CN105996274A - Rotation limiting mechanism - Google Patents

Rotation limiting mechanism Download PDF

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Publication number
CN105996274A
CN105996274A CN201610466330.9A CN201610466330A CN105996274A CN 105996274 A CN105996274 A CN 105996274A CN 201610466330 A CN201610466330 A CN 201610466330A CN 105996274 A CN105996274 A CN 105996274A
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CN
China
Prior art keywords
lock
ear
turns
limit
drive rod
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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.)
Granted
Application number
CN201610466330.9A
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Chinese (zh)
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CN105996274B (en
Inventor
张玉莲
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Haining Qiantang New Rural Development Co., Ltd
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张玉莲
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Filing date
Publication date
Application filed by 张玉莲 filed Critical 张玉莲
Priority to CN201610466330.9A priority Critical patent/CN105996274B/en
Publication of CN105996274A publication Critical patent/CN105996274A/en
Application granted granted Critical
Publication of CN105996274B publication Critical patent/CN105996274B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • AHUMAN NECESSITIES
    • A42HEADWEAR
    • A42BHATS; HEAD COVERINGS
    • A42B3/00Helmets; Helmet covers ; Other protective head coverings
    • A42B3/04Parts, details or accessories of helmets
    • AHUMAN NECESSITIES
    • A42HEADWEAR
    • A42BHATS; HEAD COVERINGS
    • A42B3/00Helmets; Helmet covers ; Other protective head coverings
    • A42B3/04Parts, details or accessories of helmets
    • A42B3/18Face protection devices
    • A42B3/20Face guards, e.g. for ice hockey

Abstract

The invention relates to a rotation limiting mechanism used for a motorcycle helmet. The motorcycle helmet comprises a helmet body and a mask, wherein a linkage mechanism is arranged on each of two sides of the helmet body; an ear part is arranged on each of two sides of the mask, and each ear part is in linkage with one corresponding linkage mechanism; each linkage mechanism comprises a casing; the rotation limiting mechanism is mounted in the casing, so that a middle casing cannot rotate except under the action of preset external force; the rotation limiting mechanism comprises a gear, a rotation limiting casing, a rotation limiting clamping pin, a rotation limiting pressure spring and a rotation limiting ejection part; the rotation limiting ejection part comprises a rotation limiting ejection plate, a rotation limiting screw and a rotation limiting hand wheel; the rotation limiting pressure spring is mounted in a rotation limiting sliding chute, and the rotation limiting hand wheel is rotated to drive the rotation limiting ejection plate to move close to or away from a rotation limiting clamping pin sliding matching part. According to the rotation limiting mechanism, the amount of compression of the rotation limiting pressure spring can be adjusted through the rotation limiting ejection part, so that the rotation limiting mechanism can work reliably, the function of the rotation limiting mechanism can be maintained all the time, the service life is prolonged, and the use stability is improved.

Description

A kind of limit rotation mechanism
Technical field
The present invention relates to a kind of limit rotation mechanism, a kind of limit rotation mechanism on motorcycle helmet.
Background technology
Motorcycle driver must put on the helmet to protect its head.Existing motorcycle helmet generally comprises and is worn on the head Helmet main body and transparent face shield, face shield is installed in rotation in helmet main body by the linkwork of both sides, is being not required to Can upwards be pushed into away from face during face shield to be used, can be pushed into downwards when needs use face shield and block face.Come by face shield Prevent the materials such as wind, rain, dirt to the face of driver and eye damage.
When not using motorcycle helmet, need it is deposited, if placing it in outer easily stolen, therefore one As be deposited in the railway carriage below medicated cushion.Due to the limited space of railway carriage, especially housing raincoat, water bottle, knapsack After articles for use, railway carriage is remaining can just become less by parking space.And face shield and helmet main body are made because of both assembly relations Become to take the biggest space, be stored inconveniently in railway carriage.
In order to make face shield can rest in rotation process on arbitrary turned position, typically it is provided with limit rotation mechanism, makes Obtaining face shield just to rotate under predetermined External Force Acting, after cancelling external force, limit rotation mechanism overcomes the gravity of face shield not to be rotated further by, real Existing face shield can rest on arbitrary turned position in rotation process.
Existing limit rotation mechanism typically utilizes the effect of spring to realize, but spring its elasticity in use for some time Power can reduce, and causes limiting rotation mechanism and loses its effect, and service life is short, less stable.
Summary of the invention
In order to overcome short problem in service life in prior art, the embodiment of the present invention provides one limit rotation mechanism, is used for On motorcycle helmet, this motorcycle helmet includes helmet main body and face shield, helmet main body be respectively provided on two sides with a coupling mechanism, Face shield be respectively provided on two sides with an ear, each ear couples with a coupling mechanism respectively, and each coupling mechanism includes: housing, its Including inner side shell, middle case and outer shell, inner side shell and outer shell separate from the both sides of middle case, and inner side shell is fixedly mounted on head On helmet body, middle case is installed in rotation on the shell of inner side, and outer shell is fixedly mounted on middle case, outer shell and middle case Between be formed be available for ear plug slot;Limit rotation mechanism, is installed in housing so that middle case is at predetermined External Force Acting Lower just rotation;Helmet main body is provided with installation stud, and inner side shell is provided with positioning convex column, is provided with centre bore in positioning convex column, in Between shell be provided with and turn hole, positioning convex column is ladder shaft-like and includes enlarged diameter section and reduced diameter section, enlarged diameter section and reduced diameter section Junction formed convex shoulder;Middle case is set in outside the reduced diameter section of positioning convex column rotationally through turning hole, installs stud and inserts In centre bore, a screw insert centre bore and with stud threaded engagement, the head of screw and the reduced diameter section of positioning convex column are installed End offset and inner side shell be fastened in helmet main body, middle case is limited between the head of screw and convex shoulder;This limit Rotation mechanism includes gear, limit transcapsidation, limit turns bayonet lock, limit turns stage clip and limit turns head part;This gear is fixedly mounted in positioning convex column Enlarged diameter section on;This limit transcapsidation is fixedly mounted on middle case, is provided with limit and turns chute in this limit transcapsidation, and this limit transcapsidation sets Have and turn, with limit, the limit transcapsidation opening that chute connects;This limit turns head part and includes that limit turns top board, limit turns screw rod and limit changes hands wheel, and limit turns Top board is installed on limit slippingly and turns in chute, and limit turns one end of screw rod and is pressed on limit and turns on top board, and limit turns the other end of screw rod Stretching out outside limit transcapsidation and change hands wheel with limit and connect, limit turns screw rod and limit transcapsidation threaded engagement;This limit turns bayonet lock and includes being connected on mutually one The limit risen turns bayonet lock and is slidably matched portion and limit turns bayonet lock protuberance, and this limit turns the bayonet lock portion of being slidably matched and is slidably mounted on limit and turns In chute, this limit turns bayonet lock protuberance and stretches out in the teeth groove limiting transcapsidation and stretching into gear from limit transcapsidation opening, and this limit turns card Pin protuberance is jumped into the teeth groove of another gear from the teeth groove of the gear currently stretched into when middle case rotates;Limit turns bayonet lock and protrudes Portion is tapered, and this limit turns the limit that is respectively provided on two sides with of bayonet lock protuberance and turns bayonet lock inclined-plane;Limit turns stage clip and is installed on limit and turns in chute, Limit turns one end contact limit of stage clip and turns bayonet lock and be slidably matched portion, and limit turns the other end contact limit of stage clip and turns top board, rotates limit and change hands Wheel turns top board with drive limit and makees to turn the motion of the bayonet lock portion of being slidably matched closer or far from limit.
