helmet according to claim 1, wherein a ruler is further disposed between the two joints of the front casing and the rear casing, and both ends of each of the rulers are respectively embedded in the front Inside the housing and the rear housing. The adjustable helmet of any one of claims 1 to 8, wherein the helmet body is further provided with a cover for concealing the two racks, the cover is provided with an opening, and the gear extends along the opening And engage with the internal teeth of the knob housing. A helmet type massager comprising the adjustable helmet of any one of claims 1 to 9, wherein a massage assembly for a human head massage is provided inside the helmet body.