CN208192299U - A kind of head circumference adjustment mechanism of the helmet - Google Patents
A kind of head circumference adjustment mechanism of the helmet Download PDFInfo
- Publication number
- CN208192299U CN208192299U CN201721663633.6U CN201721663633U CN208192299U CN 208192299 U CN208192299 U CN 208192299U CN 201721663633 U CN201721663633 U CN 201721663633U CN 208192299 U CN208192299 U CN 208192299U
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- China
- Prior art keywords
- runner
- adjuster
- ratchet
- helmet
- adjustment
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- Helmets And Other Head Coverings (AREA)
Abstract
A kind of head circumference adjustment mechanism of the helmet, including adjusting band, adjustment band side is equipped with adjuster bottom case, adjuster bottom case is connected by screw to after fastening with adjuster face-piece, runner is equipped in the adjuster face-piece, runner includes gear and ratchet, wherein the lower end of runner is gear, the upper end of gear is ratchet, the rack gear of runner and adjustment with one end matches, and knob connect knob by rigging screw with adjuster bottom case, and the runner and adjuster face-piece form ratchet mechanism, it rotates freely in the clockwise direction, it is self-locking in the counterclockwise direction.The utility model makes the length for adjusting band change by rotating knob, achieve the purpose that adjust head circumference perimeter, singlehanded adjustment is realized when the helmet is worn on head, the function of retaining can be reached in the case where not rotating knob simultaneously, structure is simple, reliable, and convenience when wearing the helmet improves, reliability enhances, it is convenient to exchange.
Description
Technical field
The utility model relates to a kind of head circumference adjustment mechanisms of helmet.
Technical background
The helmet is the protector for protecting head, and ancient Chinese is known as helmet, first armour, pocket an ancient pot or head an ancient pot, mainly by shell, lining
In and suspension arrangement three parts composition.The helmet can be divided into bulletproof halmet, fire helmet, the racing car helmet, building peace according to purposes
The full helmet, electric power safety helmet etc., but no matter which kind of helmet, can be convenient and efficient, stable be all helmets with head is ridden over
Common objective requirement.
The helmet used in China is mostly that ribbon or plastic cap item are adjusted to the adjustment mode of head circumference when wearing at present
It is whole, by adjusting the length of ribbon or plastic cap item repeatedly before wearing, is tried on repeatedly to achieve the purpose that adjust head circumference, adjusted
Perfect square formula is very cumbersome.In recent years, also there is the appearance of part head circumference adjustment structure, can satisfy after the helmet is worn on head,
By the singlehanded adjustment for carrying out head circumference, substantially increase the convenience of adjustment, but after wearing due to no self-locking property or
Self-locking not firm, under the action of reaction force, cap, which encloses, to become larger, so that the stability worn reduces.
Utility model content
Its purpose of the utility model, which is that, provides a kind of head circumference adjustment mechanism of helmet, to adjust by rotating knob
The length of band changes, and achievees the purpose that adjust head circumference perimeter, singlehanded adjustment is realized when the helmet is worn on head, simultaneously
The function of retaining can be reached in the case where not rotating knob, structure is simple, reliable, and convenience when wearing the helmet mentions
High, reliability enhancing, exchange are convenient.
It adopts the technical scheme that achieve the above object, a kind of head circumference adjustment mechanism of the helmet, including adjustment band, institute
It states adjustment band side and is equipped with adjuster bottom case, adjuster bottom case is connected by screw to after fastening with adjuster face-piece, the adjustment
Runner is equipped in device face-piece, runner includes gear and ratchet, and wherein the lower end of runner is gear, and the upper end of gear is ratchet, is turned
Rack gear of the wheel with adjustment with one end matches, and knob connect knob, the runner and adjustment by rigging screw with adjuster bottom case
Device face-piece forms ratchet mechanism, rotates freely in the clockwise direction, self-locking in the counterclockwise direction.
Beneficial effect
The utility model has the following advantages that compared with prior art.
