CN103037725B - Be fastened to especially for the ear protection device of the crash helmet of forest workers - Google Patents
Be fastened to especially for the ear protection device of the crash helmet of forest workers Download PDFInfo
- Publication number
- CN103037725B CN103037725B CN201180034635.8A CN201180034635A CN103037725B CN 103037725 B CN103037725 B CN 103037725B CN 201180034635 A CN201180034635 A CN 201180034635A CN 103037725 B CN103037725 B CN 103037725B
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- support bracket
- ear
- swivel plate
- acceptance division
- helmet
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Classifications
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- A—HUMAN NECESSITIES
- A42—HEADWEAR
- A42B—HATS; HEAD COVERINGS
- A42B3/00—Helmets; Helmet covers ; Other protective head coverings
- A42B3/04—Parts, details or accessories of helmets
- A42B3/16—Ear protection devices
-
- A—HUMAN NECESSITIES
- A42—HEADWEAR
- A42B—HATS; HEAD COVERINGS
- A42B3/00—Helmets; Helmet covers ; Other protective head coverings
- A42B3/04—Parts, details or accessories of helmets
- A42B3/10—Linings
- A42B3/14—Suspension devices
-
- A—HUMAN NECESSITIES
- A42—HEADWEAR
- A42B—HATS; HEAD COVERINGS
- A42B3/00—Helmets; Helmet covers ; Other protective head coverings
- A42B3/04—Parts, details or accessories of helmets
- A42B3/10—Linings
- A42B3/14—Suspension devices
- A42B3/142—Suspension devices with restraining or stabilizing means, e.g. nape straps
-
- A—HUMAN NECESSITIES
- A42—HEADWEAR
- A42B—HATS; HEAD COVERINGS
- A42B3/00—Helmets; Helmet covers ; Other protective head coverings
- A42B3/04—Parts, details or accessories of helmets
- A42B3/10—Linings
- A42B3/14—Suspension devices
- A42B3/145—Size adjustment devices
-
- A—HUMAN NECESSITIES
- A42—HEADWEAR
- A42B—HATS; HEAD COVERINGS
- A42B3/00—Helmets; Helmet covers ; Other protective head coverings
- A42B3/04—Parts, details or accessories of helmets
- A42B3/10—Linings
- A42B3/14—Suspension devices
- A42B3/147—Anchoring means
-
- A—HUMAN NECESSITIES
- A42—HEADWEAR
- A42B—HATS; HEAD COVERINGS
- A42B3/00—Helmets; Helmet covers ; Other protective head coverings
- A42B3/04—Parts, details or accessories of helmets
- A42B3/16—Ear protection devices
- A42B3/163—Wind or noise deflectors
-
- A—HUMAN NECESSITIES
- A42—HEADWEAR
- A42B—HATS; HEAD COVERINGS
- A42B3/00—Helmets; Helmet covers ; Other protective head coverings
- A42B3/04—Parts, details or accessories of helmets
- A42B3/16—Ear protection devices
- A42B3/166—Integral hearing protection
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- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Otolaryngology (AREA)
- Helmets And Other Head Coverings (AREA)
Abstract
Describe a kind of for being fastened to especially for the ear defenders (33) of the crash helmet (30) of forest workers.Described ear defenders (33) comprise two ear protection device (34a, 34b), and each ear protection device all has: support belt (37a, 37b), and it is had with forked patten's design the ear muffler be pivotally mounted on it; And swivel plate, it is connected to support belt (37a, 37b) by inclination joint, and this support belt (37a, 37b) can tilt to and shows position and swinging in position relative to this swivel plate two-way stable.This swivel plate is attached to by being rotatably arranged in the acceptance division (80a, 80b) of the helmet (30).Be disposed in band spring between swivel plate and support belt (37a, 37b) to support belt (37a, 37b) precharge pressure, to bear against showing position and swinging in the backstop of position of fixed support band.Described acceptance division (80a, 80b) is attached on the helmet (30) in inner side.Described ear protection device (34a, 34b) is therefore, it is possible to rotate in the stop position in the helmet.
Description
Technical field
The present invention relates to a kind of in order to be secured to especially for the ear protection device of the crash helmet of forest workers, this ear protection device comprises two ear defenders, each ear defenders include: forked support bracket, and ear muffler is pivotally supported on this forked support bracket; Swivel plate, this swivel plate by there to be the mode of joint (jointedly) to be connected to Support bracket, Support bracket can relative to this swivel plate two-way stable (bistably) tilt in extended position and retracted position; And acceptance division, this acceptance division can be attached to or be attached to the helmet, and swivel plate is rotatably supported in this acceptance division, and this acceptance division can between the operating position limited by backstop and stop position pivotable.
Background technology
From by the known this ear protection device of the DE102007011110A1 of reference in further detail below further.
From the known a kind of crash helmet comprising this ear protection device of document DE8714490U1.This crash helmet is made up of headpiece case and interior fittings.Interior fittings is made up of cross strap, utilizes this cross strap to wear the helmet on head, and this cross strap guarantees the impact absorbing distance between head and headpiece case.The helmet has at its outside place and surrounds the side direction portion of the helmet and the projection at rear portion, and this projection is provided with four recesses for fastening cross strap and other recess for the other attachment element that is fastened on lower edge.Can add or remove these other attachment elements as required.At the most width position place of the helmet, recess is arranged on the outside of the projection of the largest portion surrounding the helmet.Especially, this is the attachment location of ear protection device.Ear protection device is made up of two ear defenders comprising line bracket and ear muffler respectively.Together with face guard device, ear protection device to utilize the shared connector that is inserted in projection and is fixed to the outside of the helmet.In of this sort the helmet be equipped with disadvantageously, in use, the barrier of helmet process is bonded on after the bracket of ear muffler, and the wearer of the helmet in hindering one's work in this way or may from his or his head tear the helmet and make wearer be in danger thus.