The present invention makes face shield rotate under predetermined external force (the most manual dynamicthrust) acts on by arranging limit rotation mechanism, The action of gravity overcoming face shield self after cancelling predetermined external force stops operating, and rests on the position after rotation.
The limit rotation mechanism of the present invention turns head part and can regulate limit by arranging limit and turn the decrement of stage clip and turn pressure with regulation limit The elastic force of spring, makes limit rotation mechanism reliably work, and maintains the function of limit rotation mechanism all the time, to improve service life and use Stability.
Accompanying drawing explanation
Fig. 1 shows the schematic perspective view of motorcycle helmet;
Fig. 2 show face shield separation helmet body after schematic perspective view;
Fig. 3 shows the perspective exploded view of motorcycle helmet;
Fig. 4 shows the perspective exploded view of another angle of motorcycle helmet, wherein hides helmet body and face shield;
Fig. 5 show ear extract slot after schematic diagram, wherein hide helmet body and outer shell;
Fig. 6 shows the A-A sectional view of Fig. 1;
Fig. 7 shows the B-B sectional view of Fig. 6;
Fig. 8 shows the C portion partial enlarged drawing of Fig. 6;
Fig. 9 shows the D portion partial enlarged drawing of Fig. 6;
Figure 10 shows the E portion partial enlarged drawing of Fig. 6;
Figure 11 shows the F portion partial enlarged drawing of Fig. 7;
Figure 12 shows the G portion partial enlarged drawing of Fig. 7;
Figure 13 shows the schematic diagram after ear extracts on the basis of Fig. 6 slot;
Figure 14 shows the schematic diagram after ear extracts on the basis of Fig. 7 slot;
Figure 15 shows the H portion partial enlarged drawing of Figure 13;
Figure 16 shows the J portion partial enlarged drawing of Figure 14;
Figure 17 shows the K portion partial enlarged drawing of Figure 14;
Figure 18 shows the schematic perspective view of lock ear mechanism;
Figure 19 shows the schematic perspective view of the lock ear mechanism after separating lock auricular concha;
Figure 20 shows the perspective exploded view of lock ear mechanism;
Figure 21 shows the schematic perspective view of ejecting mechanism;
Figure 22 shows the perspective exploded view of ejecting mechanism;
Figure 23 shows the schematic perspective view of limit rotation mechanism;
Figure 24 shows the perspective exploded view of limit rotation mechanism;
Figure 25 shows the schematic perspective view of lock rotation mechanism;
Figure 26 shows the schematic perspective view of the lock rotation mechanism after separating lock transcapsidation;
Figure 27 shows the perspective exploded view of lock rotation mechanism.
Detailed description of the invention:
A kind of motorcycle helmet as shown in Fig. 1 to Figure 27, including helmet main body 10 He for being worn on driver's head Transparent face shield 20, helmet main body 10 be respectively provided on two sides with a coupling mechanism 30, face shield 20 be respectively provided on two sides with an ear 201, each ear 201 couples with a coupling mechanism 30 respectively, and especially, each ear 201 inserts respectively in removable mode Entering in a coupling mechanism 30, each coupling mechanism includes:
As shown in Figure 3 and Figure 4, housing 40, it includes inner side shell 401, middle case 402 and outer shell 403, inner side shell 401 With the both sides that outer shell 403 separates from middle case 402, inner side shell 401 is fixedly mounted in helmet main body 10, and middle case 402 can Being rotatably mounted on the shell 401 of inner side, outer shell 403 is fixedly mounted on middle case 402, in the present embodiment, outer shell 403 with Middle case 402 is snapped together by buckle connecting structure (not shown), i.e. outer shell 403 is fastened on middle case 402 Together, in order to the dismounting of outer shell, the buckle connecting structure of the present embodiment can use existing buckle connecting structure, It is formed between outer shell 403 and middle case 402 and is available for the slot 404 of ear 201 plug to realize ear 201 and coupling mechanism The connection of 30, in the present embodiment, housing 40 is provided with the notch 405 connected with slot 404, and especially, notch 405 is located at outer shell Between 403 and middle case 402, ear 201, in notch 405 inserts slot 404, is formed between inner side shell 401 and middle case 402 A limit is had to turn room 406;The shell structure of the present embodiment is simple, it is achieved middle case and the rotatable assembling in outside, i.e. realizes face shield Rotatable, can upwards be pushed into when need not and using face shield away from face, can be pushed into downwards when needs use face shield and block Face;Limit is turned room by the shell mechanism of the present invention independently separates with slot, it is to avoid ear with first turn indoor parts (such as tooth Wheel) collide, rub;
Lock ear mechanism 50, is installed in housing 40, for locking the ear 201 inserted in slot 404 to stop ear 201 Extract slot 404, especially, this lock ear mechanism 50 for ear 201 that locking or unclamp is inserted in slot 404 stoping or Person allows ear 201 to extract slot 404;The present invention can avoid the ear inserted in slot surprisingly to take off by arranging lock ear mechanism From slot, i.e. avoid face shield and helmet main body accidental separation, it is ensured that the safety and reliability of use.
Button 60, is installed in housing 40, and for driver's Manual press, button 60 couples, at button with lock ear mechanism 50 60 when being pressed, and this lock ear mechanism 50 unclamps the ear 201 inserted in slot 404 to allow ear 201 to extract slot 404;This Invent and can be easy to driver's manual operation dismounting face shield by settings button so that be the convenient disassembly of face shield, quick;Face shield can be with Tear open with dress.
Ejecting mechanism 70, is installed in housing 40, is especially installed in slot 404, make the ear in insertion slot 404 201 have the trend exiting slot 404, i.e. ejecting mechanism 70 pushes away and makes the ear 201 in insertion slot 404 towards exiting slot The direction motion of 404.The present invention is by arranging ejecting mechanism, and when locking ear mechanism and unclamping ear, ejecting mechanism will be inserted on one's own initiative The ear entered in slot pushes outside slot, and driver can be enable to extract ear easily, rapidly.
Limit rotation mechanism 80, is installed in housing 40, is especially installed on limit and turns in room 406 so that middle case 402 is predetermined External Force Acting under just rotate;The present invention makes face shield in predetermined external force (the most manual dynamicthrust) by arranging limit rotation mechanism Effect is lower to be rotated, and overcomes the action of gravity of face shield self to stop operating after cancelling predetermined external force, and after resting on rotation Position.
