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
  • B25B13/02—Spanners; Wrenches with rigid jaws
  • B25B13/08—Spanners; Wrenches with rigid jaws of open jaw type

Definitions

• the present invention relates to a flat wrench with alternating and manual rotation control operating with a certain angular movement.
• the main object of this invention lies in the fact that between two successive rotation commands, the flat key always remains in contact with the object which is screwed or unscrewed.
• the state of the art can be defined by the document EP-A-0. 580. 177, which proposes a screw wrench of rapid use, which comprises a short jaw and a long jaw connected by a groove, the jaws have short and long tacking surfaces, which are generally parallel but which may be slightly inclined with respect to each other.
• the groove generally has a smooth surface portion adjacent to the surface of the short jaw, inclined at an angle of at least 120 degrees (°) and connected by a rounded hollow of the short jaw. This smooth surface portion can be slightly convex with a radius twice the distance between the two jaws.
• the rest of the groove is rounded, and its shape and dimensions are such that it is only blocked when it is in contact with the jaw attack surfaces.
• each fork is formed by two branches which make up a jaw.
• At least one of the branches has at least one movable roller housed in at least one housing formed in the body of the fork, ledi t housing is provided with an opening opening at the jaw, the tightening torque is obtained by action at least one movable roller which is blocked by the fact of the bracing obtained between the sides of the nut, the faces of the housing and the branches of the fork.
• Ledi t movable roller is moved in its housing between a retracted position in the ledi t housing and a bracing position with the nut; ledi t movable roller is so t free in rotation and in translation, so t blocked from the fact of 1 bracing.
• This invention effectively meets the needs of users by proposing a wrench having a recovery at 30 ° by constantly keeping the throat of the fork in contact with the nut.
• this bracing key is of complex structure and therefore of high cost.
• Document US-A-4. 889. 020 relates to an open-end wrench that can be used with a nut, the operating cinema of which makes it possible to avoid having to separate the fork from the nut during the return movement.
• the present invention provides a solution, since the recovery takes place at 30 ° while having constant contact between the nut and the groove of the fork. For this, the legs of the fork are inert, and the alternative return movement of the key is due to the only cutting of the jaws of the fork. The structure is therefore simpler than the previous key and lower manufacturing cost.
• the present invention relates to a flat key with alternating and manual rotation control operating with an angular movement, of the type comprising a longitudinal handle provided, at at least one of its ends, with a fork intended to screw and / or to unscrew a hexagonal object such as a nut, a screw or the like; the branches of the fork have thrust zones for screwing and / or unscrewing, and the groove of the fork, located between the two branches, allows the correct positioning of the hexagonal object during screwing and / or unscrewing, characterized by the fact that each branch comprises two thrust zones, an apical zone and a basal zone, and that the throat of the fork comprises at least two bosses acting as bearing zones.
• the thrust zones are flat and the two straight lines passing through the plane of the apical zone of one of the branches and through the plane of the basal zone of the other branch define an intersection corresponding to the axis of rotation of said object and an angle ⁇ between the two thrust zones of the same branch which is between 30 and 33 ° for a recovery of the object at 30 °.
• the thrust zones are curved and the two straight lines passing through the tangent of the apical zone of one of the branches and through the tangent of the basal zone of the other branch define an intersection corresponding to l axis of rotation of said object and an angle ⁇ between the two thrust zones of the same branch which is between 30 and 33 ° for a recovery of the object at 30 °.
• the plan of the area of thrust, located at the end of one of the branches, called the apical pushing surface is substantially parallel to the plane of the pushing zone, located at the base of the other branch, called the basal pushing surface.
• the tangent of the thrust zone located at the end of one of the branches, called the apical thrust surface, is substantially parallel to the tangent of the thrust zone, located at the base of the other branch, called the basal thrust surface.
• the invention also relates to a flat key with alternating and manual rotation control operating with an angular movement, of the type comprising a longitudinal handle provided, at at least one of its ends, with a fork intended to screw and / or unscrew a hexagonal object such as a nut, screw or the like; the branches of the fork have thrust zones for screwing and / or unscrewing, and the groove of the fork, located between the two branches, allows the correct positioning of the hexagonal object during screwing and / or unscrewing, characterized by the fact that one of the branches comprises a thrust zone, that the other branch comprises two thrust zones, an apical zone and a basal zone, and that the throat of the fork comprises at least two bosses acting as zones support.
• the contact surface between one of the thrust zones and one of the sections of the hexagonal object is between 2 and 7%.
• the distance separating the center or the point of contact with the hexagonal object from one of the thrust zones and the angle between two sides of said hexagonal object, the closest, is between 3 and 8%.
