CN2636650Y - Safety hat hoop regulating device - Google Patents
Safety hat hoop regulating device Download PDFInfo
- Publication number
- CN2636650Y CN2636650Y CN 03225847 CN03225847U CN2636650Y CN 2636650 Y CN2636650 Y CN 2636650Y CN 03225847 CN03225847 CN 03225847 CN 03225847 U CN03225847 U CN 03225847U CN 2636650 Y CN2636650 Y CN 2636650Y
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- CN
- China
- Prior art keywords
- knob
- cover plate
- tooth
- gear
- travelling gear
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- Expired - Fee Related
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Abstract
The utility model discloses a safety helmet hoop adjusting device, which comprises two helmet ribbons at the back of the helmet hoop, an inner cover plate, an outer cover plate, a knob, a locking gear, an elastic component and a transmission gear, wherein two strip-shaped holes with single-side racks are arranged on the two helmet ribbons, and the transmission gear is meshed with the rack on the helmet ribbon; the outer tooth of the locking gear are meshed with the tooth on the axle seat inner wall of the outer cover plate, and the inner tooth of the locking gear is meshed with the outer of the transmission gear; the fit between the knob and the transmission gear is a tight fit which can not be rotated oppositely; a limiting flange for preventing the locking gear from breaking off outwards is arranged at the top end of the outer cover plate axle seat, and the elastic component is a metal spring. Compared with the prior art, not only the utility model can be operated by single hand and adjusted in stepless, but also the structure is stable and reliable, is not easy to shed off and the product is durable.
Description
Technical field:
The utility model relates to the cap hoop slack adjuster of a kind of safety cap, particularly safety cap.
Background technology:
Be widely used in the safety cap in factory or building site at present,, often be provided with cap hoop adjusting device for the user who is fit to different head dummy sizes wears.Common adjusting device has following two kinds of forms: a kind of is the structure that the pin pin-and-hole cooperates, this structure can not electrodelessly be regulated owing to limited by the pin-and-hole spacing, and the also bad operation of one hand, very inconvenient when under some specific working environment, using, and have potential safety hazard; Another kind is the governor motion of knob, as Chinese patent 99258065.X number " having the safety cap that hatband is adjusted structure " disclosed cap hoop adjusting device, comprise the cap hoop that is fixed in the safety cap, inner cover plate, knob, lock gear, flexible member, travelling gear and packing ring, wherein, left side at cap hoop rear portion, right two side hatbands are provided with the bar hole with monolateral profile of tooth, an and left side, has rightabout profile of tooth on the right two side hatbands, hub head end at knob is provided with elastic clamping hook, the inner face of knob is provided with helical teeth, side in lock gear is provided with identical helical teeth simultaneously, the outer rim of this lock gear is provided with sawtooth, the inner edge of its axis hole cooperates the profile of tooth of travelling gear outer rim to be provided with several projections, one end of this travelling gear is provided with a flange, its axis hole is provided with bar hole near a side of flange, in addition, on the outer cover plate, the inner face of two ends is provided with tongue down, the outside of outer cover plate is provided with an axle bed, at the inner edge front end of axle bed around being provided with several projections, and on inner cover plate, two sides then are provided with projection with respect to the relative position place of bar hole on the outer cover plate down.
Also there is following some weak point in this knob cap hoop adjusting device: can rotate relatively between (1) knob and the travelling gear, it connects and cooperates what adopt is elastic clamping hook, though easy for installation, be easy to come off in using; (2) to drive the rotation of this travelling gear be that helical teeth by the knob inwall meshes with lock gear to knob, and then drive the rotation of this travelling gear by lock gear, transmission progression is too many like this, there is no too big necessity, and grows the back service time owing to gear wear causes the malfunctioning of transmission; (3) sawtooth of outer cover plate and lock gear cooperation place is positioned at the top of outer cover plate axle bed, and such structure can not prevent effectively that lock gear from outwards coming off; (4) inefficacy that flattens easily of the ring-type shell fragment between inwall upper gasket and the lock gear.