The utility model has the advantages that reaching steady adjustment by rotating wheel mechanisms that；By ratchet mechanism, realize self-locking；It is logical
Eccentric stiffener is crossed, changing mechanism state meets adjustment requirement.The convenience and reliability for improving helmet adjustment system, so that head
Helmet, which is worn, to be stablized.
Detailed description of the invention
The utility model is described in further detail with reference to the accompanying drawing.
Fig. 1 is the assembling structure schematic diagram of the utility model；
Fig. 2 is the adjuster face-piece schematic diagram of the utility model；
Fig. 3 is the knob schematic diagram of the utility model；
Fig. 4 is the screening nail catcher shell schematic diagram of the utility model；
Fig. 5 is the runner schematic diagram of the utility model；
Fig. 6 is the adjuster bottom case schematic diagram of the utility model；
Fig. 7 is the adjustment band schematic diagram of the utility model；
Fig. 8 is the knob and runner assembling schematic diagram of the utility model；
Fig. 9 is the adjuster face-piece and runner assembling schematic diagram of the utility model；
Figure 10 is the runner and adjustment band assembling schematic diagram of the utility model；
As shown in the figure: adjuster face-piece 1, knob 2, rigging screw 3 hide nail catcher 4, runner 5, adjuster bottom case 6, adjust
Whole band 7.
Specific embodiment
A kind of head circumference adjustment mechanism of the helmet, including adjustment band 7, as shown in Fig. 1-Figure 10,7 side of adjustment band is equipped with
Adjuster bottom case 6, adjuster bottom case 6 are connected by screw to after fastening with adjuster face-piece 1, are equipped in the adjuster face-piece 1
Runner 5, runner 5 include gear and ratchet, and wherein the lower end of runner 5 is gear, and the upper end of gear is ratchet, runner 5 and adjustment
Rack gear with 7 one end matches, and knob 2 connect knob 2, the runner 5 and adjuster by rigging screw 3 with adjuster bottom case 6
Face-piece 1 forms ratchet mechanism, rotates freely in the clockwise direction, self-locking in the counterclockwise direction.
The knob 2, which is equipped with, hides nail catcher 4, hides nail catcher 4 and is placed in 3 upper end of rigging screw and the fastening of knob 2.
Embodiment
Knob 2 rotates clockwise it by the ratchet fixing end that the cylinder protruded stirs runner 5；The knob 2 passes through
The ratchet free end that the cylinder of protrusion stirs runner 5 makes ratchet self-locking function disappear, and reaches rotation counterclockwise.
The ratchet of runner 5 is eccentric structure, and when knob 2 rotates counterclockwise, the cylinder of protrusion stirs the free end of ratchet
Eccentric position becomes concentric structure so that receiving in ratchet, and self-locking function releases.
The structure of runner 5 is made of gear and ratchet, and wherein lower end is gear, and upper end is ratchet.Runner 5 is put into adjuster
In the pilot hole of face-piece 1, gear one end is put into inside, and ratchet and adjuster face-piece ratchet portions match.
Adjustment 7 both ends of band are rack structure, while design has the straight line step of interworking, are mainly used for being oriented to and cooperate.Dress
Timing adjustment 7 both ends section of rack of band matches with the runner 5 being exposed to inside adjuster face-piece 1, while straight line step matches, and makes
Band must be adjusted circlewise.
Adjuster bottom case 6 has the installation counterbore of rigging screw 3.The cylinder that adjuster bottom case 6 protrudes passes through the logical of runner 5
Hole matches with adjuster face-piece 1, and is connected and fixed by rigging screw 3.
Knob 2 is set there are four the cylinder protruded, and knob 2 is buckled on the ratchet cylinder step of adjuster face-piece, four protrusions
Cylinder be located at fixing end and the free end of 5 ratchet of runner, pass through rigging screw 3 and cylinder that adjuster bottom case 6 protrudes
It is connected.
Nail catcher 4 is hidden by transition fit, is buckled at the circular hole at 2 center of knob.