• the top of the first boss is located at approximately 40 ° and 110 ° from the two basal thrust surfaces relative to the axis of rotation of the hexagonal object, and the apex of the second boss is situated at approximately 70 ° and 80 ° from said two basal thrust surfaces, - the two apices being separated by an angle of 30 °.
• the top of the first boss is located at substantially 100 ° and 50 ° from the two basal thrust surfaces relative to the axis of rotation of the hexagonal object
• the top of the second boss is located at approximately 70 ° and 80 ° from said two basal thrust surfaces; the two vertices being separated by an angle of 30 °.
• the top of the third boss is located at substantially 100 ° and 50 ° from the two basal thrust surfaces.
• the length of the boss slopes is between 10 and 16%.
• the angle between two adjacent slopes of a boss or two different bosses is between 120 and 125 °.
• the fork is present over substantially 215 ° from the periphery of the hexagonal object.
• the spacing of the legs of the fork is adjustable by means of an adjustment device of the adjustable wrench type.
• the fork is in one piece.
• the fork consists of two parts, a first part consisting of one of the legs of the fork, which is movable relative to a second part, and the second base part consisting of the other branch and throat of said fork which are integral with the handle.
• the first part is movable in rotation.
• the first movable part is in translation.
• FIG. 1 represents a front view of the fork of a flat key according to the invention, the fork being able to receive, in two different positions, the same nut.
• FIG. 2 represents a view identical to the previous one of a second embodiment of the present invention.
• FIG. 3 represents a view identical to FIG. 2, but in which, the nut has undergone a rotation of 30 ° with respect to FIG. 2.
• FIG. 4 represents a detail along A of FIG. 3.
• FIG. 5 represents a detail along B of FIG. 3.
• FIG. 6 represents a view identical to views 2 and 3, in which no nut is put in place.
• FIG. 7 represents a view identical to FIG. 6, in which the nut is represented, a first time, in solid line, and a second time, in broken line, these two positions characterizing the two possibilities of taking account of said nut by the key with an offset of 30 ° between the two positions.
• FIG. 8 represents a view identical to FIGS. 2, 3, 6 and 7, in which all of the positions, for the recovery between the first and the second position, are shown for the nut.
• FIG. 9 represents a front view of the fork of a flat key according to a third embodiment, the fork receiving a nut.
• FIG. 10 represents a view identical to FIG. 9, without the nut, showing that the fork is in two parts, the first part being movable in rotation relative to the second part. This first part is shown in solid and thick lines in one of the extreme positions and in solid and fine lines in the other extreme position.
• FIG. 11 represents a view, identical to FIG. 10, of a fork according to a fourth embodiment, where the first part is movable in translation relative to the second part.
• FIG. 12 represents a view identical to FIGS. 2 and 3 according to another embodiment which, unlike FIGS. 1 to 11 where there are four thrust zones in total, comprises only three thrust zones, two of which cooperate in this figure for screwing.
• FIG. 13 represents a view identical to FIG. 12, but after the nut has been taken up at 30 ° by the key, so that two of the thrust zones cooperate in this figure for unscrewing.
• One of the thrust zones is common to FIGS. 12 and 13, while the other is different.
• FIG. 14 also represents an embodiment with three thrust zones, but this embodiment is inspired by FIG. 11, since one of the branches is movable in translation relative to the other.
• references assigned to the different elements are identical between all of the embodiments when the element does not undergo significant changes in its structure or its function.
• the invention relates to a flat key with alternating and manual rotation control 1.
• the latter 1 is conventionally broken down by a longitudinal handle 2, which carries, at at least one of its ends, a fork 3, as shown in the set of figures.
• This fork 3 has two branches 10 and 20, which are associated with each other by a groove 5.
• the two branches 10 and 20 and the groove 5 constitute the jaws which will allow the screwing and / or unscrewing of the hexagonal object or nut 4.
• FIG. 3 A first position is well represented in FIG. 3, where two thrust zones are present, which are surrounded by two circles A and B, the details of which are represented in FIGS. 4 and 5, with a scale of 1 to 3.
• the second position is substantially that shown in FIG. 2.
• This figure denotes that each branch 10 and 20 each has two thrust zones referenced 11 and 12 for the first branch 10, and 21 and 22 for the second branch 20.
• the push zones 11, 12, 21 and 22 operate in duo, that is to say that the apical push zone 11 functions with the basal push zone 22, while the basal zone 12 works with apical zone 21.
• the intersection passes through the axis of rotation 9 of the nut 4.
• the essential object of the present invention is to allow a recovery of 30 °.
• the angle which exists between two thrust surfaces of the same branch, for example 21 and 22, and the axis of rotation 9, is an angle ⁇ , which is substantially 30 °, of course this value is identical for the first fork 10 and the thrust surfaces 11 and 12.
• the groove 5 also requires the presence of support zones which facilitate the correct positioning of the nut 4 relative to the thrust zones 11, 12, 21 and 22. According to Figures 2 and following, these support zones are formed by two bosses 6 and 7, which each have two support zones.
• FIG. 1 another embodiment proposes three bosses 6, 7 and 8 for the correct positioning of the nut 4.
• the angle ⁇ represented in FIG. 2, which exists between two adjacent slopes of a boss 6, 7 or 8, or two different slopes of two adjacent bosses 6 and 7 or 7 and 8, is between 120 and 125 °.
• each slope of the bosses 6 and 7 is between 10 and 16% of the length of the dimension on flat C of the hexagonal object as shown in Figure 3, this dimension on flat C being d 'a value of 100%.
• the distance D, separating two substantially parallel thrust zones 12 and 21 is 100%
• the distance E, separating the two other substantially parallel thrust zones 11 and 22, is between 101 and 105%.
• first boss 6 is located at approximately 40 ° and 110 ° from the two basal thrust zones 12 and 22, that the top of the second boss 7 is situated at substantially 70 ° and 80 ° from these two surfaces 12 and 22, and that finally the third boss 8 is located at substantially 100 ° and 50 ° from said surfaces 12 and 22.
• the contact surface F between one of the thrust surfaces 11, 12, 21 or 22, and the object hexagonal 4 is between 2 and 7%.
• this value when it is the basal push zone, this value is 5% whereas, when the zone concerned is the apical push zone, this value is 4%.
• the distance G which separates the center of one of the thrust surfaces 11, 12, 21 or 22, and the angle between two sides of the nearest hexagonal object 4 is between 3 and 8% .
• the basal push zone has a distance of 5.5% while the apical push zone has a distance of 5%.
• the fork 3 is present over substantially an angle y, represented in FIG. 2 which is 215 ° from the periphery of the hexagonal object 4.
• bosses 6, 7 and 8 are of slightly rounded external shape to facilitate the release of the flat key 1 and thus its return to allow the recovery of the nut 4.
• the recovery of the nut is carried out for a value less than 30 °, for example 20, 15 or 10 °. In this case, the number of thrust and support zones must be multiplied.
• the angle ⁇ between the straight lines, passing through the tangents or through the planes of two thrust zones of the same branch 10 or 20, is 30 °, in the case of an object hexagonal to screw or unscrew, this angle ⁇ will be different.
• the thrust zones 11 and 12, or 21 and 22, are flat.
• the two straight lines passing through the plane of the apical zone of one of the branches 10 or 20, 16 or 26, and through the plane of the basal zone of the other branch 20 or 10, 26 or 16, define an intersection corresponding to the axis of rotation 9 of said object 4, and an angle ⁇ between the two thrust zones il and 12, or 21 and 22, of the same branch 10 or 20, 16 or 26, which is included between 30 and 33 ° for a recovery of the object 4 to 30 °.
• the thrust zones can be curved. In this case, the straight lines pass through the tangent of the apical zone of one of the branches, and through the tangent of the basal zone of the other branch.
• these tangents define an intersection corresponding to the axis of rotation 9 of the object 4, and an angle ⁇ , similar to the previous, between the two zones of thrust of the same e branch which is between 30 and 33 ° for a recovery of the object at 30 °.
• the fork 3 is not in one piece as is the case in FIGS. 1 to 8, but consists of two parts.
• a first part consists of a branch 1 6 of the fork which is mounted movable relative to a second part, and this second part consists of one of the branches 26 and the groove 5, the branch 26 and the groove 5 being integral with the handle 2.
• the first part 16 is mounted mobile in rotation according to FI. This rotation is effected by means of a pivot ball joint 17 secured to the second part 26, the pivot ball joint 17 cooperating with a complementary shape carried by the first movable branch 16. This small rotation, according to FI in the figure 10, facilitates the return of the open-ended spanner with manual and alternative rotation control 1.
• the fourth embodiment of the entire request is in fact the second embodiment comprising two parts 16 and 26.
• the only difference with embodiment 9 and 10 lies in the fact that the first movable branch 16 is transversely movable along F2.
• the second fixed branch 26 comprises a guide means 27 of the first branch 16, in its movement along F2, as well as a translation means 30, shown in dotted lines, because located inside the fork 3 It can for example be a small axis provided with a spring.
• the longitudinal axis of this means of translation 30 forms an angle ⁇ with the longitudinal axis of the flat key 1.
• FIGS. 12 to 14 propose another embodiment which includes only three thrust zones 31, 32 and 33.
• one of the branches 18 or 19 has a single thrust zone 31 while the other branch 28 or 29 has two 32 and 33.
• the characteristics of the branch 28 or 29 with two thrust zones 32 and 33 are identical and as numerous as those of the keys of FIGS. 1 to 11.
• FIGS. 12 and 13 the position of a nut 4 can be seen according to the two different operating positions, that is to say with an angular deviation of 30 ° in the positions of the nut 4 relative to the key 1.
• the embodiment is a combination of the embodiments of FIGS. 12 and 13, on the one hand as regards the three thrust zones, and of FIG. 11, on the other hand for with regard to the mobile branch.
• Bosses each comprising two support zones 9. Axis of rotation of the object 4 10. First branch 11. Apical thrust area of the first branch 10 12. Basal thrust area of the first branch 10 13 to 15. First branch clearance areas 10
• Basal thrust zone of the second branch 20 23 to 25. Clearance zones of the second branch 20
• Basal thrust zone of the second branch 28 or 29 is Basal thrust zone of the second branch 28 or 29

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• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
• Transmission Devices (AREA)
• Bolts, Nuts, And Washers (AREA)

Priority Applications (5)

Applications Claiming Priority (2)

Publications (1)

Family

ID=9495049

Family Applications (1)

Country Status (11)

Families Citing this family (5)

Citations (9)

Family Cites Families (3)

• 1996
  • 1996-08-12 FR FR9610193A patent/FR2752183B1/fr not_active Expired - Fee Related
• 1997
  • 1997-05-15 WO PCT/FR1997/000868 patent/WO1998006543A1/fr not_active Application Discontinuation
  • 1997-05-15 EP EP97925093A patent/EP0921912A1/fr not_active Withdrawn
  • 1997-05-15 AU AU30355/97A patent/AU3035597A/en not_active Abandoned
  • 1997-05-15 CA CA002263369A patent/CA2263369A1/fr not_active Withdrawn
  • 1997-05-15 JP JP10509439A patent/JP2000516543A/ja active Pending
  • 1997-06-13 MA MA24661A patent/MA24210A1/fr unknown
  • 1997-06-17 TW TW086108469A patent/TW333491B/zh active
  • 1997-06-18 ZA ZA9705367A patent/ZA975367B/xx unknown
  • 1997-06-20 AR ARP970102705A patent/AR008610A1/es unknown
  • 1997-08-05 ID IDP972703A patent/ID19100A/id unknown

Patent Citations (10)

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