WO2006087638A2 - Tournevis a tiges multiples pourvu d'outils rapportes amovibles et remplaçables - Google Patents

Tournevis a tiges multiples pourvu d'outils rapportes amovibles et remplaçables Download PDF

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Publication number
WO2006087638A2
WO2006087638A2 PCT/IB2006/000594 IB2006000594W WO2006087638A2 WO 2006087638 A2 WO2006087638 A2 WO 2006087638A2 IB 2006000594 W IB2006000594 W IB 2006000594W WO 2006087638 A2 WO2006087638 A2 WO 2006087638A2
Authority
WO
WIPO (PCT)
Prior art keywords
bit
driver
tool
housing
assembly
Prior art date
Application number
PCT/IB2006/000594
Other languages
English (en)
Inventor
Y. C. Guang
Original Assignee
Dragonfire Group Holdings Limited
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 Dragonfire Group Holdings Limited filed Critical Dragonfire Group Holdings Limited
Publication of WO2006087638A2 publication Critical patent/WO2006087638A2/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25G—HANDLES FOR HAND IMPLEMENTS
    • B25G1/00—Handle constructions
    • B25G1/08—Handle constructions with provision for storing tool elements
    • B25G1/085—Handle constructions with provision for storing tool elements for screwdrivers, wrenches or spanners

Definitions

  • the present invention relates to multi-bit drivers and more particularly relates to multi-bit drivers, wherein the tool bits are slidably retained within the main housing, are selected for use using a forward manual action by a user, and are retracted by a rearward manual action by a user.
  • multi-bit drivers are quite convenient to use since it is quick and easy to change between bite; however, they have a definite limitation in that only a fixed number of tool bits, typically six tool bits, can be fit into the housing of the driver. If a user needs another size or type of tool bit other than the ones that are included with the multi-bit driver, another tool must be used, which is inconvenient.
  • U.S. Patent 6,332,384 issued December 25, 2001, to Cluthe discloses a multi-bit screwdriver wherein a plurality of bit assemblies are slidably mounted within the housing of a screwdriver.
  • Each bit assembly has a fixed tool bit and a bit extension pivotally connected at a front end to the back end of the tool bit
  • a disc shaped actuator button disposed at the back end of the bit extension is disposed exteriorly to the housing for selective manual manipulation of the bit assembly.
  • a locking element engages a groove in the tool bit to lock it in place.
  • none of the tool bits are removable and replaceable.
  • the Cluthe multi-bit screwdriver as described above is marketed under the name RETRACT- A-BIT TM .
  • RETRACT-A-BIT TM a very similar but slightly more advanced version multi-bit screwdriver is marketed under the name RETRACT-A- BIT TM PRO.
  • a novel multi-bit driver comprising a housing and a plurality of bit assemblies operatively retained within, the housing, each bit assembly having a tool bit member. At least one of the plurality of bit assemblies has a base portion and a tool bit member removably and is replaceably mountable on the base portion.
  • a bit chuck is disposed at one end of the housing for receiving each tool bit member singularly in torque transmitting relation, and includes a bit-receiving opening for permitting each tool bit member singularly to extend therethrough.
  • An actuator means extends from each the bit assembly exteriorly to the housing for operative engagement by a user, for co-operative movement of the actuator means and the bit assembly between a retracted configuration, a forwardly extended in-use configuration whereat the bit assembly is positioned such that the tool bit member extends outwardly from the housing through the opening of the bit chuck, and back to the retracted configuration. There are means to retain the bit assemblies in the forwardly extended in-use configuration.
  • Figure 1 is a perspective view from the front of the first preferred embodiment multi-bit driver according to the present invention, with all of the bit assemblies in a retracted configuration;
  • Figure 2 is a perspective view of the multi-bit driver of Figure 1, but with a selected bit assembly in a forwardly extended in-use configuration;
  • Figure 3 is a perspective view of the multi-bit driver of Figure 2, but with the tool bit member removed from the base portion of the bit assembly,
  • Figure 4 is a perspective view similar to Figure 2, but with another tool bit member installed in the base portion of the bit assembly;
  • Figure 5 is a cross-sectional side elevational view taken along section line A-A of Figure 1, showing the bit assemblies in their retracted configuration;
  • Figure 6 is a cross-sectional side elevational view similar to Figure 5, but showing one bit assembly in a forwardly extended in-use configuration
  • Figure 7 is a cross-sectional side elevational view similar to Figure 6, but with the toot bit member removed from
  • Figure 8 is a cross-sectional side elevational view similar to Figure 6, but with another tool bit member installed in the base portion of the bit assembly;
  • Figure 9 is an enlarged cut-away side elevational view of a portion of the first preferred embodiment multi-bit driver of Figure 6;
  • Figure 10 is an enlarged cut-away side elevational view of a second preferred embodiment multi-bit driver according to the present invention.
  • Figure 11 is a cut-away side elevational view of a third preferred embodiment multi-bit driver, according to the present invention.
  • Figure 12 is a cut-away side elevational view of a fourth preferred embodiment multi-bit driver according to the present invention.
  • Figure 13 is a cut-away side elevational view of a fifth preferred embodiment multi-bit driver according to the present invention.
  • Figure 14 is a cut-away side elevational view of a sixth preferred embodiment multi-bit driver according to the present invention.
  • Figure 15 is a cut-away side elevational view of a seventh preferred embodiment multi-bit driver according to the present invention.
  • Figure 16 is a cut-away side elevational view similar to Figure 15, but with the base portion of the bit assembly shown partially cut away.
  • Figures 1 through 16 of the drawings illustrate the first preferred embodiment of the multi-bit driver of the present invention
  • Figure 10 illustrates the second preferred embodiment of the niulti-bit driver of the present invention
  • Figure 11 illustrates the third preferred embodiment of the multi-bit driver of the present invention
  • Figure 12 illustrates the fourth preferred embodiment of the multi-bit driver of the present invention
  • Figure 13 illustrates the fifth preferred embodiment of the multi-bit driver of the present invention
  • Figure 14 illustrates the sixth preferred embodiment of the multi-bit driver of the present invention
  • Figures 15 and 16 illustrate the sixth preferred embodiment of the multi-bit driver of the present invention.
  • the multi-bit driver 20 comprises a housing 30 defining a longitudinal axis "L", and a handle portion 40, a central transition portion 50, and a cone portion 60.
  • the housing 30 tapers at the cone portion 60 from the central transition portion 50 to a bit chuck 62 that will be described in greater detail subsequently.
  • the central transition portion 50 and the cone portion 60 could be one integral piece.
  • the housing 30 also comprises a longitudinally directed central column 32 disposed within the housing 30.
  • a plurality of channels 34 specifically six in the preferred embodiment, surround and define the central column 32.
  • An end cap 23 is secured onto the back end of the housing 30 by means of a threaded fastener 31 that engages a cooperating bore hole 33 in the central column 32.
  • a plurality of bit assemblies as indicated by the general reference numeral 70, specifically six bit assemblies 70 in the preferred embodiment, are operatively retained within the housing 30.
  • the bit assemblies 70 each have an actuator attached thereto.
  • Each bit assembly 70 has a tool bit member 72 at its front end and a bit extension SO at its back end.
  • the bit extension 80 is operatively attached in hinged relation, and preferably pivotaily attached to the tool bit member 72.
  • a living hinge arrangement could be used to operatively attach in hinged relation the bit extension 80 to the tool bit member 72.
  • the tool bit member 72 and the bit extension 80 could be joined to form a single unit alternative embodiment bit assembly, such that the bit extension portion of the bit assembly or the joint or both is sufficiently flexible in the radial direction and rigid enough to reduce its degree of freedom.
  • the housing 30 comprises a substantially transparent forward portion that permits viewing of the tool bit members 72.
  • the substantially transparent forward portion is the cone portion 60 that extends from the central transition portion 50 to the bit chuck 62.
  • Each bit extension SO has a contact surface 82 at a back end 86, as will be discussed in greater detail subsequently, and is made from a suitable rigid material such as aluminum, cold rolled steel, plastic, and so on.
  • Each tool bit member 72 has a first stop surface 74 and each bit extension 80 has a second stop surface 81, and defines a longitudinal tool bit axis "T". Further, each tool bit member 72 comprises an ovc ⁇ nolded plastic back end portion 76. The tool bit member 72 is pivotaily attached at its overmolded plastic back end portion 76 to the bit extension 80 for pivotal movement about a pivot axis "P " oriented substantially transversely to the longitudinal tool bit axis " T". In the forward-oriented angular position, the first and second stop surfaces 74, 81 abut against each other in force transmitting relation, as will be discussed in greater detail subsequently.
  • At least one of the bit assemblies 70 and in the first preferred embodiment as illustrated, alt of the bit assemblies 70, have a base portion 71 and a tool bit member 72.
  • Each tool bit member 72 is removably and replaceably mountable in a corresponding base portion 71 by means of a magnet 73 mounted in the base portion 71.
  • a tool bit member 72 is mounted within the base portion 71.
  • the base portion 71 of the bit assembly 70 has a hexagonal recess 74 with the magnet 73 secured in place at the bottom of the hexagonal recess 73.
  • the tool-bit member 72 is shaped and dimensioned to slide into and out of the hexagonal recess 74, yet fit securely in the hexagonal recess 74 such that the tool bit member 72 is rotated by the base portion 71.
  • the tool bit 71 has been removed from the base portion 71.
  • a new tool bit 71 has been mounted in the base portion 71, and is retained there in removable and replaceable relation by the magnet 73. In this manner, the tool bit member 72 is removably and replaceably mountable on the base portion 71.
  • the multi-bit driver 20 can present any type of tool bit member 72 for use, whether it be a screwdriver bit, a drill bit, an alien key bit, and so on.
  • the means for receiving the tool bit members 72 comprises a bit chuck 62 disposed at one end of the. housing 30 and integrally formed within the housing 30 specifically with the cone portion 60, so as to be substantially solid.
  • Tne bit chuck 62 includes a bit-receiving opening 64 for permitting the tool bit members 72 singularly to extend therethrough.
  • the bit-receiving opening 64 is lengthy enough along the longitudinal axis "L” and is of suitable dimension to retain a tool bit member 72 received therein substantially aligned with the longitudinal axis "L".
  • the housing 30 also comprises a rearward feeing abutment surface ⁇ 0 disposed within said housing 30, preferably on the cone portion 60 adjacent the bit chuck 62.
  • the rearward facing abutment surface 90 receives a portion of the overmolded plastic back end portion 76 tnereagainst, as will be discussed in greater detail subsequently.
  • a forward racing abutment surface 92 is disposed within the housing 30, preferably on the central column 32.
  • the forward facing abutment surface 92 receives the contact surface S2 of the bit extension 30 thereagainst, as will be discussed in greater detail subsequently.
  • each actuator means extends from each bit assembly 70 exteriorly to the housing 30 for operative engagement by a user.
  • each actuator means comprises a flexible actuator member 102.
  • Each actuator member 102 comprises a unitary molded plastic piece and has an attachment portion 110 and a mounting portion 120 connected together by a flexible connector portion 130.
  • the flexible connector portion 130 may be resiliency flexible so as to return to its original shape.
  • the flexible actuator member 102 does need to be sufficiently rigid to be able to push the attachment portion HO laterally so as to move the back end 86 of the bit extension 80 in a lateral direction onto the abutment surface on the central column 32.
  • Bach actuator member 102 is operatively attached in hinged relation to a co-operating- ⁇ t assembly -70 -at- the- attachment portion 110.
  • each actuator member 102 is operatively attached in pivoting relation to a co-operating bit assembly 70 by means of a small pin portion 122 projecting laterally outwardly from the attachment portion 110.
  • the small pin portion 122 extends through a co-operating aperture 84 in the bit extension 80 adjacent me back end 86 thereof.
  • a living hinge arrangement could be used to operatively attach the actuator member 102 in hinged relation to a co-operating bit assembly 70.
  • the mounting portion 120 comprises a stem portion 122 that extends through a slot 36 and terminates at a button portion 124 disposed exteriorly to the housing 30.
  • the actuator member 102 is mounted in slidable relation within a slot 36 that is oriented longitudinally along the housing 30.
  • the button portion 124 is preferably slightly concavely shaped and optionally has formed therein a representation
  • the representation 106 of the shape of the attached tool bit member 72, in order to make possible the identification of a desired tool bit member 72 when it is in the housing 30. It should be understood that the representation 106 would only properly represent one type of tool bit member 72, and that when a tool bit member 72 is changed, the representation may be incorrect. Accordingly, the button portion for each of the tool bit members 72 that is interchangeable, might not include a representation 106.
  • Each actuator member 102 further comprises a flexible biasing arm 116 projecting outwardly from the mounting portion 120 for biased engagement with the central column 32. In this manner, the actuator member 102 is fractionally retained within the slot 36 for controlled sliding movement, in order to minimize looseness and play.
  • the actuator member 102 extends from a bit assembry 70 exteriorly to the housing 30, as aforesaid, for co-operative movement of the actuator member 102 and the bit assembly 70 between a retracted configuration, and a forwardly extended in-use configuration, and back to the retracted configuration. There is also a forwardly extended intermediate configuration between the retracted configuration and the forwardly extended in-use configuration.
  • the bit assemblies 70 are retained within the housing 30.
  • the tool bit member 72 extends partially outwardly from the housing 30.
  • tbe overmolded plastic back end portion 76 on the bit assembry 70 contacts the rearward facing abutment surface 90 on the cone portion 60, which contact limits the forward motion of the bit assembly 70.
  • Further forward sliding movement of the actuator member 102 causes the bit assembly 70 to move to its fbrwardly extended in-use configuration. More specifically, the forward movement of the user engageable button portion 124 on the mounting portion 120 of the flexible actuator member 102 causes flexible connector portion 130 to move the attachment portion 110 to the end of the channel 34.
  • bit assembly 70 is (hen in its forwardly extended in-use configuration whereat the bit assembly 70 is positioned, such that the tool bit member 71 extends outwardly from the housing 30 through the bit receiving opening 64 of the bit chuck 62.
  • the contact surface 82 of the bit extension 80 of the bit assembly 70 is disposed in longitudinal force transmitting engagement against the forward facing abutment surface 92 on the central column 32, to preclude rearward movement of the bit assembly 70 due to substantially longitudinally directed forces transmitted from the tool bit 72.
  • the contact surface 82 of the bit extension 80 moves slightly past the center of the contact surface 82 of the bit extension 80.
  • the contact surface 82 of the bit extension 80 disposed in longitudinal force transmitting engagement against the forward facing abutment surface 92, and the bit assembly 70 in contact with the rearward facing abutment surface 90. Accordingly, the overmolded plastic back end portion 76 is compressed slightly so as to ensure that the bit assembly 70 is retained snugly between me forward facing abutment surface 92 and the rearward facing abutment surface 90.
  • each longitudinal channel 34 for each bit assembly 70, and each longitudinal channel 34 has a longitudinal guide surface 35.
  • the longitudinal channel 34 and longitudinal guide surface 35 each have a front end 34f, 35f, respectively, and a back end 34b, 35b, respectively.
  • the forward facing abutment surface 92 on the central column 32 is disposed at die front end of each longitudinal channel 34 and each longitudinal guide surface 35, and is oriented substantially transversely to each longitudinal channel 34 and each longitudinal guide surface 35.
  • each bit assembly 70 slides along its longitudinal channel 34 with at least part of the bit assembly 70 sliding along me longitudinal guide surface 35, between the retracted configuration and the forwardly extended in-use configuration, specifically before the forwardly extended intermediate configuration.
  • the back end 86 of the bit extension 80 reaches the front end 34f of the longitudinal channel 34 and the front end 35f of the longitudinal guide surface 35, the back end 86 of the bit extension 80 is moved in a lateral direction over the abutment surface on the central column 32, to essentially "lock" the bit assembly 70 in place.
  • This function happens automatically as the bit assembly 70 is moved forwardly into its forwardly extended in-use configuration. Accordingly, moving a bit assembly 70 from its retracted configuration to its forwardly extended in-use configuration is a one step process.
  • the housing 30 further.comprises a tool bit directing portion 29.
  • the tool bit directing portion 29 comprises a ramp disposed between the front end of the longitudinal channel 34 and the bit chuck 62.
  • a tool bit 72 slidingly contacts the ramp 29, as it moves from its retracted configuration towards its forwardly extended in-use configuration, the tool bit 72 is directed towards the bit-receiving opening 64 in the bit chuck 62, thus helping the tool bit 72 to subsequently enter the bit-receiving opening 64.
  • the tool bit 72 also typically deflects off the cone portion 60 of the housing 30 adjacent the bit-receiving opening 64 in the bit chuck 62, in order to help guide the tool bit 72 into the bit-receiving opening 64.
  • the bit chuck 62 aligns the tool bit 72 along me longitudinal axis "L".
  • the contact surface 82 of the bit assembly 70 is disposed in longitudinal force transmitting engagement against the abutment surface, slightly past (orover) the longitudinal axis "L” with respect to the actuator means. Accordingly, the tool bit axis "T” would be oriented at slight angle with respect to the longitudinal axis "L”.
  • This type of function is commonly referred to as over-the-centre, helps ensure that the rearwardly directed longitudinal forces do not push the back end 86 of the bit extension 80 off the forward facing abutment surface 92, thus providing proper operation, of the multi-bit driver against even strong rearwardly directed longitudinal forces from the tool bit 72.
  • FIG 10 shows a second preferred embodiment of the multi-bit driver according to the present invention, as indicated by the general reference numeral 220.
  • the second preferred embodiment multi-bit driver 220 is similar to the first preferred embodiment multi-bit driver 20 except that the magnet 273 is in the tool bit member 272.
  • FIG. 11 shows a third preferred embodiment of the multi-bit driver according to the present invention, as indicated by me general reference numeral 320.
  • the third preferred embodiment multi-bit driver 320 is similar to the first preferred embodiment multi-bit driver 20 except that the base portion 371 portion of each bit assembly 370 comprises a magnetic material so as to retain said tool bit member 372 in place on said base portion 371 of the respective bit assembly 370.
  • FIG 12 shows a fourth preferred embodiment of the multi-bit driver according to the present invention, as indicated by the general reference numeral 420.
  • the fourth preferred embodiment multi-bit driver 420 is similar to the first preferred embodiment multi-bit driver 20 except that the tool bit member 472 comprises a magnetic material so as to retain said tool bit member 472 in place on said base portion 471 of the respective bit assembly 470.
  • FIG. 13 shows a fifth preferred embodiment of the multi-bit driver according to the present invention, as indicated by the general reference numeral 520.
  • the fifth preferred embodiment muti-bit driver 520 is similar to the first preferred embodiment multi-bit driver 20 except that there is only one of the bit assemblies 570 has a base portion 571 and a tool bit member 572 removably and replaceably mountable on said base portion 571.
  • FIG 14 shows a sixth preferred embodiment of the multi-bit driver according to the present invention, as indicated by the general reference numeral 620.
  • the sixth preferred embodiment multi-bit driver 620 is similar to the first preferred embodiment multi-bit driver 20 except that the tool bit member 672 is removably and replaceably mountable on the base portion 671 of the respective bit assembly 670 by means of a ball bearing 690 biased by a spring member 692 retained within a recess 693, into an annular channel 673 on the tool bit member 672.
  • FIGS 15 and 16 show a seventh preferred embodiment of the muM-bit driver according to the present invention, as indicated by the general reference numeral 720.
  • the seventh preferred embodiment multi- bit driver 720 is similar to the first preferred embodiment multi-bit driver 20 except that the base portion 771 of the bit assembly 770 is shaped and dimensioned to receive a standard size tool bit member 772. More specifically, as can be best seen in Figure 16, the base portion 771 of the bit assembly 770 has a hexagonal recess 774 with a thin magnet 773 secured in place at the bottom of the hexagonal- recess 774.
  • the tool bit member 772 is shaped and dimensioned to slide into and out of the hexagonal recess 774, yet fit securely in the hexagonal recess 774 such that the tool bit member 772 is rotated by the base portion 771. In this manner, the tool bit member 772 is removably and replaceably mountable on the base portion 771. Accordingly, conventional size tool bits can be used with, the multi- bit driver of the present invention.
  • the present invention provides a multi-bit driver that is not limited as to the number of driver bits it can present for use, which feature is unknown in the prior art.

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

Abstract

L'invention concerne un tournevis à tiges multiples qui comprend un logement et une pluralité d'ensembles tiges retenus de manière fonctionnelle dans le logement. Au moins un des ensembles tiges comprend une partie de base et un élément d'outil rapporté monté amovible et remplaçable sur la partie de base. Un mandrin situé dans le logement est destiné à recevoir chaque élément d'outil rapporté individuellement dans une relation de transmission de couple et comprend une ouverture de réception d'outil conçue pour que chaque élément d'outil rapporté puisse y être inséré individuellement. Le logement comprend un mat sensiblement transparent situé sur la partie avant qui permet de voir les éléments d'outil rapporté. Un actionneur part vers l'extérieur depuis chaque ensemble tiges jusqu'au logement de manière à être actionné par un utilisateur pour déplacer de façon solidaire le moyen d'actionnement et l'ensemble tiges entre une position rétractée et une position déployée vers l'avant lors de l'utilisation.
PCT/IB2006/000594 2005-02-15 2006-02-15 Tournevis a tiges multiples pourvu d'outils rapportes amovibles et remplaçables WO2006087638A2 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US65320605P 2005-02-15 2005-02-15
US60/653,206 2005-02-15
CA 2537447 CA2537447C (fr) 2005-02-15 2006-02-15 Machine-outil a outils multiples avec outils amovibles et remplacables

Publications (1)

Publication Number Publication Date
WO2006087638A2 true WO2006087638A2 (fr) 2006-08-24

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PCT/IB2006/000594 WO2006087638A2 (fr) 2005-02-15 2006-02-15 Tournevis a tiges multiples pourvu d'outils rapportes amovibles et remplaçables

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CA (1) CA2537447C (fr)
WO (1) WO2006087638A2 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015106337A1 (fr) * 2014-01-17 2015-07-23 Thunder Innovations Inc. Outil d'entraînement de mèche et dispositif à utiliser avec celui-ci
CN113143390A (zh) * 2021-02-25 2021-07-23 中国人民解放军空军军医大学 便于更换刀头的骨科手术用锯刀

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3747602B1 (fr) * 2013-10-28 2023-06-28 Retract-A-Bit Inc. Outil à main à bouts multiples
WO2015164946A1 (fr) * 2014-05-01 2015-11-05 Gerard Grand Outil à plusieurs embouts doté d'un mécanisme à rochet bidirectionnel
CN112207752A (zh) * 2020-10-09 2021-01-12 厦门南旗佰特精密工具制造有限公司 一种推出式扭矩施加工具

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015106337A1 (fr) * 2014-01-17 2015-07-23 Thunder Innovations Inc. Outil d'entraînement de mèche et dispositif à utiliser avec celui-ci
US11370103B2 (en) 2014-01-17 2022-06-28 Thunderchuck Innovations Inc. Bit driving tool and device for use therewith
CN113143390A (zh) * 2021-02-25 2021-07-23 中国人民解放军空军军医大学 便于更换刀头的骨科手术用锯刀
CN113143390B (zh) * 2021-02-25 2022-07-29 中国人民解放军空军军医大学 便于更换刀头的骨科手术用锯刀

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Publication number Publication date
CA2537447A1 (fr) 2006-08-15
CA2537447C (fr) 2012-04-24

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