Lock rotation mechanism 90, is installed in housing 40, is especially installed in middle case 402, inserts slot in ear 201 Allow middle case 402 to rotate after 404, and stop middle case 402 to rotate after slot 404 is extracted by ear 201.If face shield with After helmet main body separates, the middle case of helmet main body both sides relatively rotates (including outer shell), causes the slot position of both sides Putting and stagger not parallel, during face shield to be installed, the ear of both face shields needs to find respectively the position of slot, so can produce installation The problem of difficulty.In order to solve this technical problem, the present invention is by arranging lock rotation mechanism so that after ear inserts slot, face Cover allows to rotate together with middle case (including outer shell), after slot is extracted by ear (after i.e. face shield departs from helmet main body), in Between shell (including outer shell) forbid rotate, the middle case (including outer shell) of such helmet main body both sides actually can only synchronize turn Dynamic, it is impossible to relatively rotate, it is to avoid the slot position of both sides staggers not parallel and causes the problem of installation difficulty to occur.
In the present embodiment, lock rotation mechanism 90 separates from the both sides of slot 404 with lock ear mechanism 50.
As shown in Figures 3 to 10, this helmet main body 10 is provided with installation stud 101, especially, the two of this helmet main body 10 Side is respectively equipped with an installation stud 101, and each installation stud 101 is for installing a coupling mechanism 30, and inner side shell 401 is provided with fixed Position projection 407, is provided with centre bore 408 in positioning convex column 407, middle case 402 is provided with and turns hole 409, and positioning convex column 407 is in ladder Shaft-like and include enlarged diameter section 410 and reduced diameter section 411, enlarged diameter section 410 forms convex shoulder with the junction of reduced diameter section 411 412;
Middle case 402 is set in outside the reduced diameter section 411 of positioning convex column rotationally through turning hole 409, installs stud 101 and inserts Enter in centre bore 408, a screw 413 insert centre bore 408 and with stud 101 threaded engagement is installed, the head 414 of screw is with fixed The end 415 of the reduced diameter section of position projection offsets and is fastened in helmet main body 10 by inner side shell 401, and middle case 402 is placed restrictions on So that middle case 402 is axially located and circumferentially rotates between the head 414 and convex shoulder 412 of screw, say, that middle case 402 is to be positioned along the moving of axis direction of positioning convex column 407, and middle case 402 can be around the reduced diameter section 411 of positioning convex column Rotate, i.e. middle case 402 rotates around the axis of positioning convex column 407.The shell structure of the present invention makes screw be hidden in housing In, play dust-proof, waterproof effect, it is to avoid screw expose produce because exposing to the sun and rain get rusty, the phenomenon such as damage.Need to dismount spiral shell The when of nail, only need to open outer shell.
As shown in Fig. 5, Fig. 7, Figure 11, Figure 14, Figure 16, Figure 18, Figure 19 and Figure 20, this lock ear mechanism 50 includes locking auricular concha 501, lock ear latch 502, lock ear drive rod 503, lock ear connecting rod 504, lock ear abduction rod 505 and lock ear torsion spring 506;
During in the present embodiment, this lock auricular concha 501 is put together by two half-shell, and it is arranged on by the first screw 507 Between in shell 402;
It is provided with lock ear cavity volume 508 in this lock auricular concha 501, is provided with lock ear in lock ear cavity volume 508 and fixes axle 509, this lock auricular concha 501 are provided with lock ear the first opening 510 and lock ear the second opening 511, this lock ear first opening 510 and lock ear the second opening 511 All connect with lock ear cavity volume 508;
This lock ear latch 502 includes that the lock ear latch being connected together is slidably matched portion 512 and locks ear latch protuberance 513, this lock ear latch portion 512 that is slidably matched is slidably mounted in lock ear cavity volume 508, and this lock ear latch is slidably matched portion 512 in the guiding lower slider of inwall of the lock auricular concha 501 surrounding lock ear cavity volume 508, and this lock ear latch protuberance 513 is from lock ear the One opening 510 stretches out in outside lock ear cavity volume 508 and stretches in slot 404;
This lock ear drive rod 503 include the lock ear drive rod being connected together be slidably matched portion 514 and lock ear drive rod convex Going out portion 515, this lock ear drive rod portion 514 that is slidably matched is slidably mounted in lock ear cavity volume 508, and this lock ear drive rod is sliding Dynamic auxiliary section 514 is at the guiding lower slider of the inwall of the lock auricular concha 501 surrounding lock ear cavity volume 508, this lock ear drive rod protuberance 515 from lock ear the second opening 511 stretches out in lock ear cavity volume 508, and this button 60 is fixedly mounted in lock ear drive rod protuberance On 515;
The glide direction of this lock ear latch 502 is vertical with the glide direction of lock ear drive rod 503;
This lock ear abduction rod 505 includes the galianconism 516 and long-armed 517 being connected together, one end of galianconism 516 and long-armed 517 One end connect, the other end of galianconism 516 be provided with lock ear roller 518, the other end of long-armed 517 with lock ear connecting rod 504 one end Hinged, the other end of lock ear connecting rod 504 is with to lock the ear latch portion 512 that is slidably matched hinged;
This galianconism 516 and long-armed 517 joint be provided with one lock ear perforation 519, this lock ear abduction rod 505 through lock ear perforation 519 are rotatably mounted around lock ear fixes on axle 509;
This lock ear drive rod be slidably matched portion 514 be provided with lock ear drive rod inclined-plane 520, lock ear roller 518 be pressed on lock So that lock ear roller 518 slides along lock ear drive rod inclined-plane 520 on ear drive rod inclined-plane 520, press button 60 and make lock ear drive Lever 503 drives lock ear abduction rod 505 to fix axle 509 O along clockwise direction around lock ear and rotates, and during release button 60, locks ear torsion spring 506 order about lock ear abduction rod 505 fixes axle 509 P in the counterclockwise direction rotation around lock ear and drives lock ear drive rod 503 to reset;
This lock ear torsion spring 506 is sleeved on lock ear and fixes on axle 509, and it is solid that an elastic arm 521 of this lock ear torsion spring is arranged on lock ear On dead axle 509, another elastic arm 522 of this lock ear torsion spring is arranged in lock ear abduction rod 505, especially, and another of this lock ear torsion spring Elastic arm 522 is arranged on long-armed 517, and lock ear torsion spring 506 makes lock ear abduction rod 505 have and fixes axle 509 along side counterclockwise around lock ear The trend rotated to P, lock ear torsion spring 506 acts on and makes lock ear roller 518 contact all the time and compress lock ear in lock ear abduction rod 505 Drive rod inclined-plane 520;
Lock ear abduction rod 505 drives lock ear latch 502 to unclamp in a latched position (as seen in figs. 7 and 11) and one when rotating Switching between position (as shown in Figure 14 and Figure 16), when this lock ear latch 502 is in the locked position, the locking of this lock ear mechanism 50 is inserted Enter the ear 201 in slot 404 to stop ear 201 to extract slot 404;When this lock ear latch 502 is in released position, this lock Ear mechanism 50 unclamps the ear 201 inserted in slot 404 to allow ear 201 to extract slot 404;
Ear 201 is provided with recess 202, and in the present embodiment, recess 202 is positioned at top edge 203 position of ear;
When lock ear abduction rod 505 fixes axle 509 O along clockwise direction rotation around lock ear, lock ear latch 502 is from latched position Switch to released position;
When lock ear abduction rod 505 fixes axle 509 P in the counterclockwise direction rotation around lock ear, lock ear latch 502 is from released position Switch to latched position;Wherein,
When lock ear latch 502 is in the locked position, lock ear latch protuberance 513 stretches into the ear in insertion slot 404 To stop ear 201 to extract slot 404 in recess 202;
When lock ear latch 502 is in released position, lock ear latch protuberance 513 exits the ear in insertion slot 404 Recess 202 extracts slot 404 with permission ear 201.