The device in the outside for ear muffler being attached to crash helmet is comprised from the ear protection device that the DE102007011110A1 mentioned in beginning is known.Here; with reference to so a kind of crash helmet; wherein helmet designs is so customized acquiescently, that is: make two ear defenders can on every side of the helmet, this helmet edge, be set up in slit in the helmet etc., above ear location, be attached to the outside of the helmet to releasably.For this purpose, acceptance division or each ear defenders are formed to make this acceptance division or each ear defenders buckle can be utilized fastening and be fixed in slit.Wear ear defenders with operating position during operation, in operating position, ear muffler is in wherein this ear muffler and closely abuts in the retracted position of ear.If ear protection device is temporarily unwanted words, then ear defenders can be moved in standby position by from operating position.In this position, ear muffler be arranged in wherein this ear muffler to be still positioned at above ear but away from the extended position of the outside pivotable of ear.Ear muffler can also be maintained in this position, such as to make it possible to talk with during operation.Finally, exist and stop or stop position, for ear defenders.In stop position, ear muffler is from operating position towards rear side upwards pivotable and being in the outside of the helmet.In order to make ear muffler can move in stop position through helmet edge, require first ear defenders to be placed in standby position.Utilize two hyoplastron spring to make in extended position or retracted position, keep each ear muffler to be possible, the Support bracket of ear muffler is connected to the swivel plate of ear defenders there to be the mode of joint and to have two two-way stable positions by this pair of hyoplastron spring.
A known ear protection device problem to be solved is the Support bracket keeping comprising ear muffler in stop position, because ear muffler tends to due to gravity be rotated down and return standby position from stop position.In order to prevent this being rotated down, common, Support bracket is pivoted to inner side in the stop position of user's Support bracket this Support bracket acclivitous wherein, thus makes two-way stable leaf spring, from outside, ear muffler is expressed to headpiece case.In like fashion, such as, when Support bracket is installed on the helmet, on the helmet, create relatively large power, this generates the risk that the helmet and/or Support bracket are damaged.The secure localization that therefore known ear protection device is formed in the resupinate stop position making each ear muffler outside the helmet is achieved.For this reason, acceptance division comprises projection, and this projection is basically parallel to rotating shaft and gives prominence to, and when abutting the Support bracket in known ear protection device, this projection limits the motion of swivel plate in special position of rotation.In known ear protection device; use due to two-way stable leaf spring makes the solution of problem complicated; in fact this two-way stable leaf spring should make Support bracket can take stretching out or retraction attitude of restriction together with ear muffler in operating position or standby position; but simultaneously for Support bracket is connected to swivel plate there to be the mode of joint, and therefore can not have the shear points that limits exactly and can not guarantee that the pressure of the restriction of ear muffler on ear applies in the situation that the head sizes of helmet user is different.Because the joint connection that has between Support bracket and swivel plate is only set up by two-way stable leaf spring and depends on two two-way stable end positions of this two-way stable leaf spring, so Support bracket neither has the extended position limited exactly also do not have the retracted position limited exactly, which hinders and ear protection device is adjusted to different head sizes.
By means of by the backstop of supported by plate spring abutted against in the projection of acceptance division, achieve and fix ear defenders in stop position.But this support depends on the friction of leaf spring in projection and may therefore change along with the time.Therefore power along the direction towards the operating position required on swivel plate in order to described backstop is shifted out bonding station can reduce along with the time, thus however user may still be attempted by inside for ear defenders pivotable made ear muffler be pressed against from outside in stop position on the outside of helmet headpiece case to prevent Support bracket unexpected being rotated down by means of ear muffler.
Summary of the invention
The object of the invention is to design a kind of there is the type mentioned in beginning ear protection device thus eliminate the problems referred to above; namely; specifically eliminate following risk: due to be attached to the helmet ear protection device in use the helmet may be stuck on barrier, and ear defenders unexpectedly can rotate from stop position and get back to protective position.
According to the present invention, realize this object as follows: utilize by the interconnective Support bracket of inclination joint and swivel plate, the sloping shaft of this inclination joint is through Support bracket and swivel plate; Vicinity is utilized to be arranged on the yoke spring of the inclination joint between swivel plate and the free end of Support bracket to Support bracket precharge pressure, with abut against limit extended position and retracted position other backstop on, to realize the two-way stable tilt capability of this yoke spring thus; And utilize acceptance division, this acceptance division is designed to be attached on the inner side of the helmet.
According to the present invention, acceptance division is installed on the inner side of the helmet, makes ear muffler and the Support bracket be associated generally within the circumference of crash helmet.Therefore the helmet does not provide and makes barrier such as branch etc. be stuck in any possibility on the outside of the helmet.If do not need ear protection device, then ear defenders can rotate in stop position backward, and this stop position, in the circumference of crash helmet, is positioned at the helmet.
Due to except Support bracket and ear muffler, the inner side of the helmet is attached on the inner side of headpiece case the acceptance division of each ear defenders particularly, the barrier institute externally applied forces preventing the helmet to contact.And then, because acceptance division is installed on the inner side of the helmet, Support bracket can in the gap between headpiece case and interior fittings between standby position and stop position pivotable, that is, Support bracket is always positioned at the circumference of headpiece case.Correspondingly, Support bracket and ear muffler all do not provide any seizure or abutment to barrier in any position.
Due to the fact that, namely, in each ear defenders of ear protection device according to the present invention, Support bracket and swivel plate are interconnected by inclination joint, the sloping shaft of this inclination joint, through Support bracket and swivel plate, is eliminated for the defect caused with the two-way stable leaf spring having the mode of joint and be connected to swivel plate by Support bracket.In ear protection device according to the present invention, sloping shaft is formed not along with the pivot of the restriction of time change.And then, according to the present invention, contiguous inclination joint between swivel plate and the free end of Support bracket is located and the yoke spring of Support bracket precharge pressure is only guaranteed to the foundation of the power between Support bracket and swivel plate, that is, this yoke spring does not side by side limit extended position and the retracted position of Support bracket.These positions are actually to be determined by the backstop limited.Yoke spring is only provided for the power towards these backstop movable support brackets.Therefore, yoke spring, together with other backstop, is set up the final position for the restriction of Support bracket and between the backstop limited, therefore guarantees the two-way stable tilt capability of this yoke spring when this Support bracket stretches out and retracts.
In ear protection device according to the present invention, yoke spring does not have the function of the joint that support Support bracket, but only for setting up power, by means of this power, Support bracket can be maintained in the extended position of restriction and the retracted position of restriction in other backstop.Ear defenders are alleviated from the unexpected problem be rotated down of stop position downwards consumingly along the direction of standby position, if eliminated by ear protection device according to the present invention not yet because ear muffler by the inner side being arranged in the helmet and on the outside of the interior fittings of the helmet of stop position and by therefore have significantly reduce due to the pressure from both sides from the trend that stop position is rotated down.
The theme of dependent claims is formed according to the favourable embodiment of ear protection device of the present invention.
In an embodiment of ear protection device according to the present invention, for regulate rotatably to be arranged in swivel plate by the eccentric bolt that yoke spring is applied to the initial load of Support bracket and with yoke spring contact.Therefore, it is possible to regulate the amplitude of the power being used for the ear muffler being pressed against ear in the retracted position of Support bracket in a straightforward manner.
In the further embodiment of ear protection device according to the present invention, by compression spring along the slide block of the direction precharge pressure towards swivel plate by so that the free end of Support bracket can be supported on by displacement mode, described slide block comprises maintenance projection, this maintenance projection can contact with the slider path on acceptance division, and in the retracted position of this Support bracket, Support bracket prevents this maintenance projection to be shifted, and in the extended position of this Support bracket, Support bracket does not prevent this maintenance projection to be shifted, and described slide block utilizes the joint in the recess in the slider path of acceptance division to be remained in its stop position by Support bracket to releasably.Kept engaging with rotating disc by the slide block of the spring precharge pressure position that the free end of Support bracket is bonded in the recess of slide block wherein in an embodiment of the present invention.One of recess other backstop therefore forming the retracted position limiting Support bracket of slide block.On the other hand, the free end of Support bracket abuts the rotating disc in recess, and therefore this recess forms one of other backstop and limit the extended position of Support bracket.In this extended position, slide block can the power of renitency spring on the direction relative with swivel plate along the slider path on acceptance division at Support bracket superior displacement, thus make to comprise swivel plate Support bracket can in acceptance division pivotable and the Support bracket comprising ear muffler can be arranged in stop position.
In the further embodiment of ear protection device according to the present invention, formed in acceptance division and at least extend beyond semicircle, for holding the groove of the circular arc shoulder of swivel plate.During the rotation of swivel plate, swivel plate is directed in acceptance division.
In the further embodiment of ear protection device according to the present invention, the elasticity whip graft given prominence to from acceptance division is combined in the complimentary recess swivel plate, to lock being bonded with each other of acceptance division and swivel plate, and be disposed in swivel plate for the button discharging stationary state.Support bracket can be fastening and be locked into place and be released by action button by buckle together with the swivel plate in acceptance division of this Support bracket in like fashion.
Accompanying drawing explanation
With reference to accompanying drawing, embodiments of the invention will be described in further detail below, wherein:
Fig. 1 illustrates the crash helmet comprised according to ear protection device of the present invention, headpiece case shown in cross sectional view, and in standby position, namely away from ear pivotable position shown in form two ear defenders of ear protection device;
Fig. 2 illustrates the crash helmet according to Fig. 1, but in operating position, that is, ear defenders shown in the position of ear being retracted;
Fig. 3 illustrates the side view of the crash helmet according to Fig. 2;
Fig. 4 illustrates the crash helmet according to Fig. 3, but ear protection device according to the present invention to be pivoted in stop position and to be accommodated in the helmet;
Fig. 5 illustrates the view of the crash helmet according to Fig. 4 seen from below, and the only ear defenders on side according to ear protection device of the present invention are shown;
Fig. 6 illustrates the front view according to one of two ear defenders of ear protection device of the present invention;
Fig. 7 illustrates the front view of the ear defenders according to Fig. 6;
The ear defenders according to Fig. 6 and Fig. 7 that Fig. 8 illustrates in standby position with side view;
Fig. 9 illustrates the rearview of the ear defenders according to Fig. 6;
Figure 10 illustrates the longitudinal cross-section view on the top of the ear defenders according to Fig. 8;
Figure 11 A illustrates that these ear defenders are pivoted in stop position according to the top of the ear defenders of Fig. 7 together with acceptance division;
Figure 11 B illustrates the side view of the ear defenders according to Figure 11 A;
Figure 12 A illustrates the ear defenders according to Figure 11 A be pivoted back in standby position;
Figure 12 B illustrates the side view of the ear defenders according to Figure 12 A;
Figure 13 A illustrates according to Figure 12 A but the ear defenders be in operating position;
Figure 13 B illustrates the ear defenders according to Figure 13 A with side view; And
Figure 14 is in perspective diagram and the headpiece case of the crash helmet according to Fig. 5 is shown as details in the angled view seen from below; for the sake of clarity, interior fittings is not illustrated and the acceptance division of only ear defenders of the inner side being attached to headpiece case is shown.
Detailed description of the invention
Different indicate depending on there is shown its entirety by 30 and comprise the crash helmet according to ear protection device 33 of the present invention being designed to especially use in forestry in Fig. 1 to Fig. 5 and Figure 14.Ear protection device 33 comprises two ear defenders 34a, 34b.Crash helmet 30 comprises headpiece case 36 and indicates by 40 on the whole and comprise the internal engagement sub-component of support cages 42, headband 44 and neckstrap 46.Neckstrap 46 is provided with the tie unit indicated by 48 on the whole.
The device that the bikini that three support arms being formed spacer portion that wherein only support arm 54 and 55 can be seen in fig 1 and 2 are used as interior fittings or internal engagement sub-component 40 and headpiece case 36 is attached.(namely the size of headpiece case 36 is accordingly dimensioned such, the inner width of headpiece case is by so long and so broadly determine size) and the size of support arm and layout be confirmed as making, between internal engagement sub-component 40 and headpiece case 36, there is ear muffler 35a, 35b for holding ear defenders 34a or 34b and other helmet annex and the gap 60 for the erecting device of ear protection device 33.Other helmet annex comprises the above-mentioned tie unit 48 of neckstrap 46.Relative to ear protection device 33, gap 60 be confirmed as making if see in Figure 5 such, in stop position, ear muffler 35a, 35b abut the inner side of headpiece case 36 and the outside of internal engagement sub-component 40.
Erecting device for ear protection device 33 comprises two acceptance divisions 80a, 80b of the inner side being attached to headpiece case 36.Acceptance division 80a, 80b are that the pivotable for Support bracket 37a, 37b together with ear muffler 35a or 35b as described in further detail further below supports.Acceptance division 80a, 80b are formed on the inner side of headpiece case 36 as the support cup of pivotable supporting respectively, or, preferably, be tightly fitted as other parts.
Referring now to accompanying drawing, referring to figs. 1 to Fig. 5 and Figure 14, ear protection device 33 is described in further detail particularly.Figure 14 does not have the headpiece case 36 of internal engagement sub-component 40 shown in the angled view seen from below, illustrates the position of acceptance division 80a on the inner side of headpiece case 36 especially.Another acceptance division 80b that can not see is attached to that side relatively with being reversed.Fig. 1 illustrates the crash helmet 30 with the ear protection device 33 be arranged on both sides, and headpiece case 36 shown in cross sectional view, and under the state of stretching out, that is, illustrates ear defenders 34a, 34b away under the state of ear pivotable in standby position.Fig. 2 illustrates the crash helmet according to Fig. 1, but, ear defenders 34a, 34b are shown under the retracted mode in operating position on ear.Fig. 3 illustrates the side view of the crash helmet according to Fig. 2.Fig. 4 illustrates the crash helmet according to Fig. 3, but, ear defenders 34a, the 34b when being pivoted to backward in stop position and be accommodated in the helmet 30 is shown.
Two ear defenders 34a, 34b comprise respectively by two ear mufflers 35a, 35b being pivotally supported in forked support bracket 37a or 37b.The inner side of headpiece case 36 is provided with by acceptance division 80a, 80b of being attached securely.In acceptance division 80a, 80b, utilize if see in Fig. 6 to Figure 13 such by with swivel plate 39a or 39b having the mode of joint to be attached to the free end of Support bracket 37a, 37b, Support bracket 37a, 37b are rotatably supported.Acceptance division 80a, 80b and Support bracket 37a, 37b are arranged and are formed as making Support bracket 37a, 37b can pivotable between two positions in gap 60, that is, wherein ear muffler 35a, 35b shown in Fig. 2 and Fig. 3 are accommodated in the stop position in the gap 60 in the helmet 30 away from wherein ear muffler 35a, the 35b shown in the operating position of ear pivotable and Fig. 4.
Each Support bracket 37a, 37b to be designed in the region between the two ends of this Support bracket 37a, 37b by spring precharge pressure and can to bend, in this region, this Support bracket 37a, 37b extend in gap 60, thus make ear muffler 35a, 35b as shown in Figure 1 respectively in the non-bent positions of each Support bracket 37a, 37b away from ear pivotable, and to be as illustrated in Figure 2ly pivoted on ear in the bending position of Support bracket 37a, 37b respectively.If crash helmet 30 is not worn on head, then two ear mufflers 35a, 35b to arrive the ear that abuts thereon than each ear muffler 35a, 35b respectively significantly more to the position of inner position.In other words, in this case, the distance between ear muffler is less than the distance between ear significantly.In like fashion, ensure that ear muffler 35a, 35b keep extruding ear by spring preload when wearing the helmet 30.Spring preload for bending each Support bracket 37a, 37b between the position (two-way stable) that limits at two applies (if such as see in the figure 7 such) by yoke spring 92a, 92b of circularly bending.Each Support bracket 37a, 37b can be manually moved in retracted position and in extended position.In each position in these positions, yoke spring 92a or 92b cooperatively realizes final position with the backstop be further described below respectively and locks.If worn the helmet and each ear muffler 35a, 35b will be kept flexibly to extrude ear, then should not reach the final position locking of Support bracket 37a, 37b.
In addition, each acceptance division 80a, 80b and each Support bracket 37a, 37b of comprising swivel plate 39a, 39b are formed to make Support bracket can only from the pivotable backward of position shown in Fig. 1.In like fashion, ensure that ear muffler 35a, 35b can be accommodated in gap 60 when not colliding with the lower limb of ear and headpiece case 36 after ear.Fig. 6 illustrates the rearview of ear defenders 34a, 34b of ear protection device 33.Ear defenders 34a and 34b is identically formed, that is, can install on the right side of the helmet 30 and left side.Unique difference is the design of acceptance division 80a, 80b, because this acceptance division 80a, 80b have the slider path 86a, the 86b that more and more decline along backward directions.Acceptance division 80a shown in Figure 14.Also acceptance division 80a shown in Figure 11 to Figure 13.
According to diagram in the figure 7, ear muffler 35a, 35b are pivotally supported on forked support bracket 37a, 37b.Swivel plate 39a, 39b utilize inclination joint 82a, the 82b that can see in fig. 8 and by there to be the mode of joint to be connected to Support bracket 37a, 37b.Inclination joint 82a, 82b are formed sloping shaft 84a, 84b, and sloping shaft 84a, 84b are formed to be inserted in the rod axis in the hole in Support bracket 37a, 37b and swivel plate 39a, 39b, therefore through Support bracket and swivel plate.Due to inclination joint 82a, 82b of existing, if ear defenders 34a, 34b are arranged in these ear defenders 34a, 34b position on ear, then Support bracket 37a, 37b can tilt in extended position (standby position) with in retracted position (operating position).In the operating position shown in Figure 13, ear muffler 35a, 35b abut against on ear.Alternately, ear defenders 34a, 34b can occupy these ear defenders 34a, 34b and stretch out namely wherein ear muffler wherein and be not pressed against the standby position of ear.This standby position is shown in Figure 12.According in the operating position of Figure 13, ear defenders 34a, 34b only can in the angular range reduced pivotable.According in the standby position of Figure 12, ear defenders 34a, 34b can be pivoted in the stop position shown in Figure 11.In order to indicative reason, shown in Figure 10 to Figure 13, be also usually securely attached to the inner side of the helmet 30, acceptance division 80a, 80b on the inner side being headpiece case 36 that more speaks by the book.Swivel plate 39a, 39b to be rotatably supported in acceptance division 80a, 80b and can between the standby position according to Figure 12 and the stop position according to Figure 11 pivotable.Operating position and stop position are limited by the backstop that will be described in greater detail below.
In the standby position of ear defenders 34a, 34b shown in Figure 12, free end 38a, 38b away from ear pivotable of Support bracket 37a, 37b are remained on backstop 41a, 41b by the precharge pressure of yoke spring 92a, 92b of being formed by cover plate 51a, 51b of being rigidly connected to swivel plate 39a, 39b.The initial load of yoke spring 92a, 92b keeps Support bracket 37a, 37b stably to abut against on backstop 41a, 41b.Contrary with backstop 41a, 41b, free end 38a, 38b that acceptance division 80a, 80b have wherein Support bracket 37a, 37b can be pivoted to recess 89a, 89b the operating position shown in Figure 13 B from the standby position shown in Figure 12 B.The wall in the face of backstop 41a, 41b of acceptance division 80a, 80b forms another backstop 43a, 43b, in the operating position shown in Figure 13 B, free end 38a, 38b of Support bracket 37a, 37b remain on described another backstop 43a, 43b by the initial load of yoke spring 92a, 92b.Support bracket 37a, 37b of being hinged to swivel plate 39a, 39b utilize free end 38a, 38b of this Support bracket 37a, 37b to stop Support bracket 37a, 37b to rotate in the stop position shown in Figure 11 in operating position.
Swivel plate 39a, 39b's can pivotal capability and can not pivotal capability being determined by slide block 98a, 98b shown in the cross sectional view in Figure 10 to Figure 13.Slide block 98a, 98b above free end 38a, 38b of Support bracket 37a, 37b by with can displacement mode be supported on swivel plate 39a, 39b extension on and by compression spring 98a, 98b along the direction precharge pressure towards swivel plate 39a, 39b.Acceptance division 80a, 80b are provided with slider path 86a, 86b in its lower edge.In Figure 10 to Figure 13, the acceptance division 80a be installed on the left side medial surface of the helmet is only shown.Correspondingly, slider path is only marked by 86a in these figures.Slide block 98a, 98b comprise and keep projection 88a, 88b, this maintenance projection 88a, 88b can contact with slider path 86a, 86b at acceptance division 80a, 80b place, and in the retracted position according to Figure 13 B of Support bracket 37a, 37b, Support bracket 37a, 37b prevent this maintenance projection 88a, 88b to be shifted, but at this Support bracket 37a, 37b according to not preventing this maintenance projection 88a, 88b to be shifted in the extended position of Figure 11 and 12.Be placed at not anti-limited slip block 98a, 98b displacement of Support bracket 37a, 37b in extended position, and by engaging in recess 87a, the 87b in the slider path 86a, 86b of acceptance division 80a, 80b, Support bracket 37a, 37b remain in its stop position by slide block 98a, 98b to releasably.Slide block 98a, 98b are displaced to the stop position according to Figure 11 from according to the standby position of Figure 12 by rotary motion.Slide block 98a, 98b of displacement no longer allow Support bracket 37a, 37b along the direction of operating position, that is, along the direction pivotable of the retracted position of Support bracket 37a, 37b.According in the standby position of Figure 12, slide block 98a, 98b are freely, and Support bracket 37a, 37b are therefore, it is possible to be pivoted in the stop position according to Figure 11.According in the operating position of Figure 13, slide block 98a, 98b can not be shifted, thus Support bracket 37a, 37b of comprising ear muffler 35a, 35b can not be pivoted in stop position.Only not abut against from free end 38a, 38b of being pivoted back to wherein Support bracket 37a, 37b according to the operating position of Figure 13 at Support bracket 37a, 37b and backstop 88a, 88b just produce this pivotal capability again according to time in the standby position of Figure 12.
In acceptance division 80a, 80b, form groove 85a, 85b, this groove 85a, 85b at least extend beyond semicircle and if such circular arc shoulder 49a, 49b for holding swivel plate 39a, 39b seen in Fig. 10.In Fig. 10, that can see further is such, and acceptance division 80a, 80b comprise towards outstanding elasticity tongue 81a, the 81b of swivel plate 39a, 39b.Elasticity tongue 81a, 81b are bonded in complimentary recess 83a, the 83b in swivel plate 39a, 39b, to lock being bonded with each other of acceptance division 80a, 80b and swivel plate 39a, 39b.In swivel plate 39a, 39b, be provided with button 50a, the 50b for discharging restrained condition.As button 50a, 50b in application drawing 9, elasticity tongue 81a, 81b in Figure 10 are promoted to the right, thus at acceptance division 80a, 80b with the buckle between swivel plate 39a, 39b is fastening is again discharged.
Each ear muffler 35a, 35b bend in spill on the side of ear in a longitudinal direction at it, make this ear muffler more can be easy to adapt to the shape of ear and head.This causes the pressure distribution on ear to be improved, and makes it possible to apply combined with the pressure reduced, and stops entering of noise better.
Reference numerals list
30 crash helmets
33 ear protection device
34a, 34b ear defenders
35a, 35b ear muffler
36 headpiece cases
37a, 37b Support bracket
38a, 38b free end
39a, 39b swivel plate
40 internal engagement sub-components
41a, 41b backstop (standby position, Support bracket)
42 support cages
The backstop (operating position, Support bracket) that 43a, 43b are other
44 headbands
46 neckstrap
48 tie unit
49a, 49b circular arc shoulder
50a, 50b button
51a, 51b cover plate
54 support arms
55 support arms
60 gaps
80a, 80b acceptance division
81a, 81b elasticity tongue
82a, 82b inclination joint
83a, 83b complimentary recess
84a, 84b sloping shaft
85a, 85b groove
86a, 86b slider path
87a, 87b recess
88a, 88b keep projection
89a, 89b recess
92a, 92b yoke spring
94a eccentric bolt
96a, 96b compression spring
98a, 98b slide block
Claims (5)
1., in order to be secured to an ear protection device for crash helmet (30), comprise two ear defenders (34a, 34b), each described ear defenders include:
-forked support bracket (37a, 37b), ear muffler (35a, 35b) is pivotally supported on described forked support bracket (37a, 37b),
-swivel plate (39a, 39b), described swivel plate (39a, 39b) is by there to be the mode of joint to be connected to described Support bracket (37a, 37b), described Support bracket (37a, 37b) can be tilted in extended position and retracted position by two-way stable relative to described swivel plate, and
-acceptance division (80a, 80b); described acceptance division (80a, 80b) can be attached to or be attached to the helmet (30); described swivel plate (39a, 39b) is rotatably supported in described acceptance division; and described acceptance division can between the protective position limited by backstop and stop position pivotable
It is characterized in that, described Support bracket (37a, 37b) and described swivel plate (39a, 39b) are interconnected by inclination joint (82a, 82b), the sloping shaft (84a, 84b) of described inclination joint is through described Support bracket (37a, 37b) and described swivel plate (39a, 39b)
Be adjacent to yoke spring that the described inclination joint (82a, 82b) between described swivel plate (39a, 39b) and the free end (38a, 38b) of described Support bracket (37a, 37b) arranges to described Support bracket precharge pressure, with abut against limit described extended position and described retracted position other backstop on, and guarantee the tilt capability of the two-way stable of described Support bracket in like fashion, and
Described acceptance division (80a, 80b) is designed to the inner side being attached to the described helmet (30).
2. ear protection device according to claim 1, it is characterized in that comprising eccentric bolt (94a, 94b), described eccentric bolt to be rotatably arranged in described swivel plate (39a, 39b) and to be contacted with described yoke spring (92a, 92b), to regulate the initial load being applied to described Support bracket (37a, 37b) by described yoke spring (92a, 92b).
3. ear protection device according to claim 1 and 2, is characterized in that, at described Support bracket (37a, described free end (38a 37b), 38b) place, by compression spring (96a, 96b) along towards described swivel plate (39a, slide block (the 98a of direction precharge pressure 39b), 98b) by so that described swivel plate (39a can be supported on by displacement mode, on extension 39b), described slide block comprises maintenance projection, described maintenance projection can with described acceptance division (80a, slider path contact 80b), and in the retracted position of described Support bracket, described Support bracket (37a, 37b) described maintenance projection is prevented to be shifted, and in the extended position of described Support bracket, described Support bracket (37a, 37b) do not prevent described maintenance projection to be shifted, and described slide block pass through at described acceptance division (80a, recess (87a in described slider path 80b), joint 87b) is to releasably by described Support bracket (37a, 37b) remain in described stop position.