Summary of the invention:
The purpose of this utility model is to overcome the deficiencies in the prior art, and a kind of cap hoop adjusting device is provided, and this device not only can one-handed performance, electrodeless adjusting, and sound construction is reliable, difficult drop-off, and product is durable in use.
For achieving the above object, the utility model comprises two hatbands, inner cover plate, outer cover plate, knob, lock gear, flexible member, the travelling gear at cap hoop rear portion; Wherein be respectively equipped with the bar hole with monolateral tooth bar on two hatbands, the external tooth of travelling gear is meshed with tooth bar on the hatband; The external tooth of lock gear is meshed with profile of tooth on the outer cover plate axle bed inwall, and the internal tooth of this lock gear is meshed with the external tooth of travelling gear; Be can not counterrotating tight fit between this knob and the travelling gear.
Can be between knob and the travelling gear for pin-and-hole cooperate, having the cross section on the knob is square latch, then has corresponding with it pin-and-hole on the travelling gear; Adopt screw to be connected and fixed between knob and travelling gear; Also be embedded with connector in the knob, this connector is meshed with lock gear; The sidewall of knob inner surface is provided with limited impression, and the outer rim of connector is provided with the projection that matches with described limited impression, and this groove can be semicircle; The axle bed top of outer cover plate is provided with and is used to the defining flange that prevents that lock gear from outwards coming off, and the profile of tooth on the axle bed inwall is positioned at the lower end of this defining flange; Described flexible member is a metal spring.
The utility model compared with prior art, because changing pin-and-hole fixed connection in relative rotation into by counterrotating flexible clamping between knob and the travelling gear, and it is fastening in addition with screw, part is connected firmly, difficult drop-off thereby make, and directly drive the rotation of travelling gear by knob, transmission that need not lock gear; Outer cover plate axle bed top is provided with defining flange, can prevent effectively that lock gear from outwards coming off; The utility model also changes ring-type shell fragment of the prior art into common metal spring in addition, has not only simplified technology, and is difficult for losing efficacy, and is durable in use.
Description of drawings:
Fig. 1 is a cutaway view of the present utility model;
Fig. 2 is the upward view of knob portion;
Fig. 3 is the cutaway view of knob portion;
Fig. 4 is the upward view of connector;
Fig. 5 is the cutaway view of connector;
Fig. 6 is the vertical view of lock gear;
Fig. 7 is the cutaway view of lock gear;
Fig. 8 is the cutaway view of travelling gear;
Fig. 9 is the vertical view of travelling gear;
Figure 10 is the cutaway view of inner cover plate;
Figure 11 is the upward view of outer cover plate;
Figure 12 is the cutaway view of outer cover plate;
Figure 13 is an operation principle schematic diagram of the present utility model.
The specific embodiment:
Below in conjunction with drawings and Examples the utility model is further described.
