• 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:
    INSULATING DECOUPLER An insulating decoupler is shown, comprising a pulley (30) having a pulley inner surface (300), a hub (20) having a radially extending arm (21), the radially extending arm having a friction surface ( 211) slidably fitted to the pulley inner surface, a spring (41) secured to the pulley, the spring being intermittently engageable with the radially extending arm, an elastomeric element (61) being disposed between the spring and the radially extending arm; and the radially extending arm being intermittently engageable with a pulley lock (301).
    公开号:BR112013012483B1
    申请号:R112013012483-0
    申请日:2011-12-07
    公开日:2021-08-31
    发明作者:Yahya Hodjat
    申请人:Gates Corporation；
    IPC主号:
    专利说明:

    FIELD OF THE INVENTION
    [001] The present invention relates to an insulating decoupler that has an arm provided with a friction surface slidingly fitted to an internal pulley surface, a spring provided with an intermittent engagement with the arm; and the radially extending arm being intermittently engageable with a pulley lock. FUNDAMENTALS OF THE INVENTION
    [002] Diesel engines used in passenger car applications are increasingly manufactured due to the benefit of better fuel economy. In addition, gasoline engines are increasing compression ratios in order to improve fuel efficiency. As a result, the auxiliary drive systems of diesel and gasoline engines have to overcome the higher magnitude vibrations from the crankshafts in view of the aforementioned changes to the engines.
    [003] Due to the increased vibration of the crankshafts combined with higher rates of acceleration / deceleration and the high inertia of the alternators, the engine's auxiliary transmission system often presents a belt background noise due to belt slip. This will also reduce belt life.
    [004] Crankshaft insulators/decouplers and alternator decouplers/isolators have been widely used in engines with high angular vibration in the sense of filtering out vibrations in the engine's operating speed range. However, although a crankshaft insulator can work very well in the motor's operating speed range, it will still have problems during motor startup or shutdown due to the natural frequency of the insulator itself.
    [005] An alternator decoupler / insulator can eliminate belt slip on an alternator pulley, but it cannot resolve the belt slip that occurs on the crankshaft pulley. For some engines, a crankshaft isolator / decoupler and an alternator decoupler / insulator must be used together. Unfortunately, this can add significant cost to the auxiliary transmission system.
    [006] United States Patent No. 6044943 is representative of the technique, and presents a crankshaft decoupler provided with a mounting hub, a pulley rotatably mounted on the mounting hub, an annular loader mounted inside said pulley , a biasing device mounted therebetween, and a one-way clutch mounted between the annular loader and the pulley. The biasing device dampens the belt drive against the crankshaft impulses and decreases the resonant angular frequency of the belt system. The one-way clutch prevents the sudden reversal of belt tension in the transmission due to engine start/stop or sudden engine deceleration and prevents belt squealing in a momentary reversal slip as a result of the tensioners failing to exit the mode. inverse. The one-way clutch limits the maximum torque power that can be transmitted to prevent belt slippage during a momentary overload.
    [007] What is needed is an insulating decoupler having an arm provided with a friction surface slidingly fitted to an inner pulley surface, a spring provided with an intermittent engagement with the arm, and the arm extending into the radial direction intermittently attachable to a pulley lock. The present invention fulfills this need. SUMMARY OF THE INVENTION
    [008] The main aspect of the present invention is an insulating decoupler having an arm provided with a friction surface slidingly fitted to an inner pulley surface, a spring provided with an intermittent engagement with the arm, and the extending arm radially intermittently engageable in a pulley lock.
    [009] Other aspects of the present invention will be highlighted or made obvious by the description of the present invention below and the accompanying drawings.
    [010] The present invention comprises an insulating decoupler comprising a pulley having a pulley inner surface, a hub having a radially extending arm, the radially extending arm having a friction surface slidingly fitted to the inner surface of pulley, a spring attached to the pulley, the spring being intermittently engageable with the radially extending arm, an elastomeric element disposed between the spring and the radially extending arm, and the radially extending arm being intermittently engageable with a pulley lock . BRIEF DESCRIPTION OF THE DRAWINGS
    [011] The attached drawings, which are incorporated in and form part of this descriptive report, illustrate preferred embodiments of the present invention and, together with the description, serve to explain the principles of the present invention.
    [012] Figure 1 is a front perspective view of the insulating decoupler.
    [013] Figure 2 is an exploded front view of the insulating decoupler.
    [014] Figure 3 is a rear exploded view of the insulating decoupler.
    [015] Figure 3a is a cross-sectional view of the damping elements.
    [016] Figure 4 is a front view of the insulating decoupler. DETAILED DESCRIPTION OF THE PREFERRED MODALITY
    [017] Figure 1 is a front perspective view of the insulating decoupler. The device comprises a shaft 10. Shaft 10 is used in the sense of connecting the device to a motor crankshaft (not shown). Torque is transmitted from the crankshaft through shaft 10 to a hub 20. Shaft 10 can be press-fitted to hub 20 so that shaft 10 and hub 20 can rotate together.
    [018] Hub 20 comprises radially extending arms 21, 22, 23. Radial extension is given with respect to axis of rotation AA of shaft 10, see Figure 2. Although the preferred number of arms 21, 22, 23 be it three, any number of radially extending arms can be used with equal success in the device of the present invention. The range of movement of the device is given as a function of the number of arms. Three radially extending arms allow a range of relative motion of about 120° between hub 20 and pulley 30. For four radially extending arms, the range of relative motion is approximately 90°C, and so on. .
    [019] The end of each arm comprises a friction plate element 210, 220, 230. A friction element 211, 212, 213 is fixed on the end of each respective friction plate element 210, 220, 230. friction element frictionally contacts an inner surface 300 of the pulley 30. The inner surface 300 is a cylindrical section. Each friction plate element 210, 220, 230 comprises an arcuate shape so as to fit the inner surface 300.
    [020] The friction plate elements allow a relative movement between the pulley and the shaft during an uncoupling and re-coupling. The pulley 30 comprises a belt engaging surface 31 for contacting a belt. The belt engaging surface 31 may comprise a profile with multiple ribs, as shown, or may also comprise any other profile known in the art, such as, for example, serrated, flat, or a single v-notch.
    [021] A spring element 41, 42, 43 extends from a mounting element 301, 302, 303, respectively. Each spring element 41, 42, 43 fits a radially extending arm 21, 22, 23 respectively. Each spring element 41, 42, 43 is loaded in a substantially cantilevered manner. Each mounting element 301, 302, 303 also acts as a lock in the sense of preventing rotation of each radially extending arm during its operation.
    [022] Each arm that extends in the radial direction engages with its respective spring during operation, thus allowing the transfer of torque from the crankshaft to the motor pulley while the motor is running. operation. Spring elements 41, 42, 43 dampen and smooth out engine vibrations as well as insulate them from the pulley, and therefore from the rest of the belt drive system.
    [023] For example, in a shaft 10 running in the D1 direction of the friction plate element 210 will contact the mounting element 301. In a driving direction of the axis D2, the friction plate element 210 will contact the the mounting element 302. The driving direction D1 is typically associated with motor deceleration. D2 driving direction is typically associated with engine acceleration.
    [024] Each spring element comprises an arm 41a, 42a, 43a, which bends in a cantilever bending mode. Each spring element further comprises an end 41b, 42b, 43b, which has an accordion-like shape, or multiple folds, which are used in a compression mode.
    [025] Each spring element shape can be varied in bending area 41a, 42a, 43a due to the fact that it comprises several bends, as well as in the accordion area due to having different numbers of compression bends. The flexibility of the spring element allows isolation from engine vibration, which vibration can be designed and tuned to the needs of any given engine. In addition to the many shapes the spring element can have in its curvature and compression areas, the thickness of the spring element can also be varied to adjust to the spring rate as needed. The simplest way to change the thickness of the spring element is to double or triple its thickness in the desired areas.
    [026] Figure 2 is an exploded front view of the insulating decoupler. The friction ring 50 damps a relative movement of the pulley 30 with respect to the hub 20. The friction ring 50 comprises materials known in the art.
    [027] Each of the radially extending arms 21, 22, 23 is fixed to a plate 400, which plate also serves to close the interior of the device, thereby protecting it from debris.
    [028] Figure 3 is an exploded rear view of the insulating decoupler. The friction ring 51 damps a relative movement of the pulley 30 with respect to the hub 20. The friction ring 51 comprises materials known in the art.
    [029] Figure 3a is a cross-sectional view of the damping elements. The damping elements 61, 62, 63 cushion the impact between each spring element 41, 42, 43 and the respective radially extending arm 21, 22, 23. The lower level 601, which is fixed to each of the arms extending radially, is an energy absorbing material known in the art that is used to prevent a sound and shock of a "knock", and the second (top) layer 600, which contacts the end of the spring element, is a wear resistant elastomer or polymer, also known in the art.
    [030] In an alternative embodiment, the points of contact points of each radially extending arm and the spring under the damping elements 61, 62, 63 are magnetized using a permanent magnet. This feature will keep the system engaged at all times. The magnetization intensity can be adjusted to allow decoupling with the desired force for decoupling the system. The decoupling force must be greater than the magnetic force and separate the radially extending arm from its respective contact point. For example, this feature reduces unnecessary decoupling and coupling when the motor is turned off, or when it encounters small decoupling forces.
    [031] Figure 4 is a front view of the insulating decoupler. The metal-to-metal contact areas, which are four points times the number of arms, are completely covered by at least two layers of elastomers or polymers. This results in a smooth decoupling action.
    [032] After the motor decelerates, the arms and springs simply separate from each other and the arms move back along their friction plate contacts over the pulley inner diameter. This creates a very simple and effective decoupling. Since most motors require about 15 degrees of decoupling, the device of the present invention offers many more degrees of decoupling than necessary.
    [033] Although a form of the present invention has been described in this document, it will be obvious to those skilled in the art that variations can be made in the construction and relationship between the parts, without departing from the spirit and scope of the present invention here described.
    权利要求:
    Claims (12)
    [0001]
    1. Insulating decoupler comprising: - a pulley (30) having an inner pulley surface (300); - a hub (20) having a first radially extending arm (21); - a first spring (41) fixed to the pulley (30); - the first spring (41) being intermittently engageable with the first radially extending arm (21); - the first radially extending arm (21) being intermittently engageable with a first pulley lock (301); and CHARACTERIZED by the fact that - a first damping element (61) disposed between the first spring (41) and the first radially extending arm (21), the first radially extending arm (21) having a friction surface ( 211) slidingly fitted to inner surface of pulley (300).
    [0002]
    2. Insulating decoupler according to claim 1, CHARACTERIZED in that it further comprises a second radially extending arm (22) and a third radially extending arm (23), each of the second and third extending arms extend radially (22, 23) comprising a friction surface (221, 231) slidingly engaged with the inner surface of pulley (300).
    [0003]
    3. Insulating decoupler according to claim 1, CHARACTERIZED by the fact that the first spring (41) comprises a curved cantilever portion (41a) and a bent portion (41b).
    [0004]
    4. Insulating decoupler according to claim 1, CHARACTERIZED by the fact that it further comprises a friction ring (50) disposed between the pulley (30) and the hub (20).
    [0005]
    5. Insulating decoupler according to claim 2, CHARACTERIZED in that it further comprises a second spring (42) intermittently engageable in the second radially extending arm (22), and a third spring (43) intermittently engageable in the third arm which extends radially (23).
    [0006]
    6. Insulating decoupler according to claim 5, CHARACTERIZED in that it further comprises a second damping element (62) disposed between the second radially extending arm (22) and the second spring (42) and a third damping element ( 63) disposed between the third radially extending arm (23) and the third spring (43).
    [0007]
    7. Insulating decoupler according to claim 5, CHARACTERIZED in that it further comprises an additional first damping element (61) disposed between the first radially extending arm (21) and the pulley (30), a second damping element ( 62) further disposed between the second radially extending arm (22) and the pulley (30), and an additional third damper element (63) disposed between the third radially extending arm (23) and the pulley (30).
    [0008]
    8. Insulating decoupler, according to claim 1, CHARACTERIZED by the fact that the inner surface of the pulley (300) comprises a cylindrical section.
    [0009]
    9. Insulating decoupler, according to claim 8, CHARACTERIZED by the fact that the friction surface (211) is arcuate.
    [0010]
    10. Insulating decoupler, according to claim 1, CHARACTERIZED by the fact that it further comprises: - second and third arms extending radially (22, 23) from the hub (20), each of said second and third arms radially extending (22, 23) having an arcuate friction surface (221, 231) slidingly engaged with the pulley inner surface (300); - second and third springs (42, 43) attached to the pulley (30), said second spring (42) being intermittently engageable with said second radially extending arm (22), the third second spring (43) being intermittently engageable with the said third radially extending arm (23); - second and third damping elements (62, 63), said second damping element (62) being disposed between said second spring (42) and said second radially extending arm (22), said third damping element (63) being disposed between said third spring (43) and said radially extending third arm (23); - wherein the second radially extending arm (22) is intermittently engageable with a second pulley latch (302) and the third radially extending arm (23) is intermittently engageable with a third pulley latch (303); - wherein the pulley inner surface (300) describes a cylindrical section, and wherein the friction surface (211) of the first radially extending arm (21) is arcuate.
    [0011]
    11. Insulating decoupler, according to claim 10, CHARACTERIZED by the fact that it further comprises a friction ring (50) disposed between the hub (20) and the pulley (30).
    [0012]
    12. Insulating decoupler, according to claim 10, CHARACTERIZED by the fact that it further comprises an axis (10) fixed to the hub (20).
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    法律状态:
    2020-08-18| B06F| Objections, documents and/or translations needed after an examination request according [chapter 6.6 patent gazette]|
    2020-08-25| B06U| Preliminary requirement: requests with searches performed by other patent offices: procedure suspended [chapter 6.21 patent gazette]|
    2021-05-11| B09A| Decision: intention to grant [chapter 9.1 patent gazette]|
    2021-07-20| B25D| Requested change of name of applicant approved|Owner name: GATES CORPORATION (US) |
    2021-07-27| B25G| Requested change of headquarter approved|Owner name: GATES CORPORATION (US) |
    2021-08-31| B16A| Patent or certificate of addition of invention granted [chapter 16.1 patent gazette]|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 07/12/2011, OBSERVADAS AS CONDICOES LEGAIS. |
    优先权:
    申请号 | 申请日 | 专利标题
    US12/928,537|US9328816B2|2010-12-14|2010-12-14|Isolator decoupler|
    US12/928,537|2010-12-14|
    PCT/US2011/063643|WO2012082479A1|2010-12-14|2011-12-07|Isolator decoupler|
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