JP2008162529A - Wiper device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a wiper device with a simple wiper arm driving or direction changing structure, which is capable of reducing the number of parts, lowering costs, and adequately coping even with a window surface, which is not plane, but slightly bent. <P>SOLUTION: When a rotary shaft 11 is rotated by a driving motor 14, a moving body 20 attached to the rotary shaft 11 is reciprocated in the axial direction of the rotary shaft by having an engagement section 21 guided by an endless helical groove 11a on the periphery of the rotary shaft 11. Along with the reciprocation of the moving body 20, a wiper arm 50 repeats parallel displacement in both forward and reverse directions so as to wipe out the window surface. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a wiper device for wiping raindrops and dirt adhering to a window surface such as a windshield in a vehicle and a window surface for lighting in a building in a parallel direction.

  Conventionally, a wiper arm is supported in a standing state so as to extend vertically with respect to the windshield of the vehicle, and this wiper arm is reciprocated in the left-right direction of the windshield to wipe out raindrops attached to the window surface. A so-called parallel wiper device is known.

  In such a parallel wiper device, a structure for reciprocating the wiper arm in the left-right direction is a mechanism for changing the direction of the wiper arm by changing the rotation direction of the drive motor into both forward and reverse directions (see, for example, Patent Document 1). .), And a mechanism (for example, changing the direction of the wiper arm by a carriage that selectively engages and disengages the entrance side and the exit side with respect to the belt transmitting the rotational force while rotating the drive motor in one direction (for example, , See Patent Document 2).

JP 2000-6767 A Japanese Patent Laid-Open No. 2002-240686

  However, in the prior arts described in Patent Documents 1 and 2 as described above, both the mechanism for driving and the mechanism for changing the direction of the wiper arm have a large number of parts and a complicated configuration, resulting in an increase in cost. There was a problem. In addition, the blades of the wiper arm are configured to come into contact with a flat glass surface, and are not suitable for wiping a windshield that is curved in a convex shape, for example. There was also a problem that the surface could not be wiped out sufficiently.

  The present invention has been made paying attention to the problems of the prior art as described above. The configuration for driving or changing the direction of the wiper arm is simple, the number of parts can be reduced, and the cost can be reduced. Another object of the present invention is to provide a wiper device that can sufficiently cope with a slightly curved window surface instead of a flat surface.

The gist of the present invention for achieving the object described above resides in the inventions of the following items.
[1] In the wiper device (10) for wiping the window surface in the parallel direction,
A rotating shaft (11) that is supported so as to be rotatable in a state extending in parallel along one side of the window frame and has an endless spiral groove (11a) formed on the outer periphery;
A movable body (21) mounted on the rotary shaft (11) and guided by the endless spiral groove (11a) and reciprocating in the axial direction as the rotary shaft (11) is driven to rotate. 20)
A guide shaft (30) supported in parallel with the rotation shaft (11) at a position closer to one side of the window frame than the rotation shaft (11) and extending in the longitudinal direction so as to follow the surface shape of the window surface;
A follower (40) mounted on the guide shaft (30) and guided so as to be movable in the axial direction, and movably connected to the movable body (20);
A wiper arm (50) that is supported by the follower (40) on the base end side and has a tip end side extending toward the inside of the window frame to wipe the window surface;
A wiper device (10) characterized by comprising.

[2] In the wiper device (10A) for wiping the window surface in the parallel direction,
A rotating shaft (11) that is supported so as to be rotatable in a state extending in parallel along one side of the window frame and has an endless spiral groove (11a) formed on the outer periphery;
A movable body (21) mounted on the rotary shaft (11) and guided by the endless spiral groove (11a) and reciprocating in the axial direction as the rotary shaft (11) is driven to rotate. 20A)
A wiper arm (50A) whose proximal end is supported by the movable body (20A) and whose distal end extends toward the inside of the window frame and wipes the window surface;
A guide shaft (30) supported in parallel with the rotation axis (11) along the other side opposite to one side of the window frame and extending in the longitudinal direction so as to follow the surface shape of the window surface;
A follower (40A) that is mounted on the guide shaft (30) and guided so as to be movable in the axial direction, and that displaceably connects the distal end side of the wiper arm (50A);
A wiper device (10A) characterized by comprising:

  [3] The wiper according to [1] or [2], further comprising a nozzle (64) for injecting a cleaning liquid onto the window surface at predetermined intervals along the moving direction of the moving body (20A). Device (10A).