As Fig. 1 and shown in Figure 13, present embodiment mainly is made up of two hatbands 16, inner cover plate 1, outer cover plate 2, knob 3, connector 8, lock gear 4, metal spring 5, travelling gear 6 and the packing ring 7 at safety cap cap hoop rear portion, wherein, opposite in the profile of tooth direction that is respectively equipped with on two hatbands 16 with on the bar hole 10 of monolateral tooth bar 9 and two hatbands.Shown in Fig. 1,2,3,8,9, for pin-and-hole cooperates, the hub head end of knob 3 is provided with the latch 31 of square-section between knob 3 and the travelling gear 6, then has corresponding with it pin-and-hole 63 on the travelling gear; 6 of knob 3 and travelling gears adopt screw 11 to be connected and fixed.Referring to Fig. 2 and Fig. 4, the sidewall of knob 3 inner surfaces is provided with semicircular limited impression 12, and the outer rim of connector 8 then is provided with the projection 13 that matches with limited impression 12, and the lower surface of this connector 8 is provided with helical teeth 81.Referring to Fig. 6 and Fig. 7, the upper surface of lock gear 4 is provided with the helical teeth 42 with connector 8 engagements, its lower end outer rim is provided with sawtooth 41, simultaneously referring to Figure 11 and Figure 12, outer cover plate 2 outwards is provided with axle bed 21 projectedly in the center, these axle bed 21 tops are provided with and are used to the defining flange 22 that prevents that lock gear 4 from outwards coming off, and along being provided with sawtooth 23 on the inwall of axle bed, this sawtooth 23 is meshed with the sawtooth 41 of described lock gear 4 outer rims below this flange 22.Referring to Figure 10～12, be provided with some grooves 24 at outer cover plate 2 medial surface along its length, the position with respect to outer cover plate 2 upper grooves 24 on inner cover plate 3 lateral surface along its length then is provided with projection 14.Referring to Fig. 8～10, the end that this travelling gear 6 contacts with inner cover plate is provided with flange 61, and its axis hole is provided with groove 62 near a side of flange, and position corresponding with groove 62 on inner cover plate is provided with reference column 15.
Borrow aforesaid structure, with two hatbands 16 overlapping after respectively with travelling gear 6 engagements, in regular turn packing ring 7, spring 5, lock gear 4 are inserted again, the set sawtooth 23 of lock gear 4 and outer cover plate 2 axle bed inwalls is meshing with each other, the internal tooth of lock gear 4 is meshed with the external tooth 64 of travelling gear 6, then knob 3 and connector 8 are inserted the latch 31 of knob 3 in the pin-and-hole 63 of travelling gears after chimeric again, and be tightened with screw 11, at last the projection on the inner cover plate 1 14 is pressed on the outer cover plate 2 in the corresponding groove 24, thus whole device sealing is fixing.At this moment, set flange 61 can be pushed down hatband 16 and avoid it to come off dropping out on the travelling gear 6, the profile of tooth 64 of travelling gear 6 outer rims then respectively with the hatband bar hole in profile of tooth 9 engagements.
In the time will adjusting the cap hoop, with the direct turning knob 3 of hand, at this moment, because between knob and the travelling gear is tight fit, therefore can directly drive the rotation of this travelling gear, need only the sawtooth 41 and the set original state that meshes of sawtooth 23 disengagings of axle bed inwall that lock gear 4 are made lock gear 4 outer rims toward interior pressuring springs 5, this moment, knob 3 can drive the rotation of this travelling gear 6, hatband with travelling gear outer rim profile of tooth engagement is advanced or retreat (as shown in figure 13), so as to reaching the effect of adjusting hatband length, after being adjusted to hatband suitable degree of tightness, the user decontrols knob 3, this moment can be with lock gear 5 pushed home by means of the strength of spring, the set sawtooth 23 of the sawtooth 41 that makes lock gear 4 outer rims and axle bed 21 inwalls is replied the state of original engagement and can't be rotated, even if the cap hoop is subjected to big strength again and also can't makes travelling gear 6 rotations at this moment, therefore, can reach the effect that prevents the hatband accidental release.
Claims (7)
1, a kind of safety cap cap hoop adjusting device comprises two hatbands (16), inner cover plate (1), outer cover plate (2), knob (3), lock gear (4), flexible member (5), the travelling gear (6) at cap hoop rear portion; Wherein be respectively equipped with the bar hole (10) with monolateral tooth bar (9) on two hatbands (16), the external tooth (64) of travelling gear (6) is meshed with tooth bar (9) on the hatband; The external tooth (41) of lock gear (4) is meshed with profile of tooth (23) on outer cover plate axle bed (21) inwall, and the internal tooth (43) of this lock gear (4) is meshed with the external tooth (64) of travelling gear; It is characterized in that: between described knob (3) and the travelling gear (6) being can not counterrotating tight fit.
