[go: up one dir, main page]

WO2009091377A1 - Ensemble à rochet haute vitesse - Google Patents

Ensemble à rochet haute vitesse Download PDF

Info

Publication number
WO2009091377A1
WO2009091377A1 PCT/US2008/012037 US2008012037W WO2009091377A1 WO 2009091377 A1 WO2009091377 A1 WO 2009091377A1 US 2008012037 W US2008012037 W US 2008012037W WO 2009091377 A1 WO2009091377 A1 WO 2009091377A1
Authority
WO
WIPO (PCT)
Prior art keywords
drive
spool
ratchet
drive shaft
attachment
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/US2008/012037
Other languages
English (en)
Inventor
Thomas E. Brovold
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of WO2009091377A1 publication Critical patent/WO2009091377A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B13/00—Spanners; Wrenches
    • B25B13/46—Spanners; Wrenches of the ratchet type, for providing a free return stroke of the handle
    • B25B13/461—Spanners; Wrenches of the ratchet type, for providing a free return stroke of the handle with concentric driving and driven member
    • B25B13/462—Spanners; Wrenches of the ratchet type, for providing a free return stroke of the handle with concentric driving and driven member the ratchet parts engaging in a direction radial to the tool operating axis
    • B25B13/463—Spanners; Wrenches of the ratchet type, for providing a free return stroke of the handle with concentric driving and driven member the ratchet parts engaging in a direction radial to the tool operating axis a pawl engaging an externally toothed wheel
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B13/00—Spanners; Wrenches
    • B25B13/48—Spanners; Wrenches for special purposes
    • B25B13/481—Spanners; Wrenches for special purposes for operating in areas having limited access
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B17/00—Hand-driven gear-operated wrenches or screwdrivers

Definitions

  • the present invention relates generally to hand tools. More specifically, the present invention relates to a high speed ratchet assembly for use in the efficient attachment and removal of fasteners, such as nuts and bolts.
  • Hand tools are widely used in both industry and personal applications throughout the world.
  • One frequently used set of tools includes wrenches configured for the insertion and removal of nuts, bolts and other connectors in all types of mechanical devices.
  • these wrenches are utilized in manufacturing applications where systems are being assembled or disassembled.
  • screws, nuts, bolts and other fasteners are required in virtually every assembled product.
  • these connectors are not utilized in the products themselves, they are often required in the manufacturing process or manufacturing equipment utilized to manufacture these products. Consequently, wrenches to insert and remove these connectors are continuously required and often required in vast quantities.
  • wrenches are a vital tool for achieving the necessary repairs or maintenance.
  • This device provides a drive shaft which is connected to a handle by a ratcheting mechanism, thus allowing the drive shaft to be rotated in a first direction while also allowing the handle to freely rotate in the opposite direction to allow easy repositioning.
  • the user can drive the drive shaft an angular distance and then simply counter rotate the drive shaft to achieve new positioning. For example, if space within the mechanism being worked upon allows for a one eighth rotation of the wrench (45°), the user is easily able to rotate this distance, and then easily move the wrench back to the starting position. While this provides a tool for use in tight situations, it inherently requires repetitive movement. In situations where many turns are required to remove the applicable fastener, this repetitive movement could become very straining and time consuming.
  • the act of attaching nuts and bolts to devices, or to one another can typically be divided into two stages. These two stages include the “torque” stage and the “spinning” stage.
  • the torque stage is that portion of the removal where torque is required to either tighten the fastener or loosen the fastener. In the loosening of connectors, the torque stage may be referred to as "breaking away” or “breaking free” the connector.
  • breaking away or "breaking free” the connector.
  • the torque stage can be achieved relatively quickly while the spinning stage often takes time because considerable distances must be traveled.
  • the speed socket wrench outlined in U.S. Patent No. 4,620,459 provides the ability to rotate a T-Handle which extends from the wrench handle. This axis of rotation is perpendicular to the driveshaft axis, and allows the user to apply rotational force from a different direction.
  • the wrench can be positioned into a tight space where the typical rotation about the main drive shaft is limited, while actual rotation of the drive shaft can be obtained by turning the extending T-Handle.
  • the ratchet wrench described in U.S. Patent No. 6,457,386 provides another mechanism for translating rotational force.
  • This type of ratchet wrench uses a four pawl ratchet mechanism that engages annular rings on each end of the ratchet drive mechanism. Because of the configuration of these annular rings, the user can rotate the handle either clockwise or counterclockwise to drive the drive shaft in a first direction. Furthermore, by flipping the position of a lever, the user may change the engagement of all four pawls and in turn drive the shaft in a second direction opposite the first from either clockwise or counterclockwise rotation of the handle.
  • the wrench of the present invention addresses at least some of the above- referenced issues by providing a wrench with additional features not found in existing offerings.
  • the wrench of the present invention includes or is attachable to a standard socket wrench.
  • the wrench of the present invention may include a ratchet mechanism which allows it to operate much the same as existing socket wrenches. As is well understood, this allows rotation of a drive shaft in a first direction by corresponding rotation of a handle or housing. Rotation of the housing or handle in the reverse direction simply spins or "ratchets back" without substantial force being applied to the drive shaft.
  • the ratchet mechanism of the present invention may be capable of functioning in both a clockwise and counterclockwise direction. For example, reverse operation may be achieved by switching the wrench orientation and using a double ended drive shaft.
  • the present invention incorporates additional components which enable the wrench to be operated in a "high speed" mode in order to turn the drive shaft at a much faster rate with minimal effort.
  • the present invention incorporates a high speed operating mode wherein the driveshaft may be rotated at a substantially higher speed as compared to manual rotation by a user in order to address the spin-on/spin-off functions often necessary when using attachment bolts.
  • the wrench of the present invention may primarily be made up of a handle, a housing or main wrench structure, a ratchet mechanism, and a cooperating alternative drive mechanism.
  • the alternative drive mechanism provides the ability to spin fasteners on and off at higher speeds.
  • the main body portion of the wrench may take on many different forms, but it may consistently provide a housing structure.
  • the wrench may take on a typical handle structure as is well recognized by those familiar with socket wrenches.
  • the alternative drive mechanism may be configured as an attachment portion that may be operably coupled to a standard wrench.
  • the main wrench structure may be configured as a palm wrench, somewhat smaller in size and easy to operate within the palm of a user's hand.
  • a simplified handle may be configured to extend outwardly along the axis of alignment, somewhat similar to a screwdriver. As can be appreciated, any one of these alternatives could vary in size and configuration depending on very specific applications that could be involved.
  • Ratchet assemblies Configured within the main structure of the wrench of the present invention may be a ratchet assembly.
  • Ratchet assemblies and their functional characteristics are well known by those skilled in the art. Naturally, they provide the ability for the user to drive a drive shaft in a first direction, while allowing easy rotation of the wrench in the opposite direction without imparting significant force upon the driveshaft.
  • the present invention may provide a cooperating cable/spool mechanism as an alternative drive source.
  • This mechanism may cooperate with other structures within the wrench housing to provide both typical ratchet operations, along with a secondary drive feature utilizing the cable and spool.
  • the alternative drive source may be designed such that it does not interfere with normal operation of the wrench, and may be utilized only when desired by the user.
  • the spool itself may have its axis of rotation primarily aligned with the driveshaft.
  • the cable may be wound around the spool such that pulling on the cable imparts rotational force.
  • a coupling mechanism may be provided to transfer driving force to the driveshaft when the cable is pulled from the spool.
  • the coupling mechanism may allow for standard operation of the ratchet mechanism.
  • the cable/spool mechanism may be configured to be spring loaded so as to cause automatic rewinding of the cable after the cable has been pulled by the user to loosen or tighten a fastener.
  • the spring utilized for rewinding could also be used as part of the pull mechanism.
  • the cable may be wrapped around the spool with one end of the cable configured to be accessible by the user. In one exemplary embodiment, this may involve having the cable extend from the side of the wrench structure. In another exemplary embodiment, the cable may be threaded along the length of the handle and have a pull- ring extending from an end thereof. Using this structure, when the cable is pulled the rotational force may be imparted upon the driveshaft, thus providing the desired operation.
  • a wrench with dual modes of operation may require a coupling mechanism and other components with unique features.
  • the corresponding rotation of the spool will cause force to be transferred to the main drive shaft.
  • Such coupling between the spool and drive component may be achieved in one exemplary embodiment via a spring loaded pin within the drive component and a cooperating groove structure in the spool.
  • the drive shaft may have dual connectors extending on both ends thereof.
  • a socket or similar component could easily be attached to both ends of the drive structure.
  • a relatively straight forward coupling mechanism could be used to transfer force from the spool to the drive structure.
  • This structure may only allow the spool to rotate in a single direction.
  • actual drive rotation would depend upon the portion of the drive being used.
  • a sliding drive shaft may be used, which allows for connection of tools on either side of the wrench. This dual sided operation is achieved by sliding the drive shaft to extend from the desired side of the wrench and attaching a desired tool.
  • the housing and drive shaft may be configured as an attachment to a "standard" socket wrench.
  • This embodiment may continue to have dual modes of operation.
  • the "ratchet drive” and alternative drive may be configured as separate components.
  • the drive shaft from the standard socket wrench may be connected to the drive of the attachment.
  • Socket work pieces may then be attached to another end of the attachment drive.
  • this embodiment may require more space during operation due to its size, but with the added benefit of allowing operation with a standard wrench.
  • the alternative drive may be achieved by a pull cable incorporated into the attachment, with a coupling structure for coupling the alternative drive to the attachment drive when actuated.
  • One advantage of the attachment embodiment is the ability to selectively connect the additional component when used in an application where it is beneficial.
  • the attachment may be easily removed to allow the use of a traditional ratchet wrench.
  • the cable drive may be incorporated into a box-end style ratcheting wrench.
  • This configuration provides wrenches of specific sizes with the ability to spin on/off connectors at high speeds. Some compromise in wrench size may be required to achieve this type of operation in this style of wrench. That said, additional features and benefits are provided.
  • this alternative mode of operation utilizes a cable and spool.
  • the user may simply pull on the cable, thus causing the spool to rotate.
  • this rotation may then impart force upon the driveshaft.
  • the ability to drive the driveshaft utilizing the cable and spool mechanism may provide the user with the ability to turn the driveshaft at a relatively high rate of speed.
  • the spinning on and spinning off operations of fasteners and like becomes more efficient.
  • FIG. 1 is a perspective view of one exemplary embodiment of a wrench in accordance with the present invention
  • FIG. 2 is an exploded view of the internal components of the wrench of Fig. 1 ;
  • FIG. 3 is a perspective view of a portion of the wrench housing
  • Fig. 4 is an assembled view of the wrench components within the wrench housing
  • FIG. 5 is a perspective view of the coupling structure between a spool and a drive shaft of the wrench
  • Fig. 6 is diagram illustrating one exemplary coil spring that may be coupled to the spool
  • FIG. 7 is a perspective view of the spool illustrating one exemplary first spring connecting means in accordance with the present invention
  • Fig. 8 is a diagram showing the spring of Fig. 6 coupled to the spool illustrated in Fig. 7;
  • Fig. 9 is a perspective view of the spring positioned within and engaging the wrench housing
  • FIGs. 10A and 10B are diagrams illustrating a second exemplary wrench in accordance with the present invention.
  • FIGs. 11A and 11 B are perspective views of a gear shaft structured to receive a drive shaft in accordance with the second exemplary wrench
  • Fig. 12A is a cross-sectional view of the drive shaft and gear shaft of the second exemplary wrench illustrating a first drive shaft position
  • Fig. 12B is a cross-sectional view of the drive shaft and gear shaft of the second exemplary wrench illustrating a second drive shaft position
  • FIG. 13 is a perspective view of a wrench attachment embodiment of the present invention, which includes a wrench attachment member structured to be coupled to an existing, standard ratchet type wrench; and
  • Fig. 14 is a perspective view of the wrench attachment member of Fig. 13 illustrating the internal components of the device.
  • the present invention involves a ratchet wrench which provides additional features allowing for high speed "spin-on” or “spin-off' of fasteners and the like. While the discussion below will primarily outline the use of this wrench to apply or remove nuts, bolts and screws, it should be understood that any spinning fastener or related device could be more efficiently installed or removed using the wrench of the present invention. As such, the discussion of fasteners below is not limited to nuts, bolts, or screws but includes any potential variations that may exist as will be appreciated by those skilled in the art.
  • wrench 10 generally includes a handle portion
  • Wrench 10 also includes a dual ended drive shaft 20 having a first attachment end 22 and a second attachment end 24.
  • first attachment end 22 and second attachment end 24 are coupled to one another such that they work in unison when the wrench itself is operating.
  • first attachment end 22 and second attachment end 24 are configured for easy attachment to further work tools, such as a socket attachment or other driving mechanisms known to those skilled in the art.
  • first attachment end 22 is sized substantially similar to second attachment end 24 such that one of the attachment ends may be used to apply a fastener while the other attachment end may be used to remove the fastener.
  • the user must simply flip between the two attachment ends during application and removal of fasteners.
  • wrench 10 further includes a pull device 40.
  • the pull device may include a pull ring.
  • Pull ring 40 is attachable to a cable 42 extending through an end of the handle portion such that, in an "un-actuated" state, pull ring 40 may be positioned substantially adjacent handle portion 12.
  • cable 42 may be structured to cooperate with additional components disposed within ratchet housing portion 14 to rotate dual ended drive shaft 20 and any work tools attached thereto.
  • any suitable type of cable 42 may be used.
  • the type of cable may be selected based upon numerous factors including, but not limited to, strength and size.
  • cable 42 may be formed from a stranded wire having an overall diameter between about .020 inches and about .030 inches.
  • Exemplary materials may include stainless steel or tempered steel. These types of cables may carry loads of up to about 200 pounds, which is typically sufficient for a hand pull.
  • cable 42 may be formed from a Kevlar® cord or a carbon graphite thread.
  • cable 42 may typically be coupled to an internal spool (not shown), such as by threading the cable through a hole in the spool and forming a knot in the cable to keep it from retracting.
  • cable 42 may be coupled to pull ring 40 in any suitable manner, such as by tying or crimping the cable to the ring.
  • a pull ring is merely one type of pull device that may be coupled to cable 42 to allow a user to grasp and actuate cable 42, and thus, is presented merely for purposes of example and not for limitation.
  • pull devices having any suitable size and shape may be used such as, for example, spheres, oblong rings, hook members, and the like.
  • First attachment end 22 or second attachment end 24 may be easily connected to various socket tools for use in the attachment or detachment of fasteners.
  • the present invention may provide a high speed operating mode which may be enacted by pulling on pull ring 40.
  • cable 42 may be connected to cooperating structures within wrench ratchet housing portion 14 of wrench 10 to provide high speed spinning of dual ended drive shaft 20, thus providing the ability to easily “spin-on” or “spin-off' fasteners, as necessary. Such operation will be discussed in further detail to follow.
  • the alternative drive features of the present invention do not interfere with a user operating wrench 10 in a "standard" ratcheting mode of operation. Instead, the alternative drive features of the present invention may be utilized when desired by the user in order to operate wrench 10 in a high speed mode of applying or removing a fastener or the like.
  • drive shaft 20 is described as a dual ended drive shaft having a first attachment end 22 and a second attachment end 24 merely for purposes of example and not limitation.
  • first and second attachment ends 22 and 24 having a generally square cross-sectional shape
  • numerous other cross-sectional shapes and sizes for attachment to different types of sockets or work tools are also contemplated and within the intended scope of the present invention.
  • ratchet housing portion 14 is configured to contain a number of different components which cooperate to provide the features and functions of the present invention. These components include dual ended drive shaft 20, spool 50, spring 60, cover 70, and retaining clip 72. Furthermore, a ratcheting member 32 is designed to interact with dual ended drive shaft 20 during operation. In one exemplary embodiment as illustrated in Fig. 2, ratcheting mechanism 32 may include a pawl mechanism 33 with a spring engagement member 34 known to those skilled in the art.
  • Fig. 2 shows dual ended drive shaft 20, including first attachment end 22 and second attachment end 24, as generally discussed above. Additionally, dual ended drive shaft 20 includes a tubular portion 25 and a disk portion 26 having a plurality of ratchet teeth 28 incorporated on the circumference thereof. Ratchet teeth 28 are specifically configured to interact with a corresponding plurality of ratchet teeth on ratchet mechanism 32 to provide the ratcheting features of a typical ratchet wrench.
  • wrench 10 may simply incorporate a single direction ratchet mechanism 32 which achieves the ratcheting functions necessary.
  • the drive shaft may ratchet in one direction and be driven in the opposite direction as will be appreciated by those skilled in the art. To achieve reversing operation, the wrench may simply be turned around and the opposite attachment end of the drive shaft used for connection to a work tool.
  • alternative ratchet mechanisms could be incorporated.
  • Spool 50 includes an aperture structured to receive tubular portion 25 of dual ended drive shaft 20 such that spool 50 surrounds drive shaft 20 to enable spool 50 to cooperate with additional structures incorporated into disk portion 26.
  • spool 50 includes a cylindrical central hub 52 surrounded by a first outer wall 54 and a second outer wall 56. This configuration allows cable 42 (shown in Fig. 1) to be wrapped around spool 50 and contained within a cylindrical space between first wall 54 and second wall 56.
  • extending into first wall 54 is a groove 58.
  • Groove 58 is structured to mate with a corresponding coupling mechanism 59 extending from disk portion 26 of drive shaft 20 in order to transfer rotation of spool 50 to drive shaft 20 when the alternative, high speed mode of operation is being used.
  • Coupling mechanism 59 may comprise any suitable coupling mechanism including, for example, a spring loaded pin. Further details regarding spring loaded pin 59 and groove 58 are discussed below in relation to Fig. 5.
  • spring 60 When biased, spring 60 may provide a desired rotational force upon spool 50.
  • Spring 60 may be any suitable spring including, but not limited to, a helical (coil) spring or a power spring.
  • spring 60 may be wrapped around sleeve 62 extending from spool 50.
  • sleeve 62 may not be a necessary component of the present invention, sleeve 62 may provide many benefits including a means for preventing contact between drive shaft 20 and spring 60 that may otherwise interfere with rotation of drive shaft 20.
  • Cover 70 may be utilized to contain the various components as necessary and to prevent access to and contact with the internal components of wrench 10 during operation.
  • Retaining clip 72 may be structured to function as a "locking means" to secure cover 70 in place within housing portion 14.
  • spring 60 may be operably coupled to spool 50 and ratchet housing 14 through any suitable connection means.
  • connection means will be discussed in detail in relation to Figs. 6-9.
  • spring 60 may provide a rotational force upon spool 50 when the spring is biased.
  • actuating pull ring 40 i.e., unwinding cable 42 from spool 50
  • drive dual ended drive shaft 20 causes spool 50 to rotate.
  • spring 60 is coupled to spool 50, the rotation of spool 50 causes spring 60 to become coiled.
  • a spring force is exerted on spool 50 such that when the user releases pull ring 40, the force causes cable 42 to be rewound back onto spool 50.
  • pulling ring 40 causes spring 60 to wind and "power up.” Therefore, when pull ring 40 is subsequently released, the coiled spring 60 begins to uncoil, thus causing spool 50 to rotate. As a result, cable 42 is rewound back onto spool 50.
  • wrench 10 may be designed such that pull ring 40 may be pulled about 18 inches from handle portion 12 during operation.
  • the larger the spool diameter the smaller the number of rotations of the drive shaft for the same length of cable.
  • larger diameter spools may provide a greater amount of torque during operation.
  • the wrench in accordance with the present invention may be designed with a large diameter spool.
  • the wrench in accordance with the present invention may be designed with a small diameter spool.
  • Fig. 3 illustrates a perspective view of one exemplary ratchet housing 14 in accordance with the present invention. Particularly, Fig. 3 illustrates how one exemplary opening 16 may be utilized to contain each of the components discussed above.
  • opening 16 in ratchet housing 14 includes first cavity portion 64, second cavity portion 66, shoulder 68, and channel 69.
  • First cavity portion 64 may be structured to receive and contain spool 50, spring 60, cover 70, and retaining clip 72.
  • first attachment end 22 of dual ended drive shaft 20 may be structured to extend through first cavity portion 64 and cover 70 such that a portion of the attachment end is exposed outside of ratchet housing 14 and available for attachment to a socket or work tool.
  • second cavity portion 66 may be structured to receive and contain disk portion 26 of dual ended drive shaft 20.
  • second attachment end 24 of dual ended drive shaft 20 may be structured to extend through second cavity portion 66 such that a portion of the attachment end is also exposed outside of ratchet housing 14 through an aperture 67 on an opposite side and available for attachment to a socket or work tool.
  • channel 69 may be structured to receive and contain ratcheting mechanism 32.
  • ratchet housing 14 has been previously described as including first cavity portion 64 structured to receive spool 50, spring 60, cover 70, and retaining clip 72, and second cavity portion 66 structured to receive disk portion 26, those skilled in the art will appreciate that numerous other housing designs are contemplated and within the intended scope of the present invention.
  • ratchet housing 14 may alternatively include a single, larger cavity portion structured to contain all components including disk portion 26, spool 50, and spring 60.
  • any suitable housing configuration may be implemented without departing from the intended scope of the present invention.
  • a side view of wrench 10 is shown with ratchet housing portion 14 and handle 12 in broken lines in order to illustrate each of the components discussed above in an assembled state.
  • cable 42 is shown in Fig. 4 to illustrate its positioning relative to spool 50.
  • handle 12 of wrench 10 may include a cable channel 73 structured to guide and contain cable 42 within handle 12.
  • spool 50 is designed to interact with dual ended drive shaft 20 in a predetermined manner so that pulling upon pull ring 40 will cause a cooperative operation.
  • groove 58 and coupling mechanism 59 may be utilized to impart rotational force upon dual ended drive shaft 20 when pull ring 40 is pulled and cable 42 unwinds.
  • Fig. 5 illustrates a perspective view of spool 50 and disk portion 26 of dual ended drive shaft 20.
  • disk portion 26 includes a coupling mechanism, which is shown in Fig. 5 as spring loaded pin 59.
  • pin 59 may be spring loaded in its axial direction.
  • spring loaded pin 59 may be designed so that it recesses into disk portion 26 when an axial force in a direction A is applied to the pin as shown in Fig. 5.
  • a cooperating groove 58 is cut into a surface thereof.
  • the cooperating groove 58 includes a recessed end or shoulder portion 82 and a ramped portion 84.
  • Ramped portion 84 is configured to be essentially flush with the surface of spool 50 at an end 86 thereof.
  • Cooperating groove 58 and spring loaded pin 59 are structured and positioned to specifically interact with one another in order couple the movement of spool 50 with the movement of dual ended drive shaft 20.
  • rotation of spool 50 with respect to disk portion 26 in a first direction will ultimately result in an engagement of these components, while rotation in the opposite direction will not create such engagement.
  • the spring loaded pin and cooperating groove provided above, there is generally no interaction or cooperation between the disk portion 26 and spool 50.
  • shoulder portion 82 of corresponding groove 58 in spool 50 may engage with spring loaded pin 59 of disk portion 26, thus causing disk portion 26 to also rotate in a counterclockwise direction.
  • shoulder portion 82 of groove 58 will not engage spring loaded pin 59. Instead, the spring loaded pin 59 will recess into disk portion 26 and be driven up ramped portion 84 of groove 58.
  • the spring loaded pin 59 of Fig. 5 may be designed such that when spool 50 is rotated clockwise, shoulder portion 82 never engages the pin 59 so as to cause corresponding rotational movement of disk portion 26.
  • spool 50 is illustrated in Fig. 5 as being designed with groove 58 having a substantially flat shoulder portion 82 positioned such that the disk portion may rotate in a counterclockwise direction when spring loaded pin 59 engages groove 58, alternative embodiments are also contemplated.
  • shoulder portion 82 may be moved to the opposite end of the groove 58 so that clockwise movement of spool 50 now drives disk portion 26 clockwise, and counterclockwise movement of spool 50 results in no corresponding movement of disk portion 26.
  • spool 50 and disk portion 26 of dual ended drive shaft 20 are illustrated as including only a single groove 58 and spring loaded pin 59, respectively, embodiments of the present invention including any number of grooves and spring loaded pins are within the intended scope of the present invention.
  • a pair of grooves and a pair of spring loaded pins may be used.
  • a single spring loaded pin and a pair of grooves may be used.
  • each groove 58 is shown with a shoulder portion 82 merely for purposes of example. As a result, shoulder portion 82 may be replaced with an end having any suitable shape or contour, including a generally rounded surface.
  • groove 58 may be replaced with a single, continuous groove having a plurality of ramped portions 84 and shoulder portions 82 (or something equivalent thereto).
  • a single, continuous groove would enable a spring loaded pin 59 to remain within the groove at all times and eliminate the need to have the pin slide across the outer surface of spool 50 as previously described when traveling outside of the groove.
  • one or more grooves may alternatively be formed in disk portion 26, while one or more spring loaded pins or similar connecting means may be placed within spool 50.
  • the position of the grooves and connecting means may be interchanged without departing from the intended scope of the present invention.
  • the spring and pull mechanism can be configured so that the spring itself can be used as the pull mechanism rather than utilizing a separate cable.
  • Fig. 6 is a front view of one exemplary embodiment of spring 60 in accordance with the present invention.
  • spring 60 includes first end 90, second end 92, and a plurality of coil layers 94 formed therebetween.
  • first end 90 of spring 60 includes a contoured portion 96 structured to engage with a first spring engaging means formed in spool 50 in order to secure spring 60 to the spool.
  • contoured portion 96 may be formed by creating a "kink" in a portion of spring 60 at first end 90.
  • second end 92 of spring 60 may include a tab portion 98 structured to contact a second spring engaging means within ratchet housing 14 in order to prevent spring 60 from spinning within ratchet housing 14 and to provide an "anchoring" surface.
  • tab portion 98 may be formed by folding or bending a portion of spring 60 at second end 92 to any suitable angle to allow sufficient contact with, for example, an interior surface of wrench housing 14. As illustrated in Fig. 6, the angle may be about 90 degrees, although numerous other angles are also contemplated and within the intended scope of the present invention.
  • a suitable spring 60 may be a power spring.
  • Typical power springs are designed to provide a constant force regardless of the number of coils formed with the spring. This is advantageous because it provides a smooth, comfortable pull for the user as opposed to an increasing amount of resistance and a large amount of force pulling the cable back into the ratchet housing experienced with other types of springs.
  • spring 60 may be formed from a tempered steel or stainless steel having a thickness between about .004 inches and about .008 inches and a width of about .25 inches.
  • Another advantage of power springs is their long life cycle, which may be upwards of 50,000 cycles or more. This long life cycle minimizes the possibility that spring 60 may ever need to be replaced during the life of the wrench.
  • Fig. 7 is a perspective view of spool 50 illustrating one exemplary first spring engaging means in accordance with the present invention.
  • sleeve 62 of spool 50 includes a spring engaging means comprising a pair of slots 100.
  • the pair of slots 100 is structured to receive contoured portion 96 of spring 60 in order to couple first end 90 of spring 60 to spool 50.
  • additional slots may be used to receive additional contoured portions of spring 60 without departing from the intended scope of the present invention.
  • Fig. 8 is a diagram showing spring 60 of Fig. 6 coupled to spool 50 illustrated in Fig. 7.
  • contoured portion 96 at first end 90 of spring 60 includes a depressed base portion 102 having a pair of arm members 104 extending therefrom.
  • each of the pair of arm members 104 is structured to be received by a corresponding one of the pair of slots 100 in order to couple first end 90 of spring 60 to spool 50.
  • the remainder of spring 60 may then be coiled around sleeve 62 of spool 50 such that substantially all contact between spring 60 and drive shaft 20 is avoided.
  • Fig. 9 is a perspective view of ratchet housing 14 illustrating one exemplary second spring engaging means in accordance with the present invention.
  • tab portion 98 of second end 92 of spring 60 is structured to engage with an interior surface of channel 69.
  • tab portion 98 is structured such that it "catches" on the interior surface of channel 69 near the transition to first cavity portion 64. This configuration not only allows spring 60 to be wound during assembly, but it also allows spring 60 to be pre-loaded.
  • the engagement of spring 60 with the interior surface of channel 69 may help to prevent movement of ratcheting mechanism 32 within channel 69.
  • spring 60 may be coupled to spool 50 and/or ratchet housing 14 with a rivet.
  • spring 60 may be coupled to spool 50 and/or ratchet housing 14 with a suitable adhesive.
  • spring 60 may be welded to spool 50 and/or ratchet housing 14.
  • spring 60 may be coupled to structures other than ratchet housing 14, such as cover 70.
  • various combinations of attachment means may also be used, such as the pair of slots 100 on sleeve 62, the contoured portion 96 on spring 60, and a suitable adhesive.
  • FIGS. 10A and 10B are diagrams illustrating a second exemplary wrench 10A in accordance with the present invention.
  • Wrench 1OA is similar to wrench 10 previously describe in reference to Figs. 1-9, but further includes a slidable drive shaft 120 rather than a "fixed" drive shaft.
  • drive shaft 120 is structured to be slidable between a first position as illustrated in Fig. 10A wherein a first attachment end 122 extends outside of ratchet housing portion 14A, and a second position as illustrated in Fig.
  • wrench 10B wherein a second attachment end 124 extends outside of ratchet housing portion 14A.
  • the function of wrench 10A may be similar to wrench 10 such that, for example, the first attachment end may be utilized for applying a fastener while the second attachment end may be utilized for removing the fastener.
  • wrench 10A provides the advantage of not having two attachment ends extending from the wrench housing at all times, thus making the wrench more compact.
  • first ball connector 130 on first attachment end 122 and second ball connector 132 on second attachment end 124 may be utilized in combination with socket members to temporarily "lock" drive shaft 120 in place in the desired position.
  • Figs. 11 A and 11 B are various perspective views of a gear shaft 134 structured to receive drive shaft 120.
  • gear shaft 134 includes tubular portion 136 and disk portion 138 similar to tubular portion 25 and disk portion 26 previously discussed.
  • Gear shaft 134 further includes first socket 140 and second socket 142 structured to receive first ball connector 130 and second ball connector 132, respectively, as will be described in reference to Figs. 12A and 12B below.
  • Fig. 12A is a cross-sectional view of drive shaft 120 disposed within gear shaft 134 that corresponds with the first position illustrated in Fig. 10A.
  • second ball connector 132 is structured to engage second socket 142 in order to temporarily lock the drive shaft in place.
  • first attachment end 122 may then be used for attachment to a socket or work tool, which may be coupled to first attachment end 122 using first ball connector 130.
  • the user simply applies force in direction 144 in order to push first attachment end 122 into gear shaft 134.
  • the second position of drive shaft 120 is illustrated in Fig. 12B.
  • Fig. 12B is a cross-sectional view of drive shaft 120 disposed within gear shaft 134 that corresponds with the second position illustrated in Fig. 10B. As illustrated in Fig. 12B, when drive shaft 120 is in the second position with second attachment end 124 extending outside of housing 14A, first ball connector 130 is structured to engage first socket
  • second attachment end 124 may then be used for attachment to a socket or work tool, which may be coupled to second attachment end 124 using second ball connector 132.
  • Yet another exemplary embodiment of the present invention includes a wrench attachment structured to be coupled to an existing, standard ratchet type wrench.
  • the wrench attachment itself may include a receiver for attachment to the existing drive shaft of the ratchet wrench, and may also contain an alternative drive mechanism such as that previously described above in reference to Figs. 1-12.
  • the alternative drive mechanism may include a cable and coupling structure, similar in structure and function to the components outlined above.
  • drive forces produced by the ratchet wrench may be simply translated through the attachment piece to an attachment drive, which may be coupled to socket tools.
  • the "alternative mode" of operation may be achieved by pulling on a cable coupled to the attachment drive shaft.
  • One advantage of this configuration includes the ability to cooperate with any existing socket wrench, making the wrench attachment a "universal" device. As a result, the user may experience the benefits of the present invention without having to replace their existing wrench.
  • Fig. 13 illustrates one example of the wrench attachment embodiment in accordance with the present invention.
  • Fig. 13 is a perspective view of a wrench attachment 1OB structured to be coupled to an existing, standard ratchet type wrench 150.
  • wrench attachment 10B includes attachment housing 152, drive shaft 154, cable ring 156, and cable 158.
  • Attachment housing 152 may contain the cable pull mechanism (shown in Fig. 14), which may operably engage drive shaft 154 when cable ring 156 is pulled by the user.
  • standard ratchet wrench 150 is provided with the capability to operate in an alternative mode of operation in order to spin-on or spin-off fasteners at a much higher rate of speed than possible through traditional operation of the wrench.
  • work pieces can easily be attached to drive shaft 154 as necessary.
  • Fig. 14 is a perspective view of wrench attachment 10B of Fig. 13 with attachment housing 152 shown in broken lines so as to depict the internal components of the device.
  • wrench attachment 10B generally includes spool 154, spring 156, cover 158, retaining clip 160, and receiver 162 for attachment to a drive shaft of external ratchet wrench 150.
  • Receiver 162 may further include socket 164 structured to receive a ball-type connection on the drive shaft of external ratchet wrench 150.
  • the cable pull mechanism may be incorporated into a box-end styled ratchet wrench.
  • these box-end styled wrenches may include a traditional opening configured to couple with a standard bolt head or nut.
  • the wrench housing itself may contain a unitary ratchet mechanism cooperating with this box-end structure to allow ratcheting operations.
  • the cable pull mechanism generally outlined above may be easily adapted for operation in these types of wrenches as well.
  • the attachment housing could be configured in a smaller, substantially circular configuration structured to be easily held within a user's hand.
  • many other variations are also possible, all incorporating standard ratcheting operation along with a high speed, alternative mode of operation. This provides additional capabilities for the user which will ultimately save time and energy, thus making the users more efficient.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)

Abstract

L'invention porte sur un ensemble à rochet à multiples entraînements, qui comprend un arbre d'entraînement ayant au moins une extrémité pouvant être fixée à un outil de travail, un boîtier d'entraînement actionnable par un utilisateur pour appliquer une première force d'entraînement à l'arbre d'entraînement, un mécanisme à rochet couplé de façon fonctionnelle à l'arbre d'entraînement pour amener la première force d'entraînement appliquée par l'utilisateur à être transmise à l'arbre d'entraînement, un mécanisme de traction pour générer une seconde force d'entraînement, comprenant une bobine et un câble enroulé autour de la bobine, la seconde force d'entraînement étant générée par traction du câble pour entraîner en rotation la bobine, et un système d'accouplement couplant de façon fonctionnelle le mécanisme de traction et l'arbre d'entraînement et construit pour transformer la seconde force d'entraînement à l'arbre d'entraînement afin d'amener l'arbre d'entraînement à tourner.
PCT/US2008/012037 2008-01-14 2008-10-23 Ensemble à rochet haute vitesse Ceased WO2009091377A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US2089708P 2008-01-14 2008-01-14
US61/020,897 2008-01-14

Publications (1)

Publication Number Publication Date
WO2009091377A1 true WO2009091377A1 (fr) 2009-07-23

Family

ID=40885558

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2008/012037 Ceased WO2009091377A1 (fr) 2008-01-14 2008-10-23 Ensemble à rochet haute vitesse

Country Status (1)

Country Link
WO (1) WO2009091377A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3572188A (en) * 1969-05-21 1971-03-23 William S Christian Jr High speed ratchet wrench
US3786698A (en) * 1973-01-08 1974-01-22 J Rouse Double ratchet wrench
US4099430A (en) * 1976-12-23 1978-07-11 Studola Roger D Rewind ratchet wrench
US4407175A (en) * 1980-09-08 1983-10-04 Graham Douglas I Tool for rotating threaded fasteners
US4592254A (en) * 1982-05-24 1986-06-03 Wallis Frederick A Ratchet wrench

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3572188A (en) * 1969-05-21 1971-03-23 William S Christian Jr High speed ratchet wrench
US3786698A (en) * 1973-01-08 1974-01-22 J Rouse Double ratchet wrench
US4099430A (en) * 1976-12-23 1978-07-11 Studola Roger D Rewind ratchet wrench
US4407175A (en) * 1980-09-08 1983-10-04 Graham Douglas I Tool for rotating threaded fasteners
US4592254A (en) * 1982-05-24 1986-06-03 Wallis Frederick A Ratchet wrench

Similar Documents

Publication Publication Date Title
EP2599590B1 (fr) Outil d'insertion de filet rapporté hélicoïdal sans queue
JP3181981U (ja) ラチェット式トルクスリーブ
US9381625B2 (en) Electrical wrench
AU2012287340B2 (en) Box wrench with split gear body and interchangeable drive insert
US7080578B2 (en) Hand tool with impact drive and speed reducing mechanism
US6418821B1 (en) Working tool
CN106826646B (zh) 力矩放大装置
EP2349648A1 (fr) Douille a serrage rapide et ensemble retenue de clé hexagonale pour outil de pose d'éléments de fixation
TW200812760A (en) Power-driven torque intensifier
CN207014254U (zh) 具锁定及释放功能的扭力套筒
JPH10217140A (ja) レンチ
US20230294255A1 (en) Ratcheting tool
CN202465165U (zh) 一种双棘轮手动式绞车
WO2009091377A1 (fr) Ensemble à rochet haute vitesse
CN1907651A (zh) 丝锥和板牙用棘轮扳手组件及适配器
WO2020162268A1 (fr) Outil de fixation de vis
US20230249951A1 (en) Brake Winch with Reverse Release and Self-locking Function
US20060288821A1 (en) Ratchet wrench apparatus
WO2014190938A1 (fr) Clé à douilles
JP6188414B2 (ja) 半自動式トルクレンチ
JP3129070U (ja) ボルト・ナット締付装置
JPH11151534A (ja) フレアー工具
JP2601016Y2 (ja) ラチェットレンチ及び締付工具
CN218440287U (zh) 自对中联轴器
US20250229386A1 (en) Adjustable wrench

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 08870904

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 08870904

Country of ref document: EP

Kind code of ref document: A1