Next, the operation based on the present invention will be described.
According to the wiper device (10, 10A) of the present invention, when the rotating shaft (11) is rotated by a power source such as a drive motor (14), the movable body (20, 20A) mounted on the rotating shaft (11). ) Reciprocates in the axial direction of the rotation shaft (11) by the engagement portion (21) being guided by the endless spiral groove (11a) on the outer periphery of the rotation shaft (11).

  As the moving body (20, 20A) reciprocates, the wiper arm (50, 50A) repeats the parallel movement in both forward and reverse directions so as to wipe the window surface. (11) and a movable body (20, 20A) provided with an engaging portion (21) guided by the endless spiral groove (11a) of the rotating shaft (11), and is simply configured with a small number of parts. Can do. Further, the entire apparatus does not need to be bulky and can be arranged compactly.

  According to the wiper device (10) described in [1], the guide extends in a position closer to one side of the window frame than the rotation shaft (11) so as to be parallel to the rotation shaft (11) and along the surface shape of the window surface. A movable body (20) is movably connected to a driven body (40) that supports the shaft (30) and is movably guided by the guide shaft (30). Further, the wiper arm (50) is connected to the driven body (40). Therefore, the wiper arm (50) can be arranged along the surface shape of the window surface in a state where the wiper arm (50) is connected to the movable body (20) via the driven body (40) so as to be pushed and pulled. In addition, it can sufficiently cope with a slightly curved window surface.

  According to the wiper device (10A) described in [2], the rotation shaft (11) is supported along one side of the window frame, and the guide shaft (30) is mounted along the other side facing the one side of the window frame. The wiper arm (50A) is supported on the follower (40A) that can move the guide shaft (30) while supporting the base end side of the wiper arm (50A) on the movable body (20A) that supports and reciprocates the rotating shaft (11). Since the tip end side of the door is displaceably connected, the wiper arm (50A) can be supported along the surface shape of the window surface from the base end side to the tip end side. Thus, the case where the entire length of the wiper arm (50A) becomes long can be dealt with sufficiently.

  Furthermore, according to the wiper device (10A) described in [3], the wiper device (10A) includes the nozzle (64) for injecting the cleaning liquid onto the window surface at predetermined intervals along the moving direction of the moving body (20A). Therefore, raindrops, dirt, etc. can be wiped off more effectively over the entire window surface.

  According to the wiper device of the present invention, the configuration for driving or changing the direction of the wiper arm is simple, the number of parts can be reduced, and the cost can be reduced. Further, the entire apparatus does not need to be bulky and can be arranged compactly. Furthermore, it is possible to sufficiently cope with a slightly curved window surface instead of a flat surface.

  In addition, when a nozzle that sprays the cleaning liquid onto the window surface at predetermined intervals along the moving direction of the moving body, raindrops, dirt, and the like are more effectively wiped over the entire window surface. be able to.

Hereinafter, various embodiments representing the present invention will be described with reference to the drawings.
1 to 3 show a first embodiment of the present invention.
FIG. 1 is a perspective view showing the wiper device 10, and FIG. 2 is a longitudinal sectional view showing the wiper device 10. FIG. 3 is an exploded perspective view showing a part of the wiper device 10 in an enlarged manner. Hereinafter, the example applied to the windshield 1 of a motor vehicle is demonstrated.

  A wiper device 10 according to the present embodiment is a device for wiping a windshield (window surface) 1 in a parallel direction, and as shown in FIG. 1, a rotating shaft 11, a moving body 20, and a guide shaft 30. And a follower 40 and a wiper arm 50.

  The rotating shaft 11 is pivotally supported at a position below the lower end edge (one side) 2a of the window frame 2 in the windshield 1 via bearings 12a and 12b on both left and right sides in a state extending in parallel with the lower end edge 2a. Has been. One end portion (right end side in FIG. 1) of the rotating shaft 11 extends outward from the bearing 12b, and the input gear 13 is integrally fixed to the end. An output gear 15 of a drive motor 14 that is rotationally driven in one direction is meshed with the input gear 13 in a rotatable manner.

  That is, when the drive motor 14 rotates in one direction, the rotational force is transmitted from the output gear 15 to the input gear 13 so that the rotary shaft 11 is rotationally driven in one direction. The drive motor 14, the output gear 15, and the input gear 13 are preferably housed in a housing (not shown) so as not to be exposed to the outside, and housed inside the bonnet 3 shown in FIG. Further, the mechanism for transmitting the rotation of the drive motor 14 to the rotary shaft 11 is not limited to the illustrated input gear 13 and output gear 15, and a reduction mechanism having another configuration may be provided.