2, safety cap cap hoop adjusting device according to claim 1 is characterized in that: for pin-and-hole cooperates, having the cross section on the knob is square latch (31) between knob (3) and the travelling gear (6), has corresponding with it pin-and-hole (63) on the travelling gear; Be connected and fixed with screw (11) between knob and travelling gear.
3, safety cap cap hoop adjusting device according to claim 1 and 2 is characterized in that: also be embedded with connector (8) in the knob (3), this connector (8) is meshed with lock gear (4).
4, safety cap cap hoop adjusting device according to claim 3, it is characterized in that: the sidewall of knob (3) inner surface is provided with limited impression (12), and the outer rim of connector (8) is provided with the projection (13) that matches with described limited impression (12).
5, safety cap cap hoop adjusting device according to claim 4 is characterized in that: this limited impression (12) is for semicircle.
6, safety cap cap hoop adjusting device according to claim 1, it is characterized in that: outer cover plate axle bed (21) top is provided with and is used to the defining flange (22) that prevents that lock gear (4) from outwards coming off, and the profile of tooth on the axle bed inwall (23) is positioned at the lower end of this defining flange (22).
7, according to claim 1 or 2 or 6 described safety cap cap hoop adjusting devices, it is characterized in that: described flexible member (5) is a metal spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03225847 CN2636650Y (en) | 2003-05-04 | 2003-05-04 | Safety hat hoop regulating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03225847 CN2636650Y (en) | 2003-05-04 | 2003-05-04 | Safety hat hoop regulating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2636650Y true CN2636650Y (en) | 2004-09-01 |
Family
ID=34290777
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03225847 Expired - Fee Related CN2636650Y (en) | 2003-05-04 | 2003-05-04 | Safety hat hoop regulating device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2636650Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008124978A1 (en) * | 2007-04-13 | 2008-10-23 | Shenzhen Breeze Technology Co., Ltd. | Head massage device with distance adjustable mechanisms |
| CN105815895A (en) * | 2016-05-19 | 2016-08-03 | 青岛歌尔声学科技有限公司 | Wearable product belt connection structure |
| CN109380817A (en) * | 2017-08-02 | 2019-02-26 | 宏碁股份有限公司 | Frenulum adjusts structure |
| CN111637670A (en) * | 2020-04-29 | 2020-09-08 | 海信容声(广东)冰箱有限公司 | Refrigerator with a door |
| CN116909034A (en) * | 2023-09-12 | 2023-10-20 | 歌尔股份有限公司 | Bandage adjustment mechanism and head-mounted display device |
-
2003
- 2003-05-04 CN CN 03225847 patent/CN2636650Y/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008124978A1 (en) * | 2007-04-13 | 2008-10-23 | Shenzhen Breeze Technology Co., Ltd. | Head massage device with distance adjustable mechanisms |
| CN101040815B (en) * | 2007-04-13 | 2011-01-12 | 深圳市轻松科技股份有限公司 | Distance adjusting mechanism and the hat of head massager having said mechanism |
| CN105815895A (en) * | 2016-05-19 | 2016-08-03 | 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 |
| CN109380817A (en) * | 2017-08-02 | 2019-02-26 | 宏碁股份有限公司 | Frenulum adjusts structure |
| CN111637670A (en) * | 2020-04-29 | 2020-09-08 | 海信容声(广东)冰箱有限公司 | Refrigerator with a door |
| CN111637670B (en) * | 2020-04-29 | 2021-12-28 | 海信容声(广东)冰箱有限公司 | Refrigerator with a door |
| CN116909034A (en) * | 2023-09-12 | 2023-10-20 | 歌尔股份有限公司 | Bandage adjustment mechanism and head-mounted display device |
| CN116909034B (en) * | 2023-09-12 | 2023-12-01 | 歌尔股份有限公司 | Bandage adjustment mechanism and head-mounted display device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |