• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    TIGHTENING UNIT FOR A PROTECTIVE HELMET SUPPORT BAND, PARTICULARLY FOR FOREST ENGINEERS. The invention relates to a clamping unit (48) which is described for a support strip (47) which is coupled to the lower edge of internal connectors (40) of a protective helmet (30) to fix it on the head of a user. The support band (47) comprises a head band (44) that continues on a neck band (46) that has two free ends connected to each other by a basic body (50) of the clamping unit (48). The clamping unit (48) has a neck casing (70) and a basic body (50) which are articulated together by a transmission lever (80). The basic body (50) can be articulated in relation to the neck housing (70) by a clamping lever (51) connected to it which is supported on the transmission lever (80) by a cam (52).
    公开号:BR112013000585B1
    申请号:R112013000585-8
    申请日:2011-07-12
    公开日:2020-09-29
    发明作者:Anton Pfanner；Martin Greber
    申请人:Pfanner Schutzbekleidung Gmbh；
    IPC主号:
    专利说明:

    TECHNICAL FIELD OF THE INVENTION
    [001] The invention relates to a clamping unit for a support band coupled to a lower edge of internal connectors of a protective helmet to fix the helmet on a user's head comprising a head band continuing on a band of neck with two free ends connected to each other by a basic body, the clamping unit comprises an operating element for tightening the support strip. BACKGROUND OF THE INVENTION
    [002] Such a clamping unit for such a protective helmet having such internal connectors is known from WO 2005/027671 A1. In this known protective helmet, the basic body is a part with a curved hollow profile having a rectangular cross section at the ends of which the free ends of the neck band are inserted. The operating element of the clamping unit is a rotary knob. The type of coupling between the rotary knob and the neck strap cannot be derived from this document. It is only indicated that the clamping unit serves to adjust an internal diameter of the support band, the internal surface of the basic body is in close contact with the back of the helmet wearer's head. When tightening the neck strap using the operation button, the basic body is relatively sharply pushed against the back of the helmet wearer's head. This could be uncomfortable. Adjustment of the support band to the size of the helmet user's head is performed on the back of the head when the user is wearing the helmet and is therefore inconvenient. When used in forests or heavy industry where the user wears gloves, adjustment of the helmet is only possible after removing the gloves. To remove the helmet, the operating element must be released, which may also be impossible with gloves. Helmet users then tend to adjust the support band so that the helmet can be put on and taken off without changing the size once adjusted. It is clear that such a helmet would not be tight enough then.
    [003] From DE 201 14 637 U1, a strap system including an automatic size adjustment for helmets, particularly for sports and bicycle helmets, is known. The strap system has to be adjusted to the respective head and neck sizes of helmet users. To facilitate the adjustment of the strap system, it is formed so that it is flexible to a degree that the user can put the helmet on including the strap system on the head. The strap system automatically adjusts to the contour of the head and neck and is then locked on the helmet by means of a fastener. Here, a clamping lever serves to secure a strip in a desired position. The clamping lever fixes the strap only in the position that the helmet user has previously adjusted by pulling the helmet strap system.
    [004] Document DE 44 44 188 A1 shows a bicycle helmet in which the chin and neck straps are fastened by a quick fixing device. The quick fixing device comprises a lever coupled to the outside of the helmet shell to which a clamping strip is attached. The clamping strip is tightened by moving the lever.
    [005] From WO 98/56270, finally, a bicycle helmet which is known has a tensioning device comprising a clamping lever articulated into an external helmet shell. The tension applied by the clamping lever tightens the strings to establish contact with a neck support at the back of the head.
    [006] The helmets according to the last three documents mentioned are sport helmets, particularly bicycle helmets, whose strap system is not comparable to the internal connectors of a protective helmet, such as that used in the forest and in industries. SUMMARY OF THE INVENTION
    [007] It is an object of the invention to provide a clamping unit of the type mentioned at the beginning that is formed so that it does not impair comfort when wearing the protective helmet provided with it and that can be operated on the back of the user's head even with a glove in his hands.
