Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60S—SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
  • B60S1/00—Cleaning of vehicles
  • B60S1/02—Cleaning windscreens, windows or optical devices
  • B60S1/04—Wipers or the like, e.g. scrapers
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60S—SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
  • B60S1/00—Cleaning of vehicles
  • B60S1/02—Cleaning windscreens, windows or optical devices
  • B60S1/04—Wipers or the like, e.g. scrapers
  • B60S1/32—Wipers or the like, e.g. scrapers characterised by constructional features of wiper blade arms or blades
  • B60S1/34—Wiper arms; Mountings therefor
  • B60S1/3488—Means for mounting wiper arms onto the vehicle
  • B60S1/3493—Means for mounting the wiper shaft in the wiper bearing
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60S—SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
  • B60S1/00—Cleaning of vehicles
  • B60S1/02—Cleaning windscreens, windows or optical devices
  • B60S1/04—Wipers or the like, e.g. scrapers
  • B60S1/0413—Modular wiper assembly
  • B60S1/0422—Modular wiper assembly having a separate transverse element
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60S—SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
  • B60S1/00—Cleaning of vehicles
  • B60S1/02—Cleaning windscreens, windows or optical devices
  • B60S1/04—Wipers or the like, e.g. scrapers
  • B60S1/32—Wipers or the like, e.g. scrapers characterised by constructional features of wiper blade arms or blades
  • B60S1/34—Wiper arms; Mountings therefor

Definitions

• the invention relates to a windshield wiper device, in particular for motor vehicles.
• the invention is therefore based on the object of providing a windshield wiper device which has a particularly long service life.
• the essence of the invention is to provide a wiper device to provide device with a bearing body and a wiper shaft, the bearing body and the wiper shaft spaced apart in the region of the bearing body end lying in the assembled state via a separating gap to prevent water from entering the bearing body are.
• the separation gap between the bearing body and the wiper shaft forms a barrier for splash water, which prevents splash water that has penetrated into the bearing body from below from creeping upwards into the bearing body due to capillary action and adhesive forces. There is little or no capillary action in the separating gap, since the capillary effect decreases with increasing gap width. Complex sealing measures for sealing the bearing body against the ingress of splash water from below can thus be dispensed with.
• the advantageous dimensions of the separating gap which vary depending on the bearing and shaft dimensions, prevent spray water from creeping upward in the bearing body, the bearing body taking up very little space and / or Wiper shaft has sufficient strength with a small shaft diameter.
• Fig. 1 is a partial view of a wiper device according to the invention with a plastic bearing body according to a first embodiment
• Fig. 2 is a partial view of an inventive wiper device with a metallic bearing body according to another embodiment.
• a windshield wiper device comprises a plastic bearing body 2 attached to a body part 1 of a motor vehicle, not shown, in which a driven wiper shaft 4, which is connected to a wiper arm 3 in a rotationally fixed manner, is rotatably mounted.
• the wiper arm 3 is only partially shown in Figure 1.
• the one-piece bearing body 2 is penetrated by a bearing opening 5 which is circular in cross section. This extends in the longitudinal direction of the bearing body 2, which has two opposite bearing body ends 6, 7.
• the first bearing body end 6 lies in the assembled state of the windshield wiper device and faces the wiper arm 3, while the second bearing body end 7 lies in the assembled state of the windshield wiper device.
• an externally encircling support projection 8 is formed on the bearing body 2, which has a support surface 9 facing the first bearing body end 6.
• a fastening section 10 of the bearing body 2 extends between the first bearing body end 6 and the support surface 9.
• the bearing body 2 passes through the body part 1, which on the support surface 9 of the support Approach 8 rests and surrounds the fastening section 10 of the bearing body 2.
• the bearing body 2 is rotatably mounted on the body part 1.
• an annular sealing recess 11 is provided on the first bearing body end 6, which is open at the top and communicates with the bearing opening 5.
• a sealing ring 12 which seals the bearing body 2 on the upper side.
• a rod projection 13 which is integrally connected to the bearing body 2 and which is connected to a rod 23.
• the bearing body 2 has a circumferential annular recess 14 which is open at the bottom and forms a separating gap.
• the ring recess 14 extends from the second bearing body end 7 in the direction of the first bearing body end 6 and is connected to the bearing opening 5.
• the ring recess 14 has an additional gap width W, for which the following applies: lmm ⁇ W ⁇ 3mm.
• the bearing opening 5 thus widens in steps to the circumferential ring recess 14.
• the depth T of the ring recess 14 in the longitudinal direction of the bearing body 2 is between 2 mm and 5 mm.
• the bearing body 2 is extremely compact despite the ring recess 14 and has sufficient strength.
• the bearing body 2 is extended downwards by the depth T of the ring recess 14 compared to conventional bearing bodies.
• the wiper shaft 4 which is circular in cross section, is rotatably supported, the wiper shaft 4 emerging from the bearing body 2 on both sides.
• the upper end section 15 of the wiper shaft 4, which protrudes with respect to the first bearing body end 6, is also attached via a wiper arm attachment 16 the wiper arm 3 rotatably connected.
• a securing ring 17 covering the sealing ring 12, which rests on the bearing body 2 at the top and surrounds the wiper element 4.
• a further sealing ring 18 is provided over the securing ring 17.
• the wiper shaft 4 has a second, lower end section which protrudes relative to the second bearing body end 7.
• a crank plate 19 is connected in a rotationally fixed manner to the second end section, which in turn is connected to an actuating lever 21 via a rotary joint 20.
• a resilient corrugated washer arranged adjacent to the crank plate 19 and a flat thrust washer arranged adjacent to the second end section, both of which surround the wiper shaft 4.
• the corrugated washer is used to compensate for a set longitudinal play of the bearing.
• the flat thrust washer which is between 0.1 and 0.3 mm thick, lies against the bottom of the second end section, so that the friction at this end section is reduced and abrasion of the softer material of the bearing body 2 is avoided.
• the crank plate 19, the rotary joint 20 and the actuating lever 21 are components of a motor-gear unit for driving the wiper arm 3.
• the mode of operation of the windshield wiper device is briefly described below.
• the wiper shaft 4 is set into a pivoting movement via the actuating lever 21, the rotary joint 20 and the crank plate 19, which in turn causes the wiper arm 3 to pivot.
• An upward creep of spray water in the bearing body 2 is prevented by the downwardly open ring recess 14, since the separating gap formed by the ring recess 14 has a sufficient gap width W to prevent the capillary action and the adhesive forces in the Area to reduce the ring recess 14 significantly.
• the ring recess 14 is many times larger than the bearing gap that exists between the wiper shaft 4 and the bearing body 2.
• a wiper shaft is used instead of the ring recess provided in the bearing body according to the first exemplary embodiment, the wiper section of which adjoins the lower section of the wiper shaft opposite the main section of the wiper shaft Wiper shaft is tapered.
• This tapered shaft section extends in the region of the second end of the bearing body and runs partially inside the bearing body.
• the separation gap between the bearing body and the wiper shaft is thus formed by reducing the wiper shaft diameter in the region of the second end of the bearing body.
• the dimensions of the present separation gap correspond to the first embodiment.
• a further exemplary embodiment of the invention is described below with reference to FIG. 2. Identical parts are given the same reference numerals as in the first exemplary embodiment, to the description of which reference is hereby made. Structurally different, but functionally similar parts are given the same reference numbers with a prime.
• a driven wiper shaft 4 ' which is connected in a rotationally fixed manner to a wiper arm 3, is rotatably mounted in a metallic bearing body 2' which is attached to a body part 1 '.
• the bearing body 2 'consisting of an aluminum or zinc alloy has a bearing opening 5 which penetrates the bearing body 2'.
• the one-piece bearing body 2 ' has in its upper half in the assembled state a rod projection 13' and an opposite fastening arm 22.
• the rod projection 13 ' is connected to the rod 23.
• the fastening arm 22 is fixedly connected to the body part 1 'via a decoupling part 24.
• In the bearing body 2 'two bearing bushes 25, 26 are used, which serve to mount the wiper shaft 4'.
• the upper bearing bush 25 is provided in the region of the first bearing body end 6, while the lower bearing bush 26 is arranged in the region of the second bearing body end 7.
• the bearing bushes 25, 26 are pressed into the bearing body 2 'from their respective bearing body ends 6, 7.
• the upper bearing bush 25 is pressed so deep into the bearing body 2 'that there is still space for a sealing ring 12 above it.
• the sealing ring 12 runs on the wiper shaft 4 'in the bearing body 2' and seals the bearing body 2 'at the top.
• the lower bearing bush 26 is pressed so deeply into the bearing body 2 'that its underside 27 is at a distance of approximately 2 to 5 mm from the lower end of the bearing body 7.
• the separating gap between the bearing body 2 'and the wiper shaft 4' is formed by the ring recess 14 ' has a gap width W of 1 to 3 mm and a depth T in the longitudinal direction of the bearing body 2 'between 2 and 5 mm.
• annular space formed by pressing in the lower bearing bush in the bearing body has a sufficient width to form the separation gap, a separate ring recess already provided in the bearing body can be dispensed with. The ring space then forms the ring recess.
• the bearing body 2 ' is closed on the one hand by the end of the wiper shaft 4' protruding downwards and on the other hand by a closure disk 28. The latter is held by a locking ring on the wiper shaft 4 5 .
• crank plate 19 ' At the upper bearing body end 6 is a crank plate 19 '.
• a resilient corrugated washer and a thrust washer also lie between the crank plate 19 'and the upper bearing body end 6, as described in connection with FIG. 1.
• the crank plate 19 is connected to an actuating lever 21 via a rotary joint 20.
• the crank plate 19 ', the rotary joint 20 and the actuating lever 21 form parts of an engine-transmission unit.
• the wiper shaft 4 ' is also non-rotatably connected to the wiper arm 3 via a wiper arm attachment 16.
• a further exemplary embodiment of the invention, not shown, is described below.
• This exemplary embodiment differs from the previous exemplary embodiment in that instead of the ring recess formed in the bearing body, the wiper shaft has a tapered shaft section in the region of the lower end of the bearing body, so that between the tapered section the wiper Shaft and the bearing body there is a separation gap.
• the basic design of the wiper shaft and the bearing body thus corresponds to the second exemplary embodiment.
• both a ring recess in a bearing body and a tapered wiper shaft section are provided to form a separation gap.
• the separating gap between the wiper shaft and the bearing body is not filled with grease, for example.

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Pivots And Pivotal Connections (AREA)
• Rolling Contact Bearings (AREA)

Priority Applications (3)

Applications Claiming Priority (2)

Publications (1)

Family

ID=32864232

Family Applications (1)

Country Status (7)

Families Citing this family (3)

Citations (6)

• 2003
  • 2003-03-07 DE DE10309942.5A patent/DE10309942B4/de not_active Expired - Fee Related
  • 2003-11-28 BR BRPI0318154-5A patent/BR0318154A/pt not_active IP Right Cessation
  • 2003-11-28 WO PCT/DE2003/003940 patent/WO2004078539A1/de active Application Filing
  • 2003-11-28 KR KR1020057016576A patent/KR101043570B1/ko not_active Expired - Fee Related
  • 2003-11-28 EP EP03782118A patent/EP1603779A1/de not_active Withdrawn
  • 2003-11-28 CN CNB2003801101207A patent/CN100415579C/zh not_active Expired - Fee Related
  • 2003-11-28 JP JP2004568997A patent/JP4102804B2/ja not_active Expired - Fee Related

Patent Citations (6)

Non-Patent Citations (2)

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