FR2494162A1 - SOCKET DRIVE TYPE RATCHET TOOL WITH SOCKET EJECTOR - Google Patents

Abstract

THE RATCHET TOOL OF THE SOCKET DRIVE TYPE WITH SOCKET EJECTOR OF THE PRESENT INVENTION INCLUDES AN IMPROVED STRUCTURE AND AN ARRANGEMENT INCLUDING A RETURNING MEANS OF THE CONTROL BUTTON 37, SOCKET EJECTOR SHAFTS 31, 33 AND A SHAFT RATCHET RATCHET 24 PIVOTING. THE INVENTION ALSO CONCERNS A NEW METHOD FOR MOUNTING A KEY OF THIS TYPE.

Description

1. The present invention relates to ratchet keys, and, more

  particularly, advanced ratchet wrenches

  Socket drive type incorporating an ejector

socket torch.

  One of the most commonly used types of mechanical wrenches is the socket wrench with ratchet control. Ratchet drive fits a number of sockets

  of a certain range of sizes in order to constitute a set.

  A selected socket is received on a drive post

  and is held there by a stop device. Some com-

  Ratchet mandes of the prior art, for example the controls described in United States patents Nos. 3,393,587, Nos. 3,815,451 and Nos. 3,881. 376, have a socket ejector, so that all the sockets can be removed from the

  post by depression of a drive member for this ejector

  tor. Advanced ratchet controls of the built-in type

  for a socket ejector are described in the pending United States of America patent applications S.N. 06 / 141.165

  of April 17, 1980 in the name of John Penner, an addition to the

  patents 06 / 009,459 of February 5, 1979 and 06 / 009,462

  of February 5, 1979 in the name of James W. Konecny.

  The general object of the present invention is to

  2. operation with ratchet controls described in

  patent applications cited above.

  More specifically, an object of the present in-

  vention, is a means of spring-loaded solicitation

pel of a command button.

  Another object of the present invention is a per-

  the structure and layout of the axis of

the caster ejector.

  Another object of the present invention is a

  ratchet plug structure whose assembly is facilitated.

  The present invention will be well understood during

  the following description made in conjunction with the drawings

  attached in which: Figure 1 is a top plan view of a typical ratchet with a socket control

  and incorporating a socket ejector according to a reaction mode

  particular reading of the present invention; Figure 2 is a side elevational view of the ratchet wrench of Figure 1, the socket not being mounted and part of the handle being removed; Figure 3 is a side elevational view, partly in section and partly in a flat, of the interior of the ratchet control of Figure 2, the ejector

  sleeve being in the retracted position and a sleeve (re-

  shown in phantom) being in the working position on the drive post; Figure 4 is identical to Figure 3, but the

  section is taken in a plane perpendicular to the cutting plane

  pe of figure 3 and with the sleeve ejector in the po-

  extension position or ejection position (the socket has been ejected); and Figure 5 is an exploded perspective view of

the ratchet control.

  For convenience, we will first

  description of a ratchet wrench with socket control

  according to a first embodiment of the present invention

  tion, then to that of the improvements made to this 3. key. In connection with the figures, we see that the command

  ratchet consists of a handle Il and a ratchet

  assembled chet 13. The handle 11 has a lever portion 15 which is integral with a cylindrical head 17. The cylindrical head 17 comprises a central bore in which

  are formed teeth 19 resembling grooves.

  The assembled plug 13 (see Figures 3 and 4) includes

  a stopper 21, a ratchet ratchet 23, a pivot shaft

  ratchet 24, a control button 25, an input shaft

  ratchet version 27, a biasing spring 29 of the rear

  inversion bre, a first bushing ejector shaft 31,

  a second bushing ejector shaft 33, a return plate

  holding 35 of ejector shafts, a conical spring 37 of

  pel of the control button and a retaining ring 39 of the

ratchet chon assembled.

  The ratchet plug 21 includes a body part

  generally cylindrical 41 and a driving pin 43.

  the cylindrical part 41 comprises an outer part cy-

  lindrique 45, a groove 47 for retaining ring, a shoulder-

  support 49, a control periphery 51, a recess 53

  for control button, a bore 55 for control button

  of, a slot 57 for ratchet ratchet, bores 59, 61

  for the shafts of the first and second ejectors, and a surface

  this extreme 62 on the drive post side.