  On the outer periphery of the rotating shaft 11, an endless spiral groove 11a for reciprocating the moving body 20 described below in both forward and reverse directions along the axial direction is formed. Here, the endless spiral groove 11a has a shape in which the spiral groove in the right-handed screw direction and the spiral groove in the left-handed screw direction intersect with each other and the ends of both spiral grooves are connected to each other. An endless spiral groove 11 a having a length corresponding to the lateral width of the lower end edge 2 a of the window frame 2 is formed on the rotating shaft 11.

  The moving body 20 is attached to the rotating shaft 11 so as to be relatively rotatable. The moving body 20 includes an engaging portion 21 guided in the endless spiral groove 11a. A cap portion 22 that is detachably mounted is provided on the outer wall of the moving body 20, and the engaging portion 21, which is a separate body, can be inserted into the moving body 20 by removing the engaging portion 21. It is configured as follows.

  Since the moving body 20 itself is supported so as to maintain a posture in a certain direction when the rotary shaft 11 is rotationally driven, the engaging portion 21 is connected to the endless spiral groove 11 a of the rotary shaft 11 with the rotational drive of the rotary shaft 11. The entire moving body 20 reciprocates in the axial direction of the rotating shaft 11 while moving along the axis. The moving body 20 is provided in a shape that extends upward with a portion that is rotatably attached to the rotating shaft 11 as a lower end portion, and an attachment portion 23 that supports a wiper arm 50 described later is provided at the upper end portion. Is provided.

  The guide shaft 30 extends in parallel with the rotation shaft 11 at a position near the lower end edge 2a of the window frame 2 from the rotation shaft 11 and extends in the longitudinal direction so as to follow the convex curved surface shape of the window surface. It is supported. The guide shaft 30 is specifically formed from a round bar member.

  The follower 40 is a member that is mounted on the guide shaft 30 and guided so as to be movable in the axial direction. A guide hole 42 that is movably inserted into the guide shaft 30 is provided at the upper end of the follower 40. Moreover, the lower end part (base end side) of the follower 40 is connected to the attachment part 23 of the said mobile body 20 so that a displacement is possible.

  Specifically, as shown in FIG. 3, the mounting portion 23 of the moving body 20 is processed into a substantially rectangular closed section by bending both side edges of the substantially U-shaped section member inward at right angles. A receiving plate 24 in which a guide groove 25 extending in the vertical direction is formed is disposed inside. On the other hand, the lower end portion of the follower 40 is inserted into the mounting portion 23 of the movable body 20, and the engagement pins 41, 41 protruding in a line up and down are movable to the guide groove 25 of the receiving plate 24. Is fitted. Thereby, the lower end part of the follower 40 is connected with the attachment part 23 of the said mobile body 20 so that a displacement in the up-down direction is possible.

  Further, the substantially B-shaped cross section of the movable body 20 is formed to be larger than the cross-sectional shape of the lower end portion of the driven body 40 so that each engagement pin 41 does not come out of the guide groove 25. Thereby, the lower end portion of the follower 40 is connected to the mounting portion 23 of the moving body 20 so as to be displaceable also in the front-rear direction. Even if it is slightly curved along the surface, it can be absorbed by the displacement of the moving body 20 and the driven body 40.

  The wiper arm 50 is supported so that its proximal end is fitted into the upper end of the follower 40, and its distal end extends toward the inside of the window frame 2 to wipe the window surface. The wiper arm 50 extends upward in a direction orthogonal to the rotating shaft 11 and the guide shaft 30. Specifically, as shown in FIG. 2, the wiper arm 50 has a lower end formed of a strong elastic rubber 51 and an elastic rubber 52 formed integrally with a blade from the upper side to the tip. Due to such a double structure of elastic rubber, the blade of the elastic rubber 52 is configured to elastically abut against the window surface, particularly by the strong elastic rubber 51.

Next, the operation of the wiper device 10 according to the first embodiment will be described.
In FIG. 1, when the drive motor 14 is driven, the rotational force is transmitted from the output gear 15 to the input gear 13, and the rotary shaft 11 is rotationally driven in one direction. When the rotating shaft 11 rotates, the engaging portion 21 inside the moving body 20 moves along the endless spiral groove 11 a of the rotating shaft 11, and the entire moving body 20 continuously reciprocates left and right in the axial direction of the rotating shaft 11. Move.

  As the moving body 20 reciprocates, the power of the reciprocating movement is also transmitted to the driven body 40, and the driven body 40 reciprocates along the guide shaft 30 while being displaced relative to the moving body 20. To do. In this way, the blade of the wiper arm 50 wipes the window surface of the windshield 1 following the follower 40 that moves along the guide shaft 30. Since the blade of the wiper arm 50 wipes the window surface in the parallel direction, it is possible to ensure a wide wiping range up to the immediate vicinity between both side edges of the windshield 1.

  As described above, the mechanism for repeatedly driving the wiper arm 50 in the parallel direction is basically the rotating shaft 11 that is rotationally driven and the engaging portion 21 that is guided by the endless spiral groove 11a of the rotating shaft 11. Therefore, the number of parts can be reduced and the configuration can be simplified. Further, the entire apparatus does not need to be bulky and can be arranged compactly.

  Further, the wiper arm 50 is connected to the moving body 20 via the driven body 40 that moves along the guide shaft 30 so as to be able to be pushed and pulled, so that the window surface of the windshield 1 is curved. The wiper arm 50 can be moved so as to follow the surface shape of the window surface, and can sufficiently cope with a window surface having a slightly curved surface shape.

  When the moving body 20 stops moving, the moving body 20, the follower 40, and the wiper arm 50 are positioned so as to overlap the left and right edges of the moving body 20, respectively, so that the wiper arm 50 and the like can be seen from the vehicle interior. Can be set to not.

FIG. 4 shows a second embodiment of the present invention.
Similar to the first embodiment, the wiper device 10A according to the present embodiment includes the rotary shaft 11, the moving body 20A, the guide shaft 30, the driven body 40A, and the wiper arm 50A. However, the arrangement of the guide shaft 30 and the follower 40A is different, and it has a cleaning machine groove 60 for injecting the cleaning liquid onto the window surface. Hereinafter, the example applied to the glass window in buildings, such as a building, is demonstrated.

  The rotating shaft 11 is pivotally supported at a position below the lower end edge (one side) of the window frame on a window glass (window surface) (not shown) so as to be rotatable in parallel with the lower end edge. A power transmission pulley 17 is integrally fixed to one end of the rotating shaft 11. A belt 18 extending over the pulley 17 is stretched over the pulley 17 so that the power can be transmitted to another wiper device 10A which is unitized and provided adjacent to the left and right or up and down. It is configured.

  The output gear 15 of the drive motor 14 is a bevel gear, and two input gears 16 that are also bevel gears are meshed with each other in a rotatable manner. When the pulley 17 to which the input gear 16 is integrally fixed rotates, the rotational force is transmitted to the pulley 17 integrated with the rotary shaft 11 through the belt 18.

  The moving body 20A is rotatably mounted on the rotating shaft 11, and the lower end (base end side) of the wiper arm 50A is integrally formed with the moving body 20A so as to extend at right angles to the rotating shaft 11. It is supported. Similar to the moving body 20 of the first embodiment, the moving body 20A includes an engaging portion 21 guided by the endless spiral groove 11a of the rotary shaft 11 and a cap portion 22 that can be attached to and detached from the outer wall of the moving body 20A. I have.

  The guide shaft 30 extends in parallel with the rotating shaft 11 along the upper edge (other side) opposite to the lower edge (one side) of the window frame, and is supported in the longitudinal direction along the surface shape of the window surface. Has been. A driven body 40A is attached to the guide shaft 30 so as to be movable in the axial direction, and the distal end side of the wiper arm 50 is connected to the guide shaft 30 so as to be displaceable. For the displacement of the wiper arm 50 on the distal side with respect to the follower 40A here, these materials may be formed of rubber, for example, and the elastic deformation of the materials themselves may be used.

  The cleaning machine groove 60 includes a cleaning liquid tank 61, a cleaning liquid pump 62 that is driven and controlled by a control means (not shown) to pump the cleaning liquid in the cleaning liquid tank 61, a hose 63 routed from the cleaning liquid pump 62, And a nozzle 64 connected to the end. The hose 63 is routed so as to extend to another wiper device 10A provided next to it.

  The nozzle 64 injects the cleaning liquid onto the window surface at predetermined intervals along the moving direction of the moving body 20A, and a plurality of injection holes are continuously provided over the entire length. Such a nozzle 64 is disposed in parallel with the wiper device 10A, immediately above the guide shaft 30 in parallel.

  According to the wiper device 10A as described above, the rotation shaft 11 is supported along the lower edge of the window frame, the guide shaft 30 is supported along the upper edge opposite to the lower edge of the window frame, and the rotation shaft 11 is The base end side of the wiper arm 50A is supported by the reciprocating movable body 20A, while the distal end side of the wiper arm 50A is movably connected to the follower body 40A capable of moving the guide shaft 30, so that the wiper arm 50A is connected to the base end side. Can be supported along the surface shape of the window surface from the front end side to the front end side. For example, the case where the entire length of the wiper arm 50A is long, such as a window glass of a building, can be sufficiently handled.

  Further, since the wiper apparatus 10A includes the cleaning machine groove 60, the cleaning liquid can be sprayed from the nozzle 64 to the window surface at predetermined intervals along the moving direction of the moving body 20A by driving control of the cleaning liquid pump 62. Raindrops, dirt, etc. can be wiped off more effectively over the entire area of the window surface. In addition, the same code | symbol is attached | subjected to the site | part of the same kind as 1st Embodiment, and the overlapping description is abbreviate | omitted.

  The embodiments of the present invention have been described above with reference to the drawings. However, the specific configuration is not limited to the above-described embodiments, and the present invention can be changed or added without departing from the scope of the present invention. Included in the invention. For example, the present invention is not limited to glass windows in automobile windshields and buildings, but can be applied to various window surfaces including glass walls of restaurants and coffee shops, show windows of clothes shops, and the like.

1 is a perspective view showing a wiper device according to a first embodiment of the present invention. It is a side view (partial sectional view) showing a wiper device concerning a 1st embodiment of the present invention. It is a perspective view which decomposes | disassembles and shows the principal part of the wiper apparatus which concerns on 1st Embodiment of this invention. It is a perspective view which shows the wiper apparatus which concerns on 2nd Embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Windshield 2 ... Window frame 2a ... Lower end edge 10 ... Wiper apparatus 10A ... Wiper apparatus 11 ... Rotating shaft 11a ... Endless spiral groove 12a ... Bearing 12b ... Bearing 13 ... Input gear 14 ... Drive motor 15 ... Output gear 16 ... Input Gear 17 ... Pulley 18 ... Belt 20 ... Moving body 20A ... Moving body 21 ... Engaging portion 22 ... Cap portion 23 ... Mounting portion 24 ... Receiving plate 25 ... Guide groove 30 ... Guide shaft 40 ... Follower 40A ... Follower 41 ... Engaging pin 42 ... Guide hole 50 ... Wiper arm 50A ... Wiper arm 51 ... Strong elastic rubber 52 ... Elastic rubber 60 ... Washing machine groove 61 ... Washing liquid tank 62 ... Washing liquid pump 63 ... Hose 64 ... Nozzle

Claims (3)

In the wiper device for wiping the window surface in the parallel direction,
A rotating shaft that is supported so as to be rotationally driven in a state extending in parallel along one side of the window frame, and has an endless spiral groove formed on the outer periphery,
A moving body mounted on the rotary shaft and guided by the endless spiral groove, and reciprocating in the axial direction along with the rotational drive of the rotary shaft;
A guide shaft that is supported in parallel to the rotation axis at a position closer to one side of the window frame than the rotation axis, and extends in the longitudinal direction so as to follow the surface shape of the window surface;
A follower mounted on the guide shaft and guided so as to be movable in the axial direction, and connected to the movable body in a displaceable manner;
A wiper arm whose proximal end is supported by the follower and whose distal end extends toward the inside of the window frame and wipes the window surface;
A wiper device comprising the wiper device. In the wiper device for wiping the window surface in the parallel direction,
A rotating shaft that is supported so as to be rotationally driven in a state extending in parallel along one side of the window frame, and has an endless spiral groove formed on the outer periphery,
A moving body mounted on the rotary shaft and guided by the endless spiral groove, and reciprocating in the axial direction along with the rotational drive of the rotary shaft;
A wiper arm whose proximal end is supported by the movable body and whose distal end extends toward the inside of the window frame and wipes the window surface;
A guide shaft that is supported in parallel with the rotation axis along the other side facing one side of the window frame and extends in the longitudinal direction so as to follow the surface shape of the window surface;
A follower mounted on the guide shaft and guided so as to be movable in the axial direction, and movably connecting the tip end side of the wiper arm;
A wiper device comprising the wiper device.   The wiper device according to claim 1, further comprising a nozzle that injects a cleaning liquid onto the window surface at predetermined intervals along the moving direction of the moving body.

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