CN203801842U - Mechanism for adjusting tightness degree of safety helmet - Google Patents
Mechanism for adjusting tightness degree of safety helmet Download PDFInfo
- Publication number
- CN203801842U CN203801842U CN201420165456.9U CN201420165456U CN203801842U CN 203801842 U CN203801842 U CN 203801842U CN 201420165456 U CN201420165456 U CN 201420165456U CN 203801842 U CN203801842 U CN 203801842U
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- China
- Prior art keywords
- gear
- drawstring
- receipts
- plug
- knob
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- Legal status (The legal status 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 status listed.)
- Expired - Lifetime
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- 230000033001 locomotion Effects 0.000 claims description 29
- 230000013011 mating Effects 0.000 claims description 18
- 238000012856 packing Methods 0.000 claims description 8
- 230000003247 decreasing effect Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 8
- 230000000694 effects Effects 0.000 description 6
- 230000003044 adaptive effect Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
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- Helmets And Other Head Coverings (AREA)
Abstract
The utility model provides a mechanism for adjusting the tightness degree of a safety helmet. The mechanism comprises a first drawing belt, a second drawing belt, an adjusting gear, a rotary knob and a casing, wherein the first drawing belt is provided with first racks; the second drawing belt is provided with second racks; the casing is provided with a drawing channel and inserting holes allowing the first drawing belt and the second drawing belt to be inserted; non-return bulge parts are arranged on the inner walls of the inserting holes; the adjusting gear is provided with a non-return elastic wall which is provided with opposite limit bulges and wall collecting hooks; and the rotary knob is provided with hook collecting blocks which are provided with first matching surfaces, the wall collecting hooks are provided with second matching surfaces, and a distance between each second matching surface and an axis of the gear is gradually increased in the direction facing the inner sides of the wall collecting hooks. The rotary knob rotates to drive the gear to rotate, the gear rotates in different directions to drive a distance between a first mounting hole and a second mounting hole to be increased or decreased, and the adjustment is realized.
Description
Technical field
The utility model relates to the safety in production helmet, more precisely, is a kind of governor motion that regulates safety cap degree of tightness.
Background technology
The governor motion of traditional safety cap degree of tightness relies on manpower to regulate the degree of tightness of drawstring, when regulating, safety cap need to be taken off, and this is very inconvenient, and is unfavorable for safety in production.
Utility model content
The purpose of this utility model is the governor motion that proposes a kind of safety cap degree of tightness, eliminates inconvenient problem with use in prior art.
According to an aspect of the present utility model, a kind of governor motion of safety cap degree of tightness is provided, comprise the first drawstring, the second drawstring, adjusting gear, knob and housing;
The first drawstring is provided with article one groove, and article one groove arranges along the first drawstring length direction, and the wherein trough rim in two trough rims that article one groove distributes along the first drawstring length direction is provided with the first tooth bar;
The second drawstring is provided with second groove, and second groove arranges along the second drawstring length direction, and the wherein trough rim in two trough rims that second groove distributes along the second drawstring length direction is provided with the second tooth bar;
Housing is provided with pull passage and positioning key mount pad, the first drawstring and the second drawstring are plugged in pull passage, and positioning key mount pad is provided with plug-in opening, and plug-in opening is circular, plug-in opening inwall is provided with a plurality of non-return protuberances, and a plurality of non-return protuberances are interior circumferentially uniform plug-in opening;
Adjusting gear comprises gear and is coaxially fixed on the Elastic Teeth wheel seat of gear, Elastic Teeth wheel seat is provided with non-return elastic wall, it is spacing prominent that non-return elastic wall is provided with subtend in the side away from gear, non-return elastic wall is provided with receipts wall hook in the side towards gear, adjusting gear is coaxially plugged in positioning key mount pad, gear is plugged in article one groove and second groove, the first tooth bar and the second tooth bar are positioned at the both sides of gear, when non-return elastic wall is not subject to the situation of external force, between the axis of the spacing prominent and gear of subtend, distance is greater than the gap of the axis of non-return protuberance and gear;
Knob is provided with and coordinates the receipts hooked scarf of receiving wall hook, receive hooked scarf and be arranged at receipts wall hook inner side, receiving hooked scarf is the first mating surface towards a side of the axis of gear, the side that receipts wall hook props up the first mating surface is the second mating surface, in the direction towards receipts wall hook inner side, the distance of the axis of the second mating surface and gear progressively increases.
After above-mentioned parts assembling, turning knob can rotate by driven gear, and the first tooth bar and the second tooth bar are separately positioned on the both sides of gear, and gear drives the distance between the first installing hole and the second installing hole increase or reduce in the rotation of different directions, reaches adjusting.
And said structure is when turning knob not, non-return elastic wall is not subject in the situation from the effect of the receipts hooked scarf of knob, because distance between the axis of the spacing prominent and gear of subtend is greater than the gap of the axis of non-return protuberance and gear, therefore, subtend is spacing prominent props up non-return protuberance and stuck, that is,, under the effect not being subject to from knob, can there is not relative motion in the first tooth bar and the second tooth bar.
The receipts hooked scarf of knob shows when receiving in the process of hooked scarf lateral movement in receiving wall hook the effect of non-return elastic wall, receive the first mating surface of hooked scarf along the second mating surface motion of receiving wall hook, in the direction towards receipts wall hook inner side, the distance of the axis of the second mating surface and gear progressively increases, receive hooked scarf and produce the power to the axis of gear to receiving wall hook, and cause the deformation of non-return elastic wall, until between the axis of subtend spacing prominent and gear, distance is less than the gap of the axis of non-return protuberance and gear, and then knob can drive adjusting gear to rotate.
When receiving hooked scarf in receiving the process of wall hook movement outside, non-return elastic wall outer wall sawtooth design, the pressure that deformation non-return elastic wall gives at non-return protuberance outer surface and do adaptive deformation, and then do not affect the rotation of gear.
In some embodiments, gear axis is provided with the first perforate, and knob is provided with the turn axle of plug-in mounting the first perforate.Improve mechanical stability of the present utility model.
In some embodiments, housing is provided with the second perforate, and turn axle is plugged in the second perforate.Further improve mechanical stability of the present utility model.
In some embodiments, the utility model also comprises tight lock packing ring, tightly locks one end that packing ring is arranged at turn axle, tightly locks the diameter that washer outer diameter is greater than the second perforate.Another step improves mechanical stability of the present utility model.
In some embodiments, Elastic Teeth wheel seat is provided with and coordinates the locating hole of receiving hooked scarf, and the length of locating hole is greater than the length of receiving hooked scarf.Promote on the basis of mechanical stability of the present utility model, do not affect the relative motion of receiving between hooked scarf and Elastic Teeth wheel seat.
In some embodiments, knob be shaped as disc, disc knob is provided with breach, what the number of breach was three, three breach at knob is outer circumferentially uniform.Meet ergonomics design, person's more convenient to use actuating.
In some embodiments, the utility model also comprises comfort zone, and housing is set to the arc of indent away from a side of positioning key mount pad, and housing is fixed on respectively away from a side of arc positioning key mount pad in the both ends of comfort zone.In use procedure, comfort zone is towards human body, and comfort zone produces elasticity under the cooperation of the housing of arc, has improved the comfortableness of safety cap itself.
In some embodiments, comfort zone is provided with plug-in opening, and housing is provided with away from a side of positioning key mount pad the plug-in mounting tooth that coordinates plug-in opening.The utility model also provides a kind of convenient installation method, easily implements.
Accompanying drawing explanation
The first drawstring of governor motion and the structural representation of the second drawstring of the safety cap degree of tightness of a kind of embodiment that Fig. 1 provides for the utility model;
The structural representation of the housing of the governor motion of the safety cap degree of tightness of a kind of embodiment that Fig. 2 provides for the utility model;
Fig. 3 is that the A of the housing shown in Fig. 2 is to view;
Fig. 4 is the B-B sectional view of the housing shown in Fig. 3;
The structural representation of the adjusting gear of the governor motion of the safety cap degree of tightness of a kind of embodiment that Fig. 5 provides for the utility model;
Fig. 6 is the C-C sectional view of the adjusting gear of the safety cap degree of tightness shown in Fig. 5;
The structural representation of the knob of the governor motion of the safety cap degree of tightness of a kind of embodiment that Fig. 7 provides for the utility model;
Fig. 8 is that the D of the knob shown in Fig. 7 is to view;
The structural representation of the governor motion of the safety cap degree of tightness of a kind of embodiment that Fig. 9 provides for the utility model;
Figure 10 be the housing shown in Fig. 2 A to opposite direction on view;
The stereogram of the comfort zone of the governor motion of the safety cap degree of tightness of a kind of embodiment that Figure 11 provides for the utility model.
The specific embodiment
As shown in Fig. 1～9, according to an aspect of the present utility model, provide a kind of governor motion of safety cap degree of tightness, comprise the first drawstring 1, the second drawstring 2, adjusting gear 3, knob 4 and housing 5.
As shown in Figure 1, the first drawstring 1 is provided with article one groove 11, and article one groove 11 is along the first drawstring 1 length direction setting, and the wherein trough rim in two trough rims that article one groove 11 distributes along the first drawstring 1 length direction is provided with the first tooth bar 12.The first drawstring 1 end is provided with the first installing hole 13.
The second drawstring 2 is provided with second groove 21, and second groove 21 is along the second drawstring 2 length direction settings, and the wherein trough rim in two trough rims that second groove 21 distributes along the second drawstring 2 length directions is provided with the second tooth bar 22.The second drawstring 2 ends are provided with the second installing hole 23.
As shown in Fig. 2～4, housing 5 is provided with pull passage 51 and positioning key mount pad 52, the first drawstring 1 and the second drawstring 2 are plugged in pull passage 51, positioning key mount pad 52 is provided with plug-in opening 53, plug-in opening 53 is circular, plug-in opening 53 inwalls are provided with a plurality of non-return protuberances 54, and a plurality of non-return protuberances 54 are interior circumferentially uniform plug-in opening 53, and non-return protuberance 54 comprises and seamlessly transits side 55 and limiting side 56.
As shown in Fig. 5～6, adjusting gear 3 comprises gear 31 and is coaxially fixed on the Elastic Teeth wheel seat 32 of gear 31, Elastic Teeth wheel seat 32 is provided with non-return elastic wall 34, non-return elastic wall 34 is provided with subtend spacing prominent 36 in the side away from gear 31, non-return elastic wall 34 is provided with and receives wall hook 35 in the side towards gear 31, adjusting gear 3 is coaxially plugged in positioning key mount pad 52, gear 31 is plugged in article one groove 11 and second groove 21, the first tooth bar 12 and the second tooth bar 22 are positioned at the both sides of gear 31, when non-return elastic wall 34 is not subject to the situation of external force, between subtend spacing prominent 36 and the axis of gear 31, distance is greater than the gap of the axis of non-return protuberance 54 and gear 31.
As shown in Fig. 7～8, knob 4 is provided with and coordinates the receipts hooked scarf 42 of receiving wall hook 35, receive hooked scarf 42 and be arranged at receipts wall hook 35 inner sides, receiving hooked scarf 42 is the first mating surface 43 towards a side of the axis of gear 31, the side that receipts wall hook 35 props up the first mating surface 43 is the second mating surface 37, in the direction towards receipts wall hook 35 inner sides, the second mating surface 37 progressively increases with the distance of the axis of gear 31.
Above-mentioned parts are according to after assembling shown in Fig. 9, turning knob 4 can rotate by driven gear 31, the first tooth bar 12 and the second tooth bar 22 are separately positioned on the both sides of gear 31, gear 31 drives the distance between the first installing hole 13 and the second installing hole 23 increase or reduce in the rotation of different directions, reaches adjusting.And said structure is when turning knob 4 not, non-return elastic wall 34 is not subject in the situation from the effect of the receipts hooked scarf 42 of knob 4, because distance between subtend spacing prominent 36 and the axis of gear 31 is greater than the gap of the axis of non-return protuberance 54 and gear 31, therefore, subtend spacing prominent 36 props up non-return protuberance 54 and stuck, that is,, under the effect not being subject to from knob 4, can there is not relative motion in the first tooth bar 12 and the second tooth bar 22.
The effect of 42 pairs of non-return elastic walls 34 of receipts hooked scarf of knob 4 shows when receiving hooked scarf 42 in receiving the process of wall hook 35 interior lateral movements, receive the first mating surface 43 of hooked scarf 4 along second mating surface 37 motions of receiving wall hook 35, in the direction towards receipts wall hook 35 inner sides, the second mating surface 37 progressively increases with the distance of the axis of gear 31, receive 4 pairs of receipts wall hooks of hooked scarf 35 and produce the power to the axis of gear 31, and cause the deformation of non-return elastic wall 34, until distance is less than the gap of the axis of non-return protuberance 54 and gear 31 between the axis of subtend spacing prominent 36 and gear 31, and then knob 4 can drive adjusting gear 3 rotations.
When receiving hooked scarf 42 in receiving the process of wall hook 35 movement outside, non-return elastic wall 34 outer wall sawtooth design, the pressure that deformation non-return elastic wall 34 gives at non-return protuberance 54 outer surfaces and do adaptive deformation, and then do not affect the rotation of gear 3.
In order further to improve mechanical stability of the present utility model.Gear 31 axle center are provided with the first perforate 38, and knob 4 is provided with the turn axle 44 of plug-in mounting the first perforate 38.Housing 5 is provided with the second perforate 57, and turn axle 44 is plugged in the second perforate 57.The utility model can also comprise tight lock packing ring 6, tightly locks one end that packing ring 6 is arranged at turn axle 44, tightly locks the diameter that packing ring 6 external diameters are greater than the second perforate 57.
For further improving mechanical stability of the present utility model.Elastic Teeth wheel seat 32 is provided with and coordinates the locating hole 33 of receiving hooked scarf 42, and the length of locating hole 33 is greater than the length of receiving hooked scarf 42.
In addition, knob 4 be shaped as disc, disc knob 4 is provided with breach 45, what the number of breach 45 was three, three breach 45 at knob 4 is outer circumferentially uniform.Meet ergonomics design, person's more convenient to use actuating.
The utility model can also comprise comfort zone 7, and housing 5 is set to the arc of indent away from a side of positioning key mount pad 52, and housing 5 is fixed on respectively away from a side of arc positioning key mount pad 52 in the both ends of comfort zone 7.With in process, comfort zone 7 is towards human body, and comfort zone 7 produces elasticity under the cooperation of the housing 5 of arc, has improved the comfortableness of safety cap itself.
In this enforcement, comfort zone 7 adopts plug-in mounting to fix with housing 5, and as shown in figure 11, in comfort zone, 7 are provided with plug-in opening 71, and as shown in figure 10, housing 5 is provided with away from a side of positioning key mount pad 52 the plug-in mounting tooth 58 that coordinates plug-in opening 71.Installation method is very convenient, easily implements.
The above is only optimal way of the present utility model; it should be pointed out that to those skilled in the art, do not departing under the prerequisite of the utility model creation design; can also make some similar distortion and improvement, within these also should be considered as protection domain of the present utility model.
Claims (8)
1. the governor motion of safety cap degree of tightness, is characterized in that, comprises the first drawstring (1), the second drawstring (2), adjusting gear (3), knob (4) and housing (5);
Described the first drawstring (1) is provided with article one groove (11), described article one groove (11) is along described the first drawstring (1) length direction setting, and the wherein trough rim in two trough rims that described article one groove (11) distributes along described the first drawstring (1) length direction is provided with the first tooth bar (12);
Described the second drawstring (2) is provided with second groove (21), described second groove (21) is along described the second drawstring (2) length direction setting, and the wherein trough rim in two trough rims that described second groove (21) distributes along described the second drawstring (2) length direction is provided with the second tooth bar (22);
Described housing (5) is provided with pull passage (51) and positioning key mount pad (52), described the first drawstring (1) and the second drawstring (2) are plugged in described pull passage (51), described positioning key mount pad (52) is provided with plug-in opening (53), described plug-in opening (53) is circular, described plug-in opening (53) inwall is provided with a plurality of non-return protuberances (54), and a plurality of described non-return protuberances (54) are interior circumferentially uniform described plug-in opening (53);
Described adjusting gear (3) comprises gear (31) and is coaxially fixed on the Elastic Teeth wheel seat (32) of described gear (31), described Elastic Teeth wheel seat (32) is provided with non-return elastic wall (34), described non-return elastic wall (34) is provided with subtend spacing prominent (36) in the side away from described gear (31), described non-return elastic wall (34) is provided with and receives wall hook (35) in the side towards described gear (31), described adjusting gear (3) is coaxially plugged in described positioning key mount pad (52), described gear (31) is plugged in described article one groove (11) and described second groove (21), described the first tooth bar (12) and the second tooth bar (22) are positioned at the both sides of described gear (31), when described non-return elastic wall (34) is not subject to the situation of external force, between described subtend spacing prominent (36) and the axis of described gear (31), distance is greater than the gap of the axis of described non-return protuberance (54) and described gear (31),
Described knob (4) is provided with the receipts hooked scarf (42) that coordinates described receipts wall hook (35), described receipts hooked scarf (42) is arranged at described receipts wall hook (35) inner side, described receipts hooked scarf (42) is the first mating surface (43) towards a side of the axis of described gear (31), the side that described receipts wall hook (35) props up described the first mating surface (43) is the second mating surface (37), in the direction towards described receipts wall hook (35) inner side, described the second mating surface (37) progressively increases with the distance of the axis of described gear (31).
2. the governor motion of safety cap degree of tightness according to claim 1, is characterized in that: described gear (31) axle center is provided with the first perforate (38), and described knob (4) is provided with the turn axle (44) of the first perforate (38) described in plug-in mounting.
3. the governor motion of safety cap degree of tightness according to claim 2, is characterized in that: described housing (5) is provided with the second perforate (57), and described turn axle (44) is plugged in described the second perforate (57).
4. the governor motion of safety cap degree of tightness according to claim 3, it is characterized in that: also comprise tight lock packing ring (6), described tight lock packing ring (6) is arranged at one end of described turn axle (44), and described tight lock packing ring (6) external diameter is greater than the diameter of described the second perforate (57).
5. the governor motion of safety cap degree of tightness according to claim 1, it is characterized in that: described Elastic Teeth wheel seat (32) is provided with the locating hole (33) that coordinates described receipts hooked scarf (42), and the length of described locating hole (33) is greater than the length of described receipts hooked scarf (42).
6. according to the governor motion of the safety cap degree of tightness described in claim 2～4 any one, it is characterized in that: described knob (4) be shaped as disc, knob described in disc (4) is provided with breach (45), what the number of described breach (45) was three, three described breach (45) at described knob (4) is outer circumferentially uniform.
7. according to the governor motion of the safety cap degree of tightness described in claim 1～5 any one, it is characterized in that: also comprise comfort zone (7), described housing (5) is set to the arc of indent away from a side of described positioning key mount pad (52), described housing (5) is fixed on respectively away from a side of arc positioning key mount pad (52) in the both ends of described comfort zone (7).
8. the governor motion of safety cap degree of tightness according to claim 7, it is characterized in that: described comfort zone (7) are provided with plug-in opening (71), described housing (5) is provided with away from a side of described positioning key mount pad (52) the plug-in mounting tooth (58) that coordinates described plug-in opening (71).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420165456.9U CN203801842U (en) | 2014-04-04 | 2014-04-04 | Mechanism for adjusting tightness degree of safety helmet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420165456.9U CN203801842U (en) | 2014-04-04 | 2014-04-04 | Mechanism for adjusting tightness degree of safety helmet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203801842U true CN203801842U (en) | 2014-09-03 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420165456.9U Expired - Lifetime CN203801842U (en) | 2014-04-04 | 2014-04-04 | Mechanism for adjusting tightness degree of safety helmet |
Country Status (1)
| Country | Link |
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| CN (1) | CN203801842U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106136416A (en) * | 2016-08-03 | 2016-11-23 | 苏州倍声声学技术有限公司 | A kind of flexible screen-type can be with the wearing helmet of global location |
| CN106820392A (en) * | 2016-12-31 | 2017-06-13 | 广州市勇源日用品工业有限公司 | One kind can automatically adjust protective helmet |
| WO2017197896A1 (en) * | 2016-05-19 | 2017-11-23 | 青岛歌尔声学科技有限公司 | Wearable product belt connection structure |
| WO2018058276A1 (en) * | 2016-09-27 | 2018-04-05 | 深圳市大疆创新科技有限公司 | Headband-adjusting device for video glasses, headband, and video glasses |
| CN108447460A (en) * | 2018-04-09 | 2018-08-24 | 尹洪波 | A kind of tension adjustable is quickly de- to wear guitar bass finger ring justice first |
| CN109380817A (en) * | 2017-08-02 | 2019-02-26 | 宏碁股份有限公司 | Frenulum adjusts structure |
-
2014
- 2014-04-04 CN CN201420165456.9U patent/CN203801842U/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017197896A1 (en) * | 2016-05-19 | 2017-11-23 | 青岛歌尔声学科技有限公司 | Wearable product belt connection structure |
| US10561208B2 (en) | 2016-05-19 | 2020-02-18 | Qingdao Goertek Technology Co., Ltd. | Wearable product belt connection structure |
| CN106136416A (en) * | 2016-08-03 | 2016-11-23 | 苏州倍声声学技术有限公司 | A kind of flexible screen-type can be with the wearing helmet of global location |
| WO2018058276A1 (en) * | 2016-09-27 | 2018-04-05 | 深圳市大疆创新科技有限公司 | Headband-adjusting device for video glasses, headband, and video glasses |
| US10915141B2 (en) | 2016-09-27 | 2021-02-09 | SZ DJI Technology Co., Ltd. | Headband adjusting device for wearable device, headband, and wearable device |
| CN106820392A (en) * | 2016-12-31 | 2017-06-13 | 广州市勇源日用品工业有限公司 | One kind can automatically adjust protective helmet |
| CN109380817A (en) * | 2017-08-02 | 2019-02-26 | 宏碁股份有限公司 | Frenulum adjusts structure |
| CN108447460A (en) * | 2018-04-09 | 2018-08-24 | 尹洪波 | A kind of tension adjustable is quickly de- to wear guitar bass finger ring justice first |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140903 |
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| CX01 | Expiry of patent term |