In the present embodiment, in there is not insertion slot 404 in ear 201, lock ear latch 502 is in the locked position.
The lock ear mechanism of the present invention makes glide direction and the lock ear drive rod of this lock ear latch by arranging lock ear abduction rod Glide direction (i.e. the pressing direction of button) be mutually perpendicular to, so can so that button is arranged at the outer face of housing, After taking off motorcycle helmet, owing to the outer face of housing is all revealed in the visual line of sight of driver, therefore can be easy to drive The person of sailing looks for button.Additionally, the lock ear mechanism simple in construction of the present invention, reasonable in design.By to the length of galianconism with long-armed What length was carried out rationally selects, so that the little stroke motion of lock ear drive rod drives the big stroke motion of lock ear latch, to lock ear The big stroke motion of latch is conducive to stably and reliably locking ear, and the little stroke motion of lock ear drive rod is the most whole The space layout design of coupling mechanism, it is simple to reduce the space shared by coupling mechanism, especially can reduce the thickness of coupling mechanism Size on degree direction (i.e. the pressing direction of button).
This lock ear latch protuberance 513 is provided with lock ear latch inclined-plane 523, and ear 201 is provided with the first ear inclined-plane 204, when ear 201 inserts slot 404 from slot 404, the first ear inclined-plane 204 compresses lock ear latch inclined-plane 523 and makes Lock ear latch 502 slides to released position from latched position, and the most now lock ear latch 502 O along clockwise direction rotates, at this During, lock ear abduction rod 505 does not drive lock ear drive rod to slide, and so can more easily insert ear, at least exist During inserting ear, it is not necessary to spend the power driving button and lock ear drive rod to slide;The present invention inserts by arranging lock ear Ear latch is locked from latched position to released position slip so that ear orders about while inserting slot from slot in pin inclined-plane, And after the fully-inserted slot of ear, lock ear latch protuberance falls in the recess in ear;By arranging the first ear inclined-plane Ear can be beneficial to and order about lock ear latch slip;
As shown in Figure 3 and Figure 4, housing 40 includes inner face 416, side 417 and the outer face relative with inner face 416 418, side 417 is connected between inner face 416 and outer face 418, and inner face 416 is towards helmet main body 10, outer face 418 court Outward, i.e. helmet main body 10 dorsad, outer face 418, button 60 protrudes from outer face 418;
The angle of this galianconism 516 and long-armed 517 is right angle;
The length of galianconism 516 length less than long-armed 517;
Inner face 416 is positioned on the shell 401 of inner side, and outer face 418 is positioned in outer shell 403, and side 417 is positioned at middle case On, certainly, side 417 can also be made up of the side of inner side shell 401, middle case 402 and outer shell 403 simultaneously.
As shown in Fig. 5, Fig. 6, Fig. 9, Figure 13, Figure 15, Figure 21 and Figure 22, this ejecting mechanism 70 includes ejecting shell 701, ejecting Pushing block 702 and ejection stage clip 703;
This ejection shell 701 its be also put together by two half-shell, and it is arranged on middle case 402 by the second screw 704 In, it being provided with ejection cavity volume 705 in this ejection shell 701, this ejection shell 701 is provided with and ejects the ejection opening that cavity volume 705 connects 706;
Ejecting pushing block 702 and include outside plate 707, middle interconnecting piece 708 and inner panel 709, this inner panel 709 is slidably mounted on Ejecting in cavity volume 705, one end of this middle interconnecting piece 708 connects with inner panel 709, and the other end of this middle interconnecting piece 708 is through bullet Go out opening 706 stretch out outside ejection cavity volume 705 and connect with outside plate 707;
Eject stage clip 703 to be installed in ejection cavity volume 705;
One end contact ejecting stage clip 703 ejects shell 701, ejects the other end contact inner panel 709 of stage clip 703;
Eject pushing block 702 and compress position (as shown in figure Fig. 6 and Fig. 9) and an ejected position (such as Figure 13 and Figure 15 institute one Show) between slide, eject stage clip 703 and make ejection pushing block 702 have the trend returning to ejected position, i.e. eject stage clip 703 and act on Ejection pushing block 702 is made to move to ejected position from compression position on pushing block 702 ejecting;
When ear 201 inserts slot 404 from slot 404, ear 201 top pressure outside plate 707 (the especially end face of ear 205 top pressure outside plates 707) and push away and make ejection pushing block 702 slide into compression position from ejected position.
Ejection pushing block 702 is when compressing position, and outside plate 707 offsets with ejecting shell 701;
Ejection pushing block 702 is when ejected position, and inner panel 709 offsets with ejecting shell;Realize therefrom by ejecting shell 701 Motion to ejecting pushing block 702 carries out spacing.
The ejecting mechanism simple in construction of the present invention.
As shown in Fig. 6, Fig. 8, Figure 13, Figure 23 and Figure 24, this limit rotation mechanism 80 includes that being positioned at limit turns the gear in room 406 801, limit transcapsidation 802, limit turn bayonet lock 803, limit turns stage clip 804 and limit turns head part 805;
In the present embodiment, this limit transcapsidation 802 is also put together by two half-shell, and it is arranged on by the 3rd screw 806 In middle case 402;
This gear 801 is fixedly mounted on the enlarged diameter section 410 of positioning convex column;
This limit transcapsidation 802 is fixedly mounted on middle case 402 so that limiting transcapsidation 802 and following middle case 402 and rotate, this limit Being provided with limit in transcapsidation 802 and turn chute 807, this limit transcapsidation 802 is provided with and turns, with limiting, the limit transcapsidation opening 808 that chute 807 connects;
This limit turns head part 805 and includes that limit turns top board 809, limit turns screw rod 810 and limit changes hands wheel 811, and limit turns top board 809 can Being installed on limit slippingly and turn in chute 807, limit turns one end of screw rod 810 and is pressed on limit and turns on top board 809, and limit turns screw rod 810 The other end stretches out outside limit transcapsidation 802 and changes hands wheel 811 with limit and connects, and limit turns screw rod 810 and limit transcapsidation 802 threaded engagement, passes through Manually ordering about limit to change hands wheel 811 rotation and limit can be driven to turn top board 809 slide in limit turns chute 807, it is easy to adjust fast, The elastic force of stage clip is turned without disassembling limit transcapsidation i.e. scalable limit;
This limit turns the limit that bayonet lock 803 includes being connected together and turns bayonet lock and be slidably matched portion 812 and limit turns bayonet lock protuberance 813, this limit turns the bayonet lock portion 812 that is slidably matched and is slidably mounted on limit and turns in chute 807, this limit turn bayonet lock protuberance 813 from Limit transcapsidation opening 808 stretches out in outside limit transcapsidation 802 and stretches in the teeth groove of gear 801, and this limit turns bayonet lock protuberance 813 in centre When shell 402 rotates, teeth groove from the gear 801 currently stretched into jumps into the teeth groove of another gear 801;
Limit turns being respectively provided on two sides with of bayonet lock protuberance 813 and turns bayonet lock inclined-plane for the limit coordinated with the flank of tooth of gear 801 814, it is tapered that limit turns bayonet lock protuberance 813, in order to limit turns bayonet lock 803 when middle case 402 rotates from the tooth currently stretched into The teeth groove of wheel 801 is jumped in the teeth groove of another gear 801;
Limit turns stage clip 804 and is installed on limit and turns in chute 807, and limit turns one end contact limit of stage clip 804 and turns bayonet lock and be slidably matched Portion 812, limit turns the other end contact limit of stage clip 804 and turns top board 809, rotates limit and changes hands wheel 811 and lean on driving limit to turn top board 809 Turn the bayonet lock portion 812 that is slidably matched close or remote from limit to move and turn the decrement of stage clip 804 controlling limit.
