FR2846616A1 - Windscreen wiper blade mounting comprises transverse groove in which adaptor is mounted and rear, front and spherical cavity locking parts - Google Patents

Abstract

The wiper blade mounting (1) comprises several independent adaptors intended to be mounted in a transverse groove (3). The U-section mounting has a rear locking part (5), a front locking part (6) and a spherical cavity locking part (7). An Independent claim is included for adaptors.

Description

WINDSCREEN WIPER MOUNT HAVING A WATER ATTACHMENT ARRANGEMENT

LESS AN ARM

  The present invention relates to a wiper blade mounting comprising an arrangement for fixing at least one arm.

  There are two known types of such fastening arrangements.

  First, a first type which will be said below with a pivoting cross member and the end of the arm of which is shown in FIG. 1, seen in longitudinal section. The end of an arm 1A for such an arrangement is shown in FIG. 1. This arm of

  U-shaped section in stamped sheet metal supports a cross-member 2A of trapezoidal section pivoting on an axis 3A riveted to the wings of the U-shaped section. This cross-member 2A has on its upper face a groove 4A. Such an arm is mounted in a specific wiper mount with a transverse groove receiving the cross member 2A.

  Then, a second type which will be said below with lateral pivot and the end of the arm of which is shown in FIG. 2, seen in perspective. The end of an arm 1B for such an arrangement is shown in FIG. 2. This end is made of stamped sheet metal and crimped at the end of a rod 2B forming the arm. It has a riveted axis 3B lateral and a tab 4B folded in L near this axis. Such an arm is mounted on a specific wiper mount with lateral bore receiving the axis 3B, the tab 4B retaining the

broom on the arm.

  These two different types of arms are therefore currently each associated with a different type of specific broom mount and therefore requires a particular manufacture of broom as well as a particular supply of broom in the case of replacement of a worn broom in the context of after sales market. This is complex and expensive from the point of view of manufacturing and also of

  management of spare parts such as brushes.

  The invention solves this problem by proposing a frame

  standard brush, which, using two simple intermediate pieces 5 called adapters, can be mounted on at least the two types of arms previously described.

  To do this, the invention provides a wiper blade mount comprising an arrangement intended for fixing at least one arm, characterized in that it is associated with a 1o plurality of independent parts called adapters intended to be mounted in a mounting arrangement arranged on said mount, each of these adapters being able to be fixed to a type

different from arm.

  According to a preferred embodiment of the invention, said mounting arrangement comprises a transverse groove, a rear locking part, a front locking part and

  a blocking part in the open position.

  Preferably, the frame is produced in a U-shaped section profile, said transverse groove being of trapezoidal section and obtained by cutting the profile, said rear locking part being a T-shaped opening, said front locking part being a opening, open to the

  groove and said blocking portion being a spherical cavity.

  Advantageously, the frame comprises a complementary piece 25 of plastic material clipped onto the cross-member and

  forming a bearing covering said groove.

  The invention also relates to a first type adapter associated with a mount as specified above, characterized in that it consists of two front and rear bridges, both carrying an inverted tee rib on their internal face and forming between them a top section opening

  to that of said groove of the frame.

  Preferably, this adapter comprises at least one

  locking boss in open position.

  The invention also relates to a second type adapter associated with a mount as specified above, characterized in that it comprises a transverse cross section of section corresponding to that of the groove of the mount in which is arranged a transverse bore and a upper tongue 10 provided with a transverse groove on its upper face. According to a preferred embodiment, this adapter

  includes clips for fixing to the frame.

  Advantageously, it includes a lateral stop on the same side as a prominent bearing extending said bore.

  The invention is described below in more detail with the aid of figures showing only preferred embodiments of the invention. FIGS. 1 and 2 already mentioned are views in longitudinal section and in perspective of the end of the support arms of

  wiper blade according to two known types.

  Figure 3 is a partial perspective view of a

  windscreen wiper blade mount according to the invention.

  Figure 4 is an equivalent view of such a frame 25 according to another embodiment.

  FIG. 5 is a partial view in longitudinal section of the

  mount shown in Figure 4.

  Figure 6 is a front view of an adapter of a first

type according to the invention.

  Figures 7 to 9 are views in longitudinal section, of

  below and in cross section of this same adapter.

  Figures 10 to 12 show the implementation of the same adapter on a wiper blade mount according to the invention. Figure 13 is a perspective view of an adapter

  of a second type according to the invention.

  Figures 14 to 16 are views in longitudinal section, of

  below and in cross section of this same adapter.

  Figures 17 to 19 show this same adapter installed on a wiper blade mount according to the invention. a frame according to the invention is shown on the

Figures 3 to 5.

  This frame 1 is produced in a U-shaped section profile and has a transverse groove 3 of trapezoidal section and obtained by cutting the profile and stapling two cut and folded tabs to form a stiffened cross member 4 forming the bottom of this groove 3. On the core of the U-profile, an opening 5 of T-shape is also made, intended for

  form a rear locking part and on the other side of the groove 3, another opening 6, open on this groove, intended to form a front locking part. The frame also includes a spherical cavity 7 which is intended to form a blocking part in the "ON" open position.

  This frame 1 can receive an additional part

  as shown in Figures 4 and 5.

  This additional plastic part 8 comes to bear on the wing of the metal U-shaped profile forming the frame 1 30 and is clipped onto the cross-member 4 by clipping pins. It has a lateral opening extending the opening 6. The purpose of this complementary part 8 is to form a plastic bearing covering the groove 3 and to avoid metal-to-metal contact, in particular light alloy-sheet susceptible of wear. and therefore taking games. Such a mount 1 is associated with a plurality of parts

  independent said adapters intended to be mounted in the mounting arrangement already described and arranged on said mount, each of these adapters can be fixed to a different type of arm.

  In particular, two so-called first and second type adapters allow the attachment of first type arms called a pivoting cross member and a second type called lateral pivot arm, already described more

  top and shown in Figures 1 and 2.

  One embodiment of a first type adapter is

  shown in Figures 6 to 8.

  This adapter 10 is made of thermoplastic material and has two parts in the form of a bridge and a U-shaped section, known as front bridging 11 and rear bridging 12, connected by two longitudinal lateral branches 13, an opening thus being formed between the two bridges. This opening is intended for the passage of the pivoting cross member 2A (FIG. 1) of the arm of the first type. This opening is of larger cross section than that of the groove 3 of the frame. The internal faces of the wings of the two U-shaped bridges are intended to ensure the lateral retention of the adapter on the frame. The front bridging 11 has on its internal face an inverted T-shaped rib 9 and the rear bridging 12 has on its internal face an inverted T-shaped rib 14 These two ribs make it possible to ensure the vertical connection with the arrangement of

mounting the frame.

  The front bypass 11 has a tongue forward which has on its face turned towards the frame a spherical boss 15. This tongue is on its striated external face in order to allow the adapter to be gripped and pushed during its

mounting on the frame.

  The front bypass 11 may also include a second

  spherical boss 16 on its internal face near its 1o rear end.

  The mounting of such an adapter of the first type on the

  frame is shown in Figures 10 to 12.

  The front rib 9 and the rear rib 14 are introduced respectively into the groove 3 and into the opening 5 of the mounting arrangement. The boss 15 is then housed in the opening 6 of the frame. Once in this position shown in Figure 11, the adapter is pushed forward until the boss 15 clicks into the spherical cavity 7 of the frame. Thanks to the folded edge 8 of the opening 6, this boss 15 20 can thus be housed in the "ON" position by elastic deformation. The two inverted T-shaped ribs 9 and 14 lock the adapter on the core of the U-shaped profile forming the frame, by positioning the wings of each Tee under the core of the frame.

  on each side of openings 5 and 6.

  The frame as shown in FIG. 12 is ready to receive an arm of the first type with a pivoting crosspiece 2A (FIG. 1), this pivoting crosspiece being received in the groove 3 of the frame. Once this cross member is placed in the groove 3, the adapter is pushed back in the opposite direction, until contact 30 between the adapter 10 and the cross member 2A on the left side (seen according to FIG. 12) of the groove 3 (Figure 1), o the front bypass it partially closes the entrance to the groove 3 of the frame and o the possible spherical boss 16 snaps into the groove 4A of the cross member of the arm (Figure 1) ensuring the locking in "OFF" position, ie closed position and fixed arm. According to this arrangement, the frame 1 can be equipped with the complementary part 8 already described and intended to constitute a

  wear-resistant bearing between mount and pivoting arm cross member.

  An embodiment of a second type adapter is 1o shown in Figures 13 to 16.

  This adapter 20 is made of thermoplastic material and consists of an upper tongue 21 and two lateral flanges 22, 23 joined by a transverse crosspiece 24 of trapezoidal section corresponding to that of the groove 3 of the frame. 15 At the center of this crosspiece 24, is arranged a bore 25 provided with a cylindrical bearing 31 projecting at one of its ends and

blind at its other end.

  This adapter 20 is equipped with clips intended to be clipped into the frame, advantageously a front clip 26 intended to be clipped on the front end of the opening 6, a clip

  rear 27 intended to be clipped onto the rear end of the rear opening 5 and a bottom clip 28 disposed under the cross-member 24 and intended to be clipped under the stiffened cross-member 4 of the frame. The tongue 21 is provided with a transverse groove 29 on its upper face.

  The mounting of this adapter on the mount shown in Figure 2 is therefore done directly by vertical pressure and

  clip-on as shown in Figure 17.

  Advantageously, the adapter 20 can also comprise a lateral stop 30 shown in FIGS. 18 and 19. This stop 30 is on the same side of the adapter as the bearing

  31 and substantially the same thickness.

  The installation of a second type arm with lateral pivot is effected by fitting this pivot 3B (FIG. 2) into the bore 25 and locking the tab 4B (FIG. 2) in the groove 29 of the adapter. 20. The stop 30 ensures positioning by lateral support of the arm against it and against the bearing 31 and thus limits the clearance between the pivot and the bore 25 of the adapter 20, as particularly

visible in figure 19.

Claims (9)

  1. Frame (1) for a wiper blade comprising an arrangement intended for fixing at least one arm (1A, 1B), characterized in that it is associated with a plurality of independent parts known as adapters intended for be mounted in a mounting arrangement arranged on said mount (1), each of these adapters being able to be fixed to a type different from arm.   2. Frame according to claim 1, characterized in that said mounting arrangement comprises a transverse groove (3), a rear locking part (5), a front locking part (6) and a position locking part. opening (7).   3. Frame according to claim 2, characterized in that it is produced in a U-shaped section profile, said transverse groove (3) being of trapezoidal section and obtained by cutting the profile, said rear locking part (5) being a T-shaped opening, said front locking part being an opening (6), open on said groove (4), and said blocking part being a cavity spherical (7).   4. Frame according to claim 2 or 3, characterized in that   that it comprises a complementary piece (8) of plastic material clipped to the crosspiece (4) and forming a bearing 25 covering said groove (4) of the frame.   5. First type adapter associated with a mount according to one   claims 2 to 4, characterized in that it consists of two front (11) and rear (12) bridges, both carrying an inverted tee rib (9, 14) on their internal face and   forming between them an opening of cross section greater than that   of said groove (4) of the frame.   6. Adapter according to claim 5, characterized in that it comprises at least one boss (15) for locking in the open position. 7. Second type adapter associated with a mount according to one   of claims 2 to 4, characterized in that it comprises a transverse cross-member (24) of cross section corresponding to that of the groove (4) of the frame in which is arranged a transverse bore (25) and a tongue (21) higher   provided with a transverse groove 29 on its upper face.   8. Adapter according to claim 7, characterized in that it   comprises clips (26, 27, 28) for fixing to the frame.   9. Adapter according to claim 7 or 8 characterized in that it comprises a lateral stop (30) on the same side as a bearing   (31) protruding extending said bore (25).