    [008] According to the invention, this objective is solved by a clamping unit of the type mentioned at the beginning, where the clamping unit comprises a neck casing to which the basic body is articulated, and where the operating element is a clamping lever connected to the basic body by means of which it is articulated in relation to the neck casing. In the clamping unit according to the invention, only the basic body is pivoted away from the neck shell when the support band is tightened. The neck wrap itself can invariably remain in its most comfortable position in which it comes in contact with the back of the head.
    [009] The advantageous embodiments of the clamping unit according to the invention are the subject of the subclaims.
    [010] In an embodiment of the clamping unit according to the invention, the basic body and the neck housing are connected by a transmission lever connected to the neck housing at a first end and the basic body at a second end. The neck shell is freely pivotable in relation to the basic body and can then be adjusted to any shape of head so that the clamping unit does not impair the comfort of wearing the protective helmet.
    [011] In an additional embodiment of the clamping unit according to the invention, the transmission lever is connected to the basic body in a position located on the basic body above the connection point of the clamping lever. The basic body and the neck shell are then articulated to the greatest degree possible.
    [012] In an additional embodiment of the clamping unit according to the invention, the clamping lever is provided with a cam supported on the transmission lever in the area of its connection point on the basic body. When the tightening lever is operated, then, the neck wrap remains unaffected by the tightening process so that it does not impair the comfort of wearing the helmet.
    [013] In an additional embodiment of the clamping unit according to the invention, the transmission lever is, at its second end, provided with a pre-tensioning spring that pushes the first end of the transmission lever against one end of the body base opposite the clamping lever connection point. In this way, the basic body is retained in a position on the transmission lever where the maximum tightening path for the neck strap is available.
    [014] In an additional embodiment of the clamping unit according to the invention, a spring element strives to pivot the neck housing in the direction away from the second end of the transmission lever is arranged adjacent to the first end of the transmission lever . In this way, it is also ensured that the basic body leaves the position of the neck shell unaffected during the tightening process, that is, during the operation of the tightening lever.
    [015] In an additional embodiment of the clamping unit according to the invention, the spring element is a resilient finger formed integrally with the neck shell. In this case, the clamping unit can be produced in an integrated and inexpensive manner together with the resilient finger in a molding process.
    [016] In an additional embodiment of the clamping unit according to the invention, the neck cover comprises, at the point of connection of the transmission lever, a fork having resilient arms that engage complementary holes in the first end of the transmission lever with integrated formed tappets.
    [017] The neck wrap can be manufactured as a separate part that can simply be connected to the transmission lever clipped to it.
    [018] In an additional embodiment of the clamping unit according to the invention, the basic body comprises two surfaces with profusions that can be placed in a positive coupling with complementary holes in the free ends of the neck band on both sides of the lever. tightening. This makes it possible to adjust the support band to the size of the head when the helmet is not in place. When the helmet is in place, the helmet can then finally be fixed on the head with the aid of the support band operating the clamping lever.
    [019] In an additional embodiment of the clamping unit according to the invention, the basic body is respectively provided with a hole to accommodate the free ends of the neck band on both sides between the profusions and the clamping lever. This makes it possible for the free ends of the neck band to protrude beyond the position in which the profusions of the basic body are engaged with the complementary holes in the neck band that are accommodated in the basic body and therefore cannot be a hindrance to the helmet user while operating and releasing the clamping unit. BRIEF DESCRIPTION OF THE DRAWINGS
    [020] The modalities of the invention will be described below with respect to the drawings in which:
    [021] FIG. 1 shows a subset of the internal connector of a protective helmet (not shown) provided with a clamping unit according to the invention in which the two ends of a neck band are releasably connected by the clamping unit in the neck area .
    [022] FIG. 2 shows a side view of a protective helmet in which the subset of internal connectors according to FIG. 1 is mounted on the helmet shell together with the clamping unit according to the invention.
    [023] FIG. 3 shows a cross-sectional view of the protective helmet according to FIG. 2 as seen in the backward direction.
    [024] FIG. 4 shows a partially interrupted representation of the protective helmet according to FIG. 2, as seen in the forward direction.
    [025] FIG. 5A shows, as a detail, a rear view of the clamping unit according to the invention, a clamping lever shown in an unoperated position.
    [026] FIG. 5B shows a cross-sectional view of the clamping unit along line VB-VB in FIG. 5A.
    [027] FIG. 6A shows the clamping unit according to FIG. 5A, the clamping lever, however, being shown in the operated position.
    [028] FIG. 6B shows a cross-sectional view of the clamping unit along the VIB-VIB line in FIG. 6A.
    [029] FIG. 7 shows a plan view of the clamping unit according to FIGS. 6A and 6B.
    [030] FIG. 8 shows a side view of the clamping unit according to FIG. 7. DETAILED DESCRIPTION
    [031] According to the illustration in FIGs. 1 to 4, a subset of internal connectors designated 40 as a whole comprises a support cage 42 and a support strip 47 comprised of a headband 44, a support band 47 and a neck band 46. The support 47 is provided with a clamping unit designated as 48 as a whole in the neck band area 46.
    [032] According to the illustration in FIGs. 2 and 3, the helmet shell 36 of a protective helmet 30 is, at the bottom edge on the rear side in the center, provided with a recess 76 behind which the clamping unit 48 of the support strip 47 is located, which in this way , is accessible for manual operation, even with a glove, to tighten or release the support strip 47.
    [033] The subset of internal connectors 40 is usually the part of a protective helmet that comes into contact with the head. The subset of internal connectors 40 can be attached to helmet shell 36 to support and secure helmet 30 to a user's head. The support cage 42 is, in the present case, produced as an integrated plastic molding. The headband 44 is integrally formed in the support cage 42. The neckband 46 has two front ends releasably connected to the free rear ends of the headband 44, for example, by a plug connection not shown in details in the figures. The neck strap 46 has two free ends connected to each other by the clamping unit 48 in the neck area. The neck band 46 can be formed from the same material as the support cage 42. The neck band 46 is connected respectively to the support cage 42 between its connections to the head band 44 and its free ends so as to be adjustable in height as as can be seen, for example, in FIG. 1. For this purpose, the neck strap 46 has three holes 51 arranged one above the other on each side that are lockable on a resilient screw that protrudes from the support cage 42. In this way, the clamping unit 48 can be adjusted to different head shapes and placed in the most comfortable position with the neck wrap 70 at the back of the head.
    [034] Next, the clamping unit 48 will be described in more detail. The grip unit 48 is, as an ear protection (not shown), part of the helmet accessories shown in FIG. 2 which always remains within the perimeter of the helmet shell 36 so that, even in the area of the clamping unit 48, non-projecting parts are present in the helmet 30 in which obstacles must be pressed when the helmet is worn. FIG. 2 shows a side view of the inner connector subset 40 of the protective helmet 30 in which the two ends of the neck strap 46 are releasably connected by the clamping unit 48 in the neck area. The clamping unit 48 is shown in the clamped state. FIG. 3 shows a cross-sectional view of the protective helmet 30 as seen in the rearward direction. FIG. 4 shows a partially interrupted illustration of the protective helmet 30 according to FIG. 3 as seen in the forward direction.
    [035] The model and operating principle of the clamping unit 48 will be described in detail with reference to FIGs. 5 to 8. FIG. 5A shows the clamping unit 48 in a view from the rear face. FIG. 5B shows a cross-sectional view of the clamping unit 48 along line VB-VB in FIG. 5A. The clamping unit 48 comprises a neck housing 70 to which a basic body 50 is hinged via an interposed transmission lever 80. The clamping unit 48 comprises an operating element formed as a clamping lever 51 in the embodiment described here. By pivoting the clamping lever 51 clockwise, the basic body 50 is pivoted with respect to the neck housing 70 from a position shown in FIG. 5B to a position shown in FIG. 6B.
    [036] A shaft of the transmission lever 80 connecting the basic body 50 to the neck housing 70 is respectively connected to the neck housing 70 at a first end 82 and to the basic body 50 at a second end 84. The transmission lever 80 is , with an axis, connected to the basic body 50 in a position 62 located in the basic body 50 above a connection point or axis 66 of the clamping lever 51. The clamping lever 51 is, in the area of its connection point 66 in the basic body 50, supplied with a cam 52 supported on the transmission lever 80. If the clamping lever 51 is moved clockwise from the position shown in FIG. 5B in which the clamping unit 48 is not clamped to the clamped position shown in FIG. 6B, the meat 52 exerts pressure on the second end 84 of the transmission lever 80, where the lower end of the basic body 50 is, counterclockwise, hinged away from the first end 82 of the transmission lever 80 as can be seen in FIG. 6B. The connection points 62 and 64 of the transmission lever that have a distance s1 in the untightened position of the clamping unit 48 in FIG. 5B have a substantially greater distance s2 in the tight position in FIG. 6B. The transmission lever 80 is, at its second end 84, provided with a pre-tensioning spring 86 pushing the first end 82 of the transmission lever 80 against the lower end of the basic body 50 opposite the connection point 66 of the clamping lever 51, that is, to the position shown in FIG. 5B. From that position, the lower end of the basic body 50 is pivoted away from the first end 82 of the transmission lever 80 to the position shown in FIG. 6B if the clamping lever 51 is operated and pivoted from the position shown in FIG. 5B to the position shown in FIG. 6B. The distance s2 shown in FIG. 6B is a consequence only of the effect of the pre-tensioning spring 86. The basic body 50 can be pivoted back to the position shown in FIG. 5B without any operation of the clamping lever 51 if tension is exerted on the basic body 50 by the neck strap 46. If this tension stress condition according to FIG. 5B already exists, the basic body 50 is pivoted away from the first end 82 of the transmission lever 80 with its lower end operating the clamping lever 51 without the distance s1 according to FIG. 5 be changed in the process. If no tension is exerted on the basic body 50 by the neck strap 46, the basic body 50 is articulated by a spring element 88 disposed adjacent the first end 82 of the transmission lever 80 which strives to articulate the neck housing 70 in the direction away from the first end 82 of the transmission lever 80. In the illustrated embodiment, the spring element 88 is formed as a resilient finger coupled to the neck shell 70. Instead, the resilient finger is preferably simply integrally formed in the neck shell 70 .
    [037] According to the illustration in FIG. 7, the neck wrap 70 comprises, at its lower end, a fork 72 having resilient arms 72a, 72b that engage complementary holes (not visible) at the first end 82 of the transmission lever 80 with integrally formed (not visible) tappets and thus forming the connection point 62 of the transmission lever 80 in the neck housing 70.
    [038] According to the illustration in FIGs. 6A and 8, the basic body 50 comprises two surfaces 54, 56 on both sides of the clamping lever 51 which are provided with angular profusions 54a or 56a which are in positive engagement with complementary holes 47a, 47b at the free ends of the neck band 46. The basic body 50 is provided with a hole 57a, 57b respectively to accommodate the free ends of the neck band 46 on both sides between the profusions 54a, 56a and the clamping lever 51, as seen in FIG. 6A.
    [039] The particular advantage of the clamping unit 48 according to the invention is that the basic body 50 is pivoted around the second upper end 84 of the transmission lever 80 which is pivotally supported in the neck housing 70 with its first lower end 82 when squeezing and releasing it by operating the clamping lever 51 so that the most comfortable position that the neck wrap 70 occupies at the back of the head after helmet 30 is not adversely changed. Before putting on helmet 30, the free ends of the neck band 46 are inserted into the holes 57a, 57b of the basic body 50, a positive engagement of the holes 47a, 47b in the neck band 46 and of the angular profusions 54a, 56a in the basic body it is established to adjust the effective length of the support band 47 (measured between the interior of the head band 44 and the front face of the neck wrap 70) depending on the size of the head when the helmet 30 is not placed on the head. The adjustment is carried out properly so that the protective helmet 30 can be conveniently placed when the clamping unit 48 is not operated. Tightening the support band 47 and thus the neck band 46 after the helmet 30 is placed is then carried out with the aid of the clamping unit 48 through the operation of the clamping lever 51 as described above. The clamping unit 48 is supported by the neck wrap 70 in the neck area at the back of the head in the process. The tight position of the clamping unit 48 is shown in FIG. 6. If clamping lever 51 is pivoted counterclockwise and thus opened, clamping unit 48 is opened. In this way, the lower end of the basic body 50 can move towards the connection point 62 of the transmission lever 80 in the neck housing 70, so that the neck band 46 and thus the support band 47 are loosened, and protective helmet 30 can be removed and put on. If protective helmet 30 is put on, it is only required to swing clamping lever 51 downwards to secure helmet 30 on the head. This can be conveniently done with one hand and even with a glove. The neck wrap 70 is covered by a piece of padding material 89 on the front face. NUMERICAL REFERENCE LIST 30 - protective helmet 36 - helmet enclosure 40 - subset of internal connectors 42 - support cage 44 - head band 46 - neck band 47 - support band 47a - hole 47b - hole 48 - drive unit clamping 50 - basic body 51 - clamping lever 52 - cam 54 - surface 54a - protrusion 56 - surface 56a - protrusion 57a - orifice 57b - orifice 62 - connection point 64 - connection point 66 - connection point 70 - housing neck 72 - fork 72a - resilient arm 72b - resilient arm 76 - recess 80 - transmission lever 82 - first end 84 - second end 86 - pre-tension spring 88 - spring element 89 - padding material 90 - distance 91 - distance
    权利要求:
    Claims (10)
    [0001]
    1. Clamping unit for a support strip (47) coupled to the bottom edge of internal connectors (40) of a protective helmet (30) to fix the helmet on a user's head comprising a head band (44) continuing in a neck band (46) with two free ends connected by a basic body (50) of the clamping unit (48) comprising an operating element for clamping the support band (47), the clamping unit (48) comprises a neck housing (70) to which the basic body (50) is articulated, characterized by the fact that the operating element is a clamping lever (51) connected to the basic body by means of which the basic body (50) is articulated in relation to the neck wrap (70).
    [0002]
    2. Clamping unit according to claim 1, characterized in that the basic body (50) and the neck shell (70) are connected by a transmission lever (80) connected to the neck shell (70) at a first end (82) and the basic body (50) at a second end (84).
    [0003]
    3. Clamping unit according to claim 2, characterized by the fact that the transmission lever (80) is connected to the basic body (50) in a position (64) located on the basic body (50) above the connection (66) of the clamping lever (51).
    [0004]
    4. Clamping unit according to claim 3, characterized in that the clamping lever (51) is provided with a cam (52) supported on the transmission lever (80) in the area of its connection point (64) ) in the basic body (50).
    [0005]
    5. Clamping unit according to claim 4, characterized by the fact that the transmission lever (80) is, at its second end (84), provided with a pre-tensioning spring (86) that drives the first end (82) of the transmission lever (80) against an end of the basic body opposite the connection point (64) of the clamping lever (51).
    [0006]
    Clamping unit according to any one of claims 2 to 5, characterized in that a spring element (88) which strives to articulate the neck shell (70) in the direction away from the first end (82 ) of the transmission lever (80) is disposed adjacent to the first end (82) of the transmission lever (80).
    [0007]
    7. Clamping unit according to claim 6, characterized in that the spring element (88) is a resilient finger formed integrally in the neck shell (70).
    [0008]
    Clamping unit according to any one of claims 2 to 7, characterized in that the neck shell (70) comprises, at the connection point (66) of the transmission lever (80), a fork (72) ) with resilient arms (72a, 72b) that engage complementary holes in the first end (82) of the transmission lever (80) with integrally formed tappets.
    [0009]
    9. Clamping unit according to any one of the preceding claims, characterized in that the basic body (50) comprises two surfaces (54, 56) with protrusions (54a, 56a) on both sides of the clamping lever ( 51), protrusions that can be placed in a positive coupling with complementary holes (47a, 47b) at the free ends of the neck band (46).
    [0010]
    10. Clamping unit according to claim 9, characterized in that the basic body (50) is provided with a hole (57a, 57b) respectively to accommodate the free ends of the neck band (46) in both between the protrusions (54a, 56a) and the clamping lever (51).
    类似技术:
    公开号 | 公开日 | 专利标题
    BR112013000585B1|2020-09-29|TIGHTENING UNIT FOR A PROTECTIVE HELMET SUPPORT BAND, PARTICULARLY FOR FOREST ENGINEERS
    BR112013000604B1|2020-09-29|INTERNAL CONNECTORS FOR A PROTECTION HELMET, PARTICULARLY FOR FOREST ENGINEERS
    US7162750B2|2007-01-16|Detachable and rotatable clip
    US8875318B2|2014-11-04|Head band
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    US20070266481A1|2007-11-22|Adjustable helmet
    EP1100347B1|2003-10-01|Accessory providing protection against falls in sports such as in-line skating
    TW201540209A|2015-11-01|Bicycle helmet fit system
    US20160235132A1|2016-08-18|Hard shell fastening device
    WO2006073611A3|2007-05-18|Belay
    JP2007277785A|2007-10-25|Neck warmer with hair band
    US5911315A|1999-06-15|Bicycle helmet and strap adapter
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    US20130036533A1|2013-02-14|Mouth guard retaining device
    BR112013000588B1|2021-09-21|PROTECTION HELMET, IN PARTICULAR FOR FOREST ENGINEERS
    JP2006097215A|2006-04-13|Instrument for preventing headgear from coming off and flying away with ear string-adjusting mechanism
    GB2501508A|2013-10-30|Swimming Goggles with Strap Adjustment
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    同族专利:
    公开号 | 公开日
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    MX2013000461A|2013-12-02|
    EA201300112A1|2013-06-28|
    AU2011278395B2|2016-06-30|
    MY162072A|2017-05-31|
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    PL2498635T3|2014-05-30|
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    CN103096746B|2015-11-25|
    PE20131307A1|2013-11-29|
    DE102010026998A1|2012-01-19|
    ZA201300328B|2014-03-26|
    KR20130041938A|2013-04-25|
    UA107973C2|2015-03-10|
    NZ606387A|2015-02-27|
    EA021419B1|2015-06-30|
    CA2804667A1|2012-01-19|
    US20130205478A1|2013-08-15|
    PE20150305A1|2015-03-04|
    EP2498635B1|2013-11-20|
    JP2013534573A|2013-09-05|
    HRP20140120T1|2014-03-14|
    HK1184654A1|2014-01-30|
    EP2498635A1|2012-09-19|
    WO2012007474A1|2012-01-19|
    EP2498635B8|2015-11-04|
    US9480293B2|2016-11-01|
    JP5797754B2|2015-10-21|
    ES2445816T3|2014-03-05|
    KR101906610B1|2018-12-07|
    CN103096746A|2013-05-08|
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    法律状态:
    2016-09-20| B25C| Requirement related to requested transfer of rights|Owner name: ANTON PFANNER (AT) Free format text: A FIM DE ATENDER A TRANSFERENCIA, REQUERIDA ATRAVES DA PETICAO NO 20130075263 DE 10/09/2013, E NECESSARIO APRESENTAR PROCURACAO EM NOME DA CESSIONARIA. |
    2017-05-02| B25A| Requested transfer of rights approved|Owner name: PFANNER SCHUTZBEKLEIDUNG GMBH (AT) |
    2018-12-26| B06F| Objections, documents and/or translations needed after an examination request according art. 34 industrial property law|
    2019-08-13| B06U| Preliminary requirement: requests with searches performed by other patent offices: suspension of the patent application procedure|
    2020-07-14| B09A| Decision: intention to grant|
    2020-09-29| B16A| Patent or certificate of addition of invention granted|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 12/07/2011, OBSERVADAS AS CONDICOES LEGAIS. |
    优先权:
    申请号 | 申请日 | 专利标题
    DE102010026998.0|2010-07-13|
    DE102010026998A|DE102010026998A1|2010-07-13|2010-07-13|Clamping unit for a carrying strap of a protective helmet, in particular for forestry workers|
    PCT/EP2011/061881|WO2012007474A1|2010-07-13|2011-07-12|Tensioning unit for a supporting band of a protective helmet, in particular for forestry workers|
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