Limit turns stage clip its elastic force in use for some time and can reduce, and causes limiting rotation mechanism and loses its effect, and face shield exists Intended position cannot be rested under the effect of self gravitation.The limit rotation mechanism of the present embodiment turns head part can adjust by arranging limit Joint limit turns the decrement of stage clip and turns the elastic force of stage clip with regulation limit, makes limit rotation mechanism reliably work, and maintains limit favourable turn all the time The function of structure.
As shown in Fig. 5, figure Fig. 7, Figure 12, Figure 14, Figure 17, Figure 25, Figure 26 and Figure 27, this lock rotation mechanism 90 includes locking transcapsidation 901, lock turns bayonet lock 902, lock turns drive rod 903, lock turns bent axle 904, lock rotating cam 905, lock turn torsion spring 906, lock turns stage clip 907 Connecting rod 900 is turned with lock;
In the present embodiment, this lock transcapsidation 901 is also put together by two half-shell, and it is arranged on by the 4th screw 908 In middle case 402;
Being provided with lock in this lock transcapsidation 901 and turn cavity volume 909, this lock transcapsidation 901 is provided with lock and turns the first opening 910 and lock turns the Two openings 911, this lock turns the first opening 910 and turns second opening 911 with lock and all turn cavity volume 909 with lock and connect;
This lock turns the lock that bayonet lock 902 includes being connected together and turns bayonet lock and be slidably matched portion 912 and lock turns bayonet lock protuberance 913, this lock turns the bayonet lock portion 912 that is slidably matched and is slidably mounted in lock and turns in cavity volume 909, and this lock turns bayonet lock and is slidably matched portion 912 are surrounding the guiding lower slider of inwall that lock turns the lock transcapsidation 901 of cavity volume 909, and this lock turns bayonet lock protuberance 913 and turns the from lock One opening 910 stretches out in lock, and to turn cavity volume 909 outer and stretch into limit and turn in room 406, and this lock turns the bayonet lock portion 912 that is slidably matched and is provided with lock Rotary wheel frame 914, lock rotary wheel frame 914 is provided with lock tumbler wheel 915;
This lock turn the lock that drive rod 903 includes being connected together turn drive rod be slidably matched portion 916 and lock to turn drive rod convex Going out portion 917, this lock turns the drive rod portion 916 that is slidably matched and is slidably mounted in lock and turns in cavity volume 909, and this lock to turn drive rod sliding Dynamic auxiliary section 916 is surrounding the guiding lower slider that lock turns the inwall locking transcapsidation 901 of cavity volume 909, and this lock turns drive rod protuberance 918 stretch out in lock from lock turn the second opening 911 turns cavity volume 909 and stretches in slot 404, and this lock turns drive rod protuberance 918 It is provided with lock and turns drive rod inclined-plane 919;
It is parallel that this lock turns the glide direction that the glide direction of bayonet lock 902 turns drive rod 903 with lock;
This lock turns bent axle 904 and is rotatably installed on lock and turns in cavity volume 909, and this lock rotating cam 905 is fixedly mounted in lock Turning on bent axle 904, and make lock rotating cam 905 follow lock and turn bent axle 904 and turn the axis rotation of bent axle 904 around lock, this lock turns bent axle 904 are provided with rod journal 920, and especially, this lock turns bent axle 904 and is provided with the rod journal 920 of radial deflection, and lock turns connecting rod 900 One end be hinged on rod journal 920, lock turns the other end of connecting rod 900 and is hinged on lock and turns drive rod and be slidably matched in portion 916;
Having far-end Q and near-end R on the profile of this lock rotating cam 905, far-end Q is from locking the center of rotation of rotating cam 905 (i.e. Lock turns the axle center of bent axle 904) distance be N, near-end R is M, wherein, N from the distance of the center of rotation of lock rotating cam 905 > M;
This lock turns stage clip 907 and is arranged on lock and turns in cavity volume 909, and this lock turns one end contact lock transcapsidation 901 of stage clip 907, should Lock turns the other end contact lock of stage clip 907 and turns bayonet lock and be slidably matched portion 912, and this lock turns stage clip 907 makes lock turn the lock tumbler of bayonet lock Wheel 915 keeps contacting with the profile of lock rotating cam 905;
This lock turns torsion spring 906 and is sleeved on lock and turns on bent axle 904, and this lock turns an elastic arm of torsion spring and is arranged in lock transcapsidation 901, This lock turns another elastic arm of torsion spring and is arranged on lock and turns on bent axle 904, and lock turns torsion spring 906 to be made lock turn bent axle 904 to have along clockwise The trend that direction O rotates;
This lock turns puts (as shown in figure Figure 14 and Figure 17) and bayonet lock quasi-indexing in a bayonet lock taboo indexing when bayonet lock 902 slides Put and switch between (as shown in figures 7 and 12);
This lock turns bayonet lock 902 and is in bayonet lock and prohibits indexing when putting, remote with on the profile locking rotating cam 905 of lock tumbler wheel 915 End Q contact, lock turns bayonet lock protuberance 913 and stretches in the teeth groove of gear 801 to stop middle case 402 to rotate;
This lock turns bayonet lock 902 and is in bayonet lock quasi-indexing when putting, near with on the profile locking rotating cam 905 of lock tumbler wheel 915 End R contact, lock turns bayonet lock protuberance 913 and exits the teeth groove of gear 801 to allow middle case 402 to rotate;
This lock turns puts (as shown in figure Figure 14 and Figure 17) and a drive rod in a drive rod taboo indexing when drive rod 903 slides Quasi-indexing is put and is switched between (as shown in figures 7 and 12);
This lock turns drive rod 903 and is in drive rod and prohibits indexing when putting, and this lock turns bayonet lock 902 and is in bayonet lock and prohibits indexing and put;
This lock turns drive rod 903 and is in drive rod quasi-indexing when putting, and this lock turns bayonet lock 902 and is in the quasi-indexing of bayonet lock and puts;
Lock turn drive rod 903 from drive rod prohibit indexing put to the quasi-indexing of drive rod put slip time, lock turns drive rod 903 and drives Lock turns bent axle 904 P in the counterclockwise direction and rotates, and lock tumbler wheel 915 is transported along the profile of lock rotating cam 905 from far-end Q proximally R Dynamic, lock turns bayonet lock 902 to be prohibited indexing from bayonet lock and puts and put slip to the quasi-indexing of bayonet lock;
Lock turn drive rod 903 from the quasi-indexing of drive rod put to drive rod prohibit indexing put slip time, lock turns drive rod 903 and drives Lock turns bent axle 904 O along clockwise direction and rotates, and lock tumbler wheel 915 is transported along the profile proximally R of lock rotating cam 905 to far-end Q Dynamic, lock turns bayonet lock 902 and puts from the quasi-indexing of bayonet lock and prohibit indexing to bayonet lock and put slip;
When ear 201 inserts slot 404 from slot 404, ear 201 compresses lock and turns drive rod inclined-plane 919 and make lock Turn drive rod 903 to prohibit indexing from drive rod and put and put slip to the quasi-indexing of drive rod, and final lock turns drive rod protuberance 918 and ear The lower limb 206 in portion offsets, and lock turns drive rod 903 and is in the quasi-indexing of drive rod and puts.