  The cylindrical outer part 45 has a small diameter.

  slightly less than the small diameter of the teeth 19 of the

  tie 17 of the handle and a length substantially equal to that of the teeth. The cylindrical outer part 45 blends at one of its ends with the groove 47 and at its other end with the shoulder 49 which in turn blends with the periphery 51. The slot 57 for ratchet pawl has faces

  parallel sides which are separated by a slight distance

  considerably greater than the width of the pawl 23, and of the surfaces

  these lower parts which are situated in a plane parallel to the axis of the plug 21 and passing near this axis. The slot 57 is contiguous with the groove 47, which in turn is contiguous

  at the extreme surface 62. The surface 62 is generally flat

4.

  ne and perpendicular to the axis of the plug.

  The control button comprises a head 63 and a pin 65. The head 63 has the shape of a disc, the upper surface of which merges into a generally rectangular integral boss 67. The pin 65 is cylindrical and coaxial

with the head 63.

  The recess 53 for the control button is cylindrical.

  that, coaxial with the plug 21, has a diameter slightly greater than that of the head 63, and has a lower surface "

  flat plane 69 which is perpendicular to the axis of the plug.

  The bore 55 for the control button is cylindrical,

  coaxial with the plug 21, has a slightly larger diameter

  laughing at that of the spindle 65, and melts at its open end in a circular cavity 68 located in the lower surface 69. The bores 59, 61 for shafts of the first and second ejectors are cylindrical, have the same diameter,

  which is slightly higher than that of the ejection trees

  tor 31, 33, are arranged on opposite sides of the bore

  ge 55, have their axes parallel to that of bore 55,

  open at one of their ends into the lower surface

  higher 69 and at their other end in the end surface 62 of the cylindrical body 41. The plane containing the axes of the bores 59, 61 is parallel to the plane containing the surfaces

slot 57.

  The driving pin 43 of the plug 21 is in one

  same part with the cylindrical body 41, extends outwards

  laughing from the extreme surface 62, is coaxial with the bou-

  chon 21, has a generally classic cross-sectional shape

  slightly square, is dimensioned so as to receive the dou-

  them of a game of corresponding size and includes a ball

  71 and a conventional stop spring (not shown).

  The pawl 23 has a generally arcuate outer surface and has at each of its end portions a set of teeth resembling grooves which extend

  axially 73, 74, an inner surface comprising an enco-

  central che 75 which extends axially with flat parts

  nes respective 77, 79 extending outward from

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5.

  on each of its sides; a tilting bore 81 extends

  dant along the axis of the pawl and opening into flat, parallel, respective lateral faces 83, 85, with the axis of the tilting bore parallel to the teeth 73, 74 and being in a plane cutting the pawl 23. The shafts 31, 33 of the first and second ejectors are identical and each have an outer surface

  cylindrical 87 and an annular groove 88 contiguous to a part

  head tie 89. The plate 35 for retaining the ejector shafts has a generally circular peripheral shape, with a pair of opposite lateral slots 91 and a central slot 93. To mount the plug 13, the pawl

  23 is placed in the slot 57 with its central notch

  75 directed inward, and the pawl pivot shaft 24 is inserted and positioned inside first

  and second aligned support bores 102, 104 which are formed

  placed in the plug 21, as well as inside the ratchet tilting bore 81. The pivot shaft 24 of the

  ratchet is fixed in place by crimping or braking. The dirty-

  wise men aligned 102,104 have their axis located in a first plane which is perpendicular to a second plane containing the axes

  bores 59, 61 of the ejector shafts.

  Then, the respective ejector shafts 31, 33

  are mounted in the side slots 91 of the return plate

  held which have the same outline as the annular grooves 88 and keep apart the trees at their head 89 for

  that they are in alignment with the bores 59, 61. The plate

  retainer 35 is then mounted on the control button

  25, with the lateral slit 93 received in the peri-groove

  spherical 97 located at the inner end of pin 65

  button. The plate 35 has a slight

  bure in directions perpendicular to the axis of the window

  central unit 93, so as to minimize the friction between the heads 89 of the ejector shafts and the internal face 99

  of the head 63 of the control button and to reduce the depth

  required date of recess 53 for control button 6.

(see figure 4).

  Next, the conical return spring 37 of the button

  is placed on pin 65 with its small end

  mite directed towards the inner face 99 of the head 63 of the control button. Then, the ratchet reversing shaft 27 and its biasing spring 29 are inserted in a transverse hole 101 made in the spindle 65. Then, the control button 25, with its auxiliary parts, is inserted in the recess 53 (see Figures 3 and 4), with the ejector shafts 31, 33 guided so as to initiate their entry into the bores 59, 61, with the conical return spring

  37 having its large end seated in the circulating cavity

  re 68, with spindle 65 guided so as to start its

  trée in the bore 55, with the ratchet reversing shaft 27 being in a plane substantially perpendicular to the plane containing the central axes of the ejector shafts 31,33 and with this shaft abutting against the lower surface of the

circular cavity 68.

  An opening 106 allowing access to an assembly communicates the interior of the recess 53 near its lower surface 69 and the exterior of the plug 21. The axis of this opening is perpendicular to the axis of the plug 21

  that it cuts and is perpendicular to the axis of the bores

  gnes 102, 104 which it cuts. Consequently, the opening 106 is also aligned with the axis of the reversing shaft 27 at this stage of assembly. Then the shaft 27 is pushed in by means

  an appropriate tool (not shown) and inserted in the opening

  ture 106 to allow its entry into the bore 55.

  A plane containing the lower surfaces of the window

  te 57 will cut the bore 55 (see FIG. 5) so as to form a rectangular opening which will be located opposite the notch 75. Thus, after displacement of the spindle 65 over a sufficient distance inside the bore 55, the shaft

  27 enters the rectangular opening cited above, mo-

  to which it will be pushed by the force of its ground spring-

  licitation 29 to come to lean against the lower part-

  re the ratchet ratchet or notch 75. When the pressure

2494 162

7.

  exerted on the control button 25 is released, the res-

  conical return spell 37 causes the button to move outward until the ratchet inversion axis abuts a lateral surface of the slot 57, when the outer surface of the head 63 of the control button is substantially flush with the outer end of the recess 53. To mount the assembled plug 13 on the handle 11, the cylindrical outer part 45 of the plug is inserted into the bore of the cylindrical head 17 until that the shoulder 49 abuts against a shoulder 105 of the cylindrical head part 17, moment

  o the groove 47 of the retaining ring will extend outwards

  laughing just beyond the side face 107 of the part, cy-

  lindrique 17. The retaining ring 39 of the assembled plug is then mounted in the groove 47. This ring can be of a

  type commonly encountered in trade, cons-

  made of a material for spring leaf and shaped in a way

  lesson in giving it the shape of a flat circular spiral,

  as shown. The ring 39 can be stretched out

  dialing so as to increase its internal diameter enough for it to pass over the periphery of the surface

  end 62 of the stopper, then released so that its diameter

  the interior is substantially in line with the dimension of the bottom of the groove 47. When the ring 39 is mounted, its surface

  inner side will be pressed against the side ad-

  adjacent 107 of the cylindrical head portion 17 of the handle, so as to substantially avoid any axial displacement of the assembled plug 13. When inserting the assembled plug

  13 in the bore of the cylindrical part 17, it is necessary

  to slightly tilt the pawl 23 in the direction of compression of the biasing spring 29, which then allows its teeth 73, 74 to pass into the bore of part 17. During assembly, the pressure applied to the

  ratchet 23 is released, the biasing spring 29 acts

  sant on the reversing shaft 27 of the pawl will tilt the pawl 23 so that its respective teeth 73 or 74 are 8.

  correctly aligned with the teeth 19 of part 17.

  In operation, a socket 109 (shown in line

  mixed in figure 3) is mounted on pin 43 and main-

  held in place in the conventional manner under the effect of the stop ball 71. The control button 25 is then in the retraction position of the ejector shafts and the ratchet pawl 23 (as shown in Figure 3) is in the drive position with the direction of

  clockwise and snap clockwise

  clockwise. To cause a

  counterclockwise and snap clockwise, the control knob 25 is simply turned clockwise to its extreme position, which causes a displacement of the ratchet inversion shaft 27 on the internal surface of the pawl 23 so as to rotate it on its shaft 24 in order to disengage the set of teeth 74 and to engage the other set of teeth 73. To eject the socket 109, the control button 25 is

  pressed until the ejection trees are extended

  tor (see Figure 4) and the socket 109 is pushed by the shafts 31, 33 so that there is a cessation of its contact with the stop ball 71, which allows it to come out of

  the end of the drive pin 43.

  As previously indicated, the drive device

  ratchet structure of the present invention includes improvements

  compared to the devices described in the

  patent mandates cited above. We will now proceed to

  the description of these improvements.

  In said patent applications, the return spring of the control button is of the cylindrical type and is placed between the bottom of the bore of the button and the end of the tenon of this button in which a cavity has been made.

  special spring positioning. According to the present in-

  In particular, the return spring of the control button is of the conical type and is placed between the lower surface of the circular cavity 68 and the retaining plate 35 of the shafts 9.

  ejector. Consequently, the bore 55 of the control button

  of only needs to have sufficient depth to

  take into account the stroke of pin 65 of the control button

  order. The reduction in this depth results in a significant increase in the mechanical strength or structural integrity of the drive spindle 43 of the plug.

ratchet.

  In the patent applications cited above, the

  axes of the holes in the bushing ejector shafts are

  wind in a plane which cuts the slot of the ratchet ratchet,

  and one of these shafts also serves as a pivot for the cli-

  quet. According to the present invention, the axes of the bores 59, 61 of the bushing ejector shafts are situated in a plane which is perpendicular to the plane intersecting the slot 57 of the

  ratchet ratchet and a pivot shaft separate from the ri-

  ratchet quet (24) is provided. Like none of the ejection trees

  tor 31, 33 only serves as a pivoting shaft for the pawl, the risk

  that a malfunction of the ejection mechanism at the

  following bending of an ejector shaft due to the forces

  which it is submitted through the locust is found

  you've eliminated it. In addition, the dimensions of the ejector shafts are no longer dictated by the importance of the forces transmitted by the ratchet pawl and therefore these shafts can be significantly smaller. In addition, the position of these

  shafts makes it possible to call upon a per- fect assembly technique

  prepared as will now be described.

  In pending patent applications, the ar-

  ejector bres each have a flanged head which rests against their retaining plate so that each shaft is moved in its direction of retraction. According to the present invention, this type of head is eliminated and the ejector shafts each have an adjacent annular groove 88

  at head 89. This configuration increases the qua-

  trees while reducing the cost thanks to a di-

  significant reduction in machining operations. The throat annu-

  the area also allows you to control the longitu-

  dinal of the respective axes of ejector in both directions.

  10. In pending patent applications, when

  mounting the assembled plug, there was a certain

  cultivated to drive in the ratchet inversion axis so as to dampen

  cer its entry with the pin of the control button in the bore of the button. According to the present invention, provision is made

  an opening 106 for access to the assembly, which is sensitive-

  ment axially aligned with the axis of the inversion shaft 27 of the ratchet when the latter is in contact with the lower surface of the circular cavity 68 just before it enters the bore 55 of the control button. As the ejector shafts have been repositioned so as to be outside the path, it is possible to insert a tool in the opening 106 and to conveniently drive the shaft 27 over a sufficient length to allow its entry into

bore 55.

  The present invention is not limited to the examples

  ples of realization which have just been described, it is on the contrary susceptible of modifications and variants

  which will appear to those skilled in the art.

11.

Claims (4)

  1 - Ratchet tool of the bush drive type   the with nozzle ejector, characterized in that it comprises   takes: A. a handle having a lever portion and a head portion, the head portion having a central bore in which teeth resembling grooves are formed internally and side faces disposed in opposite directions;   B. an assembled ratchet plug mounted in the   tie forming head of the handle and comprising:   at. a ratchet stopper with a body having a te-   non-drive bushing in one piece, in sail-   binds axially outward beyond one of the side faces of the head portion a   axial cylindrical recess having a lower surface   superior and opening into the end of the op-   placed on the socket drive post, and a pair of bores for parallel ejector shafts, spaced from each other, extending in the body and contiguous to respective lateral parts of the post and opening into the 'axial cylindrical recess;   b. a ratchet ratchet means for driving   or the click-in of teeth resembling   splines and a means of reversing the direction of rotation tion of it;   vs. a control button located in the recess   axial cylindrical to be animated by a movement   ment back and forth, this button having a head which has an inner face and a pin extending axially inward from this inner face;   d. an ejector shaft retainer plate   placed on the spindle near the inner face and having opposite side slits;   e. a pair of ejector trees placed at the inside   12. laughing at the lateral slots of the retaining plate and inserted into the bores for ejector shafts; and F. a return spring of the conical type control button placed between the lower surface of the cylindrical recess and the retaining plate of the ejector shafts.   2 - Ratchet tool of the socket drive type with socket ejector, characterized in that it comprises: A. a handle comprising a part forming a lever and   a head portion, the head portion having a bore   central sage in which teeth resembling grooves and opposite side faces are formed internally;   B. an assembled ratchet plug mounted in the   tie forming head of the handle and comprising   at. a ratchet stopper with a body having a te-   no one-piece bush drive   binds axially outward beyond one of the side faces of the head portion, a   axial cylindrical recess opening into the former   body end opposite the drive post   socket, and a pair of bores for ejector shafts   parallel tor, distant from each other, extending in the body and contiguous to respective lateral parts of the post and opening into the axial cylindrical recess;   b. a ratchet ratchet means for driving   or the click-in of teeth resembling   grooves and a means of reversing the direction of rotation   tion of it; vs. a control button arranged in the axial cylindrical recess for movement therein   back and forth, this button having a head which comprises   te an inner face and a spindle extending axially   inward from this inner side superior;   d. an ejector shaft retainer plate   13. placed on the spindle near the inside and having opposite lateral slots; and   e) a pair of ejector shafts comprising each   cun an annular groove near one of its ends, the respective annular grooves being arranged inside respective lateral slots of the retaining plate and the ejector shafts inserted   in bores for ejector shafts.   3 - Ratchet tool of the bush drive type   the with nozzle ejector, characterized in that it comprises   takes: A. a handle having a lever portion and a head portion, the head portion having a central bore in which teeth resembling grooves are formed and opposite side faces; B. a ratchet assembled plug mounted in the head portion of the handle and comprising:   a, a ratchet stopper with a body having a te-   non-drive bushing in one piece, in sail-   links axially outwards beyond one of   side faces of the head portion, a recess   cylindrical axial with a lower surface and opening into the end of the body opposite to   tenon, a ratchet slot, and a pair   re of bores for ejector shafts, parallel, spaced from each other, extending in the body and contiguous to respective lateral parts of the post and opening into the axial cylindrical recess, the axes of the bores for ejector shafts lie in a plane which is perpendicular to a plane intersecting the ratchet pawl slot, b. ratchet pawl means mounted to pivot within the pawl slot   ratchet so as to cause entrainment or   rattling of teeth resembling grooves,   and a means for reversing the direction of rotation thereof this; 14.   vs. a control button located in the recess   axial cylindrical to be animated by a movement   back and forth, this button having a head which   has an inner face and a spindle extending   axially inward from this inner face; d. an ejector shaft retaining plate disposed on the spindle near the interior face and having opposite side slots; and   e. a pair of ejector shafts placed inside   the side slots of the return plate   held and arranged in the bores for ejector shafts. 4 - Tool according to claim 3, characterized in that the ratchet plug has an access opening which allows communication with the interior of the axial cylindrical recess near its lower surface, with the axis   of this opening being located in a plane which is perpen-   perpendicular to the plane containing the axes of the bores for shafts ejector.