Concrete operations mode are as follows:
Runner 5 is put into the pilot hole of adjuster face-piece 1, and gear one end is put into inside, ratchet and adjuster face-piece ratchet
Part matches, and adjustment 7 both ends section of rack of band matches with the runner 5 that is exposed to adjuster face-piece 1 inside so that adjust band 7 at
Ring-type, the cylinder that adjuster bottom case 6 protrudes pass through the through-hole of runner 5, match with adjuster face-piece 1, and are connected with rigging screw 3
Fixed, knob 2 is buckled on the ratchet cylinder step of adjuster face-piece, and the cylinder of four protrusions is located at consolidating for 5 ratchet of runner
Fixed end and free end are connected by rigging screw 3 with the cylinder that adjuster bottom case 6 protrudes, and are hidden nail catcher 4 and are buckled in 2 center of knob
At circular hole, assembly is completed.
When knob 2 is by clockwise torque, a pair of of protrusion cylinder on knob 2 stirs 5 ratchet portions of runner
Fixing end, the generation clockwise rotation of runner 5, under the drive of rack-and-pinion, adjustment 7 effective length of band shorten, head
Enclose reduction.
When knob 2 is by anticlockwise torque, a pair of of cylinder on knob 2 close to ratchet fixing end is not made
With a pair of of protrusion cylinder of close ratchet free end stirs the free end of ratchet, since cylinder and ratchet free end exist centainly
Bias under the variation effect of eccentric distance, received in ratchet when rotating counterclockwise, it is de- with the ratchet of adjuster face-piece 1
It opens, the failure of ratchet self-locking mechanism, under rack-and-pinion effect, adjusts 7 effective length of band, head circumference increases.
After the helmet, which is worn, to be stablized, adjustment band is firmly bound round on head, and head can generate reaction force to adjustment band.Anti-
Under the action of active force, the rack drives gear of adjustment band 7 rotates counterclockwise, at this point, ratchet is adjusted the ratchet top of device face-piece 1
Extremely, it prevents gear from rotating counterclockwise, occurs self-locking.
Claims (2)
1. a kind of head circumference adjustment mechanism of helmet, including adjustment band (7), which is characterized in that the adjustment band (7) side, which is equipped with, adjusts
Whole device bottom case (6), adjuster bottom case (6) are connected by screw to after fastening with adjuster face-piece (1), the adjuster face-piece (1)
Interior to be equipped with runner (5), runner (5) includes gear and ratchet, and wherein the lower end of runner (5) is gear, and the upper end of gear is ratchet,
Runner (5) and the rack gear of adjustment band (7) one end match, and knob (2) connect rotation by rigging screw (3) with adjuster bottom case (6)
Button (2), the runner (5) and adjuster face-piece (1) form ratchet mechanism, rotate freely in the clockwise direction, in side counterclockwise
To self-locking.
2. a kind of head circumference adjustment mechanism of helmet according to claim 1, which is characterized in that the knob (2) is equipped with
It hides nail catcher (4), hides nail catcher (4) and be placed in rigging screw (3) upper end and knob (2) fastening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721663633.6U CN208192299U (en) | 2017-12-04 | 2017-12-04 | A kind of head circumference adjustment mechanism of the helmet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721663633.6U CN208192299U (en) | 2017-12-04 | 2017-12-04 | A kind of head circumference adjustment mechanism of the helmet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208192299U true CN208192299U (en) | 2018-12-07 |
Family
ID=64490173
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721663633.6U Active CN208192299U (en) | 2017-12-04 | 2017-12-04 | A kind of head circumference adjustment mechanism of the helmet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208192299U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020134396A1 (en) * | 2018-12-25 | 2020-07-02 | 深圳光启超材料技术有限公司 | Head lock and head-mounted helmet body |
-
2017
- 2017-12-04 CN CN201721663633.6U patent/CN208192299U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020134396A1 (en) * | 2018-12-25 | 2020-07-02 | 深圳光启超材料技术有限公司 | Head lock and head-mounted helmet body |
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