After slot 404 is extracted by ear 201, lock turn torsion spring 906 order about lock turn bent axle 904 O along clockwise direction rotate, lock Turning drive rod 903 to put back into drive rod from the quasi-indexing of drive rod and prohibit indexing and put, lock rotating cam 905 orders about lock and turns bayonet lock 902 and overcome Lock turns the active force of stage clip 907, and lock tumbler wheel 915 moves along the profile proximally R of lock rotating cam to far-end Q, and lock turns bayonet lock 902 Put from the quasi-indexing of bayonet lock and put slip to bayonet lock taboo indexing.
Ear 201 is provided with the second ear inclined-plane 207, when ear 201 inserts slot 404 from slot 404, ear Second ear inclined-plane 207 compresses lock and turns drive rod inclined-plane 919 and make lock turn drive rod 903 and put to drive rod from drive rod taboo indexing Slip is put in quasi-indexing;The present invention by arrange the second ear inclined-plane can be beneficial to ear order about lock turn drive rod slide.
Lock is provided with lock in turning cavity volume 909 and turns support 923, and lock turns bent axle 904 and is supported rotatably in lock and turns support 923 On;
This lock turns bent axle 904 and is provided with fixed installation dish 924, and this lock turns an elastic arm of torsion spring and is arranged on lock and turns support 923 On, this lock turns another elastic arm of torsion spring and is arranged on fixed installation dish 924;
This lock transcapsidation 901 is across limit and turns between room 406 and slot 404.
In the present embodiment, ear do not have insertion slot in, lock turn drive rod be in drive rod prohibit indexing put.
In the present embodiment, the first ear inclined-plane of ear is connected between the top edge of ear and the end face of ear,
Second ear inclined-plane of ear is connected between the lower limb of ear and the end face of ear.
It is identical with limiting the both sides turning bayonet lock protuberance 813 that the lock of this enforcement turns being respectively provided on two sides with of bayonet lock protuberance 913 Turn bayonet lock inclined-plane for the lock that coordinates with the flank of tooth of gear 801, lock that to turn bayonet lock protuberance 913 tapered.
The lock of this enforcement turns stage clip 907 and is enclosed within lock and turns outside bayonet lock protuberance 913.
The lock rotation mechanism of the present invention uses cam mechanism (i.e. lock rotating cam and coordinating that lock tumbler is taken turns) to realize controlling lock Turn the slip of bayonet lock, can avoid occurring lock to turn bayonet lock and be in bayonet lock and prohibit indexing and moved to card by the relativity of gear when putting Sell the phenomenon that quasi-indexing is put, actually avoid sending lock and turn bayonet lock and be in bayonet lock to prohibit middle case when indexing is put the most rotating existing As, i.e. lock turns bayonet lock in the case of lock rotating cam does not rotate is the most slidably, so can ensure that locking middle case.
The lock rotation mechanism of the present invention turns torsion spring by lock and realizes after slot is extracted by ear, and lock turns drive rod from drive rod Quasi-indexing puts back into the quasi-indexing of drive rod and puts, and its simple in construction is reasonable in design, uses less parts can realize lock turn and drives The reciprocating motion of lever.
The present invention lock rotation mechanism by arrange lock turn stage clip make lock tumbler wheel remain contact lock rotating cam wheel Exterior feature, makes lock rotating cam effectively coordinate with lock tumbler wheel.
The lock ear mechanism of the present invention, limit rotation mechanism, lock rotation mechanism and ejecting mechanism have all been independent modular construction, so Can be easily installed in the housing, improve production efficiency, reduce production cost.
The creation of the present invention comes from following imagination and problem: if can be assembled with helmet main body in use by face shield, Separate helmet main body when not in use, then just can save a lot of space when depositing, it might even be possible to ground face shield plug will be pulled down Entering in helmet main body, so, the actual of whole motorcycle helmet takes up room equal to the space shared by helmet main body, saves Space shared by face shield and face shield and the space shared by helmet main body assembly relation.But the face shield of existing motorcycle helmet Need just can dismount by specific instrument (such as screwdriver).This makes face shield dismounting difficult, time-consuming.For realizing above-mentioned setting Think of the problem solving face shield dismounting difficulty, create the present invention.
The present invention, when dismantling face shield, only need to press the button of the coupling mechanism of both sides, the lock ear of each coupling mechanism respectively The lock ear latch protuberance of mechanism exits the recess of ear, and the ejection pushing block of ejecting mechanism slides toward ejected position from compression position And promote ear toward exiting the motion of slot direction, while slot is extracted by ear, lock turns drive rod protuberance and departs from ear Lower limb and make lock turn drive rod return to drive rod prohibit indexing put;
The ear of face shield both sides, when installing face shield, is inserted in the slot of a coupling mechanism, in ear by the present invention respectively During inserting slot, the first ear inclined-plane of ear compresses lock ear latch inclined-plane and makes lock ear latch from latched position to pine Sliding in open position, the second ear inclined-plane of ear compresses lock and turns drive rod inclined-plane and make lock turn drive rod and put from drive rod taboo indexing Putting slip to the quasi-indexing of drive rod, the end face top of ear presses outside plate to push away and make ejection pushing block slide into compressed-bit from ejected position Put, and finally, lock ear latch protuberance falls in the recess in ear, and lock turns the drive rod protuberance lower limb phase with ear Supporting, lock turns drive rod and is in the quasi-indexing of drive rod and puts, and ejects pushing block and is pushed to compress position.

Claims (6)

1. a limit rotation mechanism, for motorcycle helmet, this motorcycle helmet includes helmet main body and face shield, helmet main body Be respectively provided on two sides with a coupling mechanism, face shield be respectively provided on two sides with an ear, each ear couples with a coupling mechanism respectively, It is characterized in that, each coupling mechanism includes:
Housing, it includes inner side shell, middle case and outer shell, and inner side shell and outer shell separate from the both sides of middle case, inner side shell Being fixedly mounted in helmet main body, middle case is installed in rotation on the shell of inner side, and outer shell is fixedly mounted on middle case, outward The slot being available for ear's plug it is formed with between side shell and middle case;
Limit rotation mechanism, is installed in housing so that middle case just rotates under predetermined External Force Acting;
Helmet main body is provided with installation stud, and inner side shell is provided with positioning convex column, is provided with centre bore, on middle case in positioning convex column Being provided with and turn hole, positioning convex column is ladder shaft-like and includes enlarged diameter section and reduced diameter section, enlarged diameter section and the connection of reduced diameter section Place forms convex shoulder;
Middle case is set in outside the reduced diameter section of positioning convex column rotationally through turning hole, installs stud and inserts in centre bore, a spiral shell Nail insert centre bore and with stud threaded engagement is installed, the end of the head of screw and the reduced diameter section of positioning convex column offset and incite somebody to action Inner side shell is fastened in helmet main body, and middle case is limited between the head of screw and convex shoulder;
This limit rotation mechanism includes gear, limit transcapsidation, limit turns bayonet lock, limit turns stage clip and limit turns head part;
This gear is fixedly mounted on the enlarged diameter section of positioning convex column;
This limit transcapsidation is fixedly mounted on middle case, is provided with limit and turns chute in this limit transcapsidation, and this limit transcapsidation is provided with and limits and turns The limit transcapsidation opening of chute connection;
This limit turns head part and includes that limit turns top board, limit turns screw rod and limit changes hands wheel, and limit turns top board and is installed on limit slippingly and turns sliding In groove, limit turns one end of screw rod and is pressed on limit and turns on top board, and limit turns the other end of screw rod, and to stretch out limit transcapsidation outer and change hands wheel with limit Connecting, limit turns screw rod and limit transcapsidation threaded engagement;
This limit turns the limit that bayonet lock includes being connected together and turns bayonet lock and be slidably matched portion and limit turns bayonet lock protuberance, and it is sliding that this limit turns bayonet lock Dynamic auxiliary section is slidably mounted on limit and turns in chute, this limit turn bayonet lock protuberance from limit transcapsidation opening stretch out in limit transcapsidation also Stretching in the teeth groove of gear, this limit turns bayonet lock protuberance and jumps into another when middle case rotates from the teeth groove of the gear currently stretched into In the teeth groove of gear;
It is tapered that limit turns bayonet lock protuberance, and this limit turns the limit that is respectively provided on two sides with of bayonet lock protuberance and turns bayonet lock inclined-plane;
Limit turns stage clip and is installed on limit and turns in chute, and limit turns one end contact limit of stage clip and turns bayonet lock and be slidably matched portion, and limit turns stage clip Other end contact limit turns top board, rotates limit and changes hands wheel and make to turn the bayonet lock portion of being slidably matched fortune closer or far from limit driving limit to turn top board Dynamic.
A kind of limit rotation mechanism the most according to claim 1, it is characterised in that each coupling mechanism also includes:
Lock ear mechanism, is installed in housing, for locking the ear inserted in slot to stop ear to extract slot;
Button, is installed in housing, and for driver's Manual press, button couples with lock ear mechanism, when button is pressed, and this lock Ear mechanism unclamps the ear inserted in slot to allow ear to extract slot;
Ejecting mechanism, is installed in housing, makes the ear in insertion slot have the trend exiting slot;
Lock rotation mechanism, is installed in housing, allows middle case to rotate, and hinder after slot is extracted by ear after ear inserts slot Only middle case rotates.
A kind of limit rotation mechanism the most according to claim 2, it is characterised in that:
This lock ear mechanism includes locking auricular concha, lock ear latch, lock ear drive rod, lock ear connecting rod, lock ear abduction rod and lock ear torsion spring;
Being provided with lock ear cavity volume in this lock auricular concha, be provided with lock ear and fix axle in lock ear cavity volume, this lock auricular concha is provided with lock ear first and opens Mouth and lock ear the second opening, this lock ear first opening and lock ear the second opening all connect with lock ear cavity volume;
This lock ear latch includes that the lock ear latch being connected together is slidably matched portion and locks ear latch protuberance, and this lock ear latch is sliding Dynamic auxiliary section is slidably mounted in lock ear cavity volume, and this lock ear latch protuberance stretches out in lock ear cavity volume from lock ear the first opening Outer and stretch in slot;
This lock ear drive rod includes that the lock ear drive rod being connected together is slidably matched portion and locks ear drive rod protuberance, this lock ear The drive rod portion of being slidably matched is slidably mounted in lock ear cavity volume, and this lock ear drive rod protuberance stretches out from lock ear the second opening Outside lock ear cavity volume, this button is fixedly mounted on lock ear drive rod protuberance;
The glide direction of this lock ear latch is vertical with the glide direction of lock ear drive rod;
This lock ear abduction rod includes the galianconism that is connected together and long-armed, and one end and long-armed one end of galianconism connect, galianconism another One end is provided with lock ear roller, and the long-armed other end is hinged with one end of lock ear connecting rod, the other end of lock ear connecting rod and lock ear latch The portion that is slidably matched is hinged;
This galianconism and long-armed joint are provided with a lock ear perforation, and this lock ear abduction rod is rotatably mounted around lock ear through lock ear perforation On fixing axle;
This lock ear drive rod portion of being slidably matched is provided with lock ear drive rod inclined-plane, and lock ear roller is pressed on lock ear drive rod inclined-plane So that lock ear roller slides along lock ear drive rod inclined-plane, press button and make lock ear drive rod drive lock ear abduction rod to fix around lock ear Axle is rotated in the clockwise direction;
This lock ear torsion spring set is contained in lock ear and fixes on axle, and an elastic arm of this lock ear torsion spring is arranged on lock ear and fixes on axle, this lock ear Another elastic arm of torsion spring is arranged in lock ear abduction rod, and lock ear torsion spring makes lock ear abduction rod have and fixes axle in the counterclockwise direction around lock ear The trend rotated;
Lock ear abduction rod drives lock ear latch to switch between a latched position and a released position when rotating;
Ear is provided with recess;
Lock ear abduction rod around lock ear fix axle be rotated in the clockwise direction time, lock ear latch switch to unclamp position from latched position Put;
Lock ear abduction rod around lock ear fix axle rotate in the counterclockwise direction time, lock ear latch switch to locking bit from released position Put;Wherein,
When lock ear latch is in the locked position, lock ear latch protuberance stretches in the recess of the ear inserted in slot;
When lock ear latch is in released position, lock ear latch protuberance exits the recess of the ear inserted in slot.
A kind of limit rotation mechanism the most according to claim 3, it is characterised in that:
This lock ear latch protuberance is provided with lock ear latch inclined-plane, and ear is provided with the first ear inclined-plane, in ear from slot When inserting slot, the first ear inclined-plane compresses lock ear latch inclined-plane and makes lock ear latch slide to released position from latched position;
Housing includes inner face, side and the outer face relative with inner face, and side is connected between inner face and outer face, interior End face protrudes from outer face towards helmet main body, button;
This galianconism and long-armed angle are right angles;
The length of galianconism is less than long-armed length;
Inner face is positioned on the shell of inner side, and outer face is positioned in outer shell.
A kind of limit rotation mechanism the most according to claim 4, it is characterised in that:
This ejecting mechanism includes ejecting shell, ejecting pushing block and eject stage clip;
Being provided with ejection cavity volume in this ejection shell, this ejection shell is provided with and ejects the ejection opening that cavity volume connects;
Ejecting pushing block and include outside plate, middle interconnecting piece and inner panel, this inner panel is slidably mounted in ejection cavity volume, connects in the middle of this The one end meeting portion connects with inner panel, the other end of this middle interconnecting piece through eject opening stretch out ejection cavity volume outer and with outside plate phase Connect;
One end contact ejecting stage clip ejects shell, ejects the other end contact inner panel of stage clip;
Ejecting pushing block to slide between a compression position and an ejected position, ejection stage clip makes ejection pushing block have and returns to ejection position The trend put;
When ear inserts slot from slot, ear presses on top outside plate to push away and make ejection pushing block slide into compressed-bit from ejected position Put.
A kind of limit rotation mechanism the most according to claim 5, it is characterised in that:
It is formed with a limit between inner side shell and middle case and turns room;
This lock rotation mechanism includes locking transcapsidation, lock turns bayonet lock, lock turns drive rod, lock turns bent axle, lock rotating cam, lock turn torsion spring, lock turns Stage clip and lock turn connecting rod;
Being provided with lock in this lock transcapsidation and turn cavity volume, this lock transcapsidation is provided with lock and turns the first opening and lock turns second opening, and this lock turns the One opening all turns cavity volume with lock with lock turn the second opening and connects;
This lock turns the lock that bayonet lock includes being connected together and turns bayonet lock and be slidably matched portion and lock turns bayonet lock protuberance, and it is sliding that this lock turns bayonet lock Dynamic auxiliary section is slidably mounted in lock and turns in cavity volume, and this lock turns bayonet lock protuberance and turns first opening from lock and stretch out in lock and turn cavity volume Outer and stretch into limit and turn in room, this lock turns the bayonet lock portion of being slidably matched and is provided with lock rotary wheel frame, and lock rotary wheel frame is provided with lock tumbler wheel;
This lock turns the lock that drive rod includes being connected together and turns drive rod and be slidably matched portion and lock turns drive rod protuberance, and this lock turns The drive rod portion of being slidably matched is slidably mounted in lock and turns in cavity volume, and this lock turns drive rod protuberance and stretches out from lock turn the second opening Turning cavity volume in lock outer and stretch in slot, this lock turns drive rod protuberance and is provided with lock and turns drive rod inclined-plane;
It is parallel that this lock turns the glide direction that the glide direction of bayonet lock turns drive rod with lock;
This lock turns bent axle and is rotatably installed on lock and turns in cavity volume, and this lock rotating cam is fixedly mounted in lock and turns on bent axle, this lock Turning bent axle and be provided with the rod journal of radial deflection, lock turns one end of connecting rod and is hinged on rod journal, and lock turns the other end of connecting rod It is hinged on lock to turn drive rod and be slidably matched in portion;
Having proximally and distally on the profile of this lock rotating cam, far-end is N from the distance of center of rotation of lock rotating cam, near-end from The distance of the center of rotation of lock rotating cam is M, wherein, N > M;
This lock turns stage clip and is arranged on lock and turns in cavity volume, and this lock turns one end contact lock transcapsidation of stage clip, and this lock turns the other end of stage clip Contact lock turns bayonet lock and is slidably matched portion, and this lock turns the profile holding of lock tumbler wheel and lock rotating cam that stage clip makes lock turn bayonet lock and connects Touch;
This lock turns torsion spring set and is contained in lock and turns on bent axle, and this lock turns an elastic arm of torsion spring and is arranged in lock transcapsidation, and this lock turns torsion spring Another elastic arm is arranged on lock and turns on bent axle, and lock turns torsion spring to be made lock turn bent axle to have the trend being rotated in the clockwise direction;
This lock turns and switches between a bayonet lock taboo indexing is put and the quasi-indexing of a bayonet lock is put when bayonet lock slides;
This lock turns bayonet lock and is in bayonet lock and prohibits indexing when putting, and lock tumbler wheel turns card with the distal contact on the profile of lock rotating cam, lock Pin protuberance stretches in the teeth groove of gear;
This lock turns bayonet lock and is in bayonet lock quasi-indexing when putting, and lock tumbler wheel turns card with the proximal contact on the profile of lock rotating cam, lock Pin protuberance exits the teeth groove of gear;
This lock turns and switches between a drive rod taboo indexing is put and the quasi-indexing of a drive rod is put when drive rod slides;
This lock turns drive rod and is in drive rod and prohibits indexing when putting, and this lock turns bayonet lock and is in bayonet lock and prohibits indexing and put;
This lock turns drive rod and is in drive rod quasi-indexing when putting, and this lock turns bayonet lock and is in the quasi-indexing of bayonet lock and puts;
Lock turn drive rod from drive rod prohibit indexing put to the quasi-indexing of drive rod put slip time, lock turn drive rod drive lock turn bent axle edge Rotate in an anti-clockwise direction, the profile of lock tumbler wheel edge lock rotating cam is from far-end proximal movement, and lock turns bayonet lock and prohibits indexing from bayonet lock Put and put slip to the quasi-indexing of bayonet lock;
Lock turn drive rod from the quasi-indexing of drive rod put to drive rod prohibit indexing put slip time, lock turn drive rod drive lock turn bent axle edge Rotationally clockwise, lock tumbler wheel is along the profile proximally distal movement of lock rotating cam, and lock turns bayonet lock from the indexing of bayonet lock quasi- Put and put slip to bayonet lock taboo indexing;
When ear inserts slot from slot, ear compresses lock and turns drive rod inclined-plane and make lock turn drive rod and turn from drive rod taboo Slip is put to the quasi-indexing of drive rod in position.
CN201610466330.9A 2016-06-21 2016-06-21 A kind of limit rotation mechanism Active CN105996274B (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4926854A (en) * 1987-06-26 1990-05-22 Sven Bode, Auergesellschaft GmbH Protective helmet with a strapless breathing protection mask
WO1995009675A3 (en) * 1993-10-01 1995-06-01 Rosenbauer Oesterr Gmbh Protective helmet with a gas-mask attachment device
WO1996012522A2 (en) * 1994-10-24 1996-05-02 Rosenbauer International Aktiengesellschaft Protective helmet with an attachment for a breathing mask
US8176913B2 (en) * 2008-12-02 2012-05-15 Rpb Safety, Llc Respirator helmet with quick release safety lens

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4926854A (en) * 1987-06-26 1990-05-22 Sven Bode, Auergesellschaft GmbH Protective helmet with a strapless breathing protection mask
WO1995009675A3 (en) * 1993-10-01 1995-06-01 Rosenbauer Oesterr Gmbh Protective helmet with a gas-mask attachment device
WO1996012522A2 (en) * 1994-10-24 1996-05-02 Rosenbauer International Aktiengesellschaft Protective helmet with an attachment for a breathing mask
US8176913B2 (en) * 2008-12-02 2012-05-15 Rpb Safety, Llc Respirator helmet with quick release safety lens

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Effective date of registration: 20191211

Address after: 314407 No. 501, Sangzi South Road, zhouwangmiao Town, Haining City, Jiaxing City, Zhejiang Province

Patentee after: Haining Qiantang New Rural Development Co., Ltd

Address before: 528400 Guangdong province Zhongshan City Shiqi District, North Hubin Road No. 68 building 4 Room 502 Lakeview Garden

Patentee before: Zhang Yulian