4. ear protection device according to claim 1 and 2, it is characterized in that comprising groove, described groove to be formed in described acceptance division (80a, 80b) and at least to extend beyond semicircle, to receive the circular arc shoulder (49a, 49b) of described swivel plate (39a, 39b).
5. ear protection device according to claim 4, it is characterized in that comprising elasticity tongue (81a, 81b), described elasticity tongue is outstanding to be bonded in the complimentary recess (83a, 83b) described swivel plate (39a, 39b) from described acceptance division (80a, 80b), to lock being bonded with each other of described acceptance division (80a, 80b) and described swivel plate (39a, 39b), and discharge hold mode by the button (50a, 50b) be arranged in described swivel plate (39a, 39b).
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102010026997A DE102010026997A1 (en) | 2010-07-13 | 2010-07-13 | Hearing protection for attachment to a protective helmet, in particular for forestry workers |
| DE102010026997.2 | 2010-07-13 | ||
| PCT/EP2011/061882 WO2012007475A1 (en) | 2010-07-13 | 2011-07-12 | Ear defenders for fastening to a protective helmet, in particular for forestry workers |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103037725A CN103037725A (en) | 2013-04-10 |
| CN103037725B true CN103037725B (en) | 2015-11-25 |
Family
ID=44509811
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201180034635.8A Active CN103037725B (en) | 2010-07-13 | 2011-07-12 | Be fastened to especially for the ear protection device of the crash helmet of forest workers |
Country Status (23)
| Country | Link |
|---|---|
| US (1) | US20130219598A1 (en) |
| EP (1) | EP2506731B8 (en) |
| JP (1) | JP6046614B2 (en) |
| KR (1) | KR101906611B1 (en) |
| CN (1) | CN103037725B (en) |
| AU (1) | AU2011278351B2 (en) |
| BR (1) | BR112013000582B1 (en) |
| CA (1) | CA2804479C (en) |
| CL (1) | CL2013000121A1 (en) |
| DE (1) | DE102010026997A1 (en) |
| DK (1) | DK2506731T3 (en) |
| EA (1) | EA025775B1 (en) |
| ES (1) | ES2450146T3 (en) |
| HR (1) | HRP20140165T1 (en) |
| MX (1) | MX2013000462A (en) |
| MY (1) | MY184589A (en) |
| NZ (1) | NZ606390A (en) |
| PE (2) | PE20150298A1 (en) |
| PL (1) | PL2506731T3 (en) |
| SI (1) | SI2506731T1 (en) |
| UA (1) | UA107842C2 (en) |
| WO (1) | WO2012007475A1 (en) |
| ZA (1) | ZA201300325B (en) |
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| DE102012000370B4 (en) * | 2012-01-11 | 2017-02-02 | Pfanner Schutzbekleidung Gmbh | Hard hat, especially for mountaineers and tree climbers |
| US9693595B2 (en) * | 2012-01-27 | 2017-07-04 | Revision Military S.A.R.L. | Helmet earpiece |
| US9339075B2 (en) * | 2013-08-09 | 2016-05-17 | Larry D. Ratliff | Cap hearing protection system |
| EP3094199B1 (en) * | 2014-01-14 | 2019-07-24 | Gentex Corporation | Pivot-arm assembly for a helmet mounted headset |
| EP3136899B1 (en) | 2014-05-02 | 2021-03-03 | 3M Innovative Properties Company | Ear muff attachment having dual axis of rotation |
| USD741550S1 (en) | 2014-05-02 | 2015-10-20 | 3M Innovative Properties Company | Ear muff attachment arm |
| US9596902B2 (en) * | 2014-05-30 | 2017-03-21 | 3M Innovative Properties Company | Earmuff accommodating welding shield |
| CA3016405C (en) | 2015-03-03 | 2023-11-14 | Valley Children's Healthcare | Cranium cuddler |
| WO2016179369A1 (en) | 2015-05-07 | 2016-11-10 | Impact Labs Llc | Device for minimizing impact of collisions for a helmet |
| DE102016100086A1 (en) * | 2016-01-04 | 2017-07-06 | Pfanner Schutzbekleidung Gmbh | Earmuffs, communication system and safety helmet |
| EP3340643A1 (en) * | 2016-12-21 | 2018-06-27 | Safariland, LLC | Rail connector for earcup suspension assembly |
| CA2991866C (en) * | 2017-01-16 | 2020-03-24 | Safariland, Llc | Wireform attachment mechanism |
| CN115153144A (en) * | 2017-01-25 | 2022-10-11 | 贝尔运动股份有限公司 | Helmet integrated with shoulder pad |
| EP3481243B1 (en) * | 2017-02-21 | 2020-11-11 | Unit 1 Gear, Inc. | Headphone and helmet assembly |
| USD876017S1 (en) * | 2017-05-10 | 2020-02-18 | 3M Innovative Properties Company | Attachment arm |
| CN107462356B (en) * | 2017-08-08 | 2023-03-14 | 贵州大学 | Mine pressure gauge protection device |
| USD866084S1 (en) * | 2018-05-18 | 2019-11-05 | Gentex Corporation | Headset mount arm |
| FR3083441B1 (en) * | 2018-07-06 | 2020-06-19 | Msa Europe Gmbh | HEARING PROTECTION DEVICE |
| US10912344B2 (en) * | 2018-12-03 | 2021-02-09 | Msa Technology, Llc | Helmet with accessory attachment rail |
| RU190133U1 (en) * | 2018-12-21 | 2019-06-21 | Общество с ограниченной ответственностью "СТ-Логистик" | EARPHONE |
| WO2020230102A1 (en) * | 2019-05-16 | 2020-11-19 | Locatelli S.P.A. | Protective helmet |
| DE102022123348A1 (en) | 2022-09-13 | 2024-03-14 | Schuberth Gmbh | Hard hat |
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2010
- 2010-07-13 DE DE102010026997A patent/DE102010026997A1/en not_active Withdrawn
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2011
- 2011-07-12 WO PCT/EP2011/061882 patent/WO2012007475A1/en active Application Filing
- 2011-07-12 US US13/808,803 patent/US20130219598A1/en not_active Abandoned
- 2011-07-12 PE PE2014002216A patent/PE20150298A1/en active IP Right Grant
- 2011-07-12 EA EA201300114A patent/EA025775B1/en not_active IP Right Cessation
- 2011-07-12 NZ NZ606390A patent/NZ606390A/en unknown
- 2011-07-12 EP EP11731354.4A patent/EP2506731B8/en active Active
- 2011-07-12 CN CN201180034635.8A patent/CN103037725B/en active Active
- 2011-07-12 MX MX2013000462A patent/MX2013000462A/en active IP Right Grant
- 2011-07-12 BR BR112013000582-3A patent/BR112013000582B1/en active IP Right Grant
- 2011-07-12 ES ES11731354.4T patent/ES2450146T3/en active Active
- 2011-07-12 CA CA2804479A patent/CA2804479C/en active Active
- 2011-07-12 MY MYPI2013700058A patent/MY184589A/en unknown
- 2011-07-12 AU AU2011278351A patent/AU2011278351B2/en active Active
- 2011-07-12 DK DK11731354.4T patent/DK2506731T3/en active
- 2011-07-12 SI SI201130122T patent/SI2506731T1/en unknown
- 2011-07-12 JP JP2013519078A patent/JP6046614B2/en active Active
- 2011-07-12 PE PE2013000064A patent/PE20131199A1/en not_active Application Discontinuation
- 2011-07-12 KR KR1020137003446A patent/KR101906611B1/en active IP Right Grant
- 2011-07-12 PL PL11731354T patent/PL2506731T3/en unknown
- 2011-12-07 UA UAA201301671A patent/UA107842C2/en unknown
-
2013
- 2013-01-11 CL CL2013000121A patent/CL2013000121A1/en unknown
- 2013-01-14 ZA ZA2013/00325A patent/ZA201300325B/en unknown
-
2014
- 2014-02-21 HR HRP20140165AT patent/HRP20140165T1/en unknown
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| US4069512A (en) * | 1975-05-12 | 1978-01-24 | Tore Georg Palmaer | Locating device for ear-muffs on helmets |
| DE102007011110A1 (en) * | 2006-03-10 | 2007-09-13 | Ab Kompositprodukter Vikmanshyttan | Arrangement is for fixture and retention of an ear protective cap to helmet and comprises cap holder part and helmet |
Also Published As
| Publication number | Publication date |
|---|---|
| BR112013000582B1 (en) | 2020-09-29 |
| MY184589A (en) | 2021-04-06 |
| JP6046614B2 (en) | 2016-12-21 |
| UA107842C2 (en) | 2015-02-25 |
| DE102010026997A1 (en) | 2012-01-19 |
| US20130219598A1 (en) | 2013-08-29 |
| PE20150298A1 (en) | 2015-03-04 |
| AU2011278351A1 (en) | 2013-02-14 |
| KR101906611B1 (en) | 2018-10-10 |
| NZ606390A (en) | 2015-02-27 |
| PE20131199A1 (en) | 2013-11-20 |
| PL2506731T3 (en) | 2014-05-30 |
| AU2011278351B2 (en) | 2016-06-09 |
| SI2506731T1 (en) | 2014-04-30 |
| EA201300114A1 (en) | 2013-07-30 |
| DK2506731T3 (en) | 2014-03-03 |
| ZA201300325B (en) | 2014-03-26 |
| EA025775B1 (en) | 2017-01-30 |
| CN103037725A (en) | 2013-04-10 |
| KR20130135231A (en) | 2013-12-10 |
| ES2450146T3 (en) | 2014-03-24 |
| WO2012007475A1 (en) | 2012-01-19 |
| EP2506731B8 (en) | 2015-11-04 |
| CL2013000121A1 (en) | 2013-07-19 |
| CA2804479A1 (en) | 2012-01-19 |
| EP2506731A1 (en) | 2012-10-10 |
| HRP20140165T1 (en) | 2014-03-28 |
| CA2804479C (en) | 2018-03-20 |
| EP2506731B1 (en) | 2013-12-04 |
| MX2013000462A (en) | 2013-12-02 |
| BR112013000582A2 (en) | 2016-07-05 |
| JP2013531148A (en) | 2013-08-01 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| ASS | Succession or assignment of patent right |
Owner name: PFANNER PROTECTIVE CLOTHING CO., LTD. Free format text: FORMER OWNER: PFANNER ANTON Effective date: 20130529 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20130529 Address after: Austria Hohenems Applicant after: PFANNER SCHUTZBEKLEIDUNG GMBH Address before: Austria, Hohenems Applicant before: PFANNER ANTON |
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| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |